JPS61273320A - Vacuum packer - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a vacuum aluminum packing device that can easily vacuum pack fresh foods and the like into thermoplastic resin bags.

[Prior Art] Conventionally, as shown in Japanese Unexamined Patent Publication No. 53-2183,
An air suction port is used when the opening of a thermoplastic resin bag is clamped and closed between two press stands, at least one of which is configured as a heating device, and heat-welded.

A device is known in which the air inside the resin bag is evacuated using a vacuum pump. This apparatus is provided with a switch for the air suction pump which is switched to the closed position when the angular swinging arm supporting one press table is moved to the welding position. As a result, the opening of the thermoplastic resin bag is sandwiched between the two press tables, the switch is closed, the air suction pump is operated, and the heating device is operated while the air inside the bag is evacuated. The opening of the bag is heat welded.

[Problems to be solved by the invention] However, the conventional device does not necessarily have two problems during heat welding.
It is not always the case that the two press stands are tightly pinched into the opening of the bag, and due to the nature of thermoplastic resin bags, even if the opening of one bag is tightly pinched, it is not always the case. However, since they are welded together when subjected to heat, they can sometimes be welded to a state where the airtightness at the opening of the bag is inadequate. There was also the problem that

[Means for Solving the Problems] The present invention includes an electric blower, an intake nozzle that sucks out air in a thermoplastic resin bag connected to the blower and covered on the outer periphery, and a This is carried out in a vacuum sealing device equipped with a sealing mechanism that clamps and closes the opening of the resin bag and heat-welds the opening, and the sealing mechanism is connected to a heater, a heating plate to which the heater is attached, and a heating plate. The pressing body is attached to the front side of a rotatably provided opening/closing lid, and the pressing body is pressed by the opening/closing lid and connected in series with the heater to the side of the substrate to which the heating plate is attached. A normally open switch is installed on the substrate side, and the closing operation of the opening/closing lid is temporarily stopped at a position where the pressing body approaches the heating plate, and the pressing of the switch by the opening/closing lid is temporarily stopped. The above-mentioned conventional problems are solved by providing the blocking struts 41.

[Operation] With the opening/closing lid open, place the opening of the thermoplastic resin bag containing fresh food over the intake nozzle, then close the opening/closing lid and temporarily secure it with the stopper. Then, the opening of the resin bag is pinched by the heating plate and the pressing body approaching it.
In this state, operate the electric blower to suck out the air inside the resin bag. After this, the opening/closing lid is further pressed against the substrate side. As a result, the pressing body presses the opening of the resin bag more strongly against the heating plate, increasing the degree of sealing of the opening. At the same time, the switch is closed by the above displacement of the opening/closing lid, and the heater of the sealing mechanism generates heat, so that the opening of the resin bag is sealed by heat welding and the fresh food is vacuumed.

[Example] Hereinafter, one embodiment of the present invention will be described based on the drawings.

Figure 1 shows the external appearance of the vacuum packaging device.The top surface of the base 1 is covered by a main body cover 2 and an opening/closing lid 3, and an insertion glug 4 is attached to the joint between the base 1 and the main body cover 2. A power supply cord 5 is led out. A handle 6 for carrying, a power switch 7, and a pilot run f8 are attached to the top surface of the main body cover 2. The opening/closing lid 3 consists of an upper plate part 3^ and a thick front plate part 3b, and a transparent plate (for example, a glass plate) 9 is fitted into the center of the upper plate part 3a.
An opening/closing operation knob 10 is fixed to the upper end of the opening/closing operation knob 10.

Further, a cutter operation knob 1 is attached to the front edge of the upper plate portion 38 so as to be slidable left and right along the guide groove 12.

FIG. 2 shows the internal structure of the vacuum packing device, in which a substrate 13 is fixed to the upper end of the base 1 by screws or other means.
An electric blower 14 is provided between this board 13 and the main body cover 2.
are attached via vibration isolating members 15m and 15b.

This blower 14 is installed with the intake port facing forward,
An intake nozzle 16 is connected to the intake port. This intake nozzle 16 has a distal end intake port 17 formed into a wide flat shape that extends diagonally downward, and has a flange 18 on the outer periphery of the base end, which is formed using a soft elastic material. Besieged at 19.

