Demolding structure with elastic block
By introducing a mold release structure of elastic blocks and springs into the mold, the problem of difficult demolding of traditional molds is solved, and easy demolding and precise molding of the parts are achieved, reducing costs and complexity.
Patent Information
- Application Number
- CN202422031789.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-21
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-08-21
AI Technical Summary
Traditional molds tend to cause damage to the parts and difficulty in demoulding during the demoulding process, especially for bending columnar structures, requiring complex thimble driving mechanisms and increased material costs.
A mold release structure with elastic block is designed, including a long columnar mold cavity and elastic cavity at the bottom of the upper mold. Using the cooperation of the elastic block and the spring, it is possible to easily release the mold of the workpiece, and avoid the thimble driving mechanism through the lifting and lowering of the elastic block and the guidance of the positioning block.
It realizes easy mold release of the parts, reduces material and processing difficulty, simplifies the mold structure, and improves mold release efficiency and molding accuracy.
Smart Images
Figure CN223115760U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of wax injection molds, and particularly relates to a demolding structure with elastic blocks. Background Art
[0002] The upper and lower cavities that play a molding role in the standard mold structure are located on the upper template and the lower template respectively. Since the ejection system that plays a demolding role is located on one side of the lower template, in the mold research and design, it is necessary to retain the workpiece in the lower mold cavity, and then the workpiece is demolded by the ejector pins of the ejection system, and finally the molding process is completed.
[0003] In this way, the demolding force of the upper template needs to be less than that of the lower template. If this requirement is not met, the workpiece will adhere to the upper template, and the workpiece will be damaged and it will be difficult to demold during mold opening. For the molds of some products with special shapes, in order to demold smoothly, it is necessary to design an auxiliary demolding mechanism on the upper mold. The complexity of the auxiliary demolding mechanism is directly related to the processing difficulty and the mold cost.
[0004] The product targeted by this solution is a bent columnar structure, as Figure 2 shown. The traditional method is to eject with ejector pins. Not only does it require a driving mechanism for driving the ejector pins, but also in order to ensure the accurate guiding of the ejector pins, the height of the upper mold will be appropriately increased, and the material cost will also increase.
[0005] In view of the above problems, the utility model designs and manufactures a demolding structure with elastic blocks to overcome the above defects. Content of the Utility Model
[0006] For the problems existing in the prior art, a demolding structure with elastic blocks provided by the utility model can assist the upper mold to easily demold the workpiece, and does not affect the molding of the workpiece after mold closing.
[0007] In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: A demolding structure with elastic blocks, including an upper mold, a long columnar mold cavity is arranged at the bottom of the upper mold, and the long columnar mold cavity includes a fixed cavity in the middle and elastic cavities at both ends;
[0008] The elastic cavity is arranged on an elastic block, and the elastic block can elastically lift relative to the upper mold;
[0009] At the position of the upper mold corresponding to the elastic block, a lifting guide groove is arranged, and a plurality of springs are arranged between the elastic block and the bottom of the lifting guide groove. The elastic block can lift in the lifting guide groove by compressing the springs;
[0010] Positioning blocks are arranged on both sides of the elastic block, the positioning blocks are arranged at the bottom of the upper mold, and the positioning blocks can limit the extending position of the elastic block.
[0011] Preferably, a plurality of spring positioning holes are provided at the bottom of the lifting guide groove, and the springs are arranged in the spring positioning holes.
[0012] Preferably, a lower mold is provided below the upper mold. When the upper mold and the lower mold are closed, the elastic block presses the spring completely into the spring positioning hole, and the elastic block contacts the bottom of the lifting guide groove.
[0013] Preferably, when the upper mold and the lower mold are opened, the elastic block pops out of the lifting guide groove under the action of the spring, and the workpiece is separated from the fixed cavity under the drive of the elastic cavities at both ends.
[0014] Preferably, positioning grooves are provided on both sides of the elastic block, and the positioning blocks can cooperate with the positioning grooves. The depth of the positioning grooves is greater than the thickness of the positioning blocks.
[0015] Preferably, the positioning grooves are arc grooves, the positioning blocks are cylindrical blocks, and the elastic block can be guided to lift through the arc grooves and the cylindrical blocks.
[0016] Preferably, the positioning blocks are detachably connected to the bottom of the upper mold by bolts.
[0017] The beneficial effects of the utility model are as follows:
[0018] 1. The utility model utilizes the elastic force of the spring to drive the movement of the elastic block provided with the elastic cavity, ensuring that the workpiece is separated from the fixed cavity under the drive of the elastic blocks at both ends when the mold is opened; when the mold is closed, the elastic block can be pressed into the lifting guide groove to ensure the continuity of the fixed cavity and the elastic cavities at both ends, so that the required workpiece can be formed during wax injection.
[0019] 2. The utility model eliminates the need to set ejector pins on the upper mold and does not require a driving mechanism for driving the ejector pins. Only by using the elastic block can the demolding problem of the product on the upper mold be easily solved.
[0020] 3. The utility model uses the positioning blocks not only to limit the movement position of the elastic block, but also to cooperate with the positioning grooves on both sides of the positioning block and the elastic block, playing a guiding role in the movement of the elastic block and ensuring the movement accuracy of the elastic block. Description of the Drawings
[0021] Figure 1 It is an exploded view when the upper mold of a demolding structure with an elastic block is in use;
[0022] Figure 2 It is a schematic diagram of the existing demolding structure.
