JPS596770B2 - Packing tape tensioning device - Google Patents

Description

[Detailed description of the invention] The present invention relates to a packing tape tensioning device.

In particular, the present invention provides a method for compressing a large quantity of paper or fibrous material into a block form in a press and then applying baling tape to the compressed material in the press. It concerns the equipment used. The apparatus of the present invention includes first and second tape supply devices, fixed and movable tape operating tools, releasable tape gripping means supported by either one of the tape operating tools, and at least one of the tape operating tools. It consists of a tape cutting device provided on either one and tape connecting means provided on both of the tape operating tools, and is used to cut the first and second tapes into blocks to be packed, which are formed by compressing a large amount of paper or fibers on a conveyance path. Surrounding the block with tape by partially winding the tape extending between the second tape feeders and then moving the movable tape handler across the transport path to the fixed tape handler, the gripping Between the means and both tape operating tools, the tape is cut between each pair of regions by the cutting device while the tape is gripped at two pairs of regions facing each other and separated in a direction perpendicular to the conveying path. forming a tape surrounding the block, a first tape portion extending from a first tape supply device, and a second tape portion extending from a second tape supply device; A packing tape configured to connect both free ends of the tape surrounding the tape and the free ends of each of the first and second tape portions to each other by the connecting means to form a husband-and-wife joint. The ends of the tape at each of the connections made to the tensioning device and which should face outside the block facing in the opposite direction to the direction of conveyance of the block along the conveyance path;
The connecting means is provided with a means for folding the tape so as to overlap the end of the tape at the connecting portion which is also on the inside, and a means for melting the surface of at least one of the ends of the tape prior to joining. Therefore, each of the connecting portions is formed by overlapping and fusing. A device of the same type as described above for wrapping and packing a single or layered packing object with tape has already been disclosed in Dutch Patent Specification No. 156,357 and Japanese Patent Publication No. 5
No. 3-43875.

In the packing tape tensioning device of the well-known patented invention, the packing tape is attached to the object to be packed (including objects in layers) so that the joint portions of the two tapes are aligned in the transport direction of the object to be packed. They are stretched so as to occupy positions on both the front and rear surfaces, respectively. The above-mentioned well-known packaging tape tensioning device and a press tool for compressing a large amount of paper or fibrous objects such as cloth, straw, hay, tobacco, etc. to be stretched by tape. It is generally difficult to realize a combination with

The object of the present invention is to improve the well-known packaging tape tensioning device and to provide the above-mentioned combination with a very simple and inexpensive device configuration 3. According to the present invention, one tape operating tool is fixedly positioned near the entrance of the press tool and at the edge of the conveyor track, and the other tape operating tool faces the entrance. It is equipped to reciprocate along one surface of the compressed object with a path width that is greater than the width of the object housed in the four presses. In this tape tensioning (winding) device, there is a joint between the ends of the tape tensioned and wound around the object after compression, as well as the end of the supply reel of each tape supply tool. A joint between the ends of each tape piece being connected is formed outside the press tool.

As a result, when the object is in maximum compression, the tape will wrap around the object much more widely. However, objects made of paper or other fibrous materials expand when the pressure applied to them is removed, and the tape itself eventually becomes taut, resulting in the wide winding described above. This is not a disadvantage in the present invention. Furthermore, as a result of forming the above-mentioned joint part at the external position of the compression tool for the object under compression, the expansion of the object wound by the tape causes the two parts formed by the tape to expand. The joint parts come to be located on the same side of the object.

For example, in an apparatus in which the object to be packed after being wrapped with tape is carried out in a direction perpendicular to the entrance plane of the press tool, the tape winding device may remove a portion of the tape after being wound. The tape operation is performed so that each joint portion of the constituent joining tape pieces is reliably positioned on the outer surface of the side of the object that extends in a direction relatively opposite to the direction of conveyance of the object to be conveyed out after winding the tape. A configuration in which the free ends of the tape formed after the gripping and cutting process related to the operating tool are positioned at the upper end of the other, and then connected to each other so as to form a pair in a plane. It is desirable to do so. That is, with the above-mentioned configuration, damage such as the joint becoming loose and falling off during the subsequent conveyance process is prevented, and the free end of the tape at the joint is prevented from getting caught by foreign objects during the conveyance of the object. Objects can be transported smoothly, and the situation where the free end of the tape gets caught on a foreign object and breaks, and the compressed object is scattered, can be reliably prevented. In a preferred embodiment, the press comprises a compression enclosure and a compression ram cooperating with the enclosure, the ram being an object made of a quantity of paper or fibrous material which, after compression, compresses the tape. The object is reciprocated within the conveyor path of the object being wound by the conveyor.

