Cradle for compact spinning machine

Abstract

The utility model discloses a cradle for a compact spinning machine. The cradle comprises a cradle body, a front jaw, a middle jaw and a rear jaw, the front jaw is provided with a front leather roller assembly, and the front leather roller assembly is composed of a first leather roller, a second leather roller, a pressure guide block and a spring; a first clamping groove and a second clamping groove are formed in the pressure guide block, a shaft of the first leather roller is movably buckled in the first clamping groove, and a shaft of the second leather roller is movably buckled in the second clamping groove; the shaft of the first leather roller is movably buckled in the first clamping groove of the pressure guide block, and the pressure guide block is movably connected in the clamping groove of the front jaw through the shaft of the first leather roller and can swing in the clamping groove; and one end of the spring is connected with the front jaw, and the other end of the spring is pressed on the pressure guide block. The pressure guide block can be stably pressed, so that the yarn forming quality and stability can be ensured, and the pressure guide block has the characteristics of good reliability and high safety.

Description

Technical Field

[0001] The utility model relates to the technical field of textile machinery accessories, in particular to a cradle for a compact spinning machine. Background Art

[0002] The compact spinning machine is a common ring spinning machine with a mechanism for reducing the spinning triangle area installed in front of the front roller. After the fibers are output from the nip formed by the front roller and the upper roller, they pass through the negative pressure control area formed by the profiled negative pressure suction pipe. Each spindle position has a strip-shaped negative pressure suction port, the starting point is on the profiled negative pressure suction pipe close to the front roller nipple, and the end point is on the profiled negative pressure suction pipe near the auxiliary transmission roller. Each negative pressure suction port is covered by a grid circle. The negative pressure airflow of the profiled negative pressure suction pipe passes through the grid circle to gather the fibers passing through it, and then is output through the auxiliary roller and the auxiliary transmission roller to achieve the purpose of controlling hairiness.

[0003] The problem with this compact spinning drafting device is that the pressure of the auxiliary roller on the auxiliary transmission roller comes from the pressure of the original front jaw of the cradle borrowed through the pressure guide block and the auxiliary roller's own weight. The pressure itself is relatively small, and during long-term use, the pressure becomes smaller due to the long-term pressure of the front jaw spring of the cradle, which can easily lead to insufficient pressure of the auxiliary roller on the auxiliary transmission roller, thereby affecting the yarn quality and stability.

[0004] The patent document in the Chinese patent database, with application number CN97205666.1 and name "Pneumatic Pressurized Cradle of Spinning Machine", discloses a technical solution for solving the problems of complex structure, non-constant pressure and non-release pressure of the cradle in compact spinning. It hinges the cradle body, slot seat and adjustment seat in sequence to form the lever force distribution system structure of the cradle, and distributes the pressure to the front, middle and rear rollers in a certain proportion; and uses compressed air as the pressurization source. Since compressed air is a good elastic body, there is no problem of reduced pressure caused by elastic force decay like metal springs. At the same time, compressed air can attenuate the mechanical vibration during the operation of the spinning machine and reduce the fluctuation of pressure, so that the cradle has the advantages of strong vibration absorption and constant pressure on the yarn. Since compressed air is used as the driving force, there is still the problem of pressure fluctuation of the air pressure source, which causes the fluctuation of the pressure of the three lower rollers and ultimately leads to the stability and quality problems of drafting. Utility Model Content

[0005] The utility model is used to overcome the defects of the prior art and provide a cradle for a compact spinning machine to solve the problems mentioned in the background technology.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A cradle for a compact spinning machine, comprising a frame and a front jaw, a middle jaw and a rear jaw arranged thereon; characterized in that a front leather roller assembly is arranged on the front jaw, and the front leather roller assembly consists of a first leather roller, a second leather roller, a pressure guide block and a spring; a first clamping groove and a second clamping groove are arranged on the pressure guide block, the shaft of the first leather roller is movably buckled in the first clamping groove, and the shaft of the second leather roller is movably buckled in the second clamping groove; the pressure guide block is movably connected to the clamping groove of the front jaw through the shaft of the first leather roller, and can swing in the clamping groove; one end of the spring is connected to the front jaw, and the other end contacts and presses on the pressure guide block.

[0008] The above-mentioned cradle for the compact spinning machine, the spring consists of a supporting and positioning section, an elastic section, and a contact and pressure section; the elastic section is arc-shaped, two in number, one end of which is connected to the supporting and positioning section, and the other end is connected to the contact and pressure section; the elastic section and the contact and pressure section are connected to form a door-shaped structure; the supporting and positioning section is connected to the front jaw; the contact and pressure section contacts and presses on the pressure guide block, and the contact and pressure position is located above the second roller.

