Exhaust structure of precise plastic forming mold

Abstract

The utility model discloses a precise plastic forming mold exhaust structure which comprises a protection box, the left inner wall of the protection box is fixedly connected with a fixed mold, the inner surface of the fixed mold is fixedly connected with an injection molding pipe, and the left surface of the fixed mold is fixedly connected with a plurality of limiting rods. The outer surface of the limiting rod is slidably connected with a movable mold, and the right surface of the protection box is fixedly connected with a hydraulic cylinder. Through a motor, fan blades and an activated carbon filter plate, after the motor is started, the fan blades can rotate and generate wind power, so that gas exhausted by the mold can be quickly exhausted into a protection box through a first exhaust pipe, the gas can be quickly in contact with the activated carbon filter plate, and under the action of the activated carbon filter plate, the gas can be quickly discharged into the protection box; the gas in the first exhaust pipe can be filtered, peculiar smell in the gas is filtered and then exhausted into the air through the second exhaust pipe, pollution to a production workshop is reduced, and the influence on the body of a worker is avoided.

Description

Technical Field

[0001] The utility model relates to the field of molds, in particular to an exhaust structure of a precision plastic molding mold. Background Art

[0002] Injection molding is a method of producing industrial products. Products are usually made of rubber injection molding and plastic injection molding. The molds used for injection molding usually have venting grooves to facilitate the removal of air in the mold cavity when injecting hot melt adhesive and the removal of various gases generated by the plastic raw materials during the heating process. Alternatively, a combined die or cavity can be used to vent air through the gaps between the dies.

[0003] In the prior art, since injection molding is to melt the plastic first and then use the mold groove on the mold to synthesize the required object, a large amount of odorous gas will be generated when the mold is injection molding. These gases are usually discharged directly into the air through the exhaust groove on the mold, thereby polluting the environment in the production workshop. In addition, the staff in the production workshop work in a polluted environment for a long time, which will also have a certain impact on the health of the staff. After searching, it was found that the technical solution provided by the utility model with application number 201711283781.X also has the above-mentioned problems, so a precision plastic molding mold exhaust structure is needed. Utility Model Content

[0004] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art, and to provide a precision plastic molding mold exhaust structure, which uses a motor, fan blades and an activated carbon filter plate. After starting the motor, the fan blades can rotate and generate wind, so that the gas discharged from the mold can be quickly discharged into the protective box through the first exhaust pipe, so that the gas can quickly contact the activated carbon filter plate. Under the action of the activated carbon filter plate, the gas in the first exhaust pipe can be filtered, and the odor in the gas can be filtered and then discharged into the air through the second exhaust pipe, thereby reducing the pollution caused to the production workshop and avoiding the impact on the health of the staff. Through the collection box, under the action of the collection box, the workpieces after injection molding can be collected in a centralized manner, which is convenient for the later staff to handle the workpieces.

[0005] The utility model also provides an exhaust structure of a precision plastic molding mold as described above, comprising a protective box, a fixed mold is fixedly connected to the left inner wall of the protective box, an injection molding tube is fixedly connected to the inner surface of the fixed mold, a plurality of limit rods are fixedly connected to the left surface of the fixed mold, a movable mold is slidably connected to the outer surface of the limit rod, a hydraulic cylinder is fixedly connected to the right surface of the movable mold, an output end of the hydraulic cylinder is fixedly connected to the right surface of the movable mold, a plurality of ejector pins are fixedly connected to the right inner wall of the protective box, an outer surface of the ejector pins is slidably connected to the inner surface of the movable mold, mold grooves are provided on both the fixed mold and the movable mold, and a plurality of exhaust grooves are provided on both the fixed mold and the movable mold.

[0006] A first exhaust pipe is fixedly connected to the upper surface of the protective box, a connecting plate is fixedly connected to the inner surface of the first exhaust pipe, a motor is fixedly connected to the left surface of the connecting plate, a rotating shaft is fixedly connected to the output end of the motor, a fan blade is fixedly connected to the outer surface of the rotating shaft, an end of the first exhaust pipe away from the protective box is fixedly connected to a first connecting block, a bolt is threadedly connected to the inner surface of the first connecting block, a second connecting block is threadedly connected to the outer surface of the bolt, an activated carbon filter plate is movably connected to the side of the second connecting block close to the first connecting block, and a second exhaust pipe is fixedly connected to the right surface of the second connecting block.

