JP2008265173A - Bookbinding equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide bookbinding equipment which can uniformize the temperature and the viscosity of an adhesive in an adhesive reservoir in a short period of time in a standby step. <P>SOLUTION: In the case where an adhesive applying means is operated by a control means, when the temperature of the adhesive in the adhesive reservoir 43 is increased to a predetermined temperature suitable for application, a warm-up temperature is set in an intermediate temperature region before reaching the application temperature, and at the warm-up temperature, the normal and reverse rotations of an application roller 44 are alternately and repeatedly performed. <P>COPYRIGHT: (C)2009,JPO&INPIT

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, wrapping and binding a cover sheet on the sheet bundle, and a ceiling binding that performs only glue application. .

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 bookbinding operations, and a temperature sensor 66 that serves as a temperature measurement 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 required clamping time and the required crimping time is obtained by experimentally obtaining the correlation between the sheet bundle thickness 6, the amount of adhesive applied, the temperature of the usage environment and the required clamping time in advance. 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 2005-238526 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, and both screw shafts 31 are synchronously driven via the synchronization belt 33, The holding portion 32 to be screwed 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.
(Standby process issues)
In the standby process, when the main switch 15 is turned on, 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 stores the adhesive in the adhesive reservoir 43. The agent is heated and melted, and the application roller 44 is rotated by the application roller rotation motor 46 to enter a standby state.

  However, the viscosity of the adhesive is very high when the temperature has not yet reached the predetermined temperature. When the adhesive roller 44 is continuously rotated in this state to stir the adhesive, the adhesive remains in a lump and the application roller. There is a problem that the adhesive rotates around and rotates around. On the other hand, there is a problem that the standby process takes a long time if the whole of the adhesive in the adhesive reservoir 43 sufficiently reaches the predetermined temperature without performing the stirring operation by the rotation of the application roller 44.

  The present invention solves the above-described problems, and an object of the present invention is to provide a bookbinding apparatus that can equalize the temperature and viscosity of an adhesive in an adhesive reservoir in a short time in a short time.

  In order to solve the above-described problems, the bookbinding apparatus of 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, A control unit for controlling the agent application unit, the adhesive application unit comprising an application unit and an application unit driving device that moves the application unit along the back of the sheet bundle, and the application unit stores an adhesive. A heating means for heating the adhesive in the adhesive reservoir, a temperature measuring means for measuring the temperature of the adhesive in the adhesive reservoir, an application roller disposed so as to be partially immersed in the adhesive, and an application roller It has an application roller rotation motor that rotates, and when the temperature of the adhesive in the adhesive reservoir is raised to a predetermined application temperature suitable for application in the operation of the adhesive application means by the control means, until the application temperature is reached. To set up a warm-up temperature to the intermediate temperature range, and carrying out repeated alternately positive rotation and reverse rotation of the application roller in the warm-up temperature.

  Also, at least two warm-up temperatures are set in the intermediate temperature range, and the forward rotation and reverse rotation of the coating roller are alternately repeated at the lowest warm-up temperature at a lower rotational speed than the rotational speed during the coating operation. The coating roller is rotated forward at a higher rotational speed than the rotational speed during the coating operation at the highest warm-up temperature.

  Further, the application roller is characterized in that it rotates at least at different rotational speeds and driving time conditions between forward rotation and reverse rotation.

  As described above, according to the present invention, there is a massive adhesive in the intermediate temperature range where the adhesive is not in a state suitable for application, but at the warm-up temperature at which the adhesive melts to some extent, By continuously rotating the coating roller alternately forward and reverse rotation without sudden stirring at once by continuous rotation of the coating roller, the scattering of the adhesive due to the rotation of the bulk adhesive can be prevented. While preventing, the temperature and viscosity of the adhesive can be made uniform in a short time by giving an appropriate stirring effect little by little. Moreover, the damage by the overheating of an adhesive agent can be suppressed by starting stirring at the early stage of the temperature rising process of an adhesive agent.

In addition, it is desirable that the application roller be rotated at different rotational speeds and driving time conditions between forward rotation and reverse rotation, so that the stirring efficiency is improved.
In addition, at the highest warm-up temperature at which the adhesive melts to such an extent that the clumps are eliminated, the temperature of the adhesive is increased by rotating the application roller forward at a higher rotational speed than the rotational speed during the application operation. Unevenness is eliminated at an early stage to promote uniform temperature and viscosity.

