A lamp shell die casting mold device
By introducing protruding strips and mating strip structures into the die-casting mold, the problems of flash and burrs in lamp housing processing are solved, and the mold usage cost is reduced through the detachable design.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG SPRING LIGHTING CO LTD
- Filing Date
- 2025-07-16
- Publication Date
- 2026-06-09
AI Technical Summary
Existing die-casting molds are prone to producing burrs or flash when processing lamp housings, and it is difficult to replace easily damaged components, resulting in high mold usage costs.
The design incorporates a protruding strip and a mating strip structure. The protruding strip is located on the side of the concave mold away from the gate, while the mating strip mates with the matching groove of the protruding mold. This prevents defects from forming when the aluminum alloy is filled on the side away from the gate. Additionally, inserts and diversion bumps can be disassembled to reduce mold usage costs.
It effectively avoids flash and burr defects, reduces the product defect rate of the mold, and reduces the use cost of the mold through the detachable design.
Smart Images
Figure CN224333409U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of die-casting mold technology, and in particular to a lamp housing die-casting mold device. Background Technology
[0002] Streetlight housings are typically made of aluminum alloy. During manufacturing, a die-casting mold is used, and molten aluminum alloy is poured into the pressure chamber of the die-casting mold to fill the mold cavity at high speed. The alloy solidifies under pressure to form the desired housing.
[0003] The following disadvantages are commonly found when using existing die-casting molds to manufacture lamp housings: 1. When molten aluminum alloy is die-cast into the pressure chamber of the die-casting mold, the molten alloy in the pressure chamber can easily fill between the concave and convex molds on the side away from the pouring gate, forming defects such as flash or burrs; 2. The concave and convex molds on the die-casting mold are vulnerable components, making it inconvenient to replace vulnerable components specifically, or requiring replacement of the entire mold, resulting in high mold usage costs.
[0004] Therefore, how to provide a lamp housing die-casting mold device with a simpler and more reasonable structural design that can better reduce product defects and reduce mold usage costs has become a technical problem that needs to be solved by those skilled in the art. Utility Model Content
[0005] In view of the above-mentioned deficiencies of the prior art, the technical problem to be solved by this utility model is how to provide a lamp housing die-casting mold device with a simpler and more reasonable structural design, which can better reduce product defects and reduce mold usage costs.
[0006] To achieve the above objectives, this utility model provides a lamp housing die-casting mold device, including a moving mold part structure and a fixed mold part structure; the moving mold part structure includes a concave mold plate, and the fixed mold part structure includes a convex mold plate disposed adjacent to the concave mold plate below it; a concave mold cavity and a convex mold cavity are respectively provided on the surfaces of the concave mold plate and the convex mold plate opposite to each other, such that the concave mold cavity and the convex mold cavity can cooperate to form a molding cavity for molding the lamp housing; a pouring gate is provided on the moving mold part structure on one side corresponding to the molding cavity, and the pouring gate is connected to the molding cavity; the feature is that; a protruding strip is provided on the lower surface of the concave mold plate on the side away from the pouring gate, arranged longitudinally along the molding cavity, and the protruding strip is located outside the contour line of the concave mold cavity; a mating groove is provided on the upper surface of the convex mold plate corresponding to the protruding strip, and after the concave mold plate and the convex mold plate are mated, the protruding strip can be mated in the mating groove.
[0007] Thus, in the aforementioned lamp housing die-casting mold device, a protruding strip is provided on the lower surface of the concave mold plate, on the side away from the pouring gate, arranged longitudinally along the forming cavity. This protruding strip is positioned outside the contour line of the concave mold cavity. A mating groove is provided on the upper surface of the convex mold plate, corresponding to the protruding strip, so that after the concave and convex mold plates mate, the protruding strip can be correspondingly positioned within the mating groove. The designed protruding strip acts as a barrier, better preventing defects such as flash or burrs from forming between the concave and convex mold plates on the side away from the pouring gate during die casting. Since the area between the concave and convex mold plates on the side away from the pouring gate is the first to be filled with aluminum alloy, this position is most prone to flash or burr defects.
[0008] As an optimization, a mating strip is provided on the lower surface of the concave mold plate at a position corresponding to the far end of the forming cavity, and the end of the mating strip away from the gate is connected to the far end of the protrusion strip; a matching groove is provided on the upper surface of the convex mold plate corresponding to the mating strip, and the end of the matching groove away from the gate is connected to the far end of the mating groove; and the mating strip is located outside the contour line of the concave mold cavity.
[0009] In this way, by setting up mating strips and matching grooves, defects such as flash or burrs can be better avoided at the front end of the forming cavity of aluminum alloy.
