Resin handicraft pouring auxiliary demolding device

Abstract

The present application relates to resin handicraft forming technical field, specifically to a resin handicraft pouring auxiliary demolding device, solve the demolding difficulty problem that multilevel template appears easily at present, it includes frame and be located in the silica gel mold in frame, the silica gel mold includes upper die plate, lower die plate and several middle die plate, the frame on at least one side end of the silica gel mold is provided with auxiliary demolding assembly, the auxiliary demolding assembly includes straight line drive part fixed on the frame, the support of the output end of straight line drive part, install several pressing plate on the support, the upper die plate, middle die plate and lower die plate of silica gel mold are all extruded and embedded with pry plate, each pry plate is rotatably installed on the corresponding pressing plate;The surface of each pressing plate is provided with the flange of upper convex, each the pressing plate rotates and makes each flange extrude the silica gel mold, and drive each pry plate separates the silica gel mold.The present application is applied to resin handicraft pouring demolding process.

Description

Technical Field

[0001] This invention relates to the field of resin craft molding technology, and specifically to a resin craft casting auxiliary demolding device. Background Technology

[0002] In the production of resin crafts, a silicone mold is first made according to the desired shape. Then, resin and fillers are added and stirred evenly before being molded through the mold. After the resin cures, it is demolded to obtain the raw material of the craft. Subsequent processes include repair and coloring. Injection molding, on the other hand, involves heating and melting thermoplastic or thermosetting plastic raw materials, injecting them into a closed mold cavity under high pressure, and then cooling and solidifying to obtain the desired shape. Currently, in the field of resin craft manufacturing, silicone mold technology has become a core process. Its special properties are highly compatible with the characteristics of resin materials, providing a unique solution for artistic creation and industrial production.

[0003] In current injection molding structures, as shown in the technical solution with application publication number CN 105172005 A, a three-layer high-precision irregular-shaped silicone tube bending mold is proposed. This three-layer high-precision irregular-shaped silicone tube bending mold includes an upper template, a middle template, a lower template, and a mold core. The mold core includes a vertical end, a straight arc end, and a tail end. The tail end includes a positioning block and a circular shank. The middle template and the upper template are provided with mold core grooves corresponding to the mold core. This technical solution demonstrates a three-layer silicone mold structure, which can form multiple individual cavities through multiple templates, allowing multiple products to be molded in a single injection molding process.

[0004] This application is for products with relatively simple structures. For resin crafts, some products have more complex shapes, which usually require a multi-layered mold structure to separate individual crafts into layers, and to make full use of the elasticity of silicone molds to facilitate subsequent demolding.

[0005] Currently, silicone molds need to be closed and locked while maintaining pressure during the injection molding process before the raw material is injected. After that, they need to be cooled and solidified before demolding. In the subsequent mold opening and demolding processes, due to the material characteristics of the silicone mold itself and the shape design of the craft product, it is difficult to separate the multi-layer templates, resulting in demolding difficulties. Summary of the Invention

[0006] Therefore, the present invention provides a resin craft casting auxiliary demolding device, which solves the problem of demolding difficulties that often occur with multi-level templates.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solution:

[0008] A resin craft casting auxiliary demolding device includes a frame and a silicone mold disposed in the frame. The silicone mold includes an upper template, a lower template, and a plurality of middle templates sandwiched between the two. An auxiliary demolding assembly is disposed on the frame at at least one end of the silicone mold. The auxiliary demolding assembly includes a linear drive fixed to the frame, a support member disposed at the output end of the linear drive member to realize up-and-down reciprocating motion, and a plurality of pressure plates rotatably mounted on the support member. A pry bar is pressed and embedded between the upper template, middle template, and lower template of the silicone mold, and each pry bar is rotatably mounted on a corresponding pressure plate.

[0009] Each of the pressure plates has an upwardly protruding flange on its surface. When the support moves upward, each of the pressure plates rotates and the flanges squeeze the silicone mold, and the pry plates separate the silicone mold.

