JP2023074435A - Frame opening device of paper machine - Google Patents

Abstract

To allow a movable piece to simply and quickly move from between upper and lower frames so as to form an open space between the upper and lower frames of a frame opening device of a paper machine.SOLUTION: A frame opening device 100 of a paper machine 1 has an actuator 20 that allows a movable piece 13 to be inserted into or drawn out from an open space A in a state where an upper frame 11 is lifted up. The actuator 20 allows the movable piece 13 to slide along a top face of a lower frame 12 and be inserted into and drawn out from the open space A and enables the movable piece 13 drawn out from the open space A to move to the outside of a tool attaching and detaching area B facing the open space A.SELECTED DRAWING: Figure 6

Description

TECHNICAL FIELD The present invention relates to a paper machine frame opening device for replacing endless circular tools such as wires and felts used in the wire part or press part of the paper machine.

A conventional frame opening device for a paper machine, as described in Patent Document 1, moves a movable piece (block) provided between upper and lower frames in the paper machine from between the upper and lower frames to open the upper and lower frames. An open space is formed between the frames of the paper machine so that the endless circular tools used in the paper machine can be attached to and detached from the upper and lower frames through the open space.

The frame opening device for a paper machine disclosed in Patent Document 1 lifts the upper frame with a hydraulic jack, then further jacks up the hydraulic jack to lift the movable piece from the upper surface of the lower frame and float it between the upper and lower frames. In this state, the movable piece is rotated 90 degrees to move the movable piece outward from between the upper and lower frames to form an open space between those frames, and then the movable piece is moved to the open space by a hydraulic jack. is lowered out of the tool attaching/detaching work area facing the Tools are taken in and out of the upper and lower frames from the tool attaching/detaching work area via the open space, and are exchanged.

Japanese Utility Model Laid-Open No. 5-35897

The frame opening device for a paper machine disclosed in Patent Document 1 lifts the upper frame and then moves the movable piece out of the tool attaching/detaching work area from between the upper and lower frames by a hydraulic jack so as not to interfere with tool changing. Yes, it can save labor.

However, in the frame opening device for a paper machine disclosed in Patent Document 1, the movable piece is lifted from the upper surface of the lower frame before the movable piece is rotated 90 degrees between the upper and lower frames and moved outward. float between the upper and lower frames. Accordingly, the steps required to move the movable piece from between the upper and lower frames to create an open space between them are complicated.

SUMMARY OF THE INVENTION An object of the present invention is to easily and quickly move a movable piece from between upper and lower frames to form an open space between the upper and lower frames in a frame opening device for a paper machine.

In the invention according to claim 1, a movable piece provided between upper and lower frames in a paper machine is moved from between the upper and lower frames to form an open space between the upper and lower frames, thereby In a frame opening device for a paper machine in which an endless circular tool used for a paper machine can be attached to and removed from the upper and lower frames from the open space, the movable piece is moved into the open space while the upper frame is lifted. an actuator for inserting and withdrawing the movable piece from the open space by sliding the movable piece along the upper surface of the lower frame and inserting the movable piece into and withdrawing from the open space; The movable piece pulled out from the open space can be moved outside the tool attachment/detachment work area facing the open space.

The invention according to claim 2 is characterized in that, in the invention according to claim 1, the actuator rotates between an original position and a maximum turning position about a support shaft that does not move relative to the lower frame. an arm, which is pivotable along the plane in which the movable piece moves, and which is pivotally supported by the movable piece and has a slide hole provided with a rotary shaft orthogonal to the plane in which the movable piece moves is slidably fitted to the tip rod portion of the swivel arm, and when the swivel arm swivels between the original position and a fixed intermediate swivel position, the swivel arm inserts the movable piece into the open space. Linearly moved between a completion position and a drawing completion position outside the open space, and when the turning arm turns between the intermediate turning position and the maximum turning position, the turning arm moves the movable piece to the drawing completion. It is designed to turn and move between a position and a relief position outside the tool attachment/detachment work area.

The invention according to claim 3 is the invention according to claim 2, further comprising an engaging portion provided on the movable piece when the movable piece is between the pull-out complete position and the escape position. to prevent free relative movement of the movable piece with respect to the pivot arm.

The invention according to claim 4 is the invention according to claim 1, wherein the actuator further includes a first cylinder device connected to the movable piece and a second cylinder device supported by the lower frame, The first cylinder device is supported by the lower frame via two first and second intermediate links to form a parallelogram link with the first and second intermediate links and the lower frame; A second cylinder device is connected to the second intermediate link to support the parallelogram link, and the first cylinder device is supported by the parallelogram link and the second cylinder device to move the movable piece to the opening. The parallelogram link and the parallelogram link are stretched and contracted so as to linearly move between an insertion completion position within the space and a withdrawal completion position outside the open space. Through a first cylinder device, the movable piece is telescopically moved between the pull-out completion position and the relief position outside the tool attachment/detachment work area.

The invention according to claim 5 is, in the invention according to claim 4, further characterized in that the first cylinder device is provided in the movable piece when the movable piece is between the pull-out complete position and the escape position. A relative movement prevention means is provided that engages with the joint and prevents free relative movement of the movable piece with respect to the first cylinder device.

The invention according to claim 6 is the invention according to any one of claims 2 to 5, further comprising: when the movable piece is set at the insertion completion position, upper and lower frames provided on the upper frame and the lower frame respectively; and connecting means for integrally connecting the upper and lower frames and the movable piece.

(Claim 1)
(a) Insertion/withdrawal of the movable piece into/from the open space formed between the upper and lower frames is performed by lifting the upper frame and sliding the movable piece along the upper surface of the lower frame. Since the movable piece is not lifted from the upper surface of the lower frame, it is easy and quick.

