CN211994148U - Efficient hollow extrusion bottle blowing machine - Google Patents

Abstract

The utility model relates to a high-efficient cavity extrusion bottle blowing machine. The existing bottle blowing machine has the problem of low processing efficiency. The utility model discloses a frame, crowded material mechanism and bottle blowing mechanism, crowded material mechanism down-conveying pipe blank, bottle blowing mechanism include at least two sets of mould subassemblies, and the mould subassembly is dodged through the die sinking and is formed the blowing passageway of putting with the coaxial vertical of pipe blank and upwards lifting, closes the mould again and receives pipe blank and blow when passing through the blowing passageway downwards and form the bottle. Make things convenient for mould subassembly to receive the pipe blank in turn and blow into the bottle through setting up the blowing passageway, existing effect utilizes vertical space to increase mould subassembly quantity, improves machining efficiency, reduction in production cost still effectively reduces bottle blowing machine area, makes things convenient for the assembly transportation.

Description

Efficient hollow extrusion bottle blowing machine

Technical Field

The utility model relates to a plastics processing field, concretely relates to bottle blowing machine.

Background

The existing bottle blowing machine comprises a rack, and an extruding mechanism and a bottle blowing mechanism which are arranged on the rack, wherein the extruding mechanism is arranged above the bottle blowing mechanism, and the extruding mechanism downwards conveys a pipe blank which is blown into a bottle body by the bottle blowing mechanism.

When the extrusion mechanism is used, firstly, the granular materials in the hopper are pushed by the charging barrel screw to enter the heating part for softening and then pass through the die head part, and the pipe blanks are formed and conveyed downwards through the discharge port; then, the die assembly transversely moves to the lower part of the discharge port, and receives the suspended pipe blank through die assembly; then, the mould assembly transversely moves back to the lower part of the bottle blowing assembly and is matched with the bottle blowing assembly to finish bottle blowing; and finally, opening the mold assembly to enable the blow-molded bottle body to fall. The two groups of bottle blowing mechanisms are respectively arranged at two sides of the extruding mechanism, and the two groups of bottle blowing mechanisms alternately receive pipe blanks hung below the discharge port so as to improve the processing efficiency.

However, the bottle blowing machine with the structure has the following defects: 1. the two groups of mould assemblies realize the operation of avoiding blowing and receiving the pipe blank alternately in an integral transverse moving mode, the moving distance of the mould assemblies is increased, the time required by single processing is prolonged due to the fact that blowing operation cannot be carried out in the transverse moving process, the processing efficiency is influenced, and the occupied area of a bottle blowing machine is increased;

2. the bottle blowing assembly comprises a mold cavity and a blowing rod which can vertically lift and can be inserted into the mold cavity, the bottle blowing assembly has higher requirement on vertical space, the peripheral space of the extrusion mechanism is limited, the installation quantity of the mold assembly is limited, raw material waste can be caused because pipe blanks produced by the extrusion mechanism cannot be used in time, more waste materials are generated, the processing cost is increased, and the processing efficiency of the bottle blowing machine is reduced because the number of the mold cavities is small;

3. when mould subassembly compound die centre gripping pipe blank hypomere and transversely move back, need realize separating between pipe blank hypomere and upper segment through the blade of horizontal cutting, still need crowded material mechanism cooperation upwards to lift and prevent that pipe blank from piling up, lead to pipe blank upper segment to take place to rock after being cut, both can make pipe blank take place the unable condition of matcing the laminating with the die cavity wall because of radial cross section profile deformation, and then influence bottle blowing quality, still need set up the lifting subassembly and increase equipment manufacturing cost for crowded material mechanism.

SUMMERY OF THE UTILITY MODEL

In order to solve the not enough of prior art, the utility model provides a high-efficient cavity extrusion bottle blowing machine makes things convenient for mould subassembly to receive the pipe blank in turn and blow into the bottle through setting up the blowing passageway, and existing effect utilizes vertical space to increase mould subassembly quantity, improves machining efficiency, effectively reduces bottle blowing machine area in addition, convenient assembly transportation.

The utility model discloses a following mode realizes: a high-efficiency hollow extrusion bottle blowing machine comprises a rack, and an extrusion mechanism and a bottle blowing mechanism which are arranged on the rack, wherein the extrusion mechanism is arranged above the bottle blowing mechanism, the extrusion mechanism conveys downwards a pipe blank which is blown into a bottle body by the bottle blowing mechanism, the bottle blowing mechanism comprises at least two groups of mold assemblies which are circularly lifted in an avoiding mode, the mold assemblies are avoided through mold opening to form a blowing channel which is coaxial and vertically arranged with the pipe blank and are lifted upwards, and then a mold is closed to receive the pipe blank and blow the pipe blank to form the bottle body when the pipe blank passes through the blowing channel downwards. The mould assembly forms a bottle blowing channel through mould opening, so that the mould assembly can be changed from original horizontal movement alternative material receiving to vertical alternative material receiving, the mould assembly in a mould closing state moves downwards along a blowing channel and performs blowing operation immediately after receiving a pipe blank, the time required by single blowing operation is effectively shortened, the processing efficiency is improved by increasing the processing times in unit time, a plurality of groups of circularly lifting mould assemblies can be accommodated by utilizing the blowing channel vertically arranged below the extruding mechanism, the consumption of the pipe blank in unit time is increased by increasing the number of the mould assemblies for circular use, the processing efficiency is further improved, the occupied area of the bottle blowing machine is reduced by vertically misplacing and overlapping the extruding mechanism and the bottle blowing mechanism, and the installation and use are convenient.

