JP4015736B2 - Sewing machine binding device for bookbinding machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a binding device of a bookbinding machine that binds a back portion of a printing book obtained by stacking and collating a plurality of signatures, and particularly relates to prevention of misalignment between signatures of a printing book.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, wire binding (saddle stitching) and sewing binding using thread are known as methods for binding back portions of a printed book obtained by stacking and collating a plurality of signatures.
The former is superior in terms of manufacturing efficiency, etc., but since the wire is exposed from the booklet, sufficient consideration is required from the viewpoint of safety, and the non-combustible material is separated when collecting the booklet. There are disadvantages such as necessity.
On the other hand, the latter does not have the disadvantages of the former, and is used for binding a notebook or notebook. Further, it can be said that sewing binding is more desirable than wire binding for a printed book that needs to ensure sufficient safety, such as an infant book.
[0003]
[Problems to be solved by the invention]
However, in the above-mentioned conventional binding of the bookbinding machine, the collated bookbinding is manually performed part by part, so the time required for the sewing binding becomes longer, for example, a huge amount like a weekly magazine or a monthly magazine. There is a problem that a certain number of issued copies cannot be used because a large amount of books cannot be bound in a short period of time.
Here, when automatically performing sewing binding of the collated booklet, for example, the sewing needle of the sewing machine is driven up and down from the upper side or lower side of the back part of the booklet, and the back part of the booklet is held by a rotating roller or the like. It is conceivable to drive the rotating roller intermittently in conjunction with the movement of the sewing needle of the sewing machine.
[0004]
However, there is a problem that if the printing book is intermittently driven while being sandwiched between rotating rollers, there may be a deviation between the signatures. In particular, when the balance of the book is out of alignment, such as when there is a separate sticker between the signatures, the difference in the paper type or quality of the signature, or the acceleration when the rotating roller is intermittently driven, etc. The above deviation may occur as a factor.
Although it is conceivable to reduce the acceleration during intermittent driving of the rotating roller to prevent the deviation, the time required for sewing and binding becomes longer.
[0005]
If there is a shift between the signatures, when one pattern is composed of the two-page spread pages (both left and right pages), the patterns on the left and right sides will be shifted at the throat of the book. There is a problem in that the quality of the printing book is deteriorated.
Therefore, the problem to be solved by the present invention is to automatically bind the back portion of the printing book with the sewing machine while preventing the deviation between the signatures of the printing book.
[0006]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, the invention of claim 1 is a sewing machine binding device of a bookbinding machine for binding the back of a printing book obtained by stacking and collating a plurality of signatures, and transporting the printing book A plate-like body provided with a plate-like body provided with an upper end gap having a cross-sectional C-shape extending in a long direction in the conveying direction of the booklet, and at least one side of the plate-like body provided on the plate-like body. A booklet detection unit for detecting the loading of the booklet into the sewing binding device, and a sewing machine provided on the loading side of the booklet into the booklet mounting unit and moving up and down the upper end gap of the booklet mounting unit. A sewing machine unit having a needle and a reciprocating movement along the conveying direction of the booklet are provided, and the flat part of the booklet mounted on the booklet mounting part is passed through the elongated hole of the booklet mounting part. Clamp part for clamping from the front and back sides, and arranged on the unloading side of the booklet from the sewing machine unit part A printing book transport unit having a pair of rotating rollers that sandwich the back of the printing book from above and below the upper end gap of the printing book mounting unit, and a driving unit for the rotating roller and the clamp unit of the printing book transport unit; The clamp unit is driven based on the detection result of the booklet by the booklet detection unit, the booklet is clamped, the sewing unit unit is driven to bind the booklet, and the sewing unit unit In conjunction with this operation, the clamp part is moved intermittently and the printing book transport part is intermittently driven.
[0007]
According to a second aspect of the present invention, in the sewing machine binding device of the bookbinding machine according to the first aspect, the drive unit is connected to the clamp unit via a one-way clutch to return the moved clamp unit to the initial position. A cylinder is provided.