(b) The actuator inserts the movable piece into the open space, allows it to be pulled out, and further allows the movable piece pulled out from the open space to move outside the tool attachment/detachment work area.

Therefore, the operation of pulling out the movable piece by the actuator from the open space and moving the pulled out movable piece out of the work area for attaching/detaching the tool can be performed continuously, which is simple and quick.

Further, the operation of inserting the movable piece by the actuator from outside the tool attachment/detachment work area into the open space can be performed continuously, which is simple and quick.

(Claim 2)
(c) A series of pivoting motions of the pivoting arm of the actuator from the original position to the intermediate pivoting position, and then to the maximum pivoting position, from the insertion complete position within the open space of the movable piece to the withdrawal complete position outside the open space. A simple mechanical structure enables simple and quick linear movement from the pull-out completion position to the escape position outside the tool attachment/detachment work area.

In addition, by a series of turning motions of the turning arm of the actuator from the maximum turning position to the intermediate turning position and then to the original position, the movable piece is moved from the escape position outside the tool attachment/detachment work area to the drawing completion position outside the open space. A simple mechanical structure makes it possible to easily and quickly perform the turning movement to and the linear movement operation from the withdrawal completion position to the insertion completion position in the open space.

(Claim 3)
(d) The swivel arm engages with an engaging portion provided on the movable piece when the movable piece is between the draw-out position and the retracted position, thereby allowing free relative movement of the movable piece with respect to the swivel arm. A relative movement blocking means for blocking is provided. As a result, when the movable piece is slidably fitted in the slide hole of the rotating shaft and the tip rod portion of the turning arm is slidably moved by turning the turning arm, the movable piece moves toward the turning arm. Forward movement from the pull-out completion position pulled out of the open space without relative movement to the escape position outside the tool attachment/detachment work area, and return movement from the escape position back to the pull-out completion position , moves integrally with the swivel arm.

Therefore, the movable piece that has returned to the drawing completion position by the turning of the turning arm returns to the open space between the upper and lower frames while maintaining the same relative position as when it was pulled out from the open space. , and then smoothly inserted into the open space.

(Claim 4)
(e) The series of continuous operations of the first cylinder device of the actuator from the extended state to the contracted state and the subsequent telescopic motion from the extended state to the contracted state of the second cylinder device causes the movable piece to move. Straight line movement from the insertion completion position in the open space to the withdrawal completion position outside the open space, and swivel movement operation from the withdrawal completion position to the escape position outside the tool attachment/detachment work area are simple and quick due to the simple mechanical structure. made to

In addition, a series of continuous movements of the second cylinder device of the actuator from the contracted state to the extended state, followed by the expansion and contraction motion of the first cylinder device from the contracted state to the extended state, make the tool of the movable piece Rotational movement from the escape position outside the attachment/detachment work area to the draw-out completion position outside the open space, and linear movement operation from the draw-out completion position to the insertion completion position in the open space can be performed easily and quickly by a simple mechanical structure. done.

(Claim 5)
(f) The first cylinder device engages with the engaging portion provided on the movable piece when the movable piece is between the pull-out complete position and the retracted position, thereby freeing the movable piece with respect to the first cylinder device. relative movement prevention means for preventing a relative movement. As a result, the movable piece moves forward from the draw-out completion position pulled out of the open space to the escape position outside the tool attachment/detachment work area, and further moves from the escape position to the draw-out position. The process of returning to the completed position is moved integrally with the first cylinder device without deviation.

Therefore, when the movable piece that has returned to the pull-out completion position together with the first cylinder device due to the expansion and contraction operation of the second cylinder device is pulled out of the open space between the upper and lower frames. maintains the same relative position as before, and is then immediately and smoothly inserted into the open space.

(Claim 6)
(g) When the movable piece is set at the insertion completion position, the movable piece is connected to the upper and lower connecting portions provided on the upper frame and the lower frame, respectively, so that the upper and lower frames and the movable piece are integrated. Coupling means are provided. As a result, when the movable piece is inserted into the open space between the upper and lower frames, the upper and lower frames and the movable piece are integrated, and the rigidity of the entire frame made up of these three members is improved. , a tensile load and/or a compressive load between the upper and lower frames can be easily and reliably carried.

FIG. 1 shows a main part of a paper machine, (A) is a side view showing a state in which a movable piece is inserted, and (B) is a side view showing a state in which the movable piece is pulled out. FIG. 2 shows the main part of the paper machine, (A) is a front view showing a state in which the movable piece is inserted, and (B) is a front view showing a state in which the movable piece is pulled out. FIG. 3 is a cross-sectional view of a principal part showing a cantilever pressing device. FIG. 4 is a schematic perspective view showing an actuator. FIG. 5 is a schematic front view showing the actuator with the movable piece inserted. FIG. 6 is a schematic front view showing the actuator and showing a state in which the movable piece is moved out of the tool attaching/detaching area. FIG. 7 is a schematic perspective view showing an actuator. FIG. 8 is a schematic front view showing the actuator with the movable piece inserted. FIG. 9 is a schematic front view showing the actuator with the movable piece pulled out. FIG. 10 is a schematic front view showing the actuator and showing a state in which the movable piece is moved out of the tool attaching/detaching area.

1 and 2 schematically show the main part of a wire part (or press part) 2 of a paper machine 1, which is supported by a drive-side frame 3 and an operation-side frame 4 installed on the floor surface. A tool conveying section 2A composed of a large number of rolls or the like is provided on a pedestal 5, and an endless circular tool W such as a wire (or felt) is stretched around the tool conveying section 2A.

In this specification, the direction in which the wire W traveling around the press part 2 of the paper machine 1 advances on the tool conveying section 2A is forward, and the opposite direction is backward. Further, the width direction of the wire W perpendicular to the winding direction of the wire W in the wire part 2 of the paper machine 1 is defined as the lateral direction.

