JPS6311046Y2 - - Google Patents

Description

[Detailed explanation of the idea] This invention relates to an improvement of a vacuum packaging machine.

Conventionally, a skin packaging machine has an upper frame and a lower frame for holding packaging films that are stacked and released using pins and claws with handles placed on a suction cup, and a foot pedal is installed on the lower side of the frame. A drum on which wire is wound is supported on the support shaft, a sprocket is installed on the shaft on the heater box provided above the suction cup, a chain whose lower end is connected to the upper frame is meshed with it, and the sprocket side of this chain is engaged. A method in which the upper end of the wire wound around the upper pulley is connected to the end is a known technique disclosed in Japanese Utility Model Publication No. 52-29086.

However, according to this conventional technology, the foot pedal must be actuated by the foot every time the skin is removed.
Lifting and lowering of the upper and lower frames by stepping on a foot pedal requires operating a wire wound around a drum and operating a chain above via a sprocket by the wire to raise and lower the upper and lower frames relative to the suction cups. The disadvantages are that the upper and lower frames cannot be wrapped in film unless the upper and lower frames are connected, released and separated using pins and claws with handles, and that it is necessary to press a foot pedal to connect wires and chains. This is not practical because even professional workers may become physically fatigued during frequent packaging operations and may be unable to wrap due to malfunctions.

Compared to this conventional skin packaging machine, the vacuum packaging machine of this invention has the following features in particular: A: Easy and positive operation of a manual handle mounted vertically on a rotating support shaft along the front side of the vacuum machine box. B: A rotating member supported on the shaft of this manual handle on both the left and right sides of the vacuum machine box, and a guide trochanter mounted on the front and back surfaces at diagonal positions of approximately 180 degrees around the circumference of this rotating member. C: The movement of the two arm levers that are pushed up and raised by this guide trochanter; D: The inner and outer elevating members move vertically up and down in the guide frame by the movement of these arm levers; E: This The above-mentioned conventional skin packaging machine is capable of continuously and reliably carrying out the vacuum wrapping operation of the packaged object using the packaging film by the lifting-related movements of the upper frame and the lower frame, which are connected and fixed horizontally on the inner and outer lifting members. This completely eliminates the drawbacks of

An embodiment of the configuration of this invention shown in the drawings will be described below.

A manual handle 19 is provided along the front side of the vacuum machine box 1 and is fitted and fixed vertically to a rotating shaft 16 supported on the vacuum machine box 1. A rotary member 15 provided is fitted and fixed so as to be rotatable in forward and reverse directions.

A guide rotor 17 is provided on the back surface of the rotary member 15 at a diagonal position approximately 180 degrees around the circumference thereof, and a guide rotor 18 is provided on the front surface of the rotary member 15, respectively.

Rotation of the rotary member 15 in one direction causes the arm lever 12 to be pushed up by the guide rotor 17 and slide upward, and rotation of the rotary member 15 in the other direction causes the arm lever 12 to be pushed up by the guide rotor 18. The arm lever 13 that rises with each rotation member 15
They are provided pivotally connected to the common pivot 14 at the left and right front sides of the vacuum box 1 so as to be located on both sides.

an inner elevating member 10 that rises due to upward sliding of the arm lever 12; and an arm lever 1;
The outer elevating and lowering members 11 that rise by upward sliding movement of the vacuum machine box 1 are fitted into guide rails of guide frames 6 and 7 that are vertically installed on both left and right sides of the vacuum machine box 1, respectively.

Further, an upper frame 4 and a lower frame 5 are horizontally connected and fixed to the upper part of the elevating member 11 and the upper part of the elevating member 10, respectively, and when the arm lever 13 is slid upward, the upper frame 4 and the elevating member 11 is raised, and by the upward sliding movement of the arm lever 12, the lower frame 5 is raised together with the elevating member 10.

When the upper frame 4 and the lower frame 5 are raised, the upper packaging film F made of thermoplastic plastic film is held between the upper and lower frames 4 and 5 on the perforated upper wall 3 of the vacuum machine box 1 in advance. It's getting old.

