Three-in-one machine for nylon closed invisible zipper

Abstract

The invention discloses a nylon closed invisible zipper three-in-one machine which comprises a machine frame, a tape feeding device, a tape rotating device, a clamp device, a head penetrating device, a top stopper melting device and a tape discharging device, the tape feeding device, the tape rotating device, the head penetrating device, the top stopper melting device and the tape discharging device are sequentially arranged on the machine frame, and a zipper tape is fed in through the tape feeding device. After being cut off, the zipper tape is transferred to the clamp device through the tape rotating device, after being clamped by the clamp device, the zipper tape passes through the head penetrating device to be subjected to head penetrating, and enters the tape discharging device after being punched with a top stopper through the top stopper melting device, and a stacking and overturning device is arranged between the head penetrating device and the top stopper melting device. The zipper tape penetrates through the stacking and overturning device to be stacked and overturned after penetrating through the zipper tape, and then the zipper tape is fed into the top stopper melting device to be printed with top stoppers. According to the three-in-one machine for the nylon closed invisible zipper, through the arrangement of the stacking and overturning device, the zipper teeth of the zipper tape can be effectively overturned and then are stopped, and the good invisible effect is achieved when the zipper tape is pulled up.

Description

Technical Field

[0001] The invention relates to a three-in-one machine, and more particularly to a nylon closed invisible zipper three-in-one machine. Background Art

[0002] A zipper consists of two zipper tapes, a slider and corresponding chain teeth on the zipper tapes. The upper and lower ends of the zipper tapes can be set with upper and lower stops respectively according to different usage occasions. Zippers are divided into metal zippers, nylon zippers, resin zippers, etc. according to the materials.

[0003] In the related art, the production process of nylon zippers includes a cutting process, a threading process, and a top stop process. However, in existing equipment, each process is basically performed separately by different equipment, which is cumbersome to operate and has low production efficiency.

[0004] Therefore, in the prior art, there is an invention patent with announcement number CN110623378B and the name of nylon zipper three-in-one machine, which discloses that the feeding, belt transfer, head insertion, top stop melting and discharging operations of the zipper tape are realized by means of a feeding device, a cutting device, a belt transfer device, a head insertion device, a top stop melting device and a discharging device. However, the invention patent directly performs the top stop melting operation after the head insertion, while the invisible zipper needs to be stacked and turned over for the zipper tape after the head insertion is completed, and then the top stop melting operation is performed to achieve the invisible effect, while the above-mentioned prior art directly performs the top stop melting operation. It can be seen that the nylon zipper three-in-one machine in the above-mentioned prior art is not suitable for the production of nylon invisible zippers. Summary of the invention

[0005] In view of the shortcomings of the prior art, the object of the present invention is to provide a nylon closed invisible zipper three-in-one machine which can be well applied to the processing of nylon invisible zippers.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a nylon closed invisible zipper three-in-one machine, comprising a frame, a tape feeding device, a tape transfer device, a clamp device, a head threading device, a melting stop device and a tape discharging device, wherein the tape feeding device, the tape transfer device, the head threading device, the melting stop device and the tape discharging device are arranged on the frame in sequence, the zipper tape is fed in through the tape feeding device, and after being cut, it is transferred to the clamp device through the tape transfer device, and after being supported by the clamp device, the zipper tape passes through the head threading device for threading, and the melting stop device is stopped before entering the tape discharging device, and a stacking and flipping device is provided between the head threading device and the melting stop device, and after the zipper tape is threaded in, it passes through the stacking and flipping device for threading and flipping, and then is fed into the melting stop device for being stopped.

[0007] As a further improvement of the present invention, the coding and flipping device includes a flipping upper mold and a flipping lower mold. The lower end of the flipping upper mold is provided with an upper flipping groove, and the upper end of the flipping lower mold is provided with a lower flipping groove. The upper flipping rubbing groove and the lower flipping groove are arranged opposite to each other to form a flipping channel for driving the zipper belt chain teeth to flip.

