KR20070007594A - Apparatus and method for tinting of leather - Google Patents

Abstract

An apparatus and a method for tinting leather are provided to improve an existing tinting facility without requiring a special device for tinting leather, and to be able to tint leather easily at low cost and. The apparatus for tinting leather comprises a drive roller(10) for supplying leather to be tinted, a conveyor belt(20) for conveying the leather supplied from the drive roller(10), a printing unit(30) for performing a tinting operation on the conveyed leather, a drying unit(40) for drying the tinted leather, a rinsing unit(50), and a controller(60). Preferably, the printing unit(30) is located above the conveyer belt(20) because the printing unit(30) performs tinting by a screen printing method, starting from the top of leader to be tinted.

Description

Apparatus and method for tinting of leather}

Figure 1a is a side view showing a leather coloring device according to a preferred embodiment of the present invention.

Figure 1b is a plan view showing a leather coloring apparatus according to a preferred embodiment of the present invention.

Figure 2a is a side view showing a driving roller of the leather coloring apparatus according to an embodiment of the present invention.

Figure 2b is a front view showing a driving roller of the leather coloring apparatus according to an embodiment of the present invention.

3 is a plan view showing a printing unit of the leather coloring apparatus according to an embodiment of the present invention.

Figure 4a is a longitudinal sectional view showing a dry unit of the leather coloring apparatus according to a preferred embodiment of the present invention.

Figure 4b is a cross-sectional view showing a dry unit of the leather coloring apparatus according to a preferred embodiment of the present invention.

5 is a flow chart showing a leather coloring method according to an embodiment of the present invention.

<Explanation of symbols for main parts of the drawings>

10: drive roller 20: conveyance belt

30: printing unit 40: dry unit

50: washing device 60: control unit

The present invention relates to a coloring apparatus, and more particularly, to a leather coloring apparatus and method.

Leather is typically a beam house process for raw skin or skin obtained from animal skins, tanning processes that add flexibility and heat resistance to the skin and perform tanning, neutralizing, coloring and lipochemical processes And it is produced through a finishing process including drying, coating (coating), through such a process to improve the durability, fixability, etc. to obtain a leather product as a final product.

Leather products are used in various fields, and in each field, various animal skins and corresponding tanning methods are used. In addition, recently, various surface treatments such as embossing and suede are applied as well as coloring a specific color as a whole at the finishing stage of leather.

The coloring of the leather according to the prior art is carried out using dyes or pigments. Most of these coloring materials employ materials used in textile dyeing in the past, and suitable coloring methods have been used depending on the type of leather, the tanning method and the use.

Since leather has various properties according to its type, actual work depends on experience. For example, even when a leather is colored in a single color, a certain leather product takes a long time, requires complicated work, or may need to repeat the same step several times. This made it difficult to mass-produce dyed products of the same design or to dye leather to form very fine or multicolored images.

On the other hand, the coloring of the fabric according to the prior art is to straighten the fabric by a plurality of drive rollers to supply to the conveying device, and after performing the coloring by the screen printing method or the like with a printing unit to the fabric to be conveyed by being attached to the conveying device, dry The coloring process was completed by drying in a box.

In this process, an adhesive is applied to the surface of the conveying apparatus, and heat is supplied to the surface of the conveying apparatus so that the fabric is in close contact with the conveying apparatus so that printing work can be smoothly performed on the conveying apparatus. The surface is cleaned to prevent dust, dirt, etc. from sticking to the surface of the conveying device.

Coloring of the leather is also possible to perform mass production by using such a conventional fabric coloring apparatus is possible to produce mass production inexpensively and easily because no separate equipment is required.

However, in the case of using a conventional fabric coloring device, firstly, leather products are thicker than fabric, have a lower uniformity of thickness, and are difficult to use existing drive rollers because they are supplied in a single sheet unlike fabrics. Coloring is not as fast as the fabric, third, there is a problem that shrinkage may occur when the colored leather is dried in a dry box.

The present invention is to provide a device and a coloring method capable of coloring leather inexpensively and easily using existing fabric coloring equipment without a dedicated device for coloring the leather.

According to one aspect of the present invention, a driving roller, a conveying belt for conveying the leather supplied from the driving roller adjacent to the driving roller, a printing unit positioned on the upper portion of the conveying belt to color the leather, and conveying A leather coloring apparatus including a dry unit positioned next to a printing unit in a conveying direction of a belt for use, wherein the driving rollers are elastically supported with each other, and include two rollers including an elastic material.

