CN221392138U - Multimode cavity upper die structure of moulding plastics - Google Patents
Multimode cavity upper die structure of moulding plastics Download PDFInfo
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- CN221392138U CN221392138U CN202323298566.0U CN202323298566U CN221392138U CN 221392138 U CN221392138 U CN 221392138U CN 202323298566 U CN202323298566 U CN 202323298566U CN 221392138 U CN221392138 U CN 221392138U
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- upper die
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- heat
- heat conduction
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- 238000000465 moulding Methods 0.000 title claims description 9
- 229920003023 plastic Polymers 0.000 title claims description 8
- 239000004033 plastic Substances 0.000 title claims description 8
- 238000001746 injection moulding Methods 0.000 claims abstract description 29
- 230000017525 heat dissipation Effects 0.000 claims abstract description 22
- 238000002347 injection Methods 0.000 claims abstract description 16
- 239000007924 injection Substances 0.000 claims abstract description 16
- 239000000463 material Substances 0.000 claims abstract description 16
- 238000007493 shaping process Methods 0.000 claims description 9
- 229910001369 Brass Inorganic materials 0.000 claims description 4
- 239000010951 brass Substances 0.000 claims description 4
- 230000005855 radiation Effects 0.000 claims description 4
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 abstract description 2
- 238000001816 cooling Methods 0.000 description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The utility model provides a multi-cavity injection upper die structure, and belongs to the field of injection dies. It has solved the problem that current mould cost is high. The multi-cavity injection molding upper die structure comprises an upper die body, wherein a vertically penetrating material hole is formed in the upper die body, four square forming cavities and flow passages enabling the material hole to be communicated with the four forming cavities are formed in the bottom wall of the upper die body, and a heat dissipation structure is arranged outside each forming cavity; the heat dissipation structure comprises two straight grooves formed in the bottom wall of the upper die body, and the two straight grooves in the same heat dissipation structure are distributed along the circumferential direction of the corresponding forming cavity; the axes of the straight groove and the forming cavity are vertically arranged, one end of the straight groove is closed and is arranged close to the corresponding forming cavity, and the other end of the straight groove is open and extends to the outer side face of the upper die body; and a heat conduction column is fixed in each straight groove, the axes of the heat conduction column and the corresponding straight grooves are arranged in parallel, the outer end of the heat conduction column extends out of the straight groove, and the heat conduction column has heat conductivity greater than that of the upper die body. The multi-cavity injection upper die has low structure cost.
Description
Technical Field
The utility model belongs to the field of injection molds, and relates to an injection upper mold, in particular to a multi-cavity injection upper mold structure.
Background
An injection mold is a mold for injection molding, and is generally composed of a movable mold and a fixed mold. In the injection molding process, an injection mold melts and injects a plastic material into a mold cavity, and a product with a desired shape and size is obtained after cooling and solidification.
The multi-cavity injection mold is one kind of injection mold, is used for once only shaping a plurality of products, and its structure is a multi-cavity injection mold as disclosed in chinese patent library (application number: 201811552423.9) comprises a lower die holder, a pressure maintaining device and an ejection mechanism movably arranged in the lower die holder, a cooling seat fixedly arranged at the bottom of the lower die holder, a cooling loop fixedly arranged in the cooling seat and an upper die holder movably arranged at the top of the lower die holder, wherein the upper surface of the lower die holder is fixedly connected with guide posts, four concave die cavities are arranged on the upper surface of the lower die holder, an injection molding runner is arranged on the upper surface of the lower die holder, the lower surface of the lower die holder is fixedly connected with a connecting seat, the injection molding runner comprises an H-shaped runner, a main runner communicated with a cross runner of the H-shaped runner in a radial direction, a pressure maintaining cavity communicated with the main runner, an injection molding runner communicated with the pressure maintaining cavity, longitudinal runners of the H-shaped runner are respectively communicated with the four concave die cavities, the injection molding pouring gate extends to the outer side of the concave die cavity, the pressure maintaining device comprises a pressurizing part and an adjusting seat fixedly connected to the bottom of the pressurizing part, the bottom of the pressurizing part is fixedly communicated with a pressurizing pipe, one side, close to the concave die cavity, of the pressurizing part is provided with a pressurizing port, the pressurizing pipe penetrates through and extends to the bottom of the lower die holder, the inside of the cooling seat is provided with a mounting cavity, the inner side wall of the mounting cavity is fixedly connected with the connecting seat, the cooling circuit comprises a cooling pipeline, a water inlet joint fixedly communicated with one end of the cooling pipeline and a water outlet joint fixedly communicated with the other end of the cooling pipeline, the cooling pipeline is coiled in the mounting cavity, the water inlet joint and the water outlet joint respectively penetrate through and extend to the outer side of the cooling seat, the upper die holder is sleeved with the guide post, the lower surface fixedly connected with of upper die base and terrace die, ejection mechanism includes the trigger lever, fixedly cup joints in the ejecting portion and the slider of fixed connection in ejection mechanism one end of trigger lever surface, the ejector slot has been seted up to the inside of die holder, the fixed intercommunication in top of ejector slot has the spacing groove that is linked together with the pressurize chamber way, the fixed intercommunication in bottom of ejector slot has the spout, slider and spout sliding connection, ejecting portion and ejection groove sliding connection, booster portion and pressurize chamber way sliding connection, the regulating seat runs through the spacing groove and extends to the inside of ejector slot.
