A leather vacuum drying apparatus

Abstract

This application relates to a vacuum drying device for leather, belonging to the field of leather drying technology. The vacuum drying device includes a body, on which heat exchangers, several drying plates, and several sealing covers are disposed. Each sealing cover is disposed at the bottom of a corresponding drying plate. Each drying plate has a heating chamber within it and is slidably connected to the body. Several heat exchangers are arranged, each corresponding to one of the drying plates. Each heat exchanger has an inlet pipe and an outlet pipe, one end of which communicates with the corresponding heating chamber, and the other end of which communicates with the corresponding heat exchanger. This application improves the overall drying efficiency of leather.

Description

Technical Field

[0001] This application relates to the field of leather drying technology, and in particular to a leather vacuum drying device. Background Technology

[0002] Leather, an animal hide that has undergone physical and chemical processing such as hair removal and tanning to become less prone to decay, is widely used in clothing, furniture, and automotive interiors. In leather tanning, after wet processing, an evaporation drying method is typically used to convert the moisture or solvents within the leather into steam, which is then expelled, thereby reducing the leather's moisture content.

[0003] A leather drying device exists in the prior art, comprising drying plates and a heat exchanger. Several drying plates are provided, each with a heating chamber. Each drying plate has an inlet pipe and an outlet pipe, one end of which connects to the heating chamber within the corresponding drying plate, and the other end connects to the heat exchanger. The heat exchanger heats the liquid within its own chamber and then introduces it into each inlet pipe. A sealed cover is provided at the top of each drying plate, and the leather is placed in the chamber between the sealed cover and the corresponding drying plate. In operation, the heat exchanger introduces heated liquid through the inlet pipe into the heating chamber of each drying plate, thereby raising the temperature of the top wall of the drying plate through heat exchange. Then, the sealed cover is opened, the leather is placed on the top wall of the drying plate, and the sealed cover is closed again. Subsequently, the drying plate heats the leather through heat transfer, causing the moisture or solvent within the leather to turn into steam, thus drying the leather.

[0004] Regarding the aforementioned technologies, since the sealing cover on the corresponding drying plate needs to be opened during the process of placing the leather onto the top wall of the drying plate, the heat transfer effect between the corresponding drying plate and the outside environment will be intensified after the sealing cover is opened. This will easily lead to changes in the water circulation state between the heat exchanger and the drying plate, which in turn will easily cause the temperature of the liquid in the water inlet pipe of the heat exchanger to drop, resulting in a decrease in the temperature in the chamber between the other drying plates and the corresponding sealing cover. This reduces the overall drying efficiency of the leather and therefore needs to be improved. Summary of the Invention

[0005] To improve the overall drying efficiency of leather, this application provides a leather vacuum drying device.

[0006] This application provides a vacuum drying device for leather, which adopts the following technical solution: A leather vacuum drying device includes a body, on which heat exchangers, several drying plates, and several sealing covers are arranged. The sealing covers are disposed at the bottom of the corresponding drying plates. Each drying plate has a heating chamber. Each drying plate is slidably connected to the body. The number of heat exchangers is set to several and is arranged one-to-one with the drying plates. Each heat exchanger is provided with an inlet pipe and an outlet pipe. One end of the inlet pipe and the outlet pipe are connected to the corresponding heating chamber, and the other end is connected to the corresponding heat exchanger.

[0007] By adopting the above technical solution, compared with the prior art which uses only a single heat exchanger to supply water to each drying plate, resulting in mutual interference between drying plates and a decrease in the drying efficiency of the leather on the remaining drying plates when the sealing cover is opened, this application sets up multiple heat exchangers, with each heat exchanger corresponding to a drying plate. This ensures that the hot water in the heating chamber of each dryer is transported through a separate heat exchanger, thereby reducing the probability of mutual interference between drying plates through heat exchangers and reducing the probability of a decrease in the temperature inside the chamber between the remaining drying plates and the sealing cover when the sealing cover is opened. This effectively improves the overall drying efficiency of the leather in this application, while also facilitating precise control of the temperature inside the chamber between the drying plates and the sealing cover, effectively ensuring the drying efficiency of the leather in this application.

[0008] Preferably, each of the drying plates is provided with a feeding plate on its top wall, each feeding plate is slidably connected to the corresponding drying plate, and the sliding path extends beyond the corresponding drying plate. The top wall of each feeding plate is used to place leather.

[0009] By adopting the above technical solution and setting the feeding plate, after the leather drying is completed, the drying plate is separated from the other drying plates. Relevant personnel can remove the feeding plate on the drying plate using relevant equipment to replace the leather on the drying plate. This facilitates the operation of relevant personnel, replaces the step of manually replacing leather, and replaces the method of manually contacting leather and drying plate, thus ensuring the personal safety of relevant personnel.

