Sheet bundle binding device and rotation detection method

Abstract

The invention provides a paper bundle binding device and a rotation detection method, which can properly detect the rotation state of a reel and recognize the residual amount of a metal wire wound on the reel. A saddle-stitching folding device according to the present invention is provided with: a stapler unit; a reel support part (20) that supports the reel (200) so that the reel (200) can rotate about an axis (A) in a state in which the support shaft (21) is inserted into a through hole (201) formed in the reel (200); and a rotation detection mechanism (30) that detects the rotation state of the reel (200), the rotation detection mechanism (30) having: an adsorption member (31) that rotates in a state of being adsorbed on the lower surface (202) of the reel (200); a rotating member (32) having an insertion hole into which the support shaft (21) is inserted; and a rotation detection unit (33) that detects the rotation state of the rotating member (32).

Description

Technical Field

[0001] The present invention relates to a paper stack binding device and a rotation detection method for detecting the rotation of a reel used in the paper stack binding device. Background Art

[0002] Conventionally, there has been known a paper stack binding device that cuts a wire into a predetermined length and bends the cut wire to bind a paper stack (for example, see Patent Document 1). The paper stack binding device disclosed in Patent Document 1 supplies a wire from a reel around which the wire is wound to a stapler head. In Patent Document 1, it is disclosed that when the stapler head pulls in the wire, a detector detects a change in the position of a spring plate guide that guides the wire, and when no change in the position of the spring plate guide is detected, it is determined that there is no wire left on the reel.

[0003] Prior Art Documents

[0004] Patent Documents

[0005] Patent Document 1: Japanese Patent No. 5013933 Gazette Summary of the Invention

[0006] Problems to be Solved by the Invention

[0007] However, in the method of determining the presence or absence of a wire on a reel by detecting a change in the position of a spring plate guide, there is a possibility that although there is wire remaining on the reel, it is erroneously detected that there is no wire on the reel. For example, when the remaining amount of the wire wound around the reel becomes small, the change in the position of the spring plate guide becomes small, so there is a possibility of erroneously detecting that there is no wire on the reel.

[0008] In addition, for example, in the case of adopting a method of directly detecting the presence or absence of a wire, there is a possibility that the manufacturing cost of the device increases, or the detection part is worn when detecting the wire and the wear progresses to cause an erroneous detection. In addition, for example, since the reel will no longer rotate when there is no wire, a method of detecting the rotation of the reel by a sensor or the like has also been considered, but it is difficult to appropriately detect the rotation of reels of various shapes.

[0009] The present invention has been completed in view of the above problems, and an object thereof is to provide a paper stack binding device and a rotation detection method that can appropriately detect the rotation state of a reel and identify the remaining amount of a wire wound around the reel even when reels of various shapes are used.

[0010] Means for Solving the Problems

[0011] A paper stack binding device according to one aspect of the present invention includes: a stapler unit that performs a binding operation of binding a paper stack with a wire at a predetermined binding position; a reel support unit that supports a reel wound with the wire in a state where a support shaft extending along an axis is inserted into a through hole formed in the reel so that the reel can rotate around the axis; a rotation detection mechanism that detects the rotation state of the reel; and a wire feeding unit that performs a feeding operation of unwinding the wire from the reel and supplying it to the stapler unit. The rotation detection mechanism includes: an adsorption member that rotates around the axis together with the reel in a state of being adsorbed on the lower surface of the reel; a rotation member that is connected to the adsorption member so as to rotate around the axis together with the adsorption member and has an insertion hole into which the support shaft is inserted; and a rotation detection unit that detects the rotation state of the rotation member.

[0012] In the paper stack binding device according to one aspect of the present invention, when the wire feeding unit performs the feeding operation, the wire is unwound from the reel, and the reel rotates around the support shaft of the reel support unit. The rotation of the reel is transmitted to the rotation member through the adsorption member that rotates in a state of being adsorbed on the lower surface of the reel. By detecting the rotation state of the rotation member by the rotation detection unit, even when reels of various shapes are used, the rotation state of the reel can be appropriately detected and the remaining amount of the wire wound on the reel can be identified.

[0013] In the paper stack binding device according to one aspect of the present invention, it may be configured to include a control unit that controls the paper stack binding device. When the wire feeding unit performs the feeding operation, if the rotation detection mechanism detects a non-rotation state in which the reel does not rotate, the control unit instructs an upstream device that conveys the paper stack to the paper stack binding device to stop conveying the paper stack to the paper stack binding device.

[0014] According to the paper stack binding device of this structure, in the non-rotation state where the reel does not rotate, by instructing the upstream device to stop conveying the paper stack to the paper stack binding device, it is possible to appropriately prevent the situation of conveying the paper stack to the paper stack binding device without the wire wound on the reel.

[0015] In the paper stack binding device having the above structure, it may also be configured as follows. That is, the rotating member has a plurality of opening holes arranged at intervals along the circumferential direction centered on the insertion hole. The rotation detection unit is provided at a predetermined position through which the opening hole passes when the rotating member rotates around the axis, and detects the state of the opening hole passing through the predetermined position.

[0016] According to the paper stack binding device of the above method, by detecting, with the rotation detection unit, the state of a plurality of opening holes arranged on the rotating member passing through the predetermined position, the rotation state of the reel can be identified.

[0017] In the paper stack binding device of the above method, it may also be configured as follows. That is, when the rotation detection unit detects the state that the opening hole does not pass through the predetermined position for the predetermined number of times in two or more supply operations, the control unit instructs the upstream device to stop the conveyance of the paper stack to the paper stack binding device.

[0018] According to the paper stack binding device of this method, even if the state that the opening hole does not pass through the predetermined position is erroneously detected for one supply operation, it is only the case of this erroneous detection and the conveyance of the paper stack from the upstream device to the paper stack binding device is not stopped.

[0019] In the paper stack binding device having the above structure, it may also be configured as follows. That is, the upstream device is a collator. The collator has a plurality of paper supply trays and a paper supply unit for supplying paper from each paper supply tray, and conveys the paper stack obtained by collating the paper supplied from the plurality of paper supply trays to the paper stack binding device. The control unit instructs the collator to stop the paper supply performed by the paper supply unit.

[0020] According to the paper stack binding device of this method, by instructing the collator to stop the paper supply performed by the paper supply unit in the non-rotating state where the reel does not rotate, it is possible to appropriately prevent the case where the paper stack is conveyed to the paper stack binding device without the wire being wound around the reel.

[0021] In the paper stack binding device according to one aspect of the present invention, the following structure may also be adopted, that is, a control unit is provided, which controls the paper stack binding device. The control unit controls in such a manner that when the wire feeding unit performs the supply action, if the rotation detection mechanism detects the rotation state of the reel rotating, the stapler unit is set to the action state of performing the binding action; if the rotation detection mechanism detects the non-rotation state of the reel not rotating, the stapler unit is set to the stop state of not performing the binding action.

[0022] According to the paper stack binding device with this structure, by using the rotation detection mechanism to detect whether it is the rotation state of the reel rotating or the non-rotation state of the reel not rotating, the stapler unit can be appropriately controlled to the action state or the stop state.

[0023] In the paper stack binding device with the above structure, the following manner may also be adopted, that is, the rotating member has a plurality of opening holes arranged at intervals along the circumferential direction centered on the insertion hole. The rotation detection unit is provided at a predetermined position through which the opening hole passes when the rotating member rotates around the axis, and detects the state of the opening hole passing through the predetermined position.

[0024] According to the paper stack binding device with the above manner, by using the rotation detection unit to detect the state of a plurality of opening holes arranged on the rotating member passing through the predetermined position, the rotation state of the reel can be identified.

[0025] In the paper stack binding device with the above manner, the following manner may also be adopted, that is, the control unit controls in such a manner that when the rotation detection unit detects the state that the opening hole does not pass through the predetermined position for the predetermined number of times in two or more supply actions, the stapler unit is set to the stop state.

[0026] According to the paper stack binding device with this manner, even if the state that the opening hole does not pass through the predetermined position is misdetected for one supply action, it can be ensured that only this misdetection occurs and the stapler unit does not become the stop state.

[0027] In a rotation detection method for detecting the rotation of a reel used in a paper stack binding device according to an aspect of the present invention, the paper stack binding device includes: a stapler unit that performs a binding operation of binding a paper stack with a wire at a predetermined binding position; a reel support unit that supports a reel wound with the wire in a state where a support shaft extending along an axis is inserted into a through hole formed in the reel so that the reel can rotate around the axis; a rotation detection mechanism that detects the rotation state of the reel; and a wire feeding unit that performs a feeding operation of unwinding the wire from the reel and supplying it to the stapler unit. The rotation detection mechanism includes: an adsorption member that rotates around the axis together with the reel in a state of being adsorbed on the lower surface of the reel; and a rotation member that is connected to the adsorption member so as to rotate around the axis together with the adsorption member and has an insertion hole into which the support shaft is inserted. The rotation detection method includes a rotation detection step of detecting the rotation state of the rotation member.

[0028] According to the rotation detection method according to an aspect of the present invention, when the wire feeding unit performs the feeding operation, the wire is unwound from the reel, and the reel rotates around the support shaft of the reel support unit. The rotation of the reel is transmitted to the rotation member via the adsorption member that rotates in a state of being adsorbed on the lower surface of the reel. By detecting the rotation state of the rotation member in the rotation detection step, even when reels of various shapes are used, the rotation state of the reel can be appropriately detected and the remaining amount of the wire wound around the reel can be identified.

[0029] In the rotation detection method according to an aspect of the present invention, it may be configured as follows: an instruction step is provided. When the wire feeding unit performs the feeding operation and the rotation detection step detects a non-rotation state in which the reel does not rotate, the instruction step instructs an upstream device that conveys the paper stack to the paper stack binding device to stop conveying the paper stack to the paper stack binding device.

