Visual inspection device integrated on five-axis laser cutting machine

Abstract

The utility model discloses a visual inspection device integrated on a five-axis laser cutting machine, which comprises a support, a transverse moving mechanism, a mechanical arm and a visual module, the support is arranged on the outer side of a shield of the five-axis laser cutting machine, the top of the support comprises a chute and a rack, and the chute and the rack extend along a first direction; the transverse moving mechanism arranged at the top of the support comprises a servo motor, a gear and a sliding block, the gear can be driven by the servo motor to rotate, the gear is in meshed connection with the rack, the sliding block is arranged on one side of the servo motor and clamped in the sliding groove, one end of the mechanical arm is fixedly connected with the servo motor through a fixing plate, and the other end of the mechanical arm is fixedly connected with the rack. The visual module is fixedly arranged on a flange plate at the tail end of the mechanical arm so that the servo motor can drive the visual module to reciprocate in the first direction. Through the structure of the utility model, the detection of cut pieces with various sizes can be efficiently realized through the movable mechanical arm and the visual module.

Description

Technical Field

[0001] The utility model relates to a visual detection device integrated on a five-axis laser cutting machine, belonging to the technical field of cutting machines. Background Art

[0002] The description in this section merely provides background information related to the disclosure of the present utility model and does not constitute prior art.

[0003] The five-axis laser cutting machine is an advanced CNC (computer numerical control) manufacturing process that involves moving the laser head along five axes around the workpiece to cut and shape the material from different angles. This technology is widely used in many fields, including the automotive industry, mold industry, military and aerospace industry, household appliances industry, and special-shaped pipe cutting.

[0004] In the processing field that requires the use of five-axis laser cutting machines, the requirements for processing accuracy and quality are generally relatively high. However, in the laser cutting process, due to the unstable strength of the parts to be cut, as well as the aging of parts or untimely maintenance, it is inevitable that some parts will not be cut through after cutting, or even some parts will be missed, or there will be a lot of waste left after cutting, which makes it difficult to meet the yield rate requirements.

[0005] Therefore, it is often necessary to inspect the cut pieces after cutting. The existing inspection methods generally include using the sensor of the cutting machine itself to determine whether the waste on the hole has fallen after the hole cutting action is completed. However, this method will sacrifice the efficiency of the laser cutting machine, and the economic efficiency is very poor. In addition, only a few five-axis laser cutting manufacturers can provide this function. Another detection method is to make a leak hole inspection fixture and place it next to the cutting machine. Each cut piece after laser cutting is automatically or manually placed on the inspection fixture to determine whether there is waste on the hole. However, this method requires that each part needs to make a special inspection fixture. The inspection fixture has high investment cost and occupies a large area. In addition, it is difficult for the inspection fixture to retain data, which is not conducive to tracing false alarms, missed detection and other information. And the simplest method is to add multiple people to check offline whether the hole waste on the part has fallen and record the judgment results with a marker. Manual judgment is prone to fatigue and missed inspection, and it can usually only be used as an emergency treatment method. In other words, it is generally difficult for existing inspection mechanisms to realize real-time inspection of cut pieces, with low efficiency or high cost. At the same time, due to the different sizes of the cut pieces to be cut, it is difficult to achieve comprehensive and efficient inspection of cut pieces of various sizes.

[0006] Currently, there is no visual inspection device integrated on a five-axis laser cutting machine that can solve the above problems. Utility Model Content

[0007] The purpose of the utility model is to provide a visual inspection device integrated on a five-axis laser cutting machine, which can efficiently detect cutting pieces of various sizes through a movable mechanical arm and a visual module.

[0008] The utility model discloses a visual inspection device integrated on a five-axis laser cutting machine, which is integrated on one side of the five-axis laser cutting machine. The five-axis laser cutting machine comprises a shield, a cutter and a turntable. The cutter is arranged inside the shield. The shield comprises an opening. The turntable can reciprocate between the position of the cutter and the outside of the opening. The visual inspection device integrated on the five-axis laser cutting machine comprises:

[0009] A bracket, a lateral movement mechanism, a robotic arm and a vision module, wherein the bracket is arranged on the outside of the shield of the five-axis laser cutting machine, the top of the bracket includes a slide groove and a rack, and the slide groove and the rack extend along a first direction; the lateral movement mechanism is arranged on the top of the bracket, and the lateral movement mechanism includes a servo motor, a gear and a slider, the gear can rotate under the drive of the servo motor, the gear is meshed with the rack, the slider is arranged on one side of the servo motor, and the slider is clamped in the slide groove, one end of the robotic arm is fixedly connected to the servo motor through a fixing plate, and the vision module is fixedly arranged on the flange at the end of the robotic arm, so that the servo motor can drive the vision module to reciprocate along the first direction.

