JP6546601B2 - Processing machine line - Google Patents

Description

  BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to a processing machine line including a work transfer device which is constituted by a plurality of processing machines and which transfers a work to and from the processing machine.

  A processing machine line for performing a series of processing by a plurality of machine tools etc. is equipped with a work transfer device for transferring a work to each machine tool. The workpiece transfer device is capable of moving to each delivery position so that the workpiece can be delivered to and from the machine tool. For example, a processing machine line provided with a work transfer device is disclosed in Patent Document 1 below. In this machining machine line, the box-like housing is partitioned in the front-rear direction by the partition wall, and the back space is a processing chamber in which the processing of the workpiece is performed, and the workpiece conveyance device transports the workpiece in the front space It is a transfer room. In the housing, a door that opens to the left and right is formed on the front surface portion to allow opening of the transfer chamber, and a door that opens to the left and right is formed in the partition wall between the processing chamber and the processing chamber. It is possible to open it.

Unexamined-Japanese-Patent No. 5-111802

  However, in the case of performing maintenance on the processing chamber, the worker outside the housing has the transfer chamber between the processing chamber and the processing machine line mentioned above, so the distance to the object becomes long. There is. Therefore, the worker had to extend the hand and work on the object at a distant position, which made the work difficult. On the other hand, an operator may enter the transfer chamber to get close to the object, but it is difficult for the worker to get in from the door of the housing, and the transfer chamber has a poor working efficiency because the work space is narrow.

  Then, this invention aims at providing a processing machine line which is easy to work in a processing chamber in order to solve this subject.

A processing machine line according to one aspect of the present invention includes a plurality of processing modules that perform predetermined processing on a workpiece, and a workpiece transfer device that transfers a workpiece between the processing modules, and surrounds the processing module. A front cover surrounding the work transfer device is provided at the front of the exterior cover, the front cover is divided up and down by an upper cover and a lower cover, and the upper cover is a processing portion with the processing module The lower cover is displaceably supported on the side, and the lower cover is provided with a caster that enables traveling and is detachable from the processing unit side.

  According to the present invention, since the front cover is configured to be opened and closed by the upper cover and the lower cover, the operator can easily reach the inside of the transfer chamber formed by the front cover by opening the front cover. It is possible to carry out operations such as maintenance and parts replacement at a position close to the processing room.

1 is a perspective view showing an embodiment of a processing machine line. It is a perspective view showing a processing module which is an internal structure of a machine tool. It is the perspective view which showed the workpiece conveyance apparatus provided in the front cover. It is a perspective view in the state where the front cover was closed showing the machine tool which constitutes the processing machine line. It is a perspective view in the state where the front cover was opened showing the machine tool which constitutes the processing machine line. It is the figure which showed the internal side of the processing machine line which opening and closing of the front cover is an intermediate state. It is the perspective view which showed the upper cover from the back side. It is the perspective view which showed the lower cover from the back side. It is a bottom view showing a lower cover. It is a side view showing a locking mechanism, and an unlocking state (A) and a locking state (B) are shown.

  Next, an embodiment of a processing machine line according to the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing a processing machine line of the present embodiment. The machine tool line 1 has six machine tools 5 mounted on a base 2 as a base. The six machine tools 5 are all NC lathes of the same type, and their outer shapes and dimensions are uniform. Further, the machining machine line 1 is provided with a work transfer device for delivering a work to each of the machine tools 5.

  Here, the term "machining machine line" refers to a group of machining machines in which workpieces are delivered to a plurality of machining machines such as machine tools by a workpiece transfer device, and predetermined machining is performed on the workpieces in each machining machine. Say In the processing machine line 1 of the present embodiment, six machine tools 5 are arranged in proximity in the width direction (Y-axis direction) as illustrated. However, the processing machine line may include not only a combination of the same models but also machine tools of different models (lathes, drilling machines, boring machines, milling machines, gear cutting machines, cutting machines, etc.) . And it is possible to perform layout change of the model, the number, etc. by various patterns according to processing contents.

