JP5680894B2 - Hopper for packaging machine - Google Patents

Description

The present invention relates to, for example, a hopper for a rotary packaging machine, and more specifically, when filling the packaging bags weighed by a measuring instrument one after another into packaging bags that are intermittently sent by a rotary packaging machine. The present invention relates to a funnel-shaped hopper for guiding the packaged item into the packaging bag so as not to spill.

A conventional hopper for a packaging machine has a cylindrical shape with a narrow bottom at the top so that an article can be filled from the bag mouth of a packaging bag sandwiched between a pair of clamp arms of a rotary packaging machine. In order to make it easier to insert a package to be dropped from a measuring instrument or the like as it goes, it is formed in a so-called funnel shape.

Japanese Patent Application Laid-Open No. H5-16928 JP 2005-343490 A

However, the conventional hopper for a packaging machine is filled with an object to be packaged when a packaging bag sandwiched between a pair of clamp arms of the packaging machine is located directly below the hopper for the packaging machine. Since it is small, it has a problem that it is difficult to fill a large amount of powdery or granular material to be filled in a short time.

In addition, when filling a cube or a rectangular parallelepiped package, there is a problem that it is difficult to fill because the lower part of the hopper is narrow.

The present invention has been made in order to solve the above-described problems. A hopper for a packaging machine that can quickly fill a large amount of powdered or granular objects to be packaged and can also fill a three-dimensional object to be packed is provided. It is intended to provide.

The present invention is a hopper for a packaging machine in which an article to be packaged is introduced from an upper opening , and the article to be packaged is introduced into a packaging bag from the lower part. The hopper body of the hopper for the packaging machine has a slightly wider upper part. A lower part of a substantially rectangular parallelepiped cavity and an upper part extending leftward and rightward and projecting forward are provided, and a shutter for temporarily holding an object to be packaged is provided in the inner lower part of the hopper body, and the upper part of the shutter is packaged. An introduction plate for guiding an object to the shutter side is provided, and a guide plate is provided at the front and rear portions of the lower part of the hopper body, and an opening and closing guide plate is provided at both the left and right sides. It is comprised so that it may pinch | interpose, When the said opening / closing guide plate is closed, the said guide plates arrange | positioned in the front-back direction approach, It is characterized by the above-mentioned.

The guide plates for guiding the article to be packaged arranged at the lower part and the front and rear parts of the hopper body are for guiding the article to be packaged into the packaging bag, and the lower part is inserted into the bag mouth of the packaging bag from above. The input package is guided into the packaging bag. On the other hand, the opening / closing guide plate can be opened and closed in the left-right direction by the operating mechanism, and the bag mouth can be widened widely by the opening / closing guide plate. The spatula provided in the filling section to widen the bag mouth when filling the article to be packaged, and the opening and closing guide plate ensure that the bag mouth opens wide and the article to be packaged can be filled smoothly in a short time. .

Furthermore, a shutter is provided in the inner and lower portions of the hopper body. The shutter temporarily puts the packaged article in the hopper, and when the packaging bag comes directly under the hopper for the packaging machine, the shutter opens to throw the packaged article into the packaging bag. . A bent lead-in plate is provided on the upper part of the shutter, and guides an object to be packaged introduced from the upper opening of the packaging machine hopper to the shutter side.

By the said structure, since the hopper for packaging machines of this invention can open a bag mouth largely, it can be filled with the powdery thing with many quantities, and the filling thing of a granular material smoothly. A three-dimensional package can be filled in the packaging bag. In addition, the shutter temporarily puts the package to be packed in the hopper, and when the packaging bag comes directly under the hopper for the packaging machine, the shutter opens and the package is loaded into the packaging bag. can do.

The front view at the time of the to-be-packaged article input of the hopper for packaging machines of Example 1 of this invention Side surface sectional drawing of the hopper for packaging machines of Example 1 of this invention The front view at the time of the to-be-packaged article input of the hopper for packaging machines of Example 2 of this invention

(Example 1 )
Next, the packaging machine hopper of Example 1 will be described with reference to FIGS. 1 and 2. FIG. 1 is a front view of a packaging machine hopper according to a first embodiment, and FIG. 2 is a side sectional view. The hopper main body 25 according to the first embodiment is vertically long, and includes a substantially rectangular parallelepiped lower portion 26 having a slightly wide upper portion 27 and an upper portion 27 that extends leftward and rightward and protrudes forward. A shutter 28 is provided in the lower part of the hopper body 25. The shutter 28 temporarily waits for the packaged material to be put in the hopper, and when the packaging bag 23 comes directly under the hopper 29 for the packaging machine, the shutter 28 is opened and the packaged material is placed in the packaging bag. 23.

In order to attach this shutter 28, a hinge 30 at the top of the shutter is attached to the center of the back surface of the hopper body 25, and a plate-like shutter 28 is formed on the hopper body 25 from a slit formed in a horizontal direction slightly below this hinge 30. It goes inside. The shutter 28 pivots about the hinge 30 to block an object to be packaged that passes through the hopper body 25.

The opening and closing of the shutter 28 is operated by an air cylinder 31. An arm 32 for attaching the air cylinder 31 is provided at the lower back of the hopper body 25, one end of the air cylinder 31 is pivotally supported on the arm 32, and a connection fitting 33 provided at the tip of the piston of the cylinder 31 is provided. The hopper body 25 enters the hopper body 25 through a through hole formed in the hopper body 25 and is connected to the central portion of the shutter 28. The air cylinder 31 is operated by a control device in synchronism with a packaging machine (not shown) to fill the packaging bag 23 with an article to be packaged.

