Secondary ejection mechanism for demolding

Abstract

The utility model discloses a secondary ejection mechanism for demoulding, which relates to the technical field of demoulding and comprises a supporting block, a lower mould is mounted at the upper end of the supporting block, an injection molding groove is formed in the upper end of the lower mould, and a movable plate is jointly and movably connected to the lower portion of the left inner wall and the lower portion of the right inner wall of the supporting block. Baffles are installed in the middle of the left inner wall and the middle of the right inner wall of the supporting block, rectangular grooves are formed in the left portion and the right portion of the upper end of the moving plate, ejection components are arranged in the two rectangular grooves, and two second ejection rods distributed in a bilateral symmetry mode are installed at the upper end of the moving plate. And circular grooves are formed in the upper ends of the two second ejector rods correspondingly, and a movable plate is arranged at the upper end of the movable plate. According to the utility model, the baffle plate, the ejection component and the first ejection rod are matched together to carry out secondary ejection on a product, and secondary demolding by a worker is not needed, so that the labor amount of the worker is reduced, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mold demoulding, in particular to a secondary ejection mechanism for demoulding. Background Art

[0002] Demolding refers to the process in which the injection molded parts rely on external force to overcome the adhesion and adsorption force of the product on the mold. Generally, the finished product is taken out of the mold, whether it is a single ejection mechanism or a multi-component ejection mechanism, and the ejection action is completed in one go.

[0003] The prior art (Announcement No.: CN 217226524 U) discloses a separation ejection mechanism for a mold, comprising a bottom plate, a frame welded on the bottom plate, a mold welded on the frame, a screw rotatably connected in the frame, a square hole is provided in the screw, a square rod is slidably connected in the square hole, a turntable is welded on the square rod, the turntable is in contact with the frame, a latch is welded on the turntable, a socket is provided on the frame, the latch is slidably connected in the socket, an inclined block is threadedly connected to the outer side of the screw, and the inclined block is in contact with the bottom plate.

[0004] Although the above patent sets structures such as a screw, an inclined block, an ejector block, a slide cylinder, a slide plate, a spring, an ejector rod, and an ejector plate, the screw rotates and the inclined block performs threaded motion, so that the ejector block moves upward, and the spring in the slide cylinder elastically presses the ejector rod upward, thereby elastically ejecting the product in the mold to avoid damage to the product caused by hard ejection, but there are the following disadvantages: some finished products have a special bottom shape that extends into the ejector pin. If it is detached from the injection groove in time after one ejection, it will still be stuck on the ejector pin, resulting in the product being unable to be ejected normally. Workers are required to remove the product, which increases the workload of workers and affects work efficiency. For this reason, we propose a secondary ejection mechanism for demolding. Utility Model Content

[0005] The main purpose of the utility model is to provide a secondary ejection mechanism for demoulding, which can effectively solve the problems in the background technology.

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

[0007] A secondary ejection mechanism for demoulding comprises a support block, a lower mold is installed on the upper end of the support block, an injection groove is opened on the upper end of the lower mold, a movable plate is movably connected to the lower left inner wall and the lower right inner wall of the support block, baffles are installed in the middle of the left inner wall and the middle of the right inner wall of the support block, rectangular grooves are opened on the upper left and upper right parts of the movable plate, ejection components are arranged in the two rectangular grooves, two left-right symmetrically distributed second ejector rods are installed on the upper end of the movable plate, circular grooves are opened on the upper ends of the two second ejector rods, a movable plate is arranged on the upper end of the movable plate, and a plurality of first ejector rods are installed on the upper end of the movable plate.

[0008] Preferably, the ejection component includes a box body, which is installed in a rectangular groove, and the upper inner wall, front inner wall and rear inner wall of the box body are jointly installed with a partition, the left inner wall and the right inner wall of the box body are slidably connected with slides, and the ends of the two slides close to each other are respectively slidably connected to the left end and the right end of the partition, and the upper ends of the two slides are installed with a plurality of springs, and the upper ends of the plurality of springs are fixedly connected to the upper wall of the box body, and movable rods are installed in the middle of the upper ends of the two slides, and the upper ends of the two movable rods are movably inserted to the upper side of the box body.

[0009] Preferably, the internal thread sleeve of the movable rod is provided with a screw rod, the screw rod extends to the upper side of the movable rod, and a knob is installed on the upper end of the screw rod.

[0010] Preferably, the upper ends of a plurality of the first push rods are movably inserted into the injection molding groove, and the upper end of the second push rod movably passes through the upper end of the movable plate and extends into the injection molding groove.

[0011] Preferably, a U-shaped plate is installed at the lower end of the support block, a hydraulic cylinder is installed on the lower inner wall of the U-shaped plate, and an output end of the hydraulic cylinder extends into the support block and is fixedly connected to the lower end of the movable plate.

[0012] Preferably, the baffle plate and the movable plate are respectively located above the two movable rods.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. The baffle plate, the ejection component and the first ejector rod cooperate to eject the product for the second time. When the movable plate moves upward, the first ejector rod and the second ejector rod are driven to move upward, so that the product is separated from the injection molding groove. When the movable rod on one side contacts the lower end of the baffle plate, the movable rod on one side drives the slide plate on one side to move downward, pushing the hydraulic oil to the other side. The hydraulic oil pushes the slide plate and the movable rod on the other side to move upward, pushing the movable plate and the first ejector rod upward, thereby ejecting the product for the second time, so that the lower end of the product is away from the circular groove, and the product can be completely removed without the need for workers to perform secondary demolding, thereby reducing the workload of workers and improving work efficiency.

[0015] 2. The height of the movable rod can be adjusted by setting the screw and the knob to cooperate with each other. When the secondary ejection fails to completely eject the product from the circular groove, the knob is turned to drive the screw to move upward, so that the movable rod contacts the baffle and the movable plate in advance, thereby increasing the upward movement distance of the first ejector rod, so that the product can be completely ejected from the circular groove, further improving the ejection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the entire structure proposed in this embodiment;

[0017] Figure 2 It is a schematic cross-sectional structural diagram in this embodiment;

[0018] Figure 3 Schematic diagram of the structure of the ejection component in this embodiment;

[0019] Figure 4 Schematic diagram of the structure of the movable rod in this embodiment.

[0020] In the figure: 1. U-shaped plate; 2. hydraulic cylinder; 3. support block; 4. lower mold; 5. injection groove; 6. movable plate; 7. rectangular groove; 8. ejector component; 9. baffle; 10. movable plate; 11. first ejector rod; 12. second ejector rod; 13. circular groove; 81. box body; 82. partition; 83. slide plate; 84. spring; 85. movable rod; 851. screw rod; 852. knob. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0022] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" 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 invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "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 an indirect connection 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 the present invention can be understood according to specific circumstances.

[0024] like Figure 1-Figure 4 As shown, a secondary ejection mechanism for demoulding comprises a support block 3, a lower mold 4 is installed on the upper end of the support block 3, an injection groove 5 is opened on the upper end of the lower mold 4, a movable plate 6 is movably connected to the lower left inner wall and the lower right inner wall of the support block 3, a baffle 9 is installed in the middle of the left inner wall and the middle of the right inner wall of the support block 3, a rectangular groove 7 is opened on the upper left and upper right parts of the movable plate 6, and an ejection component 8 is arranged in each of the two rectangular grooves 7, and two left-right symmetrically distributed second ejector rods 12 are installed on the upper end of the movable plate 6, and a circular groove 13 is opened on the upper end of the two second ejector rods 12, and a movable plate 10 is arranged on the upper end of the movable plate 6, and the movable plate 10 is a convex structure, and a plurality of first ejector rods 11 are installed on the upper end of the movable plate 10, and the product can be ejected for a second time by the cooperation of the baffle 9, the ejection component 8 and the first ejector rod 11, without the need for workers to perform secondary demoulding, thereby reducing the labor of workers and improving work efficiency.

[0025] The ejection component 8 includes a box body 81, which is installed in the rectangular groove 7. The upper inner wall, front inner wall and rear inner wall of the box body 81 are jointly installed with a partition 82. The left inner wall and the right inner wall of the box body 81 are slidably connected with a slide plate 83. The ends of the two slide plates 83 close to each other are slidably connected with the left and right ends of the partition plate 82 respectively. The upper ends of the two slide plates 83 are installed with a plurality of springs 84, and the upper ends of the plurality of springs 84 are fixedly connected to the upper wall of the box body 81. The middle parts of the upper ends of the two slide plates 83 are installed with movable rods 85, and the upper ends of the two movable rods 85 are movably inserted into the upper side of the box body 81. Hydraulic oil is arranged in the box body 81, and the hydraulic oil is located below the slide plate 83. The partition plate 82 is used to divide the box body 81 into two chambers to facilitate the left and right flow of hydraulic oil. The spring 84 is used to drive the slide plate 83 to reset. When the movable plate 6 moves downward, the springs 84 on the left and right sides are no longer compressed and stretched, and the spring 84 drives the slide plate 83 to reset by its own elastic force.

[0026] In order to adjust the height of the movable rod 85 so that the movable rod 85 contacts the baffle 9 and the movable plate 10 in advance, thereby increasing the upward moving distance of the first ejector rod 11, so that the product can be completely ejected from the circular groove 13, thereby further improving the ejection effect, the internal threaded sleeve of the movable rod 85 is provided with a screw 851, which extends to the upper side of the movable rod 85, and a knob 852 is installed at the upper end of the screw 851.

[0027] The upper ends of the plurality of first push rods 11 are movably inserted into the injection molding groove 5 , and the upper ends of the second push rods 12 are movably penetrated through the upper end of the movable plate 10 and extend into the injection molding groove 5 .

