JP2557369Y2 - Guide device for packaging sheets in a packaging machine - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a relatively small packaging machine which uses a continuous wrapping material sheet of a required width, folds this sheet in the flow direction and wraps the object to be wrapped while packaging the object. The present invention relates to a guide device for a packaging sheet.

[0002]

2. Description of the Related Art For example, in a medicine packaging machine in which powdered or granular medicines or tablets are divided into single doses based on a prescription and packaged, a powdered medicine or a tablet medicine to be packaged is divided by a required amount. Then, continuous medicine packaging paper (for example, polyethylene laminated on the inner surface side of glassine paper) is supplied to be folded in two, and then successively made into small bags sequentially from the forward direction, before the bag-making and packaging. It is configured such that the divided medicine is charged into the bag-shaped compartment at the position.

In order to correctly fold the continuous medicine packaging paper in the moving direction, a guide device is used which bends the medicine packaging paper so as to be gradually folded in the width direction. As a conventional example, for example,
No. 17470.

[0004]

In this conventional packaging machine, when a medicine, especially a fine powder medicine, is divided and packaged, as shown in FIG. When the packaging sheet 3 is continuously fed out and divided into bags while being made into a bag, the packaging sheet 3 is first bent in a U-shape to fold the packaging sheet 3 in two along the flow direction, and both side ends are bent. It is arranged so as to be guided as it is to the heat seal roller 7 to vertically seal the continuous packaging bag 8 serving as a partition.

[0005] For this purpose, the packaging sheet 3 is always transferred to the packaging portion by being brought into contact with the inner surface of the U-shaped slot 5a by the guide device 5 having the U-shaped slot 5a.
Static electricity is generated by friction with the guide device 5.
When the packaging sheet 3 is charged by the generation of the static electricity, the medicine handled by the packaging machine, particularly the medicine in the form of fine powder, is divided into one-package amount and is put into the portion formed in the packaging bag from the hopper 1. Part is scattered and adheres to the inner edge of the upper end of the packaging sheet 3 before the bag is made, and is transferred to the heat sealing roller 7 as it is. Since the heat sealing is performed while the fine powder adheres to the portion, complete sealing may not be performed. In addition, the generated static electricity has an adverse effect on electronic components used for control at a portion in contact with the packaged and packaged products, causing malfunctions, and taking measures to increase the product cost.

[0006] Such a problem of the generation of static electricity becomes more conspicuous when an attempt is made to increase the packaging speed of a packaging machine.

Therefore, in the present invention, in order to solve such a problem, a guide body having a U-shaped slot can positively eliminate static electricity generated at a contact portion with a packaging sheet. It is an object of the present invention to provide a packaging sheet guide device in a packaging machine.

[0008]

In order to achieve the above object, the present invention is directed to a roll-wrapping sheet of a required width which is fed out of a packaging machine, folded in half, and formed into a bag by a heat seal roller. In a guide device for a packaging sheet provided between the guide plates, a non-metallic guide plate body having an appropriate thickness is provided with a U-shaped slot having a required dimension.
A wide space is formed at the lower part of the U-shaped slot, and a brush made of conductive fiber is arranged at the exit side of the U-shaped slot,
The mounting member for the conductive brush is attached to the guide plate main body via a series of conductive plates, and a part of the conductive plate is attached to the body frame in a ground fault state by an attaching portion. .

[0009]

According to the present invention having the above construction, when the roll-wrapped packaging sheet having the required width is fed out, folded in two, and sent to the heat sealing roller portion, the U-shaped guide device is used.
Even if static electricity is generated on the surface of the packaging sheet by contact with the guide surface when being sent out through the U-shaped slot, a conductive brush made of conductive fibers is provided along the end surface of the U-shaped slot, and the conductive brush is provided. Since the grounding portion, which also serves as a mounting portion for the guide plate, is configured to eliminate static electricity from the outside of the fuselage through a conductive path formed by a conductive plate made of a metal plate, the packaging sheet is not charged. Also, there is no effect on the control unit during the movement of the package.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic view showing a bag-making section of a packaging sheet in a medicine packaging machine provided with a packaging sheet guide device of the present invention. FIG. 2 is a front view showing a main part of the guide device of the present invention. FIG. 3 is a rear view of FIG. FIG. 4 is a central longitudinal sectional view of FIG.

In the medicine dividing section of the packaging machine (not shown in FIG. 1), medicines divided into required amounts are put into the hopper 1 in a predetermined order, and a chute 1 'located immediately below the hopper 1.
Folded packaging sheet 30 being made from bag
A heat seal roller 7 is provided below the medicine injection position, and the heat seal roller 7 rotates and makes one bag at a time. The packaging sheet 30 having a predetermined width supplied to such a bag-making and an input section of the article to be packaged in front of the bag is supported by a roll-wound 31 rotatably supported at an appropriate position on the machine body. For example, it is guided to the heat seal roller 7 via a guide device 10 arranged so as to be folded in two by guide rollers 4 and 5 for giving tension and guiding at two places. They are received, wrapped and sent out sequentially. In the drawing, reference numeral 2 denotes an inlet opening / closing lid which is opened / closed by a command from a control mechanism of the packaging machine, and 6 denotes a packaged bag.
35 feeding rollers.

The above-described packaging sheet guide device 10 is shown in FIG.
As shown in FIG. 4, the guide plate main body 11 is formed of a non-metallic material (for example, bakelite, melamine resin, or the like) in a block shape, and has a U-shaped slot slightly longer than the width dimension of the packaging sheet 30 in which the entire length is handled. In the lower part of the U-shaped slot 12, a wide space 13 is formed.

