A fixed and pressure-regulating separated spring presser cradle

Abstract

The application discloses a spring pressurizing cradle with fixed and separated pressure adjustment, which comprises a cradle body, a spring pressurizing combination installed in the cradle body, a handle arranged above the pressurizing combination, a cradle seat arranged on the side of the handle and the cradle body, two locking pieces arranged in the cradle seat, through holes respectively arranged on the ends of the cradle seat and the locking pieces away from the pressurizing combination, a cradle shaft penetrating the through holes on the locking pieces and the cradle seat and riveted on the two ends of the cradle seat, a connecting rod arranged between the two locking pieces, through holes respectively arranged on the connecting rod and the locking pieces, a locking piece rivet pin penetrating the through holes on the connecting rod and the locking pieces and riveted on the two locking pieces, an eccentric pin penetrating the cradle seat and the connecting rod, and concentric circles on the two ends of the eccentric pin, which are in contact with the cradle seat, and an eccentric circle on the middle section of the eccentric pin, which is in contact with the connecting rod.

Description

Technical Field

[0001] This invention relates to the field of cradle equipment technology, and more specifically to a spring-loaded cradle with separate fixing and pressure adjustment. Background Technology

[0002] In the ring spinning industry, drafting and pressurizing cradles mainly employ three pressurization methods: springs (coil springs), leaf springs, and compressed gas. Springs are the most favored and widely used due to their stable pressurization and lack of additional energy consumption. However, most spring-pressurized cradles currently lack separation between fixing and pressure adjustment (working height adjustment). This means the screws fixing the cradle also serve to adjust the working height (pressure) or need to be loosened for adjustment. After a period of operation, specifically approximately 3 to 5 months, the cradle may loosen, causing a rapid decrease in pressurization pressure. If this is not detected and adjusted promptly, it will severely impact spinning quality. Adjusting the cradle every 3 to 5 months requires significant manpower, which is extremely disadvantageous for cotton spinning enterprises facing labor shortages. Summary of the Invention

[0003] To address the aforementioned problems, this invention proposes a spring-loaded rocker arm with separate fixing and pressure adjustment mechanisms. The rocker arm includes a rocker arm body, a spring-loaded coupling mounted within the rocker arm body, a handle positioned above the coupling, and a rocker arm seat positioned to the side of the handle and the rocker arm body. Two hook-shaped locking plates are located within the rocker arm seat. Through holes are correspondingly formed at the ends of the rocker arm seat and locking plates away from the coupling. A rocker arm shaft passes through the through holes in the locking plates and the rocker arm seat, and is riveted to both ends of the rocker arm seat. A connecting rod is positioned between the two locking plates, and through holes are correspondingly formed on the connecting rod and locking plates. A locking plate rivet passes through the through holes in the connecting rod and the locking plates and is riveted to the two locking plates. An eccentric pin passes through the rocker arm seat and the connecting rod. The two ends of the eccentric pin are concentric circles, contacting the rocker arm seat, while the middle section is an eccentric circle, contacting the connecting rod. An internal threaded hole is formed at one end of the eccentric pin, and a washer screw is connected to the eccentric pin through the internal threaded hole.

[0004] Furthermore, the handle and the rocker body are riveted together by a handle pivot pin.

[0005] Furthermore, a roller pin is riveted to the lower part of the handle near the locking plate, and a roller is installed on the outer side of the roller pin. The lower part of the locking plate near the handle has a groove that matches the roller. When in the pressurized locking state, the roller is in the groove position of the locking plate.

[0006] Furthermore, a positioning pin is installed at the end of the handle away from the pressure coupling, and an arc groove adapted to the positioning pin is opened at the upper left end of the locking plate. When in the lifted state, the positioning pin is in the position of the arc groove.

[0007] Furthermore, a fixing plate is provided at the lower end of the cradle seat. Both the fixing plate and the cradle seat have irregular holes, and T-slots are provided on the irregular holes of both the fixing plate and the cradle seat.

[0008] Furthermore, the number of fixed pieces is an even number.

[0009] Furthermore, a stepped block is provided that passes through a fixing plate, and the two ends of the stepped block are riveted to the fixing plates at the top and bottom ends.

