WO2012060670A2 - Vacuum packaging apparatus - Google Patents

Abstract

The present invention provides a noiseless vacuum packaging apparatus while forming a vacuum much faster using a low-cost motor. The vacuum packaging apparatus comprises: a case body; a movable cover which is connected to the case body; a vacuum chamber which is formed in one or both of the case body and the cover and connected to a vacuum pump; and a sealing unit formed in the case body, wherein the case body and a vacuum pump cylinder are formed by one piece.

Description

Vacuum packing machine

The present invention is for vacuum packaging a plastic pack containing food, etc., to extract the air inside the plastic pack, and to a vacuum packaging machine having a function to seal the plastic pack, and specifically to enable vacuum without noise Rather, it relates to a vacuum packaging machine in which the vacuum of the plastic pack and the vacuum container can be easily selected.

In order to prevent oxidation and deterioration of foods or cooked foods, a vacuum packaging machine is developed and used to put foods to be stored inside the packaging and extract air after sealing them for long-term storage.

As shown in Figure 1 (a) and 1 (b), the general vacuum packaging machine 1 is a vacuum chamber 30 is formed inside the upper case 10 and / or lower case 20, the At the periphery of the vacuum chamber 30, a sealing member 31 made of rubber packing, sponge or the like is provided for sealing.

In addition, the vacuum chamber 30 is connected to the vacuum pump 25 installed in the upper case 10 or the lower case 20, the vacuum packaging paper inserted into the vacuum chamber 30 in accordance with the operation of the vacuum pump 25 The air inside is drained.

And the front of the vacuum chamber 30 of the lower case 20 is provided with a heater 40, which is a heat sealing means for sealing the normal plastic pack or vacuum-treated vacuum packaging paper, and close contact between the heater 40 and the vacuum packaging paper In order to contact the heater 40, the contact member 12 is disposed on the lower surface 11 of the upper case 10.

The conventional vacuum packaging machine 1 is operated as follows.

First, the contents such as food and the like are inserted into the vacuum packaging paper, and the opening of the vacuum packaging paper is positioned in the vacuum chamber 30, and then the upper case 10 is closed to seal the space of the vacuum chamber 30. Thereafter, when the user presses the switch or the switch 22 installed on one side of the upper surface 21 of the lower case 20 is pressed by the closing of the upper case 10, the vacuum packaging machine 1 is operated. At this time, the vacuum pump 25 installed in the upper case 10 or the lower case 20 generates a suction force to suck air in the vacuum chamber 30 through the suction port 32 connected to the vacuum pump 25. . Accordingly, the vacuum processing of the vacuum packaging paper placed in the vacuum chamber 30 is performed.

When the degree of vacuum in the vacuum packaging paper reaches a predetermined standard, heat sealing is performed using the heater 40. When the sealing is completed, the vacuum pump 25 and the heater 40 are stopped and the packaging of the vacuum packaging is completed. do.

In such a conventional vacuum packaging machine, the vacuum pump 25 is composed of a cylinder and a motor for driving the same, by assembling the motor in a separate cylinder to suck air from the vacuum chamber 30. Due to the reciprocating motion of the cylinder in the suction process, noise is generated in the vacuum packaging machine, which has a problem that the noise is increased the faster the rotational speed of the motor.

In the conventional vacuum packaging machine, since only the air in the vacuum chamber 30 is sucked, in order to vacuum the plastic vacuum container, it is necessary to generate a vacuum using a separate vacuum device, or through the separate solenoid valve and the vacuum pump 25. The vacuum vessel was connected.

However, in such a case, not only unnecessary power is wasted, but also electricity is operated, there was a fear of malfunction.

The present invention is to solve the problems of the conventional vacuum packaging machine as described above, it is an object of the present invention to provide a vacuum packaging machine without noise while making a faster vacuum with a low-cost motor.

In addition, the present invention provides a reliable connection means while being easily connected to a vacuum container as well as to a vacuum container.

