A positioning and mounting structure for a needle selector

Abstract

This utility model relates to the field of knitting equipment technology, and in particular to a positioning and mounting structure for a needle selector. It includes a needle selector and a mounting platform. One side of the needle selector has a guide groove with a threaded hole inside. The mounting platform has a positioning plane with a positioning hole and a locking hole. A positioning pin is installed in the positioning hole, and the diameter of the positioning pin is equal to or slightly smaller than the width of the guide groove. The needle selector is embedded in the guide groove via the positioning pin. The position is adjusted so that the locking hole corresponds to the threaded hole. A locking bolt passes through the locking hole and locks into the threaded hole, thus positioning the needle selector on the positioning plane of the mounting platform. The mounting platform is easy to manufacture, which helps improve production capacity. The small positioning pin is easy to machine with high precision, and the detachable positioning pin facilitates secondary processing and adjustment, ensuring high positioning accuracy after assembly.

Description

Technical Field

[0001] This utility model relates to the field of knitting equipment technology, and in particular to a positioning and installation structure for a needle selector. Background Technology

[0002] The needle selector is a crucial component of a jacquard loom, acting on the jacquard pieces to achieve pattern variations. Traditionally, the needle selector is mounted on a needle selector holder, which in turn is mounted on the machine. This method requires a significant amount of space. For models using stepper motors for needle pressure adjustment, the stepper motor's placement is crucial, resulting in a low number of yarn feed paths per unit inch. To address this issue, the applicant has proposed an installation structure for an upper-coil jacquard needle selector, described in Chinese Patent Publication No. CN216107466U. This solution involves direct installation via screw holes on the needle selector. However, this solution has the following problems in practical application: the needle selector must be strictly perpendicular to the jacquard pieces during installation, necessitating a directional guide structure. Existing solutions use a long boss on the mounting platform, which engages with the needle selector's guide groove for positioning. However, machining this boss requires a thin, long milling cutter, which has poor strength, leading to high machining difficulty, low efficiency, and difficulty in guaranteeing accuracy. With improvements in high-channel needle selectors, their designs have become thinner and lighter. This necessitates the use of finer milling cutters for machining bosses, further exacerbating the machining difficulties and reducing efficiency. To address these technical challenges, this paper proposes a new design to overcome the shortcomings of existing technologies. Utility Model Content

[0003] To overcome the shortcomings of the existing technology, this utility model provides a positioning and mounting structure for a needle selector that is easy to process and has high precision.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A positioning and mounting structure for a needle selector, comprising: A needle selector, wherein a guide groove is provided on one side of the needle selector and extends along the length direction, and a threaded hole is provided in the guide groove; The mounting platform has a positioning plane with positioning holes and locking holes. A positioning pin is provided in the positioning hole. The positioning pin protrudes from the positioning plane. The distance of the positioning pin protruding from the positioning plane is less than or equal to the depth of the guide groove. The diameter of the positioning pin is equal to or slightly less than the width of the guide groove. The needle selector is embedded in the guide groove by a positioning pin. The position is adjusted so that the locking hole corresponds to the threaded hole. The locking bolt passes through the locking hole and locks the connection with the threaded hole, so that the needle selector is positioned on the positioning plane of the mounting table.

[0005] Furthermore, the outer wall of the locating pin and the wall of the locating hole are in an interference fit.

[0006] Furthermore, multiple positioning holes are provided, and each positioning hole is arranged at intervals along a straight line. Each positioning hole is provided with a positioning pin, and each positioning pin is embedded in a guide groove to guide the needle selector to adjust along a straight line.

[0007] Furthermore, there are several locking holes, and each locking hole and each positioning hole are arranged on the same straight line.

[0008] Furthermore, there are two positioning holes and two locking holes, arranged alternately with one positioning hole and one locking hole.

[0009] Furthermore, the locking hole is a through hole, including a large-diameter section and a small-diameter section. The small-diameter section extends through the positioning plane. The locking bolt includes a screw head and a screw rod. The diameter of the screw head is larger than that of the small-diameter section. The screw rod passes through the small-diameter section and connects to the threaded hole. When the locking bolt is tightened, the screw head abuts against the end of the large-diameter section.

[0010] As can be seen from the above description of this utility model, compared with the prior art, the positioning and mounting structure of the needle selector provided by this utility model has the following advantages: The mounting platform's positioning plane, and the machining of positioning holes and locking holes on that plane, are relatively simple, which helps improve production capacity. The smaller size of the positioning pins facilitates high-precision machining, and the detachable pins allow for easy secondary machining and adjustment, ensuring high positioning accuracy after assembly. The mounting structure of this application is streamlined and compact, providing sufficient installation space for other components on the equipment. Attached Figure Description

[0011] Figure 1 This is a side view of the positioning and mounting mechanism of a needle selector according to the present invention.

[0012] Figure 2 This utility model Figure 1 A partial exploded view.

[0013] Figure 3 This is a top view schematic diagram of the positioning and installation mechanism of a needle selector according to the present invention.

[0014] Figure 4 This utility model Figure 3 A partial exploded view.

