JP4545077B2 - Mount reel - Google Patents

Description

  The present invention relates to a mount winding shaft used in a label printer that prints predetermined items on a label and peels and issues the printed label from continuous paper.

  Conventionally, a continuous paper with a label attached is guided and conveyed to a predetermined guide route, a predetermined matter is printed on the label in the process, and the printed paper is peeled off from the continuous paper by bending the continuous paper at an acute angle. Label printers having such a structure are widely used. In such a label printer, although it is an example of the configuration, the mount after peeling the label constituting the continuous paper is wound and held on the mount winding shaft. Therefore, when the continuous paper is used up, it is necessary to remove the mount wound from the mount winding shaft.

  The mount is tightly wound around the mount winding shaft, and it is difficult to remove the mount. For this reason, various structures for supporting the work of removing the mount from the mount take-up shaft have been proposed and put into practical use. As an example, there is a structure in which a clamp is detachably mounted on a mount winding shaft along the axial direction. The clamp has a mount hooking portion that bends in a direction orthogonal to the axial direction of the mount take-up shaft on the front end side in the mounting direction with respect to the mount take-up shaft. With this, the end surface of the mount is hooked to facilitate the work of pulling out the mount. The thing of such a structure is described in patent document 1, for example.

Japanese Utility Model Publication No. 05-026418

  Since the structure described in Patent Document 1 is pulled out by hooking the end surface of the mount at the mount portion of the clamp, the force can be applied evenly in the radial direction of the mount, and the mount is pulled out from the mount winding shaft. Can be made easier. However, when the clamp is pulled out from the mount winding shaft, there is a problem that a strong force is required because the mount is firmly wound around the mount winding shaft.

  An object of the present invention is to enable the mount to be removed from the mount take-up shaft without requiring a strong force.

The present invention provides a substrate on which a mount is wound by rotating by applying a rotational driving force, a flange disposed on a side of the substrate and guiding the mount to be wound and held, and the mount between the substrate. A clamper to be clamped, a movable body that is held so as to be able to move close to and away from the rotation axis of the base, an operation unit that is disposed so as to be displaceable within a predetermined range at a position other than the mount winding region of the base, and A power transmission mechanism that converts the displacement of the operation portion into movement in the proximity and separation direction of the movable body with respect to the rotation axis of the base, and the operation portion is opposite to the side where the flange is disposed. Located on the side of the side, is attached to the base body so as to be rotatable between a first rotation position and a second rotation position about an axis parallel to the rotation axis thereof, and the power transmission mechanism is Rotation with operation part rotation The cam surface has a cam surface whose distance from the rotation axis of the base varies in accordance with the rotation position, and is formed by a cam that abuts the cam surface against the back surface of the movable body. With the part positioned at the first rotation position , the movable body is positioned at a position away from the rotation axis of the base body, and the operation unit is positioned at the second rotation position. The movable body is positioned at a position where the movable body can approach the rotation axis of the base body, and the movable body has one end surface extending to the position of the operation portion and until the extended portion interferes with the operation portion. A groove portion formed in the operation portion in a shape that includes a projecting first protrusion, and the operation portion avoids interference with the protrusion that moves due to the movement of the moving body accompanying the rotation of the operation portion. And projecting in the groove, and the operating portion is rotated. A second protrusion overcoming the first protrusion in contact with the first rotation position at a position immediately before the first rotation position; and a protrusion formed in the groove; And a third protrusion overcoming the first protrusion at a position immediately before being positioned at the rotational position.
The present invention provides a substrate on which a mount is wound by rotating by applying a rotational driving force, a flange disposed on a side of the substrate and guiding the mount to be wound and held, and the mount between the substrate. A clamper to be clamped, a movable body that is held so as to be able to move close to and away from the rotation axis of the base, an operation unit that is disposed so as to be displaceable within a predetermined range at a position other than the mount winding region of the base, and A power transmission mechanism that converts the displacement of the operation portion into movement in the proximity and separation direction of the movable body with respect to the rotation axis of the base, and the operation portion is opposite to the side where the flange is disposed. Located on the side of the side, is attached to the base body so as to be rotatable between a first rotation position and a second rotation position about an axis parallel to the rotation axis thereof, and the power transmission mechanism is Rotation with operation part rotation The cam surface has a cam surface whose distance from the rotation axis of the base varies in accordance with the rotation position, and is formed by a cam that abuts the cam surface against the back surface of the movable body. With the part positioned at the first rotation position , the movable body is positioned at a position away from the rotation axis of the base body, and the operation unit is positioned at the second rotation position. The movable body is positioned at a position where the movable body can approach the rotation axis of the base body, the clamper is held at one end by the flange, and the operation unit is moved from the second rotation position to the first rotation position. The free end of the clamper is held in accordance with the rotating operation.

  According to the present invention, when the mount is taken up by clamping the mount onto the clamper with the moving body being separated from the base to start the mount winding operation, the base is wound on the base. By making the moving body approach, the mount can be removed from the mount take-up shaft without requiring a strong force.

  An embodiment of the present invention will be described with reference to FIGS. Here, the label printer 1 will be described, and then the mount winding shaft 101 will be described.

[Label printer 1]
First, the label printer 1 will be described with reference to FIGS.

