A dual-power single-shaft straight-line five-link press

Abstract

This invention relates to a dual-power single-shaft straight-line five-link press. The press includes a machine body, a main shaft, a slide block, a worktable, a power unit, a clutch and brake unit, a slide block guide rail, and five sets of connecting rods. The power unit includes two sets of power output motors respectively located on the left and right sides of the machine body. Each power output motor is connected to a flywheel via a pulley and a belt. The flywheel is connected to the clutch and brake unit, which is connected to the main shaft. Five sets of eccentric connecting rods (7a, 7b, 7c, 7d, 7e) are arranged in a straight line along the axial direction on the main shaft. The five sets of connecting rods are connected to the slide block. The two sets of power output motors, the flywheel, and the clutch and brake unit are symmetrically arranged with respect to the machine body. Connecting rod (7c) is located at the center of the main shaft's axial direction, and the other connecting rods (7a, 7b, 7d, 7e) are symmetrically arranged with respect to connecting rod (7c). The symmetrically arranged linkage structure and dual-sided synchronous drive method of this invention enable the slider to be lightweight while maintaining high rigidity, reducing deformation and lateral extrusion force, and improving motion synchronization and stamping accuracy.

Description

Technical Field

[0001] This invention relates to a press, and more particularly to a dual-power single-shaft straight-line five-link press. Background Technology

[0002] With the rapid development of new energy vehicles, the drive motors that provide power to vehicles are also being updated and iterated. The dies used for stamping the iron core stator and rotor in the drive motor are constantly being upgraded to larger stamping tonnage, longer stamping tables, more stamping stations, thinner stamping strips, faster stamping speeds, and higher stamping precision.

[0003] As a specialized equipment for stamping iron core stators and rotors, high-speed presses have increasingly higher requirements for performance, depending on the stamping tonnage, the length of the stamping table, the thickness of the stamping strip, the speed of stamping, and the precision of stamping. When the table is long and narrow, the performance of ordinary high-speed presses can no longer meet the stamping requirements of iron core stators and rotors for drive motors in new energy vehicles due to the limitations in the number and distribution of connecting rods and power output motors. Summary of the Invention

[0004] The purpose of this invention is to provide a dual-power single-shaft straight-line five-bar press to solve the problems of insufficient slider rigidity, large deformation, and asynchronous movement in the prior art.

[0005] The technical solution of the present invention is: a dual-power single-shaft straight-line five-link press, wherein the press includes a machine body, a main shaft, a slider, a worktable, a power unit, a clutch and brake unit, a slider guide rail and five sets of connecting rods; The power unit includes two sets of power output motors respectively located on the left and right sides of the fuselage. Each power output motor is connected to a flywheel in sequence via a pulley and a belt. The flywheel is connected to the clutch and brake unit, and the clutch and brake unit is connected to the main shaft; Five sets of eccentric connecting rods (7a, 7b, 7c, 7d, 7e) are arranged in a straight line along the axial direction on the main shaft, and the connecting rod sets are connected to the slider; The two sets of power output motors, flywheels, and clutch and braking units are arranged symmetrically with respect to the fuselage. The connecting rod (7c) is located at the center of the main shaft axis, and the other connecting rods (7a, 7b, 7d, 7e) are symmetrically arranged relative to the connecting rod (7c).

[0006] Preferably, the five sets of eccentric connecting rods (7a, 7b, 7c, 7d, 7e) are arranged in a straight line on the main shaft.

[0007] Preferably, the symmetrically arranged connecting rods (7a) and (7e), and connecting rods (7b) and (7d) are equidistant from the point of force application and move synchronously.

[0008] The beneficial effects of this invention are: the symmetrically arranged linkage structure and the dual-sided synchronous drive mode enable the slider to have high rigidity while being lightweight, reducing deformation and lateral extrusion force, and improving motion synchronization and stamping accuracy. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of the present invention.

[0010] Figure 2 This is a structural schematic diagram of a single-power, single-shaft, straight-line five-link press.

[0011] Figure 3 This is a structural schematic diagram of a single-power, single-shaft, straight-line, two-link press.

[0012] Figure 4 This is a schematic diagram of the deformation of the slider under force according to the present invention.

[0013] Figure 5 This is a schematic diagram of the deformation of the slider in a single-axis straight-line double-link press under force.

[0014] Figure 6 This is a schematic diagram of the deformation of a single-axis straight-line double-link press after the slider is raised.

[0015] Figure 7 This is a schematic diagram of the crankshaft deformation phase difference of the present invention.

