Feeding device for carbon brush forming machine

Abstract

The utility model relates to the technical field of carbon brush forming machines, in particular to a feeding device for a carbon brush forming machine, which comprises a powder feeding box and a power arm structure, a guide rail plate is arranged at the lower end of the powder feeding box, and a guide rail for the powder feeding box to slide horizontally is laid at the upper end of the guide rail plate. The other end of the first swing arm is provided with a cam assembly used for pushing the first swing arm to swing in a reciprocating mode, and a telescopic dustproof structure is arranged at the joint of the powder feeding box and the guide rail. The power arm structure drives the powder feeding box to do linear reciprocating motion at the upper end of the guide rail plate through the movable frame body to push powder, the telescopic dustproof structure can shield the powder falling at the joint of the powder feeding box and the guide rail while sliding material pushing of the powder feeding box is not affected, the service life of the guide rail plate is prolonged, and the stability of the powder feeding box during pushing is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of carbon brush molding machines, in particular to a feeding device for a carbon brush molding machine. Background Art

[0002] A carbon brush molding machine is a product device that rationally mixes raw materials, measures and adds them into a mold according to the required amounts of different specifications and sizes, and makes them meet the specification requirements through processes such as pressure vibration or other molding processes. It is mainly used for producing various specifications and types of carbon brushes, which are widely used in motors, generators, wind power equipment, and other rotating equipment that requires current conduction. The carbon brush molding machine includes a powder feeding device, and the feeding device is used to add the mixed raw materials into the mold according to preset specifications and amounts.

[0003] For example, the Chinese patent with the application number 202023351188.4 discloses an automatic powder feeding device and a carbon brush molding machine, including a mounting seat, a crankshaft movably arranged on the mounting seat, a pushing mechanism, a powder feeding box pivotally connected to the output end of the pushing mechanism, and a hollow guide rail plate for restricting the linear movement of the powder feeding box. One end of the crankshaft is coaxially provided with a cam, and the free end of the pushing mechanism abuts against the outer edge of the cam. The feeding device of this carbon brush molding machine pushes the carbon brush powder flat into the mold through multiple jitters of the powder feeding box. However, since the feeding box is slidably arranged on the hollow track plate, the guide rails for limiting the feeding box on the hollow track plate are exposed outside. When pushing the powder, some powder will float onto the guide rails, affecting the cooperation between the feeding box and the hollow track plate and aggravating the wear of the guide rails. Summary of the Utility Model

[0004] In view of the above problems, the present utility model provides a feeding device for a carbon brush molding machine to solve the disadvantages that when the existing feeding device pushes carbon brush powder, some powder will float onto the guide rails, affecting the cooperation between the feeding box and the hollow track plate and aggravating the wear of the guide rails.

[0005] To achieve the purpose of the present utility model, the present utility model is realized through the following technical solutions: A feeding device for a carbon brush molding machine includes a powder feeding box and a power arm structure. A guide rail plate is provided at the lower end of the powder feeding box, and a guide rail for the horizontal sliding of the powder feeding box is laid on the upper end of the guide rail plate;

[0006] The power arm structure includes a first swing arm and a second swing arm. One end of the first swing arm is fixedly connected to the upper end of the second swing arm, and a cam assembly for pushing the first swing arm to swing reciprocally is provided at the other end of the first swing arm;

[0007] The powder feeding box is pivotally connected to a movable frame body provided at the lower end of the second swing arm, and a pre-pressing structure for making the powder feeding box closely adhere to the guide rail plate is provided on the movable frame body and the first swing arm;

[0008] A telescopic dust-proof structure is provided at the connection between the powder feeding box and the guide rail.

[0009] A further improvement lies in that: the cam assembly includes a power shaft, a cam and a roller. The cam is sleeved outside the power shaft, the power shaft is fixedly connected with the cam, the roller is rotatably connected to one end of the first swing arm far away from the second swing arm, and the cam is in contact with the roller.

[0010] A further improvement lies in that: the movable frame body includes a fork-shaped connecting piece and a movable frame. The fork-shaped connecting piece is pivotally connected to the lower end of the second swing arm, the lower end of the movable frame is pivotally connected to the powder feeding box, a rotating shaft is provided at the upper end of the movable frame, the rotating shaft is fixedly connected with the fork-shaped connecting piece, and the rotating shaft is rotatably connected with the movable frame.

[0011] A further improvement lies in that: the pre-pressing structure includes a tensioning cylinder arranged on the side of the movable frame, and the output end of the tensioning cylinder is pivotally connected to the middle position of the movable frame.

[0012] A further improvement lies in that: the pre-pressing structure further includes a pre-pressing cylinder arranged above the first swing arm, and the output end of the pre-pressing cylinder is pivotally connected to the middle position of the first swing arm.