[0028] A U-shaped plate 1 is installed at the lower end of the support block 3, and a hydraulic cylinder 2 is installed on the lower inner wall of the U-shaped plate 1. The output end of the hydraulic cylinder 2 extends into the support block 3 and is fixedly connected to the lower end of the movable plate 6. The hydraulic cylinder 2 is used to drive the movable plate 6 to move up and down.

[0029] The baffle plate 9 and the movable plate 10 are respectively located above the two movable rods 85 , and the two middle movable rods 85 are located below the left upper wall and the right upper wall of the movable plate 10 .

[0030] The utility model proposes a secondary ejection mechanism for demoulding. When in use, the upper mold is installed above the lower mold 4 for injection molding. After the injection molding is completed, the upper mold is controlled to move away from the lower mold 4, and the output end of the hydraulic cylinder 2 is controlled to drive the movable plate 6 to move upward. When the movable plate 6 moves upward, it drives the first ejector rod 11 and the second ejector rod 12 to move upward, so that the product is separated from the injection groove 5. When the movable rods 85 on the left and right sides are in contact with the lower ends of the two baffles 9 respectively, the movable rods 85 on the left and right sides respectively drive the slide plates 83 on the left and right sides to move downward, pushing the hydraulic oil to the other side, and the hydraulic oil on both sides respectively push the two middle slide plates 83 and the two movable rods 85 to move upward, pushing the movable The plate 10 and several first ejector rods 11 continue to move upward, thereby performing secondary ejection of the product, so that the lower end of the product is away from the circular groove 13, and the product can be completely removed without the need for workers to perform secondary demolding. When the secondary ejection cannot completely eject the product from the circular groove 13, the knob 852 is turned to drive the screw 851 to move upward, so that the movable rod 85 contacts the baffle 9 and the movable plate 10 in advance through the knob 852 and the screw 851, thereby increasing the upward movement distance of the first ejector rod 11, so that the product can be completely ejected from the circular groove 13. After the ejection is completed, the hydraulic cylinder 2 drives the movable plate 6 and the second ejector rod 12 to reset, and the movable plate 10 and the first ejector rod 11 move downward and reset under gravity.

[0031] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A secondary ejection mechanism for demoulding, comprising a support block (3), characterized in that: A lower mold (4) is installed at the upper end of the support block (3), and an injection molding groove (5) is provided at the upper end of the lower mold (4). The lower part of the left inner wall and the lower part of the right inner wall of the support block (3) are movably connected to a movable plate (6). The middle part of the left inner wall and the middle part of the right inner wall of the support block (3) are both installed with baffles (9). The upper left part and the upper right part of the movable plate (6) are both provided with rectangular grooves (7), and ejection components (8) are provided in the two rectangular grooves (7). The upper end of the movable plate (6) is provided with two second ejector rods (12) symmetrically distributed on the left and right sides, and the upper ends of the two second ejector rods (12) are both provided with circular grooves (13). The upper end of the movable plate (6) is provided with a movable plate (10), and the upper end of the movable plate (10) is provided with a plurality of first ejector rods (11).

2. A secondary ejection mechanism for demoulding according to claim 1, characterized in that: The ejection component (8) comprises a box body (81), the box body (81) is installed in the rectangular groove (7), the upper inner wall, the front inner wall and the rear inner wall of the box body (81) are jointly installed with a partition (82), the left inner wall and the right inner wall of the box body (81) are slidably connected with a slide plate (83), the ends of the two slide plates (83) close to each other are slidably connected with the left end and the right end of the partition plate (82) respectively, the upper ends of the two slide plates (83) are installed with a plurality of springs (84), the upper ends of the plurality of springs (84) are fixedly connected with the upper wall of the box body (81), the middle parts of the upper ends of the two slide plates (83) are installed with movable rods (85), and the upper ends of the two movable rods (85) are movably inserted into the upper side of the box body (81).

3. A secondary ejection mechanism for demoulding according to claim 2, characterized in that: The internal thread sleeve of the movable rod (85) is provided with a screw rod (851), the screw rod (851) extends to the upper side of the movable rod (85), and a knob (852) is installed at the upper end of the screw rod (851).

4. A secondary ejection mechanism for demoulding according to claim 1, characterized in that: The upper ends of a plurality of the first push rods (11) are movably inserted into the injection molding groove (5), and the upper end of the second push rod (12) is movably penetrated through the upper end of the movable plate (10) and extends into the injection molding groove (5).

5. A secondary ejection mechanism for demoulding according to claim 1, characterized in that: A U-shaped plate (1) is mounted at the lower end of the support block (3), a hydraulic cylinder (2) is mounted on the lower inner wall of the U-shaped plate (1), and an output end of the hydraulic cylinder (2) extends into the support block (3) and is fixedly connected to the lower end of the movable plate (6).

6. A secondary ejection mechanism for demoulding according to claim 2, characterized in that: The baffle plate (9) and the movable plate (10) are respectively located above the two movable rods (85).

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