A laser cladding powder collection device and collection method

Abstract

The present invention discloses a laser cladding powder collection device and a collection method, belonging to the technical field of laser cladding devices. Among them, for the bottom plate of the laser cladding powder collection device, two collection boxes are slidably assembled on the top of the bottom plate. A rotating shaft is arranged between the two collection boxes, and the collection box is detachably connected to the rotating shaft through a clamping component; when the fully loaded collection box rotates 180° so that the limiting block is reinserted into the through groove, one end of the telescopic unit on the limiting block can move downward along the inclined groove, thereby driving the reel to rotate. The reel can be used to wind up the towing rope, so that the towing rope can pull the positioning block to contract into the insertion bar, so that the insertion bar can be removed from the slot, so that the fully loaded collection box can be separated from the rotating shaft, while the empty collection box is still in a clamped state with the rotating shaft after rotating 180°, enabling the staff to have sufficient time to process the fully loaded collection box.

Description

Technical Field

[0001] The present invention relates to the technical field of laser cladding devices, and particularly to a laser cladding powder collection device and a collection method. Background Technique

[0002] In recent years, laser cladding technology has developed rapidly and has currently become one of the hotspots in the research of laser processing technology at home and abroad. Laser cladding technology uses a high-energy laser beam as a heat source to clad powder materials on the surface of parts by means of pneumatic or gravity powder feeding, so as to improve the surface hardness, wear resistance, corrosion resistance, oxidation resistance, and high-temperature resistance of the materials.

[0003] Chinese Patent CN214004787U discloses a follow-up powder receiving device for a laser cladding machine tool. This solution creatively adopts the concept of follow-up powder receiving, enabling the powder receiving device to move as the laser cladding head moves in the Y-axis direction, so that the powder receiving device can timely collect the fallen metal powder.

[0004] The above device collects the fallen powder by slidably arranging a powder receiving tray on the top of the base, and the powder receiving tray is located between the workpiece and the base. However, when the powder receiving tray is full, it is not convenient to replace it. Especially during the laser cladding process, if the powder receiving tray needs to be replaced, the operation needs to be stopped. To sum up, there is still room for improvement in the above device.

[0005] Therefore, it is necessary to provide a laser cladding powder collection device and a collection method to solve the above technical problems. Summary of the Invention

[0006] The purpose of the present invention is to provide a laser cladding powder collection device and a collection method to solve the problem that the existing device collects the fallen powder by slidably arranging a powder receiving tray on the top of the base, and the powder receiving tray is located between the workpiece and the base, but it is not convenient to replace the powder receiving tray when it is full as mentioned in the above background technique.

[0007] Based on the above ideas, the present invention provides the following technical solution: A laser cladding powder collection device includes a bottom plate. Two collection boxes are slidably assembled on the top of the bottom plate. A rotating shaft is arranged between the two collection boxes. The collection box is detachably connected to the rotating shaft through a clamping component. A through groove is opened on the bottom plate. Guide surfaces are arranged at both side edges of the top of the through groove. A limiting block matched with the through groove is arranged at the bottom position of the collection box. An elastic support plate is elastically connected to the bottom end inside the collection box;

[0008] A gear is sleeved on the outer side of the rotating shaft, and a rack meshing with the gear is fixedly arranged on the inner wall of the through groove. As the metal powder in the collection box gradually increases, the support plate is pressed downward to move, so that the rotating shaft can be clamped with the gear. When the rotating shaft is driven to rotate by the meshing of the gear and the rack, the two collection boxes can rotate with the rotating shaft. When the limiting block below the collection box carrying the metal powder is inserted into the through groove again during the rotation process, the clamping component on this collection box can be disengaged from the rotating shaft.

[0009] As a further scheme of the present invention: the clamping component includes a plug strip fixedly connected with the collection box, and positioning blocks are elastically connected to both side surfaces of the plug strip. The side of the positioning block away from the collection box is set as an inclined surface, and a slot matching with the plug strip and the positioning block is arranged on the outer wall of the rotating shaft.

[0010] As a further scheme of the present invention: a reel is rotatably installed at the bottom surface of the collection box, the reel is connected with the collection box through a torsion spring, a traction rope is fixedly arranged between the reel and the positioning block, the limiting block is located below the reel and is coaxially arranged with the reel, an inclined groove is arranged on the inner wall of the reel, and a telescopic unit is elastically connected to the limiting block. When one end of the telescopic unit is inserted into the inclined groove and moves downward, the reel can be driven to rotate through the telescopic unit.

