Large-size mold assembly structure

Abstract

The utility model discloses a large -size mould assembly structure, including upper mould and lower mould, its characterized in that: upper mould and or lower mould are provided with cavity, the cavity is received with the core, the cavity has first side wall and second side wall, first side wall with second side wall is adjacent, still include first wedge and second wedge, first wedge with second wedge are located respectively first side wall and second side wall opposite side wall and the core between, and first wedge with second wedge can respectively with first side wall and second side wall the direction extrusion of core to make the core close to first side wall and second side wall on, to fix and position through first side wall and second side wall to the core, and then more benefit the processing and assembly of mould.

Description

Technical Field

[0001] This utility model belongs to the field of injection mold technology, specifically relating to a large-size mold assembly structure. Background Technology

[0002] Figure 1 An automotive tube component 50 was showcased, featuring a hollow structure 51. The significant height of the component and the substantial depth of the hollow structure 51 necessitate an increase in the depth and size of the corresponding mold cavity, consequently complicating the fabrication of the mold's cooling channels. Furthermore, the current method of machining the upper and lower cavities directly on the upper and lower molds, followed by injection molding via a screw extruder after mold assembly, significantly increases mold costs due to the deep cavity. Moreover, molds typically have a limited lifespan, requiring the entire mold structure to be scrapped upon reaching the end of its lifespan, further increasing costs. To address these issues, our company developed an injection mold for producing this automotive tube component 50. This mold employs a separate assembly structure for the mold core and mold assembly to reduce manufacturing complexity. However, the large size of the mold core for producing this component presents a challenge in assembling the mold core and mold assembly. Summary of the Invention

[0003] The purpose of this utility model is to provide a large-size mold assembly structure, in which the mold core is detachably set inside the mold. On the one hand, processing water channels on the mold core and the mold shell separately will reduce the processing difficulty of the water channels. On the other hand, when the detachable mold core reaches the end of its service life, the mold core can be directly replaced without replacing the whole mold, thus reducing maintenance and repair costs.

[0004] To solve the above-mentioned technical problems, the purpose of this utility model is achieved as follows: A large-size mold assembly structure includes an upper mold and a lower mold, characterized in that: the upper mold and / or the lower mold are provided with a cavity, and a mold core is received in the cavity; the cavity has a first sidewall and a second sidewall, the first sidewall and the second sidewall being adjacent to each other; it also includes a first wedge block and a second wedge block, the first wedge block and the second wedge block being respectively located between the sidewall opposite the first sidewall and the second sidewall and the mold core, and the first wedge block and the second wedge block can respectively press the mold core towards the direction of the first sidewall and the second sidewall, so that the mold core is tightly attached to the first sidewall and the second sidewall.

[0005] Based on the above scheme and as a preferred embodiment of the above scheme: at least at the corner where the first sidewall and the second sidewall meet, an avoidance gap is provided.

[0006] Based on the above scheme and as a preferred embodiment of the above scheme: both the cavity and the mold core are rectangular, and each has a first sidewall, a second sidewall, a third sidewall and a fourth sidewall. The first wedge block and the second wedge block are respectively located between the third sidewall, the fourth sidewall and the sidewall corresponding to the mold core.

[0007] Based on the above scheme and as a preferred embodiment of the above scheme: the third sidewall and the fourth sidewall are respectively provided with a first mounting groove and a second mounting groove.

[0008] Based on the above scheme and as a preferred embodiment of the above scheme: both the third sidewall and the fourth sidewall are provided with mounting grooves.

[0009] Based on the above scheme and as a preferred embodiment of the above scheme, it further includes a locking bolt, which passes through the wedge block and is threaded to the bottom of the cavity.

[0010] Based on the above scheme and as a preferred embodiment of the above scheme: two mold cores are centrally symmetrically received within the cavity, and the adjacent surfaces of the two mold cores are in contact with each other.

[0011] The outstanding and beneficial technical effects of this utility model compared with the prior art are as follows: In this application, a positioning surface is formed by the first sidewall and the second sidewall. A wedge block is used and installed between the sidewall opposite the first sidewall and the mold core. Then, through the extrusion of the wedge surface of the wedge block, the mold core is pushed to stick tightly to the first sidewall and the second sidewall. Thus, the mold core is fixed and positioned by the first sidewall and the second sidewall. Compared with the traditional method of ensuring assembly accuracy by using extremely small tolerances, this embodiment can amplify the tolerance of the cavity. It is only necessary to ensure the accuracy of the first sidewall and the second sidewall. It is easy to disassemble and assemble the mold core. Through the positioning of the first sidewall and the second sidewall, high-precision installation can still be achieved, which is more conducive to the processing and assembly of the mold. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the three-dimensional structure of automotive tubular components; Figure 2 This is a 3D view of the upper mold structure; Figure 3 This is a top view of the overall structure of the upper mold; Figure 4 It is a three-dimensional view of the assembly structure of the mold core, wedge block, and upper mold. Figure 5 This is a top view of the assembly structure of the mold core, wedge block, and upper mold. Detailed Implementation

