Gray cloth sizing equipment for synthetic leather production

Abstract

The invention relates to the technical field of synthetic leather production equipment, and particularly discloses gray cloth sizing equipment for synthetic leather production, which comprises a dipping tank, a preshrinking tank and a secondary shrinking tank are arranged in the dipping tank, cloth roller groups are arranged in and above the dipping tank, each cloth roller group comprises a transition roller, and the transition roller is arranged above the middle of the dipping tank. According to the invention, the preshrinking groove and the secondary shrinkage groove are designed, the internal stress of the base cloth is initially released at low temperature, and then the final shaping is completed at high temperature, so that the wrinkling and unevenness of the cloth surface caused by one-time high-temperature shrinkage are prevented. The slurry box moves back and forth to supplement slurry into the immersion tank, slurry supplement at a fixed position and local concentration fluctuation are avoided, and meanwhile, the floating plate descends, and the output pipe is opened to automatically supplement the slurry. The heating pipe is designed to move back and forth for heating, local overheating or underheating is prevented, meanwhile, slurry is pushed, the slurry passes through the heating pipe, meanwhile, the slurry rotates in the immersion tank, and the temperature of the slurry is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of synthetic leather production equipment technology, and specifically to a sizing device for synthetic leather production fabric. Background Technology

[0002] Synthetic leather is a man-made material that mimics the composition and structure of natural leather, serving as a substitute for natural leather. In the production of synthetic leather, sizing of the base fabric (also known as sizing of the greige fabric) is a crucial pretreatment process.

[0003] However, existing synthetic leather sizing processes involve sizing in a single dip tank, with the base fabric directly immersed in the high-temperature sizing solution (80-95℃). This results in significant shrinkage, easily leading to wrinkles and uneven fabric surfaces. Furthermore, existing dip tanks often use fixed heating pipes, causing uneven temperatures and poor sizing results. Therefore, those skilled in the art have provided a sizing device for synthetic leather production fabrics to address the problems mentioned in the background section. Summary of the Invention

[0004] To solve the above technical problems, the present invention provides a sizing device for synthetic leather production fabric, including an impregnation tank, wherein a pre-shrinking tank and a secondary shrinking tank are provided inside the impregnation tank, and a fabric roller group is installed inside and above the impregnation tank. The fabric roller group includes a transition roller, which is installed in the middle and above the impregnation tank. An installation platform is placed above both the pre-shrinking tank and the secondary shrinking tank. The installation platform includes an installation plate with both ends located on the edge of the immersion tank. Drive components that drive the installation platform to move back and forth are installed on both sides of the immersion tank. A slurry tank is fixedly installed above the installation plate. A floating platform is slidably connected below the installation plate. The floating platform includes a float plate with a push plate installed in the middle below the float plate. Heating devices are installed below the float plate on both sides of the push plate. The push plate includes a fixed plate, with openings on both sides of the fixed plate and opening two in the middle of opening one. Multiple fixed plates are arranged in a front-to-back alignment. A guide plate is rotatably connected to one side of the fixed plate. One end of the guide plate is close to the side of opening one, and the other end of the guide plate is away from the other end of opening one. The other end of the guide plate rotates to contact the fixed plate on the rear side.

[0005] Preferably, a partition is provided between the pre-shrinking groove and the secondary shrinking groove, and a gap is provided between the partitions.

[0006] Preferably, the drive assembly includes a second bevel gear, which is fixedly installed at both ends of the transition roller. Mounting brackets are symmetrically fixedly connected to both sides of the immersion tank. A reciprocating screw is horizontally mounted on the upper end of the mounting bracket. A first bevel gear is fixedly connected to one end of the reciprocating screw near the middle of the immersion tank. The first bevel gear on the same side meshes with the second bevel gear on the same side. A reciprocating nut is installed on the outside of the reciprocating screw. A connecting plate is fixedly connected to the outside of the reciprocating nut. Connecting ears are fixedly connected to both ends of the mounting plate. The lower end of the connecting plate can be located inside the connecting ears. A pin is horizontally inserted between the lower end of the connecting ears and the lower end of the connecting plate.

[0007] Preferably, the mounting plate has grooves on both sides, the grooves are engaged with the frame of the immersion tank, and rollers are rotatably connected inside the grooves, with the rollers located above the frame of the immersion tank.

