JPH0335539Y2 - - Google Patents

Description

[Detailed description of the invention] Technical field The present invention is an automatic chuck attachment exchange device for a take-out device, more specifically, an automatic chuck attachment exchange device for a take-out device that grips and takes out products from an injection molding machine, and automatically changes the chuck attachment of the take-out device to the chuck plate. This article relates to devices that can be replaced and installed.

BACKGROUND OF THE INVENTION Injection molding machine take-out devices require chuck attachments to be replaced. In conventional extraction devices, chuck attachments were replaced manually. Air piping for cylinder operation and electrical wiring for various electrical controls run between the chuck attachment and the extractor body, and when replacing the chuck attachment, check the connections of each piping and wiring. Since switching is required, it has been difficult to automate the exchange of chuck attachments.

The present applicant has proposed a device that solves the above-mentioned conventional problems and automates the exchange of chuck attachments.
It was proposed as No. 59-180388.

Purpose The purpose of the present invention is to make the above-mentioned device made by the present applicant more compact and to simplify the structure.

Structure and Function The present invention has the above-mentioned objects: a double-acting cylinder fixed to a base plate attached to a chuck plate of a take-out machine; a base plate fixed to a piston rod of the cylinder; This was achieved by a device having finger levers arranged opposite to each other, a release lever for moving the finger levers to a position where the gripped product is released, and means for moving the release lever.

According to the present invention, the double-acting cylinder is actuated to reciprocate the piston to move the base plate, and when the base plate rises, the finger lever rises, and immediately after the start of the rise, the release lever is returned to the standby position, and the finger lever is activated. The chuck attachment is rotated to the position and the chuck attachment is grasped between the finger levers, and the finger levers are raised while grasping the chuck attachment. Once in position, the chuck attachment automatically connects to the piping and wiring couplers provided on the base.

When the base plate is lowered, the coupler is released immediately after the base plate starts lowering to cut off the connection of piping and wiring, and when the base plate is lowered a predetermined distance, the release lever is moved and the finger lever is moved to release the chuck attachment.

EXAMPLES The details of the present invention will be explained with reference to examples shown in the drawings.

1 to 3, a molding machine 51, for example, an injection molding machine, a die casting machine, etc., inserts a molded product into a mold 5.
A chuck attachment 3 is attached to a chuck plate 2 of a take-out device 1 from which the chuck is taken out. The chuck attachment 3 includes molded product gripping means 3a;
Molded product position detection means (not shown) and the like are provided.

2 to 6, the base 5 of the automatic exchange device 4 is fixed directly or indirectly to the chuck plate 2 shown in FIGS. 1 to 3 by a support member 27. In FIGS. The left half of FIG. 4 shows the activated state, and the right half shows the released state.

A double acting cylinder 6 is fixed to the base 5. A base plate 8 is fixed to the piston rod 7 of the double-acting cylinder 6 by bolts 9, and the base plate 8 moves up and down in the figure in accordance with the movement of the piston.

A finger lever 11 is attached to both ends of the base plate 8 by a pin 10.
is rotatably pivoted. Two opposing finger levers 11 act as a pair of fingers, each having fingers 12 for clamping the formed product therebetween.

Bracket 13 and finger lever 1 attached to base plate 8
A finger spring 14 is stretched between the end of the finger lever 11 and the finger lever 11 so as to press and hold the finger lever 11 in the operating position.

A holder 15 is fixed to the base 5, and a pin 16 is rotatably supported on the holder 15. The release lever 17 is not limited to this structure, and may have a structure in which it is rotatably supported by a pin fixed to the holder 15.

One release lever 17 is provided corresponding to each finger lever, and has a contact portion 17a that contacts the finger lever 11.
and a support portion 17b supported by the pin 16,
The contact portion 17a and the support portion 17b are mutually formed into a substantially L-shape.

An actuating rod 18 is inserted into the base plate 5 so as to be able to slide up and down, and the lower end is connected to the support portion 17b of the release lever 17.
It is supported in contact with.

A spring 19 is tensioned between the abutting portions 17a of the two release levers 17 corresponding to the pair of finger levers 11. Unlike the example shown, the spring 19 is attached to each release lever 1.
It is also possible to have a structure in which it is stretched between the base 5 or the holder 15 and the base 5 or the holder 15.

The base 5 is provided with piping holes 28 and wiring holes as necessary.

In Fig. 4, the piping holes 20 are shown in Figs. 7 and 8.
A first coupler half 21 of a commonly available locking coupler having the structure shown in the figure is secured. A second coupler half 23 that is detachable from the first coupler half 21 is attached to a plug collection plate 22 attached to the chuck attachment 2. For example, the second coupler half 23 is screwed and fixed to a piping plug 28 inserted into the plug collection plate 22. The lock release plate 25, which has a piping hole 29 into which the first coupler half 21 is inserted and can come into contact with the release ring 24 of the lock device provided on the first coupler half 21, is moved by the support portion 17b of the release lever 17. Supported. Since the locking device of the first coupler half 21 is inserted into the hole of the lock release plate 25, the lock release plate 25 will not fall off.

