CN113857453A - Die-casting assembly line for two ends of lifter zipper - Google Patents
Die-casting assembly line for two ends of lifter zipper Download PDFInfo
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- CN113857453A CN113857453A CN202111160989.9A CN202111160989A CN113857453A CN 113857453 A CN113857453 A CN 113857453A CN 202111160989 A CN202111160989 A CN 202111160989A CN 113857453 A CN113857453 A CN 113857453A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F11/00—Cutting wire
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F23/00—Feeding wire in wire-working machines or apparatus
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D31/00—Cutting-off surplus material, e.g. gates; Cleaning and working on castings
- B22D31/002—Cleaning, working on castings
Abstract
The invention relates to a die-casting production line for two ends of a lifter zipper, which sequentially comprises a pay-off rack, a wire feeding and cutting station, a cutting and embossing station moving module, an embossing station, an embossing ball detection station hoisting module, an embossing ball detection station moving module, a zinc head die-casting station, a die-casting sharp sprocket removal station hoisting module, a zinc head sharp sprocket removal station, a sprocket area pre-tensioning detection station, a mechanical arm, a spring assembly station, a finished product blanking rack and an electrical cabinet along the die-casting processing procedure of the lifter zipper. The die-casting assembly line for the two ends of the lifter zipper can fully automatically complete all original procedures without operators, and improves the production efficiency and the yield.
Description
Technical Field
The invention relates to the technical field of lifter zipper production equipment, in particular to a die-casting assembly line for two ends of a lifter zipper.
Background
The lifter zipper main body is a wire harness assembled by a steel wire rope and die-casting joints on two sides, and other parts are inserted into the steel wire rope according to requirements. The lifting control device is mainly applied to lifting control of various vehicle doors and windows.
The lifter zipper can be processed and finished by 8 procedures in the production process, and the specific procedures are respectively as follows: 1. the process is finished by an automatic steel rope cutting and continuous cotton beating machine, and only material circulation is needed without personnel; 2. die-casting the steel rope pattern side (A side) after die-filling, wherein 1 die-filling person and 1 die-casting person are needed in the process; 3. removing the sharp of the die-cast zinc head, wherein the process is carried by the die-casting personnel in the previous process; 4. the other side (B side) of the steel rope is subjected to fixed-length fine cutting and patterning, and 1 person is needed in the process; 5. die-casting after die-filling is carried out on the side B of the steel rope, and 1 die-filling person and 1 die-casting person are needed in the process; 6. removing the sharp of the die-cast zinc head, wherein the process is carried by the die-casting personnel in the previous process; 7. performing pre-pull detection on the zinc heads on the two sides, and detecting the binding force of the zinc heads; the length of the zinc heads on two sides is detected, the length of the product is detected, and 1 person is needed in the process; 8. the spring was manually threaded through the steel cord, requiring 1 person for this procedure. Therefore, the elevator zipper has more production processes, more required personnel and low efficiency and is easy to make mistakes, and most of the production processes are manual operation modes.
In order to solve the above problems, the applicant proposes a die casting line for both ends of a lifter zipper.
Disclosure of Invention
The invention aims to provide a die-casting assembly line for two ends of a zipper of a lifter, which can fully automatically complete all original procedures without operators and improve the production efficiency and the yield.
In order to achieve the purpose, the die-casting processing procedure of the lifter zipper of the invention sequentially comprises a pay-off rack, a wire feeding and cutting station, a cutting and embossing station moving module, an embossing station, an embossing ball detection station lifting module, an embossing ball detection station moving module, a zinc head die-casting station, a die-casting sharp sprocket removing station lifting module, a zinc head sharp sprocket removing station, a sprocket area pre-stretching detection station, a mechanical arm, a spring assembly station, a finished product blanking rack and an electrical cabinet;
the pay-off rack is used for paying off the steel rope wound on the steel rope disc; a plurality of stations for placing the steel rope discs are arranged on the pay-off rack side by side, and each station is provided with a driving device for driving the steel rope discs to rotate;
the wire feeding and cutting station comprises a cutting mechanism and a wire feeding mechanism; the cutting mechanism is sequentially provided with a steering wheel, a guide wheel, a pressing bearing, a pre-feeding mechanism and a cutting seat along the conveying direction of the steel rope; the compression bearing is a one-way rotating bearing; the pre-feeding mechanism comprises a pre-feeding seat, a pressing cylinder and a pre-feeding cylinder; the pressing cylinder is arranged on the pre-feeding seat, and a piston rod of the pressing cylinder is vertically arranged downwards; the pre-air feeding cylinder is horizontally arranged along the conveying direction of the steel rope, and the head of a piston rod of the pre-air feeding cylinder is fixed with the pre-air feeding seat; the cutting seat is provided with a cutting cylinder and a cutting knife, a piston rod on the cutting cylinder is vertically arranged downwards, and the cutting knife is fixed at the end part of the piston rod of the cutting cylinder;
the wire feeding mechanism comprises a wire feeding bracket, a first synchronous belt, a first motor and a fixed-length wire feeding rotary jaw; the wire feeding support is arranged on the outer side of the cutting seat, the first synchronous belt is horizontally arranged on the wire feeding support, and the first motor is used for driving the first synchronous belt to move; the fixed-length wire feeding rotary clamping jaw is fixed on the first synchronous belt;
the cutting and pattern making station moving module is used for conveying the steel rope from the wire feeding and cutting station to the pattern making station;
the pattern making station is used for making patterns at two ends of the steel rope conveyed by the conveying module between the cutting pattern making stations;
the flower ball detection workshop hoisting module is used for conveying the steel rope after being subjected to flower beating to pass through the flower ball detection workshop for detection;
the ball-flower detecting station is provided with a ball-flower detector for detecting the size of the ball-flower on the steel rope;
the moving module for the flower ball detection die casting stations is used for moving steel ropes qualified in flower ball detection to the die casting stations, and a second lifting cylinder is arranged on the moving module for the flower ball detection die casting stations;
the die-casting station is used for die-casting the zinc heads at two ends of the steel rope, a die-casting machine is arranged on the die-casting station, and a die-casting die is arranged at a feeding part of the die-casting machine;
the hoisting module between the die-casting sharp-removing chain wheel stations is used for sequentially moving the steel rope after die-casting to the zinc head sharp-removing station and the chain wheel area pre-stretching detection station for operation;
the sharp-removing work station is used for cutting off redundant zinc heads at two ends of the steel rope after die casting;
the chain wheel area pre-tensioning detection work station is used for performing tension test on zinc heads at two ends of the steel rope and detecting the length of the steel rope;
the manipulator is used for clamping and transferring the steel rope detected by the chain wheel area pre-stretching detection station to the spring assembly station;
the spring assembly work station is used for sleeving the steel rope clamped and transferred by the manipulator with a spring;
the finished product blanking frame is used for collecting finished products of the assembled springs.
