An automatic tracking arc placement machine

Abstract

This utility model relates to the field of production equipment technology, specifically to an automatic tracking arc-shaped placement machine, comprising: a frame, a main shaft at the top center of the frame, a receiving tray at the top of the main shaft, and a first stepper motor at the bottom of the frame connected to the main shaft; a feeding arm, mounted on the top of the frame via an electric slide and radially arranged along the receiving tray, with a material trough along its length at the top of the feeding arm, a feeding port at the end of the trough near the main shaft, a placement wheel below the feeding port on the feeding arm, and a suction groove circumferentially arranged on the placement wheel; and a second stepper motor for driving the placement wheel; and a controller, with the first stepper motor, electric slide, and second stepper motor electrically connected to the controller. This utility model achieves dynamic and precise product placement on a moving turntable through the synergistic effect of the mechanical structure and control system.

Description

Technical Field

[0001] This utility model relates to the field of production equipment technology, specifically to an automatic tracking arc-shaped placement machine. Background Technology

[0002] In automated production and inspection processes, the precise positioning and placement of products on a moving turntable has always been a key technological challenge. To improve production efficiency, products are typically required to be placed while the turntable is continuously rotating. However, due to the speed difference between the turntable's movement and the placement action, product position deviation is easily caused. To solve this problem, the product placement device needs to be able to perform synchronous circular arc motion along the turntable's trajectory while maintaining a consistent speed. Traditional solutions often use a dual-axis servo system in conjunction with a motion control module to achieve circular interpolation motion, but this approach has drawbacks such as high equipment cost (requiring two sets of servo motors and a complex control system) and complex system maintenance. Utility Model Content

[0003] This invention provides an automatic tracking arc-shaped placement machine, which achieves dynamic and precise placement of products on a moving turntable through the synergistic effect of mechanical structure and control system.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an automatic tracking arc-shaped placement machine, comprising: a frame, a main shaft at the top center of the frame, a receiving tray at the top of the main shaft, a first stepper motor at the bottom of the frame, and the first stepper motor connected to the main shaft; a feeding arm, the feeding arm being mounted on the top of the frame via an electric slide table and radially arranged along the receiving tray, a material trough along the length direction at the top of the feeding arm, a feeding port at one end of the material trough near the main shaft, a placement wheel below the feeding port on the feeding arm, a suction groove circumferentially provided on the placement wheel, and a second stepper motor for driving the placement wheel; and a controller, the first stepper motor, the electric slide table, and the second stepper motor being electrically connected to the controller.

[0005] Preferably, a control groove is provided at the center of the outer side of the placement wheel, and each of the suction grooves is provided with a negative pressure air passage communicating with the control groove. Each of the negative pressure air passages is provided with a release air passage communicating with the outside of the placement wheel. A control disk is provided at one end of the material feeding arm near the main shaft. The control disk blocks the release air passages on the upper part and both sides of the placement wheel. A control nozzle extending into the control groove is provided in the middle of the control disk. A suction air passage extending into the control nozzle is provided outside the control disk. A control air passage communicating with the suction air passage is provided on the top and both sides of the control nozzle. A negative pressure interface communicating with the suction air passage is provided outside the control disk.

[0006] Preferably, a photoelectric sensor is provided at the bottom of the control panel corresponding to the receiving tray, and the photoelectric sensor is electrically connected to the controller.

[0007] Preferably, a conveyor belt is provided on one side of the material trough, and a conveyor motor for driving the conveyor belt is provided at one end of the top of the feeding arm, and the conveyor motor is electrically connected to the controller.

[0008] Preferably, the electric slide includes a lead screw arranged parallel to the unloading arm, and a nut fixedly arranged on the top of the frame and threadedly engaged with the lead screw. The unloading arm is provided with a moving motor for driving the lead screw, and the moving motor is electrically connected to the controller.

