Rolling mechanism for a drawing frame

Abstract

The utility model discloses a kind of roller mechanism of drawing frame, including equipment frame, first roller body, motor, mounting portion, sleeve, two second roller bodies, two groups of elastic members, swing arm, press roll, guide circle. First make press roll keep loose state, guide sliver through sleeve surface;Make press roll into working condition again, cooperate to sleeve extrude sliver, form roller pressure position. When sliver passes through roller pressure position, with the change of sliver thickness, sleeve can be offset up and down, sleeve offset keeps and the adhesion of two second roller bodies in the process, two roller bodies pass friction to the rotation of first roller body to sleeve, make sleeve rotate, drive sliver to pass through roller pressure position, while press roll also follow rotation. With beneficial effect: the change of sliver thickness can better adapt, improve roller pressure effect.

Description

Technical Field

[0001] This utility model relates to drawing frames, and more particularly to a rolling mechanism for a drawing frame. Background Technology

[0002] A drawing frame combines multiple yarns. The pressing mechanism is a crucial part of the drawing frame, typically consisting of an upper pressing roller, a lower pressing roller, and a motor. The upper and lower pressing rollers form a pressing position. The motor drives the lower pressing roller to rotate, and through friction, the yarn passes through the pressing position, while the upper pressing roller also rotates. Multiple yarns to be combined pass through the pressing position together, facilitating subsequent drawing processes. To prevent the upper pressing roller from jumping upwards due to equipment vibration, it is typically stopped after reaching the pressing position. In other words, both the upper and lower pressing rollers are limited relative to the frame, and the distance between the pressing positions is fixed. However, the thickness of the yarn can change in real time, affecting the pressing effect. Utility Model Content

[0003] This application provides a rolling mechanism for a drawing frame that can solve the problems mentioned in the background art.

[0004] This application provides a rolling mechanism for a drawing frame, comprising:

[0005] Equipment rack;

[0006] The first roller is rotatably connected to the equipment frame about a horizontal axis;

[0007] The motor is used to drive the first roller to rotate;

[0008] The mounting section is fixedly connected to the equipment frame; it includes: two first mounting portions through which the first roller body passes, and a second mounting portion outside the first roller body;

[0009] The two second rollers are connected between the two first mounting parts and can rotate around the horizontal axis and swing around the first roller, respectively keeping them in contact with the outer walls of the two sides of the upper half of the first roller.

[0010] A sleeve is fitted over the first roller body and the two second roller bodies, positioned between the two first mounting parts, and supported by the two second roller bodies;

[0011] Two sets of elastic elements act on the two second rollers respectively, so as to create a gap between the top of the inner wall of the sleeve and the top of the outer wall of the first roller;

[0012] The swing arm is hinged at one end to the equipment frame;

[0013] The pressure roller is rotatably connected to the other end of the swing arm; it has a working state where it is close to the sleeve to form a roller pressing position and a loosened state where it is away from the sleeve.

[0014] The guide ring, connected to the second mounting section, is used to allow the yarn passing through the roller pressing position.

[0015] In some embodiments, the diameter of the guide ring can be adjusted.

[0016] In some embodiments, the second mounting position has a through hole; the guide ring is strip-shaped, with one end fixed to the second mounting position and the other end protruding from the through hole; the second mounting position is also threaded with a bolt for pressing and fixing the guide ring to the through hole.

[0017] In some embodiments, the equipment frame has a vertical first insertion hole and a horizontal second insertion hole; the swing arm is threadedly connected to a threaded rod; the two ends of the threaded rod are a first insertion section and a second insertion section, respectively; the first insertion section is used to engage with the first insertion hole to keep the pressure roller in a working state; the second insertion section is used to engage with the second insertion hole to keep the pressure roller in a relaxed state.

[0018] In some embodiments, the outer wall of the sleeve is toothed.

[0019] In some embodiments, the outer wall of the pressure roller is concave and arc-shaped.

[0020] In summary, this application discloses a rolling mechanism for a drawing frame, comprising a frame, a first roller, a motor, a mounting section, a sleeve, two second rollers, two sets of elastic elements, a swing arm, a pressure roller, and a guide ring. First, the pressure roller is kept in a relaxed state to guide the yarn over the sleeve surface; then, the pressure roller is switched to a working state, engaging with the sleeve to compress the yarn, forming the rolling position. As the yarn passes through the rolling position, the sleeve can shift up and down according to changes in yarn thickness. During this shift, the sleeve remains in contact with the two second rollers. The two rollers transmit the rotation of the first roller to the sleeve through friction, causing the sleeve to rotate and carrying the yarn through the rolling position. Simultaneously, the pressure roller also rotates. The beneficial effects include better adaptation to changes in yarn thickness, improving the rolling effect. Attached Figure Description

[0021] To better illustrate the technical solutions in the embodiments of this application or the background art, the accompanying drawings used in the embodiments of this application or the background art will be described below.