Furthermore, an object of the present invention is to mechanically configure a flow path switching means of a vacuum container and a vacuum packaging pack, and to provide a vacuum packaging machine which is inexpensive and free from failure.

The present invention achieves the above object through the following configuration.

The present invention is the case body; A cover connected to the case body and movable; A vacuum chamber formed on at least one of the case body and the cover and connected to the vacuum pump; And a sealing means formed in the case body, wherein the case body and the cylinder of the vacuum pump provide a vacuum packaging machine formed of one component.

In this case, the cylinder of the vacuum pump may be formed on the upper surface of the case body.

In the present invention, the vacuum pump is formed in the case body and the cylinder to form a cylinder appearance; A cylinder inner wall part including an intake hole and an exhaust hole on an upper surface thereof and disposed inside the cylinder; A valve portion disposed on an upper surface of the inner wall of the cylinder and including an opening and closing portion corresponding to the intake and exhaust holes, respectively; And a passage member disposed above the valve portion and including an intake passage and an exhaust passage.

The opening and closing portion is formed of a flexible member, and includes a first opening and closing portion at a position corresponding to the intake hole and a second opening and closing portion at a position corresponding to the exhaust hole, and the opening and closing portion moves in the vertical direction according to the operation of the cylinder rod. The first opening and closing portion closes the intake hole when the cylinder rod is raised and opens the intake hole when the cylinder rod is lowered, and the second opening and closing portion opens the exhaust hole when the cylinder rod is raised, and the cylinder rod is lowered. The exhaust hole can be closed at the time.

On the other hand, in the present invention, the case body or cover may be connected to a hole for vacuuming the container or a hole for connecting the hose for vacuuming the container.

In addition, a hole for connecting the hose for vacuuming the container or a hose for vacuuming the container is formed in the case body, and the case body has a flow path connected to the cylinder and a flow path connected to the vacuum chamber or the vacuum container. A flow path switching valve for switching the flow path to communicate with each other may be formed.

In addition, the flow path switching valve is connected to the selector formed on the outer surface of the case body, the flow path can be switched to communicate with the flow path connected to the vacuum chamber or the vacuum container by moving integrally in accordance with the operation of the selector. .

Further, the flow path switching valve is a valve body; A rotating part integrally connected to the selector inside the valve body and including a protrusion; A plurality of flow paths provided in the valve body; And a blocking member provided inside the flow path and opening the flow path when pressed by the protrusion of the pivoting part.

Alternatively, the present invention has a hole is formed in the cover is connected to the hose for vacuuming the container, the hole is connected to the inner chamber inside the cover, the inner chamber may be in communication with the vacuum chamber.

In this case, a sealing member for blocking the hole is formed in the inner chamber, and the sealing member may be configured to open when the hose is connected.

In addition, one end of the sealing member is mounted, the other end of the connecting member is mounted to the elastic member is rotatably fixed to one side of the cover, when the hose flows into the hole, the sealing member is The sealing of the hole is released, and the sealing member can seal the hole when the hose is pulled out.

Alternatively, the present invention may be formed with a holding means for fixing the vacuum member in a position in front of the vacuum chamber in the case body.

In addition, the case body may be provided with a guide groove along a width direction of the vacuum chamber at a position in front of the vacuum chamber, and at least one of the holding means may be configured to be movable along the guide groove provided in the case body. .

At this time, the holding means may be provided with a roller on the surface in contact with the vacuum member.

The present invention, through the above configuration, it is possible to provide a vacuum packaging machine without noise while making a vacuum faster with a low-cost motor.

In addition, the present invention can be easily connected to the vacuum packaging as well as the vacuum packaging, while providing a reliable connection, furthermore by mechanically configuring the flow path switching means of the vacuum container and the vacuum packaging pack, providing a cheap and trouble-free vacuum packaging machine do.

1 is a perspective view of a conventional vacuum packaging machine.

2 is an exploded perspective view of the vacuum packaging machine of the present invention.

3 is a bottom perspective view of the case body of the vacuum packaging machine of the present invention.

