JP4432620B2 - Sheet material drawing machine - Google Patents

Description

  The present invention relates to a drawing machine for a raw sheet-like material such as an optical film.

  Various types of conventional stretching machines are known.

  In particular, Japanese Patent Application Laid-Open No. 2003-111533 discloses that a sheet-like material is sandwiched between clips at intervals, and each sheet is moved with respect to opposite edges to stretch the sheet-like material. In order to reduce the thickness of an object, a plurality of moving bodies are provided that move in parallel with the opposing edges of the sheet-like object, and each moving body moves a clip individually and in the direction of each edge. Each moving body is provided with a separate drive source for moving in parallel with each edge, and when each moving body moves in parallel with each edge, each clip is A guide member that adjusts the movement in the direction of the edge is provided, and each moving body is individually connected to a plurality of endless stripes provided in parallel to each edge, and each endless stripe is driven by each drive. It is known to be driven individually by a source.

JP 2003-111533 A

  In Patent Document 1, each moving body provided with a clip is attached to each endless strip whose speed can be controlled by a servo motor, and further, the output of the driving source of each gas cylinder is connected to each moving body, The guide member is inclined so as to match the longitudinal and horizontal stretch ratios of the sheet-like material, and each endless body is moved at a constant speed, and the cam follower of each moving body is brought into contact with the guide member to form a sheet shape. The object is stretched in the transverse direction.

  In Patent Document 1, when a sheet-like material is stretched simultaneously in the vertical and horizontal directions, it is necessary to control the speed of each endless body by controlling each servo motor. In an actual apparatus, the length of the sheet-like material is required. Since it is necessary to provide a large number of clips in the direction, not only the mechanism is complicated, but also the control is complicated.

  As described above, according to Patent Document 1, it is possible to arbitrarily control the stretching ratio in the transverse direction (TD direction) and the stretching ratio in the longitudinal direction (MD direction) of the sheet-like material. It is complex and lacks feasibility.

An object of the present invention is to solve the above problems, it can stepless variable individually stretching ratio in the TD direction and the MD direction of the sheet, such as an optical film, yet significant cost reduction by simplifying the mechanism and control An object of the present invention is to provide a sheet stretcher that has been realized.

In order to achieve the above object, the present invention provides a linear motion guide that supports a slide arm 3 provided with a gripping device 2 for gripping the end of a sheet-like material at the inner end so as to be slidable in the TD direction of the sheet-like material. a plurality of rail 6, provided on both sides of the sheet side by side in the MD direction of the sheet, provided an endless link device 4 for moving the plurality of linear motion guide rail 6 in the MD direction, in the endless link device 4 A TD variable rail 7 for moving the slide arm 3 in the TD direction by moving the plurality of linear motion guide rails 6 in the MD direction is provided, and the linear motion guide rail 6 is connected to apexes of link plates 41 and 42. There are connected, providing a link mechanism 40 which is guided in the stationary rail 13 and MD variable rails 14, the TD variable rail Sheet wherein the slide arm 3 is moved in the TD direction was the link mechanism 40 according to the trajectory of the fixed rail 13 and MD variable rails 14 gripping the end portion in the gripping device 2 is moved in the MD direction in accordance with the locus of the A sheet-like material stretching machine, wherein the material is stretched in the TD direction and the MD direction .

According to the present invention, in the stretching machine of a sheet, you can stepless variable individually stretching ratio in the TD direction and the MD direction of the sheet, such as an optical film, yet significant cost reduction by simplifying the mechanism and control There is an effect that can be realized.

  Embodiments of a sheet-like material drawing machine of the present invention will be described with reference to the drawings.

