Automatic ejection device for molding of rubber-coated part

Abstract

The utility model discloses an automatic ejection device for molding a rubber coating piece, which comprises an injection molding movable mold and an injection molding fixed mold, the injection molding movable mold is arranged on a hydraulic component, the upper surface of the injection molding fixed mold is provided with a bearing groove for bearing a metal piece, movable rods are symmetrically and movably arranged on two sides of the injection molding movable mold, and the movable rods are arranged on the upper surface of the injection molding fixed mold. An ejector rod is fixedly mounted between the bottoms of the two movable rods, after rubber coating injection molding is completed, the ejector rod indirectly mounted on the injection movable mold is driven to slide out of the containing groove by controlling the injection movable mold to ascend, the ejector rod can eject a rubber coating part on the injection fixed mold, and discharging of the rubber coating part is facilitated; the sliding block is pushed by the second reset spring to drive the sliding block to slide reversely in the sliding groove, the rotating rod connected with the movable rod in a sliding mode is driven to rotate, the ejector rods connected with the connecting rod are driven to ascend relative to the horizontal height, and the rubber coating pieces located on the two ejector rods are discharged.

Description

Technical Field

[0001] This utility model relates to the field of overmolding process technology, specifically to an automatic ejection device for overmolded parts. Background Technology

[0002] Overmolded parts are workpieces in which TPE is directly injection molded onto the metal surface, bonding the TPE to the metal. During overmolding, the metal surface is first cleaned, then an adhesive is applied to it. After the adhesive dries, the metal part is fixed into the mold, and the TPE is injection molded onto the metal surface, completing the bonding and overmolding process. This method is widely used.

[0003] In the existing technology, when using a mold to complete the coating of metal parts, the coated parts are completely contained in the mold. When removing the coated parts from the mold, tools are needed to pry them out, which is a cumbersome process. At the same time, it is inconvenient to unload the coated parts, and manual unloading of the coated parts that have been removed from the mold is also required, making the overall process quite cumbersome. Utility Model Content

[0004] The purpose of this invention is to provide an automatic ejection device for molding overmolded parts, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an automatic ejection device for molding overmolded parts, comprising a moving injection mold and a fixed injection mold, wherein the moving injection mold is mounted on a hydraulic assembly, the upper surface of the fixed injection mold is provided with a bearing groove for supporting metal parts, movable rods are symmetrically and movably mounted on both sides of the moving injection mold, an ejector rod is fixedly mounted between the bottoms of the two movable rods, and a receiving groove for receiving the ejector rod is provided in the middle of the fixed injection mold, wherein one of the movable rods is rotatable.

[0006] As a further preferred embodiment of this technical solution, fixed blocks are symmetrically fixedly installed on both sides of the injection molding moving mold, and a first sliding hole is opened at the end of the fixed block. One of the movable rods is slidably installed inside the first sliding hole. Rotating rods are symmetrically rotatedly installed on both sides of the injection molding moving mold, and a second sliding hole is opened at the end of the rotating rod. Another movable rod is slidably installed inside the second sliding hole. A first return spring is sleeved on the outer side of the top of the movable rod. The top of the first return spring is fixedly connected to the top of the movable rod, and the bottom of the first return spring is fixedly connected to the fixed block or the rotating rod.

[0007] As a further preferred embodiment of this technical solution, a connecting rod is rotatably mounted at the bottom end of the movable rod installed on the rotating rod, and the end of the connecting rod away from the movable rod is movably mounted on one side of the injection mold.

[0008] As a further preferred embodiment of this technical solution, the injection mold has symmetrical grooves on both sides, and a slider is slidably installed inside the groove. The end of the connecting rod away from the movable rod is rotatably installed on one side of the slider.

[0009] As a further preferred embodiment of this technical solution, a through hole is provided in the middle of the slider, and a fixing rod is fixedly installed in the injection mold at the position corresponding to the through hole. The fixing rod is slidably connected to the through hole, and a second return spring is sleeved on the outer side of one end of the fixing rod. One end of the second return spring is fixedly connected to one end of the slider, and the other end of the second return spring is fixedly connected to the end of the injection mold corresponding to the slide groove.

