Flame-retardant nylon zipper forming device and forming method

Abstract

The present application relates to zip fastener production equipment technical field, and disclose a kind of flame-retardant nylon zip fastener forming device and forming method, including rack, conveying assembly and feeding mechanism, rack includes base and mounting plate, the top of base is provided with transport plate, the upper surface of base is provided with four guide columns, mounting plate is slidably installed on guide column, conveying assembly includes driving gear and pressing plate, driving gear is set on the side of transport plate away from guide column, pressing plate is set on the upper surface of transport plate above, feeding mechanism includes movable slot and moving slot, movable slot and moving slot are all set below mounting plate.The conveying mechanism of the present application can extrude various zip fasteners to increase friction, thereby transporting zip fastener, and the flatness of zip fastener transportation can be ensured by pressing plate, the feeding mechanism can cut, feed and press the adhesive tape by reciprocating extrusion action on the adhesive tape, so that multiple steps in the adhesive action can be completed at one time.

Description

Technical Field

[0001] This invention relates to the field of zipper production equipment technology, specifically to a flame-retardant nylon zipper forming device and forming method. Background Technology

[0002] Based on their material, zippers are divided into three main categories: metal zippers, resin zippers, and nylon zippers. Metal zipper teeth are made by producing copper or aluminum wires using a tooth-making machine. Resin zipper teeth are made by producing polyester plastic filaments through dyeing and injection molding. Nylon zipper teeth are made by winding nylon monofilaments around a central wire using a heated molding process. Compared to metal and resin zippers, nylon zippers are characterized by lower cost, higher production volume, and wider market penetration.

[0003] In the manufacturing of nylon zippers, to improve production efficiency, a relatively long length is usually produced at once. Then, the zipper is sized according to demand. After sizing, adhesive needs to be applied to the sized area to strengthen the cut-off part of the zipper and improve the quality of the zipper. However, when applying adhesive to the zipper, the existing equipment cannot accurately fix it because the zipper is relatively soft. If the zipper is in a wrinkled state when applying adhesive, it will seriously affect the quality of zipper production. Summary of the Invention

[0004] The purpose of this invention is to provide a flame-retardant nylon zipper forming device and forming method to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution:

[0006] This invention relates to a flame-retardant nylon zipper forming device and method, comprising a frame, a base and a mounting plate, a transport plate on top of the base, the transport plate being fixedly mounted on the upper surface of the base by supports fixed at both ends of its lower surface, four guide columns being fixedly connected to one end of the upper surface of the base, and mounting holes being provided inside the mounting plate, through which the mounting plate is slidably mounted on the guide columns. The invention also includes a conveying assembly comprising a drive gear and a pressure plate, the drive gear being located on the side of the transport plate away from the guide columns, the pressure plate being located above the upper surface of the transport plate, and a feeding mechanism comprising a movable groove and a moving groove, both located below the mounting plate.

[0007] Furthermore, an impression plate is fixedly installed on the lower surface of the mounting plate at the end away from the guide post, and a vertical rack is fixedly connected to the middle of the mounting plate. A transmission gear is meshed on the side of the vertical rack near the drive gear. The transmission gear is fixedly installed on the output end of the servo motor, and the servo motor is fixedly installed on the upper surface of the base through a bracket fixedly connected to its side wall.

[0008] Furthermore, a driven gear is connected to the side of the driving gear away from the base. A first rotating shaft is fixedly connected to the central shaft of both the driving gear and the driven gear. Both ends of the first rotating shaft are rotatably mounted on a pair of vertical plates. The end of the first rotating shaft fixedly mounted on the driving gear is fixedly connected to the output end of the electric motor. The electric motor is fixedly mounted on the side wall of the vertical plate through an arc-shaped plate fixedly connected to its side wall.

[0009] Furthermore, rotating plates are rotatably connected to both ends of the first rotating shaft. A sliding groove is provided in the middle of the rotating plate. When retracting, the end of the rotating plate away from the first rotating shaft is rotatably connected to a second rotating shaft. A conveying roller is fixedly installed on the second rotating shaft. A belt is fixedly installed between the first and second rotating shafts in the same group on the side closer to the drive gear. Limiting posts are rotatably connected inside the sliding groove on the side away from the drive gear. A round rod and a limiting plate are fixedly connected to the side of the limiting post away from and the side closer to the drive gear, respectively. The ends of the two limiting plates away from the limiting posts are slidably set inside the sleeves, and a compression spring is fixedly installed between the two sleeves.

[0010] Furthermore, a U-shaped plate is provided below the pressure plate. The U-shaped plate is slidably mounted on the side of the transport plate near the base through its groove. The pressure plate and the U-shaped plate have four round holes, and screws are installed inside the round holes. Horizontal racks are fixedly installed on both sides of the lower surface of the U-shaped plate. The horizontal racks are respectively connected to the transmission gears on both sides. The end of the pressure plate away from the U-shaped plate has symmetrically opened mounting grooves. A cover plate is fixedly installed on the upper surface of the pressure plate along the trajectory of the mounting groove. A sliding groove is opened on the side wall of the cover plate. Rollers are provided inside the mounting grooves. Rotary columns are fixedly connected to the central shafts on both sides of the rollers. The rotating columns are slidably mounted inside the sliding grooves.

[0011] Furthermore, a square groove is provided at the bottom of the movable groove, and two sets of horizontal plates are symmetrically fixedly connected to the side wall of the movable groove. The horizontal plates are slidably disposed inside the column with the first guide groove. The column is fixedly installed on the upper surface of the base, and a return spring is fixedly installed between the lower surface of the horizontal plate and the bottom inner wall of the first guide groove.

[0012] Furthermore, a long groove and two recesses are provided on the side of the movable groove near the drive gear. The recesses are located on both sides of the long groove. A friction cylinder is provided inside the long groove. Both ends of the friction cylinder are fixedly connected to a round shaft. The round shaft passes through the side wall of the long groove and extends into the recess. A pinion is fixedly connected to the end of the round shaft away from the friction cylinder. The pinion is located inside the recess. A slot is provided between the pinion and the round shaft. A limit tooth is rotatably connected inside the slot on the round shaft.

[0013] Furthermore, uprights are symmetrically fixedly connected to both sides of the upper surface of the movable groove. The uprights are close to each other and a second guide groove is opened between the first side and the inner wall of the movable groove. A square groove is opened in the middle of the moving groove. Protrusions are symmetrically fixedly connected to both sides of the moving groove. The protrusions are slidably set inside the second guide groove. Four circular grooves are opened on the lower surface of the moving groove. Compression springs are fixedly installed between the bottom inner wall of the circular groove and the bottom inner wall of the movable groove. A small rack is symmetrically fixedly connected to the side of the moving groove close to the drive gear. The small rack is connected to the small gear in a transmission connection.

[0014] Furthermore, symmetrical storage slots are provided on the inner sidewall of the square slot, and the storage slots are slidably disposed inside the trapezoidal block. A retraction spring is fixedly installed between the trapezoidal block and the inner wall of the storage slot.

[0015] A molding method for a flame-retardant nylon zipper molding device includes the following steps:

[0016] Step 1: Install the zipper and adhesive tape;

[0017] Step two: Start the electric motor to enable the conveyor assembly to transport the zipper;

[0018] Step 3: After the zipper is transported to the specified length, the electric motor stops working, the servo motor rotates forward, and the feeding component cuts and presses the adhesive tape onto the zipper.

[0019] Step four: After the stamping is completed, the electric motor reverses, the pressure plate can position the zipper, and the moving groove disengages from the movable groove. The adhesive tape to be used next time can be rolled into the movable groove to facilitate the smooth operation of the next operation.

