Drying equipment for water-based synthetic leather production

Abstract

The invention relates to the technical field of drying, and particularly discloses a drying device for water-based synthetic leather production, which comprises a support, the support is placed on the ground, the outer surface of the upper end of the support is fixedly connected with a drying oven for drying the upper surface of synthetic leather and a preheating zone, the preheating zone is located at the front end of the drying oven, and the drying oven and the preheating zone are communicated with each other. The preheating area is fixedly connected to the outer surface of the upper end of the support, the preheating area dries the outer surface of the lower end of the synthetic leather, the preheating area comprises an electric heating plate, the preheating area is arranged at the front end of the drying oven, and the electric heating plate is adopted to heat the bottom of the water-based synthetic leather before hot air drying is conducted on the water-based synthetic leather through the drying oven; through a bottom-to-top heating mode, bubbles generated at the bottom of the water-based synthetic leather due to top-to-bottom heating are avoided, through the structure, the size of the whole drying equipment can be reduced, and the drying efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of drying, in particular to drying equipment for producing water-based synthetic leather. Background Art

[0002] Water-based synthetic leather is an environmentally friendly artificial leather, which is made of textile substrate or non-textile substrate and water-based polyurethane resin through coating or impregnation. It uses water as solvent, replacing the organic solvent in traditional synthetic leather production, and has good environmental and health performance. The main raw material of water-based synthetic leather is water-based polyurethane resin. This resin uses water as the dispersion medium and does not contain toxic or harmful chemical solvents. What evaporates into the atmosphere during the leather making process is basically water vapor. The production process of water-based synthetic leather mainly includes the following steps: centralized procurement preparation, coating and drying qualitative and post-processing;

[0003] Existing drying equipment often adopts thermal radiation drying, hot air drying, infrared drying and comprehensive drying equipment. Because the drying mostly directly heats the surface of water-based synthetic leather to force water vapor out from the inside of the synthetic leather, in order to avoid bubbles between the synthetic leather and the release paper due to water vapor, it is necessary to dry in steps and gradually heat up, which leads to a long length of the entire drying equipment and a slow heating rate;

[0004] Therefore, we propose a drying equipment for producing water-based synthetic leather. Summary of the invention

[0005] The purpose of the present invention is to provide a drying device for producing water-based synthetic leather to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a drying device for producing water-based synthetic leather, comprising a bracket, the bracket being placed on the ground, the upper end outer surface of the bracket being fixedly connected to an oven for drying the upper surface of the synthetic leather,

[0007] A preheating zone, the preheating zone is located at the front end of the oven, the oven and the preheating zone are interconnected, and the preheating zone is also fixedly connected to the outer surface of the upper end of the bracket, the preheating zone dries the outer surface of the lower end of the synthetic leather, and the preheating zone includes an electric heating plate;

[0008] The number of the electric heating plates is several groups, and they are neatly arranged with each other. Several groups of electric heating plates can be controlled individually. The front end outer surface of the preheating zone is provided with a tensioning assembly, and the tensioning assembly increases the stability of the synthetic leather when the electric heating plates are controlled individually.

[0009] The preheating zone further comprises a limiting frame, both left and right ends of which are fixedly connected to the bracket, and several groups of heating plates are located in the middle area of ​​the limiting frame. The electric heating plates are completely in the shape of long strips and are distributed in left and right arrays.

[0010] Among them, a sensing groove is provided on the outer surface of the upper end of the limiting frame near the front end, a sensing block is slidably connected inside the sensing groove, a spring 1 is fixedly connected between the outer surface of the lower end of the sensing block and the sensing groove, and conductive grooves are provided at both the front and rear ends of the sensing block, and conductive blocks 1 and 2 are fixedly connected at corresponding positions of the sensing groove and the conductive groove, respectively, and conductive block 1 and conductive block 2 are respectively in contact with the front conductive groove and the rear conductive groove on the surface of the sensing block, and conductive block 2 is electrically connected to the heating plate, and a negative pressure component is provided on the outer surface of the lower end of the limiting frame to increase the contact strength between the release paper and the heating plate.

[0011] The distance between the first conductive block and the bottom of the sensing slot is greater than the distance between the second conductive block and the bottom of the sensing slot, and reserved slots are provided on both sides of the sensing block.

[0012] Wherein, the tensioning assembly includes a slide groove, which is opened on the outer surface of the front end of the limiting frame. A slider is slidably connected inside the slide groove, and the end of the slider away from the slide groove is connected to a tensioning plate for clamping and tightening the release paper.

