JPH10156271A - Device for sticking sand to pipe - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sand sticking device for sticking sand to a pipe automatically. SOLUTION: A pipe P carried into a stand-by station in the horizontal state by a carrying-in conveyor is lifted up by a lifting member 605 of a tact conveyor 600 and transferred to a bonding agent applying station 300. A bonding agent is applied while the pipe P is rotated in the horizontal state on the bonding agent applying station 300, and then sand is stuck to bonding agent-applied sections of the pipe P while the pipe P is transferred to the sand spraying section 400 by the tact conveyor 600 and rotated in the horizontal state, and the pipe P is transferred onto a carrying-in conveyor 500 by the tact conveyor 500.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe sanding apparatus for adhering sand to the outer surface of a resin pipe such as a vinyl chloride pipe, and more particularly to a series of steps from loading of a pipe to unloading of the pipe after sanding. It relates to an automatic pipe sanding device.

[0002]

2. Description of the Related Art When connecting a pipe made of synthetic resin such as vinyl chloride to a manhole made of concrete, sand is applied to an outer peripheral surface of the pipe in order to improve adhesiveness with cement. I have. Conventionally, a pipe sanding apparatus as described in JP-A-7-39805 has been used for attaching sand to a pipe.

In a pipe sanding apparatus described in Japanese Patent Application Laid-Open No. 7-39805, a tube holding device is provided below a shooter connected to a lower portion of a tank, and an adhesive is applied to the tube holding device. Holding the synthetic resin tube, dropping the sand from the shooter, rotating the synthetic resin tube around the axis to attach the sand to the adhesive application portion, and receiving the excess sand in the tray below the tube holding device .

[0004]

However, in the pipe sanding apparatus described in Japanese Patent Application Laid-Open No. 7-39805, an adhesive is applied to the outer peripheral surface of the pipe, and a pipe holding apparatus for the pipe is provided. There is a problem that sanding requires a lot of man-hours, and automation is difficult, since the mounting and dismounting to and from the device must be performed manually by an operator. The present invention has been made in view of the above problems, and has as its object to provide a pipe sanding apparatus that can automatically sand a synthetic resin pipe without bothering an operator.

[0005]

In order to achieve the above object, a pipe sanding apparatus according to the present invention comprises a standby station for holding a pipe in a horizontal state, and one end while rotating the pipe in a horizontal state by a rotation drive mechanism. An adhesive application station for applying an adhesive over a predetermined range on the outer peripheral surface of the side, and holding the pipe coated with the adhesive horizontally between the shooter and the sand pan, while rotating the pipe by a rotary drive mechanism A sanding station for dropping sand from the shooter and adhering sand to an adhesive application portion of the pipe, an unloading conveyor for supporting the sanded pipe at a portion other than the sand adhering portion and unloading, and the bonding from the standby station. A first transfer conveyor for horizontally transferring a pipe to an adhesive application station; and a sanding station from the adhesive application station. Comprising a second transport conveyor for transporting the pipe in a horizontal state to tio down, and a third transport conveyor for transporting the pipe in a horizontal state from the sand with station to the output conveyor.

In the pipe sanding apparatus according to the present invention, the standby station, the adhesive application station, the sanding station, and the start end of the carry-out conveyor are arranged at regular intervals on a straight line, and the first transfer conveyor, 2 A transfer member and a third transfer conveyor are integrally configured by a tact conveyor, and the tact conveyor is supported on the stations so as to be capable of reciprocating and ascending and descending in a range corresponding to an arrangement interval in the station arrangement direction. And three lifting members suspended from the gantry member at an interval equal to the station interval and capable of lifting the pipe (claim 2).