The paper machine 1 comprises an operation-side frame 4 comprising upper and lower frames 11 and 12 and a movable piece 13 which can be temporarily removed from between the upper and lower frames 11 and 12. It is The movable piece 13 forms a rectangular parallelepiped block that is inserted between the lower surface 11F of the upper frame 11 and the upper surface 12F of the lower frame 12 without any gap when the operation side frame 4 is configured together with the upper and lower frames 11 and 12. It is

The paper machine 1 moves the movable piece 13 provided between the upper and lower frames 11 and 12 of the operation-side frame 4 from between the upper and lower frames 11 and 12 when reupholstering the new and old tools W. An open space A is formed between the frames 11 and 12, and the endless circular tool W is attached to and removed from the upper and lower frames 11 and 12 from the open space A. can be exchanged around

The paper machine 1 is provided with a cantilever 6 that is transversely connected to the upper frame 11 of the drive-side frame 3 and the operation-side frame 4 in a penetrating manner. A pressing device 8 provided on a fixed frame 7 erected on the periphery of the cantilever 6 makes it possible to press down the projecting side end of the cantilever 6 . As shown in FIG. 3, the pressing device 8 rotates a feed screw 8C, which is screwed into a fixed nut 7A provided on the fixed frame 7, by using the rotational force of the motor 8A through a reduction gear 8B or the like. A push-down force is applied to the pressed portion 6A provided on the upper surface of the overhanging end portion of the cantilever 6 by the tip pressing portion 8D of 8C. As a result, the cantilever 6 can be lifted at the operation side end with the driving side frame 3 as a fulcrum, and the upper frame 11 of the operation side frame 4 connected to the operation side end of the cantilever 6 can be easily lifted without manual labor. , a gap is formed between the upper frame 11 and the movable piece 13 so that the movable piece 13 can be moved from between the upper and lower frames 11 and 12 as described above.

The frame opening device 100 for easily and quickly moving the movable piece 13 from between the upper and lower frames 11 and 12 will be described in detail below.

As shown in FIGS. 4 to 6, the frame opening device 100 moves the movable piece 13 into the open space between the upper frame 11 and the lower frame 12 while the pressing device 8 lifts the upper frame 11 via the cantilever 6 . It has an actuator 20 that can be inserted from the operation side along the left-right direction with respect to A and can be pulled out.

The actuator 20 horizontally slides the movable piece 13 along the upper surface 12F of the lower frame 12 (surface forming the lower portion of the open space A), inserts it into the open space A (shown by the solid line in FIG. Movable piece 13), so that it can be pulled out (movable piece 13 indicated by a dashed line in FIG. 6).

In addition, the actuator 20 moves the movable piece 13 pulled out from the open space A outside the tool attaching/detaching work area B (below the tool attaching/detaching work area B in this embodiment) facing the open space A from the outside in the horizontal direction. It is made movable (movable piece 13 indicated by a solid line in FIG. 6).

Specifically, the actuator 20 sandwiches the lower frame 12 from both front and rear sides, and pivots between the original position and the maximum pivot position (rotation angle has a pair of front and rear swivel arms 21 (for example, 126 degrees). When the swivel arm 21 of the actuator 20 is at its original position, the movable piece 13 is set at the insertion completion position P1 in the open space A, and the swivel arm 21 of the actuator 20 is at an intermediate swivel position where the swivel arm 21 of the actuator 20 is rotated by, for example, 36 degrees from the original position. When the movable piece 13 is set at the withdrawal completion position P2 outside the open space A, and the turning arm 21 of the actuator 20 turns from the intermediate turning position by 90 degrees, for example, when the movable piece 13 is at the maximum turning position, the movable piece 13 is placed at the tool attaching/detaching operation. The relief position P3 outside the area B is set.

Here, the actuator 20 is made rotatable along the plane in which the movable piece 13 moves as described above (the paper surface of FIGS. 5 and 6), and is pivotally supported on the movable piece 13 so that the movable piece 13 moves. The tip rod portion 23 of the swivel arm 21 is slidably fitted into the slide hole 22K provided in the rotating shaft 22 extending in the front-rear direction perpendicular to the plane of rotation. ing.

More specifically, the actuator 20 includes a motor 31, a speed reducer 32, and the like provided inside a drive box 30 projecting from the lower portion of the lower frame 12 toward the operation side, and a speed reducer 32 protruding from the drive box 30 in the front-rear direction. , are used as supporting shafts 21J for the pair of front and rear swivel arms 21, respectively. Each swing arm 21 has a large-diameter portion 21A on the base-end side, and a base end portion thereof is inserted and fixed to each of the above-described support shafts 21J.

Further, the actuator 20 has a rotary shaft 22 that is pivotally supported so as to pass through the central portion of the movable piece 13 in the front-rear direction when viewed from the side, and protrudes outward from both front and rear sides of the movable piece 13 . A tip rod portion 23 of each turning arm 21 is slidably fitted into each slide hole 22K bored in both ends of the turning shaft 22 in the direction perpendicular to the axis. In order to restrict the free slide stroke end of the movable piece 13 along the tip rod portion 23 when the rotating shaft 22 pivotally supported by the movable piece 13 is slidable along the tip rod portion 23. stopper portions 24 and 25 are fixed to the base portion and the tip end portion of the tip rod portion 23 of each swing arm 21 to the large-diameter portion 21A, respectively.

The operation of the frame opening device 100 using the actuator 20 is as follows.
(1) When the swivel arm 21 swivels between the original position and a certain intermediate swivel position, for example, by a swivel angle range of 36 degrees, the swivel arm 21 completely inserts the entire movable piece 13 into the open space A. It is linearly moved between an insertion completion position P1 where it is moved and a drawing completion position P2 where it is completely pulled out of the open space A.

