CN115927996A - Cobalt-based tungsten carbide composite material surface coating equipment - Google Patents

Abstract

The invention relates to the technical field of surface treatment equipment, and provides surface coating equipment for a cobalt-based tungsten carbide composite material. Cobalt-based tungsten carbide composite surface coating equipment includes subassembly and the last subassembly of installation below subassembly top down, and the work piece of treating the spraying is placed down on the subassembly, it includes the mounting panel to go up the subassembly, and installs spraying assembly and stoving subassembly on the mounting panel, stoving subassembly and spraying assembly interval set up and can rotate for spraying assembly, stoving subassembly is including the cover establish rotation seat, slidable on the spraying assembly are installed rotate the sliding seat on the seat, and install stoving head on the sliding seat.

Description

Cobalt-based tungsten carbide composite material surface coating equipment

Technical Field

The invention relates to the technical field of surface treatment equipment, in particular to cobalt-based tungsten carbide composite material surface coating equipment.

Background

The cobalt-based tungsten carbide composite material is generally sprayed by adopting a high-temperature heat source to enable a powder material to reach a molten or semi-molten state, and then the powder material is sprayed on the surface of a workpiece to form a coating with special properties. At present, the cobalt-based tungsten carbide composite material spraying process is widely applied to the fields of aerospace, transportation, papermaking machinery, packaging, petrochemical industry and the like, and is used for spraying wear-resistant and corrosion-resistant coatings on workpieces and the like, so that the service life of the workpieces is prolonged. However, the existing cobalt-based tungsten carbide composite material surface coating equipment has the problems that the spraying angle of a spray head cannot be adjusted, the spraying and post-spraying drying efficiency is low, and the like.

Disclosure of Invention

In view of the above, it is an object of the present invention to provide a cobalt-based tungsten carbide composite facecoat device that alleviates or avoids the above-mentioned problems to some extent.

The invention provides cobalt-based tungsten carbide composite material surface coating equipment which comprises a lower assembly and an upper assembly arranged above the lower assembly, wherein a workpiece to be sprayed is placed on the lower assembly, the upper assembly comprises an installation plate, a spraying assembly and a drying assembly, the spraying assembly and the drying assembly are arranged on the installation plate, the drying assembly and the spraying assembly are arranged at intervals and can rotate relative to the spraying assembly, the drying assembly comprises a rotating seat sleeved on the spraying assembly, a sliding seat slidably arranged on the rotating seat, and a drying head arranged on the sliding seat.

In some embodiments, the mounting plate is provided with a notch, the notch is in a fan shape, the central angle of the notch is larger than 180 degrees, a concave part which is far away from the notch and is sunken is arranged at the top of the notch, and the spraying component is mounted on the upper side of the concave part.

In some embodiments, the spraying assembly comprises a sleeve mounted on the upper side of the concave part, a mounting barrel mounted on the end of the sleeve far away from the concave part, a spraying head mounted on the mounting barrel, and a driving assembly for driving the spraying head to ascend and descend.

In some embodiments, the sleeve is in the form of a hollow cylinder, the end of which remote from the recess is provided with a radially outwardly extending flange, the other end of which abuts against the upper side of the recess.

In some embodiments, the rotary seat is in a shape of a disk, a through hole is formed in the center of the rotary seat, the rotary seat is sleeved outside the sleeve of the spraying assembly through the through hole, and the stop is arranged between the flange and the mounting plate.

In some embodiments, the outer periphery of the rotating seat is provided with a bevel gear part engaged with a bevel gear, and the bevel gear drives the rotating seat to rotate.

In some embodiments, the rotating seat is further provided with a slide way arranged between the through hole and the bevel gear part, and a rack adjacent to the slide way, and the sliding seat is slidably arranged in the slide way.

In some embodiments, the spraying head passes through the concave part and is liftably mounted on the mounting cylinder through the driving assembly, the driving assembly comprises a first connecting column, a first bearing sleeved outside the first connecting column, a turbine and a second bearing, the turbine is rotatably supported between the first bearing and the second bearing, and the inner side of the turbine is provided with an internal thread engaged with the external thread of the first connecting column.

In some embodiments, the spray head is Y-shaped with a plurality of spray heads mounted thereon.

In some embodiments, the lower assembly includes a support on which the workpiece is placed and a transfer assembly mounted on the support, the transfer assembly being reciprocally movable relative to the support to effect reciprocal movement of the workpiece during the spray coating process.

The cobalt-based tungsten carbide composite material surface coating equipment provided by the invention can meet the requirement that the coating needs to be dried immediately after spraying, improves the drying efficiency and coating quality after spraying and spraying, and can adjust the spraying angle according to different workpieces.

Drawings

FIG. 1 shows a schematic perspective view of an apparatus for the surface coating of a cobalt-based tungsten carbide composite material according to an embodiment of the present invention.

Fig. 2 shows a perspective view of the coating device shown in fig. 1 in another direction.

Fig. 3 shows an exploded view of part of the components of the coating apparatus shown in fig. 1.

Fig. 4 shows a schematic sectional view of a part of the components of the coating apparatus shown in fig. 1, wherein an enlarged view of the part position is also shown.

Fig. 5 shows a schematic plan view of the upper mounting frame of the coating apparatus shown in fig. 1.

Fig. 6 shows a schematic cross-sectional view of a spray assembly of the coating apparatus shown in fig. 1.

Description of reference numerals: 300-a coating apparatus; 1-upper assembly; 11-a spray assembly; 110-a flange; 111-mounting the cartridge; 112-a first connecting post; 113-a first motor; 131-a worm; 114-a connecting plate; 115-a spray head; 511-ball head connection; 150-a communication section; 116-a sleeve; 161-a spacing pin; 162-a limit groove; 117-a first bearing; 118-a turbine; 119-a second bearing; 12-a drying component; 120-a sliding seat; 121-a rotating seat; 211-a slide; 212-a rack; 213-a bevel gear portion; 214-a via; 122-a second connecting column; 123-a drying head; 2-lower assembly; 100-a mounting plate; 101-a notch; 102-a recess; 200-support; 201-a transfer component; 21-a slide rail; 22-a second electric machine; 23-a drive wheel; 24-a scaffold; 25-a driven wheel; 26-workpiece.

Detailed Description

In order that the objects and advantages of the invention will be more clearly understood, the invention will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1 and 2, a cobalt-based tungsten carbide composite surface coating apparatus 300 according to an embodiment of the present invention includes an upper assembly 1 and a lower assembly 2. The upper assembly 1 can be mounted on the lower assembly 2 by means of respective supports; alternatively, the upper module 1 may be provided separately from the lower module 2, and the relative position between the two modules may be fixed when in use. The upper module 1 is used for painting the workpiece 26 placed on the lower module 2 and drying the painted portion.

The upper assembly 1 comprises a mounting plate 100, and a spraying assembly 11 and a drying assembly 12 which are mounted on the mounting plate 100, wherein the drying assembly 12 is arranged at a distance from the spraying assembly 11 and can rotate relative to the spraying assembly 11. Referring also to fig. 3-5, the mounting plate 100 is provided with a notch 101. Preferably, the notch 101 is substantially sector-shaped with a central angle greater than 180 °. At the top of the indentation 101 a recess 102 is provided, which is recessed away from the indentation 101, and the spray assembly 11 is mounted on the upper side of the recess 102 by means of corresponding parts. The spraying assembly 11 comprises a sleeve 116 mounted on the upper side of the concave part 102, a mounting cylinder 111 mounted on the end of the sleeve 116 far away from the concave part 102, a spraying head 115 mounted on the mounting cylinder 111, and a driving assembly for driving the spraying head 115 to ascend and descend. In this embodiment, the sleeve 116 is substantially hollow and cylindrical, and its end remote from the recess 102 is provided with a radially outwardly extending flange 110, and its other end abuts against the upper side of the recess 102, the sleeve 116 being fixed to the mounting plate 100 by means of corresponding connecting members, such as bolts, passing through the mounting plate 100. Preferably, a connecting plate 114 is mounted on the underside of the recess 102, and corresponding connectors, such as bolts, are connected through the connecting plate 114, the mounting plate 100 and the bottom of the sleeve 116, thereby more securely mounting the sleeve 116 on the mounting plate 100. The mounting cylinder 111 has a substantially hollow cylindrical shape and is mounted on the sleeve 116 by means of a bolt connection or a screw connection, which will not be described in detail.

In this embodiment, the spray head 115 is mounted on the mounting cylinder 111 through the recess 102 and is liftable by the driving assembly. The drive assembly includes a first connecting post 112, a first bearing 117 that fits over the outside of the first connecting post 112, a worm gear 118, and a second bearing 119. Referring also to fig. 2-6, the first connecting post 112 is a hollow post with external threads on the outside. The first connector post 112 is coupled to the spray head 115 (e.g., by threaded connection) and is coupled to an external cobalt-based tungsten carbide composite sprayer, and when the external cobalt-based tungsten carbide composite sprayer is activated, the first connector post 112 transfers the cobalt-based tungsten carbide composite material to the spray head 115, and the molten or semi-molten cobalt-based tungsten carbide is sprayed by the spray head 115 onto the workpiece 26 to be sprayed. The distance of the spray head 115 relative to the workpiece 26 can be adjusted by the first connector post 112. In this embodiment, the distance of the spray head 115 relative to the workpiece 26 is automatically adjustable.

The outer side of the first connecting column 112 is sleeved with a first bearing 117, a turbine 118 and a second bearing 119 in sequence from top to bottom. The turbine 118 is rotatably supported between the first bearing 117 and the second bearing 119. The inside of the worm gear 118 is provided with an internal thread that engages with the external thread of the first connecting post 112. The mounting cylinder 111 is provided with an opening at a position corresponding to the worm wheel 118 to partially expose the worm wheel 118, so that the worm wheel 118 can be engaged with the corresponding worm 131, the worm 131 is driven by the first motor 113 to rotate so as to drive the worm wheel 118 to rotate, the rotation of the worm wheel 118 drives the first connecting column 112 to move up and down, so that the spraying head 115 connected with the first connecting column 112 can be lifted and lowered, and the distance between the spraying head 115 and the workpiece 26 can be adjusted to match the spraying of different workpieces. In addition, a limit groove 162 is formed along the axial direction of the outer side of the first connecting column 112, a limit pin 161 extending into the limit groove 162 is arranged on the inner side of the sleeve 116, and the limit pin 161 and the limit groove 162 are matched with each other, so that the first connecting column 112 can be prevented from rotating, and the lifting of the first connecting column 112 is not limited.

In this embodiment, the spray head 115 is generally Y-shaped with a plurality of spray heads mounted thereon. Preferably, three ball-head sprayers are mounted on the spray head 115, wherein the ball-head connections 511 of the ball-head sprayers can be pivoted in their mounting to adjust the angle of the ball-head sprayers with respect to each other, so that it can be adapted to workpieces 26 of different sizes, in particular shafts, rollers, turbine bars, etc. to be sprayed. The Y-shaped spray head 115 includes a communicating portion 150 connected to the first connection post 112 and two branch portions 151 branched from the end portion of the communicating portion 150 remote from the first connection post 112. Preferably, the angle between the two branches 151 is an obtuse angle. More preferably, the obtuse angle has an angle of 144 °. The obtuse angle can compensate for the limitation of the pivot of the ball head connecting part 511, so that the spray head 115 can be suitable for smaller-sized shafts, rollers and turbine rods waiting for spraying workpieces.

When the spray head 115 sprays the workpiece 26, the spray liquid on the sprayed part needs to be dried, purged of excess powder and the like as soon as possible by the drying assembly 12, so as to ensure the quality of the coating and improve the drying efficiency after spraying. The drying assembly 12 includes a rotating base 121 sleeved on the spraying assembly 11, a sliding base 120 slidably mounted on the rotating base 121, and a drying head 123 mounted on the sliding base 120. The rotary base 121 is substantially disk-shaped and has a through hole 214 formed at the center thereof. The rotating base 121 is sleeved outside the sleeve 116 of the spray assembly 11 through the through hole 214 and stopped between the flange 110 and the mounting plate 100. Preferably, the outer periphery of the rotating seat 121 is provided with a bevel gear portion 213, which can be engaged with a corresponding bevel gear, and the motor drives the bevel gear to rotate so as to drive the rotating seat 121 to rotate, so as to realize the rotation of the rotating seat 121 relative to the sleeve 116, that is, the rotation of the drying assembly 12 relative to the spraying assembly 11. The rotating seat 121 is further provided with a slide way 211 arranged between the through hole 214 and the bevel gear part 213, and a rack 212 adjacent to the slide way 211, wherein the rack 212 extends along the length direction of the slide way 211. The slide shoe 120 is slidably mounted in a slide 211. Specifically, the sliding base 120 is provided with a motor, and an output shaft of the motor is provided with a gear which is engaged with the rack 212, so that under the operation of the motor, the gear moves relative to the rack 212 to realize the reciprocating movement of the sliding base 120 in the slideway 211, so as to adjust the distance between the drying head 123 arranged on the sliding base 120 and the spraying assembly 11, in particular the spraying head 115. This makes the distance between drying head 123 and the spraying subassembly 11 can adjust according to actual demand to can satisfy the stoving requirement after the different spraying. The drying head 123 is connected to a second connecting column 122, and the second connecting column 122 is connected to a corresponding drying device, such as a thermal drying device. The process gas of the thermal drying device is sprayed on the coating layer to be coated through the drying head 123 to perform a corresponding thermal drying process and the like. The drying head 123 is connected with a corresponding lifting driving assembly through a second connecting column 122 to realize the lifting of the drying head 123. Preferably, the specific structure and lifting manner of the drying head 123 are the same as those of the spraying head 115, and are not described herein. Preferably, the distance between the drying head 123 and the spraying head 115 needs to be set to ensure that drying is not affected by spraying of the spraying head 115, and spraying of the spraying head 115 is not affected, and that the sprayed coating is dried in time.

Referring back to fig. 1 and 2, the specific processes of spraying and drying after spraying are described with the shaft to be sprayed as the workpiece 26. The lower assembly 2 includes a support 200 and a transfer assembly 201 mounted on the support 200, and the workpiece 26 is placed on the transfer assembly 201. The carrier assembly 201 is reciprocally movable relative to the support 200 to effect reciprocal movement of the workpiece 26 during the spraying process. In this embodiment, the conveying assembly 201 is provided with a slide rail 21 and two brackets 24 slidably mounted on the slide rail, and the workpiece 26 is rotatably supported on the two brackets 24. The distance between the two supports 24 can be adjusted according to the length of the workpiece 26. Preferably, the bracket 24 is generally Y-shaped. The branches of the Y-shaped bracket 24 are respectively mounted with driven wheels 25. A driven pulley 25 of a carriage 24 is engaged with a driving pulley 23 of a second motor 22 mounted on the conveyor assembly 201, and the driving pulley 23 and the driven pulley 25 are driven to rotate by the operation of the second motor 22, thereby rotating the workpiece 26. Before spraying, a user adjusts the angles of the nozzles of the spraying head 115 and the angles of the nozzles of the drying head 123, and inputs relevant parameters (such as the length and the diameter of the workpiece 26) of the workpiece 26 to be sprayed and parameters (such as the distance, the temperature, and the air injection speed between the drying head 123 and the spraying head 115) to be dried into a control unit (such as a control panel, a computer, etc.), the spraying assembly 11 correspondingly moves up and down under the control of the first motor 113 and the driving assembly, and the drying assembly 12 also correspondingly moves up and down under the control of the corresponding motor and the driving assembly and adjusts the distance of the drying head 123 relative to the spraying head 115 of the spraying assembly 11, at this time, the spraying head 115 and the drying head 123 are both located in the conveying direction of the conveying assembly 201. When spraying is started, the conveying assembly 201 moves the workpiece 26 supported on the bracket 24 to the position below the spraying head 115 of the spraying assembly 11 for spraying, and then the sprayed coating is correspondingly dried, cured and the like through the drying head 123; after the spraying and drying along the traveling path are completed, the second motor 22 operates to drive the driving wheel 23 and the driven wheel 25 to rotate, so that the workpiece 26 rotates to perform the spraying and drying of other parts, at this time, the motor corresponding to the bevel gear part 213 of the rotating seat 121 of the drying assembly 12 operates to drive the bevel gear on the motor, which is engaged with the bevel gear part 213, to rotate the rotating seat 121, the drying head 123 rotates to the other side of the spraying head 115 under the driving of the rotating seat 121, at this time, the spraying head 115 and the drying head 123 are both located in the conveying direction of the conveying assembly 201, and then the spraying and drying of the part to be sprayed are performed. The sector notch 101 with the central angle larger than 180 degrees can ensure that the drying head 123 rotates 180 degrees around the spraying head 115, so that spraying and drying are carried out on a straight path, and the sprayed coating is dried in time. The cobalt-based tungsten carbide composite material surface coating equipment is used for spraying and drying in an assembly line, so that spraying and drying can be carried out synchronously, the sprayed coating can be ensured to be dried in time, the process treatment time is greatly saved, and the quality of the coating is improved.

