Dyeing device for leather production

Abstract

The invention discloses a leather production-based dyeing device, and belongs to the technical field of leather production, the leather production-based dyeing device comprises a dye box, the opening end of the dye box is provided with symmetrically arranged L-shaped supporting parts, and a pressurizing assembly and a positioning assembly are arranged between the symmetrical L-shaped supporting parts; the device further comprises a swinging mechanism installed on the dye box, a first supporting rod and a second supporting rod are installed on the inner wall of the dye box in a sliding mode, and the first supporting rod and the second supporting rod are rotationally connected with the positioning assemblies on the two sides correspondingly. The first supporting rod and the second supporting rod are driven by the swinging mechanism to periodically move up and down in the dye box, and the positioning assemblies on the two sides move in the L-shaped supporting parts, so that the pressure applied to leather by the pressurizing assembly and the contact point are changed, and dye is uniformly distributed on the whole leather surface and in the leather; the dyeing quality and efficiency are further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of leather production, in particular to a dyeing device for leather production. Background Art

[0002] With the development of the global economy and the improvement of people's living standards, leather products are increasingly used in a variety of fields, including clothing, footwear, furniture, and automotive interiors. Consumer demand for leather products is not limited to their functionality, but also pays more attention to the product's appearance, texture, and environmental performance. Therefore, the leather dyeing process, as a key step in the leather processing, has become increasingly important.

[0003] Traditional leather dyeing methods include immersion dyeing, spraying, brushing and other forms. In particular, the immersion dyeing method penetrates into the leather fibers through penetration and adsorption, resulting in a stronger bond and better wash and friction resistance of the finished product.

[0004] However, although the immersion dyeing method can provide a more uniform dyeing effect, it may cause uneven dye penetration when processing thick or complex leather. Summary of the Invention

[0005] The purpose of the present invention is to solve the problem of uneven dye penetration that may occur when processing thick or complex leather in the prior art, and to propose a dyeing device based on leather production.

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

[0007] A dyeing device for leather production includes a dye box, the open end of the dye box has a symmetrically arranged L-shaped support part, a pressure component and a positioning component are arranged between the symmetrical L-shaped support parts, the pressure component and the positioning component are symmetrically arranged about the center line of the L-shaped support part, and also includes a swing mechanism installed on the dye box, a first support rod and a second support rod are slidably installed on the inner wall of the dye box, and the first support rod and the second support rod are respectively rotatably connected to the positioning components on both sides.

[0008] In order to avoid rigid clamping, preferably, the positioning assembly includes a slide plate slidably mounted on the L-shaped support portion, and a positioning roller, which is rotatably mounted on the slide plate and symmetrically arranged; wherein, a positioning seat is fixedly mounted on the inner wall of the L-shaped support portion, and the two sides of the slide plate have extension ends, and the extension ends are slidably connected to the positioning seat, and a positioning plate is fixedly mounted on the extension end, and a first spring is sleeved on the extension end, and the two ends of the first spring are respectively fixedly connected to the positioning plate and the inner bottom surface of the positioning seat.

[0009] In order to adapt to leathers of different thicknesses, a rectangular groove is further provided on the skateboard, an adjustment block is slidably installed in the rectangular groove, one of the positioning rollers is rotatably installed on the adjustment block, an adjustment bolt is rotatably installed on the skateboard, and the adjustment bolt is rotatably connected to the adjustment block.

[0010] In order to apply controllable pressure to the leather surface and promote the penetration of dye into the leather fibers, the pressure component further includes a first support arm slidably connected to the L-shaped support part, a second support arm is slidably connected to the first support arm, and a pressure roller is rotatably installed on the second support arm; wherein, an end plate is fixedly installed at one end of the second support arm away from the pressure roller, and a second spring is sleeved on the second support arm, and the two ends of the second spring are respectively abutted against the end plate and the first support arm.

[0011] In order to form a linkage structure so that the positioning assembly and the pressurizing assembly can move in coordination, further, a connecting rod is rotatably mounted on the L-shaped support portion, and both ends of the connecting rod are rotatably connected to the extension end and the first support arm respectively.

[0012] In order to increase local pressure and improve the dye penetration efficiency, the pressure roller near the end of the dye box stroke has evenly distributed protrusions.

[0013] In order to produce a periodic disturbance effect in the dye solution, break the local concentration gradient, and promote uniform distribution of the dye, preferably, the swing mechanism includes a motor fixedly mounted on the outer wall of the dye box, and a horizontal rod rotatably mounted in the dye box, both ends of the horizontal rod are rotatably mounted with a third support arm, the third support arms at both ends are rotatably connected to the first support rod and the second support rod respectively, the output end of the motor is rotatably mounted with a swing arm, and the swing arm is rotatably connected to the horizontal rod at one end.

[0014] Furthermore, a spoiler roller is fixedly mounted on the horizontal rod.

[0015] In order to simulate the artificial assisted penetration operation and enhance the penetration ability of the dye into the leather fiber, further, a curved rod is fixedly installed on the spoiler roller, and a beating pad is rotatably installed on the curved rod.

[0016] In order to ensure that the leather always remains in an unfolded state during the dyeing process and avoid uneven dyeing due to relaxation or excessive tension, preferably, the dyeing device also includes hangers arranged at both ends of the dye box for unwinding and rewinding the leather, and a pressure rod slidably installed in the dye box, wherein a screw rod is rotatably installed on the inner wall of the dye box, and the pressure rod is threadedly installed on the screw rod.

[0017] Compared with the prior art, the present invention provides a dyeing device for leather production, which has the following beneficial effects:

[0018] 1. This leather dyeing device uses positioning components to fix its two ends to prevent floating or folding. The rocking mechanism starts to operate, causing the dye liquid inside the dye box to shake regularly, accelerating the flow of dye and improving dyeing uniformity. At the same time, the rocking mechanism drives the first and second support rods to move up and down periodically in the dye box. The positioning components on both sides move with them within the L-shaped support part, thereby changing the pressure and contact points applied by the pressure component on the leather. This ensures that the dye is evenly distributed across the entire leather surface and inside, further improving dyeing quality and efficiency.

[0019] 2. This leather production-based dyeing device uses a motor to drive the swing arm to rotate, which in turn drives the horizontal rod to swing back and forth at its fulcrum. The swing of the horizontal rod is transmitted to the first and second support rods through the third support arm, causing them to perform periodic up and down motions within the dye box, driving the positioning component and the pressurizing component to work together. At the same time, the spoiler roller swings with the horizontal rod, generating eddy currents and shear forces in the dye solution, accelerating the diffusion rate of dye molecules and avoiding color differences caused by localized excessive concentration. In addition, the curved rod on the spoiler roller drives the beating pad to gently beat the leather surface, further promoting dye penetration and improving dyeing depth and uniformity.

[0020] 3. This dyeing device for leather production drives the screw to rotate and adjusts the height position of the pressure rod according to preset parameters, so that the pressure rod applies appropriate pressure to the leather, ensuring that the leather always remains in an expanded state during the dyeing process, avoiding uneven dyeing due to relaxation or excessive tension. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of a dyeing device for leather production proposed by the present invention;

[0022] Figure 2 This is a schematic diagram of the internal structure of a dyeing device for leather production proposed by the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of a positioning component based on a dyeing device for leather production proposed by the present invention;

[0024] Figure 4 This is a schematic structural diagram of a pressurizing component of a dyeing device for leather production proposed by the present invention;

[0025] Figure 5 This is a schematic diagram of the structure of a swing mechanism based on a dyeing device for leather production proposed by the present invention;

[0026] Figure 6This is a schematic diagram of the pressure rod installation structure of a dyeing device for leather production proposed by the present invention.

[0027] In the figure: 100, dye box; 110, L-shaped support; 120, connecting rod; 130, screw rod;

[0028] 200, pressurizing assembly; 210, first support arm; 220, second support arm; 230, pressurizing roller; 231, protrusion; 240, end plate; 250, second spring;

[0029] 300, positioning assembly; 310, slide plate; 311, extension end; 312, rectangular groove; 313, adjustment block; 314, adjustment bolt; 320, positioning roller; 330, positioning seat; 340, positioning plate; 350, first spring;

[0030] 400, swing mechanism; 410, horizontal rod; 420, third support arm; 430, swing arm; 440, motor;

[0031] 500, first support rod; 600, second support rod;

[0032] 700, spoiler roller; 710, bending rod; 720, beating pad;

[0033] 800, hanging bracket; 900, pressure rod. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0035] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0036] Example 1:

[0037] Reference Figure 1-6, a dyeing device based on leather production, including a dye box 100 for holding a dye solution, the open end of the dye box 100 has a symmetrically arranged L-shaped support part 110, and a pressurizing component 200 and a positioning component 300 are arranged between the symmetrical L-shaped support parts 110 to promote the penetration of the dye into the leather fiber and improve the dyeing depth and uniformity. The pressurizing component 200 and the positioning component 300 are symmetrically arranged around the center line of the L-shaped support part 110, and also includes a swing mechanism 400 installed on the dye box 100, which can make the dye liquid inside the dye box 100 produce periodic shaking, simulating the effect of manually turning the leather, thereby improving the dye diffusion efficiency and shortening the dyeing time. A first support rod 500 and a second support rod 600 are slidably installed on the inner wall of the dye box 100, and the first support rod 500 and the second support rod 600 are rotatably connected to the positioning components 300 on both sides respectively.

