CN111730350B

CN111730350B - Leaf spring production line

Info

Publication number: CN111730350B
Application number: CN202010569298.3A
Authority: CN
Inventors: 梁起彰; 张国
Original assignee: Shandong Bolet Auto Parts Co ltd
Current assignee: Shandong Bolet Auto Parts Co ltd
Priority date: 2020-06-20
Filing date: 2020-06-20
Publication date: 2021-11-23
Anticipated expiration: 2040-06-20
Also published as: CN111730350A

Abstract

The invention relates to the technical field of plate spring processing equipment, and particularly discloses a plate spring production line which comprises a feeding device, a cutting and drilling device, a plate coiling machine, a centering and hoisting device, a testing device, a heating furnace, a bending forming machine and a quenching device, wherein the heating furnace, the bending forming machine and the quenching device comprise the following components in parts by weight: the heating furnace and the bending forming machine of the production line can heat and bend different steel plates forming a plate spring simultaneously, so that the steel plates have consistent performance, the performance of the plate spring formed by the plate spring is more stable, a plurality of steel plates are processed simultaneously, the production efficiency is improved, the production line is energy-saving and environment-friendly, the quenching device of the production line has a good quenching effect, and the performance of the plate spring is further improved.

Description

Leaf spring production line

Technical Field

The invention relates to the technical field of plate spring processing equipment, in particular to a plate spring production line.

Background

The spring is formed by overlapping a single steel plate or a plurality of steel plates. The plate spring has a large damping capacity due to friction between plates, and is widely used in suspensions of automobiles, tractors, and railway vehicles. In the process of machining the plate spring, processes such as heating, bending and quenching need to be performed on the steel plate.

In the technical scheme of the heating furnace in the prior art, only a single plate spring can be heated, and only the end part of the plate spring can be heated, so that the heating efficiency is low and the function is single; when heating the leaf spring, do not preheat the leaf spring, directly heat, there is certain influence to the performance of steel sheet, and the heating mode who adopts is fuel combustion heating, has certain polluted environment's problem.

In the prior art, for example, in a chinese patent publication (patent No. ZL201821019249.7, patent name: a steel plate bending machine), technical solutions of bending machines are as follows: the utility model provides a steel plate bending machine, includes the frame, set up in the footstock at frame top, the drive arrangement who is connected with the footstock, with the frame sliding connection on bend the mechanism and bear the mechanism of bending under in the frame, drive arrangement is used for the drive on bend the mechanism and slide from top to bottom, on bend the mechanism and include first crossbeam and the cutter of being connected with first crossbeam, first crossbeam with frame sliding connection, the mechanism of bending includes the second crossbeam down, the second crossbeam seted up with the sword groove that the cutter is corresponding, steel plate bending machine is still including setting up the laser emitter in the frame, laser emitter is used for with the light beam that laser emitter sent aims at the sword groove.

However, the above technical solutions still have the following problems: only a single plate can be bent, and the bending degree of the plate spring made of the same group of plates may be inconsistent, so that the integrity of the plate spring formed by a plurality of plates is poor, and the processing efficiency of the processing method is low.

The prior art regarding quenching apparatuses also has the following problems: the temperature of the upper quenching liquid is high, and the temperature of the bottom quenching liquid is low, so that the quenching effect is influenced.

Therefore, it is necessary to provide a leaf spring production line to solve the above technical problems.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a plate spring production line, wherein a heating furnace and a bending forming machine of the production line can simultaneously heat and bend different steel plates forming a plate spring, so that the steel plates have consistent performance, the performance of the formed plate spring is more stable, a plurality of steel plates are simultaneously processed, the production efficiency is improved, the production line is energy-saving and environment-friendly, and a quenching device of the production line has a good quenching effect and further improves the performance of the plate spring.

The purpose of the invention is realized by the following technical scheme:

a plate spring production line comprises a feeding device, a cutting and drilling device, a crimping machine, a centering and hoisting device, a testing device, a heating furnace, a bending forming machine and a quenching device;

the feeding, cutting and drilling device comprises: the tower crane comprises a tower crane and a tower crane, wherein a walking structure is arranged on the tower crane, a material sucking electromagnet is arranged at the lower part of the walking structure, the tower crane further comprises a cutting device for cutting a steel plate at a fixed length and a drilling device for drilling the center of the cut plate, and the steel plate is conveyed to the material cutting and drilling device by the material sucking electromagnet;

the heating furnace comprises a furnace body and a steerable conveying device, wherein the steerable conveying device comprises a first conveying section and a second conveying section, the rear half section of the first conveying section is arranged on the front side in the furnace body, the second conveying section of the steerable conveying device is arranged in the furnace body, the tail end of the second conveying section extends out of the furnace body, the furnace body comprises a first heating section and a second heating section, electric heating components are arranged in the first heating section and the second heating section, a preheating zone is arranged at the front end of the first heating section, a liftable heat insulation plate is arranged between the first heating section and the second heating section, and the heat insulation plate is connected with a telescopic rod of a push-pull cylinder;

the bending forming machine comprises: the bending device comprises a machine body, wherein a conveying device is arranged on the machine body and penetrates through the middle lower part of the machine body, a bending device is arranged on the machine body on the upper part of the conveying device, the bending device comprises a movable die assembly and a pressing die assembly which are matched with each other, and the bending device also comprises a supporting assembly for supporting the movable die assembly;

a connecting device: the bending machine is arranged between a heating furnace and a bending forming machine and comprises a heat-insulating cover body, wherein a transferring slide rail is arranged on the inner wall of the heat-insulating cover body, a transferring block is arranged on the transferring slide rail, an electromagnet is arranged at the lower end of the transferring block, and one side of the transferring block is connected with a telescopic rod of a transferring cylinder;

the quenching device is arranged on the lower side of the hoisting device and comprises a quenching liquid box body, a guide plate is arranged on the upper portion of the quenching liquid box body, and a turbulent flow structure is arranged on the lower portion of the quenching liquid box body.

