Injection mold for encapsulating thermoplastic elastomer

Abstract

The utility model discloses an injection mold for thermoplastic elastomer encapsulation, which comprises a rack and further comprises an opening and closing mechanism, the opening and closing mechanism is arranged in the rack and comprises a fixed shaft, a lantern ring, a connecting plate, a mold and an air cylinder, the fixed shaft is arranged in the center of the bottom of the rack, the lantern ring is sleeved on the periphery of the fixed shaft, and the connecting plate is connected with the mold. During mold closing, the power end of the air cylinder is pushed out, the mold is located at the bottom of the fixing shaft for precise mold closing, injection molding operation for thermoplastic elastomer rubber coating is conducted, after injection molding cooling is completed, the power end of the air cylinder retracts, the mold is driven by the connecting rod to be unfolded towards the two sides around the rotating shaft, and in the overturning opening process of the mold, an internal mold cavity faces downwards; and the shaped injection molding product can automatically fall off and fall out under the action of gravity, discharging is completed, manual intervention or additional arrangement of demolding equipment is not needed, and demolding convenience is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to an injection mold for thermoplastic elastomer encapsulation. Background Technique

[0002] Thermoplastic elastomer, also known as artificial rubber or synthetic rubber, has excellent properties such as high elasticity, aging resistance, and oil resistance of traditional cross-linked vulcanized rubber, and at the same time has the characteristics of convenient processing and a wide range of processing methods of ordinary plastics. It can be produced by processing methods such as injection molding, extrusion, and blow molding, and is widely used.

[0003] The existing thermoplastic elastomers have the following drawbacks during injection molding: The existing injection molds generally use the method of horizontal clamping or vertical clamping for clamping and opening. After injection molding and cooling and then opening the mold, the thermoplastic elastomer products are easily embedded inside the mold, and manual or other auxiliary equipment is still required for demolding and taking out the products. The process is cumbersome and not convenient enough. Therefore, we propose an injection mold for thermoplastic elastomer encapsulation. Content of the Utility Model

[0004] The main purpose of the utility model is to provide an injection mold for thermoplastic elastomer encapsulation. By setting an opening and closing mechanism inside the frame and adopting the method of inclined clamping and opening, the product can be automatically discharged by the action of gravity after opening the mold, which can effectively solve the problems in the background technique.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] An injection mold for thermoplastic elastomer encapsulation includes a frame and an opening and closing mechanism. The opening and closing mechanism is arranged inside the frame. The opening and closing mechanism includes a fixed shaft, a collar, a connecting plate, a mold, and a cylinder. A fixed shaft is arranged at the center of the bottom of the frame, and a collar is sleeved on the outer periphery of the fixed shaft. Connecting plates are fixedly connected to the bottom of the collar and are connected to the mold through the connecting plates. Cylinders are installed on both sides inside the frame, and the power output ends of the cylinders are connected to the surface of the mold.

[0007] Further, it also includes an injection molding mechanism. The injection molding mechanism is arranged on the surface of the frame. The injection molding mechanism includes an injection hole, a machine table, an injection molding body, and an injection tube. One side of the surface of the mold is provided with an injection hole communicating with the internal mold cavity. The injection molding body is slidably connected to the top of the machine table, and the output end of the injection molding body is installed with an injection tube corresponding to the position of the injection hole. There is a machine table and an injection molding body on one side of the frame. During the injection molding process, the mold first completes the mold closing. After the mold closing, the position of the injection hole is exactly aligned with the position of the injection tube. At this time, the injection molding body slides along the machine table so that the injection tube just inserts into the injection hole and docks with the mold, and then the injection molding process can be carried out. After the injection molding is completed, the injection molding body drives the injection tube to move horizontally away. After the inside of the mold is cooled, the mold is opened for demolding operation.

[0008] Further, the mold is located at the bottom of the fixed shaft, and the central position of the mold is aligned with the central position of the fixed shaft, ensuring that the mold can be accurately closed.

[0009] Further, a connecting rod is installed between the power output end of the air cylinder and the surface of the mold, and rotating shafts are installed at both connection points of the connecting rod. The connecting rod and the rotating shaft play a connecting role, enabling the operation of the power end of the air cylinder to drive the opening and closing of the mold.

[0010] Further, a push rod connected to an external power component is installed at one end of the frame away from the injection tube, and a push ring is arranged at one end of the push rod facing the mold. During the mold closing and injection molding process, under the action of the external power component, the push rod drives the push ring to abut against the surface of the mold, cooperating with the injection tube to ensure that the mold is in the closed state during the injection molding process.