[0038] During use of the dyeing device for leather production provided by the present invention, the leather to be dyed is first placed inside the dye box 100, and its two ends are fixed by the positioning component 300 to prevent floating or folding. The swing mechanism 400 starts to run, driving the dye liquid inside the dye box 100 to shake regularly, accelerating the flow of dye, and improving dyeing uniformity. At the same time, the swing mechanism 400 drives the first support rod 500 and the second support rod 600 to move up and down periodically in the dye box 100, and the positioning components 300 on both sides follow the movement in the L-shaped support part 110, thereby changing the pressure and contact point applied by the pressurizing component 200 to the leather, so that the dye is evenly distributed on the entire leather surface and inside, further improving the dyeing quality and efficiency.

[0039] Example 2:

[0040] The dyeing device for leather production provided in Example 1 was further optimized, referring to Figure 1 and Figure 3 The positioning assembly 300 includes a slide plate 310 slidably mounted on the L-shaped support portion 110, and a positioning roller 320, which is rotatably mounted on the slide plate 310 for clamping and guiding the leather, and can be rotated to facilitate the leather to smoothly enter and leave the dye box 100, and is symmetrically arranged; wherein, a positioning seat 330 is fixedly mounted on the inner wall of the L-shaped support portion 110, and the slide plate 310 has extension ends 311 on both sides, and the extension ends 311 are slidably connected to the positioning seat 330 and can slide freely along its length direction. A positioning plate 340 is fixedly mounted on the extension end 311, which plays the role of limiting and pressure transmission. A first spring 350 is sleeved on the extension end 311, and the two ends of the first spring 350 are respectively fixedly connected to the positioning plate 340 and the inner bottom surface of the positioning seat 330, so that the slide plate 310 is always in the center position of the L-shaped support portion 110 without pressure.

[0041] Furthermore, a rectangular groove 312 is provided on the slide plate 310, and an adjusting block 313 is slidably installed in the rectangular groove 312. One positioning roller 320 is rotatably installed on the adjusting block 313. An adjusting bolt 314 is rotatably installed on the slide plate 310. The adjusting bolt 314 is rotatably connected to the adjusting block 313 to form a screw transmission structure. Rotating the adjusting bolt 314 can drive the adjusting block 313 to move along the rectangular groove 312, thereby realizing precise adjustment of the position of the positioning roller 320 to adapt to leather of different thicknesses.

[0042] Through the setting of the above structure, the user rotates the adjusting bolt 314 according to the thickness of the leather, driving the adjusting block 313 to slide along the rectangular groove 312, thereby changing the spacing between the positioning rollers 320 so that it fits the edge of the leather just right to achieve a stable clamping effect. This screw transmission structure ensures the smoothness and precision of the adjustment process. When the pressure component 200 starts to apply pressure, the positioning component 300 cooperates with the first spring 350 to absorb part of the impact force to avoid damage to the leather due to rigid clamping. At the same time, the rocking mechanism 400 drives the dye box 100 to shake periodically, driving the first support rod 500 and the second support rod 600 to move up and down, further promoting dye penetration and improving dyeing uniformity.

[0043] Example 3:

[0044] The dyeing device for leather production provided in Example 2 was further optimized, referring to Figure 1 and Figure 2 The pressurizing assembly 200 includes a first support arm 210 slidably connected to the L-shaped support portion 110, which can slide freely along its length direction in the L-shaped support portion 110 to clamp the leather product. The first support arm 210 is slidably connected to the second support arm 220, which can move up and down relative to the first support arm 210 to form a two-level adjustment structure. A pressurizing roller 230 is rotatably mounted on the second support arm 220 for applying controllable pressure to the leather surface to promote the penetration of dye into the leather fibers. In particular, the pressurizing roller 230 near the end of the stroke of the dye box 100 has evenly distributed protrusions 231, which helps to increase local pressure and improve the dye penetration efficiency.

[0045] Specifically, an end plate 240 is fixedly mounted on one end of the second support arm 220 away from the pressure roller 230, and a second spring 250 is sleeved on the second support arm 220. The two ends of the second spring 250 are respectively in contact with the end plate 240 and the first support arm 210 for limiting and buffering.

