Precise pressure adjusting mechanism for plate spring cradle of spinning machine

Abstract

The utility model discloses a pressure precision adjusting mechanism for a plate spring cradle of a spinning machine, which relates to the technical field of parts of the spinning machine and comprises a hollow rocker arm, and adjustable plate spring frames are arranged at the end of the hollow rocker arm in a rectangular array mode. Limiting sliding grooves corresponding to the adjustable plate spring frames are formed in the upper portion and the two sides of the hollow rocker arm. Wherein the adjustable plate spring frame is provided with a hollow fixing seat placed on the inner side of the hollow rocker arm, the hollow fixing seat comprises a U-shaped connecting frame, and an elastic plate spring is installed at the end of the U-shaped connecting frame; threaded holes are symmetrically formed in the upper portion of the U-shaped connecting frame. According to the utility model, through the threaded fit between the threaded hole and the threaded adjusting column, the position of the end part of the threaded adjusting column is adjusted, then the position of the adjusting pressing plate on the inner side of the U-shaped connecting frame is adjusted, and the spring force of the elastic plate spring is adjusted by extruding the end part of the elastic plate spring through the adjusting pressing plate.

Description

Technical Field

[0001] This utility model specifically relates to the technical field of spinning machine parts, and more specifically to a precision pressure adjustment mechanism for a spinning machine leaf spring cradle. Background Technology

[0002] The leaf spring cradle is a core component of a ring spinning machine. It primarily applies pressure and controls the roller system during spinning to achieve precise adjustment of yarn draft. Through its structure and the elasticity of the leaf springs, the cradle applies stable pressure to the rollers. The rollers are crucial components in the spinning machine for drafting and transporting fibers. The pressure applied by the cradle ensures that the fibers are evenly and tightly gripped between the rollers, thus achieving effective fiber drafting.

[0003] However, in practice, it has been noted that most leaf springs currently have a pressure adjustment rod or screw rod on top, and the spring pressure is adjusted by adjusting the spring compression ratio. Since the adjusting bolt is installed between the leaf spring and the connecting seat, the leaf spring needs to be removed before adjustment, which results in a long adjustment time. Utility Model Content

[0004] The purpose of this invention is to provide a precision adjustment mechanism for the pressure of a leaf spring cradle in a spinning machine. Each leaf spring has a threaded post on its upper part. By adjusting the threaded engagement between the threaded post and the connecting seat, the position of the threaded post inside the connecting seat is adjusted, thereby adjusting the curvature of the leaf spring end and thus precisely adjusting the leaf spring pressure. Furthermore, the end of the threaded post extends to the top of the cradle, allowing adjustment without disassembling the cradle. This addresses the technical problems mentioned in the background section.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A precision adjustment mechanism for the pressure of a spinning machine leaf spring rocker includes a hollow rocker arm. The ends of the hollow rocker arm are provided with adjustable leaf spring frames in a rectangular array. Limiting grooves corresponding to the adjustable leaf spring frames are provided on the top and sides of the hollow rocker arm.

[0007] The adjustable leaf spring frame has a hollow fixed seat placed inside the hollow rocker arm, and the hollow fixed seat includes a U-shaped connecting frame, the end of which is fitted with an elastic leaf spring.

[0008] The U-shaped connecting frame has symmetrical threaded holes on its upper part. Among them, the threaded hole near the end of the elastic leaf spring is threaded with a threaded adjusting post, and the threaded adjusting post is located above the elastic leaf spring.

[0009] As a further technical solution of this utility model, the end of the elastic leaf spring located inside the U-shaped connecting frame is U-shaped, and the bottom of the threaded adjusting column contacts the upper part of the elastic leaf spring located at the U-shaped connecting frame through the adjusting pressure plate.

[0010] As a further technical solution of this utility model, the bottom of the U-shaped connecting frame is fixedly connected to a limit stop bar, and the end of the U-shaped connecting frame away from the elastic leaf spring is symmetrically provided with positioning slots. The elastic leaf spring is located above the limit stop bar, and both sides of the elastic leaf spring are integrally provided with positioning protrusions corresponding to the positioning slots.

[0011] As a further technical solution of this utility model, the end of the elastic leaf spring away from the U-shaped connecting frame is fixedly connected to an end pressure head, a metal spring sheet is fixedly connected to the inner side of the U-shaped connecting frame, and an inverted U-shaped groove is provided at the bottom of the U-shaped connecting frame.

