Self-opening multi-cylinder EVA foaming machine

Abstract

The application discloses a self-opening-mold multi-cylinder EVA foaming machine and belongs to the technical field of foaming machines. The foaming machine comprises a base, a lower support fixedly installed on the upper surface of the base, an upper support connected with the lower support through a supporting column, and a frame of the foaming machine formed by the lower support, the supporting column and the upper support. Four limiting plates are installed between the upper support and the lower support, and a mold plate is arranged in the space between the upper support and the lower support. The mold plate is provided with a bayonet at each corner and is slidably connected with the four limiting plates. The auxiliary mold opening mechanism can prevent the mold plate from being adhered to the material, helps to realize the self-opening-mold purpose, ensures smooth mold opening, and additionally, the cooling mechanism can cool the mold plate once during the mold opening process, which helps to solidify the material, is favorable for demolding, avoids excessive temperature drop to increase subsequent energy consumption, and enables the mold plates to be mutually adsorbed, thereby helping to reduce the energy consumption of the multi-cylinder mold assembly.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of EVA foaming machines, in particular to a multi-cylinder EVA foaming machine capable of automatically opening mold. BACKGROUND

[0002] Traditional large EVA foaming machines mostly adopt single-cylinder structure, and the main oil cylinder is located in the middle of the frame. When the oil cylinder presses the movable beam, there is a difference in mold clamping force between the center and the periphery of the frame, which leads to uneven deformation of the frame and shortens the fatigue life.

[0003] By adding multiple auxiliary mold clamping cylinders, the stress on the frame during pressing can be more uniform, thereby reducing deformation and prolonging the service life of the equipment.

[0004] The existing multi-cylinder EVA foaming machine still has the following technical problems when in use, such as:

[0005] The existing multi-cylinder EVA foaming machine is prone to material and mold adhesion during mold opening, which makes it difficult for multiple adjacent molds to move away, which is not conducive to mold opening. For example, the multi-cylinder EVA foaming machine disclosed in CN105643860B mainly relies on the weight of the heating plate above to make adjacent molds move away and open the mold. However, if the material and mold are adhered, the material between the adjacent molds will hinder the separation of the adjacent molds.

[0006] In addition, the existing multi-cylinder EVA foaming machine has a high temperature during mold opening, which is not conducive to material solidification and demolding. However, if an external cooling device is used, the temperature will drop too much, which will require re-heating when using the foaming machine later, resulting in increased energy consumption.

[0007] Furthermore, in the existing multi-cylinder EVA foaming machine, the extrusion force between the molds is completely dependent on the main oil cylinder and the mold clamping cylinder, which results in high energy consumption of the main oil cylinder and the mold clamping cylinder during use, which is not conducive to reducing the energy consumption of the EVA foaming machine during use.

[0008] Therefore, a multi-cylinder EVA foaming machine capable of automatically opening mold is needed to solve the above problems. SUMMARY

[0009] The present application aims to provide a multi-cylinder EVA foaming machine capable of automatically opening mold to solve the problems of insufficient smoothness during mold opening, difficulty in demolding, and high energy consumption of the existing multi-cylinder EVA foaming machine.

[0010] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0011] The utility model provides a kind of self-opening mould multi-cylinder EVA foaming machine, including base and fixedly installed lower support on its upper surface, the lower support is connected with upper support by support column, and lower support, support column and upper support constitute the frame of foaming machine, four limit plates are installed between upper support and lower support, and space between upper support and lower support is provided with mould plate, the four corners of the mould plate are provided with bayonet and four limit plates sliding connection, auxiliary mould opening mechanism is installed on the mould plate, and cooling mechanism connected with auxiliary mould opening mechanism is also provided on the mould plate, the lower surface of the upper support is provided with the part of auxiliary extrusion adsorption mechanism, and another part of auxiliary extrusion adsorption mechanism is arranged on the mould plate, and multi-cylinder mould assembly is arranged below the lowermost mould plate.

[0012] Preferably, the auxiliary mould opening mechanism includes a square cavity arranged in the short side of the mould plate, and a groove two is arranged on both sides of the mould plate, a piston two is movably penetrated between the groove two and the square cavity, the inner end of the piston two is arranged inside the corresponding square cavity, and a spring two is arranged between the outer end of the piston two and the corresponding groove two.

[0013] Preferably, the piston two is composed of an outer plate, an inner plate and a center rod, the center rod is uniformly distributed between the outer plate and the inner plate, and the piston two penetrates the groove two and the square cavity through the center rod, the outer plate of the piston two is consistent with the corresponding groove two, and the inner plate of the piston two is seamlessly and slidingly connected with the corresponding square cavity.