By adopting the technical scheme: the feeding, cutting and drilling device cuts a raw steel plate into steel plates with certain lengths and used for manufacturing plate springs, holes are drilled in the center positions of the steel plates, the steel plates are conveyed to the conveying device of the heating furnace, the heating furnace heats the steel plates to be bent, the end portions of the steel plates can be heated through the first heating section firstly, then the steel plates are heated integrally after ear rolling is carried out by the ear rolling machine, when the heating is started, the steel plates are preheated firstly, the performance of the steel plates is guaranteed not to be damaged by direct heating, the heated steel plates are conveyed to the bending forming machine through the linking device for bending forming, the equipment set can simultaneously process a plurality of steel plates forming one plate spring, the production efficiency is improved, the electromagnets of the linking device are electrified intermittently, and after the tail end of the furnace body is electrified to adsorb the steel plates, the transfer cylinder pushes the transfer block to advance to the conveying device of the bending forming machine, put down the steel sheet, bending forming, later by centering and hoist the device, the steel sheet centering after each bending, centering device centering workstation is equipped with a bottom plate on the centering workstation, is equipped with the centering rod on the bottom plate, after the centering rod passed the centre bore of steel sheet and realizes the centering, the hoist device hangs and gets a set of steel sheet and get into guenching unit and quench, and the hoist device can adopt the manipulator, because the upper portion of quench liquid box is equipped with the guide plate, the lower part of quench liquid box is equipped with the vortex structure, and hot quench liquid is dispersed to the box avris under the effect of guide plate, supplements the quench liquid of above-mentioned vacancy by the lower quench liquid of bottom temperature, in addition is provided with the vortex structure, can be better quench the steel sheet.

The present invention in a preferred example may be further configured to: first conveying section and second conveying section on all be equipped with conveying assembly, the bottom of first conveying section be equipped with the revolving stage, the downside of revolving stage is equipped with the fixed station, still including making the revolving stage relative fixed station pivoted slewing mechanism.

By adopting the technical scheme: the first conveying section and the second conveying section are arranged in a split mode, the first conveying section can rotate through the rotating mechanism, the first conveying section and the second conveying section can be combined into a whole according to needs, the steel plate conveying the whole body enters the heating furnace to be heated, the steel plate conveying part can also be partially turned to be used in a split mode, the steel plate conveying part enters the furnace body to be heated, and the steel plate conveying part is curled into a rolling lug, so that the multipurpose of the heating furnace is achieved.

The present invention in a preferred example may be further configured to: the fixed table is provided with a rotary slide rail, the lower side of the rotary table is provided with a slide groove matched with the rotary slide rail, the rotating mechanism comprises a driving air cylinder arranged on the fixed table, a telescopic rod of the driving air cylinder is connected with a rack, and the rack is meshed with a gear fixed on the rotary table;

the conveying assembly comprises a plurality of first driven sprockets arranged on the cross beam of the first conveying frame and the cross beam of the second conveying frame and a first driving sprocket arranged at the outer end of the cross beam, the first driving sprocket is driven by a motor, and chain type conveying belts are meshed on the first driving sprocket and the first driven sprocket.

By adopting the technical scheme: the rotary sliding rail is arranged on the fixed table in a semicircular shape, the rotary table can rotate with the fixed table through the matching between the sliding groove and the rotary sliding rail, in order to realize the rotation, a rotating mechanism is arranged, a telescopic rod of the air cylinder extends out through a driving air cylinder fixed on the fixed table to drive a rack to move towards one direction, the rack is meshed with a gear to drive the gear to rotate, the gear is fixedly connected with the rotary table to drive the rotary table to rotate relative to the fixed table, and the combination or the split of the first conveying section and the second conveying section is realized; first support body through with revolving stage fixed connection, realized the fixed of first transmission section with the revolving stage, the conveying subassembly is used for conveying the steel sheet that is used for making the leaf spring of treating the heating, enters into the furnace body and heats.

The present invention in a preferred example may be further configured to: the chain type conveying belt comprises two first chains meshed with a first driving chain wheel and a first driven chain wheel, a plurality of rotating shafts are arranged between the two first chains, a segmented high-temperature-resistant conveying screen plate is arranged between the rotating shafts, and a push plate is further arranged on a single rotating shaft.

By adopting the technical scheme: the chain type conveying belt with the structure has high temperature resistance, can convey the steel plate to enter the furnace body for heating, and the push plate plays a role in pushing the steel plate, so that the steel plate does not slide on the conveying belt.