[0012] As a further technical solution of this utility model, the lengths of the multiple limiting slides increase sequentially from front to back, and a positioning pressure plate is placed above each of the limiting slides, and the end of the threaded adjustment column away from the U-shaped connecting frame extends through the positioning pressure plate to the top.

[0013] As a further technical solution of this utility model, the positioning plate is threaded with a locking bolt, and the end of the locking bolt passes through the limiting slide groove and is threadedly connected to the threaded hole on the U-shaped connecting frame.

[0014] The end of the elastic leaf spring furthest from the U-shaped connecting frame is inclined downwards.

[0015] As a further technical solution of this utility model, an annular hollow seat is provided below the hollow rocker arm, and the pin rod that is fixedly connected to the hollow rocker arm passes through the annular hollow seat, and the pin rod is movably connected to the annular hollow seat.

[0016] As a further technical solution of this utility model, the hollow rocker arm has a T-shaped slot at its end, and a swing rocker arm is provided above the hollow rocker arm. One end of the swing rocker arm extends through the T-shaped slot to the inner side of the hollow rocker arm, and the swing rocker arm is movably connected to the hollow rocker arm through the T-shaped slot.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. In this utility model, the threaded adjusting column is rotated by the internal hexagonal groove above the threaded adjusting column. The end position of the threaded adjusting column is adjusted by the threaded engagement between the threaded hole and the threaded adjusting column, thereby adjusting the position of the adjusting pressure plate inside the U-shaped connecting frame. The adjusting pressure plate squeezes the end of the elastic leaf spring, thereby adjusting the spring force of the elastic leaf spring.

[0019] 2. This utility model uses the reaction force generated when the bottom of the elastic leaf spring is compressed to tension the yarn passing under the elastic leaf spring. Furthermore, the end of the elastic leaf spring is equipped with a metal spring piece through the end pressure head, which works in conjunction with the U-shaped connecting frame to facilitate workers to precisely adjust the tension of the yarn.

[0020] 3. In this utility model, adjustable leaf spring frames arranged in a rectangular array on a hollow rocker arm can be used to tension multiple positions of the yarn. The hollow rocker arm is provided with limiting grooves corresponding to the adjustable leaf spring frames, and the length of the limiting grooves increases sequentially from front to back, which facilitates the adjustment of the position of each adjustable leaf spring frame inside the hollow rocker arm, thereby improving the adjustment accuracy. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model in use.

[0022] Figure 2 This utility model Figure 1 A schematic diagram of the bottom structure.

[0023] Figure 3 This utility model Figure 1 A partial structural diagram.

[0024] Figure 4 This is a schematic diagram showing the positional structure of the adjustable leaf spring frame, positioning pressure plate, and locking bolt in this utility model.

[0025] Figure 5 This is a three-dimensional structural diagram of the hollow fixing base of this utility model.

[0026] Figure 6 This utility model Figure 5 A schematic diagram of the bottom structure.

[0027] Figure 7 This utility model Figure 4 A partial structural diagram.

[0028] Figure 8 This utility model Figure 7 A magnified view of a portion of the image.

[0029] In the picture:

[0030] Hollow rocker arm-1, pin rod-2, annular hollow seat-3, limiting slide groove-4, swing rocker arm-5, T-shaped slot-6, adjustable leaf spring frame-7, hollow fixed seat-71, U-shaped connecting frame-711, threaded hole-712, threaded adjusting column-713, adjusting pressure plate-714, limiting stop rod-715, positioning slot-716, elastic leaf spring-72, end pressure head-73, metal spring-74, positioning pressure plate-8, locking bolt-9. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Please see Figure 1-8 This utility model embodiment provides a precision adjustment mechanism for the pressure of a spinning machine leaf spring rocker arm, including a hollow rocker arm 1. The end of the hollow rocker arm 1 is provided with an adjustable leaf spring frame 7 in a rectangular array, and the upper and both sides of the hollow rocker arm 1 are provided with limiting grooves 4 corresponding to the adjustable leaf spring frame 7.

[0033] The adjustable leaf spring frame 7 has a hollow fixed seat 71 placed inside the hollow rocker arm 1, and the hollow fixed seat 71 includes a U-shaped connecting frame 711, with an elastic leaf spring 72 installed at the end of the U-shaped connecting frame 711.

[0034] The U-shaped connecting bracket 711 has symmetrically arranged threaded holes 712 on its upper side. A threaded adjusting post 713 is threadedly connected to the threaded hole 712 near the end of the elastic leaf spring 72, and the threaded adjusting post 713 is located above the elastic leaf spring 72.

