JPS5986297A - Work supplying chute - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a workpiece supply chute for an automatic machine such as a matchmaking machine for assembling electric circuit parts, testing machines, printed circuit boards, etc., which feeds worksheet sheets.

Self! lX114N The 4 precepts usually store a large number of workpieces, and supply them one by one to a predetermined location as needed in a certain predetermined posture, and the supplied workpieces one by one. It is composed of a working section that picks up the workpieces, transports them to another location, and performs the intended work such as assembly or testing, and a discharging section that takes out the finished workpieces, arranges them on pallets, etc., and discharges them. Among them, various mechanisms for the supply section have been considered, but one of them, as shown in the side view in FIG. 1, is widely and generally used. That is, a large number of workpieces 5 are lined up on the inclined chute l, and the workpiece input port 2
This is done by pushing the lowest workpiece against the workpiece positioning stopper 4 provided in the horizontal part at the bottom of the chute, using the force of the workpiece to fall down the slope. be. When the positioned workpiece at the bottom is held in place by a chuck (not shown) or the like and forcibly removed in the direction of the arrow 3, the workpiece at the top slides on the chute slope due to the pressure. The next workpiece is immediately positioned by pushing out the workpiece next to the removed workpiece to the positioning stopper. Such a mechanism is generally called a work supply sheet. Additionally, this method is widely used because it requires no moving parts and has a simple structure.

However, the Bozu method shown in FIG. 1 has the following drawbacks. In other words, when the number of workpieces stored on the inclined surface of the seat decreased, the force for pushing the workpieces up to the positioning stopper became weaker, resulting in poor positioning accuracy and, furthermore, the workpieces were not pushed out to the positioning stopper. 9 problems will occur.

Therefore, the disadvantage is that the worker has to replenish the slope of the sheet at all times in order to avoid leaving more than a certain amount of work on the sheet, and when there is no more work to replenish. The disadvantage is that the last few pieces of work remaining on the sheet must be manually pushed out to the positioning stopper by the operator.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a workpiece supply chute that eliminates the above-mentioned drawbacks.

In the work supply chute according to the present invention, a one-foot-long chute portion including a workpiece ejection opening at the lower end is connected to an upper chute portion fixed in an inclined state by a joint mechanism, and the joint is pivoted. By swinging up and down, it can be changed to both a tilted and horizontal state.

When using this sheet, the entire chute is initially kept in a straight line and inclined. In this state, the operator inserts an excessive amount of workpieces into the workpiece input port 2 at the upper end of the chute. Workpiece 5 that has been introduced falls down inside the chute due to its own weight,
The first workpiece introduced is positioned within the chute by the positioning stopper 4 at the upper end of the chute, and the subsequent workpieces 5 are stacked above it (see FIG. 2(a)).

When feeding one workpiece to the working section from this state, the swinging chute portion 7 below the joint point 8 is moved from the tilted state to the horizontal state using a separately provided drive mechanism (not shown). Change the top end by bending it. The bending angle is just enough to raise the sheet, which was initially tilted downward, to a horizontal position, so the workpieces contained therein will not move within the chute. Therefore, the workpiece initially positioned by the positioning stopper 4 changes its posture to a horizontal state while being positioned (see FIG. 2(b)). From this state, the working unit pulls out the positioned workpiece upward using a chuck (not shown) (see FIG. 2(c)).

Thereafter, the swinging chute upper end 7 tilts downwardly again about the joint and is aligned with the fixed chute part 6.

Then, the entire workpiece remaining in the chute falls toward the positioning stopper by the length of one removed workpiece, and the lowest workpiece is positioned by the positioning stopper (see Figure 2). .

Then, the state changes to the horizontal state again, and the working section stops when the workpiece can be removed again (see Fig. 2 (E)).After that, the above operation is repeated every time the working section removes the workpiece, and the positioning stopper It is operated so that the workpiece is constantly positioned in the sheet and prepared in a horizontal state.If the workpiece in the sheet becomes low during the process, it can be replenished by inserting the workpiece into the workpiece input port at any time.Also,
In order to prevent the workpiece inside from being damaged at the joint point by bending the chute, the length between the positioning stopper and the joint point should be equal to an integral multiple of the length of the workpiece. In addition, the joint point of the chute and the seam between the workpieces coincide, and it is possible to prevent excessive force from being applied to the workpiece due to bending.

The first effect of the present invention is that it is no longer necessary to constantly store more than a certain amount of workpieces in the chute. The reason is that when positioning, the part of the chute where the stopper is located is also inclined, and the position is determined by the height of the falling blade due to the zero height of the workpiece to be positioned, so there is no need to worry about falling blades of other workpieces in the sheet. It is. The second effect is that, for the same reason as the first effect, it is possible to reliably position all the workpieces in the chute up to the last one.

Next, a second embodiment of the present invention will be described with reference to FIG. Because the shape of the workpiece 5 was uneven and the concave and convex jaws were intertwined with each other, and there were restrictions such as the direction in which the workpiece was to be chucked, the workpieces were intertwined as shown in Figures 1 and 2. If the workpiece cannot be pulled out in the direction of the arrow, it will be necessary to position only one workpiece at the positioning point. In that case, a workpiece separation mechanism is provided above the positioning point to separate the workpieces from one row and drop them to the positioning point. Since the separation mechanism has a certain degree of deviation above the positioning point, it is aligned with the joint point 8 to simplify the mechanism. In other words, if the swing seat portion 7 is kept in a horizontal state, the joint points are bent at a certain angle and the work cannot pass through. Therefore, the workpiece is stored above the joint point (Fig. 3 (a)). The swinging sheet is tilted while being pressed against a part of the workpiece so that it cannot fall, and only the lowest workpiece that was caught on the joint point is allowed to fall to the positioning point (Fig. 3 (b)). After tightening, return the swinging seat part to a horizontal position and release the work holder (Fig. 3 (c)).
reference). By this method, the separator 4t4 can be configured relatively easily.

Each time the working part pulls out the positioned workpiece, the third
As in the previous example, the operations from (a) to (c) in the figure can be repeated and workpieces can be replenished at any time regardless of the operating state of the chute.

[Brief explanation of drawings]

Figure 1 shows a work supply chute with a conventional structure.
FIG. 2 shows a first example of a work supply chute according to the present invention, and FIG. 3 shows a second example of the same. 1... Chute, 2... Workpiece input port, Total... Workpiece removal port, 4... Positioning stopper, 5... Workpiece, 6・・・・・・
・Fixed chute, 7... Swinging chute, 8...
...Joint point, 9...Work holding.

Claims (1)

[Claims] It is connected by a joint mechanism to a chute part of a certain length including the workpiece ejection opening at the lower end, or a chute part fixed in an inclined state above it, and swings up and down around the joint. A work supply chute for an automatic machine, characterized in that it can be changed to both inclined and horizontal states.