A mold structure of a compression molding mold with a special reset device
By introducing a combination of inclined guide pillars, inclined wedges, and multiple reset devices into the pressure molding die, the problem of impact damage to the slider structure during reset is solved, achieving precise positioning and stable demolding of the slider insert, extending the service life of the mold and improving the molding quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUIZHOU ZHENHUA HUALIAN ELECTRONICS
- Filing Date
- 2025-07-01
- Publication Date
- 2026-07-03
AI Technical Summary
Conventional slider-structured pressure molds are prone to damage to the mold forming inserts during reset, making it impossible to achieve stable product demolding.
A special reset device is adopted, including a combination of inclined guide pillars, inclined wedges, slider inserts and multiple reset devices. The inclined guide pillars and inclined wedges provide driving force through cooperation. The slider insert is precisely limited during mold closing to avoid collision, and its maximum stroke is limited by the stop to ensure stable demolding.
It achieves precise positioning of the slider insert, protects the mold forming insert, extends the mold life, and ensures the stability of the mold structure and high-efficiency molding quality.
Smart Images
Figure CN224446530U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of dental rubber mold technology, specifically relating to a pressure molding mold structure with a special reset device. Background Technology
[0002] like Figures 1-3 As shown, a type of pressure-sealed cover part has a folded outer shape and inner ring. If formed using a conventional upper and lower parting mold structure, demolding cannot be achieved. Therefore, this product must be formed using a slider structure. Conventional slider-structure molds are prone to damage to the mold inserts during reset. Chinese utility model patent CN202592674U discloses an injection mold with a slider-first reset mechanism. This utility model has advantages such as simple structure, low production cost, convenient installation, debugging, and maintenance, reliable operation, and good stability. However, it does not solve the problem proposed in this solution. Utility Model Content
[0003] In order to solve the above problems, this utility model aims to provide a special resetting device for the pressure molding die structure.
[0004] To achieve the above objectives, the present invention adopts the following technical solution: a pressure molding die structure with a special reset device, including an upper template and a lower template disposed below it, wherein the upper template is connected with an inclined guide post and an inclined wedge, and the inclined guide post passes through a slider insert disposed on the lower template and contacts a middle pad disposed at the lower end of the lower template.
[0005] A third reset device is also connected to the upper template, and a second reset device is provided on the middle pad. The lower end of the second reset device corresponds to the first reset device. The third reset device moves down and drives the second reset device to rotate and contact the first reset device.
[0006] Furthermore, the upper mold base plate is positioned above the upper mold template, the lower mold template is positioned above the middle pad plate, the middle pad plate is supported on a pair of pads, and a top rod pad plate and a top rod fixing plate are sequentially arranged from bottom to top between the two pads.
[0007] Furthermore, an upper mold insert is provided in the middle of the upper mold plate, and a lower mold insert is provided in the middle of the lower mold plate. The upper mold insert and the lower mold insert are in a corresponding fit relationship along the mold closing direction.
[0008] Furthermore, the wedge is fixed to the bottom surface of the upper template, and its lower end is provided with an inclined surface. The outer side of the slider insert is provided with an inclined surface that matches the inclined surface of the wedge. The two inclined surfaces are parallel and fit together.
[0009] Furthermore, the inner side of the slider insert contacts and fits against the lower mold insert, and a stop is provided at the lower outer end of the slider insert.
[0010] Furthermore, the slider insert has an inclined guide hole, one end of the middle pad is an inclined surface, and the inclined guide post passes through the inclined guide hole of the slider insert and contacts the inclined surface of the middle pad.
[0011] Furthermore, the first reset device is a fixing member located on the top rod fixing plate and the top rod pad plate, and the second reset device and the third reset device include a fixing member and a top rod connected to the fixing member.
[0012] Furthermore, the fixing component of the third reset device is set on the upper template, the top rod is arranged vertically along the upper template, the fixing component of the second reset device is set on the middle pad, and the top rod is arranged obliquely to contact the first reset device set on the top rod fixing plate.
[0013] Furthermore, a fixing component is also provided on the middle pad, which limits the push rod of the third reset device when the mold is closed.
[0014] Compared with the prior art, the present invention has the following advantages:
[0015] 1. The reset device of this utility model uses three sets of devices to precisely limit the slider insert during mold closing, preventing excessive movement and collision with other components, effectively protecting the mold forming insert and extending the mold's service life. Simultaneously, the stop block limits the maximum stroke of the slider insert during mold opening, preventing it from detaching from the mold and ensuring the stability of the mold structure.
[0016] 2. This utility model can achieve smooth transmission and efficient molding. The inclined wedge and inclined guide post cooperate to enable the slider insert to provide driving force during the mold closing process to achieve the molding of special shapes. It can demold and ensure the molding quality of the product. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the specific embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 This is a product drawing of the molded parts in this utility model;
[0019] Figure 2 for Figure 1 AA section view;
[0020] Figure 3 for Figure 1 BB cross-sectional view;
[0021] Figure 4This is a front view of the pressure molding die for the special reset device in this utility model;
[0022] Figure 5 This is a top view of the pressure molding die for the special reset device in this utility model;
[0023] In the figure, 1-upper mold base plate, 2-upper template, 3-lower template, 4-middle pad plate, 5-pad, 6-ejector fixing plate, 7-ejector pad plate, 8-first reset device, 9-second reset device, 10-third reset device, 11-stop block, 12-lower mold insert, 13-wedge, 14-upper mold insert, 15-slider insert, 16-slanted guide post. Detailed Implementation
[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. However, it should not be construed that the scope of the subject matter of the present invention is limited to the following embodiments. Any modifications, substitutions and alterations made based on ordinary technical knowledge and conventional means in the art without departing from the above-described technical concept of the present invention are included within the scope of the present invention.
[0025] Reference Figures 4-5 The stop block 11 is used for limiting the fit. The lower mold insert 12 and the upper mold insert 14 are key inserts for mold forming, respectively. The wedge 13, the slider insert 15, and the inclined guide post 16 form a transmission and fit structure for actions such as lateral core pulling. The mold forming function is achieved through the cooperation of each component. The first reset device 8, the second reset device 9, and the third reset device 10 cooperate with each other to limit the slider insert and prevent the forming insert from being damaged. Before the mold is closed, the rubber material is placed in the lower mold insert 12. When the mold is closed, the upper mold plate 2 and the lower mold plate 3 gradually close. The slider insert 15 is driven to move inward by the inclined guide post 16. The third reset device 10, which is fixed to the upper mold plate 2, moves downward and drives the second reset device 9 to rotate. After the second reset device 9 touches the first reset device 8, the mold is closed and the slider insert 15 stops moving. The reset device plays a limiting role in preventing the slider insert 15 from colliding and being damaged. After the material is formed in the cavity, the mold begins to demold, the upper and lower templates separate, the slider insert 15 is driven outward by the inclined guide post 16, and is limited by the stop block 11 to prevent it from sliding out of the mold. The second reset device 9 is driven by the third reset device 10 to rotate, and is limited by the first reset device 8 on the middle pad plate 4. After demolding, the molded part is taken out, thus completing one part production process.
[0026] Example:
[0027] Mold Closing Process: With the mold in the open state, the upper mold plate 2 and lower mold plate 3 are separated. The slider insert 15 is located at its outer limit position, limited by the stop block 11. The upper mold base plate 1 drives the upper mold plate 2 downwards, and the inclined guide post 16 moves downwards accordingly, pulling the slider insert 15 outwards towards the mold center through the guide hole. The inclined wedge 13 is fixed to the bottom surface of the upper mold plate 2. When the mold begins to close, the inclined wedge 13 moves downwards synchronously with the upper mold plate 2. Its inclined working surface first contacts the slider insert 15 obliquely and generates pressure, pushing the slider insert 15 to slide along the mold center direction. Before the inclined guide post 16 is fully inserted into the guide hole of the slider insert 15, the inclined wedge 13 provides initial driving force; as the upper mold continues to descend, the inclined guide post 16 gradually inserts into the guide hole, working together with the inclined wedge 13 to ensure that the slider insert 15 moves smoothly and accurately inwards to the forming position.
[0028] The third reset device 10 moves downward with the upper template 2, and its push rod pushes the push rod of the second reset device 9 to rotate. When the push rod of the second reset device 9 rotates to contact the first reset device 8, the mold closes. At this time, the slider insert 15 stops moving. The reset device, through contact limiting, prevents the slider insert 15 from moving excessively and causing a collision.
[0029] Mold opening process: After molding is completed, the upper mold base plate 1 drives the upper mold plate 2 to move upward, and the inclined guide post 16 moves upward and separates from the inclined surface of the middle pad plate 4. Then, the inclined guide post 16 pulls the slider insert 15 outward through the guide hole, while the second reset device 9 assists the slider insert 15 to quickly return to its original position. The slider insert 15 moves outward to the initial position and is limited by the stop block 11 to prevent it from sliding out of the mold.
[0030] The resetting action of the resetting device causes the third resetting device 10 to move upward with the upper template 2, and its push rod disengages from the push rod of the second resetting device 9. The push rod of the second resetting device 9 returns to its initial position under its own elasticity or gravity, separating from the first resetting device 8.
[0031] The above provides a detailed description of the pressure molding die structure of a special reset device provided by this utility model. Specific examples have been used to illustrate the structure and working principle of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core idea of this utility model. It should be noted that those skilled in the art can make several improvements and modifications to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the scope of protection of the claims of this utility model.
Claims
1. A mold structure of a compression molding mold with a special reset device, comprising an upper mold plate (2) and a lower mold plate (3) disposed below the same, characterized in that: The upper template (2) is connected with a slanted guide post (16) and a slanted wedge (13). The slanted guide post (16) passes through the slider insert (15) set on the lower template (3) and contacts the middle pad (4) set at the lower end of the lower template (3). A third reset device (10) is also connected to the upper template (2), and a second reset device (9) is provided on the middle pad (4). The lower end of the second reset device (9) corresponds to the first reset device (8). The third reset device (10) moves down and drives the second reset device (9) to rotate and contact the first reset device (8).
2. The mold structure of claim 1, wherein: An upper mold base plate (1) is provided above the upper template (2), and the lower template (3) is provided above the middle pad plate (4). The middle pad plate (4) is supported on a pair of pads (5). Between the two pads (5), a top rod pad plate (7) and a top rod fixing plate (6) are arranged sequentially from bottom to top.
3. The mold structure of claim 1, wherein: An upper mold insert (14) is provided in the middle of the upper template (2), and a lower mold insert (12) is provided in the middle of the lower template (3). The upper mold insert (14) and the lower mold insert (12) are in a corresponding fit relationship along the mold closing direction.
4. The mold structure of claim 1, wherein: The wedge (13) is fixed to the bottom surface of the upper template (2), and its lower end is provided with an inclined surface. The outer side of the slider insert (15) is provided with an inclined surface that matches the inclined surface of the wedge (13). The two inclined surfaces are parallel and fit together.
5. The mold structure of claim 4, wherein: The inner side of the slider insert (15) contacts and fits the lower mold insert (12), and a stop block (11) is provided at the lower outer side of the slider insert (15).
6. The mold structure of claim 5, wherein: The slider insert (15) has an inclined guide hole, one end of the middle pad (4) is an inclined surface, and the inclined guide post (16) passes through the inclined guide hole of the slider insert (15) and contacts the inclined surface of the middle pad (4).
7. The mold structure of claim 1, wherein: The first reset device (8) is a fixing member located on the top rod fixing plate (6) and the top rod pad (7). The second reset device (9) and the third reset device (10) include a fixing member and a top rod connected to the fixing member.
8. The mold structure of claim 7, wherein: The fixing part of the third reset device (10) is set on the upper template (2), the top rod is arranged vertically along the upper template (2), the fixing part of the second reset device (9) is set on the middle pad (4), and the top rod is arranged at an inclination to contact the first reset device (8) set on the top rod fixing plate (6).
9. The mold structure of claim 1, wherein: The middle pad (4) is also provided with a fixing component, which limits the push rod of the third reset device (10) when the mold is closed.