Laser cladding device with a quantitative powder dispensing mechanism

Abstract

This invention discloses a laser cladding device with a quantitative powder dispensing mechanism, comprising a base (1), rotating clamping mechanisms (2) on both sides of the base (1), a pad block (3) on the rear side of the base (1), an electric cylinder (4) on the pad block (3), a support column (5) on the moving end of the electric cylinder (4), a support side plate (6) on the upper end of the support column (5), a feeding cylinder (7) on the support side plate (6), a sliding groove (8) on the support side plate (6), a sliding plate (9) inside the sliding groove (8), a moving cylinder (9) on the support side plate (6), a connecting plate (10) on the extended end of the moving cylinder (9), and a connecting rod (11) on one side of the connecting plate (10). This invention can quantitatively control the feeding amount of metal powder, minimizing powder waste.

Description

Technical Field

[0001] This invention relates to the field of laser cladding equipment, and particularly to a laser cladding device with a quantitative powder dispensing mechanism. Background Art

[0002] Laser cladding is a processing method that uses a high-energy laser heat source to melt specific powder materials in the focal area, fuse them with the substrate, and solidify to form a solid after the beam leaves. The most advanced existing laser cladding equipment, such as Chinese invention patent CN114262893A, discloses a laser cladding device for the surface of shaft-type workpieces. This device includes a laser generator with a laser generating end on its front surface, a transmission table on one side of the laser generator, a crossbeam base on the transmission table, a mounting plate on one side of the upper surface of the crossbeam base, a first laser transmission tube between the mounting plate and the laser generating end, a first reflecting lens on the other side of the upper surface of the crossbeam base opposite the mounting plate, a laser interruption mechanism between the first reflecting lens and the mounting plate, a crossbeam on one side wall of the crossbeam base, a laser focusing mechanism on the crossbeam, a second laser transmission tube between the laser focusing mechanism and the first reflecting lens, a powder feeding mechanism on the side wall of the laser focusing mechanism, and a material placement mechanism directly below the laser focusing mechanism. The powder feeding mechanism involves a powder feeding motor that drives the powder feeding disc to rotate, causing the metal powder on the disc to enter the powder feeding port and then into the pipe. The main purpose of this powder feeding mechanism is to ensure uniform powder feeding so that the powder falling from the pipe is evenly sprinkled on the shaft. However, it cannot effectively control the amount of powder fed in, and some powder will still be wasted. Summary of the Invention

[0003] The purpose of this invention is to provide a laser cladding device with a quantitative powder dispensing mechanism. This invention can quantitatively control the amount of metal powder fed, minimizing powder waste.

[0004] The technical solution of this invention: A laser cladding device with a quantitative powder dispensing mechanism includes a base, rotating clamping mechanisms on both sides of the base, a pad block on the rear side of the base, an electric cylinder on the pad block, a support column on the moving end of the electric cylinder, a support side plate on the upper end of the support column, a feeding cylinder on the support side plate, a sliding groove on the support side plate, a sliding plate inside the sliding groove, a moving cylinder on the support side plate, a connecting plate on the extended end of the moving cylinder, a connecting rod on one side of the connecting plate, one end of the connecting rod connected to one end of the sliding plate, a quantitative box on the sliding plate, the upper inlet of the quantitative box corresponding to the lower outlet of the feeding cylinder, a hinged switch plate at the bottom end of the quantitative box, a hopper on the side of the support column, the outlet end of the quantitative box cooperating with the hopper; a fixed plate on the front side of the support column, a laser emitting head connected to a laser generator at the end of the fixed plate, the bottom of the hopper connected to the laser emitting head via a pipeline and a compressor; a circulating cooling mechanism on the side of the support column, the output end of the circulating cooling mechanism connected to the laser emitting head.

[0005] In the aforementioned laser cladding device with a quantitative powder dispensing mechanism, the base has inclined surfaces on both sides, and a powder collection trough is provided at the bottom of the base near the lower end of the inclined surfaces.

[0006] In the aforementioned laser cladding device with a quantitative powder dispensing mechanism, the bottom of the feeding cylinder has a detachable structure.

