Polyurethane demolding equipment

Abstract

The invention provides polyurethane demolding equipment which comprises a machine table and a positioning and pressing mechanism installed on the machine table and used for a worker to place a forming mold, a moving and cutting table is movably arranged on the side, located on the positioning and pressing mechanism, of the machine table, a cover drawing mechanism is installed on one side of the upper end of the moving and cutting table, and a drawing auxiliary ejection mechanism is arranged on the other side of the upper end of the moving and cutting table. The moving and cutting table uses the cover drawing mechanism and the drawing auxiliary ejection mechanism in a switching mode through the moving and cutting assembly. According to the device, the polyurethane automatic demolding action can be achieved only by placing a forming mold on the frame base by personnel, the mold pipe, the bottom cover, the polyurethane product and the core shaft are sequentially disassembled, the bottom cover falls into the collecting box, the polyurethane product is guided and conveyed into the material receiving box, and the personnel need to place the mold pipe and the core shaft into the mold trolley after disassembling is completed; and the forming mold is placed in the frame base, and the sequential circulating operation is performed, so that the polyurethane demolding efficiency is improved, the working process is simplified, and the stable demolding action improves the processing quality of a polyurethane product.

Description

Technical Field

[0001] The invention relates to the technical field of polyurethane products, in particular to polyurethane demoulding equipment. Background Art

[0002] The processing of polyurethane products requires the use of a molding mold, which includes a mold tube, a core shaft, an aluminum tube and a bottom cover. After processing is completed, demolding is required to remove the polyurethane product in the mold tube. However, the polyurethane product is built into the mold tube, and personnel need to take out the bottom cover, the polyurethane product and the core shaft in turn. The existing demolding equipment requires personnel to take and place the positioning product multiple times in order to use the cylinder to take out the polyurethane product. The operation is cumbersome and the positioning is inaccurate, which can easily cause damage to the molding mold and the polyurethane product, affecting the processing quality. Summary of the invention

[0003] The technical problem solved by the present invention is to provide a polyurethane demoulding device that can disassemble a molding mold to automatically take out the polyurethane product in the molding mold to solve the problems raised in the above background technology.

[0004] The technical problem solved by the present invention is achieved by adopting the following technical scheme: polyurethane demoulding equipment, including a machine platform and a positioning and clamping mechanism installed on the machine platform for personnel to place a molding mold, the machine platform is movably provided with a transfer table on one side of the positioning and clamping mechanism, a cover pulling mechanism is installed on one side of the upper end of the transfer table, and a pull-out auxiliary punching mechanism is provided on the other side, the transfer table is moved by the transfer assembly to switch between the cover pulling mechanism and the pull-out auxiliary punching mechanism, so as to sequentially perform disassembly and assembly actions on the molding mold; The machine is provided with a core pulling mechanism on the side of the positioning and clamping mechanism away from the transfer and cutting platform, and the core pulling mechanism cooperates with the auxiliary pulling and punching mechanism to guide the core shaft and the polyurethane product out of the mold tube; The machine is also provided with a clamping mechanism and a clamping and positioning mechanism to clamp and fix the exported polyurethane product, and the core pulling mechanism pulls out the core shaft in the polyurethane product. The machine is also provided with a blanking component at the lower end of the clamping mechanism to guide the polyurethane product out, and a lifting mechanism for supporting the core shaft is installed at the corresponding position of the machine.

[0005] As a further embodiment of the present invention: The positioning and clamping mechanism includes a positioning frame installed at the corresponding position of the machine and a lower pressing piece installed on the positioning frame for lifting, the lower pressing piece includes a lower pressing plate and lower pressing blocks arranged on both sides of the lower pressing plate, the machine corresponding to the lower pressing block is equipped with a frame seat, the frame seat and the lower pressing block are provided with grooves arranged to cooperate with each other to clamp and fix the forming mold, the upper part of the positioning frame is fixedly installed with a positioning cylinder, the outer end of the output rod of the positioning cylinder is fixedly connected to the lower pressing plate, the upper ends of both sides of the lower pressing plate are fixedly installed with a first guide rod, the corresponding position of the positioning frame is provided with a sliding sleeve, the first guide rod is slidably installed in the sliding sleeve to limit the lower pressing plate. Specifically, the personnel place the forming mold in the grooves of the frames on both sides of the machine, and the positioning cylinder controls the lower pressing plate to descend so that the lower pressing block cooperates with the frame seat to clamp and fix the mold tube.

[0006] As a further embodiment of the present invention: The transfer and cutting assembly includes a first slide rail installed on the machine platform and a transfer and cutting cylinder arranged on one side of the machine platform for driving the transfer and cutting platform to move. The first slide rail is provided with two groups in parallel. The transfer and cutting platform is slidably installed on the first slide rail through a slider. The transfer and cutting cylinder is fixedly installed at the corresponding position of the machine platform. The outer end of the output rod of the transfer and cutting cylinder is fixedly connected to the connecting plate on the transfer and cutting platform to push the transfer and cutting platform to reciprocate on the first slide rail. The machine platform is also provided with a first drag chain on one side of the transfer and cutting platform to connect the cable to the equipment on the transfer and cutting platform through the first drag chain.

