Mold opening and closing buffer mechanism for injection mold

Abstract

The utility model relates to the technical field of mold opening and closing buffering, and discloses an injection mold opening and closing buffering mechanism which comprises a first mounting plate and a second mounting plate, an air cylinder is fixedly connected to the center of the left side of the first mounting plate, and an air inlet pipe of the air cylinder communicates with an external air pipe. The external air pipe injects air into the air cylinder, the output shaft of the air cylinder drives the movable mold to approach the fixed mold under the action of air pressure, and in the moving process, the air rod can synchronously extrude air in the air sleeve to be exhausted from the air tap; the air in the air sleeve is limited by the air flow through which the air nozzle can pass in the exhausting process and can resist the moving speed of the movable mold, so that the moving speed of the movable mold can be slowed down to form buffering, the impact force generated when the movable mold makes contact with the fixed mold can be effectively reduced, damage and deformation caused by too large impact force are avoided, and the service life of the mold is prolonged. And the purpose of protecting the mold is achieved, and application and popularization are facilitated.

Description

Technical Field

[0001] The present application relates to the technical field of mold opening and closing buffering, and in particular to an injection mold opening and closing buffering mechanism. Background Art

[0002] Injection molding, also known as injection molding, is a molding method that combines injection and molding. The advantages of injection molding are fast production speed, high efficiency, automated operation, a wide variety of colors, shapes from simple to complex, sizes from large to small, and precise product size. The product is easy to update and can be made into complex-shaped parts. Injection molding is suitable for mass production and complex-shaped products and other molding and processing fields.

[0003] However, in actual applications, most of the existing injection molds are usually driven by cylinders during opening and closing operations. When the cylinder is in use, the instantaneous increase in air pressure can quickly fit the mold together, but an impact force will also be generated between the movable mold and the fixed mold when they come into contact. The greater the air pressure, the greater the impact force. Over time, the mold is prone to damage and deformation, which is not conducive to promotion and use.

[0004] Therefore, those skilled in the art provide an injection mold opening and closing mold buffer mechanism to solve the problems raised in the above background technology. Utility Model Content

[0005] In order to solve the problem mentioned in the above background technology that when the cylinder is used, the instantaneous increase in air pressure can quickly fit the mold, but an impact force will be generated between the movable mold and the fixed mold when they come into contact, and the greater the air pressure, the greater the impact force. In the long run, the mold is prone to damage and deformation, which is not conducive to promotion and use, the present application provides an injection mold opening and closing buffer mechanism.

[0006] The present application provides an injection mold opening and closing buffer mechanism that adopts the following technical solution: it includes a first mounting plate and a second mounting plate, wherein a cylinder is fixedly connected to the left center of the first mounting plate, an air intake pipe of the cylinder is connected to an external air pipe, an output shaft of the cylinder is fixedly connected to a movable mold, a fixed mold is fixedly connected to the left side of the second mounting plate, an injection pipe is fixedly connected to the right center of the fixed mold and the second mounting plate, an air rod is fixedly connected to the top side of the movable mold, an air sleeve is fixedly connected to the left side of the second mounting plate, the air rod is slidably connected to the inner wall of the air sleeve, and an air nozzle is fixedly connected to the right side of the air sleeve.

[0007] Preferably, four guide rods are fixedly connected to the opposite sides of the first mounting plate and the second mounting plate, and guide blocks are slidably sleeved on the outer sides of the four guide rods. The four guide blocks are fixedly connected to the upper and lower sides of the movable mold respectively.

[0008] Preferably, the right sides of the four guide blocks are fixedly connected with springs, and the right ends of the four springs are fixedly connected to the second mounting plate.

[0009] Preferably, a rubber ring is fixedly connected to the left side of the fixed mold.

[0010] In summary, this application includes the following beneficial technical effects:

[0011] 1. By setting the gas rod and the gas sleeve, the external gas pipe injects the gas into the inside of the cylinder. The output shaft of the cylinder drives the movable mold to approach the fixed mold under the action of the gas pressure. During the movement, the gas rod will synchronously squeeze the air in the gas sleeve and discharge it from the air nozzle. However, the air in the gas sleeve is limited by the amount of air that can pass through the air nozzle during the discharge process, which will form an opposition to the moving speed of the movable mold, thereby slowing down the moving speed of the movable mold to form a buffer, and then effectively reducing the impact force generated when the movable mold contacts the fixed mold, avoiding damage and deformation caused by excessive impact force, achieving the purpose of protecting the mold, and facilitating its promotion and use.

