CN211683589U

CN211683589U - Zipper pull injection molding production line of zipper puller

Info

Publication number: CN211683589U
Application number: CN202020102054.XU
Authority: CN
Inventors: 杨旭林
Original assignee: Quanzhou Xulin Machinery Manufacturing Co ltd
Current assignee: Quanzhou Xulin Machinery Manufacturing Co ltd
Priority date: 2020-01-17
Filing date: 2020-01-17
Publication date: 2020-10-16
Anticipated expiration: 2030-01-17

Abstract

A zipper pull injection molding production line of zipper sliders comprises injection molding equipment, a zipper slider blanking device, a demolding device, a cutting device, an injection mold, a transmission device and a pulling device, wherein the zipper slider blanking device can clamp zipper sliders to be injected on the injection mold in sequence; the injection mold is arranged on the transmission device in a sliding mode, and the front side and the rear side of the transmission device respectively extend to the zipper head blanking device and the injection molding equipment; the demoulding device is arranged between the injection molding equipment and the zipper head blanking device, and the pulling device and the transmission device are arranged adjacently at the left and right sides; the pulling device can pull the zipper injection molding group to the cutting device to cut the zipper injection molding group into a plurality of formed zipper heads. The utility model improves the operation safety and has higher production efficiency compared with the traditional zipper-pull injection production line; in addition, the distance between the pulling device and the injection molding equipment can be reduced, the length of the whole piece injection molding production line in the front-back direction is reduced, and the occupied space required by the production line is reduced.

Description

Zipper pull injection molding production line of zipper puller

Technical Field

The utility model relates to a draw zipper head's production field, especially indicate a zipper head's pulling-on piece injection moulding line.

Background

In the traditional injection molding process, the zipper pull injection mold can only carry out zipper pull injection molding on one zipper puller at a time, and the efficiency is low. In order to improve the production efficiency, a plurality of manufacturers improve the zipper-pull injection mold, so that the zipper-pull injection mold can simultaneously inject the zipper pulls of a plurality of zipper sliders, and an automatic production line for injection molding of the zipper pulls is formed in order to further improve the production efficiency.

The production process adopted by the automatic production line for the injection molding of the pulling piece mainly comprises the following steps: firstly, the zipper head is conveyed to a zipper pull injection mold, then the zipper pull injection mold is conveyed to injection molding equipment to complete the injection molding operation of the zipper pull, and after the injection molding operation, the operations of demolding, cutting and the like are completed. In order to realize the production process, the zipper head blanking device and the injection molding equipment are often required to be arranged adjacently during design, and in practical application, if the distance between the zipper head blanking device and the injection molding equipment is too close, when the zipper head which is not regularly placed or inserted in place on the zipper piece injection mold is manually adjusted, the injection molding equipment has danger; if the distance between the zipper head blanking device and the injection molding equipment is too far, the problems of reduced production efficiency, improved energy consumption and the like exist.

SUMMERY OF THE UTILITY MODEL

The utility model provides a zipper head's pulling-on piece injection moulding line, its main aim at overcomes above-mentioned defect.

In order to solve the technical problem, the utility model adopts the following technical scheme:

an injection molding production line for zipper pulls of zipper sliders comprises injection molding equipment, a zipper slider blanking device, a demolding device, a cutting device, an injection mold, a transmission device and a pulling device,

the zipper head blanking device can convey the zipper heads to be injection-molded to the injection mold and clamp the zipper heads to be injection-molded on the injection mold in sequence;

the injection mold is arranged on the transmission device in a sliding mode, the front side and the rear side of the transmission device respectively extend to the zipper puller blanking device and the injection molding equipment, so that the injection mold can receive the zipper puller to be injection molded at the zipper puller blanking device and can slide to the injection molding equipment to injection mold the zipper puller to be injection molded into a zipper injection molding group;

the demolding device is arranged between the injection molding equipment and the zipper head discharging device and can grab the zipper injection molding group sliding to the injection mold between the injection molding equipment and the zipper head discharging device to the pulling device, and the pulling device and the transmission device are arranged adjacently left and right;

the pulling device can pull the zipper injection molding group to the cutting device to cut the zipper injection molding group into a plurality of formed zipper heads.

Furthermore, transmission includes the first linear guide rail that sets up along the fore-and-aft direction, but injection mold installs with sliding back and forth on the first linear guide rail to this injection mold's upside is equipped with a plurality of zipper head screens along the fore-and-aft direction interval, first linear guide rail can drive injection mold removes to arbitrary one the zipper head screens with zipper head unloader's lower discharge end is relative.