[0014] Preferably, the cooling mechanism includes a cooling channel arranged inside the mould plate, one end of the cooling channel penetrates into the corresponding square cavity, the other end of the cooling channel penetrates to the back side of the mould plate, and a channel connector is arranged on the other end of the cooling channel.

[0015] Preferably, two cooling channels are arranged in each mould plate, and the cooling channels are S-shaped.

[0016] Preferably, the auxiliary extrusion adsorption mechanism includes a docking cavity one and a docking cavity two, the docking cavity two is arranged on the lower surface of the uppermost mould plate and the upper surface of the lowermost mould plate, and the docking cavity one is arranged on the mould plate at the middle position, the docking cavity one penetrates the upper and lower sides of the corresponding mould plate, and the docking cavity two is a recessed structure with only one opening.

[0017] Preferably, the auxiliary extrusion adsorption mechanism further includes a coarse circular cavity and a fine circular cavity arranged in the upper support, the corresponding coarse circular cavity and fine circular cavity are connected through a communication hole, and the coarse circular cavity and the fine circular cavity are arranged as four, respectively corresponding to the positions of the four docking cavities two on the uppermost mould plate, the upper end of a gas guide pipe is movably inserted into the fine circular cavity, and the lower end of the gas guide pipe is fixedly connected to the upper surface of the mould plate, wherein the gas guide pipe penetrates the fine circular cavity and the corresponding docking cavity two.

[0018] Preferably, the end of the air guide pipe extending into the fine circular cavity is provided with a limiting disc in seamless sliding connection with the fine circular cavity, and the limiting disc is provided with a through hole penetrating through the inner and outer sides thereof, and the opening ends of the butt joint cavities I and II are provided with rubber rings, so that after all the butt joint cavities I and II are connected, a sealed space is formed.

[0019] Preferably, the auxiliary extrusion and adsorption mechanism further comprises a groove I arranged on the lower surface of the upper support, wherein the groove I corresponds to the position of the coarse circular cavity, a piston I penetrates between the coarse circular cavity and the groove I, and the upper end of the piston I is in seamless sliding connection with the inner side of the coarse circular cavity, and a spring I is arranged between the lower end of the coarse circular cavity and the groove I.

[0020] Preferably, the piston I is in the shape of an I-beam, and the lower end thereof is consistent with the corresponding groove I, and the middle part of the piston I is sealingly and movably penetrated between the coarse circular cavity and the groove I.

[0021] Compared with the prior art, the self-opening mold multi-cylinder EVA foaming machine has the beneficial effects that: the auxiliary mold opening mechanism can prevent the mold plate from being bonded with the material, helps to achieve the purpose of self-opening mold, ensures smooth mold opening, and additionally, the cooling mechanism is arranged, which can cool the mold plate once during the mold opening process, not only helps to solidify the material, thereby facilitating demolding, but also avoids excessive temperature drop to increase subsequent energy consumption, and the mold plates can be adsorbed to each other, thereby helping to reduce the energy consumption of the multi-cylinder mold pressing assembly.

[0022] 1. Through the operation of the multi-cylinder mold pressing assembly, the piston II will gradually move into the corresponding square cavity during the process of contacting all the mold plates, thereby extruding the gas in the square cavity and compressing the spring II, and when the multi-cylinder mold pressing assembly no longer extrudes the mold plate, the spring II resets, which causes the adjacent mold plates to have kinetic energy of moving away from each other, thereby preventing the problem of unsmooth mold opening caused by the bonding of the material and the mold plate;

[0023] 2. During the process that the piston II gradually moves into the corresponding square cavity, the cooling liquid in the cooling channel will be discharged from the foaming machine, and when the spring II resets, the cooling liquid will instantaneously enter the cooling channel, thereby performing one-time cooling. Such cooling will not cause the temperature of the mold plate to instantaneously drop too much, thereby helping to solidify the material and facilitating demolding.