The movable piece 13 receives a turning force from the tip rod portion 23 of the turning turning arm 21, is sandwiched between the lower surface 11F of the upper frame 11 and the upper surface 12F of the lower frame 12, and is guided in the horizontal direction. Moving.

(2) When the swivel arm 21 swivels between the intermediate swivel position and the maximum swivel position by a swivel angle of, for example, 90 degrees, the swivel arm 21 moves the movable piece 13 between the pull-out completion position P2 and the tool attaching/detaching work area B. is pivotally moved between the escape position P3 below the .

The movable piece 13 receives a turning force from the tip rod portion 23 of the turning arm 21 and is seated on the stopper portion 24 of the turning arm 21 under the force of gravity to turn and move as described above.

As shown in FIGS. 5 and 6, when the movable piece 13 is between the drawing completion position P2 and the escape position P3 as described above, the turning arm 21 is positioned on the left side (operating arm 21) of each of the front and rear sides of the movable piece 13, as shown in FIGS. Side) Each recessed engagement portion 13R provided at the lower corner portion (the recessed engagement portion 13R is, for example, a square groove shape, and in the movable piece 13 positioned at the insertion completion position P1 of the open space A, the movable piece 6, and the movable piece with respect to the swivel arm 21 engages with the innermost corner shown in FIG. 13 is provided with stopper pin-like relative movement prevention means 21R for preventing free relative movement. The relative movement preventing means 21R is provided in the stopper portion 24 described above in this embodiment. That is, the relative movement blocking means 21R (stopper pin) prevents the movement of the movable piece 13 between the pull-out completion position P2 and the escape position P3 (the turning angle range up to 90 degrees from the pull-out completion position P2 toward the escape position P3). , more preferably less than 90 degrees under the action of gravity), the movable piece 13 does not rotate around the rotation shaft 22 due to vibrations or the like acting on the movable piece 13, and the movable piece 13 does not rotate. 13 does not separate from the aforementioned stopper portion 24 along the tip rod portion 23 of the turning arm 21 in the F direction shown in FIG.

Incidentally, the recessed engagement portion 13R provided in the movable piece 13 is not limited to a rectangular groove shape, and may be a curved groove shape as shown in FIG. This recessed engagement portion 13R is a relative movement preventing means 21R (stopper pin) on the paper surface of FIG. A curved groove corresponding to the locus of movement (x, y) is formed, and the relative movement preventing means 21R is led from the entrance opening to the innermost part. When the movable piece 13 is between the pull-out completion position P2 and the escape position P3 as described above, the relative movement preventing means 21R engages with the innermost portion of the curved groove of the concave engaging portion 13R. engage and prevent free relative movement of the movable piece 13 with respect to the pivot arm 21 .

According to the above (1) and (2), when the movable piece 13 is positioned from the insertion completion position P1 in the open space A through the withdrawal completion position P2 to the escape position P3 below the tool attachment/detachment work area B, the old and new A wire W is attached to and detached from the upper and lower frames 11 and 12 from the tool attaching/detaching work area B through the open space A, and is replaced around the tool conveying section 2A in the wire part 2. As shown in FIG.

After the wire W is exchanged as described above, the movable piece 13 moves from the relief position P3 below the tool attachment/detachment work area B to the insertion completion position P1 in the open space A via the withdrawal completion position P2 by the above (1) and (2). , the paper machine 1 moves the frame 5, which is provided with the tool conveying section 2A and the like on which the wires W are stretched in the wire part 2, to the drive side frame 3 and the operation side frame 4 (upper and lower frames 11, 12, and movable piece 13) for normal operation.

Here, the connecting means 40 for integrally connecting the upper and lower frames 11 and 12 and the movable piece 13 when the frame opening device 100 sets the movable piece 13 to the insertion completion position P1 as described above will be described.

As shown in FIGS. 5 and 6, the connecting means 40 is composed of engaging recesses 40K that open outward from the right end portions of the front and rear side surfaces of the movable piece 13, respectively. When the movable piece 13 is inserted between the upper and lower frames 11 and 12 from the drawing completion position P2 side and enters the insertion completion position P1, it can swing to the fulcrum 41S provided at the lower part of both front and rear sides of the upper frame 11. Engagement rollers 41R provided at the lower ends of both supported link-shaped upper connecting portions 41, and both link-shaped lower connecting portions supported swingably by fulcrums 42S provided at upper portions of both front and rear side surfaces of the lower frame 12. After waiting for the entry of the movable piece 13, each of the engaging rollers 42R provided at the upper end of the engaging roller 42R comes into rolling contact with the upper and lower expanding surfaces 40a and 40b expanding toward the drive side of the engaging recess 40K. are engaged with the engaging recess 40K while swinging the connecting portions 41 and 42 toward the driving side. When the movable piece 13 is positioned at the insertion completion position P1, as shown in FIG. The upper and lower frames 11 and 12 and the movable piece 13 are integrally connected by engaging with the inner side surfaces of the upper and lower expanding surfaces 40a and 40b in each of the engaging recesses 40K.

When the connecting portions 41, 41 of the connecting means 40 wait for the entry of the movable piece 13, as shown in FIG. A weight 42W provided on the opposite side of the engaging roller 42R sandwiching the fulcrum 42S in the connecting portion 42 and facing the engaging recess 40K of The connecting portion 42 is vertical due to the weight, and the engaging roller 42R faces the engaging concave portion 40K of the movable piece 13 at a waiting position in front of the movable piece 13 in the moving direction.

The movable piece 13 is positioned at a relief position P3 below the tool attaching/detaching work area B, and the old and new wires W are attached to and removed from the upper and lower frames 11 and 12 from the tool attaching/detaching work area B through the open space A. At this time, the wire W passes through the open space A by pushing the upper and lower link-like connecting portions 41 and 42 in the r direction shown in FIG. After the wire W has passed through, the link-like connecting portions 41 and 42 are returned to the standby position by the weight of the engaging roller 41R and the weight 42W, respectively.

