CA1048919A - Apparatus for wrapping goods shaped like rectangular prism - Google Patents
Apparatus for wrapping goods shaped like rectangular prismInfo
- Publication number
- CA1048919A CA1048919A CA76253951A CA253951A CA1048919A CA 1048919 A CA1048919 A CA 1048919A CA 76253951 A CA76253951 A CA 76253951A CA 253951 A CA253951 A CA 253951A CA 1048919 A CA1048919 A CA 1048919A
- Authority
- CA
- Canada
- Prior art keywords
- article
- folding
- web
- wrapping
- plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000000463 material Substances 0.000 claims abstract description 20
- 230000033001 locomotion Effects 0.000 description 7
- 238000010276 construction Methods 0.000 description 3
- 108010078791 Carrier Proteins Proteins 0.000 description 2
- 230000032258 transport Effects 0.000 description 2
- 241000899771 Arenga undulatifolia Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B11/00—Wrapping, e.g. partially or wholly enclosing, articles or quantities of material, in strips, sheets or blanks, of flexible material
- B65B11/06—Wrapping articles, or quantities of material, by conveying wrapper and contents in common defined paths
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Basic Packing Technique (AREA)
- Packaging Of Special Articles (AREA)
- Auxiliary Devices For And Details Of Packaging Control (AREA)
- Container Filling Or Packaging Operations (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE:
Goods in the shape of rectangular prisms or boxes, such as sawgoods, lumber piles, plate stacks and the like, are wrapped with paper or other suitable wrapping material as they move along a transporting conveyor. The wrapping material is stored on a roll and an end of the roll is brought into contact with the goods to be wrapped. The goods then move along the conveyor, drawing wrapping material from the storage roll along the length of the goods. The wrapping material is then attached to the goods.
Goods in the shape of rectangular prisms or boxes, such as sawgoods, lumber piles, plate stacks and the like, are wrapped with paper or other suitable wrapping material as they move along a transporting conveyor. The wrapping material is stored on a roll and an end of the roll is brought into contact with the goods to be wrapped. The goods then move along the conveyor, drawing wrapping material from the storage roll along the length of the goods. The wrapping material is then attached to the goods.
Description
~048919 The present invention relates to the wrapping of parts and goods that are shaped like rectangular prisms or boxes.
Until now, so far as is known, lumber or mill products, such as saw goods, piles and plate stacks have been wrapped by hand because no satisfactory operating wrapping machines have been available.
This invention relates to an apparatus for wrapping of pieces and goods substantially shaped like a rectangular prism, particularly saw goods, piles or plate stacks as they are moved along a transporter, such as a roller conveyor or a belt trans-porter, so that one end of a web of wrapping material, such as paper web which is wider than the part or pile to be wrapped, is brought down from a roll towards the surface of the transporting line, the roll being arranged in the frame of~the wrapping appa-ratus, transversely above the transporting line.
An object of this invention is to eliminate the requirement of hand wrapping of such products.
A considerable improvement is obtained by means of the apparatus of this invention in wrapping of goods, for instance, so that the wrapping remains undamaged during transport and gives the desired protection for the material to be protected.
In the wrapping apparatus of the invention, it is possible to use webs of wrapping material of different widths and also webs made of different materials according to the quality and protection requirements in question.
Accordingly, the invention more specifically provides an apparatus for wrapping articles in the general form of a rectangular prism, having top, side, front and rear walls, as the articles move along a conveyor, this apparatus comprising: means for storing a roll of wrapping material to wrap the article with a web of material leading therefrom; plate means for applying a front end of the web against the front wall of the article to be ,A - 1 - ~
- 104891~
wrapped; first wrapping carriage means for moving the plate means in the same direction as the article as the latter moves along the conveyor to pull a length of web from the roll, and folding means mounted on this carriage means for fo]ding portions of the web, extending past the top wall of the article, against the side walls of the article.
In a preferred embodiment of the invention, the apparatus further includes second wrapping carriage means which comprises: plate means for applying a rear end of the web against the rear wall of the article, and folding means mounted on this second carriage means for folding portions of the web, extending past the top wall of the article, against side walls of the article.
Further details of the invention and a better understanding thereof will be had from the following description of a preferred embodiment, which description refers to the appended drawings wherein:
Figure 1 shows a side view of a wrapping machine according to the invention, partially in section;
Figure 2 shows a front view of the wrapping machine of Figure l;
Figure 3 shows a rear view of the wrapping machine of Figure l; and Figure 4 shows schematically a side view of various operating stages of the wrapping machine.
