A fully automatic EVA secondary hot and cold forming machine

Abstract

The present invention discloses a fully automatic EVA secondary hot and cold forming machine, comprising an operating table, with two support plates symmetrically fixed to one side of the operating table. Through the arrangement of a first conveying structure and a second conveying structure, the first mold and the second mold continuously rotate on the first conveying structure and the second conveying structure, effectively realizing automatic heating and automatic cooling during operation, thereby achieving the purpose of fully automatic operation. The coordinated use of the first conveying structure and the second conveying structure can effectively and automatically transport the first mold and the second mold in turn to the cooling zone between the upper cold press plate and the lower cold press plate and the heating zone between the upper hot press plate and the lower hot press plate, and through the arrangement of the mold opening structure, the first mold and the second mold moved to the operating table can be automatically opened, and the staff only needs to be responsible for the work of adding materials and demolding to take out the molded products. Therefore, the present forming machine can effectively save the workload of workers.

Description

Technical Field

[0001] The invention relates to the technical field of EVA molding machines, in particular to a full-automatic EVA secondary hot and cold molding machine. Background Art

[0002] EVA resin is an ethylene-vinyl acetate copolymer, with a typical vinyl acetate (VA) content of 5% to 40%. Compared to polyethylene, EVA introduces vinyl acetate monomer into the molecular chain, which reduces high crystallinity and improves flexibility, impact resistance, filler compatibility, and heat sealing properties. It is widely used in foamed shoe materials, functional greenhouse films, packaging films, hot melt adhesives, wires and cables, and toys. Generally speaking, the performance of EVA resin mainly depends on the vinyl acetate content in the molecular chain. For sole molding, a molding machine is required. First, existing foaming hot and cold molding machines generally require workers to directly push and pull the mold from the press, which is very physically demanding. Second, due to the high vulcanization foaming temperature, foaming hot and cold molding machines are generally not convenient for transferring the mold from the heating zone to the cooling zone, posing certain safety risks.

[0003] In order to solve the above problems, the present invention proposes a fully automatic EVA secondary hot and cold forming machine. Summary of the Invention

[0004] In order to solve the above problems, the present invention provides a fully automatic EVA secondary hot and cold forming machine.

[0005] The present invention is achieved through the following technical solutions:

[0006] A fully automatic EVA secondary hot and cold forming machine comprises an operating table, with two support plates symmetrically fixed on one side of the operating table, a control panel and a PLC controller fixedly mounted on the side wall of one of the support plates, a first horizontal plate and a second horizontal plate fixed parallel to each other above and below the two support plates, a hot pressing structure and a cold pressing structure are provided between the two support plates, the cold pressing structure is arranged near the operating table, the hot pressing structure and the cold pressing structure are both installed on the first horizontal plate and the second horizontal plate, a first conveying structure and a second conveying structure are provided between the first horizontal plate and the second horizontal plate, the first conveying structure is arranged at the lower end of the second conveying structure, a first mold is provided on the first conveying structure, and a second mold is provided on the second conveying structure, a moving structure for moving the second mold is fixedly mounted on the side walls of the two support plates, and a mold opening structure is fixedly mounted on the operating table near the first conveying structure.

[0007] Preferably, the cold pressing structure includes a first hydraulic cylinder and a second hydraulic cylinder respectively fixed on the first horizontal plate and the second horizontal plate, the telescopic end of the first hydraulic cylinder penetrates the first horizontal plate and is fixed with an upper cold pressing plate, the top surface of the upper cold pressing plate is fixed with a first guide rod, the top end of the first guide rod penetrates the first horizontal plate and is slidably connected with the contact point therewith, the telescopic end of the second hydraulic cylinder penetrates the second horizontal plate and is fixed with a lower cold pressing plate, the bottom surface of the lower cold pressing plate is fixed with a second guide rod, the bottom end of the second guide rod penetrates the second horizontal plate and is slidably connected with the contact point therewith, and the lower cold pressing plate is arranged corresponding to the upper cold pressing plate.