[0007] As a further embodiment of the present invention: The cover drawing mechanism includes a first drawing table slidably mounted on the transfer and cutting table and a first clamping cylinder arranged on the first drawing table, first sliding rods are fixedly arranged on both sides of the transfer and cutting table, sliding sleeves are installed on both sides of the first drawing table, and are slidably mounted on the first sliding rods through the sliding sleeves, a drawing cylinder for driving the first drawing table to move is arranged at the outer end of the transfer and cutting table, and the outer end of the output shaft of the drawing cylinder is fixedly connected to the first drawing table; clamping plates are arranged on both sides of the outer end of the first clamping cylinder to fix the bottom cover on the forming mold by closing the clamping plates; a material guide slide for receiving the bottom cover is arranged on one side of the machine, and when the first clamping cylinder is opened, the bottom cover falls on the material guide slide, the material guide slide is inclined, and a collection box is arranged at the lower end of the material guide slide to collect the bottom cover.

[0008] As a further embodiment of the present invention: The pulling auxiliary punching mechanism includes a punching plate, a push rod slidably mounted on the punching plate, and a punching driving member that drives the push rod to move back and forth. A second slide rail is fixedly mounted on the punching plate, and the end of the push rod is fixedly mounted on the top seat and slidably mounted on the second slide rail through the top seat. Photoelectric sensors for detecting the position of the top seat are provided at corresponding positions on both sides of the punching plate.

[0009] The ejection driving component includes an ejection frame installed on the ejection plate, a first pulley rotatably installed on both sides of the ejection frame, and a first synchronous belt sleeved on the first pulley. One side of the ejection frame is provided with an ejection motor for driving the first pulley to rotate. One side of the ejection seat is fixedly connected to the first synchronous belt through the first belt plate, so that the ejection seat is driven to slide through the reciprocating movement of the first synchronous belt, so that the ejector rod is inserted into the mold tube to eject the polyurethane product.

[0010] As a further embodiment of the present invention: The core pulling and drawing mechanism includes a pulling frame and a second pulling table slidably mounted on the pulling frame, and a pulling drive member driving the second pulling table to move on the pulling frame. Second sliding rods are fixedly mounted on both sides of the pulling frame, and sliding sleeves are provided on both sides of the second pulling table, and the second sliding rods are slidably mounted on the sliding sleeves. A second clamping cylinder is installed on the outer end of the second drawing table, and clamping plates are provided on both sides of the outer end of the second clamping cylinder, and the cover on the outer end of the core shaft is fixed by closing the clamping plates, thereby dragging the core shaft to move.

[0011] The drawing drive component includes a driving frame installed on the machine platform and a second synchronous belt rotatably installed on both sides of the driving frame, the second synchronous belt is sleeved on the second pulley corresponding to the driving frame, a driving motor is installed on one side of the driving frame, and the driving motor drives the second synchronous belts on both sides to move synchronously through a synchronous shaft, and the two sides of the second drawing table are connected to the second synchronous belt through a second belt plate to drive the second drawing table to move forward and backward through the second synchronous belt.

[0012] A second drag chain is provided on the machine platform corresponding to the second drawing platform, so as to connect the cable to the equipment on the second drawing platform through the second drag chain.

[0013] As a further embodiment of the present invention: The clamping mechanism includes a clamping frame installed on the machine platform, a clamping plate installed in the clamping frame for lifting and lowering, and finger cylinders arranged on both sides of the lower end of the clamping plate. The clamping frame is provided with a clamping cylinder for controlling the lifting and lowering adjustment of the clamping plate. The outer end of the output rod of the clamping cylinder is fixedly connected to the clamping plate. Second guide rods are fixedly provided on both sides of the clamping plate. The second guide rods slide through the sliding sleeves at the upper end of the clamping frame. Guide plates are fixedly installed on the upper ends of the two groups of second guide rods. The guide plates are provided with corresponding openings corresponding to the clamping cylinders. Jackets are respectively installed on both sides of the lower end of the finger cylinders to hold the polyurethane product by closing the jackets. When the core pulling mechanism pulls out the mandrel and the polyurethane product to the corresponding position, the clamping cylinder controls the clamping plate to descend, and the finger cylinder controls the jacket to close to hold the polyurethane product to prevent the polyurethane product from falling after leaving the mold tube.

[0014] As a further embodiment of the present invention: The clamping and positioning mechanism includes a clamping frame installed on the machine, a first clamping component installed on the upper end of the clamping frame, and a second clamping component arranged at the lower end of the clamping frame. The machine is provided with corresponding through holes corresponding to the second clamping component so that the first clamping component and the second clamping component cooperate to clamp and fix the polyurethane product.

[0015] The first clamping assembly includes a first clamping block that is slidably arranged and a first clamping cylinder that drives the first clamping block to move up and down. The first clamping cylinder is fixedly installed on the upper end of the clamping frame, and the outer end of the output rod of the first clamping cylinder is fixedly connected to the first clamping block. The clamping frame is provided with a first clamping slide rail corresponding to the first clamping block, and the first clamping block is slidably installed on the first clamping slide rail through a slider.

[0016] The second clamping assembly includes a second clamping block which is slidably arranged and a second clamping cylinder which drives the second clamping block to move up and down. The second clamping cylinder is fixedly installed at the lower end of the clamping frame. The outer end of the output rod of the second clamping cylinder is fixedly connected to the second clamping block. The clamping frame is provided with a second clamping slide rail corresponding to the second clamping block. The second clamping block is slidably installed on the second clamping slide rail through a slider.