  FIG. 2 is a perspective view showing a processing module 3 which is an internal structure of the machine tool 5, in which the processing module 3 is mounted on a carriage 9 and pulled out to the rear of the base 2. In the machine tool 5, the processing module 3 is mounted on the base 2, and a portion processed by the processing module 3 is covered by the exterior cover 6 shown in FIG. 1. Although only one processing module 3 is shown in FIG. 2, two processing modules 3 can be mounted on the base 2. Therefore, two rails 201 are provided on the base 2 in accordance with the width of the processing module 3. Then, the processing module 3 has wheels 301, and is mounted on the base 2 in a state where it can travel on the rails 201 by itself.

  The processing machine line 1 is provided with a front cover 7 on the front side shown in FIG. 1, that is, on the front side of the exterior cover 6, and the work transfer device 4 shown in FIG. The exterior cover 6 surrounds the processing module 3 of each machine tool 5, and a processing room closed inside the machine tool 5 is configured inside. On the other hand, one space communicating in the Y-axis direction is formed in the interior covered by the plurality of front covers 7. That is, one transfer chamber in which the work transfer device 4 can move in the direction in which the machine tools 5 are arranged (Y-axis direction) is configured.

  FIG. 3 is a perspective view showing the work transfer apparatus 4 provided in the front cover 7, which is shown mounted on the base 2. The workpiece transfer device 4 is shown in a state in which the articulated robot arm 11 is folded and capable of traveling and turning. In the articulated robot arm 11, an upper arm member 111 and a forearm member 112 are configured via joint mechanisms 115 and 116. The articulated robot arm 11 is driven to move the upper arm member 111 and the forearm member 112 as illustrated to the side of the processing module 3 (not shown) present on the right side of the drawing by driving the joint mechanisms 115 and 116. It can be deformed into an extended state. A robot hand 113 is provided at the tip of the forearm member 112 to enable gripping and releasing of the work. The articulated robot arm 11 is attached to the turning table 12 via a joint mechanism 115, and the turning table 12 is mounted on the carriage 13 via the turning mechanism.

  A rail member 15 for guiding the carriage 13 is provided on the front of the base 2. In the rail member 15, a plate-like rail base 21 is attached to the front portion of the base 2, and a rack and two traveling rails are vertically arranged and fixed to the rail base 21. The traveling table 13 has two traveling sliders which slide in a state of grasping the traveling rails and fixed at the top and bottom, and further, is mounted with a traveling motor for providing rotation to a pinion engaged with the rack. Accordingly, the pinion rolls on the rack by the drive of the traveling motor, and the traveling slider slides on the traveling rail, whereby the traveling base 13 and the articulated robot arm 11 move in the Y-axis direction.

  By the way, as for the processing machine line 1, the workpiece conveyance apparatus 4 is arrange | positioned at the front part similarly to a prior art example. Therefore, when the operator puts his hand in the processing chamber to perform work, the transport chamber is on the front side and does not approach the processing module 3 as it is. Therefore, in the present embodiment, the operator is brought close to the processing chamber by opening and closing the front cover 7. 4 and 5 are perspective views showing the machine tool 5 (for two machines mounted on the base 2) constituting the processing machine line 1, and FIG. 4 is a state in which the front cover 7 is closed, In FIG. 5, the front cover 7 is in the open state. FIG. 6 is an internal side view of the processing machine line 1 showing an intermediate state when the front cover 7 is opened and closed. In addition, the rail member 15 originally attached to the front surface part of the base 2 is abbreviate | omitted in FIG. 4 thru | or FIG.

  The front cover 7 is divided into upper and lower parts, and is constituted by an upper cover 31 and a lower cover 32. The upper cover 31 is formed to fit the width of the machine tool 5, and the lower cover 32 is formed to fit the width of the base 2. That is, two upper covers 31 are paired with one lower cover 32. The upper cover 31 is a foldable structure, and is attached to the support member with the rotation axis on the upper end side. Therefore, at the time of opening, as shown in FIG. 5, it is folded while rotating forward on the front side. On the other hand, the lower cover 32 has a structure that can be attached to and detached from the base 2, and can be moved in the front-rear direction to be attached and removed.

  Here, FIG. 7 is a perspective view showing the upper cover 31, and FIG. 8 is a perspective view showing the lower cover 32, both viewed from the back side. The upper cover 31 is composed of two members, a rotating cover 35 and a lifting cover 36. The rotary cover 35 is formed integrally with two arm portions 351 and a cover portion 352 having a curved curved surface, and the upper end portion of the arm portion 351 is attached via a rotation shaft. In the machine tool 5, the operation panel 10 is installed above the front cover 7, and the arm member 351 is attached so as to sandwich the operation panel 10. That is, the rotation cover 35 is attached to the high position of the machine tool 5 via the rotation shaft, and the upper cover 35 is displaced to the high position at the time of the rotation opening shown in FIG.

