Pickling device and pickling method for leather production and processing

Abstract

The present application relates to the technical field of leather processing devices, and in particular to a pickling device and a pickling method for leather production and processing. The following technical scheme is proposed: it includes a pickling box, a material guide is provided on one side of the upper end of the pickling box, and also includes: two groups of rotating lead-in parts arranged inside the pickling box, which are used to intermittently and spacedly roll up the leather into the pickling box; the rotating lead-in parts include an air pipe that runs through and is rotatably connected to the side wall of the pickling box, and the two groups of support pipes are connected to a plurality of groups of ring-shaped rolling support parts on the side close to each other. The present application arranges a rotating lead-in part inside the pickling box, and under the drive of the air source driving mechanism, the rotating lead-in part can roll up the leather to be pickled into the interior of the pickling box at intervals, so that the front and back sides of the leather can be fully in contact with the acid solution when the leather is soaked, and the leather is ensured to be complete on the premise of being fully pickled, and local damage to the leather is prevented.

Description

Technical Field

[0001] The present application relates to the technical field of leather processing equipment, and in particular to a pickling device and a pickling method for leather production and processing. Background Art

[0002] Leather is an animal skin that is not easily rotten or damaged and is obtained through physical and chemical processes such as dehairing and tanning. It is widely used in the fields of footwear, clothing, luggage, etc. Leather can be divided into split leather, full-grain leather, etc. according to its different properties.

[0003] The steps of leather processing are mainly divided into three sections: preparation section, tanning section and finishing section. The preparation section requires pickling of leather. Pickling of leather is to treat bare leather with acid and salt solution to adjust the pH value of leather, promote the penetration of tanning materials, increase the softness of leather, and remove impurities during the pickling process.

[0004] In the process of pickling, the leather of the conventional leather pickling device is difficult to fully contact with the acid solution, and the leather cannot be fully and comprehensively pickled. Therefore, the patent with the announcement number: CN109112237B discloses a leather pickling device for basketball production, which drives the rotating mechanism and the net box to move up and down through the lifting mechanism. When the net box enters the processing frame, the rotating mechanism drives the net box to rotate for liquid immersion treatment, so that the leather can fully contact with the acid solution, achieving the effect of high stirring efficiency, so that the leather is fully in contact with the acid solution, and the pickling effect is improved. However, the above patent still has certain disadvantages in the process of pickling, because the leather is directly placed in the processing frame during the pickling process, and the leather is in a mess after the pickling is completed; although the leather is fully in contact with the acid solution and soaked during repeated stirring, the leather may be partially damaged during pickling. Summary of the invention

[0005] The purpose of the present application is to address the technical problems pointed out in the background art that leather becomes a mess during pickling and repeated stirring may cause local damage to the leather, and to propose a pickling device and a pickling method for leather production and processing.

[0006] On the one hand, the present application proposes a pickling device for leather production and processing, comprising a pickling box, a material guide member is provided on one side of the upper end of the pickling box, and further comprising:

[0007] Two sets of rotating lead-in parts are arranged inside the pickling box, which are used for intermittent and spaced winding to lead the leather into the pickling box;

[0008] The rotary introduction member includes an air pipe that penetrates and is rotatably connected to the side wall of the pickling box, a winding member is connected between the two air pipes through a transfer plate, a plurality of support pipes are equidistantly connected to the sides of the two air pipes, and a plurality of groups of winding support members distributed in an annular manner are connected to the sides of the two groups of support pipes that are close to each other;

[0009] Sealing discs are rotatably connected in the two air delivery pipes, and an air source driving mechanism is arranged between the two sealing discs to intermittently drive a plurality of groups of annularly distributed winding support members from the inside to the outside in sequence;

[0010] The sealing disc is provided with a winding transmission mechanism for driving the winding member.

[0011] Preferably, the winding support comprises an air cylinder connected to the support tube, a piston plate is slidably connected inside the air cylinder, and an end of the piston plate away from the support tube is fixedly connected to a pneumatic roller;

[0012] The inner wall of one end of the air cylinder close to the support tube is fixedly connected to a limiting protrusion for limiting the inner side of the piston plate, and the inner wall of one end of the air cylinder away from the support tube is fixedly connected to a limiting ring for limiting the outer side of the pneumatic roller;

[0013] Touch sensors are embedded in the inner walls of several limit rings corresponding to one of the support tubes, and the touch sensors are arranged in order from the axis of the gas transmission pipe to the outside: touch sensor A, touch sensor B, and touch sensor C.

