Automatic leather airing and hanging device

Abstract

The invention discloses an automatic leather airing and hanging device. The device comprises a support, and a leather receiving mechanism, a rod feeding mechanism, an airing and hanging frame, a lifting mechanism and a transferring mechanism are installed in the support; the leather receiving mechanism is close to the drying oven and used for receiving leather conveyed from the drying oven end. The rod conveying mechanism is used for conveying the hanging rod from the rod storage part of the rod conveying mechanism to the position between the drying oven and the skin receiving mechanism; the lifting mechanism is used for lifting the hanging rod from the bottom to the top, and meanwhile, the leather is hung; the transferring mechanism is used for receiving the hanging rods from the lifting mechanism and transferring the hanging rods to the hanging rack; the hanging rack is used for hanging the hanging rod, and the hanging rack is moved to a designated area to hang and air the leather; compared with an existing simple hanging rack, automatic hanging and airing are achieved, the hanging rack is mainly composed of the leather receiving mechanism, the rod feeding mechanism, the lifting mechanism, the transferring mechanism and the hanging rack body, the purpose of finally airing and hanging leather from taking out, moving and hanging of hanging rods is achieved, the whole process is carried out by means of all mechanical relations in a cooperative sequence, and the labor intensity of workers is lowered. And scientific and reasonable hanging is ensured.

Description

Technical Field

[0001] The present invention belongs to the technical field of leather hanging and airing, and particularly relates to an automatic leather hanging and airing device. Background Art

[0002] Leather is the animal skin that has been denatured and is not easily perishable through physical and chemical processes such as hair removal and tanning. The processing of genuine leather is very complex, and many processes are required to produce finished leather. The main processes are as follows: Preparation stage: First, soak the skin to restore its moisture and remove dirt. Then, perform hair removal / liming to dissolve the hair and epidermis with lime or chemical agents. Finally, delime to neutralize the residual alkaline substances. Tanning stage: First, tan to stabilize the collagen fibers and prevent decay. Then, neutralize to adjust the pH value and prepare for subsequent processes. Finishing stage: First, dye and fatliquor to endow color and softness. Then, dry to remove moisture and shape the leather. Finally, polish / emboss to enhance the surface texture.

[0003] Drying is a key step after leather tanning in the above process. The water content of the tanned leather is 50% - 70%, and it needs to be dried to 10% - 20% to stabilize its performance. Currently, the leather processing and finishing equipment conveys the processed animal skin to the drying area through a conveyor belt. The commonly used oven in enterprises has a certain temperature when the leather comes out of it, and it needs to dissipate heat and be hung and aired. Due to the limited space area in the enterprise factory, the leather is hung on a rod. The length and width of the leather reach 2 - 3 meters. Two operators need to lift both ends of the rod, place the rod in the middle of the animal skin, and lift it simultaneously so that the animal skin does not touch the ground to prevent contamination. Finally, it is lifted to the bracket for hanging and drying. On the one hand, the existing simple structure cannot meet the need for batch hanging and drying. On the other hand, the repeated and continuous high-intensity hanging and airing by two operators still cannot adapt to the equipment operation speed, resulting in a slower turnover speed and low work efficiency. Summary of the Invention

[0004] The purpose of the present invention is to design an automatic leather hanging and airing device, which saves labor costs on the one hand and makes the leather hanging and airing process automated, improving work efficiency on the other hand.

[0005] To achieve the above purpose, the technical solution adopted by the present invention is as follows: An automatic leather hanging and airing device, characterized in that: the device includes a bracket, and a leather receiving mechanism, a rod feeding mechanism, a hanging rack, a lifting mechanism, and a transfer mechanism are installed in the bracket; Among them, the leather receiving mechanism is close to the oven and is used to receive the leather transmitted from the oven end; The rod feeding mechanism sends the hanging rod from the rod storage part of the rod feeding mechanism to between the oven and the leather receiving mechanism; Lifting mechanism, which lifts the hanging rod from the bottom to the top and simultaneously suspends the leather; Transfer mechanism, which is used to receive the hanging rod from the lifting mechanism and transfer it to the drying rack; Drying rack, which is used for hanging the hanging rod and moves the drying rack to a specified area to hang and dry the leather.

