Composite wear-resistant bushing assembly of sewing machine head

Abstract

The utility model belongs to the technical field of sewing machine accessories, and particularly relates to a sewing machine head composite wear-resisting bush assembly which comprises a bush body, a sewing machine head needle rod is connected into the bush body in a sliding and penetrating mode, and a first connecting block is connected to the surface of one side of the bottom end of the bush body. And the surface of the other side of the bottom end of the bushing body is connected with a second connecting block. The positioning blocks on the first connecting block and the second connecting block are inserted into the positioning grooves in the bush body, and then the first connecting block and the second connecting block are connected and fixed together through the first bolt, so that the brush body connected with the bottom of the connecting frame can surround the outer side of a sewing machine head needle rod; the sponge block on the inner side of the brush body can be in contact with the sewing machine head needle rod, so that when the sewing machine head needle rod reciprocates, the sponge block can block thread scraps attached to the sewing machine head needle rod, the thread scraps are prevented from entering the lining body to increase friction with the sewing machine head needle rod, and the service life of the lining body is ensured.

Description

TECHNICAL FIELD

[0001] The utility model belongs to sewing machine accessory technical field, concretely relates to a sewing machine head composite wear -resisting bush assembly. BACKGROUND

[0002] Sewing machine is a kind of equipment that utilizes mechanical movement, and it is used to sew together fabrics, leather and other materials by needle thread. It plays an important role in the fields of textile, garment making, home furnishing production and various handcrafts.

[0003] The sewing machine head is the core component of the sewing machine, and it undertakes the important task of completing the sewing action. The needle bar in the sewing machine head is provided with a bushing to reduce friction at the needle bar. However, during the use of the sewing machine head, some lint will adhere to the needle bar. With the reciprocating movement of the needle bar, these lint may enter the inside of the bushing, thereby increasing the friction between the needle bar and the bushing, causing the bushing to wear out more quickly, and thus affecting the service life of the bushing.

[0004] Therefore, the utility model provides a sewing machine head composite wear -resisting bush assembly to solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a sewing machine head composite wear -resisting bush assembly, which is designed to solve the problem that in the prior art, during the use of the existing sewing machine head, some lint will adhere to the needle bar. With the reciprocating movement of the needle bar, these lint may enter the inside of the bushing, thereby increasing the friction between the needle bar and the bushing, causing the bushing to wear out more quickly, and thus affecting the service life of the bushing.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a sewing machine head composite wear -resisting bush assembly, comprising a bushing body, the bushing body is slidably connected with a needle bar of a sewing machine head, and a first connecting block is connected to one side surface of the bottom end of the bushing body, a second connecting block is connected to the other side surface of the bottom end of the bushing body, the second connecting block is in contact with the first connecting block on one side surface of both ends, the bottom surface of the first connecting block and the second connecting block is symmetrically connected with a connecting frame, a brush body is connected to one side surface of the bottom end of the connecting frame, a sponge block is connected to the inner side surface of the brush body, and the inner side surface of the sponge block is in contact with the outer side surface of the needle bar of the sewing machine head.

[0007] As a preferred embodiment of the utility model, the first connecting block and the second connecting block are connected with a positioning block on one side surface facing the bushing body, one end of the positioning block is slidably inserted into a positioning groove, and the positioning groove is symmetrically arranged on the outer side surface of the bottom end of the bushing body.

[0008] Preferably, the second connecting block is provided with a limiting hole on one side surface at both ends, a first bolt is connected through the limiting hole, and a fixing hole is threadedly connected to the other end of the first bolt and is arranged on the side surface of the first connecting block facing the second connecting block.

[0009] Preferably, the sponge block is made of polyester sponge material.

[0010] Preferably, the brush body is symmetrically connected with a connecting lug on the outer side surface, one end of the connecting lug extends into the connecting groove, the connecting groove is symmetrically arranged on the bottom surface of the connecting frame, and the connecting lug is connected with the connecting frame through the connecting groove.

[0011] Preferably, the second bolt is connected through the outer side surface at the bottom end of the connecting frame, a threaded hole is threadedly connected to the other end of the second bolt, and the threaded hole is arranged on the side surface of the connecting lug away from the brush body.

[0012] Compared with the prior art, the application has the following beneficial effects:

[0013] The first connecting block and the second connecting block are inserted into the positioning groove on the sleeve body, and then the first connecting block and the second connecting block are connected and fixed together by the first bolt, so that the brush body connected to the bottom of the connecting frame can be wrapped around the outside of the needle rod of the sewing machine head, the sponge block on the inside of the brush body can be in contact with the needle rod of the sewing machine head, the sponge block can block the lint attached to the needle rod of the sewing machine head when the needle rod of the sewing machine head reciprocates, the lint is prevented from entering the inside of the sleeve body to increase the friction with the needle rod of the sewing machine head, and the service life of the sleeve body is ensured.

