CN113858552A - Common molding technology for high glazing surface and dermatoglyph surface of product - Google Patents
Common molding technology for high glazing surface and dermatoglyph surface of product Download PDFInfo
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- CN113858552A CN113858552A CN202111186771.0A CN202111186771A CN113858552A CN 113858552 A CN113858552 A CN 113858552A CN 202111186771 A CN202111186771 A CN 202111186771A CN 113858552 A CN113858552 A CN 113858552A
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- 238000000465 moulding Methods 0.000 title claims description 22
- 238000005516 engineering process Methods 0.000 title abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 102
- 238000013037 co-molding Methods 0.000 claims abstract description 12
- 239000000498 cooling water Substances 0.000 claims description 15
- 238000002347 injection Methods 0.000 claims description 13
- 239000007924 injection Substances 0.000 claims description 13
- 230000000903 blocking effect Effects 0.000 claims description 11
- 239000003292 glue Substances 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 8
- 238000009413 insulation Methods 0.000 claims description 3
- 235000009537 plain noodles Nutrition 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 10
- 239000010985 leather Substances 0.000 abstract description 13
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010892 electric spark Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 231100000241 scar Toxicity 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/34—Moulds having venting means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/37—Mould cavity walls, i.e. the inner surface forming the mould cavity, e.g. linings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/37—Mould cavity walls, i.e. the inner surface forming the mould cavity, e.g. linings
- B29C45/372—Mould cavity walls, i.e. the inner surface forming the mould cavity, e.g. linings provided with means for marking or patterning, e.g. numbering articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/72—Heating or cooling
- B29C45/73—Heating or cooling of the mould
- B29C45/7312—Construction of heating or cooling fluid flow channels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/72—Heating or cooling
- B29C45/73—Heating or cooling of the mould
- B29C45/7337—Heating or cooling of the mould using gas or steam
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
- B29L2031/3005—Body finishings
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses a co-molding technology of a high gloss surface and a dermatoglyph surface on a product, which comprises a front mold and a rear mold, wherein the front mold comprises a front mold core, the rear mold comprises a rear mold core, the front mold core comprises a first mold core piece and a second mold core piece, a cavity is formed at the bottom end of the first mold core piece, a conformal water cavity is formed at the top end of the first mold core piece, a mold warm water channel is arranged on the side wall of the first mold core piece, the second mold core piece is arranged at the upper end of the first mold core piece, the upper part of the inner wall of the cavity is a high gloss surface, and the lower part of the inner wall of the cavity is a dermatoglyph surface; when the die is closed, the rear die core extends into the cavity and forms a product in the cavity, so that the upper end of the product is formed into a highlight part, the lower end of the product is formed into a leather grain part, steam is injected into the conformal water cavity, and flowing water is injected into the die warm water path. The invention can simultaneously form the high-gloss surface and the dermatoglyph surface, thereby reducing the cost and improving the efficiency.
Description
Technical Field
The invention relates to the technical field of molds, in particular to a co-molding technology of a high gloss surface and a dermatoglyph surface on a product.
Background
With the development of the automotive industry, automobiles are rapidly becoming the most common vehicle in society as a personal consumer product. The requirements of consumers on the quality of automobiles are increasing day by day, automobile decorating parts are also increasing novel day by day, and the outer surfaces of the automobile decorating parts are also increasing complex.
For example, the lower end of the automobile air outlet panel is a leather-grain part with a leather-grain surface on the outer wall, and the upper end of the automobile air outlet panel is a highlight part with a highlight surface on the outer wall, however, the forming temperature of the leather-grain surface is not easy to exceed 100 ℃, and stress marks or uneven gloss are generated when the forming temperature exceeds 100 ℃. The molding temperature of the highlight surface needs to reach 160 ℃ instantly, and if not, the weld line cannot be eliminated.
If the skin-grain part and the highlight part of the product are molded by simply arranging the skin-grain surface and the highlight surface on the inner wall of the cavity of the mold during product injection, the weld line of the highlight part of the product cannot be eliminated when the temperature of the cavity is below 100 ℃, and the skin-grain part of the product has stress marks or uneven gloss when the temperature of the cavity is 160 ℃.