Further, in the pipe sanding apparatus according to the present invention, there is provided an end surface contact belt in which the unloading conveyor extends in the conveying direction and travels in contact with an end surface of the pipe on a sand adhering portion side; The pipe is extended vertically above the end contact belt at a considerable distance in the direction perpendicular to the conveying direction and parallel to the end contact belt in such a manner as to be inclined downward and toward the end contact belt. The present invention may be configured to include a peripheral contact belt that travels with a surface portion placed thereon, and a traveling drive mechanism that drives the peripheral contact belt and the end contact belt at the same speed (claim 3). it can.

Further, in the pipe sanding apparatus according to the present invention, the adhesive application station is provided at a predetermined position with respect to a positioning member which comes into contact with the pipe which is rotationally driven by the rotary driving mechanism. And a nozzle pipe having a plurality of adhesive discharge nozzles arranged in a longitudinal direction of the pipe, and an application roller which is driven to rotate and comes into contact with a peripheral surface of the pipe (claim 4). Can be.

[0009]

In the pipe sanding apparatus according to the present invention, a pipe is carried into a standby station by a conveyor or the like, and the pipe is transferred to an adhesive application station by a first transfer conveyor and glued, and then the sand is transferred by a second transfer conveyor. It is transferred to an application station, sand is applied to the adhesive application section, and then transferred to a carry-out conveyor by a third transfer conveyor. Therefore, a series of steps from the loading of the pipe to the gluing, sanding and unloading can be performed automatically and continuously.

In the pipe sanding apparatus according to the second aspect of the present invention, the transfer of the pipes between the stations can be performed by one tact conveyor, that is, the processing is completed at the same processing time at each station. The transferred pipes are transferred by one tact conveyor, so that the apparatus can be downsized and the structure can be simplified. According to a third aspect of the present invention, there is provided a pipe sanding apparatus according to the third aspect of the present invention, wherein the end surface on the sand-attached portion side is an end-face contact belt, and the peripheral surface other than the sand-attached portion is a peripheral surface contact belt. It is possible to prevent the attached sand from peeling off since it is transported in a state of contact with the sand. Furthermore, in the pipe sanding apparatus according to the fourth aspect of the present invention, when applying the adhesive to the pipe, the adhesive flowing out from the nozzle of the nozzle pipe to the pipe peripheral surface is leveled by the application roller, so that the adhesive is uniformly bonded. An agent can be applied.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 20 show a pipe sanding apparatus according to an embodiment of the present invention. FIGS. 1 and 2 are front views, FIGS. 3 and 4 are plan views, and FIGS. FIGS. 11 to 15 show a sanding station, FIGS. 16 to 18 show a carry-out conveyor, and FIGS. 19 and 20 show a tact conveyor.

As shown in FIGS. 1 to 4, a pipe sanding apparatus according to this embodiment includes a carry-in conveyor 100, a standby station 200, and an adhesive application station 30.
0, sanding station 400 and unloading conveyor 50
0, these stations 200, 300, 400
The tact conveyor 600 is provided on the receiving section (start end) of the unloading conveyor 500. Although detailed description is omitted, these stations 200, 300, and 400 are linearly arranged at equal intervals in a substantially airtightly sealed panel assembly H, and each of the conveyors 100, 5 is provided in the panel assembly P.
An air curtain is provided at a connection portion with 00.

The pipe P targeted by the pipe sanding apparatus in this embodiment is a pipe (joint) made of resin such as vinyl chloride. Although not shown, the pipe P has sand attached to the outer peripheral surface at one end by a pipe sanding device for a predetermined length, and the sanded portion is made of concrete sewage as described in the above-mentioned publication. Is connected using a mortar or the like.

The carry-in conveyor 100 comprises a belt conveyor, and conveys the pipe P toward the standby station 200 in an inclined state in which the sanded portion is located on the lower side. The carry-in conveyor 100 is provided with two pipe detection sensors 111 and 112 on the standby station side, separated from each other in the transport direction, and is continuous with the standby station 200 by the chute plate 101. The carry-in conveyor 100 controls the conveyance of the pipe P based on the detection outputs of the pipe detection sensors 111 and 112, and conveys the pipe P at a high speed until the rear sensor 112 detects the pipe P.
When 1 detects the pipe P, it transfers the pipes P one by one according to the presence or absence of the pipe P in the standby station 200. In addition, the carry-in conveyor 100 in this embodiment has substantially the same configuration as the carry-out conveyor 500 described in detail later,
The description is omitted.

