Device capable of automatically replacing laser head nozzle

Abstract

The utility model discloses a device capable of automatically replacing laser head nozzles, which comprises a bottom plate and a plurality of nozzle seats arranged on the bottom plate, and the plurality of nozzle seats are connected with a driving device and can rotate under the driving of the driving device. The limiting block is arranged on the periphery of the rotating shaft and provided with a plurality of clamping grooves, the tray is arranged above the limiting block and provided with a plurality of protruding structures matched with the clamping grooves, an elastic piece support is arranged between the tray and the limiting block, and the middle of the tray is used for containing a nozzle. The laser head nozzle can be automatically replaced, the replacement time is saved, and the safety of operators is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of laser cutting equipment, in particular to a device capable of automatically replacing a laser head nozzle. Background Art

[0002] Laser cutting is a processing technology that uses a laser beam to cut materials into the desired shape. Due to the advantages of high precision, high efficiency and non-contact processing, laser cutting is widely used in industrial manufacturing, material processing, medical equipment and scientific research.

[0003] During laser cutting, the nozzle at the top of the laser head is close to the heat source and will be damaged due to heat after long-term use. Therefore, the nozzle needs to be replaced regularly to ensure smooth production. Secondly, during the laser processing, nozzles of different specifications need to be replaced for processing materials of different thicknesses and materials to achieve the cutting effect and improve cutting efficiency. The temperature of the nozzle will increase during laser cutting. If the nozzle is replaced manually, it is necessary to wait for the nozzle to cool down before replacing it, resulting in the efficiency of nozzle replacement needs to be improved, and the high-temperature nozzle has a safety hazard of scalding the operator. Utility Model Content

[0004] In order to overcome the deficiencies of the prior art, the utility model provides a device capable of automatically replacing the laser head nozzle, which can realize automatic replacement of the laser head nozzle, save replacement time, and ensure the safety of operators.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A device for automatically replacing laser head nozzles comprises a base plate and a plurality of nozzle seats arranged on the base plate, wherein the plurality of nozzle seats are connected to a driving device and can rotate under the drive of the driving device, wherein the nozzle seats comprise a rotating shaft, a limit block with a plurality of slots arranged on the outer periphery of the rotating shaft, and a tray with a plurality of protrusion structures adapted to the slots arranged above the limit block, an elastic member support is arranged between the tray and the limit block, and the middle portion of the tray is used for placing the nozzle.

[0007] Furthermore, the output end of the driving device is connected to the rotating shaft of the nozzle seat through a synchronous belt assembly, and the synchronous belt assembly includes a driving wheel connected to the output end of the driving device, a driven wheel arranged on the outer periphery of the rotating shaft, and a synchronous belt connecting the driving wheel and the driven wheel.

[0008] Furthermore, an idler wheel assembly is arranged on the base plate, and the idler wheel assembly includes an idler wheel positioning shaft and an idler wheel arranged on the idler wheel positioning shaft. The idler wheel is arranged adjacent to the driven wheel, and the synchronous belt passes between the idler wheel and the driven wheel.

[0009] Furthermore, a tension adjustment component is arranged on the base plate, and the tension adjustment component includes a waist-shaped hole arranged on the base plate, a tensioning wheel positioning shaft arranged in the waist-shaped hole, a tensioning pulley arranged on the tensioning wheel positioning shaft, and a tensioning screw, the synchronous belt is arranged on the outer periphery of the tensioning pulley, and one end of the tensioning screw extends into the waist-shaped hole and is connected to the tensioning wheel positioning shaft.

[0010] Furthermore, a fixing piece is provided on one side of the outer circumference of the rotating shaft, and the driven wheel and the limit block are provided on the outer circumference of the fixing piece.

[0011] Furthermore, the rotating shaft passes through the bottom plate, a spacer is provided at a contact position between the rotating shaft and the upper end of the bottom plate, and an angular contact ball bearing is provided at a contact position between the rotating shaft and the lower end of the bottom plate.

[0012] Furthermore, the lower end of the rotating shaft is pressed against the bottom plate by a pressing member, and the pressing member includes a locking nut and a bearing pressing flange, the locking nut is arranged on the outer periphery of the rotating shaft, and the bearing pressing flange is arranged on the outer periphery of the locking nut.