[0010] Preferably, the support member is provided with a plurality of limiting blocks, and a sliding sleeve is provided between two adjacent limiting blocks, and each pressure plate is hinged to the corresponding sliding sleeve.

[0011] Preferably, the lower end of each of the sliding sleeves is provided with a buffer elastic element.

[0012] Preferably, the auxiliary demolding components are disposed on the end faces of adjacent two sides of the silicone mold.

[0013] Preferably, the auxiliary demolding components are arranged on the end faces of the two symmetrical ends of the silicone mold.

[0014] Preferably, the auxiliary demolding component is located at one corner of the silicone mold.

[0015] Preferably, the width of each of the skids is 1 / 4 to 1 / 2 of the width of the edge where the silicone mold is laid.

[0016] By adopting the aforementioned technical solution, the beneficial effects of the present invention are:

[0017] This technical solution achieves precise mold opening and demolding through the combined action of the pry plate opening and the pressure plate turning flange extrusion. When the linear drive is started, the support drives one side of the pressure plate upward. At this time, the flange on the surface of the pressure plate extrudes the side wall of the silicone mold, causing deformation between the layers of the silicone mold. This not only promotes the separation of the molded templates, but also applies subtle pressure to the side of the molded object before demolding, which conforms to the "prestressed demolding principle" and effectively avoids defects such as tearing and deformation that are common on the edges of resin crafts.

[0018] In the production of single-cavity multi-part products, the skid plate embedded at the joint of the mold template is pulled along with the rotation of the pressure plate, forming an initial gap at the joint of the mold template, breaking the vacuum adsorption state, and providing a breakthrough for subsequent mechanical mold opening; in the production of multi-cavity products, the skid plate can directly apply force to each layer of mold template to achieve synchronous separation. When the support moves upward, the flange on the surface of the pressure plate first squeezes the side of the silicone mold, causing the mold template to undergo slight deformation and pressurizing the side of the molded object. This not only enhances the initial separation tendency between the molded object and the mold, but also avoids tearing or deformation of the side of the finished product caused by direct violent demolding, realizing a flexible demolding logic of "pre-pressing first, then skidding". Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the device according to Embodiment 1 of the present invention.

[0020] Figure 2 This is a schematic diagram of the modified structure of the auxiliary demolding component in Embodiment 1 of the present invention. Figure 1 (Point A in the middle).

[0021] Figure 3 This is one arrangement method (top view) of Embodiment 1 of the present invention.

[0022] Figure 4 This is another layout method (top view) of Embodiment 1 of the present invention.

[0023] Figure 5 This is another arrangement method (top view) of Embodiment 1 of the present invention.

[0024] Reference numerals: 100, frame; 200, silicone mold; 201, upper template; 202, lower template; 203, middle template; 1, auxiliary demolding component; 11, linear drive component; 12, support component; 121, limit block; 122, sliding sleeve; 123, buffer elastic component; 13, pressure plate; 131, flange; 14, pry plate. Detailed Implementation

[0025] The following will describe in detail the implementation of the present invention with reference to specific embodiments, so that the process of how the present invention uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly. Example