[0017] The first clamping block and the second clamping block are provided with arc-shaped openings on the opposite sides thereof so as to be clamped on the outer end of the polyurethane product and to separate the core shaft from the polyurethane product under the pulling of the core pulling mechanism.

[0018] As a further embodiment of the present invention: The blanking assembly includes a guide frame installed at the lower end of the machine and a material receiving box arranged on one side of the machine. The machine is provided with a blanking hole at the lower end of the clamping mechanism. When the finger cylinder controls the clamping sleeve to open to both sides, the polyurethane product falls through the blanking hole on the machine onto the guide frame and rolls into the material receiving box through the guide frame.

[0019] As a further embodiment of the present invention: The lifting mechanism includes a lifting cylinder installed at a corresponding position of the machine and a lifting platform arranged at the upper end of the lifting cylinder output rod. The machine is provided with a lifting groove corresponding to the lifting platform so that the lifting platform can be built into the lifting groove without hindering the movement of the second drawing platform. The lifting platform is provided with an arc-shaped bracket so that the core shaft can be placed on the lifting platform.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows: the device fixes the molding die through the positioning and clamping mechanism, the cover pulling mechanism acts on one side of the molding die to remove the bottom cover, the core pulling and pulling mechanism is clamped on the side of the molding die away from the cover pulling mechanism, the shifting table switches the pulling and auxiliary punching mechanism to act on the mold tube, the pulling and auxiliary punching mechanism is inserted into the mold tube to eject the mandrel and the polyurethane product, the core pulling and pulling mechanism synchronously pulls out the mandrel and the polyurethane product, after the polyurethane product is pulled out to the corresponding position, the clamping mechanism clamps the polyurethane product to prevent the polyurethane product from falling after it is separated from the mold tube, after the polyurethane product is separated from the mold tube and moved to the corresponding position, it is detected by the sensor, the clamping and positioning mechanism fixes one side of the polyurethane product, the core pulling and pulling mechanism continues to pull outward to separate the mandrel from the polyurethane product, the lifting mechanism rises to hold the mandrel to prevent the mandrel from falling after it is separated from the polyurethane product, so that people can take the mandrel easily.

[0021] The device only requires personnel to place the molding mold on the frame to realize the automatic demoulding action of polyurethane, and realize the sequential separation of the mold tube, bottom cover, polyurethane product and core shaft. The bottom cover falls into the collection box, and the polyurethane product is guided to the receiving box. After the separation is completed, the personnel need to put the mold tube and core shaft into the mold trolley, and then put the molding mold into the frame, and the operation is cyclically performed in sequence, which improves the demoulding efficiency of polyurethane and simplifies the work process. The stable demoulding action improves the processing quality of polyurethane products and avoids damage caused by improper operation of personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the top view structure of the present invention; Figure 2 It is a schematic diagram of the main structure of the present invention; Figure 3 The three-dimensional structure of the present invention is shown in FIG. Figure 1 ; Figure 4 The three-dimensional structure of the present invention is shown in FIG. Figure 2 ; Figure 5 It is a structural schematic diagram of the positioning and pressing mechanism of the present invention; Figure 6 It is a schematic diagram of the installation structure of the transfer and cutting table of the present invention; Figure 7 for Figure 3 The enlarged structural diagram at A in the middle; Figure 8 It is a schematic diagram of the forming mold and the disassembly structure of the present invention.

[0023] Markings in the figure: 1. Machine; 2. Positioning and clamping mechanism; 3. Cover pulling mechanism; 4. Pulling auxiliary punching mechanism; 5. Core pulling mechanism; 6. Clamping mechanism; 7. Clamping and positioning mechanism; 8. Blanking assembly; 9. Lifting mechanism; 11. Cutting table; 12. Cutting cylinder; 13. First slide rail; 14. Connecting plate; 15. Forming mold; 16. Mandrel; 17. Mold tube; 18. Aluminum tube; 19. Bottom cover; 21. Positioning frame; 22. Lower pressing plate; 23. Lower pressing block; 24. Frame seat; 25. Positioning cylinder; 26. First guide rod; 31. First drawing platform; 32. First clamping cylinder; 33. First slide bar; 34. Drawing cylinder; 35. Material guide slideway; 36. Collection box; 41. punching plate; 42. ejector rod; 43. second slide rail; 44. punching frame; 45. first synchronous belt; 46. punching motor; 47. ejector seat; 51. Drawing frame; 52. Second drawing platform; 53. Second slide bar; 54. Second clamping cylinder; 55. Driving frame; 56. Second synchronous belt; 57. Driving motor; 58. Synchronous shaft; 61. Clamping frame; 62. Clamping plate; 63. Finger cylinder; 64. Clamping cylinder; 65. Second guide rod; 66. Guide plate; 67. Clamping sleeve; 68. Limiting plate; 71. Clamping frame; 72. First clamping block; 73. First clamping cylinder; 74. First clamping slide rail; 75. Second clamping block; 76. Second clamping slide rail; 77. Second clamping cylinder; 81. Guide frame; 82. Material receiving box; 91. Lifting cylinder; 92. Lifting platform. DETAILED DESCRIPTION

[0024] In order to make the technical means for realizing the present invention, the creative features, the objectives and effects to be achieved easily understood, the present invention is further described below with reference to specific diagrams.

