An automatic cutting device for zipper head injection molding

Abstract

An automatic cutting device for zipper head injection molding includes a bracket for placing a whole piece of glue-injected zipper head, a manipulator for clamping the whole piece of glue-injected zipper head, a power drive mechanism for pulling the manipulator to move along the center line direction of the center glue stick of the whole piece of glue-injected zipper head, and a cutting mechanism for cutting the glue-injected zipper head from the center glue stick, the manipulator is clamped on the center glue stick of the whole piece of glue-injected zipper head, the power drive mechanism is connected to the manipulator, the cutting mechanism is arranged on the side of the manipulator, the manipulator clamps the glue-injected zipper heads one by one to the cutting mechanism, and the end of the glue tail of the glue-injected zipper head is in contact with the vertical plane where the cutting line of the cutting mechanism is located. The automatic cutting device of the present invention can automatically cut the whole piece of glue-injected zipper head, and the cutting efficiency is greatly improved, which can meet the large-scale production of glue-injected zipper heads.

Description

Technical Field

[0001] The invention relates to the field of zipper manufacturing equipment, and more specifically to an automatic cutting device for zipper head glue injection molding. Background Art

[0002] The zipper head mainly includes a slider body and a pull tab, wherein the slider body includes an upper wing, a lower wing and a chain column, the upper wing and the lower wing are connected by the chain column to form a Y-shaped channel for the chain teeth to pass through, and a connection hole is provided at the bottom of the pull tab to match and connect to the top of the upper wing. At present, many zipper head manufacturers have injected rubber or silicone at the tail end of the pull tab, which can increase the friction between the pull tab and the consumer, making it easier for the consumer to pull and close; on the other hand, it can be customized according to consumer needs to improve the aesthetics of the zipper head.

[0003] The traditional production process of this type of glue-injected zipper head is as follows: first, the zipper heads to be injected are placed one by one in the core of the injection mold; then the injection mold is pushed under the injection molding machine head for injection; then the injection mold is pulled out after the injection is completed, and the entire piece of glue-injected zipper head is demoulded manually. During demoulding, the glue-injected zipper heads need to be separated from the core mold of the injection mold one by one. After demoulding, the entire piece of glue-injected zipper head is Figure 6 As shown, a plurality of glue-injected zipper sliders B are symmetrically and evenly bonded on both sides of a central glue stick A, and the glue tail end of the glue-injected zipper slider B has a connection portion C with the central glue stick A; and finally, each glue-injected zipper slider is cut off from the central glue stick by manual shearing. Among them, the manual shearing of the glue tail end of the glue-injected zipper slider is not only labor-intensive and extremely inefficient, but also has uneven shearing quality, which is difficult to meet the needs of mass production of glue-injected sliders. Summary of the invention

[0004] The invention provides an automatic cutting device for glue injection molding of zipper heads, so as to solve the shortcomings of the existing manual shearing of the glue tail end of the glue injection zipper head, which not only has a large workload and extremely low efficiency, but also has uneven shearing quality and is difficult to meet the mass production needs of the glue injection zipper head.

[0005] The present invention adopts the following technical solution:

[0006] An automatic cutting device for zipper head glue injection molding, comprising a bracket for placing a whole piece of glue-injected zipper head, a manipulator for clamping the whole piece of glue-injected zipper head, a power drive mechanism for pulling the manipulator to move along the center line direction of the central glue stick of the whole piece of glue-injected zipper head, and a cutting mechanism for cutting the glue-injected zipper head from the central glue stick, the power drive mechanism is clamped on the central glue stick of the whole piece of glue-injected zipper head, the power drive mechanism is connected to the manipulator, the cutting mechanism is arranged on the side of the manipulator, the manipulator clamps the glue-injected zipper heads one by one to the cutting mechanism in turn, and the glue tail end of the glue-injected zipper head is in contact with the vertical plane where the cutting line of the cutting mechanism is located.

[0007] Specifically, the manipulator includes a pair of clamping rods and a pneumatic clamping jaw driving the clamping rods to open or close, and two clamping arms of the pneumatic clamping jaw are respectively connected to a corresponding clamping rod.

[0008] Furthermore, the power drive mechanism includes a stepper screw motor, a screw and a screw slider, the stepper screw motor is connected to the screw, the screw is parallel to the center line of the center glue stick of the entire glue-injected zipper head, the screw slider is connected to the screw, and the cylinder body of the pneumatic clamp is fixed on the screw slider.

