Rotor brake mechanism suitable for automatic joint type rotor spinning machine

Abstract

The invention discloses a rotor brake mechanism suitable for an automatic joint type rotor spinning machine, which comprises a rotor seat, a rotor assembly is mounted in the rotor seat, a rotor shaft part in the rotor assembly is exposed out of the rotor seat, a brake lever hinged with the rotor seat is arranged below the rotor seat, a first mounting groove is formed in the upper surface of one end of the brake lever, and a second mounting groove is formed in the lower surface of the other end of the brake lever. A spring is arranged between the rotor base and the brake lever, a base plate is arranged below one end of the brake lever, a brake base is installed at the other end of the brake lever, and a brake block is installed at the position, corresponding to the rotor shaft, of the brake base. In the invention, the brake lever is driven to rotate through the elastic force of the spring, so that the brake lever immediately rotates after the spinning apparatus is opened, the brake block quickly brakes the rotor shaft, the original manual auxiliary braking is replaced by automatic braking, the impact damage to the rotor bearing is reduced, and the service life of the rotor bearing is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of rotor spinning machines, and more particularly to a rotor brake mechanism suitable for an automatic piecing type rotor spinning machine. Background Art

[0002] When performing piecing or cleaning maintenance on rotor spinning machines, the spinning unit must be opened beforehand. The hook structure on the brake seat is hooked onto the wall panel. The rotor shaft is then quickly braked using the spinning unit's own weight and manual pressure. The remaining fibers and dust in the rotor condensation groove are then manually cleaned. This operation requires the spinning unit to be fully opened to achieve rapid braking of the rotor shaft. This also results in a high incidence of damage to the rotor bearings and brake seat due to the violent opening and closing during the braking process.

[0003] The brake shoe is used to brake the rotor shaft and is a consumable part. The existing replacement steps are cumbersome, and the rotor assembly needs to be removed from the rotor seat before the brake shoe can be replaced. After replacement, the rotor assembly needs to be installed back into the rotor seat and the installation of the rotor assembly needs to be adjusted.

[0004] As the intelligence level of rotor spinning machines continues to improve, the existing brake structure is not enough to meet the function of quickly braking the rotor shaft by slightly opening the spinning unit during automatic yarn piecing. Therefore, a new solution is needed to solve the above problem. Summary of the Invention

[0005] The object of the present invention is to overcome the above-mentioned deficiencies in the prior art and to provide a rotor brake mechanism suitable for an automatic piecing type rotor spinning machine.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] The brake block is installed on the brake seat corresponding to the position of the rotor shaft, and the brake block disengages from the abutment plate when one end of the brake lever abuts the pad, and the brake block abuts against the rotating rotor shaft when one end of the brake lever disengages from the abutment plate, thereby braking the rotor shaft.

[0008] Furthermore, the brake lever has a Z-shaped structure, and the height of one end of the brake lever is lower than the height of the other end.

[0009] Furthermore, the length of one end of the brake lever is longer than the length of the other end thereof.

[0010] Furthermore, a limiting groove is provided on the upper surface of the other end of the brake lever, and a limiting block is provided at the position of the brake seat corresponding to the limiting groove. The brake seat is installed at the other end of the brake lever by plugging the limiting block and the limiting groove.

[0011] Furthermore, a through hole is provided at the bottom of the limiting groove, the through hole is communicated with the limiting groove, a self-tapping bolt is provided in the through hole, and the self-tapping bolt passes through the limiting groove and is threadedly connected to the limiting block.

[0012] Furthermore, a lower convex portion is provided on the lower surface of one end of the brake lever, and the lower convex portion has an inclined surface for abutting against the contact pad, and the angle α between the inclined surface and the lower surface of the rotary cup seat is 150°.

[0013] Furthermore, a backing plate insert is embedded at the abutment portion between the backing plate and the brake lever.

[0014] Furthermore, the upper surface of the brake shoe is a curved surface adapted to the rotor shaft.

[0015] The beneficial effects of the present invention are:

[0016] 1. In the present invention, the brake seat is fixed to the brake lever by self-tapping bolts, so that the brake seat can be easily replaced, solving the problem of complicated replacement steps after the brake seat is broken due to improper operation; at the same time, the brake seat can be accurately installed by plugging and matching the limit groove and the limit block.

