Fixed-interval hole pricking device

Abstract

The utility model relates to a fixed-interval hole pricking device which comprises a base. The hole pricking mechanism is arranged on the base and comprises a needle plate capable of moving up and down, a plurality of hole pricking needles are installed on the needle plate at fixed intervals, and needle heads face downwards; the hole pricking bottom plate is arranged on the base and provided with a plurality of needle holes at fixed intervals, the number of the needle holes is consistent with that of the hole pricking needles, the needle holes and the hole pricking needles are in one-to-one correspondence, and the concentricity of each needle hole and each hole pricking needle is consistent. Compared with the prior art, hole sites with fixed intervals can be provided, later sewing is facilitated, consistency of sewing intervals is guaranteed, and product quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hole punching, in particular to a fixed-distance hole punching device. Background Art

[0002] In current social production and manufacturing, sewing technology mostly uses sewing machines. Its working principle is that the machine needle, shuttle and sewing thread cooperate in various ways. The machine tightens the sewing thread and intersects the sewing thread in the middle of the sewing base material. From the cross-section, it looks like two locks locked together, which is also called chain sewing. The current production methods mainly include: (1) Feeding cloth: The machine needle descends from top to bottom, and at the same time, the cloth is conveyed to the bottom of the machine needle. When the machine needle is about to approach the cloth, the cloth feeding is stopped. (2) Needle threading: After the machine needle threading, it continues to descend. When the needle head passes through the cloth and descends to the lowest point, the thread is pulled down by the needle hole and the squeeze force between the needle bar and the sewing material, so that it is close to the needle bar and is located directly above the needle hole. (3) Thread loop formation: When the machine needle is at the lowest position, the thread works to form a loop under the joint action of the sewing material, machine needle, needle groove and shuttle bed cover. (4) Shuttle thread hooking: The shuttle tip rotates to hook the thread loop and pull the thread around the bottom of the shuttle core sleeve. (5) Upper thread leads to lower thread: When the shuttle hooks the thread and rotates to the bottom of the shuttle, the thread take-up rod no longer takes up the thread but rises to retract the upper thread, causing the thread loop to shrink and move to wrap around the lower thread. (6) Tightening stitch stage: With the cooperation of multiple functions, the machine tightens the sewing seam and the stitching is finally completed. Its high production efficiency is widely used in the daily life of today's society, but it also exposes certain defects: (1) When sewing, the sewing machine will interlock two or more suture threads together, and the tear strength of each thread node is consistent. However, if one of the suture threads breaks, the interlocking of its thread nodes fails, and the tear strength of the surrounding thread nodes is instantly reduced and extended over a large range. This is a defect for products that require each thread node to have the same tear strength. (2) The stitching stitch length and stitching width of the sewing machine will change with the use of the equipment, which will eventually lead to uncontrollable substrate stitching width and suture thread node distance. Utility Model Content

[0003] The purpose of the utility model is to provide a fixed-distance piercing device in order to overcome the defects of the above-mentioned prior art, which can provide fixed-distance hole sites to facilitate later suturing, ensure the consistency of suturing spacing, and improve product quality.

[0004] The purpose of the utility model can be achieved through the following technical solutions:

[0005] A fixed-distance piercing device, comprising:

[0006] Base;

[0007] The piercing mechanism disposed on the base includes a needle plate that can move up and down, and a plurality of piercing needles at a fixed interval are installed on the needle plate, with the needle heads facing downwards;

[0008] And a piercing bottom plate is arranged on the base and has a plurality of pinholes with fixed spacing, the pinholes are consistent in number and correspond one to one with the piercing needles, and the concentricity of each pinhole is consistent with that of the piercing needle.

[0009] Furthermore, the piercing mechanism comprises:

[0010] a bracket fixed to the base;

[0011] A first anchor head disposed at the top end of the bracket;

[0012] A pressing rod having one end rotatably connected to the anchor head;

[0013] And a needle seat rotatably connected to the pressing rod, the needle plate is installed on the needle seat, and the rotation of the pressing rod drives the needle seat to move up and down.

