CN217373257U

CN217373257U - Stop bright injection mold of seal of line face

Info

Publication number: CN217373257U
Application number: CN202220851605.1U
Authority: CN
Inventors: 陈华忠
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-04-14
Filing date: 2022-04-14
Publication date: 2022-09-06
Anticipated expiration: 2032-04-14

Abstract

The utility model discloses an stop bright injection mold of seal of line face relates to the field of moulding plastics, including movable mould board, movable mould benevolence, fixed die plate and cover half benevolence, movable mould benevolence includes movable mould benevolence board and the fixed coreboard that sets up on movable mould benevolence board, and movable mould benevolence board is equipped with the control by temperature change water route with the surface of coreboard contact, and the cover half benevolence includes fixed mould benevolence board and die cavity board, and the cover half benevolence board is close to the concave caulking groove that is equipped with in surface of movable mould benevolence, and the exhaust passage who communicates with the caulking groove is seted up on the surface that movable mould benevolence was kept away from to the cover half benevolence board, and in the caulking groove was located to the die cavity board inlays, the die cavity board is the exhaust steel. The cavity plate for forming the pattern surface of the product is made of exhaust steel, air at the bottom of the microscopic pit of the pattern surface is exhausted out of the mold core by utilizing an exhaust steel microporous structure, the phenomenon that the pattern surface of the injection product is locally shiny due to air trapping is avoided, the core plate on the inner surface of the formed product is welded on the movable mold core plate by diffusion welding, and a temperature control water path is processed on the movable mold core plate, so that the problem that the injection product is deformed due to the temperature difference between the core plate and the movable mold core plate is solved.

Description

Stop bright injection mold of seal of line face

Technical Field

The utility model relates to a field of moulding plastics especially relates to an stop bright injection mold of seal of line face.

Background

The computer keyboard is a channel for inputting control information of character information into a computer, is the most main input equipment of the computer, and can input English letters, numbers, punctuations and the like into the computer through the keyboard so as to send commands, input data and the like to the computer. At present, computer keyboard shells and computer key caps are generally processed by injection molding. For a product with a pattern surface design on the outer surface, an exhaust system is only designed on a parting surface and a rear mold of the conventional pattern surface product, and air at the bottom of a microscopic pit of the pattern surface cannot be completely exhausted during injection molding, so that the surface of the product is not filled with glue after air trapping during injection molding, local bright marks are generated on the surface, and the appearance of the product is poor. Some current injection mold spaces can't design the control by temperature change water route. Thereby leading to mould glue the face temperature unbalance, the product is heated inequality when moulding plastics and is produced warpage easily.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an stop bright injection mold who prints of line face to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides an stop bright injection mold who marks of line face, includes movable mould board, movable mould benevolence, fixed die plate and cover half benevolence, the movable mould board middle part inlays and is equipped with movable mould benevolence, movable mould benevolence includes movable mould benevolence board and fixes the coreboard that sets up on movable mould benevolence board, movable mould benevolence board is equipped with the control by temperature change water route with the surface of coreboard contact, the fixed die plate middle part inlays and is equipped with the fixed mould benevolence, the cover half benevolence includes fixed mould benevolence board and die cavity board, the concave caulking groove that is equipped with in surface that the movable mould benevolence is close to movable mould benevolence to the fixed mould benevolence board, the exhaust passage who communicates with the caulking groove is seted up on the surface that movable mould benevolence was kept away from to the fixed mould benevolence board, the die cavity board inlays and locates in the caulking groove, the die cavity board is the exhaust steel. When in design, the cavity plate for injection molding of the whole pattern surface adopts high-hardness exhaust steel to manufacture the mold core, air at the bottom of the microscopic pit of the pattern surface can be thoroughly discharged, the surface is not filled with glue after air trapping when the product is injected, and bright printing of the pattern surface caused by air trapping can be thoroughly solved. The mold core is divided into a movable mold core plate and a core plate, a temperature control water path is processed on the divided surface, the two divided movable mold core plates and the core plate are welded together, the temperature control water path is designed in the small space volume of the mold core, and the problem that the mold core causes warping deformation of a pattern surface product due to temperature difference is solved. The cavity plate for forming the pattern surface of the product is made of exhaust steel, the exhaust steel is high-quality air-permeable steel, the interior of the exhaust steel is formed by connecting micro small holes, so that air or any gas can smoothly permeate and penetrate through the exhaust steel, the air at the bottom of the microscopic pit of the pattern surface is discharged out of the mold core by utilizing the microporous structure of the exhaust steel, and the phenomenon that the local brightness of the pattern surface of the injection product is generated due to trapped gas is avoided.