[0030] According to the rotation detection method of this configuration, by instructing the upstream device to stop conveying the paper stack to the paper stack binding device in a non-rotation state where the reel does not rotate, it is possible to appropriately prevent the situation of conveying the paper stack to the paper stack binding device without the wire wound around the reel.

[0031] In the rotation detection method according to one aspect of the present invention, the following structure may also be adopted. That is, a control process is provided, and the control process controls in such a manner that when the supply operation is performed in the wire feeding unit, if the rotation detection process detects a rotation state in which the reel rotates, the stapler unit is set to an operation state in which the stapling operation is performed; and if the rotation detection process detects a non-rotation state in which the reel does not rotate, the stapler unit is set to a stop state in which the stapling operation is not performed.

[0032] According to the rotation detection method of this structure, by detecting whether it is a rotation state in which the reel rotates or a non-rotation state in which the reel does not rotate through the rotation detection process, the stapler unit can be appropriately controlled to an operation state or a stop state.

[0033] Advantages of the Invention

[0034] According to the present invention, it is possible to provide a paper stack stapling device and a rotation detection method that can appropriately detect the rotation state of a reel and identify the remaining amount of wire wound around the reel even when reels of various shapes are used. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 An external view showing a bookbinding system connecting a collator, a saddle stitching folding device, and a paper cutter.

[0036] Figure 2 Viewed along the conveying direction Figure 1 A view of the stapler mechanism shown.

[0037] Figure 3 A side view showing a reel support portion and a rotation detection mechanism, and showing a state in which wire is supplied from the reel to the stapler mechanism.

[0038] Figure 4 A side view showing a reel support portion and a rotation detection mechanism, and showing a state in which wire is not supplied from the reel to the stapler mechanism.

[0039] Figure 5 For Figure 3 A C-C cross-sectional view of the rotation detection mechanism shown.

[0040] Figure 6 A block diagram showing the control structure of the saddle stitching folding device.

[0041] Figure 7 A flowchart showing the control method of the saddle stitching folding device.

[0042] Figure 8Flowchart showing a modified example of the control method for a saddle stitch folding device Detailed implementation mode

[0043] Hereinafter, a saddle stitch folding device (paper stack binding device) 100 according to an embodiment of the present invention will be described with reference to the accompanying drawings. Figure 1 It is an external view of a bookbinding system that shows a collator 2, a saddle stitch folding device 100, and a paper cutter 3 connected.

[0044] As Figure 1 shown, the bookbinding system includes a plurality of collators 2, a saddle stitch folding device 100, and a paper cutter 3. The collator 2 has a plurality of paper supply trays 2a in the height direction, collates the papers fed from the paper supply trays 2a through the paper supply rollers (paper supply section) 2a1 in page order to form a paper stack B, and conveys the paper stack B to the saddle stitch folding device 100.

[0045] The collator 2 conveys the papers fed from each paper supply tray 2a from above in the height direction downward to the transverse conveyor belt 2c through the longitudinal conveyor belt 2b. As Figure 1 shown, when two collators 2 are connected, the paper stack B collated by the upstream collator 2 is conveyed onto the transverse conveyor belt 2c of the downstream collator 2, and as the paper stack B with multiple additional papers collated in the downstream collator 2, it is then conveyed to the downstream saddle stitch folding device 100.

[0046] After the saddle stitch folding device 100 binds the paper stack B with wire, it forms a folded paper stack B and conveys it to the paper cutter 3. The paper cutter 3 cuts the ends of the paper stack B conveyed from the saddle stitch folding device 100 to make a booklet.

[0047] As Figure 1 shown, the saddle stitch folding device 100 includes a stapler mechanism 10, a reel support section 20, a rotation detection mechanism 30, a folding mechanism 40, a control section 50, and an operation panel 70. Here, the stapler mechanism 10 will be described with reference to Figure 2 . Figure 2 It is a view of the stapler mechanism 10 as Figure 1 observed along the conveying direction TD.

[0048] As Figure 2 shown, the stapler mechanism 10 has a wire feeding section 11 and a stapler section 12. The wire feeding section 11 performs a feeding operation of unwinding the wire from the reel 200W supported by the reel support section 20 and supplying it to the stapler section 12.

[0049] The wire feeding unit 11 includes a pair of feeding rollers 11a and a roller driving unit 11b. The pair of feeding rollers 11a rotate by the driving force transmitted from the roller driving unit 11b, thereby supplying the wire W to the stapling unit 12. In addition, as the structure of the wire feeding unit 11, other structures different from the structure shown in Figure 2 may also be adopted.

[0050] The stapling unit 12 has a wire holder 12a, a cutter 12b, and a stapling portion 12c. The wire holder 12a is a device for holding the wire W supplied from the wire feeding unit 11. The cutter 12b is a device for cutting the wire W held by the wire holder 12a. The stapling portion 12c is a device for stapling the wire W held by the wire holder 12a into the stack of papers B for binding. In this way, the stapling unit 12 performs a binding operation of binding the stack of papers B with the wire W at a predetermined binding position Pb (refer to Figure 1 ).