[0013] Furthermore, a first step is provided at the bottom of the tray, a limit plate is provided at the first step, and the limit plate is locked to the top of the rotating shaft by screws.

[0014] Furthermore, a second step is provided on the limiting block, the elastic member is provided at the second step and the top of the elastic member abuts against the bottom of the tray.

[0015] Furthermore, a brush and a calibration plate are provided on the upper surface of the base plate, and a cover shell is provided on the outer periphery of the base plate.

[0016] The beneficial effects of the utility model are:

[0017] The utility model provides a device capable of automatically replacing a laser head nozzle, which can realize automatic replacement of the laser head nozzle, saves replacement time and ensures the safety of operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0019] Figure 1 It is the overall assembly schematic diagram of the utility model (axonometric);

[0020] Figure 2 It is a schematic diagram of the utility model after removing the cover (front view);

[0021] Figure 3 It is a schematic diagram of the utility model after removing the cover (top view);

[0022] Figure 4 is along Figure 2 Section view of AA in the middle;

[0023] Description of reference numerals:

[0024] 1. Cover; 2. Brush; 3. Calibration plate; 4. Base plate; 5. Base plate bracket; 6. Driving device; 7. Driving wheel; 8. Synchronous belt; 9. Idler wheel; 10. Idler wheel positioning shaft; 11. Tensioning pulley; 12. Tensioning wheel positioning shaft; 13. Tensioning screw; 14. Driven wheel; 15. Rotating shaft; 16. Pallet; 160, first pallet; 161, second pallet; 17. Limit block; 18. Elastic member; 19. Limit plate; 20. Spacer; 21. Locking nut; 22. Bearing clamping flange; 23. Angular contact ball bearing; 24. Fixing piece; 25. Nozzle; 250, nozzle seat. DETAILED DESCRIPTION

[0025] The following will clearly and completely describe the concept, specific structure and technical effects of the utility model in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, other embodiments obtained by technicians in this field without creative work are all within the scope of protection of the utility model. In addition, all the connection / connection relationships involved in the patent do not refer to the direct connection of components, but refer to the formation of a better connection structure by adding or reducing connection accessories according to the specific implementation situation. The various technical features in the utility model can be combined interchangeably without conflicting with each other.

[0026] Reference Figures 1 to 4 The utility model provides a device for automatically replacing the laser head nozzle 25, including a bottom plate 4 and a plurality of nozzle seats 250 arranged on the bottom plate 4, and the two ends of the bottom plate 4 are supported by the bottom plate bracket 5. The plurality of nozzle seats 250 are connected to a driving device 6 and can rotate under the drive of the driving device 6. The nozzle seat 250 includes a rotating shaft 15, a limit block 17 with a plurality of slots arranged on the outer periphery of the rotating shaft 15, and a tray 16 with a plurality of protrusion structures adapted to the slots arranged above the limit block 17, an elastic member 18 is provided between the tray 16 and the limit block 17 for support, and the middle part of the tray 16 is used to place the nozzle 25, specifically, the top of the tray 16 is provided with a hexagonal groove consistent with the outer periphery of the nozzle 25, and the nozzle 25 is threadedly connected to the bottom of the laser head.

[0027] In this embodiment, the nozzle seats 250 are provided in 10 groups, and each nozzle seat 250 can be equipped with nozzles 25 with the same or different functions to meet different working requirements.

[0028] In this embodiment, the output end of the driving device 6 is connected to the rotating shaft 15 of the nozzle seat 250 through a synchronous belt 8 assembly, and the synchronous belt 8 assembly includes a driving wheel 7 connected to the output end of the driving device 6, a driven wheel 14 arranged on the outer periphery of the rotating shaft 15, and a synchronous belt 8 connecting the driving wheel 7 and the driven wheel 14.

[0029] Since there are multiple nozzle seats 250, it means that the synchronous belt 8 needs to be wrapped around multiple driven wheels 14 at the same time to achieve the driving function. In this embodiment, an idler wheel assembly is provided, and the idler wheel assembly includes an idler wheel positioning shaft 10 and an idler wheel 9 arranged on the idler wheel positioning shaft 10. The idler wheel 9 is arranged adjacent to the driven wheel 14, and the synchronous belt 8 passes between the idler wheel 9 and the driven wheel 14. By designing the idler wheel assembly, the synchronous belt 8 can play a role of transition transmission, thereby achieving stable transmission of the synchronous belt 8.