[0010] As a further preferred embodiment of this technical solution, a torsion spring is sleeved on the outer side of the rotating rod, one end of the torsion spring is fixedly connected to one side of the injection mold, and the other end of the torsion spring is fixedly connected to the middle of the rotating rod.

[0011] This utility model provides an automatic ejection device for molding overmolded parts, which has the following advantages:

[0012] (1) This utility model places the metal part inside the bearing groove on the injection mold. After the overmolding is completed, the moving mold is raised by controlling the moving mold to move away from the injection mold until the first return spring is in normal state. Then the moving mold is raised continuously, which will cause the ejector rod indirectly installed on the moving mold to slide out of the receiving groove. During this process, the ejector rod can eject the overmolded part on the injection mold, which is convenient for the overmolded part to be discharged.

[0013] (2) When the injection molding moving mold rises, the ejector rod will pull the connecting rod, which will drive the slider to slide inside the slide groove. At this time, the second return spring is in a compressed state. When the ejector rod slides out of the receiving groove, the second return spring will push the slider to slide in the opposite direction inside the slide groove, which will drive the rotating rod that is slidably connected to this moving rod to rotate, which will drive the ejector rod connected to the connecting rod to rise in relative horizontal height, and unload the rubber-coated parts on the two ejector rods. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the overall exploded structure of this utility model;

[0016] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0017] Figure 4 for Figure 2 Enlarged view of point B in the middle;

[0018] In the diagram: 1. Injection moving mold; 2. Injection fixed mold; 3. Bearing groove; 4. Movable rod; 5. Ejector rod; 6. Storage groove; 7. Fixing block; 8. First sliding hole; 9. Rotating rod; 10. Second sliding hole; 11. First return spring; 12. Connecting rod; 13. Slide groove; 14. Slider; 15. Through hole; 16. Fixing rod; 17. Second return spring; 18. Torsion spring. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0020] This utility model provides a technical solution: such as Figures 1 to 4 As shown in this embodiment, an automatic ejection device for molding overmolded parts includes a moving injection mold 1 and a fixed injection mold 2. The moving injection mold 1 is mounted on a hydraulic assembly. The upper surface of the fixed injection mold 2 is provided with a support groove 3 for supporting metal parts. Movable rods 4 are symmetrically and movably mounted on both sides of the moving injection mold 1. An ejector rod 5 is fixedly mounted between the bottoms of the two movable rods 4. A receiving groove 6 for receiving the ejector rod 5 is provided in the middle of the fixed injection mold 2. One of the movable rods 4 is rotatable. After the overmolded part is molded, by controlling the moving injection mold 1 to rise, the moving injection mold 1 will be moved away from the fixed injection mold 2, which will cause the ejector rod 5 indirectly mounted on the moving injection mold 1 to slide out of the receiving groove 6. During this process, the ejector rod 5 can eject the overmolded part on the fixed injection mold 2, which facilitates the discharge of the overmolded part.

[0021] like Figures 1 to 4 As shown, fixed blocks 7 are symmetrically fixedly installed on both sides of the injection molding moving mold 1. The ends of the fixed blocks 7 are provided with first sliding holes 8. One of the movable rods 4 is slidably installed inside the first sliding hole 8. Rotating rods 9 are symmetrically rotated on both sides of the injection molding moving mold 1. The ends of the rotating rods 9 are provided with second sliding holes 10. The other movable rod 4 is slidably installed inside the second sliding hole 10. A first return spring 11 is sleeved on the outer side of the top of the movable rod 4. The top of the first return spring 11 is fixedly connected to the top of the movable rod 4. The bottom of the first return spring 11 is fixedly connected to the fixed block 7 or the rotating rod 9.

