Automatic threading linkage mechanism of a drawing frame

Abstract

The present invention discloses an automatic threading linkage mechanism of a drawing frame. The present invention comprises a shelf provided with a bell mouth, the bell mouth is located below the cotton collector mouth, and also comprises a pressurizing assembly, the rear end of the shelf is rotatably arranged on the rear pressure roller assembly, the front end of the shelf is placed on and in contact with the front pressure roller assembly, the front pressure roller assembly is rotatably arranged on the rear pressure roller seat, and the pressurizing assembly is transmission-connected with the front pressure roller assembly. When the present invention needs to automatically thread the cotton frame, the front pressure roller assembly is rotated forward and opened by the pressurizing assembly, and the shelf is lifted in linkage therewith, so that a closed space is formed between the cotton collector mouth and the bell mouth installed on the shelf, and then compressed gas is introduced into the closed space through the vent to ensure that a large airflow can be generated so that the threading is successful. After completion, the front pressure roller assembly is rotated backward by the pressurizing assembly, so that the shelf is linked and falls down, and there is a gap between the cotton collector mouth and the bell mouth, ensuring smooth exhaust during normal operation.

Description

Technical Field

[0001] The invention relates to the technical field of textile equipment, and in particular to an automatic spinning-in linkage mechanism of a drawing frame. Background Art

[0002] In the existing spinning process, the drawing frame is an intermediate link in the spinning process, which is indispensable and a key process to improve the quality of the yarn. Its function is to effectively control the weight deviation of the sliver, improve the uniformity of the sliver, the straightness and parallelism of the fiber, and make the fibers of different qualities more evenly mixed in the sliver, thus creating conditions for obtaining good yarn.

[0003] The automatic threading of the drawing frame uses compressed air to pass the sliver through the bell mouth for threading, which reduces the operation of manual threading, reduces the requirements for the operator, and also improves production efficiency. At present, in order to obtain a good operating feel, most drawing frames are equipped with automatic threading devices. However, it is generally necessary to remove the cotton collector first, sort the cotton net, tear off a part, then rub the sliver to the tip, put it into the cotton collector, press the threading button, and then reset the cotton collector. The whole threading work is quite cumbersome. There is also a kind of automatic threading that requires a relatively closed space between the mouth of the cotton collector and the bell mouth. However, this closed environment will cause poor exhaust during normal operation, affecting the quality of the cotton sliver. Therefore, it is often necessary to lift the bell mouth shelf by hand, and then put it down to restore it after the threading is completed, which is also very inconvenient. Summary of the invention

[0004] The object of the present invention is to provide an automatic threading linkage mechanism for a drawing frame which is easy to operate and has a high threading success rate, in view of the above-mentioned deficiencies in the prior art.

[0005] The automatic threading linkage mechanism of the drawing machine of the present invention comprises a shelf, a bell-shaped mouth penetrating therethrough is provided on the shelf, the bell-shaped mouth is located below the cotton collector mouth, the shelf is placed on the front pressure roller assembly and the rear pressure roller assembly, the front pressure roller assembly and the rear pressure roller assembly are both arranged on the rear pressure roller seat, and also comprises a pressure assembly, the rear end of the shelf is rotatably arranged on the rear pressure roller assembly, the shelf is placed on the front pressure roller assembly and contacts therewith, the front pressure roller assembly is rotatably arranged on the rear pressure roller seat, the pressure assembly is transmission-connected with the front pressure roller assembly to drive the front pressure roller assembly to rotate forward and lift the front end of the shelf to move upward, so that the inner wall of the bell-shaped mouth is tightly fitted with the cotton collector mouth to form a closed space, and an air vent connected to the closed space is provided on the shelf.

[0006] Furthermore, a guide block is installed below the front end of the shelf, and the guide block is placed on the front pressure roller assembly and in contact with it.

[0007] Furthermore, the guide block is detachably mounted below the front end of the shelf.

[0008] Furthermore, a gasket is provided between the guide block and the shelf.

[0009] Furthermore, the shelf is provided with a threaded hole, the gasket is provided with a first mounting hole passing through it, the guide block is provided with a second mounting hole passing through it, and the screw passes through the second mounting hole and the first mounting hole in sequence and is screwed in the threaded hole.