The plastic mold is required to be provided with a set of liquid cooling loop for injection molding and cooling, and the overall cost is high.
Disclosure of utility model
The utility model aims to solve the problems in the prior art and provides a multi-cavity injection upper die structure with low cost.
The aim of the utility model can be achieved by the following technical scheme: the utility model provides a multimode cavity upper die structure of moulding plastics, includes the upper die body, and the upper die body internal shaping has the material hole that is vertical run through and sets up, has offered four shaping die cavities that are square arrangement and the runner that makes the material hole communicate four shaping die cavities on the upper die body diapire, and its characterized in that, the outside of every shaping die cavity all is equipped with heat radiation structure; the heat dissipation structure comprises two straight grooves formed in the bottom wall of the upper die body, and the two straight grooves in the same heat dissipation structure are distributed along the circumferential direction of the corresponding forming cavity; the axes of the straight groove and the forming cavity are vertically arranged, one end of the straight groove is closed and is arranged close to the corresponding forming cavity, and the other end of the straight groove is open and extends to the outer side face of the upper die body; and a heat conduction column is fixed in each straight groove, the axes of the heat conduction column and the corresponding straight grooves are arranged in parallel, the outer end of the heat conduction column extends out of the straight groove, and the heat conductivity of the heat conduction column is greater than that of the upper die body.
The die disclosed by the application is suitable for multi-cavity injection molding of small plastic parts.
Through arranging two straight slots in the peripheral circumference of the forming cavity, one end of the straight slot is opened, the other end of the straight slot is close to the forming cavity, and the heat conduction column is horizontally fixed in the straight slot, so that the internal heat dissipation of the forming cavity can be effectively quickened, the cooling of an injection molding piece is quickened, and the whole heat dissipation is realized only by slotting on the bottom wall of the upper die body and loading the heat conduction column, so that the cost is low, and the processing is more convenient.
In the multi-cavity injection molding upper die structure, the bottom wall of each straight groove is provided with the strip-shaped groove with the shape and the size matched with the heat conduction column, the two ends of the strip-shaped groove are respectively a closed end and an open end, the heat conduction column is clamped in the corresponding strip-shaped groove, namely, the heat conduction column is installed without other parts, and the cost can be further reduced.
In the multi-cavity injection molding upper die structure, the inner end face of the heat conduction column is pressed on the end face corresponding to the closed end of the strip-shaped groove, so that the installation limiting effect is achieved, the heat conduction column is installed in place at one time, and the assembly is convenient.
In the multi-cavity injection molding upper die structure, the bottom surfaces of the heat conducting columns and the strip-shaped grooves are flat and are flush, so that air flow is enabled to flow in the strip-shaped grooves stably and be in better and more contact with the heat conducting columns, and the heat dissipation effect and efficiency are improved.
In the multi-cavity injection molding upper die structure, the cross section of the strip-shaped groove is arc-shaped, so that the processing is facilitated.
In the multi-cavity injection molding upper die structure, blind holes are vertically formed in the bottom wall of the upper die body at positions between each strip-shaped groove and the corresponding molding cavity, the length of each blind hole is larger than the depth of each strip-shaped groove, and the blind holes are not communicated with the strip-shaped grooves so as to further accelerate the heat dissipation speed inside the molding cavity.
In the multi-cavity injection molding upper die structure, two straight grooves in the same heat dissipation structure are distributed in an L shape along the circumferential direction of the corresponding molding cavity.
In the multi-cavity injection upper mold structure described above, the thermally conductive posts are made of a brass material.
In the multi-cavity injection molding upper mold structure, the heat conducting column is made of an aluminum alloy material.
