JPH10151876A - Forward or reverse former folding machine for printer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate forward and reverse former foldings by using one former member without changing its direction at a low cost by providing two front and back reversing means at upstream and downstream sides of the former in a feeding direction of a continuous sheet. SOLUTION: Front and back reversing means 2A, 2B are respectively provided at upstream and downstream sides of a former member 3 in a feeding direction of a web W, and a folding cylinder is provided at the downstream side of the means 2B. In the case of forward former folding the web W, the web W is fed to the member 3, the web W1 former folded here is passed from nipping rollers 6A to nipping rollers 6B, and sent to the cylinder side. Meanwhile, in the case of reverse former folding the web W, the web W is passed to the means 2A, reversed front side back, and then sent to the member 3. Then, the web W is reversed via the means 2B from the nipping rollers 6A, and then sent to the cylinder side via the nipping rollers 6B.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a forward / reverse former folder of a printing machine for folding a continuous sheet (web) on which a pattern is printed by a printing apparatus in a forward / reverse-form folder.

[0002]

2. Description of the Related Art For example, in a bookbinding process using a folding machine of a rotary printing press, a web is folded in a regular formal fold, which is a normal formal fold, as necessary, in relation to imposition of a picture of a signature. In other words, two types of folding may be performed: the back side of the forward-form fold is the front side, and the fold line is the forward-form fold and the reverse-form fold is back-to-back. As a folding machine for performing such forward / reverse former folding, the following is conventionally known.

That is, as shown in FIG. 4, a forward / reverse former folding machine 50 of a first system is a first folding machine 51 for performing forward / forward folding of a web W on which a picture is printed by a printing apparatus.
And a second folding machine 52 that performs reverse former folding are provided in the same direction, and the first and second folding machines 51 and 52 are selectively used according to the imposition of the signature.

A first folding machine 51 includes a regular former member 53 for folding the web W in the regular former, and a regular former member 5 for folding the web W.
3, a forward body 54 for laterally folding the web W folded by the forward former 53, and the forward body 54.
Is provided with a positive drive mechanism 55 for driving the. The second folding machine 52 includes a reverse former member 53 ′ that reversely folds the web W, a reverse fold body 54 ′ that horizontally folds the web W folded by the reverse former member 53 ′, and a reverse fold body 54 ′. Part 54 '
Is provided with a reverse drive mechanism 55 'for driving.

Each of the folding machines 51 and 52 has a base 56
5 (the printing apparatus side, FIG. 5).
The forward / reverse drive mechanisms 55 and 55 'and the transmission-side frame 57 are provided on the upper side (middle upper side), and the operation-side frame 58 is provided on the downstream side. The regular former member 53 is formed in a triangular shape, and extends along the running direction of the web W.
The triangular points are arranged obliquely downward. Therefore, since the web W moves along the triangle via the drag roller 59 while traveling, the left and right sides are directed to the inside, that is, the back side, and the web W is vertically folded from the center in the width direction of the web W. .

Further, the reverse former member 5 of the second folder 52
3 ′ is arranged to face the normal former member 53, and the triangular point thereof is opposed to the running direction of the web W, so that a plurality of webs 3 ′ can be sent to the reverse folding body 54 ′. A guide roller 48 and a drag roller 59 for pulling the web W toward the reverse former member 53 'are provided. And the web W in the second folding machine 52 is:
The web W is folded at the first folding machine 51 to the front side, and the folding lines of the webs W at the folding machines 51 and 52 are back to back. In other words, the former-form folding of the first folding machine 51 is reversed.

[0007] Inside the transmission-side frame 57, a forward drive mechanism 55 of the first folding machine having gears and the like as constituent members.
And a reverse drive mechanism 55 ′ of the second folder 52, and a cover 49 that covers these forward and reverse drive mechanisms 55, 55 ′ is attached outside each frame 57. In addition, the folding cylinder portions 54 and 54 ′ are provided with the ramming cylinder 7 and the cutting cylinder 9.
And a biting cylinder 12.

