Paper-plastic bottle forming mold

Abstract

The utility model provides a paper-plastic bottle forming die which comprises a lower die base, an upper die base and a male die assembly, the upper side of the lower die base is movably provided with the upper die base, the right end of the lower die base is fixedly provided with the male die assembly, and the middle of the upper side of the lower die base is sunken downwards to form a lower die cavity. Compared with the prior art, the die has the advantages that the lower die base and the upper die base are arranged and abut against raw materials attached to the inner walls of the upper die cavity and the lower die cavity along with expansion of the air bag, the shape of the air bag is the same as that of the inner walls of the upper die cavity and the lower die cavity after die assembly, and then the male die is formed to shape the raw materials; after returning to a normal state, the air bag is separated from the inner wall of the product and can be easily demolded from the product, shape manufacturing which cannot be completed by a traditional concave-convex mold can be completed, and the problem of production of part of paper-plastic products needing chamfering is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of die equipment, and particularly relates to a paper-plastic bottle forming die. Background Art

[0002] Traditional pulp molding is produced by concave-convex dies. Once the product has an inclined taper, the traditional concave-convex dies cannot be closed for production. Bottles with an inclined taper require precise die design during molding to ensure that the molded product can be smoothly demolded. However, traditional paper-plastic forming dies often adopt a vertical design and cannot effectively adapt to products with an inclined taper. Conventional countermeasures for this problem include assembling multi-part dies. Although relatively complex shapes can be achieved, it increases the complexity and cost of die manufacturing. At the same time, during the production process, the assembly of multiple parts may also cause a reduction in production efficiency and difficulties in quality control. Therefore, we hope to design a paper-plastic bottle forming die with a novel structure to solve this problem. Summary of the Utility Model

[0003] Aiming at the deficiencies of the existing technology, the purpose of the utility model is to provide a paper-plastic bottle forming die to solve the problems proposed in the above background art.

[0004] The utility model is realized through the following technical solutions: A paper-plastic bottle forming die, comprising: a lower die base, an upper die base, and a convex die assembly. The upper die base is movably installed on the upper side of the lower die base, and the convex die assembly is fixed to the right end of the lower die base;

[0005] A lower die cavity is formed by a downward depression in the middle of the upper side of the lower die base, and a guiding hole is respectively opened downward at each of the four corners of the upper surface of the lower die base;

[0006] An upper die cavity is formed by an upward depression in the middle of the lower surface of the upper die base, and a guide post is respectively provided at each of the four corners of the lower end of the upper die base;

[0007] The convex die assembly includes an airbag, a clamping block, a mounting plate, and an air pipe. The right end of the airbag is fixedly connected to the left end of the clamping block, the right end of the clamping block is fixedly connected to the middle of the left surface of the mounting plate, and the air pipe is provided in the middle of the right surface of the mounting plate.

[0008] As a preferred embodiment, the upper end and the right end of the lower die cavity are both designed to be open. The left end of the lower die cavity does not penetrate the left end of the lower die base. The size and structure of the lower die cavity match the size and structure of the outer wall of the upper half of the product. The upper die cavity and the lower die cavity together can form a complete product outer shape structure, serving the purpose of shaping the product.

[0009] As a preferred embodiment, the lower end and the right end of the upper mold cavity are both designed with openings. The left end of the upper mold cavity does not penetrate the left end of the upper mold base. The size and structure of the upper mold cavity match the size and structure of the outer wall of the lower part of the product.

[0010] As a preferred embodiment, a first threaded hole is respectively provided on the lower middle side, the front upper side and the rear upper side of the right end of the lower mold base. A first fixing hole is respectively formed by penetrating leftward on the lower middle side, the front upper side and the rear upper side of the right surface of the mounting plate.

[0011] The size and distribution position of the first fixing hole match the size and distribution position of the first threaded hole.

[0012] As a preferred embodiment, the size and structure of the upper half of the clamping block match the size and structure of the right end part of the upper mold cavity, and the size and structure of the lower half of the clamping block match the size and structure of the right end part of the lower mold cavity.

[0013] As a preferred embodiment, a second threaded hole is respectively provided on the upper side and the lower side of the right surface of the clamping block. A second fixing hole is respectively provided on the upper side and the lower side of the right surface of the mounting plate. The size and distribution position of the second fixing hole match the size and distribution position of the second threaded hole.

[0014] As a preferred embodiment, the length of the airbag in the normal state is less than the lengths of the lower mold cavity and the upper mold cavity. A gas hole is formed by penetrating leftward in the middle of the clamping block. The left end of the gas hole is communicated with the right end of the airbag. The right end of the airbag is communicated with the air pipe through the gas hole. Using the airbag as the convex mold can better perform demolding.

