Vacuumizing mechanism of EVA foam forming machine

Abstract

The utility model relates to the technical field of EVA (Ethylene Vinyl Acetate) foaming forming machines, in particular to a vacuumizing mechanism of an EVA foaming forming machine, which comprises a main body, a mold connected to the bottom of the main body, a support frame arranged at the bottom of the main body, a pipeline penetrating through the top of the support frame, a group of connecting pipes inserted into the top of the pipeline, and a plurality of exhaust pipes arranged at the tops of the connecting pipes, a supporting plate is connected to the bottom of the supporting frame, a vacuum pump and an air inlet pump are placed on the top of the supporting plate, a movable frame is placed at the bottom of the connecting pipe, and electric telescopic rods are inserted into the left side and the right side of the movable frame. Due to the fact that the pressure generated by the gas can eject out the foreign matter blocked in the exhaust pipe, the foreign matter blocked in the exhaust pipe can be conveniently removed, working pressure is relieved, and production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to a vacuum pumping mechanism of an EVA foam molding machine, in particular to a vacuum pumping mechanism of an EVA foam molding machine, and belongs to the technical field of EVA foam molding machines. Background Art

[0002] First, place the EVA material in the mold and prepare the foaming agent and other necessary auxiliary materials. At the same time, check the proper functioning of the vacuum system, including the integrity and connections of components such as the vacuum pump, vacuum tube, and vacuum valve. Start the vacuum system, and the vacuum pump begins to operate, extracting the air from the mold through the vacuum tube. After reaching the desired vacuum level, the vacuum environment must be maintained for a period of time to ensure that the EVA material can fully expand during the foaming process. The length of this period depends on factors such as the properties of the EVA material, the type and amount of foaming agent, and the shape and size of the mold. After maintaining a certain vacuum environment, the foaming agent is injected into the mold, and the heating system is activated to soften the EVA material. Under the combined effects of vacuum and heat, the EVA material begins to foam and expand until it fills the mold.

[0003] The vacuum pumping mechanism of the EVA foam molding machine in the prior art manually cleans the foreign matter that blocks the exhaust pipe. However, the manual cleaning of the foreign matter inside the exhaust pipe is too slow, thereby reducing the production efficiency. Therefore, there is an urgent need to improve the vacuum pumping mechanism of the EVA foam molding machine to solve the above-mentioned problems. Utility Model Content

[0004] The purpose of the utility model is to provide a vacuum pumping mechanism for an EVA foam molding machine, in which the gas generated by an air intake pump is transported to the inside of a connecting pipe, and the gas inside the connecting pipe is transmitted to the inside of an exhaust pipe. The pressure generated by the gas can push out foreign matter blocking the inside of the exhaust pipe.

[0005] In order to achieve the above-mentioned purpose, the main technical solutions adopted by the utility model include: a vacuum extraction mechanism of an EVA foam molding machine, comprising a main body, the bottom of the main body is connected to a mold, the bottom of the main body is provided with a support frame, the top of the support frame is penetrated by a pipe, the top of the pipe is plugged with a group of connecting pipes, the top of the connecting pipe is provided with multiple exhaust pipes, the bottom of the support frame is connected to a support plate, the top of the support plate is respectively placed with a vacuum pump and an air intake pump, a movable frame is placed at the bottom of the connecting pipe, and the left and right sides of the movable frame are respectively plugged with electric telescopic rods.

[0006] Preferably, the movable rack is placed on the top of the support rack, a group of the electric telescopic rods are respectively connected to both sides of the main body, the bottom end of the pipe is connected to the air extraction hole of the vacuum pump, and the air inlet of the air intake pump is connected to the bottom of the pipe.

[0007] Preferably, a plurality of mold grooves are opened on the top of the mold, and exhaust holes are opened on the inner walls of the mold grooves. A plurality of exhaust pipes pass through the bottom of the mold, and the top of the connecting pipe contacts the inside of the exhaust hole, and a sealing ring is provided inside the exhaust hole.

[0008] Preferably, a pressing plate is placed on the top of the mold, and two connecting heads are connected to the top of the pressing plate by bolts. A cylinder is plugged into the top of the connecting head, and the body of the cylinder is covered with a fixing frame.

[0009] Preferably, both sides of the fixing frame are connected to the top of the main body through fixing plates, both sides of the pressure plate are provided with limit blocks, and the left and right inner walls of the main body are provided with limit grooves, which are connected to the outside of the limit blocks.

[0010] Preferably, the bottom of the main body is connected to the top of the support frame through connecting plate 1, the four-corner connecting plate 2 of the mold is connected to the inner side of the main body, and a plurality of sealing strips are provided at the bottom of the pressure plate, and the bottom of the sealing strip is in contact with the top of the mold groove.

[0011] Preferably, two groups of supporting legs are welded to the bottom of the support frame, and the bottom of the support frame is connected to the inner side of one group of supporting legs through a connecting plate three, and the bottom of the supporting legs is provided with a rubber anti-slip pad.

