JPS594884Y2 - automatic bagging equipment - Google Patents

Description

[Detailed description of the invention] This invention relates to an automatic bagging device, and its purpose is mainly to use thermoplastic resins, which have traditionally been slippery and difficult to hold, leading to inaccurate feeding and making automation a problem. An object of the present invention is to provide an automatic bagging device for film or resin film bags such as plastic bags.

Prior Art Regarding packaging devices, the following publications are known as prior art.

■Japanese Patent Application Laid-open No. 50-7687 This invention consists of a bag opening section using a magnet from the bag material tube roll side, a conveyance section consisting of a pair of upper and lower endless belts, and a cutter section consisting of a pair of upper and lower blade sections. The bag material that has been cut and opened is sent to the feeding device by a conveying section formed by a pair of endless belts, a part of the cutter consisting of a pair of upper and lower blades, and a feeding device, and is then covered by a pushing rod-shaped feeding device. After inserting the packaged article into the bag material, both ends of the bag material are cut and sealed.

In this invention, since the article to be packaged is inserted into the bag material using a rod-shaped feeding device, if the article to be packaged is hard, it can be wrapped smoothly. If the bag is made of a soft material such as a resin film, there is a problem that it cannot be inserted smoothly into the bag material.

■Japanese Unexamined Patent Application Publication No. 50-31975 This invention grips the end of the bag material with a pair of right and left gripping claws that slide back and forth, moves it forward a desired length, and then holds the rear part of the bag material with a pair of left and right gripping claws. This is a device for forming bags to be cut using a cutter attached to the tip of the arm.

In this invention, the bag material is pulled out to a desired length by a pair of left and right grasping claws that slide back and forth, so although it can be used when the bag material width is a constant width, it can be used when the bag width is various. The problem is that it cannot be used to deal with things.

(Japanese Patent Publication No. 43-5880) This invention is a packaging method in which the opening of a bag material is opened by a pair of vertically moving suction cups, and then the object to be packaged is inserted into the bag material by a pressing plate.

In this invention as well, the object to be packaged is inserted into the bag material by a pressing plate as in the above-mentioned Japanese Patent Application Laid-open No. 50-7687, so if the object to be packed is relatively hard, it can be inserted smoothly. However, if it is a soft material such as a resin film, the object to be packaged may be deformed, making it difficult to package it beautifully.

■In JP-A No. 50-133088, the opening width is varied by a pair of beak-shaped bag mouth fully open holding members for the bag opening, but since it is beak-shaped, the maximum opening width is is approximately the outer diameter of the holding material, and cannot be applied to openings with a wider opening width.

This invention solves these problems, namely, the ability to beautifully package a relatively soft packaged item such as a resin film, and to be able to handle any width of the bag material.

The outline of this invention is to open a packaging film that is continuously supplied from one side through an intake pipe, and from the other side to advance the packaged goods fitted into a pallet toward the film side together with the pallet.
On the other hand, the film wraps the packaged items along with the pallet while keeping the open state, then only the pallet is pulled down, leaving the packaged items inside the film, and finally the film is sealed around the length of the packaged items. , is for cutting.

Next, the configuration of this invention will be explained according to the attached drawings.

As shown in FIGS. 1 and 2, this invention consists of a transport mechanism 1 for packed articles (i.e. plastic bags) arranged on one side of the main frame 11, and a transport mechanism 1 for carrying covered goods (i.e. plastic bags) arranged on the other side of the main frame. A supply mechanism 2 for the tube-shaped thermoplastic resin packaging film roll, a film opening mechanism 4 that sucks the opening 3 of the film roll and opens it vertically, and a transport mechanism 1 for the packaged goods A and the film supply mechanism 2. A film transfer device that covers a film hole on a packaged article 5 that is slidably equipped and supported by a pair of left and right claw-like support members 5 that slide the film opening left and right, and then moved forward and transferred. A mechanism 6, a presser bar 7 for fixing the film roller and the bagged product A, and a bagging body 10 installed in the center.
A bagged body transfer mechanism 8 for discharging the bagged body and a seal and cutter mechanism 9 for sealing and cutting the film at a desired length provided on the left and right sides of the bagged body transferring mechanism 8.

