PVC plate forming die

Abstract

The utility model discloses a PVC plate forming die which comprises a bottom plate, a stand column fixedly connected to the upper surface of the bottom plate, a bearing table and a top plate fixedly connected to the surface of the stand column, a lower die fixedly connected to the upper surface of the bearing table, a hydraulic air cylinder fixedly connected to the upper surface of the top plate, and an upper die plate fixedly connected to the output end of the hydraulic air cylinder. A fixing frame is slidably connected to the lower surface of the upper mold plate, a forming pressing plate is arranged in the fixing frame, a water guide groove is formed in the lower surface of the upper mold plate, a water adding part and a water returning part are fixedly connected to the front surface and the rear surface of the upper mold plate correspondingly, a water storage tank is fixedly connected to the upper surface of the bottom plate, and a booster pump is fixedly connected to the upper surface of the water storage tank. And water guide hoses are arranged between the water outlet end of the booster pump and the water adding piece and between the water storage tank and the water return piece. Through the structure, the forming efficiency is improved, and the overall difficulty of mold overhauling work is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of PVC plates, in particular to a PVC plate forming mould. Background Art

[0002] Hot pressing is a commonly used PVC sheet forming method, and hot pressing molds usually use water cooling to cool the finished product. However, the water flow channel is easily damaged due to the alternating changes between cold and hot, and the cooling structure is usually located inside the mold, which increases the difficulty of repairing the cooling components, affecting the use effect of the PVC sheet forming mold. The "A PVC Sheet Forming Mold" disclosed on the China Patent Network has an application number of "202322012410.5". The mold is slidably installed inside two mounting plates through four dovetail sliders, and two molding blocks are fixedly installed on the four dovetail sliders, so that the staff can replace the two molding blocks conveniently, thereby improving the practicality of the mold by improving the convenience of replacing pressure plates of different sizes, but it can neither increase the contact area between the cooling medium and the mold, nor reduce the difficulty of repairing the cooling medium flow channel. Utility Model Content

[0003] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art, to provide a PVC sheet forming mold, to increase the contact area between the water-cooling medium and the mold, to improve the cooling and forming effect of the finished PVC sheet, to increase the flexibility of the mold's own components, and to reduce the difficulty of maintenance work on the water-cooling medium flow channel in the mold.

[0004] The utility model also provides a PVC sheet forming mold as described above, comprising: a bottom plate, the upper surface of the bottom plate is fixedly connected with a column, the surface of the column is fixedly connected with a load-bearing platform and a top plate, the upper surface of the load-bearing platform is fixedly connected with a lower mold, the upper surface of the top plate is fixedly connected with a hydraulic cylinder, the output end of the hydraulic cylinder is fixedly connected with an upper mold plate, the lower surface of the upper mold plate is slidably connected with a fixed frame, a forming pressing plate is arranged inside the fixed frame, when the mold is used, the upper surface of the forming pressing plate contacts the lower surface of the upper mold plate, the lower surface of the upper mold plate is provided with a water guide groove, the front and rear surfaces of the upper mold plate are respectively fixedly connected with a water adding part and a water return part, the water adding part and the water return part are both connected with the water guide groove, the upper surface of the bottom plate is fixedly connected with a water storage tank, the upper surface of the water storage tank is fixedly connected with a booster pump, and a water guide hose is arranged between the water outlet end of the booster pump and the water adding part, and between the water storage tank and the water return part.

[0005] According to the PVC sheet forming mold described in the utility model, the surface of the fixed frame and the lower surface of the upper mold plate are respectively provided with a water blocking strip and a receiving groove, and the water blocking strip is located inside the receiving groove to improve the waterproof performance.

[0006] According to the PVC sheet forming mold described in the utility model, the water adding part and the water returning part are both composed of a water storage box and a conduit, the conduit is fixedly connected to the water storage box, and one end of the conduit away from the water storage box penetrates into the inside of the water guide groove, thereby improving the convenience of repairing the water adding part and the water returning part.

[0007] According to the PVC sheet forming mold described in the utility model, the surface of the column and the surface of the water storage box are respectively provided with a slide groove and a slider, the slider is located inside the slide groove, and the slider is fixedly connected to the water storage box, so as to improve the stability of the water adding part and the water returning part when sliding up and down.

