JPH0333392B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a pipe sorting device that sorts and stores pipes such as temporary pipes used in construction work by length.

PRIOR TECHNOLOGY After the temporary pipes mentioned above are disassembled at the construction site, they are mixed up with long and short lengths and transported to a sorting place, where they are inspected and sorted for pipe crushing, deformation, adhesion of concrete, etc., and sorted by length. Measures are taken to collect them, bundle them, and transport them. Conventionally, this work has been done visually and manually by the operator, but it is extremely inefficient.To solve this problem, the present inventor first proposed a pipe sorting device that automatically sorts and collects the objects. (Japanese Patent Publication No. 14974-14974
issue).

Problems to be Solved by the Invention In order to attach a base plate or joint during temporary construction work, a pipe body with a pin a implanted at a position slightly deep from the end as shown in Figure 13a is used. It is transported mixed into normal pipes. In addition, as shown in FIG. 2b, some have clogging b made of concrete or the like. These have the disadvantage that visual identification is troublesome and they are mixed and accumulated in ordinary tubes.

In view of this, the present invention aims to store tubes that are sent in by dividing them by length, detect the presence or absence of the pins and detect clogging, and prevent them from being mixed into normal tubes. .

Means for Solving the Problems The present invention for achieving the above object will be described based on drawings corresponding to embodiments.

The tube sorting device 1 includes a receiving means 3 for receiving and arranging the tubes P fed from a supply mechanism 2, a positioning means 4 for pushing the ends of the tubes transferred from the receiving means and aligning them in a predetermined position, and a positioning means 4 for lengthening the tubes. It consists of a sorting/storage means 5 for sorting and storing each item. The positioning means 4 includes a pusher 23 that presses the end of the tube, and the pusher 23 pushes the end of the tube to a predetermined position, and this position is used as a length measurement reference position. This pusher 23 is equipped with a pin detection means 80 to be inserted into the bore of the tube, and this pin detection means 80 has a function of distinguishing between pins implanted in the tube and clogging caused by foreign matter.

Operation: The pusher 23 pushes the end of the pipe fed into the positioning means 4 to a predetermined position, and this position is used as a reference position for measuring the pipe length in the sorting and storing means 5. At the same time, a pin detection means 80 provided on the pusher 23 is inserted into the tube internal bore, and by detecting the presence or absence of pins and the presence or absence of clogging due to foreign matter, the presence or absence of these pins and the clogged tube are separated and stored. be able to.

Embodiment In the figure, a tube sorting device 1 includes a receiving means 3 for tubes P sequentially supplied from a supply mechanism 2 and a predetermined number of tubes P (three in the illustrated example) arranged in the receiving means 3 at the take-out end. It consists of a positioning means 4 that presses and aligns the tubular bodies in a predetermined position, and a sorting and storing means 5 that classifies and stores each tube P by size. The supply mechanism 2 is a pipe P
A roller conveyor 6 is provided to sequentially supply one by one.

The receiving means 3 includes a receiving roller conveyor 10 provided opposite to the supply roller conveyor 6, a picker 11 for scooping up the tubes P on the receiving roller conveyor 10, and a skid 12 for aligning the scooped tubes P. The skid 12 is formed by laying rails inclined at intervals, and the tube p rolls toward the positioning means 4 due to its own weight.

The receiving roller conveyor 10 has a pair of sensors 13 for detecting the pipe body P being sent.
a, 13b. The distance between the two sensors is set to the maximum pipe length to be accommodated, and when both sensors 13a and 13b operate together with a pipe of longer length that is mixed in and sent in, that is, one pipe, the distance is set to 1.
1 is not activated, and the tube is sent out and released as is.

The pusher 11 has an arm 15 attached to a drive shaft 14 that is rotated by a drive motor M1, and the rear end of the drive motor M1 is connected to the entrance side sensor 1.
It operates the moment it passes the front surface of 3a and scoops up the tube P. The supply roller conveyor 6 of the supply mechanism 2 is operated intermittently so that after the pipe P fed into the receiving means 3 is scooped up by the picker 11, the next pipe is fed. Further, the receiving roller conveyor 10 is set at a higher speed than the supply roller conveyor 6 to prevent the pipes from connecting together.

