A direct-drive motor auxiliary starting system and a forging press

Abstract

This invention discloses a direct-drive motor auxiliary starting system and a forging press, relating to the technical field of direct-drive mechanical presses. It includes an air source connected via a main pipeline to a shut-off valve, a pressure reducing valve, a check valve, and an air tank. The air tank is connected via branch pipelines to several two-position three-way shut-off valves. A balancing cylinder includes a cylinder body and a piston rod, with the piston rod dividing the cylinder body into an upper chamber and a lower chamber. The air tank is connected to the upper chamber via the first outlet of the two-position three-way shut-off valve and a first quick exhaust valve. The air tank is connected to the lower chamber via the second outlet of the two-position three-way shut-off valve and a second quick exhaust valve. The assisted lifting and starting / stopping of the balancing cylinder reduces the energy loss of the direct-drive motor and simultaneously increases the punching force when forging workpieces. The high-power direct-drive motor auxiliary starting system can be used in the crank-driven direct-drive press of the first embodiment and the screw-driven direct-drive press of the second embodiment.

Description

Technical Field

[0001] This invention relates to the field of electrical equipment testing technology, and in particular to a direct-drive motor auxiliary starting system and a forging press. Background Technology

[0002] Mechanical presses are used for processes such as blanking, bending, forming, shallow drawing, and hot forging. They are applied in the automotive, tractor, hardware tool, medical device, tableware, construction machinery, tool manufacturing, and textile machinery industries. In traditional mechanical presses, the electric motor transmits motion to a large pulley via a V-belt, and then to the crankshaft via a pinion and a large gear. The upper end of the connecting rod is mounted on the crankshaft, and the lower end is connected to the moving block, converting the rotational motion of the crankshaft into the linear reciprocating motion of the moving block. The upper die is mounted on the moving block, and the lower die is mounted on a pad. Therefore, when the material is placed between the upper and lower dies, blanking or other deformation processes can be performed to produce workpieces. Due to the needs of the production process, the moving block sometimes moves and sometimes stops, so a clutch and brake are installed. The time for process operation in the entire working cycle of the press is very short, that is, the loaded working time is very short, and most of the time is the unloaded idle time. In order to distribute the load on the electric motor evenly and utilize energy effectively, a flywheel is installed, and the large pulley acts as the flywheel. However, it has problems such as multiple transmission chains, low transmission efficiency, and high noise.

[0003] CN 114506110 A discloses a direct-drive crank press, including a machine body, a crank mounted in a bore in the machine body, a connecting rod mounted in the middle of the crank, a moving block mounted on the connecting rod, a flywheel mounted on the other end of the crank for storing and releasing energy, a brake mounted on the side of the machine body for braking the outer surface of the flywheel, a rotor with a flange mounted on the flywheel by fastening bolts, a motor bracket mounted on the side of the machine body, and a direct-drive motor mounted on the motor bracket and directly driving the rotor to rotate. This invention provides a direct-drive crank press with a short transmission chain, simple structure, few parts, small size, light weight, simple installation, easy manufacturing, low cost, smooth transmission, high forging precision, low noise, convenient maintenance, long service life, and significant energy savings. It can be widely used in forging processes. However, the direct-drive motor in this invention has a large load. Therefore, this invention provides a direct-drive motor auxiliary starting system and a forging press to reduce the load on the direct-drive motor, thereby reducing its energy consumption. Summary of the Invention

[0004] In order to overcome the above-mentioned defects in the prior art, the present invention provides a direct drive motor auxiliary starting system.

[0005] A direct-drive motor auxiliary starting system includes an air source connected to a shut-off valve, a pressure reducing valve, a check valve, and an air tank via a main pipeline. The air tank is connected to several two-position three-way shut-off valves via branch pipelines. A balancing cylinder includes a cylinder body and a piston rod, the piston rod dividing the cylinder body into an upper chamber and a lower chamber. The air tank is connected to the upper chamber via a first outlet of the two-position three-way shut-off valve and a first quick exhaust valve. The air tank is connected to the lower chamber via a second outlet of the two-position three-way shut-off valve and a second quick exhaust valve.

