Visual system of cutting machine

Abstract

A visual system of a cutting machine comprises a workbench and a portal frame which is arranged above the workbench and used for installing a cutting tool bit, an operation area for the cutting tool bit to move back and forth is formed on the workbench, a plurality of cameras which are arranged at intervals in the length direction are arranged on the portal frame, and in addition, an image processing module is further arranged, the plurality of cameras arranged at intervals are arranged right above the operation area, so that the camera shooting areas projected by the cameras are mutually spliced and can uniformly cover the whole operation area; therefore, the inclination angle generated by the camera in the shooting process from top to bottom is reduced, the picture distortion caused by the perspective phenomenon is avoided or reduced, the accuracy during the generation of the cutting tool path is greatly improved, in addition, the cutting tool path is directly projected to the corresponding operation area through the projector, and the production efficiency is improved. And a user can directly observe the cutting tool path, so that the advanced feeling of the machine and the experience feeling of the user are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of clothing production equipment, in particular to a visual system of a cutting machine. Background Art

[0002] The cutting machine is an automatic cutting device used in the textile and garment, leather, car seat and furniture industries. It mainly uses the setting data of computer-aided design to control the movement direction of the cutting knife to produce the required cutting pieces. The earliest cutting machines mainly cut according to the stored preset trajectory. The cutting efficiency is low and is easily affected by the material conveying accuracy. Therefore, some automatic cutting machines that can automatically generate tool path trajectories according to the scanned pattern appeared later.

[0003] For example, the Chinese invention patent application with application number 202110659593.2 (authorization announcement CN113352388A) discloses an "automatic cutting machine integrating feeding, scanning and cutting", which includes a feeding device, a linear scanning device and a cutting device. The feeding device is arranged at the feeding end of the cutting device to convey materials to the cutting device; the linear scanning device is arranged across the width direction of the cutting device to scan the material pattern and upload it to the control system, and the cutting device is used to cut the material along the scanned pattern. By the cooperation of the feeding device, the cutting device and the linear scanning device, the pattern information on the material is scanned during the material conveying process, and scanning is realized while the material is fed and uploaded to the control system, so that the cutting device can cut according to the scanned pattern. Dynamic scanning and dynamic cutting are performed without stopping the feeding, which reduces the start and stop of the machine, greatly improves the work efficiency, and solves the technical problem that traditional cutting is restricted by feeding accuracy.

[0004] However, this type of cutting machine still has some shortcomings: since the cutting operation area on the workbench is relatively large, the camera responsible for shooting and scanning will inevitably form a radiating fan-shaped illumination range in order to capture all the cutting operation areas during the top-down shooting process. Especially for the cutting operation area at the edge, its position relative to the camera will form a large inclination angle, resulting in a strong perspective phenomenon, causing distortion of the shooting picture, and ultimately affecting the accuracy of the cutting path.

[0005] Therefore, how to provide an automatic cutting machine that can minimize or avoid perspective in the captured image to improve the accuracy of tool path generation is an urgent problem that needs to be solved by those skilled in the art. Utility Model Content

[0006] The technical problem to be solved by the utility model is to provide a visual system of an automatic cutting machine which can reduce or avoid perspective phenomenon in a shooting picture so as to improve the accuracy of tool path generation in view of the above technical status.

[0007] The technical solution adopted by the utility model to solve the above technical problems is as follows: the visual system of the cutting machine includes a workbench and a gantry frame arranged above the workbench for installing a cutting head, the workbench is formed with an operating area for the cutting head to move back and forth, the gantry frame is provided with a plurality of cameras, each of the cameras is arranged at intervals along the length direction of the gantry frame, the camera areas projected by each of the cameras are spliced ​​with each other to evenly cover the entire operating area, and also includes an image processing module, the image processing module can analyze and process the images collected by each of the cameras and form a tool path for cutting by the cutting head, and the gantry frame is also provided with at least one projector that can project the tool path image to the operating area.

[0008] In order to better install the camera on the gantry, preferably, a bracket assembly is provided on the gantry, and the camera can move relative to the gantry to achieve position adjustment by connecting to the bracket assembly.

