JP5025284B2 - Bookbinding equipment - Google Patents

Description

  The present invention relates to a bookbinding apparatus, and relates to a technique for applying a hot-melted solid adhesive to one side edge of a sheet bundle and wrapping a cover sheet onto the sheet bundle.

Examples of this type of bookbinding apparatus include those described below.
(overall structure)
14 to 16, the bookbinding apparatus 1 includes an application unit 3 that forms an adhesive application unit, a deodorizing unit 4, and a crimping unit 5 that forms a cover crimping unit inside a main body casing 2. A clamp part 7 that forms a clamping means for clamping the sheet bundle 6 and a hopper 10 of an adhesive supply unit 9 are arranged on the upper part, and a granular hot melt adhesive made of a thermoplastic resin is stored in the hopper 10.

  An operation knob 11 of the clamp unit 7, a cover table 13 on which a cover 12 (see FIGS. 22 to 23) of the sheet bundle 6 is arranged, and an operation unit 14 for bookbinding operation are arranged on the front of the main casing 2. The main switch 15 is arranged in the section. A front door 16 is swingably opened and closed below the front portion, and a shooter 17 (see FIGS. 22 to 23) for discharging the bound sheet bundle 6 is provided inside the front door 16.

The operation unit 14 includes a liquid crystal display unit 18 for displaying various types of information, a start button 19 for instructing the start of a bookbinding operation, a stop / power-off button 20 for instructing the end of a bookbinding operation, and a sheet binding and case binding. And selection buttons 21 and 22 for instructing selection, and a setting button 23 for instructing which one of the top binding and case binding is to be set as the initial setting.
(Clamp part)
As shown in FIGS. 17-19, the clamp part 7 is supported and arrange | positioned by a pair of front and back parallel front frame 24 and the rear frame 25, and one part protrudes outside from the upper opening 26 of the main body casing 2. As shown in FIG. A fixed clamp 27 and a movable clamp 28 are provided, and a sheet bundle holding member 29 is detachably provided on each of the fixed clamp 27 and the movable clamp 28.

  The operation mechanism for sandwiching and releasing the movable clamp 28 includes guide shafts 30 that hold the movable clamp 28 so that the movable clamp 28 can be moved toward and away from the fixed clamp 27 at both side positions of the movable clamp 28, and both ends of the guide shaft 30 are arranged at the front and rear frames. 24 and 25 are fixed. Screw shafts 31 are arranged on the side portions of the guide shafts 30, and both ends of the screw shafts 31 are rotatably held around the axial centers of the front and rear frames 24, 25. A holding portion 32 that moves in the axial direction of the screw shaft 31 is fixed to the movable clamp 28.

A synchronous belt 33 is stretched between both screw shafts 31, and a transmission belt 35 is stretched between the shaft 34 of the operation knob 11 and one screw shaft 31. The operation mechanism is a sheet bundle thickness sensor 36 that detects the sheet bundle thickness based on the relative position (distance) between the fixed clamp 27 and the movable clamp 28 with the sheet bundle 6 sandwiched between the fixed clamp 27 and the movable clamp 28 (details). (Refer to FIG. 21).
(Coating unit)
As shown in FIG. 19, in the coating unit 3, a running roller 38 provided on the front side of the main body casing 2 runs on the rail 39 of the front frame 24, and a guide portion 40 provided on the rear side of the main body casing 2 is provided on the rear frame 25. By sliding the provided rail shaft 41, the center of the front and rear frames 24, 25 is guided while being guided to the rail 39 and the rail shaft 41 by a coating unit driving device 42 (see FIG. 21) with a driving device such as a motor. It is driven back and forth in the direction. The application unit 3 is located outside the side end of the clamp portion 7 at the standby position, and corresponds to the adhesive supply unit 9 at the maximum movement position. The adhesive supply unit 9 discharges a predetermined amount of the granular adhesive stored in the hopper 10 to the coating unit 3.

The application unit 3 supports an adhesive reservoir 43 that stores hot melt adhesive supplied from the adhesive supply unit 9, an application roller 44 that is disposed so as to be partially immersed in the molten adhesive, and the application roller 44. A rotation shaft 45, a coating roller rotation motor 46 that drives the rotation shaft 45, and an electromagnetic induction coil 48 as a heating unit attached to the fixed member 47 are provided. In the adhesive reservoir 43, the container body 49 is made of aluminum which is a non-ferromagnetic material having excellent thermal conductivity, and a heating plate 50 made of a ferromagnetic material is provided on the bottom surface. The front frame 24 or the rear frame 25 is provided with an adhesive reservoir position sensor 51 (see FIG. 21 for details) that detects each stop position of the adhesive reservoir 43.
(Crimp unit)
As shown in FIG. 16 and FIG. 20, the crimping unit 5 includes a base 53 that moves up and down and back and forth by a crimping unit driving device 52 (see FIG. 21) with a driving device such as a motor, and a fixed portion that is fixed to the base 53. A plate 54, a presser portion 55 fixedly disposed on the fixed plate 54, a movable plate 56 that approaches and moves away from the presser portion 55 on the fixed plate 54, and a drive device such as a motor that drives the movable plate 56. 23, and a movable plate driving device 57 (see FIG. 21), which forms a cover pressure bonding drive means, and a pressure bonding force control device 58 interposed between them. As shown in FIG. The shooter 59 moves integrally. A crimp unit position sensor 60 (see FIG. 21 for detailed description) that detects each stop position of the crimp unit 5 is provided inside the main casing 2.

