JP2018153878A - Cutting device and printer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cutting device which can perform full cut and half cut to a printing medium with a simple mechanism comprising a small number of components, and to provide a printer including the cutting device.SOLUTION: A cutting device 100 includes: a cutting blade 110; a movable plate 107; and a rotating body 150. The cutting blade 110 is provided at the movable plate 107 which can move to left and right sides. The movable plate 107 includes a first contact part 161 and a second contact part 172. The rotating body 150 is provided with a first pin 151, a second pin 152, and a third pin 153. When the rotating body 150 rotates from an initial position in a forward direction (an arrow T1), the first pin 151 moves the cutting blade 110 to a full cut position. When the rotating body 150 rotates from the initial direction in a reverse direction (an arrow T2), the second pin 152 moves the cutting blade 110 to a half-cut position. When the cutting blade 110 is in the full cut position or the half cut position, the rotating body 150 rotates toward the initial position and the third pin 153 returns the cutting blade 110 to a standby position.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a cutting device for cutting a print medium, and a printing device including the cutting device.

  2. Description of the Related Art Conventionally, a printing apparatus including a cutting device that cuts a print medium is known. There are two types of cutting of the print medium: full cut for completely cutting the print medium and half cut (also referred to as partial cut) for cutting a part of the print medium.

  A printer device, which is an example of a printing device disclosed in Patent Document 1, includes a paper cutting unit that cuts paper. The paper cutting unit includes a fixed blade, a movable blade, a cam lever, a return spring, and an electric speed reduction mechanism. The fixed blade and the movable blade are disposed to face each other. The cam lever moves the movable blade forward. The return spring biases the movable blade toward the initial position. The electric speed reduction mechanism includes a drive motor and a power switching transmission mechanism. The power of the drive motor is transmitted to the cam lever via a power transmission mechanism. The power transmission mechanism includes a worm gear, an idle gear, a support plate, a transmission arm, and the like as components. The power transmission mechanism changes the amount of movement of the movable blade between the normal rotation and the reverse rotation of the drive motor. When the drive motor rotates forward, the movable blade fully cuts the paper between the fixed blade and the movable blade. On the other hand, when the drive motor is reversed, the movable blade half-cuts the paper with the fixed blade.

JP 2009-107090 A

  However, the printer apparatus has a problem in that the number of components constituting the power transmission mechanism is increased and the paper cutting portion is complicated by the provision of the return spring.

  An object of the present invention is to provide a cutting device capable of full-cutting and half-cutting a print medium with a simple mechanism including a small number of parts, and a printing device including the cutting device.

  A cutting device according to a first aspect of the present invention is a cutting device for cutting a print medium, a cutting blade having a blade portion at a tip thereof, and a holder for supporting a base portion of the cutting blade, wherein the cutting blade is The print medium is supported so as to be movable between a full cut position at which the print medium can be completely cut, a half cut position at which the print medium can be cut leaving a part, and a standby position at which the print medium is separated from the print medium. A holder, a rotating body supported rotatably, and provided with a first protrusion, a second protrusion, and a third protrusion; and provided at the base portion of the cutting blade, and selected as the first protrusion and the second protrusion. A first abutting portion that can be abutted on the first surface; a second abutting portion that is provided on the base portion of the cutting blade and is capable of abutting on the third protrusion, and is different from the first abutting portion; When the rotating body is in the initial position, the first protrusion and the second protrusion are The deviation is also separated from the first contact portion, and the third protrusion is in contact with the second contact portion, so that the cutting blade is positioned at the standby position, and the rotating body is moved forward from the initial position. When the first predetermined angle is rotated in the direction, the third protrusion is separated from the second contact portion, and the first protrusion is in contact with the first contact portion, so that the cutting blade is moved from the standby position to the full position. When the rotary body moves to the cutting position and the rotating body rotates a second predetermined angle in the reverse direction from the initial position, the third protrusion is separated from the second contact portion, and the second protrusion is the first contact. The cutting blade is moved from the standby position to the full cut position in contact with the contact portion.

  According to the first aspect, the rotating body has a function of causing the cutting blade to perform full cut and half cut, and a function of returning the cutting blade that has been cut to the initial position. Accordingly, since the number of components of the cutting device is reduced, the mechanism of the cutting device is simplified. Therefore, a cutting device capable of full-cutting and half-cutting a printing medium with a simple mechanism including a small number of parts is realized.

  In the cutting device, the first protrusion, the second protrusion, and the third protrusion are all provided on a surface on one side of the rotating body, and the first protrusion has a rotation center of the rotating body. A cylindrical first pin extending in parallel with the axis, the second protrusion being a cylindrical second pin extending in parallel with the first pin, and the third protrusion extending in parallel with the first pin. It is a cylindrical third pin, a line segment connecting the center of the first pin and the axis of the rotating body is defined as a first line segment, the center of the second pin, and the axis of the rotating body Is a second line segment, and a line segment connecting the center of the third pin and the axis of the rotating body is a third line segment, the first pin and the second pin are The total length of one line segment and the radius of the first pin is the length of the second line segment and the second pin. The third pin is provided at a position that is longer than the total length of the diameter, and the third line segment divides the angle formed by the first line segment and the second line segment into approximately two equal parts. It may be provided at a position. Since the 1st pin, the 2nd pin, and the 3rd pin are provided in the surface of one side of a rotating body, the error of the position in which each pin is provided can be made as small as possible. In particular, the error in the position of the first pin and the second pin affects the amount of movement of the cutting blade, but the cutting device can improve the accuracy of the amount of movement of the cutting blade by reducing the error in the position of each pin. be able to. Further, since the third line segment bisects the angle formed by the first line segment and the second line segment, the rotation control of the rotating body is simplified.

