JP2003335413A - Automatic pipe supply device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an automatic pipe supply device requiring no reloading work of pipes, and surely supplying a number of pipes loaded on a conveying carrier one by one to a processing machine. <P>SOLUTION: One end part 21a of a spring 21 is wound up by a winding-up pulley 13, whereby a number of pipes P lifted up by the spring 21 are supplied to an inclined rail 12 one by one while preventing the collapse by a prevention plate 19. The control of the winding-up motion of the winding-up pulley 13 is performed by repeating the motion that the winding-up pulley 13 is wound back for 1.5 seconds first, then a heap of the pipes P is collapsed to a side opposite to the inclined rail 12, and the winding-up pulley 13 is stopped for 2 seconds, and then wound up for 2 seconds to draw the collapsed pipes P to the inclined rail 12 side. After the pipes P are drawn for 2 seconds, the winding-up pulley 13 is stopped again for 2 seconds, and is wound back for 1.5 seconds by returning to the initial stage. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic pipe supply device for supplying a large number of cylindrical pipes, which have been loaded and transported on a transport carriage, to a processing step.

[0002]

2. Description of the Related Art FIG.
An example of a conventional device for supplying P to the processing machine 100 one by one is shown.

That is, three nylon slings 81 are passed under a large number of pipes P carried by a carrier 70, and both ends of the nylon slings 81 are hooked on hooks 83 to be attached to a rail 84. By pulling up the (crane) 82, the pipes P are collectively lifted upward, and the pipes P are set in the supply device 90 arranged above the pipe processing machine 100.

The supply device 90 is composed of a plurality of (three in the present embodiment) inclined plates 91 to 93 and a vertically movable conveyor 94. Then, when the pipe P is set on the uppermost inclined plate 91 provided on the second floor of the factory, the pipe P has inclined plates 92, 93 provided alternately inclined in the opposite direction in the figure, When it moves downward while rolling in the direction of the arrow and reaches the lowermost part of the inclined plate 93, the partition plate 96 movable in the left-right direction is moved in the direction of the arrow M in the drawing to be opened, thereby lowering the lowermost part. One pipe P is attached to the conveyor 94, and the pipe receiving portion 95 is attached.
Placed on. After the placement, the partition plate 96 is moved in the opposite direction and closed. After that, the pipe P placed on the pipe receiving portion 95 is moved downward by the conveyor 94, and is supplied while being rolled into the processing machine from the receiving port 101 of the pipe processing machine 100 (this is conventional. Technology 1).

FIG. 11 shows the shape of the carriage 70.

The carrier 70 has a rectangular carrier body 71.
Wheels 72 are attached to the four corners of each of the poles, and poles 73 for holding the pipe P are provided on both side portions along the longitudinal direction.
Is attached. Further, three trolleys 74 are arranged in the trolley body 71 at predetermined intervals in the longitudinal direction, and the pipes P are loaded on the trolley 74. That is, a sleeper-shaped gap 75 is formed between the carriage main body 71 and the pipe P, and the nylon sling 71 is passed through the gap 75.

Further, FIG. 12 shows that the pipe P has a processing machine 100.
Another example of the supply device 60 for supplying one by one is shown.

The supply device 60 includes a slant rail 6 to which one end 81a of three nylon slings 81 is fixed.
It consists of 1. That is, the inclined rail 61 has one end portion 61a higher than the other end portion 61b,
One end 81a of the nylon sling 81 is fixed to the one end 61a. Further, the other end portion 61b of the inclined rail 61 is arranged at the receiving port 101 of the pipe processing machine 100.

When the carriage 70 is conveyed to the front of the feeder 60, the other end 81b of the nylon sling 81 is passed through the gap 75 between the carriage body 71 and the pipe P and hooked on the hook 83. In this state, by gradually raising the hoist 82, the pipe P is lifted so as to be pushed toward the one end portion 61a of the inclined rail 61 and is sequentially supplied to the inclined rail 61, and the pipe P is machined on the processing machine 100. It is designed to roll to the receiving port 101 (this is referred to as prior art 2).