[0025] like Figures 1 to 8 As shown, The present embodiment provides a polyurethane demoulding device, comprising a machine platform 1 and a positioning and clamping mechanism 2 installed on the machine platform 1 for personnel to place a molding mold 15. The machine platform 1 is movably provided with a transfer and cutting platform 11 on one side of the positioning and clamping mechanism 2. A cover pulling mechanism 3 is installed on one side of the upper end of the transfer and cutting platform 11, and a pull-out auxiliary punching mechanism 4 is installed on the other side. The transfer and cutting platform 11 is moved by the transfer and cutting assembly to switch between the use of the cover pulling mechanism 3 and the pull-out auxiliary punching mechanism 4, so as to sequentially perform disassembly and assembly actions on the molding mold 15. The machine 1 is provided with a core pulling mechanism 5 on the side of the positioning and clamping mechanism 2 away from the transfer and cutting platform 11. The core pulling mechanism 5 cooperates with the auxiliary pulling and punching mechanism 4 to guide the core shaft 16 and the polyurethane product out of the mold tube 17. The machine 1 is also provided with a clamping mechanism 6 and a clamping and positioning mechanism 7 to clamp and fix the exported polyurethane product. The core pulling mechanism 5 pulls out the core shaft 16 in the polyurethane product. The machine 1 is also provided with a blanking component 8 at the lower end of the clamping mechanism 6 to guide the polyurethane product out. A lifting mechanism 9 for supporting the core shaft 16 is installed at the corresponding position of the machine 1.

[0026] Specifically, the personnel place the forming mold 15 on the positioning and clamping mechanism 2, and the cutting table 11 moves, so that the cover pulling mechanism 3 acts on one side of the forming mold 15 to remove the bottom cover 19, and the core pulling and pulling mechanism 5 is clamped on the side of the forming mold 15 away from the cover pulling mechanism 3. The cutting table 11 switches the auxiliary pulling and punching mechanism 4 to act on the mold tube 17, and the auxiliary pulling and punching mechanism 4 is inserted into the mold tube 17 to eject the core shaft 16 and the polyurethane product. The core pulling and pulling mechanism 5 synchronously pulls out the core shaft 16 and the polyurethane product. After the polyurethane product is pulled out to the corresponding position, the clamping mechanism 6 clamps the polyurethane product to prevent the polyurethane product from falling after it is separated from the mold tube 17. After the polyurethane product is separated from the mold tube 17 and moves to the corresponding position, it is detected by the sensor, and the clamping and positioning mechanism 7 fixes one side of the polyurethane product. The core pulling mechanism 5 continues to pull outward to separate the core shaft 16 from the polyurethane product. The lifting mechanism 9 rises and holds the core shaft 16 to prevent the core shaft 16 from falling after it is separated from the polyurethane product, so that people can take the core shaft 16.

[0027] like Figure 3 , Figure 4 and Figure 5 As shown, in this embodiment, the positioning and clamping mechanism 2 includes a positioning frame 21 installed at the corresponding position of the machine 1 and a lower pressing member installed and lifted on the positioning frame 21, the lower pressing member includes a lower pressing plate 22 and lower pressing blocks 23 arranged on both sides of the lower pressing plate 22, the machine 1 is equipped with a frame seat 24 corresponding to the lower pressing block 23, the frame seat 24 and the lower pressing block 23 are provided with grooves arranged to cooperate with each other to clamp and fix the forming mold 15, a positioning cylinder 25 is fixedly installed on the positioning frame 21, the outer end of the output rod of the positioning cylinder 25 is fixedly connected to the lower pressing plate 22, the first guide rod 26 is fixedly installed on the upper ends of both sides of the lower pressing plate 22, a sliding sleeve is provided at the corresponding position of the positioning frame 21, and the first guide rod 26 is slidably installed in the sliding sleeve to limit the lower pressing plate 22. Specifically, the personnel place the forming mold 15 in the grooves of the brackets 24 on both sides of the machine platform 1 , and the positioning cylinder 25 controls the lower pressing plate 2 to descend, so that the lower pressing block 23 cooperates with the brackets 24 to clamp and fix the mold tube 17 .

[0028] like Figure 3 , Figure 4 and Figure 6As shown, in this embodiment, the cutting and transferring assembly includes a first slide rail 13 installed on the machine 1 and a cutting and transferring cylinder 12 arranged on one side of the machine 1 for driving the cutting and transferring platform 11 to move. The first slide rail 13 is provided with two groups in parallel. The cutting and transferring platform 11 is slidably installed on the first slide rail 13 through a slider. The outer end of the output rod of the cutting and transferring cylinder 12 is fixed to the connecting plate 14 on the cutting and transferring platform 11 to push the cutting and transferring platform 11 to reciprocate on the first slide rail 13. The machine 1 is also provided with a first drag chain on one side of the cutting and transferring platform 11 to connect the cable to the equipment on the cutting and transferring platform 11 through the first drag chain.

