JPH05277793A - Manufacturing device for piping unit with joint - Google Patents

Abstract

PURPOSE:To largely reduce man-hours and time required for manufacturing by manual work by automatically welding the joining part of an end of a pipe and a joint in a joining state by a joint supplying device and a clamping device. CONSTITUTION:A pipe 3 is held by a clamping device 4, moved back and forth guided by a transfer line 1 and turned. The end part of the turning pipe 3 is ground by a grinding device approaching the transfer line 1 freely approaching/aparting, the surface of the pipe is removed for welding and the end edge of the pipe is chamfered. A joint is fitted to the end part of the pipe 3 by the joint supplying device 9. The joining part of the joint and the end of the pipe 3 is automatically welded by a welder 10. The pipe 3 is cut into pieces having required length by a cutter 11 to be finished as a piping unit with a joint. Thus, a piping unit having a joint at its end is rapidly and automatically manufactured.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for manufacturing a piping unit with a joint for preliminarily manufacturing each element of piping laid on site in a factory or the like.

[0002]

2. Description of the Related Art A large number of piping units (also referred to as piping spools) in which a pipe having a desired length and a pipe joint are preliminarily welded to each portion of the pipe are prepared based on a piping design drawing,
There was a pipe laying method that joins each unit to each other at the pipe laying site. In such a case, the piping unit manually polishes, stamps, welds, cuts, etc. the pipe. According to such a conventional method, there is a drawback that it takes a lot of man-hours and time to manufacture the piping unit.

[0003]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a manufacturing apparatus capable of automatically manufacturing a piping unit with a joint, and to achieve the object, the following construction is adopted. The apparatus of the present invention has an apparatus main body 2 provided with a pipe transfer line 1, and a clamp device 4 is driven on the transfer line 1 so as to be movable back and forth. And the clamp device 4
Is configured such that the outer periphery of the tube 3 is detachably held and can be rotationally driven around the tube axis in the held state. Further, a polishing device 7 having an outer skin polishing body 6 for shaving the outer skin of the end portion of the tube 3 which is rotationally driven by the clamp device 4 is guided so as to come in contact with and separate from the axis of the tube. Further, the joint supply device 9 is guided in and out of the pipe shaft so that the joint supply device 9 holds the joint 8 and aligns the axis of the opening with the pipe shaft. Then, the joint supply device 9 and the clamp device 4
Thus, the welding machine 10 for automatically welding the connecting portion is provided in a state where the end of the pipe 3 and the joint 8 are connected. Further, a preferred embodiment of the present invention is provided with a cutter 11 which detachably grips the outer periphery of the pipe 3 and cuts the pipe in the gripped state. Further, a laser marker 15 for marking an identification number and a symbol is provided on the outer circumference of the tube.

[0004]

In FIG. 1, the supplied pipe 3 is gripped by the clamp device 4. Then, the clamp device 4 is guided by the transport line 1 to move back and forth and rotate the pipe. Then, the polishing device 7 comes close to the transport line 1 so that it can freely come into contact with and separate from
The end of the rotating tube 3 is ground to scrape off the black skin for welding, and the tip edge is chamfered. Next, the pipe 3 is moved further downstream by the clamp device 4, and the joint is fitted to the tip of the pipe 3 by the joint supply device 9. Then
The welder 10 automatically welds the joint between the joint and the pipe 3. Next, the pipe 3 is cut into a desired length by the cutter 11, and the piping unit with a joint is completed.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the device of the present invention will be described below with reference to the drawings. 1 is a schematic plan view of the present manufacturing apparatus, FIG. 2 is the same front view, FIG. 3 is a front view of a clamp device 4 of the same manufacturing apparatus, FIG. 4 is the same plan view, and FIG.
6 is a partially sectional front view of the polishing device 7, and FIG. 7 is a side view of the same. Further, FIG. 8 shows a joint supply device 9 of the present manufacturing apparatus.
Fig. 9 is a side view showing the joint clamp 43 portion of Fig. 9, Fig. 9 is an explanatory view showing a welded state of the pipe 3 and the joint 8 by this device, and Fig. 10 shows an example of a pipe unit with a joint manufactured by this device.
11 and 12 are a side view and a front view of the cutter 11 used in this apparatus, respectively. Further, FIG. 13 is a diagram for explaining the operation of this device. As shown in FIGS. 1 and 2, the present apparatus is provided with a transfer line 1 in the longitudinal direction of the upper surface of the apparatus main body 2, and a pair of guide rails 22 and a rack described later are arranged in parallel on the transfer line 1. There is. The clamp device 4 is guided by the guide rails 22 so as to be movable back and forth in the longitudinal direction of the device body 2.

