JPH0719738Y2 - Tape cutter - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tape cutter for producing a narrow tape by sequentially cutting one end of a continuous sheet in the width direction of the continuous sheet with a blade.

[0002]

2. Description of the Prior Art FIGS. 5 and 6 show a conventional tape cutter of this type. In this conventional tape cutter, a continuous sheet B is wound from a sheet winding body A, and the continuous sheet B is sequentially fed to a cutting position by a sheet feeding device 103 at a constant length, and the front end Ba side of the continuous sheet B is fed. The tape 142 having a predetermined width L can be manufactured by cutting with a blade 142 that moves in the sheet width direction.

In the conventional tape cutter shown in FIGS. 5 and 6, a total of three sheet cutting blades 142 are used, and three sheets are simultaneously cut from the sheet front end side by one operation.
The thin tapes C, C, C can be cut. A pedestal 102 is provided at the sheet cutting position to support the sheet front end portion Ba to be cut from the lower surface side. On the upper surface of this pedestal 102, each blade 142
3 narrow grooves 121, 121, 1 for inserting the blade edges of
21 is formed.

By the way, when manufacturing narrow tapes C having different widths L (FIG. 5), it is necessary to adjust the interval M (FIG. 6) between the blades 142, 142, 142. The adjustment of the distance M between the blades 142, 142, 142 is continuously performed with respect to the reference position (for example, the stop position of the leading edge of the sheet at the time of feeding the sheet or the installation position of the blade adjacent to the lower side of the sheet feeding direction). The sheet B was displaced in the lengthwise direction by an appropriate amount. After the adjustment, trial cutting was performed and the width L of the cut narrow tape B was measured to confirm whether the interval M was accurate.
When changing the width L of the narrow tape C to be manufactured,
It is also necessary to adjust the sheet feeding amount per sheet feeding by the sheet feeding device 103, and it is also necessary to replace the receiving table 102 with one having an appropriate narrow groove interval.

[0005]

However, in the conventional tape cutter shown in FIGS. 5 and 6, when the narrow tape C having the different width L is manufactured, as described above, each blade 1
After displacing and adjusting 42 with the division, perform trial cutting,
Since it was confirmed whether or not the interval M between the blades was accurate, the adjustment of the blade interval M was troublesome, and as a result of trial cutting, if the width L of the narrow tape C was not accurate, the blade was cut. It is necessary to readjust the position of. Further, when the width of the narrow tape C is changed, in addition to the adjustment of the interval between the blades, the adjustment of the sheet feeding amount of the sheet feeding device 103 per one time and the replacement of the receiving table 102 must be performed.
There is a problem that every time the width of the narrow tape C to be manufactured is changed, various fine adjustment work is required and the change work takes a long time.

In view of the above problems of the conventional tape cutter, it is an object of the present invention to provide a tape cutter capable of easily performing various adjustment operations when manufacturing narrow tapes having different widths. It is a thing.

[0007]

DISCLOSURE OF THE INVENTION The present invention is a tape cutter capable of manufacturing a narrow tape by cutting one end side of a continuous sheet in the width direction of the continuous sheet with a cutting tool in sequence. At a fixed position of the base frame, which serves as a pedestal for the blade, a roll that is pivotally supported to be replaceable by selecting from a plurality of rolls having different diameters,
A blade unit, in which a plurality of blades are attached to the support base in a state where a predetermined interval is provided in the lengthwise direction of the continuous sheet, and the blade unit are separated from the center of rotation of the roll by a certain distance. A blade unit moving device for moving the roll in parallel with the axis of the roll at a position, and for one operation, one end side of the continuous sheet which is in contact with the outer peripheral surface of the roll is cut by the length of each of the blades. A sheet feeding device for rotating the roll by an angular range that can be fed to the cutting position side one by one, and each of the blades is guided so that it can be adjusted forward and backward toward the rotation center of the roll with respect to the support base. It is characterized by making it.

[0008]

In the tape cutter according to the present invention, the roll that serves as the pedestal of the knives when the sheet is cut can be replaced at a fixed position on the base frame, while the knives unit having a plurality of knives rotates the roll. It can be moved parallel to the axis of the roll at a position separated from the center by a certain distance. Also, one end side of the continuous sheet,
By the sheet feeding device rotating the roll by a predetermined angle range, the roll is fed to the cutting position by the cutting length per time. And the cutting edge of each blade,
When this tape cutter is operated in a state in which continuous sheets that are equidistant from each other and are in contact with the outer peripheral surface of the roll are set at positions where they can be cut, the blade unit is moved in the axial direction of the roll, and each blade is moved. Thus, one end of the continuous sheet is cut into pieces each having a predetermined width, and the same number of narrow tapes as the blade can be simultaneously manufactured in one operation. Then, the blade unit moving device and the sheet feeding device are alternately operated, so that the narrow tape having the same size can be successively produced.

