Zipper tape pre-expanding equipment

Abstract

The utility model relates to zipper tape pre-expanding equipment which comprises a workbench, a feeding device, a pre-expanding device and a discharging device. The feeding device is provided with a synchronous conveying pressing belt, and a heating and shaping device is arranged below the conveying pressing belt. The zipper tape pre-expanding device overcomes the defects of short heating and shaping time and poor pre-expanding and shaping effect in the prior art, so that the zipper tape is fully heated before pre-expanding, the pre-expanding effect is good, and the zipper tape is not easy to deform.

Description

Technical Field

[0001] The utility model relates to the technical field of zipper tape processing equipment, in particular to a zipper tape pre-expansion device. Background Art

[0002] The zipper is straight after it's manufactured in the factory. This can easily cause the garment to arch and the zipper to open and close poorly during use. The zipper needs to be pre-expanded to give the zipper a certain inner curvature. Existing technology uses zipper molding equipment to pre-expand and shape the zipper. This pre-shaped zipper has an inner curvature that resists deformation, improving zipper quality and preventing it from arching during use.

[0003] A Chinese utility model, with authorization publication number CN216907070U, discloses a zipper pre-expanding machine comprising a workbench, a feeding device, a drive roller assembly, a heat-setting device, and a blanking device. The drive roller assembly comprises two sets of differential drive roller assemblies, each of which includes a first drive roller and a second drive roller positioned above the first drive roller. The first and second drive rollers act on the upper and lower sides of the zipper tape to be processed, respectively, to convey the tape forward. The front drive roller assembly drives the tape forward at a greater speed than the rear drive roller assembly. The machine also includes a heat-setting device positioned between two adjacent drive roller assemblies to heat-set the zipper tape conveyed between the two sets.

[0004] This technical solution utilizes the differential movement of the front and rear drive rollers to pre-expand the zipper, and sets a heat setting device between the two sets of drive rollers to heat the zipper, thereby promoting rapid setting of the zipper after pre-expansion.

[0005] However, the defect of this technical solution is that its heat setting device is arranged between two sets of transmission rollers, the heating time is too short, and the pre-expansion setting effect cannot be achieved, and the inner arc of the zipper is difficult to form. Utility Model Content

[0006] The utility model aims to provide a zipper tape pre-expansion device, which overcomes the defects of the prior art of short heating and shaping time and poor pre-expansion and shaping effect.

[0007] In order to achieve the above purpose, the technical solution of the utility model is:

[0008] A zipper tape pre-expansion device comprises a workbench, a feeding device and a pre-expansion device arranged on the workbench, and a discharge device arranged below the workbench; wherein the pre-expansion device is composed of a front pressure wheel group and a rear pressure wheel group, the speed of the front pressure wheel group is greater than that of the rear pressure wheel group, and the zipper tape is conveyed by the rear pressure wheel group toward the front pressure wheel group; the front pressure wheel group comprises a front upper pressure wheel and a front lower pressure wheel which are arranged opposite to each other and roll synchronously, and the rear pressure wheel group comprises a rear upper pressure wheel and a rear lower pressure wheel which are arranged opposite to each other and roll synchronously; the gap between the front upper pressure wheel and the front lower pressure wheel and the gap between the rear upper pressure wheel and the rear lower pressure wheel constitute a pre-expansion channel for the zipper tape, the front upper pressure wheel and the rear upper pressure wheel abut against the upper surface of the zipper tape, and the front lower pressure wheel and the rear lower pressure wheel abut against the lower surface of the zipper tape;

[0009] The feeding device includes a conveyor belt and a pressure plate; the gap between the conveyor belt and the upper surface of the workbench constitutes a zipper belt conveying channel; the conveyor belt conveys the zipper belt to the pre-expansion channel, and the zipper belt is conveyed to the unloading device through the pre-expansion channel; a heating and shaping device is also provided, and the heating and shaping device is arranged below the conveyor belt.

[0010] Two conveyor pressing belts are arranged in parallel and roll synchronously, and the two conveyor pressing belts respectively press against the upper surfaces of the fabrics on both sides of the zipper belt.

[0011] The feeding device is further provided with a synchronous wheel, and the conveying pressure belt is driven by the synchronous wheel. A first lifting mechanism is provided on the synchronous wheel to drive the lifting of the synchronous wheel to control the lifting of the conveying pressure belt.

