CN113858552B - Co-molding technology for high-gloss surface and leather pattern surface on product - Google Patents
Co-molding technology for high-gloss surface and leather pattern surface on product Download PDFInfo
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- CN113858552B CN113858552B CN202111186771.0A CN202111186771A CN113858552B CN 113858552 B CN113858552 B CN 113858552B CN 202111186771 A CN202111186771 A CN 202111186771A CN 113858552 B CN113858552 B CN 113858552B
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- 239000010985 leather Substances 0.000 title claims abstract description 30
- 238000005516 engineering process Methods 0.000 title claims abstract description 23
- 238000013037 co-molding Methods 0.000 title claims description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 110
- 238000000465 moulding Methods 0.000 claims description 17
- 239000000498 cooling water Substances 0.000 claims description 15
- 238000002347 injection Methods 0.000 claims description 14
- 239000007924 injection Substances 0.000 claims description 14
- 239000003292 glue Substances 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 7
- 238000007493 shaping process Methods 0.000 claims description 5
- 238000009413 insulation Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 1
- 238000003466 welding Methods 0.000 description 5
- 230000000903 blocking effect Effects 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 239000002932 luster Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010892 electric spark Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 235000009537 plain noodles Nutrition 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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 technology for jointly forming a highlight surface and a dermatoglyph surface of a product, which comprises a front die and a rear die, wherein 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 conformal water cavity is formed at the top end of the first die core piece, a die Wen Shuilu is arranged on the side wall of the first die core piece, the second die core piece is arranged at the upper end of the first die core piece, the upper part of the inner wall of the cavity is the highlight surface, and the lower part of the inner wall of the cavity is the dermatoglyph surface; when the mold is closed, the rear mold insert stretches into the cavity, and the product is molded in the cavity, so that the upper end of the product is molded into a highlight part, the lower end of the product is molded into a leather pattern part, steam is injected into the shape-following water cavity, and flowing water is injected into the mold Wen Shuilu. The invention can simultaneously mold the high-gloss surface and the leather surface, reduces the cost and improves the efficiency.
Description
Technical Field
The invention relates to the technical field of dies, in particular to a co-molding technology of a highlight surface and a dermatoglyph surface on a product.
Background
With the development of the automobile industry, automobiles are rapidly becoming the most common means of transportation in society as a personal consumer product. Consumers are increasingly demanding on automobile quality, automobile decorative parts are increasingly novel, and the outer surfaces are also increasingly complex.
For example, the lower end of the product is a leather grain part with a leather grain surface on the outer wall, and the upper end of the product is a highlight part with a highlight surface on the outer wall, however, the molding temperature of the leather grain surface is not easy to exceed 100 ℃, and stress marks or uneven gloss are generated. The molding temperature of the high-gloss surface needs to reach 160 ℃ instantaneously, and if not, the welding line cannot be eliminated.
If the dermatoglyph surface and the highlight surface are arranged on the inner wall of the cavity of the die, when the product is injection molded, the dermatoglyph surface and the highlight surface are used for molding the dermatoglyph part and the highlight part of the product, so that a welding line of the highlight part of the product can not be eliminated when the temperature of the cavity is below 100 ℃, and when the temperature of the cavity is 160 ℃, stress marks or uneven luster are generated on the dermatoglyph part of the product.
Therefore, in the prior art, the air outlet panel cannot be formed through a group of dies, the leather pattern piece and the highlight piece are required to be formed independently, and then the leather pattern piece and the highlight piece are assembled to form the same part, so that two dies are required to be produced independently, and then the leather pattern piece and the highlight piece are assembled, so that the cost is high, time and labor are consumed, and the production efficiency is low.