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. 17, 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.
(Coating unit)
As shown in FIG. 19, the application unit 3 includes an adhesive reservoir 43 that stores hot melt adhesive, an application roller 44 that is disposed so as to be partially immersed in the molten adhesive, and a rotation that supports the application roller 44. Temperature measuring means for measuring the adhesive temperature (T2) of the adhesive reservoir 43, and an electromagnetic induction coil 48 as a heating means mounted on the fixing member 47, an application roller rotating motor 46 for driving the shaft 45, the rotating shaft 45 And an adhesive temperature sensor 71 (see FIG. 4).

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 other configuration of the coating unit 3 is the same as that shown in FIG. 19, and a detailed description thereof is omitted.
(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.
(Control part)
As shown in FIG. 4, the bookbinding apparatus 1 includes a control unit 65 that controls the bookbinding operation and a temperature sensor 66 that serves as a temperature measurement unit that measures the atmospheric temperature or the room temperature (T1) inside the apparatus. The sheet bundle thickness sensor 36, the adhesive reservoir position sensor 51, the pressure bonding unit position sensor 60, the temperature sensor 66, the operation unit 14, the coating unit driving device 42, the pressure bonding unit driving device 52, and the movable plate are arranged in the control unit 65. The drive device 57, the clamp drive device 37, and the adhesive temperature sensor 71 are 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. As shown in FIG. 3, when the control unit 65 receives an ON operation of the main switch 15, the control unit 65 performs a warm-up operation (S1) prior to the bookbinding operation.

  In this warm-up operation (S1), the electromagnetic induction coil 48 of the coating unit 3 is energized, the heating plate 50 is heated, and the adhesive stored in the adhesive reservoir 43 is heated and melted, and the adhesive reservoir 43 is heated. The adhesive is heated to a predetermined application temperature suitable for application, here, 175 ° C. At this time, at least two warm-up temperatures are set in the intermediate temperature range until the coating temperature is reached. Here, 130 ° C. is set as the first warm-up temperature and 150 ° C. is set as the second warm-up temperature. However, a larger number of warm-up temperatures can be set.

  As shown in FIG. 2, only the heating by the electromagnetic induction coil 48 is performed without performing any operation until the temperature of the adhesive measured by the adhesive temperature sensor 71 reaches the lowest first warm-up temperature of 130 ° C. (S2). Next, forward rotation / reverse rotation control (S3) is started as a first warm-up operation at 130 ° C., which is the lowest first warm-up temperature, and is performed until it reaches 150 ° C. (S4). Next, high-speed rotation control (S5) is started as a second warm-up operation at 150 ° C., which is the highest second warm-up temperature, and is performed until the coating temperature reaches 175 ° C. (S6).

  In the forward rotation / reverse rotation control (S3), the forward rotation and the reverse rotation of the coating roller 44 are alternately and repeatedly performed at a lower rotational speed than the rotational speed during the application operation. The forward rotation and the reverse rotation are short-time rotations of about several hundreds msec. In this embodiment, the reverse rotation amount is set to be smaller than the normal rotation amount, and the rotation number and the drive that define the rotation amount are driven. The time conditions are different. However, which rotation amount is larger is not a problem here, and it is important to set a difference in rotation amount between forward rotation and reverse rotation.

  That is, when forward rotation and reverse rotation of the same rotation amount are performed for a short time, the same part of the application roller 44 is always exposed to the air, and as a result, the surface temperature of the application roller 44 becomes non-uniform. However, by setting a difference in rotation amount between the normal rotation and the reverse rotation, the application roller 44 can be rotated little by little in either the normal rotation direction or the reverse rotation direction, and the entire surface of the application roller 44 is in the air and liquid. The surface temperature of the application roller 44 becomes uniform.

In the high-speed rotation control (S5), the application roller 44 is rotated forward at a higher rotational speed than the rotational speed during the application operation.
In the warm-up operation (S1) described above, the first warm-up in which the adhesive is melted to some extent, although there is a lump of adhesive in an intermediate temperature range where the adhesive is not suitable for application. At a temperature of 130 ° C., by rotating the coating roller 44 alternately and repeatedly in the forward and reverse directions without agitating rapidly at once by continuous rotation of the coating roller 44, it is possible to rotate the massive adhesive. By providing an appropriate stirring effect little by little while preventing scattering of the resulting adhesive, the entire temperature and viscosity of the adhesive can be made uniform in a short time. Moreover, the damage by the overheating of an adhesive agent can be suppressed by starting stirring at the early stage of the temperature rising process of an adhesive agent. The agitation efficiency is improved by rotating the application roller 44 in the forward rotation and the reverse rotation with at least different rotation speed and driving time conditions. By rotating the coating roller 44 forward at a higher rotational speed than the rotational speed during the coating operation at a second warm-up temperature of 150 ° C. at which the adhesive melts to such an extent that the clumps are eliminated. The temperature unevenness is eliminated at an early stage to promote uniform temperature and viscosity.

