JP5471424B2 - Belt winding mechanism - Google Patents

Description

  The present invention relates to a belt-like body winding mechanism for winding a belt-like body such as a label roll mount or an ink ribbon.

  Conventionally, as a label printer mount winding mechanism using a label roll in which a label sheet is peeled temporarily attached to a mount and the mount is wound into a roll, the mount is mounted on a cylindrical winding core (winding shaft). The thing which provided the pinch board which pinches | interposes, or the thing which provided the groove | channel which inserts a base_sheet | mounting_paper is known (for example, refer patent document 1).

However, since the conventional mount winding device is wound directly around the outer peripheral surface of the winding core (winding shaft), the tightening force for tightening the winding core (winding shaft) increases as the winding increases. . Thereby, when removing the mount wound around the take-up core when replacing the label roll, the mount is strongly wound around the take-up core, so that it is difficult to remove the mount that has been wound up from the take-up core. Have a problem.
Further, when the structure is such that the diameter of the take-up core is reduced and enlarged by the operation lever that rotates, and the mount is fixed or the mount is released, the mount of the mount accompanying the rotation operation of the operation lever The operation lever may be positioned at a halfway position which is neither the fixing position nor the position where the mount is released, and there is a possibility that the mount cannot be fixed firmly.
Further, when checking the position where the mount is fixed and the position where the mount is released with the operation lever that performs the rotation operation, the operator visually checks and determines the direction and position of the operation lever. It is difficult to distinguish the direction or position of the operation lever when it is at the fixed position of the mount from the direction or position of the operation lever when it is at the position where the mount is released. There was a possibility that it would be mistaken for what. Also, the amount of operation to turn the operation lever is large, and the operation to turn the operator is troublesome.

Also, when the end of the mount is set in the sandwich plate or groove and the label issuance work is performed, the mount that should have been set and fixed is removed from the sandwich plate or groove, and only the take-up core is idled and the mount is removed. There is a problem that a phenomenon that the sheet cannot be wound occurs, and as a result, a defect such as defective printing occurs.
The phenomenon that the mount is detached is that the end of the mount is only inserted into a sandwich plate or groove provided on the outer peripheral surface of the winding core, and the end of the mount is not attached to the winding core. It seems to be because. That is, when the winding core is rotated in the direction of winding the mount, the end of the mount is detached from the gap or groove of the sandwiching plate by the rotation of the winding core, and only the winding core is rotated.

  As a method for preventing the end of the mount from being removed from the sandwiching plate or groove of the winding core, for example, the end of the mount may be bent and hooked to the side edge of the sandwiching plate or the edge of the groove. The hooking of the mount is temporary, and the surface of the mount is coated with a release material to make it easier to peel off the label. It is difficult to hook and hold the end of the mount until the mount is tightly wrapped around the core. In addition, there is an inconvenience that it is troublesome to bend the end portion of the backing sheet every time the label roll is replaced and hook it on the sandwiching plate or the groove.

JP 63-165257 A (FIG. 9)

  The present invention has been made in view of the above-described problems of the prior art, and it is possible to perform fixing of the belt-like body with respect to the winding shaft and removal of the belt-like body wound around the winding shaft with a simple operation. The object is to provide a belt-like body winding mechanism.

In order to achieve the above object, a belt-like body winding mechanism of the present invention includes a winding shaft cylinder driven and rotated by a motor or the like, and a circumferential wall disposed in the shaft cylinder along the circumferential direction. A winding diameter forming plate that protrudes and protrudes through an opening formed in the inner surface, an operating shaft that is arranged inside the plurality of winding diameter forming plates so as to be movable in an axial direction of the winding shaft cylinder, and the operating shaft A pusher that slides in the axial direction, and a rotary engagement cylinder that transmits the movement of the pusher to the operating shaft. The operating shaft has a small diameter portion and a large diameter portion formed along the axial direction. When the child is operated, the corresponding surfaces of the rotary engagement cylinder and the pusher are engaged with each other, the operation shaft is slid in the axial direction, and the winding diameter forming plate is wound around the large diameter portion of the operation shaft. When projecting outward from the outer peripheral surface of the spindle cylinder and operating the pusher again, the rotating engagement cylinder rotates in the circumferential direction by a predetermined angle. The engagement of a child, the actuating shaft is the winding diameter forming plate slides in the axial direction corresponds to the small diameter portion, characterized by retracted into the barrel (Claim 1).
As a method for fixing the end of the belt-like body to the winding shaft cylinder, any of a conventionally known pinch plate method or groove method may be used.
Since the winding diameter forming plate defines an inner diameter for winding the belt-like body, a large number of the winding diameter forming plates are arranged on the circumference of the winding shaft cylinder in order to make the inner diameter a shape close to a circle. It is good, but four is preferable depending on the relationship with the internal space. One may be sufficient.