The elastic member 19 maintains airtightness between the intake nozzle N16 and the intake port of the blower 14, and the flange portion 18 is connected to the substrate 13 and the main body cover 2 through the elastic member 19.
It is elastically held between Therefore, the suction nozzle 16 can rotate the suction port 17 up and down using the elasticity of the member 190, but when pressed from above by the plate spring 20, it comes into close contact with the substrate 13 as shown in FIG. It becomes like this.

As shown in FIG. 3, the leaf spring 20 is rotatably supported at one end by the upper end of a support shaft 21 implanted on the base plate 13, and rotates in the direction of the arrow to move the intake nozzle 16 upward. The retainer is rotated again in the direction of arrow B so that it can be removed from the nozzle 16. Note that 20' in FIG. 2 shows a state in which the leaf spring 20 is removed from the nozzle 16.

The opening/closing lid 3 has one end of each arcuate arm 22 fixed to the left and right inner surfaces of the end edge of the upper plate portion 3a, and the other end of each arm 22 is rotated by a shaft 23 to the left and right inner surfaces of the front edge of the main body cover 2. It is movably attached and can be rotated up and down. Note that f in FIG. 2 indicates a state in which the opening/closing lid 3 is opened upward. The guide groove 12 is formed in the front plate part 3b of the opening/closing lid 3 so as to pass between the upper and lower surfaces and to be elongated in the left-right direction (in FIG. 2, the direction perpendicular to the plane of the paper). An elevating shaft 25, which has a cutter 24 fixed to its lower end and the cutter operation knob 11 fixed to its upper end, is attached to the guide groove 12 so as to be movable up and down and slidable left and right. This lifting shaft 25 is always urged upward by a spring 26Vc, and the knob 1 is pushed against the spring 26.
1 is pushed down, the cutter 24 protrudes υ from the lower surface of the front plate portion 3b. Further, in the front plate part 3b, a holding groove 27 parallel to the guide groove 12 is provided at a position on the front side of the guide groove 12 and opened on the lower surface of the front plate part 3b. An elastic tape of an appropriate length shown by the imaginary line in the figure is flattened and press-fitted, and slightly protrudes from the lower surface of the front plate portion 3b to serve as a pressing body 28.

On the other hand, a slit 29 is formed in the substrate 13 at a position below the guide groove 12 . Further, a heating plate 30 made of glass wool is fitted into the surface of the substrate 13 at a position below the pressing body 28, and a sealing mechanism 31 is formed on the lower surface of the heating plate 30 together with the pressing body 28 and the heating plate 30. The sheathed heater 32 is installed closely. Furthermore,
A normally closed microswitch 33 is fixed to the upper surface of the base 1, as shown in FIG. 5 (cross-sectional view taken along the line AA in FIG. 2). The upper surface of this switch 33 is aligned with the upper surface of the base plate 13, and the operation button 33m protrudes from the upper surface to face the lower surface of the front plate portion 3b of the opening/closing lid 3. Further, a stop horn 434 that can be raised and lowered on the base 1 has its upper end protruding from the upper surface of the substrate 13 and facing the lower surface of the front plate portion 3b. This spacer 34 is always urged upward by a spring 35, and supports the opening/closing lid 3 from below as shown by the imaginary line in FIG. Although the microswitch 33 is prevented from closing on the lower surface of the portion 3b, when the opening/closing operation knob 10 of the lid 3 is pushed down by hand, it descends against the spring 34 as shown by the real whale in the same figure. Closing operation of the microswitch 33 by the lower surface of the front plate portion 3b is allowed.

As shown in FIG. 6, the motor of the electric blower 14 is connected to a power source via a power switch 7, the power supply cord 5 and the plug 4, and a sheathed heater 32 and a microswitch 33 are connected between the terminals of the motor. The series circuit is connected in parallel to the motor.

In FIG. 2, numeral 36 is an exhaust port provided on the rear plate of the main body cover 2, and 37 is a filter that closes the exhaust port 36 from the inside.

Next, we will explain how to use and operate this vacuum packing device.0 For example, when putting fresh foods 38 such as fruits and vegetables into a thermoplastic resin bag 39 and vacuum packing them, first place the opening/closing lid 3 in a hypothetical manner as shown in FIG. Leave it open to the position shown by the line, and then press the plate 2
0 from the intake nozzle 16, and while lifting the intake port 17 of the nozzle 16, cover the periphery of the nozzle 16 with the opening of the resin bag 39 containing the fresh food 38, and place the part containing the food 38 on the base. Let it hang in front of 1. When the nozzle 16 is pressed by the leaf spring 20, the resin bag 39 is sandwiched between the intake port 17 of the nozzle 16 and the substrate 13 and held at a fixed position. When the opening/closing lid 3 is lowered to the position where it hits the stop horn 434 (the position shown by the imaginary line in FIG. It is still held open. Next, when the power switch 7 is turned on, the electric blower 14 is activated and air is sucked in through the intake port 16 of the intake nozzle 16, passes through the blower 14, and flows out through the exhaust port 36. The air is sucked out and the plate 39 comes into close contact with the outer surface of the food 38.

Therefore, if you push down the opening/closing operation knob 10 of the opening/closing lid 3,
As shown in FIG. 5, the stopper 34 and the operation button 33& of the microswitch 33 are pressed down on the lower surface of the front plate 3b of the lid 3 to close the switch 33, and thereby the sheathed heater 32
A current flows through, heating the heating plate 30. Further, at the same time, the pressing body 28 is strongly pressed against the heating plate 30, so that the opening of the resin bag 39 is always clamped and closed between the pressing body 28 and the heating plate 30, and the sealing can be performed by heat welding.
Food 38 is vacuum packed in a resin bag 39. Next, when the cutter operation knob 11 is pressed down, the tip of the cutter 24 is lowered to a position where it enters the slit 29, as shown by the imaginary line in FIG. Therefore, when the knob 11 is pressed down and slid along the guide groove 12 from the left end to the right end (or vice versa), the resin bag 39 is cut at a position near the opening end near the sealing part. Ru. Then, turn off the power switch 7, and turn off the electric blower 14 and sheathed heater 32.
After stopping the energization, if the opening/closing lid 3 is opened by lifting the knob 10, the resin bag 39 containing the food 38 can be taken out.

Therefore, according to this vacuum packing device, fresh foods and the like can be easily vacuum packed by placing them in thermoplastic resin bags, and the device is suitable for general household use because it is simple in structure and operation.

In addition, in the vacuum/+ rack arrangement described above, if the width of the resin bag 39 is much larger than the width of the intake port 17 of the intake nozzle 16, there is a problem that the sealed part becomes wrinkled. This problem can be solved by attaching a bag opening tensioning mechanism shown in FIGS. 7 and 8 to the outer periphery of the intake port 17. In other words, a pair of expansion members 4 bent into a U-shape
0.41 loosely fitted on the left and right sides of the outer periphery of the intake port 17 as shown in FIG. 7, and two links 40m, 40b, and 41m.

Prepare a pair of 41b arranged in an X shape. One end of each of the links 40m and 41h is fixed with pins 40c and 41e inside the expansion member 40.41, and the links 40b and 41h are fixed with pins 40c and 41e.
A pin 40d is provided at each end of 1b.

41d are provided and these are slidably fitted into elongated holes 40@, 41e formed in the expansion member 40.41 to extend in the intake direction. Also, the link 40a.

The other ends of 41m and the other ends of links 40b and 41b are fixed with pins 40f and 41f, and one pin 40f is fixed to each other with pins 40f and 41f.
A hook 42 is attached to the terminal, and the other pin 411 is fixed to the center of the outer surface of the air intake port 17.

When the tension sgel ring 43 is placed between the bottles 4o1 and 411, the pin 40f is urged in the direction toward the pin 41f. Therefore, the outer surface of the intake port 17 is provided with a pin 40f.
a guide groove 4 that guides the
4, and a hook pin 45 for separating the pin 401 from the pin 41f.
By hooking 7 hooks 42 to 5, both expansion members 40, 41 can be held in close position.

Therefore, when the hook 42 is removed from the hook pin 45, the pin 4
0f is pulled by the spring 43 and slides in the guide groove 44 toward the pin 411, and the left and right links 40a, 40b, and 41m are assembled in an X shape.

41b extends in the width direction of the intake port 17, to the left and right, and the pin 40
d and 41d slide in the respective elongated holes 40e and 41e to move the expansion members 40 and 41 to the left and right as shown by imaginary lines in the figure.

Therefore, when the resin bag 39 is placed on the outside of both expansion members 40 and 41 with the hook 42 hooked on the hook pin 45, and the hook 42 is removed from the hook pin 45, the tension of the spring 43 causes the expansion member to 40° 41 will move left and right to the shark width of bag 39. And in this state, resin bag 3
Since the openings 9 are stretched all the same in the width direction, the wrinkles in the area to be sealed are smoothed out, and sealing can be performed without wrinkles.

