Sewing equipment suitable for non-continuous sewing

Abstract

The utility model relates to the technical field of zipper manufacturing, in particular to sewing equipment suitable for non-continuous sewing, which comprises a sewing mechanism and a towing mechanism, the sewing mechanism comprises a bearing table, a sewing needle assembly is arranged above the bearing table, and the sewing needle assembly comprises a needle seat and two groups of longitudinally arranged needle bodies; a thread hooking assembly is arranged below the bearing table and comprises two thread hooking bodies corresponding to the two sets of needle bodies respectively and a thread hooking driving piece, the thread hooking driving piece comprises a thread hooking base, a connecting rod and two rotating rods, the two rotating rods are rotatably installed on the thread hooking base, the two thread hooking bodies are fixed to the two rotating rods, the connecting rod is hinged to the two thread hooking bodies, and the thread hooking driving piece is connected with the connecting rod. The two thread hooking bodies synchronously swing in a reciprocating manner; the needle body and the thread hooking body are matched to fix the passing sewn materials in a sewing manner; when the sewing machine works, to-be-sewn materials synchronously and continuously pass through the sewing mechanism under the action of the towing mechanism, the sewing mechanism sews and fixes the passing sewn materials and stops for a preset time length after sewing for a preset length, then sewing for the preset length is started, and the steps are repeated in sequence.

Description

Technical Field

[0001] The utility model relates to the technical field of zipper manufacturing, and particularly relates to a sewing device applicable to discontinuous stitches.

[0002] Priority Statement

[0003] This application claims the priority of a Chinese patent application with an application date of May 15, 2024, an application number of 2024210591064, and a title of "Chain tape with discontinuous stitches and a stitching device for manufacturing the same", the entire content of which is incorporated herein by reference. Background Art

[0004] In the upstream and downstream industrial ecosystems of zippers, zipper manufacturers produce chain tapes dozens of meters or more than a hundred meters long and supply them to downstream application manufacturers, such as luggage factories and garment factories. Taking a luggage factory as an example, the manufacturer cuts a chain tape segment of a corresponding length according to the circumferential side length of the zipper required for the luggage, and sews the two cloth tapes of the chain tape segment without teeth on both sides of the luggage.

[0005] For aesthetic considerations, before the chain tape segment is fixed to the luggage, other structures (such as extension cloth tapes) at the ends of the chain tape segment need to be removed, leaving a section of pure fabric to seal the edge of the installed zipper end.

[0006] When producing chain tapes, existing sewing machines can only work continuously, that is, one or more than two stitches are continuously sewn along the length direction of the entire chain tape. Luggage manufacturers need to remove the extension cloth tapes at both ends of the cut chain tape segments. The prior art is to manually cut the stitches outside the corresponding extension cloth tapes and then cut the corresponding extension cloth tapes, which is time-consuming and laborious, extremely inconvenient to operate, and reduces the production efficiency of application manufacturers. Summary of the Invention

[0007] In view of all or part of the above technical problems existing in the prior art, the utility model provides a sewing device applicable to discontinuous stitches.

[0008] To achieve the above object, the utility model provides the following technical solutions:

[0009] Provide a sewing device applicable to discontinuous stitches, including a stitching mechanism and a tape towing mechanism. The stitching mechanism includes a supporting table, and the tape towing mechanism is used to continuously drag the material to be sewn through the supporting table;

[0010] A sewing needle assembly is arranged above the supporting platform, which includes a needle seat, two groups of needle bodies arranged vertically, and a sewing power part for driving the needle seat to move up and down. The two groups of needle bodies are fixed to the needle seat and aligned side by side in transverse direction so as to correspond to two parallel sewing tracks downward; a thread hook assembly is arranged below the supporting platform, which includes two thread hooking bodies corresponding to the two groups of needle bodies respectively and a thread hooking driving part for driving the thread hooking bodies to swing back and forth, the thread hooking driving part includes a thread hooking seat, a connecting rod and two rotating rods, the two rotating rods are arranged side by side and rotatably installed on the thread hooking seat, the two thread hooking bodies are fixed to the two rotating rods, and the connecting rod is hinged to the two thread hooking bodies so that the two thread hooking bodies can swing back and forth synchronously; the two groups of needle bodies and the two thread hooking bodies cooperate one by one to sew and fix the sewn materials passing through each other;

[0011] It also includes an electric control module electrically connected to the sewing power member and the thread hooking drive member to control the cyclic switching between the sewing state and the rest state. In the sewing state, the sewn materials flowing through are sewn and fixed to each other, and in the rest state, the sewing is stopped and the sewn materials flowing through are separated from each other without sewing.