[0051] Next, with reference to Figures 3 to 5 , the reel support portion 20 of the support reel 200 and the rotation detection mechanism 30 for detecting the rotation of the reel 200 will be described. Figure 3 is a side view showing the reel support portion 20 and the rotation detection mechanism 30, and shows a state in which the wire W is supplied from the reel 200 to the stapling mechanism 10. Figure 4 is a side view showing the reel support portion 20 and the rotation detection mechanism 30, and shows a state in which the wire W is not supplied from the reel 200 to the stapling mechanism 10. Figure 5 is Figure 3 a sectional view taken along the line C-C of the rotation detection mechanism 30 shown in.

[0052] The reel support portion 20 has a support shaft 21 extending along the axis A and a fixing portion 22 for fixing the support shaft 21 to the housing of the saddle stitcher 100. The reel support portion 20 is a device for supporting the reel 200 in a state where the support shaft 21 is inserted into the through hole 201 formed in the reel 200 around which the wire W is wound, so that the reel 200 can rotate around the axis A.

[0053] The reel 200 is a member around which the wire W is wound, and is formed in a cylindrical shape extending along the axis A. The reel 200 has a lower surface 202 disposed on the lower side in the vertical direction VD and in contact with the adsorption member 31 of the rotation detection mechanism 30, and a concave portion 203 around which the wire W is wound.

[0054] The rotation detection mechanism 30 is a device for detecting the rotation state of the reel 200. As shown in Figure 3As shown, when the wire W is wound around the reel 200, the wire W wound around the reel 200 is in a state of being guided by the guide member 60 and supplied to the stapler mechanism 10. In this case, when the wire feeding unit 11 of the stapler mechanism 10 performs a feeding operation of supplying the wire W to the stapler unit 12, a part of the wire W wound around the reel 200 is unwound. When unwinding the wire W from the reel 200, the reel 200 rotates about the axis A.

[0055] On the other hand, as Figure 4 shown, when the wire W is not wound around the reel 200, even if the wire feeding unit 11 of the stapler mechanism 10 performs a feeding operation of supplying the wire W to the stapler unit 12, the reel 200 does not rotate about the axis A. The rotation detection mechanism 30 can detect the presence or absence of the wire W wound around the reel 200 by detecting the rotation state of the reel 200 when the wire feeding unit 11 performs a feeding operation of supplying the wire W to the stapler unit 12.

[0056] As Figure 3 and Figure 4 shown, the rotation detection mechanism 30 includes an adsorption member 31, a rotation member 32, and a rotation detection unit 33. The adsorption member 31 is a member that rotates about the axis A together with the reel 200 in a state of being adsorbed on the lower surface 202 of the reel 200. As Figure 5 shown, the adsorption member 31 is formed in an annular shape about the axis A.

[0057] For the adsorption member 31, in order to generate sufficient frictional force that does not cause slippage between it and the lower surface 202 of the reel 200, for example, it is preferably entirely formed of a rubber material. As Figure 3 and Figure 4 shown, the adsorption member 31 is inserted by the support shaft 21 in a state of contacting the lower surface 202 of the reel 200 above in the vertical direction VD and contacting the rotation member 32 below in the vertical direction VD.

[0058] For the adsorption member 31, when sufficient frictional force that does not cause slippage is generated between it and the rotation member 32, it is only necessary to be disposed above the rotation member 32 in the vertical direction VD in a state of contacting the rotation member 32. In addition, the adsorption member 31 may be joined to the rotation member 32 by an adhesive or the like so as not to cause slippage between it and the rotation member 32. Further, when joining the adsorption member 31 and the rotation member 32, the portion of the adsorption member 31 that contacts the lower surface 202 of the reel 200 may be formed of a rubber material, and the other portion may be formed of a material different from the rubber material (for example, a resin material).

[0059] The rotating member 32 is a plate-like member that is connected to the adsorption member 31 so as to rotate around the axis A together with the adsorption member 31 and has an insertion hole 32a into which the support shaft 21 is inserted. As Figure 5 shown, the rotating member 32 has a plurality of opening holes 32b arranged at intervals along the circumferential direction CD centered on the insertion hole 32a.

[0060] The rotation detection unit 33 is a device that detects the rotation state of the rotating member 32 around the axis A. As Figure 3 shown, the rotation detection unit 33 is provided on the fixed part 22 so as to detect a predetermined position through which the opening hole 32b passes when the rotating member 32 rotates around the axis A. The rotation detection unit 33 detects the state in which the opening hole 32b passes through the predetermined position as the rotation state.

[0061] The rotation detection unit 33 is, for example, a sensor that becomes a first output state at the timing when the portion where the opening hole 32b is formed passes through the predetermined position and becomes a second output state at the timing when the portion where the opening hole 32b is not formed passes through the predetermined position. The rotation detection unit 33 transmits the first output state or the second output state to the control unit 50.