Therefore, according to the frame opening device 100, the following effects are obtained.
(a) The movable piece 13 is inserted into and pulled out from the open space A formed between the upper and lower frames 11 and 12 by sliding the movable piece 13 along the upper surface of the lower frame 12. Since the movable piece 13 is not lifted from the upper surface of the lower frame 12, it is easy and quick.

(b) The actuator 20 allows the movable piece 13 to be inserted into the open space A and to be pulled out, and furthermore to allow the movable piece 13 pulled out from the open space A to move outside the tool attachment/detachment work area B. .

Therefore, the operation of pulling out the movable piece 13 from the open space A by the actuator 20 and moving the pulled out movable piece 13 out of the tool attachment/detachment work area B can be performed continuously, which is simple and quick.

Further, the operation of inserting the movable piece 13 from outside the tool attachment/detachment work area B into the open space A by the actuator 20 can be performed continuously, which is simple and quick.

(c) A series of pivoting motions of the pivot arm 21 of the actuator 20 from the original position to the intermediate pivot position and then to the maximum pivot position, so that the movable piece 13 moves from the insertion completion position in the open space A to the open space A. The linear movement to the outside pull-out completion position P2 and the pivotal movement operation from the pull-out completion position P2 to the escape position P3 outside the tool attachment/detachment work area B can be performed easily and quickly by a simple mechanical structure.

In addition, by a series of turning motions of the turning arm 21 of the actuator 20 from the maximum turning position to the middle turning position and then to the original position, the movable piece 13 moves from the escape position P3 outside the tool attachment/detachment work area B to the open space. Rotational movement to the withdrawal completion position P2 outside A and linear movement operation from the withdrawal completion position P2 to the insertion completion position P1 in the open space A can be performed easily and quickly by a simple mechanical structure.

(d) The swivel arm 21 engages with the engaging portion 13R provided on the movable piece 13 when the movable piece 13 is between the pull-out completion position P2 and the escape position P3. A relative movement preventing means 21R for preventing free relative movement of the piece 13 is provided. As a result, the movable piece 13 is turned by turning the turning arm 21 in a state where the tip rod portion 23 of the turning arm 21 is slidably fitted in the slide hole 22K of the rotating shaft 22. At this time, the movable piece 13 moves forward from the drawing completion position P2 pulled out of the open space A to the escape position P3 outside the tool attachment/detachment work area B without moving relative to the swivel arm 21, and further moves to the escape position. In the process of returning from P3 to the withdrawal completion position P2 again, it moves integrally with the swivel arm 21 without deviation.

Therefore, the movable piece 13, which has returned to the drawing completion position P2 by the turning of the turning arm 21, is pulled out from the open space A between the upper and lower frames 11 and 12. It will return maintaining the same relative position and then be smoothly inserted into the open space A immediately.

(e) When the movable piece 13 is set at the insertion completion position P1, the movable piece 13 is connected to the upper and lower connecting portions 41 and 42 provided on the upper frame 11 and the lower frame 12, respectively. 12 and the movable piece 13 are provided. As a result, when the movable piece 13 is inserted into the open space A between the upper and lower frames 11 and 12, the upper and lower frames 11 and 12 and the movable piece 13 are integrated. By improving the rigidity of the entire frame (operation side frame 4) composed of, the tensile load and/or compression load between the upper and lower frames 11 and 12 can be easily and reliably supported.

An embodiment in which the actuator 20 in the frame opening device 100 described above is changed to an actuator 50 will be described below. In this embodiment, the movable piece 13 does not have a block shape, but has a rectangular parallelepiped box shape, and has at least four sides, the right side, the front and back sides, and the top, and the left side (operating side) and the bottom side are open. Box-shaped.

The actuator 50 has a first cylinder device 51 connected to the movable piece 13 and a second cylinder device 52 supported by the lower frame 12, as shown in FIGS. In the first cylinder device 51, a mounting portion 51A provided at the tip of the piston rod is fixedly pin-coupled to the right side surface (driving side surface) of the movable piece 13. As shown in FIG. In the second cylinder device 52, mounting portions 52A provided on both sides of the cylinder are trunnion-supported by mounting brackets 12B provided on the lower portion of the lower frame 12. As shown in FIG.

The first cylinder device 51 is supported by the lower frame 12 via two first and second intermediate links 61 and 62 at both front and rear sides thereof, and the first and second intermediate links 61 and 62 and the lower Together with the frame 12, a pair of parallelogram links 60 are formed on both front and rear sides. At this time, the first cylinder device 51 is provided with both side connection links 51L pin-connected to both sides of the cylinder, and the lower frame 12 is fixedly provided with both side connection links 12L. The first and second intermediate links 61 and 62 and the connecting link 12L of the lower frame 12 form the parallelogram link 60 described above.

The second cylinder device 52 has the front and rear ends of the piston rod connected to extensions 62K of the second intermediate links 62 of the parallelogram link 60 to support the parallelogram link 60 described above. The posture of the parallelogram link 60 can be changed by the expansion and contraction of the second cylinder device 52 .

The operation of the frame opening device 100 using the actuator 50 is as follows.
(1) The first cylinder device 51 is supported by the parallelogram link 60 and the second cylinder device 52 (or supported by the lower frame 12 via the parallelogram link 60 and the second cylinder device 52). Therefore, the frame opening device 100 can be positioned at the insertion completion position P1 (FIG. 8) in the open space A between the upper and lower frames 11 and 12 by the expansion and contraction of the first cylinder device 51, and can be pulled out from the open space A. The movable piece 13 is linearly moved between the completion position P2 (FIG. 9).