4A is a view of the 'B' portion of FIG. 3 viewed from another direction in a state where a motor is mounted;

4B is an exploded view of the cylinder,

4C is a cross sectional view of the cylinder,

4D and 4E are operation diagrams showing the operation of the valve unit according to the rise and fall of the cylinder head.

5: A is sectional drawing seen from the line A-A of FIG. 2, and FIGS. 5B-5D are a schematic diagram of a flow path switching means.

6 is a perspective view of another embodiment of the present invention.

7 (a) and 7 (b) are sectional views of the cover of FIG. 6 seen from the line C-C.

8 is a perspective view of another embodiment of the present invention.

FIG. 9A is a cross-sectional view of the case body of FIG. 8 seen from the line D-D, and FIG. 9B is another embodiment of the holding means.

* Description of the sign *

100: vacuum packing machine 110: cover

120: internal chamber 150, 270: hose insertion port

160: hose 200: case body

210: vacuum chamber 215: suction port

218: sealing means 219: groove

220: insertion hole 221, 225: holding means

230: correspondence surface 240: upper surface

241 and 281 bracket 245 cylinder

246a: intake hole 247a: exhaust hole

248: valve portion 249: passage member

250: LED 280: motor

283, 286: Pulley 287: Cam

288 piston 289 cylinder head

300: bottom plate

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the present invention.

The same reference numerals are used for the same configuration.

2 is an exploded perspective view of the vacuum packaging machine 100 of the present invention. The vacuum packaging machine 100 has an exterior with a cover 110 in which a protrusion 115 is mounted and rotatably fixed to a main body consisting of a case body 200 and a lower plate 300 and an insertion hole 220 of the case body 200. Is formed.

A vacuum chamber 210 is formed at the front of the case body 200, and a suction port 215 is formed in the vacuum chamber 210 to suck air in the vacuum chamber 210. In the front of the vacuum chamber 210, a sealing means 218 for sealing a vacuum-packed plastic bag or the like is formed. The vacuum chamber 210 is formed by the bottom surface of the cover 110 abuts on the corresponding surface 230 of the case body 200.

The upper surface 240 of the case body 200 selects an LED 250 indicating a use display state, an operation switch 251 for operating the vacuum packaging machine 100, and a time for vacuuming a vacuum container and a time for vacuuming a plastic pack. The selector 260 and the hose insertion hole 270 are formed.

3 is a bottom perspective view of the case body 200 of the present invention. As shown in FIG. 3, the case body 200 has an upper surface 240 protruding therein, and has a space in which the vacuum chamber 210 and the sealing means 218 are mounted, and is connected to the cylinder 245 to form the vacuum chamber. A suction port 215 is arranged to vacuum 210.

In the present invention, the cylinder 245 is injection molded in one piece with the case body 200, for example. In the present invention, the cylinder 245 is formed in the direction of gravity to be easily formed as a case body 200 and one component.

FIG. 4A is a view of the 'B' portion of FIG. 3 viewed from another direction with a motor mounted thereon, FIG. 4B is an exploded view of the cylinder, FIG. 4C is a cross-sectional view of the cylinder, and FIGS. 4D and 4E are shown in FIG. The operation of the valve portion as the cylinder head is raised and lowered is shown.

As shown in FIGS. 4A and 4C, the inlet hole 248a and the exhaust hole 247a are formed on the upper surface of the cylinder 245 formed of the case body 200 and one component, and are in close contact with the inner wall of the cylinder 245. A cylinder inner wall portion 245 is disposed, and a piston 288 including a cylinder head 290 inside the cylinder inner wall portion 245a and moving up and down inside the cylinder 245 is disposed. Although not shown, the cylinder head 290 may be connected to the piston 288 by means such as a pin (not shown).

