CN108565196B

CN108565196B - Automatic black sintering equipment that scribbles of lamp holder

Info

Publication number: CN108565196B
Application number: CN201810472929.2A
Authority: CN
Inventors: 陈锦茂; 陈家欣; 郭松水; 郭展春
Original assignee: Shantou Jinmao Electric Light Source Industrial Co ltd
Current assignee: Shantou Jinmao Electric Light Source Industrial Co ltd
Priority date: 2018-05-17
Filing date: 2018-05-17
Publication date: 2023-11-14
Anticipated expiration: 2038-05-17
Also published as: CN108565196A

Abstract

The invention relates to automatic lamp cap blackening and sintering equipment which comprises a frame, a lamp bulb input device, a blackening device, a preheating and sintering device, a lamp bulb output device, a first lamp bulb clamping and conveying mechanism and a second lamp bulb clamping and conveying mechanism, wherein the lamp bulb input device is connected with the frame; the preheating sintering device comprises a turntable, a turntable rotating mechanism, a preheating oven, a lighting driving device, a plurality of first lighting devices, a plurality of second lighting devices and a plurality of sintering units. Firstly, dipping the paint on the lamp cap part of each bulb by using a blackening device to blacken, so that a coating is generated on the surface of the bulb; then adopting a preheating oven to bake and heat the bulb shell externally; then, wen Dianliang is gradually added into the bulb by utilizing each first lighting device and each second lighting device, and the filaments emit light in multiple stages to preheat the filaments; and then, each sintering unit is used for carrying out high-temperature burning on the coating for multiple times, so that the coating on the surface of the bulb is tightly combined with glass on the surface of the bulb, the bulb is prevented from being damaged, and the yield of the bulb is greatly improved.

Description

Automatic black sintering equipment that scribbles of lamp holder

Technical Field

The invention relates to the field of bulb production equipment, in particular to automatic lamp cap blackening and sintering equipment.

Background

In the process of producing the bulbs of the instruments such as motorcycles, automobiles and the like, the end part of the lamp cap of the bulb needs to be blackened, and the effect of the bulb is to avoid the reflection of light of the bulb. The blackening operation of the bulb is basically carried out by picking up the bulb by hands of workers, dipping the lamp cap part of the bulb one by one to blacken the coating, so that a coating is generated on the surface of the bulb, the coating on the surface of the bulb is difficult to adhere to the surface of the bulb after being generally dried, and the coating is easy to fall off from the surface of the bulb in the packaging and transportation process because the surface of the bulb is made of smooth glass, so that the coating on the surface of the bulb is required to be sintered after the bulb is blacked. However, at present, the coating on the surface of the bulb is sintered, and only high temperature is often adopted to directly heat the surface of the bulb, so that the high temperature surface is directly heated, and the bulb is easy to damage or filament damage.

Disclosure of Invention

The invention aims to solve the problem of providing the automatic lamp cap blackening and sintering equipment, which can automatically preheat a plurality of bulbs at multiple stages, sinter the coating on the surface of the bulbs at high temperature, enable the coating on the surface of the bulbs to be tightly combined with glass on the surface of the bulbs, avoid the damage of the bulbs and greatly improve the yield of the bulbs.

In order to solve the technical problems, the invention adopts the following technical scheme:

an automatic black sintering device of lamp holder, characterized by: the device comprises a frame, a bulb input device, a blackening device, a preheating sintering device, a bulb output device, a first bulb clamping and conveying mechanism and a second bulb clamping and conveying mechanism, wherein the bulb input device, the blackening device, the preheating sintering device and the bulb output device are sequentially arranged on the frame; the preheating sintering device comprises a turntable, a turntable rotating mechanism, a preheating oven, a lighting driving device, a plurality of first lighting devices, a plurality of second lighting devices and a plurality of sintering units, wherein the turntable rotating mechanism, the preheating oven, the lighting driving device and the sintering units are all arranged on a frame, and the turntable is arranged on a power output end of the turntable rotating mechanism; the turntable is provided with a plurality of bulb positioning holes, and the bulb positioning holes are uniformly distributed along the circumferential direction of the turntable; the preheating oven and each sintering unit are sequentially arranged along the circumferential direction of the turntable and are positioned below each bulb positioning hole, and a filament heating area is arranged between the tail end of the preheating oven and the first sintering unit; the power output end of the lighting driving device is downwards arranged, each first lighting device and each second lighting device are arranged on the power output end of the lighting driving device, each first lighting device is arranged at the rear section of the preheating oven and above each bulb positioning hole, and each second lighting device is arranged in the filament heating zone and above each bulb positioning hole; the heating temperature of the first lighting device is smaller than the heating temperature of the second lighting device.

The working process of the automatic lamp cap blackening and sintering device is as follows:

firstly, a bulb is manually placed on a bulb input device, the bulb input device conveys the bulbs to a blackening device, and the blackening device dips paint on a lamp cap part of each bulb to conduct blackening;

then, the first bulb clamping and conveying mechanism clamps and conveys the bulbs with the blackened lamp cap parts from the blacking device into corresponding bulb positioning holes, and the turntable rotating mechanism drives the turntable to rotate, so that each bulb is sequentially rotated above the preheating oven, and external baking and heating are carried out on each bulb shell;

then, the power output end of the lighting driving device drives each first lighting device and each second lighting device to be respectively contacted with the electrode at the upper end of the bulb below the first lighting device and the second lighting device, a circuit is connected to light the filament of each bulb, the brightness of each bulb gradually increases along with the rotation of the turntable, the temperature inside the bulb also gradually increases, and the lighting heating of gradually heating the inside of each bulb is carried out on the premise that the preheating oven externally heats each bulb;

then, the turntable rotating mechanism drives the turntable to rotate, the bulb which is preheated inside is rotated to the next station, each sintering unit is respectively positioned below each bulb shell, each sintering unit burns each bulb shell in sequence, and each bulb shell is heated again at an external high temperature;

Finally, the turntable rotating mechanism drives the turntable to rotate, and the second bulb clamping and conveying mechanism clamps the sintered bulbs onto the bulb output device to naturally cool the bulbs.

The automatic lamp cap blackening and sintering equipment firstly utilizes a blackening device to dip the lamp cap part of each bulb in paint for blackening, so that a coating is generated on the surface of the bulb; then adopting a preheating oven to bake and heat the bulb shell externally; then, wen Dianliang is gradually added into the bulb by utilizing each first lighting device and each second lighting device, and the filaments emit light in multiple stages to preheat the filaments; and then, the coating on the surface of the bulb is burnt at high temperature for a plurality of times by utilizing each sintering unit, and the glass material on the surface of the bulb is changed into a molten state, so that the coating on the surface of the bulb and the glass in the molten state are mutually penetrated, the coating penetrates into the surface of the bulb, and the coating is solidified after cooling, so that the coating is stable in state and is not easy to fall off. The automatic black-coating sintering equipment for the lamp cap can automatically preheat a plurality of bulbs at multiple stages, the exterior and the interior of the bulbs are respectively preheated in a grading manner through the multiple stages, so that the problem that the bulbs are easy to damage is solved, a more uniform heating process is realized in the preheating process, the bulbs cannot be damaged due to suddenly receiving high-temperature heating before entering the next high-temperature heating process, the adaptability of the bulbs in the high-temperature heating process is greatly improved, the high-temperature sintering is carried out on the coating on the surfaces of the bulbs, the coating on the surfaces of the bulbs is tightly combined with the glass on the surfaces of the bulbs, the bulbs are prevented from being damaged, and the yield of the bulbs is greatly improved.

The turntable rotating mechanism is generally a driving motor, and a power output shaft of the driving motor is in transmission connection with a rotating shaft of the turntable.

The preheating oven is generally internally provided with a plurality of heating pipes, and the bulb shell above the preheating oven is externally baked and heated through the heating of the plurality of heating pipes.

The bulb input device and the bulb output device generally comprise matched structures such as a conveying belt, a motor, a gear set, a chain and the like, and bulb positioning seats are arranged on the conveying belt and used for placing bulbs and positioning, so that the first bulb clamping and conveying mechanism and the second bulb clamping and conveying mechanism can be used for orderly and orderly clamping and conveying the bulbs.

As a preferable scheme of the invention, the preheating oven further comprises a temperature control system, and the control signal output end of the preheating oven is electrically connected with the corresponding control signal input end of the temperature control system. The temperature control system generally comprises a singlechip and related circuits.

As a further preferable mode of the invention, the first lighting device and the second lighting device each comprise a lighting guide bracket, a lighting guide sleeve, a lighting guide rod, a positioning sleeve, a reset spring, a lighting electrode seat and three lighting electrode connecting ends, wherein the lighting guide brackets are fixedly arranged on the frame, the lighting guide sleeves are fixedly arranged on the lighting guide brackets, the lighting guide rods are positioned in the lighting guide sleeves, the positioning sleeve is fixedly arranged at the upper end of the lighting guide rod, and the reset spring is sleeved on the lighting guide rod and is positioned between the positioning sleeve and the lighting guide sleeve; the electrode holder is installed in the lower extreme of lighting the guide bar, and three are lighted the electrode link and are all installed on lighting the electrode holder, and three are lighted the electrode link and are connected with the control signal input that the temperature control system corresponds respectively electricity. The power output end of the lighting driving device drives the lighting guide rod to move downwards along the axial direction of the lighting guide rod, the lighting electrode seat and the three lighting electrode connecting ends move downwards along with the lighting guide rod, the three lighting electrode connecting ends are respectively contacted with electrodes at the upper ends of bulbs below the three lighting electrode connecting ends, and a circuit is connected to perform lighting preheating on each bulb.

As a further preferable scheme of the invention, a strip-shaped hole is formed in the side wall of the lighting guide sleeve, and a lighting convex column is arranged on the lighting guide rod and is positioned in the strip-shaped hole. By this arrangement, the lighting guide bar is limited, and the lighting guide bar is not raised too high when moving along the axial direction of the lighting guide sleeve.

