JP3278761B2 - Pack sealer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pack sealer in which a package is put in a pack, a film is put on the pack, and the film is sealed around the pack to obtain a packaged product.

[0002]

2. Description of the Related Art A packaged product is put in a pack, covered with a plastic film from above, and the film is fused to the edge of the pack to obtain a packaged product.
In a conventional pack sealer for producing such a packed product, when the film covered on the pack is fused to the edge of the pack, the sealer presses the film against the edge of the pack from above the pack. .

[0003] Since the pack receiving the pressing force from the sealer is placed in a frame which is moved on a transfer device such as a chain conveyor, when the pack is pressed by the sealer from above, the pressing force is increased by the transfer force. The conveyor device such as a chain conveyor is stretched by receiving the pressing force.

[0004] When a conveying device such as a chain conveyor is stretched by the pressing force as described above, the conveying device cannot accurately feed the pack to a designed position, resulting in a defective sealing property of the pack. Something like that happens.

[0005]

SUMMARY OF THE INVENTION The present invention relates to a pack sealer in which a packaged product is placed in a pack, a film is placed thereon, and the film is sealed around the pack to obtain a packaged product. Another object of the present invention is to provide a pack sealer that is simple in structure and easy to operate, so that a pressure from a sealer does not adversely affect a transfer device or the like.

[0006]

SUMMARY OF THE INVENTION According to the present invention, a film is placed on a pack containing packages contained in a frame which is continuously conveyed on a conveying device, and the edge of the pack and the film are sealed by a sealer. to solve the problems described above in pack sealer to seal by welding under pressure, the is raised from the lower to the position of the frame when pressurized by Sheila
Provided is a pack sealer having a configuration in which a seal pressure receiving base that receives a pressing force of the sealer while moving at a speed synchronized with a transport speed of a frame is provided.

[0007] Since the pack sealer according to the present invention is configured as described above, when the pack is pressed by the sealer, the seal pressure receiving pedestal is raised from below to the position of the frame in which the pack is stored. , Synchronized with the transport speed of the frame
The pressing force from the sealer is received by the seal pressure receiving table while moving at a constant speed, and the pressing force from the sealer does not act on the pack conveying device or the like.

Therefore, according to the pack sealer of the present invention,
When the film is fused to the pack under pressure, the pressing force applied from the sealer does not adversely affect the conveying device or the like. Moreover, the seal pressure pedestal is
Except at the time of pressurization by the sealer, it is below the position of the frame and does not hinder the transport of the pack by the transport device.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to an embodiment shown in FIGS. 1 and 2 to which a pack sealer is attached. In FIG. 1, reference numeral 1 denotes a frame which accommodates and conveys a pack P, and is conveyed on an endless chain conveyor 2 with rollers on its side.

Reference numeral 3 denotes a sealer for fusing a film (not shown) covered on the pack P to an edge of the pack P.
The frame 4 is elastically supported by bolts 5 and springs 6. The sealer 3 is pressed downward by the pressing device 7 to press and fuse the film against the edge of the pack P.

The machine frame 4 is guided to move up and down along a rod 8. A pressure receiving plate 9 is attached to a lower end of the rod 8. On the pressure receiving plate 9, a pressure receiving stand 10 is provided upright. A gap of several mm is maintained between the upper end of the pressure receiving base 10 and the lower surface of the frame 1.

On the other hand, the upper end of the rod 8 is connected to an operation plate 11, and the operation plate 11 is connected to an operation rod 12 connected to an actuator (not shown). When the actuator is operated and the operating rod 12 is lifted upward, the pressure receiving base 1 is moved through the rod 8 and the pressure receiving plate 9.
0 is raised by several mm, and the upper end of the pressure receiving base 10 comes to the position of the lower surface of the frame 1.

In this state, when the pressurizing device 7 is operated and the sealer 3 presses the film so as to fuse the film to the edge of the pack P, the pressing force is received by the pressure receiving base 10 via the frame 1. It does not act on the chain conveyor 2 which is a transport device.

While the pressurizing device 7 is operated and the sealer 3 presses the film against the edge of the pack P for fusion, the sealer 3 is held by the sealer 3 and the pressure receiving base 10 while the frame 1 is sandwiched therebetween. 3 is transported by a suitable moving device (not shown) at a speed synchronized with the chain conveyor 2, and is continuously transported like other packs.

When the fusion of the film to the pack is completed, the pressurizing of the sealer 3 by the pressurizing device 7 is released, and the operation of the actuator is also released, so that the pressurizing pedestal 10 is released.
Is lowered to the original position. Thus, the sealer 3 returns to the original position and performs the same pressing operation on the next pack.

As shown in FIG. 2, two sealers 3 and one trimming mechanism 12 are attached to the machine casing 4, and the two packs are operated by the sealer 3 in one operation. Seal operation (in the first seal operation, pack P
Excess liquid and the like are pushed out from the inside, and the second sealing operation completely seals. ), And the film fused to the edge of the pack by the trimming mechanism 12 is cut around the edge of the pack to separate one package-containing pack. At this time, all the downward pressing force is received by the pressure receiving base 10.

As described above, according to the apparatus of this embodiment, the pressing force from the sealer is not exerted on the pack conveyor such as a chain conveyor, and the edge of the pack continuously conveyed by the conveyor is provided. On the other hand, the film can be sealed with a sealer.

As described above, one embodiment of the present invention has been specifically described with reference to the drawings. However, the device of the present invention is not limited to this embodiment, and various changes may be made. Needless to say. For example, in the above-described embodiment, the fusion of the film to the pack is performed twice by using two sealers. However, the sealing may be performed once by one sealer.

[0019]

As described above, according to the present invention, when pressurized by the sealer, the frame is raised from below to the position of the frame, and
By providing the seal pressure receiving base that receives the pressing force of the sealer while moving at a speed synchronized with the conveying speed, it is possible to provide a pack sealer that does not adversely affect the conveying device or the like due to the pressing force from the sealer.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a configuration of a pack sealer according to an embodiment of the present invention.

FIG. 2 is a side view of the pack sealer shown in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Frame 2, Chain conveyor 3, Sealer 4, Machine frame 5, Bolt 6 Spring 7 Pressing device 8 Rod 9 Press receiving plate 10 Press receiving stand 11 Working plate 12 Trimming mechanism

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B65B 7/28 B65B 51/10 B65B 51/14

Claims (1)

(57) [Claims] 1. A film is placed on a package containing packages contained in a frame which is continuously conveyed by being mounted on a conveying device, and the film is fused to the edge of the pack under pressure by a sealer and sealed. In the pack sealer, when pressed by the sealer, it is raised from below to the position of the frame.
A pack sealer provided with a seal pressure receiving base that receives a pressing force of the sealer while moving at a speed synchronized with a transport speed of the frame body .