[0010]

However, the above-mentioned prior art 1 has the following problems. (1) A device and manpower for transshipment work from the carriage 70 to the supply device 90 are required, which is costly. (2) A sufficient space for stocking the pipes P is required in the supply device, and the installation device is large because the supply device is large. (3) When the space for stock is less than the number of the loaded carriages 70, the carriage 70 to the supply device 90
Since it is necessary to transfer the products to and from them in multiple times, the frequency of work by workers increases. (4) In the process in which the pipe P rolls on each of the inclined plates 91 to 93, the pipe P is tilted due to warpage or the like, and a clogging state as shown in FIG. (5) As the number of pipes P increases, the frequency of occurrence of blocking due to its own weight increases.

Further, the above-mentioned prior art 2 has the following problems. (6) When the pipes P are pulled up in a heaped state, there is a risk that the upper pipes P may collapse and it is difficult to supply the pipes one by one. (7) It is necessary for the worker to pull up the nylon sling 81 while counting the number of stocks.
Every time there is no stock on the inclined rail 61, it is necessary to raise the stock by a certain height, which is troublesome.

The present invention was devised to solve such a problem, and its purpose is to eliminate the need for transshipment work of pipes and to ensure that a large number of pipes loaded on a carrier truck are piped one by one. An object of the present invention is to provide an automatic pipe feeder capable of feeding to a processing machine.

[0013]

SUMMARY OF THE INVENTION An automatic pipe feeder according to the present invention is a device for feeding a cylindrical pipe to a processing machine which is the next step, and is a device for feeding a large number of stacked cylindrical pipes downward. And a pipe support member having one end releasably locked to the locking means and the other end fixed to the winding pulley of the winding means, and the vicinity of the winding pulley. One end portion is arranged and the other end portion is arranged adjacent to the next step, and is arranged above the hoisting pulley and a stock portion composed of an inclined rail for stocking a predetermined number of the pipes. It is characterized in that it is provided with a prevention plate for preventing the mountain collapse of a large number of supported pipes and supplying the pipes one by one to the stock portion.

According to the present invention having such characteristics,
By winding up the other end of the pipe support member by the winding means, a large number of pipes lifted by the pipe support member can be reliably supplied to the stock portion one by one while the landslide is prevented by the prevention plate. Become. That is, the pipes are supplied to the stock portion one by one through the gap between the prevention plate and the winding pulley. Further, since all the pipes are simultaneously lifted upward by the pipe supporting member made of nylon sling and the winding pulley of the winding means and the pipes are directly sent to the stock portion, the transshipment work of the pipes is not necessary. Further, according to the pipe automatic supply device of the present invention, the large number of pipes are loaded on the transport vehicle in a state where a gap is formed between the pipe and the pipe support member, and the pipe support member has the one end portion. It is characterized in that it is locked to the locking means through a gap of the transport carriage.

According to the present invention having such characteristics,
A large number of pipes loaded on the carrier truck can be directly lifted from the carrier truck by the pipe support member without unloading from the carrier truck.

According to the pipe automatic supply device of the present invention, the inclined rail is provided so that one end side is higher than the other end side, and the other end side is slightly smaller than the width of one pipe. Widely provided first and second shunt members are arranged, and a feed means for individually moving the shutter members up and down to feed the pipes one by one to the next process is provided.

According to the present invention having such characteristics,
The plurality of pipes stocked in the stock section can be reliably supplied to the processing machine one by one.

Further, according to the pipe automatic supply apparatus of the present invention, the winding means gradually winds up the pipe supporting member while repeating rewinding and winding. Specifically, first, rewinding for the first time, after stopping for a fixed time, then winding up for a second time slightly longer than the first time, after stopping for a fixed time, rewinding for the first time again. It is characterized in that the control is repeated to gradually wind up the pipe supporting member.

