Injection molding machine for sealing ring machining

Abstract

The utility model discloses an injection molding machine for processing a sealing ring, which relates to the technical field of sealing ring production, and comprises a bottom plate, four vertical frames are vertically arranged on the bottom plate, a servo motor is arranged on the outer side of the bottom plate, the output end of the servo motor is connected with a bidirectional lead screw, two sliding sleeves are symmetrically arranged on the bidirectional lead screw, and the two sliding sleeves are connected with the bottom plate. A first connecting rod and a second connecting rod are hinged to the front side and the rear side of each sliding sleeve respectively. According to the utility model, the servo motor is adopted to accurately drive the lower mold to perform lifting motion, so that efficient and accurate mold closing and opening operation is realized, on one hand, a traditional manual demolding mode is successfully replaced, and on the other hand, the design does not need to additionally arrange a special driving mechanism to realize a demolding function; the movement process that the servo motor drives the lower mold to ascend and descend and the cooperation of the fixing plate and the connecting rod mechanism are ingeniously utilized, and integrated linkage of the demolding action and the mold opening action is achieved.

Description

Technical Field

[0001] This utility model relates to the field of sealing ring production technology, specifically to an injection molding machine for processing sealing rings. Background Technology

[0002] A sealing ring is an accessory used to achieve a sealing function. It is usually made of elastic material. The sealing ring fills the sealing gap through its elastic deformation and performs good sealing performance within a certain pressure and temperature range. The sealing ring is mainly produced by injection molding molten plastic raw material into a mold.

[0003] Existing injection-molded sealing rings are difficult to remove from the mold due to their tight fit with the mold cavity and the slight deformation or adsorption forces that may occur during the cooling and solidification process. For example, in the rubber sealing ring injection molding mold disclosed in patent CN210061858U, although the design of the slider, push rod and pressure plate makes it easier to remove the sealing ring to some extent by pressing the pressure plate upward after injection molding, the push rod lifts the slider and thus lifts the injection molded part (sealing ring). However, pressing the pressure plate requires manual operation. This means that during the production process, after each injection molding, the operator needs to manually remove the sealing ring. However, it is difficult to ensure that the force applied when manually pressing the pressure plate is completely consistent each time. Excessive force may damage the sealing ring or the mold, while insufficient force may prevent successful demolding.

[0004] Therefore, it is necessary to invent an injection molding machine for processing sealing rings to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide an injection molding machine for processing sealing rings, which solves the problem that when operators manually remove sealing rings, it is difficult to ensure that the applied force is completely consistent each time. Excessive force may damage the sealing ring or the mold, while insufficient force may prevent successful demolding.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an injection molding machine for processing sealing rings, comprising a base plate, four vertically arranged supports on the base plate, a top plate fixedly connected to the top of the four supports, an upper mold fixedly installed on the bottom surface of the top plate, a lower mold that can be raised and lowered correspondingly arranged directly below the upper mold, a mold base fixedly connected to the bottom of the lower mold, four guide rods through the mold base, the upper end of the guide rods being fixed to the bottom surface of the top plate and the lower end being fixed to the top surface of the base plate, a servo motor arranged on the outer side of the base plate, a bidirectional lead screw connected to the output end of the servo motor, two sliding sleeves symmetrically arranged on the bidirectional lead screw, and connecting rod one and connecting rod two respectively hinged to the front and rear sides of each sliding sleeve.

[0007] Preferably, the top surface of the top plate is provided with an injection port, and the bottom surface of the upper mold is provided with drain ports at the positions corresponding to the four mold cavities. These drain ports are connected to the injection port on the top plate through internal channels.

[0008] Preferably, the mold base and the four guide rods are slidably connected, and the guide rods and the mold base are fitted with linear bearings.

[0009] Preferably, the lower mold has four mold cavities, and a fixing plate is provided below the mold base, and the fixing plate is fixedly installed on the upright frame.

[0010] Preferably, four sets of ejector pins are provided on the top surface of the fixing plate at the position corresponding to the mold cavity, and the four sets of ejector pins extend through the lower mold into the mold cavity.

[0011] Preferably, the two side walls of the mold base are provided with side plates, and the side plates are hinged to the connecting rod.

[0012] Preferably, the second connecting rod is located below the first connecting rod, and the two side walls of the base plate are provided with side plates, and the second connecting rod and the side plates are hinged together.

[0013] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0014] In this invention, a servo motor drives the lower mold to lift and lower, thus achieving mold closing and opening. When the lower mold descends and opens, the sliding sleeve drives connecting rod one and connecting rod two to move. Since the fixed plate is fixed, the ejector pin is fixed, while the lower mold continues to descend, causing the ejector pin to move upward relative to the lower mold. This relative movement directly acts on the already formed sealing ring in the mold cavity, and the ejector pin steadily pushes the sealing ring out of the mold cavity, successfully completing the demolding action.