[0010] Furthermore, the surface where the guide block contacts the front pressure roller assembly is an arc surface.

[0011] Furthermore, the pressure assembly includes a pressure seat, a pressure cylinder and a pressure rod. The pressure seat is arranged on a side of the front pressure roller assembly away from the rear pressure roller assembly. The pressure seat is provided with a rotating hole passing through it. The pressure cylinder is rotatably arranged in the rotating hole. One end of the pressure cylinder extends out of the rotating hole. One end of the pressure rod is arranged at one end of the pressure cylinder, and the other end of the pressure rod is arranged on the front pressure roller assembly.

[0012] Furthermore, the pressurizing assembly includes a pressurizing handle, the pressurizing seat includes two mounting plates vertically arranged with relative spacing, the rotating hole passes through the two mounting plates, the pressurizing cylinder is rotatably arranged on the mounting plate by the rotating hole, one end of the pressurizing handle is fixedly arranged on the outer wall of the pressurizing cylinder and is located between the two mounting plates, and the pressurizing handle is perpendicular to the axial direction of the pressurizing cylinder.

[0013] Furthermore, the pressure rod includes a sleeve, a pressure rod and a spring, one end of the sleeve is installed at one end of the pressure cylinder, and the other end of the sleeve is open, one end of the pressure rod is slidably arranged in the sleeve from the open end, the other end of the pressure rod is transmission connected to the front pressure roller assembly, a limiting portion is fixedly provided on the outer wall of the pressure rod, the spring is sleeved outside the pressure rod, one end of the spring is abutted against the limiting portion, and the other end is abutted against the other end of the sleeve.

[0014] Furthermore, one end of the sleeve is installed on one end of the pressurizing cylinder through a mounting shaft, one end of the mounting shaft is fixed to one end of the pressurizing cylinder, and the axial direction of the mounting shaft is parallel to the axis of the pressurizing cylinder and does not coincide with the central axis of the pressurizing cylinder, and one end of the sleeve is rotatably arranged at the other end of the mounting shaft.

[0015] The present invention provides an automatic threading linkage mechanism of a drawing frame. When automatic threading is required, a pressure-applying component is used to rotate the front pressure roller assembly forward and open it. When the front pressure roller assembly is opened to relieve pressure, a shelf provided with a bell-shaped mouth is lifted up in linkage therewith, so that a closed space is formed between the cotton collector mouth and the bell-shaped mouth installed on the shelf. Then, compressed gas is introduced into the closed space through the vent to ensure that a large airflow can be generated so that threading is successful. After threading is completed, the pressure-applying component is used to rotate the front pressure roller assembly backward to pressurize the front pressure roller assembly. The shelf is then linked to fall down, and a gap is formed between the cotton collector mouth and the bell-shaped mouth, ensuring unobstructed exhaust during normal operation and good quality of the cotton strips. In this way, the shelf can be lifted and dropped in linkage, so as to switch between the threading state and the normal working state. The operation is convenient and the threading success rate is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of an automatic threading linkage mechanism of a drawing frame of the present invention under a normal working state;

[0017] Figure 2 It is a top view of an automatic threading linkage mechanism of a drawing frame of the present invention;

[0018] Figure 3 It is a structural schematic diagram of the threading state of the automatic threading linkage mechanism of a drawing frame of the present invention;

[0019] Figure 4 The present invention is a schematic diagram of a shelf showing the threading state of an automatic threading linkage mechanism of a drawing frame.

[0020] 1. Shelf; 11. Bell mouth; 12. Vent; 13. First rotating shaft; 2. Cotton collector nozzle; 3. Front pressure roller assembly; 31. Second rotating shaft; 4. Rear pressure roller assembly; 5. Rear pressure roller seat; 6. Pressurizing assembly; 61. Pressurizing seat; 611. Rotating hole; 612. Mounting plate; 62. Pressurizing cylinder; 63. Pressurizing rod; 631. Sleeve; 632. Pressurizing rod; 6321. Limiting part; 633. Spring; 64. Pressurizing handle; 65. Mounting shaft; 7. Guide block; 8. Enclosed space; 9. Gasket. DETAILED DESCRIPTION