[0010] Preferably, the machine body is also provided with a material changing mechanism, which includes a vertical frame, a docking frame, a moving component, and a docking component. The docking frame is slidably connected to the vertical frame, and the feeding plate at the same height is located on the displacement path of the docking frame. The moving component is used to drive the docking frame to slide, and the docking component is used to fix the docking frame and the corresponding feeding plate when the docking frame is close to the corresponding feeding plate.

[0011] By adopting the above technical solution and configuring the material changing mechanism, the moving component can drive the docking frame to approach the drying plate at the corresponding height. When the docking frame approaches the placement rack on the corresponding drying plate, the docking component can fix the docking frame to the corresponding feeding plate. Thus, when the moving component drives the docking frame to slide, the docking frame can drive the feeding plate to slide together and move out of the drying plate, thereby realizing the removal of the dried leather. After the leather on the stand is replaced by the subsequent replacement equipment, the moving component can place the feeding plate with the replaced leather back on the corresponding drying plate, thus facilitating the fixed-point replacement of leather by the replacement equipment.

[0012] Preferably, the docking frame is provided with a protruding frame, the end of which is inserted into the corresponding feeding plate. The docking assembly includes a locking frame and an unlocking component. One end of the locking frame is located inside the protruding frame and is slidably connected to the protruding frame. The other end of the locking frame extends out of the protruding part and is inserted into the corresponding feeding plate. The unlocking component is used to drive the locking frame to slide.

[0013] By adopting the above technical solution, the protruding frame and the docking assembly are configured such that when the protruding frame is inserted into the corresponding feeding plate after it moves with the docking frame, the other end of the protruding frame can be automatically inserted into the corresponding feeding plate, thereby locking the protruding frame and the feeding plate together. This allows the protruding frame to drive the feeding plate to slide together, thus driving the feeding plate and effectively facilitating the operation of relevant personnel.

[0014] Preferably, the protruding frame is slidably connected to the docking frame, and the sliding direction is the same as that of the docking frame. The unlocking component includes an unlocking frame and a connecting frame. The unlocking frame is slidably connected to the protruding frame. One end of the connecting frame is slidably connected to the unlocking frame, and the other end is slidably connected to the locking frame. The docking frame is also provided with a linkage component at one end near the protruding frame. The docking frame drives the unlocking frame to slide through the linkage component.

[0015] By adopting the above technical solution and setting the unlocking component, when the protruding frame moves the feeding plate back to the corresponding drying plate, the docking frame can move relative to the protruding frame as the docking frame continues to slide. This allows the linkage component to drive the unlocking frame to slide, thereby causing the unlocking frame to gradually retract into the protruding frame, thus releasing the state of being inserted into the feeding plate and realizing the unlocking between the protruding frame and the feeding plate. This allows the protruding frame to smoothly detach from the feeding plate, effectively facilitating the operation of relevant personnel.

[0016] Preferably, the docking frame is further provided with a driving mechanism, which includes a driving frame, a reset component, and an unlocking component. The driving frame is slidably connected to the docking frame, and the sliding direction is perpendicular to the sliding direction of the protruding frame. One end of the driving frame extends out of the docking frame, and the unlocking frame is located on the displacement path of the driving frame as it slides with the docking frame. The reset component is used to return the driving frame to its initial position, and the unlocking component is used to drive the driving frame to slide when the driving frame is displaced to the end of the unlocking frame away from the docking frame.

[0017] By adopting the above technical solution and configuring the driving mechanism, when the protruding frame slides relative to the docking frame, the driving frame can gradually move to the side of the unlocking frame away from the docking frame, so that the driving frame and the unlocking frame abut against each other, allowing the driving frame to push the unlocking frame to move together, thereby allowing the docking frame to drive the protruding frame to slide together, causing the protruding frame to gradually detach from the feeding plate, and then allowing the docking frame to drive the protruding frame to return to its initial position. Thus, no additional driving mechanism is needed, which effectively facilitates the operation of relevant personnel.

[0018] Preferably, the unlocking component includes a linkage frame, a drive frame, and an abutment frame. The middle part of the linkage frame is rotatably connected to the docking frame. Both ends of the linkage frame are provided with linkage grooves. One end of the drive frame and one end of the drive frame are located in the linkage grooves and abut against the inner wall of the linkage grooves. The drive frame is slidably connected to the docking frame. The abutment frame is connected to the upright frame, and the abutment frame is located on the displacement path of the drive frame as the docking frame moves.

[0019] By adopting the above technical solution and specifically setting the unlocking component, after the docking frame drives the protruding frame that has separated from the feeding plate to return to its initial position, the driving frame can abut against the abutting frame, thereby causing the abutting frame to move. This causes the abutting frame to drive the linkage frame to move, which in turn causes the linkage frame to rotate. This causes the linkage frame to drive the driving frame to slide, thereby releasing the locking of the unlocking frame. This effectively realizes the automatic unlocking of the unlocking frame by the driving frame and effectively facilitates the operation of relevant personnel.