[0010] Furthermore, rectangular holes are provided on the step block and the fixing plate, and a block nut is provided to pass through the rectangular holes on the rocker arm base and the fixing plate. The size of the rectangular hole on the fixing plate is larger than the size of the block nut. The two ends of the block nut are riveted to the rocker arm base. A fixing screw is provided to pass through the step block and be threadedly connected to the block nut. The fixing screw is rotatably connected to the step block.

[0011] The beneficial effects of this invention are as follows: by tightening the cradle fixing screws, the cradle can be fixed with one click; during the adjustment of the cradle's working height, only the eccentric pin needs to be rotated, without loosening the fixing screws, thus achieving separation of fixing and pressure adjustment; the cradle will not loosen during long-term operation or when it is lifted or pressed down (rotating around the support rod axis), the working pressure is stable, and the installation and adjustment efficiency of the cradle is improved, greatly reducing the workload of irregular adjustment of the cradle's working height (pressure) and saving labor costs. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the working state of the present invention;

[0013] Figure 2 for Figure 1 FF section view;

[0014] Figure 3 This is a schematic diagram of the depressurization state of the present invention;

[0015] Figure 4 This is a schematic diagram of the lifting and positioning state of the present invention;

[0016] Figure 5 This is a drawing of the locking plate connecting rod assembly.

[0017] Figure 6 Drawing of the support shaft part;

[0018] Figure 7 Drawing of the fixing plate part;

[0019] Figure 8 Drawings of the cradle body parts;

[0020] Figure 9 Drawing of the handle parts;

[0021] Figure 10 This is a drawing of an eccentric pin part.

[0022] The reference numerals in the attached drawings are explained as follows: 1. Handle; 2. Cradle body; 3. Roller; 4. Roller pin; 5. Handle pivot pin; 6. Positioning pin; 7. Locking plate; 8. Cradle shaft; 9. Limiting bracket; 10. Locking plate rivet; 11. Washer screw; 12. Connecting rod; 13. Cradle seat; 14. Eccentric pin; 15. Fixing plate; 16. Step block; 17. Block nut; 18. Fixing screw; 19. Support shaft; 20. Lower roller; 21. Upper roller; 23. Pressure coupling. Detailed Implementation

[0023] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0025] The present invention will be further described below with reference to the accompanying drawings:

[0026] For ease of explanation, the following components are introduced: handle assembly, including handle 1, roller 3, roller pin 4, and positioning pin 6; locking plate 7 and connecting rod 12 assembly, including locking plate 7, limiting bracket 9 (limiting bracket 9 is fixed on the outside of locking plate 7, and the limiting bracket 9 is locked inside the cradle seat 13 to ensure that the locking plate 7 and connecting rod 12 assembly is centered; the limiting bracket 9 is a plastic part, and when installed in the cradle seat 13, it has a slight interference fit with the inner opening of the cradle seat 13 to facilitate the assembly of the cradle shaft 8 and eccentric pin 14), locking plate rivet 10, and connecting rod 12; fixing plate 15 assembly, including fixing plate 15 and stepped block 16; among them, the upper roller 21, lower roller 20, and support rod shaft 19 are not part of the cradle, but are parts of the main unit other than the cradle.

[0027] A spring-loaded rocker arm with separate fixing and pressure adjustment features includes an upper roller 21 and a lower roller 20. A rocker arm body 2 is positioned above the upper roller 21, and a spring-loaded coupling 23 is installed inside the rocker arm body 2. A handle 1 is positioned above the pressure coupling 23, and a rocker arm seat 13 is positioned to the side of the handle 1 and the rocker arm body 2. The rocker arm seat 13 is characterized by having two locking plates 7, which are hook-shaped. Both the rocker arm seat 13 and the locking plates 7 have corresponding through holes at their ends away from the pressure coupling 23, through which a rocker arm shaft 8 passes. A through hole is riveted to both ends of the rocker arm base 13. A connecting rod 12 is provided between the two locking plates 7. Both the connecting rod 12 and the locking plates 7 have corresponding through holes. A locking plate rivet 10 is provided, which passes through the through holes of the connecting rod 12 and the locking plates 7 and is riveted to the two locking plates 7. An eccentric pin 14 is provided, which passes through the rocker arm base 13 and the connecting rod 12. The two ends of the eccentric pin 14 are concentric circles that contact the rocker arm base 13, and the middle section is an eccentric circle that contacts the connecting rod 12. One end of the eccentric pin 14 has an internal thread hole, and a washer screw 11 is provided, which is connected to the eccentric pin 14 through the internal thread hole.

