Injection mold convenient to demold

Abstract

The utility model relates to the field of injection molds, in particular to an injection mold convenient to demold, which solves the problem that a driving mechanism needs to be arranged at the bottom of a working table to eject a workpiece in a lower mold, and comprises the working table, supporting legs are fixedly connected to the bottom of the working table, and a U-shaped frame is fixedly connected to the top of the working table. Two hydraulic rods are installed on the inner top wall of the U-shaped frame, right-angle plates are installed at the telescopic ends of the two hydraulic rods correspondingly, the faces, away from each other, of the two right-angle plates are slidably connected with the two side walls of the U-shaped frame correspondingly, and an upper mold is installed between the two right-angle plates. According to the utility model, through the cooperation of the ejection plate, the second connecting rod, the moving plate and the linkage mechanism, a workpiece in the lower mold can be automatically ejected out while the upper mold is driven to move upwards, so that the automatic demolding of the workpiece is realized, an independent driving mechanism is not needed, and the production cost is reduced. And the maintenance cost and the production cost can be effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to an injection mold which is easy to demould. Background Art

[0002] Plastic boxes are a common packaging and storage container, widely used in various fields such as food, medical, cosmetics, and electronic products. The following is some basic information and considerations about plastic boxes. Injection molds are required for the processing and molding of plastic boxes.

[0003] An injection mold that is easy to demold with publication number CN216506593U includes a workbench, a U-shaped plate is installed on the upper end of the workbench and an electric telescopic rod is installed in the U-shaped cavity of the U-shaped plate, a sealing cover is fixed to the lower end of the electric telescopic rod and an injection hole is provided on the sealing cover, an injection mold is installed on the workbench, a demolding drive component is installed on the lower end of the workbench and the demolding drive component is threadedly connected to the demolding plate, and the upper end of the demolding plate is slidably arranged in the injection cavity of the injection mold.

[0004] Although the above device can automatically demould the workpiece, it is necessary to set a driving mechanism at the bottom of the workbench to eject the workpiece in the lower mold, which will not only increase the subsequent maintenance cost, but also increase the production cost. Utility Model Content

[0005] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides an injection mold that is easy to demould, so as to solve the problem that a driving mechanism needs to be provided at the bottom of the workbench to eject the workpiece in the lower mold.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] The invention relates to an injection mold for facilitating demoulding, comprising a workbench, wherein the bottom of the workbench is fixedly connected to a supporting leg, the top of the workbench is fixedly connected to a U-shaped frame, the inner top wall of the U-shaped frame is equipped with two hydraulic rods, the telescopic ends of the two hydraulic rods are equipped with right-angle plates, the sides of the two right-angle plates away from each other are respectively slidably connected to the two side walls of the U-shaped frame, an upper mold is installed between the two right-angle plates, a lower mold corresponding to the upper mold is installed on the top of the workbench, an ejection plate is slidably installed inside the lower mold, the bottom surface of the ejection plate is fixedly connected to a second connecting rod, a movable plate is arranged below the workbench, the end of the second connecting rod away from the ejection plate passes through the lower mold and the workbench in sequence and is fixedly connected to the movable plate, and a linkage mechanism is arranged below the two right-angle plates.

[0008] Preferably, four counterweights are installed on the bottom surface of the movable plate, and the four counterweights are respectively located at four corners of the movable plate.

[0009] Preferably, the linkage mechanism includes an I-shaped plate located below the movable plate, a through groove for the I-shaped plate to pass through is opened inside the movable plate, a first connecting rod is fixedly connected to a side of the I-shaped plate close to the movable plate, and an end of the first connecting rod away from the I-shaped plate passes through the through groove and the workbench in sequence and is fixedly connected to the right-angle plate.

[0010] Preferably, two rotating shafts are rotatably installed inside the I-shaped plate, and the outer surfaces of the two rotating shafts are fixedly connected with circular rings. One side of each circular ring is fixedly connected with a torsion spring, and one end of the torsion spring away from the circular ring is fixedly connected to the I-shaped plate.

[0011] Preferably, the outer surfaces of the two rotating shafts are both sleeved with a sleeve, and the inner wall of the sleeve is fixedly connected to the outer surface of the ring, and the outer surfaces of the two sleeves are both fixedly connected to a rotating plate.

[0012] Preferably, a baffle is fixedly connected above the I-shaped plate, and the baffle is located below the two rotating plates.

[0013] The beneficial effects of the utility model are:

[0014] 1. The utility model can automatically eject the workpiece inside the lower mold while driving the upper mold to move upward through the cooperation between the ejection plate, the second connecting rod, the moving plate and the linkage mechanism, thereby not only realizing the automatic demoulding of the workpiece, but also eliminating the need to set up a separate driving mechanism, thereby effectively reducing maintenance costs and production costs.

[0015] 2. The utility model can greatly increase the deadweight of the movable plate by arranging a counterweight block, thereby ensuring the stability of the movable plate and the ejector plate during the workpiece forming process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 2 It is a front view of the utility model;

[0018] Figure 3 This is a schematic diagram of the connection between the upper mold and the right-angle plate of the utility model;

[0019] Figure 4 It is a schematic diagram of the connection between the lower mold and the ejector plate of the utility model;

[0020] Figure 5 This is a schematic diagram of the three-dimensional structure of the linkage mechanism of the utility model in which the first connecting rod is hidden;

[0021] Figure 6 This is a schematic diagram of the connection between the I-shaped plate and the rotating shaft of the utility model;

[0022] Figure 7 It is a three-dimensional structural schematic diagram of the circular ring, sleeve and rotating plate of the utility model.

[0023] In the figure: 1. workbench; 2. U-shaped frame; 3. upper mold; 4. lower mold; 5. right-angle plate; 6. hydraulic rod; 7. linkage mechanism; 701. first connecting rod; 702. I-shaped plate; 703. rotating shaft; 704. circular ring; 705. torsion spring; 706. sleeve; 707. rotating plate; 708. baffle; 8. counterweight block; 9. ejector plate; 10. second connecting rod; 11. movable plate. DETAILED DESCRIPTION

[0024] The following will describe various embodiments of the present invention in detail with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0025] An injection mold that is easy to demould, as shown in the attached Figure 1-7 As shown, it includes a workbench 1, the bottom of the workbench 1 is fixedly connected with a supporting leg, the top of the workbench 1 is fixedly connected with a U-shaped frame 2, two hydraulic rods 6 are installed on the inner top wall of the U-shaped frame 2, and the telescopic ends of the two hydraulic rods 6 are installed with right-angle plates 5, and the sides of the two right-angle plates 5 that are away from each other are respectively slidably connected to the two side walls of the U-shaped frame 2, and an upper mold 3 is installed between the two right-angle plates 5, and a lower mold 4 corresponding to the upper mold 3 is installed on the top of the workbench 1, and an ejector plate 9 is slidably installed inside the lower mold 4, and the bottom surface of the ejector plate 9 is fixedly connected with a second connecting rod 10, and a movable plate 11 is arranged below the workbench 1. The end of the second connecting rod 10 away from the ejection plate 9 passes through the lower mold 4 and the workbench 1 in sequence and is fixedly connected to the movable plate 11; there are four supporting legs, and the four supporting legs are respectively located at the four corners of the workbench 1, and sliders are provided on the sides of the two right-angle plates 5 away from each other, and a slide groove adapted to the slider is provided inside the U-shaped frame 2, and an injection port is provided on the top of the upper mold 3. After driving the upper mold 3 and the lower mold 4 to close the mold, the raw material can be added into the cavity formed by the upper mold 3 and the lower mold 4 from the injection port, and a first through hole adapted to the first connecting rod 701 is provided inside the lower mold 4 and the workbench 1.

[0026] Four counterweights 8 are installed on the bottom surface of the movable plate 11, and the four counterweights 8 are respectively located at the four corners of the movable plate 11; by setting the counterweights 8, the deadweight of the movable plate 11 can be greatly increased, thereby ensuring the stability of the movable plate 11 and the ejection plate 9 during the workpiece forming process.

[0027] A linkage mechanism 7 is provided below the two right-angle plates 5, and the linkage mechanism 7 includes an I-shaped plate 702 located below the movable plate 11, and a through groove is provided inside the movable plate 11 for the I-shaped plate 702 to pass through, and a first connecting rod 701 is fixedly connected to a side of the I-shaped plate 702 close to the movable plate 11, and an end of the first connecting rod 701 away from the I-shaped plate 702 passes through the through groove and the workbench 1 in sequence and is fixedly connected to the right-angle plate 5; a second through hole adapted to the first connecting rod 701 is provided inside the workbench 1.

[0028] The I-shaped plate 702 is internally rotatably installed with two rotating shafts 703, and the outer surfaces of the two rotating shafts 703 are fixedly connected with circular rings 704, and one side of each circular ring 704 is fixedly connected with a torsion spring 705, and the end of the torsion spring 705 away from the circular ring 704 is fixedly connected to the I-shaped plate 702; when the circular ring 704 rotates, it can drive the rotating shaft 703 to rotate accordingly and the torsion spring 705 to deform.

[0029] The outer surfaces of the two rotating shafts 703 are both sleeved with sleeves 706, and the inner walls of the sleeves 706 are fixedly connected to the outer surface of the ring 704. The outer surfaces of the two sleeves 706 are both fixedly connected with rotating plates 707. The rotation of the rotating plates 707 can drive the sleeves 706 and the ring 704 to rotate accordingly. The distance between the two sides of the rotating plates 707 that are away from each other is greater than the length of the through groove.

[0030] A baffle 708 is fixedly connected above the I-shaped plate 702 . The baffle 708 is located below the two rotating plates 707 . The baffle 708 can block the two rotating plates 707 to prevent the two rotating plates 707 from rotating downward.

[0031] Working principle: When processing the plastic box, first start the hydraulic rod 6, so that the hydraulic rod 6 drives the right-angle plate 5 and the upper mold 3 to move downward. The movement of the right-angle plate 5 can drive the linkage mechanism 7 to move accordingly. When the rotating plate 707 moves downward and contacts the upper surface of the movable plate 11, continue to control the right-angle plate 5 to move downward to drive the two rotating plates 707 to rotate upward. When the two rotating plates 707 rotate upward to pass through the through slot, the I-shaped plate 702 and the rotating plate 707 will pass through the through slot and continue to move downward. At this time, the two rotating plates 707 will automatically reset under the action of the torsion spring 705. When the upper mold 3 moves to fit with the lower mold 4, the hydraulic rod 6 is closed, and the plastic box can be injection molded at this time. After the plastic box is formed, the hydraulic rod 6 is started again, so that the hydraulic rod 6 drives the right-angle plate 5 and the upper mold 3 to move upward. Then, when the two rotating plates 707 move to contact the bottom surface of the movable plate 11, the baffle 708 will block the two rotating plates 707, thereby continuing to control the right-angle plate 5 to move upward, which can drive the movable plate 11 and the ejector plate 9 to move upward. The ejector plate 9 moves upward to eject the workpiece inside the lower mold 4, thereby facilitating demolding of the workpiece.

[0032] It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0033] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it 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 those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0034] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. An injection mold for easy demoulding, comprising a workbench (1), characterized in that: The bottom of the workbench (1) is fixedly connected to a supporting leg, the top of the workbench (1) is fixedly connected to a U-shaped frame (2), the inner top wall of the U-shaped frame (2) is equipped with two hydraulic rods (6), the telescopic ends of the two hydraulic rods (6) are both equipped with right-angle plates (5), the sides of the two right-angle plates (5) away from each other are respectively slidably connected to the two side walls of the U-shaped frame (2), an upper mold (3) is installed between the two right-angle plates (5), a lower mold (4) corresponding to the upper mold (3) is installed on the top of the workbench (1), an ejection plate (9) is slidably installed inside the lower mold (4), the bottom surface of the ejection plate (9) is fixedly connected to a second connecting rod (10), a movable plate (11) is arranged below the workbench (1), the end of the second connecting rod (10) away from the ejection plate (9) passes through the lower mold (4) and the workbench (1) in sequence and is fixedly connected to the movable plate (11), and a linkage mechanism (7) is arranged below the two right-angle plates (5).

2. The injection mold for easy demoulding according to claim 1, characterized in that: Four counterweight blocks (8) are installed on the bottom surface of the movable plate (11), and the four counterweight blocks (8) are respectively located at the four corners of the movable plate (11).

3. The injection mold for easy demoulding according to claim 1, characterized in that: The linkage mechanism (7) comprises an I-shaped plate (702) located below the movable plate (11); a through slot is provided inside the movable plate (11) for the I-shaped plate (702) to pass through; a first connecting rod (701) is fixedly connected to a surface of the I-shaped plate (702) close to the movable plate (11); an end of the first connecting rod (701) away from the I-shaped plate (702) passes through the through slot and the workbench (1) in sequence and is fixedly connected to the right-angle plate (5).

4. The injection mold for easy demoulding according to claim 3, characterized in that: Two rotating shafts (703) are rotatably mounted inside the I-shaped plate (702); the outer surfaces of the two rotating shafts (703) are fixedly connected to circular rings (704); one side of each circular ring (704) is fixedly connected to a torsion spring (705); and one end of the torsion spring (705) away from the circular ring (704) is fixedly connected to the I-shaped plate (702).

5. The injection mold for easy demoulding according to claim 4, characterized in that: The outer surfaces of the two rotating shafts (703) are both sleeved with sleeves (706), and the inner walls of the sleeves (706) are fixedly connected to the outer surface of the ring (704), and the outer surfaces of the two sleeves (706) are both fixedly connected to rotating plates (707).

6. The injection mold for easy demoulding according to claim 5, characterized in that: A baffle (708) is fixedly connected above the I-shaped plate (702), and the baffle (708) is located below the two rotating plates (707).

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