According to the present invention having such characteristics,
Since the rewinding operation is performed before the winding operation, the blocking of the pipe, which is likely to occur near the entrance of the stock portion (that is, near the gap between the winding pulley and the prevention plate), is less likely to occur. In other words, once rewound, the pipe that was mountain-shaped so as to get close to the entrance of the stock part is shaken back, so blocking is eliminated, and after that, it is rolled up, so one pipe acts as a prevention plate. It will be smoothly supplied to the stock through the gap between the hoisting pulley.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is an overall configuration diagram showing an embodiment of an automatic pipe feeding apparatus of the present invention. In this embodiment,
A processing machine (apparatus for enlarging the outer diameter) 100 for processing the receiving end of a vinyl chloride pipe, a vinyl chloride pipe (pipe) P before processing
It is applied to the device that supplies.

This automatic pipe feeding device 1 is provided with a processing machine 10.
0 is provided side by side and is provided with a support frame 11 that supports an inclined rail 12 that serves as a stock portion of the pipe P. In FIG. 1, only one inclined rail 12 is shown on the front side, but actually, a pair of left and right (front and rear with respect to the paper surface in the drawing) are provided at a predetermined interval.

The inclined rail 12 is arranged so as to be inclined so that one end 12a located at the receiving port 101 of the processing machine 100 is lower than the other end 12b.

A hoisting pulley 13 is supported and fixed on a support frame 11 near the other end 12b of the inclined rail 12, and one end 21a of a nylon sling 21 is fixed to the hoisting pulley 13. There is. The winding pulley 13 is rotatably driven by a drive motor 14 fixed to the floor via a gear chain 15. In this embodiment, the winding pulley 13 has an outer diameter of 350 mm, and the drive motor 14
Uses an inverter-controlled geared motor.

Further, in this embodiment, three slings 21 are used, and correspondingly, the winding pulley 13 is used.
Also, three pieces are provided on the support frame 11 at predetermined intervals in the width direction. The drive motor 14 drives these three hoisting pulleys 13 simultaneously at the same timing. In addition, the other end 21b of the sling 21
A hook 22 is attached to the hook.

The first end 12a of the inclined rail 12 is slightly wider than the width of one pipe P.
The shutter member 16 and the second shutter member 17 are arranged so as to project upward from the inclined rail 12, and the first shutter member 16 and the second shutter member 17 are individually moved up and down on the support frame 11. An air cylinder 18 which is a driving means for is attached. Although only one air cylinder 18 is shown in the drawing, in actuality, the first shutter member 16 and the second shutter member 1 are actually provided.
Two are provided corresponding to 7 respectively. These first
The second shutter members 16 and 17 and the air cylinder 18 constitute a feeding device for feeding the pipes P one by one to the processing machine 100. Six pipes P are stored in the inclined rail 12 between the other end 12b and the first shutter portion 16.

On the other end 12b of the inclined rail 12 and above the winding pulley 13, a prevention plate 19 for preventing landslides is arranged via a gap S through which one pipe can pass. ing. This prevention plate 19 is used for the sling 2
The pipe P lifted by 1 is provided so as to be inclined so as to guide it to the inclined rail 12 side.

A detection sensor 20 for detecting the sixth pipe P stocked on the inclined rail 12 is arranged below the other end 12b of the inclined rail 12, and the output of this detection sensor 20 is provided. Is connected to a control unit 40 that controls the entire automatic pipe feeder of the present invention.
The control unit 40 also controls the hoisting operation of the sling 21 by the drive motor 14 and the vertical operation control of the first and second shutter members 16 and 17 by the air cylinder 18 based on the detection signal of the detection sensor 20.

On the other hand, on the left side of the inclined rail 12, three columns 31 are erected at positions facing the respective winding pulleys 13. However, in FIG. 1, only the one on the front side is shown. One end of a nylon sling 32 is fixed to the upper ends of the columns 31. The other end of the nylon sling 32 serves as a locking ring 33 for locking the hook 22 provided on the other end 21b of the sling 21.

Here, the pipe P is a vinyl chloride pipe for piping water and electric wires, and the pipe has a diameter of 50 A, 75.
6 sizes of A, 100A, 125A, 130A, 150A, the length of the pipe P is 1000mm and 2000mm
In the present embodiment, 150A and 200
The pipe P has a size of 0 mm.

