JP4058435B2 - Underlay supply device - Google Patents

Description

  This invention is to prevent dirt from adhering to the contact with the conveyor or the like when the flexible body such as a bundle of printing paper is conveyed by a conveyor or the like, or causing the flexible body to be scratched or torn. Furthermore, the present invention relates to an underlay supply device for supplying an underlay to the lower surface of the conveyed flexible body.

  For example, a newspaper printed on a newspaper printing press is made into a newspaper bundle (printed paper bundle) in which a predetermined number of copies are stacked by a counter stacker, and is then carried out of the counter stacker by a conveyor and sent to a shipping process. Such newspaper bundles are prone to problems such as contamination due to contact with the conveyor during transport by the conveyor, and scratches or tears. Therefore, an underlay supply device for supplying an underlay formed of corrugated cardboard, kraft paper, hatron paper or the like is generally provided near the outlet of the counter stacker under the newspaper bundle.

As such an underlay supply device, an underlay that has been cut into a predetermined size in advance is supplied one by one onto a conveyor from an underlay supply unit provided below a conveyor that conveys a newspaper bundle (Patent Document 1). For example, an underlay supply unit provided above the conveyor supplies an underlay cut in advance to a predetermined size one by one (see Patent Document 2).
No. 6-40200 Japanese Patent Publication No. 6-59966

FIG. 7 is a schematic diagram illustrating a configuration of an underlay supply device according to a conventional example of the present invention, which supplies a single sheet-like underlay one by one from a stocker provided below the conveyor.
The underlay supply device 100 is disposed near the outlet of the counter stacker 200 to which the stacked newspaper bundles are sent and below the conveyor 300 that conveys the newspaper bundle S.
The underlay supply device 100 includes a stocker 101 that stores a plurality of underlays D that have been cut into a predetermined size in advance according to the size of the newspaper bundle S, and a bottom portion of the stocker 101. The underlayable table 102 on which the underlay D is placed, the underlay sending unit 110 for sending the underlay D one by one from the stocker 101, and the underlay D sent by the underlay sending unit 110 are received and conveyed to the conveyor 300. And an underlay conveyance unit 120.

The driving means for moving the table 102 up and down includes a pair of timing pulleys 103 and 103 arranged up and down, a timing belt 105 wound around the timing pulleys 103 and 103 and connected to the table 102, and a vertical vertical direction. It comprises a guide 104 for guiding the up and down movement of the table 102 and a servo motor (not shown) that rotates the timing pulleys 103 and 103.
The drive of the servo motor is controlled by the detection result of the level detector 130 that is provided near the periphery of the stocker 101 and detects the level of the uppermost layer of the underlay D stored in the stocker 101. Then, by raising the table 102 stepwise in accordance with the sending of the underlay D, the level of the underlay D positioned at the uppermost layer is kept constant.

Details of the level detection unit 130 are shown in FIGS.
The level detection unit 130 includes an L-shaped arm 131 that is rotatable about a shaft 131a, a blade 132 attached to one end of the arm 131, and a limit switch provided opposite to the other end of the arm 131. 133 and a spring 134 that constantly biases the arm 131 clockwise.
The tip of the blade 132 bites against the underlay D of the uppermost layer by the biasing force of the spring 134. Then, when the top layer underlay D is sent out by driving the underlay sending section 110, the tip of the blade 132 is disengaged from the top layer underlay D as shown in FIG. As it turns, it bites into the underlay D of the next layer.

  When at least one sheet D (usually several to several tens of sheets) is sent out, the other end of the arm 131 pushes the push button 133a of the limit switch 133 as shown in FIG. Or the servo motor for moving the table 102 up and down is driven. When the lower layer underlay D is raised to the uppermost level, the drive of the servo motor is stopped and the state shown in FIG. 8A is entered, and the limit switch 133 is switched to OFF (or ON).

