JPH0290285A - Auxiliary device for counting carried article in carrier - Google Patents

Abstract

PURPOSE:To prevent the generation of misdetection of a counting sensor by forming a large level difference on the front edge part of a projecting member even when an article to be carried is thin. CONSTITUTION:Under the state that the folded part of a folded document S1 passes over a projected pulley 20, the succeeding folded document advances while gradually riding over the pulley 20. Even when the number of pages of the folded document is small and the S2 is thin, a large step difference is formed on the folded part of the folded document S2, so that a change in the reflected light is increased. Under the tensile force of a drawing of a properly set tension member 21, the projected pulley 20 is automatically set up to a proper projected value corresponding to the number of pages, i.e. weight. Consequently, the counting sensor D can be prevented from generating a misdetection.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to conveyed objects that are conveyed in continuous rows with some overlap, for example, objects that are folded at the folding section of a rotary press and arranged in rows with a constant overlapping pitch. The present invention relates to an auxiliary device for a counting device that counts printed matter conveyed in a conveyance path.

[Conventional technology]

In conventional technology, when counting thick conveyed objects that are partially overlapped and conveyed in a continuous line, for example, they are printed in the printing section of a rotary press, folded in the folding section, and are counted at a constant overlapping pitch. When counting printed signatures such as newspapers that are conveyed in rows on the conveyance path to the stacker, light is projected onto the surface of the moving signature rows, and the reflected light due to the difference in surface height at the folds is counted. The number of signatures, that is, the number of objects to be transported, is counted by detecting the sudden change with a photodetector and counting the detection signals.

[Problem to be solved by the invention]

In the conventional counting means for counting thick conveyed objects that are conveyed in a continuous line partially overlapping each other, when the thickness of the conveyed objects is thick, that is, adjacent conveyed objects If there is a large difference in the height of the light emitting surface at the boundary of The smaller and flatter the difference in height of the light projection surface at the boundary between adjacent conveyed objects is, the smaller the change in reflected light will be, making it difficult to detect the change in reflected light and causing a counting error.

For example, in printing newspapers, the number of pages in a folded book is not necessarily large, but may be small, and in such cases there is a problem in that counting errors occur.

[Means to solve the problem]

The auxiliary device for counting conveyed objects on a conveyance path according to the present invention is: - In a conveyance path that conveys a continuous line of conveyed objects such as a metropolitan tram, a conveyor in a detection area by a counting sensor that detects a step on the edge of the conveyed objects; It includes a protruding member that is supported so as to protrude from the surface with a predetermined spring force and that pushes up the edge of the conveyed object passing therethrough.

[For production]

First, objects to be transported are placed on a conveyor and transported in a row at a constant overlapping pitch.

In a state in which the preceding object to be conveyed has passed over the protruding member, the next object to be conveyed moves forward while gradually riding on the protruding member supported so as to protrude from its leading edge with a predetermined spring force. . Therefore, while a wedge-shaped space is formed between the lower surface of the leading edge of the object to be transported and the upper surface of the preceding transported object, the height between the leading edge of the transported object and the upper surface of the preceding transported object is The difference in height increases according to the weight, that is, the thickness, of the object to be transported.

At this point, the leading edge of the object to be transported is located at the detection position of the counting sensor. Then, the difference in level between the two wave carriers forming the wedge-shaped space is detected by the counting sensor,
The passage of the conveyed object is counted.

The passage of each conveyed object one after another is counted sequentially in the same manner.

Even if the object to be conveyed is thin, the protruding member forms a large step at its front edge, so that no detection error occurs in the counting sensor.

Furthermore, even if the object to be transported is thick, no unnecessary steps are formed, so jamming in the transport path does not occur.

〔Example〕

Embodiments of the invention will be described with reference to the drawings.

FIG. 1 and FIG. 4 show a conveying device for a counting section in which a counting assist device for conveyed objects according to the present invention is installed.

The conveyance device of the counting section continuously conveys the conveyed object, for example, folds of printed matter such as newspapers printed in the printing section of a rotary press and folded in the folding section, in a staggered and overlapping state at a constant pitch, This is a belt conveyor installed in a conveyance path for discharging to a downstream processing section such as a stacker.

