JPS581446Y2 - vacuum packaging equipment - Google Patents

Description

[Detailed description of the invention] The present invention is characterized in that the object to be packaged is placed on a continuous lower film and transported intermittently together with the film, while the upper film is fed in an inclined manner with respect to the lower film. and a heater plate is installed along the inclined surface of the upper film, and the article is vacuum-packed between the two films in a vacuum box provided behind the heater plate. It is characterized in that the heating heat distribution to the upper film is made good.

Installing the heater plate at an angle to follow the ridge film that is supplied in an inclined manner has extremely good heating efficiency for the film, but the heat distribution on the heater plate is such that the higher part of the plate is at a higher temperature. The lower part of the film tends to have a lower temperature, so the heating heat distribution for the film inevitably deteriorates.

In view of the above points, the present invention utilizes the vertical movement of the upper box in the vacuum box to move the heater plate up and down, thereby improving the heat distribution of the plate during film transport time, without impairing packaging efficiency. (It is designed to improve the heating heat distribution of the film.

Embodiments of the present invention will be described below based on the drawings.

In the drawing, the lower film F1 has a packaged object A on its upper surface,
A is mounted on a tower, supported on both sides by endless chains (not shown), and transported intermittently in the direction of arrow B.

In addition, a vacuum box 3 is formed by an upper box 1 and a surface plate 2 installed across the transportation area of the lower film F1, and a heater mounting plate 4 is pivotally supported on the front surface of the upper box 1 via a pin 5. , a plurality of heaters 6. on the lower surface of the heater mounting plate 4.
6... are installed independently at predetermined intervals.

Further, the upper box 1 has a pair of arms 7.7 protruding from both sides thereof in the direction of conveyance of the lower film F1, and the tips of these arms 7.7 are pivotally supported on the frame 9 via a shaft 8. Long holes 11, 11 formed in plates 10.10 protruding from both front sides of the heater mounting plate 4 are connected to shafts 13 at both ends of the idle roller 12 supported on the frame, so that when the vacuum box 3 is closed, the heater The mounting plate 4 is slidably supported so as to be disposed along the inclination angle of the upper film F2.

On the other hand, the upper film F2 is arranged along the front surface of the idle row 212, the lower surface of each heater 6.6, and further along the lower surface of the hot plate 14 in the upper box 1.

The present invention is constructed as described above, and its operation will be explained below.

When the opening surface of the upper box 1 is in contact with the upper surface of the surface plate 2 as shown in FIG. 1, the flexible tubes 15 and 16 connected to the upper box 1 and the surface plate 2 are The inside of the vacuum hox 3 is evacuated through the vacuum hox 3, and then the atmosphere is introduced from both tubes 15 and 16 so that the upper tube 15 is momentarily faster.
In the vacuum box 3, the packaged item A is packed so as to be sandwiched between the upper and lower films F2 and 11, and then the upper box 1 is moved along the imaginary line 1a in FIG. At the same time, the lower film F1 is transported by a predetermined pinch by the cheno, so the upper film F2 and the packaged object A are also moved at the same time, and the lower film F1 is moved downward again. Since the process is repeated repeatedly, continuous vacuum packaging can be performed while transporting the film intermittently.

In the above-mentioned packaging work, the film and the packaged object A
When the upper box 1 is displaced upward to move the upper box 1, the end protruding from the upper box 1 is pivotally supported by the pin 5, and the other end is freely slidable on the shaft 13 through the elongated hole 11 of the plate 10. The heater mounting plate 4 supported by the heater mounting plate 4 is also lifted up to a substantially horizontal position as indicated by the imaginary line 4a, moves away from the upper film upper limit position Fa, and then lowers again with the downward movement of the upper box 1, which is repeated.

In the embodiment, the front end of the heater mounting plate 4 is connected to the shaft 1.
3, but it goes without saying that the rear end pin 5 side may be slid.

Further, although the upper box 1 is designed to move up and down using the shaft 8 as a fulcrum, it is of course possible to move up and down while maintaining the horizontal state.

As shown in the above, the present invention has a heater mounting plate 4 pivotally supported on the front surface of the upper box 1 constituting a part of the vacuum box 3, so that when the upper box 1 is in the lowered position, the tilt guiding angle of the upper film F2 is adjusted. The front end of the heater mounting plate 4 is supported on a shaft 13 so that the heater mounting plate 4 is disposed along an inclined surface, and with the shaft 13 as a fulcrum, the heater mounting plate 4 also moves up and down as the upper box 1 moves up and down. If the heater mounting plate 4 is always kept tilted at LKL as in the conventional case, the temperature at the higher position of the heater 6 will be higher than the temperature at the lower position due to heat conduction. Although the heating temperature distribution for the upper film F2 deteriorates accordingly, in this application, the lower position of the heater mounting plate 4 is intermittently moved upward due to the above structure, so the temperature distribution is improved and the degree of adhesion to the packaged object A is improved. will improve.

In particular, for a thin thermoplastic synthetic resin film, even a temperature difference of only 1'C has a large effect, so improving the temperature distribution as described above has a great effect.

Moreover, since the heater mounting plate 4 is displaced using the power of the vertical movement of the upper box 1, not only is there no need for a dedicated power source or power transmission device, but also when the film is moved, that is, the upper film F2 is Since it moves upward when there is no need for heating to equalize the temperature, there is an advantage that the degree of adhesion to the packaged object can be improved without reducing the efficiency of vacuum packaging.

[Brief explanation of drawings]

FIG. 1 is a side view showing an embodiment of the present invention, and FIG. 2 is a previous view taken along the line ■--■. Fl... Lower film, F2... Upper film, A... Item to be packaged, 1... Upper box,
2... Surface plate, 3... Vacuum box, 4
...Heater mounting plate, 6...Heater, 1
4...Hot plate.

Claims (1)

[Scope of utility model registration request] A surface plate 2 that supports on its upper surface a lower film F1 on which a large number of items to be packaged A, A... are placed and moves intermittently in a predetermined direction.
and an upper box 1 that moves up and down on the top of the surface plate 2 to seal and open the inside, and a vacuum box 3 is constituted. In an apparatus for vacuum packaging between F2 and F2, a heater mounting plate 4 pivotally supported on the front surface of the upper box 1;
When the upper box 1 is in the lowered position, the upper film F2
The front end of the heater mounting plate 4 is supported on a shaft 13 so that the heater mounting plate 4 is disposed along an inclined surface with an inclination guiding angle of . A vacuum packaging device characterized in that a mounting plate 4 is configured to be vertically displaced.