A new type of light guide arm cantilever lifting ring device

Abstract

This utility model relates to the field of laser processing equipment technology, specifically a novel cantilever suspension ring device for a light guide arm. It includes a suspension bracket, which is mounted on a robotic arm via a mounting base. A laser generator is also mounted on the mounting base, connected to the light guide arm. A suspension cable assembly is mounted on the suspension bracket. This utility model uses a limiting frame and guide wheels to restrict the lateral and vertical displacement of the wire rope, preventing it from falling off. A self-winding assembly utilizes a spiral spring to achieve self-winding of the wire rope, thus suspending the light guide arm. A power source and tension detection assembly enable autonomous adjustment of the preload, reducing tension fluctuations and maintenance costs. The power source's self-locking capability enables power-off self-locking, reducing adjustment power consumption.

Description

Technical Field

[0001] This utility model relates to the field of laser processing equipment technology, specifically a novel light guide arm cantilever lifting ring device. Background Technology

[0002] In the field of laser processing, the commonly used laser generator is the CO2 laser generator, which has a laser wavelength of 10.6 micrometers. It requires a rigid optical path, i.e., mirror-based transmission. When a robotic arm drives the cutting head to move, the optical guide arm moves along with the cutting head. During this process, the movements of the optical guide arm and the robotic arm interfere with each other, thus requiring a suspension mechanism to resolve the interference problem.

[0003] Traditional solutions typically use self-winding reels or counterweights in conjunction with wire ropes for suspension, maintaining constant wire rope tension. However, during high-frequency movements of the robotic arm, the wire rope can easily detach from the guide reels, causing the light guide arm to sag. Furthermore, prolonged load maintenance leads to plastic deformation of the wire rope, and fatigue of the spiral spring causes a decrease in tension, requiring regular maintenance and manual tension adjustment. The counterweight solution is only suitable for low-speed movements. During high-speed robotic arm movements, the counterweight's response delay is significant, and due to inertia, it can cause the light guide arm to vibrate. Utility Model Content

[0004] To overcome the shortcomings of existing suspension devices, such as slow tension adjustment response and the need for regular maintenance and adjustment, this utility model provides a novel light guide arm cantilever ring device.

[0005] The technical solution of this utility model is:

[0006] A novel light guide arm cantilever lifting ring device includes:

[0007] A suspension bracket is mounted on a robotic arm via a mounting base. The mounting base is also equipped with a laser generator, which is connected to a light guide arm. A suspension cable assembly is mounted on the suspension bracket.

[0008] The suspension cable assembly includes a housing, inside which a reel is rotatably mounted via a self-winding assembly. A steel wire rope is wound on the reel, and the head of the steel wire rope passes through the suspension bracket and connects to the light guide arm. The preload of the self-winding assembly is adjustable.

[0009] Preferably, the suspension bracket includes a column, a guide wheel frame is radially provided at the head of the column, the tail of the guide wheel frame is rotatably connected to the column, a wheel bracket is provided at the tail end of the guide wheel frame, and the outer shell is fixedly installed above the middle of the wheel bracket.

[0010] Preferably, a guide wheel is rotatably mounted on the inner top of the guide wheel frame, a limiting frame is provided above the guide wheel, and the wire rope is inserted into the guide wheel.

[0011] Preferably, the limiting frame is parallel to the axis of the guide wheel, and a gap of 0.5-1mm is left between the limiting frame and the guide wheel.

[0012] Preferably, the self-winding assembly includes a rotating shaft, which is connected to a reel via a spiral spring. The rotating shaft passes through the housing and is connected to a power source, which is used to drive the rotating shaft to rotate and adjust the preload of the spiral spring.

[0013] Preferably, the power source includes a motor and a worm gear reducer, wherein the worm gear reducer has a reduction ratio of at least 20:1 and has self-locking capability.

[0014] Preferably, a tension detection component is provided at the connection between the wire rope and the light guide arm. The tension detection component is used to detect the tension at the end of the rope, and the signal output end of the tension detection component is connected to the control end of the power source through a wire.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This invention uses a limiting frame and guide wheels to restrict the lateral and vertical displacement of the wire rope, preventing it from falling off. A self-winding assembly with a spiral spring enables the wire rope to wind itself, suspending the light guide arm. A power source and tension detection assembly allow for autonomous adjustment of the preload, reducing tension fluctuations and maintenance costs. The power source's self-locking capability enables power-off self-locking, minimizing adjustment power consumption. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the suspension bracket structure in this utility model;

[0019] Figure 3 for Figure 1 Enlarged schematic diagram of the structure at point A in the middle;

[0020] Figure 4 This is a schematic diagram of the suspension line assembly structure in this utility model;

[0021] Figure 5 This is an exploded view of the suspension line assembly structure in this utility model.

