A mold for die casting of housings
By designing the combined structure of the moving mold frame and the fixed mold frame, the problems of uneven feeding of aluminum water, difficulty in core extraction, poor exhaust effect, inability to replace positioning points, waste of materials and inconvenient operation in traditional die-casting molds are solved, and the effect of improving product quality and reducing production costs is achieved.
Patent Information
- Application Number
- CN202421396725.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-19
- Publication Date
- 2025-04-08
- Estimated Expiration
- 2034-06-19
AI Technical Summary
Traditional die-casting molds have problems such as uneven aluminum water feed, difficulty in core extraction, poor exhaust effect, unchangeable positioning points, waste of materials and inconvenient operation, resulting in low product quality and high production costs.
A mold for shell die casting is designed, adopting a combined structure of a moving mold frame and a fixed mold frame, and multiple feed ports, slider structures, wavy exhaust blocks, detachable positioning blocks and die feet are set up, which improves aluminum water feeding, core extraction, exhaust, positioning and operation.
Through the arrangement of multiple feed ports, the internal quality of the distal part of the product is improved; the slider structure solves the core extraction problem; the wavy exhaust block reduces pore defects; the removable positioning block reduces maintenance difficulty; the increased mold foot simplifies mold flip operation, reducing cost and scrap rate.
Smart Images
Figure CN222725442U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of die casting mold technology, specifically relating to a mold for die casting shells. Background Technology
[0002] Among aluminum processing technologies, die casting has always been widely used due to its high product quality, high production efficiency, and excellent economic benefits. Within the die casting process, the die casting mold is a crucial component.
[0003] Traditional die-casting molds have several drawbacks. Previously, these molds only had two feed ports on the bottom side, causing molten aluminum to enter from only one side during die casting. This resulted in a long flow path within the mold cavity, with the temperature dropping significantly towards the far end, leading to quality issues and a high scrap rate.
[0004] The bottom hole is an angled hole, and the normal direction of the core-pulling direction is not parallel to the parting surface, and the angle is relatively large, making it impossible to perform core-pulling with the previous mold. Since core-pulling is not possible, the outer shape needs to be machined, increasing costs. Furthermore, the large machining allowance makes it prone to porosity defects, leading to product scrap.
[0005] In the past, molds only used venting channels for venting, without corrugated venting blocks to assist in venting, resulting in poor venting effect and easy air holes inside the product, leading to product scrap.
[0006] In the past, the sprue bushing positioning part of the mold was only made on the mold frame. This meant that if the positioning point was damaged, it could not be replaced. The mold frame had to be welded and repaired, which increased production costs and was inconvenient to operate.
[0007] In the past, molds and mold cores were treated as a single unit, which led to waste of mold materials and increased costs.
[0008] Previously, molds did not have any auxiliary support feet underneath, which meant that only a double-hook crane could be used to flip the mold during the process of moving it up or down. This was inconvenient, and the hydraulic cylinder underneath was easily damaged during the mold flipping process.
[0009] Therefore, a mold for die casting of housings is needed that can solve the above problems. Utility Model Content
[0010] The purpose of this invention is to provide a mold for die casting of housings that can solve the problems existing in traditional molds.
[0011] To achieve the above objectives, the present invention provides the following technical solution.
[0012] A mold for die casting a shell includes a moving mold frame and a fixed mold frame, characterized in that: a moving mold is disposed within the moving mold frame; a fixed mold is disposed within the fixed mold frame; the moving mold and the fixed mold are fitted together, and the opposite sides of the moving mold and the fixed mold are provided with recesses corresponding to the shape of the shell, the recesses of the moving mold and the fixed mold fitting together to form a cavity; the cavity is connected to a feed inlet disposed on the moving mold, the feed inlet is connected to the outlet end of a main runner disposed inside the moving mold, and the inflow end of the main runner is connected to a material cake; a sprue sleeve is disposed on the fixed mold frame in accordance with the position of the material cake; the cavity is also connected to an overflow groove formed by the fitting of the recesses of the moving mold and the fixed mold; a slider is fitted with the cavity, the slider is disposed on a slider seat, the slider seat passes through the moving mold and is connected to a guide block via a guide slide, the guide block is disposed on the moving mold frame, and the guide block is connected to a hydraulic cylinder.
