Vacuum cover mechanism of shoe sole oil press

Abstract

The utility model discloses a kind of vacuum cover mechanisms of shoe sole oil press, including rack, the vulcanization heating device and cooling device being set in the middle part of rack, for covering the upper vacuum device of vulcanization heating device, and for covering the lower vacuum device of cooling device, vulcanization heating device is equipped with mounting seat fixed on rack between cooling device, vulcanization heating device includes the upper heating plate that can move up and down and the lower heating plate fixed on mounting seat, cooling device includes the lower cooling plate that can move up and down and the upper cooling plate fixed on mounting seat, upper vacuum device includes the upper vacuum cover around the upper heating plate periphery and the first driving device for driving upper vacuum cover up and down movement, first through-hole for pumping is provided on upper vacuum cover, second driving device for driving upper heating plate movement is provided on rack, the utility model material is heated under vacuum environment, avoid the problem of burning, yellowing or generating bubble when heating occurs.

Description

Technical Field

[0001] This utility model relates to the technical field of shoe sole processing equipment, specifically to a vacuum hood mechanism of a shoe sole hydraulic press. 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. However, since the structure of the human foot is wider at the bottom and narrower at the top, meaning the cross-section of the foot is the widest and gradually narrows upwards (towards the instep), the midsole of the shoe with the above-mentioned shape still needs to undergo secondary processing to conform to the ergonomic shape. The reason for using secondary foaming molding is that the EVA material undergoes a volume expansion process during heating and molding. If the bottom of the lower mold cavity is larger than the top of the lower mold cavity, that is, if the ergonomic foot shape is met in one-time molding, the midsole will not be able to be removed from the lower mold cavity. Furthermore, the presence of air inside the mold makes it impossible to control the expansion ratio, resulting in an increased defect rate of the product. Utility Model Content

[0003] In order to overcome the above-mentioned shortcomings in the existing technology, the purpose of this utility model is to provide a vacuum hood mechanism for a shoe sole hydraulic press.

[0004] This utility model is achieved through the following technical solution: a vacuum hood mechanism for a shoe sole hydraulic press, comprising 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 hood surrounding the upper heating plate and a first driving device for driving the upper vacuum hood to move up and down. The first driving device is a first lifting cylinder. The upper vacuum hood is provided with a first through hole for vacuuming. A second driving device for driving the upper heating plate is provided on the frame. The second driving device is the first lifting cylinder.

[0005] Preferably, the upper vacuum cover of the present invention is provided with a first through hole for the piston rod of the first lifting cylinder to pass through, and a linear bearing is provided in the first through hole. After the piston rod of the first lifting cylinder passes through the linear bearing, it is connected to the upper heating plate.

[0006] Preferably, the piston rod end of the first lifting cylinder of this utility model is provided with an upper tray, the upper tray is provided with an upper heat insulation plate, and the upper heating plate is fixed on the upper heat insulation plate.

[0007] Preferably, the upper heating plate of the present invention is provided with a first channel communicating with the first through hole. One end of the first channel penetrates the upper surface of the upper heating plate so that an air outlet is formed on the upper surface of the upper heating plate, and the other end penetrates the lower surface of the lower heating plate so that an air inlet is formed on the lower surface of the upper heating plate.

[0008] Preferably, in this invention, the first channel is connected to the first through hole via a first pipe.

[0009] Preferably, the lower vacuum device of this invention includes a lower vacuum cover surrounding the lower cooling plate and a third driving device for driving the lower vacuum cover to move up and down, the third driving device being a second lifting cylinder.

[0010] Preferably, the frame of this utility model is provided with a fourth driving device for driving the lower cooling plate to move up and down, and the fourth driving device is a second lifting cylinder.

[0011] Preferably, both the upper and lower cooling plates of this utility model are provided with cooling channels and water inlet holes and water outlet holes communicating with both ends of the cooling channels. The water inlet holes and water outlet holes of the lower cooling plate are connected to a second pipe, the upper part of which penetrates the lower vacuum cover and is sealed to the lower vacuum cover.

[0012] Preferably, the upper vacuum cover and the lower vacuum cover of this invention are each provided with a sealing device on the connection surface with the mounting base.

[0013] Preferably, the sealing device of this utility model is a sealing ring.

[0014] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0015] 1. This utility model uses a first driving device to drive the upper vacuum cover to move downward and form a sealed space with the mounting base. The sealed space is evacuated through the first through hole. After the vacuum is completed, the upper heating plate is driven downward by the second driving device to heat the mold, so that the product in the mold can be vulcanized. The material is heated in a vacuum environment, which avoids the problems of scorching, yellowing or bubble formation during heating.