The pipe P is connected to the carriage 7 shown in FIG.
It is loaded on 0 sleeper 74. The number of loading is 48, for example
The number of lines (6 lines × 8 rows) is possible.

Next, the pipe supply operation by the automatic pipe supply apparatus having the above-mentioned structure will be described with reference to the operation explanatory views shown in FIGS.

First, the carrier 70 loaded with the pipes P is carried to a position between the inclined rail 12 and the support column 31, and the other ends 21b of the three slings 21 in this state.
Through the gap 75 between the trolley body 71 and the loaded pipe P, and hooked on the sling 32 locking ring 33 fixed to the upper end of the column 31 at the opposite position. FIG. 2 shows this state.

In this state, when the winding pulley 13 is wound up, as the sling 21 is wound up by the winding pulley 13, the entire pipe P loaded on the carriage 70 is lifted, and the other end of the inclined rail 12 is lifted. 12
attracted to b. Therefore, from the pipe P near the inclined rail 12 through the gap S of the prevention plate 19 in order.
It is supplied on the inclined rail 12 one by one. Inclined rail 12
The pipe P supplied above rolls to the first shutter member 16 and stops. In this way, the six pipes P are stocked on the inclined rail 12. FIG. 3 shows this state.

At this time, the control section 40 gradually winds the sling 21 while repeating the rewinding and winding of the winding pulley 13. Specifically, first, the winding pulley 13 is unwound for 1.5 seconds to collapse the mountain of the pipe P on the side opposite to the inclined rail 12. afterwards,
After stopping for 2 seconds, this time the winding pulley 13 for 2 seconds
Is rolled up and the pipe P whose mountain has been collapsed is pulled toward the inclined rail 12 side. Then, after pulling for 2 seconds, it is stopped for 2 seconds again, after which it returns to the beginning and rewinds the winding pulley 13 for 1.5 seconds again.

That is, the operation of rewinding for 1.5 seconds, stopping for 2 seconds, winding for 2.0 seconds, stopping for 2 seconds
This cycle is repeated as a cycle. As a result, the sling 21 receives 0.
It will roll up for 5 seconds. That is, the winding for 0.5 seconds is substantially performed for 7.5 seconds. When the sling 21 is gradually rolled up by repeating such a cycle, the other end 12b of the inclined rail 12 is
The pipe P at a position close to is sequentially supplied to the inclined rail 12 through the gap S.

When the six pipes P are stocked on the inclined rail 12, the detection sensor 20 detects the last one pipe P supplied to the inclined rail 12, and the detection signal is sent to the control unit 40. Output. Upon receiving this detection signal, the control unit 40 suspends the winding operation of the winding pulley 13.

On the other hand, in the feeding device, the pipe P is supplied to the processing machine 100 in the procedure shown in FIG.

That is, by driving the air cylinder 18,
First, the first shutter member 16 is lowered (see FIG. 9A). As a result, the entire pipe P stocked on the inclined rail 12 rolls toward the second shutter member 17. After that, the first shutter member 16 is raised (see FIG. 9B). Thereby, the first shutter member 1
One pipe P stocked between 6 and the second shutter member 17 serves as a standby pipe that is next supplied to the processing machine 100.

After this, when the processing machine 100 finishes the processing of the pipe and the processing becomes ready, the second shutter member 1
7 is lowered again, and the waiting pipe P is supplied into the processing machine (see FIG. 9C).

Thereafter, when the second shutter member 17 is raised and the first shutter member 16 is lowered again, the entire pipe P stocked on the inclined rail 12 rolls toward the second shutter member 17 again. (See FIG. 9 (a)).

The control section 40 controls the vertical movement of the first shutter member 16 and the second shutter member 17 with respect to the feeding device.

