CN220179973U - Soft backboard foaming mold - Google Patents
Soft backboard foaming mold Download PDFInfo
- Publication number
- CN220179973U CN220179973U CN202321980785.4U CN202321980785U CN220179973U CN 220179973 U CN220179973 U CN 220179973U CN 202321980785 U CN202321980785 U CN 202321980785U CN 220179973 U CN220179973 U CN 220179973U
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- CN
- China
- Prior art keywords
- insert
- pit
- pouring
- back plate
- upper die
- Prior art date
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- 238000005187 foaming Methods 0.000 title claims abstract description 13
- 230000007704 transition Effects 0.000 claims abstract description 4
- 238000005266 casting Methods 0.000 claims 2
- 239000010985 leather Substances 0.000 abstract description 10
- 239000000126 substance Substances 0.000 abstract 1
- 238000002844 melting Methods 0.000 description 11
- 230000008018 melting Effects 0.000 description 11
- 239000000463 material Substances 0.000 description 10
- 238000001816 cooling Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 238000004512 die casting Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The utility model discloses a soft back plate foaming mold, which comprises an upper mold and a lower mold, wherein an insert is embedded at a pouring opening of the upper mold, the insert protrudes out of the outer surface of the upper mold, the protruding height is 15-20 mm, the overall height of the insert is larger than the length of a pouring gun head, a pit is concavely arranged on the inner surface of the upper mold relative to the area around the pouring opening, the pit and the inner surface of the upper mold are in arc transition, and the depth of the pit is 2-3mm. According to the utility model, the insert is heightened, the distance between the lower edge of the gun head and the inner surface of the lower die is increased, so that the phenomenon that chemical residue hard blocks enter leather due to too close distance is avoided, and therefore, the leather surface of the soft back plate is provided with the pouring gate marks.
Description
Technical Field
The utility model relates to the technical field of mold manufacturing, in particular to a soft back plate foaming mold.
Background
The manufacturing method of the soft backboard comprises the following steps: leather or other material fabrics are paved on the bottom surface of the lower die cavity in advance, and then closed die casting is carried out, so that the chair back plate with soft touch feeling is integrally formed. The conventional soft back plate mold has the following characteristics: a. the pouring gate insert of the upper die 1 is flush with the upper surface of the die (as shown in fig. 1), the distance between the upper edge of the pouring gate insert and the lower die surface of the foaming die is 30mm, the length of a conventional melting pouring gun head is 25mm, when the gun head is inserted into the pouring gate insert of the die for melting pouring, the distance between the lower edge of the gun head and the lower die surface is too close, and a melting residue hard block which is not cleaned up after the gun head is used last time easily enters leather, so that uneven marks on the leather surface of a product are easy to occur. b. The distance between the upper die and the lower die in the pouring gate area is only 3-5mm, the pouring gate area is too thin, a stub bar can be generated at the back pouring gate position of the back plate after the melting material is poured, and the shrinkage cooling speed of the melting material at the stub bar position is inconsistent with that of the peripheral melting material, so that the imprinting of the pouring gate can occur. The problem of soft backplate pouring gate mark can not be thoroughly solved by the traditional mould structure, and the elimination of the pouring gate mark becomes a great technological problem in the soft backplate production industry.
Disclosure of Invention
Aiming at the problems in the prior art, the utility model aims to provide a soft back plate foaming mold so as to solve the problem that the soft back plate is easy to have pouring mouth marks.
In order to achieve the above purpose, the utility model provides a soft back plate foaming mold, which comprises an upper mold and a lower mold, wherein an insert is embedded at a pouring opening of the upper mold, the insert protrudes out of the outer surface of the upper mold, the protruding height is 15-20 mm, the overall height of the insert is larger than the length of a pouring gun head, a pit is concavely arranged on the inner surface of the upper mold relative to the area around the pouring opening, the pit and the inner surface of the upper mold are in circular arc transition, and the depth of the pit is 2-3mm.
In the scheme, the method comprises the following steps: the insert is hollow and cylindrical, and an anti-rotation plane is arranged on the side surface of the insert, so that the insert is conveniently and stably embedded in the upper die sprue gate.
In the scheme, the method comprises the following steps: the concave pits are arc-shaped concave pits which are wound around the pouring gate in a circle, and are formed corresponding to the pouring gate area, so that the distance between the upper die and the lower die in the pouring gate area can be greatly increased.
In the scheme, the method comprises the following steps: the height of the insert protruding out of the outer surface of the upper die is 20mm, the depth of the pit is 3mm, and the arrangement can prevent a product from leaving cast-in-situ sprue marks.