(2) The frame opening device 100 operates to deform the parallelogram link 60 by the expansion and contraction of the second cylinder device 52 , and the movable piece 13 is moved through the parallelogram link 60 and the first cylinder device 51 . is pivotally moved between the withdrawal completion position P2 and an escape position P3 (FIG. 10) outside (below) the tool attachment/detachment work area B.

9 and 10, when the movable piece 13 is between the pull-out completion position P2 and the escape position P3 as described above, the first cylinder device 51 is provided on each of the front and rear side surfaces of the movable piece 13, as shown in FIGS. relative movement prevention means 70 for preventing free relative movement of the movable piece 13 with respect to the first cylinder device 51.

As shown in FIG. 7, the relative movement prevention means 70 is provided with upper and lower rollers 71P and 71Q provided on both side connecting links 51L connected to both side portions of the first cylinder device 51, respectively. , and are engaged with upper and lower groove-like engaging portions 13P and 13Q extending in the left and right horizontal direction. In this embodiment, the upper and lower rollers 71P, 71Q are provided coaxially with the connecting pin between the connecting link 51L of the first cylinder device 51 and the first and second intermediate links 61, 62. As shown in FIG.

The relative movement prevention means 70 moves the movable piece 13 toward the first cylinder device 51 by means of the contracted piston rod of the first cylinder device 51 when the movable piece 13 is between the pull-out completion position P2 and the escape position P3. By engaging the upper and lower rollers 71P and 71Q with the upper and lower groove-like engaging portions 13P and 13Q in the attracting and holding state, free relative movement of the movable piece 13 with respect to the first cylinder device 51 is prevented. The relative movement prevention means 70 prevents the movable piece 13 from moving from the first cylinder device 51 due to vibration or the like acting on the movable piece 13 in the process of moving the movable piece 13 between the pull-out completion position P2 and the escape position P3. Prevent relative movement.

According to the above (1) and (2), when the movable piece 13 is positioned from the insertion completion position P1 in the open space A through the withdrawal completion position P2 to the escape position P3 below the tool attachment/detachment work area B, the old and new A wire W is attached to and detached from the upper and lower frames 11 and 12 from the tool attaching/detaching work area B through the open space A, and is replaced around the tool conveying section 2A in the wire part 2. As shown in FIG.

After the wire W is exchanged as described above, the movable piece 13 moves from the relief position P3 below the tool attachment/detachment work area B to the insertion completion position P1 in the open space A via the withdrawal completion position P2 by the above (1) and (2). , the paper machine 1 moves the frame 5, which is provided with the tool conveying section 2A and the like on which the wires W are stretched in the wire part 2, to the drive side frame 3 and the operation side frame 4 (upper and lower frames 11, 12, and movable piece 13) for normal operation.

8 to 10, the frame opening device 100 has the connecting means 40 described above, and the movable piece 13 is connected to the upper frame 11 in the same manner as the frame opening device 100 using the actuator 20 described above. When set to the insertion completion position P1 between the lower frames 12, the upper and lower connecting portions 41 and 42 provided on the upper frame 11 and the lower frame 12 are connected to each other. The three members of the movable piece 13 can be integrally connected.

Therefore, according to the frame opening device 100, the following effects are obtained.
(a) Inserting/pulling out the movable piece 13 into/from the open space A formed between the upper and lower frames 11 and 12 is performed by placing the movable piece 13 on the upper surface of the lower frame 12 while the upper frame 11 is lifted. Since the movable piece 13 is not floated from the upper surface of the lower frame 12, it is easy and quick.

(b) The actuator 50 allows the movable piece 13 to be inserted into the open space A and pulled out, and further allows the movable piece 13 pulled out from the open space A to move outside the tool attachment/detachment work area B. .

Therefore, the operation of pulling out the movable piece 13 from the open space A by the actuator 50 and moving the pulled out movable piece 13 out of the tool attachment/detachment work area B can be performed continuously, which is simple and quick.

Further, the operation of inserting the movable piece 13 from outside the tool attachment/detachment work area B into the open space A by the actuator 50 can be performed continuously, which is simple and quick.

(c) A series of continuous operations of extending and retracting the first cylinder device 51 of the actuator 50 from the extended state to the contracted state and then extending and retracting the second cylinder device 52 from the extended state to the contracted state, Linear movement of the movable piece 13 from the insertion completion position P1 in the open space A to the withdrawal completion position P2 outside the open space A, and pivotal movement operation from the withdrawal completion position P2 to the escape position P3 outside the tool attachment/detachment work area B. , can be done easily and quickly by a simple mechanical structure.

In addition, the second cylinder device 52 of the actuator 50 is expanded and contracted from the contracted state to the expanded state, followed by the expansion and contraction action of the first cylinder device 51 from the contracted state to the expanded state. The turning movement of the piece 13 from the relief position P3 outside the tool attaching/detaching work area B to the withdrawal completion position P2 outside the open space A, and the linear movement operation from the withdrawal completion position P2 to the insertion completion position P1 in the open space A are: Simple mechanical construction makes it easy and fast.

(d) The first cylinder device 51 engages with the groove-shaped engaging portions 13P and 13Q provided on the movable piece 13 when the movable piece 13 is between the pull-out completion position P2 and the escape position P3. A relative movement prevention means 70 (upper and lower rollers 71P, 71Q) for preventing free relative movement of the movable piece 13 with respect to the first cylinder device 51 is provided. As a result, the movable piece 13 moves forward from the draw-out completion position P2 drawn out of the open space A to the escape position P3 outside the tool attachment/detachment work area B, and In the process of returning from the escape position P3 to the withdrawal completion position P2 again, it moves integrally with the first cylinder device 51 without deviation.

Therefore, the movable piece 13, which has returned to the drawing completion position P2 together with the first cylinder device 51, due to the expansion and contraction operation of the second cylinder device 52, moves toward the open space A between the upper and lower frames 11 and 12. It returns while maintaining the same relative position as when pulled out from the open space A, and is then immediately and smoothly inserted into the open space A.

(e) When the movable piece 13 is set at the insertion completion position P1, the movable piece 13 is connected to the upper and lower connecting portions 41 and 42 provided on the upper frame 11 and the lower frame 12, respectively. 12 and the movable piece 13 are provided. As a result, when the movable piece 13 is inserted into the open space A between the upper and lower frames 11 and 12, the upper and lower frames 11 and 12 and the movable piece 13 are integrated. By improving the rigidity of the entire frame composed of the upper and lower frames 11 and 12, a tensile load and/or a compressive load can be easily and reliably supported.

As described above, the embodiment of the present invention has been described in detail with reference to the drawings, but the specific configuration of the present invention is not limited to this embodiment. included in the present invention.

According to the present invention, in a frame opening device for a paper machine, it is possible to easily and quickly move a movable piece from between upper and lower frames to form an open space between the upper and lower frames.

1 Paper Machine 11 Upper Frame 12 Lower Frame 12L Connection Link 13 Movable Pieces 13P, 13Q Engagement Portion 13R Recessed Engagement Portion 20 Actuator 21 Rotating Arm 21J Support Shaft 21R Relative Movement Preventing Means 22 Rotating Shaft 22K Slide Hole 23 Tip Rod Part 40 Connecting Means 41 Upper Connecting Part 42 Lower Connecting Part 50 Actuator 51 First Cylinder Device 51L Connection Link 52 Second Cylinder Device 60 Parallelogram Link 61 First Intermediate Link 62 Second Intermediate Link 70 Relative Movement Prevention Means 71P Upper Roller 71Q Lower roller 100 Frame opening device A Open space B Tool attachment/detachment work area P1 Insertion completion position P2 Withdrawal completion position P3 Relief position

In the invention according to claim 1, a movable piece provided between upper and lower frames in a paper machine is moved from between the upper and lower frames to form an open space between the upper and lower frames, thereby In a frame opening device for a paper machine in which an endless circular tool used for a paper machine can be attached to and removed from the upper and lower frames from the open space, the movable piece is moved into the open space while the upper frame is lifted. an actuator for inserting and withdrawing the movable piece from the open space by sliding the movable piece along the upper surface of the lower frame and inserting the movable piece into and withdrawing from the open space; The movable piece pulled out from the upper frame and the lower frame can be moved outside the tool attachment/detachment work area facing the open space, and when the movable piece is set at the insertion completion position in the open space, the upper frame and the lower frame and connecting means for integrally connecting the upper and lower frames and the movable piece. The movable piece is provided at each fulcrum provided on each of the frames so as to be able to swing along the moving direction of the movable piece. By awaiting the entry of the movable piece at a standby position in front of the direction of entry into the open space, the movable piece engages with the connecting means while being swung in contact with the connecting means, and moves up and down. The frame and the movable piece are integrally connected .

The invention according to claim 2 is the invention according to claim 1, wherein the upper connecting part further includes an engaging roller that engages with the connecting means on a lower end side with respect to the fulcrum provided on the upper frame, and the movable When waiting for entry of a piece, the weight of the engaging roller causes the upper connecting portion to be in a vertical state and positioned at the standby position, and the lower connecting portion moves the engaging roller engaging the connecting means to the lower position. A weight is provided on the upper end side with respect to the fulcrum provided on the frame and on the lower end side opposite to the engagement roller provided on the lower connecting portion with the fulcrum provided on the lower frame therebetween, When waiting for the entry of the movable piece, the weight of the weight causes the lower connecting portion to be in a vertical state and positioned at the waiting position.

The invention according to claim 3 is the invention according to claim 1 or 2 , further characterized in that the actuator turns between an original position and a maximum turning position around a support shaft that does not move relative to the lower frame. The pivot arm is pivotable along the plane in which the movable piece moves, and is pivotally supported by the movable piece and has a pivot axis orthogonal to the plane in which the movable piece moves. The tip rod of the swivel arm is slidably fitted in the slide hole, and when the swivel arm swivels between the original position and a fixed intermediate swivel position, the swivel arm moves the movable piece into the open space. and a drawing-out complete position outside the open space, and when the swivel arm swivels between the intermediate swivel position and the maximum swivel position, the swivel arm moves the movable piece to the The tool is pivotally moved between a drawer completion position and a relief position outside the tool attachment/detachment work area .

The invention according to claim 4 is the invention according to claim 3 , further comprising an engaging portion provided on the movable piece when the movable piece is between the pull-out complete position and the escape position. to prevent free relative movement of the movable piece with respect to the pivot arm .

The invention according to claim 5 is the invention according to claim 1 or 2 , wherein the actuator further includes a first cylinder device connected to the movable piece and a second cylinder device supported by the lower frame. and the first cylinder device is supported by the lower frame through two first and second intermediate links to form a parallelogram link with the first and second intermediate links and the lower frame; The second cylinder device is connected to the second intermediate link to support the parallelogram link, and the first cylinder device is supported by the parallelogram link and the second cylinder device to move the movable piece. The parallelogram link is stretched and contracted so as to linearly move between an insertion completion position within the open space and a withdrawal completion position outside the open space, and the second cylinder device operates the parallelogram link. and the movable piece is telescopically moved through the first cylinder device so as to turn and move between the pull-out completion position and the escape position outside the tool attachment/detachment work area.

The invention according to claim 6 is, in the invention according to claim 5 , further characterized in that the first cylinder device has an engagement mechanism provided on the movable piece when the movable piece is between the pull-out complete position and the escape position. A relative movement prevention means is provided that engages with the joint and prevents free relative movement of the movable piece with respect to the first cylinder device .

