Electric rotary mechanical clamp

Abstract

The utility model discloses a kind of electric rotary mechanical clamps, include: a drive unit, inside being equipped with motor and main shaft, motor front end connects brake;Front configuration rotating mechanism outer shell, its front end is replaceable clamping unit, clamping unit is connected by connecting rod piece and extends piece pivoted in the one end of the main shaft, clamping rotating mechanism is composed of limit seat and brake pad, between rotating mechanism outer shell and brake, main shaft is arranged, and limit seat surface is embedded with magnet piece;When power on, brake pad is magnetized due to coil, magnetically adsorbed and horizontally attached, and press a spring, main shaft can only be displaced to control the opening and closing of clamping unit;When not power on, the spring pushes brake pad, one side is inclined and adsorbs magnet piece, restricts main shaft displacement, so that it can only drive clamping rotating mechanism rotation, simultaneously keep the current state of clamping unit, effectively prevent object from falling, realized the multifunctional integration of single motor, greatly simplify structure, reduce cost and maintenance difficulty.

Description

Technical Field

[0001] This utility model relates to the field of mechanical clamps, and in particular to an electric rotary mechanical clamp that combines clamping, releasing and rotating functions, and whose operation mode is precisely controlled by a single motor combined with a brake and a magnetic adsorption mechanism. Background Technology

[0002] In the field of automated production and assembly, robotic arms or automated equipment often need to be paired with multifunctional end effectors to meet diverse operational needs. These actuators typically integrate gripping and rotating mechanisms to perform a series of operations such as grasping, placing, flipping, or positioning workpieces.

[0003] Most mechanical clamps on the market are single-function designs, such as pneumatic grippers that only have clamping functions, or rotary cylinders that simply provide rotation functions. To achieve both clamping and rotation functions at the same time, it is usually necessary to stack and combine modules with different functions. However, this integration method will significantly increase the size and weight of the overall mechanism, and may require an additional drive source to ensure stable operation. It also requires independent signal control and adjustment, thereby increasing the difficulty and cost of operating the whole machine.

[0004] Although integrated mechanical fixtures can provide both clamping and rotation functions, controlling these two functions simultaneously requires satisfying the power control of two drive sources and the coordination of functional signals, which presents certain challenges in integration.

[0005] For example, Taiwan application 109138662 proposes an integrated clamping and rotating mechanism that uses two motors to perform two functions respectively. However, its structure may still have limitations. For example, in some application scenarios, the switching speed or accuracy of clamping and rotating modes may still have room for improvement, or its complex internal structure may lead to higher manufacturing costs and difficulty in maintenance.

[0006] Although the aforementioned integrated mechanical clamp can provide both clamping and rotation functions, both functions need to be controlled simultaneously. Therefore, the integration requires meeting the power control of two drive sources and the coordination of functional signals, which is quite challenging. As a result, how to design an electromechanical clamp with a compact structure, high functional integration, and the ability to accurately and stably switch between clamping and rotation modes has always been an important issue in this technical field. Utility Model Content

[0007] The present invention aims to provide an electric rotary mechanical clamp that solves the above-mentioned problems, so as to improve the efficiency, accuracy and application flexibility of automated equipment.

[0008] The electric rotary mechanical clamp of this utility model includes: a drive unit, which has a motor inside that is connected to the main shaft and is housed together in a housing. The front end of the motor is connected to a brake, so that the main shaft can be precisely positioned at the center of the brake after engaging with a spring. At the same time, the rear end of the motor is electrically connected to a control circuit and closes with the bottom cover to form the drive unit.

[0009] At the front end of this drive unit, there is a rotating mechanism housing, and the clamping unit is located in front of the rotating mechanism housing. The clamping unit is connected to an extension member pivotally connected to one end of the main shaft with a connecting rod. In addition, the device also includes a clamping rotating mechanism, which is composed of a limiting seat and a brake pad pivotally mounted thereon. This clamping rotating mechanism is strategically located between the rotating mechanism housing and the brake, and the main shaft passes through the limiting seat and the brake pad.

[0010] The limiting seat also has a magnet embedded in its surface. When the brake is energized, the brake is energized by the coil, and the magnetic attraction causes the brake pad to be in a horizontally attached state, pressing the spring. The main shaft can only move back and forth to drive the clamping unit to clamp and place objects. When the brake is not energized, the brake pad will be pushed against the magnet by the spring, tilting to one side and magnetically attracting the magnet. The other side of the brake pad will block the main shaft, restricting the main shaft from moving. It can only drive the clamping rotation mechanism to rotate in a circular motion and maintain the current clamping and placing state of the clamping unit.