Therefore, in the prior art, the air outlet panel cannot be formed through a set of dies, the dermatoglyph part and the highlight part are usually required to be formed separately and then assembled to form the same part, so that the two dies are required to be produced separately, and then the assembly is carried out, so that the cost is high, the time and the labor are consumed, and the production efficiency is low.
Disclosure of Invention
Aiming at the defects of the prior art, the common molding technology of the high gloss surface and the dermatoglyph surface on the product is provided, the high gloss surface and the dermatoglyph surface can be molded on one product simultaneously on one set of mold, the cost is reduced, and the efficiency is improved.
In order to achieve the above object, the present invention provides the following technical solutions.
The common molding technology for the high glazing surface and the dermatoglyph surface of the product comprises a front mold and a rear mold, wherein the front mold comprises a front mold core, the rear mold comprises a rear mold core, the front mold core comprises a first mold core piece and a second mold core piece, a cavity is formed at the bottom end of the first mold core piece, a conformal water cavity is formed at the top end of the first mold core piece, the conformal water cavity is distributed at the upper end of the periphery of the cavity and is annular matched with the periphery of the cavity, a mold temperature water path is arranged on the side wall of the first mold core piece, the mold temperature water path is distributed at the lower end of the periphery of the cavity, the second mold core piece is arranged at the upper end of the first mold core piece, so that the conformal water cavity of the first mold core piece is sealed, the upper part of the inner wall of the cavity is a highlight surface, and the lower part of the inner wall of the cavity is a dermatoglyph surface; when the die is closed, the rear die core extends into the cavity, steam is injected into the conformal water cavity before filling, flowing water is injected into the die warm water path, the temperature of the steam enables the cavity with the highlight non-trace surface to be rapidly heated, the temperature of the flowing water enables the cavity with the leather-line surface to be kept in a preset range, and after filling, the upper end of the product is formed into the highlight non-trace part, and the lower end of the product is formed into the leather-line part.
The invention has the beneficial effects that: in the structure of the invention, the upper part of the inner wall of the cavity is provided with the highlight surface, the lower part of the inner wall of the cavity is provided with the dermatoglyph surface, so that the upper end of a product can be molded into the highlight part during molding, the lower end of the product is molded into the dermatoglyph part, but because the molding temperature of the dermatoglyph surface is not more than 100 ℃, and stress marks or uneven gloss are generated, the molding temperature of the highlight surface needs to reach about 160 ℃ instantly, and the welding line cannot be eliminated, the front mold core is split into the first mold core piece and the second mold core piece, so that the top end of the first mold core piece can form the conformal water cavity, the side wall of the first mold core piece forms the mold temperature water path, after the mold is closed and before filling, steam is injected into the conformal water path, the upper end of the side wall of the mold cavity and the lower end of the side wall of the mold cavity can have different temperatures, and the temperature of the steam enables the cavity of the highlight surface without the scar to be heated rapidly, the temperature of the flowing water enables the cavity of the leather grain surface to be kept in a preset range, when a molded product is filled in the cavity, the temperature of the flowing water is matched with the molding temperature of the highlight surface, the temperature of the flowing water is matched with the molding temperature of the leather grain surface, the temperature of the water vapor and the temperature of the flowing water are accurately controlled, the temperature interference of the upper end and the lower end of the periphery of the cavity is reduced, a weld line can be eliminated when the highlight part is molded at the upper end of the product, when the leather grain part is molded at the lower end of the product, no stress mark or uneven gloss is generated, and the gap between the stress mark and the leather grain surface and the highlight surface can be almost ignored.
As a modification of the invention, the temperature of the water vapour is between 140 and 160 degrees Celsius and the temperature of the flowing water is between 70 and 80 degrees Celsius. Through the improvement, the high-gloss surface can be formed at the upper end of the product, and the leather grain surface can be formed at the lower end of the product.