As a still further preferable scheme of the invention, the lighting driving device comprises a lighting lifting driving device, a pressing-down guide sleeve, a pressing-down guide rod, a pressing-down plate and a plurality of pressing-down plates, wherein the lighting lifting driving device and the pressing-down guide sleeve are both arranged on the frame, the power output end of the lighting lifting driving device is upward, the pressing-down guide rod is arranged in the pressing-down guide sleeve, the lower end of the pressing-down guide rod is in transmission connection with the power output end of the lighting lifting driving device, the pressing-down plate is arranged at the upper end of the pressing-down guide rod, and each pressing-down plate is arranged on the pressing-down plate; the number of the lower pressing sheets is the same as that of the lighting guide rods and corresponds to the number of the lighting guide rods one by one, and each lower pressing sheet is respectively positioned above the upper end of each lighting guide rod. The power output end of the lighting lifting driving device moves downwards to drive the lower pressing plate and each lower pressing plate to move downwards, and each lower pressing plate contacts with the upper end of each lighting guide rod, so that each lighting guide rod moves downwards in the corresponding lighting guide sleeve. The lighting lifting driving device is generally an air cylinder, a piston rod of the air cylinder is arranged upwards, and a lower pressing plate is arranged at the tail end of the piston rod of the air cylinder; the lighting lifting driving device can also be a transmission connecting piece, and the transmission connecting piece is in transmission connection with an external (or whole machine) driving device.

As a preferable scheme of the invention, the sintering unit comprises a sintering rotating device, a gas dividing valve head, at least one gas jet pipe and at least one ignition nozzle, wherein the sintering rotating device is arranged on the frame, and the gas dividing valve head is arranged on a power output end of the sintering rotating device; an air inlet channel which is vertically communicated is arranged in the air dividing valve head, and the air dividing valve head is connected with an external air source through the air inlet channel; the lower end of the air jet pipe is arranged on the air dividing valve head and communicated with the air inlet channel, and the ignition nozzle is arranged at the upper end of the air jet pipe and below each bulb positioning hole. When the external air source is connected, the fuel gas is conveyed to the ignition nozzle through the air inlet channel and the air ejector, and after the ignition nozzle ignites, the gas distributing valve head rotates under the driving of the sintering rotating device, and the flame of the ignition nozzle rotates around the bulb shell to burn.

In a specific scheme, the sintering unit comprises a sintering rotating device, a gas dividing valve head, two gas spraying pipes and two ignition nozzles, wherein the sintering rotating device is arranged on the frame, and the gas dividing valve head is arranged on a power output end of the sintering rotating device; an air inlet channel which is vertically communicated is arranged in the air dividing valve head, and the air dividing valve head is connected with an external air source through the air inlet channel; the lower ends of the two air ejector pipes are arranged on the air dividing valve head and communicated with the air inlet channel, and the two ignition nozzles are respectively arranged at the upper ends of the two air ejector pipes and are oppositely arranged.

As a further preferable scheme of the invention, the sintering rotary device comprises a gear seat, a driving gear, a driven gear and a sintering rotary driving device, wherein the gear seat and the sintering rotary driving device are both arranged on the frame, the driving gear is in transmission connection with a power output end of the sintering rotary driving device, the driven gear is arranged on the gear seat, the gas distributing valve head is arranged on a gear shaft of the driven gear, and the driven gear is meshed with the driving gear. The driving gear is driven to rotate by the sintering rotary driving device, and the driven gear rotates along with the driving gear, so that the gas distributing valve head is rotated. The sintering rotary driving device is generally a driving motor, and the gas distributing valve head is in transmission connection with a power output shaft of the driving motor; the sintering rotary drive may also be a drive connection in drive connection with an external (or complete) drive.

As a preferable scheme of the invention, the black coating device comprises a third bulb clamping and conveying mechanism, a bulb positioning mechanism, a black coating turntable rotating mechanism, a black coating lifting driving device, a black coating bracket and a black coating trough, wherein the third bulb clamping and conveying mechanism, the bulb positioning mechanism, the black coating turntable rotating mechanism and the black coating lifting driving device are all arranged on a frame, the black coating turntable is arranged on a power output end of the black coating turntable rotating mechanism, and a bulb feeding station, a bulb positioning station and a bulb black coating station are arranged along the periphery of the black coating turntable; the third bulb clamping and conveying mechanism is arranged on the bulb feeding station; the bulb positioning mechanism is arranged on the bulb positioning station; the blackening lifting driving device is arranged on a bulb blackening station; the black coating turntable is provided with a plurality of clamping assemblies, and each clamping assembly is uniformly distributed along the circumferential direction of the turntable; the black coating bracket is arranged on the power output end of the black coating lifting driving device, the power output end of the black coating lifting driving device is upward, the black coating trough is arranged on the black coating bracket, and the black coating trough is positioned on the circumference of each clamping assembly and below each clamping assembly.

The automatic blackening and sintering device for the lamp cap has the following working process of blackening the lamp cap part of the bulb:

firstly, a bulb is manually placed on a bulb input device, a bulb is clamped on a clamping assembly corresponding to a black coating rotary table (namely a bulb feeding station) by a third bulb clamping and conveying mechanism, the black coating rotary table rotary mechanism drives the black coating rotary table to rotate, and the clamping assembly with the bulb is rotated to a bulb positioning station;

then, the bulb positioning mechanism lifts and positions the bulb on the clamping assembly upwards, and the black coating turntable rotating mechanism drives the black coating turntable to rotate, so that the lifted and positioned bulb is rotated to a bulb black coating station;

then, the black coating lifting driving device drives the black coating bracket to lift upwards, and the black coating trough lifts upwards along with the black coating bracket, and the lamp cap part of the bulb above the black coating trough just contacts with the coating in the black coating trough;

finally, the black coating lifting driving device drives the black coating bracket to descend downwards, the black coating trough descends downwards along with the black coating bracket, the lamp cap part of the lamp bulb above the black coating trough is separated from the paint in the black coating trough, the black coating rotary table rotating mechanism drives the black coating rotary table to rotate, the lamp cap part of the lamp bulb with black coating is rotated to the lower part of the first lamp bulb clamping and conveying mechanism, and the lamp cap part of the lamp bulb with black coating is clamped and conveyed into the corresponding lamp bulb positioning hole from the black coating rotary table by the first lamp bulb clamping and conveying mechanism.

The rotating mechanism of the black coating turntable is generally a driving motor, and a power output shaft of the driving motor is in transmission connection with a rotating shaft of the black coating turntable.

The black coating lifting driving device is generally an air cylinder, a piston rod of the air cylinder is upwards arranged, and a black coating bracket is arranged at the tail end of the piston rod of the air cylinder.

Above-mentioned bulb positioning mechanism makes progress the lifting location with the bulb on the tong subassembly for the lamp holder position of bulb just contacts with the liquid in the blacking silo of bulb blacking station, and the lamp holder position of bulb can not dip in too much liquid, so that the lamp holder position of bulb blackens unevenly. The lamp cap blackening device of the automatic lamp cap blackening and sintering equipment can well position the lamp cap part of the bulb, so that the lamp cap part of the bulb can be uniformly blacked.

In a specific scheme, the automatic black-coating sintering equipment for the lamp cap further comprises a total driving motor, and the total driving motor is respectively in transmission connection with the black-coating rotary table rotating mechanism, the rotary table rotating mechanism and the black-coating lifting driving device through a plurality of connecting pieces. Through this kind of setting for the structure of whole lamp holder automatic blacking sintering equipment is simplified, has reduced driving motor or cylinder's use quantity, and is energy-concerving and environment-protective, noise reduction.

As the preferable scheme of the invention, the clamp assembly comprises a first clamp, a second clamp and a compression spring, wherein the first clamp and the second clamp are symmetrically arranged, the end parts of the first clamp and the second clamp are mutually hinged and arranged on the black coating turntable, the inner side surfaces of the first clamp and the second clamp, which are opposite, are respectively provided with rotatable idler wheels, the upper end surfaces of the first clamp and the second clamp are respectively provided with a convex column, the two ends of the compression spring are respectively sleeved on the convex columns of the first clamp and the second clamp, and the compression spring tightens the first clamp and the second clamp. The compression spring tightens the first clamping hand and the second clamping hand to form the clamping area, so that the bulb can be effectively clamped and fixed, and the bulb clamping device is simple in structure and convenient to install.

As a further preferable scheme of the invention, the black coating device further comprises a clamping hand jacking mechanism, the clamping hand jacking mechanism comprises a jacking block and a jacking block driving device, the jacking block driving device is arranged on the frame, the jacking block is arranged on the power output end of the jacking block driving device, the jacking block is arranged below each clamping hand assembly, the top end of the jacking block is positioned between the first clamping hand and the second clamping hand, and the top end of the jacking block is in abutting arrangement with the idler wheels on the first clamping hand and the second clamping hand. When the power output end of the jacking block driving device drives the jacking block to jack up upwards, the top end of the jacking block jacks up the first clamping hand and the second clamping hand to enable the first clamping hand and the second clamping hand to be arranged in an opening mode, and the third bulb clamping and conveying mechanism clamps bulbs between the opened first clamping hand and the opening second clamping hand; the power output end of the top block driving device drives the top block to move downwards, and under the action of restoring force of the compression spring, the compression spring tightens the first clamping hand and the second clamping hand to form a clamping area, so that the bulb is clamped and fixed. The jacking block driving device is generally an air cylinder, a piston rod of the air cylinder is arranged upwards, and the jacking block is arranged at the tail end of the piston rod of the air cylinder; the top block driving device can also be a transmission connecting piece, and the transmission connecting piece is in transmission connection with an external (or complete machine) driving device.

