Liquid silica gel mold for ejection of air cylinder jig

Abstract

The utility model discloses a liquid silicone rubber mold ejected by an air cylinder jig, and belongs to the technical field of molds. The die comprises a mounting plate, a linear air cylinder fixedly mounted on the mounting plate, a male die fixedly mounted at the movable end of the linear air cylinder, a middle plate movably mounted on the linear side, away from the air cylinder, of the male die, a female die arranged on the side, away from the male die, of the middle plate and an ejector pin slidably mounted in the female die, and a sliding rod is fixedly connected to the mounting plate. The end, away from the mounting plate, of the sliding rod sequentially penetrates through the male die and the middle plate and is fixedly connected to the female die, and a material injection opening is formed in the female die and communicates with an inner cavity of the female die. Through cooperative use of the devices, the middle plate and the ejector pin can correspondingly move no matter a model is attached to a male die or a female die when the device is used for opening the die, so that the model is helped to be smoothly demolded, and manual intervention is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a liquid silicone mold ejected by a cylinder jig. Background Technique

[0002] A mold is various dies and tools used in industrial production to obtain required products through methods such as injection molding, blow molding, extrusion, die casting, or forging, stamping, etc. It is a tool for making molded articles, consisting of various parts, and can realize the processing of the article's appearance by changing the physical state of the molding material.

[0003] Upon investigation, the Chinese utility model patent discloses a liquid silicone mold ejected by a cylinder jig (publication number: CN210758908U). For the demolding of silicone products, the silicone products are located between the middle plate and the lower mold. The injection molding machine ejector rod is arranged on the lower mold and abuts against the middle plate. The ejection jig is arranged on one side of the upper mold and the lower mold. The ejection jig has a jig main board, a jig ejector rod arranged on one side of the jig main board, a support member on the other side of the jig main board, a mutually cooperating guide rod and a guide limit block. The cylinder operates the jig main board, and the travel switch cooperates with the adjustment block to operate the guide rod. The travel switch contacts the guide limit block and stops operating. When the silicone products are demolded, the cylinder operates the jig main board to be located between the upper mold and the middle plate. The end of the support member far away from the jig main board abuts against the upper mold. The injection molding machine ejector rod abuts against the middle plate and displaces upward towards the upper mold. The silicone products are located on the middle plate, and the jig ejector rod abuts against the silicone products and ejects them from the middle plate.

[0004] In the above patent, the silicone model is formed in the cavity between the lower mold and the middle plate, and the formed mold on the middle plate is ejected by the jig ejector rod, thereby completing the demolding of the model. However, when the mold is opened, the model is very likely to adhere to the lower mold. At this time, the jig ejector rod will not be able to help the model fall off the lower mold, and manual intervention is still required to complete the demolding of the model, increasing the additional labor cost.

[0005] Therefore, the utility model provides a liquid silicone mold ejected by a cylinder jig to solve the above problems. Summary of the Utility Model

[0006] The utility model provides a liquid silicone mold ejected by a cylinder jig, aiming to solve the problems raised in the background technique.

[0007] To achieve the above object, the present utility model provides the following technical solution: A liquid silicone rubber mold with a cylinder fixture for ejection. The mold includes a mounting plate, a linear cylinder fixedly installed on the mounting plate, a convex mold fixedly installed on the movable end of the linear cylinder, a middle plate movably installed on the side of the convex mold away from the linear cylinder, a concave mold arranged on the side of the middle plate away from the convex mold, and a ejector pin slidably installed inside the concave mold. A slide bar is fixedly connected to the mounting plate. One end of the slide bar away from the mounting plate sequentially penetrates through the convex mold and the middle plate and is fixedly connected to the concave mold. A material injection port is opened on the concave mold, and the material injection port is communicated with the inner cavity of the concave mold.