As shown in FIG. 2, the standby station 200 is provided with a mounting block 201 having a V-groove formed on the upper surface thereof in the apparatus frame F, and the above-described chute plate 101 is directed toward the upper surface of the mounting block 201. It is arranged to be inclined downward. In this standby station 200, the pipe P is placed on the upper surface of the mounting block 201 via the chute plate 101.
Is sent, and the pipe P is held on the mounting block 101 in a horizontal state where the axis is horizontal.

The adhesive application station 300 is provided with a positioning / rotating mechanism 310 and an application mechanism 350.
As shown in FIGS.
, Two rotatable shafts 311 are rotatably supported on the device frame F, and receiving rollers 312 are fixedly mounted on both ends and intermediate portions of these rotatable shafts 311 so that the pipe P can be mounted thereon, respectively.
As shown in FIGS. 9 and 10, a pair of pressing rollers 313 is provided above one end (right side in the drawing) of the rotating shaft 311.
A positioning member 314 is provided to face the other end of the rotating shaft 311.

A pulley 315 is fixed to one of the rotating shafts 311, a motor 316 is provided below the rotating shaft 311, and a pulley 31 provided on the rotating shaft of the motor 316 is provided.
318 between the pulley 315 and the pulley 315 of the rotating shaft 311
Is mounted. The motor 316 is connected to a controller (not shown), and is controlled by the controller to rotate the rotating shaft 311.
Is driven to rotate.

Each of the pressing rollers 313 is rotatably mounted on a forked bracket 319, and the bracket 319 is supported by a lifting cylinder 321 so as to be able to move up and down. The elevating cylinder 321 is connected to a pressurized air source or the like (not shown), and a control valve provided in this pipe is connected to a controller to be controlled. This pressing roller 313 is
When the lifting cylinder 321 is moved downward, the pipe P on the receiving roller 312 is pressed from above while allowing rotation.

The positioning member 314 includes a long roller 314a.
And a short roller 314b.
14b is attached to the movable plate 322 so as to be rotatable about a vertical axis. The rollers 314a and 314b are positioned on a vertical line with the short roller 314b positioned downward and the long roller 314a separated upward, and rotate while contacting the end face of the pipe P. Although not shown, the moving plate 322 is connected to an actuator such as a cylinder, and is driven to advance and retreat in a predetermined range in the longitudinal direction of the rotating shaft 311. When the pipe P is transferred onto the receiving roller 312, the positioning member 314
22 moves forward and each roller 314a, 314b
Positioning is performed by abutting against the end face of.

The coating mechanism 350 is, as shown in FIG.
A positioning roller 359 is rotatably mounted on a mounting member 352 supported by a lifting cylinder 389 so as to be able to move up and down, and a nozzle pipe 353 is detachably provided on the mounting member 352 in parallel with the pipe P. The nozzle tube 353 is
It has a plurality of nozzles on the lower surface, and the upper center is the adhesive tank 3
54 is connected to a hose 355 having a flow control valve 355a. The nozzle tube 353 is directly attached to the third link 363 without providing the attachment member 352, and the application roller 3
It is also possible to adopt a configuration in which the adhesive is directly dropped on the 51.

The application mechanism 350 is configured by providing an application roller 351 supported by a linkage having two sets of parallel link mechanisms 360 arranged side by side so as to be in contact with the pipe P. As shown in detail in FIG. 6, the parallel link mechanism 360 has a first link 361, a second link 362, a third link 363, and a driving cylinder 379, and the cylinder 379 swings on the apparatus frame F. It is freely attached and rotatably connected to one end of the first link 361.
The first link 361 has an intermediate portion rotatably supported by the mounting bracket of the apparatus frame F, and has the other end connected to the first link 36.
The other end of the first link is rotatably connected to one end of the third link 363. In these link mechanisms 360, an intermediate shaft 371 is rotatably bridged between connecting portions of the first link 361 and the third link 363, and a pair of pulleys (not shown) are provided on the intermediate shaft 371.

