Process device for sewing zipper by utilizing bartacking machine

Abstract

The utility model discloses a process device for sewing a zipper by using a bar tacking machine, and relates to the technical field of zipper processes. The first presser foot support is vertically arranged on one side of the first presser foot; the second presser foot and the first presser foot are distributed in parallel; the second presser foot bracket is vertically arranged on one side of the second presser foot; threading grooves used for a machine needle to penetrate through are formed in the tops of the front ends of the first presser foot and the second presser foot in a matched mode, protruding parts used for pressing cloth are arranged at the bottoms of the front ends of the first presser foot and the second presser foot, adjusting pieces are arranged at the rear ends of the first presser foot and the second presser foot, and the protruding parts are driven to press downwards by rotating the adjusting pieces. According to the device, the structure of the presser foot is improved, so that the phenomenon of thread breakage caused by hot machine needles can be effectively reduced, and the phenomenon of needle breakage is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of zipper technology, and more particularly to a process device for sewing zippers using a bartacking machine. Background Art

[0002] In the existing technology, the zipper structure is composed of zipper teeth, fabric and a layer of leather. The zipper teeth are higher than the fabric and leather, and the zipper teeth are staggered to form a zipper head. When the ordinary presser foot presses down, it will first press the zipper head, causing the surrounding fabric to be pressed and hollowed out. Because the zipper head itself is formed by the staggered zipper teeth, the ordinary presser foot staggers the zipper head more tightly when pressing it. When the needle descends to the same plane as the zipper head, the impact force is very large, because the zipper head becomes more compact under the action of the ordinary presser foot, so the needle needs a lot of impact force to penetrate it while descending.

[0003] The structure of the needle is that the cone angle from the needle tip to 2mm is relatively large, and the cone angle from 2mm to 22mm is relatively small. Due to the structure of the needle, when the needle pierces the zipper head, as the needle goes deeper, the needle becomes thicker and thicker, and will exert an outward force on all sides. The ordinary presser foot will exert an inward force on the inside when pressing the zipper head, causing the needle to be compact with the zipper teeth, and then the following disadvantages will occur: 1. Because the needle and the zipper teeth are compact, the rapid up and down movement of the needle will generate huge friction, which will cause the temperature of the needle to accumulate and rise. When the temperature of the needle rises to a certain level, the high temperature generated will burn the thread and cause the thread to break; 2. When the ordinary presser foot is pressed down, the zipper teeth are compact, and the needle has a large impact force when it goes down, causing the zipper head to be damaged and forming a knife-like cutting edge; 3. The zipper head is higher than the fabric, so the presser foot drags the zipper head while moving, instead of the fabric moving, causing the presser foot to be easily dislocated while moving, and then the needle is easily broken.

[0004] In summary, how to improve the presser foot to reduce the wire breakage failure rate is an urgent problem to be solved by those skilled in the art. Utility Model Content

[0005] In view of this, the purpose of the present invention is to provide a process device for sewing zippers using a bar tacking machine, which can effectively reduce the phenomenon of thread breakage caused by the heating of the machine needle and effectively reduce the phenomenon of needle breakage by improving the structure of the presser foot.

[0006] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0007] A process device for sewing a zipper using a bartacking machine, comprising:

[0008] First presser foot;

[0009] a first presser foot bracket, which is vertically arranged on one side of the first presser foot;

[0010] a second presser foot, which is arranged in parallel with the first presser foot;

[0011] a second presser foot bracket, which is vertically arranged on one side of the second presser foot;

[0012] The front end tops of the first presser foot and the second presser foot are cooperated with a threading groove for passing the needle, the front end bottoms of the first presser foot and the second presser foot are both provided with a raised portion for pressing the cloth, and the rear ends of the first presser foot and the second presser foot are both provided with an adjusting piece to drive the raised portion to be pressed down by rotating the adjusting piece.

[0013] In one embodiment, the first presser foot bracket and the first presser foot are detachably connected, and the second presser foot bracket and the second presser foot are detachably connected.

[0014] In one embodiment, the first presser foot bracket is a first L-shaped structure, and the horizontal part of the first L-shaped structure is arranged above the first presser foot through a fastener; the second presser foot bracket is a second L-shaped structure, and the horizontal part of the second L-shaped structure is arranged above the second presser foot through a fastener.

[0015] In one embodiment, the fastener comprises a cylindrical head screw, and a spring washer is sandwiched between the cylindrical head screw and the horizontal portion.

[0016] In one embodiment, the vertical portions of the first L-shaped structure and the second L-shaped structure are both provided with mounting holes.