The crimping force control device 58 is fixedly attached to one end of the movable plate 56, a connecting shaft 62 that supports one end by the fixed block 61, and a connecting shaft 62 that is movably mounted in the axial direction. A movable block 63 that approaches and separates from each other, and a spring 64 that is interposed between the fixed block 61 and the movable block 63 and is attached to the connecting shaft 62 and biases them in the direction of separating them. The deodorizing unit 4 sucks the volatile adhesive from the adhesive reservoir 43 and the application roller 44 of the application unit 3 and adsorbs them with a filter.
(Control part)
As shown in FIG. 21, the bookbinding apparatus 1 includes a control unit 65 that controls the bookbinding operation and a temperature sensor 66 that serves as a temperature detection unit that measures the atmospheric temperature or the room temperature inside the apparatus. The control unit 65 includes a sheet bundle thickness sensor 36, an adhesive reservoir position sensor 51, a pressure bonding unit position sensor 60, a temperature sensor 66, an operation unit 14, a coating unit driving device 42, a pressure bonding unit driving device 52, and a movable plate driving device 57. The clamp driving device 37 is connected.

  The control unit 65 is operated when an elapsed time measuring means for measuring the elapsed time after the application of the adhesive to the sheet bundle 6 is completed, and when the elapsed time measured by the timer 67 has reached the required clamping time. A signal output circuit 68 is provided as signal output means for outputting a signal for instructing the liquid crystal display unit 18 of the unit 14 to display “please take out”. The liquid crystal display unit 18 serves as a notifying means for notifying information based on the necessary holding time, and various display contents can be set. After the countdown time is displayed, “please take out” is displayed. It is also possible to do. Further, the notification means is not limited to the liquid crystal display unit 18 and can be configured by a buzzer.

  When the movable clamp 28 is driven by the clamp driving device 37 instead of the driving by the operation knob 11, the signal output circuit 68 outputs a signal instructing the clamp driving device 37 to open the sheet bundle 6.

  The time required for clamping and the time required for crimping vary depending on the type of adhesive, the thickness of the sheet bundle 6, the amount of adhesive applied, and the temperature of the usage environment. For this reason, the control unit 65 that constitutes the clamping time control means and the crimping time control means uses the thickness of the sheet bundle 6, the amount of adhesive applied, and the temperature of the usage environment as indices based on the data for each used adhesive inputted in advance. Select and set the time required for clamping and the time required for crimping.

  For example, it is longer as the thickness of the sheet bundle 6 is larger, longer as the application amount of the adhesive is larger, and longer as the temperature of the use environment is higher. The data necessary for selecting and setting the necessary clamping time and the required crimping time is obtained by experimentally obtaining the correlation between the thickness of the sheet bundle 6, the amount of adhesive applied, the temperature of the usage environment, and the necessary clamping time. Is stored in the control unit 65.

The selection and setting of the required clamping time and the required crimping time using the temperature as an index is either fixedly set with the temperature detected by the temperature sensor 66 at the initial installation of the bookbinding apparatus 1 as an index, or the temperature detected by the temperature sensor 66 every time bookbinding is performed. Is used as an index to select and set the required clamping time and the required crimping time.
JP 2004-351726 A JP 2004-209753 A

The operation and problems in the bookbinding apparatus will be described below.
(Standby process)
In the standby process, as shown in FIG. 22A, the coating unit 3 is in the standby position in the initial state, and the adhesive reservoir 43 corresponds to the electromagnetic induction coil 48. Next, the bookbinding mode that is set to either the top binding or the case binding as a default value is switched to a desired bookbinding mode by turning on one of the selection buttons 21 and 22. The default value of the bookbinding mode is switched by operating the setting button 23.

In this state, when receiving an ON operation of the main switch 15, the controller 65 energizes the electromagnetic induction coil 48 of the coating unit 3 prior to the bookbinding operation, causes the heating plate 50 to generate heat, and stores the adhesive in the adhesive reservoir 43. Is heated and melted, and the application roller 44 is rotated by the application roller rotation motor 46 to enter a standby state.
(Alignment process)
Next, as shown in FIG. 22B, when the start button 19 is turned on, the control unit 65 drives the crimping unit driving device 52 to place the crimping unit 5 at a predetermined upper position below the clamp unit 7. The fixed plate 54 of the crimping unit 5 is disposed with a predetermined gap between the fixed clamp 27 of the clamp portion 7 and the lower end of the movable clamp 28.

In this state, the sheet bundle 6 is inserted between both sheet bundle holding members 29 and between the fixed clamp 27 and the movable clamp 28, and one side of the sheet bundle 6 is aligned with the fixed plate 54.
(Clamping process)
Next, the operation knob 11 is rotated, the rotational force of the shaft 34 is transmitted to the screw shaft 31 via the transmission belt 35, both screw shafts 31 are driven synchronously via the synchronization belt 33, and the screw shaft 31 is screwed. The holding part 32 to be joined is moved. As the holding unit 32 moves, the movable clamp 28 approaches the fixed clamp 27, and the sheet bundle 6 is sandwiched between the movable clamp 28 and the fixed clamp 27.
(Gluing process)
Next, as shown in FIG. 22 (c), when the start button 19 is turned on again after the holding of the sheet bundle 6 is completed, the control unit 65 drives the crimping unit driving device 52 to drive the crimping unit. 5 is lowered to a lower predetermined position.