[0017] 2. In this invention, the brake lever is driven by spring force, rotating immediately after the spinning unit is opened, allowing the brake pad to quickly brake the rotor shaft. This replaces the traditional manual auxiliary braking with automatic braking, reducing impact damage to the rotor bearing and extending the service life of the rotor bearing. Furthermore, the brake pad is externally located outside the rotor base, making it easy to replace the brake pad.

[0018] 3. In the present invention, by arranging the brake lever in a Z-shape, the brake shoe at the other end of the brake lever is closer to the rotor shaft. This allows the brake shoe to abut the rotor shaft even with a slight rotation of the brake lever, frictionally braking the rotor shaft and achieving rapid braking even when the spinning unit is slightly opened. Furthermore, by making one end of the brake lever longer than the other, the small spring force can be converted into a large braking force, ensuring effective braking of the rotor shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Schematic diagram of a structure of a rotor brake mechanism applicable to an automatic piecing type rotor spinning machine in this embodiment;

[0020] Figure 2 Schematic diagram of an exploded structure of a rotor brake mechanism applicable to an automatic piecing type rotor spinning machine in this embodiment;

[0021] Figure 3 This is a schematic diagram of a connection structure between the brake lever and the rotary cup holder in this embodiment;

[0022] Figure 4 Schematic diagram of a rotor brake mechanism applicable to an automatic piecing rotor spinning machine in this embodiment.

[0023] Figure numerals: rotor seat 1, second mounting groove 101, rotor assembly 2, rotor shaft 201, brake lever 3, first mounting groove 301, limit groove 302, through hole 303, lower protrusion 304, inclined surface 305, spring 4, pad 5, pad insert 501, brake seat 6, limit block 601, brake block 7, self-tapping bolt 8, rotor seat pin shaft 9, spinning box 10, spinning box mounting shaft 11, brake rotating pin 12, transmission belt 13. DETAILED DESCRIPTION

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] Embodiment: A rotor brake mechanism suitable for an automatic piecing rotor spinning machine, such as Figures 1-4 As shown, it includes a rotor seat 1, which is mounted on a spinning box 10 through a rotor seat pin 9 and has a 90° rotational freedom. The spinning box mounting shaft 11 is mounted on the main beam (not shown). The spinning box 10 is mounted on the spinning box mounting shaft 11 and has a 90° rotational freedom. A rotor assembly 2 is installed in the rotor seat 1, and a rotor shaft 201 in the rotor assembly 2 is partially exposed from the rotor seat 1. A brake lever 3 hinged to the rotor seat 1 is provided below the rotor seat 1, that is, the brake lever 3 is mounted on the rotor seat 1 through a brake rotating pin 12, and the brake lever 3 can rotate with the brake rotating pin 12 as the axis.

[0026] Furthermore, a first mounting groove 301 is defined on the upper surface of one end of the brake lever 3, and a second mounting groove 101 is defined on the rotary cup holder 1 at a position corresponding to the first mounting groove 301. A spring 4 is disposed between the rotary cup holder 1 and the brake lever 3. One end of the spring 4 is located within the first mounting groove 301 and connected to the bottom of the first mounting groove 301, while the other end of the spring 4 is located within the second mounting groove 101 and connected to the bottom of the second mounting groove 101. By providing the first mounting groove 301 and the second mounting groove 101 for mounting the spring 4 on one end of the brake lever 3 and the rotary cup holder 1, the expansion and contraction of the spring 4 drives the brake lever 3 to rotate about the brake rotating pin 12, thereby causing the brake shoe 7 mounted on the other end of the brake lever 3 to frictionally brake the rotating rotary cup shaft 201.

[0027] Furthermore, a pad 5 is provided below one end of the brake lever 3; by providing the pad 5, on the one hand, the rotation stroke of the brake lever 3 can be limited, and on the other hand, the brake block 7 at the other end of the brake lever 3 is disengaged from the rotor shaft 201 by contacting the pad 5 with one end of the brake lever 3, thereby preventing the brake block 7 from interfering with the rotor shaft 201 when the rotor shaft 201 rotates.

[0028] Furthermore, a brake seat 6 is installed at the other end of the brake lever 3 , and a brake block 7 is installed at the position of the brake seat 6 corresponding to the rotor shaft 201 . The brake block 7 is used to abut against the rotor shaft 201 to brake the rotor shaft 201 .

