Automatic rotary type four-direction toggling drying machine and drying process thereof

Abstract

The invention discloses an automatic rotation type four-direction toggling dryer and a drying process thereof, and the automatic rotation type four-direction toggling dryer comprises a drying box which is internally provided with a heating part for evaporating water in leather; the driving part is used for driving the screen plate to do rotary circulating motion on the track; the opening component is used for applying four-direction drawing force to the leather; the plate overturning part is used for automatically overturning the screen plate; the net plate is used for clamping leather; and the track is used for hanging the screen plate. According to the drying machine, the labor intensity of workers is reduced, the production efficiency is improved, multi-direction stretching of leather is achieved, and the product quality is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of leather drying machines, and particularly relates to an automatic rotary four-way stretching and drying machine. Background Art

[0002] With the long-term development of the market, the use of leather by people is increasing, resulting in an increasing demand for leather. At the same time, the requirements for leather products are also getting higher and higher. In the leather production process, the drying process is a crucial link, directly affecting the quality and performance of leather. During the drying process of leather, a leather drying machine is required to perform stretching and shaping drying on the processed leather, so that the leather can be better processed in subsequent processing steps and the overall processing efficiency of leather can be improved.

[0003] Traditional leather stretching and drying machines include a drying box, a mesh plate, a heat exchanger, etc. The mesh plate of the leather drying machine consists of two upper and lower pieces. During the stretching process, the upper and lower mesh plates are vertically separated by a pneumatic component, and mostly only one-way or two-way stretching can be achieved, making it difficult to fully stretch the leather in multiple directions, resulting in problems such as wrinkles and uneven tension in the dried leather, affecting the quality of the leather.

[0004] In addition, at present, when the leather stretching and drying machine works, the leather is fixed on the mesh plate by workers, and then the workers manually push it into the drying box to perform stretching and drying on the leather, and then the workers manually pull the mesh plate out of the drying box. All operations are completed manually by workers, with low production efficiency and a relatively high labor intensity for workers. Moreover, since the mesh plate can only move up and down, only two-directional tensile forces can be generated on the leather, and there is no stretching effect on the neck pattern of the leather. The neck pattern is still quite obvious after processing, and high-quality leather embryos cannot be obtained, making it difficult to meet the requirements of high-quality large-scale industrial production. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide an automatic rotary four-way stretching and drying machine, which reduces the labor intensity of workers, improves production efficiency, and realizes multi-directional stretching of leather to improve product quality.

[0006] To solve the above technical problems, the present invention adopts the following technical solutions: An automatic rotary four-way stretching and drying machine, comprising

[0007] A drying box, which is provided with heating components for evaporating the moisture inside the leather;

[0008] A driving component for driving the mesh plate to perform a rotary circular motion on the track;

[0009] A stretching component for applying four-way tensile forces to the leather;

[0010] A flap component for automatically flipping the mesh plate;

[0011] Mesh panels are used to hold leather.

[0012] Tracks are used to suspend the mesh panels.

[0013] Furthermore, the driving component includes a motor, a reducer, a chain, and a plate-shifting trolley; the motor of the driving component is reduced in speed by the reducer, and then drives the plate-shifting trolley to reciprocate along the trolley track via the chain; the plate-shifting trolley is equipped with a plate-shifting knife; when the plate-shifting trolley moves forward, the plate-shifting knife on the plate-shifting trolley engages with the screen hanging rod, causing the screen to move and automatically enter and exit the drying oven.

[0014] Furthermore, the stretching component includes a cylinder frame, a tilting cylinder, a stretching cylinder, a shift fork, and a linkage mechanism; the tilting cylinder and the stretching cylinder are mounted on the cylinder frame; the shift fork is mounted on the piston rod of the stretching cylinder; after the mesh plate reaches the predetermined position, a limit switch is triggered, and the tilting cylinder moves to drive the stretching cylinder to stand upright; the shift fork engages with the mesh plate; the stretching cylinder drives the shift fork to move upward, causing the mesh plate to be stretched vertically, while simultaneously driving the small mesh plate to slide horizontally through the linkage mechanism, thereby achieving four-way stretching of the leather, both vertically and horizontally.

[0015] Furthermore, the stretching component also includes an adjusting screw for adjusting the stretching stroke of the stretching cylinder and the balance of the four-way stretching force.

