Stable high-temperature and high-pressure injection mold
By using a combination structure of sealing block, lifting component and return spring in high temperature and high pressure injection mold, the problem of insufficient mold sealing performance is solved, and effective sealing of plastic melt under high temperature and high pressure is achieved, ensuring product quality and reducing maintenance costs.
Patent Information
- Application Number
- CN202422199790.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-09
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2034-09-09
AI Technical Summary
If the sealing performance of a high-temperature, high-pressure injection mold is insufficient, the molten plastic may leak, leading to product defects and increased cleaning costs.
The combination structure of sealing block, lifting component and return spring ensures that the mold maintains good sealing under high temperature and high pressure. The sealing baffle fits with the core fixing block to prevent gas leakage and automatically resets after injection molding.
It improves the sealing performance of the mold, avoids leakage of molten plastic, ensures product quality, and reduces maintenance costs.
Smart Images
Figure CN223644182U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to injection mold technical field, concretely relates to a stable high temperature and high pressure injection mold. BACKGROUND
[0002] In some environments, especially those that require high strength, high precision and can maintain stable performance in extreme environment plastic product production field, often need to use high temperature and high pressure injection mold to carry out product production and manufacture.
[0003] High temperature and high pressure injection mold may exist in the production process Sealing effect reduces, under high temperature and high pressure environment, if the sealing performance of the mold is insufficient, plastic melt can leak out from the gap or interface of the mold in the injection process. This not only will cause the waste of raw materials, but also will increase the difficulty and cost of cleaning the mold, due to pressure leakage, the pressure in the mold cavity may not be stable, resulting in plastic melt unable to fill the cavity uniformly, thereby producing bubbles, shrinkage, lack of material and other defects. These defects will directly affect the appearance and performance of the product, reduce the qualified rate of products.
[0004] Therefore, it is necessary to invent a stable high temperature and high pressure injection mold to solve the above problems. CONTENT OF THE UTILITY MODEL
[0005] In order to solve the problems of the prior art, the utility model aims at providing a stable high temperature and high pressure injection mold, which solves the problem that plastic melt may leak out from the gap or interface of the mold in the injection process if the sealing performance of the mold is insufficient in actual use.
[0006] In order to achieve the above object, the utility model adopts the following technical scheme:
[0007] A stable high temperature and high pressure injection mold, comprising the movable die plate, the fixed die plate and the core body contained by the injection mold, the inside of the movable die plate is provided with a sealing block for sealing the mold parting surface, the outer side wall of the sealing block is provided with a jacking assembly for controlling the lifting thereof, the inside wall of the sealing block is provided with a sealing baffle at the bottom end, the inside wall of the sealing block is provided with a core fixing block fixedly installed in the inside of the movable die plate for fixing the core body, the bottom end of the fixed die plate is detachably provided with a sealing groove for accommodating the top end of the sealing block, when the sealing block slides upward, the top end of the sealing baffle is in close contact with the bottom end outside of the core fixing block.
[0008] As a preferred scheme of the utility model, the top end of the sealing baffle is provided with a plurality of third return springs for resetting, the top end of the sealing baffle is further provided with a sealing gasket, and the sealing gasket is sleeved on the outside of the third return spring.
[0009] As a preferred scheme of the utility model, the jacking assembly is detachably installed on one side of the movable mold plate, the inside of the jacking assembly is provided with a longitudinal slider, the bottom end of the longitudinal slider is provided in an inclined manner, and the top end of the longitudinal slider is provided with a damping block for preventing scratching of the fixed mold plate.
[0010] As a preferred scheme of the utility model, the side, on which the inclined surface of the longitudinal slider is located, is provided with a first transverse slider, the inclined surface of the first transverse slider is attached to the inclined surface of the longitudinal slider, and when the longitudinal slider slides in the longitudinal direction, the first transverse slider slides in the horizontal direction.
[0011] As a preferred scheme of the utility model, the end of the first transverse slider is detachably installed with a connecting rod, the inside of the jacking assembly is further provided with a positioning vertical plate, the connecting rod penetrates and extends to the outside of the positioning vertical plate, and the connecting rod located outside the positioning vertical plate is detachably connected with a second transverse slider.
[0012] As a preferred scheme of the utility model, the outside of the connecting rod on both sides of the positioning vertical plate is sleeved with a first reset spring, the outside wall of the sealing block is provided with a side inclined surface, and the inclined surface of the second transverse slider is attached to the side inclined surface.
[0013] As a preferred scheme of the utility model, both sides of the longitudinal slider are provided with protrusions, the inside wall of the jacking assembly is provided with a sliding groove for sliding of the protrusions, and the bottom end of the protrusion is provided with a second reset spring for upward reset of the longitudinal slider.
[0014] In the above technical scheme, the utility model provides technical effects and advantages:
[0015] In the utility model, when the fixed mold plate and the movable mold plate are mutually closed, the fixed mold plate extrudes the jacking longitudinal slider, the second transverse slider extrudes the side inclined surface, the top end of the sealing block extends to the inside of the sealing groove, the sealing of the parting surface is realized, the pressure leakage in the process of injection molding is avoided, the outside bottom wall of the sealing baffle and the core fixing block is attached, the sealing effect of the bottom is realized, the gas is prevented from leaking outward through the edge of the core fixing block, the mold can bear higher pressure, the quality of the product is ensured, after the injection molding is completed, the longitudinal slider is reset under the action of the second reset spring, the first transverse connecting rod and the second transverse connecting rod are reset under the action of the first reset spring, the sealing block is reset under the action of the third reset spring on the sealing baffle, the sealing block is wholly reset to the starting point, the demolding of the product is facilitated, the probability of damage of the sealing block is reduced, and the product maintenance cost is reduced. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1This is a schematic diagram of the overall structure of this utility model;
[0017] Figure 2 This is a top view of the moving template structure of this utility model;
[0018] Figure 3 This is a partial structural diagram of the lifting component of this utility model;
[0019] Figure 4 This is a schematic diagram of the internal structure of the lifting component of this utility model;
[0020] Figure 5 This is a schematic diagram of the sealing block structure of this utility model;
[0021] Figure 6 This is a partial cross-sectional view of the template structure of this utility model.
[0022] Explanation of reference numerals in the attached drawings: 1. Moving template; 2. Fixed template; 3. Lifting assembly; 301. Longitudinal slider; 302. Damping block; 303. First transverse slider; 304. Connecting rod; 305. First return spring; 306. Second transverse slider; 307. Positioning plate; 308. Protrusion; 309. Second return spring; 310. Slide groove; 4. Sealing block; 401. Lateral inclined surface; 402. Sealing baffle; 403. Sealing gasket; 404. Third return spring; 5. Core fixing block; 6. Core body; 7. Sealing groove. Detailed Implementation
[0023] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.
[0024] This utility model provides, for example Figures 1-6 The illustration shows a stable high-temperature and high-pressure injection mold, comprising a moving mold plate 1, a fixed mold plate 2, and a core body 6. The moving mold plate 1 has a sealing block 4 inside for sealing the mold parting surface. The outer wall of the sealing block 4 has a lifting assembly 3 for controlling its lifting. The bottom end of the inner wall of the sealing block 4 has a sealing baffle 402. The inner wall of the sealing block 4 also has a core fixing block 5 fixedly installed inside the moving mold plate 1 for fixing the core body 6. The bottom end of the fixed mold plate 2 has a detachably installed sealing groove 7 for receiving the top of the sealing block 4. When the sealing block 4 slides upward, the top of the sealing baffle 402 fits against the bottom outer end of the core fixing block 5. The sealing groove 7 is made of high-temperature resistant rubber material. The sealing groove 7 seals the top and end faces of the sealing block 4, thus ensuring a good sealing effect under high-temperature conditions.
[0025] The top end of the sealing baffle 402 is provided with a plurality of third return springs 404 for resetting. The top end of the sealing baffle 402 is also provided with a sealing gasket 403. The sealing gasket 403 is sleeved on the outside of the third return springs 404. The sealing gasket 403 is used to seal the core fixing block 5. At the same time, the third return spring 404 can realize the effect of automatically resetting the sealing block 4, thereby avoiding the problem of the sealing block 4 protruding and affecting the demolding of the parts, which would reduce the work efficiency.
[0026] The lifting assembly 3 is detachably installed on one side of the moving template 1. The lifting assembly 3 is provided with a longitudinal slider 301 inside. The bottom end of the longitudinal slider 301 is inclined. The top end of the longitudinal slider 301 is provided with a damping block 302 to prevent scratching the fixed template 2. After being squeezed by the fixed template 2, the lifting assembly 3 achieves the effect of lifting the sealing block 4 through the arrangement of multiple sliders, ensuring that the sealing performance inside the mold is in the best state during the operation, thereby ensuring the production effect of the parts.
[0027] A first transverse slider 303 is provided on one side of the inclined surface of the longitudinal slider 301. The inclined surface of the first transverse slider 303 is in contact with the inclined surface of the longitudinal slider 301. When the longitudinal slider 301 slides longitudinally, the first transverse slider 303 slides horizontally. When the longitudinal slider 301 is pressed and in contact with the top surface of the moving template 1, the end face of the sealing block 4 is located inside the sealing groove 7, thereby improving the sealing effect.
[0028] A connecting rod 304 is detachably installed at the end of the first transverse slider 303. A positioning plate 307 is also provided inside the lifting assembly 3. The connecting rod 304 passes through and extends to the outside of the positioning plate 307. The connecting rod 304 located on the outside of the positioning plate 307 is detachably connected to a second transverse slider 306. The positioning plate 307 is used to control the sliding direction of the connecting rod 304, ensuring that the first transverse slider 303 and the second transverse slider 306 slide back and forth in the horizontal direction, improving the transmission accuracy, thereby ensuring the sealing effect.
