Split type high-precision injection mold

Abstract

The utility model discloses a split type high-precision injection mold which comprises a first mold and a second mold, and a guide pillar assembly and a positioning structure are arranged between the first mold and the second mold; the first mold comprises a first molding plate and a first split type molding concave block, the second mold comprises a second molding plate and a second split type molding convex block, and a product molding cavity is formed when the first split type molding concave block and the second split type molding convex block are assembled. By arranging the first split type forming concave block, forming concave cavities of different specifications and sizes can be formed, and by arranging the second split type forming convex block in a matched mode, forming protrusions of different specifications and sizes can be formed according to requirements, so that shell products of different specifications and sizes can be produced, and applicability is improved; when one block is abraded, single replacement can be carried out, overall replacement is not needed, the maintenance cost is reduced, the placement space is reduced, and the flexibility is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic molds, in particular to a split high-precision injection mold. Background Art

[0002] At present, most electronic product shells are molded by injection molding and produced in large quantities. Figure 5 The plastic housing product shown includes an end panel and a plurality of side walls arranged on the end panel; Figure 5 The molds of the plastic shell products shown above mostly use molding cavities and molding protrusions to realize the production of plastic shell products. However, the existing molds are mostly fixed in size and cannot be disassembled and assembled in a split manner according to the production specifications of the shell products. They need to be customized in size, which has high customization costs and takes up storage space. Moreover, when the molding cavity and molding protrusion are worn, they need to be replaced as a whole, which has high maintenance costs. Utility Model Content

[0003] This utility model is aimed at the current technical deficiencies and provides a split high-precision injection mold, which aims to solve the technical problems in the existing technology that the molding protrusions and molding concave blocks of plastic molds are mostly integrated structures, cannot be split and disassembled, cannot be used to form molding cavities for products of different specifications and sizes, have low applicability, and have high maintenance costs.

[0004] The technical solution adopted by the present invention to achieve the above-mentioned purpose is:

[0005] A split high-precision injection mold includes a first mold and a second mold, with a guide column assembly and a positioning structure provided between the first mold and the second mold; the first mold includes a first molding plate, and the second mold includes a second molding plate; the first molding plate is provided with a first concave cavity, in which a first split-molding concave block is provided; the second molding plate is provided with a second concave cavity, in which a second split-molding convex block is provided, and the first split-molding concave block and the second split-molding convex block form a product molding cavity when the mold is closed; the first mold is also provided with a glue injection port and an ejector pin structure; both the first mold and the second mold are also provided with a cooling structure.

[0006] As a further improvement, the guide column assembly includes multiple guide columns and multiple guide sleeves, the multiple guide columns are respectively arranged on the four corners of the first mold, the multiple guide sleeves are respectively arranged on the four corners of the second mold, and the guide sleeves are respectively arranged on the outer sides of the guide columns; the positioning structure includes a first annular protrusion and a first annular groove, the first annular protrusion is arranged on the first forming plate, the first annular groove is arranged on the second forming plate, and the first annular protrusion and the first annular groove are used for matching positioning connection during mold closing.

[0007] As a further improvement, the first annular protrusion is provided with a bevel 1 and a second annular protrusion, and the bevel 1 is arranged outside the edge of the first annular protrusion; the second annular protrusion is arranged on the first annular protrusion; the first annular groove is provided with a second annular groove and a bevel 2, and the second annular groove is provided with a third annular protrusion, and the bevel 2 is arranged on the edge of the third annular protrusion, and the second annular groove is arranged below the first annular groove, and the second annular protrusion is matched and connected with the second annular groove when the mold is closed, and the bevel 1 and the bevel 2 are matched and fitted and connected.

[0008] As a further improvement, the first split-type molding concave block includes a central molding concave block and two edge molding concave blocks, and the two edge molding concave blocks are arranged at both ends of the central molding concave block in a mirror-image manner; the edge molding concave block and the central molding concave block are each provided with one or more adjustment molding concave blocks, and the central molding concave block and the adjustment molding concave block are both provided with molding grooves, and the two edge molding concave blocks are both provided with first molding grooves; the central molding concave block, the edge molding concave block and the adjustment molding concave block are all provided with sealing grooves, and the sealing grooves are connected to form an annular sealing groove.

