JP2004195618A - Travel sheet horizontally cutting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a miniaturized long sheet-like material cutting device for quickly determining a knife incident angle at sheet horizontally cutting time and next time cutting time. <P>SOLUTION: The knife incident angle is set according to a travel speed of a sheet and a knife, and the knife is rotated at a prescribed angle on the sheet other end side after cutting the sheet, and the knife incident angle of next time is set. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【００３９】
上記テストの結果、計算上の理想角度での切断となり、切断状況は何れも良好であった。従来の切断方法はナイフの入射角度が固定されており、各シート走行速度と合致していない為、シートの切口も悪く、切断に失敗することもあった。
【００４０】
【発明の効果】
請求項１の発明では、シートの走行速度およびナイフの走行速度に応じて、シート走行方向に対するナイフ入射角度を設定することにより、ナイフによる走行シートの切断状況が良好となり、ナイフの往路、復路共にシート切断が可能となり、切断作業をしないナイフの無駄な帰還装置を不要とし、設備が小型化され、設置コストが低下され、走行するシートの切断が確実に実施可能となり、製品の歩留とシート切断装置を取付けた塗工機等の作業機械の稼働率が大幅に改善された効果を奏する。またシート切断ストロークの最路時点でナイフを所定角度回動することによりシート切断装置の小型化の実現可能とする効果を奏する。
【００４１】
請求項２の発明では、シート走行速度に応じてナイフの入射角度を自動的に設定することにより、ナイフ入射角度の設定が迅速、確実となり、シートの歩留の向上と作業機械の稼働率の向上が一段と可能となる効果を奏する。
【００４２】
請求項３の発明では、ナイフの刃先角度を所定角度範囲とすることにより、シート横切断作業が確実となり、シートの歩留と作業機械の稼働率との向上が更に向上する効果を奏する。
【００４３】
請求項４の発明では、シート切断装置小型化が実施可能となり、各種のシート切断作業機械に装着可能となり、更に巻取の交換以外のシートの連続切断作業の完全自動化も可能となり、切断されるシートの歩留と作業機械の稼働率との向上に測り知れない効果を奏する。
【図面の簡単な説明】
【図１】シート切断装置の位置関係実施例を示す塗工機の略示側面図である。
【図２】シート切断装置とシートとの取付関係実施例を示す部分拡大斜視図である。。
【図３】走行架台端より見たシート切断装置実施例の拡大側面図である。
【図４】走行架台側面より見たシート切断装置実施例の部分拡大立面図である。
【図５】ナイフ入射角度説明図である。
【図６】ナイフ刃先角度説明図である。
【図７】ナイフ回動線図である。
【符号の説明】
１ 繰出部
２ 塗工部
３ ドライヤ
４ 巻取部
５ 繰出側シート切断装置
６ 巻取側シート切断装置
７ シート
８ 走行架台
９ 走行体
１０ ナイフ支持体
１１ ナイフ
１２ ナイフ側ギア（ナイフ側係合体）
１３ ナイフ支持体軸
１４ モータ側ギア（モータ側係合体）
１５ 回動モータ
１６ 支持ロール
Ａ シート走行方向
Ｂ ナイフ走行方向
α ナイフ入射角度
β ナイフ刃先角度[0001]
TECHNICAL FIELD OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutting device that is mounted for the purpose of transversely cutting a long sheet-like material represented by paper, a polymer film, a metal foil and the like.
[0002]
[Prior art]
There are many conventional means for cutting a long sheet typified by paper, a polymer film, a metal foil or the like in the transverse direction (for example, see Patent Documents 1, 2, and 3).
In particular, it is widely used in the field of coating machines installed for the purpose of applying and drying a liquid paint on a sheet. A coating machine is a device in which a roll of a sheet (hereinafter referred to as a roll) is mounted on a feeding device provided inside the coating machine, the sheet is continuously fed, and a liquid paint is applied to the sheet surface. This is a general term for equipment for drying and rewinding the sheet with a winding device (for example, see Patent Documents 4 and 5).
