Demolding structure of mold for EPP product processing

Abstract

The utility model relates to the technical field of EPP product processing, in particular to a demoulding structure of a mould for EPP product processing, which comprises an EPP processing mould main body, the upper end and the lower end of the EPP processing mould main body are respectively provided with a forming cavity and a steam chamber, and through steam demoulding holes are uniformly distributed between the forming cavity and the steam chamber at intervals. A first steam channel and a second steam channel are further formed in the positions, opposite to the steam chamber, of the EPP machining mold body correspondingly, plugging supporting blocks are movably clamped in the steam demolding holes correspondingly, the bottoms of the plugging supporting blocks are jointly connected with a fixing plate, and hydraulic cylinders are evenly installed at the bottom of the fixing plate at intervals. According to the demolding structure of the mold for EPP product machining, the steam demolding hole is tightly blocked through the blocking supporting block, so that the bottom of the forming cavity is smooth, burrs at the bottom of an EPP product are reduced, meanwhile, the blocking supporting block is accurately lifted through the hydraulic cylinder, and the production quality is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of EPP product processing, in particular to a demoulding structure of a mold for EPP product processing. Background Art

[0002] EPP (Expanded Polypropylene) is a lightweight, high-strength foam plastic with good impact resistance, heat insulation and chemical corrosion resistance. It is widely used in many industries such as automobiles, packaging, construction, sports equipment and toys. EPP products are usually formed by mold processing, and the design of the demoulding structure is crucial to ensure smooth demoulding of the product.

[0003] Existing EPP products use steam demoulding technology to utilize the pressure and heat of steam to help the product to be smoothly ejected from the mold. For example, a steam ejection structure for EPP product demoulding disclosed in publication number CN219006707U uses the steam pressure to push the steam ejector column up, and after demoulding, the steam ejector column is reset by a spring reset mechanism. However, the steam ejector column needs to be raised and lowered relative to the mold core, resulting in an insufficient fit between the steam ejector column and the mold core, which causes more burrs on the bottom of the EPP product. Utility Model Content

[0004] The utility model aims to provide a demoulding structure of a mold for processing EPP products, so as to solve the problem proposed in the above-mentioned background technology that the demoulding structure of the mold for processing EPP products on the market currently pushes the steam top column up by the pressure of steam, and resets the steam top column by a spring reset mechanism after demoulding, but the steam top column needs to be raised and lowered relative to the mold core, resulting in an insufficient fit between the steam top column and the mold core, resulting in a large number of burrs on the bottom of the EPP product.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a demolding structure of a mold for processing EPP products, comprising an EPP processing mold body, wherein a molding cavity and a steam chamber are respectively provided at the upper and lower ends of the EPP processing mold body, and through steam demolding holes are evenly distributed between the molding cavity and the steam chamber, and a first steam channel and a second steam channel are respectively provided on two opposite sides of the EPP processing mold body, and a steam chamber air circulation hole connected to the steam chamber is also provided on the side of the EPP processing mold body, and sealing support blocks are respectively movably connected in the steam demolding holes, and the bottom of the sealing support blocks are commonly connected to a fixed plate, and hydraulic cylinders are evenly installed at the bottom of the fixed plate.

[0006] Preferably, the cross section of the steam chamber is an inverted T-shaped structure, and the lower portion of the steam chamber is also clamped with a limiting plate, and the upper portion of the steam chamber is movably clamped with a fixed plate.

[0007] Preferably, the EPP processing mold body is screwed and fixed to the limiting plate, and a support plate is also screwed and fixed to the bottom of the EPP processing mold body, and the hydraulic cylinder is screwed and fixed to the support plate.

[0008] Preferably, the hydraulic cylinder passes through the limiting plate, and a sealing seat which is threadedly fixed to the upper end of the limiting plate is also tightly sleeved on the fixing portion of the hydraulic cylinder.

[0009] Preferably, the air circulation hole of the steam chamber is opened at a position above the limiting plate, and the first steam channel and the second steam channel are arranged at a position above the fixing plate moved to the lowest limit position.

[0010] Preferably, the upper portion of the blocking support block is a conical frustum structure, and the lower portion of the blocking support block is a cylindrical structure.