[0012] As a further optional solution, the line hooking drive also includes a power shaft rotatably mounted on the line hooking seat, and a transmission pair is provided between the power shaft and the two rotating rods so that the power shaft can simultaneously drive the two rotating rods to rotate clockwise and counterclockwise within a preset angle range.

[0013] As a further optional solution, the transmission pair includes a gear set fixed to the rotating rod and the end of the power shaft and meshing with each other for transmission.

[0014] As a further optional solution, the gear sets of the power shaft and the rotating rod are both located on the same side of the wire hooking seat, and the wire hooking seat is provided with a protective cover covering the gear set.

[0015] As a further optional scheme, a needle guard mechanism is also included, which includes a needle guard block and a needle guard drive. In a rest state, the needle guard drive drives the needle guard block to resist the sides of the two groups of needles of the suture mechanism, and the resisting direction is opposite to the dragging direction.

[0016] As a further optional solution, the towing mechanism includes a first towing module and a second towing module, both of which can drag the seamed material to move, and the first towing module and the second towing module are both electrically connected to the electronic control module to control the start and stop of the first towing module and the second towing module.

[0017] As a further optional solution, a first dragging module is used to drag the material to be sewn in the sewing state, and a second dragging module is used to drag the material to be sewn in the rest state, and the dragging speed of the second dragging module is lower than the dragging speed of the first dragging module.

[0018] As a further alternative, the first towing module and the second towing module respectively include an upper roller, a lower roller and a towing driving member. The upper roller and the lower roller are arranged side by side vertically, and there is a gap between them for the material to be sewn to pass through. The towing driving member is electrically connected to the electronic control module and is used to drive the upper roller and / or the lower roller to rotate so that the upper roller and the lower roller jointly clamp the material to be sewn and move; the gap between the upper roller and the lower roller is adjustable.

[0019] As a further alternative, the upper roller is elastically and floatingly arranged longitudinally to elastically press against the top surface of the material to be sewn; the upper roller and / or the lower roller are provided with relief grooves in the circumferential direction.

[0020] Advantages of the utility model:

[0021] A sewing device suitable for non - continuous sewing threads according to the utility model, when working, the materials to be sewn (more than two materials) continuously pass through the sewing thread mechanism synchronously under the action of the towing mechanism. The sewing thread mechanism stitches and fixes the passing materials to be sewn, and stops for a preset time after sewing a preset length, and then starts to sew a preset length again, and so on in a cycle. The sewn materials produced in this way have the sewing threads arranged in a segmented manner along the length direction, and are separated non - sewn between different materials to be sewn. When supplying to the application manufacturer, the application manufacturer only needs to cut at the non - sewn position and cut off the structure at the end that is not stitched and fixed, saving the process of removing the sewing threads, saving time and effort and improving work efficiency. Description of the drawings

[0022] Figure 1 It is a schematic structural diagram of a sewing device suitable for non - continuous sewing threads in an embodiment.

[0023] Figure 2 It is a schematic structural diagram of another perspective of a sewing device suitable for non - continuous sewing threads in an embodiment.

[0024] Figure 3 It is a schematic structural diagram of the second towing module in an embodiment.

[0025] Figure 4 It is a schematic structural diagram of the thread - hooking component in an embodiment.

[0026] Figure 5 It is an exploded view of the thread - hooking component in an embodiment.