  When performing case binding, the control unit 65 places the cover 12 on the cover table 13 and waits until the start button 19 is turned on again. The gluing operation is started without receiving the ON operation of the start button 19 again.

  In this gluing operation, the control unit 65 drives the coating unit driving device 42 to reciprocate the coating unit 3 along the rail 39 and the rail shaft 41, and rotates the coating roller 44 to remove the adhesive in the adhesive reservoir 43. It is applied to the back of the sheet bundle 6 both in the forward path and in the return path.

At this time, the application amount of the adhesive is changed according to the sheet bundle thickness detected by the sheet bundle thickness sensor 36. When the sheet bundle thickness is thick, the application amount is increased by rotating the application roller 44 fast, and when the sheet bundle thickness is thin, the application roller 44 is rotated slowly to decrease the application amount.
(Top glue binding process)
In the case of performing the book binding, the control unit 65 completes the application of the adhesive to the sheet bundle 6 by the timer circuit 67 with the application unit 3 returned to the standby position as shown in FIG. Measure the elapsed time after At this time, as shown in FIG. 23C, the crimping unit 5 is retracted integrally with the cover sheet base 13 and the movable shooter 59 until the movable shooter 59 corresponds to the shooter 17.

The control unit 65 uses the temperature measured by the temperature sensor 66 as the temperature condition of the usage environment, and selects and sets the necessary holding time from the data stored in advance. When the detected temperature is higher than the reference temperature, the reference holding at the reference temperature is necessary. The required holding time is set longer than the time, and when the detected temperature is lower than the reference temperature, the required holding time is set shorter than the reference holding required time at the reference temperature. Further, the necessary holding time is set longer as the thickness of the sheet bundle 6 is larger, and is set longer as the amount of adhesive applied is larger.
(Discharge process)
When the elapsed time reaches the necessary holding time, the control unit 65 outputs a signal instructing display of a wording notification of bookbinding completion such as “please take out” from the signal output circuit 68 to the liquid crystal display unit 18 of the operation unit 14. . After confirming the bookbinding completion word displayed on the liquid crystal display unit 18, the operator operates the operation knob 11 to separate the movable clamp 28 from the fixed clamp 27.

By this operation, as shown in FIG. 23C, the sheet bundle 6 with the bound cover sheet 12 falls from the clamp portion 7 and is discharged through the movable shooter 59 and the shooter 17. When the clamp driving device 37 is provided, the clamp driving device 37 receives the signal from the signal output circuit 68 and moves the movable clamp 28 to open the clamp portion 7 to discharge the bookbinding.
(Case binding process)
When performing case binding, when the coating unit 3 returns to the standby position as shown in FIG. 22D, the controller 65 drives the crimping unit driving device 52 as shown in FIG. Then, the pressure bonding unit 5 is raised to a predetermined upper position, and the cover 12 placed on the cover base 13 is pressed against the back of the sheet bundle 6 by the fixing plate 54.

  Next, as shown in FIGS. 22 (f), 20 (a), and 20 (b), the control unit 65 drives the movable plate driving device 57 to press the movable plate 56 toward the presser unit 55. Then, the cover sheet 12 and the sheet bundle 6 are pressure-bonded between the movable plate 56 and the pressing portion 55, and bookbinding is performed as shown in FIG.

  At this time, the pressing force of the crimping unit driving device 52 is transmitted from the movable block 63 to the fixed block 61 via the spring 64, and the pressing force of the movable plate 56 becomes equal regardless of the thickness of the sheet bundle 6.

  As shown in FIG. 23A, the control unit 65 presses the cover sheet 12 against the back of the sheet bundle 6 with the fixed plate 54, and presses the cover sheet 12 and the sheet bundle 6 between the movable plate 56 and the pressing unit 55. The state is continued, and the elapsed time after the application of the adhesive to the sheet bundle 6 is completed by the timer circuit 67 is measured.

  The controller 65 uses the temperature measured by the temperature sensor 66 as the temperature condition of the usage environment, and selects and sets the time required for crimping to maintain the crimping state of the cover 12 after the application of the adhesive is completed from the data stored in advance. . This time required for crimping is the time required for crimping the cover 12 in case binding, but it is set as the time including the time required for clamping. When the detected temperature is higher than the reference temperature, the time required for crimping is longer than the time required for standard crimping at the reference temperature. The time is set to be long, and when the detected temperature is lower than the reference temperature, the time required for pressure bonding is set shorter than the time required for pressure bonding at the reference temperature. Further, the time required for pressure bonding is set longer as the thickness of the sheet bundle 6 is larger, and is set longer as the amount of adhesive applied is larger.