[0011] Compared with the prior art, the utility model has the following beneficial effects: the demoulding structure of the mold for processing EPP products tightly seals the steam demoulding hole through the sealing support block, so that the bottom of the molding cavity is flat, reducing the generation of burrs at the bottom of the EPP product, and the sealing support block is accurately lifted and lowered by the hydraulic cylinder to ensure production quality. The demoulding structure of the mold for processing EPP products is provided with a steam chamber air circulation hole in the steam chamber, which can be circulated and dried when the steam stops entering the steam chamber, avoiding the formation of water droplets in the steam chamber and causing rust on the structure in the steam chamber, which helps to extend the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic structural diagram of a demoulding structure of a mold for processing EPP products according to the utility model;

[0013] Figure 2 It is a schematic diagram of the descending structure of the blocking support block of the demoulding structure of a mold for processing EPP products according to the utility model;

[0014] Figure 3 It is a top view of an EPP processing mold of a demoulding structure of a mold for processing an EPP product according to the utility model;

[0015] Figure 4 It is a top view of the connection structure of the blocking support block and the fixed plate of the demoulding structure of the mold for processing EPP products of the utility model;

[0016] Figure 5 It is a bottom view of the connection structure of the hydraulic cylinder and the fixed plate of the demoulding structure of the mold for EPP product processing of the utility model.

[0017] In the figure: 1. EPP processing mold body; 101. Molding cavity; 102. First steam channel; 103. Steam chamber air circulation hole; 104. Second steam channel; 105. Steam chamber; 106. Steam demoulding hole; 2. Sealing support block; 3. Hydraulic cylinder; 301. Sealing seat; 4. Fixed plate; 5. Limiting plate; 6. Support plate. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-5The utility model provides a technical solution: a demoulding structure of a mold for processing EPP products, including an EPP processing mold body 1, wherein a molding cavity 101 and a steam chamber 105 are respectively opened at the upper and lower ends of the EPP processing mold body 1, and through steam demoulding holes 106 are evenly spaced and distributed between the molding cavity 101 and the steam chamber 105, and the EPP processing mold body 1 is also respectively opened on the two opposite sides of the steam chamber 105. A first steam channel 102 and a second steam channel 104 are respectively opened, and the cross section of the steam chamber 105 is an inverted T-shaped structure, and the lower part of the steam chamber 105 is also clamped with a limiting plate 5, and the upper part of the steam chamber 105 is movably clamped with a fixed plate 4. After the blocking support block 2 moves down, the steam demoulding hole 1 06 is connected with the steam chamber 105, so that the steam entering the steam chamber 105 through the first steam channel 102 and the second steam channel 104 can be discharged through the steam demoulding hole 106, so as to eject the EPP product formed in the molding cavity 101, and realize the efficient demoulding processing of the EPP product. When the fixed plate 4 drives the blocking support block 2 to move downward synchronously, the steam chamber 105 plays a role of limiting and stabilizing the fixed plate 4, and the side of the EPP processing mold body 1 is also provided with a steam chamber air circulation hole 103 connected with the steam chamber 105. The EPP processing mold body 1 is screwed and fixed to the limiting plate 5, and the bottom of the EPP processing mold body 1 is also screwed with a support plate 6, and the hydraulic cylinder 3 is screwed and fixed on the support plate 6. This structure can limit The positioning plate 5 and the support plate 6 are relatively stable to the EPP processing mold body 1, ensuring the overall structural strength of the EPP processing mold body 1 and ensuring the reliable installation and positioning of the hydraulic cylinder 3. The steam demoulding hole 106 is movably connected with a plugging support block 2, and the top of the plugging support block 2 is a conical truncated cone structure, and the bottom of the plugging support block 2 is a cylindrical structure. This structure allows the plugging support block 2 to be limited by the upper conical truncated cone structure to ensure that after the plugging support block 2 rises into place, the upper end surface of the plugging support block 2 is flush with the bottom of the molding cavity 101, and the gap at the bottom of the molding cavity 101 is closed, reducing the burrs generated at the bottom of the EPP product. The plugging support block 2 can ensure the plugging through the size difference between the bottom cylindrical structure and the upper conical truncated cone structure. The support block 2 is closed tightly, and the bottom of the blocking support block 2 is connected with a fixed plate 4. The steam chamber air circulation hole 103 is opened above the limit plate 5. The first steam channel 102 and the second steam channel 104 are arranged above the fixed plate 4 when it moves to the lower limit position. When the blocking support block 2 blocks the steam demoulding hole 106, this structure is in a relatively sealed state between the fixed plate 4 and the limit plate 5, so that the steam chamber 105 is connected with the air circulation pump through the steam chamber air circulation hole 103, ensuring that the steam chamber 105 is relatively dry, so as to prevent the internal structure of the steam chamber 105 from being in a wet state for a long time and affecting the service life. In addition, hydraulic cylinders 3 are evenly installed at the bottom of the fixed plate 4, and the hydraulic cylinders 3 run through the limit plate 5.The fixed part of the hydraulic cylinder 3 is also fastened with a sealing seat 301 screwed and fixed to the upper end of the limit plate 5. This structure allows the limit plate 5 to play a role in the installation of the hydraulic cylinder 3. At the same time, the sealing seat 301 plays a role in sealing the penetration part between the hydraulic cylinder 3 and the limit plate 5.