Preferably, the mold assembly comprises a mold clamp and an opening and closing driving piece for driving the mold frame to open and close, the mold clamp comprises two mold plates hinged through a rotating shaft, and the opening and closing driving piece drives the mold plates to synchronously open and close left and right by taking the rotating shaft as a center, so that the mold clamp is switched between an open mold state for forming a blowing channel and a mold closing state for receiving a pipe blank and blowing the pipe blank into a bottle. The mold clamp is driven by the opening and closing driving piece to switch between an opening state and a closing state, when the mold clamp is in the opening state, the opening and closing end of the template is separated and forms a blowing channel for the mold clamp in the closing state to move downwards, so that the mold clamp can move upwards and timely receive the tube blank, and the mold clamp can move downwards along the blowing channel to vacate a space for receiving the tube blank for a subsequent mold clamp when blowing a bottle body, and accordingly, multiple groups of mold assemblies can circularly and alternately receive the tube blank and blow the tube blank into the bottle. The two templates are synchronously opened and closed left and right under the driving of the opening and closing driving piece, so that the distance between the templates and the axis of the tube blank is ensured to be the same, and the condition that the ascending templates and the descending mold clamps are impacted and interfered is prevented.

Preferably, the mold assembly comprises at least two mold clamps which are arranged in a height staggered mode and lift synchronously, and the vertical projections of the mold clamps are overlapped with each other, so that a vertically through blowing channel is formed when the mold clamps are in a mold opening state. Each group of mould components comprises a plurality of mould clamps, each mould clamp is internally provided with a mould cavity, and the quantity of the mould components for receiving the tube blank at a single time is increased by increasing the quantity of the mould clamps, so that a plurality of bottles can be simultaneously processed by a single group of mould components, and the processing efficiency is effectively improved. When the extrusion die is used, the extrusion mechanism can form all die clamps meeting the same die assembly in the time interval of taking materials of the adjacent die assemblies and simultaneously receive the required tube blank amount, and the machining efficiency is improved by improving the consumption of tube blanks. When the mould subassembly carries out vertical lift, its vertical projection is located the normal position all the time for relative position between each mould subassembly is fixed, and each mould subassembly opens and shuts through the time error and realize the dislocation lift, and equipment structure is simplified to existing effect, and still convenient control reduces transmission trouble, is convenient for maintain the maintenance, promotes transmission stability.

Preferably, the mold clamps in the same set of mold assemblies are opened and closed left and right synchronously. The time required for completing single bottle blowing of the single group of mould components is shortened by opening and closing the mould clamps synchronously at the left and right sides, and further the processing efficiency is improved.

Preferably, the mold clamps in the mold assemblies in the same group are sequentially opened from bottom to top, so that the mold clamps sequentially release the blown bottle from bottom to top, the bottle is prevented from being blocked or changed in direction by impact due to the obstruction of the lower mold clamp, and the bottle is ensured to be collected smoothly.

Preferably, the die clamps in the die assemblies in the same group are sequentially closed from bottom to top, and the die clamps are sequentially closed from bottom to top to receive the pipe blank, so that the condition that the pipe blank cannot be attached to the wall surface of the die cavity due to local compression deformation is effectively prevented, and the qualification rate of finished products is ensured.

Preferably, the mold clamp forms a cavity by clamping the mold, the top of the cavity forms an auxiliary processing part, the mold clamp is provided with a gas needle which can be laterally inserted into the cavity, and after the mold clamp is clamped, the tube blank is blown into a bottle body by the gas needle which is inserted from outside to inside. The die cavity plays the effect of inflation design to the pipe blank, ensures that the bottle has preset profile. The top of the die cavity is provided with an auxiliary processing part for the air needle to penetrate, so that the air needle can be conveniently inserted into the tube blank and smoothly blown into a bottle, a through hole formed by inserting the air needle can be eliminated by cutting the auxiliary processing part after blowing is finished, and the surface of the bottle body is ensured to be flat and meet the preset contour requirement. The air needle inserts from the side of die cavity, need not to occupy die cavity top space, has both made things convenient for setting up a plurality of mould clamps in same mould subassembly, for addding the mould clamp and providing installation space, promotes machining efficiency, still reduces bottle blowing machine's area through the crowded material mechanism below space of rational utilization, promotes the convenience of use.

