Leather drying device

Abstract

The utility model discloses a kind of leather drying device, including drying cabinet and the fixed frame being set in drying cabinet, the fixed frame is symmetrically slidably arranged with slide on left and right, the top and bottom of the slide are sequentially fixed with multiple groups of placing plate along front-back direction, and the upper placing plate is threadedly connected with fixed bolt by first nut, the bottom end of each group of fixed bolt is rotatably equipped with the pressing plate that bottom is attached on the lower placing plate, auxiliary assembly for assisting leather drying is arranged in the drying cabinet, the utility model can make leather self-rotate when drying, accelerate the gas flow rate in drying cabinet, so that hot air can be evenly spread in drying cabinet, improve the drying effect of leather, avoid uneven distribution of hot air, easily affect drying uniformity, and when leather self-rotate, hot air is synchronously reciprocated on both sides to facilitate the better contact of hot air and leather surface, avoid drying dead angle.

Description

Technical Field

[0001] This utility model relates to the field of leather processing, and in particular to a leather drying device. Background Technology

[0002] Leather is animal hide that has undergone physical and chemical processing such as hair removal and tanning, resulting in a modified appearance that is less prone to decay. Leather is composed of natural protein fibers tightly woven in three-dimensional space, and its surface has a special grain layer with natural grain and luster, providing a comfortable feel. When processing leather, it is necessary to use a drying device to dry it. However, traditional leather drying devices have poor drying effects. Most of them simply place the leather directly in the drying box, which cannot dry the leather repeatedly without dead angles, greatly reducing drying efficiency. Furthermore, it is necessary to extend the drying time to dry the leather completely. Excessive drying time can easily damage the leather and increase the defect rate.

[0003] To address the aforementioned problems, this utility model provides improvements. Summary of the Invention

[0004] This invention proposes a leather drying device that solves the aforementioned problems existing in the use of existing technologies.

[0005] The technical solution of this utility model is implemented as follows: A leather drying device includes a drying chamber and a fixed frame disposed inside the drying chamber. Slides are symmetrically slidably arranged on the fixed frame. Multiple sets of placement plates are sequentially fixed to the top and bottom of the slides along the front-to-back direction. A fixing bolt is threaded onto the upper placement plate via a first nut. A pressure plate, with its bottom end fitting against the lower placement plate, is rotatably mounted at the bottom end of each set of fixing bolts. A fastening bolt, with one end fitting against the fixed frame, is threaded onto the front and back of each set of slides via a second nut. A heater is fixed to the bottom right side of the drying chamber. An air pump is fixed to the heater, with the air pump's inlet connected to the heater's outlet. The air pump's outlet is connected to a main pipe. Connecting frames are symmetrically connected to the main pipe. Multiple ends of each connecting frame, away from the main pipe, are connected to the drying chamber. An auxiliary component for assisting in the drying of leather is disposed inside the drying chamber.

[0006] The leather drying device described above further includes the following auxiliary components: A motor is fixed to the left side of the drying chamber via a bracket; a fixed shaft with one end fixed to the motor output shaft is rotatably mounted on the left side of the drying chamber; the other end of the fixed shaft is fixed to a fixed frame; movable frames are slidably mounted on both the top and bottom sides of the fixed frame; reinforcing pipes are fixed to the outer sides of the two sets of movable frames that are close to each other; multiple sets of auxiliary spray pipes are sequentially connected to the side of the reinforcing pipes that are close to each other along the left-right direction; and a motor is rotatably mounted on the right side of the drying chamber. A vent pipe is fixed to the right side of the fixed frame at one end. One end of the vent pipe is rotatably mounted on the main pipe. A branch pipe fixed to the right side of the fixed frame is connected to the left side of the vent pipe. The top and bottom of the branch pipe are connected to L-shaped guide pipes. The end of the L-shaped guide pipe away from the branch pipe is connected to the reinforcing pipe. A side frame is fixed to the left side of the fixed frame. A crankshaft with one end inserted into the movable frame is symmetrically mounted on one side of the side frame. A gear is fixed to the other end of the crankshaft. An annular toothed plate that meshes with the gear is provided on the left side of the drying oven.

[0007] The leather drying device described above is further characterized by the following: each of the auxiliary nozzles is equipped with a one-way valve.

[0008] The leather drying device described above further includes: limiting grooves on both sides of the top and bottom of the fixed frame, and limiting sliders that are fixed to the movable frame are slidably arranged in the limiting grooves.

