A natural grain equipment and method for cowhide grain nap leather

Abstract

The present application belongs to the technical field of cowhide embossing processing, and particularly relates to a natural embossing equipment and method for cowhide embossed Nappa leather. In view of the problem that the embossing drum of cowhide needs to be stopped for multiple times for feeding, the following scheme is proposed, which comprises a bottom base plate, front and rear ends of one side of the top of the bottom base plate are provided with semicircular rotating blocks, one side of the two semicircular rotating blocks is provided with a hanging block through rotating installation of a shaft column in the middle, the top of the two hanging blocks is provided with a same barrel mounting plate, a rectangular hole is formed in the top of the barrel mounting plate, a lifting mechanism is arranged in the middle of the top of the bottom base plate away from the hanging block, and vertical plates are arranged in the middle of both sides of the top of the barrel mounting plate. The rubber piston connecting rod and the piston block in the pressure piston cylinder are moved, and the back and forth movement is formed in combination with the pressure spring, so that the effect of extraction and injection is achieved, the inside of the rotating barrel is injected with soaking raw materials, and time and labor are saved.

Description

Technical Field

[0001] This invention relates to the field of cowhide tumbled texture processing technology, and more particularly to a tumbled texture processing device and method for natural tumbled texture processing of Nappa leather. Background Technology

[0002] Tumbled leather, also known as tumbled tan leather, is a type of leather with a tumbled texture. Because cowhide has a wide range of applications, this type of leather is made by repeatedly tumbling the hide in a tumbler to create a uniform grain. The resulting texture is very clear and natural, resembling the grain of a lychee. Tumbled leather is also soft and has a more delicate and comfortable feel. This tumbled tanning process is also called "natural tumbled tan" because it "deepens" the original characteristics of the cowhide, based on its thickness and texture. Therefore, the thicker the original hide, the larger the resulting grain. Tumbled leather is currently the most common type of leather on the market and is widely used in the production of shoes and bags.

[0003] Chinese Patent Application No. 2015203965247 discloses a cowhide tanning apparatus, including a tanning drum and a material inlet disposed on the tanning drum. The tanning drum is a closed hollow cylindrical structure. Multiple axially oriented tanning plates are provided on the inner wall of the tanning drum, and multiple axially distributed reinforcing rings are clamped on the outer wall of the tanning drum. The tanning drum has rotating shafts at both ends, which are correspondingly connected to a support frame. The invention's inner wall has multiple axially oriented tanning plates, which can effectively improve the kneading effect on the cowhide. In addition, multiple tanning rods are also provided on the inner wall of the tanning drum, which can also agitate the cowhide in areas that the tanning plates cannot reach. The cooperation of these two aspects significantly improves the tanning effect. It is simple to manufacture and does not damage the leather. However, it cannot adjust the content of the soaking solution according to the tanning state of the cowhide.

[0004] The existing cowhide tumbling equipment requires multiple additions of various soaking solutions when processing the material on the drum. Each time, the drum must be stopped and the opening opened to feed the material, which is extremely cumbersome, inconvenient, time-consuming, and labor-intensive. Therefore, we need a cowhide tumbling and natural tumbling equipment and method for Nappa leather. Summary of the Invention

[0005] The purpose of this invention is to provide a device and method for natural tumbled textured Nappa leather to solve the problems mentioned in the background art.

[0006] This invention proposes a device for natural tumbled textured Nappa leather, comprising a bottom base plate, a barrel mounting plate, and a lifting block. A lifting mechanism is provided in the middle of the top of the bottom base plate on the side away from the lifting block. Vertical plates are provided in the middle of the top of both sides of the barrel mounting plate, and circular holes of different sizes are opened on both sides of the two vertical plates. Bearing rings are installed on the inner walls of the circular holes. The same rotating barrel is rotatably mounted inside the two bearing rings of different sizes. A cleaning mechanism is provided inside the rotating barrel. Multiple inclined plates are provided in the middle of the inner circumference of the rotating barrel. The inclined plates are arranged in pairs, and each pair of inclined plates is connected by a pneumatic telescopic rod.

[0007] The cleaning mechanism includes an inner cylindrical shaft. A gear chuck is provided on the side of the inner cylindrical shaft near the toothed rotating plate. A telescopic air chamber is provided on the side of the inner cylindrical shaft near the gear chuck. A limiting ring is provided on the upright plate near the gear chuck. The inner side of the limiting ring passes through the rotating barrel and is actively and sealed to the rotating barrel. A wedge-shaped groove adapted to the gear chuck is provided in the limiting ring. The groove diameter on the side of the wedge-shaped groove near the gear chuck is larger than the groove diameter on the side away from the gear chuck. The air outlet of the pneumatic telescopic rod between each set of inclined plates is connected to the telescopic air chamber in the inner cylindrical shaft through an air pipe and air passage provided in the perforated baffle plate.

[0008] This invention uses multiple inclined plates inside a rotating barrel, with two inclined plates connected by a pneumatic telescopic rod. By controlling the rotating barrel to rotate forward and backward, and in conjunction with a lint collection plate, the invention enables the detection of the tanning degree of cowhide and the replacement of the soaking solution inside the rotating barrel. At the same time, the pneumatic telescopic rod drives the flow of gas to regulate the amount of soaking solution entering the rotating barrel, thus achieving precise control of cowhide tanning.