  The level detection unit 130 not only keeps the level of the underlay D located on the uppermost layer constant, but also sends the next layer underlay D following the uppermost underlay D, so-called double sheet feeding. It also has a function to prevent this. That is, when the top layer underlay D is sent out by the underlay sending portion 110, the tip of the blade 132 bites against the underlay D of the next layer, and the underlayer D under the next layer is pressed by the biasing force of the spring 134. The inconvenience that the lower layer underlay D moves following the upper layer underlay D is prevented.

Next, details of the underlay sending unit 110 will be described with reference to FIGS.
The underlay delivery unit 110 includes a delivery roller 111 that contacts the underlay D, a support arm 113 that rotatably supports the delivery roller 111, a shaft 113 a that rotatably supports the support arm 113, and a support arm 113. An air cylinder 115 disposed opposite the other end, a spring 114 that constantly urges the support arm 113 in the clockwise direction, a motor 112 that is attached to the support arm 113 and that rotates the delivery roller 111, and a motor 112 have.

The underlay D is sent out from the stocker 101 when the motor 112 is driven by an underlay preparation command from the counter stacker 200. The underlay D sent out from the stocker 101 is delivered to a pair of conveyors 121 and 122 constituting the underlay transport unit 120.
The stop of driving of the motor 112 is immediately after the time-up of a cylinder drive control timer (not shown) that drives the air cylinder 115. In this cylinder drive control timer, a time required for delivering the underlay D sent from the stocker 101 by the motor 112 to the conveyors 121 and 122 is set in advance.

  Simultaneously with the time-up of the cylinder drive control timer, the air cylinder 115 is driven, the piston rod 115a depresses the other end of the support arm 113 against the urging force of the spring 114, and the delivery roller 111 is lifted from the underlay D. The underlay D is not disturbed by the underlay transport unit 120. Then, immediately after the air cylinder 115 is driven, the driving of the motor 112 is stopped.

A pair of sensors 121a and 122a are provided in the middle of the transport path of the underlay D by the conveyors 121 and 122. When the sensors 121a and 122a detect the underlay D, the first conveyor drive control (not shown) is performed. The timer is switched on and time measurement starts. Then, when the first conveyor drive control timer expires after a preset time has elapsed, the drive of the conveyors 121 and 122 is stopped, and the leading end portion of the underlay D is placed on the upper surface of the conveyor 300 with a predetermined length a. Only protrude.
When the newspaper bundle S carried out from the counter stacker 200 passes above the sensor 305, a switch of a second conveyor drive control timer (not shown) is turned on by a detection signal of the sensor 305.

In the second conveyor drive control timer, a time from when the sensor 305 detects the newspaper bundle S until it comes into contact with the leading end of the underlay D is preset. Then, at the same time as the second conveyor drive control timer expires, the conveyors 121 and 122 are driven, and the underlay D is sent out at a speed synchronized with the conveying speed of the newspaper bundle S by the conveyor 300. D is placed at a predetermined position of D.
Thereafter, based on the underlay preparation command from the counter stacker 200, the motor 112 is driven, and the next underlay D is sent out from the stocker 101.

However, in the conventional underlay supply device 100 described above, since the timing of the underlay D and the newspaper bundle S is taken using a plurality of timers, there is a problem that the mechanism and control for supplying the underlay D are complicated. is there.
Further, when the conveyance speed or conveyance timing of the newspaper bundle S by the conveyor 300 changes or the size of the newspaper bundle S changes, the time settings of the various timers described above must be changed one by one. There is a problem.

  Further, the interval between the newspaper bundle S and the newspaper bundle S changes depending on the size of the newspaper bundle S sent out from the counter stacker 200. For example, when a small bundle is transported after a large bundle, the interval is reduced, so it is necessary to temporarily wait for the newspaper bundle S at the standby position in order to secure time for preparing the underlay. In this case, the stop position (standby position) varies depending on the weight of the newspaper bundle S, and the transport timing is deviated.

  As described above, when the conveyance speed and the conveyance timing are changed, it is difficult to accurately stack the newspaper bundle S on the underlay D. For example, if the size of the underlay D projecting from the periphery of the bottom surface of the newspaper bundle (determined by the length a of the leading end portion of the underlay D protruding from the conveyor 300) changes, In addition to being out of position, it may not be possible to bundle the paper correctly, the address may not be loaded at the exact position, and the newspaper bundle may collapse.