[0010] As an optimization, the cross-sections of both the protruding strip and the mating strip are designed as isosceles trapezoidal structures, and the cross-sectional dimensions of the protruding strip and the mating strip are set to be the same.
[0011] In this way, the cross-sectional structure design of the protruding strip and the mating strip is more reasonable and easier to process and manufacture.
[0012] As an optimization, the protruding strip and the mating strip are integrally formed with the concave template.
[0013] This makes the structural design simpler and more reasonable, and easier to process and manufacture.
[0014] As an optimization, the moving mold part structure includes a horizontally positioned moving mold fixing plate at the upper end. A concave mold plate mounting cavity is provided at the middle of the lower surface of the moving mold fixing plate, and a concave mold plate is installed and fixed thereon, so that the lower surface of the concave mold plate is flush with the lower surface of the moving mold fixing plate. A vertically oriented sprue is provided on the upper surface of the moving mold fixing plate, penetrating its thickness direction, and the inner side of the sprue is provided through one side of the concave mold plate, forming an arc-shaped clearance notch on one side of the concave mold plate. The fixed mold part structure includes a horizontally positioned fixed mold fixing plate at the upper end. A fixed mold plate mounting cavity is provided at the middle of the upper surface of the fixed mold fixing plate, and a convex mold plate is installed and fixed thereon. A flow-diverting protrusion is formed on the upper surface of the fixed mold fixing plate at a position corresponding to the sprue, and a vertically oriented guide notch is provided on the inner side of the flow-diverting protrusion.
[0015] In this way, the setting of the pouring gate is simpler. By setting the flow diversion bump, the aluminum alloy can be better diverted into the molding cavity, and it can also protect the convex mold plate and the fixed mold plate.
[0016] As an optimization, a material-pulling groove with an integral arc-shaped design is provided on the inner peripheral wall of the outer end of the pouring gate.
[0017] In this way, by designing a material-pulling groove, the material can be better separated from the die-casting equipment.
[0018] As an optimization, mounting holes are provided on the fixed mold plate and mounting blocks are installed thereon, with the diversion protrusions forming on the upper surface of the mounting blocks.
[0019] This makes it easier to replace the flow divider and reduces the cost of using the mold.
[0020] As an optimization, each of the four corner positions of the concave template is provided with a positioning hole, and each of the convex templates is provided with a positioning protrusion corresponding to the positioning hole.
[0021] This improves the fitting accuracy between the concave and convex templates.
[0022] Furthermore, the upper surface of the positioning protrusion is provided with a vertical through-hole that penetrates the protrusion plate.
[0023] As an optimization, the convex template includes a convex template body, and an insert mounting opening is provided on one side of the upper surface of the convex template body. An insert is installed in the insert mounting opening, and the insert and the convex template body together form the convex mold cavity.
[0024] This allows for targeted replacement of inserts, reducing mold usage costs.
[0025] In summary, the aforementioned mold device, by incorporating protruding strips and mating strips, and correspondingly providing mating grooves and matching slots, along with the careful selection of the protruding strips and mating strips' placement, can better prevent defects such as burrs or flash from forming between the concave and convex mold plates on the side furthest from the gating point during die casting, thereby reducing product defects. Furthermore, the detachable and replaceable design of the inserts and diversion bumps can reduce mold usage costs. Attached Figure Description
[0026] Figure 1 This is a schematic diagram of the lamp housing die-casting mold device in a specific embodiment of this utility model.
[0027] Figure 2 yes Figure 1 A schematic diagram after rotating by one angle.
[0028] Figure 3 yes Figure 1 Top view.
[0029] Figure 4 yes Figure 3 AA sectional view.
[0030] Figure 5 yes Figure 3 BB cross-sectional view.
[0031] Figure 6 yes Figure 1 A schematic diagram omitting the moving model section.
[0032] Figure 7 yes Figure 1 A schematic diagram omitting the mold fixing part.
[0033] Figure 8 yes Figure 1 A schematic diagram of the concave template. Detailed Implementation
[0034] The present invention will be further described below with reference to the accompanying drawings and embodiments. It should be noted that in the description of the present invention, terms such as "upper," "lower," "left," "right," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are used only for the convenience of describing the present invention and for 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 manner. Therefore, they should not be construed as limitations on the present invention. Terms such as "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0035] like Figures 1 to 8 As shown, a lamp housing die-casting mold device includes a moving mold part structure 1 and a fixed mold part structure 2. The moving mold part structure includes a concave mold plate 3, and the fixed mold part structure includes a convex mold plate 4 disposed adjacent to the concave mold plate below it. A concave mold cavity 5 and a convex mold cavity 6 are respectively provided on the surfaces of the concave mold plate and the convex mold plate opposite to each other, so that the concave mold cavity and the convex mold cavity can cooperate to form a forming cavity 7 for forming the lamp housing. A pouring gate 8 is provided on the moving mold part structure on one side corresponding to the forming cavity, and the pouring gate is connected to the forming cavity. A protruding strip 9 is provided on the lower surface of the concave mold plate on the side away from the pouring gate, and the protruding strip is located outside the contour line of the concave mold cavity. A mating groove 10 is provided on the upper surface of the convex mold plate corresponding to the protruding strip. After the concave mold plate and the convex mold plate are mated, the protruding strip can be mated in the mating groove.