Furthermore, the upper limit positions of the upper frame 4 and the lower frame 5 are
The upper packaging film F, which is held between the upper frame 4 and the lower frame 5, is exposed to heat radiation by the electric heater H at this set position. This allows the material to be heated and softened in a short time.

Then, by sliding the arm levers 12 and 13 downward, the upper frame 4 and the lower frame 5, which sandwich the heated and softened upper packaging film F, are released together with the elevating members 10 and 11, and the upper frame 4 and the lower frame 5 are released together with the elevating members 10 and 11. The upper packaging film F falls onto the wall 3 under its own weight and is softened by the vacuum action on the porous upper wall 3.
At the same time, it is brought into close contact with the packaging mount 35 to complete the vacuum packaging of the item to be packaged.

The rotating member 15 is configured to rotate forward and backward at a rotation angle of approximately 160 degrees by the back and forth movement of the operating handle 19.

In addition, an electric heater H is set above the upper frame 4 and the lower frame 5 as a heating source for the packaging film F.
A slide shutter S made of a heat-resistant plate material is provided at a position immediately below and in the vicinity of the electric heater H so as to move horizontally forward and backward.As the slide shutter S advances, it blocks heat radiation directly below the electric heater H, and its backward movement blocks the heat radiation directly below the electric heater H. The part directly below is fully opened to radiate electric heat directly below.

As a horizontal movement mechanism for the slide shutter S, an endless chain C is connected to both the front and rear ends of the slide shutter S, and the drive side of the endless chain C is sprocketed to the front part of the cover frame 20. In addition, the driven side is wound around a sprocket 22 mounted on a shaft at the rear of the cover frame 20, and the sprocket 23 provided on the shaft of the drive side sprocket 21 and the vacuum machine box 1 near the front side of the rotary member 15 are connected. A transmission chain 26 as a transmission band is wound around a drive sprocket 25 provided on a shaft 24 supported by the drive sprocket 25, and further engages intermittently with a pinion 27 provided on the shaft 24 of the drive sprocket 25 to rotate it in forward and reverse directions. Fitting and fixing the sector gear 28 to the rotation support shaft 16 of the rotation member 15,
The sector gear 2 is rotated forward and backward by this rotation member 15.
8 intermittently meshes with the pinion 27 to rotate the pinion 27, thereby causing the sprocket 25 to rotate.
Then, the endless chain C is rotated via the transmission chain 26 and the sprocket 21, and the slide shutter S is moved forward and backward.

In the drawings, reference numeral 29 denotes a packaging workbench provided almost horizontally at the front upper part of the vacuum machine box 1, and is designed to easily feed the packaged items M into the porous upper wall 3 from the upper surface thereof. Reference numeral 30 denotes a bracket attached to the rear lower part of the vacuum machine box 1 so that it can be moved back and forth, and on the rear rising portion 31 of this bracket 30, the original film of thermoplastic packaging film F to be fed out onto the upper surface of the porous upper wall 3 is placed. A film 32 is supported.

Now, when vacuum packaging the article M, the electric heater H is set to generate heat, and the first
As shown in FIG. 2, an upper frame 4 on a porous wall 3,
When the lower frames 5 are arranged in an overlapping manner, the vertically positioned operating handle 19 is operated, and the lower frames 5 are tilted rearward by approximately 50 degrees around the rotational shaft 16 as shown in FIG. As shown in FIG. 4, the rotating member 15 is rotated clockwise by the same angle, and the rotating trochanter 18 simultaneously pushes up the outer arm lever 13 about the common pivot 14, and at the same time guides and rotates the outer lifting member 11. children 8,9
As a result, only the upper frame 4 is raised to a position below and close to the electric heater H which is shut off by the slide shutter S. Therefore, in the state shown in FIG.
After placing the unrolled packaging film F almost horizontally on the lower frame 5, as shown in FIG. 5, the operating handle 19 is again rotated approximately 50 degrees before the tilted angular position shown in FIG. At the same time, as shown in FIG.
The rotating member 15 is rotated in the same angle counterclockwise direction through the trochanter 18, thereby releasing the arm lever 13 on the outer side that has been pushed up by the trochanter 18, and moving this arm lever 13 together with the elevating member 11. ,
At the same time, the lifting member 11 is lowered together with the upper frame 4 while the upper frame 4 is slid downward by its own gravity, and the upper frame 4 is further lowered onto the packaging film F on the lower frame 5 on the porous wall 3, The packaging film is held and clamped between the upper frame 4 and the lower frame 5. While the packaging film F is being clamped by the upper frame 4 and the lower frame 5, the lower proximal position of the electric heater H is the slide shutter S.
Therefore, the packaging film F is not heated by heat radiation from the electric heater H in a heat generating state.