[0008] Preferably, each of the upper corners of the float is vertically fixed with a connecting rod, the upper end of the connecting rod passing through the corner of the mounting plate, a connecting beam is fixedly connected above the connecting rod on the same side, a sealing column is fixedly connected above the middle of the connecting beam, the slurry tank includes a tank body, output pipes are fixedly connected to both sides of the tank body, an insertion pipe is fixedly connected below the output pipe, and the upper end of the sealing column is inserted into the insertion pipe and extends into the output pipe.

[0009] Preferably, the box body has an opening at the top, and a sealing cap is placed in the opening.

[0010] Preferably, a conveying roller is rotatably connected above one side of both the pre-shrinking trough and the secondary shrinking trough, and multiple guide rollers are installed on both sides inside the pre-shrinking trough and the secondary shrinking trough, with the guide rollers located between the conveying rollers and the transition rollers.

[0011] Preferably, a conveying mechanism is installed on one side of the soaking tank, and the fabric enters the conveying mechanism after passing over the transition roller, guide roller and conveying roller.

[0012] Preferably, temperature sensors are installed inside both the pre-shrinking tank and the secondary shrinking tank.

[0013] Preferably, the heating device includes heating tubes, and a plurality of heating tubes are arranged in a front-to-back alignment, with the gaps between the heating tubes and the fixing plate aligned one by one.

[0014] The technical effects and advantages of this invention are as follows: 1. This invention is designed with a pre-shrinking groove and a secondary shrinking groove. The base fabric is initially released from internal stress by low temperature, and then the final shaping is completed by high temperature. The fiber network structure is stable, preventing wrinkles and unevenness of the fabric surface caused by one-time high temperature shrinkage.

[0015] 2. This invention uses a slurry tank that moves back and forth to replenish slurry into the soaking tank, avoiding the need for slurry replenishment at a fixed location and localized concentration fluctuations. At the same time, the float descends and the output pipe opens to automatically replenish slurry.

[0016] 3. This invention uses a heating tube that moves back and forth to heat the slurry, preventing local overheating or underheating. At the same time, it pushes the slurry through the heating tube and rotates it inside the soaking tank to ensure the temperature of the slurry. Attached Figure Description

[0017] Figure 1 This is a structural diagram provided in this application; Figure 2 This is a schematic diagram of the internal structure of the immersion tank provided in this application; Figure 3 This is a structural schematic diagram of the side of the immersion tank provided in this application; Figure 4 This is a structural schematic diagram of the mounting platform provided in this application; Figure 5 This is a structural diagram of the mounting platform and connecting plate provided in this application when they are connected; Figure 6 This is a structural schematic diagram of the slurry tank provided in this application; Figure 7 This is a schematic diagram of the structure below the floating plate provided in this application; Figure 8 This is a schematic diagram of the guide plate when it is closed, as provided in this application; Figure 9 This is a schematic diagram of the structure of the guide plate provided in this application when it is pushed open; In the picture: 1. Immersion tank; 101. Pre-shrinkage tank; 102. Secondary shrinkage tank; 103. Partition plate; 104. Mounting bracket; 105. Reciprocating lead screw; 106. Reciprocating nut; 107. Connecting plate; 108. Bevel gear one; 109. Pin; 2. Fabric roller assembly; 201. Transition roller; 202. Guide roller; 203. Conveyor roller; 204. Bevel gear II; 3. Mounting platform; 301. Mounting plate; 302. Connecting lug; 303. Slide groove; 304. Roller; 4. Floating platform; 401. Floating plate; 402. Connecting rod; 403. Connecting crossbeam; 404. Sealing column; 5. Slurry tank; 501. Tank body; 502. Sealing cover; 503. Output pipe; 504. Insertion pipe; 6. Push plate; 601. Fixing plate; 602. Opening one; 603. Opening two; 604. Guide plate; 7. Heating device; 701. Heating tube. Detailed Implementation

[0018] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0019] In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0020] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0021] Please see Figures 1-9 In this embodiment, a sizing device for synthetic leather production fabric is mentioned, including an impregnation tank 1. The impregnation tank 1 has a pre-shrinking tank 101 and a secondary shrinking tank 102. A cloth roller group 2 is installed inside and above the impregnation tank 1. The cloth roller group 2 includes a transition roller 201, which is installed in the middle and above the impregnation tank 1. An installation platform 3 is placed above both the pre-shrinking tank 101 and the secondary shrinking tank 102. The installation platform 3 includes an installation plate 301. The two ends of the installation plate 301 are located on the edge of the immersion tank 1. Drive components that drive the installation platform 3 to move back and forth are installed on both sides of the immersion tank 1. A slurry tank 5 is fixedly installed above the installation plate 301. A floating platform 4 is slidably connected below the installation plate 301. The floating platform 4 includes a float plate 401. A push plate 6 is installed in the middle below the float plate 401. Heating devices 7 are installed on both sides of the push plate 6 below the float plate 401. By adjusting the counterweight of the float plate 401, it can adapt to slurries of different viscosities.