By the way, since the roll is designed to rotate within a predetermined angle range per one operation of the sheet feeding device, when the roll is changed to a roll having a different diameter, the outer peripheral surface of the roll moves once. The length (that is, the feeding length per one continuous sheet) is changed.
On the other hand, when the diameter of the roll changes, each blade also needs to be adjusted back and forth so that their cutting edges correspond to the outer peripheral surface of the roll, but each blade can be adjusted forward and backward toward the center of rotation of the roll. Therefore, the intervals between the cutting edges of the blades can be increased or decreased at equal intervals. Therefore, when trying to manufacture narrow tapes with different widths, a roll having a diameter corresponding to the width of the narrow tape to be manufactured is adopted, and each blade is moved back and forth toward the center of rotation of the roll. Adjustment is completed simply by adjusting.

[0010]

According to the tape cutter of the present invention, the roll having the diameter corresponding to the width of the narrow tape to be manufactured is mounted on the base frame, and the blade edges of a plurality of blades are rotated. A narrow tape having a desired width can be manufactured by simply adjusting the advancing / retreating to the position corresponding to the surface of the roll toward the center, and the work for changing the width of the narrow tape to be manufactured is easy. In addition, narrow tapes having the same width can be manufactured. Further, even when the width of the narrow tape to be manufactured is changed, it is not necessary to change the rotation angle range of the roll that serves as the pedestal per roll, and the work for adjusting the sheet feed width is not necessary. There is an effect.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. 1 to 4. The tape cutter of this embodiment is adapted to successively produce a narrow tape C from a continuous sheet B. , A base frame 1 having a pair of side walls 11, 11, a roll 2 that is installed between the side walls 11 and 11 and serves as a pedestal for a blade, and the front end Ba side of the continuous sheet B is sequentially provided with a predetermined length. A sheet feeding device 3 for feeding the sheet to a sheet cutting position, a blade unit 4 for cutting the front end Ba portion of the continuous sheet B in the width direction of the continuous sheet B,
The basic configuration is a blade unit moving device 5 for moving the blade unit 4 for cutting a sheet.

In this embodiment, an adhesive sheet with release paper is used as the continuous sheet B, and the continuous sheet B is mounted on the base frame 1 as a sheet winding body A wound in a roll shape. .

A plurality of rolls 2 having different diameters are prepared as the blade receiving base, and one roll 2 is selected from the rolls. The diameter of the roll 2 is a factor that determines the width L (see FIG. 3) of the narrow tape C to be manufactured as described later, and the roll 2 having a predetermined diameter is selected according to the tape width to be manufactured. To use.

On the outer peripheral surface of the roll 2, a large number of small grooves 21, 21 ... Which are receiving grooves for the blade 42 are formed at predetermined equal angular intervals in the roll axial direction. In this embodiment, a total of 36 thin grooves 21, 21 ... Are formed at an angle of 10 °. In addition, these narrow grooves 21, 2
1 ... are equiangular intervals (angle 1
The same number (36) is formed at 0 ° intervals. Therefore, the larger the diameter of the roll 2 is, the larger the interval between the fine grooves 21, 21 is. For example, as shown in FIG. 4, in the case of a roll 2'having a large diameter (for example, the roll diameter is 343.77 mm), the interval between two adjacent fine grooves 21 and 21 is considerably large (symbol M '= about 30 mm). On the contrary, in the case of the roll 2 ″ having a small diameter (for example, the roll diameter is 229.18 mm), the same interval is considerably small (reference numeral M ″ = about 20 mm). The interval between the narrow grooves 21 is the width L of the narrow tape C to be manufactured as described later.

The sheet feeding device 3 intermittently rotates the roll 2 by a predetermined angle range θ to thereby bring the leading end B of the continuous sheet B in contact with the outer peripheral surface of the roll 2.
The a side can be sequentially supplied to the sheet cutting position for each cutting length.

Specifically, the sheet feeding device 3 has a touch roll 33 installed on the outer peripheral surface of the roll 2 on the rotation direction upper side than the sheet cutting position, and sandwiches the continuous sheet B between the rolls 2 and 33, and The roll 2 serving as a cradle is provided with a vacuum device 35 for adsorbing the continuous sheet B on the outer peripheral surface of the roll, and further receives power from the motor 31 to move the roll 2 at a constant angle θ (this embodiment). The angle .theta. = 30.degree.) Is intermittently rotated.