[0016] Furthermore, the flipping component is set on the flipping station and includes a mesh clamp, a cylinder-driven swing arm, and nylon fingers; after the mesh reaches the flipping position, the corresponding limit switch is triggered, the mesh clamp clamps the mesh hanging rod, the cylinder of the flipping component drives the swing arm to rotate, and the cylinder of the finger at the end of the swing arm drives the nylon fingers to clamp the mesh, thus completing the automatic flipping of the mesh.

[0017] Furthermore, the mesh plate consists of two large mesh plates, one upper and one lower, and four slidable small mesh plates; connected by a linkage mechanism, the four small mesh plates are assembled in the slide of the large mesh plate by clamps, and slide horizontally along the slide to cooperate with the vertical movement of the large mesh plate.

[0018] Furthermore, the track is composed of double rows of channel steel and is fixed to the main body of the equipment via track beams.

[0019] Furthermore, the heating component consists of a heat exchanger, a circulating fan, a control valve, and pipes; steam enters the heat exchanger through the pipes, and the circulating fan drives cold air to blow through the heat exchanger, carrying away the heat energy of the steam and turning the cold air into hot air, which enters the drying chamber to dry and shape the leather; the control valve is installed on the pipes to control the amount of steam.

[0020] The present invention also provides a drying process for a leather dryer equipped with a four-way stretching assembly, comprising the following steps:

[0021] 1) Leather treatment: Clean and degrease the dried leather, remove surface impurities and excess oil, and adjust the initial state of the mesh plate according to the type of leather;

[0022] 2) Laying and positioning: The mesh panel clamping action clamps the mesh panel hanging rod. The flipping mechanism cylinder drives the swing arm to move, and the finger cylinder at the end of the swing arm drives the nylon fingers to clamp the mesh panel. The cylinder rotates, causing the swing arm to rotate and flip the mesh panel to a horizontal state. The leather is laid flat on the mesh panel by hand, and the edges of the leather are fixed to the mesh panel by clips. The flipping mechanism continues to work, flipping the mesh panel 180°. The leather is then laid flat on the other side of the mesh panel by hand and fixed with clips.

[0023] 3) Flipping process: After flattening and positioning, the drive unit works. The motor is reduced in speed by the reducer and drives the plate-moving trolley to run along the double-row channel steel track through the chain. The screen plate is suspended on the track by the slide and moves automatically along the preset circulation path. When the screen plate reaches the second flipping station, the corresponding limit switch is triggered, the screen plate clamping action is activated, and the screen plate hanging rod is clamped. At this time, the flipping mechanism cylinder drives the swing arm to move, and the finger cylinder at the end of the swing arm drives the nylon finger to clamp the screen plate. The cylinder rotates and drives the swing arm to rotate to complete the flipping action, so that the screen plate is in the vertical state.

[0024] 4) Four-way stretching and shaping: After the mesh plate is in place, the tilting cylinder pushes the stretching cylinder to stand upright, so that the shift fork is engaged in the mesh plate hanging rod slot, triggering the pressure sensor at the bottom of the stretching cylinder; the stretching cylinder moves upward, driving the shift fork to lift the mesh plate; while the mesh plate is lifted, the four small mesh plates are driven to expand horizontally outward along the large mesh plate slide through the linkage mechanism, forming a bidirectional stretching force in the X and Y axes;

[0025] 5) Heating and drying: The trolley drives the mesh plate into the drying zone, the steam source enters the heat exchanger through the pipeline, and the circulating fan heats the cold air to the set temperature for drying.

[0026] The beneficial effects of this invention are as follows:

[0027] The infeed and outfeed screens, moving screens, and flipping screens of this invention are all completed automatically, without the need for manual operation, which greatly reduces the labor intensity of workers and improves production efficiency.

[0028] The mesh consists of six pieces. When stretched, the four smaller mesh pieces can move horizontally along with the larger mesh piece while moving vertically. This generates a four-way tensile force on the leather, both vertically and horizontally, solving the problem of the single tensile force direction in traditional equipment. This avoids lateral wavy undulations in the product and reduces the difficulty of subsequent processing.

[0029] Four-way tensile force can effectively stretch the grain of the leather neck, improve leather quality, and meet the needs of modern high-end leather products. Attached Figure Description

[0030] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0031] Figure 1 This is a schematic diagram of the driving component of the present invention.

[0032] Figure 2 This is a schematic diagram of the moving plate trolley structure.