Further, a plurality of pipe pedestals 12 are provided on the transfer line 1 separately from each other. A polishing device 7 and a laser marker 15 are arranged at the center of the transfer line 1. The polishing device 7 is arranged so that it can be moved in and out of the transport line 1 in the direction of the arrow in FIG. That is,
It moves in the width direction of the transfer line 1 and moves in and out on the axis of the pipe 3 being transferred. Further, the laser marker 15 is such that the movable portion projected at the tip end thereof is moved up and down slightly and marking is made on the tube 3 arranged below it. A cutter 11 is arranged at the downstream end of the transport line 1. A welding machine 10 and a joint supply device 9 are provided between the cutter 11 and the laser marker 15. Welding machine
10 is a welding robot 19 provided with a TIG welding machine at the tip thereof, and the joint supply device 9 is a joint robot.
A gripping device is provided at the end of 20. Further, a joint storage shelf 18 is provided at a position adjacent to the joint supply device 9,
Various sizes of joints are arranged here. A control device 14 that controls these is arranged adjacent to the transport line 1.

Then, each component of the manufacturing apparatus will be described. First, the pipe pedestal 12 and the clamp device 4 existing on the upstream side of the transfer line 1 are provided as shown in FIGS. That is, a pair of guide rails 22 are provided in parallel on the upper surface of the apparatus main body 2, and the lower end of the clamp device 4 is guided thereto as shown in FIG. Inside the pair of guide rails 22, a pair of racks 23 are arranged in parallel with each other, and the pinions 24 of the clamp device 4 mesh with the racks 23.
The pinion 24 is rotated by a forward / backward drive motor 25 via an encoder (not shown) to move the clamp device 4 back and forth in the longitudinal direction of the transport line 1. Further, a clamp rotation motor 26 is provided below the clamp device 4, and the clamp rotation motor 26 is used to rotate the clamp through the control device 14 so as to rotate the tube held by the clamp around its axis. And
A through hole 56 is provided in the upper part of the clamp device 4, a pipe is penetrated therethrough, and the outer periphery of the pipe is detachably clamped. Also, a pipe stopper is provided on the side of the clamp device 4.
16 is arranged and rotates in the direction of the arrow from the position of the solid line in FIG. 5 to the position of the axis of the through hole 56. This pipe stopper
Reference numeral 16 is for accurately positioning the first gripping position of the tube supplied to the clamp device 4.

Next, a plurality of pipe pedestals 12 are provided on the upstream side of the clamp device 4. The pipe pedestal 12 at the most upstream end is fixed, and the other pipe pedestals 12 move forward as the clamp device 4 moves forward, and support the middle portions of the pipes at substantially equal intervals. A drum-shaped roller 13 is rotatably supported on the upper surface of each of the pipe pedestals 12, and the roller 13 slightly moves in the vertical direction together with the support shaft, regardless of the diameter of the pipe 3 to be supplied. Instead, the axis of the tube is always aligned with the axis of the through hole of the clamp device 4. The raising / lowering operation of the roller 13 is automatically performed by the controller 14 using an air cylinder. Next, a polishing device 7 shown in FIGS. 6 and 7 is arranged on the downstream side surface of the clamp device 4, and a frame 35 thereof is provided by a width-direction drive cylinder 36 so as to be able to move in and out in the width direction of the device body. There is. That is, the frame 35 is guided by the guide pin 41 and the width direction drive cylinder 36 provided at the center of the frame 35 is guided.
The rod 37 expands and contracts to move in and out in the direction of the arrow from the position indicated by the solid line in FIG. Then, the pipe 3 enters the axis of the pipe 3 to be supplied, and the pipe 3 is inserted into the polishing device 7 through the through hole provided on the side surface thereof.
Enter inside.