[0014] Furthermore, an axial guide rail is arranged on one side of the bracket close to the needle seat, and a slider which moves along the axial guide rail is arranged on the back of the needle seat, so as to control the needle seat to move only in the vertical direction without deviation in the horizontal direction.

[0015] Furthermore, the needle seat is connected to the pressing rod via a connecting rod, one end of the connecting rod is fixedly connected to the needle seat, and the other end of the connecting rod is fixed with a second anchor head, and the second anchor head is rotatably connected to the pressing rod.

[0016] Furthermore, an axial fixing block is provided at the top of the bracket close to the needle seat side, and the axial fixing block has a vertical hole for the connecting rod to pass through for limiting. The axial fixing block is used to fix the connecting rod, and the hole above it is used to keep the connecting rod in vertical movement without other position deviations, thereby ensuring the cooperation between the puncture needle and the puncture base plate.

[0017] Furthermore, a baffle is provided on one side of the perforated bottom plate, and the sewing edge of the sewing substrate is against the baffle. The baffle can be adjusted forward and backward to adjust the sewing width; the distance between the needle plate and the perforated bottom plate determines the sewing needle distance. If adjustment is required, the needle plate and the perforated bottom plate with the same distance need to be replaced.

[0018] Furthermore, the diameter of the pinhole is smaller than the diameter of the puncturing needle.

[0019] Furthermore, the diameter of the pinhole is smaller than the diameter of the puncture needle by 0 to 0.1 mm, excluding 0.

[0020] Furthermore, the center distance between two adjacent puncturing needles is equal, the center distance between two adjacent pinholes is equal, and the center distance between the puncturing needles is equal to the center distance between the pinholes.

[0021] Furthermore, the base is provided with a plurality of connection holes arranged in an array, and the bottom of the perforated bottom plate is provided with a plurality of connection columns, the connection columns are inserted into the connection holes to fix the perforated bottom plate, and the height of the perforated bottom plate is adjustable.

[0022] Furthermore, a connecting block is provided at the bottom of the piercing mechanism, and is fixedly connected to the base via the connecting block.

[0023] Compared with the prior art, the utility model has the following advantages:

[0024] (1) The device can punch holes in the substrate. The spacing between the holes is fixed and not prone to deviation, which can ensure the accuracy of the punching position. For products with high requirements for suture width and suture needle spacing, the device can pre-punch the suture surface of the suture substrate to ensure the geometric size requirements of the suture substrate, ensure the consistency of subsequent suture dimensions, and improve product quality. Under the same state of the suture substrate, the fixed-distance device is used to pre-punch holes and then sew manually. The tear resistance of each suture node is higher than that of the nodes sutured by traditional sewing machines.

[0025] (2) Manual suturing after fixed-distance puncturing has many applications in the fields of medical devices, aerospace (aircraft insulation covers), and spacecraft (parachutes). Its absolutely consistent suturing size and suturing distance can evenly distribute the external force to each suturing node when the suturing node is impacted by external force, so that the suturing nodes are subjected to uniform force, eliminating the breakage, tearing, and other phenomena caused by uneven force on the line nodes due to inconsistent suturing width and suturing spacing. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic structural diagram of the fixed-pitch hole punching device shown in Example 1.

[0027] 1-base, 11-connection hole;

[0028] 2-piercing mechanism, 21-needle plate, 22-piercing needle, 23-bracket, 24-first anchoring head, 25-pressing rod, 26-needle seat, 27-axial guide rail, 28-axial fixing block, 281-hole, 29-connecting rod, 291-second anchoring head;

[0029] 3-perforated bottom plate, 31-pinhole, 32-baffle, 33-connecting column. DETAILED DESCRIPTION

[0030] The utility model is described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments are implemented based on the technical solution of the utility model, and provide detailed implementation methods and specific operation processes, but the protection scope of the utility model is not limited to the following embodiments. In the following implementation methods or embodiments, if there is no special description of the functional components or structures, it indicates that they are all conventional components or conventional structures used in the field to achieve the corresponding functions.