[0009] Preferably, the front end of the barrel mounting plate away from the lifting block is provided with a load-bearing plate, and a power mechanism is provided on the top of the load-bearing plate. The rear end of the barrel mounting plate is provided with a rectangular plate near the load-bearing plate, and the front top of the rectangular plate has a mounting hole. The inner wall of the mounting hole is provided with a piston mechanism. The piston mechanism includes a pressure piston cylinder, which is fixed to the mounting hole of the rectangular plate by welding. The inner wall of the rectangular plate is provided with a piston block, and the front end of the piston block is connected to a rubber piston connecting rod. The front end of the rubber piston connecting rod is detachably installed with a collision push rod by bolts. The bottom of the front end of the collision push rod has a through hole. The rear end of the outer circumference of the pressure piston cylinder away from the lifting block is connected to a one-way output pipe, and the other end of the one-way output pipe is rotatably connected to the center position of one side of the rotating barrel.

[0010] Preferably, the barrel mounting plate has a rectangular groove plate at the rear end near the load-bearing plate, and a sliding rail is fixedly installed on the top of the rectangular groove plate by screws. The bottom of the collision push rod is slidably installed on the top of the sliding rail. A spring horizontal shaft is provided in the middle of the bottom front end of the rectangular plate, and the spring horizontal shaft passes through the through hole of the collision push rod. A pressure spring is sleeved on the rear end of the outer circumference of the spring horizontal shaft.

[0011] Preferably, the rectangular plate has triangular fixing blocks at the middle of the top of both ends, and the top of the two triangular fixing blocks is detachably installed with the same solution storage tank by bolts. The top of both sides of the solution storage tank is slidably installed with the same sliding groove cover plate, and the bottom of the rear end of the solution storage tank is connected to the rear end of the top of the outer wall of the pressure piston cylinder by the same one-way connecting pipe.

[0012] Preferably, the outer circumference of the rotating barrel is provided with a toothed rotating plate on the side near the collision push rod, and the outer circumference of the toothed rotating plate is provided with toothed blocks. A hexagonal push block is provided on the side of the toothed rotating plate near the collision push rod at a position off-center.

[0013] Preferably, the power mechanism includes two rectangular bases, which are welded and fixed to the top of the load-bearing plate. The top of the two rectangular bases is detachably mounted with the same servo motor by bolts. One end of the output shaft of the servo motor is provided with a gear plate, which meshes with the toothed blocks on the outer circumference of the toothed rotating plate.

[0014] Preferably, the cleaning mechanism includes an inner central shaft, and multiple fixed rods are provided on the outer circumference of the inner central shaft near the toothed rotating plate. The other ends of the multiple fixed rods are welded and fixed to the inner circumference of the rotating barrel. Two slidable circular plates are movably sleeved on the outer circumference of the inner central shaft. Multiple lint collection plates are detachably installed between the two slidable circular plates at an off-center position by bolts. Pressure sensors are provided on the lint collection plates, and a pull lever is provided on the side of the slidable circular plate away from the toothed rotating plate. Perforated baffles are fixedly installed between the multiple fixed rods by screws, and each of the perforated baffles has several openings.

[0015] Preferably, the lifting mechanism includes a hydraulic telescopic rod and a hoisting rail. The hydraulic telescopic rod is detachably installed on the top of the bottom base plate by bolts. The top of the hydraulic telescopic rod is provided with a sleeve block. The hoisting rail is fixed to the middle of the bottom of the barrel mounting plate near the load-bearing plate. An elliptical mounting block is slidably installed on the bottom of the hoisting rail. The bottom of the elliptical mounting block is provided with two hanging plates. The middle of the two hanging plates is provided with the same sleeve shaft. The sleeve block can be rotatably sleeved on the outer circumference of the sleeve shaft.

[0016] Preferably, the bottom base plate has support columns on both sides of its bottom end, the outer circumference of the rotating barrel has threads on the side away from the toothed rotating plate, and the threads are screwed to a barrel cover with internal threads. The front end and rear end of the top side of the bottom base plate are provided with semi-circular rotating blocks, and the middle of one side of each of the two semi-circular rotating blocks is rotatably mounted with a hanging block through a shaft column. The top of the two hanging blocks is provided with the same barrel mounting plate, and the top of the barrel mounting plate has a rectangular hole.

[0017] 10. A method for achieving a natural tumbled texture on cowhide Nappa leather, comprising the following steps:

[0018] S1: First, place the cowhide inside the open rotating barrel with an internal threaded lid. Inject the initial soaking acid solution through this opening. Rotate the internal threaded lid to close the inside of the rotating barrel. The servo motor starts running and drives the gear plate to rotate. During rotation, it will mesh with the toothed rotating plate, thereby driving the entire rotating barrel to rotate.

[0019] S2: When the toothed rotating plate rotates, it will drive the hexagonal push block to move in a circular trajectory. When the moving belt reaches the rear section, it will push the collision push rod to move backward, pushing the piston inside the pressure piston cylinder to move. When rotating continuously, after losing the push of the hexagonal push block, the pressure spring will push the collision push rod to pull the rubber piston connecting rod to reset, forming a suction and extrusion effect. The liquid raw material that is poured into the solution storage tank at regular intervals is sucked into the interior of the pressure piston cylinder. During extrusion, it will be injected into the interior of the rotating barrel through the one-way output pipe. Both the one-way output pipe and the one-way connecting pipe are equipped with one-way valves.