[0009] Furthermore, the cutting mechanism includes an upper cutter, a lower cutter and a driving cylinder. A lower cutter is fixed in parallel on both sides of the clamping rod, and an upper cutter is provided directly above each lower cutter. The driving cylinder is connected to the upper cutter. The driving cylinder drives the upper cutter to move downward and cooperate with the lower cutter to cut off the glue-injected zipper head from the central glue stick.

[0010] Furthermore, the driving cylinder is fixed above the upper cutter through a bracket, the free end of the driving cylinder is connected to an n-shaped connecting plate, a guide block is fixed to the upper part of the bracket, two legs of the n-shaped connecting plate pass through the guide block correspondingly, and the bottom ends thereof are respectively fixedly connected to one of the upper cutters.

[0011] Furthermore, the spacing between each upper cutter and its corresponding lower cutter is greater than the thickness of the connection between the end of the glue tail of the glue-injected zipper head and the central glue stick, but less than the thickness of the glue-injected pull tab.

[0012] Furthermore, an upper guide plate and a lower guide plate are respectively provided in front of each of the upper cutter and the lower cutter, the front end portions of the upper guide plate and the lower guide plate are inclined inward, and the rear end portions are respectively aligned and connected with the upper cutter and the lower cutter, and the distance between the rear end portions of the two upper guide plates or the lower guide plates is greater than the distance between the ends of the two glue-injected zipper head glue tails opposite to each other on both sides of the central glue stick.

[0013] Furthermore, a material discharge port is provided below the cutting mechanism, and a material blocking plate is provided at the rear side of the cutting mechanism.

[0014] From the above description of the structure of the present invention, it can be seen that compared with the prior art, the present invention has the following advantages:

[0015] 1. The automatic cutting device of the invention includes a bracket, a manipulator, a power drive mechanism and a cutting mechanism. The whole piece of glue-injected zipper head after demoulding is placed on the bracket, and then the manipulator clamps the whole piece of glue-injected zipper head and moves it along the center line direction of the central glue stick, and the connection between the glue tail end of each glue-injected zipper head and the central glue stick is transported to the cutting mechanism one by one, and finally the cutting mechanism cuts off the joint surface between the glue tail end and the connection part. Therefore, the automatic cutting device of the present invention can automatically cut the whole piece of glue-injected zipper head, and the cutting efficiency is greatly improved, which can meet the large-scale production of glue-injected zipper heads.

[0016] 2. The automatic cutting device of the invention has an upper guide piece and a lower guide piece respectively arranged in front of the upper cutter and the lower cutter, the front ends of the upper guide piece and the lower guide piece are inclined inward, and the rear ends are aligned with the upper cutter and the lower cutter respectively, and the distance between the rear ends of the two upper guide pieces or the lower guide pieces is greater than the distance between the two opposite ends of the glue tail of the glue-injected zipper head on both sides of the central glue stick. Since the distance between the upper guide pieces (lower guide pieces) at both ends increases from front to back, while the distance between the ends of the glue tail of the glue-injected zipper head on both sides of the central glue stick remains unchanged, when the glue-injected zipper head moves backward to between the upper cutter and the lower cutter, the connection between the end of the glue tail and the central glue stick is in a stretched state. Therefore, the end of the glue tail of the glue-injected zipper head will not leave burrs when cutting, thereby ensuring the cutting quality of the glue-injected zipper head. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention.

[0018] Figure 2 This is a front view of the present invention with part of the cutting mechanism omitted.

[0019] Figure 3 It is an exploded schematic diagram of the cutting mechanism of the present invention.

[0020] Figure 4 This is a top view of the end of the glue tail of the glue-injected zipper slider of the present invention entering the front end of the upper guide piece.

[0021] Figure 5 This is a top view of the glue-injected zipper slider of the present invention entering the upper cutter.

