Automatic doffing mechanism of spinning frame

Abstract

The present invention relates to a spinning frame and discloses an automatic doffing mechanism of the spinning frame, comprising: a base, a first rotating shaft, a first drive, a mounting portion, a scissor frame portion, a second drive, a synchronous belt portion, two movable guide rails, two third drives and two sets of clamps. A synchronous belt portion is provided on the mounting portion, and two sets of clamps are provided on the synchronous belt portion. The two sets of clamps are switched between opening and clamping by sliding the two movable guide rails. When the movable guide rail is in the inner limit position, the clamps are clamped accordingly, and at the same time, the two movable guide rails and the two first fixed guide rails form a circle of the first closed track. At this time, the two sets of clamps maintain clamping and can follow the movement of the synchronous belt, control each movement of the synchronous belt, keep the two sets of clamps on two horizontal parts, and can exchange positions. In this way, by using the two sets of clamps and exchanging positions, empty yarn tubes and spinning spindles can be clamped and placed at the same time, eliminating the intermediate placement rack and corresponding steps.

Description

Technical Field

[0001] The invention relates to a spinning frame, in particular to an automatic doffing mechanism of the spinning frame. Background Art

[0002] The spinning frame is a spinning machine that further drafts the roving spindles produced by the roving frame during the spinning process to produce fine spindles. Generally, the spinning frame is equipped with an automatic doffing mechanism, which cooperates with the circulating flow section and the intermediate storage rack on the spinning frame (from bottom to top: circulating flow section, intermediate storage rack, fine spindle) to replace the empty yarn bobbins with the fine spindles wound on the spinning frame.

[0003] Existing automatic doffing mechanisms generally consist of a base, a first rotating shaft, a first drive, a mounting portion, a scissor frame, a second drive, and multiple air grippers mounted on the mounting portion. The first rotating shaft is connected to the base and rotates about a first horizontal axis. The first drive drives the first rotating shaft to swing. The scissor frame is positioned between the first rotating shaft and the mounting portion. The second drive drives the scissor frame to extend and retract, changing the distance between the mounting portion and the first rotating shaft. The second drive adjusts the height of the air grippers, while the first drive causes the air grippers to swing closer or further away from the spinning frame.

[0004] The specific process is as follows: S1: The circulation part below the spinning frame moves, causing the empty yarn bobbins to move to the rear side of the mounting part. The first rotating shaft, the first drive, the scissor frame, and the second drive move in coordination, and the air grippers pick up the empty yarn bobbins. S2: The first rotating shaft, the first drive, the scissor frame, and the second drive move in coordination, and the air grippers place the picked up empty yarn bobbins on the intermediate placement rack. S3: The first rotating shaft, the first drive, the scissor frame, and the second drive move in coordination, and the air grippers pick up the spinning spindles. S4: The first rotating shaft, the first drive, the scissor frame, and the second drive move in coordination, and the air grippers place the spinning spindles on the circulation part. S5: The first rotating shaft, the first drive, the scissor frame, and the second drive move in coordination, and the air grippers re-grip the yarn bobbins. S6: The first rotating shaft, the first drive, the scissor frame, and the second drive move in coordination, and the air grippers place the empty yarn bobbins on the spinning frame. The entire automatic doffing process of existing automatic doffing mechanisms is relatively cumbersome and time-consuming. Summary of the Invention

[0005] The present application provides an automatic doffing mechanism for a spinning frame, which can solve the problems raised in the background technology.

[0006] In the present application, an automatic doffing mechanism of a spinning frame is provided, comprising:

[0007] base

[0008] A first rotating shaft is connected to the base and rotates around a first horizontal axis.