[0006] Furthermore, a water filter and a first oil mist lubricator are connected downstream of the shut-off valve.

[0007] Furthermore, a safety valve and a second oil mist lubricator are connected in sequence downstream of the gas storage tank.

[0008] The present invention also provides a forging press, including a direct drive motor auxiliary starting system, wherein the direct drive motor auxiliary starting system is the direct drive motor auxiliary starting system described in any of the above technical solutions.

[0009] Furthermore, the two balance cylinders are mounted on the frame, the top of the frame is equipped with a direct drive motor, the middle of the frame is equipped with a stamping space, the stamping space is equipped with a stamping assembly, the stamping assembly moves in the vertical direction in the stamping space, the stamping assembly is connected to the transmission assembly through a moving block, and the balance cylinder is connected to the stamping assembly through a bracket to assist in lifting and starting / stopping the stamping assembly.

[0010] Furthermore, the inner sidewall of the frame is symmetrically provided with several vertical guide rails, and the sidewall of the stamping assembly is provided with several guide blocks, and the guide rails and guide blocks are slidably connected.

[0011] Furthermore, the transmission assembly includes a first flywheel and a crank that are sequentially connected to the output end of the direct drive motor, and a connecting rod mounted on the crank is fixedly connected to the moving block.

[0012] Furthermore, the end of the crank away from the first flywheel is connected to the first brake.

[0013] Furthermore, the transmission assembly includes a screw, the top of which is connected to the output end of the direct drive motor, and the bottom of which is threadedly connected to the moving block. The second flywheel is fixedly sleeved on the outside of the screw.

[0014] Furthermore, two second brakes are fixedly installed on the frame, with the braking end of the second brake corresponding to the second flywheel.

[0015] The beneficial effects of this invention are as follows: In this invention, a direct-drive motor-assisted starting system is used to achieve the function of a balancing cylinder in assisting the lifting, lowering, and starting / stopping of the stamping assembly. The air source is connected to a shut-off valve, a pressure reducing valve, a check valve, and an air tank via a main pipeline. The air tank helps maintain stable gas pressure. When the piston rod moves upward, the solenoid coil of the two-position three-way shut-off valve is energized, and the second outlet of the two-position three-way shut-off valve connects to the lower chamber. Compressed air from the air tank enters the lower chamber of the balancing cylinder. Gas in the upper chamber is rapidly exhausted through the outlet of the first quick exhaust valve. The compressed air in the lower chamber pushes the piston rod upward, thereby assisting the stamping assembly in lifting, lowering, and stopping. When the piston rod moves downward, the solenoid coil of the two-position three-way shut-off valve is de-energized, and the compressed air in the air tank enters the upper chamber through the first outlet of the two-position three-way shut-off valve, pushing the piston rod downward, thereby assisting the stamping assembly to stamp downward. At the same time, the air in the lower chamber is discharged through the second quick exhaust valve. The auxiliary lifting and starting / stopping of the balancing cylinder reduces the energy loss of the direct drive motor and increases the stamping force when forging the workpiece. The direct drive motor auxiliary starting system can be used in the crank-driven direct drive press in the first embodiment and the screw-driven direct drive press in the second embodiment, or in other devices that require auxiliary lifting. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 This is a schematic diagram of the structure of a direct drive motor auxiliary starting system and a forging press according to the present invention;

[0018] Figure 2 This is a schematic diagram of the structure of a first embodiment of a forging press according to the present invention;

[0019] Figure 3 This is a front view of a first embodiment of a forging press according to the present invention;

[0020] Figure 4 This is a front-view cross-sectional view of a first embodiment of a forging press according to the present invention;

[0021] Figure 5 This is a front view of a second embodiment of a forging press according to the present invention;

[0022] Figure 6 This is a front-view cross-sectional view of a second embodiment of a forging press according to the present invention.

