JPH0224496Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an improvement of a press board transfer device.

(Prior art) Generally, when pressing press plates are fed one by one to the press mold section, the press plates are fed one by one from a stacker stacked with blank press plates to a gripping position, and the press plates are fed from the left and right to the gripping position. A press plate material is transferred to each press die section of a transfer press by grasping the press plate material with a member and moving the finger member forward (see, for example, Japanese Utility Model Application No. 54-86785).

However, when the press plates are fed one by one from the stacker to the gripping position, two or more press plates come into close contact with each other due to oil adhering to the press plates, and are then fed to the gripping position and directly transferred to the transfer press. May be transported. As a result, the mold in the press mold section was damaged, resulting in a large amount of damage due to mold repair and line stoppage.

For this reason, conventionally, a limit switch is installed on the conveyor that supplies the press plate material to the gripping position or on the idle stage before the pressing process of the transfer press to detect the thickness of the press plate material being transferred. When transferring more than one sheet of press plate material, the transfer press was stopped to prevent the transfer. However, since the limit switch relies on electrical detection, there is no absolute guarantee of its operation, and malfunction may cause accidental transfer. There is a problem in that more than one sheet of press plate material may be transferred to the press die section of the transfer press, and the reliability of preventing transfer is lacking.

Therefore, in Utility Application No. 57-187538 (see Utility Model Publication No. 63-47387), the present applicant proposed that when a plurality of press plate materials are supplied to the supply position, the second or more press plate materials are pressed by a stopper member. We have proposed a conveying device for press plates that prevents the plates from passing and releases the engagement of a locking member that locks the press plates from the rear to release and remove them from the clamping members.

According to this, it is not only the second or more press plates that are released and removed from the holding member, but all the stacked press plates including the first press plate are released and removed, so multiple presses Although it is possible to prevent the plates from being transferred to the press mold section, the transfer of all the stacked press plates is blocked, so it is necessary to stop the press line.

(Purpose of the invention) The present invention was made in order to solve the above-mentioned conventional problems, and even when two or more press plates are gripped by the finger members, it is possible to reliably transfer only one press plate and prevent it from remaining. It is an object of the present invention to provide a press plate material transfer device that is capable of holding a press plate material in a gripping position.

(Structure of the invention) Therefore, in the present invention, a stopper member having a gap through which only one press plate material can pass is provided in front of the gripping position, while a stopper member is provided on the rear side of the finger member. A gripping portion is provided in which a step slightly smaller than the thickness of the press plate material is formed and that grips and transfers only the one press plate material, and is swingably supported on the rear upper surface of the finger member and gripped by an elastic member. A claw member is provided that is biased in the direction,
The claw member is configured to grip the rear part of the upper press plate material of the overlapping press plates, and when the finger member moves forward, press the upper press plate material against the stopper member and hold it there. be.

(Effects of the invention) According to the invention, only one press plate is gripped by the gripping portion on the rear side of the finger member, and the rear part of the overlapping upper press plate is gripped by the claw member. As the finger members move forward, only one gripped press plate material is transferred passing between the stopper members, and one sheet can be transferred reliably without stopping the press line.

In addition, when the finger member moves forward, the rear part of the remaining press plate material is pressed against the stopper member by the claw member, so that it is securely held in that part without being blown away by the shock of a collision with the stopper member. Become.

(Example) FIGS. 1 and 2 show a line process in which disk-shaped press plates W are fed one by one to a predetermined gripping position and then transported to each press mold section of a transfer press.

1 is a stacker stacked with a large number of press plate materials W, W...; 2 is a chute disposed in front of the stacker 1 in the transport direction; 3 is disposed above between the stacker 1 and the chute 2; This is a stack feeder in which the press plates W stacked on the stacker 1 are suspended one by one by the stack feeder 3 and transferred onto the chute 2, and then the chute 2 is used to It is adapted to be supplied to a gripping position on the idle stage 5 which serves as a gripping position.

Reference numeral 6 denotes a transfer press disposed in front of the idle stage 5 in the transfer direction, and the transfer press 6 includes press mold parts 6a and 6.
b are arranged at equal intervals and at the same height as the gripping position, and the press plate material W is successively set up and formed.

The above idle stage 5 and press mold section 6
In a, 6b, 7a and 7b are a pair of transfer bars extending parallel to the transfer direction, which are disposed on the right and left sides of the idle stage 5 and the press mold parts 6a, 6b, and the transfer bars 7a, 7b are the first and second transfer bars. As shown by broken lines in FIG. 1, a cylinder (not shown) is operated to repeat a rectangular movement of forward movement, outward movement, backward movement, and inward movement.

The transfer bars 7a, 7b have finger members 8a, 8a, .
b, 8b... are provided in pairs facing each other.