Preferably, a steel rope tension adjusting module is arranged right in front of each station on the pay-off rack; the steel rope tension adjusting modules respectively comprise two first guide wheels, a slide rod, a sliding roller and a second guide wheel; the two first guide wheels are arranged at the top of the pay-off rack in front of and behind the first guide wheels and are positioned right in front of the corresponding stations; the sliding rod is vertically fixed on the pay-off rack and located between the two first guide wheels, a starting sensor and a stopping sensor are fixed on the sliding rod, the starting sensor is located above the stopping sensor, and the starting sensor and the stopping sensor are respectively and electrically connected with the driving devices on the corresponding stations; the sliding roller is arranged on the sliding rod in a sliding manner; the second guide wheel is arranged on the pay-off rack.
Preferably, a steel rope anti-wire-jumping device is further arranged between the guide wheel and the compression bearing, and the steel rope anti-wire-jumping device comprises an installation frame, two sensors, two guide columns and a detection sliding block; a plurality of through holes for the steel ropes to pass through are formed in the front and the back of the mounting rack, and the through holes in the front and the back of the mounting rack correspond to each other one by one; the two guide columns are horizontally arranged on the mounting rack; the detection sliding block is sleeved on the two guide posts in a sliding mode, a plurality of guide holes corresponding to the first through holes in the mounting frame are formed in the detection sliding block, and the aperture of each guide hole is smaller than that of each through hole; the two inductors are symmetrically fixed at the front end and the rear end of the mounting rack; and compression springs are sleeved between the front sides of the mounting frames and the detection sliding blocks on the two guide columns.
Preferably, the inter-cutting and pattern-printing station moving module is provided with an inter-cutting and pattern-printing station moving module chuck A and an inter-cutting and pattern-printing station moving module chuck B; and a first lifting cylinder is connected below the moving module chuck A between the cutting and embossing stations and the moving module chuck B between the cutting and embossing stations.
Preferably, the embossing station comprises an embossing fixing seat, an embossing upper pressing die cylinder, an embossing upper pressing die, an embossing cylinder and an embossing core; the upper patterning pressing die cylinder is fixed at the top of the patterning fixing seat, a piston rod on the upper patterning pressing die cylinder is vertically arranged downwards, and the upper patterning pressing die is fixed at the end of the piston rod on the upper patterning pressing die cylinder; the pattern forming air cylinder is arranged on the outer side of the pattern forming fixed seat, and a piston rod on the pattern forming air cylinder horizontally points to the pattern forming fixed seat; the pattern making core is fixed at the head of the piston rod on the pattern making cylinder.
Preferably, the die-casting sharp-removing chain wheel workshop hoisting module comprises a hoisting frame, a second synchronous belt, a second motor, a fixed side clamping jaw and a rotating side clamping jaw; the second synchronous belt is arranged on the hoisting frame; the second motor is used for driving a second synchronous belt to move; the fixed side clamping jaw is arranged on one side of the hoisting frame; the rotating side clamping jaw is arranged on the second synchronous belt.
Preferably, the sharp removing station comprises a sharp removing fixing seat, a sharp removing cylinder, an upper thimble, a sharp removing knife plate, an oil cylinder and a lower thimble; the sharp-removing cylinder is arranged at the top of the sharp-removing fixed seat, and a piston rod on the sharp-removing cylinder is vertically arranged downwards; the upper thimble is vertically fixed at the end part of the piston rod on the sharp-removing cylinder; the lower thimble is vertically fixed at the bottom of the sharpening fixed seat and corresponds to the upper thimble one by one; the hydro-cylinder is also fixed remove the top of sharp fixing base, and the vertical downward setting of hydraulic stem of hydro-cylinder, remove sharp cutting board and fix the tip of the hydraulic stem on the hydro-cylinder.
Preferably, the sprocket region pre-tensioning detection station comprises a pre-tensioning mechanism and a detection mechanism;
chain wheels are arranged on two sides of the chain wheel area pre-tensioning detection work station, and a plurality of clamping grooves are formed in the chain wheels at equal intervals; the pre-pulling mechanism comprises a pair of pre-pulling clamping blocks, a pre-pulling cylinder and a tension sensor; the pair of pre-tensioning fixture blocks are symmetrically arranged on two sides of the pre-tensioning detection station in the chain wheel area, and first down-pressing air cylinders are arranged at the tops of the pre-tensioning fixture blocks; the pre-tensioning cylinder is horizontally arranged on the outer side of any pre-tensioning clamping block, and a piston rod on the pre-tensioning cylinder is fixedly connected with the first downward-pressing cylinder; the tension sensor is arranged on the pre-tensioning cylinder;
the detection mechanism is positioned at the rear side of the pre-tensioning mechanism; the detection mechanism comprises a pair of measuring clamping blocks, a measuring connecting seat, a connecting block jacking cylinder and weights; the pair of measuring clamping blocks are stacked on two sides of the chain wheel area pretensioning detection station and are positioned on the rear side of the pretensioning clamping block, and a second pressing cylinder is arranged at the top of each measuring clamping block; the measuring connecting seat is arranged on the outer side of any measuring clamping block, the connecting block is arranged on the measuring connecting seat in a sliding manner along the axial direction of the steel rope to be measured, and one end of the connecting block is connected with the second pressing cylinder; the other end of the connecting block is hung with the weight; a grating ruler is arranged on the measuring connecting seat; the connecting block jacking cylinder is fixed on the measuring connecting seat, and a piston rod on the connecting block jacking cylinder points to the second pressing cylinder.