The beneficial effects of the utility model are as follows: 1. the pouring gun head is used for being inserted into the upper die pouring gate insert for melting and pouring, and the distance between the lower edge of the gun head and the inner surface of the lower die is increased by heightening the insert, so that the phenomenon that melting residue hard blocks enter leather due to too close distance is avoided, and uneven marks (pouring gate marks) are formed on the leather surface of the soft backboard; 2. the concave pits are concavely arranged on the inner surface of the upper die, so that the distance between the upper die and the lower die in the pouring hole area is increased, the thickness of the pouring hole area of the back plate is increased, the consistency of shrinkage cooling speeds of the material in the pouring hole area and the peripheral material is improved, and the phenomenon that pouring hole marks are generated due to inconsistent shrinkage cooling speeds of the material is avoided; in conclusion, the utility model greatly reduces the rejection rate of the product caused by the gate marks, effectively reduces the manufacturing cost, and solves the problem that the gate marks in the soft back plate manufacturing industry are difficult to eliminate.
Drawings
Fig. 1 is a schematic structural view of a conventional soft back plate foaming mold.
Fig. 2 is a schematic view of the outer surface of the upper die of the present utility model.
Fig. 3 is a schematic view of the inner surface of the upper die of the present utility model.
Detailed Description
As shown in fig. 2-3, a soft back plate foaming mold mainly comprises an upper mold 1 and a lower mold.
The insert 3 is embedded at the pouring opening 2 of the upper die 1, the insert 3 protrudes out of the outer surface of the upper die 1, the protruding height is 15-20 mm, and the whole height of the insert 3 is larger than the length of the pouring gun head. The pouring gun head is used for being inserted into the insert 3 of the pouring gate 2 to perform melting pouring, the insert 3 is increased, the distance between the lower edge of the gun head and the inner surface of the lower die is increased, and the phenomenon that melting residues hard blocks enter leather due to too close distance is avoided, so that a pouring gate mark appears on the leather surface of a soft back plate (the surface of the soft back plate, which is close to the upper die 1, is called a melting surface, and the surface, which is close to the lower die, is called a leather surface).
The inner surface of the upper die 1 is concavely provided with a pit 4 relative to the area around the pouring gate 2, the pit 4 and the inner surface of the upper die 1 are in arc transition, the depth of the pit 4 is 2-3mm, the distance between the upper die and the lower die in the pouring gate area is increased through the pit, so that the thickness of the pouring gate area of the back plate is increased, the consistency of shrinkage cooling speeds of the material in the pouring gate area and the peripheral material is improved, and the generation of pouring gate marks caused by inconsistent shrinkage cooling speeds of the material is avoided.
Preferably, the insert 3 is hollow and cylindrical, and an anti-rotation plane 31 is arranged on the side surface of the insert 3, so that the insert is conveniently and stably embedded in the sprue gate 2 of the upper die 1.
Preferably, the pit 4 is a circular arc pit around the gate 2, and is formed corresponding to the gate 2 region, so that the distance between the upper die and the lower die in the gate 2 region can be greatly increased.
Preferably, the height of the insert 3 protruding out of the outer surface of the upper die 1 is 20mm, and the depth of the pit 4 is 3mm, which is beneficial to greatly reducing the imprint of the cast-in-situ pouring gate of the product.
Claims (4)
1. The utility model provides a soft backplate foaming mould, includes mould (1) and lower mould, the pouring gate (2) department of going up mould (1) inlays and is equipped with insert (3), its characterized in that: the insert (3) protrudes out of the outer surface of the upper die (1), the protruding height is 15-20 mm, the overall height of the insert (3) is larger than the length of the casting gun head, a pit (4) is concavely arranged on the inner surface of the upper die (1) relative to the area around the casting opening (2) inwards, the pit (4) and the inner surface of the upper die (1) are in arc transition, and the depth of the pit (4) is 2-3mm.
2. The soft back plate foaming mold according to claim 1, wherein: the insert (3) is hollow and cylindrical, and an anti-rotation plane (31) is arranged on the side surface of the insert (3).
3. The soft back plate foaming mold according to claim 1, wherein: the pit (4) is a circular arc pit which winds around the pouring opening (2).
4. The soft back plate foaming mold according to claim 1, wherein: the height of the insert (3) protruding out of the outer surface of the upper die (1) is 20mm, and the depth of the pit (4) is 3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321980785.4U CN220179973U (en) | 2023-07-25 | 2023-07-25 | Soft backboard foaming mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321980785.4U CN220179973U (en) | 2023-07-25 | 2023-07-25 | Soft backboard foaming mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220179973U true CN220179973U (en) | 2023-12-15 |
Family
ID=89102746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321980785.4U Active CN220179973U (en) | 2023-07-25 | 2023-07-25 | Soft backboard foaming mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220179973U (en) |
-
2023
- 2023-07-25 CN CN202321980785.4U patent/CN220179973U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |