JPH0330355Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a device for conveying a plate material to a processing position of a press using a suction cup using a vacuum cylinder during press work. This relates to a conveying device that can perform a so-called one-touch operation.

(Prior Art) As a plate material conveying device for a press, a conveying device using a suction cup using a vacuum cylinder is well known. Among the conventional technologies, a suction device in which two suction cups were installed in one cylinder was developed in 1973.
It is introduced in Publication No. 26788.

In the above-mentioned prior art, a wing-shaped cup attachment portion having an elongated hole for attaching a suction cup is provided on the lift main shaft, and the suction cup is fixed to the elongated hole of the cup attachment portion. Since the suction cup is slidable within the elongated hole, the setting position of the suction cup can be arbitrarily selected. Therefore, the above-mentioned invention is capable of suctioning various plates having different shapes and sizes, and is particularly suitable for conveying plates having a hole in the center.

In the above-mentioned prior art, the suction cup is detachably attached to the cup attachment part, and when transporting a small plate, one suction cup is removed and only one cup is used to suction the plate.
However, since the cup mounting portion for attaching the suction cup is provided to protrude laterally with respect to the lift main shaft, even if the suction cup is removed, the cup mounting portion obstructs the conveyance operation.

Further, since the above-mentioned prior art has a structure in which the intake pipe is connected to the suction cup at the same time as the suction cup is attached, there is a problem in that the suction cup cannot be replaced with a so-called one-touch operation.

(Problem to be Solved by the Invention) The problem to be solved by the present invention is to provide a conveying device in which a suction cup and a support member for the suction cup can be detachably attached to the device.

(Means for solving the problem) The means for solving the problem in this invention are as follows:
A connecting member provided on the lift main shaft constituting the conveyance device, mounting legs formed on the left and right positions of the connecting member, a valve chamber provided in the mounting leg, and an opening provided in the connecting member to communicate with each of the valve chambers. an air passageway accommodated in each of the valve chambers, a valve lever that is biased upward so that the valve seat presses against the upper step of the valve chamber to close the air passageway, and a suction cup, one end of which is attached to the above-mentioned attachment point. It consists of a support arm that connects to the leg, an air pipe that connects a connection terminal provided at one end of the support arm to the head of the suction cup, and a connecting pin provided at the joint between the support arm and the mounting leg, and The valve chamber is opened when the support arm is attached to the mounting leg of the connecting member, thereby allowing the suction cup and the valve chamber to communicate with each other.

(Function) When the suction cup 12 is attached to a conveying device, the support arm 11 is brought into close contact with the mounting leg 2a.
Then, the valve rod 4 is pushed by the contact terminal 17,
The valve rod 4 descends against the spring 7, and the valve chamber 3 and the communication hole 6 communicate with each other. Therefore, the air supplied to the main through hole 8 is supplied to the suction cup 12 via the air pipe 19 to generate suction force.

Further, when removing the suction cup 12 from the conveying device, the support arm 11 is removed from the device. If the support arm 11 is lifted upward, the support arm 1
1 is removed from the connecting member 2, and at the same time the valve rod 4 is released from the spring 7.
The upper step 3a of the valve chamber 3 and the valve seat 5 come into close contact with each other, thereby closing the air passage.

(Example) Figure 1 is a partial vertical cross-sectional view of the entire assembly, Figure 2
The figure is a bottom view of the same, and FIG. 3 is a cross-sectional view taken along line A-A in FIG. There is. Further, mounting legs 2a, 2a are formed in the left-right direction on the connecting member 2, and a valve chamber 3 is provided in the mounting leg 2a in parallel with the axial direction of the lift main shaft. Incidentally, since both the mounting leg 2a and the suction cup 12, which will be described later, have the same structure, only one member will be described hereinafter.

A valve rod 4 whose upper end projects from the mounting leg 2a and has a valve seat 5 formed in the middle thereof is housed in the valve chamber 3 so as to be slidable in the vertical direction. Further, a communication hole 6 is formed in the valve rod 4 from the upper end of the valve rod 4 along the center thereof, and opens to the atmosphere above the valve seat 5. Furthermore, a spring 7 is attached to the lower end of the valve rod 4, and the valve rod 4 is always pressed upward so that the valve seat 5 is attached to the upper step 3 of the valve chamber 3.
a, thereby connecting the communication hole 6 and the valve chamber 3.
is in a state of occlusion.