  The present invention has been made in view of the above problems, and even if the conveyance speed and conveyance timing of a flexible body such as a newspaper bundle change, the underlay transmission timing and the speed adjustment at the time of transmission are adjusted accordingly. Therefore, an object of the present invention is to provide an underlay supply device that can accurately load a flexible body on an underlay and that is simple in mechanism and control.

In order to solve the above-mentioned problem, the invention according to claim 1 supplies an underlay on a transport path for transporting a flexible body such as a bundle of printing paper, and the flexible body is interlocked with the transport of the flexible body. In the underlay supply device for loading the underlay on the underlay, a stocker for storing a plurality of underlays in a stacked state, and an underlay sending means for sending out the underlay from the stocker one by one in contact with the underlay, When the trailing edge of the underlay sent by the underlay sending means is detached from the underlay sending means, a drive stop means for stopping the driving of the underlay sending means, and when the underlay is detached from the underlay sending means And the positioning means for positioning the underlay sending means so that the leading end portion of the underlay protrudes a predetermined dimension on the transport path, and the underlay sending means Receiving the underlay, guiding means for guiding the underlay toward the transport path, and holding the underlay with the leading end of the underlay projecting a predetermined dimension on the transport path, and being transported on the transport path An underlay holding means for releasing the holding of the underlay when the coming flexible body comes into contact with the tip portion of the underlay, and at least a part of the underlay holding means from the underlay delivery means When the underlay is detached, it is positioned in the vicinity of the rear end of the underlay to restrict the retreat of the underlay.

According to this configuration, the sheet-like underlays stacked on the stocker are sent out from the stocker one by one by the underlay sending means in contact with the underlay. The underlay sent out from the stocker by the underlay sending means is directed to the conveyance path of the flexible body by the guide means.
The underlay sending means is positioned by the positioning means at a position where a tip of the underlay protrudes on the transport path by a predetermined dimension when the underlay is detached from the underlay sending means. For this reason, when the leading edge of the underlay is sent to a position where it protrudes from the conveying path by a predetermined dimension, the underlay sending means is disengaged from the rear end of the underlay, so that the sending operation of the underlay is stopped. Thereafter, the underlay is held at the position by the underlay holding means.
When the flexible body transported on the transport path comes into contact with the leading end portion of the underlay protruding from the transport path, the underlay is released onto the transport path as the flexible body is transported while releasing the holding of the underlay. Then, the flexible body is loaded at a predetermined position on the underlay.

  For example, as described in claim 2, the underlay sending means can be configured to include a driving body such as a motor and a sending roller rotated by the driving body. In this case, it is preferable to use a feed roller having a high coefficient of friction so as to come into contact with the underlay without slipping, or a roller subjected to surface treatment such as knurling so as not to cause slipping.

  The drive stopping means may be any means as long as it can stop the driving of the underlay sending means when the rear end of the underlay is detached from the underlay sending means. A timer that sets a time from the start of sending the underlay to the time when the rear end of the underlay is detached from the underlay sending means may be used. You may use detection means, such as a sensor which outputs a detection signal when it detaches from the underlay sending means.

As described in claim 5, the guide means may have a function of the underlay holding means for holding the underlay by friction with the underlay.
In this way, by holding the underlay by friction, the configuration of the guiding means and the underlay holding means can be extremely simplified.
Further, as described in claim 6, the transport path of the underlay guided by the guide means is a lateral portion in the same direction as the delivery direction of the base sent out from the stocker, and from the lateral portion to the transport path. The length of the horizontal portion is larger than the length of the upward portion, and the ratio of the lengths of the two portions does not move due to its own weight or mechanical vibration. It is good also as what.

