A rotary soaking device for leather tanning
By replacing the traditional connection method with a stainless steel threaded rod and nut, and combined with a clamping assembly, the problem of wear and inconvenient replacement of the fixing rod in the leather tanning device is solved, enabling convenient replacement of the rotating roller and an efficient soaking process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG JUNCHENG LEATHER CO LTD
- Filing Date
- 2025-07-18
- Publication Date
- 2026-07-03
AI Technical Summary
Existing leather tanning equipment is prone to wear and tear on the connection method of the fixing rod when dealing with leather of different sizes, leading to stripping problems. Replacing the fixing rod is also inconvenient and affects the soaking efficiency.
The use of threaded rods and nuts made of stainless steel replaces the traditional welding or bolt connection. Combined with a clamping assembly, it tightens the leather and simplifies the replacement and installation process of the rotating roller.
It improves the ease of replacing and installing the rotating roller, reduces maintenance costs, minimizes the risk of leather slippage, and enhances soaking efficiency.
Smart Images

Figure CN224450726U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of leather manufacturing equipment technology, specifically a rotary soaking device for leather tanning. Background Technology
[0002] Leather is animal hide that has been modified and is less prone to decay through physical and chemical processes such as hair removal and tanning. Leather is composed of tightly woven natural protein fibers in three-dimensional space, and its surface has a special grain layer with natural grain and luster, resulting in a comfortable feel. To inhibit bacterial growth and increase the lifespan of leather products, leather is generally soaked in disinfectant solutions for an extended period during its production.
[0003] Publication number CN219409769U discloses a soaking device for leather manufacturing. By fixing the leather to a leather fixing frame on a first or second fixing rod, and then using a rotary drive mechanism to rotate a rotating shaft, the fixing sleeve drives the first and second fixing rods to rotate, thereby improving the soaking efficiency. However, this patent still has the following problems in actual use:
[0004] By fixing the leather to a leather holder on the first or second fixing rod, and then driving the rotating shaft to rotate through a rotary drive mechanism, the fixing sleeve drives the first and second fixing rods to rotate, thereby improving the soaking efficiency. However, when dealing with leather of different sizes, the first and second fixing rods may not be able to fully unfold the leather. In this case, it is necessary to replace the first and second fixing rods. However, currently, the connection method for the first and second fixing rods is mostly welding or bolt connection. Bolt connection can lead to wear on the thread texture between the bolt and the bolt hole due to frequent disassembly over a long period of time, resulting in stripping of the threads between the bolt and the bolt hole.
[0005] A rotary soaking apparatus for leather tanning is proposed to address the problems mentioned above. Utility Model Content
[0006] The purpose of this invention is to provide a rotary soaking device for leather tanning, to solve the problems mentioned in the background art. Currently, the leather is fixed to a leather holder on a first or second fixed rod, and then a rotary drive mechanism drives a rotating shaft to rotate, thereby causing the fixed sleeve to rotate the first and second fixed rods, thus improving soaking efficiency. However, when dealing with leather of different sizes, the first and second fixed rods may not be able to fully unfold the leather, requiring the replacement of different first and second fixed rods. Currently, the connection method for the first and second fixed rods is mostly welding or bolting. Bolting connections, due to frequent disassembly and reassembly over a long period, may cause wear on the thread texture between the bolt and the bolt hole, leading to stripping of the threads.
[0007] To achieve the above objectives, the present invention provides the following technical solution: a rotary soaking device for leather tanning, comprising a soaking tank, wherein an extension plate is fixedly connected to one side surface of the soaking tank;
[0008] A stepper motor is fixedly installed on the top surface of the extension plate. A first pulley is connected through the surface of the output end of the stepper motor. A belt is attached to the surface of the first pulley. A second pulley is attached to the surface of the belt away from the first pulley. A rotating rod is connected through the middle of the inside of the first pulley. A rotating rod is fixedly connected to the surface of the stepper motor output end that passes through the soaking tank.
[0009] Also includes:
[0010] A connecting component is provided on the surface of the rotating rod away from the stepper motor;
[0011] The connecting component includes a stabilizing block that is fixedly connected to the rotating rod;
[0012] The stabilizing block has a threaded rod running through its center.
