Automatic feeding device and method for waterproof nubuck dyeing

Abstract

The invention relates to a waterproof nubuck dyeing automatic feeding device and method, and relates to the field of waterproof nubuck dyeing, the waterproof nubuck dyeing automatic feeding device comprises a fixed seat, a dip dyeing device is arranged at the upper end of the fixed seat, a dip dyeing frame is arranged in the dip dyeing device, and feeding units located above the fixed seat are arranged on the left side and the right side of the dip dyeing device. The fixing assembly can tighten and fix a plurality of pieces of split leather stacked up and down at intervals, so that the dip dyeing quantity of the split leather is increased, the dip dyeing efficiency is improved, the stability of the split leather in the feeding and dip dyeing process can be improved, the phenomenon that the split leather is wrinkled is prevented, and the quality of the split leather is improved. Meanwhile, by means of the spaced arrangement mode, it can be guaranteed that different two-layer leathers can be evenly and effectively dip-dyed in the dye liquor, the accumulation situation is avoided, contact interference between the two-layer leathers is reduced, the consistency of the dyeing quality and the dyeing speed of the different two-layer leathers is guaranteed, the phenomena of chromatic aberration or color spots and the like are avoided, and therefore the overall dyeing effect is improved.

Description

Technical Field

[0001] The invention relates to the field of waterproof nubuck dyeing, and in particular to an automatic feeding device and method for waterproof nubuck dyeing. Background Art

[0002] Waterproof nubuck is a specially treated cowhide material, usually refers to frosted leather with waterproof properties. The same cowhide can generally be divided into top layer leather and split layer leather. The split layer leather is located below the top layer leather and has a rougher surface. It needs to be polished, painted and other processes to improve its appearance. It is usually used to make belts, carpet pads, furniture leather, etc. Through dyeing, split leather can meet the diverse needs of different markets and products. The dyeing of split leather is generally divided into the preparation stage, pretreatment, preparation of dye solution, fixing leather, feeding and dipping, post-treatment and other stages. Among them, feeding and dipping is mainly dyeing by immersing the split leather in a solution containing dye in the dipping equipment. It is one of the most common dyeing methods.

[0003] However, there are still the following problems in the process of feeding the second layer of leather into the dyeing equipment for dyeing:

[0004] (1) Although the method of loading and dyeing the leather one by one can ensure the dyeing quality of the second layer of leather, its efficiency is not ideal. Although the method of loading and dyeing multiple pieces at the same time is efficient, the second layer of leather is prone to accumulation or wrinkles, resulting in color difference or uneven dyeing during the dyeing process. It is difficult to keep the dyeing quality and dyeing speed consistent, and the overall dyeing efficiency needs to be improved.

[0005] (2) Since the shapes and sizes of different second-layer leathers may be different and the texture of second-layer leather is relatively soft, the dyeing effects of different second-layer leathers may be different. At the same time, the second-layer leather immersed in the dye solution is prone to bending and deformation, which leads to different dyeing effects at different positions on the same second-layer leather, and the dyeing uniformity and integrity are not ideal.

[0006] Therefore, in order to solve the problems existing in the feeding process of the second layer leather, the present invention provides an automatic feeding device for waterproof nubuck dyeing. Summary of the invention

[0007] The present invention provides an automatic feeding device for waterproof nubuck dyeing, comprising a fixed seat, a dyeing device is arranged at the upper end of the fixed seat, a dyeing frame is arranged inside the dyeing device, and feeding units located above the fixed seat are arranged on both the left and right sides of the dyeing device; the feeding unit comprises a fixing component for fixing two layers of leather, the fixing component comprises two square frames distributed up and down, the square frames are provided with evenly arranged square holes, four corners of the upper and lower square frames are connected with support columns, the outside of the support columns are sleeved with square plates evenly arranged up and down, the upper ends of the square plates are provided with rotating blocks rotatably installed on the outside of the support columns, a threaded telescopic rod is installed on the side of the rotating block away from the center of the square frame, and a fixed A block, a guide telescopic rod symmetrical to the threaded telescopic rod is connected between the fixed block and the rotating block, a pin is installed on the upper end of the fixed block, and a mounting rod installed on the upper end of the fixed block is provided on the side of the pin close to the threaded telescopic rod, a limit rod is installed on the upper end of the fixed block corresponding to the position of the guide telescopic rod, a moving block is sleeved on the outside of the mounting rod, a connecting spring sleeved on the outside of the mounting rod is connected between the moving block and the upper end of the mounting rod, and a limiting hole matching the limiting rod is provided on the lower end of the side of the moving block away from the mounting rod; the feeding unit also includes an electric hoist arranged above the fixed assembly, and electric sliders are installed at the front and rear ends of the electric hoist, and the electric sliders on the same left and right sides are slidably installed on the same transverse guide rail, and the transverse guide rail is installed on the upper end of the fixed seat through a support frame.