[0017] In one embodiment, the horizontal portion is an equilateral triangle block, the two fasteners and the adjusting member are respectively located at three vertices of the equilateral triangle block, and the two fasteners are symmetrically distributed with the adjusting member as the center.

[0018] In one embodiment, the adjustment member comprises a fastening screw.

[0019] In one embodiment, the bottom of the raised portion is provided with a serrated structure.

[0020] When using the zipper sewing device provided by the utility model using a bar tacking machine, the first presser foot bracket and the second presser foot bracket can be connected to other devices for lifting and lowering, thereby driving the first and second presser feet to move synchronously. When the first and second presser feet are lowered, if the raised portions at the bottom of the first and second presser feet are not flush with the needle plate, the first and second presser feet can be lowered by rotating the adjusting member. The connection between the first presser foot and the first presser foot bracket forms a support point, and the connection between the second presser foot and the second presser foot bracket forms a support point. At this time, the adjusting member is screwed in to a depth of n, and the angle of inclination a at which the front ends of the presser feet (including the first and second presser feet) are pressed down as the adjusting member is screwed in changes with the screwing depth n. That is, the front ends of the presser feet are pressed down as the adjusting member is screwed in, until the raised portions press the fabric flush with the fabric.

[0021] When the first presser foot and the second presser foot are pressed down, the middle height of the presser foot is higher than the height of the zipper head. When the raised portion of the presser foot contacts the fabric, the raised portion presses the fabric to prevent the fabric from not being pressed tightly during sewing. When the fabric is pressed tightly, the middle of the presser foot does not press the zipper head, and there is a gap between the two. This arrangement has the following three advantages: 1. When the needle passes through the threading slot and descends, a greater impact force is generated at the moment the needle contacts the zipper head. At this time, in the absence of external force, the zipper head will move away as the needle head penetrates, avoiding damage to the zipper head and forming a blade; 2. During the descent of the needle, an outward force will be applied to the zipper head. At this time, the zipper head is not crushed, so when it is subjected to the outward force, the zipper teeth of the zipper head will expand slightly outward, thereby reducing the friction coefficient and reducing the phenomenon of thread breakage due to the heating of the needle; 3. Because the middle height of the presser foot is higher than the height of the zipper head, the presser foot drags the fabric to move, which can avoid dislocation and prevent needle breakage.

[0022] In summary, the process device for sewing zippers using a bar tacking machine provided by the present invention can effectively reduce the phenomenon of thread breakage caused by the heating of the machine needle and effectively reduce the phenomenon of needle breakage by improving the structure of the presser foot. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0024] Figure 1 This is a schematic structural diagram of a process device for sewing a zipper using a bartacking machine provided by the present invention;

[0025] Figure 2 This is a schematic diagram showing the change in angle of the front end of the presser foot as the adjusting piece is screwed in.

[0026] Figure 3 It is a structural schematic diagram of the raised portion of the presser foot.

[0027] Reference numerals:

[0028] 1-first presser foot; 2-second presser foot bracket; 3-first presser foot bracket; 4-spring washer; 5-cylinder head screw; 6-adjusting piece; 7-second presser foot; 8-protrusion. DETAILED DESCRIPTION

[0029] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0030] The core of the utility model is to provide a process device for sewing zippers using a bar tacking machine. By improving the structure of the presser foot, the device can effectively reduce the phenomenon of thread breakage caused by the heating of the machine needle and effectively reduce the phenomenon of needle breakage.

[0031] Please refer to Figures 1 to 3 , Figure 1 This is a schematic structural diagram of a process device for sewing a zipper using a bartacking machine provided by the present invention; Figure 2 This is a schematic diagram showing the change in angle of the front end of the presser foot as the adjusting piece is screwed in. Figure 3 It is a structural schematic diagram of the raised portion of the presser foot.

[0032] This specific embodiment provides a process device for sewing a zipper using a bartacking machine, comprising:

[0033] First presser foot 1;

[0034] A first presser foot bracket 3 is vertically arranged on one side of the first presser foot 1;

[0035] A second presser foot 7, which is arranged in parallel with the first presser foot 1;

[0036] A second presser foot bracket 2 is vertically arranged on one side of the second presser foot 7;

[0037] The front end tops of the first presser foot 1 and the second presser foot 7 are equipped with threading grooves for passing the needles, the front end bottoms of the first presser foot 1 and the second presser foot 7 are equipped with raised portions 8 for pressing the fabric, and the rear ends of the first presser foot 1 and the second presser foot 7 are equipped with adjusting parts 6 to drive the raised portions 8 to be pressed down by rotating the adjusting parts 6.