[0020] S3: When multiple raw materials are injected, stirred, mixed, and soaked, the lint-adhesive layer on the outer wall of the lint collection plate inside the rotating barrel will stick to the lint contained inside. After soaking is completed, the hydraulic telescopic rod pushes the bottom of one side of the barrel mounting plate to tilt, making it easier to discharge the cowhide inside the rotating barrel. At the same time, by pulling the folding rod, the lint adhering to the lint-adhesive layer of the two sliding circular plates and the lint collection plate installed in the middle is pulled out of the rotating barrel for easy cleaning. After completion, the barrel is reset.

[0021] The beneficial effects of this invention are as follows:

[0022] 1. This invention utilizes a device comprising a pressure piston cylinder, a toothed rotating plate, a rotating barrel, a pressure spring, a collision push rod, and a hexagonal push block. In use, the rotating toothed plate drives the hexagonal push block in a circular motion. When the rotating block reaches its rearward position, the hexagonal push block contacts the collision push rod, pushing the collision push rod backward. This, in turn, moves the rubber piston connecting rod and the piston block inside the pressure piston cylinder, creating a back-and-forth motion in conjunction with the pressure spring. This achieves the effect of extraction and injection, allowing the raw materials to be injected and soaked into the rotating barrel, saving time and effort.

[0023] 2. This invention incorporates a lint collection plate, a sliding circular plate, a pull lever, and an inclined plate. When the rotating barrel rotates, the inclined plate causes the internal cowhide to mix and soak, improving the soaking effect. Simultaneously, the lint collection plate comes into contact with the liquid, and the adhesive layer on the surface of the lint collection plate adsorbs and treats the residual lint, improving cleanliness and facilitating cleaning. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0025] Figure 2 This is a side top view of the three-dimensional structure of the present invention;

[0026] Figure 3 This is a bottom-view three-dimensional structural diagram of the present invention;

[0027] Figure 4 This is a three-dimensional structural diagram of the pressure piston cylinder of the present invention;

[0028] Figure 5 This is a schematic diagram of the internal three-dimensional structure of the rotating barrel of the present invention;

[0029] Figure 6 This is a three-dimensional structural diagram of the perforated baffle of the present invention;

[0030] Figure 7 This is a half-section three-dimensional structural diagram of the rotating barrel body of the present invention;

[0031] Figure 8 This is a schematic diagram of the half-section three-dimensional structure of the present invention;

[0032] Figure 9 This is a half-section bottom view of the three-dimensional structure of the present invention;

[0033] Figure 10 For the present invention Figure 8 Enlarged structural diagram of the mechanism at point A;

[0034] Figure 11 This is a cross-sectional view of the internal structure of the rotating barrel of the present invention.

[0035] In the diagram: 1. Bottom base plate; 2. Barrel mounting plate; 3. Support column; 4. Vertical plate; 5. Internally threaded barrel lid; 6. Bearing ring; 7. Rotating barrel; 8. Toothed rotating plate; 9. Sliding groove cover plate; 10. Triangular fixing block; 11. Solution storage tank; 12. Pressure piston cylinder; 13. Rectangular plate; 14. Pressure spring; 15. Spring horizontal shaft; 16. Rubber piston connecting rod; 18. Servo motor; 19. Rectangular base; 20. Load-bearing plate; 21. Gear plate; 22. Sliding track; 23. Rectangular groove plate; 24. 25. Hexagonal push block; 26. Semicircular rotating block; 27. Lifting block; 28. Elliptical mounting block; 29. ​​Sleeve shaft; 30. Hydraulic telescopic rod; 31. Sleeve block; 32. Lifting plate; 33. Lifting rail; 34. One-way output pipe; 35. Collision push rod; 36. Fixed rod; 37. Perforated baffle; 38. Fluff collection plate; 39. Inclined plate; 40. Sliding circular plate; 41. Pulling folding rod; 42. Inner cylindrical shaft; 43. Gear chuck; 44. Limiting clasp; 45. Wedge-shaped groove; 46. Pneumatic telescopic rod. Detailed Implementation

[0036] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0037] Example 1

[0038] Reference Figure 1-9A device for natural tumbled Nappa leather tumbled texture includes a bottom base plate 1. Semicircular rotating blocks 25 are provided at both the front and rear ends of one side of the top of the bottom base plate 1. A hanging block 26 is rotatably mounted on one side of each of the two semicircular rotating blocks 25 via a shaft. A barrel mounting plate 2 is provided on the top of the two hanging blocks 26, and a rectangular hole is opened on the top of the barrel mounting plate 2. A lifting mechanism is provided at the center of the top of the bottom base plate 1 on the side away from the hanging blocks 26. Vertical plates 4 are provided on the center of both sides of the top of the barrel mounting plate 2, and circular holes of different sizes are opened on both sides of the two vertical plates 4. Bearing rings 6 are installed on the inner walls of the circular holes. A rotating barrel 7 is rotatably mounted inside the two bearing rings 6 of different sizes. A load-bearing plate 20 is provided at the front end of the barrel mounting plate 2 on the side away from the hanging blocks 26, and a power mechanism is provided on the top of the load-bearing plate 20. The rear end of the barrel mounting plate 2 is supported by… A rectangular plate 13 is provided on one side near the load-bearing plate 20, and a mounting hole is opened at the top front end of the rectangular plate 13. A piston mechanism is provided on the inner wall of the mounting hole. A cleaning mechanism is provided inside the rotating barrel 7. During use, the rotating barrel 7 is driven to rotate by the power mechanism. While the rotating barrel 7 is rotating, the toothed rotating plate 8 installed on one side will push the piston mechanism to run. The running piston mechanism will draw the soaking material from the solution storage tank 11 through the one-way connecting pipe and enter the pressure piston cylinder 12. Then, it will be squeezed and injected into the rotating barrel 7 through the one-way output pipe 33. One-way valves are provided inside the one-way output pipe 33 connecting the rotating barrel 7 and the one-way connecting pipe connecting the solution storage tank 11. When soaking and stirring are completed, the lifting mechanism will lift one side of the barrel mounting plate 2 and lower the other side to clean the inside.