[0029] like Figure 3 , Figure 4 and Figure 6 As shown, in this embodiment, the cover drawing mechanism 3 includes a first drawing table 31 slidably mounted on the transfer and cutting table 11 and a first clamping cylinder 32 arranged on the first drawing table 31, first slide bars 33 are fixedly arranged on both sides of the transfer and cutting table 11, and sliding sleeves are installed on both sides of the first drawing table 31, and are slidably mounted on the first slide bars 33 through the sliding sleeves, and a drawing cylinder 34 for driving the first drawing table 31 to move is provided at the outer end of the transfer and cutting table 11, and the outer end of the output shaft of the drawing cylinder 34 is fixedly connected to the first drawing table 31; clamping plates are provided on both sides of the outer end of the first clamping cylinder 32 to fix the bottom cover 19 on the forming mold 15 by closing the clamping plates; a material guide slide 35 for receiving the bottom cover 19 is provided on one side of the machine 1, and when the first clamping cylinder 32 is opened, the bottom cover 19 falls on the material guide slide 35, and the material guide slide 35 is inclined, and the machine 1 is provided with a collecting box 36 at the lower end of the material guide slide 35 to collect the bottom cover 19.

[0030] like Figure 3 , Figure 4 and Figure 6 As shown, in this embodiment, the drawing auxiliary punching mechanism 4 includes a punching plate 41, a push rod 42 slidably mounted on the punching plate 41, and a punching driving member that drives the push rod 42 to reciprocate. A second slide rail 43 is fixedly mounted on the punching plate 41, and the end of the push rod 42 is fixedly mounted on the top seat 47 and slidably mounted on the second slide rail 43 through the top seat 47. Photoelectric sensors for detecting the position of the top seat 47 are provided at corresponding positions on both sides of the punching plate 41.

[0031] The ejection driving component includes an ejection frame 44 installed on the ejection plate 41, a first pulley rotatably installed on both sides of the ejection frame 44, and a first synchronous belt 45 sleeved on the first pulley. One side of the ejection frame 44 is provided with an ejection motor 46 for driving the first pulley to rotate. One side of the ejection seat 47 is fixedly connected to the first synchronous belt 45 through a first belt plate, so that the reciprocating movement of the first synchronous belt 45 drives the movement of the ejection seat 47, so that the ejector rod 42 is inserted into the mold tube 17 to eject the polyurethane product.

[0032] like Figure 3 and Figure 4 As shown, in this embodiment, the core pulling and drawing mechanism 5 includes a drawing frame 51 and a second drawing table 52 slidably mounted on the drawing frame 51, and a drawing drive member driving the second drawing table 52 to move on the drawing frame 51, second slide bars 53 are fixedly mounted on both sides of the drawing frame 51, and sliding sleeves are provided on both sides of the second drawing table 52, and the second slide bar 53 is slidably mounted on the second slide bar 53 through the sliding sleeves; a second clamping cylinder 54 is installed on the outer end of the second drawing table 52, and splints are provided on both sides of the outer end of the second clamping cylinder 54, and the cover of the outer end of the core shaft 16 is fixed by closing the splints, thereby dragging the core shaft 16 to move.

[0033] The drawing drive component includes a driving frame 55 and a second synchronous belt 56 rotatably installed on both sides of the driving frame 55. The second synchronous belt 56 is sleeved on the second pulley corresponding to the driving frame 55. A driving motor 57 is installed on one side of the driving frame 55. The driving motor 57 drives the second synchronous belts 56 on both sides to move synchronously through a synchronous shaft 58. The two sides of the second drawing table 52 are connected to the second synchronous belt 56 through a second belt plate to drive the second drawing table 52 to move forward and backward through the second synchronous belt 56.

[0034] A second drag chain is provided on the machine 1 corresponding to the second drawing platform 52 so as to connect the cable to the equipment on the second drawing platform 52 through the second drag chain.

[0035] like Figure 3 , Figure 4 and Figure 7 As shown, in this embodiment, the clamping mechanism 6 includes a clamping frame 61 installed on the machine 1, a clamping plate 62 installed in the clamping frame 61 for lifting and lowering, and a finger cylinder 63 arranged on both sides of the lower end of the clamping plate 62. The clamping frame 61 is provided with a clamping cylinder 64 for controlling the lifting and lowering adjustment of the clamping plate 62. The outer end of the output rod of the clamping cylinder 64 is fixedly connected to the clamping plate 62. Second guide rods 65 are fixedly provided on both sides of the clamping plate 62. The second guide rods 65 slide through the sliding sleeve at the upper end of the clamping frame 61. Guide plates 66 are fixedly installed on the upper ends of the two groups of second guide rods 65. The guide plates 66 are provided with corresponding openings corresponding to the clamping cylinder 64; sleeves 67 are respectively installed on both sides of the lower end of the finger cylinder 63 to hold the polyurethane product by closing the sleeves 67.

[0036] The clamping frame 61 is provided with a limit plate 68 for limiting the descending position of the clamping plate 62. The limit plate 68 is fixedly installed on both sides of the clamping frame 61. When the clamping plate 62 descends to a suitable position, the clamping plate 62 will abut against the upper end of the limit plate 68.

[0037] When the core pulling mechanism 5 pulls out the core shaft 16 and the polyurethane product to the corresponding position, the clamping cylinder 64 controls the clamping plate 62 to descend, and the finger cylinder 63 controls the jacket 67 to close to support the polyurethane product and prevent the polyurethane product from falling after leaving the mold tube 17.