[0027] Reference numerals:

[0028] Sewing thread mechanism 1, supporting table 11, sewing needle assembly 12, needle base 121, needle body 122, thread - hooking component 13, thread - hooking body 131, thread - hooking seat 132, connecting rod 133, rotating rod 134, power shaft 135, gear set 136, protective cover 137;

[0029] Towing mechanism 2, first towing module 21, second towing module 22, upper roller 23, lower roller 24, relief groove 241, towing drive 25, support base 26, floating seat 27, transition seat 28, spring 29, lifting mechanism 210;

[0030] Electric control module 3;

[0031] Needle protection mechanism 4, needle protection block 41, needle protection drive 42. Specific implementation mode

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0033] A sewing device applicable to non - continuous sewing threads in this embodiment, as Figures 1 to 5 shown, includes a sewing thread mechanism 1 and a towing mechanism 2. The sewing thread mechanism 1 includes a supporting table 11, and the towing mechanism 2 is used to continuously drag the material to be sewn through the supporting table 11.

[0034] A sewing needle assembly 12 is provided above the support platform 11, which includes a needle seat 121, two groups of needle bodies 122 placed vertically, and a sewing power member (located inside and not shown) for driving the needle seat 121 to move up and down. The two groups of needle bodies 122 are fixed to the needle seat 121 and aligned horizontally side by side to correspond to the stitching tracks on both sides of the material to be sewn. A thread hook assembly 13 is provided below the support platform 11, which includes two thread hooking bodies 131 corresponding to the two groups of needle bodies 122 and a thread hooking driving member for driving the thread hooking bodies 131 to move; when working, the two groups of needle bodies 122 pass through the needle holes of the support platform 11 and cooperate with the two thread hooking bodies 131 one by one to sew and fix the sewing materials passing through. The stitching of the needle body 122 and the thread hooking body 131 is a prior art. The line hooking driving member includes a line hooking seat 132, a connecting rod 133 and two rotating rods 134. The two rotating rods 134 are arranged in parallel and rotatably mounted on the line hooking seat 132 via bearings. The two line hooking bodies 131 are fixed in parallel to the two rotating rods 134. The two ends of the connecting rod 133 are respectively hinged to the two line hooking bodies 131 so that the two line hooking bodies 131 can swing back and forth synchronously. The line hooking driving member also includes a power shaft 135 rotatably mounted on the line hooking seat 132. A transmission pair is provided between the power shaft 135 and the two rotating rods 134. The transmission pair includes a gear set 136 fixed to the ends of the rotating rods 134 and the power shaft 135 and meshing with each other. The power shaft 136 is connected to the motor on the periphery to drive the power shaft 136 to rotate back and forth clockwise and counterclockwise at a preset rotation angle, so as to simultaneously drive the two rotating rods 134 to rotate back and forth clockwise and counterclockwise (swing) within a preset angle range. The power shaft 135 and the gear set 136 of the rotating rod 134 are both located on the same side of the thread hooking seat 132 , and the thread hooking seat 132 is provided with a protective cover 137 covering the gear set 136 .

[0035] The sewing equipment also includes an electric control module 3 electrically connected to the sewing power component and the thread hooking drive component to control the cyclic switching between the sewing state and the rest state. In the sewing state, the segments of the sewn material flowing through the supporting platform 11 are sewn and fixed to each other, and in the rest state, the sewing is stopped and the segments of the sewn material flowing through the supporting platform 11 are separated from each other without sewing.

[0036] In this embodiment, in the rest state, although the needle body 122 stops sewing, the sewn material still pulls the wire to continue moving forward. In order to avoid bending and breaking the needle body 122, the device also includes a needle protection mechanism 4, which includes a needle protection block 41 and a needle protection drive 42. The needle protection drive 42 is electrically connected to the electronic control module 3. In the rest state, the needle protection drive 42 drives the needle protection block 41 to resist the sides of the two groups of needle bodies 122, and the resisting direction is opposite to the towing direction, so as to prevent the needle body 122 from being bent, deformed or even broken. The needle protection drive 42 can drive the needle protection block 41 to move horizontally, so that the needle protection block 41 is away from the needle body 122 or close to resist the sides of the two groups of needle bodies 122. Of course, in practice, two groups of needle protection mechanisms 4 can be set to protect the two groups of needle bodies 122 separately.

[0037] In this embodiment, the towing mechanism 2 includes a first towing module 21 and a second towing module 22 both capable of towing the material to be sewn to move. The first towing module 21 and the second towing module 22 are both electrically connected to the electric control module 3 to select the first towing module 21 and / or the second towing module 22 to tow. Specifically, the first towing module 21 is used to tow in the sewing thread state, and the second towing module 22 is used to tow in the rest state. The towing speed of the second towing module 22 is less than that of the first towing module 21 to avoid bending the needle body 122 or breaking the wire.