The second link 362 has one end rotatably connected to the mounting bracket of the apparatus frame F at a position deviated from the connection position of the first link 361, and the other end rotatably connected to an intermediate portion of the third link 363. The third link 363 extends in parallel with the first link 361 to maintain a constant inclination angle. A rotating shaft 364 is rotatably mounted on the other end of the third link 363, and a receiving tray 369 is fixedly provided. Saucer 369
Is positioned vertically below the application roller 351 and receives the adhesive dropped from the application roller 351.

The application roller 351 is fixed to one end of the rotating shaft 364, and a pulley 367 is fixed to the other end. The application roller 351 is coated with sponge rubber or the like, and is preferably formed by implanting brush bristles on the peripheral surface, and leveling the adhesive applied by the nozzle tube 353 on the peripheral surface of the pipe P. The intermediate shaft 371 described above is attached to the pulley 367.
And a belt 378 is mounted between the other pulley of the intermediate shaft 371 and the pulley 377 of the rotation shaft of the motor 376.
4 is connected to a motor 376 via a belt 378. The motor 376 is provided on the device frame F by the motor 316 described above.
And are controlled by a controller.

In the adhesive application station 300, when the pipe P is transferred onto the receiving roller 312 by the tact conveyor 600, the positioning member 314 moves forward toward the end face of the pipe P to perform positioning. The pressing roller 313 descends to receive the pipe P and the roller 31
2 so as to be rotatable. And in this state,
The receiving roller 312 is driven to rotate.
1 is rotationally driven to flow the adhesive from the nozzle of the nozzle tube 353 to the peripheral surface of the pipe P, and the adhesive is applied to a predetermined portion of the outer peripheral surface of the pipe P.

The sanding station 400 includes a sand pan 4
09 and a pair of receiving rollers 411 on which the pipe P can be placed.
And a pressing roller 412 and a positioning member 413 in the same manner as the adhesive application station 300 described above,
In addition, it has a sand removal mechanism 420. Although illustration and detailed description are omitted, each of the receiving rollers 411 is fixed to a rotating shaft, a pulley is fixed to one rotating shaft, and a belt is mounted between the pulley and the pulley of the motor. . The pressing roller 412 is also supported by a cylinder so as to be able to move up and down similarly to the pressing roller of the adhesive application station 300, and rotatably clamps the pipe P with the receiving roller 411. Further, the positioning member 413 is also connected to the receiving roller 41.
When the pipe P is transferred onto the pipe 1, the pipe P advances toward the end face of the pipe P and positions the pipe P in the longitudinal direction. The sanding station 400 is provided with the positioning member 4 described above.
13 and the like, various configurations are common to the adhesive application station 300 described above, but description and illustration of common parts are omitted.

As shown in FIGS. 11 and 12, the sand dropping mechanism 420 has a sand stock tank 421 disposed above the receiving roller 411. An autoloader 422 is provided above the sand stock tank 421, and a pipe P is provided below. A rectangular tube-shaped tumbling pipe 441 extending in the longitudinal direction is provided integrally, and a shutter mechanism 423 is provided on the tumbling pipe 441 so as to be openable and closable. The autoloader 422 is connected to a pipe 422a connected to a negative pressure source (not shown) and a pipe 422b connected to a sand supply device (not shown), and sucks sand with a negative pressure supplied from the negative pressure source to supply a sand stock tank 421. Supply within.