[0013] A further improvement lies in that: second fixed seats are fixedly connected to the left and right ends of the guide rail, the second fixed seats are detachably connected to the upper end of the guide rail plate, a slider is slidably connected to the guide rail, and the slider is detachably connected to a first fixed seat fixedly connected to the lower end of the powder feeding box.

[0014] A further improvement lies in that: the telescopic dust-proof structure includes a bellows-type sheath sleeved outside the guide rail. The bellows-type sheath is fixedly connected to the left and right ends of the slider, and one end of the bellows-type sheath far away from the slider is fixedly connected to the second fixed seat.

[0015] A further improvement lies in that: first fixing bolts are provided at the corners of the second fixed seat. The first fixing bolts pass through the second fixed seat and are threadedly connected to the bolt holes opened at the upper end of the guide rail plate. Second fixing bolts are provided at the corners of the first fixed seat. The second fixing bolts pass through the first fixed seat and are threadedly connected to the bolt holes opened at the upper end of the slider.

[0016] Compared with the prior art, the beneficial effects of the present utility model are:

[0017] The power arm structure drives the powder feeding box to perform a linear reciprocating motion at the upper end of the guide rail plate through the movable frame body to push the powder. The telescopic dust-proof structure will block the powder falling at the connection between the powder feeding box and the guide rail while not affecting the sliding and feeding of the powder feeding box, improving the service life of the guide rail plate and the stability during the feeding of the powder feeding box. Description of the Drawings

[0018] To more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0019] Figure 1 It is a structural diagram of the first swing arm in the utility model.

[0020] Figure 2 It is a structural diagram of the second swing arm in the utility model.

[0021] Figure 3 It is a structural diagram of the guide rail in the utility model.

[0022] Figure 4 It is a structural diagram of the slider in the utility model.

[0023] Wherein: 1. First swing arm; 2. Second swing arm; 3. Fork-shaped connecting piece; 4. Rotating shaft; 5. Movable frame; 6. Powder feeding box; 7. Guide rail plate; 8. Guide rail; 9. Tightening cylinder; 10. Roller; 11. Power shaft; 12. Cam; 13. Pre-tightening cylinder; 14. Slider; 15. First fixed seat; 16. Second fixed seat; 17. Bellows-type sheath; 18. First fixing bolt; 19. Second fixing bolt. Specific embodiments

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some, rather than all, of the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present application.

[0025] According to Figure 1 、 2 As shown, a feeding device for a carbon brush forming machine is proposed in this embodiment, including a powder feeding box 6 and a power arm structure. A guide rail plate 7 is provided at the lower end of the powder feeding box 6, and a guide rail 8 for the horizontal sliding of the powder feeding box 6 is laid on the upper end of the guide rail plate 7;

[0026] The power arm structure includes a first swing arm 1 and a second swing arm 2. One end of the first swing arm 1 is fixedly connected to the upper end of the second swing arm 2, and a cam assembly for pushing the first swing arm 1 to swing reciprocally is provided at the other end of the first swing arm 1;

[0027] The powder feeding box 6 is pivotally connected to the movable frame body provided at the lower end of the second swing arm 2. The movable frame body and the first swing arm 1 are provided with a pre-pressing structure for pressing the powder feeding box 6 against the guide rail plate 7.

[0028] The second swing arm 2 is connected to the powder feeding box 6 through the movable frame body. The powder feeding box 6 is slidably arranged at the upper end of the guide rail plate 7. When the cam assembly cooperates with the first swing arm 1 to push the first swing arm 1 to swing reciprocally, the power arm structure will drive the powder feeding box 6 to move together through the movable frame body. The guide rail 8 guides the powder feeding box 6 from the lower end of the powder feeding box 6, so that the powder feeding box 6 makes a linear reciprocating motion at the upper end of the guide rail plate 7. Through multiple jitters of the powder feeding box 6, the powder is filled in the mold cavity.

[0029] In order to prevent the carbon brush powder from falling on the guide rail 8 during feeding, which affects the sliding of the guide rail 8 at the upper end of the guide rail plate 7, a telescopic dust-proof structure is provided at the connection between the powder feeding box 6 and the guide rail 8. The telescopic dust-proof structure can block the powder falling at the connection between the powder feeding box 6 and the guide rail 8 while not affecting the sliding and feeding of the powder feeding box 6, improving the service life of the guide rail 8 and the stability during the pushing of the powder feeding box 6.

[0030] Regarding the cam assembly:

[0031] The cam assembly includes a power shaft 11, a cam 12 and a roller 10. The cam 12 is sleeved outside the power shaft 11, and the power shaft 11 is fixedly connected to the cam 12. The roller 10 is rotatably connected to one end of the first swing arm 1 away from the second swing arm 2, and the cam 12 is in contact with the roller 10.

[0032] The power shaft 11 is connected to the motor in the carbon brush forming machine. The motor controls the rotation of the power shaft 11. During the rotation of the power shaft 11, the cam 12 is driven to rotate accordingly. The flange on the outside of the cam 12 pushes the first swing arm 1 to swing reciprocally by contacting the roller 10. The rolling cooperation mode between the power shaft 11 and the cam 12 has a lower friction coefficient and a longer service life during operation.

[0033] The movable frame body includes a fork-shaped connecting piece 3 and a movable frame 5. The fork-shaped connecting piece 3 is pivotally connected to the lower end of the second swing arm 2. The lower end of the movable frame 5 is pivotally connected to the powder feeding box 6. The upper end of the movable frame 5 is provided with a rotating shaft 4. The rotating shaft 4 is fixedly connected to the fork-shaped connecting piece 3, and the rotating shaft 4 is rotatably connected to the movable frame 5.

[0034] For the specific structure of the pre-pressing structure, please refer to the following description.

[0035] The pre-pressing structure includes a tensioning cylinder 9 provided on the side of the movable frame 5. The output end of the tensioning cylinder 9 is pivotally connected to the middle position of the movable frame 5. The installation end of the tensioning cylinder 9 is movably connected to the frame of the carbon brush forming machine. When pushing the carbon brush powder, the tensioning cylinder 9 applies a downward pulling force to the movable frame 5, making the powder feeding box 6 closely attached to the guide rail plate 7 while not affecting the horizontal sliding of the powder feeding box 6.

[0036] The pre - pressing structure further includes a pre - pressing cylinder 13 arranged above the first swing arm 1. The output end of the pre - pressing cylinder 13 is pivotally connected to the middle position of the first swing arm 1. The mounting end of the pre - pressing cylinder 13 is movably connected to the frame of the carbon brush molding machine. When pushing the carbon brush powder, the pre - pressing cylinder 13 adjusts the height of the power arm structure, applies pressure to the movable frame 5, and makes the powder feeding box 6 closely adhere to the guide rail plate 7, ensuring that the power arm structure meets the stable and reliable design requirements during the process of pushing the powder feeding box 6, and improving the processing quality of the carbon brush molding machine.

[0037] Please refer to Figure 2 、 Figure 3 and Figure 4 . It is worth further explaining that the left and right ends of the guide rail 8 are fixedly connected with a second fixing seat 16. The second fixing seat 16 is detachably connected to the upper end of the guide rail plate 7. A slider 14 is slidably connected to the guide rail 8. The slider 14 is detachably connected to the first fixing seat 15 fixedly connected to the lower end of the powder feeding box 6. The guide rail 8 cooperates with the slider 14 to horizontally guide the powder feeding box 6. The detachable installation method facilitates the staff to replace the guide rail 8 on the guide rail plate 7.

[0038] Regarding the telescopic dust - proof structure:

[0039] The telescopic dust - proof structure includes a bellows - type sheath 17 sleeved outside the guide rail 8. The bellows - type sheath 17 is fixedly connected to the left and right ends of the slider 14. One end of the bellows - type sheath 17 far from the slider 14 is fixedly connected to the second fixing seat 16. The bellows - type sheath 17 fixed between the slider 14 and the second fixing seat 16 has good sealing performance, can effectively prevent pollutants such as dust and iron filings from entering the guide rail 8, and keep the guide rail 8 clean and running normally. At the same time, the bellows - type sheath 17 itself also has good telescopicity and can freely expand and contract according to the left - right sliding of the slider 14, maintaining close contact with the guide rail 8 and the slider 14.

[0040] In the preferred solution, a first fixing bolt 18 is provided at the corner of the second fixing seat 16. The first fixing bolt 18 passes through the second fixing seat 16 and is threadedly connected to the bolt hole opened at the upper end of the guide rail plate 7. A second fixing bolt 19 is provided at the corner of the first fixing seat 15. The second fixing bolt 19 passes through the first fixing seat 15 and is threadedly connected to the bolt hole opened at the upper end of the slider 14. When removing the guide rail 8 from the guide rail plate 7, the first fixing bolt 18 on the second fixing seat 16 is screwed out from the bolt hole on the guide rail plate 7, and the second fixing bolt 19 on the first fixing seat 15 is screwed out from the bolt hole on the slider 14.

[0041] The working principle of this application:

[0042] The second swing arm 2 is connected to the powder feeding box 6 through a movable frame body. The powder feeding box 6 is slidably arranged at the upper end of the guide rail plate 7. When the cam assembly cooperates with the first swing arm 1 to push the first swing arm 1 to swing reciprocally, the power arm structure will drive the powder feeding box 6 to move together through the movable frame body. The guide rail 8 guides the powder feeding box 6 from the lower end of the powder feeding box 6, so that the powder feeding box 6 makes a linear reciprocating motion at the upper end of the guide rail plate 7. Through the multiple jitters of the powder feeding box 6, the drawback that the powder feeding device of the existing carbon brush forming machine uses the self-gravity of the powder to fall into the mold cavity and is difficult to fill is solved. The telescopic dust-proof structure can block the powder falling at the connection between the powder feeding box 6 and the guide rail 8 while not affecting the sliding and feeding of the powder feeding box 6, improving the service life of the guide rail 8 and the stability during the feeding of the powder feeding box 6.

[0043] In the description of the present application, it should be noted that the orientation or positional relationship indicated by terms such as "upper" and "lower" is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation to the present application. Unless otherwise clearly specified and defined, the terms "installed", "connected" and "connected" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0044] The above are only the specific embodiments of the present application, enabling those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A feeding device for a carbon brush forming machine, comprising a powder feeding box (6) and a power arm structure. A guide rail plate (7) is provided at the lower end of the powder feeding box (6), and a guide rail (8) for the horizontal sliding of the powder feeding box (6) is laid on the upper end of the guide rail plate (7). It is characterized in that: The power arm structure includes a first swing arm (1) and a second swing arm (2). One end of the first swing arm (1) is fixedly connected to the upper end of the second swing arm (2), and a cam assembly for pushing the first swing arm (1) to swing reciprocally is provided at the other end of the first swing arm (1); The powder feeding box (6) is pivotally connected to a movable frame body provided at the lower end of the second swing arm (2), and a pre-pressing structure for making the powder feeding box (6) closely adhere to the guide rail plate (7) is provided on the movable frame body and the first swing arm (1); A telescopic dust-proof structure is provided at the connection between the powder feeding box (6) and the guide rail (8).

2. The feeding device for a carbon brush molding machine according to claim 1, wherein: The cam assembly includes a power shaft (11), a cam (12) and a roller (10). The cam (12) is sleeved outside the power shaft (11), the power shaft (11) is fixedly connected to the cam (12), the roller (10) is rotatably connected to one end of the first swing arm (1) far from the second swing arm (2), and the cam (12) is in contact with the roller (10).

3. The feeding device for a carbon brush molding machine according to claim 1, characterized in that: The movable frame body includes a fork-shaped connecting piece (3) and a movable frame (5). The fork-shaped connecting piece (3) is pivotally connected to the lower end of the second swing arm (2), the lower end of the movable frame (5) is pivotally connected to the powder feeding box (6), a rotating shaft (4) is provided at the upper end of the movable frame (5), the rotating shaft (4) is fixedly connected to the fork-shaped connecting piece (3), and the rotating shaft (4) is rotatably connected to the movable frame (5).

4. The feeding device for a carbon brush molding machine according to claim 3, characterized in that: The pre-pressing structure includes a tensioning cylinder (9) provided on the side of the movable frame (5), and the output end of the tensioning cylinder (9) is pivotally connected to the middle position of the movable frame (5).

5. The feeding device for a carbon brush molding machine according to claim 4, characterized in that: The pre-pressing structure further includes a pre-pressing cylinder (13) provided above the first swing arm (1), and the output end of the pre-pressing cylinder (13) is pivotally connected to the middle position of the first swing arm (1).

6. The feeding device for a carbon brush molding machine according to claim 1, characterized in that: Second fixing seats (16) are fixedly connected to the left and right ends of the guide rail (8), the second fixing seats (16) are detachably connected to the upper end of the guide rail plate (7), a slider (14) is slidably connected to the guide rail (8), and the slider (14) is detachably connected to a first fixing seat (15) fixedly connected to the lower end of the powder feeding box (6).

7. The feeding device for a carbon brush molding machine according to claim 6, wherein: The telescopic dust-proof structure includes a bellows-type sheath (17) sleeved outside the guide rail (8), the bellows-type sheath (17) is fixedly connected to the left and right ends of the slider (14), and one end of the bellows-type sheath (17) far from the slider (14) is fixedly connected to the second fixing seat (16).

8. The feeding device for a carbon brush molding machine according to claim 6, characterized in that: A first fixing bolt (18) is provided at the corner of the second fixing base (16). The first fixing bolt (18) passes through the second fixing base (16) and is threadedly connected to a bolt hole formed at the upper end of the guide rail plate (7). A second fixing bolt (19) is provided at the corner of the first fixing base (15). The second fixing bolt (19) passes through the first fixing base (15) and is threadedly connected to a bolt hole formed at the upper end of the slider (14).

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