According to a third aspect of the present invention, there is provided a binding device for a bookbinding machine according to the first or second aspect, wherein a flat portion of the bookbinding portion is provided on a side opposite to a side where the clamp portion of the bookbinding portion is provided. A pressing roller is provided for pressing from above.
[0008]
[Action]
In the present invention, when the printing book is carried in from the previous process, the clamp part holds the flat part of the printing book. Then, the sewing machine unit is driven and the book is stopped while the sewing needle pierces the book, and the clamp is moved intermittently by one pitch while the sewing needle is retracted. Move. By repeating this operation, the back of the book is bound with a sewing machine. In addition, after the printing book is clamped by the printing book transport unit, the clamping unit is released.
Therefore, since the binding is performed by intermittently moving the book in a state where the flat portion of the book is held between the clamps, there is no deviation between the signatures of the book.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a schematic side view showing an embodiment of a bookbinding machine to which the present invention is applied. First, a schematic configuration of the entire bookbinding machine will be described.
In FIG. 1, in the bookbinding machine 1, a printing book B in which a plurality of signatures are stacked and collated is carried into the sewing machine binding device 10 from the collating process 2, and the back of the printing book B is machine-sewn by the sewing machine binding device 10. After that, it is configured to be carried out to the post-processing step 3.
[0010]
The booklet received from the printing process is carried into the collation process 2.
In the collating process 2, the signatures are adsorbed one by one from the lower part of the box 2a stacked for each signature by a football (not shown) and are held by a rotary or swing gripper (not shown). . A collating feed chain 2c driven by the rotating roller 2b is provided on the lower side, and a signature is dropped on the collating feed chain 2c. This is continuously performed, and the collation of the book B is performed.
[0011]
The back portion of the collated book B is sandwiched between the rotating roller 2b and the carry-out roller 2d, and is carried into the sewing machine binding apparatus 10 which is the next process.
The sewing machine binding device 10 binds the back portion of the book B that has been collated. In this sewing binding, the top and bottom of the printing book B are continuously bound with a thread instead of a saddle stitch wire.
The printing book B carried out from the sewing binding device 10 is sent to a post-processing step 3 which is the next step. In the post-processing step 3, the feed chain 3b driven by the rotating roller 3a is provided as in the collating step 2, and the printing book B is sent from the rotating roller 3a and the carry-in roller 3c to the feeding chain 3b, and the thread trimming is performed. Processed.
[0012]
Next, the sewing binding device 10 of the bookbinding machine 1 will be described. FIG. 2 is a side view showing in detail the sewing binding device 10 of FIG. 1, and FIG. 3 is a front view showing the sewing binding device 10.
In the sewing machine binding device 10, the bookbinding portion 20 is made of a plate-shaped body having a cross-sectional C shape extending in the conveyance direction of the booklet, and has an upper end gap 21. Further, a long hole (small oval hole) 22 is formed on the surface of one side (the side where the clamp part 40 is provided) of the printing book mounting part 20. The long hole 22 is formed long in the conveyance direction of the printing book.
[0013]
The booklet detection unit 11 is a sensor that optically detects the leading end portion of the booklet sandwiched between the rotating roller 2b and the carry-out roller 2d in the collating process 2, and carries the booklet into the booklet mounting unit 20. It is for detection.
The sewing machine unit 30 is for binding the back portion of the booklet with a sewing machine. The sewing machine unit 30 is provided on the carry-in side of the booklet mounting unit 20 and includes a sewing needle 31 that moves up and down the upper end space 21 of the booklet mounting unit 20. I have.
A guide roller 15 for guiding the printing book to the sewing machine unit 30 is provided on the front side of the sewing machine unit 30.
[0014]
The clamp part 40 is provided on the long hole 22 side (right side in FIG. 3) of the printing book mounting part 20. The clamp portion 40 is supported on a seat 47 extending in the conveyance direction of the printing book via a linear motion bearing 46, and can reciprocate along the conveyance direction of the printing book.
The clamp part 40 includes an arm 41 rotatably attached to the turning part 41a, a cylinder 42 attached to the tip of the arm 41, and a clamper 43 made of rubber or the like attached to the tip of the cylinder 42. I have.
