Desizing device for polyester-cotton fabric

Abstract

The desizing device comprises a box body, a conveying roller and a driving part are arranged on the box body, a plurality of cloth guide rollers and rollers are arranged in the box body, a cloth swinging assembly is arranged in the box body and comprises a sliding rod and a cloth swinging rod, the sliding rod is installed on the inner side wall of the box body in a sliding mode, and the cloth swinging rod is arranged on the sliding rod. The sliding rod and the cloth guide roller are vertically distributed, the cloth swinging rod is arranged in the box body and connected with the sliding rod, and a rotating piece is arranged on the box body; fabric is conveyed by the conveying roller and sequentially wound around the upper cloth guide roller and the lower cloth guide roller to be subjected to sizing washing and roller cloth rolling, the rotating piece drives the sliding rod to move in a reciprocating mode, the sliding rod drives the cloth swinging rod to move to flap the fabric, sizing agent on the fabric makes good contact with desizing liquid, and the fabric desizing device has the good fabric desizing effect.

Description

Technical Field

[0001] The present application relates to the field of polyester-cotton fabric pre-treatment devices, and in particular to a desizing device for polyester-cotton fabrics. Background Art

[0002] The short-process pretreatment and whitening process of polyester-cotton fabrics is to add whitening agent into the desizing process to simplify the process. The equipment commonly used in the desizing process is the desizing machine, which is a device that effectively removes the sizing on the fabric by chemical or mechanical methods.

[0003] In the related art, reference can be made to the utility model patent with authorization announcement number CN219793334U, which discloses a desizing machine chassis trough, including a trough body, an upper cloth guide roller and a lower cloth guide roller, the lower cloth guide roller is arranged below the upper cloth guide roller, and also includes a heating pipe, the heating pipe includes a circulation inlet, a spiral portion, a wave portion and a circulation outlet, a heat transfer medium is introduced into the heating pipe through the circulation inlet, the spiral portion is arranged on the bottom wall of the trough body and is located below the lower cloth guide roller, the wave portion is arranged on the two opposite inner side walls of the trough body and bypasses the lower cloth guide roller in a wave shape, and the heating pipe outputs the heat transfer medium through the circulation outlet; the heating pipe ensures the uniformity of heating, controls the temperature within a relatively stable range, and ensures the desizing effect.

[0004] In the above-mentioned related technologies, during the desizing process, the fabric is desized by only using a guide roller immersion method. The contact between the fabric and the desizing liquid is poor, the desizing effect is poor, the fabric requires a long desizing time, and the desizing efficiency is low. Summary of the invention

[0005] In order to solve the problem that the desizing effect of guide roller immersion is poor and the desizing efficiency is low, the present application provides a desizing device for polyester-cotton fabrics.

[0006] The present application provides a desizing device for polyester-cotton fabrics adopts the following technical solution: A desizing device for polyester-cotton fabrics comprises a box body, wherein the box body is provided with through holes on two opposite side surfaces, the box body is provided with transport rollers at the through holes, a plurality of cloth guide rollers are provided in the box body, a driving member for driving the cloth guide rollers to rotate is provided on the outer side of the box body, the plurality of cloth guide rollers are parallel to each other and staggeredly distributed up and down, the box body is provided with a roller on the upper side of the cloth guide roller, a cloth swing assembly is provided in the box body, the cloth swing assembly comprises a sliding rod and a cloth swing rod, the sliding rod is slidably installed on the inner side wall of the box body and is located between the cloth guide rollers on the upper and lower sides, the sliding rod and the cloth guide roller are distributed perpendicular to each other and slide along the transport direction of the fabric, the cloth swing rod is arranged in the box body and is distributed parallel to the cloth guide roller, the cloth swing rod is connected to the sliding rod, and a rotating member for driving the sliding rod to slide back and forth is provided on the box body.

[0007] By adopting the above technical scheme, the fabric is transported by the transport roller, and is sequentially wrapped around the upper and lower cloth guide rollers for sizing and washing, the rollers are used to nip the cloth, the rotating part drives the sliding rod to move back and forth, the sliding rod drives the swing rod to move to beat the fabric, the sizing material on the fabric is in good contact with the desizing liquid, and the desizing effect on the fabric is better.