  FIG. 1 is an overall perspective view of the label printer 1. The label printer 1 according to the present embodiment includes a printer mechanism 3 inside a main body case 2, and includes a liquid crystal display 4 with a touch panel on the upper portion of the main body case 2 and a keyboard 5 on the upper surface of the main body case 2. In addition, in appearance, the main body case 2 is provided with a label issuing port 6 on the front surface thereof. The label issuing port 6 is formed in a size that allows human hands to enter.

  FIG. 2 is an overall side view virtually showing the internal structure. Here, the printer mechanism 3 built in the main body case 2 will be described. First, inside the main body case 2 is provided a paper holding portion 9 for storing and holding the continuous paper 8 with the label 7 attached in a roll shape. The paper holding portion 9 holds and pulls out the paper. A guide path 10 is provided for guiding the continuous paper 8 along a predetermined path. In the middle of the guide path 10, a printing unit 13 composed of a platen 11 and a line thermal head 12 that are opposed to each other with the guide path 10 interposed therebetween, and a peeling plate that is located on the downstream side of the sheet conveyance path from the printing unit 13. 14 are arranged. Further, at the end of the guide path 10, a mount winding mechanism 16 that winds the mount 15, which is the continuous paper 8 after the label 7 is peeled, onto the mount winding shaft 101 is disposed. Each of these parts will be described in detail below.

  FIG. 3 is an enlarged vertical side view showing the printing unit 13, the peeling plate 14, and the label issuing port 6. The printing unit 13 has a unit structure in which the platen 11 and the line thermal head 12 are attached to the head frame 17. That is, the platen 11 is rotatably attached to the head frame 17 so as to be driven to rotate by a drive unit (not shown). The line thermal head 12 is attached to a head bracket 18 that is rotatably attached to the head frame 17. The head bracket 18 holds the line thermal head 12 so that the line thermal head 12 can abut a heating element (not shown) against the platen 11. A leaf spring 19 is flexibly attached to the head bracket 18, and the leaf spring 19 is pressed by a cam mechanism 20, whereby a heating element (not shown) of the line thermal head 12 is pressed against the platen 11. Further, an elastic body 21 for guiding the continuous paper 8 while removing slack of the continuous paper 8 and a guide pin 22 for smoothly guiding the continuous paper 8 between the platen 11 and the line thermal head 12 are attached to the head frame 17. It has been. Therefore, the continuous paper 8 is guided to the guide path 10 by the elastic body 21, the guide pins 22 and the printing unit 13, and is conveyed by the rotation of the platen 11. Therefore, the elastic body 21, the guide pin 22, and the printing unit 13 constitute a paper transport mechanism.

  FIG. 4 is a perspective view showing a mounting state of the mount winding shaft 101 with respect to the winding shaft holder. The mount winding mechanism 16 includes a winding shaft holder 25. The take-up shaft holder 25 is formed by bending a sheet metal into a U-shape, and has a pair of U-shaped take-up shaft holding grooves 26 at the upper portions of two opposed pieces. A shaft member 102 (see FIG. 7 for details) of the mount winding shaft 101 is detachably mounted in these winding shaft holding grooves 26. The take-up shaft holder 25 includes a pair of take-up shaft holders 27 at the position of the take-up shaft holding groove 26.

  The take-up shaft holder 25 has a gear train 28 located in the vicinity of one take-up shaft holding groove 26. The gear train 28 includes a drive gear 28a and an idler gear 28b. The drive gear 28a is rotated by receiving power from a drive source (not shown) such as a motor. The idler gear 28b is positioned at a position where the driven gear 103 (see FIG. 7 and the like for details) provided on the mount winding shaft 101 mounted on the winding shaft holder 25 is engaged.

  FIG. 5 is an exploded perspective view showing a holding structure of the mount winding shaft 101 in the winding shaft holder 25. The take-up shaft holding body 27 is formed by a pair of clamping bodies 30 attached to a fulcrum 29 so as to rotate to the left and right objects. These clamping bodies 30 are urged by a ring-shaped spring 31 and are positioned in a direction in which the tip portions thereof are close to each other. Therefore, the take-up shaft holder 27 can push open the tip portions close to each other against the force of the spring 31.

  FIG. 6 is a side view showing a holding structure of the mount winding shaft 101 in the winding shaft holder 25. Nipping pieces 32 each having an upper inclined surface 32 a and a lower inclined surface 32 b are formed at the distal ends of the pair of holding members 30 constituting the winding shaft holder 27. These clamping pieces 32 are arranged with their tip portions that are intersections of the upper inclined surface 32a and the lower inclined surface 32b facing each other. The upper inclined surface 32 a is inclined toward the mounting direction of the mount winding shaft 101 with respect to the take-up shaft holding groove 26, and the lower inclined surface 32 b is formed in the pulling direction of the mount winding shaft 101 from the take-up shaft holding groove 26. It is inclined towards it. Therefore, the take-up shaft holding body 27 has an operation of mounting the shaft member 102 of the mount winding shaft 101 on the take-up shaft holding groove 26 and the shaft member of the mount take-up shaft 101 from the take-up shaft holding groove 26. Along with the operation of pulling out 102, the pair of sandwiching bodies 30 rotate in a direction to open the tip portion against the force of the spring 31. When the shaft member 102 of the mount winding shaft 101 is mounted in the winding shaft holding groove 26, the shaft member 102 is held in a state of being placed on the bottom of the winding shaft holding groove 26. The lower inclined surface 32b of the winding shaft holder 27 prevents the shaft member 102 from coming off.

