Silicone bowl molding mold

Abstract

This utility model relates to the field of compression molding, and more particularly to a silicone bowl molding mold. The utility model provides a silicone bowl molding mold, including a first mold and a second mold that can be moved relative to each other to open and close. The first mold is used to place the bowl body before mold closing, and the second mold, together with the outer side wall and outer bottom wall of the bowl body, forms a mold cavity after mold closing. The second mold has a material retention groove on the end wall of the mold cavity. This silicone bowl molding mold reduces the likelihood of the bowl body being crushed during the compression molding process. Using the molding mold provided by this utility model, if there is excess solid silicone material actually used in the mold cavity, the excess material flowing to the end of the mold cavity can be filled into the material retention groove, preventing it from remaining in the mold cavity under pressure and thus reducing the likelihood of the bowl body being crushed.

Description

Technical Field

[0001] This utility model relates to the field of compression molding, and in particular to a silicone bowl molding mold. Background Technology

[0002] A silicone bowl is available, comprising a metal bowl body with sidewalls forming from the bottom edge upwards. A non-slip, impact-resistant silicone layer is applied to the bottom and outer walls of the bowl using a molding process. During molding, a bowl body is placed upside down (bottom wall facing upwards) into a mold. A pre-calculated amount of solid silicone material is placed on the bottom wall of the bowl body. After the mold closes, the solid silicone material is located in the mold cavity. Upon heating, it melts and becomes a viscous flow, gradually flowing from the bottom wall to the outermost edge of the bowl body. After curing and shrinking, it coats the bowl body, forming the aforementioned silicone layer. The actual amount of solid silicone material placed in the mold cavity is often left as a margin to ensure the viscous flow fills the entire cavity. However, due to the high-pressure environment within the mold cavity during molding, the excess silicone material (i.e., excess material) continues to be under pressure after filling the cavity, potentially causing the metal bowl body to crack. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a silicone bowl molding mold that prevents the bowl body placed in the mold from easily cracking during the molding process of silicone bowls.

[0004] To solve the above problems, this utility model provides a silicone bowl molding mold, including a first mold and a second mold that can be moved relative to each other to achieve opening and closing. The first mold is for the bowl body to be placed in before the mold is closed. After the mold is closed, the second mold, together with the outer wall and the outer bottom wall of the bowl body, forms a mold cavity. The second mold has a material receiving groove on the cavity wall at the end of the mold cavity.

[0005] Furthermore, the first mold is a fixed mold and the second mold is a moving mold.

[0006] Furthermore, there are multiple residual material receiving slots arranged around the mold cavity.

[0007] Furthermore, the end of the mold cavity is located on the outer side wall of the bowl, away from the outer bottom wall.

[0008] Furthermore, the waste material receiving groove is radially horizontal.

[0009] Furthermore, the residual material receiving groove extends radially outward beyond the end of the mold cavity.

[0010] Beneficial effects: When using the molding die provided by this utility model, if the actual amount of solid silicone raw material put into the mold cavity is reserved to allow for excess material, the excess material flowing to the end of the mold cavity can be filled into the excess material receiving groove and will not remain in the mold cavity to continue to be compressed, thus making it less likely to crack the bowl body put into the mold. Attached Figure Description

[0011] Figure 1 This is a simplified structural diagram of the bowl.

[0012] Figure 2 This is a simplified half-section diagram of the bowl.

[0013] Figure 3 This is a simplified structural diagram of the molding die in the closed state.

[0014] Figure 4 This is a simplified structural diagram of the molding die in its open state.

[0015] Figure 5 This is a simplified structural diagram of the fixed mold, with the bowl body already upside down on the core.

[0016] Figure 6 This is a simplified structural diagram of the lower moving mold and the upper moving mold, viewed from below.

[0017] Figure 7 yes Figure 6 Enlarged view of section A.

[0018] Figure 8 It is a simplified half-section diagram of one of the mold cavities in the molded state when the mold is closed.

[0019] Figure 9 yes Figure 8 Enlarged view of section B.

[0020] Figure 10 yes Figure 8 Enlarged view of section C.

