JP5954613B2 - Sack pasting machine - Google Patents

Description

  The present invention belongs to the technical field of a sack pasting machine used in a manufacturing process of a so-called paper container including a paper container for liquid, and more specifically, is used to fold and paste a paperboard blank for assembling a paper container. It relates to a sack pasting machine.

  Conventionally, paper containers made of paperboard have been widely used as containers for selling alcoholic beverages and juices. In this type of paper container, a blank is formed by punching a sheet as an original paper for a paper container into a predetermined shape through a punching machine, and this blank is pasted in a folded state through a sack pasting machine. It is manufactured by raising the folded blank and filling the content liquid while assembling.

  Such a sack pasting machine in which a blank that has been punched is glued in a folded state has, as a basic configuration, a paper feeding unit, a fold folding unit, a heating unit (or glue application unit), a laminating unit, The paper discharge unit is arranged in this order, and in the transport path between the laminating unit and the paper discharge unit, the bonded product is attached to the belt so that the bonded part is crimped and the bonding state is good. A device called a trombone unit is provided which is sandwiched and conveyed.

Japanese Patent Laid-Open No. 62-109635 JP 2004-358811 A

  As described above, in the laminating part of the sack pasting machine, the blank glued in the glue applying part is folded and laminated, and in the trombone part following the laminating part, the blanking part is pressed to the discharge part while pressing. Transport. However, this sack pasting process has a very fast blank transport speed throughout the sack pasting machine in order to increase efficiency, so the end of the blank does not overlap neatly in the pasting part May occur. If such a poorly bonded product flows out, a defective paper container may be manufactured, and a complaint is issued from the customer who delivered the blank.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a sack pasting machine that prevents outflow of defective sack-laminated blanks. It is in.

In order to solve the above-mentioned problems, the sack pasting machine of the present invention is transported to the discharge unit while pressing at least the laminating unit for folding and laminating the blank and the laminating portion of the blank pasted at the laminating unit. Sack pasting machine equipped with a trombone section that transports the trombone section while pressing the blank between the upper frame belt and the lower frame belt. the Rukoto guide rollers disposed between the rollers, to allow space for the inspection trombone portion above the blank being conveyed, for detecting the state of the lamination portion of the blank from above through the space A detection sensor is provided.

The sack pasting machine of the present invention includes at least a laminating unit for folding and laminating a blank, and a trombone unit that conveys to a discharge unit while pressing the blank laminating portion that is pasted at the laminating unit. It is a pasting machine, and the trombone part is designed to convey while pressing the blank between the upper frame belt and the lower frame belt, and a guide roller is arranged between the driving roller and the driven roller of the upper frame belt. by the Rukoto, characterized in that the trombone portion to allow space for inspection over the blank being transported, in which a detection sensor for detecting the state of the lamination portion of the blank from above through the space Because it is possible to detect in the trombone the blank that has been bonded together without the edges overlapping neatly, the detected bonding By automatically discharged outside in front reaching the non-defective sheet discharge portion, it can be prevented from flowing out of the lamination defective.

It is a schematic structure figure showing an example of a sack pasting machine concerning the present invention. It is explanatory drawing which shows the structural example of the detection means provided in the trombone part in the sack pasting machine of FIG. It is explanatory drawing which shows planarly the positional relationship of the blank conveyed on the lower frame belt in a trombone part, and a detection sensor in the state which abbreviate | omitted the upper frame belt. It is explanatory drawing which shows the positional relationship of the blank conveyed on the lower frame belt in a trombone part, and a detection sensor seeing from an exit side in the state which abbreviate | omitted the upper frame belt. It is explanatory drawing which shows the positional relationship of the blank of a bonding defect goods conveyed on the lower frame belt in a trombone part, and a detection sensor seeing from an exit side in the state which abbreviate | omitted the upper frame belt.

  Next, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a schematic configuration diagram of a sack pasting machine according to the present invention, and a blank is sack pasted while being conveyed from the right to the left in the figure.

  The sack pasting machine shown in FIG. 1 includes a paper feeding unit 10 that feeds blanks B one by one, a habit folding unit 20 that folds the supplied blank B, a heating unit 30 that heats the pasting part of the blank B, A laminating unit 40 that folds and bonds the blank B, a trombone unit 50 that conveys the bonded product that is the bonded blank B, and a paper discharge unit 60 that discharges the bonded product are arranged in this order. Blank B is conveyed at 200 to 500 m / min.

  The paper feed unit 10 receives a bundle of blanks B and sequentially feeds them one by one, and feeds the received blanks B in order from the bottom with a claw to feed them one by one to the fold folding unit 20. The crease fold part 20 is for attaching a crease to the blank B in advance in order to facilitate the laminating process in the laminating part 40 and to facilitate opening in the filling process, and the blank B to be conveyed. Is bent along the ruled line of the flow direction and expanded.

  The heating unit 30 includes a burner 31 and heats the bonding portion to bring the resin in the portion into a molten state. In this case, since the blank B for paper containers into which alcoholic beverages and juices are stored, that is, the blank B using a paperboard coated with a resin such as polyethylene on the surface, such a heating unit 30 is installed. In the case of a sack pasting machine intended for general paper containers, a glue application unit is installed.

  The laminating part 40 performs the laminating process by folding the blank B so that the margin part overlaps with the end part, and sandwiching the folded blank B with the upper and lower pressure rollers 41 and transporting it while crimping. The trombone portion 50 following the laminating portion 40 conveys a bonded product that is the bonded blank B, but is transferred by pressing the bonded portion of the blank B with the upper frame belt 51 or the like. Ensure the bonding state of the mating part.