  The label printer 1 according to the present embodiment configured as described above is supplied with power from a commercial power source, and performs a printing operation by driving and controlling each unit by a microcomputer (not shown) built in the main body case 2.

  In such a configuration, when the platen 11 is driven to rotate, the continuous paper 8 is guided and conveyed along the guide path 10 and is stuck to the continuous paper 8 by the line thermal head 12 that contacts the platen 11 via the guide path 10. Predetermined items are printed on the label 7. At the same time, power is transmitted from a drive source (not shown) such as a motor to the driven gear 103 of the mount winding shaft 101 through the gear train 28, and the mount 15 forming a part of the continuous paper 8 is transferred to the mount winding shaft 101. It is wound up. At this time, the take-up speed of the mount 15 by the mount take-up shaft 101 is set faster than the conveyance speed of the continuous paper 8 in the printing unit 13 so that no slip occurs at the print position. The continuous paper 8 is in a stretched state. For this reason, tension is applied to the continuous paper 8 bent at an acute angle by the peeling portion 14, and the printed label 7 is peeled from the continuous paper 8, and the peeled label 7 is issued from the label issuing port 6.

[Mounting shaft 101]
Next, the mount winding shaft 101 will be described with reference to FIGS.

  FIG. 7 is a perspective view of the mount winding shaft 101. The mount winding shaft 101 has a metal support shaft 104 on its rotation axis, and a substantially cylindrical base body 105 mounted on the winding shaft holder 25 shown in FIG. It is configured as a basic. The base body 105 is an integrally molded product using a resin mold, and has a mount winding portion 106 that winds the mount 15 around the outer peripheral surface thereof. The mount winding shaft 101 rotates to wind the mount 15 around the mount winding portion 106.

  The base 105 is provided with an operating portion 107a on one side and a flange 107b on the other side. The operation unit 107a is attached to the base 105 so as to be rotatable about an axis parallel to the rotation axis, more specifically, coaxially with the rotation axis. Such a rotation range of the operation unit 107a is a range between a first rotation position FP and a second rotation position SP, which will be described later with reference to FIGS. Accordingly, the operation unit 107a is disposed so as to be displaceable within a predetermined range at a position deviating from the mount winding region of the base 105. The flange 107 b guides the side portion of the mount 15 that is wound around the base body 105. Such a flange 107b has the driven gear 103 described above on its outer peripheral surface. The driven gear 103 is integrally formed with the flange 107b.

  The base body 105 is provided with a clamper 108 that clamps the base paper 15 between the base paper 105 and the base paper winding unit 106. The clamper 108 is a plate-like member positioned over the entire width between the operation unit 107a and the flange 107b. Similar to the base body 105, the clamper 108 is also formed by integral molding using a resin mold.

  The base body 105 is further provided with a moving body 109 that is positioned over the entire width between the operation unit 107 a and the flange 107 b and forms a part of the mount winding unit 106. The moving body 109 is held so as to be able to approach and separate from the support shaft 104 of the base body 105. Similar to the base body 105 and the clamper 108, the moving body 109 is also formed by integral molding using a resin mold.

  FIG. 8 is an exploded perspective view of the mount winding shaft 101. FIG. 9 is a perspective view of the moving body 109. FIG. 10 is a plan view of the end portion of the moving body 109.

  The base body 105 has a wall body 110 that allows the operation unit 107a to be attached to one end side, and has a flange 107b on the other end side. The wall body 110 and the flange 107b are a plurality of rib-shaped members 111. It has a connected structure. The rib-shaped member 111 has a structure in which a plurality of ribs 112 are connected to each other by a connecting portion 113 to hold the shape, and the mount winding portion 106 is configured on the outer surface thereof. The rib-like member 111 has a U groove 114 at the center thereof, and a cam member 115 is disposed in the U groove 114. The cam member 115 is a molded member formed of a resin mold in which four cams 118 are integrally formed on the outer peripheral surface of a cylindrical cam member base portion 117 having a first insertion hole 116 in the center. The cam 118 has a cam surface 118a on its outer peripheral surface.

  As shown in FIG. 8, the cam member 115 is held by the base body 105 by inserting the support shaft 104 in a state of being accommodated in the U groove 114 of the rib-like member 111. As a structure for this purpose, the cam member 115 is formed with a first insertion hole 116 that allows the support shaft 104 to be inserted. An insertion hole for inserting the support shaft 104 is also formed in the operation portion 107a and the flange 107b. A second insertion hole 119 is formed in the operation unit 107a. A third insertion hole 120 is formed in the flange 107b. Further, a connecting hole 121 is formed in the wall body 110. The first to third insertion holes 116, 119, 120 are formed to have a diameter through which the support shaft 104 is inserted with a slight gap that allows play. On the other hand, the connecting hole 121 formed in the wall body 110 is formed to have a larger diameter than the first to third insertion holes 116, 119 and 120.