[0014] The second bolt can be separated from the threaded hole by screwing, the connecting lug on the brush body can slide out of the connecting groove, the brush body can be detached from the connecting frame, the operator can maintain and replace the brush body, and the use effect of the sponge block on the brush body is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the application, constitute a part of the specification, are used to explain the application together with embodiments of the application, and do not constitute a limitation on the application. In the drawings:

[0016] Figure 1 It is a three-dimensional structure schematic view of the application;

[0017] Figure 2 It is the bottom view structural schematic diagram of the utility model;

[0018] Figure 3 It is the local explosion structural schematic diagram of the utility model connecting block;

[0019] Figure 4 It is the local explosion structural schematic diagram of the utility model connecting frame.

[0020] In the drawing: 1, bush body;2, sewing machine head needle bar;3, first connecting block;4, second connecting block;5, positioning block;6, positioning groove;7, limiting hole;8, first bolt;9, fixed hole;10, connecting frame;11, brush body;12, sponge block;13, connecting convex block;14, connecting groove;15, second bolt;16, threaded hole. Specific implementation

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0022] Please refer to Figures 1-4 The utility model provides the following technical scheme: a sewing machine head composite wear -resisting bush subassembly, including bush body 1, bush body 1 inside sliding through connection sewing machine head needle bar 2, and bush body 1 bottom end place one side surface is connected with first connecting block 3, bush body 1 bottom end place other side surface is connected with second connecting block 4, and one side surface of both ends of second connecting block 4 is in contact with first connecting block 3, and the bottom surface of first connecting block 3 and second connecting block 4 is connected with connecting frame 10, and one side surface of connecting frame 10 bottom end place is connected with brush body 11, and the inside surface of brush body 11 is connected with sponge block 12, and the inside surface of sponge block 12 is in contact with the outside surface of sewing machine head needle bar 2.

[0023] Preferably: one side surface of first connecting block 3 and second connecting block 4 towards bush body 1 is connected with positioning block 5, and one end of positioning block 5 is slidably inserted into positioning groove 6, and positioning groove 6 is symmetrically arranged on the outside surface of bush body 1 bottom end place.

[0024] When used, the positioning block 5 on the first connecting block 3 and the second connecting block 4 can be slidably inserted into the positioning groove 6 on the bush body 1, so that the first connecting block 3 and the second connecting block 4 can be accurately placed at the specified position of the bush body 1.

[0025] Preferably, a limiting hole 7 is arranged on one side surface of the second connecting block 4 at two ends, a first bolt 8 is connected through the limiting hole 7, a fixing hole 9 is threadedly connected to the other end of the first bolt 8, and the fixing hole 9 is arranged on the side surface of the first connecting block 3 at two ends and faces the second connecting block 4.

[0026] In specific use, when the first connecting block 3 and the second connecting block 4 are placed at the specified positions of the bushing body 1 through the positioning block 5, the positions of the limiting hole 7 and the fixing hole 9 coincide with each other, the first bolt 8 is screwed into the fixing hole 9 through the limiting hole 7, the first connecting block 3 and the second connecting block 4 are connected together, the first connecting block 3 and the second connecting block 4 can be fixedly installed at the bottom end of the bushing body 1, and the first connecting block 3 and the second connecting block 4 can be separated by unscrewing the first bolt 8.

[0027] Preferably, the sponge block 12 is made of polyester sponge material.

[0028] In specific use, the sponge block 12 made of polyester sponge material has the characteristics of high density and tight texture, and the surface is relatively smooth and has relatively small friction, so that the sponge block 12 does not excessively hinder the movement of the needle bar 2 of the sewing machine, and the sponge block 12 can block the lint attached to the surface of the needle bar 2 from moving to the bushing body 1.

[0029] Preferably, the brush body 11 is symmetrically connected with a connecting protrusion 13 on the outer side surface, one end of the connecting protrusion 13 extends into a connecting groove 14, the connecting groove 14 is symmetrically arranged on the bottom surface of the connecting frame 10, and the connecting protrusion 13 and the connecting frame 10 are slidably connected through the connecting groove 14.

[0030] In specific use, the connecting protrusion 13 on the brush body 11 can slide in the connecting groove 14 on the bottom of the connecting frame 10, so that the connecting protrusion 13 on the brush body 11 can slide into or separate from the connecting groove 14 on the connecting frame 10.

[0031] Preferably, a second bolt 15 is connected through the outer side surface at the bottom end of the connecting frame 10, a threaded hole 16 is threadedly connected to the other end of the second bolt 15, and the threaded hole 16 is arranged on the side surface of the connecting protrusion 13 away from the brush body 11.

[0032] In specific use, when the connecting protrusion 13 on the brush body 11 is placed into the connecting groove 14 on the connecting frame 10, the second bolt 15 is screwed into the threaded hole 16 on the connecting protrusion 13 through the connecting frame 10, so that the connecting protrusion 13 is fixed in the connecting groove 14, and the brush body 11 can be installed on the connecting frame 10.