[0023] In the diagram: 1. Air source; 2. Main pipeline; 3. Shut-off valve; 4. Pressure reducing valve; 5. Check valve; 6. Air tank; 7. Branch pipeline; 8. First quick exhaust valve; 9. Cylinder body; 10. Piston rod; 11. Upper chamber; 12. Lower chamber; 13. Second quick exhaust valve; 14. Two-position three-way shut-off valve; 15. Water filter; 16. First oil mist lubricator; 17. Safety valve; 18. Second oil mist lubricator; 19. Direct drive motor; 20. Frame; 21. Pressing space; 22. Moving block; 23. First flywheel; 24. Crank; 25. Connecting rod; 26. First brake; 27. Screw; 28. Second flywheel; 29. ​​Second brake; 30. Balance cylinder; 31. Bracket; 32. Guide rail; 33. Guide block. Detailed Implementation

[0024] To more clearly illustrate the technical solution of the present invention, the present invention will be further described below with reference to the accompanying drawings. Obviously, the drawings described below are only one embodiment of the present invention. For those skilled in the art, other embodiments can be obtained based on these drawings and embodiments without creative effort, and all of them fall within the protection scope of the present invention.

[0025] like Figure 1 As shown, a direct-drive motor auxiliary starting system includes an air source 1. The air source 1 is connected to a shut-off valve 3, a pressure reducing valve 4, a one-way valve 5, and an air tank 6 via a main pipeline 2. The air tank 6 is connected to several two-position three-way shut-off valves 14 via branch pipelines 7. A balance cylinder 30 includes a cylinder body 9 and a piston rod 10. The piston rod 10 divides the cylinder body 9 into an upper chamber 11 and a lower chamber 12. The air tank 6 is connected to the upper chamber 11 via the first outlet of the two-position three-way shut-off valve 14 and a first quick exhaust valve 8. The air tank 6 is connected to the lower chamber 12 via the second outlet of the two-position three-way shut-off valve 14 and a second quick exhaust valve 13.

[0026] In the above specific embodiment, the gas source 1 is connected to a shut-off valve 3, a pressure reducing valve 4, a one-way valve 5, and a gas storage tank 6 via a main pipeline 2. The gas storage tank 6 can maintain the stability of the gas pressure. When the piston rod 10 moves upward, the solenoid coil of the two-position three-way shut-off valve 14 is energized, and the second outlet of the two-position three-way shut-off valve 14 is connected to the lower chamber 12. The compressed air in the gas storage tank 6 enters the lower chamber 12 of the balance cylinder 30. The gas in the upper chamber 11 is quickly exhausted through the outlet of the first quick exhaust valve 8. The compressed air in the lower chamber 12 pushes the piston rod 10 to move upward. When the piston rod 10 moves downward, the solenoid coil of the two-position three-way shut-off valve 14 is de-energized, and the compressed air in the gas storage tank 6 enters the upper chamber 11 through the first outlet of the two-position three-way shut-off valve 14, pushing the piston rod 10 to move downward. At the same time, the air in the lower chamber 12 is discharged through the second quick exhaust valve 13.

[0027] Downstream of the shut-off valve 3 are a water filter 15 and a first oil mist lubricator 16. Downstream of the gas storage tank 6 are a safety valve 17 and a second oil mist lubricator 18. The water filter 15 is used to filter moisture and impurities in the air. The first oil mist lubricator 16 and the second oil mist lubricator 18 are used to lubricate the components on the pipeline. The safety valve 17 is provided to release pressure by quickly venting air when the pipeline pressure is high.

[0028] The present invention also provides a forging press, including a direct drive motor auxiliary starting system, wherein the direct drive motor auxiliary starting system is the direct drive motor auxiliary starting system described in any of the above technical solutions.