As shown in FIG. 5, the forward / reverse former folder 60 of the second type is formed of one unit provided above a base 66, and the former member 63 of the former folder 60 is formed by one unit.
The former member 63 can be rotated by 80 °, and this former member 63 is used for normal former folding indicated by a solid line and reverse former folding indicated by a two-dot chain line as necessary. In the second system, the same structures and members as those in the first system are denoted by the same reference numerals, and detailed description thereof will be omitted or simplified.

Although not shown, the third type forward / reverse former folder is the same as the first type former folder 50 in which the first folder 51 and the second folder 52 are integrated. It has a structure. That is, a normal former member and a reverse former member are provided facing each other on one base,
Further, the forward folding body of the first folding machine and the reverse folding body of the second folding machine are integrally formed, and the forward / reverse drive mechanism of each folding machine is integrally formed on one transmission side. It is stored in the frame.
Therefore, the axial length dimension of the integrated folding drum section is:
Each folding body part 5 in the former type former folding machine 50
4 is almost twice the length L1 in the axial direction.

[0010]

However, in the forward / reverse former folder of the first type, a first folder 51 and a second folder 5 are used.
2, the folding machines 51 and 52 each include a drive mechanism 55, 55 'and a cover 49, and furthermore, the machine inspection and machine operation of each device are performed on the operation side of the folding machine. Therefore, a space corresponding to the space between the folding machines 51 and 52 is required, and a space for the power transmission mechanism and the like and a space for operation and the like must be secured. Therefore, there is a problem that a large space is required,
It was difficult to install in a small factory.

Further, a forward / reverse former folder 60 of the second type is used.
Then, when switching from either the forward or reverse direction to the other direction, it is necessary to rotate the former member 180 ° and then pass through the paper, so that it takes a long switching time and the operability is poor. Since the former member 63 is rotated by 180 °, the structure is complicated and maintenance is also difficult. Further, the former member 63 is
Because of the structure of rotating by 0 °, it is difficult to obtain the positional accuracy with respect to the folding body portion 54 of the folding device and the like, and if the frequency of use is high, the play of the rotating structure may increase.

Further, in the forward / reverse former folder machine of the third type, since the integral forward / reverse drive mechanism and the cover are attached to the transmission-side frame, the transmission-side frame is provided with a casting for adjusting each folding body. No holes can be provided. Therefore, when individually adjusting the needle device, the ramming spatula, the biting means, etc., which are mounted side by side in the axial direction, such as the ramming drum of the folding drum section, the folding drum section is operated from the operation side frame side of the former folding machine. The adjustment must be done by reaching over the entire axial length. However, since this length is almost twice as long as the length L1 of each folding body in the former type folding machine, there are inconveniences such as inaccessibility and the like. However, there is a problem that work is difficult to perform, and work efficiency is poor.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a forward / reverse former folding machine for a printing press which can use one former member without changing its direction and requires only a simple structure and requires a small installation space.

[0014]

SUMMARY OF THE INVENTION A forward / reverse former folder of a printing machine according to the present invention is a forward / reverse former folder for a printing machine for folding a continuous sheet on which a pattern is printed by a printing apparatus in a forward direction or a reverse direction. A former member for forming a continuous sheet in a former direction, a first side-reversing means provided on the upstream side of the former member in a running direction of the continuous sheet, and capable of reversing the side of the continuous sheet; A second member provided on the downstream side in the traveling direction of the continuous paper of the member and capable of reversing the front and back of the continuous paper folded by the former member;
A folding body provided further downstream in the traveling direction than the second front and back reversing means, and laterally folding a continuous sheet that has been formed by the former member and then passed through the second front and back reversing means. It is characterized by comprising.