[0014] Preferably, the support tube is internally connected with a plurality of air guides located between two adjacent winding support members, the air guides are provided with air opening valves, the support tube is fixedly connected with the air delivery pipe, and a through air delivery hole is provided on the contact surface between the support tube and the air delivery pipe;

[0015] A bracket is fixedly connected to the side wall of the pickling box, a transmission shaft is rotatably connected to the bracket, the transmission shaft and two air pipes are driven by a pulley assembly, and the transmission shaft is fixedly connected to the output shaft of an external third motor.

[0016] Preferably, the winding member comprises an inner cylinder rotatably connected between two adapter plates, the side wall of the inner cylinder is fixedly connected to an outer cylinder, the side wall of the outer cylinder is provided with a groove, and a clamping plate is clamped in the groove for fixing the end of the leather.

[0017] Preferably, the air source driving mechanism comprises a bidirectional screw rotatably connected between two sealing disks, a rectangular cylinder is further connected between the two sealing disks, and the bidirectional screw is located in the rectangular cylinder;

[0018] The outer transmission sleeve of the bidirectional screw is provided with two symmetrically arranged transmission blocks, and the outer sliding sleeve of the rectangular cylinder is provided with two symmetrically arranged air control plates. The outer rings of the two air control plates are in sliding contact with the inner wall of the inner cylinder, and the two air control plates are magnetically attracted to the two transmission blocks respectively and move synchronously.

[0019] Preferably, the outer walls on both sides of the pickling box are connected with U-shaped plates, and the inner walls of the two U-shaped plates are fixedly connected with a pair of support rods, and the two support rods are respectively fixedly connected to the two sealing disks, and the two pairs of support rods respectively support the two sealing disks.

[0020] Preferably, the winding transmission mechanism comprises a rotating shaft penetrating the sealing disk and rotatably connected to the sealing disk, the rotating shaft extends into the inner cylinder, a gear is fixedly sleeved at the end of the rotating shaft, and an inner gear ring meshing with the gear is fixedly connected to the inner side wall of the inner cylinder;

[0021] A second motor is installed on the inner wall of one of the U-shaped plates, and an output shaft of the second motor is fixedly connected to the end of the rotating shaft.

[0022] Preferably, the material guide member comprises a feed port opened on the side of the pickling box, the inner wall of the pickling box is connected to a support roller, and the inner wall of the pickling box is also provided with a guide roller member located above the support roller;

[0023] The upper end of the pickling box is rotatably connected with a box cover, and one side of the lower end of the pickling box is connected with a drain pipe, and a valve is arranged on the drain pipe.

[0024] Preferably, a controller is further included, the output end of the controller is connected to the input ends of the first motor, the second motor and the third motor, and the output ends of the touch sensor A, the touch sensor B and the touch sensor C are electrically connected to the input ends of the first motor and the controller.

[0025] On the other hand, the present application proposes a pickling method based on a pickling device for leather production and processing, comprising the following steps:

[0026] S1: First, the leather to be pickled is passed through the material guide into the pickling box, the entrance end of the leather is pressed into the groove of the side wall of the outer cylinder, and then the clamping plate is clamped in the groove to fix the entrance end of the leather on the side wall of the outer cylinder; then an acid solution is added into the pickling box;

[0027] S2: Start the first motor to drive the air source driving mechanism, so that the two air control plates move away from each other for the first time, and the gas inside the inner cylinder is squeezed to the two groups of support tubes for the first time, so that a group of piston plates corresponding to the touch sensor A moves away from the support tube under the action of air pressure, and a corresponding group of annularly distributed pneumatic rollers are squeezed outward;

[0028] When the piston plate contacts the limit ring, the touch sensor A receives the induction signal, and the controller controls the first motor to turn off, and then starts the external third motor, which drives the two air pipes to rotate (clockwise) through the pulley assembly, and then drives the two groups of support pipes to complete the first circular motion, so that the leather is wound around the outside of the several pneumatic rollers extended from the first group;

[0029] S3: Repeat S2 for several times, so that the leather is wound around several groups of pneumatic rollers distributed in an annular shape from the inside to the outside in sequence, until the leather is wound around the outermost pneumatic roller, and the spacing between each circle of leather is maintained. During the process of the leather being wound into the pickling tank, both sides are fully in contact with the acid solution, and both sides can be fully soaked during the soaking;