[0016] Figure 8 This is a schematic diagram of the crankshaft deformation phase difference of a single-power, single-shaft, straight-line five-link press.

[0017] In the diagram, 1 is the power output motor, 2 is the pulley, 3 is the belt, 4 is the flywheel, 5 is the clutch and brake unit, 6 is the main shaft, 7 is the linkage assembly, 8 is the slider, 9 is the worktable, 10 is the machine body, and 11 is the slider guide rail. Detailed Implementation

[0018] like Figure 1As shown, the present invention, a dual-power single-shaft straight-line five-link press, has two sets of power output motors 1 (corresponding to "dual power"), which are integrally mounted with pulleys 2 on the left and right sides of the top of the machine body 10. They are connected to a flywheel 4 via a belt 3 to transmit the energy required for the press's stamping process. The flywheel 4 stores and releases stamping energy. A clutch and brake unit 5 is connected to the flywheel 4 and the main shaft 6 respectively, used to transfer the energy from the flywheel to the main shaft 6. Five sets of eccentric connecting rods 7 are arranged in a straight line on the main shaft 6 (corresponding to "single-shaft five-link") and connected to a slider 8. A slider guide rail 11 is mounted on the machine body 10. When the main shaft 6 rotates, the five sets of eccentric connecting rods 7 drive the slider 8, which, under the limiting action of the slider guide rail 11, converts the rotational motion of the main shaft 6 into the reciprocating motion of the slider 8. The worktable 9 is fixed to the machine body. The upper and lower molds of the motor core stator and rotor molds are respectively installed on the slider 8 and the worktable 9. The stamping of the stator and rotor of the motor core is completed in the reciprocating motion of the slider 8.

[0019] The installation positions of the two sets of power output motors 1, flywheel 4, and clutch / brake unit 5 are symmetrical with respect to the fuselage 10. Similarly, the installation positions of the five sets of eccentric connecting rods 7 are symmetrical with respect to the fuselage 10, and the positions of the connecting rods (7a and 7e) and (7b and 7d) on the left and right sides are also symmetrical with respect to the fuselage 10. This structure ensures that the energy of the power output motors 1 on both sides can be synchronously transmitted to the main shaft 6, while maintaining consistency in the movements of the connecting rods (7a and 7e) and (7b and 7d) on the left and right sides, i.e., their phase deformation times are consistent.

[0020] From the perspective of the stamping requirements of the stator and rotor of the drive motor core, the press should have a longer worktable, a faster stamping speed, and higher stamping precision. When the worktable becomes longer, the slider 8 must also become longer accordingly; when the stamping speed increases, the weight of the slider 8 needs to be as light as possible; when the stamping precision increases, the rigidity of the slider needs to be increased, deformation reduced, and motion inertia decreased, meaning the slider needs to possess both high rigidity and lightweight characteristics. However, in traditional slider structures, high rigidity means that the slider must be made tall, large, and heavy, which contradicts the requirement of lightweight design.

[0021] like Figure 3 The single-power, single-shaft, straight-line two-link press shown has only one power output motor 1 and two sets of eccentric connecting rods 7. During the stamping process, due to the presence of only two sets of connecting rods, the slider 8 at height H1 is subjected to upward bending, resulting in a large deformation D2. Simultaneously, large deformations B2 are generated on both sides, producing a large lateral compressive force F2. This lateral compressive force F2 causes the slider guide rail 11 to be compressed and worn, affecting the slider's motion accuracy (e.g., ...). Figure 5 (As shown).

[0022] To ensure the stamping accuracy of the press when it has the same worktable 9, if it is necessary to reduce the deformation D2 to D1, the deformation B2 to B1, and the lateral extrusion force F2 to F1, then the height of the slide 8 needs to be increased to H2 (e.g., Figure 6 (As shown). However, when slider 8 becomes taller, the weight will increase, the slider's motion inertia will increase, the machine tool's stamping speed will decrease, and the stamping accuracy will deteriorate.

[0023] This invention relates to a dual-power single-shaft straight-line five-link press, employing five sets of eccentrically structured link groups 7. When the height of the slider 8 is also H1, during the stamping process, the slider is subjected to force and bends upward, causing deformation. Due to the constraints of the link groups (7a, 7b, 7c, 7d, 7e), the deformation of the slider at the link locations is suppressed. The deformation amount B1 of the slider along the entire height direction is less than B2, and the deformation amount B1 on the left and right sides of the slider is less than B2. The generated lateral extrusion force F1 is also less than F2 (e.g., ...). Figure 4 (As shown). In this way, the slider is lightweight while maintaining high rigidity, ensuring the stamping speed and stamping accuracy of the press.