[0022] The push plate 6 includes a fixed plate 601. The fixed plate 601 has openings 602 on both sides and opening 603 in the middle of opening 602. Multiple fixed plates 601 are arranged in a front-to-back alignment. A guide plate 604 is rotatably connected to one side of the fixed plate 601. One end of the guide plate 604 is close to the side of opening 602, and the other end of the guide plate 604 is away from the other end of opening 602. The other end of the guide plate 604 rotates to contact the rear fixed plate 601. When the pusher plate 6 moves, the slurry flows through the first opening 602 to the guide plate 604. The slurry pushes the guide plate 604 open through the first opening 602, and one end of the guide plate 604 abuts against the rear fixed plate 601 to form an inclined plate. This allows the slurry through the first opening 602 to flow to the side along the inclined channel formed by the guide plate 604. It is then heated by the heating device 7 located on one side, further improving the uniformity of heating. At the same time, some slurry flows through the second opening 603 to the rear fixed plate 601 and continues to flow to the side through the first opening 602 on the rear fixed plate 601, so that it can continue to be heated by the heating pipe 701. Under the push of the pusher plate 6, the slurry flows inside the immersion tank, ensuring the uniformity of the slurry temperature inside the immersion tank.

[0023] The moving radius of the mounting platform 3 is 60%-80% of the length of the immersion tank 1 to ensure full coverage. The moving speed of the mounting platform 3 is 0.5-2 m / min to avoid impact due to excessive speed and untimely slurry replenishment due to excessive slowness. The stroke range of the float 401 is 50-100 mm, corresponding to the allowable fluctuation range of the liquid level.

[0024] In this embodiment, specifically, a partition 103 is provided between the pre-shrinking tank 101 and the secondary shrinking tank 102, with a gap between the partitions 103. This reduces temperature transfer between the pre-shrinking tank 101 and the secondary shrinking tank 102. The partition 103 has a double-layer hollow structure, filled with polyurethane foam insulation material with a thickness of 20-30mm. The top of the partition 103 is 50-80mm lower than the edge of the immersion tank 1, forming an overflow buffer space. A 30-50mm gap is left between the bottom of the partition 103 and the bottom surface of the immersion tank 1 for installing the bottom support structure, while also allowing maintenance personnel to perform cleaning operations from below. This gap design, while ensuring structural strength, maximizes the blocking of heat convection between the two tanks, resulting in a measured temperature transfer reduction of over 60%.

[0025] In this embodiment, specifically, the drive assembly includes a second bevel gear 204, which is fixedly installed at both ends of the transition roller 201. Mounting brackets 104 are symmetrically fixedly connected to both sides of the immersion tank 1. A reciprocating screw 105 is horizontally mounted on the upper end of the mounting bracket 104. A first bevel gear 108 is fixedly connected to one end of the reciprocating screw 105 near the middle of the immersion tank 1. The first bevel gear 108 on the same side meshes with the second bevel gear 204 on the same side. A reciprocating nut 106 is installed on the outside of the reciprocating screw 105. A connecting plate 107 is fixedly connected to the outside of the reciprocating nut 106. Connecting ears 302 are fixedly connected to both ends of the mounting plate 301. The lower end of the connecting plate 107 can be located inside the connecting ears 302. A pin 109 is horizontally inserted between the lower end of the connecting ears 302 and the lower end of the connecting plate 107. When the transition roller 201 rotates with the fabric, it also drives the bevel gears 204 at both ends to rotate. The rotation of the bevel gears 204 drives the bevel gears 108 on both sides to rotate. The rotation of the bevel gears 108 drives the reciprocating screw 105 to rotate. The rotation of the reciprocating screw 105 drives the reciprocating nut 106 to move back and forth along the reciprocating screw 105. The reciprocating nut 106 drives the mounting plate 301 to move back and forth through the connecting plate 107, thereby driving the mounting platform 3, the floating platform 4, the slurry tank 5 above the mounting platform 3, and the push plate 6 and heating device 7 installed below the floating platform 4 to move together. A mounting frame 104 is welded to the outside of the frame. The mounting frame 104 is an L-shaped bent plate made of the same stainless steel as the immersion tank 1. It is connected to the tank body by argon arc welding. The weld is ground and polished to avoid stress concentration and corrosion risks.