The present invention in a preferred example may be further configured to: the conveying device at least comprises two groups of second driving chain wheels and second driven chain wheels, the second driving chain wheels are driven by a stepping motor, second chains are arranged on the second driving chain wheels and the second driven chain wheels, a conveying belt is arranged between the two second chains, and a plurality of groups of steel plate inclined supporting plate groups are arranged on the conveying belt; each group of the steel plate inclined supporting plate groups comprises a first inclined supporting plate and a second inclined supporting plate, and the height of the first inclined supporting plate in the machine body is higher than that of the second inclined supporting plate.

By adopting the technical scheme: the second driving sprocket is driven by step motor and rotates to drive the rotation of second driven sprocket, drive the conveyer belt and rotate, wherein the conveyer belt has high temperature resistance, and steel sheet bearing diagonal group makes the steel sheet be in the device of slope on the conveyer belt, and the later stage of being convenient for is bent the steel sheet is vertical. Being close to the direction that the steel sheet got into the organism for first inclined support board, being the second inclined support board behind the first inclined support board, the height that highly is higher than the second inclined support board of first inclined support board, aim at makes the steel sheet slope, the one end that enters into the organism earlier in addition is higher than the one end that enters into the organism afterwards.

The present invention in a preferred example may be further configured to: the top of the machine body is provided with a centralized installation plate beam, and the movable die assembly, the die assembly and the supporting assembly are all installed on the centralized installation plate beam. The centralized mounting plate beam is used for mounting the movable mould assembly, the die assembly and the supporting assembly, and the integrity of the equipment is improved.

The movable mould assembly comprises a first movable mould, a second movable mould, a third movable mould, a fourth movable mould and a fifth movable mould, wherein two ends of the first movable mould, the second movable mould, the third movable mould, the fourth movable mould and the fifth movable mould are respectively connected with telescopic rods of a first driving cylinder group, a second driving cylinder group, a third driving cylinder group, a fourth driving cylinder group and a fifth driving cylinder group, and the first driving cylinder group, the second driving cylinder group, the third driving cylinder group, the fourth driving cylinder group and the fifth driving cylinder group are fixed on the centralized mounting plate beam in a trapezoidal shape from front to back. According to the quantity that the single steel sheet quantity of every shaping leaf spring set up the movable mould, this technical scheme is used for making five board-like leaf springs, and every drive cylinder group includes two cylinders for promote or reduce a movable mould, and the movable mould has the size to distinguish, can be gradually big by left side to right side, bends little steel sheet to big steel sheet to the leaf spring in proper order.

The die assembly comprises a first die head, a second die head, a third die head, a fourth die head and a fifth die head which are matched with each moving die of the moving die assembly, the first die head, the second die head, the third die head, the fourth die head and the fifth die head are all arranged on a die rod, the die rod is connected with a telescopic rod of a hydraulic cylinder, and the hydraulic cylinder can be arranged between the centralized mounting plate beam and the machine body in a vertical sliding mode through a lifting cylinder. The die heads are matched with the moving die, and the purpose of the die heads is to bend a single steel plate.

The supporting component comprises a first supporting plate, a second supporting plate, a third supporting plate, a fourth supporting plate and a fifth supporting plate which are used for supporting the movable moulds of the movable mould component, wherein the first supporting plate, the second supporting plate, the third supporting plate, the fourth supporting plate and the fifth supporting plate are all fixed on a supporting main rod, two ends of the supporting main rod are connected with telescopic rods of main rod lifting cylinders, and the main rod lifting cylinders are fixed at two ends of a concentrated mounting plate beam.

By adopting the technical scheme: the supporting plates correspond to the movable dies one to one, and the purpose is to provide a supporting force for the movable dies when the steel plate is bent, so that the acting force is prevented from acting only on the telescopic rods of the driving cylinder group, and the telescopic rods are prevented from being damaged.

The present invention in a preferred example may be further configured to: the outer side of the centralized mounting plate beam and the inner side of the machine body are both provided with lifting slide rails, and the shell of the hydraulic cylinder is provided with slide grooves matched with the two lifting slide rails.

By adopting the technical scheme: the hydraulic cylinder can be lifted and dropped, so that the space is conveniently vacated, and the steel plate is vertically bent and formed.

The present invention in a preferred example may be further configured to: the guide plate is a circular arc-shaped plate which is arc-oriented towards the interior of the quenching liquid box body.

By adopting the technical scheme: when the steel plate enters the quenching box body, the quenching liquid on the upper portion is heated and boiled, the guide plate guides the flow to the side of the box body, the low-temperature quenching liquid at the bottom of the box body rises to be supplemented to the middle upper position of the box body, meanwhile, a turbulence structure is arranged in the box body, and the quenching liquid in the box body is disturbed to realize the cooling effect.

The present invention in a preferred example may be further configured to: the flow disturbing structure comprises a flow disturbing rod and a flow disturbing sheet arranged on the flow disturbing rod.

By adopting the technical scheme: the turbulence rod and the box body are sealed, and the turbulence rod is driven to rotate by the motor.

In summary, the invention includes at least one of the following beneficial technical effects:

the heating furnace and the bending forming machine of the production line can heat and bend different steel plates forming a plate spring simultaneously, so that the steel plates have consistent performance, the performance of the plate spring formed by the plate spring is more stable, a plurality of steel plates are processed simultaneously, the production efficiency is improved, the production line is energy-saving and environment-friendly, the quenching device of the production line has a good quenching effect, and the performance of the plate spring is further improved.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

FIG. 2 is a schematic view of the structure of a heating furnace and a bending machine of the present invention.