Then, when the temperature of the adhesive measured by the adhesive temperature sensor 71 reaches the application temperature 175 ° C., the warm-up operation (S1) is terminated and the standby state is entered.
In this standby state, the application roller 44, for example, rotates for 10 seconds and repeats the operation of stopping for 10 seconds, and measures whether or not the no-operation time has passed the set value of 10 minutes (S7). If the ON operation (S8) of the start button 19 is received while the no-operation time has not exceeded the set value of 10 minutes, the control unit 65 enters the bookbinding operation (S9).

  When the set time of 10 minutes has elapsed, the energization of the electromagnetic induction coil 48 is stopped to turn off the heater, and the deodorizing fan 4 of the deodorizing unit 4 is continuously operated to keep the deodorizing fan ON. To do. It is measured whether or not this state has passed the set value of 20 minutes (S11). When the start button 19 is turned ON while this state does not pass the set value 20 minutes, the control unit 65 returns to the warm-up operation (S1), and when the set value 20 minutes passes, the automatic power supply is turned off. (S13) and control is terminated.

When the bookbinding operation (S9) is entered, 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 clamps 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.

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.
(Gluing process for top glue binding)
When performing gluing in the top glue bookbinding, 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, while rotating the coating roller 44, thereby the adhesive agent. The adhesive in the reservoir 43 is applied to the back of the sheet bundle 6 in both the forward path and the return path. The discharging process in the sheet binding is the same as that described above, and a detailed description thereof is omitted.
(Gluing process for case binding)
When gluing in case binding, the control unit 65 places the cover 12 on the cover base 13 and receives the ON operation of the start button 19 again, as shown in FIG. 7 and FIG. Enter into the gluing operation.

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 larger than the intermediate value 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 bending of the sheet bundle 6 is prevented.

  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. The cover sheet 12 is pressure-bonded to the nodes on both sides of the sheet bundle 6 with the plate 56, so that the adhesive S spread on the cover sheet 12 and the adhesive S applied to the node of the sheet bundle 6 in the pasting process are applied to the sheet bundle. The cover 12 is firmly adhered to the throat by being spread out by the throat 6.

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 graph which shows the temperature change of the adhesive agent in the coating unit of the bookbinding apparatus The flowchart figure which shows the control procedure of the standby process of the application unit Block diagram showing the configuration of the bookbinding device 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 Schematic diagram explaining the bookbinding operation of the bookbinding device Schematic diagram explaining the bookbinding operation of the bookbinding device Schematic diagram explaining the bookbinding operation of the bookbinding device A perspective view showing a conventional bookbinding apparatus Front view of the bookbinding device Side view of the bookbinding device The top view which shows the clamp part of the bookbinding device Front view showing the clamp part of the bookbinding device Side view showing the coating unit of the bookbinding apparatus Side view of the crimping unit of the bookbinding device Block diagram showing the configuration of the bookbinding device Schematic diagram explaining the bookbinding operation of the bookbinding device Schematic diagram explaining the operation of discharging the bookbinding of the bookbinding device

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 Fixed plate 57 Movable plate drive unit 58 Crimping Force control device 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 71 Adhesive temperature sensor

Claims (3)

An adhesive application means comprising: a clamping means for clamping the sheet bundle; an adhesive application means for applying an adhesive melted on the back of the paper bundle sandwiched by the clamping means; and a control means for controlling the adhesive application means. Comprises a coating unit and a coating unit driving device that moves the coating unit along the back of the sheet bundle, and the coating unit stores an adhesive reservoir, and heating means for heating the adhesive in the adhesive reservoir; A temperature measuring means for measuring the temperature of the adhesive in the adhesive reservoir, an application roller disposed so as to be partially immersed in the adhesive, and an application roller rotating motor for rotationally driving the application roller; In the operation of the adhesive application means, the warm-up temperature is set to an intermediate temperature range until the application temperature is reached when the adhesive in the adhesive reservoir is raised to a predetermined application temperature suitable for application. Bookbinding apparatus characterized by at Muappu temperature perform positive rotation and reverse rotation of the application roller repeated alternately. At least two warm-up temperatures are set in the intermediate temperature range, and at the lowest warm-up temperature, the forward and reverse rotations of the coating roller are alternately repeated at a lower rotational speed than the rotational speed during the coating operation. 2. The bookbinding apparatus according to claim 1, wherein the applicator roller is rotated forward at a higher rotational speed than the rotational speed during the coating operation at the highest warm-up temperature. The bookbinding apparatus according to claim 1 or 2, wherein the coating roller rotates at different rotational speeds and driving time conditions between forward rotation and reverse rotation.

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