Installation structure of needle bar

Abstract

The utility model provides a mounting structure of a needle bar, which comprises the needle bar, a guide post and an upper head block formed on the guide post through injection molding, the upper head block comprises a mounting post which is partially coated outside the guide post after injection molding, the guide post comprises a coated part and an extending part which is not coated and extends downwards, and the upper head block is arranged on the guide post. The needle rod is provided with an installation hole matched with the guide column and the installation column, a protruding rib is arranged outside the installation column, and a first ring groove matched with the protruding rib is formed in the matching position of the installation hole and the installation column. The utility model has the advantages of convenient installation, close cooperation and low cost consumption.

Description

Technical Field

[0001] This utility model relates to the technical field of needle bars for embroidery machines, and in particular to a needle bar mounting structure. Background Technology

[0002] There is a needle bar with an injection-molded upper block at the top. The injection-molded upper block is installed in conjunction with the needle bar. The upper block has a mounting post that fits into the mounting hole at the top of the needle bar. It is then positioned and fixed by bolts. The additional bolts not only make the installation more complicated, but also increase the production cost. Utility Model Content

[0003] To address the problems of the prior art, this utility model provides a needle bar mounting structure that is simple to install and low in cost.

[0004] The technical solution adopted is as follows:

[0005] A needle bar mounting structure includes a needle bar, a guide post, and an upper block injection-molded onto the guide post. The upper block includes a mounting post that partially covers the guide post after injection molding. The guide post includes a covered portion and an uncovered, downwardly extending portion. The needle bar has mounting holes that mate with the guide post and the mounting post. The mounting post has a raised rib on its exterior. The inner wall of the mounting hole, where it mates with the mounting post, has a first annular groove that mates with the raised rib.

[0006] Furthermore, a second annular groove is provided on the guide post at the point where it mates with the mounting post.

[0007] Furthermore, the ribs are vertical ribs.

[0008] Furthermore, the rib is an elastic rib.

[0009] Furthermore, the diameter of the protrusion is smaller than the diameter of the mounting hole.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0011] This invention provides a needle bar mounting structure. A guide post is injection-molded into the upper part of the needle bar. Part of the guide post is enclosed by a mounting post on the upper part of the upper part, while another part extends out as a protruding portion. A molded rib is provided on the outer side of the mounting post that mates with the mounting hole at the upper end of the needle bar. A first annular groove is provided at the point where the mounting hole mates with the mounting post. The mounting post is deformed and installed into the mounting hole of the needle bar. The rib and the first annular groove make the connection between the needle bar and the mounting post tighter and less prone to detachment. The diameter of the protruding portion of the guide post is smaller than the diameter of the mounting hole, allowing it to extend into the mounting hole first during installation to provide guidance and facilitate installation. This invention eliminates the need for bolt fixing; the elastic mounting post can be directly inserted into the mounting hole of the needle bar for fixation, making installation convenient and cost-effective. Attached Figure Description

[0012] Figure 1 This is a partial disassembly diagram of the present invention;

[0013] Figure 2 This is a partial disassembly view of the present invention from another angle;

[0014] Figure 3 This is a perspective view of the present invention;

[0015] The components include: needle bar 1, guide post 2, covering part 201, protrusion part 202, upper block 3, mounting post 4, mounting hole 5, rib 6, first annular groove 7, and second annular groove 8. Detailed Implementation

[0016] The present invention will be further described below with reference to specific embodiments.

[0017] refer to Figure 1 , 2 3. A needle bar mounting structure, comprising a needle bar 1, a guide post 2, and an upper block 3 injection-molded onto the guide post 2. The upper block 3 includes a mounting post 4 partially covering the guide post 2 after injection molding. The guide post 2 includes a covered portion 201 and an uncovered, downwardly extending portion 202. The needle bar 1 is provided with mounting holes 5 that mate with the guide post and the mounting post. The mounting post 4 is provided with a raised rib 9 on its exterior. The inner wall of the mounting hole 5, where it mates with the mounting post 4, is provided with a first annular groove 7 that mates with the raised rib.

[0018] The upper block 3 is directly injection molded onto the guide post 2 using a mold, which is convenient and eliminates the need for additional mounting holes on the upper block. Furthermore, injection molding reduces costs. During processing, the guide post 2 is not completely covered; an uncovered protrusion 202 remains. When connecting the upper block 3 and the needle bar 1, the protrusion 202 of the guide post 2 first extends into the mounting hole 5 of the needle bar 1. Since the diameter of the protrusion 202 is smaller than the diameter of the mounting hole 5, it inserts more easily. The covering portion 201 of the guide post 2 is covered by the mounting post 4, which has a raised rib 6. Its overall diameter is slightly larger than the diameter of the mounting hole 5, making installation difficult. Therefore, the protrusion 202 first extends into the mounting hole 5 to provide guidance before the mounting post 4 is pressed down into the mounting hole 5, improving installation efficiency.

[0019] The mounting hole 4 and the mounting post 4 are provided with a first annular groove 7 that mates with the rib. Setting the mounting post 4 eliminates the need for precision machining of its outer circumference to mate with the needle bar. The rib 6 is a vertical rib with elasticity, allowing it to deform. This deformation compresses the mounting post 4 into the mounting hole 5. After entering the mounting hole 5, the rib 6, under the action of elasticity, fits into the first annular groove 7 on the inner wall of the needle bar mounting hole 5, further securing it and preventing the upper block from easily falling off.

[0020] The guide post 2 and the mounting post 4 are provided with a second annular groove 8 at their mating point. Before injection molding, the second annular groove 8 is provided on the guide post 2, and then the mounting post 4 is injection molded onto the guide post 2, so that the mounting post 4 and the guide post 2 fit more tightly and are less likely to fall off.

[0021] This utility model is easy to install, has low processing cost, is not easy to fall off after installation, and the upper block fits tightly with the needle bar.

[0022] The above description is only an optional embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included in the patent protection scope of the present utility model.

Claims

1. A mounting structure of a needle bar, characterized by: The injection needle includes a needle rod (1), a guide column (2) and an upper head block (3) which is injection molded on the guide column (2), the upper head block (3) includes a mounting column (4) which is partially covered outside the guide column (2), the guide column (2) includes a covered part (201) and an extended part (202) which is not covered and extends downward, the needle rod (1) is provided with a mounting hole (5) which cooperates with the guide column and the mounting column, the mounting column (4) is provided with a convex rib (6) outside, and the inner wall of the mounting hole (5) is provided with a first ring groove (7) which cooperates with the convex rib at the cooperation part of the mounting column (4).

2. The needle bar mounting structure according to claim 1, characterized in that: The guide column (2) is provided with a second ring groove (8) at the cooperation part of the mounting column (4).

3. The needle bar mounting structure according to claim 1, wherein: The convex rib (6) is a vertical convex rib.

4. The needle bar mounting structure according to Claim 1, wherein: The convex rib (6) is an elastic convex rib.

5. The needle bar mounting structure according to Claim 1, wherein: The diameter of the extended part (202) is smaller than the diameter of the mounting hole (5).

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