[0016] 2. This utility model has a piston rod of the first driving device passing through a linear bearing in the upper vacuum hood, so that the first driving device can drive the upper heating plate to move up and down to realize the mold closing function. At the same time, the second driving device can drive the upper vacuum hood to move up and down. That is, there is no need to distinguish the order of the first driving device and the second driving device; thus solving the problem of simple operation. Attached Figure Description

[0017] 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:

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 for Figure 1 AA-direction sectional view of the structure;

[0020] Figure 3 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 4 This is a cross-sectional schematic diagram of the upper and lower heating plates of this utility model;

[0022] Figure 5 This is a front view of the upper and lower heating plates of this utility model;

[0023] Figure 6 This is a schematic diagram of the back of the upper and lower heating plates of this utility model;

[0024] Figure 7 This is a cross-sectional schematic diagram of the upper and lower cooling plates of this utility model;

[0025] Figure 8 This is a three-dimensional structural diagram of the upper and lower cooling plates of this utility model;

[0026] The reference numerals used in the above figures are explained as follows:

[0027] 1—Frame; 10—Second drive unit; 11—Fourth drive unit; 2—Vulcanizing heating device; 20—Upper heating plate; 21—Lower heating plate; 22—Upper tray; 23—Upper heat insulation plate; 24—First channel; 3—Cooling device; 30—Lower cooling plate; 31—Upper cooling plate; 300—Cooling channel; 301—Water inlet; 302—Water outlet; 4—Upper vacuum device; 40—Upper vacuum cover; 41—First drive unit; 42—First through hole; 43—First perforation; 44—Linear bearing; 5—Lower vacuum device; 50—Lower vacuum cover; 51—Third drive unit; 52—Sealing device; 6—Mounting base; 7—First pipe; 8—Second pipe. Detailed Implementation

[0028] 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.

[0029] 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.

[0030] 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.

[0031] Reference Figures 1 to 8As shown, the vacuum hood mechanism of the shoe sole hydraulic press 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 hood 40 surrounding the upper heating plate 20 and a mechanism for driving the upper vacuum hood 40 to move up and down. The first driving device 41 is a first lifting cylinder. The upper vacuum shroud 40 is provided with a first through hole 42 for vacuuming. The frame 1 is provided with a second driving device 10 for driving the upper heating plate 20 to move. The second driving device 10 is a first lifting cylinder. The upper vacuum shroud 40 is driven to move downward by the first driving device 41 to form a sealed space with the mounting base 6. The sealed space is evacuated through the first through hole 42. After the vacuuming is completed, the upper heating plate 20 is driven to move downward by the second driving device 10 to heat the mold, so that the product in the mold completes the vulcanization heating. The material is heated in a vacuum environment to avoid the problems of scorching, yellowing or bubble formation during heating.

[0032] Specifically, the upper vacuum cover 40 is provided with a first through hole 43 through which the piston rod of the first lifting cylinder passes. A linear bearing 44 is provided on the first through hole 43. After the piston rod of the first lifting cylinder passes through the linear bearing 44, it is connected to the upper heating plate 20, so that the first driving device 41 can drive the upper heating plate 20 to move up and down to realize the mold closing function. At the same time, the second driving device 10 can drive the upper vacuum cover 40 to move up and down. That is, there is no need to distinguish the order of the first driving device and the second driving device. The mold can be closed first and then the vacuum cover can be closed, or the vacuum cover can be closed first and then the mold can be closed, thus solving the problem of simple operation.

[0033] Additionally, an upper tray 22 is provided at the piston rod end of the first lifting cylinder. An upper heat insulation plate is provided on the upper tray 22. The upper heating plate 20 is fixed on the upper heat insulation plate 23. The upper heating plate 20 is provided with a first channel 24 that communicates with the first through hole 42. One end of the first channel penetrates the upper surface of the upper heating plate 20 so that an air outlet 25 is formed on the upper surface of the upper heating plate 20. The other end penetrates the lower surface of the lower heating plate 21 so that an air inlet 26 is formed on the lower surface of the upper heating plate 20. The first channel 24 is connected to the first through hole 42 through a first pipe 7. During operation, the lower surface of the upper heating plate 20 faces the mold. When the upper heating plate 20 moves downward and closes with the mold, a vacuum is drawn into the mold through the first pipe 7, and then the mold is heated so that the product inside the mold completes the vulcanization heating.

[0034] Furthermore, in this embodiment, the lower vacuum device 5 includes a lower vacuum cover 50 surrounding the lower cooling plate 30 and a third drive device 51 for driving the lower vacuum cover 50 to move up and down. The third drive device 51 is a second lifting cylinder.

[0035] Furthermore, in this embodiment, a fourth driving device 11 is provided on the frame 1 to drive the lower cooling plate 30 to move up and down. The fourth driving device 11 is a second lifting cylinder.