The position of this through hole is described as a pipe insertion hole 27 at approximately the center of the tip of the frame 35 in FIG. 7, and the pipe 3 enters the pipe insertion hole 27. flame
Inside 35, an outer skin polishing body 6 and a ground outer skin polishing body 6a are arranged. Each of the outer skin polishing body 6 and the ground outer skin polishing body 6a is composed of a belt sander, and polishes the outer skin of the tube 3 by rotation of an endless sand belt wound between a pair of pulleys. The outer skin polishing body 6 and the ground outer skin polishing body 6a both swing up and down around the center of the large diameter pulley in FIG. 7 by the outer skin polishing body elevating cylinder 31 to contact and separate from the outer peripheral surface of the pipe 3. It is freely configured. That is, a part of the pair of outer skin polishing bodies 6 and the ground outer skin polishing body 6a is connected to the outer skin polishing body frame 32,
The outer polishing body frame 32 is a cylinder for lifting the outer polishing body
It is supported by 31 piston rods. As the piston rod moves up and down, the outer skin polishing body 6 and the ground outer skin polishing body 6a move up and down. Here, the outer skin polishing body 6 contacts the outer peripheral surface of the tip portion of the tube 3, and the ground outer skin polishing body 6a contacts the outer peripheral surface of the tube 3 slightly downstream of the front end portion. While the tube 3 is rotated by the rotation of the clamp device 4, the outer skin polishing body 6 and the ground outer skin polishing body 6a are driven to scrape off the outer skin of the tip end portion of the tube 3.

Next, as shown in FIG. 6, an edge polishing body 5 for polishing the tip edge of the tube 3 is obliquely arranged above the outer skin polishing body 6 and the earth outer skin polishing body 6a. This edge polishing body 5
Also consists of a belt sander, which is supported by the edge polishing body lifting frame 29. This edge polishing body lifting frame
29 is guided by the guide pin 28 and is a frame lifting cylinder.
A pair of horizontal guide pins 40
And is horizontally moved by the horizontal swing cylinder 30. The edge polishing body 5 rounds the edge of the tip of the tube 3 so that the tip of the tube 3 can be fitted into the opening of the joint. The outer skin polishing body 6 is used to remove the outer skin of the tip of the pipe 3 so that a welded portion can be formed on the outer peripheral surface of the pipe 3. Further, the ground skin polishing body 6a forms a contact portion of the welding electrode. Further, the tip of a hose of a dust collecting device (not shown) is guided into the polishing device 7 to suck dust.

Next, the laser marker 15 provided on the downstream side of the polishing device 7 is a known one, and the tip of the laser marker 15 moves up and down according to the diameter of the tube 3 to mark an identification symbol on the outer peripheral surface of the tube 3. To do. Further, the welding machine 10 arranged on the downstream side of the laser marker 15 is also one in which a known TIG welder is provided at the tip of a known welding robot 19 and the controller 14 controls it. Similarly, the joint supply device 9 also uses the well-known joint robot 20, and a joint clamp 43 is provided at the tip thereof as shown in FIG. In this joint clamp 43, a pair of claw portions 44 are arranged in parallel with each other and separated from each other, and the space between them is configured to be expandable and contractable. And
The joint holding jig 45 is detachably held between them. The joint 8 is fitted into the joint holding jig 45. That is, a joint fitting portion 46 having a spring property in the radial direction is provided at the center of the groove bottom of the joint holding jig 45 formed in a short groove shape, and one opening of the joint 8 is fitted therein. It is for positioning. The claw portion 44 is configured to be able to grip the side surfaces of the flange portion projecting on both sides of the upper end of the joint holding jig 45.