(Claim 1 and 2 )
(a) Insertion/withdrawal of the movable piece into/from the open space formed between the upper and lower frames is performed by lifting the upper frame and sliding the movable piece along the upper surface of the lower frame. Since the movable piece is not lifted from the upper surface of the lower frame, it is easy and quick.

Further, the operation of inserting the movable piece by the actuator from outside the tool attachment/detachment work area into the open space can be performed continuously, which is simple and quick.
(c) When the movable piece is set at the insertion completion position, the movable piece is connected to the upper and lower connecting portions provided on the upper frame and the lower frame, respectively, so that the upper and lower frames and the movable piece are integrated. Coupling means are provided. As a result, when the movable piece is inserted into the open space between the upper and lower frames, the upper and lower frames and the movable piece are integrated, and the rigidity of the entire frame made up of these three members is improved. , a tensile load and/or a compressive load between the upper and lower frames can be easily and reliably carried.

(Claim 3 )
(d) A series of swiveling motions of the swivel arm of the actuator from the original position to the intermediate swivel position and then to the maximum swivel position, from the insertion complete position within the open space to the pullout complete position outside the open space of the movable piece. A simple mechanical structure enables simple and quick linear movement from the pull-out completion position to the escape position outside the tool attachment/detachment work area.

(Claim 4 )
(e) The swivel arm engages with an engaging portion provided on the movable piece when the movable piece is between the draw-out position and the retracted position, thereby allowing free relative movement of the movable piece with respect to the swivel arm. A relative movement blocking means for blocking is provided. As a result, when the movable piece is slidably fitted in the slide hole of the rotating shaft and the tip rod portion of the turning arm is slidably moved by turning the turning arm, the movable piece moves toward the turning arm. Forward movement from the pull-out completion position pulled out of the open space without relative movement to the escape position outside the tool attachment/detachment work area, and return movement from the escape position back to the pull-out completion position , moves integrally with the swivel arm.

(Claim 5 )
(f) The first cylinder device of the actuator is stretched from the extended state to the contracted state, and the second cylinder device is subsequently stretched from the stretched state to the contracted state. Straight line movement from the insertion completion position in the open space to the withdrawal completion position outside the open space, and swivel movement operation from the withdrawal completion position to the escape position outside the tool attachment/detachment work area are simple and quick due to the simple mechanical structure. made to

(Claim 6 )
(g) The first cylinder device engages with the engaging portion provided on the movable piece when the movable piece is between the pull-out complete position and the escape position, thereby freeing the movable piece with respect to the first cylinder device. relative movement prevention means for preventing a relative movement. As a result, the movable piece moves forward from the draw-out completion position pulled out of the open space to the escape position outside the tool attachment/detachment work area, and further moves from the escape position to the draw-out position. The process of returning to the completed position is moved integrally with the first cylinder device without deviation.

Claims (6)

An endless circular tool used in a paper machine by moving a movable piece provided between the upper and lower frames in the paper machine from between the upper and lower frames to form an open space between the upper and lower frames. are removable from the open space into and out of their upper and lower frames,
an actuator that allows the movable piece to be inserted into and pulled out of the open space while the upper frame is lifted;
The actuator is
The movable piece can be slid along the upper surface of the lower frame, inserted into the open space, and pulled out;
A frame opening device for a paper machine, characterized in that the movable piece pulled out from the open space can be moved outside a tool attachment/detachment work area facing the open space. The actuator has a swivel arm that swivels between an original position and a maximum swivel position about a support shaft that does not move relative to the lower frame,
The swivel arm is rotatable along the plane in which the movable piece moves, and is pivotally supported by the movable piece and is inserted into a slide hole provided in a rotary shaft orthogonal to the plane in which the movable piece moves. The tip rod part is slidably fitted,
When the pivot arm pivots between the original position and a certain intermediate pivot position, the pivot arm moves the movable piece in a straight line between the insertion complete position within the open space and the withdrawal complete position outside the open space. move,
When the swivel arm swivels between the intermediate swivel position and the maximum swivel position, the swivel arm swivels the movable piece between the pull-out completion position and a relief position outside the tool attachment/detachment work area. Item 2. A frame opening device for a paper machine according to Item 1. The swivel arm engages with an engaging portion provided on the movable piece when the movable piece is between the pull-out completion position and the escape position, allowing free relative movement of the movable piece with respect to the swivel arm. 3. The frame opening device for a paper machine according to claim 2, further comprising means for preventing relative movement. The actuator has a first cylinder device connected to the movable piece and a second cylinder device supported by the lower frame,
The first cylinder device is supported by the lower frame via two first and second intermediate links to form a parallelogram link with the first and second intermediate links and the lower frame; a two-cylinder device connected to the second intermediate link to support the parallelogram link;
The first cylinder device is supported by the parallelogram link and the second cylinder device, and linearly moves the movable piece between an insertion completion position within the open space and a withdrawal completion position outside the open space. It works like a stretch,
The second cylinder device operates the parallelogram link to move the movable piece between the pull-out complete position and the escape position outside the tool attachment/detachment work area via the parallelogram link and the first cylinder device. 2. The frame opening device for a paper machine according to claim 1, wherein the frame opening device for a paper machine is telescopically moved so as to pivot with the . The first cylinder device engages with an engaging portion provided on the movable piece when the movable piece is between the pull-out complete position and the escape position, and the movable piece moves relative to the first cylinder device. 5. A frame opening device for a paper machine according to claim 4, further comprising relative movement preventing means for preventing free relative movement. When the movable piece is set at the insertion completion position, the movable piece is connected to upper and lower connecting portions provided respectively on the upper frame and the lower frame, thereby connecting the upper and lower frames and the movable piece. 6. A frame opening device for a paper machine according to any one of claims 2 to 5, further comprising coupling means for integral coupling.

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