Cold runner regulating valve for silica gel mold
By designing a cold runner regulating valve for silicone molds, the problem of uneven silicone flow was solved, enabling precise adjustment of silicone flow, reducing flash and insufficient glue, and lowering production costs and product defect rate.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- INTERPLEX METALFORMING (SHANGHAI) LTD
- Filing Date
- 2025-05-27
- Publication Date
- 2026-05-12
AI Technical Summary
In silicone mold production, existing technologies lack micro-control methods, resulting in uneven silicone flow in multi-cavity mold production, leading to process defects such as overflow, flash, and insufficient glue. Furthermore, mold structure adjustment is time-consuming, labor-intensive, costly, and results in a high product defect rate.
Design a cold runner regulating valve for silicone molds. By combining a balancing regulating valve, a connecting rod, a sliding rod, and an adjusting rod, the position of the sealing valve needle can be precisely adjusted, and the silicone flow rate can be dynamically adjusted.
It enables precise adjustment of silicone flow without modifying the mold structure, reducing overflow, flash, and insufficient glue, thereby lowering production costs and product defect rates.
Smart Images
Figure CN224224428U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of silicone molding die technology, and in particular to a cold runner regulating valve for silicone molds. Background Technology
[0002] In the production of multi-cavity products using silicone molds, defects such as overflow and insufficient glue often occur due to the flow characteristics of silicone material, resulting in weight and dimensional differences in products formed in different cavities within the same mold. Traditionally, to solve these problems, the dimensions of the mold runner are repeatedly modified to adjust the glue distribution. However, this method has significant limitations: firstly, adjusting the mold runner relies on the operator's experience, lacks quantitative standards, and makes it difficult to guarantee adjustment accuracy; secondly, each adjustment requires physical processing of the mold, which is not only time-consuming and labor-intensive but may also damage the mold structure, increasing production costs and product scrap rates. Furthermore, existing technologies lack micro-control methods for silicone flow, making it impossible to achieve dynamic balance in the filling process of each cavity, resulting in a persistently high defect rate during production.
[0003] Therefore, there is an urgent need for a technical solution that can achieve precise and micro-adjustment of silicone flow without modifying the mold structure, in order to solve the problem of uneven filling in multi-cavity mold production, while reducing process debugging costs and product defect rate. Utility Model Content
[0004] The main technical problem solved by this utility model is to provide a cold runner regulating valve for silicone molds, which can regulate the flow rate of silicone into the mold cavity and avoid or reduce overflow, flash, or insufficient glue.
[0005] To solve the above-mentioned technical problems, the present invention provides a cold runner regulating valve for silicone molds, comprising: a balance regulating valve, a connecting rod, a sliding rod, an adjusting rod, and a sealing valve needle. The balance regulating valve, connecting rod, sliding rod, and adjusting rod are disposed on a fixed mold plate. The balance regulating valve is threadedly engaged with the fixed mold plate to adjust its position on the fixed mold plate. One end of the connecting rod is connected to the balance regulating valve, and the other end is connected to the sliding rod. The sliding rod is connected to the adjusting rod and slides in engagement. The sealing valve needle is disposed on the adjusting rod and faces the cold runner nozzle. The adjusting rod and the sliding rod are arranged perpendicular to each other. The balance regulating valve is used to advance or retract the connecting rod that slides in engagement with the fixed mold plate. The connecting rod synchronously drives the sliding rod to move. A first push-pull inclined surface is provided at the end of the sliding rod near the adjusting rod, and a second push-pull inclined surface is provided at the end of the adjusting rod near the sliding rod. The second push-pull inclined surface slides in engagement with the first push-pull inclined surface to adjust the position of the sealing valve needle relative to the cold runner nozzle.
[0006] Preferably, the balance regulating valve includes an operating part, an intermediate column, and a first connecting part connected in sequence. The external thread that mates with the fixed mold plate is provided on the intermediate column. The first connecting part is rotatably engaged with the connecting rod. The operating part is located outside the fixed mold plate, which facilitates manual rotation and adjustment of the balance regulating valve to adjust its relative position on the fixed mold plate.