[0007] In the aforementioned laser cladding device with a quantitative powder dispensing mechanism, the laser emitting head includes a main body, a nozzle at the end of the main body, an outer sleeve on the outside of the nozzle, a fixing member on the outside of the outer sleeve, the outer sleeve being fitted to the main body via the fixing member, a cooling chamber inside the nozzle, and water inlet and outlet channels communicating with the cooling chamber on both sides of the main body, respectively. A water inlet interface is located on the outside of the water inlet channel, and a water outlet interface is located on the outside of the water outlet channel. A condensation tank and a water pump are connected to each other on the side of the support column. The outlet end of the water pump is connected to the water inlet interface via a pipeline, and the inlet end of the condensation tank is connected to the water outlet interface via a pipeline. A powder dispensing channel is formed between the nozzle and the outer sleeve. A powder inlet channel is provided on the main body, and the powder outlet channel is connected to the powder inlet channel. The powder inlet channel is connected to the hopper via a connecting pipeline.

[0008] In the aforementioned laser cladding device with a quantitative powder dispensing mechanism, the bottom of the hopper is provided with a sloping section.

[0009] In the aforementioned laser cladding device with a quantitative powder dispensing mechanism, reinforcing ribs are provided between the fixed plate and the support column.

[0010] In the aforementioned laser cladding device with a quantitative powder dispensing mechanism, the upper edge of the hopper is provided with a transition arc.

[0011] Compared with the prior art, the present invention has the following advantages:

[0012] 1. In this invention, the workpiece is clamped by a rotating clamping mechanism, metal powder is poured into a feeding cylinder, a moving cylinder is activated, and a metering box is moved to the bottom of the feeding cylinder. Powder enters the metering box, and the metering box is filled. The moving cylinder is activated again, and the metering box is moved above the hopper. At this time, the switch plate at the bottom of the metering box rotates and opens, and the powder falls into the hopper. One metering box is considered one unit quantity. According to the actual processing situation, the corresponding unit quantity of powder is added to the hopper. Then, the laser emitting head is activated, and the metal powder in the hopper is input into the laser emitting head through a compressor, and then the cladding begins. By controlling the amount of metal powder used, the amount of metal powder is limited according to the actual usage in the processing process, avoiding waste of metal powder and achieving a saving effect.

[0013] 2. The machine base has inclined surfaces on both sides, and a powder collection trough is provided at the bottom of the machine base near the lower end of the inclined surfaces. During the workpiece cladding process, some powder will inevitably fall out. The powder falls into the powder collection trough through the inclined surfaces, effectively collecting the powder.

[0014] 3. Cooling water is introduced into the cooling chamber of the nozzle inside the laser emitter head. The cooling water enters the cooling chamber through the water inlet channel and then flows out through the water outlet channel, forming a circulating cooling process, which plays a certain role in cooling the nozzle. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention;

[0016] Figure 2 This is a schematic diagram of a sliding groove;

[0017] Figure 3 This is a schematic diagram of the switchboard;

[0018] Figure 4 This is a schematic diagram of the nozzle;

[0019] Figure 5 This is a schematic diagram of the powder outlet channel.

[0020] Explanation of markings in the attached diagram: 1-Base, 2-Rotating clamping mechanism, 3-Padded block, 4-Electric cylinder, 5-Support column, 6-Support side plate, 7-Discharge cylinder, 8-Sliding groove, 9-Moving cylinder, 10-Connecting plate, 11-Connecting rod, 12-Quantitative box, 13-Switch plate, 14-Hopper, 15-Fixed plate, 16-Laser emitter, 17-Circulating cooling mechanism, 18-Inclined surface, 19-Powder collection tank, 20-Main body, 21-Nozzle, 22-Outer jacket, 23-Fixed component, 24-Cooling chamber, 25-Water inlet channel, 26-Water outlet channel, 27-Water inlet interface, 28-Water outlet interface, 29-Condensation box, 30-Water pump, 31-Powder outlet channel, 32-Powder inlet channel, 33-Reinforcing rib, 34-Transition arc, 35-Sliding plate, 141-Inclined surface. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the invention.