The connecting member 2 is provided with a main through hole 8 for supplying air on the front side of the connecting member 2. The main through hole 8 extends from the main through hole 8 in the left-right direction and accommodates the lower portion of the valve seat 5. Vent holes 9, 9 facing the valve chamber 3 are provided.

A support arm 11 is detachably provided on the mounting legs 2a, 2a of the connecting member 2, and a suction cup 12 having a conventional aspinota type suction mechanism is provided on the support arm 11. The head shaft 13 of the suction cup 12 is slidable vertically relative to the support arm 11, and is biased downward by a spring 14. or,
The support arm 11 is formed with a holding plate 15 having a bifurcated lower portion for holding the mounting leg 2a, and an air connection terminal 17 is provided above the holding plate 15. On the other hand, the head shaft 13 is also provided with a connecting terminal 18, and an air pipe 19 is connected between these two connecting terminals 17 and 18.

Note that a lid plate 2 is provided on the lower surface of the center of the connecting member 2.
2 is attached, and if this is removed, a suction cup can also be attached to that part.

FIG. 4 is a sectional view taken along the line BB in FIG. 1, and the locking device for the support arm 11 and the connecting member 2 will be explained with reference to the figure. After the support arm 11 is attached to the mounting leg 2a via the holding plate 15, a pin 20 is inserted to fix both.

The embodiment has the above structure, and the support arm 11
When the support arm 11 is brought into close contact with the mounting leg 2a in order to connect the valve to the connecting member 2, the valve rod 4 is pushed by the connecting terminal 17, and the valve rod 4 descends against the spring 7, thereby opening the valve chamber. 3 and the communication hole 6 communicate with each other. Therefore, the air supplied to the main through hole 8 is supplied to the head shaft 13 of the suction cup 12 through the air pipe 19, and is further supplied to the suction cup 12 to generate suction force.

In addition, in order to ensure the connection between the support arm 11 and the connecting member 2, a connecting pin 2 is provided on the mounting leg 2a.
A retainer 21 that engages with the 0 is provided.

Also, when removing the support arm 11, use the connecting pin 2.
0 is removed and the support arm 11 is lifted upward, the support arm 11 is detached from the connecting member 2, and at the same time, the valve rod 4 is raised by the action of the spring 7, and the upper step 3a of the valve chamber 3 and the valve seat 5 are removed. When they come into close contact with each other, the air passage is blocked.

(Effects of the invention) According to the present invention, the support arm having the suction cup can be attached to the connecting member constituting the conveyance device with a so-called one-touch operation. Since the support arm is attached to the connecting member together with the support arm, the support arm does not remain in the device when the suction cup is removed, so the support arm does not interfere with the conveyance work and has the effect of improving work efficiency. be.

[Brief explanation of the drawing]

Figure 1 is a partially longitudinal side view of the entire assembly.
2 is a bottom view of the same, FIG. 3 is a sectional view taken along the line AA in FIG. 1, and FIG. 4 is a sectional view taken along the line BB in FIG. DESCRIPTION OF SYMBOLS 1... Lift main shaft, 2... Connection member, 3... Valve chamber, 4... Valve rod, 5... Valve seat, 6... Communication hole, 7... Spring, 8... Main communication hole, 9... …Vent holes,
11...Support arm, 12...Delivery cup, 13
... Head shaft, 14 ... Spring, 15 ... Holding plate, 1
7... Connection terminal, 18... Connection terminal, 19... Air pipe.

Claims (1)

[Scope of utility model registration request] A connecting member provided on a lift main shaft constituting the conveyance device, mounting legs formed on the left and right positions of the connecting member, a valve chamber provided in the mounting leg, and an opening provided in the connecting member to communicate with each of the valve chambers. an air passageway accommodated in each of the valve chambers, a valve lever that is biased upward so that the valve seat presses against the upper step of the valve chamber to close the air passageway, and a suction cup, one end of which is attached to the above-mentioned attachment point. It consists of a support arm that connects to the leg, an air pipe that connects a connection terminal provided at one end of the support arm to the head of the suction cup, and a connecting pin provided at the joint between the support arm and the mounting leg, A conveyance device equipped with a suction cup, characterized in that when the support arm is attached to the mounting leg of the connecting member, the valve chamber is opened to allow communication between the suction cup and the valve chamber.