JPH06104303B2 - Pipe inner surface processing device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a pipe inner surface processing apparatus.

2. Description of the Related Art Conventionally, in the manufacturing process of cast pipes, abrasive particles are sprayed into the inside of the pipe to be processed, and the internal particles of the pipe to be processed are removed by removing excess ladle etc. with the abrasive particles. I was sweeping. Then, in order to prevent the abrasive particles from scattering around, the tube to be treated is arranged in a sealed booth.

SUMMARY OF THE INVENTION However, according to the above-mentioned configuration, since the whole pipe to be treated is surrounded by the booth, there is a problem that the facility becomes large and the facility cost becomes high.

The present invention solves the above problems, and an object of the present invention is to provide a pipe inner surface processing apparatus capable of preventing the scattering of polishing particles by using a simple polishing step.

Means for Solving the Problems In order to solve the above problems, the present invention relates to a rotation holding device for rotatably holding a receiving portion side of a processing target tube around an axis, and an insertion opening side of the processing target tube. And a rotary drive device for rotating the pipe to be processed around the axis, and a lance having a length corresponding to the entire length of the pipe to be inserted and withdrawn in the pipe to be processed in the axial direction, and the lance. An injection nozzle provided at the tip of the blasting machine having a blasting particle ejection port, and a scouring and sweeping agent supplying device for supplying the scouring and sweeping particles to the lance, the rotation holding device for inserting the lance The sleeve is rotatably provided, and at one end of the sleeve, there is provided a cone-shaped receptacle holding portion that abuts on the outer peripheral edge of the end portion of the receptacle of the processing target tube and seals the opening periphery of the receptacle. The rotation drive device is provided for inserting the insertion opening of the pipe to be processed. The second sleeve is provided so as to communicate with the abrasive particle recovery device.

Operation With the above-described configuration, the pipe to be processed is received while the periphery of the opening of the pipe receiving portion is sealed by the pipe holding device of the rotation holding device, and the insertion portion of the pipe to be processed is inserted into the second sleeve. Then, the lance is inserted into the processing target tube by inserting the lance into the processing target tube by inserting the sleeve and the receiving opening holding unit from the receiving section side into the processing target tube while rotating the processing target tube. At this time, the polishing and sweeping agent is supplied from the polishing and sweeping agent supply device to the lance, and the inner surface of the tube to be treated is polished and cleaned by the polishing and sweeping particles ejected from the polishing and sweeping particle injection port of the injection nozzle. Then, when the abrasive particles for spraying into the tube to be treated are sucked into the abrasive particle recovery device for abrasive particles through the second sleeve, and when the injection nozzle reaches the end portion of the tube to be treated on the insertion side. To stop the supply of polishing particles.

Embodiment An embodiment of the present invention will be described below with reference to the drawings. First
1 to 3, the pipe 1 to be treated is a cast pipe,
They are arranged horizontally. A lance device 2, a rotation holding device 3, and a rotation drive device 4 are arranged on the axis of the processing target pipe 1. The lance device 2 includes a first traveling carriage 5 that reciprocates in the axial direction of the pipe 1 to be treated, and a first traveling carriage 5.
The traveling vehicle 5 has a lance 6 which is cantilevered at one end. The rotation holding device 3 reciprocates in the axial direction of the pipe 1 to be processed, the second traveling carriage 7, the bearing portion 8 provided on the second traveling carriage 7, and the axial direction of the pipe 1 to be treated. The sleeve 9 rotatably held by the bearing 8 and the sleeve 9 provided at one end of the sleeve 9 and abutting on the outer peripheral edge of the end 1a of the pipe 1 to be treated, It has a conical socket holder 10 that seals around the opening of the
A sealing material 11 and a mask ring 12 that is inserted into the receiving portion 1a and covers the inner peripheral surface of the receiving opening are provided on the inner peripheral surface of the receiving opening holding portion 10. The other end of the sleeve 9 is in sliding contact with the outer periphery of the lance 6 and seals the opening of the sleeve 9.
Is provided. The rotary drive device 4 includes a third traveling carriage 14 that reciprocates in the axial direction of the pipe 1 to be processed, and a third traveling carriage 14.
A second bearing portion 15 provided on the traveling carriage 14, a second sleeve 16 arranged in the axial direction of the pipe 1 to be treated and rotatably held by the second bearing portion 15, sleeve
A pipe chuck 17 provided at one end of 16 for holding the pipe 1 to be processed, a chain wheel 18 keyed to the other end of the second sleeve 16, and a drive connected to the chain wheel 18 via a chain 19. It has a motor 20 and an air blowing pipe 21 inserted into the second sleeve 16, and this air blowing pipe 21 is to be replaced as a consumable item. Further, the abrasive cleaning particle feeder 22 is provided in communication with the base end side of the lance 6. A grinding and sweeping particle collecting device 23 is provided in communication with the air-blowing pipe 21 of the rotary drive device 4. The grinding and sweeping particle collecting device 23 is a dust collector 24, a bucket elevator 25, and a rotary. And a screen 26. Further, the lance 6 is slidably held in the axial direction by a support 27 in front of the rotation holding device 3, and an injection nozzle 28 is provided at the tip of the lance 6. The spray nozzle 28 is provided with a polishing / cleaning particle spray port 29.

