Palm type silicone rubber product transfer mold pressing type mold splitting device

Abstract

The utility model relates to a palm type silicone rubber product transfer mold pressing type mold splitting device. When the existing palm type silicon rubber product mold is used, the product is difficult to split, the exhaust problem of the product is not fully considered, and meanwhile, the mold splitting surface has a plurality of acute-angle sharp edges, so that the mold is easily damaged due to collision. The injection molding die comprises an injection molding die, a material cavity, a cavity upper die, a cavity lower die and a bottom plate, a material cavity is formed in the lower end of the injection molding die, the cavity upper die is arranged below the injection molding die, and the cavity upper die is in clearance fit connection with the injection molding die through the material cavity; the lower end of the cavity lower die is arranged on the bottom plate; and an insert assembly is also arranged on the bottom plate and is positioned in the cavity lower mold. The transmission mold pressing type mold splitting structure is adopted, the parting surface is gentle, rubber discharging and air exhausting during vulcanization are facilitated, the problems that air entrapment and edge drawing are prone to occurring in a palm type product are solved, and therefore the problem that defects are prone to occurring in the palm type product is solved.

Description

Technical Field

[0001] The utility model relates to the field of mold design and manufacturing, in particular to a transfer molding type mold splitting device for a palm-shaped silicone rubber product. Background Art

[0002] Palm-shaped silicone rubber products are shaped like a palm and are extremely complex, with many undercuts and dead corners. Therefore, the design and processing of this product are difficult.

[0003] At present, the molds of palm-shaped silicone rubber products are difficult to separate when the products are used, and the existing molds of palm-shaped silicone rubber products do not fully consider the exhaust problem of the products, which leads to the phenomenon of product air curling and edge drawing during use, resulting in product defects. At the same time, the mold separation surface of the existing palm-shaped silicone rubber product mold has many sharp edges, which makes the mold easily damaged by bumps. Summary of the invention

[0004] The utility model aims to provide a transfer molding parting device for a palm-shaped silicone rubber product, so as to at least solve the problems that the molds of the existing palm-shaped silicone rubber products are difficult to part when in use, are prone to causing product air curling and edge drawing, and have many sharp corners and edges on the parting surface, making the mold easily bumped and damaged.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A transfer molding parting device for a palm-shaped silicone rubber product, comprising an injection mold, a material cavity, a cavity upper mold, a cavity lower mold and a bottom plate;

[0007] A material cavity is arranged at the lower end of the injection mold, and the cavity upper mold is arranged below the injection mold, and the cavity upper mold is connected with the injection mold through a material cavity gap fit;

[0008] The upper end of the cavity lower mold is connected to the lower end of the cavity upper mold through a connecting piece, and the lower end of the cavity lower mold is arranged on the bottom plate and connected to the bottom plate through a connecting piece;

[0009] The junction between the upper mold of the cavity and the lower mold of the cavity is a parting line;

[0010] The bottom plate is also provided with an insert component, and the insert component is located in the lower mold of the cavity.

[0011] Furthermore, the parting line is calculated by CATIA software and is comprehensively obtained by combining the conditions that the product is easy to vulcanize and the mold is easy to process.

[0012] Furthermore, the insert assembly and the base plate are positioned via a boss.

[0013] Furthermore, the insert assembly includes insert one and insert two, insert one corresponds to the lower side of the thumb and the tip of the index finger, and insert two corresponds to the tip of the ring finger and the tip of the little finger.

[0014] Furthermore, the upper mold of the cavity, the lower mold of the cavity and the insert assembly together form a cavity. Furthermore, a glue injection port is provided on the lower bottom surface of the material cavity, and the position of the glue injection port corresponds to the wrist of the cavity, and is used to inject glue from the wrist of the cavity through the glue injection port.

[0015] Furthermore, the injection mold and the material cavity are provided with blowing holes for smoothly removing the injection mold and the upper mold of the cavity.

[0016] Furthermore, the blowing hole is L-shaped.

[0017] Furthermore, the connecting member is a positioning pin.

[0018] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0019] 1. The utility model is a transfer molding structure, and the utility model designs the finger part with a larger bending degree as an insert. At the same time, the parting surface of the utility model is relatively gentle. The transfer molding structure, the design of the finger part insert structure and the design of the parting surface solve the problem that the palm-type product is difficult to part. In addition, this parting method makes the utility model simple to process and has higher matching accuracy.

[0020] 2. The parting surface of the utility model is relatively gentle, which is conducive to glue discharge and exhaust during vulcanization, effectively solving the problem of easy air rolling and edge drawing of palm-shaped products, thereby solving the problem of easy defects of palm-shaped products;

[0021] 3. The successful application of the utility model can significantly improve the qualification rate and production efficiency of palm-type products, thereby improving economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, drawings of other embodiments can be obtained based on these drawings without paying creative work.