[0046] A connecting rod 120 is rotatably mounted on the L-shaped support portion 110. The connecting rod 120 is only located above the L-shaped support portion 110. The two ends of the connecting rod 120 are rotatably connected to the extension end 311 and the first support arm 210 respectively, forming a linkage structure with the first support arm 210 above, so that the positioning component 300 and the pressurizing component 200 can move in coordination.

[0047] Through the arrangement of the above structure, during the operation of the dyeing device, the rocking mechanism 400 drives the dye box 100 to rock periodically, driving the first support rod 500 and the second support rod 600 to move up and down, thereby causing the slide 310 of the positioning assembly 300 to slide along the L-shaped support portion 110. At this time, the connecting rod 120 converts the movement of the slide 310 into a reciprocating movement of the first support arm 210, and through the second support arm 220 and the pressure roller 230, the pressure roller 230 applies dynamic pressure to the leather surface. Due to the presence of the second spring 250, the pressure of the pressure roller 230 can be automatically adjusted according to the thickness of the leather, avoiding damage caused by rigid pressure. In particular, the evenly distributed protrusions 231 arranged on the surface of the pressure roller 230 can produce a local micro-pressure effect on the leather surface during the pressurization process, thereby promoting the rapid penetration of the dye into the deep layer of the leather fiber, which is particularly suitable for the dyeing treatment of thick leather or dense leather materials. In addition, the positioning component 300 and the pressure component 200 are linked by the connecting rod 120 to ensure that the two actions are coordinated, which not only ensures the stability of leather clamping, but also realizes dynamic pressure control, significantly improving the dyeing uniformity and processing efficiency.

[0048] Example 3:

[0049] The dyeing device for leather production provided in Example 2 was further optimized, referring to Figure 1 and Figure 5 The swing mechanism 400 includes a motor 440 fixedly mounted on the outer wall of the dye box 100. As the power source of the entire swing mechanism 400, a servo motor 440 can be used to achieve precise control and a horizontal rod 410 rotatably mounted in the dye box 100. Both ends of the horizontal rod 410 are rotatably mounted with a third support arm 420. The third support arms 420 at both ends are rotatably connected to the first support rod 500 and the second support rod 600 respectively. A swing arm 430 is rotatably mounted at the output end of the motor 440, and the swing arm 430 is rotatably connected to the horizontal rod 410 at one end.

[0050] Furthermore, a spoiler roller 700 is fixedly mounted on the horizontal rod 410 and swings synchronously with the horizontal rod 410 to generate a periodic disturbance effect in the dye solution, thereby breaking the local concentration gradient and promoting uniform distribution of the dye.

[0051] Furthermore, a curved rod 710 is fixedly mounted on the spoiler roller 700, and a beating pad 720 is rotatably mounted on the curved rod 710. The curved rod 710 has an asymmetric curved structure, so that it can drive the end component to move in a compound trajectory during the swinging process. The beating pad 720 can gently slap the leather surface under the drive of the curved rod 710, simulating an artificial assisted penetration operation and enhancing the ability of the dye to penetrate into the leather fibers.

[0052] By the arrangement of said structure, starting motor 440 drives swing arm 430 to do rotational motion, and then drives horizontal bar 410 to do reciprocating swing at its fulcrum. The swing of horizontal bar 410 is transmitted to the first support bar 500 and the second support bar 600 by the third support arm 420, so that it does periodic motion up and down in dye box 100, drives positioning assembly 300 and pressure assembly 200 to cooperate with each other, meanwhile, spoiler roller 700 swings with horizontal bar 410, produces eddy current and shearing force in dye liquor, accelerates the diffusion speed of dye molecules, avoids the color difference problem that local concentration is too high and causes. In addition, the bent rod 710 on spoiler roller 700 drives slapping pad 720 and gently slaps leather surface, further promotes dye penetration, promotes dye depth and uniformity.

[0053] Example 4:

[0054] The dyeing device for leather production provided in Example 3 was further optimized, referring to Figure 1 and Figure 6 The dyeing device also includes a hanger 800 arranged at both ends of the dye box 100, which is used for unwinding and rewinding the leather, and a pressure rod 900 slidably installed in the dye box 100, wherein a screw rod 130 is rotatably installed on the inner wall of the dye box 100, and the pressure rod 900 is threadedly installed on the screw rod 130. By rotating the screw rod 130, the height position of the pressure rod 900 can be accurately adjusted, thereby adjusting the pressure on the leather to ensure dyeing uniformity.