[0009] The above-mentioned cradle for compact spinning machine has a pressure of 5N-40N when the contact and pressure section contacts and presses on the pressure guide block.

[0010] The above-mentioned cradle for compact spinning machines, the supporting positioning section is composed of an inserted supporting section, a positioning section, and an upper lever section; the front jaw is provided with a plug hole matching the inserted supporting section, the inserted supporting section is inserted into the plug hole, and the positioning section presses against the end of the front jaw to form a positioning.

[0011] The above-mentioned cradle for compact spinning machines, the inserted supporting section is a U-shaped elastic structure, the width of the U-shaped bottom is the same as the width of the plug hole, the distance between the two side columns of the U-shape is greater than the width of the U-shaped bottom, and when the inserted supporting section is inserted into the plug hole, the two side columns of the U-shape are in elastic pressure contact with the side wall of the plug hole, relying on friction to ensure the stability of the connection.

[0012] The cradle for the compact spinning machine described above, one end of the spring can be welded to the front jaw.

[0013] In the cradle for compact spinning machine, one end of the spring can be connected to the front jaw by screwing or riveting. Beneficial Effects

[0014] The beneficial effects of the utility model are as follows: First, the pressure of the pressure guide block on the second roller is increased by setting a spring, so that the pressure of the second roller on the auxiliary roller is increased, which solves the problem of insufficient pressure of the second roller on the auxiliary roller, improves the operation synchronization of the grid ring and the auxiliary roller, and solves the problem of unstable spinning quality caused by the asynchronous operation of the grid ring and the auxiliary roller. It not only helps to improve the quality of the yarn, but also can significantly reduce the three knots (knots), namely, thick knots, thin knots, and cotton knots. Second, under the condition of ensuring the pressure and yarn quality, the diameter of the auxiliary roller can be appropriately reduced, which increases the service life and service life of the auxiliary roller and reduces the operating cost. Third, the spring increases the pressure without affecting the overall structure and cleaning work. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a partial structural schematic diagram of the utility model;

[0018] Figure 3 This is a schematic diagram of the main view of the spring structure of the utility model;

[0019] Figure 4 It is a top view schematic diagram of the spring structure of the utility model;

[0020] Figure 5 It is a side view schematic diagram of the spring structure of the utility model;

[0021] Figure 6 It is another partial structural schematic diagram of the utility model;

[0022] The symbols in the figure represent:

[0023] 1. First roller, 2. Second roller, 3. Pressure guide block, 4. Spring, 5. Front jaw, 6. Frame, 7. Middle jaw, 8. Rear jaw, 3-1. First slot, 3-2. Second slot, 4-1. Support and positioning section, 4-2. Elastic section, 4-3. Contact and pressure section, 4-1-1. Support section, 4-1-2. Positioning section, 4-1-3. Upper lever section. DETAILED DESCRIPTION

[0024] The utility model is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0025] like Figure 1-6As shown, the utility model comprises a frame (6) and a front jaw (5), a middle jaw (7) and a rear jaw (8) arranged thereon; the characteristic is that a front leather roller assembly is arranged on the front jaw (5), and the front leather roller assembly consists of a first leather roller (1), a second leather roller (2), a pressure guide block (3) and a spring (4); a first clamping groove (3-1) and a second clamping groove (3-2) are arranged on the pressure guide block (3), the shaft of the first leather roller (1) is movably clamped in the first clamping groove (3-1), and the shaft of the second leather roller (2) is movably clamped in the second clamping groove (3-2); the shaft of the first leather roller (1) is movably clamped in the first clamping groove (3-1) of the pressure guide block (3), and the pressure guide block (3) is movably connected to the clamping groove of the front jaw (5) through the shaft of the first leather roller (1), and can swing in the clamping groove; one end of the spring (4) is connected to the front jaw (5), and the other end contacts and presses on the pressure guide block (3).

[0026] By providing a spring (4), the pressure of the pressure guide block 3 on the second roller (2) is increased, thereby increasing the pressure of the second roller (2) on the auxiliary roller, solving the problem of insufficient pressure of the second roller (2) on the auxiliary roller, thereby improving the operation synchronization of the grid ring and the auxiliary roller, solving the problem of unstable spinning quality caused by the asynchronous operation of the grid ring and the auxiliary roller, and not only helping to improve the quality of the yarn, but also significantly reducing the three knots (knots), namely, thick knots, thin knots and cotton knots.

[0027] The spring 4 can be designed as follows: the spring (4) is composed of a supporting positioning section (4-1), an elastic section (4-2), and a contact and pressure section (4-3); the elastic section (4-2) is arc-shaped, and there are two of them, one end of which is connected to the supporting positioning section (4-1), and the other end is connected to the contact and pressure section (4-3); the elastic section (4-2) and the contact and pressure section (4-3) are connected to form a door-shaped structure; the supporting positioning section (4-1) is connected to the front jaw (5); the contact and pressure section (4-3) contacts and presses on the pressure guide block (3), and the contact and pressure position is located above the second roller (2).