[0007] According to the exhaust structure of a precision plastic molding mold, the inner surface of the protective box is movably connected to a collection box, the front surface of the collection box is fixedly connected to a connecting cover, the front surface of the connecting cover is fixedly connected to a handle, and the rear surface of the connecting cover is fixedly connected to two sealing strips. Under the action of the collecting box, the workpieces after injection molding can be collected, which is convenient for workers to carry out later processing.

[0008] According to the exhaust structure of a precision plastic molding die, the hydraulic cylinder and the motor are both electrically connected to an external power source, and the outer surface of the rotating shaft is rotatably connected to the inner surface of the connecting plate.

[0009] According to the exhaust structure of a precision plastic molding mold, the number of the fan blades is multiple and distributed in a circular array, and the outer surface of the bolt is threadedly connected with a nut. The connection and fixation between the first exhaust pipe and the second exhaust pipe can be released by the bolt and the nut, and the activated carbon filter plate can be replaced or cleaned.

[0010] According to the exhaust structure of a precision plastic molding mold, a slot is provided on the protection box, and the inner surface of the slot is movably connected to the sealing strip. Under the action of the sealing strip, the sealing performance after the protection box is connected to the collection box can be improved.

[0011] According to the exhaust structure of a precision plastic molding mold, the injection tube passes through the protective box, and the first exhaust pipe is connected to the protective box, so that the gas can be discharged from the protective box through the first exhaust pipe.

[0012] According to the exhaust structure of a precision plastic molding die, the first exhaust pipe is connected to the second exhaust pipe, and the output end of the hydraulic cylinder passes through the protective box.

[0013] According to the exhaust structure of a precision plastic molding mold, a transparent visual window is provided on the protective box, and the end of the limit rod away from the fixed mold is fixedly connected to the right inner wall of the protective box. Under the action of the transparent visual window, the collection quantity in the collection box can be observed at any time, and the operation of the fixed mold and the movable mold can also be observed.

[0014] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0016] Figure 1 This is the overall structural diagram of a precision plastic molding die exhaust structure of the utility model;

[0017] Figure 2 It is a structural schematic diagram of the cross-section of a collecting box of a precision plastic molding die exhaust structure of the utility model;

[0018] Figure 3 It is a structural schematic diagram of the fixed mold cross-section part of a precision plastic molding mold exhaust structure of the utility model;

[0019] Figure 4 It is a structural schematic diagram of the cross-section of the movable mold of the exhaust structure of a precision plastic molding mold of the utility model;

[0020] Figure 5 This is a schematic structural diagram of a collecting box portion of a precision plastic molding die exhaust structure of the utility model;

[0021] Figure 6 It is a structural schematic diagram of the cross-section of the first exhaust pipe of an exhaust structure of a precision plastic molding mold of the utility model;

[0022] Figure 7 This is a schematic structural diagram of the fan blade portion of an exhaust structure of a precision plastic molding mold of the utility model;

[0023] Figure 8The utility model is a structural schematic diagram of the cross-section of an activated carbon filter plate of an exhaust structure of a precision plastic molding die.

[0024] Legend:

[0025] 1. Protective box; 2. Fixed mold; 3. Injection tube; 4. Limit rod; 5. Movable mold; 6. Hydraulic cylinder; 7. Ejector pin; 8. Mold slot; 9. Exhaust slot; 10. First exhaust pipe; 11. First connecting block; 12. Second connecting block; 13. Activated carbon filter plate; 14. Second exhaust pipe; 15. Nut; 16. Connecting plate; 17. Motor; 18. Rotating shaft; 19. Fan blade; 20. Transparent viewing window; 21. Collection box; 22. Connecting cover; 23. Handle; 24. Sealing strip; 25. Slot; 26. Bolt. DETAILED DESCRIPTION

[0026] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0027] Reference Figure 1-8 The utility model embodiment is a precision plastic molding mold exhaust structure, which includes a protective box 1, the left inner wall of the protective box 1 is fixedly connected with a fixed mold 2, the inner surface of the fixed mold 2 is fixedly connected with an injection tube 3, the left surface of the fixed mold 2 is fixedly connected with a plurality of limit rods 4, the outer surface of the limit rod 4 is slidably connected with a movable mold 5, the right surface of the protective box 1 is fixedly connected with a hydraulic cylinder 6, the output end of the hydraulic cylinder 6 is fixedly connected to the right surface of the movable mold 5, the right inner wall of the protective box 1 is fixedly connected with a plurality of ejector pins 7, the outer surface of the ejector pin 7 is slidably connected to the inner surface of the movable mold 5 Dynamic connection, mold grooves 8 are provided on the fixed mold 2 and the movable mold 5, multiple exhaust grooves 9 are provided on the fixed mold 2 and the movable mold 5, the number of fan blades 19 is multiple and distributed in a circular array, the outer surface of the bolt 26 is threadedly connected with a nut 15, the injection tube 3 passes through the protective box 1, the first exhaust pipe 10 is connected to the protective box 1, the first exhaust pipe 10 is connected to the second exhaust pipe 14, the output end of the hydraulic cylinder 6 passes through the protective box 1, and a transparent visual window 20 is provided on the protective box 1, and the end of the limit rod 4 away from the fixed mold 2 is fixedly connected to the right inner wall of the protective box 1.

[0028] The upper surface of the protection box 1 is fixedly connected with a first exhaust pipe 10, the inner surface of the first exhaust pipe 10 is fixedly connected with a connecting plate 16, the left surface of the connecting plate 16 is fixedly connected with a motor 17, the output end of the motor 17 is fixedly connected with a rotating shaft 18, the outer surface of the rotating shaft 18 is fixedly connected with a fan blade 19, the end of the first exhaust pipe 10 away from the protection box 1 is fixedly connected with a first connecting block 11, the inner surface of the first connecting block 11 is threadedly connected with a bolt 26, the outer surface of the bolt 26 is threadedly connected with a second connecting block 12, and the second connecting block 12 and the first connecting block 11 are movable on one side close to each other. An activated carbon filter plate 13 is movably connected to the protective box 1, a second exhaust pipe 14 is fixedly connected to the right surface of the second connecting block 12, a collecting box 21 is movably connected to the inner surface of the protective box 1, a connecting cover 22 is fixedly connected to the front surface of the collecting box 21, a handle 23 is fixedly connected to the front surface of the connecting cover 22, two sealing strips 24 are fixedly connected to the rear surface of the connecting cover 22, the hydraulic cylinder 6 and the motor 17 are electrically connected to an external power supply, the outer surface of the rotating shaft 18 is rotatably connected to the inner surface of the connecting plate 16, a slot 25 is provided on the protective box 1, and the inner surface of the slot 25 is movably connected to the sealing strip 24.

[0029] Working principle: By starting the hydraulic cylinder 6, the output end of the hydraulic cylinder 6 drives the movable mold 5 to move horizontally on the limit rod 4, so that the mold grooves 8 on the fixed mold 2 and the movable mold 5 can correspond to each other. When the movable movable mold 5 contacts the fixed mold 2, the raw material can be injected into the mold groove 8 through the injection tube 3 to achieve injection molding. The gas generated during injection molding is discharged from the mold through the exhaust groove 9. Through the first exhaust pipe 10 connected to the protection box 1, the gas can be discharged from the protection box 1 and transported to the position of the activated carbon filter plate 13 through the first exhaust pipe 10, so that the activated carbon filter plate 13 can filter the gas. After the activated carbon filter plate 13 filters the gas, it is discharged to the air through the front exhaust pipe connected to the protection box 1. In the process, the motor 17 connected to the connecting plate 16 is started, so that the output end of the motor 17 drives the rotating shaft 18 and the fan blades 19 to rotate, so that the rotating fan blades 19 generate wind force, accelerate the speed of gas discharge from the protective box 1, improve the exhaust efficiency of the protective box 1, and enable the gas to quickly contact the activated carbon filter plate 13. When the injection molding is completed, the hydraulic cylinder 6 is started again to shrink the output end of the hydraulic cylinder 6, so that the movable mold 5 is reset, so that the workpiece after injection molding can fall off from the fixed mold 2 and the movable mold 5 and fall into the collection box 21, so as to collect the workpiece. If the workpiece adheres to the movable mold 5, the workpiece can be ejected from the movable mold 5 by the ejector pin 7. When the workpiece in the collection box 21 is collected After a certain degree, by pulling the handle 23, the movable handle 23 drives the collection box 21 to be separated from the protection box 1, the workpieces in the collection box 21 can be processed, and through the transparent viewing window 20 provided on the protection box 1, the number of workpieces in the collection box 21 can be observed at any time, and the operation of the fixed mold 2 and the movable mold 5 can also be observed. By rotating the nut 15, after the nut 15 is unscrewed from the bolt 26, the bolt 26 can be removed from the first connecting block 11 and the second connecting block 12, the connection and fixation between the first exhaust pipe 10 and the second exhaust pipe 14 can be released, the first exhaust pipe 10 and the second exhaust pipe 14 can be separated, and the activated carbon filter plate 13 can be removed from the first connecting block 11 and the second connecting block 1 2 is removed for replacement or cleaning. When installing the activated carbon filter plate 13, the activated carbon filter plate 13 is placed on the first connecting block 11 and the second connecting block 12, and then the threaded holes on the first connecting block 11 and the second connecting block 12 are made to correspond to each other, and then the bolts 26 are inserted into the threaded holes, and then the nuts 15 are screwed on to achieve the connection and fixation between the first connecting block 11 and the second connecting block 12, and the fixation of the activated carbon filter plate 13 is completed. By inserting the sealing strip 24 into the slot 25, the collection box 21 can be inserted into the protection box 1, so that the collection box 21 can collect the workpiece, and under the action of the sealing strip 24, the sealing between the collection box 21 and the protection box 1 is improved to prevent the gas discharged from the mold from leaking out of the protection box 1.

[0030] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A precision plastic molding die exhaust structure, characterized in that: include: A protective box (1), wherein a fixed mold (2) is fixedly connected to the left inner wall of the protective box (1), an injection molding tube (3) is fixedly connected to the inner surface of the fixed mold (2), a plurality of limit rods (4) are fixedly connected to the left surface of the fixed mold (2), and a movable mold (5) is slidably connected to the outer surface of the limit rod (4), a hydraulic cylinder (6) is fixedly connected to the right surface of the protective box (1), an output end of the hydraulic cylinder (6) is fixedly connected to the right surface of the movable mold (5), a plurality of ejector pins (7) are fixedly connected to the right inner wall of the protective box (1), and the outer surface of the ejector pins (7) is slidably connected to the inner surface of the movable mold (5), the fixed mold (2) and the movable mold (5) are both provided with mold grooves (8), and the fixed mold (2) and the movable mold (5) are both provided with a plurality of exhaust grooves (9); The upper surface of the protection box (1) is fixedly connected to a first exhaust pipe (10), the inner surface of the first exhaust pipe (10) is fixedly connected to a connecting plate (16), the left surface of the connecting plate (16) is fixedly connected to a motor (17), the output end of the motor (17) is fixedly connected to a rotating shaft (18), the outer surface of the rotating shaft (18) is fixedly connected to a fan blade (19), the end of the first exhaust pipe (10) away from the protection box (1) is fixedly connected to a first connecting block (11), the inner surface of the first connecting block (11) is threadedly connected to a bolt (26), the outer surface of the bolt (26) is threadedly connected to a second connecting block (12), the second connecting block (12) is movably connected to an activated carbon filter plate (13) on the side close to the first connecting block (11), and the right surface of the second connecting block (12) is fixedly connected to a second exhaust pipe (14).

2. A precision plastic molding die exhaust structure according to claim 1, characterized in that: The inner surface of the protection box (1) is movably connected to a collection box (21), the front surface of the collection box (21) is fixedly connected to a connection cover (22), the front surface of the connection cover (22) is fixedly connected to a handle (23), and the rear surface of the connection cover (22) is fixedly connected to two sealing strips (24).

3. The exhaust structure of a precision plastic molding mold according to claim 1, characterized in that: The hydraulic cylinder (6) and the motor (17) are both electrically connected to an external power source, and the outer surface of the rotating shaft (18) is rotatably connected to the inner surface of the connecting plate (16).

4. The exhaust structure of a precision plastic molding mold according to claim 1, characterized in that: The fan blades (19) are multiple in number and distributed in a circular array, and the outer surface of the bolt (26) is threadedly connected with a nut (15).

5. The exhaust structure of a precision plastic molding mold according to claim 1, characterized in that: The protection box (1) is provided with a slot (25), and the inner surface of the slot (25) is movably connected to the sealing strip (24).

6. A precision plastic molding die exhaust structure according to claim 1, characterized in that: The injection molding tube (3) passes through the protection box (1), and the first exhaust pipe (10) is connected to the protection box (1).

7. The exhaust structure of a precision plastic molding mold according to claim 1, characterized in that: The first exhaust pipe (10) is connected to the second exhaust pipe (14), and the output end of the hydraulic cylinder (6) passes through the protection box (1).

8. The exhaust structure of a precision plastic molding mold according to claim 1, characterized in that: The protection box (1) is provided with a transparent viewing window (20), and one end of the limiting rod (4) away from the fixed mold (2) is fixedly connected to the right inner wall of the protection box (1).

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