Wear-resistant sewing machine needle

Abstract

The utility model belongs to the technical field of garment production, and relates to a wear-resistant sewing machine needle head which comprises a needle rod and a needle tail movably connected with the needle rod, a mounting hole is formed in the end face of the needle rod, a first spring is arranged on the inner wall of the mounting hole, one end of the first spring is fixedly connected with the mounting hole, and the other end of the first spring is connected with an abutting plate. The upper end face of the needle tail is provided with a connecting column used for extending into the mounting hole, the upper end face of the connecting column abuts against the abutting plate, the outer wall of the needle rod is provided with two fixing pieces, each fixing piece comprises a mounting block and a connecting rod rotationally connected with the mounting block, and the end of each connecting rod is provided with a connecting block. Connecting grooves corresponding to the connecting blocks are formed in the peripheral wall of the needle tail, a through groove communicated with the connecting grooves is formed between the connecting grooves, an elastic piece is arranged in the through groove, and the elastic piece is clamped with the connecting blocks; compared with the prior art, abrasion caused by rigid contact between the needle tail and an impactor is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of garment production, more specifically, it relates to a wear -resisting sewing machine needle. BACKGROUND

[0002] In the sewing process, in order to achieve the ideal cooperation of machine needle and sewing material, sewing thread, the appropriate machine needle must be selected. The type of machine needle is determined by the model specification of the sewing machine and the nature of the sewing material. The working nature of the machine determines the selection of the machine needle. Different types of machines are equipped with different types of machine needles. Regardless of the type of machine, the specification of the machine needle, i.e. the needle number, should be selected according to the nature and thickness of the sewing material during the sewing process. Generally speaking, the machine needle for textiles and knitted products has a conical needle tip. When sewing leather and similar materials, special shaped needle tips such as spear tips, diamond tips and reverse twist tips are used to increase the strength of the machine needle and achieve good sewing results.

[0003] For example, the authorized announcement No. CN216551039U discloses a high-reliability sewing machine needle, which sets the needle stem and the needle tail as a detachable structure. When the needle head needs to be replaced, the needle head can be quickly disassembled and replaced with new parts. This setting can save costs without replacing the entire sewing machine needle body, and the installation process is simple and practical.

[0004] In the above-mentioned scheme, although the purpose of replacing the needle tail alone is achieved, during the use of the sewing machine, the machine needle may collide with the workbench. When the needle tail is hit, the needle tip may be worn or even broken, affecting the service life of the needle tail and increasing production costs. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies of the prior art, the purpose of the utility model is to provide a wear-resistant sewing machine needle head with a longer service life.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] A wear-resistant sewing machine needle head, comprising a needle stem and a needle tail movably connected with the needle stem, the needle stem end face is provided with a mounting hole, the mounting hole inner wall is provided with a spring one, one end of the spring one is fixedly connected with the mounting hole, the other end of the spring one is connected with a resisting plate, the mounting hole two side walls are provided with grooves for the resisting plate to extend into,

[0008] The needle tail upper end face is provided with a connecting column for extending into the mounting hole, the connecting column upper end face abuts against the resisting plate,

[0009] The outer wall of the needle rod is provided with two fixing members, the fixing member comprises a mounting block and a connecting rod rotationally connected with the mounting block, the end of the connecting rod is provided with a connecting block,

[0010] The outer peripheral wall of the needle tail is provided with connecting grooves corresponding to the connecting blocks, connecting grooves are provided between the connecting grooves and are communicated with the connecting grooves, the connecting grooves are provided with elastic members, and the elastic members are clamped with the connecting blocks.

[0011] The utility model further sets up: the elastic member includes spring two and rod body, spring two one end connects the other end with the rod body and is connected with the connecting groove inner wall, the rod body is provided with the installation cavity, two groups of clamping balls are provided with the installation rod between the installation cavity, the installation rod is provided with spring three, and the other end of spring three is connected with the clamping ball.

[0012] The utility model further sets up: the connecting block is provided with the fixed slot that the rod body extends in, and the fixed slot inner wall is provided with the clamping groove connected with the clamping ball.

[0013] The utility model further sets up: the mounting block lower end surface is provided with the installation groove, and the one end of the connecting rod extends into the installation groove, and the connecting rod is fixed through the pin rod, and the connecting rod is rotationally connected with the pin rod, and the side wall of the mounting block is provided with the screw rod, and one end of the screw rod is abutted with the connecting rod.

[0014] The utility model further sets up: the abutment plate has elasticity.

[0015] The utility model further sets up: the connecting block has elasticity.

[0016] Compared with the prior art, the utility model has the beneficial effects that:

[0017] By clamping and connecting the needle rod and the needle tail, the needle rod and the needle tail are quickly disassembled and assembled, the installation time is reduced, the production cost is reduced, further, the spring one is installed at the connecting place of the needle tail and the needle rod, when the needle tail is impacted, the elastic force of the spring one can buffer the needle tail, the wear and tear caused by the rigid contact between the needle tail and the impact object is avoided, the abutment plate is arranged between the connecting column and the spring, when the needle tail normally works, the stress is small, the abutment plate does not deform, and the work of the needle tail is not affected, further, the elastic member is arranged between the needle tail and the connecting block, so that the connection between the needle tail and the needle rod is more stable. BRIEF DESCRIPTION OF DRAWINGS

[0018] Fig. 1 It is the structure sectional view of the utility model embodiment;

[0019] Fig. 2 It is the separation schematic view of the needle rod and the needle tail of the utility model embodiment;

[0020] Fig. 3 It is the fixing member structure schematic view of the utility model embodiment;

[0021] Fig. 4 The elastic member structure schematic view of the utility model embodiment.

[0022] The needle stem 1, the needle tail 2, the mounting hole 3, spring one 4, the contact plate 5, the connecting column 6, the mounting block 7, the connecting rod 8, the connecting block 9, the connecting groove 10, the through slot 11, spring two 12, the rod body 13, the installation cavity 14, the clamping ball 15, the mounting rod 16, the fixed groove 17, the clamping groove 18, the mounting groove 19, the pin rod 20. DETAILED DESCRIPTION

[0023] The technical scheme in the utility model embodiments will be described clearly and completely below in conjunction with the drawings in the utility model embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0024] In the description of the utility model, it is understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0025] As shown in Figs. 1 to 4 , the needle tail 2 upper end surface is equipped with the connecting column 6 for the recess of the extension of the installation hole 3, and the connecting column 6 upper end surface is in contact with the contact plate 5, and the contact plate 5 has elasticity, and the spring force of spring one 4 can buffer the needle tail 2, avoid the needle tail 2 and the impact object rigid contact and cause abrasion, when the needle tail 2 normal work, the hardness of the contact plate 5 will not affect the normal work of the needle tail 2.

[0026] A kind of wear-resistant sewing machine needle, including needle stem 1 and the needle tail 2 movably connected with needle stem 1, needle stem 1 end surface is equipped with mounting hole 3, the inner wall of mounting hole 3 is equipped with spring one 4, spring one 4 one end is fixedly connected with mounting hole 3, spring one 4 other end is connected with contact plate 5, the two side walls of mounting hole 3 are equipped with recess for the extension of contact plate 5.

[0027] The needle tail 2 upper end surface is equipped with the connecting column 6 for the recess of the extension of the installation hole 3, and the connecting column 6 upper end surface is in contact with the contact plate 5, and the contact plate 5 has elasticity, and the spring force of spring one 4 can buffer the needle tail 2, avoid the needle tail 2 and the impact object rigid contact and cause abrasion, when the needle tail 2 normal work, the hardness of the contact plate 5 will not affect the normal work of the needle tail 2.

[0028] The needle stem 1 outer wall is equipped with two fixed parts, and the fixed part includes mounting block 7 and connecting rod 8 rotatably connected with mounting block 7, and the end of connecting rod 8 is equipped with connecting block 9, and connecting block 9 has elasticity, facilitating the insertion of connecting block 9 into connecting groove 10.

[0029] The lower end surface of the mounting block 7 is provided with a mounting groove 19, one end of the connecting rod 8 extends into the mounting groove 19, and the connecting rod 8 is fixed through a pin 20, the connecting rod 8 is rotatably connected with the pin 20, the side wall of the mounting block 7 is provided with a screw rod, one end of the screw rod abuts against the connecting rod 8, the connecting rod 8 is rotatably connected with the mounting block 9 and the mounting groove 19, the screw rod abuts against the connecting rod 8 to limit the connecting rod 8, and thus the connection between the needle stem 1 and the needle tail 2 is more stable after the mounting is completed.

[0030] The outer peripheral wall of the needle tail 2 is provided with a connecting groove 10 corresponding to the connecting block 9, connecting grooves 10 are provided with a through groove 11 in communication with the connecting grooves 10, the through groove 11 is provided with an elastic member, and the elastic member is clamped with the connecting block 9.