Furthermore, the movable mould core plate and the core plate are fixedly connected through diffusion welding. After the temperature control water path is processed, the movable mold core plate and the core plate are contacted with each other and kept for a period of time under certain temperature and pressure, the contact surface of the movable mold core plate and the core plate is locally subjected to plastic deformation under the action of the temperature and the pressure, the physical contact of the surfaces to be welded is enlarged, and the movable mold core plate and the core plate are tightly connected with each other by diffusion welding.

Furthermore, exhaust depressions are concavely arranged at the bottoms of the caulking grooves and are communicated with the exhaust channels in a one-to-one correspondence mode. Air at the bottom of the micro pit of the grained surface is discharged into the exhaust recess by utilizing the micro porous structure of the exhaust steel, and the air in the exhaust recess is discharged to the outside of the core plate through the exhaust channel.

Furthermore, through grooves are formed in the surface, away from the movable mold core plate, of the fixed mold core plate, and each exhaust passage is communicated with the through groove. A through groove which is thoroughly communicated from front to back is formed in the surface of the fixed die core plate in the linear direction, air at the bottom of the textured surface micro pit is discharged into the through groove after being discharged into the exhaust channel, and the air at the bottom of the textured surface micro pit is discharged out of the fixed die core plate through the exhaust channel.

Furthermore, the edge of the core plate is convexly provided with a first positioning block, and the edge of the fixed die core plate is concavely provided with a first positioning groove for the first positioning block to be inserted correspondingly one by one. The cavity plate is small in space volume and cannot be used for machining a first positioning groove, the first positioning groove is designed on the fixed die core plate, and a first positioning block can be inserted into the corresponding first positioning groove during die assembly. The fixed die core plate and the cavity plate are positioned through the caulking grooves, and the fixed die core plate and the core plate are quickly positioned through the matching of the first positioning block and the first positioning groove, so that the positioning accuracy of the fixed die core plate and the movable die core plate is ensured.

Further, the control by temperature change water route is snakelike water route, control by temperature change water route cross-section is the rectangle. The temperature control waterway is bent in a reciprocating manner to form a snake-shaped waterway, so that the temperature control waterway is prolonged, and the physical contact between the cooling medium in the temperature control waterway and the movable die core plate is enlarged.

Furthermore, a water inlet groove and a water outlet groove are formed in the surface, away from the core plate, of the movable mold core plate, two ends of the temperature control water path are respectively communicated with the water inlet groove and the water outlet groove, the water inlet groove and the water outlet groove are symmetrically arranged, the cross sections of the water inlet groove and the water outlet groove are circular, and the cross section of the temperature control water path is smaller than that of the water inlet groove. When the flow rate is kept unchanged, the flow velocity is increased when the sectional area of the pipeline is reduced, and the flow velocity is increased when the sectional area of the pipeline is increased. The velocity of flow grow when water gets into the control by temperature change water route from the intake antrum, and the velocity of flow diminishes when water gets into out the basin from the control by temperature change water route, and the intake antrum extends along vertical direction with going out the basin and is cylindric passageway, is convenient for once only process out control by temperature change water route, intake antrum and play basin through milling.

Furthermore, a second positioning block can be detachably arranged at the edge of the fixed die plate, a third positioning block can be detachably arranged at the edge of the moving die plate, a convex block is convexly arranged on the second positioning block, and an alignment groove for the convex block to be inserted is formed in the third positioning block. When the die is closed, the lug on the second positioning block can be inserted into the alignment groove on the third positioning block. The lug is matched with the alignment groove to position the fixed template and the movable template, and the second positioning block is matched with the third positioning block to quickly position the fixed template and the movable template, so that the fixed template and the movable template are accurately aligned.