[0013] Furthermore, the overflow channel is connected to a first exhaust channel, a second exhaust channel, a third exhaust channel, and a corrugated plate exhaust block; the first exhaust channel, the second exhaust channel, and the third exhaust channel are gaps that are connected to the environment between the fixed mold frame and the moving mold frame.
[0014] Furthermore, there are three feed inlets, which are respectively located at the upper, middle and lower parts of the cavity, namely the first feed inlet, the second feed inlet and the third feed inlet.
[0015] Furthermore, mold feet are provided under the moving mold frame.
[0016] Furthermore, a connecting rod is provided on the hydraulic cylinder, and a limit switch for controlling the stroke of the hydraulic cylinder is provided in cooperation with the connecting rod.
[0017] Furthermore, a detachable positioning block is provided between the sprue bushing and the fixed mold frame.
[0018] Furthermore, the moving mold is provided with an opening; a push rod is provided in the opening; the push rod is connected to a die-casting machine; the die-casting machine is connected to the moving mold frame.
[0019] The beneficial effects of this utility model.
[0020] It features three feed ports for auxiliary filling of the far end of the product, improving the internal quality of the far end; a slider structure solves the core-pulling problem; a wave plate venting block reduces air hole defects; the positioning block is removable, reducing maintenance difficulty; inserts are added, saving materials and reducing costs; and mold feet are added, making mold flipping simple and safe. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the moving mold frame part of this utility model.
[0022] Figure 2 This is a schematic diagram of the fixed mold frame part of this utility model.
[0023] Figure 3 This is a side sectional view of the structure of this utility model.
[0024] The numbers in the diagram are explained as follows: 1-Material cake, 2-Main runner, 3-Inlet, 4-Wave plate venting block, 5-Overflow groove, 6-Fixed mold, 7-Cavity, 8-Moving mold, 9-Moving mold frame, 10-Mold foot, 11-Hydraulic cylinder, 12-Limit switch, 13-Fixed mold frame, 14-Gate bushing, 15-Positioning block, 16-Guide block, 17-Slider seat, 18-Slider, 31-First inlet, 32-Second inlet, 33-Third inlet, 51-First venting channel, 52-Second venting channel, 53-Third venting channel. Detailed Implementation
[0025] like Figures 1 to 3 As shown, this utility model includes a moving mold frame 9 and a fixed mold frame 13, characterized in that: a moving mold 8 is disposed within the moving mold frame 9; a fixed mold 6 is disposed within the fixed mold frame 13; the moving mold 8 and the fixed mold 6 are configured to cooperate, and the opposite sides of the moving mold 8 and the fixed mold 6 are provided with recesses corresponding to the shape of the shell, the recesses of the moving mold 8 and the fixed mold 6 cooperate to form a cavity 7; the cavity 7 is connected to a feed inlet 3 disposed on the moving mold 8, and the feed inlet 3 is connected to a main feed inlet disposed inside the moving mold 8. The outflow end of the sprue 2 and the inflow end of the main sprue 8 are connected to the material cake 1; the fixed mold frame 13 is provided with a sprue sleeve 14 that matches the position of the material cake 1; the cavity 7 is also connected to an overflow groove 5 formed by the recessed cooperation of the moving mold 8 and the fixed mold 6; a slider 18 is provided in cooperation with the cavity 7, the slider 18 is provided on the slider seat 17, the slider seat 17 passes through the moving mold 8 and is connected to a guide block 16 through a guide slide, the guide block 16 is provided on the moving mold frame 9, and the guide block 16 is connected to a hydraulic cylinder 11.
[0026] Furthermore, the overflow channel 5 is connected to the first exhaust channel 51, the second exhaust channel 52, the third exhaust channel 53 and the corrugated plate exhaust block 4 respectively; the first exhaust channel 51, the second exhaust channel 52 and the third exhaust channel 53 are gaps that are connected to the environment between the fixed mold frame 13 and the moving mold frame 9.
[0027] Furthermore, the feed inlet 3 is provided in three parts, which are respectively located in the upper, middle and lower parts of the cavity 7, namely the first feed inlet 31, the second feed inlet 32 and the third feed inlet 33.
[0028] Furthermore, a mold foot 10 is provided under the moving mold frame 9.