[0008] According to the PVC plate forming mold described in the utility model, a partition is fixedly connected to the upper surface of the load-bearing platform, and the partition is located between the water-conducting hose and the lower mold to limit the range of movement of the water-conducting hose.

[0009] According to the PVC plate forming mold described in the utility model, a circular arc block is fixedly connected to a side of the partition close to the water-conducting hose, and when the mold is used, the circular arc block contacts the water-conducting hose, thereby improving the effect of the partition.

[0010] According to the PVC sheet forming mold described in the utility model, the water blocking strip is made of silicone material, and the lower surface of the water blocking strip is in contact with the upper surface of the forming pressing plate, thereby improving the effect of the water blocking strip. Beneficial Effects

[0011] Compared with the prior art, this PVC sheet forming mold directly allows the cooling medium to flow on the upper surface of the forming platen through the upper mold plate, the fixed frame, the water guide groove, the water blocking strip, and the storage groove, thereby increasing the contact area between the cooling water source and the die and improving the efficiency of sheet cooling and forming. The left and right sliding structure of the upper die improves the convenience of cleaning the storage groove and reduces the difficulty of cleaning the mold cooling medium flow channel. The structure that is clamped with the right end of the fixed frame and the upper mold plate and the water blocking strip, the storage groove, and the water guide groove increase the complexity and sealing effect between the upper mold plate and the forming platen, limit the flow range of the cooling medium on the surface of the forming platen, and reduce the risk of cooling medium leakage at the edge of the forming platen. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0013] Figure 1 This is a front plan view of a PVC sheet forming mold of the utility model;

[0014] Figure 2 This is a back-view top view of a PVC sheet forming mold of the utility model;

[0015] Figure 3 This is a front view of a PVC sheet forming mold of the utility model;

[0016] Figure 4 The utility model is a PVC plate forming mold Figure 3 The structure diagram at A is enlarged;

[0017] Figure 5 This is a cross-sectional structural diagram of a water supply pipe and a water return pipe of a PVC sheet forming mold of the utility model.

[0018] Legend:

[0019] 1. Bottom plate; 2. Column; 3. Load-bearing platform; 4. Lower mold; 5. Upper mold plate; 6. Forming plate; 7. Hydraulic cylinder; 8. Top plate; 9. Water adding parts; 10. Water storage tank; 11. Booster pump; 12. Fixed frame; 13. Slide; 14. Slider; 15. Partition; 16. Arc block; 17. Water blocking strip; 18. Water return part; 19. Water guide hose; 20. Water guide groove; 21. Storage groove. DETAILED DESCRIPTION

[0020] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0021] Reference Figure 1-5 The utility model embodiment is a PVC sheet forming mold, which includes: a bottom plate 1, the upper surface of the bottom plate 1 is fixedly connected with a column 2, the surface of the column 2 is fixedly connected with a load-bearing platform 3 and a top plate 8, the upper surface of the load-bearing platform 3 is fixedly connected with a lower mold 4, the upper surface of the top plate 8 is fixedly connected with a hydraulic cylinder 7, the lower mold 4 is used to hold PVC sheet raw materials, wherein a heating plate is arranged between the load-bearing platform 3 and the lower mold 4 for heating and treating the raw materials, the output end of the hydraulic cylinder 7 is fixedly connected with an upper mold plate 5, the lower surface of the upper mold plate 5 is slidably connected with a fixed frame 12, and a forming pressing plate 6 is arranged inside the fixed frame 12. When the mold is used, the upper surface of the forming pressing plate 6 contacts with the lower surface of the upper mold plate 5, the hydraulic cylinder 7 provides the forming pressing plate 6 with power to press the raw materials, and the fixed frame 12 is used to improve the flexibility of the forming pressing plate 6 and improve the convenience of repairing the lower surface components of the upper mold plate 5.