  As described above, the operation unit 107 a is attached to the base body 105 so as to be rotatable about an axis parallel to the support shaft 104. Therefore, a structure for transmitting the rotation of the operation unit 107a to the cam member 115 is provided. As a structure for this purpose, a connecting boss 122 that fits into the connecting hole 121 is formed to protrude from the operation portion 107a. The connecting boss 122 has a structure in which the tip end is fitted and connected to the end of the cam member 115. That is, two large and small connecting protrusions 123 are formed to protrude from the tip of the connecting boss 122. Then, at the end of the cam member 115 to be connected to the front end of the connection boss 122, two large and small connection recesses 124 that fit into the connection protrusions 123 are formed. Therefore, the connection protrusion 123 fits into the connection recess 124 only at a certain rotation angle. As long as the fitted state is maintained, the rotation operation of the operation unit 107 a is transmitted to the cam member 115.

  As described above, the moving body 109 is held so as to be able to approach and separate from the support shaft 104 of the base body 105. As a structure for this purpose, the base body 105 has four studs 125 erected in the direction orthogonal to the support shaft 104, and the moving body 109 has stud holes 126 into which the studs 125 are fitted. Yes. Accordingly, the moving body 109 is movable along the stud 125 in a direction orthogonal to the support shaft 104, that is, a direction approaching and separating from the support shaft 104.

  FIG. 11 is a side view showing a structure for attaching one end of the moving body 109 to the base body 105. As shown in FIGS. 9 and 10, a pair of engaging claws 127 are formed on one end surface 109a of the moving body 109 so as to be elastically deformable in the longitudinal direction, and the wall body 110 is engaged with them. A pair of engagement holes 128 are formed in which the claws 127 are elastically deformed and engaged. The engaging claw 127 includes a base portion 127a extending downward from a position offset from one end surface 109a of the moving body 109, and a claw portion 127b protruding from the distal end portion of the base portion 127a toward the longitudinal direction of the moving body 109. It consists of and. As shown in FIG. 10, the claw portion 127 b protrudes until it is in the same plane as the one end surface 109 a of the moving body 109. As shown in FIG. 11, the engagement hole 128 formed in the wall body 110 is formed such that the length in the vertical direction is larger than the height of the engagement claw 127. Therefore, one end surface 109a side of the moving body 109 is located on the position where the engagement claw 127 is located at the uppermost position with respect to the engagement hole 128 (FIG. 11A), and the engagement hole 128 is located at the lowermost position. It can freely move up and down between the positions (FIG. 11B).

  FIG. 12 is a side view showing a structure for attaching another end of the moving body 109 to the base body 105. As shown in FIG. 8, a pair of fitting pins 129 protrudes from the other end surface 109b of the moving body 109, and a pair of fitting holes into which the fitting pins 129 fit into the flange 107b. 130 is formed. As shown in FIG. 12, the fitting hole 130 formed in the flange 107b has a long hole shape that is long in the vertical direction. Therefore, the other end surface 109b side of the moving body 109 is positioned at the position where the fitting pin 129 is located at the uppermost position with respect to the fitting hole 130 (FIG. 12A), and the fitting pin 129 is located at the lowermost position. It can freely move up and down between the positions (FIG. 12B).

  As described above, the moving body 109 is movable along the stud 125 in a direction orthogonal to the support shaft 104, that is, in a direction approaching and separating from the support shaft 104. The movement is limited to a range in which the engaging claw 127 of the moving body 109 can move in the engaging hole 128 of the wall body 110 on the one end surface 109 a side of the moving body 109. On the other end surface 109b side, the range in which the fitting pin 129 of the moving body 109 can move within the fitting hole 130 of the flange 107b is limited.

  FIG. 13 is a schematic diagram illustrating an operating state of the power transmission mechanism. As described above, the rotation operation of the operation unit 107 a is transmitted to the cam member 115. As shown in FIGS. 8 and 13 (a) and 13 (b), two large and small coupling protrusions 123 formed at the distal end of the coupling boss 122 of the operation unit 107a and the end of the cam member 115 are formed. This is because the two large and small connecting recesses 124 are fitted to each other. Therefore, the rotational positions of the coupling protrusion 123 and the coupling recess 124 that are fitted to each other in accordance with the rotation operation of the operation unit 107a vary between FIG. 13A and FIG. As a result, the cam member 115 rotates, and the rotational position of the cam 118 varies between FIG. 13C and FIG. For convenience of explanation, as the rotation position of the operation unit 107a, the position shown in FIG. 13A is a first rotation position FP, and the position shown in FIG. 13B is a second rotation position SP.

  When the rotation of the operation unit 107a is transmitted and the cam member 115 rotates, the movable body 109 moves up and down by the action of the cam 118. That is, as shown in FIG. 13C, the cam 118 has a long radius portion having a length α and a short radius portion having a length β from the rotation center to the cam surface 118a. Assuming that the distance from the center of the support shaft 104 that forms the rotation center of the cam 118 to the mounting surface of the moving body 109 in the base body 105 is r, the length α, the length β, and the length r are: α> r> β relationship. However, since the length r and the length β may be the same length, the length α, the length β, and the length r only need to maintain a relationship of α> r ≧ β. Therefore, in a state where the long radius portion of the cam 118 is directed toward the moving body 109, the cam 118 separates the moving body 109 from the base 127a by a distance of α-r (FIG. 13C). )reference). This distance is a distance that does not exceed the movable range of the moving body 109. On the other hand, when the short radius portion of the cam 118 is directed toward the moving body 109, the cam 118 does not separate the moving body 109 from the base 127a (see FIG. 13D). For this reason, the moving body 109 can move within the movable range. Here, a power transmission mechanism is configured to transmit the rotation of the operation unit 107a by converting the rotation of the moving body 109 toward and away from the rotation axis of the base body 105.