When the elapsed time reaches the time required for crimping, the controller 65 drives the movable plate driving device 57 to retract the movable plate 56 to release the crimped state as shown in FIG. The apparatus 52 is driven to lower the crimping unit 5 to a predetermined lower position integrally with the cover table 13 and the movable shooter 59. Subsequently, as shown in FIG. The movable shooter 59 is moved backward to a predetermined position integrally with the movable shooter 59 so that the movable shooter 59 corresponds to the shooter 17.
(Discharge process)
Next, the control unit 65 outputs from the signal output circuit 68 a signal for instructing the display of the wording indicating completion of bookbinding such as “please take out” to the liquid crystal display unit 18 of the operation unit 14.
After confirming the bookbinding completion word displayed on the liquid crystal display unit 18, the operator operates the operation knob 11 to separate the movable clamp 28 from the fixed clamp 27.

By this operation, as shown in FIG. 23D, the sheet bundle 6 with the bound cover sheet 12 falls from the clamp portion 7 and is discharged through the movable shooter 59 and the shooter 17. When the clamp driving device 37 is provided, the clamp driving device 37 receives the signal from the signal output circuit 68 and moves the movable clamp 28 to open the clamp portion 7 to discharge the bookbinding.
(Challenges for the case binding process)
In case binding, as shown in FIG. 22E and FIG. 20A and FIG. 20B, the movable plate driving device 57 is driven to push the movable plate 56 toward the presser 55. Then, the cover sheet 12 and the sheet bundle 6 are pressure-bonded between the movable plate 56 and the presser portion 55 for bookbinding.

  At this time, it is desirable that the adhesive applied to the back of the sheet bundle 6 spreads between the sheet bundle 6 and the cover sheet 12 at the throat portion of the sheet bundle 6, that is, at a portion facing the movable plate 56 and the pressing portion 55. .

  However, the cover 12 is lifted by the presser 55 as the pressurizing unit 5 is lifted and bent along the corners of the paper bundle 6, so that when the pressurizing unit 5 is lifted, the space between the presser 55 and the paper bundle 6 is substantially reduced. In the state where there is no gap, the spread of the adhesive is hindered.

Further, when the press-bonding unit 5 is raised, there is substantially no gap between the presser portion 55 and the sheet bundle 6, and there is a possibility that the alignment property of the sheet bundle 6 is impaired or damaged.
(Clamp process issues)
At the time of clamping, the sheet bundle 6 is sandwiched between the movable clamp 28 and the fixed clamp 27, but the holding portion 32 screwed to the screw shaft 31 presses both ends of the movable clamp 28. In some cases, a sufficient pressing force does not act on the central portion of the paper sheet and the alignment of the sheet bundle 6 is disturbed.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a bookbinding apparatus capable of smoothly extending an adhesive applied to the back of a sheet bundle to a throat portion of the sheet bundle.

In order to solve the above-described problems, a bookbinding apparatus according to the present invention includes a sandwiching unit that sandwiches a sheet bundle, an adhesive application unit that applies a heat-melted adhesive to the back of the sheet bundle sandwiched by the sandwiching unit, and a sandwiching device. A crimping unit that crimps the cover onto the sheet bundle sandwiched by the means, and a control means for controlling the crimping unit. The crimping unit moves up and down, back and forth, a fixed plate fixed to the base, and fixed to the fixed plate. It has an arranged presser part, a movable plate that approaches and moves away from the presser part on the fixed plate, and a movable plate drive device that drives the movable plate , and applies adhesive in the crimping operation of the crimping unit by the control means. When the fixed plate is placed opposite to the back of the sheet bundle, the holding part and the movable plate are placed at the set position where they do not come into contact with the sheet bundle, and the fixed plate is pressed against the back of the sheet bundle through the cover. The presser part and movable plate From the set position opposed through the cover, after it is moved toward the pressing portion of the movable plate to move before the start of the pressing portion by the movable plate driving device, it is brought closer to each other of the sheet bundle between the pressing portion and the movable plate The cover is crimped to the throats on both sides.

Further, the fixed plate forms a sliding guide for the movable plate.
Further, the fixed plate and the movable plate are engaged with each other so as to be movable in the sliding guide direction at the uneven portions formed on both sliding surfaces.

  In addition, a sheet bundle thickness detecting unit that detects the thickness of the sheet bundle sandwiched by the sandwiching unit is provided, and when the pressing unit and the movable plate are moved closer to each other from the set position in the crimping operation of the crimping unit by the control unit, the sheet Depending on the thickness of the sheet bundle detected by the bundle thickness detection means, the operating time of the holding part and movable plate is changed and adjusted, and the holding part and the movable plate substantially simultaneously press the cover onto the throats on both sides of the sheet bundle. It is characterized by.

  Further, in the crimping operation of the crimping unit by the control means, when the fixing plate is disposed opposite to the back of the sheet bundle coated with the adhesive, the sheet bundle according to the thickness of the sheet bundle detected by the sheet bundle thickness detecting means. The position of the fixing plate with respect to the back of the head is changed and adjusted.