[0023] Figure 1 The structure of a palm-shaped silicone rubber product Figure 1 ;

[0024] Figure 2 The structure of a palm-shaped silicone rubber product Figure 2 ;

[0025] Figure 3 It is a top view of the utility model;

[0026] Figure 4 yes Figure 3 Sectional view of the AA section;

[0027] Figure 5 It is a parting line diagram calculated directly using CATIA software;

[0028] Figure 6 This is a schematic diagram of the parting line after adjustment with reference to CATIA software;

[0029] Figure 7 This is a schematic diagram of the palm and finger base lines;

[0030] Figure 8 This is a schematic diagram of the parting line at the tip of the little finger and the ring finger;

[0031] Fig. 9 This is a schematic diagram of the dividing line between the tip of the index finger and the thumb;

[0032] The symbols in the figure are:

[0033] 1-injection mold, 2-cavity upper mold, 3-cavity lower mold, 4-base plate, 5-locating pin, 6-insert assembly, 7-blowing hole, 8-air nozzle, 9-steel plate, 10-glue injection port. DETAILED DESCRIPTION

[0034] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively with reference to the relevant drawings. The drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly and comprehensively understood.

[0035] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0036] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, they can be fixedly connected or set, or detachably connected or set, or integrally connected or set. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] Example:

[0038] like Figure 4 As shown, this embodiment provides a transfer molding parting device for a palm-shaped silicone rubber product, comprising an injection mold 1, a cavity upper mold 2, a cavity lower mold 3 and a base plate 4.

[0039] like Figure 3 As shown, the injection mold 1 is arranged at the top of this embodiment. A material cavity is integrally formed at the lower end of the injection mold 1, and a glue injection port 10 is provided on the lower bottom surface of the material cavity. The position of the glue injection port 10 corresponds to the wrist of the cavity structure, so that glue can be injected from the wrist of the cavity through the glue injection port 10. Figure 4 As shown, the injection mold 1 and the material cavity are also provided with an L-shaped blowing hole 7, one end of the L-shaped blowing hole 7 is connected to the air nozzle 8, and the air nozzle 8 is arranged on one side of the injection mold 1, one end is connected to the outside, and the other end is connected to the L-shaped blowing hole 7, so that air can be blown into the blowing hole 7 through the air nozzle 8, thereby ensuring that the internal and external pressures of the utility model are the same when the mold is removed, so that the injection mold 1 and the cavity upper mold 2 can be easily removed. A steel plate 9 is also arranged on the lower bottom surface inside the material cavity, and the other end of the L-shaped blowing hole 7 is arranged above the steel plate 9. The design of the steel plate 9 can prevent the rubber from blocking the blowing hole 7 during the vulcanization process, so that the blowing step can be carried out smoothly. This embodiment is designed in the form of full injection, and the volume of the material cavity is larger than the volume of the cavity.

[0040] The cavity part of this embodiment adopts a two-open mold structure. Figure 4 As shown, the cavity upper mold 2 is located directly below the injection mold 1, the upper end of the cavity upper mold 2 is connected to the lower end of the injection mold 1 through the cavity clearance fit, the lower end of the cavity upper mold 2 is connected to the upper end of the cavity lower mold 3 through the positioning pin 5, and the lower end of the cavity lower mold 3 is set on the bottom plate 4 and connected to the bottom plate 4 through the positioning pin 5.

[0041] The bottom plate 4 is a plate-like structure and is arranged at the bottom of this embodiment. The length and width of the bottom plate 4 are respectively equal to the length and width of the injection mold 1, and are respectively larger than the length and width of the cavity upper mold 2 and the cavity lower mold 3, so that the cavity upper mold 2 and the cavity lower mold 3 can be stably located on the bottom plate 4.

[0042] The bottom plate 4 is also provided with an insert assembly 6, which is positioned with the bottom plate 4 by a boss. The insert assembly 6 is located on the bottom plate 4 and in the cavity lower mold 3. The insert assembly 6 includes an insert 1 and an insert 2, wherein the insert 1 corresponds to the lower side of the thumb and the tip of the index finger, and the insert 2 corresponds to the tip of the ring finger and the tip of the little finger. The cavity is formed by the cavity upper mold 2, the cavity lower mold 3 and the insert assembly 6, and the shape and size of the cavity are consistent with the shape and size of the cavity. Figure 1 The palm-shaped silicone rubber product shown in the figure is consistent, so that when the utility model is used, it can be obtained by injecting glue into the cavity and other steps. Figure 1 Palm-type silicone rubber product shown.

[0043] The parting line design of this embodiment is as follows: After placing the palm-shaped silicone rubber product in a suitable position in CATIA, the parting line of the palm-shaped silicone rubber product can be obtained by the reflection line command. However, due to the complex surface structure of the palm-shaped silicone rubber product, the parting line made by the software is messy and cannot be used for mold design. Figure 5 As shown, Figure 5 The black line in the figure is the parting line. Therefore, in this embodiment, under the premise that the palm-shaped silicone rubber product is easy to vulcanize and the mold is easy to process, the approximate trend of the parting line calculated by the software is referred to, and the parting line at the palm and wrist is remade to be smooth, such as Figure 6 As shown, Figure 6 The black line in the figure is the parting line, so the parting surface of the utility model will be smooth. At the same time, the finger part of the palm-type silicone rubber product is difficult to achieve normal parting due to its large curvature, so the finger part is separated by the quadrant point, such as Figure 7 , Figure 8 , Fig. 9 As shown, Figure 7 , Figure 8 , Fig. 9 The black lines in the figure are parting lines.

