A hot pressing device for nonwoven fabric processing

Abstract

This invention relates to the field of nonwoven fabric processing technology, specifically to a hot pressing device for nonwoven fabric processing. The device includes a frame and a fabric body passing through the frame. Multiple hot pressing components are movably arranged on the frame. Each hot pressing component includes a heat-insulating shell symmetrically and movably mounted on the frame for clamping the fabric body, and a movable block movably mounted within the heat-insulating shell. Each movable block includes a pressing section and a pair of symmetrically distributed heating chambers. Both heating chambers are equipped with air supply pipes for supplying hot air. In this hot pressing device for nonwoven fabric processing, two staggered air supply pipes work together, heating the filaments in the fabric body. At this time, the hot air can pass through a partition and flow counterclockwise, circulating the hot air and ensuring sufficient heating of the filaments. Then, another set of two air supply pipes operates, causing the hot air to flow clockwise, further heating the filaments in the fabric body. This prevents insufficient heating of some filaments in the fabric body due to the hot air cooling down as it passes through the fabric.

Description

Technical Field

[0001] This invention relates to the field of nonwoven fabric processing technology, and more specifically to a hot pressing device for nonwoven fabric processing. Background Technology

[0002] Nonwoven fabric is a type of fabric made by bonding together oriented or random fibers. It has excellent water permeability and breathability, as well as unique resilience and flexibility, and therefore has a wide range of applications.

[0003] According to publication number CN111055579B, published on August 24, 2021, a hot press for nonwoven fabric processing is disclosed. Its structure includes a base, support plate, bracket, cylinder, guide rod, hot pressing structure, insulating plate, connecting body, and conduit. The bracket is L-shaped and invertedly mounted vertically on the top of the base. The cylinder is vertically mounted on the crossbar of the bracket, and its telescopic rod is connected to the insulating plate. The hot pressing structure is connected to the base via four sets of connecting bodies. The guide rod is divided into two parts and installed on the left and right sides of the cylinder. The device includes a smoothing mechanism in the middle of the heating plate. A steel ball is installed at the bottom of the actuating rod on the smoothing mechanism. The rotation of the actuating rod causes the steel ball to roll, flattening any bulging air pockets in the middle of the nonwoven fabric and preventing wrinkles from forming in the middle of the nonwoven fabric during hot pressing.

[0004] In existing technologies, including the aforementioned patents, the meltblown method for producing nonwoven fabric typically involves first melting the raw material, then pressing the molten material into a forming nozzle, which extrudes the material into fine filaments. These filaments are then sprayed onto predetermined locations, and a large number of filaments stack to form the nonwoven fabric. Nonwoven fabrics produced in this way have relatively loose fibers with large gaps between them, requiring extrusion to tighten the fiber bonds and increase the fabric's density. However, the temperature of the filaments gradually decreases after extrusion, necessitating reheating and re-extrusion. Most existing hot-pressing equipment heats only both sides of the nonwoven fabric, leaving the internal filaments insufficiently heated. During extrusion, only the surface filaments remelt and adhere, leaving the gaps between the internal filaments relatively large, and the fabric's density remains largely unchanged. Summary of the Invention

[0005] The purpose of this invention is to provide a hot pressing device for nonwoven fabric processing, which aims to solve the above-mentioned problems.

[0006] To achieve the above objectives, the present invention provides a hot pressing device for processing nonwoven fabrics, comprising a frame and a fabric body passing through the frame. Multiple hot pressing components are movably disposed on the frame. Each hot pressing component includes a heat-insulating shell symmetrically and movably mounted on the frame for clamping the fabric body, and a movable block movably mounted within the heat-insulating shell. Each movable block includes a pressing section and a pair of symmetrically distributed heating chambers. Each heating chamber is provided with a gas supply pipe for supplying hot gas. Two staggered gas supply pipes within the same hot pressing component constitute a group, wherein:

[0007] The two sets of gas pipes work alternately to allow hot gas to pass through the partition between the heating chambers and flow counterclockwise or clockwise between the two pairs of heating chambers, and the movable block moves to allow the extrusion section to compress the heated fabric.

[0008] Preferably, the partition is provided with two sets of one-way valves in opposite directions and a sealing plate for blocking either set of one-way valves.

[0009] Preferably, a first movable plate and a second movable plate are respectively provided in a pair of heating chambers, and the first movable plate and the second movable plate are respectively provided with air outlets that communicate with two air supply pipes.