[0033] It should be noted that the bush body 1 is made of copper-based alloy composite material as raw material, so that the bush body 1 has good wear resistance, self-lubricating and corrosion resistance, and the friction coefficient of copper-based alloy is low, which can effectively reduce the wear between the needle bar 2 of the sewing machine head and the bush body 1, improve the working efficiency and stability of the sewing machine head, so the bush body 1 is a kind of composite wear-resistant bush.

[0034] The working principle is that when the sewing machine head composite wear-resistant bush assembly is used, the bush body 1 is installed at the specified position of the sewing machine head, the positioning groove 6 at the bottom end of the bush body 1 is exposed, the needle bar 2 of the sewing machine head is penetrated through the inside of the bush body 1, so that the needle bar 2 of the sewing machine head can reciprocate in the bush body 1 during use, the positioning blocks 5 on the first connecting block 3 and the second connecting block 4 are inserted into the positioning grooves 6 on the bush body 1 respectively, at this time the two ends of the first connecting block 3 and the second connecting block 4 are in contact, so that the limiting hole 7 and the fixed hole 9 are coincided together, then the first bolt 8 is penetrated through the limiting hole 7 and screwed into the fixed hole 9, so that the first connecting block 3 and the second connecting block 4 are connected together, and the first connecting block 3 and the second connecting block 4 can be fixedly installed at the bottom end of the bush body 1, at this time the brush body 11 connected by the bottom connecting frame 10 of the first connecting block 3 and the second connecting block 4 is in contact with each other, so that the brush body 11 is wrapped around the outside of the needle bar 2 of the sewing machine head, so that the sponge blocks 12 inside the brush body 11 are in contact with the needle bar 2 of the sewing machine head, so that the two sponge blocks 12 can wrap the needle bar 2 of the sewing machine head, so that when the needle bar 2 of the sewing machine head reciprocates with the attached thread scraps, the sponge blocks 12 can block the thread scraps attached to the needle bar 2 of the sewing machine head from moving to the bush body 1, thereby preventing the thread scraps from entering the inside of the bush body 1 to increase the friction with the needle bar 2 of the sewing machine head, thereby ensuring the service life of the bush body 1, and when the sponge blocks 12 need to be maintained, the second bolt 15 is screwed to separate the threaded hole 16, at this time the connecting protrusions 13 on the brush body 11 can slide out of the connecting groove 14 at the bottom of the connecting frame 10, so that the brush body 11 can be detached from the connecting frame 10, so that the operator can maintain and replace the brush body 11 to ensure the use effect of the sponge blocks 12.

[0035] Finally, it should be noted that the above is only a preferred embodiment of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent replacements to some technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A combined wear bushing assembly for a sewing machine head comprising a bushing body (1) characterized in that: The bushing body (1) is slid through the connection seam sewing machine needle rod (2), and the first connecting block (3) is connected to one side surface of the bottom end of the bushing body (1), the second connecting block (4) is connected to the other side surface of the bottom end of the bushing body (1), one side surface of the two ends of the second connecting block (4) is in contact with the first connecting block (3), the bottom surface of the first connecting block (3) and the second connecting block (4) is symmetrically connected with the connecting frame (10), one side surface of the bottom end of the connecting frame (10) is connected with the brush body (11), the inner side surface of the brush body (11) is connected with the sponge block (12), and the inner side surface of the sponge block (12) is in contact with the outer side surface of the sewing machine needle rod (2).

2. A combined wear sleeve assembly for a sewing machine head according to claim 1, characterized in that: The first connecting block (3) and the second connecting block (4) are connected with the positioning block (5) on one side surface of the bushing body (1), one end of the positioning block (5) is slid into the positioning groove (6), and the positioning groove (6) is symmetrically arranged on the outer side surface of the bottom end of the bushing body (1).

3. A combined wear bushing assembly for a sewing machine head according to claim 1, wherein: The second connecting block (4) is provided with a limiting hole (7) on one side surface of the two ends, a first bolt (8) is connected through the limiting hole (7), a fixing hole (9) is threadedly connected to the other end of the first bolt (8), and the fixing hole (9) is arranged on one side surface of the two ends of the first connecting block (3) facing the second connecting block (4).

4. The combined wear bushing assembly for a sewing machine head according to claim 1, wherein: The sponge block (12) is made of polyester sponge material.

5. A combined wear sleeve assembly for a sewing machine head according to claim 1, characterized in that: The brush body (11) is symmetrically connected with the connecting lug (13) on the outer side surface, one end of the connecting lug (13) extends into the connecting groove (14), the connecting groove (14) is symmetrically arranged on the bottom surface of the connecting frame (10), and the connecting lug (13) is slidably connected with the connecting frame (10) through the connecting groove (14).

6. A combined wear sleeve assembly for a sewing machine head according to claim 5, wherein: The second bolt (15) is connected through the outer side surface of the bottom end of the connecting frame (10), the other end of the second bolt (15) is threadedly connected with the threaded hole (16), and the threaded hole (16) is arranged on the side surface of the connecting lug (13) away from the brush body (11).

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