The drive roller includes a first roller, a second roller in rolling contact with the first roller, a drive unit for applying rotational force to the first roller or the second roller, and a rotation shaft and an elastic body of the second roller. The frame is coupled to the frame, and the screw is coupled to the frame, one end is in contact with the rotating shaft, the other end may include a control shaft protruding out of the frame, the handle is coupled to the other end of the control shaft.

An adhesive may be applied to the surface of the conveyance belt, and the adhesive preferably includes any one or more of acetone, thinner, and toluene. The conveying belt may include a heat supply device therein.

The apparatus may further include a controller for adjusting the conveying speed of the conveying belt or the coloring speed of the printing unit, wherein the controller may adjust the coloring speed in response to the conveying speed, or adjust the conveying speed in response to the coloring speed.

The dry unit may include one or more electrothermal heaters, one or more fans positioned on the rear side of the electrothermal heaters, and a reflector plate surrounding the fans and the electrothermal heaters on the back of the fans. The cleaning apparatus may further include a washing apparatus for washing the surface of the conveying belt after the dry unit in the conveying direction of the conveying belt.

In addition, (a) elastically supported with each other, the step of feeding the leather between the two rollers containing the elastic material, (b) the step of adhering the leather to the conveying belt, (c) for conveying Coloring the leather by a printing unit located on top of the belt; And (d) supplying heat to the leather and drying the same.

It is preferable that the adhesive agent containing any one or more of acetone, thinner, and toluene is apply | coated to the surface of a conveyance belt. The conveyance speed of the conveyance belt and the coloring speed of the printing unit are preferably adjusted to correspond to each other.

After step (c) or step (d) may further comprise the step of washing the surface of the conveying belt.

Furthermore, the leather colored by the said leather coloring method is provided.

Hereinafter, a preferred embodiment of the leather coloring apparatus and method according to the present invention will be described in detail with reference to the accompanying drawings, in the description with reference to the accompanying drawings, the same or corresponding components are given the same reference numerals and Duplicate explanations will be omitted.

Figure 1a is a side view showing a leather coloring apparatus according to a preferred embodiment of the present invention, Figure 1b is a plan view showing a leather coloring apparatus according to a preferred embodiment of the present invention. 1A and 1B, a driving roller 10, a conveying belt 20, a printing unit 30, a dry unit 40, a washing apparatus 50, and a control unit 60 are illustrated.

Leather coloring device of the present invention is to make the conventional coloring device for the leather product, the leather supply part, the coloring process control unit 60, the part for drying mainly modified and replaced.

That is, the leather coloring apparatus of the present invention is colored by the driving roller 10 for supplying the leather to be colored, the conveying belt 20 for conveying the leather supplied from the driving roller 10, and the conveyed leather. And a printing unit 30 for performing the step, and a dry unit 40 for drying the colored leather.

In the order in which leather is conveyed by the conveyance belt 20, the drive roller 10, the conveyance belt 20, the printing unit 30, and the dry unit 40 are arrange | positioned in order. Since the printing unit 30 is a unit that performs coloring by a method such as screen printing on the upper side of the leather to be colored, it is preferable that the printing unit 30 is located above the conveying belt 20.

The leather coloring apparatus according to the present invention, unlike the conventional coloring apparatus for fabrics, is supplied in a single sheet and is intended for leathers having a large thickness and a large thickness variation, so that the structure of the driving roller 10 for supplying a coloring object is It is different from the prior art.

That is, the driving roller 10 according to the prior art is to be applied to the tension force to the fabric by a plurality of rollers in order to stretch and convey the fabric of the form extending in one direction, the driving roller 10 according to the present invention is a sheet Since it is difficult to apply the tensile force to the leather, so that the leather is supplied to the drive roller 10 composed of a pair of rollers in the same manner as rolling (rolling).

Generally, the thickness of the fabric is 0.2mm to 0.3mm, and the thickness of the conventional leather is 2mm to 3mm. Since the thickness of the leather is different from the fabric, the thickness varies according to the part, and thus a pair of By supplying in the same manner as rolling by a roller, it becomes possible to perform a function corresponding to a function performed by a plurality of rollers in a conventional textile coloring apparatus.

That is, the driving roller 10 according to the present invention serves to straighten the leather to be colored, and serves to reduce the thickness deviation, while supplying the leather to the conveying device for coloring in a sheet.

To this end, the driving roller 10 according to the present invention is elastically supported with each other, it is preferable that the two rollers including an elastic material is engaged by engaging in the form of rolling contact (rolling contact). Detailed description of the structure of the drive roller 10 will be described later.