Preferably, the spring assembly work station comprises a spring feeding vibration disc, a blowing feeding mechanism, an opening cylinder, a spring assembly work station bracket and a spring receiving hopper; the opening cylinder is horizontally fixed on the spring assembly work station bracket, and the spring receiving hopper is fixed at the end part of a piston rod on the opening cylinder; the spring feeding vibration disc conveys the springs into the spring receiving hopper through the blowing feeding mechanism.
Preferably, a bolt is arranged at an outlet of the finished product blanking frame.
Compared with the prior art, the die-casting assembly line for the two ends of the lifter zipper has the following advantages that:
(1) the automation degree is high, the original manual operation mode is changed, the production efficiency is improved, and the rejection rate is reduced;
(2) the steel rope anti-wire-jumping device is arranged on the steel rope feeding and cutting station, so that the rejection rate of the lifter zipper in the processing process is further reduced, and the whole production line is indirectly protected;
(3) the chain wheel area pre-tensioning measurement work station is arranged on the production line, the performance of the product is directly detected in the production process, subsequent detection is not needed, the production and detection efficiency of the product is further improved, and the quality of the product is ensured;
(4) the operation is convenient and fast.
Drawings
FIG. 1 is a top view of a die casting line at two ends of a lifter zipper of this embodiment;
FIG. 2 is a side view of a die casting line at both ends of the elevator zipper of the present embodiment;
FIG. 3 is a schematic structural view of a pay-off stand;
FIG. 4 is a schematic structural diagram of a cutting structure;
FIG. 5 is a schematic view of the wire feeding and cutting station;
FIG. 6 is a schematic structural view of a steel rope anti-jumping device;
FIG. 7 is a schematic structural view of a shifting module between cutting and pattern making stations;
FIG. 8 is a schematic view of the construction of the embossing station 1;
FIG. 9 is a schematic view of the construction of the embossing station 2;
FIG. 10 is a schematic structural view of a moving module between the flower ball detection die-casting stations 5;
fig. 11 is a schematic structural view of the die casting station 5;
FIG. 12 is a schematic structural view of a die-casting sharp sprocket removal station hoisting module;
FIG. 13 is a schematic view of the rotation of the rotating side jaws in the die cast de-sharpening sprocket inter-station hoist module;
FIG. 14 is a schematic structural view of a zinc head sharpening station;
FIG. 15 is a schematic view of the sprocket area pre-tension detection station configuration;
FIG. 16 is a schematic view of the structure of the measuring mechanism;
FIG. 17 is a schematic view of the spring assembly station coupled to a robot;
FIG. 18 is a schematic view of a spring assembly station;
FIG. 19 is a partial schematic view of a finished blanking stand;
FIG. 20 is a schematic structural diagram of a finished product according to the present embodiment;
FIG. 21 is a schematic view of a side of the pre-tensioning mechanism having a pre-tensioning cylinder;
fig. 22 is a schematic side view of the detecting mechanism without the measuring connecting socket.
Wherein the content of the first and second substances,
1-pay-off rack: 101-station; 102-a first guide wheel; 103-a second guide wheel; 104-a sliding roller; 105-activating a sensor; 106-a stop sensor; 107-a slide bar;
2-wire feeding and cutting work station: 201-a steering wheel; 202-a guide wheel; 203-steel rope anti-jumping device; 2031-a mounting rack; 2032-a sensor; 2033-detect slider; 2034-a guide hole; 2035-guide post; 204-hold down bearing; 205-pre-feeding seat; 206-a hold-down cylinder; 207-pre-feed cylinder; 208-a cutting cylinder; 209-cutting knife; 210-wire feeding bracket; 211-a first synchronization belt; 212-fixed-length wire feeding rotary jaw; 213-a first motor;
3-a pattern making station: 301-a pattern making cylinder; 302-core of beating flower; 303-patterning an upper die pressing cylinder; 304-patterning and pressing; 305-a fixed base for patterning;
4-ball-of-flower detection station: 401-ball of flowers detector;
5-zinc head die-casting work station: 501, die casting machine; 502-die casting mold;
6-zinc head sharpening station: 601-removing the sharp fixing seat; 602-de-sharp cylinder; 603-oil cylinder; 604-go up the thimble; 605-sharp removal blade; 606-lower ejector pin;
7-unqualified falling box for detection of the flower balls;
8-the chain wheel area prestretches the detection station: 801-a sprocket; 802-card slot; 803-pre-tensioning fixture block; 804-pretension cylinder; 805-a first down cylinder; 806-a second hold-down cylinder; 807-measuring a fixture block; 808-measuring the connection seat; 809-connecting blocks; 810-a connecting block tightly props up the air cylinder; 811-weight;
9-a manipulator;
10-spring assembly station: 1001-spring feed vibratory pan; 1002-a blowing feeding mechanism; 1003-spring assembly station support; 1004-spring receiving hopper; 1005-opening the cylinder;
11-finished product blanking frame: 1101-a plug pin;
12-an electrical cabinet;
13-a transfer module between cutting and pattern-making stations: 1301-moving a module chuck A between cutting and embossing work stations; 1302-cutting the moving module chuck B between the flower-making stations; 1303 — first lift cylinder;
14-moving module between die casting stations is detected to flower ball: 1401-a second uplift cylinder;
15-lifting module between flower ball-making detection stations;
16-die casting removes sharp sprocket worker hoist and mount module between station: 1601-a hoisting frame; 1602-a second synchronous belt; 1603 — second motor; 1604-rotating the side jaws; 1605-fixed side jaws.
Detailed Description
The invention is further described below with reference to the following figures and specific examples.
As shown in fig. 1-2, the die casting process of the lifter zipper includes an unwinding frame 1, a wire feeding and cutting station 2, a cutting and embossing station moving module 13, an embossing station 3, an embossing ball detecting station hoisting module 15, an embossing ball detecting station 4, an embossing ball detecting station moving module 14, a zinc head die casting station 5, a pressure casting and sharp sprocket removing station hoisting module 16, a zinc head sharp removing station 6, a sprocket area pre-stretching detecting station 8, a manipulator 9, a spring assembly station 10, a finished product blanking frame 11 and an electrical cabinet 12 in sequence.