[0022] Figure 1 This is a schematic diagram of the present application;

[0023] Figure 2 This is a top view of this application;

[0024] Figure 3 for Figure 2 Sectional view along the middle AA;

[0025] Figure 4 This is a bottom view of this application;

[0026] Figure 5 for Figure 4 An enlarged schematic diagram of part A in the middle;

[0027] Figure 6 This is another schematic diagram of the pressure roller;

[0028] Figure 7 This is another schematic diagram of the sleeve.

[0029] In the picture,

[0030] 1. Equipment rack; 1a. First socket; 1b. Second socket;

[0031] 2. First roller body;

[0032] 3. Electric motor;

[0033] 4. Mounting section; 4a. First mounting part; 4a1. Arc-shaped groove; 4b. Second mounting part;

[0034] 5. Sleeve;

[0035] 6. Second roller body;

[0036] 7. Elastic components;

[0037] 8. Swing arm; 8a. Threaded rod;

[0038] 9. Pressure roller;

[0039] 10. Guide ring; 101. Mounting block; 102. Stop bar; 103. Hand-tightening bolt. Detailed Implementation

[0040] The following description is provided in conjunction with the accompanying drawings, which are for illustrative purposes only and not strictly to scale. Unless otherwise defined, the technical or scientific terms used in this disclosure should be understood in their ordinary sense by one of ordinary skill in the art to which this disclosure pertains. The terms "first," "second," and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships, and these relative positional relationships may change accordingly when the absolute position of the described object changes. Unless otherwise specified, the embodiments in this application can be combined with each other.

[0041] Please see Figure 1 , Figure 2 and Figure 3 A rolling mechanism for a drawing frame includes a frame 1, a first roller body 2, a motor 3, a mounting part 4, a sleeve 5, two second roller bodies 6, two sets of elastic elements 7, a swing arm 8, a pressure roller 9, and a guide ring 10.

[0042] The first roller 2 is rotatably connected to the equipment frame 1 around a horizontal axis. More specifically, the two ends of the first roller 2 can be stepped, and the rotational connection between the first roller 2 and the equipment frame 1 is achieved through two bearing seats.

[0043] Motor 3 is used to drive the first roller 2 to rotate. More specifically, motor 3 can be a motor 3, and a planetary gear reducer is provided between motor 3 and the first roller 2 to reduce the output shaft of motor 3 before transmitting the speed to the first roller 2.

[0044] The mounting part 4 is fixedly connected to the equipment frame 1. The mounting part 4 includes two first mounting parts 4 through which the first roller 2 passes, and a second mounting part 4 outside the first roller 2.

[0045] Both second rollers 6 are connected between the two first mounting portions 4, meaning that both ends of the second rollers 6 are connected to the two first mounting portions 4 respectively. The second rollers 6 can rotate around a horizontal axis and swing around the first rollers 2; that is, both ends of the second rollers 6 are rotatably equipped with connecting blocks, which are fan-shaped. The first mounting portions 4 have arc-shaped grooves 4a1 for the connecting blocks to slide, and the center of these arc-shaped grooves 4a1 is located on the axis of the first rollers 2. The two second rollers 6 are respectively kept in contact with the outer walls of the upper half of the first rollers 2, meaning that the diameter of the second rollers 6 is set according to the position of the arc-shaped grooves 4a1 and the diameter of the first rollers 2.

[0046] The sleeve 5 is fitted onto the first roller body 2 and the two second roller bodies 6. The sleeve 5 is also positioned between the two first mounting parts 4. The sleeve 5 is supported by the two second roller bodies 6, that is, the inner wall of the sleeve 5 abuts against the two second roller bodies 6.

[0047] Two sets of elastic elements 7 act on the two second rollers 6 respectively. More specifically, one set of elastic elements 7 can be two compression springs placed in the arc-shaped groove 4a1, the cross-section of the arc-shaped groove 4a1 being convex, preventing the compression springs from leaving. Correspondingly, the first mounting part 4 can be composed of two detachably connected pieces, with the narrower and wider portions of the arc-shaped groove 4a1 respectively located on these two pieces. The two sets of elastic elements 7 are used to create a gap between the top of the inner wall of the sleeve 5 and the top of the outer wall of the first roller 2.

[0048] One end of the swing arm 8 is hinged to the equipment frame 1.

[0049] The pressure roller 9 is rotatably connected to the other end of the swing arm 8. By swinging the swing arm 8 and limiting the swing of the swing arm 8, the pressure roller 9 has a working state of being close to the sleeve 5 to form a rolling position and a loose state of being away from the sleeve 5.

[0050] Please see Figure 2 and Figure 3 In some embodiments, the equipment frame 1 has a vertical first insertion hole 1a and a horizontal second insertion hole 1b; the swing arm 8 is threadedly connected to a threaded rod 8a; the two ends of the threaded rod 8a are a first insertion section and a second insertion section, respectively. The first insertion section is used to cooperate with the first insertion hole 1a to keep the pressure roller 9 in the working state; the second insertion section is used to cooperate with the second insertion hole 1b to keep the pressure roller 9 in the loose state.