[0012] 2. By setting the guide rod and the guide block, when the movable mold moves, the guide rod and the guide block cooperate with each other, so that the movable mold can keep moving in the horizontal direction to avoid deviation, and further ensure that the movable mold and the fixed mold maintain a horizontal overlap state when in contact. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the appearance structure of an injection mold opening and closing mold buffer mechanism in an embodiment of the present application;

[0014] Figure 2 It is a schematic cross-sectional structure diagram of an injection mold opening and closing mold buffer mechanism in an embodiment of the present application;

[0015] Figure 3 It is an injection mold opening and closing mold buffer mechanism in the embodiment of the present application. Figure 2 Schematic diagram of the structure with part A enlarged.

[0016] Explanation of the accompanying drawings: 1. first mounting plate; 2. second mounting plate; 3. cylinder; 4. movable mold; 5. fixed mold; 6. injection pipe; 7. gas rod; 8. gas sleeve; 9. gas nozzle; 10. guide rod; 11. guide block; 12. spring; 13. rubber ring. DETAILED DESCRIPTION

[0017] The following will be combined with the attached Figure 1-3 The technical solution of the utility model is described clearly and completely. Obviously, the described embodiments are part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] The present application embodiment discloses an injection mold opening and closing mold buffer mechanism, referring to Figure 1-3 , including a first mounting plate 1 and a second mounting plate 2, a cylinder 3 is fixedly connected at the left center of the first mounting plate 1, an air inlet pipe of the cylinder 3 is connected to an external air pipe, a movable mold 4 is fixedly connected to the output shaft of the cylinder 3, a fixed mold 5 is fixedly connected to the left side of the second mounting plate 2, a material injection pipe 6 is fixedly connected to the fixed mold 5 and the right center of the second mounting plate 2, a gas rod 7 is fixedly connected to the top side of the movable mold 4, a gas sleeve 8 is fixedly connected to the left side of the second mounting plate 2, the gas rod 7 is slidably connected to the inner wall of the gas sleeve 8, and a gas nozzle 9 is fixedly connected to the right side of the gas sleeve 8; by arranging the gas rod 7 and the gas sleeve 8, the external air pipe can be used to inject gas. The liquid body is injected into the interior of the cylinder 3. The output shaft of the cylinder 3 drives the movable mold 4 to approach the fixed mold 5 under the action of air pressure. During the movement, the air rod 7 will synchronously squeeze the air in the air sleeve 8 and discharge it from the air nozzle 9. However, the air in the air sleeve 8 is limited by the amount of air that can pass through the air nozzle 9 during the discharge process, which will oppose the moving speed of the movable mold 4, thereby slowing down the moving speed of the movable mold 4 to form a buffer, and further effectively reducing the impact force generated when the movable mold 4 contacts the fixed mold 5, avoiding damage and deformation caused by excessive impact force, thereby achieving the purpose of protecting the mold and facilitating its promotion and use.

[0019] In the present application, four guide rods 10 are fixedly connected to the opposite sides of the first mounting plate 1 and the second mounting plate 2, and guide blocks 11 are slidably sleeved on the outer sides of the four guide rods 10, and the four guide blocks 11 are respectively fixedly connected to the upper and lower sides of the movable mold 4; by setting the guide rods 10 and the guide blocks 11, when the movable mold 4 moves, the guide rods 10 and the guide blocks 11 cooperate, so that the movable mold 4 can maintain horizontal movement to avoid offset, and further ensure that the movable mold 4 and the fixed mold 5 maintain a horizontal overlap state when in contact.

[0020] In the present application, springs 12 are fixedly connected to the right sides of the four guide blocks 11, and the right ends of the four springs 12 are fixedly connected to the second mounting plate 2; by setting the springs 12, when the movable mold 4 approaches the fixed mold 5 for mold closing, the springs 12 are squeezed, and the reverse force formed by the springs 12 in the squeezed state acts on the movable mold 4 through the guide blocks 11, thereby further buffering the movable mold 4, slowing down the moving speed of the movable mold 4, and further improving the buffering protection degree of the mold.

