Routing cam with anti-skid effect

Abstract

The utility model discloses a routing cam with an anti-skid effect, which relates to the technical field of sewing machines and comprises a routing shaft. The wire bonding device comprises a wire bonding shaft, a wire bonding wheel is installed at the front end of the wire bonding shaft, the wire bonding shaft is conical, the angle between the wire bonding wheel and the wire bonding shaft is an obtuse angle, an arc-shaped anti-disengaging groove is formed in the upper surface of the front end of the wire bonding wheel, and anti-disengaging patterns are arranged on the surface of the anti-disengaging groove. An anti-disengaging groove is formed in the thread bonding shaft, the corners of the upper end and the lower end of the anti-disengaging groove are rounded corners, a threaded connector is arranged at the rear end of the thread bonding shaft, and the rotating direction of the threaded connector is opposite to the rotating direction of the thread bonding wheel. When the routing wheel rotates, a sewing thread is clamped into the anti-disengaging groove, the anti-disengaging patterns drive the sewing thread to move, the situation that the routing wheel slips and cannot hang the sewing thread is avoided, and the take-up capacity of the routing wheel is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sewing machines, and particularly relates to a thread-taking-up cam with an anti-slip effect. Background Technique

[0002] A sewing machine includes a needle bar mechanism, a thread-taking-up mechanism, a feeding mechanism, etc. It is a machine that stitches sewing materials through sewing threads. The existing thread-taking-up cam structure of a sewing machine installs the thread-taking-up cam on the main shaft, and installs the thread-taking-up frame on the headstock housing. The thread-taking-up cam and the thread-taking-up frame cooperate to complete the thread-taking-up work. The sewing machine cooperates the thread-taking device with the thread-taking-up cam to realize the take-up and pay-out of the sewing thread.

[0003] For example, the patent document with the application number 202322492057.5 discloses a thread-taking-up cam for a sewing machine. The utility model discloses a thread-taking-up cam for a sewing machine, belonging to the technical field of sewing machines. The thread-taking-up cam includes a thread-taking-up shaft, and two thread-taking-up pieces are arranged on the thread-taking-up shaft. An obtuse angle structure is formed between the thread-taking-up piece close to the sewing thread inlet side and the thread-taking-up shaft, which is used to guide the broken sewing thread away from the thread-taking-up piece with the obtuse angle structure. The middle part of the thread-taking-up shaft of the utility model is set as a conical structure, so that the included angle structure formed by the thread-taking-up shaft and the thread-taking-up piece is changed from a right angle to an obtuse angle. Utilizing the centrifugal phenomenon generated by the high-speed rotation of the thread-taking-up cam itself, air flowing from the center to the outside is generated around the thread-taking-up piece. After the sewing thread breaks, the broken thread end has a downward movement trend along the conical line direction of the wire guiding cone section under the action of the air flow, so as to move away from the thread-taking-up piece and be sent to the anti-winding wool strip of the thread-taking-up frame, effectively avoiding the sewing thread from winding around the thread-taking-up shaft. However, when the existing thread-taking-up cam for a sewing machine contacts the sewing thread, if the rotation speed is too fast, the thread-taking-up wheel will slip and cannot take up the thread quickly.

[0004] Therefore, in view of this, in view of the deficiencies of the existing structure, research and improvement are carried out, and a thread-taking-up cam with an anti-slip effect is proposed. Content of the Utility Model

[0005] The purpose of the utility model is to provide a thread-taking-up cam with an anti-slip effect to solve the problems put forward in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A thread-taking-up cam with an anti-slip effect, including a thread-taking-up shaft, a thread-taking-up wheel is installed at the front end of the thread-taking-up shaft, and the thread-taking-up shaft is set as a cone, and the angle between the thread-taking-up wheel and the thread-taking-up shaft is an obtuse angle. An anti-slip groove is opened on the upper surface of the front end of the thread-taking-up wheel, and the shape of the anti-slip groove is set as an arc. An anti-slip pattern is arranged on the surface of the anti-slip groove, and the corners at both ends of the upper and lower sides of the anti-slip groove are both set as rounded corners.

[0007] Preferably, a threaded connector is provided at the rear end of the wire winding shaft, and the helix direction of the threaded connector is opposite to the rotation direction of the wire winding wheel.

[0008] Preferably, a slot is formed on the front surface of the threaded connector, and a limiting groove is formed on the inner wall of the slot.

[0009] Preferably, a plug is inserted into the slot, and a limiting strip is provided on the surface of the plug.

[0010] Preferably, a driving rod is provided at the rear end of the plug, and a threaded groove is formed on the front surface of the driving rod.

[0011] Preferably, a threaded connection sleeve is provided on the surface of the threaded groove, and the driving rod and the threaded connector are fixedly connected by the threaded connection sleeve.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] 1. Through the settings of the wire winding shaft, wire winding wheel, anti - detachment groove and anti - detachment pattern, the anti - detachment groove can catch the sewing thread into its interior when the wire winding wheel rotates, and then the anti - detachment pattern drives the sewing thread to move, avoiding the wire winding wheel from slipping and unable to hold the sewing thread, improving the thread - winding ability of the wire winding wheel. At the same time, the upper and lower ends of the anti - detachment groove are provided with rounded corners, which does not affect the thread - releasing ability of the wire winding wheel.

[0014] 2. Through the settings of the threaded connector, slot, limiting groove, limiting strip, plug, driving rod, threaded groove and threaded connection sleeve, the threaded connection sleeve can connect and fix the threaded connector and the driving rod, and can also quickly disassemble them, facilitating the disassembly of the wire winding shaft and the wire winding wheel for maintenance in the later stage. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic three - dimensional structure diagram of the whole of the present utility model;

[0016] Figure 2 is of the present utility model Figure 1 is an enlarged schematic structure diagram at A in

[0017] Figure 3 is a schematic structure diagram of the driving rod of the present utility model;

[0018] Figure 4 is a schematic structure diagram of the threaded connector of the present utility model.

