JP2008279568A - Cutting edge holder for slitter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cutting edge holder 16 for a slitter allowing safe replacement of a cutting edge 5 on the slitter with reduced labor and time for the cutting edge replacement work and having excellent position reproducibility of the attached cutting edge 5. <P>SOLUTION: A cutting edge support plate 27 is screwed to a cutting edge support face 21ba of a cutting edge holder main body 21 by a fixation knob 40 so as to be turnable by loosening the fixation knob 40. A groove to which the cutting edge 5 is inserted is formed on an abutment face of the cutting edge support plate 27 facing the cutting edge holder main body 21, and a magnet is embedded in the bottom face of the groove. When the cutting edge 5 is replaced, the fixation knob 40 is loosened and the cutting edge support plate 27 is turned toward a worker's side, so as to create a position facilitating the cutting edge replacement work. After replacement of the cutting edge 5, the cutting edge support plate 27 is returned to its original position, and the fixation knob 40 is fastened to fix the cutting edge 5. During turning of the cutting edge support plate 27, since the cutting edge 5 is attracted and held by the magnet, the possibility of dropping out is prevented. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a blade holder for holding a cutting blade in a slitter that cuts in a longitudinal direction while running a sheet-like material such as a film.

  Conventionally, as a blade holder for holding a cutting blade in a slitter, the cutting blade is pressed against a blade holder body attached to a support shaft provided in the width direction of the sheet-like material, and the cutting blade is cut with a plurality of set screws. Known is a structure that presses and fixes to the holder body, or a structure that presses the cutting blade against the blade holder body, places a pressing plate on it, and screws the pressing plate to the blade holder body. ing. However, in the conventional blade holder, the operation of exchanging the cutting blade is very complicated, and it takes time and labor. In other words, with the conventional blade holder, if the cutting blade is replaced on the slitter, it becomes difficult to work in a small place, and the parts such as the cutting blade and set screw are dropped and the machine underneath is removed. The blade cannot be safely replaced on the slitter, and it is unavoidable to remove the blade holder body holding the blade from the support shaft and replace the blade at another location. Then, the operation of attaching the blade holder main body to the support shaft was performed, which was very complicated.

  Also, with conventional blade holders, the same blade position cannot be obtained before and after replacement of the cutting blade, the blade holder fixing position must be changed, and the same position as before must be brought out, and work that requires intuition and hang It was. Further, since the work for removing the parts for fixing the cutting blades is performed, the removed parts such as the supporting parts for the cutting blade and the blade holder may be dropped or lost. In addition, since the removed blade support component may be replaced with a component of another blade holder, there is a problem of positional accuracy due to individual component differences. In addition, because the blade fixing posture is different, slitting is performed in a state where the contact position and blade angle between the sheet-like object and the blade edge are different, so that the angle and contact position are difficult to cut. There were various problems such that scraps after cutting were likely to adhere to the cut surface, and the frequency of blade replacement increased.

Japanese Laid-Open Patent Publication No. 2003-136468 proposes a leather attachment device that makes it possible to easily perform a cutting blade replacement operation. The leather attaching device proposed in this publication has a structure in which a receiving groove is formed on the side surface of an arm provided in the slitter, and a cartridge type holder is attached to the receiving groove and fixed by a lock mechanism. (Cutting blade) is detachably held using magnets and leaf springs, the holder is unlocked by operating the lock mechanism, the holder is removed from the arm, the holder leather is replaced, and the holder is again The leather can be easily replaced by attaching the arm to the arm and locking it with the lock mechanism. However, the leather attaching device described in this publication uses a cartridge-type holder and a lock mechanism for fixing the holder to the arm, so that the structure is complicated and expensive. In addition, the holder is once removed from the slitter and placed in another place. After replacing the leather, it was necessary to attach the holder again. Furthermore, after removing the holder from the arm, the holder may be lost, and the removed holder may be replaced with a holder of another arm, resulting in a problem of positional accuracy due to individual differences of each holder. There was also.
JP 2003-136468 A

  The present invention has been made to solve such problems, and by making it possible to safely replace the cutting blade on the slitter, it is possible to reduce the number and time of blade replacement work and to reproduce the position of the attached cutting blade. An object of the present invention is to provide a slitter blade holder having excellent properties.

