Eva secondary foaming molding machine

Abstract

The utility model discloses EVA secondary foaming forming machine, including frame, the vulcanization heating device and cooling device of setting in the middle part of frame, be used for covering the upper vacuum device of vulcanization heating device, and be used for covering the lower vacuum device of cooling device, upper vacuum device includes the upper vacuum cover of surrounding upper heating plate periphery side and first drive arrangement, and lower vacuum device includes the lower vacuum cover of surrounding lower cooling plate periphery side and second drive arrangement, be equipped with the mounting seat of fixed on the frame between vulcanization heating device and cooling device, the mould transfer device for transferring mould and the lifting mechanism for driving mould transfer device to lift are still equipped with on both sides of frame, the utility model discloses EVA secondary foaming forming machine completes the loading and unloading work of mould under the condition of not stopping, has improved production efficiency, and the loading and unloading work of mould is completed by this equipment, not only reduces the damage rate of machine platform, and loading and unloading efficiency is high, reduces the labor intensity of worker even more, has reduced the personal safety hidden danger of worker.

Description

Technical Field

[0001] This utility model relates to the field of foam molding machine technology, specifically to an EVA secondary foam molding machine. Background Technology

[0002] EVA material is widely used in shoe midsoles due to its advantages such as being lightweight, biodegradable, reusable, and environmentally friendly when burned. Current shoe midsole manufacturing primarily involves placing granular EVA material into a mold cavity formed by a lower mold. The upper mold presses down while simultaneously heating both molds. After the granular EVA material foams and solidifies within the mold, the foamed midsole is removed from both molds, resulting in a midsole with a cross-section that is narrower at the bottom and wider at the top.

[0003] The traditional loading and unloading methods for EVA secondary foaming molding machine molds are: (1) loading and unloading molds from the operating table by workers; (2) loading and unloading molds directly at the mold station. Both are carried out in standby mode, which reduces production efficiency. Moreover, relying on manual operation not only results in high labor intensity, but also easily damages the machine and seriously threatens people's lives. Utility Model Content

[0004] In order to overcome the above-mentioned shortcomings in the existing technology, the purpose of this utility model is to provide an EVA secondary foaming molding machine.

[0005] This utility model is achieved through the following technical solution: an EVA secondary foaming molding machine, including a frame, a vulcanization heating device and a cooling device disposed in the middle of the frame, an upper vacuum device for covering the vulcanization heating device, and a lower vacuum device for covering the cooling device. A mounting base fixed to the frame is provided between the vulcanization heating device and the cooling device. The vulcanization heating device includes an upper heating plate that can move up and down and a lower heating plate fixed to the mounting base. The cooling device includes a lower cooling plate that can move up and down and an upper cooling plate fixed to the mounting base. The upper vacuum device includes an upper vacuum cover surrounding the upper heating plate and a first driving device for driving the upper vacuum cover to move up and down. The lower vacuum device includes a lower vacuum cover surrounding the lower cooling plate and a second driving device for driving the lower vacuum cover to move up and down. A mold transfer device for transferring molds and a lifting mechanism for driving the mold transfer device to move up and down are also provided on both sides of the frame.

[0006] Preferably, the mold transfer device of this utility model includes a mold transfer frame and a middle mold frame that can move on the mold transfer frame. The mold transfer frame is provided with a transfer motor. The output end of the transfer motor is provided with a first gear. A driven gear meshing with the first gear is provided on one side of the first gear. The first gear and the driven gear are respectively provided with a first swing rod and a second swing rod for pushing the middle mold frame to move. One end of the first swing rod and the second swing rod are provided with a positioning post that is movably connected to the middle mold frame. Guide grooves for the positioning post to be inserted are provided on both sides of one end face of the middle mold frame.

[0007] Preferably, the lifting mechanism of this utility model includes support components connected to both sides of the frame. Each support component includes two fixed plates arranged vertically. A lifting rod for the mold transfer frame to move vertically is provided between the two fixed plates. A rotatable driven gear shaft is provided between the two top fixed plates, and a rotatable driving gear shaft is provided between the two bottom fixed plates. Driven gears are provided at both ends of the driven gear shaft, and driving gears are provided at both ends of the driving gear shaft. The driven gears and driving gears on the same side are connected by chain drive. A slider is provided on the lifting rod and fixedly connected to the mold transfer frame. A clamp is provided on the slider and fixed to the chain. A lifting motor is provided on one side of the bottom fixed plate. The output of the lifting motor is connected to a reducer. The output end of the reducer is drivenly connected to one end of the driving gear shaft.