[0036] Thus, in the aforementioned lamp housing die-casting mold device, a protruding strip is provided on the lower surface of the concave mold plate, on the side away from the pouring gate, arranged longitudinally along the forming cavity. This protruding strip is positioned outside the contour line of the concave mold cavity. A mating groove is provided on the upper surface of the convex mold plate, corresponding to the protruding strip, so that after the concave and convex mold plates mate, the protruding strip can be correspondingly positioned within the mating groove. The designed protruding strip acts as a barrier, better preventing defects such as flash or burrs from forming between the concave and convex mold plates on the side away from the pouring gate during die casting. Since the area between the concave and convex mold plates on the side away from the pouring gate is the first to be filled with aluminum alloy, this position is most prone to flash or burr defects.
[0037] In this specific embodiment, a mating strip 11 is provided on the lower surface of the concave mold plate at a position corresponding to the far end of the molding cavity, and the end of the mating strip away from the pouring gate is connected to the far end of the protruding strip; a matching groove 12 is provided on the upper surface of the convex mold plate corresponding to the mating strip, and the end of the matching groove away from the pouring gate is connected to the far end of the mating groove; and the mating strip is located outside the contour line of the concave mold cavity.
[0038] In this way, by setting up mating strips and matching grooves, defects such as flash or burrs can be better avoided at the front end of the forming cavity of aluminum alloy.
[0039] In this specific embodiment, the cross-sections of both the protruding strip and the mating strip are designed as isosceles trapezoidal structures, and the cross-sectional dimensions of the protruding strip and the mating strip are set to be the same.
[0040] In this way, the cross-sectional structure design of the protruding strip and the mating strip is more reasonable and easier to process and manufacture.
[0041] In this specific embodiment, the protruding strip and the mating strip are integrally formed with the concave template.
[0042] This makes the structural design simpler and more reasonable, and easier to process and manufacture.
[0043] In this specific embodiment, the moving mold part structure includes a horizontally arranged moving mold fixing plate 13 at the upper end. A concave template mounting cavity is provided at the middle position of the lower surface of the moving mold fixing plate, and a concave template is installed and fixed thereon, so that the lower surface of the concave template is flush with the lower surface of the moving mold fixing plate. A vertically arranged pouring gate is provided on the upper surface of the moving mold fixing plate, penetrating its thickness direction, and the inner side of the pouring gate penetrates one side of the concave template, forming an arc-shaped clearance notch 14 on one side of the concave template. The fixed mold part structure includes a horizontally arranged fixed mold fixing plate 15 at the upper end. A fixed template mounting cavity is provided at the middle position of the upper surface of the fixed mold fixing plate, and a convex template is installed and fixed thereon. A flow-diverting protrusion 16 is protruding on the upper surface of the fixed mold fixing plate at the position corresponding to the pouring gate, and a vertically arranged guide notch 17 is provided on the inner side of the flow-diverting protrusion.
[0044] In this way, the setting of the pouring gate is simpler. By setting the flow diversion bump, the aluminum alloy can be better diverted into the molding cavity, and it can also protect the convex mold plate and the fixed mold plate.
[0045] In this specific embodiment, a material pulling groove 18 with an overall arc-shaped design is provided on the inner peripheral wall of the outer end of the pouring port.
[0046] In this way, by designing a material-pulling groove, the material can be better separated from the die-casting equipment.
[0047] In this specific embodiment, a mounting hole is provided on the fixed mold plate and a mounting block 19 is installed thereon, with the diversion protrusion protruding from the upper end surface of the mounting block.
[0048] This makes it easier to replace the flow divider and reduces the cost of using the mold.
[0049] In this specific embodiment, each of the four corner positions of the concave template is provided with a positioning hole 20, and each of the convex templates is provided with a positioning protrusion 21 corresponding to the positioning hole.
[0050] This improves the fitting accuracy between the concave and convex templates.
[0051] Furthermore, the upper surface of the positioning protrusion is provided with a vertical through-hole that penetrates the protrusion plate.