Furthermore, the number of the zipper head blanking devices is two, and the zipper head blanking devices are symmetrically arranged in the left and right direction; the left side and the right side of the injection mold are provided with a plurality of zipper head clamping positions which are arranged at intervals along the front-back direction, so that the two zipper head blanking devices can simultaneously convey zipper heads to be injected to the injection mold.

Furthermore, the pulling device comprises a sliding rail arranged along the front-back direction and a clamping mechanism capable of moving back and forth, the clamping mechanism can move to clamp the zipper injection molding group on the sliding rail, and the zipper injection molding group is pulled to the cutting device reversely to be cut.

Further, press from both sides and get mechanism and include along the second linear guide that the fore-and-aft direction set up and be used for pressing from both sides the finger cylinder of the zip fastener group of moulding plastics, the finger cylinder can be installed with sliding back and forth on the second linear guide.

Further, the demolding device comprises a lifting mechanism, a left and right traversing mechanism and a grabbing mechanism, wherein the lifting mechanism is used for driving the left and right traversing mechanism to move up and down, and the left and right traversing mechanism is used for driving the grabbing mechanism to move left and right; the grabbing mechanism can grab the zipper injection molding group on the injection mold and can release the zipper injection molding group on the grabbing mechanism onto the pulling device.

Further, the cutting device comprises a positioning and cutting mechanism, a formed zipper head accommodating groove and an injection molding accommodating groove, wherein the positioning and cutting mechanism is positioned above the formed zipper head accommodating groove, and the formed zipper head accommodating groove and the injection molding accommodating groove are staggered from front to back; the pulling device can pull the zipper injection molding group on the pulling device to the positioning and cutting mechanism to position and cut the zipper injection molding group into a molded zipper head and an injection molding piece.

Compared with the prior art, the utility model discloses the beneficial effect who produces lies in:

the utility model has simple structure and strong practicability, the front and the back sides of the transmission device are respectively extended to the zipper head blanking device and the injection molding equipment, and the demoulding device is arranged between the injection molding equipment and the zipper head blanking device, so that enough distance is left between the zipper head blanking device and the injection molding equipment, the operation safety of the production line is improved, and the production efficiency is higher compared with the traditional zipper piece injection molding production line; in addition, because the demoulding device is positioned between the injection molding equipment and the zipper head blanking device, the distance between the pulling device and the injection molding equipment can be reduced, so that the length of the whole zipper piece injection molding production line in the front-back direction is reduced, namely, the occupied space required by the production line is reduced.

Drawings

Figure 1 is the utility model discloses well pulling-on piece injection moulding line's top view.

Fig. 2 is the utility model discloses well pulling-on piece injection moulding line's structural schematic.

Fig. 3 is the utility model discloses well pulling-on piece injection moulding line's components of a whole that can function independently structure sketch map.

Fig. 4 is an enlarged schematic view of a in fig. 3.

Fig. 5 is an enlarged schematic view of B in fig. 3.

Fig. 6 is a schematic structural view of the middle zipper head blanking device of the present invention.

Fig. 7 is a first diagram of the split structure of fig. 6.

FIG. 8 is a schematic view of the slider pulling assembly of FIG. 7 pushing the slider hooking assembly.

Fig. 9 is a second diagram of the split structure of fig. 6.

Detailed Description

The following describes embodiments of the present invention with reference to the drawings.

Refer to fig. 1, 2, 3, 4, 5, 6, 7, 8, and 9. An injection molding production line for zipper pulls of zipper sliders comprises injection molding equipment 1, a zipper slider blanking device 2, a demolding device 3, a cutting device 4, an injection mold 5, a transmission device 6 and a pulling device 7,

the zipper head blanking device 2 can convey the zipper heads 100 to be injection-molded to the direction of the injection mold 5, and clamp the zipper heads 100 to be injection-molded on the injection mold 5 in sequence;

the injection mold 5 is arranged on the transmission device 6 in a sliding manner, and the front side and the rear side of the transmission device 6 respectively extend to the zipper puller blanking device 2 and the injection molding equipment 1, so that the injection mold 5 can receive the zipper puller 100 to be injection-molded at the zipper puller blanking device 2 and can slide to the injection molding equipment 1 to injection-mold the zipper puller 100 to be injection-molded into the zipper injection molding group 200;

the demolding device 3 is arranged between the injection molding equipment 1 and the zipper puller discharging device 2, and can grab the zipper injection molding group 200 sliding to the injection mold 5 between the injection molding equipment 1 and the zipper puller discharging device 2 to the pulling device 7, and the pulling device 7 and the transmission device 6 are arranged adjacently left and right;

the pulling device 7 can pull the zipper injection molding set 200 to the cutting device 4 to cut into a plurality of molded zipper sliders (not shown).