[0033] Figure 3 This is a schematic diagram showing the state of the component after it has been opened.

[0034] Figure 4 A schematic diagram showing the state of the component before it is opened.

[0035] Figure 5 This is a schematic diagram of the state before the mesh panel is opened.

[0036] Figure 6 This is a schematic diagram showing the state of the mesh panel after it has been stretched open.

[0037] Figure 7 This is a schematic diagram of the wire mesh clamping structure.

[0038] Figure 8 This is a schematic diagram of the flip-up component before it flips up.

[0039] Figure 9 This is a schematic diagram of the flip-up component after it has flipped up. Detailed Implementation

[0040] The technical solution of the present invention will be clearly and completely described below through specific embodiments.

[0041] refer to Figures 1-9 This invention discloses an automatic rotary four-way stretching dryer comprising a drying chamber, a driving component, a supporting component, a flipping component, a mesh plate, and a track. The drying chamber is equipped with a heating component for evaporating moisture from the leather; the driving component drives the mesh plate to rotate cyclically on the track; the supporting component applies four-way stretching force to the leather; the flipping component automatically flips the mesh plate; the mesh plate clamps the leather; and the track suspends the mesh plate.

[0042] All mesh panels are suspended on the track by a carriage. The track is installed on a track beam, which is supported by columns. The track forms a closed loop structure. During operation, the mesh panels are driven by a drive component to rotate and circulate on the track.

[0043] The automatic rotary four-way flattening dryer of this embodiment is provided with a spreading working area, a first flipping working area, a drying area and a second flipping working area in sequence. The drying area is provided with a drying box, the first flipping working area and the second flipping working area are provided with flipping components, and the spreading working area is provided with spreading components.

[0044] In this embodiment, the driving component (see attached) Figure 1 The system consists of a motor 1, a reducer 2, a chain, and a transfer trolley 3. The motor, after being reduced in speed by the reducer, drives the drive sprocket, which in turn drives the chain and driven sprockets. The transfer trolley is rigidly connected to the chain via a chain connector. After the operator lays the leather, they press the start button. The motor, after being reduced in speed by the reducer, drives the transfer trolley along the track via the chain. A transfer blade 301 is installed on the transfer trolley. The transfer blade 301 is connected to the trolley body via a rotating shaft and a return spring 302. A limit stop 303 is also installed on one side of the trolley body. When the transfer trolley moves forward, the transfer blade engages with the mesh plate hanging rod, causing the mesh plate to move and automatically enter and exit the drying chamber.

[0045] Spreading components (see attached) Figure 3 It consists of a cylinder frame 8, a tilting cylinder 5, a stretching cylinder 6, a shift fork 9, and an adjusting screw 10.

[0046] The bottom of the tilting cylinder 5 is hinged to the cylinder frame 8. The stretching cylinder 6 is fixed on the stretching cylinder mounting base. The bottom of the stretching cylinder mounting base 6-1 is hinged to the cylinder frame 8. The stretching cylinder 6 is fixedly installed on the stretching cylinder mounting base 6-1. The shift fork 9 is installed on the piston rod of the stretching cylinder 6.

[0047] After the mesh panel is pushed to the predetermined position, the limit switch is triggered, the tilting cylinder 5 actuates, the tilting cylinder 5 stands upright, and the shift fork 9 engages with the mesh panel. Simultaneously, the limit switch at the bottom of the stretching cylinder is triggered, and the stretching cylinder 6 actuates, causing the shift fork 9 to move upward. The shift fork 9 drives the mesh panel to move upward, and as the mesh panel moves upward, it drives the small mesh panel to move horizontally via the linkage mechanism 7. This allows the leather to receive tensile forces in four directions—vertical (up and down) and horizontal (left and right)—during the mesh panel's expansion, achieving four-way stretching of the leather.

[0048] The stretching component also includes an adjusting screw 10, used to adjust the stretching stroke of the stretching cylinder and the balance of the four-way stretching force. The adjusting screw includes a nut and a screw rod. The nut is fixed on the stretching cylinder mounting base, and the stretching stroke of the stretching cylinder is adjusted by rotating the screw rod.

[0049] The flip-plate component consists of a mesh plate clamp 11 and a flip-plate mechanism.