[First Embodiment]
FIG. 1 is a schematic plan view showing a first embodiment of a sheet-like material drawing machine according to the present invention. FIG. 2 is a cross-sectional view of the endless link device in the sheet-like material drawing machine shown in FIG. FIG. 3 is a plan view showing a state in which each slide arm is movable in the TD direction according to the trajectory of the TD variable rail. FIG. 1 shows a specific first embodiment of the endless link device shown in FIGS. 4 and 5 as the endless link device. FIG. 3 shows a specific second embodiment of the endless link device shown in FIGS. 6 and 7 as the endless link device.

  A pair of endless link devices (a part of the link and one endless link are omitted in FIG. 1) 4 that move in the MD direction are provided on both sides of the original sheet 1 such as an optical film.

  A large number of slide arms (moving bodies) 3 are attached to linear motion guide rails 6 provided on the upper ends of the endless link devices 4 so as to be movable in a direction perpendicular to the edge of the original sheet 1 such as an optical film. On the other hand, it is mounted via the linear motion guide 5 shown in FIGS. That is, the endless link device 4 constitutes a drive source that moves each of the multiple slide arms 3 in the TD direction. Then, a clip (gripping device) 2 that holds the sheet-like material 1 is fixed to the front end of the sheet-like material, and the endless link device 4 serving as a driving source moves in the MD direction, so that the slide arm 3 in the TD direction is moved. Each slide arm 3 moves in the TD direction according to the trajectory of the TD variable rail 7 which is a TD variable means for restricting the movement. As a method for changing the TD variable rail 7 which is a TD variable means, for example, as shown in FIGS. 1 and 3, the bed 8b on which the rail is installed is changed in a divergent shape with respect to the traveling direction (MD direction). Used. That is, a TD variable rail 7 as a TD variable means is arranged on a bed 8b which is a top plate facing the bed 8a of the present apparatus, and a part of the top plate 8b is variable in the TD direction so as to spread toward the traveling direction. It is something to be made. The TD variable rail 7 and the slide arm 3 can be connected by arranging the bearing 9 so as to be sandwiched in the thickness direction of the TD variable rail 7 and fixing the central shaft 10 supporting the bearing 9 to the slide arm 3. is there. The position where the bearing 9 is disposed on the slide arm 3 is preferably the upper surface of the slide arm 3 facing the linear motion guide 5 connected to the lower surface of the slide arm 3. The reason is that the length of the slide arm 3 can be shortened as much as possible.

  The endless link device 4 includes a large number of link mechanisms 40 formed in a fold shape. Further, the endless link device 4 is driven by a sheet-like material entrance side sprocket 12a.

  Next, a specific first embodiment of the endless link device 4 will be described with reference to FIGS. A specific first embodiment of the endless link device 4 is a fixed link plate (support member) in which the fold-like link plates 41 and 42 are in the form of an isosceles triangle and the linear motion guide rail 6 is formed. 43 is arranged so as to be positioned at right angles to the edge of the original sheet 1 and the opening angle of the link plates 41 and 42 is changed. The fixed rail 13 and the MD variable rail 14 form a pair and vary the interval between the link plates (support members) 43. A link shaft 44 that is connected to the fixed link plate 43 on which the linear motion guide rail 6 is formed and is guided to the fixed rail 13 is provided at the connecting vertex position of the link plate 41 and the link plate 42 on the fixed rail side. Further, a link shaft 50 guided by the MD variable rail 14 is provided at a connecting point position of the link plate 42 and the link plate 41 on the MD variable rail side. A shaft 45 for stopping the rotation of the fixed link plate 43 is provided at the connection point of the chains 51 and 52. And in order for this axis | shaft 45 to stand steadily, the link 46 which connects between the intermediate point 48 of the link plate 41 and the axis | shaft 45, and the link 47 which connects between the intermediate point of the link plate 42 and the axis | shaft 45, Between the link 46 and the link plate 42 and between the link 47 and the link plate 41 is constituted by a parallel link mechanism. As a result, as the interval of the MD variable rail 14 with respect to the fixed rail 13 changes (narrows), the fixed link plate 43 on which the linear motion guide rail 6 is formed is supported by the link shaft 44 by the shaft 45. When the rotation is stopped and the opening angle of the link plates 41 and 42 together with the links 46 and 47 is changed, the interval in the MD direction of the fixed link plate 43 is changed and the sheet-like object 1 is extended in the MD direction. Become. The shaft 45 is configured to be slidable in the TD direction with respect to the fixed link plate 43.

