JP2023010361A - Turret device - Google Patents

Abstract

To provide a turret device which is easy to handle by simple means.SOLUTION: A roll position adjustment mechanism 60 capable of adjusting the position of the rolls supported by a first roll support part 40A and a second roll support part 40B is provided. The roll position adjustment mechanism 60 includes a first roll slide mechanism 51A provided on the first roll support part 40A and a first operation part 52A for operating it, and a second roll slide mechanism 51B provided on the second roll support portion 40B and a second operating part 52B for operating it. And a third operation part 65 for operating the first roll slide mechanism 51A is provided on the second roll support part 40B, a fourth operation part 66 for operating the second roll slide mechanism 51B is provided on the first roll support part 40A.SELECTED DRAWING: Figure 2

Description

The technology disclosed relates to a turret device for winding or unwinding a web.

A turret device is used, for example, in a system that performs printing or coating in a roll-to-roll system, and continuously unwinds a web from a roll or continuously winds the web into a roll. do. Examples of turret devices are disclosed in US Pat.

Generally, the turret unit is configured so that both the old and new rolls can be replaced continuously without stopping the operation of the system. That is, the turret device is provided with a pair of turret arms facing each other and rotatably pivoted at the center, and is constructed so that two rolls, new and old, can be supported between each end of these turret arms. It is

When the system is in operation, the end of the turret arm supporting the old roll being used is placed in a predetermined use position in close proximity to the system. On the other hand, the end of the turret arm supporting the new roll is placed in a predetermined exchange position, close to the work space, opposite the use position.

For example, in the turret device on the unwinding side, when the old roll runs out of web, the turret arm rotates and the positions of the new and old rolls are exchanged. Then, the leading end of the web of the new roll is overlaid on the unwound web of the old roll. At the same time, the web of the old roll is cut at the portion closer to the old roll than the bonding position.

As a result, the front end of the new roll is spliced to the end of the unwound web of the old roll, so that the old and new rolls can be continuously replaced.

When splicing the two webs of the old and new rolls, it is necessary to adjust the position of the new roll in the TD direction with respect to the web of the old roll so that both webs do not shift in the width direction (the so-called TD direction).

On the other hand, in Patent Document 1, the edge of the web of the old roll and the edge of the new roll are photographed with a camera, and the position of the new roll in the TD direction is adjusted by operating the handle while viewing the image on the monitor. A technique for doing so is disclosed. Further, Patent Document 3 discloses a technique of automatically performing such position adjustment by using a plurality of sensors and a control device.

JP 2018-188257 A JP 2013-227093 A JP-A-6-171067

The technique of Patent Document 3 has a large number of members and a complicated structure. Moreover, it is difficult to put it into practical use because the manufacturing cost is high. In that respect, the technique of Patent Document 1 has a simple structure because the position of the new roll is adjusted by operating the handle, and in order to check the degree of misalignment, the web is conveyed and the pressing roll, cutter, etc. are also operated. There is no need to peek into the operating area to be used. Therefore, the position of the new roll can be adjusted easily and safely. Practical use is also easy.

However, as will be described later, the technique of Patent Document 1 has the disadvantage of being difficult to operate and lacking workability because the handle must be operated on the side of the use position. In addition, it was necessary to install cameras and monitors and adjust their positions, and there was room for improvement in that respect as well.

Therefore, the technology disclosed realizes an easy-to-handle turret device with simple means.

The disclosed technique relates to a turret apparatus attached to a system for continuously processing a transported web and for winding or unwinding the web by exchanging rolls of the web.

The turret device includes a pair of turret arms that are rotatably supported about a rotating shaft that extends in the left and right direction while being opposed to each other in the left and right direction, and the roll is rotatable between each of the tip portions of the pair of turret arms. A first roll supporting portion and a second roll supporting portion that are detachably supported, and a roll position adjustment capable of adjusting the positions of the rolls supported by the first roll supporting portion and the second roll supporting portion in the horizontal direction. a mechanism;

By rotating the pair of turret arms, each of the first roll support and the second roll support can be held at either a use position close to the system or a replacement position away from the system. ing.

The roll position adjustment mechanism is provided in the first roll support section and is provided in the first roll support section, and a first roll slide mechanism capable of sliding the roll supported by the first roll support section in the left-right direction. and a second roll slide mechanism that is provided on the second roll supporter and capable of sliding the roll supported by the second roll supporter in the left-right direction. and a second operation portion provided on the second roll support portion for operating the second roll slide mechanism.