[0015] In summary, this invention employs a servo motor to precisely drive the lower mold's lifting and lowering motion, thereby achieving efficient and precise mold closing and opening operations. On one hand, it successfully replaces the traditional manual demolding method, completely eliminating the problems of low efficiency, high labor intensity, and unstable demolding quality associated with manual operation. On the other hand, this design eliminates the need for a separate dedicated drive mechanism to achieve the demolding function. By cleverly utilizing the servo motor-driven lifting and lowering motion of the lower mold, along with the coordinated operation of the fixed plate and linkage mechanism, the demolding and opening actions are integrated and linked. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a three-dimensional structural diagram of the mold cavity and ejector pins of this utility model;

[0018] Figure 3 This is a top view of the mold cavity and ejector pin structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the three-dimensional structure of the bidirectional lead screw of this utility model;

[0020] Figure 5 This is an exploded three-dimensional structural diagram of connecting rod one and connecting rod two of this utility model.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Base plate; 2. Stand; 3. Top plate; 4. Injection port; 5. Upper mold; 6. Mold base; 7. Lower mold; 8. Mold cavity; 9. Fixing plate; 10. Ejector pin; 11. Servo motor; 12. Two-way lead screw; 13. Sliding sleeve; 14. Connecting rod one; 15. Side plate one; 16. Connecting rod two; 17. Side plate two; 18. Guide rod. Detailed Implementation

[0023] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0024] This utility model provides, for example Figure 1-5 The injection molding machine for processing sealing rings shown includes a base plate 1, four vertical supports 2 are vertically arranged on the base plate 1, and a top plate 3 is fixedly connected to the top of the four supports 2. An injection port 4 is opened on the top surface of the top plate 3. Drainage outlets are respectively provided on the bottom surface of the upper mold 5 at positions corresponding to the four mold cavities 8. These drainage outlets are connected to the injection ports 4 on the top plate 3 through internal channels. The upper mold 5 is fixedly installed on the bottom surface of the top plate 3, and a liftable lower mold 7 is correspondingly arranged directly below the upper mold 5. The bottom of the lower mold 7 is fixedly connected to... There is a mold base 6, on which four guide rods 18 are installed. The upper end of the guide rods 18 is fixed to the bottom surface of the top plate 3 and the lower end is fixed to the top surface of the base plate 1. The mold base 6 and the four guide rods 18 are slidably connected. The guide rods 18 and the mold base 6 are fitted with linear bearings. A servo motor 11 is installed on the outside of the base plate 1. The output end of the servo motor 11 is connected to a bidirectional lead screw 12. Two sliding sleeves 13 are symmetrically arranged on the bidirectional lead screw 12. The front and rear sides of each sliding sleeve 13 are respectively hinged to connecting rod 14 and connecting rod 2 16.

[0025] In this embodiment, the plastic raw material is smoothly transported from the injection molding machine to the mold cavity 8. Through the design of the internal channels and drain outlets, it is ensured that the plastic raw material can be injected into each mold cavity 8 evenly and accurately, improving injection molding efficiency and quality. The precise fit between the upper mold 5 and the lower mold 7 forms a closed mold cavity 8. Furthermore, the servo motor 11 can precisely drive the bidirectional lead screw 12 to rotate. Through the transmission of the sliding sleeve 13 and the linkage mechanism, the precise lifting and lowering movement of the mold base 6 and the lower mold 7 is realized, ensuring the smoothness and accuracy of the mold closing and opening process. The fixed plate 9 provides a stable mounting base for the ejector pin 10. Therefore, when the lower mold 7 descends to open the mold, the ejector pin 10 moves upward relative to the lower mold 7, pushing the molded sealing ring out of the mold cavity 8, realizing a reliable demolding function. This design eliminates the need for an additional drive mechanism, simplifies the equipment structure, reduces costs, and improves demolding efficiency and product quality.

[0026] The lower mold 7 has four mold cavities 8. A fixing plate 9 is provided below the mold base 6 and is fixedly installed on the stand 2. Four sets of ejector pins 10 are provided on the top surface of the fixing plate 9 at the positions corresponding to the mold cavities 8. The four sets of ejector pins 10 extend through the lower mold 7 into the mold cavity 8. Side plates 15 are provided on both sides of the mold base 6. Side plates 15 are hinged to connecting rods 14. Connecting rods 16 are located below connecting rods 14. Side plates 17 are provided on both sides of the bottom plate 1. Connecting rods 16 are hinged to side plates 17.

