A transfer positioner

Abstract

A kind of transfer positioner, including workbench, square carousel and rotating motor, square carousel is rotatably installed on workbench by rotating motor, and the top of four edges of square carousel is arrayed with a group of part support seat, and the left and right sides of workbench are each provided with a pair of detection parts for emitting switch, and rotating motor is respectively provided with inductive switch and inductive sheet for controlling the rotation angle of square carousel.The utility model has the advantages that: through four-way symmetrical station layout (90 ° × n rotation rule), space utilization can be greatly improved, the emitting switch, inductive switch and positioning cylinder cooperate, the square carousel can be effectively prevented from deviating during the process of mechanical hand grabbing, precise positioning can be realized, and workpiece switching response time is reduced.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, specifically to a medium-speed shifting stage. Background Technology

[0002] The intermediate rotation positioning table is a rotary positioning platform used in conjunction with a robotic arm for precise positioning and easy gripping. Existing intermediate rotation positioning tables have a simplistic layout, mostly featuring fixed single-sided or double-sided workstation designs. Workstation switching is time-consuming, relying on fixed timing control or manual triggering, with a single workstation switch typically taking >2 seconds (including robotic arm avoidance waiting time). The robotic arm idle rate is high, requiring it to wait for the platform to come to a complete stop before operating, resulting in an effective working time of <65%. The effective processing area utilization rate is only 30%-40%, limiting expansion capabilities. The fixed number of workstations cannot adapt to the flexible production needs of multiple product types. Low repeatability accuracy, relying on mechanical limiters, results in a repeatability error >±0.1mm, leading to a gripping failure rate >5%. Utility Model Content

[0003] The purpose of this utility model is to address the above-mentioned shortcomings by providing a transition stage.

[0004] This utility model includes a workbench, a square turntable, and a rotary motor. The square turntable is rotatably mounted on the workbench via the rotary motor. A set of part support seats are arranged on the top of each of the four sides of the square turntable. The left and right sides of the workbench are equipped with photoelectric switches for detecting parts. The rotary motor is equipped with a sensor switch and a sensor plate to control the rotation angle of the square turntable.

[0005] The bottom of the workbench is equipped with an oil receiving tray. The rotary motor is fixed to the oil receiving tray through a mounting base. The square turntable has upward-protruding edges around its perimeter and a set of perforated holes.

[0006] The workbench is square, and each of its four sides at the top is equipped with a universal ball joint that connects to the bottom of the square turntable.

[0007] The square turntable has a square reinforcing frame at the bottom, and a positioning cylinder is provided on one side of the housing of the rotary motor. The piston rod of the positioning cylinder is provided with a positioning plate that cooperates with the square reinforcing frame.

[0008] The positioning plate that contacts the square reinforcing frame has multiple horizontally penetrating grooves on one side.

[0009] The advantages of this utility model are: through the four-way symmetrical workstation layout (90°×n rotation rule), the space utilization rate can be greatly improved. With the cooperation of the photoelectric switch, the induction switch and the positioning cylinder, the square turntable can be effectively prevented from deviating during the robotic arm's gripping process, and precise positioning can be achieved, while reducing the workpiece switching response time. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model.

[0011] Figure 2 This is a schematic diagram of the structure of the present invention after the square turntable is hidden.

[0012] Figure 3 yes Figure 2 A partially enlarged structural diagram.

[0013] Figure 4 This is a schematic diagram of the rear structure of the square turntable.

[0014] Figure 5 This is a schematic diagram of the positioning cylinder structure. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0016] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0017] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0018] In the description of the embodiments of this invention, it should be noted that if terms such as "upper," "lower," "inner," or "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, they are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, if terms such as "first" or "second" appear in the description of this invention, they are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0019] In the description of the embodiments of the present invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention based on the specific circumstances.

[0020] As shown in the figure, this utility model includes a workbench 1, a square turntable 2, and a rotary motor 3. The square turntable 2 is rotatably mounted on the workbench 1 via the rotary motor 3. A set of part support seats 5 are arranged on the top of each of the four sides of the square turntable 2. The workbench 1 is provided with photoelectric switches 6 for detecting parts on both the left and right sides. The rotary motor 3 is provided with a sensor switch 7 and a sensor plate 8 for controlling the rotation angle of the square turntable 2.

[0021] Workpieces are sequentially placed on the support bases 5 of each part. The rotary motor 3, a servo motor, combined with a reducer, enables the square turntable 2 to rotate 90°. A photoelectric sensor 6 (detecting workpiece arrival) works in conjunction with an encoder (servo positioning feedback). A PLC (logic control) and a motion control card (robotic arm trajectory planning) achieve precise positioning and gripping. Workflow: Workpiece arrival detection: The photoelectric sensor 6 detects the workpiece entering the workstation, triggering a PLC signal. Servo rotation positioning: The PLC controls the servo motor to rotate to the next workstation (90° increments), and the encoder provides real-time position feedback, ensuring ±0.5° accuracy. Roboarm gripping: After rotation to the correct position, the PLC sends a signal to the robotic arm to execute the gripping-placement action (partially overlapping with the rotation action). Cyclic operation: The system continuously detects, rotates, and grips, forming a semi-closed-loop control.

[0022] The four corners of the square turntable 2 are chamfered to avoid interference with the photoelectric switch mounting base during rotation. Four part support seats 5 are evenly distributed along each of the four sides of the square turntable 2, with workpieces fixedly placed on each support seat 5. Photoelectric switches are installed at both ends of each side to detect whether workpieces are placed on each side. An inductive switch 7 and an inductive plate 8 are installed on the rotary motor 3. The inductive switch 7 is mounted on the housing of the rotary motor 3, and the inductive plate 8 is mounted on the rotating shaft component of the rotary motor 3. When the photoelectric switch detects no workpiece, a signal is transmitted to the system, and the square turntable 2 rotates under the drive of the rotary motor 3. The inductive switch 7 on the rotary motor 3 acts as a limit switch. When the inductive plate 8 is inserted into the inductive switch 7, the rotation stops, and the square turntable 2 reaches the designated position. The robotic arm then grasps and picks up the workpiece according to the previously set grasping coordinates. Once all the workpieces on one side have been grasped, the photoelectric switch stops detecting a signal. Square turntable 2 begins to rotate, aligning one side with the workpiece with the direction of the robotic arm. The other side, after the workpiece has been picked up, is then placed onto the workpiece by another robotic arm, preparing for the next pick-up.

[0023] Furthermore, the bottom of the workbench 1 is provided with an oil receiving tray 9, and the rotary motor 3 is fixed to the oil receiving tray 9 through the mounting base 10. The square turntable 2 is provided with upward protruding edges around its perimeter, and a set of hollow holes is provided on the square turntable 2.

[0024] During the processing of the workpiece, the oil stains carried by the workpiece drip into the oil receiving tray 9 through the hollow holes as the workpiece rotates with the square turntable 2. The edge can prevent the oil stains from being thrown out.

[0025] Preferably, the workbench 1 is a square table, and the top of each of the four sides of the square table is provided with universal balls 12 that connect with the bottom of the square turntable 2.

[0026] The omnidirectional ball 12 is used to support the bottom side of the square turntable 2, so that the robotic arm can avoid excessive pressure on one side of the square turntable 2 when grasping and placing, which would affect the accuracy of the horizontal plane of the square turntable 2.

[0027] Furthermore, the square turntable 2 has a square reinforcing frame 13 at its bottom, and a positioning cylinder 15 is provided on one side of the housing of the rotary motor 3. The piston rod of the positioning cylinder 15 is provided with a positioning plate 16 that cooperates with the square reinforcing frame 13.

[0028] The side of the square reinforcing frame 13 is parallel to the side of the square turntable 2. When the square turntable 2 rotates to a specified angle, the piston rod of the positioning cylinder 15 extends, and the positioning plate 16 abuts against the side of the square reinforcing frame 13 to fix the position of the square turntable 2. If the rotation angle of the square turntable 2 is not precise enough, the positioning plate 16 can also forcibly correct the orientation of the square turntable 2 during the process of abutting against the side of the square reinforcing frame 13.

[0029] Furthermore, the positioning plate 16, which contacts the square reinforcing frame 13, has multiple transversely penetrating grooves on one side. These grooves reduce the contact area between the positioning plate 16 and the square reinforcing frame 13, preventing the positioning plate 16 from adhering to the side of the square reinforcing frame 13, and making the retraction of the positioning plate 16 smoother.

Claims

1. A transition stage, characterized in that... It includes a workbench (1), a square turntable (2) and a rotary motor (3). The square turntable (2) is rotatably mounted on the workbench (1) via the rotary motor (3). A set of part support seats (5) are arranged on the top of each of the four sides of the square turntable (2). The workbench (1) is equipped with a photoelectric switch (6) for detecting parts on both the left and right sides. The rotary motor (3) is equipped with an induction switch (7) and an induction plate (8) to control the rotation angle of the square turntable (2).

2. A transition stage according to claim 1, characterized in that... The bottom of the workbench (1) is provided with an oil receiving tray (9), and the rotary motor (3) is fixed to the oil receiving tray (9) through the mounting base (10). The square turntable (2) has upward protruding edges around its perimeter, and a set of hollow holes is provided on the square turntable (2).

3. A transition stage according to claim 1, characterized in that... The workbench (1) is a square table, and the top of the four sides of the square table is provided with universal balls (12) that connect with the bottom of the square turntable (2).

4. A transition stage according to claim 1, characterized in that... The square turntable (2) has a square reinforcing frame (13) at the bottom. The housing of the rotary motor (3) has a positioning cylinder (15) on one side. The piston rod of the positioning cylinder (15) has a positioning plate (16) that cooperates with the square reinforcing frame (13).

5. A transition stage according to claim 4, characterized in that... The positioning plate (16) in contact with the square reinforcing frame (13) has multiple transverse through grooves on one side.

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