CN209955185U - Combined material type injection mold - Google Patents
Combined material type injection mold Download PDFInfo
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- CN209955185U CN209955185U CN201920485451.7U CN201920485451U CN209955185U CN 209955185 U CN209955185 U CN 209955185U CN 201920485451 U CN201920485451 U CN 201920485451U CN 209955185 U CN209955185 U CN 209955185U
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- beryllium copper
- notch
- main body
- injection mold
- mold
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Abstract
The utility model relates to a combined material formula injection mold sets up the breach that is greater than lifting surface area at the position of beryllium copper main part compound die atress, the steel mold insert that interference fit appearance matches in the breach, the surface and the former beryllium copper main part appearance of steel mold insert are unanimous. The injection mold main body still adopts beryllium copper, and the mold closing stress impact area is replaced by small area of other materials, so that the stress impact area is not easy to damage, and the service life of the mold is prolonged.
Description
Technical Field
The utility model relates to a combined material formula injection mold belongs to the injection mold field.
Background
Injection molded plastic products are widely used, especially in automotive interior and exterior trim, such as front bumpers, rear bumpers, instrument panels, interior door panels, and seat appearances, which are demanding and high quality products.
In the prior art, in order to ensure that the product appearance has no visible appearance defects such as sink marks, welding marks and the like, a large amount of beryllium copper materials are used to ensure the rapid heat conduction and the heat conduction stability of the die, and ensure that the product appearance has no defects. The beryllium copper material has excellent heat conduction capability, can ensure that the surface of a plastic product is not easy to have the phenomena of sink marks, sink pits and the like, but has insufficient toughness, is easy to break or crack teeth after being impacted for a long time, causes the damage of a mould and cannot be produced.
Disclosure of Invention
The to-be-solved technical problem of the utility model is to provide a combined material formula injection mold, this injection mold main part still adopts the beryllium copper, and other material small areas are selected for use to replace in mould compound die atress striking area, ensure that the atress is hit regional not fragile, improve the life of mould.
For solving the above problems, the specific technical scheme of the utility model is as follows: a notch larger than the stress area is arranged at the part of a beryllium copper main body subjected to die assembly stress, a steel insert matched with the notch in shape is in interference fit, and the outer surface of the steel insert is consistent with the shape of the original beryllium copper main body.
The notch transversely penetrates through the beryllium copper main body, a rectangular groove is formed in the top of the notch, a dovetail groove is formed in the bottom of the notch, and the steel insert is matched with the notch in shape and is in interference fit with the beryllium copper main body through the rectangular groove and the dovetail groove.
The main body structure of the combined material type injection mold is beryllium copper, so that the appearance stability of a product is ensured, and meanwhile, the small area of a stress-impacted area is provided with a steel insert, so that the stress-impacted area is not easy to damage.
The steel insert is connected with the beryllium copper main body through the through notch, so that the steel insert is convenient to process on one hand, is convenient to position on the other hand, and ensures the interference fit of the steel insert and the beryllium copper main body.
Drawings
FIG. 1 is a schematic structural diagram of an original injection mold.
Fig. 2 is a schematic view of the cooperation of a beryllium copper body and a steel insert.
Fig. 3 is a schematic view of a steel insert assembled into a beryllium copper body.
The structure comprises a beryllium copper main body 1, a notch 2, a steel insert 3, a die assembly collision-prone part 4, a rectangular groove 21 and a dovetail groove 22.
Detailed Description
Beryllium copper is an alloy with good comprehensive mechanical, physical and chemical properties, has high strength, elasticity, wear resistance, fatigue resistance and heat resistance after quenching and tempering, has high electrical conductivity, thermal conductivity, cold resistance and no magnetism, has no spark when colliding, is easy to weld and braze, and has excellent corrosion resistance in atmosphere, fresh water and seawater. As shown in fig. 1, the mold clamping collision-prone portion 4 is likely to deform after a long time operation, which affects the appearance of the product.
As shown in fig. 2 and 3, the main body material of the combined material type injection mold is beryllium copper, a notch 2 larger than a stress area is arranged at a mold closing stress position of a beryllium copper main body 1, a steel insert 3 with a matched shape is in interference fit in the notch 2, and the outer surface of the steel insert 3 is consistent with the shape of the original beryllium copper main body.
The steel insert 3 of the application adopts SKD61 steel, SKD61 is most widely applied to die materials for aluminum and zinc die casting, and the high-temperature-resistant high-grade alloy steel containing tungsten is suitable for hot work, aluminum, magnesium, zinc and copper alloy die casting dies, slotting tools, scissors and hot forging actions, plastic section dies, hot working reamers, rolling tools, general hot working forging dies, hot bolt dies, various hot-room tools and the like.
The notch 2 transversely penetrates through the beryllium copper main body 1, the top of the notch 2 is provided with a rectangular groove 21, the bottom of the notch 2 is provided with a dovetail groove 22, and the steel insert 3 is matched with the notch 2 in shape and is in interference fit with the beryllium copper main body 1 through the rectangular groove 21 and the dovetail groove 22.
To sum up, the structure of this application has following advantage:
1. after the beryllium copper and the steel are combined and applied, the new injection molding product has no sink mark or sink, and meanwhile, the mold is produced in a long-term mold closing mode, the damage or tooth breakage phenomenon of a mold closing collision area does not occur on the mold, and meanwhile, the reject ratio of an injection molding piece and the maintenance of a production stopping mold caused by the damage of the mold are reduced, so that the resource waste is effectively reduced for a company;
2. the structure of the application not only does not need to frequently spend expensive price maintenance or make beryllium copper insert of mould from new, but also can be effectual extension, the life of whole mould.
Claims (2)
1. The utility model provides a combined material formula injection mold which characterized in that: a notch (2) larger than the stress area is arranged at the die assembly stress part of the beryllium copper main body (1), a steel insert (3) with the matched shape is in interference fit in the notch (2), and the outer surface of the steel insert (3) is consistent with the shape of the original beryllium copper main body.
2. The composite material injection mold according to claim 1, wherein: the novel steel insert is characterized in that the notch (2) transversely penetrates through the beryllium copper main body (1), a rectangular groove (21) is formed in the top of the notch (2), a dovetail groove (22) is formed in the bottom of the notch (2), the appearance of the steel insert (3) is matched with the notch (2), and the steel insert is in interference fit with the beryllium copper main body (1) through the rectangular groove (21) and the dovetail groove (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920485451.7U CN209955185U (en) | 2019-04-11 | 2019-04-11 | Combined material type injection mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920485451.7U CN209955185U (en) | 2019-04-11 | 2019-04-11 | Combined material type injection mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209955185U true CN209955185U (en) | 2020-01-17 |
Family
ID=69242655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920485451.7U Active CN209955185U (en) | 2019-04-11 | 2019-04-11 | Combined material type injection mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209955185U (en) |
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2019
- 2019-04-11 CN CN201920485451.7U patent/CN209955185U/en active Active
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