Mechanical arm structure of automatic plate cutting machine
By using multiple flat arms and balls in the circumferential direction to perform rolling friction in the mechanical arm structure of the automatic plate cutting machine, the problem of inaccurate cutting position caused by the lifting of metal plates during laser cutting is solved, and the processing accuracy is improved .
Patent Information
- Application Number
- CN202420905102.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-28
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-04-28
AI Technical Summary
For metal sheets with larger sizes and thin thicknesses, they may be slightly raised during laser cutting, resulting in inaccurate cutting position and affecting the accuracy of the workpiece.
Design a mechanical arm structure of an automatic plate cutting machine, using multiple flattening arms and balls arranged in the circumferential direction, flattening the plate through rolling friction to avoid driving the flattening arms to push the plate when the robot moves, affecting the processing accuracy.
The cutting position of the plate is effectively flattened, which improves the cutting accuracy and avoids the impact of the mechanical arm on the machining accuracy when it moves.
Smart Images
Figure CN222154304U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of cutting equipment, in particular to a mechanical arm structure of an automatic plate cutting machine. Background Art
[0002] The laser cutting machine includes a mechanical arm that can move along the X and Y axis directions. The laser cutting head is installed at the lower end of the mechanical arm and can cut metal plates.
[0003] For metal plates that are larger in size and thinner in thickness, when the metal plates are placed on the cutting machine, parts of the plates may be slightly lifted, resulting in inaccurate cutting positions, thereby affecting the accuracy of the workpiece after cutting. Utility Model Content
[0004] In order to overcome the shortcomings of the prior art, the purpose of the utility model is to provide a mechanical arm structure of an automatic plate cutting machine. When the laser cutting head is cutting, the cutting position of the plate is flattened by a plurality of circumferentially arranged flattening arms and a plurality of pressing points; the mechanical arm body drives the laser cutting head to move horizontally, and by setting a ball bearing, rolling friction is created between the flattening arm and the plate, so as to avoid the flattening arm pushing the plate when the mechanical arm body moves, thereby affecting the processing accuracy.
[0005] The technical solution adopted by the utility model is as follows:
[0006] A mechanical arm structure of an automatic plate cutting machine includes a mechanical arm body, a laser cutting head is installed at the lower end of the mechanical arm body, and also includes a plurality of flattening arms, each of the flattening arms is installed circumferentially around the laser cutting head on the outside of the mechanical arm body, a spherical groove is opened at the lower end of each of the flattening arms, a freely rotatable ball is installed in each of the spherical grooves, the ball extends out of the spherical groove, and when cutting the plate, the ball contacts the upper end surface of the plate.
[0007] Compared with the prior art, the beneficial effects of the present invention are:
[0008] When the laser cutting head is cutting, the cutting position of the plate is flattened by multiple flattening arms and multiple pressing points arranged circumferentially; the robotic arm body drives the laser cutting head to move horizontally, and by setting balls, rolling friction is created between the flattening arm and the plate, to prevent the flattening arm from pushing the plate when the robotic arm body moves, thereby affecting the processing accuracy.
[0009] As a preferred embodiment of the utility model, each of the flattening arms includes a cylinder, a sliding rod, a limiting ring and a mounting block. The cylinder is fixedly mounted on the outside of the mechanical arm body, the sliding rod is vertically slidably mounted in the cylinder and passes through the cylinder, the limiting ring is fixedly mounted on the sliding rod, a spring is vertically arranged between the limiting ring and the cylinder, the lower end of the sliding rod is fixedly mounted on the mounting block, and the ball is mounted in the mounting block.
[0010] Beneficial effect: For the non-floating flattening arm, the height position of the ball needs to be accurately set so that it can flatten the plate without causing damage. By setting a spring, the sliding rod can float, and the elasticity of the spring is used to flatten the plate. The ball can flatten within a certain height error range.
[0011] As a preferred embodiment of the utility model, the spring is a tension spring, the upper end of the sliding rod is provided with a thread, the limiting ring is screwed to the upper end of the sliding rod, and the two ends of the tension spring are respectively fixedly connected to the lower end surface of the limiting ring and the upper end surface of the cylinder.
[0012] Beneficial effect: The limiting ring is installed by thread and installed on the upper end of the sliding rod. Compared with welding, disassembly and assembly are simpler and more convenient.
[0013] As a preferred embodiment of the present invention, it further comprises a connecting plate, and the connecting plate is respectively fixedly connected to the plurality of limiting rings.
[0014] Beneficial effect: multiple limit rings are connected by a connecting plate, so that the multiple limit rings and the sliding rod move synchronously, so that the lowest points of multiple balls are located in the same horizontal plane, ensuring the flattening effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a structural schematic diagram of an embodiment of the mechanical arm structure of the automatic plate cutting machine of the utility model;
[0016] Figure 2 It is a cross-sectional view of a flattening arm in an embodiment of the mechanical arm structure of the automatic plate cutting machine of the utility model.