[0011] As a further scheme of the present invention: a vertical shaft is fixedly arranged on the support plate, the vertical shaft is coaxially arranged with the reel, and the bottom end of the vertical shaft can extend downward into the reel.

[0012] As a further scheme of the present invention: a magnetic plate is fixedly arranged on the side surface of the support plate close to the rotating shaft, the magnetic plate can move in the vertical direction relative to the collection box, a pull rod is elastically connected to the position of the outer wall of the rotating shaft close to the magnetic plate, the pull rod is made of a magnet, and the surface of the pull rod opposite to the magnetic plate has the same magnetic pole. A clamping block is elastically connected to the position of the outer wall of the rotating shaft where the gear is located, a clamping groove matching with the clamping block is arranged on the inner wall of the gear, and a pull rope is fixedly arranged between the clamping block and the pull rod.

[0013] As a further scheme of the present invention: a recessed part is arranged on the side of the collection box close to the rotating shaft, so that the collection box can be attached to the outer side of the rotating shaft, and the plug strip is fixed on the inner wall of the recessed part.

[0014] As a further scheme of the present invention: a moving frame is slidably assembled on one side of the bottom plate, and a laser cladding head is arranged at a position close to the top of the moving frame.

[0015] As a further scheme of the present invention: a connecting plate is arranged at the bottom of the bottom plate, the rotating shaft passes through the connecting plate and is rotatably matched with the connecting plate, and the connecting plate is fixedly connected with the moving frame.

[0016] As a further solution of the present invention: a filter screen is installed inside the collection box and near the upper position.

[0017] A method for collecting powder using the above laser cladding powder collection device includes the following steps: collecting metal powder through one of the collection boxes. When one of the collection boxes is full, the rotating shaft can be engaged with the gear; driving the rotating shaft to rotate through the gear, so that the rotating shaft can drive the two collection boxes to rotate, thereby swapping the positions of the two collection boxes, enabling the empty collection box to remain in a state of being engaged with the rotating shaft and collecting metal powder, while the full collection box is disconnected from the rotating shaft.

[0018] Compared with the prior art, the beneficial effect of the present invention is that when the full collection box rotates 180° so that the limiting block is inserted into the through groove again, one end of the telescopic unit on the limiting block can move downward along the inclined groove, thereby driving the reel to rotate. The reel can be used to wind up the traction rope, so that the traction rope can pull the positioning block to contract into the insertion bar, so that the insertion bar can be removed from the slot, enabling the full collection box to be separated from the rotating shaft, while the empty collection box is still in an engaged state with the rotating shaft after rotating 180°, giving the staff sufficient time to process the full collection box. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the drawings and embodiments:

[0020] Figure 1 is the overall structural schematic diagram of the present invention;

[0021] Figure 2 is the connection structure schematic diagram of the moving frame and the connecting plate of the present invention;

[0022] Figure 3 is the cross-sectional view of the two collection boxes of the present invention;

[0023] Figure 4 is the cooperation schematic diagram of the rack and the gear of the present invention;

[0024] Figure 5 is the cross-sectional view of the rotating shaft and the collection box of the present invention;

[0025] Figure 6 is the cooperation schematic diagram of the rotating shaft, the gear and the collection box of the present invention;

[0026] Figure 7 is the present invention Figure 5 magnified structural schematic diagram at A;

[0027] Figure 8 is the present invention Figure 5 magnified structural schematic diagram at B;

[0028] Figure 9 Schematic diagram of the positioning block structure of the present invention;

[0029] Figure 10 Schematic diagram of the inclined groove structure of the present invention;

[0030] Figure 11 Schematic diagram of the telescopic unit structure of the present invention;

[0031] Figure 12 Schematic diagram of the limiting spring structure of the present invention;

[0032] Figure 13 is the present invention Figure 2 Schematic diagram of the enlarged structure at position C.