[0026] refer to Figure 1 and Figure 2A resin craft casting auxiliary demolding device includes a frame 100 and a silicone mold 200 disposed in the frame 100. The silicone mold 200 includes an upper template 201, a lower template 202, and two middle templates 203 sandwiched between them. An auxiliary demolding assembly 1 is disposed on the frame 100 at one end of the silicone mold 200. The auxiliary demolding assembly 1 includes a linear drive 11 fixed to the frame 100, a support 12 disposed at the output end of the linear drive 11 to realize up-and-down reciprocating motion, and a rotatable mounting bracket. Three pressure plates 13 are mounted on the support member 12, and the linear drive member 11 is an electric push rod; a pry bar 14 is pressed and embedded between the upper template 201, middle template 203 and lower template 202 of the silicone mold 200, and each pry bar 14 is rotatably mounted on the corresponding pressure plate 13; each pressure plate 13 has an upwardly protruding flange 131 on its surface. When the support member 12 moves upward, each pressure plate 13 rotates and causes each flange 131 to press the silicone mold 200, and drives each pry bar 14 to separate the silicone mold 200. In this embodiment, the pry bar 14 is pre-embedded in the edge of the silicone mold 200 and is used to assist in demolding after pouring and cooling. The removal of the pry bar 14 will form gaps between the layers of the silicone mold 200. The width of each pry bar 14 is 1 / 4 to 1 / 2 of the width of the edge of the silicone mold 200 where it is placed. Setting it to 1 / 4 to 1 / 2 of the width of the mold edge ensures sufficient lever effect while avoiding excessive intrusion into the mold interior and affecting the molding space, thus achieving a balance between "effective prying" and "structural adaptation".

[0027] In this embodiment, flanges 131 are arranged on the pressure plate 13. After the pressure plate 13 rotates, the flanges 131 can press the edges of each template. As shown in the technical solution CN 109514776 A, the action of "pressing the side of the molded object in the fixed mold with a pressure device" can help demolding, reduce the amount of mold release agent, and have a high demolding rate (the demolding rate of the molded object refers to the percentage of times that the molded object or the mold does not break during multiple demolding processes to separate the molded object from the mold, relative to all repeated times).

[0028] Technically, precise mold opening and demolding are achieved through the combined action of the slit opening of the pry plate 14 and the extrusion of the turning flange 131 of the pressure plate 13. When the linear drive component 11 is started, the support component 12 drives one side of the pressure plate 13 to move upward. At this time, the flange 131 on the surface of the pressure plate 13 extrudes the side wall of the silicone mold 200, causing deformation between the templates of each layer of the silicone mold 200. This not only promotes template separation, but also applies subtle pressure to the side of the molded object before demolding, which conforms to the "prestressed demolding principle" and effectively avoids defects such as tearing and deformation that are common on the edges of resin crafts.

[0029] In this embodiment, the support member 12 is provided with multiple limiting blocks 121, and a sliding sleeve 122 is provided between two adjacent limiting blocks 121. Each pressure plate 13 is hinged to the corresponding sliding sleeve 122. The limiting blocks 121 are fixed by detachable screws and can be disassembled and adjusted as needed to adjust the stroke of the sliding sleeve 122. The limiting blocks 121 are set to six according to the number of pressure plates 13 to limit the upward and downward movement of the three pressure plates 13. The sliding sleeves 122 between adjacent limiting blocks 121 are used to hinge the pressure plates 13, which not only ensures the rotational stability of the pressure plates 13, but also shortens the moving distance of the support member 12 by limiting the sliding stroke of the sleeves, thereby improving the mold opening efficiency.

[0030] Meanwhile, based on the above structure, each of the sliding sleeves 122 is provided with a buffer elastic element 123 at its lower end, and the buffer elastic element 123 is sleeved on the support member 12; the upward buffer elastic element 123 is added to the support member 12 to absorb the impact of the linear drive member 11 movement and avoid rigid extrusion that causes excessive deformation of the silicone mold 200 or local indentation of the finished product.

[0031] This structure can be configured differently depending on the products being manufactured.

[0032] Firstly, such as Figure 3 As shown, the auxiliary demolding component 1 is arranged on the end faces of adjacent two sides of the silicone mold 200. Adaptive curved products are arranged on the adjacent two sides. Because the curved surface of the product is regular, the adjacent two sides work together to squeeze the curved surface structure distributed at the corners of the silicone mold 200, taking into account both the separation rate and the shape protection. While ensuring demolding efficiency, it avoids stress concentration from damaging the fine contours to the greatest extent.