The shutter mechanism 423 is shown in FIGS.
As shown in FIG. 5, the support shaft 4 is rotatably attached to the sand removal pipe 441.
A shutter member 443 is fixed to the support shaft 442 along the longitudinal direction so as to be able to open and close the lower end opening of the sand removal pipe 441.
44 is fixedly provided. The shutter member 443 has a substantially strip shape, and one side edge is fixed to the peripheral surface of the support shaft 442 by welding or the like. The opening / closing lever 444 has a substantially fan shape, one end of which is the support shaft 4.
42, and a long hole 444a is formed at the other end. The opening / closing lever 444 locks a rod tip of a cylinder described later in the long hole 444a, and is driven by the cylinder to swing within a predetermined angle range. 445 is a guide cylinder.

A bracket 446 is fixed to one side of the sand removal pipe 441, and a cylinder 447 and a stopper bolt 448 are provided on the bracket 446. The cylinder 447 has a cylinder body slidably mounted on a bracket 446 and a rod end slidably formed in a long hole 444 a of an opening / closing lever 444. This cylinder 4
47 is controlled by a controller (not shown) to swing the opening / closing lever 444, that is, open / close the shutter member 443. The stopper bolt 448 is threaded through the bracket 446 so that the tip can contact the opening / closing lever 444, and is fixed at an arbitrary threaded position by the lock nut 449. The stopper bolt 448 is connected to the shutter member 44.
The maximum opening of No. 3 is regulated to be adjustable.

In the sanding station 400, when the pipe P is transferred onto the receiving roller 411 by the tact conveyor 600, the pipe P is positioned in the longitudinal direction by the positioning member 413, and then the pressing roller 41 is positioned.
2 descends and receives the pipe P so as to be rotatable with the roller 411. Then, in this state, the receiving roller 41
1 is driven to rotate, and the shutter mechanism 423 drives the shutter member 443 in the opening direction by the cylinder to drop sand onto the adhesive-applied portion of the pipe P, and attach the sand to the adhesive-applied portion of the pipe P.

As shown in FIGS. 19 and 20, the tact conveyor 600 has an elevating member 601 supported up and down by an apparatus frame F, and a cylinder 602 for driving the elevating member 601 up and down is attached to the apparatus frame F. Provided. The elevating member 601 includes a substantially plate-shaped slide member (a gantry member).
603 is slidably mounted, and a cylinder 604 for driving the slide member 603 is provided. The slide member 603 has two substantially hook-shaped lifting members 6 at three locations on the lower surface that are equally spaced in the sliding direction.
05A, 605B, and 605C (hereinafter referred to as 60
5) are suspended in a direction perpendicular to the sliding direction so that the pipe P can be hooked. Cylinder 602,
Reference numeral 604 is controlled by the controller similarly to the above-described cylinders and the like.

The tact conveyor 600 includes a lifting member 6
After lowering 01 to advance the slide member 603 by a predetermined distance, the elevating member 601 (slide member 603) is raised to lift the pipe P by the lifting member 605. That is, the lifting member 605A is connected to the standby station 2
00, the pipe P on the block 201 is lifted, and the lifting member 605B is
The lifting member 605C lifts the pipe P on the receiving roller 411 of the sanding station 400.

Subsequently, the slide member 603 moves forward by a predetermined distance and descends, and the suspended pipe P is placed on the lifting member 605. That is, the lifting member 605C transfers the pipe P to the unloading conveyor 500, and the lifting member 605B
Roller P of sanding station 400
11, and the lifting member 605 </ b> A places the pipe P on the receiving roller 312 of the coating station 300. Next, the slide member 603 retreats and moves up by a predetermined distance, and further, each lifting member 605 retreats to its original position.
Prepare for the next transport. The above-described tact conveyor 600 constitutes a first transfer conveyor, a second transfer conveyor, and a third transfer conveyor.

The unloading conveyor 500 is shown in FIGS.
As shown in FIG. 8, a conveyor frame 510 having an upper portion inclined in a direction orthogonal to the conveying direction is provided.
21 are provided so as to be rotatably inclined, and vertical rotating shafts 522 are rotatably erected on both sides of the lower edge of the conveyor frame 510 in the transport direction. 555 is a side plate.

The inclined rotary shaft 521 is provided with three pulleys 531 spaced apart from each other by a predetermined distance from the inclined lower end and spaced apart from each other. A transport belt 532 is mounted between the pulleys 531 of the inclined rotary shaft 521. Is done. One inclined rotary shaft 521 has an inclined lower end connected to one vertical rotary shaft 522 via a bevel gear mechanism 524 so as to be integrally rotatable, and a driven pulley 525 is fixedly provided. A belt 527 is mounted on the inclined rotary shaft 521 between the driven pulley 525 and a drive pulley 526 fixed to the rotary shaft of the drive motor 523 described above.
23 and rotates integrally with the vertical rotation shaft 522.

Further, two pulleys 534 are fixed to the vertical rotating shaft 522 so as to be vertically separated from each other, and end transport belts 535 are hung vertically between the pulleys 534 of the vertical rotating shaft 522. Is done. These end transport belts 535 contact the end surfaces of the pipes P to be transported on the sand-attached portion side, and run at the same speed as the transport belt 532 described above.

In the unloading conveyor 500, the pipe P, which has been sanded, is transferred by the above-mentioned tact conveyor 600 so that the sand-attached portion is directed toward the end conveying belt 535, and the end conveying belt 535 is moved to the sand of the pipe P. The end face on the attachment part side,
The transport belt 532 is brought into contact with the peripheral surface of the pipe P other than the sand-attached portion, and in this state, the belts 532 and 535 travel at the same speed to transport (unload) the pipe P.

In this embodiment, the carry-in conveyor 100 uses a conveyor having the same configuration as the carry-out conveyor 500, but the carry-in conveyor 100 may use a normal conveyor. That is, the unloading conveyor 50
0 adopts a configuration for preventing the sand-attached portion where the sand is applied from coming into contact with other members or the like, but such a configuration is not required for the carry-in conveyor 100, so that a normal conveyor can be used. It is.

In this embodiment, the pipe P is carried into the standby station 200 by the carry-in conveyor 100, and the pipe P of the standby station 200 is transferred to the adhesive application station 300 by the tact conveyor 600, and The pipe P on which the adhesive has been applied is transferred to the sanding station 400 by the tact conveyor 600 to attach sand to the glued portion, and the pipe P with the sand is attached by the tact conveyor 600. It is transferred to the unloading conveyor 500 and unloaded by the unloading conveyor 500.

That is, the adhesive application station 300
When the pipe P is transferred from the standby station 200 to the receiving roller 312 by the tact conveyor 600, the positioning member 3 is moved toward the end of the pipe P.
After the pipe 14 moves forward and the pipe P is aligned in the longitudinal direction, the pipe P is held down by the pressing roller 313 and the receiving roller 312.
, The application roller 351 is brought into contact with the glued portion of the pipe P, the receiving roller 312 and the application roller 351 are rotated, and the adhesive is flowed from the nozzle tube 353 to the predetermined portion of the pipe P. Apply adhesive to

Here, the adhesive application station 30
0, the nozzle tube 353 is provided on the mounting member 352 provided with the positioning roller 353, that is,
In order to provide the nozzle pipe 353 at a predetermined position with respect to the positioning roller 35 that contacts the peripheral surface of the pipe P, the nozzle pipe 35
3 can always be kept constant with respect to the pipe P, and the application of the adhesive can be performed reliably. When the diameter or the like (type) of the pipe P is changed or when the application roller is maintained, as shown by a two-dot chain line in FIG.
The position of 1 may be changed.
Since the application roller 351 is supported by 60, the positions of the application roller 351 and the tray 369 can be maintained constant, and the adhesive can be prevented from dripping.