[0009] In order to optimize the overall structure of the bracket assembly so that it can better realize the position adjustment of the camera, preferably, the bracket assembly includes a first bracket and a second bracket, the first bracket is arranged on the gantry, the camera is arranged on the second bracket, the first bracket is also provided with a strip hole, the second bracket is connected to the first bracket by setting fasteners and can be guided and moved along the strip hole to complete the position adjustment of the camera.

[0010] In order to enable the camera to well capture the working area below when installed on the gantry, preferably, a plurality of installation cavities for installing the cameras are formed on the gantry, and the installation cavity is also provided with a through hole penetrating the bottom wall of the installation cavity. When the camera is in the installed state, the camera can pass through the through hole from top to bottom toward the corresponding working area.

[0011] In order to better install the projector on the gantry, preferably, the gantry is also provided with a mounting assembly, and the projector can move relative to the gantry to achieve position adjustment by connecting to the mounting assembly.

[0012] In order to optimize the overall structure of the mounting assembly so that it can better realize the position adjustment of the projector, preferably, the mounting assembly includes a first mounting seat, a second mounting seat and an adjusting rod, the first mounting seat is arranged on the gantry, the projector is arranged on the second mounting seat, the first mounting seat is provided with a first adjustment hole for the adjusting rod to pass through and adapt, the second mounting seat is provided with a second adjustment hole for the adjusting rod to pass through and adapt, and the distance between the first mounting seat and the second mounting seat is adjustable by connecting the adjusting rod.

[0013] In order to achieve the best image projected by the projector in the working area, preferably, two projectors are provided, and the two projectors are arranged at intervals along the length direction of the gantry and each projects the tool path image to the corresponding working area.

[0014] In order to ensure that the images captured by each camera can reach the best state after stitching, preferably, there are four cameras, and the four cameras are arranged at intervals along the length direction of the gantry and correspond to the top of the working area to reduce the perspective phenomenon generated by the camera during the shooting process.

[0015] Compared with the prior art, the advantages of the utility model are: by arranging multiple cameras arranged at intervals along the length direction on the gantry above the working area, and also by arranging an image processing module, the images collected by each camera are analyzed and processed to form a tool path for cutting by the cutting head; since multiple cameras arranged at intervals are arranged directly above the working area, the camera areas projected by each camera can evenly cover the entire working area after being spliced ​​together, thereby reducing the inclination angle of the camera during the top-down shooting process, thereby avoiding or reducing the image distortion caused by the perspective phenomenon, and greatly improving the generation accuracy of the cutting tool path; in addition, by arranging a projector to directly project the cutting tool path to the corresponding working area, the user can directly observe the cutting tool path, thereby improving the high-end sense of the machine and the user's experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the three-dimensional structure of this embodiment;

[0017] Figure 2 This is a schematic diagram of the exploded structure of the gantry, camera, and projector in this embodiment;

[0018] Figure 3 for Figure 2 Enlarged view of part A. DETAILED DESCRIPTION

[0019] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0020] like Figures 1 to 3 The visual system of the cutting machine in this embodiment mainly includes a workbench 1, a gantry 2, a camera 3 and a projector 4, etc.

[0021] refer to Figure 1 As shown, the gantry 2 is arranged above the workbench 1 for installing the cutting head, and an operating area 1a for the cutting head to move back and forth is formed on the workbench 1. A plurality of cameras 3 are arranged on the gantry 2, and each camera 3 is arranged at intervals along the length direction of the gantry 2. The camera areas projected by each camera 3 are spliced ​​with each other to evenly cover the entire operating area 1a. An image processing module is also included. The image processing module can analyze and process the images collected by each camera 3 and form a tool path for cutting by the cutting head. The gantry 2 is also provided with at least one projector 4 that can project the tool path image to the operating area 1a.

[0022] In order to better install the camera 3 on the gantry 1, refer to Figure 2 and Figure 3 As shown, in this embodiment, a bracket assembly 5 is specially provided on the gantry 2, and the camera 3 can be connected to the bracket assembly 5 so as to be able to move relative to the gantry 2 to achieve position adjustment.

[0023] Secondly, in order to optimize the overall structure of the bracket assembly 5 so that it can better achieve the position adjustment of the camera 3, refer to Figure 3 As shown, the bracket assembly 5 in this embodiment includes a first bracket 5a and a second bracket 5b. The first bracket 5a is arranged on the gantry 2, and the camera 3 is arranged on the second bracket 5b. The first bracket 5a is also provided with a strip hole 5a1. The second bracket 5b is connected to the first bracket 5a by setting a fastener 5c and can be guided and moved along the strip hole 5a1 to complete the position adjustment of the camera 3. When the camera 3 needs to be adjusted, the position adjustment of the camera 3 can be easily completed by loosening the fastener 5.

[0024] In addition, in order to enable the camera 3 to be installed on the gantry 2 so as to be able to well shoot the working area 1a below, as shown in reference frame 2, a plurality of installation cavities 2a for installing the cameras 3 are formed on the gantry 2 in this embodiment, and a through hole 2b penetrating the bottom wall of the installation cavity 2a is also provided in the installation cavity 2a. When the camera 3 is in the installed state, the camera 3 can pass through the through hole 2b from top to bottom toward the corresponding working area 1a.

[0025] In addition, in order to better install the projector 4 on the gantry 2, refer to Figure 2 As shown, a mounting assembly 6 is further provided on the gantry 2 in this embodiment, and the projector 4 can be moved relative to the gantry 2 to achieve position adjustment by being connected to the mounting assembly 6 .

[0026] At the same time, the overall structure of the mounting assembly 6 is optimized so that it can better realize the position adjustment of the projector 4. Figure 2 As shown, the mounting assembly 6 in this embodiment includes a first mounting seat 6a, a second mounting seat 6b and an adjusting rod 6c. The first mounting seat 6a is arranged on the gantry 2, and the projector 4 is arranged on the second mounting seat 6b. The first mounting seat 6a is provided with a first adjusting hole 6a1 for the adjusting rod 6c to pass through and adapt, and the second mounting seat 6b is provided with a second adjusting hole 6b1 for the adjusting rod 6c to pass through and adapt. The distance between the first mounting seat 6a and the second mounting seat 6b is adjustable by connecting the adjusting rod 6c.

[0027] In this embodiment, in order to achieve the best state of the image projected by the projector 4 in the working area 1a, two projectors 4 are provided, and the two projectors 4 are arranged at intervals along the length direction of the gantry 2 and each projects the tool path image to the corresponding working area 1a. The two projectors 4 divide the working area 1a into two areas, left and right, evenly. Because the working area 1a is generally rectangular, it is more suitable to be divided into two areas for projection adaptation.

[0028] In this embodiment, in order to make the pictures taken by each camera 3 reach the best state after splicing, reference Figure 1 As shown, there are four cameras 3, which are arranged at intervals along the length direction of the gantry 2 and correspond to the top of the working area. The arrangement of the four cameras 3 can better reduce the shooting angle of the camera, thereby reducing the perspective phenomenon generated by the camera 3 during the shooting process, and then more accurate images of the products to be cut can be collected, and the images summarized to the image processing module can also be more accurate.

[0029] It is necessary to explain here that in this embodiment, a plurality of cameras 3 arranged at intervals along the length direction are arranged on the gantry 2 above the working area 1a, and an image processing module is set to analyze and process the images collected by each camera 3, and a tool path for cutting by the cutting tool head is formed. Since a plurality of cameras 3 arranged at intervals are set just above the working area 1a, the camera areas projected by each camera 3 are spliced ​​together to evenly cover the entire working area 1a, thereby reducing the tilt angle generated by the camera 3 during the top-down shooting process, thereby avoiding or reducing the image distortion caused by the perspective phenomenon, and greatly improving the accuracy of the cutting tool path generation. In addition, a projector 4 is set to directly project the cutting tool path to the corresponding working area 1a, so that the user can directly observe the cutting tool path, thereby improving the high-end sense of the machine and the user's experience.

