JP4196192B2 - Stacker bundler and control method thereof - Google Patents

Description

  The present invention relates to a stacker bundler for bundling a signature discharged from a printing press such as an offset rotary press and bundling it, and a control method therefor.

  Conventionally, this type of stacker bundler generally includes a conveyer that conveys signatures in a stacked state, a small bundle accumulating device that accumulates signatures that are freely dropped from the end of the conveyer to form a small bundle, and the conveyor A settling device for temporarily blocking the flow of the upper signature, a pusher for pushing the small bundle downstream while blocking the flow of the signature by the settling device, and further stacking the small bundle to form a large bundle And a bundling unit for bundling the large bunch. For example, signatures are continuously flowed at a speed of 20 m / min or more, accumulated to form a bundle, and banded to bind. To do.

  The settling device includes a pressing type stopper that presses and stops the signature to be conveyed, and a predetermined flow while pressing the flow of the signature toward the upstream side from the signature that is pressed and stopped by the pressing type stopper. A pressing roller that rolls at a speed, and a lifting plate that extends below the pressing stopper and under the track of the pressing roller and lifts the signature on the conveyor from the conveyor, and the pressing stopper and the pressing A device that temporarily stops the flow of signatures by cooperation of a roller and a lifting plate is known (see, for example, Patent Document 1).

  The small bundle stacking apparatus generally includes a guide wall that guides the front, back, left and right of a signature, a lifting platform that receives and stacks a bundle of signatures falling from the conveyor, and the lifting platform that stores a predetermined number of signatures. Before the manufacture of a large bundle in the final form, and a temporary support plate that can be moved forward and backward to temporarily receive the signature falling from the conveyor when it descends. A small bundle is created as a process. It is known that the left and right guide walls have slits into which the temporary support plate can enter and have shutters that can open and close the slits on the outer surfaces of the left and right guide walls (for example, Patent Documents). 2).

The large bundle production unit includes a small bundle lifting table for placing and moving the small bundle up and down, a fence for guiding the front and rear, left and right of the small bundle or the large bundle in which the small bundles are stacked above the small bundle lifting table, and the fence A large bundle holder supported at the bottom of the space surrounded by the large bundle holder so that the small bundle on the small bundle elevating table enters and receives the large bundle holder from the left and right or front and rear directions (for example, patents) Reference 3).
No. 8-5179 JP 2003-63720 A No. 7-18658

  Since the stacker bundler processes the signature at a high speed as described above, the signature tends to be jammed or uneven. However, the stacker bundler is lined with a rotary press etc., and if a problem such as a paper jam occurs in the stacker bundler, the entire line is stopped, so that paper jams and irregularities of signatures should be avoided as much as possible. Has become a traditional issue. Signature jams and irregularities can occur in various components of the stacker bundler.

  In the settling device, in order to temporarily block the flow of signatures, the lifting plate lifts the flow of signatures from the conveyor, and the pressure roller is arranged on the lifting plate over the signatures from the downstream side to the upstream side. Roll and push. The reason that the pressing roller rolls and pushes over the arrangement of signatures is for the purpose of uniformly narrowing the pitches of the overlapping signatures.

  However, in the conventional settling device, the lifting plate lifts the flow of signatures on the lifting plate at a time, so the flow of signatures is blocked by the upstream end of the lifting plate, and the signature is at that position. Would pile up in a dumpling form, so the suspension time of the signature flow by the settling device was limited.

  Further, in the settling device, when the signature is sandwiched between the pressing type stopper and the lifting platform and the flow of the signature is stopped, the folding which is shifted and overlapped immediately downstream of the signature pressed by the pressing type stopper. When the ding receives frictional pressing force from the signature pressed by the pressing type stopper and is sent to the small bundle accumulating device behind the flow of the preceding signature, at that time, the temporary receiving plate is already in the small bundle accumulating device. In some cases, the number of the preceding small bundles is insufficient for the predetermined number of copies due to the entry, and the fork-like temporary receiving plate that has entered the small bundle accumulation device may be skewered.

  Further, in the small bundle stacking device, the left and right guide walls and the temporary support plate are moved by making point contact with the shutter of the left and right guide walls or making line contact in the intersecting direction with the left and right edges of the signature. Because of this structure, the signature sometimes protrudes from the shutter.

  Furthermore, the small bundle of signatures placed on the lifting platform is vented between the signatures by re-raising the lifting plate and pressing it against the back of the temporary backing plate before being sent to the large bundle production unit by the pusher. At that time, one signature at the top of the small bundle sometimes stuck to the back surface of the temporary backing plate. The signature stuck to the temporary backing plate may fall in an irregular direction when the temporary backing plate moves out, or may be pinched between components.