  On the other hand, the size of the upper cover 31 is increased by providing the arm portion 351. Therefore, in order to shorten the rotation radius, the upper cover 31 is divided into a rotation cover 35 and a suspension cover 36, and both are connected by a hinge 37 so as to be foldable. If there is no distinction between the rotating cover 35 and the hanging cover 36, it is necessary to secure a wide open / close space on the front side of the processing machine line 1 due to the large rotation radius. Besides, since the upper cover 31 is large, it becomes very difficult for the operator to handle. Furthermore, since the moment applied to the upper cover 31 at the time of the rotation release becomes large, there may be a problem that the support structure for supporting it becomes large.

  Therefore, in the present embodiment, as described above, the upper cover 31 is divided into the rotation cover 35 and the suspension cover 36, and the suspension cover 36 is configured to rotate in the front-rear direction by the hinge 37. Therefore, when the operator holds the handle 361 at the lower end portion of the hanging cover 36 to open and close the upper cover 31, the lifting cover 36 ascends and descends in the hanging posture, so the worker does not move substantially in the longitudinal direction It can be handled. The upper cover 31 is configured such that the arm portion 351 rotates to a position where the cover portion 352 side is higher than the rotation shaft side at the time of the rotation release shown in FIG. The inclination of the arm 351 raises the position of the cover 352, and the lower end portion of the hanging cover 36 hits the cover 352 to take a stable posture.

  The machine tool 5 is provided with an internal cover 41 surrounding a processing portion of the processing module 3 to form a processing chamber. The top cover 31 has a tip end portion of the arm 351 attached to a bracket fixed to the inner cover 41 side via a rotation shaft. A damper 38 is coupled to the rotation cover 35 of the upper cover 31 between the inner cover 41 and the bracket. The damper 38 is a gas damper and assists the operator in pulling up the upper cover 31 when the upper cover 31 is rotated open by the internal gas pressure, and keeps the open state after the upper cover 31 is opened. .

  Next, in the lower cover 32, a front surface portion 321 and a bottom surface portion 322 are formed in an L shape by a plate member. The bottom portion 322 is formed with a rectangular frame along the outer shape, in which four saucers 39 with handles are placed so as to be spread. When the work transfer device 4 transfers the work with the processing module 3, chips etc. are dropped, so that the lower cover 32 can collect the work floor surface so as not to contaminate it. That is, the transfer chamber of the work transfer device 4 needs a bottom surface for receiving chips and the like. In the present embodiment, the bottom surface of the transfer chamber forms a part of the lower cover 32 as the bottom portion 322 and is configured to be removable together. Then, when the bottom surface portion 322 is detached, the foot of the worker is not disturbed, and the processing chamber is brought closer.

  By the way, considering only bringing the worker close to the processing chamber, only the front surface portion 321 may be removed while the bottom surface portion 322 is fixed to the base 2 side. In such a case, it is conceivable that only the upper cover is configured so that the front cover 7 can be opened and rotated upward without being divided up and down. However, this would make the radius of rotation large and heavy, making it difficult to handle, and it would be necessary to make the structure more rigid. Therefore, in order to make the structure of the rotating portion of the front cover 7 as small as possible, in the present embodiment, the upper cover 31 and the lower cover 32 are divided into upper and lower parts.

  And as above-mentioned, the lower cover 32 becomes a structure which is easy to process a chip etc. by uniting the bottom face part 322. As shown in FIG. Further, the lower cover 32 is well-balanced by setting the height of the front plate 311 in accordance with the size of the bottom surface portion 322. That is, as shown in FIG. 9, the lower cover 32 has the caster 43 attached to the bottom surface portion 322 so that the operator can move the lower cover 32 without lifting it. In this respect as well, it is preferable that the bottom portion 322 be integrally formed.