Meanwhile, a motor 280 is disposed on the case body 200, and a pulley 283 is mounted on the drive shaft 282 of the motor 280 to rotate together with the drive shaft 282 of the motor 280. Meanwhile, the cam 287 to which the piston 288 is connected is also connected to a pulley 286 having a rotation shaft 285, and the pulley 286 to which the piston 288 is connected is connected to the pulley 283 connected to the motor 280. Connected by connecting means such as a belt, the rotation of the motor 280 is converted into reciprocating motion of the piston 288 through the pulleys 283 and 286 and the cam 287 connected thereto.

The cam 287 is configured at a position away from the center of the rotation shaft 285. The cam 287 has a general configuration, and the principle thereof is known, and thus detailed description thereof will be omitted.

On the other hand, the pulley 283 connected to the motor 280 has a diameter smaller than the pulley 286 connected to the rotation shaft 285, whereby the piston 288 has a reduced number of round trips than the rotation speed of the motor 280 .

In the present invention, since the cylinder 245 is integrally formed with the case body 200, the cylinder 245 may have a large volume as compared with a separately manufactured part, and also may be generated by the cylinder 245 because it is a single part with the case body 200. Vibration and noise can be reduced. In addition, since the cylinder 245 can be made large, the pulleys 283 and 286 can decelerate the motor at a sufficient speed. Accordingly, the noise and vibration generated by the reciprocation of the piston 288 can also be greatly reduced. .

Specifically, as shown in FIGS. 4B and 4C, a cylinder inner wall part 245a is disposed on an inner wall of the cylinder 245 formed together with the case main body 200, and an upper surface of the cylinder inner wall part 245a is disposed on the vacuum pump. The valve portion 248 and the passage member 249 are positioned, and the surface portion 252 is disposed to have a shape corresponding to the outer surface of the case body 200.

The valve portion 248 includes a first opening and closing portion 248a at a position corresponding to the intake hole 246a and a second opening and closing portion 248b at a position corresponding to the exhaust hole 247a. In addition, the passage member 249 includes an intake passage 246b communicating with the vacuum chamber 210 on the first and second openings 248a and b, respectively, and an exhaust passage 247b communicating with the outside. Is formed.

The cylinder inner wall portion 245a includes a stop portion 246c for stopping the intake hole 246a with the first opening and closing portion 248a of the valve portion 248 opened with the intake hole 246a open. The furnace 247b includes a stop part 247c for stopping the second opening / closing part 248b of the valve part 248 to open the exhaust hole 247a.

The valve portion 248 and the first and second opening and closing portions 248a and b may be formed of a flexible member, and thus may be bent in the operation of the piston 288 inside the cylinder 245. As shown in FIG. 4D, when the piston 288 descends to suck air into the cylinder 245, the first opening / closing portion 248a at the upper portion of the intake hole 246a is bent to the stop portion 246c to intake air. The passage 246b is opened, and the second opening / closing portion 248b at the upper portion of the exhaust hole 247a contacts the cylinder inner wall 245 to close the exhaust passage 247b, so that the air in the vacuum chamber 210 enters the intake passage. It may enter the cylinder 245 through the 246b and the intake hole 246a.

On the contrary, as shown in FIG. 4E, when the piston 288 rises and the air inside the cylinder 245 is discharged, the first opening / closing portion 248a of the upper portion of the intake hole 246a contacts the passage member 248. The intake passage 246b is blocked, and the second opening / closing portion 248b at the upper portion of the exhaust hole 247a is bent to the stop portion 247c of the exhaust passage 247b, thereby opening the exhaust passage 247b, and thus the cylinder 245 Inner air may escape to the outside through the exhaust passage 247b.

As described above, the operation of FIGS. 4D and 4E is repeated, so that the air inside the vacuum chamber 210 escapes, whereby the vacuum member may also be vacuumed.

5 is a cross-sectional view taken along the line A-A of FIG. 2 of the present invention.

As shown in FIG. 5, the selector 260 disposed on the upper surface 240 of the case body 200 may adjust the rotation. The selector 260 is connected to a flow path switching valve accommodated in the case body 200 through the connection member 261.