[0008] Optionally, the rotating member includes a rotating disk and a connecting rod, a sliding plate is slidably installed on the box body, the sliding plate is connected to the sliding rod, the rotating disk is rotatably installed on the outer wall of the box body, one end of the connecting rod is rotatably installed on a side surface of the rotating disk, the end of the connecting rod facing away from the rotating disk is rotatably connected to a side surface of the sliding plate, and the rotating disk is connected to the driving member.

[0009] By adopting the above technical solution, the driving member drives the rotating disk to rotate, the rotating disk drives the connecting rod to move, the connecting rod drives the sliding plate and then drives the sliding rod to reciprocate, and the operation of driving the sliding rod is more convenient.

[0010] Optionally, the driving member includes a motor and a pulley, the pulley is coaxial with the cloth guide roller and fixedly connected, the motor is arranged on the outer wall of the box, the pulley is connected to the output shaft of the motor, the pulleys on the cloth guide roller are connected by a first belt transmission, and the pulley is connected to the rotating disk by a second belt transmission.

[0011] By adopting the above technical solution, the motor drives the pulley to rotate, and the pulley drives each cloth guide roller to rotate through the first belt transmission. At the same time, the pulley drives the rotating disk to rotate through the second belt. While the cloth guide roller transports the fabric, it drives the sliding rod to move and then drives the swing rod to beat the fabric synchronously, and the driving operation is convenient.

[0012] Optionally, a first screw is rotatably installed on one side of the rotating disk, the first screw is distributed along the radial direction of the rotating disk, a first slider is slidably installed on one side of the rotating disk along the radial direction of the rotating disk, the first slider is threadedly connected to the first screw, and one end of the connecting rod is rotatably connected to a side surface of the first slider.

[0013] By adopting the above technical solution, the first screw is rotated to drive the first slider to slide, the position of the first slider is adjusted to thereby adjust the position of the connecting rod on the rotating disk, thereby adjusting the rotation radius of one end of the connecting rod, adjusting the reciprocating movement distance of the sliding rod to thereby adjust the swing amplitude of the swing rod, which is suitable for beating fabrics of different materials.

[0014] Optionally, a roller frame is slidably installed in the box body, both ends of the roller are rotatably installed on the roller frame, a second screw is rotatably installed on one side of the roller frame, and the second screw is threadedly connected to the box body.

[0015] By adopting the above technical solution, the second screw is rotated to adjust the position of the roller frame, thereby adjusting the relative position between the roller and the cloth guide roller, which is suitable for squeezing fabrics of different thicknesses.

[0016] Optionally, two manipulator rods are provided and located at two opposite sides of the fabric, and a plurality of groups of manipulator rods are provided and are evenly arranged along the length direction of the sliding rod.

[0017] By adopting the above technical solution, when the sliding rod moves to manipulate, the manipulation rod on one side pushes the fabric to move, and when the sliding rod moves to manipulate in the opposite direction, the manipulation rod on the other side of the fabric pushes the fabric to move. The fabric is pushed and manipulated by the manipulation rods on both sides, and the manipulation effect is better.

[0018] Optionally, a third screw is rotatably installed on the sliding rod along the length direction of the sliding rod, a sliding groove is provided on the sliding rod, a sliding frame is slidably installed on the sliding rod at the sliding groove, the two ends of the swing rod are respectively rotatably connected to the sliding frames on both sides, the third screw is provided with two opposite thread sections, and the sliding frames at one end of two adjacent swing rods are threadedly connected to the third screw at two opposite thread sections respectively.

[0019] By adopting the above technical solution, the third screw is rotated to drive two adjacent sliding frames to slide in opposite directions, thereby adjusting the distance between two adjacent manipulation rods, which is suitable for manipulation of fabrics of different thicknesses.

[0020] Optionally, the sliding frame includes a sliding plate and a connecting plate. The sliding plate is slidably installed in the sliding groove of the sliding rod and is threadedly connected to the third screw rod. A connecting rod is slidably installed on the sliding plate. The connecting plate is arranged at one end of the connecting rod. One end of the swing rod is rotatably connected to the connecting plate, and a spring is sleeved on the connecting rod.

[0021] By adopting the above technical solution, when the cloth-moving rod pushes the fabric to move, the connecting plate is driven to slide, and then the connecting rod is driven to slide, and the cloth-moving rod and the fabric are elastically pressed against each other, thereby reducing the probability of the cloth-moving rod damaging the fabric.

[0022] Optionally, heating plates are provided on the inner side wall and the bottom wall of the box.