[0022] The injection moving mold 1 is controlled to descend, and the ejector rod 5 indirectly installed on the injection moving mold 1 is stored in the storage groove 6. Then, the metal part is placed in the bearing groove 3 on the injection fixed mold 2. Subsequently, the injection moving mold 1 is controlled to continue to descend, and the movable rod 4 will slide relative to each other in the first sliding hole 8 on the fixed block 7 and the second sliding hole 10 on the rotating rod 9. This setting can provide sufficient space for loading the metal part and unloading the overmolded part.

[0023] like Figures 1 to 4As shown, a connecting rod 12 is rotatably mounted on the bottom end of the movable rod 4 installed on the rotating rod 9, and the end of the connecting rod 12 away from the movable rod 4 is movably mounted on one side of the injection mold 2.

[0024] After the overmolded part is formed, by controlling the injection moving mold 1 to rise, when the ejector rod 5 slides out of the receiving groove 6, the ejector rod 5 will pull the connecting rod 12, which will drive the ejector rod 5 connected to the connecting rod 12 to rise in relative horizontal height, and unload the overmolded part on the two ejector rods 5.

[0025] like Figures 1 to 4 As shown, the injection mold 2 has symmetrical grooves 13 on both sides, and a slider 14 is slidably installed inside the groove 13. The end of the connecting rod 12 away from the movable rod 4 is rotatably installed on one side of the slider 14.

[0026] The movement trajectory of the slider 14 is limited by the setting of the slide groove 13.

[0027] like Figures 1 to 4 As shown, a through hole 15 is provided in the middle of the slider 14. A fixing rod 16 is fixedly installed in the injection mold 2 at the position corresponding to the through hole 15. The fixing rod 16 is slidably connected to the through hole 15. A second return spring 17 is sleeved on the outer side of one end of the fixing rod 16. One end of the second return spring 17 is fixedly connected to one end of the slider 14. The other end of the second return spring 17 is fixedly connected to the end of the injection mold 2 corresponding to the slide groove 13.

[0028] By controlling the rise of the injection mold 1, when the ejector rod 5 pulls the connecting rod 12, it will drive the slider 14 to slide inside the slide groove 13. At this time, the second return spring 17 is in a compressed state. When the ejector rod 5 slides out of the receiving groove 6, the second return spring 17 pushes the slider 14, which will drive the slider 14 to slide in the opposite direction inside the slide groove 13. This will drive the rotating rod 9, which is slidably connected to the movable rod 4, to rotate. This will drive the ejector rod 5, which is connected to the connecting rod 12, to rise in relative horizontal height, and unload the rubber-coated parts on the two ejector rods 5.

[0029] like Figures 1 to 4 As shown, a torsion spring 18 is sleeved on the outer side of the rotating rod 9. One end of the torsion spring 18 is fixedly connected to one side of the injection mold 1, and the other end of the torsion spring 18 is fixedly connected to the middle of the rotating rod 9.

[0030] When loading metal parts for the next time, the rotation angle of the rotating rod 9 can be reset by the torsion spring 18 to twist the rotating rod 9, so as to set the top rod 5 to the corresponding storage groove 6.

[0031] This utility model provides an automatic ejection device for molding overmolded parts, the specific working principle of which is as follows:

[0032] When the device is in use, the injection moving mold 1 is controlled to descend, and the ejector rod 5 indirectly installed on the injection moving mold 1 is stored in the storage groove 6. Then, the metal part is placed in the bearing groove 3 on the injection fixed mold 2. Then, the injection moving mold 1 is controlled to continue to descend. The movable rod 4 will slide relative to each other in the first sliding hole 8 on the fixed block 7 and the second sliding hole 10 on the rotating rod 9 until the injection moving mold 1 and the injection fixed mold 2 are in close contact. At this time, the first return spring 11 is in the stretched state. Then, under the operation of the screw injection assembly connected to the injection moving mold 1, the metal part is encapsulated by injection molding to form an encapsulated part.

