Wet impregnation production line for leather

Abstract

The utility model discloses a leather wet-process impregnation production line, which relates to the technical field of synthetic leather processing and comprises an impregnation tank, a first guide roller component used for leading in base cloth is arranged at the left end of the impregnation tank, and a second guide roller component used for leading out the base cloth is arranged at the right end of the impregnation tank. A plurality of compression roller assemblies and a plurality of guide rollers which are arranged at intervals in the left-right direction are arranged in the impregnation tank, one guide roller is arranged below the middle part between every two adjacent compression roller assemblies, each compression roller assembly comprises a first compression roller and a second compression roller which are stacked up and down, and a plurality of annular bulges which are arranged at intervals in the axial direction are convexly arranged on the peripheral surface of each first compression roller; a plurality of annular grooves which are arranged at intervals in the axial direction and are used for the annular bulges to enter are concavely formed in the peripheral surface of the second compression roller; and a stirring assembly for driving slurry at the bottom of the impregnation tank to flow is arranged below the guide roller. According to the utility model, air in the base cloth can be exhausted, the generation of bubbles is reduced, the flowing of slurry at the bottom of the impregnation tank can be promoted, and the condition of slurry precipitation is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of synthetic leather processing, in particular to a wet impregnation production line for leather. Background Art

[0002] Synthetic leather, a key industrial material, is widely used in a variety of applications, including clothing, footwear, furniture, and automotive interiors. The wet impregnation process is a crucial step in its production. During this process, the base fabric is guided by guide rollers into the impregnation tank below the liquid level. Subsequently, the press roller assembly within the tank repeatedly impregnates the base fabric, ensuring that the slurry in the tank evenly penetrates the fibers of the base fabric, achieving uniform coating on both sides.

[0003] However, in actual production operations, as the base fabric is continuously fed into the impregnation tank, air inevitably enters the slurry during this process. Over time, this air accumulates within the tank, forming bubbles that adhere to the surface of the base fabric, leading to defects such as pinholes on the finished synthetic leather. Furthermore, the slurry in the tank is prone to sedimentation over extended periods of use, which not only affects the uniform distribution of the slurry but also compromises the quality of the base fabric impregnation process.

[0004] In view of this, the inventor conducted in-depth research on the above-mentioned issues, which led to the creation of this case. Utility Model Content

[0005] The utility model provides a wet impregnation production line for leather, aiming to solve the problems of bubbles adhering to the surface of the base cloth and easy precipitation of slurry in the existing impregnation process.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] A leather wet impregnation production line includes an impregnation tank, with the length direction of the impregnation tank as the left-right direction. The left end of the impregnation tank is provided with a first guide roller assembly for introducing a base cloth, and the right end is provided with a second guide roller assembly for leading out the base cloth. The impregnation tank is provided with a plurality of pressure roller assemblies and a plurality of guide rollers arranged at intervals along the left-right directions. The guide roller is provided below the middle between two adjacent pressure roller assemblies. The pressure roller assembly includes a first pressure roller and a second pressure roller stacked up and down. The outer peripheral surface of the first pressure roller is convexly provided with a plurality of annular protrusions arranged at intervals along the axial direction, and the outer peripheral surface of the second pressure roller is concavely provided with a plurality of annular grooves arranged at intervals along the axial direction for the annular protrusions to enter; a stirring assembly for driving the slurry at the bottom of the impregnation tank to flow is provided below the guide roller.

[0008] Furthermore, the annular protrusion is semicircular, the annular groove matches the shape of the annular protrusion, and the edges where the annular protrusion contacts the annular groove are both provided with arc chamfers.

[0009] Furthermore, the first pressing roller and the second pressing roller are both arranged horizontally along the front-to-back direction.

[0010] Furthermore, the outer peripheral surfaces of the plurality of guide rollers are smooth, and the plurality of guide rollers are arranged horizontally along the front-to-back direction.

[0011] Furthermore, the stirring assembly includes at least one stirring roller arranged horizontally along the front-to-back direction, and the outer peripheral surface of the stirring roller is provided with a spiral stirring blade, and the stirring blade extends from one end of the stirring rod to the other end.

[0012] Furthermore, the first guide roller assembly includes two upright first vertical plates, with a first guide roller provided between the two first vertical plates; the second guide roller assembly includes two upright second vertical plates, with two second guide rollers stacked up and down provided between the two second vertical plates.