[0030] S4: When the leather in the pickling box has finished soaking, the output shaft of the first motor rotates in the opposite direction, driving the two air control plates to move closer, so that negative pressure is present in the two sets of support pipes, so that the several sets of pneumatic rollers are sucked into the corresponding air cylinders, so that the leather is loose in the pickling box after the pickling is completed;

[0031] S5: starting the second motor, thereby driving the winding transmission mechanism, driving the winding member to rotate (counterclockwise), and winding the soaked leather on the outside of the winding member;

[0032] S6: Repeat S2 and S5, introduce leather that needs to be pickled again, roll it up after the pickling is completed, and continue to soak the leather in the acid solution after rolling it up for a second soaking.

[0033] Compared with the prior art, this application has the following beneficial technical effects:

[0034] The present invention provides a rotary introduction member inside the pickling box. Under the drive of the air source driving mechanism, the rotary introduction member can roll the leather to be pickled into the pickling box at intervals, so that the front and back sides of the leather can fully contact with the acid solution during the pickling, and the double-sided soaking can be completed neatly, thereby ensuring the completeness of the leather under the premise of full pickling and preventing local damage to the leather.

[0035] By arranging a winding transmission mechanism inside the inner cylinder, the winding transmission mechanism is driven to roll the leather after pickling on the outside of the outer cylinder, so as to complete the secondary soaking. After the winding is completed, the rotating introduction member is used to introduce the leather to be pickled again, so that the primary pickling and the secondary pickling are carried out synchronously, and it is convenient to take out the leather in an orderly manner after the pickling is completed.

[0036] By arranging an air guide between two adjacent winding support members inside the support tube and arranging an air opening valve on the air guide, a plurality of groups of annularly distributed pneumatic rollers extend from the inner circle to the outer circle in sequence when extending, thereby ensuring the stability of the spacing introduced into the leather. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is based on a three-dimensional diagram of a pickling device used in leather production and processing;

[0038] Figure 2 This application Figure 1 Schematic diagram of the structure after the middle box cover is removed;

[0039] Figure 3 yes Figure 2 A front cross-sectional view of

[0040] Figure 4 yes Figure 2 Rear view of

[0041] Figure 5 yes Figure 3 The enlarged structural diagram at A in the middle;

[0042] Figure 6 yes Figure 3 The enlarged structural diagram at B in the middle;

[0043] Figure 7 yes Figure 3 The enlarged structural diagram at C in the middle;

[0044] Figure 8 yes Figure 3 The enlarged structural diagram at D in the middle;

[0045] Fig. 9 It is based on the control principle diagram of the pickling device used in leather production and processing.

[0046] Reference numerals: 1, pickling box; 2, box cover; 3, U-shaped plate; 4, drain pipe;

[0047] 5. Material guide; 501. Material feed port; 502. Support roller; 503. Guide roller;

[0048] 6. Rotating lead-in member; 61. Support pipe; 62. Winding support member; 63. Gas transmission pipe;

[0049] 611, air-opening valve; 612, air guide; 613, air delivery hole;

[0050] 621, air cylinder; 622, limiting ring; 623, piston plate; 624, pneumatic roller;

[0051] 7. Winding piece; 71. Inner cylinder; 72. Outer cylinder; 73. Clamping plate; 74. Control slot;

[0052] 8. Air source driving mechanism; 81. Bidirectional screw; 82. Transmission block; 83. Air control board; 84. Rectangular cylinder;

[0053] 9. Winding transmission mechanism; 91. inner gear ring; 92. rotating shaft; 93. gear;

[0054] 10. Adapter plate; 11. Pulley assembly; 12. First motor; 13. Second motor; 14. Sealing plate; 15. Support rod; 16. Bracket; 17. Transmission shaft. DETAILED DESCRIPTION

[0055] The technical solution of the present application is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0056] The components of the embodiments of the present application generally described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed, but merely represents the selected embodiments of the present application.

[0057] Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of this application.