[0011] Optionally, the brake pad may also include a limiting hole located at the center of the brake pad, the limiting hole having a roughly diamond-shaped design.

[0012] Optionally, the motor can be a stepper motor or a servo motor.

[0013] Through the above structural application, the electric rotary mechanical clamp of this utility model provides a device that can accurately and stably switch between clamping and rotation functions. This function is achieved through a specific braking mechanism to improve the efficiency and application flexibility of automated equipment. It only requires a single drive source, thereby simplifying the complex structural composition, reducing costs, and making it easy to maintain. Attached Figure Description

[0014] Figure 1 This is a perspective view of the present invention.

[0015] Figure 2 This is a cross-sectional view of the present invention.

[0016] Figure 3 This is an exploded view of the present invention.

[0017] Figure 4This is a schematic diagram of the switch-closed mechanism of the clamping unit formed by the brake pads and the brake in this utility model.

[0018] Figure 5 This is a schematic diagram of the clamping and rotating mechanism formed by the tilting of the brake pads, which rotates synchronously with the clamping unit.

[0019] Figure 6 This is a schematic diagram of the replaceable clamping unit (one) of this utility model.

[0020] Figure 7 This is a schematic diagram of the replaceable clamping unit (II) of this utility model.

[0021] Figure 8 This is a schematic diagram of the replaceable clamping unit (three) of this utility model.

[0022] The diagram is marked as follows:

[0023] 10. Drive Unit

[0024] 11. Outer shell

[0025] 12. Motor

[0026] 121. Brake

[0027] 122. Control circuit

[0028] 123. Coil

[0029] 13. Bottom cover

[0030] 20. Spindle

[0031] 21. Limiting seat

[0032] 211...Magnetic sheet

[0033] 22. Brake pads

[0034] 221. Limiting hole

[0035] 23. Clamping and rotating mechanism

[0036] 30. Rotating mechanism housing

[0037] 301... Bearing

[0038] 40. Clamping Unit

[0039] 41. Extension

[0040] 411. Connecting rod

[0041] 42. Spring Detailed Implementation

[0042] Generally, according to this utility model, the preferred feasible embodiment, in conjunction with the accompanying drawings, Figures 1-5 The detailed description enhances the understanding of this utility model. This utility model discloses an electric rotary mechanical clamp, comprising: a motor 12 connected to a main shaft 20, which is then housed inside a housing 11; a brake 121 connected to the front end of the motor 12; and a coil 123 disposed inside the brake 121, so that a spring 42 fitted on the outside of the main shaft 20 can be positioned at the center of the brake 121; and a control circuit 122 electrically connected to the rear end of the motor 12 to cooperate with a bottom cover 13 for closure. The aforementioned motor 12 is designed as a stepper motor or a servo motor, but is not limited to this design, and can be controlled by the control circuit 122 using pulse signals.

[0043] A rotating mechanism housing 30 is disposed at the front end of the drive unit 10; a clamping unit 40 is disposed at the front end of the rotating mechanism housing 30. The clamping unit 40 is connected to an extension 41 via a connecting rod 411 and is pivotally connected to one end of the main shaft 20. Specifically, the size of the spring 42 needs to be larger than the diameter of the main shaft 20 in order to be fitted between the main shaft 20 and the brake 121.

[0044] The rotating mechanism housing 30 and the brake 121 have a clamping rotating mechanism 23 that can provide clockwise and counterclockwise rotation. It is composed of a limiting seat 21 and a brake pad 22 pivotally mounted. The clamping rotating mechanism 23 is connected to a bearing 301. The main shaft 20 passes through the limiting seat 21 and the brake pad 22, so that the clamping rotating mechanism 23 can be further connected to the clamping unit 40. A magnet 211 is also embedded on the surface of the limiting seat 21. The surfaces of the magnet 211 and the brake pad 22 are rough to increase friction. Specifically, sandpaper or a sanding layer can be added to the surface of the magnet 211 or the brake pad 22 to form a rough surface to increase friction. A limiting hole 221 is provided in the center of the aforementioned brake pad 22. The limiting hole 221 is roughly diamond-shaped and can be used to limit the brake pad 22 to a certain extent when it pivots.