As an improvement of the present invention, an injection passage communicated with the conformal water cavity is provided on the second core member of the front core, and a flow dividing block located at a connection port of the injection passage is provided in the conformal water cavity. Through the improvement, the following water cavity can be quickly and uniformly distributed with the water vapor.
As an improvement of the invention, a flow blocking block is also arranged in the conformal water cavity, and the flow blocking block and the flow splitting block are circumferentially and symmetrically distributed. Through the improvement, the water vapor can be uniformly distributed.
As an improvement of the invention, the front mold core is also provided with an outflow channel communicated with the conformal water cavity, a connecting port of the outflow channel is arranged at the position of the flow blocking block, when the temperature is raised, water vapor is injected into the injection channel and enters the conformal water channel and then is discharged through the outflow channel, and when the temperature is lowered, cooling water is injected into the outflow channel and enters the conformal water channel and then is discharged through the injection channel. Through the improvement, the temperature of the conformal water channel can be quickly raised and lowered.
As an improvement of the present invention, the lower end of the first mold core piece extends downward to form an extension portion, the extension portion is provided with an extension waterway located below the mold temperature waterway, and the extension waterway is distributed at the lower end of the periphery of the mold cavity and is communicated with the mold temperature waterway. Through the improvement, the temperature of the lower end of the periphery of the cavity can be more uniform, and heat can be absorbed simultaneously.
As an improvement of the present invention, a sealing ring is disposed between the first mold core piece and the second mold core piece, and the sealing ring is disposed at the periphery of the conformal water cavity. Through the improvement, the sealing performance is good, and heat loss is avoided.
As an improvement of the present invention, the first core piece and the second core piece are fixedly connected by a fastener.
As an improvement of the present invention, the top end and the side wall of the second mold insert are provided with a plurality of heat insulation pads. Through the improvement, heat is prevented from being transferred to other parts of the die.
As an improvement of the invention, the die cavity is internally provided with an upper part of the inner wall for forming the high-brightness surface and a lower part of the inner wall for forming the dermatoglyph surface, and the roughness of the upper part of the inner wall is less than that of the lower part of the inner wall.
As an improvement of the invention, the rear die is provided with an exhaust groove which is communicated with the die cavity.
As an improvement of the invention, the rear die core is also provided with a glue inlet communicated with the die cavity, and the glue inlet is in a bevel shape.
As an improvement of the present invention, the side wall of the second mold core piece is provided with a cooling water channel, and the cooling water channel is distributed above the conformal water cavity.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
FIG. 2 is a schematic view of the front mold core and the rear mold core of the present invention.
FIG. 3 is a schematic view of a first mold insert according to the present invention.
FIG. 4 is a schematic view of another angle structure of the first mold insert of the present invention.
FIG. 5 is a front view of the first core member of the present invention.
Fig. 6 is a cross-sectional view a-a of fig. 5 of the present invention.
FIG. 7 is a left side view of the first core member of the present invention.
Fig. 8 is a cross-sectional view a-a of fig. 7 of the present invention.
FIG. 9 is a schematic view of a second mold insert according to the present invention.
FIG. 10 is a front view of a second core member of the present invention.
Fig. 11 is a cross-sectional view a-a of fig. 10 of the present invention.
Fig. 12 is a cross-sectional view at B-B of fig. 10 of the present invention.
Fig. 13 is a schematic view of the rear core structure of the present invention.
Fig. 14 is a schematic diagram of the product structure of the present invention.
In the figure, 1, front mould; 1.1, a first die core piece; 1.11, a cavity; 1.12, a conformal water cavity; 1.13, a mold warm water path; 1.14, an extension; 1.15, extending a waterway; 1.16, a shunting block; 1.17, a flow blocking block; 1.2, a second die core piece; 1.21, an injection channel; 1.22, an outflow channel; 1.23, a cooling water path; 1.3, a heat insulation pad; 2. a rear mold; 2.1, a rear mould core; 2.11, a glue inlet; 2.12, an exhaust groove; 3. producing a product; 3.1, a highlight part; 3.2, dermatoglyph part.
Detailed Description
The invention is further explained with reference to the drawings.
Referring to fig. 1 to 14, the technology for co-molding a high gloss surface and a dermatoglyph surface on a product includes a front mold 1 and a rear mold 2, where the front mold 1 includes a front mold core, the rear mold 2 includes a rear mold core 2.1, the front mold core includes a first mold core piece 1.1 and a second mold core piece 1.2, the first mold core piece 1.1 and the second mold core piece 1.2 are stacked, a cavity 1.11 is formed at the bottom end of the first mold core piece 1.1, the upper portion of the inner wall of the cavity 1.11 is a high gloss surface, and the lower portion of the inner wall of the cavity 1.11 is a dermatoglyph surface; the roughness of the upper part of the inner wall is less than that of the lower part of the inner wall.
When the processing is carried out, the upper part and the lower part of the inner wall of the cavity 1.11 are directly processed through electric sparks, and the upper part of the inner wall of the cavity 1.11 is processed through manual polishing, so that the roughness of the upper part of the inner wall is smaller than that of the lower part of the inner wall, the high light part 3.1 of the product 3 can be formed on the upper part of the inner wall, and the dermatoglyph part 3.2 of the product 3 can be formed on the lower part of the inner wall.
First mould benevolence spare 1.1's top is formed with conformal water cavity 1.12, conformal water cavity 1.12 distributes in die cavity 1.11's periphery upper end, and conformal water cavity 1.12 be with the annular of die cavity 1.11's periphery looks adaptation, the conformal water cavity is open annular for the conformal water route can be with the upper end cladding of die cavity 1.11 periphery.
The side wall of the first die core piece 1.1 is provided with a die warm water path 1.13, the die warm water path 1.13 is distributed at the lower end of the periphery of the die cavity 1.11, the second die core piece 1.2 is arranged at the upper end of the first die core piece 1.1, so that an opening of a conformal water cavity 1.12 of the first die core piece 1.1 is sealed, an injection channel 1.21 communicated with the conformal water cavity 1.12 is arranged at one side of the second die core piece 1.2, and an outflow channel 1.22 communicated with the conformal water cavity 1.12 is arranged at the other side of the second die core piece 1.2.
The first core piece 1.1 and the second core piece 1.2 are fixedly connected by a fastening member, in this embodiment, the fastening member is a screw. And a sealing ring is arranged between the first die core piece 1.1 and the second die core piece 1.2, and the sealing ring is arranged on the periphery of the conformal water cavity 1.12, so that the sealing performance between the first die core piece 1.1 and the second die core piece 1.2 is good, and the heat loss in the conformal water cavity 1.12 is avoided. The top and the lateral wall of second mould benevolence piece 1.2 are equipped with a plurality of heat insulating mattress 1.3, when second mould benevolence piece 1.2 was installed to front mould 1 on, can block heat transfer to other positions of mould through heat insulating mattress 1.3, can avoid calorific loss, can also avoid causing the damage to other positions of mould because of the high temperature.
The side wall of the second die core piece 1.2 is provided with a cooling water channel 1.23, and the cooling water channel 1.23 is distributed above the conformal water cavity 1.12. The cooling water is injected into the cooling water channel 1.23 all the time, so that the second die core piece 1.2 is kept at a low temperature all the time, when the heat in the shape following water cavity 1.12 is transferred to the second die core piece 1.2, the heat can be absorbed by the cooling water in the cooling water channel 1.23 on the second die core piece 1.2, thereby avoiding the heat being transferred to other parts of the die, avoiding the damage to other parts of the die due to overhigh temperature, and simultaneously avoiding the overhigh temperature on the second die core piece 1.2.
When the die is closed, the rear die core 2.1 extends into the die cavity 1.11, a die cavity is formed between the die cavity 1.11 and the rear die core 2.1, the rear die core 2.1 is provided with a glue inlet 2.11 communicated with the die cavity 1.11, and a medium is filled into the die cavity, so that a product 3 is formed. The glue inlet 2.11 is in a bevel shape, and the area of the glue inlet 2.11 is increased, so that the shearing force is reduced, the reduction of a forming medium is reduced, and the generation of gas is reduced. And the back mould 2 is provided with an exhaust duct 2.12, the exhaust duct 2.12 is communicated with the mould cavity, when the product 3 is molded and gas is generated, the gas can be timely exhausted to the outside through the exhaust duct 2.12.