  In the large bundle production section, the small bundle lifting table on which the small bundle is placed is raised, the small bundle is raised into the space surrounded by the fence, and the L-shaped large bundle holder enters the space from the left and right. After supporting the bottom surface of the small bundle from the left and right sides, the small bundle lifting table is lowered. A large bundle is manufactured by repeating this series of operations. However, if the position of the small bundle placed on the small bundle lifting table is shifted, the small bundle lifting table is moved to the small bundle lifting table. The upper edge of a small bundle placed on the fence sometimes hit the fence, preventing normal stacking.

  In order to solve the above-described conventional problems, the stacker bundler according to the present invention includes a conveyor that conveys signatures in a stacked state, and a small bundle that collects signatures that are freely dropped from the end of the conveyor. A stacking device, a settling device that temporarily blocks the flow of signatures on the conveyor, a pusher that pushes the small bundle downstream while blocking the flow of signatures by the settling device, In a stacker bundler having a large bundle production unit that further stacks a bundle to form a large bundle, and a bundling unit that binds the large bundle, the settling device presses and stops the signature to be conveyed, A pressing roller that rolls at a predetermined speed while squeezing the flow of the signature toward the upstream side from the signature that is pressed and restrained by the pressing-type stopper; A lifting plate extending under the track of the conveyor and lifting a signature on the conveyor from the conveyor, the lifting plate being at least an upstream portion and a downstream portion of the lifting plate. Is supported by an at least one pair of lift driving devices that are independently driven so as to be capable of tilting.

  It is preferable that there is a step where the conveying height of the conveyor is lowered at a position immediately downstream of the pressing type stopper.

  Further, in order to solve the above-described conventional problems, the present invention provides a method for controlling the stacker bundler having the above-described configuration, in which the pressing roller is squeezed with the rolling of the pressing roller when the lifting plate is raised. The elevating drive device is controlled to be lifted in order from the downstream side to the upstream side so as to lift the signature at the position.

  When controlling the raising / lowering drive of the raising / lowering driving device, the raising speed of the upstream raising / lowering driving device is proportional to the moving speed of the pressing roller rolling and the raising distance of the upstream raising / lowering driving device, and It is preferable to make it inversely proportional to the moving distance.

  Furthermore, in order to solve the above-described conventional problems, the stacker bundler according to the present invention includes a small bundle raising / lowering table on which the large bundle production unit places a small bundle and moves up and down, and the small bundle above the small bundle raising / lowering table. Alternatively, a fence that guides the front, rear, left and right of a large bundle in which the small bundles are stacked, the bottom of which is swingably supported so as to open in at least one of the front, rear, left and right, and a space surrounded by the fence A large bundle holder supported on the bottom of the small bundle, a detection unit for detecting a positional shift of the small bundle placed on the small bundle lifting table to the front and rear and at least one of the left and right sides, and the detection unit And a drive unit that swings and drives the fence to open to at least one of the front and rear sides and the left and right sides.

  According to the present invention, the elevating drive device that supports the elevating plate is disposed at least on both upstream and downstream sides, and they are driven independently, and the elevating plate is supported so that the elevating plate can be tilted. Since the flow of signatures can be lifted in accordance with the movement of the rollers, the signatures can be prevented from being stacked in the form of dumplings at the upstream end position of the lifting platform, and the pause time of the signatures can be extended. .

  Also, at the position immediately downstream of the pressing mold stopper, by providing a step to reduce the conveying height of the conveyor, the signature that is shifted and overlapped immediately downstream of the signature that the pressing mold stopper is pressing, The frictional pressing force is received from the signature pressed by the pressing type stopper, and the signature is prevented from being sent to the small bundle accumulating device behind the flow of the preceding signature.

  Further, in the small bundle stacking device, the left and right guide wall shutters are supported in a vertically movable manner, and elastically biased so as to close a gap between the left and right guide walls and the temporary support plate, and the temporary support plate enters. By providing the inclined guide surface formed so as to push up the shutter and the flat surface that can come into surface contact with the receiving surface of the temporary receiving plate, it is possible to effectively prevent the signature from protruding from the shutter.

  Also, by forming unevenness to prevent the sticking of the signature on the back of the temporary backing plate, the signature is temporarily received when the elevator is raised and pressed against the back of the temporary backing plate to re-press the small bundle. There is no sticking to the back of the board.