[0033] In the figure: 1. Base plate; 101. Through groove; 1011. Guide surface; 2. Bracket; 201. Chuck; 3. Workpiece; 4. Moving frame; 401. Laser cladding head; 5. Collection box; 501. Insert bar; 502. Connection groove; 503. Limiting spring; 6. Filter screen; 7. Connection plate; 8. Rotating shaft; 801. Block; 802. Slot; 9. Gear; 901. Card slot; 10. Rack; 11. Traction rope; 12. Support plate; 1201. Magnetic plate; 1202. Vertical rod; 13. Vertical shaft; 14. Limiting block; 15. Pulling rope; 16. Positioning block; 1601. Inclined surface; 17. Torsion spring; 18. Vertical rod; 19. Drum; 1901. Inclined groove; 1902. Extrusion surface; 20. Depression; 21. Pull rod; 22. Pressing rod; 2201. Convex block. Detailed implementation manners

[0034] As Figures 1 - 10 shown, a laser cladding powder collection device and collection method include a base plate 1. Brackets 2 are provided at both ends of the base plate 1. Specifically, one of the brackets 2 is slidably engaged with the base plate 1, so that this bracket 2 can move along the length direction of the base plate 1, and the other bracket 2 is fixedly engaged with the base plate 1. A chuck 201 for clamping the workpiece 3 is rotatably installed inside the bracket 2. Of course, clamping jaws (not shown in the figure) for clamping the workpiece 3 are provided on the chuck 201. A moving frame 4 is slidably assembled on one side of the base plate 1, and a laser cladding head 401 is provided at a position near the top of the moving frame 4.

[0035] In order to collect the dropped metal powder, two collection boxes 5 are slidably assembled on the top of the bottom plate 1 in this solution. The above-mentioned laser cladding head 401 is located above the front collection box 5. A rotating shaft 8 is arranged between the two collection boxes 5. The collection box 5 is detachably connected to the rotating shaft 8 through a clamping component. A through groove 101 is opened on the bottom plate 1 along its length direction. The through groove 101 runs through the bottom plate 1 and the cross section of the through groove 101 is "⊥"-shaped. A limiting block 14 matched with the through groove 101 is arranged at the bottom position of the collection box 5. The limiting block 14 is elastically connected to the collection box 5. Through this structure, the collection box 5 can slide along the length direction of the bottom plate 1;

[0036] Furthermore, a filter screen 6 is fixedly installed by bolts inside the collection box 5 and near the upper position for filtering impurities in the metal powder. A support plate 12 is elastically connected to the bottom end inside the collection box 5. The support plate 12 can move vertically relative to the collection box 5. In order for the collection box 5 to move with the laser cladding head 401, a connecting plate 7 is arranged at the bottom of the bottom plate 1 in this solution. The rotating shaft 8 passes through the connecting plate 7 and is rotationally matched with the connecting plate 7 through a tapered roller bearing. The connecting plate 7 is fixedly connected to the above-mentioned moving frame 4. Through this structure, when the laser cladding head 401 moves, the rotating shaft 8 can be driven to move synchronously through the connecting plate 7, and then the two collection boxes 5 are driven to move synchronously through the rotating shaft 8.

[0037] In order to be able to swap the positions of the two collection boxes 5, a gear 9 is sleeved outside the rotating shaft 8 in this solution. The gear 9 is located above the connecting plate 7. In the initial state, the gear 9 can rotate relative to the rotating shaft 8. As the metal powder inside the collection box 5 gradually increases, the support plate 12 is pressed downward to move, so that the rotating shaft 8 can be clamped with the gear 9. A rack 10 meshing with the gear 9 is fixedly arranged at the position near the lower part of the inner wall of the through groove 101. When the gear 9 is clamped with the rotating shaft 8, during the movement of the rotating shaft 8, the gear 9 meshes with the rack 10 and rotates, and then the rotating shaft 8 is driven to rotate by the gear 9, which is beneficial to swapping the positions of the two collection boxes 5, so that the collection box 5 in the no-load state rotates to the position below the laser cladding head 401. In addition, during the process of the fully loaded collection box 5 rotating 180° so that the limiting block 14 below it is inserted into the through groove 101 again, the clamping component on this collection box 5 is disengaged from the rotating shaft 8, so that the fully loaded collection box 5 can be disengaged from the rotating shaft 8, which is beneficial to taking it out.