[0009] As a further improvement, the first cavity is provided with a central threaded hole group, the central threaded hole group includes two mirror-opposite threaded holes, the two threaded holes are arranged on both sides of the injection port, the central forming concave block is arranged on the central threaded hole group, and the central forming concave block is provided with a countersunk hole, the countersunk holes are provided with screws, and the screws are respectively arranged to be threadedly connected with the threaded holes.

[0010] As a further improvement, the first cavity is also provided with two slide grooves, each of which is provided with an insertion port, and the two slide grooves are respectively arranged above and below the injection port, and the edge molding concave block and the adjustment molding concave block are both provided with an insertion slider, and the insertion slider is arranged in the slide groove; the two end faces of the center molding concave block and one end face of the adjustment molding concave block are both provided with two mirror-imaged buckle hooks; the other end face of the adjustment molding concave block and the end face of the edge molding concave block are both provided with two mirror-imaged buckle holes, and the buckle holes are both provided with orifices.

[0011] As a further improvement, the second split-type molded protrusion includes a central molded protrusion and two edge molded protrusions, and the two edge molded protrusions are arranged in a mirror-image manner on the two end faces of the central molded protrusion; one or more adjustment molded protrusions are provided between the central molded protrusion and the edge molded protrusion, and the central molded protrusion and the adjustment molded protrusion are both provided with a molding protrusion, and the two edge molded protrusions are both provided with a first molding protrusion; the central molded protrusion, the edge molded protrusion and the adjustment molded protrusion are all provided with a sealing protrusion, and the sealing protrusions are connected to form an annular sealing protrusion.

[0012] As a further improvement, the second cavity is provided with multiple groups of threaded holes arranged in a row, and each threaded hole group is composed of two threaded holes; the center forming protrusion, edge forming protrusion and adjustment forming protrusion are each provided with two mounting seats, and each mounting seat is provided with a countersunk hole, and each countersunk hole is provided with a screw, and the screw is used for threaded connection with the threaded hole.

[0013] Compared with the prior art, the above one or more technical solutions in the split high-precision injection mold provided by the embodiment of the present invention have at least one of the following technical effects:

[0014] The utility model provides an adjustment molding concave block for adding according to demand, thereby constituting a first split molding concave block of different specifications and sizes; the adjustment molding protrusion is provided so as to increase or decrease according to demand, thereby constituting a second split molding protrusion of different specifications and sizes according to demand, the first split molding concave block and the second split molding protrusion are used to produce shell products of different specifications and sizes, thereby improving applicability; the first split molding concave block or the second split molding protrusion can be freely combined, and when one of them is worn, it can be replaced alone without replacing the entire piece, thereby reducing maintenance costs, reducing placement space, and improving flexibility; the buckle hook and the buckle hole are provided to realize the rapid combination and adjustment between the center molding concave block, the edge molding concave block and the adjustment molding concave block, thereby facilitating rapid installation or disassembly; the positioning structure is provided for multiple positioning and multiple sealing, thereby ensuring the molding quality and effect of subsequent products. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0016] Figure 1 This is a schematic diagram of the overall structure of the split high-precision injection mold of this embodiment;

[0017] Figure 2 Schematic diagram of the structure of the first mold of this embodiment;

[0018] Figure 3 Schematic diagram of the structure of the second mold of this embodiment;

[0019] Figure 4 A half-section schematic diagram of the positioning structure of this embodiment after mold closing;

[0020] Figure 5 FIG. 1 is a structural diagram of the plastic housing product of this embodiment. DETAILED DESCRIPTION

[0021] The following description is merely a preferred embodiment of the present invention and does not limit the scope of protection of the present invention.