[0008] Preferably, the hot pressing structure includes a third hydraulic cylinder and a fourth hydraulic cylinder respectively fixed on the first cross plate and the second cross plate, the telescopic end of the third hydraulic cylinder penetrates the first cross plate and is fixed with the upper hot pressing plate, the top surface of the upper hot pressing plate is fixed with a third guide rod, the top end of the third guide rod penetrates the first cross plate and is slidably connected with the contact point therewith, the telescopic end of the fourth hydraulic cylinder penetrates the second cross plate and is fixed with the lower hot pressing plate, the bottom surface of the lower hot pressing plate is fixed with the fourth guide rod, the bottom end of the fourth guide rod penetrates the second cross plate and is slidably connected with the contact point therewith, and the lower hot pressing plate is arranged corresponding to the upper hot pressing plate.

[0009] Preferably, the first conveying structure includes two mounting plates symmetrically fixed on opposite surfaces of the two support plates, the side walls of the two mounting plates being respectively fixedly mounted with a first motor, the output shaft of the first motor penetrates the mounting plate and is fixed with a first screw, the other ends of the two first screws are provided with a same fixing plate, the fixing plate is fixed to the top surface of the operating table, the end of the first screw is rotatably connected to the fixing plate through a bearing, the two first screws are respectively covered with a first screw nut, the first screw nut is threadedly connected to the first screw, the top surfaces of the two first screw nuts are respectively fixed with a first supporting plate, the top surfaces of the two first supporting plates are provided with the same first frame for placing the first mold, the bottom end of the first screw nut is fixed with a first guide cylinder, a fifth guide rod is slidably sleeved in the first guide cylinder, one end of the fifth guide rod is fixedly connected to the mounting plate, and the other end of the fifth guide rod is fixedly connected to the fixing plate.

[0010] Preferably, the second conveying structure includes two U-shaped frames, and the second motor is fixedly installed at one end of the two U-shaped frames, and a second screw and a sixth guide rod are provided in parallel in each of the U-shaped frames, and one end of the second screw is rotatably connected to the inner wall of one side of the U-shaped frame through a bearing, and the other end of the second screw penetrates the inner wall of the other side of the U-shaped frame and is fixedly connected to the second motor output shaft. The two ends of the sixth guide rod are respectively fixedly connected to the inner walls on both sides of the U-shaped frame, and the two second screws are symmetrically covered with second screw nuts, and the second screw nuts are threadedly connected to the second screws. The bottom end of the second screw nut is fixed with a second guide cylinder, and the second guide cylinder is slidably covered on the sixth guide rod, and the top of the two second screw nuts is respectively fixed with second support plates, and the top surfaces of the two second support plates are provided with the same second frame for placing the second mold.

[0011] Preferably, the second frame and the first frame are respectively provided with through grooves at the center of the top surfaces for placing the second mold and the first mold, and a number of cross bars are fixed horizontally in the through grooves. The bottom surfaces of the first mold and the second mold are both provided with grooves for embedding the cross bars. The second mold and the first mold are respectively slid up and down in the through grooves on the second frame and the first frame, and the second mold and the first mold are both composed of an upper mold and a lower mold. One side of the top surface of the upper mold is hinged to one side of the bottom surface of the lower mold, and a handle for opening the mold is fixed on one side of the upper mold.

[0012] Preferably, the mold opening structure includes a fifth hydraulic cylinder on both sides of the top surface of the symmetrically hinged operating table, and the telescopic ends of the two fifth hydraulic cylinders are respectively hinged with a rocking arm, and the bottom end of the rocking arm is hinged with a connecting plate through a pin shaft. The connecting plate is fixed on the top surface of the operating table, and a push rod is fixedly connected between the tops of the two rocking arms.