[0024] like Figure 2 The single-power, single-shaft, straight-line five-link press shown employs a power output motor 1 and five sets of eccentric connecting rods (or fewer). When the power output motor 1 outputs energy, and the main shaft 6 is moved by the torque T3 transmitted by the clutch braking unit 5, the five sets of connecting rods on the main shaft move accordingly. However, since the connecting rods (7a, 7b, 7c, 7d, 7e) are at different distances from the point of force application, namely L4, L5, L6, L7, and L8 respectively, there will be a phase difference when the torque of the main shaft 6 is transmitted to each connecting rod. This causes the action time of the connecting rods (7a, 7b, 7c, 7d, 7e) to be delayed sequentially. This is visually manifested as a displacement difference s4 between connecting rod (7d) and connecting rod (7e), a displacement difference s5 between connecting rod (7c) and connecting rod (7d), a displacement difference s6 between connecting rod (7b) and connecting rod (7c), and a displacement difference s7 between connecting rod (7a) and connecting rod (7b). The accumulated displacement difference will cause slider 8 to tilt during movement. Simultaneously, lateral compressive forces F3 and F2 will be generated on both sides of the slider. These lateral compressive forces F2 will cause the slider guide rail 11 to be compressed and worn, affecting the slider's movement accuracy (e.g., ...). Figure 8 (As shown).

[0025] When the press has the same worktable 9 and connecting rods 7 in the same position, the dual-power single-shaft straight-line five-link press of the present invention adopts two sets of power output motors 1 symmetrically arranged on the left and right sides. When the power output motors 1 output energy, the main shaft 6 is simultaneously subjected to the torque T1 transmitted by the clutch braking unit 5 on both sides, causing movement, and the five sets of connecting rods on the main shaft move accordingly. Since the distances L1, L2, and L3 between the connecting rods (7a and 7e) and (7b and 7d) in symmetrical positions relative to the force application point are the same, the movements of connecting rods (7a) and (7e), and connecting rods (7b) and (7d) can be consistent. This is visually manifested as the displacements s1 of connecting rods (7a) and (7e), and the displacements s2 of connecting rods (7b) and (7d) being consistent, while the displacement s3 of the connecting rod (7c) in the middle position is consistent. The displacement of the five sets of connecting rods matches the deformation state of the slider when it is subjected to force (e.g., Figure 7 (As shown). The straight-line five-link press described in this invention improves the stamping accuracy of the press in terms of crankshaft phase deformation and connecting rod displacement synchronization.

[0026] The present invention, a dual-power single-shaft straight-line five-link press, has better performance when facing the stamping requirements of larger stamping tonnage, longer stamping table, more stamping stations, thinner stamping strips, faster stamping speed, and higher stamping precision, as well as the stator and rotor of the drive motor core.

Claims

1. A dual-power single-shaft straight-line five-link press, characterized in that: The press includes a machine body (10), a main shaft (6), a slide block (8), a worktable (9), a power unit, a clutch and brake unit (5), a slide block guide rail (11), and a connecting rod assembly (7). The power unit includes two sets of power output motors (1) respectively located on the left and right sides of the fuselage (10). The power output motor (1) on each side is connected to the flywheel (4) in sequence through pulley (2) and belt (3). The flywheel (4) is connected to the clutch and brake unit (5), and the clutch and brake unit (5) is connected to the main shaft (6); Five sets of eccentric connecting rods (7a, 7b, 7c, 7d, 7e) are arranged in a straight line along the axial direction on the main shaft (6), and the connecting rod group (7) is connected to the slider (8); The two sets of power output motors (1), flywheels (4) and clutch braking units (5) are symmetrically arranged relative to the fuselage (10); The connecting rod (7c) is located at the center of the main shaft (6) axial direction, and the other connecting rods (7a, 7b, 7d, 7e) are symmetrically arranged relative to the connecting rod (7c).

2. The dual-power single-shaft straight-line five-link press according to claim 1, characterized in that: The five sets of eccentric connecting rods (7a, 7b, 7c, 7d, 7e) are arranged in a straight line on the main shaft (6).

3. The dual-power single-shaft straight-line five-link press according to claim 1, characterized in that: The symmetrically arranged connecting rods (7a) and (7e), and connecting rods (7b) and (7d) are equidistant from the point of force application and move synchronously.

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