Next, the joint holding jigs 45 are arranged in the joint storage shelves 18 which are divided into a plurality of planes in FIG. 1, and the joint holding jigs 45 of various shapes and sizes are preliminarily arranged. The joint 8 is stored. Then, for each address of each joint storage shelf 18, the type and size of each joint 8 stored therein is registered in the control device 14. Next, the cutter 11 arranged at the downstream end of the transport line 1 is formed as shown in FIGS. 11 to 12. That is, FIG. 11 shows its side view and FIG. 12 shows its front view. The cutter 11 is provided with a cutter pipe clamp 21 for detachably gripping both sides of the pipe 3. The cutter pipe clamp 21 clamps the outer periphery of the pipe 3 via the clamp cylinder 54 in a detachable manner, and lowers the rotating blade 55 in the grasped state to cut the pipe 3 at an appropriate position. is there. The blade 55 is driven to rotate by a cutter driving motor 53 and also moves up and down via a cutter lifting cylinder 52.

[0013]

[How to use] Next, FIG. 13 is a flow chart showing the manufacturing process of the piping unit by this device. A floppy disk is inserted into the control device of this device. In this floppy disk, the spool number of the piping unit (spool) with a joint, the system, the set of application data, the material of the pipe joint, the length of the pipe, the welding number, etc. are input in advance. Furthermore, FIG.
The type and size of the pipe joint stored in each address of the joint storage shelf 18 in are input to the control device 14. Then, the type of pipe is instructed based on these data, and a desired pipe 3 is supplied as shown in FIG. 1 through a pipe supply device (not shown) arranged on the upstream side of the present device. At this time, the roller 13 of the pipe pedestal 12 is finely adjusted in the vertical direction according to the diameter of the pipe 3 by an instruction from the control device 14. Thereby, when the tube 3 is conveyed onto the roller 13, the axis of the tube 3 and the axis of the through hole of the clamp device 4 are aligned with each other. And tube 3
Is passed through the clamp device 4, and its tip comes into contact with the pipe stopper 16 and stops. Then, the clamp device 4 grips the outer circumference of the tube 3.

Then, the pipe stopper 16 is rotated and the polishing device 7 is advanced to the transfer line 1 side. Then, the clamp device 4 is moved downstream by a predetermined distance via an encoder (not shown), and the tip of the tube 3 is fitted into the through hole of the polishing device 7. Then, as shown by the chain line in FIG. 6 and FIG.
To enter. Then, while rotating the clamp device 4, the edge polishing body 5, the outer skin polishing body 6, and the earth outer skin polishing body 6a are driven. As a result, the tip edge of the tube 3, the outer periphery of the tip of the tube 3 and the outer skin of the portion adjacent thereto are scraped off. Then, the rotation of the clamp device 4 is stopped, and the clamp device 4 is retracted while holding the tube 3. Then, the polishing device 7 retracts. Next, the tip of the laser marker 15 is finely adjusted in the vertical direction according to the outer diameter of the tube 3, and the clamp device 4 holding the tube 3 is moved to the downstream side so that the appropriate position of the tube 3 can be adjusted. Place it below the tip. And
An identification symbol and others are marked on the outer circumference of the pipe 3.

Next, the clamp device 4 while holding the pipe 3 is held.
Moves further downstream. At the same time, the joint supply device 9 holds a desired pipe joint on the joint storage shelf 18 instructed by the control device 14 together with the joint holding jig 45 (see FIG. 8), and the joint is placed on the axis of the pipe 3. Align the openings and wait. Then, the tip portion of the pipe 3 is fitted into the opening of the joint supply device 9. At this time, the welding ground 17 arranged below the transport line 1 rises and comes into contact with the lower surface of the pipe 3 polished in the previous step. The upper surface of the welding ground 17 is formed in a V-shaped groove so that the tubes 3 of various sizes can be brought into contact with the V-shaped groove. Therefore, next, using the welding machine 10, the joint 8
Two points separated from each other in the polished portion on the outer periphery of the fitting portion of the pipe 3 and the pipe 3 are temporarily welded by spot welding. Next, when the temporary fixing is completed, the joint clamp 43 of the joint supply device 9 is opened, and the joint clamp 43 retracts from the transport line 1. Next, while the pipe 3 is rotated by the clamp device 4, the connection between the tip of the pipe 3 and the joint 8 is main welded. At this time, the joint holding jig 45 is still attached to the joint 8 via the joint fitting portion 46.