[0008] In a possible implementation, the rotating blocks are provided with sockets evenly arranged around the corresponding support columns, and the upper end of the square plate on one side away from the center of the square frame is plugged into the corresponding sockets through an insertion rod.

[0009] In one possible implementation, an elastic retractable plate is installed in the middle of the outer sides of the square frame, and the inner walls of the four sides of the dyeing frame are provided with strip grooves that slide up and down with the corresponding retractable ends of the elastic retractable plate, and a funnel-shaped protective frame is installed on the upper end of the dyeing frame.

[0010] In one possible implementation, a cross is installed between the upper ends of the fixed sections of the elastic retractable plate located above, the cross is arranged at the lower end of the annular plate, an annular groove is opened at the lower end of the annular plate, and arc rods slidably connected to the annular groove are installed at the upper ends of the transverse section and the longitudinal section of the cross.

[0011] In one possible implementation, a rotating column is installed in the middle of the upper end of the cross, the upper end of the rotating column is connected to the motor output shaft, the motor is installed on the upper end of the annular plate through a support, and a protective shell is installed on the upper end of the support and is sleeved on the outside of the motor.

[0012] In one possible implementation, the middle part of the upper end surface of the protective shell and the upper end surfaces on the front and rear sides of the annular plate are connected to the loading wire rope arranged at the lower end of the corresponding electric hoist, and the left and right sides of the loading wire rope in the middle are respectively connected to the upper end surfaces of the transverse sections corresponding to the cross with inclined auxiliary wire ropes, and two left-right symmetrical rectangular doors are hinged on the upper end of the dyeing equipment, and the rectangular doors are provided with semicircular through holes for avoiding the wire ropes.

[0013] In one possible implementation, the rotating column is provided with arc-shaped grooves that are evenly arranged circumferentially, and a control rod is provided on the front side of the rotating column. The control rod is connected to the vertical plate installed at the lower end of the support for forward and backward sliding. An arc block that matches the arc-shaped groove is installed at the rear end of the control rod, and a telescopic spring that is sleeved on the outside of the control rod is connected between the arc block and the vertical plate.

[0014] In one possible implementation, the front end of the electric slider located on the front side of the right loading unit and the rear end of the electric slider located on the rear side of the left loading unit are both installed with alignment plates, and a baffle opposite to the corresponding alignment plate is installed at the upper end of the support frame.

[0015] A waterproof nubuck dyeing automatic feeding method is completed by using a waterproof nubuck dyeing automatic feeding device, comprising the following steps:

[0016] S1. Preparation stage: Select suitable split cowhide as the base material and clean the leather to remove impurities and grease on its surface.

[0017] S2. Pretreatment: Perform certain physical treatments on the second layer of leather, such as sanding, stretching and smoothing.

[0018] S3. Prepare dye solution: select appropriate dye according to the required color, pour the dye into the dyeing frame in the dyeing equipment after weighing, add appropriate amount of clean water according to the ratio, and stir the dye thoroughly.

[0019] S4. Fixing leather: fix the two layers of leather placed at intervals from bottom to top through a fixing component.

[0020] S5. Loading and dyeing: The fixed component and the second layer of leather are moved as a whole to the dyeing frame in the dyeing equipment through the cooperation of the electric hoist and the electric slider, and the second layer of leather is fully immersed in the dyeing liquid in the dyeing frame for dyeing. At the same time, the dyeing equipment needs to be closed and the temperature, pressure and time parameters of the dyeing equipment need to be set as required.

[0021] S6. Post-processing: After the dyeing is completed, the dyeing equipment is opened, the fixed components and the second layer of leather after the dyeing are removed from the dyeing equipment, and the second layer of leather after the dyeing is dried, painted and cut through existing equipment.

[0022] Beneficial effects of the present invention:

[0023] 1. The fixing assembly used in the present invention can tighten and fix multiple second-layer leathers stacked up and down, which not only increases the number of second-layer leathers that are dyed and improves the dyeing efficiency, but also increases the stability of the second-layer leathers during the feeding and dyeing process, and prevents the second-layer leathers from wrinkling. At the same time, the spacing method can ensure that different second-layer leathers can be evenly and effectively dyed in the dye solution, avoid accumulation, reduce contact interference between the second-layer leathers, so as to ensure the consistency of dyeing quality and dyeing speed of different second-layer leathers, avoid color difference or color spots, and thus improve the overall dyeing effect.

