CN221021936U - Forming die of sealing element - Google Patents
Forming die of sealing element Download PDFInfo
- Publication number
- CN221021936U CN221021936U CN202322694864.5U CN202322694864U CN221021936U CN 221021936 U CN221021936 U CN 221021936U CN 202322694864 U CN202322694864 U CN 202322694864U CN 221021936 U CN221021936 U CN 221021936U
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- Prior art keywords
- tearing
- groove
- sealing
- sealing element
- die plate
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- 238000007789 sealing Methods 0.000 title claims abstract description 43
- 239000000463 material Substances 0.000 claims abstract description 15
- 238000000465 moulding Methods 0.000 claims abstract description 9
- 238000004513 sizing Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 5
- 230000007704 transition Effects 0.000 abstract description 3
- 210000002421 cell wall Anatomy 0.000 abstract 1
- 230000002349 favourable effect Effects 0.000 abstract 1
- 238000005452 bending Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The utility model discloses a molding die for a sealing element, relates to the field of dies for sealing elements, and solves the problem that a sealing element is easy to tear during demolding. The rubber material forming die comprises an upper die plate and a lower die plate, wherein cavities for placing rubber materials are formed in the opposite side walls of the upper die plate and the lower die plate, and edge tearing grooves are respectively formed in the two sides of the cavities, and the cross section of each edge tearing groove is U-shaped or circular arc-shaped. The cross section shape of tearing limit groove is U-shaped or convex by blunt mouth or angular form shape design, and cell wall circular arc curved transition is more favorable to the drawing of patterns, has protected the sealing member main part, is difficult to draw the mould and draws limit tearing, conveniently takes off the sealing member, and the drawing of patterns effect is better, also does benefit to the mould life extension, greatly reduced the loss of cost, is particularly useful for the sealing rubber of high-end material, and the finished product success rate is higher, and the loss is littleer.
Description
Technical Field
The utility model relates to the field of dies for sealing elements, in particular to a forming die for a sealing element.
Background
The sealing element is used as one of important sealing structure products and is widely applied to various devices and products. The dimensional accuracy of the seal is an important condition for ensuring reliable sealing, and the structure and accuracy of the seal mold determine the dimensional accuracy of the seal, so the design importance of the mold is self-evident. In practical application of the mold, the compression and stretching amounts of the sealing element are ensured by the size of the sealing groove in the mold, so that the sealing performance and the service life of the sealing element are greatly influenced by the groove design and the selection, and the groove design is the main content of the sealing element sealing design.
After the traditional sealing element forming die is matched, glue materials are easy to overflow from a cavity to form flash after being melted, the sealing element is taken down after being formed, and then the flash is torn off, however, the sealing element is easy to tear and tear when the sealing element is demoulded due to the problem of the angular shape of the tearing edge groove or the fact that the distance between the cavity and the tearing edge groove is close, and especially the sealing element with large line diameter and large caliber is easy to tear, so that the product quality is reduced, and the cost loss is improved.
Disclosure of Invention
The purpose of the utility model is that: in order to overcome the defects of the prior art, the utility model provides a forming die for a sealing element, and solves the problem that the sealing element is easy to tear when being demoulded.
The technical scheme of the utility model is as follows: the rubber material forming die comprises an upper die plate and a lower die plate, wherein cavities for placing rubber materials are formed in the opposite side walls of the upper die plate and the lower die plate, and edge tearing grooves are respectively formed in the two sides of the cavities, and the cross section of each edge tearing groove is U-shaped or circular arc-shaped.
By adopting the technical scheme, the cross section shape of the tearing edge groove is designed to be U-shaped or arc-shaped by the blunt opening or the angular shape, the arc bending transition of the groove wall is more beneficial to demolding, the sealing element main body is protected, the tearing of the drawing edge is difficult to be started, the sealing element is convenient to take down, the demolding effect is better, the service life of the die is prolonged, the loss of the cost is greatly reduced, the sealing rubber is particularly suitable for sealing rubber of high-end materials, the success rate of finished products is higher, and the loss is smaller.
In one possible design, the minimum distance between the wall of the tear-off slot and the side wall of the cavity is 0.3 mm.
By adopting the design, the minimum distance is widened from 0.03 mm to 0.3mm, the width of the tearing edge is increased, the possibility of tearing the tearing edge is reduced, and the product quality is effectively improved.
In one possible design, the tear edge notches are located on opposite side walls of the upper and lower templates, respectively.
By adopting the design, the upper side and the lower side of the sealing piece are required to be provided with the tearing groove, the thickness of the tearing edge is thickened, and the protection effect is improved for the main body of the forming sealing piece.
In one possible design, the two sides of the tearing edge groove are respectively provided with a material overflow groove.