  Here, FIG. 9 is a bottom view showing the lower cover 32. As shown in FIG. At the center of the bottom of the lower cover 32, a guide 45 for positioning is fixed. On the other hand, a mounting frame 42 for mounting the lower cover 32 is fixed to the front of the base 2. The mounting frame 42, as shown in FIG. 5, includes two L-shaped support frames 421 in accordance with the width dimension of the lower cover 32, and a linear connection frame 422 connecting the left and right support frames 421 in a horizontal portion. It is formed by The support frame 421 is formed along the front surface portion 321 and the bottom surface portion 322 of the lower cover 32. The guide receiver 46 is fixed to the central portion of the connecting frame 422. When the lower cover 32 is attached to the mounting frame 42, the guide 45 rides on and enters the guide receiver 46.

  The lower cover 32 is easy to move by the caster 43, but it may be considered that the positioning may not be stable depending on the condition of the work floor. In such a case, if the lower cover 32 does not move to the correct position, the mounting operation becomes troublesome. Therefore, the guide 45 and the guide receiver 46 are configured to guide the mounting position of the lower cover 32. The guide 45 is tapered at its tip end in the width direction to correct lateral deviation. The guide 45 is fixed at a lower position than the guide receiver 46, and the caster 43 is lifted when the lower cover 32 is attached. A taper is also formed at the bottom of the guide 45 so as to smoothly ride on the guide receiver 46.

  By the way, as shown in FIG. 9, the lower cover 32 is formed such that the bottom surface portion 322 is narrower than the front surface portion 321. This is because, as shown in FIG. 8, the bottom surface portion 322 is inserted between the pair of left and right support frames 421. The fixing plate 33 is joined to a position where the front surface portion 321 protrudes from the bottom surface portion 322 in the width direction. The fixing plate 33 is placed on the upper end of the support frame 421, but a lock mechanism is provided at the upper end of the support frame 421 so that the lower cover 32 is not displaced after mounting. FIG. 10 is a side view showing the lock mechanism, showing the unlocked state (A) and the locked state (B).

  As described above, the lower cover 32 is attached to the mounting frame 42 by fitting the guide 45 into the guide receiver 46. At that time, the fixing plate 33 of the lower cover 32 is placed on the upper end surface of the support frame 421. A projection 47 is formed on the upper end surface of the support frame 421, and the projection 47 is fitted into a positioning hole 331 formed in the fixing plate 33. Then, in order to fix the lower cover 32 mounted to the mounting frame 42, a fixing clamp 48 for pressing the fixing plate 33 is provided on the upper end surface of the support frame 421.

  The fixed clamp 48 is a toggle clamp, and when the handle 481 is operated in the state shown in FIG. 10A, the clamp pad 482 is pressed against the fixed plate 33 as shown in FIG. 10B. In that state, the link mechanism constituting the toggle clamp limits the action of the force from the clamp pad 482 side, and the locked state is maintained. On the other hand, operation of the handle 481 returns the clamp pad 482 to the released state shown in FIG. 10 (A).

  Next, the front cover 7 constitutes a transfer chamber in which the work transfer device 4 moves as described above. Therefore, in the open state in which the upper cover 31 is opened and the lower cover 32 is removed, it is necessary to stop the operation of the work transfer device 4. The machine tool line 1 is equipped with a drive switch for stopping the operation directly by the operator, a detection switch for detecting the open state of the front cover 7 as a safety device, and the automatic stop of the work transfer device 4 It is supposed to be done.

  The open state of the front cover 7 needs to be detected even in either of the upper cover 31 and the lower cover 32. Therefore, it is conceivable to provide a detection switch for detecting the rotation operation of the upper cover 31 and a detection switch for detecting removal of the lower cover 32. However, since the lower cover 32 is removed and placed away from the processing machine line 1, if the lower cover 32 and the processing machine line 1 side are connected by wiring, the wiring for the work is It gets in the way. Therefore, in the present embodiment, by detecting the relationship between the upper cover 31 and the lower cover 32, even when one of the upper cover 31 and the lower cover 32 is in the open state, the detection is made.