[0024] 2. The fixing component used in the present invention can flexibly change the fixing point of the second layer of leather, fix the second layer of leather of different shapes and sizes in the same and stable manner, and ensure that the second layer of leather is always in a taut state to meet the fixing requirements of different second layers of leather, increase the use scope of the fixing component, and ensure that each area on the second layer of leather can be fully and effectively colored, thereby improving the dyeing uniformity and integrity of the second layer of leather of different shapes and sizes.

[0025] 3. The present invention adopts two left and right feeding units to continuously deliver different batches of second-layer leather to the dyeing equipment for dyeing. The continuous feeding and dyeing method can greatly shorten the feeding time and improve the overall dyeing efficiency.

[0026] In addition to the technical problems solved by the embodiments of the present invention described above, the technical features that constitute the technical scheme, and the beneficial effects brought about by the technical features of the technical scheme, other technical problems that can be solved by a waterproof nubuck dyeing automatic feeding device and method provided by the embodiments of the present application, other technical features included in the technical scheme, and the beneficial effects brought about by these technical features will be further described in detail in the specific implementation manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 The present invention is a schematic diagram of the process flow of a waterproof nubuck dyeing method.

[0028] Figure 2 It is a schematic diagram of the main stereoscopic structure of the present invention.

[0029] Figure 3 It is a schematic diagram of the three-dimensional structure of the dyeing frame and the protection frame of the present invention.

[0030] Figure 4 It is a schematic diagram of the three-dimensional structure of the electric slider, the alignment plate and the baffle of the present invention.

[0031] Figure 5 It is a schematic diagram of the three-dimensional structure of the fixing assembly of the present invention.

[0032] Figure 6 It is a schematic diagram of the three-dimensional structure of the annular plate, the cross and the motor of the present invention.

[0033] Figure 7 It is a schematic diagram of the three-dimensional structure of the rotating column, the arc block and the arc groove of the present invention.

[0034] Figure 8 It is a three-dimensional structural schematic diagram of the square frame, the rotating block and the threaded telescopic rod of the present invention.

[0035] Fig. 9 It is a schematic diagram of the three-dimensional structure of the fixed block, the movable block and the pin of the present invention.

[0036] In the figure: 1, fixed seat; 2, dyeing equipment; 21, dyeing frame; 3, feeding unit; 31, square frame; 311, electric hoist; 312, electric slide; 313, transverse guide rail; 314, alignment plate; 315, baffle; 316, elastic telescopic plate; 317, strip groove; 318, protection frame; 319, cross; 32, support column; 321, ring plate; 322, arc rod; 323, rotating column; 324, arc groove ; 325, control rod; 326, arc block; 327, telescopic spring; 328, motor; 329, feeding wire rope; 33, square plate; 331, auxiliary wire rope; 332, rectangular door; 34, rotating block; 35, jack; 36, plug rod; 37, threaded telescopic rod; 38, fixed block; 381, pin; 382, ​​mounting rod; 383, limit rod; 384, moving block; 385, connecting spring; 39, guide telescopic rod. DETAILED DESCRIPTION

[0037] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described below, and those skilled in the art can make similar improvements without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0038] See also Figure 1 , Figure 2 and Figure 3 A waterproof nubuck dyeing automatic feeding device comprises a fixed seat 1, a dyeing device 2 is arranged on the upper end of the fixed seat 1, a dyeing frame 21 is arranged inside the dyeing device 2, and a feeding unit 3 located above the fixed seat 1 is arranged on both sides of the left and right sides of the dyeing device 2.

[0039] See also Figure 5 , Figure 8 and Fig. 9 The feeding unit 3 includes a fixing component for fixing the second layer of leather, the fixing component includes two square frames 31 distributed up and down, the square frames 31 are provided with evenly arranged square holes, the four corners of the upper and lower square frames 31 are connected with support columns 32, the outside of the support columns 32 is provided with a square plate 33 evenly arranged up and down, the upper end of the square plate 33 is provided with a rotating block 34 rotatably installed on the outside of the support column 32, the rotating block 34 is provided with jacks 35 evenly arranged circumferentially around the support column 32, the upper end of the square plate 33 on one side away from the center of the square frame 31 is plugged into the corresponding jack 35 through an insert rod 36, and a threaded telescopic rod 37 is installed on the side of the rotating block 34 away from the center of the square frame 31. A fixed block 38 is rotatably installed at the telescopic end of the rod 37, and a guide telescopic rod 39 symmetrical to the threaded telescopic rod 37 is connected between the fixed block 38 and the rotating block 34. A pin 381 is installed on the upper end of the fixed block 38, and a mounting rod 382 installed on the upper end of the fixed block 38 is provided on the side of the pin 381 close to the threaded telescopic rod 37. A limiting rod 383 is installed on the upper end of the fixed block 38 corresponding to the position of the guide telescopic rod 39, and a moving block 384 is sleeved on the outside of the mounting rod 382. A connecting spring 385 sleeved on the outside of the mounting rod 382 is connected between the moving block 384 and the upper end of the mounting rod 382, ​​and a limiting hole matching the limiting rod 383 is provided on the lower end of the moving block 384 away from the mounting rod 382.