[0039] Reference Figure 2 , Figure 3 , Figure 6The piston mechanism includes a pressure piston cylinder 12, which is fixed to the mounting hole of a rectangular plate 13 by welding. A piston block is provided on the inner wall of the rectangular plate 13, and a rubber piston connecting rod 16 is connected to the front end of the piston block. A collision push rod 35 is detachably mounted to the front end of the rubber piston connecting rod 16 by bolts. A through hole is opened at the bottom of the front end of the collision push rod 35. A one-way output pipe 33 is connected through the rear end of the outer circumference of the pressure piston cylinder 12 on the side away from the hanging block 26. A one-way valve is provided inside the one-way output pipe 33 to ensure that the liquid inside the pressure piston cylinder 12 can only flow into the rotating barrel 7. The liquid flows through the unidirectional output pipe 33, and the other end of the unidirectional output pipe 33 is rotatably connected to the center position on one side of the rotating barrel 7. The collision push rod 35 is connected to the rubber piston connecting rod 16. When the collision push rod 35 is pushed by an external force, the rubber piston connecting rod 16 will push the piston block installed inside the pressure piston cylinder 12 to retract, forming a squeezing effect inside. The soaking liquid inside the pressure piston cylinder 12 will be input into the interior of the rotating barrel 7 through the unidirectional output pipe 33. At the same time, since the unidirectional output pipe 33 is connected to the rotating barrel 7 by rotation, the unidirectional output pipe 33 will not be affected when the rotating barrel 7 rotates.

[0040] Reference Figure 2 , Figure 6 , Figure 7 A rectangular groove plate 23 is provided at the rear end of the barrel mounting plate 2 near the load-bearing plate 20. A sliding rail 22 is fixedly installed on the top of the rectangular groove plate 23 by screws. The bottom of the collision push rod 35 is slidably installed on the top of the sliding rail 22. A spring horizontal shaft 15 is provided in the middle of the bottom front end of the rectangular plate 13. The spring horizontal shaft 15 passes through the through hole of the collision push rod 35. A pressure spring 14 is sleeved on the rear end of the outer circumference of the spring horizontal shaft 15. When the collision push rod 35 is subjected to external force and moves to the rear end, it will squeeze the pressure spring 14. After the external force is applied, the pressure spring 14 will react and push the collision push rod 35 to move on the sliding rail 22, which will drive the rubber piston connecting rod 16 and the piston block to move forward, forming a extraction effect.

[0041] Reference Figure 2 , Figure 1 The rectangular plate 13 has triangular fixing blocks 10 at the top center of both ends. The top of the two triangular fixing blocks 10 is detachably installed with the same solution storage tank 11 by bolts. The top of both sides of the solution storage tank 11 is slidably installed with the same sliding groove cover plate 9. The bottom rear end of the solution storage tank 11 is connected to the top rear end of the outer wall of the pressure piston cylinder 12 by the same one-way connecting pipe. The soaking solution that the staff regularly add inside the solution storage tank 11 is drawn into the pressure piston cylinder 12 through the one-way connecting pipe. The one-way connecting pipe is also equipped with a one-way valve. Similarly, it can only be drawn into the pressure piston cylinder 12.

[0042] Reference Figure 2 , Figure 4 , Figure 6 , Figure 7 A toothed rotating plate 8 is provided on the outer circumference of the rotating barrel 7 near the collision push rod 35, and toothed blocks are provided on the outer circumference of the toothed rotating plate 8. A hexagonal push block 24 is provided on the side of the toothed rotating plate 8 near the collision push rod 35 at an off-center position. When the toothed rotating plate 8 is driven to rotate by the gear plate 21, it will drive the hexagonal push block 24 to move in a circular trajectory. When it moves to the second half of the path, it will contact the collision push rod 35 and push the collision push rod 35 to move to the rear end on the sliding track 22. When the hexagonal push block 24 continues to rotate to the first half, it will lose the pushing force on the collision push rod 35, and the pressure spring 14 will push the collision push rod 35 forward.

