Anti-collision double platform structure and laser cutting equipment with same

Abstract

The utility model relates to the field of laser cutting. More specifically, the utility model relates to an anti-collision double-platform structure and a laser cutting equipment with the same. The utility model provides an anti-collision structure and a laser cutting equipment with double workbenches, which sets the anti-collision structure on the laser cutting equipment with double workbenches, solves the collision problem between the workbenches when the laser processes workpieces, and realizes the anti-collision function through soft limiting, hard limiting and a buffer.

Description

Technical Field

[0001] This utility model relates to the field of laser cutting. More specifically, this utility model relates to a collision-resistant dual-platform structure and a laser cutting device having the same. Background Technology

[0002] In modern industrial production, laser cutting technology, with its advantages of high precision, high speed, and small heat-affected zone, is widely used in the cutting and processing of various materials, including metals and non-metals. However, with the accelerating pace of industrial production and increasingly stringent requirements for production efficiency, single-table laser cutting equipment requires loading and unloading operations to wait until the cutting process is complete, significantly reducing overall production efficiency. Furthermore, the frequent loading and unloading waiting times increase equipment downtime, leading to reduced production capacity.

[0003] To address the aforementioned issues, robotic arm laser cutting equipment based on a dual-worktable design has emerged. The dual-worktable design allows one worktable to perform laser cutting operations while the operator prepares workpieces for loading and unloading on the other, significantly improving production continuity and efficiency. Furthermore, dual-worktable robotic arm laser cutting equipment offers greater flexibility and adaptability. The worktables can be flexibly switched according to different production tasks and workpiece characteristics, enabling rapid cutting of workpieces of different specifications and shapes, providing enterprises with a more efficient and convenient production solution.

[0004] When a robotic arm laser cutting equipment uses a dual-worktable design, interference or even collisions may occur between the two worktables during the laser cutting process, thus affecting the normal operation of the robotic arm laser cutting equipment. Utility Model Content

[0005] The purpose of this utility model is to provide a collision-proof dual-platform structure and a laser cutting device with it. By setting a collision-proof structure on the laser cutting device with dual worktables, the collision problem between the worktables when the laser is processing the workpiece is solved. The collision-proof function is achieved by soft limit, hard limit and buffer components respectively.

[0006] To achieve these objectives and other advantages according to the present invention, a collision-resistant dual-platform structure is provided, comprising:

[0007] Linear drive mechanism;

[0008] Two worktables are respectively connected to the linear drive mechanism, and the linear drive mechanism drives the two worktables to move closer to or further away from each other.

[0009] A spacing detection component is disposed on the two worktables to obtain the distance between the two worktables;

[0010] A limit switch is disposed between the two worktables and connected to one of the worktables;

[0011] The controller is electrically connected to the drive mechanism of the two worktables, and the spacing detection component and the limit switch are respectively electrically connected to the controller.

[0012] Furthermore, in the aforementioned anti-collision dual-platform structure, the linear drive mechanism includes:

[0013] The slide rail is horizontally positioned.

[0014] Two track trolleys are slidably mounted on the strip rails;

[0015] Two worktables are connected to the two track trolleys respectively.

[0016] Furthermore, in the aforementioned anti-collision dual-platform structure, the spacing detection component includes two encoders, the track trolley is driven by a servo motor, and the encoders are coaxially mounted on the shaft of the servo motor.

[0017] Furthermore, in the aforementioned anti-collision dual-platform structure, the encoder is an absolute encoder.

[0018] Furthermore, the aforementioned collision-avoidance dual-platform structure also includes:

[0019] A stop block, which corresponds to the sensing part of the limit switch, is disposed on another workbench.

[0020] Furthermore, the aforementioned collision-avoidance dual-platform structure also includes:

[0021] Multiple buffers are provided at intervals at one end of each of the two worktables that are close to each other.

[0022] Furthermore, in the aforementioned anti-collision dual-platform structure, all the buffer components are rubber blocks.

[0023] Furthermore, in the aforementioned anti-collision dual-platform structure, the limit switch is mounted on the workbench via a bracket.

[0024] The present invention also provides a laser cutting device, including a device body and a collision-resistant dual-platform structure as described in any of the above claims.

[0025] Furthermore, in the aforementioned collision-avoidance dual-platform structure, the device body includes:

[0026] A gantry frame spans the linear drive mechanism;

[0027] A robotic arm, which is mounted on the gantry;

[0028] A laser cutting mechanism, which is connected to the robotic arm.

[0029] The beneficial effects of this utility model are:

[0030] When this novel anti-collision dual-platform structure is applied to a laser cutting machine with dual worktables, it combines soft and hard limiting mechanisms to more comprehensively and stably prevent collisions between the two worktables. This solves the problem of collisions between the worktables when they move simultaneously, reduces the risk of damage to cutting equipment components, improves the stability of the laser cutting equipment during operation, and significantly enhances processing efficiency and service life. It also maximizes the utilization rate of the robotic arm and increases workpiece output.

