Needle structure of upper pulling machine

Abstract

The utility model relates to the field of upper pulling machines, in particular to a needle structure of an upper pulling machine, which comprises a needle pin provided with a lock hole and a mounting hole; the lower wire passing sheet is locked with the lock hole, and the lower wire passing sheet is provided with a positioning hole; the needle sleeve is in coaxial sliding fit with the positioning hole and the mounting hole, and a through hole is formed in the needle sleeve along the axis; one end of the needle main body extends into the mounting hole and is fixedly connected with the needle pin, and the other end is in sliding fit with the through hole; and two ends of the elastic piece are fixedly connected with the needle sleeve and the needle main body respectively. The needle structure of the upper pulling machine can avoid the situation that normal thread hooking and continuous needle skipping cannot be achieved when anti-puncture materials are sewn, the using performance of the upper pulling machine is guaranteed, the sewing quality is improved, and the needle structure is particularly suitable for sewing the anti-puncture materials.

Description

Technical Field

[0001] The utility model relates to the field of lasting machines, in particular to a needle structure of lasting machines. Background Art

[0002] The structure of the upper lacing machine can refer to the Chinese invention patent application number CN201310239276.0, which is named Upper Lapping Machine. When sewing puncture-proof materials, the traditional upper lacing machine has problems such as failure to properly hook the thread and continuous stitch skipping, which increases the difficulty of sewing, causing the upper lacing machine to be unable to be used normally and has an adverse effect on the sewing quality. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a lasting machine needle structure to avoid normal thread hooking and continuous stitch skipping when sewing anti-puncture materials.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a needle structure of a lasting machine, comprising:

[0005] Needle grenade, with locking hole and mounting hole;

[0006] The lower thread piece is locked with the lock hole, and the lower thread piece is provided with a positioning hole;

[0007] The needle sleeve is coaxially slidably matched with the positioning hole and the mounting hole, and the needle sleeve is provided with a through hole along the axis;

[0008] The needle body has one end extending into the mounting hole and fixedly connected to the needle grenade, and the other end slidingly cooperates with the through hole;

[0009] The elastic member has two ends fixedly connected to the needle sleeve and the needle body respectively.

[0010] Furthermore, the needle grenade is provided with a fixing hole which penetrates to the mounting hole, and one end of the needle body is fixedly connected to the needle grenade by a fastener which extends into the fixing hole.

[0011] Furthermore, a pressing surface for pressing the stitches and the fabric is provided at one end of the needle sleeve away from the needle.

[0012] Furthermore, the other end of the needle body is provided with a fixing portion for fixing the elastic member.

[0013] Furthermore, the lower wire passing piece is provided with a lower wire passing hole.

[0014] Furthermore, the elastic member is a spring.

[0015] Furthermore, it also includes an upper threading piece, and the upper threading piece is provided with an upper threading hole.

[0016] The beneficial effects of the utility model are: a needle structure of a lasting machine, the lock hole of the needle piezo is used to install the lower thread plate, the installation hole of the needle piezo and the positioning hole of the lower thread plate are provided for the needle sleeve to slide along the axial direction, the needle sleeve is arranged outside the needle body, the through hole is provided for the needle body to pass through and slide with it, the needle sleeve is connected to the needle body through an elastic member to elastically support it, the needle piezo, needle sleeve, needle sleeve spring, and needle are closely matched, especially when sewing anti-puncture materials, the sewing thread and the material can be stably pressed, and when the needle sleeve presses the material, the sewing thread is also pressed. When in use, the needle piezo is assembled on the needle rod, and the mechanical assembly is driven to move forward and backward. When sewing, after the needle body passes through the material, the needle sleeve supports the material and retracts 5 to 7 mm relative to the needle body. When the needle is retracted 5 to 7 mm, the needle sleeve supports the material and the sewing thread under the support of the elastic member, so that a coil can be formed at the hooking position, and the hook needle can smoothly hook the sewing thread. The needle structure of the sew-on machine provided by the utility model can avoid normal thread hooking and continuous stitch skipping when sewing anti-puncture materials, thereby ensuring the performance of the sew-on machine, improving the sewing quality, and is particularly suitable for sewing anti-puncture materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the needle structure of the lasting machine;

[0018] Figure 2 This is an exploded view of the needle structure of the lathe;

[0019] Description of labels:

[0020] 1. Needle grenade; 11. Locking hole; 12. Mounting hole; 13. Fixing hole; 14. Fastener; 2. Lower thread piece; 21. Positioning hole; 22. Lower thread hole; 3. Needle sleeve; 31. Through hole; 32. Pressing plane; 4. Needle body; 41. Fixing part; 5. Elastic part; 6. Upper thread piece; 61. Upper thread hole. DETAILED DESCRIPTION

[0021] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in conjunction with the implementation modes and the accompanying drawings.

