Rotary demolding mold

Abstract

The utility model discloses a rotary demolding mold. The rotary demolding mold comprises a movable mold bottom plate, two mold feet are arranged on the top face of the movable mold bottom plate, an ejector plate is arranged between the two mold feet, the ejector plate is movably connected with a movable mold plate, the movable mold plate is fixedly connected to the top faces of the mold feet, the movable mold plate is connected with a first transmission part through a driving mechanism, and the first transmission part comprises a rotating shaft pivoted to the movable mold plate; second transmission parts are arranged on the two sides of the first gear and comprise driven gears, screws are arranged on the bottom faces of the driven gears and are in threaded connection with threaded sleeves, the tops of the driven gears are meshed with gear rings, a plurality of pin shafts penetrate through the gear rings in the radial direction, the pin shafts are inserted into the driven gears at the same time, and the top faces of the gear rings are fixedly connected with cylinders. A cavity is formed in the top face of the cylinder, a mold core fixedly connected with the movable mold bottom plate is arranged in the cavity, and an ejector sleeve fixedly connected with the ejector plate is connected to the outer side of the mold core in a sleeved mode. The automatic demolding device solves the problem that automatic demolding cannot be achieved in the prior art.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, and particularly relates to a rotary demolding mold. Background Art

[0002] As Figure 1 shown, it is a workpiece to be injection molded with metal powder. Since it has an external thread, the conventional mold structure cannot achieve automatic demolding. Summary of the Utility Model

[0003] Aiming at the deficiencies of the prior art, the purpose of the utility model is to provide a rotary demolding mold that can achieve automatic demolding.

[0004] To achieve the above purpose, the technical solution adopted by the rotary demolding mold of the utility model is as follows:

[0005] A rotary demolding mold includes a moving mold bottom plate. On the top surface of the moving mold bottom plate, there are two mold feet. Between the two mold feet, there is an ejector plate. The ejector plate is movably connected to a moving template, and the moving template is fixedly connected to the top surface of the mold feet. The moving template is connected to a first transmission member through a driving mechanism. The first transmission member includes a rotating shaft pivotally connected to the moving template. In the middle of the rotating shaft, there is a first gear. On both sides of the first gear, there are second transmission members. The second transmission member includes a driven gear meshing with the first gear. On the bottom surface of the driven gear, there is a screw rod. The screw rod is threadedly connected to a screw sleeve fixedly connected to the moving template. The top of the driven gear meshes with a gear ring. A number of pin shafts penetrate through the radial direction of the gear ring. The pin shafts are simultaneously inserted into the driven gear. On the top surface of the gear ring, there is a cylinder body. On the top surface of the cylinder body, there is a cavity. Inside the cavity, there is a core fixedly connected to the moving mold bottom plate. Outside the core, there is a push tube fixedly connected to the ejector plate.

[0006] Preferably, the driving mechanism includes an oil cylinder fixedly connected to the moving template. The telescopic end of the oil cylinder is fixedly connected to a rack. The rotating shaft is provided with a second gear meshing with the rack.

[0007] Preferably, on the top surface of the rack, there are guide sliding strips, and the moving template is provided with a slideway for the guide sliding strips to slide.

[0008] Preferably, the moving template is provided with a groove adjacent to the slideway. Inside the groove, there is a stroke limiting component. The stroke limiting component includes a movable block pivotally connected to the moving template. On the side wall of the movable block facing away from the slideway, there is a blind hole. Inside the blind hole, there is a spring. The spring drives the hook part of the movable block to extend out of the groove and tightly press on the rack. The rack is provided with a depression cooperating with the hook part, and inside the groove, there is a limiting boss cooperating with the hook part.

[0009] Preferably, an oil groove is provided on the outer peripheral surface of the cylinder body.

