Dyeing device for leather processing

Abstract

The utility model relates to the field of leather processing, and discloses a leather processing dyeing device which comprises a dyeing box, the dyeing box is provided with a feeding port and a discharging port for a leather body to penetrate through, and the dyeing box is internally provided with a spraying assembly for dyeing the leather body and a driving assembly for enabling the spraying assembly to reciprocate in the dyeing box; the two spraying assemblies are alternately matched with the extrusion assembly, when the spraying assemblies conduct spraying, electric telescopic rods contract to enable an upper pressing roller and a lower pressing roller to be tightly attached to the upper surface and the lower surface of a leather body, reciprocating movement of the spraying assemblies is matched with extrusion of the upper pressing roller and the lower pressing roller to the leather body, the dyeing process can be continuously conducted, and the dyeing efficiency is improved. The spraying assembly can control the spraying amount of the dye to ensure that the dye uniformly covers the surface of the leather body, the problem of uneven dyeing caused by traditional soaking type dyeing is avoided, the upper pressing roller and the lower pressing roller immediately extrude the leather after spraying, the dye can better permeate pores of the leather body, and therefore the dyeing depth and uniformity are ensured.

Description

Technical Field

[0001] The present application relates to the field of leather processing, and particularly to a leather processing and dyeing device. Background Art

[0002] Leather processing and dyeing is an important link in the leather manufacturing process. It not only gives the leather an aesthetic appearance but also improves the performance of the leather.

[0003] In existing leather processing and dyeing, the leather is often immersed in the dyeing solution. During the immersion dyeing process, the dye will not be evenly distributed over all parts of the leather. Especially for thick leather or leather with a complex structure, the internal area may be under-dyed, resulting in color differences. To solve the above problems, a leather processing and dyeing device is proposed herein.

[0004] The above information disclosed in this background art is only used to increase the understanding of the background art of the present application. Therefore, it may include prior art that is not known to those of ordinary skill in the art. Utility Model Content

[0005] To solve the leather processing problems, the present application provides a leather processing and dyeing device.

[0006] The leather processing and dyeing device provided by the present application adopts the following technical solutions:

[0007] A leather processing and dyeing device includes a dyeing tank. The dyeing tank is provided with a feed inlet and a discharge outlet through which a leather body passes. Inside the dyeing tank, there is a spraying assembly for dyeing the leather body and a driving assembly for reciprocatingly moving the spraying assembly in the dyeing tank. There are two groups of the spraying assemblies, and an extrusion assembly with an adjustable spacing is provided between the two groups of spraying assemblies. The extrusion assembly is also fixed on the driving assembly, and the two groups of spraying assemblies alternately cooperate with the extrusion assembly.

[0008] The extrusion assembly includes an extrusion bracket, a first connecting plate, a second connecting plate, an electric telescopic rod, an upper pressing roller, and a lower pressing roller. The extrusion bracket is fixed to the driving assembly. The first connecting plate is fixed on the extrusion bracket. The electric telescopic rod is fixed on the first connecting plate. The telescopic end of the electric telescopic rod is fixed to the second connecting plate. The upper pressing roller rotates on the first connecting plate, and the lower pressing roller rotates on the second connecting plate. The leather body passes between the upper pressing roller and the lower pressing roller.

[0009] Preferably, the spraying assembly includes a spraying pipe, a nozzle, and a spraying bracket. The spraying bracket is fixed to the driving assembly. The spraying pipe is fixed on the spraying bracket. The nozzle is fixed on the spraying pipe. The extrusion bracket is located between the two spraying brackets.

[0010] Preferably, the driving assembly includes a lead screw, a guide rod, a slider and a motor. A chute is provided on the dyeing tank. The lead screw rotates in the chute, and the guide rod is fixed in the chute. Both the spraying bracket and the pressing bracket are fixed to the slider. The slider is threadedly connected to the lead screw and is in clearance fit with the guide rod. The motor is fixed on the dyeing tank, and the end of the rotor of the motor is fixed to the lead screw.

[0011] Preferably, a sliding groove for the sliding of the conveying pipe is provided on the dyeing tank. One end of the conveying pipe communicates with the spraying pipe. A dye solution tank is provided on the dyeing tank. The other end of the conveying pipe communicates with the dye solution tank. An electromagnetic valve is provided on the conveying pipe.

[0012] Preferably, a supporting plate is provided at the top end of the slider, and the dye solution tank is fixed on the supporting plate.

[0013] Preferably, a guide roller is provided in the dyeing tank.

[0014] Preferably, a liquid leakage hopper is provided in the dyeing tank, and a collecting box is provided at the bottom end inside the dyeing tank. The liquid leakage hopper communicates with the inner cavity of the collecting box, and the liquid leakage hopper is located below the guide roller.