The ram has in its working side at least one groove extending in a plane parallel to the plane of the conveyor track and transversely to the direction of the track. Furthermore, when the ram reaches the end position of its compression stroke,
It is configured to allow a reciprocating tape operating tool to pass therethrough. The object is transported into the enclosed space for compression by a ram, and after compression and tape winding, is transported in the opposite direction from the enclosed space by means such as a second ram. However, in the embodiment according to the present invention, the press tool has a rectangular cross section, and has an enclosed space with open ends at both ends thereof, and an enclosed space at one end in the axial direction. and a ram equipped to move into and out of the enclosed space.

In order to compress a certain amount of an object to be packed, such as a bundle of paper, the ram transfers the object into the enclosed space, and furthermore, the above-mentioned object is wound with tape within the press tool. ,
After being stretched, it is configured to function so as to be discharged outside the enclosed space. In the present invention, the length of the enclosed space is long compared to an object such as a stack of paper wrapped and packed with tape, and has at least two adjacent walls. The adjacent wall portions are configured such that each wall portion moves relative to the other wall portion or in the opposite direction.
That is, in this embodiment, only one ram is required. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of the present invention will be described below based on embodiments and with reference to the attached drawings.

In FIGS. 1 and 2, 1 is a conveyor track.

The opening located above the track 1 shows a feed conduit 2 via which waste paper, which has been bundled beforehand, is placed on the conveyor track. The press ram 4 is arranged to reciprocate within the track 1, and
It forms a part of the press tool provided within the track 1. The press ram also transports a preformed paper stack 3 inwardly into an enclosed space section of rectangular cross section consisting of two open ends forming part of the press tool.
The length of the enclosed space is longer than the packed and compressed paper bundle block stretched with packing tape, and its bottom surface is formed by the conveyor track 1. On the other hand,
The side walls 5 of the enclosed space are arranged to approach and move away from each other, and the upper wall 6 is arranged in such a way that it can move in the direction of the conveyor track and in the opposite direction. During the movement of the paper bundle 3, which is an object to be packed, the paper bundle 3 is wound in a U-shape by a thermoplastic resin tape 7.

The winding tapes 7 are each located on both sides of the conveyor track and are each equipped with a tape supply reel 8, one or more guide rollers 9, and a plurality of tension rollers 10. The tape is supplied from two tape supply devices. The tape that has already been wrapped around the compressed bundle of paper in a U-shape,
A fixed type tape handling tool 11 is positioned along one side of the conveyor track 1 in order to be wound around the entire circumference of the paper bundle, and a tape handling tool 11 is arranged to cooperate with the tape handling tool 11,
A tape handling tool 12 is used which is adapted to move transversely to the conveyor track 1 and in a parallel plane.

Each time the compression stroke of the compression ram 4 is completed, the movable tape operation tool 12 is moved from a position on one side along the conveyor track 1 via a groove 13 formed in the compression surface side of the ram 4. It is configured to advance toward the other side and then retreat (see Fig. 2). A preformed paper bundle 3 is placed on the track 1 via the supply conduit 2, while the side walls 5 and the upper wall 6 forming an enclosed space for compression are placed inside the enclosed space. Immediately after the compression and tape winding operations of the contained paper bundle are completed, the paper bundle is slightly separated from the paper bundle, which means that the paper bundle then undergoes a slight expansion, and as a result, the above-mentioned winding This is because the tape will be stretched.