As shown in fig. 3, the pay-off rack 1 is used for paying off a steel rope wound on a steel rope reel; a plurality of stations 101 for placing steel rope discs are arranged on the pay-off rack 1 side by side, and each station 101 is provided with a driving device which is used for driving the steel rope discs to rotate, so that the steel ropes on the steel rope discs are paid off; in this embodiment, the driving device is a roller motor.
A steel rope tension adjusting module is arranged right in front of each station 101 on the pay-off rack 1; the steel rope tension adjusting modules respectively comprise two first guide wheels 102, a slide rod 107, a sliding roller 104 and a second guide wheel 103; the two first guide wheels 102 are arranged at the top of the pay-off rack 1 in tandem and are positioned right in front of the corresponding stations 101; the slide bar 107 is vertically fixed on the pay-off rack 1 and positioned between the two first guide wheels 102, a starting sensor 105 and a stopping sensor 106 are fixed on the slide bar 107, the starting sensor 105 is positioned above the stopping sensor 106, and the starting sensor 105 and the stopping sensor 106 are respectively electrically connected with the driving devices on the corresponding stations 101; the sliding roller 104 is arranged on the sliding rod 107 in a sliding manner; and the second guide wheel 103 is arranged on the pay-off rack 1 and used for guiding the steel rope to the wire feeding and cutting station 2.
During the paying-off operation, first of all a reel of steel cable wound around a steel cable is installed in the working position 101, each reel of steel cable is threaded according to the arrow in fig. 3, and the steel cable is continuously fed forward when the machine is running. When the steel rope is conveyed forwards, the sliding roller 104 moves upwards due to the pulling of the steel rope, when the sliding roller 104 senses the starting sensor 105, the first roller motor 213 is started, so that the steel rope disc is driven to rotate, the purpose of conveying the steel rope is achieved, the sliding roller 104 moves downwards along with the continuous conveying of the steel rope, and when the sliding roller 104 senses the stopping sensor 106, the roller motor stops rotating; the automatic wire feeding can be realized by circulating the steps.
As shown in fig. 4, the wire feeding cutting station 2 includes a cutting mechanism and a wire feeding mechanism; a steering wheel 201, a guide wheel 202, a pressing bearing 204, a pre-feeding mechanism and a cutting seat are sequentially arranged on the cutting mechanism along the conveying direction of the steel rope; the pressing bearing 204 is a one-way rotating bearing, so that the steel rope can only be conveyed forwards and cannot retreat; the pre-feeding mechanism comprises a pre-feeding seat 205, a pressing air cylinder 206 and a pre-feeding air cylinder 207; the pressing air cylinder 206 is arranged on the pre-feeding seat 205, and a piston rod of the pressing air cylinder 206 is vertically arranged downwards; the pre-feeding cylinder 207 is horizontally arranged along the conveying direction of the steel rope, and the head of a piston rod of the pre-feeding cylinder 207 is fixed with the pre-feeding seat 205; cut and be equipped with on the seat and cut cylinder 208 and cut sword 209, cut the vertical downward setting of piston rod on the cylinder 208, cut sword 209 and fix the tip of cutting cylinder 208's piston rod.
As shown in fig. 5, the wire feeding mechanism includes a wire feeding bracket 210, a first synchronous belt 211, a first motor 213 and a fixed-length wire feeding rotary claw 212; the wire feeding bracket 210 is arranged at the outer side of the cutting seat, the first synchronous belt 211 is horizontally arranged on the wire feeding bracket 210, and the first motor 213 is used for driving the first synchronous belt 211 to move; the fixed-length wire feeding rotary claw 212 is fixed to the first timing belt 211 and linearly moves in the horizontal direction along with the first timing belt 211.
In this embodiment, as shown in fig. 4, a steel rope anti-skipping device 203 is further disposed between the guide wheel 202 and the pressing bearing 204, and specifically, as shown in fig. 6, the steel rope anti-skipping device 203 includes a mounting bracket 2031, two sensors 2032, two guide posts 2035, and a detection sliding block 2033; a plurality of through holes for the steel ropes to pass through are formed in the front and the back of the mounting rack 2031, and the through holes in the front and the back of the mounting rack 2031 correspond to each other one by one; the two guide columns 2035 are horizontally arranged on the installation frame 2031; the detection sliding block 2033 is slidably sleeved on the two guide posts 2035, a plurality of guide holes 2034 corresponding to the through holes on the mounting frame 2031 one by one are arranged on the detection sliding block 2033, and the aperture of each guide hole 2034 is smaller than that of each through hole. The two inductors 2032 are symmetrically fixed at the front end and the rear end of the mounting rack 2031; compression springs (not shown) are sleeved between the front side of the mounting frame 2031 and the detection sliding block 2033 on the two guide columns 2035. If there is a broken strand of steel wire on the surface of the steel rope, the broken strand will not pass through the guide hole 2034 of the detection sliding block 2033 (the inner diameter of the hole is only 0.02mm larger than the outer diameter of the steel rope), at this moment, the detection sliding block will be pulled to the right (state in fig. 6), in the process of pulling the detection sliding block 2033 to the right, the sensor 2032 will sense the detection sliding block 2033, and at this moment, the device will alarm and stop. Note that: in a normal state, the detection slider 2033 is kept at the left position in fig. 6 by the urging force of the spring.
As shown in fig. 7, the inter-cutting and embossing station moving module 13 is used for transporting the steel rope from the wire feeding and cutting station to the embossing station; specifically, the inter-cutting and embossing station moving module 13 is provided with an inter-cutting and embossing station moving module chuck a1301 and an inter-cutting and embossing station moving module chuck B1302; and a first lifting cylinder 1303 is connected to the lower parts of the inter-cutting and inter-patterning station moving module chuck A1301 and the inter-cutting and inter-patterning station moving module chuck B1302.