[0038] Such as Figures 5 - 9 、 Figure 12As shown, a recess 20 is provided on one side of the collection box 5 close to the rotating shaft 8, so that the collection box 5 can fit on the outer side of the rotating shaft 8. The above-mentioned clamping component includes an insertion bar 501 fixed to the inner wall of the recess 20. Positioning blocks 16 are elastically connected to both side surfaces of the insertion bar 501. The side of the positioning block 16 away from the collection box 5 is provided with an inclined surface 1601. A slot 802 matching the insertion bar 501 and the positioning block 16 is formed on the outer wall of the rotating shaft 8. Refer to Figure 13 As shown, the cross-section of the slot 802 is T-shaped. Specifically, when the insertion bar 501 is completely inserted into the slot 802, the positioning block 16 can pop out, and then the insertion bar 501 is locked in the slot 802.

[0039] A winding drum 19 is rotatably installed at the bottom surface of the collection box 5. The winding drum 19 is connected to the collection box 5 through a torsion spring 17. A traction rope 11 is fixedly arranged between the winding drum 19 and the positioning block 16. The traction rope 11 passes through the collection box 5 and the insertion bar 501 and is slidably matched with both of them. The above-mentioned limit block 14 is located below the winding drum 19 and is coaxially arranged with the winding drum 19. An inclined slot 1901 is formed in the inner wall of the winding drum 19. Of course, the inclined slot 1901 is in an inclined state. A telescopic unit is elastically connected to the limit block 14. When one end of the telescopic unit is inserted into the inclined slot 1901 and moves downward, the telescopic unit can drive the winding drum 19 to rotate, and then the traction rope 11 is wound by the winding drum 19, and the positioning block 16 can be pulled to contract into the insertion bar 501, so that the insertion bar 501 can be separated from the slot 802;

[0040] A vertical shaft 13 is fixedly arranged on the support plate 12. The vertical shaft 13 is coaxially arranged with the winding drum 19. The bottom end of the vertical shaft 13 can extend downward into the winding drum 19. Specifically, as the metal powder accumulated on the top of the support plate 12 gradually increases, the support plate 12 is pressed downward, so that the vertical shaft 13 can further move downward and enter the limit block 14 and coincide with the telescopic unit. At this time, the telescopic unit can protrude outward under the extrusion of the outer wall of the vertical shaft 13 and cooperate with the inclined slot 1901. Through this structure, only the telescopic unit at the fully loaded collection box 5 can cooperate with the inclined slot 1901 on the inner wall of the winding drum 19, so that the fully loaded collection box 5 can be separated from the rotating shaft 8.

[0041] When one of the collection boxes 5 is filled with metal powder, it is necessary for the gear 9 to be able to engage with the rotating shaft 8. To achieve this effect, in this solution, a magnetic plate 1201 is fixedly arranged on one side of the support plate 12 close to the rotating shaft 8. The magnetic plate 1201 can move up and down relative to the collection box 5. A pull rod 21 is elastically connected to the outer wall of the rotating shaft 8 near the magnetic plate 1201. The pull rod 21 can move along the diameter direction of the rotating shaft 8. The pull rod 21 is made of a magnet, and the surface of the pull rod 21 opposite to the magnetic plate 1201 has the same magnetic pole. A latch 801 is elastically connected to the outer wall of the rotating shaft 8 at the position of the gear 9, and a slot 901 that matches the latch 801 is provided on the inner wall of the gear 9. A pull rope 15 is fixedly arranged between the latch 801 and the pull rod 21. The pull rope 15 passes through the rotating shaft 8 and is in sliding fit with it. As the metal powder on the top of the support plate 12 gradually increases, the support plate 12 is pressed downward. When the magnetic plate 1201 is aligned with the pull rod 21, the repulsive force of the magnetic plate 1201 on the pull rod 21 can cause the pull rod 21 to gradually contract into the rotating shaft 8, and the pull rope 15 is released, so that the latch 801 can pop out and insert into the slot 901.

[0042] Refer to Figure 1 , Figure 3 As shown, inclined guiding surfaces 1011 are provided at both edges of the top of the through groove 101. With this structure, when the rotating shaft 8 drives the collection box 5 to rotate, the limiting block 14 at the bottom of the collection box 5 can contact the guiding surface 1011. Through the guiding surface 1011, the limiting block 14 can be extruded to move upward, so that the limiting block 14 can move out of the through groove 101.