As a further preferable mode of the invention, the third bulb clamping and conveying mechanism, the first bulb clamping and conveying mechanism and the second bulb clamping and conveying mechanism all comprise clamping guide sleeves, clamping guide rods, clamping seats, three clamping jaws, clamping jaw opening and closing mechanisms and clamping driving mechanisms capable of driving the clamping guide rods to do lifting and rotating actions; the clamping guide sleeve is arranged on the frame, the axis of the clamping guide sleeve is arranged in the vertical direction, and the clamping guide rod is positioned in the clamping guide sleeve; the clamping seat is arranged at the upper end of the clamping guide rod, and the middle parts of the three clamping jaws are hinged with the clamping seat; the clamping jaw opening and closing mechanism is arranged on the frame, and the power output end of the clamping jaw opening and closing mechanism is hinged with the upper ends of the three clamping jaws; the clamping driving mechanism is arranged on the frame, and the power output end of the clamping driving mechanism is connected with the lower end of the clamping guide rod. Firstly, a clamping driving mechanism drives a clamping guide rod to move downwards, three clamping jaws are arranged above a bulb input device with bulbs, and a clamping jaw opening and closing mechanism drives the three clamping jaws to open so as to clamp the bulbs on the bulb input device; then, the clamping driving mechanism drives the clamping guide rod to move upwards and perform rotary motion, and the three clamping jaws are rotated above the clamping hand assembly corresponding to the black coating turntable; then, the clamping driving mechanism drives the clamping guide rod to move downwards, the clamping jaw opening and closing mechanism drives the three clamping jaws to open, and the clamped bulb is loosened and placed into the clamping hand assembly corresponding to the black coating turntable; finally, the clamping driving mechanism drives the clamping guide rod to move upwards and perform rotary motion, and the three clamping jaws are rotated above the bulb input device with the bulb; the holding and conveying operation of the bulb is repeated in this way.

The clamping driving mechanism may include two independent driving devices, for example, the driving clamping driving mechanism includes a lifting cylinder, a lifting seat and a rotating cylinder, the lifting seat is mounted on a piston rod of the lifting cylinder, the rotating cylinder is mounted on the lifting seat, and the piston rod of the rotating cylinder is used as a power output end and connected with the clamping guide rod; in the preferred scheme, the clamping driving mechanism comprises two lifting clamping pieces, two rotating clamping pieces, a lifting deflector rod and a rotating deflector rod, wherein the two lifting clamping pieces are arranged on the clamping guide rod, the movable end of the lifting deflector rod is positioned between the two lifting clamping pieces, the connecting end of the lifting deflector rod is in transmission connection with an external (or complete machine) driving device, the lifting deflector rod moves up and down to push the two lifting clamping pieces to drive the clamping guide rod to move up and down, the rotating deflector rod is positioned between the two rotating clamping pieces, the rotating deflector rod is in transmission connection with the external (or complete machine) driving device, and the reciprocating motion of the rotating deflector rod pushes the two rotating clamping pieces to drive the clamping guide rod to axially rotate back and forth.

As a further preferable scheme of the invention, the clamping jaw opening and closing mechanism comprises a stay cord driving device, a stay cord, a return spring, a spring connecting rod and a pull rod; the clamping seat is provided with an inner cavity, and the pull rod is positioned in the inner cavity of the clamping seat; the stay cord drive arrangement installs in the frame, and the one end and the power take off end of stay cord drive arrangement are connected, and the other end of stay cord passes through reset spring and is connected with the one end of spring connecting rod, and the other end of spring connecting rod is connected with the one end of pull rod, the other end of pull rod with the upper end of three clamping jaws is articulated. In the state that no external force acts on the three clamping jaws, the three clamping jaws are in a normally open state through the tension of the return spring and the tension of the spring connecting rod because the return spring has a certain compression amount. When the bulb lamp is used, the pull rope driving device drives the pull rope to generate upward pulling force, the pull rod is driven to move upwards along the axial direction of the pull rod sequentially through the pull rope, the reset spring and the spring connecting rod, the three clamping jaws clamp inwards under the action of the pull rod, and when the bulb lamp is arranged below the three clamping jaws, the three clamping jaws clamp the bulb lamp; when the stay cord driving device stops driving the stay cord, the stay bar moves downwards along the axial direction of the stay bar under the action of the restoring force of the restoring spring, so that the three clamping jaws can be opened outwards, and the clamped bulb can be loosened; after the bulb is loosened, the pull rod is reset under the action of the restoring force of the restoring spring, and the three clamping jaws are reset to a normally open state. The stay cord drive device is generally an air cylinder, a piston rod of the air cylinder is arranged upwards, and one end of the stay cord is connected with the tail end of the piston rod of the air cylinder.

As a still further preferable scheme of the invention, the third bulb clamping and conveying mechanism, the first bulb clamping and conveying mechanism and the second bulb clamping and conveying mechanism all further comprise limiting mechanisms, each limiting mechanism comprises a limiting guide rod, a transverse limiting block and a longitudinal limiting rod, the lower ends of the limiting guide rods are connected with the upper ends of the clamping guide rods, the transverse limiting blocks are arranged at the upper ends of the limiting guide rods, and the longitudinal limiting rods are arranged on the transverse limiting blocks and correspondingly matched with the clamping seats.

As a preferred scheme of the invention, the bulb positioning mechanism comprises a positioning lifting driving device, a positioning guide sleeve, a positioning guide rod, a screw rod nut, a pressing rod, a pressing spring and a U-shaped fork, wherein the positioning lifting driving device is arranged on the frame, the power output end of the positioning lifting driving device is upwards arranged, the positioning guide rod is positioned in the positioning guide sleeve, the lower end of the positioning guide rod is fixedly connected with the power output end of the positioning lifting driving device, the screw rod nut is arranged on the positioning guide sleeve, the screw rod is arranged along the radial direction of the black coating turntable, one end of the pressing rod is connected with the end part of the screw rod, which is far away from the outer circumference of the black coating turntable, the other end of the pressing rod is connected with the upper end of the positioning guide rod, the U-shaped fork is arranged on the end part of the screw rod, which is close to the outer circumference of the black coating turntable, and the U-shaped fork is horizontally arranged; the positioning guide sleeve is provided with a first positioning column, the positioning guide rod is provided with a second positioning column, and two ends of the downward-pressing spring are respectively sleeved on the first positioning column and the second positioning column. When the black coating turntable rotating mechanism drives the black coating turntable to rotate, and the bulb holder assembly with bulbs is rotated to a station corresponding to the U-shaped fork, the positioning lifting driving device drives the positioning guide rod to ascend along the axial direction of the positioning guide sleeve, meanwhile, the screw rod and the U-shaped fork on the screw rod move inwards along the radial direction of the black coating turntable, the U-shaped fork is moved to the upper part of the bulb holder assembly, and the bulb fork in the bulb holder assembly is lifted upwards and positioned to a fixed height; then, the positioning lifting driving device drives the positioning guide rod to descend along the axial direction of the positioning guide sleeve, and simultaneously the screw rod and the U-shaped fork on the screw rod move outwards along the radial direction of the black coating turntable to withdraw the U-shaped fork from the bulb. The positioning lifting driving device is generally an air cylinder, a piston rod of the air cylinder is arranged upwards, and the lower end of the positioning guide rod is arranged at the tail end of the piston rod of the air cylinder.

As a further preferable scheme of the invention, the black coating device further comprises a liquid receiving device and a vacuum liquid absorbing device, wherein the liquid receiving device and the vacuum liquid absorbing device are both arranged on the black coating bracket, the liquid receiving device is positioned on the next station of the black coating station of the bulb, and the vacuum liquid absorbing device is positioned on the next station of the liquid receiving device.

As a further preferable scheme of the invention, the liquid receiving device comprises a liquid receiving upright post, a liquid receiving sheet and a liquid receiving bottle, wherein the liquid receiving upright post and the liquid receiving bottle are both arranged on the black coating support, the liquid receiving sheet is arranged on the liquid receiving upright post, the liquid receiving sheet is positioned on the circumference of each clamping hand assembly and below each clamping hand assembly, the liquid receiving sheet is obliquely downwards arranged, and the bottle mouth of the liquid receiving bottle is positioned right below the inclined direction of the liquid receiving sheet. As Xu Tuliao is remained at the lamp cap part of the black-coated bulb, when the black-coated lifting driving device drives the black-coated bracket to lift upwards, the liquid receiving sheet is lifted upwards along with the black-coated bracket, the lamp cap part of the black-coated bulb just contacts with the upper surface of the liquid receiving sheet, and a little residual paint at the lamp cap part is connected to the liquid receiving sheet.

As a further preferable scheme of the invention, the vacuum imbibition device comprises an imbibition bottle, a bottle stopper, an exhaust tube and an exhaust pump, wherein the exhaust pump is arranged on the frame, the imbibition bottle is arranged on the blackening support and is positioned below each clamping hand assembly, the bottle stopper is covered at the opening of the imbibition bottle, the bottle stopper is provided with a liquid inlet channel, the liquid inlet channel is communicated with the cavity of the imbibition bottle, and the cavity of the imbibition bottle is connected with the exhaust pump through the exhaust tube. As Xu Tuliao can be remained after the lamp holder part of the black-coated bulb passes through the liquid receiving device, when the black-coated lifting driving device drives the black-coated bracket to lift upwards, the liquid suction bottle is lifted upwards along with the black-coated bracket, the lamp holder part of the black-coated bulb just contacts with the liquid inlet channel port of the liquid suction bottle, the air suction pump is started, the air suction pump pumps air inside the liquid suction bottle through the air suction pipe, negative pressure is formed inside the liquid suction bottle, and a little residual paint at the lamp holder part can be sucked into the liquid suction bottle along with the liquid inlet channel to collect the residual paint again.

As a preferable scheme of the invention, a primary tube straightening mechanism, a secondary tube straightening mechanism and an air drying device are sequentially arranged between the blackening device and the preheating oven, the primary tube straightening mechanism and the secondary tube straightening mechanism are respectively positioned above the bulb positioning holes, and the air drying device is positioned below the bulb positioning holes.