[0015] In summary, compared with the related art, the present utility model has the following beneficial effects:

[0016] By providing two sets of spraying assemblies that can reciprocate in the dyeing tank, an extrusion assembly with adjustable spacing is provided in the two sets of spraying assemblies. The extrusion assembly is also fixed on the driving assembly. The two sets of spraying assemblies alternately cooperate with the extrusion assembly. When the driving assembly drives the spraying assembly to approach the discharge port, the spraying assembly close to the discharge port sprays. When moving in the reverse direction, the spraying assembly close to the discharge port sprays. When the spraying assembly sprays, the electric telescopic rod contracts to make the upper pressing roller and the lower pressing roller closely adhere to the upper and lower surfaces of the leather body. Compared with the related art, the reciprocating movement of the spraying assembly in cooperation with the extrusion of the upper pressing roller and the lower pressing roller on the leather body enables the dyeing process to be continuous. The spraying assembly can control the spraying amount of the dye to ensure that the dye uniformly covers the surface of the leather body, avoiding the problem of uneven dyeing in traditional immersion dyeing. The upper pressing roller and the lower pressing roller immediately extrude the leather after spraying, which helps the dye to better penetrate the pores of the leather body, thereby ensuring the dyeing depth and uniformity. Description of the Drawings

[0017] Figure 1 is a schematic side sectional structure diagram of an embodiment of the application;

[0018] Figure 2 is Figure 1 the enlarged structure diagram at A in

[0019] Figure 3 is the overall structure diagram of an embodiment of the application;

[0020] Figure 4 It is a schematic upward-looking sectional structure diagram of an application embodiment.

[0021] Explanation of reference numerals: 1. Dyeing box; 101. Leather body; 2. Support plate; 3. Dyeing solution tank; 4. Sliding groove; 5. Feed port; 6. Discharge port; 7. Guide roller; 8. Delivery pipe; 9. Spraying pipe; 10. Nozzle; 11. Spraying bracket; 12. Squeezing bracket; 13. Connecting plate one; 14. Connecting plate two; 15. Electric telescopic rod; 16. Upper pressing roller; 17. Lower pressing roller; 18. Solenoid valve; 19. Lead screw; 20. Guide rod; 21. Slide block; 22. Motor; 23. Liquid leakage hopper; 24. Collection box. Detailed implementation manners

[0022] The following further elaborates on this application in conjunction with the attached Figures 1-4 to further illustrate this application in detail.

[0023] The embodiment of this application discloses a leather processing and dyeing device. Referring to Figures 1-4 , a leather processing and dyeing device includes a dyeing box 1. The dyeing box 1 is provided with a feed port 5 and a discharge port 6 through which the leather body 101 passes. Inside the dyeing box 1, there is a spraying assembly for dyeing the leather body 101 and a driving assembly for reciprocatingly moving the spraying assembly in the dyeing box 1. There are two groups of spraying assemblies, and between the two groups of spraying assemblies, there is a squeezing assembly with adjustable spacing. The squeezing assembly is also fixed on the driving assembly, and the two groups of spraying assemblies alternately cooperate with the squeezing assembly;

[0024] The squeezing assembly includes a squeezing bracket 12, a connecting plate one 13, a connecting plate two 14, an electric telescopic rod 15, an upper pressing roller 16, and a lower pressing roller 17. The squeezing bracket 12 is fixed to the driving assembly, the connecting plate one 13 is fixed on the squeezing bracket 12, the electric telescopic rod 15 is fixed on the connecting plate one 13, the telescopic end of the electric telescopic rod 15 is fixed to the connecting plate two 14, the upper pressing roller 16 rotates on the connecting plate one 13, the lower pressing roller 17 rotates on the connecting plate two 14, and the leather body 101 passes between the upper pressing roller 16 and the lower pressing roller 17;

[0025] Inside the dyeing box 1, a guide roller 7 is rotatably provided;

[0026] It should be noted that the guide roller 7 is also provided with an electric telescopic rod 15 with adjustable spacing (not shown in the figure);

[0027] By adopting the above technical solution, the leather body 101 enters the dyeing tank 1 through the feed inlet 5. When passing through the guide roller 7, the electric telescopic rod 15 expands and contracts to make the upper pressing roller 16 and the lower pressing roller 17 closely adhere to the surface of the leather body 101. The spraying assembly near the discharge outlet 6 operates first for spraying. After spraying, the upper pressing roller 16 and the lower pressing roller 17 promptly squeeze the sprayed leather body 101, so that the sprayed dyeing liquid quickly spreads. To ensure uniform and thorough dyeing, when the spraying assembly moves to one side of the discharge outlet 6, it moves in the reverse direction. At this time, the spraying assembly near the feed inlet 5 drives the spraying. After spraying, the upper pressing roller 16 and the lower pressing roller 17 also promptly squeeze the sprayed leather body 101, accelerating the penetration of the dyeing liquid into the pores of the leather body 101 and ensuring uniform dyeing.