[0006] Furthermore, the leather receiving mechanism is installed at the front end of the bracket. The leather receiving mechanism is close to the oven. The drying rack is arranged at the rear of the bracket. The rod feeding mechanism is installed at the leather receiving mechanism. The lifting mechanism is located between the oven and the leather receiving mechanism. The transfer mechanism is located at the top of the bracket.

[0007] Furthermore, the leather receiving mechanism includes a leather receiving frame and a driving motor. A driving wheel, a driven wheel and a transmission belt are installed on the leather receiving frame. A brush roller is installed near the driving wheel. Sliders and a push rod guide plate are installed at the bottom of the leather receiving frame. A placing groove is arranged at the front end of the push rod guide plate.

[0008] Furthermore, the rod feeding mechanism includes a rod feeding mechanism frame, a rod feeding part and a rod storage part. The rod storage part is specifically a hanging rod placement area, which is composed of an L-shaped baffle plate and a limiting rod connected to the bracket. A gap area is formed between the L-shaped baffle plate and the limiting rod. A triangular blocking and pushing piece is arranged at the top of the limiting rod. The top of the L-shaped baffle plate is designed as an inclined slope. Guide rails are installed on the vertical rods of the bracket at both ends of the same vertical plane as the gap area. A lifting tongue plate that can slide up and down is installed on the guide rails. The lifting tongue plate is provided with vertical up and down moving power by a chain lifting mechanism.

[0009] Furthermore, the rod feeding part includes a guiding stop rod installed at the rear of the rod feeding mechanism frame. A buffer blade is installed at the bottom of the guiding stop rod. The guiding stop rod and the L-shaped baffle plate form a hanging rod falling channel. The width of the falling channel is greater than the outer diameter of the hanging rod. An inclined guiding part is installed below the guiding stop rod. A horizontal conveying part is installed inside the rod feeding mechanism frame. The horizontal conveying part includes a driving gear, a driven gear, a chain and a conveyor belt. A dial is installed on the chain.

[0010] Furthermore, guide rails are installed at the top of the rod feeding mechanism frame. The leather receiving frame is installed on the guide rails of the rod feeding mechanism frame through sliders, and the driving of the leather receiving frame to move back and forth is realized through a cylinder.

[0011] Furthermore, the lifting mechanism adopts a chain lifting mechanism. The chain lifting mechanism is installed on the lifting mechanism frame. Guide rails are installed on the side of the lifting mechanism frame. A movable lifting block is installed on the guide rails. A pen rod type cylinder is installed at the lifting block. The lifting block moves vertically up and down along the guide rails on the side of the lifting mechanism frame.

[0012] Further, the transfer mechanism includes a moving frame, which is installed on the guide rail at the top of the bracket through a slider. The slider moves through a moving chain drive mechanism, so that the slider drives the moving frame to move along the guide rail at the top of the bracket. There are two vertical rods in the moving frame. Guide rails are provided on the sides of the vertical rods, and a carrier rod block that can move up and down is installed on the guide rails. A cylinder is installed at the carrier rod block, and a cross bridge swing rod is connected to the telescopic rod of the cylinder. The carrier rod block is also provided with a carrier rod groove.

[0013] Further, the chain lifting mechanism includes a chain lifting drive motor, which drives a horizontal rotating shaft to rotate. First gears are installed at both ends of the horizontal rotating shaft. The first gears are driven by a chain to engage with second gears on the vertical rods of the bracket. The second gears are coaxially connected to third gears, and the third gears drive the chain. A slider is installed on the chain, and a lifting tongue plate is installed on the slider.