  As described above, according to the present invention, in the crimping operation, the holding portion and the movable plate at the set position are separated from the throat portions on both sides of the sheet bundle, and the cover is the throat portion on both sides of the sheet bundle. Therefore, when the fixing plate is disposed opposite to the back of the sheet bundle to which the adhesive is applied, the adhesive on the back is pressed against the fixing plate via the cover and spreads on the cover. Next, the presser and the movable plate that are close to each other from the set position press the cover onto the throats on both sides of the paper bundle, so that the adhesive spread on the cover is pushed to the throat of the paper bundle and the cover is Adhered securely to the surface.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. The bookbinding apparatus according to the present embodiment has the same basic configuration as previously described with reference to FIGS. 14 to 23, and the same components are denoted by the same reference numerals by referring to FIGS. 14 to 23. The detailed description is omitted.
(overall structure)
In FIG. 1, the bookbinding apparatus 1 includes an application unit 3 (see FIG. 6) that forms an adhesive application unit, a crimping unit 5 that forms a cover crimping unit, and a shooter 17 inside a body casing 2. A clamp portion 7 serving as a clamping means for clamping the sheet bundle 6 is disposed on the top of the sheet. An operation knob 11 (see FIG. 14) of the clamp unit 7 and a cover board 13 on which a cover sheet 12 (see FIGS. 11 to 13) of the sheet bundle 6 is arranged are arranged at the front part of the main casing 2.
(Clamp part)
As shown in FIG. 4, the clamp portion 7 is arranged to be supported by a pair of front and rear parallel front frames 24 and a rear frame 25, and a fixed clamp 27 partially protruding from the upper opening 26 of the main body casing 2. And a movable clamp 28, and a sheet bundle holding member 29 is detachably provided on each of the fixed clamp 27 and the movable clamp 28. A detailed description of the operation mechanism for holding and releasing the movable clamp 28 will be omitted with reference to FIG.

In the present embodiment, the fixed clamp 27 and the movable clamp 28 are curved toward each other, and the amount of warpage is set so that the distance between the fixed clamp 27 and the movable clamp 28 is the narrowest at the center position P of both. Has been. The operation mechanism is a sheet bundle thickness sensor 36 that detects the sheet bundle thickness based on the relative position (distance) between the fixed clamp 27 and the movable clamp 28 with the sheet bundle 6 sandwiched between the fixed clamp 27 and the movable clamp 28 (details). (Refer to FIG. 21).
(Coating unit)
As shown in FIG. 6, the coating unit 3 includes an adhesive reservoir 43 that stores hot melt adhesive, and an application roller 44 that is disposed so as to be partially immersed in the molten adhesive. Detailed description of the configuration will be omitted by referring to FIG.
(Crimp unit)
As shown in FIG. 1, the crimping unit 5 includes a base 53 that moves up and down and back and forth by a crimping unit driving device 52 having a driving device such as a motor, a fixed plate 54 fixed to the base 53, and a fixed arrangement on the fixed plate 54. The presser part 55, the movable plate 56 approaching and separating from the presser part 55 on the fixed plate 54, the movable plate driving device 57 of a ball screw mechanism for driving the movable plate 56, the movable plate 56 and the movable plate driving device. 57 has a pressure-bonding force control device 58 (see FIG. 20) interposed therebetween, and the cover board 13 and the movable shooter 59 move integrally. A crimp unit position sensor 60 (see FIG. 21 for detailed description) that detects each stop position of the crimp unit 5 is provided inside the main casing 2. Detailed description of the pressure-bonding force control device 58 will be omitted by referring to FIG.

  As shown in FIG. 2, the fixed plate 54 serves as a sliding guide for the movable plate 56, and the opposing surfaces of both the fixed plate 54 and the movable plate 56 form sliding surfaces 54 a and 56 a, which are provided on the movable plate 56. When the guide roller 56b comes into contact with the back surface of the fixed plate 54, the movable plate 56 slides in close contact with the sliding surface 54a of the fixed plate 54. A surface treatment having a poor affinity with the adhesive, for example, coating with tetrafluoroethylene resin, is performed on the presser 55, the fixed plate 54, and the movable plate 56 that are in contact with the bookbinding product.

  As described above, since there is no gap between the fixed plate 54 and the movable plate 56, the cover of the sheet bundle 6 and the cover to be pressed against the sheet bundle 6 in case binding in the operation described later, particularly the thin cover, are fixed plate 54. And the movable plate 56 does not enter.

  Further, as shown in FIG. 3, a plurality of groove-shaped concave portions 54 b are formed on the sliding surface 54 a of the fixed plate 54, and a plurality of convex portions 56 c are formed on the sliding surface 56 a of the movable plate 56, It is also possible to adopt a configuration in which the concave portion 54b and the convex portion 56c are movably engaged in the sliding guide direction.

According to this configuration, the convex portion 56 c of the movable plate 56 enters below the sliding surface 54 a of the fixed plate 54, so that the sheets of the sheet bundle 6 placed on the sliding surface 54 a of the fixed plate 54 are fixed. Intrusion between the movable plate 56 and the movable plate 56 can be reliably prevented by the convex portion 56 c of the movable plate 56.
(Control part)
As shown in FIG. 21, the bookbinding apparatus 1 includes a control unit 65 that controls the bookbinding operation and a temperature sensor 66 that serves as a temperature detection unit that measures the atmospheric temperature or the room temperature inside the apparatus. The control unit 65 includes a sheet bundle thickness sensor 36, an adhesive reservoir position sensor 51, a pressure bonding unit position sensor 60, a temperature sensor 66, an operation unit 14, a coating unit driving device 42, a pressure bonding unit driving device 52, and a movable plate driving device 57. The clamp driving device 37 is connected.