[0010] Preferably, the first movable plate is provided with a support plate for supporting the fabric, and the first movable plate is moved to a predetermined position so that the support plate abuts against the fabric.

[0011] Preferably, the first movable plate has a channel communicating with the gas supply pipe, a plug is provided at the top of the channel, and a connecting post extending into the channel is provided on the support plate.

[0012] Preferably, a sealing ring for sealing the air outlet is slidably disposed on the first movable plate, and the first movable plate is moved to a predetermined position so that the plug block drives the sealing ring to move.

[0013] Preferably, the plug is provided with a receiving hopper for receiving hot air, and the first movable plate is provided with a plug for fixing the connecting column.

[0014] Preferably, the heat-insulating shell is provided with an arc-shaped groove, and the movable block moves along the arc-shaped groove to compress the heated fabric with the extrusion part.

[0015] Preferably, the interior of the insulation shell is slidably provided with a compression frame for squeezing the movable block toward the fabric.

[0016] Preferably, the frame is provided with a conveyor belt corresponding to the heating component and a guide groove for guiding the movement of the insulation shell, and the conveyor belt moves so that multiple hot pressing components alternately hot press the fabric.

[0017] In the above technical solution, the hot pressing device for nonwoven fabric processing provided by the present invention has the following beneficial effects: During operation, hot air enters two air supply pipes in the same group through two connecting pipes, and then enters the heating chamber through this group of air supply pipes. The upper air supply pipe sprays hot air downwards, and the hot air passes through the fabric and enters the lower heating chamber. The lower air supply pipe sprays hot air upwards, and the hot air passes through the fabric and enters the upper heating chamber. The two staggered air supply pipes work together, and the hot air heats the fine filaments in the fabric, and At this point, the hot air can pass through the partition and flow counterclockwise, allowing the hot air to circulate and fully heat the filaments in the fabric. Then, the two air pipes in another set work, causing the hot air to flow clockwise, further heating the filaments in the fabric. This prevents the filaments from being insufficiently heated due to the hot air cooling down as it passes through the fabric. After the heating process is completed, the two movable blocks in the hot pressing assembly move in their respective insulation shells. The squeezing parts on the two movable blocks work together to press the fabric, making the filaments in the fabric more tightly connected and increasing the density of the fabric. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0019] Figure 1 This is a schematic diagram of the overall structure provided in an embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of the internal structure provided in an embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of the guide groove provided in an embodiment of the present invention;

[0022] Figure 4 This is a schematic diagram of the internal structure of the heat insulation shell provided in an embodiment of the present invention;

[0023] Figure 5 This is a schematic diagram of the internal structure of an active block provided in an embodiment of the present invention;

[0024] Figure 6 for Figure 5 Enlarged view of point A in the middle;

[0025] Figure 7 for Figure 5 Enlarged view at point B in the middle;

[0026] Figure 8 This is a schematic diagram of the internal structure of the first movable plate provided in an embodiment of the present invention;

[0027] Figure 9 for Figure 8 Enlarged view at point C;

[0028] Figure 10 This is a schematic diagram of the external structure of the heat insulation shell provided in an embodiment of the present invention;

[0029] Figure 11 This is a schematic diagram of the counterclockwise flow of hot gas provided in an embodiment of the present invention;

[0030] Figure 12 This is a schematic diagram of a clockwise flow of hot gas provided in an embodiment of the present invention.

[0031] Explanation of reference numerals in the attached figures:

[0032] 1. Hot pressing assembly; 11. Insulation shell; 111. Guide block; 112. Chain; 113. Sprocket; 114. Gear; 116. Arc groove; 117. Gas supply pipe; 118. Connecting pipe; 119. Extrusion frame; 12. Movable block; 121. Heating chamber; 122. Partition plate; 123. One-way valve; 124. Extrusion section; 125. Sealing plate; 126. Second movable plate; 127. First cable; 128. Tenon rod; 131. First movable plate; 132. Support plate; 133. Connecting column; 134. Insert rod; 135. Sealing ring; 136. Second cable; 137. Plug; 138. Receiving hopper; 2. Frame; 21. Guide groove; 22. Conveyor belt; 23. First wedge; 24. First rack; 25. Second rack; 26. Second wedge. Detailed Implementation

[0033] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0034] like Figure 1-12 As shown, a hot pressing device for processing nonwoven fabric includes a frame 2 and a fabric body passing through the frame 2. Multiple hot pressing components 1 are movably arranged on the frame 2. Each hot pressing component 1 includes a heat-insulating shell 11 symmetrically and movably mounted on the frame 2 for clamping the fabric body, and a movable block 12 movably mounted in the heat-insulating shell 11. The movable block 12 includes a pressing part 124 and a pair of symmetrically distributed heating chambers 121. Each heating chamber 121 is provided with a gas supply pipe 117 for supplying hot gas. Two interlaced gas supply pipes 117 in the same hot pressing component 1 form a group.