[0022] The utility model provides a lasting machine needle structure used in sewing operations of puncture-proof materials.

[0023] Please refer to Figure 1 to Figure 2 As shown, a needle structure of a lasting machine of the utility model comprises:

[0024] The needle grenade 1 is provided with a locking hole 11 and a mounting hole 12;

[0025] The lower thread piece 2 is locked with the lock hole 11, and the lower thread piece 2 is provided with a positioning hole 21;

[0026] The needle sleeve 3 is coaxially slidably matched with the positioning hole 21 and the mounting hole 12, and the needle sleeve 3 is provided with a through hole 31 along the axis;

[0027] The needle body 4 has one end extending into the mounting hole 12 and fixedly connected to the needle grenade 1, and the other end slidingly cooperates with the through hole 31;

[0028] The elastic member 5 has two ends fixedly connected to the needle sleeve 3 and the needle body 4 respectively.

[0029] From the above description, it can be seen that the beneficial effects of the utility model are: a needle structure for a lasting machine, the lock hole 11 of the needle grenade 1 is used to install the lower thread piece 2, the mounting hole 12 of the needle grenade 1 and the positioning hole 21 of the lower thread piece 2 are provided for the needle sleeve 3 to slide axially, the needle sleeve 3 is sleeved on the outside of the needle body 4, the through hole 31 is provided for the needle body 4 to pass through and slide with it, the needle sleeve 3 is connected to the needle body 4 through the elastic member 5 to elastically support it, the needle chuck, the needle sleeve 3, the needle sleeve 3 spring, and the needle are closely matched, especially when sewing anti-puncture materials, the sewing thread and the material can be stably pressed, and when the needle sleeve 3 presses the material, it also presses the sewing thread. When in use, the needle 1 is assembled on the needle bar, and the mechanical assembly drives the forward and backward movements. When sewing, after the needle body 4 passes through the material, the needle sleeve 3 supports the material and retracts 5 to 7 mm relative to the needle body 4. When the needle is retracted 5 to 7 mm, the needle sleeve 3 supports the material and the sewing thread under the support of the elastic member 5, so that the loop can be formed at the hooking position, and the hook needle can smoothly hook the sewing thread. The needle structure of the lasting machine provided by the utility model can avoid the failure of normal hooking and continuous stitch skipping when sewing anti-puncture materials, ensure the use performance of the lasting machine, improve the sewing quality, and is particularly suitable for sewing anti-puncture materials.

[0030] In an optional embodiment, the needle grenade 1 is provided with a fixing hole 13 penetrating to the mounting hole 12 , and one end of the needle body 4 is fixedly connected to the needle grenade 1 via a fastener 14 extending into the fixing hole 13 .

[0031] It can be seen from the above description that after the needle body 4 is installed into the mounting hole 12 , the fastener 14 is passed through the fixing hole 13 to fix and lock it.

[0032] In an optional embodiment, a pressing surface 32 for pressing the stitches and the fabric is provided at one end of the needle sleeve 3 away from the needle grenade 1 .

[0033] It can be seen from the above description that the pressing plane 32 is used to press the stitching and the fabric at the same time.

[0034] In an optional embodiment, a fixing portion 41 for fixing the elastic member 5 is provided at the other end of the needle body 4 .

[0035] It can be seen from the above description that the fixing portion 41 is used to clamp the elastic member 5 to fix and limit the elastic member 5.

[0036] In an optional embodiment, the lower wire passing piece 2 is provided with a lower wire passing hole 22 .

[0037] In an optional embodiment, the elastic member 5 is a spring.

[0038] In an optional embodiment, an upper threading piece 6 is further included, and the upper threading piece 6 is provided with an upper threading hole 61 .