  The present invention, which has been made to solve the above-mentioned problems, sandwiches the cutting blade between a blade holder main body having a blade supporting surface for pressing and attaching the cutting blade, and the blade supporting surface of the blade holder main body. A blade holding plate, and a fixing knob having a threaded portion that passes through the vicinity of one end of the blade supporting plate and is screwed into the blade holder main body, and tightening the blade supporting plate with the blade A fixing knob that allows the blade support plate to pivot by being fixed to the holder body and loosened, and the blade support plate includes a groove for inserting the cutting blade into a contact surface facing the blade holder body; A grit of the slitter blade holder is characterized in that a magnet is embedded in the bottom surface of the groove.

  Here, the cutting blade is a razor blade having positioning grooves at both ends, the blade support plate is provided with a positioning protrusion that fits into one positioning groove of the cutting blade at the back of the groove, and the blade holder body is It is preferable that a positioning hole that fits into the positioning projection of the blade support plate and a positioning pin that fits into the other positioning groove of the cutting blade are provided.

  In the blade holder of the present invention, by loosening the fixing knob slightly and turning the blade support plate around the threaded portion of the fixing knob, the cutting blade can be set to a replaceable position, and cutting is performed at that position. After replacing the blade, you can replace the cutting blade by turning the blade support plate to the original position and tightening the fixing knob, which can greatly reduce the number and time of blade replacement work. . When turning the blade support plate, the cutting blade is held in the groove provided in the blade support plate and attracted and held by the built-in magnet, so there is no risk of falling off, so you can rest assured on the slitter. The cutting blade can be replaced. Moreover, since it is not necessary to remove the parts when replacing the cutting blade, the removed parts are not dropped or lost, and the work can be performed with peace of mind from this point. Furthermore, since the cutting blade is held in a groove provided in the blade support plate, it is held at a fixed position with respect to the blade support plate, and the blade holder body and the blade support plate are always on the same surface. Therefore, the position reproducibility is not deteriorated due to differences in individual parts, and the blade position reproducibility after replacement of the cutting blade is high. For this reason, it is not necessary to change the position of the blade holder body before and after exchanging the cutting blade, and anyone can easily perform the exchanging operation. In addition, the blade fixing posture is uniquely determined, and it is possible to set the contact angle of the sheet-like object and the blade edge, and the blade angle all at the same position, so it is difficult for scrap after cutting to adhere to the cutting surface of the cutting blade, Reduction of cutting blade replacement frequency can be expected. Furthermore, the blade holder of the present invention is composed of a blade holder main body, a blade support plate provided with a magnet, and a fixing knob for fixing the blade support plate to the blade holder main body. The number of parts is small and it can be manufactured at a low price.

  Here, the blade support plate is provided with a positioning projection that fits into one positioning groove of the cutting blade at the back of the groove, and the blade holder body has a positioning hole that fits into the positioning projection of the blade support plate and the cutting If a configuration is provided with a positioning pin that fits into the other positioning groove of the blade, the mounting position of the cutting blade with respect to the blade holder body can be positioned more accurately, and the blade position reproducibility can be further enhanced.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the invention shown in the drawings will be described. FIG. 1 is a schematic configuration diagram of a slitter provided with a blade holder according to an embodiment of the present invention, where 1 is a sheet-like object to be slit, 2 is a raw roll that feeds out the sheet-like object 1, and 3 is A roller for conveying a sheet-like material, 4 is a blade positioning device for positioning and fixing a blade holder holding a cutting blade 5 for slitting the sheet-like material 1 at a desired position in the width direction of the sheet-like material, 6 It is a winding roll which wound up the sheet-like material cut | disconnected by the predetermined width. The sheet-like material 1 drawn out from the original fabric roll 2 is slit to a predetermined width by a plurality of cutting blades 5 disposed at positions separated in the width direction of the sheet-like material while being conveyed by the roller 3, and is taken up by a winding roll. 6 is wound up to form 6. Here, the width of the sheet-like material wound around the winding roll 6 can be adjusted by adjusting the position of the cutting blade 5.