[0062] When the wire feeding unit 11 performs a feeding operation of feeding the wire W to the stapler unit 12, for the rotation detection unit 33, in a state where the wire W exists on the reel 200, since the rotating member 32 rotates around the axis A together with the reel 200, a state of alternately repeating the first output state and the second output state is formed. On the other hand, for the rotation detection unit 33, in a state where the wire W does not exist on the reel 200, since the reel 200 and the rotating member 32 do not rotate around the axis A, either the first output state or the second output state is maintained as it is.

[0063] Next, with reference to Figure 6 , the control unit 50 will be described. Figure 6 is a block diagram showing the control structure of the saddle stitch folding device and the collator 2. The control unit 50 is a device that controls the saddle stitch folding device 100 including the stapler unit 12 and the wire feeding unit 11.

[0064] As Figure 6 shown, the control unit 50 has a stapler control unit 51 that controls the stapler unit 12 and the wire feeding unit 11, a folding mechanism control unit 52 that controls the folding mechanism 40, and a conveyance control unit 53. The output signal of the first output state or the second output state detected by the rotation detection unit 33 is transmitted to the stapler control unit 51.

[0065] The control unit 2A is a device that controls the collator (upstream device) 2 disposed on the upstream side in the transport direction TD of the saddle stitch folding device 100, and includes a transport control unit 2Aa that controls the feed rollers 2a1 for feeding multiple sheets of paper that form a stack of sheets B to be transported to the saddle stitch folding device 100 from a plurality of paper feed trays 2a. When the transport control unit 53 of the saddle stitch folding device 100 receives the stack of sheets B from the collator 2 and is capable of performing the saddle stitch folding process including the binding process performed by the stapler unit 12, the transport control unit 53 transmits a transport permission signal permitting the transport of the stack of sheets B from the collator 2 to the saddle stitch folding device 100 to the transport control unit 2Aa.

[0066] For the transport control unit 2Aa, when the transport permission signal is received from the transport control unit 53, it controls to transport the stack of sheets B from the collator 2 to the saddle stitch folding device 100, and when the transport permission signal is not received from the transport control unit 53, it controls not to transport the stack of sheets B from the collator 2 to the saddle stitch folding device 100.

[0067] Next, with reference to Figure 7 the control method of the saddle stitch folding device 100 of the present embodiment will be described. Figure 7 FIG. is a flowchart showing the control method of the saddle stitch folding device 100. Figure 7 Each of the processes shown is executed by a control program stored in the control unit 50.

[0068] In step S101, the control unit 50 determines whether to execute the binding action of the stack of sheets B. If the determination is yes, the process proceeds to step S102, and if the determination is no, the process of step S101 is repeated.

[0069] In step S102, the stapler control unit 51 controls the wire feeding unit 11 to start the supply action of unwinding the wire W from the reel 200 and supplying it to the stapler unit 12.

[0070] In step S103, the control unit 50 determines, based on the output signal transmitted from the rotation detection unit 33, whether the rotation detection unit 33 has detected a rotation state in which the reel 200 rotates about the axis A or a non-rotation state in which the rotation detection unit 33 has detected that the reel 200 does not rotate about the axis A. For the control unit 50, when the rotation detection unit 33 has detected the rotation state, the process proceeds to step S104, and when the rotation detection unit 33 has detected the non-rotation state, the process proceeds to step S107.

[0071] When the output signal output from the rotation detection unit 33 is in a state of repeating the first output state and the second output state, since the rotation detection unit 33 continuously detects the opening hole 32b passing through the predetermined position, the control unit 50 determines that the rotation detection unit 33 has detected a rotation state. In addition, when the output signal output from the rotation detection unit 33 maintains the first output state or the second output state without change, since the rotation detection unit 33 does not continuously detect the opening hole 32b passing through the predetermined position, the control unit 50 determines that the rotation detection unit 33 has detected a non-rotation state.

[0072] In addition, although in the above step S103, it is assumed that the control unit 50 causes the process to proceed to step S107 when the rotation detection unit 33 detects a non-rotation state, it can also be in other ways. For example, the control unit 50 can also be controlled in the following manner, that is, when the rotation detection unit 33 detects a state where the opening hole 32b does not pass through the predetermined position for a predetermined number of times for the supply operations of the wire feeding unit 11 more than twice, the process proceeds to step S107.

[0073] For example, when the predetermined number of times is set to three, for the control unit 50, even if the rotation detection unit 33 detects a state where the opening hole 32b does not pass through the predetermined position continuously twice for the supply operations of the wire feeding unit 11 twice, it is judged as yes in step S103. On the other hand, for the stapler control unit 51, when the rotation detection unit 33 detects a state where the opening hole 32b does not pass through the predetermined position continuously three times for the supply operations of the wire feeding unit 11 three times, it is judged as no in step S103.

[0074] In step S104, the stapler control unit 51 determines whether the supply operation of unwinding the wire W from the reel 200 and supplying it to the stapler unit 12 has ended. If yes, the process proceeds to step S105. If no, the determination in step S104 is repeated.

[0075] In step S105, the stapler control unit 51 controls the stapler unit 12 in such a way that the stapler unit 12 performs a binding operation on the stack of papers B. The stapler control unit 51 makes the stapler unit 12 be in an operation state of performing a binding operation when the rotation detection unit 33 detects a rotation state.

[0076] In step S106, the control unit 50 confirms whether there is a next stack of papers B conveyed from the collator 2. If there is no next stack of papers B conveyed from the collator 2, it is determined that the processing of this flowchart ends, and the processing of this flowchart ends. When the control unit 50 has a next stack of papers B conveyed from the collator 2, the processing after step S101 is executed again.

[0077] In step S107, when the wire feeding unit 11 of the conveying control unit 53 performs the supply operation, in the case where the rotation detection mechanism 30 detects a non-rotating state in which the reel 200 does not rotate, the conveying control unit 53 instructs the collator 2 that conveys the paper stack B to the saddle stitching folding device 100 to stop the conveyance of the paper stack B to the saddle stitching folding device 100. The conveying control unit 53 controls in such a manner that the conveyance permission signal for permitting the conveyance of the paper stack B from the collator 2 to the saddle stitching folding device 100 is not transmitted to the conveying control unit 2Aa.

[0078] For the conveying control unit 2Aa of the collator 2, since the conveyance permission signal is not transmitted, it controls so as not to convey the paper stack B to the saddle stitching folding device 100 and to stop the paper feeding performed by the paper feed roller 2a1. The collator 2 stops the paper feeding performed by the paper feed roller 2a1 when no conveyance permission signal is transmitted from the saddle stitching folding device 100, and stops operating after conveying the already collated paper stack B to the saddle stitching folding device 100 through the lateral conveyor belt 2c. In this way, the conveying control unit 53 controls by not transmitting the conveyance permission signal to the conveying control unit 2Aa, thereby stopping the collation and conveyance of the paper stack B following the already collated paper stack B.

[0079] In step S108, since it is in the non-rotating state where the reel 200 does not rotate about the axis A, the control unit 50 notifies the operator that there is no remaining amount of the wire W. The control unit 50, for example, displays on the operation panel 70 connected to the control unit 50 that there is no remaining amount of the wire W, thereby prompting the operator to replace the reel 200.

[0080] In step S109, the control unit 50 determines whether the replacement of the reel 200 has been performed. If yes, the process proceeds to step S110. If no, the determination in step S109 is repeated. The control unit 50 determines that the replacement of the reel 200 has been performed and makes the process proceed to step S110 when the operator has input, via an operation panel (not shown), that the replacement of the reel 200 has been performed.

[0081] In step S110, the conveyance control unit 53 instructs the collator 2 to resume the conveyance of the stack of sheets B from the collator 2 to the saddle stitch folding device 100 that was stopped in step S107. The conveyance control unit 53 controls in such a way that a conveyance permission signal permitting the conveyance of the stack of sheets B from the collator 2 to the saddle stitch folding device 100 is transmitted to the conveyance control unit 2Aa of the collator 2. For the conveyance control unit 2Aa of the collator 2, since the conveyance permission signal is received, it controls to resume the paper feeding performed by the paper feed roller 2a1 in order to convey the stack of sheets B to the saddle stitch folding device 100. After executing step S110, the control unit 50 repeats the execution of the processes after step S101 again.

[0082] In addition, in step S103, when the rotation detection unit 33 detects a non-rotating state, since no stack of sheets B is conveyed from the collator 2, the control unit 50 does not execute the binding operation of the stapler unit 12 in step S105.

[0083] In addition, although in the above description, it is assumed that when the wire feeding unit 11 performs the supply operation and the rotation detection mechanism 30 detects a non-rotating state where the reel 200 does not rotate, the control unit 50 instructs the collator 2 that conveys the stack of sheets B to the saddle stitch folding device 100 to stop the conveyance of the stack of sheets B to the saddle stitch folding device 100, there can be other modified examples. For example, the control unit 50 can also control in such a way that when the wire feeding unit 11 performs the supply operation and the rotation detection mechanism 30 detects a rotating state where the reel 200 rotates, the stapler unit 12 is set to an operation state where the binding operation is performed, and when the rotation detection mechanism 30 detects a non-rotating state where the reel 200 does not rotate, the stapler unit is set to a stop state where the binding operation is not performed.

[0084] Figure 8 FIG. represents a flowchart of a modified example of the control method of the saddle stitch folding device 100. Since Figure 8 the steps S201 to S206 and steps S208 to S209 shown are the same as Figure 7 the steps S101 to S106 and steps S108 to S109 shown, the description in the following text is omitted. Figure 8 The modified example shown is different in that there is no process corresponding to Figure 7 steps S107 and S110 shown, and a process of step S207 is added.

[0085] In step S207, for the stapler control unit 51, since the reel 200 is in a non-rotating state, the wire feeding unit 11 is controlled to stop the feeding operation of unwinding the wire W from the reel 200 and supplying it to the stapler unit 12.