[0022] For example, see the attached Figures 1 to 4 A split high-precision injection mold 1 includes a first mold 2 and a second mold 3, with a guide column assembly 4 and a positioning structure 5 provided between the first mold 2 and the second mold 3; the first mold 2 includes a first molding plate 6, and the second mold 3 includes a second molding plate 7; the first molding plate 6 is provided with a first concave cavity 60, in which a first split molding concave block 61 is provided; the second molding plate 7 is provided with a second concave cavity 70, in which a second split molding convex block 71 is provided, and the first split molding concave block 61 and the second split molding convex block 71 form a product molding cavity when the mold is closed; the first mold 2 is also provided with a glue injection port 20 and an ejector pin structure 21; the first mold 2 and the second mold 3 are also provided with a cooling structure, the cooling structure includes a cooling pipe, the cooling pipe is provided with a water inlet and a water outlet, and the ejector pin structure 21 includes a plurality of ejector blocks and a spring.

[0023] The guide column assembly 4 includes multiple guide columns and multiple guide sleeves. The multiple guide columns are respectively arranged on the four corners of the first mold 2, and the multiple guide sleeves are respectively arranged on the four corners of the second mold 3. The guide sleeves are respectively arranged on the outer sides of the guide columns; the positioning structure 5 includes a first annular protrusion 50 and a first annular groove 51. The first annular protrusion 50 is arranged on the first molding plate 6, and the first annular groove 51 is arranged on the second molding plate 7. The first annular protrusion 50 and the first annular groove 51 are used for matching positioning connection during mold closing.

[0024] The first annular protrusion 50 is provided with a bevel 1 500 and a second annular protrusion 501, and the bevel 1 500 is arranged outside the edge of the first annular protrusion 50; the second annular protrusion 501 is arranged on the first annular protrusion 50; the first annular groove 511 is provided with a second annular groove 511 and a bevel 2 510, and the second annular groove 511 is provided with a third annular protrusion, and the bevel 2 510 is arranged on the edge of the second annular protrusion, and the second annular groove 511 is arranged below the first annular groove 51. When the mold is closed, the second annular protrusion 501 is matched and connected with the second annular groove 511, and the bevel 1 500 is matched and fitted with the bevel 2 510. The positioning structure 5 is used for positioning and sealing to ensure the subsequent molding quality and effect.

[0025] The first split molding concave block 61 includes a central molding concave block 610 and two edge molding concave blocks 611, and the two edge molding concave blocks 611 are arranged at both ends of the central molding concave block 610 in a mirror-image manner; the edge molding concave block 611 and the central molding concave block 610 are each provided with one or more adjustment molding concave blocks 612, and the central molding concave block 610 and the adjustment molding concave block 612 are both provided with molding grooves, and the two edge molding concave blocks 611 are both provided with first molding grooves; the central molding concave block 610 10. Both the edge molding concave block 611 and the adjustment molding concave block 612 are provided with a sealing groove 613. The sealing groove 613 is connected to form an annular sealing groove. The adjustment molding concave block 612 is used to be added according to needs, thereby forming a first split molding concave block 61 of different specifications and sizes, and is used in conjunction with the second split molding protrusion 71 to produce shell products of different specifications, thereby improving applicability. When one part of it is worn, it can be replaced separately to reduce maintenance costs. The center molding concave block 610 is also provided with a pinhole.

[0026] The first cavity 60 is provided with a central threaded hole group, and the central threaded hole group includes two mirror-opposite threaded holes. The two threaded holes are arranged on both sides of the injection port 20. The central forming recessed block 610 is arranged on the central threaded hole group, and the central forming recessed block 610 is provided with a countersunk hole. The countersunk holes are all provided with screws, and the screws are respectively arranged to be threadedly connected with the threaded holes.

[0027] The first cavity 60 is also provided with two slide grooves 600, each of which is provided with an insertion port. The two slide grooves 600 are respectively arranged above and below the injection port 20, and the edge molding concave block 611 and the adjustment molding concave block 612 are both provided with an insertion slider, and the insertion slider is arranged in the slide groove 600; the two end faces of the center molding concave block 610 and one end face of the adjustment molding concave block 612 are both provided with two mirror-imaged buckle hooks 614; the other end face of the adjustment molding concave block 612 and the end face of the edge molding concave block 611 are both provided with two mirror-imaged buckle holes 615, and the buckle holes 615 are both provided with orifices. The buckle hooks 614 and the buckle holes 615 are used to realize the rapid combination and adjustment between the center molding concave block 610, the edge molding concave block 611 and the adjustment molding concave block 612, which is convenient for rapid installation or disassembly, and the slide groove 600 is convenient for rapid positioning.