[0029] Example 1, as Figure 2-4 As shown, this embodiment provides a forging press. A direct-drive motor is started, and its output drives a first flywheel 23 to rotate. The first flywheel then drives a crank to rotate, and the crank drives a moving block downwards via a connecting rod, thus achieving the forging of the forging workpiece. Two balance cylinders 30 are mounted on the frame 20 and connected to the stamping assembly via a bracket 31, assisting in the upward and downward movement of the stamping assembly. During the downward movement of the stamping assembly, the balance cylinders 30 assist in reducing the energy loss of the direct-drive motor 19 and increasing the stamping force of the stamping assembly. The specific technical solution is as follows:

[0030] Two balance cylinders 30 are mounted on the frame 20. A direct drive motor 19 is provided at the top of the frame 20. A stamping space 21 is provided in the middle of the frame 20. A stamping assembly is provided in the stamping space 21. The stamping assembly moves in the vertical direction in the stamping space. The stamping assembly is connected to the transmission assembly through a moving block 22. The balance cylinder 30 is connected to the stamping assembly through a bracket 31 and is used to assist in lifting and starting / stopping the stamping assembly.

[0031] The inner sidewall of the frame 20 is symmetrically provided with several vertical guide rails 32, and the sidewall of the stamping assembly is provided with several guide blocks 33, and the guide rails 32 and guide blocks 33 are slidably connected.

[0032] The transmission assembly includes a first flywheel 23 and a crank 24 that are sequentially connected to the output end of the direct drive motor 19, and a connecting rod 25 mounted on the crank 24 is fixedly connected to the moving block 22.

[0033] The end of the crank 24 away from the first flywheel 23 is connected to the first brake 26.

[0034] Example 2, as Figure 5-6As shown, this embodiment provides a forging press. Unlike the first embodiment, the transmission assembly of this embodiment includes a screw 27 connected to a direct drive motor 19. The screw 27 and the moving block 22 work together to achieve the up-and-down movement of the stamping assembly through the forward and reverse rotation of the direct drive motor 19. The rotation of the screw 27 drives the rotation of the second flywheel 28, and the weight of the second flywheel 28 provides an inertial force in the direction of rotation. The screw 27 is located inside the stamping assembly via the moving block 22. During the rotation of the screw 27, the linear movement of the entire stamping assembly is achieved under the action of the screw thread. The balance cylinder 30 provides a boosting effect. The specific technical solution is as follows:

[0035] The transmission assembly includes a screw 27, the top of which is connected to the output end of the direct drive motor 19, and the bottom of which is threadedly connected to the moving block 22. The second flywheel 28 is fixedly sleeved on the outside of the screw 27.

[0036] Two second brakes 29 are fixedly installed on the frame 20, and the braking end of the second brake 29 corresponds to the second flywheel 28.

[0037] The specific working process of this invention is as follows: In this invention, a direct-drive motor-assisted starting system is used to realize the function of the balance cylinder 30 in assisting the lifting, lowering, starting, and stopping of the stamping assembly. The air source 1 is connected to a shut-off valve 3, a pressure reducing valve 4, a one-way valve 5, and an air tank 6 through a main pipeline 2. The air tank 6 can maintain the stability of the gas pressure. When the piston rod 10 moves upward, the electromagnetic coil of the two-position three-way shut-off valve 14 is energized, and the second outlet of the two-position three-way shut-off valve 14 is connected to the lower chamber 12. The compressed air in the air tank 6 enters the lower chamber 12 of the balance cylinder 30. The gas in the upper chamber 11 is quickly exhausted through the outlet of the first quick exhaust valve 8. The compressed air in the lower chamber 12 pushes the piston rod 10 to move upward, thereby assisting the stamping assembly. As the workpiece moves upward, the solenoid coil of the two-position three-way shut-off valve 14 is de-energized when the piston rod 10 moves downward. Compressed air in the air tank 6 enters the upper chamber 11 through the first outlet of the two-position three-way shut-off valve 14, pushing the piston rod 10 downward, thereby assisting the stamping assembly to move downward and complete the stamping. At the same time, the air in the lower chamber 12 is discharged through the second quick exhaust valve 13. The auxiliary lifting and starting / stopping of the balance cylinder 30 reduces the energy loss of the direct drive motor 19 and increases the stamping force when the stamping assembly forges the workpiece downward. The direct drive motor auxiliary starting system can be used in the crank-driven direct drive press in the first embodiment and the screw-driven direct drive press in the second embodiment, or in devices that require auxiliary lifting.