[0022] The meanings of the labels in the diagram are as follows:

[0023] 1. Suspension bracket; 11. Column; 12. Guide wheel frame; 13. Wire wheel bracket; 14. Guide wheel; 15. Limiting frame;

[0024] 2. Suspension cable assembly; 21. Spool; 22. Housing; 23. Rotating element; 24. Shaft; 25. Spiral spring; 26. Power source; 27. Wire rope; 28. Tension detection assembly;

[0025] 3. Robotic arm; 4. Mounting base; 5. Laser generator; 6. Light guide arm; 7. Cutting head. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Example 1:

[0028] Please see Figure 1-5 The present invention will describe the above technical solution in detail through the following embodiments:

[0029] A novel light guide arm cantilever lifting ring device includes:

[0030] The suspension bracket 1 is mounted on the robotic arm 3 via the mounting base 4. The mounting base 4 is also equipped with a laser generator 5, which is connected to a light guide arm 6. The suspension bracket 1 is also equipped with a suspension cable assembly 2.

[0031] Mounting base 4 is fixedly mounted on robotic arm 3 by bolts.

[0032] The laser generator 5 is used to generate laser light, the light guide arm 6 is used to transmit laser light, and the end of the light guide arm 6 is connected to the cutting head 7. The cutting head 7 is connected to the moving end of the robotic arm 3, and the robotic arm 3 is used to drive the cutting head 7 to move and complete the cutting action.

[0033] The suspension cable assembly 2 includes a housing 22, inside which a reel 21 is rotatably mounted via a self-winding assembly. A steel wire rope 27 is wound on the reel 21. The head of the steel wire rope 27 passes through the suspension bracket 1 and is connected to the light guide arm 6. The pretension of the self-winding assembly is adjustable.

[0034] The steel wire rope 27 uses steel strands with a diameter of 2mm and is covered with a polyurethane wear-resistant layer on the outside.

[0035] The suspension bracket 1 includes a column 11, a guide wheel frame 12 is radially provided at the head of the column 11, the tail of the guide wheel frame 12 is rotatably connected to the column 11, and a wheel support 13 is provided at the tail end of the guide wheel frame 12. The outer shell 22 is fixedly installed above the middle of the wheel support 13.

[0036] The guide wheel frame 12 and the head of the column 11 are connected by a bearing, and the guide wheel frame 12 and the wire wheel bracket 13 are fixedly connected by screws.

[0037] The housing 22 is fixed to the upper center of the reel bracket 13 by a bracket and screws. The housing 22 includes a shell and a cover plate, which are fixed together by screws.

[0038] The guide wheel frame 12 and the wire wheel bracket 13 are fixed relative to each other, and the guide wheel frame 12 and the wire wheel bracket 13 can rotate about the column 11 as the axis.

[0039] A guide wheel 14 is rotatably mounted on the inner side of the top of the guide wheel frame 12. A limit frame 15 is provided above the guide wheel 14, and the wire rope 27 is inserted into the guide wheel 14.

[0040] The guide wheel 14 is used to limit the radial horizontal movement of the wire rope 27, and the limit bracket 15 is used to limit the radial vertical movement of the wire rope 27 to prevent the wire rope 27 from disengaging from the guide wheel 14.

[0041] The limiting frame 15 is parallel to the axis of the guide wheel 14, and there is a gap of 0.5-1mm between the limiting frame 15 and the guide wheel 14.

[0042] A gap is reserved between the limit frame 15 and the guide wheel 14 to prevent the wire rope 27 from falling off without affecting the axial movement of the wire rope 27.

[0043] The self-winding assembly includes a shaft 24, which is connected to a reel 21 via a spiral spring 25. The shaft 24 passes through a housing 22 and is connected to a power source 26, which is used to drive the shaft 24 to rotate and adjust the preload of the spiral spring 25.

[0044] There is a rotating shaft 24 between the outer shell 22 and the reel 21, and the outer shell 22 is connected by a rotating element 23. The rotating element 23 can be a thrust bearing, which is used to limit the position of the reel 21 and the rotating shaft 24 and prevent them from moving axially.

[0045] The spool 21 is an I-beam spool, and the shaft 24 has a through hole that runs radially through the middle. The inner end of the spiral spring 25 is inserted into the through hole, and the outer end is inserted from the inside of the spool 21.

[0046] The spiral spring 25 is a constant tension spring used to provide tension to the wire rope 27 to balance the weight of the light guide arm 6.

[0047] The power source 26 includes a motor and a worm gear reducer, the worm gear reducer having a reduction ratio of at least 20:1 and having self-locking capability.

[0048] The output shaft of the motor is engaged with the input shaft of the worm gear reducer, and the output shaft of the worm gear reducer is engaged with the rotating shaft 24.