The utility model discloses a both sides extend to zipper head unloader 2 department and injection moulding equipment 1 department respectively around setting up transmission 6 to set up shedder 3 and lie in injection moulding equipment 1 and zipper head unloader 2 between, make and leave sufficient distance between zipper head unloader 2 and injection moulding equipment 1, improved the operational safety of this production line, and have higher production efficiency compared with traditional pulling-on piece injection moulding production line; in addition, because the demoulding device 3 is positioned between the injection molding equipment 1 and the zipper head blanking device 2, the distance between the pulling device 7 and the injection molding equipment 1 can be reduced, so that the length of the whole zipper piece injection molding production line in the front-back direction is reduced, namely, the occupied space required by the production line is reduced.

In particular, the method of manufacturing a semiconductor device,

refer to fig. 1, 2, and 3. The transmission device 6 includes a first linear guide 61 arranged along the front-back direction, the injection mold 5 is mounted on the first linear guide 61 in a front-back sliding manner, and a plurality of zipper head clamping positions 51 are spaced along the front-back direction on the upper side of the injection mold 5, and the first linear guide 61 can drive the injection mold 5 to move to any zipper head clamping position 51 opposite to the lower discharge end 201 of the zipper head discharging device 2. Wherein the content of the first and second substances,

the number of the zipper head blanking devices 2 is two, and the zipper head blanking devices are symmetrically arranged in the left and right direction; the left and right sides of the injection mold 5 are provided with a plurality of zipper head clamping positions 51 arranged at intervals along the front-back direction, so that the two zipper head blanking devices 2 can simultaneously convey the zipper heads 100 to be injected to the injection mold 5. When injection molding is performed in the injection molding device 1, two zipper sliders 100 to be injection molded on the two zipper slider blocking positions 51 which are symmetrical left and right can be injection molded together, and two zipper sliders 100 to be injection molded on the two zipper slider blocking positions 51 which are adjacent in the front and back can also be injection molded together, so that an integral zipper injection molding group 200 is formed.

Refer to fig. 1, 2, 3, and 4. The pulling device 7 comprises a slide rail 71 arranged along the front-back direction and a clamping mechanism 72 capable of moving back and forth, wherein the clamping mechanism 72 can move to clamp the zipper injection molding group 200 on the slide rail 71 and pull the zipper injection molding group 200 to the cutting device 4 in the opposite direction for cutting. Wherein the content of the first and second substances,

the gripping mechanism 72 includes a second linear guide 721 provided in the front-rear direction and a finger cylinder 722 for gripping the zipper injection molding set 200, and the finger cylinder 722 is slidably provided on the second linear guide 721 in the front-rear direction. When the zipper injection molding device is used specifically, the second linear guide rail 721 firstly drives the finger cylinder 722 to move to the slide rail 71, then the finger cylinder 722 is started to clamp the zipper injection molding set 200 placed on the upper side of the slide rail 71, then the second linear guide rail 721 drives the finger cylinder 722 to reversely move to the cutting device 4 for cutting, and after the cutting is finished, the finger cylinder 722 releases the injection molding 300 clamped on the cutting device.

Refer to fig. 1, 2, 3, and 5. The demoulding device 3 comprises a lifting mechanism 31, a left-right traversing mechanism 32 and a grabbing mechanism 33, wherein the lifting mechanism 31 is used for driving the left-right traversing mechanism 32 to move up and down, and the left-right traversing mechanism 32 is used for driving the grabbing mechanism 33 to move left and right; the gripping mechanism 33 is capable of gripping the zipper assembly 200 located on the injection mold 5 and releasing the zipper assembly 200 thereon onto the pulling device 7. Wherein the content of the first and second substances,