[0028] In this embodiment, the handle 1 and the rocker body 2 are riveted together by a handle pivot pin 5; a roller pin 4 is riveted to the lower part of the handle 1 near the locking plate 7, and a roller 3 is installed on the outer side of the roller pin 4; a groove adapted to the roller 3 is opened on the lower part of the locking plate 7 near the handle 1, and the roller 3 is in the groove position of the locking plate 7 when it is in the pressurized locking state; a positioning pin 6 is installed on the end of the handle 1 away from the pressurized connecting part 23, and an arc groove adapted to the positioning pin 6 is opened on the upper left end of the locking plate 7, and the positioning pin 6 is in the arc groove position when it is in the lifted state.

[0029] In this embodiment, a fixing member support shaft 19 is provided. Both ends of the support shaft 19 are fixed to the main frame by screws. A T-shaped protrusion is provided on the outer side of the support shaft 19. A fixing piece 15 is provided in the lower end of the rocker seat 13. The number of fixing pieces 15 is even. Both the fixing piece 15 and the rocker seat 13 are provided with irregular holes through which the support shaft 19 can pass. The irregular holes have T-shaped grooves that are adapted to the T-shaped protrusion.

[0030] In this embodiment, a stepped block 16 is provided to pass through a fixing plate 15, and the two ends of the stepped block 16 are riveted to the fixing plates 15 at the upper and lower ends; rectangular holes are provided on the stepped block 16 and the fixing plate 15, and a block nut 17 is provided to pass through the rectangular holes on the rocker arm base 13 and the fixing plate 15. The size of the rectangular hole on the fixing plate 15 is larger than the size of the block nut 17. The two ends of the block nut 17 are riveted to the rocker arm base 13. A fixing screw 18 is provided to pass through the stepped block 16 and is threadedly connected to the block nut 17. The fixing screw 18 is rotatably connected to the stepped block 16.

[0031] The following description, with reference to the accompanying diagrams, explains the operation and principles of the cradle in each state:

[0032] I. Fixing the Cradle

[0033] like Figure 1 and Figure 7 As shown, two or more (even numbers) fixing plates 15 are symmetrically riveted together by stepped blocks 16. The irregularly shaped holes with T-slots on the fixing plates 15 are similar to but slightly larger than the T-shaped protrusions on the cross-section of the support shaft 19, meaning the support shaft 19 can pass through the irregularly shaped holes on the fixing plates 15. Similarly, the irregularly shaped holes with T-slots on the rocker arm seat 13 are similar to but slightly larger than the T-shaped protrusions on the cross-section of the support shaft 19, allowing the support shaft 19 to also pass through the irregularly shaped holes on the rocker arm seat 13. The fixing plate 15 assembly is then assembled... Figure 1 As shown, the square nut 17 is placed in the middle of the cradle base 13, and passes through the rectangular hole on the cradle base 13 and the fixing plate 15. Both ends are riveted to the cradle base 13. When installing the rocker arm, the support shaft 19 passes through the irregular holes on the rocker arm seat 13 and the fixing plate 15 simultaneously. Then, tighten the fixing screw 18 at the appropriate axial position. The fixing plate 15 and the rocker arm seat 13 will rotate clockwise or counterclockwise around the support shaft 19. When the T-shaped groove on the rocker arm seat 13 or the fixing plate 15 contacts the T-shaped protrusion of the support shaft 19, the rocker arm seat 13 or the fixing plate 15 will stop rotating due to the limit of the support shaft 19. The rocker arm seat 13 or the fixing plate 15 that has not yet contacted the T-shaped protrusion of the support shaft 19 will continue to rotate around the support shaft 19. When the fixing screw 18 is tightened to a certain position, the T-shaped groove on the rocker arm seat 13 and the fixing plate 15 will be misaligned and locked in the T-shaped protrusion of the support shaft 19, completing the one-click fixing of the rocker arm.