[0008] As a further improvement of the present invention, the flip upper mold comprises an upper mold base and an upper module, the upper flip groove is arranged on the lower end surface of the upper module, the upper mold base is provided with a lifting groove, a lifting bar is fixed on the upper end of the upper module, the lifting bar can be slidably installed in the lifting groove, an upper limit rod and a lower limit rod distributed up and down are fixed on the side of the lifting bar facing away from the bottom of the lifting groove, a U-shaped plate is fixed at the middle position of the notch of the lifting groove, and interference bolts are fixed on both side walls of the U-shaped plate, and the U-shaped plate is located between the upper limit rod and the lower limit rod, so as to limit the descending position of the lifting bar when the upper limit rod abuts against the interference bolts on the side walls of the U-shaped plate, and limit the rising position of the lifting bar when the lower limit rod abuts against the interference bolts on the side walls of the U-shaped plate.

[0009] As a further improvement of the present invention, a buffer is fixed to the position of the lifting slot near its upper end. The buffer is fixed to the lifting slot through an angle plate, and the buffer head is arranged downward. The lower side of the angle plate is provided with a U-shaped groove for the upper limit rod to slide into.

[0010] As a further improvement of the present invention, the upper flip groove is a long strip structure with a semicircular cross-section. One end of the upper flip groove extends to the side of the upper module to form a semicircular opening for the zipper tape to enter, and the other end extends to the lower end surface of the upper module so that there is an inclined transition between the two ends of the upper flip groove.

[0011] As a further improvement of the present invention, the flip lower mold includes a lower mold base and a lower module. A bottom plate is fixed to the lower end of the lower mold base, a lifting cylinder is provided on the bottom plate, a lifting channel is provided on the lower mold base, the lower module can be slidably arranged in the lifting channel, the lower flip groove is provided at the upper end of the lower module, and the lower end of the lower module is connected to the push rod of the lifting cylinder.

[0012] As a further improvement of the present invention, the threading device includes a zipper head vibration plate, a zipper head track, a zipper head conveying mechanism and a threading mechanism, and the threading mechanism is located between the belt transfer device and the melt stop device to receive the zipper head conveyed by the zipper head conveying mechanism, and then install the zipper head threader on the zipper tape clamped by the clamp device.

[0013] As a further improvement of the present invention, the zipper head conveying mechanism includes a conveying base, a conveying slider and a conveying robot. The conveying base is fixedly installed at the lower end of the zipper head track, and the conveying slider can be slidably installed on the conveying base. The conveying base is also provided with a receiving seat. The conveying robot is installed on the conveying slider to be driven by the conveying slider to slide to the receiving seat or to slide to the head threading mechanism. The receiving seat is at the output end of the zipper head track to receive the zipper head sent out by the zipper head track, so as to be clamped by the conveying robot and then conveyed to the head threading mechanism.

[0014] As a further improvement of the present invention, the belt transfer device includes a belt transfer base, a rotating motor and a belt transfer clamp. The body of the rotating motor is fixedly installed on the belt transfer base. The belt transfer clamp is in the shape of a long strip, and the middle part is fixedly installed on the rotating shaft of the rotating motor. The two ends of the belt transfer clamp are respectively provided with claws for clamping the zipper tape.

[0015] As a further improvement of the present invention, the clamp includes a clamp base, an upper clamp, a lower clamp and a clamp cylinder, the clamp base is fixedly mounted on the end of the rotating belt clamp, the lower clamp is fixedly mounted on the clamp base, the upper clamp can be raised and lowered on the clamp base and is above the lower clamp, the cylinder body of the clamp cylinder is fixedly mounted on the clamp base, and the upper clamp is fixedly mounted on the push rod of the clamp cylinder.