The steel rope drawn out from the pay-off rack 1 sequentially passes through a steering wheel 201, a guide wheel 202, a steel rope wire jumping prevention device 203, a pressing bearing 204, a pre-feeding mechanism and a cutting mechanism to be cut. The pressing bearing 204 is a one-way rotating bearing, the steel rope can only be conveyed forwards, and cannot move backwards, and the bearing presses the steel rope by virtue of a spring. The wire feeding and cutting work station has the following action sequence: the pressing cylinder 206 of the pre-feeding mechanism presses the steel rope, and then the pre-feeding cylinder 207 pushes the whole pre-feeding base 205 to move forward for a fixed distance, at this time, the head of the steel rope already extends out of the cutting knife 209 for a distance, then the fixed-length wire feeding rotary claw 212 clamps the front side of the steel rope, the first motor 213 is started to drive the fixed-length wire feeding rotary claw 212 to move forward, the steel rope is pulled out for a required distance, the rear side of the steel rope is clamped by the cutting and pattern-making inter-station moving module chuck A1301, then the cutting knife 209 acts to cut the steel rope, at this time the fixed-length wire feeding rotary claw 212 rotates, the first motor 213 is started to return the fixed-length wire feeding rotary claw 212 back until the two sides of the steel rope are opposite to each other, finally the front side of the steel rope is clamped by the cutting and pattern making inter-station moving module chuck B1302, and the cutting and pattern making inter-station moving module 13 moves the die-setting steel rope to the pattern making station 3.
The pattern making station 3 is used for making patterns at two ends of the steel rope conveyed by the cutting and pattern making station moving module 13. Specifically, as shown in fig. 8 and 9, the embossing station 3 includes an embossing fixing base 305, an embossing upper pressing die cylinder 303, an embossing upper pressing die 304, an embossing cylinder 301, and an embossing core 302; the upper embossing die cylinder 303 is fixed at the top of the upper embossing fixing seat 305, a piston rod on the upper embossing die 304 cylinder 303 is vertically arranged downwards, and the upper embossing die 304 is fixed at the end of the piston rod on the upper embossing die cylinder 303; the pattern making cylinder 301 is arranged at the outer side of the pattern making fixed seat 305, and a piston rod on the pattern making cylinder 301 horizontally points to the pattern making fixed seat 305; the pattern making core 302 is fixed on the head of the piston rod on the pattern making cylinder 301.
After the cutting and pattern making inter-station moving module 13 moves the whole-die steel rope to the position of the pattern making station 3, the first lifting cylinder 1303 lifts the cutting and pattern making inter-station moving module chuck A1301 and the cutting and pattern making inter-station moving module chuck B1302, meanwhile, the cutting and pattern making inter-station moving module 13 conveys the cutting and pattern making inter-station moving module chuck A1301 and the cutting and pattern making inter-station moving module chuck B1302 forwards to convey the steel rope to the pattern making station 3, at the moment, the pattern making upper die cylinder 303 acts to press and mould the pattern making upper die 304, finally, the pattern making cylinder 301 pushes the pattern making core 302 to make the head of the steel rope generate a pattern ball, the pattern making upper die 304 is lifted, and the position of the cutting and pattern making inter-station moving module 13 is restored.
As shown in fig. 10, the inter-wrenching routing detection station hoisting module 15 is used for conveying the steel rope after wrenching through the wrenching detection station 4 for detection;
and the ball detection station 4 is provided with a ball detector 401 for detecting the size of the ball on the steel rope.
The steel rope of the last work station which has finished the flower ball is handed over and conveyed backwards by the hoisting module 15 between the flower ball detection work stations, and can pass through the flower ball detector in the conveying process, and the size of each flower ball can be determined by the flower ball detector at the moment, and the steel rope is qualified and unqualified. Finally, the product is conveyed to the state shown in fig. 10 by the aid of the inter-site flower ball hitting detection lifting module 15, then is handed over to the inter-site flower ball detection moving module 14, and then is moved to the next station, namely the die-casting station 55, by the inter-site flower ball detection moving module 14.
The inter-die-casting-station moving module 14 for detecting the flower balls is used for moving the steel ropes qualified in flower ball detection to the die-casting station 5, and a second uplifting cylinder 1401 is arranged on the inter-die-casting-station moving module 14 for detecting the flower balls.
As shown in fig. 11, the die-casting station 5 is used for die-casting the zinc head at two ends of the steel rope, a die-casting machine 501 is arranged on the die-casting station 5, and a die-casting mold 502 is arranged at a feeding position of the die-casting machine 501. And finally, after the product is moved to the die-casting station 5 by the flower ball detection inter-die-casting station moving module 14 in the last station, the second lifting cylinder 1401 of the flower ball detection inter-die-casting station moving module 14 lifts the clamping jaw, the steel rope is conveyed forwards to the position right above the cavity of the die-casting die 502, the second lifting cylinder descends to enable the head of the steel rope to enter the cavity of the die-casting die 502, the die-casting machine closes the die and injects the steel rope, a zinc head is die-cast at the head of the steel rope, then the die-casting machine 501 opens the die, the position of the flower ball detection inter-die-casting station moving module 14 is restored, the flower ball detection inter-die-casting station moving module 16 is connected with the die-casting sharp sprocket station lifting module 16 for die-casting, and the die-casting inter-sharp sprocket station lifting module 16 moves the product to the next station. Note that: if the ball-flower detected by the former ball-flower detecting station 4 is not qualified, the product clamped by the hoisting module 16 between the die-casting removing sharp chain wheel stations can not be die-cast when passing through the die-casting station 5, and can be directly handed over to the next station, and the zinc head is removed from the unqualified ball-flower detecting blanking box 7 on the sharp chain wheel station 6.
The hoisting module 16 between the die-casting sharp-removing chain wheel stations is used for sequentially moving the steel rope after die-casting to the zinc head sharp-removing station 6 and the chain wheel area pre-stretching detection station 88 for operation; specifically, as shown in fig. 12 and 13, the die-casting sharp sprocket removing station hoisting module 16 includes a hoisting frame 1601, a second timing belt 1602, a second motor 1603, a fixed side clamping jaw 1605, and a rotating side clamping jaw 1604; the second synchronous belt 1602 is arranged on the hoisting frame 1601; the second motor 1603 is used for driving the second timing belt 1602 to move; the fixed side clamping jaw 1605 is arranged on one side of the hoisting frame 1601; the rotating-side holding jaw 1604 is provided on the second timing belt 1602, and moves linearly with the second timing belt 1602.