[0012] The utility model has at least the following beneficial effects: when the electric telescopic rod is started, the electric telescopic rod drives the movable frame to move downward, the connecting pipe can be detached from the inside of the exhaust hole, the bottom of the pipe is plugged into the air inlet hole of the air intake pump, and the air intake pump is started. The gas generated by the air intake pump is transported to the inside of the connecting pipe, and the gas inside the connecting pipe is transmitted to the inside of the exhaust pipe. Due to the pressure generated by the gas, foreign objects blocking the inside of the exhaust pipe will be pushed out. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0014] Figure 1 This is a schematic diagram of the overall structure of the main body of the utility model;

[0015] Figure 2 This is a schematic diagram of the rotation of the support frame of the present invention;

[0016] Figure 3 This is a schematic diagram of the structure of the mobile rack of the utility model;

[0017] Figure 4 This is a schematic diagram of the overall structure of A of the present utility model;.

[0018] In the figure, 1-main body; 2-mold; 3-support frame; 301-pipeline; 302-connecting pipe; 303-exhaust pipe; 304-support plate; 305-vacuum pump; 306-intake pump; 307-movable frame; 308-electric telescopic rod; 4-pressing plate; 5-connector; 6-cylinder; 7-fixed frame. DETAILED DESCRIPTION

[0019] The following will describe the implementation methods of the present application in detail with reference to the accompanying drawings and examples, so that the implementation process of how the present application applies technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0020] like Figures 1-4 As shown, the vacuum extraction mechanism of an EVA foam molding machine provided in this embodiment includes a main body 1, the bottom of the main body 1 is connected to a mold 2, the bottom of the main body 1 is provided with a support frame 3, the top of the support frame 3 is penetrated by a pipe 301, the top of the pipe 301 is plugged with a group of connecting pipes 302, the top of the connecting pipe 302 is provided with multiple exhaust pipes 303, the bottom of the support frame 3 is connected to a support plate 304, the top of the support plate 304 is respectively placed with a vacuum pump 305 and an air intake pump 306, a movable frame 307 is placed at the bottom of the connecting pipe 302, and the left and right sides of the movable frame 307 are respectively plugged with electric telescopic rods 308.

[0021] like Figure 2 as well as Figure 3 As shown, further, the movable frame 307 is placed on the top of the support frame 3, a group of electric telescopic rods 308 are respectively connected to both sides of the main body 1, the bottom end of the pipe 301 is connected to the exhaust hole of the vacuum pump 305, and the air inlet of the air intake pump 306 is connected to the bottom of the pipe 301. In this way, the electric telescopic rod 308 is started to drive the movable frame 307 to move downward, and the air intake pump 306 is started to ventilate the inside of the pipe 301, so that the gas can push out foreign matter blocked inside the exhaust pipe 303.

[0022] like Figure 3 as well as Figure 4 As shown, further, a plurality of mold grooves are opened on the top of the mold 2, and exhaust holes are opened on the inner walls of the mold grooves. A plurality of exhaust pipes 303 pass through the bottom of the mold 2, and the top of the connecting pipe 302 is in contact with the inside of the exhaust hole. A sealing ring is provided inside the exhaust hole. Starting the vacuum pump 305 in this way is conducive to drawing vacuum inside the mold groove, while preventing air leakage through the sealing ring.

[0023] like Figure 1As shown, further, a pressing plate 4 is placed on the top of the mold 2, and two connecting heads 5 are connected to the top of the pressing plate 4 by bolts. A cylinder 6 is inserted on the top of the connecting head 5, and a fixing frame 7 is provided on the body of the cylinder 6. This method facilitates the movement of the pressing plate 4 to the top of the mold 2. Both sides of the fixing frame 7 are connected to the top of the main body 1 through fixing plates. This method prevents the cylinder 6 from shaking and makes the cylinder 6 more stable during work. Limit blocks are provided on both sides of the pressing plate 4, and limit grooves are provided on the left and right inner walls of the main body 1. The limit grooves are connected to the outside of the limit blocks. This method increases the stability of the up and down movement of the pressing plate 4. The bottom of the main body 1 is connected to the top of the support frame 3 through a connecting plate 1, and the four corners of the mold 2 are connected to the inner side of the main body 1. The bottom of the pressing plate 4 is provided with multiple sealing strips, and the bottom of the sealing strip contacts the top of the mold groove. This method prevents the mold groove from leaking. Two groups of support legs are welded to the bottom of the support frame 3. The bottom of the support frame 3 is connected to the inner side of one group of support legs through a connecting plate 3. The bottom of the support leg is provided with a rubber anti-slip pad. This method fixes the support frame 3.

[0024] like Figure 1-Figure 2 、 Figure 3 as well as Figure 4 As shown, further, the principle of the vacuum mechanism of an EVA foam molding machine provided in this embodiment is as follows: EVA foam molding machine belongs to the prior art. The working principle of EVA foam molding is not described in detail here. First, the EVA material is placed inside the mold groove opened by the mold 2, and the cylinder 6 is started to drive the pressure plate 4 to move downward so that the bottom of the pressure plate 4 contacts the top of the mold 2. Since the inner wall of the mold groove is provided with an exhaust hole, the exhaust pipe 303 passes through the bottom of the mold 2, so that the top of the exhaust pipe 303 contacts the inside of the exhaust hole, and the vacuum pump 305 is started. Therefore, through the connection between the pipeline 301 and the connecting pipe 302, the vacuum pump 305 will exhaust Take the air inside the exhaust pipe 303. At this time, the exhaust pipe 303 will extract the air inside the mold groove, so that the EVA material inside the mold groove can fully expand during the foaming process. Start the electric telescopic rod 308, and the electric telescopic rod 308 drives the movable frame 307 to move downward. At this time, the connecting pipe 302 can be separated from the exhaust hole, and the bottom of the pipe 301 is connected to the air inlet hole of the air intake pump 306. Start the air intake pump 306, and the gas generated by the air intake pump 306 is transported to the inside of the connecting pipe 302. The gas inside the connecting pipe 302 will be transmitted to the inside of the exhaust pipe 303. Due to the pressure generated by the gas, foreign objects blocking the inside of the exhaust pipe 303 will be pushed out.

[0025] For example, certain words are used in the specification and claims to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. This specification and claims do not use differences in names as a way to distinguish components, but use differences in the functions of the components as the criteria for distinction. For example, "including" mentioned throughout the specification and claims is an open term and should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve technical problems within a certain error range and basically achieve technical effects.

[0026] It should be noted that the terms "include," "comprises," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a product or system comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such product or system. In the absence of further limitations, an element defined by the phrase "comprising a..." does not exclude the presence of other identical elements in the product or system comprising the element.

[0027] The above description shows and describes several preferred embodiments of the present invention. However, as previously mentioned, it should be understood that the present invention is not limited to the form disclosed herein and should not be construed as excluding other embodiments. Instead, the present invention can be used in various other combinations, modifications, and environments and can be modified within the scope of the present invention as taught herein or through the techniques or knowledge in the relevant field. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention are intended to be protected by the claims appended hereto.

Claims

1. A vacuum pumping mechanism for an EVA foam molding machine, comprising a main body (1), characterized in that: The bottom of the main body (1) is connected to the mold (2), the bottom of the main body (1) is provided with a support frame (3), the top of the support frame (3) is penetrated by a pipe (301), the top of the pipe (301) is plugged with a group of connecting pipes (302), the top of the connecting pipe (302) is provided with a plurality of exhaust pipes (303), the bottom of the support frame (3) is connected to a support plate (304), the top of the support plate (304) is respectively provided with a vacuum pump (305) and an air intake pump (306), the bottom of the connecting pipe (302) is provided with a movable frame (307), and the left and right sides of the movable frame (307) are respectively plugged with electric telescopic rods (308).

2. The vacuum pumping mechanism of the EVA foam molding machine according to claim 1, characterized in that: The movable frame (307) is placed on the top of the support frame (3), a group of electric telescopic rods (308) are respectively connected to both sides of the main body (1), the bottom end of the pipe (301) is connected to the air extraction hole of the vacuum pump (305), and the air inlet of the air intake pump (306) is connected to the bottom of the pipe (301).

3. The vacuum pumping mechanism of the EVA foam molding machine according to claim 1, characterized in that: The top of the mold (2) is provided with a plurality of mold grooves, the inner wall of the mold groove is provided with an exhaust hole, the plurality of exhaust pipes (303) pass through the bottom of the mold (2), the top of the connecting pipe (302) contacts the inside of the exhaust hole, and a sealing ring is provided inside the exhaust hole.

4. The vacuum pumping mechanism of the EVA foam molding machine according to claim 1, characterized in that: A pressing plate (4) is placed on the top of the mold (2), and two connecting heads (5) are connected to the top of the pressing plate (4) by bolts. A cylinder (6) is plugged into the top of the connecting head (5), and the body of the cylinder (6) is covered with a fixing frame (7).

5. The vacuum pumping mechanism of the EVA foam molding machine according to claim 4, characterized in that: Both sides of the fixing frame (7) are connected to the top of the main body (1) through fixing plates, both sides of the pressing plate (4) are provided with limit blocks, and the left and right inner walls of the main body (1) are provided with limit slots, which are connected to the outside of the limit blocks.

6. The vacuum pumping mechanism of the EVA foam molding machine according to claim 3, characterized in that: The bottom of the main body (1) is connected to the top of the support frame (3) through a connecting plate 1, and the four-corner connecting plate 2 of the mold (2) is connected to the inner side of the main body (1). The bottom of the pressing plate (4) is provided with a plurality of sealing strips, and the bottom of the sealing strips contacts the top of the mold groove.

7. The vacuum pumping mechanism of the EVA foam molding machine according to claim 1, characterized in that: Two groups of support legs are welded to the bottom of the support frame (3), and the bottom of the support frame (3) is connected to the inner side of one group of support legs via a connecting plate 3, and the bottom of the support legs is provided with a rubber anti-slip pad.

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