[0038] During actual use, the shape, structure, size, material, etc. of the first presser foot 1, the first presser foot bracket 3, the second presser foot 7, the second presser foot bracket 2, the protrusion 8 and the adjusting member 6 can be determined according to actual conditions and actual needs.

[0039] When using the zipper sewing device provided by the present invention using a bar tacking machine, the first presser foot bracket 3 and the second presser foot bracket 2 can be connected to other devices for lifting and lowering, thereby driving the first presser foot 1 and the second presser foot 7 to move synchronously up and down. When the first presser foot 1 and the second presser foot 7 are pressed downward, and the raised portion 8 at the bottom of the first presser foot 1 and the second presser foot 7 is not flush with the needle plate, the first presser foot 1 and the second presser foot 7 can be pressed downward by rotating the adjusting member 6. The connection between the first presser foot 1 and the first presser foot bracket 3 forms a support point, and the connection between the second presser foot 7 and the second presser foot bracket 2 forms a support point. At this time, the screwing depth of the adjusting member 6 is n, and the angle of inclination of the front ends of the presser feet (including the first presser foot 1 and the second presser foot 7) as the adjusting member 6 is screwed in is a value n. The angle of inclination a changes with the screwing depth n. That is, the front ends of the presser feet are pressed downward as the adjusting member 6 is screwed in, until the raised portion 8 presses the fabric flush with the fabric.

[0040] When the first presser foot 1 and the second presser foot 7 are pressed down, the middle height of the presser foot is higher than the height of the zipper head. When the raised portion 8 of the presser foot contacts the fabric, the raised portion 8 presses the fabric to prevent the fabric from not being pressed tightly during sewing. When the fabric is pressed tightly, the middle of the presser foot does not press the zipper head, and there is a gap between the two. This arrangement has the following three advantages: 1. When the needle passes through the threading slot and descends, a greater impact force is generated at the moment the needle contacts the zipper head. At this time, in the absence of external force, the zipper head will move away as the needle head penetrates, avoiding damage to the zipper head and forming a blade; 2. During the descent of the needle, an outward force will be applied to the zipper head. At this time, the zipper head is not crushed, so when it is subjected to the outward force, the zipper teeth of the zipper head will expand slightly outward, thereby reducing the friction coefficient and reducing the phenomenon of thread breakage due to the heating of the needle; 3. Because the middle height of the presser foot is higher than the height of the zipper head, the presser foot drags the fabric to move, which can avoid dislocation and prevent needle breakage.

[0041] In summary, the process device for sewing zippers using a bar tacking machine provided by the present invention can effectively reduce the phenomenon of thread breakage caused by the heating of the machine needle and effectively reduce the phenomenon of needle breakage by improving the structure of the presser foot.

[0042] In one embodiment, the first presser foot bracket 3 and the first presser foot 1 are detachably connected, and the second presser foot bracket 2 and the second presser foot 7 are detachably connected, so as to facilitate the installation and disassembly of the first presser foot bracket 3 and the first presser foot 1, and the second presser foot bracket 2 and the second presser foot 7.

[0043] In one embodiment, the first presser foot bracket 3 is a first L-shaped structure, the horizontal portion of which is fastened to the first presser foot 1; the second presser foot bracket 2 is a second L-shaped structure, the horizontal portion of which is fastened to the second presser foot 7. Therefore, the vertical portions of the first and second L-shaped structures can be connected to other components to drive the first and second presser feet 1, 7 to move synchronously.

[0044] In one embodiment, the fastener includes a cylindrical head screw 5, with a spring washer 4 sandwiched between the cylindrical head screw 5 and the horizontal portion. Specifically, a fixing hole can be provided in alignment through the horizontal portion of the first presser foot bracket 3 and the first presser foot 1, the bottom of the cylindrical head screw 5 is provided with a spring washer 4 and inserted into the fixing hole, and the cylindrical head screw 5 is tightened with a nut to lock the first presser foot bracket 3 and the first presser foot 1 together. Alternatively, a fixing hole can be provided in alignment through the horizontal portion of the second presser foot bracket 2 and the second presser foot 7, the bottom of the cylindrical head screw 5 is provided with a spring washer 4 and inserted into the fixing hole, and the cylindrical head screw 5 is tightened with a nut to lock the second presser foot bracket 2 and the second presser foot 7 together.

[0045] In one embodiment, the vertical parts of the first L-shaped structure and the second L-shaped structure are both provided with mounting holes, so that the vertical parts and other devices can be fixedly connected through fixing parts and mounting holes, thereby facilitating other components to drive the first L-shaped structure and the second L-shaped structure to move synchronously.