[0035] Furthermore, the elastic leaf spring 72 is U-shaped at one end inside the U-shaped connecting frame 711, and the bottom of the threaded adjusting column 713 contacts the elastic leaf spring 72 above one end of the U-shaped connecting frame 711 via the adjusting pressure plate 714.

[0036] By adopting the above technical solution, the threaded adjusting column 713 is rotated by the internal hexagonal groove above the threaded adjusting column 713. The threaded engagement between the threaded hole 712 and the threaded adjusting column 713 adjusts the end position of the threaded adjusting column 713, thereby adjusting the position of the adjusting pressure plate 714 inside the U-shaped connecting frame 711. The adjusting pressure plate 714 presses the end of the elastic leaf spring 72, thereby adjusting the spring force of the elastic leaf spring 72.

[0037] More specifically, the bottom of the U-shaped connecting frame 711 is fixedly connected to a limit stop bar 71, and the end of the U-shaped connecting frame 711 away from the elastic leaf spring 72 is symmetrically provided with a positioning slot 716. The elastic leaf spring 72 is located above the limit stop bar 715, and both sides of the elastic leaf spring 72 are integrally provided with positioning protrusions corresponding to the positioning slot 716.

[0038] Furthermore, the end of the elastic leaf spring 72 away from the U-shaped connecting frame 711 is fixedly connected to an end pressure head 73, a metal spring sheet 74 is fixedly connected to the inner side of the U-shaped connecting frame 711, and an inverted U-shaped groove is provided at the bottom of the U-shaped connecting frame 711.

[0039] By adopting the above technical solution, the yarn passing under the elastic leaf spring 72 is tensioned by the reaction force generated when the bottom of the elastic leaf spring 72 is compressed. Furthermore, the end of the elastic leaf spring 72 is equipped with a metal spring piece 74 through the end pressure head 73, which works in conjunction with the U-shaped connecting frame 711, making it convenient for workers to accurately adjust the tension of the yarn.

[0040] More specifically, the lengths of the multiple limiting slides 4 increase sequentially from front to back, and a positioning pressure plate 8 is placed above each of the limiting slides 4, and the end of the threaded adjusting column 713 away from the U-shaped connecting frame 711 extends through the positioning pressure plate 8 to the top.

[0041] Furthermore, the positioning plate 8 is threaded with a locking bolt 9, and the end of the locking bolt 9 passes through the limiting groove 4 and is threadedly connected to the threaded hole 712 on the U-shaped connecting bracket 711.

[0042] The end of the elastic leaf spring 72 away from the U-shaped connecting frame 711 is inclined downward.

[0043] Furthermore, an annular hollow seat 3 is provided below the hollow rocker arm 1, and the pin 2 fixedly connected to the hollow rocker arm 1 passes through the annular hollow seat 3, and the pin 2 is movably connected to the annular hollow seat 3.

[0044] Furthermore, a T-shaped slot 6 is provided at the end of the hollow rocker arm 1, and a swing rocker arm 5 is provided above the hollow rocker arm 1. One end of the swing rocker arm 5 extends through the T-shaped slot 6 to the inner side of the hollow rocker arm 1, and the swing rocker arm 5 is movably connected to the hollow rocker arm 1 through the T-shaped slot 6.

[0045] By adopting the above technical solution, the adjustable leaf spring frames 7 arranged in a rectangular array on the hollow rocker arm 1 can tension multiple positions of the yarn. The hollow rocker arm 1 is provided with limiting grooves 4 corresponding to the adjustable leaf spring frames 7, and the length of the limiting grooves 4 increases sequentially from front to back, which facilitates the adjustment of the position of each adjustable leaf spring frame 7 on the inner side of the hollow rocker arm 1, thereby improving the adjustment accuracy.

[0046] Furthermore, the metal spring 74 is C-shaped, and a round hole is provided at the bottom of the hollow rocker arm 1, and a hole corresponding to the round hole on the hollow rocker arm 1 is provided on the annular hollow seat 3.

[0047] Furthermore, a handle is fixedly connected to the end of the swing rocker arm 5 away from the T-shaped slot 6, and the swing rocker arm 5 is located on the side of the locking bolt 9.