Next, the clamp device 4 is moved further downstream so that the tip of the pipe 3 projects forward from the cutter pipe clamp 21 of the cutter 11. Then, the outer periphery of the pipe 3 is gripped by the cutter pipe clamp 21. Next, the grip portion of the clamp device 4 is opened and the clamp device 4 is retracted. Then, the pipe 3 is grasped at an appropriate position and the grasping portion of the cutter pipe clamp 21 is opened. Then the clamp device 4
Is moved to the downstream side, the pipe 3 is projected further to the downstream side, and stopped at an appropriate position. Next, the outer circumference of the pipe 3 is gripped by the cutter pipe clamp 21, the blade 55 of the cutter 11 is lowered as shown by the chain line in FIG. 11, and the pipe 3 is cut at an appropriate position to complete one piping unit. Such work is automatically performed one after another according to an instruction from the control device 14.

[0017]

According to the apparatus of the present invention, it becomes possible to rapidly and automatically manufacture a piping unit having a joint at the end thereof, which contributes to stability of quality and labor saving. As a result, the manufacturing cost can be significantly reduced.

[Brief description of drawings]

FIG. 1 is a schematic plan view of the manufacturing apparatus.

FIG. 2 is a front view of the same.

FIG. 3 is a front view of a clamp device 4 used in the present device.

FIG. 4 is a plan view of the same.

FIG. 5 is a side view of the same.

FIG. 6 is a partial sectional front view of a polishing device used in this device.

FIG. 7 is a side view of the same.

FIG. 8 is a side view showing a joint clamp 43 portion of the joint supply device 9 used in the present device.

FIG. 9 is an explanatory view showing a welded state of the pipe 3 and the joint 8 by this device.

FIG. 10 shows an example of a piping unit with a joint manufactured by this device.

FIG. 11 is a side view of the cutter 11 used in the present device.

FIG. 12 is a front view of a cutter 11 used in this device.

FIG. 13 is a flowchart of the present device.

[Explanation of symbols]

 1 Transport Line 2 Device Main Body 3 Tube 4 Clamping Device 5 Edge Polishing Body 6 Outer Skin Polishing Body 6a Ground Outer Skin Polishing Body 7 Polishing Device 8 Joint 9 Joint Supply Device 10 Welding Machine 11 Cutter 12 Pipe Cradle 13 Roller 14 Control Device 15 Laser marker 16 Pipe stopper 17 Welding ground 18 Joint storage shelf 19 Welding robot 20 Joint robot 21 Pipe clamp for cutter 22 Guide rail 23 Rack 24 Pinion 25 Forward / backward drive motor 26 Clamp rotation motor 27 Pipe insertion hole 28 Guide pin 29 Edge polishing Body raising / lowering frame 30 Cylinder for horizontal swing 31 Cylinder for raising / lowering outer skin 32 Crushing body for outer skin 33 Frame 34 Shaft 34 Bearing 35 Frame 36 Width drive cylinder 37 Rod 39 Frame raising / lowering cylinder 40 Guide pin 41 Guide pin 42 Base 43 Joint clamp 44 Claw Part 45 Joint holding jig 46 Joint fitting part 47 Edge polishing part 48 Edge skin Grinding unit 49 grounding polishing unit 50 the electrode 51 welded portion 52 cutter lifting cylinders 53 cylinder cutter drive motor 54 clamp 55 blade 56 through holes

Claims (2)

[Claims] 1. An apparatus main body (2) provided with a pipe transfer line (1) and a pipe (3) which is driven by the transfer line (1) so as to be movable back and forth and the outer periphery of the pipe (3) is removable. Clamping device (4) that is gripped by the device and can be driven to rotate around the tube axis in the gripping state, and the clamping device (4)
A polishing device (7) having an outer skin polishing body (6) for scraping the outer skin of the end of the tube (3) rotationally driven by the )When,
A joint supply device (9) that is guided in and out of the pipe shaft so that the joint (8) is gripped and the axis line of the opening is aligned with the pipe shaft, and the joint supply device (9) and the clamp device (4) A welder (10) for automatically welding the connection part of the joint (8) connected to the end of the pipe (3) by
An apparatus for manufacturing a piping unit with a joint, comprising: 2. The apparatus for manufacturing a piping unit with a joint according to claim 1, further comprising a cutter (11) for detachably gripping an outer periphery of the pipe (3) and cutting the pipe in the gripped state.