  FIG. 14 is a schematic diagram of the operation unit 107a positioned at the first rotation position FP and the second rotation position SP, respectively. As shown in FIGS. 9 to 11, a first protrusion 131 is formed to protrude from one end surface 109 a of the moving body 109. The first protrusion 131 protrudes until it interferes with the operation unit 107a. In the operation portion 107a, a groove portion 132 is formed at a position facing one end surface 109a of the moving body 109 so as to avoid interference with the first protrusion 131. As described above, the moving body 109 is displaced in accordance with the rotation between the first rotation position FP and the second rotation position SP of the operation unit 107a, and the cam 118, which is the rotation axis of the base body 105, is displaced. Change the distance from the center of rotation. Therefore, the distance from the rotation axis of the base body 105 to the first protrusion 131 also varies with the turning operation of the operation unit 107a. When the distance from the rotation axis of the base body 105 to the first protrusion 131 when the operation unit 107a is located at the second rotation position is a distance γ, the operation unit 107a is located at the first rotation position. In this state, the distance is a distance γ + (α−r). Therefore, the first protrusion 131 is displaced between a position where the distance from the rotation axis of the base body 105 is the distance γ + (α−r) and a position where the distance γ is the distance along with the turning operation of the operation portion 107a. It will be. Therefore, the groove 132 formed in the operation portion 107a is distanced from the rotation axis of the base body 105 so as to avoid interference with the first protrusion 131 in accordance with the displacement of the first protrusion 131. Is formed into a shape that fluctuates.

  Here, the clamper 108 described above will be described. As shown in FIG. 8, the clamper 108 is attached to the base 105 on the side opposite to the moving body 109. In such a clamper 108, the other end face 108b is fixed to the flange 107b so that one end face thereof is a free end 108a. As a fixing structure, a pair of positioning pins 133 are formed to project from the other end face 108 b of the clamper 108, and a screw hole 134 is formed between these positioning pins 133. A positioning hole 135 for fitting the positioning pin 133 is formed in the flange 107b, and a screw insertion hole 136 is formed in alignment with the screw hole 134. Therefore, the clamper 108 is tightened by screwing the screw 137 from the screw insertion hole 136 to the screw hole 134 and tightening the positioning pin 133 in a state where the positioning pin 133 is fitted in the positioning hole 135 formed in the flange 107b. Held in a cantilevered state. In this state, the clamper 108 is positioned so as to fit in a recess 138 for positioning the clamper 108 formed on the base body 105 with a slight gap of about 0.4 mm (see FIG. 13).

  The clamper 108 is fixed in position in a state where the clamper 108 is fitted in a recess 138 formed in the base body 105 with a slight gap, and the base plate 105 has a fitting shape between the circumferential end of the clamper 108 and the base body 105. Can be sandwiched between the sheet take-up unit 106 and the mount sheet winding unit 106. Therefore, the mount winding shaft 101 has a structure for fixing the position of the free end 108 a of the clamper 108. That is, a protruding object 139 is formed to protrude from the free end 108a of the clamper 108, and the operation unit 107a is moved from the second rotational position SP to the first rotational position FP. A groove-shaped capturing portion 140 that captures and holds the captured object 139 in the process of turning toward the target is formed. As shown in FIG. 14, fitting and holding of the body 139 to be captured by the capturing unit 140 is performed only when the operation unit 107 a is positioned at the first rotational position FP (see FIG. 14A). When the operation unit 107a is positioned at the second rotational position SP, the capturing unit 140 drops from the captured object 139 (see FIG. 14B). In other words, fitting and holding of the body 139 to be captured by the capturing unit 140 occurs in the process of rotating the operation unit 107a from the second rotational position SP toward the first rotational position FP. By fitting from the first rotational position FP toward the second rotational position SP, the fitting and holding of the body 139 to be captured by the capturing unit 140 drops off. Thus, the free end 108a of the clamper 108 is fixed in position by fitting and holding the body to be captured 139 in the capture portion 140, and in this state, the clamper 108 is fitted into the recess 138 formed in the base body 105 with a slight gap. Each section is configured so that the mount 15 can be sandwiched between the mount winding section 106 and the mount.

  Here, the mount winding shaft 101 has a structural device for generating a sense of moderation when positioning the operation unit 107a at the first rotation position FP and the second rotation position SP. Such a structure will be described with reference to FIGS.

  FIG. 15 shows the positional relationship between the first protrusion 131 formed on the moving body 109 and the second protrusion formed on the groove 132 when the operation portion 107a is positioned at the first rotational position FP. It is a schematic diagram which shows. As shown in FIG. 15, a second protrusion 141 is formed to protrude in the groove 132. The second protrusion 141 is formed so as to get over the first protrusion 131 at a position just before the operation portion 107a rotates and is positioned at the first rotation position FP. Therefore, in the process in which the operation unit 107a rotates in the direction of the arrow in FIG. 15 toward the first rotation position FP, the second protrusion 141 comes into contact with the first protrusion 131, and then the first protrusion Get over the protrusion 131. At this time, a sense of moderation is transmitted to the operator who rotates the operation unit 107a.