[0023] By adopting the above technical solution, the desizing liquid in the box is heated, and the desizing effect is better.

[0024] Optionally, the box body is provided with an observation port at the top, and a cover is rotatably installed on the box body at the observation port.

[0025] By adopting the above technical solution, the transportation situation of the fabric in the box can be observed from the observation port, and the box can be processed when the cover is opened.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. The fabric is transported by the transport roller, and then it is washed by the upper and lower cloth guide rollers in turn. The rollers are used to squeeze the fabric, and the rotating part drives the sliding rod to move back and forth. The sliding rod drives the swing rod to move and beat the fabric. The sizing material on the fabric is in good contact with the desizing liquid, and the desizing effect on the fabric is good. 2. Turn the second screw to adjust the position of the roller frame, and then adjust the relative position between the roller and the cloth guide roller, which is suitable for squeezing fabrics of different thicknesses; 3. Rotate the third screw rod to drive the two adjacent sliding frames to slide in opposite directions, thereby adjusting the distance between the two adjacent swing rods, which is suitable for swinging fabrics of different thicknesses. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a three-dimensional structural schematic diagram of this application.

[0028] Figure 2 It is a cross-sectional view of the box body of the present application along the fabric transport direction.

[0029] Figure 3 It is a three-dimensional structural schematic diagram of the roller and the manipulation assembly of the present application.

[0030] Figure 4 It is a schematic diagram of the enlarged three-dimensional structure of part B of this application.

[0031] Figure 5 It is a schematic diagram of the enlarged three-dimensional structure of part A of the present application.

[0032] Figure 6 It is a three-dimensional structural schematic diagram of a rotating frame at one end of the manipulation rod of the present application.

[0033] Those skilled in the art will appreciate that elements in the drawings are illustrated for simplicity and clarity and are not necessarily drawn to scale. For example, the size and position of some elements in the drawings may be exaggerated relative to other elements to help improve understanding of embodiments of the present invention.

[0034] 1. Box body; 11. Transport roller; 12. Cloth guide roller; 13. Roller; 131. Insert block; 14. Slide rail; 15. Roller frame; 151. Mounting groove; 152. Spring; 16. Second screw; 17. Slide plate; 171. Connecting plate; 18. Through groove; 19. Heating plate; 2. Driving member; 21. Motor; 22. Pulley; 23. First belt; 24. Second belt; 3. Slide rod; 31. Third screw; 32. Slide groove; 33. Slide frame; 331. Slide plate; 332. Connecting plate; 333. Connecting rod; 4. Manipulator rod; 5. Rotating member; 51. Rotating disk; 511. First screw; 52. Connecting rod; 53. First slider; 6. Cover. DETAILED DESCRIPTION

[0035] The present application is further described in detail below in conjunction with the accompanying drawings.

[0036] The present application embodiment discloses a desizing device for polyester-cotton fabric, referring to Figure 1 and Figure 2 , including a box body 1, wherein through holes are opened on two opposite side surfaces of the box body 1 in the length direction, a transport roller 11 is arranged on the outer wall of the box body 1 at the through hole, a plurality of cloth guide rollers 12 are arranged in the box body 1, the cloth guide rollers 12 are distributed along the width direction of the box body 1, the plurality of cloth guide rollers 12 are parallel to each other and staggered up and down, a roller 13 parallel to the cloth guide roller 12 is arranged on the upper side of the box body 1, the fabric is transported by the transport roller 11, and is sequentially wound around the upper and lower cloth guide rollers 12 for pulping, and the roller 13 is used to press the fabric.

[0037] Reference Figure 1 and Figure 2 A driving member 2 is arranged on the outside of the box body 1, and the driving member 2 includes a motor 21 and a pulley 22. The pulley 22 is rotatably installed on the outer wall of the box body 1, and the pulley 22 is coaxial with and fixedly connected to the cloth guide roller 12. The motor 21 is arranged on the outer wall of the box body 1, and the pulley 22 is connected to the output shaft of the motor 21. The pulleys 22 on adjacent cloth guide rollers 12 are connected through a first belt 23. The motor 21 drives the pulley 22 to rotate, and the pulley 22 drives the cloth guide rollers 12 to rotate through the first belt 23 to transport the fabric.

