Nylon double-rib zipper production equipment

Abstract

The invention relates to nylon double-rib zipper production equipment. Nylon double-rib zipper production equipment comprises a transmission module and a forming module, the forming module comprises a mold shell, two forming screw rods which are arranged side by side in the left-right direction are rotationally fixed in the mold shell, and the spiral directions of thread teeth of the two forming screw rods are opposite. The lower ends of the forming screw rods extend to the lower part of the mold shell and are provided with hook heads, and an isolation part fixed with the mold shell is arranged between the two forming screw rods; the device further comprises a traction adjusting module, the traction adjusting module comprises a traction block, a first linkage assembly used for driving the traction block to move up and down and back and forth, and a second linkage assembly used for driving the traction block to move left and right, and the front end of the traction block is provided with a through hole penetrating up and down to allow the nylon wire to pass through. The production line has the advantages that the production line is used for producing nylon double-bone zippers, the production efficiency can be improved, and the equipment is miniaturized.

Description

Technical Field

[0001] The invention relates to a nylon double-bone zipper production device. Background Art

[0002] Chinese patents with application numbers 201930371705.8 and 202021462187.4 disclose a nylon double-bone zipper comprising two zipper bodies fixed to a belt body. The zipper bodies include a plurality of sprockets, each of which includes a snap-fitting portion and a main body connecting the snap-fitting portion, with the main body and the snap-fitting portion being integrally arranged. An installation area with an opening for the belt body to enter is formed between the two main bodies, and the shape formed between the snap-fitting portion and the two main bodies is U-shaped. Adjacent sprockets of the same zipper body are connected in series via a connecting portion, which is integrally arranged with the sprockets. The main body and the belt body are fixed together by sewing.

[0003] Because it has two main parts, conventional nylon zipper forming machines (such as the solution in CN104494175) are difficult to produce. Existing solutions wind nylon monofilament around a rotating toothed disk, then form the teeth using a heated mold. However, due to the limited diameter of the disk, the disk must be reheated after each rotation, resulting in intermittent and low-speed production and low efficiency. Furthermore, the complex tooth structure on the disk requires high machining precision, resulting in high production costs. Furthermore, the disk's large size hinders the miniaturization of the entire zipper production equipment. Summary of the Invention

[0004] The present invention aims to provide a nylon double-bone zipper production device which is used for producing nylon double-bone zippers and can improve production efficiency and miniaturize the device.

[0005] To achieve the above-mentioned object, the present invention adopts a nylon double-bone zipper production equipment, including a transmission module and a molding module. The molding module includes a mold shell, in which two molding screws arranged side by side on the left and right are rotatably fixed. The spiral directions of the threads of the two molding screws are opposite. The lower ends of the molding screws extend below the mold shell and have hooks. The two hooks are arranged at the same height. An isolation portion fixed to the mold shell is provided between the two molding screws, and the lower end of the isolation portion extends to the side of the hooks. It also includes a traction adjustment module, which includes a traction block, a first linkage component for driving the traction block to move up and down and forward and backward, and a second linkage component for driving the traction block to move left and right. The front end of the traction block is provided with a through hole that passes through the top and bottom for the nylon wire to pass through; the first linkage component, the second linkage component and the forming screw are respectively used to receive the torque output by the first output end, the second output end and the third output end of the transmission module.

[0006] When the device is used, the nylon filament is first passed through the through hole of the traction block and preheated at the forming module. After the temperature reaches the set temperature, the transmission module is started and the nylon filament is loaded. At this time, the two forming screws rotate synchronously, and the traction block pulls the nylon filament to move between the two forming screws.

[0007] When the traction block drives the nylon filament to move between the lower end of the left molding screw and the isolation part, the rotation of the left molding screw causes the hook head at the lower end to drive the nylon filament into the space between the spiral groove of the left molding screw and the inner wall of the mold shell and the side of the isolation part; then the traction block moves downward, horizontally, and upward under the action of the first linkage component and the second linkage component, so that the traction block moves the subsequent nylon filament to between the lower end of the right molding screw and the isolation part, and the rotation of the right molding screw causes the hook head at the lower end to drive the nylon filament into the space between the spiral groove of the right molding screw and the inner wall of the mold shell and the side of the isolation part; then the traction block moves downward, horizontally, and upward under the action of the first linkage component and the second linkage component, and then moves the nylon filament to between the lower end of the left molding screw and the isolation part and repeats the above operation, thereby completing the continuous and uninterrupted production of the nylon double-bone zipper. Among them, the relative setting between the traction block and the molding screw should be reasonably set, and the rotation direction and hook head direction of the molding screw should be reasonably set, so that the nylon filament will not be entangled on the molding screw.

[0008] The traction block, driven by the first and second linkage assemblies, moves in the X, Y, and Z directions. By bringing the traction block closer to the forming screw, the screw's hook head can grab the nylon filament. By moving the traction block up and down and horizontally, alternating feeding is achieved between the two forming screws. A single nylon filament passes through the traction block, is first wound by one forming screw into a sprocket on one side, then the traction block moves, then is wound by the other forming screw into a sprocket on the other side. Both sprockets rise synchronously, and the finished product is continuously discharged.

[0009] The present invention's equipment uses two forming screws to separately form the two sides of a nylon double-bone zipper. A traction adjustment module enables alternating feeding of nylon filaments, thereby forming a complete nylon double-bone zipper. As the forming screws rotate, the finished nylon double-bone zipper moves upward along the axial direction of the forming screws to facilitate discharge. This equipment can also utilize the structure of existing zipper production equipment that compresses the portion of nylon filament located on the back side of the isolation portion during production.

[0010] The equipment of the present invention has higher utilization efficiency and can realize continuous production; the forming screw + the isolation part can form U-shaped teeth, and the processing cost is low; the large-diameter disk is eliminated, the equipment volume is reduced, and the setting of the traction adjustment module and the transmission module is convenient.

[0011] Preferably, the first linkage assembly includes an upper push-pull rod and a lower push-pull rod arranged in parallel and spaced apart from each other, and a guide structure is provided between the upper push-pull rod and the lower push-pull rod and the fixed part to cooperate with each other to limit the upper push-pull rod and the lower push-pull rod to only axial movement, the front end of the upper push-pull rod is connected to the deviated end of the traction block through a connecting rod, and the front end of the lower push-pull rod is rotatably connected to the rear end of the traction block. After receiving the output torque of the transmission module, the moving distance of the lower push-pull rod is greater than the moving distance of the upper push-pull rod, so that the front end of the traction block swings upward or downward.

[0012] The above setting allows the nylon filament to be lifted to avoid interference and accurately sent to the next molding position when switching between the left and right molding screws, completing two tasks in one action and eliminating the need for additional mechanisms.

[0013] Preferably, the first linkage assembly uses a first eccentric connecting rod structure to achieve the independent movement of the upper push-pull rod and the lower push-pull rod. The eccentric connecting rod splits a rotary input into two linear outputs with different strokes, ensuring synchronization and easy adjustment while minimizing the number of parts.

[0014] Preferably, the first output end has a first output shaft that is vertically and rotatably arranged, and the first eccentric connecting rod structure includes a first rotating block fixed on the first output shaft, an upper linkage rod and a lower linkage rod are respectively connected between the first rotating block and the upper push-pull rod and between the first rotating block and the lower push-pull rod, the two ends of the upper linkage rod are respectively rotatably connected to the first rotating block and the upper push-pull rod, and the two ends of the lower linkage rod are respectively rotatably connected to the first rotating block and the lower push-pull rod, and the ends of the upper linkage rod and the lower linkage rod for connection to the rotating block are both deviated from the axis of the first output shaft, and the end of the upper linkage rod connected to the first rotating block is relatively deviated from the end of the lower linkage rod connected to the first rotating block. The above arrangement can reduce the use of parts and components of the device of the present invention, improve synchronization effect, and also has the advantages of smoother movement and higher precision control.

[0015] Preferably, the connecting rod comprises at least two connecting rod monomers. With more hinge points, it becomes a flexible chain, which can disperse the inertial impact to multiple hinge pairs during high-speed reversing, reducing instantaneous peak force, thereby reducing noise and extending service life.