[0028] The contact and pressure section (4-3) contacts and presses the pressure-guiding block (3) with a pressure between 5N and 40N.

[0029] The specific connection between the support positioning section 4-1 and the front jaw 5 can be designed as follows: the support positioning section (4-1) is composed of an insertable support section (4-1-1), a positioning section (4-1-2), and an upper lever section (4-1-3); a plug hole matching the insertable support section (4-1-1) is provided on the front jaw (5), the insertable support section (4-1-1) is inserted into the plug hole, and the positioning section (4-1-2) presses against the end of the front jaw (5) to form a positioning.

[0030] In order to increase the connection stability of the support positioning section 4-1 in the plug hole of the front jaw 5, the following design can be adopted: the inserted support section (4-1-1) is a U-shaped elastic structure, the width of the U-shaped bottom is the same as the width of the plug hole, the distance between the two side columns of the U-shape is greater than the width of the U-shaped bottom, and when the inserted support section (4-1-1) is inserted into the plug hole, the two side columns of the U-shape are in elastic pressure contact with the side wall of the plug hole, and the connection stability is ensured by friction.

[0031] The spring 4 and the front jaw 5 can also be connected by welding: one end of the spring (4) can be welded to the front jaw (5). Alternatively, a spring clip can be added, the spring and the clip are welded, and then the clip is clamped on the front jaw.

[0032] The spring 4 and the front jaw 5 can also be connected by screwing or riveting: one end of the spring (4) can be connected to the front jaw (5) by screwing or riveting. Alternatively, a spring clip can be added, the spring and the clip are connected by screwing or riveting, and then the clip is clamped on the front jaw.

Claims

1. A cradle for a compact spinning machine, comprising a frame (6) and a front jaw (5), a middle jaw (7), and a rear jaw (8) arranged thereon; characterized in that: The front jaw (5) is provided with a front leather roller assembly, which is composed of a first leather roller (1), a second leather roller (2), a pressure guide block (3) and a spring (4); the pressure guide block (3) is provided with a first clamping groove (3-1) and a second clamping groove (3-2); the shaft of the first leather roller (1) is movably buckled in the first clamping groove (3-1), and the shaft of the second leather roller (2) is movably buckled in the second clamping groove (3-2); the pressure guide block (3) is movably connected to the clamping groove of the front jaw (5) through the shaft of the first leather roller (1), and can swing in the clamping groove; one end of the spring (4) is connected to the front jaw (5), and the other end contacts and presses on the pressure guide block (3).

2. The cradle for a compact spinning machine according to claim 1, characterized in that: The spring (4) is composed of a supporting and positioning section (4-1), an elastic section (4-2), and a contact and pressure section (4-3); the elastic section (4-2) is arc-shaped, and there are two of them, one end of which is connected to the supporting and positioning section (4-1), and the other end of which is connected to the contact and pressure section (4-3); the elastic section (4-2) and the contact and pressure section (4-3) are connected to form a door-shaped structure; the supporting and positioning section (4-1) is connected to the front jaw (5); the contact and pressure section (4-3) contacts and presses on the pressure guide block (3), and the contact and pressure position is located above the second roller (2).

3. The cradle for a compact spinning machine according to claim 1, characterized in that: The contact and pressure section (4-3) contacts and presses the pressure-guiding block (3) with a pressure between 5N and 40N.

4. The cradle for a compact spinning machine according to claim 2, characterized in that: The support positioning section (4-1) is composed of an insertable support section (4-1-1), a positioning section (4-1-2), and an upper lever section (4-1-3); a plug hole matching the insertable support section (4-1-1) is provided on the front jaw (5); the insertable support section (4-1-1) is inserted into the plug hole, and the positioning section (4-1-2) presses against the end of the front jaw (5) to form a positioning.

5. The cradle for a compact spinning machine according to claim 4, characterized in that: The insertable support section (4-1-1) is a U-shaped elastic structure, the width of the U-shaped bottom is the same as the width of the plug hole, the distance between the two side columns of the U-shape is greater than the width of the U-shaped bottom, and when the insertable support section (4-1-1) is inserted into the plug hole, the two side columns of the U-shape are in elastic pressure contact with the side wall of the plug hole, and the connection stability is ensured by friction.

6. The cradle for a compact spinning machine according to claim 1, characterized in that: One end of the spring (4) can be welded to the front jaw (5).

7. The cradle for a compact spinning machine according to claim 1, characterized in that: One end of the spring (4) can be connected to the front jaw (5) by screwing or riveting.

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