[0021] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0022] like Figure 1-4As shown, an automatic threading linkage mechanism of a drawing machine of the present invention comprises a shelf 1, a bell mouth 11 penetrating therethrough is provided on the shelf 1, the bell mouth 11 is located below the cotton collector mouth 2, the shelf 1 is placed on the front pressure roller assembly 3 and the rear pressure roller assembly 4, both of which are arranged on the rear pressure roller seat 5, and also comprises a pressurizing assembly 6, the rear end of the shelf 1 is rotatably arranged on the rear pressure roller assembly 4, the shelf is placed on the front pressure roller assembly 3 and contacts therewith, the front pressure roller assembly 3 is rotatably arranged on the rear pressure roller seat 5, the pressurizing assembly 6 is transmission-connected with the front pressure roller assembly 3 to drive the front pressure roller assembly 3 to rotate forward and lift the front end of the shelf 1 to move upward, and make the inner wall of the bell mouth 11 fit tightly with the cotton collector mouth 2 to form a closed space 8, and the shelf 1 is provided with a vent 12 connected to the closed space 8.

[0023] The present invention provides an automatic threading linkage mechanism of a drawing frame. When automatic threading is required, the front pressure roller assembly 3 is rotated forward and opened by using the pressure-applying component 6. When the front pressure roller assembly 3 is opened to relieve pressure, the shelf 1 provided with a bell-shaped mouth 11 is lifted up in linkage therewith, so that a closed space is formed between the cotton collector mouth 2 and the bell-shaped mouth 11 installed on the shelf 1. Then, compressed gas is introduced into the closed space through the vent 12 to ensure that a large airflow can be generated so that threading is successful. After threading is completed, the front pressure roller assembly 3 is rotated backward by using the pressure-applying component 6 to pressurize the front pressure roller assembly 3, so that the shelf 1 is dropped in linkage therewith, and a gap is formed between the cotton collector mouth 2 and the bell-shaped mouth 11, so that the exhaust is unobstructed during normal operation and the quality of the cotton strips is good. In this way, the shelf 1 can be lifted and dropped in linkage, so as to switch between the threading state and the normal working state. The operation is convenient and the threading success rate is high.

[0024] A guide block 7 may be installed below the front end of the shelf 1. The guide block 7 is placed on and in contact with the front roller assembly 3, and the shelf 1 can reach a preset height through the guide block 7. There are many ways to install the guide block 7 below the front end of the shelf 1. In order to facilitate replacement of the guide block 7 according to working conditions, the guide block 7 may be detachably installed below the front end of the shelf 1.

[0025] like Figure 4 As shown, a gasket 9 may be further provided between the guide block 7 and the shelf 1 , and the number of the gaskets 9 may be adjusted according to actual needs so that the height of the shelf 1 can meet the requirements under different working conditions.

[0026] There are many ways to install the guide block 7, shelf 1 and gasket 9, which are not limited here. For example, they can be fixed by screws. The shelf 1 can be provided with a threaded hole (not shown in the figure), the gasket 9 is provided with a first mounting hole passing through it, and the guide block 7 is provided with a second mounting hole passing through it. The screws pass through the second mounting hole and the first mounting hole in turn and are screwed into the threaded holes to fix the guide block 7 and the gasket 9 on the shelf 1.

[0027] The guide block 7 can have various shapes, which are not limited here. In the present embodiment, the surface where the guide block 7 contacts the front pressure roller assembly 3 can be an arc surface, thereby ensuring that when the front pressure roller assembly 3 rotates forward to relieve pressure and opens to a certain angle, it will no longer push the shelf 1 to lift upward, but reach a stable height to prevent the bell mouth 11 from colliding with the cotton collector mouth 2 and damaging the cotton collector mouth 2.

[0028] There are many ways in which the rear end of the shelf 1 can be rotatably disposed on the rear roller assembly 4, for example, the rear end of the shelf 1 can be rotatably disposed on the rear roller assembly 4 via the first rotating shaft 13.

[0029] There are also various ways in which the front pressure roller assembly 3 can be rotatably disposed on the rear pressure roller seat 5 . For example, the front pressure roller assembly 3 can be rotatably disposed on the rear pressure roller seat 5 via the second rotating shaft 31 .

[0030] Furthermore, there are various structures of the pressure component 6, which are not limited here. In the present embodiment, the pressure component 6 may include a pressure seat 61, a pressure cylinder 62 and a pressure rod 63. The pressure seat 61 is arranged on the side of the front pressure roller assembly 3 away from the rear pressure roller assembly 4. The pressure seat 61 is provided with a rotating hole 611 running through it. The pressure cylinder 62 is rotatably arranged in the rotating hole 611. One end of the pressure cylinder 62 extends out of the rotating hole 611. One end of the pressure rod 63 is arranged at one end of the pressure cylinder 62, and the other end of the pressure rod 63 is arranged on the front pressure roller assembly 3. Rotating the pressure cylinder 62 forward drives the pressure rod 63 to move forward, thereby driving the front pressure roller assembly 3 to rotate forward, away from the rear pressure roller assembly 4, and lifting the front end of the shelf 1 placed thereon.

[0031] In order to facilitate the rotation of the pressure cylinder 62, the pressure assembly 6 can also include a pressure handle 64. The pressure seat 61 can include two mounting plates 612 that are vertically arranged with relative intervals. The rotating hole 611 passes through the two mounting plates 612. The pressure cylinder 62 is rotatably set on the mounting plate 612 by the rotating hole 611. One end of the pressure handle 64 is fixed on the outer wall of the pressure cylinder 62 and is located between the two mounting plates 612. The pressure handle 64 is perpendicular to the axial direction of the pressure cylinder 62. By pulling the pressure handle 64 forward and backward, the pressure cylinder 62 can be rotated forward and backward, driving the front pressure roller assembly 3 to rotate forward to apply pressure, or rotate backward to relieve pressure.

[0032] There are many structures of the pressure rod 63. In this embodiment, the pressure rod 63 may include a sleeve 631, a pressure rod 632 and a spring 633. One end of the sleeve 631 is installed at one end of the pressure cylinder 62, and the other end of the sleeve 631 is open. One end of the pressure rod 632 is slidably arranged in the sleeve 631 at the open position, and the other end of the pressure rod 632 is transmission-connected to the front pressure roller assembly 3. A limit portion 6321 is fixedly provided on the outer wall of the pressure rod 632. The spring 633 is sleeved outside the pressure rod 632. One end of the spring 633 is slidably connected to the limit portion 6321. The spring 633 is stretched, and under the action of external force, the pressure rod 632 drives the front pressure roller assembly 3 to rotate forward and away from the rear pressure roller assembly 4. When the drum rotates backward, it drives the sleeve 631 to move toward the front pressure roller assembly 3, the spring 633 is compressed, and under the action of external force, the pressure rod 632 drives the front pressure roller assembly 3 to rotate backward and apply pressure to the rear pressure roller assembly 4.

[0033] There are many ways to install the sleeve 631 at one end of the pressure cylinder 62. In the present embodiment, one end of the sleeve 631 can be installed at one end of the pressure cylinder 62 through the mounting shaft 65. One end of the mounting shaft 65 is fixed to one end of the pressure cylinder 62, and the axial direction of the mounting shaft 65 is parallel to the axis of the pressure cylinder 62 and does not coincide with the central axis of the pressure cylinder 62. One end of the sleeve 631 is rotatably arranged at the other end of the mounting shaft 65. The pressure cylinder 62 rotates, driving the mounting shaft 65 to rotate, driving the sleeve 631 away from or close to the front pressure roller assembly 3.

[0034] The invention is suitable for single-eye and double-eye drawing frames

[0035] For matters not mentioned above, the prior art applies.

[0036] Although some specific embodiments of the present invention have been described in detail through examples, those skilled in the art should understand that the above examples are for illustration only and are not intended to limit the scope of the present invention. Those skilled in the art to which the present invention belongs may make various modifications or supplements to the specific embodiments described or replace them in a similar manner, but they will not deviate from the direction of the present invention or exceed the scope defined by the attached claims. Those skilled in the art should understand that any modifications, equivalent substitutions, improvements, etc. made to the above embodiments based on the technical essence of the present invention should be included in the protection scope of the present invention.

