JPH0325926Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a device for securing plates such as footboards of construction scaffolding, and more particularly to a device for securing straps attached to the ends of plates such as footboards in scaffolding at construction sites.

Generally, footboards are installed on scaffolding at construction sites, and since workers stand on these footboards during work, strength and safety are required. For this reason, usually the footboard has a double structure, and a band is wrapped around both ends of the double footboard and nailed from both the front and back sides. Conventionally, this nailing was done by hand; first, the two treads were overlapped, a band was wrapped around both ends, a part of the tread was temporarily fastened by hand, and then a nailer was used to do the nailing. They were nailed together at regular intervals. however,
Nailing the straps like this has to be done on both ends of the footboard and on the front and back, which is very time-consuming. As a solution to this problem, it is possible to arrange and fix as many nailers as the number of nails to be driven in one row and drive a large number of nails into the strap at the same time, but the nailer itself is Because it was too large, the nail driving pitch was too wide to give the board the required strength, and changing the nail pitch was not easy. Therefore, there has been a desire for efficient automation of the work of nailing straps.

The present invention was developed in view of the above circumstances, and the purpose is to propose a plate fastening device that can automatically and easily nail a band to a board such as a footboard in a particularly easy and reliable manner. do.

Embodiments of the present invention will be described below with reference to the drawings.

In the figure, numeral 1 is a nailing stand, and nailing stand 1
A nailing machine holding frame 2 is erected above, and a pair of nailing machines 3, 3 connected to each other via a chain belt 5 are connected to both sides 2a of the holding frame 2, respectively. They are arranged opposite to each other so as to be movable up and down in synchronization with the opposite direction. A detection means (not shown) is provided along the vertical movement path of one of the nailing machines 3 to provide a signal for driving operation of the nailing machine 3. In addition, the above nailing machine holding frame 2
A plate material supply path 4 in which a large number of rollers 11 are arranged in parallel is provided at the rear of the nail driving table 1 and in front (not shown) of the nail driving platform 1, facing between the nailing machines 3 and 3 which are arranged opposite to each other. A double plate material 7 with a band 6 temporarily attached to both ends is sent. Furthermore, the plate material supply path 4
Detection means (not shown) is provided for detecting the position of the band 6 of the plate material 7 that is fed along.
As a result, after detecting the position of the front strap 6 of the plate material 7 and stopping the plate material 7, the nailers 3, 3 are advanced to the nailing position, and the uppermost part of the front and back surfaces of the plate material 7 and At the same time, the strap 6 is nailed to the lowest part. After nailing, the nailers 3, 3 move backward again. Next, when the chain belt 5 is moved in one direction, one nailer 3 moves upward and the other nailer 3 moves downward to detect the next nailing position of the strap 6. Then, upon receiving an activation signal from the nailing machine 3, nailing is performed in the same manner, and subsequent nailing operations are performed in the same manner. Front strap 6
After completing the nailing work, move the plate 7 forward again, detect the position of the rear strap 6, stop the plate 7, and nail the rear strap 6 in the same way as the front strap 6. do.

Therefore, next, the above-mentioned strap fastening device will be explained in more detail.

First, a plate supply path 4 in which a number of rollers 11 are arranged in parallel is provided at the rear and in front (not shown) of the nailing table 1, and a vertical splint 12 is provided on one side of the supply path 4. The plate materials 7 are stacked in double layers and with the bands 6, 6 temporarily fastened to both ends, and are fed horizontally on the plate material supply path 4 and upright with one side abutting the splint 12. Therefore, the bands 6, 6 are positioned vertically at both ends of the plate 7 and supplied to the nailing table 1. Note that the plate material 7 may be fed manually, but automatic feeding such as a belt conveyor is preferable.

Next, a strap detection means (not shown) such as a metal sensor for detecting the position of the strap 6 of the plate material 7 sent through the plate material supply path 4 is placed at an appropriate position on the movement path of the plate material 7. It is provided. The above detection means is
The position of the strap 6 is detected and movement stopping means such as a stopper (not shown) is activated to stop the board 7 at a predetermined position on the nailing platform 1, whereby the strap 6 is removed by the nailing machines 3, 3. The nailing is prepared.

Next, a plate material fixing device 9 is provided facing the plate material supply path 4 at the intermediate portion of the two nailers 3, 3 on the upper part of the nailer holding frame 2. This plate material fixing device 9 is provided with a telescopic U-shaped presser portion 18 at the tip of a cylinder device 17 that moves in the vertical direction, and the presser portion 18 is formed downward.
This is to fix the upper end of the plate material 7 that has been supplied onto the plate material supply path 4 and stopped so as not to move. The plate fixing device 9 is electrically connected to the strap detecting means, and when the strap detecting means detects the strap 6 and stops the movement of the plate 7, the cylinder device 17
After a predetermined number of nails are driven into the band 6, the cylinder device 17 is operated in the opposite direction to release the fixation of the plate 7.

The band 6 of the board 7 fixed by the board fixing device 9 is nailed by nailers 3, 3. Nailers 3, 3 are movably held by a nailer holding frame 2 erected on a nailer stand 1. That is, rotating gears 13, 13 are provided on both sides of the upper end of the nailer holding frame 2, and the gears 13, 1
A chain belt 5 is hung on the chain belt 3, and nailer mounting members 8, 8 are suspended from both side hanging parts of the chain belt 5, and holding rods 14, 14 is fitted. The nailer 3,
3 are attached so as to be slidable in the left-right direction, and the respective injection ports 3a, 3a are arranged to face each other with the plate material supply path 4 in between.

The chain belt 5 is driven in forward and reverse directions by a drive device (not shown), and in synchronization with this, the nailer mounting members 8, 8 and the nailers 3, 3 also move up and down. At this time, if one nailing machine 3 moves upward, the other nailing machine 3 moves downward in the opposite direction in synchronization with this. The chain belt drive device operates after the first stage nail is driven into the board 7.

Note that the connecting means between the nailers 3, 3 may be other than a chain, such as a belt or the like.

Moreover, it is not limited to a pair of nailers.
The number of nailers may be more than a certain number as long as the same number of nailers are arranged facing each other on both sides.

Cylinder devices 15, 15 are provided at the rear end portions of the nailing machines 3, 3, and the cylinder devices 15,
15, both nailing machines 3, 3 simultaneously slide in the left and right direction and move forward and backward. The cylinder devices 15, 15 are electrically connected to the strap detecting means, which detects the strap 6 of the plate material 7 on the plate material supply path 4, and drives the plate material 7 into a predetermined nailing position. It operates upon receiving the signal when stopped at a certain position.
Both nailers 3, 3, which were in the retreat position, are moved forward, and the contact arms provided at the tips of the injection ports 3a, 3a are brought into contact with the band 6 to drive the nailers 3, 3, and then the cylinder The devices 15, 15 are arranged to operate in opposite directions to retract both nailers 3, 3 at the same time.

Furthermore, after driving the first stage of nails into the band 6, the nail driver 3 drives a predetermined number of nails 10 from the next stage onto the band 6 at a predetermined interval while moving up and down. Driven. This is accomplished by the following nailer movement control mechanism.

That is, a plurality of dogs 16, 16, . Suitably configured detection means (not shown) are provided for providing a signal for the driving operation of the machine 3. When the nailer 3 moves up and down, the nailer mount comes into contact with the dogs 16, 16..., and this contact is detected and the vertical movement of the nailer mount is stopped, and the nailer A driving operation signal is given to the cylinder device 15, and based on this signal, the cylinder device 15,
15 is activated, the nailing machines 3, 3, which were in the retracted position, move forward, and the contact arms provided at the tips of the injection ports 3a, 3a come into contact with the band 6. As described above, the means for detecting the positions of the nailers 3, 3 and operating the cylinder devices 15, 15 uses, for example, a limit switch and a solenoid valve, so that the mounting member 8 of the nailer 3 is connected to the dog 16, The limit switch closes when the tip of the nail gun 16 is reached, and the electric signal opens the solenoid valve to send driving air to the cylinder devices 15, 15 to move the nailer 3 forward. One possibility is to use oil-based fluid control.

Note that the pair of nailing machines 3, 3 arranged oppositely on the nailing table 1 are operated by the cooperation of the pulling operation of the trigger and the contact of the contact arm with the material, as in a normal nailing machine. However, in this case, the trigger should be in a pulled state in advance. As a result, the nail gun 3 operates at the same time that the contact arm contacts the band 6, so that so-called contact driving can be performed.