The touch roll 33 can be moved back and forth in the approaching / separating direction with respect to the roll 2, and can be adapted according to the diameter of the roll 2 used.

In the vacuum device 35, the roll 2 is hollow, a large number of small holes 37, 37 ... That reach the hollow portion 36 are formed on the outer peripheral surface of the roll 2, and the air in the hollow portion 36 is vacuum pump 38. I'm trying to suck in. The vacuum device 35 is designed so that the sealing devices 39, 39 provided in the hollow portion 36 of the roll 2 act only on the good portion of the outer peripheral surface of the roll 2 where the seal cutting position is located.

Therefore, in the sheet feeding device 3, when the leading end Ba of the continuous sheet B is passed from the sheet winding body A between the roll 2 serving as the tool rest and the touch roll 33 and the vacuum device 35 is operated, The continuous sheet front end Ba side comes to be attracted to the outer peripheral surface of the roll 2, and the continuous sheet front end B is rotated by rotating the roll 2 in this state.
It is possible to feed the portion a exactly one pitch.

In this embodiment, the blade unit 4 is constructed by attaching a total of three blades 42, 42, 42 to a support base 41. Each of the blades 42, 42, 42 is a narrow plate having an appropriate length (for example, about 200 to 250 mm), and the lower end of the blade 42 can be cut from either front or back. Thus, the blade edges 42a of the double blade are formed. The mounting structure of each blade 42, 42, 42 will be described later.

The blade unit 4 is parallel to the axis of the roll 2 at a position separated from the center of rotation P of the roll 2 just above the roll 2 by a predetermined distance (for example, about 500 mm) by the blade unit moving device 5. It can be moved back and forth.

The blade unit moving device 5 includes a guide rail 51 for guiding the support base 41 of the blade unit 4,
It has a drive unit 52 for reciprocating the blade unit 4 along the guide rail 51. Guide rail 51
Is located directly above the roll 2 and is installed between both side walls 11 of the base frame 1. The drive device 52 is
Endless chain 53 installed near the guide rail 51
Are configured to be circulated by the motor 31 via the cam device 54. The support 41 of the blade unit 4 and the endless chain 53 are connected by a link material 55.
The motor 31 also shares the motor of the sheet feeding device 3.

The blade unit moving device 5 is
When the motor 31 operates, the cam device 54 slightly delays the rotational movement of the roll 2 (rotates at an angle of 30 °), and the endless chain 53 travels exactly a half circumference, and the blade unit 4 is denoted by reference numeral 4 in FIG. The position (or the position of reference numeral 4 ') can be moved to the position of the reference numeral 4' (or the position of reference numeral 4). The moving range of the blade unit 4 is set so that each blade 42 can completely pass through the narrow groove 21 forming portion of the roll 2.

The support base 41 of the blade unit 4 has a plate 4 for mounting the blades 42 on the lower surface thereof.
3,43,43 are extended downward. As shown in FIG. 2, the plates 43, 43, 43 are displaced from each other in the front-rear direction (roll axis direction) and are also displaced from each other in the left-right direction as shown in FIG. Has been. Further, as shown in FIG. 3, each of the plates 43, 43, 43 is provided with an intermediate plate 43 in a vertical posture, and the two left and right plates 43, 43 respectively face downward to approach the intermediate plate. It is provided in a posture inclining in the direction.

The blades 42, 42, 42 of the blade unit 4
Are attached to the plates 43, 43, 43 while being held by the holders 44, respectively. Each blade 42 is fixed to the holder 44 by set screws 45, 45. When the set screws 45, 45 are loosened, the blade 4 is
2 can be slid with respect to the holder 44 in the blade length direction. Also, each holder 44,44,44
Are mounted on the plate 43 in such a manner that they can slide in the length direction of the plate 43, and the height of the holder 44 can be adjusted by an adjusting bolt 46.

As shown in FIG. 3, the blades 42, 42, 42 are arranged at equal intervals in the left-right direction, and the blades 42 rotate the roll 2 with respect to the holders 44, 44, 44, respectively. It is possible to adjust forward and backward in the direction toward the center P. Further, even when the holders 44, 44, 44 are adjusted back and forth with respect to the plates 43, 43, 43, the blades 42, 42, 42 slide in the direction in which they are directed to the rotation center P of the roll 2. It is supposed to do.
That is, in this embodiment, the adjacent blades 42, 42, 42
Can be adjusted forward and backward with the rotation center P of the roll 2 as the center and always having an angle of 10 ° with each other.