[0031] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the structure of the dual-worktable laser cutting equipment described in this utility model;

[0033] Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0034] The reference numerals in the attached figures are as follows:

[0035] Limit switch 1; workpiece 2; impact block 3; bracket 4; buffer 5; gantry 6; robot arm 7; strip slide rail 8; worktable 9; track trolley 10; servo motor 11. Detailed Implementation

[0036] The present invention will be further described in detail below with reference to the embodiments, so that those skilled in the art can implement it based on the description.

[0037] It should be noted that in the description of this utility model, the terms "horizontal", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0038] An embodiment of this utility model provides a collision-resistant dual-platform structure, comprising:

[0039] Linear drive mechanism;

[0040] Two worktables are respectively connected to the linear drive mechanism, and the linear drive mechanism drives the two worktables to move closer to or further away from each other.

[0041] A spacing detection component is disposed on the two worktables to obtain the distance between the two worktables;

[0042] A limit switch is disposed between the two worktables and connected to one of the worktables;

[0043] The controller is electrically connected to the drive mechanism of the two worktables, and the spacing detection component and the limit switch are respectively electrically connected to the controller.

[0044] The linear drive mechanism includes:

[0045] The slide rail is horizontally positioned.

[0046] Two track trolleys are slidably mounted on the strip rails;

[0047] Two worktables are connected to the two track trolleys respectively.

[0048] The spacing detection component includes two encoders, and the track trolley is driven by a servo motor. The encoders are coaxially mounted on the shaft of the servo motor.

[0049] The encoder is an absolute encoder.

[0050] This also includes:

[0051] A stop block, which corresponds to the sensing part of the limit switch, is disposed on another workbench.

[0052] This also includes:

[0053] Multiple buffers are provided at intervals at one end of each of the two worktables that are close to each other.

[0054] The buffer components are all rubber blocks.

[0055] The limit switch is mounted on the workbench via a bracket.

[0056] like Figures 1-2 As shown, an embodiment of this utility model provides a laser cutting device with dual worktables, including a device body and a collision-resistant dual-platform structure;

[0057] The device body includes:

[0058] Gantry 6;

[0059] Robotic arm 7, which is mounted on the gantry 6;

[0060] A laser cutting mechanism, which is connected to the robotic arm 7;

[0061] The dual-platform structure includes:

[0062] A strip rail 8 passes through the gantry frame 6;

[0063] Two worktables 9 are slidably mounted on the strip rails 8 via trolleys 10, which are driven by servo motors 11.

[0064] The spacing detection component includes two absolute encoders, which are coaxially mounted on the shafts of the servo motors 11 of the two track carriages 10.

[0065] Limit switch 1 is disposed between two worktables 9 and connected to one of the worktables 9;

[0066] The controller is electrically connected to the drive mechanism of the two worktables 9 of the laser cutting equipment, and the absolute encoder and the limit switch 1 are respectively electrically connected to the controller.

[0067] In this embodiment, the workpiece 2 is placed on the processing table, and the worktable 9 is moved by the track trolley 10 to move the workpiece 2 under the gantry 6. The robotic arm 7 moves the laser cutting mechanism to process the workpiece 2. To address the collision problem between the worktables 9, an anti-collision structure is set up. The anti-collision structure can achieve the anti-collision function through soft limiting and hard limiting respectively. Specifically:

[0068] For soft-limiting, each worktable 9 is driven by a servo motor 11 below it, and both worktables 9 can move independently on the strip rail 8. An absolute encoder converts the rotational motion of the servo motor 11 shaft into digital pulse signals. For an absolute encoder, each rotational position of the servo motor 11 shaft is assigned a unique digital code. Regardless of the state of the servo motor 11 shaft, the absolute position of the servo motor 11 shaft can be immediately determined by reading the absolute encoder value. When the worktable 9 moves, the servo motor 11 shaft rotates, and the absolute encoder generates a corresponding pulse signal. Based on the resolution of the absolute encoder (i.e., the number of pulses generated per certain angle of rotation of the servo motor 11 shaft) and the transmission ratio between the servo motor 11 and the worktable 9, the position of the worktable 9 can be accurately calculated. For example, assuming the absolute encoder has a resolution of 1000 pulses / revolution and the transmission ratio between the servo motor 11 and the worktable 9 is 1:10, if the absolute encoder generates 5000 pulses, then the worktable 9 will move 5000 / 1000 × 10 = 50 units. By monitoring the absolute encoder pulse counts of the two worktables 9 in real time, the controller can keep track of their current positions. Based on the equipment's structure and operational requirements, a safe distance range between the two worktables 9 is set in the controller. This safe distance is determined based on factors such as the size of the worktables 9, their machining accuracy, and the equipment's operating characteristics. The distance between the two worktables 9 is calculated in real time using the position information fed back from the absolute encoder. When the distance between the two worktables 9 is less than the safe distance, the controller determines that there is a risk of collision and first issues a deceleration command to the relevant servo motor 11. By adjusting the control signal of the servo motor 11, the output torque of the servo motor 11 is reduced, causing the moving speed of the worktable 9 to gradually decrease until it stops.

[0069] For hard limit switches, limit switch 1 is used. Limit switch 1 is installed on one of the worktables 9 and located between the two worktables 9. The specific position is determined according to the safety distance between the two worktables 9. A stop block 3 corresponding to the sensing part of limit switch 1 is set on the other worktable 9.

[0070] When the two worktables 9 move close to the area where a collision might occur, the collision block 3 will touch the sensing part of the limit switch 1. When the sensing part of the limit switch 1 is triggered, the contacts change state, and the limit switch 1 immediately sends an electrical signal, which is transmitted to the controller. The controller, which can be a PLC controller, is responsible for receiving various input signals and processing them according to the preset program logic. At this time, the controller will quickly issue an emergency stop signal. This emergency stop signal will be transmitted to the servo motor 11 of the worktable 9, which will immediately stop supplying power to the servo motor 11 or apply braking measures, causing the servo motor 11 to stop running quickly, thereby stopping the worktable 9 from moving. In this way, the worktables 9 can be stopped at the moment they are about to collide, avoiding a collision. As a mechanical device, the limit switch 1 has high reliability. It does not rely on complex electronic components or software algorithms; as long as the mechanical structure is normal, it can accurately trigger the signal. In the entire anti-collision system, the limit switch 1 is usually used as a hard control method, combined with soft control, to play a dual protection role. Even if the soft control part fails, the limit switch 1 can still be triggered at a critical moment to prevent the worktables 9 from colliding.

[0071] Preferably, as another embodiment of the present invention, it further includes:

[0072] Multiple buffers 5 are provided at intervals on one end of the two worktables 9 that are close to each other. The buffers 5 are rubber blocks.

[0073] In this embodiment, buffer elements 5 are installed at the ends of the two worktables 9 that are close to each other. These buffer elements can be made of rubber blocks with moderate hardness (Shore hardness 50-70) and good elastic recovery. If polyurethane buffer elements 5 are used, those with good wear resistance and impact resistance can be selected. Alternatively, depending on the structure of the worktable and the areas prone to collision, buffer elements 5 can be evenly installed around the perimeter of the worktable 9, especially on the side closest to the moving path of the gantry 6. This ensures that in the event of a collision, the buffer elements 5 on each worktable 9 can effectively contact each other, preventing direct collision between the two worktables 9.

[0074] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and embodiments shown and described herein.

Claims

1. A collision-resistant dual-platform structure, characterized in that, include: Linear drive mechanism; Two worktables are respectively connected to the linear drive mechanism, and the linear drive mechanism drives the two worktables to move closer to or further away from each other. A spacing detection component is disposed on the two worktables to obtain the distance between the two worktables; A limit switch is disposed between the two worktables and connected to one of the worktables; The controller is electrically connected to the drive mechanism of the two worktables, and the spacing detection component and the limit switch are respectively electrically connected to the controller.

2. The anti-collision dual-platform structure as described in claim 1, characterized in that, The linear drive mechanism includes: The slide rail is horizontally positioned. Two track trolleys are slidably mounted on the strip rails; Two worktables are connected to the two track trolleys respectively.

3. The anti-collision dual-platform structure as described in claim 2, characterized in that, The spacing detection component includes two encoders. The track trolley is driven by a servo motor, and the encoders are coaxially mounted on the shaft of the servo motor.

4. The anti-collision dual-platform structure as described in claim 3, characterized in that, The encoder is an absolute encoder.

5. The anti-collision dual-platform structure as described in claim 1, characterized in that, Also includes: A stop block, which corresponds to the sensing part of the limit switch, is disposed on another workbench.

6. The anti-collision dual-platform structure as described in claim 1, characterized in that, Also includes: Multiple buffers are provided at intervals at one end of each of the two worktables that are close to each other.

7. The anti-collision dual-platform structure as described in claim 6, characterized in that, All the buffer components are rubber blocks.

8. The anti-collision dual-platform structure as described in claim 1, characterized in that, The limit switch is mounted on the workbench via a bracket.

9. A laser cutting device, characterized in that, It includes the device body and the collision-resistant dual-platform structure as described in any one of claims 1-8.

10. A laser cutting device as described in claim 9, characterized in that, The device body includes: A gantry frame spans the linear drive mechanism; A robotic arm, which is mounted on the gantry; A laser cutting mechanism, which is connected to the robotic arm.

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