[0020] The present invention has the following beneficial effects:

[0021] (1) The present invention enables various zippers to pass through the conveying component by setting the limiting post and sleeve, and increases the friction by squeezing the zipper, which facilitates the transportation of the zipper. When the pressure plate reciprocates, it can facilitate the smooth operation of the stamping action. On the other hand, the rollers can be used to squeeze and flatten various zippers, thereby improving the quality of zipper processing.

[0022] (2) By setting up the feeding mechanism, the adhesive tape can be cut while the printing action is being performed, which facilitates the printing action. After the printing action is completed, the movable groove and the sliding groove move relative to each other, which allows the small gear to drive the drum to rotate and roll the adhesive tape into the movable groove, thus feeding the adhesive tape and facilitating the smooth progress of the next printing action.

[0023] (3) The present invention can drive the feeding mechanism and the pressure plate to move simultaneously by rotating the electric motor in both directions. When the electric motor rotates in the forward direction, the pressure plate can be moved away from the feeding mechanism, which is convenient for the feeding mechanism to perform the pressing action. When the electric motor rotates in the reverse direction, the feeding mechanism is disengaged from the zipper. The pressure plate moves in the reverse direction, which can flatten the zipper under the pressing plate and assist in the completion of the pressing action. This allows multiple steps in the pressing action to be completed simultaneously, increasing the practicality of the device.

[0024] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 This is a schematic diagram of the conveying component structure of the present invention;

[0028] Figure 3 This is a schematic diagram of the pressure plate structure of the present invention;

[0029] Figure 4 This is a schematic diagram of the installation of the feeding mechanism of the present invention;

[0030] Figure 5 This is a schematic diagram of the structure of the present invention.

[0031] Figure 6 This is a schematic diagram of the feeding mechanism of the present invention.

[0032] Figure 7 This is an exploded view of the feeding mechanism of the present invention.

[0033] Figure 8 For the present invention Figure 3 A magnified view of part A in the diagram;

[0034] Figure 9 For the present invention Figure 7 A magnified view of part B in the diagram;

[0035] Figure 10 This is a schematic diagram of the workflow structure of the present invention.

[0036] The attached diagram lists the components represented by each number as follows:

[0037] In the diagram: 1. Base; 11. Transport plate; 111. Support; 12. Guide column; 2. Mounting plate; 201. Mounting hole; 21. Imprint plate; 22. Vertical rack; 23. Transmission gear; 231. Servo motor; 232. Bracket; 3. Drive gear; 31. Driven gear; 32. Rotating shaft; 321. Vertical plate; 33. Electric motor; 331. Arc plate; 34. Rotating plate; 341. Sliding groove; 35. Rotating shaft; 351. Conveyor roller; 36. Belt; 37. Limiting column; 371. Round rod; 372. Limiting plate; 38. Sleeve; 381. Compression spring; 4. Pressure plate; 41. U-shaped plate; 411. Round hole; 412. Screw; 42. Horizontal rack; 43. Mounting slot; 431, cover plate; 432, slide groove; 44, roller; 441, rotating column; 5, movable slot; 501, square slot; 502, horizontal plate; 503, long slot; 504, groove; 51, column; 511, guide slot; 512, return spring; 52, friction cylinder; 521, round shaft; 53, pinion; 531, slot; 532, limiting tooth; 6, movable slot; 601, square slot; 602, protrusion; 603, round slot; 61, small rack; 62, compression spring; 63, storage slot; 631, trapezoidal block; 632, retraction spring. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] Example 1