[0038] Specifically, the first towing module 21 and the second towing module 22 respectively include an upper roller 23, a lower roller 24 and a towing driving member 25. The upper roller 23 and the lower roller 24 are arranged side by side up and down, and there is a gap therebetween for the base fabric belt and the expanded fabric belt to pass through. The towing driving member 25 is electrically connected to the electric control module 3 to drive the lower roller 24 to rotate so that the upper roller 23 and the lower roller 24 jointly clamp the material to be sewn to move; the height of the upper roller 23 is adjustable to realize the adjustability of the gap between the upper roller 23 and the lower roller 24 to move away from each other to release the towing of the material to be sewn.

[0039] Specifically, the upper roller 23 is longitudinally elastically floatingly arranged to elastically press on the top surface of the material to be sewn; the lower roller 24 is provided with a relief groove 241 around the circumference for the chain teeth of the material to be sewn to be embedded and pass through, playing a role of guiding and relieving. The number of the relief grooves 241 is two for two chain teeth to be embedded side by side. Specifically, the second towing module further includes a support seat 26, a floating seat 27, a transition seat 28, a spring 29 and a lifting mechanism 210. The floating seat 27 is slidably mounted on the support seat 26 longitudinally, the lower roller 24 is rotatably mounted on the floating seat 27, the transition seat 28 is longitudinally movably mounted on the floating seat 27, both ends of the spring 29 respectively abut against the floating seat 27 and the transition seat 28, and the lifting mechanism 210 can drive the floating seat 27 to move downward to press the spring 29 to drive the floating seat 27 to move downward, and then drive the lower roller 24 to cooperate with the upper roller 23. The lifting mechanism 210 drives the floating seat 27 to move upward, and can drive the transition seat 28, the floating seat 27 and the lower roller 24 to move upward.

[0040] In this embodiment, the control of the sewing thread mechanism 1, the towing mechanism 2, the needle protection driving member 42 and the towing driving member 25 by the electric control module 3 is that software engineers program the electric control module 3 to realize the start-stop, speed, direction and other controls of each mechanism by constructing computer function modules.

[0041] The needle protection driving member 42 and the lifting mechanism 210 are linear drives, and can adopt the existing technologies such as cylinders, linear motors, screw-nut transmission pairs, etc., which will not be elaborated here.

[0042] The material to be sewn can be an expanded cloth tape. A fixing expanded cloth tape is sewn between two base cloth tapes. Specifically, reference can be made to a zipper cloth tape supporting a hidden connection area disclosed in Chinese Patent Document with Publication No. CN220824035U, or a double-row telescopic perimeter zipper that can be quickly sewn and used disclosed in Chinese Patent Document with Publication No. CN215014105U. During operation, the two flattened base cloth tapes and the expanded cloth tape continuously pass through the supporting table 11 synchronously. Specifically, the two base cloth tapes are arranged horizontally and separated, and the expanded cloth tape is flattened and partially laminated on the top surface / bottom surface of the two base cloth tapes, so that the two side edges of the expanded cloth tape are located in the middle of the two base cloth tapes. The material to be sewn can also be a cloth tape and teeth. Two parallel teeth are sewn on the cloth tape at the same time.

[0043] In the description of the present invention, it is obvious that the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. Usually, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0044] Therefore, the above detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the present invention to be protected, but only represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present invention.

[0045] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "middle", "upper", "lower", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the invention product is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation to the present invention. In addition, the terms "first", "second", etc. are only used for distinguishing descriptions, and cannot be understood as indicating or implying relative importance.

