JPH0262472B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is used in a surface treatment device such as a plating device so that the treatment solution is uniformly attached to the surface of the workpiece in the liquid tank, or the liquid is sufficiently drained on the liquid tank before the next bath. The present invention relates to an elevating and lowering swinging device that performs a swinging and agitating operation on a basket containing a workpiece in order to prevent processing liquid from entering the basket.

Devices that roll the workpiece in or on a liquid tank to bring it into uniform contact with the processing liquid or remove the liquid include a barrel plating device that rotates a barrel containing the workpiece in a vertical direction, and a barrel plating device that rotates a barrel containing the workpiece in a vertical direction. There are devices that move the basket up and down, but the former makes a lot of noise and tends to damage the workpiece, and the latter has drawbacks such as not being evenly stirred and causing uneven plating.

Therefore, as disclosed in Japanese Patent Publication No. 57-4594, an elevating and oscillating device was invented which allows a basket containing a workpiece immersed in a liquid tank to be raised and lowered and to be oscillated back and forth.

However, in such an elevating and swinging device, the clamp devices at both ends that grip the ends of the basket are controlled by two different clamping cylinders, so if one cylinder malfunctions, the starting point of the surface treatment device will be damaged. Since the basket is grasped and raised at high speed in the part, the basket may be lifted by grasping only one end, causing the workpiece to fall.
Another disadvantage was that the device was complicated and expensive.

The reason why the above configuration uses two tightening cylinders is as follows.

Since this elevating and swinging device moves a heavily loaded basket in which workpieces are housed in a three-dimensional direction, a large load is placed on this clamping device. Therefore, in order to stably grip the basket, it is necessary to configure a clamping device with a pair of arms disposed inside and outside the upper edge of the basket, and to firmly clamp the upper end of the basket. As a result, the clamping device requires a complicated mechanism for moving the arms relatively apart in order to control the gripping and opening of the basket. Although it is desirable to open and close the left and right clamp devices using only one cylinder as a drive source for controlling the opening and closing, this is accompanied by mechanical difficulties. Therefore, in the above configuration,
Using two clamping cylinders, each clamping device is mechanically separated and opened and closed separately, so that the interlocking of the left and right clamping devices depends on the synchronous drive of the clamping cylinders.

A gripping device in which one movable claw arm on each side is actuated by a single tightening cylinder is disclosed in Japanese Patent Application Laid-open No.
53-104958, etc., but as mentioned above, in the case of this type of lifting/lowering device that violently moves a basket in three dimensions while supporting a large load, it is possible to Locking with a movable claw arm cannot withstand this problem and cannot be adopted.

SUMMARY OF THE INVENTION An object of the present invention is to provide an elevating and lowering swinging device that can control the opening and closing of clamp devices at both ends that clamp a basket between inner and outer movable claw arms and clamping arms using a single clamping cylinder. It is.

That is, the present invention suspends a horizontal beam on an elevating pedestal by two or more freely tiltable suspension rods, and a shaft tube is slidably inserted loosely into the center of the elevating pedestal so that the lower part of the horizontal beam is attached to the horizontal beam. The tip of the rod of the swing cylinder, which is tiltably mounted on the elevating frame, is connected to the movable plate that protrudes from the outside of the shaft cylinder, and the rod of the tightening cylinder, which is fixed on the shaft cylinder, is connected to the movable plate that protrudes from the outside of the shaft cylinder. an inner movable claw arm that is inserted from inside the shaft cylinder to below the horizontal beam, is pivoted by a shaft on both sides of the horizontal beam, and has a locking claw at its lower end that contacts the inner surface of the upper edge of the basket; A pair of left and right clamping arms that are pivotally supported on the outside of the claw arms by pins, and are connected to each other by the pins across a horizontal rod, the outer clamping arms having their lower ends in contact with the outer surface of the upper edge of the basket. The inner movable claw arms of the clamping device are connected to the lower ends of the rods by connecting rods, and the tilting of the clamping arm and the movable claw arm is controlled by raising and lowering the rods.

The object of the present invention is to provide an elevating and swinging device in which the clamping devices at both ends are controlled by a single clamping cylinder, and in which two or more hangings that can be freely tilted are attached to an elevating frame. A horizontal beam is suspended by a rod, a shaft cylinder is slidably inserted loosely into the center of the lifting frame, and its lower part is fixed to the horizontal beam, and a movable plate protruding from the outside of the shaft cylinder is attached to the lifting frame. At the same time as connecting the rod tips of the swinging cylinders mounted on the top so as to be tiltable, the rods of the tightening cylinders fixed on the shaft cylinders are inserted from inside the shaft cylinders below the horizontal beams.
Furthermore, the movable claw arms of a pair of clamp devices provided on both sides of the horizontal beam are connected to the lower end of the rod by connecting rods, and the tilting of the movable claw arms is controlled by raising and lowering the rod. .

An embodiment of the invention will be described with reference to the accompanying drawings.

In FIG. 1, reference numeral 1 denotes a running rail held horizontally and supported by struts 2 above the liquid tank row;
A self-propelled carrier 3 is mounted on the rail 1.
The carrier 3 moves intermittently between each treatment liquid tank X, and is raised and lowered by a built-in lifting device on front and rear lifting rods 4, 4 that hang downward.

Reference numeral 5 denotes an elevating frame fixed to the lower ends of the elevating rods 4, 4, and a horizontal beam 9 is supported below it by a pair of front and rear suspension rods 6, 6. The suspension rods 6, 6 have their upper and lower ends swingably pivoted to a pair of horizontally rotatable universal joints 7, 8, which are attached vertically to the lower surface of the elevating frame 5 and the upper surface of the horizontal beam 9, respectively. It is supported by an elevating frame 5 and a horizontal beam 9 so that it can rotate and tilt freely.

Reference numeral 10 denotes a shaft cylinder which is freely inserted into the center of the elevating frame 5 so as to be freely slidable in the vertical direction, and whose lower end is fixed to the horizontal beam 9. A tightening cylinder 11 is fixed to the upper end of the shaft cylinder 10, and the cylinder rod 12 is connected to the cylinder rod 12. The rod is inserted into the shaft cylinder 10 and its tip protrudes below the horizontal beam 9.

A movable plate 1 is attached to the shaft cylinder 10 at the upper part of the elevating frame 5.
The movable plate 13 is connected to the tip of the rod 16 of a swinging cylinder 15 which protrudes horizontally and is pivoted on a bearing 14 that can rotate horizontally on one side of the elevating frame 5 so as to be able to tilt and rotate freely up and down. It is rotatably pivoted to a bracket 17 provided at the lower part of the body by means of a pin.

Reference numerals 20 and 20 denote clamping devices provided at the front and rear portions of the horizontal beam 9, respectively, for clamping inwardly inclined edges c and c provided at the upper opening edge of the basket a containing the workpiece b.

An example of the clamp devices 20, 20 is the second and third clamp devices.
To explain the figure, movable claw arms 22, 22, which have locking claws 23 facing outward in contact with the inner surface of the inclined edge c, are connected to the shaft 2 from the front and rear lower ends of the horizontal beam 9.
1 and 21 so as to be able to swing. Further, the upper right-angled bent portion 27 of the movable clamping arms 26, 26 has an inclined surface 25 formed at the lower end to press against the outside of the inclined edge c.
are pivotally supported by pins 28 on the movable claw arms 22, 22, respectively. The movable tightening arms 26, 26 are connected to pins 28, 28.
It is connected to the lower pins 29, 29 by a horizontal rod 30 which pivots at both ends to restrain relative movement of the pins 29, 29. In the tightened state, the tightening arm 2
6 and 26 are made substantially vertical.

Further, both ends of connecting rods 31, 31 are pivotally connected to the inside of each of the movable claw arms 22, 22 and the tip of the rod 12 of the tightening cylinder 11, respectively.

The basket a is clamped by the clamp devices 20, 20.
In order to grasp it, as shown in FIG.
After arranging the inclined surface 25 of
1 to lower the rod 12. Therefore, the movable claw arms 22, 22 are pushed by the connecting rods 31, 31 and tilted outward about the shafts 21, 21,
The locking claw 23 contacts the inside of the inclined surface 25 to stand upright, and as the claw arms 22, 22 move, the pins 28, 28 of the tightening arms 26, 26 move outward, and the pins 29, 29 move outward. The tightening arm 26 tilts around and stands upright, and its inclined surface 25 touches the outside of the inclined edge c, and the inclined edge c is held between the claw arm 22 and the tightening arm 26.