[0058] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0059] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected 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 this application can be understood according to specific circumstances. Example

[0060] like Figure 1-9As shown, the pickling device for leather production and processing proposed in the present application includes a pickling box 1, the upper end of which is rotatably connected to a box cover 2, and the lower end of the pickling box 1 is connected to a drain pipe 4, on which a valve is provided. After the leather is pickled, the valve is opened to discharge the acidic solution, and the acidic solution is collected for subsequent unified treatment. A material guide 5 is provided on one side of the upper end of the pickling box 1, and the material guide 5 includes a feed port 501 opened on the side of the pickling box 1, and the inner wall of the pickling box 1 is connected to a support roller 502, and the inner wall of the pickling box 1 is also provided with a guide roller 503 located above the support roller 502, the support roller 502 is lower than the feed port 501, and the feed port 501 is inclined toward the support roller 502, which plays a guiding role when the leather enters, and the guide roller 503 includes an inverted U-shaped strip connected to the inner wall of the pickling box 1, and the bottom end of the inverted U-shaped strip is rotatably connected to an upper material guide roller, and the upper end of the inverted U-shaped strip is flush with the upper end surface of the pickling box 1, and the upper end of the inverted U-shaped strip is provided with a buffer strip. When the box cover 2 is closed, the buffer strip can play a role of buffering support for the box cover 2, thereby reducing the collision force between the box cover 2 and the pickling box 1, and reducing the noise when the box cover 2 is closed.

[0061] It also includes two sets of rotating introduction members 6 arranged inside the pickling box 1, which are used for intermittent and spaced winding to introduce the leather into the pickling box 1. After the leather enters the pickling box 1, there will be no folding contact, so that the leather is fully in contact with the acidic liquid in the pickling box 1, ensuring the effect of leather pickling.

[0062] Furthermore, the rotating introduction member 6 includes an air pipe 63 that passes through and is rotatably connected to the side wall of the pickling box 1, and a winding member 7 is connected between the two air pipes 63 through an adapter plate 10. The winding member 7 is rotatably connected to the two adapter plates 10, and the air pipe 63 is rotatably connected to the adapter plate 10. The sides of the two air pipes 63 are equidistantly connected to a plurality of support pipes 61, and the sides of the two groups of support pipes 61 that are close to each other are connected to a plurality of groups of winding support members 62 distributed in a ring.

[0063] There are sealing disks 14 rotatably connected inside the two air pipes 63. The sealing disks 14 are connected to the inner wall of the air pipe 63 through mechanical seals to prevent gas leakage inside the air pipe 63. An air source driving mechanism 8 is arranged between the two sealing disks 14 to intermittently drive several groups of annularly distributed winding supports 62 from the inside to the outside in sequence, thereby smoothly completing the introduction of the leather spacing in a winding manner.

[0064] It should be noted that the sealing disk 14 is penetrated by a winding transmission mechanism 9 for driving the winding member 7, so that the leather can be wound on the outside of the winding member 7 after the pickling is completed, so as to finish the leather after the pickling, and make the finished leather undergo a second pickling.

[0065] Among them, the winding support 62 includes an air cylinder 621 connected to the support tube 61, and a piston plate 623 is slidably connected inside the air cylinder 621. The end of the piston plate 623 away from the support tube 61 is fixedly connected to a pneumatic roller 624. When the leather enters the pickling box 1, it is wrapped around the extended pneumatic roller 624. The two groups of annularly distributed pneumatic rollers 624 arranged opposite to each other support the leather at both ends (introduced in a winding manner), reducing the contact area between the pneumatic roller 624 and the leather, so that both sides of the leather are fully in contact with the acid solution.

[0066] It should be noted that a limiting block is fixedly connected to the inner wall of one end of the air cylinder 621 close to the support tube 61, which is used to limit the inner side of the piston plate 623 to prevent the piston plate 623 from being sucked into the support tube 61; a limiting ring 622 is fixedly connected to the inner wall of one end of the air cylinder 621 away from the support tube 61, which is used to limit the outer side of the pneumatic roller 624 to prevent the piston plate 623 from being separated from the air cylinder 621 under the squeezing of the gas.

