JP2005144934A - Cover conveying equipment for bookbinding machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide cover conveying equipment for a bookbinding machine which sets correctly a position of pasting a book body and a cover together, irrespective of the presence of nonuniformity or unsteadiness of components constituting a clamper driving part or a cover conveyance driving part. <P>SOLUTION: The cover conveying equipment wherein the cover 7 is conveyed to a cover pasting roller 42 by a conveying pawl 31 fixed to a conveying chain 3 and is pasted on the shelfback side of the book body 5 held by a moving clamper 4, is provided with a sprocket 36 for position correction which engages with the conveying chain 3. The position of this sprocket 36 is changed according to a positional discrepancy between the book body 5 and the cover 7 for each clamper 4 by a stepping motor 37 and the position of the conveying pawl 31 is corrected to a position where the cover 7 is set exactly at the cover pasting position of the book body 5. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a cover transport device for a bookbinding machine that feeds a cover sheet to be supplied to a perfect binding machine.

  For example, a bookbinding machine that finishes a book by applying glue to the back of a stack of sheets (hereinafter referred to as the main body) stacked in a predetermined order on a collating machine and attaching a cover to the back of the glue-coated back is well known. is there. FIG. 7 is a plan view showing a schematic configuration of such a perfect binding machine, where A is a collator transport unit, B is a body supply unit, C is a milling unit, D is a gluing unit, E is a cover pasting unit, F is a nipping section (back molding section), G is a discharge section, H is a cover supply device, 1 is a transport chain, 2 is a drive sprocket, 3 is a driven sprocket, 4 is a clamper, 5 is a body, 6 is a cover tray, and 7 is a cover tray It is a cover.

  The transport chain 1 is stretched over the drive sprocket 2 and the driven sprocket 3, and moves around between the main body supply part B and the discharge part G by the rotational drive of the drive sprocket 2. As shown in FIG. 2, the clamper 4 includes a fixed plate 4b that is fixed to the transport chain 1, a movable plate 4c that is movable toward and away from the fixed plate 4b, and support plates 4g and 4f that are connected to the movable plate 4c. The clamp follower opening / closing connecting plate 4a to which the cam follower 4h is attached and the spring 4d. When the cam follower 4h comes into contact with the cams disposed in the body supply section B and the discharge section G, the movable plate 4c is separated from the fixed plate 4b against the force of the spring 4d, that is, the clamper 4 is opened, the main body 5 is inserted between the fixed plate 4b and the movable plate 4c in the main body supply section B, and the spring in the discharge section G. The body 5 sandwiched by the force of 4d is released.

  A plurality of clampers 4 are attached to the transport chain 1 at a predetermined interval, and each clamper 4 is sequentially transported to the body supply section B, where each clamper 4 is transported by the collator transport section A. The body 5 is inserted into the clamper 4 and clamped. The clamper 4 holding the body 5 scrapes and aligns the back of the body 5 via the milling part C, and applies glue to the back of the body 5 that is scraped and aligned via the gluing part D to bypass the drive sprocket 2. Then, the cover 7 supplied from the cover supply device H is pasted on the back of the body 5 to which the glue is applied via the cover pasting part E, and the cover 7 is pasted via the nipping part (back molding part) F. The back and throat of the main body 5 are tightened and formed, and the main body 5 is discharged through the discharge section G, bypasses the driven sprocket 3 and passes through the main body supply section B, and the main body 5 is placed in the clamper 4. insert.

  The cover sheet supply device H, the cover sheet pasting part E, and the nipping part (back molding part) F are configured as shown in FIG. That is, the cover sheet supply device H has an opening 6a for discharging the cover sheet 7 at the lower end, and adsorbs the tray 6 for accommodating an appropriate number of cover sheets 7 and the cover sheet 7 facing the opening 6a one by one at a predetermined timing. A sucker 8 to be taken out and a pair of rollers 9a and 9b for feeding out the cover sheet 7 taken out by the sucking of the sucker 8 are configured.