[0019] In the figure: 1. Thread spool; 2. Thread winding wheel; 201. Anti - detachment groove; 202. Anti - detachment pattern; 3. Threaded connector; 301. Slot; 302. Limit groove; 303. Limit bar; 304. Insert block; 305. Drive rod; 306. Thread groove; 307. Threaded connection sleeve. Detailed implementation mode

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] As Figures 1 - 2 shown, a thread - winding cam with anti - slip effect includes a thread spool 1. A thread winding wheel 2 is installed at the front end of the thread spool 1, and the thread spool 1 is set to be conical. And the angle between the thread winding wheel 2 and the thread spool 1 is an obtuse angle. The advantage of this setting is that by setting the thread spool 1 to be conical, the broken thread can be prevented from winding around the thread spool 1.

[0022] Furthermore, an anti - detachment groove 201 is opened on the upper surface of the front end of the thread winding wheel 2. The shape of the anti - detachment groove 201 is set to be arc - shaped. An anti - detachment pattern 202 is arranged on the surface of the anti - detachment groove 201. And the corners at both the upper and lower ends of the anti - detachment groove 201 are set to be rounded. The advantage of this setting is that through the setting of the anti - detachment groove 201, when the thread winding wheel 2 rotates, the sewing thread can be clamped into the interior of the anti - detachment groove 201, and then the anti - detachment pattern 202 drives the sewing thread to move, preventing the thread winding wheel 2 from slipping and not being able to hold the sewing thread, improving the thread - winding ability of the thread winding wheel 2. At the same time, setting the upper and lower ends of the anti - detachment groove 201 to be rounded does not affect the thread - releasing ability of the thread winding wheel 2.

[0023] As Figures 3 - 4 shown, a threaded connector 3 is arranged at the rear end of the thread spool 1, and the helix direction of the threaded connector 3 is set to be opposite to the rotation direction of the thread winding wheel 2. The advantage of this setting is that through the reverse - threaded connector 3, the threaded connection sleeve 307 can be prevented from loosening.

[0024] Furthermore, a slot 301 is opened on the front - end surface of the threaded connector 3, and a limit groove 302 is opened on the inner wall of the slot 301. An insert block 304 is inserted and installed inside the slot 301, and a limit bar 303 is arranged on the surface of the insert block 304. The advantage of this setting is that through the setting of the insert block 304, the insert block 304 can be inserted into the threaded connector 3 for positioning connection.

[0025] Further, a driving rod 305 is provided at the rear end of the inserting block 304, and a threaded groove 306 is provided on the front end surface of the driving rod 305. A threaded connection sleeve 307 is provided on the surface of the threaded groove 306, and the driving rod 305 is fixedly connected to the threaded connection head 3 through the threaded connection sleeve 307. The advantage of this setting is that through the setting of the threaded connection sleeve 307, the threaded connection head 3 and the driving rod 305 can be connected and fixed, and at the same time, it can be quickly removed, which is convenient for later removal of the wire spool 1 and the wire guiding wheel 2 for maintenance.

[0026] Working principle: When using the wire guiding cam with anti-slip effect, first, after inserting the wire spool 1 with the threaded connection head 3 into the inserting block 304 at the front end of the driving rod 305 for positioning and fixing, then screwing the threaded connection sleeve 307 into the connection part between the driving rod 305 and the threaded connection head 3 through the threaded groove 306 for fixing, and then using the driving rod 305 to drive the wire guiding wheel 2 to rotate. The anti-slip groove 201 opened at the front end of the wire guiding wheel 2 contacts the sewing thread to wind up the sewing thread to prevent the sewing thread from loosening. This is the working principle of the wire guiding cam with anti-slip effect.

Claims

1. A wire-drawing cam with anti-slip effect, comprising a wire-drawing shaft (1), characterized in that, A wire winding wheel (2) is installed at the front end of the wire winding shaft (1). The wire winding shaft (1) is conical, and the angle between the wire winding wheel (2) and the wire winding shaft (1) is an obtuse angle. An anti-detachment groove (201) is formed on the upper surface of the front end of the wire winding wheel (2), and the shape of the anti-detachment groove (201) is arc-shaped. An anti-detachment pattern (202) is provided on the surface of the anti-detachment groove (201), and the corners at both the upper and lower ends of the anti-detachment groove (201) are rounded.

2. The wire threading cam with anti-slip effect according to claim 1, characterized in that, A threaded connection head (3) is provided at the rear end of the wire winding shaft (1), and the rotation direction of the threaded connection head (3) is opposite to the rotation direction of the wire winding wheel (2).

3. The wire threading cam with anti-slip effect according to claim 2, characterized in that, A slot (301) is formed on the front surface of the threaded connection head (3), and a limiting groove (302) is formed on the inner wall of the slot (301).

4. A wire threading cam with anti-slip effect according to claim 3, characterized in that, A plug block (304) is inserted and installed inside the slot (301), and a limiting strip (303) is provided on the surface of the plug block (304).

5. A wire threading cam with anti-slip effect according to claim 4, characterized in that, A driving rod (305) is provided at the rear end of the plug block (304), and a threaded groove (306) is formed on the front surface of the driving rod (305).

6. The wire threading cam with anti-slip effect according to claim 5, characterized in that, A threaded connection sleeve (307) is provided on the surface of the threaded groove (306), and the driving rod (305) and the threaded connection head (3) are fixedly connected through the threaded connection sleeve (307).

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