[0050] The mesh clamp includes a clamp frame 101 and a clamp cylinder 102. The end of the clamp cylinder 102 is hinged to the clamp frame 101. The end of the clamp arm 103 of the clamp is rotatably connected to the clamp frame. A clamp body 104 is provided at the front end. The piston rod of the clamp cylinder is rotatably connected to the middle of the clamp arm. The clamp cylinder drives the clamp arm to rotate, and the clamp body clamps the hanging rod.

[0051] The flipping mechanism includes a flipping mechanism cylinder 13, a drive swing arm 14, a chain, and a pair of sprockets. The flipping mechanism cylinder 13 is a double-rod hydraulic cylinder, with piston rods at both ends connected to the chain, which drives the sprockets to rotate. The swing arm 14 is fixed on one of the sprockets, and the rotation of the sprocket drives the swing arm to rotate. The flipping mechanism cylinder 13 is fixed on the hydraulic frame. When the screen reaches the predetermined position, the corresponding limit switch is triggered, and the screen clamp 11 clamps the screen hanging rod 12. At this time, the flipping mechanism cylinder 13 is activated, driving the swing arm 14 through the sprockets. The finger cylinder at the end of the swing arm drives the nylon fingers to clamp the screen, and the flipping mechanism cylinder 13 drives the swing arm to rotate to complete the flipping action.

[0052] In this embodiment, the heating element is located inside the drying chamber and mainly consists of a heat exchanger, a circulating fan, control valves, and pipes. The heat source is steam. Steam enters the heat exchanger via a track. The circulating fan drives cold air across the heat exchanger, carrying away the heat energy of the steam and turning the cold air into hot air, which then enters the drying chamber to dry and shape the leather. Control valves are installed on the pipes to control the amount of steam. The hot steam is condensed and either discharged or recycled for reuse.

[0053] The mesh panel in this embodiment consists of two large mesh panels (upper and lower), four small mesh panels, a linkage mechanism, and a hanging rod slide.

[0054] The large mesh panel consists of an outer frame and a panel body. The panel body is located in the middle of the outer frame, and spaces for installing smaller mesh panels are provided on both sides of the panel body. The spacing between these spaces is greater than the width of the smaller mesh panels to facilitate their movement. Four smaller mesh panels are assembled inside the large mesh panel using clips. The smaller mesh panels can slide within the large mesh panel's tracks (the smaller mesh panels are slidably connected to the outer frame via sliders) and are used for laying and securing the leather.

[0055] The linkage mechanism in this embodiment includes a long rod, a short rod, and a triangular connecting plate; for example, one end of the long rod is hinged to the large mesh plate below, the top and middle parts are hinged to the triangular connecting plate, the triangular connecting plate is hinged to the large mesh plate above, one end of the short rod is hinged to the triangular connecting plate, and the other end is hinged to the small mesh plate.

[0056] The track is composed of double rows of channel steel and is fixed to the main body of the equipment by track beams. Because it is a double-row track, the mesh panel can be reliably suspended on the track and will never fall off, ensuring the smooth and reliable operation of the mesh panel.

[0057] This equipment adopts a dual-operating-table design. An auxiliary operating table is set on one side of the main operating area (located in the area of ​​the spreading components). Operators can remove the clamps in advance on the auxiliary operating table, saving waiting time, improving production efficiency, and achieving the purpose of energy conservation and emission reduction.

[0058] First, the operator lays the leather on the mesh board, which consists of two large mesh boards and four small mesh boards. The four small mesh boards are assembled in the large mesh board by clips and can slide in the slide of the large mesh board, making it convenient to lay and fix the leather.

[0059] After the mesh is laid, the operator presses the start button, and the drive unit begins to work. The motor 1 in the drive unit, after being reduced in speed by the reducer 2, drives the transfer trolley 3 to reciprocate via a chain, thereby causing the mesh plate 4 to rotate and circulate on the track. The track is composed of double rows of channel steel and is fixed to the main body of the equipment by track beams. The double rows of track ensure that the mesh plate is reliably suspended and will not fall.

[0060] Once the mesh panel is pushed to the predetermined position, the limit switch is triggered, and the stretching component begins to operate. The tilting cylinder 5 actuates, causing the stretching cylinder to stand upright. The fork 9 engages with the mesh panel, simultaneously triggering the limit switch at the bottom of the stretching cylinder. The stretching cylinder 6 then actuates, driving the fork 9 upwards. The fork 9 moves the mesh panel upwards, and simultaneously, the small mesh panel moves horizontally via the linkage mechanism 7. This results in the leather being subjected to four-way tensile forces—vertical (up and down) and horizontal (left and right)—during the stretching process, effectively addressing issues such as the texture of the leather neck.