The flow path switching valve is integrally connected to the selector 260 in the valve body 268 and the valve body 268, and includes a rotation part 262 including a protrusion 263; The plurality of flow paths 264, 265, and 266 provided in the valve body 268 and the flow paths 264 and 265 are provided in the valve body 268, and the flow paths are pressurized by the protrusion 263 of the pivoting part 262. It comprises a; blocking member (264a, 265b) to open.

The blocking members 264a and 265a have a smaller diameter than the flow paths 264 and 265, and are fixed to the support parts 264c and 265c and are formed by elastic members 264b and 265b that press the blocking members 264a and 265a. The communication between the flow passage 267 and the flow passages 264 and 265 inside the valve body 268 is blocked.

The flow passages 264 and 265 have a diameter smaller than the blocking members 264a and 265a at the end thereof, and the inlet 264d is formed so that the spherical blocking members 264a and 265a protrude and block the flow passages 264 and 265. 265d).

The blocking members 264a and 265a are normally pressed into the inlets 264d and 265d by the elastic members 264b and 265b to block the flow paths 264 and 265, but the protrusions 262 of the pivoting portion 262 263 is pressed by the support parts 264c and 265c of the flow paths 264 and 265, and the said inlet 264d and 265d is opened. This view is well illustrated in FIGS. 5C and 5D.

As shown in FIGS. 5C and 5D, when the blocking members 264a and 265a are pressed by the protrusion 263, the flow paths 264 and 265 are opened by the flow path 267 of the valve body 268. Therefore, the desired flow path can be selectively connected. In this embodiment, three channels are selectively connected, but four or more channels may be selectively connected.

As such, the flow path switching valve rotates the rotating part 262 formed therein to selectively communicate the flow path 267 with the flow paths 264 and 265, so that the flow path 266 in the cylinder 245 is the vacuum chamber 210. ) Can be selectively communicated with the flow path 265 is connected to the hose insertion hole 270 is connected to the flow path 264 and the vacuum container. This flow path switching valve has the advantage that there is no fear of failure by mechanical means, and there is no waste of power.

6 shows another embodiment of the present invention. The vacuum packaging machine 100 shown in FIG. 6 is the same in that the case body 200 and the cylinder 245 are formed as one component, but the hose insertion hole 270 (see FIG. 2) is provided in the case body 200. Rather than being disposed on the upper surface, the hose insertion hole 150 is formed in the cover 110 is different. In addition, the embodiment of FIG. 6 is different from the embodiment of FIGS. 2 to 5 in that there is no selector 260, and the other internal configuration is the same as that of the embodiment of FIGS.

As shown in FIG. 6, in this embodiment, a hose insertion hole 150 into which a hose connected to the vacuum container is inserted is formed on the upper surface of the cover 110.

Sectional views of the cover 110 of this embodiment as seen from line C-C are shown in Figs. 7 (a) and 7 (b). As shown in FIG. 7, in this embodiment, an inner chamber 120 is formed in the cover 110, and the hose insertion hole 150 communicates with the inner chamber 120.

The hose insertion hole 150 is sealed in the inner chamber 120 by the sealing member 151 before the hose 160 connected to the vacuum container is inserted. A fixing member 152 is formed in the inner chamber 120, and the connecting member 154 is rotatably fixed in the form of a seesaw with the pin 153. The sealing member 151 is connected to one end of the connection member 154, and the elastic member 155 is connected to the other end.

Accordingly, although the sealing member 151 seals the hose insertion hole 150 before the hose 160 is inserted, the sealing of the sealing member 151 is released by the insertion of the hose 160, and the hose 160 is inserted into the hose 160. Through the vacuum vessel and the inner chamber 120 is able to communicate.

As shown in FIG. 7 (b), the through-hole 122 is formed in the inner chamber 120 of the cover 110, which is connected to the vacuum chamber 210. Therefore, when the hose 160 is inserted into the hose insertion hole 150 while the cover 110 is closed, the vacuum container, the inner chamber 120 and the vacuum chamber 210 are connected, and the vacuum container through the suction port 215. Air can be inhaled.