[0030] A tension adjustment component is arranged on the base plate 4, and the tension adjustment component includes a waist-shaped hole arranged on the base plate 4, a tensioning wheel positioning shaft 12 arranged in the waist-shaped hole, a tensioning pulley 11 arranged on the tensioning wheel positioning shaft 12, and a tensioning screw 13. The synchronous belt 8 is arranged on the outer periphery of the tensioning pulley 11, and one end of the tensioning screw 13 extends into the waist-shaped hole and is connected to the tensioning wheel positioning shaft 12. The position of the tensioning wheel positioning shaft 12 in the waist-shaped hole can be adjusted by the tensioning screw 13 to adjust the tightness of the synchronous belt 8.

[0031] Since the driving device 6 drives the driven wheel 14 disposed on the periphery of the rotating shaft 15 to rotate through the synchronous belt 8 assembly, the driven wheel 14 needs to drive the rotating shaft 15 and the limit block 17 to rotate together. Therefore, a fixing member 24 is provided on one side of the outer periphery of the rotating shaft 15, and the driven wheel 14 and the limit block 17 are disposed on the periphery of the fixing member 24. In this embodiment, the fixing member 24 adopts a B-type key. In actual application scenarios, a suitable fixing member 24 can be selected as needed. By providing the fixing member 24, the positions of the driven wheel 14, the rotating shaft 15 and the limit block 17 can be relatively fixed, so that the three can remain consistent during the rotational motion.

[0032] The rotating shaft 15 passes through the bottom plate 4, and the lower end of the rotating shaft 15 is pressed on the bottom plate 4 by a pressing member, and the pressing member includes a locking nut 21 and a bearing pressing flange 22. The locking nut 21 is arranged on the outer periphery of the rotating shaft 15, and the bearing pressing flange 22 is arranged on the outer periphery of the locking nut 21. Furthermore, a spacer 20 is arranged at the contact position between the rotating shaft 15 and the upper end of the bottom plate 4, and an angular contact ball bearing 23 is arranged at the contact position between the rotating shaft 15 and the lower end of the bottom plate 4. When the rotating shaft 15 rotates, rolling friction occurs between the rotating shaft 15 and the bottom plate 4, which can reduce the effect of friction.

[0033] Furthermore, a first step is provided at the bottom of the tray 16, and a limit plate 19 is provided at the first step, and the limit plate 19 is screwed to the top of the rotating shaft 15. A second step is provided on the limit block 17, and the elastic member 18 is provided at the second step and the top of the elastic member 18 abuts against the bottom of the tray 16. In this embodiment, the elastic member 18 is a spring.

[0034] The upper surface of the bottom plate 4 is provided with a brush 2 and a calibration plate 3. When the laser head needs to replace the nozzle 25, the nozzle 25 is first driven to move and the nozzle 25 is pressed on the brush 2 for omnidirectional movement to remove the iron slag and burrs on the nozzle 25. The calibration plate 3 is used to perform capacitance calibration on the nozzle 25. The outer periphery of the bottom plate 4 is provided with a cover 1, which can prevent dust and protect the nozzle 25.

[0035] The working principle of the utility model is as follows:

[0036] Combination Figure 3 For the convenience of description, the empty tray 16 is set as the first tray 160, and the tray 16 with the nozzle 25 is set as the second tray 161. When the laser head needs to replace the nozzle 25, the nozzle 25 is first moved to the brush 2 for cleaning, and then moved to the top of the first tray 160, aligned with the hexagonal groove on the top of the first tray 160 and pressed down to a certain depth, the driving device 6 drives the rotating shaft 15 to reverse, and then drives the first tray 160 to rotate. Under the force of the laser head pressing down, the first tray 160 rotates and slides down with the nozzle 25, so that the nozzle 25 is disengaged from the laser head thread until the nozzle 25 completely falls into the groove on the first tray 160.