[0036] Furthermore, in this embodiment, both the lower cooling plate 30 and the upper cooling plate 31 are provided with cooling channels 300 and water inlets 301 and water outlets 302 that communicate with both ends of the cooling channels 300. The water inlets and water outlets of the lower cooling plate 30 are connected to second pipes 8. The upper part of the second pipes 8 penetrates the lower vacuum cover 50 and is sealed to the lower vacuum cover 50. The second pipes 8 on the water inlets and water outlets can provide water circulation cooling during cooling, which facilitates demolding of the vulcanized and heated products.

[0037] It should be noted that sealing devices 50, which are sealing rings, are provided on the connection surfaces of the upper vacuum cover 40 and the lower vacuum cover 50 with the mounting base 6. Specifically, grooves are formed on the connection surfaces of the upper vacuum cover 40 and the lower vacuum cover 50 with the mounting base 6, and the sealing rings are embedded in the grooves. This allows the upper vacuum cover 40 and the lower vacuum cover 50 to seal the seams of the moving parts with the mounting base 6 by setting the sealing rings. The airtightness of the sealed space formed between the upper vacuum cover 40, the lower vacuum cover 50 and the mounting base prevents air from seeping in during vacuuming.

[0038] 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. A vacuum hood mechanism for a shoe sole hydraulic press, comprising 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), wherein a mounting base (6) fixed on the frame (1) is provided between the vulcanizing heating device (2) and the cooling device (3), the vulcanizing heating device (2) comprising an upper heating plate (20) movable up and down and a lower heating plate (21) fixed on the mounting base (6), and the cooling device (3) comprising a lower cooling plate (30) movable up and down and an upper cooling plate (31) fixed on the mounting base (6), characterized in that: The upper vacuum device (4) includes an upper vacuum cover (40) surrounding the upper heating plate (20) and a first drive device (41) for driving the upper vacuum cover (40) to move up and down. The first drive device (41) is a first lifting cylinder. The upper vacuum cover (40) is provided with a first through hole (42) for vacuuming. The frame (1) is provided with a second drive device (10) for driving the upper heating plate (20) to move. The second drive device (10) is a first lifting cylinder.

2. The vacuum hood mechanism of the shoe sole hydraulic press according to claim 1, characterized in that: The upper vacuum shroud (40) is provided with a first through hole (43) through which the piston rod of the first lifting cylinder passes. A linear bearing (44) is provided on the first through hole (43). After the piston rod of the first lifting cylinder passes through the linear bearing (44), it is connected to the upper heating plate (20).

3. The vacuum hood mechanism of the shoe sole hydraulic press according to claim 2, characterized in that: The piston rod end of the first lifting cylinder is provided with an upper tray (22), the upper tray (22) is provided with an upper heat insulation plate, and the upper heating plate (20) is fixed on the upper heat insulation plate (23).

4. The vacuum hood mechanism of the shoe sole hydraulic press according to claim 3, characterized in that: The upper heating plate (20) is provided with a first channel (24) that communicates with the first through hole (42). One end of the first channel penetrates the upper surface of the upper heating plate (20) so that an air outlet (25) is formed on the upper surface of the upper heating plate (20), and the other end penetrates the lower surface of the lower heating plate (21) so that an air inlet (26) is formed on the lower surface of the upper heating plate (20).

5. The vacuum hood mechanism of the shoe sole hydraulic press according to claim 4, characterized in that: The first channel (24) is connected to the first through hole (42) through the first pipe (7).

6. The vacuum hood mechanism of the shoe sole hydraulic press according to claim 1, characterized in that: The lower vacuum device (5) includes a lower vacuum cover (50) surrounding the lower cooling plate (30) and a third drive device (51) for driving the lower vacuum cover (50) to move up and down. The third drive device (51) is a second lifting cylinder.

7. The vacuum bell mechanism of a sole hydraulic press according to claim 1, wherein: The frame (1) is provided with a fourth drive device (11) for driving the lower cooling plate (30) to move up and down. The fourth drive device (11) is a second lifting cylinder.

8. The vacuum hood mechanism of the shoe sole hydraulic press according to claim 7, characterized in that: The lower cooling plate (30) and the upper cooling plate (31) are each provided with a cooling channel (300) and a water inlet (301) and a water outlet (302) that communicate with both ends of the cooling channel (300). The water inlet and water outlet of the lower cooling plate (30) are connected to a second pipe (8). The upper part of the second pipe (8) passes through the lower vacuum cover (50) and is sealed to the lower vacuum cover (50).

9. The vacuum bell mechanism of a sole hydraulic press according to claim 1, characterized in that: The upper vacuum cover (40) and the lower vacuum cover (50) are respectively provided with sealing devices (52) on the connection surfaces with the mounting base (6).

10. The vacuum hood mechanism of the shoe sole hydraulic press according to claim 9, characterized in that: The sealing device (52) is a sealing ring.

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