Multifunctional dyeing and drying all-in-one machine for leather production

By designing the leather soaking and dyeing device and drying components, the problems of uneven dyeing and floating of leather were solved, achieving uniform dyeing and efficient drying, thus improving the equipment's performance.

CN224258662UActive Publication Date: 2026-05-19SIKALIN IND (SHANGQIU) CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SIKALIN IND (SHANGQIU) CO LTD
Filing Date
2025-06-18
Publication Date
2026-05-19

AI Technical Summary

Technical Problem

Existing leather dyeing equipment has uniformity issues when dyeing thicker leather, especially the reverse side of the leather, which is difficult to dye completely. Furthermore, existing equipment is prone to causing the leather to float during the drying process.

Method used

The leather immersion dyeing device uses a lifting and lowering plate to immerse the leather in the dye solution, utilizing capillary action to achieve deep penetration of the dye solution. Magnets are used to maintain the stability of the drying chamber, and a PLC control structure is combined to automate the drying process and facilitate convenient maintenance.

Benefits of technology

It achieves uniformity and deep penetration in the leather dyeing process, avoids leather floating, and improves drying efficiency and equipment maintenance convenience.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a multifunctional dyeing and drying all-in-one machine for leather production, which comprises a case and a PLC (programmable logic controller) control structure, a leather soaking and dyeing device is mounted in the middle of the case, and drying components are mounted at two ends of the case in a sliding manner. According to the leather soaking and dyeing device, leather needing to be dyed is placed on the placing plate, the leather is soaked in dye liquor through lifting, the dye liquor makes full contact with the leather through soaking, deep penetration is achieved through the capillary action, the dye liquor naturally diffuses, no directional chromatic aberration exists, and the leather is slightly pressed through the screws and the pressing plates arranged at the two ends of the placing plate; by installing the push-and-pull drying assemblies, when the drying boxes at the two ends and the support are closed, the drained leather is dried through the dryer, the stability of the drying boxes can be kept through the first magnet and the second magnet, the drying assemblies at the two ends are separated through subsequent unfolding, and maintenance and cleaning are convenient.
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Description

Technical Field

[0001] This utility model relates to the field of leather production technology, specifically to a multifunctional dyeing and drying machine for leather production. Background Technology

[0002] The leather production dyeing and drying integrated machine is a piece of equipment that integrates dyeing and drying functions. It is mainly used in the leather processing process to achieve efficient dyeing and drying of leather through mechanical structure and automation technology.

[0003] The prior art, disclosed in patent document CN219430024U, discloses the following technical solution: a leather dyeing device, relating to the field of leather dyeing technology, wherein a set of rollers is movably inserted between opposite sides of two support plates, a transmission belt is driven between the outer walls of the set of rollers, a first motor is fixedly installed on one side of the outer wall of one of the two support plates, and the output end of the first motor is fixedly connected to one end of the outer wall of one of the rollers, and a dyeing mechanism and a drying mechanism are fixedly installed on the top of the two support plates respectively.

[0004] The above-mentioned technical solution can only spray dye on the upper surface of the leather using a spray bottle. However, as the leather is transported by the conveyor belt, thicker leathers may not be dyed evenly before entering the drying mechanism, and the reverse side of the leather may not be dyed thoroughly. Utility Model Content

[0005] The purpose of this utility model is to provide a multi-functional dyeing and drying machine for leather production, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a multi-functional dyeing and drying integrated machine for leather production, comprising a chassis and a PLC control structure, wherein a leather soaking and dyeing device is installed in the middle of the chassis, and drying components are slidably installed at both ends of the chassis.

[0007] The leather soaking and dyeing device includes a bracket, which is located in the middle of the upper part of the machine box. A threaded rod is provided in the groove of the rear side wall of the bracket through a bearing, and a guide rod is provided in the groove of the front side wall of the bracket. Movable blocks are sleeved on the outer walls of both the threaded rod and the guide rod. A connecting plate is provided on the outer side of each movable block through screws, and a placement plate is provided on the bottom side of the connecting plate through screws.

[0008] In the above technical solution, the leather to be dyed is placed on a placement plate, and is immersed in the dye solution by raising and lowering it. The soaking allows the dye solution to fully contact the leather, penetrate deeply through capillary action, and diffuse naturally without directional color difference.

[0009] L-shaped support plates are movably connected to the grooves at both ends of the placement plate via rotating shafts. Each L-shaped support plate is threaded with a screw on the other side, and a pressure plate is provided at the bottom of each screw.

[0010] In the above technical solution, the screws and pressure plates at both ends of the placement plate gently press the leather, thereby preventing the soaked leather from floating.

[0011] As a further preferred embodiment of this technical solution, a limiting groove is provided on the inner side wall of the chassis, and sliding grooves are provided on both the front and rear outer walls of the chassis, and a drain pipe is provided on one side of the bottom of the chassis.