[0061] Once the mesh panel reaches the predetermined position for the flipping mechanism, the corresponding limit switch is triggered, and the flipping mechanism begins to operate. The mesh panel clamp 11 clamps the mesh panel hanging rod 12. At this time, the flipping mechanism cylinder 13 drives the swing arm 14 to move. The finger cylinder at the end of the swing arm drives the nylon finger to clamp the mesh panel. The rotation of the cylinder 13 drives the swing arm to rotate, completing the flipping action and realizing the automatic flipping of the mesh panel.

[0062] The heating element is located inside the drying chamber, and the heat source is steam. The steam enters the heat exchanger through pipes, and a circulating fan drives cold air to blow through the heat exchanger, carrying away the heat energy of the steam and turning the cold air into hot air, which then enters the drying chamber to dry and shape the leather. The hot steam becomes condensate and is either discharged or recycled for reuse, ensuring high efficiency and energy saving in the drying process.

[0063] Example 2

[0064] The drying process of a leather dryer equipped with a four-way stretching component according to this embodiment includes the following steps:

[0065] 1) Leather treatment: Clean and degrease the dried leather, remove surface impurities and excess oil, and adjust the initial state of the mesh plate according to the type of leather;

[0066] 2) Laying and positioning: The mesh clamp 11 moves to clamp the mesh hanging rod 12. The flipping mechanism cylinder 13 drives the swing arm 14 to move, and the finger cylinder at the end of the swing arm drives the nylon fingers to clamp the mesh. The rotation of cylinder 13 drives the swing arm to rotate, so that the mesh is flipped to a horizontal state. The leather is laid flat on the mesh, and the edges of the leather are fixed to the mesh with clips. The flipping mechanism continues to work, flipping the mesh 180°. The leather is then laid flat on the other side of the mesh and fixed with clips.

[0067] 3) Flipping process: After flattening and positioning, the drive unit works. The motor is reduced in speed by the reducer and drives the plate moving trolley to run along the double-row channel steel track through the chain. The screen plate is suspended on the track by the slide and moves automatically along the preset circulation path. When the screen plate reaches the second flipping station, the corresponding limit switch is triggered and the screen plate clamp 11 is activated to clamp the screen plate hanging rod 12. At this time, the flipping mechanism cylinder 13 drives the swing arm 14 to move, and the finger cylinder at the end of the swing arm drives the nylon finger to clamp the screen plate. The cylinder 13 rotates and drives the swing arm to rotate to complete the flipping action, so that the screen plate is in the vertical state.

[0068] 4) Four-way stretching and shaping: After the mesh plate is in place, the tilting cylinder pushes the stretching cylinder to stand upright, so that the shift fork is engaged in the mesh plate hanging rod slot, triggering the pressure sensor at the bottom of the stretching cylinder; the stretching cylinder moves upward, driving the shift fork to lift the mesh plate; while the mesh plate is lifted, the four small mesh plates are driven to expand horizontally outward along the large mesh plate slide through the linkage mechanism, forming a bidirectional stretching force in the X and Y axes;

[0069] 5) Heating and drying: The trolley drives the mesh plate into the drying zone, the steam source enters the heat exchanger through the pipeline, and the circulating fan heats the cold air to the set temperature for drying.

[0070] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art can make various modifications or equivalent substitutions to the present invention within the scope of its essence and protection. Such modifications or equivalent substitutions should also be considered to fall within the protection scope of the present invention.