Next, with the packaging film F clamped between the upper frame 4 and lower frame 5 shown in FIGS. 5 and 6, the operating handle 19 is rotated approximately 90 degrees to the front from the vertical position shown in FIG. At the same time as the tilting and rotating, the rotating member 15 is rotated counterclockwise at the same angle via the rotating shaft 16 as shown in FIG.
This rotational movement pushes up the inner arm lever 12 via the trochanter 17, and at the same time raises the elevating member 10 by the arm lever 12, and as the elevating member 10 rises, the upper frame 4 is placed on the upper part of the lower frame 5.
The lifting member 11 superimposed on top is vertically raised via the upper frame 4 and the lifting member 10, and the upper frame 4 and lower frame 5 are moved while the packaging film F is securely clamped by these lifting members 10 and 11. is vertically raised and stopped at a position below and close to the electric heater H.

In this state, the slide shutter S is retracted by the endless chain C and the lower part of the electric heater H is open, so the packaging film F clamped to the upper frame 4 and the lower frame 5 is It is heated and softened in a short time by heat radiation. Immediately after that, as shown in FIG. 9, the operating handle 19 is activated again to the vertical position, and at the same time, the rotating member 15 is rotated clockwise by the same angle via the rotating shaft 16, and at the same time, the arm is being pushed up by the trochanter 17. Since the lever 12 is released, the upper and lower frames 4 and 5 are lowered while still clamping the heated and softened packaging film F by the mutual action of the self-gravity of the upper and lower frames 4 and 5 and the lifting members 10 and 11, thereby lifting the packaged object M. At the same time, the packaging film F is brought into close contact with the entire upper circumference of the object to be packaged M by the vacuum action of the negative pressure chamber by a vacuum pump, and at the same time, the object to be packaged M is It is brought into close contact with the lower packaging mount 35 placed thereon, and the vacuum packaging operation of the packaged object M using the packaging film F is instantaneously completed.

Then, as shown in FIG. 4, by operating the operating handle 19 again, the rotating member 15 and the arm lever 1 are
3 and the lifting member 11, only the upper frame 4 is raised to open the upper part of the lower frame 5, and the vacuum-packed article M is taken out together with the packaging film F and the lower packaging mount 35.

This vacuum packaging operation is repeatedly and continuously carried out, and a large amount of items to be packaged can be vacuum packed with high efficiency using a packaging film.

In the vacuum packaging operation, the upper frame 4 and the lower frame 5 remain clamped with the heat-softened packaging film.
At the point in time when the lifting members 10 and 11 are lowered to vertically lower the container onto the packaged object, the upper frame 4 and the lower frame 5 turn on the limit switch, turn the timer in which the evacuation time is set in advance, By the vacuum action of the negative pressure in the negative pressure chamber, the packaging film F is almost completely brought into close contact with the entire upper circumference of the object to be packaged, and the vacuum packaging operation of the object to be packaged M by the packaging film F is instantaneously completed.

In the drawing, reference numerals 33 and 34 denote both side frames of the vacuum machine box, and the outside of one side frame 34 is adapted to have an arrangement box for installing the limit switch and timer.