  Further, the large bundle production unit includes a small bundle lifting table for placing and moving the small bundle up and down, and a fence for guiding the small bundle or the large bundle in which the small bundles are stacked above and below the small bundle lifting table. A fence that is swingably supported so that its bottom side opens in at least one of front and rear and left and right directions, a large bundle holder that is supported so as to be able to advance and retreat at a bottom portion of a space surrounded by the fence, and the small bundle A detection unit that detects a positional deviation of at least one of the front and rear and the left and right sides of the small bundle placed on the lifting table, and at least one of the front and rear and the left and right that receives the detection signal from the detection unit And a drive unit that swings and drives to open to the side of the small bundle, thereby detecting the positional deviation of the small bundle placed on the small bundle lifting table and opening the fence , There is no possibility that small bundles hits to the fence.

  BEST MODE FOR CARRYING OUT THE INVENTION The best embodiment of a stacker bundler according to the present invention will be described below with reference to FIGS.

  As shown in FIG. 1, the stacker bundler 1 includes a conveyor 2 that conveys signatures in a stacked state, and a small bundle accumulating device 3 that accumulates signatures that are freely dropped from the end of the conveyor 2 to form a small bundle. A settling device 4 for temporarily blocking the flow of signatures on the conveyor 2, and a pusher 5 for pushing the small bundle downstream or forward while blocking the flow of signatures by the settling device 4; A large bundle production unit 6 that further stacks the small bundles to form a large bundle, and a binding unit 7 that binds the large bundle.

  The conveyor 2 is formed by winding a plurality of endless ropes in parallel around a drive pulley and a driven pulley that are spaced apart from each other. The conveyor 2 conveys the signatures ejected from a rotary press or the like outside the figure in a state of being overlapped and ejects them to the small bundle accumulating device 3.

  As shown well in FIG. 2, the plowing device 4 has a pressing type stopper 10, a pressing roller 11 disposed at an upstream position of the pressing type stopper 10, and below the pressing type stopper 10 and under the path of the pressing roller. An elevating plate 12 is provided extending over the plate. The settling device 4 can be provided with a thin leaf spring-like pressing body 13 that lightly presses the signature parallel body from above when the pressing stopper 10 presses the signature parallel body as needed.

  The elevating plate 12 is disposed in the gap between the parallel intervals along the parallel endless rope constituting the conveyor 2, and is supported on both the upstream and downstream sides by a pair of elevating drive devices 12 a and 12 b and is lower than the conveying surface of the conveyor 2. It can rise from a position to a slightly higher position and vice versa.

  The elevating drive devices 12a and 12b are pneumatic cylinders in the illustrated example, and the tip ends of the piston rods are pivotally attached to the back surface of the elevating plate 12, and each of the pair of elevating drive devices 12a and 12b is driven independently. By doing so, the elevating plate 12 is supported so as to be tiltable.

  The pressing stopper 10 has a pneumatic cylinder 10a fixed to the frame 15, and moves up and down by driving the pneumatic cylinder 10a. On the other hand, the pressing roller 11 includes a linear guide 11a fixed to the frame 15, a slider 11b guided by the linear guide 11a, and a roller body 11c supported by the slider 11b so as to be vertically movable. The linear guide 11a incorporates a pneumatic cylinder and moves the roller body 11c supported by the slider 11b in the front-rear direction between the upstream side and the downstream side. The slider 11b includes a pneumatic cylinder inside and drives the roller body 11c in the vertical direction.

  The press-type stopper 10 cooperates with the lifting plate 12 to press and stop the conveyed signature. Similarly, the pressing roller 11 cooperates with the elevating plate 12 to stop the flow of the signature from the signature, which is pressed and restrained by the pressing-type stopper 10, toward the upstream side.

  The pressing body 13 is supported by the pneumatic cylinders 10 a and 10 b and moves up and down in accordance with the up and down movement of the pressing stopper 10.

  When raising the elevating plate 12, the elevating plate is moved up and down so that the elevating plate gradually rises from the downstream side to the upstream side so that the signature is lifted from the conveyor at the position where the pressing roller 11 pushes along with the rolling of the pressing roller 11. The drive devices 12a and 12b are driven and controlled.

Specifically, the pressing-type stopper 10 is lowered and the downstream raising / lowering drive device 12b is raised, and the signature is clamped by the pressing-type stopper 10 and the downstream side portion of the raising / lowering plate 12 to restrain it (FIG. 2). (B)). Subsequently, the upstream lifting drive device 12a is raised in accordance with the movement of the pressing roller 11 (FIG. 2 (c)). At this time, the rising speed of the upstream lifting drive device 12a is V _up , When the moving speed is V _r , the rising distance of the upstream lifting / lowering drive device 12a is H, and the moving distance of the pressing roller 11 is L, for example, the relationship of V _up = (H / L) V _r The drive can be controlled to have By doing so, the signature is lifted by the elevating plate 12 according to the movement of the pressing roller 11, and the shift overlap pitch of the signature on the elevating plate 12 is uniformly narrowed, and the upstream end position of the elevating plate 12 The signature can be prevented from overlapping on the conveyor 2 in a dumpling form.

  There is a joint between the conveyors 2 and 2 at a position immediately downstream of the pressing-type stopper 10, and a step S (see FIG. 2C) that lowers the conveying height is formed. By forming such a step S, as shown in an enlarged view in FIG. 2 (c), the signature 100b immediately downstream of the signature 100a pressed against the pressing stopper 10 is 10 can flow smoothly downstream without receiving a pressing force from the signature 100a pressed by the platen.

  As shown in FIG. 1, the small bundle accumulating device 3 includes an elevating platform 20 that can receive and accumulate bundles of signatures falling from the conveyor 2, a guide wall 21 that guides the front, rear, left and right of the signatures, A temporary receiving plate 22 that can be moved forward and backward to temporarily receive a signature that drops from the conveyor 2 when the lifting platform 20 in which a number of signatures are stacked is lowered, above the lifting platform 20; Have. Of the guide walls 21 arranged in the front, rear, left, and right, the front (downstream) guide wall is a fork-shaped jogger that aligns the front edge of the falling signature, and the rear guide wall is a pulley belt. The side facing the signature moves downward to assist the stacking of signatures.

  As shown in FIGS. 3A and 3B, the left and right guide walls 21 are part of the gap X between the temporary support plate 22 and the lower ends of the left and right guide walls 21 when the temporary support plate 22 enters. Is provided on the outer surface of the left and right guide walls 21.

  The shutter 23 includes a shaft body 23a slidably fitted in a bearing 25 fixed to the outer surface of the guide plate 21, a plastic shutter body 23b fixed to the lower end of the shaft body 23a, and an outer surface of the shaft body 23. And a coil spring 23c that is fitted and elastically biases the shutter body 23b downward, that is, toward the temporary support plate 22. The shutters 23 are arranged at two places on the front and rear of each guide wall 21. When the temporary receiving plate 22 is retracted, the receiving bar 24 disposed below the shutter 23 and at a position lower than the temporary receiving plate 22 receives the shutter 23. The shutter body 23 b of the shutter 23 includes an inclined guide surface 23 b-1 formed so as to push up the shutter 23 by the entry of the temporary receiving plate 22, and a flat surface 23 b-2 in surface contact with the receiving surface of the temporary receiving plate 22. Have. Since the shutter main body 23 b of the shutter 23 is in surface contact with the temporary receiving plate 22, it is possible to reliably prevent the signature from protruding from the gap between the guide wall 21 and the temporary receiving plate 22.

  The back surface of the temporary receiving plate 22 is formed with fine irregularities (not shown) to prevent the signature from sticking. The unevenness can be formed by, for example, a known unevenness imparting means in addition to being formed by a sand blaster. The shape, size, etc. of the unevenness are not particularly limited as long as it can prevent sticking due to the generation of a vacuum state between the signature and the back surface of the temporary backing plate.

  The large bundle production unit 6 stacks the small bundle or the small bundle above the small bundle raising / lowering table 30 and the small bundle raising / lowering table 30 on which the small bundle 40 is placed and raised as shown in FIG. It has a fence 31 that guides the front, rear, left and right (only left and right are shown in FIG. 4) of the large bundle, and a large bundle holder 32 supported at the bottom of the space surrounded by the fence 31 so as to be able to advance and retreat. In the present embodiment, the left and right fences 31, 31 are in the form of square bars extending up and down.

  The left and right fences 31, 31 are swingably supported so that their bottom sides open in at least one of the front and rear directions and the left and right directions, and are driven to swing by the drive unit 33. The drive unit 33 receives the position shift signal detected by the detection unit (not shown) that detects the position shift of the small bundle placed on the small bundle lifting table to the left and right, and moves the fences 31 and 31 to the left and right. Swing drive to open to the side. A detection unit (not shown) can use a known detection means, for example, a proximity switch, or the time when the small bundle elevating table 30 is lifted to complete the delivery of the small bundle to the large bundle holder 32 is determined in advance. If the operation is not completed within this time, it can be detected that a positional deviation has occurred.

  Thus, when the positional deviation (FIG. 4 (a)) of the small bundle 40 placed on the small bundle lifting / lowering table 30 is detected, the fences 31, 31 are opened as shown in FIG. 4 (b). A small bundle is prevented from hitting the fences 31, 31.