[0007] Preferably, the connecting rod is disposed inside the fixed mold plate and slides with the fixed mold plate. The end of the connecting rod near the balance regulating valve is provided with a first limiting groove that cooperates with the first connecting part. The first limiting groove is used to limit the position of the first connecting part and prevent the first connecting part from separating from the connecting rod. The first connecting part and the first limiting groove are rotated together.
[0008] Preferably, a second connecting part is provided at one end of the sliding rod near the connecting rod, and a second limiting groove is provided at one end of the connecting rod near the sliding rod. The second limiting groove is used to limit the position of the second connecting part and prevent the second connecting part from disengaging from the connecting rod. The second connecting part and the second limiting groove are rotatably engaged.
[0009] Preferably, the sliding rod has an inclined guide groove on the side near the first push-pull inclined surface, and the adjusting rod has an inclined guide block on the side near the second push-pull inclined surface, with the inclined guide block slidingly engaging with the inclined guide groove.
[0010] Preferably, a protective guide sleeve is fitted onto the adjusting rod, and the protective guide sleeve is set in the fixed mold plate. One end of the sliding rod passes through the protective guide sleeve and is connected to the adjusting rod.
[0011] The beneficial effects of this utility model are: by arranging a sealing valve needle at the cold runner nozzle and controlling the height position of the adjusting rod through a balance adjusting valve, the adjusting rod adjusts the gap between the sealing valve needle and the cold runner nozzle, thereby adjusting the silicone flow rate when entering the cavity. Attached Figure Description
[0012] Figure 1 This is a schematic diagram showing the positional relationship between this utility model and the fixed mold plate;
[0013] Figure 2 This is a schematic diagram of the overall structure of this utility model;
[0014] Figure 3 This is a schematic diagram of the structure of this utility model for removing the protective guide sleeve;
[0015] Figure 4 This is an exploded view of the present invention;
[0016] Figure 5 Figure 4 Enlarged schematic diagram of section A in the middle.
[0017] The components in the attached diagram are labeled as follows:
[0018] 1. Balance regulating valve; 11. Operating part; 12. Intermediate column; 13. First connecting part;
[0019] 2. Connecting rod; 21. First limiting slot; 22. Second limiting slot;
[0020] 3. Sliding rod; 31. First push-pull inclined surface; 32. Second connecting part; 33. Inclined guide groove;
[0021] 4. Adjusting rod; 41. Second push-pull inclined plane; 42. Incline guide block;
[0022] 5. Sealing valve needle;
[0023] 6. Protect the guide sleeve;
[0024] 7. Fixed mold fixing plate. Detailed Implementation
[0025] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.
[0026] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0029] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0030] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.
[0031] Unless otherwise specified, physical quantities in formulas should be understood as basic quantities of SI base units, or derived quantities derived from basic quantities through mathematical operations such as multiplication, division, differentiation, or integration.
[0032] Example:
[0033] refer to Figures 1-5 A cold runner regulating valve for silicone molds includes: a balance regulating valve 1, a connecting rod 2, a sliding rod 3, an adjusting rod 4, and a sealing valve needle 5. The balance regulating valve 1, connecting rod 2, sliding rod 3, and adjusting rod 4 are mounted on a fixed mold plate 7. Figure 1In the simplified diagram, the balance regulating valve 1 is threadedly engaged with the fixed mold plate 7 to adjust the position of the balance regulating valve 1 on the fixed mold plate 7 by rotation. One end of the connecting rod 2 is connected to the balance regulating valve 1, and the other end of the connecting rod 2 is connected to the sliding rod 3. The sliding rod 3 is connected to the adjusting rod 4 and is slidably engaged. The sealing valve needle 5 is set on the adjusting rod 4 and faces the cold runner nozzle. The axes of the adjusting rod 4 and the sliding rod 3 are arranged perpendicular to each other. The balance regulating valve 1 is used to advance and retract the connecting rod 2 that is slidably engaged with the fixed mold plate 7. The connecting rod 2 synchronously drives the sliding rod 3 to slide within the fixed mold plate 7. The end of the sliding rod 3 near the adjusting rod 4 has a first push-pull inclined surface 31, and the end of the adjusting rod 4 near the sliding rod 3 has a second push-pull inclined surface 41. The second push-pull inclined surface 41 is slidably engaged with the first push-pull inclined surface 31 to adjust the position of the sealing valve needle 5 relative to the cold runner nozzle. The sealing valve needle 5 penetrates the cold runner cooling plate and the fixed template to mate with the cold runner nozzle.