[0038] Reference Figure 2 and Figure 3A cloth-moving assembly is arranged in the box body 1, and the cloth-moving assembly includes a sliding rod 3 and a cloth-moving rod 4. Slide rails 14 are arranged at the two opposite inner side walls of the box body 1 along the length direction. The sliding rails 14 are arranged along the length direction of the box body 1. The sliding rod 3 is slidably installed on the sliding rails 14. The sliding rod 3 is located between the cloth-guide rollers 12 on the upper and lower sides. The cloth-moving rod 4 is arranged in the box body 1 and is distributed parallel to the cloth-guide rollers 12. The two ends of the cloth-moving rod 4 are respectively connected with the sliding rods 3 on both sides. A rotating part 5 is arranged on the box body 1. The rotating part 5 drives the sliding rod 3 to move back and forth. The sliding rod 3 drives the cloth-moving rod 4 to move to beat the fabric. The sizing material on the fabric has good contact with the desizing liquid, and the desizing effect on the fabric is good.

[0039] Reference Figure 2 and Figure 3 A roller frame 15 is installed at the top of the box body 1 for sliding movement in the vertical direction. Both ends of the roller 13 are rotatably installed on the roller frame 15. A second screw 16 is installed on the upper side of the roller frame 15 for vertical rotation. The second screw 16 is threadedly connected to the box body 1. The upper end of the second screw 16 is located outside the box body 1. The second screw 16 is rotated to adjust the position of the roller frame 15, and then the relative position between the roller 13 and the cloth guide roller 12 is adjusted. It is suitable for squeezing fabrics of different thicknesses.

[0040] Reference Figure 3 and Figure 4 A mounting groove 151 is provided on the roller frame 15, and an insert block 131 is provided at one end of the roller 13. The insert block 131 is rotatably connected to the roller 13, and the insert block 131 is slidably installed in the mounting groove 151 of the roller frame 15 along the vertical direction. Springs 152 are provided at the upper and lower sides of the insert block 131, and the springs 152 on both sides are respectively connected to the bottom wall and the top wall of the roller frame 15 located at the mounting groove 151. When the roller 13 presses the fabric, the insert block 131 is pushed to compress the spring 152 on one side, and the spring 152 on the other side is stretched, so that the fabrics are elastically pressed to reduce the probability of damaging the fabrics.

[0041] Reference Figure 3 and Figure 5The rotating member 5 includes a rotating disk 51 and a connecting rod 52. A sliding plate 17 is slidably installed on the outer wall of the box body 1. The sliding plate 17 is connected to the sliding rod 3 through a connecting plate 171. A through slot 18 for the connecting plate 171 to slide is provided on the side wall of the box body 1. The rotating disk 51 is rotatably installed on the outer wall of the box body 1 and is located on one side of the sliding plate 17. One end of the connecting rod 52 is rotatably installed on one side of the rotating disk 51. The end of the connecting rod 52 away from the rotating disk 51 is rotatably connected to one side of the sliding plate 17. The pulley 22 is connected to the rotating disk 51 through the second belt 24. The rotation of the pulley 22 drives the rotating disk 51 to rotate through the second belt 24. The rotating disk 51 drives the connecting rod 52 to move. The connecting rod 52 drives the sliding plate 17 and then drives the sliding rod 3 to reciprocate. When the fabric guide roller 12 transports the fabric, it drives the sliding rod 3 to move and then drives the swing rod 4 to beat the fabric synchronously.

[0042] Reference Figure 5 A first screw rod 511 is rotatably installed on one side of the rotating disk 51, and the first screw rod 511 is distributed along the radial direction of the rotating disk 51. A first slider 53 is slidably installed on one side of the rotating disk 51 along the radial direction of the rotating disk 51. The first slider 53 is threadedly connected to the first screw rod 511, and one end of the connecting rod 52 is rotatably connected to a side surface of the first slider 53. The first screw rod 511 is rotated to drive the first slider 53 to slide, and the position of the first slider 53 on the rotating disk 51 is adjusted, thereby adjusting the rotation radius of one end of the connecting rod 52, adjusting the reciprocating movement distance of the sliding rod 3, and thereby adjusting the swing amplitude of the swing rod 4, which is suitable for beating fabrics of different materials.

[0043] Reference Figure 6 There are two manipulator rods 4 located on opposite sides of the fabric, and there are several groups of manipulator rods 4 evenly arranged along the length direction of the sliding rod 3. When the sliding rod 3 moves, the manipulator rod 4 on one side pushes the fabric to move. When the sliding rod 3 moves in the opposite direction, the manipulator rod 4 on the other side of the fabric pushes the fabric to move.