[0015]
Further, a clamper 44 disposed opposite to the clamper 43 via the long hole 22 of the bookbinding unit 20 is provided inside the printing book mounting unit 20. The clamper 44 is fixed to a support body 45 extending from the lower side of the clamp portion 40 to the inside of the bookbinding portion 20. The above-mentioned linear motion bearing 46 is coupled to the bottom surface side of the support body 45.
By driving the cylinder 42, the clamper 43 is moved so as to approach and separate from the clamper 44, and the flat part of the booklet mounted on the booklet mounting unit 20 by the clampers 43 and 44 is used as the booklet mounting unit 20. It is clamped through the long hole 22.
[0016]
Further, a cylinder 13 supported by a guide or the like that is movable in the same direction as the movement direction of the clamp unit 40 is provided below the clamp unit 40. This cylinder 13 is for returning the clamp part 40 after the movement to the initial position. Further, an absorber 14 is provided on the upper portion of the cylinder 13 so as to cushion the impact when it is in contact with the clamp portion 40.
The pressing roller 12 is rotatably provided on the arm 12a on the side opposite to the side on which the clamp part 40 is provided on the booklet mounting part 20, and the presser roller 12 mounted on the booklet mounting part 20 is provided. The flat part is pressed from above. That is, a gap corresponding to the thickness of the printing book is provided between the pressing roller 12 and the upper surface of the printing book mounting portion 20.
[0017]
The booklet transport unit 50 is disposed on the carry-out side of the booklet with respect to the sewing machine unit 30 and includes a pair of rotating rollers 51 and 52. The rotating roller 51 disposed on the upper side of the printing book mounting portion 20 is formed in a concave section, and the lower rotating roller 52 is formed in a convex section. A gap corresponding to the thickness of the printing book is provided between the rotating rollers 51 and 52. The rotary rollers 51 and 52 convey the printing book by being driven to rotate with the back of the printing book sandwiched from above and below via the upper end gap 21 of the printing book mounting unit 20.
[0018]
The drive unit 60 intermittently moves the clamp unit 40 in the conveyance direction of the booklet via the electromagnetic one-way clutch 65 in conjunction with the operation of the sewing machine unit unit 30, and the rotation roller 51 of the booklet conveyance unit 50. And 52 are intermittently driven.
The motor 61 of the drive unit 60 is a drive source of the drive unit 60, and a pulley 62a is fixed to the shaft. In addition, the rotating roller 51 of the above-described booklet conveying unit 50 is fixed to one end side of the shaft 63a, and a pulley 62b is fixed to the other end side. Then, an endless belt 64a is hung on the pulleys 62a and 62b so that they are interlocked with each other. A pulley 62c is fixed at an intermediate position of the shaft 63a.
[0019]
Furthermore, separate shafts 63b and 63c are connected to both ends of the clutch 65, respectively, and the power on the shaft 63b side is transmitted to the shaft 63c side when the clutch 65 is turned on. A pulley 62d is fixed to the end portion of the shaft 63b, and an endless belt 64b is hung on the pulley 62d and the pulley 62c so that both are interlocked.
A shaft 63c connected to the other end of the clutch 65 is rotatably supported by a bearing 66, and a gear 67a is fixed to a tip portion thereof. On the other hand, a rack 67b is attached to the bottom surface of the arm 45 of the clamp portion 40, and the rack 67b and the gear 67a are engaged with each other.
[0020]
In the sewing machine 10 having the above-described configuration, the printing book is loaded on the printing book mounting unit 20 when it is sent to the sewing machine 10 by the rotating roller 2b and the unloading roller 2d in the collating process 2. And passes through the guide roller 15 and is sent to the sewing machine unit 30 side. The booklet detection unit 11 detects the leading end of the booklet.
[0021]
Then, the binding position of the booklet, that is, the position where the sewing needle 31 is passed first on the top side of the booklet is sewn based on the conveyance distance of the booklet calculated from the elapsed time from the detection of the booklet and the conveyance speed. When the needle 31 is reached, the cylinder 42 of the clamp unit 40 is driven to clamp the print book between the clampers 43 and 44. At the same time as this, the sewing needle 31 is driven to perform control so as to start sewing stitching. Note that the position of the printing book is adjusted so that it is separated from the carry-out roller 2d in the collating step 2 when it is conveyed to the above-described position.