  The blade positioning device 4 positions and fixes the cutting blade 5 at a desired position in the width direction of the sheet-like object 1. 2 is a schematic front view of the blade positioning device 4, FIG. 3 is a schematic front view of a partial region of the blade positioning device 4, and FIG. 4 is a schematic plan view showing a part of the portion shown in FIG. 5 is a schematic cross-sectional view taken along the line AA in FIG. The blade positioning device 4 includes a support shaft 11 held by a side frame (not shown) of a slitter, a support block 12 held by the support shaft 11, and a sheet to be attached to the support block 12 and to be slit. A slide guide 14 arranged in a direction perpendicular to the traveling direction of the sheet 1 (that is, in the width direction of the sheet-like object), and a plurality of blades held by the slide guide 14 so as to be movable and holding the cutting blade 5 A holder 16 and blade holder moving means 18 for moving the blade holder 16 along the slide guide 14 are provided. An angle adjusting mechanism (not shown) for rotating the support shaft 11 is connected to the support shaft 11 so that the cutting angle of the cutting blade 5 with respect to the sheet-like object 1 can be changed.

  The blade holder 16 includes a blade holder main body 21 for holding the cutting blade 5, a pair of slide blocks 22 and 22 attached to the blade holder main body 21 and held movably by the slide guide 14, and the pair of slide blocks A lock member 23 disposed so as to be able to press against the slide guide 14 at an intermediate position between the slide blocks 22, 22, and held at the blade holder body 21, a position away from the slide guide 14, and the blade holder body Locking member driving means 24 such as an air cylinder is provided to move 16 to a position pressed against the slide guide 14 so as to fix the slide guide 14 to the slide guide 14.

  As shown in FIG. 9, the blade holder main body 21 is an L-shaped angle member including a first portion 21 a arranged in parallel to the slide guide 14 and a second portion 21 b extending at right angles from one end of the first portion 21 a. The pair of slide blocks 22 and 22 are attached to the first portion 21 a, the cutting blade 5 is pressed against the outer surface 21 ba of the second portion 21 b, and attached by being sandwiched by the blade support plate 27. The outer surface 21ba acts as a blade support surface for pressing and attaching the cutting blade 5, and is hereinafter referred to as a blade support surface. Details of the mounting structure of the cutting blade 5 will be described later. As described above, the blade holder main body 21 is made of a generally used L-shaped angle material having excellent perpendicularity, so that the first portion 21a is attached in parallel to the slide guide 14 and the blade support surface 21ba of the second portion 21b. Can be made parallel to the conveying direction of the sheet-like object 1, and therefore the mounting angle of the cutting blade 5 can always be parallel to the conveying direction of the sheet-like object 1. It is difficult for cutting waste to adhere to the blade surface, and the sheet-like object 1 can be cut well over a long period of time.