[0044] Reference Figure 3 and Figure 6A third screw rod 31 is rotatably mounted on the sliding rod 3 along the length direction of the sliding rod 3. A sliding groove 32 is provided on the side surface of the sliding rod 3 away from the slide rail 14. The sliding groove 32 is distributed in the horizontal direction. A sliding frame 33 is slidably mounted on the sliding groove 32 of the sliding rod 3. The sliding frame 33 includes a sliding plate 331 and a connecting plate 332. The sliding plate 331 is slidably mounted on the sliding groove 32 of the sliding rod 3. Two opposite thread segments are arranged on the third screw rod 31. The thread segments are provided with a plurality of groups and Corresponding to the position of the swing rod 4, the sliding plates 331 at one end of the two adjacent swing rods 4 are threadedly connected with the third screw rod 31 at two opposite threaded sections respectively. A connecting rod 333 is slidably installed on the sliding plate 331 along the horizontal direction. The connecting plate 332 is arranged at one end of the connecting rod 333. The connecting plate 332 is L-shaped. One end of the swing rod 4 is rotatably connected to the connecting plate 332. Springs 152 are sleeved on both sides of the connecting plate 332 on the connecting rod 333.

[0045] Rotating the third screw rod 31 drives the two adjacent sliding frames 33 to slide in opposite directions, thereby adjusting the distance between the two adjacent manipulation rods 4, which is suitable for manipulating fabrics of different thicknesses; when the manipulation rod 4 pushes the fabric to be manipulated, it drives the connecting plate 332 and then drives the connecting rod 333 to slide, at this time, the spring 152 on one side is compressed and the spring 152 on the other side is stretched, the manipulation rod 4 and the fabric are elastically pressed against each other, reducing the probability of the manipulation rod 4 damaging the fabric.

[0046] Reference Figure 1 and Figure 2 The box body 1 is provided with heating plates 19 at the inner side wall and the bottom wall to heat the desizing liquid in the box body 1, and the desizing effect is better; the box body 1 is provided with an observation port at the top, and the box body 1 is rotatably installed with a cover 6 at the observation port, and the fabric transportation situation in the box body 1 can be observed from the observation port, and the cover 6 can be opened to process the inside of the box body 1.

[0047] The implementation principle of a desizing device for polyester-cotton fabric in the embodiment of the present application is as follows: the fabric is transported by a transport roller 11, and is sequentially wound around the upper and lower cloth guide rollers 12, the fabric passes between two adjacent cloth-moving rods 4, the roller 13 squeezes the cloth, the motor 21 drives the pulley 22 to rotate, the pulley 22 drives the cloth guide rollers 12 to rotate through the first belt 23 to transport the fabric, and at the same time drives the rotating disk 51 to rotate, the rotating disk 51 pushes the connecting rod 52 and then drives the sliding rod 3 to reciprocate, and the sliding rod 3 drives the cloth-moving rod 4 to move to beat the fabric.

[0048] The first screw rod 511 is rotated to adjust the position of the first slider 53 on the rotating disk 51, thereby adjusting the rotation radius of one end of the connecting rod 52 and the reciprocating movement distance of the sliding rod 3, which is suitable for beating fabrics of different materials.

[0049] The third screw rod 31 is rotated to drive the two adjacent sliding frames 33 to slide in opposite directions, thereby adjusting the distance between the two adjacent manipulation rods 4, which is suitable for manipulation of fabrics of different thicknesses.

[0050] The second screw rod 16 is rotated to adjust the position of the roller frame 15, and then the relative position between the roller 13 and the cloth guide roller 12 is adjusted, which is suitable for squeezing fabrics of different thicknesses.

[0051] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A desizing device for polyester-cotton fabric, comprising a box (1), wherein the box (1) is provided with through holes on two opposite sides, wherein the box (1) is provided with a transport roller (11) at the through hole, wherein a plurality of cloth guide rollers (12) are provided inside the box (1), wherein a driving member (2) for driving the cloth guide rollers (12) to rotate is provided outside the box (1), wherein the plurality of cloth guide rollers (12) are parallel to each other and are staggered up and down, wherein the box (1) is provided with a roller (13) on the upper side of the cloth guide rollers (12), wherein: A cloth-moving assembly is arranged in the box body (1), and the cloth-moving assembly comprises a sliding rod (3) and a cloth-moving rod (4). The sliding rod (3) is slidably mounted on the inner wall of the box body (1) and is located between the cloth-guide rollers (12) on the upper and lower sides. The sliding rod (3) and the cloth-guide rollers (12) are arranged perpendicular to each other and slide along the transport direction of the fabric. The cloth-moving rod (4) is arranged in the box body (1) and is arranged parallel to the cloth-guide rollers (12). The cloth-moving rod (4) is connected to the sliding rod (3). A rotating part (5) for driving the sliding rod (3) to slide back and forth is arranged on the box body (1).