According to the above means, when the pusher is pushed, the plurality of winding diameter forming plates accommodated in the winding shaft cylinder change in the shaft diameter (small diameter) by sliding in the axial direction of the operating shaft. Projecting from the opening formed in the peripheral wall of the winding shaft cylinder to the outside of the shaft cylinder. Thereby, the outer diameter around which the belt-like body is wound is formed by the winding diameter forming plate that protrudes radially outward from the outer peripheral surface of the winding shaft cylinder. And when removing the strip | belt-shaped body wound up on the said winding diameter formation board, if the said pusher (presser of the state pushed in) is pushed again, the said winding diameter formation board will be the axial direction of the said operating shaft. Due to the change of the shaft diameter (from the large diameter portion to the small diameter portion) due to sliding (reciprocating), the shaft is inserted into the shaft tube through the opening formed in the peripheral wall of the winding shaft tube. As a result, there is no winding diameter forming plate that forms the winding diameter of the belt-like body, so that a gap is formed between the inner diameter of the wound belt-like body and the outer peripheral surface of the winding shaft cylinder, and winding is performed. The strip can be easily removed without receiving frictional resistance with the outer peripheral surface of the winding shaft cylinder.
In addition, the pusher for retracting and retracting the winding diameter forming plate maintains the pushed-in state and the pushed-out state. By visually confirming the state of the pusher, the wound state and the detached (released) state Can be determined.

The winding diameter forming plate may be a single plate. For example, the winding diameter forming plate has a pair of projecting pieces facing each other at a predetermined interval, and the winding shaft cylinder is disposed between the pair of projecting pieces. A strip-like member sandwiching piece is formed integrally and projecting from the base end side of the winding shaft cylinder at a predetermined distance from the outer peripheral surface, and the protruding amount of the winding diameter forming plate from the outer peripheral surface of the winding shaft cylinder is It is good also as a quantity located above the surface of a strip | belt-shaped body clamping piece (Claim 2).
The belt-like body sandwiching piece may be provided on all the winding diameter forming plates arranged on the winding shaft cylinder, or may be provided on some winding diameter forming plates.

According to the above means, when the end of the belt-like body is inserted into the gap between the outer peripheral surface of the winding shaft cylinder and the belt-like body sandwiching piece and then the pusher is pushed, a pair of the belt-like body sandwiching pieces is sandwiched. The winding diameter forming plate provided with the projecting piece penetrates the peripheral wall of the winding shaft cylinder by the above-described operation and protrudes outside the shaft cylinder, and the belt-like body inserted along the outer peripheral surface of the winding shaft cylinder is The portions projecting on both sides from the band-shaped body sandwiching piece are bent upward by the pair of projecting pieces of the winding diameter forming plate. Thereby, the belt-like body is sandwiched between a pair of projecting pieces of the belt-like body sandwiching piece and the winding diameter forming plate, and the end of the belt-like body is fixed, and at the same time, the winding shaft is taken up by the winding diameter forming plate. A winding inner diameter larger than the outer diameter of the cylinder is formed.
Moreover, if the pusher is pushed after the winding is completed, the winding diameter forming plate is immersed in the winding shaft cylinder as described above, so that the bending and fixing of the end of the belt-like body is also released and the winding is performed. The belt-like body can be easily removed from the winding shaft cylinder.