[0014] The following beneficial effects can be obtained through the above technical solutions: Compared with the existing simple drying rack, the present invention realizes automatic hanging and drying. The present invention mainly consists of five parts: a leather connecting mechanism, a rod feeding mechanism, a lifting mechanism, a transfer mechanism, and a drying rack, so that the hanging rod is taken out, moved, and hung up, and finally the purpose of hanging and drying leather is achieved. The whole process depends entirely on the coordinated sequence of each mechanical relationship to ensure scientific and reasonable hanging and drying. Description of the Drawings

[0015] Figure 1 It is a schematic diagram of the overall leather automatic hanging and drying device.

[0016] Figure 2 It is a schematic diagram of the bracket structure.

[0017] Figure 3 It is a schematic diagram of the structures of the leather connecting mechanism and the rod feeding mechanism.

[0018] Figure 4 It is a structural diagram of the leather connecting mechanism.

[0019] Figure 5 It is a structural diagram of the rod feeding part.

[0020] Figure 6 It is a structural relationship diagram of the lifting mechanism and the transfer mechanism.

[0021] Figure 7 It is an enlarged view of the lifting mechanism and the transfer mechanism.

[0022] Figure 8 It is a schematic diagram of the rod storage part. Detailed Embodiment

[0023] The following further describes the present invention with reference to the drawings: As Figure 1As shown in the figure, an automatic leather hanging device, the device includes a bracket 1, in which a leather receiving mechanism 6, a rod feeding mechanism 3, a hanging rack 2, a lifting mechanism 4 and a transfer mechanism 5 are installed. Among them, the leather receiving mechanism is installed at the front end of the bracket. The leather receiving mechanism is close to the oven and is used to receive the leather transmitted from the oven end. The hanging rack is arranged at the rear of the bracket. The rod feeding mechanism is installed at the leather receiving mechanism to send the hanging rod from the rod storage part to between the oven and the leather receiving mechanism. The lifting mechanism is located between the oven and the leather receiving mechanism and lifts the hanging rod from the bottom to the top. The transfer mechanism is located at the top of the bracket. The transfer mechanism receives the hanging leather coming from the lifting mechanism and transfers it to the hanging rack to achieve suspension.

[0024] Among them, the bracket 1 is in a square frame structure. The front end of the bracket is a lifting mechanism frame 11. At the same time, the rear end of the bracket is divided into a hanging rack placement area and a leather receiving mechanism installation area by a vertical rod ( Figure 2 as shown in the figure) for installing the lifting mechanism. The leather receiving mechanism, the rod storage part of the rod feeding mechanism and the hanging rack are arranged in sequence at the rear end of the bracket. The rod feeding part of the rod feeding mechanism is located at the bottom of the leather receiving mechanism. A movable transfer mechanism is installed at the top of the bracket.

[0025] Figure 3 and 4 As shown in the figure, the leather receiving mechanism 6 includes a leather receiving frame 61 and a driving motor 65. A driving wheel 62 is installed in front of the leather receiving frame, and a driven wheel 63 is installed behind the leather receiving frame. A transmission belt (not shown in the attached figure) is installed between the driving wheel and the driven wheel. The driving motor drives the driving wheel to rotate, and then the transmission belt runs, which is used to receive the leather transmitted from the oven end. Among them, a brush roller 64 is installed near the driving wheel, and the brush roller 64 is also driven by the driving motor to rotate. In addition, a slider 68 and a push rod guide plate 67 are installed at the bottom of the leather receiving frame 61, and a placement groove 66 is provided at the front end of the push rod guide plate 67.

