Heat sealing device

Abstract

The present invention provides a heat sealing device that can properly heat seal a workpiece by clamping the sealing area with uniform pressure. [Solution] The heat sealing device comprises an upper unit 50 and a lower unit 60. The upper unit 50 includes an upper die 55 which is heated and has a pressing projection 55a that presses against the sealing area of ​​the workpiece, and a spring 56 that elastically supports the upper die 55. The lower unit 60 includes a lower die 65 which is heated and has an upper surface 65a which is a flat surface that receives the area corresponding to the pressing projection 55a of the upper die 55, and a spring 66 that elastically supports the lower die 65. The pressing projection 55a and the upper surface 65a press against the workpiece W by the biasing force of the springs 56, 66, and the sealing area is heat-sealed.

Claims

1. A heat sealing device for heat sealing a workpiece, It comprises a first unit and a second unit, The first unit is, A first mold section having a pressing projection that is heated and presses against the sealing area, which is the area in which the workpiece is heat-sealed, The first molded portion is elastically supported by a first elastic support portion, The second unit is, A second mold portion is heated and has a flat surface that receives the region corresponding to the pressing projection of the first mold portion, It comprises a second elastic support portion that elastically supports the second mold portion, The pressing projection and the flat surface heat-seal the sealing area while pressing the workpiece with the biasing force of the first and second elastic support portions. A heat sealing device characterized by the following features.

2. A first drive unit moves one of the first unit and the second unit relative to the other unit over a first stroke, The device comprises a second drive unit that moves one unit relative to the other unit over a second stroke shorter than the first stroke, With the first drive unit driven and one unit positioned on the other unit side during the first stroke, the second drive unit is continuously driven to continuously heat seal multiple workpieces. The heat sealing device according to feature 1.

3. The first mold section and the second mold section are rigid molds. A heat sealing device according to feature 1 or 2.

4. The workpiece is a sheet material made by layering paper materials with a sealant layer laminated on top of each other. The heat sealing device according to feature 3.

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