[0016] Preferably, the second linkage assembly includes a second eccentric connecting rod structure, the first linkage assembly is arranged on a slider, a sliding structure extending in the left and right directions that cooperates with each other is provided between the slider and the fixed part, and the second eccentric connecting rod structure is arranged between the slider and the second output end of the transmission module.

[0017] Left and right movement and up, down, front and back movement are completed by different parts. The freedom of the two parts is completely decoupled. When debugging, first calibrate the up and down and left and right separately to prevent them from interfering with each other.

[0018] Preferably, the second output end has a second output shaft that is vertically and rotatably arranged, and the second eccentric connecting rod structure includes a second rotating block arranged on the second output shaft, and the second rotating block is rotatably connected to one end of the side linkage rod at a position deviating from the second output shaft, and the other end of the side linkage rod is rotatably connected to the slider.

[0019] Preferably, the transmission module includes a screw-rotating gear set located within the mold housing. The screw gear set includes two first gears arranged side by side and meshing with each other. Each of the two forming screws is provided with a meshing tooth structure between the first gears. This arrangement enables the two forming screws to have the same rotational speed, achieving higher synchronization and reducing the number of related components.

[0020] Preferably, the transmission module includes a drive motor and a first linkage shaft for receiving the output torque of the drive motor. The first linkage shaft is linked to a second linkage shaft and a third linkage shaft disposed vertically. The third linkage shaft achieves rotation of a fourth linkage shaft disposed vertically via a reduction gear transmission. The first output end is located at the third linkage shaft, the second output end is located at the fourth linkage shaft, and the third output end is located at the second linkage shaft. Using a single motor to achieve forward, backward, left, right, and upward and downward movement of the traction block can improve synchronization and reduce motor usage.

[0021] Preferably, the transmission module further includes a fifth linkage shaft, wherein the first linkage shaft realizes the rotation of the fifth linkage shaft through a reduction transmission, and drives the nylon thread in contact with the fifth linkage shaft to feed the nylon thread. The transmission module of the present invention is not only used to realize the movement of the traction block, but also used for feeding the nylon thread.

[0022] The invention has the advantages of being used for the production of nylon double-bone zippers, improving production efficiency and miniaturizing equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the mold shell of the molding module of the present invention.

[0024] Figure 2 It is an enlarged view of the lower end of the molding screw at the mold shell of the present invention.

[0025] Figure 3 It is a schematic structural diagram of the mold shell of the present invention after removing the front shell.

[0026] Figure 4 It is a top view of the first linkage component and the second linkage component of the present invention.

[0027] Figure 5 It is a side view of the first linkage assembly of the present invention.

[0028] Figure 6 It is a side view of the transmission module of the present invention.

[0029] Figure 7 It is a schematic diagram of the synchronous structure of the first conveying end and the second conveying end of the transmission module of the present invention. DETAILED DESCRIPTION

[0030] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0031] This embodiment discloses a nylon double-bone zipper production device, comprising a transmission module, a forming module, and a traction adjustment module. These modules are mounted on a device frame, which includes a platform, with the forming module secured to its upper surface via brackets. The traction adjustment module in this embodiment is also located above the platform. This embodiment of the device is equipped with a wire feeder, which utilizes existing wire feeders to feed a spool of nylon yarn (nylon monofilament) wound on a bobbin.

[0032] Depend on Figures 1 to 3 As shown, the molding module of this embodiment includes a mold housing 100, which includes a rear housing for fixing to a bracket and a front housing located at the front side. A mounting groove 101 is formed between the rear housing and the front housing for accommodating two molding screws 1. The molding screws 1 are axially limited by the screw limiting structure of existing zipper molding machines, and radially limited by bearings 11 and the like. The mold housing 100 is provided with a preheating assembly 110 and an air cooling assembly 120, with the preheating assembly 110 at the bottom and the air cooling assembly 120 at the top. The preheating assembly 110 and the air cooling assembly 120 are conventional existing components used in conventional zipper molding machines.

