JPH0516282U - Sealing machine - Google Patents

Abstract

(57) [Summary] [Purpose] To enable effective horizontal sealing of the sealing material while positively removing wrinkles generated in the sealing material. [Structure] The horizontal seal roll 3 for sealing is installed so as to be inclined in the advancing direction of the seal material, and a spiral pressure-bonding surface 4 is formed on the surface of the horizontal seal 3. Horizontal seal roll 3
The crimping surface 4 comes into contact with the right end 4-1 of the sealing material, and the lateral seal 7 is performed while the contact point gradually moves to the left.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a sealing machine applicable to a bag filling machine and the like.

[0002]

[Prior Art]

 The conventional technique will be described with reference to FIG. 2. FIG. 2 is a plan view and a side view of a conventional sealing machine. In the figure, 1 is a seal member, 2 is a vertical seal roll, 3 is a horizontal seal roll, and the horizontal seal roll 3 is rotatably provided around a shaft installed at right angles to the traveling direction of the seal member 1. The seal crimping surface 4 for crimping 1 is also arranged in parallel with the axis of the horizontal seal roll 3 to form a sealing machine. In this sealing machine, the sealing material 1 is vertically sealed by the 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 seal material 1, and heat-presses on the pressure-bonding surface 4 to perform the horizontal seal 7. For this reason, the lateral seal of the seal material 1 is crimped over the entire width at once by the seal crimping surface 4 of the lateral seal roll 3 as described above.

[0003]

[Problems to be solved by the device]

 However, the conventional crimping with the horizontal seal roll 3 crimps the sealing material 1 at one time in the entire widthwise direction of the sealing material 1, so even if the sealing material 1 is wrinkled, the wrinkles are folded. Since crimping is performed in the state, wrinkles may be created on the sealing surface, and in the worst case, there was a problem that the contents leaked out from the gap between the creases. There are various causes of wrinkling, such as when the ear of the sealing material 1 is deviated or when the sealing material 1 itself is unevenly stretched, and it is difficult to eliminate all the causes in order to prevent the wrinkling. there were. Moreover, it was impossible to predict the location of wrinkles in advance. In view of the above, the present invention aims to solve the above problems by proposing a mechanism for positively removing wrinkles on the premise that wrinkles are generated in the sealing material.

[0004]

[Means for Solving the Problems]

 Therefore, in the present invention, in the sealing machine for sealing the sealing material, the shaft of the horizontal sealing roller is installed tilted with respect to the traveling direction of the sealing material, and the seal crimping surface formed on the horizontal sealing roll is spirally arranged. This is the structure, and this is the means for solving the problems.

[0005]

[Action]

 Normally, a sealing machine generally first performs a vertical seal and then performs a horizontal seal in a subsequent process. Therefore, if the seal material is “squeezed” from one end that has already been sealed to the other end, wrinkles disappear at the other end. Therefore, in the conventional seal machine, lateral crimping was performed at a time in the width direction, but in the present invention, a mechanism for gradually crimping from the vertical seal side to the other side is used, which enables wrinkle removal and crimping. Were carried out at the same time.

Further, in the conventional sealing machine, since the sealing work is carried out as a continuous film work, the sealing material must be temporarily stopped in order to perform pressure bonding at a right angle to the advancing direction of the sealing material. However, there were problems such as complicated and slow sealing speed. Therefore, in the present invention, it is possible to seal the sealing material at a right angle without stopping the sealing material by using the horizontal sealing roll 3 having a spiral pressure-bonding surface that is installed so as to be inclined in the sealing material traveling direction. .

According to the present invention, the rotary shaft of the horizontal seal roll is installed so as to be inclined, and the crimping surface is arranged spirally, so that the crimping surface can be moved stepwise from one end to the other end of the sealing material, and the space between them is Since the sealing material can make the sealing surface at right angles to the sealing material traveling direction without stopping in the traveling direction, it is possible to maintain the same production amount and seal size as before while wrinkling. In this case, the rotation speed of the roller should be the same as the seal material moving speed component in the direction perpendicular to the roller shaft, and the spiral pitch of the seal crimping surface should be the same regardless of the inclination of the roller shaft. It may be arranged on the roller so that it is perpendicular to the traveling direction. In FIG. 1, considering that the horizontal seal roll 3 rotationally moves upward in the drawing (actually, the seal material 1 moves downward), when the crimping surface 4 comes into contact with the seal material 1, a seal like the horizontal seal 7 is produced. It can be seen that it is perpendicular to the traveling direction of the material 1.

[0008]

【Example】

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

Next, the operation of the seal machine having the above-described structure will be described. The seal pressing surface 4 of the horizontal seal roll 3 first contacts the seal material 1 at the right end 4-1 and then rotates in the direction shown in FIG. Accordingly, the contact point gradually moves to the left in the figure, and the horizontal seal 7 is completed when the left end 4-2 of the horizontal seal roll 3 contacts the seal material 1. As a result, in the sealing machine according to the present invention, the sealing material 1 is pressure-bonded gradually from one end (in this case, from right to left of the sealing material), instead of laterally crimping at once as in the conventional example of FIG. The wrinkles generated at the end are driven to the other end as the crimping progresses, so that the wrinkles disappear surely. As a result, the problem of crimping the wrinkles is eliminated.

[0010]

[Effect of the device]

 As described in detail above, according to the present invention, even if wrinkles are generated when sealing the sealing material, the wrinkles can be removed by positively removing the wrinkles. It also has the advantage of improving product quality. In addition, even when the present invention is applied to a conventional device, no special additional device is required, so that the present invention has excellent effects such as easy commercialization.

[Brief description of 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 seal portion of a conventional seal machine.

[Explanation of symbols]

 1 Sealing material 2 Vertical seal roll 3 Horizontal seal roll 4 Crimping surface 5 Roll shaft 6 Vertical seal 7 Horizontal seal

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Shigeyuki Hatakeyama 12 Nishiki-cho, Naka-ku, Yokohama City Ryoh Engineering Co., Ltd. System Division

Claims (1)

[Scope of utility model registration request] 1. A sealing machine for sealing a sealing material, wherein a shaft of a horizontal sealing roll is installed so as to be inclined with respect to a traveling direction of the sealing material, and a seal crimping surface formed on the horizontal sealing roll is spirally arranged. Sealing machine characterized by.