[0026] During maintenance, the pin 109 is removed, and the reciprocating nut 106 and the connecting plate 107 are rotated to one side to separate them from the connecting lug 302. This allows the mounting platform 3, floating platform 4, slurry tank 5, push plate 6, and heating device 7 to be separated upwards from the immersion tank 1, making them easy to remove for maintenance.

[0027] In this embodiment, specifically, the mounting plate 301 has sliding grooves 303 on both sides, which are engaged with the frame of the immersion tank 1. Rollers 304 are rotatably connected inside the sliding grooves 303, and the rollers 304 are located above the frame of the immersion tank 1. The sliding grooves 303 restrict the mounting plate 301 to move only back and forth on the immersion tank 1, while the rollers 304 reduce the friction between the mounting plate 301 and the immersion tank 1, making the mounting platform 3 easy to slide. The upper surfaces of the side frames of the immersion tank 1 are precision machined to a roughness Ra≤1.6μm, serving as sliding guides for the mounting platform 3.

[0028] In this embodiment, specifically, connecting rods 402 are vertically fixedly connected to the upper corners of the float 401. The upper ends of the connecting rods 402 pass through the corners of the mounting plate 301. A connecting beam 403 is fixedly connected above the connecting rods 402 on the same side. A sealing column 404 is fixedly connected to the upper middle of the connecting beam 403. The slurry tank 5 includes a tank body 501. Output pipes 503 are fixedly connected to both sides of the tank body 501. An insertion pipe 504 is fixedly connected below the output pipes 503. The upper end of the sealing column 404 is inserted into the insertion pipe 504 and extends deep into the output pipe 503. When the slurry level decreases, the slurry level inside the pre-shrinking tank 101 and the secondary shrinking tank 102 will drop, causing the float 401 to descend along with the slurry level. The float 401 pulls the connecting beam 403 down together via the connecting rod 402. The descent of the connecting beam 403 causes the sealing column 404 to move out of the insertion pipe 504. The removal of the upper end of the sealing column 404 opens the output pipe 503, and the slurry filled inside the slurry tank 5 flows out through the opened output pipe 503. At the same time, the slurry tank 5 moves along with the mounting platform 3 above the mounting platform 3, thereby evenly adding slurry into the soaking tank.

[0029] In this embodiment, specifically, an opening is provided at the top of the box 501, and a sealing cover 502 is placed in the opening. Slurry can be added into the box 501 by opening the sealing cover 502.

[0030] In this embodiment, specifically, a conveying roller 203 is rotatably connected above one side of the pre-shrinking groove 101 and the secondary shrinking groove 102, and multiple guide rollers 202 are installed on both sides inside the pre-shrinking groove 101 and the secondary shrinking groove 102. The guide rollers 202 are located between the conveying rollers 203 and the transition rollers 201.

[0031] In this embodiment, specifically, a conveying mechanism is installed on one side of the impregnation tank 1. The fabric passes over the transition roller 201, guide roller 202, and conveying roller 203 before entering the conveying mechanism. The fabric passes over the conveying roller 203 above the pre-shrinking tank 101, then passes under the guide roller 202 inside the pre-shrinking tank 101, then passes upwards over the transition roller 201, then downwards into the guide roller 202 inside the secondary shrinking tank 102, then upwards over the conveying roller 203 above the secondary shrinking tank 102, and finally passes over the conveying roller 203 again before being fed into the conveying mechanism for the next process. The transition roller 201, guide roller 202, and conveying roller 203 guide the fabric into the pre-shrinking tank 101 and secondary shrinking tank 102 for sizing.

[0032] In this embodiment, temperature sensors are specifically installed inside both the pre-shrinking tank 101 and the secondary shrinking tank 102. The temperature sensors monitor the internal temperature of the pre-shrinking tank 101 and the secondary shrinking tank 102.