The positioning means 4 includes a supply mechanism 20 that feeds out the tubes P on the skid 12 one by one, a second skid 21 that aligns and places the tubes P to be fed out, and positions the tubes P on the skid 21 in a predetermined position. It includes a partition mechanism 22 that maintains the intervals, and a pusher 23 that presses the end portions of the tube bodies that are maintained at predetermined intervals. The supply mechanism 20 consists of a push-up table 24 on which the tube P transferred by its own weight from the skid 12 of the receiving means 3 is placed, and a cylinder 25 for raising and lowering the push-up table 24, and the upper surface of the push-up table 24 is provided with a guide plate as shown in the figure. 27 side, and when rising, the tube body P is moved to the second skid 21 side. The partition mechanism 22 is configured to hold a plurality of, for example, three, pipes at intervals on the second skid 21, and includes a first, second, and third locking member 3.
0, 31, 32. However, this number is determined to improve efficiency by processing a large number of tubes at the same time, and the number is determined arbitrarily.

The first locking member 30 is shown in FIGS. 2, 6, and 7.
As shown in the figure, attach the locking pawl 34 to the support shaft 33,
At normal times, the locking pawl 34 is projected above the skid 21 to lock the tube body P, and at the time of release, the locking pawl 34 is rotated by the rotating cylinder 35. In this case, an extrusion pawl 36 is attached to the locking pawl 34, and the extrusion pawl 36 is attached to the locking pawl 34.
6 to push out the tubular body P.

The second and third locking members 31 and 32 have the same structure, and the second locking member 31 will be explained. As is clear from FIG. 5, this second locking member 31 supports a locking claw 38 on a swing shaft 37, and fixes the locking claw 38 by moving the swing shaft 37 back and forth by a swing cylinder 39a. It rotates around the shaft 40, and the tube P
to lock or release. In FIG. 1, 39b is a swing cylinder of the third locking member 32. Also 4
1a, 41b, 41c are respective locking members 3
This is a sensor that detects the presence or absence of the tube body P held at 0, 31, and 32.

The pusher 23 is designed to press the rear ends of the three tubes P supported by the respective locking members 30, 31, and 32 to a predetermined position. , is provided with a pressing cylinder 43 that moves this contact plate 42 forward and backward. Reference numeral 44 denotes a guide bar provided on a mounting base 45 to which the plate 42 is attached.

As will be described later, the end position of the extrusion of the tube by the contact plate 42 is a measurement reference position for the tube length measuring means 73 provided in the sorting and storage means 5, and the ends of the tubes supplied are irregular. For this reason, it is preferable that the transition distance of the contact plate 42 is considerably long, so that each of the above-mentioned locking members 3
0, 31, 32 end locking members 30a, 31a,
32a is configured to allow movement of the abutment plate 42.