  In the cutting apparatus, an angle formed by the first line segment and the second line segment is approximately 180 degrees, and the first predetermined angle and the second predetermined angle are both approximately 90 degrees, The axis of the rotating body is at a position between the first contact portion and the second contact portion, and when the cutting blade is in the standby position, the third line segment is moved by the cutting blade. When the cutting blade is in the full-cut position, the first line segment is parallel to the moving direction of the cutting blade. When the first pin is in contact with the first contact portion and the cutting blade is in the half-cut position, the second line segment is parallel to the moving direction of the cutting blade, The second pin may abut on the first abutment portion. When the cutting blade cuts the print medium, the reaction force acting on the cutting blade is transmitted to the rotating body via the first pin or the second pin. In this case, the first pin and the second pin are in positions where the first line segment and the second line segment are substantially parallel to the moving direction of the cutting blade. Therefore, the rotating body is difficult to rotate in the direction in which it is returned to the initial position even if it receives a reaction force, so that the cutting device can stably cut the print medium.

  In the cutting apparatus, the first contact portion is a cam portion having a shape curved along the movement locus of the first pin or the second pin, and the first pin is in contact with the first contact portion. The cutting blade may be contacted to move to the full cut position, and the second pin may contact the first contact portion to move the cutting blade to the half cut position. Since the first contact portion is a cam portion having a shape curved along the movement locus of the first pin or the second pin, the first predetermined angle at which the first pin rotates or the second predetermined angle at which the second pin rotates. Even if the angle varies, the amount of movement of the cutting blade from the standby position is unlikely to fluctuate. Therefore, the cutting device can stably cut the print medium.

  In the cutting apparatus, the third pin is longer than each of the first pin and the second pin, and the second abutting portion is formed while the rotating body rotates the first predetermined angle from the initial position. And while the said rotary body rotates the said 2nd predetermined angle from the said initial position, while being spaced apart from the said 1st pin and the said 2nd pin, you may be provided in the position which can contact | abut to the said 3rd pin. After the cutting blade cuts the print medium, neither the first pin nor the second pin comes into contact with the second contact portion until the rotating body returns to the initial position. Therefore, the cutting device can stably return the cutting blade that has been cut to the standby position.

  The cutting device includes a receiving base that is capable of contacting the blade portion of the cutting blade and is movable, and biasing means that biases the receiving base in a direction approaching the blade portion. The urging force of the urging means acting on the cradle that contacts the blade portion when the cutting blade is in the full cut position is the same as the blade portion when the cutting blade is in the half cut position. It may be larger than the urging force of the urging means acting on the cradle that comes into contact. The cutting blade cuts the print medium by sandwiching the print medium with the cradle. When the cutting blade cuts the print medium, the cutting blade presses the cradle against the biasing force of the biasing means. At this time, since the urging force acting on the cradle corresponds to the cutting force with which the cutting blade cuts the print medium, the cutting blade can surely cut the print medium in full or half.

  A printing apparatus according to a second aspect of the present invention includes the cutting apparatus and a printing unit that prints the printing medium. According to the 2nd aspect, there exists an effect similar to a 1st aspect.

1 is a perspective view of a printing apparatus 1. FIG. 3 is a plan view of the tape cassette 30. FIG. 1 is a perspective view of a cutting device 100. FIG. 4 is another perspective view of the cutting device 100. FIG. 1 is a front view of a cutting device 100. FIG. 2 is an electrical block diagram of the cutting device 100. FIG. It is a front view which shows the operation | movement which the cutting blade 110 moves between a standby position and a full cut position. It is a front view which shows the operation | movement which the cutting blade 110 moves between a standby position and a half cut position.

  A printing apparatus 1 as an example of an embodiment of the present invention will be described with reference to the drawings. Hereinafter, left and right, front and rear, and top and bottom indicated by arrows in the figure will be described as left and right, front and back, and top and bottom of the printing apparatus 1 and the tape cassette 30.

  A schematic configuration of the printing apparatus 1 will be described with reference to FIG. The printing apparatus 1 includes a main body case 2, a mounting portion 8, and a cover 6. The main body case 2 has a box shape, and a mounting portion 8 is formed inside the main body case 2. The mounting portion 8 is a recess in which a tape cassette 30 described later can be mounted. The cover 6 is rotatably supported by the main body case 2 and can open and close the main body case 2. An input part 3 and a discharge port 11 are provided on the front wall part of the main body case 2. The input unit 3 is a button that can be operated by the user, and includes a power switch and the like. The discharge port 11 is an opening through which a printing tape 37 (see FIG. 2) described later is discharged. A tape discharge unit 40 is provided between the mounting unit 8 and the discharge port 11. The tape discharge part 40 is a recessed part recessed downward.