[0022] Specifically, the raw material of the PVC sheet is evenly laid on the surface of the lower mold 4, and then the heating plate is turned on to directly increase the temperature of the lower mold 4 to heat treat the raw material placed on the surface of the lower mold 4. While the raw material is heated, the output end of the hydraulic cylinder 7 drives the upper mold plate 5 to descend, and the molding plate 6 contacts the raw material during the descent.

[0023] The lower surface of the upper mold plate 5 is provided with a water guide groove 20, and the water guide groove 20 uses its own volume to limit the total amount of water between the upper mold plate 5 and the forming plate 6. At the same time, since the flow resistance of the water source inside the water guide groove 20 is smaller than the flow resistance of the water flow between the upper mold plate 5 and the forming plate 6, the water guide groove 20 also serves as the main flow channel of the water source to limit the flow range of a large amount of water. The front and rear surfaces of the upper mold plate 5 are respectively fixedly connected with a water adding part 9 and a water returning part 18, and the water adding part 9 and the water returning part 18 are mutually connected with the water guide groove 20. They are all composed of a water storage box and a conduit, which is fixedly connected to the water storage box. The end of the conduit away from the water storage box passes through the interior of the water guide groove 20. The upper surface of the bottom plate 1 is fixedly connected to a water storage tank 10, and the upper surface of the water storage tank 10 is fixedly connected to a booster pump 11. A water guide hose 19 is arranged between the water outlet end of the booster pump 11 and the water adding part 9, and between the water storage tank 10 and the water return part 18. The above components form a circulating water cooling structure for cooling the formed raw materials, wherein the water storage boxes in the water adding part 9 and the water return part 18 are fixedly connected to the front and rear surfaces of the upper mold plate 5 through conduits.

[0024] Specifically, the booster pump 11 draws out the cold water in the water storage tank 10, and the cold water enters the water storage box of the water adding member 9 through the water guide hose 19, and the water source in the water storage box is affected by the pressure and enters between the upper mold plate 5 and the forming platen 6 through the conduit, and the water source between the upper mold plate 5 and the forming platen 6 directly enters the inside of the water guide groove 20, wherein since the space of the water guide groove 20 is larger than the gap between the upper mold plate 5 and the forming platen 6, the flow resistance of the water source in the water guide groove 20 is smaller than the flow resistance of the gap between the upper mold plate 5 and the forming platen 6. Resistance, therefore, the water guiding groove 20 serves as the main flow space of the water source, achieving the purpose of guiding the water source and limiting the flow range of the water source, and the volume of the water guiding groove 20 directly limits the maximum water source amount. When the water source amount is greater than the volume of the water guiding groove 20, the water source that subsequently enters the water guiding groove 20 directly presses the excess water source into the conduit, and the water source enters the water storage box in the return water member 18 through the conduit, thereby achieving the purpose of limiting the total amount of water source. The water source in the water storage box in the return water member 18 falls under the influence of gravity and enters the water storage tank 10 through the water guiding hose 19.

[0025] The surface of the fixed frame 12 and the lower surface of the upper mold plate 5 are respectively provided with a water blocking strip 17 and a receiving groove 21. The water blocking strip 17 is located inside the receiving groove 21. The water blocking strip 17 is made of silicone material, and the lower surface of the water blocking strip 17 contacts the upper surface of the forming press plate 6. The water blocking strip 17 reduces the hidden danger of water leakage. The surface of the column 2 and the surface of the water storage box are respectively provided with a slide groove 13 and a slider 14. The slider 14 is located inside the slide groove 13, and the slider 14 is fixedly connected to the water storage box. The slider 1 4 and the chute 13 improve the stability of the water adding member 9 and the water returning member 18 when they are in action. The upper surface of the load-bearing platform 3 is fixedly connected with a partition 15, and the partition 15 is located between the water guiding hose 19 and the lower mold 4. The side of the partition 15 close to the water guiding hose 19 is fixedly connected with an arc block 16. When the mold is used, the arc block 16 contacts the water guiding hose 19, and the partition 15 cooperates with the arc block 16 to limit the range of movement of the water guiding hose 19 and prevent the bent part of the water guiding hose 19 from entering between the two molds.