[0012] A first cylinder is connected to the pressing plate to control its lifting; a second cylinder is connected to the pressing plate to control its forward and backward movement along the zipper tape transmission direction.

[0013] A positioning plate for the zipper tape is arranged on the upper surface of the workbench, and the positioning plate is located below the pressing plate.

[0014] Two front upper pressing wheels are arranged in parallel, respectively pressing against the upper surface of the fabric on both sides of the zipper tape; two front lower pressing wheels are arranged in parallel, respectively pressing against the lower surface of the fabric on both sides of the zipper tape;

[0015] Two rear upper pressing wheels are arranged in parallel, respectively pressing against the upper surfaces of the fabrics on both sides of the zipper tape; two rear lower pressing wheels are correspondingly arranged in parallel, respectively pressing against the lower surfaces of the fabrics on both sides of the zipper tape.

[0016] A second lifting mechanism is provided to drive the front upper pressing wheel and the rear upper pressing wheel to rise and fall relative to the front lower pressing wheel and the rear lower pressing wheel at the same time.

[0017] The unloading device is arranged below the workbench, and includes a discharge cylinder arranged on one side of the workbench and connected to the pre-expansion device, a clamping mechanism, a material receiving platform, and a packaging mechanism arranged on the other side of the workbench. The discharge cylinder is provided with a discharge port under the workbench; a clamping mechanism and a material receiving platform are provided between the discharge port and the packaging mechanism;

[0018] The clamping mechanism is located below the workbench and is slidably arranged between the discharge port and the packaging mechanism. A material receiving platform is provided below the clamping mechanism and is slidable toward or away from the packaging mechanism.

[0019] The material receiving platform is also provided with a pushing plate for pushing the zipper tape packed by the packing mechanism away from the material receiving platform.

[0020] The clamping mechanism includes a rotary cylinder, a finger cylinder and a clamping arm. The finger cylinder is provided on the rotary cylinder. The finger cylinder drives the opening / closing of the clamping arm, and the rotary cylinder controls the rotation of the clamping arm.

[0021] A first slide rail and a slider are provided below the workbench. One side of the slider is connected to the clamping mechanism, and the other side is connected to the first slide rail. The slider is connected to the rotating cylinder of the clamping mechanism.

[0022] A second slide rail is provided below the material receiving platform, and the material receiving platform is provided on the second slide rail;

[0023] A third lifting mechanism is provided to be connected to the material receiving platform, and when the material receiving platform slides toward / away from the packaging mechanism, the material receiving platform is driven to rise / fall.

[0024] The advantages of the utility model are: 1. A conveyor pressure belt is provided in the feeding device, so that the zipper tape can be conveyed smoothly; 2. A pressure plate and a positioning plate are provided before the conveyor pressure belt, so that the zipper tape does not deviate when being conveyed forward; 3. A heating and shaping device is provided below the conveyor pressure belt, so that the zipper tape can obtain a sufficient heating time, and the conveyor pressure belt can prevent the zipper tape from being deformed while being heated. The zipper tape is conveyed forward while being heated, and the fabric fibers of the zipper tape can be fully stretched and maintain a stable shape; 4. The rotating clamping mechanism rotates counterclockwise during transportation after clamping the zipper tape, so that the zipper tape will not be entangled on the clamping arm, so that the zipper tape will not be messy when it falls on the material receiving platform, and it is convenient to pack and organize; 5. The unloading device realizes the automation of collecting and packing the zipper tape, which greatly improves the work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the structure of the utility model Figure 1 ;

[0026] Figure 2 This is a schematic diagram of the structure of the utility model Figure 2 ;

[0027] Figure 3This is a schematic diagram of the structure of the feeding device and pre-expansion device of the utility model;

[0028] Figure 4 It is a structural diagram of the pre-expansion device of the utility model;

[0029] Figure 5 This is a structural diagram of the pressing plate and the positioning plate of the utility model;

[0030] Figure 6 This is a schematic structural diagram of the blanking device of the utility model;

[0031] Figure 7 This is a schematic diagram of the clamping mechanism structure of the utility model Figure 1 ;

[0032] Figure 8 This is a schematic diagram of the clamping mechanism structure of the utility model Figure 2 ;

[0033] Figure 9 It is a diagram of a zipper tape;