[0013] Among them, a guide groove is opened inside the inner surface of the slide groove on one side close to the center of the limiting frame, several groups of sensing blocks correspond to the length of the slide groove, and the corresponding sensing blocks are opened with through-slots, the guide groove corresponds to the through-slots of one group of sensing blocks, the through-slots are designed as an L-shaped mechanism, and the other through-slots are designed as straight lines, and the inner surface of the sensing groove is opened with a fixing groove at a position corresponding to the through-slots, and a traction rope passes through the through-slots, the fixing grooves and the guide grooves, one end of the traction rope is fixedly connected to the slider and the other end is fixedly connected to the inner wall of the sensing groove at the edge.

[0014] Among them, the through-slot is aligned with the reserved slot on the outer surface of the sensing block, a spring 2 is fixedly connected between the sliding block and the sliding slot, the outer surface of the tensioning plate is rotatably connected to the rotating wheel 1 through a rotating shaft, a guide slot is provided on the outer surface of the tensioning plate and the corresponding position of the rotating wheel 1, a guide block is slidably connected inside the guide slot, and the end of the guide block away from the guide slot is rotatably connected to the rotating wheel 2 through a rotating shaft, a through hole is provided through the upper end of the inner surface of the guide slot, a through rod is slidably connected inside the through hole, the lower end of the through rod is fixedly connected to the guide block, and the outer surface of the upper end of the through rod is more connected to a connecting plate, the side of the tensioning plate away from the guide slot is fixedly connected to an electromagnet, the outer surface of the upper end of the through rod is fixedly connected to a connecting plate made of a magnet, and a spring 3 is fixedly connected between the connecting plate and the upper end of the tensioning plate.

[0015] Among them, one end of the connecting plate away from the tensioning plate is fixedly connected to the extension plate, and the outer surface of the extension plate is also rotatably connected to the rotating wheel three through the rotating shaft, and the rotating wheel three is aligned with the rotating wheel two.

[0016] Among them, gaps are left between several groups of the electric heating plates, and the negative pressure component includes a horizontal plate, which corresponds to the limiting frame and is located at the lower end of the limiting frame, and the two are fixedly connected. An empty groove due to the elliptical structure design is opened in the middle area of ​​the horizontal plate, and a fan is arranged inside the empty groove. A driven wheel is fixedly connected to the outer surface of the lower end of the fan blade, and the driven wheel is rotatably connected to the bracket through a connecting rod. A driving wheel is arranged in the central area of ​​the empty groove, and a motor is arranged at the lower end of the driving wheel, which is fixedly connected to the output end of the motor, and a synchronous belt is sleeved on the annular outer surfaces of the driving wheel and the driven wheel.

[0017] The present invention has at least the following beneficial effects:

[0018] By setting a preheating zone at the front end of the oven, before the water-based synthetic leather is dried by hot air in the oven, an electric heating plate is used to heat the bottom of the water-based synthetic leather, so that the water vapor at the bottom of the water-based synthetic leather is quickly drained, and the bottom-up heating method is used to avoid the formation of bubbles at the bottom of the water-based synthetic leather caused by top-down heating. The above structure can reduce the size of the gears of the entire drying equipment and improve the drying efficiency.

[0019] By setting a tensioning component and using a plurality of groups of electric heating plates to cooperate, the electric heating plates can be controlled individually, so as to meet the heating of release papers of different sizes, which can greatly reduce energy loss. The individual electric heating plates are controlled by the cooperation of the induction slot and the induction block as well as the conductive block 1, the conductive block 2 and the conductive slot;

[0020] The release paper is compressed by the action of the electromagnet, the first wheel and the second wheel to keep the release paper in a taut state. The fixed groove adopts an immovable method. When the sensing block moves downward along the sensing groove, the traction rope presents a wavy shape as a whole, thereby increasing the length inside the sensing groove, and indirectly pulling the slider to move toward the center of the limiting frame, so that the tensioning plate can be adjusted according to the width of the release paper, thereby meeting the needs of holding and pressing release papers of different widths. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a structural schematic diagram of the preheating zone of the present invention;

[0023] Figure 3 It is a schematic diagram of the structure of the negative pressure assembly of the present invention;

[0024] Figure 4 It is a structural schematic diagram of the induction block and the induction slot of the present invention;

[0025] Figure 5 It is a schematic diagram of the structure of several groups of induction slots of the present invention;

[0026] Figure 6 It is a structural schematic diagram of the slideway and the traction rope of the present invention;

[0027] Figure 7 It is a structural schematic diagram of the insertion slot and the traction rope of the present invention;

[0028] Figure 8 For the present invention Figure 7 The enlarged structural diagram at A in the middle;

[0029] Fig. 9 This is a schematic diagram of the explosion structure of the preheating zone of the present invention;

[0030] Fig.10 It is a structural schematic diagram of the tensioning assembly of the present invention;

[0031] Fig.11 It is a schematic diagram of the explosion structure of the negative pressure assembly of the present invention.

[0032] In the figure: 1, bracket; 11, oven; 2, preheating zone; 20, limit frame; 21, electric heating plate; 22, induction block; 23, conductive block 1; 24, conductive block 2; 25, induction slot; 251, spring 1; 26, conductive slot; 27, through slot; 28, reserved slot; 29, alignment slot; 3, tensioning assembly; 30, slide slot; 31, slider; 32, traction rope; 34, extension plate; 35, guide slot ; 36. Spring 2; 37. Tension plate; 38. Connecting plate; 39. Electromagnet; 40. Guide groove; 41. Perforation; 42. Spring 3; 43. Rotor 1; 44. Through rod; 45. Guide block; 46. Rotor 246; 47. Rotor 347; 5. Negative pressure assembly; 50. Horizontal plate; 51. Empty groove; 52. Driving wheel; 53. Motor; 54. Driven wheel; 55. Fan blade; 56. Synchronous belt. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] Embodiment 1

[0035] See also Figure 1-11 The present invention provides a technical solution: a drying device for producing water-based synthetic leather, comprising a bracket 1, the bracket 1 is placed on the ground, and an oven 11 for drying the upper surface of the synthetic leather is fixedly connected to the outer surface of the upper end of the bracket 1.

[0036] A preheating zone 2, the preheating zone 2 is located at the front end of the oven 11, the oven 11 and the preheating zone 2 are interconnected, and the preheating zone 2 is also fixedly connected to the outer surface of the upper end of the bracket 1, the preheating zone 2 dries the outer surface of the lower end of the synthetic leather, and the preheating zone 2 includes an electric heating plate 21, through which the release paper coated with the synthetic leather can be directly heated. Since the heating direction is at the bottom of the synthetic leather, the water vapor at the bottom of the synthetic leather can be quickly reduced, so as to avoid the water vapor at the bottom of the synthetic leather from being blocked by the release paper when the oven 11 dries the surface of the synthetic leather, resulting in poor discharge of water vapor and bubbles, thereby improving the yield rate and the drying efficiency;

[0037] The number of the electric heating plates 21 is several groups, and they are neatly arranged with each other. Several groups of electric heating plates 21 can be controlled individually. The front end outer surface of the preheating zone 2 is provided with a tensioning component 3. When the electric heating plate 21 is controlled individually, the tensioning component 3 increases the stability of the synthetic leather during movement. The electric heating plate 21 can be controlled individually, which is beneficial to control the heating area to meet the needs of release papers of different specifications, and the entire electric heating area is divided into parts. Changing the heating with a separate electric heating plate 21 is beneficial to maintaining the uniformity of the heating temperature.

[0038] The preheating zone 2 also includes a limiting frame 20, the left and right ends of the limiting frame 20 are fixedly connected to the bracket 1, and several groups of heating plates are located in the middle area of ​​the limiting frame 20. The electric heating plates 21 are completely long strips and are distributed in left and right arrays.

[0039] The upper outer surface of the limiting frame 20 near the front end is provided with an induction groove 25, the number of the induction grooves 25 is consistent with the number of the electric heating plate 21, and the width is consistent, the induction groove 25 is slidably connected with the induction block 22, and a spring 251 is fixedly connected between the lower outer surface of the induction block 22 and the induction groove 25, and the spring 251 can reset the induction block 22, and the front and rear ends of the induction block 22 are provided with a conductive groove 26, and the corresponding positions of the induction groove 25 and the conductive groove 26 are respectively fixedly connected with a conductive block 23 and a conductive block 24, and the conductive groove 25 is fixedly connected with the conductive block 23 and the conductive block 24. The conductive block 1 23 and the conductive block 24 are in contact with the front conductive groove 26 and the rear conductive groove 26 on the surface of the sensing block 22 respectively. The conductive block 24 is electrically connected to the electric heating plate 21. The outer surface of the lower end of the limiting frame 20 is provided with a negative pressure component 5 for increasing the contact strength between the release paper and the electric heating plate 21. When facing release papers of different specifications, the release papers are pressed on the surfaces of several groups of sensing blocks 22, and the sensing blocks 22 slide downward along the sensing grooves 25 until the conductive block 1 23 and the conductive block 24 are in contact with the conductive grooves 26. At this time, the electric heating plate 21 corresponding to the sensing grooves 25 is energized.

[0040] The distance between the conductive block 1 23 and the bottom of the sensing slot 25 is greater than the distance between the conductive block 24 and the bottom of the sensing slot 25. Reserved slots 28 are provided on the left and right sides of the sensing block 22. The conductive block 1 23 is always in contact with the sensing block 22, but the conductive slot 26 on the surface can only contact with the conductive block 2 24 after the sensing block 22 moves downward. The downward movement of the sensing block 22 is squeezed by the release paper, the surface of the release paper is coated with water-based synthetic leather, and the release paper is pulled by the transport roller in a taut state. This is the prior art and will not be elaborated. The conductive slot 26 has a conductive metal built in, and the sensing block 22 itself is made of resin material. The conductive block 1 23 is electrically connected to the conductive slot 26, and the conductive block 1 23 is electrically connected to the external power supply.

[0041] The tensioning assembly 3 includes a slide groove 30, which is opened on the outer surface of the front end of the limiting frame 20. A slider 31 is slidably connected inside the slide groove 30. The end of the slider 31 away from the slide groove 30 is connected to a tensioning plate 37 for clamping and tightening the release paper. The tensioning plate 37 can slide along the slide groove 30 through the slider 31, so as to be adjusted according to the width of the release paper, ensuring that the release paper can be compressed and the release paper is also in a tight state horizontally, which is more conducive to the triggering of the sensor block 22.

[0042] A guide groove 35 is provided inside the inner surface of the slide groove 30 near the center of the limiting frame 20. Several groups of sensing blocks 22 correspond to the length of the slide groove 30, and a through-slot 27 is provided inside the corresponding sensing block 22. The guide groove 35 corresponds to the through-slot 27 of one group of sensing blocks 22. The through-slot 27 is designed as an L-shaped mechanism, and the other through-slots 27 are designed as straight lines. A positioning groove 29 is provided on the inner surface of the sensing groove 25 at a position corresponding to the through-slot 27. A traction rope 32 is passed through the through-slot 27, the positioning groove 29 and the guide groove 35. One end of the traction rope 32 is fixedly connected to the slider 31, and the other end is fixedly connected to the inner wall of the sensing groove 25 at the edge. Fixed connection, when several groups of sensor blocks 22 are squeezed by the release paper and move downward, since the sensor slot 25 is in a stationary state, the internal alignment slot 29 is misaligned with the through slot 27 on the surface of the sensor block 22, and the internal traction rope 32 is also misaligned, thereby increasing the length of the traction rope 32 inside the sensor slot 25, forcing the sensor slot 25 to pull the slider 31 to move toward the center of the limiting frame 20. The distance between the slider 31 and the tensioning plate 37 and the center of the limiting frame 20 is proportional to the number of sensor blocks 22 under pressure. The traction rope 32 is arranged in a C shape as a whole, and the C-shaped opening is facing the limiting frame 20. Spring 2 36 provides traction for the slider 31 to reset.

[0043] The through slot 27 is aligned with the reserved slot 28 on the outer surface of the induction block 22, and the traction rope 32 can be embedded in the reserved slot 28, wherein the traction rope 32 passing through the L-shaped through slot 27 can be folded into the conductive slot 26, and a spring 2 36 is fixedly connected between the slider 31 and the slide slot 30, and the outer surface of the tensioning plate 37 is rotatably connected to a rotating wheel 1 43 through a rotating shaft, and a guide slot 40 is provided at a position corresponding to the outer surface of the tensioning plate 37 and the rotating wheel 1 43, and a guide block 45 is slidably connected to the inside of the guide slot 40, and the end of the guide block 45 away from the guide slot 40 is rotatably connected to the rotating wheel 2 4646 through a rotating shaft, and a through hole 41 is provided through the upper end of the inner surface of the guide slot 40, and a through rod 44 is slidably connected to the inside of the through hole 41, and the through rod 44 The lower end is fixedly connected to the guide block 45, and the upper outer surface of the penetration rod 44 is more connected with a connecting plate 38. The side of the tensioning plate 37 away from the guide groove 40 is fixedly connected with an electromagnet 39. The upper outer surface of the penetration rod 44 is fixedly connected with a connecting plate 38 made of a magnet. A spring three 42 is fixedly connected between the connecting plate 38 and the upper end of the tensioning plate 37. The release paper passes through the gap between the rotating wheel 1 43 and the rotating wheel 2 46. Then the electromagnet 39 is energized to adsorb the connecting plate 38, forcing the connecting plate 38 to compress the spring three 42 and move downward. The connecting plate 38 drives the rotating wheel 2 46 to move downward through the penetration rod 44 and the guide block 45 to clamp the release paper, thereby reducing the curling of the release paper when the pressure sensing block 22 is pressed down, and increasing the stability of the overall structure.

[0044] The end of the connecting plate 38 away from the tensioning plate 37 is fixedly connected to the extension plate 34, and the outer surface of the extension plate 34 is also rotatably connected to the rotating wheel 3 47 through a rotating shaft. The rotating wheel 3 47 is aligned with the rotating wheel 2 46. In order to further reduce the curling of the release paper, the extension plate 34 is connected to the rear end of the connecting plate 38 to continue to press the release paper onto the surface of the electric heating plate 21 through the rotating wheel 3 47.

[0045] Embodiment 2

[0046] There are gaps between the groups of electric heating plates 21. The negative pressure assembly 5 includes a transverse plate 50. The transverse plate 50 corresponds to the limiting frame 20 and is located at the lower end of the limiting frame 20. The two are fixedly connected. The middle area of ​​the transverse plate 50 is provided with an empty groove 51 designed due to an elliptical structure. The design of the empty groove 51 is conducive to concentrating the suction force. A fan is arranged inside the empty groove 51. The lower end outer surface of the fan blade 55 is fixedly connected to a driven wheel 54. The driven wheel 54 is rotatably connected to the bracket 1 through a connecting rod. The empty groove 51 A driving wheel 52 is provided in the central area, a motor 53 is provided at the lower end of the driving wheel 52 and fixedly connected to the output end of the motor 53, a synchronous belt 56 is sleeved on the annular outer surface of the driving wheel 52 and the driven wheel 54, when the electric heating plate 21 is started, the motor 53 drives the driving wheel 52 to drive the synchronous belt 56 to force the fan blades 55 to rotate, and the negative pressure generated by the gap and the fan blades 55 adsorbs the release paper on the surface of the electric heating plate 21, ensuring that the release paper fits the electric heating plate 21, and the diameter of the driven wheel 54 is smaller than the diameter of the driving wheel 52.

[0047] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A drying device for producing water-based synthetic leather, comprising a bracket (1), the bracket (1) being placed on the ground, the upper end outer surface of the bracket (1) being fixedly connected to an oven (11) for drying the upper surface of the synthetic leather, characterized in that: A preheating zone (2), the preheating zone (2) being located at the front end of the oven (11), the oven (11) and the preheating zone (2) being interconnected, and the preheating zone (2) being also fixedly connected to the upper outer surface of the support (1), the preheating zone (2) drying the lower outer surface of the synthetic leather, the preheating zone (2) comprising an electric heating plate (21); The number of the electric heating plates (21) is several groups, and they are arranged neatly with each other. Several groups of electric heating plates (21) can be controlled individually. The front end outer surface of the preheating zone (2) is provided with a tensioning assembly (3). When the electric heating plates (21) are controlled individually, the tensioning assembly (3) increases the stability of the synthetic leather when it moves.

2. The drying equipment for producing water-based synthetic leather according to claim 1, characterized in that: The preheating zone (2) further comprises a limiting frame (20), the left and right ends of which are fixedly connected to the bracket (1), a plurality of groups of heating plates are located in the middle area of ​​the limiting frame (20), and the electric heating plates (21) are in the shape of long strips and are distributed in a left and right array.

3. The drying equipment for producing water-based synthetic leather according to claim 2, characterized in that: The upper outer surface of the limiting frame (20) near the front end is provided with a sensing groove (25), and a sensing block (22) is slidably connected inside the sensing groove (25). A spring 1 (251) is fixedly connected between the lower outer surface of the sensing block (22) and the sensing groove (25). The front and rear ends of the sensing block (22) are provided with conductive grooves (26). The corresponding positions of the sensing groove (25) and the conductive groove (26) are respectively fixedly connected with a conductive block 1 (23) and a conductive block 2 (24). The conductive block 1 (23) and the conductive block 2 (24) are respectively in contact with the front conductive groove (26) and the rear conductive groove (26) on the surface of the sensing block (22). The conductive block 2 (24) is electrically connected to the electric heating plate (21). The lower outer surface of the limiting frame (20) is provided with a negative pressure component (5) for increasing the contact strength between the release paper and the electric heating plate (21).

4. The drying equipment for producing water-based synthetic leather according to claim 3, characterized in that: The distance between the conductive block 1 (23) and the bottom of the sensing slot (25) is greater than the distance between the conductive block 2 (24) and the bottom of the sensing slot (25), and reserved slots (28) are provided on both left and right sides of the sensing block (22).

5. The drying equipment for producing water-based synthetic leather according to claim 3, characterized in that: The tensioning assembly (3) includes a slide groove (30), the slide groove (30) is opened on the front end outer surface of the limiting frame (20), a slider (31) is slidably connected inside the slide groove (30), and the end of the slider (31) away from the slide groove (30) is connected to a tensioning plate (37) for clamping and tightening the release paper.

6. The drying equipment for producing water-based synthetic leather according to claim 5, characterized in that: A guide groove (35) is provided on one side of the inner surface of the slide groove (30) near the center of the limiting frame (20). Several groups of sensing blocks (22) have a length corresponding to that of the slide groove (30), and corresponding sensing blocks (22) have a through-slot (27) provided therein. The guide groove (35) corresponds to the through-slot (27) of one group of sensing blocks (22). The through-slot (27) is designed as an L-shaped structure, and the other through-slots (27) are designed as straight lines. A positioning groove (29) is provided on the inner surface of the sensing groove (25) at a position corresponding to the through-slot (27). A traction rope (32) is passed through the through-slot (27), the positioning groove (29) and the guide groove (35). One end of the traction rope (32) is fixedly connected to the slider (31) and the other end is fixedly connected to the inner wall of the sensing groove (25) at the edge.

7. The drying equipment for producing water-based synthetic leather according to claim 6, characterized in that: The through slot (27) is aligned with the reserved slot (28) on the outer surface of the induction block (22); a spring 2 (36) is fixedly connected between the slider (31) and the slide slot (30); the outer surface of the tensioning plate (37) is rotatably connected to a rotating wheel 1 (43) via a rotating shaft; a guide slot (40) is provided at a position corresponding to the outer surface of the tensioning plate (37) and the rotating wheel 1 (43); a guide block (45) is slidably connected inside the guide slot (40); an end of the guide block (45) away from the guide slot (40) is rotatably connected to a rotating wheel 2 (46) via a rotating shaft; the guide slot (40) A through hole (41) is provided through the upper end of the inner surface, a through rod (44) is slidably connected inside the through hole (41), the lower end of the through rod (44) is fixedly connected to the guide block (45), the upper end outer surface of the through rod (44) is fixedly connected to a connecting plate (38), the side of the tensioning plate (37) away from the guide groove (40) is fixedly connected to an electromagnet (39), the upper end outer surface of the through rod (44) is fixedly connected to a connecting plate (38) made of a magnet, and a spring three (42) is fixedly connected between the connecting plate (38) and the upper end of the tensioning plate (37).

8. The drying equipment for producing water-based synthetic leather according to claim 7, characterized in that: One end of the connecting plate (38) away from the tensioning plate (37) is fixedly connected to an extension plate (34), and the outer surface of the extension plate (34) is also rotatably connected to a rotating wheel (47) via a rotating shaft, and the rotating wheel (47) is aligned with the rotating wheel (46).

9. The drying equipment for producing water-based synthetic leather according to claim 2, characterized in that: Gaps are left between the groups of electric heating plates (21). The negative pressure assembly (5) comprises a transverse plate (50), the transverse plate (50) corresponds to the limiting frame (20), and the transverse plate (50) is located at the lower end of the limiting frame (20), and the two are fixedly connected. An empty slot (51) with an elliptical structure design is provided in the middle area of ​​the transverse plate (50), and a fan is provided inside the empty slot (51). A driven wheel (54) is fixedly connected to the outer surface of the lower end of the fan blade (55), and the driven wheel (54) is rotatably connected to the bracket (1) through a connecting rod. A driving wheel (52) is provided in the central area of ​​the empty slot (51), and a motor (53) is provided at the lower end of the driving wheel (52), and the driving wheel (52) is fixedly connected to the output end of the motor (53). The annular outer surfaces of the driving wheel (52) and the driven wheel (54) are sleeved with a synchronous belt (56).

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