On the other hand, in this way, the pipe P is processed by the processing machine 1.
00 in sequence, the pipe P on the inclined rail 12
Since the number of stocks of the pipes P is lifted by the sling 21 in the piled state,
Need to be supplied sequentially. This is because, for example, when the stock of the pipes P on the inclined rail 12 decreases from the maximum number of 6 to 5, the detection sensor 20 detects that the other end 12b of the inclined rail 12 has no pipe P. Therefore, the control unit 40 receiving this detection signal again controls the above-mentioned winding operation (rewind for 1.5 seconds, stop for 2 seconds,
Wind up for 2.0 seconds and start a cycle of 2 seconds stop). Then, during the winding operation control, one of the pipes P lifted by the sling 21 is supplied to the inclined rail 12 through the gap S, and six pipes P are again provided on the inclined rail 12. Once stocked,
Since the detection sensor 20 detects the last one pipe P again, the control unit 40 receiving this detection signal suspends the winding operation of the winding pulley 13 at this point. Thus, there are always six pipes P on the inclined rail 12.
Are being stocked.

FIG. 4 shows the winding pulley 13 thus constructed.
In the course of performing the hoisting operation, the pipes P are piled up in a mountain shape at the entrance of the inclined rail 12 (the gap S between the prevention plate 19 and the hoisting pulley 13). Even in the blocking state, by performing the above-mentioned winding operation control,
The blocking condition can be eliminated.

That is, as shown in FIG. 5, even if the pipes P are piled up in a mountain shape at the entrance (gap S) of the inclined rail 12, the hoisting operation control of the present invention will first perform 1.5. Since rewinding is performed for a second, the rewinding causes the piled pipes P to collapse as shown in FIG. 6 (blocking is eliminated).
It will be. Then, after this, a stop period of 2 seconds is set, and winding is performed for 2 seconds. Therefore, as shown in FIG.
The collapsed pipes P are supplied to the inclined rail 12 through the gaps S one by one while being blocked by the prevention plate 19.

The pipe P is not supplied to the inclined rail 12 even if the above-mentioned winding operation control (cycle for rewinding for 1.5 seconds, stopping for 2 seconds, winding for 2.0 seconds, stopping for 2 seconds) is performed for 3 cycles. In this case, for example, in the blocking state as shown in FIG. 8 (that is, when the sling 21 is blocked while being pulled to the full extent), the following rewinding operation control is further performed.

That is, the winding pulley 13 is rewound for 3 seconds to collapse the mountain of the pipe P on the side opposite to the inclined rail 12. Then, stop for 1 second. Next, the winding pulley 13 is wound up for 2 seconds. Then, stop for 1 second. That is, in this rewinding operation control, since the rewinding time is longer than the winding time, the purpose of the control is mainly to break the mountain. Also in the above, the pipe P may be supplied to the inclined rail 12 during the winding operation for 2 seconds. By performing such rewinding operation control, it is possible to prevent the drive motor 14 from being overloaded by forcibly winding up. After performing such a rewinding operation control for several cycles, the above winding operation control is performed again (cycle for rewinding for 1.5 seconds, stopping for 2 seconds, winding for 2.0 seconds, stopping for 2 seconds). Returning, the remaining pipes P are sequentially supplied to the inclined rail 12 side.

Since the hoisting operation control of the present invention starts with the rewinding operation first, the above blocking itself is less likely to occur.

In the present embodiment, it took 90 minutes to complete the supply of all the pipes P (48 pipes) by such pipe supply control, but the blocking is all eliminated by the winding operation control of the present invention. , No manual modification was required. On the other hand, when the pipe P was supplied by the conventional method, a supply failure (mainly blocking) of the pipe P occurred at a rate of about once every 15 minutes, and manual correction work was required.

[0050]

According to the pipe automatic feeder of the present invention,
Even if there is no space to stock the pipes above the processing machine, which is the next process, or if there is no man to do the transshipment work of the pipes, only the work of setting the nylon sling with the pipes loaded on the carrier Thus, the pipes can be automatically supplied one by one to the processing machine which is the next process.