[0040] When doing the specific work, the first step is: first, you need to select a suitable second layer of cowhide as the base material, and clean the leather through existing cleaning equipment to remove impurities and grease on its surface.

[0041] Step 2: The second layer of leather then needs to undergo certain physical treatments, such as polishing, stretching and smoothing the second layer of leather through existing equipment.

[0042] Step 3: Select appropriate dye according to the required color, pour the dye into the dyeing frame 21 in the dyeing equipment 2 after weighing, add an appropriate amount of clean water according to the ratio, and fully stir the dye to make it uniform, so as to obtain the required dye solution.

[0043] Step 4: First, the second layer of leather is sent to the dyeing equipment 2 for dyeing through the feeding unit 3 on the right. In this process, multiple second layers of leather are first fixed by the fixing assembly on the right. In the initial state, the rotating block 34 drives the corresponding threaded telescopic rod 37, the guide telescopic rod 39 and the fixed block 38 to face the side away from the center of the square frame 31, and the moving block 384 compresses the connecting spring 385 along the mounting rod 382 and cooperates with the limiting rod 383 through the limiting hole. In the process of fixing the first second layer of leather, it is first necessary to rotate the rotating block 34 located at the bottom around one of the support columns 32 and drive the threaded telescopic rod 37, the guide telescopic rod 39, the fixed block 38, the pin 381, the mounting rod 382, ​​the moving block 384 and the limiting rod 383 to rotate synchronously toward the center of the square frame 31. Then, one corner of the second layer of leather can be pressed on the pin 381 manually, and the second layer of leather can be inserted through the pin 381. The leather is fixed on the upper end of the fixed block 38, and then the movable block 384 can be moved upward along the mounting rod 382 and the connecting spring 385 can be made to continue to compress the connecting spring 385, thereby releasing the limit of the limit rod 383 and the movable block 384, and at the same time rotating the movable block 384 so that the limit hole at the lower end of the movable block 384 is located above the insertion pin 381, and then the movable block 384 is released. The movable block 384 moves downward along the mounting rod 382 under the elastic force of the connecting spring 385 and is finally pressed on the upper end of the fixed block 38, and the insertion pin 381 is gradually inserted into the limit hole. At this time, the second layer of leather is just located between the fixed block 38 and the movable block 384, and the connecting spring 385 is still in a compressed state at this time to ensure that the second layer of leather is in a stable state under the elastic pressure of the movable plate, and the cooperation between the movable block 384, the insertion pin 381 and the limit hole can be used to tightly press the second layer of leather on the upper end of the fixed block 38, and then the other three corners of the second layer of leather can be inserted and pressed in the same way.

[0044] After the first second-layer leather is fixed, multiple second-layer leathers can be tightened and fixed from bottom to top in the same manner as described above. In addition, there is a certain distance between the upper and lower adjacent rotating blocks 34, so that there is a certain gap between the multiple second-layer leathers arranged up and down. By stacking and fixing the multiple second-layer leathers in an interval manner up and down, not only the number of second-layer leathers that are dyed at one time is increased, and the efficiency of subsequent dyeing is improved, but also different second-layer leathers can be evenly and effectively dyed in the dye solution, ensuring the consistency of dyeing quality and dyeing speed of different second-layer leathers, thereby improving the dyeing effect.