Before filling, injecting steam into the conformal water cavity 1.12 through the injection channel 1.21, injecting flowing water into the mold warm water path 1.13, wherein the temperature of the steam enables the mold cavity 1.11 with a high gloss and no trace surface to be rapidly heated, the temperature of the flowing water enables the mold cavity 1.11 with a leather grain surface to be kept in a preset range, and the temperature of the steam is matched with the molding temperature of the high gloss surface, namely the temperature of the steam is 140-160 ℃, the temperature of the flowing water is matched with the molding temperature of the leather grain surface, the temperature of the flowing water is 70-80 ℃, and the flowing water is transmitted to the periphery of the mold cavity 1.11, so that the temperature of the upper end of the periphery of the mold cavity 1.11 is different from the temperature of the lower end of the periphery of the mold cavity 1.11, the temperature of the steam is matched with the molding temperature of the high gloss surface, the temperature of the flowing water is matched with the molding temperature of the leather grain surface, the upper end of the product 3 can eliminate a weld line when the high gloss portion 3.1 is molded, and the lower end of the product 3 is molded into the leather grain portion 3.2, no stress mark or uneven gloss is generated.
The conformal water cavity 1.12 is internally provided with a shunting block 1.16 and a flow blocking block 1.17, wherein the shunting block 1.16 is positioned at a connecting port of an injection channel 1.21, the flow blocking block 1.17 is positioned at a connecting port of an output channel, temperature rise is needed during molding, water vapor is injected through the injection channel 1.21, when the water vapor enters the conformal water cavity 1.12, the water vapor is divided into two paths through the shunting block 1.16, the two paths of water vapor move in opposite directions, so that the whole conformal water cavity 1.12 can be quickly distributed, the flow blocking block 1.17 and the shunting block 1.16 are circumferentially and symmetrically arranged, so that the conformal water cavity 1.12 is divided into a left part and a right part, the two paths of water vapor respectively enter the corresponding parts and do not interfere with each other, so that the water vapor in the conformal water cavity 1.12 can be uniformly distributed, the temperature in the conformal water cavity 1.12 can be quickly raised, the temperature is uniform, and after molding, cooling water needs to be injected through the output channel, when the cooling water enters the conformal water cavity 1.12, the flow blocking blocks 1.17 are divided into two paths, and two paths of cooling water enter the corresponding shape following water cavity 1.12 parts and do not interfere with each other, so that the shape following water cavity 1.12 can be rapidly cooled, the influence of long-time high temperature on the die is avoided, and the service life of the die is prolonged. And because the mould can the whole product 3 that has high plain noodles and dermatoglyph face of one shot forming, the shaping cycle is fast, consequently needs to realize rapid heating up and cooling to satisfy subsequent processing condition.
The lower end of the first die core piece 1.1 extends downwards to form an extension part 1.14, an extension water path 1.15 positioned below the die temperature water path 1.13 is arranged on the extension part 1.14, and the extension water path 1.15 is distributed at the lower end of the periphery of the die cavity 1.11 and is communicated with the die temperature water path 1.13. Because the width of the leather grain surface of the product 3 is longer, the extension waterway 1.15 is additionally arranged, the mold temperature waterway 1.13 is positioned on the upper layer, the extension waterway 1.15 is positioned on the lower layer, the lower end of the periphery of the cavity 1.11 is wrapped, the width of the leather grain surface of the product 3 is adapted, the lower part of the periphery of the cavity 1.11 can be rapidly heated and is stable and uniform, and because the steam with higher temperature is injected into the shape following water cavity 1.12, after the heat is transferred to the upper end of the periphery of the cavity 1.11, part of the heat is also transferred to the lower end of the periphery of the cavity 1.11, the extension part 1.14 is arranged, the size of the extension part is increased, after the heat is absorbed, the temperature influence on the lower section of the first mold core part 1.1 is smaller, the temperature change of the lower end of the periphery of the cavity 1.11 is not large, and no stress mark or uneven gloss can be generated when the leather grain part 3.2 is formed.