Thereafter, when the ram 4 is moved in the direction of the compressing enclosed spaces 1, 5, and 6, the uncompressed paper bundle is pushed into the space, and at the same time, the compressed paper bundle stretched with packing tape is A stack of paper is advanced beyond the space or the compressed position. In contrast, each tape supply reel 8
As will be described further below, the tape piece connected to
Before the start of a series of winding cycles involving the tape handling tools 11 and 12, they are interconnected to form a set. After the tape is stretched, when the paper bundle moved as described above reaches the predetermined position, at that moment, the walls 5 and 6 forming the enclosed space for compression are respectively moved inward again. It will be done. As a result of this, the subsequent paper bundle is tightly clamped within the compression space. As the ram moves toward the end of its compression action, the stack of paper pushed into the compression envelope is compressed. Ram 4
After reaching the terminal position, each tape operating tool 12 is moved in the direction of the corresponding tape operating tool 11 via the groove 13 provided in the ram 4, and as a result, each tape operating tool 12 is moved in the direction of the corresponding tape operating tool 11. It is made to work together with the tape operating tool 11 (see FIG. 2). That is, as each tape manipulator 12 swerves to its respective rest position, the tape each extending along one side of the conveyor track
are respectively folded into a loop shape around each operating tool, and then each is folded along the side of the paper bundle 3, which is the object to be packed after compression, facing the entrance direction of the enclosed space for compression. It is moved through each groove 13 in the ram 4. The details of this operation correspond to the state shown in FIG. That is, under this condition, each tape extends from the tape supply reel 8 provided on the left side of the conveyor track 1 (based on the traveling direction of the paper bundle 3) in the order shown below. That is, the tape is supplied to the tape supply reel 8.
It extends along the left side of the paper stack 3 at a certain angle through the tape operating tool 11, passes through the front left end of the paper stack 3, and then extends to the front surface of the paper stack 3 and its front right side. is wound and reaches the guide roller 14 along the right side of the paper bundle 3. The guide roller 14 can be removed from the operating position after the wrapping tape tensioning operation is completed. The tape extending through the guide roller 14 is further wound around the head of the tape operating tool 12 along the rear surface of the paper bundle 3 through the groove 13 of the ram 4, and then further passed through the groove 13 again. This leads to a fixedly positioned guide roller 15. Further, the tape passing through the guide roller 15 reaches the tape supply reel 8 provided on the right side of the conveyor track. After the tape formed by connecting the two tape supply reels 8 is wound around the object to be packed in the above-described manner, the tape is transferred to the tape operating tool 12.
A portion of the tape that wraps around the head portion of the tape and a portion of the tape that extends inside the tape operating tool 11 are respectively cut. Four tape ends are formed as a result of these cuts.
Each of these ends constitutes a piece of tape that completely wraps around the paper bundle 3 as well as a piece of tape connecting between the two tape supply reels 8 and can be wound in a U-shape around the next successive paper bundle. They will be interconnected in pairs at each of the two ends to provide what will form a continuous tape. Tape operating tool 11
Details of the cooperative operations of and 12 will become clearer from the following description based on FIGS. 4 to 14.

FIG. 3 shows a compressed paper stack 3 which has been completely wound in the manner described above and is stretched by a tape consisting of two tape sections 7a and 7b. .

The tape portion 7a is a portion supplied from the supply reel 8 located on the left side of the conveyor track 1, while the tape portion 7b is a portion supplied from the supply reel 8 located on the right side of the conveyor track 1. be. As is clear from FIG. 2, the tape wound around the compressed paper bundle housed in the press tool exhibits a wide winding state in the initial state of winding, but the ram 4 After the pressure load due to the walls 5 and 6 of the compression enclosed space is removed, the tape expands to a sufficient extent to stretch the tape that has been wound and integrated around the paper bundle.

FIG. 3 further shows that a pair of joints formed between the tape portions 7a and 7b are located on the same side of the paper stack 3, and that in both joints forming the pair, which tape It is illustrated that the end portions are also located on the outer surface of the object side portion, which extends in a direction opposite to the conveying direction of the paper bundle 3 after being wound with tape. With the above-described winding and joint formation configurations, the risk of each joint becoming loose and falling off while the paper bundle is being conveyed in the direction indicated by the missing marks in the figure can be reduced to a minimum. The pre-formed paper bundle 3 is pushed into the compressing enclosed space 1, 5, 6 by the ram 4, and as a result, the pushing operation results in a connection between the two supply reels 8. The tape is then bent to form a U-shape around the stack of paper.