  The control unit 65 is operated when an elapsed time measuring means for measuring the elapsed time after the application of the adhesive to the sheet bundle 6 is completed, and when the elapsed time measured by the timer 67 has reached the required clamping time. A signal output circuit 68 is provided as signal output means for outputting a signal for instructing the liquid crystal display unit 18 of the unit 14 to display “please take out”.

  When the movable clamp 28 is driven by the clamp driving device 37 instead of the driving by the operation knob 11, the signal output circuit 68 outputs a signal instructing the clamp driving device 37 to open the sheet bundle 6.

The operation of the bookbinding apparatus will be described below.
(Standby process)
In the standby process, as shown in FIG. 1 and FIG. 11A, the coating unit 3 is in the standby position in the initial state, and the adhesive reservoir 43 corresponds to the electromagnetic induction coil 48. Upon receiving the ON operation of the main switch 15, the controller 65 energizes the electromagnetic induction coil 48 of the coating unit 3 prior to the bookbinding operation, heats the heating plate 50 and heats the adhesive stored in the adhesive reservoir 43. Then, the application roller 44 is rotated by the application roller rotation motor 46 to enter a standby state.

Upon receiving the ON operation of the start button 19, the control unit 65 drives the crimping unit driving device 52 to raise the crimping unit 5 to a predetermined position below the clamp unit 7 and clamp the fixing plate 54 of the crimping unit 5. A predetermined gap is provided between the fixed clamp 27 of the part 7 and the lower end of the movable clamp 28, and the presser part 55 of the crimping unit 5 is disposed at a position retracted by about 1 mm from the fixed clamp 27.
(Alignment process)
Next, as shown in FIG. 5 and FIG. 11B, the sheet bundle 6 is inserted between both sheet bundle holding members 29 and between the fixed clamp 27 and the movable clamp 28, and one side of the sheet bundle 6. The sides are aligned with the fixing plate 54.
(Clamping process)
Next, the operation knob 11 is rotated, the rotational force of the shaft 34 is transmitted to the screw shaft 31 via the transmission belt 35, both screw shafts 31 are driven synchronously via the synchronization belt 33, and the screw shaft 31 is screwed. The holding part 32 to be joined is moved. As the holding unit 32 moves, the movable clamp 28 approaches the fixed clamp 27, and the sheet bundle 6 is sandwiched between the movable clamp 28 and the fixed clamp 27.

  At this time, the fixed clamp 27 and the movable clamp 28 are curved to the opposite sides, and the amount of warpage is set so that the distance between the fixed clamp 27 and the movable clamp 28 is the narrowest at the center position P of both. Therefore, when both ends of the movable clamp 28 are pressed by the holding portion 32 that is screwed onto the screw shaft 31, a sufficient pressing force acts on the central portions of the movable clamp 28 and the fixed clamp 27, and the sheet bundle 6 is aligned. Can be held without being disturbed.

The sheet bundle thickness sensor 36 detects the sheet bundle thickness based on the relative position (distance) between the fixed clamp 27 and the movable clamp 28 while the sheet bundle 6 is sandwiched between the fixed clamp 27 and the movable clamp 28.
(Gluing process)
Next, as shown in FIG. 6, when the start button 19 is turned on again after the holding of the sheet bundle 6 is completed, the control unit 65 drives the crimping unit driving device 52 to move the crimping unit 5 to the lower order. Lower to a predetermined position.

At this time, the movable plate 56 is moved to a position where it comes into contact with the presser portion 55. This is to prevent the cover 12 from being caught on the movable plate 56 when the cover 12 is inserted later.
Thereafter, the control unit 65 displays a message for prompting the insertion of the cover 12 on the liquid crystal display unit 18 and stands by.

When the cover 12 is placed on the cover 13 and the start button 19 is turned on again, as shown in FIG. 7 and FIG. In this gluing operation, the control unit 65 drives the coating unit driving device 42 to reciprocate the coating unit 3 along the rail 39 and the rail shaft 41, and rotates the coating roller 44 to remove the adhesive in the adhesive reservoir 43. It is applied to the back of the sheet bundle 6 both in the forward path and in the return path.
(Case binding process)
When the coating unit 3 returns to the standby position as shown in FIG. 11D, the controller 65 drives the crimping unit driving device 52 to raise the crimping unit 5 as shown in FIG. Let At this time, the fixing plate 54 is brought close to the back of the sheet bundle 6 to which the adhesive S has been applied in a state where the presser portion 55 and the movable plate 56 are arranged at the set position where they do not contact the sheet bundle 6.

  Further, as shown in FIG. 8 and FIG. 12B, the control unit 65 drives the crimping unit driving device 52 to raise the crimping unit 5 to a predetermined upper position and apply the adhesive S. The fixing plate 54 is disposed opposite to the back of the paper 6 and the cover 12 placed on the cover board 13 is pressed against the back of the sheet bundle 6 by the fixing plate 54.

  In this operation, the holding portion 55 and the movable plate 56 at the set position are separated from the throat portions on both sides of the sheet bundle 6, and the cover 12 is separated from the throat portions on both sides of the sheet bundle 6. When the fixing plate 54 is placed opposite to the back of the sheet bundle 6 to which the adhesive S is applied, the adhesive S pressed against the fixing plate 54 via the cover 12 is not hindered from spreading. Spread on the cover 12 on both sides of the sheet bundle 6.