[0020] Preferably, the linkage assembly includes a redirecting gear and two linkage racks, one of which is connected to the unlocking frame and the other is connected to the protruding frame. The redirecting gear is located between the two linkage racks and meshes with both linkage racks.

[0021] By adopting the above technical solution and specifically configuring the linkage components, when the docking frame slides relative to the protruding frame, the docking frame can drive one of its linkage racks to slide, which in turn can drive another linkage rack to slide through the linkage gear, thereby causing the unlocking frame to slide, which in turn causes the locking frame to slide, thus realizing the linkage between the docking frame and the locking frame, enabling the locking frame to unlock automatically and effectively facilitating the operation of relevant personnel.

[0022] Preferably, the material changing mechanism further includes a lifting frame and a lifting assembly. The lifting frame is slidably connected to the upright frame, and the sliding direction is the height direction of the upright frame. The docking frame is disposed on the lifting frame and slidably connected to the lifting frame. The lifting assembly is used to drive the lifting frame to slide.

[0023] By adopting the above technical solution, the lifting frame and lifting components are configured so that the lifting components can drive the lifting frame to slide in the height direction, thereby enabling the lifting frame to move to different heights to adapt to drying plates of different heights, and enabling the docking frame and protruding frame to dock with the feeding plates of different heights.

[0024] Preferably, each of the drying plates is provided with a heat insulation pad at the bottom.

[0025] By adopting the above technical solution, the heat insulation pad can effectively insulate the bottom of the drying board, thereby reducing the heat overflowing from the bottom of the drying board, effectively ensuring the drying efficiency of the leather, and also reducing energy consumption.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. The arrangement of several heat exchangers ensures that each heat exchanger corresponds to a drying plate, thereby ensuring that the hot water in the heating chamber of each dryer is transported through a separate heat exchanger. This reduces the likelihood of the drying plates influencing each other through the heat exchangers and decreases the likelihood of the temperature in the chamber between the remaining drying plates and the sealing cover dropping when the sealing cover is opened. This effectively improves the overall drying efficiency of leather in this application and also facilitates precise control of the temperature in the chamber between the drying plate and the sealing cover, effectively guaranteeing the drying efficiency of leather in this application. 2. The material changing mechanism is designed so that the moving component can drive the docking frame to approach the drying plate at the corresponding height. When the docking frame approaches the placement rack on the corresponding drying plate, the docking component can fix the docking frame to the corresponding material feeding plate. As the moving component drives the docking frame to slide, the docking frame can also slide the material feeding plate out of the drying plate, thereby removing the dried leather. After the leather on the stand is replaced by the subsequent replacement equipment, the moving component can place the material feeding plate after the leather replacement back onto the corresponding drying plate, thus facilitating the fixed-point replacement of leather by the replacement equipment. 3. The design of the lifting frame and lifting components allows the lifting components to slide the lifting frame in the height direction, thereby enabling the lifting frame to move to different heights to accommodate drying plates of different heights. This allows the docking frame and protruding frame to dock with feeding plates of different heights. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the leather vacuum drying equipment in Embodiment 1 of this application.

[0028] Figure 2 This is a schematic diagram of the structure of the sealing cover in Embodiment 1 of this application.

[0029] Figure 3 This is a schematic diagram of the leather vacuum drying equipment in Embodiment 2 of this application.

[0030] Figure 4 This is a schematic diagram illustrating the structure of the feeding plate in Embodiment 2 of this application.

[0031] Figure 5 This is a schematic diagram illustrating the structure of the protruding frame in Embodiment 2 of this application.

[0032] Figure 6 This is a structural schematic diagram of the docking component used in Embodiment 2 of this application.

[0033] Explanation of reference numerals in the attached drawings: 1. Machine body; 11. Lifting assembly; 12. Mounting frame; 2. Heat exchanger; 21. Water inlet pipe; 22. Water outlet pipe; 3. Drying plate; 31. Heating chamber; 32. Air extraction channel; 4. Sealing cover; 5. Air extraction pump; 6. Insulation pad; 7. Discharge plate; 71. Docking groove; 8. Material changing mechanism; 81. Vertical frame; 82. Lifting frame; 83. Lifting assembly; 84. Docking frame; 85. Moving assembly; 86. Protruding frame; 861. Buffer 87. Spring; 871. Connecting assembly; 872. Locking frame; 873. Return spring; 874. Unlocking component; 875. Unlocking frame; 876. Connecting frame; 8777. Linkage assembly; 888. Redirecting gear; 889. Linkage rack; 90. Driving mechanism; 91. Driving frame; 92. Returning component; 93. Unlocking assembly; 94. Linkage frame; 95. Linkage rod. Detailed Implementation

[0034] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0035] Example 1: This application discloses a vacuum drying apparatus for leather. (Refer to...) Figure 1 and Figure 2 The leather vacuum drying equipment includes a body 1, on which heat exchangers 2, several drying plates 3, and several sealing covers 4 are installed. The sealing covers 4 are located at the bottom of the corresponding drying plates 3. Each drying plate 3 has a heating chamber 31. Each drying plate 3 is slidably connected to the body 1. The number of heat exchangers 2 is set to several, and they are arranged one-to-one with the drying plates 3. Each heat exchanger 2 is equipped with a water inlet pipe 21 and a water outlet pipe 22. One end of the water inlet pipe 21 and the water outlet pipe 22 are connected to the corresponding heating chamber 31, and the other end is connected to the corresponding heat exchanger 2.