[0028] The second split-type forming protrusion 71 includes a central forming protrusion 710 and two edge forming protrusions 711, and the two edge forming protrusions 711 are arranged on the two end surfaces of the central forming protrusion 710 in a mirror-image manner; one or more adjustment forming protrusions 712 are provided between the central forming protrusion 710 and the edge forming protrusion 711, and the adjustment forming protrusions 712 can be increased or decreased according to needs, so that second split-type forming protrusions 71 of different specifications and sizes can be formed according to needs, which is used to produce shell products of different specifications and sizes, thereby improving applicability, and the second split-type forming protrusions 71 can be freely combined, and when one of them is worn, it can be replaced alone. The center molding protrusion 710 and the adjustment molding protrusion 712 are both provided with molding protrusions, and the two edge molding protrusions 711 are both provided with first molding protrusions. The molding protrusions and the first molding protrusions are used to cooperate with the molding grooves and the first molding grooves to form a product molding cavity for the molding of the shell product. The center molding protrusion 710, the edge molding protrusions 711 and the adjustment molding protrusions 712 are all provided with sealing protrusions 713. The sealing protrusions 713 are connected to form an annular sealing protrusion. The annular sealing protrusion is used for the matching connection of the annular sealing groove 613 when the mold is closed to improve the sealing performance, thereby ensuring the molding quality of the shell product.

[0029] The second concave cavity 70 is provided with multiple groups of threaded hole groups 700 arranged in a row, and the threaded hole groups 700 are each composed of two threaded holes; the central forming protrusion, the edge forming protrusion 711 and the adjustment forming protrusion 712 are each provided with two mounting seats, and the mounting seats are each provided with a countersunk hole, and the countersunk hole is each provided with a screw, and the screw is used for threaded connection with the threaded hole. The threaded hole group 700 is used to adjust the size specifications of the second split forming protrusion 71 according to needs, so that it can be used for the molding processing of shell products of different specifications and sizes, thereby improving applicability.

[0030] The utility model provides an adjustment molding concave block for adding according to demand, thereby constituting a first split molding concave block of different specifications and sizes; the adjustment molding protrusion is provided so as to increase or decrease according to demand, thereby constituting a second split molding protrusion of different specifications and sizes according to demand, the first split molding concave block and the second split molding protrusion are used to produce shell products of different specifications and sizes, thereby improving applicability; the first split molding concave block or the second split molding protrusion can be freely combined, and when one of them is worn, it can be replaced alone without replacing the entire piece, thereby reducing maintenance costs, reducing placement space, and improving flexibility; the buckle hook and the buckle hole are provided to realize the rapid combination and adjustment between the center molding concave block, the edge molding concave block and the adjustment molding concave block, thereby facilitating rapid installation or disassembly; the positioning structure is provided for multiple positioning and multiple sealing, thereby ensuring the molding quality and effect of subsequent products.

[0031] The present invention is not limited to the above-mentioned embodiments. Other split-type high-precision injection molds obtained by using the same or similar structures or devices as the above-mentioned embodiments of the present invention are within the protection scope of the present invention.

Claims

1. A split high-precision injection mold, characterized by: The high-precision injection mold includes a first mold and a second mold, and a guide column assembly and a positioning structure are provided between the first mold and the second mold; the first mold includes a first molding plate, and the second mold includes a second molding plate; the first molding plate is provided with a first concave cavity, and a first split molding concave block is provided in the first concave cavity; the second molding plate is provided with a second concave cavity, and a second split molding convex block is provided in the second concave cavity, and the first split molding concave block and the second split molding convex block form a product molding cavity when the mold is closed; the first mold is also provided with a glue injection port and a ejector pin structure; both the first mold and the second mold are also provided with a cooling structure.