The operation of the above configuration will be described below. The rotation driving device 4 is moved with respect to the processing target tube 1 arranged in the horizontal direction, and the pipe chuck 17 holds the insertion opening 1b of the processing target tube 1 in the second sleeve 16 in a fixed state. Then, the rotation holding device 3 is attached to the receiving portion 1a of the processing target tube 1.
, The inner peripheral surface of the receptacle holding portion 10 is brought into contact with the outer peripheral edge of the end portion of the receptacle 1a via the seal material 11 to seal the periphery of the opening of the receptacle 1a, and the mask ring 12 is provided. Insert it in the mouth and cover the inner surface of the mouth. Then, the drive motor 20 of the rotary drive device 4 rotates the second sleeve 16 to rotationally drive the processing target tube 1. In this state, the lance device 2 is advanced, and while holding the lance 6 by the support 27, the sleeve 9 and the socket holding portion 10 are inserted to be inserted into the inside of the processing target tube 1.
Then, the abrasive cleaning particles 29 are supplied from the abrasive cleaning agent supply device 22 to the lance 6, and the abrasive cleaning particles 30 ejected from the abrasive cleaning particle injection port 29 of the injection nozzle 28 cause Clean the inner surface. Then, the injection nozzle 28 is the insertion port of the pipe 1 to be processed.
When the end portion on the 1b side is reached, the supply of the abrasive particles 30 is stopped. In the meantime, the scavenging particles such as the swarf particles 30 jetted from the jet nozzle 28 and the slag and the like are prevented from leaking out of the processing target tube 1 from the sac 1a by the sac holder 10. Then, it is sent out to the polishing and sweeping particle collecting device 23 from the insertion port 1b. Then, the abrasive particles 30 separated in the dust collector 24
And the scavenging material are sent to the rotary screen 26 through the bucket elevator 25 and separated into the scavenging particles 30.
Only that is returned to the polishing and sweeping particle feeder 22 for repeated use.

EFFECTS OF THE INVENTION As described above, according to the present invention, the lance is inserted into the pipe to be processed in a state where the periphery of the pipe is sealed by supporting the pipe of the pipe to be processed by the pipe holder of the rotary holding device. It can be inserted, and the abrasive particles for spraying into the pipe to be treated can be collected without being scattered around.

[Brief description of drawings]

1 is an overall configuration diagram showing an embodiment of the present invention, FIG. 2 is a side view of a rotation holding device of the same embodiment, and FIG. 3 is a side view of a rotation drive device of the same embodiment. 1 ... Pipe to be treated, 2 ... Lance device, 3 ... Rotation holding device, 4 ... Rotation drive device, 6 ... Lance, 9 ... Sleeve, 10 ... Receptacle holding part, 16 ... Second Sleeve, 17 ……
Pipe chuck, 20 …… Drive motor, 28 …… Injection nozzle, 29 …… Abrasive particle ejection port.

Claims (1)

[Claims] 1. A rotation holding device for rotatably holding a receiving portion side of a processing target tube around an axis, and a driving target tube rotationally driving about a shaft holding an insertion side of the processing target tube. A rotary drive device, a lance that has a length corresponding to the entire length of the pipe to be processed and is inserted into and removed from the pipe to be processed in the axial direction, and a blasting particle ejection port provided at the tip of the lance. A spray nozzle having the spray nozzle and a polishing and sweeping agent supply device for supplying the polishing and sweeping particles to the lance, and the rotation holding device is provided with a sleeve for inserting the lance rotatably and one end of the sleeve. Is provided with a conical inlet holding portion that abuts the outer peripheral edge of the end portion of the receiving portion of the pipe to be processed and seals the periphery of the opening of the receiving portion. A second sleeve for inserting the part is provided in communication with the abrasive-particle cleaning device. Tube surface processing apparatus, characterized in that.