Disclosure of Invention
Aiming at the defects and defects of the prior art, the co-molding technology of the high-gloss surface and the leather surface on the product is provided, and the high-gloss surface and the leather surface can be molded on one product simultaneously through one set of mold, so that 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 upper high-gloss surface and the leather surface of the product are formed together, the product comprises a front die and a rear die, 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 conformal water cavity is formed at the top end of the first die core piece, the conformal water cavity is distributed at the upper end of the periphery of the cavity, the conformal water cavity is in an annular shape matched with the periphery of the cavity, a die water channel is arranged on the side wall of the first die core piece, the die water channel 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 conformal water cavity of the first die core piece is closed, the upper part of the inner wall of the cavity is high-gloss surface, and the lower part of the inner wall of the cavity is leather surface; when the mold is closed, the rear mold insert stretches into the cavity, steam is injected into the cavity along with the shape before filling, flowing water is injected into the mold Wen Shuilu, the temperature of the steam enables the cavity of the highlight traceless surface to be quickly heated, the temperature of the flowing water enables the cavity of the dermatoglyph surface to be kept in a preset range, after filling, the upper end of a product is formed into the highlight traceless part, and the lower end of the product is formed into the dermatoglyph part.
The beneficial effects of the invention are as follows: the structure of the invention, through setting the upper part of the inner wall of the cavity as the highlight surface, the lower part of the inner wall of the cavity as the leather grain surface, the upper end of the product can be molded as the highlight part, the lower end of the product is molded as the leather grain part, but because the molding temperature of the leather grain surface is not more than 100 ℃, stress marks or uneven gloss are generated, the molding temperature of the highlight surface needs to be 160 ℃ or so, the welding line cannot be eliminated, therefore, the front mold core is split into the first mold core piece and the second mold core piece, the top end of the first mold core piece can form a conformal water cavity, the side wall of the first mold core piece forms a mold warm water path, after the mold is closed, water vapor is injected into the conformal water cavity before filling, flowing water is injected into the mold Wen Shuilu, the upper end of the side wall of the die cavity and the lower end of the side wall of the die cavity can have different temperatures, the temperature of the water vapor enables the die cavity of the highlight traceless surface to be quickly heated, the temperature of the flowing water enables the die cavity of the dermatoglyph surface to be kept in a preset range, when a formed product is filled in the die cavity, the temperature of the flowing water is matched with the forming temperature of the dermatoglyph surface through the temperature of the water vapor and the forming temperature of the highlight 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 die cavity is reduced, the welding line can be eliminated when the highlight part is formed at the upper end of the product, no stress trace or uneven gloss is generated when the dermatoglyph part is formed at the lower end of the product, and the gap between the stress trace and the dermatoglyph surface and the highlight surface can be almost ignored.
As an improvement of the invention, the temperature of the water vapor is between 140 and 160 degrees celsius, and the temperature of the flowing water is between 70 and 80 degrees celsius. Through above-mentioned improvement for the upper end of product can shaping highlight face, and fashioned lower extreme can shaping dermatoglyph face.
As an improvement of the invention, the second die core piece of the front die core is provided with an injection channel communicated with the conformal water cavity, and a flow dividing block positioned at a connecting port of the injection channel is arranged in the conformal water cavity. Through the improvement, the water vapor can be quickly and uniformly distributed in the following water cavity.
As an improvement of the invention, the shape-following water cavity is also provided with flow blocking blocks which are distributed symmetrically with the flow dividing blocks in circumference. By 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 choke block, water vapor is injected into the injection channel when the temperature is raised, and then is discharged through the outflow channel after entering the conformal water channel, and cooling water is injected into the outflow channel when the temperature is lowered, and is discharged through the injection channel after entering the conformal water channel. Through the improvement, the temperature can be quickly increased and decreased along with the shape of the water channel.
As an improvement of the invention, the lower end of the first die core piece is extended downwards to form an extension part, an extension waterway positioned below the die water channel is arranged on the extension part, and the extension waterway is distributed at the lower end of the periphery of the die cavity and is communicated with the die water channel. Through above-mentioned improvement for the temperature of die cavity periphery lower extreme can be more even, can absorb heat simultaneously.