[0045] Please see Figure 4 When the brake 121 is energized, the brake 121 is energized by the coil 123, and the brake pad 22 is magnetically attracted to the brake pad and is in a horizontally attached state, pressing the spring 42. At this time, the main shaft 20 is not stuck, so the main shaft 20 is driven by the power of the motor 12 and can move back and forth in a twisting and rotating motion, which in turn drives the clamping unit 40 to perform clamping, opening and closing operations, and can clamp or release objects.

[0046] Please see Figure 5 When the brake 121 is not energized, the brake pad 22 is pushed by the spring 42 and pressed against the magnet 211, which is tilted on one side and magnetically attracted to the magnet 211. It can be seen that the brake pad 22 will block the main shaft 20 on the other side, so that the main shaft 20 is restricted and cannot move. At this time, it can only drive the clamping rotation mechanism 23 to rotate synchronously and maintain the current clamping state of the clamping unit 40. This can also prevent the object from falling off when the drive source stops unexpectedly after clamping the object.

[0047] Please see again Figures 6-8 The aforementioned clamping unit 40 can be replaced by disassembly and replacement, with a structure having a general gripper, a short gripper, or a three-jaw gripper, allowing for convenient and quick replacement according to actual production needs.

[0048] The main innovation of this electric rotary mechanical clamp lies in its use of a braking and magnetic adsorption mechanism, allowing a single motor 12 to precisely control the clamping unit 40 in both clamping and rotation modes. When the brake 121 is energized, the brake pad 22 is magnetically attracted by the coil 123 and remains horizontally attached, pressing down the spring 42. In this state, the main shaft 20 can only move back and forth, thus controlling the opening and closing of the clamping unit 40. When the brake 121 is de-energized, the brake pad 22 is pushed by the spring 42, pressing against the spring and tilting to one side, magnetically attracting the magnet 211. This restricts the displacement of the main shaft 20, allowing it to only drive the clamping rotation mechanism 23 to rotate, while maintaining the current state of the clamping unit 40. This design not only prevents the clamped object from falling due to an unexpected stop of the drive source but also simplifies the complexity of the mechanism, reducing manufacturing costs and maintenance difficulty. Furthermore, by replacing different types of clamping units 40, it can flexibly meet diverse production needs, improving the efficiency, accuracy, and application flexibility of automated equipment.

Claims

1. An electric rotary mechanical clamp, comprising a motor (12) connected to a main shaft (20) and placed in a housing (11), wherein the front end of the motor (12) is connected to a brake (121), a spring (42) is fitted on the outside of the main shaft (20) and positioned at the center of the brake (121), and the rear end of the motor (12) is electrically connected to a control circuit (122) to cooperate with a bottom cover (13) to close; a rotary mechanism housing (30) is disposed at the front end of a drive unit (10); a clamping unit (40) is disposed at the front end of the rotary mechanism housing (30), and the clamping unit (40) is connected to an extension (41) via a connecting rod (411) and pivotally connected to one end of the main shaft (20), characterized in that: The rotating mechanism housing (30) and the brake (121) have a clamping rotating mechanism (23), which is composed of a limiting seat (21) that pivotally mounts a brake pad (22). The main shaft (20) passes through the limiting seat (21) and the brake pad (22), and a magnet (211) is also embedded on the surface of the limiting seat (21). When the brake (121) is energized, the brake (121) is energized by the coil (123), and the magnetic attraction causes the brake pad (22) to be in a horizontally attached state, pressing the spring (42). The main shaft... (20) can only move back and forth to drive the clamping unit (40) to clamp and place objects; when the brake (121) is not powered on, the brake pad (22) will push against the magnet (211) through the spring (42), and magnetically attract the magnet (211) with one side tilted. The brake pad (22) will block the main shaft (20) on the other side, so that the main shaft (20) is restricted and cannot move. It can only drive the clamping rotation mechanism (23) to rotate in a certain way and maintain the current clamping and placing state of the clamping unit (40).

2. The electric rotary mechanical clamp according to claim 1, characterized in that, The brake pad (22) also includes a limiting hole (221) located at the center of the brake pad (22), and the limiting hole (221) is designed in a diamond shape.

3. The electric rotary mechanical clamp according to claim 1, characterized in that, The motor (12) is a stepper motor or a servo motor.

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