  FIG. 16 shows the positional relationship between the first protrusion 131 formed on the moving body 109 and the third protrusion formed on the groove 132 when the operation portion 107a is positioned at the second rotational position SP. It is a schematic diagram which shows. As shown in FIG. 16, a third protrusion 142 is formed in the groove 132 so as to protrude. The third protrusion 142 is formed so as to get over the first protrusion 131 while contacting the first protrusion 131 at a position immediately before the operation portion 107a is rotated and positioned at the second rotation position SP. Accordingly, in the process in which the operation unit 107a rotates in the direction of the arrow in FIG. 16 toward the second rotation position SP, the third protrusion 142 abuts on the first protrusion 131, and then the first protrusion Get over the protrusion 131. At this time, a sense of moderation is transmitted to the operator who rotates the operation unit 107a.

  FIG. 17 illustrates the fourth protrusion formed on the capturing unit 140 included in the operation unit 107a and the captured object 139 formed on the clamper 108 when the operation unit 107a is positioned at the first rotational position FP. FIG. As shown in FIG. 17, a fourth protrusion 143 is formed to protrude in the capturing part 140. The fourth protrusion 143 moves the clamped body 139 at the position immediately before the trapped body 139 is trapped and held by the trapping section 140 as the clamper 108 rotates to the first rotational position FP. It is formed so as to get over while contacting. Therefore, in the process in which the operation unit 107a rotates toward the first rotation position FP, the fourth protrusion 143 comes into contact with the captured object 139 and then gets over the captured object 139. At this time, a sense of moderation is transmitted to the operator who rotates the operation unit 107a.

  Next, an assembly procedure of the mount winding shaft 101 will be described with reference to FIG. First, the cam member 115 is placed in the U groove 114 of the base body 105, and the moving body 109 is mounted on the base body 105. The stud hole 126 formed in the moving body 109 is fitted into the stud 125 provided in the base body 105, and the fitting pin 129 formed in the other end surface 109b of the moving body 109 is fitted into the fitting hole 130 of the flange 107b. The moving body 109 can be attached to the base body 105 by fitting the engaging claw 127 formed on the one end surface 109 a of the moving body 109 into the engaging hole 128 of the wall body 110. When engaging the engagement claw 127 with the engagement hole 128, the engagement claw 127 is elastically deformed.

  In this state, the support shaft 104 is inserted from the connection hole 121 of the wall body 110 and inserted into the first insertion hole 116 of the cam member 115, and the support shaft 104 is advanced as it is to form a third insertion hole formed in the flange 107b. 120 is inserted. At this time, the other end side of the support shaft 104 is inserted into the second insertion hole 119 formed in the operation portion 107 a, and the operation portion 107 a is brought into contact with the wall body 110. At this time, the two large and small connecting protrusions 123 formed on the connecting boss 122 provided in the operation portion 107 a and the two large and small connecting recesses 124 formed at the end of the cam member 115 are fitted. Since the connection protrusion 123 and the connection recess 124 are brought into a fitted state only at a certain rotation angle, the rotation angle between the base body 105 and the operation unit 107a can be set correctly.

  In this state, both ends of the support shaft 104 protrude from the end portions of the operation portion 107a and the flange 107b, respectively. Therefore, the pair of shaft members 102 described above are fitted into this protruding portion. These shaft members 102 are oil-impregnated metal members. In this state, both ends of the support shaft 104 further protrude slightly from both ends of the shaft member 102. Then, at both ends of the support shaft 104, fitting grooves 145 for fitting the E-ring 144 are formed by cutting at the protruding portion. Therefore, the support shaft 104 is prevented from coming off by fitting the E-ring 144 into the fitting grooves 145.

  The clamper 108 is attached to the flange 107b before and after such assembling work. As described above, the clamper 108 is tightened by screwing the screw 137 from the screw insertion hole 136 into the screw hole 134 and tightening the positioning pin 133 in a state where the positioning pin 133 is fitted in the positioning hole 135 formed in the flange 107b. It is attached to 107b in a cantilever state.

  Thus, the assembly of the mount winding shaft 101 is completed (see FIG. 7).

  The procedure for mounting the mount 15 on the mount winding shaft 101 in such a configuration will be described with reference to FIG. FIG. 18 is a schematic diagram illustrating a state of each unit when the mount 15 is set on the mount winding shaft 101. First, the operation unit 107a is rotated to the second rotation position SP (see FIG. 14B). As a result, the rotation of the operation unit 107 a is transmitted to the cam member 115, the cam 118 rotates, and the cam surface 118 a of the cam 118 is not in contact with the moving body 109. In this state, the moving body 109 can come into contact with the base body 105, and the outer diameter of the mount winding portion 106 is reduced (see FIGS. 13B and 18). In addition, the body 139 to be captured of the clamper 108 is detached from the capturing unit 140 of the operation unit 107a. Therefore, the free end 108a of the clamper 108 is kept away from the mount winding portion 106 of the base 105, and the mount 15 is inserted into a gap between the base 105 and the clamper 108 generated thereby. The insertion direction is the direction indicated by the arrow in FIG. When the mount 15 is inserted, the clamper 108 is fitted into the recess 138 of the base 105, and the operation unit 107a is rotated to the first rotation position FP while maintaining this state (see FIG. 14A). Then, in the process in which the operation unit 107a is positioned at the first rotational position FP, the capturing unit 140 captures and holds the captured object 139 formed on the clamper 108. As a result, the clamper 108 is fitted in the recess 138 formed in the base body 105, and the mount 15 is clamped by the fitting shape between the end portion of the clamper 108 in the winding direction of the mount and the base body 105. Further, the rotation of the operation unit 107 a is transmitted to the cam member 115, so that the cam 118 rotates, the cam surface 118 a of the cam 118 abuts on the moving body 109, and the moving body 109 is moved from the rotation axis of the base body 105. It moves to the direction which leaves | separates (refer Fig.13 (a)). Thereby, the outer diameter of the mount winding portion 106 is increased (see FIGS. 13B and 18).