In the above, the forward-former folding means
The continuous paper on which the pattern is printed by the printing device is folded by the former member in a state of being sent from the printing device, and
This refers to folding horizontally in the folded body as it is. Also, the reverse former folding is the reverse of the above, that is, the back side of the forward folding is the front side, and the folding line is back to back with the folding line of the forward folding, and in that state, it is folded sideways at the folding body part Say. Further, the first and second reversing means may be of any structure, for example, using a turn bar or the like, as long as the continuous paper can be reversed upside down (180 °). Further, the first front / back reversing means may be provided on the upstream side in the traveling direction of the web of the former member, but is preferably provided as close to the former member as possible. Further, the forward / reverse former folder of the printing press of the present invention can be used not only for a rotary printing press but also for a packaging machine using continuous paper, for example.

According to the present invention, if the continuous paper is sent to the folding body without passing through the first and second reversing means, it is possible to perform normal-form folding, and the continuous paper is passed through the first and second reversing means. Then, if it is sent to the folding body part, reverse former folding can be performed. It is only necessary to provide two front and back reversing means on the upstream side and the downstream side of the former in the running direction of the continuous paper. Therefore, a simple structure and a small installation space are required. It is sufficient that the former is sent out to the former member after being turned over, so that one former member can be used without changing its direction.

In the present invention, the first and second reversing means are respectively provided with a pair of turn bars which are arranged at an angle of 45 ° with respect to the running direction of the continuous paper, and are arranged in parallel with the running direction of the continuous paper. And a rotatable guide roller, so that the continuous paper passing through one of the pair of turn bars is turned upside down when passing through the guide roller and passing through the other of the pair of turn bars. It is preferred that it is.

In the above, at least one guide roller is sufficient, and the length of the turn bar and the guide roller in the first front / back reversing means is preferably longer than the width of the continuous paper. It is preferable that the lengths of the turn bar and the guide roller in the reversing unit are longer than the width of the formerly folded continuous sheet.

According to the present invention, since the forward and reverse former folding can be performed by the first and second reversing means, it is not necessary to operate the former member. Can be used. In addition, since the first and second reversing means are provided with a pair of turn bars and guide rollers, a simple structure and a small installation space are required.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. In this embodiment, the same members and the same structure as those of the folding machine of the conventional printing press are denoted by the same reference numerals, and the description is omitted or simplified. As shown in FIGS. 1 and 2, a forward / reverse former folder 1 of a printing press according to the present embodiment includes a former member 3 that performs former folding of a web W.
The first front / back inversion means 2A is provided on the upstream side in the traveling direction, and the second front / back inversion means 2B is provided on the downstream side in the traveling direction. In addition, a folding drum portion 4 that performs horizontal folding of the formerly folded web W is provided on the downstream side in the traveling direction of the second front / back reversing means 2B.

First, the former member 3 and the folding drum section 4 will be described. The former member 3 is formed of a triangular plate member as described above, and is supported by a frame (not shown) on the base 15. The former member 3 is arranged such that the pointed end of the triangle is directed downstream and obliquely downward in the traveling direction of the web W, and is aligned with the center of the web W in the width direction. Therefore, since the web W moves along the triangle via the drag roller 59 while traveling, the left and right sides of the web W are turned inside, that is, turned to the back side, and are vertically folded from the center.

As shown in FIG. 2, below the former member 3, a pair of leading rollers 5 supported by a frame and guiding the web W to the folding drum section 4 side. A pair of nips 6A and 6B arranged in two stages are provided, respectively, and the web W that has passed through the pair of nips 6B in the lower stage is sent out to a folding drum unit 4 provided below these devices.

