JPH0454884Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial application field> The present invention is a paper support device for a packaging machine that lifts and lowers box-shaped contents using an elevator and wraps the contents against horizontally supported wrapping paper; Specifically, the hoistway of the elevator that lifts and lowers the box-shaped contents and the supply path of the wrapping paper are arranged perpendicularly, and the wrapping paper is fed towards the hoistway of the elevator, and then across the hoistway in the paper supply direction. A pair of support rods are horizontally installed so as to be movable toward and away from the wrapping paper supply path, and a shutter is provided to cover the paper contacting surface of the support rod located on the pasting side of the wrapping paper in an openable and closable manner. When the elevator is being supplied, both support rods are brought into contact with the supply path to open the shutter, and when the elevator is going up and down, both support rods are moved away from the supply path to close the shutter.

<Prior Art> Conventionally, as a paper support device for this type of packaging machine, as disclosed in Japanese Utility Model Publication No. 59-18966, for example,
When supplying wrapping paper, both support rods are brought into contact with the supply path to open the shutter, so that the paper contacting surfaces of these support rods contact the wrapping paper being supplied and guide it horizontally without loosening, allowing the elevator to move forward. When the box-shaped contents collide with the supplied wrapping paper and both sides of the wrapping paper are pulled inward as the box-shaped contents move up and down, both support rods are moved away from the supply path to close the shutter. Therefore, there is a device that prevents the glue application portion from passing over the shutter and adhering the glue to the paper contacting surface of the support rod.

<Problem to be solved by the invention> However, in the paper support device of such a conventional packaging machine, when the glue application part passes over the shutter, the surface facing the supply path of the shutter where the glue has closed The wrapping paper is temporarily stopped on the shutter when the contents are lifted and lowered by the elevator and is supported on a pair of latches. The transferred glue not only adheres to the surface of the contents and stains the contents, but also causes the contents and wrapping paper to stick together, causing the wrapping paper to tear and the contents to be damaged when the wrapping paper is opened. There are problems such as damage to the surface.

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

<Means for Solving the Problems> The technical means taken by the present invention to solve the above problems is characterized in that a serrated portion is provided on the surface of the shutter facing the supply path so as to protrude in the paper supply direction. It is something.

<Function> According to the above-mentioned technical means, the present invention moves both support rods toward the supply path to open the shutter when the wrapping paper is fed, so that the paper contacting surfaces of these support rods touch the wrapping paper being fed. Both support rods contact the paper and guide it horizontally without loosening, and as the elevator goes up and down, the box-shaped contents hit the supplied wrapping paper and both sides of the wrapping paper are drawn inward. By moving the shutter away from the supply path and closing the shutter, when the glue application part passes over the serrated part of the shutter, the glue comes into point contact only with the tip of the serrated part and adheres in a dotted manner. It is something.

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

In this embodiment, as shown in FIGS. 1 and 2, a box-shaped contents A is placed at the lower end of the hoistway 1a of the elevator 1.
At the same time, the paper feed mechanism 5 operates to horizontally feed the wrapping paper B one by one along the supply path B' toward the middle of the hoistway 1a, and as the elevator 1 rises, the upper surface of the content A Wrapping paper B supplied with
It is placed against the center of the body and wrapped around the body.

A pair of support rods 2,
2 are horizontally installed so as to be movable toward and away from the supply path B' of the wrapping paper B, and these support rods 2, 2 are formed in a thin plate shape extending in the paper supply direction and the vertical direction. The surface facing path B' is paper contact surface 2a,
It is set as 2a.

Then, when supplying the wrapping paper B, the support rods 2, 2
by moving the paper contact surfaces 2a, 2a closer to the supply path B' of the wrapping paper B, so that the paper contact surfaces 2a, 2a are positioned at approximately the same height as the lower surface of the supplied wrapping paper B, or higher than that. When the elevator 1 is going up and down, the support rods 2, 2 are moved down, and the paper contact surfaces 2a,
2a away from the supply path B' of the wrapping paper B.