[0013] Preferably, first guide plates for limiting the first frame are fixed on the two opposite walls of the support plates on both sides of the first conveying structure, and second guide plates for limiting the second frame are fixed on the two opposite walls of the support plates on both sides of the second conveying structure.

[0014] Preferably, the movable structure includes a sixth hydraulic cylinder fixed on the side walls of the two support plates, the telescopic ends of the two sixth hydraulic cylinders respectively penetrate the two support plates and are fixedly connected to the two U-shaped frames, a seventh guide rod is fixed on the side walls of the U-shaped frame, and the other end of the seventh guide rod penetrates the support plate and is slidably connected to the contact point with it.

[0015] Compared with the existing technology, the beneficial effect of the present invention is: through the setting of the first conveying structure and the second conveying structure, the first mold and the second mold continuously operate on the first conveying structure and the second conveying structure in turn, and automatic heating and automatic cooling are effectively realized during the operation to achieve the purpose of fully automatic operation. The coordinated use of the first conveying structure and the second conveying structure can effectively transfer the first mold and the second mold in turn to the cooling zone between the upper cold press plate and the lower cold press plate and the heating zone between the upper hot press plate and the lower hot press plate, and through the setting of the mold opening structure, the first mold and the second mold moved to the operating table can be automatically opened, and the staff only needs to be responsible for adding materials and demolding to take out the molded products. Therefore, this molding machine can effectively save the workload of workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a perspective view of the structure of the present invention;

[0017] Figure 2 It is the three-dimensional structure of the present invention Figure 1 ;

[0018] Figure 3 It is the three-dimensional structure of the present invention Figure 2 ;

[0019] Figure 4 It is a cross-sectional view of the structure of the present invention.

[0020] In the figure: operating table 1, support plate 2, first horizontal plate 3, second horizontal plate 4, first hydraulic cylinder 5, first guide rod 6, third hydraulic cylinder 7, third guide rod 8, second hydraulic cylinder 9, second guide rod 10, fourth hydraulic cylinder 11, fourth guide rod 12, upper cold press plate 13, upper hot press plate 14, lower cold press plate 15, lower hot press plate 16, PLC controller 17, control panel 18, sixth hydraulic cylinder 19, seventh guide rod 20, first mold 21, second mold 22, handle 23, connecting plate 24, fifth hydraulic cylinder 25, swing arm 26, push rod 27, fixed plate 28, mounting plate 29, first motor 30, first lead screw 31, first guide plate 32, U-shaped frame 33, first lead screw nut 34, fifth guide rod 35, first support plate 36, first frame 37, sixth guide rod 38, second lead screw 39, second lead screw nut 40, second guide cylinder 41, second support plate 42, second frame 43, second guide plate 44, first guide cylinder 45, second motor 46, cross bar 47. DETAILED DESCRIPTION

[0021] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0022] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 As shown, a fully automatic EVA secondary hot and cold forming machine includes an operating table 1, two support plates 2 are symmetrically fixed on one side of the operating table 1, a control panel 18 and a PLC controller 17 are fixedly installed on the side wall of one of the support plates 2, a first horizontal plate 3 and a second horizontal plate 4 are fixed parallel to each other above and below the two support plates 2, a hot pressing structure and a cold pressing structure are provided between the two support plates 2, the cold pressing structure is arranged near the operating table 1, the hot pressing structure and the cold pressing structure are both installed on the first horizontal plate 3 and the second horizontal plate 4, a first conveying structure and a second conveying structure are provided between the first horizontal plate 3 and the second horizontal plate 4, the first conveying structure is arranged at the lower end of the second conveying structure, a first mold 21 is provided on the first conveying structure, and a second mold 22 is provided on the second conveying structure, a moving structure for moving the second mold 22 is fixed on the side walls of the two support plates 2, and a mold opening structure is fixed on the operating table 1 near the first conveying structure.