As shown in FIGS. 9 and 10, the first end locking member 30a includes a tube locking member rotating claw 50, a guide plate 51, and an abutment plate 52 facing the guide plate 51.
The guide plate 51 is attached to the mounting base 45 of the pressing cylinder 43, and the rotating claw 50 and the abutting plate 52
are connected to each other by a support shaft 53, and the abutting plate 52 is provided with an abutting roller 54 that abuts against the guide plate 51.
The guide plate 51 has a clearance surface 5 for the contact roller 54.
5a and a pressing surface 55b are formed, and the contact roller 54 is not normally in contact with the guide plate 51, but the rotating claw 5
0 locks the tube body P, but when the pusher 23 is operated, the abutting plate 52 and the rotating pawl 50 rotate as the guide plate 51 moves forward (as shown by the chain line in FIG. 10), preventing the abutting plate 42 from moving forward. At the same time, while the contact plate 42 is moving forward, the rotating claw 50 is pressed by the pressing surface 55b of the guide plate 51.
hold in a rotated position. Even if the tubular body P is disengaged from the rotary claw 50, it is supported by the insertion tube 81 attached to the contact plate 42, as will be described later, and therefore does not move. As shown in FIGS. 5, 6, and 8, the second end locking member 31a is attached to the swing shaft 3.
The base plate 56 and the rotating arm 58 are connected by a spring 59. , a receiving plate 60 for attaching the rotating arm 58 to the base plate 56 by the spring 59;
The base plate 56 and the rotating arm 58 are maintained substantially in a straight line. This rotating arm 58 is pressed and rotated by the advancement of the abutment plate 42 of the pusher 23, and as the spring 59 passes over the support shaft 57, the rotating arm 58 rotates toward the support base 61 and presses against the support base. It is supported and allows the back and forth movement of the contact plate 42. This pivoting arm 58 moves the pivoting shaft 37 to the position indicated by the chain line in FIG.
9 moves back over the support shaft 57, and along with this, the rotating arm 58 returns to the position in line with the base plate 56. As shown in FIGS. 1 and 2, the sorting storage means 5 is
A supply member 70 that supplies the pipes P sent in from the positioning means 4 one by one, a chain conveyor 71 that receives and raises the pipes P supplied from the supply member 70, and a large number of pipes disposed opposite to the chain conveyor 71. Racks 72, 72... and pipe length measuring means 73
Equipped with. The supply member 70 includes a push-up table 74, a crank mechanism 75 that rotates in synchronization with the chain conveyor 71 to raise and lower the push-up table, and a pedestal 76 that supports the pushed-up tube P and delivers it to the chain conveyor 71.
It becomes more. A tube support bracket 77 is attached to the chain conveyor 71, and a push-out mechanism 78 for selecting the tube P conveyed by the chain conveyor 71 and pushing it into the rack 72 is provided opposite to the rack 72. The tube length measuring means 73 is made up of sensors 73a, 73b, 73c, etc., which are respectively arranged at positions corresponding to the lengths to be divided in advance, with the end of the tube pushed out by the pusher 23 as a reference. That is, if the length is detected by the sensor 73b but does not reach the sensor 73c, the length corresponds to the sensor 73b, and an activation signal is given to the push-out mechanism 78 for the rack in which it is stored. As shown in Figure 13a, the pipes to be stored include a pipe Pa to which pins a are attached for attaching a base plate or joint during assembly, and as shown in Fig. 13b, there is cement, etc. There is also a pipe body Pb that has clogging b. The present invention detects this and distinguishes it from a normal pipe.
is equipped with pin detection means 80. This pin detection means 80 includes an insertion tube 81 inserted into the tube body, and a metal detection sensor 82 attached to the tip of the insertion tube. The insertion tube 81 is slidably inserted into the contact plate 42 and the mounting base 45, and the pusher support base 8
3 is provided with a stopper 84 facing the insertion tube 81.

In the above configuration, supplied from the supply mechanism 2,
Pipe body P moving on receiving roller conveyor 10
This is detected by the inlet sensor 13a, and immediately after the end of the tube passes through the sensor 13a, the picker 11 is activated to scoop up the tube P and send it to the skid 12.
Move up. However, if a tubular body of an abnormal length is mixed in and the tip reaches the outlet side sensor 13b before the end of the tubular body passes the inlet side sensor 13a,
The picker 11 does not operate, and the tube is sent out as it is, and the roller conveyor 6 is stopped for a period of time until the end of the abnormally long tube passes the exit side sensor 13b. The tube on the skid 12 is pushed up by the push-up table 2 one by one due to its own weight.
4, and is transferred onto the second skid 21 by the push-up table 24. In this case, the first locking member 3
The locking pawl 34 of No. 0 projects to the locking position, but the locking pawls 38, 38 of the second and third locking members 31, 32 are in the retracted position. When one tube body is supported by the first locking member 30, the sensor 41a detects this and moves the second locking member 31 to the locking position, and at the same time, the push-up table 24 moves the next tube body. supply,
It is supported by the second locking member 31. Next, the third tube body is supported by the third locking member 32 using the same means. When the tube body is supported by the third locking member 32, the sensor 41c detects this and operates the pusher 23. The pusher 23 advances the contact plate 42 to align the rear ends of the three pipe bodies, and moves to a predetermined position, that is, the measurement reference position A for the pipe length measuring means 73. At the same time, the insertion tube 81 of the pin detection means 80 is inserted into each tube internal bore.