[0033] Two molding screws 1 are rotatably fixed in the mold housing 100, arranged side by side and at the same height. The lower ends of the molding screws 1 extend below the mold housing, and the threads of the molding screws 1 extend to the lower ends to form hooks 11. The two molding screws 1 are arranged symmetrically, with the threads of the two molding screws 1 spiraling in opposite directions, and the two hooks 11 are arranged at the same height. The two molding screws 1 rotate synchronously under the action of the transmission module. In this embodiment, when viewed from above, the molding screw on the left rotates counterclockwise, while the molding screw on the right rotates clockwise.

[0034] Depend on Figures 1 to 3 As shown, a spacer 2 fixed to the mold housing 100 is provided between the two molding screws 1 of this embodiment. The lower end of the spacer 2 is relatively located below the lower end of the hook head 11. The spacer 2 of this embodiment is in the form of a long strip. The front or rear shell of the mold housing 100 is provided with a plurality of fixing grooves 102 for tightly fitting the spacer 2. The plurality of fixing grooves 102 are arranged at intervals up and down. The spacer 2 has a fixing protrusion that extends into the fixing groove 102. Figure 3As shown, the rear shell of the mold shell 100 is also provided with a guide groove running through the front and back, in which a long strip of shaping piece 103 is fitted. The shaping piece 103 and the isolation part 2 are located in the same straight line, which serves as the symmetry axis of the two molding screws 1.

[0035] Depend on Figure 1 、 Figure 2 、 Figure 4 and Figure 5 As shown, the traction adjustment module includes a traction block 3, a first linkage assembly 200 for driving the traction block 3 in vertical and forward and backward motion, and a second linkage assembly 300 for driving the traction block 3 in left and right motion. The front end of the traction block 3 is provided with a through hole extending vertically through the front end for the nylon filament 10 to pass through. The first linkage assembly 200, the second linkage assembly 300, and the forming screw 1 are respectively configured to receive the torque outputted by the first, second, and third output ends of the transmission module.

[0036] The first linkage assembly is disposed on the slider 4 and includes an upper push-pull rod 31 and a lower push-pull rod 32, which are spaced apart and arranged parallel to each other. The upper push-pull rod 31 and the lower push-pull rod 32 cooperate with the slider 4 to form a guide structure that restricts the upper push-pull rod 31 and the lower push-pull rod 32 to axial movement. Specifically, the slider 4 is provided with two guide holes, spaced apart and used for the upper push-pull rod 31 and the lower push-pull rod 32, respectively. The front end of the upper push-pull rod 31 is connected to the middle of the traction block 3 via a connecting rod, and the front end of the lower push-pull rod 32 is rotationally connected to the rear end of the traction block 3. After receiving the output torque of the transmission module, the lower push-pull rod 32 moves a greater distance than the upper push-pull rod 31, thereby causing the front end of the traction block 3 to swing upward or downward. The connecting rod includes three connecting rod units 30, each of which has a chain-like structure.

[0037] In the first linkage assembly, the first eccentric link structure is used to realize the separate movement of the upper push-pull rod 31 and the lower push-pull rod 32. The first output end has a first output shaft 201 that is vertically and rotatably arranged. The first eccentric link structure includes a first rotating block 202 fixed to the first output shaft 201. An upper linkage rod 33 and a lower linkage rod 34 are connected between the first rotating block 202 and the upper push-pull rod 31 and between the first rotating block 202 and the lower push-pull rod 32, respectively. The two ends of the upper linkage rod 33 are respectively rotatably connected to the first rotating block 202 and the upper push-pull rod 31, and the two ends of the lower linkage rod 34 are respectively rotatably connected to the first rotating block 202 and the lower push-pull rod 32. The ends of the upper linkage rod 33 and the lower linkage rod 34 for connecting to the rotating block 202 are both deviated from the axis of the first output shaft 201, and the end of the upper linkage rod 33 connected to the first rotating block 202 is relatively deviated from the end of the lower linkage rod 34 connected to the first rotating block 202. Among them, the guide structure also includes an upper guide block 41 fixed to the slider 4, the upper guide block is provided with an upper matching groove extending in the front-to-back direction, the upper push-pull rod 31 is fixed to the vertically arranged upper connecting rod 35, and the upper connecting rod 35 is slidably fitted in the upper matching groove; the guide structure also includes a lower matching groove arranged on the slider 4, the lower push-pull rod 32 is fixed to the vertically arranged lower connecting rod 36, and the lower connecting rod 36 is slidably fitted in the lower matching groove; and the front end of the upper linkage rod 33 and the front end of the lower linkage rod 34 are respectively fixed to the upper connecting rod 35 and the lower connecting rod 36.

