Pull head mold of pull head without pendant

Abstract

The utility model belongs to the field of zipper machines, and relates to a puller die of a pendant-free puller, which comprises a die holder, the upper part of the die holder is provided with a mounting cavity, the upper end of the mounting cavity is open, two puller clamps are rotatably arranged in the mounting cavity, grooves are formed in the opposite sides of the upper ends of the two puller clamps, and the two grooves form a clamping groove; the die holder is further provided with a puller clamp driving device for driving the puller clamps to perform clamping action, spring grooves are formed in the opposite sides of the two puller clamps, compression springs are arranged in the spring grooves, and the compression springs abut between the spring grooves and the side wall of the mounting cavity and always apply force for the two puller clamps to be close to each other. Limiting grooves are formed in the middles of the opposite sides of the two puller clamps, limiting barrier strips are arranged in the limiting grooves, limiting barrier strip mounting grooves are formed in the die holder, and the device has the advantages that the puller without the pendant can be fixed, and the puller can be stable in the conveying and zipper penetrating processes.

Description

Technical Field

[0001] The present invention belongs to the field of zipper machines and relates to a pull head mold without hanging parts for a pull head. Technical Background

[0002] A zipper machine is an automated device that separates the chain tape, then puts on the pull head, and finally combines the chain tape. During the process of putting on the pull head, a pull head mold is required to fix the pull head and convey it to a set position. Since a thrust will be generated on the pull head during the chain threading process, the pull head mold needs to fix the pull head to prevent the pull head from falling off or dropping from the mold. Traditional pull heads all have hanging parts, and the effect of fixing the pull head is indirectly achieved by fixing the hanging parts. However, according to special requirements, in some places, we need to use pull heads without hanging parts, and the traditional pull head mold cannot fix the pull head well. Therefore, during the process of conveying the pull head, the pull head is prone to jumping or flipping, and during the chain threading process, it is prone to falling off. Summary of the Invention

[0003] According to the above problems, the present utility model provides a pull head mold for a pull head without hanging parts, which has the advantages of being able to fix the pull head without hanging parts and enabling the pull head to be stable during both the conveying and chain threading processes.

[0004] The object of the present invention is achieved as follows:

[0005] A pull head mold for a pull head without hanging parts includes a mold base. An installation cavity is provided in the upper part of the mold base, and the upper end of the installation cavity is open. Two pull head clamps are rotatably arranged in the installation cavity. Grooves are formed on the opposite sides of the upper ends of the two pull head clamps, and the two grooves form a clamping groove.

[0006] The mold base is further provided with a pull head clamp driving device for driving the pull head clamps to perform a clamping action.

[0007] Through the arrangement of the clamping groove and the pull head clamp driving device, after the pull head without hanging parts enters the clamping groove, the pull head can be clamped by the pull head clamp driving device, thereby achieving the effect of stabilizing the pull head and preventing phenomena such as jumping and falling off during the conveying and chain threading processes.

[0008] The present utility model is further provided as follows: Spring grooves are formed on the opposite sides of the two pull head clamps, and compression springs are arranged in the spring grooves. The compression springs abut between the spring grooves and the side walls of the installation cavity and always give the two pull head clamps a force to approach each other.

[0009] Through the arrangement of the spring grooves and the compression springs, after the pull head enters the clamping groove, a clamping force can always be stably given to the pull head, and this clamping force is flexible, will not affect the clamping effect due to the size of the pull head, and will not damage the pull head.

[0010] The present utility model is further configured such that: a limiting groove is formed in the middle of the opposite sides of the two pull head clamps, a limiting bar is arranged in the limiting groove, and a limiting bar mounting groove is formed on the die base.

[0011] Since the spring is a vulnerable part, during long-term use, the spring is prone to aging and damage. When one side of the spring is aged and damaged, after the ejector pin opens the clamping groove to allow the pull head to enter, under the extrusion of the spring on the other side, it will severely shift towards the side of the damaged spring. In this case, when threading the chain, it is very easy to damage the chain threading equipment, resulting in high maintenance costs. Through the setting of the limiting bar, even if one side of the spring is aged and damaged, its deviation amount will be limited by the limiting bar, which can reduce the damage to the subsequent chain threading equipment.

[0012] The present utility model is further configured such that: the limiting bar is arranged on the center line of the die base.

[0013] The present utility model is further configured such that: the lower end of the pull head clamp is rotatably connected to the die base, and the lower ends of the two pull head clamps are arranged at intervals to form a tapered drive groove that is smaller at the top and larger at the bottom.