[0052] In this specific embodiment, the convex template includes a convex template body 22, and an insert mounting opening is provided on one side of the upper surface of the convex template body. An insert 23 is installed in the insert mounting opening, and the insert and the convex template body together form the convex mold cavity.
[0053] This allows for targeted replacement of inserts, reducing mold usage costs.
[0054] In summary, the aforementioned mold device, by incorporating protruding strips and mating strips, and correspondingly providing mating grooves and matching slots, along with the careful selection of the protruding strips and mating strips' placement, can better prevent defects such as burrs or flash from forming between the concave and convex mold plates on the side furthest from the gating point during die casting, thereby reducing product defects. Furthermore, the detachable and replaceable design of the inserts and diversion bumps can reduce mold usage costs.
[0055] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.
Claims
1. A lamp housing die-casting mold device, comprising a moving mold part structure and a fixed mold part structure; the moving mold part structure includes a concave mold plate, and the fixed mold part structure includes a convex mold plate disposed adjacent to the concave mold plate below it; and a concave mold cavity and a convex mold cavity are respectively provided on the surfaces of the concave mold plate and the convex mold plate opposite to each other, such that the concave mold cavity and the convex mold cavity can cooperate to form a molding cavity for molding the lamp housing; a pouring gate is provided on the moving mold part structure on one side corresponding to the molding cavity, and the pouring gate is connected to the molding cavity; characterized in that; A protruding strip is provided on the lower surface of the concave mold plate and on the side away from the gate, arranged longitudinally along the molding cavity, such that the protruding strip is located outside the contour line of the concave mold cavity; a mating groove is provided on the upper surface of the convex mold plate and corresponding to the protruding strip, so that after the concave mold plate and the convex mold plate are mated, the protruding strip can be mated and set in the mating groove.
2. The lamp housing die-casting mold device as described in claim 1, characterized in that; A mating strip is provided on the lower surface of the concave mold plate at a position corresponding to the far end of the forming cavity, and the end of the mating strip away from the gate is connected to the far end of the protrusion strip; a matching groove is provided on the upper surface of the convex mold plate corresponding to the mating strip, and the end of the matching groove away from the gate is connected to the far end of the mating groove; and the mating strip is located outside the contour line of the concave mold cavity.
3. The lamp housing die-casting mold device as described in claim 2, characterized in that; Both the cross-section of the protruding strip and the cross-section of the mating strip are designed as isosceles trapezoids, and the cross-sectional dimensions of the protruding strip and the mating strip are set to be the same.
4. The lamp housing die-casting mold device as described in claim 2, characterized in that... The protruding strip and the mating strip are integrally formed with the concave template.
5. The lamp housing die-casting mold device as described in claim 1, characterized in that; The moving mold section includes a horizontally positioned moving mold fixing plate at the top. A concave mold plate mounting cavity is provided in the middle of the lower surface of the moving mold fixing plate, and a concave mold plate is installed and fixed thereon, with the lower surface of the concave mold plate flush with the lower surface of the moving mold fixing plate. A vertically oriented sprue is provided on the upper surface of the moving mold fixing plate, penetrating its thickness direction, with the inner side of the sprue penetrating one side of the concave mold plate and forming an arc-shaped clearance notch on one side of the concave mold plate. The fixed mold section includes a horizontally positioned fixed mold fixing plate at the top. A fixed mold plate mounting cavity is provided in the middle of the upper surface of the fixed mold fixing plate, and a convex mold plate is installed and fixed thereon. A flow-diverting protrusion is formed on the upper surface of the fixed mold fixing plate at a position corresponding to the sprue, and a vertically oriented flow-guiding notch is provided on the inner side of the flow-diverting protrusion.
6. The lamp housing die-casting mold device as described in claim 5, characterized in that; The inner circumferential wall at the outer end of the pouring gate is provided with a material pulling groove that is integrally arc-shaped.
7. The lamp housing die-casting mold device as described in claim 5, characterized in that; Mounting holes are provided on the fixed mold plate and mounting blocks are installed thereon. The upper end face of the mounting blocks protrudes to form the diversion protrusion.
8. The lamp housing die-casting mold device as described in claim 1, characterized in that; Each of the four corners of the concave template is provided with a positioning hole, and each of the convex templates is provided with a positioning protrusion corresponding to the positioning hole.
9. The lamp housing die-casting mold device as described in claim 1, characterized in that; The convex template includes a convex template body, and an insert mounting opening is provided on one side of the upper surface of the convex template body. An insert is installed in the insert mounting opening, and the insert and the convex template body together form the convex mold cavity.