[0013] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the given embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0014] In the description of this application, it should be understood that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0015] In the description of this application, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0016] See details Figure 1-5 As shown, this application discloses a large-size mold assembly structure, including an upper mold 10 (since the improved assembly structure of this application is located on the upper mold 10, for the sake of simplicity and clarity in describing the structure of this application, this embodiment only describes the assembly structure of the upper mold 10), see details. Figure 2-5 As shown, in this embodiment, the upper mold 10 is provided with a cavity 11, and the cavity 11 receives the mold core 20. The conventional method of assembling the mold core 20 with the upper mold 10 is to machine the cavity 11 according to tolerances suitable for the mold core 20 (for molds requiring high precision, the tolerance gap is often 0.02-0.05mm). Due to the extremely small tolerance gap, assembly and disassembly of small-sized mold cores and upper molds is relatively easy. However, because the size and hollow depth of the automotive pipe fitting 50 in this application are relatively large, the size of the mold core 20 is also relatively large. If the traditional assembly method of the mold core and upper mold is continued, it will become very difficult to assemble and disassemble the mold core 20 into the cavity 11. Specifically, Figure 2-3The specific structure of the cavity 11 of the upper mold is shown. In this embodiment, both the cavity 11 and the assembly end of the mold core 20 are rectangular. The cavity 11 has a first sidewall 12, a second sidewall 13, a third sidewall 14, and a fourth sidewall 15, and also includes a first wedge block 31 and a second wedge block 32. The first sidewall 12 and the second sidewall 13 are machined to the required precision for final positioning. The dimensions of the third sidewall 14 and the fourth sidewall 15 can be appropriately enlarged to facilitate the insertion of the mold core 20. A first mounting groove 141 and a second mounting groove 151 are respectively provided on the third sidewall 14 and the fourth sidewall 15. A first threaded hole 142 and a second threaded hole 152 are respectively provided at the bottom of the first mounting groove 141 and the second mounting groove 151. The first wedge block 31 and the second wedge block 32 are respectively embedded in the first mounting groove 141 and the second mounting groove 151. Of course, it also includes the first locking bolt 311 and the second locking bolt 321, which pass through the first wedge block 31 and the second wedge block 32 respectively and are threaded into the first threaded hole 142 and the second threaded hole 152. In the initial state, the first locking bolt 311 and the second locking bolt 321 are in a loose state, and the mold core 20 is then inserted into the cavity 11. At this time, the first wedge block 31 is located between the third side wall 14 and the side wall of the mold core 20, and the second wedge block 32 is located between the fourth side wall 15 and another adjacent side wall of the mold core 20. Subsequently, tightening the first locking bolt 311 and the second locking bolt 321 will generate a clamping force on the first wedge block 31 and the second wedge block 32, forcing the first wedge block 31 and the second wedge block 32 to further insert into the first mounting groove 141 and the second mounting groove 151. That is, the first wedge block 31 is inserted into the hole between the third side wall 14 and the side wall of the mold core 20, and the second wedge block 32 is inserted into the hole between the fourth side wall 15 and another adjacent side wall of the mold core 20, which will squeeze the adjacent two side walls of the mold core 20. At this time, the mold core 20 facing the first side wall 12 and facing the second side wall 13 will be pressed against the first side wall 12 and the second side wall 13. The first side wall 12 and the second side wall 13 serve as the positioning reference of the upper mold. After being pressed against each other, the positioning is completed. At the same time, the first wedge block 31 and the second wedge block 32 will also squeeze and fix the mold core 20, thus realizing the positioning and fixation of the mold core 20. When disassembling, simply loosen the first locking bolt 311 and the second locking bolt 321, loosen the first wedge block 31 and the second wedge block 32 and pull them outward. At this time, the mold core 20 will be loosened, and then the mold core 20 can be removed.Of course, it should be noted that in actual operation, after the first wedge block 31 and the second wedge block 32 are pressed in, they will not loosen even after being loosened. Therefore, they need to be tapped to loosen them. However, tapping may damage the mold core 20. To avoid this problem, this embodiment preferably provides at least one third threaded hole 312 and a fourth threaded hole 322 on the first wedge block 31 and the second wedge block 32, respectively. Using an external threaded connector such as a lifting ring screwed into the third threaded hole 312 and the fourth threaded hole 322, the first wedge block 31 and the second wedge block 32 can be easily pulled out, avoiding unnecessary damage from tapping. For example, our company has manufactured a small gantry structure support. The two legs of the support are supported on the upper mold. At least one bolt passes through the crossbeam of the support and is screwed into the third threaded hole 312. By tightening the bolt, the first wedge block 31 can be pulled out. The second wedge block 32 can also be pulled out in the same way. Therefore, compared with the traditional assembly method, this embodiment makes it easier to disassemble and assemble the mold core 20. High-precision installation can still be achieved through the positioning of the first side wall 12 and the second side wall 13.