[0010] Compared with the prior art, the utility model has the following advantages:

[0011] The rotation of the first gear drives the rotation of the driven gear, and the driven gear drives the rotation of the screw rod. Under the action of the screw sleeve, the screw rod simultaneously drives the driven gear to move downward. The driven gear drives the toothed ring and the cylinder to rotate and move downward through the pin shaft, and finally the workpiece is ejected by the push tube to realize automatic demoulding. Brief Description of the Drawings

[0012] Figure 1 is a schematic structural view of the workpiece of the present utility model;

[0013] Figure 2 is a sectional view of the rotary demoulding die of the present utility model;

[0014] Figure 3 is a demoulding principle diagram of the rotary demoulding die of the present utility model;

[0015] Figure 4 is a schematic structural view of the first transmission member of the present utility model;

[0016] Figure 5 is a schematic structural view of the second transmission member of the present utility model;

[0017] Figure 6 is a working schematic view of the stroke limiting component of the present utility model;

[0018] Figure 7 is Figure 6 an enlarged view of part C of

[0019] Figure 8 a schematic structural view of the stroke limiting component.

[0020] Among them, 1 is the moving die bottom plate, 11 is the core, 2 is the die foot, 3 is the ejector plate, 31 is the push tube, 4 is the moving template, 41 is the screw sleeve, 42 is the slideway, 43 is the groove, 44 is the limiting boss, 5 is the driving mechanism, 51 is the oil cylinder, 52 is the rack, 521 is the guide slide bar, 522 is the depression, 6 is the first transmission member, 61 is the rotating shaft, 62 is the first gear, 63 is the second gear, 7 is the second transmission member, 71 is the driven gear, 72 is the screw rod, 73 is the toothed ring, 74 is the pin shaft, 75 is the cylinder, 751 is the cavity, 752 is the oil groove, 8 is the stroke limiting component, 81 is the movable block, 811 is the blind hole, 812 is the hook part, 82 is the spring. Detailed Embodiments

[0021] The present utility model will be further clarified below in conjunction with the drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the present utility model and not to limit the scope of the present utility model. After reading the present utility model, various equivalent forms of modification made by those skilled in the art fall within the scope defined by the appended claims of this application.

[0022] Such as Figure 2-8As shown, a rotary demoulding mold comprises a movable mold base plate 1, two mold feet 2 are installed on the top surface of the movable mold base plate, an ejector plate 3 is arranged between the two mold feet, the ejector plate is movably connected to the movable mold plate 4, the movable mold plate is fixed to the top surface of the mold feet, the movable mold plate is connected to the first transmission member 6 through a driving mechanism 5, the driving mechanism comprises an oil cylinder 51 fixed to the movable mold plate, the telescopic end of the oil cylinder is fixed to the rack 52, the first transmission member comprises a rotating shaft 61 pivotally connected to the movable mold plate, the middle part of the rotating shaft is integrally formed with a first gear 62 and a second gear 63, the second gear is meshed with the rack, in order to balance the force, the number of racks There are two of them, which are located at the front and rear sides of the second gear. The corresponding number of oil cylinders is two. The second transmission member 7 is arranged on the left and right sides of the first gear. The second transmission member includes a driven gear 71 meshing with the first gear. The bottom surface of the driven gear is integrally formed with a screw 72, which is threadedly connected to a screw sleeve 41 fixed to the moving template. The top of the driven gear meshes with a gear ring 73. Four evenly distributed pins 74 are passed through the radial direction of the gear ring. The pins are inserted into the driven gear at the same time. The top surface of the gear ring is fixed to a cylinder 75. The top surface of the cylinder is provided with a cavity 751, and the outer circumferential surface of the cylinder is provided with an oil groove. 752, which is convenient for the cylinder to rotate and demould. The cylinder and the gear ring are detachably connected, which is convenient for the processing of the cavity and the oil groove. The cylinder is connected to the driven gear through the gear ring to ensure that the torque transmitted to the cylinder is large enough. The core 11 is arranged in the cavity. The core passes through the cylinder, the second transmission member and the ejector plate and is fixed to the bottom plate of the movable mold. The outer side of the core is sleeved with a push tube 31 fixed to the ejector plate. The top surface of the rack is integrally formed with a guide slide 521. The movable mold plate is provided with a slideway 42 for the guide slide to slide. The slideway and the guide slide cooperate to guide the rack movement. The movable mold plate is adjacent to the slideway. A groove 43 is provided in which a stroke limit assembly 8 is installed. The stroke limit assembly includes a movable block 81 pivotally connected to the movable template. A blind hole 811 is provided on the side wall of the movable block facing away from the slideway. A spring 82 is installed in the blind hole. The spring drives the hook 812 of the movable block to extend out of the groove and press against the rack. The rack is provided with a recess 522 for cooperating with the hook. A limit boss 44 for cooperating with the hook is arranged in the groove. The limit boss is naturally formed when the groove is processed on the movable template. The hook is sunken into the recess and simultaneously conflicts with the limit boss to prevent the rack from continuing to slide, thereby preventing the cylinder from exceeding the stroke when resetting.