[0021] Figure 11 This is a simplified structural diagram of a silicone bowl.

[0022] Figure 12 This is a simplified schematic diagram of the structure of the waste material receiving tank in other embodiments.

[0023] Figure 13 This is a simplified schematic diagram of the residual adhesive structure in other embodiments.

[0024] Symbol explanation:

[0025] 1-Bowl body; 11-Bowl side wall; 111-Top of bowl side wall; 112-End of bowl side wall; 12-Outer side wall; 13-Flanged edge; 14-Rolled edge; 15-Outer bottom wall of bowl body; 2-Silicone layer; 21-Residual adhesive; 3-Molding mold; 31-Fixed mold; 32-Lower moving mold; 321-Cavity; 33-Upper moving mold; 34-Core; 35-Mold cavity; 351-End of mold cavity; 36-Excess material receiving groove. Detailed Implementation

[0026] The present invention will be further described in detail below with reference to specific embodiments.

[0027] See Figure 1 and Figure 2 The bowl body 1 forms a bowl sidewall 11 from the bottom edge upwards. The top 111 of the bowl sidewall 11 forms the bowl mouth, and is horizontally folded outwards to form a flanged edge 13. The outermost end of the flanged edge 13 is the end 112 of the bowl sidewall 11, which is rolled downwards to form a rolled edge 14. The outer bottom wall 15 and outer side wall 12 (the outer side wall 12 includes the lower side wall of the flanged edge 13 and the inner side wall of the rolled edge 14) of the bowl body 1 are also considered. Figure 2 To manufacture a silicone bowl by coating it with silicone (as shown), a molding process is required, which necessitates the use of molding die 3. The specific structure of molding die 3 is detailed below.

[0028] See Figure 3 The molding die 3 includes a lower fixed die 31, a central lower moving die 32, and an upper moving die 33. The lower moving die 32 and the upper moving die 33 can each move relative to the fixed die 31 to achieve mold opening and closing. See Figure 4 In this embodiment, the molding die 3 is a six-cavity die. Taking one cavity structure as an example, the upper surface of the fixed die 31 is provided with a core 34, the shape of which is similar to the inner sidewall of the bowl 1. Before the upper and lower moving dies 31 and 32 and the fixed die 31 are closed, the bowl 1 is placed upside down onto the core 34 with the outer bottom wall 15 facing upwards and then tightened. Figure 5 As shown, solid silicone raw material (not shown in the figure) is placed on the outer bottom wall 15 of the bowl 1. See Figure 4 and Figure 6 The lower surface of the lower moving mold 32 is recessed upward to form a cavity 321. The bottom of the cavity 321 is partially recessed upward and connects to the upper surface of the lower moving mold 32 (see...). Figure 4 After the upper and lower moving molds 31 and 32 and the fixed mold 31 are closed, the lower surface of the upper moving mold 33, the surface of the cavity 321 of the lower moving mold 32, the outer wall 12 of the bowl body 1 and the outer bottom wall 15 together form the mold cavity 35, as shown. Figure 8 , Figure 9 and Figure 10As shown, the solid silicone material placed on the outer bottom wall 15 of the bowl 1 is thus accommodated in the mold cavity 35. In this embodiment, the mold 3 includes a fixed mold 31, an upper moving mold 33, and a lower moving mold 32. After the mold is closed, the mold cavity 35 is formed by the lower surface of the upper moving mold 33, the surface of the cavity 321 of the lower moving mold 32, the outer side wall 12 of the bowl 1, and the outer bottom wall 15. In other embodiments, the mold 3 can be modified to include only a fixed mold 31 and a moving mold, for example, by eliminating the upper moving mold 33 and retaining the lower moving mold 32. In this case, the bottom of the cavity 321 formed by the upward concavity of the lower surface of the lower moving mold 32 is correspondingly changed to open to the upper surface of the lower moving mold 32. Thus, after the mold is closed, the mold cavity 35 is formed by the surface of the cavity 321 of the lower moving mold 32, the outer side wall 12 of the bowl 1, and the outer bottom wall 15.