Together with these, a third operating section provided on the second roll support section for operating the first roll slide mechanism, and a fourth operating section provided on the first roll support section for operating the second roll slide mechanism. and an operation unit.

That is, in the roll position adjusting mechanism of this turret device, the first roll slide mechanism for adjusting the position of the roll supported by the first roll support portion and the first operation portion for operating the same are provided on the first roll support portion. ing. Similarly, a second roll slide mechanism for adjusting the position of the roll supported by the second roll support and a second operating section for operating it are provided on the second roll support.

Therefore, as in the unwinding device of Patent Document 1 described above, the positions of the rolls supported by the individual roll support portions can be adjusted by operating the operating portions provided on the individual roll support portions. However, with this configuration, when adjusting the position of the roll located at the use position close to the system, the operation section must be operated on the use position side. Therefore, the work is difficult and it is difficult to check the degree of deviation of the roll position.

On the other hand, in the roll position adjusting mechanism of this turret device, a third operating section for operating the first roll slide mechanism is further provided on the second roll supporting section, and a fourth operating section for operating the second roll slide mechanism is provided. It is provided on the first roll support.

That is, the position of the roll can be adjusted by operating an operation section provided on a roll support section different from the roll support section that supports the roll. Accordingly, positional adjustment of the roll positioned at the use position can be performed by operating the operating portion on the side of the working position.

As a result, it is possible to adjust the deviation while visually observing the deviation of the roll position in a space where the work is easy. Therefore, it is easy to handle and excellent in workability.

In the turret device, each of the first operating section, the second operating section, the third operating section, and the fourth operating section may be configured by a handle.

If it is a handle, it is operated manually, so it can be realized with a relatively simple structure and at a low cost.

The turret device is also configured such that the two handles of the first operating part and the third operating part and the two handles of the second operating part and the fourth operating part are connected to a pair of pulleys and to these pulleys. They may be connected via a transmission mechanism including an endless belt that is stretched over them, and configured to be rotatable in synchronization with each other.

Such a configuration can be realized by extending the existing structure. Therefore, it can be put into practical use inexpensively and efficiently. It is easy to handle because it can be operated in the same way as the existing operation.

The turret device is also configured such that the two handles of the first operating section and the fourth operating section and the two handles of the second operating section and the third operating section are connected to one of the pair of turret arms. It may be arranged in a state adjacent to the vicinity of the tip of the.

In this way, the rolls supported on both roll supports can be manipulated without significant movement. In addition, it is possible to appropriately visually check the deviation of the roll position within the range where the operation portion can be manually operated. Therefore, since the roll position adjustment work can be performed efficiently, workability is improved.

According to the turret device to which the disclosed technique is applied, the deviation between the web and the roll can be adjusted while visually checking the deviation between the web and the roll in a space where the work is easy. Therefore, it is easy to handle and excellent in workability.

1 (Prior Art) is a schematic cross-sectional view of a turret apparatus prior to application of the disclosed technology; FIG. It shows the state during the roll switching work. 2 (Prior Art) is a schematic top view of the turret apparatus shown in FIG. 1; FIG. (Prior Art) FIG. 2 is a schematic diagram showing a roll position adjustment mechanism of the turret apparatus shown in FIG. 1; 1C is a schematic top view of the improved turret apparatus after application of the disclosed technology, corresponding to FIG. 1B; FIG. FIG. 1D is a schematic diagram showing the roll positioning mechanism of the modified turret apparatus, corresponding to FIG. 1C; FIG. 4 is a schematic top view of the roll position adjustment mechanism of the improved turret device; FIG. 10 is a diagram for explaining the mechanism of the roll position adjustment mechanism of the improved turret device;

Embodiments of the disclosed technology will be described below with reference to the drawings. However, the following description is an example. Up/down, left/right, and front/rear directions used in the description are based on the turret apparatus in a normal state, as indicated by arrows in FIGS. 1A and 1B.

<Conventional turret device>
1A and 1B show a turret apparatus 1 (prior art) before applying the disclosed technology. The turret device 1 is a device that supports a roll (hereinafter simply referred to as a roll) formed by winding a web W made of a plastic sheet, film, or the like around a core.