the lifting mechanism 31 is a lifting cylinder, the left and right traversing mechanism 32 is a linear slide rail arranged along the left and right direction, the grabbing mechanism 33 comprises two cylinders 331 arranged oppositely and two groups of contact pins 332, and the two groups of contact pins 332 are respectively arranged on the two cylinders 331. When in use, 1, the lifting mechanism 31 drives the left and right transverse moving mechanism 32 to descend to a proper position, and the two cylinders 331 drive the two groups of contact pins 332 to move oppositely to the zipper injection group 200 inserted into the injection mold 5; 2. the lifting mechanism 31 drives the left and right traversing mechanism 32 to ascend, and the zipper injection molding set 200 ascends along with the ascending; 3. the left-right transverse moving mechanism 32 drives the grabbing mechanism 33 to transversely move above the sliding rail 71; 4. the lifting mechanism 31 drives the left and right transverse moving mechanism 32 to descend until the zipper injection molding set 200 is erected on the upper side of the slide rail 71; 5. the two cylinders 331 drive the two groups of contact pins 332 to move back to leave the zipper injection molding group 200; 6. the elevating mechanism 31 returns to the original position, and the left and right traversing mechanisms 32 return to the original position.

Refer to fig. 1, 2, 3, and 4. The cutting device 4 comprises a positioning and cutting mechanism 41, a formed zipper head accommodating groove 42 and an injection molding piece accommodating groove 43, wherein the positioning and cutting mechanism 41 is positioned above the formed zipper head accommodating groove 42, and the formed zipper head accommodating groove 42 and the injection molding piece accommodating groove 43 are staggered front and back; the pulling device 7 can pull the zipper injection molding set 200 thereon to the positioning and cutting mechanism 41 for positioning and cutting into the molded zipper head and injection molding piece 300. Specifically, the slide rail 71 and the clamping mechanism 72 are respectively located at the front side and the rear side of the positioning and cutting mechanism 41, the finger cylinder 722 can pass through the positioning and cutting mechanism 41 and clamp the injection molding 300 of the zipper injection molding set 200 on the slide rail 71, and then the finger cylinder 722 pulls the zipper injection molding set 200 to move reversely to the positioning and cutting mechanism 41 for cutting, a specific cutting mode can be a cutter set capable of moving up and down, after the zipper injection molding set 200 is in place, that is, after the connection between the zipper head and the injection molding 300 reaches the cutter set, the cutter set acts to cut the zipper injection molding set 200, the cut zipper head falls into the formed zipper head accommodating groove 42, then the finger cylinder 722 pulls the zipper injection molding set 200 to continue to move in the reverse direction until the zipper injection molding set 200 is cut completely, the injection molding 300 reaches the upper part of the injection molding accommodating groove 43, the finger cylinder 722 releases, and the injection molding 300 falls into the injection molding accommodating groove 43.

Refer to fig. 1, 2, 3, 6, 7, 8, and 9. The zipper head blanking device 2 comprises a zipper head vibration disc 21, a zipper head slide rail 22 and a zipper head transmission mechanism 23, wherein an upper feeding end 202 of the zipper head slide rail 22 is connected with the zipper head vibration disc 21, a lower discharging end 201 corresponds to the position of the injection mold 5, and the zipper head transmission mechanism 23 can transmit a zipper head 100 (namely the zipper head 100 to be injected) positioned at the lower discharging end 201 of the zipper head slide rail to the injection mold 5; the slider sliding rail 22 comprises a sliding groove 221 and two sliding pieces 222 covered on the sliding groove 221, and when the slider 100 is conveyed on the slider sliding rail 22, the lower board of the slider 100 is accommodated between the sliding groove 221 and the two sliding pieces 222; the upper deck of the slider 100 is located above the two sliders 222; the connecting post of the slider 100 is located between two sliders 222. Through setting up two gleitbretters 222 that the lid was established on spout 221 for pull head 100 leaves pull head vibration dish 21 after, can slide along two gleitbretters 222, and it compares and seals the pull head in the technology that conveys in the guide rail in the tradition, has showing the smooth degree that has improved the pull head conveying, has reduced the probability that the pull head blocked in the guide rail, and the user can know directly perceivedly whether the pull head conveys smoothly, thereby can discover the trouble as early as possible. The concrete structure is as follows,

refer to fig. 1, 2, 3, 6, 7, 8, and 9. The sliding piece 222 includes an inclined portion 2221, a horizontal portion 2222, and an arc portion 2223, wherein the upper end of the inclined portion 2221 is connected to the slider vibration plate 21, and the lower end is transitionally connected to the horizontal portion 2222 through the arc portion 2223. In use, after the slider in the slider vibration plate 21 is conveyed to the inclined portion 2221, the slider slides down along the inclined portion 2221 to the arc portion 2223, and then slides down along the arc portion 2223 to be erected on the horizontal portion 2222.