[0009] a first drive, driving the first rotating shaft to swing;

[0010] The mounting portion has a semicircular first fixed guide rail fixed on both the left and right outer walls;

[0011] a scissor frame portion, disposed between the first rotating shaft and the mounting portion;

[0012] a second drive for driving the scissor frame to partially extend and retract, thereby changing the distance between the mounting portion and the first rotating shaft;

[0013] A synchronous belt portion is provided on the mounting portion, wherein the horizontal portions on both the front and rear sides of the synchronous belt are parallel to the first axis;

[0014] Two straight movable guide rails are respectively connected to the front and rear outer walls of the mounting portion for horizontal sliding along a first direction perpendicular to the first axis;

[0015] Two third drives respectively drive the two movable guide rails to slide; when the two movable guide rails are in the inner limit position, they form a first closed track with the two first fixed guide rails;

[0016] Two sets of clamps are both set on the synchronous belt; the two clamping jaws of each clamp are controlled by its own sliding rod; the inner end of the sliding rod is fixed with a connecting part that slides on the movable guide rail on the same side, and slides along the first direction with the movable guide rail; when the movable guide rail is in the inner limit position, the corresponding clamp is in a clamping state; when the first closed track is formed, after the synchronous belt moves, the two sets of clamps remain in two horizontal parts respectively.

[0017] Furthermore, each third driver includes:

[0018] The sliding plate is connected to the mounting portion for horizontal sliding along the first axis; each of the movable guide rails is fixed with a plurality of connecting strips that penetrate the mounting portion, and each of the connecting strips is provided with a first plug-in portion; the sliding plate is provided with a matching guide groove corresponding to each first plug-in portion, so as to convert the sliding movement of the sliding plate along the first axis into the sliding movement of the corresponding movable guide rail along the first direction;

[0019] The third cylinder drives the sliding plate to slide.

[0020] Furthermore, the mounting portion includes:

[0021] a first mounting portion, wherein the first fixed guide rail, the synchronous belt of the synchronous belt portion, the movable guide rail, and the two sets of the clamps are arranged on the first mounting portion;

[0022] The second mounting part is detachably fixedly connected to the first mounting part; the motor of the synchronous belt part, the scissor frame part and the two third drives are connected to the second mounting part.

[0023] Furthermore, each of the clamps comprises:

[0024] Mounting piece, fixedly connected to the timing belt;

[0025] A clamp body with two clamping jaws, a sliding rod and a connecting portion is detachably fixedly connected to the mounting piece.

[0026] Furthermore, one of the first fixed guide rails is detachably fixed to the outer wall of the mounting portion, and the connecting portion is detachably fixed to the inner end of the sliding rod.

[0027] Furthermore, the connection portion can adjust a fixed position on the sliding rod along the first direction.

[0028] Furthermore, the sliding rod is threaded, and the connecting portion is provided with a matching threaded hole.

[0029] Furthermore, a plurality of supporting legs are fixedly provided on the bottom surface of the first mounting portion.

[0030] In summary, the present application discloses an automatic doffing mechanism for a spinning frame, comprising: a base, a first rotating shaft, a first drive, a mounting portion, a scissor frame portion, a second drive, a timing belt portion, two movable guide rails, two third drives, and two sets of clamps. The timing belt portion is mounted on the mounting portion, and two sets of clamps are mounted on the timing belt portion. The two sets of clamps are respectively switched between opening and clamping by sliding the two movable guide rails. When the movable guide rails are in the inner limit position, the clamps are clamped accordingly, and the two movable guide rails and the two first fixed guide rails form a first closed track. At this point, the two sets of clamps maintain a clamped position and can follow the movement of the timing belt. Each movement of the timing belt is controlled to ensure that the two sets of clamps remain on two horizontal sections and can swap positions. Thus, using the two sets of clamps and the swapping of positions, empty bobbins and spinning spindles can be simultaneously clamped and placed, eliminating the need for an intermediate placement rack and the corresponding steps. This has the beneficial effect of simplifying the entire automatic doffing process, reducing time consumption, and improving efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the background technology, the drawings required for use in the embodiments of the present application or the background technology will be described below.