FIG. 3 is a schematic view of the structure of the heating furnace of the present invention.

Fig. 4 is a schematic view of a steerable delivery device of the present invention.

Fig. 5 is a schematic view of the rotational structure of the present invention.

Fig. 6 is a schematic structural view of the chain conveyor belt of the present invention.

FIG. 7 is a schematic view of the engagement device of the present invention.

Fig. 8 is a schematic structural view of the bending machine of the present invention.

FIG. 9 is a schematic structural view of a movable die assembly of the present invention.

FIG. 10 is a schematic view of the mounting structure of the movable die assembly of the present invention.

FIG. 11 is a schematic view of the structure of the die assembly of the present invention.

Fig. 12 is a schematic structural view of the support assembly of the present invention.

The labels in the figure are:

100. a first transfer section; 110. a rotating table; 111. a chute; 120. a fixed table; 121. a slide rail; 130. a rotating mechanism; 131. a driving cylinder; 132. a rack; 133. a gear; 134. a mounting seat; 140. a first frame body; 200. a second transfer section; 210. a second frame body; 220. a cross beam; 300. a transfer assembly; 310. a first driven sprocket; 320. a first drive sprocket; 330. a chain conveyor belt; 331. a first chain; 332. a rotating shaft; 333. a high temperature resistant delivery screen; 334. pushing the plate; 400. a furnace body; 410. a first heating section; 411. a preheating zone; 420. a second heating section; 430. an electrical heating assembly; 440. a heat insulation plate; 450. a push-pull cylinder; 500. a feeding, cutting and drilling device; 510. tower crane; 520. a walking structure; 530. a material sucking electromagnet; 540. a cutting device; 550. a drilling device; 600. a joining device; 610. a heat preservation cover body; 620. a transfer slide rail; 630. a transfer block; 640. an electromagnet; 650. a transfer cylinder; 700. winding the earphone; 800. a centering and hoisting device; 810. centering the workbench; 811. a base plate; 812. a centering rod; 820. a manipulator; 900. a testing device; 1000. a body; 1100. installing plate beams in a centralized manner; 2000. a conveying device; 2100. a drive sprocket; 2200. a driven sprocket; 2300. a chain; 2400. a conveyor belt; 2500. a steel plate inclined supporting plate group; 2510. a first inclined support plate; 2520. a second inclined support plate; 3000. a bending device; 3100. a movable die assembly; 3101. a first movable mold; 3102. a second movable mold; 3103. a third movable mould; 3104. a fourth movable mold; 3105. a fifth movable mould; 3106. a first driving cylinder group; 3107. a second driving cylinder group; 3108. a third driving cylinder group; 3109. a fourth driving cylinder group; 3110. a fifth driving cylinder group; 3200. a die assembly; 3201. a first die head; 3202. a second die head; 3203. a third die head; 3204. a fourth die head; 3205. a fifth die head; 3206. a mold pressing rod; 3207. a hydraulic cylinder; 3208. lifting the slide rail; 3209. a lift cylinder; 3300. a support assembly; 3301. a first support plate; 3302. a second support plate; 3303. a third support plate; 3304. a fourth support plate; 3305. a fifth support plate; 3306. a support main rod; 3307. a main rod lifting cylinder; 3308. reinforcing rib plates; 4000. a quenching device 4100, a quenching liquid box body; 4200. a baffle; 4300. a turbulent flow structure; 4301. a spoiler bar; 4302. a spoiler.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example one

The first object of the present embodiment is achieved by the following embodiments:

referring to fig. 1, a leaf spring production line comprises a feeding, cutting and drilling device 500, a lug rolling machine 700, a centering and hoisting device 800 and a testing device 900, and further comprises a heating furnace, a bending forming machine and a quenching device 4000;

feeding, blanking and drilling device 500: the tower crane comprises a tower crane 510, a walking structure 520 arranged on the tower crane 510, a material sucking electromagnet 530 arranged on the lower part of the walking structure 520, a cutting device 540 for cutting a steel plate at a fixed length, and a drilling device 550 for drilling the center of the cut plate, wherein the steel plate is conveyed to the material cutting and drilling device 550 by the material sucking electromagnet 530;

the quenching device 4000 is arranged at the lower side of the hoisting device and comprises a quenching liquid box body 4100, a guide plate 4200 is arranged at the upper part of the quenching liquid box body 4100, and a turbulent flow structure 4300 is arranged at the lower part of the quenching liquid box body 4100.

The baffle 4200 is a circular arc shaped plate that arcs toward the inside of the quench liquid tank 4100. When the steel plate enters the quenching box body, the quenching liquid on the upper portion is heated and boiled, the guide plate 4200 guides the quenching liquid to the side of the box body, the low-temperature quenching liquid at the bottom of the box body rises to be supplemented to the middle upper position of the box body, meanwhile, a turbulence structure 4300 pair is further arranged in the box body, and the quenching liquid in the box body is disturbed, so that the cooling effect is realized. The spoiler structure 4300 includes a spoiler bar 4301 and a spoiler 4302 disposed on the spoiler bar 4301. The turbulence rod 4301 is sealed with the box body, and the turbulence rod 4301 is driven by a motor to rotate.