[0038] Depend on Figure 4 As shown, the second linkage assembly includes a second eccentric link structure. A cooperating sliding structure extending in the left-right direction is provided between the slider 4 and the platform. The second eccentric link structure is disposed between the slider 4 and the second output end of the transmission module. The second output end has a second vertically rotatable output shaft. The second eccentric link structure includes a second rotating block 302 disposed on the second output shaft. The second rotating block 302 is rotatably connected to one end of a side linkage rod 42 at a position offset from the second output shaft 301. The other end of the side linkage rod 42 is rotatably connected to the slider 4.

[0039] Depend on Figure 6 As shown, the transmission module of this embodiment includes a drive motor 51 and a first linkage shaft 52 for receiving the output torque of the drive motor 51. The first linkage shaft 52 is arranged horizontally, and the two ends of the first linkage shaft 52 are respectively linked with the vertically arranged second linkage shaft 53 and the vertically arranged third linkage shaft 54.

[0040] Depend on Figure 7As shown, the second linkage shaft 53 achieves the rotation of the vertically arranged fourth linkage shaft 55 through a reduction gear transmission. The first output end is located at the third linkage shaft 54, the second output end is located at the fourth linkage shaft 55, and the third output end is located at the second linkage shaft 53. A small linkage pulley 541 and a large linkage pulley 542 are respectively provided on the third linkage shaft 54 ​​and the fourth linkage shaft 55. The small linkage pulley 541 and the large linkage pulley 542 are respectively provided with a synchronous belt and cooperate with a belt pressure roller 543.

[0041] Depend on Figure 7 As shown, the transmission module of this embodiment also includes a transversely arranged fifth linkage shaft 56. The first linkage shaft 52 realizes the rotation of the fifth linkage shaft 56 through a reduction transmission, thereby driving the nylon thread in contact with the fifth linkage shaft to feed the material. The fifth linkage shaft 56 is used in conjunction with the wire feeding device. The rotation of the fifth linkage shaft 56 applies force to the nylon thread and drives the rotation of the wire rack to drive the nylon thread feeding. The part of the fifth linkage shaft 56 that contacts the nylon thread is the wire feeding portion 561. The transmission module of this embodiment is used not only to realize the movement of the traction block 3 and the rotation of the forming screw 1, but also to realize wire feeding.

[0042] Depend on Figure 1 As shown, the transmission module includes a screw-rotating gear set located in the mold housing 100. The screw gear set includes two first gears 12 arranged side by side and meshing with each other. The upper ends of the two molding screws 1 are each provided with a meshing tooth structure with one of the first gears 12. Among them, one of the first gears 12 is provided with an upwardly extending first gear linkage shaft 121. A driving pulley is fixed to the second linkage shaft 53, which is located directly behind the isolation portion 2. A driven pulley is fixed to the first gear linkage shaft 121. The driving pulley on the second linkage shaft 53 and the driven pulley on the first gear linkage shaft 121 are driven by a belt.

[0043] This embodiment has the advantages of being used for the production of nylon double-bone zippers, improving production efficiency and miniaturizing the equipment.

Claims

1. A nylon double-bone zipper production equipment, including a transmission module and a molding module, characterized in that: The molding module includes a mold shell, in which two molding screws arranged side by side on the left and right are rotatably fixed. The spiral directions of the threads of the two molding screws are opposite. The lower ends of the molding screws extend below the mold shell and have hook heads. The two hook heads are arranged at the same height. An isolation portion fixed to the mold shell is provided between the two molding screws, and the lower end of the isolation portion extends to the side of the hook heads. The invention also includes a traction adjustment module, which includes a traction block, a first linkage component for driving the traction block to move up and down and forward and backward, and a second linkage component for driving the traction block to move left and right. The front end of the traction block is provided with a through hole extending vertically through the front end for the nylon thread to pass through. The first linkage assembly, the second linkage assembly and the forming screw are respectively used to receive the torque output by the first output end, the second output end and the third output end of the transmission module.