FIG. 9 shows another embodiment of the bag tensioning mechanism, which is used to prevent the sealed portion of the plastic bag 39 from wrinkling. That is, a pair of expansion members 46 and 47 having a U-shaped cross section are loosely fitted on the outer periphery of the intake hole 17 of the intake nozzle 16 on the left and right sides, and these are attached to the intake port 17 by pins 46IL and 47b.
Stop it. Further, the expansion members 46 and 47 have engaging protrusions 46.
b, 47b, and a ninth tension spring 48 is provided between both members 46, 47 to open them outwardly. On the other hand, a guide groove 49 that is long in the intake direction is formed in the center of the intake port 17, and a retaining member 50 that is movable forward and backward along this groove 49 is provided, and this member 50 is connected to both the engaging protrusions 46b.
, 47b. In addition, the same member 50FC is equipped with a hook 51 similar to that shown in FIG. Members 46,47 are configured to be held in the closed position.

Therefore, when the resin bag 39 is placed on the outside of both expansion members 46 and 47 with the hook 51 hooked on the hook pin 52, and the hook 5 is removed from the hook pin 52, the expansion member 46 and 47 are expanded by the tension of the spring 48. The members 46 and 47 can be rotated left and right to the maximum width of the bag 39, and the wrinkles of the bag 39 can be smoothed out. In addition,
In this bag tensioning mechanism, if the rotating ends of the expansion members 46 and 47 are rounded as shown in the figure, the bag 39 can be pulled into the expansion member 4.
There is no risk of it breaking at the 6°47 angle.

Although the above-mentioned embodiment is configured as described above, in implementing the present invention, an electric blower, an intake nozzle, a heater, a heating plate, a pressing body, an opening/closing lid,
Board, switch, Stotsuno J? It goes without saying that the specific structure, shape, position, material, etc. of the present invention are not limited to the one embodiment described above, and can be implemented in various ways.

[Effects of the Invention] According to the present invention, the gist of which is the structure described in the above claims, the seal is removed by further pushing the opening/closing lid that is temporarily secured against the stopper and closing the switch that causes the heater to generate heat. The clamping and closing of the opening of the thermoplastic resin bag by the heating plate and the pressing body of the mechanism is inevitably strengthened, and the opening of the resin bag can be heat-welded without fail in a sealed state, so it is possible to securely seal the opening of the resin bag. The reliability of the airtight seal can be improved, and the operation for heating and welding can be done simply by pressing the opening/closing lid, making it easy to handle.

[Brief explanation of drawings]

1 to 6 show an embodiment of the present invention, in which FIG. 1 is an external perspective view of a vacuum vacuum device, FIG. 2 is a vertical sectional view of the device, and FIG. 3 is an internal view of the device. FIG. 4 is a perspective view showing a part of the structure, FIG. 4 is a perspective view showing the pressing body of the device taken out, and FIG.
The figure is a sectional view taken along the line A-A in FIG. 2, FIG. 6 is a circuit diagram of the device, and FIGS. 7 and 8 show the bag tensioning mechanism added to the device. FIG. 8 is a front view of the mechanism, FIG. 8 is a plan view of the same mechanism, and FIG. 9 is a plan view showing another bag tensioning mechanism. 3... Opening/closing lid, 13... Board, 14... Electric blower, 16... Intake nozzle, 28... Pressing body, 30...
...Heating plate, 31...Sealing machine WE, 32...Sheathed heater, 33...Micro switch, 34...Stomach mother, 39...Thermoplastic resin bag. Applicant's representative Patent attorney Takehiko Suzue 61st! I

Claims (1)

[Scope of Claims] An electric blower, an intake nozzle connected to the blower to suck out air in a thermoplastic resin bag covered on the outer periphery, and an opening of the resin bag that is clamped and closed at a position in front of the intake nozzle. In a vacuum packing device equipped with a heat-welding sealing mechanism, the sealing mechanism is a heater;
It consists of a heating plate to which this heater is attached, and a pressing body that comes into contact with and separates from this heating plate, and the pressing body is attached to the front side of a rotatable opening/closing lid, and the substrate side to which the heating plate is attached is attached. A normally open switch that is pressed by the opening/closing lid and installed in series with the heater is installed, and the closing operation of the opening/closing lid is mounted on the substrate side at a position where the pressing body approaches the heating plate. A vacuum packing device characterized in that it is provided with a stopper that is temporarily fixed and temporarily prevents the switch from being pressed by the opening/closing lid.