[0034] In the figure: 1-workbench; 2-feeding device; 21-conveying pressure belt; 22-pressing plate; 23-positioning plate; 24-first cylinder; 25-second cylinder; 211-synchronizing wheel; 3-pre-expansion device; 31-front pressure roller group; 311-front upper pressure roller; 312-front lower pressure roller; 32-rear pressure roller group; 321-rear upper pressure roller; 322-rear lower pressure roller; 33-second lifting mechanism; 4-unloading device; 41-discharging barrel; 411-discharging port; 42-packing mechanism; 43-clamping mechanism; 431-rotating cylinder; 432-finger cylinder; 433-clamping arm; 44-material receiving platform; 45-pushing plate; 46-first slide rail; 47-second slide rail; 48-third lifting mechanism; 49-slider; 5-zipper tape. DETAILED DESCRIPTION

[0035] The present invention will be further described below with reference to the accompanying drawings, which are for illustrative purposes only and are not to be construed as limiting the present invention.

[0036] To more concisely illustrate this embodiment, some components well known to those skilled in the art but not relevant to the main content of this invention may be omitted from the drawings or descriptions. In addition, for ease of description, some components may be omitted, enlarged, or reduced in size in the drawings, but they do not represent the dimensions or entire structure of the actual product.

[0037] The utility model discloses a zipper tape pre-expansion device, such as Figure 1-8 As shown, it includes a workbench 1, a feeding device 2 and a pre-expansion device 3 arranged on the workbench 1, and a unloading device 4 arranged below the workbench 1.

[0038] Among them, such as Figure 2-4 As shown, the pre-expansion device 3 is composed of a front pressure wheel group 31 and a rear pressure wheel group 32. The speed of the front pressure wheel group 31 is greater than the speed of the rear pressure wheel group 32. This differential setting is effective for Figure 9 The zipper tape 5 shown plays a pre-expansion role. The zipper tape 5 is conveyed from the rear pressure wheel group 32 to the front pressure wheel group 31; Figure 3 、 Figure 4 As shown, the front pressing wheel group 31 includes a front upper pressing wheel 311 and a front lower pressing wheel 312 which are arranged relative to each other and roll synchronously, and the rear pressing wheel group 32 includes a rear upper pressing wheel 321 and a rear lower pressing wheel 322 which are arranged relative to each other and roll synchronously; the gap between the front upper pressing wheel 311 and the front lower pressing wheel 312 and the gap between the rear upper pressing wheel 321 and the rear lower pressing wheel 322 constitute a pre-expansion channel for the zipper tape 5, the front upper pressing wheel 311 and the rear upper pressing wheel 321 are against the upper surface of the zipper tape 5, and the front lower pressing wheel 3 12 and the rear lower pressing wheel 322 are against the lower surface of the zipper tape 5; preferably, two front upper pressing wheels 311 are set in parallel, respectively against the upper surfaces of the fabric on both sides of the zipper tape 5; two front lower pressing wheels 312 are set in parallel accordingly, respectively against the lower surfaces of the fabric on both sides of the zipper tape 5; accordingly, two rear upper pressing wheels 321 are set in parallel, respectively against the upper surfaces of the fabric on both sides of the zipper tape 5; two rear lower pressing wheels 322 are set in parallel accordingly, respectively against the lower surfaces of the fabric on both sides of the zipper tape 5.

[0039] Furthermore, a second lifting mechanism 33 is provided to drive the front upper pressing wheel 311 and the rear upper pressing wheel 321 to rise relative to the front lower pressing wheel 312 and the rear lower pressing wheel 322 when the zipper tape 5 is conveyed from the feeding device 2, that is, to lift the front upper pressing wheel 311 and the rear upper pressing wheel 321 at the same time; when the zipper tape 5 enters between the rear upper pressing wheel 321 and the rear lower pressing wheel 322, the second lifting mechanism 33 drives the front upper pressing wheel 311 and the rear upper pressing wheel 321 to descend relative to the front lower pressing wheel 312 and the rear lower pressing wheel 322 to press the fabric on both sides of the zipper tape 5 and pre-expand the zipper tape 5.