[0034] refer to Figure 2 ,- Figure 4 The balance regulating valve 1 includes an operating part 11, an intermediate column 12, and a first connecting part 13 connected in sequence. The operating part 11, the intermediate column 12, and the first connecting part 13 are integrally formed. The external thread that is threaded to the fixed mold plate 7 is opened on the intermediate column 12, so that the balance regulating valve 1 is threaded to the fixed mold plate 7 through the intermediate column 12. The balance regulating valve 1 is connected to the connecting rod 2 through the first connecting part 13, and the first connecting part 13 is rotatably engaged with the connecting rod 2. The operating part 11 is located outside the fixed mold plate 7, so that the relative position of the balance regulating valve 1 on the fixed mold plate 7 can be adjusted manually by turning the operating part 11, thereby adjusting the position of the adjusting rod 4, thereby adjusting the position of the sealing valve needle 5 relative to the cold runner nozzle, and thus dynamically adjusting the flow rate of silicone material entering the cavity through the cold runner nozzle.
[0035] refer to Figures 2-4 The connecting rod 2 is installed inside the fixed mold plate 7 and slides with the fixed mold plate 7. The end of the connecting rod 2 near the balance regulating valve 1 is provided with a first limiting groove 21 that cooperates with the first connecting part 13. The first limiting groove 21 is used to limit the position of the first connecting part 13, thereby preventing the first connecting part 13 from separating from the connecting rod 2. The first connecting part 13 and the first limiting groove 21 rotate to cooperate, thereby converting the axial displacement of the balance regulating valve 1 when it rotates into the displacement that pushes the connecting rod 2 to slide in the fixed mold plate 7, thereby adjusting the position of the sealing valve needle 5.
[0036] refer to Figures 2-4The sliding rod 3 has a second connecting portion 32 extending from one end near the connecting rod 2. A second limiting groove 22 is provided at the end of the connecting rod 2 near the sliding rod 3. The second limiting groove 22 restricts the position of the second connecting portion 32, preventing it from disengaging from the connecting rod 2. The second connecting portion 32 and the second limiting groove 22 are rotatably engaged, so that when the sliding rod 3 moves axially, it is simultaneously pushed to move axially, thereby adjusting the position of the adjusting rod 4 and thus the position of the sealing valve needle 5. The rotatable engagement of the second connecting portion 32 and the second limiting groove 22 reduces the impact of circumferential rotation of the connecting rod 2 on the position of the sliding rod 3, and thus reduces the impact on the adjusting rod 4 and the sealing valve needle 5. To further prevent circumferential rotation of the sliding rod 3, an edge can be formed on the outer edge of the sliding rod 3.
[0037] refer to Figure 5 To further ensure the stability of the position between the sliding rod 3 and the adjusting rod 4 when they are engaged, the sliding rod 3 is provided with an inclined guide groove 33 on the side near the first push-pull inclined surface 31, and the adjusting rod 4 is provided with an inclined guide block 42 on the side near the second push-pull inclined surface 41. The inclined guide block 42 and the inclined guide groove 33 slide together and also serve as a limit, thus ensuring that the sliding rod 3 and the adjusting rod 4 are not easily separated and that their relative positions are stable without affecting the sliding engagement between them.
[0038] refer to Figure 2 To further ensure the stability of the position of the adjusting rod 4 and its stability during displacement, a protective guide sleeve 6 is fitted on the adjusting rod 4. The protective guide sleeve 6 is installed in the fixed mold plate 7. One end of the sliding rod 3 passes through the protective guide sleeve 6 and is connected to the adjusting rod 4, thereby further stabilizing the position of the sliding rod 3 and making its displacement smoother.