  Further, four winding diameter forming plates are arranged at equal intervals around the winding shaft cylinder (Claim 3).

  According to the above means, since the winding diameter forming plate is arranged in a substantially cross shape on the peripheral surface of the winding shaft cylinder, the four winding diameter forming plates are arranged outward from the peripheral surface of the winding shaft cylinder. When projecting, the contour formed by connecting the tips of the forming plates is concentric with the winding shaft cylinder. Accordingly, the belt-like body wound on the winding diameter forming plate is substantially cylindrical, and stable rotation of the winding shaft cylinder is ensured.

  Further, the small diameter portion and the large diameter portion of the operating shaft are connected by a taper portion whose diameter changes from the large diameter portion toward the small diameter portion in the sliding direction by the pushing of the pusher, and the winding diameter formation The plate is urged by an elastic machine in a direction in pressure contact with the peripheral surface of the operating shaft.

  According to the above means, the take-up diameter forming plate is pressed against the peripheral surface of the operating shaft by an elastic machine, and the small diameter portion and the large diameter portion of the operating shaft are connected by the taper portion. The winding diameter forming plate is reliably moved in the radially outward direction and the radially inward direction by the sliding of the operating shaft by the movement. Therefore, it is possible to reliably switch the operation (fixing and releasing the belt-like body) by the pushing operation of the pusher.

The winding mechanism of the belt-like body of the present invention has the structure according to claim 1, and when winding the belt-like body, pushes the pusher to project the winding diameter forming plate from the outer peripheral surface of the winding shaft cylinder, When the belt-shaped body is wound on the winding diameter forming plate, the belt-shaped body is wound, and then the pusher is pushed again, the winding diameter forming plate is immersed in the winding shaft cylinder, and the wound strip-shaped body is wound. A gap is formed between the inner diameter of the body and the outer peripheral surface of the winding shaft cylinder. Thereby, the strip | belt-shaped body wound up can be removed easily without resistance. And the pusher for retracting the take-up diameter forming plate keeps the pushed-in state and the pushed-out state, so that the state of the pusher is visually checked, so that the take-up state and the detached (released) state Can be determined.
Further, according to the configuration of claim 2, the belt-like body is sandwiched between a pair of projecting pieces of the belt-like body sandwiching piece and the winding diameter forming plate to fix the end of the belt-like body, and at the same time, the winding diameter forming plate As a result, a winding inner diameter larger than the outer diameter of the winding shaft cylinder is formed. Therefore, the end of the belt-like body can be fixed and released easily by the operation of the pusher. As a result, the pusher does not stop at a halfway position, and the pusher has only two positions, a position for firmly fixing the belt and a position for releasing the belt. The band is not fixed. Further, the operator can easily visually check the state of the belt-like band, and the operator does not mistake the fixed state and the released state of the belt-like band.

Further, according to the configuration of the third aspect, the winding diameter of the belt-like body is concentric with the axial center of the winding shaft cylinder being substantially the center, so that the rotation of the winding shaft cylinder is stable and uniform winding is possible. It becomes.
Further, according to the configuration of the fourth aspect, it is possible to reliably switch the operation (fixing and releasing the belt-like body) by the pushing operation of the pusher.

1 is an external perspective view showing an example of a label printer including a belt-like body winding mechanism according to the present invention. (A) is the external appearance perspective view of the winding state which pushed the pusher, (b) is the external perspective view which released the winding state by pushing the pusher. (A) is a front view of a winding state, (b) is a longitudinal side view of the same. (A) is the front view which released the winding-up state, (b) is the longitudinal cross-sectional side view. FIG. (A) is sectional drawing which shows the state which inserted the strip | belt-shaped body in the clearance gap between the outer peripheral surface of a winding axial cylinder, and a strip | belt-shaped body pinching piece, (b) is winding up by pushing a pusher after inserting a strip | belt-shaped body. The same sectional view which shows the state which made the diameter formation board protrude outward through the opening part of a shaft cylinder. The cap attached to the edge part of a winding axial cylinder is shown, (a) is an external appearance perspective view, (b) is an expanded view which shows the uneven groove | channel formed in the inner surface of the cap.

