EVA foaming forming device integrated with waste gas recovery

Abstract

The utility model discloses an EVA foaming forming device of integrated waste gas recovery, including base, the base top is provided with the chute, the chute is slidably connected with the sliding seat, the sliding seat top is fixedly connected with the moving plate, the moving plate top is fixedly connected with two mould seats, the base outside is fixedly connected with the seal cover, the seal cover top is fixedly connected with the hydraulic cylinder, the hydraulic cylinder output end is fixedly connected with the lifting seat through the seal cover, the lifting seat bottom is fixedly connected with the upper die holder, the upper die holder is fixedly connected with the electric heating plate in, the seal cover inner wall top is fixedly connected with the air extraction cover, the seal cover top right side is fixedly connected with the recovery processing box. In the utility model, the air extraction cover of seal cover inner wall top produces the negative pressure, and the volatile organic compound and the dust such as waste gas produced in the cover during the forming process are inhaled into the recovery processing box through the left side suction pipe and are purified.

Description

Technical Field

[0001] This utility model relates to the field of foaming molding equipment technology, and in particular to an EVA foaming molding equipment with integrated waste gas recovery. Background Technology

[0002] EVA foam molding machines have excellent energy-saving characteristics. They mainly adopt steam proportional pressure reducing valve technology, which can accurately control the steam pressure in the main pipeline and make it more stable. Compared with similar equipment, the heating time can be reduced and energy consumption can be lowered, so they are very popular with consumers.

[0003] The existing foam molding machine's processing can be summarized as a series of actions including filling, mold closing, material return, mold preheating, heating, precooling, cooling, mold opening, and product ejection. Among these, mold closing and mold opening are determined by limit switches to determine whether the actions are completed.

[0004] During the EVA foaming process, volatile organic compounds and dust are generated due to the heating and decomposition of raw materials and cross-linking reactions. Direct emission of these gases not only pollutes the environment but may also pose safety hazards. Most existing foaming equipment lacks recycling and treatment facilities, resulting in the direct release of these gases into the air. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing an integrated waste gas recovery EVA foaming molding device.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: an EVA foaming molding device integrating waste gas recovery, comprising a base, a groove on the top of the base, a sliding seat slidably connected in the groove, a movable plate fixedly connected to the top of the sliding seat, two mold seats fixedly connected to the top of the movable plate, a sealing cover fixedly connected to the outside of the base, a hydraulic cylinder fixedly connected to the top of the sealing cover, a lifting seat fixedly connected to the output end of the hydraulic cylinder through the sealing cover, an upper mold seat fixedly connected to the bottom of the lifting seat, an electric heating plate fixedly connected inside the upper mold seat, an exhaust hood fixedly connected to the upper inner wall of the sealing cover, a recycling and processing box fixedly connected to the top right side of the sealing cover, an exhaust fan provided on the right side of the recycling and processing box, exhaust pipes through and fixedly connected to both sides of the recycling and processing box, a box door rotatably connected to the front end of the recycling and processing box, a groove column fixedly connected to the left side of the box door, a groove seat fixedly connected to the front left side of the recycling and processing box, a bidirectional threaded rod through and rotatably connected to the groove seat, and clamping arms threadedly connected to both sides of the outer ring of the bidirectional threaded rod.

[0007] As a further description of the above technical solution:

[0008] A cylinder is fixedly connected to the right side of the slide groove, and the output end of the cylinder is fixedly connected to the slide block.

[0009] As a further description of the above technical solution:

[0010] The upper mold base corresponds to the mold base.

[0011] As a further description of the above technical solution:

[0012] The end of the extraction pipe on the left is fixedly connected to the extraction hood through the sealing cover, and the end of the extraction pipe on the right is fixedly connected to the output end of the exhaust fan.

[0013] As a further description of the above technical solution:

[0014] The clamping arms are located on both sides of the groove column.

[0015] As a further description of the above technical solution:

[0016] A knob is fixedly connected to the bottom of the bidirectional threaded rod, and the knob is located on the outside of the groove seat.

[0017] As a further description of the above technical solution:

[0018] A filter plate is installed on the left side of the recycling and processing box, and an activated carbon filter plate is installed on the right side of the recycling and processing box.

[0019] As a further description of the above technical solution:

[0020] The front end of the sealing cover is rotatably connected to a sealing door.

[0021] This utility model has the following beneficial effects:

[0022] In this invention, the exhaust fan is activated, and a negative pressure is generated by the exhaust hood above the inner wall of the sealed cover. The volatile organic compounds and dust generated during the forming process inside the cover are drawn into the recovery and treatment box through the left exhaust pipe for purification. At the same time, when the filter plate or activated carbon filter plate is saturated, the knob at the bottom of the bidirectional threaded rod is turned to pull the clamping arms on both sides out of the grooves at both ends of the groove column, so that the box door can be opened to replace the filter element, making it more practical. Attached Figure Description

[0023] Figure 1 This is a perspective view of an EVA foaming molding device with integrated waste gas recovery proposed in this utility model;

[0024] Figure 2 This is a schematic diagram of the internal structure of the sealing cover of an EVA foaming molding device for integrated waste gas recovery proposed in this utility model.

[0025] Figure 3This is a schematic diagram of the groove seat structure of an EVA foaming molding device for integrated waste gas recovery proposed in this utility model.

[0026] Legend:

[0027] 1. Base; 2. Slide groove; 3. Cylinder; 4. Slide seat; 5. Moving plate; 6. Mold seat; 7. Sealing cover; 8. Hydraulic cylinder; 9. Lifting seat; 10. Upper mold seat; 11. Electric heating plate; 12. Exhaust hood; 13. Recycling and processing box; 14. Exhaust fan; 15. Exhaust pipe; 16. Box door; 17. Groove column; 18. Groove seat; 19. Bidirectional threaded rod; 20. Clamping arm; 21. Knob; 22. Filter plate; 23. Activated carbon filter plate; 24. Sealing door. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "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; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0030] Reference Figure 1-3This utility model provides an embodiment of an EVA foaming molding device integrating waste gas recovery, comprising a base 1, which serves as a fixed support. A groove 2 is formed at the top of the base 1, and a slide block 4 is slidably connected within the groove 2. A movable plate 5 is fixedly connected to the top of the slide block 4, allowing the movable plate 5 to move along the groove 2 via the slide block 4. Two mold seats 6 are fixedly connected to the top of the movable plate 5 for easy placement of foaming raw materials. A sealing cover 7 is fixedly connected to the outside of the base 1 to prevent waste gas from escaping. A hydraulic cylinder 8 is fixedly connected to the top of the sealing cover 7, and a lifting seat 9 is fixedly connected to the output end of the hydraulic cylinder 8 through the sealing cover 7, allowing the lifting seat 9 to be raised and lowered via the hydraulic cylinder 8. An upper mold seat 10 is fixedly connected to the bottom of the lifting seat 9, and an electric heating plate 11 is fixedly connected inside the upper mold seat 10 for convenient heating of the foaming raw materials via the electric heating plate 11. An exhaust hood 12 is fixedly connected to the upper part of the inner wall of the sealing cover 7. A recycling and processing box 13 is fixedly connected to the top right side of the sealing cover 7. An exhaust fan 14 is installed on the right side of the recycling and processing box 13 to facilitate the extraction of waste gas from the sealing cover 7. Exhaust pipes 15 are fixedly connected through both sides of the recycling and processing box 13. A box door 16 is rotatably connected to the front end of the recycling and processing box 13, which is opened for easy maintenance of the inside of the recycling and processing box 13. A groove column 17 is fixedly connected to the left side of the box door 16, and grooves are provided at both ends of the groove column 17. A recessed seat 18 is fixedly connected to the front left side of the recycling and processing box 13, and a groove is opened on the outer side of the recessed seat 18. A bidirectional threaded rod 19 is rotatably connected through the recessed seat 18. Clamping arms 20 are threadedly connected to both sides of the outer ring of the bidirectional threaded rod 19. The clamping arms 20 are L-shaped and can be easily inserted into the grooves at both ends of the groove column 17.

[0031] A cylinder 3 is fixedly connected to the right side of the slide 2, and the output end of the cylinder 3 is fixedly connected to the slide 4. The cylinder 3 can drive the slide 4 to move. The upper mold base 10 corresponds to the mold base 6. The end of the left exhaust pipe 15 passes through the sealing cover 7 and is fixedly connected to the exhaust cover 12. The end of the right exhaust pipe 15 is fixedly connected to the output end of the exhaust fan 14. The exhaust pipe 15 is used to transport exhaust gas. The clamping arms 20 are set on both sides of the groove column 17. The bottom of the bidirectional threaded rod 19 is fixedly connected to the knob 21, and the knob 21 is set on the outside of the groove seat 18. The knob 21 can drive the bidirectional threaded rod 19 to rotate. A filter plate 22 is set on the left side of the recycling and treatment box 13, which can filter dust. An activated carbon filter plate 23 is set on the right side of the recycling and treatment box 13. The activated carbon filter plate 23 can adsorb and purify harmful components in the exhaust gas. The sealing cover 7 is rotatably connected to a sealing door 24, and a door lock is provided between the sealing door 24 and the sealing cover 7 to facilitate opening and closing of the sealing door 24. Both the sealing door 24 and the inner side of the box door 16 are provided with sealing rings (not shown in the figure) to ensure the sealing effect.