  A head holder 9 is erected on the front portion of the mounting portion 8. The head holder 9 supports the head 10. The head 10 is provided with a plurality of heating elements (not shown). A ribbon take-up shaft 95 stands on the left side of the head holder 9. A drive shaft 94 is erected on the front side of the head holder 9. The ribbon take-up shaft 95 and the drive shaft 94 are both rotatable shafts and are connected to a drive motor 90 (see FIG. 6) provided inside the main body case 2. A tape drive roller 46 of the cassette case 31 described later is attached to the drive shaft 94.

  A platen holder 12 is provided on the right side of the head 10. The rear part of the platen holder 12 is supported so as to be swingable by a shaft part extending in the vertical direction. The platen holder 12 of this embodiment swings as the cover 6 is opened and closed. A platen roller 15 and a transport roller (not shown) are rotatably held at the front portion of the platen holder 12. When the cover 6 rotates in the direction to close the main body case 2, the platen roller 15 swings toward the head 10, and the transport roller swings toward the drive shaft 94 (that is, a tape drive roller 46 described later).

  The tape cassette 30 shown in FIGS. 1 and 2 is a laminate type as an example. The tape cassette 30 includes a cassette case 31 in which support holes 64 to 68 are formed. The support hole 64 rotatably supports the tape drive roller 46. The support hole 65 rotatably supports a first tape spool (not shown) around which the double-sided adhesive tape 58 is wound. The double-sided adhesive tape 58 is a double-sided tape with a release paper 57 attached on one side, and is drawn out behind the tape drive roller 46. The support hole 66 rotatably supports a second tape spool (not shown) around which the film tape 59 is wound. The printed film tape 59 is bonded to the double-sided adhesive tape 58 on the right side of the tape drive roller 46. The support hole 67 rotatably supports a ribbon draw spool around which an unused ink ribbon (not shown) is wound. The support hole 68 rotatably supports a ribbon take-up spool 49 around which a used ink ribbon is wound.

  A portion of the cassette case 31 that extends forward from the right rear portion of the cassette case 31 is a hollow arm portion 34. An opening 32 is provided at the front end of the arm portion 34. In the opening 32, the film tape 59 drawn from the second tape spool is superposed from the right on the unused ink ribbon drawn from the ribbon draw spool. The ink ribbon and the film tape 59 drawn out from the opening 32 extend leftward and forward. A space formed on the left side of the arm portion 34 is a head insertion portion 29 into which the head holder 9 (see FIG. 1) and the head 10 (see FIG. 1) can be inserted. The ink ribbon drawn from the opening 32 enters the inside of the cassette case 31 on the left side of the head insertion portion 29.

  As shown in FIGS. 1 and 2, when the user attaches the tape cassette 30 to the attachment portion 8, the ribbon take-up shaft 95 is attached to the support hole 68, and the drive shaft 94 is attached to the tape drive roller 46. Further, the head holder 9 and the head 10 are inserted into the head insertion portion 29. The platen roller 15 faces the head 10 with the ink ribbon drawn out from the opening 32 and the film tape 59 in between.

  When the user rotates the cover 6 in the direction of closing the main body case 2, the platen roller 15 sandwiches the ink ribbon and the film tape 59 between the head 10, and the transport roller taps the double-sided adhesive tape 58 and the film tape 59. It is sandwiched between the drive roller 46. The printing apparatus 1 is ready for printing. Hereinafter, the film tape 59 to which the double-sided adhesive tape 58 with the release paper 57 is in close contact is referred to as a printing tape 37.

  The configuration of the cutting device 100 will be described with reference to FIGS. The printing apparatus 1 is an apparatus that cuts the printed printing tape 37 and is provided in the tape discharge unit 40. In the following description, the conveyance area of the printing tape 37 that passes inside the tape discharge unit 40 (see FIG. 1) is referred to as a conveyance path W (see FIG. 3). The conveyance path W is a virtual plane extending in the up-down direction and the front-rear direction.

  As shown in FIGS. 3 and 4, the cutting device 100 includes an arrangement unit 120, a fixed plate 105, a holder 139, a movable plate 107, a cutting blade 110, and a power transmission unit 140. The holder 139 is illustrated only in FIG. 4, and the fixing plate 105 in FIG. 4 is virtually illustrated by a two-dot chain line.

  The placement unit 120 is a unit on which the printing tape 37 can be placed, and is provided on the left side of the transport path W. The placement unit 120 includes a fixed base 122, a receiving base 125, and an urging means 135 (see FIG. 5). The fixed base 122 is a plate fixed to the tape discharge unit 40 (see FIG. 1). The cradle 125 is a plate-like member having an L-shape in plan view provided on the right side of the fixed base 122 and is movable in the left-right direction. The right end surface of the cradle 125 is a receiving surface 125A formed in a flat shape. The urging means 135 (see FIG. 5) urges the cradle 125 to the right. The biasing means 135 of the present embodiment is a compression spring that is disposed in a compressed state between the fixed base 122 and the receiving base 125. Three urging means 135 are provided at equal intervals along the vertical direction.

  The fixed plate 105 and the holder 139 are fixed to the tape discharge unit 40 on the right side of the transport path W. The fixed plate 105 and the holder 139 are arranged in order from the front. The movable plate 107 is provided between the fixed plate 105 and the holder 139 and is supported by the holder 139 so as to be movable in the left-right direction. The upper left corner and the lower left corner of the movable plate 107 are each provided with a protrusion 109 (see FIG. 4) protruding leftward. The protrusion 109 can contact the receiving surface 125A.

  As shown in FIG. 5, the cutting blade 110 (see FIG. 3) is a blade with a left end attached to the blade. That is, the cutting blade 110 has a blade portion 111 at the left end that is the tip. The blade portion 111 extends linearly along the vertical direction and faces the receiving surface 125 </ b> A of the receiving table 125. Further, the left end (tip) of the blade 111 is at the same left-right position as the left end of the protrusion 109 (see FIG. 4). A base that is the right part of the cutting blade 110 is fixed to the left part of the rear surface of the movable plate 107. Accordingly, the cutting blade 110 moves in the left-right direction together with the movable plate 107.

  The power transmission unit 140 will be described with reference to FIGS. 3 and 5. In FIG. 5, the above-described fixing plate 105 is not shown (the same applies to FIGS. 7 and 8). The power transmission unit 140 is a mechanism that transmits the driving force of the cutting motor 190 (see FIG. 6) to the movable plate 107. The power transmission unit 140 includes a rotating body 150, a fixing unit 160, and a through hole 170.

  The rotating body 150 is a disk having a thickness in the front-rear direction. The central portion of the rotator 150 is rotatably supported by a support shaft (not shown) protruding rearward from the fixed plate 105. In the present embodiment, the rotating body 150 is a gear having a plurality of teeth (not shown) formed on the outer peripheral surface. Hereinafter, although illustration is omitted, the cutting motor 190 is arranged in front of the fixed plate 105. The output shaft of the cutting motor 190 extends rearward, and a drive gear is fixed to the tip. The drive gear passes through the hole formed in the fixed plate 105 in the front-rear direction and meshes with the tooth portion of the rotating body 150. Therefore, the rotating body 150 rotates as the cutting motor 190 is driven. Hereinafter, the axis that becomes the rotation center of the rotating body 150 is referred to as an axis P. Also, the clockwise direction around the axis P is referred to as the forward direction (arrow T1 in FIG. 5), and the opposite direction to the forward direction is referred to as the reverse direction (arrow T2 in FIG. 5).

  A first pin 151, a second pin 152, and a third pin 153 are provided on the rear end surface 155 of the rotating body 150. All of the first pin 151, the second pin 152, and the third pin 153 are protrusions that protrude rearward from the rotating body 150, and are formed in a columnar shape that extends parallel to the axis P. The first pin 151 and the second pin 152 are in front of the movable plate 107, and the third pin 153 is inserted into a later-described through-hole 170 provided in the movable plate 107.

  The shape of the first pin 151 and the shape of the second pin 152 are the same as an example. The first pin 151 and the second pin 152 are arranged in a substantially straight line with the axis P therebetween. That is, the angle θ formed by the first line segment L1 connecting the center Q1 of the first pin 151 and the axis line P and the second line segment L2 connecting the center Q2 of the second pin 152 and the axis line P is approximately 180 degrees. . Further, the first pin 151 is located farther from the axis P than the second pin 152. Specifically, the first length (dimension W1 in FIG. 5), which is the total length of the first line segment L1 and the radius of the first pin 151, is the length of the second line segment L2 and the second pin. It is longer than the second length (dimension W2 in FIG. 5) which is the total length of the radius of 152.

The third pin 153 is at a position displaced from the first pin 151 by approximately 90 degrees in the reverse direction. Therefore, the third line segment L3 that connects the center Q3 of the third pin 153 and the axis P divides the angle θ into approximately two equal parts.
The outer diameter of the third pin 153 is the same as the outer diameter of the first pin 151 and the second pin 152. The length of the third line segment L3 is the same as the length of the first line segment L1. The length of the third pin 153 (the length in the front-rear direction) is longer than the length of each of the first pin 151 and the second pin 152.

  The fixed portion 160 is fixed to the front surface of the movable plate 107 on the left side of the first pin 151 and the second pin 152. That is, the fixing part 160 is provided on the left part which is the base part of the cutting blade 110. The fixing portion 160 includes a first contact portion 161 on the right end surface. The first contact portion 161 is a concave surface that is recessed toward the left, and the first pin 151 and the second pin 152 can alternatively contact each other. The first contact portion 161 includes an upper cam portion 162, a cam portion 163, and a lower cam portion 164. The upper cam portion 162 is a flat surface extending obliquely downward to the left. The cam portion 163 is a curved surface that curves in an arc shape. The upper end of the cam portion 163 is smoothly connected to the lower end of the upper cam portion 162. The radius of curvature of the cam portion 163 is the same as the second length (dimension W2). That is, the cam portion 163 is curved along the movement locus of the second pin 152. The lower cam portion 164 is a flat surface extending obliquely downward to the right. The upper end of the lower cam portion 164 is smoothly connected to the lower end of the cam portion 163.

  The through-hole 170 penetrates the right part of the movable plate 107 in the front-rear direction. The third pin 153 is inserted through the through hole 170. The through hole 170 includes a second contact portion 172. The 2nd contact part 172 is a site | part used as the right end among the inner wall surfaces of the through-hole 170, and is extended in an up-down direction. The third pin 153 that rotates together with the rotating body 150 contacts and separates only from the second contact portion 172 of the inner wall surface of the through-hole 170 and does not contact other inner wall surfaces.