In the structure of the invention, the upper part of the inner wall of the cavity 1.11 is a highlight surface, the lower part of the inner wall of the cavity 1.11 is a dermatoglyph surface, so that the upper end of a product 3 can be molded into a highlight part 3.1 during molding, the lower end of the product 3 is molded into a dermatoglyph part 3.2, but because the molding temperature of the dermatoglyph surface is not more than 100 ℃, and stress marks or uneven gloss are generated, the molding temperature of the highlight surface needs to reach about 160 ℃ instantly, and a weld line cannot be eliminated, a front mold core is split into a first mold core piece 1.1 and a second mold core piece 1.2, so that a conformal water cavity 1.12 can be formed at the top end of the first mold core piece 1.1, a mold temperature water channel 1.13 is formed at the side wall of the first mold core piece 1.1, steam is injected into the conformal water cavity during mold closing, and flowing water is injected into the mold channel 1.13, so that the upper end of the side wall of the cavity and the lower end of the side wall of the cavity can have different temperatures, when the product 3 is molded in the die cavity, the temperature of the steam is matched with the molding temperature of the highlight surface, the temperature of the flowing water is matched with the molding temperature of the dermatoglyph surface, the temperature of the steam and the temperature of the flowing water are accurately controlled, the temperature interference of the upper end of the periphery and the lower end of the die cavity 1.11 is reduced, the upper end of the product 3 can eliminate a weld line when the highlight surface is molded, when the lower end of the product 3 is molded into the dermatoglyph portion 3.2, no stress mark or uneven gloss is generated, and the gaps between the stress mark and the dermatoglyph surface and the highlight surface can be almost ignored.
The above description is only a preferred embodiment of the present invention, and all equivalent changes or modifications of the structure, characteristics and principles described in the present invention are included in the scope of the present invention.
Claims (10)
1. The common molding technique of high plain noodles and dermatoglyph face on the product, including front mould and back mould, its characterized in that: the front die comprises a front die core, the rear die comprises a rear die core, the front die core comprises a first die core piece and a second die core piece, a cavity is formed at the bottom end of the first die core piece, a shape following water cavity is formed at the top end of the first die core piece, the shape following water cavity is distributed at the upper end of the periphery of the cavity and is in an annular shape matched with the periphery of the cavity, a die temperature water path is arranged on the side wall of the first die core piece, the die temperature water path is distributed at the lower end of the periphery of the cavity, the second die core piece is arranged at the upper end of the first die core piece, so that the shape following water cavity of the first die core piece is sealed, the upper part of the inner wall of the cavity is a highlight surface, and the lower part of the inner wall of the cavity is a dermatoglyph surface;
when the die is closed, the rear die core extends into the cavity, steam is injected into the conformal water cavity before filling, flowing water is injected into the die warm water path, the temperature of the steam enables the cavity with the highlight non-trace surface to be rapidly heated, the temperature of the flowing water enables the cavity with the leather-line surface to be kept in a preset range, and after filling, the upper end of the product is formed into the highlight non-trace part, and the lower end of the product is formed into the leather-line part.
2. The co-molding technique of a smooth surface and a dermatoglyph surface on a product according to claim 1, wherein: and an injection channel communicated with the shape following water cavity is arranged on the second die core piece of the front die core, and a flow distribution block positioned at a connecting port of the injection channel is arranged in the shape following water cavity.
3. The co-molding technique of a smooth surface and a dermatoglyph surface on a product according to claim 2, wherein: the following water cavity is also provided with a flow blocking block, and the flow blocking block and the flow dividing block are circumferentially and symmetrically distributed.