As an improvement of the invention, a sealing ring is arranged between the first die core piece and the second die core piece, and the sealing ring is arranged at the periphery of the conformal water cavity. Through the improvement, the sealing performance is good, and heat dissipation is avoided.
As an improvement of the invention, the first die core piece and the second die core piece are fixedly connected through a fastener.
As an improvement of the invention, a plurality of heat insulation pads are arranged at the top end and the side wall of the second die core piece. Through the improvement, heat is prevented from being transferred to other parts of the die.
As an improvement of the invention, an upper part of the inner wall for forming the high-gloss surface and a lower part of the inner wall for forming the dermatoglyph surface are arranged in the cavity, and the roughness of the upper part of the inner wall is smaller 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 beveling shape.
As an improvement of the invention, the side wall of the second die 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 diagram of the matching structure of the front mold insert and the rear mold insert according to 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 angular structure of the first mold insert of the present invention.
Fig. 5 is a front view of a first mold insert of the present invention.
FIG. 6 is a cross-sectional view taken at A-A in FIG. 5 in accordance with the present invention.
Fig. 7 is a left side view of a first mold insert of the present invention.
FIG. 8 is a cross-sectional view taken at A-A in FIG. 7 in accordance with the present invention.
FIG. 9 is a schematic diagram of a second mold insert according to the present invention.
Fig. 10 is a front view of a second mold insert of the present invention.
FIG. 11 is a cross-sectional view taken at A-A of FIG. 10 in accordance with the present invention.
FIG. 12 is a cross-sectional view taken at B-B of FIG. 10 in accordance with the present invention.
Fig. 13 is a schematic view of the rear mold insert structure of the present invention.
Fig. 14 is a schematic view of the structure of the product of the present invention.
In the figure, 1, front mould; 1.1, a first die core piece; 1.11, a cavity; 1.12, conformal water cavity; 1.13, die Wen Shuilu; 1.14, extension; 1.15, extending waterways; 1.16, a shunt block; 1.17, a choke block; 1.2, a second die core piece; 1.21, injection channels; 1.22, outflow channel; 1.23, a cooling water path; 1.3, a heat insulation pad; 2. a rear mold; 2.1, a rear mold core; 2.11, a glue inlet; 2.12, an exhaust groove; 3. a product; 3.1, a highlight part; 3.2, dermatoglyph parts.
Detailed Description
The invention is further explained in connection with the drawings.
Referring to the co-molding technology of the high-gloss surface and the skin-pattern surface on the product shown in fig. 1 to 14, the co-molding technology comprises a front mold 1 and a rear mold 2, wherein the front mold 1 comprises a front mold core, the rear mold 2 comprises a rear mold core 2.1, the front mold core comprises 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 part of the inner wall of the cavity 1.11 is the high-gloss surface, and the lower part of the inner wall of the cavity 1.11 is the skin-pattern surface; the roughness of the upper part of the inner wall is smaller than the roughness of the lower part of the inner wall.
During processing, the upper part and the lower part of the inner wall of the cavity 1.11 are directly processed through electric sparks, and then 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 upper part of the inner wall can form the highlight part 3.1 of the product 3, and the lower part of the inner wall can form the dermatoglyph part 3.2 of the product 3.
The top of the first die core piece 1.1 is provided with a shape-following water cavity 1.12, the shape-following water cavity 1.12 is distributed at the upper end of the periphery of the die cavity 1.11, the shape-following water cavity 1.12 is in a ring shape matched with the periphery of the die cavity 1.11, and the shape-following water cavity is in an open ring groove shape, so that the upper end of the periphery of the die cavity 1.11 can be coated by a following waterway.
The side wall of the first die core piece 1.1 is provided with a die water path 1.13, the die 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 the opening of the conformal water cavity 1.12 of the first die core piece 1.1 is closed, one side of the second die core piece 1.2 is provided with an injection channel 1.21 communicated with the conformal water cavity 1.12, and the other side of the second die core piece 1.2 is provided with an outflow channel 1.22 communicated with the conformal water cavity 1.12.
The first core member 1.1 and the second core member 1.2 are fixedly connected by a fastener, which in this embodiment is a screw. And be equipped with the sealing washer between first mould benevolence spare 1.1 and the second mould benevolence spare 1.2, the sealing washer sets up in along with shape water cavity 1.12's periphery for the leakproofness is good between first mould benevolence spare 1.1 and the second mould benevolence spare 1.2, avoids along with shape the heat dissipation in the water cavity 1.12. The top and the lateral wall of second mould benevolence spare 1.2 are equipped with a plurality of heat insulating mattress 1.3, and when second mould benevolence spare 1.2 was installed to front mould 1, can block heat transfer to other positions of mould through heat insulating mattress 1.3, can avoid the heat 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. Cooling water is always injected into the cooling water channel 1.23, so that the second die core piece 1.2 is always kept at a low temperature, when heat in the follow-up 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, the heat is prevented from being transferred to other parts of the die, damage to other parts of the die due to overhigh temperature is avoided, and overhigh temperature on the second die core piece 1.2 can be avoided.
When the mold is closed, the rear mold core 2.1 stretches into the mold cavity 1.11, a mold cavity is formed between the mold cavity 1.11 and the rear mold core 2.1, the rear mold core 2.1 is provided with a glue inlet 2.11 communicated with the mold cavity 1.11, and a medium is filled into the mold cavity, so that a product 3 is molded. The glue inlet 2.11 is in a beveling shape, and the area of the glue inlet 2.11 is increased, so that the shearing force is reduced, the reduction of forming medium is reduced, and the generation of gas is reduced. And be equipped with the gas vent 2.12 on the back mould 2, gas vent 2.12 communicates in the die cavity, and when product 3 shaping, when having the gas to produce, can in time discharge the gas to the external world through gas vent 2.12.
Before filling, water vapor is injected into the conformal water cavity 1.12 through the injection channel 1.21, flowing water is injected into the molding water channel 1.13, the temperature of the water vapor enables the molding cavity 1.11 of the highlight traceless surface to be quickly heated, the temperature of the flowing water enables the molding cavity 1.11 of the dermatoglyph surface to be kept in a preset range, the temperature of the water vapor is matched with the molding temperature of the highlight surface, namely, the temperature of the water vapor is 140-160 ℃, the temperature of the flowing water is matched with the molding temperature of the dermatoglyph surface, the temperature of the flowing water is 70-80 ℃ and is transmitted to the periphery of the molding cavity 1.11, so that the temperature of the upper periphery end of the molding cavity 1.11 is different from the temperature of the lower periphery of the molding cavity 1.11, the temperature of the flowing water is matched with the molding temperature of the highlight surface, the upper end of the product 3 can eliminate wiring when the molding the dermatoglyph surface 3.1, and no uneven luster is generated when the lower end of the product 3 is molded into the dermatoglyph surface 3.2.
