Mechanical hand for threading a zipper

Abstract

The application relates to a mechanical hand for threading a zipper, which comprises a base, a first sliding seat slidably connected to the base, a second sliding seat slidably connected to the base and parallel to the first sliding seat, a first driving assembly for driving the two sliding seats to approach or move away from each other, a first clamping arm arranged on the two sliding seats, a second clamping arm slidably arranged on the two sliding seats, and a second driving assembly for driving the two clamping arms to make clamping or releasing actions, wherein the sliding directions of the two sliding seats are perpendicular to the clamping directions of the two clamping arms. The application has the advantages of compact structure and simple action, and the simple action can greatly reduce the difficulty of later maintenance.

Description

TECHNICAL FIELD

[0001] The present application relates to a zipper threading device, in particular to a mechanical hand for zipper threading. BACKGROUND

[0002] The zipper includes two tapes and a zipper head. In the production process of the zipper, the zipper head needs to be assembled with the two tapes, which is called threading in the industry. In order to improve production efficiency, zipper manufacturers now use automatic equipment to perform the threading process. The threading device generally includes a zipper head fixing clamp, a zipper head feeding assembly, a tape feeding assembly, a tape clamping mechanical hand, and a moving table for driving the mechanical hand to move back and forth. The mechanical hand clamps the heads of the two tapes on the tape feeding assembly, moves the front end of the tape towards the zipper head on the zipper head fixing clamp, and continues to move backward through the zipper head, driving the two tapes through the zipper head. The current mechanical hand mainly has two clamping actions, the first clamping action is used to clamp the two tapes, and the second clamping action is used to adjust the distance between the two tapes. In order to achieve the above two actions, the existing mechanical hand structure is too bulky, which increases the production cost of the equipment, and the structure is complex, which makes the later maintenance more difficult.

[0003] At the same time, due to the different widths of different zippers, the current tape clamping mechanical hand does not have the function of width adjustment, and can only be customized for one type of zipper, which greatly increases the production cost of the zipper manufacturer. SUMMARY

[0004] The present application provides a mechanical hand for zipper threading; solves the problem of bulky structure in the prior art, which increases the difficulty of later maintenance.

[0005] The above technical problems of the present application are mainly solved by the following technical scheme: a mechanical hand for zipper threading, comprising a base;

[0006] A first sliding seat is slidably connected to the base;

[0007] A second sliding seat is slidably connected to the base and has a sliding direction parallel to the first sliding seat;

[0008] A first driving assembly drives the two sliding seats to move closer or farther apart;

[0009] A first clamping arm is provided on the two sliding seats;

[0010] A second clamping arm is slidably provided on the two sliding seats;

[0011] A second driving assembly drives the two clamping arms to perform clamping or releasing actions;

[0012] The sliding directions of the two sliding seats are perpendicular to the clamping directions of the two clamping arms. The first clamping arm and the second clamping arm are used for clamping the fixed chains, and the two sliding seats are close to or away from each other, thereby synchronously driving the two chains to be close to or away from each other, so as to adjust the distance between the chains.

[0013] Further, the first sliding seat is provided with a first bending part bent to the side of the second sliding seat, and the outer end of the first bending part is fixedly connected with a first mounting plate; the second sliding seat is provided with a second bending part bent to the side of the first sliding seat, and the outer end of the second bending part is fixedly connected with a second mounting plate; when the distance between the two sliding seats increases, the distance between the two mounting plates is synchronously reduced; the first driving assembly is installed between the two sliding seats, and the first reset spring is connected between the two sliding seats and the base, and the first reset spring can push the two sliding seats close to each other. Since the first driving assembly is located in the region between the two sliding seats, the volume can be reduced to a certain extent, and the first reset spring can reliably control the reciprocating movement of the two sliding seats.

[0014] Further, the first driving assembly comprises a cylinder provided on the base, a rhombic four-bar linkage assembly having one end hinged to the base, and a connecting rod connecting the cylinder piston rod and the four-bar linkage assembly, the base is provided with a first limiting part, and the connecting rod is provided with a first limiting block capable of limiting abutment with the first limiting part; the four-bar linkage assembly comprises a first hinged part, a second hinged part, a third hinged part and a fourth hinged part, the first hinged part is hinged to the base, the third hinged part is hinged to the connecting rod, and the second hinged part and the fourth hinged part are respectively abutted with the inner sides of the first sliding seat and the second sliding seat. The cylinder can control the distance between the first hinged part and the third hinged part, when the cylinder is extended, the distance between the first hinged part and the third hinged part is reduced, and the distance between the second hinged part and the fourth hinged part is synchronously increased, thereby achieving the effect of pushing the sliding seat to slide outward. When the first limiting block abuts against the first limiting part, the sliding seat stops sliding.

