Blister mold structure

Abstract

The utility model provides a blister mould structure, including upper die and lower die, be provided with lower die convex part on the top of lower die, the top of lower die convex part is provided with the forming recess that can adsorb the membrane piece and makes the membrane piece form, the bottom of upper die is provided with the pressing block that can push the membrane piece to the forming recess with the forming recess corresponding, the plan projection of pressing block covers the plan projection of corresponding forming recess, when the upper die and lower die are closed, the bottom surface and the top surface between forming recess of pressing block leave the gap for accommodating the membrane piece, the utility model has the advantages of: on the basis of prior art's upper die, the pressing block that can push the membrane piece to the forming recess has been increased on the bottom of upper die with the forming recess corresponding, through the increase pressing block can make the membrane piece better adhere to the forming recess of lower die, and the forming effect is more ideal.

Description

Technical Field

[0001] This utility model relates to the field of vacuum forming mold technology, and in particular to a vacuum forming mold structure with good film-mold bonding effect. Background Technology

[0002] A Chinese utility model patent with application number CN202120877933.4, entitled "A Vacuum Forming Mold for Manufacturing Car Decorative Films," discloses a vacuum forming mold for manufacturing car decorative films. The mold includes an upper mold, a lower mold, and a mold core. The upper mold has an upper cavity on its bottom surface, and the lower mold has a lower cavity on its top surface. The upper and lower mold cavities are closed to form a vacuum forming mold cavity. The mold core is placed within the vacuum forming mold cavity. Adjusting blocks are spaced apart in the upper mold cavity. The bottom surface of the adjusting blocks matches the curvature of the corresponding recessed portion on the top surface of the mold core. When the upper and lower molds are closed, the bottom surface of the adjusting blocks extends into the opening of the recessed portion on the top surface of the mold core, and a gap is left between the bottom surface of the adjusting blocks and the bottom surface of the recessed portion to accommodate the film. The advantages of this invention are: the adjusting block can contact the diaphragm, causing pre-deformation of the diaphragm before vacuum forming, reducing the deformation distance during vacuum forming and effectively avoiding surface pattern distortion caused by excessive deformation during vacuum forming. However, the adhesion between the diaphragm and the lower mold during use still has room for improvement, therefore the structure of the vacuum forming mold needs further improvement. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide a vacuum forming mold structure with good film-mold bonding effect in view of the above-mentioned existing technology.

[0004] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: This vacuum forming mold structure includes an upper mold and a lower mold. A lower mold protrusion is provided on the top of the lower mold, and a forming recess is provided on the top of the lower mold protrusion to adsorb a film and form the film. The characteristic is that: a pressing block is provided at the bottom of the upper mold corresponding to the forming recess to push the film towards the forming recess. The top view projection of the pressing block covers the top view projection of the corresponding forming recess. When the upper mold and the lower mold are aligned, a gap is left between the bottom surface of the pressing block and the top surface of the forming recess to accommodate the film.

[0005] As an improvement, N lower mold protrusions can preferably be arranged side by side on the lower mold, each lower mold protrusion being provided with a forming recess, and the pressure blocks are arranged one-to-one on the upper mold, where N is a natural number greater than 1 and less than 12.

[0006] In a further improvement, the forming recess on each lower die protrusion can preferably include a large recess with a rectangular bottom surface and a small recess with an elliptical bottom surface, and the pressing block includes a large pressing component corresponding to the large recess and a small pressing component corresponding to the small recess.

[0007] As a further improvement, the bottom surface of the small pressure piece can preferably be an elliptical protrusion, which is adapted to the outer contour of the small concave part.

[0008] As a further improvement, the bottom surface of the large pressure piece can preferably be a rectangular protrusion, which is adapted to the outer contour of the large concave part.

[0009] As an improvement, the upper mold may preferably include an upper template and an upper mold frame, the pressure block is located in the cavity formed by the upper template and the upper mold frame, an upper mold air inlet is provided on the bottom surface of the cavity, and the pressure block is detachably connected to the upper template.

