A high-cushioning modified polyurethane insole sheet and its preparation process

Abstract

The present invention discloses a high-cushioning modified polyurethane insole sheet and a preparation process, comprising a conveyor belt, a forming mechanism and a demoulding mechanism provided on the conveyor belt, the forming mechanism comprising a fixed frame, a through groove provided in the fixed frame, two cutting plates provided on the bottom surface of the fixed frame, the cutting plates being located on both sides of the through groove, an upper template and a lower template provided in the through groove, the upper template and the lower template being welded and connected by a connecting plate, a gate groove provided on the upper template, and a cutting ring provided at the bottom of the gate groove, the demoulding mechanism comprising a push plate, a group of guide rods welded and connected on the side of the push plate, and the guide rods pass through the vertical plates and are slidably connected to the vertical plates. The waste cutting and demoulding of the present invention can be carried out in sequence without interfering with each other, thereby ensuring the rapid cutting of scraps, and the demoulding mechanism will not damage the surface flatness of the upper template and the lower template, so that no scraps of the remaining parts will exist after the insole is formed, which is beneficial to product quality.

Description

Technical Field

[0001] The invention relates to the technical field of polyurethane insole preparation, and in particular to a high-cushioning modified polyurethane insole sheet and a preparation process thereof. Background Art

[0002] Polyurethane has been widely used in the production of insoles due to its excellent resilience and good mechanical properties. To further improve the elasticity of polyurethane, the prior art (CN113150533A) discloses a polyurethane foam insole and a preparation method thereof. The insole has excellent resilience by adding a certain proportion of auxiliary materials to the raw materials. The insole is prepared by injecting the mixed raw materials into a mold, and the raw materials are formed in the mold.

[0003] For example, the prior art (CN112497616B) discloses a polyurethane foaming system, which uses a cutting blade to cut the scraps of the product after demoulding, and simultaneously uses a horizontal rod to push the product out of the mold cavity to achieve automatic demoulding. However, since the cutting blade and the horizontal rod are in a synchronous moving state, that is, when the cutting blade moves upward to cut the scraps of the product, the product will be pushed up by the horizontal rod. In this way, the product and the cutting blade move upward synchronously, and the cutting blade cannot cut the scraps of the product.

[0004] Moreover, the setting of the horizontal rod makes the bottom wall of the foaming bottom mold uneven, and there will be a gap between the foaming bottom mold and the horizontal rod. As a result, after demoulding, it is easy to cause scraps at the bottom of the product, which is not conducive to product quality.

[0005] At the same time, in order to facilitate demoulding, the lubricating oil is sprayed on the inner wall of the foaming bottom mold 1. The spraying method not only increases the lubricating oil consumption, but also cannot ensure that the lubricating oil is evenly distributed on the inner wall of the foaming bottom mold.

[0006] In view of the defects in the above-mentioned prior art, it is necessary to further improve it to make it more practical so as to meet the actual usage conditions. Summary of the Invention

[0007] The present invention aims to solve at least one of the technical problems existing in the prior art or related art.

[0008] Therefore, the object of the present invention is to provide a high-cushioning modified polyurethane shoe insole sheet and a preparation process.

[0009] The utility model provides a high-cushioning modified polyurethane insole sheet and its preparation process, comprising a conveyor belt, a forming mechanism and a demoulding mechanism provided on the conveyor belt, the forming mechanism comprising a fixed frame, a through slot provided in the fixed frame, two cutting plates provided on the bottom surface of the fixed frame, the cutting plates being located on both sides of the through slot,

[0010] An upper template and a lower template are arranged in the through groove. The upper template and the lower template are welded and connected through a connecting plate. A pouring gate groove is formed in the upper template, and a cutting ring is arranged at the bottom of the pouring gate groove.

[0011] The demolding mechanism includes a push plate. A group of guide rods are welded to the side surface of the push plate, and the guide rods penetrate through the vertical plate and are slidably connected with the vertical plate.

[0012] Oil application bars for applying mold release agent are arranged on both the surface and the bottom surface of the push plate, and a conveying mechanism for conveying the mold release agent into the push plate is arranged on the vertical plate.

