Quick exhaust cavity structure of thermal forming die
By setting an annular insert at the corner of the cavity of the thermoforming mold to form an annular gas tank, the problem of poor exhaust in the prior art is solved, and the effect of rapid exhaust and easier molding is achieved, while simplifying the mold Processing and repairing the inner wall of the cavity.
Patent Information
- Application Number
- CN202323488613.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-20
- Publication Date
- 2025-02-07
- Estimated Expiration
- 2033-12-20
AI Technical Summary
The existing thermoforming molds have poor exhaust gas at the corners of the mold cavity, resulting in incomplete plastic molding and inconvenient processing and maintenance of the inner wall of the mold cavity.
A thermoforming mold with a split structure is adopted, and annular inserts are arranged at the corners of the cavity to form an annular gas tank to achieve rapid and uniform exhaust.
It achieves rapid exhaust, improves the integrity of plastic molding, and simplifies the processing and maintenance of the inner wall of the mold cavity.
Smart Images
Figure CN222431586U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a hot forming mold technology, in particular to a hot forming mold quick exhaust cavity structure. Background Art
[0002] In the blister industry, plastic sheets are heated and then assisted by pressure or vacuum forming. The molding process has very high requirements for exhaust. The existing structure has several exhaust holes circumferentially arranged at the corners of the mold cavity. However, there are still many corners that are prone to incomplete molding during product molding. In addition, for thermoforming molds for containers such as plastic cups, in order to prevent the upper and lower empty cups from sticking together when stacked, reverse drawing sections are usually arranged around the bottom of the mold cavity. The corners and reverse drawing sections in the mold cavity make it difficult to process and modify the inner wall of the mold cavity. Utility Model Content
[0003] The purpose of the utility model is to provide a hot forming mold fast exhaust cavity structure, the cavity adopts a split structure, the cavity corners are set at the intersection of the split parts, and an annular exhaust groove is formed at the intersection. The utility model can achieve fast and uniform hole arrangement, the product is easy to form in place, and it is easy to process and maintain.
[0004] To achieve the above purpose, the following technical solutions are adopted:
[0005] A quick exhaust cavity structure of a hot forming mold includes a cavity body, characterized in that: a base is arranged at the bottom of the cavity body, an annular connecting groove is opened at the outer edge of the bottom of the cavity body, the top of the base has a convex ring, the base is connected to the annular connecting groove through the convex ring to achieve fixed connection with the cavity body, an annular groove is opened at the inner edge of the top of the base, an annular insert is arranged in the annular groove, a first annular air groove is formed between the top surface of the annular insert and the bottom surface of the cavity, a plurality of protrusions are arranged at the bottom of the annular insert, the protrusions lift the annular insert so that a second annular air groove is formed between the bottom surface of the annular insert and the bottom surface of the annular groove, and the annular insert isolates the first annular air groove from the second annular air groove; a plurality of circumferentially distributed upper exhaust holes and lower exhaust holes are respectively opened at positions corresponding to the first annular air groove and the second annular air groove on the side wall of the base.
[0006] A second annular groove is provided at the lower edge of the outer wall of the annular insert. The second annular groove, the inner wall of the annular groove and the top surface of the annular insert form an annular air chamber, which is connected to the second annular air groove and the lower exhaust hole.
[0007] The inner diameter of the annular insert gradually increases from top to bottom.
[0008] The utility model adopts a split structure cavity structure, and an annular insert is arranged between the split base and the cavity body. The upper and lower parts of the annular insert are just at the two corners of the cavity shape, and annular air grooves are arranged on the upper and lower parts of the annular insert. The annular air groove has the characteristics of fast exhaust speed and uniform exhaust compared with the original annular distribution exhaust holes, and can realize rapid exhaust, so that the sheet is easier to form. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] Figure 1 It is a schematic diagram of the structure of the utility model;
[0010] Figure 2 This is a schematic diagram of the exploded structure of the utility model (I);
[0011] Figure 3 This is a schematic diagram of the exploded structure of the utility model (II);
[0012] Figure 4 For this utility model Figure 1 Middle AA section view.
[0013] Figure 5 For this utility model Figure 4 Enlarged view of part B. DETAILED DESCRIPTION
[0014] like Figure 1-5 As shown, a quick exhaust cavity structure of a hot forming mold includes a cavity body 1, a base 2 is arranged at the bottom of the cavity body 1, an annular connecting groove 11 is opened at the outer edge of the bottom of the cavity body 1, the top of the base 2 has a convex ring 21, the base 2 is sleeved on the annular connecting groove 11 through the convex ring 21 to achieve fixed connection with the cavity body 1, an annular groove 22 is opened at the inner edge of the top of the base 2, an annular insert 3 is arranged in the annular groove 22, a first annular gas groove 31 is formed between the top surface of the annular insert 3 and the bottom surface of the cavity, a plurality of protrusions 33 are arranged at the bottom of the annular insert 3, and the protrusions 33 connect the annular insert 3 The lifting forms a second annular air groove 32 between the bottom surface of the annular insert 3 and the bottom surface of the annular groove 22, and the annular insert 3 isolates the first annular air groove 31 from the second annular air groove 32; a plurality of circumferentially distributed upper exhaust holes 35 and lower exhaust holes 36 are respectively opened at positions corresponding to the first annular air groove 31 and the second annular air groove 32 on the side wall of the base 2; a second annular groove is opened at the lower edge of the outer wall of the annular insert 3, and the second annular groove, the inner wall of the annular groove 22 and the top surface of the annular insert 3 form an annular air chamber 37, and the annular air chamber 37 is connected to the second annular air groove 32 and the lower exhaust holes 36.
[0015] The inner diameter of the annular insert 3 increases gradually from top to bottom.
[0016] The utility model arranges an annular insert between the split base and the cavity body, and the upper and lower parts of the annular insert are just located at two corners of the cavity shape. The split structure leaves a gap between the upper and lower parts, so that the first annular air groove and the second annular air groove are conveniently formed on the upper and lower sides of the annular insert. The annular air groove has the characteristics of fast exhaust speed and uniform exhaust compared with the original annular distributed exhaust holes; rapid exhaust can be achieved, so that the sheet material is easier to form.
[0017] In addition, the inner diameter of the annular insert gradually increases from top to bottom, corresponding to the reverse drawing section of the container side wall, and the split structure of the cavity makes the inner wall of the cavity easier to process and modify.
Claims
1. A thermoforming mold rapid exhaust cavity structure, comprising a cavity body (1), characterized in that: A base (2) is provided at the bottom of the cavity body (1); an annular connecting groove (11) is provided at the outer edge of the bottom of the cavity body (1); a convex ring (21) is provided at the top of the base (2); the base (2) is sleeved on the annular connecting groove (11) through the convex ring (21) to achieve fixed connection with the cavity body (1); an annular groove (22) is provided at the inner edge of the top of the base (2); an annular insert (3) is provided in the annular groove (22); a first annular air groove is formed between the top surface of the annular insert (3) and the bottom surface of the cavity A plurality of protrusions (33) are provided at the bottom of the annular insert (3), the protrusions (33) lift the annular insert (3) so that a second annular air groove (32) is formed between the bottom surface of the annular insert (3) and the bottom surface of the annular groove (22), and the annular insert (3) isolates the first annular air groove (31) and the second annular air groove (32); and a plurality of upper exhaust holes (35) and lower exhaust holes (36) distributed in the circumferential direction are respectively opened at positions on the side wall of the base (2) corresponding to the first annular air groove (31) and the second annular air groove (32).
2. A thermoforming mold rapid exhaust cavity structure as claimed in claim 1, characterized in that: A second annular groove is provided at the lower edge of the outer wall of the annular insert (3). The second annular groove, the inner wall of the annular groove (22) and the top surface of the annular insert (3) form an annular air chamber (37). The annular air chamber (37) is connected to the second annular air groove (32) and the lower exhaust hole (36).
3. A thermoforming mold rapid exhaust cavity structure as claimed in claim 1 or 2, characterized in that: The inner diameter of the annular insert (3) gradually increases from top to bottom.