As a further preferable scheme of the invention, the primary pipe positive mechanism comprises a primary pipe positive bracket, a primary movable clamping jaw, a primary fixed clamping jaw, a primary pull rope driving device, a primary pull rope and a primary return spring, wherein the primary pipe positive bracket and the primary pull rope driving device are both arranged on the frame, the ends of the primary movable clamping jaw and the primary fixed clamping jaw are mutually hinged and arranged on the primary pipe positive bracket, one end of the primary pull rope is connected with the power output end of the primary pull rope driving device, and the other end of the primary pull rope is connected with the primary movable clamping jaw; the primary movable clamping jaw and the primary fixed clamping jaw are respectively provided with a primary convex column, and two ends of a primary return spring are respectively sleeved on the primary convex columns of the primary movable clamping jaw and the primary fixed clamping jaw. When the primary pull rope driving device is used, the primary pull rope is driven by the primary pull rope driving device to generate upward pull force, and the primary movable clamping jaw is driven by the primary pull rope and the primary reset spring to move along the reverse direction of the primary fixed clamping jaw in sequence, so that the primary movable clamping jaw is in an opened state; when bulbs are arranged below the primary movable clamping jaw and the primary fixed clamping jaw, the primary pull rope driving device drives the primary pull rope to generate downward pull force, and the primary movable clamping jaw moves along the direction of the primary fixed clamping jaw under the action of the restoring force of the primary restoring spring, so that the bulbs below the primary movable clamping jaw are clamped to conduct tube straightening. The primary pull rope driving device is generally an air cylinder, a piston rod of the air cylinder is arranged upwards, and one end of the primary pull rope is connected with the tail end of the piston rod of the air cylinder.

As a further preferable scheme of the invention, the secondary pipe positive mechanism comprises a secondary pipe positive bracket, a secondary movable clamping jaw, a secondary fixed clamping jaw, a secondary stay cord driving device, a secondary stay cord and a secondary return spring, wherein the secondary pipe positive bracket and the secondary stay cord driving device are both arranged on the stand, the ends of the secondary movable clamping jaw and the secondary fixed clamping jaw are mutually hinged and arranged on the secondary pipe positive bracket, one end of the secondary stay cord is connected with a power output end of the secondary stay cord driving device, and the other end of the secondary stay cord is connected with the secondary movable clamping jaw; the secondary moving clamping jaw and the secondary fixed clamping jaw are respectively provided with a secondary convex column, and two ends of the secondary reset spring are respectively sleeved on the secondary convex columns of the secondary moving clamping jaw and the secondary fixed clamping jaw. When the device is used, the secondary pull rope driving device drives the secondary pull rope to generate upward pull force, and the secondary pull rope and the secondary reset spring drive the secondary movable clamping jaw to move along the reverse direction of the secondary fixed clamping jaw in sequence, so that the secondary movable clamping jaw is in an opened state; when the bulbs are arranged below the secondary movable clamping jaw and the secondary fixed clamping jaw, the secondary pull rope driving device drives the secondary pull rope to generate downward pulling force, and under the action of the restoring force of the secondary restoring spring, the secondary movable clamping jaw moves along the direction of the secondary fixed clamping jaw, so that the bulbs below the secondary movable clamping jaw are clamped and the secondary fixed clamping jaw is subjected to primary tube alignment. The secondary stay cord drive device is generally an air cylinder, a piston rod of the air cylinder is arranged upwards, and one end of the secondary stay cord is connected with the tail end of the piston rod of the air cylinder.

As a further preferable scheme of the invention, the air drying device comprises an air blower, two air collecting hoods and two air supply pipes, wherein the air blower and the two air collecting hoods are arranged on the frame, the two air collecting hoods are adjacently arranged, air outlets of the two air collecting hoods are positioned below the positioning holes of the bulbs, and air inlets of the two air collecting hoods are respectively communicated and connected with air outlets of the air blower through corresponding air supply pipes. The rotary table rotating mechanism drives the rotary table to rotate, the lamp with the blackened lamp cap part rotates to the air outlets of the two air collecting hoods, and the coating on the surface of the lamp is dried by blowing.

As a preferable scheme of the invention, a detection device is further arranged between the last sintering unit and the second bulb clamping and carrying mechanism, the detection device comprises a detection driving device, a detection guide sleeve, a detection guide rod, a detection support, a detection electrode seat and three detection electrode connecting ends, the detection driving device and the detection guide sleeve are both arranged on the frame, the detection guide rod is arranged in the detection guide sleeve, the lower end of the detection guide rod is in transmission connection with the power output end of the detection driving device, the detection support is arranged at the upper end of the detection guide rod, the detection electrode seat is arranged on the detection support, the three detection electrode connecting ends are all arranged on the detection electrode seat, and the three detection electrode connecting ends are respectively and electrically connected with the control signal input ends corresponding to the temperature control system. The power output end of the detection driving device drives the detection guide rod to move downwards along the axial direction of the detection guide rod, the detection electrode seat and the three detection electrode connecting ends move downwards along with the detection guide rod, the three detection electrode connecting ends are respectively contacted with electrodes at the upper ends of bulbs below the detection electrode seat and the three detection electrode connecting ends, a circuit is connected, each bulb is detected, and whether the bulbs are normally lighted after high-temperature sintering is detected. The detection driving device is generally an air cylinder, a piston rod of the air cylinder is upwards arranged, and the lower end of the detection guide rod is in transmission connection with the tail end of the piston rod of the air cylinder; the detection driving device can also be a transmission connecting piece, and the transmission connecting piece is in transmission connection with an external (or complete machine) driving device.

Compared with the prior art, the invention has the following advantages:

the automatic black-coating sintering equipment for the lamp cap can automatically preheat a plurality of bulbs at multiple stages, the exterior and the interior of the bulbs are respectively preheated in a grading manner through the multiple stages, so that the problem that the bulbs are easy to damage is solved, a more uniform heating process is realized in the preheating process, the bulbs cannot be damaged due to suddenly receiving high-temperature heating before entering the next high-temperature heating process, the adaptability of the bulbs in the high-temperature heating process is greatly improved, the high-temperature sintering is carried out on the coating on the surfaces of the bulbs, the coating on the surfaces of the bulbs is tightly combined with the glass on the surfaces of the bulbs, the bulbs are prevented from being damaged, and the yield of the bulbs is greatly improved.

Drawings

FIG. 1 is a schematic diagram of an embodiment of the present invention;

fig. 2 is a schematic structural view of the first lighting device and the second lighting device in fig. 1;

FIG. 3 is a schematic view of the structure of the sintering unit of FIG. 1;

FIG. 4 is a schematic view of the structure of the blackening apparatus of FIG. 1;

FIG. 5 is a schematic view of the structure of the hand grip assembly of FIG. 4;

FIG. 6 is a schematic view of a structure of a hand grip ejecting mechanism according to an embodiment of the present invention;

FIG. 7 is a schematic view of a third bulb holding and transporting mechanism according to an embodiment of the present invention;

Fig. 8 is a schematic structural view of a primary pipe straightening mechanism, a secondary pipe straightening mechanism and an air drying device in an embodiment of the invention.

Detailed Description

The invention is described in detail below with reference to the drawings and the specific embodiments.

As shown in fig. 1, the automatic lamp cap blackening and sintering device in the present embodiment includes a frame 1, a lamp bulb input device 2, a blackening device 3, a preheating and sintering device 4, a lamp bulb output device 5, a first lamp bulb clamping and conveying mechanism 6 and a second lamp bulb clamping and conveying mechanism 7, wherein the lamp bulb input device 2, the blackening device 3, the preheating and sintering device 4 and the lamp bulb output device 5 are sequentially arranged on the frame 1, the first lamp bulb clamping and conveying mechanism 6 is arranged on the frame 1 and is positioned between the blackening device 3 and the preheating and sintering device 4, and the second lamp bulb clamping and conveying mechanism 7 is arranged on the frame 1 and is positioned between the preheating and sintering device 4 and the lamp bulb output device 5; the preheating sintering device 4 comprises a turntable 42, a turntable rotating mechanism 43, a preheating oven 44, a lighting driving device 45, a plurality of first lighting devices 46, a plurality of second lighting devices 47 and a plurality of sintering units 48, wherein the turntable rotating mechanism 43, the preheating oven 44, the lighting driving device 45 and the plurality of sintering units 48 are all arranged on the frame 1, and the turntable 42 is arranged on a power output end of the turntable rotating mechanism 43; the turntable 42 is provided with a plurality of bulb positioning holes 421, and the bulb positioning holes 421 are uniformly distributed along the circumferential direction of the turntable 42; the preheating oven 44 and each sintering unit 48 are sequentially arranged along the circumferential direction of the turntable 42 and below each bulb positioning hole 421, and a filament heating zone 49 is arranged between the tail end of the preheating oven 44 and the first sintering unit 48; the power output end of the lighting driving device 45 is downward, each first lighting device 46 and each second lighting device 47 are installed on the power output end of the lighting driving device 45, each first lighting device 46 is arranged at the rear section of the preheating oven 44 and above each bulb positioning hole 421, and each second lighting device 47 is arranged in the filament heating zone 49 and above each bulb positioning hole 421; the heating temperature of the first lighting device 46 is smaller than the heating temperature of the second lighting device 47.

The turntable rotation mechanism 43 is typically a driving motor, and a power output shaft of the driving motor is in transmission connection with a rotating shaft of the turntable 42.

The preheating oven 44 is generally composed of a plurality of heat generating tubes, and the bulb envelope above the preheating oven 44 is externally baked and heated by the heat generated by the plurality of heat generating tubes.

The bulb input device 2 and the bulb output device 5 generally comprise a conveyer belt, a motor, a gear set, a chain and other matched structures, and bulb positioning seats are arranged on the conveyer belt and used for placing bulbs and positioning, so that the first bulb clamping and conveying mechanism 6 and the second bulb clamping and conveying mechanism 7 can be used for orderly and orderly clamping and conveying the bulbs.

The automatic lamp cap blackening and sintering equipment further comprises a temperature control system 10, and a control signal output end of the preheating oven 44 is electrically connected with a corresponding control signal input end of the temperature control system 10. The temperature control system 10 generally includes a single-chip microcomputer and associated circuitry.