[0023] The cold pressing structure includes a first hydraulic cylinder 5 and a second hydraulic cylinder 9 respectively fixed on the first cross plate 3 and the second cross plate 4. The telescopic end of the first hydraulic cylinder 5 penetrates the first cross plate 3 and is fixed with an upper cold pressing plate 13. The top surface of the upper cold pressing plate 13 is fixed with a first guide rod 6. The top end of the first guide rod 6 penetrates the first cross plate 3 and is slidably connected with the contact point therewith. The telescopic end of the second hydraulic cylinder 9 penetrates the second cross plate 4 and is fixed with a lower cold pressing plate 15. The bottom surface of the lower cold pressing plate 15 is fixed with a second guide rod 10. The bottom end of the second guide rod 10 penetrates the second cross plate 4 and is slidably connected with the contact point therewith. The lower cold pressing plate 15 is arranged corresponding to the upper cold pressing plate 13.

[0024] The hot pressing structure includes a third hydraulic cylinder 7 and a fourth hydraulic cylinder 11 respectively fixed on the first cross plate 3 and the second cross plate 4. The telescopic end of the third hydraulic cylinder 7 penetrates the first cross plate 3 and is fixed with an upper hot pressing plate 14. The top surface of the upper hot pressing plate 14 is fixed with a third guide rod 8. The top end of the third guide rod 8 penetrates the first cross plate 3 and is slidably connected with the contact point therewith. The telescopic end of the fourth hydraulic cylinder 11 penetrates the second cross plate 4 and is fixed with a lower hot pressing plate 16. The bottom surface of the lower hot pressing plate 16 is fixed with a fourth guide rod 12. The bottom end of the fourth guide rod 12 penetrates the second cross plate 4 and is slidably connected with the contact point therewith. The lower hot pressing plate 16 is arranged corresponding to the upper hot pressing plate 14.

[0025] The first conveying structure includes two mounting plates 29 symmetrically fixed on opposite surfaces of the two support plates 2, and a first motor 30 is fixedly mounted on the side walls of the two mounting plates 29 respectively, and the output shaft of the first motor 30 penetrates the mounting plate 29 and is fixed with a first screw 31, and the other end of the two first screws 31 is provided with the same fixing plate 28, and the fixing plate 28 is fixed to the top surface of the operating table 1, and the end of the first screw 31 is rotatably connected to the fixing plate 28 through a bearing, and the two first screws 31 are respectively covered with a first screw nut 34, and the first screw nut 34 is threadedly connected to the first screw 31, and the top surfaces of the two first screw nuts 34 are respectively fixed with a first supporting plate 36, and the top surfaces of the two first supporting plates 36 are provided with the same first frame 37 for placing the first mold 21, and the bottom end of the first screw nut 34 is fixed with a first guide cylinder 45, and the first guide cylinder 45 is slidingly sleeved with a fifth guide rod 35, one end of the fifth guide rod 35 is fixedly connected to the mounting plate 29, and the other end of the fifth guide rod 35 is fixedly connected to the fixing plate 28.

[0026] The second conveying structure includes two U-shaped frames 33, one end of the two U-shaped frames 33 is fixedly installed with a second motor 46, and each U-shaped frame 33 is provided with a second lead screw 39 and a sixth guide rod 38 in parallel, one end of the second lead screw 39 is rotatably connected to the inner wall of one side of the U-shaped frame 33 through a bearing, and the other end of the second lead screw 39 penetrates the inner wall of the other side of the U-shaped frame 33 and is fixedly connected to the output shaft of the second motor 46. The two ends of the sixth guide rod 38 are respectively fixedly connected to the inner walls on both sides of the U-shaped frame 33, and the two second lead screws 39 are symmetrically covered with second lead screw nuts 40, which are threadedly connected to the second lead screws 39. The bottom end of the second lead screw nut 40 is fixed with a second guide cylinder 41, which slides onto the sixth guide rod 38, and the top of the two second lead screw nuts 40 is fixed with a second support plate 42, and the top surface of the two second support plates 42 is placed with the same second frame 43 for placing the second mold 22.