[0015] Further, the connecting rod is provided with an external thread, and the first limiting block is screwed on the external thread. By rotating the first limiting block, the position of the first limiting block on the connecting rod can be conveniently adjusted. When the first limiting block moves away from the first limiting part, the distance between the two chains clamped by the present application after being close to each other is narrower; on the contrary, the distance between the two chains clamped by the present application after being close to each other is wider.

[0016] Further, the second driving assembly is an electromagnet assembly fixed on two mounting plates, the first clamping arm is fixedly installed on the mounting plate, and the second limiting part for limiting the second clamping arm is also arranged on the two mounting plates correspondingly, and the second clamping arm is made of ferromagnetic material; the second reset spring is connected between the electromagnet assembly and the second clamping arm. First, the clamping action of the two clamping arms controlled by the electromagnet assembly has the advantages of compact structure and simple action compared with other mechanical transmission structures, and the simple action can greatly reduce the difficulty of later maintenance.

[0017] Therefore, the present application has the following characteristics compared with the prior art: 1. The connecting mounting plate is fixed by arranging the bending part on the sliding seat, which realizes the effect that the change of the distance between the two sliding seats is opposite to the change of the distance between the two mounting plates, so that the first driving assembly can be installed in the area between the two sliding seats, thereby reducing the volume to a certain extent; 2. The position of the first limiting block on the connecting rod can be adjusted conveniently by rotating the first limiting block, when the first limiting block moves away from the first limiting part, the distance between the two clamping arms after being clamped by the present application is narrower; on the contrary, the distance between the two clamping arms after being clamped by the present application is wider; 3. First, the clamping action of the two clamping arms controlled by the electromagnet assembly has the advantages of compact structure and simple action compared with other mechanical transmission structures, and the simple action can greatly reduce the difficulty of later maintenance. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a structural schematic diagram of the present application; Figure 1 is a structural schematic diagram of the present application;

[0019] Figure 3 is a structural schematic diagram of the two clamping arms of the present application; Figure 2 Figure 4 is a structural schematic diagram of the first driving assembly of the present application when the cylinder is not extended;

[0020] Figure 3 Figure 5 is a structural schematic diagram of the first driving assembly of the present application when the cylinder is extended.

[0021] Figure 6 is a structural schematic diagram of the first driving assembly of the present application when the cylinder is extended. Figure 4 DETAILED DESCRIPTION

[0022] The technical solutions of the present application will be further specifically described below by combining with the drawings.

[0023] ​​In the description of the present application, it needs to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0024] Embodiment 1: see Figure 1 and Figure 2 A mechanical hand for threading a zipper, comprising a base 100;

[0025] A first sliding seat 201 is slidably connected to the base;

[0026] A second sliding seat 202 is slidably connected to the base and the sliding direction is parallel to that of the first sliding seat;

[0027] A first driving assembly 300 drives the two sliding seats to move closer or farther apart;

[0028] A first clamping arm 401 is arranged on the two sliding seats;

[0029] A second clamping arm 402 is slidably arranged on the two sliding seats;

[0030] A second driving assembly 500 drives the two clamping arms to perform clamping or releasing actions;

[0031] The sliding directions of the two sliding seats are perpendicular to the clamping directions of the two clamping arms. The first and second clamping arms are used to clamp and fix the chain belts, and the mutual approach or separation of the two sliding seats can synchronously drive the two chain belts to approach or separate, thereby adjusting the spacing between the chain belts.

[0032] see Figure 1 The first sliding seat is provided with a first bending portion 211 bent towards the side of the second sliding seat, and the outer end of the first bending portion is fixedly connected with a first mounting plate 221. The second sliding seat is provided with a second bending portion 212 bent towards the side of the first sliding seat, and the outer end of the second bending portion is fixedly connected with a second mounting plate 222. When the spacing between the two sliding seats increases, the spacing between the two mounting plates synchronously decreases. The first driving assembly is installed between the two sliding seats, and the first return spring 130 is connected between the two sliding seats and the base, which can push the two sliding seats closer. Since the first driving assembly is located in the area between the two sliding seats, the volume can be reduced to a certain extent, and the first return spring can reliably control the reciprocating movement of the two sliding seats.

[0033] see Figure 3and Figure 4 The first driving assembly comprises a cylinder 310 arranged on the base, a rhombic four-bar linkage assembly 320 hingedly connected to the base at one end, and a connecting rod 330 connecting the cylinder piston rod and the four-bar linkage assembly, the base is provided with a first limiting part 110, and the connecting rod is provided with a first limiting block 331 capable of being limited and abutted by the first limiting part; the four-bar linkage assembly comprises a first hinged part 321, a second hinged part 322, a third hinged part 323 and a fourth hinged part 324, the first hinged part is hingedly connected to the base, the third hinged part is hingedly connected to the connecting rod, and the second hinged part and the fourth hinged part are respectively abutted with the inner sides of the first sliding seat and the second sliding seat. The cylinder can control the distance between the first hinged part and the third hinged part, when the cylinder is extended, the distance between the first hinged part and the third hinged part is reduced, the distance between the second hinged part and the fourth hinged part is synchronously increased, and the effect of pushing the sliding seat to slide outward is achieved. When the first limiting block is abutted with the first limiting part, the sliding seat stops sliding.