[0022] Figure 6 This is a top view of the entire glue-injected zipper head after injection molding. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] An automatic cutting device for zipper head injection molding, referring to Figure 1 and Figure 2 , comprising a frame 1 and a bracket 10, a manipulator 20, a power drive mechanism 30 and a cutting mechanism 40 arranged on the frame. A whole piece of glue-injected zipper head is placed on the bracket 10, the manipulator 20 is clamped on the central glue stick A of the whole piece of glue-injected zipper head, the power drive mechanism 30 is connected to the manipulator 20, and is used to pull the manipulator 20 to move along the center line direction of the central glue stick A of the whole piece of glue-injected zipper head, and the cutting mechanism 40 is arranged on the side of the manipulator 20, and is used to cut the glue-injected zipper head B from the central glue stick A. The manipulator 20 clamps the glue-injected zipper heads one by one to the cutting mechanism 40 in turn, and the glue tail end of the glue-injected zipper head is in contact with the vertical plane where the cutting line of the cutting mechanism 40 is located.

[0025] Reference Figure 1 and Figure 2 The manipulator 20 includes a pair of clamping rods 21 and a pneumatic clamping jaw 22 for driving the clamping rods to open or close. The two clamping arms of the pneumatic clamping jaw 22 are respectively connected to a corresponding clamping rod 21.

[0026] Reference Figure 1 and Figure 2 The power drive mechanism 30 includes a stepper screw motor 31, a screw 32 and a screw slider 33. The stepper screw motor 31 is connected to the screw 32. The screw 32 is parallel to the center line of the center glue stick of the entire glue-injected zipper head. The screw slider 33 is connected to the screw 32. The cylinder body of the pneumatic clamp 22 is fixed on the screw slider 33.

[0027] Reference Figure 1 and Figure 3 The cutting mechanism 40 includes an upper cutter 41, a lower cutter 42 and a drive cylinder 43. A lower cutter 41 is fixed in parallel on both sides of the clamp rod 21. An upper cutter 42 is arranged directly above each lower cutter 41. The drive cylinder 43 is fixed above the upper cutter 42 through a bracket 44. The free end of the drive cylinder 43 is connected to an n-shaped connecting plate 431. A guide block 441 is fixed on the upper part of the bracket 44. The two legs of the n-shaped connecting plate 431 pass through the guide block 441, and the bottom ends thereof are fixedly connected to an upper cutter 41. The drive cylinder 43 drives the upper cutter 41 to move downward to cooperate with the lower cutter 42 to cut off the glue injection zipper head from the central glue stick.

[0028] Continue to refer to Figure 1 and Figure 3 When the upper cutter 41 is in the initial state, that is, when the drive cylinder 43 is not in motion, the distance between each upper cutter 41 and its corresponding lower cutter 42 is greater than the thickness of the connection portion C between the end of the glue tail of the glue injection zipper head B and the central glue stick A, but less than the thickness of the glue injection pull tab. An upper guide piece 45 and a lower guide piece 46 are respectively provided in front of each upper cutter 41 and lower cutter 42. The bottom surface of the upper guide piece 45 is in the same horizontal plane as the bottom surface of the upper cutter 41 in the initial state, and the top surface of the lower guide piece 46 is in the same horizontal plane as the top surface of the upper cutter 41. Figure 4 and Figure 5 The gap between the upper guide piece 45 and the lower guide piece 46 forms a front guide groove, and the gap between the upper cutter 41 and the lower cutter 42 forms a rear guide groove. The front ends of the upper guide piece 45 and the lower guide piece 46 are inclined inward, and the rear ends are aligned with the upper cutter 41 and the lower cutter 42, respectively. Since the distance between the two upper guide pieces 45 (or lower guide pieces 46) increases from front to back, and the spacing a between the rear ends of the two upper guide pieces 45 or the lower guide pieces 46 is greater than the distance b between the ends of the glue tails of the two opposite glue-injected zipper heads on both sides of the central glue stick, and the distances between the ends of the glue tails of the glue-injected zipper heads on both sides of the central glue stick are the same, therefore, when the glue-injected zipper head at the front end of the upper guide piece 45 moves to the rear end of the upper guide piece 45, the connection between the ends of the glue tails of the two glue-injected zipper heads and the central glue stick is elongated and in a stretched state, and since the ends of the upper guide piece 45 and the lower guide piece 46 are aligned with the upper cutter 41 and the lower cutter 42 respectively, when the glue-injected zipper head moves forward to between the upper cutter 41 and the lower cutter 42, the connection is still in a stretched state, so that no burrs are left at the ends of the glue tails during cutting, thereby ensuring the cutting quality of the glue-injected zipper head.

