JPH0414326Y2 - - Google Patents

Description

[Detailed Description of the Invention] Purpose of the Invention (Field of Industrial Application) This invention relates to a positioning device for an article transferred from an article supply device onto an article holder in, for example, a fresh food packaging machine.

(Prior Art) Conventionally, if an article is not accurately positioned from an article supply device to a predetermined position on an article holder, when the article holder rises toward the packaging section of a packaging film conveyor, the packaging film conveyor The product was not accurately positioned at the packaging standard position of the device, which could have an adverse effect on the packaging condition.

Therefore, a stopper member is usually installed on the article holder. In the old days, this stopper member was immovably fixed at a predetermined position on the article holder, but now the stopper member is given elasticity by a spring, so that it can absorb the shock when the article comes into contact with the stopper member. is decreasing.
In this stopper member, the article is positioned at the most pushed position against the elasticity of the spring.

(Problems to be Solved by the Invention) However, the stopping position of the article when it comes into contact with the stopper member may vary depending on the elastic force of the spring and the weight of the article. In other words, if the elastic force of the spring is too small relative to the weight of the item, it will not be possible to prevent the item from bouncing back, and if it is too large, the stopper member will stop without being pushed sufficiently. It was not possible to accurately position the item at a predetermined position on the item holder. Therefore, it was necessary to adjust the elastic force of the spring depending on the weight of the item.

However, the structure for attaching the spring to the stopper member is complicated, and the structure of the means for adjusting the elastic force of the spring is even more complicated. Furthermore, since springs always have a repulsive force, it is difficult to completely eliminate bouncing of objects.

Therefore, the present invention uses a weight instead of a spring as a biasing means for the stopper member, thereby simplifying the structure and preventing the object from bouncing back.

Structure of the invention (means for solving problems) The present invention is installed at the terminal end of an article supply device for transporting articles, and is movable up and down with respect to the packaging section of a packaging film conveyance device. In the article positioning device, a stopper member with which the article transferred from the article supply device to the article pedestal comes into contact corresponds to the pedestal of the article supply pedestal device on the opposite side of the article feeding device. supporting the stopper member so as to be rotatable along the transport direction of the article;
A weight that provides a rotational moment in a direction that resists the contact force of the article and a means for adjusting the rotational moment are attached to the stopper member, and an engaging member is attached to the stopper member in the rotational direction when the article is in contact with the object. A guide member with a long hole that guides the engaging member is placed on the side of the stopper member in the rotational direction when it comes into contact with the article, thereby regulating the permissible rotational range of the stopper member and controlling the rotational range of the stopper member. The gist thereof is that a rotation range adjusting means for adjusting the allowable range of movement is provided so as to be located on the rotation locus of the stopper member.

(Function) Then, when the item W is transferred onto the pedestal 10,
The article W contacts the stopper member 12, and due to the contact force, the stopper member 12 rotates against the rotational moment and stops. At this point, the article W is also stopped and positioned. When the stopper member rotates, the engagement member of the stopper member is guided by the elongated hole of the guide member, so that the contact surface of the stopper member does not tilt. Note that the rotation moment of the stopper member is varied by the rotation moment adjusting means.
When the rotation range of the stopper member is adjusted by the rotation range adjusting means, the allowable rotation range of the stopper member is changed.

(Example) Hereinafter, a first example of the present invention will be described with reference to FIGS. 1 to 6.

Regarding the product supply device 1 (only a portion is shown),
A drive roller 3 is installed inside the left and right frames 2 extending both inside and outside the packaging machine, and a plurality of endless conveyor rollers are installed between the drive roller 3 and an outside driven roller (not shown). Belt 4 is stretched around it. A plurality of brackets 6 are fixed to a connecting plate 5 installed between both frame bodies 2 inside the drive roller 3 so as to protrude inwardly, and a driven pulley supported at the tip of the brackets 6 is attached. A plurality of endless round conveyance belts 8 are stretched between the drive roller 7 and the drive roller 3.

Conveyor round belt 8 at the end of this article supply device 1
An article pedestal device 9 having a large number of pedestals 10 is installed so as to be movable up and down relative to a packaging section (not shown) of a packaging film conveying device. When the article pedestal device 9 is in the lowered position as shown, the pedestal 10 is positioned between the round conveyor belts 8. A stopper member 12 of an article positioning device 11 according to an embodiment of the present invention corresponds to the opposite side of the article feeding device 1 on the pedestal 10.

Then, as shown by the imaginary line in FIG.
is transferred by the article supply device 1 and reaches the round belt 8 at the terminal end thereof, and is placed on the pedestal 10 of the article pedestal device 9.
It looks like it's on top.

Next, the article positioning device 11 will be explained in detail.

The stopper member 12 has a plate shape, and is rotatably supported along the transport direction A of the article W by hinges 14 on both left and right sides of a mounting plate 13 as a guide member fixed to the machine frame 1a. It is in a suspended state corresponding to the stand 10. A weight support rod 15 is extended through the through hole 13a of the mounting plate 13 on both left and right sides of the lower end of the stopper member 12, and a threaded rod 16 as a rotation moment adjustment means is erected on the tip end of the weight support rod 15. There is. A disc-shaped weight 17 is screwed onto the threaded rod 16, and is prevented from coming off between nuts 18 screwed onto the threaded rod 16. A locking rod 19 as an engaging member is fixed to the center of the stopper member 12 and is inserted into a long hole 20 formed in the mounting plate 13. A head 19a serving as rotation range adjusting means is screwed onto the tip of the locking rod 19, and is configured to be locked in the elongated hole 20. Contact rods 21 serving as rotation range adjusting means are screwed onto both left and right sides of the mounting plate 13 so as to be able to contact the stopper member 12. Therefore, the stopper member 12 has its own weight and weight 1.
7, the locking rod 19 rotates in a direction away from the mounting plate 13, and always stops at a position where the head 19a of the locking rod 19 is locked in the elongated hole 20 of the mounting plate 13. On the other hand, the stopper member 1
2 is adapted to stop at the position where it contacts the contact rod 21 when it rotates toward the mounting plate 13 due to contact with the item W. The permissible rotation range of the stopper member 12 is determined by adjusting the positions of the head 19a of the locking rod 19 and the abutment rod 21.

In particular, regarding the weight 17, the weight support rod 15
Remove the nut 18 from the threaded rod 16 and remove the weight 17.
By changing , the rotation moment of the stopper member 12 can be adjusted. (Rotating Moment Adjustment Means) Now, as shown in the figure, when the article pedestal device 9 is lowered and its pedestal 10 is located between the round belts 8 at the terminal end of the article feeding device 1, the article W is placed on the pedestal. 10, the article W comes into contact with the stopper member 12, and due to the contact force, the stopper member 12 rotates toward the mounting plate 13 against the rotational moment and stops. At this point, the article W is also stopped and positioned. The article W positioned on the pedestal 10 rises together with the article pedestal device 9 toward the packaging section of the packaging film transport device.

In particular, in this embodiment, by changing the weight 17 provided on the stopper member 12, the rotational moment given to the stopper member 12 can be adjusted according to the article W.
The impact generated when 2 and the item W come into contact with each other is alleviated, the item W no longer bounces, and the item W can be accurately positioned at a predetermined position on the item holder 10.
In addition, since the weight 17 is used as a biasing means for the stopper member 12, the structure is simpler than in the case of using a spring, and there is no repulsive force, preventing the item W from bouncing back.

In addition to the above-mentioned embodiments, the rotational moment adjustment means for the stopper member 12 may be used, for example, as in the second embodiment shown in FIG.
2 is fixed to the rotation center shaft 14a of the hinge 14, and the weight 17 is movably fitted to the rod 22 from one end of the rotation center shaft 14a, and can be fixed at any position with a set screw 23. 17 relative to the rod 22 and the weight 17 is attached to the hinge 14.
The rotation moment may be changed by making the distance between the rotation center axis 14a and the rotation center axis 14a adjustable.

Effects of the invention In short, according to the invention, since the weight 17 is used instead of a spring as the biasing means for the stopper member 12, it is possible not only to accurately position the item W at a predetermined position on the item holder 10, but also to Compared to the case where a spring is used, the structure is simpler and the item W can be prevented from bouncing back.

Furthermore, in the present invention, when the rotation moment of the stopper member is made different, or when the contact force against the stopper member changes depending on the size of the item, the permissible rotation range of the stopper member is made different, so that the stopper member can be adjusted. It is possible to restrict the amount of rotation more than necessary. Furthermore, since the engaging member of the stopper member is guided by the elongated hole of the guide member when the stopper member rotates, an excellent effect is achieved in that the abutment surface of the stopper member is not tilted.

[Brief explanation of the drawing]

FIG. 1 is a partial plan view showing the article positioning device according to the first embodiment installed in correspondence with the article holder device, FIG. 2 is a partial side view of the same, and FIG. 3 is the back side of this article positioning device. Figure 4 is a cross-sectional view taken along the line X-X in Figure 3, Figure 5 is a cross-sectional view taken along the Y-Y line in Figure 3, Figure 6 is a cross-sectional view taken along the Z-Z line in Figure 3, and Figure 7 is a cross-sectional view taken along the line Z-Z in Figure 3. It is a sectional view of an article positioning device showing a second example. Item supply device...1, Item pedestal device...9, Item positioning device...11, Stopper member...1
2. Weight...17. Item...W.

Claims (1)

[Scope of Claim for Utility Model Registration] An article holder device 9 that is installed corresponding to the terminal end of the article supply device 1 for transferring the article W and that can be raised and lowered relative to the packaging section of the packaging film transport device. A stopper member 12 on which the article W transferred from the article supply device 1 to the article pedestal 10 comes into contact is attached to the pedestal 10 .
In the article positioning device, the stopper member 12 is supported rotatably along the transport direction A of the article W, and the stopper member 12
A weight 17 that applies a rotation moment in a direction that resists the contact force of the item W and a rotation moment adjustment means 16 are attached to the unit, and the item W is moved in the rotation direction when the item W is in contact with the stopper member 12. A long hole 20 through which the engaging member 19 is projected and guides the engaging member 19.
A guide member 13 equipped with a guide member 13 is disposed on the rotation direction side of the stopper member 12 when it comes into contact with the article W to regulate the permissible rotation range of the stopper member 12, and
Rotation range adjusting means 1 for adjusting the permissible rotation range
A device for positioning an item on a supply tray in a packaging machine, characterized in that 9a and 21 are provided so as to be located on the rotation locus of the stopper member 12.