Figure 2a is a side view showing a driving roller of the leather coloring apparatus according to a preferred embodiment of the present invention, Figure 2b is a front view showing a driving roller of the leather coloring apparatus according to a preferred embodiment of the present invention. 2A and 2B, the driving roller 10, the first roller 12, the second roller 14, the rotation shaft 15, the elastic body 16, the adjustment shaft 17, the frame 18, The handle 19 is shown.

The drive roller 10 is a component for supplying leather in a rolling manner, and has two rollers which are in rolling contact with each other elastically. As described above, each roller includes an elastic material such as rubber.

Therefore, if a rotational force is applied to two rollers or one of them, and leather is inserted between the two rollers, since the rollers are elastically supported with each other, the gap between the two rollers opens and the leather is separated through the gap. It is supplied in the same way as rolling.

Each roller includes an elastic material such as rubber, and since the rollers are elastically contacted with each other, the rollers pressurize the leather in the process of feeding the leather, thereby straightening the leather and reducing thickness variation of each part.

On the other hand, the leather to be colored is not only thick, but also may vary considerably depending on the type of leather, in order to supply the various thickness of the leather to the coloring device between the two rollers of the driving roller 10 It is better to configure it to adjust the interval.

To this end, the control shaft is coupled to the rotation axis 15 of the first roller 12 or the second roller 14, one end is in contact with the rotation axis 15 and the other end protrudes out of the frame 18 (17) is coupled to the frame 18 and the screw method, and the handle 19 for rotation to the other end of the control shaft 17 is coupled.

Due to this, the adjusting shaft 17 can be rotated by rotating the handle 19, and the adjusting shaft 17, which is coupled to the frame 18 in a screw manner, moves relative to the frame 18. The handle 19 is rotated so that the adjusting shaft 17 moves out of the frame 18 to increase the distance between the rollers, and one end of the adjusting shaft 17 is in contact with the rotating shaft 15 to close the gap between the two rollers. The handle 19 is rotated to press the rotary shaft 15.

When the adjusting shaft 17 is moved by the rotation of the handle 19 and one end of the adjusting shaft 17 moves away from the rotating shaft 15, the rotating shaft of the first roller 12 or the second roller 14 is moved. The first roller 12 or the second roller 14 and the frame 18 are moved to the elastic body 16 in order to move the distance between the two rollers while the 15 is in contact with one end of the adjustment shaft 17. It is good to combine through.

In this way, the elastic body 16 serves to pull the rotating shaft 15, and the adjusting shaft 17 serves to push the rotating shaft 15, thereby adjusting the distance between the two rollers by the operation of the handle 19. do.

However, the present invention is not necessarily limited to the above configuration for adjusting the distance between the rollers, the elastic body 16, such as a spring to push the rotating shaft 15, and the rotating shaft 15 to pull the rotating shaft 15 Of course, it may include a configuration for adjusting the distance between the two rollers within a range apparent to those skilled in the art, such as using a control shaft 17 connected to the.

On the other hand, by making the material of each roller an elastic material such as rubber, it is possible to supply leather of various thicknesses in the same manner as rolling, even if there is no configuration for adjusting the distance between the two rollers.

Therefore, the two elastically supported rollers of the present invention, when the elastic body 16 and the control shaft 17 is coupled, when the roller including the elastic material is coupled to the rolling contact (rolling contact), and Both cases are covered.

3 is a plan view showing a printing unit of the leather coloring apparatus according to an embodiment of the present invention. Referring to FIG. 3, a printing unit 30, a printing area 32, and a printing arm 34 are shown.

In the leather coloring apparatus according to the present invention, the printing unit 30 utilizes the printing unit 30 for fabric coloring according to the prior art, and its basic configuration and printing method are the same as in the prior art. That is, the coloring of the fabric according to the prior art, by applying heat to the conveying belt 20 to which the adhesive is applied to enable the adhesive and supply the fabric so that the fabric is adhered to the conveying belt 20 to color the fabric After fixing so as not to move in the process, the coloring is done by using a printing arm 34 on the leather located in the printing area 32 by a silk screen or the like.

However, in the case of leather coloring, since the thickness and weight of the leather itself is less likely to cause movement in the coloring process, such as fabric, and because of the excellent adsorption power with the conveying belt 20, the leather is adhered to the conveying belt 20. The need for fixing is reduced. When the adhesive is applied to the conveying belt 20, this may cause dust or foreign matter to adhere to the conveying belt 20, which may cause mechanical failure or deterioration of coloring quality.