[0027] In this embodiment, the design of four mold cavities 8 can produce four sealing rings simultaneously, and four sets of ejector pins 10 can eject four sealing rings simultaneously, thus greatly improving production efficiency. When the servo motor 11 drives the bidirectional lead screw 12 to move the sliding sleeve 13, the connecting rod 14 transmits power to the mold base 6 through the side plate 15, pushing the mold base 6 and the lower mold 7 to rise and fall, realizing the mold closing and opening actions. This transmission method has a simple structure and high transmission efficiency, which can ensure the smoothness and accuracy of the movement of the lower mold 7. Therefore, the connecting rod 2 16 works in coordination with the connecting rod 14 to play an auxiliary support and guiding role, enhancing the stability and reliability of the entire transmission mechanism.

[0028] Working principle of this utility model:

[0029] Refer to the instruction manual appendix Figure 1-5When using this utility model, firstly, press the start button, and the servo motor 11 starts to work. Its output end drives the bidirectional lead screw 12 to rotate in the forward direction. As the bidirectional lead screw 12 rotates, the two sliding sleeves 13 symmetrically arranged on the bidirectional lead screw 12 move symmetrically along the axis of the bidirectional lead screw 12 under the action of the thread. When the sliding sleeves 13 move, they drive the connecting rod 14 and the connecting rod 2 16 to move. The connecting rod 14 transmits the power to the mold base 6 through the side plate 15, pushing the mold base 6 and the lower mold 7 to move upward along the guide rod 18. Under the precise guidance of the guide rod 18 and the mold base 6 using linear bearings, the lower mold 7 gradually and precisely closes with the upper mold 5 to form four closed mold cavities 8, preparing for injection molding. Then, the molten plastic material is injected through the injection port 4. The molten plastic material can flow smoothly and evenly into each mold cavity 8.

[0030] After the sealing rings are fully cured, the servo motor 11 drives the bidirectional lead screw 12 to rotate in the opposite direction. The bidirectional lead screw 12 rotates in the opposite direction, which drives the sliding sleeve 13 to move in the opposite direction. The sliding sleeve 13 moves in the opposite direction, which drives the connecting rod 14 and the connecting rod 26 to move in the opposite direction. The connecting rod 14 pulls the mold base 6 and the lower mold 7 downward along the guide rod 18 through the side plate 15, realizing the mold opening action. Since the fixed plate 9 is fixedly installed on the stand 2 and its position is fixed, during the descent of the lower mold 7, the four sets of ejector pins 10 fixed on the top surface of the fixed plate 9 and corresponding to the position of the mold cavity 8 move upward relative to the lower mold 7, pushing the four formed sealing rings out of the mold cavity 8 at the same time, completing the demolding.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An injection molding machine for processing sealing rings, comprising a base plate (1), characterized in that: Four uprights (2) are vertically arranged on the base plate (1). A top plate (3) is fixedly connected to the top of the four uprights (2). An upper mold (5) is fixedly installed on the bottom surface of the top plate (3). A lower mold (7) that can be raised and lowered is arranged directly below the upper mold (5). A mold base (6) is fixedly connected to the bottom of the lower mold (7). Four guide rods (18) are arranged through the mold base (6). The upper end of the guide rod (18) is fixed to the bottom surface of the top plate (3) and the lower end is fixed to the top surface of the base plate (1). A servo motor (11) is arranged on the outside of the base plate (1). A bidirectional lead screw (12) is connected to the output end of the servo motor (11). Two sliding sleeves (13) are symmetrically arranged on the bidirectional lead screw (12). A connecting rod one (14) and a connecting rod two (16) are respectively hinged to the front and rear sides of each sliding sleeve (13).

2. The injection molding machine for processing sealing rings according to claim 1, characterized in that: The top surface of the top plate (3) is provided with an injection port (4), and the bottom surface of the upper mold (5) is provided with a drain port at the position corresponding to the four mold cavities (8). These drain ports are connected to the injection port (4) on the top plate (3) through internal channels.

3. The injection molding machine for processing sealing rings according to claim 1, characterized in that: The mold base (6) is slidably connected to the four guide rods (18), and the guide rods (18) and the mold base (6) are fitted with linear bearings.

4. The injection molding machine for processing sealing rings according to claim 1, characterized in that: The lower mold (7) has four mold cavities (8), and a fixing plate (9) is provided below the mold base (6), and the fixing plate (9) is fixedly installed on the stand (2).

5. The injection molding machine for processing sealing rings according to claim 4, characterized in that: The top surface of the fixing plate (9) is provided with four sets of ejector pins (10) at the position corresponding to the mold cavity (8). The four sets of ejector pins (10) extend through the lower mold (7) into the mold cavity (8).

6. The injection molding machine for processing sealing rings according to claim 1, characterized in that: The mold base (6) has side plates (15) on both sides, and the side plates (15) are hinged to the connecting rod (14).

7. The injection molding machine for processing sealing rings according to claim 1, characterized in that: The second connecting rod (16) is located below the first connecting rod (14), and the two side walls of the base plate (1) are provided with the second side plate (17), and the second connecting rod (16) and the second side plate (17) are hinged together.

Images