[0010] Furthermore, it also includes a fill light, which is ring-shaped and fixedly arranged on the periphery of the visual module, and the direction of the fill light is consistent with the direction of the visual module.

[0011] Further, the bracket is arranged outside a side of the shield including the opening.

[0012] Furthermore, when the table top is rotated to the outermost side of the shield, the table top is located directly below the bracket.

[0013] Furthermore, the lengths of the slide groove and the rack are greater than the length of the table top.

[0014] Furthermore, it also includes a PLC module and a buzzer, and the PLC module is electrically connected to the visual module and the buzzer respectively.

[0015] When the table is rotated to the outermost side of the shield, the table is located directly below the bracket. By means of the above technical solution, the beneficial effects of the utility model are as follows:

[0016] The utility model is a visual inspection device integrated on a five-axis laser cutting machine. When the turntable drives the cutting piece to rotate, the lateral moving mechanism arranged on the bracket drives the mechanical arm and the visual module to move back and forth along the top of the bracket according to the preset points, so that the visual module used for inspection can cover most of the cutting pieces of different sizes, and the cutting pieces can be inspected in real time. It has a wider range of applications and is faster than manual inspection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of this specification or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this specification. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 is a front view of a visual inspection device integrated on a five-axis laser cutting machine provided in an embodiment of this specification;

[0019] Figure 2 is a side view of a visual inspection device integrated on a five-axis laser cutting machine provided in an embodiment of this specification;

[0020] In the figure: 1. cutting mechanism; 11. protective cover; 111. opening; 12. turntable; 121. base; 122. table; 21. bracket; 211. rack; 22. lateral moving mechanism; 221. servo motor; 222. gear; 23. robotic arm; 24. vision module; 25. fill light. DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand the technical solutions in this specification, the technical solutions in the embodiments of this specification will be clearly and completely described below in conjunction with the drawings in the embodiments of this specification. Obviously, the described embodiments are only part of the embodiments of this specification, not all of the embodiments. Based on the embodiments in this specification, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of this specification.

[0022] In the description of the present utility model, it should be noted that the terms "upper", "middle", "lower", "inner", "outer", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or component 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 utility model. The terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance. 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. The following describes the implementation method of the present utility model based on its overall structure.

[0023] See also Figure 1-2 , is a visual inspection device integrated on a five-axis laser cutting machine of this embodiment, which is integrated on one side of a five-axis laser cutting machine 1. The five-axis laser cutting machine 1 includes a shield 11, a cutter and a turntable 12. The cutter is arranged inside the shield 11. The shield 11 includes an opening 111. The turntable 12 can reciprocate between the position of the cutter and the outside of the opening 111. The visual inspection device integrated on the five-axis laser cutting machine includes:

[0024] A bracket 21, a lateral moving mechanism 22, a mechanical arm 23 and a visual module 24, wherein the bracket 21 is arranged on the outside of the protective cover 11, and the top of the bracket 21 includes a slide groove and a rack 211, and the slide groove and the rack 221 extend along a first direction; the lateral moving mechanism 22 is arranged on the top of the bracket 21, and the lateral moving mechanism 22 includes a servo motor 221, a gear 222 and a slider, and the gear 222 can rotate under the drive of the servo motor 221, and the gear 222 is meshed and connected with the rack 221, and the slider is arranged on one side of the servo motor 221, and the slider is clamped in the slide groove, one end of the mechanical arm 23 is fixedly connected to the servo motor 221 through a fixing plate, and the visual module 24 is fixedly arranged on the flange at the end of the mechanical arm 23, so that the servo motor 221 can drive the visual module 221 to reciprocate along the first direction.

[0025] Specifically, Figure 1-2 As shown, the existing turntable 12 also includes a base 121, a table 122 and a rotating shaft. The table 122 is arranged at one end of the base 121, and the rotating shaft passes through the middle position of the base 121, so that the base 121 can drive the table 122 to rotate around the rotating shaft and enter and exit the shield 11 through the opening 111;

[0026] Through the above structure, when in use, the staff only needs to place the cutting piece to be processed on one of the tables 122 of the five-axis laser cutting machine 1, and then, under the intervention of the external driving mechanism, the base 121 drives the table 122 to rotate around the rotation axis, so that the cutting piece to be processed can be rotated to a position near the cutter in the shield 11, so that the cutter can further start processing the cutting piece. After the processing is completed, the base 121 drives the table 122 to rotate around the rotation axis again, and the table 122 is rotated out through the opening 111 of the shield 11 until the table 122 rotates to the vicinity of the visual module 24, and then the table 122 stops rotating, and enters the detection program in which the visual module 24 intervenes. The servo motor 221 drives the gear 222 to rotate, so that the gear 222 is displaced on the rack 211 engaged with the gear 222. At this time, since the servo motor 221 is mounted on the slide groove at the top of the bracket 21 through a slider, and the slider, the slide groove, the gear 222 and the rack 211 are in the same direction, the servo motor 221 is displaced along the slide groove direction. That is to say, the robotic arm 23 fixed at one end of the servo motor 221 and the visual module 24 fixed at one end of the robotic arm 23 can be displaced along the slide groove direction under the drive of the servo motor 221. Specifically, the visual module 24 stops and collects images after it moves to a position where it can obtain the specified area of ​​the cutting piece, and uploads the image to the PLC module for analysis. If the image captured by the visual module 24 is found to be abnormal after being compared with the size and color depth of the preset image, the cut piece cut by the cutter in the above step does not meet the preset requirements, and the five-axis laser cutting machine 1 stops running until the staff intervenes. After the cut piece that does not meet the preset requirements is processed, the five-axis laser cutting machine 1 resumes the cycle operation. If the image captured by the visual module 24 is not found to be abnormal after being compared with the size and color depth of the preset image, the above-mentioned detection part of the cut piece cut by the cutter in the above step meets the preset requirements, the servo motor 221 continues to run and facilitates the visual module 24 to detect the next detection part of the cut piece to be detected, or all detections are completed, the lateral moving mechanism 22 returns to its position, the turntable 12 rotates to the initial position, and continues the next cycle of detection.

[0027] At the same time, in this embodiment, a PLC module and a buzzer are also included. The PLC module is electrically connected to the visual module 24 and the buzzer respectively, so that in the above process, the visual module 24 transmits image information to the PLC module. When the PLC module finds a cutting piece that does not meet the preset requirements, it can also drive the buzzer to sound synchronously to remind the staff to deal with the problematic cutting piece in time to avoid affecting the processing rhythm.

[0028] In the above process, since the detection process is driven by the lateral moving mechanism 22 to move the robot arm 23 and the visual module 24 according to the preset area, the problem of being unable to complete image acquisition due to the travel limit of the robot arm 23 itself when detecting oversized cut pieces is avoided. The degree of automation is high, which significantly saves manpower. At the same time, the visual detection solution is simple and easy to implement. The turntable 12 that rotates around the axis of rotation can achieve the process of detection without affecting the processing operation on one side of the cutter, thereby improving the processing efficiency. The visual solution in this embodiment has a wide range of applications and can meet the flexible detection of plate materials.

[0029] Furthermore, when the table 122 rotates to the outermost side of the shield 11, the table 122 is located directly below the bracket 21, and when the table 122 rotates to the innermost side of the shield 11, the table 122 is located directly below the cutter. In other words, the length of the base 121 in the turntable 12 can satisfy the matching length distance along the radial direction of rotation of the rotating table 122, so that the cutter in the shield 11 and the robot arm 23 outside the shield 11 can cover all the workpieces to be processed within a limited stroke.

[0030] In another preferred embodiment, a table 122 is respectively provided at both ends of the base 121, that is, the base 121 is configured as a long straight plate as a whole, and a table 122 extending perpendicular to the direction of the base 121 is provided at both ends of the plate-shaped base 121, so that the overall structure is better balanced, and the table 122 also has a sufficiently long length, and the length of the slide groove and the rack 211 is greater than the length of the table 122, so that the lateral moving mechanism 22 can cover the entire table 122 area to be detected by its own reciprocating movement along the first direction.