Furthermore, the cavity plate is connected with the fixed mold core plate through fastening screws, and threaded holes corresponding to the fastening screws are formed in the cavity plate. The screw hole sets up in the one end that the movable mould benevolence board was kept away from to the die cavity board, and the one end that the movable mould benevolence board was kept away from to the die cavity board passes through fastening screw with the fixed mould benevolence board and links together, makes die cavity board demountable installation at the caulking groove, can pull down the die cavity board fast, is convenient for change other model products of production.

The utility model has the advantages that: the cavity plate of the grain surface of the formed product is made of exhaust steel, the exhaust steel is high-quality air-permeable steel, the interior of the exhaust steel is formed by connecting fine small holes, air or any gas can smoothly permeate and penetrate through the exhaust steel, the air at the bottom of the microscopic pit of the grain surface is discharged out of the die core by utilizing the microporous structure of the exhaust steel, the phenomenon that the grain surface of the injection product is locally lightened due to air trapping is avoided, the core plate on the inner surface of the formed product is welded on the movable die core plate by diffusion welding, a temperature control water path is processed on the movable die core plate, the core plate and the movable die core plate are cooled by the temperature control water path, and the problem that the injection product is deformed due to the temperature difference of the die is solved.

Drawings

The figures further illustrate the invention, but the embodiments in the figures do not constitute any limitation of the invention.

Fig. 1 is a schematic structural view of a movable mold core and a fixed mold core according to an embodiment of the present invention;

fig. 2 is a schematic structural view of an injection mold for preventing bright prints on a grained surface according to an embodiment of the present invention;

fig. 3 is a perspective view of an injection mold for preventing bright prints on a grained surface according to an embodiment of the present invention;

fig. 4 is a half-sectional view of an injection mold for preventing bright prints on a grained surface according to an embodiment of the present invention;

fig. 5 is an enlarged view of a portion a of a semi-sectional view according to an embodiment of the present invention;

fig. 6 is a schematic structural view of a movable mold core plate according to an embodiment of the present invention.

The labels in the figure are: the die core plate comprises a fixed die plate 1, a fixed die core plate 21, a die cavity plate 22, a movable die plate 3, a movable die core plate 41, a core plate 42, an exhaust channel 5, a temperature control waterway 6, a water inlet groove 71, a water outlet groove 72, an exhaust recess 8, a first positioning block 9, a first positioning groove 10, a through groove 11, a second positioning block 12 and a third positioning block 13.

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present.

Example 1

As shown in fig. 1-6, an injection mold for preventing bright prints on a grain surface according to an embodiment of the present invention includes a movable mold plate, a movable mold core, a fixed mold plate, and a fixed mold core, wherein the movable mold core is embedded in the middle of the movable mold plate, the movable mold core includes a movable mold core plate and a core plate fixedly disposed on the movable mold core plate, a temperature control water path is disposed on a surface of the movable mold core plate contacting the core plate, the temperature control water path is a serpentine water path, the core plate has a plurality of molding regions, the temperature control water paths correspond to the molding regions one by one, the fixed mold core is embedded in the middle of the fixed mold plate, the fixed mold core includes a fixed mold core plate and a cavity plate, the core plate and the cavity plate in this embodiment cooperate to form keys of a notebook computer, the surface of the fixed mold core plate close to the movable mold core is recessed with an insert groove, and an exhaust passage communicated with the insert groove is disposed on a surface of the fixed mold core plate far from the movable mold core, the cavity plate is detachably embedded in the embedding groove through a fastening screw, a threaded hole corresponding to the fastening screw is formed in the surface of the cavity plate, and the cavity plate is made of PM-35 exhaust steel. When in design, the cavity plate for injection molding of the whole grain surface adopts high-hardness PM-35 exhaust steel to manufacture the mold core, so that air at the bottom of the microcosmic pit of the grain surface can be thoroughly discharged, the phenomenon that the surface of a product is not filled with glue after air trapping during injection molding is avoided, and bright printing of the grain surface caused by the air trapping can be thoroughly solved. The mold core is divided into a movable mold core plate and a core plate, a temperature control water path is processed on the divided surface, the two divided movable mold core plates and the core plate are welded together, the temperature control water path is designed in the small space volume of the mold core, and the problem that the mold core causes warping deformation of a pattern surface product due to temperature difference is solved.