[0008] As a preferred technical solution of the present application, a connecting rod is fixedly connected to the side of the middle plate close to the convex mold. The connecting rod penetrates through the convex mold, and one end of the connecting rod away from the middle plate is fixedly connected to a first contact plate. A supporting column is fixedly connected to the mounting plate.

[0009] As a preferred technical solution of the present application, a first spring is sleeved on the connecting rod. One end of the first spring is fixedly connected to the convex mold, and the other end of the first spring is fixedly connected to the first contact plate.

[0010] As a preferred technical solution of the present application, the ejector pin penetrates through the concave mold, and one end of the ejector pin away from the concave mold is fixedly connected to a second contact plate.

[0011] As a preferred technical solution of the present application, insertion rods are fixedly connected to both sides of the convex mold. A moving frame is fixedly connected to the two insertion rods together. Limit blocks are fixedly connected to both sides of the concave mold. The limit blocks penetrate through the limit blocks, and a strip-shaped sliding groove is opened on the moving frame.

[0012] As a preferred technical solution of the present application, a telescopic rod is fixedly connected to the side of the concave mold away from the middle plate. The movable end of the telescopic rod is fixedly connected to the second contact plate. A second spring is sleeved on the telescopic rod. One end of the second spring is fixedly connected to the second contact plate, and the other end of the second spring is fixedly connected to the telescopic rod.

[0013] Beneficial effects

[0014] The structure of the present utility model is simple and convenient to use. Through the setting of the middle plate and the ejector pin, when the mold is opened, no matter whether the model adheres to the convex mold or the concave mold, the middle plate and the ejector pin will move correspondingly, thereby helping the model to be demolded smoothly and reducing manual intervention. Description of the drawings

[0015] Figure 1 Structural schematic diagram of a liquid silicone rubber mold with a cylinder fixture for ejection Figure 1 ;

[0016] Figure 2 Structural schematic diagram of a liquid silicone rubber mold with a cylinder fixture for ejection Figure 2 ;

[0017] Figure 3 Schematic diagram of the installation of a connecting rod in a liquid silicone rubber mold ejected by a cylinder fixture;

[0018] Figure 4 Schematic diagram of the structure of a thimble in a liquid silicone rubber mold ejected by a cylinder fixture;

[0019] Figure 5 Cross-sectional view of a female mold in a liquid silicone rubber mold ejected by a cylinder fixture.

[0020] In the figure:

[0021] 1. mounting plate; 2. male mold; 3. female mold; 4. middle plate; 5. connecting rod; 6. first contact plate;

[0022] 7. first spring; 8. abutting post; 9. linear cylinder; 10. sliding rod; 11. thimble;

[0023] 12. telescopic rod; 13. second spring; 14. second contact plate; 15. moving frame;

[0024] 16. limiting block; 17. inserting rod. Detailed implementation manners

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0026] The present invention provides a liquid silicone rubber mold ejected by a cylinder fixture, as shown in Figure 1 , Figure 2 and Figure 3 . The mold includes a mounting plate 1, a linear cylinder 9 fixedly installed on the mounting plate 1, a male mold 2 fixedly installed on the movable end of the linear cylinder 9, a middle plate 4 movably installed on the side of the male mold 2 away from the linear cylinder 9, a female mold 3 disposed on the side of the middle plate 4 away from the male mold 2, and a thimble 11 slidably installed inside the female mold 3. A sliding rod 10 is fixedly connected to the mounting plate 1. One end of the sliding rod 10 away from the mounting plate 1 sequentially penetrates through the male mold 2 and the middle plate 4 and is fixedly connected to the female mold 3. A material injection port is opened on the female mold 3, and the material injection port is communicated with the inner cavity of the female mold 3.

[0027] By controlling the linear cylinder 9, the movable end of the linear cylinder 9 is made to push the punch 2 and the middle plate 4 provided on the punch 2 towards the die 3. The setting of the slide rod 10 enables the punch 2, the middle plate 4 and the die 3 to form an integral whole, and the slide rod 10 penetrates through the punch 2 and the middle plate 4. When the punch 2 and the middle plate 4 move, the slide rod 10 can provide good stability for the two. When the punch 2, the middle plate 4 and the die 3 are completely and closely attached together, a complete mold is formed. After injecting the liquid silicone raw material into the main material port, the silicone will flow into the inner cavity of the mold, thereby realizing the shaping of the model.

[0028] After the liquid silicone is molded, the mold needs to be opened to take out the model. Since the model will adhere to the punch 2 or the die 3 when the mold is opened, the middle plate 4 and the ejector pin 11 are both used to assist the model in demolding. By controlling the linear cylinder 9, the movable end of the linear cylinder 9 drives the punch 2 and the middle plate 4 provided on the punch 2 to gradually move away from the die 3. During the mold opening process, the middle plate 4 will also be separated from the punch 2. When the model adheres to the punch 2, it is convenient to push the model away from the punch 2. At the same time, the ejector pin 11 inside the die 3 will also work. When the model adheres to the die 3, it is convenient to eject the model inside the die 3.

[0029] Furthermore, in order to enable the middle plate 4 to assist the model in demolding, as Figure 1 、 Figure 3 and Figure 4 shown, a connecting rod 5 is fixedly connected to the side of the middle plate 4 close to the punch 2. The connecting rod 5 penetrates through the punch 2, and a first contact plate 6 is fixedly connected to the end of the connecting rod 5 away from the middle plate 4. A resisting column 8 is fixedly connected to the mounting plate 1.

[0030] A first spring 7 is sleeved on the connecting rod 5. One end of the first spring 7 is fixedly connected to the punch 2, and the other end of the first spring 7 is fixedly connected to the first contact plate 6.

[0031] Under the action of the first spring 7, the middle plate 4 can be made to closely adhere to the punch 2. When the mold is opened, the linear cylinder 9 drives the middle plate 4 and the punch 2 to move synchronously. The connecting rod 5 and the first contact plate 6 mounted on the middle plate 4 will also move accordingly. When the first contact plate 6 moves a certain distance, it will come into contact with the resisting column 8. At this time, the linear cylinder 9 will drive the punch 2 to continue moving, while the resisting column 8 will resist the first contact plate 6, thereby causing the middle plate 4 to gradually separate from the punch 2, so as to realize the middle plate 4 pushing the model on the punch 2 down.

[0032] There are two connecting rods 5 which are symmetrically installed on the middle plate 4. At the same time, with the cooperation of the punch 2, the stability of the middle plate 4 during movement can be fully guaranteed. During the process of the separation of the middle plate 4 and the punch 2, the first spring 7 will also be compressed. During the next mold closing, when the linear cylinder 9 pushes the punch 2 to move towards the die 3, the first spring 7 will be gradually released. At the same time, through the first touch plate 6 and the connecting rod 5, the middle plate 4 is driven again, so that the middle plate 4 is close to the die 3.

[0033] Furthermore, in order to enable the ejector pin 11 to assist in the demolding of the model, as Figure 1 , Figure 4 and Figure 5 shown, the ejector pin 11 penetrates the die 3, and a second touch plate 14 is fixedly connected to the end of the ejector pin 11 away from the die 3.

[0034] Insertion rods 17 are fixedly connected to both sides of the punch 2, a moving frame 15 is fixedly connected to the two insertion rods 17 together, limiting blocks 16 are fixedly connected to both sides of the die 3, the limiting blocks 16 penetrate the limiting blocks 16, and strip-shaped chutes are provided on the moving frame 15.

[0035] A telescopic rod 12 is fixedly connected to the side of the die 3 away from the middle plate 4, the movable end of the telescopic rod 12 is fixedly connected to the second touch plate 14, a second spring 13 is sleeved on the telescopic rod 12, one end of the second spring 13 is fixedly connected to the second touch plate 14, and the other end of the second spring 13 is fixedly connected to the telescopic rod 12.