[0026] Figure 3 As shown in the figure, the rod feeding mechanism 3 includes a rod feeding mechanism frame, a rod feeding part and a rod storage part. Among them, Figure 8 As shown in the figure, the rod storage part is located behind the leather receiving mechanism. Its structure is composed of rod placement areas on the left and right sides. The hanging rods are stacked one by one. The rod placement area is composed of an L-shaped baffle 36 connected to the bracket and a limiting rod 31. The width of the gap area formed between the L-shaped baffle 36 and the limiting rod 31 is slightly larger than the outer diameter of the hanging rod. A triangular blocking push piece 32 is provided at the top of the limiting rod 31. The top of the L-shaped baffle 36 is designed as an inclined slope to facilitate and guide the falling of the push rod. Guide rails are installed on the vertical rods of the bracket at both ends of the same vertical plane as the gap area, and a lifting tongue plate 34 that can slide up and down is installed on the guide rails. The lifting tongue plate is provided with vertical up and down movement power by a chain lifting mechanism.

[0027] Specifically, the chain lifting mechanism includes a chain lifting drive motor 37. The chain lifting drive motor drives the horizontal rotating shaft 38 to rotate. First gears are installed at both ends of the horizontal rotating shaft 38. The first gears are in chain drive with second gears on the vertical rods of the bracket. The second gears are coaxially connected to third gears 33. The third gears 33 drive the chains. Sliders are installed on the chains, and lifting tongue plates 34 are installed on the sliders. With the above structure, the lifting tongue plates 34 are located at the bottoms of both ends of the first-layer hanging rods, achieving the purpose of lifting the hanging rods. When the chain lifting drive motor 37 rotates forward, the power is transmitted in sequence from the motor, the horizontal rotating shaft 38, the first gears, the second gears, and the third gears, and finally drives the chains to pull the lifting tongue plates 34 to move upward. When the hanging rods touch the triangular blocking push pieces 32, the hanging rods shift backward and fall into the rod feeding part along the inclined slopes of the L-shaped baffle plates 36.

[0028] Figure 5 As shown in the figure, the rod feeding part is installed on the rod feeding mechanism frame 311. Guide rails are installed at the top of the rod feeding mechanism frame 311. The leather connecting frame 61 is installed on the guide rails of the rod feeding mechanism frame 311 through sliders 68 and is driven by a cylinder 314 to move the leather connecting frame 61 back and forth. The rod feeding part includes a guiding stop rod 312 installed at the rear of the rod feeding mechanism frame. Buffer blades 313 are installed at the bottom of the guiding stop rod 312. The guiding stop rod 312 and the L-shaped baffle plate 36 form a hanging rod falling channel. The width of the falling channel is greater than the outer diameter of the hanging rod. An inclined guiding part 315 is installed below the guiding stop rod 312. A horizontal conveying part is installed inside the rod feeding mechanism frame 311. The horizontal conveying part includes a driving gear 317 and a driven gear. The driving gear 317 and the driven gear are connected by a chain. Paddles 316 are installed on the chain. A conveyor belt 318 is provided between the driving gear 317 and the driven gear. The hanging rods sliding down from the inclined guiding part 315 fall onto the horizontal conveying part. An upper limit stop piece 319 is installed at the front end of the horizontal conveying part.

[0029] Based on the combination of the above leather connecting mechanism 6 and rod feeding mechanism 3, at this time, the push rod guide plate 67 is located in front of and behind the side of the horizontal conveying part, and after the hanging rods fall, under the guidance of the upper limit stop piece 319, they can smoothly fall into the placement groove 66 at the front end of the push rod guide plate 67.

[0030] The lifting mechanism 4 adopts a chain lifting mechanism 44. The chain lifting mechanism is installed on the lifting mechanism frame 41. Guide rails are installed on the side of the lifting mechanism frame, and a movable lifting block 42 is installed on the guide rails. A pen-bar cylinder 43 is installed at the lifting block. The lifting block moves vertically up and down along the guide rails on the side of the lifting mechanism frame. The specific operation principle is as follows: When the hanging rod is located in the placement groove of the push rod guide plate, the lifting block falls onto both ends of the hanging rod. Then, the telescopic rods of the pen-bar cylinders on both sides extend and are inserted into the pipe rods at the ends of the hanging rod. As the chain lifting mechanism operates, the lifting block carries the hanging rod upward. Since both the hanging rod and the lifting block are located between the oven and the leather splicing mechanism, when the hanging rod moves upward, it will lift the leather between the oven and the leather splicing mechanism. The lifting block carries the hanging rod and continues to move upward to the upper part of the lifting mechanism frame. Figure 6 As shown, the hanging rod has lifted the leather and is at the upper part of the lifting mechanism frame, and the leather is completely away from the equipment below.