[0043] Reference Figure 1 , Figure 2 , Figure 3 The power mechanism includes two rectangular bases 19, which are welded and fixed to the top of the load-bearing plate 20. The top of the two rectangular bases 19 is detachably mounted with the same servo motor 18 by bolts. One end of the output shaft of the servo motor 18 is provided with a gear plate 21, which meshes with the toothed blocks on the outer circumference of the toothed rotating plate 8. When the servo motor 18 is running, it will drive the gear plate 21 to rotate. At the same time, the gear plate 21 meshes with the toothed blocks on the outer circumference of the toothed rotating plate 8, thereby driving the toothed rotating plate 8 to rotate.

[0044] Reference Figure 5 , Figure 6 , Figure 7 , Figure 8The cleaning mechanism includes an inner cylindrical shaft 42, with multiple fixing rods 36 on the outer circumference of the inner cylindrical shaft 42 near the toothed rotating plate 8. The other ends of the fixing rods 36 are welded and fixed to the inner circumference of the rotating barrel 7. Two movable circular plates 40 are movably sleeved on the outer circumference of the inner cylindrical shaft 42. Multiple lint collection plates 38 are detachably installed between the two movable circular plates 40 at a position off-center by bolts. A pull lever 41 is provided on the side of the movable circular plate 40 away from the toothed rotating plate 8. Perforated baffles 37 are fixed between the multiple fixing rods 36 by screws. Each baffle 37 has several openings. When the barrel 7 is rotated, the perforated baffle 37 inside will limit the position of the soaked cowhide. At the same time, the outer surface of the lint collection plate 38 set on the inner central shaft 42 of the barrel will come into contact with the soaking liquid. The outer surface is provided with an adhesive layer, which will adhere to the lint in the soaking liquid. After soaking is completed, since the two sliding circular plates 40 are directly fitted on the inner central shaft 42 of the barrel, the two sliding circular plates 40 and the multiple lint collection plates 38 can be pulled out by pulling the lever 41 by rotating the opening of the barrel 7, so as to clean the lint on the surface of the lint collection plate 38.

[0045] Reference Figure 3 , Figure 4 , Figure 9 The lifting mechanism includes a hydraulic telescopic rod 29 and a hoisting rail 32. The hydraulic telescopic rod 29 is detachably installed on the top of the bottom base plate 1 by bolts. A sleeve block 30 is provided on the top of the hydraulic telescopic rod 29. The hoisting rail 32 is fixed to the middle of the bottom of the barrel mounting plate 2 near the load-bearing plate 20. An elliptical mounting block 27 is slidably installed on the bottom of the hoisting rail 32. Two hanging plates 31 are provided on the bottom of the elliptical mounting block 27. A common sleeve shaft 28 is provided in the middle between the two hanging plates 31. The sleeve block 30 is rotatably sleeved on the outer circumference of the sleeve shaft 28. The hydraulic telescopic rod 29 is installed at the bottom of the barrel mounting plate 2. At the same time, the barrel mounting plate 2 and the other side of the bottom base plate 1 are rotatably installed through the lifting block 26 and the semi-circular rotating block 25 to ensure that one side of the barrel mounting plate 2 can be lifted. When lifted, the elliptical mounting block 27 will move at the bottom of the lifting track 32. At the same time, the rotational connection between the sleeve shaft column 28 and the sleeve block 30 is used to meet the angle change that occurs during lifting. Lifting the barrel mounting plate 2 and rotating the barrel 7 causes the outlet of the rotating barrel 7 to be lowered, which facilitates the discharge of the cowhide and the soaking liquid inside.

[0046] Reference Figure 6 , Figure 7 , Figure 8 , Figure 9The bottom base plate 1 has support columns 3 on both sides of its bottom end. The outer wall of the rotating barrel 7 has threads on the side away from the toothed rotating plate 8, and the threads are screwed to the inner threaded barrel cover 5. The middle of the inner wall of the rotating barrel 7 has multiple inclined plates 39. The inclined plates 39 are in pairs, and each pair of inclined plates 39 is connected by a pneumatic telescopic rod 46. The inclined plates 39 will have a stirring effect on the leather inside the rotating barrel 7 when it is rotated, which will improve the stirring and mixing effect. At the same time, the opening of the rotating barrel 7 is sealed by the inner threaded barrel cover 5, leaving only the vent hole, which facilitates mixing and prevents the soaking liquid from splashing out when rotating.

[0047] Reference Figure 1 A method for achieving a natural tumbled texture on cowhide Nappa leather, comprising the following steps:

[0048] S1: First, place the cowhide inside the rotating barrel 7 with the open inner threaded barrel cover 5, leaving an exhaust hole for easy mixing. Inject the initial soaking acid solution through this hole, rotate the inner threaded barrel cover 5 to close the interior of the rotating barrel 7, and the servo motor 18 starts running, which will drive the gear plate 21 to rotate. At the same time, the gear plate 21 meshes with the toothed blocks on the outer circumference of the toothed rotating plate 8, thereby driving the toothed rotating plate 8 to rotate, and thus driving the rotating barrel 7 to rotate as a whole.

