Floating type lower die assembly

Abstract

The utility model relates to the technical field of forming machine accessories, and particularly discloses a floating type lower die assembly which comprises a driving part, a bottom plate, a lower die and a center shaft. The bottom of the lower die is connected with a sliding rod, and the bottom of the sliding rod is connected with a connecting base. The power output end of the driving component is connected with a driving shaft, the end, away from the driving component, of the driving shaft is connected with an installation shaft, and a flywheel is installed on the driving shaft. The lower die can continuously and stably float, when transmission to the lower die is stopped, the driving component stops, meanwhile, the adjusting mechanism adjusts the brake disc to move horizontally, the brake disc is attached to the limiting disc for limiting, rotation of the driving shaft is limited, and the lower die is prevented from continuously floating due to inertia or other external factors after the driving component stops. And the working stability and safety of the assembly can be ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of molding machine accessories, in particular to a floating lower mold component. Background Art

[0002] A graphite carbon brush forming machine is specialized for producing graphite carbon brushes. During production, graphite powder and a coagulant are mixed and fed into a die cavity through a feeding mechanism, where a conductive wire is inserted. The raw material is pressed into shape by a forming mechanism. Simultaneously, during the extrusion process, the conductive wire is fixed to the raw material, forming a graphite carbon brush. A floating lower die typically consists of a lower die base, a lower mold plate connected to the bearing surface of the lower die base, and a floating internal positioning assembly connected between the lower die base and the mold plate.

[0003] The reciprocating lift of the lower die in a graphite carbon brush forming machine is commonly driven by a motor. When the motor drives the lower die to lift and reciprocate, a transmission mechanism is required to convert the motor's rotational motion into linear reciprocating motion of the lower die. Common transmission mechanisms include rack and pinion transmissions, screw and nut transmissions, and connecting rod mechanisms. Because the motor carries a load, the output shaft does not rotate immediately due to the load's resistance torque and the motor rotor's rotational inertia. In a graphite carbon brush forming machine, the reciprocating lift of the lower die may become uncontrolled due to the continuous rotation of the motor, leading to equipment failure or accidents. To address these issues, a floating lower die assembly is proposed. Utility Model Content

[0004] The purpose of the present invention is to provide a floating lower mold assembly to solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A floating lower die assembly comprises a driving component, a base plate, a lower die and a center shaft;

[0007] The bottom of the lower mold is connected to the slide rod, the bottom of the slide rod is connected to the connecting seat, and the connecting seat is connected to the floating seat through a connecting shaft;

[0008] The power output end of the driving component is connected to the driving shaft, the end of the driving shaft away from the driving component is connected to the mounting shaft, the flywheel is installed on the driving shaft, the rotating sleeve is rotatably installed on the central shaft, the rotating sleeve is connected to the first connecting arm and the second connecting arm, one end of the first connecting arm is connected to the roller in contact with the flywheel, and one end of the second connecting arm is connected to the pressure wheel in contact with the floating seat;

[0009] A limiting plate is installed on the installation shaft, a brake disc is provided on one side of the limiting plate, and an adjusting mechanism for adjusting the horizontal movement of the brake disc is installed on the top of the base plate.

[0010] In an optional scheme: the adjusting mechanism includes a vertical plate and a moving block, the bottom of the vertical plate is rotatably connected to the rotating seat, the bottom of the rotating seat is fixedly connected to the support frame, the support frame is fixedly connected to the top of the base plate, the top of the vertical plate is rotatably connected to the installation shaft, one side of the brake disc is provided with a mounting groove for installing a slider, the top of the base plate is connected with a guide member for guiding the horizontal movement of the brake disc, one side of the vertical plate is hinged with a connecting rod, the connecting rod is hinged to the moving block at one end away from the vertical plate, the moving block is slidably connected to the top of the base plate, and the top of the base plate is installed with an electric telescopic rod for driving the moving block to move horizontally.