  The slide guide 14 and the slide block 22 described above have a structure in which the slide block 22 is constrained so that it can move in the longitudinal direction of the slide guide 14 but cannot move in the direction perpendicular thereto. With this structure, the blade holder 16 can be fixed so as not to move along the slide guide 14 by pressing the lock member 23 against the slide guide 14 with a certain pressing force. Here, since the lock member 23 is configured to be pressed against the slide guide 14 at an intermediate position between the pair of slide blocks 22 and 22, even when the lock member 23 is pressed against the slide guide 14 and the blade holder 16 is fixed. The first portion 21a of the blade holder main body 21 is kept parallel to the slide guide 14, and therefore the posture of the blade holder main body 21 hardly changes. For this reason, the blade support surface 21ba of the second portion 21b of the blade holder body 21 and the cutting blade 5 provided in contact with the second portion 21b are hardly tilted. Therefore, the blade holder 16 is fixed when the blade holder 16 is fixed. It hardly occurs that the posture changes and the position of the cutting edge of the cutting blade 5 changes, or the cutting blade 5 is inclined with respect to the traveling direction of the sheet-like object 1. Therefore, by positioning the blade holder 16 at a predetermined position and fixing it at that position, the cutting edge of the cutting blade 5 can be accurately positioned at a predetermined position and fixed without being tilted. The pressing force of the locking member 23 against the slide guide 14 may be determined so that the blade holder 16 does not move due to mechanical vibration or external force. For example, in a normal use situation, the blade holder 16 is approximately parallel to the slide guide 14. It is preferable that it is determined not to move even if a force of about 4.0 kgf is applied, and in order to lock in accordance with this, the pressing force may be set to about 24.0 kgf or more.

  The blade holder moving means 18 that moves the blade holder 16 along the slide guide 14 includes a positioning block 31 that can move in parallel to the slide guide 14 and a positioning block that moves the positioning block 31 in parallel to the slide guide 14 to a desired position. The moving means 32 and the positioning block 31 are provided in the positioning block 31. When the positioning block 31 moves, the blade holder 16 can be pushed and moved so that the blade holder 16 can be moved, and the pressing pin 33 is attached to the blade holder 16. A push pin moving means 34 such as an air cylinder is provided to move the contact position to the retracted position that does not contact the blade holder 16. Since the push pin 33 is moved to the operating position and the retracted position in this way, the positioning block 31 can be moved to a desired position without interfering with the plurality of blade holders 16 in the state where the push pin 33 is in the retracted position. That is, the blade holder 16 can be moved in the vicinity of the blade holder 16 to be moved, and then the blade holder 16 is pushed by the push pin 33 by moving the positioning block 31 with the push pin 33 positioned at the operating position. Can be moved.

  Here, the mounting position of the push pin 33 is determined so as to be able to contact and push a part of the blade holder 16 when the positioning block 31 moves in any direction. That is, in this embodiment, as shown in FIG. 6D, when the positioning block 31 moves to the right, the push pin 33 comes into contact with the inner surface of the second portion 21b of the blade holder body 21 and moves it. When the positioning block 31 moves to the left as shown in FIG. 7C, the push pin 33 comes into contact with the blade support surface of the second portion 22b of the blade holder body 21 and presses it. It is determined to push. The position where the push pin 33 pushes the blade holder 16 is not limited to the second portion 21b as in the illustrated embodiment, and may be any other position. Instead of pressing directly, a member for pressing the blade block main body 21 with the pressing pin 33 may be attached at an appropriate position. As described above, when the blade holder 16 is moved by the positioning block 31, the push pin 33 simply contacts the blade holder 16 and presses the blade holder 16, so that excessive force is applied to the blade holder 16 and the blade holder moving means 18. Thus, the blade holder 16 can be accurately moved to a predetermined position. Note that if the push pin 33 pushes the blade holder 16 to move to a predetermined position and stops at that position, if the deceleration is large, the blade holder 16 may overrun. By setting this deceleration small, the blade Overrun of the holder 16 can be prevented and stopped at a predetermined position. Further, overrun can be prevented by appropriately increasing the movement resistance when the blade holder 16 moves the slide guide 14.