2. A desizing device for polyester-cotton fabric according to claim 1, characterized in that: The rotating member (5) comprises a rotating disk (51) and a connecting rod (52); a sliding plate (17) is slidably mounted on the box body (1); the sliding plate (17) is connected to the sliding rod (3); the rotating disk (51) is rotatably mounted on the outer wall of the box body (1); one end of the connecting rod (52) is rotatably mounted on a side surface of the rotating disk (51); an end of the connecting rod (52) facing away from the rotating disk (51) is rotatably connected to a side surface of the sliding plate (17); and the rotating disk (51) is connected to the driving member (2).

3. A desizing device for polyester-cotton fabric according to claim 2, characterized in that: The driving member (2) comprises a motor (21) and a pulley (22); the pulley (22) and the cloth guide roller (12) are coaxially and fixedly connected; the motor (21) is arranged on the outer wall of the box (1); the pulley (22) is connected to the output shaft of the motor (21); the pulleys (22) on the cloth guide roller (12) are connected to each other via a first belt (23); and the pulley (22) and the rotating disk (51) are connected to each other via a second belt (24).

4. A desizing device for polyester-cotton fabric according to claim 2, characterized in that: A first screw rod (511) is rotatably mounted on one side surface of the rotating disk (51), the first screw rod (511) being distributed along the radial direction of the rotating disk (51), a first slider (53) is slidably mounted on one side surface of the rotating disk (51) along the radial direction of the rotating disk (51), the first slider (53) being threadedly connected to the first screw rod (511), and one end of the connecting rod (52) is rotatably connected to a side surface of the first slider (53).

5. A desizing device for polyester-cotton fabric according to claim 1, characterized in that: A rolling stand (15) is slidably mounted in the box body (1), both ends of the rolling roll (13) are rotatably mounted on the rolling stand (15), a second screw rod (16) is rotatably mounted on one side of the rolling stand (15), and the second screw rod (16) is threadedly connected to the box body (1).

6. A desizing device for polyester-cotton fabric according to claim 1, characterized in that: Two of the manipulation rods (4) are provided and are located at two opposite sides of the fabric. The manipulation rods (4) are provided in a plurality of groups and are evenly arranged along the length direction of the sliding rod (3).

7. A desizing device for polyester-cotton fabric according to claim 1, characterized in that: A third screw rod (31) is rotatably mounted on the sliding rod (3) along the length direction of the sliding rod (3); a sliding groove (32) is provided on the sliding rod (3); a sliding frame (33) is slidably mounted on the sliding rod (3) at the sliding groove (32); the two ends of the swing rod (4) are rotatably connected to the sliding frames (33) on both sides; two opposite threaded sections are provided on the third screw rod (31); the sliding frames (33) at one end of two adjacent swing rods (4) are threadedly connected to the third screw rod (31) at the two opposite threaded sections respectively.

8. A desizing device for polyester-cotton fabric according to claim 7, characterized in that: The sliding frame (33) comprises a sliding plate (331) and a connecting plate (332); the sliding plate (331) is slidably mounted on the sliding groove (32) of the sliding rod (3) and is threadedly connected to the third screw rod (31); a connecting rod (333) is slidably mounted on the sliding plate (331); the connecting plate (332) is arranged at one end of the connecting rod (333); one end of the manipulation rod (4) is rotatably connected to the connecting plate (332); and a spring (152) is sleeved on the connecting rod (333).

9. A desizing device for polyester-cotton fabric according to claim 1, characterized in that: The box body (1) is provided with heating plates (19) on the inner side wall and the bottom wall.

10. A desizing device for polyester-cotton fabric according to claim 1, characterized in that: The box body (1) is provided with an observation port at the top, and a cover (6) is rotatably mounted on the box body (1) at the observation port.

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