[0013] Furthermore, support rods are welded to both sides of the fixed frame. Support plates are perpendicularly welded to the support rods, and the bottom ends of the support plates are bolt-fixed to the frame of the conveyor belt.

[0014] An inverted "U" - shaped fixed bracket is welded to the frame of the conveyor belt, and the vertical plate is welded and fixed to the fixed bracket.

[0015] Furthermore, a forward - reverse motor is bolt - fixed to the top surface of the fixed frame. The output shaft of the forward - reverse motor is key - connected to the top end of a rotating rod. The bottom end of the rotating rod penetrates through the fixed frame and a gear is fixed by a snap - pin, and the rotating rod is movably connected to the fixed frame through a bearing.

[0016] Connecting rods are welded to both of the two cutting plates. One end of each connecting rod is perpendicularly welded with a rack meshing with the gear, and the racks on the two connecting rods are parallel to each other.

[0017] Furthermore, the upper template and the lower template are arranged in parallel, and the outer walls of both are in contact with the groove wall of the through groove. A mold cavity for in - sole molding is formed by enclosing the bottom surface of the upper template, the top surface of the lower template, and the groove wall of the through groove.

[0018] Furthermore, the connecting plate is in a "C" shape. An electric push rod is bolt - fixed to the fixed frame, and the output end of the electric push rod is welded to the top surface of the connecting plate.

[0019] An opening groove for the support rod to penetrate into is formed in the side surface of the connecting plate, and the opening groove is in a long - strip shape.

[0020] Furthermore, the cutting plate matches the shape of the through groove. A T - shaped sliding bar is welded to the top surface of the cutting plate, and a sliding groove adapted to the sliding bar is formed in the bottom surface of the fixed frame.

[0021] The sliding bar is inserted into the sliding groove, and the sliding bar and the rack are parallelly distributed.

[0022] Further, the conveying mechanism includes an oil tank disposed on the fixed bracket and a fuel pump bolted to the vertical plate. The liquid inlet end of the fuel pump is flange-sealed to one end of the connecting pipe, and its liquid outlet end is flange-sealed to one end of the corrugated expansion hose. The other end of the connecting pipe is thread-sealed to the side wall of the oil tank.

[0023] Further, the overall height of the push plate and the oiling strip is equal to the distance between the upper template and the lower template. The oiling strip and the push plate have the same length, and the oiling strip is made of dust-free cloth.

[0024] A "C"-shaped fixing rod is welded to the side of the push plate, and a push rod is welded to the side of the fixing rod facing the vertical plate.

[0025] A microswitch is bolted to the side of the vertical plate. The button of the microswitch is coaxial with the push rod, and the microswitch is electrically connected to the fuel pump.

[0026] Further, a threaded hole groove is formed on the side of the push plate, and one end of the corrugated expansion hose is thread-sealed to the threaded hole groove.

[0027] An oil guiding groove and a liquid collecting groove are also formed in the wall of the push plate. Through holes are formed on the top and bottom surfaces of the push plate at equal intervals. The threaded hole groove is connected to the liquid collecting groove through the oil guiding groove. The liquid collecting groove is a strip-shaped structure and is connected to the through holes.

[0028] Further, the axis line of the bottom end of the gate groove is inclined, and a knife groove is formed on one side of the bottom end of the gate groove. The cutting ring is welded and fixed to the groove wall of the knife groove. The cutting ring and the knife groove are both arc-shaped, and the cutting edge surface of the cutting ring is flush with the groove surface of the bottom end of the gate groove.

[0029] Through the high-buffer modified polyurethane shoe gasket material and preparation process of the present invention, the beneficial effects are as follows:

[0030] By setting a fixed frame, an upper template and a lower template, the three are combined into a complete mold structure. When the raw material is injected between the three, foaming and forming can be carried out. When demolding, the upper template and the lower template can move vertically up and down inside the fixed frame. During the movement, a set of cutting plates can cut off the corner waste on the surface of the insole to ensure product quality.