[0039] Please refer to Figure 1 to Figure 2 As shown, the first embodiment of the utility model is: a needle structure of a lasting machine, comprising:

[0040] The needle grenade 1 is provided with a locking hole 11 and a mounting hole 12;

[0041] The lower thread piece 2 is locked with the lock hole 11, and the lower thread piece 2 is provided with a positioning hole 21;

[0042] The needle sleeve 3 is coaxially slidably matched with the positioning hole 21 and the mounting hole 12, and the needle sleeve 3 is provided with a through hole 31 along the axis;

[0043] The needle body 4 has one end extending into the mounting hole 12 and fixedly connected to the needle grenade 1, and the other end slidingly cooperates with the through hole 31;

[0044] The elastic member 5 has two ends fixedly connected to the needle sleeve 3 and the needle body 4 respectively.

[0045] The needle grenade 1 is provided with a fixing hole 13 which passes through the mounting hole 12, and one end of the needle body 4 is fixedly connected to the needle grenade 1 by a fastener 14 which extends into the fixing hole 13. The end of the needle sleeve 3 which is away from the needle grenade 1 is provided with a pressing plane 32 for pressing the sewing thread and the fabric. The other end of the needle body 4 is provided with a fixing portion 41 for fixing the elastic member 5. The lower thread plate 2 is provided with a lower thread hole 22. The elastic member 5 is a spring. It also includes an upper thread plate 6, which is provided with an upper thread hole 61.

[0046] In summary, in the needle structure of the lasting machine of the utility model, the lock hole of the needle dart is used to install the lower thread plate, the installation hole of the needle dart and the positioning hole of the lower thread plate are used for the needle sleeve to slide axially, the needle sleeve is arranged outside the needle body, the through hole is used for the needle body to pass through and slide with it, the needle sleeve is connected to the needle body through an elastic member to elastically support it, the needle dart, needle sleeve, needle sleeve spring, and needle are closely matched, especially when sewing anti-puncture materials, the sewing thread and the material can be stably pressed, and when the needle sleeve presses the material, it also presses the sewing thread. When in use, the needle dart is assembled on the needle rod, and the mechanical assembly is driven to move forward and backward. When sewing, after the needle body passes through the material, the needle sleeve supports the material and retracts 5 to 7 mm relative to the needle body. When the needle is retracted 5 to 7 mm, the needle sleeve supports the material and the sewing thread under the support of the elastic member, so that a coil can be formed at the hooking position, allowing the hook needle to smoothly hook the sewing thread. The needle structure of the sew-on machine provided by the utility model can avoid normal thread hooking and continuous stitch skipping when sewing anti-puncture materials, thereby ensuring the performance of the sew-on machine, improving the sewing quality, and is particularly suitable for sewing anti-puncture materials.

[0047] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.

Claims

1. A needle structure for a lasting machine, characterized in that: include: Needle grenade, with locking hole and mounting hole; The lower thread piece is locked with the lock hole, and the lower thread piece is provided with a positioning hole; The needle sleeve is coaxially slidably matched with the positioning hole and the mounting hole, and the needle sleeve is provided with a through hole along the axis; The needle body has one end extending into the mounting hole and fixedly connected to the needle grenade, and the other end slidingly cooperates with the through hole; The elastic member has two ends fixedly connected to the needle sleeve and the needle body respectively.

2. The needle structure of the lasting machine according to claim 1, characterized in that: The needle grenade is provided with a fixing hole which penetrates to the mounting hole, and one end of the needle body is fixedly connected with the needle grenade through a fastener which extends into the fixing hole.

3. The needle structure of the lasting machine according to claim 1, characterized in that: One end of the needle sleeve away from the needle guillotine is provided with a pressing surface for pressing the stitches and the fabric.

4. The needle structure of the lasting machine according to claim 1, characterized in that: The other end of the needle body is provided with a fixing portion for fixing the elastic member.

5. The needle structure of the lasting machine according to claim 1, characterized in that: The lower wire passing piece is provided with a lower wire passing hole.

6. The needle structure of the lasting machine according to claim 1, characterized in that: The elastic member is a spring.

7. The needle structure of the lasting machine according to claim 1, characterized in that: It also includes an upper threading piece, which is provided with an upper threading hole.

Images