  The paper discharge unit 60 downstream of the trombone unit 50 is a blank that is bonded in a folded state by discharging the bonded products that are sequentially fed from the trombone unit 50 while being sandwiched by the feed belt 61. Let B be a stacked state in a sashimi state.

  FIG. 2 shows the configuration of the detecting means provided in the trombone 50 of the sack pasting machine having the above-described configuration. As shown in the figure, the trombone 50 includes the upper frame belt 51 and the lower frame belt 52. The blank B is conveyed while being pressed.

Among these, the upper frame belt 51 is opposed to the upper surface of the blank B between the rightmost driving roller 51a and the leftmost driven roller 51b, and is folded diagonally right upward from the driven roller 51b and is wound around the movable roller 51c. Are sequentially guided by the three driven rollers 51d, 51e, and 51f, and rotate along a path returning to the drive roller 51a at the right end. Therefore, the tension of the upper frame belt 51 can be adjusted by moving the movable roller 51c. Also, a pressing plate 53 with a plurality of flanged bearings attached thereto is provided between the right end driving roller 51a and the left end driven roller 51b so as to press the upper frame belt 51 from above as shown in the figure. Yes.

  On the other hand, the lower frame belt 52 faces the lower surface of the blank B between the rightmost driving roller 52a and the leftmost driven roller 52b, folds rightward from the driven roller 52b, reaches the driven roller 52c, and is downward from there. It is wound around the movable roller 52d, and is rotated along a path that is sequentially guided by the three driven rollers 52e, 52f, and 52g in the middle and returns to the drive roller 52a at the right end. Therefore, the tension of the lower frame belt 52 can be adjusted by moving the movable roller 52d. Further, as shown in the figure, a pressing plate 54 having a plurality of hooked bearings is provided between the right end driving roller 52a and the left end driven roller 52b so as to press the lower frame belt 52 from below. It is provided in a state facing the pressing plate 53 on the 51 side.

In the trombone section 50, three guide rollers 51g, 51h, 51i are arranged at the downstream side of the pressing plate 53 between the driving roller 51a at the right end and the driven roller 51b at the left end in the arrangement as shown in the figure. Then, by changing so as to bypass the path of the upper frame belt 51, the inspection space A is formed above the blank B being conveyed, as shown in FIGS. The detection sensor S for detecting the state of the bonding part of the blank B from diagonally upward through the space A is provided.

  FIG. 3 shows the positional relationship between the blank B transported on the lower frame belt 52 in the trombone 50 and the detection sensor S. In order to facilitate understanding, the upper frame belt 51 is omitted in plan view. Show. FIG. 4 shows the positional relationship between the blank B conveyed on the lower frame belt 52 in the trombone 50 and the detection sensor S, and the outlet is shown with the upper frame belt 51 omitted for the sake of clarity. The lower frame belt 52 representatively shows only the relationship with the driven roller 52b on the outlet side.

  In FIG. 3, Sa is an imaging area, and detects a bonding portion Ba of the blank B conveyed on the lower frame belt 52. And as shown in FIG. 4, it is preferable to install the detection sensor S in the position where the edge part of the bonding part Ba of the blank B can be seen. As this detection sensor S, any commercially available sensor can be used as long as a predetermined range can be imaged.

  Since the detection sensor S is provided in this way, it is possible to check the quality by imaging the pasted portion Ba of the blank B that is passing through the trombone 50. At this time, since the detection sensor S images the bonding portion Ba of the blank B from obliquely above, the bonding portion Ba can be seen well. In particular, by installing the detection sensor S at a position where the end of the bonding portion Ba of the blank B can be seen, as shown in FIG. 5, when the blank B is not correctly bonded, Since it becomes easy to see the gap formed between the end portions on the overlapping side, and the shadow on the overlapping side formed on the surface on the overlapping side is easy to see, the detection accuracy is improved. And, since the blank B bonded without the end portion being neatly overlapped can be detected by the trombone portion 50, by providing an ejector linked to the detecting means, the detected defective bonding can be obtained. The paper can be automatically discharged out of the apparatus just before reaching the paper discharge unit 60 to prevent its outflow.

  As described above, the mode for carrying out the present invention has been described by way of example. However, the sack pasting machine according to the present invention is not limited to the above-described embodiment, and various types are possible without departing from the spirit of the present invention. Needless to say, it is possible to make changes.

A space B blank Ba bonding part S detection sensor Sa imaging area 10 paper feeding part 20 peculiar folding part 30 heating part 31 burner 40 laminating part 41 pressure roller 50 trombone part 51 upper frame belt 51a driving roller 51b driven roller 51c Movable roller 51d, 51e, 51f Driven roller 51g, 51h, 51i Guide roller 52 Lower frame belt 52a Drive roller 52b, 52c Driven roller 52d Movable roller 52e, 52f, 52g

Claims (1)

A trombone comprising at least a laminating unit for folding and laminating a blank, and a trombone unit for transporting to a discharge unit while pressing the laminating portion of the blank laminated at the laminating unit. parts are adapted to convey while pressing the blank between the upper frame belt and the lower frame belt by Rukoto guide roller disposed between the drive roller and the driven roller of the upper frame belt, trombone section A sack pasting machine characterized in that an inspection space is formed above a blank being conveyed, and a detection sensor is provided for detecting the state of a blank bonding portion from above through the space.

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