Pneumatic demolding structure for injection molding
By introducing a pneumatic demolding structure into the injection mold, the product is separated from the punch by the gas expansion force, which solves the problems of damage and low efficiency of traditional demolding methods to TPU protective sleeves and achieves a safe and efficient demolding process.
Patent Information
- Application Number
- CN202423276926.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2034-12-30
AI Technical Summary
Traditional injection molds use mechanical ejection or pulling methods to remove the TPU protective sleeve during demolding, which can damage product quality, is inefficient, and poses operational safety hazards.
The system employs a pneumatic demolding structure, injecting gas into the cavity through an air blowing pipe. The gas expansion force is used to separate the product body from the punch, achieving non-contact demolding.
It improves demolding efficiency, avoids damage to the product, and reduces safety risks for operators.
Smart Images
Figure CN223590014U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to injection mold technical field, concretely is a kind of injection pneumatic demolding structure. BACKGROUND
[0002] In injection molding process, the design of demolding structure directly influences the production efficiency, quality and service life of product and mould;Traditional injection mould demolding mode is mostly adopted mechanical ejection or pull-out structure, these structures can meet production demand to some extent, but when facing TPU protective cover, since the surface of protective cover is soft, ejection and pull-out will affect the quality of product, and the traditional way is to remove protective cover by artificial, and removing protective cover in the middle of mould not only is inefficient, but also causes security risk to operator's hand.
[0003] Therefore, it is particularly important to develop an injection pneumatic demolding structure which is efficient, stable and causes little damage to product. CONTENT OF UTILITY MODEL
[0004] In view of the deficiencies of prior art, the utility model provides an injection pneumatic demolding structure, which solves the problems raised in the above background art.
[0005] To achieve the above purpose, the utility model is implemented by the following technical solutions: an injection pneumatic demolding structure, comprising upper fixed plate and lower fixed plate, the outer side end of the upper fixed plate is provided with a spout, the side end of the upper fixed plate is connected with upper mould, the side end of the lower fixed plate is connected with top plate, the outer side end of the top plate is provided with lower mould, the side end of the lower mould is provided with sliding block, the four sliding blocks form cavity, the side end of the upper mould is provided with male die, the product body is formed by injection between the male die and cavity, the pneumatic mechanism is arranged between the top plate and lower fixed plate, the pneumatic mechanism comprises air blowing pipe, the end of the air blowing pipe is in communication with cavity, the other end of the air blowing pipe extends to the outer side of lower fixed plate and is connected with external air compressor.
[0006] Further, the pneumatic mechanism further comprises guide column, one end of the guide column is fixed on the top plate, the end face of the male die is provided with guide groove, the guide column and the guide groove are matched and arranged, and slide on the lower mould, the air blowing pipe is slidingly arranged on the lower mould, and the end of the air blowing pipe extends to the position between the cavity and male die through the product body.
[0007] Further, the air blowing pipe is arranged at one corner of the four corners of the product body.
[0008] Further, the air blowing pipe is symmetrically arranged on both sides of the guide column.
[0009] Further, the product body and the male die are arranged in a sleeved manner.
[0010] Further, the end of the guide column is provided with a vertebra.
[0011] With respect to the above background art, the present application provides a kind of injection molding pneumatic demolding structure;Including technology in now very mature injection mold, and pneumatic mechanism as the core component, its principle relies on through blowing tube corresponding product body one corner blowing, to achieve the effect of product body from the effect of male die, it is convenient for operator to take down material, avoid operator to occur accident danger.
[0012] The utility model provides a kind of injection molding pneumatic demolding structure. Compared with prior art has the following beneficial effects:
[0013] The injection molding pneumatic demolding structure;By setting up blowing mechanism, product body is injected into cavity by blowing tube at the moment of mold opening, the power of separation by the expansion of gas, one corner of product body is blown from male die, to facilitate operator to take down material directly, not only improve the efficiency of down material, and avoid operator to occur accident danger. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 It is the overall structure schematic diagram of the utility model;
[0015] Figure 2 It is the structure schematic diagram of the mold opening of upper die and lower die of the utility model;
[0016] Figure 3 It is the structure schematic diagram of upper fixed plate and lower fixed plate of the utility model;
[0017] Figure 4 It is Figure 2 It is the structure schematic diagram of enlarged structure in A place;
[0018] Figure 5 It is Figure 3 It is the structure schematic diagram of enlarged structure in B place.
[0019] In the figure: 1, upper fixed plate;2, upper die;3, lower die;4, top plate;5, lower fixed plate;6, nipple;7, product body;8, slider;9, cavity;10, blowing tube;11, male die;12, guide groove;13, guide column. DETAILED DESCRIPTION
[0020] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.
[0021] Please refer to Figures 1-5 The utility model provides a technical scheme: a kind of injection molding pneumatic demolding structure, including upper fixed plate 1 and lower fixed plate 5, the outer side end of upper fixed plate 1 is provided with nipple 6, the side end of upper fixed plate 1 is connected with upper die 2, the side end of lower fixed plate 5 is connected with top plate 4, the outer side end of top plate 4 is provided with lower die 3, the side end of lower die 3 is provided with sliding block 8, forming cavity 9 is formed between four sliding blocks 8, the side end of upper die 2 is provided with male die 11, product body 7 is formed by injection between male die 11 and forming cavity 9, pneumatic mechanism is arranged between top plate 4 and lower fixed plate 5, and pneumatic mechanism includes blowing pipe 10, the end of blowing pipe 10 is communicated with forming cavity 9, and the other end of blowing pipe 10 extends to the outside of lower fixed plate 5 and is connected with external air compressor;Upper fixed plate 1, lower fixed plate 5, upper die 2 and lower die 3 are prior art known technology, and they are all commonly used components in injection mold, and will not be introduced too much, wherein top plate 4 is arranged between lower fixed plate 5 and lower die 3, four sliding blocks 8 on the side end of lower die 3 are moved to periphery by the drive of top plate 4, and then forming cavity 9 is released, so that product body 7 in the middle is released, and product body 7 is sleeved on male die 11, at this time, the position of male die 11 is blown by blowing pipe 10 of pneumatic mechanism, and then product body 7 is blown and separated from male die 11 by the reverse blowing of gas, so that operating personnel can quickly take down product body 7 from male die 11, which not only can improve the efficiency of discharging, but also can avoid that the hand of operating personnel stays in mold for too long time, to avoid danger.
[0022] As Figure 4 Shown, pneumatic mechanism further includes guide pillar 13, one end of guide pillar 13 is fixed on top plate 4, end face of male die 11 is provided with guide slot 12, guide pillar 13 and guide slot 12 are matched and arranged, and slidingly arranged in lower die 3, blowing pipe 10 is slidingly arranged in lower die 3, and the end of blowing pipe 10 extends to the position between forming cavity 9 and male die 11 and is arranged through product body 7;Guide pillar 13 of pneumatic mechanism and guide slot 12 on male die 11 are matched, so that the position corresponding to blowing pipe 10 can be supported and opened by the movement of top plate 4, to improve the blowing efficiency of blowing pipe 10.
[0023] As Figure 4 And Figure 5As shown, the blowing pipe 10 is arranged at one corner of the four corners of the product body 7, the blowing pipe 10 is symmetrically arranged on both sides of the guide column 13, the product body 7 is sleeved with the male die 11, and the end of the guide column 13 is provided with a cone; for the product body 7 in the figure, one corner of the four corners can be blown up in advance to pre-separate the male die 11, thereby facilitating the operator to take down the material; and the blowing force and the blowing area can be improved through the two-side symmetric blowing pipe 10, thereby more conveniently blowing up one corner of the product body 7; although the product body 7 needs to be separated from the male die 11, when the blowing pipe 10 blows one corner, the whole product body 7 can be avoided from falling due to the sleeved arrangement, thereby affecting the production of the product body 7; the end of the guide column 13 is provided with a cone, which can conveniently plug in when the mold is closed.
Claims
1. An injection moulding pneumatic demoulding structure comprising an upper fixed plate (1) and a lower fixed plate (5), characterised in that, The outer side end of the upper fixed plate (1) is provided with a spout (6), the side end of the upper fixed plate (1) is connected with an upper mold (2), the side end of the lower fixed plate (5) is connected with a top plate (4), the outer side end of the top plate (4) is provided with a lower mold (3), the side end of the lower mold (3) is provided with a sliding block (8), the four sliding blocks (8) form a cavity (9) between them, the side end of the upper mold (2) is provided with a convex mold (11), the convex mold (11) and the cavity (9) are injection molded to form a product body (7), a pneumatic mechanism is arranged between the top plate (4) and the lower fixed plate (5), the pneumatic mechanism comprises a blowing pipe (10), one end of the blowing pipe (10) is in communication with the cavity (9), and the other end of the blowing pipe (10) extends to the outside of the lower fixed plate (5) and is connected with an external air compressor.
2. A gas assisted demolding structure according to claim 1, wherein The pneumatic mechanism further comprises a guide column (13), one end of the guide column (13) is fixed to the top plate (4), an end face of the convex mold (11) is provided with a guide groove (12), the guide column (13) and the guide groove (12) are matched and arranged, and the guide column (13) slides on the lower mold (3), the blowing pipe (10) and the lower mold (3) are arranged in sliding mode, and the end of the blowing pipe (10) extends to the position between the cavity (9) and the convex mold (11) through the product body (7).
3. A gas-assisted injection molded article according to claim 2, wherein The blowing pipe (10) is arranged at one corner of the four corners of the product body (7).
4. A gas assisted demolding structure according to claim 2, wherein The blowing pipe (10) is symmetrically arranged on both sides of the guide column (13).
5. A gas assisted demolding structure according to claim 2, wherein The product body (7) and the convex mold (11) are arranged in a sleeved mode.
6. A gas assisted demolding structure according to claim 4, wherein The end of the guide column (13) is provided with a vertebral body.