  An outline of the electrical configuration of the printing apparatus 1 will be described with reference to FIG. The printing apparatus 1 includes a CPU 41. The CPU 41 performs overall control of the operation of the printing apparatus 1. The CPU 41 is connected to the ROM 42, the CGROM 43, the RAM 44, the flash memory 45, the head 10, the input unit 3, the drive motor 90, the cutting motor 190, and the detection unit 192. The ROM 42, the CGROM 43, and the flash memory 45 store various information necessary for the operation of the printing apparatus 1 non-temporarily or temporarily. The head 10 generates heat under the control of the CPU 41. The input unit 3 outputs the input information to the CPU 41. The drive motor 90 and the cutting motor 190 are pulse motors as an example. The drive motor 90 and the cutting motor 190 are driven by the pulse signal transmitted from the CPU 41. The cutting motor 190 is provided inside the main body case 2 (see FIG. 1). The detection unit 192 can detect the rotational position of the rotating body 150. The detection unit 192 is an optical sensor as an example, and can detect the right end of the movable plate 107 at the right end of the movable range. When the detection unit 192 detects the movable plate 107, the rotating body 150 is in the initial position. The CPU 41 drives and controls the cutting motor 190 based on the detection result of the detection unit 192.

  The outline of the printing operation of the printing apparatus 1 will be described with reference to FIGS. 1 and 2. The cover 6 closes the main body case 2 and the printing apparatus 1 is ready for printing. The head 10 and the drive motor 90 are driven. The ink on the ink ribbon between the head 10 and the platen roller 15 is transferred to the film tape 59 by the heat generated by the head 10. As a result, printing is performed on the film tape 59. The ribbon take-up shaft 95 and the drive shaft 94 are rotated by the drive force of the drive motor 90. The tape driving roller 46 conveys the printing tape 37 to the front side in cooperation with the conveying roller, and pulls out the double-sided adhesive tape 58 from the first tape spool and guides and adheres it to the film tape 59. The print tape 37 is discharged from the discharge port 11 via the transport roller and the tape drive roller 46 and the tape discharge unit 40 in order.

  With reference to FIGS. 7 and 8, the operation of the cutting apparatus 100 for cutting the printed print tape 37 will be described. For the sake of clarity, the printing tape 37 is not shown in FIGS. 7B and 7C (the same applies to FIGS. 8B and 8C).

  Before the cutting device 100 starts the cutting operation, the printed printing tape 37 is disposed on the receiving surface 125A, and the rotating body 150 is in the initial position (see FIGS. 7A and 8A). . When the rotating body 150 is in the initial position, the first pin 151 is below the axis P, the second pin 152 is above the axis P, and the third pin 153 is to the right of the axis P. At this time, both the first pin 151 and the second pin 152 are separated from the first contact portion 161 to the right, and the third pin 153 is in contact with the second contact portion 172. Accordingly, the movable plate 107 is held at the right end position of the movable range, and the cutting blade 110 is positioned at a standby position that is separated from the printing tape 37 to the right.

  As shown in FIGS. 7A and 7B, the cutting motor 190 (see FIG. 6) is driven, and the rotating body 150 rotates in the forward direction (arrow T1). The third pin 153 is separated from the second contact portion 172, and the first pin 151 is in contact with the lower cam portion 164. The first pin 151 rotating in the forward direction urges the first contact portion 161 to the left while sliding with the lower cam portion 164, so that the cutting blade 110 moves to the left together with the movable plate 107. The blade 111 sandwiches the printing tape 37 between the receiving surface 125A (see FIG. 7B).

  As shown in FIG. 7C, the first pin 151 slides with the cam portion 163 to urge the first contact portion 161 to the left. Although the amount of movement of the cutting blade 110 relative to the amount of rotation of the rotating body 150 decreases, the cutting blade 110 further moves to the left. The cradle 125 moves to the left against the urging force of the urging means 135 by an amount less than the movable plate 107. The amount of elastic deformation of the urging means 135 increases, and the urging force from the urging means 135 acting on the cradle 125 increases. Thereby, the force which pinches | interposes the printing tape 37 with the blade part 111 and the receiving surface 125A increases, and the blade part 111 begins to make a cut in the printing tape 37.

  When the first pin 151 contacts the vertical center of the cam portion 163, the first line segment L1 and the second line segment L2 are both parallel to the left-right direction, which is the moving direction of the cutting blade 110. At this time, the blade portion 111 and the two protrusions 109 simultaneously contact the receiving surface 125A, and the printing tape 37 is cut off with the blade portion 111 as a boundary and completely cut (not shown). Hereinafter, the position of the cutting blade 110 at this time is referred to as a full cut position. The angle at which the rotating body 150 rotates from the initial position before the cutting blade 110 moves from the standby position to the full cut position is referred to as a first predetermined angle. The first predetermined angle in the present embodiment is approximately 90 degrees. When the cutting blade 110 is in the full cut position, the urging force that the cradle 125 receives from the urging means 135 is 7 kgf (about 68.6 N). That is, the cutting force with which the cutting blade 110 fully cuts the printing tape 37 is 7 kgf. Note that the dimension N1 shown in FIG. 7C indicates the length of the urging means 135 in the left-right direction when performing a full cut.