The water cavity 1.12 is internally provided with a flow distribution block 1.16 and a flow blocking block 1.17, wherein the flow distribution block 1.16 is positioned at a connecting port of the injection channel 1.21, the flow blocking block 1.17 is positioned at a connecting port of the output channel, the temperature needs to be raised during forming, the water vapor is injected into the water cavity 1.12 through the injection channel 1.21, the water vapor is separated into two paths through the flow distribution block 1.16 when entering the water cavity 1.12, the two paths of water vapor move in opposite directions, so that the whole water cavity 1.12 can be rapidly distributed, the flow blocking block 1.17 and the flow distribution block 1.16 are symmetrically arranged in a circumferential manner, the water cavity 1.12 is divided into left and right parts, the two paths of water vapor respectively enter corresponding parts and do not interfere with each other, the water cavity 1.12 can be uniformly distributed, the water cavity 1.12 can be rapidly raised in temperature and the temperature is uniform, cooling water is required to be cooled through the output channel after forming, the cooling water is injected into the water cavity 1.12 when entering the water cavity 1.12, the water cavity 1.17 can be rapidly distributed, the two paths of the water cavity can be rapidly interfered by the two paths, the water cavity 1.12 can not be prolonged, and the service life of the mold can be prolonged. And because the mould can once only mould the whole product 3 that has high plain noodles and dermatoglyph face, the shaping cycle is fast, consequently need realize quick 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 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 water path 1.13. Because the width of the dermatoglyph surface of the product 3 is longer, the extension waterway 1.15 is additionally arranged, the molding water 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 coated, and the width of the dermatoglyph surface of the product 3 is adapted, so that the lower part of the periphery of the cavity 1.11 can be quickly heated, and is stable and uniform, and after the water vapor with higher temperature is injected into the conformal water cavity 1.12, part of heat can be transferred to the upper end of the periphery of the cavity 1.11, and also transferred to the lower end of the periphery of the cavity 1.11, so that the extension part 1.14 is arranged, the size of the extension waterway is increased, and after the heat is absorbed, the influence on the temperature of the lower section of the first mold insert 1.1 is small, so that the temperature change of the lower end of the periphery of the cavity 1.11 is not large, and stress marks or uneven gloss can be avoided when the dermatoglyph part 3.2 is formed.
According to the structure, the upper part of the inner wall of the cavity 1.11 is provided with the high gloss surface, the lower part of the inner wall of the cavity 1.11 is provided with the skin grain surface, so that the upper end of the product 3 can be formed into the high gloss part 3.1 during forming, the lower end of the product 3 is formed into the skin grain part 3.2, but the forming temperature of the skin grain surface is not higher than 100 ℃, stress marks or uneven gloss are generated, the forming temperature of the high gloss surface needs to reach 160 ℃ instantly, a welding line cannot be eliminated, the front mold core is split into the first mold core piece 1.1 and the second mold core piece 1.2, the top end of the first mold core piece 1.1 can form the conformal water cavity 1.12, the side wall of the first mold core piece 1.1 forms the mold hot water path 1.13, water vapor is injected into the cavity during mold assembly, the flow of the mold, 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, the temperature in the mold cavity can reach 160 ℃ instantly, the upper end of the high gloss surface and the lower end of the mold cavity can be almost in the mold cavity, the water phase mark can be removed, the temperature of the product can be almost matched with the water vapor at the upper end of the surface 3, the high temperature of the product is not in the mold hot water path 1.13, the water grain surface can be nearly matched with the upper end of the skin grain surface, the surface and the surface is nearly equal to the upper end of the surface, the surface of the product, the high temperature of the product can be formed into the skin grain surface, and the product has the uniform temperature, and the surface, the surface is nearly has the uniform temperature marks, and the surface 3, and the surface can be subjected to have the uniform quality surface 3, and the surface, and has the surface quality surface 3.
The foregoing description is only of the preferred embodiments of the invention, and all changes and modifications that come within the meaning and range of equivalency of the structures, features and principles of the invention are therefore intended to be embraced therein.