[0009] The beneficial effects of this utility model are as follows: This automatic tracking arc-shaped placement machine achieves dynamic and precise product placement on a moving turntable through the coordinated action of its mechanical structure and control system. During operation, the first stepper motor drives the main shaft to rotate the receiving tray at a uniform speed, achieving the movement of a traditional turntable. The electric slide pushes the dispensing arm to move radially along the receiving tray. Simultaneously, the controller coordinates the speeds of the first stepper motor and the moving motor through an algorithm, ensuring that the linear velocity of the end of the dispensing arm matches the linear velocity of the edge of the receiving tray, achieving dynamic synchronization. The placement wheel is driven by a second stepper motor, and the rotational speed of its suction trough matches the angular velocity of the receiving tray, ensuring that there is no relative displacement between the product and the target position on the receiving tray when the product is released from the feeding port. During the part adsorption stage: the negative pressure interface provides negative pressure to the suction trough through the control nozzle. The product is fed into the suction trough from the feed trough via the conveyor belt and is adsorbed and fixed. During the release stage: when the suction trough rotates to directly below the feeding port, the release air passage blocked by the control disc is exposed, the negative pressure is interrupted, and the product falls into the preset position on the receiving tray due to gravity or inertia. Photoelectric sensors monitor the position of the receiving tray in real time and send feedback signals to the controller, dynamically adjusting the speeds of the first and second stepper motors to eliminate accumulated errors. This device simplifies the mechanical structure by using a single-axis driven turntable and electric slide for linear tracking, combined with the rotational synchronization of the placement wheels. Only the speed synchronization of the stepper motors needs to be coordinated, eliminating the need for complex circular interpolation algorithms in motion control modules. The linear motion of the unloading arm and the rotational motion of the placement wheels are superimposed, equivalent to a "virtual circular trajectory," ensuring no relative speed difference between the product and the turntable at the moment of product placement. The air duct shielding design of the control panel enables instantaneous switching between adsorption and release, preventing product slippage. Photoelectric sensor feedback enables closed-loop control, adapting to turntable speed fluctuations or mechanical transmission errors. Modules such as the conveyor belt and electric slide can be maintained independently, reducing system complexity. The turntable can complete placement without stopping, reducing production cycle time. The passive release mechanism of mechanical synchronization and negative pressure adsorption is more resistant to interference than purely electronic control. This technology, through mechanical innovation and low-cost control strategies, significantly reduces system cost and maintenance difficulty while ensuring placement accuracy, making it suitable for high-speed automated production lines. Attached Figure Description

[0010] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0012] Figure 2 This is a partial structural cross-sectional view of the present invention.

[0013] In the diagram: 1. Frame; 2. Main shaft; 3. Receiving tray; 4. First stepper motor; 5. Feeding arm; 6. Electric slide table; 7. Material trough; 8. Feeding port; 9. Placement wheel; 10. Suction groove; 11. Second stepper motor; 12. Control slot; 13. Negative pressure air duct; 14. Release air duct; 15. Control panel; 16. Control nozzle; 17. Suction air duct; 18. Control air duct; 19. Negative pressure interface; 20. Photoelectric sensor; 21. Conveyor belt; 22. Conveyor motor; 23. Lead screw; 24. Moving motor. Detailed Implementation

[0014] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0015] according to Figure 1 , Figure 2As shown, an automatic tracking arc-shaped placement machine includes: a frame 1, a main shaft 2 located at the top center of the frame 1, a receiving tray 3 located at the top of the main shaft 2, and a first stepper motor 4 located at the bottom of the frame 1, the first stepper motor 4 being connected to the main shaft 2; a feeding arm 5, the feeding arm 5 being mounted on the top of the frame 1 via an electric slide table 6 and radially arranged along the receiving tray 3, a material trough 7 located at the top of the feeding arm 5 along its length, a feeding port 8 located at one end of the material trough 7 near the main shaft 2, a placement wheel 9 located below the feeding port 8 on the feeding arm 5, a suction groove 10 located circumferentially on the placement wheel 9, and a second stepper motor 11 for driving the placement wheel 9, wherein the outer side of the placement wheel 9 is located at the center of the arc-shaped placement machine. A control groove 12 is provided in the center. Each of the suction grooves 10 is provided with a negative pressure air passage 13 communicating with the control groove 12. Each of the negative pressure air passages 13 is provided with a release air passage 14 communicating with the outside of the placement wheel 9. A control disk 15 is provided at one end of the material feeding arm 5 near the main shaft 2. The control disk 15 covers the release air passages 14 on the upper part and both sides of the placement wheel 9. A control nozzle 16 extending into the control groove 12 is provided in the middle of the control disk 15. A suction air passage 17 extending into the control nozzle 16 is provided on the outside of the control disk 15. A control air passage 18 communicating with the suction air passage 17 is provided on the top and both sides of the control nozzle 16. A negative pressure interface 19 communicating with the suction air passage 17 is provided on the outside of the control disk 15. A controller is provided. The first stepper motor 4, the electric slide 6, and the second stepper motor 11 are electrically connected to the controller. In addition, a photoelectric sensor 20 is provided at the bottom of the control panel 15 corresponding to the receiving tray 3, and the photoelectric sensor 20 is electrically connected to the controller. A conveyor belt 21 is provided on one side of the material trough 7, and a conveyor motor 22 for driving the conveyor belt 21 is provided at one end of the top of the unloading arm 5, and the conveyor motor 22 is electrically connected to the controller. The electric slide table 6 includes a lead screw 23 arranged parallel to the unloading arm 5, and a nut fixedly arranged on the top of the frame 1 and threadedly engaged with the lead screw 23. The unloading arm 5 is provided with a moving motor 24 for driving the lead screw 23, and the moving motor 24 is electrically connected to the controller.