Referring to fig. 2 and 3, in the present embodiment, the heating furnace includes a furnace body 400 and a steerable conveyor.

In this embodiment, the bending forming machine includes a machine body 1000, a conveying device 2000 is disposed on the machine body 1000, the conveying device 2000 penetrates through the middle lower part of the machine body 1000, a bending device 3000 is mounted on the machine body 1000 on the upper part of the conveying device 2000, the bending device 3000 includes a movable die assembly 3100 and a pressing die assembly 3200 which are matched with each other, and a supporting assembly 3300 which supports the movable die assembly 3100;

referring to fig. 4, the steerable conveying device includes a first conveying section 100 and a second conveying section 200, a rear half section of the first conveying section 100 is disposed at a front side inside a furnace body 400, the second conveying section 200 of the steerable conveying device is disposed in the furnace body 400, a tail end of the second conveying section 200 extends out of the furnace body 400, the furnace body 400 includes a first heating section 410 and a second heating section 420, an electric heating assembly 430 is disposed in each of the first heating section 410 and the second heating section 420, a preheating region 411 is disposed at a front end of the first heating section 410, a liftable heat insulation plate 440 is disposed between the first heating section 410 and the second heating section 420, and the heat insulation plate 440 is connected with an expansion link of a push-pull cylinder 450;

the first conveying section 100 and the second conveying section 200 are both provided with a conveying assembly 300, the bottom of the first conveying section 100 is provided with a rotating table 110, the lower side of the rotating table 110 is provided with a fixed table 120, and the conveying device further comprises a rotating mechanism 130 which can enable the rotating table 110 to rotate relative to the fixed table 120.

The first conveying section 100 and the second conveying section 200 are arranged in a split mode, wherein the first conveying section 100 can rotate through the rotating mechanism 130 and can be combined into a whole according to needs, the whole steel plate is conveyed to enter the heating furnace to be heated, and the steel plate can also be partially turned to be used in a split mode, and part of the steel plate is conveyed to enter the furnace body 400 to be heated and curled into a rolling lug, so that the multipurpose of the heating furnace is achieved.

Referring to fig. 5, a rotary slide rail 121 is arranged on the fixed platform 120, a slide groove 111 matched with the rotary slide rail 121 is arranged on the lower side of the rotary platform 110, the rotating mechanism 130 comprises a driving cylinder 131 arranged on the fixed platform 120, a telescopic rod of the driving cylinder 131 is connected with a rack 132, and the rack 132 is meshed with a gear 133 fixed on the rotary platform 110; the rotary slide rail 121 is arranged on the fixed platform 120 in a semicircular shape, the rotary platform 110 is matched with the rotary slide rail 121 through the sliding chute 111 to realize the rotation with the fixed platform 120, in order to realize the rotation, a rotating mechanism 130 is configured, a telescopic rod of the driving cylinder 131 extends out through a driving cylinder 131 fixed on the fixed platform 120 to drive a rack 132 to move towards one direction, the rack 132 is meshed with a gear 133 to drive the gear 133 to rotate, the gear 133 is fixedly connected with the rotary platform 110 to drive the rotary platform 110 to rotate relative to the fixed platform 120, and the combination or the split of the first transmission section 100 and the second transmission section 200 is realized; the first frame body 140 is fixedly connected with the rotating table 110, so that the first conveying section 100 is fixed to the rotating table 110, and the conveying assembly 300 is used for conveying a steel plate to be heated for manufacturing a plate spring and enters the furnace body 400 for heating.

Referring to fig. 6, the conveying assembly 300 includes a plurality of first driven sprockets 310 disposed on the cross beam 220 of the first and second conveying racks, and a first driving sprocket 320 disposed at an outer end of the cross beam 220, the first driving sprocket 320 being driven by a motor, the first driving sprocket 320 and the first driven sprocket 310 engaging with a chain type conveyor belt 330.

The chain conveyor belt 330 includes two first chains 331 engaged with the first driving sprocket 320 and the first driven sprocket 310, a plurality of rotating shafts 332 disposed between the two first chains 331, a segmented high temperature resistant conveying mesh plate 333 disposed between the rotating shafts 332, and a push plate 334 disposed on a single rotating shaft 332.

The chain type conveyor belt 330 with the structure has high temperature resistance, can convey a steel plate to enter the furnace body 400 for heating, and the push plate 334 plays a role in pushing the steel plate so that the steel plate does not slide on the conveyor belt.