  The cover sticking section E is composed of a transport chain 12 spanned between the drive sprocket 10 and the driven sprocket 11, a transport claw 13 fixed to the transport chain 12, and a cover sticking roller 14. The cover sheet 7 sent out from the rollers 9a and 9b is pushed forward by the conveying claw 13 and sent onto the cover sheet application roller 14. The cover 7 sent on the cover sticking roller 14 is sandwiched by the clamper 4 and is stuck in sequence by moving the clamper 4 and feeding the cover 7 from a predetermined position on the back of the main body 5 with glue applied on the back. wear.

The nipping portion (back molding portion) F slides on the nipping body 17 and the nipping body 17 provided with a nipping plate 15 for tightening the throat of the body 5 from both sides and a pressing plate 16 for pressing the cover 7 against the back of the body 5. A machine base 18 that freely supports, a cam 19 and a swing lever 20 that drive the machine base 18 up and down, and a cam 21 and a swing lever 22 that slide the nipping body 17 to the left and right, and the clamper 4 is nipped. When positioned above the main body 17, it is lifted by the action of the cam 19 and the swing lever 20 and presses the pressing plate 16 against the back of the body 5, and the nipping main body 17 is clamped by the action of the cam 21 and the swing lever 22. 4 is moved together with the nipping plate 15 between them, and the throat of the body 5 is tightened from both sides to form.
JP 2001-72269 A JP 2001-80233 A

  By the way, in order to attach the cover 7 to a predetermined position on the back surface of the main body 5 that is clamped by the clamper 4 and moved, it is necessary to synchronize the position of the transport claw 13 fixed to the transport chain 12 and the position of the clamper 4. There is. This synchronization generally takes out power from one power source, for example, a motor, and drives a transport sprocket 2 for driving a transport chain 1 to which a clamper 4 is fixed and a transport chain 12 to which a transport claw 13 is fixed through an appropriate transmission mechanism. While giving to the drive sprocket 10, it synchronizes mechanically using a highly accurate transmission mechanism and a conveyance chain.

  However, there is a dissatisfaction that the position where the main body 5 and the cover 7 are affixed due to variations that are inevitable in manufacturing the parts that make up the transmission mechanism and the transport chain, and that are necessary for operation, and further due to the use of sprockets and transport chains. There was a problem that the dissatisfaction increased as the amount used increased due to wear and the like.

  The problem to be solved by the present invention is that the position where the body and the cover are affixed accurately regardless of the variation or backlash of the parts constituting the clamper drive unit or the cover transport drive unit, and the problem is solved. is there.

  A cover transport apparatus for a bookbinding machine according to the present invention has a body transport means for arranging and fixing a plurality of clampers, sandwiching the body between each clamper and sequentially moving a cover cover pasting section, and disposed on the cover pasting section. The main feature is that it is a cover transport means for sequentially transporting the cover sheets to be attached to the body sandwiched between the clampers, and a correction means for correcting the position of each cover sheet transported to the cover transport means.

  In the present invention, since a correction unit is provided for correcting the position of each cover sheet to be conveyed to the cover sheet conveying unit that sequentially conveys the cover sheets to be attached to the body, this correction is performed when the position where the body and the cover are attached is out of a predetermined position. By correcting the means, it is possible to immediately return to a predetermined position, and it is possible to easily reduce variations in the position where the main body and the cover are attached.

  Correction means that corrects the position of each cover transported to the cover transport means for the purpose of accurately positioning the main body and cover regardless of whether the components constituting the clamper drive section or cover transport drive section are uneven or loose. Realized by providing. Embodiments of the present invention will be described below with reference to the drawings.

  1 is a side view showing a configuration of a main part of a cover transport apparatus for a bookbinding machine according to an embodiment, FIG. 2 is a perspective view of a clamper, FIG. 3 is a side view of the cover transport apparatus according to the embodiment, and FIG. 5 is a plan view of the cover sheet conveying device shown in FIG. 5, FIG. 5 is an arrow view of arrow X shown in FIG. 3, and FIG. 6 is an arrow view of arrow Y shown in FIG. 3 to 6, the same parts as those shown in FIG. 1 are denoted by the same reference numerals.

  In FIG. 1, 4 is a clamper, 5 is a body, 7 is a cover, 30 is a transport chain, 31 is a cover transport claw, 32 is a drive sprocket, 33 and 34 are driven sprockets, 35 is a tension sprocket, and 36 is a position correction sprocket. , 37 is a stepping motor, 38 is a push rod, 39 is an operation lever, 40 is a cover carrying roller, 41 is a pressing roller, 42 is a cover sticking roller, 43 is a clamper detector (proximity switch), 44 is a cover detector, 45 Is a guide plate, and 46 is a side wall plate.

  The clamper 4 is configured in the same manner as the clamper 4 shown in FIG. 2, and a detection piece 4e is provided on the front end side of the fixed plate 4b. The clamper 4 is stretched between the drive sprocket 2 and the driven sprocket 3 shown in FIG. , And is fixed to a transport chain 1 that circulates between the body supply unit B and the discharge unit G. The body 5 is sandwiched by the body supply unit B, and the milling unit C, the pasting unit D, the cover pasting unit E, the nipping unit (back molding unit) F, and the discharge unit G are moved. A proximity switch 43 is disposed near the cover sticking roller 42 of the cover sticking portion E, and detects the detection piece 4e of the clamper 4 passing through the proximity switch 43. Thereby, the position of the moving clamper 4 is detected.

  When the clamper 4 transports the body 5 while sandwiching the body 5, the rear end of the body 5 is always located on the support shaft 4 f located on the rear side with respect to the moving direction for supporting the movable plate 4 c, and the position of the clamper 4 is detected. To do so, the rear end of the main body 5 is detected.

  The transport chain 30 is disposed in the cover sticking section E (see FIG. 7), and a driven sprocket 33 fixed on the same axis as a cover carry-in roller 40 for carrying the cover 7 delivered from the cover supply device H (see FIG. 8). The sprocket 34, the position correcting sprocket 36, the drive sprocket 32, and the tension sprocket 35 fixed coaxially with the cover sheet adhering roller 42 are wound around the sprocket 32 and rotated around the sprocket 32 by the rotational drive of the drive sprocket 32.

  A conveyance claw 31 is fixed to the conveyance chain 30 at a predetermined interval, and the conveyance claw 31 is moved by the movement of the conveyance chain 30, and the back of the cover sheet 7 carried between the cover sheet carry-in roller 40 and the pressure roller 41. The end is pushed along the guide plate 45 to the cover sticking roller 42 by the conveyance claw 31.

  The cover detector 44 is arranged at a position farther from the cover sticking roller 42 between the cover carry-in roller 40 and the cover sticking roller 42 than the size of the cover 7 and detects the rear end of the cover 7 moving on the guide plate 45. . Instead of detecting the rear end of the cover 7, the conveyance claw 31 that moves by the movement of the conveyance chain 30 may be detected.

  The moving speed of the conveying chain 30, that is, the moving speed of the conveying claw 31 is matched with the moving speed of the clamper 4. Initially, the position of the conveying claw 31 is the position of the cover attachment position of the body 5 sandwiched between the clamper 4 on the cover attachment roller 42. It is set to be the rear end. With this setting, a cover that is pushed forward by the conveying claw 31 is attached to the cover attachment position of the main body 5 that is normally held between the clampers 4.

  The position correcting sprocket 36 is connected to a push bar 38 that moves linearly according to the rotation of a stepping motor (or servo motor) 37 via an operation lever 39, and moves in the vertical direction by the movement of the push bar 38. That is, when the operation lever 39 is pushed with the push rod 38, the position correcting sprocket 36 is pushed up, whereby the conveying claw 31 is advanced in the moving direction, and the position of the conveying claw 31 is corrected to the position advanced with respect to the clamper 4. Is done. Further, when the operation lever 39 is pulled up by the push rod 38, the position correcting sprocket 36 is pushed down, and the position of the conveying claw 31 is corrected to a position delayed from the clamper 4.