[0036] Reference Figure 1 The machine body 1 is also equipped with several lifting components 11. In this embodiment, each lifting component 11 is a combination structure of a reduction motor and a lead screw. Each reduction motor is fixedly installed on the top of the machine body 1, and its output shaft is vertically downward and fixedly connected to the top of the lead screw through a coupling. Each lead screw is rotatably connected to the machine body 1 through a bearing, and the bottom of each lead screw passes through the corresponding drying plate 3 and is threadedly connected to the corresponding drying plate 3 to drive the sliding of the drying plate 3.

[0037] Reference Figure 1 and Figure 2Each sealing cover 4 is correspondingly set with a drying plate 3. Each sealing cover 4 is a square ring-shaped body and is located directly above the corresponding drying plate 3. The top drying plate 3 is fixedly connected to the top of the machine body 1, and the tops of the other sealing covers 4 are fixedly connected to the bottoms of the adjacent drying plates 3 located above them by adhesive.

[0038] Reference Figure 2 Each sealing cover 4 has its bottom end abutting against the top wall of the next drying plate 3 to seal the space between adjacent drying plates 3. In this embodiment, each sealing cover 4 is made of rubber to ensure its sealing performance. The heating chamber 31 in each drying plate 3 is meandering to increase the heat transfer effect with the drying plate 3 by increasing the flow time of hot water within the drying plate 3, thereby increasing the drying efficiency of the leather. Both ends of the heating chamber 31 extend to the same side of the drying plate 3 and are connected to the outside.

[0039] Reference Figure 1 and Figure 2 A mounting bracket 12 is also provided on one side of the machine body 1. The mounting bracket 12 is placed on the ground, and each heat exchanger 2 is fixedly installed on the mounting bracket 12 and distributed along the height direction of the mounting bracket 12. One end of each water inlet pipe 21 is connected to one end of the corresponding heat exchanger 2, and the other end is connected to one end of the heating chamber 31 inside the corresponding drying plate 3. One end of each water outlet pipe 22 is connected to the other end of the corresponding heat exchanger 2, and the other end is connected to the other end of the heating chamber 31 inside the corresponding drying plate 3. In this embodiment, each water inlet pipe 21 and water outlet pipe 22 is configured as a flexible hose to accommodate the movement of the drying plate 3.

[0040] Reference Figure 1 and Figure 2 Each drying plate 3 has an air extraction channel 32 on its side wall, and one end of each air extraction channel 32 extends upward to the top wall of the corresponding drying plate 3, thereby communicating with the space above the corresponding drying plate 3. The mounting frame 12 is also equipped with an air extraction pump 5. One end of each air extraction channel 32 located on the side wall of the drying plate 3 is connected to the air extraction pump 5 through a flexible hose, so that the air extraction pump 5 can extract the air from the cavity between the drying plate 3 and the corresponding sealing cover 4 through the air extraction channel 32, ensuring the pressure in the cavity between the drying plate 3 and the sealing cover 4, and at the same time increasing the heat insulation performance of the space between the drying plate 3 and the corresponding sealing cover 4.

[0041] Reference Figure 2 Each drying plate 3 has an insulation pad 6 on its bottom wall and four side walls, and each insulation pad 6 is made of PU sponge. Each insulation pad 6 is fixedly connected to the corresponding drying plate 3 by adhesive to increase its heat preservation and insulation performance.

[0042] The implementation principle of a leather vacuum dryer according to Embodiment 1 of this application is as follows: During use, the lifting component 11 lowers the corresponding drying plate 3, causing the drying plate 3 to separate from the upper sealing cover 4. Then, personnel sprinkle water on the surface of the drying plate 3, lay the leather flat on the drying plate 3, and smooth the leather. After completion, the lifting component 11 raises the drying plate 3 again, so that the bottom end of the sealing cover 4 is once again in contact with the top end of the drying plate 3. Subsequently, the vacuum pump 5 extracts the air from the chamber between the drying plate 3 and the sealing cover 4 through the vacuum channel 32, and the heat exchanger 2 delivers hot water to the corresponding heating chamber 31. The drying plate 3 dries the leather through heat transfer.