[0032] Figure 1 It is the front view of the present invention;

[0033] Figure 2 It is a top view on the mounting portion;

[0034] Figure 3 for Figure 2 Cross-sectional view along AA;

[0035] Figure 4 This is a schematic diagram of the installation part from another perspective;

[0036] Figure 5 This is a side view of the mounting portion without the third mounting block;

[0037] Figure 6 for Figure 5 An enlarged schematic diagram of part B;

[0038] Figure 7 This is a schematic diagram of the first installation part and the second installation part after being disassembled;

[0039] Figure 8 A schematic diagram of a first mounting portion having support legs fixed thereto;

[0040] Figure 9 This is a schematic diagram of the installation of a single fixture on the synchronous belt part;

[0041] Figure 10 A schematic diagram of the arrangement of the movable guide rail and the second rotating shaft at the mounting portion;

[0042] Figure 11 Schematic diagram of the clamp body in two states: loose and clamped;

[0043] Figure 12 A partial cross-sectional view of the fixture body.

[0044] In the figure, 1, base; 2, first rotating shaft; 3, first drive; 4, mounting portion; 4a, first mounting seat; 4b, second mounting seat; 4c, first waist-shaped through groove; 4d, first fixed guide rail; 4e, supporting foot; 4f, third mounting block; 4-1, first mounting portion; 4-2, second mounting portion; 5, scissor frame portion; 6, second drive; 7, synchronous belt portion; 7-1, second rotating shaft; 7-2, synchronous wheel; 7-3, synchronous belt; 7-3a, horizontal portion; 7-3b, first mounting block; 7-4, motor; 8, movable guide rail; 8a, connecting strip; 8b, first bearing; 9, third drive; 9- 1. Sliding plate; 9-1a. Guide groove; 9-2. Third cylinder; 10. Clamp; 10-1. Mounting plate; 10-1a. Extension foot; 10-1b. Third bearing; 10-2. Clamp body; 10-2-1. Clamping claw; 10-2-1a. Second waist-shaped through groove; 10-2-2. Sliding rod; 10-2-3. Connecting part; 10-2-3a. Second bearing; 10-2-4. Second mounting block; 10-2-4a. Second plug-in part; 10-2-5. Housing; 11. Bearing seat; 12. Optical axis; 13. Second closed track; 13a. Second fixed guide rail; 14. Fourth bearing. DETAILED DESCRIPTION

[0045] The following is further explained in conjunction with the accompanying drawings. Unless otherwise defined, the technical terms or scientific terms used in this disclosure should have the usual meanings understood by people with ordinary skills in the field to which this disclosure belongs. The "first", "second" and similar words used in this disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprising" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative position relationships. When the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0046] See also Figure 1 An automatic doffing mechanism of a spinning frame includes: a base 1, a first rotating shaft 2, a first drive 3, a mounting portion 4, a scissor frame portion 5, a second drive 6, a synchronous belt portion 7, two movable guide rails 8, two third drives 9 and two sets of clamps 10.

[0047] The arrangement of the first rotating shaft 2, the first drive 3, the scissor frame part 5 and the second drive 6 can refer to the arrangement in the existing automatic yarn dropping mechanism. Specifically, the first rotating shaft 2 is connected to the base 1 by rotating around the horizontal first axis. The first drive 3 drives the first rotating shaft 2 to swing, and a servo motor can be used as the first drive 3. The scissor frame part 5 is arranged between the first rotating shaft 2 and the mounting part 4. The second drive 6 drives the scissor frame part 5 to extend and retract, changing the distance between the mounting part 4 and the first rotating shaft 2, and a rodless cylinder can be used as the second drive 6. That is, the height of the mounting part 4 is adjusted by the second drive 6, and the mounting part 4 is swung by the first drive 3, approaching or moving away from the spinning frame.