Claims

1. An automatic threading linkage mechanism of a drawing frame, comprising a shelf (1), the shelf (1) being provided with a bell mouth (11) penetrating the shelf (1), the bell mouth (11) being located below a cotton collector mouth (2), the shelf (1) being placed on a front pressure roller assembly (3) and a rear pressure roller assembly (4), the front pressure roller assembly (3) and the rear pressure roller assembly (4) being both arranged on a rear pressure roller seat (5), characterized in that: a pressure assembly (6) is also included, the rear end of the shelf (1) being rotatably arranged on the rear pressure roller assembly (4) via a first rotating shaft (13), the The front end of the shelf (1) is placed on the front pressure roller assembly (3) and is in contact with it. The front pressure roller assembly (3) is rotatably arranged on the rear pressure roller seat (5). The pressure assembly (6) is transmission-connected with the front pressure roller assembly (3) to drive the front pressure roller assembly (3) to rotate forward and lift the front end of the shelf (1) to move upward, so that the inner wall of the bell mouth (11) and the cotton collector mouth (2) are tightly fitted to form a closed space (8). The shelf (1) is provided with a vent (12) connected to the closed space (8); A guide block (7) is installed below the front end of the shelf (1); the guide block (7) is placed on the front pressure roller assembly (3) and is in contact with it.

2. An automatic threading linkage mechanism for a drawing frame as claimed in claim 1, characterized in that: the guide block (7) is detachably mounted below the front end of the shelf (1).

3. An automatic threading linkage mechanism for a drawing frame as claimed in claim 2, characterized in that a gasket (9) is further provided between the guide block (7) and the shelf (1).

4. An automatic threading linkage mechanism for a drawing frame as claimed in claim 3, characterized in that the shelf (1), gasket (9) and guide block (7) are fixedly connected by screws.

5. An automatic threading linkage mechanism for a drawing frame as claimed in any one of claims 1 to 4, characterized in that the contact surface between the guide block (7) and the front pressure roller assembly (3) is an arc surface.

6. An automatic threading linkage mechanism of a drawing machine as described in claim 1, characterized in that: the pressure assembly (6) includes a pressure seat (61), a pressure cylinder (62) and a pressure rod (63), the pressure seat (61) is arranged on the side of the front pressure roller assembly (3) away from the rear pressure roller assembly (4), the pressure seat (61) is provided with a rotating hole (611) passing through it, the pressure cylinder (62) is rotatably arranged in the rotating hole (611), one end of the pressure cylinder (62) protrudes from the rotating hole (611), one end of the pressure rod (63) is arranged at one end of the pressure cylinder (62), and the other end of the pressure rod (63) is arranged on the front pressure roller assembly (3).

7. An automatic threading linkage mechanism of a drawing machine as described in claim 6, characterized in that: the pressurizing component (6) includes a pressurizing handle (64), the pressurizing seat (61) includes two mounting plates (612) arranged vertically with relative spacing, the rotating hole (611) passes through the two mounting plates (612), the pressurizing cylinder (62) is rotatably arranged on the mounting plate (612) by the rotating hole (611), one end of the pressurizing handle (64) is fixedly arranged on the outer wall of the pressurizing cylinder (62) and is located between the two mounting plates (612), and the pressurizing handle (64) is perpendicular to the axial direction of the pressurizing cylinder (62).

8. An automatic threading linkage mechanism of a drawing machine as described in claim 7, characterized in that: the pressure rod (63) includes a sleeve (631), a pressure rod (632) and a spring (633), one end of the sleeve (631) is installed on one end of the pressure cylinder (62), the other end of the sleeve (631) is open, one end of the pressure rod (632) is slidably arranged in the sleeve (631) from the open part, the other end of the pressure rod (632) is connected to the rotating shaft of the front pressure roller assembly (3), a limiting portion (6321) is fixedly provided on the outer wall of the pressure rod (632), the spring (633) is sleeved outside the pressure rod (632), one end of the spring (633) is against the limiting portion (6321), and the other end is against the other end of the sleeve (631).

9. An automatic threading linkage mechanism of a drawing machine as described in claim 8, characterized in that: one end of the sleeve (631) is installed on one end of the pressure cylinder (62) through a mounting shaft (65), one end of the mounting shaft (65) is fixed to one end of the pressure cylinder (62), and the axial direction of the mounting shaft (65) is parallel to the axis of the pressure cylinder (62) and does not coincide with the central axis of the pressure cylinder (62), and one end of the sleeve (631) is rotatably arranged on the other end of the mounting shaft (65).

Images