[0043] Example 2: The difference between Embodiment 2 and Embodiment 1 in this application is that: (Refer to...) Figure 3 and Figure 4 Each drying plate 3 is equipped with a feeding plate 7, and each feeding plate 7 is slidably connected to the corresponding drying plate 3 via a slide rail, with the sliding direction being the width direction of the drying plate 3. The bottom wall of each feeding plate 7 is in contact with the top wall of the corresponding drying plate 3 to increase the efficiency of heat transfer. The top wall of each feeding plate 7 is used to place leather.

[0044] Reference Figure 3 and Figure 4 The machine body 1 is also provided with a material changing mechanism 8. The material changing mechanism 8 includes a stand 81, a lifting frame 82, a lifting component 83, a docking frame 84, and a moving component 85. The stand 81 is placed on the ground. In this embodiment, the bottom of the stand 81 is also provided with several rollers and a structure for driving the rollers to move, so that the stand 81 can move on the ground and approach the replacement equipment for replacing the leather on the material feeding plate 7 (not shown in the accompanying drawings). In this implementation, the replacement equipment can be a combination structure of a robotic arm and a conveyor belt, so that the robotic arm can replace the leather on the material feeding plate 7 on the lifting frame 82.

[0045] Reference Figure 3 and Figure 4 The number of lifting frames 82 and lifting components 83 is set to several, and they are arranged in pairs. In this embodiment, the number of lifting frames 82 is set to two, and the two lifting frames 82 are distributed along the height direction of the upright frame 81. Each lifting frame 82 is slidably connected to the upright frame 81, and the sliding direction is vertical.

[0046] Reference Figure 3 and Figure 4In this embodiment, each lifting component 83 is configured as a combination of a geared motor and a lead screw. Each geared motor is fixedly installed on the top of the support frame 81, and its output shaft is vertically downward and fixedly connected to the top of the lead screw via a coupling. Each lead screw is rotatably connected to the support frame 81 via a bearing, and the bottom of each lead screw passes through the corresponding lifting frame 82 and is threadedly connected to the corresponding lifting frame 82 to drive the sliding movement of the lifting frame 82.

[0047] Reference Figure 3 and Figure 4 Each lifting frame 82 is equipped with a docking frame 84, and each docking frame 84 is slidably connected to the corresponding lifting frame 82 via a slide rail, with the sliding direction being the width direction of the lifting frame 82. In this embodiment, each moving component 85 is configured as a combination structure of a reduction motor and a lead screw, with each reduction motor fixedly installed on the side end of the corresponding lifting frame 82, and the axial direction of the output shaft being the sliding direction of the corresponding docking frame 84.

[0048] Reference Figure 3 and Figure 4 Each of the geared motors has its output shaft fixedly connected to one end of a lead screw via a coupling. Each lead screw is rotatably connected to the corresponding lifting frame 82 via a bearing, and the other end of each lead screw passes through the corresponding docking frame 84 and is threadedly connected to the corresponding docking frame 84 to drive the sliding movement of the docking frame 84.

[0049] Reference Figure 4 , Figure 5 and Figure 6 Each material changing mechanism 8 further includes a protruding frame 86 and a docking assembly 87. Each protruding frame 86 is located on the side of the corresponding docking frame 84 near the feeding plate 7. Each protruding frame 86 is slidably connected to the corresponding docking frame 84, and the sliding direction is the same as the sliding direction of the corresponding docking frame 84. A buffer spring 861 is provided between each protruding frame 86 and the docking frame 84. The buffer spring 861 is sleeved on the corresponding docking frame 84, with one end abutting against the protruding frame 86 and the other end abutting against the docking frame 84, so as to allow the protruding frame 86 and the docking frame 84 to reset. Each feeding plate 7 has a docking groove 71 at the end near the docking frame 84.

[0050] Reference Figure 5 and Figure 6Each docking assembly 87 includes a locking frame 871, a return spring 872, and an unlocking element 873. In this embodiment, each docking assembly 87 has two locking frames 871. One end of each locking frame 871 is located within a corresponding protrusion 86 and is slidably connected to the corresponding protrusion 86, with the sliding direction perpendicular to the displacement direction of the docking frame 84. The other end of each locking frame 871 extends beyond the protrusion 86 and has a guide surface on the side away from the docking frame 84.

[0051] Reference Figure 4 , Figure 5 and Figure 6 Each locking frame 871 is fitted with a return spring 872. One end of each return spring 872 abuts against the side wall of the locking frame 871, and the other end abuts against the inner wall of the protruding frame 86 to reset the locking frame 871. This allows the locking frame 871 to extend beyond one end of the protruding frame 86 and be inserted into the feeding plate 7 when the end of the protruding frame 86 is inserted into the docking groove 71, thereby locking the protruding frame 86 and the docking frame 84 together, so that the protruding frame 86 can drive the docking frame 84 to slide together.