Preferably, the top of the die clamp is provided with a blade, and the blade horizontally cuts the tube blank so as to separate the bottle body from the upper tube blank. The blade sets up at the top of die holder and can carry out the level to the cutting for the separation of bottle and supplementary processing portion has both ensured that the bottle profile accords with and predetermines the requirement, still prevents through change cutting opportunity that the pipe blank bottom from taking place to rock the condition of warping, effectively promotes the processing qualification rate. Furthermore, the blades may also be used to cut the tube blank such that the tube blank is cut to form sections that mate with corresponding die clamps. The blade sets up on the mould presss from both sides for the incision of blade is shorter with the distance between the bottle, and then effective control waste material volume reduces the material cost through promoting raw materials utilization efficiency.

Preferably, the mold clamp is provided with a demolding part, and the demolding part is a mandril capable of extending into the mold cavity or an air blowing opening communicated with the mold cavity. When the mold clamp finishes blowing and opens the mold, the demolding part is used for assisting the bottle to be separated from the mold clamp, the bottle is ensured to smoothly fall into a preset bottle containing area, the smoothness of a bottle blowing channel is effectively ensured, the situation that the bottle is clamped and deformed by the mold clamp which is lifted in opposite directions due to the adhesion with the wall surface of the mold cavity is prevented, and the qualified rate of the bottle is ensured.

Preferably, the extruding mechanism comprises a discharge port which is arranged downwards, the discharge port and the blowing channel are coaxially arranged, and the descending speed of the die assembly is matched with the discharging speed of the discharge port synchronously, so that the wall thickness of the bottom end of the pipe blank is kept constant after the bottom end of the pipe blank is clamped by the die assembly. The discharge gate is seted up downwards, ensures that the raw materials can utilize self gravity to hang and form the vertical pipe blank of putting and hollow middle part of axis after softening, controls the wall thickness of pipe blank through adjusting the discharge gate size, guarantees through the relation between the discharge speed of the descending velocity of control die assembly and discharge gate that the wall thickness of pipe blank keeps invariable, and then ensures the blowing qualification rate of bottle. In addition, by setting the descending speed of the die assembly and the discharging speed of the discharging port, a lifting assembly is not required to be specially configured for the extruding mechanism, the extruding mechanism is effectively simplified, the assembly and the control are convenient, and the production cost is reduced.

The mould subassembly provides the hang space for the pipe blank of follow-up output through descending downwards, and when the falling speed of mould subassembly was faster than the ejection of compact speed of discharge gate, the pipe blank can take place the condition of wall attenuation or even disconnection because of the bottom is dragged downwards, and when the falling speed of mould subassembly was slower than the ejection of compact speed of discharge gate, the pipe blank can be because of can't provide hang space and take place accumulational condition between mould subassembly and discharge gate, leads to pipe blank wall limit thick. The wall thickness variation of the pipe blank can affect the bottle blowing quality and the processing qualification rate.

Preferably, any one set of die assembly is arranged in a staggered mode when in the film opening state and the vertical projection when the rest sets of die assemblies are in the film closing state. Any group of mould subassembly can be in the mould opening state with the mould subassembly vertical crisscross lift that is in the compound die state of others, ensures that the mould subassembly moves according to the preface to blowing passageway top receiving tube blank, and then promotes machining efficiency. When the plurality of groups of mould assemblies are in the mould opening state, the condition of impact interference can not occur due to the height difference.

Preferably, the bottle blowing mechanism comprises two groups of mold assemblies which are respectively arranged at two sides of the bottle blowing channel, and vertical projections of the two groups of mold assemblies in the mold opening state and the mold closing state are arranged in a staggered mode, so that the mold assembly in the mold closing state descending and the mold assembly in the mold opening state ascending are staggered and avoided. The mould subassembly is two sets of and the branch is put in blowing passageway both sides, and the pivot axis of mould clamp and the axis of discharge gate all are located same vertical plane, and have great interval between two sets of mould subassembly's pivot for the end that opens and shuts of one side mould clamp only need open less angle and just can satisfy opposite side mould clamp mould decline, has both reduced the raw materials cost through simplifying bottle blowing mechanism, still makes things convenient for the mould clamp to switch between die sinking state and compound die state fast accurately, ensures the operational reliability.

Preferably, the bottle blowing mechanism comprises lifting driving assemblies corresponding to the mold assemblies one by one, each lifting driving assembly comprises a vertically arranged guide rod, a supporting platform capable of vertically lifting along the guide rod and a driving part driving the supporting platform to lift, and the driving part drives the mold assemblies to lift along the guide rods through the supporting platforms. The lifting driving component is used for controlling the corresponding mould component to reciprocate and carry out the operation of receiving the pipe blank, the operation of blowing the pipe blank and the operation of avoiding the mould clamp in a mould closing state. The guide rods are arranged in parallel, so that the vertical guide effect on the bearing platform is achieved, the bearing platform is ensured to be always kept in a horizontal posture, and the die assembly is ensured to accurately lift in a preset posture.

Preferably, the driving part comprises a screw nut arranged in the middle of the supporting platform, a vertically arranged screw lever and a motor fixedly connected to the rack, and the motor drives the screw lever to rotate and drives the supporting platform to lift through the screw nut in threaded connection. The screw rod structure is used for driving the bearing platform to ascend and descend, so that driving stability is effectively improved, the ascending and descending speed is conveniently controlled, the descending speed of the bearing platform is ensured to be matched with the discharging speed of the discharging port, and the blowing quality is improved. The screw lever is rotationally and fixedly connected to the rack and plays a role in stably supporting the bearing platform.

Preferably, the lifting driving assembly comprises a counterweight part, the counterweight part comprises a fixed pulley arranged at the top of the guide rod, a counterweight part matched with the weight of the die assembly and a steel wire rope bridged between the bearing platform and the counterweight part, the middle section of the steel wire is lapped on the fixed pulley, two ends of the steel wire droop and are respectively fixedly connected with the bearing platform and the counterweight part, the counterweight part is arranged to reduce the working load of the driving part, and the driving stability is further improved.

The utility model discloses an outstanding beneficial effect: the mould assembly forms a bottle blowing channel by opening the mould, so that the mould assembly can be changed from original transverse movement alternative material receiving to vertical alternative material receiving, the time required by single blowing operation is effectively shortened, the processing efficiency is improved by increasing the processing times in unit time, a plurality of groups of circularly lifting mould assemblies can be accommodated by the blowing channel vertically arranged below the material extruding mechanism, the consumption of the inner pipe blank in unit time is increased by increasing the number of the mould assemblies which can be circularly used, the processing efficiency is further improved, the occupied area of the bottle blowing machine is reduced by the way of vertically staggered overlapping of the material extruding mechanism and the bottle blowing mechanism, and the bottle blowing machine is convenient to install and use; the air needle is inserted from the side of the mold cavity, so that the space above the mold cavity is not occupied, a plurality of mold clamps are conveniently arranged in the same mold assembly, an installation space is provided for adding the mold clamps, the processing efficiency is improved, the occupied area of the bottle blowing machine is reduced by reasonably utilizing the space below the material extruding mechanism, and the use convenience is improved; the condition that the bottom end of the pipe blank is prevented from shaking and deforming is prevented by changing the cutting time, and the processing qualified rate is effectively improved.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic top view of the mold assembly in open and closed positions, respectively;

FIG. 3 is a schematic view of an assembled structure of a mold assembly and a corresponding lift drive assembly;

FIG. 4 is a schematic view of a mold clamp configuration;

in the figure: 1. the device comprises a rack, 2, an extruding mechanism, 3, a bottle blowing mechanism, 4, a pipe blank, 5, a mold clamp, 6, a rotating shaft, 7, a template, 8, an opening and closing driving piece, 9, a gas needle, 10, a blade, 11, a demolding piece, 12, a discharge hole, 13, a guide rod, 14, a supporting platform, 15, a lead screw nut, 16, a screw rod, 17, a fixed pulley, 18, a steel wire rope, 19 and a counterweight piece.

Detailed Description

The essential features of the invention will be further explained below with reference to the drawings and the detailed description of the invention.

The efficient hollow extrusion bottle blowing machine shown in fig. 1 comprises a rack 1, and an extrusion mechanism 2 and a bottle blowing mechanism 3 which are mounted on the rack 1, wherein the extrusion mechanism 2 is arranged above the bottle blowing mechanism 3, the extrusion mechanism 2 conveys a tube blank 4 for blowing the bottle blowing mechanism 3 into a bottle body downwards, the bottle blowing mechanism 3 comprises at least two groups of mold assemblies which are circularly lifted in an avoiding mode, the mold assemblies are opened and avoided to form a blowing channel which is coaxial and vertical with the tube blank 4 and is lifted upwards, and then the mold assemblies are closed to receive the tube blank 4 and blow the tube blank to form the bottle body when the tube blank passes through the blowing channel downwards.

In actual operation, the extruding mechanism 2 is arranged above the bottle blowing mechanism 3, and the rack plays a role in supporting, positioning and extruding the extruding mechanism 2 and the bottle blowing mechanism 3. The extrusion mechanism 2 produces a tube blank 4 suspended downwards, and the bottle blowing mechanism 3 receives the tube blank 4 and blows the tube blank into a bottle body, so that the bottle body meeting the preset contour requirement is formed.

In actual operation, the extruding mechanism 2 includes a hopper, a heating portion with a built-in material barrel screw, and a die head portion with a discharge port 12, the heating portion is a heating pipe, the material barrel screw is inserted into the heating pipe, a feeding end of the heating pipe is communicated with the bottom of the hopper, and the other end of the heating pipe is communicated with the die head portion. The bottom surface of the die head is provided with an annular discharge hole 12. When the device is used, the charging barrel screw rod rotates under the action of the motor and receives the granular materials from the hopper, the granular materials are heated and melted in the heating pipe to form a plastic liquid raw material with a contour, and the liquid raw material is extruded by the charging barrel screw rod and then passes through the die head to form the annular pipe blank 4 suspended downwards.