  The ratio of the lengths of the two portions can be determined by experience and experiment in consideration of conditions such as the type and size of the underlay, the material of the guide and the like constituting the guide means, or the processing state of the guide surface. For example, in the case of plain paper used as an underlay for ordinary newspaper bundles, when the guide surface of the guide means is finished by Teflon (registered trademark) processing, the ratio of the length of the upward portion to the lateral portion is set to It may be about 1: 2 to 1: 4.

Further, as described in claim 7 , the positioning means includes a driving body that moves the underlay sending means, and the underlay sending means based on the dimensions of the underlay and the length of the tip portion that protrudes from the conveyance path. And a control unit that controls the driving of the driving body.
By doing in this way, for example, even when it becomes necessary to change the length of the tip portion that protrudes from the conveyance path in accordance with the change in the size of the flexible body, the length according to the changed length Thus, the position of the underlay sending means can be automatically adjusted.

  According to the present invention, on the basis of the size of the underlay and the length of the tip of the underlay protruding from the conveyance path, the position of the underlay sending part is adjusted appropriately, and the sending speed when sending the underlay is adjusted. Therefore, it is possible to obtain an underlay supply device having a simple configuration that can accurately load the flexible body on the underlay regardless of the size of the flexible body, the conveyance speed, and the conveyance timing.

DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a schematic diagram illustrating the configuration of an underlay supply device according to an embodiment of the present invention.
1, the same parts and the same members as those of the conventional underlay supply apparatus shown in FIGS. 7 to 9 are denoted by the same reference numerals, and detailed description thereof is omitted.
As shown in FIG. 1, the underlay supply device 1 of this embodiment includes an underlay sending unit 3 that sends out the underlay D while being in contact with the underlay D, and an underlay D that is sent from the stocker 101 by the underlay sending unit 3. And an inverted L-shaped guide 2 that guides toward the upper surface of the conveyor 300.

Details of the underlay sending unit 3 will be described with reference to FIGS. 2 and 3.
As shown in FIG. 2, the underlay sending unit 3 includes a support arm 33 that is rotatably supported by a shaft 33 a, and is rotatably attached to one end of the support arm 33 and is in contact with the underlay D. A delivery roller 31 for delivering D, a motor 32 as a driving body for rotating the delivery roller 31, and the other end of the support arm 33 are coupled to constantly urge the support arm 33 in the clockwise direction and the delivery roller 31. And a spring 34 as an urging means that presses against the underlay D.

As the feed roller 31, it is preferable to use a roller made of a material that has a large friction coefficient with the underlay D and does not easily slide with the underlay D. Moreover, you may use what gave surface treatments, such as an uneven | corrugated process, so that it may be hard to produce slip with the underlay D.
As the spring 34, having when sending roller 31 sends out the underlay D, the urging force that presses the feed roller 31 to the underlay D in without causing slip force between the delivery roller 31 and the underlay D Choose one. As long as the feeding roller can be pressed against the underlay D with such an urging force, the urging means is not limited to the spring 34 but may be an air cylinder or the like.

  The start of driving of the motor 32 is controlled by an underlay preparation command from the counter stacker 200. That is, as soon as the newspaper stack S is pushed out of the counter stacker 200 onto the conveyor 300 by a pusher or the like, an underlay preparation command from the counter stacker 200 is output to the underlay supply device 1 and the drive of the motor 32 is started. Then, by driving the motor 32, the sending roller 31 rotates and sends the underlay D from the stocker 101. When the newspaper bundle S sent from the counter stacker 200 is a minimal bundle that does not require the underlay D, the underlay preparation command is not output, for example, so that the motor 32 is not driven. It is also possible.

  The driving of the motor 32 is stopped when the rear end of the underlay D is detached from the delivery roller 31. This drive stop control can be performed by, for example, a timer T as shown in FIG. 3A, or by a limit switch 35 as shown in FIG. 3B.

  In the example shown in FIG. 3A, the timer T starts counting by the underlay preparation command from the counter stacker 200, and the timer T times up at the time when the rear end of the underlay D is detached from the delivery roller 31, The drive of the motor 32 is stopped. Also, sensors 121a and 122a as shown in FIG. 7 are provided in the middle of the guide 2, and the timer T starts counting after the sensors 121a and 122a detect the leading edge of the underlay D. At the time of leaving from 31, the timer T may be up and the drive of the motor 32 may be stopped.

  Therefore, in the former case, the sending speed of the underlay D by the sending roller 31 and the length dimension of the underlay D in the sending direction, and in the latter case, the sending speed of the underlay D by the sending roller 31 and the sensors 121a and 122a are put down. Based on the remaining length of the underlay D when the leading edge of D is detected, a time for the timer T to time up is set in advance. When the driving stop control of the motor 32 is performed by the timer T, the sending speed of the underlay D and the sending direction of the underlay D are set so that the driving of the motor 32 is stopped after the trailing end of the underlay D is surely detached from the sending roller 31. It is preferable to set the time-up time of the timer T slightly longer than the time obtained from the length dimension or the remaining length dimension.

  In the example shown in FIG. 3B, a limit switch 35 is provided opposite to the other end of the support arm 33, and the push button 35 a of the limit switch 35 is switched on / off as the support arm 33 rotates. ing. In this example, when the rear end of the underlay D is disengaged from the delivery roller 31 and the support arm 33 rotates clockwise about the shaft 33a, the other end of the support arm 33 pushes the push button 35a of the limit switch 35. Press to output detection signal. The drive of the motor 32 is stopped by this detection signal. The example shown in FIG. 3B is effective when the underlay D has a certain thickness, such as the underlay D made of cardboard.

FIG. 4 is a diagram for explaining the position of the underlay sending part 3 necessary for projecting the leading end portion of the underlay D from the upper surface of the conveyor 300 by a predetermined length a, and a portion in which a part of the guide 2 and the conveyor 300 is omitted. It is an enlarged view. The length a to be projected is determined in advance depending on the type and size of the newspaper bundle S.
As shown in FIG. 4, when the length of the path along the feeding direction of the underlay D is L and the length of the tip portion to be projected is a, the sending roller 31 of the underlay sending section 3 is moved from the upper surface of the conveyor 300. , It is necessary to position and attach to the position La along the guide 2. By doing in this way, when the rear end of the underlay D sent out by the underlay sending portion 3 is detached from the sending roller 31, the leading end portion of the underlay D can be protruded from the upper surface of the conveyor 300 by the length a. . In this embodiment, a mounting member (not shown) that accurately positions and mounts the underlay sending portion 3 at the above-described position constitutes positioning means.

  Further, when the route of length L is divided into an upward portion (portion indicated by length L1) and a horizontal portion (portion indicated by L2), the length L2 of the horizontal portion is equal to that of the upward portion. It is desirable that the length D1 is sufficiently longer than the length L1 so that the underlay D does not easily retreat due to its own weight, mechanical vibration, or the like. The ratio between the length L1 and the length L2 is the type and size of the underlay D, the material of the guide members 21 and 22, which will be described later, or the processing state of the inner surface (closely related to the magnitude of the frictional resistance with the underlay D), etc. Considering these conditions, it is recommended to determine the most appropriate one based on experience and experiment.

For example, in the case of plain paper used as an underlay for an ordinary newspaper bundle, if the inner surfaces of the guide members 21 and 22 are made of a low-friction Teflon (registered trademark) finish, the length of the upward portion and the lateral portion is long. The ratio L1: L2 is preferably about 1: 2 to 1: 4.
As described above, in this embodiment, the positioning of the underlay delivery unit 3 is performed, and the leading end portion of the underlay D is reliably conveyed by a preset length a regardless of the sending speed and the sending timing of the underlay D. It can protrude from the top surface of 300.

The positioning and position adjustment of the above-described underlay delivery unit 3 may be performed manually, but can be automatically performed by providing positioning means 37 as shown in FIGS. .
In this embodiment, the support member 36 to which the support arm 33 is attached is provided on the main body 30 (shown by phantom lines in FIG. 2) of the underlay sending part 3 so that the position can be adjusted in the front-rear direction (the left-right direction in FIG. It has been. A screw shaft 37 a is screwed onto the support member 36, and a motor 37 b such as a stepping motor that rotates the screw shaft 37 a is attached to the main body 30.