Compared with the prior art, the multi-cavity injection molding upper die structure has the following advantages:
1. Through arranging two straight slots in the peripheral circumference of the forming cavity, one end of the straight slot is opened, the other end of the straight slot is close to the forming cavity, and the heat conduction column is horizontally fixed in the straight slot, so that the internal heat dissipation of the forming cavity can be effectively quickened, the cooling of an injection molding piece is quickened, and the whole heat dissipation is realized only by slotting on the bottom wall of the upper die body and loading the heat conduction column, so that the cost is low, and the processing is more convenient.
2. The bottom surfaces of the heat conduction column and the strip-shaped groove are both planes and are flush, so that the air flow is enabled to flow in the strip-shaped groove stably and be in better and more contact with the heat conduction column, and the heat dissipation effect and efficiency are improved.
Drawings
FIG. 1 is a schematic perspective view of a multi-cavity injection molding upper mold structure.
Fig. 2 is a schematic perspective view of a multi-cavity injection molding upper mold structure in another direction.
Fig. 3 is a schematic view of the installation of the heat conductive post.
In the figure, 1, an upper die body; 1a, a material hole; 1b, a runner; 1c, a forming cavity; 1d, straight grooves; 1e, a strip-shaped groove; 1g, blind holes; 1h, a boss; 2. a heat conducting column; 3. and a guide post.
Detailed Description
The following are specific embodiments of the present utility model and the technical solutions of the present utility model will be further described with reference to the accompanying drawings, but the present utility model is not limited to these embodiments.
As shown in fig. 1 and 2, the multi-cavity injection molding upper die structure comprises an upper die body 1, wherein a material hole 1a vertically penetrating is formed in the upper die body 1, and the material hole 1a is positioned at the center of the upper die body 1.
In particular the number of the elements,
The bottom wall of the upper die body 1 is provided with a runner 1b and four forming cavities 1c, wherein the four forming cavities 1c are distributed in a square shape around the center of a material hole 1 a; the runner 1b is positioned in a space surrounded by the four forming cavities 1c, the runner 1b comprises an inlet and four outlets, the inlet is communicated with the material hole 1a, and the four outlets are respectively communicated with the four forming cavities 1c.
The outer side of each forming cavity 1c is provided with a heat dissipation structure, specifically, as shown in fig. 2 and 3, the heat dissipation structure comprises two straight grooves 1d arranged on the bottom wall of the upper die body 1, and the two straight grooves 1d in the same heat dissipation structure are distributed along the circumferential direction of the corresponding forming cavity 1c, preferably the two straight grooves 1d in the same heat dissipation structure are distributed in an L shape along the circumferential direction of the corresponding forming cavity 1 c. The axes of the straight groove 1d and the forming cavity 1c are vertically arranged, one end of the straight groove 1d is closed and is arranged close to the corresponding forming cavity 1c, and the other end of the straight groove 1d is open and extends to the outer side face of the upper die body 1. Each straight groove 1d is internally provided with a heat conduction column 2, the axes of the heat conduction columns 2 and the corresponding straight grooves 1d are arranged in parallel, the outer ends of the heat conduction columns 2 extend out of the straight grooves 1d, and the heat conductivity of the heat conduction columns 2 is greater than that of the upper die body 1.
When in actual use, the die disclosed by the application is suitable for multi-cavity injection molding of small plastic parts.
Through arranging two straight slots 1d in the peripheral circumference of the forming cavity 1c, one end of each straight slot 1d is opened, the other end is close to the forming cavity 1c, and the heat conducting column 2 is horizontally fixed in each straight slot 1d, so that the internal heat dissipation of the forming cavity 1c can be effectively quickened, the cooling of injection molding pieces is quickened, and the whole heat dissipation is realized only by slotting on the bottom wall of the upper die body 1 and arranging the heat conducting column 2 in the lower die body, so that the cost is low, and the processing is more convenient.
In the present embodiment of the present invention, in the present embodiment,
The heat conductive pillars 2 are made of a brass material or an aluminum alloy material, and it is preferable that the heat conductive pillars 2 are made of a brass material.
The heat conduction column 2 is installed as follows: the bottom wall of each straight groove 1d is provided with a strip-shaped groove 1e with the shape and the size matched with the heat conduction column 2, two ends of the strip-shaped groove 1e are respectively a closed end and an open end, the heat conduction column 2 is clamped in the corresponding strip-shaped groove 1e, namely, the heat conduction column 2 is installed without other parts, so that the cost can be further reduced. Further, the inner end face of the heat conduction column 2 is pressed on the end face corresponding to the closed end of the strip-shaped groove 1e, so that the heat conduction column 2 is installed in place at one time, and the assembly is convenient.