The folding drum section 4 has a pair of lower nippers 6B.
, And a web W1 that is provided with its axis parallel to the axis of the web W1 and that moves along the outer circumference of the web 7 and is cut by a cutter. Cylinder 9 forming signature 8
Then, the central part in the running direction of the signature 8 pushed up by the plunging spatula 10 of the plunging body 7 is bitten-folded (horizontal folding) by biting means 11 formed including a biting spatula and a biting jaw. )
And a torso cylinder 12 which is provided. The signature 8 that has been bitten and folded is placed on the transport table 13 from the bite cylinder 12 and, if necessary, chopper-folded by the chopper folding means 14 and then sent to a paper discharge device (not shown). ing.

As shown in FIGS. 1 to 3, the first reversing means 2A is provided with the web W of the former member 3 as described above.
Is provided on the upstream side in the traveling direction and near the former member 3, and is disposed in a space below the web W traveling laterally toward the former member 3. That is, the first and second guide rollers 20 and 21 that are orthogonal to the running direction of the web W and are parallel to each other are supported by a frame (not shown) and are provided so as to be rotatable and substantially horizontally.
A third guide roller 22 parallel to the guide rollers 20 and 21 is rotatably provided at a predetermined position downwardly away from the guide rollers 20 and 21 by being supported by a frame. I have.

At a substantially intermediate position between the first and second guide rollers 20, 21 and the third guide roller 22, a position closer to the first guide roller 20 than the third guide roller 22 is:
First perpendicular to each other and laterally separated in the longitudinal plane,
A pair of turn bars 25 constituted by two turn bars 26 and 27 are provided. These turn bars 26, 2
7 is 45 ° with respect to the running direction of the web W running on the second guide roller 20 and the third guide roller 22.
It is arranged with an inclination of.

Further, the first and second guide rollers 20 and 21
At a substantially intermediate position between the second guide roller 21 and the third guide roller 22, one side of the second guide roller 21 and the third guide roller 22 orthogonal to the running direction of the web W is provided with the second guide roller 21 and the third guide roller 22. One fourth guide roller 23 is provided in parallel with the running direction of the web W between the second guide roller 23 and the second guide roller 23. The fourth guide roller 23 is disposed at a position that is located between the first and second turn bars 26 and 27. The lengths of the first to fourth guide rollers 20 to 23 and the pair of turn bars 25 are larger than the width of the web W sent from the printing apparatus. Also,
The first to fourth guide rollers 20 to 23 and the pair of turn bars 25 are formed of, for example, an iron round bar member or a pipe member, and include and include the first to fourth guide rollers 20 to 23.
2A.

Therefore, when the front / back reversing means 2A is used, the web W sent from the printing apparatus side and passed through the first guide roller 20 moves toward the second turn bar 27, where it is 45 ° Change direction. This web W
Moves toward the first turn bar 26 along the outer periphery of the third guide roller 22, changes direction again by 45 ° with the turn bar 26, and moves to the second guide roller 21 along the outer periphery of the third guide roller 22, The second guide roller 21 is directed toward the former member 3 along the outer periphery of the second guide roller 21.

Now, in FIG. 3, the first guide roller 20
When the upper surface of the web W that reaches the first guide bar 20 is denoted by A and the lower surface of the web W is denoted by B, the web W travels from the first guide roller 20 to the fourth guide roller 23 via the second turn bar 27, and from the fourth guide roller 23 to the first turn bar 26. When the web W travels toward the second guide roller 21 via the third guide roller 22, the upper surface of the web W becomes A, and the web W is formed along the outer periphery of the second guide roller 21. When heading to 3, the upper surface of the web W is B. That is, the front and back are inverted by 180 °.

The web W sent from the printing apparatus side
When the web W is sent out to the former member 3 without reversing the front and rear sides of the former member 3 as shown by a two-dot chain line in FIG. This is performed by directly passing through the former member 3 via the drag roller 59 located on the front side.