[0013] From the above description of the structure of the utility model, it can be seen that the utility model has the following advantages:

[0014] Firstly, the utility model causes the annular protrusion to rotate in the annular groove by synchronously rotating the first pressing roller and the second pressing roller of the pressing roller assembly, thereby forming a squeezing effect, which can effectively discharge the air in the base cloth, reduce the generation of bubbles, and enable the slurry to be evenly impregnated into the base cloth, avoiding pinhole defects on the surface of the finished synthetic leather; and the stirring assembly can also promote the flow of slurry at the bottom of the impregnation tank when rotating, avoiding the precipitation of slurry, ensuring the uniformity and stability of the slurry, and ensuring the overall quality of the base cloth impregnation process.

[0015] Secondly, the outer peripheral surface of the stirring roller of the utility model is provided with a spiral stirring blade. When the stirring rod rotates, the stirring blade can promote the flow of the slurry in the impregnation tank, avoid the sedimentation of the slurry, and accelerate the bursting of bubbles in the slurry. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the layout structure of the utility model.

[0017] Figure 2 It is a partial cross-sectional view of the present utility model.

[0018] Figure 3 It is a schematic diagram of the overall structure of the utility model.

[0019] Figure 4 This is a structural schematic diagram of the pressure roller assembly of the utility model.

[0020] Figure 5 This is a schematic structural diagram of the first pressing roller of the utility model.

[0021] Figure 6 This is a structural schematic diagram of the second pressing roller of the utility model.

[0022] Figure 7 This is a schematic structural diagram of the stirring roller of the present utility model.

[0023] Figure markings: 10-impregnation tank; 20-first guide roller assembly; 21-first vertical plate; 22-first guide roller; 30-second guide roller assembly; 31-second vertical plate; 32-second guide roller; 40-pressure roller assembly; 41-first pressure roller; 411-annular protrusion; 42-second pressure roller; 421-annular groove; 50-guide roller; 60-stirring roller; 61-stirring blade. DETAILED DESCRIPTION

[0024] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0025] Reference Figures 1 to 3 A wet impregnation production line for leather comprises a rectangular impregnation tank 10, the top surface of which is concavely provided with a cavity for accommodating slurry. With the length direction of the impregnation tank 10 as the left and right direction, the left end of the impregnation tank 10 is provided with a first guide roller assembly 20 for introducing the base cloth, and the right end is provided with a second guide roller assembly 30 for leading out the base cloth. The impregnation tank 10 is provided with a plurality of pressure roller assemblies 40 and a plurality of guide rollers 50 arranged at intervals along the left and right directions. A guide roller 40 is provided at the lower middle portion between two adjacent pressure roller assemblies 40. The base cloth is wound around After passing the first guide roller assembly 20, it goes downward around the guide roller 50, then changes direction and goes upward around the pressure roller assembly 40 and repeats the process. The pressure roller assembly 40 includes a first pressure roller 41 and a second pressure roller 42 stacked up and down, wherein the outer peripheral surface of the first pressure roller 41 is convexly provided with a plurality of annular protrusions 411 arranged at intervals along the axial direction, and the outer peripheral surface of the second pressure roller 42 is concavely provided with a plurality of annular grooves 421 arranged at intervals along the axial direction for the above-mentioned annular protrusions 411 to enter, and a stirring assembly for driving the flow of slurry at the bottom of the impregnation tank 10 is provided below the guide roller 50.

[0026] When in use, the first pressing roller 41 and the second pressing roller 42 of the pressing roller assembly 40 rotate synchronously so that the annular protrusion 411 rotates in the annular groove 421, thereby forming a squeezing effect, which can effectively discharge the air on the base cloth, reduce the generation of bubbles, and enable the slurry to be evenly impregnated into the base cloth, avoiding pinhole defects on the surface of the finished synthetic leather. In addition, the stirring assembly can also drive the slurry at the bottom of the impregnation tank 10 to flow when rotating, avoiding the precipitation of the slurry, ensuring the uniformity and stability of the slurry, and ensuring the overall quality of the base cloth impregnation process.