  That is, the opening angle of the link plates 41 and 42 can be changed by the interval between the two guide rails 13 and 14, for example, the sheet-like object side (film side) guide rail 13 is fixed and the anti-sheet-like object side guide rail is fixed. 14 is varied to change the opening angle of the link plates 41 and 42. By changing the guide rail 14 on the side opposite to the sheet-like object, the pitch of the fixed link plate 43 changes, and the change in the MD direction becomes possible. Needless to say, the fixed link plate 43 and the fixed rail side link shaft 44 are fitted, while the fixed link plate 43 and the variable rail side shaft 45 have a slidable configuration. Further, since the above-described slide arm 3 is mounted on the fixed link plate 43 via the linear motion guide 5 and performs TD variable, it is necessary to maintain its accuracy. A fixed rail 13 having a certain distance was arranged.

  In the case of the configuration shown in FIGS. 2 and 5, a bearing roller 53 supported rotatably (freely) with respect to the link shaft 44 is connected to the lowermost end of the link shaft 44. The portion includes a pair of flanged radial bearings 54a and 54b, and the pair of flanged radial bearings 54a and 54b rolls on both side surfaces of the fixed guide rail 13 for restricting the movement of the link device, and the fixed guide The link device is configured to hold its own weight by contact between the upper surface of the rail 13 and the flanges of the flanged radial bearings 54a and 54b.

  In the case of the configuration shown in FIG. 5, a bearing roller 55 that is rotatably supported with respect to the link shaft 50 is connected to the lowermost end of the link shaft 50. A pair of flanged radial bearings 56a and 56b are provided, the pair of flanged radial bearings 56a and 56b roll on both side surfaces of the MD variable guide rail 14 for restricting the movement of the link device, and the MD variable guide rail 14 is configured to hold the weight of the link device by contact between the upper surface of 14 and the flanges of the flanged radial bearings 56a and 56b.

  In the case shown in FIG. 2, a bearing 31 that rolls on the side surface of the MD variable guide rail 14 is provided at the lower end of the link shaft 50, and a bearing 32 that rolls on the bed 8a and supports the weight of the link device is provided. It is done.

As described above, the link shaft 44 and the link shaft 50 are connected by the link plates 41 and 42 in a fold shape. For this reason, for example, as shown in FIGS. 10A and 10B, the crossing angle between the link plates 41 and 42 and the guide rails 13 and 14 with the folded link closed and opened. Even when θ5, θ61, and θ62 are different, the radial bearings 54a and 54b (or 56a and 56b) change ( turn) so as to be positioned perpendicular to the link shaft 44 (or 50 ) . That is, even if the crossing angles θ5, θ61, and θ62 between the link plates 41 and 42 and the guide rails 13 and 14 change according to the opening and closing of the folding link, the radial bearings 54a and 54b (or 56a and 56b) ) Is always rotated perpendicularly to both side surfaces of the guide rail by the action (rotation) of the bearing roller 53 (or 55), and the folding link mechanism 40 is connected to the guide rail 13, 14 and can travel at high speed.

  Further, the contact portions of the upper surfaces of the guide rails 13 and 14 and the flanges of the flanged radial bearings 54a and 54b (or 56a and 56b) have a substantially sliding frictional resistance, and the frictional resistance can be reduced.

  Therefore, the link device can be driven at a high speed without depending on the crossing angle and the guide width between the link plates 41 and 42 and the guide rails 13 and 14, the frictional resistance can be reduced, and the drag applied to the link shaft. Therefore, the link device can be made smaller and lighter, and a drawing machine advantageous for high speed can be realized.