The sharp-removing station 6 is used for cutting off the redundant zinc heads at the two ends of the steel rope after die casting. Specifically, as shown in fig. 14, the sharpness removing station 6 includes a sharpness removing fixing base 601, a sharpness removing cylinder 602, an upper thimble 604, a sharpness removing blade 605, an oil cylinder 603, and a lower thimble 606; the de-sharpening cylinder 602 is arranged at the top of the de-sharpening fixed seat 601, and a piston rod on the de-sharpening cylinder 602 is vertically arranged downwards; the upper thimble 604 is vertically fixed at the end of the piston rod on the de-sharp cylinder 602; the lower ejector pins 606 are vertically fixed at the bottom of the sharpening fixed seat 601 and correspond to the upper ejector pins 604 one by one; the oil cylinder 603 is also fixed on the top of the sharpening fixed seat 601, the hydraulic rod of the oil cylinder 603 is vertically arranged downwards, and the sharpening blade plate 605 is fixed on the end part of the hydraulic rod on the oil cylinder 603. After the die-casting sharp-removing chain wheel inter-station hoisting module 16 moves a product from an upper station to a sharp-removing station 6, the die-casting sharp-removing chain wheel inter-station hoisting module 16 directly moves a die-casting zinc head between an upper thimble and a lower thimble of the sharp-removing station 6 through servo front-back left-right movement, then moves downwards to place the zinc head on the lower thimble 606, at the moment, the sharp-removing cylinder 602 controls the upper thimble 604 to press the zinc head downwards, the sharp-removing blade 605 is controlled to press downwards through the oil cylinder 603, and the redundant part of the zinc head is completely cut off through the zinc head by a cavity of the sharp-removing blade 605. At this time, the operation of removing the sharp is completed, then the hoisting module 16 between the die-casting and sharp-removing chain wheel stations is restored to the position before removing the sharp, the rotating side clamping jaw 1604 of the module is rotated to the position B from the position a, as shown in fig. 13, the second synchronous belt 1602 is controlled to move the rotating side clamping jaw 1604 backwards, the operation of straightening the steel rope is completed, and finally the steel rope is moved to the clamping groove of the chain wheel of the pre-drawing detection station 8 in the chain wheel area by the module. Note that: the products which are not die-cast in the previous station due to unqualified flower balls do not carry out sharpening operation when passing through the station, but directly fall into the unqualified flower ball detection blanking box 7 after being unfolded by the lifting module 16 between the die-casting sharpening chain wheel stations.
The chain wheel area pre-tensioning detection work station 8 is used for performing tension test on zinc heads at two ends of the steel rope and detecting the length of the steel rope; specifically, as shown in fig. 15, the sprocket region pre-tensioning detection station 8 includes a pre-tensioning mechanism and a detection mechanism; both sides of the chain wheel area pre-tensioning detection station 8 are provided with chain wheels 801, and the chain wheels 801 are provided with a plurality of clamping grooves 802 at equal intervals;
as shown in fig. 21, the pre-tensioning mechanism includes a pair of pre-tensioning latch 803, a pre-tensioning cylinder 804 and a tension sensor; the pair of pre-tensioning fixture blocks 803 are symmetrically arranged at two sides of the sprocket region pre-tensioning detection station 8, a first down-pressing cylinder 805 is arranged at the top of each pre-tensioning fixture block 803, and the pre-tensioning fixture blocks 803 fall under the driving of the first down-pressing cylinders 805; the pretensioning cylinder 804 is horizontally arranged on the outer side of any pretensioning fixture block 803, and a piston rod on the pretensioning cylinder 804 is fixedly connected with the first lower air cylinder 805. The tension sensor is disposed on the pretensioning cylinder 804.
As shown in fig. 16 and 22, the detection mechanism is located on the rear side of the pretensioning mechanism; the detection mechanism comprises a pair of measuring clamping blocks 807, a measuring connecting seat 808, a connecting block 809, a connecting block jacking cylinder 810 and weights 811; a pair of measuring clamping blocks 807 are stacked on two sides of the sprocket region pretensioning detection station 8 and located at the rear side of the pretensioning clamping block 803, a second pressing cylinder 806 is arranged at the top of the measuring clamping block 807, and the measuring clamping block 807 is driven by the second pressing cylinder 806 to fall; the measuring connecting seat 808 is arranged on the outer side of any measuring clamping block 807, the connecting block 809 is arranged on the measuring connecting seat 808 in a sliding manner along the axial direction of the steel rope to be measured, and one end of the connecting block 809 is connected with the second pressing cylinder 806; the other end of the connecting block 809 is connected with the weight 811 in a hanging manner; a grating ruler is arranged on the measuring connecting seat 808; the connecting block jacking cylinder 810 is fixed on the measuring connecting seat 808, and a piston rod on the connecting block jacking cylinder 810 points to the second pressing cylinder 806.
The products moved from the sharpening station 6 are placed in the pockets 802 at the front of the sprocket area, and then are moved backward by rotating the sprocket 801 one position at a time, and during the movement, each product passes through the pre-drawing mechanism and the measuring mechanism in sequence, and when passing through the two mechanisms, the products are pre-drawn and measured. The pre-stretching principle is as follows: after the product reaches the pre-tensioning mechanism, the pre-tensioning fixture blocks 803 at two sides can fall down and are inserted into the roots of the zinc heads at two sides of the steel rope, at the moment, the pre-tensioning cylinder 804 acts to pull the product backwards, when the tension sensor senses that the tension value reaches a set value, the pre-tensioning cylinder 804 is loosened, the pre-tensioning is qualified, and if the tension value is not reached or exceeds the set force value, the pre-tensioning is unqualified, and the equipment alarms and stops. The measurement principle is as follows: after the product reaches the measuring mechanism, the two side measuring blocks 807 of both sides can fall, the connecting block of the measuring mechanism pushes up the cylinder 810 tightly and loosens at this moment, the connecting block 809 is pulled backwards due to the gravity of the weight 811, and the measuring blocks 807 of one side are fixed on the connecting block 809, so the measuring blocks 807 can also move backwards until the product is straightened and cannot continue backwards, the grating ruler reads the position of the connecting block 809 at this moment, the length of the product is obtained through calculation, and the length is judged to be qualified or unqualified.
And the manipulator 9 is used for clamping and transferring the steel wire rope detected by the chain wheel area pre-tensioning detection station 8 to the spring assembly station 10.