[0016] The beneficial effect of the present invention is that through the arrangement of the tape feeding device, the tape transfer device, the clamp device, the head threading device, the top stop melting device and the tape discharging device, the tape feeding, tape transfer, head threading, top stop melting and tape discharging can be effectively realized automatically, and by arranging the assembly flipping device between the head threading device and the top stop melting device, the chain teeth of the zipper tape after the head threading can be flipped, and after the flipping is completed, the top stop is applied so that the chain teeth remain in the flipped state, thereby effectively realizing the production of invisible zippers. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is the overall structure diagram of the nylon closed invisible zipper three-in-one machine of the present invention;

[0018] Figure 2 for Figure 1 The overall structure diagram of the medium-sized loading turning device;

[0019] Figure 3 for Figure 2 The overall structure diagram of the middle flip upper die;

[0020] Figure 4 for Figure 2 The overall structure diagram of the middle flip lower die;

[0021] Figure 5 for Figure 1The overall structure diagram of the middle head penetration device;

[0022] Figure 6 for Figure 5 The overall structure diagram of the middle zipper head conveying mechanism;

[0023] Figure 7 for Figure 1 The overall structure diagram of the transfer belt device;

[0024] Figure 8 for Figure 7 The overall structure of the middle clamp. DETAILED DESCRIPTION

[0025] The present invention will be further described below in detail with reference to the embodiments shown in the accompanying drawings.

[0026] Reference Figure 1 As shown, a nylon closed invisible zipper three-in-one machine of this embodiment includes a frame 1, a tape feeding device 2, a tape transfer device 3, a clamp device 4, a head insertion device 5, a melting stop device 6 and a tape discharging device 7. The tape feeding device 2, the tape transfer device 3, the head insertion device 5, the melting stop device 6 and the tape discharging device 7 are arranged on the frame 1 in sequence. The zipper tape is fed in through the tape feeding device 2, and after being cut, it is transferred to the clamp device 4 through the tape transfer device 3. After the clamp device 4 is supported, the zipper tape passes through the head insertion device 5 for head insertion, and the melting stop device 6 is stopped before entering the tape discharging device 7. The characteristic is that: the head insertion device A coding and flipping device 8 is provided between the device 5 and the melting top stop device 6. After the zipper tape is threaded through the coding and flipping device 8, it is coded and flipped, and then sent to the melting top stop device 4 to be stopped. In this way, in the process of processing the nylon invisible zipper, the tape is first fed, and then the zipper tape is cut, and after the cutting is completed, it is sent to the threading device 5 for threading, and after the threading is completed, the zipper tape is coded and flipped, and after the flipping is completed, the top stop processing is performed through the melting top stop device 6, so that the chain teeth can be effectively hidden after the zipper tape is pulled up, thereby realizing the processing of the nylon invisible zipper.

[0027] Further, see Figure 2 The coding and flipping device 8 used in the present embodiment includes a flip upper mold 81 and a flip lower mold 82. An upper flip groove 83 is provided at the lower end of the flip upper mold 81, and a lower flip groove 84 is provided at the upper end of the flip lower mold 82. The upper flip rubbing groove 83 and the lower flip groove 84 are arranged opposite to each other to form a flipping channel for driving the zipper chain elements to flip. In this way, the chain elements can be flipped simply and quickly by forming a flipping channel composed of the upper flip rubbing groove 83 and the lower flip groove 84 when the zipper tape passes through.

[0028] Further, see Figure 3As shown, the present embodiment provides the following flip upper mold 81 structure, the flip upper mold 81 includes an upper mold base 811 and an upper module 812, the upper flip groove 83 is provided on the lower end surface of the upper module 812, the upper mold base 811 is provided with a lifting groove 813, the upper end of the upper module 812 is fixed with a lifting bar 814, the lifting bar 814 is slidably installed in the lifting groove 813, the lifting bar 814 is fixed with an upper limit rod 815 and a lower limit rod 816 distributed up and down on the side of the lifting bar 814 facing away from the bottom of the lifting groove 813, and the notch of the lifting groove 813 is fixed with a U The U-shaped plate is provided with a stop bolt on both side walls of the U-shaped plate, and the U-shaped plate is located between an upper limit rod 815 and a lower limit rod 816, so as to limit the descending position of the lifting strip 814 when the upper limit rod 815 abuts against the stop bolt on the side wall of the U-shaped plate, and limit the ascending position of the lifting strip 814 when the lower limit rod 816 abuts against the stop bolt on the side wall of the U-shaped plate. The upper flip mold 81 with the above structure can realize that the upper flip groove 83 has a certain displacement space, so as to avoid the situation that the lower end of the flip upper mold 81 and the upper end of the flip lower mold 82 collide and cause damage when the zipper tape is initially passed.