[0033] Secondly, such as Figure 4 As shown, the auxiliary demolding components 1 are arranged on the end faces of the symmetrical two sides of the silicone mold 200. The symmetrical two-side arrangement is suitable for symmetrical multi-cavity molds, realizing synchronous and uniform force demolding. When the auxiliary demolding components 1 on both sides work synchronously, it ensures that the force on both sides of the product is uniform, and eliminates the torsion and deformation caused by force on one side. It is especially suitable for the production of mirror effect or strictly symmetrical artworks.

[0034] Thirdly, such as Figure 5 As shown, the auxiliary demolding component 1 is positioned at one corner of the silicone mold 200. This single-corner placement simplifies the structure, reduces equipment costs, and is suitable for products with simple structures. By setting a simplified auxiliary demolding component 1 at one corner of the mold, the core demolding function is maintained while significantly reducing equipment complexity and manufacturing costs, providing a cost-effective solution for small and medium-sized craft manufacturers. It should be noted that structurally, the shape of the pry plate 14 can be altered according to the corner's shape to increase the insertion depth.

[0035] The structure shown in this technical solution can greatly simplify the mold opening and demolding process of the silicone mold 200, improve efficiency, and avoid damage to the silicone mold 200 caused by traditional mold opening, thus protecting the silicone mold 200 and significantly reducing material waste and rework costs. Through the whole-process demolding control of "pre-pressing-prying-buffering-self-locking", it not only solves the problem of difficult demolding of the silicone mold 200 caused by vacuum adsorption or the adhesion of the molded product, but also adapts to the structural needs of different products through multi-position layout and size optimization, making it particularly suitable for precision molding scenarios such as resin crafts.

[0036] Although the invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the invention without departing from the spirit and scope of the invention as defined in the appended claims, all of which shall be within the scope of protection of the invention.

Claims

1. A resin craft casting auxiliary demolding device, comprising a frame (100) and a silicone mold (200) disposed in the frame (100), wherein the silicone mold (200) comprises an upper template (201), a lower template (202), and a plurality of middle templates (203) sandwiched between the two, characterized in that: An auxiliary demolding assembly (1) is provided on a frame (100) located at at least one side of the silicone mold (200). The auxiliary demolding assembly (1) includes a linear drive (11) fixed to the frame (100), a support (12) provided at the output end of the linear drive (11) to realize up-and-down reciprocating motion, and a plurality of pressure plates (13) rotatably mounted on the support (12). A pry bar (14) is pressed and embedded between the upper template (201), the middle template (203) and the lower template (202) of the silicone mold (200). Each pry bar (14) is rotatably mounted on the corresponding pressure plate (13). Each of the pressure plates (13) has an upwardly protruding flange (131) on its surface. When the support member (12) moves upward, each of the pressure plates (13) rotates and causes each flange (131) to squeeze the silicone mold (200), and drives each of the pry plates (14) to separate the silicone mold (200).

2. The resin craft casting auxiliary demolding device according to claim 1, characterized in that: The support member (12) is provided with a number of limiting blocks (121), and a sliding sleeve (122) is provided between two adjacent limiting blocks (121). Each pressure plate (13) is hinged to the corresponding sliding sleeve (122).

3. The resin craft casting auxiliary demolding device according to claim 2, characterized in that: Each of the sliding sleeves (122) is provided with a buffer elastic element (123) at its lower end.

4. A resin craft casting auxiliary demolding device according to any one of claims 1-3, characterized in that: The auxiliary demolding component (1) is disposed on the end faces of adjacent two sides of the silicone mold (200).

5. A resin craft casting auxiliary demolding device according to any one of claims 1-3, characterized in that: The auxiliary demolding component (1) is arranged on the end faces of the two symmetrical ends of the silicone mold (200).

6. A resin craft casting auxiliary demolding device according to any one of claims 1-3, characterized in that: The auxiliary demolding component (1) is located at one corner of the silicone mold (200).

7. A resin craft casting auxiliary demolding device according to any one of claims 1-3, characterized in that: The width of each of the aforementioned pry bars (14) is 1 / 4 to 1 / 2 of the edge width of the silicone mold (200) where it is laid.

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