Referring to fig. 7, in the present embodiment, the engaging device 600: the bending machine is arranged between a heating furnace and a bending forming machine and comprises a heat-insulating cover body 610, a transferring slide rail 620 is arranged on the inner wall of the heat-insulating cover body 610, a transferring block 630 is arranged on the transferring slide rail 620, an electromagnet 640 is arranged at the lower end of the transferring block 630, and one side of the transferring block 630 is connected with a telescopic rod of a transferring cylinder 650;

the feeding, cutting and drilling device 550 cuts a raw steel plate into steel plates with certain lengths and various lengths for manufacturing a plate spring, and drills holes in the center of the steel plates, and then the steel plates are transported to the transporting device 2000 of the heating furnace, the heating furnace heats each steel plate to be bent, the end part of each steel plate can be heated through the first heating section 410, then the end part of each steel plate is rolled by the ear rolling machine 700, the steel plates are integrally heated, when the heating is started, the steel plates are preheated first, the performance of the steel plates is guaranteed not to be damaged by direct heating, the heated steel plates are sent to the bending forming machine through the connecting device 600 for bending forming, the equipment set can simultaneously process a plurality of steel plates forming one plate spring, the production efficiency is improved, the electromagnet 640 of the connecting device 600 is intermittently electrified, after the tail end of the furnace body 400 is electrified to adsorb the steel plates, the transfer cylinder 650 pushes the transfer block 630 to advance to the transporting device 2000 of the bending forming machine, the steel plates are put down and bent to be formed, then the centering and hoisting device 800 is used for centering each bent steel plate, the centering device centers the workbench 810, a bottom plate 811 is arranged on the centering workbench 810, a centering rod 812 is arranged on the bottom plate 811, after the centering rod 812 penetrates through a center hole of the steel plate to realize centering, the hoisting device hoists a group of steel plates to enter the quenching device 4000 for quenching, the hoisting device can adopt a mechanical arm 820, a guide plate 4200 is arranged on the upper portion of a quenching liquid box 4100, a turbulence structure 4300 is arranged on the lower portion of the quenching liquid box 4100, hot quenching liquid is dispersed to the side of the box under the action of the guide plate 4200, the quenching liquid with lower temperature at the bottom is used for supplementing the vacant quenching liquid, and the turbulence structure 4300 is arranged, so that the steel plates can be better quenched.

Referring to fig. 8, the bending machine includes a machine body 1000, a conveying device 2000 is disposed on the machine body 1000, the conveying device 2000 penetrates through the middle lower portion of the machine body 1000, a bending device 3000 is mounted on the machine body 1000 above the conveying device 2000, the bending device 3000 includes a movable mold assembly 3100 and a press mold assembly 3200 which are matched with each other, and a support assembly 3300 which supports the movable mold assembly 3100.

The steel plate to be bent is conveyed into the machine body 1000 through the conveying device 2000, at the moment, the movable die assembly 3100 descends, the conveying device 2000 continues to drive the steel plate to move forwards, the steel plate is in the upper initial state of the conveying device 2000, one end of the moving die assembly 3100 entering the machine body 1000 inclines upwards to be vertical at the later stage, the moving die assembly 3100 begins to descend when the moving die assembly 3100 is conveyed to a position right below the moving die assembly 3100, under the blocking action of each movable mold and the continuous conveying action of the conveying device 2000, the steel plate is gradually in a vertical state, while support assembly 3300 is lowered to support movable die assembly 3100, as die assembly 3200 is lowered, the hydraulic cylinder 3207 drives the pressing die to push the steel plate to the movable die, so that the steel plate is gradually bent and formed, the conveyor 2000 is temporarily stopped, and after the bending is completed, the conveyor continues to run, and conveys out the bent steel plate while bringing the next set of steel plates into the machine body 1000.

The conveying device 2000 at least comprises two groups of second driving sprockets 2100 and second driven sprockets 2200, the second driving sprockets 2100 are driven by a stepping motor, second chains 2300 are arranged on the second driving sprockets 2100 and the second driven sprockets 2200, a conveyor belt 2400 is arranged between the two second chains 2300, and a plurality of groups of inclined steel plate supporting plate groups 2500 are arranged on the conveyor belt 2400; each set of diagonal steel support plate set 2500 includes a first diagonal support plate 2510 and a second diagonal support plate 2520, and the first diagonal support plate 2510 located in the machine body 1000 has a higher height than the second diagonal support plate 2520.

Second drive sprocket 2100 is driven by step motor and is rotated to drive second driven sprocket 2200 and rotate, drive conveyer belt 2400 and rotate, wherein conveyer belt 2400 has high temperature resistance, and steel sheet bearing diagonal group 2500 makes the steel sheet be in the device of slope on conveyer belt 2400, and the later stage of being convenient for is bent the steel sheet is vertical. A first inclined support plate 2510 is provided near the steel plate entering the machine body 1000, a second inclined support plate 2520 is provided behind the first inclined support plate 2510, and the first inclined support plate 2510 is higher than the second inclined support plate 2520 in order to incline the steel plate and the end that enters the machine body 1000 first is higher than the end that enters the machine body 1000 later.

Referring to fig. 10, a concentrated installation plate girder 1100 is provided on the top of a machine body 1000, and a movable mold assembly 3100, a press mold assembly 3200, and a support assembly 3300 are installed on the concentrated installation plate girder 1100. Collectively mounting plate beams 1100 are used to mount moving die assembly 3100, die assembly 3200, and support assembly 3300, improving the integrity of the apparatus.