[0024] 3、In all templates contact each other, docking cavity one and docking cavity two will constitute a closed space, then when the uppermost template gradually close to the upper support, will lead to the piston piece one extrusion, and then make the rough round cavity absorption fine round cavity gas, so that docking cavity one and docking cavity two will constitute a closed space formed in the negative pressure, help all templates between each other adsorption extrusion, and then can reduce the energy consumption of the multi-cylinder compression mold assembly in use. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is the main view structure schematic diagram of the present application;

[0026] Figure 2 It is the rear view structure schematic diagram of the present application;

[0027] Figure 3 It is the local sectional view structure schematic diagram of the present application;

[0028] Figure 4 It is the A point amplification structure schematic diagram of the present application; Figure 3

[0029] Figure 5 It is the template longitudinal sectional view structure schematic diagram of the present application;

[0030] Figure 6 It is the B point amplification structure schematic diagram of the present application; Figure 5

[0031] Figure 7 It is the template transverse sectional view structure schematic diagram of the present application;

[0032] Figure 8 It is the C point amplification structure schematic diagram of the present application; Figure 7

[0033] Figure 9 It is the upper support local sectional view structure schematic diagram of the present application;

[0034] Figure 10 It is the D point amplification structure schematic diagram of the present application. Figure 9

[0035] In the figure: 1, base; 2, lower support; 3, support column; 4, upper support; 5, limit plate; 6, template; 7, multi-cylinder compression mold assembly; 8, rough round cavity; 9, fine round cavity; 10, communication hole; 11, piston piece one; 12, gas guide pipe; 13, groove one; 14, spring one; 15, square cavity; 16, groove two; 17, piston piece two; 18, spring two; 19, cooling channel; 20, docking cavity one; 21, channel joint; 22, docking cavity two. DETAILED DESCRIPTION

[0036] ​​​​With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application.

[0037] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application. Figures 1-10 The present application provides the following technical solutions:

[0038] Embodiment one: In order to solve the problem that the previous multi-cylinder EVA foaming machine is easy to cause material and mold adhesion during mold opening, resulting in the self-opening function of the mold itself cannot be realized smoothly, the present application provides the following technical solutions, specifically, a self-opening multi-cylinder EVA foaming machine, comprising a base 1 and a lower support 2 fixedly installed on the upper surface thereof, the lower support 2 is connected with an upper support 4 through a support column 3, the lower support 2, the support column 3 and the upper support 4 constitute the frame of the foaming machine, four limiting plates 5 are installed between the upper support 4 and the lower support 2, and the space between the upper support 4 and the lower support 2 is provided with a mold plate 6, the four corners of the mold plate 6 are provided with a bayonet and are slidably connected with the four limiting plates 5, and an auxiliary mold opening mechanism is installed on the mold plate 6.

[0039] The auxiliary mold opening mechanism comprises a square cavity 15 arranged in the short side of the mold plate 6, and recesses 16 are arranged on both sides of the mold plate 6, a piston member 17 is movably penetrated between the square cavity 15 and the recess 16, the inner end of the piston member 17 is arranged in the corresponding square cavity 15, and a spring 18 is arranged between the outer end of the piston member 17 and the corresponding recess 16, in use, the multi-cylinder mold assembly 7 makes the multi-layer mold plate 6 close to each other, in this process, the corresponding piston members 17 are extruded, and then the piston members 17 gradually move into the corresponding square cavities 15, at this time, the spring 18 between the piston member 17 and the corresponding recess 16 is compressed, and in the subsequent demolding process, the spring 18 is instantaneously reset, thereby generating a mutual pushing force between the adjacent two mold plates 6, avoiding the problem that the mold plate 6 and the material are adhered, and the self-opening function cannot be realized smoothly, the piston member 17 is composed of an outer plate, an inner plate and a center rod, the center rod is uniformly distributed between the outer plate and the inner plate, and the piston member 17 penetrates the recess 16 and the square cavity 15 through the center rod, the outer plate of the piston member 17 is consistent with the corresponding recess 16, and the inner plate of the piston member 17 is seamlessly and slidably connected with the corresponding square cavity 15.

[0040] Embodiment two: In order to solve the problem that the previous multi-cylinder EVA foaming machine is not conducive to cooling the mold during mold opening, thereby causing the material to be unable to be quickly solidified and being not conducive to demolding, the present application provides the following technical solutions, specifically, the mold plate 6 is further provided with a cooling mechanism connected with the auxiliary mold opening mechanism.

[0041] The cooling mechanism includes a cooling channel 19 arranged inside the mold plate 6, one end of the cooling channel 19 penetrates into the corresponding square cavity 15, the other end of the cooling channel 19 penetrates to the back side of the mold plate 6, and a channel connector 21 is installed on the other end of the cooling channel 19, two cooling channels 19 are arranged in each mold plate 6, and the cooling channel 19 is S-shaped, in use, the channel connector 21 needs to be connected to a container containing cooling oil through a hose (such as an EPDM hose), during the process of moving the piston piece two 17 into the corresponding square cavity 15 by approaching the multi-layer mold plate 6, the gas in the square cavity 15 enters the cooling channel 19, and then the cooling oil in the cooling channel 19 is squeezed back into the container containing cooling oil, during the process of opening the mold, the spring two 18 is reset, the gas pressure in the square cavity 15 is reduced, so that the hose transports the cooling oil in the container into the cooling channel 19, thereby realizing one-time cooling of the mold plate 6, which helps to accelerate material solidification, facilitates subsequent demolding, and does not cause the mold plate 6 to drop too much in temperature, thereby causing the problem of requiring more energy consumption during subsequent use.

[0042] Embodiment three: in order to solve the problem that the previous multi-cylinder EVA foaming machine cannot make the molds mutually adsorbed, thereby being not conducive to reducing the energy consumption of the main oil cylinder and the auxiliary mold closing cylinder, the following technical scheme is provided, specifically, part of the auxiliary extrusion adsorption mechanism is arranged on the lower surface of the upper support 4, and the other part of the auxiliary extrusion adsorption mechanism is arranged on the mold plate 6, the multi-cylinder mold closing assembly 7 is arranged on the lower support 2, and the multi-cylinder mold closing assembly 7 is arranged below the lowermost mold plate 6.

[0043] The auxiliary extrusion and adsorption mechanism comprises a docking cavity I 20 and a docking cavity II 22, wherein the docking cavity II 22 is arranged on the lower surface of the uppermost die plate 6 and the upper surface of the lowermost die plate 6, and the docking cavity I 20 is arranged on the die plate 6 in the middle position, the docking cavity I 20 penetrates through the upper and lower sides of the corresponding die plate 6, the docking cavity II 22 is a recess structure with only one opening, the auxiliary extrusion and adsorption mechanism further comprises a groove I 13 arranged on the lower surface of the upper support 4, wherein the groove I 13 corresponds to the position of the rough circular cavity 8, the rough circular cavity 8 and the groove I 13 are penetrated by a piston I 11, and the upper end of the piston I 11 is seamlessly and slidably connected to the inner side of the rough circular cavity 8, a spring I 14 is arranged between the lower end of the rough circular cavity 8 and the groove I 13, the auxiliary extrusion and adsorption mechanism further comprises a rough circular cavity 8 and a fine circular cavity 9 arranged in the upper support 4, and the corresponding rough circular cavity 8 and fine circular cavity 9 are connected through a communication hole 10, the rough circular cavity 8 and the fine circular cavity 9 are both arranged as four, corresponding to the positions of the four docking cavity II 22 on the uppermost die plate 6, the upper end of the air guide pipe 12 is sealingly and movably inserted into the fine circular cavity 9, and the lower end of the air guide pipe 12 is fixedly connected to the upper surface of the die plate 6, wherein the air guide pipe 12 penetrates through the fine circular cavity 9 and the corresponding docking cavity II 22, in use, the multiple die plates 6 are close to each other, so that the corresponding rubber rings are contacted, so that the docking cavity II 22 in the upper and lower positions and the docking cavity I 20 in the middle position form a sealed space, then after all the die plates 6 are contacted, continue to move upwards, so that the uppermost die plate 6 extrudes the piston I 11 and moves it upwards, in the process of moving the piston I 11 upwards, the gas in the fine circular cavity 9 is absorbed through the communication hole 10, so that the air guide pipe 12 absorbs the gas in the sealed space formed by the docking cavity II 22 and the docking cavity I 20, causing the air pressure in the sealed space to decrease, so that the multiple die plates 6 can be adsorbed and extruded, thereby the energy consumption of the main oil cylinder and the auxiliary clamping cylinder can be relatively reduced.

[0044] The end of the air guide pipe 12 inserted into the fine circular cavity 9 is provided with a limiting disc which is seamlessly and slidably connected to the fine circular cavity 9, and the limiting disc is provided with a through hole penetrating through the inner and outer sides thereof, the opening ends of the docking cavity I 20 and the docking cavity II 22 are both provided with rubber rings, for forming a sealed space after all the docking cavity I 20 and all the docking cavity II 22 are connected, the piston I 11 is in the shape of an I-beam, and the lower end thereof is matched with the corresponding groove I 13, and the middle part of the piston I 11 sealingly and movably penetrates between the rough circular cavity 8 and the groove I 13.

[0045] The contents not described in detail in the specification belong to the prior art known to those skilled in the art.

[0046] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely exemplary of the principles and application of the present application. Numerous modifications and adaptions can be effected without departing from the spirit and scope of the present application, which is not limited to the exact construction and arrangement described. It is intended, therefore, to cover all modifications and adaptions that fall within the scope of the claims and their equivalents.