[0086] In Figure 8 In the illustrated modification, the stapler control unit 51 performs control in such a manner that when the wire feeding unit 11 executes the feeding operation, if the rotation detection mechanism 30 detects a rotating state in which the reel 200 rotates, the stapler unit 12 is set to an operating state for performing the stapling operation, and if the rotation detection mechanism 30 detects a non-rotating state in which the reel 200 does not rotate, the stapler unit 12 is set to a stopped state in which the stapling operation is not performed.

[0087] In addition, although in the above description, it is assumed that when the control unit 50 is in a non-rotating state in which the reel 200 does not rotate even when the wire feeding unit 11 performs the feeding operation, the situation where there is no remaining amount of the wire W is notified to the operator via the operation panel 70, the following operation can be further performed. For example, it can be set that the control unit 50 displays the degree of the remaining amount of the wire W on the operation panel 70 based on the output signal transmitted from the rotation detection unit 33.

[0088] As Figure 3 And Figure 4 As shown, when the remaining amount of the wire W wound around the reel 200 is large, the wire W is unwound from a position farther from the axis A, and when the remaining amount of the wire W wound around the reel 200 is small, the wire W is unwound from a position closer to the axis A. Therefore, when the remaining amount of the wire W wound around the reel 200 is large, the rotation detection mechanism 30 detects the opening hole 32b at a lower frequency, and when the remaining amount of the wire W wound around the reel 200 is small, the rotation detection mechanism 30 detects the opening hole 32b at a higher frequency.

[0089] Therefore, the control unit 50 can store in advance the relationship between the frequency at which the rotation detection mechanism 30 detects the opening hole 32b and the remaining amount of the wire W as a table, and identify the degree of the remaining amount of the wire W with reference to the table based on the frequency at which the rotation detection mechanism 30 detects the opening hole 32b and display it on the operation panel 70.

[0090] The functions and effects achieved by the saddle-stitch folding device 100 of the present embodiment described above will be described.

[0091] In the saddle-stitching folding device 100 according to the present embodiment, when the wire feeding unit 11 performs the feeding operation, the wire W is unwound from the reel 200, and the reel 200 rotates around the support shaft 21 of the reel support portion 20. The rotation of the reel 200 is transmitted to the rotating member 32 via the adsorbing member 31 that rotates while being adsorbed on the lower surface 202 of the reel 200. By detecting the rotation state of the rotating member 32 by the rotation detection unit 33, even when reels 200 of various shapes are used, the rotation state of the reel 200 can be appropriately detected and the remaining amount of the wire W wound around the reel 200 can be identified.

[0092] In the saddle-stitching folding device 100 according to the present embodiment, in a non-rotating state where the reel 200 does not rotate, by instructing the collator 2 to stop the conveyance of the paper stack B to the saddle-stitching folding device 100, it is possible to appropriately prevent the situation where the paper stack B is conveyed to the saddle-stitching folding device 100 without the wire W being wound around the reel 200.

[0093] In the saddle-stitching folding device 100 according to the present embodiment, even when it is erroneously detected that the opening hole 32b has not passed through the predetermined position for one supply operation, it is possible to only perform this erroneous detection without stopping the conveyance of the paper stack B from the collator 2 to the saddle-stitching folding device 100.

[0094] In the saddle-stitching folding device 100 according to the present embodiment, by the rotation detection mechanism 30, it is detected whether it is in a rotating state where the reel 200 rotates or a non-rotating state where the reel 200 does not rotate, so that the stapler unit 12 can be appropriately controlled to an operating state or a stopped state.

[0095] In the saddle-stitching folding device 100 according to the present embodiment, even when it is erroneously detected that the opening hole 32b has not passed through the predetermined position for one supply operation, it is possible to only perform this erroneous detection without the stapler unit 12 becoming a stopped state.

[0096] In the saddle-stitching folding device 100 according to the present embodiment, by the rotation detection unit 33 detecting the state where the plurality of opening holes 32b arranged on the rotating member 32 pass through the predetermined position, the rotation state of the reel 200 can be identified.

[0097] Reference Signs

[0098] 2, Collator;

[0099] 2A, Control Unit;

[0100] 2Aa, Conveyance Control Unit;

[0101] 3, Paper Cutter;

[0102] 10. Stapler mechanism;

[0103] 11. Wire feeding section;

[0104] 11a. Feeding roller;

[0105] 11b. Roller drive section;

[0106] 12. Stapler section;

[0107] [[ID=1�]]12a. Wire retainer;

[0108] 12b. Cutter;

[0109] 12c. Nailing section;

[0110] 20. Reel support section;

[0111] [[ID=⑳]]21. Support shaft;

[0112] 22. Fixing section;

[0113] 30. Rotation detection mechanism;

[0114] 31. Adsorption component;

[0115] 32. Rotating component;

[0116] 32a. Insertion hole;

[0117] 32b. Opening hole;

[0118] 33. Rotation detection section;

[0119] 40. Folding mechanism;

[0120] 50. Control section;

[0121] 51. Stapler control section;

[0122] 52. Folding mechanism control section;

[0123] 53. Conveying control section;

[0124] 60. Guide;

[0125] 70. Operation panel;

[0126] 100. Saddle stitch folding device (sheet stack binding device);

[0127] 200. Reel;

[0128] 201. Through hole;

[0129] 202. Lower surface;

[0130] 203. Concave part;

[0131] A. Axis;

[0132] B. Stack of papers;

[0133] CD. Circumferential direction;

[0134] TD. Conveying direction;

[0135] VD. Vertical direction;

[0136] W. Wire.