[0029] Furthermore, in order to further enhance the buffering effect between the flip upper mold 81 and the flip lower mold 82, a buffer 817 is fixed to the position of the notch of the lifting groove 813 near its upper end. The buffer 817 is fixedly installed on the notch of the lifting groove 813 through an angle plate, and the buffer head is set downward. The lower side of the angle plate is provided with a U-shaped groove for the upper limit rod 815 to slide into. The buffer 817 can effectively enhance the buffering effect on the upper limit rod 815 and further protect the structure of the upper module 812. The U-shaped groove is used to provide the sliding of the upper limit rod 815 during the buffering process, and at the same time limit the left and right positions of the upper limit rod 815.

[0030] Furthermore, the following upper flip groove 83 structure is adopted in the present embodiment, and the upper flip groove 83 is a long strip structure with a semicircular cross-section. One end of the upper flip groove 83 extends to the side of the upper module 812 to form a semicircular opening for the zipper tape to enter, and the other end extends to the lower end surface of the upper module 812, so that there is an inclined transition between the two ends of the upper flip groove 83. Therefore, the inclined transition groove bottom in the upper flip groove 83 can be used to realize the flipping of the zipper tape chain teeth, without the need for an additional robot or other mechanism to drive the chain teeth to flip.

[0031] Further, see Figure 4As shown, the following structure of a flip lower mold 82 is provided in this embodiment, and the flip lower mold 82 includes a lower mold base 821 and a lower module 822. A bottom plate is fixed to the lower end of the lower mold base 821, and a lifting cylinder 824 is provided on the bottom plate. A lifting channel 825 is provided on the lower mold base 821, and the lower module 822 is slidably arranged in the lifting channel 825. The lower flip groove 84 is provided at the upper end of the lower module 822, and the lower end of the lower module 822 is connected to the push rod of the lifting cylinder 824, thereby constructing a self-lifting lower module 822 structure.

[0032] Furthermore, the lower flip groove 84 of the present embodiment adopts the following structure: the lower flip groove 84 is in a U-shaped structure, a flip step 841 is provided on the inner side wall of the lower flip groove 84, and the inner side wall above the step surface of the flip step 841 serves as a guide edge, and the end of the guide edge facing the upper stop device 6 is formed with an inclined surface inclined toward the center of the lower flip groove 84, and one end of the flip step 841 of the piercing device 5 is provided with a climbing slope 842. With the above structure, when the flip upper mold 81 and the flip lower mold 82 are assembled, the outer side edge of the upper flip groove 83 and the lower flip groove The outer edge of 84 abuts against the outer edge of the zipper belt, and the chain tooth part of the zipper belt on one side after passing through the head enters from the climbing slope 842. When entering the top of the climbing slope 842, it will contact the bottom of the upper flip groove 83. Then, when continuing to move forward, the arc surface and the inclined surface of the bottom of the flip groove 83 will drive the chain tooth to flip downward, and finally flip along the guide edge to be perpendicular to the belt surface, and then directly enter between the upper and lower molds of the melting stop device 6 to complete the stop operation, so as to maintain the flip position of the chain tooth. Compared with the method in the prior art, this can be effectively applied to the production of invisible zipper belts.