[0043] Refer to Figure 1 In the state shown, the laser cladding head 401 is aligned with one of the front collection boxes 5. At this time, the powder that falls during the cladding process will fall into the front collection box 5 and finally accumulate on the support plate 12. Since the moving frame 4 is connected to the rotating shaft 8 through the connecting plate 7, the collection box 5 can move synchronously with the laser cladding head 401. In the initial state, the latch 801 does not cooperate with the slot 901 on the gear 9. At this time, the gear 9 meshes with the rack 10 and is in a state of rotating independently;

[0044] As the use time increases, the metal powder on the support plate 12 gradually increases, causing the support plate 12 to be pressed and gradually move downward, and when the support plate 12 moves downward, it can drive the magnetic plate 1201 to move downward synchronously. When the magnetic plate 1201 is aligned with the pull rod 21 on the rotating shaft 8, the repulsive force of the magnetic plate 1201 on the pull rod 21 can cause the pull rod 21 to loosen the pull rope 15, so that the card block 801 can pop out, and when the card slot 901 on the gear 9 is aligned with the card block 801, the card block 801 can pop out and be inserted into the card slot 901, so that the gear 9 can The movable frame 4 drives the connecting plate 7 to move, and the engagement of the gear 9 and the rack 10 can drive the rotating shaft 8 to rotate, so that the limit block 14 at the bottom of the collecting box 5 can be moved out of the through slot 101, and the guide surface 1011 squeezes the limit block 14 to cause the limit block 14 to move upward. Since the support plate 12 at the fully loaded collecting box 5 moves downward for a distance, the vertical axis 13 at the support plate 12 can move downward to the limit block 14. Therefore, when the limit block 14 is pushed upward by the guide surface 1011, the limit block 14 is The telescopic unit can be squeezed outward by the vertical shaft 13, so that one end of the telescopic unit can be inserted into the inclined slot 1901. Specifically, when the fully loaded collection box 5 is rotated 180 degrees so that the limit block 14 is reinserted into the through slot 101, one end of the telescopic unit on the limit block 14 can move downward along the inclined slot 1901, thereby driving the reel 19 to rotate. The reel 19 can be used to reel the traction rope 11, so that the traction rope 11 can pull the positioning block 16 to retract into the insertion strip 501, so that the insertion strip 501 can be removed from the slot 802, so that the fully loaded collection box 5 can be collected. The box 5 can be separated from the rotating shaft 8, but the support plate 12 on the empty collection box 5 does not move downward, so that the telescopic unit on the limit block 14 cannot cooperate with the vertical axis 13 at the bottom of the support plate 12. Therefore, the empty collection box 5 is still in a locked state with the rotating shaft 8 after rotating 180°. At this point, the fully loaded collection box 5 rotates 180° and disengages from the rotating shaft 8, and the empty collection box 5 rotates to the bottom of the laser cladding head 401 and remains locked with the rotating shaft 8, so that the staff has sufficient time to process the fully loaded collection box 5.

[0045] like Figure 1 As shown, a motor can be installed at the bracket 2, and the output shaft of the motor is connected to the chuck 201 for driving the chuck 201 to rotate. In order to drive one of the brackets 2 to move, a screw rod and a slider can be used to drive the bracket 2 to move. Of course, a hydraulic drive method can also be used to drive the bracket 2 to move. Similarly, the above two methods can also be used to drive the movable frame 4 to move. Since the above driving methods are mature technical means in the mechanical field, they will not be elaborated here.

[0046] like Figures 1 - 8 、 Figure 12As shown, a through hole for the traction rope 11 to pass through is provided on the magnetic plate 1201, so that the traction rope 11 can slide relative to the magnetic plate 1201. A connecting groove 502 that slidably cooperates with the magnetic plate 1201 is provided on the collecting box 5. In addition, referring to Figure 6 As shown, a baffle (not shown in the figure) can be fixedly installed on the magnetic plate 1201, and the baffle fits against the inner wall of the collecting box 5, so as to prevent the metal powder from leaking out through the connecting groove 502.

[0047] A first notch that slidably cooperates with the pull rod 21 is provided on the outer wall of the rotating shaft 8. A first spring is fixedly arranged between the inner end face of the first notch and the pull rod 21. In addition, a second notch that slidably cooperates with the block 801 is also provided on the outer wall of the rotating shaft 8. A spring is fixedly arranged between the inner end face of the second notch and the block 801.

[0048] A vertical rod 1202 is fixedly connected to the bottom surface of the support plate 12. The vertical rod 1202 extends downward into the collecting box 5 and slidably cooperates with the collecting box 5. A support spring is sleeved outside the vertical rod 1202, and the support spring is located between the support plate 12 and the bottom surface of the collecting box 5. As the metal powder on the top of the support plate 12 gradually increases, the support plate 12 can move downward against the pressure of the support spring. When the magnetic plate 1201 moves to the bottom of the connecting groove 502, the support plate 12 moves downward to the limit position, and the magnetic plate 1201 is aligned with the pull rod 21.

[0049] The limiting block 14 is of a ring structure, and a circular hole is provided on the bottom surface of the collecting box 5, so that the reel 19 is rotatably installed in the circular hole. An annular installation groove for accommodating the coil spring 17 is provided on the inner wall of the circular hole, so that both ends of the coil spring 17 are fixedly connected to the outer wall of the reel 19 and the inner wall of the installation groove respectively. The end of the above-mentioned traction rope 11 fixed to the reel 19 is located in the installation groove. During actual use, the reel 19 can cooperate with the collecting box 5 through a one-way bearing, so that the reel 19 can only rotate in one direction relative to the collecting box 5. Through this structure, when the telescopic unit moves upward relative to the reel 19, the reel 19 can remain stable.

[0050] The bottom end of the above-mentioned vertical shaft 13 passes through the collecting box 5 and extends into the circular hole. A vertical rod 18 is fixedly arranged on the inner top wall of the circular hole, and a circular hole that slidably cooperates with the vertical rod 18 is provided on the top end face of the limiting block 14. A second spring is sleeved outside the vertical rod 18, and both ends of the second spring are fixedly connected to the top wall of the circular hole and the limiting block 14 respectively.

[0051] Referring to Figure 9 As shown, a groove that slidably cooperates with the positioning block 16 is provided on the insert bar 501. A third spring is fixedly arranged between the inner end face of the groove and the positioning block 16.

[0052] Referring to Figure 10As shown, an inclined extrusion surface 1902 is provided at the upper side edge outside the inclined groove 1901. With this structure, when the telescopic unit moves upward relative to the reel 19, one end of the telescopic unit can contact this extrusion surface 1902, so that the telescopic unit contracts into the limit block 14, thereby avoiding interference between the telescopic unit and the inclined groove 1901 when moving upward.

[0053] Referring to Figure 11 As shown, the telescopic unit includes a pressure rod 22 elastically connected to the limit block 14. A convex block 2201 is elastically connected to the outer end face of the pressure rod 22. Specifically, a through "cross" groove is formed in the outer wall of the limit block 14, and the pressure rod 22 is also set in a "cross" shape, so that the pressure rod 22 slides in the "cross" groove. Extrusion springs are provided between the two protruding parts of the upper and lower parts of the pressure rod 22 and the end faces of the "cross" groove. The end of the pressure rod 22 away from the convex block 2201 is of a spherical or conical structure. When the vertical shaft 13 moves downward to the limit block 14, the vertical shaft 13 can squeeze the spherical or conical surface of the pressure rod 22, so that the pressure rod 22 moves outward against the pressure of the extrusion spring, and then the convex block 2201 is extruded so that the convex block 2201 contacts the inner wall of the reel 19. A chute for slidingly matching with the convex block 2201 is formed at the end of the pressure rod 22, and a fourth spring is fixedly arranged between the inner end face of the chute and the convex block 2201.

[0054] When the insert 501 is disengaged from the rotating shaft 8, in order to further promote the separation of the collection box 5 from the rotating shaft 8, limiting springs 503 are fixedly embedded in both side walls of the collection box 5. The limiting springs 503 on the two collection boxes 5 are arranged staggeredly. In the initial state, both collection boxes 5 are clamped with the rotating shaft 8. At this time, the limiting springs 503 on the two collection boxes 5 are both compressed. When the fully loaded collection box 5 rotates 180°, the insert 501 can be disengaged from the rotating shaft 8. At this time, the elastic force of the limiting spring 503 can accelerate the separation of the fully loaded collection box 5 from the rotating shaft 8, so that the pull rod 21 can be reset in time, so that the latch 801 can be disengaged from the gear 9, thereby avoiding the limit block 14 at the bottom of the empty collection box 5 from moving out of the through groove 101. In actual use, this effect can also be achieved by increasing the width of the guiding surface 1011. At this time, during actual use, balls can be installed on the bottom surface of the collection box 5 to reduce the friction between the collection box 5 and the bottom plate 1.