In practical operation, the bottle blowing mechanism 3 comprises at least two groups of mold assemblies which are circularly lifted in an avoiding mode, the mold assemblies are opened and avoided to form a blowing channel which is coaxial and vertically arranged with the pipe blank 4 and are lifted upwards, then the mold assemblies are closed to receive the pipe blank 4 and blow the pipe blank to form a bottle body when the pipe blank passes through the blowing channel downwards. The consumption speed of the riser blank 4 is increased by increasing the number of the Archie die components, and the processing efficiency is further improved. When setting up multiunit mould subassembly, only need satisfy when any group mould subassembly is in the state of opening the membrane with the vertical projection dislocation set when each other group mould subassembly is in the compound die state can (as shown in fig. 2), all should regard as the utility model discloses a specific embodiment. Because the die assemblies in the die opening state are in the ascending state and have height difference, the problem that whether the die assemblies in the die opening state have collision interference or not is not required to be considered.

In practical operation, the bottle blowing mechanism 3 includes two sets of mold assemblies respectively disposed at two sides of the bottle blowing channel, and vertical projections of the two sets of mold assemblies respectively in the mold opening state and the mold closing state are arranged in a staggered manner, so that the mold assembly in the mold closing state descending and the mold assembly in the mold opening state ascending are staggered and avoided. Taking the bottle blowing mechanism 3 comprising two sets of mold assemblies as an example, each mold assembly is provided with a mold clamp 5, and the mold clamps 5 in the two mold assemblies are named as a first clamp and a second clamp respectively. At this time, the extrusion mechanism 2 discharges at a constant speed through the discharge port 12 and forms a unit tube blank 4 meeting the required amount of a single mold clamp 5, and the first clamp rises to the top of the blowing channel and is in a mold opening state, so that the blowing operation is realized through the following steps:

firstly, a first clamp is clamped at the top of a blowing channel and is switched from a die opening state to a die closing state, and a die cavity which clamps a corresponding unit tube blank 4 and is isolated from the external space is formed; meanwhile, the second clamp is switched from a mold closing state to a mold opening state after moving to the bottom of the blowing channel, so that the blowing channel is formed in an avoiding manner;

secondly, the first clamp moves downwards under the driving of the lifting driving assembly, the descending speed is the same as the discharging speed of the discharging port 12, a suspension space is provided for the discharging port 12 to output the next unit tube blank 4, meanwhile, the air needle 9 on the first clamp is inserted into an auxiliary processing part of the die cavity under the driving of an air cylinder, and the air needle 9 is pulled out after high-pressure air is conveyed into the corresponding unit tube blank 4, so that the unit tube blank 4 is blown into a bottle body; meanwhile, the second clamp is driven by the lifting driving component to move upwards and effectively avoid the first clamp which descends in a die closing state;

thirdly, the first clamp moves to the bottom of the blowing channel and divides the bottle body and the auxiliary processing part through the corresponding blade 10, the first clamp is switched from a mold closing state to a mold opening state, and the bottle body is separated from the first clamp under the action of a demolding part 11 arranged on the first clamp and falls into a preset bottle body collecting area; meanwhile, the unit part pipe blank 4 is produced below the discharge port 12, and the second clamp moves to the top of the blowing channel and is switched from a die opening state to a die closing state, so that a die cavity which clamps the corresponding unit part pipe blank 4 and is isolated from the external space is formed;

fourthly, the second clamp moves downwards under the driving of the lifting driving assembly, the descending speed is the same as the discharging speed of the discharging port 12, a suspension space is provided for the discharging port 12 to output the next unit tube blank 4, meanwhile, the air needle 9 on the second clamp is inserted into the auxiliary processing part of the die cavity under the driving of the air cylinder, and the air needle 9 is pulled out after high-pressure air is conveyed into the corresponding unit tube blank 4, so that the unit tube blank 4 is blown into a bottle body; meanwhile, the first clamp is driven by the lifting driving component to move upwards, and effectively avoids the second clamp which descends in a die closing state;

fifthly, the unit part tube blank 4 is produced below the discharge port 12, and the first clamp moves to the top of the blowing channel and is switched from a die opening state to a die closing state, so that a die cavity which clamps the corresponding unit part tube blank 4 and is isolated from the external space is formed; meanwhile, the second clamp moves to the bottom of the blowing channel and divides the bottle body and the auxiliary processing part through the corresponding blade 10, the second clamp is switched from a die closing state to a die opening state, and the bottle body is separated from the second clamp under the action of a demoulding part 11 arranged on the second clamp and falls into a preset bottle body collecting area.