As shown in fig. 2, each of the first lighting device 46 and the second lighting device 47 includes a lighting guide bracket 461, a lighting guide sleeve 462, a lighting guide rod 463, a positioning sleeve 464, a return spring 465, a lighting electrode mount 466, and three lighting electrode connecting ends 467, the lighting guide bracket 461 is fixedly mounted on the frame 1, the lighting guide sleeve 462 is fixedly mounted on the lighting guide bracket 461, the lighting guide rod 463 is in the lighting guide sleeve 462, the positioning sleeve 464 is fixedly mounted on the upper end of the lighting guide rod 463, and the return spring 465 is sleeved on the lighting guide rod 463 and is between the positioning sleeve 464 and the lighting guide sleeve 462; the lighting electrode holder 466 is mounted at the lower end of the lighting guide bar 463, the three lighting electrode connection ends 467 are all mounted on the lighting electrode holder 466, and the three lighting electrode connection ends 467 are electrically connected with the control signal input ends corresponding to the temperature control system 10, respectively. The power output end of the lighting driving device 5 drives the lighting guide bar 463 to move downwards along the axial direction of the lighting guide bar 463, the lighting electrode seat 466 and the three lighting electrode connecting ends 467 move downwards along the lighting guide bar 463, the three lighting electrode connecting ends 467 are respectively contacted with electrodes at the upper ends of bulbs below the lighting electrode seat, and a circuit is connected to perform lighting and preheating on each bulb.

The side wall of the lighting guide sleeve 462 is provided with a strip-shaped hole 4621, the lighting guide rod 463 is provided with a lighting convex column 4631, the lighting convex column 4631 is positioned in the strip-shaped hole 4621, the lighting guide rod 463 is limited, and the lighting guide rod 463 is limited from rising too high when moving along the axial direction of the lighting guide sleeve 462.

The lighting driving device 45 comprises a lighting lifting driving device 451, a pressing guide sleeve 452, a pressing guide rod 453, a pressing plate 454 and a plurality of pressing pieces 455, wherein the lighting lifting driving device 451 and the pressing guide sleeve 452 are both arranged on the frame 1, the power output end of the lighting lifting driving device 451 is upwards, the pressing guide rod 453 is arranged in the pressing guide sleeve 452, the lower end of the pressing guide rod 453 is in transmission connection with the power output end of the lighting lifting driving device 451, the pressing plate 454 is arranged at the upper end of the pressing guide rod 453, and each pressing piece 455 is arranged on the pressing plate 454; the number of the lower pressing pieces 455 is the same as that of the lighting guide bars 463 and corresponds one to one, and each lower pressing piece 455 is located above the upper end of each lighting guide bar 463. The power output end of the lighting lifting driving device 451 moves downward to drive the lower pressing plate 454 and each lower pressing plate 455 to move downward, and each lower pressing plate 455 contacts with the upper end of each lighting guide bar 463, so that each lighting guide bar 463 moves downward in the corresponding lighting guide sleeve 462. The lighting lifting driving device 451 is generally an air cylinder, a piston rod of the air cylinder is arranged upwards, and the lower pressing plate 454 is arranged at the tail end of the piston rod of the air cylinder; the lighting lifting driving device 451 may also be a transmission connection member, which is in transmission connection with an external (or complete) driving device.

As shown in fig. 3, the sintering unit 48 includes a sintering rotation device 481, a gas dividing valve head 482, a gas nozzle 483, and an ignition nozzle 484, the sintering rotation device 481 is mounted on the chassis 1, and the gas dividing valve head 482 is mounted on a power output end of the sintering rotation device 481; an air inlet channel (not labeled in the figure) which is vertically communicated is arranged in the air dividing valve head 482, and the air dividing valve head 482 is connected with an external air source through the air inlet channel; the lower end of the gas lance 483 is mounted on the gas dividing valve head 482 and communicates with the gas inlet passage, and an ignition nozzle 484 is mounted on the upper end of the gas lance 483 below each bulb positioning hole 421. When the external air source is connected, the gas is conveyed to the ignition nozzle 484 through the air inlet channel and the air jet 483, and after the ignition nozzle 484 ignites, the gas dividing valve head 482 rotates under the driving of the sintering rotating device 481, and the flame of the ignition nozzle 484 burns rotationally around the bulb shell.

In a specific scheme, the sintering unit comprises a sintering rotating device 481, a gas dividing valve head 482, two gas nozzles 483 and two ignition nozzles 484, wherein the sintering rotating device 481 is arranged on a frame, and the gas dividing valve head 482 is arranged on a power output end of the sintering rotating device 481; an air inlet channel which is vertically communicated is arranged in the air dividing valve head 482, and the air dividing valve head 482 is connected with an external air source through the air inlet channel; the lower ends of the two air nozzles 483 are both arranged on the gas dividing valve head 482 and communicated with the gas inlet channel, and two ignition nozzles 484 are respectively arranged at the upper ends of the two air nozzles 483 and are oppositely arranged.

The sintering rotation device 481 comprises a gear seat 4811, a driving gear 4812, a driven gear 4813 and a sintering rotation driving device (not labeled in the figure), wherein the gear seat 4811 and the sintering rotation driving device are both arranged on the frame 1, the driving gear 4812 is in transmission connection with a power output end of the sintering rotation driving device, the driven gear 4813 is arranged on the gear seat 4811, the air distributing valve head 482 is arranged on a gear shaft of the driven gear 4813, and the driven gear 4813 is meshed with the driving gear 4812. The driving gear 4812 is driven to rotate by the sintering rotation driving device, and the driven gear 4813 rotates along with the driving gear 4812, so that the rotation of the gas distributing valve head 482 is realized. The sintering rotary driving device is generally a driving motor, and the air dividing valve head 482 is in transmission connection with a power output shaft of the driving motor; the sintering rotary drive may also be a drive connection in drive connection with an external (or complete) drive.

As shown in fig. 4, the blackening apparatus 3 includes a third bulb holding and conveying mechanism 32, a bulb positioning mechanism 333, a blackening turntable 34, a blackening turntable rotating mechanism 35, a blackening lift driving device 36, a blackening support 37 and a blackening trough 38, the third bulb holding and conveying mechanism 32, the bulb positioning mechanism 33, the blackening turntable rotating mechanism 35 and the blackening lift driving device 36 are all mounted on the frame 1, the blackening turntable 34 is mounted on a power output end of the blackening turntable rotating mechanism 35, and a bulb loading station 341, a bulb positioning station 342 and a bulb blackening station 343 are provided along an outer circumference of the blackening turntable 34; the third bulb clamping and conveying mechanism 32 is arranged on the bulb loading station 341; the bulb positioning mechanism 33 is disposed on the bulb positioning station 342; the blackening lifting driving device 36 is arranged on the bulb blackening station 343; the black coating turntable 34 is provided with a plurality of clamping assemblies 344, and each clamping assembly 344 is uniformly distributed along the circumferential direction of the black coating turntable 34; the black coating bracket 37 is mounted on the power output end of the black coating lifting driving device 36, the power output end of the black coating lifting driving device 36 is upward, the black coating trough 38 is mounted on the black coating bracket 37, and the black coating trough 38 is positioned on the circumference of each clamping assembly 344 and below each clamping assembly 344.

The black coating turntable rotating mechanism 35 is typically a driving motor, and a power output shaft of the driving motor is in transmission connection with a rotating shaft of the black coating turntable 34.

The blackening lifting drive device 36 is typically a cylinder, the piston rod of which is arranged upwards, and the blackening support 37 is mounted at the end of the piston rod of the cylinder.

As shown in fig. 5, the grip assembly 344 includes a first grip 3441, a second grip 3442 and a compression spring 3443, where the first grip 3441 and the second grip 3442 are symmetrically disposed, the ends of the first grip 3441 and the second grip 3442 are hinged to each other and mounted on the black coating turntable 34, opposite inner sides of the first grip 3441 and the second grip 3442 are provided with rotatable rollers 3445, upper ends of the first grip 3441 and the second grip 3442 are provided with protruding columns 3444, and two ends of the compression spring 3443 are respectively sleeved on the protruding columns 3444 of the first grip 3441 and the second grip 3442, and the compression spring 3443 tightens the first grip 3441 and the second grip 3442. The compression spring 3443 tightens the first clamping hand 3441 and the second clamping hand 3442 to form a clamping area, so that the bulb can be effectively clamped and fixed, and the bulb clamp is simple in structure and convenient to install.

As shown in fig. 6, the blackening apparatus 3 further includes a hand-hold-open mechanism 345, the hand-hold-open mechanism 345 includes a top block 3451 and a top block driving device 3452, the top block driving device 3452 is mounted on the frame 1, the top block 3451 is mounted on a power output end of the top block driving device 3452, the top block 3451 is located below each hand-hold assembly 344, and a top end of the top block 3451 is located in the middle of the first hand-hold 3441 and the second hand-hold 3442, and a top end of the top block 3451 is in an abutting arrangement with the first hand-hold 3441 and the second hand-hold 3442. When the power output end of the top block driving device 3452 drives the top block 3451 to jack up upwards, the top end of the top block 3451 jacks up the first clamping hand 3441 and the second clamping hand 3442 so that the first clamping hand 3441 and the second clamping hand 3442 are opened, and the third bulb clamping and conveying mechanism 32 clamps bulbs between the opened first clamping hand 3441 and the opened second clamping hand 3442; the power output end of the top block driving device 3452 drives the top block 3451 to move downwards, and under the action of the restoring force of the compression spring 3443, the compression spring 3443 tightens the first clamping hand 3441 and the second clamping hand 3442 to form a clamping area, so that the bulb is clamped and fixed. The top block driving device 3452 is a cylinder, a piston rod of the cylinder is upward, and the top block 3451 is installed at the tail end of the piston rod of the cylinder; the top block drive 3452 may also be a drive connection in drive connection with an external (or complete) drive.