Thereafter, the tape portion 7a extending along the left side of the conveyor track at a predetermined angle with that side is inserted into the stationary (fixed) tape handling tool 11 with a tape portion slightly larger than the width of the tape. 7 on the grips and couplings 16, 17 which are adapted to move up and down a distance and to be temporarily held in their lowest position, resulting in the movement shown in FIG. to occupy a position. The above-mentioned gripping and connecting tool 16
, 17 is caused by the disk 1 having an operating groove on its outer periphery.
9 is attached to the rotating shaft 18 and the pivot 20
This is achieved by a lever 21 which is swingable about the center and is provided with a roller that engages with the operating groove (see Figures 5, 6 and 7). At the same time that the paper bundle is pushed into a predetermined position in the enclosed space for compression, the gripping and connecting devices 16, 17 are moved to their highest position, in which the action of the gripping and connecting devices is activated. part is located at the same level as the tape. The stationary tape operating tool 11 is equipped with a rotatable shaft 22 equipped with three steering discs each having a peripheral groove and a number of cam discs (see Figures 4, 5, 6 and 7). ). A first grooved disc 23 controls a slide 24 which is flexibly connected by a compression spring 27 to a second slide 25 having a gripping surface 26 (sixth and seventh (see figure). After the state shown in FIG.
The slide 25 has a gripping member 16 that is movable in the vertical direction.
towards the gripping surfaces 28 and fixed gripping member 16', with the result that the tape portion 7a is gripped between the gripping surfaces 26 and 28, respectively, at two spaced locations (see FIG. 8).

Simultaneously with the above-mentioned grasping process, the knife 31 fixed to the arm 30 is swung (fourth, eighth,
After a short period of time (see FIG. 9), the knife 32 with two cutting edges is moved with its right cutting edge along the knife 31. As a result, the tape portion 7a is cut between the positions of the two grips (26, 28) respectively. The knife 32 is connected via a lever 36 to a slide 35 which is adjusted by a steering disc 37 via a support 33 and a rod 34 (see FIGS. 5 and 7).
After cutting the tape section 7a, the slide 24 is moved forward slightly, so that the right free end 7a' of the tape is bent into a right angle by a finger 38 formed on the slide 24, placed on the connecting member 17' (
(See Figure 10). After a certain period of time has elapsed, the movable tape operating tool 12 and the tape portion 7 wound around the operating tool
b penetrates each groove 13 of the compression ram 4 and is moved in the direction of each corresponding tape handling tool 11, and furthermore, the tape handling tool 11 has a tape portion extending on its gripping surface 39 that is mainly a gripping member. 16, 16' are pressed against the respective gripping surfaces 40 (FIGS. 7 and 11). That is, this is because the tape portion is gripped at two separate locations by the pressing operation as described above. After cutting the tape portion 7a, the knife 31 is rotatably retracted, and the slide 35 with the knife 32 moves between the knife 42 provided in the head 41 of the tape operating tool 12 and the left side thereof. Advance until the cutting edge engages. As a result, the tape portion 7b is cut while being placed between the grip portions 39 and 40 (FIG. 12), in the same way as the cutting process of the tape portion 7a described above. After cutting the tape portion 7b, the slide 35 with the knife 32 is retracted and the head 41 of the tape handling tool 12 is further advanced and guided into the space existing between the two connecting members 17 and 17'. Ru.

As a result, the two tape ends 7b'' and 7b'' are bent, the free end 7b'' is positioned so as to abut the connecting member 17, and the free end 7b'' is bent over the tape end 7a'.
They extend parallel to each other with a slight distance from each other (see FIG. 13). After this step, the tape recessed end 7a
The tape end 7b'' is slightly spaced apart by an axially movable finger 43 provided in the tape operating tool 11.
so that it extends parallel to the Said finger 43 is adjusted by a third grooved disc 45 via a lever 44 (see FIGS. 5, 7 and 14). After achieving the state shown in FIG. 14 and also predicted from FIG.
mutually opposing tape free ends 7a', 7, respectively;
The heating fingers 46 for melting the surfaces 7a'', 7b'' and 7b are respectively inserted into the spaces between the paired tape ends.