The strip winding mechanism according to the present invention includes a label printer (a label printer that uses a label roll in which predetermined items are previously printed on a label sheet, and the label sheet is temporarily attached to a long strip (mount). , Including label printers that are temporarily attached to long strips of paper (bands) and label rolls are used to print on label papers at the printing section), automatic packaging price machines, labeling devices, etc. It is used to wind up a backing sheet (band-like body) after label peeling of a label roll to be used or an ink ribbon tape (band-like body) used for a printing portion.
The winding mechanism winds up the belt-like body with a large winding diameter separated from the outer peripheral surface of the winding shaft cylinder, and after winding, the winding shaft is wound with the winding shaft cylinder by a large winding inner diameter. It is designed so that it can be easily removed with reduced contact resistance, and the large diameter winding diameter is formed and the winding diameter is reduced (released) by pushing the pusher. is there.

Hereinafter, an example of an embodiment of a belt winding mechanism according to the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view showing a label printer A equipped with a main winding mechanism. An operation unit 1 for inputting data such as the number of each product and a display unit 2 for displaying required data of the product are provided at the upper front of the printer main body. Is mounted on the printer, and the data of the corresponding product is called by inputting the product number by the operation unit 1 and is mounted by a transport mechanism (not shown) from the label roll 3 set inside the printer main body (band-like body). 4 is printed on a label 5, and the printed label is issued from a label issuing port 6 provided below the operation unit.

Inside the printer main body, a label roll holding shaft 7 is attached in a cantilever manner with one end fixed to the inner wall of the printer main body and the other end protruding toward the opening / closing door 8 of the printer main body. A roll presser plate 9 is detachably fitted to the label roll holding shaft 7 so that the label roll 3 mounted on the label roll holding shaft 7 so as to be freely rotatable by the roll presser plate 9 does not wobble. is there. In the figure, B is a weighing scale which is electrically connected to the label printer and can send weighing data to the label printer.
The mount (band-like body) 4 after the label 5 is peeled off is wound around the mount winding shaft 10.

Hereinafter, the details of the mount winding shaft 10 will be described with reference to FIGS.
In FIG. 2, the mount winding shaft (winding shaft cylinder) 10 is formed in a cylindrical shape by a synthetic resin material, and a planar portion of the substrate 11 intersects the shaft core at a right angle at one end in the axial direction of the cylindrical body. Let it be fixed. The substrate 11 is an attachment member for attaching the mount winding shaft 10 to the rotating body. When the substrate 11 is attached to the rotating body, the mount winding shaft 10 rotates, and the mount 4 is mounted on the mount winding shaft 10. It is designed to be wound up.
A winding diameter forming plate 12 that winds the mount away from the outer peripheral surface of the mount winding shaft 10 is disposed inside the mount winding shaft 10, and the winding diameter forming plate 12 is mounted on the mount winding shaft 10. A state in which the pusher 13 disposed at the open end of the shaft 10 protrudes radially outward from the outer peripheral surface of the mount winding shaft 10 (see FIG. 2A), and the inside of the mount winding shaft 10 The state is switched to a state of being immersed (see FIG. 2B).
Further, the mount pinching piece 14 has a predetermined length from the substrate 11 along the axis of the mount take-up shaft 10 at a predetermined interval (a gap enough to insert the mount 4) with the outer peripheral surface of the mount take-up shaft 10. (Length corresponding to the width of the mount 4) is formed to protrude.

  Inside the mount winding shaft 10, a guide rod 15 is erected on the substrate 11 so as to be positioned on the axial center line, and a small diameter portion and a large diameter portion are formed on the outer periphery of the guide rod 15. A shaft 16 is slidably fitted, and a winding diameter forming plate 12 is arranged radially (cross shape in the illustrated example) between the outer peripheral surface of the operating shaft 16 and the peripheral wall of the mount winding shaft 10. Further, on the axis of the operating shaft 16, a pusher 13 that slides the operating shaft 16 along the guide rod 15, and a rotary engagement that transmits the amount of movement of the pusher 13 to the operating shaft 16. A cylinder 17, a coil spring 19 that urges the operating shaft 16 in a direction opposite to the pushing direction of the pusher 13, and a leaf spring that urges the winding diameter forming plate 12 toward the outer peripheral surface of the operating shaft 16 ( ) 20 is accommodated, and a cap 18 is fitted and attached to the open end of the mount winding shaft.