  In the upper cover 31, as shown in FIG. 7, an open / close detection sensor 55 is installed in a box 51 on the back surface of the lower end portion. The box 51 is formed with an engagement portion 53 to which the hook 52 shown in FIG. 8 can be inserted, and the open / close detection sensor 55 detects whether the hook 52 is inserted into the engagement portion 53 or not. . The lower cover 32 has a receiving pad 56 for receiving the lower end of the upper cover 31 and a hook 52 which is inserted into the engaging portion 53 and maintains the closed state of the upper cover 31 so as to protrude upward from the front surface portion 321 It is done. Therefore, when the upper cover 31 and the lower cover 32 are closed as shown in FIG. 4, the hook 52 is inserted into the engaging portion 53, and the open / close detection sensor 55 detects the closed state. Then, if either the upper cover 31 or the lower cover 32 is in the open state, the hook 52 is pulled out from the engagement portion 53, so the open / closed detection sensor 55 detects the open state.

  Subsequently, a case where maintenance or the like is performed on the processing module 3 in the exterior cover 6 in the processing machine line 1 will be described. At this time, the worker opens and closes the front cover 7 as follows. First, the operator turns off the drive switches of the machine tool 5 and the work transfer device 4 to stop the operation, and then pulls the handle 361 of the upper cover 31 to the upper front side by hand. The hook 52 is pulled out of the engaging portion 53 when the upper cover 31 is opened, so an open signal is sent from the open / close detection sensor 55 to the control device, and the machine is stopped even if the machine tool 5 or the work transfer device 4 is in operation. Control is performed.

  The upper cover 31 pulled up by the worker rotates in such a manner that the rotary cover 35 is pushed up while receiving the support by the expansion operation of the damper 38. The upward rotation of the rotation cover 35 causes the lifting cover 36 connected by the hinge 37 to rise while maintaining a hanging posture. Then, the upper cover 31 is finally in the state as shown in FIG. 5, and is displaced to a position higher than the operation panel 10, and the hanging cover 36 and the cover portion 352 are disposed so as to overlap.

  The locking clamp 48 is then unlocked to remove the lower cover 32. That is, the handle 481 is rotated upward from the state shown in FIG. 10B, and the clamp pad 482 is also pulled up accordingly. Then, the fixing plate 33 released from the pressing of the clamp pad 482 is also removed from the projection 47, and the lower cover 32 is pulled out from the mounting frame 42 side. The lower cover 32 separated from the processing machine line 1 travels while the caster 43 rolls on the work floor, and is transferred to a predetermined arrangement location.

  The processing machine line 1 advances to the position of the mounting frame 42 and opens the front door 411 of the inner cover 41 by making the corresponding upper cover 31 and lower cover 32 open with respect to a plurality of machine tools 5 arranged side by side. Thus, maintenance work and parts replacement can be performed on objects in the processing room inside. Further, if chips and the like are accumulated on the bottom surface portion 322 from the lower cover 32 removed, the saucer 39 is removed and processing such as chips and the like is performed.

  On the other hand, when the front cover 7 is closed, the lower cover 32 which the operator has left is moved and attached to the mounting frame 42. The lower cover 32 is inserted such that the bottom surface portion 322 is inserted between the pair of left and right support frames 421. At this time, the guide 45 enters into the guide receiver 46 and alignment in the width direction is performed, and the lower cover 32 is mounted in a state where the guide 45 rides on the guide receiver 46 and the caster 43 is lifted. In the lower cover 32, the fixing plate 33 is placed on the upper end surface of the support frame 421, and the protrusion 47 is fitted into the positioning hole 331. Further, with regard to the fixed clamp 48, the clamp pad 482 is rotated and pressed against the fixed plate 33 by the handle 481 in the state shown in FIG.

  The upper cover 31 is pulled by the operator with his hand on the handle 361 so that the upper cover 31 is pulled by the lifting cover 36 and the rotating cover 35 rotates while the damper 38 is contracted. When the handle 361 is pushed toward the processing module 3 in a state of being lowered to the lowest position, the hook 52 on the lower cover 32 side is inserted into the engaging portion 53 on the rear side of the lifting cover 36 to be closed. At this time, the open / close detection sensor 55 detects the closed state of the front cover 7 in which both the upper cover 31 and the lower cover 32 are closed.

  Therefore, according to the present embodiment, since the front cover 7 is configured to be opened and closed by the upper cover 31 and the lower cover 32, the operator can enter the transfer chamber in the open state, and is close to the processing chamber It became possible to do maintenance and other work at the location. In particular, since the lower cover 32 is integrally formed up to the bottom surface portion 322, when it is removed from the processing machine line 1, the foot of the worker is not disturbed and the work becomes easy to perform. Further, since the lower cover 32 is provided with the caster 43, it is easy for the operator to handle, and the guide 45 enters the guide receiver 46 at the time of mounting, so that the mounting operation can be performed accurately and easily. Furthermore, by providing the fixing clamp 48 on the mounting frame 42, workability is also excellent in that the lower cover 32 can be locked and released without using a tool.