As shown in fig. 7, the third bulb holding and transporting mechanism 32, the first bulb holding and transporting mechanism 6, and the second bulb holding and transporting mechanism 7 each include a holding guide sleeve 321, a holding guide rod 322, a holding base 323, three holding jaws 324, a holding jaw opening and closing mechanism 325, and a holding drive mechanism 326 capable of driving the holding guide rod 322 to perform lifting and rotating actions; the clamping guide sleeve 321 is arranged on the frame 1, the axis of the clamping guide sleeve 321 is arranged along the vertical direction, and the clamping guide rod 322 is positioned in the clamping guide sleeve 321; the clamping seat 323 is arranged at the upper end of the clamping guide rod 322, and the middle parts of the three clamping jaws 324 are hinged with the clamping seat 323; the clamping jaw opening and closing mechanism 325 is arranged on the frame 1, and the power output end of the clamping jaw opening and closing mechanism 325 is hinged with the upper ends of the three clamping jaws 324; the clamping driving mechanism 326 is mounted on the frame 1, and a power output end of the clamping driving mechanism 326 is connected with a lower end of the clamping guide rod 322. First, the clamping driving mechanism 326 drives the clamping guide rod 322 to move downwards, the three clamping jaws 324 are placed above the bulb input device 1 with bulbs, and the clamping jaw opening and closing mechanism 325 drives the three clamping jaws 324 to open so as to clamp the bulbs on the bulb input device 1; then, the clamping driving mechanism 326 drives the clamping guide rods 322 to move upwards and rotate, so that the three clamping jaws 324 are rotated above the clamping hand assemblies 344 corresponding to the black coating turntables 34; then, the clamping driving mechanism 326 drives the clamping guide rods 322 to move downwards, the clamping jaw opening and closing mechanism 325 drives the three clamping jaws 324 to open, and the clamped bulb is loosened and placed in the clamping hand assemblies 344 corresponding to the black coating turntables 34; finally, the clamping driving mechanism 326 drives the clamping guide rods 322 to move upwards and rotate, so that the three clamping jaws 324 are rotated above the bulb input device 1 with bulbs; the holding and conveying operation of the bulb is repeated in this way.

The third bulb clamping and conveying mechanism 32, the first bulb clamping and conveying mechanism 6 and the second bulb clamping and conveying mechanism 7 all further comprise a limiting mechanism 327, the limiting mechanism 327 comprises a limiting guide rod 3271, a transverse limiting block 3272 and a longitudinal limiting rod 3273, the lower end of the limiting guide rod 3271 is connected with the upper end of the clamping guide rod 322, the transverse limiting block 3272 is arranged at the upper end of the limiting guide rod 3271, and the longitudinal limiting rod 3273 is arranged on the transverse limiting block 3272 and correspondingly matched with the clamping seat 323.

The clamping driving mechanism 326 comprises two lifting clamping pieces 3261, two rotating clamping pieces 3262, a lifting deflector 3263 and a rotating deflector 3264 which are arranged on the clamping guide rod 322, the movable end of the lifting deflector 3263 is positioned between the two lifting clamping pieces 3261, the connecting end of the lifting deflector 3263 is in transmission connection with an external (or whole machine) driving device, the lifting deflector 3263 moves up and down to push the two lifting clamping pieces 3261 to drive the clamping guide rod 322 to move up and down, the rotating deflector 3264 is positioned between the two rotating clamping pieces 3262, the rotating deflector 3264 is in transmission connection with an external (or whole machine) driving device, and the reciprocating motion of the rotating deflector 3264 pushes the two rotating clamping pieces 3262 to drive the clamping guide rod 322 to axially rotate back and forth.

The jaw opening and closing mechanism 325 includes a pull cord drive 3251, a pull cord 3252, a return spring 3253, a spring connecting rod 3254, and a pull rod 3255; the clamping seat 323 is provided with an inner cavity 3231, and the pull rod 3255 is positioned in the inner cavity 3231 of the clamping seat 323; the stay cord drive device 3251 is installed on frame 1, and the one end of stay cord 3252 is connected with the power take off end of stay cord drive device 3251, and the other end of stay cord 3252 is connected with the one end of spring connecting rod 3254 through reset spring 3253, and the other end of spring connecting rod 3254 is connected with the one end of pull rod 3255, and the other end of pull rod 3255 is articulated with the upper end of three clamping jaw 324. In a state where no external force acts on the three jaws 324, since the return spring 3253 has a certain compression amount, the three jaws 324 are in a normally open state by the tension of the return spring 3253 and the tension of the spring link 3254. When the bulb lamp is used, the pull rope driving device 3251 drives the pull rope 3252 to generate upward pulling force, the pull rod 3255 is driven to move upwards along the axial direction of the pull rod 3255 sequentially through the pull rope 3252, the reset spring 3253 and the spring connecting rod 3254, the three clamping jaws 324 clamp inwards under the action of the pull rod 3255, and when a bulb is arranged below the three clamping jaws 324, the three clamping jaws 324 clamp the bulb lamp; when the pull rope driving device 3251 stops driving the pull rope 3252, the pull rod 3255 moves downwards along the axial direction of the pull rod 3255 under the action of the restoring force of the restoring spring 3253, so that the three clamping jaws 324 are opened outwards, and the clamped bulb is loosened; after the bulb is released, the pull rod 3255 is reset under the restoring force of the restoring spring 3253, and the three clamping jaws 324 are reset to a normally open state. The pull rope driving device 252 is generally an air cylinder, a piston rod of the air cylinder is arranged upwards, and one end of the pull rope 3252 is connected with the tail end of the piston rod of the air cylinder.

The bulb positioning mechanism 33 comprises a positioning lifting driving device (not shown in the figure), a positioning guide sleeve 331, a positioning guide rod 332, a screw nut 333, a pressing rod 334, a pressing spring 335 and a U-shaped fork 336, wherein the positioning lifting driving device is arranged on the frame 1, the power output end of the positioning lifting driving device is upwards, the positioning guide rod 332 is arranged in the positioning guide sleeve 331, the lower end of the positioning guide rod 332 is fixedly connected with the power output end of the positioning lifting driving device, the screw nut 333 is arranged on the positioning guide sleeve 331, the screw rod 3331 is arranged along the radial direction of the black coating turntable 34, one end of the pressing rod 334 is connected with the end of the screw rod 3331 far away from the outer circumference of the black coating turntable 34, the other end of the pressing rod 334 is connected with the upper end of the positioning guide rod 332, the U-shaped fork 336 is arranged on the end of the screw rod 3331 close to the outer circumference of the black coating turntable 34, and the U-shaped fork 336 is horizontally arranged; the positioning guide sleeve 331 is provided with a first positioning column 3311, the positioning guide rod 332 is provided with a second positioning column 3321, and two ends of the pressing spring 335 are respectively sleeved on the first positioning column 3311 and the second positioning column 3321. When the black coating rotary table 34 is driven to rotate by the black coating rotary table rotating mechanism 35, and the bulb holder assembly 344 with the bulb is rotated to a station corresponding to the U-shaped fork 336, the positioning lifting driving device drives the positioning guide rod 332 to ascend along the axial direction of the positioning guide sleeve 331, meanwhile, the screw rod 3331 and the U-shaped fork 336 thereon move inwards along the radial direction of the black coating rotary table 34, the U-shaped fork 336 moves to the upper part of the bulb holder assembly 344, and the bulb holder in the bulb holder assembly 344 is lifted upwards and positioned to a fixed height; then, the positioning elevating driving means drives the positioning guide bar 332 to descend along the axial direction of the positioning guide sleeve 331 while the screw rod 3331 and the U-shaped fork 336 thereon are moved outward in the radial direction of the black coating turntable 34, and the U-shaped fork 336 is withdrawn from the bulb. The positioning lifting driving device is generally an air cylinder, a piston rod of the air cylinder is arranged upwards, and the lower end of the positioning guide rod 332 is arranged at the tail end of the piston rod of the air cylinder.

The blackening device 3 further comprises a liquid receiving device 39 and a vacuum liquid sucking device 310, wherein the liquid receiving device 39 and the vacuum liquid sucking device 310 are both arranged on the blackening bracket 37, the liquid receiving device 39 is positioned at the next station of the bulb blackening station 343, and the vacuum liquid sucking device 310 is positioned at the next station of the liquid receiving device 39.

The liquid receiving device 39 comprises a liquid receiving upright post 391, a liquid receiving sheet 392 and a liquid receiving bottle 393, wherein the liquid receiving upright post 391 and the liquid receiving bottle 393 are both arranged on the black coating bracket 37, the liquid receiving sheet 392 is arranged on the liquid receiving upright post 391, the liquid receiving sheet 392 is positioned on the circumference of each clamping assembly 344 and below each clamping assembly 344, the liquid receiving sheet 392 is obliquely downwards arranged, and the bottle mouth of the liquid receiving bottle 393 is positioned under the oblique direction of the liquid receiving sheet 392. As some Xu Tuliao remains on the lamp cap part of the black-coated bulb, when the black-coated lifting driving device 36 drives the black-coated bracket 37 to lift upwards, the liquid receiving sheet 392 is lifted upwards along with the black-coated bracket 37, the lamp cap part of the black-coated bulb just contacts with the upper surface of the liquid receiving sheet 392, and some residual paint on the lamp cap part is connected to the liquid receiving sheet 392, and as the liquid receiving sheet 392 is obliquely arranged downwards, the residual paint can flow into the liquid receiving bottle 393 along the oblique direction of the liquid receiving sheet 392, so that the residual paint is collected and the environment is not polluted.

The vacuum imbibition device 310 comprises an imbibition bottle 3101, a bottle stopper 3102, an exhaust tube 3103 and an exhaust pump 3104, wherein the exhaust pump 3104 is arranged on the frame 1, the imbibition bottle 3101 is arranged on the blackening support 37 and is positioned below each clamping assembly 344, the bottle stopper 3102 is covered at the opening of the imbibition bottle 3101, a liquid inlet channel 3105 is arranged on the bottle stopper 3102, the liquid inlet channel 3105 is communicated with the cavity of the imbibition bottle 3101, and the cavity of the imbibition bottle 3101 is connected with the exhaust pump 3104 through the exhaust tube 3103. As some Xu Tuliao may remain after the lamp cap portion of the black-coated bulb passes through the liquid receiving device 39, when the black-coated lifting driving device 36 drives the black-coated bracket 37 to lift upwards, the liquid suction bottle 3101 lifts upwards along with the black-coated bracket 37, the lamp cap portion of the black-coated bulb just contacts with the liquid inlet channel port of the liquid suction bottle 3101, the air pump 3104 is started, the air pump 3104 pumps air inside the liquid suction bottle 3101 through the air pump tube, negative pressure is formed inside the liquid suction bottle 3101, and some residual paint at the lamp cap portion is sucked into the liquid suction bottle 3101 along with the liquid inlet channel 3105, so that the residual paint is collected again.