[0026] Specifically, the water adding part 9, the water returning part 18 and the upper mold plate 5 are in an integrated state. Therefore, during the lifting and lowering process of the upper mold plate 5, the water adding part 9 and the water returning part 18 slide up and down synchronously. At this time, the slider 14 and the slide groove 13 directly limit the range of movement of the water adding part 9 and the water returning part 18 on both sides. At the same time, during the descent of the water adding part 9 and the water returning part 18, the water guiding hose 19 is bent by pressure. After the water guiding hose 19 is bent and contacts the arc block 16, the bent part is affected by the arc protrusion and protrudes away from the partition 15, thereby preventing the bent part of the water guiding hose 19 from entering the middle of the upper and lower molds.

[0027] Working principle: The water guiding hose 19 is connected to the water adding part 9 and the water returning part 18 by means of a threaded joint. Therefore, when it is necessary to clean and inspect the internal condition of the water guiding groove 20, first separate the water guiding hose 19 from the water adding part 9 and the water returning part 18, and then apply a rightward pulling force to the right side of the fixed frame 12 to drive the forming platen 6 away from the upper mold plate 5. At this time, the water guiding groove 20 and the water blocking strip 17 are directly exposed to the outside, and the staff can directly observe the wear of the inner wall of the water guiding groove 20 and the surface of the water blocking strip 17. After the inspection is completed, push the fixed frame 12 to the left to reset the forming platen 6.

[0028] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A PVC sheet forming mold, characterized in that: include: A bottom plate (1), wherein the upper surface of the bottom plate (1) is fixedly connected to a column (2), the surface of the column (2) is fixedly connected to a load-bearing platform (3) and a top plate (8), the upper surface of the load-bearing platform (3) is fixedly connected to a lower mold (4), the upper surface of the top plate (8) is fixedly connected to a hydraulic cylinder (7), the output end of the hydraulic cylinder (7) is fixedly connected to an upper mold plate (5), the lower surface of the upper mold plate (5) is slidably connected to a fixed frame (12), a forming press plate (6) is arranged inside the fixed frame (12), and when the mold is used, the upper surface of the forming press plate (6) contacts the lower surface of the upper mold plate (5); The lower surface of the upper mold plate (5) is provided with a water guide groove (20); the front and rear surfaces of the upper mold plate (5) are respectively fixedly connected with a water adding member (9) and a water returning member (18); the water adding member (9) and the water returning member (18) are both interconnected with the water guide groove (20); the upper surface of the bottom plate (1) is fixedly connected with a water storage tank (10); the upper surface of the water storage tank (10) is fixedly connected with a booster pump (11); a water guide hose (19) is provided between the water outlet of the booster pump (11) and the water adding member (9), and between the water storage tank (10) and the water returning member (18).

2. A PVC sheet forming mold according to claim 1, characterized in that: The surface of the fixing frame (12) and the lower surface of the upper mold plate (5) are respectively provided with a water blocking strip (17) and a receiving groove (21), and the water blocking strip (17) is located inside the receiving groove (21).

3. A PVC sheet forming mold according to claim 1, characterized in that: The water adding member (9) and the water returning member (18) are both composed of a water storage box and a conduit, the conduit being fixedly connected to the water storage box, and the end of the conduit away from the water storage box passing through the interior of the water guide groove (20).

4. A PVC sheet forming mold according to claim 3, characterized in that: A slide groove (13) and a slider (14) are respectively provided on the surface of the upright column (2) and the surface of the water storage box. The slider (14) is located inside the slide groove (13), and the slider (14) is fixedly connected to the water storage box.

5. A PVC sheet forming mold according to claim 1, characterized in that: A partition plate (15) is fixedly connected to the upper surface of the load-bearing platform (3), and the partition plate (15) is located between the water-conducting hose (19) and the lower mold (4).

6. A PVC sheet forming mold according to claim 5, characterized in that: A circular arc block (16) is fixedly connected to a surface of the partition plate (15) close to the water-conducting hose (19); when the mold is used, the circular arc block (16) is in contact with the water-conducting hose (19).

7. A PVC sheet forming mold according to claim 2, characterized in that: The water blocking strip (17) is made of silicone material, and the lower surface of the water blocking strip (17) is in contact with the upper surface of the forming pressing plate (6).

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