[0067] Touch sensors are embedded in the inner walls of the plurality of limit rings 622 corresponding to one of the support tubes 61 , and the plurality of touch sensors are arranged in order from the axis of the gas delivery tube 63 outwards as touch sensor A, touch sensor B, and touch sensor C. The interior of the support tube 61 is connected to a plurality of air guide members 612 located between two adjacent winding support members 62, and an air opening valve 611 is provided on the air guide member 612. The support tube 61 is fixedly connected to the air supply pipe 63 (a certain gap is maintained between the support tube 61 and the inner wall of the pickling box 1), and a through air supply hole 613 is provided on the contact surface between the support tube 61 and the air supply pipe 63. When the air supply hole 613 is filled with gas into the support tube 61, the gas first squeezes out the plurality of annularly distributed pneumatic rollers 624 on the inner side, and then the adjacent air opening valve 611 is opened under the action of air pressure, and the adjacent outer pneumatic rollers 624 are squeezed outward under the action of air pressure. In this way, the plurality of annularly distributed pneumatic rollers 624 are extended outward in sequence from the inside to the outside with the air supply pipe 63 as the center (after the inner annularly distributed pneumatic roller 624 has rolled up a circle of leather, the adjacent outer annularly distributed pneumatic roller 624 is extended outward to continue winding the leather).

[0068] A bracket 16 is fixedly connected to the side wall of the pickling box 1, and a transmission shaft 17 is rotatably connected to the bracket 16. The transmission shaft 17 and the two air pipes 63 are driven by a pulley assembly 11. Both ends of the transmission shaft 17 and the outer sides of the two air pipes 63 are provided with pulleys. The two sets of pulleys are driven by belts, and the transmission shaft 17 is fixedly connected to the output shaft of an external third motor.

[0069] Furthermore, the winding member 7 includes an inner cylinder 71 rotatably connected between the two adapter plates 10, the side wall of the inner cylinder 71 is fixedly connected to an outer cylinder 72, the side wall of the outer cylinder 72 is provided with a groove, a card plate 73 is clamped in the groove, and is used to fix the end of the leather, and a pair of control grooves 74 are provided on the outer surface of the card plate 73 to facilitate the control of the card plate 73, and when the card plate 73 is controlled, it is operated by an external clamping plate taking mechanism (here is the existing technical structure, which will not be repeated here). The air source driving mechanism 8 includes a bidirectional screw 81 rotatably connected between the two sealing plates 14, and a rectangular cylinder 84 is also connected between the two sealing plates 14, and the bidirectional screw 81 is located in the rectangular cylinder 84.

[0070] The outer transmission sleeve of the bidirectional screw 81 is provided with two symmetrically arranged transmission blocks 82, which are slidably arranged on the inner side of the rectangular cylinder 84, and the rectangular cylinder 84 can guide the transmission block 82. The outer sliding sleeve of the rectangular cylinder 84 is provided with two symmetrically arranged air control plates 83, and the outer circles of the two air control plates 83 are in sliding contact with the inner wall of the inner cylinder 71. Magnets are arranged on the outer side of the transmission block 82 and the inner side of the air control plate 83, and the two magnets attract each other, so that the two air control plates 83 are respectively magnetically attracted to the two transmission blocks 82 and move synchronously.

[0071] Among them, the outer walls on both sides of the pickling box 1 are connected with U-shaped plates 3, and the inner walls of the two U-shaped plates 3 are fixedly connected with a pair of support rods 15. The two support rods 15 are respectively fixedly connected to the two sealing disks 14. The two pairs of support rods 15 respectively support the two sealing disks 14, so that the inner sides of the two gas pipes 63 are in a sealed state.

[0072] Specifically, the winding transmission mechanism 9 includes a rotating shaft 92 that passes through the sealing disk 14 and is rotatably connected to the sealing disk 14, the rotating shaft 92 extends into the inner cylinder 71, and a gear 93 is fixedly sleeved on the end of the rotating shaft 92. The inner wall of the inner cylinder 71 is fixedly connected with an inner gear ring 91 that meshes with the gear 93 for transmission. A second motor 13 is installed on the inner wall of one of the U-shaped plates 3, and the output shaft of the second motor 13 is fixedly connected to the end of the rotating shaft 92. The gear 93 is meshed with the inner gear ring 91 to drive the inner cylinder 71 to rotate, and finally the leather after pickling is rolled up on the outside of the outer cylinder 72.

[0073] It should be noted that in the present application, the rotating shaft support members inside the pickling box 1 all adopt mechanical seals.

[0074] The length of the outer cylinder 72 is slightly smaller than the distance between the air cylinders 621 on both sides, and the width of the introduced leather is adapted to the length of the outer cylinder 72 .

