CN110592297B

CN110592297B - Leather dyeing process

Info

Publication number: CN110592297B
Application number: CN201911019947.6A
Authority: CN
Inventors: 周典航; 金结娥; 孙信
Original assignee: Tongxiang Hengrun fur Co ltd
Current assignee: TONGXIANG HENGRUN FUR Co.,Ltd.
Priority date: 2019-10-24
Filing date: 2019-10-24
Publication date: 2022-01-21
Anticipated expiration: 2039-10-24
Also published as: CN110592297A

Abstract

The invention belongs to the technical field of leather processing technology, in particular to a leather dyeing technology; s1: inserting small dermis into an opening mesh plate arranged in the movable basket in a vertical insertion mode; s2: inserting the movable basket in the step S1 into a dye vat, injecting distilled water into the dye vat, controlling the water level of the distilled water to be flush with the upper surface of the mounting rack, and controlling the movable basket to shake left and right in the dye vat in a reciprocating manner through a driving device; s3: pouring a dye agent into the dye vat, controlling the movable basket to slowly shake left and right in the vat body at intervals through a driving device, and placing the movable basket in a dark and ventilated place for drying after coloring; s4: spreading the dried dyed dermis obtained in the step S3, uniformly coating wax water on the surface of the dyed dermis, and drying to obtain the dyed dermis; when the movable basket rocks, impact force on liquid is applied to the movable basket, so that the liquid enters the movable basket through the liquid guide groove, the dermis can be in rotational contact with the dye liquor, and the dyeing effect of the dye liquor on the dermis is further improved.

Description

Leather dyeing process

Technical Field

The invention belongs to the technical field of leather processing technology, and particularly relates to a leather dyeing technology.

Background

With the continuous improvement of social and economic life, the quality requirements of people on life are higher and higher, and especially the requirements on home textiles and decorative fabrics of sofas, curtains, bedding articles and the like are higher and higher, especially leather sofa fabrics. The genuine leather sold on the market is colorful and dazzling, and the color on the clothes is mostly made of chemical dye and then colored.

Many current methods of dyeing the dermis are based on the dyeing being done, and the simplest form of dyeing is to place the dermis in a dye solution, the dye is absorbed by the dermis and the dye solution is seen to fade away from its color and the resultant hide dye color becomes darker.

When the dyeing method is used for dyeing small or small-area dermis, the phenomenon of uneven dyeing or difficult effective impregnation of dye liquor on the dermis is easily caused when the dermis is dyed due to the placement form of the dermis in the dye vat, and the quality of the dyed dermis is further influenced.

Disclosure of Invention

In order to make up for the defects of the prior art, the invention provides a dermis dyeing process which is mainly used for solving the problems that when a small or small dermis is dyed by the existing dyeing method, the placing form of the dermis in a dye vat easily causes the phenomenon that the dermis is dyed unevenly or dye liquor is difficult to be effectively dip-dyed on the dermis, and further the quality of the dyed dermis is influenced.

The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a dermis dyeing process, which comprises the following steps:

s1: leather installation: inserting small dermis into an opening mesh plate arranged in the movable basket in a vertical insertion mode; the movable basket is arranged in the movable basket in a vertical insertion mode; when the movable basket swings left and right in the dye vat in a reciprocating mode, the liquid can be fully contacted with the outer wall of the leather, meanwhile, the movable basket swings to impact force on the liquid, so that the liquid enters the movable basket through the liquid guide groove, meanwhile, the installation mesh plate can rotate in the movable basket due to the impact force of the liquid, the soaking effect of distilled water on the leather can be improved, and the dyeing effect of a dyeing agent on the leather can be improved;

s2: soaking dermis: inserting the movable basket in the step S1 into a dye vat, injecting distilled water into the dye vat, controlling the water level of the distilled water to be flush with the upper surface of the mounting rack, and controlling the movable basket to shake left and right in the dye vat in a reciprocating manner through a driving device;

s3: coloring the leather: pouring a dye agent into a dye vat, controlling the movable basket to slowly shake left and right in the vat body at intervals in a reciprocating manner through a driving device, and placing the movable basket in a dark and ventilated place for airing after coloring to obtain dyed leather;

s4: and (3) leather color fixation: and (5) spreading the dried dyed dermis obtained in the step (S3), uniformly coating wax water on the surface of the dyed dermis, and drying to obtain the dyed dermis.