[0009] The leather drying device described above further includes: the bent end of the L-shaped guide tube near the reinforcing tube has a telescopic tube structure; and a support frame with one end fixed to the vertical end of the L-shaped guide tube is fixed on the right side of the top and bottom front of the fixing frame.

[0010] The leather drying device described above is further characterized in that: the fixed shaft, the air pipe and the annular toothed plate are all located on the same transverse axis, and there is a gap between both ends of the reinforcing pipe and both sides of the drying box.

[0011] The present invention provides a leather drying device as described above, further comprising: an annular groove on the left side of the inner cavity of the drying chamber for use with an annular toothed plate and a gear, wherein the annular toothed plate is fixed in the annular groove.

[0012] In summary, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model, by setting auxiliary components, enables the leather to rotate during drying, thereby accelerating the gas flow rate within the drying chamber. This allows the hot air to diffuse evenly within the chamber, improving the drying effect and preventing uneven heat distribution that could affect drying uniformity. Furthermore, as the leather rotates, hot air is simultaneously sprayed back and forth on both sides, ensuring better contact between the hot air and the leather surface and preventing drying dead zones. This multi-angle and multi-form drying method ensures thorough drying without dead zones, accelerating drying efficiency, improving the drying effect, and preventing excessively long drying times that could damage the leather and increase the defect rate.

[0014] 2. By setting a one-way valve, this utility model can control the gas flow rate in the auxiliary nozzle and prevent water on the leather from directly entering the reinforcing pipe through the auxiliary nozzle, thus improving the drying effect on the leather. Even if water enters the auxiliary nozzle, it can be quickly thrown out under the action of rotational force.

[0015] 3. By setting a limiting groove and a limiting slider, this utility model can limit the sliding of the moving frame and restrict its movement range, thus preventing the moving frame from detaching from the fixed frame.

[0016] 4. By setting an L-shaped guide tube with a telescopic tube structure at the bent end, this utility model can effectively avoid interfering with the normal movement of the moving frame. In addition, the design of the support frame can reinforce the L-shaped guide tube, improve the overall stability of the L-shaped guide tube, and prevent the L-shaped guide tube from being easily broken by external force.

[0017] 5. By limiting the same transverse axis, this utility model allows the reinforcing tube to rotate synchronously when the motor drives the fixed shaft to rotate, and the gear can rotate stably on the ring tooth plate, which improves the stability of the device during operation. In addition, the spacing design avoids the reinforcing tube from contacting the side wall of the drying box and interfering with the normal movement of the reinforcing tube.

[0018] 6. By setting an annular groove, this utility model can provide an installation position for the annular toothed plate, thus avoiding interference with the normal rotation of the fixed frame. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 for Figure 1 Enlarged view of the structure at point A in the middle;

[0022] Figure 3 This is a partial side view of the structure of this utility model;

[0023] Figure 4 This is a partial perspective view of the structure of this utility model.

[0024] In the diagram: 1. Drying oven; 2. Fixed shaft; 3. Fixed frame; 4. Slide; 5. Fixing bolt; 6. Pressure plate; 7. Fastening bolt; 8. Heater; 9. Air pump; 10. Main pipe; 11. Connecting frame; 12. Vent pipe; 13. Moving frame; 14. Reinforcing pipe; 15. Auxiliary nozzle; 16. Branch pipe; 17. L-shaped guide pipe; 18. Annular groove; 19. Side frame; 20. Crankshaft; 21. Gear; 22. Annular toothed plate; 23. Limiting slider; 24. Limiting groove; 25. Motor. Detailed Implementation

[0025] The following will refer to the appendix in the embodiments of this utility model. Figure 1-4 The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model. Example

[0026] A leather drying device includes a drying chamber 1 and a fixed frame 3 set inside the drying chamber 1. Slides 4 are symmetrically slidably arranged on the fixed frame 3. A controller is set on the left side of the drying chamber 1. Exhaust pipes are connected to the top of both sides of the drying chamber 1, and auxiliary solenoid valves are set on the exhaust pipes to release pressure in the drying chamber 1 in time. Multiple sets of placement plates are fixed in sequence along the front and back direction at the top and bottom of the slides 4, and fixing bolts 5 are threadedly connected to the upper placement plate by a first nut. The bottom end of each set of fixing bolts 5 is rotatably mounted with a pressure plate 6 that is attached to the lower placement plate. The front and back of each set of slides 4 are threadedly connected by a fastening bolt 7 that is attached to the fixed frame 3 by a second nut. Using the fixing bolts 5 and fastening bolts 7, the leather can be quickly positioned according to its size.