~ wrapping machine illustrated in Figs. 1, 2 and 3 includes horizontal guides or rails 6 and 7 which are arranged in frame construction 1 (Fig. 1) and are parallel to each other and to a roller conveyor 2 below the machine. The conveyor 2 transports an article or articles of goods 3 to be wrapped, which may be, for example, lumber, such as sawed wood, piles, cut timber, boards, planks or other mill products having the general shape
Until now, so far as is known, lumber or mill products, such as saw goods, piles and plate stacks have been wrapped by hand because no satisfactory operating wrapping machines have been available.
This invention relates to an apparatus for wrapping of pieces and goods substantially shaped like a rectangular prism, particularly saw goods, piles or plate stacks as they are moved along a transporter, such as a roller conveyor or a belt trans-porter, so that one end of a web of wrapping material, such as paper web which is wider than the part or pile to be wrapped, is brought down from a roll towards the surface of the transporting line, the roll being arranged in the frame of~the wrapping appa-ratus, transversely above the transporting line.
An object of this invention is to eliminate the requirement of hand wrapping of such products.
A considerable improvement is obtained by means of the apparatus of this invention in wrapping of goods, for instance, so that the wrapping remains undamaged during transport and gives the desired protection for the material to be protected.
In the wrapping apparatus of the invention, it is possible to use webs of wrapping material of different widths and also webs made of different materials according to the quality and protection requirements in question.
Accordingly, the invention more specifically provides an apparatus for wrapping articles in the general form of a rectangular prism, having top, side, front and rear walls, as the articles move along a conveyor, this apparatus comprising: means for storing a roll of wrapping material to wrap the article with a web of material leading therefrom; plate means for applying a front end of the web against the front wall of the article to be ,A - 1 - ~
- 104891~
wrapped; first wrapping carriage means for moving the plate means in the same direction as the article as the latter moves along the conveyor to pull a length of web from the roll, and folding means mounted on this carriage means for fo]ding portions of the web, extending past the top wall of the article, against the side walls of the article.
In a preferred embodiment of the invention, the apparatus further includes second wrapping carriage means which comprises: plate means for applying a rear end of the web against the rear wall of the article, and folding means mounted on this second carriage means for folding portions of the web, extending past the top wall of the article, against side walls of the article.
Further details of the invention and a better understanding thereof will be had from the following description of a preferred embodiment, which description refers to the appended drawings wherein:
Figure 1 shows a side view of a wrapping machine according to the invention, partially in section;
Figure 2 shows a front view of the wrapping machine of Figure l;
Figure 3 shows a rear view of the wrapping machine of Figure l; and Figure 4 shows schematically a side view of various operating stages of the wrapping machine.
~ wrapping machine illustrated in Figs. 1, 2 and 3 includes horizontal guides or rails 6 and 7 which are arranged in frame construction 1 (Fig. 1) and are parallel to each other and to a roller conveyor 2 below the machine. The conveyor 2 transports an article or articles of goods 3 to be wrapped, which may be, for example, lumber, such as sawed wood, piles, cut timber, boards, planks or other mill products having the general shape
- 2 -1~4~919 of a rectallgular prism when stacked. The goods to be wrapped move past the machine on the conveyor 2 from left to right as viewed in Fig. 1. The conveyor 2 is controlled to program movement of the article 3 in the conventional manner, as will be set forth.
A roll 4 of paper or other suitable wrapping material is mounted in transverse position to transporting line 2 above guides 6 and 7. A control device 25 of the known or conventional kind for feeding and stopping and otherwise controlling movement of a paper web or end strip 5 from the roll 4 in desired cycles, for instance according to a predetermined wrapping program, and for cutting paper web 5 after a desired web length 5 has been removed from the roll 4, is also supported above guides 6 and 7.
As is customary with such control devices, suitable sensors, such as photoelectric cells or the like are provided to sense the relative position of the web 5 with respect to the article 3.
A first folding carriage 8 (Fig. 1) for the wrapping of the first or front end of the article is supported by rolls or wheels 29 (Fig. 3) between guides 6 and 7 of machine frame 1.