[0013] Preferably, nuts are threaded onto both sides of the surface of the threaded insert, and the threaded insert is made of stainless steel.
[0014] Preferably, a connecting block is attached to the bottom surface of the stabilizing block, and a rotating roller is fixedly connected to the side surface of the connecting block away from the stabilizing block.
[0015] Preferably, a connecting rod is fixedly installed on the side surface of the rotating roller away from the connecting block, and the side surface of the connecting rod away from the rotating roller is rotatably connected to the soaking tank.
[0016] Preferably, a plurality of clamping components are fixedly installed on the surface of the rotating roller. Each clamping component includes a connecting frame fixedly connected to the rotating roller, and a placement plate is fixedly connected to one side of the surface of the connecting frame.
[0017] Preferably, a screw is connected through the middle of the connecting frame, a bearing seat is rotatably connected to the bottom surface of the screw, and a pressure plate is fixedly connected to the bottom surface of the bearing seat.
[0018] Preferably, the screw is made of stainless steel.
[0019] Compared with the prior art, the beneficial effects of this utility model are as follows: This rotary soaking device for leather tanning, by setting a connecting component, makes it easier and simpler to replace the rotating roller compared to bolts. It also makes replacement easier when the connecting component is damaged. Furthermore, by setting a clamping component, the leather can be clamped, thus facilitating subsequent rotary soaking of the leather. The specific details are as follows:
[0020] 1. By setting up a connecting assembly, when the rotating roller needs to be replaced, the nuts on both sides of the threaded rod are removed, and the threaded rod is separated from the stabilizing block and the connecting block to disassemble the rotating roller. When installing the rotating roller, the connecting block is placed between the two stabilizing blocks, aligning the holes on the connecting block with those on the stabilizing blocks. The threaded rod is then passed through the connecting block and the stabilizing block, and the nuts are threaded onto the threaded rod. The two nuts press against the two stabilizing blocks, thus limiting and fixing the threaded rod, which to some extent completes the installation of the rotating roller. Compared to bolts and screw holes, using a threaded rod and nut makes disassembly and installation of the rotating roller simpler and more convenient; the nut and threaded rod can usually be replaced or repaired separately. If only the nut or threaded rod is faulty, it doesn't require repairing or remachining the entire screw hole as with bolts and screw holes. This makes disassembly and installation of the rotating roller more convenient and can reduce costs to some extent.
[0021] 2. By setting up a pressing assembly, during the rotational soaking of leather, the leather is placed on the placement plate, and then the screw is rotated. The screw and the connecting frame are connected by a through thread, which allows the screw to descend during rotation. The screw and the bearing seat are rotatably connected, so the rotation of the screw does not drive the rotation of the bearing seat. However, when the screw descends, it drives the bearing seat to descend, which in turn drives the pressing plate to descend. This allows the pressing plate to press the leather firmly, thereby reducing the possibility of the leather slipping or falling off during rotational soaking.
[0022] 3. By setting up a stepper motor, a first pulley, a belt, a second pulley, a rotating rod, a connecting assembly, a connecting block, a rotating roller, and a connecting rod, after the leather is placed, the stepper motor is started via the control terminal. The output of the stepper motor drives the rotating rod to rotate. The rotation of the rotating rod drives the connecting assembly to rotate, which in turn drives the connecting block to rotate, which in turn drives the rotating roller to rotate. The rotation of the rotating roller drives the other connecting assembly to rotate, which in turn drives the connecting rod to rotate. This achieves rotational soaking of the leather. Simultaneously, the rotation of the stepper motor output also drives the first pulley to rotate, which in turn drives the belt to rotate, which in turn drives the second pulley to rotate. The rotation of the second pulley drives the rotating rod to rotate, which in turn drives the other rotating roller to rotate. This allows multiple pieces of leather to be rotated and soaked, thereby improving the soaking efficiency of the leather to a certain extent. Attached Figure Description
[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0024] Figure 2 This is a schematic diagram of the connection structure between the stepper motor and the rotating roller in this utility model;
[0025] Figure 3 This is a schematic diagram of the overall structure of the connecting component in this utility model;
[0026] Figure 4 This is a schematic diagram of the overall structure of the clamping assembly in this utility model;
[0027] Figure 5 This is an exploded view of the overall structure of the connecting component in this utility model.