[0039] Operating process: When it is necessary to regulate the flow rate of silicone entering the cavity, the balance regulating valve 1 is rotated to retract or advance to move it left and right, which in turn pushes the connecting rod 2 to move left and right. The left and right movement of the connecting rod 2 pushes the sliding rod 3 to move left and right. During the left and right movement of the sliding rod 3, the longitudinal position of the adjusting rod 4 and the sealing valve needle 5 remains unchanged. The sliding rod 3 uses the sliding cooperation of the first push-pull inclined surface 31 and the second push-pull inclined surface 41 of the adjusting rod 4 to push the adjusting rod 4 and the sealing valve needle 5 to move up and down, thereby adjusting the gap between the sealing valve needle 5 and the cold runner nozzle, thus realizing the flow rate of silicone entering the cavity, thereby avoiding or reducing the problems of overflow, flash and insufficient glue.
[0040] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A cold runner regulating valve for silicone molds, characterized in that, include: The components include a balance regulating valve (1), a connecting rod (2), a sliding rod (3), an adjusting rod (4), and a sealing valve needle (5). The balance regulating valve (1), connecting rod (2), sliding rod (3), and adjusting rod (4) are mounted on a fixed mold plate (7). The balance regulating valve (1) is threadedly fitted to the fixed mold plate (7) to adjust its position on the fixed mold plate (7). One end of the connecting rod (2) is connected to the balance regulating valve (1), and the other end is connected to the sliding rod (3). The sliding rod (3) is connected to the adjusting rod (4) and slides. The sealing valve needle (5) is mounted on the adjusting rod (4). The adjusting rod (4) and the sliding rod (3) are arranged perpendicular to each other. The balance adjusting valve (1) is used to rotate forward or backward and slide in cooperation with the connecting rod (2) of the fixed mold plate (7). The connecting rod (2) synchronously drives the sliding rod (3) to move. The sliding rod (3) has a first push-pull inclined surface (31) at one end near the adjusting rod (4). The adjusting rod (4) has a second push-pull inclined surface (41) at one end near the sliding rod (3). The second push-pull inclined surface (41) slides in cooperation with the first push-pull inclined surface (31) to adjust the position of the sealing valve needle (5) relative to the cold runner nozzle.
2. The cold runner regulating valve for silicone molds according to claim 1, characterized in that: The balance regulating valve (1) includes an operating part (11), an intermediate column (12) and a first connecting part (13) connected in sequence. The external thread that is threaded to the fixed mold plate (7) is opened on the intermediate column (12). The first connecting part (13) is rotatably engaged with the connecting rod (2). The operating part (11) is located outside the fixed mold plate (7) to facilitate manual rotation and adjustment of the balance regulating valve (1) and its relative position on the fixed mold plate (7).
3. A cold runner regulating valve for silicone molds according to claim 2, characterized in that: The connecting rod (2) is set inside the fixed mold fixing plate (7) and slides with the fixed mold fixing plate (7). The end of the connecting rod (2) near the balance regulating valve (1) is provided with a first limiting groove (21) that cooperates with the first connecting part (13). The first limiting groove (21) is used to limit the position of the first connecting part (13) and prevent the first connecting part (13) from separating from the connecting rod (2). The first connecting part (13) and the first limiting groove (21) are rotated together.
4. A cold runner regulating valve for silicone molds according to claim 3, characterized in that: The sliding rod (3) is provided with a second connecting part (32) at one end near the connecting rod (2), and the connecting rod (2) is provided with a second limiting groove (22) at one end near the sliding rod (3). The second limiting groove (22) is used to limit the position of the second connecting part (32) and prevent the second connecting part (32) from separating from the connecting rod (2). The second connecting part (32) and the second limiting groove (22) are rotatably engaged.
5. A cold runner regulating valve for silicone molds according to claim 1, characterized in that: The sliding rod (3) has an inclined guide groove (33) on the side near the first push-pull inclined surface (31), and the adjusting rod (4) has an inclined guide block (42) on the side near the second push-pull inclined surface (41). The inclined guide block (42) slides in conjunction with the inclined guide groove (33).
6. A cold runner regulating valve for silicone molds according to claim 1, characterized in that: The adjusting rod (4) is fitted with a protective guide sleeve (6), which is located in the fixed mold plate (7). One end of the sliding rod (3) passes through the protective guide sleeve (6) and is connected to the adjusting rod (4).