Then, by moving the transfer bars 7a, 7b inward, the transfer bars 7a, 7b are transferred closer to each other from the left and right so as to narrow the distance between them, thereby press plate material W and press mold part 6 supplied to the gripping position.
After gripping the press plate materials W, W placed on the a, 6b from the left and right by the finger members 8a, 8b, respectively, the transfer bars 7a, 7b are set at a predetermined pitch (the distance between the gripping position and the press mold part 6a, and the press The finger members 8a, 8b move forward due to the forward movement of the gap between the mold parts 6a, 6b, and the press plate material W at the gripping position is transferred to the press mold part 6a.
The press plate material W of a is transferred to the next press die part 6b, and the press plate material W of the last press die part 6b is transferred to the front of the transfer press 6, and then each transfer bar 7a, 7b is moved outward. The press plate material W supplied to the gripping position is sequentially moved to each press mold part 6a of the transfer press 6. , 6b, the press plate material W is sequentially press-molded into a predetermined shape by the respective press die sections 6a and 6b.

On the other hand, a stopper member 9 is provided directly above the gripping position of the idle stage 5, and a stopper portion 10 is provided to protrude downward from the lower front surface of the stopper member 9, that is, in front of the gripping position. The lower end of the section 10 is, as shown in detail in FIG.
The interval s is t<s< with respect to the thickness t of the press plate material W.
It is set within the range of 2t, and the finger member 8
When transferring the press plate material W at the gripping position gripped by the fingers a and 8b, only the lowest one of the press plate materials W on the finger members 8a and 8b can pass, but the second or more sheets stacked above it can pass through. The press plate material W contacts the stopper portion 10 to prevent its passage.

As specifically shown in FIGS. 3 and 4, the finger members 8a and 8b have gripping portions 8c and 8d in which a step t' slightly smaller than the thickness t of one press plate material W is formed. The bottom surfaces of the gripping portions 8c and 8d receive and support the lower surface of the press plate W, and the outer circumferential surface of the press plate W at the lowest stage is gripped by the arcuate surface.

On the rear upper surface of the finger members 8a, 8b,
Claw members 11a and 11b that grip the outer peripheral surface of the rear part of the press plate material W stacked above the lowest press plate material W held by the gripping parts 8c and 8d of the finger members 8a and 8b can swing back and forth. pin 12
Spring shafts 15a, 15 are pivotally connected at a, 12b, are movably supported by brackets 13a, 13b of finger members 8a, 8b, and are biased in the projecting direction by coil springs 14a, 14b.
b comes into contact with the claw members 11a, 11b and urges the claw members 11a, 11b in the gripping direction.

The claw members 11a, 11b are oriented in the gripping position by a stopper (not shown) while being biased in the gripping direction.

If the transfer device for press plate material W is configured as described above, when one press plate material W passes through the chute 2 and is supplied to the gripping position, it is transferred to the gripping portions 8c of the left and right finger members 8a and 8b. , 8d, and the press plate W is pressed into the press mold parts 6a, 6 by the forward movement of the finger members 8a, 8b.
b, and are pressed into a predetermined shape by the press mold parts 6a and 6b.

On the other hand, when two or more press plates W, W, ... are brought into close contact with each other due to oil adhering to the surface of the press plate W, W, etc. and are supplied to the gripping position, the most of the press plates W, W,... The lower press plate material W is attached to the gripping portions 8c and 8 of the fingers 8a and 8b in the same way as above.
d, the press plates W, .

Therefore, the second or more press plate materials W, ... are the claw members 11a, 11b of the finger members 8a, 8b.
Since it is pressed against the stopper member 10 by the stopper member 10, the shock of the collision with the stopper part 10 does not cause it to be thrown backward.

Then, when the finger members 8a, 8b further move forward, the second or more press plate materials W,...
remain in contact with the stopper portion 10, the claw members 11a, 11b are moved by the coil springs 14a, 14b as the finger members 8a, 8b move forward.
It swings backward against the urging force of , and releases its grip on the second or more press plates W, . . . .

Then, the press plates W, ... fall onto the idle stage 5 and are accurately held at the gripping position, and the finger members 8a, 8b moving in the next cycle move the press plates W,... It will now be transported forward as a W.

[Brief explanation of the drawing]

Figure 1 is a plan view of the transfer device according to the present invention, Figure 2 is a plan view of the transfer device according to the present invention;
The figure is a side view of FIG. 1, FIG. 3 is a plan view of the finger member, and FIG. 4 is an enlarged sectional view taken along the line - in FIG.
FIG. 5 is an enlarged sectional view taken along the - line in FIG. 3. 7a, 7b...transfer bar, 8a, 8b...finger member, 8c, 8d...gripping part, 9...stopper member, 10...stopper part, 11a, 11b
...Claw member, 12a, 12b...Pin, 14a,
14b...Coil spring, W...Plate material, s...Diameter, t...Plate thickness, t'...Step.

Claims (1)

[Scope of Claim for Utility Model Registration] A device for transferring a press plate by gripping a press plate supplied to a gripping position with finger members from the left and right sides and moving the finger members forward, the apparatus comprising: A stopper member having a gap through which only one press plate can pass is disposed, and a step slightly smaller than the thickness of one press plate is formed on the rear side of the finger member, so that only one press plate can pass through the stopper member. A gripping portion that grips and transfers only the plate material is provided, and a claw member that is swingably supported and biased in the gripping direction by an elastic member is provided on the rear upper surface of the finger member, and the claw member overlaps. A press plate material characterized in that when the finger member moves forward by grasping the rear part of the upper press plate material of the joined press plate material, the upper press plate material is pressed against a stopper member and held therein. transport device.