After the temperature control water path is processed, the movable mold core plate and the core plate are contacted with each other under certain temperature and pressure and kept for a period of time, the contact surface of the movable mold core plate and the core plate is locally subjected to plastic deformation under the action of the temperature and the pressure, and the movable mold core plate and the core plate are fixedly connected together through diffusion welding. The physical contact of the surfaces to be welded is enlarged and diffusion welding is adopted to tightly connect the movable core plate and the core plate.

The caulking groove tank bottom is sunken to be equipped with the exhaust sunken, the exhaust sunken and the shaping district one-to-one, the exhaust sunken and exhaust passage one-to-one and intercommunication. Air at the bottom of the textured micro pit is discharged into the exhaust recess by utilizing the micro porous structure of the PM-35 exhaust steel, and the air in the exhaust recess is discharged to the outside of the cavity plate through the exhaust channel.

The surface of the fixed die core plate, which is far away from the movable die core plate, is provided with through grooves, and each exhaust passage is communicated with the through grooves. A through groove which is thoroughly communicated from front to back is formed in the surface of the fixed die core plate in the linear direction, air at the bottom of the textured surface micro pit is discharged into the through groove after being discharged into the exhaust channel, and the air at the bottom of the textured surface micro pit is discharged out of the fixed die core plate through the exhaust channel.

The surface of the movable die core plate away from the core plate is provided with a water inlet groove and a water outlet groove, two ends of a temperature control water path are respectively communicated with the water inlet groove and the water outlet groove, the extending direction of the temperature control water path is horizontally arranged, the vertical cross section of the temperature control water path is rectangular, the extending direction of the water inlet groove and the water outlet groove is vertically arranged, the horizontal cross sections of the water inlet groove and the water outlet groove are both circular, the water inlet groove and the water outlet groove extend along the vertical direction to form a cylindrical channel, the water inlet groove and the water outlet groove are symmetrically arranged, and the cross section of the temperature control water path is smaller than that of the water inlet groove. When the flow rate is kept unchanged, the flow velocity is increased when the sectional area of the pipeline is reduced, and the flow velocity is increased when the sectional area of the pipeline is increased. The flow rate of water is increased when entering the temperature control water channel from the water inlet channel, the flow rate of water is decreased when entering the water outlet channel from the temperature control water channel, and the temperature control water channel, the water inlet channel and the water outlet channel are processed by adopting a milling process.

The edge of the core plate is convexly provided with a first positioning block, and the core plate is concavely provided with a first positioning groove for the first positioning block to be inserted correspondingly one by one. The cavity plate is small in space volume and cannot be used for machining a first positioning groove, the first positioning groove is designed on the fixed die core plate, and a first positioning block can be inserted into the corresponding first positioning groove during die assembly. The fixed die core plate and the cavity plate are positioned through the caulking grooves, and the fixed die core plate and the core plate are quickly positioned through the matching of the first positioning block and the first positioning groove, so that the positioning accuracy of the fixed die core plate and the movable die core plate is ensured.

The fixed die plate is characterized in that a second positioning block is detachably arranged at the edge of the fixed die plate, a third positioning block is detachably arranged at the edge of the movable die plate, a convex block is convexly arranged on the second positioning block, and a positioning groove for the convex block to be inserted is formed in the third positioning block. When the die is closed, the lug on the second positioning block can be inserted into the alignment groove on the third positioning block. The lug is matched with the alignment groove to position the fixed template and the movable template, and the fixed template and the movable template are quickly positioned through the matching of the second positioning block and the third positioning block, so that the fixed template and the movable template are accurately aligned.

Example 2

The utility model provides an injection mold for eliminating bright seal of grained surface, which comprises a movable mold plate, a movable mold core, a fixed mold plate and a fixed mold core, wherein the movable mold core is embedded in the middle of the movable mold plate, the movable mold core comprises a movable mold core plate and a core plate fixedly arranged on the movable mold core plate, the surface of the movable mold core plate contacting with the core plate is provided with a temperature control water path, the temperature control water path is a spiral water path, the core plate is provided with a plurality of forming areas, the temperature control water path corresponds to the forming areas one by one, the fixed mold core is embedded in the middle of the fixed mold plate, the fixed mold core comprises a fixed mold core plate and a cavity plate, the core plate and the cavity plate in the embodiment are matched to form a key cap of a notebook computer, the surface of the fixed mold core plate close to the movable mold core is concavely provided with an embedded groove, the surface of the fixed mold core plate far away from the movable mold core is provided with an exhaust passage communicated with the embedded groove, the cavity plate is detachably embedded in the embedding groove through a fastening screw, a threaded hole corresponding to the fastening screw is formed in the surface of the cavity plate, and the cavity plate is made of PM-35 exhaust steel.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The utility model provides an end bright injection mold who prints of line face which characterized in that: including movable mould board, movable mould benevolence, fixed die plate and cover half benevolence, the movable mould benevolence is inlayed at the movable mould board middle part and is equipped with movable mould benevolence, movable mould benevolence includes movable mould benevolence board and the fixed core board that sets up on movable mould benevolence board, the surface of movable mould benevolence board and core board contact is equipped with the control by temperature change water route, the fixed die plate middle part is inlayed and is equipped with fixed mould benevolence, the cover half benevolence includes fixed mould benevolence board and die cavity board, the concave caulking groove that is equipped with in surface that the movable mould benevolence board is close to, the exhaust passage who communicates with the caulking groove is seted up on the surface that movable mould benevolence was kept away from to fixed mould benevolence board, the die cavity board inlays and locates in the caulking groove, the die cavity board is the exhaust steel.

2. The injection mold capable of avoiding the bright print of the grained surface according to claim 1, characterized in that: the movable mould core plate is fixedly connected with the core plate through diffusion welding.

3. The injection mold capable of avoiding the bright prints on the grained surfaces of the plastic part according to claim 1, wherein: and exhaust depressions are concavely arranged at the bottoms of the caulking grooves and are communicated with the exhaust channels in a one-to-one correspondence manner.

4. The injection mold capable of avoiding the bright prints on the grained surfaces of the plastic part according to claim 1, wherein: the surface of the fixed die core plate, which is far away from the movable die core plate, is provided with through grooves, and each exhaust passage is communicated with the through grooves.

5. The injection mold capable of avoiding the bright prints on the grained surfaces of the plastic part according to claim 1, wherein: the edge of the core plate is convexly provided with a first positioning block, and the edge of the fixed die core plate is concavely provided with a first positioning groove for the first positioning block to be inserted in one-to-one correspondence.

6. The injection mold capable of avoiding the bright prints on the grained surfaces of the plastic part according to claim 1, wherein: the temperature control waterway is a snakelike waterway, and the section of the temperature control waterway is rectangular.

7. The injection mold capable of avoiding the bright prints on the grained surfaces of the plastic part according to claim 1, wherein: the surface of the movable die core plate, which is far away from the core plate, is provided with a water inlet groove and a water outlet groove, two ends of the temperature control water path are respectively communicated with the water inlet groove and the water outlet groove, the water inlet groove and the water outlet groove are symmetrically arranged, the cross sections of the water inlet groove and the water outlet groove are circular, and the cross section of the temperature control water path is smaller than that of the water inlet groove.

8. The injection mold capable of avoiding the bright prints on the grained surfaces of the plastic part according to claim 1, wherein: the fixed die plate is characterized in that a second positioning block is detachably arranged at the edge of the fixed die plate, a third positioning block is detachably arranged at the edge of the movable die plate, a convex block is convexly arranged on the second positioning block, and a positioning groove for the convex block to be inserted is formed in the third positioning block.

9. The injection mold capable of avoiding the bright prints on the grained surfaces of the plastic part according to claim 1, wherein: the cavity plate is connected with the fixed mold core plate through fastening screws, and threaded holes corresponding to the fastening screws are formed in the cavity plate.