Further, according to the pipe automatic supply device of the present invention, it is possible to automatically eliminate the blocking without causing the mountain collapse during the supply of the pipe and even when the blocking occurs. Therefore, it is not necessary to monitor the landslides and blocking, and to correct the troubles when they occur.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram showing an embodiment of an automatic pipe supply device of the present invention.

FIG. 2 is an explanatory diagram showing a state in which a pipe is lifted from a carrier truck in a pipe supply operation by the automatic pipe supply device of the present invention.

FIG. 3 is an explanatory view showing a state in which the pipe is lifted from the carrier in the pipe supply operation by the automatic pipe supply device of the present invention.

FIG. 4 is an explanatory view showing a state in which the pipe is lifted from the carrier in the pipe supply operation by the automatic pipe supply device of the present invention.

FIG. 5 is an explanatory view showing a blocking state in the pipe supply operation by the automatic pipe supply device of the present invention.

FIG. 6 is an explanatory view showing a state in which the blocking state is broken in the pipe supply operation by the automatic pipe supply device of the present invention.

FIG. 7 is an explanatory view showing a state in which a pipe in which a sling is rolled up and a blocking state is broken is supplied to an inclined rail in a pipe supply operation by the automatic pipe supply device of the present invention.

FIG. 8 is an explanatory view showing a blocking state in the pipe supply operation by the automatic pipe supply device of the present invention.

FIG. 9 is an explanatory diagram showing an operation procedure of supplying a pipe to a processing machine by a feeding device.

FIG. 10 is an explanatory view showing an example of a conventional device for supplying pipes to a processing machine one by one.

FIG. 11 is a perspective view showing the shape of a carrier truck.

FIG. 12 is an explanatory view showing another example of a conventional supply device for supplying pipes to the processing machine one by one.

FIG. 13 is an explanatory diagram showing a state where a pipe is clogged in a conventional supply device.

[Explanation of symbols]

1 Automatic pipe feeder 11 Support frame 12 inclined rails 13 hoisting pulley 14 Drive motor 15 gear chain 16 First shutter member 17 Second shutter member 18 Air cylinder 19 Prevention plate 20 detection sensor 21 sling 22 hook 31 props 32 nylon sling 33 Lock ring 40 control unit 70 carrier 100 processing machines P pipe

Claims (5)

[Claims] 1. A device for supplying a cylindrical pipe to a next step, which supports a large number of stacked cylindrical pipes so as to be lifted from below and one end of which is disengaged from a locking means. A pipe support member that is movably locked and the other end of which is fixed to the hoisting pulley of the hoisting means, and one end of which is arranged near the hoisting pulley and the other end of which is adjacent to the next step. A stock portion formed of inclined rails for stocking a predetermined number of the pipes, and a stock portion for preventing the landslide of a large number of pipes arranged above the hoisting pulley and supported by the pipe supporting member, one by one. And a prevention plate for supplying the same to the other end of the pipe support member by the winding means, so that the pipe support member is lifted. Pipe automatic supply apparatus characterized by several pipes is supplied to the stock portion one by one while being prevented landslides by preventing plate. 2. The plurality of pipes are loaded on a carrier truck in such a state that a gap is formed between the pipe and the floor surface, and the one end of the pipe supporting member is locked through the gap of the carrier truck. The pipe automatic supply device according to claim 1, wherein the pipe automatic supply device is locked by means. 3. The first and second shunters in which the one end side of the inclined rail is provided higher than the other end side, and the other end side is provided slightly wider than the width of one pipe. 3. A pipe automatic supply system according to claim 1 or 2, further comprising a feed means for arranging the members, and for vertically moving the shutter members individually to feed the pipes one by one to the next step. apparatus. 4. The automatic pipe supply device according to claim 1, wherein the winding means gradually winds the pipe support member while repeating rewinding and winding. 5. The winding means first rewinds for a first time, stops for a fixed time, then winds for a second time slightly longer than the first time, stops for a fixed time, and then again for the first time. The automatic pipe feeding device according to any one of claims 1 to 3, wherein the pipe support member is gradually rolled up by repeating control such as rewinding for a certain period of time.