  Further, an opening portion 21 through which the winding diameter forming plate 12 housed and disposed therein protrudes / immerses through the peripheral wall of the mount winding shaft 10 is provided on the peripheral wall of the mount winding shaft 10. It is formed corresponding to the arrangement position of the forming plate 12.

The winding diameter forming plate 12 is formed of a synthetic resin material into a frame shape having a substantially U-shaped cross section having a pair of projecting pieces 12a and 12a ′ and a length substantially the same as the length of the mount sheet sandwiching piece 14, Receiving portions 12c and 12c ′ that contact the outer peripheral surface of the operating shaft are formed on the lower surface of the connecting piece 12b that connects the protruding pieces 12a and 12a ′ so as to protrude at a predetermined interval in the longitudinal direction.
The distance between the pair of projecting pieces 12a and 12a ′ is wider than the width (width along the circumferential direction) of the mount sandwiching piece 14, and protrudes outward through the opening 21 of the mount winding shaft 10. At this time, it is formed so as to be in a state of sandwiching the mount clip piece 14.
Further, a leaf spring 20 that urges the winding diameter forming plate 12 in a direction to come into contact with an outer peripheral surface of an operating shaft 16 to be described later is engaged with the upper surface of the connecting piece 12b.

  The leaf spring 20 is bent at both sides in the longitudinal direction upward, and a substantially central portion between the bent portions on both sides is engaged with the connecting piece 12b of the winding diameter forming plate 12, so that both sides are bent. When the portion abuts against the inner surface of the peripheral wall of the mount winding shaft 10, an urging force is generated on the winding diameter forming plate 12 inwardly (in a direction contacting the outer peripheral surface of the operating shaft).

The operating shaft 16 for moving the winding diameter forming plate 12 in and out is a hollow shaft having a circular cross section having a hole 16a that can be fitted in the guide rod 15 along the axis, and an outer peripheral surface of the shaft, that is, a small diameter. Two large-diameter portions 16d are formed in the portion 16b at predetermined intervals in the axial direction through conical tapered portions 16c.
The formation interval of the large diameter portion 16d is the interval between the two receiving portions 12c and 12c ′ formed on the lower surface of the connecting piece 12b of the winding diameter forming plate 12, and the tapered portion 16c and the small diameter portion 16b. Also, the position of the boundary part is set to the same interval as the interval between the receiving parts 12c and 12c ′. Accordingly, the two receiving portions 12c and 12c ′ of the winding diameter forming plate 12 correspond to the small diameter portion 16b and the large diameter portion 16d by sliding of the operation shaft 16, and are configured to surely translate. ing.
The taper portion 16c is oriented so that the distal end side along the sliding direction of the operating shaft 16 is the small diameter portion 16b, and the corresponding position of the receiving portions 12c and 12c ′ of the winding diameter forming plate 12 by sliding is the small diameter portion. 16b → tapered portion 16c → large diameter portion 16d.
The operating shaft 16 is fitted to the guide rod 15 after the coil spring 19 is mounted, and a biasing force in a direction to push the shaft back is applied to the operating shaft 16.

  The pusher 13 for sliding the operating shaft 16 is formed in a cap cylinder shape by a synthetic resin material, and the open end portion of the mount winding shaft 10 is closed on the outer peripheral surface of the cylindrical portion on the open end side. A protrusion 13a that fits into a guide groove formed on the inner peripheral surface of the inner cylinder 18b of the cap 18 is formed at a position that divides the circumferential direction into four equal parts, and further, the opening end surface of the cylinder part has a mountain shape along the circumferential direction. An engagement surface 13 b is formed, and the engagement surface 13 b is engaged with and disengaged from the rotary engagement cylinder 17 interposed between the pusher 13 and the operation shaft 16.