[0027] Reference Figures 1 to 6 The first pressing roller 41 and the second pressing roller 42 are both arranged horizontally along the front-to-back direction. The annular protrusion 411 is semicircular, the annular groove 421 is consistent with the shape of the annular protrusion 411, and the edges where the annular protrusion 411 contacts the annular groove 421 are provided with arc chamfers. Through such an arrangement, the damage to the base fabric during extrusion can be reduced; the outer peripheral surfaces of the multiple guide rollers 50 are smooth, and the multiple guide rollers 50 are all arranged horizontally along the front-to-back direction. Through such an arrangement, the base fabric is squeezed by the pressing roller assembly 40 and then wrapped around the guide roller 50, which can help smooth the squeezed base fabric, eliminate wrinkles that may be generated during the extrusion process, ensure that the surface of the base fabric remains smooth, and further discharge residual bubbles in the base fabric.

[0028] Reference Figures 1 to 7 The stirring assembly includes at least one stirring roller 60 arranged horizontally along the front-to-back direction, and the outer peripheral surface of the stirring roller 60 is provided with a spiral stirring blade 61, and the stirring blade 61 extends from one end of the stirring rod 60 to the other end. In this embodiment, the stirring assembly includes three stirring rollers 60 arranged at intervals along the left-right direction, and the three stirring rollers 60 are all arranged horizontally along the front-to-back direction. Through such an arrangement, the flow rate of the slurry at the bottom of the impregnation tank 10 can be greatly improved, and the bubbles in the slurry can be brought to the surface of the slurry, making the bubbles easier to burst, and the spiral stirring blade 61 will also apply shear force when rotating, further promoting the bursting of bubbles.

[0029] Reference Figures 1 to 7 The first guide roller assembly 20 includes two upright first vertical plates 21, and a first guide roller 22 is provided between the two first vertical plates 21; the second guide roller assembly 30 includes two upright second vertical plates 31, and two second guide rollers 32 stacked up and down are provided between the two second vertical plates 31. It should be noted here that since it is an existing conventional technology to drive the first guide roller assembly 20, the second guide roller assembly 30, the pressure roller assembly 40, the guide roller 50 and the stirring roller 60 to rotate by a motor, it is not described in detail here.

[0030] The above is only a specific implementation method of the present invention, but the design concept of the present invention is not limited to this. Any non-substantial changes to the present invention using this concept shall be deemed as an infringement of the protection scope of the present invention.

Claims

1. A leather wet impregnation production line, comprising an impregnation tank, wherein the left end of the impregnation tank is provided with a first guide roller assembly for introducing a base fabric, and the right end of the impregnation tank is provided with a second guide roller assembly for guiding the base fabric out, with the length direction of the impregnation tank being the left and right directions. The invention is characterized in that: The impregnation tank is provided with a plurality of pressure roller assemblies and a plurality of guide rollers arranged at intervals along the left and right directions, and a guide roller is provided below the middle between two adjacent pressure roller assemblies. The pressure roller assembly includes a first pressure roller and a second pressure roller stacked up and down, the outer peripheral surface of the first pressure roller is convexly provided with a plurality of annular protrusions arranged at intervals along the axial direction, and the outer peripheral surface of the second pressure roller is concavely provided with a plurality of annular grooves arranged at intervals along the axial direction for the annular protrusions to enter; a stirring assembly for driving the flow of slurry at the bottom of the impregnation tank is provided below the guide roller.

2. The leather wet impregnation production line according to claim 1, characterized in that: The annular protrusion is semicircular, the annular groove matches the shape of the annular protrusion, and the edges of the annular protrusion and the annular groove that are in contact are both provided with arc chamfers.

3. The leather wet impregnation production line according to claim 1, characterized in that: The first pressing roller and the second pressing roller are both arranged horizontally along the front-to-back direction.

4. The leather wet impregnation production line according to claim 1, characterized in that: The outer peripheral surfaces of the plurality of guide rollers are smooth, and the plurality of guide rollers are arranged horizontally along the front-to-back direction.

5. The leather wet impregnation production line according to claim 1, characterized in that: The stirring assembly includes at least one stirring roller arranged horizontally along the front-back direction. The outer peripheral surface of the stirring roller is provided with a spiral stirring blade, and the stirring blade extends from one end of the stirring rod to the other end.

6. The leather wet impregnation production line according to claim 1, characterized in that: The first guide roller assembly includes two upright first vertical plates, with a first guide roller arranged between the two first vertical plates; the second guide roller assembly includes two upright second vertical plates, with two second guide rollers stacked up and down arranged between the two second vertical plates.

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