[0040] like Figure 1-3 As shown, the feeding device 2 includes a conveyor belt 21 and a pressure plate 22. The gap between the conveyor belt 21 and the upper surface of the workbench 1 forms a conveying channel for the zipper tape 5. The pressure plate 22 is the component that feeds the zipper tape 5 into the conveying channel of the conveyor belt 21. The pressure plate 22 can move back and forth along the conveying direction of the zipper tape 5 and can be raised and lowered on the upper surface of the workbench 1. A positioning plate 23 for the zipper tape 5 is provided on the upper surface of the workbench 1. The positioning plate 23 is located below the pressure plate 22 to facilitate positioning of the zipper tape 5 when it is placed.

[0041] like Figure 5As shown, a first cylinder 24 is connected to the pressing plate 22 to control its elevation on the upper surface of the workbench 1; a second cylinder 25 is connected to the pressing plate 22 to control its forward and backward movement along the conveying direction of the zipper tape 5. During operation, the zipper tape 5 is placed under the pressing plate 22. The first cylinder 24 drives the pressing plate 22 downward, pressing on the zipper tape 5. The second cylinder 25 drives the pressing plate 22 toward the conveyor belt 21, conveying the zipper tape 5 to the conveying channel below the conveyor belt 21.

[0042] Furthermore, the feeding device 2 is further provided with a synchronous wheel 211, and the conveyor belt 21 is mounted on the synchronous wheel 211 and driven by the synchronous wheel 211. In addition, a first lifting mechanism is provided on the synchronous wheel 211 to drive the raising and lowering of the synchronous wheel 211 to control the raising and lowering of the conveyor belt 21. When the pressing plate 22 conveys the zipper belt 5 toward the conveyor belt 21, the first lifting mechanism drives the synchronous wheel 211 to rise. When the zipper belt 5 enters the conveying channel between the conveyor belt 21 and the workbench 1, the first lifting mechanism drives the synchronous wheel 211 to descend. The two conveyor belts 21 press on the fabric on both sides of the zipper belt 5, conveying the zipper belt 5 to the pre-expansion device 3.

[0043] The conveyor pressure belt 21 then conveys the zipper tape 5 to the pre-expansion channel, and the zipper tape 5 is conveyed to the unloading device 4 through the pre-expansion channel; preferably, two conveyor pressure belts 21 are provided, and the two conveyor pressure belts 21 are arranged in parallel and roll synchronously, and the two conveyor pressure belts 21 respectively press against the upper surface of the fabric on both sides of the zipper tape 5, so that the conveyance of the zipper tape 5 is more stable.

[0044] A heating and shaping device is also provided, which is arranged below the conveyor belt 21. In this way, the zipper tape 5 is slowly heated during the process of being conveyed forward in the conveying channel under the conveyor belt 21, so that the fibers of the fabric on both sides of the zipper tape 5 are fully stretched, making the subsequent pre-expansion more sufficient, the effect better, and the shaping more stable.

[0045] The unloading device 4 is arranged below the workbench 1. Figure 5-8 As shown, the unloading device 4 includes a discharge cylinder 41 arranged on one side of the workbench 1 and connected to the pre-expansion device 3, a clamping mechanism 43, a material receiving platform 44 and a packaging mechanism 42 arranged on the other side of the workbench 1. The discharge cylinder 41 is provided with a discharge port 411 under the workbench; a clamping mechanism 43 and a material receiving platform 44 are arranged between the discharge port 411 and the packaging mechanism 42.

[0046] The clamping mechanism 43 is slidingly arranged under the workbench 1, and a material receiving platform 44 is slidingly arranged under the clamping mechanism 43. The clamping mechanism 43 slides back and forth between the discharge port 411 and the packaging mechanism 42. The zipper tape 5 pre-expanded by the pre-expansion device 3 slides down from the discharge port 411. The clamping mechanism 43 clamps the zipper tape 5 and slides it to the side of the material receiving platform 44 close to the packaging mechanism 42, loosens the zipper tape 5, and falls on the material receiving platform 44. After receiving a certain number of zipper tapes 5, the material receiving platform 44 slides toward the packaging mechanism 42 and sends the zipper tape 5 to the packaging mechanism 42 for packaging. After the zipper tape 5 is packaged, the material receiving platform 44 slides away from the packaging mechanism 42.

[0047] A push plate 45 is also provided on the material receiving platform 44 . The push plate 45 moves back and forth on the upper surface of the material receiving platform 44 in a direction perpendicular to the movement of the clamping mechanism 43 , pushing the packaged zipper tape 5 out from the material receiving platform 44 .