The rotating engagement cylinder 17 that transmits the amount of movement of the pusher 13 to the operating shaft 16 is formed in a stepped cylindrical shape that can be fitted to the distal end small diameter portion 16b of the operating shaft 16 by a synthetic resin material. On the outer peripheral surface of the cylindrical portion 17a, a ridge 17c is formed at a location that divides the circumferential direction into four equal parts. Further, on the open end surface of the large-diameter cylindrical portion 17a, a mountain that engages with the engaging surface 13b of the pusher 13. A tooth portion 17d having a shape is formed.
The small-diameter cylindrical portion 17b of the rotary engaging cylinder 17 has an outer diameter that fits into the cylinder of the pusher 13, and the large-diameter cylindrical portion is set by fitting the pusher 13 to the small-diameter cylindrical portion 17b. The tooth part 17d of 17a and the engaging surface 13b of the pusher 13 are made to oppose each other.

The cap 18 closes the open end of the mount winding shaft 10, restricts the movement (rotation) of the pusher 13 in the circumferential direction, and moves the rotation engagement cylinder 17 in the axial direction. It controls the movement in the circumferential direction, and is formed in a double cylinder shape by a synthetic resin material. The outer cylinder 18a is formed with a locking portion 24 fitted and engaged with the open end of the mount winding shaft 10. Has been. Further, as shown in FIG. 7, guide grooves 22 are formed on the inner peripheral surface of the inner cylinder 18b in parallel with the axis at positions that divide the circumference into four equal parts. An engagement step portion 23 is formed in which the tooth portion 17d of the rotary engagement cylinder 17 is engaged and engaged.
That is, in a state where the protrusion 17c of the rotary engagement cylinder 17 is fitted in the guide groove 22, the tooth portion 17d of the rotation engagement cylinder 17 and the engagement surface 13b of the presser 13 are engaged with each other. When the rotation engagement cylinder 17 is moved to the opening side of the cap 18 by the pushing of the swaying force and the protrusion 17c moves to a position where it is disengaged from the opening end of the guide groove 22, the urging force acting via the operating shaft 16 is applied. The rotary engagement cylinder 17 is rotated in the circumferential direction, the tooth portion 17d is engaged with the engagement step portion 23, and the operating shaft 16 is stopped and held at the sliding position.
With the above configuration, the presser 13 does not stop at a halfway position due to the coil spring 19 and the mountain-shaped tooth portion 17d of the rotation engagement cylinder 17 that engages with the engagement surface 13b of the presser 13, Since the pusher 13 has only two positions, a position where the mount 4 is firmly fixed and a position where the mount 4 is released, it does not stop at a halfway position.

Next, the operation of the winding mechanism described above will be described.
First, when the mount 4 is wound around the mount take-up shaft 10, it is necessary to fix the end of the mount 4 to the mount take-up shaft 10. Therefore, as shown in FIG. 6A, the end portion of the mount 4 in a state in which the winding diameter forming plate 12 is immersed in the mount winding shaft 10 (see FIGS. 4A and 4B). Is inserted into the gap between the outer peripheral surface of the mount winding shaft 10 and the mount sandwiching piece 14. In this case, the mount 4 is inserted so as to cross the mount sandwiching piece 14.
Next, the pusher 13 is pushed from the state of FIG. 4, and the pair of projecting pieces 12 a and 12 a ′ of the winding diameter forming plate 12 housed and arranged inside the mount winding shaft 10 is mounted through the opening 21. It protrudes outward from the outer peripheral surface of the winding shaft 10 (see FIG. 4B). Due to the protrusion of the winding diameter forming plate 12, the mount 4 that protrudes in the width direction of the mount sandwiching piece 14 is on the outer side separated from the outer peripheral surface of the mount winding shaft 10 by the protruding pieces 12a and 12a ′ (in FIG. 4B). The mount 4 is pushed up and held in a meandering state by the winding diameter forming plate 12 and the mount sandwiching piece 14, and the fixing of the mount 4 is established.