[0017] The reference numerals include: robot arm body 1, laser cutting head 2, flattening arm 3, ball 31, cylinder 32, sliding rod 33, limiting ring 34, mounting block 35, bolt 36, spring 37, plate 4, connecting plate 5. DETAILED DESCRIPTION
[0018] Typical embodiments that embody the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention can have various changes in different embodiments without departing from the scope of the present invention, and the descriptions and illustrations therein are essentially for illustrative purposes rather than for limiting the present invention.
[0019] In the description of the present application, the terms "first", "second", "one side", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the structure referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.
[0020] See also Figure 1 As shown, the present embodiment provides a mechanical arm structure of an automatic plate cutting machine, comprising a mechanical arm body 1, a laser cutting head 2 being installed at the lower end of the mechanical arm body 1, and a plurality of flattening arms 3, each of the flattening arms 3 being installed circumferentially around the laser cutting head 2 on the outer side of the mechanical arm body 1, a spherical groove being opened at the lower end of each of the flattening arms 3, a freely rotatable ball 31 being installed in each of the spherical grooves, the ball 31 extending out of the spherical groove, and contacting with the upper end surface of the plate 4 when cutting the plate 4; when the laser cutting head 2 is cutting, the cutting position of the plate 4 is flattened by the plurality of flattening arms 3 and the plurality of pressing points arranged circumferentially; the mechanical arm body 1 drives the laser cutting head 2 to translate, and by setting the ball 31, rolling friction is created between the flattening arm 3 and the plate 4, so as to avoid the mechanical arm body 1 moving and driving the flattening arm 3 to push the plate 4, thereby affecting the processing accuracy.
[0021] Among them, see Figure 2 As shown, each of the flattening arms 3 includes a cylinder 32, a sliding rod 33, a limiting ring 34 and a mounting block 35. The cylinder 32 is fixedly mounted on the outer side of the robot arm body 1, and the sliding rod 33 is vertically slidably mounted in the cylinder 32 and passes through the cylinder 32. The limiting ring 34 is fixedly mounted on the sliding rod 33. A spring 37 is vertically arranged between the limiting ring 34 and the cylinder 32. The lower end of the sliding rod 33 is fixedly mounted on the mounting block 35, and the ball 31 is installed in the mounting block 35. For the non-floating flattening arm 3, it is necessary to accurately set the height position of the ball 31 so that it can flatten the plate 4 without causing crushing. By setting the spring 37, the sliding rod 33 can float, and the elasticity of the spring 37 is used to flatten the plate 4. The ball 31 can flatten within a certain height error range.
[0022] In this embodiment, the spring 37 is a tension spring, the upper end of the sliding rod 33 is provided with a thread, the limiting ring is screwed on the upper end of the sliding rod 33, and the two ends of the tension spring are respectively fixedly connected to the lower end surface of the limiting ring 34 and the upper end surface of the cylinder 31; the mounting block 35 is composed of two blocks, the two blocks are symmetrically arranged, a first through hole is horizontally opened on the sliding rod 33, and corresponding second through holes are opened on the two blocks, the two blocks are symmetrically arranged about the sliding rod 33, the second through hole is connected to the first through hole, and is fixed with a bolt 36.
[0023] In other embodiments, the limiting ring 34 may be disposed between the cylinder 31 and the mounting block 35 , the spring 37 may be a compression spring, and the limiting ring 34 is connected to the sliding rod 33 by welding.
[0024] Among them, see Figure 1 As shown, it also includes a connecting plate 5, which is fixedly connected to multiple limit rings 34 respectively; the multiple limit rings 34 are connected by the connecting plate 5, so that the multiple limit rings 34 and the sliding rod 33 move synchronously, so that the lowest points of the multiple balls 31 are located in the same horizontal plane, ensuring the flattening effect.
[0025] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.
Claims
1. A mechanical arm structure of an automatic plate cutting machine, comprising a mechanical arm body, a laser cutting head is installed at the lower end of the mechanical arm body, and is characterized in that: It also includes multiple flattening arms, each of which is circumferentially installed on the outside of the robot arm body around the laser cutting head, and a spherical groove is opened at the lower end of each flattening arm. A freely rotatable ball is installed in each spherical groove. The ball extends out of the spherical groove. When cutting the plate, the ball contacts the upper end surface of the plate.
2. The mechanical arm structure of the automatic plate cutting machine according to claim 1 is characterized in that: Each of the flattening arms includes a cylinder, a sliding rod, a limiting ring and a mounting block. The cylinder is fixedly mounted on the outside of the mechanical arm body, the sliding rod is vertically slidably mounted in the cylinder and passes through the cylinder, the limiting ring is fixedly mounted on the sliding rod, a spring is vertically arranged between the limiting ring and the cylinder, the lower end of the sliding rod is fixedly mounted on the mounting block, and the ball bearing is mounted in the mounting block.
3. The mechanical arm structure of the automatic plate cutting machine according to claim 2 is characterized in that: The spring is a tension spring, the upper end of the sliding rod is provided with a thread, the limiting ring is screwed to the upper end of the sliding rod, and the two ends of the tension spring are respectively fixedly connected to the lower end surface of the limiting ring and the upper end surface of the cylinder.
4. The mechanical arm structure of the automatic plate cutting machine according to claim 2 is characterized in that: It also includes a connecting plate, which is fixedly connected to the plurality of limiting rings respectively.