  Next, a mechanism for changing the opening angle of the isometric link device by changing the distance between the two guide rails 13 and 14 will be described with reference to FIGS. 2 and 10 to 12. In the case shown in FIG. 2, the MD variable guide rail 14 is moved in the TD direction by the lead screw 34 using the motor power source 33. 10A shows a state where the MD magnification is 1.0, and FIG. 10B shows a state where the MD magnification is X times. The both sides of the moving guide rail 14 are sandwiched between a pair of rotating bodies (rotating motion cam mechanisms) 57a, 57b and 58a, 58b whose radii are changed in a spiral shape. For example, as shown in FIG. 57a and 57b maintain the initial state, and by rotating the rotating bodies 58a and 58b clockwise by 180 degrees, the moving guide rail 14 moves to the fixed guide rail 13 side, and the opening angle of the link devices 41 and 42 is increased. Becomes larger. Thereby, the sheet-like material 1 such as an optical film is stretched in the traveling direction (the gripping device 2 is omitted in the figure). Further, the opening angle of the link devices 41 and 42 depends on the rotation angle of the rotating bodies (rotating motion cam mechanisms) 58a and 58b, and can be arbitrarily adjusted steplessly, and a pair of rotating bodies 57a and 57b and 58a and 58b By making the engagement with the guide rail 14 free with respect to the horizontal direction of the guide rail 14, it is possible to cope with a deviation in the direction perpendicular to the rail moving direction. Furthermore, the guide rail can be disposed endlessly by using spring steel to connect the guide rail in a portion not shown in the drawing and the guide rail in the drawing.

  In this embodiment, the method of extending the sheet-like material 1 in the MD direction is shown. However, the rotating bodies 58a and 58b are fixed and the rotating bodies 57a and 57b are rotated clockwise to reduce the opening angle of the link device. By doing so, the sheet-like object 1 can be contracted. In addition, although the driving method of the rotators 57 and 58 is not shown in the drawing, an ordinary motor is connected via a speed reducer and driven, or the anti-film width direction rotators 57a and 58a are connected and synchronized. It is also possible to take.

  Therefore, according to the present embodiment, the MD magnification can be continuously changed, and a drawing machine suitable for a sheet-like material that requires fiber orientation control can be provided.

  Another embodiment in which the MD magnification is varied by changing the opening angle of the link devices 41 and 42 will be described with reference to FIGS. That is, in another embodiment, blocks 59 (59a, 59b), 60 (60a, 60b) fixed to the guide rails 13, 14 on the inner side surfaces of the guide rails 13, 14 and a movable central block (straight line) (Movement cam mechanism) 61 (61a, 61b) is configured in a state where the three blocks are connected, the central block 61 is a trapezoidal block having a short side on the sheet-like object entrance side, and the central block 61 is a shaft 62 (62a, 62b). The shaft 62 is configured to be slidable in the traveling direction of the sheet-like object 1. Then, by sliding the shaft 62 from the state shown in (a) to the state shown in (b), the moving guide rail 14 is pulled by the central block 61 and moved toward the fixing guide rail 13, and the link device 41. , 42 is widened to vary the MD magnification. In this embodiment, one set of blocks 59 to 61 is described, but actually, at least two sets of blocks are arranged on the inner side surfaces of the guide rails 13 and 14, and each central block 61 is connected by one shaft. Preferably it is done.

  In the embodiment shown in FIG. 11, a wedge-shaped inclined surface is formed on both the surface in contact with the block 59a and the surface in contact with the block 60a in the central block 61a. In the case of this embodiment, when the shaft 62a is slid in the traveling direction of the sheet-like material, it is necessary to further move the shaft 62a toward the fixing guide rail 13.

  However, as shown in FIG. 12, the inclined surface is not formed on the surface in contact with the block 59b in the central block 61b, but the inclined surface is formed on the surface in contact with the block 60b, so that the shaft 62b is moved in the traveling direction of the sheet-like material. It is only necessary to slide (linear motion).