[0028] Refer to Figure 1 , the spraying assembly includes a spraying pipe 9, a spray head 10, and a spraying support 11. The spraying support 11 is fixed to the driving assembly. The spraying pipe 9 is fixed on the spraying support 11, and the spray head 10 is fixed on the spraying pipe 9. The pressing support 12 is located between the two spraying supports 11;

[0029] By adopting the above technical solution, the driving assembly drives the spraying support 11 and the spray head 10 thereon to reciprocate in the dyeing tank 11 to spray an appropriate amount of dyeing liquid onto the leather body 101.

[0030] Refer to Figure 1 , 4 , the driving assembly includes a lead screw 19, a guide rod 20, a slider 21, and a motor 22. A sliding groove is provided on the dyeing tank 1. The lead screw 19 rotates in the sliding groove, and the guide rod 20 is fixed in the sliding groove. Both the spraying support 11 and the pressing support 12 are fixed to the slider 21. The slider 21 is respectively threadedly connected to the lead screw 19 and has a clearance fit with the guide rod 20. The motor 22 is fixed on the dyeing tank 1, and the rotor end of the motor 22 is fixed to the lead screw 19;

[0031] By adopting the above technical solution, starting the motor 22 causes the lead screw 19 to rotate. Under the guiding action of the guide rod 20, the slider 21 drives the spraying support 11 and the pressing support 12 thereon to reciprocate in the dyeing tank 1, realizing uniform dyeing of the leather body 101.

[0032] Refer to Figure 1 , 4 , a sliding groove 4 for the sliding of the conveying pipe 8 is provided on the dyeing tank 1. One end of the conveying pipe 8 communicates with the spraying pipe 9. A dyeing liquid tank 3 is provided on the dyeing tank 1. The other end of the conveying pipe 8 communicates with the dyeing liquid tank 3. An electromagnetic valve 18 is provided on the conveying pipe 8;

[0033] A support plate 2 is provided at the top of the slider 21, and the dyeing liquid tank 3 is fixed on the support plate 2;

[0034] By adopting the above technical solution, when the slider 21 moves driven by the motor 22, the dyeing liquid tank 3 moves together with the slider 21 under the support of the pallet 2. The solenoid valve 18 is energized and opened, so that an appropriate amount of dyeing liquid enters the spraying pipe 9 through the conveying pipe 8. After inputting an appropriate amount of dyeing liquid, the solenoid valve 18 is de-energized and closed.

[0035] Refer to Figure 1 , a liquid leakage hopper 23 is provided in the dyeing box 1, and a collection box 24 is provided at the bottom end inside the dyeing box 1. The liquid leakage hopper 23 communicates with the inner cavity of the collection box 24, and the liquid leakage hopper 23 is located below the guide roller 7;

[0036] By adopting the above technical solution, when the upper pressing roller 16 and the lower pressing roller 17 squeeze the leather body 101, the excess dyeing liquid will enter the collection box 24 through the liquid leakage hopper 23, which is convenient for recycling and reuse.

[0037] The implementation principle of a leather processing and dyeing device according to an embodiment of the present application is as follows: When in use, the leather body 101 enters the dyeing box 1 from the feed port 5 and passes through the guide roller 7. For the first spraying, the electric telescopic rod 15 on the shrinkage and extrusion bracket 12 is first retracted to press the upper pressing roller 16 and the lower pressing roller 17 against the leather body 101, which can play a traction role. At this time, the solenoid valve 18 near the feed port 5 is energized and opened, so that the dyeing liquid is sprayed on the leather body 101 through the nozzle 10. The motor 22 is started to move the spraying bracket 11 and the extrusion bracket 12 in the dyeing box 1 to be close to the discharge port 6. The leather body 101 passes through the guide roller 7 near the discharge port 6, and the electric telescopic rod 15 on the guide roller 7 shrinks, so that the guide roller 7 temporarily plays a role of clamping and fixing. The motor 22 rotates in reverse to move the spraying bracket 11 and the extrusion bracket 12 closer to the feed port 5. At this time, the nozzle 10 near the feed port 5 sprays again, and the upper pressing roller 16 and the lower pressing roller 17 gently press the leather body 101 to accelerate the rapid and uniform penetration of the dyeing liquid. When approaching the feed port 5, the electric telescopic rod 15 on the guide roller 7 near the feed port 5 shrinks, so that the guide roller 7 temporarily plays a role of clamping and fixing. The motor 22 rotates forward. At this time, the nozzle 10 near the discharge port 6 sprays, and the upper pressing roller 16 and the lower pressing roller 17 continuously gently press the leather body 101 until the dyeing is uniform. After completion, it can be discharged through the discharge port 6.