And the bottle blowing machine is connected with the first step after the fifth step is finished, so that the work of alternately receiving the unit part pipe blank 4 by the first clamp and the second clamp and blowing the unit part pipe blank into a bottle is realized circularly. In the process, the first clamp and the second clamp realize vertical avoiding lifting through switching between a die opening state and a die closing state, and blow immediately after receiving unit tube batch materials, so that the moving distance of the die assembly is effectively shortened, the time required by blowing the bottle body once is further shortened, the processing efficiency is improved by increasing the bottle blowing processing times in unit time, a plurality of groups of circularly lifting die assemblies can be accommodated by utilizing a blowing channel vertically arranged below the extruding mechanism 2, the consumption of the tube blank 4 in unit time is increased by increasing the number of the die assemblies capable of being circularly used, the processing efficiency is further improved, the occupied area of the bottle blowing machine is reduced in a mode of vertically staggered overlapping the extruding mechanism 2 and the bottle blowing mechanism 3, and the bottle blowing machine is convenient to install and use.

In actual operation, the mould subassembly includes two at least height malposition settings and synchronous lift's mould clamp 5, the vertical projection of mould clamp 5 is each other for the coincidence to form vertical through-going blowing passageway when making mould clamp 5 be in the die sinking state. Since the vertically stacked mold clamps 5 do not put higher demands on the area of the radial cross-sectional profile of the blowing channel, the mold assembly can increase the number of mold cavities for a single simultaneous process by increasing the number of stacked mold clamps 5, thereby increasing the process efficiency by increasing the number of bottles that can be processed at a single time. In this regard, as the number of die holders 5 included in a single set of die assemblies increases, the number of unit tube blanks 4 output from the output port 12 when adjacent die assemblies receive material also increases to meet the requirement of the die assemblies to process multiple bottle bodies at a time. For example, when the mold assembly includes three stacked mold clamps 5, it is said that the mold assembly can be processed through three mold cavities simultaneously, the extrusion mechanism 2 is required to increase the discharge speed and provide three unit tube blanks 4 for the mold assembly, and the descending speed of the mold assembly is also increased along with the discharge speed, so as to provide a suspension space for the subsequent tube blanks 4 and a space for the subsequent mold assembly to close the mold.

In this embodiment, the extruding mechanism 2 includes a discharge port 12 opened downward, the discharge port 12 and the blowing channel are coaxially disposed, and the descending speed of the mold assembly is synchronized with the discharging speed of the discharge port 12, so that the bottom end of the tube blank 4 is held by the mold assembly and the wall thickness is kept constant. In order to ensure that the die assembly and the pipe blank 4 descend synchronously, in the concrete implementation, the die assembly ascends to the top end of the blowing channel and then descends in a die opening state, and the die assembly is carried out after the die assembly has a descending speed matched with the discharging speed, so that the die assembly and the corresponding unit pipe blank 4 are always kept at the same height, and the pipe blank 4 produced subsequently has enough suspension space.

In practical operation, when the mold assembly comprises a plurality of mold clamps 5, the opening and closing timing of the mold clamps 5 in the same group can be achieved in a plurality of ways:

in the first mode, the die clamps 5 in the same die assembly are opened and closed left and right synchronously, so that the time for the die assemblies to receive the tube blank 4 and release the bottle body is effectively shortened, and the time for single bottle blowing operation of the die assemblies is further effectively shortened;

and in the second mode, the die clamps 5 in the same die assembly set are sequentially opened or closed from bottom to top, the influence of synchronous left and right opening and closing dies on the profile and the wall thickness of the pipe blank 4 is reduced by staggered opening and closing of the dies, the unit pipe blank 4 can be matched and attached with the corresponding die cavity, and the processing qualified rate is improved.

In practical operation, the mold assembly includes a mold clamp 5 and an opening and closing driving member 8 for driving the mold frame to open and close, the mold clamp 5 includes two mold plates 7 (as shown in fig. 4) hinged by a rotating shaft 6, and the opening and closing driving member 8 drives the mold plates 7 to open and close synchronously left and right around the rotating shaft 6, so that the mold clamp 5 is switched between an open state for forming a blowing channel and a closed state for receiving the tube blank 4 and blowing into a bottle. The template 7 is in a long plate shape, the connecting end of the template 7 is hinged through the rotating shaft 6, and the opposite surfaces of the opening and closing ends are used for fixedly connecting a die provided with a die cavity. When the mold clamp 5 is in a mold opening state, the opening and closing ends of the mold plate 7 are separated from each other and are avoided to form the blowing channel, and when the mold clamp 5 is in a mold closing state, the opening and closing ends of the mold plate 7 are closed and form a mold cavity isolated from the outside through a mold groove in the mold.

In this embodiment, the opening/closing driving member 8 is a cylinder bridged between the middle sections of the two mold plates 7, the cylinder body and the movable rod of the cylinder are respectively and rotatably connected to the middle sections of the corresponding mold plates 7, and the mold clamp 5 is switched between the mold opening state and the mold closing state by the telescopic movable rod.

