CN215550474U - Variable cavity mold - Google Patents
Variable cavity mold Download PDFInfo
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- CN215550474U CN215550474U CN202023333927.7U CN202023333927U CN215550474U CN 215550474 U CN215550474 U CN 215550474U CN 202023333927 U CN202023333927 U CN 202023333927U CN 215550474 U CN215550474 U CN 215550474U
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Abstract
The utility model discloses a variable cavity die, which comprises a rear die forming block, a bottom plate, an ejector plate and an ejector supporting plate fixedly connected with the ejector plate, wherein the ejector rod, the ejector plate and the ejector supporting plate are fixed into a whole, and the variable cavity die is characterized in that: still including shaping pole, shaping sleeve and elastic block, be equipped with the shaping hole on the back mould shaping piece, the shaping sleeve is located the shaping hole, and the shaping pole is located the shaping sleeve, and the terminal surface of shaping sleeve and shaping pole constitutes the profile, the shaping pole passes thimble board and thimble layer board and is connected with the bottom plate, the shaping sleeve is fixed as an organic whole with thimble board and thimble layer board, the elastic block sets up between thimble layer board and bottom plate, and can drive thimble board and thimble layer board compression elastic block and remove when shaping telescopic terminal surface receives the extrusion.
Description
Technical Field
The utility model relates to a variable cavity die.
Background
Injection molds have been used in a large number of industrial processes to injection mold products in the thousands. At present, a thin round plastic sheet with grooves is also formed through injection molding, but in the injection molding process, the fact that glue is easy to flow fast due to a deeper forming cavity at the annular periphery of the plastic sheet is found, but the glue is slow to flow due to the thinner thickness of the bottom surface of the groove of the plastic sheet, so that middle gas is not enough to be squeezed out, the glue at the annular periphery is full, and middle gas trapping is formed, and the quality of a product is seriously affected.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model provides a variable cavity die.
The technical scheme adopted by the utility model for solving the technical problems is as follows:
the utility model provides a variable die cavity mould, includes back mould shaping piece, bottom plate, thimble board and with thimble board fixed connection's thimble layer board, the ejector pin is fixed as an organic whole with thimble board and thimble layer board, its characterized in that: still including shaping pole, shaping sleeve and elastic block, be equipped with the shaping hole on the back mould shaping piece, the shaping sleeve is located the shaping hole, and the shaping pole is located the shaping sleeve, and the terminal surface of shaping sleeve and shaping pole constitutes the profile, the shaping pole passes thimble board and thimble layer board and is connected with the bottom plate, the shaping sleeve is fixed as an organic whole with thimble board and thimble layer board, the elastic block sets up between thimble layer board and bottom plate, and can drive thimble board and thimble layer board compression elastic block and remove when shaping telescopic terminal surface receives the extrusion.
The thimble supporting plate is provided with a mounting hole, and one end of the elastic block is positioned in the mounting hole.
The bottom plate is provided with a bottom countersunk hole, one end of the forming rod is provided with an annular rod cap matched with the bottom countersunk hole, and the rod cap is locked in the countersunk hole through the lower template.
The ejector pin plate is provided with a plate counter bore, the end part of the molding sleeve is provided with an annular cylinder cap matched with the plate counter bore, and the cylinder cap is locked in the counter bore through the ejector pin supporting plate.
The utility model has the beneficial effects that: the variable combined forming cavity is formed by the forming rod and the forming sleeve, the end face of the forming sleeve is flush with the end face of the forming rod when the die is just closed, so that molten plastic can flow uniformly to fill the whole forming cavity and completely discharge gas, after the gas is discharged, the end face of the forming sleeve is continuously subjected to injection molding pressure of the molten plastic, the pressure can enable the forming sleeve to drive the ejector plate to compress the elastic block to move, and therefore the final forming cavity with the end face of the forming sleeve lower than that of the forming rod is formed, and a circular plastic sheet with a groove in the middle is injected.
Drawings
The utility model is further illustrated with reference to the following figures and examples.
FIG. 1 is a structural view of the present invention when clamping a mold;
FIG. 2 is an internal structural view of the present invention at the time of clamping;
fig. 3 is a partial exploded view.
Fig. 4 is a partial exploded view in another direction.
Detailed Description
Referring to fig. 1 to 4, the utility model discloses a variable cavity die, which comprises a rear die forming block 1, a bottom plate 2, an ejector plate 3, an ejector pin supporting plate 4 fixedly connected with the ejector plate 3, a forming rod 5, a forming sleeve 6 and an elastic block 7, wherein the rear die forming block 1 is provided with a forming hole 14, the forming sleeve 6 is positioned in the forming hole 14, the forming rod 5 is positioned in the forming sleeve 6, the end surfaces of the forming sleeve 6 and the forming rod 5 form a forming surface, the forming rod 5 penetrates through the ejector plate 3 and the ejector pin supporting plate 4 to be fixedly connected with the bottom plate 2, and the specific structure is as follows: the bottom plate 2 is provided with a bottom counter bore 10, one end of the forming rod 5 is provided with an annular rod cap 11 matched with the bottom counter bore 10, the rod cap 11 is fixedly locked in the counter bore through a lower template 12, and the structure is convenient to disassemble and maintain.