[0038] Finally, several points should be noted: First, in the description of the present application, it should be noted that unless otherwise specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense, which can be a mechanical connection or an electrical connection, or the communication inside two components, and can be directly connected. The terms "upper", "lower", "left", "right", etc. are only used to represent the relative position relationship. When the absolute position of the object being described changes, the relative position relationship may change;

[0039] Secondly: In the attached drawings of the disclosed embodiments of the present utility model, only the structures related to the disclosed embodiments are involved. For other structures, reference can be made to the general design. Without conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0040] Finally: The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

[0041] The above are all the preferred embodiments of this application, and do not limit the protection scope of this application accordingly. Therefore, any equivalent changes made according to the structure, shape, and principle of this application shall be covered within the protection scope of this application.

Claims

1. A leather processing and dyeing device, comprising a dyeing tank (1), characterized in that: The dyeing box (1) is provided with a feed inlet (5) and a discharge outlet (6) for the leather body (101) to pass through. Inside the dyeing box (1), there is a spraying assembly for dyeing the leather body (101) and a driving assembly for reciprocatingly moving the spraying assembly in the dyeing box (1). There are two groups of the spraying assemblies, and an extrusion assembly with an adjustable spacing is arranged between the two groups of spraying assemblies. The extrusion assembly is also fixed on the driving assembly, and the two groups of spraying assemblies alternately cooperate with the extrusion assembly; The extrusion assembly includes an extrusion bracket (12), a first connecting plate (13), a second connecting plate (14), an electric telescopic rod (15), an upper pressing roller (16), and a lower pressing roller (17). The extrusion bracket (12) is fixed to the driving assembly. The first connecting plate (13) is fixed on the extrusion bracket (12). The electric telescopic rod (15) is fixed on the first connecting plate (13). The telescopic end of the electric telescopic rod (15) is fixed to the second connecting plate (14). The upper pressing roller (16) rotates on the first connecting plate (13), and the lower pressing roller (17) rotates on the second connecting plate (14). The leather body (101) passes between the upper pressing roller (16) and the lower pressing roller (17).

2. The leather processing and dyeing device according to claim 1, characterized in that: The spraying assembly includes a spraying pipe (9), a nozzle (10), and a spraying bracket (11). The spraying bracket (11) is fixed to the driving assembly. The spraying pipe (9) is fixed on the spraying bracket (11). The nozzle (10) is fixed on the spraying pipe (9). The extrusion bracket (12) is located between the two spraying brackets (11).

3. A leather processing and dyeing device according to claim 2, characterized in that: The driving assembly includes a lead screw (19), a guide rod (20), a slider (21), and a motor (22). The dyeing box (1) is provided with a sliding groove. The lead screw (19) rotates in the sliding groove. The guide rod (20) is fixed in the sliding groove. Both the spraying bracket (11) and the extrusion bracket (12) are fixed to the slider (21). The slider (21) is respectively threadedly connected to the lead screw (19) and is in clearance fit with the guide rod (20). The motor (22) is fixed on the dyeing box (1), and the rotor end of the motor (22) is fixed to the lead screw (19).

4. A leather processing and dyeing device according to claim 3, characterized in that: A sliding groove (4) for the sliding of a delivery pipe (8) is formed on the dyeing box (1). One end of the delivery pipe (8) communicates with the spraying pipe (9). A dyeing liquid tank (3) is provided on the dyeing box (1). The other end of the delivery pipe (8) communicates with the dyeing liquid tank (3). An electromagnetic valve (18) is provided on the delivery pipe (8).

5. A leather processing and dyeing device according to claim 4, characterized in that: A support plate (2) is provided at the top of the slider (21). The dyeing liquid tank (3) is fixed on the support plate (2).

6. The leather processing and dyeing device according to claim 1, characterized in that: A guide roller (7) is provided inside the dyeing box (1).

7. A leather processing and dyeing device according to claim 6, characterized in that: A liquid leakage hopper (23) is provided inside the dyeing box (1). A collection box (24) is provided at the bottom end inside the dyeing box (1). The liquid leakage hopper (23) communicates with the inner cavity of the collection box (24). The liquid leakage hopper (23) is located below the guide roller (7).

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