On the exit side of the packaging sheet 30 (the back side of the guide plate body 11) when the U-shaped slot 12 and the lower space 13 are in use, conductive fibers 14 (synthetic fibers impregnated with copper ions) are used. So that the conductive brush 15 fixed at the base with the metal fitting of the conductive material is not obstructed from passing through the wrapping sheet 30 and can contact the outer surface of the wrapping sheet 30 in a wide range. It is supported and arranged by a brush mounting bracket 16.

Further, a conductive plate 17 made of a highly conductive metal, for example, a conductive metal plate made of aluminum is connected to and attached to the conductive brush 15 mounting portion of the guide plate body 11. A terminal end 17 'of the conductive plate 17 is opened to a mounting end face 11a of the guide plate main body 11, and a mounting screw sleeve 18 made of a conductive material embedded in the guide plate main body 11 is provided.
Are connected to each other by a bolt 19. The brush attachment 16 is also formed of a conductive metal.

[0015] The guide device 10 of the present invention having such a configuration is provided.
Is the guide plate body with respect to the predetermined position of the frame 40 of the fuselage.
The mounting end face 11a of 11 is fastened to the mounting screw sleeve 18 with the mounting bolt 41, and the mounting screw sleeve 18 serves as both the mounting of the guide device 10 to the body frame 40 and the static electricity elimination unit, thereby streamlining. Is planned.
It is preferable that the terminal of the ground wire 43 be connected to a fastening portion of the mounting bolt 41 to the frame 40 so as to be fixed at an inclination corresponding to the flow of the packaging sheet 30 as shown in FIG.

The wrapping sheet 30 is rolled in the same manner as in the prior art, and is moved at a required speed by a feed-out drive unit provided alongside the mounting portion of the heat seal roller 7. The wrapping sheet 30 is guided by the guide rollers 4 and 5 (see FIG. 1) provided in the middle so that the wrapping sheet 30 can be folded in two through the U-shaped slot 12 of the guide device 10 in a required tension state. Is done.

When the packaging sheet 30 passes through the U-shaped slot 12 of the guide device 10, the packaging sheet 30 comes into contact with the wall surface of the U-shaped slot 12 and is squeezed. In particular, as the packaging operation speed increases, the tensile force acting on the packaging sheet 30 increases, and the frictional force with the inner wall surface of the U-shaped slot 12 increases. Therefore, static electricity that is easily generated due to friction is generated on the outlet side of the U-shaped slot 12 because the polyethylene sheet is laminated on the contact side of the packaging sheet 30 in order to enhance the heat-sealing easiness during packaging and the moisture-proof effect. When the conductive brush 15 is in contact with the conductive brush 15, the charged static electricity is immediately transferred from the conductive brush 15 to the mounting bracket 16 and the conductive plate.
Fastening bolt screwed into the mounting screw sleeve 18 via 17
From 41, the electric power is discharged to the outside of the machine via the ground wire 43.

As a result, in the medicine feeding section in the section up to the heat seal roller 7 through the guide device 10, no static electricity is charged on the inner surface of the wrapping sheet 30 that is being folded in half. Even when the powder is used, the fine powder scattered at the time of introduction does not adhere to the sheet surface, and the sealing by the heat seal roller 7 can be reliably performed. Also,
The traveling packaging sheet 30 and the conductive brush 15 are arranged such that the synthetic fibers constituting the conductive brush 15 are relatively rigid, so that they can be spread over the outer surface of the packaging sheet 30. The contact is ensured, and the charged static electricity can be rapidly conducted and eliminated.

[0019]

According to the present invention, as described above, in the guide device for folding the packaging sheet in two, the static electricity generated due to the movement of the packaging sheet is immediately eliminated on the spot, so that the article to be packaged is removed. Can be packaged without any influence, and reliable packaging has become possible. In addition, the influence of the static electricity on the control unit can be eliminated, and it is possible to prevent a failure in the operation of the packaging machine.

[Brief description of the drawings]

FIG. 1 is a schematic view showing a bag making section of a packaging sheet in a medicine packaging machine provided with a packaging sheet guide device of the present invention.

FIG. 2 is a front view illustrating a main part of the packaging sheet guide device of the embodiment of the present invention shown in FIG. 1;

FIG. 3 is a rear view of FIG. 2;

FIG. 4 is a central longitudinal sectional view of FIG. 2;

FIG. 5 is a view showing a mode of supplying a packaging sheet to a bag making and packaging unit in a conventional packaging machine.

[Explanation of symbols]

 REFERENCE SIGNS LIST 7 heat seal roller 10 guide device 11 guide plate main body 11 a mounting end face of guide plate main body 12 U-shaped slot 13 space 15 conductive brush 16 conductive brush mounting bracket 17 conductive plate 18 mounting screw sleeve 30 packaging sheet 40 body frame 41 Fastening bolt 43 Earth wire

Claims (1)

(57) [Scope of request for utility model registration] 1. A packaging sheet guide device provided between a roll-wrapped packaging sheet of a required width in a packaging machine, which is fed out, folded in two, and made by a heat seal roller. The non-metallic guide plate body has the required dimensions U
A U-shaped slot is provided, a large space is formed below the U-shaped slot, and a brush made of a conductive fiber is arranged at an outlet side of the U-shaped slot. A guide device for a packaging sheet in a packaging machine, wherein the device is attached to the guide plate main body via a conductive plate, and a part of the conductive plate is mounted to a body frame in a ground fault state by a mounting portion.