[0023] In the figure: 1-upper mold, 2-elastic block, 3-positioning block, 4-positioning groove, 5-spring, 6-lifting guide groove, 7-fixed cavity, 8-elastic cavity. Detailed Embodiment
[0024] For the convenience of those skilled in the art to understand, the following further describes the present utility model in conjunction with the accompanying drawings.
[0025] As Figure 1 shown, a demolding structure with a spring block includes an upper mold 1. A long-columnar mold cavity is provided at the bottom of the upper mold 1. The long-columnar mold cavity includes a fixed cavity 7 in the middle and elastic cavities 8 at both ends. The fixed cavity 7 is directly provided at the bottom of the upper mold 1, and the elastic cavity 8 is provided on the elastic block 2. The elastic block 2 can elastically lift and lower relative to the upper mold 1.
[0026] At the position of the upper mold 1 corresponding to the elastic block 2 of the present utility model, a lifting guide groove 6 is provided. A plurality of springs 5 are provided between the elastic block 2 and the bottom of the lifting guide groove 6. The elastic block 2 compressing the springs 5 can enable the elastic block 2 to lift and lower in the lifting guide groove 6; the elastic force of the springs 5 is used to drive the elastic block 2 provided with the elastic cavity 8 to move, ensuring that the workpiece is separated from the fixed cavity 7 under the drive of the elastic blocks 2 at both ends during mold opening; and during mold closing, the elastic block 2 can be pressed into the lifting guide groove 6 to ensure the continuity of the fixed cavity 7 and the elastic cavities 8 at both ends, so that the required workpiece can be formed during wax injection.
[0027] Positioning blocks 3 are provided on both sides of the elastic block 2. The positioning blocks 3 are provided at the bottom of the upper mold 1. The positioning blocks 3 are detachably connected to the bottom of the upper mold 1 through bolts. The positioning blocks 3 can limit the protruding position of the elastic block 2 to prevent the elastic block 2 from disengaging from the lifting guide groove 6. Positioning grooves 4 are provided on both sides of the elastic block 2. The positioning blocks 3 can cooperate with the positioning grooves 4. The depth of the positioning grooves 4 is greater than the thickness of the positioning blocks 3. The positioning grooves 4 are preferably set as arc grooves, and the positioning blocks 3 are set as cylindrical blocks. The elastic block 2 can be guided to lift and lower through the arc grooves and the cylindrical blocks, ensuring the movement accuracy of the elastic block 2 through the movement guidance of the elastic block 2.
[0028] A plurality of spring positioning holes are provided at the bottom of the lifting guide groove 6 of the present utility model. The springs 5 are arranged in the spring positioning holes. A lower mold is provided below the upper mold 1. When the upper mold 1 and the lower mold are closed, the elastic block 2 completely presses the springs 5 into the spring positioning holes, and the elastic block 2 contacts the bottom of the lifting guide groove 6. When the upper mold 1 and the lower mold are opened, the elastic block 2 pops out of the lifting guide groove 6 under the action of the springs 5, and the workpiece is separated from the fixed cavity 7 under the drive of the elastic cavities 8 at both ends.
[0029] Compared with the traditional structure, the entire structure eliminates the need to set ejector pins on the upper mold 1 and does not require a driving mechanism for driving the ejector pins. Only by using the elastic block 2 can the demolding problem of the product on the upper mold 1 be easily solved.
[0030] It should be understood that the use of these embodiments is only for illustrating the present utility model rather than intending to limit the protection scope of the present utility model. In addition, it should also be understood that after reading the technical content of the present utility model, those skilled in the art can make various changes, modifications and / or variations to the present utility model, and all these equivalent forms also fall within the protection scope defined by the appended claims of this application.
Claims
1. A demolding structure with a spring block, characterized in that It includes an upper mold, and a long-columnar mold cavity is provided at the bottom of the upper mold. The long-columnar mold cavity includes a fixed cavity in the middle and elastic cavities at both ends. The elastic cavity is arranged on an elastic block, and the elastic block can elastically lift relative to the upper mold. At the position of the upper mold corresponding to the elastic block, a lifting guide groove is provided. A number of springs are provided between the elastic block and the bottom of the lifting guide groove. The elastic block can lift in the lifting guide groove by compressing the springs. Positioning blocks are provided on both sides of the elastic block. The positioning blocks are arranged at the bottom of the upper mold, and the positioning blocks can limit the protruding position of the elastic block.
2. The demolding structure with a spring block according to claim 1, characterized in that, A number of spring positioning holes are provided at the bottom of the lifting guide groove, and the springs are arranged in the spring positioning holes.
3. The demolding structure with a spring block according to claim 2, characterized in that, A lower mold is provided below the upper mold. When the upper mold and the lower mold are closed, the elastic block completely presses the springs into the spring positioning holes, and the elastic block contacts the bottom of the lifting guide groove.
4. A demolding structure with a spring block according to claim 1, characterized in that, When the upper mold and the lower mold are opened, the elastic block pops out of the lifting guide groove under the action of the springs, and the workpiece is separated from the fixed cavity under the drive of the elastic cavities at both ends.
5. The demolding structure with a spring block according to claim 1, characterized in that, Positioning grooves are provided on both sides of the elastic block. The positioning blocks can cooperate with the positioning grooves, and the depth of the positioning grooves is greater than the thickness of the positioning blocks.
6. The demolding structure with a spring block according to claim 5, characterized in that, The positioning grooves are arc grooves, and the positioning blocks are cylindrical blocks. The elastic block can be guided to lift through the arc grooves and the cylindrical blocks.
7. The demolding structure with a spring block according to claim 1, characterized in that, The positioning blocks are detachably connected to the bottom of the upper mold by bolts.