Claims (10)
1. The common molding technology of the upper highlight surface and the leather pattern surface of the product comprises a front mold and a rear mold, and is 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 conformal water cavity is formed at the top end of the first die core piece and distributed at the upper end of the periphery of the cavity, the conformal water cavity is in a ring shape matched with the periphery of the cavity, a die water channel is arranged on the side wall of the first die core piece and distributed at the lower end of the periphery of the cavity, and the second die core piece is arranged at the upper end of the first die core piece so as to seal the conformal water cavity of the first die core piece, 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 leather grain surface;
when the mold is closed, the rear mold insert stretches into the cavity, steam is injected into the following-shaped water cavity before filling, flowing water is injected into the mold Wen Shuilu, the temperature of the steam enables the cavity of the highlight traceless surface to be quickly heated, the temperature of the flowing water enables the cavity of the dermatoglyph surface to be kept in a preset range, after filling, the upper end of a product is formed into the highlight traceless part, and the lower end of the product is formed into the dermatoglyph part;
the lower end of the first die core piece extends downwards to form an extension part, an extension waterway positioned below the die water channel is arranged on the extension part, and the extension waterway is distributed at the lower end of the periphery of the die cavity and is communicated with the die water channel;
because the width of the leather grain surface of the product is longer, an extension water way is additionally arranged, so that the mold water way is positioned at the upper layer, the extension water way is positioned at the lower layer, and the lower end of the periphery of the cavity is coated, so that the width of the leather grain surface of the product is adapted, the lower part of the periphery of the cavity can be quickly heated, and the mold is stable and uniform; the water vapor with higher temperature is injected into the conformal water cavity, the temperature of the water vapor is between 140 and 160 ℃, and the temperature of flowing water is between 70 and 80 ℃; after heat can be transferred to the upper end of die cavity periphery, partial heat also can be transferred to the lower extreme of die cavity periphery, consequently sets up extension, increases its size, and after absorbing heat, less to the temperature influence of the lower extreme of first mould benevolence spare to the temperature variation of the periphery lower extreme that makes the die cavity is little, thereby does not have stress mark or uneven production of gloss when can shaping dermatoglyph portion.
2. The co-molding technology of the upper high-gloss surface and the leather surface of the product according to claim 1, wherein the co-molding technology is characterized in that: an injection channel communicated with the conformal water cavity is arranged on the second die core piece of the front die core, and a flow dividing block positioned at a connecting port of the injection channel is arranged in the conformal water cavity.
3. The co-molding technology of the upper high-gloss surface and the leather surface of the product according to claim 2, which is characterized in that: and the shape-following water cavity is internally provided with flow choking blocks which are distributed symmetrically with the flow distributing blocks in circumference.
4. A co-molding technique for a high gloss surface and a leather surface of a product according to claim 3, wherein: 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 choke block, water vapor is injected into the injection channel during heating, and is discharged through the outflow channel after entering the conformal water channel, and cooling water is injected into the outflow channel during cooling, and is discharged through the injection channel after entering the conformal water channel.
5. The co-molding technology of the upper high-gloss surface and the leather surface of the product according to claim 1, wherein the co-molding technology is characterized in that: the lower extreme downwardly extending of first mould benevolence spare is formed with the extension, be equipped with the extension water route that is located the below of mould water route on the extension, extend the water route and distribute in the periphery lower extreme of die cavity to communicate with the mould water route.
6. The co-molding technology of the upper high-gloss surface and the leather surface of the product according to claim 1, wherein the co-molding technology is characterized in that: 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 technology of the upper high-gloss surface and the leather surface of the product according to claim 1, wherein the co-molding technology is characterized in that: and a plurality of heat insulation pads are arranged at the top end and the side wall of the second die core piece.
8. The co-molding technology of the upper high-gloss surface and the leather surface of the product according to claim 1, wherein the co-molding technology is characterized in that: the side wall of the second die core piece is provided with a cooling water channel, and the cooling water channel is distributed above the conformal water cavity.
9. The co-molding technology of the upper high-gloss surface and the leather surface of the product according to claim 1, wherein the co-molding technology is characterized in that: and the rear die is provided with an exhaust groove which is communicated with the die cavity.
10. The co-molding technology of the upper high-gloss surface and the leather surface of the product according to claim 1, wherein the co-molding technology is characterized in that: the rear mold core is also provided with a glue inlet communicated with the mold cavity, and the glue inlet is in a beveling shape.
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| 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 |
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| 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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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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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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 |