[0045] Since the second layer of leather is not trimmed during dyeing, the shapes and sizes of different second layers of leather may be different. In the process of fixing the second layer of leather, the insertion rod 36 can be first pulled out from the corresponding insertion hole 35 to make the rotating block 34 in a free state, and then the corresponding rotating block 34 is rotated around the support column 32, and the threaded telescopic rod 37, the guide telescopic rod 39, the fixed block 38, the mounting rod 382, ​​the connecting spring 385, the moving block 384 and the insertion pin 381 are synchronously rotated around the support column 32. After the rotating block 34 is rotated to a suitable position, the rotating block 34 can be fixed again on the upper end of the corresponding square plate 33 through the cooperation between the insertion rod 36 and the insertion hole 35. At the same time, the rotating block 34 can also be rotated. The telescopic end of the threaded telescopic rod 37 is moved to adjust the position of the fixed block 38, and the positions of the mounting rod 382, ​​the moving block 384, the limiting rod 383 and the pin 381 are changed synchronously, and the guide telescopic rods 39 on both sides of the threaded telescopic rod 37 are extended and retracted synchronously. By rotating the rotating block 34 and the rotating threaded telescopic rod 37, the positions of the fixed block 38, the pin 381 and the moving block 384 when fixing the second layer of leather can be flexibly changed to meet the fixing requirements of the second layer of leather of different shapes and sizes. In order to ensure that the second layer of leather is always in a taut state, the fixing points on the same second layer of leather can be different. Fixing the second layer of leather at the best point is conducive to improving the stability of the second layer of leather.

[0046] See also Figure 2 and Figure 4 The feeding unit 3 also includes an electric hoist 311 arranged above the fixed component, and electric sliders 312 are installed at the front and rear ends of the electric hoist 311. The electric sliders 312 on the left and right sides are slidably installed on the same transverse guide rail 313. The transverse guide rail 313 is installed on the upper end of the fixed seat 1 through a support frame. The front end of the electric slider 312 located on the front side of the right feeding unit 3 and the rear end of the electric slider 312 located on the rear side of the left feeding unit 3 are both installed with alignment plates 314, and a baffle 315 opposite to the corresponding alignment plate 314 is installed on the upper end of the support frame.

[0047] See also Figure 3 , Figure 5 , Figure 6 and Figure 8 The square frame 31 is provided with elastic retractable plates 316 in the middle of the outer sides thereof, and the inner walls of the dyeing frame 21 are provided with strip grooves 317 which are slidably matched with the retractable ends of the corresponding elastic retractable plates 316 up and down. A funnel-shaped protective frame 318 is provided at the upper end of the dyeing frame 21.

[0048] See also Figure 2 , Figure 3 , Figure 5 , Figure 6 and Figure 7A cross 319 is installed between the upper ends of the fixed sections of the elastic telescopic plate 316 located above, and the cross 319 is arranged at the lower end of the annular plate 321. The lower end of the annular plate 321 is provided with an annular groove. The upper ends of the transverse and longitudinal sections of the cross 319 are both provided with arc rods 322 slidably connected to the annular groove. A rotating column 323 is installed in the middle of the upper end of the cross 319. The upper end of the rotating column 323 is connected to the output shaft of the motor 328. The motor 328 is installed at the upper end of the annular plate 321 through a support. The outer side of the rotating column 323 is provided with arc grooves 324 evenly arranged in the circumferential direction. A control rod 325 is arranged on the front side of the rotating column 323. The control rod 325 is slidably connected to the vertical plate installed at the lower end of the support. An arc block 326 matching the arc groove 324 is installed at the rear end of the control rod 325, and a telescopic spring 327 sleeved on the outside of the control rod 325 is connected between the arc block 326 and the vertical plate. A protective shell sleeved on the outside of the motor 328 is installed on the upper end of the support. The middle part of the upper end surface of the protective shell and the upper end surfaces on the front and rear sides of the annular plate 321 are connected to the feeding wire rope 329 arranged at the lower end of the corresponding electric hoist 311. The left and right sides of the feeding wire rope 329 located in the middle are respectively connected to the upper end surfaces of the transverse sections corresponding to the cross 319 with inclined auxiliary wire ropes 331. Two left-right symmetrical rectangular doors 332 are hinged on the upper end of the dyeing device 2, and semicircular through holes are opened on the rectangular doors 332 for avoiding the wire ropes.

[0049] When fixing different points of the same second-layer leather, the motor 328 can be used to drive the rotating column 323 to rotate ninety degrees. The rotating column 323 drives the elastic telescopic plate 316 to rotate synchronously with the upper square frame 31 through the cross 319. The cross 319 rotates along the annular groove at the lower end of the annular plate 321 through the arc rod 322. The cooperation of the annular plate 321, the annular groove and the arc rod 322 can guide and support the rotation of the cross 319, thereby improving the stability of the cross 319. The square frame 31 below rotates synchronously therewith through the supporting column 32, and the fixing component as a whole rotates ninety degrees synchronously. By intermittently rotating the fixing component, the fixed point of the second-layer leather can be rotated to another place, and the unfixed point can be rotated to the position of the operator, so as to automatically change the fixed position of the second-layer leather, and can continuously fix multiple second-layer leathers without the need for workers to walk back and forth to complete the fixing of the second-layer leather, which is conducive to shortening the overall fixing time, saving time and effort while increasing the loading efficiency.

