JPS5935750B2 - Workpiece conveyance device using mechanical hand - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a work transfer device using a mechanical hand, in particular, workpieces having approximate outer diameters (for example, outer diameters in the range of 50φ to 120φ and diameters differing by about 30 mwL) with a fixed gap (0.5 mm). This invention relates to a workpiece conveyance device used in a device that automatically inserts, positions, conveys, automatically takes out, and automatically discharges a workpiece while maintaining a distance of 1 to 0.3 mm.

The technology of using mechanical hands to transport workpieces is well known today and is nothing new, but the development of technology to effectively transport workpieces according to predetermined objective conditions will improve productivity and save labor. It is also true that this greatly affects the elimination of wasted time.

The present invention aims to provide a method for solving the problem of how to use a mechanical hand to save labor and effectively convey a workpiece for a predetermined purpose. The explanation is as follows according to the drawings. In the drawings, reference numerals 1 and 1 indicate arm members, which, as shown in FIGS. 2a and 2b, are formed by a straight member or a member opening having a bent portion.

At one end of these arm members 1, 1, mounting holes 3, 3 for pivot pins 2, 2 and mounting holes 6, 6 for pins 5, 5 for mounting spring members 4 are provided. Claw members T, T, 8, 8 are attached to the other end.
Further, a carbide material 9 of an arbitrary shape is fixed to the contact portion with a stopper member 10, which will be described later. Reference numeral 10 denotes a stopper member, which consists of a steel ball or steel pin as shown in Figures 3a to 3d, where figure a is the steel ball itself, figure b is a partially cut steel ball, and c. The figure shows a steel cylindrical pin, and figure d shows a part of the steel cylindrical pin cut away.

This stopper 10 is connected to the arm members 1 and 1 as shown in FIG.
The arm members 1, 1 are clamped by the arm members 1, 1 and the arm members 1,
1 is for holding the workpiece loosely, and the contact surfaces with the arm members 1, 1 may be spherical or cylindrical, and from the viewpoint of wear resistance, it is preferable to use a cylindrical pin.
Reference numeral 11 denotes a body whose stop portion is in the shape of a truncated cylinder or polygonal column, and the top of this body 11 has a plurality of holes 12 for fitting the stopper member 10 at equal intervals, and pivot pins 2 for attaching the arm members 1, 1. Pin holes 13, 13 for attaching 2 are provided.

Further, a bolt hole 15 for attaching a cover 14 is provided in the center of the main body 11. Numeral 16 is a bolt for attaching the cover 14 to the main body 11.

IT is a fixed disk composed of an annular plate member surrounding the main body 11, and is normally fixed, and other operating means are used at each of the insertion, work opening, unloading, and removal stations. It is closely related to In the above configuration,
First, the pivot pins 2, 2 are attached to the pin holes 13, 13 of the main body 11, and the holes 3, 3 of the arm members 1, 1 are attached to the pivot pins 2, 2.
mate. Next, the stopper member 10 is fitted into the hole 12 provided in the main body 11, and the pins 5, 5 for attaching the spring members are fitted into the holes 6, 6 provided in the arm members 1, 1. A pair of arm members 1, 1 are connected to the pins 5, 5, and a stopper member 1 is attached to the pins 5, 5.
A spring member 4 is attached so that it can be elastically drawn inward while holding the 0. As described above, the arm member 1,
1 is attached to the fixed disk I through a means (not shown) for intermittently driving the main body 11 located at the lower part of the main body 11.
Attach to T to form a workpiece conveyance device. There are two types: one type in which the main body 11 and the means for intermittent driving the main body 11 are integrated, and the other type in which the main body 11 and the intermittent driving means are separate bodies and are fitted together. In the former case, the arm members 1, 1 themselves are replaced, and in the latter case, the arm members 1, 1 are replaced while being attached to the main body 11 in advance. Next, the operation of this work transfer device will be explained using an example in which it is used in a product transfer device of a bearing inspection machine having four workpiece holding devices as shown in FIG. First, a workpiece transported to a loading position (not shown) by any means such as a conveyor is automatically received at an insertion station by any means. If the position of the axis of the product by the loading device is unstable, one arm member 1 is opened as shown in FIG. 1 to facilitate loading. Next, while the workpiece is held by the arm members 1, 1, the main body is rotated by means of intermittent driving, the workpiece is moved to the work station, and after the work such as inspection is finished at the work station, the body is rotated again. The main body 11 is rotated by the driving means to transport the workpieces to a carry-out station and then to another arbitrary means such as a conveyor, and non-conforming products are transported to a rejection station and delivered to other rejection means. Incidentally, the center of the workpiece can be kept substantially constant simply by replacing the stopper member 10 depending on the size of the workpiece. Further, the state in which the arm members 1, 1 hold the workpiece is not necessarily vertical as shown in FIGS. 4a and 4b, but may be tilted as shown in FIG. 4b. In addition, for attaching and detaching the workpiece to and from the arm members 1, 1, a claw member T attached to the tip of the arm member 1, 1 is used.
Since T, 8, 8 are inclined as shown in FIG. 1, the arm members 1, 1 can be opened and closed without using other devices.
The arm members 1, 1 can be spread apart by the workpiece itself to be attached or removed. As explained above, this invention
A main body that protrudes from the center of a disc that rotates intermittently in correspondence with a plurality of stations, and has a plurality of arm member attachment parts on the top at equal intervals in the circumferential direction, and a base on each arm member attachment part on the top of the main body. a pair of arm members whose ends are pivotally supported via a pivot pin and whose tips open and close; and a pair of arm members stretched between the pair of arm members;
a spring member that applies a clamping force to the arm members; a horizontal V-shaped claw member that is symmetrically attached to the inner surface of the distal end side of the pair of arm members to clamp the workpiece in a fixed position; A mechanical hand is attached to the top of the main body at the center of the proximal end in a removable and replaceable manner according to the size of the workpiece, and consists of a stopper member that regulates the opening angle of the arm member, and a means for intermittently rotating and driving the main body. The present invention relates to a workpiece conveyance device, and by using the device of the present invention, it is possible to easily and reliably automatically insert, position, convey, and automatically discharge a ring having an approximate outer diameter while maintaining a certain gap. Because it can improve productivity, save labor, and eliminate wasted time, it is extremely effective as a practical soil.

[Brief explanation of the drawing]

FIG. 1 is a plan view of a work transfer device using a mechanical hand according to the present invention. Figures 2a and 2b are drawings showing two basic types of arm members. Third
Figures a to d are drawings showing various types of stopper members. FIGS. 4a and 4b are drawings showing a state in which the claw member holds a workpiece.
1, 1... Arm member, T, T, 8, 8...
・Claw member, 9... Carbide material, 10...
・Stopper member, 11... Main body, 1T...
...Fixed disc, 4... Spring member.

Claims (1)

[Claims] 1. A main body that protrudes from the center of a disk that rotates intermittently in correspondence with a plurality of stations, and has a plurality of arm attachment parts at equal intervals in the circumferential direction on the top, and each arm attachment part on the top of the main body. A pair of arm members whose base ends are pivotally supported via a pivot pin and whose tips open and close, a spring member stretched between the pair of arm members and applying a clamping force to the arm members, and the pair of arms. A horizontal V-shaped claw member that is symmetrically attached to the inner surface of the distal end side of the member and holds the workpiece in place, and a claw member that is attached to and detached from the top of the main body at the center position on the proximal side between the pair of arm members according to the size of the workpiece. A workpiece transfer device that uses a mechanical hand that is configured with a stopper member that is replaceably attached and that regulates the opening angle of an arm member, and a means that drives the main body to rotate intermittently.