CN210304269U

CN210304269U - Ball core coating uniformity measuring instrument of dismounting-free inner support spraying tool

Info

Publication number: CN210304269U
Application number: CN201920987613.7U
Authority: CN
Inventors: 马玉山; 刘海波; 常占东; 刘艳玲; 何涛; 马军
Original assignee: Wuzhong Instrument Engineering Technology Service Co ltd; Wuzhong Instrument Co Ltd
Current assignee: Wuzhong Instrument Engineering Technology Service Co ltd; Wuzhong Instrument Co Ltd
Priority date: 2019-06-28
Filing date: 2019-06-28
Publication date: 2020-04-14
Anticipated expiration: 2029-06-28

Abstract

The utility model discloses a exempt from to demolish ball core coating homogeneity measuring apparatu of interior support frock of spraying, include: the spraying inner support tool comprises a rotary table and a main shaft which is arranged on the rotary table and is controlled by the rotary table to rotate around an axis, and a ball core is sleeved on the main shaft and can synchronously rotate along with the main shaft; the spray gun is arranged above the ball core; the coating test device comprises coating test strips for testing the coating thickness of the outer surface of the ball core, the coating test strips are arranged between the ball core and the spray gun at intervals along the longitude direction of the ball core, and the coating test strips can revolve along with the spindle and rotate around the ball core; and the driving device is used for controlling the rotation of the coated test strip. The coating thickness can be directly measured and the unevenness of the coating can be confirmed without dismantling the inner support tool for coating after the ball core is coated, then the coating scheme is readjusted, the local low point is supplemented with the coating, the working efficiency is greatly improved, and the resource waste and the cost increase are effectively avoided.

Description

Ball core coating uniformity measuring instrument of dismounting-free inner support spraying tool

Technical Field

The utility model belongs to the technical field of the valve, concretely relates to exempt from to demolish ball core coating homogeneity measuring apparatu of interior support frock of spraying.

Background

The ball core is at the spraying in-process, the spray gun passes through the robotic arm and swings from side to side, the powder of spray gun spun will fall on the surface of ball core, because the slew velocity of ball core is much faster than the translation rate of spray gun, as long as the spraying rate of spraying is even, simultaneously the rotational speed of ball core is even, the powder can be along the rotatory latitude direction evenly distributed of ball core, so the coating of latitude direction all can guarantee evenly, but can't guarantee evenly along the longitude direction of ball core, this is because the linear velocity of ball core surface is different, so the powder area of the powder of surface along longitude direction is different, ball core center department is bigger than both sides area, so can't guarantee along the homogeneity distribution of longitude direction. Therefore, the thickness of the coating layer is measured continuously during the spraying process, but the purchased coating thickness gauge has very inaccurate measurement due to the technology and the coating material. The other mode is that the ball core is arranged on a spraying inner support tool, and the spraying inner support tool controls rotation in the spraying process, and the ball core is often large in size, heavy and difficult to disassemble due to the fact that the ball core is made of carbon steel or stainless steel, and the disassembling period is long and is about 2-3 hours. Taking it off and testing it on a three coordinate apparatus can delay the work time significantly. However, if the three-dimensional coordinate measuring device is not used on a station, the three-dimensional coordinate measuring device cannot accurately measure the three-dimensional coordinate without being used. The currently used slag locking valve, particularly the slag locking valve with the size more than 200 calibers, causes great difficulty in processing due to the hard alloy sprayed on the surface of the valve core; for a slag locking valve with 300 calibers, the time for grinding the light-emitting surface at the low point of the accessory of the runner opening is very long due to uneven spraying, generally 4 hours are needed for grinding the ball core with higher roundness, and if the local low point exists, the ball core can be ground for more than 8 hours, so that the great waste of surface hardening materials, the loss of grinding materials and machines, the loss of grinding tools and the cost of labor are increased.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an overcome the defect among the above-mentioned prior art, provide a frock coating homogeneity measuring apparatu is taken to ball core, the utility model discloses to the ball core that has just spouted, under the condition of support frock in having the spraying, carry out the field measurement to the circularity of ball core, carry out real-time measurement to the coating homogeneity among the ball core spraying process promptly to the homogeneity quantization index of coating is provided, for spouting the quantitative guidance that provides again, in this way, in case the unsatisfied requirement of discovery coating, just can continue to mend and spout on spraying equipment, need not repeat again and dismantle or install the frock, accomplish accurate benefit simultaneously and spout and guide the task.

The utility model discloses the technical scheme who adopts does: the utility model provides a exempt from to demolish ball core coating homogeneity measuring apparatu of interior support frock of spraying, includes:

the spraying inner support tool comprises a rotary table and a main shaft which is arranged on the rotary table and is controlled by the rotary table to rotate around an axis, and the ball core is sleeved on the main shaft and can synchronously rotate along with the main shaft; wherein the ball core can be installed by the conventional means in the field, such as sleeving the ball core on the main shaft through a main shaft expanding tire;

the spray gun is arranged above the ball core;

the coating testing device comprises coating test strips for testing the coating thickness of the outer surface of the ball core, the coating test strips are arranged between the ball core and the spray gun at intervals along the longitudinal direction of the ball core, and the coating test strips can revolve along with the spindle and rotate around the ball core;

and the driving device is used for controlling the rotation of the coated test strip.