[0052] Reference Figure 5 and Figure 6 Each unlocking component 873 includes an unlocking bracket 8731 and a connecting bracket 8732. Each unlocking bracket 8731 has two connecting brackets 8732, with each connecting bracket 8732 corresponding to one of the two locking brackets 871. Each unlocking bracket 8731 is located within its corresponding protruding bracket 86 and is positioned on the side of its corresponding locking bracket 871 closest to the docking bracket 84. Each unlocking bracket 8731 is slidably connected to its corresponding protruding bracket 86, and the sliding direction is the same as the displacement direction of the protruding bracket 86.

[0053] Reference Figure 5 and Figure 6 Each connecting frame 8732 has one end rotatably connected to the corresponding locking frame 871 via a pin, and the other end of each connecting frame 8732 is rotatably connected to the corresponding unlocking frame 8731 via a pin, so that the unlocking frame 8731 can slide along the connecting frame 8732, causing the corresponding locking frame 871 to slide. Each docking frame 84 is provided with a linkage component 88 at one end near the protruding frame 86, and each linkage component 88 includes a redirecting gear 881 and two linkage racks 882.

[0054] Reference Figure 5 and Figure 6Two linkage racks 882 are located between the corresponding unlocking frame 8731 and the corresponding docking frame 84. One end of one linkage rack 882 is fixedly connected to the corresponding docking frame 84, and its extension direction is the sliding direction of the docking frame 84. One end of the other linkage rack 882 is fixedly connected to the corresponding unlocking frame 8731, and its extension direction is the sliding direction of the unlocking frame 8731. Each redirecting gear 881 is located between the corresponding two linkage racks 882, and is rotatably connected to the corresponding protruding frame 86 via a pin. Both linkage racks 882 mesh with the corresponding redirecting gear 881, so that the docking frame 84 can drive the unlocking frame 8731 to slide in the opposite direction.

[0055] Reference Figure 4 , Figure 5 and Figure 6 Initially, when the protruding bracket 86 is not inserted into the mating groove 71 on the feeding plate 7, the protruding bracket 86 and the mating bracket 84 are far apart, and one end of the locking bracket 871 extends out of the protruding bracket 86. When it is necessary to move the feeding plate 7 out of the drying plate 3, the mating bracket 84, driven by the moving component 85, moves the protruding bracket 86 closer to the feeding plate 7, so that the protruding bracket 86 is gradually inserted into the mating groove 71 on the feeding plate 7.

[0056] Reference Figure 4 , Figure 5 and Figure 6 During this process, the guide surface on the locking frame 871 abuts against the intersection between the side wall of the feeding plate 7 and the inner wall of the docking groove 71, causing the locking frame 871 to slide and gradually retract into the protruding frame 86. This allows the locking frame 871 to make way for the protruding frame 86, so that the end of the protruding frame 86 is inserted into the corresponding docking groove 71. When the protruding frame 86 reaches the designated position, the locking frame 871 returns to its initial position under the elastic force of the return spring 872, thus inserting itself into the protruding frame 86 and abutting against the inner side wall of the docking groove 71, thereby locking the protruding frame 86 and the feeding plate 7. Afterward, the moving component 85 drives the docking frame 84 to return to its initial position, thereby moving the feeding plate 7 onto the lifting frame 82.

[0057] Reference Figure 5 and Figure 6Each docking frame 84 is equipped with a driving mechanism 9, each driving mechanism 9 including a driving frame 91, a reset component 92, and an unlocking component 93. Each linkage rack 882 fixedly connected to the docking frame 84 is slidably connected to the corresponding driving frame 91, and the sliding direction is the same as the sliding direction of the locking frame 871, so that the driving frame 91 and the unlocking frame 8731 are located on their respective sliding paths. In this embodiment, the reset component 92 is set as a pressure spring, which is sleeved on the corresponding driving frame 91, with one end abutting against the end of the driving frame 91 away from the corresponding linkage rack 882, and the other end abutting against the corresponding linkage rack 882, so as to reset the driving frame 91 through its own elastic force.

[0058] Reference Figure 5 and Figure 6 Each drive frame 91 has a guide surface on its side near the corresponding unlocking frame 8731, so that when the guide surface of the drive frame 91 abuts against the end of the corresponding unlocking frame 8731, the drive frame 91 can move, thereby making way for the unlocking frame 8731. Each unlocking component 93 includes a linkage frame 931, a drive frame 932, and an abutment frame 933. The middle part of each linkage frame 931 is rotatably connected to the corresponding linkage rack 882 via a pin.

[0059] Reference Figure 5 and Figure 6 Each drive frame 932 is located at the end of the corresponding linkage rack 882 away from the redirecting gear 881, and is slidably connected to the corresponding linkage rack 882, with the sliding direction parallel to the unlocking direction of the corresponding drive frame 91. Each drive frame 932 is fitted with a spring spring 94, which is located on the side of the corresponding linkage rack 882 away from the redirecting gear 881, with one end abutting against the corresponding drive frame 932 and the other end abutting against the corresponding linkage rack 882.