[0008] Preferably, the mold transfer frame of this invention is provided with multiple rollers on both sides to assist the movement of the middle mold frame into the vulcanization heating or cooling area within the machine frame.

[0009] Preferably, the mold transfer frame of this utility model is further provided with a limiting seat on one side for limiting the movement of the middle mold frame within a certain stroke.

[0010] Preferably, the middle mold frame of this utility model is a square frame with a hollow structure in the middle. The inner side of the hollow structure is provided with a limiting platform for fixing the mold, and the limiting platform is formed on the middle mold frame.

[0011] Preferably, the frame of this utility model is provided with a third driving device for driving the upper heating plate to move.

[0012] Preferably, the third driving device of this utility model is a lifting cylinder.

[0013] Preferably, the frame of this utility model is provided with a fourth driving device for driving the lower cooling plate to move.

[0014] Preferably, the fourth driving device of this utility model is a lifting cylinder.

[0015] Compared with the prior art, this utility model has the following advantages and beneficial effects: This utility model is equipped with a vulcanization heating device, a cooling device, an upper vacuum device, a lower vacuum device, a mold transfer device, and a lifting mechanism. The mold loading and unloading work can be completed without stopping the EVA secondary foaming molding machine, which improves production efficiency. Moreover, the mold loading and unloading work completed by this equipment not only reduces the damage rate of the machine, but also has high loading and unloading efficiency, further reducing the labor intensity of workers and reducing the personal safety hazards of workers. Attached Figure Description

[0016] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the overall structure of the frame of this utility model; Figure 3 for Figure 2 AA-direction sectional view of the structure; Figure 4 This is a schematic diagram of the assembly of the mold transfer device and the lifting mechanism of this utility model; Figure 5 for Figure 4 A structural diagram showing the placement of the middle mold frame and the mold; Figure 6 This is a schematic diagram of the bottom structure of the mold transfer frame of this utility model; Figure 7 for Figure 6 Internal structure diagram; Figure 8 This is a schematic diagram of the structure of the mold frame in this utility model; The reference numerals used in the above figures are explained as follows: 1—Frame, 10—Third drive unit, 11—Fourth drive unit; 2—Vulcanization heating device, 20—Upper heating plate, 21—Lower heating plate; 3—Cooling device, 30—Lower cooling plate, 31—Upper cooling plate; 4—Upper vacuum device, 40—Upper vacuum shroud, 41—First drive device; 5—Lower vacuum device; 50—Lower vacuum shroud; 51—Second drive device; 6—Mounting base; 7—Mold; 8—Mold transfer device, 80—Mold transfer frame, 81—Middle mold frame, 82—Transfer motor, 83—First gear, 84—Passive gear, 85—First rocker arm, 86—Second rocker arm, 87—Positioning pin, 88—Guide groove, 800—Roller, 801—Limit seat, 840—Hollow structure, 841—Limit platform; 9—Lifting mechanism, 90—Supporting component, 91—Fixed plate, 92—Lifting rod, 93—Passive gear shaft, 94—Driving gear shaft, 95—Passive gear, 96—Driving gear, 97—Chain, 98—Slider, 99—Clamping seat, 910—Lifting motor, 911—Reducer. Detailed Implementation

[0017] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0018] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0020] Reference Figures 1 to 8As shown, the EVA secondary foaming molding machine includes a frame 1, a vulcanizing heating device 2 and a cooling device 3 disposed in the middle of the frame 1, an upper vacuum device 4 for covering the vulcanizing heating device 2, and a lower vacuum device 5 for covering the cooling device 3. A mounting base 6 fixed to the frame 1 is provided between the vulcanizing heating device 2 and the cooling device 3. The vulcanizing heating device 2 includes an upper heating plate 20 that can move up and down and a lower heating plate 21 fixed to the mounting base 6. The cooling device 3 includes a lower cooling plate 30 that can move up and down and an upper cooling plate 31 fixed to the mounting base 6. The upper vacuum device 4 includes an upper vacuum cover 40 surrounding the upper heating plate 20. The upper vacuum cover 40 is driven up and down by a first drive device 41. The lower vacuum device 5 includes a lower vacuum cover 50 surrounding the lower cooling plate 30 and a second drive device 51 for driving the lower vacuum cover 50 up and down. The frame 1 is also provided with a mold transfer device 8 for transferring the mold 7 and a lifting mechanism 9 for driving the mold transfer device 8 up and down. The first drive device 41 and the second drive device 51 are telescopic mechanisms, such as cylinders or hydraulic cylinders. Telescopic mechanisms are conventional technologies in the prior art. Therefore, the telescopic mechanism will not be specifically described in this embodiment, as long as it can drive the upper vacuum cover 40 and the lower vacuum cover 50 up and down.