The rolls 29 permit the folding carriage 8 to be moved rearwardly and forwardly (Fig. 4) along guides 6 and 7 in the direction of . --conveyor line 2. Carri~ge 8 iQ preferably moved by a suitable motor or drive means 40 which i~ connected to the carriage 8 by means of a transmission belt provided by endless steel cables or chains 30 (:Fig. 1) running in guide3 6 and 7. A front plate 9, mounted transversely to the direction of movement of the goods to be wrapped along the roll conveyor 2 is formed from two side-wardly movable plate sections 14 and 15 (.~ig. 2) and pivotally mounted on folding carriage 8 so that it turns around a horizontal pivot 31, The movable plate se¢tions 14 and 15 of plate 9 are normally in contact a~ shown (.Fig. 2) due to the force e:certed on them by ~prings 27. Plate sections 14 a~d 15 are also able to move towards the sides of the article 3 guided by guides arranged between them, against the spring force of the ~prings 27, for reasons to be set forth.
Plate 9 of folding carriage 8 in Fig. 4 is movable around pivot 31 between a vertical position (~?ig. 1) and a horizontal position (~shown in phantom in Fig. 4) by means of cylinder and piston schematically indicated at 32. ~he folding 20 carriage 8 is al~o adapted to be lowered and lifted upwardly and downwardly in a vertical direction in relation to a supporting frame 34 of the folding carriage 8 by means of cylinder and piston sets schematically indicated at 33 (.~ig. 2).
Folder plates or folders 10 and 11 are pivotally arranged about a ~ertical axis on both sides of front plate 9 of folding carriage 8, as shown in Figs. 1 and 2. The folders 10 and 11 are pivoted by mea;ns of cylinders and pistons schematically shown at 35 from a position substantially defined b~ the pla~e of plate 9 to a position in which they form 30 substantially right angles with plate 9 and are aligned with the side surfaces of the article 3 in the direction of move-ment along conveyor 2. ~he folders 10 and 11 fold the wrapping 16)48919 material against the side surfaces of the article to be wrapped.
Folding carriage 8 also includes folding rollers 12 and 13 (Figs. 1 and 2) arranged on both sides of the carriage.
~hese rollers 12 and 13 can be turned around pivots 37 from a horizontal position (~ig. 1) downwards to a vertical po~ition where the wrapping material at a po~ition forward of the folders 10 and 11 i9 urged into contact with the article 3 to form a proper fold in the web 5 along the interseetion of the front and side surfaces of such article. ~olding carriage 8 is also provided with pressing rollers 16 mounted to arms 39 in a horizontal position, transversely to conve~or line 2 to urge the wrapping material 5 against the upper surface of the article
A roll 4 of paper or other suitable wrapping material is mounted in transverse position to transporting line 2 above guides 6 and 7. A control device 25 of the known or conventional kind for feeding and stopping and otherwise controlling movement of a paper web or end strip 5 from the roll 4 in desired cycles, for instance according to a predetermined wrapping program, and for cutting paper web 5 after a desired web length 5 has been removed from the roll 4, is also supported above guides 6 and 7.
As is customary with such control devices, suitable sensors, such as photoelectric cells or the like are provided to sense the relative position of the web 5 with respect to the article 3.
A first folding carriage 8 (Fig. 1) for the wrapping of the first or front end of the article is supported by rolls or wheels 29 (Fig. 3) between guides 6 and 7 of machine frame 1.
The rolls 29 permit the folding carriage 8 to be moved rearwardly and forwardly (Fig. 4) along guides 6 and 7 in the direction of . --conveyor line 2. Carri~ge 8 iQ preferably moved by a suitable motor or drive means 40 which i~ connected to the carriage 8 by means of a transmission belt provided by endless steel cables or chains 30 (:Fig. 1) running in guide3 6 and 7. A front plate 9, mounted transversely to the direction of movement of the goods to be wrapped along the roll conveyor 2 is formed from two side-wardly movable plate sections 14 and 15 (.~ig. 2) and pivotally mounted on folding carriage 8 so that it turns around a horizontal pivot 31, The movable plate se¢tions 14 and 15 of plate 9 are normally in contact a~ shown (.Fig. 2) due to the force e:certed on them by ~prings 27. Plate sections 14 a~d 15 are also able to move towards the sides of the article 3 guided by guides arranged between them, against the spring force of the ~prings 27, for reasons to be set forth.
Plate 9 of folding carriage 8 in Fig. 4 is movable around pivot 31 between a vertical position (~?ig. 1) and a horizontal position (~shown in phantom in Fig. 4) by means of cylinder and piston schematically indicated at 32. ~he folding 20 carriage 8 is al~o adapted to be lowered and lifted upwardly and downwardly in a vertical direction in relation to a supporting frame 34 of the folding carriage 8 by means of cylinder and piston sets schematically indicated at 33 (.~ig. 2).
