JPS6340724B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an apparatus for extracting a predetermined number of pieces from a regularly stacked body of rod-shaped members such as pencils and youth cans and packing them into boxes.

Structure of conventional example and its problems When extracting a certain number of rod-shaped members from a regularly stacked body of this type using a push plate and packaging them in a box, when the stacked bodies to be extracted have multiple stages, the dimensional error in the diameter of the rod-shaped members causes them to be extracted. Quantities may vary. Such a discrepancy in quantity is inconvenient for management. Furthermore, when extracting the material, the alignment of the stack above it must not be disturbed.

Purpose of the Invention The present invention is an apparatus that can always extract a certain number of rod-shaped members from a regularly stacked body and pack them into boxes, and can continuously and automatically pack the extracted pieces into boxes without disturbing the alignment of the upper stacked bodies. The purpose is to provide

Configuration of the Invention The boxing device of the present invention includes a pair of guide plates that guide a stack of rod-shaped members stacked in a close-packed manner;
a receiving plate that moves up and down between the guide plates and places the laminate on the upper surface; a pushing plate that pushes out a certain number of the laminates on the receiving plate from between the guide plates into the box; and a pushing plate that moves forward together with the pushing plate to push out. and a support plate that supports the upper layer of the layered product, and after the pushing plate returns, the support plate is raised to just below the support plate, and then the support plate is retreated to support the layered product on the support plate. It is characterized in that it is configured to be moved upward, and that projections are provided at predetermined pitches on the upper surfaces of the receiving plate and the supporting plate, and on the lower surface of the push plate.

DESCRIPTION OF EMBODIMENTS FIGS. 1 and 2 are front views showing the main parts of the apparatus of the present invention, and FIG. 3 is a side view showing its operation.

In these figures, 1 represents a rod-shaped member, hereinafter simply referred to as a rod. Reference numerals 2 and 3 denote guide plates for guiding the bars stacked in a close-packed manner as shown in the figure, and the bars 1 are regularly aligned and stacked on the receiving plate 4 by an alignment device provided above the guide plates. The receiving plate 4 has a plurality of protrusions 5 at a predetermined pitch on its upper surface, and descends in sequence according to the amount of bar material supplied between the guide plates 3 and 4. 6 is an air cylinder that moves the receiving plate 4 up and down.

FIG. 2 shows a state in which the receiving plate 4 has reached the bottom dead center, and at this point, the push plate 7 and support plate 8 for pushing out a predetermined number of bars from the rear of the bar are placed between the guide plates 3 and 4. are beginning to invade. Push plate 7
has protrusions 9 at a predetermined pitch on its lower surface, and the concavities and convexities thereof correspond to the concavities and convexities of the receiving plate 4.
On the other hand, the support plate 8 is provided with protrusions 10 so as to have the same unevenness as the receiving plate 4.

First, the boxing operation will be explained with reference to FIG.

A shows a state in which the receiving plate 4 has reached the bottom dead center. 1
1 and 12 are guides 3 and 4 located above the support plate 8.
This is a board located at the front and back of the bar to prevent the bar from falling back and forth. Reference numeral 13 denotes a box holder which can rotate about a shaft 14 as a fulcrum, and is shown in the figure holding a box 15 for storing bars and waiting in front between the guide plates 3 and 4. 16 is an air cylinder for discharging the box 15.

b, the pushing plate 7 and the supporting plate 8 move forward to push out a predetermined number of bars from above the receiving plate 4 and pack them into the box 15;
A plate 8 supports the upper bar of the bar pulled out at the same time.
Indicates the state of being supported by.

Next, at c, the push plate 7 returns to its original position, but the support plate 8 is retracted halfway and still supports the stack of bars. On the other hand, the box receiver 13 is rotated to the box ejection position, and the box 15 is pushed out by the air cylinder 16.

At step d, the receiving plate 4 rises to the top dead center directly below the supporting plate 8, while a new empty box is set on the box receiving body 13.

Next, at e, the support plate 8 retreats, and the stack of bars placed on the support plate is transferred onto the receiving plate 4. Meanwhile, the box receiver 13 returns to the position for receiving the bar.

By the above-mentioned operations a to e, a certain number of the bars that are aligned and supplied between the guide plates 3 and 4 are packed into boxes one after another.

Next, the receiving plate 4, the pushing plate 7, and the supporting plate 8 will be explained in detail.

As shown in Figure 2, if the height of the stack of bars pushed out by the push plate 7 and support plate 8 is A, the diameter of the bar is a, and the number of stages is n, then A=(a×n)+a/2 becomes.

Here, since normal products have tolerances,
For example, if a=4.0±0.03mm and n=64,
Dimension A has a maximum value of 259.94 mm and a minimum value of 256.07 mm.

The difference between the two is 3.88 mm, which is approximately the diameter of the bar 1
This is the main dimensional difference, and when pushing out a stack of bars with the push plate and support plate, it will be pushed one step more or one step less.

When the bars to be extruded and the bars that are not to be extruded are separated by a straight line in this way, if the difference in A dimension is a/2 or more, it is not possible to always keep a constant number of bars to be extruded.

In the present invention, the above-mentioned disadvantages are eliminated by providing the projections 5 and 10 on the upper surfaces of the receiving plate 4 and the support plate 8, and the projection 9 on the lower surface of the push plate 7.

Here, the pitch P of these protrusions corresponds to the distance between the centers of adjacent bars in the same row in the stack of bars, and P = √3/2a x 2, and the distance between the receiving plate 4 and the supporting plate 8 is The protrusions in are in the same phase, the protrusions on the push plate 7 are provided with a phase shift of P/2, and the height h of the protrusions satisfies h≦a/2.

Effects of the Invention As described above, according to the present invention, it is possible to pack a fixed quantity of stacked rod-shaped members in multiple stages in just the right amount.

[Brief explanation of the drawing]

Fig. 1 is a front view of the main parts showing an embodiment of the device of the present invention, Fig. 2 is a front view showing the relationship between the receiving plate, push plate, and support plate, and Fig. 3 is a side view showing the boxing operation. be. 1... Rod-shaped member, 2, 3... Guide plate, 4...
Receiving plate, 7... Pushing plate, 8... Supporting plate, 5, 9,
10... protrusion, 13... box receiver, 15... box.

Claims (1)

[Claims] 1. A pair of guide plates that guide a stacked body in which rod-shaped members are arranged in a close-packed manner, and a receiving plate that moves up and down between the guide plates and places the stacked body on its upper surface;
A pushing plate that pushes out a certain number of the laminates on the receiving plate from between the guide plates into the box, and a supporting plate that moves forward together with the pushing plate and supports the upper laminate of the laminates being pushed out, the pushing plate After the plate returns, the receiving plate is raised to just below the supporting plate, and then the supporting plate is retreated, and furthermore, on the upper surfaces of the receiving plate and the supporting plate, there are arranged adjacent rod-shaped members in the same row in the laminate. Protrusions with a pitch corresponding to the distance between the centers and a height equal to or less than the radius of the rod-shaped member are provided, and on the lower surface of the push plate are provided protrusions with the same pitch as the projections and shifted by 1/2 phase. A boxing device for rod-shaped members, characterized in that a protrusion with a height equal to or less than the radius is provided.