4. The co-molding technique of a smooth surface and a dermatoglyph surface on a product of claim 3, wherein: the front mold core is also provided with an outflow channel communicated with the conformal water cavity, a connector of the outflow channel is arranged at the position of the flow blocking block, when the temperature is raised, water vapor is injected into the channel and then discharged through the outflow channel after entering the conformal water channel, and when the temperature is lowered, cooling water is injected into the outflow channel and then discharged through the injection channel after entering the conformal water channel.
5. The co-molding technique of a smooth surface and a dermatoglyph surface on a product according to claim 1, wherein: the lower end of the first die core piece extends downwards to form an extension part, an extension water path positioned below the die temperature water path is arranged on the extension part, and the extension water path is distributed at the lower end of the periphery of the die cavity and communicated with the die temperature water path.
6. The co-molding technique of a smooth surface and a dermatoglyph surface on a product according to claim 1, wherein: the first die core piece and the second die core piece are fixedly connected through a fastener, a sealing ring is arranged between the first die core piece and the second die core piece, and the sealing ring is arranged on the periphery of the conformal water cavity.
7. The co-molding technique of a smooth surface and a dermatoglyph surface on a product according to claim 1, wherein: the top end and the side wall of the second die core piece are provided with a plurality of heat insulation pads.
8. The co-molding technique of a smooth surface and a dermatoglyph surface on a product according to claim 1, wherein: and a cooling water channel is arranged on the side wall of the second die core piece and distributed above the conformal water cavity.
9. The co-molding technique of a smooth surface and a dermatoglyph surface on a product according to claim 1, wherein: and the rear die is provided with an exhaust groove which is communicated with the die cavity.
10. The co-molding technique of a smooth surface and a dermatoglyph surface on a product according to claim 1, wherein: the back mould core is also provided with a glue inlet communicated with the mould cavity, and the glue inlet is in a bevel shape.
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| CN202111186771.0A CN113858552B (en) | 2021-10-12 | 2021-10-12 | Co-molding technology for high-gloss surface and leather pattern surface on product |
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| CN113858552B CN113858552B (en) | 2024-02-02 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103921408A (en) * | 2013-11-08 | 2014-07-16 | 通达(厦门)科技有限公司 | Method and die for making ultra thin specular injection molded part |
| CN205467117U (en) * | 2016-01-21 | 2016-08-17 | 青岛海尔模具有限公司 | Highlight steam flip -chip mould |
| KR20170062819A (en) * | 2015-11-30 | 2017-06-08 | 박제현 | 3D rapid heating and cooling structures and the method of the mold |
| KR20170116504A (en) * | 2016-04-11 | 2017-10-19 | 주식회사 유도 | Lightweight high-gloss injection molding machines |
| CN211843070U (en) * | 2019-12-31 | 2020-11-03 | 惠州市银宝山新实业有限公司 | Injection molding die for face shell |
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2021
- 2021-10-12 CN CN202111186771.0A patent/CN113858552B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103921408A (en) * | 2013-11-08 | 2014-07-16 | 通达(厦门)科技有限公司 | Method and die for making ultra thin specular injection molded part |
| KR20170062819A (en) * | 2015-11-30 | 2017-06-08 | 박제현 | 3D rapid heating and cooling structures and the method of the mold |
| CN205467117U (en) * | 2016-01-21 | 2016-08-17 | 青岛海尔模具有限公司 | Highlight steam flip -chip mould |
| KR20170116504A (en) * | 2016-04-11 | 2017-10-19 | 주식회사 유도 | Lightweight high-gloss injection molding machines |
| CN211843070U (en) * | 2019-12-31 | 2020-11-03 | 惠州市银宝山新实业有限公司 | Injection molding die for face shell |
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| CN113858552B (en) | 2024-02-02 |
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Denomination of invention: High gloss surface and leather grain surface co forming technology on products Granted publication date: 20240202 Pledgee: Industrial and Commercial Bank of China Limited Ningbo Branch Pledgor: NINGBO JUNSHENG QUNYING AUTOMOBILE SYSTEM Co.,Ltd. Registration number: Y2024330001821 |