[0021] The mold transfer device 8 includes a mold transfer frame 80 and a middle mold frame 81 that can move on the mold transfer frame 80. The mold 7 for molding EVA products is disposed inside the middle mold frame 81. A transfer motor 82 is disposed on the mold transfer frame 80. The output end of the transfer motor 82 is provided with a first gear 83, which is a main gear. The first gear 83 can be driven to rotate by the operation of the transfer motor. A second gear 84 is disposed on one side of the first gear 83 and meshes with it. A first rocker arm 85 and a second rocker arm 86 are respectively provided on the first gear 83 and the second gear 84 for pushing the middle mold frame 81 to move. The first swing arm 85 and the second swing arm 86 are each provided with a positioning post 87 at one end, which is movably connected to the middle mold frame 81. The two sides of one end face of the middle mold frame 81 are provided with guide grooves 88 for the positioning post 87 to be inserted. When the transfer motor works 82, it can drive the first gear 83 and the second gear 84 to drive the first swing arm 85 and the second swing arm 86 to swing simultaneously, so that the first swing arm 85 and the second swing arm 86 drive the middle mold frame 81 to move back and forth, and push the middle mold frame into the vulcanizing heating device 2 or the cooling device 3, or remove the middle mold frame 81 from the vulcanizing heating device 2 or the cooling device 3, thereby replacing the problems of cumbersome manual operation and high labor intensity.

[0022] In addition, the aforementioned lifting mechanism 9 includes support components 90 connected to both sides of the frame 1. Each support component 90 includes two fixed plates 91 arranged vertically. A lifting rod 92 for the mold transfer frame 80 to move vertically is provided between the two fixed plates 91. A rotatable driven gear shaft 93 is provided between the two top fixed plates 91, and a rotatable driving gear shaft 94 is provided between the two bottom fixed plates 91. Driven gears 95 are provided at both ends of the driven gear shaft 93, and driving gears 96 are provided at both ends of the driving gear shaft 94. The driven gears 95 on the same side are connected to the driving gear shaft 94. Gear 96 is connected by chain 97. The lifting rod 92 is provided with a slider 98 fixedly connected to the mold transfer frame 80. The slider 98 is provided with a clamp 99 fixed to the chain. A lifting motor 910 is provided on one side of the bottom fixed plate 91. The output of the lifting motor 910 is connected to a reducer 911. The output end of the reducer 911 is connected to one end of the drive gear shaft 94. Through the lifting mechanism, the mold transfer device can send or remove molds to the vulcanizing heating device, and can also send or remove molds to the cooling device, thereby achieving high-efficiency production.

[0023] To facilitate easier and smoother insertion and removal of the middle mold frame, multiple rollers 800 are provided on both sides of the mold transfer frame 80 to assist in the forward and backward movement of the middle mold frame 81. A limit seat 801 is also provided on one side of the mold transfer frame 80 to limit the movement of the middle mold frame 81 within a certain stroke. A detection switch is also installed at the limit seat 801 to stop the middle mold frame 81 when it reaches its designated position. Of course, the absence of a detection switch does not affect operation; the motor can be manually controlled to start and stop.

[0024] In this embodiment, the middle mold frame 81 is a square frame with a hollow structure 840 in the middle. The inner side of the hollow structure 840 is provided with a limiting platform 841 for fixing the mold 7. The limiting platform 841 is formed on the middle mold frame 81, and both ends of the mold 7 can be locked on the limiting platform.

[0025] In order to enable the upper heating plate 20 to move up and down so that the upper heating plate 20 can close the mold in the lower heating plate, a third driving device 10 for driving the upper heating plate 20 is provided on the frame 1. The third driving device 10 is a lifting oil cylinder.

[0026] In order to enable the lower cooling plate 30 to move up and down so that the lower cooling plate 30 and the upper cooling plate 31 can cool the mold after molding and demold quickly, a fourth driving device 11 is provided on the frame 1 to drive the lower cooling plate 30 to move. The fourth driving device 11 is a lifting oil cylinder.

[0027] The working principle of this utility model is as follows: First, the mold transfer device 8 on one side of the frame 1 is raised to the position of the vulcanization heating device 2 by the lifting mechanism 9, and the mold 7 after loading is sent into the vulcanization heating device 2 for heating and foaming. After foaming, the mold 7 is taken out by the mold transfer device 8 on the other side of the frame 1 to remove the middle mold frame 81. Then, the mold transfer device 8 is lowered to the position of the cooling device by the lifting mechanism and sent into the cooling device for cooling. After cooling, the mold is taken out by the mold transfer device 8 on one side and the EVA product inside the mold is taken out. Then, the mold is sent back into the vulcanization heating device 2 for heating and foaming. The above actions are repeated in sequence, so that there is no need for manual loading and unloading of molds, which not only improves production efficiency, but also reduces the labor intensity of workers and reduces the personal safety hazards of workers.

[0028] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An EVA secondary foaming molding machine, comprising a frame (1), a vulcanization heating device (2) and a cooling device (3) disposed in the middle of the frame (1), an upper vacuum device (4) for covering the vulcanization heating device (2), and a lower vacuum device (5) for covering the cooling device (3), characterized in that: The vulcanizing heating device (2) and the cooling device (3) are provided with a mounting base (6) fixed on the frame (1). The vulcanizing heating device (2) includes an upper heating plate (20) that can move up and down and a lower heating plate (21) fixed on the mounting base. The cooling device (3) includes a lower cooling plate (30) that can move up and down and an upper cooling plate (31) fixed on the mounting base. The upper vacuum device (4) includes an upper vacuum cover (40) surrounding the upper heating plate (20) and a first driving device (41) for driving the upper vacuum cover (40) to move up and down. The lower vacuum device (5) includes a lower vacuum cover (50) surrounding the lower cooling plate (30) and a second driving device (51) for driving the lower vacuum cover (50) to move up and down. The frame (1) is also provided with a mold transfer device (8) for transferring the mold (7) and a lifting mechanism (9) for driving the mold transfer device to move up and down.

2. The EVA secondary foaming molding machine according to claim 1, characterized in that: The mold transfer device (8) includes a mold transfer frame (80) and a middle mold frame (81) that can move on the mold transfer frame (80). The mold transfer frame (80) is provided with a transfer motor (82). The output end of the transfer motor (82) is provided with a first gear (83). A second gear (84) meshes with the first gear (83) on one side. The first gear (83) and the second gear (84) are respectively provided with a first rocker arm (85) and a second rocker arm (86) for pushing the middle mold frame (81) to move. One end of the first rocker arm (85) and the second rocker arm (86) are provided with a positioning post (87) that is movably connected to the middle mold frame (81). The two sides of one end face of the middle mold frame (81) are provided with guide grooves (88) for the positioning post (87) to be inserted.

3. The EVA secondary foaming molding machine according to claim 2, characterized in that: The lifting mechanism (9) includes support components (90) connected to both sides of the frame (1). Each support component (90) includes two fixed plates (91) arranged vertically. A lifting rod (92) for the mold transfer frame (80) to move vertically is provided between the two fixed plates (91). A rotatable passive gear shaft (93) is provided between the two top fixed plates (91), and a rotatable active gear shaft (94) is provided between the two bottom fixed plates (91). Passive gears (95) are provided at both ends of the passive gear shaft (93), and the active gear shaft (94) is provided at both ends. Both ends are provided with driving gears (96), and the driven gear (95) on the same side is connected to the driving gear (96) by a chain (97). The lifting rod (92) is provided with a slider (98) fixedly connected to the mold transfer frame (80). The slider (98) is provided with a clamp (99) fixed to the chain. The fixed plate (91) at the bottom is provided with a lifting motor (910) on one side. The output of the lifting motor (910) is connected to a reducer (911). The output end of the reducer (911) is connected to one end of the driving gear shaft (94).

4. The EVA secondary foaming molding machine according to claim 3, characterized in that: The mold transfer frame (80) is provided with multiple rollers (800) on both sides to assist the middle mold frame (81) in moving to the vulcanization heating or cooling area in the machine frame.

5. The EVA secondary foaming molding machine according to claim 4, characterized in that: The mold transfer frame (80) is also provided with a limiting seat (801) on one side to limit the movement of the middle mold frame (81) within a certain stroke.

6. The EVA secondary foaming molding machine according to claim 5, characterized in that: The middle mold frame (81) is a square frame with a hollow structure (840) in the middle. The inner side of the hollow structure (840) is provided with a limiting platform (841) for fixing the mold (7). The limiting platform (841) is formed on the middle mold frame (81).

7. The EVA secondary foaming molding machine according to claim 1, characterized in that: The frame (1) is provided with a third drive device (10) for driving the upper heating plate (20) to move.

8. The EVA secondary foaming molding machine according to claim 7, characterized in that: The third driving device (10) is a lifting cylinder.

9. The EVA secondary foaming molding machine according to claim 1, characterized in that: The frame (1) is provided with a fourth drive device (11) for driving the lower cooling plate (30) to move.

10. The EVA secondary foaming molding machine according to claim 9, characterized in that: The fourth drive device (11) is a lifting cylinder.

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