The belt conveyor is composed of an upper belt 1-conveyor A and a lower belt conveyor B, which are opposed to each other.

In the upper belt conveyor A, a plurality of endless conveyor belts 4 on the upstream side are wound around three grooved rollers 1° 2.3 arranged in a triangular shape, and a grooved roller 2 is further wound on the downstream side. A plurality of downstream endless conveyor belts 6 are wound around the rollers 5 and the other grooved rollers 5. That is, the grooved roller 2 serves as a relay roller between the upstream conveyor belt 4 and the downstream conveyor belt 6. Note that a tension grooved roller 7 is provided between the grooved rollers 1 and 3.

In the lower belt conveyor B, like the upper belt conveyor A, a plurality of endless conveyor belts 11 are wound around three grooved rollers 8, 9 and 10 arranged in a triangular shape. In contrast to the endless conveyor belt 4 between the grooved roller 2 and the grooved roller 3 in A, the endless conveyor belt 11 forms an angle between the grooved roller 8 and the grooved roller 9 to form a wedge-shaped space 12. The roller 9 and the grooved roller 10 are parallel to each other and form a clamping space 13.

A floodlight C and a counting sensor D are provided in an upper triangular space 14 on the opposite side of the wedge-shaped space 12 across the endless conveyor belt 4.

As shown in FIGS. 1 and 3, an endless conveyor belt 1
1 in the wedge-shaped space 12 and the lower triangular space 15 on the opposite side.
, a pivot shaft 16 is provided adjacent to the grooved roller 8 and parallel to the roller axis, and the grooved roller 9 is rotatably supported on the swinging end of a bell crank 17 that is rotatably attached to the pivot shaft 16. A tensile force is applied to the other end of the bell crank 17 by a tension member 18 (for example, a coil spring, a hydraulic spring, etc.), and the bell crank 17 is always biased clockwise in the drawing. Thereby, the endless conveyor belt 11 is maintained at a predetermined conveyance path and appropriate tension.

Regarding the counting aid device, as shown in FIGS. 1 and 2, another bell crank 19 is rotatably attached to the pivot shaft 16 in the same way as the bell crank 17, and a bell crank 19 is rotatably attached to the pivot shaft 16. are mutually adjacent endless conveyor belts 11.
A protruding pulley 20 (a plurality of pulleys, if necessary) located between the bell cranks 11 and 11 is rotatably supported, and the other end of the bell crank 19 is connected to a tension member 21 (for example, a coil spring , fluid pressure spring, etc.) to apply an appropriate tensile force (see explanation of operation/effect below). That is, the bell crank 19 is always arranged such that the projecting pulley 20 projects somewhat (for example, about 10 mm) from the surface of the conveyor belt 11 in a half-moon shape between the adjacent endless conveyor belts 11.11 toward the wedge-shaped space 12. is biased clockwise in the drawing.

The tension members 18, 21, in particular the tension member 21, are such that the tension force can be adjusted accordingly and, by the associated incorporation of a damper, abnormal vibrations and thus counting errors are prevented.

The protruding pulley 20 is provided such that its protruding position is upstream by an appropriate distance from the projector C and the counting sensor D (see explanation of operation and function below).

The operation and function of the above-mentioned conveyed object counting assist device will be explained.

First, the folds are conveyed in a row at a constant overlapping pitch.
ll S l, S 2. S3... are placed on the conveyor belt 11 and conveyed from the upstream side (right side in Figure 1) to the downstream side.

As shown in FIG. 1, in a state where the fold portion of the fold 11SI has passed over the protruding pulley 20, the primary signature S2 moves forward while gradually riding on the protruding pulley 20 from the fold portion. Therefore, while a wedge-shaped space is formed between the lower surface of the fold of signature S2 and the upper surface of the preceding fold @S1,
The difference in height between the fold of signature S2 and the top surface of preceding signature S1 increases.

At this point, the folded portion of the signature S2 is located at the detection position below the projector C and counting sensor D.