2 to 5, the positioning block moving means 32 is not limited in its structure as long as the positioning block 31 can be moved to a desired position parallel to the slide guide 14 and stopped. In this embodiment, a rodless cylinder including a screw shaft 36, a position control motor 37 that rotationally drives the screw shaft 36, and a mover 38 that moves parallel to the screw shaft 36 by the rotation of the screw shaft 36 is provided. The moving element 38 is connected to the positioning block 31. As such a rodless cylinder, a small structure with a simple structure is commercially available at a low cost. By using this, it is possible to reduce the cost of the apparatus, simplify the structure, and reduce the size. Note that commercially available inexpensive rodless cylinders employ a rolled ball screw, and an error may occur in the stroke because of a screw pitch error. In this case, as shown in FIG. 8, an error δ (for example, about 0.76 mm at the maximum for 1 m stroke) occurs in the correlation between the stroke command value and the actually measured stroke value, and the positioning accuracy deteriorates as it is. In order to deal with this problem at a low cost, the error δ measured in advance with respect to the stroke command value is replaced with the approximate straight line 40, and the stroke command value can be added as a correction amount to realize a substantially accurate stroke accuracy. The rodless cylinder used by the present inventors had an error as shown in FIG.
y = 0.007x + 0.07
It was confirmed that the maximum deviation after correction can be suppressed to 0.09 mm by replacing the correction amount approximate curve 40 with the correction value and correcting the command value.

  Next, the attachment structure of the cutting blade 5 to the blade holder body 21 will be described. 9 is a schematic perspective view of the blade holder main body 21 and the blade support plate 27 attached thereto, FIG. 10A is a schematic perspective view of the blade support plate 27, and FIG. 9B is a schematic perspective view of the blade support plate 27 and the cutting blade 5. FIG. 11C is a schematic perspective view of the blade support plate 27 with the cutting blade 5 attached. FIGS. 11A, 11B, and 11C are views of the cutting blade 5 when the blade support plate 27 is turned. FIG. 12A is a schematic cross-sectional view taken along the line B-B of FIG. 11A, and FIG. 12B is a diagram illustrating the blade support plate from the state of FIG. 12A. It is a schematic sectional drawing shown in the state rotated a little. A blade support plate 27 is attached to the blade support surface 21ba of the second portion 21b of the blade holder body 21 by a fixing knob 41. The fixing knob 41 includes a threaded portion 41a that is rotatably inserted into a through hole 27b formed in the blade support plate 27 and screwed into the blade holder body 21. By loosening this, the blade support plate is provided. 27 can be swiveled around the screw portion 41a.

  The blade support plate 27 is for holding the cutting blade 5 between the blade support surface 21ba of the blade holder body 21 and is provided on the contact surface 27a of the blade support plate 27 to the blade holder body 21. Is formed with a groove 27c for accommodating the cutting blade 5 so that the cutting blade 5 can always be mounted at the same position. The width of the groove 27c is set substantially equal to the width of the cutting blade 5 (the dimension in the direction perpendicular to the blade) so that the cutting blade 5 can be accommodated without rattling. Further, the depth of the groove 27c is set slightly smaller than the thickness of the cutting blade 5, whereby the cutting blade 5 is separated from the blade support surface 21ba of the blade holder body 21 and the bottom surface of the groove 27c of the blade support plate 27. Can be held firmly. A magnet 42 is embedded in the bottom surface of the groove 27 c, and the cutting blade 5 placed in the groove 27 c can be attracted and held by the magnet 42. A leather blade is used as the cutting blade 5, and semicircular positioning grooves 5a and 5a are formed at both ends thereof. A positioning projection 27d that fits into one positioning groove 5a of the cutting blade 5 is formed in the back of the groove 27c of the blade support plate 27. The positioning projection 27d is formed to be slightly higher than the contact surface 27a of the blade support plate 27, and the blade support surface 21ba of the blade holder body 21 has a positioning hole 21bb that can be fitted to the positioning projection 27d. Is formed. A positioning pin 43 that fits into the other positioning groove 5a of the cutting blade 5 is also attached to the blade support surface 21ba of the blade holder body 21.