[0011] In an optional solution: the guide member includes a fixed plate and two sets of guide rods connected to one side of the fixed plate, positioning rings are connected to both sides of the brake disc, the inner wall of the positioning ring slides with the outer wall of the guide rod, and the fixed plate is fixedly connected to the top of the base plate.

[0012] In an optional solution, an anti-slip area is provided on the side where the limit disc and the brake disc are close to each other.

[0013] In an optional solution: a through hole is provided on the brake disc, and the inner diameter of the through hole is larger than the outer diameter of the mounting shaft.

[0014] In an optional solution: the bottom of the floating seat is connected to the damping rod.

[0015] In an optional solution: a guide plate is slidably mounted on the slide rod.

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

[0017] The lower die in the utility model can float continuously and stably. When the transmission to the lower die is stopped, the driving component stops. At the same time, the adjustment mechanism adjusts the horizontal movement of the brake disc and limits it against the limit disc to limit the rotation of the drive shaft, thereby preventing the lower die from continuing to float due to inertia or other external factors after the driving component stops. This helps to ensure the stability and safety of the component's operation and reduce the impact on the forming accuracy of the graphite carbon brush. Timely limit braking helps to ensure that the size and shape of the product meet the design requirements. At the same time, by limiting the floating of the lower die, the brake assembly can also effectively reduce the vibration and impact that may be generated during the shutdown process, and reduce the accidental start-up of the drive shaft after shutdown. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of the present utility model.

[0019] Figure 2 It is a schematic diagram of the local structure of the utility model.

[0020] Figure 3 It is a structural diagram of the flywheel arrangement in the present utility model.

[0021] In the figure: 10. Driving component; 11. Driving shaft; 12. Limiting plate; 13. Brake disc; 14. Fixed plate; 15. Bottom plate; 16. Electric telescopic rod; 17. Moving block; 18. Connecting rod; 19. Vertical plate; 20. Slider; 21. Mounting groove; 22. Positioning ring; 23. Guide rod; 24. Rotating seat; 25. Support frame; 26. Floating seat; 27. Connecting seat; 28. Sliding rod; 29. Lower mold; 30. Mounting shaft; 31. Flywheel; 32. Roller; 33. First connecting arm; 34. Rotating sleeve; 35. Center axis; 36. Second connecting arm; 37. Pressing wheel. DETAILED DESCRIPTION

[0022] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] See also Figure 1-Figure 3 In this embodiment, a floating lower mold assembly includes a driving component 10, a base plate 15, a lower mold 29 and a central shaft 35; the driving component 10 is a combination of an existing motor and a belt component, etc., which can output power;

[0025] The bottom of the lower mold 29 is connected to the slide rod 28, the bottom of the slide rod 28 is connected to the connecting seat 27, and the connecting seat 27 is connected to the floating seat 26 via a connecting shaft; the corresponding lower mold 29 and floating seat 26 are installed in corresponding positions in the graphite molding machine;

[0026] The power output end of the driving component 10 is connected to the driving shaft 11. The end of the driving shaft 11 away from the driving component 10 is connected to the mounting shaft 30. A flywheel 31 is installed on the driving shaft 11. A rotating sleeve 34 is rotatably installed on the central shaft 35. The rotating sleeve 34 is connected to a first connecting arm 33 and a second connecting arm 36. One end of the first connecting arm 33 is connected to a roller 32 that contacts the flywheel 31. One end of the second connecting arm 36 is connected to a pressure wheel 37 that contacts the floating seat 26. The central shaft 35 is installed in a graphite molding machine for use.