[0029] The connecting rods 304 on both sides of the positioning plate 307 are each fitted with a first return spring 305. The outer wall of the sealing block 4 is provided with a side inclined surface 401. The inclined surface of the second transverse slider 306 is in contact with the side inclined surface 401. The first return springs 305 provided on both sides of the positioning plate 307 can promptly drive the connecting rods 304 and the transverse sliders on both sides to return to the designated position, leaving sufficient space for the sealing block 4 to fall back.
[0030] The longitudinal slider 301 has protrusions 308 on both sides, and the inner wall of the lifting assembly 3 has a groove 310 for sliding the protrusions 308. The bottom end of the protrusions 308 is provided with a second return spring 309 for the longitudinal slider 301 to return to its upward position. The groove 310 and the protrusions 308 ensure that the longitudinal slider 301 slides downward or upward in the vertical direction. The second return spring 309 can return the slider to its original position after the mold injection is completed, which facilitates subsequent sealing.
[0031] This invention, through the setting of the sealing block 4, when the fixed template 2 and the moving template 1 are closed together, the fixed template 2 presses and lifts the longitudinal slider 301, causing the second transverse slider 306 to press the inclined side surface 401, so that the top of the sealing block 4 extends into the interior of the sealing groove 7, thereby achieving sealing of the parting surface and preventing pressure leakage during injection molding. The sealing baffle 402 is attached to the outer bottom wall of the core fixing block 5, thereby achieving the effect of sealing its bottom, thus preventing gas from leaking outward through the edge of the core fixing block 5, allowing the mold to withstand higher pressure, thereby ensuring product quality. After injection molding is completed, the longitudinal slider 301 is reset under the action of the second return spring 309, the first transverse connecting rod 304 and the second transverse connecting rod 304 are reset under the action of the first return spring 305, and the sealing block 4 is reset under the action of the third return spring 404 on the sealing baffle 402, so that the sealing block 4 is reset to the starting point as a whole, which facilitates product demolding, reduces the probability of damage to the sealing block 4, and reduces product maintenance costs.
[0032] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.
Claims
1. A stable high-temperature and high-pressure injection mold, characterized in that: The injection mold includes a moving template (1), a fixed template (2), and a core body (6). The moving template (1) is provided with a sealing block (4) for sealing the mold parting surface. The outer wall of the sealing block (4) is provided with a lifting component (3) for controlling its lifting. The bottom end of the inner wall of the sealing block (4) is provided with a sealing baffle (402). The inner wall of the sealing block (4) is provided with a core fixing block (5) for fixing the core body (6) and is fixedly installed inside the moving template (1). The bottom end of the fixed template (2) is detachably provided with a sealing groove (7) for receiving the top end of the sealing block (4). When the sealing block (4) slides upward, the top end of the sealing baffle (402) fits against the bottom end of the outer side of the core fixing block (5).
2. The stable high-temperature and high-pressure injection mold according to claim 1, characterized in that: The top end of the sealing baffle (402) is provided with a plurality of third reset springs (404) for resetting, and the top end of the sealing baffle (402) is also provided with a sealing gasket (403), which is sleeved on the outside of the third reset springs (404).
3. The stable high-temperature and high-pressure injection mold according to claim 1, characterized in that: The lifting assembly (3) is detachably installed on one side of the moving template (1). The lifting assembly (3) is provided with a longitudinal slider (301). The bottom end of the longitudinal slider (301) is inclined. The top end of the longitudinal slider (301) is provided with a damping block (302) to prevent scratching the fixed template (2).
4. The stable high-temperature and high-pressure injection mold according to claim 3, characterized in that: A first transverse slider (303) is provided on one side of the inclined surface of the longitudinal slider (301). The inclined surface of the first transverse slider (303) is in contact with the inclined surface of the longitudinal slider (301). When the longitudinal slider (301) slides longitudinally, the first transverse slider (303) slides horizontally.
5. A stable high-temperature and high-pressure injection mold according to claim 4, characterized in that: The end of the first transverse slider (303) is detachably equipped with a connecting rod (304), and the lifting assembly (3) is also provided with a positioning plate (307). The connecting rod (304) passes through and extends to the outside of the positioning plate (307). The connecting rod (304) located on the outside of the positioning plate (307) is detachably connected to the second transverse slider (306).
6. A stable high-temperature and high-pressure injection mold according to claim 5, characterized in that: The connecting rods (304) on both sides of the positioning plate (307) are fitted with first reset springs (305) on their outer sides. The outer side wall of the sealing block (4) is provided with a side inclined surface (401). The inclined surface of the second transverse slider (306) is in contact with the side inclined surface (401).
7. A stable high-temperature and high-pressure injection mold according to claim 6, characterized in that: The longitudinal slider (301) is provided with protrusions (308) on both sides, the inner wall of the lifting assembly (3) is provided with a groove (310) for the protrusions (308) to slide, and the bottom end of the protrusions (308) is provided with a second return spring (309) for the longitudinal slider (301) to return to its original position.