On the contrary, when the hose 160 is not inserted, even though the inner chamber 120 is sealed even though it is connected to the vacuum chamber 210, there is no effect on the role of the vacuum chamber 210.

This configuration allows the user to connect the vacuum container hose to the vacuum packager 100 without a separate flow path switching means or a configuration such as a solenoid valve, so that the vacuum packager 100 'can serve as a vacuum device for the vacuum container. Make sure In addition, the above configuration can be used semi-permanently in that it is not only a simple but mechanically high operational reliability, but also requires a separate power source.

8 shows another embodiment of the present invention.

As shown in FIG. 8, the embodiment of FIG. 8 is identical to the embodiment of FIG. 2 except that it includes hold means 221, 225 disposed between the vacuum chamber 210 and the sealing means 218. Therefore, the embodiment of FIG. 8 will be described based on differences from the embodiment of FIG. 2.

In this embodiment, the holding means 221, 225 are arranged between the vacuum chamber 210 of the case body 200 and the sealing means 218, which hold means 221, 225 are plastic packs for vacuuming. When this comes in, the holding means (221, 225) serves to press the portion of the plastic pack to fix the position of the plastic pack.

One of the holding means 221, 225 is fixedly fixed at a position corresponding to the end of the sealing member 218, and the other 225 is movable along the groove 219.

Accordingly, the holding means 221, 225 can fix the plastic pack by moving the movable holding means 225 according to the plastic pack of various sizes.

 9A is a cross-sectional view showing a cross section of these holding means 221, 225.

As shown in FIG. 9A, the holding means 221 is formed integrally with the case body 200. The base 222 is integrally formed on the corresponding surface 230 of the case body, and the head 223 including the pressing portion 223b and the pressing portion 223a is connected to the base 222.

The pressing portion 223b normally contacts the corresponding surface 230, but when the user presses the pressing portion 223a, the head 223 rotates around the base 222, and the pressing portion 223b and the corresponding surface are pressed. There is a gap between the 230, and the edge of the plastic pack is inserted into the space therebetween.

On the other hand, the holding means 225 includes a base 226, the base 226 includes a corresponding portion 226a corresponding to the shape of the groove 219, the bottom portion 227 in the lower portion of the base 226 Is connected, and a head 228 including a pressing part 228b and a pressing part 228a is connected to an upper portion of the base 226.

The base 226 has a width that is wider than the width of the groove 219 except for the corresponding portion 226a, which is the same for the bottom 227. The holding means 225 also includes an elastic member 229 to be stably held in the groove 219. Therefore, the holding means 225 moves horizontally along the groove 219 without falling into the groove 219. This is possible.

The pressing part 228b of the holding means 225 normally touches the corresponding surface 230, but when the user presses the pressing part 228a, the head 228 rotates around the base 226, and the pressing part A gap is formed between the 228b and the corresponding surface 230, and the edge of the plastic pack is inserted into the space therebetween.

In the present invention, since both sides of the plastic pack can be fixed to the holding means (221, 225), the user can be fixed to the holding means (221, 225) after positioning the end of the plastic pack in the vacuum chamber 210 Therefore, there is no fear that the end of the plastic pack will come out of the vacuum chamber 210 when covering the cover 110.

Therefore, the vacuum packaging machine 100 of the present invention can make it easier for the user to vacuum the plastic pack. In particular, since the holding means 221, 225 are arranged on both sides, it is possible to stably fix the plastic pack in place.

In addition, the holding means 225 in the present invention can be moved horizontally along the groove 219 formed in the case body 200, which can provide a stable fixing regardless of the plastic pack size.

In this embodiment, one hold means 221 is fixed and the other hold means 225 is formed to be movable, but both of the hold means 221 and 225 may be formed to be movable. .

In addition, in this embodiment, the holding means 221, 225 is formed of a resin and pressurized and returned to the elasticity of the resin itself, but may be pressed and returned through separate mechanisms and elastic members.

9b shows another embodiment of the hold means 225 of the present invention.

In the holding means 225, the head 228 'has no pressing portion 228a, unlike the embodiment of Fig. 9A, and the pressing portion 228' for pressing the connection member 228'a made of resin and the vacuum member. b) and a roller 228'c provided on a surface in contact with the vacuum member of the pressing portion 228'b.

With this configuration, the vacuum member is advantageous to enter from the side, but may be difficult to move to the front and rear surfaces, which not only does not require the user to hold the vacuum member during vacuum, but also the vacuum member in the vacuum packaging machine. It is easy to fix the user convenience can be greatly increased.

Claims (14)

Case body; and A cover connected to the case body and movable; A vacuum chamber formed on at least one of the case body and the cover and connected to the vacuum pump; And It includes a sealing means formed in the case body, And the cylinder of the case body and the vacuum pump is formed of one component. The method of claim 1, And a cylinder of the vacuum pump is formed on an upper surface of the case body. The method of claim 2, The vacuum pump is A cylinder formed in the case body and forming a cylinder shape; A cylinder inner wall part including an intake hole and an exhaust hole on an upper surface thereof and disposed inside the cylinder; A valve portion disposed on an upper surface of the inner wall of the cylinder and including an opening and closing portion corresponding to the intake and exhaust holes, respectively; And The vacuum packaging machine, characterized in that disposed on top of the valve portion, comprising a passage member including an intake passage and an exhaust passage. The method of claim 3, wherein The opening and closing portion is formed of a flexible member, and includes a first opening and closing portion at a position corresponding to the intake hole and a second opening and closing portion at a position corresponding to the exhaust hole, The opening and closing portion is configured to move in the vertical direction in accordance with the operation of the cylinder rod, the first opening and closing portion closes the intake hole when the cylinder rod rises and opens the intake hole when falling, the second opening and closing portion of the cylinder rod The vacuum packaging machine, characterized in that for opening the exhaust hole, and closing the exhaust hole when the cylinder rod is lowered. The method of claim 1, The case body or cover is a vacuum packaging machine, characterized in that the hose for vacuuming the container is connected to the hose for vacuuming the container. The method of claim 5, A hole for connecting the hose for vacuuming the container or a hose for vacuuming the container is formed in the case body, And a flow path switching valve for switching the flow path so that the flow path connected to the cylinder communicates with the flow path connected to the vacuum chamber or the vacuum container. The method of claim 6, The flow path switching valve is connected to a selector formed on an outer surface of the case body, and moves in an integral manner according to the operation of the selector to switch the flow path so that the flow path connected to the cylinder communicates with the flow path connected to the vacuum chamber or the vacuum container. Vacuum packing machine. The method of claim 7, wherein The flow path switching valve is Valve body; A rotating part integrally connected to the selector inside the valve body and including a protrusion; A plurality of flow paths provided in the valve body; And a blocking member provided inside the flow passage and opening the flow passage when pressed by the protrusion of the pivoting portion. The method of claim 5, And a hole through which the hose for vacuuming the container is connected to the cover is formed, the hole is connected to an inner chamber inside the cover, and the inner chamber is in communication with the vacuum chamber. The method of claim 9, A sealing member is formed in the inner chamber to close the hole, and the sealing member is opened when the hose is connected. The method of claim 10, One end of the sealing member is mounted, the other end of the connecting member is mounted to the elastic member is rotatably fixed to one surface of the cover, And the sealing member releases the sealing of the hole when the hose flows into the hole, and the sealing member seals the hole when the hose is pulled out. The method of claim 1, And a holding means for fixing the vacuum member at a position in front of the vacuum chamber in the case body. The method of claim 12, The case body is provided with a guide groove along the width direction of the vacuum chamber at a position in front of the vacuum chamber, At least one of the holding means is a vacuum packaging machine, characterized in that configured to be movable along the guide groove provided in the case body. The method of claim 13, And said holding means comprises a roller on a surface in contact with the vacuum member.

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