[0034] II. Pressurization, locking, unlocking, and working height (pressure) adjustment of the cradle

[0035] Locking plate 7-link 12 assembly (see details) Figure 5 An eccentric pin 14 passes through a round hole on the connecting rod 12 and is installed in the middle of the rocker arm seat 13. The eccentric pin 14 can rotate within the round holes on the rocker arm seat 13 and the connecting rod 12. After rotating to the appropriate position, the washer screw 11 at one end of the eccentric pin 14 can be tightened and locked onto the rocker arm seat 13. See the handle assembly for details. Figure 9 The handle is mounted in the middle of the rocker body 2 via the handle pivot pin 5, allowing it to rotate within a certain angle range. The handle pivot pin 5 and the rocker body 2 are riveted together to prevent them from coming loose. A new assembly, formed by riveting the handle assembly and the rocker body 2 together via the handle pivot pin 5, is then inserted into the middle of the rocker seat 13 and connected via the rocker shaft 8. The rocker shaft 8 also passes through the hole in the locking plate 7. The rocker shaft 8 and the rocker seat 13 are riveted together to prevent them from coming loose. At this point, the rocker body 2 can rotate within a certain angle range around the rocker shaft 8, and the locking plate 7 and connecting rod 12 assembly can also rotate within a certain angle range around the rocker shaft 8.

[0036] Cradle pressure locking: such as Figure 3In the current state, pressing down the handle coupling will cause it to rotate counterclockwise around the handle pivot 5. When roller 3 contacts the locking plate 7, the continued counterclockwise rotation will generate a large pulling force, which is transmitted to the rocker body 2 through the handle pivot 5. The rocker body 2 will then rotate counterclockwise around the rocker shaft 8, compressing the springs on the three sets of pressure couplings 23. Continuing to rotate the handle coupling, when the lower left end of the handle 1 contacts the back of the rocker body 2, roller 3 on the roller pin 4 rotates to the corresponding groove position of the locking plate 7, completing the locking. At this point, without external force lifting the handle 1, the rocker is in a neutral position. Figure 1 In the pressurized locking state, due to the compression of the spring on the pressurized coupling 23, the pressure will be stably transmitted to the lower roller 20 through the upper roller 21, ensuring that the yarn between the upper roller 21 and the lower roller 20 is stably compressed.

[0037] Cradle depressurization and unlocking: such as Figure 1 In the current state, lifting the handle coupling will cause it to rotate clockwise around the handle pivot 5 until the roller 3 disengages from the groove of the locking piece 7. Figure 3 The rocker arm is depressurized and unlocked. At this time, the spring on the pressure coupling 23 extends, and the pressure exerted by the upper roller 21 on the lower roller 20 is only part of the weight of the pressure coupling 23 and the rocker arm body 2 and other components.

[0038] Cradle working height adjustment: Due to machining accuracy errors in the support shaft 19 and related parts of the cradle, such as the cradle seat 13 and the cradle body 2, the cradle's working height may vary. Figure 1 When locked, the gap H between the lower edge of the front end of the cradle body 2 and the top of the lower roller 20 may not be consistent. Therefore, the compression of the spring on the cradle pressure coupling 23 is also inconsistent, resulting in inconsistent pressure of the upper roller 21 on the lower roller 20. The inconsistent pressure causes poor spinning quality or even makes spinning impossible. To ensure that the height H of all rocker arms is consistent during locking, an eccentric pin 14 is provided as an adjustment mechanism. The two ends of the eccentric pin 14 are concentric circles. It is mounted on the rocker arm seat 13, and the circle that contacts the connecting rod 12 is the eccentric circle. Rotating the eccentric pin 14 will drive the locking plate 7 and connecting rod 12 to rotate counterclockwise or clockwise around the rocker arm shaft 8. At the same time, the roller 3 on the groove at the left end of the locking plate 7 will drive the rocker arm body 2, handle assembly, etc. to rotate counterclockwise or clockwise around the rocker arm shaft 8. When the rotation reaches a certain position, that is, when the above-mentioned H value is consistent with the height gauge required by the design, the rotation is stopped, and the washer screw 11 at the other end of the eccentric pin 14 is tightened, so that the washer screw 11, the eccentric pin 14 and the rocker arm seat 13 are locked together. This completes the adjustment of the working height of the rocker arm. Theoretically, the pressure of the upper roller 21 on the lower roller 20 of the rocker arm is consistent.