  The cutting motor 190 temporarily stops driving after a full cut of the printing tape 37 and then drives in the opposite direction. The rotating body 150 rotates in the reverse direction (arrow T2). As shown in FIG. 7B, in the process in which the first pin 151 rotates in the reverse direction, the cradle 125, the cutting blade 110, and the movable plate 107 are slightly moved rightward by the urging force of the urging means 135. Moving. The third pin 153 that rotates in the reverse direction contacts the second contact portion 172 and urges it to the right. The cutting blade 110 moves to the right together with the movable plate 107. As shown in FIG. 7A, when the rotating body 150 returns to the initial position, the cutting blade 110 returns to the standby position. The cutting motor 190 stops driving, and the cutting device 100 ends the full cut operation.

  With reference to FIG. 8, the half-cut operation | movement of the cutting device 100 is demonstrated. The rotating body 150 is in the initial position. As shown in FIGS. 8A and 8B, the cutting motor 190 is driven in the direction opposite to that at the start of the full cut operation, and the rotating body 150 rotates in the reverse direction (arrow T2). The third pin 153 is separated from the second contact portion 172, and the second pin 152 is in contact with the upper cam portion 162. The second pin 152 rotating in the reverse direction urges the first contact portion 161 to the left while sliding with the lower cam portion 164. Thereby, the cutting blade 110 moves to the left from the standby position. The blade 111 holds the printing tape 37 between the receiving surface 125A (see FIG. 8B).

  As shown in FIG. 8C, the second pin 152 further rotates in the reverse direction and slides with the cam portion 163. The cutting blade 110 further moves to the left, and the cradle 125 moves to the left against the urging force of the urging means 135. The amount of elastic deformation of the biasing means 135 increases, and the force with which the receiving surface 125A and the blade portion 111 sandwich the printing tape 37 increases. As a result, the blade 111 makes a cut in the printing tape 37. When the second pin 152 comes into contact with the central portion in the vertical direction of the cam portion 163, the blade portion 111 reaches the leftmost at the time of half cut. Since the second length (dimension W2 in FIG. 5) is shorter than the first length (dimension W1 in FIG. 5), the blade 111 does not move to the left as compared to when full cut is performed. Thereby, the blade part 111 cut | disconnects the double-sided adhesive tape 58 (refer FIG. 2) and the film tape 59 (refer FIG. 2), leaving the release paper 57 (refer FIG. 2). That is, the cutting blade 110 half-cuts the printing tape 37. Hereinafter, the position of the cutting blade 110 at this time is referred to as a half-cut position. In addition, the angle at which the rotating body 150 rotates from the initial position until the cutting blade 110 moves from the standby position to the half-cut position is referred to as a second predetermined angle. The second predetermined angle in the present embodiment is approximately 90 degrees. When the cutting blade 110 is in the half-cut position, the urging force that the cradle 125 receives from the urging means 135 is 4 kgf (about 39.2 N). That is, the cutting force with which the cutting blade 110 half-cuts the printing tape 37 is 4 kgf. Note that the dimension N2 shown in FIG. 7C indicates the length in the left-right direction of the urging means 135 when half-cutting is performed. The dimension N2 is longer than the dimension N1 (see FIG. 7C).

  The cutting motor 190 temporarily stops driving and then drives in the opposite direction. The rotating body 150 rotates in the positive direction (arrow T1). As shown in FIG. 8B, the third pin 153 comes into contact with the second contact portion 172 and biases to the right. As shown in FIG. 8A, when the rotating body 150 returns to the initial position, the cutting blade 110 returns to the standby position. The cutting motor 190 stops driving, and the cutting device 100 ends the half-cut operation.

  As described above, when the rotating body 150 at the initial position rotates in the forward direction by the first predetermined angle, the first pin 151 moves the cutting blade 110 from the standby position to the full cut position. When the rotator 150 at the initial position rotates in the opposite direction by a second predetermined angle, the second pin 152 moves the cutting blade 110 from the standby position to the half cut position. Further, after the printing tape 37 is cut, when the rotating body 150 rotates to the standby position, the third pin 153 moves the cutting blade 110 to the standby position. Thus, the rotating body 150 provided with the first pin 151, the second pin 152, and the third pin 153 has a function of causing the cutting blade 110 to perform full-cut and half-cut cutting, and a cutting blade that has finished cutting. It also has a function of returning 110 to the standby position. Accordingly, since the number of components of the cutting device 100 is reduced, the mechanism of the cutting device 100 is simplified. Therefore, the cutting apparatus 100 and the printing apparatus 1 that can perform full cut and half cut of the printing tape 37 with a simple mechanism including a small number of parts are realized. Further, since the mechanism is simplified, the cutting device 100 (that is, the printing device 1) can be reduced in size and cost.

  The first pin 151, the second pin 152, and the third pin 153 are all provided on the rear end surface 155 of the rotating body 150. Thereby, the error of the position where each pin is provided can be made as small as possible. In particular, the error in the position of the first pin 151 and the second pin 152 affects the amount of movement of the cutting blade 110, but the error in the position of each pin can be reduced. Accuracy can be improved. Furthermore, the third line segment L3 divides the angle θ (see FIG. 5) into approximately two equal parts. Thereby, the first predetermined angle and the second predetermined angle are substantially the same. Therefore, since the rotation control of the rotating body 150 is simplified, the drive control of the cutting motor 190 by the CPU 41 is simplified.