The turret device 1 is configured to continuously wind up or unwind the web W by switching between two new and old rolls Ro and Rn, which will be described later. FIG. 1A and FIG. 1B show the state at the time of switching work for switching between the two new and old rolls Ro and Rn.

This turret device 1 is a turret device on the unwinding side. The basic structure of the turret device 1 is the same as the unwinding device of Patent Document 1 described above. The turret device 1 is attached to each end of the entrance side and the exit side of a predetermined system 2 for continuously performing processes such as printing and coating on the web W conveyed by a roll-to-roll method. Used.

The turret device on the winding side (so-called winding device) also has the same basic structure as the turret device 1 except for the difference in whether the web W is wound up or unwound. Therefore, the turret device 1 on the unwinding side will be described here, and the description on the turret device on the winding side will be omitted.

The turret device 1 is composed of a rotating body 3, a drive-side support base 4, a driven-side support base 5, and the like. The turret device 1 is positioned in close proximity to the front of the inlet end of the system 2 . A guide roller 2a extending in the left-right direction is installed at the end of the system 2 on the entrance side. The web W unwound from the turret device 1 is guided into the system 2 by being wound around the guide roller 2a.

Between the inlet side end of the system 2 and the turret device 1, similarly to the unwinding device of Patent Document 1, there is provided a roll switching mechanism having a pressing roll, a cutting edge, and the like used when replacing the old and new rolls. However, illustration and description thereof are omitted.

The rotating body 3 includes a pair of turret arms 30, 30, a shaft 31, a pair of roll support portions 40, 40, an auxiliary roller 32, a roll position adjusting mechanism 50, and the like. A drive-side support base 4 is installed at a position adjacent to the left side of the rotating body 3 . A driven-side support base 5 is installed at a position adjacent to the right side of the rotating body 3 .

Each turret arm 30 is made of a band plate-like member, and is opposed to the left and right with a predetermined gap, and is connected at the longitudinal central portion of the opposing surface by a strut 33 extending in the left and right direction. The shaft 31 extends in the left-right direction through the inside of the support 33 , and both ends of the shaft 31 protrude through the turret arm 30 .

Both ends of the shaft 31 projecting from each turret arm 30 are pivotally supported by the driving-side support base 4 and the driven-side support base 5 . As a result, the rotating body 3 including the pair of turret arms 30, 30 is rotatable about the rotating shaft J extending in the left-right direction.

An operation panel 4 a for operating the turret device 1 is provided on the upper front side of the drive-side support table 4 . Inside the drive-side support base 4 , although not shown, a control device and a drive mechanism for rotating the shaft 31 are provided. When the operator S operates the operation panel 4a, the rotating body 3 rotates, and the turret device 1 cooperates with the roll switching mechanism to perform a predetermined switching process.

Note that, as shown in FIG. 1A, the area on the front side of the turret device 1 away from the system 2 serves as a work space for the operator S to operate the turret device 1 and the like.

A pair of roller arms 34 , 34 extending in opposite directions perpendicular to the turret arm 30 are provided at the central portions of both longitudinal end surfaces of each turret arm 30 . Auxiliary rollers 32 are rotatably supported on the tip portions of the roller arms 34, 34, respectively.

Each of the pair of roll supports 40, 40 is provided at the tip of the pair of turret arms 30, 30. As shown in FIG. The basic structure of each roll support portion 40 is the same as that of the unwinding device of Patent Document 1 described above.

Specifically, a first support mechanism 41 having a gear case 41a, a first support shaft 41b, and the like is provided on the left turret arm 30 on which the drive-side support base 4 is located. A second support mechanism 42 having a cylinder 42a, a second support shaft 42b, and the like is provided on the right turret arm 30 on which the driven-side support table 5 is positioned. Two rolls are rotatably and detachably supported between the tip end portions of the pair of turret arms 30, 30 by the roll support portions 40, respectively.

Rotation of the rotating body 3 causes each of the roll supports 40 to be held at either a predetermined position (use position) close to the system 2 or a predetermined position (replacement position) away from the system 2 . A roll supporter 40 that supports a roll (referred to as an "old roll Ro") that unwinds the web W to the system 2 during operation is held at a use position.