[0023] The specific working process and principle of the utility model are as follows: when demoulding, the telescopic end of the front oil cylinder extends out, and the telescopic end of the rear oil cylinder retracts, that is, the front rack moves to the right, and the rear rack moves to the left at the same time, and the front and rear racks jointly drive the second gear to rotate, and the first gear integrated with the second gear simultaneously drives the left and right driven gears to rotate, and the screw rod and the screw sleeve generate screw transmission, driving the cylinder to rotate and move downward at the same time, and finally the push tube pushes out the workpiece to realize automatic demoulding; when resetting, the operation is reversed, and when the hook part sinks into the depression, the cylinder is completely reset.

Claims

1. A rotary demolding mold, comprising a moving mold bottom plate, two mold feet are arranged on the top surface of the moving mold bottom plate, an ejector plate is arranged between the two mold feet, the ejector plate is movably connected with a moving template, and the moving template is fixedly connected to the top surface of the mold feet, and is characterized in that: The moving template is connected with a first transmission member through a driving mechanism. The first transmission member includes a rotating shaft pivotally connected to the moving template. A first gear is arranged in the middle of the rotating shaft. Second transmission members are arranged on both sides of the first gear. The second transmission member includes a driven gear meshing with the first gear. A screw rod is arranged on the bottom surface of the driven gear. The screw rod is in threaded connection with a screw sleeve fixedly connected to the moving template. The top of the driven gear meshes with a toothed ring. A plurality of pin shafts penetrate through the toothed ring in the radial direction. The pin shafts are simultaneously inserted into the driven gear. A cylinder body is fixedly connected to the top surface of the toothed ring. A cavity is formed in the top surface of the cylinder body. A core fixedly connected to the moving die bottom plate is arranged in the cavity. A push tube fixedly connected to the ejector plate is sleeved on the outer side of the core.

2. The rotary demolding mold according to claim 1, wherein: The driving mechanism includes an oil cylinder fixedly connected to the moving template. A rack is fixedly connected to the telescopic end of the oil cylinder. A second gear meshing with the rack is arranged on the rotating shaft.

3. The rotary demolding mold according to claim 2, wherein: A guide slide bar is arranged on the top surface of the rack. A slideway for the guide slide bar to slide is formed in the moving template.

4. The rotary demolding mold according to claim 3, wherein: A groove is formed in the moving template adjacent to the slideway. A stroke limiting component is arranged in the groove. The stroke limiting component includes a movable block pivotally connected to the moving template. A blind hole is formed in the side wall of the movable block facing away from the slideway. A spring is arranged in the blind hole. The spring drives the hook portion of the movable block to extend out of the groove and tightly press on the rack. A depression cooperating with the hook portion is formed in the rack. A limiting boss cooperating with the hook portion is arranged in the groove.

5. The rotary demolding mold according to claim 1, wherein: An oil groove is formed in the outer peripheral surface of the cylinder body.

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