[0031] At the same time, a push plate is provided. During the horizontal movement of the push plate, the insole between the upper template and the lower template can be pushed out to achieve automatic demolding. The demolded insole can enter the next process through the conveyor belt, which is beneficial to continuous and efficient operation.

[0032] The waste cutting and demoulding of the device can be carried out in sequence without interfering with each other, thereby ensuring the rapid cutting of scraps. Moreover, the demoulding mechanism will not damage the surface flatness of the upper and lower templates, so that there will be no scraps left after the insole is formed, which is beneficial to product quality.

[0033] The push plate is equipped with an oiling strip. When the push plate is reset, the release agent can be applied to the surface of the upper and lower templates. Demolding and oiling can be carried out simultaneously, which simplifies the process. Compared with oil spraying, the application method can ensure that an oil film is formed on the surface of the template, which is conducive to subsequent demoulding. In addition, the release agent consumption is low, which helps to reduce costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which

[0035] Figure 1 It is a side structural schematic diagram of the present invention;

[0036] Figure 2 It is a front view structural schematic diagram of the present invention;

[0037] Figure 3 This is a bottom-up structural diagram of the fixed frame and lower template of the present invention;

[0038] Figure 4 It is a schematic diagram of the longitudinal cross-section structure of the fixing frame and the cutting plate of the present invention;

[0039] Figure 5 It is a schematic diagram of the three-dimensional structure of the upper template and the lower template of the present invention;

[0040] Figure 6 This is a schematic diagram of the cross-sectional structure of the upper template and the gate trough of the present invention;

[0041] Figure 7 For the present invention Figure 6 A schematic diagram of the enlarged structure of point A;

[0042] Figure 8 Schematic diagram of the three-dimensional structure of the cutting ring of the present invention;

[0043] Figure 9 It is a schematic diagram of the three-dimensional structure of the push plate and the vertical plate of the present invention;

[0044] Figure 10 It is a schematic diagram of the cross-sectional structure of the push plate of the present invention.

[0045] In the figure: 1. Conveyor belt; 2. Support plate; 3. Support rod; 4. Fixed frame; 5. Through groove; 6. Upper template; 7. Lower template; 8. Connecting plate; 9. Electric push rod; 10. Cutting plate; 11. Sliding bar; 12. Rotating rod; 13. Gear; 14. Rack; 15. Connecting rod; 16. Fixed bracket; 17. Oil tank; 18. Vertical plate; 19. Push plate; 20. Guide rod; 21. Fixed rod; 22. Push rod; 23. Micro switch; 24. Corrugated telescopic hose; 25. Threaded hole groove; 26. Oil guide groove; 27. Liquid collecting trough; 28. Through hole; 29. Oiling strip; 30. Gate groove; 31. Knife groove; 32. Cutting ring. DETAILED DESCRIPTION

[0046] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the absence of conflict, the embodiments of the present application and the features therein can be combined with each other.

[0047] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0048] See also Figure 1-10 The present invention provides a technical solution: a high-cushioning modified polyurethane insole sheet and a preparation process thereof, comprising a conveyor belt 1, a forming mechanism and a demoulding mechanism being arranged on the conveyor belt 1, the forming mechanism comprising a fixed frame 4, a through slot 5 being provided in the fixed frame 4, and a bottom surface of the fixed frame 4 being provided with two cutting plates 10, the cutting plates 10 being located on both sides of the through slot 5, the cutting plates 10 being matched with the shape of the through slot 5, a T-shaped sliding bar 11 being welded to the top surface of the cutting plate 10, a sliding slot being provided on the bottom surface of the fixed frame 4 which is matched with the sliding bar 11, the sliding bar 11 being inserted into the sliding slot, and the sliding bar 11 and the rack 14 being distributed in parallel, the sliding bar 11 being able to slide horizontally in the sliding slot, and the T-shaped structure design enables the cutting plate 10 to be fixed on the fixed frame 4, and the shape of the two cutting plates 10 after sliding combination is consistent with the shape of the through slot 5, so that when the scraps of the formed insole are cut, they can fit in with the edge of the insole, thereby improving the cutting effect of the scraps of the insole;

