JPS6346340Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a packaging device, and more particularly, to a packaging device in which a needle is inserted into a completely sealed packaging bag to suck out the internal air, and the perforation is closed with a label.

Conventional technology When palletizing completely sealed packaging bags,
If completely airtight packaging bags are not sufficiently vented, they often break when stacked several times.

In addition, as a method for deaerating a sealed packaging bag, Japanese Patent Application Laid-Open No. 57-68323 discloses that both outer surfaces of the packaging bag are suctioned using a suction tool, and a perforating tool attached to the suction tool is used to deaerate the bag. Punch an air vent hole using
A vacuum forming machine inside a packaging bag has been proposed that removes air from inside the packaging bag through the hole, but in this device, the perforation tool is fixed to a suction tool that holds the packaging bag. When the punching tool is inserted into the packaging bag, the presence of the punching tool makes it difficult for air to escape from the air vent hole.
If the punching tool is removed, the suction will also come off, so a powerful vacuum pump is required to evacuate the air inside the packaging bag. Since both sides around the hole are sealed by welding to each other, this cannot be used when the entire packaging bag is filled with items to be packaged.

Problems to be solved by the invention In view of the above-mentioned points, the present invention perforates only one side of a completely sealed packaging bag with a needle, and allows the needle to move in and out of the pressing device, thereby making it possible to solve the problem in a short time. To provide a packaging device capable of sufficiently deaerating a packaging bag by deaerating the bag and then reliably closing the perforation with a label.

Means for Solving the Problems In order to achieve the above object, the packaging device of the present invention includes a packaging bag transfer device, a packaging bag transfer device, which is provided facing the packaging bag transfer device so as to be able to approach and separate from the device, and is surrounded by a pressing body and an interior. A pressing device having a hollow portion at the inside thereof, and a needle of the pressing device, which is provided in the hollow portion inside the pressing device so as to be able to freely move in and out of the pressing device, punctures only one side of the packaging bag when pressing the packaging bag. a suction device that is connected to a hollow part inside the pressing device and is activated after the needle enters the pressing device under the state in which the pressing body of the pressing device presses the packaging bag; The present invention has a configuration characterized in that a label pasting device is arranged immediately after the device, facing the packaging bag transfer device, and pasting a label on the perforated portion of the packaging bag.

Embodiments Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

In FIG. 1, A is a first packaging bag transfer device, which is composed of a machine frame 2 and a transfer conveyor 3 supported by the machine frame 2. It is sequentially transferred from the right side to the left side.
A diaphragm 5 to which a chorus motor 4 is attached is arranged above the transfer conveyor 3. The diaphragm 5 is pivotally supported by the machine frame 2 via an arm 6, and is swingably mounted.

The completely sealed packaging bag 1 being transferred on the transfer conveyor 3 is vibrated from above, compacting the contents of the packaging bag and shaping it into a flat shape.

In this way, the completely sealed packaging bag 1 that has been shaped flat is sent to the second packaging bag transfer device B.

As shown in FIG. 2, the second packaging bag transfer device B
has a machine frame 7 and a transfer conveyor 8 supported by the machine frame 7. Phototubes 9 and 30 are disposed on the sides of the transfer conveyor 8.
When it is detected that the flat, completely sealed packaging bag 1 flowing on the transfer conveyor 8 has reached a predetermined position, the transfer conveyor 8 is configured to stop.

A pressing device C is attached to the machine frame 7 facing the transfer conveyor 8. Next, the pressing device C will be explained with reference to FIG. 10 is an air cylinder, which is attached to the machine frame 7, and the air cylinder 1
A fixing plate 12 is fixed to the tip of the piston rod 11, and the fixing plate 12 has support rods 13a, 1
3b, 13c, and 13d are slidably supported. 14a, 14b, 14c, and 14d are guide support tubes into which the support rods 13a, 13b, 13c, and 13d are vertically movable;
Fixing plates 15 and 16 are fixed to the tips and other ends of a, 14b, 14c, and 14d. A spring 17 is inserted between the fixed plate 12 and the fixed plate 15, and the fixed plate 15 is always pressed downward.
A pressing body 19 having a suction port 18 on its outer periphery is fixed to the fixed plate 16, and a hollow portion communicating with the suction port 18 is formed inside the pressing body 19.

In the hollow part inside the pressing device C, the pressing device C
A perforation device D is provided which is movable in and out of the bag and has a needle that perforates only one side of the packaging bag when the pressing body 19 of the pressing device C presses the packaging bag. The perforation device D consists of an air cylinder 20 mounted on a fixed plate 16 and a needle 22 attached to the tip of a piston rod 21 of the air cylinder 20. The piston rod 21 penetrates the fixed plate 16 and is configured to be freely removable. There is.

Next, the operations of the pressing device C and the punching device D will be explained. When the phototube 9 detects the position of the packaging bag 1 and the transfer conveyor 8 stops, the air cylinder 10 is activated and the rod 11 is lowered to remove the fixing plate 1.
2, the fixed plate 15 is pushed through the spring 17, and the guide support cylinders 14a, 14b, 14c, 14
d. The pressing plate 19 presses the packaging bag via the fixing plate 16. Next, the air cylinder 20 is activated to lower the rod 21, and the needle 22 attached to the tip makes a hole in the packaging bag 1. After making the hole, the air cylinder 2
0 to raise the rod 21 and remove the needle 22 from the packaging bag 1.

Next, the packaging bag 1 is degassed by suction from the suction port 18. When the degassing is completed, the air cylinder 10
is activated, the rod 11 rises, and the transfer conveyor 8
is up and running again.

25 in FIG. 2 is a leveling roll, which is used for the machine frame 7.
The arm 27 is pivotally supported via an arm 27 on a bracket 26 fixed to the arm 27, and the arm 27 is swingably attached. The deaerated packaging bag 1 moving on the transfer conveyor 8 is flattened by the leveling roll 25.

Next, a labeling device E for closing the holes in the packaging bag 1 will be described. The labeling device E is attached to the machine frame 7 facing the transfer conveyor 8, and as shown in FIGS. 2 and 4, a labeling paper winding roll 32 attached to a shaft rod 31, Peeling plate 3 that peels off the label 33 from the label pasting paper
4. It has a shaft 36 for winding up the pasted paper 35 from which the label 33 has been peeled off, a label pressing roll 37 for pressing the peeled label 33 against the packaging bag 1, and the like.

As shown in FIG.
It is attached via 9. The intermediate member 38 is
It has a shaft 40 at one end. Reference numeral 41 denotes a solenoid fixed on the support member 44, and its movable shaft 41a is connected to one end of a fixture 45 inside the support member 44 by fixtures 42 and 43. The support member 44 is attached to a bracket 26 fixed to the machine frame 7. Axis 40 of the intermediate member 38
penetrates one side of the support member 44 and connects the support member 44
It is fixed to the other end of the fitting 45 inside.

Next, the operation of the label pasting device E will be explained.

When the phototube 30 detects that the packaging bag 1 moving on the transfer conveyor 8 has reached a predetermined position and the transfer conveyor 8 stops, the shaft 36 rotates and the labeling paper 35 is attached by one label 33. move by the length of . The label 33 is stiff, so the peeling plate 3
4, peeling begins from the adhesive paper 35 that is bent across the peeling plate 34. When about half of the label 33 is peeled off, the solenoid 41 is activated and its movable shaft 41a moves in the axial direction, causing the attachments 42, 43,
Rotating the shaft 40 of the intermediate member 38 via 45,
A presser roll 37 attached to the tip of the intermediate member 38 via an arm 39 is lowered, and the label 33 is pressed against the perforated portion of the packaging bag 1 and affixed. Then, when the transfer conveyor 8 starts operating again, the label 3
3 is adhered to the packaging bag 1 to the end by the press roll 37, and then, when the solenoid 41 is de-energized, the press roll 37 releases the pressure on the packaging bag 1.

Reference numeral 50 denotes a pressure roll provided facing the transfer conveyor 8, which is pivotally supported by a bracket 26 fixed to the machine frame 7 via an arm 51, and is always kept downward by a spring 52 connecting the bracket 26 and the arm 51. It is energized, and when the packaging bag 1 passes, the label pasted by the label pasting device E is pressed and brought into close contact with the packaging bag 1.

Effects of the invention As described above, the present invention, when perforating a completely sealed packaging bag with a needle, punctures only one side of the packaging bag with the needle while the pressing device presses the packaging bag and secures its position. Then, after removing only the needle from the packaging bag and sucking the air inside the packaging bag through the perforation,
Since the perforation was made to be reliably closed with the label, the air inside the packaging bag was transferred from the hole on only one side where the needle was removed to a pressing device that pressed the packaging bag and secured its position. The suction device allows for reliable deaeration in a short period of time, and therefore the bags do not break even when pallets are stacked in several stages, and transport and cargo handling operations are not hindered.

[Brief explanation of the drawing]

Fig. 1 is a partially sectional side view of a packaging bag transfer device used in the pre-process of the packaging device of this invention, Fig. 2 is a partially sectional side view of an embodiment of this invention, and Fig. 3 is a perforated FIG. 4 is a partially cross-sectional side view of the pressure suction device incorporating the device, and FIG. 4 is an exploded perspective view of the main parts of the labeling device. B...Packaging bag transfer device, C...Press device with suction device, D...Punching device, E...Label pasting device, 1...Packaging bag, 22...Needle, 33...Label.

Claims (1)

[Scope of utility model registration request] a packaging bag transfer device, a pressing device that is provided so as to be able to approach and separate from the packaging bag transfer device and has a pressing body around the periphery and a hollow part inside; a punching device having a needle that perforates only one side of the packaging bag when the packaging bag is pressed; and a punching device that is connected to a hollow part inside the pressing device, and the pressing body of the pressing device is provided so as to be able to come in and out. a suction device that operates after the needle enters the pressing device under the packaging bag pressing condition; and a suction device that is disposed immediately after the perforation device and faces the packaging bag transfer device to the perforation portion of the packaging bag. A packaging device equipped with a label pasting device for pasting labels.