Forming structure of the upper plate of the die casting mold

Abstract

This utility model discloses the forming structure of the upper plate of a die-casting mold. The cavity is composed of a front mold core, a rear mold core, and four cores that are slidably mounted on the rear template and connected end to end. One end of each core faces one side wall of the cavity and is adapted to one side wall of the product. The end of each core facing the cavity forms a wave pattern extending along the mold closing direction. When the mold is closed, the wave patterns on adjacent cores smoothly connect. By selecting cores with wave patterns as the four side walls of the directional cavity, this utility model, in conjunction with the front and rear mold cores, can form wave-shaped decorative stripes on the side walls of the square plate product. This not only beautifies the appearance of the product but also hides defects such as casting gates and sand holes that are difficult to eliminate at the casting gates in the grooves between the two decorative stripes, without affecting the appearance and tactile feel of the product. It also ensures that the functional surfaces (upper and lower ends) of the product maintain high dimensional accuracy, ensuring product quality.

Description

Technical Field

[0001] This utility model relates to the field of die casting mold technology, and in particular to the forming structure of the upper plate of a die casting mold. Background Technology

[0002] For square metal plates, the top and bottom ends are usually used as functional surfaces for connection and positioning. To ensure proper assembly and use, the feed port is usually located on the side wall of the product for forming. This facilitates forming and also leaves sand holes that are easily formed at the feed port on the side wall of the product. However, when all four side walls of the square plate are also appearance surfaces, regardless of whether the feed port is located on the functional surface or the appearance surface, it is generally necessary to trim the functional surface or appearance surface after forming to eliminate defects such as sand holes or slag residue. This is time-consuming, labor-intensive, and makes it difficult to improve production efficiency and reduce production costs. Summary of the Invention

[0003] To address the problems existing in the prior art, this utility model provides a forming structure for the upper plate of a die-casting mold. A core with a wave pattern is selected as the four side walls of the directional cavity. In conjunction with the front mold core and the rear mold core, wave-shaped decorative stripes can be formed on the side walls of the square plate product. This not only beautifies the appearance of the product, but also hides the casting gate and defects such as sand holes that are difficult to eliminate at the casting gate in the groove between the two decorative stripes. This does not affect the appearance and tactile feel of the product, and also ensures that the functional surfaces (upper and lower ends) of the product maintain high dimensional accuracy, thus ensuring the quality of the product.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: The die-casting mold has a forming structure for the upper plate. The die-casting mold is used to form a square metal plate. Its front mold includes a casting barrel, a front template, and a front mold core. Its rear mold includes a rear template and a rear mold core. The opposing ends of the front and rear mold cores are matched to form cavities adapted to the product. These cavities are connected to the outlet of the casting barrel. Wherein: The cavity is formed by splicing the front mold core, the rear mold core, and four cores that are slidably mounted on the rear template and connected end to end. One end of each core faces one side wall of the cavity and is adapted to one side wall of the product. Each core can slide towards or away from each other under the action of external force to splice together to form the cavity or move away from the product formed in the cavity. The end of each core facing the cavity is provided with several protrusions and grooves that are parallel to the end face of the product. Both ends of each protrusion and groove extend to the two opposite side walls of the core. Several protrusions and grooves are arranged at intervals to form a wave pattern extending along the mold closing direction. When the mold is closed, the wave patterns on two adjacent cores are smoothly connected. The core has a flow channel at the end facing the front mold. One end of the flow channel extends to a crest of the wave pattern, and the other end can be connected to the liquid outlet when the mold is closed.

[0005] As a further explanation of the above technical solution: In the above technical solution, the core with the flow channel is detachably fixed at the end of the first slide plate facing the rear mold core, and the other three cores are detachably fixed at the ends of the second slide plate facing the rear mold core. The first slide plate and the three second slide plates are slidably mounted on the rear template and can slide on the rear template under the action of external force to approach or move away from the cavity.

[0006] In the above technical solution, each of the second slide plates is provided with a set of inclined braces. Each set of inclined braces obliquely penetrates a second slide plate, with one end extending to the rear template and slidably connected thereto, and the other end extending to the outside of the second slide plate and obliquely extending toward the front mold core. The front template is provided with guide members that are adapted to each set of inclined braces. The first slide plate is connected to a driving device and can slide on the rear template under its drive.

[0007] In the above technical solution, the flow channel includes a main flow channel and several branch flow channels connected to it. One end of the main flow channel is adapted to the bottom end of the casting barrel. One end of each branch flow channel is connected to the main flow channel, and the other end extends to the same crest of the wave pattern. The several branch flow channels are arranged in a straight line along the contour edge of the core.