  The stepping motor 37 is driven by a time difference that occurs between the time when the clamper 4 is detected by the proximity switch 43 and the time when the rear end of the cover 7 is detected by the cover detector 44 (including the position of the main cover attached) When the time difference between the detection of the clamper 4 by the proximity switch 43 and the detection of the rear end of the cover 7 by the cover detector 44 is different from the reference time difference, Rotation is driven by the position shift due to the different time difference. For example, when the movement of the clamper 4 causes variations in the cover attachment position due to the extension of some links constituting the conveyance chain, the proximity switch 43 detects the clamper 4 and the cover detector 44 detects the rear end of the cover 7. The time difference becomes shorter than the preset time difference, and the attachment position of the cover 7 changes. However, the reduced time difference, the stepping motor 37 is driven, and the position of the transport claw 31 is corrected. Align the position where the main body 5 and the cover 7 are pasted.

  As described above, the position correcting means including the position correcting sprocket 36 and the stepping motor 37 that rotates the position correcting sprocket 36 by the amount of displacement of the main body 5 and the cover 7 is formed from the conveying chain 30 and the conveying claw 31. Since the position shift amount is corrected for each clamper 4, the power source for driving the clamper 4 and the power source for moving the transporting pawl 31 using a large number of power transmission parts are the same. It is possible to ensure the accuracy of the position of attaching the cover without affecting the variation of each part. Further, even if uneven pitch variation occurs in the transport chain due to elongation or the like, it is not necessary to immediately replace the chain, and costs can be reduced.

  In the example shown in FIGS. 3 to 6, an operation knob 37a is added to the operation lever 39 for operating the position correction sprocket 36 in parallel with the stepping motor 37, and the operation lever 37a is connected to a push rod 38a that moves linearly by the operation. Thus, if the position of the transport claw 31 can be corrected by operating the operation knob 37a as described above, it is difficult to correct the position of the transport claw 31 for each clamper. The position of the transport claw 31 can be corrected as appropriate. In addition, the code | symbol 47 shown in FIG. 6 is a rotation stopper.

FIG. 3 is a side view illustrating a configuration of a main part of a cover transport device for a bookbinding machine according to an embodiment of the present invention. FIG. 2 is a perspective view of a clamper of the cover transport device for a bookbinding machine shown in FIG. 1. (Example 1) 1 is a side view of a cover transport device for a bookbinding machine according to an embodiment of the present invention. FIG. 4 is a plan view of the cover sheet conveying device shown in FIG. 3. It is an arrow view of the arrow view X shown in FIG. It is an arrow view of the arrow view Y shown in FIG. It is a top view which shows the outline structure of a perfect binding machine. It is a side view which shows the structure of the conventional cover supply apparatus, a cover sticking part, and a nipping part.

Explanation of symbols

4 Clamper 5 Body 7 Cover 30 Transport chain 31 Cover transport claw 32 Drive sprockets 33 and 34 are driven sprockets 35 Tension sprockets 36 Position correction sprockets 37 Stepping motors 38 Push rods 39 Operation levers 40 Cover sheet loading rollers 42 Cover sheet sticking rollers 43 Clamper detection (Proximity switch)
44 Cover detector

Claims (3)

  A plurality of clampers are arranged and fixed, and there is a body transporting unit that moves the cover sticking part in order by holding the body between each clamper, and sequentially transporting the cover sheets placed on the cover sticking part and attached to the body sandwiched by the clamper A cover transport apparatus for bookbinding machine, comprising a cover transport means for correcting the position of each cover transported to the cover transport means.   The cover transport means is fixed to the transport chain, and includes a transport claw that abuts the rear end of the transport cover and pushes the cover, and the correction means drives the sprocket that meshes with the transport chain and the position of the sprocket. 2. The cover transport apparatus for a bookbinding machine according to claim 1, further comprising: means for correcting the position of each cover transported to the cover transport means by changing the position of the sprocket.   First detection means for detecting the position of the clamper and second detection means for detecting the position of the cover sheet to be conveyed are provided, and by detection by the first detection means and detection by the second detection means, 3. A cover transport apparatus for a bookbinding machine according to claim 1, wherein the position of each cover transported by the cover transport means is corrected.

Images