[0029] like Figure 4 As shown, when the rotor spinning machine is spinning, the spinning device 10 is closed, and the rotor shaft 201 rotates at high speed under the action of the transmission belt 13, and drives the rotor to rotate through the rotor shaft 201. At this time, since one end of the brake lever 3 abuts the contact pad 5, one end of the brake lever 3 rotates upward with the brake rotating pin 12 as the axis, and the other end of the brake lever 3 rotates downward with the brake rotating pin 12 as the axis, so that the brake block 7 is away from the rotor shaft 201, avoiding the brake block 7 from interfering with the rotation of the rotor shaft 201.

[0030] When the yarn breaks and needs to be spliced, the spinning device 10 is opened, and the rotor shaft 201 continues to rotate at high speed due to inertia after disengaging from the transmission belt 13. At this time, since one end of the brake lever 3 is disengaged from the abutment plate 5, one end of the brake lever 3 rotates downward with the brake rotating pin 12 as the axis, and the other end of the brake lever 3 rotates upward with the brake rotating pin 12 as the axis, so that the brake block 7 abuts against the rotor shaft 201, frictionally braking the rotating rotor shaft 201.

[0031] It should be noted that when the spring 4 is installed in the installation groove formed by the combination of the first installation groove 301 and the second installation groove 101, the brake lever 3 is tilted due to the presence of the spring 4, that is, one end of the brake lever 3 hangs down, and the other end of the brake lever 3 is lifted up. At this time, the brake block 7 abuts against the rotor shaft 201 due to the upward lifting of the other end of the brake lever 3. At the same time, due to the elastic force of the spring 4, the brake block 7 continues to apply force to the rotor shaft 201 and continues to abut against the rotor shaft 201.

[0032] By providing a spring 4 and utilizing its elastic force to drive the brake lever 3 to rotate, the brake lever 3 rotates immediately after the spinning unit 10 is opened, thereby enabling the brake shoe 7 to quickly brake the rotor shaft 201. This braking method eliminates the need for manual additional pressure and replaces the original manual auxiliary braking with automatic braking, thereby reducing impact damage to the rotor shaft 201 bearing and extending the service life of the rotor shaft 201 bearing. Furthermore, the brake shoe 7 is externally located outside the rotor base 1, making it easy to replace the brake shoe 7.

[0033] Preferably, the brake shoe 7 is made of rubber, and the upper surface of the brake shoe 7 is a curved surface that matches the rotor shaft 201. By setting the upper surface of the brake shoe 7 to be a curved surface, the contact surface with the rotor shaft 201 is increased, thereby improving the braking effect.

[0034] Further, such as Figure 2 As shown, a limit slot 302 is defined on the upper surface of the other end of the brake lever 3, and a limit block 601 is provided on the brake seat 6 at a position corresponding to the limit slot 302. The limit block 601 is adapted to the limit slot 302. The provision of the limit slot 302 and the limit block 601 allows, on the one hand, the brake seat 6 to be quickly installed on the brake lever 3 through the plug-in fit between the limit block 601 and the limit slot 302. On the other hand, the plug-in fit between the limit slot 302 and the limit block 601 ensures accurate installation of the brake seat 6, thereby ensuring the braking effect of the brake block 7 on the rotor shaft 201.

[0035] Preferably, a through hole 303 is provided at the bottom of the limiting groove 302, and the through hole 303 is connected to the limiting groove 302. A self-tapping bolt 8 is provided in the through hole 303. The self-tapping bolt 8 passes through the limiting groove 302 and is threadedly connected to the limiting block 601 to fix the brake seat 6 and the brake lever 3, thereby improving the stability of the connection between the brake seat 6 and the brake lever 3, thereby ensuring the braking effect of the brake block 7 on the rotor shaft 201.

[0036] Furthermore, the brake lever 3 has a Z-shaped structure, with the two ends of the brake lever 3 not in the same plane, i.e., one end of the brake lever 3 is lower than the other end. This structure allows the brake shoe 7 at the other end of the brake lever 3 to be closer to the rotor shaft 201, so that the brake shoe 7 can abut against the rotor shaft 201 even with a slight rotation of the brake lever 3, thereby braking the rotor shaft 201. This allows for rapid braking even when the spinning unit 10 is slightly opened, making it suitable for automatic piecing rotor spinning machines.