[0016] This automatic tracking arc-shaped placement machine achieves dynamic and precise product placement on a rotating turntable through the coordinated action of its mechanical structure and control system. During operation, the first stepper motor 4 drives the main shaft 2, causing the receiving tray 3 to rotate at a uniform speed, achieving the movement of a traditional turntable. The electric slide 6 pushes the dispensing arm 5 radially along the receiving tray 3. Simultaneously, the controller coordinates the speeds of the first stepper motor 4 and the moving motor 24, ensuring that the linear velocity at the end of the dispensing arm 5 matches the linear velocity at the edge of the receiving tray 3, achieving dynamic synchronization. The placement wheel 9 is driven by the second stepper motor 11, and the rotational speed of its suction trough 7 matches the angular velocity of the receiving tray 3, ensuring no relative displacement between the product and the target position on the receiving tray 3 when the product is released from the feeding port 8. During the part adsorption stage: the negative pressure interface 19 provides negative pressure to the suction trough 7 through the control nozzle 16. The product is fed from the trough 7 via the conveyor belt 21 into the suction trough 7 and is then adsorbed and fixed. During the release phase: When the suction trough 7 rotates to directly below the feeding port 8, the release air passage 14, which was blocked by the control panel 15, is exposed, the negative pressure is interrupted, and the product falls into the preset position of the receiving tray 3 due to gravity. The photoelectric sensor 20 monitors the position of the receiving tray 3 in real time and feeds back the signal to the controller, dynamically adjusting the speed of the first stepper motor 4 and the second stepper motor 11 to eliminate accumulated errors. This device uses the main shaft to drive the receiving tray 3 and the electric slide table 6 to linearly track, and coordinates with the rotation synchronization of the placement wheel 9, simplifying the mechanical structure. Only the speed synchronization of the stepper motors needs to be coordinated, eliminating the need for the circular interpolation algorithm of the complex motion control module. The linear movement of the feeding arm 5 and the rotational movement of the placement wheel 9 are superimposed to ensure that there is no relative speed difference between the product and the turntable at the moment of product placement. The air passage blocking design of the control panel 15 realizes instantaneous switching between suction and release, avoiding product slippage and deviation. The feedback of the photoelectric sensor 20 realizes closed-loop control, adapting to speed fluctuations or mechanical transmission errors of the receiving tray 3. Modules such as the conveyor belt 21 and the electric slide table 6 can be maintained independently, reducing system complexity. The rotary table can dispense food without stopping, reducing production cycle time. The passive release mechanism, combining mechanical synchronization and negative pressure adsorption, is more resistant to interference than purely electronic control. Through mechanical innovation and low-cost control strategies, this technology significantly reduces system cost and maintenance complexity while ensuring dispensing accuracy, making it suitable for high-speed automated production lines.

[0017] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. An automatic tracking arc-shaped placement machine, characterized in that, include: A frame (1) is provided with a main shaft (2) at the top center of the frame (1), a receiving tray (3) is provided at the top of the main shaft (2), and a first stepper motor (4) is provided at the bottom of the frame (1), and the first stepper motor (4) is connected to the main shaft (2); The feeding arm (5) is set on the top of the frame (1) via an electric slide (6) and is radially arranged along the receiving tray (3). The top of the feeding arm (5) is provided with a material trough (7) along the length direction. The material trough (7) is provided with a feeding port (8) at one end near the main shaft (2). The feeding arm (5) is provided with a placement wheel (9) below the feeding port (8). The placement wheel (9) is provided with a suction groove (10) around its circumference. The feeding arm (5) is also provided with a second stepper motor (11) for driving the placement wheel (9). The controller is electrically connected to the first stepper motor (4), the electric slide (6) and the second stepper motor (11).

2. The automatic tracking arc placement machine of claim 1, wherein: A control groove (12) is provided in the center of the outer side of the placement wheel (9). Each of the suction grooves (10) is provided with a negative pressure air passage (13) communicating with the control groove (12). Each of the negative pressure air passages (13) is provided with a release air passage (14) communicating with the outside of the placement wheel (9). A control disk (15) is provided at one end of the discharge arm (5) near the main shaft (2). The control disk (15) blocks the release air from the upper part and sides of the placement wheel (9). The control disk (15) has an air vent (14) and a control nozzle (16) extending into the control slot (12) in the middle. The control disk (15) has a suction air duct (17) extending into the control nozzle (16) on the outside. The top and sides of the control nozzle (16) are respectively provided with control air ducts (18) communicating with the suction air duct (17). The control disk (15) has a negative pressure interface (19) communicating with the suction air duct (17) on the outside.

3. An automatic tracking arc placement machine according to claim 2, wherein: The bottom of the control panel (15) is provided with a photoelectric sensor (20) corresponding to the receiving tray (3), and the photoelectric sensor (20) is electrically connected to the controller.

4. The automatic tracking arc placement machine of claim 3, wherein: A conveyor belt (21) is provided on one side of the trough (7), and a conveyor motor (22) for driving the conveyor belt (21) is provided at one end of the top of the feeding arm (5). The conveyor motor (22) is electrically connected to the controller.

5. An automatic tracking arc placement machine as claimed in claim 4, wherein: The electric slide (6) includes a lead screw (23) arranged in parallel with the feeding arm (5) and a nut fixedly arranged on the top of the frame (1) and threadedly engaged with the lead screw (23). The feeding arm (5) is provided with a moving motor (24) for driving the lead screw (23), and the moving motor (24) is electrically connected to the controller.

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