In practical operation, the mold clamp 5 forms a mold cavity through mold closing, an auxiliary processing part is formed at the top of the mold cavity, the mold clamp 5 is provided with a gas needle 9 which can be laterally inserted into the mold cavity, and after the mold clamp 5 is closed, the tube blank 4 is blown into a bottle body by the gas needle 9 which is inserted from outside to inside. On the arbitrary mould of the mould clamp 5 that gas needle 9 set up, preferably set up on the mould towards the lateral wall that opens and shuts driving piece 8, both conveniently hide protection gas needle 9, can also reduce trachea laying distance with the driving piece 8 sharing air supply that opens and shuts. The mould is provided with a through hole for the air supply needle 9 to penetrate through.

In practice, the top of the die holder 5 is provided with a blade 10, and the blade 10 cuts the tube blank 4 horizontally to separate the bottle body from the upper tube blank 4. The cutter is fixedly connected to the top of any template 7 of the die clamp 5, and the blade 10 is driven by the corresponding cylinder to translate along a preset path, so that the tube blank 4 is cut. In particular, the height of the blade 10 can be adjusted according to the cutting requirements, and should be regarded as a specific embodiment of the present invention. According to the preferable scheme, the blade 10 can be used for cutting after being clamped and positioned by the die clamp 5 above and below the section to be cut of the pipe blank 4, the pipe blank 4 is effectively prevented from shaking due to no fixation of the part of the pipe blank 4, and the lower port of the pipe blank 4 is further ensured to keep a preset profile.

In practice, the mold clamp 5 is provided with a stripper 11. Because the bottle body can be on one side die cavity at the adhesion of 5 die sinking backs of mould clamp for the bottle needs break away from the die cavity under the assistance of drawing of patterns piece 11, and then ensures that the bottle falls into the predetermined bottle collection region. The stripping member 11 can have various structures:

in the first structure, the demoulding part 11 is an air blowing opening arranged in the middle of a mould cavity, and air flow is blown between the mould cavity and the surface of a bottle body to drive the bottle body to be separated from the mould cavity;

the structure II is that the demoulding component 11 is an ejector rod capable of extending into the mould cavity, preferably adopts an air cylinder, and an expansion rod of the air cylinder extends into the mould cavity and drives the bottle body to be separated.

In practical operation, the bottle blowing mechanism 3 includes a lifting driving assembly (as shown in fig. 3) corresponding to each mold assembly one by one, the lifting driving assembly includes a vertical guide rod 13, a supporting platform 14 capable of vertically lifting along the guide rod 13, and a driving portion for driving the supporting platform 14 to lift, and the driving portion drives the mold assemblies to lift along the guide rod 13 through the supporting platform 14. The lifting driving assembly is arranged on the side, opposite to the blowing channel, of the mold assembly, so that the lifting driving assembly is ensured to have abundant assembly space, the blowing channel can be effectively avoided, and the bottle blowing operation is ensured to be smoothly carried out. The number of the guide rods 13 is at least three, and the guide rods 13 are respectively arranged on the periphery of the bearing platform 14, so that the guide rods 13 not only can vertically guide the bearing platform 14, but also can ensure that the bearing platform 14 is always in a horizontal state.

Specifically, the driving portion comprises a screw nut 15 arranged in the middle of the supporting platform 14, a vertically arranged screw rod 16 and a motor fixedly connected to the rack, the motor drives the screw rod 16 to rotate and drives the supporting platform 14 to lift through the screw nut 15, the motor is arranged at the bottom of the rack 1 and facilitates lowering of the gravity center of the bottle blowing machine, the screw rod 16 is vertically arranged on the rack in a rotating mode and can be linked with a rotating shaft 6 of the motor, and the supporting platform 14 can be driven to lift along a preset path through the screw nut 15. The lifting speed of the bearing platform 14 is controlled by adjusting the rotating speed of the motor, and the bearing platform 14 can have different lifting speeds by matching with the opening and closing driving piece 8, so that the mold clamp 5 can be quickly lifted to the top of the blowing channel in a mold opening state, and can also be synchronously lowered with the pipe blank 4 in a mold closing state.

In practical operation, the lifting driving assembly comprises a counterweight part, the counterweight part comprises a fixed pulley 17 arranged at the top of the guide rod 13, a counterweight 19 matched with the weight of the mold assembly and a steel wire rope 18 bridged between the bearing platform 14 and the counterweight 19, the middle section of the steel wire is overlapped on the fixed pulley 17, and two ends of the steel wire droop and are respectively fixedly connected with the bearing platform 14 and the counterweight 19. The influence of the weight of the die assembly on the stable operation of the driving part is reduced by arranging the balance weight part 19, and the load of the motor is effectively reduced.

In actual operation, each mould clamp 5 in the mould assembly can use the same rotating shaft 6, and the rotating shaft 6 is rotatably and vertically connected on the bearing platform 14, so that the mould clamps 5 are always in a vertical superposition alignment state, the mould clamps 5 can be arranged at equal intervals through vertical limiting parts, and the independent operation and mutual noninterference of the adjacent mould clamps 5 are ensured.