Furthermore, drive arrangement is including the cover establish the gear wheel of main shaft one end, with the pinion of gear wheel meshing and install on the main shaft and be used for driving pinion pivoted power supply unit, the coating test strip passes through support fixed mounting in on the gear wheel, the gear wheel can be along with the revolution of main shaft and around main shaft rotation.

Further, the power supply device is a rotation timing device.

Furthermore, the coating test strip is arc-shaped, the circle center of the coating test strip is the center of the spherical core, the longitudinal section of the coating test strip is rectangular, the processing is easy, the shielding of the spherical surface is minimum under the same strength, the coating test strip is arc-shaped, the distribution proportion of the coating sprayed on the coating test strip and the coating of the spherical surface along the radial direction of the spherical core are in one-to-one correspondence, and the more direct thickness analysis of the coating of the spherical core is facilitated. Further, the test strip length is adapted to the core size to facilitate measurement of the overall core coating thickness.

Furthermore, the revolving stage is including locating revolving stage one side and being used for pressing from both sides the initiative chuck of tight main shaft one end, still including locating the revolving stage opposite side and being used for pressing from both sides the driven chuck of the tight main shaft other end.

The utility model discloses a exempt from to demolish ball core coating homogeneity measuring apparatu theory of operation of interior support frock of spraying does:

the ball core rotates and rotates around the ball core while controlling the coating test strip to revolve along with the spindle in the spraying process, powder sprayed by the spray gun falls on the coating test strip, the spray gun can be stopped after a period of spraying, the thickness of the test strip is tested midway, and the distribution of the coating thickness in the arc direction of the coating test strip can be confirmed. The spraying test strip is thin and narrow, limited in shielding and slow in rotating speed, cannot cause large influence on spraying quality, and cannot have local defects. By utilizing the device, the spraying process can be stopped at any time, the thickness of the spraying test strip can be directly detected under the condition that the ball core is not taken down from the spraying inner support tool, and the spraying test strip can be adjusted at any time when the local position is found to be non-uniform, so that the spraying time can be greatly saved, and the uniformity of the final coating is ensured.

The utility model discloses the technological effect who gains does: after the ball core is sprayed, the thickness of the coating can be directly measured and the spraying unevenness can be confirmed without dismantling the inner support tool for spraying, then the spraying scheme is readjusted, the low point local spraying is supplemented, the low point can be supplemented by 0.2-0.3 mm within 20-30 minutes generally, the workload of a grinding machine is 4 hours generally, therefore, the working efficiency is effectively improved, and the material waste, the equipment loss and the higher labor cost are effectively avoided.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is the embodiment of the utility model provides an in exempt from to demolish support frock's ball core coating homogeneity measuring apparatu's structural schematic diagram in the spraying.

Fig. 2 is the embodiment of the utility model provides an in exempt from to demolish interior support frock's of spraying ball core coating homogeneity measuring apparatu's coating testing arrangement and drive arrangement's schematic structure.

Fig. 3 is a schematic structural diagram (right view direction) of a coating test strip and a driving device of a ball core coating uniformity measuring instrument of a dismantling-free inner support tool in an embodiment of the present invention.

In the figure: 1. the test device comprises a spray gun, 2. a coating test strip, 3. a ball core, 4. a main shaft, 5. a driving chuck, 6. a powder and cooling water supply system of the spray gun, 7. a main shaft expanding tire, 8. a driven chuck, 9. a rotary timing device, 10. a large gear, 11. a small gear, 12. a bracket, 13. a rotating shaft of the timing device.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 to 3, a ball core coating uniformity measuring instrument of a dismounting-free inner support tool for spraying comprises an inner support tool for spraying, a spray gun 1 arranged above a ball core 3 and a coating testing device. Wherein, the spray gun 1 is connected with a powder and cooling water supply system 6 of the spray gun.

The spraying inner support tool comprises a rotary table and a spindle 4 which is arranged on the rotary table and is controlled by the rotary table to rotate around an axis, and the ball core 3 is sleeved on the spindle 4 and can synchronously rotate along with the spindle.

The coating test device comprises coating test strips 2 for testing the coating thickness of the outer surface of the ball core 3, wherein the coating test strips 2 are arranged between the ball core 3 and the spray gun 1 at intervals along the longitudinal direction of the ball core 3, and the coating test strips 2 can revolve along with the spindle 4 and rotate around the ball core 3.

And also comprises a driving device for controlling the rotation of the coated test strip 2.

