Laser cutting temperature detection device

Abstract

The utility model belongs to the technical field of laser processing equipment, and specifically provides a laser cutting temperature detection device, including an infrared thermal imager, a mounting connector fixedly connected to the infrared thermal imager, and a transmission mechanism connected to the mounting connector to provide movement and rotation power for the infrared thermal imager, wherein the transmission mechanism includes a linear motor that provides lateral movement power for the infrared thermal imager; the mounting connector is connected to the linear motor, and the mounting connector is fixed inside the large enclosure of the laser cutting equipment through the linear motor. An infrared thermal imager is set up, and through the non-contact detection, high penetration, high resolution and other characteristics of the thermal imager, the temperature changes of the blister and the electric control cabinet are ensured to be detected in real time during the high-power laser cutting process, so as to prevent the blister from catching fire due to excessive cutting temperature.

Description

Technical Field

[0001] The utility model relates to the technical field of laser processing equipment, in particular to a laser cutting temperature detection device. Background Art

[0002] In recent years, laser cutting technology has achieved breakthrough development and is moving towards high power, high precision and large format. At the same time, for the sake of safety, environmental protection and aesthetics, existing laser cutting machines have added large enclosures to make laser cutting performance better.

[0003] The main material of the large enclosure is plastic, most of which have poor heat resistance, large thermal expansion rate, and are easy to burn. The laser cutting machine will generate a lot of heat energy when working, part of which is absorbed by the large enclosure. Long-term operation will cause the temperature to continue to rise. In addition, when laser cutting metal materials, sparks are prone to splashing under the action of cutting gas. Some sparks splash on the large enclosure, which can easily cause a fire in the large enclosure.

[0004] Therefore, for high-power laser cutting machines, how to design a laser cutting temperature detection device to perform temperature detection over a large range to solve the above problems caused by excessively high temperatures in the large enclosure. Summary of the invention

[0005] Aiming at the problem that high-power laser cutting equipment works for a long time and causes the temperature to rise, thereby causing large enclosures, blister parts, and electric control cabinet circuits in the laser cutting equipment to catch fire, the utility model provides a laser cutting temperature detection device.

[0006] The technical solution of the utility model provides a laser cutting temperature detection device, comprising an infrared thermal imager, a mounting connector fixedly connected to the infrared thermal imager, and a transmission mechanism connected to the mounting connector and providing movement and rotation power for the infrared thermal imager.

[0007] As a preferred embodiment of the technical solution of the utility model, the transmission mechanism includes a linear motor that provides lateral movement power for the infrared thermal imager;

[0008] The installation connector is connected to the linear motor, and the installation connector is fixed inside the large enclosure of the laser cutting equipment through the linear motor.

[0009] As a preferred embodiment of the technical solution of the utility model, the linear motor includes a stator and a mover arranged on the stator; both ends of the stator are connected to the rear crossbeam of the large enclosure of the laser cutting equipment by bolts;

[0010] The mover is fixedly connected to the mounting connector.

[0011] As a preferred embodiment of the technical solution of the utility model, the installation connector includes a detection fixture connected to the mover, the detection fixture is connected to a fixed connector, the fixed connector is rotatably connected to a rotating connector, and the infrared thermal imager is fixed on the rotating connector.

[0012] As a preferred embodiment of the technical solution of the utility model, the installation connector includes an L-shaped detection fixture consisting of two end faces; the first end face of the L-shaped detection fixture is fixedly connected to the mover, and the second end face of the L-shaped detection fixture is fixedly connected to a fixed connector.

[0013] As a preferred embodiment of the technical solution of the utility model, the fixed connecting member is a U-shaped fixed connecting member, and the rotating connecting member is an inverted U-shaped rotating connecting member;

[0014] The bottom of the U-shaped fixed connector is fixed on the second end face of the L-shaped detection fixture, and the two ends of the inverted U-shaped rotating connector are rotatably connected to the U-shaped fixed connector inside the U-shaped fixed connector; the top of the inverted U-shaped rotating connector is fixedly connected to the infrared thermal imager.

[0015] As a preferred embodiment of the technical solution of the utility model, the transmission mechanism also includes a rotation drive mechanism for providing rotational power for the infrared thermal imager;

[0016] The rotary drive mechanism comprises an outer gear, an inner gear and a stepper motor mounted on a fixed connecting member, wherein the outer gear is connected to the output shaft of the stepper motor to realize meshing transmission between the stepper motor and the outer gear and the inner gear;

[0017] The rotating connecting member is connected with the internal gear.