  In the above-described operation, the control unit 65 changes and adjusts the position of the fixing plate 54 with respect to the back of the sheet bundle 6 according to the thickness of the sheet bundle 6 detected by the sheet bundle thickness sensor 36 that constitutes the sheet bundle thickness detecting means. The thickness of the sheet bundle 6 is identified by setting a segment range in at least two or more stages. However, if the width of the segment range to be set is made minute, a substantially continuous thickness can be identified. Thus, if the detection value of the sheet bundle thickness sensor 36 is directly used, it is possible to identify a completely continuous thickness.

  For example, a two-stage range is set for the thickness of the sheet bundle 6, and in the initial setting, the ascending position (reference position) of the fixing plate 54 at a predetermined position above the crimping unit 5 is greater than the intermediate value of the thickness of the sheet bundle 6. If the sheet bundle 6 detected by the sheet bundle thickness sensor 36 is identified to be in a divided range smaller than the intermediate value when set to correspond to the divided range, the rising position of the fixed plate 54 is By changing and adjusting the position to be lower than the reference position, the pressing force against the back of the sheet bundle 6 and the adhesive S is weakened, and the sheet bundle 6 is prevented from being bent.

  Next, the control unit 65 causes the presser unit 55 and the movable plate 56 to approach each other from the set position facing each other via the sheet bundle 6 and the cover sheet 12. The approach of the pressing portion 55 is performed by the movement of the crimping unit 5 by the crimping unit driving device 52, and the approach of the movable plate 56 is performed by the movement of the movable plate 56 by the movable plate driving device 57.

  At this time, as shown in FIG. 13A, the control unit 65 drives the movable plate driving device 57 before the movement of the presser unit 55 to move the movable plate 56 toward the presser unit 55, The movable plate 56 is disposed at the crimping start position. Thereafter, as shown in FIG. 9 and FIG. 13B, the presser portion 55 and the movable plate 56 are simultaneously brought close to each other until they are flush with the fixed clamp 27 and the movable clamp 28, and the presser portion 55 and the movable plate 56 are movable. By pressing the cover sheet 12 to the throats on both sides of the sheet bundle 6 with the plate 56, the adhesive S spread on the cover sheet 12 is pushed and spread to the throat of the sheet bundle 6, and the cover sheet 12 is securely adhered to the throat. The

  In the above-described operation, the crimping start position is desirably a position where the distance between the fixed plate 54 and the sheet bundle 6 and the distance between the movable plate 56 and the sheet bundle 6 are equal. Therefore, the control unit 65 changes and adjusts the operation time of the pressing unit 55 and the movable plate 56 in accordance with the thickness of the sheet bundle 6 detected by the sheet bundle thickness sensor 36 serving as a sheet bundle thickness detecting unit.

  In the present embodiment, as described above, the thickness of the sheet bundle 6 is identified by setting the division range in multiple stages of at least two stages. For example, a two-stage segment range is set for the thickness of the sheet bundle 6, and in the initial setting, the crimping start position (reference position) of the movable plate 56 is set so as to correspond to the segment range in which the thickness of the sheet bundle 6 is greater than the intermediate value. In the case where the thickness of the sheet bundle 6 detected by the sheet bundle thickness sensor 36 is identified as being within a section range smaller than the intermediate value, the pressing start position of the movable plate 56 is pressed from the reference position by the pressing portion 55. The distance between the fixed plate 54 and the sheet bundle 6 and the distance between the movable plate 56 and the sheet bundle 6 are made equal to each other.

  In the present embodiment, the thickness of the sheet bundle 6 is identified by setting the division range in multiple stages of at least two or more stages. Therefore, depending on the thickness of the sheet bundle 6, the fixing plate 54 and the sheet are not necessarily located at the crimping start position. The distance between the bundles 6 and the distance between the movable plate 56 and the sheet bundle 6 are not equal. However, if the width of the set division range is made minute, the distance becomes substantially equal, and the sheet bundle thickness sensor 36 detects the distance. If the values are used directly, the distances can be exactly the same.

Next, the control unit 65 continues the state in which the cover sheet 12 and the sheet bundle 6 are pressure-bonded between the movable plate 56 and the pressing unit 55, and after the application of the adhesive to the sheet bundle 6 is completed by the timer circuit 67. The elapsed time is measured, and when the elapsed time reaches the time required for crimping, as shown in FIG. 10, the movable plate driving device 57 is driven to retract the movable plate 56 to release the crimping state, and the crimping unit driving device 52 is driven. Is driven to lower the crimping unit 5 integrally with the cover base 13 and the movable shooter 59 to a predetermined position below, and then the crimping unit 5 is retracted integrally to the cover base 13 and the movable shooter 59 to a predetermined position. The movable shooter 59 is made to correspond to the shooter 17.
(Discharge process)
Next, the control unit 65 outputs from the signal output circuit 68 a signal for instructing the display of the wording indicating completion of bookbinding such as “please take out” to the liquid crystal display unit 18 of the operation unit 14. The discharging operation is the same as that described above with reference to FIG.