[0015] After adopting the above technical solution, the beneficial effects of the present utility model are as follows: By setting the lower mold base and the upper mold base, the upper mold base and the lower mold base are closed. The airbag is blown up and expanded by compressed air. As the airbag expands, it abuts against the raw materials adhering to the inner walls of the upper mold cavity and the lower mold cavity. The shape of the airbag will be the same as the shape of the inner wall after the upper mold cavity and the lower mold cavity are closed, and then a convex mold is formed to shape the raw materials. After the molding is completed, the gas in the airbag is released, and the airbag quickly shrinks. After returning to the normal state, it is separated from the inner wall of the product and can be easily demolded from it. It can complete the shape manufacturing that cannot be completed by traditional concave and convex molds, and solves the production of some paper-plastic products that require chamfering.

[0016] The setting of the clamping block can position the right end between the upper mold cavity and the lower mold cavity, ensuring that there is a limiting structure for the part of the product located at the right end of the upper mold cavity and the lower mold cavity, greatly improving the final finished product quality of the product. Moreover, the clamping block and the mounting plate are of a split structure. Once the airbag behind the clamping block is damaged, it can be removed and replaced, reducing the difficulty of subsequent maintenance. Description of the Drawings

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a schematic diagram of the overall structure of a paper-plastic bottle forming mold of the present invention.

[0019] Figure 2 It is a schematic diagram of the connection between the airbag and the clamping block of a paper-plastic bottle forming mold of the present invention.

[0020] Figure 3 It is a schematic diagram of the connection between the mounting plate and the air pipe of a paper-plastic bottle forming mold of the present invention.

[0021] Figure 4 It is a schematic diagram of the structure of the product to be produced.

[0022] In the figure, 100 - lower mold base, 110 - lower mold cavity, 120 - guide hole, 130 - first threaded hole;

[0023] 200 - upper mold base, 210 - upper mold cavity, 220 - guide post;

[0024] 300 - punch assembly, 310 - airbag, 320 - clamping block, 321 - second threaded hole, 322 - air hole, 330 - mounting plate, 331 - first fixing hole, 332 - second fixing hole, 340 - air pipe. Specific embodiments

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0026] Please refer to Figures 1 to 4 , the present invention provides a technical solution: a paper-plastic bottle forming mold, including: a lower mold base 100, an upper mold base 200, and a punch assembly 300. The upper mold base 200 is movably installed on the upper side of the lower mold base 100, and the punch assembly 300 is fixed to the right end of the lower mold base 100;

[0027] In the middle of the upper side of the lower die base 100, a lower die cavity 110 is formed by downward depression, and a guiding hole 120 is respectively opened downward at four corners of the upper surface of the lower die base 100;

[0028] In the middle of the lower surface of the upper die base 200, an upper die cavity 210 is formed by upward depression, and a guide post 220 is respectively arranged at four corners of the lower end of the upper die base 200;

[0029] The punch assembly 300 includes an airbag 310, a clamping block 320, a mounting plate 330 and an air pipe 340. The right end of the airbag 310 is fixedly connected to the left end of the clamping block 320, the right end of the clamping block 320 is fixedly connected to the middle of the left surface of the mounting plate 330, and the air pipe 340 is arranged in the middle of the right surface of the mounting plate 330.

[0030] Please refer to Figures 1 to 4 , the upper end and the right end of the lower die cavity 110 are both designed with openings. The left end of the lower die cavity 110 does not penetrate the left end of the lower die base 100. The size and structure of the lower die cavity 110 match the size and structure of the outer wall of the upper half of the product. The upper die cavity 210 and the lower die cavity 110 together can form a complete product outer shape structure, serving the purpose of shaping the product.

[0031] The lower end and the right end of the upper die cavity 210 are both designed with openings. The left end of the upper die cavity 210 does not penetrate the left end of the upper die base 200. The size and structure of the upper die cavity 210 match the size and structure of the outer wall of the lower half of the product.

[0032] A first threaded hole 130 is respectively opened at the lower middle side, the front upper side and the rear upper side of the right end of the lower die base 100. A first fixing hole 331 is respectively formed by penetrating leftward at the lower middle side, the front upper side and the rear upper side of the middle of the right surface of the mounting plate 330;

[0033] The size and distribution position of the first fixing hole 331 match the size and distribution position of the first threaded hole 130.

[0034] As the first embodiment of the present utility model, by providing a lower die base 100 and an upper die base 200, since the size and structure of the lower die cavity 110 match the size and structure of the outer wall of the upper part of the product, and the size and structure of the upper die cavity 210 match the size and structure of the outer wall of the lower part of the product, it enables the upper die cavity 210 and the lower die cavity 110 to form a complete product outer shape structure together. During production, an external feeding device is used to evenly apply slurry to the upper die cavity 210 and the lower die cavity 110, and then the upper die base 200 and the lower die base 100 are clamped. Subsequently, an external air supply device is started to supply air into the trachea 340, and the airbag 310 is blown up and expanded by the compressed air. As the airbag 310 expands, it abuts against the raw materials adhering to the inner walls of the upper die cavity 210 and the lower die cavity 110. The shape of the airbag 310 will be the same as the shape of the inner wall after the upper die cavity 210 and the lower die cavity 110 are clamped, thereby forming a convex die to shape the raw materials. After molding is completed, the gas in the airbag 310 is released, and the airbag 310 quickly shrinks. After returning to its normal state, it separates from the inner wall of the product and can be easily demolded, capable of manufacturing shapes that cannot be completed by traditional concave and convex dies, and solving the production of some paper-plastic products that require chamfering.