[0029] See Figure 8 , Figure 9 and Figure 10 After the solid silicone material contained in the mold cavity 35 is heated and melts into a viscous flow state, it flows into the mold 3 (see Figure 3 Under pressure, the fluid gradually flows from the outer bottom wall 15 of the bowl 1 to the end of the outer side wall 12 of the bowl 1 (i.e., the inner side wall of the rolled edge 14), gradually filling the mold cavity 35 and heading towards the end 351 of the mold cavity 35 (the end 351 of the mold cavity 35 is located at the end of the outer side wall 12 of the bowl 1 away from the outer bottom wall 15, i.e., corresponding to...). Figure 9 The lower side wall of the flanged edge 13 and the inner side wall of the rolled edge 14 of the middle bowl body 1). The actual amount of solid silicone material put into the mold cavity 35 is often reserved with excess to ensure that the viscous silicone material can fill the entire mold cavity 35. To avoid the excess silicone material in the mold cavity 35 being squeezed and cracked by pressure, see Figure 9 The lower moving mold 32 has a material receiving groove 36 on the cavity wall at the end 351 of the mold cavity 35. The groove is radially horizontal, with one end connected to the end 351 of the mold cavity 35 and the other end extending radially outward beyond the end 351. This allows excess silicone material to flow to the end 351 of the mold cavity 35 and be filled into the material receiving groove 36, preventing it from remaining in the mold cavity 35 under pressure and thus reducing the risk of cracking the bowl 1 placed in the mold 3. This embodiment has four material receiving grooves 36 (see...). Figure 7 The remaining material receiving slots 36 are arranged around the mold cavity 35; in other embodiments, the number of remaining material receiving slots 36 can be changed to other ones, such as three or five.

[0030] While the mold is closed, the viscous silicone raw material cools, solidifies, and shrinks, coating the bowl 1 to form a silicone layer 2, thus producing the desired product. Figure 11The silicone bowl shown is manufactured as follows. After manufacturing, the upper moving mold 33 and the lower moving mold 32 open sequentially relative to the fixed mold 31, leaving the finished silicone bowl on the fixed mold 31 for removal. Because excess silicone material is filled into the material retention groove 36 during the molding process, this excess material hardens to form residual adhesive. Therefore, after the finished silicone bowl is removed, the residual adhesive must be manually removed by production personnel to avoid affecting the appearance of the silicone bowl. In other embodiments, the material retention groove 36 can be modified as follows... Figure 12 As shown in the diagram, the residual silicone material in the excess material receiving groove 36, after curing, will correspondingly fold inward and hide inside the rolled edge 14 of the bowl body 1 instead of expanding outward and being exposed. Figure 13 As shown, it does not easily affect the appearance of the silicone bowl, so there is no need for production staff to remove it manually.

[0031] The above description is merely an embodiment of the present invention and does not limit the scope of patent protection. Any non-substantial changes or substitutions made by those skilled in the art based on the present invention will still fall within the scope of patent protection.

Claims

1. A silicone bowl molding mold, comprising a first mold and a second mold that can be moved relative to each other to achieve opening and closing, wherein the first mold is for inserting the bowl body before mold closing, and the second mold, together with the outer side wall and the outer bottom wall of the bowl body, forms a mold cavity after mold closing, characterized in that, The second mold has a material accommodating groove on the cavity wall at the end of the mold cavity.

2. The silicone bowl molding mold as described in claim 1, characterized in that, The first mold is a fixed mold, while the second mold is a moving mold.

3. The silicone bowl molding mold as described in claim 1, characterized in that, There are multiple residual material receiving slots, which are arranged around the mold cavity.

4. The silicone bowl molding mold as described in claim 1, characterized in that, The end of the mold cavity is located on the outer side wall of the bowl, away from the outer bottom wall.

5. The silicone bowl molding mold as described in claim 4, characterized in that, The waste material receiving groove is placed radially horizontally.

6. The silicone bowl molding mold as described in claim 5, characterized in that, The excess material receiving groove extends radially outward beyond the end of the mold cavity.

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