The movable mold assembly 3100 includes a first movable mold 3101, a second movable mold 3102, a third movable mold 3103, a fourth movable mold 3104 and a fifth movable mold 3105, both ends of the first movable mold 3101, the second movable mold 3102, the third movable mold 3103, the fourth movable mold 3104 and the fifth movable mold 3105 are connected to the expansion and contraction rods of the first driving cylinder group 3106, the second driving cylinder group 3107, the third driving cylinder group 3108, the fourth driving cylinder group 3109 and the fifth driving cylinder group 3110, respectively, and the first driving cylinder group 3106, the second driving cylinder group 3107, the third driving cylinder group 3108, the fourth driving cylinder group 3109 and the fifth driving cylinder group 3110 are fixed to the collective mounting plate beam 1100 in a trapezoidal shape from front to rear. According to the quantity that the single steel sheet quantity of every shaping leaf spring set up the movable mould, this technical scheme is used for making five board-like leaf springs, and every drives actuating cylinder 131 group and includes two cylinders for promote or reduce a movable mould, the movable mould has the size to distinguish, can be gradually big by left side to right side, bends little steel sheet to big steel sheet of leaf spring in proper order.

Referring to fig. 11, the die assembly 3200 includes a first die head 3201, a second die head 3202, a third die head 3203, a fourth die head 3204 and a fifth die head 3205 which are engaged with respective moving dies of the moving die assembly 3100, the first die head 3201, the second die head 3202, the third die head 3203, the fourth die head 3204 and the fifth die head 3205 are all mounted on a die rod 3206, the die rod 3206 is connected with a telescopic rod of a hydraulic cylinder 3207, and the hydraulic cylinder 3207 is mounted between the collective mounting plate beam 1100 and the machine body 1000 slidably up and down by a lifting cylinder 3209. The die heads are matched with the moving die, and the purpose of the die heads is to bend a single steel plate.

Referring to fig. 12, support assembly 3300 includes first support plate 3301, second support plate 3302, third support plate 3303, fourth support plate 3304 and fifth support plate 3305 that support each movable die correspondence of movable die assembly 3100, and first support plate 3301, second support plate 3302, third support plate 3303, fourth support plate 3304 and fifth support plate 3305 are all fixed on support mast 3306, and the telescopic link of mast lift cylinder 3307 is connected to the both ends of support mast 3306, and mast lift cylinder 3307 is fixed at the both ends of concentrated installation plate beam 1100. Above-mentioned each backup pad and movable mould one-to-one, aim at, when crooked to the steel sheet, provide a holding power to the movable mould, prevent that the effort from only acting on the telescopic link that drives actuating cylinder 131 group, cause the harm to the telescopic link.

The outer side of the centralized mounting plate beam 1100 and the inner side of the machine body 1000 are both provided with lifting slide rails 3208, and the shell of the hydraulic cylinder 3207 is provided with a sliding groove 111 matched with the two lifting slide rails 3208.

The hydraulic cylinder 3207 can be lifted and lowered to conveniently vacate space and vertically bend and form the steel plate.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims

1. A plate spring production line comprises a feeding, cutting and drilling device (500), a lug rolling machine (700), a centering and hoisting device (800) and a testing device (900), and is characterized by also comprising a heating furnace, a bending forming machine and a quenching device (4000);

-said feeding, blanking and drilling device (500): the tower crane comprises a tower crane (510), a walking structure (520) is arranged on the tower crane (510), a material sucking electromagnet (530) is arranged on the lower portion of the walking structure (520), the tower crane further comprises a cutting device (540) for cutting a steel plate at a fixed length and a drilling device (550) for drilling the center of the cut plate, and the steel plate is conveyed to the material cutting and drilling device (550) by the material sucking electromagnet (530); the heating furnace comprises a furnace body (400) and a turnable conveying device, wherein the turnable conveying device comprises a first conveying section (100) and a second conveying section (200), the rear half section of the first conveying section (100) is arranged on the front side in the furnace body (400), the second conveying section (200) of the turnable conveying device is arranged in the furnace body (400), the tail end of the second conveying section (200) extends out of the furnace body (400), the furnace body (400) comprises a first heating section (410) and a second heating section (420), electric heating assemblies (430) are arranged in the first heating section (410) and the second heating section (420), a preheating area (411) is arranged at the front end of the first heating section (410), and a lifting heat insulation plate (440) is arranged between the first heating section (410) and the second heating section (420);

the bending forming machine comprises: the bending device comprises a machine body (1000), wherein a conveying device (2000) is arranged on the machine body (1000), the conveying device (2000) penetrates through the middle lower part of the machine body (1000), a bending device (3000) is installed on the machine body (1000) on the upper part of the conveying device (2000), the bending device (3000) comprises a movable die assembly (3100) and a pressing die assembly (3200) which are matched with each other, and the bending device further comprises a supporting assembly (3300) for supporting the movable die assembly (3100);

engagement device (600): the bending machine is arranged between a heating furnace and a bending forming machine and comprises a heat-insulating cover body (610), wherein a transferring slide rail (620) is arranged on the inner wall of the heat-insulating cover body (610), a transferring block (630) is arranged on the transferring slide rail (620), an electromagnet (640) is arranged at the lower end of the transferring block (630), and one side of the transferring block (630) is connected with a telescopic rod of a transferring cylinder (650);

the quenching device (4000) is arranged at the lower side of the lifting device and comprises a quenching liquid box body (4100), a guide plate (4200) is arranged at the upper part of the quenching liquid box body (4100), and a turbulent flow structure (4300) is arranged at the lower part of the quenching liquid box body (4100).