[0028] In the diagram: 1. Soaking tank; 2. Extension plate; 3. Stepper motor; 4. First pulley; 5. Belt; 6. Second pulley; 7. Rotating rod; 8. Rotating rod; 9. Connecting assembly; 901. Stabilizing block; 902. Threaded rod; 903. Nut; 10. Connecting block; 11. Rotating roller; 12. Connecting rod; 13. Pressing assembly; 1301. Connecting frame; 1302. Placement plate; 1303. Screw; 1304. Bearing seat; 1305. Pressing plate. Detailed Implementation
[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0030] Please see Figure 1-5 This utility model provides a technical solution: a rotary soaking device for leather tanning, including a soaking tank 1, an extension plate 2 fixedly connected to one side surface of the soaking tank 1; a stepper motor 3 fixedly mounted on the top surface of the extension plate 2, a first pulley 4 penetratingly connected to the output end of the stepper motor 3, a belt 5 attached to the surface of the first pulley 4, a second pulley 6 attached to the surface of the belt 5 away from the first pulley 4, a rotating rod 7 penetratingly connected to the center of the first pulley 4, and a rotating rod 8 fixedly connected to the output end of the stepper motor 3 through the surface of the soaking tank 1; further comprising: a connecting assembly 9 provided on the surface of the rotating rod 8 away from the stepper motor 3; wherein the connecting assembly 9 includes a stabilizing block 901 fixedly connected to the rotating rod 8; wherein a threaded insert rod 902 penetratingly connected to the center of the stabilizing block 901, such as Figure 1-5 As shown, by setting the connecting component 9, it is easier and simpler to replace the rotating roller 11 compared to the bolt. At the same time, it is also easier to replace the connecting component 9 when it is damaged. In addition, by setting the pressing component 13, the leather can be pressed, which facilitates the subsequent rotation and soaking of the leather.
[0031] Nuts 903 are threaded onto both sides of the surface of the threaded insert 902. The threaded insert 902 is made of stainless steel. Figure 3 , 5As shown, when the rotating roller 11 needs to be replaced, the nuts 903 on both sides of the threaded rod 902 are removed, and the rotating roller 11 can be disassembled by separating the threaded rod 902 from the stabilizing block 901 and the connecting block 10. When installing the rotating roller 11, the connecting block 10 is placed between the two stabilizing blocks 901, aligning the holes on the connecting block 10 with the holes on the stabilizing blocks 901. The threaded rod 902 is then passed through the connecting block 10 and the stabilizing block 901, and the nuts 903 are threaded onto the threaded rod 902. This causes the two nuts 903 to press against the two stabilizing blocks 901, thus limiting and fixing the threaded rod 902. This also completes the installation of the rotating roller 11 to a certain extent. Furthermore, the stainless steel threaded rod 902 and nuts 903 have good corrosion and rust resistance. Appropriate coatings can also be applied according to actual usage conditions, thereby extending the service life of the threaded rod 902 and nuts 903 to a certain extent.
[0032] A connecting block 10 is attached to the bottom surface of the stabilizing block 901. A rotating roller 11 is fixedly connected to the side of the connecting block 10 away from the stabilizing block 901. A connecting rod 12 is fixedly installed on the side of the rotating roller 11 away from the connecting block 10. The side of the connecting rod 12 away from the rotating roller 11 is rotatably connected to the soaking tank 1. Figure 2 As shown, by setting up a stepper motor 3, a first pulley 4, a belt 5, a second pulley 6, a rotating rod 7, a rotating rod 8, a connecting assembly 9, a connecting block 10, a rotating roller 11, and a connecting rod 12, after the leather is placed, the stepper motor 3 is started via the control terminal, causing the output of the stepper motor 3 to drive the rotation of the rotating rod 8. The rotation of the rotating rod 8 drives the rotation of the connecting assembly 9, which in turn drives the rotation of the connecting block 10. The rotation of the connecting block 10, in turn, drives the rotation of the rotating roller 11, which in turn drives the rotation of the connecting assembly 9 on the other side. The rotation of connecting component 9 drives the rotation of connecting rod 12, thereby enabling the leather to be rotated and soaked. At the same time, when the output end of stepper motor 3 rotates, it also drives the rotation of first pulley 4. The rotation of first pulley 4 drives the rotation of belt 5. The rotation of belt 5 drives the rotation of second pulley 6. The rotation of second pulley 6 drives the rotation of rotating rod 7. This allows rotating rod 7 to drive the rotation of another rotating roller 11, thus enabling multiple leathers to be rotated and soaked, thereby improving the soaking efficiency of leather to a certain extent. Meanwhile, connecting rod 11 can also be coated with anti-corrosion and anti-rust paint.
[0033] Several clamping assemblies 13 are fixedly mounted on the surface of the rotating roller 11. Each clamping assembly 13 includes a connecting frame 1301 fixedly connected to the rotating roller 11. A placement plate 1302 is fixedly connected to one side of the connecting frame 1301. A screw 1303 is threaded through the center of the connecting frame 1301. A bearing seat 1304 is rotatably connected to the bottom surface of the screw 1303. A clamping plate 1305 is fixedly connected to the bottom surface of the bearing seat 1304. The screw 1303 is made of stainless steel. Figure 2 , 4 As shown, by setting the clamping assembly 13, when the leather is rotated and soaked, the leather is placed on the placement plate 1302, and then the screw 1303 is rotated. The screw 1303 and the connecting frame 1301 are connected by a through thread, which allows the screw 1303 to descend when rotating. The screw 1303 and the bearing seat 1304 are rotatably connected, which means that the rotation of the screw 1303 will not drive the rotation of the bearing seat 1304. However, when the screw 1303 descends, it can drive the descent of the bearing seat 1304. The descent of the bearing seat 1304 can drive the descent of the clamping plate 1305, so that the clamping plate 1305 can clamp the leather, thereby reducing the occurrence of the leather slipping and falling off during rotation and soaking. The screw 1303, made of stainless steel, has good corrosion and rust resistance. At the same time, the bearing seat 1304 can be coated with anti-corrosion and anti-rust paint according to actual use, thereby improving the service life of the bearing seat 1304.
[0034] Working principle: Before using this type of rotary soaking device for leather tanning, it is necessary to check the overall condition of the device to ensure it can operate normally. Figure 1 - Figure 5As shown, by first setting the connecting component 9, when the rotating roller 11 needs to be replaced, the nuts 903 on both sides of the threaded rod 902 are removed, and the threaded rod 902 is separated from the stabilizing block 901 and the connecting block 10, thus removing the rotating roller 11. Simultaneously, when installing the rotating roller 11, the connecting block 10 is placed between the two stabilizing blocks 901, aligning the holes on the connecting block 10 with the holes on the stabilizing blocks 901. The threaded rod 902 is then passed through the connecting block 10 and the stabilizing block 901, and the nuts 903 are threaded onto the threaded rod 902. This causes the two nuts 903 to press against the two stabilizing blocks 901, thereby stabilizing the threaded rod 902. The limiting and fixing mechanism allows for the installation of the rotating roller 11 to a certain extent. Compared to bolts and screw holes, the use of threaded rods 902 and nuts 903 makes disassembling and installing the rotating roller 11 much simpler and more convenient. Simply unscrew the nut 903 and pull out the threaded rod 902. Moreover, the threaded rod 902 and nut 903 can usually be replaced or repaired separately. If only the nut 903 or the threaded rod 902 has a problem, it does not require repairing or remachining the entire screw hole as is necessary with bolts and screw holes. This makes disassembling and installing the rotating roller 11 more convenient and can also reduce costs to some extent.
[0035] Secondly, by setting up the pressing assembly 13, when the leather is rotated and soaked, the leather is placed on the placement plate 1302, and then the screw 1303 is rotated. The screw 1303 and the connecting frame 1301 are connected by a through thread, which allows the screw 1303 to descend when rotating. The screw 1303 and the bearing seat 1304 are rotatably connected, which means that the rotation of the screw 1303 will not drive the rotation of the bearing seat 1304. However, when the screw 1303 descends, it can drive the descent of the bearing seat 1304. The descent of the bearing seat 1304 can drive the descent of the pressing plate 1305, thereby allowing the pressing plate 1305 to press the leather tightly, thus reducing the occurrence of the leather slipping and falling off during rotation and soaking.