Claims

1. An automatic rotary four-way tenter dryer characterized by: The invention relates to a leather drying and stretching machine, which comprises a drying box, a driving component, a stretching component, a plate turning component, a net plate and a track. The driving component comprises a motor, a speed reducer, a chain and a plate moving trolley; the motor of the driving component drives the plate moving trolley to move along the track through the chain after being decelerated by the speed reducer; a plate moving knife is arranged on the plate moving trolley; When the plate moving trolley moves forward, the plate moving knife on the plate moving trolley clamps the net plate hanging rod, and drives the net plate to move in and out of the drying box. The stretching component comprises a cylinder frame, an inclined cylinder, a leather stretching cylinder, a fork and a connecting rod mechanism; the inclined cylinder and the leather stretching cylinder are installed on the cylinder frame; the piston rod of the leather stretching cylinder is installed on the fork; when the net plate reaches a predetermined position, a stroke switch is triggered, the inclined cylinder is driven to act, the leather stretching cylinder is erected, the fork is clamped into the net plate, the leather stretching cylinder drives the fork to move upward, the upper net plate is vertically stretched, the small net plate is horizontally slid through the connecting rod mechanism, and the leather is stretched in four directions. The stretching component further comprises an adjusting screw for adjusting the stretching stroke of the leather stretching cylinder and the balance of the four-way stretching force. The plate turning component is arranged on a plate turning station and comprises a net plate clamp, a cylinder driven swing arm and a nylon finger; when the net plate reaches a plate turning position, a corresponding stroke switch is triggered, the net plate clamp clamps the net plate hanging rod, the plate turning component cylinder drives the swing arm to rotate, the finger cylinder at the end of the swing arm drives the nylon finger to clamp the net plate, and the automatic turning of the net plate is completed. The net plate is composed of two upper and lower large net plates and four slidable small net plates; the four small net plates of the net plate are assembled in the slide way of the large net plate through the clamping piece and horizontally slide along the slide way to match the vertical movement of the large net plate.

2. The automatic rotary four-way taping and drying machine according to claim 1, characterized in that: The track is composed of double-row channel steels and is fixed on the equipment main body through a track beam. The heating component is composed of a heat exchanger, a circulating fan, a control valve and a pipeline; steam enters the heat exchanger through the pipeline, the circulating fan drives cold air to blow through the heat exchanger, the heat energy of the steam is taken away to make the cold air become hot air into the drying box, the leather is dried and shaped, and the control valve is installed on the pipeline to control the amount of steam.

3. The automatic rotary four-way taut dry press according to claim 1, wherein: The method comprises the following steps:

4. The automatic rotary four-way taut dry press according to claim 3, characterized in that: 1) leather processing: the dried leather is cleaned and degreased, surface impurities and excess grease are removed, and the initial state of the net plate is adjusted according to the type of the leather; 5. The automatic rotary four-way taut dry press according to claim 1, wherein: 2) flat positioning: the net plate clamp clamps the net plate hanging rod, the swing arm of the plate turning mechanism is driven to act, the nylon finger is clamped by the finger cylinder at the end of the swing arm, the swing arm is rotated by the cylinder to make the net plate turn over to the horizontal state; the leather is flatly laid on the net plate by manual work, the edges of the leather are fixed on the net plate through the clamping piece; the plate turning component continues to work, the net plate is turned over by 180 degrees, the leather is flatly laid on the other side of the net plate by manual work, and the leather is fixed by the clamp.

6. The automatic rotary four-way taut dry press according to claim 1, wherein: ​ 7. The automatic rotary four-way taut dry press according to claim 1, wherein: ​ 8. The automatic rotary four-way taut dry press according to claim 1, wherein: ​ 9. A drying process using the automatic rotary four-way taping drying machine according to claim 1, characterized in that: ​ ​ ​ 3) Turn plate processing: after laying flat and positioning, the driving component works, the motor is decelerated through the reducer, the plate moving trolley is driven to run along the double-row channel steel track, the net plate is suspended on the track by the slide, and moves automatically along the preset circulating path; the net plate reaches the second turn plate station and triggers the corresponding travel switch, the net plate clamping action is triggered, the net plate hanging rod is clamped, at this time the turn plate mechanism cylinder drives the swing arm to act, and the nylon finger at the end of the swing arm is driven by the pointing cylinder to clamp the net plate, the cylinder rotates to drive the swing arm to rotate to complete the turn plate action, so that the net plate is in the vertical state; 4) Self four-way stretching shaping: after the net plate is in place, the inclined cylinder pushes the skin stretching cylinder to stand up, so that the fork is clamped into the upper net plate hanging rod clamping groove, and the skin stretching cylinder bottom pressure sensor is triggered; the skin stretching cylinder moves upward to drive the fork to lift the upper net plate; the upper net plate is lifted, and four small net plates are driven to expand horizontally along the large net plate slide through the connecting rod mechanism, forming two-way stretching force of X and Y axes; 5) Heating and drying: the plate moving trolley drives the net plate into the drying area, the steam source enters the heat exchanger through the pipeline, the circulating fan heats the cold air to the set temperature, and the drying treatment is carried out.

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