[0048] Please refer to 2. Figure 3 and Figure 10The synchronous belt portion 7 is provided on the mounting portion 4. Specifically, a first mounting seat 4a is welded and fixed on one side at the left and right sides of the mounting portion 4, and a plurality of first waist-shaped through slots 4c are provided on the other side, which are releasably fixedly connected to the second mounting seat 4b with screws. The synchronous belt portion 7 includes two second rotating shafts 7-1, four synchronous pulleys 7-2, two synchronous belts 7-3, and a motor 7-4. One second rotating shaft 7-1 is rotatably connected to the first mounting seat 4a via a bearing seat 11, and the other is correspondingly rotatably connected to the second mounting seat 4b. The four synchronous pulleys 7-2 are fixedly connected to the ends of the two second rotating shafts 7-1. The two synchronous belts 7-3 are tensioned between the two synchronous pulleys 7-2, one above and one below (for ease of illustration, the teeth on the synchronous pulleys 7-2 and the synchronous belts 7-3 are not shown in the drawings). The motor 7-4 is fixed to the mounting portion 4 and drives the second rotating shaft 7-1 on the first mounting seat 4a to rotate.

[0049] The four synchronous wheels 7-2 have the same size, so that the horizontal parts 7-3a on the front and rear sides of the synchronous belt 7-3 are parallel to the first axis.

[0050] See also Figure 4 and Figure 10 The left and right outer walls of the mounting portion 4 are both fixed with a semicircular first fixed guide rail 4d.

[0051] Two straight movable guide rails 8 are respectively connected to the front and rear outer walls of the mounting portion 4 for horizontal sliding along a first direction perpendicular to the first axis. Specifically, a plurality of first notches are formed on the front and rear outer walls of the mounting portion 4, and connecting strips 8a are fixed to the movable guide rails 8 to match the shape of the first notches.

[0052] See also Figure 2 、 Figure 3 and Figure 7 The two third drives 9 respectively drive the two movable guide rails 8 to slide. A pneumatic cylinder can be used to drive the movable guide rails 8 to slide. The sliding of the movable guide rails 8 is subsequently used to switch the clamp 10 between opening and clamping. The overall sliding distance is not large. Directly using the telescopic rod of the pneumatic cylinder to drive the movable guide rails 8 makes it difficult to control the stroke.

[0053] Optionally, each third drive 9 includes: a sliding plate 9-1 and a third cylinder 9-2. The sliding plate 9-1 can be connected to the mounting portion 4 by sliding horizontally along the first axis through the optical axis 12. A first plug-in part is provided on each connecting bar 8a of the movable guide rail 8, which can be specifically: the first plug-in part adopts a first bearing 8b and is connected to the connecting bar 8a through a bolt, a nut and a stepped sleeve. The sliding plate 9-1 is provided with a matching guide groove 9-1a corresponding to each first plug-in part, which converts its own sliding along the first axis into the sliding of the corresponding movable guide rail 8 along the first direction. The cylinder body of the third cylinder 9-2 is fixed to the mounting portion 4, and the piston rod is connected to the sliding plate 9-1, driving the sliding plate 9-1 to slide.

[0054] See also Figure 2 and Figure 3 When the two movable guide rails 8 are in the inner limit position, they form a circle of first closed track with the two first fixed guide rails 4d, that is, they are connected end to end, and the connecting part 10-2-3 can subsequently circulate.

[0055] The two sets of clamps 10 are both arranged on the synchronous belt 7 - 3 .

[0056] See also Figure 9 and Figure 11 Optionally, each clamp 10 includes: a mounting plate 10-1 and a clamp body 10-2. The clamp body 10-2 has two clamping claws 10-2-1, a sliding rod 10-2-2 and a connecting portion 10-2-3. The mounting plate 10-1 is fixedly connected to the synchronous belt 7-3. Specifically, it can be: a plurality of first mounting blocks 7-3b are fixedly connected to each of the two synchronous belts 7-3 and aligned one by one, and one mounting plate 10-1 is fixedly connected to the two aligned first mounting blocks 7-3b by screws. Compared with directly fixing the clamp 10 to the synchronous belt 7-3, this makes it more convenient to disassemble and install the clamp 10.