At this time, the other roll support portion 40 is held at the replacement position facing the work space. Therefore, an unused roll (referred to as a "new roll Rn") can be supported by the roll support portion 40 at the replacement position, so that the new roll Rn can be mounted safely and easily.

When the old roll Ro is switched to the new roll Rn while the system 2 is in operation, the rotating body 3 is rotated so that the positions of the new and old rolls Ro and Rn are interchanged. Thereby, as shown in FIGS. 1A and 1B, the new roll Rn is held on the use position side, and the old roll Ro is held on the replacement position side. The web W on the old roll Ro is supported by the auxiliary rollers 32 to maintain its conveying state.

Then, the roll switching mechanism is activated, and a predetermined switching process is performed to switch the web W to be conveyed to the system 2 from the web W of the old roll Ro to the web W of the new roll Rn. After the switching process is completed, the core of the old roll Ro is removed, and the switching operation is completed. In addition, since the work for removing the winding core can be done in the work space, it can be done safely and easily.

(Position adjustment work for the new roll)
When switching between the old and new rolls Ro and Rn, the web W unwound from the old roll Ro to the system 2 and the web W wound around the core of the new roll Rn are separated in the left and right width direction (so-called It is necessary to perform alignment in the TD direction).

Therefore, each roll supporting portion 40 is provided with a roll position adjusting mechanism 50 .

The roll position adjustment mechanism 50 is shown in FIG. 1C. The basic structure of the roll position adjusting mechanism 50 is the same as that of the unwinding device of Patent Document 1 described above.

Specifically, a rack gear, a pinion gear, a worm wheel, a worm shaft 53, and the like are housed inside the gear case 41a, and these constitute a roll slide mechanism 51 for sliding the first support shaft 41b. . A handle 52 is provided on the outside of the gear case 41a for operating a roll slide mechanism 51 therein.

Worm shaft 53 is arranged to extend along turret arm 30 . The handle 52 is arranged on the tip end side of the turret arm 30 while being attached to the tip end of the worm shaft 53 .

With the roll supported by the first support shaft 41b and the second support shaft 42b of one of the roll support portions 40, when the handle 52 provided on the roll support portion 40 is rotated, the first support shaft 41b is rotated. , toward the second support shaft 42b, and the second support shaft 42b is displaced accordingly. Thereby, the roll slides to the left and right, and the position of the roll in the left and right direction can be adjusted.

By the way, when performing such roll position adjustment work, the operator S needs to operate the handle 52 of the roll support section 40 that supports the new roll Rn. As shown in FIG. 1B, during the switching operation for adjusting the position of the rolls, the new roll Rn is positioned at the use position, so the handle 52 cannot be operated in the work space.

The operator S has to enter the empty space between the system 2 and the turret device 1 and operate the handle 52 . On the other hand, it is determined that the deviation between the web W of the old roll Ro and the web W of the new roll Rn should not be checked from the direction perpendicular to the width direction of both webs W, such as directly above the web W as shown in FIG. 1B. is difficult. If you do not force yourself to look into the empty space, it is difficult to visually observe from such a direction, so the degree of deviation cannot be properly confirmed.

Therefore, in the unwinding device of Patent Document 1 described above, the degree of deviation is photographed by a camera, and the handle 52 can be operated while viewing the image on a monitor. However, as described above, since the handle 52 must be operated in an empty space on the side of the use position, it is difficult to operate and lacks workability. In addition, it is necessary to install cameras and monitors and adjust their positions, and there is room for improvement in this respect as well.

<Turret device to which disclosed technology is applied>
FIG. 2 shows a turret device 1 (improved turret device 1N) improved by applying the disclosed technology to the conventional turret device 1 described above.

The basic configuration of the improved turret device 1N is the same as the conventional turret device 1 described above. Therefore, the same reference numerals are used for the same configurations, and descriptions thereof are omitted, and different configurations are specifically described. The improved turret device 1N differs from the conventional turret device 1 in the roll position adjusting mechanism.

(New roll position adjustment mechanism)
In the conventional turret device 1 , the roll position adjusting mechanism 50 is attached to each roll support portion 40 , and the roll supported by the roll support portion 40 is adjusted by operating the handle 52 provided on the roll support portion 40 . position was adjusted.

On the other hand, in the improved turret device 1N, a roll position adjusting mechanism (improved roll position adjusting mechanism 60) is attached over both roll support portions 40. As shown in FIG.