[0035] Please refer to Figure 2 , the size and structure of the upper half of the clamping block 320 match the size and structure of the right end part of the upper die cavity 210, and the size and structure of the lower half of the clamping block 320 match the size and structure of the right end part of the lower die cavity 110.

[0036] On the upper and lower sides of the right surface of the clamping block 320, a second threaded hole 321 is respectively opened, and on the upper and lower sides of the right surface of the mounting plate 330, a second fixing hole 332 is respectively opened. The size and distribution position of the second fixing hole 332 match the size and distribution position of the second threaded hole 321.

[0037] The length of the airbag 310 in its normal state is less than the lengths of the lower die cavity 110 and the upper die cavity 210. A gas hole 322 is formed by penetrating the middle of the clamping block 320 to the left. The left end of the gas hole 322 is communicated with the right end of the airbag 310, and the right end of the airbag 310 is communicated with the trachea 340 through the gas hole 322. Using the airbag 310 as a convex die can better perform demolding.

[0038] As the second embodiment of the present utility model, based on the above first embodiment, the setting of the clamping block 320 can position the right end between the upper die cavity 210 and the lower die cavity 110, ensuring that the part of the product located at the right ends of the upper die cavity 210 and the lower die cavity 110 has a limiting structure, greatly improving the final finished product quality of the product. Moreover, the clamping block 320 and the mounting plate 330 are of a split structure. Once the airbag 310 behind the clamping block 320 is damaged, it can be removed and replaced, reducing the difficulty of subsequent maintenance.

[0039] The above are only the preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A paper-plastic bottle forming mold, comprising: A lower die base (100), an upper die base (200) and a punch assembly (300), wherein the upper die base (200) is movably mounted on the upper side of the lower die base (100), and the punch assembly (300) is fixed on the right end of the lower die base (100); The middle of the upper side of the lower die base (100) is recessed downward to form a lower die cavity (110), and a guide hole (120) is respectively opened downward at four corners of the upper surface of the lower die base (100); The middle of the lower surface of the upper die seat (200) is recessed upward to form an upper die cavity (210), and four corners at the lower end of the upper die seat (200) are respectively provided with a guide column (220); The male mold assembly (300) comprises an air bag (310), a clamping block (320), a mounting plate (330) and an air pipe (340); the right end of the air bag (310) is fixedly connected to the left end of the clamping block (320); the right end of the clamping block (320) is fixedly connected to the middle of the left surface of the mounting plate (330); and the air pipe (340) is arranged in the middle of the right surface of the mounting plate (330).

2. A paper-plastic bottle forming mold as claimed in claim 1, characterized in that: The upper end and the right end of the lower mold cavity (110) are both open, and the left end of the lower mold cavity (110) does not penetrate the left end of the lower mold base (100). The size and structure of the lower mold cavity (110) match the size and structure of the outer wall of the upper half of the product.

3. A paper-plastic bottle forming mold as claimed in claim 1, characterized in that: The lower end and the right end of the upper mold cavity (210) are both open, and the left end of the upper mold cavity (210) does not penetrate the left end of the upper mold base (200). The size and structure of the upper mold cavity (210) match the size and structure of the outer wall of the lower half of the product.

4. A paper-plastic bottle forming mold as claimed in claim 3, characterized in that: A threaded hole (130) is respectively formed at the middle lower side, the front upper side and the rear upper side of the right end of the lower die seat (100); and a fixing hole (331) is respectively formed through the middle lower side, the front upper side and the rear upper side of the right surface of the mounting plate (330) to the left; The size and distribution position of the fixing hole 1 (331) match the size and distribution position of the threaded hole 1 (130).

5. A paper-plastic bottle forming mold as claimed in claim 1, characterized in that: The size and structure of the upper half of the clamping block (320) match the size and structure of the right end of the upper mold cavity (210), and the size and structure of the lower half of the clamping block (320) match the size and structure of the right end of the lower mold cavity (110).

6. A paper-plastic bottle forming mold as claimed in claim 5, characterized in that: A second threaded hole (321) is respectively provided on the upper side and the lower side of the right surface of the clamping block (320), and a second fixing hole (332) is respectively provided on the upper side and the lower side of the right surface of the mounting plate (330); The size and distribution position of the second fixing hole (332) match the size and distribution position of the second threaded hole (321).

7. A paper-plastic bottle forming mold as claimed in claim 1, characterized in that: The length of the air bag (310) in a normal state is smaller than the lengths of the lower mold cavity (110) and the upper mold cavity (210), and an air hole (322) is formed by penetrating the middle of the clamping block (320) to the left; The left end of the air hole (322) is in communication with the right end of the air bag (310), and the right end of the air bag (310) is in communication with the air pipe (340) through the air hole (322).

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