The spring assembling work station 10 is used for sleeving the steel rope clamped and transferred by the manipulator with a spring. Specifically, as shown in fig. 17 and 18, the spring assembling station 10 includes a spring feeding vibration plate 1001, a blowing feeding mechanism 1002, an opening cylinder 1005, a spring assembling station bracket 1003 and a spring receiving hopper 1004; the opening cylinder 1005 is horizontally fixed on the spring assembly station bracket 1003, and the spring receiving hopper 1004 is fixed at the end part of the piston rod on the opening cylinder 1005; the spring feed vibratory tray 1001 delivers springs into a spring receiving hopper 1004 via a blow feed mechanism 1002. The chain wheel 801 on the chain wheel region pre-tension detection station 8 continuously rotates, when products are all arranged in the clamping grooves 802 close to the manipulator 9, the chain wheel 801 stops rotating, the manipulator 9 moves to the position of the chain wheel 801 according to a preset track to grab the products, and then the products are grabbed to the spring assembly station 10. Before the products reach the spring assembly station 10, the station has loaded the springs into the spring receiving hopper 1004 via the blow feeder 1002 (the spring receiving hopper 1004 is servo-displaced a product distance for each spring loaded). At this time, the clamping jaw on the manipulator 9 inserts the head of the steel rope of the product into the spring receiving hopper 1004 from the lower part, the opening cylinder 1005 acts to open the spring receiving hopper 1004, and the spring can freely penetrate into the steel rope (the zinc heads on two sides are different, the penetrating side zinc head is small, so the spring can pass through, the other side zinc head is large, so the spring can not drop). Finally, the manipulator 9 moves the product to a finished product blanking frame 11.
The finished product blanking frame 11 is used for collecting finished products of assembled springs. Preferably, as shown in fig. 19, a latch 1101 is arranged at an outlet of the finished product blanking frame, and when a certain number of products are reached, an operator can pull up the latch 1101 to take out the products. The final product is shown in fig. 20.
Although embodiments of the present invention have been shown and described above, it should be understood that the above embodiments are exemplary and not to be construed as limiting the present invention, and that changes, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. The die-casting assembly line comprises a pay-off rack, a wire feeding and cutting station, a cutting and pattern-making station moving module, a pattern-making station, a pattern-making ball detection station lifting module, a ball detection station moving module, a zinc head die-casting station, a die-casting sharp-removing chain wheel station lifting module, a zinc head sharp-removing station, a chain wheel area pre-stretching detection station, a mechanical arm, a spring assembly station, a finished product blanking rack and an electrical cabinet;
the pay-off rack is used for paying off the steel rope wound on the steel rope disc; a plurality of stations for placing the steel rope discs are arranged on the pay-off rack side by side, and each station is provided with a driving device for driving the steel rope discs to rotate;
the wire feeding and cutting station comprises a cutting mechanism and a wire feeding mechanism; the cutting mechanism is sequentially provided with a steering wheel, a guide wheel, a pressing bearing, a pre-feeding mechanism and a cutting seat along the conveying direction of the steel rope; the compression bearing is a one-way rotating bearing; the pre-feeding mechanism comprises a pre-feeding seat, a pressing cylinder and a pre-feeding cylinder; the pressing cylinder is arranged on the pre-feeding seat, and a piston rod of the pressing cylinder is vertically arranged downwards; the pre-air feeding cylinder is horizontally arranged along the conveying direction of the steel rope, and the head of a piston rod of the pre-air feeding cylinder is fixed with the pre-air feeding seat; the cutting seat is provided with a cutting cylinder and a cutting knife, a piston rod on the cutting cylinder is vertically arranged downwards, and the cutting knife is fixed at the end part of the piston rod of the cutting cylinder;
the wire feeding mechanism comprises a wire feeding bracket, a first synchronous belt, a first motor and a fixed-length wire feeding rotary jaw; the wire feeding support is arranged on the outer side of the cutting seat, the first synchronous belt is horizontally arranged on the wire feeding support, and the first motor is used for driving the first synchronous belt to move; the fixed-length wire feeding rotary clamping jaw is fixed on the first synchronous belt;
the cutting and pattern making station moving module is used for conveying the steel rope from the wire feeding and cutting station to the pattern making station;
the pattern making station is used for making patterns at two ends of the steel rope conveyed by the conveying module between the cutting pattern making stations;
the flower ball detection workshop hoisting module is used for conveying the steel rope after being subjected to flower beating to pass through the flower ball detection workshop for detection;
the ball-flower detecting station is provided with a ball-flower detector for detecting the size of the ball-flower on the steel rope;
the flower ball detection inter-die-casting station moving module is used for moving a steel rope qualified in flower ball detection to the die-casting station, and a second lifting cylinder is arranged on the flower ball detection inter-die-casting station moving module;
the die-casting station is used for die-casting the zinc heads at two ends of the steel rope, a die-casting machine is arranged on the die-casting station, and a die-casting die is arranged at a feeding position of the die-casting machine;
the hoisting module between the die-casting sharp-removing chain wheel stations is used for sequentially moving the steel rope after die-casting to the zinc head sharp-removing station and the chain wheel area pre-stretching detection station for operation;
the sharp-removing work station is used for cutting off redundant zinc heads at two ends of the steel rope after die casting;
the chain wheel area pre-tensioning detection work station is used for performing tension test on zinc heads at two ends of the steel rope and detecting the length of the steel rope;
the manipulator is used for clamping and transferring the steel rope detected by the chain wheel area pre-stretching detection station to the spring assembly station;
the spring assembly work station is used for sleeving the steel rope clamped and transferred by the manipulator with a spring;
the finished product blanking frame is used for collecting finished products of the assembled springs.
2. The elevator zipper two-end die-casting assembly line according to claim 1, wherein a steel rope tension adjusting module is arranged right in front of each station on the pay-off rack; the steel rope tension adjusting modules respectively comprise two first guide wheels, a slide rod, a sliding roller and a second guide wheel; the two first guide wheels are arranged at the top of the pay-off rack in tandem and are positioned right in front of the corresponding stations; the sliding rod is vertically fixed on the pay-off rack and located between the two first guide wheels, a starting sensor and a stopping sensor are fixed on the sliding rod, the starting sensor is located above the stopping sensor, and the starting sensor and the stopping sensor are respectively and electrically connected with the driving devices on the corresponding stations; the sliding roller is arranged on the sliding rod in a sliding manner; the second guide wheel is arranged on the pay-off rack.
3. The elevator zipper two-end die-casting assembly line according to claim 1, wherein a steel rope anti-wire-jumping device is further arranged between the guide wheel and the compression bearing, and comprises a mounting frame, two sensors, two guide columns and a detection sliding block; a plurality of through holes for the steel ropes to pass through are formed in the front and the back of the mounting rack, and the through holes in the front and the back of the mounting rack correspond to each other one by one; the two guide columns are horizontally arranged on the mounting rack; the detection sliding block is sleeved on the two guide columns in a sliding mode, a plurality of guide holes which correspond to the through holes in the mounting frame one by one are formed in the detection sliding block, and the aperture of each guide hole is smaller than that of each through hole; the two inductors are symmetrically fixed at the front end and the rear end of the mounting rack; and two guide posts are sleeved with compression springs between the front side of the mounting frame and the detection sliding block.
4. The elevator zipper two-end die-casting assembly line according to claim 1, wherein the cutting and embossing station transfer module is provided with a cutting and embossing station transfer module chuck A and a cutting and embossing station transfer module chuck B; and a first lifting cylinder is connected below the module chuck A for moving between the cutting and embossing stations and the module chuck B for moving between the cutting and embossing stations.
5. The elevator zipper two-end die-casting assembly line of claim 1, wherein the embossing station comprises an embossing holder, an embossing upper die cylinder, an embossing upper die, an embossing cylinder, and an embossing core; the upper patterning pressing die cylinder is fixed at the top of the patterning fixing seat, a piston rod on the upper patterning pressing die cylinder is vertically arranged downwards, and the upper patterning pressing die is fixed at the end of the piston rod on the upper patterning pressing die cylinder; the pattern making cylinder is arranged on the outer side of the pattern making fixed seat, and a piston rod on the pattern making cylinder horizontally points to the pattern making fixed seat; the pattern making core is fixed at the head of the piston rod on the pattern making cylinder.
6. The elevator zipper two-end die-casting assembly line of claim 1, wherein the die-casting sharp sprocket inter-station hoisting module comprises a hoisting frame, a second synchronous belt, a second motor, a fixed side clamping jaw and a rotating side clamping jaw; the second synchronous belt is arranged on the hoisting frame; the second motor is used for driving a second synchronous belt to move; the fixed side clamping jaw is arranged on one side of the hoisting frame; the rotating side clamping jaw is arranged on the second synchronous belt.
7. The riser zipper two-end die-casting assembly line of claim 1, wherein the de-sharpening station comprises a de-sharpening mounting base, a de-sharpening cylinder, an upper thimble, a de-sharpening blade, a cylinder, and a lower thimble; the sharp-removing cylinder is arranged at the top of the sharp-removing fixed seat, and a piston rod on the sharp-removing cylinder is vertically arranged downwards; the upper thimble is vertically fixed at the end part of a piston rod on the sharp-removing cylinder; the lower thimble is vertically fixed at the bottom of the sharpening fixed seat and corresponds to the upper thimble one by one; the hydro-cylinder is also fixed remove the top of sharp fixing base, and the vertical downward setting of hydraulic stem of hydro-cylinder, remove sharp cutting board and fix the tip of the hydraulic stem on the hydro-cylinder.
8. The riser zipper two-end die-casting assembly line of claim 1, wherein the sprocket zone pre-tensioning detection station comprises a pre-tensioning mechanism and a detection mechanism;
chain wheels are arranged on two sides of the chain wheel area pre-tensioning detection work station, and a plurality of clamping grooves are formed in the chain wheels at equal intervals; the pre-tensioning mechanism comprises a pair of pre-tensioning clamping blocks, a pre-tensioning cylinder and a tension sensor; the pair of pre-tensioning fixture blocks are symmetrically arranged on two sides of the pre-tensioning detection station in the chain wheel area, and first down-pressing air cylinders are arranged at the tops of the pre-tensioning fixture blocks; the pre-tensioning cylinder is horizontally arranged on the outer side of any pre-tensioning fixture block, and a piston rod on the pre-tensioning cylinder is fixedly connected with the first downward-pressing cylinder; the tension sensor is arranged on the pre-tensioning cylinder;
the detection mechanism is positioned at the rear side of the pre-tensioning mechanism; the detection mechanism comprises a pair of measuring clamping blocks, a measuring connecting seat, a connecting block jacking cylinder and weights; the pair of measuring clamping blocks are stacked on two sides of the chain wheel area pretensioning detection station and are positioned on the rear side of the pretensioning clamping block, and a second pressing cylinder is arranged at the top of each measuring clamping block; the measuring connecting seat is arranged on the outer side of any measuring clamping block, the connecting block is arranged on the measuring connecting seat in a sliding manner along the axial direction of the steel rope to be measured, and one end of the connecting block is connected with the second pressing cylinder; the other end of the connecting block is hung with the weight; a grating ruler is arranged on the measuring connecting seat; the connecting block jacking cylinder is fixed on the measuring connecting seat, and a piston rod on the connecting block jacking cylinder points to the second pressing cylinder.
9. The riser zipper two-end die-casting assembly line of claim 1, wherein the spring assembly station comprises a spring feed vibratory pan, a blow feed mechanism, an opening cylinder, a spring assembly station support, and a spring receiving hopper; the opening cylinder is horizontally fixed on the spring assembly work station bracket, and the spring receiving hopper is fixed at the end part of a piston rod on the opening cylinder; the spring feeding vibration disc conveys the springs into the spring receiving hopper through the blowing feeding mechanism.
10. The riser zipper two-end die-casting assembly line of claim 1, wherein a latch is provided at an outlet of the finished product blanking frame.
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| CN202111160989.9A CN113857453B (en) | 2021-09-30 | 2021-09-30 | Die-casting assembly line for two ends of lifter zipper |
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| CN202111160989.9A CN113857453B (en) | 2021-09-30 | 2021-09-30 | Die-casting assembly line for two ends of lifter zipper |
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| CN113857453B (en) | 2023-05-09 |
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