  When the cutting blade 110 cuts the printing tape 37, the urging force of the urging means 135 is transmitted as a reaction force to the first pin 151 or the second pin 152 via the cradle 125 and the cutting blade 110. When the cutting of the printing tape 37 is completed, in order for the rotating body 150 to return to the initial position by the reaction force, it is necessary to urge the first pin 151 downward or the second pin 152 upward. However, in the present embodiment, at the end of cutting of the printing tape 37, the first line segment L1 and the second line segment L2 are substantially parallel to the moving direction of the cutting blade 110. Thereby, the reaction force transmitted to the 1st pin 151 or the 2nd pin 152 at the time of the cutting | disconnection of the printing tape 37 turns to the right direction. Therefore, when the cutting blade 110 half-cuts or full-cuts the printing tape 37, the rotating body 150 is difficult to rotate in the direction to return to the initial position. Therefore, the cutting device 100 can stably cut the printing tape 37.

  The cam portion 163 of the first contact portion 161 has a curved shape along the movement locus of the second pin 152. Accordingly, when the cutting device 100 performs the half-cut operation for a plurality of times, even if the second predetermined angle at which the second pin 152 rotates varies, the cutting blade 110 that moves from the standby position to the half-cut position. The amount of movement is unlikely to fluctuate. In the half-cut of this embodiment in which the double-sided adhesive tape 58 and the film tape 59 are cut without making a break in the release paper 57, the moving amount of the cutting blade 110 needs to be controlled with high accuracy. Since the amount of movement is less likely to fluctuate, the cutting device 100 can stably half-cut the printing tape 37.

  The first pin 151 and the second pin 152 are both the inner wall surface of the through-hole 170 (that is, the second contact portion 172) until the rotating body 150 returns to the initial position after the printing tape 37 is fully cut or half cut. ). Therefore, the printing apparatus 1 can stably return the cutting blade 110 that has been fully cut or half cut to the standby position.

  The cutting blade 110 that performs full cut or half cut presses the cradle 125 against the biasing force of the biasing means 135. At this time, the urging force of the urging means 135 acting on the cradle 125 corresponds to a cutting force with which the cutting blade 110 cuts the printing tape 37. Further, the amount of movement of the cutting blade 110 that affects the biasing force of the biasing means 135 is unlikely to fluctuate. Therefore, since the cutting force at the time of full cut or half cut is stabilized, the cutting blade 110 can reliably perform full cut or half cut on the printing tape 37.

  In the above embodiment, the print tape 37 is an example of the “print medium” of the present invention. The first pin 151 is an example of the “first protrusion” in the present invention. The second pin 152 is an example of the “second protrusion” in the present invention. The third pin 153 is an example of the “third protrusion” in the present invention. “Rear side” is an example of “one side”. The rear end surface 155 is an example of the “one surface” in the present invention. The head 10 is an example of the “printing unit” in the present invention.

  In addition, this invention is not limited to the said Example. The cutting device 100 may include a fixed blade instead of the cradle 125 and the urging means 135. The fixed blade faces the cutting blade 110. In this case, the cutting blade 110 that moves to the full-cut position or the half-cut position can fully or half-cut the printing tape 37 with the fixed blade. The cutting device 100 may replace the printing tape 37 with, for example, full-cut or half-cut the tube. The biasing means 135 is not limited to a compression spring as long as it can bias the cradle 125 toward the blade portion 111. The biasing means may be, for example, a torsion spring, a tension spring, or a leaf spring.

  Instead of projecting backward from the fixed plate 105, the support shaft that rotatably supports the rotating body 150 may project forward from the holder 139, for example. In this case, the movable plate 107 is provided with an insertion hole through which the support shaft is inserted. The insertion hole is provided so that the moving movable plate 107 does not contact the support shaft.

  The shape of the first pin 151 and the shape of the second pin 152 need not match. For example, the outer diameter of the first pin 151 may be larger than the outer diameter of the second pin 152. In this case, the first pin 151 and the second pin 152 may be provided at positions where the length of the first line segment L1 and the length of the second line segment L2 are the same. Even in such a positional relationship, since the radius of the first pin 151 is larger than the radius of the second pin 152, the first length (dimension W1 in FIG. 5) is the second length (dimension in FIG. 5). Longer than W2).

  The cam portion 163 may have a curved shape along the movement locus of the first pin 151. At this time, when the cutting device 100 performs the full cut operation a plurality of times, even if the first predetermined angle at which the first pin 151 rotates varies, the cutting blade 110 moves from the standby position to the full cut position. The amount of movement is less likely to fluctuate. In the full cut that completely cuts both the double-sided adhesive tape 58 and the film tape 59, the moving amount of the cutting blade 110 needs to be controlled with high accuracy, but the moving amount of the cutting blade 110 is less likely to fluctuate. Therefore, the cutting device 100 can stably fully cut the printing tape 37.

  The cutting apparatus 100 may not include the detection unit 192. For example, information of a pulse signal for driving and controlling the cutting motor 190 may be written in a program stored in the ROM 42. When the CPU 41 reads the program stored in the ROM 42, the cutting device 100 can execute the same operation as in the above embodiment.