[0050] In the initial state, the arc block 326 is pressed into the arc groove 324 on the outside of the rotating column 323, and the telescopic spring 327 is in a compressed state. Through the cooperation of the arc block 326 and the arc groove 324, the rotating column 323 can be limited, which is also the limit of the fixed component to prevent the fixed component from rotating during the subsequent movement and affecting the smooth progress of the subsequent dyeing. In the process of the motor 328 driving the rotating column 323 to rotate intermittently to change the position of the fixed component, the arc block 326 gradually disengages from the arc groove 324 as the rotating column 323 rotates, and the control rod 325 moves forward along the vertical plate with the movement of the arc block 326 and compresses the telescopic spring 327, so that the rotating column 323 rotates smoothly. The arc block 326 and the arc groove 324 can also be used to limit the intermittent rotation of the fixed component by 90 degrees to ensure the accuracy of the rotation angle of the fixed component. It should be noted that the motor 328 and the protective shell have been waterproofed, and the dye in the subsequent dyeing process will not affect the work of the motor 328.

[0051] Step 5: After the right fixing assembly completes the fixing of several layers of leather, the electric hoist 311 on the right can drive the protective shell and the cross 319 to move upward synchronously through the feeding wire rope 329 at its lower end, and the protective shell drives the support and the annular plate 321, the cross 319 drives the elastic telescopic plate 316, the upper square frame 31, the support column 32 and the lower square frame 31 to move upward synchronously, and the middle feeding wire rope 329 and the auxiliary wire ropes 331 on its left and right sides form a stable triangular structure, so that the fixing assembly can drive several layers of leather to move upward in a balanced and stable manner, thereby improving the stability of the fixing assembly and the second layer of leather as a whole during the feeding process. The left and right rectangular doors 332 at the upper end of the equipment 2 are in an open state. When the fixed component drives the second layer of leather to move up to the upper right side of the dyeing equipment 2, the front and rear electric sliders 312 on the right side can drive the electric hoist 311 on the right side to move to the left along the front and rear transverse guide rails 313. The electric hoist 311 drives the fixed component and the second layer of leather to move left synchronously through the feeding wire rope 329 until the fixed component and the second layer of leather are located directly above the dyeing equipment 2. At this time, the alignment plate 314 on the right side just conflicts with the baffle 315 on the front support frame. The cooperation between the alignment plate 314 and the baffle 315 can ensure the accuracy of the left movement of the fixed component and the second layer of leather.

[0052] Then, the electric hoist on the right side drives the fixed component and the two layers of leather to move down to the dyeing frame 21 in the dyeing equipment 2 through the feeding wire rope 329, and immerses several layers of leather in the dyeing liquid in the dyeing frame at the same time. In this process, the funnel-shaped protective frame 318 can guide the downward movement of the fixed component, and the elastic expansion plates 316 on the upper and lower square frames 31 do not contact the protective frame 318. The square holes on the square frame 31 are conducive to reducing the pressure between the square frame 31 and the dyeing liquid during the downward movement. As the fixed component moves downward, the expansion section of the lower elastic expansion plate 316 gradually expands. It gradually shrinks and enters the strip groove 317 corresponding to the inner wall of the dyeing frame 21. When the fixed component completely enters the dyeing frame 21, the elastic expansion plates 316 on the same side of the upper and lower sides enter the same strip groove 317. The cooperation between the elastic expansion plates 316 and the strip groove 317 can guide and support the downward movement of the fixed component, thereby ensuring that the two layers of leather are always in a stable state during the dyeing process. Then the rectangular doors 332 on the left and right sides can be rotated to close the upper end of the dyeing equipment 2, and the semicircular through holes opened on the rectangular plates can be used for the up and down movement of the feeding wire rope 329.

[0053] The temperature, pressure and time parameters of the dyeing device 2 are set as required to complete the dyeing of the plurality of layers of leather in the dyeing frame 21. After the dyeing of the plurality of layers of leather is completed, the electric hoist 311 drives the fixed component and the plurality of layers of leather to move upward to the area where the protective frame 318 is located through the feeding wire rope 329, and the elastic expansion plate 316 is separated from the corresponding strip groove 317. At this time, the dyeing device 2 is still in a closed state, and then the fixed component can be driven by the motor 328 to rotate quickly to transfer the attached or The excess dye on the second layer of leather is thrown out, and the thrown dye will flow into the dyeing frame 21 again along the funnel-shaped protective frame 318. By pre-drying the second layer of leather, it is helpful to reduce the subsequent drying time, so that the dyed second layer of leather can be quickly removed from the fixed component to facilitate the subsequent loading of the second layer of leather to be dyed. Then, the left and right rectangular doors 332 can be opened to put the dyeing equipment 2 in an open state, and the right side fixed component and the second layer of leather can be reset by the cooperation of the right side electric hoist 311 and the electric slider 312.