[0057] The two clamping jaws 10-2-1 of the clamp 10 are controlled by their own sliding rod 10-2-2. The inner end of the sliding rod 10-2-2 is fixedly provided with a connecting portion 10-2-3 that slides on the movable guide rail 8 on the same side and slides along the first direction with the movable guide rail 8. Specifically, the connecting portion 10-2-3 is provided with two second bearings 10-2-3a as rollers, which are inserted into the movable guide rail 8. When the movable guide rail 8 slides in the first direction, the connecting portion 10-2-3 will not separate from the movable guide rail 8, thereby driving the sliding rod 10-2-2 to slide in the first direction, thereby changing the state of the two clamping jaws 10-2-1.

[0058] See also Figure 5 and Figure 6 Furthermore, two extension legs 10-1a can be provided on the mounting plate 10-1, and two third bearings 10-1b are provided as rollers with reference to the connecting portion 10-2-3. Accordingly, two second closed rails 13 are fixed on the mounting portion 4.

[0059] See also Figure 11 and Figure 12When the movable guide rail 8 is in the inner limit position, the corresponding clamp 10 is in the clamping state. The specific structure of the clamp 10 can be: the clamp body 10-2 includes two clamping claws 10-2-1, a sliding rod 10-2-2, a connecting part 10-2-3, a concave second mounting block 10-2-4 and a concave shell 10-2-5. The two clamping jaws 10-2-1 are hinged to the shell 10-2-5, separated by the hinge point, one side is used for clamping, and the other side is bent and has a second waist-shaped groove 10-2-1a. During the swinging process of the clamping jaw 10-2-1, the two second waist-shaped grooves 10-2-1a remain partially overlapped; the second mounting block 10-2-4 is provided with a protrusion, and the inner wall of the shell 10-2-5 is provided with a sliding groove, so that the second mounting block 10-2-4 is slidably connected to the shell 10-2-5, and at the same time, a second plug-in part 10-2-4a is fixed on the second mounting block 10-2-4, and the second plug-in part 10-2-4a enters the overlapping part of the two second waist-shaped grooves 10-2-1a; one end of the sliding rod 10-2-2 is connected to the second mounting block 10-2-4, and the other end passes through the shell 10-2-5 for connection with the connecting part 10-2-3.

[0060] Initially, the mounting portion 4 is in the lower position, and the two sets of clamps 10 are both open and located on the two horizontal portions 7-3a of the timing belt 7-3, aligned front to back. For ease of description, they are marked as the front clamp group and the rear clamp group.

[0061] S1, the circulating flow part under the spinning frame moves, so that the empty yarn bobbin moves to the rear side of the mounting part 4, and the first rotating shaft 2, the first drive 3, the scissor frame part 5 and the second drive 6 cooperate to move, so that the rear clamp group cooperates with an empty yarn bobbin in turn, and the two third drives 9 move together, so that the two sets of clamps 10 are converted to clamping, clamping these empty yarn bobbins and taking these empty yarn bobbins out of the circulating flow part; the two sets of clamps 10 are in the clamping state, and the two movable guide rails 8 and the two first fixed guide rails 4d form a first closed track. At this time, the synchronous belt 7-3 moves, and the rear clamp group drives the empty yarn bobbin into the position of the original front clamp group, and the front clamp group enters the position of the original rear clamp group, that is, after the synchronous belt 7-3 moves, the two sets of clamps 10 remain in the two horizontal parts 7-3a respectively, which is equivalent to changing the front and rear positions, and the corresponding third drive 9 converts the new rear clamp group to open;

[0062] S2, the first rotating shaft 2, the first drive 3, the scissor frame part 5 and the second drive 6 move in coordination, so that the mounting part 4 corresponds to the spindle that needs to be replaced on the spinning frame, and the corresponding third drive 9 converts the new rear clamp group into a clamping position, clamps the bobbins of the spinning spindles that need to be replaced, and takes these spindles out of the spinning frame; the synchronous belt 7-3 moves, and the rear clamp group drives the empty bobbin into the original position of the front clamp group, and the front clamp group enters the original position of the rear clamp group, that is, the empty bobbin returns to the rear position;

[0063] S3, the first rotating shaft 2, the first drive 3, the scissor frame part 5 and the second drive 6 move in coordination to place the empty bobbin into the spinning frame;

[0064] S4, the synchronous belt 7-3 moves, the rear clamp group drives the empty bobbin into the original position of the front clamp group, and the front clamp group enters the original position of the rear clamp group, that is, the spinning spindle returns to the rear position;

[0065] S5, the first rotating shaft 2, the first drive 3, the scissor frame part 5 and the second drive 6 move in coordination to place the spun spindle into the circulating flow part.

[0066] Optionally, the mounting portion 4 includes a first mounting portion 4-1 and a second mounting portion 4-2. The first fixed guide rail 4d, the synchronous belt 7-3 of the synchronous belt portion 7, the movable guide rail 8, and two sets of clamps 10 are disposed on the first mounting portion 4-1. The second mounting portion 4-2 is detachably fixedly connected to the first mounting portion 4-1. The motor 7-4 of the synchronous belt portion 7 (a bevel gear set may be provided between the motor 7-4 and one of the rotating shafts), the scissor frame portion 5, and the two third drive units 9 are connected to the second mounting portion 4-2. This facilitates disassembly of the mounting portion 4, facilitating maintenance and assembly.

[0067] Furthermore, a plurality of supporting feet 4e are fixedly provided on the bottom surface of the first mounting portion 4-1. In this way, the disassembled first mounting portion 4-1 can be directly placed on the ground.

[0068] Optionally, in conjunction with the aforementioned configuration of "each clamp 10 comprising a mounting plate 10-1 and a clamp body 10-2," one of the first fixed guide rails 4d may be removably secured to the outer wall of the mounting portion 4. Specifically, a semicircular third mounting block 4f may be removably secured to the first mounting seat 4a via a magnet, with the corresponding first fixed guide rail 4d being secured to the third mounting block 4f. In conjunction with the two second enclosed rails 13, the second fixed guide rails 13a of the two second enclosed rails 13 are also secured to the third mounting block 4f. The connecting portion 10-2-3 may be removably secured to the inner end of the sliding rod 10-2-2. In this way, when installing the clamp body 10-2, the movable track is in the inner limit position, the connecting part 10-2-3 and the sliding rod 10-2-2 are disassembled, the third mounting block 4f is removed, the connecting part 10-2-3 is placed in the movable track, the clamp body 10-2 is installed to the mounting plate 10-1, and the sliding rod 10-2-2 and the connecting part 10-2-3 are connected.

[0069] Furthermore, the connection portion 10-2-3 can be adjusted along the first direction to its fixed position on the sliding rod 10-2-2. In this way, the connection portion 10-2-3 can be manually adjusted to adjust the specific clamping position of the two clamping jaws 10-2-1 on each clamp 10, thereby ensuring that all empty bobbins and spun spindles can be clamped and fixed.

[0070] Furthermore, the sliding rod 10-2-2 is threaded, and the connecting portion 10-2-3 is provided with a matching threaded hole. That is, the sliding rod 10-2-2 can slide and move with the second mounting block 10-2-4 through the fourth bearing 14, and can also rotate relative to the second mounting block 10-2-4. Rotating the sliding rod 10-2-2 can drive the connecting portion 10-2-3 to move in the first direction, thereby adjusting its fixed position on the sliding rod 10-2-2.