  The shaft 62 (62a, 62b) can be driven by converting a rotational drive by a general motor into a linear motion. Further, the central block 61 and the block 60 or the central block 61 and the block 59 can be pulled by the shaft 62 by being coupled in a key shape as shown in FIG.

  As described above, in the first specific example of the endless link device, the MD changing means corresponds to a mechanism for changing the opening angle of the link devices 41 and 42.

  Next, a second specific example of the endless link device 4 will be described with reference to FIGS. A specific second embodiment of the endless link device 4 is a fixed link plate (support member) in which the fold-like link plates 71 and 72 have an isosceles triangle shape and the linear motion guide rail 74 is formed. 73 is arranged so that it is always positioned at right angles to the edge of the original sheet 1, and the opening angle of the link plates 71 and 72 is changed. The fixed rail 13 and the MD variable rail 14 form a pair and vary the interval between the link plates 73. The link plate 71 is provided so as to connect the link shaft 44 guided by the fixed rail 13 and the link shaft 50 guided by the MD variable rail 14. The link plate 72 is provided so as to connect between the link shaft 50 and the link shaft 75 provided at an intermediate point of the link plate 71. The fixed rail side of the fixed link plate 73 is connected to the link plate 71 by the link shaft 44. The MD variable rail side of the fixed link plate 73 is connected to the link shaft 50 so as to be slidable in the TD direction. Further, the link shaft 50 and the link shaft 50 are connected so as to be broken by a chain 51 and a chain 52. As a result, the fixed link plate 73 on which the linear motion guide rail 74 is formed is pivotally supported by the link shaft 44 as the interval of the MD variable rail 14 with respect to the fixed rail 13 changes (narrows). , 72 is changed, the interval of the fixed link plate 73 in the MD direction is changed, and the sheet-like object 1 is stretched in the MD direction. The link shaft 50 is configured to be slidable in the TD direction with respect to the fixed link plate 73.

  That is, the opening angle of the link plates 71 and 72 can be changed by the interval between the two guide rails 13 and 14, for example, the sheet-like object side (film side) guide rail 13 is fixed and the anti-sheet-like object side guide rail is fixed. 14 is varied to change the opening angle of the link plates 71 and 72. By changing the guide rail 14 on the side opposite to the sheet-like object, the pitch of the fixed link plate 73 changes, and the change in the MD direction becomes possible. Needless to say, the fixed link plate 73 and the fixed rail side link shaft 44 are fitted, while the fixed link plate 73 and the variable rail side link shaft 50 have a slidable configuration. Further, since the above-described slide arm (moving body) 3 is mounted on the fixed link plate 73 via the linear motion guide 5 and performs TD variable, it is necessary to maintain its accuracy. In contrast, a fixed rail 13 having a constant distance from the center is arranged.

  The configuration of the lowermost end of the link shaft 44 shown in FIG. 7 and the configuration of the lowermost end of the link shaft 50 are the same as the configuration shown in FIG. Of course, the configuration shown in FIG.

As described above, the link shaft 44 and the link shaft 50 are connected by the link plates 71 and 72 in a fold shape. For this reason, for example, as shown in FIGS. 10A and 10B, the crossing angle between the link plates 71 and 72 and the guide rails 13 and 14 with the folded link closed and opened. Even when θ5, θ61, and θ62 are different, the radial bearings 54a and 54b (or 56a and 56b) change ( turn) so as to be positioned perpendicular to the link shaft 44 (or 50 ). That is, even if the crossing angles θ5, θ61, and θ62 between the link plates 71 and 72 and the guide rails 13 and 14 change according to the opening and closing of the folding link, the radial bearings 54a and 54b (or 56a and 56b) ) Is always rotated perpendicularly to both side surfaces of the guide rail by the action (rotation) of the bearing roller 53 (or 55), and the folding link mechanism 40 is connected to the guide rail 13, 14 and can travel at high speed.

  Further, the contact portions of the upper surfaces of the guide rails 13 and 14 and the flanges of the flanged radial bearings 54a and 54b (or 56a and 56b) have a substantially sliding frictional resistance, and the frictional resistance can be reduced.

  Accordingly, the link device can be driven at a high speed without depending on the crossing angle and the guide width between the link plates 71 and 72 and the guide rails 13 and 14, the frictional resistance can be reduced, and the drag applied to the link shaft can be reduced. Therefore, the link device can be made smaller and lighter, and a drawing machine advantageous for high speed can be realized.

  As explained above, in the specific second embodiment of the endless link device, a mechanism for changing the opening angle of the link devices 71 and 72 corresponds to the MD variable means.

  Further, the structure of the bed 8 on which the fixed rail 13, the MD variable rail 14, the TD variable rail 7, etc. are installed may be either the structure shown in FIG. 8 or the structure shown in FIG. However, the structure shown in FIG. 9 is preferred. The reason is that a bed 8b such as a ceiling between the fixed rail 13 and the sheet-like object 1 such as an optical film can be provided with means for supporting the slide arm 3 so as to be movable in the TD direction and the MD direction. It becomes possible to assist the slide arm 3 in the vertical direction. Of course, a means for supporting the slide arm 3 so as to be movable in the TD direction and the MD direction may be provided on the bed 8a. The shape of the bed 8 may be based on the maximum sheet width on the outlet side in the case of FIG. 8, and may be based on the sheet shape at the maximum draw ratio in the case of FIG.

  As described above, according to the first embodiment of the sheet-like material drawing machine, the endless link device 4 is driven by, for example, a sheet-like material inlet-side sprocket 12a, and an open / close guide provided at the inlet or the like. The gripping device 2 is opened and closed by an opening / closing means (not shown) to grip the edge of the sheet-like material 1 and heated to a temperature required for stretching in the preheating section. Further, the opening angle of the folded link plates 41, 42 or 71, 72 of the endless link device 4 is gradually reduced with respect to the link shaft 44 and the fixed guide rail 13 guided by the fixed guide rail 13. By gradually widening from the relationship with the link shaft 50 guided by the MD variable guide rail 14, the interval between the slide arms 3 in the MD direction is gradually widened via the fixed link plates 43 and 73, thereby forming a sheet shape. At the same time that the article 1 is stretched in the MD direction, the slide arm 3 moves in the TD direction according to the trajectory of the TD variable rail 7 to stretch the sheet-like article 1 in the TD direction. As described above, the stretching ratio in the MD direction of the sheet-like object 1 can be determined by the distance between the fixed guide rail 13 and the MD variable guide rail 14, and the extension of the sheet-like object 1 in the TD direction can be determined by the locus of the TD variable rail 7. Since the magnification can be determined, it is possible to arbitrarily set the draw ratio in the MD direction and the draw ratio in the TD direction independently of each other so as to be compatible with various types of objects of the sheet-like material. Thereafter, a predetermined temperature is heat-fixed in the heat treatment section, rapidly cooled in the cooling section, and the gripping device 2 is opened and closed by an opening / closing means (not shown) such as an opening / closing guide provided at the outlet to remove the sheet. The sheet-like material 1 thus processed proceeds as it is. Further, the endless link device 4 is configured to be driven by the outlet side sprocket 12b and return to the inlet side sprocket 12a. The chain links 51 and 52 provided between the adjacent link shafts 50 also serve to limit the maximum pitch of the link mechanism 40 in the endless link device 4.