Hereinafter, an operation until the winding diameter forming plate 12 protrudes from the peripheral wall of the mount winding shaft 10 by the pushing of the pusher 13 will be described.
As shown in FIG. 4, the pusher 13 is moved to the coil spring 19 under the state where the pusher 13 protrudes outward (the winding diameter forming plate 12 is immersed in the mount winding shaft 10). When the actuator 16 is pushed in the axial direction against the elastic force, the actuating shaft 16 is moved along the guide rod 15 via the rotary engaging cylinder 17 engaged with the pusher 13 and is on the side of the substrate 11 of the mount winding shaft 10. Moved to. Due to the movement of the operating shaft 16, the four winding diameter forming plates 12 that are in pressure contact with the small diameter portion 16 b of the shaft 16 come into contact with the receiving portion 12 c of the winding diameter forming plate 12 by the movement of the operating shaft 16. The location changes from small diameter portion 16b → tapered portion 16c → large diameter portion 16d, and accordingly the winding diameter forming plate 12 is pushed radially outward while pressing the leaf spring 20, and finally the mount winding shaft 10 Is projected outward from the outer peripheral surface of the mount winding shaft 10 through the opening 21.
Then, the protruding state of the winding diameter forming plate 12 is such that the tooth portion 17d of the rotary engagement cylinder 17 moved by the pusher 13 is engaged with the engagement step portion 23 of the cap 18, thereby operating. Since the movement of the shaft 16 is stopped, the protruding state of the winding diameter forming plate 12 is maintained (see FIGS. 3A and 3B).

When the mount winding shaft 10 is driven and rotated with the winding diameter forming plate 12 protruding, the mount 4 is wound on the winding diameter forming plate 12 protruding on the circumference. Thereby, the winding diameter of the mount 4 to be wound becomes larger than the outer diameter of the mount winding shaft 10. Further, the winding diameter forming plate 12 is arranged at equal intervals that divide the circumference into four equal parts, so that the board to be wound is wound evenly and substantially concentrically with the mount winding shaft 10. Therefore, the mount winding shaft 10 is maintained in a stable rotation.
Further, in the state where the mount 4 is wound up, the pusher 13 is in the pushed-in state, so that the current situation can be determined from the position of the pusher 13.

  Next, when the winding of the mount 4 is completed and the wound mount 4 is removed from the mount winding shaft 10, the pusher 13 is pushed in as shown in FIG. When the pusher 13 is pushed in the axial direction against the elastic force of the coil spring 19 from this state, the tooth portion 17d of the rotary engagement cylinder 17 that is press-engaged with the engagement step portion 23 of the cap 18 is engaged. Further, the engagement with the engagement surface 13b of the pusher 13 is released and the circumferential direction is turned away from the step portion 23, and the protrusion 17c is aligned with the guide groove 22. As a result, the rotating engagement cylinder 17 that is urged to the front side in the axial direction via the operating shaft 16 (rightward in FIG. 3B) has the protrusion 17c fitted into the guide groove 22 and the cap 18 side. Moved to. Then, the pusher 13 is also moved together by the movement of the rotary engagement cylinder 17, and the pusher 13 is returned to the protruding state (see FIG. 4B).

The operation shaft 16 is also moved by the movement of the rotary engagement cylinder 17, and the movement is a position where the end surface of the large diameter portion 16 d located closer to the movement direction of the operation shaft 16 contacts the end surface of the inner cylinder 18 b of the cap 18. Moved to. The position where the receiving portion 12c of the winding diameter forming plate 12 abuts due to the movement of the operating shaft 16 changes from the large diameter portion 16d → taper portion 16c → small diameter portion 16b, and accordingly the winding diameter forming plate 12 is a leaf spring. It is urged inward by the mount take-up shaft 10 with a resilience of 20 and is immersed in the mount take-up shaft 10.
By the immersion of the winding diameter forming plate 12, the meandering bending of the end portion of the mount 4 is released, and the fixed state with the mount winding shaft 10 is released. Further, since the take-up diameter forming plate 12 supporting the inner diameter of the wound mount 4 is immersed in the mount take-up shaft 10 as described above, the inner diameter of the roll-mounted mount 4 and the mount take-up shaft 10 There is a gap between the outer peripheral surface of As a result, the mount on which the end of the mount 4 is fixed can be easily removed by pulling it out in the axial direction of the mount winding shaft 10.

  As described above, the winding mechanism of the present invention can fix the mount to the mount take-up shaft by simply sandwiching the end of the mount between the mount take-up shaft and the mount sandwich plate and pushing the pusher. In addition, the mount can be wound in a state of being floated from the outer peripheral surface of the mount winding shaft. In addition, the take-out after winding is performed by releasing the fixing of the end of the mount by pushing the pusher, and the winding diameter forming plate that regulates the inner diameter of the winding is immersed in the mount winding shaft. Thus, there is nothing in contact with the inner diameter of the wound roll of the mount, and therefore the mount roll can be easily pulled out and removed without frictional resistance.

The winding mechanism for the belt-like body according to the present invention is not limited to the illustrated embodiment, and can be appropriately changed without changing the gist of the present invention.
(1) Although an example in which four winding diameter forming plates are arranged has been described in the embodiment, the present invention is not limited thereto, and may be, for example, three or five or more.
(2) In the embodiment, the mount pinch plates are arranged in two of the four take-up diameter forming plates. However, the present invention is not limited to this, and the mount pinch plates are arranged at all the take-up diameter forming plates. May be arranged.
(3) In the embodiment, an example of winding the mount has been described. However, the present invention is not limited to this. For example, the mount can be used for a device that winds an ink ribbon (tape) after printing.

4 ... Mount (band) 10 ... Mount winding shaft (winding shaft)
DESCRIPTION OF SYMBOLS 12 ... Winding diameter formation board 12a, 12a '... Projection piece 13 ... Pusher 14 ... Mounter pinch board 16 ... Actuation shaft 16b ... Small diameter part 16c ... Tapered part 16d ... Large diameter part 17 ... Rotating engagement cylinder 18 ... Cap 19 ... coil spring 20 ... leaf spring (bullet)
21 ... Opening

Claims (4)

A winding shaft that is driven and rotated by a motor or the like;
A winding diameter forming plate which is arranged along the circumferential direction in the shaft cylinder and protrudes and retracts through an opening formed in a peripheral wall of the winding shaft cylinder;
An operating shaft disposed inside the plurality of winding diameter forming plates so as to be movable in the axial direction of the winding shaft cylinder;
A pusher that slides in the axial direction of the operating shaft, and a rotary engagement cylinder that transmits the movement of the pusher to the operating shaft;
The operating shaft is formed with a small diameter portion and a large diameter portion along the axial direction,
When the pusher is operated, the corresponding surfaces of the rotary engagement cylinder and the pusher are engaged with each other, the operation shaft is slid in the axial direction, and the winding diameter forming plate is formed at the large diameter portion of the operation shaft. Project outward from the outer peripheral surface of the winding shaft cylinder,
When the pusher is operated again, the rotation engagement cylinder rotates in the circumferential direction by a predetermined angle to disengage from the pusher, the operating shaft slides in the axial direction, and the winding diameter forming plate has a small diameter. A winding mechanism for a belt-shaped body corresponding to the portion and immersing in the shaft cylinder.   The winding diameter forming plate has a pair of protrusions facing each other at a predetermined interval, and a band-shaped body is sandwiched between the pair of protrusions and the outer peripheral surface of the winding shaft cylinder at a predetermined interval. The piece is integrally formed to protrude from the base end side of the winding shaft cylinder, and the protruding amount of the winding diameter forming plate from the outer peripheral surface of the winding shaft cylinder is located above the surface of the strip-shaped member sandwiching piece. The winding mechanism for a belt-like body according to claim 1.   4. The belt-shaped body winding mechanism according to claim 1, wherein four winding diameter forming plates are arranged at intervals around the winding shaft cylinder.   The winding diameter forming plate is urged by an elastic machine in a direction to be immersed in the winding shaft cylinder, and is pressed against the peripheral surface of the operating shaft. A winding mechanism for the belt-shaped body according to the item.

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