[0038] like Figure 2 , Figure 3 , Figure 4 and Figure 7 As shown, in this embodiment, the clamping and positioning mechanism 7 includes a clamping frame 71 installed on the machine 1, a first clamping component installed at the upper end of the clamping frame 71, and a second clamping component arranged at the lower end of the clamping frame 71. The machine 1 is provided with a corresponding through hole corresponding to the second clamping component, so that the first clamping component and the second clamping component cooperate to clamp and fix the polyurethane product.

[0039] The first clamping assembly includes a first clamping block 72 that is slidably arranged and a first clamping cylinder 73 that drives the first clamping block 72 to move up and down. The first clamping cylinder 73 is fixedly installed on the upper end of the clamping frame 71, and the outer end of the output rod of the first clamping cylinder 73 is fixedly connected to the first clamping block 72. The clamping frame 71 is provided with a first clamping slide rail 74 corresponding to the first clamping block 72, and the first clamping block 72 is slidably installed on the first clamping slide rail 74 through a slider.

[0040] The second clamping assembly includes a second clamping block 75 that is slidably arranged and a second clamping cylinder 77 that drives the second clamping block 75 to move up and down. The second clamping cylinder 77 is fixedly installed at the lower end of the clamping frame 71, and the outer end of the output rod of the second clamping cylinder 77 is fixedly connected to the second clamping block 75. The clamping frame 71 is provided with a second clamping slide rail 76 corresponding to the second clamping block 75, and the second clamping block 75 is slidably installed on the second clamping slide rail 76 through a slider.

[0041] The first clamping block 72 and the second clamping block 75 are provided with arc-shaped openings on the opposite sides thereof so as to be clamped on the outer end of the polyurethane product and to separate the core shaft 16 from the polyurethane product under the pulling of the core pulling mechanism 5 .

[0042] like Figure 4 As shown, in this embodiment, the blanking assembly 8 includes a guide frame 81 installed at the lower end of the machine 1 and a material receiving box 82 arranged on one side of the machine 1. The machine 1 is provided with a blanking hole at the lower end of the clamping mechanism 6. When the finger cylinder 63 controls the clamping sleeve 67 to open to both sides, the polyurethane product falls through the blanking hole on the machine 1 onto the guide frame 81, and rolls into the material receiving box 82 through the guide frame.

[0043] like Figure 2 and Figure 4 As shown, in this embodiment, the lifting mechanism 9 includes a lifting cylinder 91 installed at the corresponding position of the machine 1 and a lifting platform 92 arranged at the upper end of the lifting cylinder output rod. The machine 1 is provided with a lifting groove corresponding to the lifting platform, so that the lifting platform 92 can be built into the lifting groove without hindering the movement of the second drawing table 52. The lifting platform 92 is provided with an arc-shaped bracket to place the core shaft 16 on the lifting platform 92.

[0044] The working principle of the present invention is as follows: a worker takes out the forming mold 15 from the mold trolley and places it on the frame 24 of the positioning and clamping mechanism 2, and the positioning cylinder 25 controls the lower pressing plate 22 to descend, and the lower pressing blocks 23 on both sides of the lower pressing plate 22 cooperate with the frame 24 to fix the mold tube 17 of the forming mold 15; The cover drawing mechanism 3 and the core pulling drawing mechanism 5 act synchronously. The first clamping cylinder 32 drives the first drawing platform 31 to move toward the forming mold 15, and clamps the bottom cover 19 at the outer end of the forming mold 15 by the first clamping cylinder 32. The second drawing platform 52 clamps the cover at the outer end of the core shaft 16 of the forming mold 15 by the second clamping cylinder 54, and pulls the bottom cover 19 and the cover out of the mold tube 17 respectively. The transfer cylinder 12 drives the transfer table 11 to move, so as to switch to the core pulling mechanism 5. After the first clamping cylinder 32 moves to the corresponding position, the bottom cover 19 is released, and the bottom cover 19 falls onto the material guide slide 35, and slides into the collection box 36 through the material guide slide 35; The auxiliary drawing and ejecting mechanism 4 is driven by the ejecting driving member, so that the ejector rod 42 is inserted into one side of the mold tube 17 and ejects the polyurethane product in the mold tube 17. The second drawing platform 52 pulls the mandrel 16 and the polyurethane product outward on the other side, and the two cooperate to gradually separate the polyurethane product from the mold tube 17. After the polyurethane product moves out to a certain distance, the clamping cylinder 64 controls the clamping plate 62 to descend to a suitable position through sensor detection, and the finger cylinder 63 controls the clamping sleeves 67 on both sides to close to support the polyurethane product until the polyurethane product is separated from the mold tube 17 and the ejector rod 42 is retracted to return to its original position; The clamping and positioning mechanism 7 clamps and fixes one end of the polyurethane product through the first clamping block 72 and the second clamping block 75 that move upward and downward, and the second drawing table 52 continues to pull the mandrel 16 outward until the mandrel 16 is separated from the polyurethane product. The first clamping block 72 and the second clamping block 75 move to both sides to release the polyurethane product, and the finger cylinder 63 controls the jackets 67 on both sides to open, and the polyurethane product falls onto the guide frame 81 and is introduced into the receiving box 82 through the guide frame 81. After the core shaft 16 moves a certain distance, the lifting mechanism 9 controls the lifting platform 92 to rise, thereby holding up the core shaft 16; After the separation is completed, the lower pressing plate 22 rises, and the second clamping cylinder 54 releases the cover on the outer end of the mandrel 16. The operator needs to take out the mold tube 17 and the mandrel 16 and put them into the mold trolley. Finally, each mechanism and system returns to the initial state and waits; The operator takes out the forming mold 15 from the mold trolley again and puts it on the frame 24, and the work is circulated like this.