[0011] Compared with the prior art, the utility model has the following beneficial effects: The mold is connected to the fixed shaft at the bottom of the frame through the connecting plate and the collar at the top. The two side molds are respectively connected to the fixed shaft through the collars. The collars can rotate around the outer circumference of the fixed shaft to drive the deflection of the mold. During the mold closing, the power end of the air cylinder is pushed out, and the mold is accurately closed at the bottom of the fixed shaft for injection molding operation of thermoplastic elastomer overmolding. After the injection molding and cooling are completed, the power end of the air cylinder retracts, and the connecting rod drives the molds to unfold around the rotating shafts to both sides respectively. During the process of the mold flipping and opening, the internal mold cavity faces downward, and the shaped injection molded products can fall off by themselves under the action of gravity and fall out, completing the discharging. There is no need for manual intervention or additional demolding equipment, improving the demolding convenience. There is a machine table and an injection molding body on one side of the frame. During the injection molding process, the mold first completes the mold closing. After the mold closing, the position of the injection hole is exactly aligned with the position of the injection tube. At this time, the injection molding body slides along the machine table so that the injection tube just inserts into the injection hole and docks with the mold, and then the injection molding process can be carried out. After the injection molding is completed, the injection molding body drives the injection tube to move horizontally away. After the inside of the mold is cooled, the mold is opened for demolding operation. Description of the Drawings

[0012] Figure 1This is a schematic diagram of the overall structure of an injection mold for thermoplastic elastomer overmolding according to the present utility model.

[0013] Figure 2 This is a schematic top view of the connection between the fixed shaft and the mold of an injection mold for thermoplastic elastomer overmolding according to the present utility model.

[0014] Figure 3 This is a schematic diagram of the structure of an injection mold for thermoplastic elastomer overmolding according to the present utility model in the mold closed state.

[0015] In the figure: 1, frame; 2, opening and closing mechanism; 201, fixed shaft; 202, collar; 203, connecting plate; 204, mold; 205, cylinder; 206, connecting rod; 207, rotating shaft; 3, injection mechanism; 301, injection hole; 302, machine table; 303, injection body; 304, injection pipe; 305, push rod; 306, push ring. Detailed implementation manners

[0016] In order to make the technical means, creative features, achieved purposes and effects of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific implementation manners.

[0017] As Figures 1-3 shown, an injection mold for thermoplastic elastomer overmolding includes a frame 1 and also includes an opening and closing mechanism 2. The opening and closing mechanism 2 is arranged inside the frame 1. The opening and closing mechanism 2 includes a fixed shaft 201, a collar 202, a connecting plate 203, a mold 204 and a cylinder 205. The fixed shaft 201 is arranged at the center position of the bottom of the frame 1 and the collar 202 is sleeved on the outer periphery of the fixed shaft 201. The bottom of the collar 202 is fixedly connected with the connecting plate 203 and is connected to the mold 204 through the connecting plate 203. Cylinders 205 are installed on both sides inside the frame 1 and the power output ends of the cylinders 205 are connected to the surface of the mold 204.

[0018] Among them, it further includes an injection molding mechanism 3. The injection molding mechanism 3 is arranged on the surface of the frame 1. The injection molding mechanism 3 includes an injection hole 301, a machine table 302, an injection molding body 303 and an injection pipe 304. One side of the surface of the mold 204 is provided with an injection hole 301 communicating with the internal mold cavity. The injection molding body 303 is slidably connected to the top of the machine table 302, and an injection pipe 304 corresponding to the position of the injection hole 301 is installed at the output end of the injection molding body 303. The machine table 302 and the injection molding body 303 are arranged on one side of the frame 1. During the injection molding process, the mold 204 first completes the mold closing. After the mold closing, the position of the injection hole 301 is exactly aligned with the position of the injection pipe 304. At this time, the injection molding body 303 slides along the machine table 302 so that the injection pipe 304 is exactly inserted into the injection hole 301 and docked with the mold 204, and then the injection molding process can be carried out. After the injection molding is completed, the injection molding body 303 drives the injection pipe 304 to move horizontally away. After the inside of the mold 204 is cooled, the opening and demolding operation is carried out.

[0019] Among them, the mold 204 is located at the bottom of the fixed shaft 201, and the central position of the mold 204 is aligned with the central position of the fixed shaft 201. A connecting rod 206 is installed between the power output end of the air cylinder 205 and the surface of the mold 204. Rotating shafts 207 are installed at both connection points of the connecting rod 206. To ensure that the mold 204 can be accurately closed, the connecting rod 206 and the rotating shafts 207 play a connecting role, so that the operation of the power end of the air cylinder 205 can drive the opening and closing of the mold 204.