Preferably, in step S3, the left-right reciprocating shaking time of the movable basket is 5-8 minutes, the movable basket stops for 3 minutes, and the movable basket shakes four times in total; the movable basket shakes in the dye vat in a mode that the interval is slow, so that the contact area between the dye and the outer surface of the leather is increased, the leather can fully absorb the dye, and the dyeing effect of the leather is further improved.

Preferably, the driving device comprises an electric telescopic rod, a supporting rod, a fiber supporting plate and an electromagnetic block; the electric telescopic rods are arranged on two sides of the dye vat, and the output end of each electric telescopic rod penetrates through the dye vat to be connected with a support rod; the end part of the supporting rod is connected with a fiber supporting plate; the fiber supporting plate and the supporting rod are both made of metal fiber rubber, and magnetic powder is mixed in the metal fiber rubber; the upper end face of the fiber supporting plate is provided with an electromagnetic block; the bottom end face of the movable basket is provided with a magnet, the magnetic pole of the magnet is opposite to that of the electrified electromagnetic block, and a gap is formed between the magnet and the electromagnetic block; when the movable basket is inserted into the dye vat, the controller controls the electromagnetic block to be electrified, and the electromagnet can perform adsorption operation on the movable basket; the controller controls the electric telescopic rod on one side of the dye vat to extend out, and simultaneously controls the electric telescopic rod on the other side of the dye vat to contract, the electric telescopic rod can drive the fiber supporting plate to slide towards the contraction direction of the electric telescopic rod through the supporting rod, the movable basket can slide along with the fiber supporting plate due to the magnetic connection between the movable basket and the fiber supporting plate, when the movable basket needs to slide towards the other side, the electric telescopic rods on the two sides of the dye vat of the controller work in opposite directions, so that the movable basket can reciprocate left and right in the dye vat, and the reciprocating sliding of the movable basket can enable leather arranged on the opening screen plate to be fully contacted with dye liquor in the dye vat; the cooperation of the electromagnetism piece that sets up simultaneously and magnet, not only can play absorbent effect to the activity basket, the magnetic field that electromagnetism piece and magnet produced simultaneously, can magnetize the moisture in the dye liquor, the water solubility grow after the magnetization, the permeability improves, the activity reinforcing, and then the dye solution after the configuration is dissolved the speed and is accelerated under the effect of magnetic field magnetization, dye liquor can be quick in the tissue of infiltration genuine leather, and then can improve the color and luster vividness after the genuine leather dyeing, the waste of dyeing has been avoided again simultaneously, save the cost of printing and dyeing.

Preferably, a liquid inlet is formed in the bottom end of the dye vat, and a fixing plate is arranged on the upper end face of the dye vat; the fixed plate is provided with an inserting port, and two sides of the inserting port are provided with sliding grooves; liquid guide grooves are formed in the left side wall and the right side wall of the movable basket in the vertical direction, and a mounting frame is mounted inside the movable basket; a rotating shaft is rotatably arranged in the movable basket, and a rotating roller is sleeved on the rotating shaft; a plurality of opening screens are arranged on the outer wall of the rotating roller; when the movable basket is driven by the driving device to shake left and right in the dye vat in a reciprocating mode, dye liquor in the dye vat can enter the movable basket through the liquor guide grooves in the two sides of the movable basket, the impact force of the dye liquor entering the movable basket can enable the opening screen plate installed in the movable basket in a rotating mode to rotate in the movable basket, and as leather is vertically inserted into the opening screen plate, the rotating opening screen plate can drive the leather to rotate in the dye liquor, so that the leather can be in rotating contact with the dye liquor, and the dyeing effect of the dye liquor on the leather is further improved; when the leather rotates to be separated from the contact with the dye liquor, the dye liquor adhered to the outer wall of the leather flows along the outer wall of the leather, and meanwhile, after the leather is separated from the contact with the dye liquor, the dye liquor adhered to the outer wall can be fully absorbed by the leather, so that the dyeing effect of the leather is further improved; simultaneously, the rotation of the opening screen plate and the reciprocating shaking of the movable basket can fully combine the dye liquor with the leather, and simultaneously, the dye in the dye vat can be stirred, so that the phenomenon that the dye liquor mode in the dye vat is static or the dye liquor is not uniformly dispersed is prevented, and the dyeing effect of the dye on the leather is further influenced.