[0018] As a preferred embodiment of the technical solution of the utility model, a long hole for adjusting the installation position is provided at the connection between the rotating connecting member and the internal gear;

[0019] The rotating connecting piece is connected to the internal gear through bolts passing through the elongated holes.

[0020] As a preferred embodiment of the technical solution of the utility model, a concave surface for placing the stepper motor is provided at the position where the fixed connecting member and the stepper motor are fixed.

[0021] As a preferred embodiment of the technical solution of the utility model, the device also includes a post-processor and an audible and visual alarm;

[0022] The infrared thermal imager and the sound and light alarm are connected to the post-processor respectively.

[0023] As a preferred embodiment of the technical solution of the utility model, the post-processor includes a central processing unit and a data comparator connected to the central processing unit; the data comparator is connected to the sound and light alarm.

[0024] As a preferred embodiment of the technical solution of the utility model, the stepper motor, the linear motor and the infrared thermal imager are respectively connected to the central processing unit.

[0025] The central processing unit is provided with a remote alarm interface for sending an alarm signal to an external host computer.

[0026] It can be seen from the above technical solutions that the utility model has the following advantages:

[0027] 1. Set up an infrared thermal imager. Through the non-contact detection, high penetration, high resolution and other characteristics of the thermal imager, it can ensure real-time detection of temperature changes of blister parts and electric control cabinets during high-power laser cutting to prevent blister parts from catching fire due to excessive cutting temperature.

[0028] 2. The concave design of the stepper motor installation position provided by the utility model optimizes the method of fixing the motor, which can not only effectively improve the strength of the fixed connecting parts, but also provide an installation guide for the motor during assembly, thereby ensuring the installation accuracy and installation effect, making the overall operation smoother and more stable.

[0029] 3. Compared with traditional laser cutting equipment, the addition of temperature monitoring can quickly identify and judge the temperature of the large enclosure and the electric control cabinet. If the temperature is abnormal or exceeds the limit, the alarm system will sound and flash the danger warning light to remind maintenance personnel to maintain the equipment in time.

[0030] In addition, the utility model has a reliable design principle, a simple structure and a very broad application prospect.

[0031] It can be seen that compared with the prior art, the utility model has substantial characteristics and progress, and the beneficial effects of its implementation are also obvious. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0033] Figure 1 This is a schematic block diagram of a temperature detection device for laser cutting equipment of the present utility model.

[0034] Figure 2 This is a schematic diagram of the structure of the temperature detection device for laser cutting equipment of the utility model.

[0035] Figure 3 This is a schematic diagram of the installation position of the laser cutting equipment of the utility model.

[0036] In the figure, 1. Large enclosure component; 2. Linear motor; 2-1. Stator; 2-2. Mover; 3. Detection fixture; 4. Fixed connecting part; 5. Rotating connecting part; 6. External gear; 7. Stepper motor; 8. Internal gear; 9. Post-processor; 10. Infrared thermal imager; 11. Data comparator; 12. Sound and light alarm; 13. Central processing unit. DETAILED DESCRIPTION

[0037] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0038] like Figure 1 As shown, an embodiment of the utility model provides a laser cutting temperature detection device, including an infrared thermal imager 10, a mounting connector fixedly connected to the infrared thermal imager 10, and a transmission mechanism connected to the mounting connector to provide movement and rotation power for the infrared thermal imager.

[0039] It should be noted that the mounting connector is used to fix the infrared thermal imager 10, and the transmission mechanism is connected to the mounting connector. The transmission mechanism drives the mounting connector to move laterally and can drive the infrared thermal imager to rotate and adjust the scanning angle.

[0040] In some embodiments, Figure 1 and 2 As shown, the transmission mechanism includes a linear motor 2 that provides lateral movement power for the infrared thermal imager 10; the mounting connector is connected to the linear motor 2, and the mounting connector is fixed inside the large enclosure of the laser cutting equipment through the linear motor 2.

[0041] The linear motor 2 includes a stator 2-1 and a mover 2-2 disposed on the stator; both ends of the stator 2-1 are connected to the rear crossbeam of the large enclosure of the laser cutting equipment by bolts; the mover 2-2 is fixedly connected to the mounting connector. The mover 2-2 is on the stator 2-1, and realizes the left and right sliding of the X-axis, providing power for the infrared thermal imager 10 to move horizontally.