In summary, the present invention is only a preferred embodiment, and is not intended to limit the scope of the invention, i.e. all equivalent changes and modifications made according to the content of the present invention should fall into the technical scope of the present invention.

Claims (10)

1. The utility model provides a cobalt base tungsten carbide composite surface coating equipment, includes subassembly and the last subassembly of installation above the subassembly down, and the work piece of treating the spraying is placed on the subassembly down, its characterized in that, it includes the mounting panel to go up the subassembly, and installs spraying assembly and stoving subassembly on the mounting panel, stoving subassembly and spraying assembly interval set up and can rotate for spraying assembly, the stoving subassembly is established including the cover rotation seat on the spraying assembly, install slidable rotate the sliding seat on the seat, and install drying head on the sliding seat.

2. The apparatus of claim 1, wherein the mounting plate is provided with a notch, the notch is fan-shaped and has a central angle greater than 180 °, a recess is provided at a top of the notch, the recess is recessed away from the notch, and the spray assembly is mounted on an upper side of the recess.

3. The apparatus of claim 2, wherein the spray assembly comprises a sleeve mounted on an upper side of the recess, a mounting cylinder mounted on an end of the sleeve distal from the recess, a spray head mounted on the mounting cylinder, and a drive assembly configured to drive the spray head up and down.

4. The apparatus of claim 3, wherein the sleeve is in the form of a hollow cylinder, an end of the sleeve remote from the recess is provided with a radially outwardly extending flange, and another end of the sleeve abuts against an upper side of the recess.

5. The apparatus of claim 4, wherein the rotary holder is disk-shaped, and has a through hole at its center, and the rotary holder is sleeved outside the sleeve of the spray assembly through the through hole and stopped between the flange and the mounting plate.

6. The cobalt-based tungsten carbide composite surface coating equipment according to claim 5, wherein the outer peripheral side of the rotating seat is provided with a bevel gear part engaged with a bevel gear, and the bevel gear drives the rotating seat to rotate.

7. The apparatus of claim 6, wherein the rotating seat is further provided with a slideway disposed between the through hole and the bevel gear portion, and a rack adjacent to the slideway, and the sliding seat is slidably mounted in the slideway.

8. The apparatus of claim 3, wherein the spray head passes through the recess and is liftably mounted on the mounting cylinder by the driving assembly, the driving assembly comprises a first connecting column, a first bearing sleeved outside the first connecting column, a turbine and a second bearing, the turbine is rotatably supported between the first bearing and the second bearing, and an inner side of the turbine is provided with an internal thread engaged with an external thread of the first connecting column.

9. The cobalt-based tungsten carbide composite facecoat apparatus of claim 3, wherein the spray head is Y-shaped with a plurality of spray heads mounted thereon.

10. The apparatus of claim 1, wherein the lower assembly comprises a support and a conveyor assembly mounted on the support, the workpiece being placed on the conveyor assembly, the conveyor assembly being reciprocally movable relative to the support to effect reciprocal movement of the workpiece during the spray coating process.

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