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Heat-sealing device

A technology of heat sealing device and heater, which is applied in packaging, transportation packaging, transportation and packaging, etc., can solve problems such as wire breakage and heater fatigue, and achieve the effect of suppressing wire breakage and reducing tensile stress

Inactive Publication Date: 2013-04-17
NIFCO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, since the heater is repeatedly turned on and off, the heater may be fatigued and disconnected due to the tensile stress at the time of contraction.

Method used

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Embodiment approach

[0064]As mentioned above, although this invention was demonstrated in detail based on specific embodiment, this invention is not limited to the said embodiment, It is clear to those skilled in the art that other various embodiment can be implemented within the scope of this invention. For example, in the above-described embodiment, the piston cylinders 24 and 25 are used as the seal member moving mechanism, but instead of the piston cylinder, other seal member moving mechanisms such as a motor and a solenoid may be used.

[0065] In addition, in the above-described embodiment, the heater-side seal member 14 and the press-side seal member 16 are configured to be able to move in both the pinching direction and the pinching opposite direction by the piston cylinders 24 and 25 as the seal member moving mechanism. Instead of this configuration, a seal member moving mechanism may be used so that only either of the heater-side seal member 14 and the press-side seal member 16 can be mo...

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Abstract

The invention provides a heat-sealing device, wherein wire breakage caused by heat expansion of a heater is prevented. Shafts (50, 52) arranged on the pedestral plate (15) of the sealing component (14) at the side of the heater are inserted in the through holes (42, 44) of the terminal platform (36) of the terminal (32) fixedly provided with a strip-shaped heater (30). The terminal platform (36) can move along the shafts. When the strip-shaped heater (30) is expanded caused by heating, the terminal platform (36) moves along the shafts (50, 52) towards the strip-shaped heater (30), compared to the structure that a heater is contracted caused by the force of a spring, the load on the strip-shaped heater (30) when the strip-shaped heater (30) is contracted is minimized, wire breakage caused by heat expansion of the strip-shaped heater (30) is prevented.

Description

technical field [0001] The present invention relates to a heat-sealing device suitable for use in an automatic packaging machine and the like and sealing the opening of a film bag. Background technique [0002] Conventionally, there is patent document 1 as a heat-sealing apparatus, for example. This prior art discloses a structure in which a heater coated with polytetrafluoroethylene is mounted on one surface of a pair of opening and closing plates, and sequentially transported The opening of the film bag is temporarily pinched and heat-sealed from the outside of both sides. [0003] Patent Document 1: Japanese Patent Application No. 5-84612 [0004] However, in Patent Document 1, considering expansion and contraction due to thermal expansion of the heater, as an example, it is necessary to have a structure in which one of the terminals provided at both ends of the heater is fixed to the switch plate One end of the switch, and the other terminal is fixed to the other end ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65B51/10
Inventor 武者孝
Owner NIFCO INC
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