[0022] Example: A laser cladding device with a quantitative powder dispensing mechanism, including a base 1, as shown in the attached figure. Figure 1 As shown, the machine base 1 has rotating clamping mechanisms 2 on both sides. A pad block 3 is located on the rear side of the machine base 1. An electric cylinder 4 is mounted on the pad block 3. A support column 5 is mounted on the moving end of the electric cylinder 4. A support side plate 6 is mounted on the upper end of the support column 5. A feeding cylinder 7 is mounted on the support side plate 6. The bottom of the feeding cylinder 7 is detachable. Different workpieces have different materials, so it is necessary to select the corresponding metal powder. The feeding cylinder needs to be cleaned to avoid mixing the previous metal powder with the new one. Therefore, cleaning the feeding cylinder from the rear is more convenient. A sliding groove 8 is provided on the support side plate 6, and a sliding plate 35 is provided inside the sliding groove 8, as shown in the attached diagram. Figure 2 As shown, a movable cylinder 9 is provided on the supporting side plate 6. A connecting plate 10 is provided at the extended end of the movable cylinder 9. A connecting rod 11 is provided on one side of the connecting plate 10. One end of the connecting rod 11 is connected to one end of the sliding plate 35. A metering box 12 is provided on the sliding plate 35. The upper inlet of the metering box 12 corresponds to the lower outlet of the feeding cylinder 7. A hinged switch plate 13 is provided at the bottom of the metering box 12. Figure 3As shown, a hopper 14 is provided on the side of the support column 5. The bottom of the hopper 14 has an inclined surface 141, allowing the powder to slide down quickly. The outlet end of the metering box 12 cooperates with the hopper 14. The moving cylinder drives the metering box to move outward. At this time, the metering box is connected to the upper discharge cylinder. The powder enters the metering box, and the upper end of the hopper presses against the switch plate, which seals the bottom of the metering box. When discharging, the moving cylinder drives the metering box to move inward. At this time, the switch plate opens after being resisted by the upper end of the hopper, and the material falls into the hopper. Inside the hopper; a fixed plate 15 is provided on the front side of the support column 5, and a reinforcing rib 33 is provided between the fixed plate 15 and the support column 5 to improve the strength and rigidity of the fixed plate. A laser emitting head 16 connected to the laser generator is provided at the end of the fixed plate 15. The bottom of the hopper 14 is connected to the laser emitting head 16 through pipelines and a compressor. The powder in the hopper enters the laser emitting head through the compressor. A circulating cooling mechanism 17 is provided on the side of the support column 5, and the output end of the circulating cooling mechanism 17 is connected to the laser emitting head 16. The rotating clamping mechanism clamps the workpiece, and the electric cylinder drives the laser emitting head to move laterally and perform cladding. When the lateral part of the workpiece is clad, the rotating clamping mechanism rotates a certain angle, and the electric cylinder drives the laser emitting head to perform cladding again. The machine base 1 has inclined surfaces 18 on both sides, and a powder collection tank 19 is provided at the bottom of the machine base 1 and near the lower end of the inclined surface 18. During the workpiece cladding process, some powder will inevitably fall out. The powder falls into the powder collection tank through the inclined surface, effectively collecting the powder. The upper edge of the hopper 14 is provided with a transition arc 34, which allows the switch plate to slide more smoothly when it comes into contact with the upper edge of the hopper.

[0023] The laser emitting head 16 includes a main body 20, and a nozzle 21 is provided at the end of the main body 20, as shown in the attached figure. Figure 4 and 5As shown, the nozzle 21 has an outer sleeve 22, and the outer sleeve 22 has a fixing member 23. The outer sleeve 22 is attached to the main body 20 through the fixing member 23. The nozzle 21 has a cooling chamber 24. The main body 20 has a water inlet channel 25 and a water outlet channel 26 on both sides, which are connected to the cooling chamber 24. The inner end of the other channel is provided with a sealing ring. The outer side of the water inlet channel 25 is provided with a water inlet interface 27, and the outer side of the water outlet channel 26 is provided with a water outlet interface 28. The side of the support column 5 is provided with a condenser box 29 and a water pump 30 connected to each other. The outlet end of the water pump 30 is connected to the water inlet interface 27 through a pipeline, and the inlet end of the condenser box 29 is connected to the water outlet interface 28 through a pipeline. The cooling water in the condenser box is driven by the water pump into the water inlet channel, then into the cooling chamber, and then returns to the condenser box through the water outlet channel, forming a cooling cycle. The laser beam will pass through the nozzle, and a large amount of heat will be generated at the outer sleeve. In order to cool the nozzle, a circulating cooling structure is set up. A powder outlet channel 31 is formed between the nozzle 21 and the outer sleeve 22. The main body 20 is provided with a powder inlet channel 32. The powder outlet channel 31 and the powder inlet channel 32 are connected. The powder inlet channel 32 is connected to the hopper 14 via a connecting pipe. The powder outlet channel can be changed by replacing different models of outer sleeves to change the amount of powder sprayed.