Furthermore, tapered surfaces 2b, 2b that slope upward in the paper supply direction are formed on the upper surfaces of the proximal ends of the support rods 2, 2, respectively.

Moreover, above the support rods 2, 2, wrapping paper B
A pair of presser rods 3, 3 are installed horizontally in the paper supply direction with the supply path B' in between, and these presser rods 3, 3 are formed to be thicker than the left and right width dimensions of the support rods 2, 2, and their lower surfaces are A pair of presser surfaces 3a are protruded in the left and right direction with the paper contact surfaces 2a, 2a in between, and these presser surfaces 3a are placed at the same height as the paper contact surface 2a during upward movement. Or place it slightly lower than that.

Furthermore, tapered surfaces 3b, 3b that slope downward in the paper supply direction are formed on the lower surfaces of the proximal ends of the presser rods 3, 3, respectively.

Therefore, if the paper feeding mechanism 5 is operated with the support rods 2, 2 moved upward, the wrapping paper B will be transferred to the wrapping paper B.
Tapered surfaces 2 of supporting rods 2, 2 and presser rods 3, 3
Paper contact surfaces 2a, 2 along b, 2b, 3b, 3b
Smoothly enters between a and presser surface 3a...
These paper contact surfaces 2a, 2a and presser surface 3a . . . deform the paper into a curved shape and hold it in a substantially horizontal manner.

Further, a gluing mechanism 6 is provided near the paper feeding mechanism 5.
At the same time as the wrapping paper B is supplied by this gluing mechanism 6, glue 6a is applied to the inner surface of either the left or right edge of the wrapping paper B in a straight line in the paper supply direction.

A shutter 4 is provided near the support rod 2 located on the side of the glued part _B1 , and this shutter 4 is
A cover plate part 4a that protrudes toward the supply path B' side of the paper contact surface 2a is connected to the upper part of the plate body extending parallel to the support rod 2, forming an inverted L-shape on the side, and the lower end of the cover plate part 4a is connected to the support rod 2. It is swingably supported at a lower position of paper contact surface 2a and covers paper contact surface 2a in an openable and closable manner.

When the support rods 2, 2 move upward to bring the paper contact surfaces 2a, 2a closer to the supply path B' of the paper stack B, the cover plate 4a of the shutter 4 is moved up by the support rod 2.
When the paper contact surfaces 2a, 2a are moved away from the supply path B' of the wrapping paper B, the shutter 4 swings toward the support rod 2. The upper part of the paper contacting surface 2a is covered by the cover plate part 4a.

Also, the supply path of the cover plate 4a of the shutter 4 is
A serrated portion 4b is provided on the surface facing B' to protrude in the paper supply direction, and even when the shutter 4 is opened, a gap is formed between the tip of the serrated portion 4b and the supply path B'.
The supply of the wrapping paper B by the paper feeding mechanism 5 is not prevented.

The sawtooth portion 4b is formed by continuously forming triangular protrusions in the paper supply direction, and the tips thereof are connected to the gluing portion _B1.
Make point contact when passing.

Note that the sawtooth portion 4b is not limited to the shape shown in the figure, and may have any shape as long as it makes point contact with the glued portion _B1 , such as a plurality of triangular protrusions formed at appropriate intervals.

Furthermore, a pair of latches 7, 7 are provided inside the presser plates 3, 3 with the hoistway 1a of the elevator 1 in between.
These latches 7, 7 are installed horizontally so that they can be opened and closed, respectively.
By opening the hoistway 1a outward as the contents A rises in the elevator 1, the wrapping paper B is folded along the left and right sides of the contents A, and the wrapping paper B is folded inside the hoistway 1a immediately after the bottom of the contents A has passed. It closes toward the side to support the contents A.

Next, the operation of the paper support device of such a packaging machine will be explained.

First, when the wrapping paper B is fed by the operation of the paper feeding mechanism 5, both the supporting rods 2, 2 come into contact with the feeding path B', and at the same time, the shutter 4 is opened and the paper on the supporting rods 2, 2 is fed. The contact surfaces 2a, 2a contact and guide the wrapping paper B being supplied and are supported horizontally without loosening.