Claims

1. A paper stack binding device, comprising: A stapler unit that performs a binding operation of binding a paper stack with a wire at a predetermined binding position; A reel support unit that supports a reel wound with the wire in a state where a support shaft extending along an axis is inserted into a through hole formed in the reel, so that the reel can rotate around the axis; A rotation detection mechanism that detects the rotation state of the reel; A wire feeding unit that performs a feeding operation of unwinding the wire from the reel and supplying it to the stapler unit, The rotation detection mechanism includes: An adsorption member that rotates around the axis together with the reel in a state of being adsorbed on the lower surface of the reel; A rotating member that is connected to the adsorption member so as to rotate around the axis together with the adsorption member and has an insertion hole for inserting the support shaft; A rotation detection unit that detects the rotation state of the rotating member.

2. The paper stack binding device according to claim 1, wherein, A control unit is provided, and the control unit controls the paper stack binding device, When the wire feeding unit performs the feeding operation, if the rotation detection mechanism detects a non-rotation state in which the reel does not rotate, the control unit instructs an upstream device that conveys the paper stack to the paper stack binding device to stop conveying the paper stack to the paper stack binding device.

3. The paper stack binding device according to claim 2, wherein, The rotating member has a plurality of opening holes arranged at intervals along the circumferential direction centered on the insertion hole, The rotation detection unit is provided at a predetermined position through which the opening hole passes when the rotating member rotates around the axis, and detects the state of the opening hole passing through the predetermined position.

4. The paper stack binding device according to claim 3, wherein, When the rotation detection unit detects a state in which the opening hole does not pass through the predetermined position for the predetermined number of times of the feeding operation more than twice, the control unit instructs the upstream device to stop conveying the paper stack to the paper stack binding device.

5. The paper stack binding device according to any one of claims 2 to 4, wherein, The upstream device is a collator, and the collator has a plurality of paper supply trays and a paper supply unit that supplies paper from each paper supply tray, and conveys the paper stack obtained by collating the paper supplied from the plurality of paper supply trays to the paper stack binding device, The control unit instructs the collator to stop the paper supply performed by the paper supply unit.

6. The paper stack binding device according to claim 1, wherein, A control unit is provided, and the control unit controls the paper stack binding device, The control unit controls in such a manner that when the wire feeding unit performs the feeding operation, if the rotation detection mechanism detects a rotational state in which the reel rotates, the stapling unit is set to an operating state in which the stapling operation is performed, and if the rotation detection mechanism detects a non-rotational state in which the reel does not rotate, the stapling unit is set to a stopped state in which the stapling operation is not performed.

7. The paper stack stapling device according to claim 6, wherein the rotating member has a plurality of opening holes arranged at intervals along the circumferential direction centered on the insertion hole, the rotation detection unit is provided at a predetermined position through which the opening hole passes when the rotating member rotates around the axis, and detects a state in which the opening hole passes through the predetermined position.

8. The paper stack stapling device according to claim 7, wherein the control unit controls in such a manner that when the rotation detection unit detects a state in which the opening hole does not pass through the predetermined position for the supply operation a predetermined number of times or more, the stapling unit is set to the stopped state.

9. A rotation detection method for detecting the rotation of a reel used in a paper stack stapling device, in which the paper stack stapling device includes: a stapling unit that performs a stapling operation of stapling a paper stack with a wire at a predetermined stapling position; a reel support unit that supports a support shaft extending along the axis in a state of being inserted into a through hole formed in the reel around which the wire is wound, so that the reel can rotate around the axis; a rotation detection mechanism that detects the rotation state of the reel; a wire feeding unit that performs a feeding operation of unwinding the wire from the reel and supplying it to the stapling unit, the rotation detection mechanism includes: an adsorption member that rotates around the axis together with the reel in a state of being adsorbed on the lower surface of the reel; a rotating member that is connected to rotate around the axis together with the adsorption member and has an insertion hole into which the support shaft is inserted, the rotation detection method includes a rotation detection process for detecting the rotation state of the rotating member.

10. The rotation detection method according to claim 9, wherein an instruction process is provided. When the wire feeding unit performs the feeding operation and the rotation detection process detects a non-rotational state in which the reel does not rotate, the instruction process instructs an upstream device that conveys the paper stack to the paper stack stapling device to stop conveying the paper stack to the paper stack stapling device.

11. The rotation detection method according to claim 9, wherein There is a control process, and the control process is controlled in such a way that when the supply action is performed in the wire feeding section, if the rotation detection process detects a rotating state in which the reel rotates, the stapler section is set to an action state in which the stapling action is performed, and if the rotation detection process detects a non-rotating state in which the reel does not rotate, the stapler section is set to a stop state in which the stapling action is not performed.

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