JPH0736246Y2 - Plate material abutment sensor for clamp device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a plate material abutting sensor for a clamp device for confirming a clamp state of a clamp device in a plate material processing machine such as a turret punch press. .

(Prior Art) Briefly describing a plate material contact sensor for a conventional clamp device, a square pipe-shaped sensor holder is provided in a part of the clamp device, and an end surface of the plate material is provided on one end side of the sensor holder. A plate member abutting member capable of abutting is provided. In order to make this plate member abutting member movable in the longitudinal direction of the sensor holder, the plate member abutting member has a slidable rectangular column-shaped slide portion on the inner side surface on one end side of the sensor holder. .

The plate contact member is integrally provided with a first contact, and the first contact is configured to be located inside the sensor holder. In addition, a second side which is electrically contactable with the first contact is provided on one side of the first contact in the sensor holder.
The contacts are fixed via an insulator. In the normal state, the first contact is in electrical contact with the second contact due to the bias of the spring. Then, in order to detect that the electrical contact state between the first contact and the second contact is released,
One end of a lead wire is connected to the second contact. The other end of this lead wire is projected to the outside of the sensor holder through appropriate means.

Therefore, the plate material is moved relatively to the clamp device side, and the end surface of the plate material is abutted against the plate material abutting member. As a result, the plate abutting member moves in the other direction against the biasing force of the spring, and the electrical contact state between the first contact and the second contact is released. When this electrical contact state is released, it is detected that the end surface of the plate member has abutted against the plate member abutting member,
It is confirmed that the clamp has been performed. Here, the fact that the electrical contact state between the first contact and the second contact has been released can be taken out to the outside of the sensor holder by a lead wire as a detection signal.

After it is confirmed that the plate material has been clamped, the end surface of the plate material is in a state of abutting against the plate material abutting member by the urging force of the spring, and under this condition, the clamp device is moved in an appropriate direction, Is moved and positioned with respect to the plate material processing unit, and the plate material processing unit performs desired plate material processing on the plate material.

(Problems to be solved by the invention) By the way, since the plate material is processed under the condition that the end surface of the plate material abuts against the plate material abutting member, the impact caused by the plate material processing causes the plate material abutting member via the plate material. , It may extend to the sensor holder.

On the other hand, the sensor holder in the conventional plate material abutting sensor is formed in the shape of a square pipe, and the slide portion of the plate material abutting member is formed in the shape of a square pole, and the four sliding surfaces of the slide portion correspond to the sensor holder. As described above, when the impact caused by the plate material processing reaches the plate material abutting member and the sensor holder through the plate material as described above, the sliding portion and the sensor holder in the plate material abutting member are slidable. There is a problem in that galling is likely to occur and the slide portion of the plate material abutting portion cannot maintain a smooth slidable state with respect to the sensor holder, which causes a malfunction of the plate material abutting sensor.

(Structure of the Invention) (Means for Solving the Problem) In order to solve the conventional problems as described above, in the present invention, in order to confirm the clamp by the clamp device, it is necessary to confirm that the end surface of the plate material hits. In the plate material abutting sensor for detecting the clamp device, a cylindrical sensor holder is provided in a part of the clamp device, and a plate material abutting member capable of abutting the end surface of the plate material is provided on one end side of the sensor holder, In order to make this plate member abutting member movable in the longitudinal direction of the sensor holder, the plate member abutting member has a slidable cylindrical slide portion on the inner side surface at one end side of the sensor holder. A seal member is fitted to the other end of the sensor holder, and a minute gap is formed between the inner surface of the other end of the sensor holder and the seal member, so that the first contact point is integrated with the plate member abutting member. The first contact is provided inside the sensor holder, and a second contact electrically contactable with the first contact is provided on one side of the first contact in the sensor holder. And a biasing member that biases the plate member abutting member in one direction in the sensor holder so that the first contact electrically contacts the second contact under normal conditions. In order to detect that the electrical contact state between the first contact and the second contact has been released, one end of a lead wire is connected to the second contact, and the other end of the lead wire is connected to the minute gap. It is characterized in that it is configured so as to project to the outside of the sensor holder via the.

(Operation) In the above configuration, the plate material is relatively moved to the clamp device side, and the end surface of the plate material is abutted against the plate material abutting member. As a result, the plate member abutting member moves in multiple directions against the urging force of the urging member, and the electrical contact state between the first contact and the second contact is released. When this electrical contact state is released, it is detected that the end surface of the plate member has abutted against the plate member abutting member, and it is confirmed that the plate device has been clamped. Here, the fact that the electrical contact state between the first contact and the second contact has been released can be taken out to the outside of the sensor holder by a lead wire as a detection signal.