In the conventional coating machine, the application of the winding and the rewinding are completed, the coating machine is temporarily stopped, the winding is removed, and the winding for the next coating is mounted on the feeding device, and the winding is performed again. Although the cycle of restarting the coating operation was repeated, the operation rate was low due to repeated stopping and starting, which was a problem.
However, due to recent advances in technology, the winding machine to be applied next is mounted in advance on the feeding device, and the coating machine is stopped by automatically gluing and connecting the old winding and the new winding. It became possible to drive continuously without any.
Further, after the winding of the old winding is completed, the winding device can automatically wind the sheet on the new winding shaft, and a large improvement in the operation rate has been achieved (for example, see Patent Document 4). .).
In the above-described continuous operation process, it is necessary to cut the rear end of the old wound sheet at the time of pasting the sheet between the old winding and the new winding in the feeding section. Also, in the winding section, it is necessary to cut the rear end of the sheet traveling on the old winding shaft in order to wind the sheet after coating on the new winding shaft. This means that the running sheet is cut. Conventionally, the sheet is usually cut by pressing a saw blade-shaped knife into the running sheet at a stretch over the entire width of the sheet. However, in the above cutting method, the cut portion of the sheet is jagged, and by winding the cut end of the cut sheet on the new winding shaft as it is, folding, wrinkles, irregular overlapping of the end of the sheet, etc. The sheet that is generated and subsequently rolled on it has an uneven pressing die due to the effect of poor tip winding, resulting in a sheet that does not become a flat roll and does not become a considerable amount of product. This has been a major factor in the drop in retention. Also, in the feeding section, the cut end of the sheet in the cutting section is torn, separated, and the broken pieces enter the coating section, thereby causing coating abnormality, which is also a major factor in lowering the yield. The solution of the trouble has been a problem (for example, see Patent Document 2).
In order to solve the above-mentioned problem, in recent years, as a method of cutting a running sheet, a method of cutting a sheet by a traveling knife by moving a knife in a transverse direction from an end of the sheet has been gradually spread. In this method, the sheet cutting portion is not jagged, but is straight, and from one sheet end to the other end, it is cut in a substantially right triangle with respect to the sheet flow direction, The cut sheet tip is spirally wound around the new winding shaft.
The winding start state at the winding section by the cutting method is such that the sheet is not bent, overlapped, wrinkled, etc., and the sheet subsequently wound thereon is not affected by the lower winding, and the step is improved. It is a well-known fact that it has made a great contribution (for example, see Patent Document 1).
The most important means for cutting the sheet by moving the knife in the transverse direction with respect to the running sheet is the incident angle α of the knife with respect to the running sheet when the running speed of the knife is constant. (See FIG. 5). Assuming that the sheet speed is constant, for example, as the knife incident angle α does not match the sheet speed and the knife incident angle α approaches 90 degrees with respect to the sheet traveling direction, the knife side faces the traveling sheet in the downstream direction. , A lateral force acts on the knife, and excessive force is applied to each of the sheet and the knife, which causes breakage in the sheet running direction or breakage of the knife. Further, as the knife incident angle α approaches 0 degrees, the sheet is broken in the width direction by the knife due to the transverse traveling force of the knife, and the knife is broken. That is, since the appropriate incident angle α of the knife is determined by both velocity vectors of the traveling sheet speed and the traveling speed of the knife, it is an important factor to set the incident angle α of the knife in advance (for example, see Patent Document 1). 1, see Patent Document 2.).
In the conventional cutting device, when the knife travels in the lateral direction, the transverse cutting of the sheet is completed when the knife reaches the other sheet end from the sheet end at the start of cutting, but then the knife tip is raised to a height that does not contact the sheet. Or the knife must be separated and traversed in the opposite direction at a remote position above the sheet and returned to the old position before cutting, and the returning operation of this knife is a wasteful operation that does not cut the sheet. Nevertheless, this causes the equipment for the return operation to become complicated and large, and is expensive in terms of manufacturing cost (for example, see Patent Documents 1, 2, and 3). ).
[0003]
[Patent Document 1]
Japanese Patent Application Laid-Open No. 8-1582 (Page 1, Page 3, FIG. 1, FIG. 2, FIG. 3)
[Patent Document 2]
JP-A-7-206233 (Page 1, FIG. 1, FIG. 2, FIG. 3)
[Patent Document 3]
JP-A-5-318381 (page 1, FIG. 1, FIG. 2)
[Patent Document 4]
Japanese Patent No. 2990479 (page 2)
[Patent Document 5]
JP 2001-114458 A (page 1)
[0004]
[Problems to be solved by the invention]
Especially in the case of a coating machine, it is rare to apply only one type of sheet and only one type of liquid paint, and it is usually operated under a wide variety of conditions, and the sheet speed also depends on the above conditions. It has to be changed remarkably, and the angle of incidence of the knife must be changed each time, and it takes a lot of time to adjust the angle.
[0005]
Further, the sheet feeding section and the winding section in the above-mentioned coating machine have become very complicated with the automation of the equipment, and generally the equipment space of the sheet cutting device in both parts is relatively small, and therefore the cutting device The miniaturization of itself is required, and this miniaturization has been an issue.
[0006]
As described above, the conventional cutting device requires a return operation when the knife travels in the lateral direction and arrives at the other sheet end from the sheet end at the start of cutting, and the equipment for the return operation becomes complicated and large. And this solution has been an issue.
[0007]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the movement of the apparatus itself has been simplified, the apparatus itself has been reduced in size, and a traveling sheet transverse cutting apparatus which does not require any manpower to adjust the knife incident angle has been invented.
[0008]
According to the first aspect of the invention, the traveling sheet transverse cutting device inserts a knife from one end of the traveling long sheet, moves the knife at a constant speed in a direction transverse to the sheet traveling direction, and moves the sheet to another side. In the apparatus for transversely cutting to the side end, the sheet cutting device sets the incident angle of the knife with respect to the sheet traveling direction according to the traveling speed of the sheet and the traveling speed of the knife, and reaches the end of the traveling and cutting stroke of the knife. At this point, the knife is automatically inverted, and the sheet is transversely cut in the opposite direction again from the other side edge at the same knife incident angle with respect to the sheet running direction, and the sheet is repeatedly transversely cut. It was configured to be able to.
[0009]
According to the second aspect of the present invention, a configuration is added to the first aspect of the present invention in which the traveling speed of the sheet is detected and the incident angle of the knife is automatically set in accordance with the sheet speed.
[0010]
According to the third aspect of the present invention, the configuration in which the blade edge angle of the knife is 60 degrees to 20 degrees with respect to the sheet plane is added to the first or second aspect of the invention.
[0011]
According to the invention of claim 4, the sheet cutting device comprises: a frame-shaped traveling gantry on which the sheet is laid; a traveling body disposed on the gantry so as to be able to reciprocate; A knife support rotatably supported by a knife, a knife-side rotation engagement body mounted on a knife support shaft, a knife supported on the knife support end, and a rotation mounted on both ends of the traveling gantry A motor, a rotating motor-side engaging body that is engageable with the knife-side rotating engaging body and is rotatable by a predetermined angle around an axis parallel to the knife support body axis, and a traveling signal detection provided in the gantry The configuration comprising the device, the knife rotation angle setting device and the traveling motor is added to any one of the first, second and third aspects of the invention.
[0012]
That is, when the transverse speed of the knife is constant in a sheet transverse cutting apparatus that transversely cuts a sheet traveling at a constant speed, the incident angle α of the traveling knife with respect to the sheet traveling direction is determined as shown in FIG. The knife is traveled from one end of the sheet in the direction crossing the sheet, and the knife passes through the sheet end on the reflection side, and when the knife travel stroke reaches the final point, the knife incident angle α is set as shown in A knife turning angle setting device provided in a frame or the like as shown in claim 4 turns the knife to a predetermined angle, that is, a turning angle reverse to a contrast angle α opposite to the sheet traveling direction, and in the next reverse direction. A device that moves the knife up and down at each reversal by holding it at the angle of incidence α to be cut and running it at the same speed in the opposite direction at the reversal incidence angle at the next cut is required It was to not configured.