Folder plates or folders 10 and 11 are pivotally arranged about a ~ertical axis on both sides of front plate 9 of folding carriage 8, as shown in Figs. 1 and 2. The folders 10 and 11 are pivoted by mea;ns of cylinders and pistons schematically shown at 35 from a position substantially defined b~ the pla~e of plate 9 to a position in which they form 30 substantially right angles with plate 9 and are aligned with the side surfaces of the article 3 in the direction of move-ment along conveyor 2. ~he folders 10 and 11 fold the wrapping 16)48919 material against the side surfaces of the article to be wrapped.
Folding carriage 8 also includes folding rollers 12 and 13 (Figs. 1 and 2) arranged on both sides of the carriage.
~hese rollers 12 and 13 can be turned around pivots 37 from a horizontal position (~ig. 1) downwards to a vertical po~ition where the wrapping material at a po~ition forward of the folders 10 and 11 i9 urged into contact with the article 3 to form a proper fold in the web 5 along the interseetion of the front and side surfaces of such article. ~olding carriage 8 is also provided with pressing rollers 16 mounted to arms 39 in a horizontal position, transversely to conve~or line 2 to urge the wrapping material 5 against the upper surface of the article
3.
A second folding carriage 17 (Figs 1 and 3) for the wrapping of a second or rear end of the article is also mounted in the guides 6 and 7 of frame 1 of the wrapping machine. ~he construction of the rear end folding carriage 17 is generally similar to the first folding carriage 8. lhe carriage 17 includes pressing rollers 26, mounted to arm~ 41 in a horizontal position transversely to conveyor line 2, similar in function to the rollers 16. ~olding carriages 8 and 17 are, however, arranged in guides 6 and 7 so that their pressing rollers 16 and 26 are ~acing towards each other (Fig. 1) In a corre~ponding way to ~tructure of the front end folding carriage 8, rear end folding carriage 17 includes a transverse plate 18 formed by two sidewardly mo~able plate section~ 23 and 24, normally held together by spring 28, as shown in Figure 3, folder plates or folder~ 19 and 20 pi~otally arranged on both sides of plate 18, and folding rollers 21 and 22 arranged on both sides of carriage 17.
In the operation of the present invention, the article 3 to be wrapped, such as a stack of lumber or cut timber supported 1~48919 by and mo~ed along roll conveyor 2, i~ brought to an initial or starting point shown in Figure 4. Front end folding carriage 8 and rear end folding carriage 17 are at such time in the positions shown by full line~ in ~igure 4.
Paper web 5 i8 fed in response to control device 25 from paper roll 4 down between the article 3 and transverse plate 9 of folding carriage 8, until a desired position of the end of paper web 5 i8 indicated, for in~tance by a photocell device arranged in the roll conveyor 2, or other structure of the control device 25. Control device 25 stop~ feeding of the paper from roll 4 at this time. Conveyor 2 then moves the article 3 against plate 9, trapping the leading portion of the web 5 again~t the front portion of the article 3. Folding carriage 8 is lowered by means of cylinder and pistons 33 80 that rollers 16 engage and contact portion~ of the web 5 against the upper surface of the article 3, At the same time, the brake of paper roll 4 is released by control device 25. ~he article 3 i8 then moved forward on roll con~eyor 2 and pushes folding carriage 8 and its front plate 9 along the guides 6 and 7. The leading or front end of paper web 5, being confined between the front end of article 3 and plate 9, cause~ further portions of the paper 5 to be pulled from roll 4 in response to movement of the article 3 along the con~eyor 2. When the rear end of article 3 has passed a specified limit position or point, the cutting mechanism of device 25 cuts paper web 5 and the web 5 i8 placed down on article 3.
When the article 3 has moved forward a certain distance, for instance 3 meters, folders 10 and 11 are turned by cylinder-piston device 35 from the plane substantially defined by plate 9 to a position in contact against the sides of article 3, pre~sing or folding those side parts of web 5 which extend out~ide the width of upper surface of article 3, against the sides of the article 3.
~48919 If the width of article 3 to be wrapped i8 greater than the width of front plate 9, folders 10 and 11 contact the sides of article 3 and force plate sections 14 and 15 of front plate 9 towards the ~ides, overcoming the spring force of spring 27, a~ folder3 10 and 11 turn against the side ~urface~ of such article. ~he width of the front plate 9 i8 in this way auto-matically ~et to correspond to the width of the article 3.