After it is confirmed that the plate has been clamped, the end surface of the plate member is in a state of abutting against the plate member abutting member by the urging force of the urging member, and by moving the clamp device in an appropriate direction under this state, The plate material is moved and positioned with respect to the plate material processing unit, and a desired plate material processing is performed on the plate material in the plate material processing unit.

(Embodiment) Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. Each of the drawings shows the present embodiment, and as shown in FIG. 5, the laminated plate W at the position A on the table 3 is moved to the processing position B of the plate material processing apparatus 1 such as a turret punch press.
The product processed by the plate material processing device 1 is supplied to the position A of the plate material loading / unloading device 5. This loading / unloading device 5 uses the link mechanism to move the uppermost one of the laminated plates W to the frame 7
The sheet material abutment sensor provided on the clamp 11 of the sheet material processing apparatus 1 which is picked up by the suction member 9 provided in
In Fig. 13, it is detected that the plate material hits and hits securely.

As shown in FIG. 1, FIG. 2, FIG. 3, and FIG. 4, the plate contact sensor 13 has a cylindrical sensor holder 15 and a cylindrical slide portion 17S, and Abutment member 17 that can slide smoothly and center holder
A long screw 19 which is inserted into 15 and which is screwed into abutting member 17 and which has a first contact (the head of the long screw), and a conducting screw which is screwed into sensor holder 15 via insulator 21 ( The second contact point) 23 and the biasing member 25 which is a spring provided in the center holder 15 in this embodiment. Further, the plate material abutment sensor 13 is attached to the clamp 11 provided in the plate material processing apparatus 1 by the attachment holes 27 and 29, and the lead wire 31 having one end connected to the conducting screw 23 leads the detection signal to the outside. Further, 33 is a dustproof packing (sealing member) provided in the sensor holder 15. Further, the sensor holder 15 is configured in a cylindrical shape having an inner side surface (inner peripheral surface) inside as shown in FIGS.
The exterior of 15 is square shaped.

With such a configuration, the plate material impact sensor 13
Is formed in a cylindrical shape from the front and rear of the sensor holder 15, and the spring 25 and the slide portion 17S of the abutting member 17 are provided on the front side.
Is inserted. The insulator 21 and the conducting screw 23 are inserted from the rear side, the insulator 21 is fixed in the center holder 15 by a set screw (not shown), and further the long screw 19 is inserted and screwed into the abutting member 17. At this time, with the sensor holder 15 attached to the clamp 11, the abutting member 17 is adjusted and attached so as to protrude from the reference surface of the clamp 11 by about 0.3 to 0.5 mm.

Therefore, the abutting member 17 is pushed by the plate material, the first contact of the long screw 19 and the conduction screw (second contact) 23 are separated, and the mutual conduction is broken, and this signal is passed through the lead wire 31. Is transmitted to the control device. Usually, long screw 19 and conduction screw
25 is in contact with and always maintains a conductive state.

As described above, in the plate material abutment sensor for the clamp device according to the present embodiment, the cylindrical sensor holder 15 is provided in a part of the clamp device, and the end surface of the plate material can abut against one end side of the sensor holder 15. The plate member abutting member 17 is provided, and the plate member abutting member 17
In order to freely move the sensor holder 15 in the longitudinal direction of the sensor holder 15, the plate member abutting member 17 has a slidable cylindrical slide portion 17S on the inner side surface at one end side of the sensor holder 15, and the sensor holder 15 The seal member 33 is fitted into the other end of the sensor holder 15, and a minute gap (see FIG. 3) is formed between the inner surface of the other end of the sensor holder 15 and the seal member 23. The first contact (the head of the long screw 19) is integrally provided, and the first contact is used as the sensor holder.
A second contact (conduction screw 23) which is configured to be positioned inside the sensor holder 15 and which can be electrically contacted with the first contact on one side of the first contact in the sensor holder 15 via an insulator 21. A biasing member 25 for biasing the plate abutting member 17 in one direction is provided in the sensor holder 15 so that the first contact electrically contacts the second contact 23 under normal conditions. Provided,
In order to detect that the electrical contact state between the first contact point and the second contact point 23 is released, the lead wire 31 is connected to the second contact point 23.
One end of the lead wire 31 is connected and the other end of the lead wire 31 is projected to the outside of the sensor holder 15 through the minute gap.

Therefore, the plate material is moved relative to the clamp device side, and the end surface of the plate material is abutted relative to the plate material abutting member 17. As a result, the plate abutting member 17 moves in the other direction against the urging force of the urging member 25, and the electrical contact state between the first contact point and the second contact point 23 is released. When this electrical contact state is released, it is detected that the end surface of the plate member has abutted against the plate member abutting member 17, and it is confirmed that the clamp device has performed clamping. Here, the fact that the electrical contact state between the first contact point 2 and the second contact point 23 is released can be taken out of the sensor holder 15 as a detection signal by the lead wire 31.