[0008] Compared with the prior art, the beneficial effects of this utility model are as follows: by selecting a core with a wave pattern as the four side walls of the directional cavity, and cooperating with the front mold core and the rear mold core, wave-shaped decorative stripes can be formed on the side walls of the square plate product. This not only beautifies the appearance of the product, but also hides the casting gate and other defects such as sand holes that are difficult to eliminate at the casting gate in the groove between the two decorative stripes. This will not affect the appearance and tactile feel of the product, and can also ensure that the functional surfaces (upper end and lower end) of the product maintain high dimensional accuracy, thus ensuring the quality of the product. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure when the mold is closed in this embodiment (only the front mold core is shown in the front mold). Figure 2 This is a schematic diagram of the cavity structure when the mold is closed in this embodiment (the front mold core and the rear mold core are not shown, and the runner is represented by the formed sprue). Figure 3 yes Figure 2 A schematic diagram of the decomposed structure; Figure 4 yes Figure 3Enlarged view of part A in the middle.

[0010] In the diagram: 10. Casting barrel; 20. Front mold core; 30. Rear mold plate; 40. Rear mold core; 50. Core; 51. Wave pattern; 52. Runner; 1. Main runner; 2. Sub-runner; 60. First slide plate; 70. Second slide plate; 80. Diagonal brace; 3. Push rod; 90. Drive device; 100. Product. Detailed Implementation

[0011] The present invention will now be described in further detail with reference to the accompanying drawings.

[0012] The embodiments described with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are 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, and therefore should not be construed as limiting this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "several" or "more than" means two or more, unless otherwise explicitly specified. In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. In this application, unless otherwise expressly specified and limited, "above" or "below" a second feature can include direct contact between the first and second features, or it can include contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of a second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" of a second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0013] like Figure 1 As shown, the die-casting mold has a forming structure for the upper plate. The die-casting mold is used to form a square metal plate. Its front mold is provided with a casting barrel 10, a front template and a front mold core 20. Its rear mold is provided with a rear template 30 and a rear mold core 40. The opposing ends of the front mold core 20 and the rear mold core 40 are matched with each other and form a cavity that is adapted to the product 100. The cavity is connected to the liquid outlet of the casting barrel 10.

[0014] like Figure 2As shown, the cavity is formed by splicing together a front mold core 20, a rear mold core 40, and four cores 50 that are slidably mounted on the rear template 30 and connected end to end. One end of each core 50 faces one side wall of the cavity and is adapted to one side wall of the product 100. Each core 50 can slide towards or away from each other under the action of external force to splice together to form a cavity or move away from the product 100 formed in the cavity. The end of each core 50 facing the cavity is provided with several protrusions and grooves that are parallel to the end face of the product. The two ends of each protrusion and groove extend to the two opposite side walls of the core. Several protrusions and grooves are arranged at intervals to form a wave pattern 51 extending along the mold closing direction. When the mold is closed, the wave patterns 51 on two adjacent cores 50 are smoothly connected.

[0015] like Figure 3-4 As shown, a core 50 has a flow channel 52 at its end facing the front mold. One end of the flow channel 52 extends onto a crest of the corrugated pattern 51, and the other end can connect with the liquid outlet when the mold is closed. The core 50 with the flow channel 52 is detachably fixed at the end of the first slide plate 60 facing the rear mold core 40. The other three cores 50 are each detachably fixed at the end of the second slide plate 70 facing the rear mold core 40. The first slide plate 60 and the three second slide plates 70 are slidably mounted on the rear mold plate 30 and can slide on the rear mold plate 30 under the action of external force to approach or move away from the cavity. In this embodiment, the flow channel 52 includes a main flow channel 1 and several branch flow channels 2 connected to it. One end of the main flow channel 1 is adapted to the bottom end of the casting barrel 10. One end of each branch flow channel 2 is connected to the main flow channel 1, and the other end extends to the same crest of the corrugated pattern 51. The several branch flow channels 2 are arranged in a straight line along the contour edge of the core 50.