[0027] A heater 8 is fixed to the bottom right side of the drying chamber 1. An air pump 9 is fixed to the heater 8, and the air inlet of the air pump 9 is connected to the air outlet of the heater 8. The air outlet of the air pump 9 is connected to a main pipe 10. Connecting frames 11 are symmetrically connected to the main pipe 10. Multiple ends of each connecting frame 11 away from the main pipe 10 are connected to the drying chamber 1. An auxiliary component for auxiliary drying of leather is provided inside the drying chamber 1. The auxiliary component includes a motor 25 fixed to the left side of the drying chamber 1 by a bracket. A fixed shaft 2 is rotatably mounted on the left side of the drying chamber 1, with one end fixed to the output shaft of the motor 25. The other end of the fixed shaft 2 is fixed to a fixed frame 3. Movable frames 13 are slidably arranged on both sides of the top and bottom of the fixed frame 3. Reinforcing pipes are fixed to the outer sides of the two sets of movable frames 13 that are close to each other. 14. Multiple sets of auxiliary spray pipes 15 are connected to the side of the reinforcing pipes 14 that are close to each other in the left and right direction. A ventilation pipe 12 with one end fixed to the right side of the fixed frame 3 is rotatably installed on the right side of the drying box 1. One end of the ventilation pipe 12 is rotatably installed on the main pipe 10. A branch pipe 16 fixed to the right side of the fixed frame 3 is connected to the left side of the front of the ventilation pipe 12. L-shaped guide pipes 17 are connected to the top and bottom of the branch pipe 16. The end of the L-shaped guide pipe 17 away from the branch pipe 16 is connected to the reinforcing pipe 14. A side frame 19 is fixed to the left side of the fixed frame 3. A crankshaft 20 with one end inserted into the movable frame 13 is rotatably installed on one side of the side frame 19. A gear 21 is fixed to the other end of the crankshaft 20. An annular toothed plate 22 that meshes with the gear 21 is provided on the left side of the drying box 1.

[0028] Specifically, this invention, by setting auxiliary components, utilizes a motor 25 to drive the leather to rotate, thereby accelerating the gas flow rate within the drying chamber 1 through the leather's rotation. This allows the hot air to diffuse evenly within the drying chamber 1, improving the uniformity of drying the leather. Furthermore, by utilizing the meshing of gear 21 and annular toothed plate 22, in conjunction with crankshaft 20 and moving frame 13, the reinforcing pipe 14 and auxiliary spray pipe 15 can be driven to synchronously and reciprocally spray hot air onto both sides of the leather, avoiding drying dead zones. At this time, a multi-angle and multi-form drying method is adopted to dry the leather without dead zones, which can accelerate the drying efficiency of the leather, improve the drying effect of the leather, and avoid excessively long drying time, which can easily damage the leather and increase the defect rate.

[0029] Each auxiliary nozzle 15 is equipped with a one-way valve.

[0030] Specifically, the one-way valve design can control the gas flow rate in the auxiliary nozzle 15, preventing water on the leather from directly entering the reinforcing tube 14 through the auxiliary nozzle 15 and affecting the normal use of the auxiliary nozzle 15. Even if water enters the auxiliary nozzle 15, it can be quickly flung out under the action of rotational force.

[0031] Limiting grooves 24 are provided on both sides of the top and bottom of the fixed frame 3, and limiting sliders 23 that are fixed to the movable frame 13 are slidably arranged in the limiting grooves 24.

[0032] Specifically, by utilizing the sliding connection between the limiting groove 24 and the limiting slider 23, the movable frame 13 can be slidably limited to prevent it from easily detaching from the fixed frame 3 and affecting its normal use.

[0033] The L-shaped guide tube 17 has a telescopic tube structure at the bend end near the reinforcing tube 14. The top and bottom right sides of the fixed frame 3 are each fixed with a support frame that is fixed at one end to the vertical end of the L-shaped guide tube 17.

[0034] Specifically, the L-shaped guide tube 17 with a telescopic tube structure at the bent end can effectively avoid interfering with the normal movement of the moving frame 13. At the same time, the support frame can be used to reinforce the L-shaped guide tube 17, preventing it from being easily broken by external force.