[0036] Under the action of the second spring 13, the second touch plate 14 can be made to pull the ejector pin 11, so that the inclined surface of the ejector pin 11 is close to the die 3, preventing the silicone from overflowing. When the mold is opened, the die 3 will not move in place, the linear cylinder 9 drives the punch 2 to move, and when the punch 2 moves, it can drive the moving frame 15 to move. When the moving frame 15 moves, it will come into contact with and squeeze the second touch plate 14, so that the second touch plate 14 can drive the ejector pin 11 to move, so that the ejector pin 11 can eject the model inside the die 3.

[0037] The limiting blocks 16 provided on the die 3 penetrate the moving frame 15. The setting of the limiting blocks 16 can effectively improve the stability of the moving frame 15 during movement. The strip-shaped chutes provided on the moving frame 15 provide space for the limiting blocks 16 when the moving frame 15 moves.

[0038] During the process of the moving frame 15 squeezing the second touch plate 14, the second spring 13 will also be compressed accordingly. During the next mold closing, as the punch 2 drives the moving frame 15 to move, finally the moving frame 15 will be separated from the second touch plate 14. During this process, the second spring 13 will gradually drive the ejector pin 11 back to the initial position through the second touch plate 14.

[0039] The above are only the preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present utility model.

Claims

1. A liquid silicone mold with a cylinder fixture for ejection, characterized in that: The mold includes a mounting plate (1), a linear cylinder (9) fixedly mounted on the mounting plate (1), a punch (2) fixedly mounted on the movable end of the linear cylinder (9), a middle plate (4) movably mounted on the side of the punch (2) away from the linear cylinder (9), a die (3) disposed on the side of the middle plate (4) away from the punch (2), and a thimble (11) slidably mounted inside the die (3). A slide bar (10) is fixedly connected to the mounting plate (1). One end of the slide bar (10) away from the mounting plate (1) sequentially penetrates through the punch (2) and the middle plate (4) and is fixedly connected to the die (3). A material injection port is formed in the die (3), and the material injection port is communicated with the inner cavity of the die (3).

2. The liquid silicone rubber mold with a cylinder fixture for ejection according to claim 1, wherein: A connecting rod (5) is fixedly connected to the side of the middle plate (4) close to the punch (2). The connecting rod (5) penetrates through the punch (2), and one end of the connecting rod (5) away from the middle plate (4) is fixedly connected to a first contact plate (6). A resisting column (8) is fixedly connected to the mounting plate (1).

3. A liquid silicone rubber mold with a cylinder fixture for ejection, characterized in that: A first spring (7) is sleeved on the connecting rod (5). One end of the first spring (7) is fixedly connected to the punch (2), and the other end of the first spring (7) is fixedly connected to the first contact plate (6).

4. A liquid silicone rubber mold for ejecting by a cylinder fixture according to claim 1, characterized in that: The thimble (11) penetrates through the die (3), and one end of the thimble (11) away from the die (3) is fixedly connected to a second contact plate (14).

5. A liquid silicone rubber mold with a cylinder fixture for ejecting, characterized in that: Insertion rods (17) are fixedly connected to both sides of the punch (2). A moving frame (15) is fixedly connected to the two insertion rods (17). Limit blocks (16) are fixedly connected to both sides of the die (3). The limit blocks (16) penetrate through the limit blocks (16), and a strip-shaped sliding groove is formed in the moving frame (15).

6. A liquid silicone rubber mold with a cylinder fixture for ejection, characterized in that: A telescopic rod (12) is fixedly connected to the side of the die (3) away from the middle plate (4). The movable end of the telescopic rod (12) is fixedly connected to the second contact plate (14). A second spring (13) is sleeved on the telescopic rod (12). One end of the second spring (13) is fixedly connected to the second contact plate (14), and the other end of the second spring (13) is fixedly connected to the telescopic rod (12).

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