[0016] Preferably, each second slide plate 70 is provided with a set of diagonal braces 80, each set of diagonal braces 80 obliquely passing through a second slide plate 70, with one end extending to and slidably connected to the rear template 30, and the other end extending to the outside of the second slide plate 70 and obliquely extending towards the front mold core 20. The front template is provided with guide members that are adapted to each set of diagonal braces 80. The first slide plate 60 is drivenly connected to a driving device 90 and can slide on the rear template 30 under its drive. In this embodiment, each set of diagonal braces 80 includes two push rods 3 that extend obliquely towards the front mold core. During mold closing, the rear mold moves towards the front mold. The three sets of diagonal braces 80 simultaneously abut against the front mold plate and push the second sliding plate 70, causing the core 50 to slide towards the rear mold core 40 (cavity) on the rear mold plate 30. Simultaneously, the drive device 90 drives the first sliding plate 60, causing another core 50 to slide towards the rear mold core 40 (cavity) and connect the casting barrel 10 and the main runner 1. The four cores 50, together with the front mold core 20 and the rear mold core 40, form the cavity. The runner 2 guides the molten metal from the main runner 1 to the cavity. During casting, the wave patterns 51 on the four cores 50 are present on the four sides of the product 100. Decorative stripe protrusions parallel to the upper and lower end faces are formed on the side walls. Since the injection port is located on the crest of the wave pattern 51, it falls into the groove between two decorative stripe protrusions, thus not affecting the appearance of the decorative stripe protrusions. After completion, the rear mold separates from the front mold. The three sets of inclined supports 80 are guided by the upper mold plate to push the three second sliding plates 70, causing the cores 50 on them to leave the product 100 on the rear mold core 40. Simultaneously, the casting barrel 10 disconnects from the main channel 1, and the drive device 90 drives the first sliding plate 60 to pull the last core 50 away from the product 100, completing the mold opening action. The mold structure that automatically drives the sliding plates on the rear mold plate to achieve the side core pulling action during mold closing and opening is existing technology and widely used in the field, which is a basic understanding of those skilled in the art. The specific connection and cooperation structure between the inclined supports 80 and the rear mold plate 30 and the front mold plate will not be described in detail here.

[0017] This invention uses a core 50 with a wave pattern 51 as the four side walls of the directional cavity, which, in conjunction with the front mold core 20 and the rear mold core 40, can form wave-shaped decorative stripes on the side walls of the square plate product. This not only beautifies the appearance of the product 100, but also hides defects such as the casting gate and sand holes that are difficult to eliminate at the casting gate in the groove between the two decorative stripes. This does not affect the appearance and tactile feel of the product, and also ensures that the functional surfaces (upper and lower ends) of the product 100 maintain high dimensional accuracy, thus ensuring the quality of the product 100.

[0018] The above does not limit the technical scope of this utility model. Any modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of this utility model shall still fall within the scope of the technical solution of this utility model.

Claims

1. A forming structure for an upper plate of a die-casting mold, the die-casting mold being used to form a square metal plate, wherein the front mold is provided with a casting barrel, a front template, and a front mold core, and the rear mold is provided with a rear template and a rear mold core, the opposing ends of the front mold core and the rear mold core being matched to each other and forming a cavity adapted to the product, the cavity being connected to the liquid outlet of the casting barrel; characterized in that: The cavity is formed by splicing the front mold core, the rear mold core, and four cores that are slidably mounted on the rear template and connected end to end. One end of each core faces one side wall of the cavity and is adapted to one side wall of the product. Each core can slide towards or away from each other under the action of external force to splice together to form the cavity or move away from the product formed in the cavity. The end of each core facing the cavity is provided with several protrusions and grooves that are parallel to the end face of the product. Both ends of each protrusion and groove extend to the two opposite side walls of the core. Several protrusions and grooves are arranged at intervals to form a wave pattern extending along the mold closing direction. When the mold is closed, the wave patterns on two adjacent cores are smoothly connected. The core has a flow channel at the end facing the front mold. One end of the flow channel extends to a crest of the wave pattern, and the other end can be connected to the liquid outlet when the mold is closed.

2. The forming structure of the upper plate of the die-casting mold according to claim 1, characterized in that, The core with the flow channel is detachably fixed at the end of the first slide plate facing the rear mold core. The other three cores are detachably fixed at the ends of the second slide plates facing the rear mold core. The first slide plate and the three second slide plates are slidably mounted on the rear template and can slide on the rear template under the action of external force to approach or move away from the cavity.

3. The forming structure of the upper plate of the die-casting mold according to claim 2, characterized in that, Each of the second slide plates is provided with a set of diagonal braces. Each set of diagonal braces obliquely passes through a second slide plate, with one end extending to the rear template and slidably connected thereto, and the other end extending to the outside of the second slide plate and obliquely extending toward the front mold core. The front template is provided with guide members that are adapted to each set of diagonal braces. The first slide plate is connected to a driving device and can slide on the rear template under its drive.

4. The forming structure of the upper plate of the die-casting mold according to any one of claims 1-3, characterized in that, The flow channel includes a main flow channel and several branch flow channels connected to it. One end of the main flow channel is adapted to the bottom end of the casting barrel. One end of each branch flow channel is connected to the main flow channel, and the other end extends to the same crest of the wave pattern. The branch flow channels are arranged in a straight line along the contour edge of the core.

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