[0029] Furthermore, a connecting rod is provided on the hydraulic cylinder 11, and a limit switch 12 for controlling the stroke of the hydraulic cylinder 11 is provided in cooperation with the connecting rod.
[0030] Furthermore, a detachable positioning block 15 is provided between the sprue bushing 14 and the fixed mold frame 13.
[0031] Furthermore, the moving mold 8 is provided with an opening; a push rod is provided in the opening; the push rod is connected to a die-casting machine; the die-casting machine is connected to the moving mold frame 9.
[0032] The working process of this utility model.
[0033] After the moving mold 8 and the fixed mold 6 are combined, the hydraulic cylinder 11 is activated, pushing the slider 18 to the designated position to close the cavity 7.
[0034] Molten aluminum enters from the billet 1, passes through the main gating system 2, and then enters the mold cavity 7 through the feed inlet 3. The cold material at the front end enters the overflow trough 5, the molten aluminum occupies the mold cavity, and the gas is discharged through the first exhaust channel 51, the second exhaust channel 52, the third exhaust channel 53, and the corrugated plate exhaust block 4.
[0035] After molding, the mold is opened, the slider 18 is pulled out, and the ejector pin pushes the molded product out of the mold and transfers it to the next process.
[0036] It is understood that the above specific description of this utility model is only used to illustrate this utility model and is not limited to the technical solutions described in the embodiments of this utility model. Those skilled in the art should understand that modifications or equivalent substitutions can still be made to this utility model to achieve the same technical effect; as long as the use needs are met, they are all within the protection scope of this utility model.
Claims
1. A die for housing die casting, comprising a movable die frame (9) and a fixed die frame (13), characterized in that: A movable mold (8) is arranged in the movable mold frame (9); a fixed mold (6) is arranged in the fixed mold frame (13); the movable mold (8) and the fixed mold (6) are arranged in cooperation with each other, and the sides of the movable mold (8) and the fixed mold (6) opposite to each other are both provided with depressions corresponding to the shape of the shell, and the depressions of the movable mold (8) and the fixed mold (6) cooperate to form a mold cavity (7); the mold cavity (7) is connected to a feed port (3) arranged on the movable mold (8), and the feed port (3) is connected to an outflow end of a main runner (2) arranged inside the movable mold (8), and an inflow end of the main runner (2) is connected to the inflow end of the main runner (2). The end is connected to a material cake (1); a gate sleeve (14) is arranged on the fixed mold frame (13) in cooperation with the position of the material cake (1); the cavity (7) is also connected to an overflow groove (5) formed by the movable mold (8) and the fixed mold (6) in cooperation; a slider (18) is arranged in cooperation with the cavity (7); the slider (18) is arranged on a slider seat (17); the slider seat (17) passes through the movable mold (8) and is connected to a guide block (16) through a guide slideway; the guide block (16) is arranged on the movable mold frame (9), and the guide block (16) is connected to an oil cylinder (11).
2. A mold for shell die-casting according to claim 1, characterized in that: The overflow trough (5) is respectively connected to a first exhaust passage (51), a second exhaust passage (52), a third exhaust passage (53) and a wave plate exhaust block (4); the first exhaust passage (51), the second exhaust passage (52) and the third exhaust passage (53) are gaps arranged between the fixed mold frame (13) and the movable mold frame (9) and communicating with the environment.
3. A mold for housing die-casting according to claim 1, characterized in that: The feed openings (3) are provided in three locations, which are respectively arranged at the upper, middle and lower parts of the cavity (7), and are respectively a first feed opening (31), a second feed opening (32) and a third feed opening (33).
4. A mold for housing die-casting according to claim 1, characterized in that: A mold foot (10) is provided under the movable mold frame (9).
5. A mold for housing die-casting according to claim 1, characterized in that: The oil cylinder (11) is provided with a connecting rod, and a travel switch (12) for controlling the travel of the oil cylinder (11) is provided in cooperation with the connecting rod.
6. A mold for housing die-casting according to claim 1, characterized in that: A detachable positioning block (15) is provided between the sprue sleeve (14) and the fixed mold frame (13).
7. A mold for housing die-casting according to claim 1, characterized in that: The movable die (8) is provided with an opening; a push rod is provided in the opening; the push rod is connected to a die-casting machine; and the die-casting machine is connected to the movable die frame (9).