[0049] An upper template 6 and a lower template 7 are provided in the through groove 5. A gate groove 30 is provided on the upper template 6. The upper template 6 and the lower template 7 are arranged in parallel, and the outer walls of the upper template 6 and the lower template 7 are in contact with the groove wall of the through groove 5. The bottom surface of the upper template 6, the top surface of the lower template 7 and the groove wall of the through groove 5 enclose a mold cavity for forming the insole. The upper template 6 and the lower template 7 are in a movable structure in the through groove 5 and can move vertically up and down in the through groove 5. When the two are located in the through groove 5, the raw material is injected into the mold cavity through the gate groove 30. After the raw material is formed, the upper template 6 and the lower template 7 are removed from the through groove 5 to facilitate subsequent demoulding operations.

[0050] After the upper template 6 and the lower template 7 move in the through groove 5 many times, a gap will gradually appear between the two and the through groove 5 due to friction. Then, during the casting and molding operation, some raw materials will overflow into the gap, thereby forming scraps on the top and bottom surfaces of the molded insole. The scraps are perpendicular to the surface of the insole, so the two cutting plates 10 can cut off the scraps by moving horizontally.

[0051] The upper template 6 and the lower template 7 are welded together by a connecting plate 8, and a cutting ring 32 is provided at the bottom of the gate groove 30. The upper template 6 and the lower template 7 are formed into one body by the connecting plate 8, and then the two can move synchronously. The two cooperate with each other to facilitate the molding and demoulding of the insole.

[0052] The demoulding mechanism includes a push plate 19, a group of guide rods 20 are welded to the side of the push plate 19, and the guide rods 20 pass through the vertical plate 18 and are slidably connected to the vertical plate 18. A hydraulic cylinder is bolted to the vertical plate 18, and the piston rod end of the hydraulic cylinder is welded to the push plate 19. When the hydraulic cylinder is energized, it can drive the push plate 19 to move. Under the action of a group of guide rods 20, the movement accuracy of the push plate 19 can be improved to avoid deviation in movement. In this way, the push plate 19 can be accurately inserted between the upper template 6 and the lower template 7, and the insole can be pushed out from the upper template 6 and the lower template 7 to achieve demoulding.

[0053] After the insole is formed, some raw materials will remain at the bottom of the gate trough 30. When the insole is pushed out from between the upper mold plate 6 and the lower mold plate 7, this part of the scrap can be cut off by the cutting ring 32.

[0054] The surface and bottom surface of the push plate 19 are both provided with oiling strips 29 for applying the release agent, and the vertical plate 18 is provided with a conveying mechanism for conveying the release agent into the push plate 19. After the push plate 19 pushes the insole out of the upper template 6 and the lower template 7, the release agent can be injected into the oiling strips 29 through the conveying mechanism. Then, when the push plate 19 is reset, the release agent can be evenly applied to the surface of the upper template 6 and the lower template 7 through the oiling strips 29. This method not only avoids the waste of the release agent, but also improves the utilization rate of the release agent.

[0055] On both sides of the fixed frame 4, there are support rods 3 welded and connected. The support rods 3 are perpendicularly welded and connected with support plates 2, and the bottom ends of the support plates 2 are bolt - fixed to the frame of the conveyor belt 1. Through the support plates 2 and the support rods 3, the fixed frame 4 is in a fixed state, facilitating the subsequent pouring and molding operations;

[0056] The in -sole after demolding can fall onto the conveyor belt 1 and then be conveyed to the next process. The cut waste will also fall onto the conveyor belt 1, and the waste can be centrally collected through the conveyor belt 1;

[0057] On the frame of the conveyor belt 1, there is an inverted "U" - shaped fixed bracket 16 welded and connected. The vertical plate 18 is welded and fixed to the fixed bracket 16. The push plate 19 can be fixed to the fixed bracket 16 through the vertical plate 18, ensuring that the push plate 19 can stably perform horizontal reciprocating movement.

[0058] The connecting plate 8 is in a "C" - shape. An electric push rod 9 is bolt - fixed on the fixed frame 4. The output end of the electric push rod 9 is welded and connected to the top surface of the connecting plate 8. An opening groove for the support rod 3 to penetrate is provided on the side surface of the connecting plate 8, and the opening groove is in a long - strip shape. The setting of the opening groove enables the connecting plate 8 to move vertically up and down along the support rod 3. The support rod 3 plays a guiding role. When the electric push rod 9 is powered on and operates, it can drive the upper template 6 and the lower template 7 to move up and down synchronously through the connecting plate 8. <所给内容有误,推测为 ,按照原文翻译为 <所给内容有误,推测为

[0059] ,按照原文翻译为<所给内容有误,推测为

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[0059] On the top surface of the fixed frame 4, a forward - reverse motor is bolt - fixed. The output shaft of the forward - reverse motor is key - connected to the top end of the rotating rod 12. The bottom end of the rotating rod 12 penetrates through the fixed frame 4 and is fixed with a gear 13 by a pin. The rotating rod 12 is movably connected to the fixed frame 4 through a bearing. On both of the two cutting plates 10, there are connecting rods 15 welded and connected. One end of the connecting rod 15 is perpendicularly welded and connected with a rack 14 meshing with the gear 13, and the racks 14 on the two connecting rods 15 are parallel to each other. After the forward - reverse motor is powered on and operates, it can drive the gear 13 to axially rotate through the rotating rod 12. Through the meshing action, the gear 13 can drive the two racks 14 to move horizontally. Under the action of the racks 14, the two connecting rods 15 can move towards and away from each other. The cutting plates 10 will move synchronously with the connecting rods 15. When the two cutting plates 10 move towards each other, the corner waste on the in -sole can be cut off. When the two cutting plates 10 move away from each other and reset, at this time, the upper template 6 and the lower template 7 can drive the in -sole to move downward. <所给内容有误,推测为

[0060] ,按照原文翻译为<所给内容有误,推测为

[0060] ,按照原文翻译为

[0060] The axis line at the bottom end of the gate slot 30 is inclined, and a knife slot 31 is provided on one side of the bottom end of the gate slot 30. The cutting ring 32 is welded and fixed to the groove wall of the knife slot 31. Both the cutting ring 32 and the knife slot 31 are arc-shaped, and the cutting edge surface of the cutting ring 32 is flush with the bottom groove surface of the gate slot 30. After the formed insole is pushed by the push plate 19, it can move horizontally between the upper template 6 and the lower template 7. When moving, the corner waste at the bottom end of the gate slot 30 will also move synchronously. Under the action of the cutting ring 32, this part of the corner waste can be cut off. Since the bottom end of the gate slot 30 is inclined, the cut waste can automatically slide out from the bottom end of the gate slot 30, facilitating the subsequent pouring operation;

[0061] The setting of the cutting ring 32 will not damage the flatness of the bottom groove wall of the gate slot 30, ensuring that the cut waste can slide out from the bottom of the gate slot 30, and the structure is reasonable.

[0062] The cutting ring 32 and the cutting plate 10 are made of carbon steel, making the cutting edge parts of the cutting ring 32 and the cutting plate 10 sharper, cutting off the waste completely without residue.

[0063] The conveying mechanism includes an oil tank 17 arranged on the fixed bracket 16, and a fuel pump bolted to the vertical plate 18. The inlet end of the fuel pump is flange-sealed and connected to one end of the connecting pipe, and its outlet end is flange-sealed and connected to one end of the corrugated telescopic hose 24. The other end of the connecting pipe is thread-sealed and connected to the side wall of the oil tank 17. A "C"-shaped fixing rod 21 is welded to the side of the push plate 19. A push rod 22 is welded to the side of the fixing rod 21 facing the vertical plate 18. A microswitch 23 is bolted to the side of the vertical plate 18. The button of the microswitch 23 and the push rod 22 are coaxial, and the microswitch 23 is electrically connected to the fuel pump. When the push plate 19 moves horizontally, it can带动 the fixing rod 21 to move synchronously. When the push rod 22 on the fixing rod 21 contacts the button of the microswitch 23, the microswitch 23 is turned on. At this time, the fuel pump is connected to the circuit, and it pumps the oil in the oil tank 17 into the corrugated telescopic hose 24 through the connecting pipe. When the push plate 19 is reset, the push rod 22 on the fixing rod 21 separates from the button of the microswitch 23, and at this time the fuel pump stops running, avoiding oil waste.

[0064] A threaded hole groove 25 is provided on the side of the push plate 19. One end of the corrugated telescopic hose 24 is thread-sealed and connected to the threaded hole groove 25. An oil guiding groove 26 and a liquid collecting groove 27 are also provided in the wall body of the push plate 19. Through holes 28 are provided on the top and bottom surfaces of the push plate 19 at equal intervals. The threaded hole groove 25 is connected to the liquid collecting groove 27 through the oil guiding groove 26. The liquid collecting groove 27 is a long strip structure and is connected to the through holes 28. The oil can enter the threaded hole groove 25 along one end of the corrugated telescopic hose 24, then enter the liquid collecting groove 27 through the oil guiding groove 26, and finally be sprayed onto the oiling strip 29 through the through holes 28.

[0065] The oiling strip 29 is the same length as the push plate 19 and is made of dust-free cloth. The oiling strip 29 is adhered to the surface of the push plate 19. When the release agent is sprayed through the through hole 28, it can slowly penetrate into the oiling strip 29, so that the oiling strip 29 is filled with the release agent.

[0066] The overall height of the push plate 19 and the oiling strip 29 is equal to the distance between the upper template 6 and the lower template 7. The push plate 19 and the oiling strip 29 are designed to have a height such that when the push plate 19 moves between the upper template 6 and the lower template 7, the oiling strip 29 thereon can contact the bottom surface of the upper template 6 and the surface of the lower template 7, and the release agent can be evenly applied to the bottom surface of the upper template 6 and the surface of the lower template 7 through the oiling strip 29, which is conducive to the demoulding operation.

[0067] In this specification, terms such as "connect," "install," and "fix" should be understood broadly. For example, "connect" can mean a fixed connection, a detachable connection, or an integral connection; it can mean a direct connection or an indirect connection through an intermediary. A person of ordinary skill in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0068] Throughout this specification, terms such as "one embodiment," "some embodiments," and "specific embodiments" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0069] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A high-cushioning modified polyurethane insole sheet and its preparation process, comprising a conveyor belt (1), wherein a forming mechanism and a demoulding mechanism are provided on the conveyor belt (1), characterized in that: The forming mechanism includes a fixed frame (4). A through groove (5) is formed in the fixed frame (4). Two cutting plates (10) are provided on the bottom surface of the fixed frame (4), and the cutting plates (10) are located on both sides of the through groove (5). An upper template (6) and a lower template (7) are arranged in the through groove (5). The upper template (6) and the lower template (7) are welded and connected through a connecting plate (8). A pouring groove (30) is formed in the upper template (6), and a cutting ring (32) is arranged at the bottom of the pouring groove (30). The demoulding mechanism includes a push plate (19). A group of guide rods (20) are welded to the side surface of the push plate (19), and the guide rods (20) penetrate through the vertical plate (18) and are slidably connected with the vertical plate (18). Application bars (29) for applying a demoulding agent are arranged on both the surface and the bottom surface of the push plate (19), and a conveying mechanism for conveying the demoulding agent into the push plate (19) is arranged on the vertical plate (18). The conveying mechanism includes an oil tank (17) arranged on a fixed bracket (16), and a fuel pump bolted to the vertical plate (18). The liquid inlet end of the fuel pump is hermetically connected to one end of a connecting pipe by a flange, and its liquid outlet end is hermetically connected to one end of a corrugated expansion hose (24) by a flange. The other end of the connecting pipe is hermetically connected to the side wall of the oil tank (17) by a thread. The overall height of the push plate (19) and the application bars (29) is equal to the distance between the upper template (6) and the lower template (7). The application bars (29) and the push plate (19) are of the same length, and the application bars (29) are made of dust-free cloth. A "C"-shaped fixing rod (21) is welded to the side surface of the push plate (19), and a push rod (22) is welded to the side of the fixing rod (21) facing the vertical plate (18). A microswitch (23) is bolted to the side surface of the vertical plate (18). The button of the microswitch (23) and the push rod (22) are coaxial, and the microswitch (23) is electrically connected to the fuel pump. A threaded hole groove (25) is formed in the side surface of the push plate (19), and one end of the corrugated expansion hose (24) is hermetically connected to the threaded hole groove (25) by a thread. An oil guiding groove (26) and a liquid collecting groove (27) are further formed in the wall body of the push plate (19). Through holes (28) are formed in an equally spaced manner on the top surface and the bottom surface of the push plate (19). The threaded hole groove (25) is communicated with the liquid collecting groove (27) through the oil guiding groove (26). The liquid collecting groove (27) is of a strip-shaped structure, and the liquid collecting groove (27) is communicated with the through holes (28).