Claims

1. A self-opening multi-cylinder EVA foaming machine, comprising a base (1) and a lower support (2) fixedly installed on its upper surface, characterized in that: The lower support (2) is connected to the upper support (4) via the support column (3). The lower support (2), support column (3), and upper support (4) constitute the frame of the foaming machine. Four limiting plates (5) are installed between the upper support (4) and the lower support (2). A template (6) is provided in the space between the upper support (4) and the lower support (2). The four corners of the template (6) are provided with bayonets that are slidably connected to the four limiting plates (5). An auxiliary mold opening mechanism is installed on the template (6). A cooling mechanism connected to the auxiliary mold opening mechanism is also provided on the template (6). The lower surface of the upper support (4) is provided with a part of the auxiliary extrusion and adsorption mechanism. The other part of the auxiliary extrusion and adsorption mechanism is provided. The lower support (2) is provided with a multi-cylinder molding assembly (7) and is located below the bottommost template (6). The auxiliary extrusion and adsorption mechanism includes a first docking cavity (20) and a second docking cavity (22). The second docking cavity (22) is provided on both the lower surface of the topmost template (6) and the upper surface of the bottommost template (6). The first docking cavity (20) is located in the middle of the template (6). The first docking cavity (20) penetrates the upper and lower sides of the corresponding template (6). The second docking cavity (22) is a recessed structure with only one opening. The auxiliary extrusion and adsorption mechanism also includes a coarse circular cavity ( ) provided in the upper support (4). 8) and the fine circular cavity (9), and the corresponding coarse circular cavity (8) and the fine circular cavity (9) are connected through the connecting hole (10). There are four coarse circular cavities (8) and four fine circular cavities (9), which correspond to the positions of the four docking cavities (22) on the uppermost template (6). The upper end of the air guide tube (12) is sealed and movable inside the fine circular cavity (9), and the lower end of the air guide tube (12) is fixedly connected to the upper surface of the template (6). The air guide tube (12) passes through the fine circular cavity (9) and the corresponding docking cavity (22). The end of the air guide tube (12) that extends into the fine circular cavity (9) is provided with a limiting disc that is seamlessly slidably connected to the fine circular cavity (9), and the limiting disc is provided with a through hole. Through the through holes on both the inner and outer sides, the opening ends of the first docking cavity (20) and the second docking cavity (22) are provided with rubber rings, so that after all the first docking cavities (20) and all the second docking cavities (22) are connected, they form a sealed space. The auxiliary extrusion adsorption mechanism also includes a groove (13) provided on the lower surface of the upper support (4), wherein the groove (13) corresponds to the position of the coarse circular cavity (8), and a piston (11) passes through between the coarse circular cavity (8) and the groove (13), and the upper end of the piston (11) is seamlessly slidably connected to the inner side of the coarse circular cavity (8). A spring (14) is provided between the lower end of the coarse circular cavity (8) and the groove (13).

2. The self-opening multi-cylinder EVA foaming machine according to claim 1, characterized in that: The auxiliary mold opening mechanism includes a square cavity (15) set in the short side of the template (6), and grooves (16) are provided on both sides of the template (6). A piston (17) is movably passed between the groove (16) and the square cavity (15). The inner end of the piston (17) is set inside the corresponding square cavity (15), and a spring (18) is provided between the outer end of the piston (17) and the corresponding groove (16).

3. The self-opening multi-cylinder EVA foaming machine according to claim 2, characterized in that: The piston component 2 (17) is composed of an outer plate, an inner plate and a central rod, wherein the central rod is evenly distributed between the outer plate and the inner plate, and the piston component 2 (17) passes through the groove 2 (16) and the square cavity (15) through the central rod. The outer plate of the piston component 2 (17) matches the corresponding groove 2 (16), and the inner plate of the piston component 2 (17) is seamlessly and slidably connected to the corresponding square cavity (15).

4. The self-opening multi-cylinder EVA foaming machine according to claim 3, characterized in that: The cooling mechanism includes a cooling channel (19) disposed inside the template (6), and one end of the cooling channel (19) is connected to the corresponding square cavity (15), the other end of the cooling channel (19) extends to the rear side of the template (6), and a channel connector (21) is installed on the other end of the cooling channel (19).

5. A self-opening multi-cylinder EVA foaming machine according to claim 4, characterized in that: Each of the templates (6) has two cooling channels (19), and the cooling channels (19) are S-shaped.

6. The self-opening multi-cylinder EVA foaming machine according to claim 5, characterized in that: The piston component (11) has an I-shaped structure, and its lower end matches the corresponding groove (13). The coarse circular cavity (8) and the groove (13) are sealed and connected by the middle part of the piston component (11).

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