[0014] Through the setting of the inverted tapered drive groove, the opening size of the clamping groove can be controlled by controlling the rising amount of the ejector pin.

[0015] The present utility model is further configured such that: the pull head clamp driving device includes a thimble cylinder, the extending end of the thimble cylinder is connected with a thimble, the thimble is vertically arranged and extends upward into the drive groove, and when the thimble moves upward, it can drive the two pull head clamps to separate.

[0016] When the thimble cylinder drives the thimble to rise, the clamping groove is opened. When the thimble cylinder drives the thimble to descend, the pull head clamp is reset and clamps the pull head under the action of the compression spring.

[0017] The present utility model is further configured such that: the extending end of the thimble cylinder is connected with a cross bar, and the other end of the cross bar is fixedly connected to the lower end of the thimble.

[0018] Through the setting of the cross bar, the thimble cylinder can be arranged on the side of the die base, thereby reducing the length of the equipment and making the installation more diverse, and the position of the thimble cylinder can be changed according to the layout requirements.

[0019] The present utility model is further configured such that: the pull head clamp driving device includes clamping cylinders respectively arranged on both sides of the two pull head clamps, and the two clamping cylinders drive the pull head clamp to perform a clamping action.

[0020] The prominent and beneficial technical effects of the present utility model compared with the prior art are: through the setting of the clamping groove and the pull head clamp driving device, after the pull head without a hanging part enters the clamping groove, the pull head can be clamped through the pull head clamp driving device, thereby achieving the effect of stabilizing the pull head and preventing phenomena such as jumping and falling off during transportation and chain threading. Brief Description of the Drawings

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0022] Figure 1 It is a structural schematic diagram of a slider die.

[0023] Figure 2 It is Figure 1 an enlarged view of part A of

[0024] Figure 3 It is one of the internal structural schematic diagrams of the slider die.

[0025] Figure 4 It is another internal structural schematic diagram of the slider die.

[0026] Figure 5 It is a structural schematic diagram of a slider clamp and a limit bar.

[0027] 1 - die holder; 2 - installation cavity; 3 - slider clamp; 4 - clamping groove; 5 - spring groove; 6 - compression spring; 7 - limit groove; 8 - limit bar; 9 - installation groove; 10 - driving groove; 11 - ejector pin; 12 - ejector pin cylinder; 13 - cross bar. Detailed Embodiments

[0028] To make the objectives, technical solutions, and advantages of the present invention clearer, the following will describe the technical solutions of the present invention in detail. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other implementation manners obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0029] A slider die for a non - hanging slider includes a die holder 1. An installation cavity 2 is provided in the upper part of the die holder 1. The upper end of the installation cavity 2 is open. Two slider clamps 3 are rotatably arranged in the installation cavity 2. Grooves are formed on the opposite sides of the upper ends of the two slider clamps 3, and the two grooves form a clamping groove 4;

[0030] The die holder 1 is also provided with a slider clamp driving device for driving the slider clamp 3 to perform a clamping action.

[0031] Through the arrangement of the clamping groove 4 and the pull head clamping device, after the pull head without a hanging part enters the clamping groove 4, the pull head can be clamped through the pull head clamping device, so as to achieve the effect of stabilizing the pull head and prevent phenomena such as jumping and falling off during the conveying and chain threading processes.

[0032] The present utility model is further arranged as follows: Spring grooves 5 are formed on the opposite sides of the two pull head clamps 3, compression springs 6 are arranged in the spring grooves 5, and the compression springs 6 abut between the spring grooves 5 and the side walls of the installation cavity 2 and always give the two pull head clamps 3 a force to approach each other.

[0033] Through the arrangement of the spring grooves 5 and the compression springs 6, after the pull head enters the clamping groove 4, a clamping force can always be stably applied to the pull head, and this clamping force is flexible, will not affect the clamping effect due to the size of the pull head, and will not damage the pull head.

[0034] The present utility model is further arranged as follows: Limiting grooves 7 are formed in the middle of the opposite sides of the two pull head clamps 3, limiting bars 8 are arranged in the limiting grooves 7, and limiting bar installation grooves 9 are formed on the die base.

[0035] Since the spring is a vulnerable part, it is easy to age and damage during long-term use. When one side of the spring ages and is damaged, after the ejector pin opens the clamping groove and the pull head enters, under the extrusion of the spring on the other side, it will seriously deviate towards the damaged spring side. In this case, when threading the chain, it is very easy to damage the chain threading equipment, resulting in high maintenance costs. Through the arrangement of the limiting bar 8, even if one side of the spring ages and is damaged, its deviation amount will be limited by the limiting bar 8, which can reduce the damage to the subsequent chain threading equipment.