[0027] The second frame body 43 and the first frame body 37 are respectively provided with through grooves at the center of the top surface for placing the second mold 22 and the first mold 21, and a number of cross bars 47 are fixed horizontally in the through grooves. The bottom surfaces of the first mold 21 and the second mold 22 are both provided with grooves for embedding the cross bars 47. The second mold 22 and the first mold 21 are respectively slidably arranged in the through grooves on the second frame body 43 and the first frame body 37, and the second mold 22 and the first mold 21 are both composed of an upper mold and a lower mold. One side of the top surface of the upper mold is hinged to one side of the bottom surface of the lower mold, and a handle 23 for opening the mold is fixed on one side of the upper mold.

[0028] The mold opening structure includes a fifth hydraulic cylinder 25 on both sides of the top surface of the symmetrically hinged operating table 1. The telescopic ends of the two fifth hydraulic cylinders 25 are respectively hinged with a rocking arm 26. The bottom end of the rocking arm 26 is hinged with a connecting plate 24 through a pin shaft. The connecting plate 24 is fixed on the top surface of the operating table 1. A push rod 27 is fixedly connected between the tops of the two rocking arms 26.

[0029] First guide plates 32 for limiting the first frame 37 are fixed to the opposite walls of the two support plates 2 on both sides of the first conveying structure, and second guide plates 44 for limiting the second frame 43 are fixed to the opposite walls of the two support plates 2 on both sides of the second conveying structure.

[0030] The movable structure includes a sixth hydraulic cylinder 19 fixed on the side walls of the two support plates 2. The telescopic ends of the two sixth hydraulic cylinders 19 respectively penetrate the two support plates 2 and are fixedly connected to the two U-shaped frames 33. A seventh guide rod 20 is fixed on the side walls of the U-shaped frame 33. The other end of the seventh guide rod 20 penetrates the support plate 2 and is slidably connected with the contact point therewith.