[0054] While the right-side fixed component drives the second layer of leather to be dyed, several second layers of leather can be fixed on the left-side fixed component in the same way. After the right-side fixed component drives the dyed second layer of leather to leave the dyeing equipment 2, the left-side fixed component and the several second layers of leather can be placed in the dyeing equipment 2 in time and the dyeing can be completed in the same way to improve the overall dyeing efficiency.

[0055] Step 6: After the second layer of leather is impregnated and dyed, the second layer of leather after impregnation and dyeing can be dried by existing equipment, and then the dried second layer of leather can be removed from the fixed component for subsequent processing such as painting and cutting.

[0056] See also Figure 1 , Figure 2 , Figure 3 and Figure 5 A waterproof nubuck dyeing automatic feeding method is completed by using a waterproof nubuck dyeing automatic feeding device, comprising the following steps:

[0057] S1. Preparation stage: Select suitable split cowhide as the base material and clean the leather to remove impurities and grease on its surface.

[0058] S2. Pretreatment: Perform certain physical treatments on the second layer of leather, such as sanding, stretching and smoothing.

[0059] S3, preparing dye solution: select appropriate dye according to the required color, pour the dye into the dyeing frame 21 in the dyeing equipment 2 after weighing, add appropriate amount of clean water according to the ratio, and stir the dye thoroughly and evenly.

[0060] S4. Fixing leather: fix the two layers of leather placed at intervals from bottom to top through a fixing component.

[0061] S5. Loading and dyeing: The fixed assembly and the second layer of leather are moved as a whole to the dyeing frame 21 in the dyeing device 2 through the cooperation of the electric hoist 311 and the electric slider 312, and the second layer of leather is fully immersed in the dyeing liquid in the dyeing frame 21 for dyeing. At the same time, the dyeing device 2 needs to be closed and the temperature, pressure, time and other parameters of the dyeing device 2 need to be set as required.

[0062] S06, post-processing: after the dyeing is completed, the dyeing equipment 2 is opened, the fixed components and the second layer of leather after the dyeing are removed from the dyeing equipment 2, and the dyed second layer of leather is dried, painted, cut, waterproofed and other processing processes are performed on the second layer of leather through existing equipment.

[0063] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0064] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, an integral connection, or a sliding connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0065] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, all equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A waterproof nubuck dyeing automatic feeding device, comprising a fixed seat (1), a dyeing device (2) is arranged on the upper end of the fixed seat (1), and a dyeing frame (21) is arranged inside the dyeing device (2), Features: The left and right sides of the dyeing device (2) are both provided with a loading unit (3) located above the fixed seat (1); The feeding unit (3) comprises a fixing assembly for fixing the second layer of leather, the fixing assembly comprising two square frames (31) distributed in an upper and lower manner, the square frames (31) are provided with evenly arranged square holes, the four corners of the upper and lower square frames (31) are connected with support columns (32), the support columns (32) are externally sleeved with square plates (33) evenly arranged in an upper and lower manner, the upper ends of the square plates (33) are provided with rotating blocks (34) rotatably mounted on the outside of the support columns (32), a threaded telescopic rod (37) is installed on the side of the rotating block (34) away from the center of the square frame (31), a fixed block (38) is rotatably mounted on the telescopic end of the threaded telescopic rod (37), and a connecting rod (38) is connected between the fixed block (38) and the rotating block (34). A guide telescopic rod (39) is symmetrical with respect to the threaded telescopic rod (37), a pin (381) is installed on the upper end of the fixed block (38), a mounting rod (382) mounted on the upper end of the fixed block (38) is arranged on the side of the pin (381) close to the threaded telescopic rod (37), a limiting rod (383) is installed on the upper end of the fixed block (38) corresponding to the position of the guide telescopic rod (39), a moving block (384) is sleeved on the outside of the mounting rod (382), a connecting spring (385) sleeved on the outside of the mounting rod (382) is connected between the moving block (384) and the upper end of the mounting rod (382), and a limiting hole matching the limiting rod (383) is opened on the lower end of the moving block (384) away from the mounting rod (382); The loading unit (3) further comprises an electric hoist (311) arranged above the fixed assembly, electric sliders (312) are installed at both the front and rear ends of the electric hoist (311), the electric sliders (312) on the same left and right sides are slidably installed on the same transverse guide rail (313), and the transverse guide rail (313) is installed on the upper end of the fixed seat (1) through a support frame.

2. The automatic feeding device for waterproof nubuck dyeing according to claim 1, Features: The rotating blocks (34) are provided with insertion holes (35) evenly arranged around the corresponding support columns (32), and the upper ends of the square plates (33) on one side away from the center of the square frame (31) are plugged into the corresponding insertion holes (35) through insertion rods (36).

3. The automatic feeding device for waterproof nubuck dyeing according to claim 1, Features: The middle part of the outer sides of the square frame (31) is equipped with an elastic expansion plate (316), the inner walls of the four sides of the dyeing frame (21) are provided with strip grooves (317) that are slidably matched with the expansion ends of the corresponding elastic expansion plates (316) up and down, and the upper end of the dyeing frame (21) is equipped with a funnel-shaped protective frame (318).

4. The automatic feeding device for waterproof nubuck dyeing according to claim 3, Features: A cross (319) is installed between the upper ends of the fixed sections of the elastic telescopic plate (316) located above. The cross (319) is arranged at the lower end of the annular plate (321). An annular groove is provided at the lower end of the annular plate (321). The upper ends of the transverse and longitudinal sections of the cross (319) are both equipped with arc rods (322) slidably connected to the annular groove.

5. The automatic feeding device for waterproof nubuck dyeing according to claim 4, Features: A rotating column (323) is installed in the middle of the upper end of the cross (319), and the upper end of the rotating column (323) is connected to the output shaft of the motor (328). The motor (328) is installed on the upper end of the annular plate (321) through a support, and a protective shell is installed on the upper end of the support and is sleeved on the outside of the motor (328).

6. The automatic feeding device for waterproof nubuck dyeing according to claim 5, Features: The middle part of the upper end surface of the protective shell and the upper end surfaces of the front and rear sides of the annular plate (321) are connected to the feeding wire rope (329) arranged at the lower end of the corresponding electric hoist (311), and the left and right sides of the feeding wire rope (329) located in the middle are respectively connected to the upper end surfaces of the transverse sections corresponding to the cross (319) with inclined auxiliary wire ropes (331), and the upper end of the dyeing device (2) is hinged with two left-right symmetrical rectangular doors (332), and the rectangular doors (332) are provided with semicircular through holes for avoiding the wire ropes.

7. The automatic feeding device for waterproof nubuck dyeing according to claim 5, Features: The rotating column (323) is provided with arc grooves (324) evenly arranged in the circumferential direction on the outside, and a control rod (325) is provided on the front side of the rotating column (323). The control rod (325) is connected to the vertical plate installed at the lower end of the support for forward and backward sliding. The rear end of the control rod (325) is provided with an arc block (326) matched with the arc groove (324), and a telescopic spring (327) sleeved on the outside of the control rod (325) is connected between the arc block (326) and the vertical plate.

8. The automatic feeding device for waterproof nubuck dyeing according to claim 1, Features: The front end of the electric slider (312) located at the front side of the right-side loading unit (3) and the rear end of the electric slider (312) located at the rear side of the left-side loading unit (3) are both installed with alignment plates (314), and the upper end of the support frame is installed with a baffle (315) corresponding to the alignment plate (314).

9. A method for automatically feeding waterproof nubuck dyeing, It is characterized in that The method is completed by using the waterproof nubuck dyeing automatic feeding device as claimed in claim 1, comprising the following steps: S1. Preparation stage: Select suitable split leather as the base material and clean the leather to remove impurities and grease on its surface; S2. Pretreatment: Physical treatment of the second layer of leather, such as grinding, stretching and flattening; S3, preparing dye solution: selecting appropriate dye according to the desired color, pouring the dye into the dyeing frame (21) in the dyeing equipment (2) after weighing, adding appropriate amount of clean water according to the proportion, and stirring the dye thoroughly and evenly; S4, fixing leather: fixing two layers of leather spaced apart from bottom to top by means of a fixing component; S5, loading and dyeing: the fixing assembly and the second layer of leather are moved as a whole to the dyeing frame (21) in the dyeing device (2) by the cooperation of the electric hoist (311) and the electric slider (312), and the second layer of leather is fully immersed in the dyeing liquid in the dyeing frame (21) for dyeing. At the same time, the dyeing device (2) needs to be closed and the temperature, pressure and time parameters of the dyeing of the dyeing device (2) need to be set as required; S6, post-processing: after the dyeing is completed, the dyeing equipment (2) is opened, the fixed components and the second layer of leather after the dyeing are removed from the dyeing equipment (2), and the second layer of leather after the dyeing is dried, painted and cut by existing equipment.

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