[0038] The above embodiments are merely exemplary embodiments of the present invention and are not intended to limit the present invention. The scope of protection of the present invention is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to the present invention within the scope of its essence and protection. Such modifications or equivalent substitutions should also be considered to fall within the scope of protection of the present invention.

Claims

1. A direct-drive motor auxiliary starting system, comprising an air source (1), characterized in that, The gas source (1) is connected to a shut-off valve (3), a pressure reducing valve (4), a check valve (5) and a gas storage tank (6) via a main pipeline (2). The gas storage tank (6) is connected to several two-position three-way shut-off valves (14) via a branch pipeline (7). The balance cylinder (30) includes a cylinder body (9) and a piston rod (10). The piston rod (10) divides the cylinder body (9) into an upper chamber (11) and a lower chamber (12). The gas storage tank (6) is connected to the upper chamber (11) via the first outlet of the two-position three-way shut-off valve (14) and the first fast exhaust valve (8). The gas storage tank (6) is connected to the lower chamber (12) via the second outlet of the two-position three-way shut-off valve (14) and the second fast exhaust valve (13).

2. The direct-drive motor auxiliary starting system according to claim 1, characterized in that, Downstream of the shut-off valve (3) are a water filter (15) and a first oil mist lubricator (16).

3. The direct-drive motor auxiliary starting system according to claim 2, characterized in that, A safety valve (17) and a second oil mist lubricator (18) are connected in sequence downstream of the gas storage tank (6).

4. A forging press, characterized in that, The system comprises a direct-drive motor auxiliary starting system as described in any one of claims 1-3.

5. A forging press according to claim 4, characterized in that, Two balance cylinders (30) are mounted on a frame (20). A direct drive motor (19) is provided at the top of the frame (20). A stamping space (21) is provided in the middle of the frame (20). A stamping assembly is provided in the stamping space (21). The stamping assembly moves in the vertical direction in the stamping space. The stamping assembly is connected to the transmission assembly through a moving block (22). The balance cylinder (30) is connected to the stamping assembly through a bracket (31) and is used to assist in lifting and starting / stopping the stamping assembly.

6. A forging press according to claim 5, characterized in that, The inner sidewall of the frame (20) is provided with several vertical guide rails (32) symmetrically arranged on the left and right sides, and the sidewall of the stamping assembly is provided with several guide blocks (33), and the guide rails (32) and guide blocks (33) are slidably connected.

7. A forging press according to claim 6, characterized in that, The transmission assembly includes a first flywheel (23) and a crank (24) that are sequentially connected to the output end of the direct drive motor (19), and a connecting rod (25) mounted on the crank (24) is fixedly connected to the moving block (22).

8. A forging press according to claim 7, characterized in that, The end of the crank (24) away from the first flywheel (23) is connected to the first brake (26).

9. A forging press according to claim 6, characterized in that, The transmission assembly includes a screw (27), the top of which is connected to the output end of a direct drive motor (19), the bottom of which is threadedly connected to a moving block (22), and a second flywheel (28) is fixedly sleeved on the outside of the screw (27).

10. A forging press according to claim 9, characterized in that, Two second brakes (29) are fixedly installed on the frame (20), and the braking end of the second brake (29) corresponds to the second flywheel (28).

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