[0033] Further, see Figure 5 As shown, the threading device 5 of this embodiment includes a zipper head vibration plate 51, a zipper head track 52, a zipper head conveying mechanism 53 and a threading mechanism 54. The threading mechanism 54 is located between the belt transfer device 3 and the melting stop device 6, so that after receiving the zipper head conveyed by the zipper head conveying mechanism 53, the zipper head is threaded and installed on the zipper tape clamped by the clamp device 4. In this way, the zipper head can be sent into the zipper head conveying mechanism 53 through the zipper head vibration plate 51 through the zipper head track 52, and then the zipper head is conveyed to the threading mechanism 54 through the zipper head conveying mechanism 53, so as to realize the threading operation of the zipper head. The threading mechanism 54 in this embodiment adopts an upper mold and a lower mold combination. When threading, the zipper head is first placed on the upper end of the lower mold, and then the upper mold and the lower mold are connected. After that, the zipper tape is clamped by the clamp device 4 and passes through, so that the zipper tape can be separated from the left and right while threading. Figure 6As shown, the zipper head conveying mechanism 53 in this embodiment includes a conveying base 531, a conveying slider 532 and a conveying manipulator 534. The conveying base 531 is fixedly installed at the lower end of the zipper head track 52, and the conveying slider 532 is slidably installed on the conveying base 531. The conveying base 531 is also provided with a receiving seat 535. The conveying manipulator 534 is installed on the conveying slider 532 to be driven by the conveying slider 532 to slide to the receiving seat 535 or slide to the head insertion mechanism 54. The receiving seat 535 is in The output end of the zipper head track 52 receives the zipper head sent out by the zipper head track 52, and is clamped by the conveying robot 534 and then conveyed to the head insertion mechanism 54. In this way, the zipper head can be simply and quickly sent out from the zipper head vibration plate 51 and then input into the head insertion mechanism 54. In addition, the conveying robot 534 is installed on the conveying base 531 through an active telescopic rod, not shown in the figure. The corresponding telescopic rod can be realized by a cylinder or a screw rod, which can drive the conveying robot 534 to slide to the receiving seat 535 or to slide to the head insertion mechanism 54.

[0034] Further, see Figure 7 As shown, the following belt transfer device 3 is provided in this embodiment, including a belt transfer base 31, a rotating motor 32 and a belt transfer clamping plate 33. The body of the rotating motor 32 is fixedly mounted on the belt transfer base 31. The belt transfer clamping plate 33 is in the shape of an elongated strip, and the middle part is fixedly mounted on the rotating shaft of the rotating motor 32. The two ends of the belt transfer clamping plate 33 are respectively provided with clamping claws 34 for clamping the zipper tape. During the belt transfer operation, the zipper tape delivered by the tape feeding device 2 is first clamped by a clamping claw 34, and is cut by the tape feeding device 2. Then, the rotating motor 32 is operated to rotate the belt transfer clamping plate 33, so as to transfer the cut zipper tape to the clamp device 4, and then the clamp device 4 clamps and sends it away. In this way, the continuous transfer of the zipper tape can be effectively realized, rather than the gradual and intermittent transfer of the zipper tape, thereby increasing the overall operation efficiency. Figure 8 As shown, the clamp 34 includes a clamp base 341, an upper clamp plate 342, a lower clamp plate 343 and a clamp cylinder 344. The clamp base 341 is fixedly mounted on the end of the rotating clamp plate 33, and the lower clamp plate 343 is fixedly mounted on the clamp base 341. The upper clamp plate 342 can be lifted and lowered on the clamp base 341 and is above the lower clamp plate 343. The cylinder body of the clamp cylinder 344 is fixedly mounted on the clamp base 341, and the upper clamp plate 342 is fixedly mounted on the push rod of the clamp cylinder 344. Through the arrangement of the above structure, the upper clamp plate 342 and the lower clamp plate 343 can be driven to close and separate through the action of the clamp cylinder 344, thereby clamping or releasing the zipper tape.

[0035] Furthermore, in order to ensure the reliability of the relative displacement between the upper clamping plate 342 and the lower clamping plate 343 in this embodiment, the two opposite sides of the clamping claw base 341 are fixed with lifting blocks 345, and the two lifting blocks 345 are arranged at a distance from each other. The lower clamping plate 343 is fixedly installed on the side of the lifting block 345 facing away from the clamping claw base 341, and the cylinder body of the clamping claw cylinder 344 is fixedly installed on the side of the lifting block 345 away from the lower clamping plate 343. Notches are opened on the two sides of the upper clamping plate 342, and the lifting blocks 345 are in the notches to limit the horizontal movement of the upper clamping plate 342, so that the upper clamping plate 342 can be further increased. 42 reliability during movement. Furthermore, a positioning cylinder 346 is fixedly installed at a position of the clamp base 341 near the clamp cylinder 344. The cylinder body of the positioning cylinder 346 is fixedly installed on the clamp base 341. After the push rod passes through the clamp base 341, a positioning column 347 is coaxially sleeved. The end of the positioning column 347 abuts against the lower clamp plate 343, and the positioning column 347 is arranged through the upper clamp plate 342. In this way, through the arrangement of the positioning column 347, on the one hand, the zipper tape can be effectively positioned, and on the other hand, the positioning column 347 can also be used to limit the movement of the upper clamp plate 342 in the horizontal direction.