A bent introduction plate 34 is provided on the shutter 28. The introduction plate 34 guides an object to be packaged introduced from the upper opening of the packaging machine hopper 30 to the shutter 28 side. The introduction plate 34 is bent to absorb an impact caused by dropping the packaged object, and the lower portion is supported by an elastic plate 35. In addition, the code | symbol 36 of drawing shows a press piece, This press piece 36 is pressed with an air cylinder (not shown), and a link mechanism is operated.

A trapezoidal guide plate 3 is fixed by a band 11 before and after the lower portion 26 of the hopper body 25 . The guide plate 3 is made of a thick sheet made of synthetic resin. The upper end of the guide plate 3 is sandwiched between the band-like bands 11 and fixed to the lower portion 26 of the hopper body 25 by left and right screws 12 and 12.

Wherein the right and left side portions of the lower portion 26 of the hopper main body 2, the opening and closing guide plate 5 is attached openably and closably by a hinge 14. This open / close guide plate 5 is made of metal, and as shown in the side view of FIG. 2, the width becomes narrower as it goes downward, and the lower end has a rounded triangular shape. The side wall plate is bent inward to form a shovel. The opening / closing guide plate 5 is configured to sandwich both sides of the guide plate 3 inside. That is, when closing the opening / closing guide plate 5, the opening / closing guide plate 5 comes into contact with the inside of the shovel-shaped opening / closing guide plate 5, and the guide plates 3 arranged in the front-rear direction approach each other. Therefore, when the open / close guide plate 5 is closed, the lower end portion of the hopper entering the packaging bag 23 is considerably smaller than the bag mouth. In the case of a flat packaged item or when the packaged item is tight with respect to the packaging bag 23, it is necessary to open the bag mouth widely, and the lower end of the small closed hopper enters the bag mouth and has a large effect of opening greatly. .

One plate of the hinge 14 for attaching the closing guide plate 5, as shown in FIG. 1, is attached to the lower portion 26 of the hopper body 25 by a screw 16. The other plate body is applied to the upper part of the opening / closing guide plate 5, and the back surface of the U-shaped link body 18 of the link mechanism 4 is brought into contact with the other plate body, and the other plate body , the opening / closing guide plate 5, and the link body 18. Are fixed together by screws 19.

In the link mechanism 4, a pair of link bodies 18, 18 having a narrow U-shape in plan view are opposed to each other, and a central portion is joined by a pin 20 so as to be bent. In this embodiment, a long hole 21 is formed at the tip of one link body 18, and a pin 20 protrudes from the other link body 18, and the link mechanism 4 is centered by combining the pin 20 and the long hole 21. It is comprised so that it may be bent upward in a part. In the link mechanism 4, when the pair of link bodies 18, 18 are bent at the center, the opening / closing guide plate 5 attached to the link body 18 opens and closes.

(Example 2)
FIG. 3 is a modification of the second embodiment. In the first embodiment, the hopper for the packaging machine is a hopper for the packaging machine of the second embodiment. The hopper 29 for the packaging machine includes a pair of hoppers 29 for the packaging machine. Can be filled. In the second embodiment, an air cylinder 37 is disposed in the middle of a pair of packaging machine hoppers 29. By pressing the pressing piece 36 with the air cylinder 37, the link mechanism 4 can be operated, and an opening / closing guide plate 5 can be opened and closed and the articles to be packaged can be filled simultaneously. In the above embodiment, the opening / closing guide plate 5 is opened / closed by the link mechanism 4, but this operating mechanism does not have to be a link mechanism, and the opening / closing guide plate may be opened / closed by a cam mechanism or by an electric motor.

INDUSTRIAL APPLICABILITY The present invention is useful as a packaging hopper that can quickly fill a large amount of powdered or granular objects to be packaged and can also fill a three-dimensional object to be packed.

3 Guide plate 4 Link mechanism 5 Opening / closing guide plate 11 Band-shaped band 12 Screw 14 Hinge 16 Screw 18 Link body 19 Screw 20 Pin 21 Long hole 23 Packaging bag 25 Hopper body 26 Lower 27 Upper 28 Shutter 29 Hopper 30 for packaging machine Hinge 31 Air Cylinder 32 Arm 33 Connecting bracket 34 Introduction plate 35 Elastic plate 36 Pressing piece 37 Air cylinder

Claims (1)

A hopper for a packaging machine that puts an article to be packaged from an upper opening and guides the article to be packaged into a packaging bag from the lower part,
The hopper body of the packaging machine hopper is composed of a substantially rectangular parallelepiped lower portion whose upper portion is slightly wide, and an upper portion that expands to the left and right and protrudes forward,
In the lower part of the hopper body, a shutter is provided for temporarily waiting for the article to be packaged, and an introduction plate for guiding the article to be packaged to the shutter side is provided on the upper part of the shutter.
A guide plate is provided at the front and rear of the lower part of the hopper body, and an open / close guide plate is provided on both the left and right sides.
The open / close guide plate is configured to sandwich both sides of the front and rear guide plates inside, and when the open / close guide plate is closed, the guide plates arranged in the front-rear direction approach each other ,
A hopper for a packaging machine.

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