[0040] Please see Figure 1 - Figure 9 As shown, the present invention is a flame-retardant nylon zipper forming device and forming method, including a frame, the frame including a base 1 and a mounting plate 2, a transport plate 11 is arranged above the base 1, the transport plate 11 is fixedly mounted on the upper surface of the base 1 by supports 111 fixed at both ends of its lower surface, four guide columns 12 are fixedly connected to one end of the upper surface of the base 1, the mounting plate 2 has mounting holes 201 inside, the mounting plate 2 is slidably mounted on the guide columns 12 through the mounting holes 201, and also includes: a conveying assembly, the conveying assembly including a drive gear 3 and a pressure plate 4, the drive gear 3 is arranged on the side of the transport plate 11 away from the guide columns 12, the pressure plate 4 is arranged above the upper surface of the transport plate 11, and a feeding mechanism, the feeding mechanism including a movable groove 5 and a moving groove 6, both the movable groove 5 and the moving groove 6 are arranged below the mounting plate 2.

[0041] An embossing plate 21 is fixedly mounted on the lower surface of the mounting plate 2 away from the guide post 12. A vertical rack 22 is fixedly connected to the middle of the mounting plate 2. A transmission gear 23 is meshed on the side of the vertical rack 22 near the drive gear 3. The transmission gear 23 is fixedly mounted on the output end of the servo motor 231. The servo motor 231 is fixedly mounted on the upper surface of the base 1 through a bracket 232 fixedly connected to its side wall.

[0042] The driven gear 31 is connected to the side of the driving gear 3 away from the base 1. The first rotating shaft 32 is fixedly connected to the central shaft of both the driving gear 3 and the driven gear 31. Both ends of the first rotating shaft 32 are rotatably mounted on a pair of vertical plates 321. The end of the first rotating shaft 32 fixedly mounted on the driving gear 3 is fixedly connected to the output end of the electric motor 33. The electric motor 33 is fixedly mounted on the side wall of the vertical plate 321 by an arc plate 331 fixedly connected to its side wall.

[0043] Rotating plates 34 are rotatably connected to both ends of the first rotating shaft 32. A sliding groove 341 is provided in the middle of the rotating plate 34. When retracting, the end of the rotating plate 34 away from the first rotating shaft 32 is rotatably connected to the second rotating shaft 35. A conveying roller 351 is fixedly installed on the second rotating shaft 35. A belt 36 is fixedly installed on the side of the first rotating shaft 32 and the second rotating shaft 35 in the same group, near the drive gear 3. A limit post 37 is rotatably connected inside the sliding groove 341 on the side away from the drive gear 3. A round rod 371 and a limit plate 372 are fixedly connected to the side of the limit post 37 away from and the side of the limit post 37 near the drive gear 3, respectively. The ends of the two limit plates 372 away from the limit post 37 are slidably disposed inside the sleeve 38, and a compression spring 381 is fixedly installed between the two sleeves 38.

[0044] A U-shaped plate 41 is provided below the pressure plate 4. The U-shaped plate 41 is slidably disposed on the side of the transport plate 11 near the base 1 through its groove. The pressure plate 4 and the U-shaped plate 41 have four round holes 411. Screws 412 are installed inside the round holes 411. A transverse rack 42 is fixedly installed on both sides of the lower surface of the U-shaped plate 41. The transverse rack 42 is connected to the transmission gears 23 on both sides respectively. A mounting groove 43 is symmetrically provided on the end of the pressure plate 4 away from the U-shaped plate 41. A cover plate 431 is fixedly installed on the upper surface of the pressure plate 4 along the trajectory of the mounting groove 43. A sliding groove 432 is provided on the side wall of the cover plate 431. A roller 44 is provided inside the mounting groove 43. A rotating column 441 is fixedly connected to the central shaft on both sides of the roller 44. The rotating column 441 is slidably disposed inside the sliding groove 432.

[0045] The bottom of the movable groove 5 is provided with a square groove 501. Two sets of horizontal plates 502 are symmetrically fixedly connected to the side wall of the movable groove 5. The horizontal plates 502 are slidably disposed inside the column 51 which is provided with a first guide groove 511. The column 51 is fixedly installed on the upper surface of the base 1. A return spring 512 is fixedly installed between the lower surface of the horizontal plate 502 and the bottom inner wall of the first guide groove 511.

[0046] On the side of the movable groove 5 near the drive gear 3, there is a long groove 503 and two recesses 504. The recesses 504 are located on both sides of the long groove 503. A friction cylinder 52 is provided inside the long groove 503. Both ends of the friction cylinder 52 are fixedly connected to a round shaft 521. The round shaft 521 passes through the side wall of the long groove 503 and extends into the recesses 504. A pinion 53 is fixedly connected to the end of the round shaft 52 away from the friction cylinder 52. The pinion 53 is located inside the recesses 504. A slot 531 is provided between the pinion 53 and the round shaft 521. A limit tooth 532 is rotatably connected inside the slot 531 on the round shaft 521.

[0047] The upper surface of the movable groove 5 is symmetrically fixedly connected to two columns 51. The columns 51 are close to each other and are connected to the inner wall of the movable groove 5. A second guide groove 511 is opened between the first side and the inner wall of the movable groove 5. A square groove 601 is opened in the middle of the movable groove 6. A protrusion 602 is symmetrically fixedly connected to both sides of the movable groove 6. The protrusion 602 is slidably disposed inside the second guide groove 511. Four circular grooves 603 are opened on the lower surface of the movable groove 6. A compression spring 62 is fixedly installed between the bottom inner wall of the circular groove 603 and the bottom inner wall of the movable groove 5. A small rack 61 is symmetrically fixedly connected to the side of the movable groove 6 near the drive gear 3. The small rack 61 is connected to the small gear 53 for transmission.

[0048] A storage slot 63 is symmetrically provided on the inner side wall of the square slot 601. The storage slot 63 is slidably disposed on the trapezoidal block 631. A retraction spring 632 is fixedly installed between the trapezoidal block 631 and the inner wall of the storage slot 63.

[0049] When in use, the zipper is placed inside the device and the electric motor 33 is started. The electric motor 33 can drive the drive gear 3 and the driven gear 31 to rotate synchronously. In turn, through the transmission action of the belt 36, the upper and lower conveyor rollers 351 are driven to rotate. And through the setting of the limit post 37 and the sleeve 38, the two rotating shafts 32 can squeeze the zipper and transport the zipper.

[0050] When the zipper is transported to the specified length, the servo motor 231 can be started to rotate forward. Through the action of the transmission gear 23 and the transmission action with the vertical rack 22 and the horizontal rack 42, the pressure plate 4 moves away from the mounting plate 2, and the imprinting plate 21 and the mounting plate 2 move closer to the base 1.

[0051] As the imprinting plate 21 moves downward, it squeezes the trapezoidal block 631. Since the elasticity of the contraction spring 632 is greater than that of the compression spring 62, it pushes the moving groove 6 into the movable groove 5, thereby cutting the adhesive tape. Then the imprinting plate 21 moves downward again, pushing the movable groove 5 towards the side closer to the base 1 until the lower surface of the movable groove 5 is in contact with the zipper. The imprinting plate 21 continues to move downward, pushing the trapezoidal block 631 to contract. The contraction spring 632 is compressed, and then the adhesive tape is heated and squeezed to stick it to the fixed position of the zipper.

[0052] Then, the servo motor 231 reverses, causing the pressure plate 4 and the mounting plate 2 to move in opposite directions. The pressure plate 4 moves in opposite directions and can go deep under the imprinting plate 21. When the conveying component transports the zipper next time, it will fix and squeeze the zipper to ensure the flatness of the zipper and the quality of zipper production. As the imprinting plate 21 moves upward, due to the elasticity of the compression spring 62, it pushes the moving groove 6 to disengage from the movable groove 5. At this time, the small rack 61 will drive the small gear 53 to rotate, which will allow the friction cylinder 52 to roll the adhesive cloth into the movable groove 5, so that the next adhesive application can be carried out smoothly.