[0055] Through the arrangement of the above structure, the leather roll to be dyed is first placed on the unwinding shaft at one end of the dye box 100, and then the leather is poured into the interior of the dye box 100 and fixed by the positioning component 300. Then, it is led to the reel at the other end of the dye box 100 for rewinding. After starting the equipment, the unwinding shaft slowly releases the leather, and the reeling shaft synchronously performs the rewinding operation to keep the leather moving smoothly in the dye solution. During this process, the rocking mechanism 400 drives the horizontal rod 410 and its attached spoiler roller 700 and the beating pad 720 to perform periodic motion, promoting uniform distribution of the dye and accelerating penetration. At the same time, the driving screw 130 rotates and adjusts the height position of the pressure rod 900 according to preset parameters so that the pressure rod 900 applies appropriate pressure to the leather, ensuring that the leather always remains in an unfolded state during the dyeing process to avoid uneven dyeing due to relaxation or excessive tension.

[0056] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A dyeing device for leather production, comprising a dye box (100), characterized in that: The open end of the dye box (100) has a symmetrically arranged L-shaped support portion (110), a pressurizing component (200) and a positioning component (300) are arranged between the symmetrical L-shaped support portions (110), and the pressurizing component (200) and the positioning component (300) are symmetrically arranged about the center line of the L-shaped support portion (110). A swing mechanism (400) is installed on the dye box (100), and a first support rod (500) and a second support rod (600) are slidably installed on the inner wall of the dye box (100), and the first support rod (500) and the second support rod (600) are respectively rotatably connected to the positioning components (300) on both sides.

2. The dyeing device for leather production according to claim 1, characterized in that: The positioning assembly (300) comprises a slide plate (310) slidably mounted on the L-shaped support portion (110), and Positioning rollers (320) are rotatably mounted on the slide plate (310) and are symmetrically arranged; A positioning seat (330) is fixedly mounted on the inner wall of the L-shaped support portion (110), and both sides of the slide plate (310) have extension ends (311), and the extension ends (311) are slidably connected to the positioning seat (330). A positioning plate (340) is fixedly mounted on the extension end (311), and a first spring (350) is sleeved on the extension end (311), and the two ends of the first spring (350) are respectively fixedly connected to the positioning plate (340) and the inner bottom surface of the positioning seat (330).

3. A dyeing device for leather production according to claim 2, characterized in that: A rectangular groove (312) is provided on the slide plate (310), an adjusting block (313) is slidably installed in the rectangular groove (312), one of the positioning rollers (320) is rotatably installed on the adjusting block (313), an adjusting bolt (314) is rotatably installed on the slide plate (310), and the adjusting bolt (314) is rotatably connected to the adjusting block (313).

4. A dyeing device for leather production according to claim 3, characterized in that: The pressurizing assembly (200) comprises a first support arm (210) slidably connected to the L-shaped support portion (110), a second support arm (220) slidably connected to the first support arm (210), and a pressurizing roller (230) rotatably mounted on the second support arm (220); An end plate (240) is fixedly mounted on one end of the second support arm (220) away from the pressure roller (230), a second spring (250) is sleeved on the second support arm (220), and two ends of the second spring (250) are respectively in contact with the end plate (240) and the first support arm (210).

5. The dyeing device for leather production according to claim 4, characterized in that: A connecting rod (120) is rotatably mounted on the L-shaped support portion (110), and both ends of the connecting rod (120) are rotatably connected to the extension end (311) and the first support arm (210) respectively.

6. The dyeing device for leather production according to claim 4, characterized in that: The pressure roller (230) near the end of the stroke of the dye box (100) has evenly distributed protrusions (231).

7. The dyeing device for leather production according to claim 1, characterized in that: The swing mechanism (400) includes a motor (440) fixedly mounted on the outer wall of the dye box (100), and A horizontal rod (410) is rotatably mounted in the dye box (100), and third support arms (420) are rotatably mounted at both ends of the horizontal rod (410), and the third support arms (420) at both ends are rotatably connected to the first support rod (500) and the second support rod (600), respectively. A swing arm (430) is rotatably mounted at the output end of the motor (440), and the swing arm (430) is rotatably connected to one end of the horizontal rod (410).

8. The dyeing device for leather production according to claim 7, characterized in that: A spoiler roller (700) is fixedly mounted on the horizontal rod (410).

9. The dyeing device for leather production according to claim 8, characterized in that: A curved rod (710) is fixedly mounted on the spoiler roller (700), and a slapping pad (720) is rotatably mounted on the curved rod (710).

10. The dyeing device for leather production according to claim 1, characterized in that: The dyeing device further comprises a hanger (800) arranged at both ends of the dye box (100) for unwinding and rewinding the leather, and A pressure rod (900) is slidably mounted in the dye box (100), A screw rod (130) is rotatably mounted on the inner wall of the dye box (100), and the pressure rod (900) is threadedly mounted on the screw rod (130).

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