[0029] Reference Figure 1 A material discharge port 51 is provided below the cutting mechanism 40 , and a material blocking plate 52 is provided at the rear side of the cutting mechanism 40 to block the cut glue injection pulling head from falling into the material discharge port 51 .

[0030] The automatic cutting device of the present invention first places the whole piece of glue-injected zipper head after demoulding on a bracket when working, and then the whole piece of glue-injected zipper head is clamped by a robot and moved along the center line direction of the central glue stick, and the connection part between the glue tail end of each glue-injected zipper head and the central glue stick is transported to the cutting mechanism one by one, and finally the cutting mechanism cuts off from the joint surface between the glue tail end and the connection part.

[0031] The automatic cutting device of the invention, although Figure 6The pull tab of the glue-injected zipper head shown in the figure is fixed relatively parallel to the top surface of the upper wing of the slider body, but its scope of application is not limited to this. It can also be applied to the cutting of glue-injected zipper heads whose pull tabs can rotate freely around the slider body, as long as the glue-injected pull tabs of the glue-injected zipper head are arranged at intervals on the side wall of the central glue stick.

[0032] The above is only a specific implementation of the present invention, but the design concept of the present invention is not limited thereto. Any non-substantial changes to the present invention using this concept shall be deemed as an infringement of the protection scope of the present invention.

Claims

1. An automatic cutting device for zipper head injection molding, characterized in that: The invention comprises a bracket for placing a whole piece of glue-injected zipper head, a manipulator for clamping the whole piece of glue-injected zipper head, a power drive mechanism for pulling the manipulator to move along the center line direction of the central glue stick of the whole piece of glue-injected zipper head, and a cutting mechanism for cutting the glue-injected zipper head from the central glue stick, the manipulator is clamped on the central glue stick of the whole piece of glue-injected zipper head, the power drive mechanism is connected to the manipulator, the cutting mechanism is arranged on the side of the manipulator, the manipulator clamps the glue-injected zipper heads one by one to the cutting mechanism in turn, and the glue tail end of the glue-injected zipper head is in contact with the vertical plane where the cutting line of the cutting mechanism is located; the manipulator comprises a pair of clamping rods and a pneumatic clamping jaw that drives the clamping rod to open or close, and the two clamping arms of the pneumatic clamping jaw are respectively connected to a clamping rod; the cutting mechanism comprises an upper cutting knife, a lower cutting knife and a driving cylinder, and two sides of the clamping rod are respectively fixed with a The lower cutters are each provided with an upper cutter directly above each lower cutter, and an upper guide sheet and a lower guide sheet are respectively provided in front of each of the upper and lower cutters, the front ends of the upper and lower guide sheets are inclined inwardly, and the rear ends are respectively aligned and connected with the upper and lower cutters, and the distance between the rear ends of the two upper guide sheets or the lower guide sheets is greater than the distance between the ends of the glue tails of the two opposite glue-injected zipper heads on both sides of the central glue stick; the driving cylinder is connected to the upper cutter, and the driving cylinder drives the upper cutter to move downward and cooperate with the lower cutter to cut off the glue-injected zipper head from the central glue stick; the driving cylinder is fixed above the upper cutter by a bracket, and the free end of the driving cylinder is connected to an n-shaped connecting plate, and a guide block is fixed on the upper part of the bracket, and the two legs of the n-shaped connecting plate pass through the guide block correspondingly, and the bottom ends thereof are respectively fixedly connected to one of the upper cutters.

2. The automatic cutting device for zipper head injection molding according to claim 1, characterized in that: The power drive mechanism includes a stepping screw motor, a screw and a screw slider, the stepping screw motor is connected to the screw, the screw is parallel to the center line of the central glue stick of the entire glue-injected zipper head, the screw slider is connected to the screw, and the cylinder body of the pneumatic clamp is fixed on the screw slider.

3. The automatic cutting device for zipper head injection molding according to claim 1, characterized in that: The spacing between each upper cutting knife and its corresponding lower cutting knife is greater than the thickness of the connecting portion between the end of the glue tail of the glue-injected zipper head and the central glue stick, but less than the thickness of the glue-injected pull tab.

4. The automatic cutting device for zipper head injection molding according to claim 1, characterized in that: A material discharge port is provided below the cutting mechanism, and a material blocking plate is also provided at the rear side of the cutting mechanism.

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