The respective fingers 46, which hold the heating element towards each end, are mounted on a parallelogram-shaped rod system such that each finger is movable vertically parallel to each other. Movement of the rod system is derived from the cam disk 51 via the rod 49 and lever 50. As soon as the heating finger 46 leaves the space formed between each tape free end 7a', Rb drawer 7a7, 7b2, each connecting member 17, 17' fixed to a locking lever 52 operates the tape. Ingredients 12
is moved in the direction of the head 41. As a result, the tape end 7
a', 7b' and tape ends 7a, 7b are pressed and abutted by their respective welded surfaces.
Lever 52 is controlled by a cam disc 53 (see FIG. 4). The tape 5 winding the compressed paper bundle contained within the compression envelope is eventually tensioned and free of each of the tape strips still connected to the tape supply reel 8. The ends will be interconnected again. After the above-described winding cycle is completed, the movable tape operating tool 12 returns to its initial operating position and is in the state of the initial 10th period, but upon returning, the compression ram (press ram) 4 The stationary tape operating tool 11 returns to its initial position and also returns to its initial operating state. In the above explanation,
Although the apparatus of the present invention has been described only with regard to packing bundles of paper, it is also possible to wrap and stretch fibrous objects such as compressed pieces of cloth, straw, hay, tobacco, etc. with tape to form each block body. Naturally, the device of the present invention can be used.

The device described above is useful only for wrapping thermoplastic tapes around packing objects.

If the material used to wrap the cargo or package is a non-thermoplastic material, such as natural fiber tape or metal tape, the tape ripping end may be used instead of the heating device described above. 25. Tools for gluing, welding, twisting, nailing, creasing or other connecting devices must be used. The interconnection of the tape free ends takes place in a stationary tape handling tool located outside the press tool, resulting in a complex linking tool 30.
can be easily used. Paper in the above description generally means waste paper or used paper.

Although the present invention can achieve the intended purpose by having the configuration as described in detail in the above embodiments, it is of course possible to make various changes within the scope of the 35 principles.

Various embodiments of the present invention are listed below. 1. An apparatus for compressing a large amount of paper or fibrous material into a block form using a press tool, and then applying baling tape to the compressed object in the press tool 40. a conveying path for the large amount of paper, etc., which extends inside or through the press tool, and each of which is provided with an individual tape supply reel, and which extends in front of the enclosed space for compression. At least two tape supply devices are provided along each side of the conveying path section, and various mechanical elements are provided for the conveying path section so as to cooperatively participate in or disengage from the tensioning operation. at least two tape handling tools configured to move in the transverse direction and in parallel planes; In order to ensure that the tape is wound and stretched around the object, the tape parts that remain connected to each of the above-mentioned tape supply tools after the winding operation are connected to each other, and the joint surfaces after the mutual connection are is a part of a single packing tape, so that it extends as a flat part of a single packing tape,
After being supplied from each of the above-mentioned tape supply tools, the ends of the tapes have already been joined to each other as described above, the tapes are wound around the object in a U-shape, and the object is under compression in the press tool. The above-mentioned one tape portion extending between the respective tape supply tools is moved between adjacent corresponding positions, each portion of the tape portion is gripped at two places, and each portion is held at the gripping portions of the two places. The tape is cut at one point in between, and the free ends of the tape formed after the cutting are overlapped and integrated, and one of the tape operating tools is placed near the entrance of the press tool and along the conveying path. The compression device is fixedly provided, and the other table operation tool faces the entrance of the conveyance path with a path length longer than the width of the object to be compressed housed in the press tool. A packing tape tensioning device, each characterized in that it is equipped to reciprocate along the side of the object underneath.

). In the apparatus in which, after winding and tensioning of the packing tape, the object under compression is carried out in a direction perpendicular to the inlet plane of the press tool, a joint forming a part of the tape after tensioning; The tape handling tool is arranged so that each joint of the tape piece is reliably positioned on the outer surface of the side of the object that extends in a direction opposite to the direction of conveyance of the object to be conveyed out after the tape has been stretched. Item 1, characterized in that one end of the tape formed after the gripping and cutting process of the operating tool is positioned at the upper end of the other, and then they are integrally connected to each other. The packing tape tensioning device described in .

3. The press tool consists of an enclosed space for compression and a compression ram that cooperates with the space, and the ram is used to convey a bundle of paper or an object made of fibrous material to be wrapped with tape after compression. It reciprocates within the orbit, and
the ram has in its working side at least one integral groove configured to extend in a plane parallel to the plane of the conveying track and transversely to the direction of the conveying track; When the ram reaches the end of its compression stroke,
3. The packing tape tensioning device according to claim 1, wherein the tape operating tool, which is capable of reciprocating motion, can be moved through the groove.

4. The press tool has a rectangular cross section, and is provided with an enclosed space having open ends at both ends thereof, and one end in the axial direction that moves in and out of the enclosed space. The ram moves a certain amount of the object to be packed, such as a bundle of paper, into the enclosed space, compresses it, and transports the object after the packing tape has been applied from the enclosed space to the outside. The enclosed space is longer than the length of the object wrapped and stretched with the tape, and the enclosed spaces are in contact with each other. and at least two adjacent wall portions configured to move relative to each other so as to be separated from each other. .

[Brief explanation of the drawing]

FIG. 1 is a partially sectional perspective view of the device of the present invention, FIG. 2 is a plan view schematically showing a portion of the device of the present invention, and FIG. FIG. 4 is a partial perspective view of a block of paper or other fibrous material wrapped and stretched with baling tape; FIG. 5 is a plan view and a partial cross-sectional view of a tape operating tool used for winding, FIG. 5 is a partial cross-sectional view taken along one side of the tape operating tool, and FIG. FIG. 14 is a partial cross-sectional view taken along the other side of the illustrated tape handling device, and FIGS. 7 to 14 are partial plan views of the tape handling device under different cooperative operating conditions. 1... Conveyor orbit, 2. ．． ．．・・・． supply conduit, 3. ．． ．． ... Sheaf of paper, 4 ... Press ram, 5, 6 ... Wall of enclosed space, 7 ...
Tape, 7a', 7b', 7a'', 7b''...
Tape free end, 8... Tape supply reel, 1
1, 12... Tape operation tool, 13...
Groove in ram 4, 16...Gripper, 17, 17
'...Connector, 26, 28, 40...
Gripping surface of tape operating tool 11, 31, 32... Knife, 39... Gripping surface of tape operating tool 12, 4
6... Heating finger, 49... Rod, 51, 53... Cam disk.

Claims (1)

[Claims] 1 First and second tape supply devices, fixed and movable tape operating tools, a releasable tape gripping means supported by one of the tape operating tools, and a tape provided on at least one of the tape operating tools. It consists of a cutting device and a tape connecting means provided on both tape operating tools, and is used to connect a block to be packaged formed by compressing a large amount of paper or fibers on a conveyance path between the first and second tape supply devices. The block is surrounded with tape by partially winding the tape extending from the tape and then moving the movable tape handler across the conveyance path to the fixed tape handler, the gripping means and both tape handlers being the block by cutting the tape between each pair of areas with the cutting device while gripping the tape at two pairs of opposing areas separated in a direction perpendicular to the conveying path. forming a tape surrounding the block, a first tape portion extending from a first tape supply device, and a second tape portion extending from a second tape supply device; In the packing tape tensioning device configured to connect both free ends and the respective free ends of the first and second tape portions to each other by the connecting means to form respective connecting portions, a conveying path is provided. Fold an end of the tape at each of the connecting portions that should be on the outside of the block facing in a direction opposite to the conveying direction of the block along with the end of the tape at the connecting portion that should also be on the inside. The connecting means is provided with means for bending and means for melting the surfaces of at least one of the ends of the tape prior to joining, so that each of the joints is formed by overlapping and fusing. Packing tape tensioning device.