[0048] like Figure 7 、 Figure 8 As shown, the clamping mechanism 43 is a rotatable mechanism, including a rotating cylinder 431, a finger cylinder 432 and a clamping arm 433. The finger cylinder 432 is provided on the rotating cylinder 431, and the finger cylinder 432 drives the opening / closing of the clamping arm 433. The rotating cylinder 431 controls the rotation of the clamping arm 433. The reason for setting the rotating clamping mechanism 43 is to facilitate the transportation of the pre-expanded zipper tape 5. At the discharge port 411, the clamping arm 433 is in a horizontal state. When the zipper tape 5 is ready to be clamped, the finger cylinder 432 drives the clamping arm 433 to open, and the zipper tape 5 is pulled out of the discharge port. When 411 slides down, the finger cylinder 432 drives the clamping arm 433 to close, clamp the zipper tape 5, and slide to the other side of the workbench 1, sliding to a position close to the packaging mechanism 42, or during the sliding process, the rotating cylinder 431 drives the clamping arm 433 to rotate counterclockwise to an upright state and then to a horizontal state, so as to ensure that the zipper tape 5 will not be entangled on the clamping arm 433. When reaching the predetermined position, the finger cylinder 432 drives the clamping arm 433 to open, releasing the zipper tape 5 to the material receiving platform 44, and then sliding back to the discharge port 411, waiting to clamp the next zipper tape 5.

[0049] Preferably, a first slide rail 46 and a slider 49 are provided below the workbench 1 . One side of the slider 49 is connected to the clamping mechanism 43 , and the other side is connected to the first slide rail 46 . The slider 49 is connected to the rotary cylinder 431 of the clamping mechanism 43 .

[0050] A second slide rail 47 is provided below the material receiving platform 44 , and the material receiving platform 44 is provided on the second slide rail 47 ;

[0051] Furthermore, a third lifting mechanism 48 is provided to be connected to the material receiving platform 44. When the material receiving platform 44 receives a preset number of zipper tapes 5 from the clamping mechanism 43, the material receiving platform 44 slides toward the packaging mechanism 42. When it reaches the packaging mechanism 42, or during the sliding process, the third lifting mechanism 48 drives the material receiving platform 44 to rise, and sends the zipper tape 5 on the material receiving platform 44 to the packaging mechanism 42 for packaging. After the packaging is completed, the material receiving platform slides away from the packaging mechanism 42, and the third lifting mechanism 48 drives the material receiving platform 44 to descend and return to its original position, and the pushing plate 45 pushes the zipper tape 5 on the material receiving platform 44 out.

[0052] The above description is only a preferred embodiment of the present invention and is not intended to limit the scope of implementation of the present invention. In other words, any equivalent changes and modifications made within the scope of the patent application of the present invention should fall within the technical scope of the present invention.

Claims

1. A zipper tape pre-expansion device, comprising a workbench (1), a feeding device (2) and a pre-expansion device (3) arranged on the workbench (1), and a discharge device (4) arranged below the workbench (1); wherein, The pre-expansion device (3) is composed of a front pressing wheel group (31) and a rear pressing wheel group (32). The speed of the front pressing wheel group (31) is greater than that of the rear pressing wheel group (32). The zipper tape (5) is conveyed by the rear pressing wheel group (32) toward the front pressing wheel group (31). The front pressing wheel group (31) includes a front upper pressing wheel (311) and a front lower pressing wheel (312) that are arranged relative to each other and roll synchronously. The rear pressing wheel group (32) includes a rear lower pressing wheel (311) and a rear lower pressing wheel (312) that are arranged relative to each other and roll synchronously. An upper pressing wheel (321) and a rear lower pressing wheel (322); a gap between the front upper pressing wheel (311) and the front lower pressing wheel (312) and a gap between the rear upper pressing wheel (321) and the rear lower pressing wheel (322) form a pre-expansion channel for the zipper tape (5); the front upper pressing wheel (311) and the rear upper pressing wheel (321) abut against the upper surface of the zipper tape (5); and the front lower pressing wheel (312) and the rear lower pressing wheel (322) abut against the lower surface of the zipper tape (5); The invention is characterized in that: the feeding device (2) includes a conveying pressing belt (21) and a pressing plate (22); the gap between the conveying pressing belt (21) and the upper surface of the workbench (1) constitutes a conveying channel for the zipper tape (5); the conveying pressing belt (21) conveys the zipper tape (5) to the pre-expansion channel, and the zipper tape (5) is conveyed to the unloading device (4) through the pre-expansion channel; and a heating and shaping device is also provided, and the heating and shaping device is provided below the conveying pressing belt (21).