[0037] The laser head is controlled to move to the top of the second tray 161, aligning the center of the nozzle 25 on the top of the second tray 161 and pressing down to a certain depth. The drive device 6 drives the rotating shaft 15 to rotate forward, driving the second tray 161 to rotate and then tighten the nozzle 25 thread to the bottom of the laser head. The drive device 6 has torque feedback. According to the system setting, once the torque is overloaded, it is tightened. When the system receives the tightening signal, the laser head moves upward and moves to the position of the calibration plate 3 to determine the capacitance height. At this point, the nozzle 25 is installed, and the laser head returns to the set starting point to continue the action.

[0038] The device for automatically replacing the laser head nozzle provided by the utility model can realize automatic replacement of the laser head nozzle, save replacement time, and eliminate the need for operator participation in the process of replacing the nozzle, thereby ensuring the safety of the operator.

[0039] The above is a specific description of the preferred implementation of the utility model, but the invention of the utility model is not limited to the described embodiments. Technical personnel familiar with the field can also make various equivalent deformations or substitutions without violating the spirit of the utility model. These equivalent deformations or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A device for automatically replacing a laser head nozzle, characterized in that: It includes a base plate and a plurality of nozzle seats arranged on the base plate, wherein the plurality of nozzle seats are connected to a driving device and can rotate under the drive of the driving device, wherein the nozzle seats include a rotating shaft, a limit block with a plurality of slots arranged on the outer periphery of the rotating shaft, and a tray with a plurality of protrusion structures adapted to the slots arranged above the limit block, an elastic member support is arranged between the tray and the limit block, and the middle part of the tray is used for placing the nozzle.

2. The device for automatically replacing a laser head nozzle according to claim 1, characterized in that: The output end of the driving device is connected to the rotating shaft of the nozzle seat through a synchronous belt assembly, and the synchronous belt assembly includes a driving wheel connected to the output end of the driving device, a driven wheel arranged on the periphery of the rotating shaft, and a synchronous belt connecting the driving wheel and the driven wheel.

3. The device for automatically replacing a laser head nozzle according to claim 2, characterized in that: An idler wheel assembly is arranged on the bottom plate, and the idler wheel assembly includes an idler wheel positioning shaft and an idler wheel arranged on the idler wheel positioning shaft. The idler wheel is arranged adjacent to the driven wheel, and the synchronous belt passes between the idler wheel and the driven wheel.

4. The device for automatically replacing a laser head nozzle according to claim 2, characterized in that: A tension adjustment component is arranged on the base plate, and the tension adjustment component includes a waist-shaped hole arranged on the base plate, a tensioning wheel positioning shaft arranged in the waist-shaped hole, a tensioning pulley arranged on the tensioning wheel positioning shaft, and a tensioning screw. The synchronous belt is arranged on the outer periphery of the tensioning pulley, and one end of the tensioning screw extends into the waist-shaped hole and is connected to the tensioning wheel positioning shaft.

5. The device for automatically replacing a laser head nozzle according to claim 2, characterized in that: A fixing piece is disposed on one side of the outer circumference of the rotating shaft, and the driven wheel and the limit block are disposed on the outer circumference of the fixing piece.

6. The device for automatically replacing a laser head nozzle according to claim 1, characterized in that: The rotating shaft passes through the bottom plate, a spacer is provided at the contact position between the rotating shaft and the upper end of the bottom plate, and an angular contact ball bearing is provided at the contact position between the rotating shaft and the lower end of the bottom plate.

7. The device for automatically replacing a laser head nozzle according to claim 6, characterized in that: The lower end of the rotating shaft is pressed against the bottom plate by a pressing member, and the pressing member includes a locking nut and a bearing pressing flange. The locking nut is arranged on the outer periphery of the rotating shaft, and the bearing pressing flange is arranged on the outer periphery of the locking nut.

8. The device for automatically replacing a laser head nozzle according to claim 1, characterized in that: A first step is provided at the bottom of the tray, a limit plate is provided at the first step, and the limit plate is locked to the top of the rotating shaft by screws.

9. The device for automatically replacing a laser head nozzle according to claim 1, characterized in that: The limiting block is provided with a second step, the elastic member is arranged at the second step and the top of the elastic member abuts against the bottom of the tray.

10. The device for automatically replacing a laser head nozzle according to claim 1, characterized in that: The upper surface of the bottom plate is provided with a brush and a calibration plate, and the outer periphery of the bottom plate is provided with a cover shell.

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