[0022]
When the printing book reaches the position where it is clamped by the clamp part 40, the flat part opposite to the side clamped by the clamp part 40 is pressed by the pressing roller 12, and flapping of the flat part is prevented.
When sewing binding is started, the motor 61 of the drive unit 60 is driven to rotate intermittently. The rotation of the motor 61 is transmitted to the shaft 63a through the pulley 62a, the endless belt 64a, and the pulley 62b, and the rotating roller 51 is rotated. Further, the shaft 63b is rotated through the pulley 62c, the endless belt 64b, and the pulley 62d by the rotation of the shaft 63a.
[0023]
Here, when the sewing machine is bound, the clutch 65 is turned on, and the rotation of the shaft 63b is transmitted to the shaft 63c. Therefore, the gear 67 a is rotationally driven, and the clamp portion 40 is intermittently moved along the linear motion bearing 46 through the rack 67 b meshing with the gear 67 a. By this intermittent movement, the printing book nipped by the clamp part 40 moves intermittently. Accordingly, the sewing needle 31 is driven up and down, and the printing book (clamp portion 40) is moved by one pitch while the sewing needle 31 is lowered. When the sewing needle 31 is piercing the printing book, the printing book ( If the clamp part 40) is stopped, the back part of the printing book can be bound by sewing from the top side to the ground side.
[0024]
Further, when the printing book continues to move intermittently, the top side of the printing book reaches the rotating roller 51 of the printing book transport unit 50. Since the rotary roller 51 is intermittently driven by the drive of the motor 61, when the printing book is sandwiched between the rotary rollers 51 and 52, the rotary roller 51 is intermittently moved by these.
[0025]
Further, after the printing book is sandwiched between the rotating rollers 51 and 52, the cylinder 42 is driven to control to release the clamping of the printing book by the clamp unit 40. Here, the time until the book is sandwiched between the rotary rollers 51 and 52 after the book is detected by the book detection unit 11 can be calculated from the transport speed of the book, and the clamp is performed based on this. What is necessary is just to control the drive of the cylinder 42 of the part 40. FIG.
Even if the clamping of the clamp unit 40 is released, there is no problem because the printing book is nipped by the rotating rollers 51 and 52 and conveyed. Further, if the back portion of the book is sewed once or twice, there is no deviation between the signatures of the book, so that there is no problem even if the clamping portion 40 is released during sewing binding.
[0026]
After releasing the clamp portion 40, the clutch 65 is turned off. Thereby, the clamp part 40 does not interlock with the drive of the motor 61. Subsequently, the cylinder 13 is driven and moved rightward in FIG. Thereby, the absorber 14 provided on the cylinder 13 contacts the clamp part 40 and pushes the clamp part 40 back to the initial position. Thereafter, the cylinder 13 moves away from the clamp portion 40 and returns to the initial position.
The clamp portion 40 is moved by the inertial force when it is intermittently moved even after the clutch 65 is turned off, but does not receive a large impact because it contacts the absorber 14.
[0027]
Even after the binding of the printing book by the sewing machine unit 40 is completed, the printing book is held between the rotation rollers 51 and 52 and is carried out from the sewing machine 10 to the post-processing step 3 side. Then, the printing book is sandwiched between the rotating roller 3a and the carry-in roller 3c in the post-processing step 3, and is conveyed by the feed chain 3b.
By repeating the above operation, the back portion of the booklet sequentially carried into the sewing machine binding apparatus 10 from the collating process 2 can be machine-sewn.
[0028]
In the present invention, since the flat portion of the printing book is intermittently moved while being clamped by the clamp portion 40, even if the intermittent movement speed is high, there is no deviation between the signatures. As a result, bookbinding in a short time becomes possible. In addition, by preventing misalignment between the signatures, it is possible to improve the quality of the printing book by preventing the left and right images and the like from being displaced at the throat in the spread page of the printing book.