[0048] The working principle of this utility model is as follows: When in use, the leaf spring rocker arm is first installed on the spinning machine, and the yarn is passed around the bottom of the adjustable leaf spring frame 7. The threaded adjusting column 713 is rotated using an Allen wrench. The threaded engagement between the threaded adjusting column 713 and the threaded hole 712 causes the threaded adjusting column 713 to push the adjusting pressure plate 714 to move, thereby adjusting the bending degree of the end of the elastic leaf spring 72 and thus adjusting the elastic force of the elastic leaf spring 72. In addition, the locking bolt 9 can be loosened and adjusted to slide inside the limiting slide groove 4 according to the length of the limiting slide groove 4, thereby adjusting the position of the hollow fixed seat 71 inside the hollow rocker arm 1. The structure is simple, the operation is very convenient, and it effectively reduces the intensity of manual labor.

[0049] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0050] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A precision pressure adjustment mechanism for a leaf spring cradle of a spinning machine, characterized in that: Includes a hollow rocker arm (1), the end of which is provided with an adjustable leaf spring frame (7) in a rectangular array, and the top and sides of the hollow rocker arm (1) are provided with limiting grooves (4) corresponding to the adjustable leaf spring frame (7); The adjustable leaf spring frame (7) has a hollow fixed seat (71) placed inside the hollow rocker arm (1), and the hollow fixed seat (71) includes a U-shaped connecting frame (711), and an elastic leaf spring (72) is installed at the end of the U-shaped connecting frame (711). The U-shaped connecting bracket (711) has symmetrically arranged threaded holes (712) on its upper side. A threaded adjusting post (713) is threaded into the threaded hole (712) near the end of the elastic leaf spring (72), and the threaded adjusting post (713) is located above the elastic leaf spring (72).

2. The precision adjustment mechanism for the pressure of the leaf spring cradle of a spinning machine according to claim 1, characterized in that: The elastic leaf spring (72) is located in a U-shape at one end inside the U-shaped connecting frame (711), and the bottom of the threaded adjusting column (713) contacts the elastic leaf spring (72) above the U-shaped connecting frame (711) through the adjusting pressure plate (714).

3. The precision adjustment mechanism for the pressure of the leaf spring cradle of the spinning machine according to claim 2, characterized in that: The bottom of the U-shaped connecting frame (711) is fixedly connected to a limit stop (71), and the end of the U-shaped connecting frame (711) away from the elastic leaf spring (72) is symmetrically provided with positioning slots (716). The elastic leaf spring (72) is located above the limit stop (715), and both sides of the elastic leaf spring (72) are integrally provided with positioning protrusions corresponding to the positioning slots (716).

4. The precision adjustment mechanism for the pressure of the leaf spring cradle of a spinning machine according to claim 3, characterized in that: The elastic leaf spring (72) is fixedly connected to an end pressure head (73) at the end away from the U-shaped connecting frame (711), a metal spring sheet (74) is fixedly connected to the inner side of the U-shaped connecting frame (711), and an inverted U-shaped groove is provided at the bottom of the U-shaped connecting frame (711).

5. The precision adjustment mechanism for the pressure of the leaf spring cradle of a spinning machine according to claim 4, characterized in that: The lengths of the multiple limiting slides (4) increase sequentially from front to back. A positioning pressure plate (8) is placed above each of the limiting slides (4), and the end of the threaded adjusting column (713) away from the U-shaped connecting frame (711) extends through the positioning pressure plate (8) to the top.

6. The precision adjustment mechanism for the pressure of the leaf spring cradle of a spinning machine according to claim 5, characterized in that: The positioning plate (8) is threaded with a locking bolt (9), and the end of the locking bolt (9) passes through the limiting slide groove (4) and is threadedly connected to the threaded hole (712) on the U-shaped connecting frame (711). The elastic leaf spring (72) is inclined downward at the end away from the U-shaped connecting frame (711).

7. The precision adjustment mechanism for the pressure of the leaf spring cradle of a spinning machine according to claim 6, characterized in that: The hollow rocker arm (1) is also provided with an annular hollow seat (3) below it, and the pin (2) fixedly connected to the hollow rocker arm (1) passes through the annular hollow seat (3), and the pin (2) is movably connected to the annular hollow seat (3).

8. The precision adjustment mechanism for the pressure of the leaf spring cradle of a spinning machine according to claim 7, characterized in that: The hollow rocker arm (1) has a T-shaped slot (6) at its end and a swing rocker arm (5) is provided above the hollow rocker arm (1). One end of the swing rocker arm (5) extends through the T-shaped slot (6) to the inside of the hollow rocker arm (1) and the swing rocker arm (5) is movably connected to the hollow rocker arm (1) through the T-shaped slot (6).

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