[0012] As a further preferred embodiment of this technical solution, the outer surfaces of both sides of the bracket are provided with engagement grooves, and a magnet is provided inside each engagement groove.

[0013] As a further preferred embodiment of this technical solution, the placement plate is provided with limiting protrusions on both the front and rear sides, and the outer wall of the limiting protrusions is slidably connected to the inner wall of the limiting groove.

[0014] As a further preferred embodiment of this technical solution, the drying assembly includes a drying box, and each edge of the drying box near the support is provided with a second magnet. The second magnet is engaged in a locking groove and magnetically attracted to the first magnet. A dryer is installed on the top side inside the drying box.

[0015] In the above technical solution, the first and second magnets can maintain the stability of the drying box, and the subsequent unfolding allows the drying components at both ends to separate, which is convenient for maintenance and cleaning.

[0016] As a further preferred embodiment of this technical solution, the drying oven is provided with sliding plates on both side walls, and the outer wall of the sliding plate is slidably connected to the inner wall of the sliding groove.

[0017] As a further preferred embodiment of this technical solution, the PLC control structure is installed at the front end of the bracket and connected to the threaded rod drive mechanism and the dryer.

[0018] This utility model provides a multi-functional dyeing and drying machine for leather production, which has the following beneficial effects:

[0019] (1) This utility model installs a leather soaking and dyeing device, places the leather to be dyed on a placement plate, and immerses it in the dye solution by raising and lowering it. The soaking allows the dye solution to fully contact the leather, penetrate deeply through capillary action, and the dye solution diffuses naturally without directional color difference. The screws and pressure plates at both ends of the placement plate lightly press the leather, thereby preventing the soaked leather from floating.

[0020] (2) By installing a push-pull drying component, when the drying boxes at both ends are closed with the bracket, the drained leather is dried by the dryer. The first and second magnets can keep the drying box stable. The subsequent unfolding allows the drying components at both ends to separate, which is convenient for maintenance and cleaning. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the internal structure of this utility model;

[0023] Figure 3 This is a partial cross-sectional view of the present invention;

[0024] Figure 4 This is an enlarged view of Figure A of this utility model;

[0025] Figure 5 This is a schematic diagram of the drying assembly of this utility model;

[0026] In the diagram: 1. Chassis; 11. Limiting groove; 12. Sliding groove; 13. Drain pipe; 2. PLC control structure; 3. Leather soaking and dyeing device; 31. Bracket; 311. Engaging groove; 312. Magnet one; 32. Threaded rod; 33. Movable block; 34. Connecting plate; 35. Placement plate; 351. Limiting protrusion; 36. L-shaped support plate; 37. Screw; 38. Pressure plate; 4. Drying assembly; 41. Drying box; 42. Magnet two; 43. Sliding plate; 44. Dryer. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0028] This utility model provides a technical solution: such as Figure 1 and Figure 2 As shown in this embodiment, a multi-functional dyeing and drying machine for leather production includes a chassis 1 and a PLC control structure 2. The PLC control structure 2 is installed at the front end of the bracket 31 and is connected to the threaded rod 32 drive mechanism and the dryer 44. The PLC control structure 2 can integrate temperature control. A limit groove 11 is opened on the inner side wall of the chassis 1. Sliding grooves 12 are opened on the front and rear outer walls of the chassis 1. A drain pipe 13 is provided on one side of the bottom of the chassis 1. A leather soaking and dyeing device 3 is installed in the middle of the chassis 1. Drying components 4 are slidably installed at both ends of the chassis 1.

[0029] like Figure 2-3As shown, the leather soaking and dyeing device 3 includes a bracket 31, which is located in the middle of the upper part of the housing 1. A threaded rod 32 is provided in the groove of the rear side wall of the bracket 31 through a bearing, and a guide rod is provided in the groove of the front side wall of the bracket 31. Movable blocks 33 are fitted on the outer walls of both the threaded rod 32 and the guide rod. A connecting plate 34 is provided on the outer side of the movable block 33 through screws. A placement plate 35 is provided on the bottom side of the connecting plate 34 through screws. Limiting protrusions 351 are provided on both the front and rear sides of the placement plate 35. The outer wall of the limiting protrusions 351 is slidably connected to the inner wall of the limiting groove 11. By installing the leather soaking and dyeing device 3, the leather to be dyed is placed on the placement plate 35, and it is immersed in the dye solution by raising and lowering. The soaking allows the dye solution to fully contact the leather, penetrate deeply through capillary action, and the dye solution diffuses naturally without directional color difference.

[0030] like Figure 4 As shown, L-shaped support plates 36 are movably connected to the grooves at both ends of the placement plate 35 via rotating shafts. Screws 37 are threaded to the other side of each L-shaped support plate 36. Each screw 37 has a pressure plate 38 at its bottom. The screws 37 and pressure plates 38 at both ends of the placement plate 35 gently press the leather, thereby preventing the soaked leather from floating.

[0031] like Figure 5 As shown, the drying assembly 4 includes a drying chamber 41. Magnets 42 are provided on one edge of the drying chamber 41 near the support 31. Magnets 42 are engaged in the engaging groove 311 and magnetically attracted to magnet 312. A dryer 44 is installed on the top side inside the drying chamber 41. The dryer 44 uses hot air drying, provided by a fan. After being heated by a heater, the hot air passes through the leather for drying. An internal electric heating element, combined with an intelligent temperature control chip, ensures accurate temperature control. This is a matter of existing technology and will not be described further. The outer surfaces of both sides of the support 31... Each side of the drying chamber 41 is provided with a locking groove 311, and a magnet 312 is provided on the inner side of each locking groove 311. Each side wall of the drying chamber 41 is provided with a sliding plate 43, and the outer wall of the sliding plate 43 is slidably connected to the inner wall of the sliding groove 12. By installing the push-pull drying components 4, when the drying chambers 41 at both ends are closed with the bracket 31, the drained leather is dried by the dryer 44. The magnets 312 and 42 can keep the drying chamber 41 stable. The subsequent unfolding allows the drying components 4 at both ends to separate, which is convenient for maintenance and cleaning.

[0032] This utility model provides a multi-functional dyeing and drying machine for leather production. The specific working principle is as follows: The leather is spread out on the placement plate 35. The L-shaped support plates 36 at both ends are rotated so that the pressure plate 38 is above the leather. The screw 37 is rotated so that the pressure plate 38 presses lightly on the leather to prevent the leather from floating during the dyeing process. The PLC control structure 2 rotates the plate 32, thereby immersing the placement plate 35 into the dye solution. Then the drying chambers 41 at both ends are closed so that the drying chambers 41 are engaged in the locking grooves 311 and magnetically attracted to the magnet 312. After a few minutes, the dyeing is completed. The PLC control structure 2 removes the placement plate 35 from the dye solution and drains it for a while. Then the PLC control structure 2 starts the dryer 44 to dry the leather. After drying, the magnet 42 is opened to remove the leather.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-functional dyeing and drying integrated machine for leather production, comprising a chassis (1) and a PLC control structure (2), characterized in that: A leather soaking and dyeing device (3) is installed in the middle of the casing (1), and drying components (4) are slidably installed at both ends of the casing (1); The leather soaking and dyeing device (3) includes a bracket (31), which is located in the middle of the upper end of the machine box (1). A threaded rod (32) is provided in the groove of the rear side wall of the bracket (31) through a bearing. A guide rod is provided in the groove of the front side wall of the bracket (31). Movable blocks (33) are sleeved on the outer walls of the threaded rod (32) and the guide rod. A connecting plate (34) is provided on the outer side of the movable block (33) through screws. A placement plate (35) is provided on the bottom side of the connecting plate (34) through screws. L-shaped support plates (36) are movably connected to the grooves at both ends of the placement plate (35) via rotating shafts. A screw (37) is threaded to the other side of each L-shaped support plate (36), and a pressure plate (38) is provided at the bottom of each screw (37).

2. The multifunctional dyeing and drying integrated machine for leather production according to claim 1, characterized in that: The inner side wall of the chassis (1) is provided with a limiting groove (11), and the outer walls of the front and rear sides of the chassis (1) are provided with sliding grooves (12). A drain pipe (13) is provided on one side below the chassis (1).

3. The multifunctional dyeing and drying integrated machine for leather production according to claim 1, characterized in that: The bracket (31) has engagement grooves (311) on both outer surfaces, and magnets (312) are provided inside the engagement grooves (311).

4. The multifunctional dyeing and drying integrated machine for leather production according to claim 1, characterized in that: The placement plate (35) is provided with limiting protrusions (351) on both the front and rear sides, and the outer wall of the limiting protrusions (351) and the inner wall of the limiting groove (11) are slidably connected.

5. The multifunctional dyeing and drying integrated machine for leather production according to claim 1, characterized in that: The drying assembly (4) includes a drying box (41). Each drying box (41) is provided with a magnet (42) on one side edge near the support (31). The magnet (42) is engaged in the engaging groove (311) and magnetically attracted to the magnet (312). A dryer (44) is installed on the top side inside the drying box (41).

6. The multifunctional dyeing and drying integrated machine for leather production according to claim 5, characterized in that: The drying oven (41) has sliding plates (43) on both sides of its sidewalls, and the outer wall of the sliding plate (43) is slidably connected to the inner wall of the sliding groove (12).

7. The multifunctional dyeing and drying integrated machine for leather production according to claim 1, characterized in that: The PLC control structure (2) is installed at the front end of the bracket (31) and connected to the threaded rod (32) drive mechanism and the dryer (44).