[0075] Furthermore, it also includes a controller, the output end of the controller is connected to the input ends of the first motor 12, the second motor 13 and the third motor, the output ends of the touch sensor A, the touch sensor B, and the touch sensor C are electrically connected to the first motor 12 and the input end of the controller, when the controller controls the first motor 12 to work, it drives the air source drive mechanism 8 to inflate the inside of the two groups of support tubes 61, and under the cooperation of multiple touch sensors, multiple groups of pneumatic rollers 624 are intermittently extended from the inside to the outside. After one relative set of pneumatic rollers 624 is extended, the corresponding touch sensor receives a sensing signal, which is then transmitted to the controller. The controller controls the first motor 12 to stop working (so that the air source drive mechanism 8 stops inflating the two sets of support tubes 61, thereby preventing the outer pneumatic rollers 624 from being extended prematurely when the extended pneumatic rollers 624 have not yet wrapped around the leather), and controls the third motor to work so that the leather is wrapped around the outer side of the extended pneumatic rollers 624. Next, the controller controls the first motor 12 to work again, and repeats the above steps to intermittently introduce the leather to avoid wrinkles and uneven acid soaking in the leather.

[0076] The present application proposes a pickling method based on a pickling device for leather production and processing, comprising the following steps:

[0077] S1: First, the leather to be pickled is introduced into the pickling box 1 through the feed port 501 (the box cover 2 is opened in advance), and the leather is passed between the support roller 502 and the guide roller 503, and the entry end of the leather is pressed into the groove of the side wall of the outer cylinder 72, and then the clamping plate 73 is clamped in the groove to fix the entry end of the leather to the side wall of the outer cylinder 72; then an acid solution is added into the pickling box 1, and the acid solution includes sulfuric acid and salt. The sulfuric acid in the pickling solution can reduce the pH value of the leather, change the charge properties of the leather surface, create conditions for subsequent processing, and make the leather loose in an acidic environment;

[0078] S2: The first motor 12 is started by the controller, and the output shaft of the first motor 12 rotates to drive the bidirectional screw 81 to rotate. The rotation of the bidirectional screw 81 causes the two transmission blocks 82 to move away from each other. Under the action of the magnetic attraction between the transmission blocks 82 and the air control plate 83, the two air control plates 83 move away from each other synchronously, and the gas inside the inner cylinder 71 is squeezed into the two groups of support tubes 61 respectively. Under the action of air pressure, the two innermost groups of piston plates 623 move outward in the air cylinder 621, thereby causing the two innermost groups of annularly distributed and oppositely arranged pneumatic rollers 624 to be squeezed outward (the pneumatic rollers 624 corresponding to the touch sensor A);

[0079] When the piston plate 623 contacts the limit ring 622, the touch sensor A receives a sensing signal, and the sensing signal is sent to the controller, which controls the first motor 12 to turn off. The controller then starts the external third motor, and the output shaft of the third motor rotates to drive the transmission shaft 17 to rotate, and the two air pipes 63 are driven to rotate synchronously (clockwise) through the pulley assembly 11, and finally the two groups of support tubes 61 are moved in a circular motion, and the introduced leather is wound around the outer side of the pneumatic roller 624 extended in step S2;

[0080] S3: Repeat S2 for several times, so that the leather is wound around several groups of annularly distributed pneumatic rollers 624 in order from the inside to the outside, until the leather is wound around the outermost pneumatic roller 624, and the spacing between each circle of the leather is maintained, so that when the leather is wound into the pickling box 1, both sides can be fully contacted with the acid solution, and when soaking, both sides can be fully soaked, and the leather will not be messed up or damaged during the pickling process;

[0081] S4: When the leather in the pickling tank 1 has finished soaking, the controller controls the output shaft of the first motor 12 to rotate in the opposite direction, driving the two air control plates 83 to move closer, so that the two groups of support tubes 61 are both negatively pressurized, so that the groups of pneumatic rollers 624 are sucked into the corresponding air cylinders 621, so that the leather is loose in the pickling tank 1 after the pickling is completed;

[0082] S5: Start the second motor 13, the output shaft of the second motor 13 rotates to drive the rotating shaft 92 to rotate, so that the gear 93 is meshed with the inner gear ring 91 for transmission, and then drives the inner cylinder 71 to rotate (counterclockwise), and the leather loose in the pickling box 1 after soaking in step S4 is rolled up on the outside of the outer cylinder 72, so as to avoid wrinkles and damage to the leather during the pickling process, so that the leather can be soaked for the second time without wasting the pickling space;

[0083] S6: Repeat S2 and S5, introduce the leather that needs to be pickled again, roll it up after the pickling is completed, and continue to soak it in the acid solution after rolling it up to complete the second soaking. The soaking time is determined according to the specific situation. When the thickness of the rolled leather on the winding piece 7 is close to the side wall of the innermost air cylinder 621, stop introducing the leather and take out the leather after the pickling is completed.