[0034] See Figure 3 The connecting rod is provided with an external thread, and the first limiting block is screwed on the external thread. By rotating the first limiting block, the position of the first limiting block on the connecting rod can be conveniently adjusted. When the first limiting block moves away from the first limiting part, the closer the two chain belts clamped by the embodiment are, the narrower the distance between the two chain belts is; on the contrary, the closer the two chain belts clamped by the embodiment are, the wider the distance between the two chain belts is.

[0035] See Figure 3 The second hinged part and the fourth hinged part are rotatably connected with a roller 340, and the roller is rotatably abutted with the inner sides of the two sliding seats.

[0036] See Figure 2 The second driving assembly is an electromagnet assembly fixed on the two mounting plates, the first clamping arm is fixedly installed on the mounting plate, the mounting plate is provided with a sliding rail 230 for guiding the sliding of the second clamping arm, and the two mounting plates are further provided with a second limiting part 240 capable of limiting the second clamping arm. The second clamping arm is made of ferromagnetic material; a second return spring 250 is connected between the electromagnet assembly and the second clamping arm. First, the clamping action of the two clamping arms controlled by the electromagnet assembly has the advantages of compact structure and simple action compared with other mechanical transmission structures, and the simple action can greatly reduce the difficulty of later maintenance.

[0037] See Figure 1 The two sides of the base are respectively provided with a mounting block 120, two parallel distributed light rods 130 are connected between the two mounting blocks, the two sliding seats are simultaneously in sliding fit with the two light rods, and the middle part of the light rod is provided with a thickening part 131 for limiting; the inner side wall of the mounting block is provided with a positioning groove 121 for installing and positioning the first return spring.

[0038] It will be apparent to those skilled in the art that various modifications can be made to the specific embodiments described above without departing from the scope of the present application. All such modifications are intended to be included within the scope of the present claims.

Claims

1. A mechanical hand for threading a zipper, characterized by: The base; The first sliding seat is connected to the base; The second sliding seat is connected to the base and the sliding direction is parallel to the first sliding seat; The first driving assembly drives the two sliding seats to approach or move away; The first clamping arm is arranged on the two sliding seats; The second clamping arm is arranged on the two sliding seats; The second driving assembly drives the two clamping arms to clamp or release; The sliding direction of the two sliding seats is perpendicular to the clamping direction of the two clamping arms; the first bending part is arranged on the first sliding seat and bends to the side of the second sliding seat; the outer end of the first bending part is fixedly connected with the first mounting plate; the second bending part is arranged on the second sliding seat and bends to the side of the first sliding seat; the outer end of the second bending part is fixedly connected with the second mounting plate; when the distance between the two sliding seats increases, the distance between the two mounting plates decreases synchronously; the first driving assembly is arranged between the two sliding seats; the first reset spring is arranged between the two sliding seats and the base; the first reset spring can push the two sliding seats to approach each other; The first driving assembly comprises a cylinder arranged on the base, a rhombic four-link assembly hingedly connected to the base, and a connecting rod connecting the piston rod of the cylinder and the four-link assembly; the base is provided with a first limiting part; the connecting rod is provided with a first limiting block capable of limiting abutment with the first limiting part; the four-link assembly comprises a first hinged part, a second hinged part, a third hinged part and a fourth hinged part; the first hinged part is hingedly connected to the base; the third hinged part is hingedly connected to the connecting rod; the second hinged part and the fourth hinged part are respectively abutted with the inner sides of the first sliding seat and the second sliding seat; The second driving assembly is an electromagnet assembly fixed on the two mounting plates; the first clamping arm is fixedly arranged on the mounting plate; the second limiting part capable of limiting the second clamping arm is arranged on the two mounting plates; the second clamping arm is made of ferromagnetic material; the second reset spring is arranged between the electromagnet assembly and the second clamping arm.

2. The mechanical hand for threading a zipper according to claim 1, wherein: The connecting rod is provided with an external thread; the first limiting block is screwed on the external thread.

3. The mechanical hand for threading a zipper according to claim 1 or 2, characterized in that: The second hinged part and the fourth hinged part are rotatably connected with rollers; the rollers are rotatably abutted with the inner sides of the two sliding seats.

4. The mechanical hand for threading a zipper according to claim 1, wherein: The base is provided with two mounting blocks on both sides; the two mounting blocks are connected with two parallel light rods; the two sliding seats are slidably connected with the two light rods; the middle part of the light rod is provided with a thickening part for limiting; the inner side wall of the mounting block is provided with a positioning groove for positioning the first reset spring.

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