Molding mold
By setting partitions in the molding die to prevent different colored silicone raw materials from coming into contact, the problem of overflow and color mixing in multi-color silicone hot pressing is solved, and high-precision molding of multi-color silicone products is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUIZHOU TONLY ELECTRONICS LTD
- Filing Date
- 2025-05-20
- Publication Date
- 2026-05-26
AI Technical Summary
In existing technologies, when hot-pressing silicone, multi-color molding is prone to problems such as excess glue and color mixing.
Design a molding die, including a first mold and a second mold. The first mold has first and second molding areas for placing raw materials of different colors, and a partition is set in the connecting area to prevent the raw materials of different colors from contacting each other. Together, they form a molding cavity that is adapted to the product, and are formed by hot pressing.
This technology enables color separation in multi-color silicone molding products, avoiding excess glue and color mixing, and improving molding accuracy and efficiency.
Smart Images
Figure CN224275887U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of molding technology, and in particular to a molding die. Background Technology
[0002] Buttons are used in electronic calculators, remote control systems, and digital products. Current button structures often include silicone components, which are typically colored differently depending on function or identification requirements. However, silicone is now usually molded in a single color using thermoforming. If multiple colors are used, the problem of excess adhesive and color mixing can easily occur. Utility Model Content
[0003] The main purpose of this utility model is to provide a molding die that solves the technical problem of color mixing that easily occurs in the current hot pressing molding of multi-color silicone.
[0004] To achieve the above objectives, the molding die proposed in this utility model includes:
[0005] The first mold has a first forming groove, and the first forming groove has at least a first forming area and a second forming area, which are used to place raw materials of different colors.
[0006] A partition member, protruding from the first molding groove and located in the connection area between the first molding area and the second molding area; and
[0007] In the second mold, when the first mold and the second mold are in the closed state, the first molding groove and the second mold cooperate to form a molding cavity that is adapted to the product. Attached Figure Description
[0008] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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 the structures shown in these drawings without creative effort.
[0009] Figure 1 An exploded structural diagram of the molding die provided by this utility model from one angle;
[0010] Figure 2 An exploded structural diagram of another angle of the molding die embodiment provided by this utility model;
[0011] Figure 3 A schematic diagram of the structure of the first mold in the embodiment of the molding die provided by this utility model;
[0012] Figure 4A cross-sectional view of an embodiment of the molding die provided by this utility model;
[0013] Figure 5 for Figure 4 A magnified view of a portion of point A in the middle;
[0014] Figure 6 for Figure 4 A magnified view of a portion of point B in the middle;
[0015] Figure 7 An exploded structural diagram of the molded product provided in this utility model.
[0016] Explanation of icon numbers:
[0017] 100. First mold; 110. First molding groove; 111. First molding area; 112. Second molding area; 120. Molding part; 130. Material release mark; 140. Glue overflow groove; 150. Pre-cut protrusion; 151. Pre-cut surface; 160. Parting surface;
[0018] 200. Second mold; 210. Second forming groove;
[0019] 300. Partition components;
[0020] 10. Product; 20. Raw material.
[0021] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.
[0023] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.
[0024] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.
[0025] In existing technologies, buttons are used in electronic calculators, remote control systems, digital products, etc. Current button structures often incorporate silicone components, which are typically colored differently depending on function or identification requirements. However, silicone is now generally single-color when thermoformed. If multiple colors are used, issues such as excess adhesive and color mixing can easily occur.
[0026] This utility model proposes a molding die.
[0027] Please see Figures 1 to 6 In one embodiment of the present invention, the molding die includes a first mold 100, a partition frame, and a second mold 200. The first mold 100 is provided with a first molding groove 110, and the first molding groove 110 is provided with at least a first molding area 111 and a second molding area 112. The first molding area 111 and the second molding area 112 are used to place raw materials 20 of different colors. The partition 300 protrudes from the first molding groove 110 and is located in the connection area of the first molding area 111 and the second molding area 112. In the closed state of the first mold 100 and the second mold 200, the first molding groove 110 and the second mold 200 cooperate to form a molding cavity adapted to the product 10.
[0028] In this embodiment, after the first mold 100 and the second mold 200 are closed, the product 10 is formed using a hot pressing process. It is understood that the raw materials 20 are placed in the first forming area 111 and the second forming area 112 respectively, and the raw materials 20 placed in the first forming area 111 and the second forming area 112 are of different colors. It should be noted that the number of the first forming area 111 and the second forming area 112 of the first mold 100 can be one or more, depending on the product 10, and is not limited here. Furthermore, the order and position of the first forming area 111 and the second forming area 112 are also set according to the actual needs of the product 10. The raw materials 20 can be silicone of different colors or other materials that can be used for hot pressing, and raw materials 20 of different colors use the same type to avoid incompatibility problems after molding.
[0029] Within the first molding groove 110, a connecting area exists between the first molding zone 111 and the second molding zone 112. A partition 300 protrudes from the connecting area. In specific implementation, to ensure that the raw material 20 within the first molding zone 111 and the second molding zone 112 does not come into contact within the connecting area, the partition 300 contacts the second mold 200 in the mold-closed state to block the flow of the raw material 20. (Refer to...) Figure 6 As shown. Furthermore, in order to further improve the strength of the partition 300, in this embodiment, the partition 300 is integrally formed with the first mold 100. The shape and size of the partition 300 are set according to the shape of the product 10 and the location area where the flow of the raw material 20 needs to be blocked, and are not limited here.
[0030] This utility model's technical solution employs a first molding groove 110 in a first mold 100, with a second mold 200 cooperating with the first molding groove 110 to form a molding cavity adapted to the product 10. Different colored first molding areas 111 and second molding areas 112 are placed within the first molding groove 110 to achieve one-time molding of a product 10 with multiple colors. Furthermore, a partition 300 is provided in the connecting area between the first molding area 111 and the second molding area 112, protruding from the first molding groove 110 to prevent different colored raw materials 20 from contacting in the connecting area, thus avoiding the problem of glue overflow and color mixing.
[0031] In one embodiment, a molded part 120 is provided in both the first molding area 111 and the second molding area 112. The molded part 120 corresponds to the light shielding area of the molded product 10, and the center of the partition 300 is close to the line connecting the two molded parts 120.
[0032] It should be noted that, based on mold flow analysis prior to hot pressing, it was confirmed that in other areas of the partition 300, the contact points of the two colored materials 20 would not extend beyond the light-shielding area. In this embodiment, the product 10 formed by the first mold 100 and the second mold 200 is used for buttons, specifically for covering light-emitting lamps, so that the buttons display different colors of light to serve as identifiers. Specifically, the molds 120 in the first molding area 111 and the second molding area 112 shape the product 10 into the required shape and correspond to the light-shielding area of the product 10. The light-shielding area is the area covering the light-emitting lamp. To avoid color mixing and ensure the color display effect, the centerline of the partition 300 is close to the line connecting the two molds 120 to ensure that the different colored materials 20 near the two light-shielding areas do not meet and mix.
[0033] In one embodiment, the second mold 200 is provided with a second molding groove 210, which corresponds to the mold part 120. The second molding grooves 210 are spaced apart. In the mold-closed state, the partition 300 is in close contact with the area between the two second molding grooves 210.
[0034] In this embodiment, the second molding groove 210 and the mold 120 cooperate to form the shape of the product 10. There is a contact area between two adjacent second molding grooves 210. In the mold-closed state, the contact area is in close contact with the first mold 100, and the partition 300 is in close contact with the contact area to prevent the raw material 20 inside the two adjacent second molding grooves 210 from flowing and meeting in the contact area, thereby avoiding the occurrence of color mixing.
[0035] In one embodiment, the first mold 100 is provided with a material placement mark 130, which is used to indicate the placement position of the raw material 20.
[0036] This embodiment uses a thermoforming process to form product 10. One color of raw material 20 is placed in the first forming area 111, and another color of raw material 20 is placed in the second forming area 112. The placement position of the raw material 20 has a certain impact on its flow area. In the specific implementation process, based on mold flow analysis, marking lines indicating the placement position of the raw material 20 are set, and the raw material 20 is weighed to ensure the forming effect. Furthermore, confirming the placement position of the raw material 20 according to the feeding mark 130 can also improve efficiency. In the specific implementation process, the feeding mark 130 can be a groove or laser marking line set on the first mold, serving an identification function without affecting the mold closing and sealing. The groove can be of any shape, as long as it fits within the reference range indicating the placement position of the raw material 20.
[0037] Furthermore, in order to further improve the accuracy of the placement position of the raw material 20, in one embodiment, the material release mark 130 includes two sets, and the two sets of material release marks 130 are respectively disposed on opposite sides of the first forming groove 110. Both sets of material release marks 130 limit the placement position of the raw material 20 to improve the positioning accuracy of the product 10.
[0038] In one embodiment, the first mold 100 is further provided with an overflow groove 140, which surrounds the outer periphery of the first molding groove 110. In the mold-closed state, the overflow groove 140 is connected to the first molding groove 110.
[0039] To ensure that the product 10 in the molding cavity is saturated after molding, in practice, the amount of raw material 20 placed needs to exceed the amount required for molding the product 10. Therefore, the molding die needs to be equipped with a structure to accommodate the excess raw material. Specifically, in this embodiment, the overflow groove 140 is connected to the first molding groove 110. The excess raw material flows from the first molding groove 110 into the overflow groove 140. To facilitate the timely flow of the raw material 20 into the overflow groove 140, in this embodiment, the overflow groove 140 surrounds the outer periphery of the first molding groove 110, ensuring that the excess raw material can flow into the overflow groove 140 at any position and that the product 10 is saturated at any position.
[0040] In a specific embodiment, the weight of the raw material 20 is determined based on the molding effect of the product 10, and the depth of the overflow groove 140 is at least 0.5 mm so as to fully accommodate the excess raw material 20.
[0041] In one embodiment, the first mold 100 is further provided with a pre-broken protrusion 150, which surrounds the first molding groove 110 and is used to separate the first molding groove 110 from the overflow groove 140.
[0042] It should be noted that during the molding process of product 10, excess raw material 20 flows into the overflow tank 140, for reference. Figure 1 and Figure 7 As shown, it is understandable that after product 10 is formed, product 10 is connected to the raw material 20 in the overflow tank 140, and it is necessary to separate the raw material 20 in the overflow tank 140 from product 10. It is also understandable that the pre-cutting protrusion 150 is arranged around the first forming groove 110. In this embodiment, to facilitate the separation of product 10 from the overflow raw material 20, a pre-cutting protrusion 150 is provided between the overflow tank 140 and the first forming groove 110. The pre-cutting protrusion 150 protrudes from the bottom surfaces of both the first forming groove 110 and the overflow tank 140, making the thickness of the formed portion of the raw material 20 corresponding to the pre-cutting protrusion 150 relatively thin, facilitating separation.
[0043] refer to Figure 5As shown, in the specific implementation process, the pre-cut protrusion 150 also has a pre-cut surface 151, which is set towards the second mold 200. The first mold 100 is provided with a parting surface 160 for contacting and fitting with the second mold 200. In the mold-closed state, the distance between the pre-cut surface 151 and the second mold 200 is greater than the distance between the parting surface 160 and the second mold 200.
[0044] It should be noted that the parting surface 160 is the surface where the first mold 100 and the second mold 200 meet in the mold-closed state. In the mold-closed state, there is a certain space between the pre-cut surface 151 and the second mold 200 to allow excess material 20 to flow into the overflow groove 140. In specific implementation, the pre-cut surface 151 is the top surface of the pre-cut protrusion 150. The pre-cut surface 151 can be a plane or an inclined plane. In one embodiment, the width L of the pre-cut surface 151 is 0.05mm-0.1mm, and the distance between the pre-cut surface 151 and the parting surface 160 is 0.08mm-0.1mm. This ensures that the excess material 20 in the first molding groove 110 flows smoothly into the overflow groove, and that the material 20 in the overflow groove is easily separated from the product 10 after molding.
[0045] The above description is merely an exemplary embodiment of the present utility model and does not limit the scope of protection of the present utility model. Any equivalent structural transformations made based on the inventive concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present utility model.
Claims
1. A molding die, characterized in that, include: The first mold has a first forming groove, and the first forming groove has at least a first forming area and a second forming area, which are used to place raw materials of different colors. A partition member protrudes from the first molding groove and is located in the connection area between the first molding area and the second molding area; as well as In the second mold, when the first mold and the second mold are in the closed state, the first molding groove and the second mold cooperate to form a molding cavity that is adapted to the product.
2. The molding die as described in claim 1, characterized in that, Both the first molding area and the second molding area are provided with molded parts, the molded parts correspond to the light shielding area of the product being molded, and the center of the partition is close to the line connecting the two molded parts.
3. The molding die as described in claim 2, characterized in that, The second mold is provided with a second forming groove, which corresponds to the molded part. The second forming grooves are spaced apart. In the mold-closed state, the partition is in close contact with the area between the two second forming grooves.
4. The molding die as described in claim 1, characterized in that, The first mold is provided with a material placement mark, which is used to indicate the placement position of the raw material.
5. The molding die as described in claim 4, characterized in that, The material discharge markings include two sets, which are respectively located on opposite sides of the first forming groove.
6. The molding die as described in claim 1, characterized in that, The first mold is also provided with an overflow groove, which surrounds the outer periphery of the first molding groove. In the mold-closed state, the overflow groove is connected to the first molding groove.
7. The molding die as described in claim 6, characterized in that, The depth of the overflow groove is at least 0.5 mm.
8. The molding die as described in claim 6, characterized in that, The first mold is also provided with a pre-broken protrusion, which is arranged around the first molding groove and is used to separate the first molding groove from the overflow groove.
9. The molding die as described in claim 8, characterized in that, The pre-broken protrusion also has a pre-broken surface, which is set towards the second mold. The first mold has a parting surface for contacting and fitting with the second mold. In the mold-closed state, the distance between the pre-broken surface and the second mold is greater than the distance between the parting surface and the second mold.
10. The molding die as described in claim 9, characterized in that, The width L of the pre-section is 0.05mm-0.1mm; and / or, The distance between the pre-section and the parting surface is 0.08mm-0.1mm.