In the sanding station 400, the pipe P on which the adhesive is applied is connected to the tact conveyor 60.
When it is transferred onto the receiving roller 411 by 0, the pressing roller 412 descends and clamps the pipe P with the receiving roller 411. Then, in this state, the receiving roller 411
The shutter member 443 of the sand stock tank 421 is driven to open while rotating, and sand is dropped from the tank 421, and sand is applied to the adhesive applied portion of the pipe P.

Further, the unloading conveyor 500 conveys the pipe P transferred from the sanding station 400 by the tact conveyor 600 without bringing the sand-attached portions into contact with each other. That is, the unloading conveyor 500 is connected to the pipe P
Of the pipe P is brought into contact with the end surface transport belt 535, and the peripheral surface of the pipe P other than the sand-attached portion is placed on the transport belt 532 and transported in an inclined state. Therefore, the sand-attached portion of the pipe P does not come into contact with the belt or the like, and the sand at the sand-attached portion does not peel off.

In this pipe sanding apparatus, the starting stations of the standby station 200, the adhesive application station 300, the sanding station 400, and the unloading conveyor 500 are arranged at regular intervals on a straight line, and the pipe P between these stations is formed. The transfer is performed by the tact conveyor 600. That is, the tact conveyor 600 includes a slide member 603 that reciprocates and moves up and down a predetermined distance and is provided with three sets of lifting members 605 spaced apart in the moving direction. The transfer of the pipe P is performed. Therefore, the size of the device can be reduced, and the configuration of the device can be simplified.

In the above-described embodiment, the tact conveyor 600 is transferred by hooking the pipe P by the lifting member 605.
It is possible to adopt various types of conveyors, such as ones that hold and transfer, and those that transfer by suction.

[0045]

As described above, according to the pipe sanding apparatus of the present invention, the pipe carried into the standby station is transferred to the adhesive application station by the transfer conveyor, and the pipe is transferred at the adhesive application station. The adhesive is applied to a predetermined area of the outer peripheral surface while rotating in a horizontal state, and then the pipe on which the adhesive has been applied is transferred to a sanding station, where sand is dropped on the adhesive applied portion and adhered, and the sand is removed. Since the attached pipe is transferred to the unloading conveyor and unloaded, a series of steps from the loading of the pipe to the application of the adhesive, sanding and unloading can be automatically performed, thereby reducing the number of man-hours for the operator.

According to the pipe sanding apparatus according to the second aspect of the present invention, the standby station, the adhesive application station, the sanding station, and the start ends of the unloading conveyor are arranged at regular intervals on a straight line. A tact conveyor is constructed by providing three lifting members at intervals equal to the reciprocating distance on a base member capable of reciprocating and elevating and lowering a distance equal to these intervals, and transfer of pipes between stations by the tact conveyor. Therefore, the overall configuration of the device can be simplified, and the size of the device can be reduced.

In the pipe sanding apparatus according to the third aspect of the present invention, the unloading conveyor uses the sanded pipe with the end face on the sand adhering portion side as the end face contact belt and the peripheral portion other than the sand adhering portion. Since the surface is brought into contact with the peripheral surface contact belt and carried out, the sand-attached portion does not come into contact with other members such as the belt when carrying out the pipe, so that the sand can be prevented from coming off. Further, according to the pipe sanding apparatus according to the fourth aspect of the present invention, the nozzle pipe is provided at a predetermined position with respect to the positioning member that comes into contact with the pipe, and the adhesive flowing from the nozzle pipe to the pipe peripheral surface is provided. Since it is leveled by the application roller, the adhesive can be applied uniformly and reliably.

[Brief description of the drawings]

FIG. 1 is a front view showing the entire left half of a pipe sanding apparatus according to one embodiment of the present invention.

FIG. 2 is a front view showing a right half of the pipe sanding apparatus.

FIG. 3 is a plan view showing the left half of the entire pipe sanding apparatus.

FIG. 4 is a plan view showing a right half of the pipe sanding apparatus.

FIG. 5 is a front view showing an adhesive application station of the pipe sanding apparatus.