  The attachment position of the fixing knob 41 with respect to the blade holder body 21 and the formation position of the through hole 27b formed in the blade support plate 27 are determined by an operator who performs blade replacement work with the blade holder 16 attached to a predetermined position of the slitter. A state in which the blade support plate 27 is exposed in an operating position shown in FIG. 11 (a), that is, a partial region on one end side of the cutting blade 5 so as to cut the sheet-like material in the vicinity of the end on the side to be accessed. 11 (b) and 11 (c), the blade is rotated toward the front (leftward in FIG. 11), and the blade replacement position, that is, the blade support plate 27 shown in FIG. 11 (c). Is positioned so as to be able to turn to the blade replacement position where the exposed region of the cutting blade 5 is on the upper side, while being pushed against the positioning pin 43 and prevented from further turning. A handle 45 is attached to the blade support surface of the blade support plate 27. As the material of the blade holder main body 21 and the blade support plate 27, a metal material having high rigidity such as a general structural steel material is used so as not to be deformed, and in particular, the portion touching the cutting blade 5 affects the mounting accuracy. It is preferable to use a surface-cured product.

  Next, the exchange operation of the cutting blade 5 in the blade holder 16 having the above configuration will be described. First, the fixing knob 41 is slightly loosened, the handle 45 of the blade support plate 27 is held, and it is turned toward the front as shown in FIGS. 11 (b) and 11 (c). As a result, the cutting blade 5 comes out before coming into contact with the magnet 42 built in the blade support plate 27, so that the cutting blade 5 is removed. At the time of this turning, the cutting blade 5 is attracted and held by the magnet 42 and accommodated in the groove 27c, so there is no possibility of dropping off. Next, the new cutting blade 5 is attached to the groove 27 c of the blade support plate 27. At this time, the cutting blade 5 sticks to the magnet 42 and is accommodated in the groove 27c, so there is no risk of dropping. Thereafter, the handle 45 of the blade support plate 27 is held and turned back to the original position. At this time, as shown in FIG. 12B, since the positioning projection 27d slides and moves on the blade support surface 21ba of the blade holder body 21, a minute amount is formed between the blade support surface 21ba and the blade support plate 27. There is a gap, and therefore there is no gap between the blade support surface 21ba and the cutting blade 5, and there is no trouble that the cutting blade 5 is rubbed by the blade support surface 21ba and jumps out of the groove. The support plate 27 can be rotated stably. When the blade support plate 27 is further swung, the positioning protrusion 27d is fitted into the positioning hole 21bb, and at the same time, as shown in FIG. 11A, the bottom of the cutting blade 5 held by the blade support plate 27. The positioning groove 5 a on the side is fitted to the positioning pin 43. Thereby, the cutting blade 5 and the blade support plate 27 are positioned with high accuracy at a predetermined position with respect to the blade holder body 21. Thereafter, by tightening the fixing knob 41, the cutting blade 5 is sandwiched and fixed between the blade support plate 27 and the blade holder body 21. As described above, the cutting blade 5 can be easily replaced without dropping off, and the cutting blade 5 can always be attached to the blade holder body 21 at a fixed position with high accuracy.

  As described above, in the blade holder 16 according to this embodiment, the cutting blade 5 can be replaced on the slitter, and the number and time of blade replacement can be greatly reduced. Further, when the blade support plate 27 is turned, the cutting blade 5 is held in the groove 27c provided in the blade support plate 27 and is attracted and held by the built-in magnet 42. When replacing the cutting blade, it is not necessary to remove the component, so that the removed component is not dropped or lost. Therefore, the cutting blade can be replaced safely on the slitter. Further, the cutting blade 5 is held at a fixed position with high precision with respect to the blade support surface 21ba and the blade support plate 27 of the blade holder body 21, and the blade holder body 21 and the blade support plate 27 are always cut on the same surface. Since the blade is fixed, there is no decrease in position reproducibility due to component differences, and the blade position reproducibility after replacement of the cutting blade is high. For this reason, it is not necessary to change the position of the blade holder main body 21 before and after cutting blade replacement, and anyone can easily perform the replacement work. In addition, since the blade fixing posture is uniquely determined, it becomes possible to set the contact angle and the blade angle of the sheet-like object 1 and the blade tip to the same position for the plurality of blade holders 16, and after cutting on the cutting surface of the cutting blade Various effects are obtained such that it is difficult for the scraps to adhere and the cutting blade replacement frequency can be reduced.