2. The plate spring production line according to claim 1, characterized in that the first conveying section (100) and the second conveying section (200) are respectively provided with a conveying assembly (300), the bottom of the first conveying section (100) is provided with a rotating table (110), the lower side of the rotating table (110) is provided with a fixed table (120), and the plate spring production line further comprises a rotating mechanism (130) capable of enabling the rotating table (110) to rotate relative to the fixed table (120).

3. The plate spring production line according to claim 2, characterized in that a rotary slide rail (121) is arranged on the fixed platform (120), a slide groove (111) matched with the rotary slide rail (121) is arranged on the lower side of the rotary platform (110), the rotating mechanism (130) comprises a driving cylinder (131) arranged on the fixed platform (120), a telescopic rod of the driving cylinder (131) is connected with a rack (132), and the rack (132) is meshed with a gear (133) fixed on the rotary platform (110);

the conveying assembly (300) comprises a plurality of first driven sprockets (310) arranged on a cross beam (220) of the first conveying frame and the second conveying frame and a first driving sprocket (320) arranged at the outer end of the cross beam (220), the first driving sprocket (320) is driven by a motor, and a chain type conveying belt (330) is meshed on the first driving sprocket (320) and the first driven sprocket (310).

4. The leaf spring production line of claim 3, characterized in that the chain conveyor (330) comprises two first chains (331) engaged with the first driving sprocket (320) and the first driven sprocket (310), a plurality of rotating shafts (332) are arranged between the two first chains (331), a segmented high temperature resistant conveying mesh plate (333) is arranged between the rotating shafts (332), and a push plate (334) is arranged on a single rotating shaft (332).

5. The plate spring production line according to claim 1, wherein the conveying device (2000) at least comprises two groups of second driving chain wheels (2100) and second driven chain wheels (2200), the second driving chain wheels (2100) are driven by stepping motors, second chains (2300) are arranged on the second driving chain wheels (2100) and the second driven chain wheels (2200), a conveyor belt (2400) is arranged between the two second chains (2300), and a plurality of groups of inclined steel plate supporting plate groups (2500) are arranged on the conveyor belt (2400); each group of the steel plate inclined support plate group (2500) comprises a first inclined support plate (2510) and a second inclined support plate (2520), and the height of the first inclined support plate (2510) in the machine body (1000) is higher than that of the second inclined support plate (2520).

6. The plate spring production line of claim 1, wherein the top of the machine body (1000) is provided with a centralized installation plate beam (1100), and the movable die assembly (3100), the press die assembly (3200) and the support assembly (3300) are all installed on the centralized installation plate beam (1100);

the movable mold assembly (3100) comprises a first movable mold (3101), a second movable mold (3102), a third movable mold (3103), a fourth movable mold (3104) and a fifth movable mold (3105), wherein two ends of the first movable mold (3101), the second movable mold (3102), the third movable mold (3103), the fourth movable mold (3104) and the fifth movable mold (3105) are respectively connected with telescopic rods of a first driving cylinder group (3106), a second driving cylinder group (3107), a third driving cylinder group (3108), a fourth driving cylinder group (3109) and a fifth driving cylinder group (3110), and the first driving cylinder group (3106), the second driving cylinder group (3107), the third driving cylinder group (3108), the fourth driving cylinder group (3109) and the fifth driving cylinder group (3110) are fixed on the centralized mounting plate beam (1100) in a trapezoidal shape from front to back;

the die pressing assembly (3200) comprises a first die pressing head (3201), a second die pressing head (3202), a third die pressing head (3203), a fourth die pressing head (3204) and a fifth die pressing head (3205) which are matched with all moving dies of the moving die assembly (3100), the first die pressing head (3201), the second die pressing head (3202), the third die pressing head (3203), the fourth die pressing head (3204) and the fifth die pressing head (3205) are all arranged on a die pressing rod (3206), the die pressing rod (3206) is connected with a telescopic rod of a hydraulic cylinder (3207), and the hydraulic cylinder (3207) can be arranged between the centralized mounting plate beam (1100) and the machine body (1000) in a vertically sliding mode through a lifting cylinder (3209);

support assembly (3300) include to each movable mould correspondence of movable mould subassembly (3100) carry out the first backup pad (3301), second backup pad (3302), third backup pad (3303), fourth backup pad (3304) and fifth backup pad (3305) that support, first backup pad (3301), second backup pad (3302), third backup pad (3303), fourth backup pad (3304) and fifth backup pad (3305) all fix on supporting total pole (3306), the telescopic link of total pole lift cylinder (3307) is connected at the both ends of supporting total pole (3306), total pole lift cylinder (3307) are fixed at the both ends of concentrating installation plate beam (1100).

7. The plate spring production line according to claim 6, characterized in that the outer side of the centralized installation plate beam (1100) and the inner side of the machine body (1000) are provided with lifting slide rails (3208), and the housing of the hydraulic cylinder (3207) is provided with a chute (111) which is matched with the two lifting slide rails (3208).

8. The leaf spring production line according to claim 1, characterized in that the deflector (4200) is a circular arc shaped plate with its arc directed towards the inside of the quench liquid tank (4100).

9. The plate spring production line of claim 1, wherein the spoiler structure (4300) comprises a spoiler bar (4301) and a spoiler (4302) provided on the spoiler bar (4301).