[0036] Finally, by configuring a stepper motor 3, a first pulley 4, a belt 5, a second pulley 6, a rotating rod 7, a rotating rod 8, a connecting assembly 9, a connecting block 10, a rotating roller 11, and a connecting rod 12, after the leather is placed, the stepper motor 3 is started via the control terminal. The output of the stepper motor 3 drives the rotating rod 8 to rotate. The rotation of the rotating rod 8 drives the connecting assembly 9 to rotate, which in turn drives the connecting block 10 to rotate, which in turn drives the rotating roller 11 to rotate, and the rotation of the rotating roller 11 drives the connecting assembly on the other side... The rotation of component 9, and the rotation of the connecting component 9 on the other side, drives the rotation of the connecting rod 12, thereby enabling the leather to be rotated and soaked. At the same time, when the output end of the stepper motor 3 rotates, it also drives the rotation of the first pulley 4. The rotation of the first pulley 4 drives the rotation of the belt 5. The rotation of the belt 5 drives the rotation of the second pulley 6. The rotation of the second pulley 6 drives the rotation of the rotating rod 7. This allows the rotating rod 7 to drive the rotation of another rotating roller 11, thus enabling multiple leathers to be rotated and soaked, thereby improving the soaking efficiency of the leather to a certain extent.
[0037] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A rotary soaking apparatus for leather tanning, comprising a soaking tank (1), wherein an extension plate (2) is fixedly connected to one side surface of the soaking tank (1). A stepper motor (3) is fixedly installed on the top surface of the extension plate (2). A first pulley (4) is connected through the surface of the output end of the stepper motor (3). A belt (5) is attached to the surface of the first pulley (4). A second pulley (6) is attached to the surface of the belt (5) away from the first pulley (4). A rotating rod (7) is connected through the middle of the inside of the first pulley (4). A rotating rod (8) is fixedly connected to the surface of the output end of the stepper motor (3) that passes through the soaking tank (1). characterized in that Also includes: A connecting component (9) is provided on the side surface of the rotating rod (8) away from the stepper motor (3). The connecting component (9) includes a stabilizing block (901) that is fixedly connected to the rotating rod (8). Among them, a threaded rod (902) is connected through the middle of the interior of the stabilizing block (901).
2. A rotating immersion apparatus for tanning leather according to claim 1, characterized in that: The threaded insert (902) has nuts (903) threadedly connected to both sides of its surface, and the threaded insert (902) is made of stainless steel.
3. A rotating immersion apparatus for tanning leather according to claim 1, characterized in that: A connecting block (10) is attached to the bottom surface of the stabilizing block (901), and a rotating roller (11) is fixedly connected to the side surface of the connecting block (10) away from the stabilizing block (901).
4. A rotating immersion apparatus for tanning leather according to claim 3, characterized in that: A connecting rod (12) is fixedly installed on the side surface of the rotating roller (11) away from the connecting block (10), and the side surface of the connecting rod (12) away from the rotating roller (11) is rotatably connected to the soaking tank (1).
5. A rotating immersion apparatus for tanning leather according to claim 3, characterized in that: A plurality of clamping assemblies (13) are fixedly installed on the surface of the rotating roller (11). The clamping assembly (13) includes a connecting frame (1301) fixedly connected to the rotating roller (11). A placement plate (1302) is fixedly connected to one side of the surface of the connecting frame (1301).
6. A rotating immersion apparatus for tanning leather according to claim 5, characterized in that: A screw (1303) is connected through the middle of the inside of the connecting frame (1301). A bearing seat (1304) is rotatably connected to the bottom surface of the screw (1303). A pressure plate (1305) is fixedly connected to the bottom surface of the bearing seat (1304).
7. The rotary soaking apparatus for leather tanning according to claim 6, characterized in that: The screw (1303) is made of stainless steel.