[0049] S2: When the toothed rotating plate 8 is driven to rotate by the gear plate 21, it will drive the hexagonal push block 24 to move in a circular trajectory. When it moves to the second half of the path, it will contact the collision push rod 35 and push the collision push rod 35 to move to the rear end on the sliding track 22. The collision push rod 35 is connected to the rubber piston connecting rod 16. When the collision push rod 35 is pushed by an external force, the rubber piston connecting rod 16 will push the piston block installed inside the pressure piston cylinder 12 to retract, forming a squeezing effect inside. The soaking liquid inside the pressure piston cylinder 12 will be input into the interior of the rotating barrel 7 through the one-way output pipe 33. At the same time, since the one-way output pipe 33 is connected to the rotating barrel 7 by rotation, when the rotating barrel 7 rotates... When in motion, it will not affect the one-way output pipe 33. When the hexagonal push block 24 continues to rotate to the front half, it will lose the pushing force on the collision push rod 35. The pressure spring 14 will push the collision push rod 35 forward to form a suction and extrusion effect, sucking the liquid raw materials that the staff regularly pour into the solution storage tank 11 into the pressure piston cylinder 12. When squeezed, it will be injected into the rotating barrel 7 through the one-way output pipe 33. The one-way output pipe 33 and the one-way connecting pipe are both equipped with one-way valves to ensure that the liquid inside the pressure piston cylinder 12 can only flow into the rotating barrel 7. Similarly, when the collision push rod 35 drives the rubber piston connecting rod 16 to move to the front end, it can only be drawn into the pressure piston cylinder 12.

[0050] S3: When multiple raw materials are injected, stirred, mixed, and soaked, the outer surface of the lint collection plate 38 is provided with an adhesive layer, which will adhere to the lint in the soaking solution. After soaking, since the two sliding circular plates 40 are directly fitted on the inner central shaft 42 of the barrel, the two sliding circular plates 40 and multiple lint collection plates 38 can be pulled out by pulling the folding rod 41 by rotating the opening of the barrel body 7 to clean the lint on the surface of the lint collection plate 38. The hydraulic telescopic rod 29 pushes the bottom of one side of the barrel mounting plate 2 to form an inclination, which facilitates the discharge of the leather inside the rotating barrel body 7. At the same time, the tilted rotating barrel body 7 facilitates the discharge of the soaking solution inside.

[0051] Example 2

[0052] In actual use, operators found that when tanning cowhide using this device in the tumble-texturing process, the quality and specifications of the cowhide fed into the rotating barrel 7 are different each time. Therefore, it is necessary to monitor the tanning status of the cowhide in the rotating barrel 7 in real time and adjust the amount of tanning solution fed into the rotating barrel 7 accordingly. When it is necessary to replace the solution that has completed the reaction in the rotating barrel 7, the cowhide is not fixed, which can easily cause the cowhide and solution to flow out of the rotating barrel 7 together, which is not conducive to the tanning of cowhide. Furthermore, because the lint collection plate 38 is located in the middle of the rotating barrel 7, the lint generated during the tanning process cannot be completely collected by the lint collection plate 38. Therefore, in order to solve the above technical problems, the device is improved according to the method described in this embodiment.

[0053] like Figure 10-11 As shown, a gear chuck 43 is provided on the side of the inner central shaft 42 near the toothed rotating plate 8. A telescopic air chamber is provided on the side of the inner central shaft 42 near the gear chuck 43. A limiting ring 44 is provided on the vertical plate 4 near the gear chuck 43. The inner side of the limiting ring 44 passes through the rotating barrel 7 and is actively and sealed to the rotating barrel 7. A wedge-shaped groove 45 is provided in the limiting ring 44 to match the gear chuck 43. The groove diameter of the wedge-shaped groove 45 on the side near the gear chuck 43 is larger than the groove diameter on the side away from the gear chuck 43. The air outlet of the pneumatic telescopic rod 46 between each set of inclined plates 39 is connected to the telescopic air chamber in the inner central shaft 42 through the air pipe and air passage set in the perforated baffle plate 37. A pressure sensor is provided on the lint collection plate 38.

[0054] First, when the cowhide placed in the rotating barrel 7 needs to be tanned, the servo motor 18 drives the gear plate 21 to rotate. The gear plate 21 drives the toothed rotating plate 8 to rotate, thereby causing the entire rotating barrel 7 to rotate. At the same time, the toothed rotating plate 8 drives the hexagonal push block 24 to move in a circular trajectory. When it moves to the latter half of the path, it will contact the collision push rod 35 and push the collision push rod 35 to move to the rear end on the sliding track 22. The collision push rod 35 is connected to the rubber piston connecting rod 16. When the collision push rod 35 is subjected to external... When pushed by force, the rubber piston connecting rod 16 pushes the piston block installed inside the pressure piston cylinder 12 to retract, creating a squeezing effect inside. The soaking liquid inside the pressure piston cylinder 12 is input into the interior of the rotating barrel 7 through the one-way output pipe 33, so that the soaking liquid comes into contact with the cowhide inside the rotating barrel 7. The rotation of the rotating barrel 7, combined with the multiple inclined plates 39, makes the cowhide fully contact the soaking liquid inside the rotating barrel 7. At the same time, the rotation of the inclined plates 39 separates the hair from the cowhide, thereby improving the tanning effect of the cowhide.