Thereafter, when the upper surface of the contents A hits the center of the wrapping paper B as the elevator 1 rises, and both sides of the wrapping paper B are drawn inward, both support rods 2, 2 are connected to the supply path B. At the same time as moving away from ′,
When the shutter 4 moves to close and the glue application portion _B1 passes over the serrated portion 4b of the shutter 4, the glue 6a comes into point contact only with the tip of the serrated portion 4b and adheres in a dotted manner.

When the next content A is packaged, even if the content A is supported on the left and right latches 7 and the wrapping paper B is temporarily stopped on the tip of the serrated portion 4b, the inner surface of the wrapping paper B is Glue 6a only adheres in dots,
Its adhesive strength is very weak.

In the embodiment described above, a pair of left and right presser surfaces 3a, 3a protruding from the lower surface of each presser rod 3, and a paper contacting surface 2a of the support rod 2 disposed between these presser surfaces 3a, 3a. Although the wrapping paper B is held between the two, the present invention is not limited to this, the presser rod 3 is divided into two in the left and right direction, and the presser surface 3 is
a, 3a may be separated, or only one presser surface 3a may be formed on the lower surface of the presser rod 3, and this presser surface 3a may be separated.
A pair of paper contact surfaces 2a, 2 are sandwiched in the left and right direction.
It is also possible to form a.

Furthermore, in the latter case, a pair of left and right paper contact surfaces 2
Needless to say, the shutter 4 is provided so as to simultaneously cover both a and 2a.

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

When supplying wrapping paper, both support rods are brought into contact with the supply path to open the shutter, so that the paper contacting surfaces of these support rods contact the wrapping paper being supplied and guide it horizontally without loosening, allowing the elevator to move forward. When the box-shaped contents collide with the supplied wrapping paper and both sides of the wrapping paper are pulled inward as the box-shaped contents move up and down, both support rods are moved away from the supply path to close the shutter. When the glued part passes over the serrated part of the shutter, the glue comes into point contact only with the tip of the serrated part and adheres in a dotted manner, so the adhesion of glue to the shutter can be minimized. .

Therefore, when the glue application part passes over the shutter, the glue adheres to the entire surface of the closed shutter facing the supply path, whereas the dots of glue attached to the shutter cover the inner surface of the wrapping paper. Even if it is transferred to a paper and packaged as it is, the adhesive force is very weak and the surface of the contents will not be soiled, and when the wrapping paper is opened, the wrapping paper will not tear or the surface of the contents will be damaged.

[Brief explanation of the drawing]

Fig. 1 is a vertical side view of the paper support device of a packaging machine showing an embodiment of the present invention, showing the state before the elevator lifts up, and Fig. 2 shows the state where the top surface of the contents hits the wrapping paper as the elevator lifts up. FIG. 3 is a longitudinal side view showing the state when the elevator has finished lifting the contents, and FIG. 4 is an enlarged perspective view of the shutter. A... Contents, B... Wrapping paper, B'... Supply path,
B ₁ ...Gluing part, 1...Elevator, 1a...Hoistway, 2...Support rod, 2a...Paper contact surface, 4...
Shutter, 4b... Serrated part.

Claims (1)

[Scope of utility model registration request] The hoistway of the elevator that lifts and lowers the box-shaped contents and the supply path of the wrapping paper are arranged orthogonally, and the wrapping paper is fed toward the hoistway of the elevator, and a pair of A support rod is installed horizontally so that it can move toward and away from the wrapping paper supply path, and a shutter is provided to cover the paper contacting surface of the support rod located on the pasting side of the wrapping paper so that it can be opened and closed, thereby supplying the wrapping paper. At the same time, both support rods are moved toward the supply path to open the shutter.
In a paper support device for a packaging machine that closes a shutter by moving both support rods away from a supply path when an elevator goes up and down, a serrated portion is provided on a surface of the shutter that faces the supply path so as to protrude in the paper supply direction. A paper support device for a packaging machine featuring: