JP3101348B2 - Automatic packaging machine for wrapped goods with film - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is capable of supplying a plastic film for wrapping a product with a single film roll, and is excellent in handleability and workability. it relates to automatic packaging EARLY the packaged products by the film that can.

[0002]

2. Description of the Related Art For example, in a factory for producing styrofoam products for packing electric products and the like, a plurality of styrofoam products are arranged, and the whole product is packaged with a film of plastics such as polyethylene before being shipped. At this time, automatic packaging is performed in which articles to be packaged carried into a workstation are sequentially packaged by a film continuously supplied from a film roll.

[0003] However, in this type of conventional automatic packaging, a plastics film is continuously supplied from two film rolls arranged one above the other. Therefore, it is necessary to perform the work of mounting the film rolls twice. In addition, there is a problem that the work of mounting the film roll needs to be performed in a dangerous place such as a high place and a floor, and the workability is poor. Also, since the film is supplied from above and below, it is necessary to carry the packaged product in a horizontally long state, so that the equipment becomes large and the installation space becomes large, and the width of the film used becomes large and handling is difficult. In addition, there is a problem that the cost increases.

[0004]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems and provides a single film roll for supplying a plastic film for wrapping a product. The mounting work can be performed once in a safe place, and excellent workability can be exhibited, and the packaged goods can be loaded in a vertically long state, and the film roll used is small in width and inexpensive. and it can be excellent in handling properties, and further has been completed for the purpose of providing automatic packaging EARLY the packaged products by the film which can also be achieved a significant reduction in size of the apparatus .

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention is directed to a film roll for supplying a film to a rectangular package to be carried into a work station; A film gripping member for chucking the edge of the film supplied from the upper portion of the inlet below the inlet, and a packaged product by pushing the packaged product into the work station together with the film whose edge is chucked by the film gripping member. A pushing cylinder for attaching the film to the front and top and bottom surfaces of the package, and a film extension pushed down from above the back of the article to be packaged into the work station toward the film gripping member to push the film to the three sides. A vertically movable seal bar for attaching a film to the back surface of the packaged article having A movable clamper for temporarily clamping the film end by pressing a portion slightly above the cut portion toward the seal bar when cutting the film sealed between the film bar and the film gripping member, and it is also to you characterized that the free end that is flared from both sides of the film Sowase the four sides and a side sealing mechanism to seal Sowase on both sides of the packaged article.

[0006]

Next, the present invention will be described in detail with reference to the illustrated embodiment. The drawing shows an automatic packaging machine for covering and packaging a packaged product in which a plurality of styrofoam products for packing are arranged with a plastics film such as a polyethylene film, wherein 1 is a packaged product, and 2 is a packaged product. Article 1
Conveyor 4 for carrying the product 1 into the workstation 3, a film 4 for packaging the article 1 to be packaged,
Denotes a finished product covered and packaged with the film 4, and 6 denotes a carry-out conveyor for carrying the finished product 5 to the next step.

The direction of the film 4 is switched by a guide bar 7 from a single film roll 4a disposed on the side of the apparatus, for example, so that the film 4 is continuously supplied from the upper part to the lower part of the entrance of the work station 3. In addition, immediately before the work station 3, the tension bar 8a connected to the tension cylinder 8 appropriately applies a tensile force so as not to wrinkle the film. Further, a film gripping member 9 for chucking the edge of the film 4 is provided at a lower portion of the entrance of the workstation 3, and the film 4 is guided toward the film gripping member 9 at an upper portion of the workstation 3. A vertically movable seal bar 10 is provided. The seal bar 10 guides the film from above to the film gripping member 9 so as to attach the film to the back surface of the packaged article 1 in which the film is wound on the upper and lower surfaces and the front surface in the workstation 3. A clamper 11 is provided for temporarily clamping an end of the film 4 when the film 4 is cut.
Further, the film gripping member 9 is provided with a heater 9a for heating and welding the film 4 when the seal bar 10 is lowered and the film 4 is sandwiched therebetween, and the film 4 is cut. (Not shown) is provided.

[0008] In the above-mentioned structure, the packaging operation is performed continuously in the following order. FIG. 2 shows an initial state before an article to be packaged is loaded into a work station.
The supplied film 4 is supplied from the upper part to the lower part on the front surface of the workstation 3, and
The lower end is gripped by the film gripping member 9. At this time, the tension cylinder 8 in the front part of the workstation 3 prevents the film 4 from wrinkling by applying an appropriate tensile force to the tension bar 8a.
In addition, the seal bar 10 is on standby above the workstation 3 with the clamper 11 opened.

Next, as shown in FIG. 3, the article to be packaged 1 is carried into the work station 3 with the operation of the product pushing cylinder 12 and the bottom plate pushing cylinder 13, and the upper and lower surfaces of the article 1 to be packaged. The film 4 is wound around the three front surfaces. In this case, the film guiding cylinder 14 operates and the tension cylinder 8 operates at the upper end of the article to be packaged 1 to prevent the film from wrinkling. At this time, the film roll 4a as the supply source of the film 4 is locked by the lock cylinder 15.

Next, the product pushing cylinder 12,
Bottom plate pushing cylinder 13, film guide cylinder 14
Is returned to the original position, as shown in FIG. 4, the seal bar 10 descends from above the work station 3 while guiding the film 4, and the seal bar 10 The film 4 will be covered. Next, as shown in FIG. 5, the seal bar 10 is lowered until it comes into contact with the film gripping member 9, and the upper and lower surfaces and the front and rear surfaces of the packaged product 1 are all covered with the film 4.
The joining portion of the film 4 is heated and welded by the heater 9a. At the same time, the clamper 11 of the seal bar 10 operates to clamp the end of the film 4, and the cutter 4 cuts the film 4 in this state. In addition,
During this time, the operation of the tension cylinder 8 and the lock cylinder 15 is controlled under certain conditions so as to prevent the film 4 from wrinkling.

Next, as shown in FIG. 6, an article to be packaged 1 in which a film 4 is wound on four sides of upper and lower sides and both front and rear sides has a free end projecting from both sides as shown in FIG. The left and right sides are sealed by another side seal mechanism 16 for the free end seal, and the finished product is transferred to the unloading conveyor 6. On the other hand, the seal bar 10 rises slightly while clamping the end of the film 4, and at the same time, the film gripping member 9 opens. Thereafter, as shown in FIG. 7, the seal bar 10 is lowered again, and the end of the film 4 is brought into close contact with the film gripping member 9 by the operation of the film ironing rod 10a provided below the seal bar 10. As shown in FIG. 8, the film gripping member 9 is closed again, and the end of the film 4 is chucked. Thereafter, the clamper 11 of the seal bar 10 is opened to ascend to the upper part of the work station 3 to be in the initial state shown in FIG. 2, and then the next article to be packaged 1 is carried in and the packaging process is performed in the same manner. Becomes

As described above, the present invention makes it possible to supply a film with only one film roll by providing a film gripping member and a seal bar. For example, it can be performed on the side of the apparatus, and the mounting work of the film roll can be performed extremely easily and safely. In addition, since the packaging of the packaged article is performed only by one film roll, the height of the packaged article is not restricted as in the case of the conventional two rolls, and the article is loaded into the workstation in a vertically long state. The width of the film to be used is reduced, and the apparatus can be downsized.

[0013]

As is clear from the above description, according to the present invention, by supplying a plastic film for wrapping a product by one film roll, the mounting work of the film roll can be performed in a safe place. It can be performed at once and can exhibit excellent workability, and can carry in the packaged product in a vertically long state.The film roll used is small in width, inexpensive, and excellent in handling. In addition, the size of the apparatus can be significantly reduced. Accordingly, the present invention is an automatic packaging EARLY <br/> the packaged article according wiped out conventional problems films, where to contribute to the development of the industry is extremely large.

[Brief description of the drawings]

FIG. 1 is an overall perspective view showing an embodiment of an automatic packaging machine according to the present invention.

FIG. 2 is a schematic view showing an operation process of a main part of the embodiment.

FIG. 3 is a schematic view showing an operation process of a main part of the embodiment.

FIG. 4 is a schematic view showing an operation process of a main part of the embodiment.

FIG. 5 is a schematic view showing an operation process of a main part of the embodiment.

FIG. 6 is a schematic view showing an operation process of a main part of the embodiment.

FIG. 7 is a schematic view showing an operation process of a main part of the embodiment.

FIG. 8 is a schematic view showing an operation process of a main part of the embodiment.

[Explanation of symbols]

 3 Workstation 4a Film roll 8 Tension cylinder 9 Film gripping member 10 Seal bar 11 Clamper 16 Side seal mechanism

Claims (2)

(57) [Claims] 1. A film roll (4a) for supplying a film to a rectangular package to be carried into a work station (3), and a film roll supplied from an upper portion of an entrance of the work station (3). A film gripping member (9) for chucking the edge below the entrance, and a packaged product is pushed into the workstation (3) together with the film whose edge is chucked by the film gripping member (9). A pushing cylinder (12) for attaching the film to the front and upper and lower surfaces of the package, and a film to the film gripping member (9) from above the rear surface of the packaged product pushed into the work station (3). A vertically movable seal bar (10) that pushes down the extension part to attach the film also to the back surface of the packaged article having the film attached to three sides, a lowered seal bar (10), and the film gripping member (9). ) A movable clamper (11) for temporarily clamping the film edge by pressing the portion slightly above the cut portion toward the seal bar (10) when cutting the film sealed between the A packaged product made of a film, comprising: a side sealing mechanism (16) for sealing a free end protruding from both sides of a film attached to four sides along both sides of the packaged product. Automatic packaging machine. 2. A tension cylinder for applying a tensile force to a film supplied from a film roll (4a) to a work station (3) at a position preceding the work station (3).
The automatic packaging machine for packaging articles with a film according to claim 1, wherein (8) is provided.