By adopting the design, the flash groove is reasonable in arrangement, can accept flash from the edge tearing groove, and ensures the sealing element main body and the compactness of the edge tearing groove in-forming.
In one possible design, the flash tank is located on the lower die plate.
By adopting the design, the flash tank is only required to be arranged at the lower die plate, so that the flash tank is enough to meet the requirement of flash, and the die is convenient to process.
In one possible design, the cross-sectional shape of the chute is a trapezoid with a large top and a small bottom.
By adopting the design, the fluidity of the sizing material is met, and the demolding is not influenced.
Drawings
FIG. 1 is a cross-sectional view of an embodiment of the present utility model;
FIG. 2 is an enlarged view of a portion of the utility model at A in FIG. 1;
FIG. 3 is an enlarged view of a portion of the utility model at B in FIG. 2;
wherein, 1, upper template; 2. a lower template; 3. a cavity; 4. tearing edge grooves; 5. a discharge chute;
Description of the embodiments
The molding die for the sealing element shown in the figures 1-3 comprises an upper die plate 1 and a lower die plate 2, wherein cavities 3 for placing sizing materials are arranged on opposite side walls of the upper die plate 1 and the lower die plate 2, the sizing materials are raw materials for molding the sealing element, the shape of the cavities 3 accords with the shape of the required molding sealing element, edge tearing grooves 4 are respectively arranged at two side positions of the cavities 3, and the cross section shape of the edge tearing grooves 4 is U-shaped or arc-shaped. Taking an O-shaped sealing ring in a molded sealing piece as an example, two sides of the cavity 3 are positioned at the inner side and the outer side of the annular cavity 3. Whether the edge tearing groove 4 is in a U shape or in an arc shape, the groove wall main body of the edge tearing groove 4 is in arc bending transition, the outer surface of the formed shape in the edge tearing groove 4 is in an arc curved surface shape, and the shape of edges or blunt edges is avoided, so that the edge tearing groove is difficult to tear when the mold is removed, the formed sealing element main body is well protected, and the product quality is improved.
The minimum distance L between the groove wall of the tearing groove 4 and the side wall of the cavity 3 is 0.3 millimeter (as marked by L in fig. 3), so that the width of the tearing edge is increased, the possibility of tearing edge and cracking is reduced, and the protection effect on the sealing element main body is better.
The tearing edge grooves 4 are respectively arranged on the opposite side walls of the upper template 1 and the lower template 2, and correspond to the shape of a circular ring which can be displayed by tearing edges, the thickness of the tearing edges is increased, and the protection effect is improved.
The overflow tanks 5 are respectively arranged at the two sides of the tearing edge tank 4, the overflow tanks 5 are only arranged on the lower template 2, the overflow tanks are not required to be arranged on the upper template 1, and the section shape of the overflow tanks 5 is a trapezoid shape with big top and small bottom. The shape and the position design of the overflow chute 5 are reasonable, and the overflow chute can receive overflow materials from the edge tearing chute 4, ensure the compactness of the sealing element main body and the inner molding of the edge tearing chute 4, and ensure that sizing materials can smoothly flow.
Claims (6)
1. The utility model provides a forming die of sealing member, including cope match-plate pattern (1) and lower bolster (2), all be equipped with on the opposite lateral wall of cope match-plate pattern (1) and lower bolster (2) and supply die cavity (3) that sizing material put into, its characterized in that: the two sides of the cavity (3) are respectively provided with a tearing edge groove (4), and the cross section of the tearing edge groove (4) is U-shaped or arc-shaped.
2. The molding die for a seal member according to claim 1, wherein: the minimum distance between the groove wall of the tearing edge groove (4) and the side wall of the cavity (3) is 0.3 mm.
3. The molding die for a seal member according to claim 2, wherein: the tearing edge grooves (4) are respectively positioned on the opposite side walls of the upper template (1) and the lower template (2).
4. A sealing member forming die according to claim 1 or 3, wherein: and the two sides of the tearing edge groove (4) are respectively provided with a material overflow groove (5).
5. The molding die for a seal member according to claim 4, wherein: the flash groove (5) is positioned on the lower die plate (2).
6. The molding die for a seal member according to claim 4, wherein: the cross section of the flash groove (5) is trapezoid with big top and small bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322694864.5U CN221021936U (en) | 2023-10-08 | 2023-10-08 | Forming die of sealing element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322694864.5U CN221021936U (en) | 2023-10-08 | 2023-10-08 | Forming die of sealing element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221021936U true CN221021936U (en) | 2024-05-28 |
Family
ID=91133842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322694864.5U Active CN221021936U (en) | 2023-10-08 | 2023-10-08 | Forming die of sealing element |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221021936U (en) |
-
2023
- 2023-10-08 CN CN202322694864.5U patent/CN221021936U/en active Active
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