[0045] like Figure 8As shown, the molding mold is composed of a core shaft 16, a mold tube 17, an aluminum tube 18 and a bottom cover 19 which are pressed together. The aluminum tube 18 serves as an inner lining of the polyurethane product, and the polyurethane product can be a rubber roller. When demolding the polyurethane product, the bottom cover 19, the mold tube 17 and the core shaft 16 need to be taken out in turn.

[0046] The above shows and describes the basic principle and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents. It should be noted that, in this article, if there are relational terms such as first and second, it is only used to distinguish one entity or operation from another entity or operation, and does not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the term "includes", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that the 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. In the absence of more restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

Claims

1. Polyurethane demoulding equipment, including a machine platform and a positioning and clamping mechanism installed on the machine platform for personnel to place the molding mold, characterized in that: The machine is located on one side of the positioning and clamping mechanism and is movably provided with a transfer cutting table. A cover pulling mechanism is installed on one side of the upper end of the transfer cutting table, and a pull-assisted punching mechanism is installed on the other side. The transfer cutting table is moved by the transfer cutting assembly to switch between the cover pulling mechanism and the pull-assisted punching mechanism, and the forming mold is disassembled and assembled in sequence. The machine is provided with a core pulling mechanism on the side of the positioning and clamping mechanism away from the transfer and cutting platform, and the core pulling mechanism cooperates with the auxiliary pulling and punching mechanism to guide the core shaft and the polyurethane product out of the mold tube; The machine is also provided with a clamping mechanism and a clamping and positioning mechanism to clamp and fix the exported polyurethane product, and the core pulling mechanism pulls out the core shaft in the polyurethane product. The machine is also provided with a blanking component at the lower end of the clamping mechanism to guide the polyurethane product out, and a lifting mechanism for supporting the core shaft is installed at the corresponding position of the machine.

2. The polyurethane demoulding device according to claim 1, characterized in that: The positioning and clamping mechanism includes a positioning frame installed at the corresponding position of the machine and a lower pressure piece installed and lifted on the positioning frame, the lower pressure piece includes a lower pressure plate and lower pressure blocks arranged on both sides of the lower pressure plate, the machine table is equipped with a frame seat corresponding to the lower pressure block, the frame seat and the lower pressure block are provided with grooves arranged to cooperate with each other to clamp and fix the forming mold, a positioning cylinder is fixedly installed on the positioning frame, the outer end of the output rod of the positioning cylinder is fixedly connected to the lower pressure plate, and a first guide rod is fixedly installed on both sides of the upper end of the lower pressure plate, a sliding sleeve is provided at the corresponding position of the positioning frame, and the first guide rod is slidably installed in the sliding sleeve to limit the lower pressure plate.

3. The polyurethane demoulding device according to claim 1, characterized in that: The transfer and cutting assembly includes a first slide rail installed on the machine platform and a transfer and cutting cylinder arranged on one side of the machine platform for driving the transfer and cutting platform to move. The first slide rail is provided with two groups in parallel. The transfer and cutting platform is slidably installed on the first slide rail through a slider. The transfer and cutting cylinder is fixedly installed at the corresponding position of the machine platform. The outer end of the output rod of the transfer and cutting cylinder is fixedly connected to the connecting plate on the transfer and cutting platform to push the transfer and cutting platform to reciprocate on the first slide rail. The machine platform is also provided with a first drag chain on one side of the transfer and cutting platform to connect the cable to the equipment on the transfer and cutting platform through the first drag chain.

4. The polyurethane demoulding device according to claim 3, characterized in that: The cover drawing mechanism includes a first drawing table slidably mounted on the transfer and cutting table and a first clamping cylinder arranged on the first drawing table, first sliding rods are fixedly arranged on both sides of the transfer and cutting table, sliding sleeves are installed on both sides of the first drawing table, and are slidably mounted on the first sliding rods through the sliding sleeves, a drawing cylinder for driving the first drawing table to move is arranged at the outer end of the transfer and cutting table, and the outer end of the output shaft of the drawing cylinder is fixedly connected to the first drawing table; clamping plates are arranged on both sides of the outer end of the first clamping cylinder to fix the bottom cover on the forming mold by closing the clamping plates; a material guide slide for receiving the bottom cover is arranged on one side of the machine, and when the first clamping cylinder is opened, the bottom cover falls on the material guide slide, the material guide slide is arranged inclined, and a collection box is arranged at the lower end of the material guide slide on the machine.