The two sliding pieces 222 are parallel to each other, and a channel 2224 for the connecting column of the slider 100 to pass through is formed between the two sliding pieces 222, i.e. the connecting column of the slider 100 can slide down along the channel 2224.

Refer to fig. 1, 2, 3, 6, 7, 8, and 9. The slider conveying mechanism 23 comprises a slider hooking component 231 and a slider pulling component 232, and the slider pulling component 232 is in transmission control connection with the slider hooking component 231 so as to drive the slider hooking component 232 to move back and forth between the lower discharging end 201 of the slider slide rail 22 and the injection mold 5; the slider hooking component 231 can be inserted into the slider 100 at the lower discharging end 201 of the slider sliding rail 22 to push the slider from the lower discharging end 201 to the injection mold 5. In the specific design, the first linear guide rail 61 can drive the injection mold 5 to move to any one of the zipper head clamping positions 51 opposite to the lower discharging end 201, and the distance between the zipper head clamping position 51 and the lower discharging end 201 should be designed to be about 1cm, so that the slider hooking component 231 can pull the slider 100 from the lower discharging end 201 to the zipper head clamping position 51 of the injection mold 5. The clamping device in the traditional zipper piece injection production line needs to clamp and clamp the zipper head and then moves to the position where the zipper head is clamped on an injection mold, so that the space between the clamping position of the zipper head and the lower discharge end of the injection mold is generally designed to be 3-5cm, and the design of the scheme can further reduce the space occupied by the production line.

The slider pulling assembly 232 comprises a first lifting cylinder 2321, a fixed seat 2322 and a first inclined slider 2323, and the slider hooking assembly 231 comprises a second inclined slider 2311; the first inclined sliding block 2323 is longitudinally slidably embedded in the fixed seat 2322, the upper end of the first inclined sliding block 2323 is connected with the driving end of the first lifting cylinder 2321, and the lower end of the first inclined sliding block 2323 is provided with a lower inclined surface 2324; the second inclined slider 2311 is embedded in the fixed seat 2322 in a transverse sliding manner, and the second inclined slider 2311 is provided with a side inclined surface 2316 which is abutted against the lower inclined surface 2324; a horizontally arranged spring (not shown) is further connected between the slider hooking component 231 and the fixed seat 2322, and when the slider hooking component is specifically designed, the spring is connected between the fixed seat 2322 and the positioning block 2312/the second inclined slider 2311.

The slider hooking component 231 further comprises a positioning block 2312 arranged on the second inclined slider 2311, a second lifting cylinder 2313 arranged on the positioning block 2312 and an inserting rod 2314, the upper end of the inserting rod 2314 is connected with the driving end of the second lifting cylinder 2313, the lower end of the inserting rod 2314 can be inserted into the slider 100 positioned at the lower discharging end 201 of the slider sliding rail 22, a longitudinal sliding hole 2315 is formed in the positioning block 2312, and the inserting rod 2314 can be embedded into the longitudinal sliding hole 2315 in a vertically sliding mode, so that the accuracy of inserting the inserting rod 2314 into the slider is improved, the stress of the inserting rod 2314 is reduced, and the service life of the slider hooking component is prolonged. In this embodiment, the specific insertion position of the insert bar 2314 is located in a pull tab pull ring on the upper side of the upper deck of the slider 100, and when the slider pulling assembly 232 drives the slider hooking assembly 231 to move transversely, the insert bar 2314 can apply force to the pull tab pull ring, so as to pull the slider 100 to the injection mold 5.

The slider transfer mechanism 23 is used in the following steps: 1. the slider hooking assembly 231 is started, and the second lifting cylinder 2313 drives the insert rod 2314 to descend until the insert rod is inserted into the slider 100; 2. the slider pulling assembly 232 is started, the first lifting cylinder 2321 drives the first inclined slider 2323 to descend along the fixed seat 2322, so that the lower inclined surface 2324 of the first inclined slider 2323 acts on the side inclined surface 2316 of the second inclined slider 2311, the second inclined slider 2311 moves transversely along the fixed seat 2322, and the positioning block 2312 arranged on the second inclined slider 2311 drives the second lifting cylinder 2313 to move transversely until the slider 100 is clamped in the slider clamping position 51 of the injection mold 5; 3. the second lifting cylinder 2313 drives the insert rod 2314 to ascend and return to the original position so as to leave the slider 100; 4. the first lifting cylinder 2321 drives the first inclined slider 2323 to ascend and return to the original position, and the second inclined slider 2311 returns to the original position under the action of the spring.

Refer to fig. 1, 2, 3, 6, 7, 8, and 9. The lower discharging end 201 of the slider sliding rail 22 is further provided with an elastic limiting mechanism 24, the slider 100 sliding to the lower discharging end 201 can be constrained at the elastic limiting mechanism 24, and the slider conveying mechanism 23 can drive the slider 100 to leave the elastic limiting mechanism 24. Wherein the content of the first and second substances,

the elastic limiting mechanism 24 includes two stoppers 241 respectively connected to the lower discharging end 201 by elastic members (not shown), and the slider 100 sliding down to the lower discharging end 201 can be restrained between the two stoppers 241.

More specifically, the slider rail 22 further includes two guide blocks 223 fixedly mounted on the upper sides of the two sliding pieces 222, respectively, the two stoppers 241 are slidably embedded on the two guide blocks 223 through elastic members, respectively, and the slider 100 can slide to the upper board between the two guide blocks 223. The opposite sides of the two stoppers 241 are respectively matched with the two sides of the boarding plate of the slider 100, so that when the slider slides to a position between the two stoppers 241, the slider can be just blocked by the two stoppers 241, then the slider hooking component 231 descends to a position where the slider 100 is inserted, the slider pulling component 232 starts to pull the slider, the two stoppers 241 are pushed to separate towards the two sides, the slider 100 is separated from the elastic limiting mechanism 24, and after the slider 100 moves to the injection mold 5, the two stoppers 241 return to the original state to restrain the next slider which is conveyed to the lower discharging end 201.

The above-mentioned be the utility model discloses a concrete implementation way, nevertheless the utility model discloses a design concept is not limited to this, and the ordinary use of this design is right the utility model discloses carry out immaterial change, all should belong to the act of infringement the protection scope of the utility model.

Claims

1. The utility model provides a draw zipper head's pulling-on piece injection moulding line, includes injection moulding equipment, draws zipper head unloader, shedder, cutting device, injection mold, transmission, pulling device, its characterized in that:

2. The zipper pull injection molding production line of a zipper head as set forth in claim 1, wherein: the transmission device comprises a first linear guide rail arranged along the front-back direction, the injection mold is arranged on the first linear guide rail in a front-back sliding mode, a plurality of zipper head clamping positions are arranged on the upper side of the injection mold along the front-back direction at intervals, the first linear guide rail can drive the injection mold to move to any position, and the zipper head clamping positions are opposite to the lower discharge end of the zipper head discharging device.

3. The zipper pull injection molding production line of a zipper head according to claim 2, wherein: the number of the zipper head blanking devices is two, and the zipper head blanking devices are symmetrically arranged in the left-right direction; the left side and the right side of the injection mold are provided with a plurality of zipper head clamping positions which are arranged at intervals along the front-back direction, so that the two zipper head blanking devices can simultaneously convey zipper heads to be injected to the injection mold.

4. The zipper pull injection molding production line of a zipper head as set forth in claim 1, wherein: the pulling device comprises a sliding rail arranged along the front-back direction and a clamping mechanism capable of moving back and forth, the clamping mechanism can move to clamp the zipper injection molding group on the sliding rail, and the zipper injection molding group is pulled to the cutting device reversely to be cut.

5. The zipper pull injection molding production line of a zipper head according to claim 4, wherein: the clamping mechanism comprises a second linear guide rail arranged along the front-back direction and a finger cylinder used for clamping the zipper injection molding group, and the finger cylinder can be arranged on the second linear guide rail in a front-back sliding mode.

6. The zipper pull injection molding production line of a zipper head as set forth in claim 1, wherein: the demolding device comprises a lifting mechanism, a left and right traversing mechanism and a grabbing mechanism, wherein the lifting mechanism is used for driving the left and right traversing mechanism to move up and down, and the left and right traversing mechanism is used for driving the grabbing mechanism to move left and right; the grabbing mechanism can grab the zipper injection molding group on the injection mold and can release the zipper injection molding group on the grabbing mechanism onto the pulling device.

7. The zipper pull injection molding production line of a zipper head as set forth in claim 1, wherein: the cutting device comprises a positioning and cutting mechanism, a formed zipper head accommodating groove and an injection molding accommodating groove, wherein the positioning and cutting mechanism is positioned above the formed zipper head accommodating groove, and the formed zipper head accommodating groove and the injection molding accommodating groove are staggered from front to back; the pulling device can pull the zipper injection molding group on the pulling device to the positioning and cutting mechanism to position and cut the zipper injection molding group into a molded zipper head and an injection molding piece.