2. The high-cushioning modified polyurethane insole sheet and preparation process according to claim 1, characterized in that: Branching rods (3) are welded to both sides of the fixed frame (4). A support plate (2) is perpendicularly welded to the branching rods (3), and the bottom end of the support plate (2) is bolted to the frame of the conveyor belt (1). An inverted "U"-shaped fixed bracket (16) is welded to the frame of the conveyor belt (1), and the vertical plate (18) is welded and fixed to the fixed bracket (16).

3. The high-cushioning modified polyurethane insole sheet and preparation process according to claim 1, characterized in that: A positive and negative motor is bolted to the top surface of the fixed frame (4). The output shaft of the positive and negative motor is key-connected to the top end of a rotating rod (12). The bottom end of the rotating rod (12) penetrates through the fixed frame (4) and a gear (13) is fixed by a snap pin, and the rotating rod (12) is movably connected to the fixed frame (4) through a bearing. A connecting rod (15) is welded to each of the two cutting plates (10), and a rack (14) meshing with the gear (13) is vertically welded to one end of the connecting rod (15), and the racks (14) on the two connecting rods (15) are parallel to each other.

4. The high-cushioning modified polyurethane insole sheet and preparation process according to claim 1, characterized in that: The upper template (6) and the lower template (7) are arranged in parallel, and the outer walls of the two templates are in contact with the groove wall of the through groove (5), and the bottom surface of the upper template (6), the top surface of the lower template (7) and the groove wall of the through groove (5) enclose a mold cavity for forming the insole.

5. The high-cushioning modified polyurethane insole sheet and preparation process according to claim 1, characterized in that: The connecting plate (8) is in a "C" shape, and an electric push rod (9) is fixed to the fixed frame (4) by bolts, and the output end of the electric push rod (9) is welded to the top surface of the connecting plate (8); An opening slot for the support rod (3) to pass through is provided on the side of the connecting plate (8), and the opening slot is in the shape of a long strip.

6. The high-cushioning modified polyurethane insole sheet and preparation process according to claim 3, characterized in that: The cutting plate (10) matches the shape of the through groove (5), and a T-shaped sliding bar (11) is welded to the top surface of the cutting plate (10). A sliding groove adapted to the sliding bar (11) is provided on the bottom surface of the fixed frame (4). The sliding bar (11) is inserted into the sliding groove, and the sliding bar (11) and the rack (14) are distributed in parallel.

7. The high-cushioning modified polyurethane insole sheet and preparation process according to claim 1, characterized in that: The axis of the bottom end of the gate groove (30) is inclined, and a knife groove (31) is opened on one side of the bottom end of the gate groove (30). The cutting ring (32) is welded and fixed on the groove wall of the knife groove (31). The cutting ring (32) and the knife groove (31) are both arc-shaped, and the blade surface of the cutting ring (32) is flush with the groove surface of the bottom end of the gate groove (30).

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