[0027] A limit plate 12 is mounted on the mounting shaft 30 , a brake disc 13 is provided on one side of the limit plate 12 , and an adjustment mechanism for adjusting the horizontal movement of the brake disc 13 is mounted on the top of the base plate 15 ;

[0028] In this embodiment, the driving component 10 is in operation, the driving shaft 11 rotates, and the flywheel 31 rotates. One rotation causes the first connecting arm 33 to swing, thereby driving the second connecting arm 36 to swing through the rotating sleeve 34. When the second connecting arm 36 is pressed down, the floating seat 26 is pressed down, and the lower mold 29 is driven downward by the slide rod 28. The second connecting arm 36 is reset, and the lower mold 29 is reset. As the driving shaft 11 continues to rotate, the lower mold 29 floats.

[0029] When the transmission to the lower die 29 is stopped, the driving component 10 stops, and at the same time the adjustment mechanism adjusts the brake disc 13 to move horizontally, abutting against the limit disc 12 for limiting, thereby limiting the rotation of the driving shaft 11.

[0030] like Figure 1 and Figure 2 As shown, in another embodiment, the adjusting mechanism includes a vertical plate 19 and a moving block 17, the bottom of the vertical plate 19 is rotatably connected to the rotating seat 24, the bottom of the rotating seat 24 is fixedly connected to the support frame 25, the support frame 25 is fixedly connected to the top of the bottom plate 15, the top of the vertical plate 19 is rotatably connected to the mounting shaft 30, one side of the brake disc 13 is provided with a mounting groove 21 for mounting the slider 20, the top of the bottom plate 15 is connected with a guide member for guiding the horizontal movement of the brake disc 13, one side of the vertical plate 19 is hinged to the connecting rod 18, the connecting rod 18 is hinged to the moving block 17 at one end away from the vertical plate 19, the moving block 17 is slidably connected to the top of the bottom plate 15, and the top of the bottom plate 15 is installed with an electric telescopic rod 16 for driving the moving block 17 to move horizontally;

[0031] When the electric telescopic rod 16 is working, it can pull the moving block 17 to move. When the moving block 17 moves to the side away from the support frame 25, the vertical plate 19 can be flipped by the connecting rod 18, so that the top of the vertical plate 19 is close to the brake disc 13, squeezing the brake disc 13 to move horizontally, thereby contacting the limit plate 12 for limiting. Conversely, when the moving block 17 is close to the support frame 25, the brake disc 13 can be away from the limit plate 12.

[0032] like Figure 2 As shown, in another embodiment, the guide member includes a fixed plate 14 and two groups of guide rods 23 connected to one side of the fixed plate 14, and positioning rings 22 are connected on both sides of the brake disc 13. The inner wall of the positioning ring 22 slides with the outer wall of the guide rod 23, and the fixed plate 14 is fixedly connected to the top of the base plate 15; when the brake disc 13 moves, the positioning ring 22 slides on the guide rod 23, so that the brake disc 13 can move horizontally stably.

[0033] In another embodiment, an anti-slip area is provided on the side where the limiting plate 12 and the brake disc 13 are close to each other; when the brake disc 13 is pressed against the limiting plate 12, the rotation of the limiting plate 12 can be effectively limited.

[0034] In another embodiment, a through hole is provided on the brake disc 13 , and the inner diameter of the through hole is larger than the outer diameter of the mounting shaft 30 .

[0035] In another embodiment, the bottom of the floating seat 26 is connected to a damping rod, which plays a resetting role. In actual use, it is installed at the corresponding installation position in the graphite carbon brush forming machine. Existing components can be used, and this application will not go into details.

[0036] In another embodiment, a guide plate is slidably mounted on the slide rod 28 ; the guide plate is installed in a graphite carbon brush forming machine and serves as a guide for the installation of the slide rod 28 .