  The motor 37b is driven by a control unit of the underlay supply device 1 (not shown). For example, when it is necessary to change the length a that protrudes from the upper surface of the conveyor 300 according to the size of the newspaper bundle. The delivery roller 31 can be moved to an appropriate position by driving the motor 37b by a drive command signal from the control unit. Control of driving and stopping of the motor 37b may be performed by an operator manually operating a switch provided on the control panel. For example, as shown in FIG. The position of the corresponding delivery roller 31 (the position indicated by (i), (ii), (iii) in the figure) is set in the control unit in advance, so that the delivery roller 31 is automatically moved to an appropriate position. It is possible to make it. That is, when the length a is changed according to the change of the size of the newspaper bundle, etc., the position corresponding to the changed length a (any one of the above (i), (ii), (iii)) The drive command signal is output from the control unit to the motor 37b so that the feed roller 31 is moved to the position).

Next, the configuration and operation of the guide 2 as the guiding means will be described with reference to FIG.
As shown in FIG. 4, the guide 2 includes a pair of upper and lower guide members 21 and 22 formed in an inverted L shape. A gap through which the underlay D passes is formed between the guide members 21 and 22, and the underlay D is guided toward the upper surface of the conveyor 300 through this gap.

Although the size of the gap varies depending on the type and thickness of the underlay D, it is preferable to select the smallest one within a range in which the underlay D can be smoothly sent by the underlay sending unit 3.
Further, as shown in the figure, for example, one end (the end on the stocker 101 side) of the upper guide member 21 is extended to the upper side of the stocker 101, and one end of the lower guide member 22 is bent downward, so that the underlay D is formed. It is preferable to be surely guided between the guide members 21 and 22.

  The underlay D delivered from the underlay delivery section 3 passes through the gap between the inverted L-shaped guide members 21 and 22 while being guided by the guide members 21 and 22. At this time, the underlay D is guided by the guide member 21. , 22 is brought into contact with the inner surface. Accordingly, if there is a large frictional resistance between the inner surfaces of the guide members 21 and 22 and the underlay D, there is a possibility that the delivery of the underlay D may be hindered. Therefore, in order to reduce the frictional resistance between the inner surfaces of the guide members 21 and 22 and the underlay D, the guide members 21 and 22 are preferably formed of a material having a small coefficient of friction with the underlay D. Further, the inner surfaces of the guide members 21 and 22 may be subjected to friction reduction processing such as Teflon (registered trademark) processing.

  Moreover, even if the frictional resistance between the inner surfaces of the guide members 21 and 22 and the underlay D is reduced by appropriately selecting the length L1 of the upward portion and the length L2 of the lateral portion, the upward portion Depending on the weight of the underlay D, mechanical vibration, etc., it is possible to prevent the underlay D from easily retreating. And by doing in this way, even if the rear end of underlay D leaves | separates from the sending roller 31, underlay D can be hold | maintained in the state which made the front-end | tip part protruded from the upper surface of the conveyor 300 by length a. Furthermore, the holding state can be easily released by pulling the underlay D toward the conveyor 300 with a small force, and the underlay D can be pulled out to the upper surface of the conveyor 300.

  As described above, in this embodiment, the guide 2 holds the underlay D in a state in which the tip portion protrudes from the conveyor 300 by the predetermined dimension a, and the newspaper bundle S conveyed by the conveyor 300 is the tip of the underlay D. An underlay holding means for releasing the hold of the underlay D when it abuts the portion is configured.

Further, in this embodiment, even after the rear end of the underlay D is detached from the feed roller 31, the feed roller 31 is located in the vicinity of the rear end of the underlay D. For this reason, even if the underlay D attempts to retreat due to its own weight, mechanical vibration, or the like, the retreat is regulated by the rear end of the underlay D coming into contact with the delivery roller 31.
That is, in this embodiment, the underlay sending part 3 also constitutes an underlay holding means for holding the underlay D in a state where the tip of the underlay D protrudes by a predetermined length a on the conveyor 300.