Specifically, in addition to the roll slide mechanism 51 (51A, 51B) and the handle 52 (52A, 52B) attached to each roll support portion 40, the other roll support portion 40 is attached to the roll support portion 40. Handles 65 and 66 are provided for operating the roll slide mechanism 51 attached to the . Thereby, in the improved turret device 1N, the position of the new roll Rn can be adjusted from the side of the roll supporter 40 different from the roll supporter 40 supporting the new roll Rn.

The new and improved roll alignment mechanism 60 is shown in FIGS. For convenience of explanation, when distinguishing between the two roll support portions 40, 40, these are referred to as a first roll support portion 40A and a second roll support portion 40B. The existing configurations related to these are similarly distinguished by using the first and second prefixes and the symbols A and B as appropriate.

Improved roll alignment mechanism 60 includes conventional roll alignment mechanism 50 . That is, the improved roll position adjustment mechanism 60 is provided in the first roll slide mechanism 51A and the first handle 52A (first operating portion) provided in the first roll support portion 40A, and in the second roll support portion 40B. It includes a second roll slide mechanism 51B and a second handle 52B (second operating portion).

A pulley case 55 attached to the end of the turret arm 30 in a cantilever manner is installed outside the first roll support portion 40A. A pulley case 55 attached to the end of the turret arm 30 in a cantilever manner is also installed outside the second roll support portion 40B.

A second bearing pair 62, 62 consisting of two second bearings 62 is newly provided on the upper side of the pulley case 55 of the first roll support portion 40A and the outside of the pulley case 55 of the second roll support portion 40B. there is Then, symmetrically with the first bearing pair, a first bearing pair consisting of two first bearings 61 is provided outside the pulley case 55 of the first roll support portion 40A and under the pulley case 55 of the second roll support portion 40B. 61, 61 are newly provided.

A first transmission shaft 63 extending along the turret arm 30 is rotatably supported by the first bearing pair 61 , 61 . A second transmission shaft 64 extending along the turret arm 30 is rotatably supported in the second bearing pair 62 , 62 .

A third handle 65 (third operating portion) is attached to the end portion of the first transmission shaft 63 protruding from the first bearing 61 arranged on the side of the second roll support portion 40B. A fourth handle 66 (fourth operating portion) is attached to the end of the second transmission shaft 64 protruding from the second bearing 62 arranged on the side of the first roll support portion 40A.

Thereby, as shown in FIG. 3, the fourth handle 66 is positioned adjacent to the first handle 52A and configured to be operated in the same manner as the first handle 52A, except for the position. Similarly, the third handle 65 is also positioned adjacent to the second handle 52B and configured to be operable in the same manner as the second handle 52B except for its position.

On the other hand, a driven pulley 67 is provided at each of the end of the first transmission shaft 63 supported by the other first bearing 61 and the end of the second transmission shaft 64 supported by the other second bearing 62 . installed. These driven pulleys 67 are arranged at positions close to the first handle 52A or the second handle 52B. A drive pulley 68 is newly attached to each of the worm shafts 53 to which these handles 52A and 52B are attached.

Driven pulley 67 and drive pulley 68 are configured to the same diameter. The driven pulley 67 and driving pulley 68 are housed in the pulley case 55 . A transmission mechanism is constructed by winding an endless belt 69 around the drive pulley 68 and the driven pulley 67 that are adjacent to each other.

Specifically, the endless belt 69 is stretched between the drive pulley 68 of the worm shaft 53 to which the first handle 52A is attached and the driven pulley 67 attached to the end of the first transmission shaft 63. A first transmission mechanism is configured. Thereby, the first handle 52A is connected with the third handle 65 via the first transmission mechanism, the first transmission shaft 63 .

An endless belt 69 is stretched between a drive pulley 68 of the worm shaft 53 to which the second handle 52B is attached and a driven pulley 67 attached to the end of the second transmission shaft 64, thereby operating the second transmission mechanism. It is configured. Thereby, the second handle 52B is connected with the fourth handle 66 via the second transmission mechanism, the second transmission shaft 64 .

Accordingly, when the third handle 65 arranged on the side of the second roll support portion 40B is rotated, the first roll slide mechanism 51A of the first roll support portion 40A is operated and the first handle 52A is synchronized therewith. to rotate. When the fourth handle 66 arranged on the side of the first roll support portion 40A is rotated, the second roll slide mechanism 51B of the second roll support portion 40B operates and the second handle 52B rotates in synchronization therewith. do.