Claims

1. A laser cladding powder collection device, comprising a bottom plate, on the top of the bottom plate there are two collection boxes slidably assembled, and a rotating shaft is arranged between the two collection boxes, characterized in that: The collection box is detachably connected to the rotating shaft through a clamping component. A through groove is formed in the bottom plate. Guide surfaces are provided at both edges of the top of the through groove. A limiting block matching the through groove is provided at the bottom of the collection box. A support plate is elastically connected to the inner bottom end of the collection box. A gear is sleeved on the outer side of the rotating shaft. A rack meshing with the gear is fixedly arranged on the inner wall of the through groove. As the metal powder in the collection box gradually increases, the support plate is pressed downward to move, so that the rotating shaft can be clamped with the gear. When the rotating shaft is driven to rotate by the meshing of the gear and the rack, the two collection boxes can rotate with the rotating shaft. When the limiting block below the collection box carrying the metal powder is reinserted into the through groove during the rotation process, the clamping component on this collection box can be disengaged from the rotating shaft. The clamping component includes an insertion bar fixedly connected to the collection box. Positioning blocks are elastically connected to both side surfaces of the insertion bar. The side of the positioning block away from the collection box is set as an inclined surface. A slot matching the insertion bar and the positioning block is formed in the outer wall of the rotating shaft. A winding drum is rotatably installed at the bottom surface of the collection box. The winding drum is connected to the collection box through a coil spring. A traction rope is fixedly arranged between the winding drum and the positioning block. The limiting block is located below the winding drum and is coaxially arranged with the winding drum. An inclined slot is formed in the inner wall of the winding drum. A telescopic unit is elastically connected to the limiting block. When one end of the telescopic unit is inserted into the inclined slot and moves downward, the winding drum can be driven to rotate through the telescopic unit. A vertical shaft is fixedly arranged on the support plate. The vertical shaft is coaxially arranged with the winding drum. The bottom end of the vertical shaft can extend downward into the winding drum. A magnetic plate is fixedly arranged on the side surface of the support plate close to the rotating shaft. The magnetic plate can move in the vertical direction relative to the collection box. A pull rod is elastically connected to the position of the outer wall of the rotating shaft close to the magnetic plate. The pull rod is made of a magnet, and the surface of the pull rod opposite to the magnetic plate has the same magnetic pole. A clamping block is elastically connected to the position of the outer wall of the rotating shaft where the gear is located. A clamping slot matching the clamping block is formed in the inner wall of the gear. A pull rope is fixedly arranged between the clamping block and the pull rod.

2. The laser cladding powder collection device according to claim 1, characterized in that: A recessed portion is provided on one side of the collection box close to the rotating shaft, so that the collection box can be attached to the outer side of the rotating shaft. The insertion bar is fixed to the inner wall of the recessed portion.

3. The laser cladding powder collection device according to claim 1, characterized in that: A moving frame is slidably assembled on one side of the bottom plate, and a laser cladding head is arranged at a position close to the top end of the moving frame.

4. The laser cladding powder collection device according to claim 3, characterized in that: A connecting plate is arranged at the bottom of the bottom plate. The rotating shaft passes through the connecting plate and is rotatably matched with the connecting plate. The connecting plate is fixedly connected to the moving frame.

5. The laser cladding powder collection device according to claim 1, characterized in that: A filter screen is installed at a position close to the upper part inside the collection box.

6. A method for collecting powder using the laser cladding powder collection device according to any one of claims 1-5, characterized in that, It includes the following steps: Collect metal powder through one of the collection boxes. When one of the collection boxes is full, the rotating shaft can be clamped with the gear. Drive the rotating shaft to rotate through the gear, so that the rotating shaft can drive the two collection boxes to rotate, so as to exchange the positions of the two collection boxes, so that the empty collection box can maintain the state of being clamped with the rotating shaft and collect metal powder, while the full collection box is disconnected from the rotating shaft.

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