Injection mold opening and closing mechanism

Abstract

The present application discloses an injection mold opening and closing mechanism, which belongs to the technical field of injection molds, and includes a support frame, a U-shaped platform is fixedly installed on the bottom wall of the support frame, a groove is arranged on the top of the U-shaped platform, a static mold is fixedly installed in the groove of the U-shaped platform, a hydraulic cylinder is fixedly installed on the top of the support frame, the piston rod of the hydraulic cylinder passes through the support frame and a lifting plate is fixedly installed on the bottom end, a movable mold is fixedly installed on the bottom end of the lifting plate, two symmetrically arranged springs are fixedly installed on the bottom end of the horizontal section of the U-shaped platform, a bearing plate is fixedly installed on the bottom ends of the two springs, two ejector pins are fixedly installed on the top end of the bearing plate, the ejector pins penetrate and slide with the U-shaped platform, and the ejector pins slide and penetrate with the static mold. The utility model has a synchronous structure for opening and closing molds and withdrawing materials, improves the efficiency of withdrawing materials, is more convenient and efficient, and is suitable for promotion.

Description

Technical Field

[0001] The present application relates to the technical field of injection molds, and more specifically, to an injection mold opening and closing mechanism. Background Art

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

[0003] Chinese Patent Publication No.: (CN218948367U) discloses a quick opening and closing mechanism for an injection mold, comprising a mechanism frame, a transverse adjustment plate, a longitudinal adjustment plate, a movable plate and a clamping plate, wherein the movable plate is arranged inside the mechanism frame, a bidirectional screw is rotatably installed inside the movable plate, and clamping rods are mounted on the outer walls on both sides of the bidirectional screw, the clamping plate is arranged below the clamping rod, a transverse driving groove and a longitudinal driving groove are respectively arranged at the bottom of the mechanism frame, a transverse screw is rotatably installed inside the transverse driving groove, the transverse adjustment plate is mounted on the outer wall of the transverse screw, the longitudinal screw is rotatably installed inside the longitudinal driving groove, and the longitudinal adjustment plate is mounted on the outer wall of the longitudinal screw.

[0004] There are still some shortcomings in the above-mentioned related technologies. For example, during the use of the injection mold, the molded plastic product is generally removed manually after the mold is opened, and the mold opening and closing and material return structures are independent of each other, resulting in insufficient material return efficiency. Therefore, in order to solve such problems, we propose an injection mold opening and closing mechanism. Utility Model Content

[0005] In order to solve the above problems, the present application provides an injection mold opening and closing mechanism, which adopts the following technical solutions:

[0006] The top end of the lifting plate is fixedly provided with a support plate, and the bottom end of the lifting plate is fixedly provided with a lifting plate, and the bottom end of the lifting plate is fixedly provided with a movable mold. The bottom end of the horizontal section of the U-shaped platform is fixedly provided with two symmetrically arranged springs, and the bottom ends of the two springs are jointly fixedly provided with a bearing plate, and the top end of the bearing plate is fixedly provided with two ejector pins, and the ejector pins penetrate and slide with the U-shaped platform, and the ejector pins slide and penetrate with the static mold, and two groups of limiting mechanisms are provided between the bearing plate and the U-shaped platform, and two support rods are fixedly provided at the bottom end of the lifting plate, and the support rods penetrate and slide with the U-shaped platform, and a support plate is fixedly provided between the bottom ends of the two support rods, and the support plate is arranged parallel to the bearing plate.

[0007] Preferably, the lifting plate and the movable mold are matched, and an injection channel is provided between the lifting plate and the movable mold.

[0008] Preferably, a plurality of limiting columns distributed in an array are fixedly mounted on the bottom end of the lifting plate, and a plurality of through holes distributed in an array are provided on the top end of the U-shaped platform.

[0009] Preferably, a shaft sleeve is fixedly installed in the through hole of the U-shaped platform, and the shaft sleeve is slidably connected to the limiting column.

[0010] Preferably, the limiting mechanism includes a limiting tube, which is fixedly mounted on the top of the supporting plate, the limiting tube and the spring are coaxially arranged, the limiting tube is slidably sleeved on a limiting rod, and the top of the limiting rod is fixedly connected to the bottom end of the horizontal section of the U-shaped platform.

[0011] In summary, this application includes the following beneficial technical effects:

[0012] Through the installation of the support frame, after the movable mold cooperates with the static mold to complete the injection molding of the plastic parts, the hydraulic cylinder drives the lifting plate and the movable mold to rise, and the support rod and the support plate rise synchronously. After the movable mold rises a certain distance, the support plate fits with the load-bearing plate and drives the load-bearing plate to rise. The two ejectors eject the plastic products in the static mold. The limit mechanism improves the stability of the ejector pin's rising process. The spring drives the ejector pin to reset during the mold closing process. It has a synchronous structure of mold opening and closing and material withdrawal, which improves the material withdrawal efficiency and is more convenient and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the structure of this application;

[0014] Figure 2 This is the installation structure diagram of the static mold of this application;

[0015] Figure 3 This is a diagram of the installation structure of the ejector pin of this application;

[0016] Figure 4 This is the installation structure diagram of the limit column of this application.

[0017] Description of the numbers in the figure:

[0018] 1. Support frame; 2. U-shaped table; 3. Static mold; 4. Hydraulic cylinder; 5. Lifting plate; 6. Moving mold; 7. Limiting column; 8. Bushing; 9. Spring; 10. Loading plate; 11. Ejector pin; 12. Limiting tube; 13. Limiting rod; 14. Support rod; 15. Support plate. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application; obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application without making creative work are within the scope of protection of the present application.

[0020] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0021] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0022] The following is combined with Figure 1-4 This application is described in further detail.

[0023] See also Figure 1-4An injection mold opening and closing mechanism includes a support frame 1, a U-shaped platform 2 is fixedly installed on the bottom wall of the support frame 1, which has a supporting function, a groove is arranged on the top of the U-shaped platform 2, a static mold 3 is fixedly installed in the groove of the U-shaped platform 2, a hydraulic cylinder 4 is fixedly installed on the top of the support frame 1, which has a driving function, a piston rod of the hydraulic cylinder 4 passes through the support frame 1 and a lifting plate 5 is fixedly installed on the bottom end, which has a supporting function, a movable mold 6 is fixedly installed on the bottom end of the lifting plate 5, the lifting plate 5 and the movable mold 6 are adapted to lift An injection channel is provided between the lowering plate 5 and the movable mold 6, which has an injection molding function. A plurality of limiting columns 7 distributed in an array are fixedly installed at the bottom end of the lifting plate 5. A plurality of through holes distributed in an array are provided at the top end of the U-shaped platform 2. A shaft sleeve 8 is fixedly installed in the through hole of the U-shaped platform 2. The shaft sleeve 8 is slidably connected with the limiting column 7. The shaft sleeve 8 cooperates with the limiting column 7 to improve the stability of the mold closing process. Two symmetrically arranged springs 9 are fixedly installed at the bottom end of the horizontal section of the U-shaped platform 2, which have a supporting function. The bottom end of the spring 9 is fixedly installed with a bearing plate 10, which has a supporting function. Two ejector pins 11 are fixedly installed on the top of the bearing plate 10. The ejector pins 11 are penetrated and slidably connected with the U-shaped platform 2. The ejector pins 11 are slidably and penetrated with the static mold 3, which has the function of ejecting the plastic product. Two sets of limiting mechanisms are arranged between the bearing plate 10 and the U-shaped platform 2. The limiting mechanism includes a limiting tube 12. The limiting tube 12 is fixedly installed on the top of the bearing plate 10. The limiting tube 12 is coaxially arranged with the spring 9. The limiting tube 12 is slidably sleeved with the limiting rod 13, and the top of the limiting rod 13 is fixedly connected to the bottom end of the horizontal section of the U-shaped platform 2. The limiting mechanism improves the stability of the ejection process of the ejection needle 11. Two supporting rods 14 are fixedly installed at the bottom end of the lifting plate 5. The supporting rods 14 penetrate and are slidably connected to the U-shaped platform 2, and have a supporting effect. A supporting plate 15 is fixedly installed between the bottom ends of the two supporting rods 14. The support plate 15 is arranged in parallel with the bearing plate 10, and has a supporting effect.

[0024] The implementation principle of the embodiment of the present application is: after the movable mold 6 cooperates with the static mold 3 to complete the injection molding of the plastic part, the hydraulic cylinder 4 drives the lifting plate 5 and the movable mold 6 to rise, and the support rod 14 and the support plate 15 rise synchronously. After the movable mold 6 rises a certain distance, the support plate 15 is attached to the supporting plate 10 and drives the supporting plate 10 to rise, and the two ejector pins 11 eject the plastic product in the static mold 3. The limiting mechanism improves the stability of the ejector pin 11 during the rising process, and the spring 9 has the function of driving the ejector pin 11 to reset.

[0025] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An injection mold opening and closing mechanism, comprising a support frame (1), characterized in that: A U-shaped platform (2) is fixedly mounted on the bottom wall of the support frame (1), a groove is provided at the top of the U-shaped platform (2), a static mold (3) is fixedly mounted in the groove of the U-shaped platform (2), a hydraulic cylinder (4) is fixedly mounted on the top of the support frame (1), a piston rod of the hydraulic cylinder (4) passes through the support frame (1) and a lifting plate (5) is fixedly mounted on the bottom end, a movable mold (6) is fixedly mounted on the bottom end of the lifting plate (5), two symmetrically arranged springs (9) are fixedly mounted on the bottom end of the horizontal section of the U-shaped platform (2), a bearing plate (10) is fixedly mounted on the bottom ends of the two springs (9), and the hydraulic cylinder (4) is fixedly mounted on the bottom ends of the two springs (9). Two ejector pins (11) are fixedly mounted on the top of the carrier plate (10), the ejector pins (11) are penetrated and slidably connected to the U-shaped platform (2), the ejector pins (11) are slidably and penetrated with the static mold (3), two groups of limit mechanisms are arranged between the carrier plate (10) and the U-shaped platform (2), two support rods (14) are fixedly mounted on the bottom end of the lifting plate (5), the support rods (14) are penetrated and slidably connected to the U-shaped platform (2), a support plate (15) is fixedly mounted between the bottom ends of the two support rods (14), and the support plate (15) is arranged parallel to the carrier plate (10).

2. The injection mold opening and closing mechanism according to claim 1, characterized in that: The lifting plate (5) and the movable mold (6) are matched with each other, and an injection channel is provided between the lifting plate (5) and the movable mold (6).

3. The injection mold opening and closing mechanism according to claim 1, characterized in that: A plurality of limiting columns (7) distributed in an array are fixedly mounted on the bottom end of the lifting plate (5), and a plurality of through holes distributed in an array are arranged on the top end of the U-shaped platform (2).

4. The injection mold opening and closing mechanism according to claim 3, characterized in that: A shaft sleeve (8) is fixedly installed in the through hole of the U-shaped platform (2), and the shaft sleeve (8) is slidably connected to the limiting column (7).

5. The injection mold opening and closing mechanism according to claim 1, characterized in that: The limiting mechanism comprises a limiting tube (12), the limiting tube (12) being fixedly mounted on the top end of the bearing plate (10), the limiting tube (12) being coaxially arranged with the spring (9), the limiting tube (12) being slidably sleeved on a limiting rod (13), the top end of the limiting rod (13) being fixedly connected to the bottom end of the horizontal section of the U-shaped platform (2).

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