[0039] III. Cradle Lifting and Positioning

[0040] exist Figure 3In the current state, lift handle 1 and rotate it clockwise around the rocker arm shaft 8. When the right end of the rocker arm body 2 contacts the upper end of the rocker arm seat 13, the rocker arm body 2 stops rotating. Continue to rotate the handle assembly. When handle 1 contacts the inner side of the rocker arm body 2, handle 1 stops rotating. At this time, the positioning pin 6 is supported in the arc groove position corresponding to the locking piece 7, and the rocker arm is in the lifted positioning state. Since the upward extension line of the line connecting the support point and the center of the positioning pin 6 falls on the left side of the handle pivot pin 5, the rocker arm will not rotate without external force, which facilitates the installation and removal of the upper roller 21 and the cleaning and maintenance of the lower roller 20.

[0041] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A spring-loaded rocker arm with separate fixing and pressure adjustment, comprising a rocker arm body (2), a spring-loaded coupling (23) installed inside the rocker arm body (2), a handle (1) disposed above the pressure coupling (23), and a rocker arm seat (13) disposed on the side of the handle (1) and the rocker arm body (2); characterized in that: Two locking plates (7) are provided inside the cradle base (13). The locking plates (7) are hook-shaped. Both the cradle base (13) and the locking plates (7) have corresponding through holes at the ends away from the pressure coupling (23). A cradle shaft (8) is provided, which passes through the through holes on the locking plates (7) and the cradle base (13) and is riveted to both ends of the cradle base (13). A connecting rod (12) is provided between the two locking plates (7). Both the connecting rod (12) and the locking plates (7) have corresponding through holes. A locking pin (10) is provided, which passes through the through hole of the connecting rod (12) and the locking plate (7) and is riveted to the two locking plates (7); an eccentric pin (14) is provided, which passes through the rocker seat (13) and the connecting rod (12). The two ends of the eccentric pin (14) are concentric circles and contact the rocker seat (13), while the middle section is an eccentric circle and contacts the connecting rod (12). One end of the eccentric pin (14) is provided with an internal thread hole, and a washer screw (11) is provided to connect to the eccentric pin (14) through the internal thread hole.

2. The spring-loaded rocker arm with fixed and adjustable functions according to claim 1, characterized in that: The handle (1) and the rocker body (2) are riveted together by a handle pivot pin (5).

3. A spring-loaded rocker arm with separate fixing and pressure adjustment according to claim 2, characterized in that: A roller pin (4) is riveted to the lower part of the handle (1) near the locking plate (7). A roller (3) is installed on the outer side of the roller pin (4). A groove that matches the roller (3) is opened on the lower part of the locking plate (7) near the handle (1). When in the pressure locking state, the roller (3) is in the groove position of the locking plate (7).

4. A spring-loaded rocker arm with separate fixing and pressure adjustment according to claim 3, characterized in that: A positioning pin (6) is installed at the end of the handle (1) away from the pressure coupling (23). The upper left end of the locking piece (7) has an arc groove that matches the positioning pin (6). When it is in the lifted state, the positioning pin (6) is in the arc groove position.

5. A spring-loaded rocker arm with separate fixing and pressure adjustment according to claim 1, characterized in that: A fixing plate (15) is provided at the lower end of the cradle seat (13). Both the fixing plate (15) and the cradle seat (13) have irregular holes, and both the fixing plate (15) and the cradle seat (13) have T-shaped grooves.

6. A spring-loaded rocker arm with separate fixing and pressure adjustment according to claim 5, characterized in that: The number of the fixing pieces (15) is an even number.

7. A spring-loaded rocker arm with separate fixing and pressure adjustment according to claim 6, characterized in that: A stepped block (16) is provided, which passes through a fixing plate (15). The two ends of the stepped block (16) are riveted to the fixing plates (15) at the top and bottom ends.

8. A spring-loaded rocker arm with separate fixing and pressure adjustment according to claim 7, characterized in that: Rectangular holes are provided on the step block (16) and the fixing plate (15). A block nut (17) is provided to pass through the rectangular holes on the rocker seat (13) and the fixing plate (15). The size of the rectangular hole on the fixing plate (15) is larger than the size of the block nut (17). The two ends of the block nut (17) are riveted to the rocker seat (13). A fixing screw (18) is provided to pass through the step block (16) and be threaded to the block nut (17). The fixing screw (18) is rotatably connected to the step block (16).

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