This device has an upper frame that clamps the upper packaging film and rises on the porous upper wall of the negative pressure chamber, and a lower frame that is arranged horizontally, and the upper packaging film is clamped by these upper and lower frames. The packaging film is raised to a position directly below the electric heater set above by raising the upper frame and the lower frame, and is heated and softened by the radiant heat of the electric heater, and is heated and softened by lowering the upper frame and the lower frame. The upper packaging film is suddenly lowered onto the packaged item placed on the perforated upper wall of the vacuum box via the lower packaging mount, and at the same time, the softened upper packaging film is wrapped by the vacuum action from the perforated upper wall. In a vacuum packaging machine, the porous upper wall 3 of the vacuum machine box 1 and the cover frame 20 are brought into close contact instantaneously to the periphery of the object and the lower packaging mount to complete the vacuum packaging of the object with the upper packaging film.
The upper packaging film F is clamped between the electric heater H set inside the upper frame 4 and the lower frame 5, which are installed to move up and down, are horizontally fixed to the upper part of the elevating member 11 on the outside. At the same time, the lower frame 5 is fixed horizontally on the elevating member 10 on the inner side, and these elevating members 10 and 11 are transferred to the guide rails of guide frames 6 and 7 installed vertically on both left and right sides of the vacuum machine box 1. The elevating member 10 is moved upwardly by the upward sliding motion of the arm lever 12 on the inner side by the operation of the manual handle 19 and the forward and reverse rotation of the rotating member 15. The guide frames 6 and 7 are surely raised vertically together with the lower frame 5, and the elevating member 11 is raised by the operation of the manual handle 19 and the upward sliding movement of the outer arm lever 13 by the rotation of the rotating member 15. The inside of the guide frames 6 and 7 can be reliably raised vertically together with the frame 4.

When this upper packaging film F is sandwiched between the upper frame 4 and the lower frame 5, the rotation of the rotating member 15 causes the trochanter 1 to
Due to the free state of the arm lever 13 due to the release action from 8 and the dead weight of the lifting member 11 and the upper frame 4, the upper frame 4 together with the lifting member 11 is lightly and reliably lowered onto the upper packaging film F of the lower frame 5. By the self-gravity of the lifting member 11 and the upper frame 4, the upper packaging film F can be reliably held between the upper and lower frames 4 and 5 in a horizontally superimposed state.

When the upper packaging film F is horizontally held between the upper and lower frames 4 and 5, the manual handle 19
This action and the rotation of the rotating member 15 apply an upward sliding force to the arm lever 12 via the trochanter 17, and the upward sliding movement of the arm lever 12 causes a lifting force to be applied to the lower frame 5 together with the lifting member 10. The lifting member 10 and the upper packaging film F held between the lower frame 5 are lifted up, and the lifting member 10 moves the lower frame 5, the upper packaging film F, and the upper frame 4 to a position immediately below and adjacent to the electric heater H. The upper packaging film F can be reliably heated and softened by the radiant heat of the electric heater H.

When the upper packaging film F, which has been heated and softened together with the upper frame 4 and the lower frame 5, is suddenly lowered onto the article placed on the perforated upper wall 3 of the vacuum machine box 1 via the lower packaging mount, manual operation is required. Rotation of the rotating member 15 by the operation of the handle 19 releases the arm lever 12 from the trochanter 17 to create a free state, and at the same time, the elevating member 10 can be freely lowered by its own weight. The lower frame 5 and the upper frame 4 horizontally sandwich the upper packaging film F which has been softened by heating due to their own weight, and the packaged item is placed on the porous upper wall 3 via the lower packaging mount. At the same time as the upper packaging film F is suddenly lowered vertically, it is possible to instantaneously vacuum-pack the packaged item using the upper packaging film F due to the vacuum action.

In this vacuum packaging work, the lower vacuum machine box 1
An upper frame 4 and a lower frame 5 that vertically move up and down between the porous upper wall 3 of When clamping the packaging film F, the upper packaging film F placed on the lower frame 5 is pressed and clamped by the weight of the upper frame 4 and the lifting member 11, so the upper packaging film F cannot be held firmly. and the upper packaging film F is heated by an electric heater H.
When heating and softening the upper packaging film F, the thermal expansion of the upper packaging film F causes the side edges to be drawn toward the center, preventing them from separating from the upper and lower frames 4 and 5, and preventing the upper packaging film F from vacuuming the packaged object. Packaging can be done almost completely.