After it is confirmed that the plate has been clamped, the end face of the plate member is in a state of abutting against the plate member abutting member 17 by the urging force of the urging member 25, and under this condition, the clamp device can be moved in an appropriate direction. Thus, the plate material is moved and positioned with respect to the plate material processing portion, and the plate material processing portion performs desired plate material processing on the plate material.

According to the present embodiment as described above, the sensor holder 15 in the plate material abutting sensor is formed into a cylindrical shape, and the plate material abutting member 17 is provided.
Since the sliding part 17S of is configured in a cylindrical shape, one sliding surface (outer surface) of the sliding part 17S can slide on one sliding surface (inner surface) of the sensor holder 15. Therefore, even if the impact caused by the plate material processing reaches the plate material abutting member 17 and the sensor holder 15 through the plate material, the plate material abutting member
By slightly rotating 17 with respect to the sensor holder 15, the above impact is absorbed, and it is possible to suppress the galling of the slide part 17S and the sensor holder 15 of the plate abutting member 17 as much as possible. For this reason, the slide portion 17S of the plate material abutting member 17 maintains a smooth slidable state with respect to the sensor holder 15, and the plate material abutting sensor can maintain stable operation.

Further, the plate member abutting member 17 is a cylindrical slide portion 17 that is slidable on the inner surface of the cylindrical sensor holder 15 at one end side.
S has a seal member 33 on the other end side of the sensor holder 15
By fitting in, the inside of the sensor holder 15 can be maintained in a substantially sealed state, and contact failure of the first and second contacts 23 due to dust or the like can be avoided as much as possible.

(Effects of the Invention) As will be understood from the above description of the embodiments, according to the present invention, the sensor holder in the plate material abutting sensor is formed in a cylindrical shape, and the slide portion of the plate material abutting member is formed in a cylindrical shape. Since it is configured, one sliding surface (outer surface) of the sliding part is slidable with respect to one sliding surface (inner surface) of the sensor holder. Therefore, even if the impact due to the plate material processing reaches the plate material abutting member and the sensor holder through the plate material, the impact is absorbed by the plate material abutting member slightly rotating with respect to the sensor holder, and the plate material abutting member. It is possible to suppress the galling of the slide part and the sensor holder in. Therefore, the sliding portion of the plate member abutting member can maintain a smooth slidable state with respect to the sensor holder, and the plate member abutting sensor can maintain a stable operation.

Further, the plate member abutting member has a slidable cylindrical slide portion on the inner side surface on one end side of the cylindrical sensor holder, and the seal member is fitted on the other end side of the sensor holder so that the sensor holder The inside can be kept almost sealed, and contact failure of the first and second contacts due to dust or the like can be avoided as much as possible.

[Brief description of drawings]

FIG. 1 is a front sectional view of a schematic configuration diagram of an embodiment of a hermetically sealed plate material abutting sensor according to the present invention, and FIG. 2 is a left side view thereof.
FIG. 3 is a view taken in the direction of arrow III in FIG. 1, FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. 1, and FIG. 5 is a plate material processing apparatus shown in FIG. It is a schematic block diagram of a board material loading / unloading apparatus. 1 ... Plate material processing device 7 ... Plate material loading / unloading device 11 ... Clamp 13 ... Sealed plate material abutting sensor 15 ... Sensor holder 17 ... Abutting member 19 ... Long screw 23 ... Conductive screw 25 ... spring

Claims (1)

[Scope of utility model registration request] 1. A plate material abutting sensor for a clamp device for detecting that an end face of a plate material has abutted in order to confirm the clamp by the clamp device, wherein a cylindrical sensor holder is provided in a part of the clamp device. , A plate member abutting member capable of abutting the end face of the plate member is provided on one end side of the sensor holder, and the plate member abutting member is configured to be movable in the longitudinal direction of the sensor holder. Has a slidable cylindrical slide portion on the inner side surface on one end side of the sensor holder, and a seal member is fitted on the other end side of the sensor holder, and the inner side surface on the other end side of the sensor holder is placed between the seal member and A small gap is formed in the plate member, a first contact is integrally provided on the plate member abutting member, and the first contact is located in the sensor holder. A second contact, which can be electrically contacted with the first contact, is fixed to one side of the first contact through an insulator, and the first contact electrically contacts the second contact under normal conditions. In order to detect the electric contact between the first contact point and the second contact point, a biasing member that biases the plate member abutting member in one direction is provided in the sensor holder. A plate member for a clamp device, characterized in that one end of a lead wire is connected to the second contact and the other end side of the lead wire is projected to the outside of the sensor holder through the minute gap. Impact sensor.