[0031] It should be noted that in the description of the present invention, the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, 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, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" 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 a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] Example 1

[0034] A fixed-distance piercing device, comprising:

[0035] Base 1;

[0036] The piercing mechanism 2 is arranged on the base 1, and comprises a needle plate 21 which can move up and down, and a plurality of piercing needles 22 with fixed intervals are installed on the needle plate 21, and the needle heads face downwards;

[0037] And a piercing bottom plate 3 is arranged on the base 1 and has a plurality of pinholes 31 with fixed intervals. The pinholes 31 are the same in number and correspond one to one with the piercing needles 22 , and each of the pinholes 31 has the same concentricity as the piercing needle 22 .

[0038] In this embodiment, the punching mechanism 2 comprises:

[0039] A bracket 23 fixed on the base 1;

[0040] A first anchor head 24 disposed at the top end of the bracket 23;

[0041] A pressing rod 25 having one end rotatably connected to the anchor head 24;

[0042] And a needle seat 26 rotatably connected to the pressing rod 25, the needle plate 21 is installed on the needle seat 26, and the rotation of the pressing rod 25 drives the needle seat 26 to move up and down.

[0043] In this embodiment, an axial guide rail 27 is provided on one side of the bracket 23 close to the needle seat 26, and a slider moving along the axial guide rail 27 is provided on the back of the needle seat 26 to control the needle seat 26 to move only in the vertical direction without horizontal deviation.

[0044] In this embodiment, the needle seat 26 is connected to the pressing rod 25 via a connecting rod 29 , one end of the connecting rod 29 is fixedly connected to the needle seat 26 , and the other end of the connecting rod 29 is fixed with a second anchor head 291 , which is rotatably connected to the pressing rod 25 .

[0045] In this embodiment, an axial fixing block 28 is provided at the top of the bracket 23 near the needle seat 26. The axial fixing block 28 has a vertical hole 281 for the connecting rod 29 to pass through for position limiting. The axial fixing block 28 is used to fix the connecting rod 29. The hole 281 above the axial fixing block 28 is used to keep the connecting rod 29 in vertical motion without other position deviations, thereby ensuring the cooperation between the piercing needle 22 and the piercing bottom plate 3.

[0046] Furthermore, a baffle 32 is provided on one side of the perforated bottom plate 3, and the sewing edge of the sewing substrate abuts against the baffle 32. The baffle 32 can be adjusted forward and backward to adjust the sewing width; the spacing between the needle plate 21 and the perforated bottom plate 3 determines the sewing needle distance, and if adjustment is required, the needle plate 21 and the perforated bottom plate 3 with the same spacing need to be replaced.

[0047] Furthermore, a baffle 32 is provided on one side of the perforated bottom plate 3 , and the sewing edge of the sewn substrate abuts against the baffle 32 .

[0048] In this embodiment, the diameter of the needle hole 31 is smaller than the diameter of the puncturing needle 22 by 0.1 mm.

[0049] In this embodiment, the center distance between two adjacent puncturing needles 22 is equal, the center distance between two adjacent needle holes 31 is equal, and the center distance between the puncturing needles 22 is equal to the center distance between the needle holes 31 .

[0050] In this embodiment, the base 1 is provided with a plurality of connection holes 11 arranged in an array, and the bottom of the perforated bottom plate 3 is provided with a plurality of connection columns 33, which are inserted into the connection holes 11 to fix the perforated bottom plate 3, and the height of the perforated bottom plate 3 is adjustable.

[0051] In this embodiment, a connecting block is provided at the bottom of the piercing mechanism 2, and is fixedly connected to the base 1 via the connecting block.

[0052] The working principle of the fixed-distance piercing device is as follows:

[0053] The piercing base plate 3 and the piercing mechanism 2 are fixed to the base plate 1 by the connecting column 33 and the connecting block and adjusted to an appropriate height. The suture substrate is laid flat on the piercing base plate 3, and the suture edge is pressed against the baffle 32. The pressing rod 25 is pressed by hand to drive the needle seat 26 to move up and down along the axial guide rail 27, so that the piercing needle 22 passes through the suture substrate to the needle hole 31. After completion, the pressing rod 25 is lifted upward, and at this time, holes with equal spacing will be left on the suture substrate.