Specifically, the method comprises the following steps:

the driving device comprises a large gear 10 sleeved on the right part of the main shaft 4, a small gear 11 engaged with the large gear 10 and a power supply device for driving the small gear to rotate, wherein the power supply device can be a motor, a speed reducer, a fan, a washing machine and other common rotating timing devices, preferably, the power supply device of the embodiment is a korea counter timer with the model of T62N embedded type and adjustable rotating speed. The rotary timing device 9 is fixedly arranged on the main shaft 4, and when a timing device rotating shaft 13 in the rotary timing device 9 rotates, the small gear 11 is driven to rotate, and the large gear 10 is driven to rotate around the main shaft 4; the rotational speed thereof can be set by the rotation timing device 9. The coating test strip 2 is fixedly arranged on a gearwheel through a bracket 12, and the gearwheel 10 can revolve with the spindle 4 and rotate around the spindle 4. The support 12 comprises 2 columns which are spaced and fixed on the end face of the right side of the large gear and a beam, two ends of the beam are respectively fixed on the two columns, one end of the coating test strip 2 is fixedly installed on the beam, the coating test strip is arc-shaped, the circle center of the coating test strip is the center of the ball core, the longitudinal section of the coating test strip is rectangular, the horizontal projection of the coating test strip 2 is parallel to the horizontal projection of the main shaft 4, and the horizontal projection length of the coating test strip 2 is greater than the diameter of the ball core. When the bull gear 10 rotates at a constant speed, the coated test strips 2 are driven to rotate around the ball core 3 by the coated test strip fixing frame 12.

The turntable comprises a driving chuck 5 arranged on one side of the turntable and used for clamping one end of the main shaft, and a driven chuck 8 arranged on the other side of the turntable and used for clamping the other end of the main shaft.

When the spray gun 1 swings left and right through a robot arm, powder sprayed by the spray gun falls on the surface of the ball core 3, and as the rotating speed of the ball core 3 is much higher than the moving speed of the spray gun 1, as long as the spraying speed of spraying is uniform and the rotating speed of the ball core 3 is uniform, the powder can be uniformly distributed along the latitude direction of the rotation of the ball core 3, so that coatings in the latitude direction can be uniformly ensured, but the coating in the longitude direction along the ball core 3 cannot be uniformly ensured, because the linear speeds of the surfaces of the ball cores 3 are different, the powder areas of the surfaces along the longitude direction are different, the areas of the centers of the ball cores are larger than those of the two sides, and the uniform distribution along the longitude direction cannot be ensured;

when the coating test strip 2 rotates around the ball core 3, powder sprayed by the spray gun 1 falls on the coating test strip 2, after a period of spraying, the machine can be stopped, the thickness of the test strip is tested midway, and therefore the distribution of the coating thickness in the arc direction of the coating test strip 2 can be confirmed. The spraying test strip is thin and narrow, limited in shielding and slow in rotating speed, cannot cause large influence on spraying quality, and cannot have local defects. By utilizing the device, the spraying process can be stopped at any time, the thickness of the spraying test strip can be directly detected under the condition that the ball core is not taken down from the spraying inner support tool, and the spraying test strip can be adjusted at any time when the local position is found to be non-uniform, so that the spraying time can be greatly saved, and the uniformity of the final coating is ensured.

The above description is only the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution and the concept of the present invention within the technical scope disclosed in the present invention.

Claims

1. The utility model provides a support ball core coating homogeneity measuring apparatu of frock in spraying of exempting from to demolish which characterized in that: the method comprises the following steps:

the spraying inner support tool comprises a rotary table and a spindle (4) which is arranged on the rotary table and is controlled by the rotary table to rotate around an axis, and the ball core (3) is sleeved on the spindle (4) and can synchronously rotate along with the spindle;

the spray gun (1) is arranged above the ball core (3);

the coating testing device comprises coating test strips (2) for testing the coating thickness of the outer surface of the ball core (3), wherein the coating test strips (2) are arranged between the ball core (3) and the spray gun (1) at intervals along the longitude direction of the ball core (3), and the coating test strips (2) can revolve along with the spindle (4) and rotate around the ball core (3);

the device also comprises a driving device for controlling the rotation of the coated test strip (2).

2. The dismounting-free ball core coating uniformity measuring instrument for the internal spraying support tool according to claim 1, is characterized in that: drive arrangement establishes including the cover gear wheel (10), pinion (11) with gear wheel (10) meshing and install on main shaft (4) and be used for driving pinion pivoted power supply device of main shaft (4) one end, coating test strip (2) are through support (12) fixed mounting on the gear wheel, gear wheel (10) can be along with main shaft (4) revolution and around main shaft (4) rotation.

3. The dismounting-free ball core coating uniformity measuring instrument for the internal spraying support tool according to claim 2, is characterized in that: the power supply device is a rotation timing device (9).

4. The dismounting-free spraying inner support tool ball core coating uniformity measuring instrument according to any one of claims 1 to 3, characterized in that: the coating test strip is arc-shaped, the circle center of the coating test strip is the center of the ball core, and the longitudinal section of the coating test strip is rectangular.

5. The dismounting-free spraying inner support tool ball core coating uniformity measuring instrument according to any one of claims 1 to 3, characterized in that: the rotary table comprises a driving chuck (5) arranged on one side of the rotary table and used for clamping one end of the main shaft, and further comprises a driven chuck (8) arranged on the other side of the rotary table and used for clamping the other end of the main shaft.