[0055] Secondly, by installing a pressure sensor on the lint collection plate 38, when the multiple inclined plates 39 on the rotating barrel 7 move the cowhide from the bottom to the top of the rotating barrel 7, the cowhide will naturally fall onto the lint collection plate 38 under the action of gravity, beating the cowhide and stretching it out through the rotation of the rotating barrel 7. This prevents the cowhide from being stacked, which would prevent it from fully contacting the soaking solution, thereby improving the tanning effect of the cowhide. During this process, the servo motor 18 is controlled to drive the rotating barrel 7 to rotate clockwise. Since the inclined plates 39 are set at an angle, this... When one of the inclined plates 39 rotates to the leftmost position of the rotating barrel 7, this inclined plate 39 is tilted downwards, causing the cowhide on it to slide downwards under gravity. At this time, by controlling the telescopic rod 46, the inclined plate 39 is retracted, causing the two inclined plates 39 to clamp the cowhide located between them. Because the inclined plates 39 are tilted downwards, the cowhide will slide downwards along the tilt direction of the inclined plates 39. Therefore, when the two inclined plates 39 approach each other to clamp the cowhide, only a local area of ​​the cowhide is clamped, and the entire cowhide is not clamped between the two inclined plates. Between plates 39, the contraction of the pneumatic telescopic rod 46 causes gas to enter the telescopic air chamber and push the gear chuck 43 to mesh with the limiting ring 44, thereby restricting the rotation of the inner central shaft 42. At this time, the inner central shaft 42 will not rotate with the rotating barrel 7. When the clamped cowhide moves to the top of the rotating barrel 7 and continues to rotate, the area of ​​the cowhide that is not clamped will fall vertically onto the lint collection plate 38 and become entangled on it. At this time, the pressure sensor detects the pressure value on the lint collection plate 38. Since the inclined plate 39 continues to rotate, the cowhide will be affected. The hide is gradually straightened between the inclined plate 39 and the lint collection plate 38. The pressure on the lint collection plate 38 will gradually increase until the hide is separated from the two inclined plates 39 due to the increasing tension during rotation. The pressure value is then restored to its initial state. The tanning effect of the hide is judged by the pressure value detected by the pressure sensor. If the hide still does not meet the tanning conditions after multiple tests, multiple pneumatic telescopic rods 46 are extended by controlling them, so that the gear chuck 43 moves away from the limit ring 44, increasing the amount of soaking liquid entering the rotating barrel 7, thereby achieving precise control of the hide tanning.

[0056] It should be noted that the degree of tanning of cowhide is directly proportional to its tensile strength. That is, the better the tanning effect, the better the flexibility of the cowhide and the higher its tensile strength. Therefore, the flexibility of cowhide can be detected by the pressure value detected by the pressure sensor, thereby determining the degree of tanning.

[0057] Finally, when the soaking solution inside the rotating drum 7 needs to be replaced, the servo motor 18 is controlled to drive the rotating drum 7 to rotate counterclockwise. Since the inclined plates 39 are tilted, when one of the inclined plates 39 rotates to the far right of the rotating drum 7, this inclined plate 39 is tilted upwards, preventing the hide on it from separating. At this point, the pneumatic telescopic rod 46 is controlled to retract the inclined plate 39, causing the two inclined plates 39 to clamp the hide between them. Because the inclined plates 39 are tilted upwards, the two inclined plates 39 will clamp the hide between them as a whole, and as the rotating drum 7 rotates... The rotation of the device causes multiple inclined plates 39 to fix various hides inside the rotating barrel 7 between two inclined plates 39. Then, the rotation of the inclined plates 39 mixes the impurities adsorbed inside the rotating barrel 7 with the soaking solution. By controlling the hydraulic telescopic rod 29, the bottom of one side of the barrel mounting plate 2 is tilted, discharging the soaking solution from the rotating barrel 7. Simultaneously, as the multiple pneumatic telescopic rods 46 retract, excess gas pushes the gear chuck 43 to fully engage with the limiting ring 44, preventing the soaking solution inside the pressure piston cylinder 12 from entering the rotating barrel 7. This effectively avoids the problem of incomplete solution replacement during solution changes, which could affect the tanning process.

[0058] It should be noted that the present invention sets multiple sets of inclined plates 39 inside the rotating barrel 7, and connects two inclined plates 39 through a pneumatic telescopic rod 46. By controlling the rotating barrel 7 to rotate forward and backward, and in conjunction with the lint collection plate 38, the degree of tanning of cowhide can be detected and the soaking solution inside the rotating barrel 7 can be replaced. At the same time, the amount of soaking solution entering the rotating barrel 7 can be adjusted by the flow of gas driven by the pneumatic telescopic rod, so as to achieve precise control of cowhide tanning.

[0059] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A natural grain equipment for cowhide grain nappe leather, comprising a bottom base plate, a barrel mounting plate and a hanging block, characterized in that, The middle part of the bottom of the bottom substrate is provided with a lifting mechanism, the top of the barrel mounting plate is provided with two vertical plates, and the two vertical plates are provided with different size round holes on the two sides, and the inner wall of the round hole is provided with a bearing ring, and the inside of the two different size bearing rings is provided with a same rotating barrel, the inside of the rotating barrel is provided with a cleaning mechanism, the middle part of the circumferential inner wall of the rotating barrel is provided with a plurality of inclined plates, the inclined plates are two by two, and the inclined plates are connected by a pneumatic telescopic rod. The cleaning mechanism comprises a barrel inner central shaft, a gear chuck is arranged on one side of the barrel inner central shaft close to the toothed rotating plate, an expansion air cavity is arranged on one side of the barrel inner central shaft close to the gear chuck, a limiting snap ring is arranged on the vertical plate close to the gear chuck, the limiting snap ring is in sealing active connection with the rotating barrel, a wedge-shaped clamping groove matched with the gear chuck is arranged in the limiting snap ring, the diameter of the slot close to the gear chuck is larger than that of the slot away from the gear chuck, and the air outlet ends of the pneumatic telescopic rods between each group of inclined plates are in communication with the expansion air cavity in the barrel inner central shaft through the air pipe and air channel arranged on the hole partition plate. The front end of the barrel mounting plate away from the lifting block is provided with a bearing plate, and the top of the bearing plate is provided with a power mechanism, the rear end of the barrel mounting plate close to the bearing plate is provided with a rectangular plate, the front end top of the rectangular plate is provided with a mounting hole, the inner wall of the mounting hole is provided with a piston mechanism, the piston mechanism comprises a pressure piston cylinder, the pressure piston cylinder is fixed in the mounting hole of the rectangular plate by welding, the inner wall of the rectangular plate is provided with a piston block, the front end of the piston block is connected with a rubber piston connecting rod, the front end of the rubber piston connecting rod is detachably connected with a collision pushing rod through bolts, the front end bottom of the collision pushing rod is provided with a through hole, the rear end of the circumferential outer wall of the pressure piston cylinder away from the lifting block is connected with a one-way output pipe, and the other end of the one-way output pipe is rotatably connected to the central position of one side of the rotating barrel. The power mechanism comprises two rectangular bases, and the two rectangular bases are fixed on the top of the bearing plate by welding, the same servo motor is detachably mounted on the top of the two rectangular bases by bolts, and the output shaft of the servo motor is provided with a gear plate. The rear end of the barrel mounting plate close to the bearing plate is provided with a rectangular groove plate, the top of the rectangular groove plate is fixedly provided with a sliding rail through screws, the bottom of the collision pushing rod is slidingly installed on the top of the sliding rail, the middle part of the bottom of the front end of the rectangular plate is provided with a spring horizontal shaft, the spring horizontal shaft passes through the through hole of the collision pushing rod, and the rear end of the circumferential outer wall of the spring horizontal shaft is sleeved with a pressure spring. The middle part of the top of the two ends of the rectangular plate is provided with a triangular fixed block, and the same solution storage tank is detachably mounted on the top of the two triangular fixed blocks by bolts, and the same sliding groove cover plate is slidingly installed on the top of the two sides of the solution storage tank, and the same one-way connecting pipe is connected between the rear end bottom of the solution storage tank and the top rear end of the outer wall of the pressure piston cylinder. The circumferential outer wall of the rotating barrel body is provided with a toothed rotating plate near the side of the collision pushing rod, and the circumferential outer wall of the toothed rotating plate is provided with a tooth block. The circumferential outer wall of the rotating barrel body is provided with a toothed rotating plate near the side of the collision pushing rod, and the circumferential outer wall of the toothed rotating plate is provided with a tooth block.

2. A natural graining apparatus for buffing nappa leather according to claim 1, wherein The lifting mechanism comprises a hydraulic telescopic rod and a hoisting track, and the hydraulic telescopic rod is detachably installed on the top of the bottom base plate through bolts.

3. A natural graining apparatus for cowhide graining Nappa leather as claimed in claim 2, wherein, The bottom base plate is provided with a supporting column on both sides of the two ends of the bottom, the circumferential outer wall of the rotating barrel body is provided with a thread away from the toothed rotating plate, and the thread is provided with an internally threaded lid through screwing.

4. A method of natural graining of cowhide grained Nappa leather, said method of natural graining of cowhide grained Nappa leather is carried out by using the equipment for natural graining of cowhide grained Nappa leather according to claim 3, characterized in that, As follows: S1: First, place the cowhide inside the rotating barrel body with the opened internally threaded lid, pour the preliminary soaked acid solution into the barrel through the opening, rotate the internally threaded lid to close the inside of the rotating barrel body, start the servo motor, drive the gear plate to rotate, and engage the toothed rotating plate during rotation, thereby driving the rotating barrel body to rotate as a whole; S2: When driving the toothed rotating plate to rotate, the hexagonal push block will move in a circular trajectory, and when the rear section moves, it will push the collision pushing rod to retreat, and the piston inside the pressure piston cylinder will move, and when the rotation continues, the pressure spring will push the collision pushing rod to pull the rubber piston connecting rod to reset after losing the push of the hexagonal push block, forming an extraction and extrusion effect, the liquid raw material poured into the solution storage tank is sucked into the inside of the pressure piston cylinder, and when extruded, it is injected into the inside of the rotating barrel through the one-way output pipe, and the inside of the one-way output pipe and the one-way connecting pipe is provided with a one-way valve; S3: when the mixing and soaking of the multiple raw materials are completed, the outer wall of the lint collecting plate in the rotating barrel is provided with a lint sticking layer to stick the lint contained in the barrel, after the soaking is completed, the hydraulic telescopic rod pushes the bottom of the barrel mounting plate on one side to form an inclination, so as to facilitate the discharge of the hide in the rotating barrel, and at the same time, the folding rod is pulled to pull out the lint adhered to the lint sticking layer of the two slidable circular plates and the lint collecting plate in the middle from the rotating barrel, so as to facilitate cleaning, and then the two slidable circular plates and the lint collecting plate in the middle are reset.

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