[0031] Figure 6 and 7 As shown, the transfer mechanism 5 includes a moving frame 51. The moving frame is installed on the guide rails at the top of the bracket through sliders. The sliders are driven by a moving chain transmission mechanism 52, so that the sliders carry the moving frame and move along the guide rails at the top of the bracket. There are two vertical rods 53 inside the moving frame. Guide rails are provided on the sides of the vertical rods, and a load-carrying rod block 54 that can move up and down is installed on the guide rails. A cylinder is installed at the load-carrying rod block, and a cross-bridge swing rod 55 is connected to the telescopic rod of the cylinder. The load-carrying rod block is also provided with a load-carrying rod groove 56; when the hanging rod that has lifted the leather is at the upper part of the lifting mechanism frame, the moving frame of the transfer mechanism moves to the front end (left end) under the operation of the moving chain transmission mechanism 52. The two cross-bridge swing rods swing to the bottom of the hanging rod under the drive of the cylinder. The two cross-bridge swing rods are used to support the hanging rod. Then, the telescopic rods of the pen-bar cylinders on both sides of the hanging rod retract, and the hanging rod falls from the lifting mechanism onto the cross-bridge swing rods of the transfer mechanism. The cross-bridge swing rods are inclined, and the hanging rod slides into the load-carrying rod groove due to gravity. The moving chain transmission mechanism 52 operates, and the sliders at the bottom of the moving frame are carried by the chain and move backward (rightward) along the guide rails to the top of the drying rack. Then, the load-carrying rod block moves downward along the guide rails, so that the hanging rod effectively contacts the drying rack. The load-carrying rod block continues to move downward, and the hanging rod disengages from the load-carrying rod groove, and the hanging rod is completely placed on the drying rack. The moving chain transmission mechanism 52 operates, driving the moving frame to move forward (leftward) a little, so that the load-carrying rod groove moves from directly below the hanging rod to the side. The chain transmission mechanism continues to drive the moving frame back to the leftmost end of the bracket to wait for the transfer of the next hanging rod.

[0032] The whole automatic leather hanging and drying process is as follows: A plurality of hanging rods are stacked one by one and placed in the gap area formed between the L-shaped baffle plate 36 and the limit rod 31, that is, the placement area. When the chain lifting drive motor 37 is running, the lifting tongue plates on both sides first lift the first layer of hanging rods, and the hanging rods are lifted to the highest point. Under the blocking of the triangular blocking push piece 32, the push rods fall into the gap channel formed by the guide gear rod 312 and the L-shaped baffle plate 36. Under the buffering of the buffer blade, the push rod falls into the inclined guide part and slides into the horizontal conveying part. Under the action of the conveyor belt and the paddle of the horizontal conveying part, the hanging rods are moved to the front end of the horizontal conveying part. , and falls into the placement groove of the push rod guide. In order to prevent the hanging rod from deviating from the moving path of the hanging rod, an upper limit baffle is installed at the front end of the horizontal conveying part, so that the hanging rod can effectively fall into the placement groove of the push rod guide. The initial position of the lifting block of the lifting mechanism is at the same horizontal position as the placement groove. When there is a hanging rod in the placement groove, the pen-shaped cylinder of the lifting block extends the telescopic rod and inserts it into the pipe rod at the end of the hanging rod, which can effectively fix the hanging rod. As the chain lifting mechanism 44 runs, the hanging rod is lifted upward. When the hanging rod moves upward, it will hang the hanging rod in the oven and the skinning machine. The leather between the structures, the lifting block carries the hanging rod to continue upward to the upper part of the lifting mechanism frame, and then the two bridge swing rods of the transfer mechanism are driven by the cylinder to make the bridge swing rod at the bottom of the hanging rod and lift the hanging rod. At this time, the pen-shaped cylinders on both sides retract the telescopic rods, and the hanging rod falls from the lifting mechanism to the bridge swing rod of the transfer mechanism. The bridge swing rod is inclined, and the hanging rod slides into the groove of the carrying rod under the action of gravity. The mobile frame is driven by the mobile chain transmission mechanism 52 to move backward (to the right) along the guide rail to move to the drying rack. The top of the hanging rod is moved downward along the guide rail, and then the rod-carrying block moves downward along the guide rail, so that the hanging rod is effectively placed on the drying rack. The rod-carrying block continues to move downward, and the hanging rod is disengaged from the rod-carrying groove. The chain transmission mechanism drives the movable rack to move forward (leftward) a little, so that the rod-carrying groove moves to the side from directly below the hanging rod. After the rod-carrying block moves upward along the guide rail to a suitable position, the chain transmission mechanism runs to return the movable rack to the leftmost end of the bracket to wait for the next hanging rod to be transferred. The process is repeated to realize automatic hanging and drying. When the drying rack is full of leather, it is pushed into the designated drying area for drying.