[0035] The fixed shaft 2, the air pipe 12 and the annular toothed plate 22 are all on the same transverse axis, and there is a gap between the two ends of the reinforcing pipe 14 and the two sides of the drying box 1.

[0036] Specifically, the limitation of the same horizontal axis allows the reinforcing tube 14 to rotate synchronously when the motor 25 drives the fixed shaft 2 to rotate, and the gear 21 to rotate stably on the annular toothed plate 22, which improves the stability of the device during operation. At the same time, the spacing design can effectively prevent the reinforcing tube 14 from contacting the side wall of the drying box 1 and interfering with the normal movement of the reinforcing tube 14.

[0037] An annular groove 18 is provided on the left side of the inner cavity of the drying oven 1 to cooperate with the annular toothed plate 22 and the gear 21. The annular toothed plate 22 is fixed in the annular groove 18.

[0038] Specifically, the design of the annular groove 18 is to provide sufficient mounting space for the annular toothed plate 22 and avoid affecting the normal rotation of the fixed frame 3.

[0039] The specific usage process is as follows: The user places the leather on the lower placement plate and connects the fixing bolt 5 to the threaded first nut, causing the pressure plate 6 to move down and press and position the leather on both sides. The user then pulls the slide 4 outwards until the leather is stretched to a suitable tension. Next, the user rotates the fastening bolt 7, which engages with the threaded second nut, to compress the fixing frame 3, thereby positioning the slide 4 and thus the leather. The user then activates the heater 8 and air pump 9 via the controller. The air pump 9 then transmits the heat generated by the heater 8 through the main pipe 10 to the connecting frame 11 and the ventilation pipe 12, injecting hot air into the drying chamber 1, raising its internal temperature, and drying the leather. The controller synchronously starts the motor 25, which drives the fixed shaft 2 to rotate, thereby driving the fixed frame 3 and the leather to rotate synchronously. This accelerates the gas flow rate inside the drying chamber 1, allowing the hot air to diffuse evenly within the chamber and effectively dry the leather. The hot air in the vent pipe 12 is transported to the reinforcing pipe 14 via the branch pipe 16 and the L-shaped guide pipe 17, and then sprayed out through the auxiliary nozzle 15, directly spraying hot air onto the surface of the leather. As the fixed frame 3 rotates, it drives the gear 21 to rotate synchronously. Simultaneously, the meshing of the gear 21 and the ring toothed plate 22 drives the crankshaft 20 to rotate rapidly. With the assistance of the moving frame 13, this drives the reinforcing pipe 14 and its auxiliary nozzle 15 to reciprocate, thus simultaneously drying both sides of the leather. The reciprocating spraying of hot air ensures better contact between the hot air and the leather surface, avoiding drying dead zones. This invention incorporates auxiliary components, including a motor 25 that drives the leather to rotate. This rotation accelerates the gas flow within the drying chamber 1, allowing the hot air to diffuse evenly and improving the uniformity of drying. Furthermore, the meshing of gears 21 and annular toothed plates 22, along with the crankshaft 20 and moving frame 13, drives the reinforcing pipe 14 and auxiliary spray pipe 15 to simultaneously spray hot air onto both sides of the leather, preventing drying dead zones. This multi-angle and multi-form drying method ensures thorough drying without dead zones, accelerating the drying process, improving the drying effect, and preventing excessively long drying times that could damage the leather. The design of the one-way valve can control the gas flow rate in the auxiliary nozzle 15, preventing water on the leather from directly entering the reinforcing pipe 14 through the auxiliary nozzle 15, thus affecting the normal use of the auxiliary nozzle 15. Even if water enters the auxiliary nozzle 15, it can be quickly thrown out under the action of rotational force. The sliding connection of the limiting groove 24 and the limiting slider 23 can slide and limit the moving frame 13, preventing the moving frame 13 from easily detaching from the fixed frame 3, thus affecting the normal use of the moving frame 13. The L-shaped guide pipe 17 with a telescopic tube structure at the bent end can effectively avoid interfering with the normal movement of the moving frame 13. At the same time, the support frame can reinforce the L-shaped guide pipe 17, preventing it from easily breaking due to external pulling.The limitation of the same transverse axis ensures that when the motor 25 drives the fixed shaft 2 to rotate, the reinforcing tube 14 can rotate synchronously, and the gear 21 can rotate stably on the annular toothed plate 22, improving the stability of the device during operation. Simultaneously, the spacing design effectively prevents the reinforcing tube 14 from contacting the side wall of the drying chamber 1, thus avoiding interference with its normal movement. The design of the annular groove 18 provides sufficient mounting space for the annular toothed plate 22, preventing any impact on the normal rotation of the fixed frame 3.

[0040] It should be noted that the functions to be achieved by each hardware component in this utility model are supported by a large number of mature technologies and belong to the prior art. The essence of this utility model is to optimize and combine existing hardware and its connection methods for specific application scenarios to meet the adaptation requirements of specific application scenarios and solve the problems raised in the background technology (without involving improvements to the internal software of the hardware).

[0041] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A leather drying device, comprising a drying chamber (1) and a fixed frame (3) disposed within the drying chamber (1), wherein a slide (4) is symmetrically slidably disposed on the fixed frame (3), and multiple sets of placement plates are sequentially fixed at the top and bottom of the slide (4) in the front-back direction, and a fixing bolt (5) is threadedly connected to the upper placement plate by a first nut, and a pressure plate (6) with its bottom end attached to the lower placement plate is rotatably mounted at the bottom end of each set of fixing bolts (5), and a fastening bolt (7) with one end attached to the fixed frame (3) is threadedly connected to the front and back of each set of slides (4) by a second nut, characterized in that: A heater (8) is fixed at the bottom right side of the drying box (1). An air pump (9) is fixed on the heater (8) and the air inlet of the air pump (9) is connected to the air outlet of the heater (8). The air outlet of the air pump (9) is connected to a main pipe (10). A connecting frame (11) is symmetrically connected to the main pipe (10). Multiple ends of each connecting frame (11) away from the main pipe (10) are connected to the drying box (1). An auxiliary component for drying the leather is provided inside the drying box (1).

2. The leather drying apparatus according to claim 1, characterized in that: The auxiliary components include a motor (25) fixed to the left side of the drying chamber (1) by a bracket. A fixed shaft (2) with one end fixed to the output shaft of the motor (25) is rotatably mounted on the left side of the drying chamber (1). The other end of the fixed shaft (2) is fixed to a fixed frame (3). Movable frames (13) are slidably mounted on both sides of the top and bottom of the fixed frame (3). Reinforcing pipes (14) are fixed to the outer sides of the two sets of moving frames (13) that are close to each other. Multiple sets of auxiliary nozzles (15) are connected sequentially along the left and right directions on the side of the reinforcing pipes (14) that are close to each other. An air pipe (12) with one end fixed to the right side of the fixed frame (3) is rotatably mounted on the right side of the drying chamber (1). One end of the vent pipe (12) is rotatably mounted on the main pipe (10). The left side of the front of the vent pipe (12) is connected to a branch pipe (16) fixed on the right side of the fixed frame (3). The top and bottom of the branch pipe (16) are connected to L-shaped guide pipes (17). The end of the L-shaped guide pipe (17) away from the branch pipe (16) is connected to the reinforcing pipe (14). The left side of the fixed frame (3) is fixed with a side frame (19). One side of the side frame (19) is symmetrically mounted with a crankshaft (20) inserted into the movable frame (13). The other end of the crankshaft (20) is fixed with a gear (21). The left side of the drying box (1) is provided with an annular toothed plate (22) that meshes with the gear (21).

3. The leather drying apparatus according to claim 2, characterized in that: Each auxiliary nozzle (15) is equipped with a one-way valve.

4. A leather drying apparatus according to claim 2, characterized in that: The fixed frame (3) has limit grooves (24) on both sides of the top and bottom. Limit sliders (23) that are fixed to the moving frame (13) are slidably arranged in the limit grooves (24).

5. A leather drying apparatus according to claim 2, characterized in that: The L-shaped guide tube (17) has a telescopic tube structure at the bend end near the reinforcing tube (14). The top and bottom right sides of the fixed frame (3) are each fixed with a support frame that is fixed at one end to the vertical end of the L-shaped guide tube (17).

6. A leather drying apparatus according to claim 2, characterized in that: The fixed shaft (2), the air pipe (12) and the annular toothed plate (22) are all on the same transverse axis, and there is a gap between the two ends of the reinforcing pipe (14) and the two sides of the drying box (1).

7. A leather drying apparatus according to claim 2, characterized in that: The left side of the inner cavity of the drying box (1) is provided with an annular groove (18) for use with the annular toothed plate (22) and the gear (21), and the annular toothed plate (22) is fixed in the annular groove (18).

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