[0046] In one embodiment, the horizontal portion is an equilateral triangle, with the two fasteners and the adjustment member 6 located at the three vertices of the equilateral triangle, and the two fasteners are symmetrically distributed around the adjustment member 6. The equilateral triangle herein does not refer to a standard equilateral triangle structure; the three vertex angles of the equilateral triangle can be smoothly rounded. Furthermore, positioning the adjustment member 6 on the central axis of the two fasteners helps ensure a relatively smooth downward tilting of the front end of the presser foot as the adjustment member 6 is screwed into the presser foot to a certain depth.

[0047] In one embodiment, the adjusting member 6 includes a fastening screw. Therefore, the operator can tighten the fastening screw so that the fastening screw is screwed into the presser foot to a depth n. At this time, the front end of the presser foot is pressed down and tilted as the fastening screw is screwed in. The inclination angle a of the front end of the presser foot will change with the change of the screwing depth n until the presser foot and the fabric are in flush contact.

[0048] In one embodiment, the bottom of the raised portion 8 is provided with a serrated structure to increase the friction between the serrated structure and the fabric, thereby helping the raised portion 8 to better press the fabric. The bottom of the middle area of ​​the presser foot is higher than the raised portion 8 at the front end of the presser foot, and the zipper slider can be inserted into the bottom of the middle area of ​​the presser foot.

[0049] It should be noted that the first presser foot 1 and the second presser foot 7, the first presser foot bracket 3 and the second presser foot bracket 2 mentioned in the present invention, where the first and the second are only used to distinguish the different positions, have no order of precedence.

[0050] In addition, it should be noted that the orientations or positional relationships indicated by "horizontal" and "vertical" in the present invention are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the purpose of simplifying the description and facilitating understanding, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0051] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other. Any combination of all the embodiments provided by this utility model is within the scope of protection of this utility model and will not be described in detail here.

[0052] The above describes in detail the process apparatus for sewing zippers using a bartacking machine provided by the present invention. This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above examples is intended only to facilitate understanding of the method and core concept of the present invention. It should be noted that those skilled in the art may make various improvements and modifications to the present invention without departing from the principles of the present invention, and such improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A process device for sewing zippers using a bar tacking machine, characterized in that: include: First presser foot (1); A first presser foot bracket (3) vertically arranged on one side of the first presser foot (1); a second presser foot (7), which is arranged in parallel with the first presser foot (1); A second presser foot bracket (2) vertically arranged on one side of the second presser foot (7); The front ends of the first presser foot (1) and the second presser foot (7) are cooperatively provided with a threading groove for passing a needle, the front ends of the first presser foot (1) and the second presser foot (7) are both provided with a raised portion (8) for pressing the cloth, and the rear ends of the first presser foot (1) and the second presser foot (7) are both provided with an adjusting member (6) so as to drive the raised portion (8) to be pressed downward by rotating the adjusting member (6).

2. The process device for sewing zippers using a bar tacking machine according to claim 1, characterized in that: The first presser foot bracket (3) and the first presser foot (1) are detachably connected, and the second presser foot bracket (2) and the second presser foot (7) are detachably connected.

3. The process device for sewing zippers using a bar tacking machine according to claim 2, characterized in that: The first presser foot bracket (3) is a first L-shaped structure, and the horizontal portion of the first L-shaped structure is arranged above the first presser foot (1) through a fastener; the second presser foot bracket (2) is a second L-shaped structure, and the horizontal portion of the second L-shaped structure is arranged above the second presser foot (7) through a fastener.

4. The process device for sewing zippers using a bar tacking machine according to claim 3, characterized in that: The fastener comprises a cylindrical head screw (5), and a spring washer (4) is sandwiched between the cylindrical head screw (5) and the horizontal portion.

5. The process device for sewing zippers using a bar tacking machine according to claim 3, characterized in that: The vertical portions of the first L-shaped structure and the second L-shaped structure are both provided with mounting holes.

6. The process device for sewing zippers using a bar tacking machine according to claim 3, characterized in that: The horizontal portion is an equilateral triangle block, the two fasteners and the adjusting member (6) are respectively located at three vertices of the equilateral triangle block, and the two fasteners are symmetrically distributed with the adjusting member (6) as the center.

7. The process device for sewing a zipper using a bar tacking machine according to any one of claims 1 to 6, characterized in that: The adjusting member (6) comprises a fastening screw.

8. The process device for sewing a zipper using a bar tacking machine according to any one of claims 1 to 6, characterized in that: The bottom of the raised portion (8) is provided with a sawtooth structure.

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