With this arrangement, as shown in FIG. 4, when a large-diameter roll indicated by reference numeral 2'is used or a small-diameter roll indicated by reference numeral 2 "is used as the blade holder. Also, the blade edge 42 of each blade 42, 42, 42
When a is adjusted to each cutting position (position to reach the narrow groove 21 of each roll), the three cutting edges 42a feed the leading end of the sheet when the rolls (2 ′ or 2 ″) rotate by one pitch, respectively. It is located at a position that exactly divides the length (M '× 3 or M ″ × 3) into three equal parts.

2 to 4, reference numeral 6 is a pressing member for pressing both end portions of the leading edge of the continuous sheet in the sheet width direction onto the surface of the roll 2 at the sheet cutting position. When the sheet is cut, the sheet moves upward to separate from the sheet upper surface, and when the sheet is cut, it moves downward to press the sheet upper surface.

The tape cutter of the illustrated embodiment is used as follows. Width L of narrow tape C to be manufactured (Fig. 3)
, The diameter corresponding to the width of the narrow tape C
A roll 2 (having a narrow groove interval M equal to the width L) is selected and mounted on the base frame 1. And each blade 42,4
2, 42 are adjusted forward and backward so that each blade edge 42a can pass through the position reaching the narrow groove 21 on the outer peripheral surface of the roll, and then the leading end Ba of the continuous sheet B is passed between the roll 2 and the touch roll 33 to cut the sheet. Ready to go to the position. The vacuum pump 3 of the vacuum device 35
When the operation is started in the state where 8 is operated, the roll 2 serving as the pedestal has an angle of 30 ° each time the motor 31 operates once.
While rotating one by one, the blade unit 4 moves forward or backward once along the guide rails 51, and the front end side of the continuous sheet B sequentially fed to the sheet cutting position is provided with three blades 43, 43, respectively. , 43, a total of three thin tapes C, C, C can be manufactured in one operation. By continuously operating the motor 31 at a predetermined time interval, the continuous sheet B can be sequentially cut from the leading end side to continuously manufacture the narrow tape C.

When manufacturing narrow tapes C having different widths L, similar to the above, the narrow tapes C to be manufactured.
After changing to the roll 2 of the diameter according to the width of each,
It suffices to adjust the 2, 42, 42 forward and backward to a predetermined position.

In this embodiment, three blades 42 are used in total, but in other embodiments, the number of blades 42 may be two or four or more.

[Brief description of drawings]

FIG. 1 is a schematic side view of a tape cutter according to an embodiment of the present invention.

FIG. 2 is a view on arrow X in FIG.

FIG. 3 is a sectional view taken along line YY of FIG.

FIG. 4 is an explanatory view of the operation of the tape cutter of FIG.

FIG. 5 is a perspective view of a conventional tape cutter.

6 is a Z arrow view of FIG. 5. FIG.

[Explanation of symbols]

1 is a base frame, 2 is a roll, 3 is a sheet feeding device,
4 is a blade unit, 5 is a blade unit moving device, 21 is a narrow groove, 31 is a motor, 35 is a vacuum device, 41 is a support, 42 is a blade, 42a is a blade edge, 51 is a guide rail, 52 is a drive device, B Is a continuous sheet, Ba is the leading edge of the continuous sheet, C is a narrow tape, and P is the center of rotation.

Claims (1)

[Scope of utility model registration request] 1. A narrow tape (C) can be manufactured by sequentially cutting one end (Ba) side of the continuous sheet (B) with a knife (42) in the width direction of the continuous sheet (B). A tape cutter, which serves as a cradle for a blade (42) when cutting a sheet and is rotatably supported at a fixed position of the base frame (1) by selecting from a plurality of rolls having different diameters. A plurality of blades for the roll (2) and the support base (41)
A blade unit in which (42, 42, 42) are attached to the continuous sheet (B) with a predetermined interval in the longitudinal direction.
(4) and the blade unit moving device (5) for moving the blade unit (4) parallel to the axis of the roll (2) at a position separated from the rotation center (P) of the roll (2) by a certain distance. ) And a sheet length in which one end (Ba) side of the continuous sheet (B) which is in contact with the outer peripheral surface of the roll (2) is cut by each of the blades (42, 42, 42) per operation. The roll (2) within the angular range (θ) that can be sent to the cutting position side by minute.
And a sheet feeding device (3) for rotating the blade, and the blades (42, 42, 42) are provided with the support base (41).
On the other hand, the tape cutter is characterized in that it is guided so as to be adjustable forward and backward toward the center of rotation (P) of the roll (2).