As shown in fig. 3, the straight groove 1d has a U-shaped cross section; the cross section of the strip-shaped groove 1e is arc-shaped; the bottom surfaces of the heat conduction column 2 and the strip-shaped groove 1e are both planes and are flush, so that air flow is enabled to flow in the strip-shaped groove 1e stably and be in better and more contact with the heat conduction column 2, and the heat dissipation effect and efficiency are improved. The position of the bottom wall of the upper die body 1 between each strip-shaped groove 1e and the corresponding forming cavity 1c is vertically provided with a blind hole 1g, the length of the blind hole 1g is greater than the depth of the strip-shaped groove 1e, and the blind hole 1g is not communicated with the strip-shaped groove 1e so as to further accelerate the heat dissipation speed inside the forming cavity 1 c.
In an actual product, bosses 1h are formed around the bottom wall of the upper die body 1, and guide posts 3 are vertically fixed on each boss 1h and used for die closing and guiding.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the utility model or exceeding the scope of the utility model as defined in the accompanying claims.
Claims (9)
1. The utility model provides a multimode cavity upper mould structure of moulding plastics, includes upper mould body (1), and upper mould body (1) internal shaping has and is vertical through setting's material hole (1 a), has offered four shaping chambeies (1 c) that are square arrangement and has made material hole (1 a) intercommunication four runner (1 b) of shaping chamber (1 c) on upper mould body (1) diapire, and characterized in that, the outside of every shaping chamber (1 c) all is equipped with heat radiation structure; the heat radiation structure comprises two straight grooves (1 d) arranged on the bottom wall of the upper die body (1), and the two straight grooves (1 d) in the same heat radiation structure are distributed along the circumferential direction of the corresponding forming cavity (1 c); the axes of the straight groove (1 d) and the forming cavity (1 c) are vertically arranged, one end of the straight groove (1 d) is closed and is arranged close to the corresponding forming cavity (1 c), and the other end of the straight groove (1 d) is open and extends to the outer side face of the upper die body (1); all be fixed with heat conduction post (2) in every straight flute (1 d), heat conduction post (2) and the axis parallel arrangement of corresponding straight flute (1 d) both, and heat conduction post (2) outer end stretches out straight flute (1 d), and the heat conductivity of heat conduction post (2) is greater than the heat conductivity of last die body (1).
2. The multi-cavity injection molding upper mold structure according to claim 1, wherein each straight groove (1 d) is provided with a strip-shaped groove (1 e) with a shape and a size matched with the heat conducting column (2) on the bottom wall, two ends of the strip-shaped groove (1 e) are respectively a closed end and an open end, and the heat conducting column (2) is clamped in the corresponding strip-shaped groove (1 e).
3. A multi-cavity injection molding upper mold structure according to claim 2, wherein the inner end face of the heat conduction post (2) is pressed against the end face corresponding to the closed end of the bar-shaped groove (1 e).
4. A multi-cavity injection upper mold structure according to claim 2 or 3, characterized in that the bottom surfaces of the heat conducting post (2) and the bar-shaped groove (1 e) are both plane and arranged flush.
5. A multi-cavity injection upper mold structure according to claim 2 or 3, characterized in that the cross section of the bar-shaped groove (1 e) is circular arc-shaped.
6. The multi-cavity injection molding upper mold structure according to claim 1, wherein blind holes (1 g) are vertically formed in the bottom wall of the upper mold body (1) at positions between each strip-shaped groove (1 e) and the corresponding molding cavity (1 c), the length of each blind hole (1 g) is greater than the depth of each strip-shaped groove (1 e), and the blind holes (1 g) are not communicated with the strip-shaped grooves (1 e).
7. The multi-cavity injection upper mold structure according to claim 1, wherein two straight grooves (1 d) in the same heat dissipation structure are distributed in an L shape along the circumferential direction of the corresponding molding cavity (1 c).
8. A multi-cavity injection molding upper mold structure according to claim 1, characterized in that the heat conducting post (2) is made of brass material.
9. A multi-cavity injection molding upper mold structure according to claim 1, characterized in that the heat conducting pillars (2) are made of an aluminum alloy material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323298566.0U CN221392138U (en) | 2023-12-05 | 2023-12-05 | Multimode cavity upper die structure of moulding plastics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323298566.0U CN221392138U (en) | 2023-12-05 | 2023-12-05 | Multimode cavity upper die structure of moulding plastics |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221392138U true CN221392138U (en) | 2024-07-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323298566.0U Active CN221392138U (en) | 2023-12-05 | 2023-12-05 | Multimode cavity upper die structure of moulding plastics |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221392138U (en) |
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2023
- 2023-12-05 CN CN202323298566.0U patent/CN221392138U/en active Active
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