Preferably, an arc-shaped clamping plate is arranged inside the bottom end of the opening screen plate, and an extrusion cavity is formed inside the arc-shaped clamping plate; the top end of the arc-shaped clamping plate is provided with a hard bulge, and the outer walls of two sides of the bottom end of the arc-shaped clamping plate are slidably mounted on two side walls of the bottom end of the opening screen plate through a plurality of limiting springs; the bottom end of the arc-shaped clamping plate is provided with a magnetic suction block; a metal block is arranged inside the bottom end of the opening screen plate and is aligned with the magnetic suction block; when the leather clamping plate works, leather is required to be installed on the opening screen plate, the end part of the leather is inserted into the opening screen plate along the upper end opening of the opening screen plate, the leather is continuously inserted into the opening screen plate, the arc-shaped clamping plate can shrink towards the bottom end of the opening screen plate due to the extrusion force at the bottom end of the leather, gas in the arc-shaped clamping plate after being extruded can move upwards, the hard bulge at the top end of the arc-shaped clamping plate is bent and deformed, the leather can be clamped by the bent deformation of the hard bulge, when the bottom end of the arc-shaped clamping plate moves downwards to be contacted with the inner bottom end of the opening screen plate, the magnetic suction block can be sucked to the upper surface of the metal block, and then the leather can be clamped and fixed by the arc-shaped clamping plate which is sunken downwards, and the phenomenon that the leather is separated from the opening screen plate due to the poor connection stability of the leather and the opening screen plate when the opening screen plate rotates is prevented, thereby affecting the staining effect of the dermis.

Preferably, both ends of the mounting rack are detachably connected with air guide hoses which are arranged on the outer wall of the dye vat, and the air guide hoses are provided with one-way valves; an air guide cavity is formed in the mounting frame, the upper end face of the mounting frame is communicated with the air guide cavity through the air guide hole, and a liquid-dredging air-guiding film is arranged on the upper end wall of the air guide cavity; when the movable basket is shaken left and right in the dye vat, the left and right movement of the movable basket enables the air guide hoses on the two sides to be extruded, air in the extruded air guide hoses enters the air guide cavities, the air in the air guide cavities can be sprayed into the upper surface of dye liquor through the air guide holes, and the air sprayed out of the mounting rack can blow away foam generated during dyeing of the dye liquor horizontally aligned with the mounting rack, so that the foam generated on the upper surface of the dye liquor is prevented, and the dyeing effect of the dye liquor on leather is further influenced; the check valve can make external gas enter into the gas guide hose, and simultaneously, when the gas guide hose extrudes, the phenomenon that internal gas is discharged is prevented.

The invention has the following beneficial effects:

1. the liquid guiding device is vertically inserted into the movable basket, when the movable basket is shaken back and forth left and right in the dye vat, the liquid can be fully contacted with the outer wall of the genuine leather, meanwhile, the liquid enters the movable basket through the liquid guiding groove due to the impact force of the liquid when the movable basket is shaken, and the installation mesh plate can rotate in the movable basket due to the impact force of the liquid, so that the soaking effect of distilled water on the genuine leather can be improved, and the dyeing effect of a dyeing agent on the genuine leather can be improved.