[0046] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "set", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

Claims

1. A sewing device suitable for non-continuous stitching, characterized by: The invention comprises a sewing mechanism (1) and a dragging mechanism (2), wherein the sewing mechanism (1) comprises a supporting platform (11), and the dragging mechanism (2) is used for dragging the sewn material to continuously flow through the supporting platform (11); A sewing needle assembly (12) is provided above the support platform (11), comprising a needle seat (121), two groups of needle bodies (122) arranged vertically, and a sewing power member for driving the needle seat (121) to move up and down, wherein the two groups of needle bodies (122) are fixed to the needle seat (121) and are aligned side by side in the transverse direction so as to correspond to two parallel sewing thread tracks facing downward; a thread hook assembly (13) is provided below the support platform (11), comprising two thread hooking bodies (131) corresponding to the two groups of needle bodies (122) respectively and a sewing power member for driving the thread hooking bodies (131) to swing back and forth The thread hooking driving member comprises a thread hooking seat (132), a connecting rod (133) and two rotating rods (134), the two rotating rods (134) are arranged in parallel and rotatably mounted on the thread hooking seat (132), two thread hooking bodies (131) are fixed to the two rotating rods (134), the connecting rod (133) is hinged to the two thread hooking bodies (131), so that the two thread hooking bodies (131) can swing back and forth synchronously; the two sets of needle bodies (122) and the two thread hooking bodies (131) are matched one by one to mutually sew and fix the sewing materials passing through; It also includes an electric control module (3) electrically connected to the sewing power member and the thread hooking drive member to control the cyclic switching between a sewing state and a rest state. In the sewing state, the sewn materials flowing through are sewn together and fixed, and in the rest state, the sewing is stopped and the sewn materials flowing through are separated from each other without sewing.

2. The sewing equipment suitable for non-continuous stitching according to claim 1 is characterized in that: The thread hooking driving member also includes a power shaft (135) rotatably mounted on the thread hooking seat (132), and a transmission pair is provided between the power shaft (135) and the two rotating rods (134), so that the power shaft (135) simultaneously drives the two rotating rods (134) to rotate clockwise and counterclockwise within a preset angle range.

3. The sewing equipment suitable for non-continuous stitching according to claim 2 is characterized in that: The transmission pair comprises a gear set (136) fixed to the end of the rotating rod (134) and the power shaft (135) and meshing with each other for transmission.

4. The sewing equipment suitable for non-continuous stitching according to claim 3 is characterized in that: The power shaft (135) and the gear set (136) of the rotating rod (134) are both located on the same side of the thread hooking seat (132), and the thread hooking seat (132) is provided with a protective cover (137) covering the gear set (136).

5. The sewing equipment suitable for non-continuous stitching according to claim 1 is characterized in that: It also includes a needle protection mechanism (4), which includes a needle protection block (41) and a needle protection drive member (42). In a rest state, the needle protection drive member (42) drives the needle protection block (41) to resist the side parts of the two groups of needle bodies (122) of the suture mechanism (1), and the resisting direction is opposite to the dragging direction.

6. The sewing equipment suitable for non-continuous stitching according to claim 1 is characterized in that: The dragging mechanism (2) comprises a first dragging module (21) and a second dragging module (22) both of which can drag the sewn material to move; the first dragging module (21) and the second dragging module (22) are both electrically connected to the electric control module (3) to control the start and stop of the first dragging module (21) and the second dragging module (22).

7. The sewing equipment for non-continuous stitching according to claim 6 is characterized in that: In the sewing state, a first dragging module (21) is used to drag the material to be sewn, and in the resting state, a second dragging module (22) is used to drag the material to be sewn, and the dragging speed of the second dragging module (22) is lower than the dragging speed of the first dragging module (21).

8. The sewing equipment suitable for non-continuous stitching according to claim 6 is characterized in that: The first dragging module (21) and the second dragging module (22) respectively comprise an upper roller (23), a lower roller (24) and a dragging driving member (25); the upper roller (23) and the lower roller (24) are arranged in parallel up and down, and a gap is left between them for the seam material to pass through; the dragging driving member (25) is electrically connected to the electric control module (3) for driving the upper roller (23) and / or the lower roller (24) to rotate, so that the upper roller (23) and the lower roller (24) jointly clamp the seam material to move; and the gap between the upper roller (23) and the lower roller (24) is adjustable.

9. The sewing equipment suitable for non-continuous stitching according to claim 8, characterized in that: The upper roller (23) is arranged to float elastically in the longitudinal direction to elastically press the top surface of the material to be sewn; and a clearance groove (241) is formed around the circumference of the upper roller (23) and / or the lower roller (24).

Images