[0044] The operation process of this embodiment is as follows:

[0045] This embodiment adopts the full glue injection form when designing. It can also adopt the half glue filling and half glue injection form when using, that is, a part of the glue is first filled in the mold cavity of this embodiment, and the other part of the glue is injected from the material cavity.

[0046] The operation steps of full injection form:

[0047] 1. Brush the inside of the material cavity and the mold cavity of this embodiment with a release agent;

[0048] 2. Preheat the present embodiment on a flat vulcanizing machine. After reaching a predetermined temperature, spread the sheet rubber material flat in the material cavity, close the mold, and start vulcanization.

[0049] 3. After the vulcanization is completed, since the present embodiment is vulcanized on a vacuum device, the interior of the present embodiment is under negative pressure. In addition, the present embodiment is designed to be fully injected with glue, and the material cavity is deep, so it is difficult to open the present embodiment. At this time, it is necessary to blow air into the blowing hole 7 reserved in advance on the present embodiment to ensure that the pressure inside and outside the present embodiment is the same, so that the injection mold 1 and the cavity upper mold 2 can be easily removed;

[0050] Fourth, separate the cavity lower mold 3 and the bottom plate 4, grab the palm part of the vulcanized product and drag it outward, and the product can be taken out.

[0051] The second step of the half-filling and half-injection method is different from the full-injection method, as follows:

[0052] The embodiment is placed on a flat vulcanizer for preheating. After reaching a predetermined temperature, the rubber material is kneaded into a stick shape and spread on the palm area of ​​the cavity. A small amount of sheet rubber material is spread flat in the cavity, and the mold is closed to start vulcanization.

[0053] The remaining steps are the same as the full injection method.

[0054] The above specific examples are used to illustrate the present invention, which are only used to help understand the present invention and are not intended to limit the present invention. For those skilled in the art of the present invention, some simple deductions, deformations or substitutions can be made based on the idea of ​​the present invention.

Claims

1. A transfer molding parting device for a palm-shaped silicone rubber product, characterized in that: It comprises an injection mold (1), a material cavity, a cavity upper mold (2), a cavity lower mold (3) and a base plate (4); The lower end of the injection mold (1) is provided with a material cavity, the lower part of the injection mold (1) is provided with the cavity upper mold (2), and the cavity upper mold (2) is connected to the injection mold (1) through a material cavity clearance fit; The upper end of the cavity lower mold (3) is connected to the lower end of the cavity upper mold (2) via a connecting piece, and the lower end of the cavity lower mold (3) is arranged on the bottom plate (4) and connected to the bottom plate (4) via a connecting piece; The junction between the cavity upper mold (2) and the cavity lower mold (3) is a parting line; The bottom plate (4) is also provided with an insert component (6), and the insert component (6) is located in the cavity lower mold (3).

2. A palm-shaped silicone rubber product transfer molding parting device according to claim 1, characterized in that: The parting line is calculated by CATIA software and is comprehensively obtained by combining the conditions that make the product easy to vulcanize and the mold easy to process.

3. A palm-shaped silicone rubber product transfer molding parting device according to claim 1, characterized in that: The insert assembly (6) and the base plate (4) are positioned via a boss.

4. A transfer molding parting device for palm-shaped silicone rubber products according to claim 3, characterized in that: The insert component (6) comprises an insert 1 and an insert 2, wherein the insert 1 corresponds to the lower side of the thumb and the tip of the index finger, and the insert 2 corresponds to the tip of the ring finger and the tip of the little finger.

5. A palm-shaped silicone rubber product transfer molding parting device according to claim 1, characterized in that: The cavity upper die (2), the cavity lower die (3) and the insert assembly (6) together form a cavity.

6. A transfer molding parting device for palm-shaped silicone rubber products according to claim 5, characterized in that: A glue injection port (10) is provided on the lower bottom surface of the material cavity, and the position of the glue injection port (10) corresponds to the wrist of the cavity, and is used for injecting glue from the wrist of the cavity through the glue injection port (10).

7. A transfer molding parting device for palm-shaped silicone rubber products according to claim 1, characterized in that: The injection mold (1) and the material cavity are provided with a blowing hole (7) for smoothly removing the injection mold (1) and the cavity upper mold (2).

8. A transfer molding parting device for palm-shaped silicone rubber products according to claim 7, characterized in that: The blowing hole (7) is L-shaped.

9. A transfer molding parting device for palm-shaped silicone rubber products according to claim 1, characterized in that: The connecting piece is a positioning pin.

Images