JPH0430003Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial field of application) This invention is a material end detection device in a nailing device, specifically, a material end detecting device that is installed on a transfer path for transferring the material from one end to the other end. The present invention relates to a material edge detecting device that detects the starting end and the ending end of the material and provides a driving signal to a nailing device that drives a nail from the starting end to the ending end.

Note that in this specification, nails include not only ordinary nails but also pins, staples, and screws.

(Prior art and its problems) For example, a pillar material made of plywood is made of a material made by covering and bonding a synthetic resin sheet 31 with wood grain printed around a bonded plywood material 30, as shown in FIG. 4a. However, it is manufactured by automatically nailing both side edges of the sheet 31 to the bonding material 30 at a predetermined interval from the starting end and the ending end thereof. When detecting the edge of the material and giving a driving signal to the nailing device, conventionally, as shown in FIG.
One limit switch 34, 35 is provided before and after the nailing device 33 installed on the material 2, and a material edge detecting device is provided by connecting both switches 34, 35 in series. When the starting end passes the limit switch 34 and further passes the limit switch 35, a driving signal is turned on to the nail driving device 33, and the nail driving operation starts, and when the end of the material 2 passes the limit switch 34, , the above signal was turned off and the halting work was stopped. In addition, in order to stably feed the material to the transfer path, holding rollers 36, 36,
At least two or three 36 were provided.

However, the above-mentioned material edge detection device requires two limit switches and a separate restraining roller, making the device complicated and large in size.

(Technical Problems of the Invention) The present invention solves the above-mentioned drawbacks, and has a particularly simple structure to detect the start and end of the material, and to stably hold the material in a nailing device. The technical problem is to provide a part detection device.

(Means for Solving the Problems) In order to solve the above problems, a material end detection device in a nailing device according to the present invention is provided on a transfer path for transporting the material from one end to the other end. For a nailing device that drives and fastens a nail from a starting end to a terminal end of a material, a material end detecting device that detects the starting end and terminal end of the material and provides a driving signal, which is installed in parallel with the nailing device. a holding roller that holds down the material on the transfer path is pivotally supported approximately in the middle of a holding roller support member that is rotatably provided on the transfer path, and the nailing device is arranged in parallel to the side of the holding roller, A receiving means for receiving the starting end of the material is provided on the destination side of the holding roller of the holding roller support member, and a material detection switch is provided on the sending source side of the holding roller of the holding roller supporting member, and the material detection switch The actuator is arranged to protrude below the holding roller support member, and the holding roller support member is always biased so that the destination side approaches the transfer path and the source side moves away from the transfer path.

(Operations and effects of the invention) In the above configuration, when the material is sent from one side of the transfer path to the other, when passing the roller support member,
Since the support member is biased so that the source side moves away from the transfer path and the destination side approaches, the starting end of the material does not come into contact with the material detection switch on the source side and passes under it. It hits the holding roller and passes under it with its upper surface held down. When the material is further fed, the starting end of the material comes into contact with the receiving means because the destination side of the holding roller support member approaches the transfer path. As a result, the destination side of the holding roller support means is pushed up and rotated, and the source side approaches the transfer path side. Therefore, the actuator of the material detection switch is turned on when it hits the material, and a driving signal is sent to the nailing device. The nailing device is activated in response to the above signal and starts nailing work on the material. Since the nailing device is arranged side by side with the holding roller, there is no need to drive the nail forward of the starting end of the material.

Thereafter, when the material continues to be fed and the terminal end passes the material detection switch, the actuator of the material detection switch leaves the material, the driving signal is turned off, and the nailing operation of the nailing device is stopped. This automatically nails the material. Since the nailing device is arranged side by side with the holding roller, the nailing device does not drive the material backward from the terminal end.

Therefore, by adjusting the distance between the holding roller, the receiving means arranged at both ends thereof, and the material detection switch, it is possible to move the material from the starting and ending positions of the material that is continuously fed at intervals to a predetermined position. can be nailed down.

As described above, according to the present invention, only one material detection switch is required, and the end of the material can be detected with a simple structure. Further, since the material edge detecting device is provided with a holding roller, there is no need to provide a separate material holding device unlike the conventional method. Therefore, the entire device can be made compact. Therefore, the practical effects of the present invention are very large.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

In the figure, reference numeral 1 indicates a machine base. This machine stand 1 is provided with a transfer path 3 for loading and transferring the material 2, a nailing device 4 is provided on the transfer path 3, and further, the nailing device 4 has an end detection device for the material 2. 5 are arranged in parallel.

Material 2 is the same as in the previous example.

The transfer path 3 is constructed by stretching a band belt 7 around feed rollers 6, 6 provided on the machine base 1, and guide plates 8, 8 are provided before and after the belt belt 7.

The nailing device 4 has a nailing machine 10 attached to the tip of an air cylinder 9, and when the air cylinder 9 is operated, the injection port 11 is brought into contact with the material 2 on the transfer path 3, and the nailing machine 10 is operated to drive a nail. It is fixed via a bracket 15 to a support plate 14 of a column 13 whose vertical movement can be adjusted by a handle 12. A nail supply device 16 is integrally provided at the rear of the nail gun 10, and nails are supplied toward the nail injection port 11 from the nail supply device.

The edge detecting device 5 of the material 2 is connected to the nailing device 4 described above.
The device detects the starting end 2a and the ending end 2b of the material 2 and gives a driving signal to the support 13.
A support shaft 17 is provided on the support plate 14 so as to be movable up and down, and a press roller 19 for suppressing the material 2 on the transfer path 3 is provided approximately in the middle of a press roller support member 18 rotatably provided at the tip of the support shaft 17. In addition to being pivotally supported, an auxiliary roller 2 is provided on the destination side of the holding roller 19 of the holding roller support member 18.
0 is pivotally supported, and a material detection switch 21 is provided on the feed source side of the press roller support member 18 relative to the press roller 19, and furthermore, the press roller support member 18 is always connected so that the destination side approaches the transfer path 3, The base side is biased by a spring (not shown) so as to move away from the transfer path 3. The nailing device 4 is arranged side by side with the holding roller 19.

The actuator 21a of the material detection switch 21 is arranged so as to protrude from the holding roller support member 18 toward the transfer path 3 side.

Note that the auxiliary roller 20 is a means for receiving the starting end 2a of the material 2;
It does not necessarily have to be formed into a roller shape, as long as it abuts obliquely on the starting end of the roller.

Next, the operation mode of the nailing device 4 having the above configuration will be explained. First, the vertical positions of the nailing device 4 and the end detection device 5 of the material 2 are adjusted according to the thickness of the material 2. When the material 2 is sent from one side of the transfer path 3 (left side in Figure 1) to the other,
When passing through the holding roller support member 18, the holding roller supporting member 18 is biased so that the source side moves away from the transfer path 3 and the destination side approaches. The material does not come into contact with the material detection switch 21, but passes under it and hits the holding roller 19, with its upper surface held down. Then, when the material 2 is further fed, since the destination side of the holding roller support member 18 approaches the transfer path 3, the starting end of the material 2 comes into contact with the auxiliary roller 20 and pushes up the roller 20. As a result, the holding roller support member 18 rotates against the biasing force, and the feed source side approaches the transfer path 3 side, so the actuator 21a of the material detection switch 21 hits the material 2 and is pushed in. The detection switch 21 is turned on and a driving signal is sent to the nail driving device 4. The nailing device 4 operates upon receiving the above signal and starts nailing work on the material 2.

After that, when the feeding of the material 2 continues and the terminal end 2b passes the material detection switch 21, the actuating piece 21a of the material detection switch 21 separates from the material 2, so the terminal end of the material 2 is detected and the driving signal is turned off. Then, the nailing operation of the nailing device 4 is stopped. As a result, the material 2 is automatically nailed.

[Brief explanation of the drawing]

FIG. 1 is an overall schematic front view of a material edge detection device in a nailing device according to the present invention, FIG. 2 is a side view thereof, and FIG. 3 is an explanatory diagram of the operation mode of the material edge detection device, FIGS. 4a and 4b are explanatory diagrams of a conventional material edge detection device. Code, 1...Machine base, 2...Material, 2a...Starting end, 2b...Terminal end, 4...Nailing device, 5...
Material end detection device, 18... Holding roller support member, 19... Holding roller, 20... Auxiliary roller (receiving means), 21... Detection switch.

Claims (1)

[Scope of utility model registration request] A nailing device that is installed on a transfer path that transfers the material from one end to the other and drives a nail from the starting end to the ending end of the material, detects the starting end and the ending end of the material and drives the nail. In the material end detecting device that provides a signal, a holding roller that holds down the material on the transfer path is pivotally supported approximately in the middle of a holding roller support member that is arranged in parallel with the nailing device and rotatably provided on the transfer path. , the nailing device is arranged side by side on the side of the holding roller, and receiving means for receiving the starting end of the material is provided on the destination side of the holding roller of the holding roller supporting member, A material detection switch is provided closer to the feed source than the holding roller, and the actuator of the material detection switch is arranged to protrude below the holding roller support member. A material end detection device in a nailing device, characterized in that the material edge detection device is biased so that the side of the material is moved away from the transfer path.