[0030] One more thing should be added. The cutting machine here is mainly suitable for cutting leather or cloth with printed patterns. Then the cutting knife needs to cut out the entire pattern along the edge of the pattern. At this time, the visual system in this embodiment is needed. The visual system captures the image of the pattern and automatically generates the cutting trajectory of the knife path. The CNC technology is used to make the knife head cut along the knife path trajectory. Therefore, the more realistic the image is, the more accurate the knife path trajectory will be.

[0031] It should be noted that in the description of this embodiment, the terms "front, rear", "left, right", "up, down", etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention. The terms "install", "connect", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

Claims

1. A visual system for a cutting machine, comprising a workbench (1) and a gantry (2) arranged above the workbench (1) for mounting a cutting head, wherein an operating area (1a) for the cutting head to move back and forth is formed on the workbench (1), and characterized in that: The gantry (2) is provided with a plurality of cameras (3), each of which is arranged at intervals along the length direction of the gantry (2), and the camera areas projected by each of the cameras (3) are spliced ​​together to evenly cover the entire working area (1a). An image processing module is also included, and the image processing module can analyze and process the images collected by each of the cameras (3) and form a tool path for cutting by a cutting tool head. The gantry (2) is also provided with at least one projector (4) capable of projecting a tool path image onto the working area (1a).

2. The visual system of a cutting machine according to claim 1, characterized in that: The gantry (2) is provided with a bracket assembly (5), and the camera (3) is connected to the bracket assembly (5) so as to be movable relative to the gantry (2) to achieve position adjustment.

3. The visual system of the cutting machine according to claim 2, characterized in that: The support assembly (5) comprises a first support (5a) and a second support (5b), wherein the first support (5a) is arranged on the gantry (2), and the camera (3) is arranged on the second support (5b), and the first support (5a) is also provided with a strip hole (5a1), and the second support (5b) is connected to the first support (5a) by arranging a fastener (5c) and can be guided and moved along the strip hole (5a1) to complete the position adjustment of the camera (3).

4. The visual system of a cutting machine according to claim 1, characterized in that: The gantry (2) is provided with a plurality of installation cavities (2a) for installing the cameras (3), and the installation cavities (2a) are also provided with through holes (2b) penetrating the bottom wall of the installation cavities (2a). When the cameras (3) are in an installed state, the cameras (3) can pass through the through holes (2b) from top to bottom and face the corresponding working area (1a).

5. The visual system of a cutting machine according to any one of claims 1 to 4, characterized in that: The gantry (2) is also provided with a mounting assembly (6), and the projector (4) can be moved relative to the gantry (2) to achieve position adjustment by being connected to the mounting assembly (6).

6. The visual system of a cutting machine according to claim 5, characterized in that: The mounting assembly (6) comprises a first mounting seat (6a), a second mounting seat (6b) and an adjusting rod (6c); the first mounting seat (6a) is arranged on the gantry (2); the projector (4) is arranged on the second mounting seat (6b); the first mounting seat (6a) is provided with a first adjusting hole (6a1) for the adjusting rod (6c) to pass through and adapt to; the second mounting seat (6b) is provided with a second adjusting hole (6b1) for the adjusting rod (6c) to pass through and adapt to; the first mounting seat (6a) and the second mounting seat (6b) are connected to each other by the adjusting rod (6c) so that the distance between them can be adjusted.

7. The visual system of a cutting machine according to claim 1, characterized in that: Two projectors (4) are provided, and the two projectors (4) are arranged at intervals along the length direction of the gantry (2) and each projects a tool path image onto a corresponding operation area (1a).

8. The visual system of a cutting machine according to claim 1, characterized in that: Four cameras (3) are provided, and the four cameras (3) are arranged at intervals along the length direction of the gantry (2) and correspond to the top of the working area (1a) so as to reduce the perspective phenomenon generated by the cameras (3) during the shooting process.

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