Claims (10)

1. The efficient hollow extrusion bottle blowing machine comprises a rack (1), and an extrusion mechanism (2) and a bottle blowing mechanism (3) which are arranged on the rack (1), wherein the extrusion mechanism (2) is arranged above the bottle blowing mechanism (3), and the extrusion mechanism (2) conveys a tube blank (4) which is supplied to the bottle blowing mechanism (3) to blow into a bottle body downwards, and is characterized in that the bottle blowing mechanism (3) comprises at least two groups of mould components which are circularly lifted in an avoiding mode, the mould components avoid through mould opening to form a blowing channel which is coaxial and vertical with the tube blank (4) and lift upwards, and then the mould components receive the tube blank (4) and blow into the bottle body when the tube blank passes through the blowing channel downwards.

2. The efficient hollow extrusion bottle blowing machine according to claim 1, wherein the mold assembly comprises a mold clamp (5) and an opening and closing driving member (8) for driving the mold frame to open and close, the mold clamp (5) comprises two mold plates (7) hinged through a rotating shaft (6), and the opening and closing driving member (8) drives the mold plates (7) to open and close synchronously left and right by taking the rotating shaft (6) as a center, so that the mold clamp (5) is switched between an open mold state for forming a blowing channel and a closed mold state for receiving a tube blank (4) and blowing the tube blank into a bottle.

3. The efficient hollow bottle blowing machine according to claim 2, wherein the mold assembly comprises at least two mold clamps (5) which are arranged in a height-staggered manner and can be lifted synchronously, and the vertical projections of the mold clamps (5) are overlapped with each other, so that a vertically through blowing channel is formed when the mold clamps (5) are in an open state.

4. The efficient hollow extrusion bottle blowing machine according to claim 3, characterized in that the mold clamps (5) in the same set of mold components are opened and closed left and right synchronously; or the mold clamps (5) in the same group of mold assemblies are opened from bottom to top in sequence; or the mold clamps (5) in the same group of mold components are sequentially closed from bottom to top.

5. The efficient hollow extrusion bottle blowing machine according to claim 2, characterized in that the mold clamp (5) forms a mold cavity by closing the mold, the top of the mold cavity forms an auxiliary processing part, the mold clamp (5) is provided with a gas needle (9) which can be inserted into the mold cavity laterally, and after the mold clamp (5) is closed, the tube blank (4) is blown into a bottle body by the gas needle (9) inserted from outside to inside; or the top of the die clamp (5) is provided with a blade (10), and the blade (10) horizontally cuts the tube blank (4) so as to separate the bottle body from the upper tube blank (4); or the mold clamp (5) is provided with a demolding part (11), and the demolding part (11) can be an ejector rod capable of extending into the mold cavity or an air blowing opening communicated with the mold cavity.

6. The efficient hollow extrusion bottle blowing machine according to claim 1, characterized in that the extrusion mechanism (2) comprises a downward opening (12), the opening (12) and the blowing channel are coaxially arranged, the descending speed of the die assembly is synchronous with the discharging speed of the opening (12), so that the bottom end of the tube blank (4) is clamped by the die assembly to keep the wall thickness constant.

7. The efficient hollow extrusion bottle blowing machine according to any one of claims 1-6, wherein any one set of die components is arranged in a staggered manner when in a film opening state and the vertical projections of the rest sets of die components are arranged in a die closing state.

8. The efficient hollow bottle blowing machine according to claim 7, wherein the bottle blowing mechanism (3) comprises two sets of mold assemblies respectively disposed at two sides of the bottle blowing channel, and the vertical projections of the two sets of mold assemblies respectively in the mold opening state and the mold closing state are arranged in a staggered manner, so that the mold assembly in the mold closing state descending and the mold assembly in the mold opening state ascending are staggered and avoided.

9. The efficient hollow extrusion bottle blowing machine according to claim 7, wherein the bottle blowing mechanism (3) comprises a lifting driving assembly corresponding to each mold assembly one by one, the lifting driving assembly comprises a guide rod (13) vertically arranged, a supporting platform (14) capable of vertically lifting along the guide rod (13) and a driving part driving the supporting platform (14) to lift, and the driving part drives the mold assemblies to lift along the guide rod (13) through the supporting platform (14).

10. The efficient hollow extrusion bottle blowing machine according to claim 9, wherein the driving part comprises a screw nut (15) arranged in the middle of the supporting platform (14), a vertically arranged screw lever (16) and a motor fixedly connected to the frame, the motor drives the screw lever (16) to rotate and drives the supporting platform (14) to lift through the screw nut (15); or, the lifting driving assembly comprises a counterweight part, the counterweight part comprises a fixed pulley (17) arranged at the top of the guide rod (13), a counterweight part (19) matched with the weight of the die assembly and a steel wire rope (18) bridged between the bearing platform (14) and the counterweight part (19), the middle section of the steel wire is lapped on the fixed pulley (17), and two ends of the steel wire are drooping and are respectively fixedly connected with the bearing platform (14) and the counterweight part (19).

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