As shown in fig. 8, a primary tube straightening mechanism 11, a secondary tube straightening mechanism 12 and an air drying device 13 are further arranged between the blackening device 3 and the preheating oven 44 in sequence, the primary tube straightening mechanism 11 and the secondary tube straightening mechanism 12 are respectively positioned above the bulb positioning holes 421, and the air drying device 13 is positioned below the bulb positioning holes 421.

The primary pipe correcting mechanism 11 comprises a primary pipe correcting bracket 111, a primary movable clamping jaw 112, a primary fixed clamping jaw 113, a primary pull rope driving device (not labeled in the figure), a primary pull rope 114 and a primary return spring 115, wherein the primary pipe correcting bracket 111 and the primary pull rope driving device are both arranged on the frame 1, the ends of the primary movable clamping jaw 112 and the primary fixed clamping jaw 113 are mutually hinged and arranged on the primary pipe correcting bracket 111, one end of the primary pull rope 114 is connected with a power output end of the primary pull rope driving device, and the other end of the primary pull rope 114 is connected with the primary movable clamping jaw 112; the primary movable clamping jaw 112 and the primary fixed clamping jaw 113 are respectively provided with a primary convex column 1121, and two ends of a primary return spring 115 are respectively sleeved on the primary convex columns 1121 of the primary movable clamping jaw 112 and the primary fixed clamping jaw 113. When the primary pull rope driving device is used, the primary pull rope 114 is driven to generate upward pull force, the primary pull rope 114 and the primary return spring 115 sequentially drive the primary movable clamping jaw 112 to move along the reverse direction of the primary fixed clamping jaw 113, and the primary movable clamping jaw 112 is in an opened state; when the bulbs are arranged below the primary movable clamping jaw 112 and the primary fixed clamping jaw 113, the primary pull rope driving device drives the primary pull rope 114 to generate downward pulling force, and under the action of the restoring force of the primary restoring spring 115, the primary movable clamping jaw 112 moves along the direction of the primary fixed clamping jaw 113, so that the bulbs below the primary movable clamping jaw are clamped to perform tube straightening. The primary rope driving device is generally a cylinder, a piston rod of the cylinder is upward, and one end of the primary rope 114 is connected to a piston rod end of the cylinder.

The secondary pipe positive mechanism 12 comprises a secondary pipe positive support 121, a secondary movable clamping jaw 122, a secondary fixed clamping jaw 123, a secondary stay cord driving device (not labeled in the figure), a secondary stay cord 124 and a secondary return spring 125, wherein the secondary pipe positive support 121 and the secondary stay cord driving device are both arranged on the frame 1, the ends of the secondary movable clamping jaw 122 and the secondary fixed clamping jaw 123 are mutually hinged and arranged on the secondary pipe positive support 121, one end of the secondary stay cord 124 is connected with a power output end of the secondary stay cord driving device, and the other end of the secondary stay cord 124 is connected with the secondary movable clamping jaw 122; the secondary moving clamping jaw 122 and the secondary fixed clamping jaw 123 are respectively provided with a secondary convex column 1221, and two ends of the secondary return spring 125 are respectively sleeved on the secondary convex columns 1221 of the secondary moving clamping jaw 122 and the secondary fixed clamping jaw 123. When the device is used, the secondary stay cord driving device drives the secondary stay cord 124 to generate upward tension, and the secondary stay cord 124 and the secondary return spring 125 sequentially drive the secondary movable clamping jaw 122 to move along the reverse direction of the secondary fixed clamping jaw 123, so that the secondary movable clamping jaw 122 is in an opened state; when the bulbs are arranged below the secondary moving clamping jaw 122 and the secondary fixed clamping jaw 123, the secondary pull rope driving device drives the secondary pull rope 124 to generate downward pulling force, and under the action of the restoring force of the secondary restoring spring 125, the secondary moving clamping jaw 122 moves along the direction of the secondary fixed clamping jaw 123, so that the bulbs below the secondary moving clamping jaw are clamped and the tube is again aligned. The secondary pull rope driving device is generally an air cylinder, a piston rod of the air cylinder is upwards arranged, and one end of the secondary pull rope 124 is connected with the tail end of the piston rod of the air cylinder.

The air drying device 13 comprises an air blower (not labeled in the figure), two air collecting covers 131 and two air supply pipes 132, wherein the air blower and the two air collecting covers 131 are arranged on the frame 1, the two air collecting covers 131 are adjacently arranged, air outlets of the two air collecting covers 131 are positioned below the positioning holes 421 of each bulb, and air inlets of the two air collecting covers 131 are respectively communicated with air outlets of the air blower through corresponding air supply pipes 132. The turntable rotating mechanism 43 drives the turntable 42 to rotate, and the lamp with the blackened lamp cap part is rotated to the air outlets of the two air collecting hoods 131 to dry the coating on the surface of the lamp by blowing.

The last sintering unit 48 still is equipped with detection device 8 between the second bulb centre gripping transport mechanism 7, detection device 8 is including detecting drive arrangement (not marked in the figure), detect uide bushing 81, detect guide bar 82, detect support 83, detect electrode holder 84 and three detect electrode link 85, detect drive arrangement and detect uide bushing 81 and all install on frame 1, detect guide bar 82 is in detect uide bushing 81, detect the lower extreme of guide bar 82 and detect drive arrangement's power take off end transmission and be connected, detect support 83 installs the upper end at detect guide bar 82, detect electrode holder 84 is installed on detect support 83, three detect electrode link 85 is all installed on detect electrode holder 84, and three detect electrode link 85 respectively with the control signal input electricity that temperature control system 10 corresponds is connected. The power output end of the detection driving device drives the detection guide rod 82 to move downwards along the axial direction of the detection guide rod 82, the detection electrode seat 84 and the three detection electrode connecting ends 85 move downwards along with the detection guide rod 82, the three detection electrode connecting ends 85 are respectively contacted with electrodes at the upper ends of bulbs below the detection electrode seat, a circuit is connected, each bulb is detected, and whether the bulbs are normally lighted after high-temperature sintering is detected. The detection driving device is generally an air cylinder, a piston rod of the air cylinder is upwards arranged, and the lower end of the detection guide rod 82 is in transmission connection with the tail end of the piston rod of the air cylinder; the detection driving device can also be a transmission connecting piece, and the transmission connecting piece is in transmission connection with an external (or complete machine) driving device.

step 1: the bulbs are manually placed on the bulb input device 1, the third bulb clamping and conveying mechanism 32 clamps the bulbs on the corresponding clamping assemblies 344 of the black coating turnplate 34 (namely, at the bulb feeding station 341), the black coating turnplate rotating mechanism 35 drives the black coating turnplate 34 to rotate, and the clamping assemblies 344 with the bulbs placed are rotated to the bulb positioning station 342;

step 2: the bulb positioning mechanism 33 lifts and positions the bulb on the clamp assembly 344 upwards, and the black coating turntable rotating mechanism 35 drives the black coating turntable 34 to rotate so as to rotate the lifted and positioned bulb to a bulb black coating station 343;

step 3: the black coating lifting driving device 36 drives the black coating bracket 37 to lift upwards, the black coating trough 38 lifts upwards along with the black coating bracket 37, and the lamp cap part of the bulb above the black coating trough 38 just contacts with the coating in the black coating trough 38;

step 4: the black coating lifting driving device 36 drives the black coating bracket 37 to descend downwards, the black coating trough 38 descends downwards along with the black coating bracket 37, the lamp cap part of the lamp bulb above the black coating trough 38 is separated from the coating in the black coating trough 38, the black coating rotary table 34 is driven by the black coating rotary table rotating mechanism 36 to rotate, and the lamp cap part of the lamp bulb with black coating is rotated below the first lamp bulb clamping and conveying mechanism 6; .

Step 5: the first bulb clamping and conveying mechanism 6 clamps and conveys bulbs with blackened lamp holders from the blacking device 3 to corresponding bulb positioning holes 421, the turntable rotating mechanism 43 drives the turntable 42 to rotate, the bulbs are sequentially rotated below the primary tube correcting mechanism 11 and the secondary tube correcting mechanism 12, and the bulbs are clamped and corrected for two times;

step 6: the turntable rotating mechanism 43 drives the turntable 42 to rotate, so that the bulbs just in the tubes are rotated to the air outlets of the two air collecting hoods 131, and the coatings on the surfaces of the bulbs are dried by blowing;

step 7: the turntable rotating mechanism 43 drives the turntable 42 to rotate, and sequentially rotates each air-dried bulb above the preheating oven 44 to externally bake and heat each bulb shell;

step 8: the power output end of the lighting driving device 45 drives each first lighting device 46 and each second lighting device 47 to be respectively contacted with the electrode at the upper end of the bulb below the first lighting device and the second lighting device, a circuit is connected to light the filament of each bulb, the brightness of each bulb gradually increases along with the rotation of the turntable 42, the temperature inside the bulb also gradually increases, and the interior of each bulb is gradually heated up to be lighted and heated on the premise that the preheating oven 44 externally heats each bulb;

Step 9: the turntable rotating mechanism 43 drives the turntable 42 to rotate, the bulbs which are preheated inside are rotated above the sintering units 48, the sintering units 48 burn each bulb shell in turn, and the bulb shells are heated at high temperature again;

step 10: the turntable rotating mechanism 43 drives the turntable 42 to rotate, the sintered bulbs are rotated below three detection electrode connecting ends 85, the power output end of the detection driving device drives the detection guide rod 82 to move downwards along the axial direction of the detection guide rod 82, the detection electrode seat 84 and the three detection electrode connecting ends 85 move downwards along with the detection guide rod 82, the three detection electrode connecting ends 85 are respectively contacted with electrodes at the upper ends of bulbs below the detection electrode connecting ends, and a circuit is connected to detect each bulb;

step 11: the turntable rotation mechanism 43 drives the turntable 42 to rotate, and the second bulb clamping and conveying mechanism 7 clamps the detected bulbs onto the bulb output device 5 to naturally cool the bulbs.