2. The dermis is vertically inserted into the opening mesh plate, and the rotating opening mesh plate can drive the dermis to rotate in the dye liquor, so that the dermis can be in rotating contact with the dye liquor, and the dyeing effect of the dye liquor on the dermis is further improved; when the leather rotates to be separated from the contact with the dye liquor, the dye liquor adhered to the outer wall of the leather flows along the outer wall of the leather, and meanwhile, after the leather is separated from the contact with the dye liquor, the dye liquor adhered to the outer wall can be fully absorbed by the leather, so that the dyeing effect of the leather is further improved;

3. the rotation of the opening screen plate and the reciprocating shaking of the movable basket can fully combine the dye liquor and the genuine leather, and can stir the dye in the dye vat, thereby preventing the dye liquor in the dye vat from standing or the dye liquor from dispersing unevenly, and further influencing the dyeing effect of the dye on the genuine leather.

Drawings

The invention will be further explained with reference to the drawings.

FIG. 1 is a flow chart of the process steps of the present invention;

FIG. 2 is an assembled perspective view of the dye vat and removable basket of the present invention;

FIG. 3 is a cross-sectional view of a dye vat and removable basket of the present invention;

FIG. 4 is a front view of the dye vat and removable basket of the present invention;

FIG. 5 is an enlarged view of a portion of the invention at A in FIG. 4;

in the figure: dye vat 1, activity basket 2, liquid guide groove 21, opening otter board 3, arc block board 31, extrusion chamber 311, stereoplasm arch 312, spacing spring 32, magnetism piece 33, drive arrangement 4, electric telescopic handle 41, bracing piece 42, fibre backup pad 43, electromagnetism piece 44, fixed plate 5, interface 51, sliding tray 52, mounting bracket 6, air guide chamber 61, air guide hole 62, axis of rotation 7, live-rollers 8, air guide hose 9.

Detailed Description

A dermis staining process according to an embodiment of the present invention will be described below with reference to fig. 1 to 5.

As shown in fig. 1, the present invention relates to a process for dyeing dermis, which comprises the following steps:

s1: leather installation: inserting small dermis into an opening mesh plate 3 arranged in the movable basket 2 in a vertical insertion mode; the liquid can be fully contacted with the outer wall of the dermis when the movable basket 2 is shaken back and forth left and right in the dye vat 1, and meanwhile, the liquid enters the movable basket 2 through the liquid guide groove 21 due to the impact force of the liquid when the movable basket 2 is shaken, and the installation screen plate can rotate in the movable basket 2 due to the impact force of the liquid, so that the soaking effect of distilled water on the dermis can be increased, and the dyeing effect of a dyeing agent on the dermis can be increased;

s2: soaking dermis: inserting the movable basket 2 in the step S1 into the dye vat 1, injecting distilled water into the dye vat 1, controlling the water level of the distilled water to be flush with the upper surface of the mounting rack 6, and controlling the movable basket 2 to shake left and right in the dye vat 1 in a reciprocating manner through the driving device 4;

s3: coloring the leather: pouring a dye agent into the dye vat 1, controlling the movable basket 2 to slowly shake back and forth in the vat body at intervals through the driving device 4, placing the movable basket 2 in a dark and ventilated place for drying after coloring, and obtaining dyed genuine leather;

As an embodiment of the present invention, in step S3, the left-right reciprocating shaking time of the movable basket 2 is 5 to 8 minutes, the movable basket 2 stops shaking for 3 minutes, and the movable basket 2 is shaken for four times in total; the movable basket 2 rocks in the dye vat 1 in a mode of slow interval, so that the contact area between the dye and the outer surface of the leather is increased, the leather can fully absorb the dye, and the dyeing effect of the leather is further increased.

