JPH0454885Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial field of application> The present invention is a wrapping device for a packaging machine that lifts and lowers the contents of a box using an elevator and wraps the contents against horizontally supported wrapping paper. The wrapping paper supply path and the elevator hoistway are arranged perpendicularly, the wrapping paper is fed toward the elevator hoistway, and a pair of guide plates are placed across the hoistway in the left-right direction perpendicular to the paper supply direction. The box-shaped contents are moved along both guide plates as the elevator goes up and down, and are rolled against the wrapping paper and pasted with glue attached to the inner surface of the left and right side edges of the wrapping paper. related to things.

<Prior Art> Conventionally, as a body wrapping device for this type of packaging machine, for example, as disclosed in Japanese Utility Model Publication No. 59-18966,
Support rods are horizontally installed close to and parallel to each other on the outside in the left and right direction of the guide plate, and these support rods are supported so as to be movable towards and away from the supply path of the wrapping paper, and also on the side where the wrapping paper is pasted. A shutter is provided that can open and close both the paper contacting surface of the supported support rod and the tip end surface of the guide plate, and when the wrapping paper is supplied, both support rods are brought into contact with the supply path to open and operate the shutter. The paper contacting surface of the support rod abuts and guides the wrapping paper being supplied and supports it horizontally without loosening, and as the elevator goes up and down, the box-shaped contents hit the supplied wrapping paper and the wrapping paper is removed. When both sides are drawn inward, by moving both support rods away from the supply path and closing the shutter, the gluing section passes over the shutter and the glue contacts the paper contact surface of the support rod. There is a type that prevents it from adhering to the tip end surface of the guide plate.

<Problem to be solved by the invention> However, in the body wrapping device of such a conventional packaging machine, each time the glued part passes over the shutter, it adheres to the surface facing the supply path of the closed shutter. As it gradually enlarges, the enlarged glue collapses and becomes granular due to long-term use, and the granular glue easily enters and adheres to the inner surface of the guide plate.
The glue that enters the hoistway not only prevents the contents from going up and down, adheres to the surface of the contents and stains the contents, but also causes the wrapped contents and wrapping paper to stick together, causing the wrapping paper to become untidy. When opened, there are problems such as the wrapping paper being torn and the surface of the contents being damaged.

In view of such conventional circumstances, the present invention aims to minimize the adhesion of glue to the guide plate.

<Means for Solving the Problems> The technical means taken by the present invention to solve the above problems is to move the glue guiding guide close to and parallel to the outside in the left and right direction of the guide plate located on the glued side of the wrapping paper. The distal end surface of the glue guiding guide facing the supply path is placed farther from the supply path than the distal end surface of the guide plate, and the distal end surface of the glue guiding guide and the distal end surface of the guide plate are placed horizontally on the paper supply path. It is characterized by being formed in a sawtooth shape that protrudes at the same pitch in the direction and with the same phase in the left and right directions.

<Function> According to the above-mentioned technical means, the present invention has a sawtooth shape that protrudes at the same pitch in the paper supply direction and in the same phase in the left and right direction on the tip surface of the glue guiding guide and the tip surface of the guide plate that are away from the supply path. By forming each
As the elevator moves up and down, the contents hit the wrapping paper and the left and right sides of the wrapping paper are drawn inward, so the glued part of the wrapping paper approaches and comes into contact with the serrated part of the glue guiding guide. , only the glue that comes into contact with the apex of this serrated portion is scraped off, and then this scraped portion passes through point contact with the apex of the serrated portion of the guide plate.

<Example> Hereinafter, an example of the present invention will be described based on the drawings.

In this embodiment, as shown in FIGS. 1 to 3, a box-shaped contents A is placed at the lower end of the hoistway 1a of the elevator 1.
The paper feed mechanism 6 operates to horizontally feed the wrapping paper B one sheet at a time along the supply path B' toward the middle of the hoistway 1a, and the gluing mechanism 5 feeds the wrapping paper B horizontally. Glue 5a is applied to the inner surface of one end in the left and right direction perpendicular to the paper supply direction in a straight line in the paper supply direction,
After the upper surface of the contents A hits the center of the supplied wrapping paper B as the elevator 1 rises, it is moved in either the left or right direction and wrapped around the body.

A pair of guide plates 2 and 3 are provided facing each other in the left and right direction across the hoistway 1a of the elevator 1, and when the elevator 1 operates, the contents A are raised along the inner surfaces of both guide plates 2 and 3, and the guide Wrapping paper B is fed to the end surface of plates 2 and 3 facing the supply path B'.
Place it at approximately the same height as the bottom surface of.

The guide plate 2 of the above-mentioned wrapping paper B is located on the side of the gluing part _B1 , and is formed into a thin plate extending in the paper supply direction and the vertical direction. By extending to the lower end position, it has a stopper function to stop the contents A conveyed to the lower end of the hoistway 1a at a predetermined position on the upper surface of the elevator 1.

The serrated portion 2a has triangular protrusions formed continuously in the paper supply direction, and the apexes of these protrusions are shifted in the paper supply direction from an intermediate position of each protrusion in the paper supply direction.

A glue guiding guide 4 is placed close to and parallel to the outside of the guide plate 2 in the left and right direction, and the tip end face of the glue guiding guide 4 facing the supply path B' is supplied from the leading end face of the guide plate 2. It is disposed apart from the path B', and in the illustrated example, it is integrally fixed to the guide plate 2 at an appropriate distance.

Serrated portions 4a are formed on the distal end surface of the glue guiding guide 4, and the apex positions of the serrated portions 4a are all projected to the same height position, and the apex positions of the serrated portions 2a of the guide plate 2 are and protrude at the same pitch in the paper supply direction and in the same phase in the left and right directions.

In addition, the other guide plate 3 is formed as a thin plate similar to the guide plate 4, and its tip surface is formed horizontally, and the lower part is bent toward the upstream side in the direction of conveying the contents A. It guides the contents A to be transported to the lower end of the hoistway 1a.

Further, on the left and right outer sides of the guide plates 2 and 3, support mechanisms 7 and 7 are provided on the upper and lower sides, respectively, for sandwiching the supplied wrapping paper B from above and below and stretching it horizontally on the guide plates 2 and 3. When the content A moves upward as the elevator 1 rises and the top surface of the content A hits the center of the wrapping paper B, these support mechanisms 7, 7 move in the vertical direction, respectively. It opens and releases the wrapping paper B.

Further, near the lower support mechanism 7 located on the side of the gluing section _B1 , a shutter 8 is provided to cover the paper contacting surface in an openable and closable manner in conjunction with the vertical movement of the support mechanism 7.

Next, the operation of the body wrapping device of such a packaging machine will be explained.

First, the wrapping paper B is supplied by the operation of the paper feeding mechanism 6 and is supported horizontally by the supporting mechanisms 7, 7, and then, as the elevator 1 rises, the top surface of the contents A hits the center of the wrapping paper B. As a result, both sides of the wrapping paper B are drawn inward.

As a result, wrapping of the contents A begins along the upper surface and both sides, and the contents A are moved by the elevator 1.
When the wrapping paper B is moved in either the left or right direction after it has finished rising, the inner surface of one side end of the wrapping paper B will be exposed to the shutter 8.
From the top surface, it passes above the glue guiding guide 4 and moves inward while being supported on the tip end surface of the guide plate 2, and finally the glue application part _B1 passes over the top surface of the shutter 8.

When the glued part B ₁ finishes passing over the shutter 8, it hangs down due to the tension of the wrapping paper B, approaches the glue guiding guide 4, is supported by making point contact with the serrated part 4a, and is supported by the serrated part 4a. Only the glue 5a that contacts the apex of the shaped portion 4a is scraped off, and then the scraped glue 5a passes through the apex position of the sawtoothed portion 2a of the guide plate 2 and reaches the apex of the sawtoothed portion 2a. glue 5a
There is no adhesion, and even if it does, the amount is extremely small.

Note that the serrated portion 4a is not limited to a triangular protrusion formed continuously in the paper supply direction, and each protrusion may have any shape.

In addition, the lower end of the guide plate 2 is extended to the lowering position of the elevator 1 to provide a stopper function.
The present invention is not limited to this, and a stopper may be provided separately from the elevator 1 at the downstream end in the transport direction of the contents A.

<Effects of the Invention> Since the present invention has the above configuration, it has the following advantages.

By forming the distal end surface of the glue guiding guide and the distal end surface of the guide plate, which are away from the supply path, into sawtooth shapes that protrude at the same pitch in the paper supply direction and in the same phase in the left and right directions, the contents can be easily removed as the elevator goes up and down. As the paper hits the wrapping paper and both left and right sides of the wrapping paper are drawn inward, the glued portion of the wrapping paper approaches and contacts the serrated portion of the glue guiding guide, and the apex of this serrated portion Only the abutting glue is scraped off, and then this scraped portion passes through point contact with the apex of the serrated portion of the guide plate, so that adhesion of glue to the guide plate can be minimized.

Therefore, compared to the conventional method in which the glued part adheres to the surface facing the supply path of the closed shutter each time it passes over the shutter and gradually enlarges, the glue penetrates into the inner surface of the guide plate and is not attached. In addition, the wrapped contents and the wrapping paper are stuck to each other, and when the wrapping paper is opened, the wrapping paper is There will be no tearing or damage to the surface of the contents.

[Brief explanation of the drawing]

Fig. 1 is a vertical side view of the wrapping device of a packaging machine showing an embodiment of the present invention, showing the state before the elevator lifts, Fig. 2 is a cross-sectional plan view of the same, and Fig. 3 shows the end of lifting of the contents by the elevator. FIG. 4 is an enlarged perspective view of the main parts. A... Contents, B... Wrapping paper, B'... Supply path,
B ₁ ...Glued part, 1...Elevator, 1a...Hoistway, 2...Guide plate, 2a...Serrated part, 3...
...Guide plate, 4...Glue guiding guide, 4a... Serrated portion.

Claims (1)

[Scope of utility model registration request] The wrapping paper supply path and the elevator hoistway are arranged orthogonally, the wrapping paper is fed towards the elevator hoistway, and a pair of guide plates are placed across the hoistway in the left and right direction perpendicular to the paper feeding direction. Packaging that is placed facing each other, and as the elevator goes up and down, the box-shaped contents are transferred along both guide plates, wrapped against the wrapping paper, and pasted with glue attached to the inner surface of the left and right side edges of the wrapping paper. In the body wrapping device of the machine, a glue guiding guide is placed horizontally and close to the outside in the left-right direction of the guide plate located on the side of the pasting part of the wrapping paper, and the leading end face of the pasting guide facing the supply path is The tip of the guide plate is placed away from the supply path, and
A body winding device for a packaging machine, characterized in that the end surfaces of the glue guiding guide and the guide plate are formed in a sawtooth shape that protrudes at the same pitch in the paper supply direction and in the same phase in the left and right direction.