  The large bundle holder 32 has an L-shape and is supported in a swingable manner. The support portion for supporting the large bundle has a fork shape, and a gap between the left and right fences 31 and 31 formed by square bars. The bottom edge of the large bundle can be supported through. When the small bundle lifting table 30 is lifted with the small bundle placed thereon, when the small bundle lifting table 30 approaches the large bundle holder 32, the large bundle holder 32 swings outward to open the small bundle passage (see FIG. 4B). At this time, when the large bundle holder 32 already holds the small bundle, the held small bundle is once released and dropped onto the small bundle placed on the small bundle lifting / lowering table 30. The small bundle lifting table 30 further rises with a plurality of small bundles placed thereon, and when the small bundle lifting table 30 rises to a predetermined height, the large bundle holder 32 swings inward again to support the bottom of the lowermost small bundle. A large bundle is created by repeating this operation.

It is a side view which shows one Embodiment of the stacker bundler which concerns on this invention. It is a side view which expands and shows the cutting device of the stacker bundler of FIG. 1 is an enlarged view of the stacker bundler of the stacker bundler of FIG. 1, FIG. 3 (a) is a side view, and FIG. 3 (b) is a front view. It is a front view which shows the large bundle production part of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Stacker bundler 2 Conveyor 3 Small bundle stacking device 4 Settling device 5 Pusher 6 Large bundle production part 10 Press type stopper 11 Press roller 12 Lifting plate 12a, 12b Lifting drive device 21 Guide wall 20 Lifting stand 22 Temporary receiving plate 23 Shutter 23b- DESCRIPTION OF SYMBOLS 1 Inclination guide surface 23b-2 Flat surface 30 Small bundle raising / lowering table 31 Fence 32 Large bundle holder 33 Drive part S Level | step difference X Clearance

Claims (5)

A conveyor that conveys the signatures in a stacked state, a small bundle accumulating device that collects the signatures freely dropped from the end of the conveyor to form a small bundle, and temporarily dams the flow of signatures on the conveyor A settling device for stopping, a pusher that pushes the small bundle downstream while damming the flow of the signature by the settling device, a large bundle production unit that further stacks the small bundle to form a large bundle, and binding the large bundle In a stacker bundler having a binding part
The settling device includes a pressing type stopper that presses and stops the signature to be conveyed, and a predetermined speed while squeezing the flow of the signature toward the upstream side from the signature that is pressed and stopped by the pressing type stopper. A pressing roller that rolls at the bottom, and a lifting plate that extends below the pressing-type stopper and under the track of the pressing roller and lifts the signature on the conveyor from the conveyor,
The stacker bundler, wherein the lift plate is supported by at least one pair of lift drive devices that independently drive at least an upstream portion and a downstream portion of the lift plate so as to be tiltable. 2. The stacker bundler according to claim 1, wherein the stacker bundler has a step where the conveying height of the conveyor is lowered at a position immediately downstream of the pressing stopper. The stacker bundler control method according to claim 1 or 2, wherein when raising and lowering the elevating plate, the signature is lifted at a position where the pressure roller pushes along with the rolling of the pressure roller. A control method for a stacker bundler, wherein the elevating drive device is driven and controlled so as to rise in order from the downstream side to the upstream side. When raising and lowering the lifting and lowering driving device, the rising speed of the upstream raising and lowering driving device is proportional to the moving speed of the pressing roller and the rising distance of the upstream lifting and lowering driving device and the moving distance of the pressing roller. The method of controlling a stacker bundler according to claim 1, wherein the control method is inversely proportional to. A conveyor that conveys the signatures in a stacked state, a small bundle accumulating device that collects the signatures freely dropped from the end of the conveyor to form a small bundle, and temporarily dams the flow of signatures on the conveyor A settling device for stopping, a pusher that pushes the small bundle downstream while damming the flow of the signature by the settling device, a large bundle production unit that further stacks the small bundle to form a large bundle, and binding the large bundle In a stacker bundler having a binding part
The large bundle production section is a fence that guides the front, rear, left, and right of the small bundle lifting table that places the small bundle and moves up and down, and the small bundle or the large bundle in which the small bundle is stacked above the small bundle lifting table. A fence that is swingably supported so that the bottom side opens in at least one of front and rear and left and right directions, a large bundle holder that is supported so as to be able to advance and retreat at the bottom of the space surrounded by the fence, and the small bundle lifting table A detection unit that detects a positional shift of the small bundle placed on the front and rear and at least one of the left and right sides, and a detection signal from the detection unit to receive the detection signal to the front and rear and at least one of the left and right sides A stacker bundler characterized by having a drive unit that swings and drives to open.

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