[0031] Working principle: When the present invention is used, Figure 1As shown, first, the control panel 18 is used to control the extension of the telescopic end of the fifth hydraulic cylinder 25 of the mold opening structure. At this time, the fifth hydraulic cylinder 25 lifts the push rod 27 through the swing arm 26. During the lifting process of the push rod 27, the handle 23 of the first mold 21 is hooked, and the upper mold is opened by the handle 23 to realize mold opening. The swing angle of the swing arm 26 is less than 90 degrees, ensuring that the handle 23 is always in contact with the push rod 27 in the mold opening state. At this time, the raw material is put into the lower mold, and then the control panel 18 is used to control the telescopic end of the fifth hydraulic cylinder 25 to retract to its original position, so that the upper mold is closed. When the fifth hydraulic cylinder 25 is retracted to its original position, the PLC controller 17 controls the extension of the telescopic end of the fourth hydraulic cylinder 11 during this process, and the lower hot pressing plate 16 is pressed against the bottom surface of the second mold 22 and is pressed against the bottom surface of the second mold 22 through the cross bar 47. Lift the second frame 43. At this time, the second frame 43 is suspended and separated from the second support plate 42. At this time, the PLC controller 17 controls the telescopic end of the third hydraulic cylinder 7 to extend, and squeezes the top of the second mold 22 through the upper hot pressing plate 14. At this time, the upper hot pressing plate 14 and the lower hot pressing plate 16 heat the second mold 22. When the fifth hydraulic cylinder 25 retracts to its original position, the PLC controller 17 controls the telescopic end of the fourth hydraulic cylinder 11 and the third hydraulic cylinder 7 to extend and retract to its original position. The heated second mold 22 and the second frame 43 fall back onto the second support plate 42. At this time, the PLC controller 17 starts the first motor 30 and the second motor 46. The two first motors 30 run synchronously, and drive the first screw nut 34 toward the mounting plate 29 through the first screw 31. Move until the first screw nut 34 moves the first frame 37 between the upper hot press plate 14 and the lower hot press plate 16, the first motor 30 stops running, and at the same time, the two second motors 46 run synchronously, moving the second screw nut 40 through the second screw 39, until the second screw nut 40 moves the second frame 43 between the upper cold press plate 13 and the lower cold press plate 15, the second motor 46 stops running, and at this time the PLC controller 17 first controls the telescopic end of the second hydraulic cylinder 9 to extend. When the telescopic end of the second hydraulic cylinder 9 extends, the second frame 43 and the second mold 22 are lifted by the lower cold press plate 15, and then the PLC controller 17 controls the telescopic end of the first hydraulic cylinder 5 to extend, so that the upper cold press plate 13 squeezes the second mold 22. At this time, the lower cold press plate 15 and the upper cold press plate 13 are cooling the second mold 22. During the cooling process, the PLC controller 17 controls the telescopic end of the sixth hydraulic cylinder 19 to retract. The telescopic ends of the two sixth hydraulic cylinders 19 retract synchronously, and the U-shaped frame 33 is driven to move synchronously during the retraction process. At this time, the two U-shaped frames 33 are respectively close to the two support plates 2, and the distance between the two U-shaped frames 33 becomes larger. At this time, the PLC controller 17 controls the telescopic end of the fourth hydraulic cylinder 11 to extend again. When the telescopic end of the fourth hydraulic cylinder 11 is extended, the first mold 21 and the first frame 37 are lifted through the lower hot press plate 16, and the first mold 21 and the first frame 37 are lifted to the upper end of the second conveying structure. Since the distance between the two U-shaped frames 33 of the second conveying structure becomes larger,Therefore, the first frame 37 will not touch the second conveying structure when it rises. At this time, the PLC controller 17 controls the telescopic end of the third hydraulic cylinder 7 to extend again, and the upper hot press plate 14 squeezes the first mold 21. The upper hot press plate 14 and the lower hot press plate 16 heat the first mold 21. At this time, the second mold 22 has been cooled by the lower cold press plate 15 and the upper cold press plate 13. The PLC controller 17 controls the first motor 30 to run and move the first support plate 36 to the lower end of the second mold 22. Then the PLC controller 17 controls the second hydraulic cylinder 9 and the telescopic end of the first hydraulic cylinder 5 to retract to their original positions. At this time, the second mold 22 falls on the first support plate 36. At this time, the PLC controller 17 controls the first motor 30 to run and move the first support plate 36 to the lower end of the second mold 22. The second mold 22, which has fallen onto the first support plate 36, is moved to the operating table 1 via the first lead screw 31. The initial steps are repeated, and the second mold 22 is opened via the mold opening mechanism. The worker takes out the product formed in the second mold 22 and adds new raw materials to the second mold 22. As the fifth hydraulic cylinder 25 of the mold opening mechanism retracts to its original position, the second mold 22 closes and the heating and cooling processes continue according to the above steps. As the device operates, the first mold 21 and the second mold 22 continuously rotate on the first conveying mechanism and the second conveying mechanism, effectively heating and cooling the molds during operation, achieving the purpose of fully automatic hot and cold EVA forming.

[0032] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A fully automatic EVA secondary hot and cold forming machine, comprising an operating table (1), wherein two support plates (2) are fixed symmetrically on one side of the operating table (1), a control panel (18) and a PLC controller (17) are fixedly installed on the side wall of one of the support plates (2), a first transverse plate (3) and a second transverse plate (4) are fixed in parallel above and below between the two support plates (2), a hot pressing structure and a cold pressing structure are provided between the two support plates (2), the cold pressing structure is arranged near the operating table (1), the hot pressing structure and the cold pressing structure are both installed on the first transverse plate (3) and the second transverse plate (4), a first conveying structure and a second conveying structure are provided between the first transverse plate (3) and the second transverse plate (4), the first conveying structure is arranged at the lower end of the second conveying structure, a first mold (21) is provided on the first conveying structure, and a second mold (22) is provided on the second conveying structure, a moving structure for moving the second mold (22) is fixedly provided on the side walls of the two support plates (2), and a mold opening structure is fixedly provided on the operating table (1) near the first conveying structure.