Folding rollers 12 and 13 are ne~t turned by cylinders and pi~tons 26 around pivot 37 from the horizontal position downwards to a vertical position 90 that any parts of the web 5 near the front of the article 3 and at or near the le~el of the upper surface of article 3 and extending wider the width of such article are urged against such sides of the article 3.
Front plate 9 of the front end folding carriage 8, together with folders 10 and 11, are then pi~oted by means of cylinder and pi~ton 32 to a horizontal position ~hown in Fig. 4 (.in which carriage 8 has been shown by phantom broken line~), and folders 10 and 11 are turned up to the level of plate 9.
~ he article 3 ie then moved further forward on the con~eyor line 2, under front end folding carriage 8 90 that pressing rollers 16 thereof press paper web 5 against the upper ~rface of artiole 3. Folding roller~ 12 and 13 are ~till in vertica1 po~ition against the sides of the article 3 and fold the side parts of web 5, e~tending outside the width of ~uch article 3, against the sides thereof. ~he front end folding carriage 8 can at this stage also be moving back along guide~
6 and 7 towards its initial position. However, if a short package is being wrapped, front end folding carriage 8 may remain at the end position of fr~me 1 near the motor 40 (.Fig. 4) until the rear end of the article 3 has passed the feeding line of the paper web at the opposite end ~f the frame 1.
When the rear end of article 3 to be wrapped has passed 16~489~9 a certain limit po~ition or point on conveyor line 2, rear end folding carriage 17 i~ brought against article 3 to be wrapped 90 that transverse plate 18 of folding carriage 17 presses the cut rear end of paper web 5 against the rear end of the article 3. Carriage 17 is then lowered by means of ¢ylinder and piston 43 to a position in which rollers 26 arranged on arms 41 pres~
portions of the web 5 again~t the upper ~urface of article 3.
Rear end folding carriage 17 then folds the rear end of article 3 in a way corresponding to the folding of web 5 performed by carriage 8: folding plates 19 and 20 are turned against the side~ of article 3; at the same tlme plate sections 23 and 24 of plate 18 are moved towards the sides9 if necessary, against the spring force of spring 28 so that the width of plate 18 substantiall~ corresponds to the width of article 3; folding rollers 21 and 22 are turned by cylinders and pi~tons 42 from their horizontal position down to a vertical position 80 that they fold the side parts of paper web 5, extending outside of the width of article 3 at the rear of the upper surface of article 3 against the sides thereof.
~aping of the web 5 at the front end of the wrapped article 3 to securely fasten the applied wrapping by machine or other means can take place simultaneously with folding of web 5 at the rear end. It i9 also possible to combine the taping of the article 3 with the wrapping ~perations 80 that the taping can be carried out in the wrapping machine itself, immediately after the folding.
When the folding of web 5 about the article 3 is completed, taping o~ the rear end is performedJ for instance at a taping machine. ~olding carriages 8 and 17 are then returned to their initial positionsJ shown by full lines in Fig. 4. ~ransverse plate 9 of front end folding carriage 8 is moved to its lower position and transverse plate 18 of rear ~)489~
end folding carriage 17 to its higher po~ition. Both folding carriages 8 and 17 are also elevated to a position 80 that rollers 16 and 26, respectively~, are above the upper surface of the next article to be wrapped, permitting ~uch next article to move beneath the frame 1 on conveyor 2.
When wrapping timber, lt i~ often not necessary to wrap the rear end completely, and the paper web can be cut near the rear end of the timberpile. In this case, the rear end folding carriage 17 is not needed and the one front folding carriage 8 is sufficient.
~ y means of the wrapping machine according to the invention, it is possible to wrap an article or goods in the above described way also in those cases when the side parts of the paper web, extending outside the width of such article, are narrower than the height of side surface of the article. In this case, naturally only the upper part of the article will be wrapped while the lower part remains witho~t protection.
~ he control of wrapping including control device 25 and con~eyor 2 according to the invention can be carried out by means of manual control, mechanical automatic control or minicomputer.
~ he in~ention is not, of course, restricted to the above embodiment, it can vary considerably within the scope of the claims. ~or instance, folding rollers 12, 13, 21, 22 can be pivotally joined at their outer ends 90 that they carry out the folding movement by turning around their other ends.
~ he folding movement direction of said folding rollers 12, 13, 21, 22 can also be defined by guides in whlch ~aid rollers run. In this case, the direction of these guides i8 preferably the same as the direction of the fold obtained by means of the said rollers.
~ he foregoing disclo~ure and description of the present 1~48919 invention is illustrative and explanatory thereof and various changes in the size, shape and materials as well as ln the details of the illustrated construction may be made without departing from the ~pirit of the invention.
A second folding carriage 17 (Figs 1 and 3) for the wrapping of a second or rear end of the article is also mounted in the guides 6 and 7 of frame 1 of the wrapping machine. ~he construction of the rear end folding carriage 17 is generally similar to the first folding carriage 8. lhe carriage 17 includes pressing rollers 26, mounted to arm~ 41 in a horizontal position transversely to conveyor line 2, similar in function to the rollers 16. ~olding carriages 8 and 17 are, however, arranged in guides 6 and 7 so that their pressing rollers 16 and 26 are ~acing towards each other (Fig. 1) In a corre~ponding way to ~tructure of the front end folding carriage 8, rear end folding carriage 17 includes a transverse plate 18 formed by two sidewardly mo~able plate section~ 23 and 24, normally held together by spring 28, as shown in Figure 3, folder plates or folder~ 19 and 20 pi~otally arranged on both sides of plate 18, and folding rollers 21 and 22 arranged on both sides of carriage 17.
In the operation of the present invention, the article 3 to be wrapped, such as a stack of lumber or cut timber supported 1~48919 by and mo~ed along roll conveyor 2, i~ brought to an initial or starting point shown in Figure 4. Front end folding carriage 8 and rear end folding carriage 17 are at such time in the positions shown by full line~ in ~igure 4.
Paper web 5 i8 fed in response to control device 25 from paper roll 4 down between the article 3 and transverse plate 9 of folding carriage 8, until a desired position of the end of paper web 5 i8 indicated, for in~tance by a photocell device arranged in the roll conveyor 2, or other structure of the control device 25. Control device 25 stop~ feeding of the paper from roll 4 at this time. Conveyor 2 then moves the article 3 against plate 9, trapping the leading portion of the web 5 again~t the front portion of the article 3. Folding carriage 8 is lowered by means of cylinder and pistons 33 80 that rollers 16 engage and contact portion~ of the web 5 against the upper surface of the article 3, At the same time, the brake of paper roll 4 is released by control device 25. ~he article 3 i8 then moved forward on roll con~eyor 2 and pushes folding carriage 8 and its front plate 9 along the guides 6 and 7. The leading or front end of paper web 5, being confined between the front end of article 3 and plate 9, cause~ further portions of the paper 5 to be pulled from roll 4 in response to movement of the article 3 along the con~eyor 2. When the rear end of article 3 has passed a specified limit position or point, the cutting mechanism of device 25 cuts paper web 5 and the web 5 i8 placed down on article 3.
When the article 3 has moved forward a certain distance, for instance 3 meters, folders 10 and 11 are turned by cylinder-piston device 35 from the plane substantially defined by plate 9 to a position in contact against the sides of article 3, pre~sing or folding those side parts of web 5 which extend out~ide the width of upper surface of article 3, against the sides of the article 3.
~48919 If the width of article 3 to be wrapped i8 greater than the width of front plate 9, folders 10 and 11 contact the sides of article 3 and force plate sections 14 and 15 of front plate 9 towards the ~ides, overcoming the spring force of spring 27, a~ folder3 10 and 11 turn against the side ~urface~ of such article. ~he width of the front plate 9 i8 in this way auto-matically ~et to correspond to the width of the article 3.
Folding rollers 12 and 13 are ne~t turned by cylinders and pi~tons 26 around pivot 37 from the horizontal position downwards to a vertical position 90 that any parts of the web 5 near the front of the article 3 and at or near the le~el of the upper surface of article 3 and extending wider the width of such article are urged against such sides of the article 3.
Front plate 9 of the front end folding carriage 8, together with folders 10 and 11, are then pi~oted by means of cylinder and pi~ton 32 to a horizontal position ~hown in Fig. 4 (.in which carriage 8 has been shown by phantom broken line~), and folders 10 and 11 are turned up to the level of plate 9.
~ he article 3 ie then moved further forward on the con~eyor line 2, under front end folding carriage 8 90 that pressing rollers 16 thereof press paper web 5 against the upper ~rface of artiole 3. Folding roller~ 12 and 13 are ~till in vertica1 po~ition against the sides of the article 3 and fold the side parts of web 5, e~tending outside the width of ~uch article 3, against the sides thereof. ~he front end folding carriage 8 can at this stage also be moving back along guide~
6 and 7 towards its initial position. However, if a short package is being wrapped, front end folding carriage 8 may remain at the end position of fr~me 1 near the motor 40 (.Fig. 4) until the rear end of the article 3 has passed the feeding line of the paper web at the opposite end ~f the frame 1.
When the rear end of article 3 to be wrapped has passed 16~489~9 a certain limit po~ition or point on conveyor line 2, rear end folding carriage 17 i~ brought against article 3 to be wrapped 90 that transverse plate 18 of folding carriage 17 presses the cut rear end of paper web 5 against the rear end of the article 3. Carriage 17 is then lowered by means of ¢ylinder and piston 43 to a position in which rollers 26 arranged on arms 41 pres~
portions of the web 5 again~t the upper ~urface of article 3.
Rear end folding carriage 17 then folds the rear end of article 3 in a way corresponding to the folding of web 5 performed by carriage 8: folding plates 19 and 20 are turned against the side~ of article 3; at the same tlme plate sections 23 and 24 of plate 18 are moved towards the sides9 if necessary, against the spring force of spring 28 so that the width of plate 18 substantiall~ corresponds to the width of article 3; folding rollers 21 and 22 are turned by cylinders and pi~tons 42 from their horizontal position down to a vertical position 80 that they fold the side parts of paper web 5, extending outside of the width of article 3 at the rear of the upper surface of article 3 against the sides thereof.
~aping of the web 5 at the front end of the wrapped article 3 to securely fasten the applied wrapping by machine or other means can take place simultaneously with folding of web 5 at the rear end. It i9 also possible to combine the taping of the article 3 with the wrapping ~perations 80 that the taping can be carried out in the wrapping machine itself, immediately after the folding.
When the folding of web 5 about the article 3 is completed, taping o~ the rear end is performedJ for instance at a taping machine. ~olding carriages 8 and 17 are then returned to their initial positionsJ shown by full lines in Fig. 4. ~ransverse plate 9 of front end folding carriage 8 is moved to its lower position and transverse plate 18 of rear ~)489~
end folding carriage 17 to its higher po~ition. Both folding carriages 8 and 17 are also elevated to a position 80 that rollers 16 and 26, respectively~, are above the upper surface of the next article to be wrapped, permitting ~uch next article to move beneath the frame 1 on conveyor 2.
When wrapping timber, lt i~ often not necessary to wrap the rear end completely, and the paper web can be cut near the rear end of the timberpile. In this case, the rear end folding carriage 17 is not needed and the one front folding carriage 8 is sufficient.
~ y means of the wrapping machine according to the invention, it is possible to wrap an article or goods in the above described way also in those cases when the side parts of the paper web, extending outside the width of such article, are narrower than the height of side surface of the article. In this case, naturally only the upper part of the article will be wrapped while the lower part remains witho~t protection.
~ he control of wrapping including control device 25 and con~eyor 2 according to the invention can be carried out by means of manual control, mechanical automatic control or minicomputer.
~ he in~ention is not, of course, restricted to the above embodiment, it can vary considerably within the scope of the claims. ~or instance, folding rollers 12, 13, 21, 22 can be pivotally joined at their outer ends 90 that they carry out the folding movement by turning around their other ends.
~ he folding movement direction of said folding rollers 12, 13, 21, 22 can also be defined by guides in whlch ~aid rollers run. In this case, the direction of these guides i8 preferably the same as the direction of the fold obtained by means of the said rollers.
~ he foregoing disclo~ure and description of the present 1~48919 invention is illustrative and explanatory thereof and various changes in the size, shape and materials as well as ln the details of the illustrated construction may be made without departing from the ~pirit of the invention.
Claims (11)
1. An apparatus for wrapping articles in the general form of a rectangular prism, having top, side, front and rear walls, as the articles move along a conveyor, comprising:
(a) means for storing a roll of wrapping material to wrap the article with a web of said material leading therefrom;
(b) plate means for applying a front end of said web of said wrapping material against said front wall of the article to be wrapped;
(c) First wrapping carriage means for moving said plate means in the same direction as the article as said article moves along the conveyor to pull a length of said web of material from said roll; and (d) folding means mounted on said frist wrapping carriage means for folding portions of said web, extending past the top wall of the article, against the side walls of the article.
(a) means for storing a roll of wrapping material to wrap the article with a web of said material leading therefrom;
(b) plate means for applying a front end of said web of said wrapping material against said front wall of the article to be wrapped;
(c) First wrapping carriage means for moving said plate means in the same direction as the article as said article moves along the conveyor to pull a length of said web of material from said roll; and (d) folding means mounted on said frist wrapping carriage means for folding portions of said web, extending past the top wall of the article, against the side walls of the article.
2. The apparatus of claim 1, further including roller means for urging said web against the top wall of the article.
3. The apparatus of claim 1, further including folding rollers for urging the folded portions of said web against the side walls of the article.
4. The apparatus of claim 1, wherein said folding means comprises means for folding portions of said web against the entire side walls of the article to be wrapped.
5. The apparatus of claim 1, wherein said folding means comprises means for folding portions of said web against at least a part of the side walls of the article to be wrapped.
6. The apparatus of claim 1, further including control means for controlling feed of said web from said storing means.
7. The apparatus of claim 1, wherein said plate means comprises:
(a) first and second movable plate sections;
(b) means for resiliently retaining said first and second plate sections in edge abutting contact; and (c) said first and second plate sections being con-nected to said folding means and moving outwardly away from one another in response to contact between said folding means and the side walls of the article to adjust for variations in the width of the article.
(a) first and second movable plate sections;
(b) means for resiliently retaining said first and second plate sections in edge abutting contact; and (c) said first and second plate sections being con-nected to said folding means and moving outwardly away from one another in response to contact between said folding means and the side walls of the article to adjust for variations in the width of the article.
8. The apparatus of claim 1, further including second wrapping carriage means, said second wrapping carriage means comprising:
(a) plate means for applying a rear end of said web of said wrapping material against said rear wall of the article to be wrapped; and (b) folding means mounted on said second wrapping carriage means for folding portions of said web, extending past the top wall of the article, against the side walls of the article.
(a) plate means for applying a rear end of said web of said wrapping material against said rear wall of the article to be wrapped; and (b) folding means mounted on said second wrapping carriage means for folding portions of said web, extending past the top wall of the article, against the side walls of the article.
9. The apparatus of claim 8, wherein said second wrapping carriage means includes:
roller means for urging said web against the top wall of the article.
roller means for urging said web against the top wall of the article.
10. The apparatus of claim 8, wherein said second wrapping carriage means includes:
folding rollers for urging the folded portions of said web against the side walls of the article.
folding rollers for urging the folded portions of said web against the side walls of the article.
11. The apparatus of claim 8, wherein said plate means of said second carriage means comprises:
(a) first and second movable plate sections;
(b) means for resiliently retaining said first and second plate sections in edge abutting contact; and (c) first and second plate sections being connected to said folding means and moving outwardly away from one another in response to contact between said folding means and the side walls of the article to adjust for variations in the width of the article.
(a) first and second movable plate sections;
(b) means for resiliently retaining said first and second plate sections in edge abutting contact; and (c) first and second plate sections being connected to said folding means and moving outwardly away from one another in response to contact between said folding means and the side walls of the article to adjust for variations in the width of the article.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI751823A FI51926C (en) | 1975-06-18 | 1975-06-18 | Method and device for packaging rectangular prismatic pieces and goods. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1048919A true CA1048919A (en) | 1979-02-20 |
Family
ID=8509286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA76253951A Expired CA1048919A (en) | 1975-06-18 | 1976-06-03 | Apparatus for wrapping goods shaped like rectangular prism |
Country Status (5)
| Country | Link |
|---|---|
| CA (1) | CA1048919A (en) |
| FI (1) | FI51926C (en) |
| NO (1) | NO141118C (en) |
| SE (1) | SE410425B (en) |
| SU (1) | SU657738A3 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI20235029A1 (en) * | 2023-01-10 | 2024-07-11 | Orfer Oy | Apparatus for protecting product packages with wrapping material |
-
1975
- 1975-06-18 FI FI751823A patent/FI51926C/en not_active IP Right Cessation
-
1976
- 1976-06-03 CA CA76253951A patent/CA1048919A/en not_active Expired
- 1976-06-15 NO NO762076A patent/NO141118C/en unknown
- 1976-06-17 SU SU762373656A patent/SU657738A3/en active
- 1976-06-17 SE SE7606964A patent/SE410425B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FI51926B (en) | 1977-01-31 |
| NO141118C (en) | 1980-01-16 |
| SE7606964L (en) | 1976-12-19 |
| NO141118B (en) | 1979-10-08 |
| SE410425B (en) | 1979-10-15 |
| FI51926C (en) | 1977-05-10 |
| NO762076L (en) | 1976-12-21 |
| SU657738A3 (en) | 1979-04-15 |
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