5. The polyurethane demoulding device according to claim 3, characterized in that: The auxiliary pulling and ejecting mechanism comprises an ejecting plate, an ejecting rod slidably mounted on the ejecting plate, and an ejecting driving member for driving the ejecting rod to reciprocate. A second slide rail is fixedly mounted on the ejecting plate, and the end of the ejecting rod is fixedly mounted on the ejecting seat and slidably mounted on the second slide rail through the ejecting seat. Photoelectric sensors for detecting the position of the ejecting seat are provided at corresponding positions on both sides of the ejecting plate. The ejection driving component includes an ejection frame installed on the ejection plate, a first pulley rotatably installed on both sides of the ejection frame, and a first synchronous belt sleeved on the first pulley. One side of the ejection frame is provided with an ejection motor for driving the first pulley to rotate. One side of the ejection seat is fixedly connected to the first synchronous belt through the first belt plate, so that the ejection seat is driven to slide through the reciprocating movement of the first synchronous belt, so that the ejector rod is inserted into the mold tube to eject the polyurethane product.

6. The polyurethane demoulding device according to claim 5, characterized in that: The core-pulling and drawing mechanism comprises a drawing frame and a second drawing table slidably mounted on the drawing frame, and a drawing driving member driving the second drawing table to move on the drawing frame. Second slide bars are fixedly mounted on both sides of the drawing frame, and sliding sleeves are arranged on both sides of the second drawing table, and the second slide bars are slidably mounted on the second slide bars through the sliding sleeves. A second clamping cylinder is installed on the outer end of the second drawing table, and clamping plates are arranged on both sides of the outer end of the second clamping cylinder, and the cover at the outer end of the mandrel is fixed by closing the clamping plates, thereby dragging the mandrel to move. The drawing drive member includes a driving frame mounted on the machine platform and a second synchronous belt rotatably mounted on both sides of the driving frame, the second synchronous belt is sleeved on a second pulley corresponding to the driving frame, a driving motor is mounted on one side of the driving frame, the driving motor drives the second synchronous belts on both sides to move synchronously through a synchronous shaft, and both sides of the second drawing table are connected to the second synchronous belt through a second belt plate, so as to drive the second drawing table to move forward and backward through the second synchronous belt; A second drag chain is provided on the machine platform corresponding to the second drawing platform, so as to connect the cable to the equipment on the second drawing platform through the second drag chain.

7. The polyurethane demoulding device according to claim 6, characterized in that: The clamping mechanism includes a clamping frame installed on the machine platform, a clamping plate installed in the clamping frame for lifting and lowering, and finger cylinders arranged on both sides of the lower end of the clamping plate. The clamping frame is provided with a clamping cylinder for controlling the lifting and lowering adjustment of the clamping plate. The outer end of the output rod of the clamping cylinder is fixedly connected to the clamping plate. Second guide rods are fixedly provided on both sides of the clamping plate. The second guide rods slide through the sliding sleeves at the upper end of the clamping frame. Guide plates are fixedly installed on the upper ends of the two groups of second guide rods. The guide plates are provided with corresponding openings corresponding to the clamping cylinders. Clamping sleeves are respectively installed on both sides of the lower end of the finger cylinders to support the polyurethane product by closing the clamping sleeves.

8. The polyurethane demoulding device according to claim 7, characterized in that: The clamping and positioning mechanism comprises a clamping frame mounted on the machine platform, a first clamping assembly mounted on the upper end of the clamping frame, and a second clamping assembly arranged at the lower end of the clamping frame. The machine platform is provided with corresponding through holes corresponding to the second clamping assembly, so that the first clamping assembly and the second clamping assembly cooperate to clamp and fix the polyurethane product. The first clamping assembly includes a first clamping block that is slidably arranged and a first clamping cylinder that drives the first clamping block to move up and down, the first clamping cylinder is fixedly installed on the upper end of the clamping frame, the outer end of the output rod of the first clamping cylinder is fixedly connected to the first clamping block, the clamping frame is provided with a first clamping slide rail corresponding to the first clamping block, and the first clamping block is slidably installed on the first clamping slide rail through a slider; The second clamping assembly includes a second clamping block that is slidably arranged and a second clamping cylinder that drives the second clamping block to move up and down, the second clamping cylinder is fixedly installed at the lower end of the clamping frame, the outer end of the output rod of the second clamping cylinder is fixedly connected to the second clamping block, the clamping frame is provided with a second clamping slide rail corresponding to the second clamping block, and the second clamping block is slidably installed on the second clamping slide rail through a slider; The first clamping block and the second clamping block are provided with arc-shaped openings on the opposite sides thereof so as to be clamped on the outer end of the polyurethane product.

9. The polyurethane demoulding device according to claim 8, characterized in that: The blanking assembly includes a guide frame installed at the lower end of the machine and a material receiving box arranged on one side of the machine. The machine is provided with a blanking hole at the lower end of the clamping mechanism. When the finger cylinder controls the clamping sleeve to open to both sides, the polyurethane product falls through the blanking hole on the machine onto the guide frame and rolls into the material receiving box through the guide frame.

10. The polyurethane demoulding device according to claim 8, characterized in that: The lifting mechanism includes a lifting cylinder installed at a corresponding position of the machine and a lifting platform arranged at the upper end of the lifting cylinder output rod. The machine is provided with a lifting groove corresponding to the lifting platform so that the lifting platform can be built into the lifting groove. The lifting platform is provided with an arc-shaped bracket so that the core shaft can be placed on the lifting platform.

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