[0054] After the suture substrate is punctured, a single suture thread is used to sew the suture substrate together. The first stitch of each suture node is fixed, and the second stitch is locked and the substrates are sewn in sequence. Under the same state of the suture substrate, holes are pre-punctured using a fixed spacing device and then sewn manually. The tear resistance of each suture node is higher than that of the node sewn by a traditional sewing machine.

[0055] The above description of the embodiments is to facilitate the understanding and use of the utility model by those skilled in the art. It is obvious that those familiar with the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative work. Therefore, the utility model is not limited to the above embodiments, and improvements and modifications made by those skilled in the art based on the disclosure of the utility model without departing from the scope of the utility model should be within the scope of protection of the utility model.

Claims

1. A fixed-pitch hole punching device, characterized in that: include: Base (1); A piercing mechanism (2) disposed on the base (1), comprising a needle plate (21) movable up and down, a plurality of piercing needles (22) at regular intervals being mounted on the needle plate (21), with the needle heads facing downwards; and a piercing bottom plate (3) arranged on the base (1) and having a plurality of needle holes (31) at regular intervals, wherein the number of the needle holes (31) and the piercing needles (22) are the same and correspond one to one, and each of the needle holes (31) and the piercing needle (22) have the same concentricity.

2. A fixed-distance piercing device according to claim 1, characterized in that: The punching mechanism (2) comprises: A bracket (23) fixed on the base (1); A first anchoring head (24) disposed at the top end of the bracket (23); A pressing rod (25) having one end rotatably connected to the anchor head (24); and a needle seat (26) rotatably connected to the pressing rod (25), wherein the needle plate (21) is mounted on the needle seat (26), and the pressing rod (25) rotates to drive the needle seat (26) to move up and down.

3. A fixed-distance piercing device according to claim 2, characterized in that: An axial guide rail (27) is arranged on one side of the bracket (23) close to the needle seat (26), and a slider which moves along the axial guide rail (27) is arranged on the back of the needle seat (26) to control the needle seat (26) to move only in the vertical direction.

4. A fixed-distance piercing device according to claim 2, characterized in that: The needle seat (26) is connected to the pressing rod (25) via a connecting rod (29), one end of the connecting rod (29) is fixedly connected to the needle seat (26), and the other end of the connecting rod (29) is fixed with a second anchor head (291), and the second anchor head (291) is rotatably connected to the pressing rod (25).

5. A fixed-distance piercing device according to claim 4, characterized in that: An axial fixing block (28) is provided at the top of the bracket (23) on one side close to the needle seat (26), and the axial fixing block (28) has a vertical hole (281) for the connecting rod (29) to pass through for limiting.

6. A fixed-distance piercing device according to claim 1, characterized in that: A baffle (32) is provided on one side of the perforated bottom plate (3).

7. A fixed-distance piercing device according to claim 1, characterized in that: The diameter of the needle hole (31) is smaller than the diameter of the puncturing needle (22).

8. A fixed-distance piercing device according to claim 1, characterized in that: The center distance between two adjacent puncturing needles (22) is equal, the center distance between two adjacent needle holes (31) is equal, and the center distance between the puncturing needles (22) is equal to the center distance between the needle holes (31).

9. A fixed-distance piercing device according to claim 1, characterized in that: The base (1) is provided with a plurality of connection holes (11) arranged in an array, and the bottom of the perforated bottom plate (3) is provided with a plurality of connection columns (33), and the connection columns (33) are inserted into the connection holes (11) to fix the perforated bottom plate (3).

10. A fixed-distance piercing device according to claim 1, characterized in that: A connecting block is provided at the bottom of the hole-piercing mechanism (2), and is fixedly connected to the base (1) via the connecting block.

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