2. The fully automatic EVA secondary hot and cold forming machine according to claim 1, characterized in that: The cold pressing structure comprises a first hydraulic cylinder (5) and a second hydraulic cylinder (9) respectively fixed on the first transverse plate (3) and the second transverse plate (4), wherein the telescopic end of the first hydraulic cylinder (5) penetrates the first transverse plate (3) and is fixed with an upper cold pressing plate (13), and the top surface of the upper cold pressing plate (13) is fixed with a first guide rod (6), and the top end of the first guide rod (6) penetrates the first transverse plate (3) and is slidably connected with the contact portion thereof, and the telescopic end of the second hydraulic cylinder (9) penetrates the second transverse plate (4) and is fixed with a lower cold pressing plate (15), and the bottom surface of the lower cold pressing plate (15) is fixed with a second guide rod (10), and the bottom end of the second guide rod (10) penetrates the second transverse plate (4) and is slidably connected with the contact portion thereof, and the lower cold pressing plate (15) is arranged corresponding to the upper cold pressing plate (13), and the first hydraulic cylinder (5) and the second hydraulic cylinder (9) are respectively connected to an external hydraulic station pipeline through a conduit.

3. The fully automatic EVA secondary hot and cold forming machine according to claim 2, characterized in that: The hot pressing structure includes a third hydraulic cylinder (7) and a fourth hydraulic cylinder (11) respectively fixed on the first transverse plate (3) and the second transverse plate (4), wherein the telescopic end of the third hydraulic cylinder (7) penetrates the first transverse plate (3) and is fixed with an upper hot pressing plate (14), and the top surface of the upper hot pressing plate (14) is fixed with a third guide rod (8), and the top end of the third guide rod (8) penetrates the first transverse plate (3) and is slidably connected with the contact portion thereof, and the telescopic end of the fourth hydraulic cylinder (11) penetrates the second transverse plate (4) and is fixed with a lower hot pressing plate (16), and the bottom surface of the lower hot pressing plate (16) is fixed with a fourth guide rod (12), and the bottom end of the fourth guide rod (12) penetrates the second transverse plate (4) and is slidably connected with the contact portion thereof, and the lower hot pressing plate (16) is arranged corresponding to the upper hot pressing plate (14), and the third hydraulic cylinder (7) and the fourth hydraulic cylinder (11) are respectively connected to the pipeline of the external hydraulic station through a conduit, and the external hydraulic station is electrically connected to the control panel (18) and the PLC controller (17) through a wire.

4. The fully automatic EVA secondary hot and cold forming machine according to claim 3, characterized in that: The first conveying structure comprises two mounting plates (29) symmetrically fixed on opposite surfaces of the two support plates (2), and first motors (30) are fixedly mounted on the side walls of the two mounting plates (29), and the output shaft of the first motor (30) penetrates the mounting plate (29) and is fixed with a first lead screw (31), and the other ends of the two first lead screws (31) are provided with a same fixing plate (28), and the fixing plate (28) is fixed on the top surface of the operating table (1), and the end of the first lead screw (31) is rotatably connected to the fixing plate (28) through a bearing, and the two first lead screws (31) are respectively covered with a first lead screw nut (34), and the first lead screw nut (34) ) is threadedly connected to the first lead screw (31), the top surfaces of the two first lead screw nuts (34) are respectively fixed with first support plates (36), the top surfaces of the two first support plates (36) are placed with the same first frame (37) for placing the first mold (21), the bottom end of the first lead screw nut (34) is fixed with a first guide cylinder (45), the first guide cylinder (45) is slidably sleeved with a fifth guide rod (35), one end of the fifth guide rod (35) is fixedly connected to the mounting plate (29), and the other end of the fifth guide rod (35) is fixedly connected to the fixed plate (28), and the first motor (30) is electrically connected to the control panel (18) and the PLC controller (17) through a wire.