[0037] The working principle of the utility model is as follows: the driving component 10 works, the driving shaft 11 rotates, the flywheel 31 rotates, and one rotation will cause the first connecting arm 33 to swing, thereby driving the second connecting arm 36 to swing through the rotating sleeve 34. When the second connecting arm 36 is pressed down, the floating seat 26 is pressed down, and the lower mold 29 is driven to move downward through the slide rod 28. The second connecting arm 36 is reset, and the lower mold 29 is reset. During the continuous rotation of the driving shaft 11, the lower mold 29 floats;

[0038] When the transmission to the lower mold 29 is stopped, the driving component 10 stops working. When the electric telescopic rod 16 is working, it can pull the moving block 17 to move. When the moving block 17 moves to the side away from the support frame 25, the vertical plate 19 can be pulled over by the connecting rod 18, so that the top of the vertical plate 19 is close to the brake disc 13, squeezing the brake disc 13 to move horizontally, thereby contacting the limit disc 12 for limiting. Conversely, the moving block 17 is close to the support frame 25, and the brake disc 13 can be away from the limit disc 12.

[0039] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any other form. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes for application in other fields. However, any simple modification, equivalent change and modification of the above embodiment made according to the technical essence of the present invention without departing from the content of the technical solution of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A floating lower die assembly comprising a drive component (10), a base plate (15), a lower die (29) and a central shaft (35); Its characteristics are: The bottom of the lower mold (29) is connected to the slide rod (28), the bottom of the slide rod (28) is connected to the connecting seat (27), and the connecting seat (27) is connected to the floating seat (26) through a connecting shaft; The power output end of the driving component (10) is connected to the driving shaft (11), and the end of the driving shaft (11) away from the driving component (10) is connected to the mounting shaft (30), a flywheel (31) is mounted on the driving shaft (11), a rotating sleeve (34) is rotatably mounted on the central shaft (35), and a first connecting arm (33) and a second connecting arm (36) are connected to the rotating sleeve (34), one end of the first connecting arm (33) is connected to a roller (32) in contact with the flywheel (31), and one end of the second connecting arm (36) is connected to a pressure wheel (37) in contact with the floating seat (26); A limiting plate (12) is installed on the installation shaft (30), a brake plate (13) is provided on one side of the limiting plate (12), and an adjustment mechanism for adjusting the horizontal movement of the brake plate (13) is installed on the top of the base plate (15).

2. A floating lower mold assembly according to claim 1, characterized in that: The adjusting mechanism comprises a vertical plate (19) and a moving block (17), the bottom of the vertical plate (19) is rotatably connected to a rotating seat (24), the bottom of the rotating seat (24) is fixedly connected to a support frame (25), the support frame (25) is fixedly connected to the top of the base plate (15), the top of the vertical plate (19) is rotatably connected to a mounting shaft (30), one side of the brake disc (13) is provided with a mounting groove (21) for mounting a slider (20), the top of the base plate (15) is connected with a guide member for guiding the horizontal movement of the brake disc (13), one side of the vertical plate (19) is hinged to a connecting rod (18), the connecting rod (18) is hinged to a moving block (17) at one end away from the vertical plate (19), the moving block (17) is slidably connected to the top of the base plate (15), and the top of the base plate (15) is installed with an electric telescopic rod (16) for driving the moving block (17) to move horizontally.

3. The floating lower mold assembly according to claim 2, characterized in that: The guide member comprises a fixed plate (14) and two groups of guide rods (23) connected to one side of the fixed plate (14); both sides of the brake disc (13) are connected to positioning rings (22); the inner wall of the positioning ring (22) is slidably matched with the outer wall of the guide rods (23); and the fixed plate (14) is fixedly connected to the top of the base plate (15).

4. The floating lower mold assembly according to claim 1, characterized in that: An anti-slip area is provided on the side where the limiting disc (12) and the brake disc (13) are close to each other.

5. The floating lower mold assembly according to claim 1, characterized in that: The brake disc (13) is provided with a through hole, and the inner diameter of the through hole is larger than the outer diameter of the mounting shaft (30).

6. The floating lower mold assembly according to claim 1, characterized in that: The bottom of the floating seat (26) is connected to the damping rod.

7. The floating lower mold assembly according to claim 1, characterized in that: A guide plate is slidably mounted on the slide bar (28).

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