[0021] In the present application, a rubber ring 13 is fixedly connected to the left side of the fixed mold 5; by providing the rubber ring 13, when the movable mold 4 and the fixed mold 5 are closed, the deformation formed by the rubber ring 13 can further reduce the impact force when the two are in contact, and at the same time can reduce the noise generated when the two are in contact, thereby reducing noise pollution.

[0022] The standard parts used in the utility model can all be purchased from the market, and special-shaped parts can be customized according to the instructions and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt the conventional models in the existing technology, and the circuit connection adopts the conventional connection method in the existing technology, which will not be described in detail here.

[0023] The implementation principle of the mold opening and closing buffer mechanism of an injection mold in the embodiment of the present application is as follows: when in use, an external air pipe injects gas into the interior of the air cylinder 3, and the output shaft of the air cylinder 3 drives the movable mold 4 to approach the fixed mold 5 under the action of air pressure. During the movement, the air rod 7 will synchronously squeeze the air in the air sleeve 8 and discharge it from the air nozzle 9. However, the air in the air sleeve 8 is limited by the amount of air that can pass through the air nozzle 9 during the discharge process, which will form an opposition to the movement speed of the movable mold 4, thereby slowing down the movement speed of the movable mold 4 to form a buffer, and further effectively reducing the impact force generated when the movable mold 4 contacts the fixed mold 5, avoiding damage and deformation caused by excessive impact force, thereby achieving the purpose of protecting the mold, and is conducive to promotion and use. During the movement, the guide rod 10 and the guide block 11 cooperate with each other to keep the movable mold 4 moving in the horizontal direction to avoid deviation, and further ensure that the movable mold 4 and the fixed mold 5 maintain a horizontal overlap state when in contact. When the movable mold 4 is close to the fixed mold 5 for mold closing, the spring 12 is squeezed, and the reverse force formed by the spring 12 in the squeezed state acts on the movable mold 4 through the guide block 11, thereby further buffering the movable mold 4, slowing down the moving speed of the movable mold 4, and further improving the buffering protection of the mold. When the movable mold 4 and the fixed mold 5 are molded, the deformation formed by the rubber ring 13 can further reduce the impact force when the two are in contact, and at the same time can reduce the noise generated when the two are in contact, thereby reducing noise pollution.

[0024] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0025] Secondly: In the drawings of the embodiments disclosed in the present invention, only the structures involved in the embodiments disclosed in the present invention are involved, and other structures can refer to the usual design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other.

Claims

1. A mold opening and closing buffer mechanism for an injection mold, comprising a first mounting plate (1) and a second mounting plate (2), characterized in that: A cylinder (3) is fixedly connected to the center of the left side of the first mounting plate (1); an air inlet pipe of the cylinder (3) is connected to an external air pipe; an output shaft of the cylinder (3) is fixedly connected to a movable mold (4); a fixed mold (5) is fixedly connected to the left side of the second mounting plate (2); an injection pipe (6) is fixedly connected to the fixed mold (5) and the center of the right side of the second mounting plate (2); a gas rod (7) is fixedly connected to the top side of the movable mold (4); a gas sleeve (8) is fixedly connected to the left side of the second mounting plate (2); the gas rod (7) is slidably connected to the inner wall of the gas sleeve (8); and a gas nozzle (9) is fixedly connected to the right side of the gas sleeve (8).

2. The injection mold opening and closing mold buffer mechanism according to claim 1, characterized in that: Four guide rods (10) are fixedly connected to the opposite side of the first mounting plate (1) and the second mounting plate (2), and guide blocks (11) are slidably sleeved on the outer sides of the four guide rods (10), and the four guide blocks (11) are respectively fixedly connected to the upper and lower sides of the movable mold (4).

3. The injection mold opening and closing mold buffer mechanism according to claim 2, characterized in that: The right sides of the four guide blocks (11) are all fixedly connected with springs (12), and the right ends of the four springs (12) are all fixedly connected with the second mounting plate (2).

4. The injection mold opening and closing mold buffer mechanism according to claim 1, characterized in that: A rubber ring (13) is fixedly connected to the left side of the fixed mold (5).

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