[0015] The markings in the diagram correspond to the following: 1. Needle selector; 11. Guide groove; 12. Threaded hole; 2. Mounting platform; 21. Positioning plane; 22. Positioning hole; 23. Locking hole; 231. Large diameter section; 232. Small diameter section; 24. Positioning pin; 25. Locking bolt; 251. Screw head; 252. Screw. Detailed Implementation

[0016] The present invention will be further described below through specific embodiments.

[0017] Reference Figures 1 to 4 As shown, a positioning and mounting structure for a needle selector includes a needle selector 1 and a mounting platform 2.

[0018] The needle selector 1 has a guide groove 11 extending along its length on one side, and a threaded hole 12 inside the guide groove 11. The mounting platform 2 has a positioning plane 21, and a positioning hole 22 and a locking hole 23 are provided on the positioning plane 21. A positioning pin 24 is provided inside the positioning hole 22. The positioning pin 24 protrudes from the positioning plane 21, and the distance by which the positioning pin 24 protrudes from the positioning plane 21 is less than or equal to the groove depth of the guide groove 11. The diameter of the positioning pin 24 is equal to or slightly less than the groove width of the guide groove 11. The outer wall of the positioning pin 24 is in an interference fit with the hole wall of the positioning hole 22. The needle selector 1 is embedded in the guide groove 11 through the positioning pin 24. The position is adjusted so that the locking hole 23 corresponds to the threaded hole 12. The locking bolt 25 passes through the locking hole 23 and locks the connection with the threaded hole 12, so that the needle selector 1 is positioned on the positioning plane 21 of the mounting platform 2.

[0019] Multiple positioning holes 22 are provided, and the positioning holes 22 are arranged at intervals along a straight line. Each positioning hole 22 is provided with a positioning pin 24, and each positioning pin 24 is embedded in the guide groove 11 to guide the needle selector 1 to limit its adjustment along a straight line. Multiple locking holes 23 are provided, and each locking hole 23 is arranged on the same straight line as each positioning hole 22. In the preferred embodiment, two positioning holes 22 and two locking holes 23 are provided, and the positioning holes 22 and locking holes 23 are arranged alternately.

[0020] The locking hole 23 is a through hole, including a large diameter section 231 and a small diameter section 232. The small diameter section 232 passes through the positioning plane 21. The locking bolt 25 includes a screw head 251 and a screw 252. The diameter of the screw head 251 is larger than that of the small diameter section 232. The screw 252 passes through the small diameter section 232 to connect with the threaded hole 12. When the locking bolt 25 is locked, the screw head 251 abuts against the end of the large diameter section 231.

[0021] The mounting platform 2 is machined to create a positioning plane 21, and the machining of positioning holes 22 and locking holes 23 on the positioning plane 21 is relatively simple, which helps to improve production capacity. Multiple positioning pins 24 are installed to guide and position the needle selector 1 in the linear direction. The positioning pins 24 are small and easy to machine with high precision, and the detachable positioning pins 24 are easy to adjust and re-machine, ensuring high positioning accuracy after assembly. The mounting structure of this application is simple and compact, providing sufficient installation space for other components on the equipment.

[0022] The above is only one specific embodiment of the present utility model, but the design concept of the present utility model is not limited thereto. Any non-substantial modifications made to the present utility model using this concept shall be considered as an infringement of the protection scope of the present utility model.

Claims

1. A needle selector positioning mounting structure characterized by comprising: include: A needle selector, wherein a guide groove is provided on one side of the needle selector and extends along the length direction, and a threaded hole is provided in the guide groove; The mounting platform has a positioning plane with positioning holes and locking holes. A positioning pin is provided in the positioning hole. The positioning pin protrudes from the positioning plane. The distance of the positioning pin protruding from the positioning plane is less than or equal to the depth of the guide groove. The diameter of the positioning pin is equal to or slightly less than the width of the guide groove. The needle selector is embedded in the guide groove by a positioning pin. The position is adjusted so that the locking hole corresponds to the threaded hole. The locking bolt passes through the locking hole and locks the connection with the threaded hole, so that the needle selector is positioned on the positioning plane of the mounting table.

2. The positioning mounting structure of a needle selector according to claim 1, wherein: The outer wall of the positioning pin is in an interference fit with the wall of the positioning hole.

3. The positioning mounting structure of a needle selector according to claim 1, wherein: The positioning holes are provided in multiple ways, and each positioning hole is arranged at intervals along a straight line. Each positioning hole is provided with a positioning pin, and each positioning pin is embedded in a guide groove to guide the needle selector to adjust along a straight line.

4. The positioning mounting structure of a needle selector according to claim 3, wherein: The locking holes are provided in a plurality of manner, and each locking hole and each positioning hole are arranged on the same straight line.

5. The positioning mounting structure of a needle selector according to claim 4, wherein: The positioning hole is provided in two places, and the locking hole is provided in two places. The positioning hole and the locking hole are arranged alternately.

6. The positioning mounting structure of a needle selector according to claim 1, wherein: The locking hole is a through hole, including a large-diameter section and a small-diameter section. The small-diameter section extends through the positioning plane. The locking bolt includes a screw head and a screw rod. The diameter of the screw head is larger than that of the small-diameter section. The screw rod passes through the small-diameter section and connects to the threaded hole. When the locking bolt is tightened, the screw head abuts against the end of the large-diameter section.

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