As shown in FIGS. 2 and 3, the second front / back reversing means 2B is provided between the former member 3 and the folding body 4, more specifically, between the nips 6A and 6B arranged in two upper and lower stages. It is provided to protrude in the lateral direction. The second front / back inversion means 2B has substantially the same structure as the first front / back inversion means 2A, and a detailed description of the structure will be omitted. However, the second front / back reversing means 2B is for reversing the formerly folded web W1, and the width of the formerly folded web W1 is half the width of the web W reaching the former member 3, so that The lengths of the first to fourth guide rollers 20 'to 23' and the pair of turn bars 25 'constituting the front and back inversion means 2B are the same as those of the first to fourth guide rollers 20 to 20 constituting the first front and back inversion means 2A. 23,
And, it is formed shorter than the length dimension of the pair of turn bars 25. The second guide roller 21 'is arranged below the upper nip 6A.

In the second front / back reversing means 2B, the web W1 folded by the former member 3 is formed by the second side.
From the guide roller 21 'to the third guide roller 22', the first
, A fourth guide roller 23 ', and a second turn bar 27' to reach the first guide roller 20 '.

When the web W1 is not folded upside down, that is, when the web W1 is sent out to the folding body 4 as it is, the web W1 is folded as shown by a two-dot chain line in FIGS. , Without passing through the front / back reversing means 2B, directly from the upper nip 6A to the lower nip 6B.

Next, the operation of the present embodiment will be described. First, in the case where a web W on which a pattern is printed on a printing machine is required to be folded in a normal format due to imposition or the like, the web W sent from the printing apparatus side is converted into the first front / back inversion means 2.
A is sent directly to the former member 3 without passing through A. Then
The web W1 folded by the former member 3 is not passed through the second reversing means 2B, and the upper nip 6A is formed.
The paper is passed directly through the nip 6B below and sent out to the folding drum section 4 side. The web W is sent to the plunging cylinder 7 and is cut by the cutter of the cutting cylinder 9 to form a signature 8.
At the same time, the sheet is laterally folded (bitten-folded) by the bite cylinder 12 and sent to the carrier 13.

In the printing machine, when reverse former folding is required, the web W sent from the printing apparatus is passed through the first front / back reversing means 2A to reverse the front and back of the web W. To send to. Next, the web W1 folded by the former member 3 is passed from the upper nip 6A to the second front / reverse inverting means 2B to invert the front and back of the web W, from which the web W1 is folded via the lower nip 6B. It is sent to the body 4 side. The web W1 that has been reversed and the fold line has been turned in the opposite direction to the normal formal folding is
The sheet is sent to the plunging cylinder 7 and is cut by the cutter of the cutting cylinder 9 to form a signature 8 in an inverse former folding mode.

According to the present embodiment, the following effects can be obtained. That is, if the web W is sent out to the folding body part 4 without passing through the first and second front / reverse inversion means 2A and 2B, it is possible to perform normal-form folding, and the web W is passed through the first and second front / back inversion means 2A and 2B. If it is sent out to the folding body part 4, the reverse former folding can be performed. By simply providing the two front and back reversing means 2A and 2B on the upstream and downstream sides in the running direction of the continuous paper of the former, the forward / reverse former folding can be performed, so that a simple structure and a small installation space are required.

The first and second reversing means 2A, 2B
In this case, it is not necessary to operate the former member 3, so that one former member can be used without changing its direction.

Further, the first front / back reversing means 2A includes a pair of turn bars 25 and first to fourth guide rollers 20 to 23,
The second front / back reversing means 2B is formed to include a pair of turn bars 25 'and first to fourth guide rollers 20' to 23 ', respectively. These may be rod-shaped members having predetermined external dimensions. Is simpler and requires less installation space.

Further, the folding drum section 4 of the present invention requires only one half of the pair of folding drums in the conventional first type forward / reverse former folder, and also has half the driving mechanism related to the folding drum. Thus, the time required for adjustment, maintenance and inspection of the needle device, plunging spatula, biting means, etc. attached to each folding cylinder is greatly reduced.

The first and second reversing means 2A, 2B
May be passed or not passed. For example, when the web W is not passed through both the first and second reversing means 2A and 2B as described above,
A when passing through both A and 2B, when passing through only the first front / back inversion means 2A, and when passing through only the second front / back inversion means 2B.
It is possible to fold the street, and it has become a valuable folding machine.

Further, since the first front-back reversing means 2A is provided in a space below a line connecting the printing apparatus side and the former member 3, the height of the entire folding machine is reduced due to the reversing means 2A. It will not be high.

The present invention is not limited to the above embodiment, but includes the following modifications as long as the object of the present invention can be achieved. That is,
In the embodiment, the first front / back reversing means 2A includes a pair of turn bars 25 and first to fourth guide rollers 20 to 23, and the second front / back reversing means 2B includes a pair of turn bars 25 'and first to fourth guide rollers. 20 ′ to 23 ′, but the configuration of both means 2A and 2B is not limited to this.
A structure including a pair of turn bars and one guide roller parallel to the running direction of the web may be employed. in this case,
What is necessary is just to let the web which goes to the former member from the printing press side, or the web folded by the former directly pass through a pair of turn bars. In this modification, the same operation and effect as those of the above embodiment can be obtained.

[0042]

As described above, according to the forward / reverse former folder of the printing press of the present invention, continuous paper can be sent out to the folding drum without passing through the first and second reversing means. If it is forward-form folded, it can be reversed-form folded if it is sent to the folding body via the first and second reversing means. Therefore, it is only necessary to provide two front and back reversing means on the upstream side and the downstream side in the running direction of the continuous paper of the former, so that a simple structure and a small installation space are required. Is inverted and then sent to the former member, so that one former member can be used without changing its direction. Further, since only one folding cylinder is required, the labor required for adjustment, maintenance and inspection, etc. of the needle device, plunging spatula, biting means, etc. associated with each folding cylinder can be greatly reduced.

[Brief description of the drawings]

FIG. 1 is an overall plan view showing a forward / reverse former folder of a printing press according to an embodiment of the present invention.

FIG. 2 is an overall side view illustrating a forward / reverse former folder of the printing press according to the embodiment.

FIG. 3 is a perspective view showing a main part of a forward / reverse former folder of the printing press according to the embodiment.

FIG. 4 is an overall plan view showing a former folding machine according to a first conventional example of the present invention.

FIG. 5 is an overall side view showing a second conventional folding machine of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Forward / reverse former folding machine 2A 1st front / back reversing means 2B 2nd front / back reversing means 3 Former member 4 Folding body part 20-23 First 1-4 guide rollers 25 A pair of turn bars 26 First turn bar 27 Second Turn bar W Web (continuous paper) W1 Formal folded web

Claims (2)

[Claims] 1. A forward / reverse former folder of a printing machine for performing forward / reverse former folding of a continuous sheet on which a pattern is printed by a printing device, comprising: one former member for formerly folding the continuous sheet; A first reversing means provided on the upstream side of the former member in the running direction of the continuous paper and capable of reversing the front and back of the continuous paper; and a downstream side of the former member provided on the downstream side in the running direction of the former member. A second reversing means capable of reversing the folded continuous sheet, a continuous sheet which is provided further downstream than the second reversing means in the traveling direction, and which is forma-folded by the former member; And a folding body portion for horizontally folding continuous paper that has passed through the second front / reverse inversion means after being formerly folded by a member. Forward and reverse former folding machine of the printing press. 2. The forward / reverse former folder of a printing press according to claim 1, wherein each of said first and second front / reverse inversion means is 45 ° with respect to a running direction of said continuous paper.
A pair of turn bars arranged at an angle, and a rotatable guide roller arranged in parallel to the running direction of the continuous paper, is configured, and the continuous paper via one of the pair of turn bars, A front / reverse former folding machine for a printing press, wherein the front and back sides are reversed when passing through the guide roller and passing through the other of the pair of turn bars.