[0051] Both ends of the threaded rod 8a have grooves for screwdrivers to engage. Rotating the threaded rod 8a causes it to move relative to the rocker arm 8. First, ensure that neither end of the threaded rod 8a extends beyond the rocker arm 8; then rotate the rocker arm 8 to put the pressure roller 9 into the working or relaxed state; then rotate the threaded rod 8a to allow the first insertion section to enter the first insertion hole 1a or the second insertion section to enter the second insertion hole 1b.

[0052] First, keep the pressure roller 9 in a loose state to guide the yarn through the surface of the sleeve 5; then turn the pressure roller 9 into a working state, engaging with the sleeve 5 to squeeze the yarn, forming a roller pressing position. As the yarn passes through the roller pressing position, the sleeve 5 can shift up and down as the yarn thickness changes. During the shifting process, the sleeve 5 maintains contact with the two second rollers 6. The two rollers transmit the rotation of the first roller 2 to the sleeve 5 through friction, causing the sleeve 5 to rotate and drive the yarn through the roller pressing position. At the same time, the pressure roller 9 also rotates.

[0053] Please see Figure 1 and Figure 4 The guide ring 10 is connected to the second mounting part 4 and is used for the yarn passing through the roller pressing position.

[0054] In some embodiments, the diameter of the guide ring 10 is adjustable, allowing for better adaptation to yarns of different thicknesses.

[0055] Please see Figure 4 and Figure 5 Furthermore, the guide ring 10 includes a mounting block 101, a stop bar 102, and a hand-tightening bolt 103. The mounting block 101 is fixedly connected to the second mounting portion 4 and has a through groove. The stop bar 102 is bendable and deformable, with one end fixed to the mounting block 101 and the other end protruding from the through groove. The hand-tightening bolt 103 is threadedly connected to the mounting block 101 and can press the stop bar 102 tightly and fix it in the through groove.

[0056] When the diameter of the guide ring 10 needs to be adjusted, loosen the hand-tightening bolt 103, pull the end of the stop bar 102 that is protruding from the through hole, adjust the diameter of the guide ring 10, and after the adjustment is completed, tighten the hand-tightening bolt 103.

[0057] Please see Figure 6 In some embodiments, the outer wall of the sleeve 5 is toothed. This improves the rolling effect of the roller pressing position on the yarn.

[0058] Please see Figure 7 In some embodiments, the outer wall of the pressure roller 9 is concave and arc-shaped. This causes the yarn to tend to converge towards the center, improving the roller pressing effect on the yarn.

Claims

1. A rolling mechanism for a drawing frame, characterized in that, include: Equipment rack (1); The first roller (2) is rotatably connected to the equipment frame (1) around the horizontal axis; Motor (3) is used to drive the first roller (2) to rotate; Mounting part (4) is fixedly connected to the equipment frame (1); including: two first mounting parts (4) through which the first roller body (2) passes, and a second mounting part (4) outside the first roller body (2); The two second rollers (6) are connected between the two first mounting parts (4) and can rotate around the horizontal axis and swing around the first roller (2), respectively keeping them attached to the outer walls of the two sides of the upper half of the first roller (2); The sleeve (5) is fitted between the first roller body (2) and the two second roller bodies (6), and is located between the two first mounting parts (4) and supported by the two second roller bodies (6); Two sets of elastic elements (7) act on two second rollers (6) respectively to create a gap between the top of the inner wall of the sleeve (5) and the top of the outer wall of the first roller (2); The swing arm (8) is hinged at one end to the equipment frame (1); The pressure roller (9) is rotatably connected to the other end of the swing arm (8); it has a working state that is close to the sleeve (5) to form a roller pressing position and a loosened state that is away from the sleeve (5); Guide ring (10), connected to the second mounting part (4); used for the yarn passing through the roller pressing position.

2. The rolling mechanism of a drawing frame according to claim 1, characterized in that, The diameter of the guide ring (10) can be adjusted.

3. The rolling mechanism of a drawing frame according to claim 2, characterized in that, The second mounting position has a through hole; the guide ring (10) is strip-shaped, with one end fixed to the second mounting position and the other end passing through the through hole; the second mounting position is also threaded with a bolt for pressing and fixing the guide ring (10) to the through hole.

4. The rolling mechanism of a drawing frame according to claim 1, characterized in that, The equipment frame (1) has a vertical first insertion hole (1a) and a horizontal second insertion hole (1b); the swing arm (8) is threadedly connected to a threaded rod (8a); the two ends of the threaded rod (8a) are a first insertion section and a second insertion section, respectively; the first insertion section is used to cooperate with the first insertion hole (1a) to keep the pressure roller (9) in the working state; the second insertion section is used to cooperate with the second insertion hole (1b) to keep the pressure roller (9) in the loose state.

5. The rolling mechanism of a drawing frame according to claim 1, characterized in that, The outer wall of the sleeve (5) is toothed.

6. The rolling mechanism of a drawing frame according to claim 1, characterized in that, The outer wall of the pressure roller (9) is concave arc shape.

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