When the rod 12 of the clamping cylinder 11 is raised, the claw arms 22, 22 tilt inward about the shafts 21, 21, and accordingly, the clamping arms 26,
26 tilts around the pin 29 and the inclined surface 25
Since the basket a is moved outward, the tightening of the basket a is released.

To explain the lifting and swinging operation of this embodiment with reference to FIGS. 3 and 4, the carrier 3 moves by itself onto a desired processing liquid tank X and stops while holding the basket a by the clamp devices 20 and 20. , the lifting rods 4, 4 are lowered by the lifting device to immerse the basket a into the processing liquid tank X. Thereafter, the swing cylinder 15 is operated to drive the rod 16 back into its original position.

When the rod 16 contracts from the state shown in FIG. 3, the barrel 10 rotates, and the horizontal beam 9 fixed to the barrel 10 rotates. By the way, the universal joint 8 rotates due to the rotation of the horizontal beam 9, but since the elevating frame 5 is fixed, the hanging rods 6, 6 tilt around the universal joint 7. Therefore, due to the slope, the hanging rods 6, 6
The height of the horizontal beam 9 decreases, so that the horizontal beam 9 rises while rotating (see FIG. 4). When the rod 16 is extended, it will return to the state shown in FIG. Therefore, the basket a supported on the horizontal beam 9 by the clamp devices 20, 20 is rotated back and forth and raised and lowered, and the works b inside are evenly immersed in the processing liquid. When draining the liquid from the basket a, the above-mentioned operation may be performed after the elevating frame 5 is once raised above the liquid tank.

As has been made clear from the above description, the present invention provides the following advantages:
movable claw arm 22 inside the clamp device 20, 20;
22 and outer tightening arms 26, 26 can be controlled to open and close. Therefore, cylinder 11
In the event of an accident such as inoperability, only one clamp device 20 will not operate and lift only one side of basket a, causing workpiece b to fall, and the number of cylinders 11 used will be reduced. There are excellent effects such as being able to provide a simple and low-cost device because of the small amount.

[Brief explanation of drawings]

The accompanying drawings show one embodiment of the present invention, and FIG. 1 is a schematic side view, FIG. 2 is a side view showing the basket a in an open state, and FIGS. 3 and 4 are side views showing the elevator swing. 5; Elevating frame, 6; Hanging rod, 9; Horizontal beam, 10;
Shaft cylinder, 11; Cylinder for tightening, 12; Rod,
13; Movable plate, 15; Swing cylinder, 16; Rod, 20; Clamp device, 21; Shaft, 22; Movable claw arm, 23; Locking claw, 28, 29; Pin, 2
6, 26; tightening arm; 30; horizontal rod; 31; connecting rod.

Claims (1)

[Claims] 1 Two or more hanging rods 6 that can be tilted freely on the elevating frame 5
A horizontal beam 9 is suspended by a horizontal beam 9, a shaft tube 10 is slidably inserted loosely into the center of the elevating frame 5, and its lower part is fixed to the horizontal beam 9, and a shaft tube 10 is protruded from the outside of the shaft tube 10. The tip of the rod 16 of the swing cylinder 15, which is tiltably mounted on the elevating frame 5, is connected to the movable plate 13, and the rod 12 of the tightening cylinder 11, which is fixed on the shaft cylinder 10, is horizontally moved from inside the shaft cylinder 10. An inner movable claw arm 22, which is inserted below the beam 9, is further pivoted by shafts 21, 21 on both sides of the horizontal beam 9, and has a locking claw 23 at its lower end that contacts the inner surface of the upper edge of the basket a; 22, and the movable claw arms 22, 22.
is pivoted on the outside thereof by pins 28, 28;
A pair of left and right clamping devices 20, 20 consisting of outer clamping arms 26, 26 whose lower ends contact the outer surface of the upper edge of the basket a, which are connected by pins 29, 29 across a horizontal rod 30. The inner movable claw arms 22, 22 are connected to the lower end of the rod 12 by connecting rods 31, 31, respectively, and as the rod 12 moves up and down, the tightening arms 26, 26 and the movable claw arms 22, 22 are connected.
An elevating and lowering swing device characterized by controlling the tilting of the.