Further, the vertical movement of the lifting member 11 with the upper frame 4 horizontally fixed to the upper part and the lifting member 10 with the upper and lower frames 5 horizontally fixed can be controlled by adjusting the rotation member 15 by precise and simple operation of the manual handle 19. This is done by reverse rotation and vertical sliding motion of the arm levers 12, 13 by the trochanters 17, 18, so that the upper frame 4 for holding the upper packaging film F and the lower frame 5 can be raised and lowered in packaging work using this type of vacuum packaging machine. The operation and the clamping operation of the upper packaging film F can be performed reliably,
Thereby, the vacuum packaging operation of a large amount of items to be packaged can be performed with high efficiency using the upper packaging film.

[Brief explanation of the drawing]

The figures show an embodiment of this invention. Fig. 1 is a perspective view of the vacuum packaging machine of this invention, Fig. 2 is a perspective view of the internal mechanism showing the same packaging operation, and Fig. 3 is shown in Fig. 1. A perspective view showing changes in the operation of the operating handle;
FIG. 4 is a perspective view of the internal mechanism showing the packaging operation as above;
Fig. 5 is a perspective view showing the operating state of the operating handle similar to the operation shown in Fig. 1, Fig. 6 is a perspective view showing the internal mechanism of the same as above, and Fig. 7 shows the operating handle approximately 120 degrees from the vertical position. FIG. 8 is a perspective view showing the state in which the upper and lower frames change due to changes in the operation of the operating handle, and FIG.
A perspective view showing the operating position of the operating handle similar to the position (vertical) of the operating handle shown in Fig. 10, in which the upper and lower frames with the heat-softened packaging film (not shown) clamped are placed on the perforated upper wall. let it fall suddenly,
FIG. 11 is a perspective view showing a state at the end of vacuum packaging of an object to be packaged. FIG. 11 is a vertical sectional view showing a state in which an object to be packaged is vacuum-packed with a packaging film on the upper wall of a vacuum machine box. DESCRIPTION OF SYMBOLS 1... Vacuum machine box, 2... Intake small hole, 3... Porous upper wall, 4... Upper frame, 5... Lower frame, 6, 7... Guide frame, 10... Inner elevating member, 11 ……
Outer lifting member, 12...Inner arm lever,
13...Outer arm lever, 15...Rotating member, 16...Rotating shaft, 17, 18...Guiding trochanter, 19...Operation handle, 20...Cover frame, H...
...Electric heater, F...Wrapping film.

Claims (1)

[Scope of utility model registration request] A porous upper wall 3 is installed in the upper part of the vacuum machine box 1 in which a small intake hole 2 for sucking air from above is provided by a negative pressure chamber provided inside, and a manual handle 19 is installed on the front side of the vacuum machine box 1. is fixedly provided on a rotating support shaft 16 supported on the vacuum machine box 1, and a rotating member 15 that rotates in forward and reverse directions on both left and right sides of the vacuum machine box 1 is fixedly provided on this rotating support shaft 16. At diagonal positions approximately 180 degrees around the circumference of the member 15, a guide rotor 17 is mounted on the back surface and a guide rotor 18 is mounted on the front surface, respectively, and the rotation of the rotary member 15 in one direction provides guidance. The arm lever 12 is pushed up by the trochanter 17 and slides upward, and the arm lever 13 is pushed up by the guide trochanter 18 and raised by the rotation of the rotary member 15 in the other direction.
an inner elevating member 10 that is pivotably mounted on the left and right front sides of the vacuum machine box 1 so as to be located on both sides of the vacuum machine box 1, and rises by upward sliding of the arm lever 12;
An outer elevating member 11 that rises when the arm lever 13 is slid upward is fitted into guide frames 6 and 7 installed vertically on both left and right sides of the vacuum machine box 1, and the elevating member 10 is The lower frame 5 and the upper frame 4 which sandwich the upper packaging film F are connected and fixed horizontally to the upper part and the upper part of the lifting member 11, respectively, and the lifting member 1 is moved by the upward sliding movement of the arm lever 13.
1 and the upper frame 4 rise, and by the upward sliding movement of the arm lever 12, the upper frame 4 and the lower frame 5 rise together with the elevating members 10 and 11. The upper frame 4 and the lower frame 5 are respectively attached to the lifting member 1.
0 and 11 as well as the porous upper wall 3 on the vacuum machine box 1.
and an electric heater H in a cover frame 20 installed above.