[0036] Furthermore, in this embodiment, one end of the upper clamping plate 342 and the lower clamping plate 343 are both provided with chamfers, and the two chamfers constitute a guiding surface structure for guiding the zipper tape to enter between the upper clamping plate 342 and the lower clamping plate 343. The lower side surface of the upper clamping plate 342 is provided with a receiving groove connecting the two ends of the upper clamping plate 342. When the upper clamping plate 342 and the lower clamping plate 343 clamp the zipper tape, the chain teeth are in the receiving groove. Through the above structure, the upper clamping plate 342 and the lower clamping plate 343 can be effectively used to clamp the zipper tape, and at the same time, it can also avoid the situation where the chain teeth are damaged due to excessive clamping force.

[0037] In summary, the three-in-one machine of this embodiment uses the encoding and flipping device 8 to flip the chain teeth after the threading device 5 completes the threading, and then the upper stop processing is realized by the melting upper stop device 6 to position the flipped chain teeth, thereby realizing the automated processing of the invisible zipper.

[0038] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A nylon closed invisible zipper three-in-one machine, comprising a frame (1), a tape feeding device (2), a tape transfer device (3), a clamp device (4), a threading device (5), a melting stop device (6) and a tape discharging device (7), wherein the tape feeding device (2), the tape transfer device (3), the threading device (5), the melting stop device (6) and the tape discharging device (7) are sequentially arranged on the frame (1), the zipper tape is fed in through the tape feeding device (2), and after being cut, is transferred to the clamp device (4) through the tape transfer device (3), and after being supported by the clamp device (4), the zipper tape passes through the threading device (5) for threading, and is stopped by the melting stop device (6) before entering the tape discharging device (7), wherein the characteristics are as follows: A stacking and flipping device (8) is provided between the threading device (5) and the melting and stopping device (6). After the zipper tape is threaded, it passes through the stacking and flipping device (8) for stacking and flipping, and then is sent to the melting and stopping device (4) for top stop.

2. The nylon closed invisible zipper three-in-one machine according to claim 1, characterized in that: The assembly and reversing device (8) comprises an upper reversing die (81) and a lower reversing die (82). An upper reversing groove (83) is provided at the lower end of the upper reversing die (81), and a lower reversing groove (84) is provided at the upper end of the lower reversing die (82). The upper reversing groove (83) and the lower reversing groove (84) are arranged opposite to each other to form a reversing channel for driving the zipper belt chain elements to reversal.

3. The nylon closed invisible zipper three-in-one machine according to claim 2, characterized in that: The flip upper mold (81) comprises an upper mold base (811) and an upper mold block (812); the upper flip groove (83) is provided on the lower end surface of the upper mold block (812); a lifting groove (813) is provided on the upper mold base (811); a lifting bar (814) is fixed to the upper end of the upper mold block (812); the lifting bar (814) is slidably installed in the lifting groove (813); and an upper limit rod (814) distributed in an upper and lower manner is fixed on the side of the lifting bar (814) facing away from the bottom of the lifting groove (813). 15) and a lower limiting rod (816), a U-shaped plate is fixed at the middle position of the notch of the lifting groove (813), and both side walls of the U-shaped plate are fixed with abutment bolts. The U-shaped plate is located between the upper limiting rod (815) and the lower limiting rod (816), so that when the upper limiting rod (815) abuts against the abutment bolts on the side wall of the U-shaped plate, the lowering position of the lifting bar (814) is limited, and when the lower limiting rod (816) abuts against the abutment bolts on the side wall of the U-shaped plate, the rising position of the lifting bar (814) is limited.

4. The nylon closed invisible zipper three-in-one machine according to claim 3, characterized in that: A buffer (817) is fixed to the notch of the lifting slot (813) near its upper end. The buffer (817) is fixedly mounted on the notch of the lifting slot (813) via an angle plate, with the buffer head facing downward. A U-shaped groove is provided on the lower side of the angle plate for the upper limit rod (815) to slide into.

5. The nylon closed invisible zipper three-in-one machine according to claim 4, characterized in that: The upper flip groove (83) is in the form of a long strip structure with a semicircular cross section. One end of the upper flip groove (83) extends to the side of the upper module (812) to form a semicircular opening for the zipper tape to enter, and the other end extends to the lower end surface of the upper module (812) so that there is an inclined transition between the two ends of the upper flip groove (83).

6. The nylon closed invisible zipper three-in-one machine according to claims 2 to 5, characterized in that: The flip lower mold (82) comprises a lower mold base (821) and a lower mold block (822); a bottom plate is fixed at the lower end of the lower mold base (821); a lifting cylinder (824) is provided on the bottom plate; a lifting channel (825) is provided on the lower mold base (821); the lower mold block (822) is slidably arranged in the lifting channel (825); the lower flip groove (84) is provided at the upper end of the lower mold block (822); and the lower end of the lower mold block (822) is connected to the push rod of the lifting cylinder (824).

7. The nylon closed invisible zipper three-in-one machine according to any one of claims 1 to 5, characterized in that: The threading device (5) comprises a zipper head vibration plate (51), a zipper head track (52), a zipper head conveying mechanism (53) and a threading mechanism (54). The threading mechanism (54) is located between the belt transfer device (3) and the melting stop device (6) to receive the zipper head conveyed by the zipper head conveying mechanism (53) and then thread the zipper head and install it on the zipper tape clamped by the clamp device (4).

8. The nylon closed invisible zipper three-in-one machine according to claim 7, characterized in that: The zipper head conveying mechanism (53) comprises a conveying base (531), a conveying slider (532) and a conveying robot (534); the conveying base (531) is fixedly mounted on the lower end of the zipper head track (52); the conveying slider (532) is slidably mounted on the conveying base (531); a receiving seat (535) is also provided on the conveying base (531); the conveying robot (534) is mounted on the conveying slider (532) so as to be driven by the conveying slider (532) to slide to the receiving seat (535) or slide to the threading mechanism (54); the receiving seat (535) is located at the output end of the zipper head track (52) so as to receive the zipper head delivered by the zipper head track (52) so as to be clamped by the conveying robot (534) and then conveyed to the threading mechanism (54).

9. The nylon closed invisible zipper three-in-one machine according to any one of claims 1 to 5, characterized in that: The belt transfer device (3) comprises a belt transfer base (31), a rotating motor (32) and a belt transfer clamping plate (33). The body of the rotating motor (32) is fixedly mounted on the belt transfer base (31). The belt transfer clamping plate (33) is in the shape of an elongated strip, and the middle part is fixedly mounted on the rotating shaft of the rotating motor (32). The two ends of the belt transfer clamping plate (33) are respectively provided with clamping claws (34) for clamping the zipper tape.

10. The nylon closed invisible zipper three-in-one machine according to claim 9, characterized in that: The clamping jaw (34) comprises a clamping jaw base (341), an upper clamping plate (342), a lower clamping plate (343) and a clamping jaw cylinder (344); the clamping jaw base (341) is fixedly mounted on the end of the rotating belt clamping plate (33); the lower clamping plate (343) is fixedly mounted on the clamping jaw base (341); the upper clamping plate (342) is movably mounted on the clamping jaw base (341) and is located above the lower clamping plate (343); the cylinder body of the clamping jaw cylinder (344) is fixedly mounted on the clamping jaw base (341); and the upper clamping plate (342) is fixedly mounted on the pushing rod of the clamping jaw cylinder (344).

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