[0053] Example 2

[0054] like Figure 10 As shown, a molding method for a flame-retardant nylon zipper molding device includes the following steps:

[0055] Step 1: Install the zipper and adhesive tape;

[0056] Step 2: Start the electric motor 33 to enable the conveyor assembly to transport the zipper;

[0057] Step 3: After the zipper is transported to the specified length, the electric motor 33 stops working, the servo motor 231 rotates forward, and the feeding component cuts the adhesive tape and imprints it onto the zipper.

[0058] Step four: After the stamping is completed, the electric motor 33 reverses, the pressure plate 4 can position the zipper, and the moving groove 6 disengages from the inside of the movable groove 5. The adhesive tape to be used next time can be rolled into the movable groove 5 to facilitate the smooth operation of the next action.

[0059] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A flame-retardant nylon zipper forming device, comprising a rack, the rack comprising a base (1) and a mounting plate (2), the upper side of the base (1) being provided with a conveying plate (11), the conveying plate (11) being fixedly installed on the upper side of the base (1) through supports (111) fixed at both ends of the lower side of the conveying plate (11), one end of the upper side of the base (1) being fixedly connected with four guide columns (12), the inside of the mounting plate (2) being provided with a mounting hole (201), the mounting plate (2) being slidably installed on the guide columns (12) through the mounting hole (201), characterized in that, Also includes: The conveying assembly includes a driving gear (3) and a pressing plate (4), the driving gear (3) is arranged on the side of the transport plate (11) away from the guide column (12), and the pressing plate (4) is arranged above the upper surface of the transport plate (11); The feeding mechanism includes a movable groove (5) and a moving groove (6), the movable groove (5) and the moving groove (6) are arranged below the mounting plate (2); The upper surface of the movable groove (5) is fixedly connected with a stand (51) on both sides, the stand (51) is jointly provided with a second guide groove between the first side and the inner wall of the movable groove (5), the middle of the moving groove (6) is provided with a square groove (601), the two sides of the moving groove (6) are fixedly connected with a protrusion (602), the protrusion (602) is slidably arranged in the second guide groove, four circular grooves (603) are arranged on the lower surface of the moving groove (6), the bottom inner wall of the circular groove (603) and the bottom inner wall of the movable groove (5) are fixedly connected with a compression spring (62), the side of the moving groove (6) close to the driving gear (3) is fixedly connected with a small gear rack (61), and the small gear rack (61) is in transmission connection with the small gear (53); The bottom of the movable groove (5) is provided with a square groove (501), and two groups of horizontal plates (502) are fixedly connected on the side wall of the movable groove (5), the horizontal plate (502) is slidably arranged in the stand (51) provided with a first guide groove (511), the stand (51) is fixedly installed on the upper surface of the base (1), and the reset spring (512) is fixedly installed between the lower surface of the horizontal plate (502) and the bottom inner wall of the first guide groove (511); The side of the movable groove (5) close to the driving gear (3) is provided with a long groove (503) and two recesses (504), the recesses (504) are located on both sides of the long groove (503), the long groove (503) is provided with a friction cylinder (52), both ends of the friction cylinder (52) are fixedly connected with a circular shaft (521), the circular shaft (521) penetrates the side wall of the long groove (503) and extends into the recess (504), one end of the circular shaft (521) away from the friction cylinder (52) is fixedly connected with a small gear (53), the small gear (53) is located in the recess (504), and the small gear (53) and the circular shaft (521) are jointly provided with a clamping groove (531), and the clamping groove (531) in the circular shaft (521) is rotatably connected with a limiting tooth (532); The inner side wall of the square groove (601) is symmetrically provided with a receiving groove (63), the trapezoidal block (631) is slidably arranged in the receiving groove (63), and the receiving groove (63) is fixedly installed between the trapezoidal block (631) and the inner wall of the receiving groove (63).

2. A flame resistant nylon zipper forming device as defined in claim 1, wherein: The installation plate (2) is fixedly installed with a platen (21) on the lower surface of the end away from the guide column (12), the middle of the installation plate (2) is fixedly connected with a vertical rack (22), the side close to the driving gear (3) of the vertical rack (22) is engaged with a transmission gear (23), the transmission gear (23) is fixedly installed on the output end of a servo motor (231), the servo motor (231) is fixedly installed on the upper surface of the base (1) through a support (232) fixedly connected on the side wall thereof.

3. A flame resistant nylon zipper forming apparatus as defined in claim 2, wherein: The side away from the base (1) of the driving gear (3) is drivingly connected with a driven gear (31), the middle of the driving gear (3) and the driven gear (31) are fixedly connected with a first rotating shaft (32), the two ends of the first rotating shaft (32) are rotatably installed on a pair of vertical plates (321), the end close to the driving gear (3) of the first rotating shaft (32) fixedly installed on the driving gear (3) is fixedly connected on the output end of an electric motor (33), the electric motor (33) is fixedly installed on the side wall of the vertical plate (321) through an arc plate (331) fixedly connected on the side wall thereof.

4. A flame resistant nylon zipper forming apparatus as defined in claim 3, wherein: The two ends of the first rotating shaft (32) are rotatably connected with a rotating plate (34), the middle of the rotating plate (34) is provided with a sliding groove (341), the end away from the first rotating shaft (32) of the rotating plate (34) is rotatably connected with a second rotating shaft (35), the second rotating shaft (35) is fixedly installed with a conveying roller (351), the side close to the driving gear (3) between the first rotating shaft (32) and the second rotating shaft (35) in the same group is fixedly installed with a belt (36), the inside of the sliding groove (341) away from the side of the driving gear (3) is rotatably connected with a limiting column (37), the side away from and close to the driving gear (3) of the limiting column (37) is fixedly connected with a round rod (371) and a limiting plate (372) respectively, the two ends of the two limiting plates (372) away from the limiting column (37) are slidably arranged in the inside of a sleeve (38), and the two sleeves (38) are fixedly installed with a compression spring (381).

5. A flame resistant nylon zipper forming apparatus as defined in claim 4, wherein: The lower part of the pressing plate (4) is provided with a U-shaped plate (41), the U-shaped plate (41) is slidably arranged on the side of the transport plate (11) close to the base (1) through its groove, the pressing plate (4) and the U-shaped plate (41) are provided with four round holes (411) together, the screw (412) is matched and installed inside the round hole (411), the lateral rack (42) is fixedly installed on both sides of the lower surface of the U-shaped plate (41), the lateral rack (42) is drivingly connected with the transmission gear (23) on both sides respectively, the installation groove (43) is symmetrically provided at one end of the pressing plate (4) away from the U-shaped plate (41), the cover plate (431) is fixedly installed on the upper surface of the pressing plate (4) along the trajectory of the installation groove (43), the sliding groove (432) is provided on the side wall of the cover plate (431), the roller (44) is arranged inside the installation groove (43), the rotating column (441) is fixedly connected on both sides of the roller (44) at the middle shaft, and the rotating column (441) is slidably arranged inside the sliding groove (432).

6. A method of molding a flame-retardant nylon zipper using the molding apparatus for a flame-retardant nylon zipper according to claim 5, characterized by, The method comprises the following steps: Step one, install the zipper and the adhesive tape; Step two, start the electric motor (33), so that the conveying assembly can transport the zipper; Step three, after the zipper is transported to the specified length, the electric motor (33) stops working, the servo motor (231) rotates forward, the feeding assembly cuts off the adhesive tape and stamps it on the zipper; Step four, after the stamping is completed, the servo motor (231) reverses, the pressing plate (4) can position the zipper, the moving groove (6) is separated from the inside of the movable groove (5), the adhesive tape needed to be used next time can be wound into the inside of the movable groove (5), so as to facilitate the smooth operation next time.

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