[0033] In this embodiment, the heating device 7 specifically includes heating tubes 701, with multiple heating tubes 701 arranged in a front-to-back alignment, and the gaps between the heating tubes 701 and the fixing plate 601 aligned one by one. The heating tubes 701 are arranged in a serpentine or spiral shape to increase the heat exchange area.

[0034] Working principle of the invention: In operation, slurry is added to the pre-shrinking tank 101 and the secondary shrinking tank 102. The temperature inside the pre-shrinking tank 101 is 60-70℃, and the temperature inside the secondary shrinking tank 102 is 80-95℃. The fabric is passed over the conveyor roller 203 above the pre-shrinking tank 101, then through the guide roller 202 inside the pre-shrinking tank 101, then upwards over the transition roller 201, then downwards through the guide roller 202 inside the secondary shrinking tank 102, and finally upwards over the conveyor roller 203 above the secondary shrinking tank 102. As the fabric passes through the slurry in the pre-shrinking tank 101, it undergoes pre-shrinking to release stress, and the fibers begin to relax. Then, as it passes through the slurry in the secondary shrinking tank 102, the high temperature completes the final shaping, stabilizing the fiber network structure. After passing over the conveyor roller 203 again, the fabric is fed into the conveying mechanism for the next process.

[0035] When the transition roller 201 rotates with the fabric, it also drives the bevel gears 204 at both ends to rotate. The rotation of the bevel gears 204 drives the bevel gears 108 on both sides to rotate. The rotation of the bevel gears 108 drives the reciprocating screw 105 to rotate. The rotation of the reciprocating screw 105 drives the reciprocating nut 106 to move back and forth along the reciprocating screw 105. The reciprocating nut 106 drives the mounting plate 301 to move back and forth through the connecting plate 107, thereby driving the mounting platform 3, the floating platform 4, the slurry tank 5 above the mounting platform 3, and the push plate 6 and heating device 7 installed below the floating platform 4 to move together.

[0036] When the fabric leaves the pre-shrinking tank 101 and the secondary shrinking tank 102, it carries away some slurry, causing the slurry in the pre-shrinking tank 101 and the secondary shrinking tank 102 to decrease, requiring replenishment. When the slurry decreases, the liquid level of the slurry in the pre-shrinking tank 101 and the secondary shrinking tank 102 will drop, and the float 401 will drop along with the liquid level. The float 401 pulls the connecting beam 403 down together through the connecting rod 402. The descent of the connecting beam 403 causes the sealing column 404 to move out of the insertion pipe 504. The removal of the upper end of the sealing column 404 opens the output pipe 503, and the slurry filled in the slurry tank 5 flows out through the opened output pipe 503. At the same time, the slurry tank 5 moves together with the mounting platform 3 above the mounting platform 3, thereby adding the slurry evenly into the soaking tank.

[0037] The temperature of the slurry is monitored by a temperature sensor installed inside the immersion tank. When the temperature inside the immersion tank drops, the heating pipe 701 generates heat to reheat the slurry inside the immersion tank. At the same time, the heating device 7 moves with the floating platform 4 to heat the slurry inside the immersion tank back and forth, resulting in more uniform heating. Simultaneously, through the push plate 6 in the middle of the heating device 7, when the push plate 6 moves, the slurry flows through the opening 602 to the guide plate 604. The slurry pushes the guide plate 604 open through the opening 602, and one end of the guide plate 604 abuts against the fixed plate at the rear. An inclined plate is formed on 601, allowing the slurry through opening 602 to flow to the side along the inclined channel formed by the guide plate 604. It is then heated by the heating pipe 701 located on one side, further improving the uniformity of heating. At the same time, some slurry flows to the rear fixed plate 601 through opening 603 and continues to flow to the side through opening 602 on the rear fixed plate 601, so that it can continue to be heated by the heating pipe 701. The slurry flows inside the immersion tank under the push of the push plate 6, ensuring the uniformity of the slurry temperature inside the immersion tank.