Therefore, an adhesive agent may be applied to the surface of the conveyance belt 20 of the leather coloring device of the present invention for fixing the leather to be colored, and a heat supply device may be mounted therein so as to supply heat. However, as described above, in the case of leather, strong adhesion is not required as in general fabric, so it is preferable to dilute the conventional adhesive. To dilute the adhesive, a mixture of materials such as acetone, thinner, toluene, etc. is used.

When diluting the adhesive, there is no problem in fixing the leather to be colored, and the degree of adhesion of dust and foreign matter to the surface of the conveying belt 20 is reduced, and the surface of the belt is unnecessary at the end of the belt, It can be cleaned very easily.

Since the coloring of the leather may take a long time compared to the general fabric, the conveyance speed of the conveying belt 20 may be slower than that of the fabric, and the coloring speed of the printing unit 30 may be faster than that of the fabric. To this end, it is preferable to further include a control unit 60 for adjusting the conveying speed of the conveying belt 20 and the coloring speed of the printing unit 30.

A control panel is added to the existing coloring apparatus for ON / OFF control of the driving roller 10, the conveyance belt 20, the printing unit 30, and the like. And a control unit 60 capable of controlling the coloring speed to correspond to each other.

The control unit 60 is preferably a processing device capable of internal calculation, such as a computer, and controls the speed of the motor for applying power to the conveying belt 20 or the printing unit 30 to control the conveying speed and coloring speed of the leather. Control to correspond to each other.

When the conveying speed and the coloring speed are controlled by the computer as described above, the conveying belt 20 and the printing unit 30 correspond to each other by simply inputting an appropriate value according to the type of leather to be colored, the type of coloring, and the like. As it is controlled, the coloring quality is maintained and no problem occurs in mass production.

Figure 4a is a longitudinal sectional view showing a dry unit of the leather coloring apparatus according to a preferred embodiment of the present invention, Figure 4b is a cross-sectional view showing a dry unit of the leather coloring apparatus according to a preferred embodiment of the present invention. 4A and 4B, a dry unit 40, an electric heater 42, a fan 44, and a reflector 46 are shown.

Leather coloring device of the present invention is to use the existing fabric coloring equipment, usually in the case of the fabric is subjected to a drying operation in a dry box after coloring. Dry box is generally supplying heat of 110 degrees to 150 degrees Celsius to form a space for drying the fabric, in the case of leather drying operation in such a dry box, the shrinkage occurs due to the nature of the leather.

This shrinkage causes fatal damage not only to the color quality but also to the quality of the leather itself. Accordingly, the leather coloring apparatus according to the present invention includes a heat transfer heater 42, a fan 44 positioned on the rear surface of the heat transfer heater 42, and a fan 44 and heat transfer heater 42 on the rear surface of the fan 44. Dry the leather using a dry unit 40 including a reflector plate 46 surrounding the.

The heat transfer heater 42 generates heat at a temperature at which shrinkage does not occur in the leather, and the fan 44 generates airflow passing through the heat transfer heater 42 to promote drying of the leather due to warm air. The reflecting plate 46 serves to reflect the radiant heat by the heat transfer heater 42 in the direction of the leather.

Thus, by arranging the dry unit 40 after the printing unit 30 in the conveyance direction of the conveyance belt 20, the leather which coloring is completed is dried so that a coloring process may be completed. Of course, the dry unit 40 used in the leather coloring apparatus according to the present invention is not necessarily limited to the configuration as described above, and all obvious to those skilled in the art that the drying is performed within the range that the colored leather does not shrink. It can include a configuration.

On the other hand, for the coloring of the leather according to the present invention as described above, it is possible to sufficiently secure the leather to the conveying belt 20 by using only the diluted adhesive than the conventional adhesive, thereby facilitating the surface of the conveying belt 20 Can be washed, and in some cases may not.

Therefore, the cleaning apparatus 50 may be further included after the dry unit 40 in the conveying direction of the conveying belt 20, wherein the washing apparatus 50 is rotated by a brush roller than conventionally. At low speeds or low numbers, sufficient cleaning can be achieved.

5 is a flowchart illustrating a leather coloring method according to an embodiment of the present invention.

The present invention relates to a leather coloring device in which a conventional coloring device is modified to be suitable for coloring of leather supplied in a sheet, and a leather coloring method using the same is provided. That is, in the leather coloring method according to the present invention, first, the leather to be colored is inserted into and supplied to the driving roller 10, which is elastically supported with each other and includes two rollers including an elastic material (100). Since the configuration of the driving roller 10 is as described above, a detailed description thereof will be omitted.