  Here, the clamping force of the mount 15 by the base body 105 and the clamper 108 can be set by the molding shape of the recess 138 and the clamper 108 formed in the base 127a. In this case, the clamping force can be changed at various locations upstream and downstream in the mounting direction of the mount 15. Therefore, as an example, by setting the clamping force to be strong at the most downstream side in the mounting direction of the mount 15 and to be weak at other regions, the base 105 and the clamper 108 The resistance applied to the mount 15 when the mount 15 is mounted in the gap between them can be weakened, and the mountability of the mount 15 can be improved.

  When the mount 15 is mounted on the mount winding shaft 101 in this way, the mount winding shaft 101 is mounted in a pair of U-shaped winding shaft holding grooves 26 formed on the winding shaft holder 25 (see FIG. 4). . At this time, along with the mounting operation, the shaft member 102 of the mount winding shaft 101 comes into contact with the upper inclined surfaces 32a of the pair of sandwiching pieces 32 constituting the shaft holding body 27, but by pressing the mount winding shaft 101 as it is. The pair of sandwiching pieces 32 are expanded, and the shaft member 102 can be attached to the shaft holding groove 26. The shaft member 102 after being mounted in the shaft holding groove 26 is retained by the lower inclined surfaces 32b of the pair of sandwiching pieces 32. In this state, the driven gear 103 of the mount winding shaft 101 meshes with the idler gear 28b of the gear train 28 (see FIG. 4). Accordingly, along with the printing operation of the label printer 1, power from a drive source (not shown) such as a motor is transmitted to the driven gear 103 of the mount winding shaft 101 via the gear train 28, and the mount 15 is transferred to the mount winding shaft 101. Rolled up.

  To remove the mount 15 taken up from the mount take-up shaft 101, the mount take-up shaft 101 is removed from the take-up shaft holder 25. To remove the mount winding shaft 101 from the winding shaft holder 25, it is only necessary to push up the mount winding shaft 101. By this operation, the shaft member 102 of the mount winding shaft 101 slides on the lower inclined surface 32b, and the pair of holding pieces 32 is expanded to allow the mount winding shaft 101 to be detached from the winding shaft holder 25.

  If the mount take-up shaft 101 is removed from the take-up shaft holder 25, the operation unit 107a is rotated to the second rotation position SP in the same manner as the work for setting the mount 15 on the mount take-up shaft 101. (See FIG. 14B). As a result, the rotation of the operation unit 107 a is transmitted to the cam member 115, the cam 118 rotates, and the cam surface 118 a of the cam 118 is not in contact with the moving body 109. In this state, the moving body 109 can come into contact with the base body 105, and the outer diameter of the mount winding portion 106 is reduced (see FIGS. 13B and 18). For this reason, the fastening force of the mount 15 to the mount winding portion 106 of the base 105 is weakened, and the mount 15 is easily detached from the base 105. Therefore, it becomes possible to remove the mount 15 from the mount take-up shaft 101 without requiring a strong force, and the workability for that is improved.

  As described above, according to the present embodiment, the mount 15 is clamped by the clamper 108 in a state where the moving body 109 is separated from the base 105, and the winding operation of the mount 15 is started. When removing the mount 15 wound around the take-up portion 106, the winding force of the mount 15 on the mount take-up portion 106 can be weakened by bringing the moving body 109 close to the base body 105, and therefore a strong force is required. The mount can be removed from the mount take-up shaft.

  In addition, since the operation unit 107a for performing an operation for causing the displacement of the moving body 109 is rotatably attached to one side of the base body 105, the structure is simplified and the entire size is reduced. Is obtained. In addition, since the operation unit 107a has a function of capturing and fixing the position of the free end 108a of the clamper 108, the structure can be simplified and the overall size can be further accelerated.

  Furthermore, since a sense of moderation is obtained when such an operation unit 107a is positioned at the first rotation position FP and the second rotation position SP, mistakes in operation are reduced, and operability is also improved.

1 is an overall perspective view showing an embodiment of the present invention. It is the side view which shows an internal structure virtually. It is a vertical side view which expands and shows a printing part, a peeling part, and a label issuing port. It is a perspective view which shows the mounting state of the mount winding shaft with respect to a winding shaft holder. It is a disassembled perspective view which shows the holding structure of the mount winding shaft in a winding shaft holder. It is a side view which shows the holding structure of the mount winding shaft in a winding shaft holder. It is a perspective view of a mount winding shaft. It is a disassembled perspective view of a mount winding shaft. It is a perspective view of a moving body. It is a top view of the edge part of a mobile body. It is a side view which shows the attachment structure of one edge part of the moving body with respect to a base | substrate. It is a side view which shows the attachment structure of another one edge part of the moving body with respect to a base | substrate. It is a schematic diagram which shows the operation state of a power transmission mechanism. It is a schematic diagram of the operation part positioned in the 1st rotation position and the 2nd rotation position, respectively. It is a schematic diagram which shows the positional relationship of the 1st protrusion formed in the moving body when the operation part is located in the 1st rotation position, and the 2nd protrusion formed in the groove part. It is a schematic diagram which shows the positional relationship of the 1st protrusion formed in the moving body when the operation part is located in the 2nd rotation position, and the 3rd protrusion formed in the groove part. It is a schematic diagram which shows the positional relationship of the to-be-captured object formed in the 4th protrusion part formed in the capture | acquisition part which the said operation part has when the operation part is located in the 1st rotation position, and a clamper. . It is a schematic diagram which shows the state of each part at the time of setting a mount with respect to a mount winding shaft.

Explanation of symbols

15 mount, 20 cam mechanism, 106 mount winding unit, 105 base, 107a operation unit, 107b flange, 108 clamper, 108a free end, 109 moving body, 109a one end surface, 118 cam, 118a cam surface, 131 first Protruding part, 132 groove part, 139 object to be captured, 140 capturing part, 141 second projecting part, 142 third projecting part, 143 fourth projecting part, FP first rotating position, SP second rotating position

Claims (4)

A substrate on which a mount is wound by rotating with a rotational driving force applied thereto;
A flange that is disposed on the side of the base and guides the mount to be wound and held;
A clamper that clamps the mount between the base body;
A moving body that is held so as to be able to approach and separate from the rotation axis of the base body;
An operation unit that is disposed at a position other than the mount wrapping region of the base so as to be displaceable within a predetermined range;
A power transmission mechanism that converts the displacement of the operation portion into movement in the approaching / separating direction of the moving body with respect to the rotation axis of the base;
With
The operation portion is located on a side opposite to the side where the flange is disposed, and is between the first rotation position and the second rotation position about an axis parallel to the rotation axis of the base. Can be pivoted,
The power transmission mechanism has a cam surface on the outer peripheral surface that rotates with the rotation of the operation portion and varies in distance from the rotation shaft of the base according to the rotation position, and the cam surface is It is formed by a cam that contacts the back surface of the moving body, and the moving body is positioned at a position away from the rotation axis of the base body in a state where the operation portion is positioned at the first rotation position. In a state where the operation unit is positioned at the second rotation position , the movable body is positioned at a position where the movable body can approach the rotation axis of the base body,
The moving body includes a first protrusion that protrudes until one end surface thereof extends to the position of the operation portion and interferes with the operation portion at the extended portion.
The operation unit is
A groove formed in the operation portion in a shape that avoids interference with the protrusion that moves due to the movement of the movable body accompanying the rotation of the operation portion;
A second protrusion that protrudes into the groove and moves over the first protrusion in contact with the first rotation position immediately before the operation portion is rotated and positioned at the first rotation position;
A third protrusion that protrudes into the groove and moves over while contacting the first protrusion at a position immediately before the operation portion is rotated and positioned at the second rotation position;
Comprising
Mount winding shaft. One end of the clamper is held by the flange,
The operation unit holds a free end of the clamper with an operation of rotating from the second rotation position to the first rotation position.
The mount winding shaft according to claim 1. A substrate on which a mount is wound by rotating with a rotational driving force applied thereto;
A flange that is disposed on the side of the base and guides the mount to be wound and held;
A clamper that clamps the mount between the base body;
A moving body that is held so as to be able to approach and separate from the rotation axis of the base body;
An operation unit that is disposed at a position other than the mount wrapping region of the base so as to be displaceable within a predetermined range;
A power transmission mechanism that converts the displacement of the operation portion into movement in the approaching / separating direction of the moving body with respect to the rotation axis of the base;
With
The operation portion is located on a side opposite to the side where the flange is disposed, and is between the first rotation position and the second rotation position about an axis parallel to the rotation axis of the base. Can be pivoted,
The power transmission mechanism has a cam surface on the outer peripheral surface that rotates with the rotation of the operation portion and varies in distance from the rotation shaft of the base according to the rotation position, and the cam surface is It is formed by a cam that contacts the back surface of the moving body, and the moving body is positioned at a position away from the rotation axis of the base body in a state where the operation portion is positioned at the first rotation position. In a state where the operation unit is positioned at the second rotation position , the movable body is positioned at a position where the movable body can approach the rotation axis of the base body,
One end of the clamper is held by the flange,
The operation unit holds a free end of the clamper with an operation of rotating from the second rotation position to the first rotation position.
Mount winding shaft. The clamper has a protruding object to be captured at its free end,
The operation unit includes a capturing unit that captures and fixes the captured object in accordance with an operation of rotating the clamper from the second rotational position to the first rotational position.
The capturing part includes a fourth protrusion that climbs over the object to be captured while abutting the captured object in accordance with the rotation operation of the clamper to the first rotational position.
The mount winding shaft according to claim 2 or 3.

Images