[0029]
Although one embodiment of the present invention has been described above, the present invention is not limited to the above-described embodiment, and various modifications such as the following are possible.
(1) The clamp unit 40 is provided on one side of the bookbinding unit 20 and the pressing roller 12 is provided on the other side. However, the clamping unit 40 may be provided on both sides without providing the pressing roller 12.
[0030]
(2) After the booklet is held by the booklet transport unit 50, the clamping of the booklet by the clamp unit 40 is released. However, the present invention is not limited to this. Even if the booklet is held by the clamp unit 40 until the sewing binding is completed. good. However, if the clamping of the clamp 40 is released at an early stage and returned to the initial position as in the present embodiment, it is possible to cope with an increase in the conveyance speed of the printing book.
(3) The shape of the clampers 43 and 44 of the clamp unit 40 is generally circular in cross section, but may be any shape such as a square shape.
[0031]
【The invention's effect】
According to the present invention, since the printing book is moved intermittently while the flat part of the printing book is held between the clamp parts, the binding between the signatures does not occur. This enables bookbinding in a short period of time, and prevents misalignment between the signatures, so that the left and right images on the spread pages of the booklet will not be misaligned at the throat. Improvements can be made.
[Brief description of the drawings]
FIG. 1 is a schematic side view showing an embodiment of a bookbinding machine to which the present invention is applied.
FIG. 2 is a side view showing in detail the sewing machine binding apparatus of FIG. 1;
FIG. 3 is a front view showing a sewing binding device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Bookbinding machine 2 Collating process 3 Post-processing process 10 Sewing binding device 11 Bookbinding detection part 12 Pressing roller 13 Cylinder 14 Absorber 15 Guide roller 20 Booklet mounting part 21 Upper end gap 22 Slot 30 Sewing unit part 31 Sewing needle 40 Clamp Part 41 Arm 41a Rotating part 42 Cylinder 43 Clamper 44 Clamper 45 Support body 46 Linear motion bearing 47 Seat 50 Printing book transport part 51 Rotating roller 52 Rotating roller 60 Driving part 61 Motors 62a to 62d Pulleys 63a to 63c Shafts 64a and 64b Endless Belt 65 (One-way) Clutch 66 Bearing 67a Gear 67b Rack B

Claims (3)

A binding device of a bookbinding machine that binds a plurality of signatures and stitches the back of a printed book that has been collated,
It consists of a plate-like body provided with a C-shaped upper end gap extending in the conveyance direction of the book, and a long hole formed in the conveyance direction of the book is provided in at least one of the plate-like bodies. A bookbinding section,
A booklet detection unit for detecting the loading of the booklet into the sewing machine;
A sewing machine unit having a sewing needle which is provided on the carry-in side of the booklet to the booklet mounting unit and moves up and down the upper end gap of the booklet mounting unit;
Clamp provided so as to be able to reciprocate along the transport direction of the booklet, and for clamping the flat part of the booklet mounted on the booklet mounting part from the front and back sides through the elongated hole of the booklet mounting part And
A printing book transporting section having a pair of rotating rollers arranged on the unloading side of the printing book from the sewing machine unit and sandwiching the back of the printing book from above and below the upper end gap of the printing book mounting section;
The rotation roller of the printing book transport unit and the drive unit of the clamp unit,
Based on the detection result of the booklet by the booklet detection unit, the clamp unit is driven to clamp the booklet, the sewing unit unit is driven to bind the booklet, and the operation of the sewing unit unit is performed. The binding device of the bookbinding machine is characterized in that the clamp unit is intermittently moved in conjunction with the printing booklet conveying unit and is rotated intermittently. In the binding device of the bookbinding machine according to claim 1,
The sewing machine binding apparatus of a bookbinding machine, wherein the drive unit includes a cylinder that is connected to the clamp unit via a one-way clutch and returns the moved clamp unit to an initial position. In the binding device of the bookbinding machine according to claim 1 or 2,
A sewing and binding apparatus for a bookbinding machine, wherein a pressing roller for pressing a flat portion of the printing book from above is provided on the opposite side of the printing book mounting portion from the side on which the clamp portion is provided.

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