[0042] By assembling the linear motor 2, the detection fixture 3, the fixed connector 4, the rotating connector 5, the external gear 6, the stepping motor 7, the internal gear 8, and the infrared thermal imager 10, the temperature of the large enclosure, the blister, and the wiring harness can be detected in real time during high-power cutting by the high-power laser cutting equipment.

[0043] In some embodiments, the mounting connector includes a detection fixing member 3 connected to the mover. The detection fixing member 3 is connected to a fixed connector 4. The fixed connector 4 is rotatably connected to a rotating connector 5. The infrared thermal imager 10 is fixed to the rotating connector 5. Fix the detection fixing member 3 to the bottom of the linear motor 2, level it and ensure the installation accuracy.

[0044] In some embodiments, the detection fixing member 3 is an L-shaped detection fixing member composed of two end faces; the first end face of the L-shaped detection fixing member is fixedly connected to the mover, and the fixed connector 4 is fixedly connected to the second end face of the L-shaped detection fixing member.

[0045] Correspondingly, the fixed connector 4 is a U-shaped fixed connector, and the rotating connector 5 is an inverted U-shaped rotating connector; the bottom of the U-shaped fixed connector is fixed to the second end face of the L-shaped detection fixing member, and the two ends of the inverted U-shaped rotating connector are rotatably connected to the U-shaped fixed connector inside the U-shaped fixed connector; the top of the inverted U-shaped rotating connector is fixedly connected to the infrared thermal imager 10.

[0046] The transmission mechanism further includes a rotation driving mechanism for providing rotation power to the infrared thermal imager;

[0047] The rotation driving mechanism includes an external gear 6, an internal gear 8 and a stepping motor 7 mounted on the fixed connector. The external gear 6 is connected to the output shaft of the stepping motor 7 to realize the meshing transmission between the stepping motor 7, the external gear 6 and the internal gear 8; the rotating connector 5 is connected to the internal gear 8.

[0048] In some embodiments, a long hole for adjusting the installation position is provided at the connection between the rotating connector 5 and the internal gear 8; the rotating connector 5 is connected to the internal gear 8 by bolts passing through the long hole. The rotating connector 5 is connected to the internal gear 8 by using M3 bolts. A long hole is provided at the connection of the rotating connector 5 to facilitate the adjustment of the up and down installation position. The infrared thermal imager 10 is fixed to the rotating connector 5. Through the structure of the rotating connector 5, the infrared thermal imager 10 can adjust the rotation angle range of ±45°, ensuring no detection blind area during the visual recognition process.

[0049] Correspondingly, a concave surface for placing the stepping motor is provided at the position where the fixed connector 4 is fixed to the stepping motor 7.

[0050] Fix the fixed connector 4 and the detection fixture 3 with M6 bolts, install the outer gear 6, inner gear 8, and stepper motor 7 on the fixed connector 4, ensure the installation accuracy according to the installation hole and installation slot hole position and distance, fix the outer gear 6, inner gear 8, and stepper motor 7, and realize the meshing transmission between the stepper motor and the two gears. Thicken the fixed connector 4, and cut a concave treatment at the contact point with the stepper motor 7 to ensure that the contact area is increased during the installation of the stepper motor and provide a guiding effect. Solve the problem that the stepper motor 7 slips when the infrared thermal imager 10 rotates up and down, causing the infrared thermal imager 10 to rotate insensitively. Compared with servo motors, stepper motors are used, which have high cost performance, simple control, high product stability, and good ultra-low speed performance.

[0051] Different from the above-mentioned embodiment, the detection fixing member is a rectangular parallelepiped; one surface of the rectangular parallelepiped is fixedly connected to the mover, and the top of the rectangular parallelepiped is fixedly connected to a fixing connecting member.

[0052] In some embodiments, Figure 3 As shown, the device also includes a post-processor 9 and an audible and visual alarm 12; the infrared thermal imager 10 and the audible and visual alarm are respectively connected to the post-processor.

[0053] The post-processor comprises a central processing unit 13 and a data comparator 11 connected to the central processing unit 13 ; the data comparator is connected to an audible and visual alarm 12 .