Thus, in the improved turret device 1N, the position of the new roll Rn can be adjusted from the side of the roll supporter 40 different from the roll supporter 40 supporting the new roll Rn. Therefore, according to the improved turret device 1N, the operator S can adjust the position of the new roll Rn in the work space.

That is, when performing the position adjustment work of the new roll Rn, the operator S goes to the vicinity of the roll support portion 40 (first support shaft 41b) positioned at the replacement position, and the web W of the old roll Ro is moved to the new roll Rn. The newly installed handle (the third handle 65 or the fourth handle 66) can be operated by standing in front of the portion overlying the end of the web W of the web.

The deviation of the webs W of the old and new rolls Ro and Rn can be easily visually recognized from the direction orthogonal to the width direction of both webs W. Therefore, the deviation degree of the web W can be determined appropriately. Then, the position of the new roll Rn can be adjusted by operating the handle (the handle 66 in the illustrated example) while visually judging the degree of displacement of the web W. Therefore, the position of the new roll Rn can be adjusted very easily and accurately. Since the position adjustment work of the new roll Rn can be performed in the work space, workability is excellent and safety can be improved.

Note that the technology disclosed is not limited to the above-described embodiments, and includes various other configurations. For example, the first operating portion of the handle is inexpensive and easy to handle, but the first operating portion is not limited to the handle. If the roll slide mechanism is composed of a linear type actuator, the first operation section and the like may be buttons and the like.

The operation of the first roll slide mechanism by the third operation section and the operation of the second roll slide mechanism by the fourth operation section are not limited to the method using the transmission mechanism described above. It may be made operable by an electrical connection. The worm shaft 53 may be extended to the other roll support portion 40 and the third handle 65 or the like may be directly connected to the end thereof. The structure of the roll position adjusting mechanism can be changed as appropriate according to specifications.

1N improved turret device 2 system 2a guide roller 3 rotating body 4 driving side support 4a operation panel 5 driven side support 30 turret arm 31 shaft 32 auxiliary roller 40 roll support 40A first roll support 40B second roll support 52A First handle 52B Second handle 60 Improved roll position adjustment mechanism 61 First bearing pair 62 Second bearing pair 63 First transmission shaft 64 Second transmission shaft 65 Third handle 66 Fourth handle J Rotation axis W Web Ro Old roll Rn new roll

Claims (4)

A turret device attached to a system for continuously processing a conveyed web for winding or unwinding the web by exchanging rolls of the web,
a pair of turret arms rotatably supported around a rotating shaft extending in the left and right while facing each other in the left and right;
a first roll supporter and a second roll supporter that rotatably and detachably support the roll between the tip ends of the pair of turret arms;
a roll position adjustment mechanism capable of laterally adjusting the position of the roll supported by each of the first roll support portion and the second roll support portion;
with
By rotating the pair of turret arms, each of the first roll support and the second roll support can be held at either a use position close to the system or a replacement position away from the system. ,
The roll position adjustment mechanism is
a first roll slide mechanism provided in the first roll support portion and capable of sliding the roll supported by the first roll support portion in the left-right direction;
a first operation portion provided on the first roll support portion for operating the first roll slide mechanism;
a second roll slide mechanism provided in the second roll support portion and capable of sliding the roll supported by the second roll support portion in the left-right direction;
a second operation portion provided on the second roll support portion for operating the second roll slide mechanism;
and
a third operation portion provided on the second roll support portion for operating the first roll slide mechanism;
a fourth operation portion provided on the first roll support portion for operating the second roll slide mechanism;
a turret device further comprising: The turret apparatus of claim 1, wherein
A turret device, wherein each of the first operating section, the second operating section, the third operating section, and the fourth operating section is configured by a handle. A turret apparatus according to claim 2, wherein
The two handles of the first operating section and the third operating section, and the two handles of the second operating section and the fourth operating section are connected to a pair of pulleys and an endless belt stretched over these pulleys. and a turret device configured to be rotatable in synchronization with each other. In the turret apparatus according to claim 2 or 3,
The two handles of the first operating section and the fourth operating section and the two handles of the second operating section and the third operating section are located near one tip of the pair of turret arms. A turret device placed side by side.

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