[0035] Two sets of gas pipes 117 work alternately to allow hot gas to pass through the partition 122 between the heating chambers 121 and flow counterclockwise or clockwise between the two pairs of heating chambers 121. The movable block 12 moves to allow the extrusion section 124 to press the heated fabric.

[0036] Specifically, the insulation shell 11 is provided with a connecting pipe 118 that communicates with two air supply pipes 117. A partition is provided in the middle of the connecting pipe 118, and the partition is connected to two air pumps so that the two air supply pipes 117 can work alternately. Springs are provided between the first movable plate 131 and the movable block 12, and between the second movable plate 126 and the movable block 12. Hot air flows counterclockwise in the direction of... Figure 11 According to this, the hot air flows clockwise towards... Figure 12 For evidence.

[0037] Furthermore, the fabric in the above embodiments is specifically a non-woven fabric.

[0038] In the above technical solution, during operation, hot air enters the two gas supply pipes 117 in the same group through two connecting pipes 118, and then enters the heating chamber 121 through the group of gas supply pipes 117. The upper gas supply pipe 117 sprays hot air downwards, and the hot air passes through the fabric and enters the lower heating chamber 121. The lower gas supply pipe 117 sprays hot air upwards, and the hot air passes through the fabric and enters the upper heating chamber 121. The two staggered gas supply pipes 117 work together, and the hot air heats the fine filaments in the fabric. At this time, the hot air can pass through the partition. 122 The air flows counterclockwise, allowing the hot air to circulate and fully heat the filaments in the fabric. Then, the two air pipes 117 of another set work, causing the hot air to flow clockwise, further heating the filaments in the fabric. This prevents the filaments from being insufficiently heated due to the hot air cooling down as it passes through the fabric. After the heating process is completed, the two movable blocks 12 in the hot pressing assembly 1 move in their respective insulation shells 11. The squeezing parts 124 on the two movable blocks 12 work together to press the fabric, making the filaments in the fabric more tightly connected and increasing the density of the fabric.

[0039] As a further embodiment of the present invention, the partition 122 is provided with two sets of one-way valves 123 in opposite directions and a sealing plate 125 for blocking either set of one-way valves 123.

[0040] Specifically, the partition 122 is provided with a groove that matches the sealing plate 125. The bottom cross-section of the partition 122 is an isosceles trapezoid, which makes the contact area between the partition 122 and the fabric smaller. This makes it convenient to separate the two heating chambers 121 on the movable block 12, and will not block too much fabric, resulting in insufficient heating in the middle of the fabric. A spring is provided between the sealing plate 125 and the partition 122.

[0041] Furthermore, when hot air needs to flow clockwise, the sealing plate 125 moves along the groove on the partition plate 122, so that the sealing plate 125 blocks the counterclockwise flow of the one-way valve 123. At this time, the hot air can pass through the clockwise flow of the one-way valve 123, so that the hot air in the four heating chambers 121 of the two movable blocks 12 of a hot pressing assembly 1 flows clockwise, so that the hot air can fully heat the filaments in the fabric.

[0042] As a further embodiment of the present invention, a first movable plate 131 and a second movable plate 126 are respectively provided in a pair of heating chambers 121, and the first movable plate 131 and the second movable plate 126 are respectively provided with air outlets that communicate with two air supply pipes 117.

[0043] Specifically, when the hot air flows counterclockwise, the hot air enters the first movable plate 131 through the air supply pipe 117 on the first movable plate 131 and is ejected from the air outlet on the first movable plate 131 to heat the fabric. At the same time, the first movable plate 131 moves closer to the fabric, which increases the air pressure in the heating chamber 121 near the fabric, improving the ability of the hot air to pass through the intricate pores in the fabric so that the hot air can heat the fine filaments in the middle of the fabric.

[0044] As another embodiment of the present invention, a support plate 132 for supporting the fabric is provided on the first movable plate 131, and the first movable plate 131 is moved to a predetermined position so that the support plate 132 abuts against the fabric.

[0045] Specifically, after the hot air flows counterclockwise, the first movable plate 131 moves to the predetermined position and stops moving downward. At this time, the support plate 132 on the first movable plate 131 moves closer to the fabric and gradually supports it. Then the hot air flows clockwise and heats the fabric from the other side. The support plate 132 supports the fabric to prevent the hot air from the other side from excessively compressing the heated fabric, causing the fabric to stretch and wrinkle.

[0046] Furthermore, the support plate 132 in the above embodiments can be a porous breathable plate.

[0047] As another embodiment of the present invention, the first movable plate 131 has a channel communicating with the gas supply pipe 117, a plug 137 is provided at the top of the channel, and a connecting post 133 extending into the channel is provided on the support plate 132.

[0048] Specifically, a spring is provided between the plug 137 and the first movable plate 131, and a spring is provided between the connecting post 133 and the first movable plate 131.

[0049] Furthermore, as the first movable plate 131 moves closer to the fabric, the plug 137 seals the channel. At this time, the hot air input by the air supply pipe 117 can only enter the heating chamber 121 through the air outlet on the first movable plate 131 and come into contact with the fabric. When the first movable plate 131 moves to the predetermined position, the plug 137 moves, and the hot air input by the air supply pipe 117 comes into contact with the connecting column 133 through the channel on the first movable plate 131, and pushes the connecting column 133 and the support plate 132 to move, so that the support plate 132 gradually fits onto the fabric and supports the fabric.

[0050] As another embodiment of the present invention, a sealing ring 135 for sealing the air outlet is slidably disposed on the first movable plate 131. The first movable plate 131 is moved to a predetermined position so that the plug block 137 drives the sealing ring 135 to move.

[0051] Specifically, a spring is provided between the sealing ring 135 and the first movable plate 131, a second pull cable 136 is provided between the plug block 137 and the sealing ring 135, and a flow channel connecting the air outlet and the air supply pipe 117 is provided on the second movable plate 126.

[0052] Furthermore, during the movement of the plug 137, the plug 137 drives the sealing ring 135 to move via the second cable 136. The sealing ring 135 seals the flow channel in the first movable plate 131. At this time, the hot air input by the gas pipe 117 can only flow through the channel in the first movable plate 131, thereby pushing the connecting column 133 and the support plate 132 toward the fabric and gradually supporting the fabric.

[0053] As another embodiment of the present invention, the plug block 137 is provided with a receiving hopper 138 for receiving hot air, and the first movable plate 131 is provided with a plug rod 134 for fixing the connecting column 133.

[0054] Specifically, a spring is provided between the insertion rod 134 and the first movable plate 131, a groove adapted to the end of the insertion rod 134 is provided on the partition plate 122, a slope is provided at the bottom of the end of the insertion rod 134 near the partition plate 122, a slope is provided at the bottom of the end of the insertion rod 134 near the connecting post 133, and a groove adapted to the end of the insertion rod 134 is provided on the connecting post 133.

[0055] Furthermore, as the first movable plate 131 approaches the fabric, the receiving hopper 138 receives hot air and pushes the plug 137 a short distance. However, this does not allow the second cable 136 to drive the sealing ring 135 to close the flow channel in the first movable plate 131. Although the channel is open, the connecting post 133 is fixed to the first movable plate 131 by the insert rod 134. The hot air cannot push the connecting post 133 and the support plate 132 relative to the first movable plate 131. The first movable plate 131 continues to move, and the insert rod 134 gradually approaches the groove on the partition plate 122. When the first movable plate 131 moves to the predetermined position, the insert rod 134 is directly facing the groove on the partition plate 122. The insertion rod 134 is inserted into the groove on the partition plate 122 under the action of the spring. At this time, the insertion rod 134 is separated from the connecting column 133. The connecting column 133 and the support plate 132 can move closer to the fabric. The hot air pushes the receiving hopper 138 and the plug 137 to move. The hot air enters the channel on the first movable plate 131 and pushes the support plate 132 closer to the fabric. At this time, the moving space and moving range of the plug 137 are increased. It drives the sealing ring 135 through the second pull cable 136 to close the flow channel in the first movable plate 131. The hot air input by the air pipe 117 can only enter the channel and push the connecting column 133 and the support plate 132 to move. The support plate 132 gradually abuts against the fabric.