[0010] Further improvements include the inclusion of spaced partition blocks that separate the pressure blocks within the cavity, with notches on the partition blocks corresponding to the upper mold air inlet, and baffles on the upper mold plate corresponding to the upper mold air inlet. This results in better vacuuming, the baffles blocking dust, and extended air passages, leading to more ideal performance.

[0011] In a further improvement, the upper template and the upper mold frame can preferably be connected together by an L-shaped reinforcing member, and a pressure block recess is provided on the pressure block to accommodate the L-shaped reinforcing member. This makes the structure more robust.

[0012] As an improvement, the lower mold protrusions are preferably spaced apart on the fixed module, which has suction holes and is detachably connected to the base of the lower mold. This facilitates disassembly and installation.

[0013] As an improvement, the lower mold may preferably be connected to a locking module that can lock the upper and lower molds when they are aligned. After the molds are closed, the upper and lower molds are firmly fixed.

[0014] Compared with the prior art, the advantages of this utility model are as follows: Based on the existing upper mold, a pressure block is added to the bottom of the upper mold corresponding to the forming recess to push the film towards the forming recess. By adding the pressure block, the film can better fit the forming recess of the lower mold, resulting in a more ideal forming effect. N lower mold protrusions are arranged side by side on the lower mold, and each lower mold protrusion is provided with a forming recess. The pressure blocks are correspondingly arranged on the upper mold. Multiple forming films can be produced in one mold closing process, greatly improving the forming efficiency. The pressure block is divided into two parts, which allows the pressure block to better fit the film onto the corresponding recess, resulting in a higher fit and further improving the forming effect of the film. Attached Figure Description

[0015] Figure 1 This is a perspective view of an embodiment of the present utility model;

[0016] Figure 2 for Figure 1 Top view;

[0017] Figure 3 yes Figure 2 Cross-sectional view along line AA;

[0018] Figure 4 yes Figure 2 Cross-sectional view along the BB line;

[0019] Figure 5 yes Figure 1 Exploded structural diagram;

[0020] Figure 6 yes Figure 5 A three-dimensional view of the already decomposed upper mold from another angle;

[0021] Figure 7 yes Figure 6 Further structural decomposition diagram;

[0022] Figure 8 yes Figure 5 A further structural decomposition diagram. Detailed Implementation

[0023] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0024] like Figures 1 to 8 As shown, the vacuum forming mold structure of this embodiment includes an upper mold 1 and a lower mold 2. A lower mold protrusion 21 is provided on the top of the lower mold 2. A forming recess 22 is provided on the top of the lower mold protrusion 21 to adsorb the film and form the film. A pressing block is provided on the bottom of the upper mold 1 corresponding to the forming recess 22 to push the film towards the forming recess 22. The top view projection of the pressing block covers the top view projection of the corresponding forming recess 22. When the upper mold 1 and the lower mold 2 are engaged, a gap is left between the bottom surface of the pressing block and the top surface of the forming recess 22 to accommodate the film.

[0025] N lower mold protrusions 21 are arranged side by side on the lower mold 2. Each lower mold protrusion 21 has a forming recess 22. Pressure blocks are correspondingly arranged on the upper mold 1. N is a natural number greater than 1 and less than 12. Each forming recess 22 on the lower mold protrusion 21 includes a large recess with a rectangular bottom surface and a small recess with an elliptical bottom surface. The pressure blocks include a large pressure piece 11 corresponding to the large recess and a small pressure piece 12 corresponding to the small recess. The bottom surface of the small pressure piece 12 is an elliptical protrusion that fits the outer contour of the small recess. The bottom surface of the large pressure piece 11 is a rectangular protrusion that fits the outer contour of the large recess.

[0026] The upper mold 1 includes an upper template 10 and an upper mold frame 101. A pressure block is located in a cavity formed by the upper template 10 and the upper mold frame 101. An upper mold air inlet 13 is provided on the bottom surface of the cavity. The pressure block is detachably connected to the upper template 10. Dividing blocks 14 are spaced apart in the cavity to separate the pressure blocks. Dividing blocks 14 corresponding to the upper mold air inlet 13 have notches 141. A baffle 15 is provided on the upper template 10 corresponding to the upper mold air inlet 13. The upper template 10 and the upper mold frame 101 are connected together by an L-shaped reinforcing member 16. A pressure block recess 111 is provided on the pressure block to accommodate the L-shaped reinforcing member. Lower mold protrusions 21 are spaced apart on a fixed module 20. Air suction holes are distributed on the fixed module 20. The fixed module 20 is detachably connected to the base of the lower mold 2. The lower mold 2 is connected to a locking module 3 that can lock the upper mold 1 and the lower mold 2 when they are aligned.

[0027] Working principle: This utility model is based on the original vacuum forming mold structure, by adding a pressure block in the upper mold and adapting the pressure block to the forming concave part of the lower mold protrusion. In this way, when the upper mold and the lower mold are aligned, the film can be squeezed by the pressure block and better fit into the forming concave part, resulting in a better film forming effect.

Claims

1. A vacuum forming mold structure, comprising an upper mold (1) and a lower mold (2), wherein a lower mold protrusion (21) is provided on the top of the lower mold (2), and a forming recess (22) is provided on the top of the lower mold protrusion (21) for adsorbing a film and forming the film, characterized in that: The bottom of the upper mold (1) corresponding to the forming recess (22) is provided with a pressure block that can push the diaphragm towards the forming recess (22). The top view projection of the pressure block covers the top view projection of the corresponding forming recess (22). When the upper mold (1) and the lower mold (2) are engaged, a gap is left between the bottom surface of the pressure block and the top surface of the forming recess (22) to accommodate the diaphragm.

2. The vacuum forming mold structure according to claim 1, characterized in that: N lower mold protrusions (21) are arranged side by side on the lower mold (2), and each lower mold protrusion (21) is provided with a forming recess (22). The pressure blocks are arranged one-to-one on the upper mold (1), and N is a natural number greater than 1 and less than 12.

3. The vacuum forming mold structure according to claim 2, characterized in that: Each molded recess (22) on the lower mold protrusion (21) includes a large recess with a rectangular bottom surface and a small recess with an elliptical bottom surface. The pressure block includes a large pressure piece (11) corresponding to the large recess and a small pressure piece (12) corresponding to the small recess.

4. The vacuum forming mold structure according to claim 3, characterized in that: The bottom surface of the small pressure piece (12) is an elliptical protrusion that fits the outer contour of the small concave part.

5. The vacuum forming mold structure according to claim 3, characterized in that: The bottom surface of the large pressure piece (11) is a rectangular protrusion that fits the outer contour of the large concave part.

6. The vacuum forming mold structure according to any one of claims 2 to 5, characterized in that: The upper mold (1) includes an upper template (10) and an upper mold frame (101). The pressure block is located in the cavity formed by the upper template (10) and the upper mold frame (101). An upper mold air inlet (13) is provided on the bottom surface of the cavity. The pressure block is detachably connected to the upper template (10).

7. The vacuum forming mold structure according to claim 6, characterized in that: In the cavity, there are spaced-apart partition blocks (14) that can separate the pressure blocks one by one. The partition block (14) corresponding to the upper mold air inlet (13) is provided with a partition block notch (141), and the upper mold plate (10) corresponding to the upper mold air inlet (13) is provided with a baffle (15).

8. The vacuum forming mold structure according to claim 6, characterized in that: The upper template (10) and the upper mold frame (101) are connected together by an L-shaped reinforcing member (16), and a pressure block recess (111) is provided on the pressure block to accommodate the L-shaped reinforcing member.

9. The vacuum forming mold structure according to any one of claims 2 to 5, characterized in that: The lower mold protrusions (21) are spaced apart on the fixed module (20), and the fixed module (20) has suction holes. The fixed module (20) is detachably connected to the base of the lower mold (2).

10. The vacuum forming mold structure according to any one of claims 1 to 5, characterized in that: The lower mold (2) is connected to a locking module (3) that can lock the upper mold (1) and the lower mold (2) when they are engaged.

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