Furthermore, each mechanism will be explained in detail.

The transfer mechanism 1, located on the right side of the device, is for transferring the packaged goods (i) into the film roll without deforming them. A rail 12, a movable trolley 14 slidably attached to the rail 12 via rollers 13, and a main frame 11 with one end fixed to the upper surface of the movable trolley 14 and protruding toward the center of the main frame 11. A pallet 15 that moves together with the pallet 15, a folded part 16 formed on the left and right sides of the other side of the pallet 15 for inserting articles to be packaged, a notch 17 provided at the center of the other end of the pallet 15, and a lower part of the main frame 11. It is separated from the cylinder 18 for sliding the movable trolley 14 provided in the central longitudinal direction.

The transfer mechanism 1 is constructed in this manner, with both sides of the article to be packed in the bag being inserted into the folded portions 16 and lightly fixed, and the movement of the moving carriage 14 being carried out by the operation of the piston 19 of the cylinder 18.
is moved from side to side to reciprocate the article to be packaged (i) together with the pallet (15) to the film opening (3).

The continuous supply mechanism 2 for the tubular thermoplastic resin film roll located on the left side of the device includes a guide plate 20 fixed to the other side of the main frame 11 and a roll-shaped film roll rotatably mounted behind the guide plate 20. The upper seal 22a of the sealing device 22H is fixed, and the lower seal 22b is moved up and down by a cylinder 23. , the lower opening of the outer bag is sealed by the sealing device 22.

Further, this sealing device forms air vent holes by sealing in a chain line shape at desired intervals.

The film opening mechanism 4 located in the center of the apparatus and opening the film holes in the upper and lower sides has a pair of upper and lower intake pipes 24, each having an intake hole in the main frame 11 at the tip of the guide plate 20, as shown in FIGS. 3 and 6. 25 is installed horizontally in a direction orthogonal to the rail 12, and a lower intake pipe 25. is provided so that it can be raised and lowered by a cylinder 26.

A fan 28 is connected to this pair of upper and lower intake pipes 24 and 25 via a duct 27.

Therefore, after the film is sucked in by the suction pipes 24, 25, it opens into the film by lowering the lower suction pipe 25.

The film transport mechanism 6 located at the upper center of the apparatus includes a pair of left and right rails 29 mounted longitudinally above the center of the main frame 11, and a moving cart 31 slidably mounted on the rails 29 via rollers 30. and a cylinder 33 fixed to the main frame 11 for operating this moving trolley 31.
arm 44 that hangs down to the left and right of the movable trolley 31 and suspends a rail 43 at the lower end;
A claw-like support member 5 for opening the film roller to the left and right, which is slidably attached to the left and right sides, a cylinder 35 provided on this movable trolley 31 so that a piston 34 can move up and down vertically, and this piston 34. The support member 5 is connected and the piston 3
It consists of a crank rod 36 that moves the support member 5 left and right along the rail 43 by vertical movement of the crank rod 4.

As shown in FIGS. 2 and 5, the presser bar 7 located above the notch 17 when the pallet 15 moves forward is pressed against the upper part of the main frame 11 so that the piston 26 moves up and down in the vertical direction at the front center of the intake pipe 24, 25. It is provided at the tip of the piston 26 of the cylinder 45 provided in the forward position, and presses the film roller with the notch 17 of the pallet 15 in the forward position.

Bagged object transfer mechanism 8 located on the underside of the pallet 15 when it moves forward
As shown in FIGS. 1 and 2, a roller 37 connected to an appropriate drive mechanism (path in the drawing) is rotatably mounted at the center of the main frame 11 in the longitudinal direction, and a melt 38 is suspended on this roller 37. The wrapped and bagged items A are discharged to the rear side of the partition.