[0060] Reference Figure 5 and Figure 6 Each linkage frame 931 has a linkage groove 9311 extending through both ends along its length. Each drive frame 91, at its end furthest from the unlocking frame 8731, and each drive frame 932, at its end near the redirecting gear 881, have a linkage rod 95 extending from them. The linkage rod 95 is fixedly connected to the corresponding drive frame 91 or drive frame 932. One end of each linkage rod 95 extends into the corresponding linkage groove 9311, and its sidewall abuts against the inner sidewall of the corresponding linkage groove 9311.

[0061] Reference Figure 4 , Figure 5 and Figure 6Each drive frame 932 has a guide surface on its side away from the redirecting gear 881, and this guide surface is located on the side of the drive frame 932 away from the corresponding drive frame 91. Each abutment frame 933 is located on the side of the corresponding lifting frame 82 away from the discharge plate 7, and is fixedly connected to the corresponding lifting frame 82. One end of each abutment frame 933 extends towards the docking frame 84, and is located on the displacement path of the corresponding drive frame 932.

[0062] Reference Figure 4 , Figure 5 and Figure 6 In the initial state, when the protruding frame 86 is not inserted into the docking slot 71, the driving frame 91 is located on the side of the unlocking frame 8731 near the reversing gear 881. When the protruding frame 86 moves the feeding plate 7 onto the lifting frame 82, so that the dried leather on the feeding plate 7 is removed by the replacement equipment and undried leather is placed, the docking frame is not in contact with the driving frame 932 at this time. Subsequently, after the protruding frame 86 moves the feeding plate 7 back onto the drying plate 3, when the feeding plate 7 moves to the end of its own displacement path, so that the feeding plate 7 abuts against the end of the slide rail, making it impossible for the feeding plate 7 to continue moving, the docking frame 84 continues to move, at which time the docking frame 84 and the protruding frame 86 undergo relative displacement.

[0063] Reference Figure 4 , Figure 5 and Figure 6 During this process, the linkage rack 882 drives another linkage rack 882 to slide through the redirecting gear 881, thereby causing the unlocking frame 8731 to slide away from the locking frame 871. At this time, the unlocking frame 8731 drives the locking frame 871 to gradually retract into the protruding frame 86 through the connecting frame 8732. During this process, the driving frame 91 gradually approaches the unlocking frame 8731 and slides after contacting the unlocking frame 8731, thereby causing the driving frame 91 to give way to the unlocking frame 8731, so that the driving frame 91 moves to the side of the unlocking frame 8731 away from the redirecting gear 881. At this time, the locking frame 871 is completely retracted into the protruding frame 86.

[0064] Reference Figure 4 , Figure 5 and Figure 6At this point, the driving frame 91 abuts against the unlocking frame 8731, thereby locking the driving frame 91 and the unlocking frame 8731 together, keeping the locking frame 871 retracted into the protruding frame 86. Subsequently, the protruding frame 86 slides in the opposite direction along with the docking frame 84, eventually sliding out of the docking groove 71, causing the protruding frame 86 to disengage from the discharge plate 7. During this process, the protruding frame 86 gradually approaches the abutting frame 933. When the end of the abutting frame 933 passes through the docking frame 84 and abuts against the guide surface on the driving frame 932, the driving frame 932 slides, causing the driving frame 932 to drive the linkage frame 931 to rotate. At this time, the linkage frame 931 drives the driving frame 91 away from the unlocking frame 8731. At this time, under the elastic force of the buffer spring 861, the protruding frame 86 moves away from the docking frame 84, thereby causing the driving frame 91 to return to the side of the unlocking frame 8731 close to the reversing gear 881, and thus causing both the locking frame 871 and the driving frame 91 to return to their initial positions.

[0065] The implementation principle of the leather vacuum drying equipment in Embodiment 2 of this application is as follows: When it is necessary to replace the dried leather, the moving component 85 drives the docking frame 84 and the protruding frame 86 to approach the corresponding feeding plate 7, so that the protruding frame 86 is inserted into the docking groove 71 on the feeding plate 7, and the protruding frame 86 is locked and fixed to the feeding plate 7 by the locking frame 871. Then, the moving component 85 drives the docking frame 84 away from the drying plate 3, so that the feeding plate 7 moves to the lifting frame 82. After that, the leather replacement equipment replaces the leather on the feeding plate 7.

[0066] After the replacement is completed, the moving component 85 moves the docking frame 84 closer to the drying plate 3, causing the discharge plate 7 to move onto the drying plate 3. When the discharge plate 7 moves to the end of its sliding path, the docking frame 84 and the protruding frame 86 undergo relative displacement, causing the locking frame 871 to fully retract into the protruding frame 86 and interlocking the driving frame 91 with the unlocking frame 8731. Subsequently, the docking frame 84 moves the protruding frame 86 away from the discharge plate 7 and returns to its initial position. During this process, the abutment frame 933 abuts against the driving frame 932, causing the unlocking frame 8731 to unlock from the driving frame 91, and causing the protruding frame 86 and the locking frame 871 to return to their initial positions.

[0067] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A vacuum drying device for leather, comprising a body (1), wherein a heat exchanger (2) and several drying plates (3) and several sealing covers (4) are disposed on the body (1), the sealing covers (4) being disposed at the bottom of the corresponding drying plates (3), and each drying plate (3) having a heating chamber (31) therein, characterized in that: Each of the drying plates (3) is slidably connected to the body (1). The number of heat exchangers (2) is set to several and is arranged one-to-one with the drying plates (3). Each heat exchanger (2) is provided with an inlet pipe (21) and an outlet pipe (22). One end of the inlet pipe (21) and the outlet pipe (22) are connected to the corresponding heating chamber (31), and the other end is connected to the corresponding heat exchanger (2). Each of the drying plates (3) is provided with a feeding plate (7) on its top wall. Each feeding plate (7) is slidably connected to the corresponding drying plate (3), and the sliding path extends out of the corresponding drying plate (3). Each feeding plate (7) is used to place leather on its top wall. The machine body (1) is also provided with a material changing mechanism (8). The material changing mechanism (8) includes a stand (81), a docking frame (84), a moving component (85), and a docking component (87). The docking frame (84) is slidably connected to the stand (81), and the feeding plate (7) at the same height is located on the displacement path of the docking frame (84). The moving component (85) is used to drive the docking frame (84) to slide. The docking component (87) is used to fix the docking frame (84) and the corresponding feeding plate (7) when the docking frame (84) is close to the corresponding feeding plate (7). The docking frame (84) is provided with a protruding frame (86), the end of which is inserted into the corresponding feeding plate (7). The docking assembly (87) includes a locking frame (871) and an unlocking member (873). One end of the locking frame (871) is located inside the protruding frame (86) and is slidably connected to the protruding frame (86). The other end of the locking frame (871) extends out of the protruding frame (86) and is inserted into the corresponding feeding plate (7). The unlocking member (873) is used to drive the locking frame (871) to slide. The protruding frame (86) is slidably connected to the docking frame (84), and the sliding direction is the same as the sliding direction of the docking frame (84). The unlocking component (873) includes an unlocking frame (8731) and a connecting frame (8732). The unlocking frame (8731) is slidably connected to the protruding frame (86). One end of the connecting frame (8732) is rotatably connected to the unlocking frame (8731), and the other end is rotatably connected to the locking frame (871). The docking frame (84) is also provided with a linkage component (88) at one end near the protruding frame (86). The docking frame (84) drives the unlocking frame (8731) to slide through the linkage component (88). The docking frame (84) is also provided with a driving mechanism (9), which includes a driving frame (91), a reset member (92) and an unlocking component (93). The driving frame (91) is slidably connected to the docking frame (84), and the sliding direction is perpendicular to the sliding direction of the protruding frame (86). One end of the driving frame (91) extends out of the docking frame (84), and the unlocking frame (8731) is located on the displacement path of the driving frame (91) as it slides with the docking frame (84). The reset member (92) is used to return the driving frame (91) to its initial position. The unlocking component (93) is used to drive the driving frame (91) to slide when the driving frame (91) moves to the end of the unlocking frame (8731) away from the docking frame (84).

2. The leather vacuum drying equipment according to claim 1, characterized in that: The unlocking component (93) includes a linkage frame (931), a drive frame (932), and an abutment frame (933). The middle part of the linkage frame (931) is rotatably connected to the docking frame (84). Both ends of the linkage frame (931) are provided with linkage grooves (9311). One end of the drive frame (91) and the drive frame (932) are located in the linkage grooves (9311) and abut against the inner wall of the linkage grooves (9311). The drive frame (932) is slidably connected to the docking frame (84). The abutment frame (933) is connected to the upright frame (81) and is located on the displacement path of the drive frame (932) as the docking frame (84) moves.

3. The leather vacuum drying equipment according to claim 1, characterized in that: The linkage assembly (88) includes a reversing gear (881) and two linkage racks (882). One linkage rack (882) is connected to the unlocking frame (8731), and the other linkage rack (882) is connected to the docking frame (84). The reversing gear (881) is located between the two linkage racks (882) and meshes with both linkage racks (882).

4. The leather vacuum drying equipment according to claim 1, characterized in that: The material changing mechanism (8) further includes a lifting frame (82) and a lifting assembly (83). The lifting frame (82) is slidably connected to the upright frame (81), and the sliding direction is the height direction of the upright frame (81). The docking frame (84) is disposed on the lifting frame (82) and slidably connected to the lifting frame (82). The lifting assembly (83) is used to drive the lifting frame (82) to slide.

5. The leather vacuum drying equipment according to claim 1, characterized in that: Each of the drying plates (3) is provided with a heat insulation pad (6) at the bottom.

Images