2. The nylon double-bone zipper production equipment according to claim 1, characterized in that: The first linkage assembly includes an upper push-pull rod and a lower push-pull rod arranged in parallel and spaced apart from each other. A guide structure is provided between the upper push-pull rod and the lower push-pull rod and the fixed part to cooperate with each other to limit the upper push-pull rod and the lower push-pull rod to only axial movement. The front end of the upper push-pull rod is connected to the deviated end of the traction block through a connecting rod, and the front end of the lower push-pull rod is rotatably connected to the rear end of the traction block. After receiving the output torque of the transmission module, the movement distance of the lower push-pull rod is greater than the movement distance of the upper push-pull rod, so that the front end of the traction block swings upward or downward.

3. The nylon double-bone zipper production equipment according to claim 1 or 2, characterized in that: In the first linkage assembly, the upper push-pull rod and the lower push-pull rod are moved separately through the first eccentric connecting rod structure.

4. The nylon double-bone zipper production equipment according to claim 3, characterized in that: The first output end has a first output shaft that is vertically and rotatably arranged, and the first eccentric connecting rod structure includes a first rotating block fixed on the first output shaft, and an upper linkage rod and a lower linkage rod are respectively connected between the first rotating block and the upper push-pull rod and between the first rotating block and the lower push-pull rod, and the two ends of the upper linkage rod are respectively rotatably connected to the first rotating block and the upper push-pull rod, and the two ends of the lower linkage rod are respectively rotatably connected to the first rotating block and the lower push-pull rod, and the ends of the upper linkage rod and the lower linkage rod for connecting to the rotating block are both deviated from the axis of the first output shaft, and the end of the upper linkage rod connected to the first rotating block is relatively deviated from the end of the lower linkage rod connected to the first rotating block.

5. The nylon double-bone zipper production equipment according to claim 2, characterized in that: The connecting rod includes at least two connecting rod monomers.

6. The nylon double-bone zipper production equipment according to claim 1 or 2, characterized in that: The second linkage component includes a second eccentric connecting rod structure. The first linkage components are all arranged on the slider. A sliding structure extending in the left and right directions that cooperate with each other is provided between the slider and the fixed part. The second eccentric connecting rod structure is arranged between the slider and the second output end of the transmission module.

7. The nylon double-bone zipper production equipment according to claim 6, characterized in that: The second output end has a second output shaft that is vertically and rotatably arranged. The second eccentric connecting rod structure includes a second rotating block arranged on the second output shaft. The second rotating block is rotatably connected to one end of the side linkage rod at a position deviating from the second output shaft, and the other end of the side linkage rod is rotatably connected to the slider.

8. The nylon double-bone zipper production equipment according to claim 1, characterized in that: The transmission module includes a gear set for screw rotation located at the mold shell, and the screw gear set includes two first gears arranged side by side and meshing with each other. A tooth structure meshing with each other is provided between the two molding screws and each first gear.

9. The nylon double-bone zipper production equipment according to claim 1, characterized in that: The transmission module includes a drive motor and a first linkage shaft for receiving the output torque of the drive motor. The first linkage shaft is linked with a second linkage shaft and a third linkage shaft arranged vertically. The third linkage shaft realizes the rotation of a fourth linkage shaft arranged vertically through a reduction transmission. The first output end is located at the third linkage shaft, the second output end is located at the fourth linkage shaft, and the third output end is located at the second linkage shaft.

10. The nylon double-bone zipper production equipment according to claim 9, characterized in that: The transmission module further includes a fifth linkage shaft. The first linkage shaft realizes the rotation of the fifth linkage shaft through reduction transmission, and drives the nylon thread in contact with the fifth linkage shaft to feed the material.

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