The seal and cutter mechanisms 9 located on the left and right sides of the belt 38 are provided on the front side of the moving carriage 31, that is, on the right side of the belt 38, and are provided in front of the sealing device 40 operated by the cylinder 39 and the intake pipe 24, 25, belt 38
The cutter is cut from a pair of upper and lower cutter devices 42 operated by a cylinder 41 provided on the left side of the cutter.

In addition, in the above configuration, a gear is used instead of a cylinder.

A drive device such as a chain, pulley, or belt may be used.

Next, the functions and effects of this invention will be explained according to the order of packaging.

■ Both sides of a thermoplastic resin film bag such as a plastic bag or a packaged product made of a large number of resin films are placed on a pallet 1.
5 into the folded part 16.

■ Pay out the tube-shaped thermoplastic film roller by hand, guide it onto the guide plate 20, and then insert the tip of the tube into the intake pipe 2.
4.25 Place it on top and prepare.

■ Set the fan 28 to the operating state, and then
3, and lower seal 22b and upper seal 2
2. Seal the lower opening of the outer bag by bringing a into close contact.

- By the operation of the cylinder 26, the intake pipe 25 is raised and brought into close contact with the intake pipe 24, and then the intake pipe 25 is further lowered. The lower surface of the film roller is sucked in, and as the intake pipe 25 descends, the film roller opens upward and downward.

■ With the pair of left and right support members 5 located near the center of the rail 43, actuate the cylinder 33 to move the movable cart 31 above the intake pipe 24.25, and insert the claw-like support member 5 into the opening side of the film hole. do.

(2) By operating the cylinder 35 and lowering the piston 34, the pair of left and right claw-shaped support members 5 are slid left and right along the rail 43 by the crank lever 36, respectively.

Following the outward sliding of the support member 5, the intake pipes 24,25
When the top and bottom are open, the Filmro opens wider left and right.

That is, the opening state in this state is approximately rectangular.

(2) Operate the cylinder 18 to move the moving carriage 14 to the front of the film opening 3 together with the packaged goods.

■ Simultaneously with the above (■), the cylinder 33 is operated to move forward the movable cart 31 equipped with the support member 5 that holds the opening of the film tray, and insert the packaged goods I together with the pallet 15 into the film tray. do.

That is, while the film roller is opened vertically by the suction pipes 24 and 25, and left and right opened by the support member 5, it is moved forward by the operation of the piston 32, and the packaged goods I are advanced together with the pallet 15. Insert the bagged product (i) into the film roller with the bag open.

■ The presser bar 7 is moved to the pallet 1 by the operation of the cylinder 45.
At the notch 17 position of 5, the packaged product 1 is fixed onto the belt 38 by the presser bar 7.

Incidentally, at this time, the pallet 15 and the packaged goods A are not fixed.

[Phase] The pallet 15 is returned by the cylinder 18.

(2) Operate the cylinder 35 and move the support member 5 toward the center along the rail 43 via the crank lever 36.

(2) Activate the cylinder 39 to lower the sealing device 40 and seal the opening of the film roller.

As a result, both sides of the film are sealed.

0 Further, the cutter device 42 cuts the lower part of the seal at the lower mouth of the outer bag to form the stuffed bag 10.

0 After operating the cylinder 45 and raising the presser bar 7, the belt 38 is rotated and the bagged body 10 is dropped from the device.

Since this idea is as described above, it exhibits the following effects.

1. The above-mentioned Japanese Patent Application Laid-Open No. 50-7687, Japanese Patent Publication No. 435
In Publication No. 880, since the item to be packaged is inserted into the bag using a push rod, there is a problem that when wrapping a flexible film, it deforms and cannot be packaged reliably. However, in the present invention, the packaged product I placed on the pallet 15 is advanced together with the pallet 15, and after both are wrapped by the film roller, the packaged product I is transferred to the conveyor 38.
It is fixed together with the film roller by the presser rod 7 at the upper fixed position, that is, at the notch 17 position in FIGS. 5 and 6.

Therefore, with this invention, it is possible to reliably package a soft packaged item such as a plastic bag without deforming it.

That is, in the above-mentioned publication, it is difficult to wrap soft stuffed items such as plastic bags because they deform, but with this invention, even soft stuffed items like plastic bags can be deformed. It has the advantage of being able to be packaged neatly without any damage.

2. The above-mentioned Japanese Patent Application Laid-Open No. 50-31475 has l pairs of claws for pulling out the film, but in this invention, the fixed position is between the pair of claws.

Therefore, it is not suitable unless the film has a width that is approximately the same as the gap between the pair of claws.

That is, it is pointed out that the adaptability of the material of the bag in this invention is rather low.

However, the pair of left and right claw-like support members 5 of the present invention can be slid left and right along the rail 43 by the operation of the cylinder 35 via the crank rod 36.

Therefore, as shown in FIGS. 3 and 4, the support member 5 is inserted into the film hole opened vertically by the intake pipes 24 and 25 with the space between the two narrowed, and then the cylinder 35
By operating the support member 5 to spread the support member 5 along the rail 43, the support member 5 is locked to the left and right edges of the film roll, and in this state, the packaged product I is wrapped.

In this way, in this invention, a pair of claw-shaped left and right support members 5 are used.
From the narrowed state, it spreads along the rail 43 via the crank rod 36 due to the operation of the cylinder 35,
Since it can support the left and right inner edges of the seal opening, it has an excellent feature of wide adaptability in that it can be used with any film width, compared to the conventional technology which has a constant width claw.

3. In the present invention, the pallet 15 is moved forward,
This is because the presser rod 7 presses the bagged goods I onto the belt 38 through the notch 17 as a means for storing the bagged goods I in the film compartment and then retracting only the pallet 15. Only the pallet 15 can be reliably moved back, and reliable operation is possible.

[Brief explanation of the drawing]

The drawings show an embodiment of this invention, and Figure 1 is an overall perspective view;
Figure 2 is an overall longitudinal sectional front view, Figures 3 and 4. FIG. 5 is a perspective view of the main parts showing the operating state, and FIG. 6 is a perspective view of the film opening mechanism. 1... Transport mechanism for packed goods, 2...
Film supply mechanism, 3... Opening, 4...
... Film opening mechanism, 5... Support member, 6.
... Film transport mechanism, 7 ... Presser bar,
8...Bagged body transfer mechanism, 9...Seal and cutter mechanism, 10...Bagged body, 11...
...Main frame, 15...Palette, 16
......Folding part, 24.25...Intake pipe, 31...Moving trolley, 36...Crank rod, 43...Rail, A: Covered goods, Mouth: Film.

Claims (1)

[Scope of utility model registration request] A continuous supply mechanism 2 is provided on one side to supply a packaging film roll, which is opened via a guide plate 20 by a pair of upper and lower intake pipes 24, 25, and on the other side, the opening is filled with bags. In an automatic bagging device that stores articles A and cuts and seals packaging films after storage, a pallet 15 having a notch 17 at the tip and folded portions 16 on both sides is inserted from the other side in the direction of the intake pipe 24. A roller 3 is provided on the lower surface of the pallet 15 when the pallet 15 moves forward.
A movable trolley 31 is provided above the pallet 15 and can move forward in the direction of the intake pipes 24 and 25 from the other side. While the arm 44 is suspended, a rail 43 is suspended between both arms 44, and a pair of left and right claw-shaped support members 5 are slidably provided on the rail 43.
A crank rod 36 is connected to the support member 5 to provide a film transport mechanism 6 for opening and closing movement, and a presser bar 7 for moving up and down is provided above the notch 17 when the pallet 15 moves forward.
An automatic bagging apparatus characterized in that a packaging film sealing device 24 and a cutter device 42 are provided on one side of the belt 38, and a sealing device 40 is provided on the other side.