  Next, the blade positioning operation by the blade positioning device 4 will be described with reference to FIGS. 6 and 7 are schematic front views for explaining the blade positioning operation by the blade positioning device 4. When performing the blade positioning operation, the sheet-like object 1 is not passed under the blade positioning device 4, but for convenience of explanation, the sheet-like object 1 is illustrated. Now, as shown in FIG. 6 (a), a plurality of blade holders 16 are fixed at appropriate positions in the width direction of the sheet-like object 1, and an operation for positioning them at a predetermined position is performed. And First, as shown in FIG. 6B, the positioning block moving means 32 moves the positioning block 31 with the push pin 33 of the positioning block 31 in the retracted position, and the blade holder 16 has the push pin 33 at the right end. The second portion 21b is stopped at a position on the left side. At this time, since the push pin 33 is in the retracted position, it can be moved to a desired position without interfering with the blade holder 16. Next, as shown in FIG. 6C, the push pin moving means 34 pushes the push pin 33 to a position where it can contact the second portion 21 b of the blade holder 16 (operating position). Thereafter, the lock member driving means 24 (see FIG. 4) of the blade holder 16 moves the blade holder 16 free by moving the lock member 23 away from the slide guide 14, and the positioning block moving means 32 as shown in FIG. 6 (d). Moves the positioning block 31 to the right and pushes the blade holder 16 with the push pin 33 to move it to the left end region of the slide guide 14. Thereafter, the same operation is repeated for the other blade holders 16, and the plurality of blade holders 16 are once collected in the right region as shown in FIG. In these operations, when the plurality of blade holders 16 are moved and positioned at predetermined positions in the subsequent steps, all the blade holders 16 are fed in the same direction, and the screw of the positioning block moving means 32 is moved. This is to avoid the influence of the backlash of the shaft and perform accurate positioning.

  Next, the push pin 33 is retracted, and the positioning block 31 is moved so that the push pin 33 is positioned on the right side of the second portion 21b of the blade holder 16 at the left end, as shown in FIG. The push pin 33 is pushed out to a position (operation position) where the push pin 33 can come into contact with the second portion 21 b of the blade holder 16. Thereafter, in a state in which the lock member 23 of the blade holder 16 is separated from the slide guide 14, as shown in FIG. 7C, the positioning block moving means 32 moves the positioning block 31 to the left and is preset. Stop in place. As a result, the push pin 33 pushes the blade holder 16 and stops the blade holder 16 at a predetermined position. At this time, since the push pin 33 merely pushes the blade holder 16, an excessive force is not applied to the push pin 33, the blade holder 16, the positioning block moving means 32, etc. Can be stopped in position. After the blade holder 16 stops, the lock member driving means 24 (see FIG. 4) of the blade holder 16 presses the lock member 23 against the slide guide 14 to lock it. Thereby, the blade holder 16 is fixed to the slide guide 14. Here, as can be clearly understood from FIG. 4, the lock member 23 is pressed against the slide guide 14 at an intermediate position between the pair of slide blocks 22 and 22, so that the lock member 23 is pressed against the slide guide 14 and the blade holder. Even when 16 is fixed, the posture of the blade holder 16 hardly changes. Therefore, the cutting edge of the cutting blade 5 can be accurately positioned at a predetermined position and fixed without being tilted.

  After positioning and fixing for one blade holder 16, the same operation is performed for the other blade holders 16. As described above, as shown in FIG. 7D, the plurality of blade holders 16 can be automatically positioned and fixed at predetermined positions automatically.

  The preferred embodiment of the present invention has been described above, but the present invention is not limited to this embodiment, and can be appropriately changed within the scope of the claims. For example, in the embodiment, the blade holder main body 21 has a structure including the first portion 21a and the second portion 21b perpendicular to the first portion 21a. However, the structure of the blade holder main body 21 is not limited thereto, and includes a blade support surface. If so, the shape is arbitrary. In the embodiment, the blade holder 16 is provided in the blade positioning device 4 that can be automatically moved and fixed to a desired position. However, the blade holder of the present invention is provided in the embodiment. It is not limited to the case of providing the blade positioning device 4 having the configuration shown above, and may be provided in a blade positioning device having a configuration in which the blade holder is automatically moved to a desired position and fixed by other methods, and further, manually. You may provide in the apparatus of the structure made to move.

The schematic block diagram of the slitter provided with the blade holder which concerns on embodiment of this invention Schematic front view of the blade positioning device provided in the slitter shown in FIG. Schematic front view of a partial area of the blade positioning device FIG. 3 is a schematic plan view showing a part of the blade positioning device shown in FIG. FIG. 3 is a schematic cross-sectional view taken along line AA (A), (b), (c), (d) is a schematic plan view showing the procedure for positioning by moving the blade holder with the positioning block. (A), (b), (c), (d) is a schematic plan view showing the procedure for positioning by moving the blade holder with the positioning block. Graph showing the relationship between position command value and error in rodless cylinders The schematic perspective view of the blade holder main body of the blade holder which concerns on embodiment of this invention, and the blade support plate attached to it (A) is a schematic perspective view of a blade support plate, (b) is a schematic perspective view of a blade support plate and a cutting blade, (c) is a schematic perspective view of a blade support plate with a cutting blade attached thereto. (A), (b), (c) is a schematic front view explaining the operation | movement which rotates a blade support plate and performs replacement | exchange of a cutting blade. 11A is a schematic cross-sectional view taken along the line B-B in FIG. 11A, and FIG. 11B is a schematic cross-sectional view showing the blade support plate rotated slightly from the state shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Sheet-like material 2 Original fabric roll 3 Roller 4 Blade positioning device 5 Cutting blade 6 Winding roll 11 Support shaft 12 Support block 14 Slide guide 16 Blade holder 18 Blade holder moving means 21 Blade holder main body 21a First part 21b Second part 21ba Blade support surface 22 Slide block 23 Lock member 24 Lock member drive means 27 Blade support plate 27a Contact surface 27b Through hole 27c Groove 27d Positioning projection 31 Positioning block 32 Positioning block moving means 33 Push pin 34 Push pin moving means 36 Screw shaft 37 Position control motor 38 Mover 41 Fixing knob 41a Screw part 42 Magnet 43 Positioning pin 45 Handle

Claims (2)

  A blade holder main body having a blade support surface for pressing and attaching the cutting blade, a blade support plate for holding the cutting blade between the blade support surface of the blade holder main body, and the blade support plate A fixing knob having a threaded portion that passes through the vicinity of one end of the blade and is screwed into the blade holder body, and the blade support plate is fixed to the blade holder body by tightening and loosened to support the blade. A fixing knob that allows the plate to turn, and the blade support plate has a groove for inserting the cutting blade in a contact surface facing the blade holder body, and a magnet is embedded in the bottom surface of the groove. Characteristic slitter blade holder.   The cutting blade is a razor blade having positioning grooves at both ends, and the blade support plate includes a positioning projection that fits into one positioning groove of the cutting blade at the back of the groove, and the blade holder body The slitter blade holder according to claim 1, further comprising a positioning hole that fits into a positioning projection of the blade support plate and a positioning pin that fits into the other positioning groove of the cutting blade.

Images