As shown in fig. 2-5, the driving device 4 includes an electric telescopic rod 41, a support rod 42, a fiber support plate 43 and an electromagnetic block 44; the electric telescopic rods 41 are arranged on two sides of the dye vat 1, and the output ends of the electric telescopic rods 41 penetrate through the dye vat 1 and are connected with supporting rods 42; the end of the supporting rod 42 is connected with a fiber supporting plate 43; the fiber supporting plate 43 and the supporting rod 42 are both made of metal fiber rubber, and magnetic powder is mixed in the metal fiber rubber; an electromagnetic block 44 is arranged on the upper end face of the fiber supporting plate 43; the bottom end face of the movable basket 2 is provided with a magnet, the magnetic pole of the magnet is opposite to that of the electrified electromagnetic block 44, and a gap is formed between the magnet and the electromagnetic block 44; when the movable basket 2 is inserted into the dye vat 1, the controller controls the electromagnetic block 44 to be electrified, and the electromagnetic block 44 can perform adsorption operation on the movable basket 2; the controller controls the electric telescopic rod 41 on one side of the dye vat 1 to extend out, and simultaneously controls the electric telescopic rod 41 on the other side of the dye vat 1 to contract, the electric telescopic rod 41 contracts to drive the fiber supporting plate 43 to slide towards the contraction direction of the electric telescopic rod 41 through the supporting rod 42, the movable basket 2 slides along with the fiber supporting plate 43 due to the magnetic connection between the movable basket 2 and the fiber supporting plate 43, when the movable basket 2 slides towards the other side, the electric telescopic rods 41 on the two sides of the controller dye vat 1 work in opposite directions, so that the movable basket 2 reciprocates left and right in the dye vat 1, and the reciprocating sliding of the movable basket 2 can enable the opening mesh plate 3 to be mounted on the dermis dye vat 1 to be in full contact with dye liquor; the cooperation of the electromagnetism piece 44 and the magnet that set up simultaneously, not only can play absorbent effect to activity basket 2, the magnetic field that electromagnetism piece 44 and magnet produced simultaneously, can magnetize the moisture in the dye liquor, the water solubility grow after the magnetization, the permeability improves, the activity reinforcing, and then the dye solution after the configuration is dissolved the speed and is accelerated under the effect of magnetic field magnetization, in the infiltration genuine leather tissue that the dye liquor can be quick, and then can improve the color and luster vividness after the genuine leather dyeing, the waste of dyeing has been avoided again simultaneously, save the cost of printing and dyeing.

As shown in fig. 3-5, a liquid inlet is arranged at the bottom end of the dye vat 1, and a fixing plate 5 is arranged on the upper end surface of the dye vat 1; the fixed plate 5 is provided with an interface 51, and two sides of the interface 51 are provided with sliding grooves 52; liquid guide grooves 21 are formed in the vertical direction of the left side wall and the right side wall of the movable basket 2, and a mounting frame 6 is installed inside the movable basket 2; a rotating shaft 7 is rotatably arranged in the movable basket 2, and a rotating roller 8 is sleeved on the rotating shaft 7; a plurality of opening net plates 3 are arranged on the outer wall of the rotating roller 8; when the dyeing machine works, when the driving device 4 drives the movable basket 2 to shake left and right in the dye vat 1 in a reciprocating manner, dye liquor in the dye vat 1 can enter the movable basket 2 through the liquor guide grooves 21 on the two sides of the movable basket 2, the impact force of the dye liquor entering the movable basket 2 can enable the opening mesh plate 3 which is rotatably installed in the movable basket 2 to rotate in the movable basket 2, and as leather is vertically inserted into the opening mesh plate 3, the rotating opening mesh plate 3 can drive the leather to rotate in the dye liquor, so that the leather can be in rotating contact with the dye liquor, and the dyeing effect of the dye liquor on the leather is further improved; when the leather rotates to be separated from the contact with the dye liquor, the dye liquor adhered to the outer wall of the leather flows along the outer wall of the leather, and meanwhile, after the leather is separated from the contact with the dye liquor, the dye liquor adhered to the outer wall can be fully absorbed by the leather, so that the dyeing effect of the leather is further improved; simultaneously, the rotation of the opening screen plate 3 and the reciprocating shaking of the movable basket 2 can fully combine the dye liquor with the leather, and simultaneously, the dye in the dye vat 1 can be stirred, so that the phenomenon that the dye liquor in the dye vat 1 is static or the dye liquor is not uniformly dispersed is prevented, and the dyeing effect of the dye on the leather is further influenced.