FIG. 6 is a partially enlarged view of FIG. 5;

FIG. 7 is a side view of the adhesive application station.

FIG. 8 is a plan view of the adhesive application station.

FIG. 9 is a front view of a sanding station of the pipe sanding apparatus.

FIG. 10 is a side view of the sanding station.

FIG. 11 is an enlarged front view of a part of the sanding station.

FIG. 12 is an enlarged side view of a part of the sanding station.

FIG. 13 is a side view of a main part of the sanding station.

FIG. 14 is a front view of a main part of the sanding station.

FIG. 15 is an enlarged front view in which a main part of the sanding station is cut away in section.

FIG. 16 is a plan view of a carry-out conveyor of the pipe sanding apparatus.

FIG. 17 is a front view of the carry-out conveyor.

FIG. 18 is a side view of the carry-out conveyor.

FIG. 19 is a front view of a tact conveyor of the pipe sanding apparatus.

FIG. 20 is a side view of a part of the tact conveyor.

[Explanation of symbols]

 REFERENCE SIGNS LIST 100 carry-in conveyor 200 standby station 300 adhesive application station 312 receiving roller 313 pressing roller 314 positioning member 351 elevating cylinder 352 mounting member 353 nozzle tube 359 positioning roller 360 parallel link mechanism 391 application roller 400 sanding station 411 receiving roller 412 pressing roller 42 Sand stock tank 423 Shutter mechanism 500 Unloading conveyor 532 Transport belt 535 End transport belt 600 Tact conveyor 601 Lifting member 602 Slide member (frame member) 605 Lifting member F Device frame

Claims (4)

[Claims] A standby station for holding the pipe in a horizontal state; an adhesive application station for applying an adhesive over a predetermined range to an outer peripheral surface at one end while rotating the pipe in a horizontal state by a rotation drive mechanism; A sanding station for holding the pipe coated with a horizontal between a chute and a sand pan, dropping sand from the chute while rotating the pipe by a rotary drive mechanism, and applying sand to an adhesive application section of the pipe. An unloading conveyor that supports the sanded pipe at a portion other than the sand adhering section and unloads the pipe; a first transfer conveyor that transfers the pipe horizontally from the standby station to the adhesive coating station; A second transfer conveyor for transferring pipes horizontally from a sanding station to the sanding station; And a third transfer conveyor for transferring the pipe in a horizontal state from the transfer conveyor to the carry-out conveyor. 2. A standby station, an adhesive application station, a sanding station, and a start end of an unloading conveyor are arranged at regular intervals on a straight line, and the first transfer conveyor, the second transfer conveyor, and the third transfer conveyor are tacted. The tact conveyor is integrally formed by a conveyor, and the tact conveyor is supported on the respective stations in a direction corresponding to the arrangement interval in the station arrangement direction so as to be able to reciprocate and move up and down. And three lifting members that are suspended at equal intervals and are capable of lifting the pipe. 3. An end-face contact belt extending in the conveying direction and running in contact with an end face of the pipe on the sand-attached portion side, and a conveying direction perpendicular to the end-face contact belt. A peripheral surface extending vertically above the end surface abutment belt at a considerable distance and parallel to the end surface abutment belt in a manner inclined downward and toward the end surface abutment belt, and running on the peripheral surface portion other than the sand-attached portion of the pipe. The pipe sanding apparatus according to claim 1 or 2, further comprising a contact belt, and a traveling drive mechanism that drives the peripheral contact belt and the end contact belt at the same speed. 4. The adhesive application station is provided at a predetermined position with respect to a positioning member that contacts a pipe rotationally driven by the rotation driving mechanism, and is arranged in a longitudinal direction of the pipe. A nozzle tube having a plurality of adhesive discharge nozzles, and an application roller which is driven to rotate and comes into contact with a peripheral surface of the pipe.
The pipe sanding apparatus according to claim 2 or 3.