In this case, the insertion tube 81 is inserted as is into a tube body that does not have a pin a, but as shown in FIG. , mounting plate 42, mounting base 45
pushed against. Along with this, metal detection sensor 8
2 detects pin a. In addition, for a tube Pb whose inner tube hole is clogged with foreign matter b,
As shown in , the insertion tube 81 is similarly pushed into the contact plate 42 etc., but in this case the metal detection sensor 82 is not activated.

With these, the presence or absence of pin a or clogging b is controlled by the amount of insertion tube 81 in and out (not shown).
is memorized.

Next, the contact plate 42 is moved back. At this time, the insertion tube 8
When 1 is pushed in by pin a etc., the 1st
As shown in FIG. 1, the insertion tube 81 is pushed out by the stopper 84 and returns to the initial waiting position in which it protrudes a predetermined amount from the contact plate 42. As the pusher 23 completes its retreat, each of the locking members 30, 31, and 32 moves to the retracted position, and the three tubes move toward the sorting storage means 5, and are delivered to the chain conveyor 71 one by one by the supply member 70. It is delivered. This chain conveyor 71
During the ascent by the pipe length measuring means 73
The length is detected by , and a detection signal is applied to the control mechanism. The control mechanism determines the rack to be stored based on the presence or absence of the pin or clogging and the length of the pipe, and when the pipe reaches the expected rack position,
The corresponding extrusion mechanism 78 is actuated to transfer the tube onto the rack 72.

Effects of the Invention As described above, according to the present invention, one end of irregular length pipes of different lengths that are sequentially fed is pushed to a predetermined position by a pusher, and this position is used as a length measurement reference position, so that the pipe length can be reliably measured. In addition, since the pusher is designed to detect whether or not the pin installed in the tube body is clogged with foreign matter, the tube body stored in the rack will not be clogged with the tube body with the pin or foreign matter. This has the advantage that clogged pipes can be sorted and stored separately in each rack without being mixed in.

[Brief explanation of the drawing]

Fig. 1 is an overall plan view, Fig. 2 is a sectional view taken along the line X-X in Fig. 1, Figs.
5 to 10 relate to the positioning means, and FIG. 5 is a front view,
FIG. 6 is a left side view thereof, FIG. 7 is an explanatory diagram of the first locking member, FIG. 8 is an explanatory diagram of the operation of the second end locking member, and FIG. 9 is an explanatory diagram of the first end locking member. Plan, 10th
11 is a longitudinal sectional view of the pin detection means, FIG. 12 is an explanatory diagram of the operation of the pin detection means, FIG. 13a is a tube body equipped with a pin, and FIG. It is an explanatory diagram of each body. 1 is a tube sorting device, 2 is a supply mechanism, 3 is a receiving means, 4 is a positioning means, 5 is a sorting storage means,
23 is a pusher, 80 is a pin detection means, A is a length measurement reference position, and P is a tube body.

Claims (1)

[Claims] 1. A receiving means for receiving and arranging the tubes sent from the tube supply mechanism, a positioning means for pressing the ends of the tubes transferred from the receiving means to align them in a predetermined position, and a means for dividing the tubes by length. The positioning means includes a pusher that presses the end of the tube, and the pusher presses and moves the end of the tube to a predetermined length measurement reference position. A tube sorting device comprising a pin detecting means inserted into a tube internal bore, the pin detecting means having a function of distinguishing between pins implanted in the tube and clogging caused by foreign matter.