  The cutting device 100 may not include the cutting motor 190. In this case, the main body case 2 may include a knob connected to the rotating body 150. The user may move the rotary member 150 at the initial position to the full cut position or the half cut position by manually operating the knob. Further, a part of the rotating body 150 may be exposed to the outside from the main body case 2. In this case, the user operates to rotate the rotating body 150 directly. At this time, the rotating body 150 may be, for example, a fan shape or a columnar shape instead of the disk shape.

  In the above description, the descriptions “approximately 180 degrees”, “approximately 90 degrees”, “approximately parallel”, and “approximately bisected” mean that manufacturing tolerances and errors are allowed in design. In addition to “180 degrees”, “90 degrees”, “parallel”, “bisected” in the strict sense, “substantially 180 degrees”, “substantially 90 degrees”, “substantially parallel” ”And“ substantially bisected ”.

DESCRIPTION OF SYMBOLS 1 Printing apparatus 37 Printing tape 10 Head 100 Cutting apparatus 110 Cutting blade 111 Blade part 125 Receptacle 135 Energizing means 139 Holder 150 Rotating body 151 1st pin 152 2nd pin 153 3rd pin 155 Front end surface 161 1st contact part 163 Cam portion 172 Second contact portion L1 First line segment L2 Second line segment L3 Third line segment P Axis Q1, Q2, Q3 Center θ Angle

Claims (7)

A cutting device for cutting a print medium,
A cutting blade having a blade at the tip;
A holder for supporting a base of the cutting blade, wherein the cutting blade has a full cut position at which the print medium can be completely cut, a half cut position at which the print medium can be cut with a part thereof, and A holder that is movably supported over a standby position away from the print medium;
A rotating body that is rotatably supported and provided with a first protrusion, a second protrusion, and a third protrusion;
A first abutting portion provided on the base of the cutting blade and capable of selectively abutting the first protrusion and the second protrusion;
A second abutting portion provided on the base of the cutting blade, capable of abutting on the third protrusion, and different from the first abutting portion;
When the rotating body is in the initial position, the first protrusion and the second protrusion are both separated from the first contact portion, and the third protrusion is in contact with the second contact portion. The cutting blade is located at the standby position;
When the rotating body rotates by a first predetermined angle in the positive direction from the initial position, the third protrusion is separated from the second contact portion, and the first protrusion is in contact with the first contact portion. Moving the cutting blade from the standby position to the full cut position;
When the rotating body rotates by a second predetermined angle in the reverse direction from the initial position, the third protrusion is separated from the second contact portion, and the second protrusion is in contact with the first contact portion. A cutting apparatus for moving the cutting blade from the standby position to the full cut position. The first protrusion, the second protrusion, and the third protrusion are all provided on one surface of the rotating body,
The first protrusion is a cylindrical first pin extending in parallel with an axis serving as a rotation center of the rotating body,
The second protrusion is a cylindrical second pin extending in parallel with the first pin,
The third protrusion is a cylindrical third pin extending in parallel with the first pin,
A line segment connecting the center of the first pin and the axis of the rotating body is defined as a first line segment, and a line segment connecting the center of the second pin and the axis of the rotating body is defined as a second line segment. And a line segment connecting the center of the third pin and the axis of the rotating body is a third line segment,
The first pin and the second pin are the sum of the length of the first line segment and the radius of the first pin, the sum of the length of the second line segment and the radius of the second pin. Provided at a position longer than the length,
The said 3rd pin is provided in the position which divides the angle which the said 3rd line segment makes with the said 1st line segment and the said 2nd line segment into two substantially equal parts. Cutting device. The angle formed by the first line segment and the second line segment is approximately 180 degrees,
The first predetermined angle and the second predetermined angle are both approximately 90 degrees,
The axis of the rotating body is at a position between the first contact portion and the second contact portion,
When the cutting blade is in the standby position, the third line segment is substantially parallel to the moving direction of the cutting blade, and the third pin contacts the second contact portion,
When the cutting blade is in the full cut position, the first line segment is parallel to the moving direction of the cutting blade, and the first pin is in contact with the first contact portion,
When the cutting blade is in the half-cut position, the second line segment is parallel to the moving direction of the cutting blade, and the second pin contacts the first contact portion. The cutting device according to claim 2. The first contact portion is a cam portion that is curved along the movement locus of the first pin or the second pin,
The first pin is in contact with the first contact portion to move the cutting blade to the full cut position,
The cutting apparatus according to claim 2 or 3, wherein the second pin contacts the first contact portion to move the cutting blade to the half-cut position. The third pin is longer than each of the first pin and the second pin,
The second abutting portion includes the first pin and the second pin while the rotating body rotates the first predetermined angle from the initial position and while the rotating body rotates the second predetermined angle from the initial position. The cutting device according to any one of claims 2 to 4, wherein the cutting device is provided at a position that is separated from the pin and is capable of contacting the third pin. The blade portion of the cutting blade is abuttable, and a cradle provided movably;
Urging means for urging the cradle in a direction approaching the blade part, and
When the cutting blade is in the full cut position, the urging force of the urging means acting on the cradle that contacts the blade portion is in contact with the blade portion when the cutting blade is in the half cut position. The cutting device according to any one of claims 1 to 5, wherein the cutting device is larger than an urging force of the urging means acting on the receiving table in contact therewith. A cutting device according to any one of claims 1 to 6;
A printing apparatus comprising: a printing unit that prints the print medium.

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