The operation of the underlay supply device 1 having the above configuration will be described with reference to FIGS. 2 to 4 and 5.
When the newspaper stack S is sent from the counter stacker 200 to the conveyor 300, simultaneously, an underlay preparation command is output from the counter stacker 200, and the motor 32 of the underlay sending unit 3 starts to be driven. As a result, the sending roller 31 rotates and sends the underlay D from the stocker 101.

  The delivered underlay D is directed to the conveyor 300 by the guide 2. Then, when the leading end portion protrudes from the upper surface of the conveyor 300 by a predetermined length a, the rear end of the underlay D is detached from the delivery roller 31 as shown in FIG. The drive of the motor 32 is stopped by the action of the limit switch 35, and the sending operation of the underlay D by the underlay sending unit 3 is completed.

  When the rear end of the underlay D is detached from the delivery roller 31, the support arm 33 is rotated in the clockwise direction, and the delivery roller 31 is pressed against the underlay D of the next layer. The timer T and the limit switch 35 shown in FIGS. 3A and 3B are stopped in a short time after the separation or immediately after the separation, so that there is no inconvenience that the underlay D of the next layer is sent to the guide 2.

The underlay D is held by the guide 2 serving as the underlay holding means and the underlay delivery section 3 with the tip portion protruding from the upper surface of the conveyor 300 by a length a. The position is not easily changed depending on the mechanical vibration accompanying the driving of the motor.
Then, as shown in FIG. 5A, when the newspaper bundle S conveyed by the driving of the conveyor 300 comes into contact with the leading end portion of the underlay D, the leading end portion of the underlay D is pressed against the conveyor 300 by the newspaper bundle S, As shown in FIG. 5B, the underlay D is drawn out from the guide 2 to the conveyor 300 side. Since the drawer D and the transport of the newspaper bundle S are synchronously driven by the conveyor 300, the newspaper bundle S is accurately stacked on the underlay D as shown in FIG.

FIG. 6 is a diagram showing another embodiment of the present invention, and is an enlarged view for explaining the configuration of the underlay sending part 3 ′.
In FIG. 6, the same parts and the same members as those in the underlay sending part 3 of FIGS.
The underlay delivery portion 3 ′ of this embodiment is provided with a cylinder 38 opposite to the other end of the support arm 33. The piston rod 38a, which can be moved forward and backward of the cylinder 38, pushes the other end of the support arm 33, so that the support arm 33 can be rotated counterclockwise. The driving of the cylinder 38 is stopped by a time-up signal of the timer T shown in FIG. 3A or a detection signal of the limit switch 35 shown in FIG.

In this embodiment, when the rear end of the underlay D is detached from the delivery roller 31, the cylinder 38 is driven by the time-up signal of the timer T or the detection signal of the limit switch 35, and the support arm 33 is rotated counterclockwise. . Thereby, the delivery roller 31 does not contact the underlay D of the next layer.
In this embodiment, when the rear end of the underlay D is detached from the sending roller 31, the sending roller 31 rotates counterclockwise together with the support arm 33 and moves away from the rear end of the underlay D. The underlay sending part 3 'does not have a function as an underlay holding means as described above, but the rear end of the underlay D is detached from the sending roller 31 by using the same guide 2 as in the previous embodiment. After that, the underlay D can be regulated so as not to move.

Although a preferred embodiment of the present invention has been described, the present invention is not limited to the above description.
For example, in the above description, the positioning unit 37 is described as being configured by the motor 37b and the screw shaft 37a. However, the positioning unit 37 is not limited to the above as long as the position can be automatically adjusted. Alternatively, a cylinder or a rack and pinion mechanism may be used.

  In the above description, a newspaper bundle is described as an example of the flexible body. However, the present invention may cause deformation or crushing when transporting by a conveyor or binding by a binding machine. As long as it is a flexible body that is prone to problems and requires an underlay, it can be applied to all types of flexible bodies such as a stack of other printing paper bundles and sheets.

