JPH045454Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a workpiece pitch feeder that pitches a workpiece by vertical rectangular motion, and more specifically to a workpiece pitch feeder that uses a motor as a power source.

As a conveyor for conveying workpieces intermittently one pitch at a time, a device, a portion of which is shown in longitudinal section in FIG. 3, has conventionally been used. This device consists of a bell crank 2 (or alternative levers or cams) which is rotated up and down by a hydraulic cylinder 1.
After raising the transport link 3 and scooping up the workpiece 5 placed on the fixed beam 4,
The transport link 3 is moved horizontally by an amount equivalent to the feed pitch using the hydraulic cylinder 6, and lowered again at that position, leaving the workpiece 5 on the fixed beam 4, and after reaching the lower limit, moves horizontally to the old position and returns. This device feeds the work piece on the fixed beam 4 one pitch at a time by repeating the operation. In this way, the workpiece 5 on the fixed beam 4 is moved by the vertical rectangular motion of the transport link 3.
A conveyor that sequentially feeds the conveyor one pitch at a time has difficulty maintaining the pitch with high precision, and in order to drive the conveyance link 3, a hydraulic cylinder 1 for vertical movement and a hydraulic cylinder 6 for horizontal movement are required, and the control is complicated. There are many problems, such as the need for maintenance and inspection equipment.

The purpose of the present invention is to provide a workpiece pitch feeding device that solves all of the above-mentioned problems.The structure consists of a fixed beam that can freely support the workpiece, and a beam parallel to this fixed beam that allows the workpiece to be supported freely. The present invention is characterized by having a movable beam having a circular shape, and a means for imparting an arcuate circular motion in a vertical plane to the movable beam.

Next, one embodiment of the present invention will be described with reference to the drawings.

FIG. 1 shows a partially cut away perspective view of an embodiment of the present invention, and FIG. 2 shows an operational diagram.

The device of the present invention, which conveys the work piece 5 on the fixed beam 4 one pitch at a time, is a conveyor that moves the conveying beam 3 as a movable beam in an arcuate manner in a vertical plane using a motor.

Although cranks 7, 7 are used in this embodiment as means for imparting arcuate motion to the conveyance beam 3, they may be replaced by eccentric plates or the like. The base of the crank is fixed to the horizontal shaft 9 of the gear box 8. The conveyor beam 3, which is supported so as to be movable only in a vertical plane, has the lower part of the leg part 3A connected to the tip of the crank 7 via a crank pin 10, and has workpieces mounted at equal intervals on the upper edge. A receiving portion 3B is provided protrudingly. The workpiece mounting portions 3B are arranged at equal pitches with the workpiece mounting portions 4A, which are protruded from the upper edge of the fixed beam 4 and arranged at equal intervals.

The horizontal shaft 9 is the central axis of a worm wheel (not shown) supported within the gear box 8, and rotates together with the worm wheel. A worm (not shown) meshing with the worm wheel is rotated by a motor 11 shown in FIG. ing.

The intermediate shaft 12 is made up of a tube member 12A and a shaft member 12B that are spline-fitted to each other, making it possible to adjust the position and absorb manufacturing errors during installation in a factory or on a machine. Furthermore, the universal joint 13 also enables position adjustment during installation and absorption of manufacturing errors.

As a means for movably supporting the transport link 3 only in the vertical plane, for example, guide rods 14, 1 on which both sides of the leg portion 3A of the transport link 3 are slidably contacted are used.
There is a 4th prize.

The device of the present invention configured as described above has a fixed beam 4
The workpieces 5 supported on each workpiece mounting portion 4A of
The workpiece holder 3B of the transport link 3, which moves in an arc in a vertical plane by the rotation of the cranks 7, 7 driven by the motor 11, scoops up the workpiece and leaves it on the workpiece holder 4A located one pitch ahead when descending. .

In this way, as long as the transport link 3 continues its arcuate movement in the same direction in the vertical plane, the workpiece 5 on the fixed beam 4 is fed one pitch at a time. It is desirable that the motor 11 used be a brake motor, thereby increasing the accuracy with which the transport link 3 is stopped.

Furthermore, the motor 11 is a reversible motor,
If it is reversed as necessary, the device of the present invention becomes a conveyor capable of pitch-feeding the workpiece 5 in the opposite direction.

As is clear from the above explanation, the device of the present invention has many advantages such as simplifying the structure, reducing the number of parts, and extremely simple control by using only the motor as the power source. The feed pitch can be easily changed by changing the mounting height of the fixed beam relative to the movement range of the transport link, and pitch feed in the opposite direction is also possible by changing the rotation direction of the motor. It also has other advantages.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway perspective view showing an embodiment of the device of the present invention, FIG. 2 is an explanatory view of the operation, and FIG. 3 is a longitudinal sectional view showing a part of the conventional device. 3...Transportation link, 4...Fixed beam, 5...
Work, 7...Crank, 8...Gear box, 9...
Horizontal axis, 10... Crank pin, 11... Motor, 12... Intermediate shaft, 13... Universal joint.

Claims (1)

[Scope of utility model registration request] A pair of fixed beams 4 arranged parallel to each other with a required interval, and a plurality of workpiece mounts 4A provided on each fixed beam at fixed intervals in the longitudinal direction and at positions facing each other. , a pair of conveyor beams 3 that perform an arcuate circular movement in a vertical plane parallel to the fixed beam 4 and sequentially feed the workpiece placed on the workpiece mounting portion 4A of the fixed beam 4 in pitches.
In the workpiece pitch feeding device, each conveyor beam 3 is connected to a pair of cranks 7 ( or an eccentric wheel), and the input shaft of one gear box 8 is connected to the motor 11.
The input shaft of the other gear box 8 is connected to the transmission output shaft of one gear box 8 via an intermediate shaft 12 having a universal joint 13.