[Second Embodiment]
Next, a second embodiment of a sheet-like material stretching machine such as an optical film according to the present invention will be described with reference to FIGS. The second embodiment is different from the first embodiment in that the bed 8a ′ is oriented in the vertical direction and the endless link device 4 is provided in the vertical shape with the bed 8a ′ arranged, for example, each fixed link plate. (Support members) 43 'and 73' are formed in an L shape, and the linear motion guide rails 6 and 74 are attached to the upper surfaces of the fixed link plates 43 'and 73'. The intermediate sprocket 12c shown in FIG. 13 is for guiding and driving the endless link device 4.

  As described above, also in the second embodiment, the stretching ratio in the MD direction of the sheet-like material 1 can be determined by the distance between the fixed guide rail 13 and the MD variable guide rail 14, and the sheet can be determined by the locus of the TD variable rail 7. Since the stretching ratio in the TD direction of the product 1 can be determined, the stretching ratio in the MD direction and the stretching ratio in the TD direction can be arbitrarily set independently of each other so as to be compatible with various types of objects of the sheet-like material. Is possible.

  As described above, according to the second embodiment, it is possible to reduce the area to be installed in a plane.

[Third Embodiment]
Next, a third embodiment of a sheet-like material drawing machine such as an optical film according to the present invention will be described with reference to FIG. In the third embodiment, a linear drive source 83 is used as the drive source of the slide arm 3 to which the gripping device (clip) 2 for gripping the edge of the sheet-like object 1 is attached. That is, a large number of linear motion guide rails (support members) 80 for slidably guiding the slide arm 3 in the TD direction by the linear guide 5 are arranged endlessly arranged in the traveling direction on both sides of the sheet-like object 1 like the endless link device. Arranged in a shape (oval shape). Each end of each linear motion guide rail 80 is guided in the MD direction by each of an inner multi-motion guide (straight and curved motion guide) 82a and an outer multi-motion guide 82b. A mover 81 made of a magnet such as a permanent magnet is formed at the lower end of each linear motion guide rail 80, and a stator 82 made of an electromagnet or the like is disposed opposite to the mover 81 to thereby form a linear motor (linear drive source). ) 83 is formed. The inner multi-motion guide 84a and the outer multi-motion guide 84b are configured by connecting a linear motion guide and a curved motion guide at both ends. As described above, in the third embodiment, the drive source for moving the slide arm 3 in the traveling direction (MD direction) of the sheet-like material is configured by the linear motor (linear drive source) 83, and the stretching magnification in the TD direction is set. This is performed in accordance with the trajectory of the TD variable rail 7, and by changing the interval (pitch) in the traveling direction of the slide arm by controlling the stretching magnification in the MD direction by changing the driving speed of the linear motor 83. That is, each of a large number of linear motion guide rails (support members) 80 guided in the traveling direction by the inner multi-motion guide 84a and the outer multi-motion guide 84b moves each slide arm 3 through the linear motion guide 5 in the TD direction. It is slidably connected and is driven in the traveling direction of the sheet 1 by the thrust of the linear drive source 83. The MD can be varied steplessly by changing the linear drive speed. The TD variable can be varied steplessly independently of the MD variable by changing the trajectory of the TD variable rail 7.

  As the structure of the linear drive source 83, a linear drive source such as a face-to-face type, a horseshoe type, or a tunnel type is applicable. Further, since the linear drive source 83 can be installed below the bed 8a, it is possible to reduce the temperature countermeasures of the electromagnet and the sensing part that require attention in terms of temperature.

  As described above, in the third embodiment, the MD changing means corresponds to the control means for changing the linear driving speed.

Further, as described above, according to this embodiment, in the drawing machine of a sheet, you can stepless variable individually stretching ratio in the TD direction and the MD direction of the sheet, such as an optical film, moreover mechanism In addition, the cost can be greatly reduced by simplifying the control.

  Further, according to the first and second embodiments, in the sheet-like material drawing machine, basically, the slide arm is configured as an endless link device as a drive source for moving in the MD direction, so that the change with time is reduced. Is possible.