The operation of this device will be explained below.

A state in which the cylinder 6 is operated in the direction of moving the piston downward as shown in the right half of FIG. 2 will be described as a standby state.

When the chuck attachment 22 is placed between a pair of opposing fingers 12 of the finger lever 11, the piston of the cylinder 6 is actuated to move upward. As a result, the base plate 8 rises, and the actuating rod 18, which the base plate 8 is pushing down, is activated by the spring 19 to release the release lever 17.
As the actuating rod 18 returns to the non-operating position, it is pushed up by the supporting part 17b, and the actuating rod 18 is pushed up by the supporting part 17b.
b follows the base plate 8 and rises by a predetermined amount until it returns to the predetermined position. As the actuating rod 18 rises, the abutting portion 17a of the release lever 17 moves closer to the finger lever 11.
move away from. At this time, finger spring 1
4, the finger lever 11 is rotated and reaches the engagement position with the plug collecting plate 22, and the plug collecting plate 22 is held between the two finger levers 11. Thereafter, as the piston rises, the finger lever 11 rises together with the base plate 8, and the plug collection plate 22
rise. When the second coupler half 23 is fixed to the plug collecting plate 22, the tip of the second coupler half 23 is inserted into the first coupler half 21, as shown in the left half of FIG. is activated, e.g. the first coupler half 21
The ball 30 provided in the second coupler half 23 engages with the recess 31 of the second coupler half 23, and the second coupler half 23 is locked in the state attached to the first coupler half 21.

When the chuck attachment 3 is removed and replaced, the piston of the cylinder 6 is moved downward. When the base plate 8 is lowered by a distance l due to the lowering of the piston, it comes into contact with the actuating rod 18. When it is further lowered, the actuating rod 18 is also lowered, so that the support portion 17b with which the lower end of the actuating rod 18 is in contact is pushed, and the release lever 17 rotates around the pin 16. As the release lever 17 rotates, the support portion 17b pushes up the lock release plate 25,
At the same time, the contact portion 17a pushes the finger lever 11 and rotates it.

When the release lever is rotated a predetermined amount, the finger lever moves to the chuck attachment 2 as shown in the right half of Figure 2.
Reach the position to release 2. The support portion 7 of the release lever 17 is released around the time when the plug collection plate 22 is released from the finger 12 at the tip of the finger lever 11.
The release plate 25 pushed up by b is the first
Push up the locking ring 24 provided on the coupler half 21 as shown in FIG. 7 to unlock the locking device.
The ball 30 rises from the lock position where it is prevented from leaving the recess 31 to the unlock position where the ball 30 is released from being restrained. Thus ball 3
0 is now movable and when the second coupler half 23 is subjected to a pull-out force, the ball 30 disengages from the recess 31, allowing the second coupler half 23 to disengage from the first coupler half 21. The plurality of first coupler halves 21 attached to the base 5 can be unlocked simultaneously by the movement of the release plate 25. The plug collecting plate 22 is thus released from the base 5 or the chuck plate 2.

Repeat the above operations.

In order to smooth the movement of the base plate 8 due to the vertical movement of the piston, the guide bar 26 is connected to the cylinder 6 or the base plate 5.
can be fixed to.

Effects By using a double-acting cylinder with this invention, the finger lever can be moved up and down reliably with one cylinder.
The device could be made more compact.

By providing a release lever that is activated at a predetermined timing on a base plate that is moved up and down by a piston, it has become possible to accurately control the activation timing of the finger lever with a simple device.

[Brief explanation of the drawing]

Figure 1 is a schematic diagram showing the relationship between the molding machine and the take-out machine, Figure 2 is a front view of the main parts of the take-out machine, Figure 3 is a left side view of Figure 2, and Figure 4 is the automatic exchange according to the present invention. FIG. 5 is a front view of the device, FIG. 5 is a bottom view, FIG. 6 is a side view, FIG. 7 is a sectional view of the coupling, and FIG. 8 is a sectional view showing the coupling shown in FIG. 7 in an attached state. 1...Takeout machine, 2...Chuck plate, 3...
...Chuck attachment, 5... Board, 6...
Cylinder, 8... Base plate, 11... Finger lever, 17
... Release lever, 19 ... Spring, 18 ... Actuation rod (release drive member), 22 ... Plug collection plate.

Claims (1)

[Scope of utility model registration request] A take-out device for a molding machine having a chuck plate for attaching a chuck attachment, comprising a base plate attached to the chuck plate, a double-acting cylinder fixed to the base plate, and at least one pair fixed to a piston rod of the cylinder. at least one pair of finger levers that are pivotally connected to the base plate and arranged opposite to each other; and at least one pair of finger levers that are pivotally attached to the base board and abut on each of the finger levers at a position away from a pivot point of the finger levers. having a possible plurality of release levers, a spring that holds the release lever in a standby position without acting on the finger lever, and a release drive member that moves the release lever into the actuated position in relation to the movement of the base plate; An automatic chuck attachment exchange device for a take-out device, which is characterized by: