JP2549884Y2 - Sealing machine - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sealing machine applicable to a bag filling machine and the like.

[0002]

2. Description of the Related Art FIG. 2 is a plan view of a conventional sealing machine and a side view thereof.
In the figure, 1 is a sealing material, 2 is a vertical sealing roll, 3 is a horizontal sealing roll, and the horizontal sealing roll 3 is provided rotatably around an axis installed at right angles to the traveling direction of the sealing material 1. 1 is also arranged in parallel with the axis of the horizontal seal roll 3 to constitute a sealing machine. In this sealing machine, the sealing material 1 is vertically sealed by a vertical sealing roll 2 while moving downward from above. On the other hand, the horizontal seal roll 3 rotates in accordance with the speed of the sealing material 1, and heat-presses on the pressing surface 4 to perform the horizontal seal 7. For this reason, the lateral seal of the seal material 1 is pressed at once over the entire width by the seal pressing surface 4 of the horizontal seal roll 3 as described above.

[0003]

However, in the conventional crimping with the horizontal seal roll 3, the sealing material 1 is crimped at once in the entire width direction of the sealing material 1.
Even if wrinkles have occurred, it will be crimped in a folded state, so wrinkles will be created on the sealing surface,
In the worst case, there was a problem that the contents leaked from the crease folds. The causes of the wrinkles are various, for example, when the ears of the sealing material 1 are shifted or when the sealing material 1 itself is unbalanced and stretched. It is difficult to remove all the causes to prevent the generation of the wrinkles. Was. In addition, it was impossible to predict the location of wrinkles in advance. For these reasons,
The present invention is based on the premise that wrinkles are generated in the sealing material, and aims to solve the above problem by proposing a mechanism for actively removing the wrinkles.

[0004]

SUMMARY OF THE INVENTION Accordingly, the present invention provides a sealing machine for sealing a sealing material, in which a shaft of a horizontal sealing roll is arranged to be inclined back and forth with respect to a traveling direction of the sealing material, and the horizontal sealing roll is sealed. Turn as the material progresses
Roll, and arrange the seal crimping surface formed on the horizontal seal roll in a spiral shape, and tilt the spiral seal crimping surface back and forth.
The rear end of the horizontal seal roll placed as a seal material
When trying to touch, the spiral front end is
Those who are trying to leave al, it is an unit for which a problem solution.

[0005]

[Function] Normally, a sealing machine generally performs vertical sealing first, and then performs horizontal sealing in the subsequent process. If the seal material is "squeezed" from one sealed end to the other end, wrinkles disappear at the other end. I do. In contrast to the conventional sealing machine, in which horizontal crimping was performed at once in the width direction, the present invention uses a mechanism in which crimping is performed stepwise from the vertical seal side to the other side, so that wrinkle removal and crimping can be performed. It was carried out simultaneously.

In the conventional sealing machine, since the sealing operation is performed by running a continuous film, the sealing material must be temporarily stopped in order to press the sealing material at right angles to the traveling direction of the sealing material. However, there have been problems such as the complexity and the reduction of the sealing speed. Therefore, in the present invention, it is possible to seal the seal material at a right angle without stopping the seal material by using the horizontal seal roll 3 having a helical pressure-bonded surface that is installed at an angle in the direction of travel of the seal material.

According to the present invention, the rotary shaft of the horizontal seal roll is installed at an angle, and the crimping surface is spirally arranged so that the crimping surface can be moved stepwise from one end to the other end of the sealing material, and the seal between them can be formed. Since the seal surface can be made perpendicular to the seal material advancing direction without stopping in the advancing direction, the same production amount and seal dimensions as before can be maintained while wrinkling is performed. In this case, the rotation speed of the roller may be the same as the sealing material moving speed component in the direction perpendicular to the roller shaft, and the spiral pitch of the seal pressure-bonding surface is perpendicular to the sealing material advancing direction regardless of the inclination of the roller shaft. What is necessary is just to arrange | position on a roller so that it may become a direction. In FIG. 1, when the horizontal seal roll 3 is considered to rotate upward in the figure (actually, the seal material 1 moves downward), when the crimping surface 4 comes into contact with the seal material 1, as shown in FIG. It can be seen that it is perpendicular to the traveling direction of No. 1.

[0008]

FIG. 1 is a plan view and a side view of a sealing machine according to an embodiment of the present invention. The sealing machine shown in FIG. 1 is different from the conventional machine shown in FIG. 2 only in the installation direction of the horizontal seal roll 3 and the arrangement of the seal pressing surface 4. Specifically, the horizontal seal roll 3 is installed so as to be inclined in the direction of travel of the sealing material.
Further, a point that a spiral pressure contact surface is formed on the surface of the horizontal seal roll 3 is different from that of the conventional device, and other configurations and functions are the same as those of the conventional device.

Next, the operation of the sealing machine having the above construction will be described. The horizontal seal roll 3 is rotated in accordance with the progress of the sealing material 1, and the seal press-fitting surface 4 is first attached to the sealing material 1 at the rear end portion 4-1. Then, the contact point gradually moves to the left in the figure as it rotates in the direction of FIG.
When the front end portion 4-2 contacts the sealing material 1, the horizontal seal 7 is completed. As a result, in the sealing machine according to the present invention, instead of crimping in a horizontal direction at once as in the conventional example of FIG.
Since crimping is performed stepwise from one end (in this case, from right to left of the sealing material), wrinkles generated in the sealing material 1 are driven to the other end as the crimping proceeds, whereby the wrinkles are surely eliminated. As a result, defects such as crimping of wrinkles are eliminated.

[0010]

According to the present invention, as described in detail above, even if wrinkles are generated when sealing the sealing material, the sealing can be performed while actively removing the wrinkles. There is an advantage that it becomes unnecessary and leads to improvement in product quality. Also, when the present invention is applied to a conventional device, no special additional device is required, so that excellent effects such as easy commercialization can be obtained.

[Brief description of the drawings]

FIG. 1 is a plan view and a side view of a sealing portion of a sealing machine according to an embodiment of the present invention.

FIG. 2 is a plan view and a side view of a sealing portion of a conventional sealing machine.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Seal material 2 Vertical seal roll 3 Horizontal seal roll 4 Crimping surface 5 Roll shaft 6 Vertical seal 7 Horizontal seal

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Shigeyuki Hatakeyama 12 Nishiki-cho, Naka-ku, Yokohama-shi Takashi Ikeda Examiner, System Division, Ryohi Engineering Co., Ltd. (56) References JP-A-3-24940 (JP, A) JP-A-62-246722 (JP, A) JP-A-56-26235 (JP, U) JP-B-59-8351 (JP, B2) JP-B-2-54218 (JP, B2)

Claims (1)

(57) [Scope of request for utility model registration] 1. A sealing machine for sealing a sealing material, before the axis of the lateral seal rolls to the traveling direction of the seal member
While it arranged to be inclined after the transverse sealing rolls sealant
The seal pressure contact surface formed on the horizontal seal roll is spirally arranged, and the spiral seal pressure is
The mounting surface is after the horizontal seal roll, which is arranged tilted back and forth.
When the end part tries to contact the sealing material,
A sealing machine, characterized in that the end portions are moving away from the sealing material .