[0020] Working principle: When using the demoulding structure of the mold for processing EPP products, first, after the EPP is processed in the molding cavity 101 of the EPP processing mold body 1, the hydraulic cylinder 3 drives the fixed plate 4 to drive the blocking support block 2 to move downward under the positioning of the support plate 6, so that the steam demoulding hole 106 is connected with the steam chamber 105. The limit plate 5 plays a role in stabilizing the installation of the hydraulic cylinder 3, and the steam chamber 105 plays a role in limiting the downward movement of the fixed plate 4. When the blocking support block 2 moves downward, the first steam channel 102 and the second steam channel 104 introduce steam into the steam chamber 105 through the electric heating steam generator. , the steam is pushed upward during the discharge from the steam demoulding hole 106 to realize the demoulding of the EPP product. The blocking support block 2 is moved upward again to block the steam demoulding hole 106 to ensure that the bottom surface of the molding cavity 101 is flat and the molding quality of the EPP product is ensured. The sealing seat 301 seals the penetration part of the hydraulic cylinder 3 and the limit plate 5 to ensure the relative sealing between the fixed plate 4 and the limit plate 5. At this time, the steam chamber 105 is circulated and dried through the steam chamber air circulation hole 103 to prevent moisture in the steam chamber 105 from affecting the service life, thereby completing a series of tasks.

[0021] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A demoulding structure for a mold for processing an EPP product, comprising an EPP processing mold body (1), characterized in that: The upper and lower ends of the EPP processing mold body (1) are respectively provided with a molding cavity (101) and a steam chamber (105), and through steam demoulding holes (106) are evenly spaced between the molding cavity (101) and the steam chamber (105). The EPP processing mold body (1) is also provided with a first steam channel (102) and a second steam channel (104) on two sides opposite to the steam chamber (105), and a steam chamber air circulation hole (103) communicating with the steam chamber (105) is also provided on the side of the EPP processing mold body (1). The steam demoulding holes (106) are respectively movably connected with a blocking support block (2), and the bottom of the blocking support block (2) is commonly connected with a fixing plate (4), and hydraulic cylinders (3) are evenly spaced and installed at the bottom of the fixing plate (4).

2. The demoulding structure of a mold for processing EPP products according to claim 1, characterized in that: The cross section of the steam chamber (105) is an inverted T-shaped structure, and the lower part of the steam chamber (105) is also clamped with the limiting plate (5), and the upper part of the steam chamber (105) is movably clamped with the fixing plate (4).

3. The demoulding structure of a mold for processing EPP products according to claim 2, characterized in that: The EPP processing mold body (1) is screwed and fixed to the limit plate (5), and a support plate (6) is also screwed and fixed to the bottom of the EPP processing mold body (1), and the hydraulic cylinder (3) is screwed and fixed to the support plate (6).

4. The demoulding structure of a mold for processing EPP products according to claim 2, characterized in that: The hydraulic cylinder (3) passes through the limiting plate (5), and a sealing seat (301) is fastened and sleeved on the fixed part of the hydraulic cylinder (3) and is screwed and fixed to the upper end of the limiting plate (5).

5. The demoulding structure of a mold for processing EPP products according to claim 1, characterized in that: The steam chamber air circulation hole (103) is opened at the upper part of the limiting plate (5), and the first steam channel (102) and the second steam channel (104) are arranged at the upper part of the fixing plate (4) moved to the lowermost limit position.

6. The demoulding structure of a mold for processing EPP products according to claim 1, characterized in that: The upper portion of the blocking support block (2) is a conical truncated cone structure, and the lower portion of the blocking support block (2) is a cylindrical structure.

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