1 is a schematic plan view showing a first embodiment of a sheet-like material drawing machine according to the present invention. It is the figure which made the endless link apparatus cross section in the drawing machine of the sheet-like material shown in FIG. It is a top view which shows the state which each slide arm moves to TD direction according to the locus | trajectory of the TD variable rail which concerns on this invention. It is a top view which shows the specific 1st Example of the endless link apparatus which concerns on this invention. It is a fragmentary sectional view which shows the specific 1st Example of the endless link apparatus which concerns on this invention. It is a top view which shows the specific 2nd Example of the endless link apparatus which concerns on this invention. It is a fragmentary sectional view which shows the specific 2nd Example of the endless link apparatus which concerns on this invention. It is a figure for demonstrating the 1st Example of the structure of a bed by the relationship between the fixed rail which concerns on this invention, and a sheet-like thing. It is a figure for demonstrating the 2nd Example of the structure of a bed by the relationship between the fixed rail which concerns on this invention, and a sheet-like thing. It is a figure which shows the Example which changes MD magnification by changing the opening angle of the link apparatus which concerns on this invention. It is a figure which shows another Example which changes MD magnification by changing the opening angle of the link apparatus which concerns on this invention. It is a figure which shows another Example which changes MD magnification by changing the opening angle of the link apparatus which concerns on this invention. It is a schematic front view which shows 2nd Embodiment of the extending machine of the sheet-like material which concerns on this invention. FIG. 14 is a cross-sectional view of an endless link device in the sheet-like material drawing machine shown in FIG. 13 . It is a schematic front view which shows 2nd Embodiment of the extending machine of the sheet-like material which concerns on this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Sheet-like object, 2 ... Grabbing device (clip), 3 ... Slide arm (moving body), 4 ... Endless link device (drive source), 6 ... Linear motion guide rail, 7 ... TD variable rail (TD variable means) 8, 8a, 8b ... Bed (base), 9 ... Bearing, 10 ... Center shaft, 12a ... Inlet sprocket, 12b ... Outlet sprocket, 12c ... Intermediate sprocket, 13 ... Fixed guide rail, 14 ... MD variable guide rail, 31, 32 ... Bearings, 33 ... Power source, 34 ... Lead screw, 40 ... Link mechanism (MD variable means), 41, 42 ... Link plate, 43, 43 '... Fixed link plate (support member), 44 ... Link shaft 45, shaft, 46, 47 ... link, 50 ... link shaft, 51, 52 ... chain, 53, 55 ... bearing roller, 54, 56 ... radial bearing with flange, 7, 58 ... Rotating body, 59, 60 ... Block, 61 ... Central block, 62 ... Shaft, 71, 72 ... Link plate, 73, 73 '... Fixed link plate (support member), 74 ... Linear motion guide rail, 80 ... linear motion guide rail (support member), 81 ... mover, 82 ... stator, 83 ... linear motor (linear drive source), 84 ... multi-motion guide.

Claims (1)

A plurality of linear motion guide rails 6 that slidably support a slide arm 3 provided at the inner end with a gripping device 2 for gripping the end of the sheet-like material in the TD direction of the sheet-like material are provided on both sides of the sheet-like material. Provided side by side in the MD direction of the sheet-like material,
An endless link device 4 for moving the plurality of linear motion guide rails 6 in the MD direction;
A TD variable rail 7 is provided for moving the slide arm 3 in the TD direction by moving the plurality of linear motion guide rails 6 in the MD direction by the endless link device 4;
The linear motion guide rail 6 is connected to the connecting vertices of the link plates 41 and 42, and is provided with a link mechanism 40 guided to the fixed rail 13 and the MD variable rail 14.
The slide arm 3 is moved in the TD direction according to the trajectory of the TD variable rail 7, and the link mechanism 40 is moved in the MD direction according to the trajectories of the fixed rail 13 and the MD variable rail 14. A sheet-like material drawing machine, characterized in that a sheet-like material holding a part is drawn in the TD direction and the MD direction.

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