[0031] The elastic member comprises a spring 12 and a rod body 13, one end of the spring 12 is connected with the inner wall of the through groove 11, the other end is connected with the rod body 13, the rod body 13 is provided with a mounting cavity 14, two sets of clamping balls 15 are symmetrically arranged in the mounting cavity 14, a mounting rod 16 is arranged between the two sets of clamping balls 15, a spring 3 is connected on the mounting rod 16, the other end of the spring 3 is connected with the clamping ball 15, the connecting block 9 is provided with a fixed groove 17 for the rod body 13 to extend into, the inner wall of the fixed groove 17 is provided with a clamping groove 18 connected with the clamping ball 15, and the connecting block 9 and the needle tail 2 are more stably connected through the clamping of the clamping ball 15 and the clamping groove 18.

[0032] Working principle: during installation, the connecting column 6 is first inserted into the mounting hole 3, then the screw rod is screwed out, the connecting rod 8 is rotated, the connecting block 9 extends into the connecting groove 10, the elastic member extends into the fixed groove 17, and under the extrusion of the inner wall of the fixed groove 17, the clamping ball 15 retracts into the mounting cavity 14, when the rod body 13 moves to the vicinity of the clamping groove 18, under the elastic force of the spring 12, the clamping ball 15 is bounced into the clamping groove 18 to fix the connecting block 9, and then the screw rod is screwed to further fix it, when the needle tail 2 is impacted, the elastic force of the spring 1 can buffer the needle tail 2, avoid the needle tail 2 and the impact object to be in rigid contact to cause abrasion, and the connecting column 6 and the spring are provided with an abutting plate 5, the needle tail 2 works normally, the stress is small, the abutting plate 5 does not deform, and the work of the needle tail 2 is not affected, and further, the elastic member between the needle tail 2 and the connecting block 9 makes the connection between the needle tail 2 and the needle stem 1 more stable.

[0033] When disassembly is needed, the above operation is repeated, the clamping ball 15 retracts under the pressure, and the connecting block 9 and the elastic member are separated.

[0034] The above only describes the preferred embodiment of the present application, and is not used to limit the present application, and the skilled in the art can make common changes and replacements within the technical scheme range of the present application, which should be included in the protection range of the present application.

Claims

1. A wear-resistant sewing machine needle comprising a needle shank (1) and a needle butt (2) movably connected with the needle shank (1), characterized in that: The needle stem (1) end face is provided with a mounting hole (3), the inner wall of the mounting hole (3) is provided with a spring (4), one end of the spring (4) is fixedly connected with the mounting hole (3), the other end of the spring (4) is connected with a contact plate (5), the two side walls of the mounting hole (3) are provided with grooves for the contact plate (5) to extend into, The needle tail (2) upper end face is provided with a connecting column (6) for extending into the mounting hole (3), the upper end face of the connecting column (6) is in contact with the contact plate (5), The outer wall of the needle stem (1) is provided with two fixing members, the fixing member comprises a mounting block (7) and a connecting rod (8) rotatably connected with the mounting block (7), the end of the connecting rod (8) is provided with a connecting block (9), The outer peripheral wall of the needle tail (2) is provided with a connecting groove (10) corresponding to the connecting block (9), the connecting groove (10) is provided with a through groove (11) in communication with the connecting groove (10), the through groove (11) is provided with an elastic member, and the elastic member is clamped with the connecting block (9).

2. A wear resistant sewing machine needle according to claim 1 wherein: The elastic member comprises a spring (12) and a rod body (13), one end of the spring (12) is connected with the inner wall of the through groove (11), the other end of the spring (12) is connected with the rod body (13), the rod body (13) is provided with an installation cavity (14) in the inner wall, two groups of clamping balls (15) are symmetrically arranged in the installation cavity (14), an installation rod (16) is arranged between the two groups of clamping balls (15), a spring (3) is connected to the installation rod (16), and the other end of the spring (3) is connected with the clamping ball (15).

3. A wear resistant sewing machine needle according to claim 2 wherein: The connecting block (9) is provided with a fixing groove (17) for the rod body (13) to extend into, and the inner wall of the fixing groove (17) is provided with a clamping groove (18) connected with the clamping ball (15).

4. A wear resistant sewing machine needle according to claim 3 wherein: The lower end face of the mounting block (7) is provided with a mounting groove (19), one end of the connecting rod (8) extends into the mounting groove (19), the connecting rod (8) is fixed by a pin rod (20), the connecting rod (8) is rotatably connected with the pin rod (20), the side wall of the mounting block (7) is provided with a screw rod, and one end of the screw rod is in contact with the connecting rod (8).

5. A wear resistant sewing machine needle according to claim 4 wherein: The contact plate (5) has elasticity.

6. A wear resistant sewing machine needle according to claim 5 wherein: The connecting block (9) has elasticity.

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