[0036] The present utility model is further arranged as follows: The limiting bar 8 is arranged on the center line of the die base.

[0037] The present utility model is further arranged as follows: The lower ends of the pull head clamps 3 are rotatably connected to the die base 1, and the lower ends of the two pull head clamps 3 are spaced apart to form an inverted conical drive groove 10 that is smaller at the top and larger at the bottom.

[0038] Through the arrangement of the inverted conical drive groove 10, the size of the opening of the clamping groove can be controlled by controlling the rising amount of the ejector pin 11.

[0039] The present utility model is further arranged as follows: The pull head clamping device includes a thimble cylinder 12, the extending end of the thimble cylinder 12 is connected with a thimble 11, the thimble 11 is vertically arranged and extends upward into the drive groove 10, and when the thimble 11 moves upward, it can drive the two pull head clamps 3 to separate.

[0040] When the thimble cylinder 12 drives the thimble 11 to rise, the clamping groove is opened. When the thimble cylinder drives the thimble to descend, the pull head clamps 3 reset and clamp the pull head under the action of the compression spring 6.

[0041] The utility model is further arranged such that a cross bar 13 is connected to the extending end of the thimble cylinder 12, and the other end of the cross bar 13 is fixedly connected to the lower end of the thimble 11.

[0042] Through the arrangement of the cross bar 13, the thimble cylinder 12 can be arranged on the side of the die base, thereby reducing the length of the equipment and making the installation more diversified, and the position of the thimble cylinder can be changed according to the layout requirements.

[0043] Embodiment 2: This embodiment is substantially the same as Embodiment 1, except that the pull head clamp driving device includes clamping cylinders respectively arranged on both sides of the two pull head clamps, and the two clamping cylinders drive the pull head clamps to perform a clamping action. There are many ways to clamp the pull head clamp, not limited to the above two. Any other way to clamp the pull head clamp belongs to the pull head clamp driving device and is within the protection scope of this patent.

[0044] The present invention has the characteristic of being able to fix the pull head without a hanging part, so that the pull head can be stable during the conveying and chain threading processes.

[0045] The above embodiments are only preferred embodiments of the present invention, and do not limit the protection scope of the present invention accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. A puller die without a hanging part, comprising a die base, characterized in that, The upper part of the die base is provided with an installation cavity. The upper end of the installation cavity is open. Two pull head clamps are rotatably arranged in the installation cavity. Grooves are formed on the opposite sides of the upper ends of the two pull head clamps, and the two grooves form a clamping groove. The die base is also provided with a pull head clamp driving device for driving the pull head clamps to perform a clamping action.

2. The puller die without a hanging part according to claim 1, characterized in that: Spring grooves are formed on the opposite sides of the two pull head clamps. Compression springs are arranged in the spring grooves. The compression springs abut between the spring grooves and the side walls of the installation cavity and always give the two pull head clamps a force to approach each other.

3. The puller die without a hanging piece according to claim 2, wherein: Limit grooves are opened in the middle of the opposite sides of the two pull head clamps. Limit stop bars are arranged in the limit grooves. Limit stop bar installation grooves are formed on the die base.

4. The pull head mold without a hanging part according to claim 3, characterized in that: The limit stop bar is arranged on the center line of the die base.

5. The puller die without a hanging part according to claim 1, characterized in that: The lower ends of the pull head clamps are rotatably connected to the die base. The lower ends of the two pull head clamps are arranged at intervals, forming a conical driving groove that is smaller at the top and larger at the bottom.

6. The pull head mold without a hanging part according to claim 5, characterized in that: The pull head clamp driving device includes a thimble cylinder. The extending end of the thimble cylinder is connected with a thimble. The thimble is arranged vertically and extends upward into the driving groove. When the thimble moves upward, the two pull head clamps can be driven to separate.

7. The pull head mold without a hanging part according to claim 6, characterized in that: The extending end of the thimble cylinder is connected with a cross bar, and the other end of the cross bar is fixedly connected with the lower end of the thimble.

8. A pull head mold without a hanging part according to claim 1, characterized in that: The pull head clamp driving device includes clamping cylinders respectively arranged on both sides of the two pull head clamps. The two clamping cylinders drive the pull head clamps to perform a clamping action.

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