Claims

1. An automatic doffing mechanism for a spinning frame, characterized in that: include: Base (1) A first rotating shaft (2) is connected to the base (1) and is rotatable about a first horizontal axis. A first drive (3) drives the first rotating shaft (2) to swing; The mounting portion (4) has a first semicircular fixed guide rail (4d) fixedly provided on both the left and right outer walls; A scissor frame portion (5) is provided between the first rotating shaft (2) and the mounting portion (4); A second drive (6) drives the scissor frame portion (5) to extend and retract, thereby changing the distance between the mounting portion (4) and the first rotating shaft (2); A synchronous belt portion (7) is provided on the mounting portion (4), and horizontal portions (7-3a) on both the front and rear sides of the synchronous belt (7-3) are parallel to the first axis; Two straight movable guide rails (8) are respectively connected to the front and rear outer walls of the mounting portion (4) in a horizontally sliding manner along a first direction perpendicular to the first axis; Two third drives (9) respectively drive the two movable guide rails (8) to slide; when the two movable guide rails (8) are in the inner limit position, they form a circle of first closed track with the two first fixed guide rails (4d); Two groups of clamps (10) are both arranged on the synchronous belt (7-3); the two clamping claws (10-2-1) of each clamp (10) are controlled by its own sliding rod (10-2-2); the inner end of the sliding rod (10-2-2) is fixed with a connecting part (10-2-3) that slides on the movable guide rail (8) on the same side, and the sliding rod (10-2-2) slides along the first direction together with the movable guide rail (8); when the movable guide rail (8) is in the inner limit position, the corresponding clamp (10) is in a clamping state; when the first closed track is formed, after the synchronous belt (7-3) moves, the two groups of clamps (10) remain in the two horizontal parts (7-3a) respectively.

2. The automatic doffing mechanism of a spinning frame according to claim 1, characterized in that: Each third drive (9) comprises: The sliding plate (9-1) is connected to the mounting portion (4) by sliding horizontally along a first axis; each movable guide rail (8) is fixed with a plurality of connecting bars (8a) that penetrate into the mounting portion (4), and each connecting bar (8a) is provided with a first plug-in portion; the sliding plate (9-1) is provided with a matching guide groove (9-1a) corresponding to each first plug-in portion, so as to convert its own sliding along the first axis into sliding of the corresponding movable guide rail (8) along the first direction; The third cylinder (9-2) drives the sliding plate (9-1) to slide.

3. The automatic doffing mechanism of a spinning frame according to claim 1, characterized in that: The mounting portion (4) comprises: A first installation portion (4-1), wherein the first fixed guide rail (4d), the synchronous belt (7-3) of the synchronous belt portion (7), the movable guide rail (8) and two sets of the clamps (10) are arranged on the first installation portion (4-1); The second mounting part (4-2) is detachably fixedly connected to the first mounting part (4-1); the motor (7-4) of the synchronous belt part (7), the scissor frame part (5) and the two third drives (9) are connected to the second mounting part (4-2).

4. The automatic doffing mechanism of a spinning frame according to claim 1, characterized in that: Each of the clamps (10) comprises: A mounting plate (10-1) is fixedly connected to the synchronous belt (7-3); A clamp body (10-2) having two clamping claws (10-2-1), a sliding rod (10-2-2) and a connecting portion (10-2-3) is detachably fixedly connected to the mounting plate (10-1).

5. The automatic doffing mechanism of a spinning frame according to claim 4, characterized in that: One of the first fixed guide rails (4d) is detachably fixed to the outer wall of the mounting portion (4), and the connecting portion (10-2-3) is detachably fixed to the inner end of the sliding rod (10-2-2).

6. The automatic doffing mechanism of a spinning frame according to claim 5, characterized in that: The connection portion (10-2-3) can adjust a fixed position on the sliding rod (10-2-2) along a first direction.

7. The automatic doffing mechanism of a spinning frame according to claim 1, characterized in that: The sliding rod (10-2-2) is provided with threads, and the connecting portion (10-2-3) is provided with a matching threaded hole.

8. The automatic doffing mechanism of a spinning frame according to claim 3, characterized in that: A plurality of supporting legs (4e) are fixedly provided on the bottom surface of the first mounting portion (4-1).

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