[0013]
According to a fourth aspect of the present invention, the knife rotation angle setting device includes a knife-side rotating device such as a gear or a pulley provided on a revolvable knife support provided on a traveling body that can reciprocate in a sheet crossing direction on a traveling platform. It is provided with a moving engagement body, and is constituted by a fixed rotation motor fitted with a rotation motor side engagement body such as a gear or a pulley provided at the end of the traveling gantry.
By rotating the rotary motor, the knife is turned to a predetermined symmetrical incident angle in the opposite direction via an engaging body such as a gear or a pulley, but not only gears meshing with each other but also belts and the like as engaging bodies. The configuration of the knife rotation transmitting means utilizing the above is a configuration that can be naturally considered, and is included in the configuration of the present invention. That is, instead of the combination of the gears, a combination of pulleys via a belt may be used.
[0014]
The importance of the angle of incidence α of the knife will be described in detail with further explanation.
In the method of transversely cutting a sheet with a transversely traveling knife in the traveling direction of the traveling sheet, as shown in FIG. 5, the knife is driven by a correlation between the traveling speed A of the sheet and the knife speed B of laterally traveling. The incident angle α is determined.
This proper angle has only one angle and can be calculated by the following formula.
tanα = B / A
Accordingly, as the knife speed B is higher than the sheet traveling speed A, the incident angle α becomes closer to 90 degrees.
[0015]
If the knife incidence angle with respect to the sheet speed does not match the appropriate value, a force other than the force used for cutting acts between the laterally traveling knife and the traveling sheet, and in many cases, the sheet may break or the knife may break. The consequences are:
Especially when the knife incident angle does not coincide with the appropriate value at the moment when the laterally traveling knife enters the side edge of the running sheet, the above-mentioned trouble phenomenon occurs remarkably, so the knife incident angle for sheet cutting is the most important. Element.
[0016]
In addition, as described above, in the operation mode of the coating machine, the sheet speed is not constant due to changes in sheet properties, paint composition, and the like, and must be changed as necessary. It has been attempted to eliminate the trouble by detecting the sheet speed signal and changing the knife speed.
[0017]
However, it is necessary to control the speed of the motor used for traveling, and in many cases, the use of a servo motor, a variable speed motor, etc. results in an increase in the speed control equipment and the size of the drive unit, a complicated mechanism, and extremely expensive equipment. I was
[0018]
The invention according to claim 2 uses a traveling motor such as a separate air cylinder or a general-purpose motor as a means for moving the knife in a transverse direction, and while the traveling speed of the knife is constant, the traveling speed signal of the sheet before traveling of the knife. Is input, and the sheet is cut at an ideal angle of incidence by presetting the angle of incidence of the knife, which is added to the invention of claim 1.
[0019]
Means for presetting the angle of incidence of the knife by the speed signal of the running sheet is generally easy. According to a first aspect of the present invention, a swivelable knife support that supports a knife in a direction perpendicular to a sheet surface is set at a predetermined angle based on a sheet speed signal. Although a small motor is conceivable, it is not particularly limited to this. According to the fourth aspect of the present invention, the reversal of the knife and the setting of the incident angle are performed only by the engagement of the rotating motor such as a drive motor and the engaging body such as a gear or a pulley, and are compact.
[0020]
When cutting a sheet with a knife, the angle formed by the cutting edge of the knife itself and the sheet surface, that is, as shown in FIG. 6, the knife angle β is important.
This knife angle β should be set to an angle that maximizes the cutting force because the greater the combined speed of both the speed vector of the sheet traveling speed and the speed of the traversing knife, the greater the amount of cutting the sheet with the knife. is there.
[0021]
Normally, as shown in FIG. 6, the knife edge angle β used for transverse cutting of the sheet can be cut if it is smaller than 90 degrees with respect to the sheet surface. In the sheet cutting mechanism, the smaller the angle β formed between the sheet surface and the knife edge, the greater the sheet cutting force.