[0033] Then, by controlling the rise of the injection moving mold 1, the injection moving mold 1 will be moved away from the injection fixed mold 2 until the first return spring 11 is in the normal state. Then, the injection moving mold 1 will continue to rise, which will cause the ejector rod 5 indirectly installed on the injection moving mold 1 to slide out of the receiving groove 6. During this process, the ejector rod 5 can eject the overmolded part on the injection fixed mold 2, which facilitates the discharge of the overmolded part. After the first return spring 11 is in the normal state, during the process of raising the injection moving mold 1, the ejector rod 5 will pull the connecting rod 12, which will cause the slider 14 to slide inside the slide groove 13. At this time, the second return spring 17 is in the compressed state. When the ejector rod 5 slides out of the receiving groove 6, the second return spring 17 pushes the slider 14, which will cause the slider 14 to slide in the opposite direction inside the slide groove 13, which will cause the rotating rod 9 slidably connected to this moving rod 4 to rotate, which will cause the ejector rod 5 connected to the connecting rod 12 to rise in relative horizontal height, and discharge the overmolded part on the two ejector rods 5.

[0034] 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 automatic ejection device for molding overmolded parts, comprising a moving injection mold (1) and a fixed injection mold (2), wherein the moving injection mold (1) is mounted on a hydraulic assembly, characterized in that: The upper surface of the fixed injection mold (2) is provided with a support groove (3) for supporting metal parts. The two sides of the moving injection mold (1) are symmetrically and movably mounted with movable rods (4). A top rod (5) is fixedly installed between the bottoms of the two movable rods (4). The middle part of the fixed injection mold (2) is provided with a storage groove (6) for storing the top rod (5). One of the movable rods (4) is rotatable.

2. The automatic ejection device for molding overmolded parts according to claim 1, characterized in that: Fixed blocks (7) are symmetrically fixed on both sides of the injection mold (1). The ends of the fixed blocks (7) are provided with first sliding holes (8). One of the movable rods (4) is slidably installed inside the first sliding hole (8). Rotating rods (9) are symmetrically rotated on both sides of the injection mold (1). The ends of the rotating rods (9) are provided with second sliding holes (10). The other movable rod (4) is slidably installed inside the second sliding hole (10). A first return spring (11) is sleeved on the outer side of the top of the movable rod (4). The top of the first return spring (11) is fixedly connected to the top of the movable rod (4). The bottom of the first return spring (11) is fixedly connected to the fixed block (7) or the rotating rod (9).

3. The automatic ejection device for molding overmolded parts according to claim 2, characterized in that: A connecting rod (12) is rotatably mounted on the bottom end of the movable rod (4) mounted on the rotating rod (9), and the end of the connecting rod (12) away from the movable rod (4) is movably mounted on one side of the injection mold (2).

4. The automatic ejection device for molding overmolded parts according to claim 3, characterized in that: The injection mold (2) has symmetrical grooves (13) on both sides. A slider (14) is slidably installed inside the groove (13). The end of the connecting rod (12) away from the movable rod (4) is rotatably installed on one side of the slider (14).

5. The automatic ejection device for molding overmolded parts according to claim 4, characterized in that: The slider (14) has a through hole (15) in the middle. The injection mold (2) is fixedly installed with a fixing rod (16) at the position corresponding to the through hole (15). The fixing rod (16) is slidably connected to the through hole (15). A second return spring (17) is sleeved on the outer side of one end of the fixing rod (16). One end of the second return spring (17) is fixedly connected to one end of the slider (14), and the other end of the second return spring (17) is fixedly connected to the end of the slide groove (13) of the injection mold (2).

6. The automatic ejection device for molding overmolded parts according to claim 3, characterized in that: A torsion spring (18) is sleeved on the outside of the rotating rod (9). One end of the torsion spring (18) is fixedly connected to one side of the injection mold (1), and the other end of the torsion spring (18) is fixedly connected to the middle of the rotating rod (9).

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