Next, the operation of the strap fastening device having the above configuration will be explained.

First, the plate material 7 supplied along the plate material supply path 4
When the strap 6 temporarily fastened to the front part of the plate 7 is detected by the strap detection means, a movement stopping means (not shown) is activated based on the electric signal given by the detection means, and the plate 7 is moved. It is stopped at a predetermined nail driving position, and at the same time, the fixing device 9 is driven, and the holding part 1 is driven.
8, it is fixed immovably. Further, in response to the signal from the detection means, a nail driving operation signal is given to the nailing machines 3, 3, and based on this signal, the cylinder devices 15, 15 are activated, and the plate material 7 is sandwiched between the left and right sides. Nailers 3 placed opposite each other move forward, contact and drive the band 6 of the plate material 7, and at the same time drive the first stage of nails.

Next, after the first stage of nail driving, the cylinder devices 15, 15 are operated to move the nailers 3, 3 backward, and the chain drive device is activated, so that the nailer mounts 8, 8 are moved in opposite directions. It moves up and down. At this time, one of the nailing machines 3 rises, and in synchronization with this, the other nailing machine 3 descends. The above nailer mounting stand 8,
When the nail gun 8 comes into contact with the dogs 16, 16, . At the same time, a driving operation signal is transmitted to the nailing machines 3, 3, and based on this signal, the above 1.
5 and 15 are activated, the nailing machine 3 which was in the retracted position moves forward, and the second stage nail is driven into the band 6 again in the same manner as described above. After the nail driving is completed, the nail driver 3
is moved backward, further moved up and down to drive the third stage of nails, and the same operation is repeated thereafter to perform the work of nailing the band 6.

When a predetermined number of nails are driven into the front band 6 of the board 7 and nailing is completed, the nailers 3, 3 move backward, the action of the board fixing device 9 is released, and the board 7 moves further forward. . At this time, the nailer 3 does not return to the initial position but remains at that position, and when the plate 7 moves forward and the position of the rear strap 6 is detected, the plate 7 stops moving again, and the same procedure as described above is performed. The nail driving work is done automatically. In this case, the vertical movement of the nailer 3 is performed in the opposite manner to that described above.

As explained in detail above, according to the plate fastening device according to the present invention, nails can be driven from both sides of the plate simultaneously using a plurality of nailers, so construction can be carried out quickly. In addition, the left and right nailing machines are connected by a connecting means such as a chain belt and are suspended from both the left and right sides to move up and down, so that the left and right weights are balanced and require less driving force. Furthermore, since a detection means for giving a nail driving signal is provided on the path of movement of the nailer, nailing can be performed both when the nailer is moving upwards and when it is moving downwards, and therefore it is possible to drive nails in one band. There is no need to return the nailer to the initial position after nailing gold.
It has good operating efficiency and can drive nails quickly. Furthermore, since the nailing position corresponds to the position of the detection means, the nailing position can be easily changed by changing the position of the detection means, and the nailing interval can also be freely set. , it is also possible to set minute intervals.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a device for fastening plates such as construction scaffolding boards according to the present invention, and FIG. 2 is an explanatory diagram of a moving state of a nailer in the device. Code 1... Nailing stand, 2... Nailing machine holding frame, 3... Nailing machine, 4... Board supply path, 5... Chain belt, 6... Banding, 7... Board material, 8... …
Nailer mounting member, 9...Plate fixing device, 15...
Cylinder device, 16...dog.

Claims (1)

[Scope of utility model registration request] A strap detection means is provided in the supply path of the plate material to which the strap is temporarily fixed in the vertical direction, and the strap detection means temporarily stops the supply of the plate material on the supply path, while the plate material supply path is sandwiched between the straps and the plate material supply path. Nailers connected by a connecting means such as a chain belt are arranged facing each other, and these nailers are synchronously moved in vertically opposite directions along a movement path corresponding to the band of the stop plate material. Further, a detecting means is provided along at least one of the nailing machine movement paths to detect the driving position of the nailing machine and to give a driving signal to the nailing machine, and the detecting means detects the driving position of the nailing machine along at least one of the nailing machine movement paths, and provides a driving signal to the nailing machine. A strap fastening device for plate materials such as footboards of construction scaffolding, characterized in that the strap is nailed at the same time.