As shown in fig. 4 and 5, an arc-shaped engaging plate 31 is disposed inside the bottom end of the opening mesh plate 3, and an extrusion cavity 311 is disposed inside the arc-shaped engaging plate 31; the top end of the arc-shaped clamping plate 31 is provided with a hard bulge 312, and the outer walls of two sides of the bottom end of the arc-shaped clamping plate 31 are slidably mounted on two side walls of the bottom end of the opening screen plate 3 through a plurality of limiting springs 32; the bottom end of the arc-shaped clamping plate 31 is provided with a magnetic suction block 33; a metal block is arranged inside the bottom end of the opening screen plate 3 and is aligned with the magnetic block 33; when the leather clamping plate works, the leather is required to be installed on the opening screen plate 3, the end part of the leather is inserted into the opening screen plate 3 along the upper end opening of the opening screen plate 3, the leather is continuously inserted into the opening screen plate 3, the arc-shaped clamping plate 31 can shrink towards the bottom end of the opening screen plate 3 due to the extrusion force at the bottom end of the leather, the gas in the arc-shaped clamping plate 31 after being extruded can move upwards, the top hard bulge 312 of the arc-shaped clamping plate 31 is bent and deformed, the leather can be clamped by the bending deformation of the hard bulge 312, when the bottom end of the arc-shaped clamping plate 31 moves downwards to be contacted with the inner bottom end of the opening screen plate 3, the magnetic suction block 33 can be adsorbed on the upper surface of the metal block, the leather can be clamped and fixed by the arc-shaped clamping plate 31 which is sunken downwards, and the poor connection stability of the leather and the opening screen plate 3 is prevented when the opening screen plate 3 rotates, leading to the separation of the dermis from the mesh opening plate 3, thereby affecting the staining effect of the dermis.

As shown in fig. 3 and 4, both ends of the mounting rack 6 are detachably connected with air guide hoses 9, the air guide hoses 9 are mounted on the outer wall of the dye vat 1, and the air guide hoses 9 are provided with one-way valves; an air guide cavity 61 is formed in the mounting frame 6, the upper end face of the mounting frame 6 is communicated with the air guide cavity 61 through an air guide hole 62, and a liquid-repellent air guide film is arranged on the upper end wall of the air guide cavity 61; when the dyeing machine works, when the movable basket 2 shakes left and right in the dye vat 1, the air guide hoses 9 on the two sides are extruded by the left and right movement of the movable basket 2, air in the extruded air guide hoses 9 enters the air guide cavities 61, the air in the air guide cavities 61 can be sprayed into the upper surface of dye liquor through the air guide holes 62, and the foam generated during dyeing of the dye liquor which is horizontally level and level on the mounting rack 6 can be blown away by the air sprayed from the mounting rack 6, so that the foam generated on the upper surface of the dye liquor is prevented, and the dyeing effect of the dye liquor on leather is further influenced; the one-way valve can enable outside air to enter the air guide hose 9, and meanwhile, the phenomenon that the inside air is discharged when the air guide hose 9 is extruded is prevented.

The specific working process is as follows:

when the movable basket 2 is inserted into the dye vat 1, the controller controls the electromagnetic block 44 to be electrified, and the electromagnetic block 44 can perform adsorption operation on the movable basket 2; electric telescopic handle 41 of 1 one side of controller control dye vat stretches out, the electric telescopic handle 41 shrink of 1 opposite side of simultaneous control dye vat, electric telescopic handle 41 shrink can drive fibre backup pad 43 through bracing piece 42 and slide to electric telescopic handle 41's shrink direction, when needs activity basket 2 slides to the opposite side, the work of 41 opposite directions of electric telescopic handle in 1 both sides of controller dye vat, and then make activity basket 2 reciprocating motion about in dye vat 1, the reciprocating motion of activity basket 2 can make install on the opening otter board 3 and carry out abundant contact with the dye liquor in dye vat 1 with the genuine leather, after the genuine leather dyeing in activity basket 2 is accomplished, controller control electromagnetic block 44 outage, the staff takes out activity basket 2 from dye vat 1.