[0017] Furthermore, when the cavity 11 is rectangular, it is often machined using CNC milling. The circular milling cutter will create rounded corners at the corners of the rectangular cavity. However, since the first sidewall 12 and the second sidewall 13 are needed for positioning, the rounded corners of the first sidewall 12 and the second sidewall 13 may interfere with the mold core 20 during mold core installation, preventing the mold core 20 from fully and adequately fitting with the first sidewall 12 and the second sidewall 13, resulting in positioning deviations. Therefore, this embodiment preferably provides clearance notches 16 at the two corners of the first sidewall 12 and the second sidewall 13 to eliminate the problem of unreliable positioning caused by the rounded corners generated during machining. Preferably, before machining the cavity 11, the clearance notches 16 are drilled to the bottom depth of the cavity using a drill bit, and then the cavity is further milled using a CNC milling machine.

[0018] Of course, see Figure 4 and Figure 5 To improve production efficiency, the mold adopts a double-exit design, meaning that two mold cores 20 are symmetrically housed within the cavity 11, with their adjacent surfaces fitting together. The two mold cores 20 are then pressed together by the first wedge block 31 and the second wedge block 32, achieving precise installation and positioning. Figure 4 and Figure 5The diagram shows a portion of the structure of the lower mold core 40 (not shown in the lower mold diagram, but this does not affect the understanding of the mold core installation structure of this application). The lower mold core and the mold cavity 21 of the mold core 20 enclose the injection molding cavity. During injection molding, the molten material is injected into the injection molding cavity by the injection molding machine, thus achieving the injection molding of the automotive pipe part 50. It should be noted that the injection mold must have a cooling water circulation channel to meet the cooling and temperature reduction requirements of the product after injection molding. This can be adapted according to the actual product size, and will not be elaborated here.

[0019] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection of the present utility model.

Claims

1. A large-size mold assembly structure, comprising an upper mold and a lower mold, characterized in that: The upper mold and / or the lower mold are provided with a cavity (11), and the cavity (11) receives a mold core (20); the cavity (11) has a first sidewall (12) and a second sidewall (13), the first sidewall (12) and the second sidewall (13) being adjacent; it also includes a first wedge block (31) and a second wedge block (32), the first wedge block (31) and the second wedge block (32) being located between the sidewall opposite the first sidewall (12) and the second sidewall (13) and the mold core (20), and the first wedge block (31) and the second wedge block (32) can respectively squeeze the mold core (20) toward the direction of the first sidewall (12) and the second sidewall (13), so that the mold core (20) is pressed tightly against the first sidewall (12) and the second sidewall (13).

2. The large-size mold assembly structure according to claim 1, characterized in that: At least at the corner where the first sidewall (12) and the second sidewall (13) meet, a clearance notch (16) is provided.

3. The large-size mold assembly structure according to claim 1, characterized in that: The cavity (11) and the mold core (20) are both rectangular, and have a first sidewall (12), a second sidewall (13), a third sidewall (14) and a fourth sidewall (15). The first wedge block (31) and the second wedge block (32) are respectively located between the third sidewall (14), the fourth sidewall (15) and the corresponding sidewall of the mold core (20).

4. The large-size mold assembly structure according to claim 3, characterized in that: The third sidewall (14) and the fourth sidewall (15) are respectively provided with a first mounting groove (141) and a second mounting groove (151).

5. A large-size mold assembly structure according to any one of claims 1-4, characterized in that: It also includes a locking bolt, which passes through the wedge block and is threaded to the bottom of the cavity (11).

6. The large-size mold assembly structure according to claim 5, characterized in that: The cavity (11) centrally symmetrically receives two mold cores (20), with the adjacent surfaces of the two mold cores (20) fitting together.

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