[0049] When the power source 26 is working, it can drive the rotating shaft 24 to rotate, thereby adjusting the preload of the spiral spring 25 and the wire rope 27.

[0050] When the cutting head 7 and the robotic arm 3 are not in operation, the wire rope 27 can be completely released to reduce the load on the spiral spring 25 and the wire rope 27, thereby extending their service life.

[0051] A tension detection component 28 is provided at the connection between the wire rope 27 and the light guide arm 6. The tension detection component 28 is used to detect the tension at the end of the rope. The signal output end of the tension detection component 28 is connected to the control end of the power source 26 through a wire.

[0052] The tension detection component 28 uses an S-shaped tension sensor to detect the tension at the end of the rope, providing a basis for the power source 26 to adjust the preload.

[0053] In this embodiment, when the tension detection component 28 detects a tension fluctuation exceeding 0.5N, it controls the power source 26 to work and adjusts the tension by driving the rotating shaft 24 to rotate.

[0054] After adjustment, power source 26 is de-energized and stops working, maintaining tension by utilizing the self-locking capability of the worm gear reducer.

[0055] Working principle:

[0056] The steel wire rope 27 passes through the guide wheel 14 and the limit frame 15, and is connected to the light guide arm 6 by the tension detection component 28. The light guide arm 6 is suspended by the tension of the spiral spring 25 itself.

[0057] During the process of the robotic arm 3 driving the cutting head 7 to move, the steel wire rope 27 always keeps the light guide arm 6 suspended to avoid the light guide arm 6 interfering with the movement of the robotic arm 3.

[0058] When the tension detection component 28 detects a tension fluctuation exceeding 0.5N, it controls the power source 26 to operate and adjust the tension by driving the rotating shaft 24 to rotate.

[0059] After adjustment, power source 26 is de-energized and stops working, maintaining tension by utilizing the self-locking capability of the worm gear reducer.

[0060] When the robotic arm 3 and the cutting head 7 need to be shut down for an extended period of time (meaning more than one hour), the power source 26 is activated to completely release the wire rope 27, reducing its tension to zero. This prevents plastic deformation caused by prolonged load and extends the service life of the wire rope 27 and the spiral spring 25.

[0061] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A novel light guide arm cantilevered pendant device, characterized by, include: A suspension bracket (1) is mounted on a robotic arm (3) via a mounting base (4). A laser generator (5) is also provided on the mounting base (4). The laser generator (5) is connected to a light guide arm (6). A suspension cable assembly (2) is installed on the suspension bracket (1). The suspension cable assembly (2) includes a housing (22), inside which a reel (21) is rotatably mounted via a self-winding assembly. A steel wire rope (27) is wound on the reel (21), and the head of the steel wire rope (27) passes through the suspension bracket (1) and is connected to the light guide arm (6). The preload of the self-winding assembly is adjustable.

2. A novel light guide arm pendant eye device as claimed in claim 1, characterized in that: The suspension bracket (1) includes a column (11), a guide wheel frame (12) is radially provided at the head of the column (11), the tail of the guide wheel frame (12) is rotatably connected to the column (11), and a wheel support (13) is provided at the tail end of the guide wheel frame (12). The outer shell (22) is fixedly installed above the middle part of the wheel support (13).

3. A novel light guide arm pendant eye device as claimed in claim 2, characterized in that: The guide wheel frame (12) has a guide wheel (14) rotatably mounted on the inner side of its top. A limit frame (15) is provided above the guide wheel (14). The wire rope (27) is inserted into the guide wheel (14).

4. A novel light guide arm pendant eye device as claimed in claim 3, characterized in that: The limiting frame (15) is parallel to the axis of the guide wheel (14), and there is a gap of 0.5-1mm between the limiting frame (15) and the guide wheel (14).

5. A novel light guide arm pendant eye device as claimed in claim 1, characterized in that: The self-winding assembly includes a rotating shaft (24), which is connected to a reel (21) via a spiral spring (25). The rotating shaft (24) passes through the outer shell (22) and is connected to a power source (26). The power source (26) is used to drive the rotating shaft (24) to rotate and adjust the preload of the spiral spring (25).

6. A novel light guide arm pendant eye ring device as claimed in claim 5, characterized in that: The power source (26) includes a motor and a worm gear reducer, wherein the worm gear reducer has a reduction ratio of at least 20:1 and has a self-locking capability.

7. A novel light guide arm pendant eye ring device as claimed in claim 5, wherein: A tension detection component (28) is provided at the connection between the wire rope (27) and the light guide arm (6). The tension detection component (28) is used to detect the tension at the end of the rope. The signal output end of the tension detection component (28) is connected to the control end of the power source (26) through a wire.

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