As shown in the figure, the shaping sleeve 6 is fixed as an organic whole with thimble board 3 and thimble layer board 4, and concrete structure lies in: the thimble plate 3 is provided with a plate counter bore 8, the end part of the molding sleeve 6 is provided with an annular cylinder cap 13 matched with the plate counter bore 8, the cylinder cap 13 is locked in the counter bore through the thimble supporting plate 4, and the structure is convenient to detach and maintain.
As shown in the figure, elastic block 7 sets up between thimble layer board 4 and bottom plate 2, and can drive thimble board 3 and thimble layer board 4 compression elastic block 7 and remove when the terminal surface of shaping sleeve 6 receives the extrusion, the concrete mounting structure of elastic block 7: the thimble supporting plate 4 is provided with a mounting hole 9, and one end of the elastic block 7 is positioned in the mounting hole 9.
The structural principle is briefly described as follows: when the die is closed, the rear die forming block 1 and the front die forming block 15 are mutually closed, the surface of the closed front die forming block 15 is pressed against the return rod 16, so that the return rod 16 drives the ejector pin plate 3 and the ejector pin supporting plate 4 to return, the end surface of the forming sleeve 6 is level with the end surface of the forming rod 5 when the die is closed, molten plastic can uniformly flow to fill the whole forming cavity and completely exhaust gas, after the gas is exhausted, the end surface of the forming sleeve 6 is continuously subjected to the injection molding pressure of the molten plastic, the pressure can enable the forming sleeve 6 to drive the ejector pin plate 3 to compress the elastic block 7 to move, so that a final forming cavity with the end surface of the forming sleeve 6 lower than the end surface of the forming rod 5 is formed, and a circular plastic sheet with a groove in the middle is injected; when the injection molding machine is used for demolding, the rear mold molding block 1 and the front mold molding block 15 are separated, the ejector rod 17 connected with the power system of the injection molding machine pushes the ejector pin plate 3 and the ejector pin supporting plate 4 to move, the ejector pin plate 3 and the ejector pin supporting plate 4 drive the molding sleeve 6 and the return rod 16 to eject, and the molding sleeve 6 ejects a product after injection molding.
The variable cavity mold provided by the embodiment of the utility model is described in detail, and the principle and the embodiment of the utility model are explained by applying specific examples, and the description of the embodiment is only used for helping to understand the method and the core idea of the utility model; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (4)
1. The utility model provides a but variable die cavity mould, includes back mould shaping piece, bottom plate, thimble board and with thimble board fixed connection's thimble layer board, the ejector pin is fixed as an organic whole with thimble board and thimble layer board, its characterized in that: still including shaping pole, shaping sleeve and elastic block, be equipped with the shaping hole on the back mould shaping piece, the shaping sleeve is located the shaping hole, and the shaping pole is located the shaping sleeve, and the terminal surface of shaping sleeve and shaping pole constitutes the profile, the shaping pole passes thimble board and thimble layer board and is connected with the bottom plate, the shaping sleeve is fixed as an organic whole with thimble board and thimble layer board, the elastic block sets up between thimble layer board and bottom plate, and can drive thimble board and thimble layer board compression elastic block and remove when shaping telescopic terminal surface receives the extrusion.
2. A variable cavity mold according to claim 1, wherein: the thimble supporting plate is provided with a mounting hole, and one end of the elastic block is positioned in the mounting hole.
3. A variable cavity mold according to claim 1, wherein: the bottom plate is provided with a bottom countersunk hole, one end of the forming rod is provided with an annular rod cap matched with the bottom countersunk hole, and the rod cap is locked in the countersunk hole through the lower template.
4. A variable cavity mold according to claim 1, wherein: the ejector pin plate is provided with a plate counter bore, the end part of the molding sleeve is provided with an annular cylinder cap matched with the plate counter bore, and the cylinder cap is locked in the counter bore through the ejector pin supporting plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023333927.7U CN215550474U (en) | 2020-12-30 | 2020-12-30 | Variable cavity mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023333927.7U CN215550474U (en) | 2020-12-30 | 2020-12-30 | Variable cavity mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215550474U true CN215550474U (en) | 2022-01-18 |
Family
ID=79816004
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023333927.7U Active CN215550474U (en) | 2020-12-30 | 2020-12-30 | Variable cavity mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215550474U (en) |
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2020
- 2020-12-30 CN CN202023333927.7U patent/CN215550474U/en active Active
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