  Since the upper cover 31 has the rotary cover 35 and the suspension cover 36 connected by the hinge 37, the operator can perform opening and closing operations without substantially changing the standing position. Further, the upper cover 31 is compactly folded in the open state and does not get in the way, and the damper 38 supporting the upper cover 31 also has a small load, so a small size can be used. Furthermore, the number of parts can be reduced in that the opening and closing detection sensor 55 detects the opening and closing of both the upper cover 31 and the lower cover 32. Further, since the open / close state of the lower cover 32 is performed by the open / close detection sensor 55 provided on the upper cover 31 side, the wiring to the lower cover 32 is not necessary. Therefore, the wiring does not extend from the moved lower cover 32 and interfere with the operator.

As mentioned above, although one Embodiment of this invention was described, this invention is not limited to these, A various change is possible in the range which does not deviate from the meaning.
For example, although the upper cover 31 is configured to be rotatable in the vertical direction in the above embodiment, it may be configured to slide in the vertical direction using a slide rail.
In the embodiment, the front cover 7 is configured by the upper cover 31 formed to the width of the machine tool 5 and the lower cover 32 formed to the width of the base 2, for example. Depending on the configuration of the processing machine line, the upper cover may be configured to correspond to a plurality of machine tools, or conversely, the lower cover may be configured for each machine tool.
The lower cover 32 is formed by integrally forming the bottom surface portion 322. However, for example, the bottom surface portion side may be a frame and only the front surface portion 321 may be removed.

DESCRIPTION OF SYMBOLS 1 ... Machining machine line 2 ... Base 3 ... Machining module 4 ... Work conveyance device 5 ... Machine tool 6 ... Exterior cover 7 ... Front cover 31 ... Upper cover 32 ... Lower cover 35 ... Rotating cover 36 ... Hanging cover 39 ... Saucer 42 ... Mounting frame 45 ... Guide 46 ... Guide support 48 ... Fixed clamp 55 ... Open / close detection sensor

Claims (7)

The work transfer device includes a plurality of processing modules for performing predetermined processing on a work, and a work transfer device for transferring a work between the processing modules, and the work transfer device is provided at the front of an exterior cover surrounding the processing module. It is a processing machine line provided with an enclosing front cover,
The front cover is divided up and down by an upper cover and a lower cover, the upper cover is displaceably supported on the side of the processing unit where the processing module is located, and the lower cover is a caster that enables traveling movement. comprising processing machinery line, wherein said those removable from the machining side. In order to support the lower cover, there is provided a mounting frame fixed on the processing portion side, and the mounting frame is formed with a guide receiver for positioning the lower cover in the width direction, and the lower cover is formed on the lower cover A processing machine line according to claim 1 , characterized in that a guide is provided which is adapted to ride on and be fitted into the guide support. The lower cover is a cover member comprising a front plate and a bottom plate, the claim 1 or claims on the bottom plate, characterized in that in which one or more of the pan was placed 2 The processing machine line described in. The mounting frame is an L-shaped L-shaped frame, and the lower cover is formed with a fixing plate mounted on the upper end of the rising portion of the L-shaped frame, and the fixing plate is formed at the upper end of the rising portion of the L-shaped frame The processing machine line according to claim 2 , further comprising a lock member for pressing the upper part from above. The processing machine line according to any one of claims 1 to 4 , wherein the upper cover is opened and closed in the vertical direction via a rotation shaft to the processing portion side. The lower cover is formed with a hook at its upper end, and the upper cover is formed with an engaging portion capable of inserting the hook at its lower end, and the upper cover is provided with the hook for the engaging portion A processing machine line according to claim 5 , further comprising a detection sensor for detecting the presence or absence of the insertion of. The upper cover includes a cover portion and an arm portion extending upward from the cover portion, and the upper end portion of the arm portion is rotatably supported at the processing portion side, and a pin at the lower end portion of the rotational member A processing machine line according to claim 5 or 6 , characterized in that it is constituted by a combined hanging member.

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