[0020] Among them, a push rod 305 connected to an external power component is installed at one end of the frame 1 far from the injection pipe 304. A push ring 306 is arranged at one end of the push rod 305 facing the mold 204. During the mold closing and injection molding process, under the action of the external power component, the push rod 305 drives the push ring 306 to abut against the surface of the mold 204, and cooperates with the injection pipe 304 to ensure that the mold 204 is in the closed state during the injection molding process.

[0021] It should be noted that the present utility model is an injection mold for thermoplastic elastomer encapsulation. During operation, the mold 204 is connected to the fixed shaft 201 at the bottom of the frame 1 through the connecting plate 203 and the collar 202 at the top. The two side molds 204 are respectively connected to the fixed shaft 201 through the collars 202. The collar 202 can rotate around the outer periphery of the fixed shaft 201 to drive the deflection of the mold 204. When closing the mold, the power end of the cylinder 205 is pushed out, and the mold 204 is accurately closed at the bottom of the fixed shaft 201 for injection molding operation of thermoplastic elastomer encapsulation. After the injection molding and cooling are completed, the power end of the cylinder 205 retracts, and the mold 204 is driven to unfold around the rotating shaft 207 to both sides through the connecting rod 206. During the process of the mold 204 being flipped and opened, the internal cavity faces downward, and the shaped injection molded product can fall off and drop out under the action of gravity, completing the discharging, without manual intervention or additional demolding equipment, improving the demolding convenience. There is a machine table 302 and an injection molding body 303 on one side of the frame 1. During the injection molding process, the mold 204 first closes. After closing, the position of the injection hole 301 is exactly aligned with the position of the injection pipe 304. At this time, the injection molding body 303 slides along the machine table 302 so that the injection pipe 304 is exactly inserted into the injection hole 301 and docked with the mold 204, and then the injection molding process can be carried out. After the injection molding is completed, the injection molding body 303 drives the injection pipe 304 to move horizontally away, and the mold 204 is cooled internally and then undergoes an opening and discharging operation.

[0022] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art of this industry should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. An injection mold for thermoplastic elastomer encapsulation, comprising a frame (1), characterized in that: The invention also comprises an opening and closing mechanism (2), wherein the opening and closing mechanism (2) is arranged inside the frame (1), and the opening and closing mechanism (2) comprises a fixed shaft (201), a sleeve ring (202), a connecting plate (203), a mold (204) and a cylinder (205); a fixed shaft (201) is arranged at the center of the bottom of the frame (1), and the outer periphery of the fixed shaft (201) is sleeved with a sleeve ring (202); the bottom of the sleeve ring (202) is fixedly connected with a connecting plate (203) and is connected to the mold (204) through the connecting plate (203); cylinders (205) are installed on both sides of the frame (1), and the power output end of the cylinder (205) is connected to the surface of the mold (204).

2. The thermoplastic elastomer encapsulation injection mold (204) according to claim 1, characterized in that: The invention also comprises an injection molding mechanism (3), wherein the surface of the frame (1) is provided with the injection molding mechanism (3), and the injection molding mechanism (3) comprises an injection molding hole (301), a machine platform (302), an injection molding body (303) and an injection molding tube (304); one side of the surface of the mold (204) is provided with an injection molding hole (301) which is connected to the internal mold cavity; the top of the machine platform (302) is slidably connected with the injection molding body (303), and the output end of the injection molding body (303) is installed with an injection molding tube (304) corresponding to the position of the injection molding hole (301).

3. The thermoplastic elastomer encapsulation injection mold (204) according to claim 1, characterized in that: The mold (204) is located at the bottom of the fixed shaft (201) and the center position of the mold (204) is aligned with the center position of the fixed shaft (201).

4. The thermoplastic elastomer encapsulation injection mold (204) according to claim 1, characterized in that: A connecting rod (206) is installed between the power output end of the cylinder (205) and the surface of the mold (204), and rotating shafts (207) are installed at the connection points at both ends of the connecting rod (206).

5. The thermoplastic elastomer encapsulation injection mold (204) according to claim 2, characterized in that: A push rod (305) connected to an external power component is installed at one end of the frame (1) away from the injection tube (304), and a push ring (306) is arranged at one end of the push rod (305) facing the mold (204).

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