[0084] The above-mentioned specific embodiments are merely preferred embodiments of the present application. Based on the technical solutions of the present application and the relevant inspirations of the above-mentioned embodiments, those skilled in the art may make various alternative improvements and combinations to the above-mentioned specific embodiments. The above-mentioned specific embodiments are merely explanations of the present application, and they are not limitations of the present application.

Claims

1. A pickling device for leather production and processing, comprising a pickling box (1), wherein a material guide (5) is provided on one side of the upper end of the pickling box (1), characterized in that: Also includes: Two sets of rotating introduction members (6) arranged inside the pickling box (1) are used for intermittently and spacedly rolling up the leather to introduce it into the pickling box (1); The rotary introduction member (6) comprises an air delivery pipe (63) penetrating and rotatably connected to the side wall of the pickling box (1); a winding member (7) is connected between the two air delivery pipes (63) via a transfer plate (10); a plurality of support pipes (61) are equidistantly connected to the sides of the two air delivery pipes (63); and a plurality of groups of winding support members (62) distributed in an annular shape are connected to the sides of the two groups of support pipes (61) close to each other; The two air delivery pipes (63) are both rotatably connected to sealing disks (14), and an air source driving mechanism (8) is provided between the two sealing disks (14) to intermittently drive a plurality of groups of annularly distributed winding support members (62) in sequence from the inside to the outside; The sealing disc (14) is provided with a winding transmission mechanism (9) for driving the winding member (7); The winding support member (62) comprises an air cylinder (621) connected to the support tube (61), a piston plate (623) being slidably connected inside the air cylinder (621), and an end of the piston plate (623) away from the support tube (61) being fixedly connected to a pneumatic roller (624); A limiting protrusion is fixedly connected to the inner wall of one end of the air cylinder (621) close to the support tube (61) for limiting the inner side of the piston plate (623); and a limiting ring (622) is fixedly connected to the inner wall of one end of the air cylinder (621) away from the support tube (61) for limiting the outer side of the pneumatic roller (624); Touch sensors are embedded in the inner walls of a plurality of limiting rings (622) corresponding to one of the support tubes (61), and the plurality of touch sensors are arranged in order from the axis of the gas transmission tube (63) outwards: touch sensor A, touch sensor B, touch sensor C; The support tube (61) is internally connected to a plurality of air guides (612) located between two adjacent winding support members (62), and an air opening valve (611) is provided on the air guide (612). The support tube (61) is fixedly connected to the air delivery pipe (63), and a through air delivery hole (613) is provided on the contact surface between the support tube (61) and the air delivery pipe (63); A bracket (16) is fixedly connected to the side wall of the pickling box (1), and a transmission shaft (17) is rotatably connected to the bracket (16). The transmission shaft (17) and two air pipes (63) are driven via a pulley assembly (11), and the transmission shaft (17) is fixedly connected to the output shaft of an external third motor.

2. The pickling device for leather production and processing according to claim 1 is characterized in that: The winding member (7) comprises an inner cylinder (71) rotatably connected between two adapter plates (10); the side wall of the inner cylinder (71) is fixedly connected to an outer cylinder (72); the side wall of the outer cylinder (72) is provided with a groove; a clamping plate (73) is clamped in the groove for fixing the end of the leather.

3. The pickling device for leather production and processing according to claim 2 is characterized in that: The air source driving mechanism (8) comprises a bidirectional screw (81) rotatably connected between two sealing disks (14); a rectangular cylinder (84) is further connected between the two sealing disks (14); and the bidirectional screw (81) is located inside the rectangular cylinder (84); The outer transmission sleeve of the bidirectional screw (81) is provided with two symmetrically arranged transmission blocks (82), and the outer sliding sleeve of the rectangular cylinder (84) is provided with two symmetrically arranged air control plates (83), the outer rings of the two air control plates (83) are in sliding contact with the inner wall of the inner cylinder (71), and the two air control plates (83) are magnetically attracted to the two transmission blocks (82) and move synchronously.

4. The pickling device for leather production and processing according to claim 3 is characterized in that: The outer walls of the pickling box (1) on opposite sides are connected to U-shaped plates (3), the inner walls of the two U-shaped plates (3) are fixedly connected to a pair of support rods (15), the two support rods (15) are respectively fixedly connected to the two sealing disks (14), and the two pairs of support rods (15) respectively play a supporting role for the two sealing disks (14).

5. The pickling device for leather production and processing according to claim 4 is characterized in that: The winding transmission mechanism (9) comprises a rotating shaft (92) penetrating the sealing disk (14) and rotatably connected to the sealing disk (14); the rotating shaft (92) extends into the inner cylinder (71); a gear (93) is fixedly sleeved on the end of the rotating shaft (92); and an inner gear ring (91) meshing with the gear (93) is fixedly connected to the inner side wall of the inner cylinder (71); A second motor (13) is mounted on the inner wall of one of the U-shaped plates (3), and an output shaft of the second motor (13) is fixedly connected to the end of the rotating shaft (92).

6. The pickling device for leather production and processing according to claim 1 is characterized in that: The material guide member (5) comprises a material feed port (501) provided on the side of the pickling box (1); the inner wall of the pickling box (1) is connected to a support roller (502); the inner wall of the pickling box (1) is also provided with a guide roller member (503) located above the support roller (502); The upper end of the pickling box (1) is rotatably connected to a box cover (2), and one side of the lower end of the pickling box (1) is connected to a drain pipe (4), and a valve is provided on the drain pipe (4).

7. The pickling device for leather production and processing according to claim 5 is characterized in that: It also includes a controller, the output end of the controller is connected to the input ends of the first motor (12), the second motor (13) and the third motor, and the output ends of the touch sensor A, the touch sensor B and the touch sensor C are electrically connected to the first motor (12) and the input end of the controller.

8. The pickling method based on the pickling device for leather production and processing according to claim 7, characterized in that: The following steps are involved: S1: firstly, the leather to be pickled is passed through the material guide (5) into the pickling box (1), the entry end of the leather is pressed into the groove of the side wall of the outer cylinder (72), and then the clamping plate (73) is clamped in the groove to fix the entry end of the leather to the side wall of the outer cylinder (72); then, an acid solution is added into the pickling box (1); S2: starting the first motor (12) to drive the air source driving mechanism (8), causing the two air control plates (83) to move away from each other for the first time, squeezing the gas inside the inner cylinder (71) to the two groups of support tubes (61) for the first time, thereby causing a group of piston plates (623) corresponding to the touch sensor A to move away from the support tubes (61) under the action of air pressure, and squeezing out a corresponding group of annularly distributed pneumatic rollers (624); When the piston plate (623) contacts the limiting ring (622), the touch sensor A receives a sensing signal, and the controller controls the first motor (12) to turn off, and then starts the external third motor to drive the two air pipes (63) to rotate through the pulley assembly (11), thereby driving the two groups of support pipes (61) to complete the first circular motion, so that the leather is wound around the outside of the first group of several pneumatic rollers (624); S3: Repeat S2 for multiple times, so that the leather is wound around a plurality of groups of annularly distributed pneumatic rollers (624) in order from the inside to the outside, until the leather is wound around the outermost pneumatic roller (624), and the distance between each winding of the leather is maintained. During the process of the leather being wound into the pickling box (1), both the front and back sides of the leather are fully in contact with the acid solution, and both sides can be fully soaked during the soaking; S4: When the leather in the pickling box (1) has completed the soaking time, the output shaft of the first motor (12) rotates in the opposite direction, driving the two air control plates (83) to move closer together, so that negative pressure is present in both sets of support tubes (61), thereby causing the plurality of sets of pneumatic rollers (624) to be sucked into the corresponding air cylinders (621), so that the leather is loosened in the pickling box (1) after the pickling is completed; S5: starting the second motor (13), thereby driving the winding transmission mechanism (9), driving the winding member (7) to rotate, and winding the soaked leather on the outside of the winding member (7); S6: Repeat S2 and S5, introduce leather that needs to be pickled again, roll it up after the pickling is completed, and continue to soak the leather in the acid solution after rolling it up for a second soaking.

Images