2. The zipper tape pre-expansion device according to claim 1, characterized in that: Two conveyor pressing belts (21) are provided, and the two conveyor pressing belts (21) are arranged in parallel and roll synchronously, and the two conveyor pressing belts (21) respectively abut against the upper surfaces of the fabrics on both sides of the zipper belt (5).

3. The zipper tape pre-expansion device according to claim 2, characterized in that: The feeding device (2) is further provided with a synchronous wheel (211), and the conveying pressing belt (21) is driven by the synchronous wheel (211). A first lifting mechanism is provided on the synchronous wheel (211) to drive the lifting of the synchronous wheel (211) to control the lifting of the conveying pressing belt (21).

4. The zipper tape pre-expansion device according to claim 1, characterized in that: A first air cylinder (24) is connected to the pressing plate (22) to control its lifting; a second air cylinder (25) is connected to the pressing plate (22) to control its forward and backward movement along the conveying direction of the zipper tape (5).

5. The zipper tape pre-expansion device according to claim 4, characterized in that: A positioning plate (23) for the zipper tape (5) is provided on the upper surface of the workbench (1), and the positioning plate (23) is located below the pressing plate (22).

6. The zipper tape pre-expansion device according to claim 1, characterized in that: Two front upper pressing wheels (311) are arranged in parallel, respectively abutting against the upper surfaces of the fabrics on both sides of the zipper tape (5); two front lower pressing wheels (312) are arranged in parallel, respectively abutting against the lower surfaces of the fabrics on both sides of the zipper tape (5); Two rear upper pressing wheels (321) are arranged in parallel, respectively abutting against the upper surfaces of the fabric on both sides of the zipper tape (5); and two rear lower pressing wheels (322) are arranged in parallel, respectively abutting against the lower surfaces of the fabric on both sides of the zipper tape (5).

7. The zipper tape pre-expansion device according to claim 6, characterized in that: A second lifting mechanism (33) is provided to drive the front upper pressing wheel (311) and the rear upper pressing wheel (321) to rise and fall relative to the front lower pressing wheel (312) and the rear lower pressing wheel (322) at the same time.

8. The zipper tape pre-expansion device according to claim 1, characterized in that: The unloading device (4) is arranged below the workbench (1), and comprises a discharge cylinder (41) arranged on one side of the workbench (1) and connected to the pre-expansion device (3), a clamping mechanism (43), a material receiving platform (44), and a packaging mechanism (42) arranged on the other side of the workbench (1). The discharge cylinder (41) is provided with a discharge port (411) below the workbench; the clamping mechanism (43) and the material receiving platform (44) are provided between the discharge port (411) and the packaging mechanism (42); The clamping mechanism (43) is located below the workbench (1) and is slidably disposed between the discharge port (411) and the packaging mechanism (42). A material receiving platform (44) is provided below the clamping mechanism (43) and is slidably disposed close to or away from the packaging mechanism (42). The material receiving platform (44) is also provided with a pushing plate (45) for pushing the zipper tape (5) packaged by the packaging mechanism (42) away from the material receiving platform (44).

9. The zipper tape pre-expansion device according to claim 8, characterized in that: The clamping mechanism (43) includes a rotating cylinder (431), a finger cylinder (432) and a clamping arm (433). The finger cylinder (432) is provided on the rotating cylinder (431). The finger cylinder (432) drives the opening / closing of the clamping arm (433). The rotating cylinder (431) controls the rotation of the clamping arm (433). A first slide rail (46) is provided below the workbench (1), and a slider (49) is provided. One side of the slider (49) is connected to the clamping mechanism (43), and the other side is connected to the first slide rail (46). The slider (49) is connected to the rotating cylinder (431) of the clamping mechanism (43).

10. The zipper tape pre-expansion device according to claim 8, characterized in that: A second slide rail (47) is provided below the material receiving platform (44), and the material receiving platform (44) is provided on the second slide rail (47); A third lifting mechanism (48) is provided and connected to the material receiving platform (44), and when the material receiving platform (44) slides toward / away from the packaging mechanism (42), the material receiving platform (44) is driven to rise / fall.

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