In a specific scheme, the clamping driving mechanism can comprise two independent driving devices, the clamping driving mechanism comprises a lifting cylinder, a lifting seat and a rotating cylinder, the lifting seat is arranged on a piston rod of the lifting cylinder, the rotating cylinder is arranged on the lifting seat, and the piston rod of the rotating cylinder is used as a power output end and is connected with the clamping guide rod.

In addition, it should be noted that, in the specific embodiments described in the present specification, names of various parts and the like may be different, and all equivalent or simple changes of the structures, features and principles described in the conception of the present invention are included in the protection scope of the present invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions in a similar manner without departing from the scope of the invention as defined in the accompanying claims.

Claims

1. An automatic black sintering device of lamp holder, characterized by: the device comprises a frame, a bulb input device, a blackening device, a preheating sintering device, a bulb output device, a first bulb clamping and conveying mechanism and a second bulb clamping and conveying mechanism, wherein the bulb input device, the blackening device, the preheating sintering device and the bulb output device are sequentially arranged on the frame; the preheating sintering device comprises a turntable, a turntable rotating mechanism, a preheating oven, a lighting driving device, a plurality of first lighting devices, a plurality of second lighting devices and a plurality of sintering units, wherein the turntable rotating mechanism, the preheating oven, the lighting driving device and the sintering units are all arranged on a frame, and the turntable is arranged on a power output end of the turntable rotating mechanism; the turntable is provided with a plurality of bulb positioning holes, and the bulb positioning holes are uniformly distributed along the circumferential direction of the turntable; the preheating oven and each sintering unit are sequentially arranged along the circumferential direction of the turntable and are positioned below each bulb positioning hole, and a filament heating area is arranged between the tail end of the preheating oven and the first sintering unit; the power output end of the lighting driving device is downwards arranged, each first lighting device and each second lighting device are arranged on the power output end of the lighting driving device, each first lighting device is arranged at the rear section of the preheating oven and above each bulb positioning hole, and each second lighting device is arranged in the filament heating zone and above each bulb positioning hole; the heating temperature of the first lighting device is smaller than the heating temperature of the second lighting device.

2. The automatic lamp cap blackening and sintering device as claimed in claim 1, wherein: the preheating oven further comprises a temperature control system, and a control signal output end of the preheating oven is electrically connected with a control signal input end corresponding to the temperature control system.

3. The automatic lamp cap blackening and sintering device as claimed in claim 2, wherein: the first lighting device and the second lighting device comprise a lighting guide bracket, a lighting guide sleeve, a lighting guide rod, a positioning sleeve, a reset spring, a lighting electrode seat and three lighting electrode connecting ends, wherein the lighting guide bracket is fixedly arranged on the frame; the electrode holder is installed in the lower extreme of lighting the guide bar, and three are lighted the electrode link and are all installed on lighting the electrode holder, and three are lighted the electrode link and are connected with the control signal input that the temperature control system corresponds respectively electricity.

4. The automatic lamp cap blackening and sintering device as claimed in claim 1, wherein: the lighting driving device comprises a lighting lifting driving device, a pressing guide sleeve, a pressing guide rod, a pressing plate and a plurality of pressing pieces, wherein the lighting lifting driving device and the pressing guide sleeve are both arranged on the frame, the power output end of the lighting lifting driving device is upward, the pressing guide rod is arranged in the pressing guide sleeve, the lower end of the pressing guide rod is in transmission connection with the power output end of the lighting lifting driving device, the pressing pieces are arranged at the upper end of the pressing guide rod, and each pressing piece is arranged on the pressing plate; the number of the lower pressing sheets is the same as that of the lighting guide rods and corresponds to the number of the lighting guide rods one by one, and each lower pressing sheet is respectively positioned above the upper end of each lighting guide rod.

5. The automatic lamp cap blackening and sintering device as claimed in claim 1, wherein: the sintering unit comprises a sintering rotating device, a gas dividing valve head, at least one gas spraying pipe and at least one ignition nozzle, wherein the sintering rotating device is arranged on the frame, and the gas dividing valve head is arranged on a power output end of the sintering rotating device; an air inlet channel which is vertically communicated is arranged in the air dividing valve head, and the air dividing valve head is connected with an external air source through the air inlet channel; the lower end of the air jet pipe is arranged on the air dividing valve head and communicated with the air inlet channel, and the ignition nozzle is arranged at the upper end of the air jet pipe and below each bulb positioning hole.

6. The automatic lamp cap blackening and sintering device according to claim 5, wherein: the sintering rotary device comprises a gear seat, a driving gear, a driven gear and a sintering rotary driving device, wherein the gear seat and the sintering rotary driving device are both arranged on the frame, the driving gear is in transmission connection with a power output end of the sintering rotary driving device, the driven gear is arranged on the gear seat, the air dividing valve head is arranged on a gear shaft of the driven gear, and the driven gear is meshed with the driving gear.

7. The automatic lamp cap blackening and sintering device as claimed in claim 1, wherein: the black coating device comprises a third bulb clamping and conveying mechanism, a bulb positioning mechanism, a black coating turntable rotating mechanism, a black coating lifting driving device, a black coating bracket and a black coating trough, wherein the third bulb clamping and conveying mechanism, the bulb positioning mechanism, the black coating turntable rotating mechanism and the black coating lifting driving device are all arranged on a frame, the black coating turntable is arranged on a power output end of the black coating turntable rotating mechanism, and a bulb feeding station, a bulb positioning station and a bulb black coating station are arranged along the peripheral direction of the black coating turntable; the third bulb clamping and conveying mechanism is arranged on the bulb feeding station; the bulb positioning mechanism is arranged on the bulb positioning station; the blackening lifting driving device is arranged on a bulb blackening station; the black coating turntable is provided with a plurality of clamping assemblies, and each clamping assembly is uniformly distributed along the circumferential direction of the turntable; the black coating bracket is arranged on the power output end of the black coating lifting driving device, the power output end of the black coating lifting driving device is upward, the black coating trough is arranged on the black coating bracket, and the black coating trough is positioned on the circumference of each clamping assembly and below each clamping assembly.

8. The automatic lamp cap blackening and sintering device as claimed in claim 7, wherein: the tong subassembly includes first tong, second tong and compression spring, and first tong and second tong symmetry set up, and the tip of first tong and second tong is articulated each other to be installed on the blacking carousel, and the medial surface that first tong and second tong are relative all is equipped with rotatable gyro wheel, and the up end of first tong and second tong all is equipped with the projection, and compression spring's both ends cover respectively on the projection of first tong and second tong, compression spring is taut with first tong, second tong.

9. The automatic lamp cap blackening and sintering device as claimed in claim 7, wherein: the third bulb clamping and conveying mechanism, the first bulb clamping and conveying mechanism and the second bulb clamping and conveying mechanism all comprise clamping guide sleeves, clamping guide rods, clamping seats, three clamping jaws, clamping jaw opening and closing mechanisms and clamping driving mechanisms capable of driving the clamping guide rods to do lifting and rotating actions; the clamping guide sleeve is arranged on the frame, the axis of the clamping guide sleeve is arranged in the vertical direction, and the clamping guide rod is positioned in the clamping guide sleeve; the clamping seat is arranged at the upper end of the clamping guide rod, and the middle parts of the three clamping jaws are hinged with the clamping seat; the clamping jaw opening and closing mechanism is arranged on the frame, and the power output end of the clamping jaw opening and closing mechanism is hinged with the upper ends of the three clamping jaws; the clamping driving mechanism is arranged on the frame, and the power output end of the clamping driving mechanism is connected with the lower end of the clamping guide rod.

10. The automatic lamp cap blackening and sintering device as claimed in claim 1, wherein: a primary tube straightening mechanism, a secondary tube straightening mechanism and an air drying device are sequentially arranged between the blackening device and the preheating oven, the primary tube straightening mechanism and the secondary tube straightening mechanism are respectively positioned above the bulb positioning holes, and the air drying device is positioned below the bulb positioning holes; the primary pipe correcting mechanism comprises a primary pipe correcting bracket, a primary movable clamping jaw, a primary fixed clamping jaw, a primary pull rope driving device, a primary pull rope and a primary reset spring, wherein the primary pipe correcting bracket and the primary pull rope driving device are both arranged on the frame, the ends of the primary movable clamping jaw and the primary fixed clamping jaw are hinged to each other and arranged on the primary pipe correcting bracket, one end of the primary pull rope is connected with the power output end of the primary pull rope driving device, and the other end of the primary pull rope is connected with the primary movable clamping jaw; the primary movable clamping jaw and the primary fixed clamping jaw are respectively provided with a primary convex column, and two ends of a primary return spring are respectively sleeved on the primary convex columns of the primary movable clamping jaw and the primary fixed clamping jaw; the secondary pipe positive mechanism comprises a secondary pipe positive support, a secondary movable clamping jaw, a secondary fixed clamping jaw, a secondary pull rope driving device, a secondary pull rope and a secondary reset spring, wherein the secondary pipe positive support and the secondary pull rope driving device are both arranged on the frame, the ends of the secondary movable clamping jaw and the secondary fixed clamping jaw are hinged to each other and arranged on the secondary pipe positive support, one end of the secondary pull rope is connected with a power output end of the secondary pull rope driving device, and the other end of the secondary pull rope is connected with the secondary movable clamping jaw; the two ends of the secondary reset spring are respectively sleeved on the secondary convex columns of the secondary moving clamping jaw and the secondary fixed clamping jaw; the air drying device comprises an air blower, two air collecting hoods and two air supply pipes, wherein the air blower and the two air collecting hoods are installed on the frame, the two air collecting hoods are adjacently arranged, air outlets of the two air collecting hoods are arranged below the bulb positioning holes, and air inlets of the two air collecting hoods are respectively communicated with air outlets of the air blower through corresponding air supply pipes.