[0031] For further information, see Figure 1 , and further includes a fill light 25, which is annular and fixedly arranged at the periphery of the vision module 24, and the direction of the fill light 25 is consistent with the direction of the vision module 24. Specifically, the ring shape of the fill light 25 is a perfect circle, and the vision module 24 is arranged at the center of the perfect circle, so that the cut pieces in the area to be inspected facing the vision module 24 can be evenly covered by the light source, and the unclear shooting results caused by uneven light are minimized, resulting in incorrect recognition.

[0032] Further, the bracket 21 is arranged outside the side of the shield 11 including the opening 111. Specifically, the height of the bracket 21 is higher than the maximum height of the opening 111, so as to provide enough accommodation space for the robot arm 23 and the vision module 24, and avoid the robot arm 23 or the vision module 24 blocking the transfer table 12 from entering and exiting the opening.

[0033] Furthermore, when the table 122 rotates to the outermost side of the protective cover 11, the extension direction of the table 122 is parallel to the first direction. That is to say, when the servo motor 221 drives the robotic arm 23 to move along the first direction, the robotic arm 23 can drive the visual module 24 to move along the first direction. The movement trajectory covers the coverage range of the table 122 which is also parallel to the first direction, so as to facilitate the complete and unmissable shooting and detection of the cutting parts.

[0034] Although different specific embodiments are mentioned in the content of this application, this application is not limited to the situations described in the industry standards or embodiments, etc. Some industry standards or slightly modified implementation plans based on the implementation of the custom methods or embodiments can also achieve the same, equivalent or similar, or predictable implementation effects after deformation of the above embodiments. The embodiments of data acquisition, processing, output, judgment methods, etc. after these modifications or deformations can still fall within the scope of the optional implementation plans of this application.

[0035] Although the present application has been described through embodiments, those skilled in the art will appreciate that there are many modifications and changes to the present application without departing from the spirit of the present application. It is intended that the attached embodiments include these modifications and changes without departing from the present application.

Claims

1. A visual inspection device integrated on a five-axis laser cutting machine, integrated on one side of the five-axis laser cutting machine, the five-axis laser cutting machine comprising a shield, a cutter and a turntable, the cutter being arranged inside the shield, the shield comprising an opening, and the turntable being reciprocatingly rotatable between the position of the five-axis laser cutting machine and the outside of the opening; characterized in that, The visual inspection device integrated on the five-axis laser cutting machine includes: A bracket, a lateral movement mechanism, a robotic arm and a vision module, wherein the bracket is arranged on the outside of the shield of the five-axis laser cutting machine, the top of the bracket includes a slide groove and a rack, and the slide groove and the rack extend along a first direction; the lateral movement mechanism is arranged on the top of the bracket, and the lateral movement mechanism includes a servo motor, a gear and a slider, the gear can rotate under the drive of the servo motor, the gear is meshed with the rack, the slider is arranged on one side of the servo motor, and the slider is clamped in the slide groove, one end of the robotic arm is fixedly connected to the servo motor through a fixing plate, and the vision module is fixedly arranged on the flange at the end of the robotic arm, so that the servo motor can drive the vision module to reciprocate along the first direction.

2. The visual inspection device integrated on the five-axis laser cutting machine according to claim 1, characterized in that: It also includes a fill light, which is ring-shaped and fixedly arranged on the periphery of the visual module, and the direction of the fill light is consistent with the direction of the visual module.

3. The visual inspection device integrated on the five-axis laser cutting machine according to claim 1, characterized in that: The bracket is disposed outside a side of the shield including the opening.

4. The visual inspection device integrated on the five-axis laser cutting machine according to claim 1, characterized in that: When the table top is rotated to the outermost side of the shield, the table top is located directly below the bracket.

5. The visual inspection device integrated on the five-axis laser cutting machine according to claim 4, characterized in that: The lengths of the slide groove and the rack are greater than the length of the table top.

6. The visual inspection device integrated on the five-axis laser cutting machine according to claim 1, characterized in that: It also includes a PLC module and a buzzer, and the PLC module is electrically connected to the visual module and the buzzer respectively.

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