[0037] Furthermore, one end of the brake lever 3 is longer than the other end, that is, the brake rotating pin 12 is not located at the center of the brake lever 3. By adopting the above structure, the small elastic force of the spring 4 can be converted into a large braking force, thereby ensuring the braking of the rotor shaft 201, and the existing spring 4 does not need to be modified and can be directly used.

[0038] Further, such as Figure 3 As shown, the lower surface of one end of the brake lever 3 is provided with a lower protrusion 304. The lower protrusion 304 has an inclined surface 305 for abutting the contact pad 5. The angle α between the inclined surface 305 and the lower surface of the rotor base 1 is 150°. This structure not only limits the travel of the brake lever 3, but also ensures that the brake shoe 7 applies uniform force to the rotor shaft 201, reducing impact damage to the rotor shaft 201.

[0039] Further, such as Figure 4 As shown, the pad 5 is made of plastic and is easily worn by the brake lever 3 during the frequent opening and closing of the spinning box 10. Therefore, a pad insert 501 made of rigid material is embedded at the abutment between the pad 5 and the brake lever 3 to improve the stability of the structure and increase the service life of the pad 5.

[0040] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, various improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A rotor brake mechanism suitable for an automatic piecing rotor spinning machine, comprising a rotor base (1), wherein a rotor assembly (2) is installed in the rotor base (1), characterized in that: The cup shaft (201) in the cup assembly (2) is partially exposed from the cup base (1), and a brake lever (3) hinged to the cup base (1) is provided below the cup base (1), and a first mounting groove (301) is provided on the upper surface of one end of the brake lever (3), and a second mounting groove (101) is provided on the cup base (1) at a position corresponding to the first mounting groove (301). A spring (4) is provided between the cup base (1) and the brake lever (3), and one end of the spring (4) is located in the first mounting groove (301) and is connected to the bottom of the first mounting groove (301), and the other end of the spring (4) is located in the first mounting groove (301) and is connected to the bottom of the first mounting groove (301). One end is located in the second mounting groove (101) and is connected to the bottom of the second mounting groove (101); a pad (5) is provided below one end of the brake lever (3); a brake seat (6) is installed at the other end of the brake lever (3); a brake block (7) is installed at the position of the brake seat (6) corresponding to the rotating cup shaft (201); the brake block (7) is separated from the rotating cup shaft (201) when one end of the brake lever (3) abuts the pad (5); the brake block (7) abuts the rotating cup shaft (201) when one end of the brake lever (3) abuts the pad (5), and frictionally brakes the rotating cup shaft (201).

2. A rotor brake mechanism for an automatic piecing rotor spinning machine according to claim 1, characterized in that: The brake lever (3) has a Z-shaped structure, and the height of one end of the brake lever (3) is lower than the height of the other end thereof.

3. The rotor brake mechanism for an automatic piecing rotor spinning machine according to claim 1, characterized in that: The length of one end of the brake lever (3) is longer than the length of the other end thereof.

4. The rotor brake mechanism for an automatic piecing rotor spinning machine according to claim 1, characterized in that: A limiting groove (302) is provided on the upper surface of the other end of the brake lever (3), and a limiting block (601) is provided on the brake seat (6) corresponding to the limiting groove (302). The brake seat (6) is installed on the other end of the brake lever (3) by plugging and fitting the limiting block (601) and the limiting groove (302).

5. The rotor brake mechanism for an automatic piecing rotor spinning machine according to claim 4, characterized in that: A through hole (303) is provided at the bottom of the limiting groove (302), the through hole (303) is connected to the limiting groove (302), a self-tapping bolt (8) is provided in the through hole (303), and the self-tapping bolt (8) passes through the limiting groove (302) and is threadedly connected to the limiting block (601).

6. The rotor brake mechanism for an automatic piecing rotor spinning machine according to claim 1, characterized in that: A lower convex portion (304) is provided on the lower surface of one end of the brake lever (3), and the lower convex portion (304) has an inclined surface (305) for abutting against the contact pad (5), and an angle α between the inclined surface (305) and the lower surface of the rotating cup seat (1) is 150°.

7. The rotor brake mechanism for an automatic piecing rotor spinning machine according to claim 1, characterized in that: A backing plate insert (501) is embedded at the abutment portion between the backing plate (5) and the brake lever (3).

8. The rotor brake mechanism for an automatic piecing rotor spinning machine according to claim 1, characterized in that: The upper surface of the brake block (7) is a curved surface adapted to the rotor shaft (201).

Images