[0038] Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A sizing device for synthetic leather production fabric, comprising an impregnation tank (1), characterized in that, The immersion tank (1) is provided with a pre-shrinking tank (101) and a secondary shrinking tank (102). A cloth roller group (2) is installed inside and above the immersion tank (1). The cloth roller group (2) includes a transition roller (201). The transition roller (201) is installed in the middle and above the immersion tank (1). An installation platform (3) is placed above both the pre-shrinking tank (101) and the secondary shrinking tank (102). The installation platform (3) includes an installation plate (301). The two ends of the installation plate (301) are located on the edge of the immersion tank (1). A drive assembly for driving the installation platform (3) to move back and forth is installed on both sides of the immersion tank (1). A slurry tank (5) is fixedly installed above the installation plate (301). A floating platform (4) is slidably connected below the installation plate (301). The floating platform (4) includes a float plate (401). A push plate (6) is installed in the middle below the float plate (401). Heating devices (7) are installed on both sides of the push plate (6) below the float plate (401). The push plate (6) includes a fixed plate (601), with openings 1 (602) on both sides of the fixed plate (601) and opening 2 (603) in the middle of opening 1 (602) on the fixed plate (601). Multiple fixed plates (601) are arranged in front and behind aligned. A guide plate (604) is rotatably connected to one side of the fixed plate (601). One end of the guide plate (604) is close to the side of opening 1 (602), and the other end of the guide plate (604) is away from the other end of opening 1 (602). The other end of the guide plate (604) rotates to contact the fixed plate (601) on the rear side.

2. The sizing equipment for synthetic leather production fabric according to claim 1, characterized in that, A partition (103) is provided between the pre-shrinking groove (101) and the secondary shrinking groove (102), and a gap is provided between the partitions (103).

3. The sizing equipment for synthetic leather production fabric according to claim 1, characterized in that, The drive assembly includes a second bevel gear (204), which is fixedly installed at both ends of the transition roller (201). The two sides of the immersion tank (1) are symmetrically connected to mounting brackets (104). A reciprocating screw (105) is horizontally installed on the upper end of the mounting bracket (104). A first bevel gear (108) is fixedly connected to one end of the reciprocating screw (105) near the middle of the immersion tank (1). The first bevel gear (108) on the same side meshes with the second bevel gear (204) on the same side. A reciprocating nut (106) is installed on the outside of the reciprocating screw (105). A connecting plate (107) is fixedly connected to the outside of the reciprocating nut (106). A connecting ear (302) is fixedly connected to both ends of the mounting plate (301). The lower end of the connecting plate (107) can be located inside the connecting ear (302). A pin (109) is horizontally inserted between the lower end of the connecting ear (302) and the lower end of the connecting plate (107).

4. The sizing equipment for synthetic leather production fabric according to claim 1, characterized in that, The mounting plate (301) has grooves (303) on both sides. The grooves (303) are locked on the frame of the immersion tank (1). A roller (304) is rotatably connected inside the groove (303). The roller (304) is located above the frame of the immersion tank (1).

5. A sizing device for synthetic leather production fabric according to claim 1, characterized in that, The upper corners of the float (401) are all vertically fixed with connecting rods (402). The upper end of the connecting rod (402) passes through the corner of the mounting plate (301). A connecting beam (403) is fixedly connected above the connecting rod (402) on the same side. A sealing column (404) is fixedly connected above the middle of the connecting beam (403). The slurry tank (5) includes a tank body (501). Output pipes (503) are fixedly connected on both sides of the tank body (501). An insertion pipe (504) is fixedly connected below the output pipe (503). The upper end of the sealing column (404) is inserted into the insertion pipe (504) and extends into the output pipe (503).

6. A sizing device for synthetic leather production fabric according to claim 5, characterized in that, The box (501) has an opening at the top, and a sealing cap (502) is placed in the opening.

7. A sizing device for synthetic leather production fabric according to claim 1, characterized in that, The pre-shrinking groove (101) and the secondary shrinking groove (102) are both rotatably connected to a conveying roller (203) on one side. Multiple guide rollers (202) are installed on both sides inside the pre-shrinking groove (101) and the secondary shrinking groove (102). The guide rollers (202) are located between the conveying rollers (203) and the transition rollers (201).

8. A sizing device for synthetic leather production fabric according to claim 1, characterized in that, A conveying mechanism is installed on one side of the soaking tank (1). The fabric passes over the transition roller (201), guide roller (202) and conveying roller (203) and enters the conveying mechanism.

9. A sizing device for synthetic leather production fabric according to claim 1, characterized in that, Temperature sensors are installed inside both the pre-shrinking tank (101) and the secondary shrinking tank (102).

10. A sizing device for synthetic leather production fabric according to claim 1, characterized in that, The heating device (7) includes heating tubes (701), and multiple heating tubes (701) are arranged in a front-to-back alignment, with the gaps between the heating tubes (701) and the fixing plate (601) aligned one by one.

Images