Sectional drawing which shows the bookbinding apparatus in embodiment of this invention The perspective view which shows the principal part of the bookbinding apparatus The perspective view which shows the principal part of the bookbinding apparatus The top view which shows the principal part of the clamp part of the bookbinding apparatus Sectional drawing which shows the alignment process of the bookbinding apparatus Sectional drawing which shows the gluing process of the bookbinding apparatus Sectional drawing which shows the gluing process of the bookbinding apparatus Sectional drawing which shows the case binding process of the bookbinding apparatus Sectional drawing which shows the case binding process of the bookbinding apparatus Sectional drawing which shows the case binding process of the bookbinding apparatus It is a schematic diagram explaining bookbinding operation | movement of the bookbinding apparatus. It is a schematic diagram explaining bookbinding operation | movement of the bookbinding apparatus. It is a schematic diagram explaining bookbinding operation | movement of the bookbinding apparatus. It is a perspective view which shows the conventional bookbinding apparatus. It is a front view of the bookbinding apparatus. It is a side view of the bookbinding apparatus. It is a top view which shows the clamp part of the bookbinding apparatus. It is a front view which shows the clamp part of the bookbinding apparatus. It is a side view which shows the application | coating unit of the bookbinding apparatus. It is a side view of the crimping unit of the bookbinding apparatus. It is a block diagram which shows the structure of the bookbinding apparatus. It is a schematic diagram explaining bookbinding operation | movement of the bookbinding apparatus. It is a schematic diagram explaining the operation | movement which discharges | emits bookbinding of the bookbinding apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS S Adhesive 1 Bookbinding apparatus 2 Main body casing 3 Application | coating unit 4 Deodorizing unit 5 Crimp unit 6 Paper bundle 7 Clamp part 8 Hot melt adhesive 9 Adhesive supply unit 10 Hopper 11 Operation knob 12 Cover sheet 13 Cover table 14 Operation part 15 Main switch 16 Front Door 17 Shooter 18 Liquid Crystal Display 19 Start Button 20 Stop / Power Off Button 21, 22 Select Button 23 Setting Button 24 Front Frame 25 Rear Frame 26 Upper Opening 27 Fixed Clamp 28 Movable Clamp 29 Paper Bundle Holding Member 30 Guide Shaft 31 Screw shaft 32 Holding portion 33 Synchronous belt 34 Shaft 35 Transmission belt 36 Paper bundle thickness sensor 37 Clamp drive device 38 Traveling roller 39 Rail 40 Guide portion 41 Rail shaft 42 Coating unit drive device 4 Adhesive reservoir 44 Application roller 45 Rotating shaft 46 Application roller rotation motor 47 Fixed member 48 Electromagnetic induction coil 49 Container body 50 Heating plate 51 Adhesive reservoir position sensor 52 Crimp unit drive unit 53 Base 54 Fixing plate 54a Sliding surface 54b Recessed portion 55 Presser part 56 Movable plate 56a Sliding surface 56b Guide roller 56c Convex part 57 Movable plate drive unit 58 Crimping force control unit 59 Movable shooter 60 Crimp unit position sensor 61 Fixed block 62 Connection shaft 63 Movable block 64 Spring 65 Control unit 66 Temperature sensor 67 Timer circuit 68 Signal output circuit

Claims (5)

A sandwiching means for sandwiching the sheet bundle, an adhesive application means for applying the heat-melted adhesive to the back of the sheet bundle sandwiched by the sandwiching means, a crimping unit for crimping the cover to the sheet bundle sandwiched by the sandwiching means, A control means for controlling the crimping unit is provided. The crimping unit moves up and down, back and forth, a fixed plate fixed to the base, a presser fixed to the fixed plate, and a presser on the fixed plate. When the fixed plate is disposed opposite to the back of the sheet bundle coated with the adhesive in the crimping operation of the crimping unit by the control means, the movable plate is moved closer to and away from the movable plate driving device. In addition, the holding part and the movable plate are arranged at a set position where they do not come into contact with the sheet bundle, and the fixed plate is pressed against the back of the sheet bundle through the cover, and the presser part and the movable plate are interposed through the sheet bundle and the cover. from the set position opposed, the pressing portion Before starting movement by the movable plate driving apparatus after it is moved toward the pressing portion of the movable plate, it is brought closer to each other, characterized in that crimping the cover on both sides of the throat of the sheet bundle between the pressing portion and the movable plate Bookbinding equipment.   The bookbinding apparatus according to claim 1, wherein the fixed plate forms a sliding guide for the movable plate.   The bookbinding apparatus according to claim 2, wherein the fixed plate and the movable plate engage with each other so as to be movable in the sliding guide direction at the concavo-convex portions formed on both sliding surfaces.   A sheet bundle thickness detecting means for detecting the thickness of the sheet bundle sandwiched by the clamping means is provided, and the sheet bundle thickness is determined when the pressing portion and the movable plate are brought close to each other from the set position in the crimping operation of the crimping unit by the control means. According to the thickness of the sheet bundle detected by the detecting means, the operation time of the presser part and the movable plate is changed and adjusted, and the presser part and the movable plate substantially press the cover sheet on both sides of the sheet bundle at the same time. The bookbinding apparatus according to claim 1.   In the crimping operation of the crimping unit by the control unit, when the fixing plate is disposed opposite to the back of the sheet bundle to which the adhesive is applied, the back of the sheet bundle is determined according to the thickness of the sheet bundle detected by the sheet bundle thickness detecting unit. The bookbinding apparatus according to claim 4, wherein the position of the fixing plate relative to the head is changed and adjusted.

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