In the description of the present invention, it is to be understood that the terms "center", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be taken as limiting the scope of the present invention.

While the invention has been described with reference to specific embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from its scope. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.

Claims

1. A process for dyeing dermis, which is characterized by comprising the following steps: the process comprises the following steps:

s1: leather installation: inserting small dermis into an opening mesh plate (3) arranged in a movable basket (2) in a vertical insertion mode;

s2: soaking dermis: inserting the movable basket (2) in the step S1 into the dye vat (1), injecting distilled water into the dye vat (1), controlling the water level of the distilled water to be flush with the upper surface of the mounting rack (6), and controlling the movable basket (2) to shake left and right in the dye vat (1) in a reciprocating manner through the driving device (4);

s3: coloring the leather: pouring a dye agent into the dye vat (1), controlling the movable basket (2) to slowly shake left and right in the vat body at intervals through the driving device (4), placing the movable basket (2) in a dark and ventilated place for drying after coloring, and obtaining dyed leather;

s4: and (3) leather color fixation: spreading the dried dyed dermis obtained in the step S3, uniformly coating wax water on the surface of the dyed dermis, and drying to obtain the dyed dermis;

a liquid inlet is formed in the bottom end of the dye vat (1), and a fixing plate (5) is arranged on the upper end face of the dye vat (1); the fixed plate (5) is provided with an inserting port (51), and two sides of the inserting port (51) are provided with sliding grooves (52); liquid guide grooves (21) are formed in the vertical direction of the left side wall and the right side wall of the movable basket (2), and a mounting frame (6) is installed inside the movable basket (2); a rotating shaft (7) is rotatably arranged in the movable basket (2), and a rotating roller (8) is sleeved on the rotating shaft (7); a plurality of opening screens (3) are arranged on the outer wall of the rotating roller (8);

an arc-shaped clamping plate (31) is arranged inside the bottom end of the opening screen plate (3), and an extrusion cavity (311) is formed inside the arc-shaped clamping plate (31); the top end of the arc-shaped clamping plate (31) is provided with a hard bulge (312), and the outer walls of two sides of the bottom end of the arc-shaped clamping plate (31) are slidably installed on two side walls of the bottom end of the opening screen plate (3) through a plurality of limiting springs; the bottom end of the arc-shaped clamping plate (31) is provided with a magnetic suction block; a metal block is arranged inside the bottom end of the opening screen plate (3) and is aligned with the magnetic suction block (33);

the two ends of the mounting rack (6) are detachably connected with air guide hoses (9), the air guide hoses (9) are mounted on the outer wall of the dye vat (1), and one-way valves are arranged on the air guide hoses (9); air guide cavity (61) is opened in mounting bracket (6), and the up end of mounting bracket (6) passes through air guide hole (62) and air guide cavity (61) intercommunication, and is provided with lyophobic air guide film on air guide cavity (61) upper end wall.

2. A process of dermal staining according to claim 1, characterized in that: in the step S3, the left-right reciprocating shaking time of the movable basket (2) is 5-8 minutes, the movable basket stops for 3 minutes, and the movable basket (2) shakes four times in total.

3. A process of dermal staining according to claim 1, characterized in that: the driving device (4) comprises an electric telescopic rod (41), a supporting rod (42), a fiber supporting plate (43) and an electromagnetic block (44); the electric telescopic rods (41) are arranged on two sides of the dye vat (1), and the output end of each electric telescopic rod (41) penetrates through the dye vat (1) to be connected with a support rod (42); the end part of the supporting rod (42) is connected with a fiber supporting plate (43); the fiber support plate (43) and the support rod (42) are both made of metal fiber rubber, and magnetic powder is mixed in the metal fiber rubber; an electromagnetic block (44) is arranged on the upper end face of the fiber supporting plate (43); the bottom end face of the movable basket (2) is provided with a magnet, the magnet is opposite to the magnetic pole of the electromagnetic block (44) which obtains electricity, and a gap is formed between the magnet and the electromagnetic block (44).