2. The split high-precision injection mold according to claim 1, characterized in that: The guide column assembly includes multiple guide columns and multiple guide sleeves, the multiple guide columns are respectively arranged on the four corners of the first mold, the multiple guide sleeves are respectively arranged on the four corners of the second mold, and the guide sleeves are respectively arranged on the outer sides of the guide columns; the positioning structure includes a first annular protrusion and a first annular groove, the first annular protrusion is arranged on the first forming plate, and the first annular groove is arranged on the second forming plate, and the first annular protrusion and the first annular groove are used for matching positioning connection during mold closing.

3. The split high-precision injection mold according to claim 2, characterized in that: The first annular protrusion is provided with a bevel 1 and a second annular protrusion, and the bevel 1 is arranged outside the edge of the first annular protrusion; the second annular protrusion is arranged on the first annular protrusion; the first annular groove is provided with a second annular groove and a bevel 2, and the second annular groove is provided with a third annular protrusion, and the bevel 2 is arranged on the edge of the third annular protrusion. The second annular groove is arranged below the first annular groove, and the second annular protrusion is matched and connected with the second annular groove when the mold is closed, and the bevel 1 and the bevel 2 are matched and fitted together.

4. The split high-precision injection mold according to claim 3, characterized in that: The first split-type forming concave block includes a central forming concave block and two edge forming concave blocks, and the two edge forming concave blocks are arranged at both ends of the central forming concave block in a mirror-image manner; the edge forming concave block and the central forming concave block are each provided with one or more adjustment forming concave blocks, and the central forming concave block and the adjustment forming concave block are both provided with forming grooves, and the two edge forming concave blocks are both provided with first forming grooves; the central forming concave block, the edge forming concave block and the adjustment forming concave block are all provided with sealing grooves, and the sealing grooves are connected to form an annular sealing groove.

5. The split high-precision injection mold according to claim 4, characterized in that: The first cavity is provided with a central threaded hole group, and the central threaded hole group includes two mirror-opposite threaded holes. The two threaded holes are arranged on both sides of the injection port. The central forming concave block is arranged on the central threaded hole group, and the central forming concave block is provided with a countersunk hole. The countersunk holes are all provided with screws, and the screws are respectively arranged to be threadedly connected with the threaded holes.

6. The split high-precision injection mold according to claim 5, characterized in that: The first cavity is also provided with two slide grooves, each of which is provided with an insertion port, and the two slide grooves are respectively arranged above and below the injection port, and the edge forming concave block and the adjustment forming concave block are both provided with an insertion slider, and the insertion slider is arranged in the slide groove; the two end faces of the center forming concave block and one end face of the adjustment forming concave block are both provided with two mirror-imaged buckle hooks; the other end face of the adjustment forming concave block and the end face of the edge forming concave block are both provided with two mirror-imaged buckle holes, and the buckle holes are both provided with orifices.

7. The split high-precision injection mold according to claim 6, characterized in that: The second split-type forming protrusion includes a central forming protrusion and two edge forming protrusions, and the two edge forming protrusions are arranged in a mirror-image manner on the two end surfaces of the central forming protrusion; one or more adjustment forming protrusions are provided between the central forming protrusion and the edge forming protrusion, and the central forming protrusion and the adjustment forming protrusion are both provided with forming protrusions, and the two edge forming protrusions are both provided with first forming protrusions; the central forming protrusion, the edge forming protrusion and the adjustment forming protrusion are all provided with sealing protrusions, and the sealing protrusions are connected to form an annular sealing protrusion.

8. The split high-precision injection mold according to claim 7, characterized in that: The second concave cavity is provided with multiple groups of threaded holes arranged in a row, and each threaded hole group is composed of two threaded holes; the central forming protrusion, the edge forming protrusion and the adjustment forming protrusion are each provided with two mounting seats, and each mounting seat is provided with a countersunk hole, and each countersunk hole is provided with a screw, and the screw is used for threaded connection with the threaded hole.

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