[0024] The working principle of this invention is as follows: The workpiece is clamped by a rotating clamping mechanism, and metal powder is poured into the feeding cylinder. The moving cylinder is activated, moving the metering box below the feeding cylinder. Powder enters the metering box, and the metering box is filled. The moving cylinder is activated again, moving the metering box above the hopper. At this time, the switch plate at the bottom of the metering box rotates and opens, and the powder falls into the hopper. One metering box is considered one unit quantity. According to the actual processing situation, the corresponding unit quantity of powder is added to the hopper. Then, the laser emitting head is activated, and the metal powder in the hopper is fed into the laser emitting head through the compressor, thus starting the cladding process. By controlling the amount of metal powder used, the amount of metal powder is limited according to the actual usage during the processing, avoiding waste of metal powder and achieving a saving effect.

Claims

1. A laser cladding device with a quantitative powder dispensing mechanism, comprising a base (1), wherein rotating clamping mechanisms (2) are provided on both sides of the base (1), characterized in that: The machine base (1) is provided with a pad block (3) on the rear side. An electric cylinder (4) is provided on the pad block (3). A support column (5) is provided on the moving end of the electric cylinder (4). A support side plate (6) is provided on the upper end of the support column (5). A feeding cylinder (7) is provided on the support side plate (6). A sliding groove (8) is provided on the support side plate (6). A sliding plate (35) is provided in the sliding groove (8). A moving cylinder (9) is provided on the support side plate (6). A connecting plate (10) is provided at the extended end of the moving cylinder (9). A connecting rod (11) is provided on one side of the connecting plate (10). One end of the connecting rod (11) is connected to one end of the sliding plate (35). A metering box (12) is provided on the sliding plate (35). The upper inlet of the box (12) corresponds to the lower outlet of the feeding cylinder (7). The bottom of the metering box (12) is provided with a hinged switch plate (13). The side of the support column (5) is provided with a hopper (14). The outlet end of the metering box (12) is connected to the hopper (14). The front side of the support column (5) is provided with a fixed plate (15). The end of the fixed plate (15) is provided with a laser emitting head (16) connected to the laser generator. The bottom of the hopper (14) is connected to the laser emitting head (16) through a pipeline and a compressor. The side of the support column (5) is provided with a circulating cooling mechanism (17). The output end of the circulating cooling mechanism (17) is connected to the laser emitting head (16). The laser emitter (16) includes a main body (20), a nozzle (21) at the end of the main body (20), an outer sleeve (22) on the outside of the nozzle (21), a fixing member (23) on the outside of the outer sleeve (22), the outer sleeve (22) being attached to the main body (20) via the fixing member (23), a cooling chamber (24) inside the nozzle (21), and water inlet channels (25) and water outlet channels (26) communicating with the cooling chambers (24) on both sides of the main body (20), a water inlet interface (27) on the outside of the water inlet channel (25), and a water outlet interface (26) on the outside of the water outlet channel (26). The side is provided with a water outlet (28); the side of the support column (5) is provided with a condenser box (29) and a water pump (30) connected to each other. The outlet end of the water pump (30) is connected to the water inlet (27) via a pipeline, and the inlet end of the condenser box (29) is connected to the water outlet (28) via a pipeline; the nozzle (21) and the outer jacket (22) form a powder outlet channel (31), and the main body (20) is provided with a powder inlet channel (32). The powder outlet channel (31) and the powder inlet channel (32) are connected. The powder inlet channel (32) is connected to the silo (14) via a connecting pipeline.

2. The laser cladding device with a quantitative powder dispensing mechanism according to claim 1, characterized in that: The base (1) has inclined surfaces (18) on both sides, and a powder collection trough (19) is provided at the bottom of the base (1) and near the lower end of the inclined surfaces (18).

3. The laser cladding device with a quantitative powder dispensing mechanism according to claim 1, characterized in that: The bottom of the feeding cylinder (7) is a detachable structure.

4. The laser cladding device with a quantitative powder dispensing mechanism according to claim 1, characterized in that: The bottom of the hopper (14) is provided with a sloping surface (141).

5. The laser cladding device with a quantitative powder dispensing mechanism according to claim 1, characterized in that: The fixed plate (15) and the support column (5) are provided with reinforcing ribs (33).

6. The laser cladding device with a quantitative powder dispensing mechanism according to claim 1, characterized in that: The upper edge of the hopper (14) is provided with a transition arc (34).

Images