JPS594882Y2 - Pillow type packaging equipment - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a pillow-type packaging device.

Conventional packaging devices of this kind have a method of forming the wrapping paper into a cylinder by rolling both sides of the wrapping paper downward during the process of transporting it, so the thickness of the contents is limited to a certain degree. There was a drawback.

In other words, if the contents are extremely thin or thick, it is difficult to package them unless the wrapping paper or bag making device is replaced.

Therefore, it lacks quick response and versatility for a wide variety of products.

Furthermore, since the wrapping paper itself cannot be used to transport the goods, a separate supply conveyor is required to feed the goods at regular intervals, making the entire device large and bulky.
The drawback was that it was complicated and expensive.

The present invention aims to eliminate the above-mentioned drawbacks, and a pillow-type packaging device has been developed that rolls up the film (wrapping paper) upward, contrary to the conventional bag-making method.

For example, Japanese Utility Model Publication No. 53-5567 discloses an apparatus in which a film is formed into a round shape using a former, and then both ends of the film are polymerized and welded using a filler sealer.

However, such devices are effective only when the contents have a certain thickness, and when the contents are extremely thin,
The packaging sealing force caused the film to rise upwards, causing the contents to lose their shape.

Japanese Utility Model Publication No. 5,011,063 similarly discloses an upper welding device, which further includes a weight-adjustable guide member to prevent strain on the rising edge of the film.

However, even in this device, if the contents were extremely thin, the rolled film would be lifted upwards, causing the contents to collapse in shape and reducing the commercial value.

The present invention can eliminate these drawbacks of conventional surgical removal,
The object of the present invention is to provide a pillow-type packaging device that can wrap even extremely thin items without causing collapse of the shape, even if the item has a constant thickness.

The present invention consists of a conveyor, a packaged article mounting table that extends on the opposite side of the conveyor from the transport packaging and has a bag-making device attached to its tip that raises both sides of the wrapping paper, and a wrapping paper that is disposed above the conveyor. Pull the vehicle while holding both sides of it in a state of palms together.
A pair of pulling rollers, a pair of sealing rollers that thermally bond the joining parts of the wrapping paper, and a pair of sealing rollers that are disposed near the pulling rollers and press the part of the wrapping paper before joining by inserting their tip wedge parts. and a guide plate that moves up and down integrally with the traction roller and seal roller, and a top seal that is disposed in front of the conveyor for packaging and is arranged in front of the conveyor to thermally bond a cylindrical packaging tube in the lateral direction. This relates to a pillow-type packaging device.

Examples will be described below based on the drawings.

In FIGS. 1 to 3, 1 is a machine body, and a conveyor 2 is rotatably provided on the machine body 1.

Although the means for rotating the conveyor 2 is not shown, it is a conventional means.

Although the conveyor 2 may rotate relatively slowly, it is preferable that the conveyor 2 be an intermittent feeder that operates only when an item to be packaged is placed thereon in order to prevent wasteful feeding of wrapping paper.

Furthermore, it is preferable that the conveyor 2 is shaped like a caterpillar so that even heavy objects to be packaged can be sufficiently supported.

Reference numeral 3 denotes a packaging object mounting table having a bag making device 4 attached to its tip, and is arranged on the body 1 on the side opposite to the conveyance direction of the conveyor 2.

The wrapping paper A is wound into a cylindrical shape, and is rotatably supported by a reel 5, and is hung on the bag making machine 4 via a tension roller 6, a drive roller 7, a presser roller 8, etc.

Wrapping paper A is usually made of synthetic resin such as polypropylene, but is not limited to this as long as it can be thermally bonded.

Also, the presence or absence of product display by printing has no effect as long as the conveyor 2 operates intermittently.

As shown in Fig. 4, the bag making machine 4 is used to make both sides a of the wrapping paper A stand up and form it into a U shape. ing.

Wrapping paper A is hung on this bag making device 4 and pulled under tension in the conveyance direction of conveyor 2.

9 is a pair of traction rollers arranged above the conveyor 2;
Reference numeral 10 designates a pair of sealing rollers. First, a pair of pulling rollers 9 pulls both sides a of the wrapping paper A at the upper central part of the conveyor 2 in the conveying direction while pinching them from the left and right with their palms together, and then pulls them in the conveying direction. The parts are heated and bonded by a pair of sealing rollers 10.

The pulling roller 9 and the sealing roller 10 are placed horizontally on the same level and are designed to pinch the end portions of both measuring sections of the wrapping paper A.

Reference numeral 11 denotes a mounting base for the pulling roller 9 and the sealing roller 10, and both rollers are interlocked by a chain 12 or the like and rotated at the same speed.

The distance between both sides a of the wrapping paper A is gradually narrowed between the bag making device 4 and the pulling roller 9, and the palms are joined together.

13 is a guide plate that is inserted and pressed into the part C in front of the palms,
Its lower end is formed into a wedge shape, and this inclined portion 13a presses against the portion C before the palms are joined together.

By inserting the wedge-shaped tip, the wrapping paper A will not slip in the lateral direction even if the wrapping paper A is sufficiently pressed against the wrapping paper A. This prevents the wrapping paper A from slipping in the lateral direction.
It can effectively prevent it from rising upward due to its own elasticity.

Further, the guide plate 13 is disposed near the pulling roller 9 and moves up and down together with the pulling roller 9 and the sealing roller 10.

For this purpose, a guide plate 13 is attached to the mount 11, and the mount 11 is attached to an elevating guide frame 14 erected on the fuselage 1 so as to be able to rise and fall freely.
The mounting base 11 is adjusted in the vertical direction by the following steps.

This adjustment is performed according to the scale, so that the bag size (the height of the cylindrical packaging tube A') can be freely changed depending on the thickness of the packaged object B.

16 is a bundle for fine adjustment of the guide plate 13, 17 is a packaging tube A
This is a top seal that is heat-bonded horizontally, and can be cut at the same time as heat-bonding.

In this case, the top seal 17 includes a hot plate 19 protruding from rotating shafts 18 arranged vertically opposite each other, and a cutting blade 20 interposed in the center of the hot plate 19. The rotating shafts 18 are rotated synchronously in opposite directions so that the cutting blades 20 come into contact with each other when they come to a vertical plane passing through the axis.

The conveyor 2 and the top seal 17 operate synchronously and are placed in a relationship to thermally bond and cut the packaging cylinder A' according to the feed dimension of the conveyor 2.

However, the feeding dimension of the conveyor 2, that is, the packaging dimension in the feeding direction, can be freely changed by changing the distance between the conveyor 2 and the top seal 17 or the rotational speed of both.

Further, the top seal 17 may be one that is only thermally bonded depending on the purpose of packaging, and it is not necessarily necessary to thermally bond and cut the top seal at the same time.

The packaged item B is placed at a predetermined position on the packaged item mounting table 3.

Reference numeral 21 denotes a limit switch that is activated when the object to be packaged B is placed.

Reference numeral 22 denotes a positioning mark for the packaged item provided on the side of the packaged item mounting table 3 so that the interval can be changed.
This is to change the interval between the positioning marks 22 according to the size of the packaged item to correctly set the packaging dimensions.

That is, the position where the packaged object should be placed relative to the position of the top seal 17 is determined.

The object positioning mark 22 is provided so as to be movable in the longitudinal direction of the object mounting table 3 along a sliding bar 23 provided with a scale.

Moreover, as shown in FIG. 4, instead of this positioning mark 22, the packaged object mounting table 3 may be configured to be extendable and retractable.

In this case, the object to be packaged can always be placed on the bag making device 4.

In the same figure, reference numerals 3a and 3b are respectively separated one fixed-side packaged object mounting table and the other moving-side packaged object mounting table; 24 is a fixed-side and moving-side packaged object mounting table 3a;
A connecting plate 25 is a set screw, and 26 is a cover for elastically connecting the parts 3b to each other.

Next, the operation of this embodiment will be explained.

First, the wrapping paper A is attached to the reel 5 and hung on the bag making machine 4 via the tension roller 6, drive roller 7, press roller 8, etc.

Furthermore, the tips of both sides a of the wrapping paper A are caught by l pairs of pulling rollers 9.

In this state, when the articles B are placed one after another on predetermined positions on the article mounting table 3, the wrapping paper A is pulled with the articles B placed thereon.

That is, the wrapping paper A is made to stand up with its both sides a in the shape of B by the bag making machine 4, and is brought into a state of palms on both sides a by a pair of pulling rollers 9 above the conveyor 2, and then the palms of the wrapping paper Since it is thermally bonded by a pair of seal rollers 10, it is conveyed to the top seal 17 side while being formed into a cylindrical packaging tube A'.

Then, the top seal 17 heat-bonds the packaging tube A' in the transverse direction at the front and back of the packaged item B, and at the same time cuts it, and the packaged product is discharged as a completely packaged product.

Therefore, if the packaged item B is made to be much thinner than the previous one, first, the mounting base 11 and the pulling roller 9,
By lowering the seal roller 10 and the guide plate 13 according to the height dimension of the ultra-thin packaged object B and adjusting the height, the guide plate 13 presses the part C of the wrapping paper A before the folding of the hands. The pair of pulling rollers 9 and rail rollers 10 always push down the folded part of the wrapping paper A without changing it, and press the same part to heat bond it, so the packaging cylinder A' remains unchanged in its cross-sectional area. The extremely thin packaged object B, which is transported in a flat state, is similarly packaged.

Therefore, the height dimension of the packaging tube A' can be changed and adjusted while keeping the cross-sectional area constant, so even if the packaged item B is extremely thin or extremely thick, it can be completely wrapped without damage. It is possible.

The placement position of the packaged item B is determined by adjusting the interval between the packaged item positioning marks 22 provided on the sides of the packaged item placement table 3, or by expanding and contracting the packaged item placement tables 3a and 3b. By doing so, the top of the bag making device 4 can always be kept at its placement position.

In addition, when the top of the bag making device 4 is set as the placement position for the transported object B,
A supply conveyor 27 as shown in FIG. 6 can also be provided in series.

The supply conveyor 27 is provided with an article detector 28 such as a phototube at its end, and operates intermittently to supply the articles B to be packaged onto the bag making device 4 one by one.

Therefore, even if the articles B are randomly placed on the supply conveyor 27, they are conveniently placed on the article placement table 3 at a predetermined position.

As explained above, according to the present invention, when the wrapping paper is rolled up into a cylindrical shape, the guide plate is attached to the wrapping paper A.
Since the wrapping paper A is inserted into the folded part of the palm of the hand and presses the wrapping paper A sufficiently, lifting of the wrapping paper A can be completely prevented.

As a result, even if the contents are extremely thin, sufficient shape retention can be achieved, and the commercial value can be increased.

Therefore, the length of the conveyor 2 only needs to be the minimum length necessary.
The structure can be simple, so the entire packaging machine can be made small and
It can be concise and low-key.

Moreover, by simultaneously moving up and down the guide plate 13, the pair of pulling rollers 9, and the pair of sealing rollers 10 disposed above the conveyor 2, the wrapping paper can be formed into a cylindrical shape with a constant cross-sectional area. Since it is easy to carry out, it is possible to completely wrap the packaged item regardless of its thickness, and therefore, it is highly versatile because it can instantly package a wide variety of articles.

[Brief explanation of drawings]

Figure 1 is a side view of the pillow-type packaging device according to the present invention;
The figure is an enlarged side view of the main parts, Figure 3 is a front view taken along the line ■■ in Figure 2, Figure 4 is an explanatory diagram of the state of use, and Figure 5 is an explanatory diagram showing a retractable packaged object mounting table. FIG. 6 is an explanatory view showing the packaged article supply conveyor. 2: Conveyor, 3: Placement table for packaged items, 4: Bag making machine, 9:
Traction roller, 10: Seal roller, 13: Guide plate, 17
: Top seal, 22: Packaged object positioning mark, 24
: Connecting plate, 25: Set screw, 26: Cover, 27: Packaged article supply conveyor, 28: Article detector.

Claims (1)

[Scope of utility model registration request] 1. a conveyor; a packaged article mounting table that extends opposite to the conveyance direction of the conveyor and has a bag-making device attached to its tip that raises both sides of the wrapping paper; a pair of pulling rollers that pull the wrapping paper while pinching it into a state of folding, a pair of sealing rollers that thermally bond the folded parts of the wrapping paper; A guide plate that is brought into pressure contact by inserting the tip wedge portion, and a lift that moves the guide plate up and down together with the above-mentioned pulling roller and seal roller to bring the wrapping paper into contact with the top surface of the conveyor with a cross-sectional shape that matches the shape of the packaged items. a device;
A pillow-type packaging device comprising a top seal disposed in front of the conveyor in the conveyance direction and for laterally thermally bonding a cylindrical packaging cylinder. 2. Utility model registration claim 1, which is a structure in which the conveyor has a caterpillar shape and rotates intermittently.
The pillow-type packaging device described in Section 1. 3. The pillow-type packaging device according to claim 1 or 2 of the utility model registration claim, in which the packaged object mounting table is configured to be extendable and retractable.