[0033] Based on the above embodiments, the present invention can design the hanging rod to be slightly arc-shaped, so that the hanging rod can be rotated when hanging the leather, so that the center of gravity of the leather is centered when hanging.

[0034] In the above embodiment, the skin-joining frame is installed on the guide rail of the feeding rod mechanism frame through a slider, and the cylinder is used to drive the skin-joining frame to move forward and backward. The purpose of this design is, on the one hand, to reduce the distance between the skin-joining frame and the oven to prevent the distance from being too large and the leather from slipping through the gap; on the other hand, to drive the skin-joining frame to move forward and backward, and to move the push rod guide plate forward, so that the hanging rod can be effectively sent to the appropriate acquisition position of the lifting mechanism.

[0035] In the above embodiments, there is a gap between the lifting tongue plate and the two ends of the hanging rod. Otherwise, when the lifting tongue plate falls, it is easily blocked by the two ends of the hanging rod and cannot smoothly fall below the hanging rod, and thus cannot lift the two ends of the hanging rod ( Figure 8 as shown). Therefore, the lifting tongue plate can be controlled by a rotating mechanism to achieve rotation. Its structure can be that a rotating clamping cylinder is installed on the slider, and the piston rod of the rotating clamping cylinder is installed. The rotating clamping cylinder rotates 90 degrees. That is, when the lifting tongue plate falls, the piston rod of the rotating clamping cylinder rotates outward 90 degrees, so that the lifting tongue plate moves away from the hanging rod. In this way, the lifting tongue plate can smoothly fall below the hanging rod, and then the piston rod rotates inward 90 degrees. At this time, the lifting tongue plate rotates to the bottom of the hanging rod, so as to achieve the purpose of lifting the hanging rod. In this embodiment, the rotating clamping cylinder is only used to illustrate its usage method, and other structures with rotating functions can be applied.

[0036] The above are all preferred embodiments of the present invention. For those of ordinary skill in the art of this technology, without departing from the principle of the present invention, the modifications of various equivalent forms of the present invention all fall within the protection scope of the appended claims of this application.

Claims

1. An automatic leather hanging device, characterized in that: The device comprises a bracket, in which a skin-joining mechanism, a rod-feeding mechanism, a drying rack, a lifting mechanism and a conveying mechanism are installed; The leather receiving mechanism is close to the oven and is used to receive the leather from the oven end; The rod-feeding mechanism delivers the hanging rod from the rod storage part of the rod-feeding mechanism to between the drying oven and the skin-attaching mechanism; The lifting mechanism lifts the hanging rod from the bottom to the top and hangs the leather at the same time; The transfer mechanism is used to receive the hanging rod from the lifting mechanism and transfer it to the drying rack; The drying rack is used for hanging the hanging rod. The drying rack is moved to the designated area to hang the leather.

2. The automatic leather hanging device according to claim 1, characterized in that: The skin-joining mechanism is installed at the front end of the bracket, the skin-joining mechanism is close to the oven, the drying rack is arranged at the rear of the bracket, the feeding rod mechanism is installed at the skin-joining mechanism, the lifting mechanism is located between the oven and the skin-joining mechanism, and the transfer mechanism is located at the top of the bracket.

3. The automatic leather hanging device according to claim 1 or 2, characterized in that: The skin-joining mechanism comprises a skin-joining frame and a driving motor. A driving wheel, a driven wheel and a transmission belt are installed on the skin-joining frame. A brush roller is installed near the driving wheel. A slider and a push rod guide plate are installed at the bottom of the skin-joining frame. A placement groove is provided at the front end of the push rod guide plate.

4. The automatic leather drying device according to claim 1 or 2, characterized in that: The rod feeding mechanism includes a rod feeding mechanism frame, a rod feeding part and a rod storage part. The rod storage part is specifically a hanging rod placement area, including an L-shaped baffle and a limit rod connected to the bracket. The gap area is formed between the L-shaped baffle and the limit rod. The top of the limit rod is provided with a triangular blocking push plate. The top of the L-shaped baffle is designed to be an inclined slope. Guide rails are installed on the bracket uprights at both ends of the same vertical plane as the gap area. A lifting tongue plate that can slide up and down is installed on the guide rail. The lifting tongue plate provides vertical movement power up and down through a chain lifting mechanism.

5. The automatic leather hanging device according to claim 4, characterized in that: The feeding rod part includes a guiding lever installed at the rear of the feeding rod mechanism frame, a buffer blade is installed at the bottom of the guiding lever, the guiding lever and the L-shaped baffle form a hanging rod falling channel, the width of the falling channel is greater than the outer diameter of the hanging rod, and an inclined guiding part is installed below the guiding lever; a horizontal conveying part is installed in the feeding rod mechanism frame, the horizontal conveying part includes a driving gear, a driven gear, a chain and a conveyor belt, and a paddle is installed on the chain.

6. The automatic leather hanging device according to claim 5, characterized in that: A guide rail is installed on the top of the rod feeding mechanism frame, and the skin receiving frame is installed on the guide rail of the rod feeding mechanism frame through a slider, and the skin receiving frame is driven to move forward and backward through a cylinder.

7. The automatic leather hanging device according to claim 1 or 2, characterized in that: The lifting mechanism adopts a chain lifting mechanism, which is installed on the lifting mechanism frame. A guide rail is installed on the side of the lifting mechanism frame. A movable lifting block is installed on the guide rail. A pen-shaped cylinder is installed at the lifting block. The lifting block moves vertically up and down along the side guide rail of the lifting mechanism frame.

8. The automatic leather hanging device according to claim 1 or 2, characterized in that: The transfer mechanism includes a mobile frame, which is installed on the guide rail at the top of the bracket through a slider. The slider is moved by a mobile chain transmission mechanism, so that the slider carries the mobile frame to move along the guide rail on the top of the bracket. Two vertical poles are provided in the mobile frame, and guide rails are provided on the sides of the vertical poles. A rod-carrying block that can move up and down is installed on the guide rail. A cylinder is installed at the rod-carrying block, and the telescopic rod of the cylinder is connected to the bridge swing arm. The rod-carrying block is also provided with a rod-carrying groove.

9. The automatic leather drying device according to claim 4, characterized in that: The chain lifting mechanism includes a chain lifting drive motor, which drives the horizontal rotating shaft to rotate. The first gear is installed at both ends of the horizontal rotating shaft. The first gear and the second gear on the bracket vertical rod are transmitted through a chain. The second gear is coaxially connected to the third gear. The third gear drives the chain. A slider is installed on the chain, and a lifting tongue plate is installed on the slider.

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