  The present invention is not limited to printing paper bundles such as newspapers as long as it has flexibility and is transported by transport means such as a conveyor, and is used for transporting resin sheets and other flexible bodies. Applicable to underlay supply.

It is the schematic explaining the structure of the underlay supply apparatus concerning one Embodiment of this invention. It is a figure explaining the detail of an underlay transmission part. FIG. 3A shows an example of using a timer and FIG. 3B shows an example of using a limit switch. It is a figure explaining the position of an underlay sending part required in order to make the front-end | tip part of an underlay protrude from the upper surface of a conveyor of predetermined length. It is a figure explaining the effect | action of the underlay supply apparatus of this invention. It is a figure which shows other embodiment of this invention, and is an enlarged view explaining the structure of an underlay transmission part. It is the schematic concerning the prior art example of this invention, and demonstrates the structure of the underlay supply apparatus which supplies the sheet-like underlay one by one from the stocker provided under the conveyor. It is an enlarged view explaining the detail of a level detection part. It is an enlarged view explaining the detail of an underlay sending part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Underlay supply apparatus 2 Guide 21, 22 Guide member 3 Underlay sending part 30 Main body 31 Sending roller 32 Motor 33 Support arm 34 Spring 35 Limit switch 37 Positioning means 37a Screw shaft 37b Motor 38 Cylinder D Underlay S Newspaper bundle (flexible body)

Claims (7)

In the underlay supply device for supplying an underlay on a conveyance path for conveying a flexible body such as a bundle of printing paper, and stacking the flexible body on the underlay in conjunction with the conveyance of the flexible body,
A stocker for storing a plurality of underlays in a laminated state;
An underlay sending means for sending out the underlay from the stocker one by one in a state in contact with the underlay;
A driving stop means for stopping the driving of the underlay sending means when the rear end of the underlay sent by the underlay sending means is detached from the underlay sending means;
Positioning means for positioning the underlay sending means such that when the underlay is detached from the underlay sending means, a leading end portion of the underlay projects a predetermined dimension on the transport path;
Guidance means for receiving the underlay sent by the underlay sending means and guiding the underlay toward the transport path;
When holding the underlay in a state where the leading end portion of the underlay protruded by a predetermined dimension on the transport path, and when the flexible body transported on the transport path abuts the front end portion of the underlay, An underlay holding means for releasing the hold of the underlay; and
An underlay supply device, wherein at least a part of the underlay holding means is positioned in the vicinity of a rear end of the underlay when the underlay is detached from the underlay delivery means, and the retreat of the underlay is restricted .   2. The underlay according to claim 1, wherein the underlay sending means includes a feed roller that rotates while contacting the underlay without slipping when sending the underlay, and a driving body that rotates the feed roller. Feeding device.   The said drive stop means has a timer which set the time until the rear end of the said underlay leaves | separates from the said underlay sending means after starting sending out of the above-mentioned underlay, It is characterized by the above-mentioned. Underlay supply device.   3. The underlay supply device according to claim 1, wherein the drive stopping unit is a detection unit that detects the separation when a rear end of the underlay is detached from the underlay sending unit.   The underlay supply device according to any one of claims 1 to 4, wherein the guide means has a function of the underlay holding means for holding the underlay by friction with the underlay.   When the transport path of the underlay guided by the guide means includes a lateral part in the same direction as the delivery direction of the base sent out from the stocker and an upward part from the lateral part toward the transport path, The length of the lateral portion is made larger than the length of the upward portion, and the ratio of the lengths of both portions is such that the underlay does not move due to its own weight or mechanical vibration. The underlay supply device according to any one of 5. The positioning means determines the position of the underlay sending means based on the driving body for moving the underlay sending means, and the length of the tip portion projecting from the transport path and the size of the underlay, and driving the driving body The underlay supply device according to claim 1 , further comprising a control unit that controls the underlaying device.

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