[0056] As another embodiment of the present invention, the heat insulation shell 11 is provided with an arc-shaped groove 116, and the movable block 12 moves along the arc-shaped groove 116 so that the pressing part 124 presses the heated fabric.

[0057] Specifically, the insulation shell 11 is provided with a chain 112, the movable block 12 is rotatably mounted on the chain 112, and the insulation shell 11 is provided with a sprocket 113 for driving the chain 112 to move.

[0058] Furthermore, after the heating process is completed, the sprocket 113 drives the chain 112 to move, which in turn drives the movable block 12 to move along the arc groove 116 on the insulation shell 11. As the movable block 12 moves away from the fabric along the arc groove 116, it separates from the fabric to protect it and prevent it from being torn. As the movable block 12 moves closer to the fabric along the arc groove 116, the squeezing part 124 of the movable block 12 squeezes the fabric at an angle. After contacting the fabric, the movable block 12 also moves laterally for a short distance, which can push down the protruding burrs on the fabric and re-bond the burrs to the fibers on the fabric, thereby improving the smoothness of the fabric surface.

[0059] As another embodiment of the present invention, the interior of the heat insulation shell 11 is slidably provided with a compression frame 119 for squeezing the movable block 12 toward the fabric. The frame 2 is provided with a conveyor belt 22 corresponding to the heating component and a guide groove 21 for guiding the movement of the heat insulation shell 11. The conveyor belt 22 moves so that multiple hot pressing components 1 alternately hot press the fabric.

[0060] Specifically, a spring is provided between the extrusion frame 119 and the insulation shell 11. The guide groove 21 is specifically a right trapezoid. A guide block 111 adapted to the guide groove 21 is provided on the insulation shell 11. The guide block 111 has a ramp adapted to the inclined part of the guide groove 21. A conveyor belt 22 for driving the insulation shell 11 to move is provided on the frame 2. Tenon rods 128 extending to the outside of the insulation shell 11 are provided on both the first movable plate 131 and the second movable plate 126. The frame 2 is respectively provided with a rod for pushing the first movable plate 131. The first wedge 23 for moving the tenon 128 on the upper plate 31 and the second wedge 26 for pushing the tenon 128 on the second movable plate 126 to move. The heat insulation shell 11 has a notch for moving the tenon 128. The sprocket 113 is equipped with a gear 114. The frame 2 is equipped with a first rack 24 and a second rack 25 that are respectively arranged in an alternating manner. The first rack 24 and the second rack 25 respectively mesh with the top and bottom of the gear 114. A first cable 127 is provided between the first movable plate 131 and the sealing plate 125.

[0061] Furthermore, during operation, the two ends of the fabric are fixed by rollers and move from the frame 2 under the drive of the rollers. The conveyor belt 22 drives the insulation shell 11 to move along the inclined part of the guide groove 21 through the guide block 111, and gradually enters the horizontal part of the guide groove 21 below. The insulation shell 11 and the movable block 12 move closer to the fabric. The two insulation shells 11 in the same hot pressing assembly 1 cooperate to clamp the fabric and form a closed space. The movable block 12 cooperates to clamp and squeeze the fabric. At this time, the moving direction and moving speed of the hot pressing assembly 1 and the fabric are the same. The connecting pipe 118 inputs hot air into the air supply pipe 117 on the first movable plate 131, and the first wedge 23 pushes the tenon 128 on the first movable plate 131 to push the first movable plate 131 closer to the fabric. The hot air passes through the fabric and heats the filaments in the fabric. The hot air flows counterclockwise in the four heating chambers 121 to further heat the fabric. The fine filaments in the fabric gradually decrease in distance between the first movable plate 131 and the sealing plate 125. The first cable 127 is released. When the first movable plate 131 moves to the predetermined position, the support plate 132 is unlocked. The sealing plate 125 seals the counterclockwise flow of the one-way valve 123. The hot pressing assembly 1 continues to move. The first wedge 23 remains in contact with the tenon 128 on the first movable plate 131. The tenon 128 on the second movable plate 126 gradually contacts the second wedge 26. The second wedge 26 pushes the second movable plate 126 closer to the fabric. At the same time, the connecting pipe 118 delivers hot air to the two air supply pipes 117. The air supply pipe 117 on the first movable plate 131 pushes the support plate 132 to move to support the fabric. The second movable plate 126 pressurizes its corresponding heating chamber 121, so that the hot air in the four heating chambers 121 flows clockwise, further heating the fine filaments in the fabric.

[0062] After the heating process is completed, the gas pipe 117 stops supplying hot gas. The connecting column 133 and the support plate 132 move away from the fabric under the action of the spring until the insertion rod 134 is aligned with the groove on the connecting column 133. The plug 137 re-seals the channel on the first movable plate 131, the second cable 136 loosens, the sealing ring 135 moves relative to the first movable plate 131, the flow channel in the first movable plate 131 reopens, the first wedge 23 separates from the tenon 128 on the first movable plate 131, and the second wedge 26 separates from the second... The tenon 128 on the movable plate 126 separates, and the first movable plate 131 and the second movable plate 126 move away from the fabric under the action of the spring. The ramp on the insertion rod 134 abuts against the side wall of the groove of the partition plate 122 and gradually retracts into the first movable plate 131. The end of the insertion rod 134 is inserted into the connecting post 133, fixing the connecting post 133 on the first movable plate 131. The first movable plate 131 pulls the sealing plate 125 to move through the first pull cable 127. The sealing plate 125 seals the clockwise flow of the one-way valve 123.

[0063] As the hot pressing assembly 1 continues to move, gear 114 contacts the first rack 24, which in turn drives gear 114 to rotate. Gear 114 then drives chain 112 to move via sprocket 113, which in turn drives movable block 12 to move along arc groove 116. Extrusion frame 119 pushes the extrusion part 124 of movable block 12 to extrude the fabric. Then, gear 114 separates from the first rack 24 and contacts the second rack 25. The second rack 25 drives gear 114 to rotate in the opposite direction, which in turn drives movable block 12 to move in the opposite direction along arc groove 116. Then, conveyor belt 22 drives insulation shell 11 to move away from the fabric and back to the initial position along guide groove 21. This part of the fabric hot pressing is completed. Then, multiple subsequent hot pressing assemblies 1 work in sequence to uniformly hot press all parts of the fabric, increasing the fabric density.

[0064] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A hot pressing device for processing nonwoven fabrics, characterized in that, The device includes a frame and a fabric passing through the frame. Multiple hot-pressing assemblies are movably mounted on the frame. Each hot-pressing assembly includes a heat-insulating shell symmetrically and movably mounted on the frame for clamping the fabric, and a movable block movably mounted within the heat-insulating shell. Each movable block includes a pressing section and a pair of symmetrically distributed heating chambers. Each heating chamber is provided with a gas supply pipe for supplying hot air. Two staggered gas supply pipes within the same hot-pressing assembly form a group. The two sets of gas pipes work alternately to allow hot gas to pass through the partition between the heating chambers and flow counterclockwise or clockwise between the two pairs of heating chambers; the movable block moves to allow the extrusion section to press the heated fabric. The partition is provided with two sets of one-way valves in opposite directions and a sealing plate for blocking either set of one-way valves. A first movable plate and a second movable plate are respectively provided in a pair of heating chambers, and the first movable plate and the second movable plate are respectively provided with air outlets that communicate with two air supply pipes; The frame is provided with a conveyor belt corresponding to the heating component and a guide groove for guiding the movement of the insulation shell. The conveyor belt moves so that multiple hot pressing components alternately hot press the fabric.

2. The hot pressing device for nonwoven fabric processing according to claim 1, characterized in that, The first movable plate is provided with a support plate for supporting the fabric. The first movable plate is moved to a predetermined position so that the support plate abuts against the fabric.

3. The hot pressing device for nonwoven fabric processing according to claim 2, characterized in that, The first movable plate has a channel communicating with the gas supply pipe, a plug is provided at the top of the channel, and a connecting post extending into the channel is provided on the support plate.

4. The hot pressing device for nonwoven fabric processing according to claim 3, characterized in that, A sealing ring for sealing the air outlet is slidably disposed on the first movable plate. The first movable plate moves to a predetermined position so that the plug block drives the sealing ring to move.

5. A hot pressing device for nonwoven fabric processing according to claim 3, characterized in that, The plug is provided with a receiving hopper for receiving hot air, and the first movable plate is provided with a plug for fixing the connecting column.

6. The hot pressing device for nonwoven fabric processing according to claim 1, characterized in that, The heat-insulating shell has an arc-shaped groove, and the movable block moves along the arc-shaped groove to compress the heated fabric with the extrusion part.

7. A hot pressing device for nonwoven fabric processing according to claim 1, characterized in that, The interior of the insulation shell is equipped with a compression frame for squeezing the movable block toward the fabric.

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