[0054] It should be noted that the stepper motor, the linear motor and the infrared thermal imager are respectively connected to the central processing unit, and the central processing unit controls the operation of the stepper motor and the linear motor.

[0055] The infrared thermal imager 10 is based on thermoelectric effect. The metal and semiconductor materials receiving infrared radiation generate real-time temperature difference △T by using thermoelectric effect. The real-time temperature difference △T identified by the thermal imager is transmitted to the post-processor 9 through data, and the infrared thermal imager identifies the real-time temperature △T. The temperature of the monitoring point is analyzed by the data comparator according to the real-time temperature △T. If △T>△T0 / 1.2, it is judged that there is a fire risk for the blister; if △T>△T0, it is judged that the blister is on fire (△T0 is the preset melting temperature of the blister).

[0056] The data comparator 11 is directly connected to the sound and light alarm 12. According to the data comparator 11, if there is a fire risk in the blister, the central processor will directly transmit the data to the host computer through the remote alarm interface. The host computer will pop up a window to remind the staff to pay attention to the cutting situation near the blister. The color of the sound and light alarm will also turn yellow to remind the operator to check whether there is an open flame in the equipment in time. If the data comparator 11 determines that there is a fire, the sound and light alarm 12 will emit a harsh sound, and the color of the alarm will turn red. The host computer controls the equipment to force shutdown and power off to protect the safety of the laser cutting equipment and the safety of the processing surroundings. The processing process of the host computer is well-known and will not be repeated again.

[0057] Although the utility model is described in detail by referring to the accompanying drawings and in combination with the preferred embodiments, the utility model is not limited thereto. Without departing from the spirit and essence of the utility model, a person of ordinary skill in the art may make various equivalent modifications or substitutions to the embodiments of the utility model, and these modifications or substitutions shall be within the scope of the utility model / any person of ordinary skill in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the utility model, and they shall be within the scope of protection of the utility model. Therefore, the scope of protection of the utility model shall be based on the scope of protection of the claims.

Claims

1. A laser cutting temperature detection device, characterized in that: It includes an infrared thermal imager, a mounting connector fixedly connected to the infrared thermal imager, and a transmission mechanism connected to the mounting connector to provide movement and rotation power for the infrared thermal imager; The transmission mechanism includes a linear motor that provides lateral movement power for the infrared thermal imager; The mounting connector is connected to the linear motor, and the mounting connector is fixed inside the large enclosure of the laser cutting equipment through the linear motor; The linear motor includes a stator and a mover arranged on the stator; Both ends of the stator are connected to the rear crossbeam of the large enclosure of the laser cutting equipment by bolts; The mover is fixedly connected to the mounting connector; The installation connection piece comprises a detection fixing piece connected to the mover, the detection fixing piece is connected to a fixing connecting piece, the fixing connecting piece is rotatably connected to a rotating connecting piece, and the infrared thermal imager is fixed on the rotating connecting piece.

2. The laser cutting temperature detection device according to claim 1, characterized in that: The transmission mechanism also includes a rotation drive mechanism for providing rotational power to the infrared thermal imager; The rotary drive mechanism comprises an outer gear, an inner gear and a stepper motor mounted on a fixed connecting member, wherein the outer gear is connected to the output shaft of the stepper motor to realize meshing transmission between the stepper motor and the outer gear and the inner gear; The rotating connecting member is connected with the internal gear.

3. The laser cutting temperature detection device according to claim 2, characterized in that: A long hole for adjusting the installation position is provided at the connection between the rotating connecting piece and the internal gear; The rotating connecting piece is connected to the internal gear through bolts passing through the elongated holes.

4. The laser cutting temperature detection device according to claim 2 or 3, characterized in that: A concave surface for placing the stepper motor is arranged at a position where the fixed connecting piece is fixed to the stepper motor.

5. The laser cutting temperature detection device according to claim 4, characterized in that: The device also includes a post-processor and an audible and visual alarm; The infrared thermal imager and the sound and light alarm are connected to the post-processor respectively.

6. The laser cutting temperature detection device according to claim 5, characterized in that: The post-processor comprises a central processing unit and a data comparator connected to the central processing unit; the data comparator is connected to the sound and light alarm.

7. The laser cutting temperature detection device according to claim 6, characterized in that: The stepper motor, the linear motor and the infrared thermal imager are respectively connected to the central processing unit.

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