Next, the leather supplied by the drive roller 10 is adhered to the conveyance belt 20 and conveyed (110). The reason for adhering the leather to the conveying belt 20 is to prevent the coloring object from moving as described above. However, in the present invention, the adhesive used for coloring the conventional fabric is diluted with acetone, thinner, toluene, or the like. Can be used.

Next, the leather is colored 120 by the printing unit 30 located above the conveyance belt 20. The printing unit 30 and the coloring method thereof may be applied to the case of the printing unit 30 for conventional fabric coloring.

Finally, heat is supplied to the colored leather by the printing unit 30 and dried (130). In the case of leather, since shrinkage may occur due to heat, the drying unit 40 for drying the leather may supply heat to the leather by the fan 44 and the reflector 46 so that the shrinkage of the leather does not occur. It is preferable to have a configuration as described above.

Since the coloring of the leather may take a long time than the coloring of the fabric, the conveying speed of the conveying belt 20 is slower, and the coloring rate of the printing unit 30 is better controlled. The speed is preferably controlled to correspond to each other.

Meanwhile, in the case of the leather coloring method according to the present invention, since the leather is fixed to the conveying belt 20 by using an adhesive diluted in the prior art, the surface of the conveying belt 20 is more easily washed than the conventional fabric coloring. Can be done. Accordingly, the method may further include a step 140 of cleaning the surface of the conveying belt 20 after coloring the leather or after drying the colored leather, and the cleaning device 50 for this purpose is a brush roller than the conventional brush. As described above, even if the rotation speed of the roller is low or the number thereof is low, sufficient washing can be performed.

Although the technical spirit of the present invention has been described in detail according to the above-described embodiments, the above-described embodiments are for the purpose of description and not of limitation, and a person of ordinary skill in the art will appreciate It will be understood that various embodiments are possible within the scope.

According to the present invention having the configuration as described above, by replacing only the drive roller for supplying leather and the dry unit for drying the colored leather in the existing fabric coloring equipment, it is cheap and easy to use without a dedicated device for coloring the leather Leather can be colored.

Claims (13)

A driving roller; A conveyance belt for conveying the leather supplied from said drive roller adjacent said drive roller; A printing unit positioned at an upper portion of the conveying belt to color the leather; A dry unit located next to the printing unit in a conveying direction of the conveying belt, The driving roller is elastically supported with each other, the leather coloring apparatus comprising two rollers including an elastic material. The method of claim 1, wherein the drive roller, A first roller; A second roller in rolling contact with the first roller; A driving unit applying a rotational force to the first roller or the second roller; A frame coupled to the rotating shaft of the second roller via an elastic body; A control shaft coupled to the frame in a screw manner, one end of which is in contact with the rotating shaft, and the other end which protrudes out of the frame; Leather coloring device comprising a handle coupled to the other end of the control shaft. The method of claim 1, The leather coloring apparatus in which an adhesive agent is apply | coated to the surface of the said conveyance belt. The method of claim 3, The adhesive agent is a leather coloring device comprising any one or more of acetone, thinner, toluene. The method of claim 3, The conveying belt is a leather coloring device comprising a heat supply device therein. The method of claim 1, And a control unit for adjusting a conveying speed of the conveying belt or a coloring speed of the printing unit, wherein the controller adjusts the coloring speed in response to the conveying speed or adjusts the conveying speed in response to the coloring speed. Leather coloring device. The method of claim 1, And the dry unit comprises at least one electrothermal heater, at least one fan positioned on the rear surface of the electrothermal heater, and a reflecting plate surrounding the fan and the electrothermal heater at the rear of the fan. The method of claim 1, And a washing apparatus for washing the surface of the conveying belt after the dry unit in a conveying direction of the conveying belt. (a) elastically supported from each other, inserting and feeding leather between two rollers including an elastic material; (b) adhering the leather to a conveyance belt and conveying it; (c) coloring the leather by a printing unit located above the conveying belt; And (D) leather coloring method comprising the step of supplying heat to the leather to dry. The method of claim 9, The leather coloring method in which the adhesive agent containing any one or more of acetone, thinner, and toluene is apply | coated to the surface of the said conveyance belt. The method of claim 9, The conveying speed of the conveyance belt and the coloring speed of the printing unit is adjusted so as to correspond to each other. The method of claim 9, Cleaning the surface of the conveying belt after the step (c) or after the step (d). Leather colored by the leather coloring method of claim 9.

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