[0032] Working principle: During operation, the sealing door 24 of the sealing cover 7 is opened, and the EVA raw material (containing resin, foaming agent, crosslinking agent, etc.) is placed into the lower mold of the two mold seats 6. The mold seats 6 are fixed on the moving plate 5, which is slidably connected to the sliding groove 2 of the base 1 through the bottom slide 4. The position of the slide 4 can be adjusted by the cylinder 3. The cylinder 3 pushes the slide 4, so that one of the mold seats 6 moves directly below the upper mold seat 10, realizing the alignment of the upper and lower molds. The production efficiency can be improved by alternating molding with the two mold seats 6. After the sealing door 24 is closed, the hydraulic cylinder 8 drives the lifting seat 9 to descend, causing the upper mold seat 10 to close with the lower mold. The electric heating plate 11 in the upper mold seat 10 is activated, raising the mold temperature to 150-200℃, causing the EVA raw material to melt and plasticize, and at the same time triggering the decomposition of the foaming agent and the crosslinking reaction. The raw material expands and fills the mold cavity to form a foamed product. During the foaming process of EVA material, waste gas containing harmful substances will be generated. At this time, the exhaust fan 14 starts, and under its action, the exhaust gas in the sealed cover 7 is drawn in through the exhaust hood 12 above the inner wall and enters the recovery and treatment box 13 through the left exhaust pipe 15. The exhaust gas first passes through the filter plate 22 on the left side of the recovery and treatment box 13, where larger particles of impurities are filtered out; then, it passes through the activated carbon filter plate 23 on the right side, where the harmful gas components in the exhaust gas are removed through the adsorption of activated carbon, thus achieving the purification treatment of the exhaust gas. The purified gas is discharged by the exhaust fan 14 through the right exhaust pipe 15, meeting the requirements of environmental protection emissions. After the foaming molding is completed, the hydraulic cylinder 8 drives the upper mold base 10 to rise and reset, the cylinder 3 starts, and its output end pushes the slide 4 to slide in the slide groove 2, driving the moving plate 5 and the mold base 6 to move, so that another mold base 6 containing raw materials moves to below the upper mold base 10, repeating the foaming process to achieve continuous production. When it is necessary to replace or maintain the filter plate 22 and activated carbon filter plate 23 inside the recycling and processing box 13, the knob 21 can be turned to drive the bidirectional threaded rod 19 to rotate within the groove seat 18, causing the clamping arms 20 on both sides to move outward and be pulled out from the grooves at both ends of the groove column 17, thus releasing the clamping fixation on the groove column 17. Subsequently, the box door 16 can be turned to open the recycling and processing box 13 for replacement or maintenance of internal components. After maintenance is completed, the operation can be reversed to re-fix the box door 16, ensuring the normal operation of the recycling and processing box 13.

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An EVA foaming molding device integrating waste gas recovery, comprising a base (1), characterized in that: The base (1) has a groove (2) on its top. A slide seat (4) is slidably connected in the groove (2). A movable plate (5) is fixedly connected to the top of the slide seat (4). Two mold seats (6) are fixedly connected to the top of the movable plate (5). A sealing cover (7) is fixedly connected to the outside of the base (1). A hydraulic cylinder (8) is fixedly connected to the top of the sealing cover (7). A lifting seat (9) is fixedly connected to the output end of the hydraulic cylinder (8) through the sealing cover (7). An upper mold seat (10) is fixedly connected to the bottom of the lifting seat (9). An electric heating plate (11) is fixedly connected inside the upper mold seat (10). An electric heating plate (11) is fixedly connected to the upper wall of the sealing cover (7). The exhaust hood (12) has a recycling and processing box (13) fixedly connected to the top right side of the sealing cover (7). An exhaust fan (14) is provided on the right side of the recycling and processing box (13). An exhaust pipe (15) is fixedly connected through both sides of the recycling and processing box (13). A box door (16) is rotatably connected to the front end of the recycling and processing box (13). A groove column (17) is fixedly connected to the left side of the box door (16). A groove seat (18) is fixedly connected to the front left side of the recycling and processing box (13). A bidirectional threaded rod (19) is rotatably connected through the groove seat (18). Clamping arms (20) are threadedly connected to both sides of the outer ring of the bidirectional threaded rod (19).

2. The EVA foaming molding device with integrated waste gas recovery according to claim 1, characterized in that: A cylinder (3) is fixedly connected to the right side of the slide groove (2), and the output end of the cylinder (3) is fixedly connected to the slide block (4).

3. The EVA foaming molding device with integrated waste gas recovery according to claim 1, characterized in that: The upper mold base (10) corresponds to the mold base (6).

4. The EVA foaming molding device with integrated waste gas recovery according to claim 1, characterized in that: The end of the suction pipe (15) on the left passes through the sealing cover (7) and is fixedly connected to the suction cover (12), and the end of the suction pipe (15) on the right is fixedly connected to the output end of the exhaust fan (14).

5. The EVA foaming molding device with integrated waste gas recovery according to claim 1, characterized in that: The clamping arms (20) are arranged on both sides of the groove column (17).

6. The EVA foaming molding device with integrated waste gas recovery according to claim 1, characterized in that: The bottom of the bidirectional threaded rod (19) is fixedly connected to a knob (21), and the knob (21) is located on the outside of the groove seat (18).

7. The EVA foaming molding device with integrated waste gas recovery according to claim 1, characterized in that: A filter plate (22) is provided on the left side of the recycling and processing box (13), and an activated carbon filter plate (23) is provided on the right side of the recycling and processing box (13).

8. The EVA foaming molding device with integrated waste gas recovery according to claim 1, characterized in that: The sealing cover (7) is rotatably connected to a sealing door (24) at its front end.

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