5. The fully automatic EVA secondary hot and cold forming machine according to claim 4, characterized in that: The second conveying structure includes two U-shaped frames (33), one end of each of the two U-shaped frames (33) is fixedly mounted with a second motor (46), and each of the U-shaped frames (33) is provided with a second lead screw (39) and a sixth guide rod (38) in parallel, one end of the second lead screw (39) is rotatably connected to the inner wall of one side of the U-shaped frame (33) through a bearing, and the other end of the second lead screw (39) penetrates the inner wall of the other side of the U-shaped frame (33) and is fixedly connected to the output shaft of the second motor (46), and the two ends of the sixth guide rod (38) are fixedly connected to the inner walls of both sides of the U-shaped frame (33). ) are symmetrically sleeved with second lead screw nuts (40), the second lead screw nuts (40) are threadedly connected to the second lead screw (39), a second guide cylinder (41) is fixed to the bottom end of the second lead screw nut (40), the second guide cylinder (41) is slidably sleeved on the sixth guide rod (38), and a second support plate (42) is fixed to the top of the two second lead screw nuts (40), and the top surface of the two second support plates (42) is placed with the same second frame (43) for placing the second mold (22), and the second motor (46) is electrically connected to the control panel (18) and the PLC controller (17) through a wire.

6. The fully automatic EVA secondary hot and cold forming machine according to claim 5, characterized in that: The second frame (43) and the first frame (37) are provided with through slots for placing the second mold (22) and the first mold (21) at the center of the top surface, respectively. A plurality of cross bars (47) are transversely fixed in the through slots. The bottom surfaces of the first mold (21) and the second mold (22) are provided with grooves for embedding the cross bars (47). The second mold (22) and the first mold (21) are respectively slidably arranged in the through slots on the second frame (43) and the first frame (37). The second mold (22) and the first mold (21) are both composed of an upper mold and a lower mold. One side of the top surface of the upper mold is hinged to one side of the bottom surface of the lower mold. A handle (23) for opening the mold is fixed to one side of the upper mold.

7. The fully automatic EVA secondary hot and cold forming machine according to claim 1, characterized in that: The mold opening structure includes a fifth hydraulic cylinder (25) on both sides of the top surface of the symmetrically hinged operating table (1), and the telescopic ends of the two fifth hydraulic cylinders (25) are respectively hinged with swing arms (26), and the bottom ends of the swing arms (26) are hinged with a connecting plate (24) through a pin shaft. The connecting plate (24) is fixed on the top surface of the operating table (1), and a push rod (27) is fixedly connected between the tops of the two swing arms (26). The fifth hydraulic cylinder (25) is connected to the pipeline of the external hydraulic station through a conduit.

8. The fully automatic EVA secondary hot and cold forming machine according to claim 2, characterized in that: First guide plates (32) for limiting the position of the first frame (37) are fixed to the opposing walls of the two support plates (2) on both sides of the first conveying structure, and second guide plates (44) for limiting the position of the second frame (43) are fixed to the opposing walls of the two support plates (2) on both sides of the second conveying structure.

9. The fully automatic EVA secondary hot and cold forming machine according to claim 5, characterized in that: The movable structure comprises a sixth hydraulic cylinder (19) fixed on the side walls of the two support plates (2), the telescopic ends of the two sixth hydraulic cylinders (19) respectively penetrate the two support plates (2) and are fixedly connected to the two U-shaped frames (33), a seventh guide rod (20) is fixed on the side wall of the U-shaped frame (33), the other end of the seventh guide rod (20) penetrates the support plate (2) and is slidably connected to the contact portion thereof, and the sixth hydraulic cylinder (19) is connected to an external hydraulic station pipeline via a conduit.

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