Since the cutting force acts at a right angle to the knife edge, if the cutting force is applied to the sheet surface in a cutting direction, that is, the angle β is reduced, the cutting force increases, but the cutting edge angle β is correspondingly increased. If it is made smaller, the blade edge pushes down the sheet, and escapes from the sheet blade edge, so that the sheet cannot be cut by the amount of pressing down.
[0022]
The inventor has studied the relationship between sheet cutting and blade edge angle β diligently, and as a result of repeating the test, it has been found that the cutting of the sheet is the best when the blade angle β is 45 to 30 degrees with respect to the sheet surface. I found out. The range of the cutting edge angle β of 60 to 20 degrees according to the third aspect of the present invention defines a favorable cutting range including the above range.
[0023]
BEST MODE FOR CARRYING OUT THE INVENTION
The importance of the incident angle α of the knife with respect to the sheet traveling direction will be further described and described in detail.
In the method of cutting a sheet with a knife traveling transversely to the sheet traveling direction, the knife incident angle α is determined by a correlation between the sheet traveling speed Cv and the knife speed Nv traveling transversely to the sheet.
The optimum knife incident angle α has only one point and can be calculated by the following equation.
tanα = Cv / Nv (1)
[0024]
If the knife incident angle α with respect to the sheet running direction does not match the appropriate value, a force other than the force for cutting the sheet acts between the laterally running knife and the running sheet, and in many cases, the sheet breaks or the knife breaks. This results in an accident.
In particular, when the knife incident angle α does not match the proper value at the moment when the knife edge of the laterally traveling knife enters the edge of the running sheet, the above-mentioned trouble phenomenon occurs remarkably, so the knife incident when cutting the sheet The angle α is the most important factor. Further, as described in paragraph 0004, the sheet speed is not constant in the operation state of the coating machine and should be changed depending on the sheet material, paint properties, and the like. The above-mentioned trouble has been solved by a method of changing the knife traveling speed in response to the sheet speed signal by taking in a signal. However, in this method, the speed control of the motor used for knife traveling is necessary, and in many methods, the speed control equipment and the drive unit are increased in size by using a servomotor, a variable speed motor, and the like, and the driving mechanism becomes complicated, resulting in a very expensive configuration. It has become.
[0025]
In the present invention, a method is adopted in which the knife traveling speed is kept constant, an air cylinder or a general-purpose motor is used as a traveling motor for traveling the knife, and the knife traveling mechanism is simplified. In this method, the sheet is cut at an ideal angle of incidence by taking in the signal of the traveling speed of the sheet and setting the angle of incidence of the knife according to the signal. When the knife traveling speed is changed depending on the type of the sheet or the like, it is needless to say that the incident angle can be set accordingly.
[0026]
As means for setting the incident angle of the knife before the cutting operation by the speed signal of the traveling sheet, in the present invention, the knife support capable of turning in the direction perpendicular to the sheet surface is set to a predetermined angle by the sheet speed signal. Although a small motor can be considered as the rotating prime mover, it is not particularly limited to a motor. According to the fourth aspect of the invention, the turning of the knife and the setting of the angle of incidence after the cutting of the sheet are performed by using, for example, a drive motor as the rotating motor, and using a gear device or a pulley as the engagement means on the knife side and the rotating motor side. It is configured only by using the device, and has a compact configuration.
[0027]
FIG. 1 shows a general configuration of an apparatus for applying a traveling sheet transverse cutting device of the present invention, in which a general coating apparatus for applying paint to a sheet 7 and a part of a sheet supporting roll 16 in the apparatus are omitted. It is a schematic side view which shows the positional relationship of the shown sheet cutting apparatus 5,6.
[0028]
In the illustrated coating machine, a feeding section 1 for continuously feeding a long sheet 7 wound up, a coating section 2 for applying a liquid paint to the sheet 7, and a dryer for drying and passing the sheet 7. 3 and a winding unit 4 for winding the dried sheet 7.
[0029]
The feeding-side sheet cutting device 5 is provided in the feeding portion 1, the winding-side sheet cutting device 6 is provided in the winding portion 4, and the two sheet cutting devices 5, 6 are provided in the feeding portion 1 and the winding portion 4. At the time of replacement of the take, the rear end of the old sheet 7 is cut, the leading end of the new take-up sheet is connected to the rear end of the old sheet in the feeding section 1, and the new end is taken up in the take-up section 4. It is attached for the purpose of connecting to the spindle.
[0030]
FIG. 2 is a perspective view of the embodiment showing a positional configuration of the running sheet 7 (running direction arrow A) and the sheet cutting device 5 or 6. The sheet cutting device 5 or 6 is arranged at a substantially right angle to the sheet 7, and the knife 11 travels in the transverse direction with respect to the sheet 7 to cut the sheet 7 sideways.
[0031]
FIG. 3 is an enlarged side view of the embodiment of the sheet cutting device 5 or 6 as viewed from the running side of the sheet 7. FIG. 4 is a partially enlarged elevation view of the embodiment of the sheet cutting device 5 or 6 viewed from the running direction of the sheet 7. The sheet cutting device 5 or 6 includes a traveling platform 8, a traveling body 9 that can reciprocate on the platform 8 in the left-right direction in the drawing, and an axis that allows the traveling body 9 to rotate in a direction perpendicular to the sheet 7 surface. And a supported knife support 10.
[0032]
The traveling body 9 moves right and left on the traveling gantry 8 in the figure, and the knife support 10 also moves right and left. The traveling base 8 can be provided with a knife traveling motor. The driving motor may be a liquid cylinder device for driving the driving, a motor, or the like. However, the driving device is not limited to the driving device and may be any driving device capable of adjusting the knife traveling speed for the purpose of linear motion.
[0033]
The knife 11 is held by a knife support 10 that can rotate around a knife support shaft 13, and a knife-side gear 12, which is a knife-side rotating engagement body, is mounted on the knife support shaft 13. I have.
[0034]
The knife incident angle α will be described with reference to FIGS. A knife-side gear 12 serving as a knife-side rotating engagement body includes a rotating motor that is a fixed rotating motor mounted on both ends of the traveling gantry 8 at a position where the knife traveling body 9 reaches a side end of the seat 7. The shaft is engaged with a motor-side gear 14 mounted on a shaft 15. When the knife support is engaged, the knife support 10 is rotated by the rotation of the rotation motor 15 until the knife 11 reaches a predetermined angle.
[0035]
The rotating motor 15 is a means for rotating the knife 11, and other electric or hydraulic rotating devices may be used as the rotating motor, but the rotating motor is not particularly limited thereto. At the traveling end of the knife 11, the knife 11 is rotated by the rotation of the rotation motor 15, and at the same time, the vehicle is driven in the reverse direction, so that the predetermined incident angle α is set, and the knife 11 waits for cutting in the next reverse direction. Stand still.
[0036]
The knife rotation diagram of FIG. 7 will be described. A sheet traveling speed signal from a separate sheet traveling speed detecting device is input to a traveling signal detecting device, and an output signal of the detecting device and a knife reaching signal (that is, an engaging member engaging signal) indicating that the knife has reached the end of the knife mount. Signal) is input to the knife rotation angle setting device, and a command signal from the setting device is input to the rotation motor, and the motor rotates, and the knife-side rotation engagement member is rotated via the rotation motor-side engagement member. Is rotated, and the knife is rotated to a predetermined incident angle position.
[0037]
The following results were obtained as a result of cutting by the running sheet lateral cutting device of the present invention.
Test conditions: For the running sheet, a sheet cutting device was installed in a direction crossing the sheet, and the sheet was cut at different sheet running speeds.
[0038]
[Table 1]

[0039]
As a result of the above test, the cutting was performed at the calculated ideal angle, and the cutting conditions were all good. In the conventional cutting method, the angle of incidence of the knife is fixed and does not match each sheet traveling speed, so that the cut edge of the sheet is poor and cutting may fail.
[0040]
【The invention's effect】
In the invention of claim 1, by setting the knife incident angle with respect to the sheet traveling direction according to the traveling speed of the sheet and the traveling speed of the knife, the cutting condition of the traveling sheet by the knife becomes good, and both the outward and return travels of the knife are performed. Sheet cutting is possible, eliminating the need for a wasteful return device for knives that do not perform cutting work, miniaturizing equipment, reducing installation costs, cutting running sheets reliably, and improving product yield and sheet The operation rate of a working machine such as a coating machine to which a cutting device is attached is greatly improved. In addition, by rotating the knife at a predetermined angle at the time of the sheet cutting stroke, there is an effect that the size of the sheet cutting apparatus can be reduced.
[0041]
According to the second aspect of the present invention, the knife incident angle is set quickly and reliably by automatically setting the knife incident angle according to the sheet traveling speed, thereby improving the sheet yield and reducing the operating rate of the working machine. This has the effect that the improvement can be further achieved.
[0042]
According to the third aspect of the present invention, by setting the blade edge angle of the knife in the predetermined angle range, the sheet lateral cutting operation is assured, and the effect of further improving the sheet yield and the operation rate of the working machine is exhibited.
[0043]
According to the fourth aspect of the present invention, the sheet cutting device can be reduced in size, can be mounted on various sheet cutting work machines, and furthermore, the continuous cutting operation of sheets other than the exchange of winding can be fully automated, and cutting can be performed. It has an immeasurable effect on improving the seat yield and the operating rate of the work machine.
[Brief description of the drawings]
FIG. 1 is a schematic side view of a coating machine showing a positional relationship embodiment of a sheet cutting device.
FIG. 2 is a partially enlarged perspective view showing an embodiment of a mounting relationship between a sheet cutting device and a sheet. .
FIG. 3 is an enlarged side view of the embodiment of the sheet cutting apparatus viewed from an end of a traveling gantry.
FIG. 4 is a partially enlarged elevation view of the embodiment of the sheet cutting apparatus viewed from the side of the traveling gantry.
FIG. 5 is an explanatory view of a knife incident angle.
FIG. 6 is an explanatory view of a knife edge angle.
FIG. 7 is a knife rotation diagram.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Feeding part 2 Coating part 3 Dryer 4 Winding part 5 Feeding side sheet cutting device 6 Winding side sheet cutting device 7 Sheet 8 Traveling gantry 9 Traveling body 10 Knife support 11 Knife 12 Knife side gear (knife side engaging body)
13 Knife support shaft 14 Motor side gear (motor side engaging body)
15 Rotation motor 16 Support roll A Sheet traveling direction B Knife traveling direction α Knife incident angle β Knife blade angle

Claims (4)

In a device that inserts a knife from one side end of a running long sheet, makes the knife travel at a constant speed in a direction transverse to the sheet traveling direction, and transversely cuts the sheet to the other side end, a sheet cutting device includes: The angle of incidence of the knife with respect to the sheet traveling direction is set according to the traveling speed of the sheet and the traveling speed of the knife. A transverse cutting apparatus for transversely cutting the sheet in the opposite direction at the same knife incident angle with respect to the sheet traveling direction, and repeatedly cutting the sheet. 2. The traveling sheet transverse cutting device according to claim 1, wherein the traveling speed of the sheet is detected, and the incident angle of the knife is automatically set according to the sheet speed. 3. The traveling sheet transverse cutting device according to claim 1, wherein the blade edge angle of the knife is 60 to 20 degrees with respect to the sheet plane. The sheet cutting device
A frame-like traveling gantry on which a seat is straddled and installed, a traveling body disposed on the gantry so as to be able to reciprocate, and a knife support which is axially opposed to the traveling body so as to be rotatable in a direction perpendicular to a sheet surface. A knife-side rotating engagement body mounted on a knife support shaft, and a knife supported on the knife support end;
A rotating motor mounted on both ends of the traveling base, and a rotating motor-side engaging body engageable with the knife-side rotating engaging body and capable of rotating at a predetermined angle around an axis parallel to the knife support shaft. 4. The traveling sheet transverse cutting device according to claim 1, further comprising a traveling signal detection device, a knife rotation angle setting device, and a traveling motor installed inside the gantry.

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