Then, the counting sensor D detects a change in the reflected light from the light projector C due to the difference in level between the double fold books forming a wedge-shaped space, and the passage of the fold book S2 is counted.

The passage of the next signature S3 and each successive signature is sequentially counted in the same manner.

Even if the signature is thin with only a few pages, the protruding pulley 20 allows
Since the step at the fold of the signature is large,
The change in reflected light becomes large, and no detection error occurs in the counting sensor D.

In the case of a large number of pages that are more than enough to form a fold IS (in the case of newspapers of 18 pages or more), unlike the case of a small number of pages, the difference in level at the fold part of the fold is sufficient for detection, so the protruding pulley 20 is used. is not particularly necessary, and if the fold @ S is thick with a large number of pages (for example, in the case of a newspaper fold of 4 o pages or more), the fold @ S is heavy and stiff when passing over the protruding pulley 40. It would be better not to have the protruding pulley 20, since this would cause the sheet to curl upward and cause jamming (paper jam) in the counting section.

Therefore, a signature with a very large number of pages 31. S2. S3... moves the conveyor belt 1 from the upstream side (right side in Figure 4) to the downstream side.
1 and is conveyed, and as shown in FIG.
1 moves forward while gradually riding on the protruding pulley 20 from the folded portion. However, due to the weight of the fold @S1 applied to the protruding pulley 20, the bell crank 19 is rotated counterclockwise in the drawing against the tensile force of the tension member 21,
The protruding pulley 20 retracts from the conveyor belt 11. Therefore, the above-mentioned jamming does not occur.

In short, under the appropriately set tensile force of the tension member 21, the protrusion pulley 20 automatically protrudes to an appropriate amount according to the number of pages of the folded @S, that is, the weight.

〔Effect of the invention〕

The auxiliary device for counting conveyed objects on a conveyance path according to the present invention is: - In a conveyance path such as a metropolitan tram that conveys a continuous line of conveyed objects, when counting is performed using a counting sensor that detects a step on the edge of the conveyed objects, A protruding member that pushes up the edge of the conveyed object passing through is supported so as to protrude with a predetermined spring force from the conveyor surface in the detection area by the counting sensor that detects the level difference on the edge of the conveyed object, and the projecting member pushes up the edge of the conveyed object. In other words, the protrusion amount corresponds to the thickness.

Therefore, depending on the thickness of the transported object, there is a level difference between the leading edge of the transported object that passes over the protruding member and the upper surface of the preceding transported object, which is sufficient for detection. Since they are formed without shortage, detection errors do not occur in the counting sensor, and jamming on the conveyance path can be prevented, so that the number of conveyed objects is accurately counted and conveyed smoothly.
The efficiency of related work increases.

[Brief explanation of drawings]

FIG. 1 shows a conveyed object automatic counting device (
FIG. 2 is a schematic configuration diagram of the case of counting thin conveyed objects. FIG. 2 is a schematic configuration diagram of a protruding pulley device in a counting auxiliary device in an embodiment of the present invention, and FIG. 3 is a schematic diagram of a belt tensioning device in a conveyor device equipped with a counting auxiliary device in an embodiment of this invention. The configuration diagram, FIG. 4, shows an automatic conveyed object counting device (
FIG. 2 is a schematic configuration diagram of the case of counting thick conveyed objects. 1.2, 3, 5: (Upper side) Grooved roller 4.6: (Upper side) Endless conveyor belt 7: Tension grooved roller 8.9.10: (Lower side) Grooved roller 11: (Lower side)
Endless conveyor belt 12: Wedge-shaped space 13: Clamping space
14: Upper triangular space 15: Lower triangular space 16: Axis 17, 19: Bell crank 18
, 21: Tension member 20: Projecting pulley A: Upper belt conveyor B: Lower belt conveyor C: Floodlight

Claims (1)

[Claims] In a conveyance path that conveys a continuous row of partially overlapping conveyed objects, the conveyor is supported so as to protrude with a predetermined spring force from the conveyor surface in the detection area of the counting sensor that detects the level difference at the edge of the conveyed objects, and Counting auxiliary device equipped with a protruding member that pushes up the edge of the transported object