JP2006036515A - Rolled paper supporting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rolled paper supporting device capable of maintaining an interval between a pair of guide plates adjusted in accordance with size of a rolled paper and improving work efficiency when replacing a rolled paper without providing a complicated mechanism. <P>SOLUTION: Through holes having circumferential channels screw-fitted into a left side spiral channel and a right side spiral channel formed in a shaft part 6, respectively, are formed in a left side guide part 4 and a right side guide part 5, respectively. The left side guide part 4 and the right side guide part 5 move in the axial direction of a rolled paper 1 supported in a supporting part 3 and move in the opposite direction by the same travel amount in the interlocking relationship in accordance with rotation of the shaft part 6. This rolled paper supporting device serves also as a traveling mechanism for moving the left side guide part 4 and the right side guide part 5 in the axial direction of the rolled paper 1 supported in the supporting part 6 and a fixing mechanism for fixing the left side guide part 4 and the right side guide part 5. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a roll paper support device for supporting a roll paper such as a label or a seal temporarily attached to a recording paper wound in a roll shape or a belt-like base paper wound in a roll shape used in a printer or a facsimile machine. In particular, the present invention relates to a roll paper support device that performs axial positioning of roll paper supported using a guide plate.

  In printers and facsimiles that print on roll paper such as labels and stickers that are temporarily attached to recording paper wound in rolls or strips mounted in rolls, the axial direction of the supported roll paper It is necessary to perform positioning. The roll paper is generally positioned in the axial direction by a guide plate that guides the side of the supported roll paper. In a center-distributed printer or facsimile, a pair of guide plates are supported by a rack and pinion structure. The roll paper is slid in the axial direction of the roll paper, and the distance between the pair of guide plates is adjusted according to the size of the roll paper, and the distance between the pair of guide plates adjusted according to the size of the roll paper is maintained. Therefore, a lock mechanism for fixing the guide plate is provided (see, for example, Patent Document 1).

However, in the prior art, in order to maintain the distance between the pair of guide plates adjusted according to the size of the roll paper, it is necessary to provide a complicated mechanism called a lock mechanism for fixing the guide plates, and roll paper of different sizes. In the case of mounting the roll paper, it is necessary to release the lock mechanism and perform the readjustment work, which causes a problem that the roll paper replacement work becomes complicated.
JP 2002-321851 A

  The present invention has been made in view of such problems, and an object thereof is to maintain a distance between a pair of guide plates adjusted according to the size of the roll paper without providing a complicated mechanism. Therefore, the present invention is to provide a roll paper support device capable of improving the work efficiency when replacing the roll paper.

In order to solve the above problems, the present invention has the following configurations.
The gist of the invention described in claim 1 is a roll paper support device for supporting the roll paper on the support means, which is disposed in the axial direction of the roll paper supported by the support means, and is located on both ends from the center. A shaft means in which a left spiral groove and a right spiral groove having different orientations are formed respectively, and a through hole having a circumferential groove to be screwed with the left spiral groove is formed and supported by the support means A right side abutting on the right side of the roll paper supported by the support means, wherein a left side guide means that abuts on the left side of the roll paper and a through-hole having a circumferential groove threadedly engaged with the right spiral groove is formed. A guide means; and a rotation restricting means for restricting the rotation of the left guide means and the right guide means around the shaft means, wherein the left guide means and the right guide means With rotation means, the in the axial direction of the roll paper is supported by the support means, and resides in the roll paper support apparatus characterized by being moved in conjunction with the opposite direction with the same moving amount.
According to a second aspect of the present invention, the left guide means and the right guide means are moved in the opposite direction with the same movement amount around the center position of the print range. It exists in the roll paper support apparatus of Claim 1.
The gist of the invention described in claim 3 resides in the roll paper support device according to claim 1 or 2, further comprising a click feeling imparting means for imparting a click feeling to the rotation of the shaft means at a constant period. .

  The roll paper support device of the present invention includes a left guide means and a right guide means, each having a through hole having a circumferential groove that is screwed with the left spiral groove and the right spiral groove formed in the shaft means. The left guide means is configured such that the means and the right guide means are moved in the axial direction of the roll paper supported by the support means in conjunction with the rotation of the shaft means and in the opposite direction with the same movement amount. By combining the moving mechanism for moving the right guide means in the axial direction of the roll paper supported by the support means and the fixing mechanism for fixing the left guide means and the right guide means, without providing a complicated mechanism, The distance between the left guide means and the right guide means adjusted according to the size of the roll paper can be maintained, and different sizes of roll paper can be loaded. Even if, it is not necessary to release the locking mechanism, there is an effect that it is possible to improve the work efficiency at the time of replacement of the roll paper.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a perspective view showing a configuration of an embodiment of a roll paper support device according to the present invention, FIG. 2 is a perspective view showing a configuration of a guide portion shown in FIG. 1, and FIG. 4 is a perspective view showing the configuration of the shaft portion and the guide portion shown in FIG. 1, and FIG. 5 explains the operation of the leaf spring shown in FIG. It is explanatory drawing.

  In the present embodiment, referring to FIG. 1, a printer that performs printing on a roll paper 1 such as a label or a seal temporarily attached onto a recording paper wound in a roll shape or a belt-like mount wound in a roll shape. 1 is a device that supports a roll paper 1 that is used in a facsimile and is supplied to a printing unit 2 that includes a thermal head 21 and a platen roller 22, and a support unit 3 that supports the roll paper 1 and the axial direction of the roll paper 1. A left guide portion 4 and a right guide portion 5 that perform positioning, a shaft portion 6 disposed in the axial direction of the roll paper 1 supported by the support portion 3, and a leaf spring 7 that is in contact with the shaft portion 6. And a scale 8 for confirming the positions of the left guide portion 4 and the right guide portion 5.

  Referring to FIG. 1, the support portion 3 has a support surface that supports the roll paper 1, and is formed by extending a left shaft support portion 31 and a right shaft support portion 32 that support the shaft portion 6 to both sides. .

  Referring to FIG. 2, the left guide portion 4 supports the roll paper 1 together with the left guide plate 41 that contacts the left side surface of the roll paper 1 supported by the support portion 3 and performs left-side positioning, and the support portion 3. A moving part 42 having a support surface is integrally formed. The moving part 42 is formed with a counterclockwise circumferential groove, and a circular through hole 43 through which the shaft part 6 is screwed is supported. The roll paper 1 is formed in the axial direction, and a protrusion 44 is formed on the upper portion of the moving unit 42.

  Referring to FIG. 2, the right guide portion 5 has a shape symmetrical to the left guide portion 4 and is in contact with the right side surface of the roll paper 1 supported by the support portion 3 so as to position the right side guide plate 51. And a moving part 52 having a supporting surface for supporting the roll paper 1 together with the supporting part 3 are formed integrally. The moving part 52 is formed with a clockwise circumferential groove, and the shaft part 6 is screwed together. A circular through hole 53 is formed in the axial direction of the roll paper 1 to be supported, and a protrusion 54 is formed on the upper portion of the moving part 52.

  Referring to FIG. 3, the shaft portion 6 is formed with a cylindrical central portion 62 in which a part of the peripheral surface is cut off at the central portion of the shaft 61 that is a cylindrical member, and from the central portion 62. A left-handed left spiral groove 63 and a right-handed right spiral groove 64 having the same pitch as the left-hand spiral groove 63 are formed on the circumferential surface of the shaft 61 facing left and right, and the shaft portion 6 is formed at one end. A dial 65 is provided for rotating the dial.

  As shown in FIG. 1, the shaft portion 6 is rotatably supported by the left shaft support portion 31 and the right shaft support portion 32 in the axial direction of the roll paper 1 supported by the support portion 3, and the center portion 62 is printed. It is positioned so as to be the center position of the printing range of part 2. Further, as shown in FIG. 4, the left guide portion 4 and the right guide portion 5 that move in the axial direction of the roll paper 1 supported by the support portion 3 as the shaft portion 6 rotates are attached to the shaft portion 6. It has been.

  In the left guide portion 4, a through hole 43 having a counterclockwise circumferential groove formed in the moving portion 42 is screwed into the left spiral groove 63 of the shaft portion 6, and the right guide portion 5 is formed in the moving portion 52. A through-hole 53 having a clockwise circumferential groove is screwed into the right spiral groove 64 of the shaft portion 6. Accordingly, the left guide portion 4 and the right guide portion 5 are moved in the opposite direction with the same movement amount as the shaft portion 6 rotates, and the dial 65 is operated as shown in FIG. When the shaft portion 6 is rotated in the direction of arrow A, the left guide portion 4 and the right guide portion 5 are centered on the center portion 62 in the direction indicated by the arrow A, that is, the center position of the print range. When the shaft 65 is rotated in the direction of arrow B by operating the dial 65 in the direction of approaching, the left guide portion 4 and the right guide portion 5 are in the direction indicated by the arrow B around the center portion 62, that is, The print positions are moved away from each other around the center position of the print range. In the present embodiment, as shown in FIG. 1, the left guide portion 4 and the right guide portion 5 are rotated about the shaft portion 6 so that the support portion 3 and the scale 8 are connected to the left guide portion 4 and the right guide portion. Since it functions as a rotation restricting means for restricting the rotation of the guide portion 5, the left guide portion 4 and the right guide portion 5 are supported by the support portion 3 when the shaft 65 is rotated by operating the dial 65. It is moved in the axial direction of the paper 1.

  The diameter of the shaft portion 6 and the pitches of the left spiral groove 63 and the right spiral groove 64 formed in the shaft portion 6 are supported by the support portion 3 with respect to the left guide portion 4 and the right guide portion 5. Even if an external force is applied in the axial direction of the roll paper 1, the shaft portion 3 is set so as not to rotate and the left guide portion 4 and the right guide portion 5 are moved. The left guide part 4 and the right guide part 5 cannot be moved unless they are rotated.

  The leaf spring 7 is disposed so as to contact the central portion 62 of the shaft portion 6, and bends when it is in contact with the circumferential portion of the central portion 62 as shown in FIG. As shown in FIG. 5B, when the center portion 62 is in contact with the cut portion, the bending is eliminated. Therefore, when the dial 65 is operated to rotate the shaft portion 6, a click feeling can be given for each rotation by the leaf spring 7.

  The scale 8 is disposed in the vicinity of the protrusions 44 and 54 formed on the moving portion 42 of the left guide portion 4 and the moving portion 52 of the right guide portion 5, respectively, and the left guide portion 4 is rotated by the rotation of the shaft portion 6. When the right guide portion 5 is moved in the axial direction of the roll paper 1 supported by the support portion 3, the size of the roll paper 1 to be supported is adjusted by aligning the protrusions 44 and 54 with the scale provided on the scale 8. The positions of the left guide portion 4 and the right guide portion 5 can be recognized. Protrusions 44 and 54 formed on the moving part 42 of the left guide part 4 and the moving part 52 of the right guide part 5 are provided at positions facing the scale 8, and the protrusions are provided on the scale 8 instead of scales. By forming recesses into which 44 and 54 are fitted, the positions of the left guide portion 4 and the right guide portion 5 corresponding to the size of the roll paper 1 to be supported may be recognized.

  As described above, according to the present embodiment, the left guide portion includes the through holes 43 and 53 having circumferential grooves that are respectively screwed into the left spiral groove 63 and the right spiral groove 64 formed in the shaft portion 6. 4 and the right guide part 5 respectively, and the left guide part 4 and the right guide part 5 are moved in the axial direction of the roll paper 1 supported by the support part 3 and the same movement amount as the shaft part 6 rotates. And a moving mechanism for moving the left guide portion 4 and the right guide portion 5 in the axial direction of the roll paper 1 supported by the support portion 6, and the left guide portion 4 and By combining the fixing mechanism for fixing the right guide portion 5, the distance between the left guide portion 4 and the right guide portion 5 adjusted according to the size of the roll paper 1 can be maintained without providing a complicated mechanism. If possible , Even in the case of mounting the roll paper 1 of different sizes, it is not necessary to release the locking mechanism, there is an effect that it is possible to improve the work efficiency at the time of replacement of the roll paper 1.

  Note that the present invention is not limited to the above-described embodiments, and it is obvious that the embodiments can be appropriately changed within the scope of the technical idea of the present invention. In addition, the number, position, shape, and the like of the constituent members are not limited to the above-described embodiment, and can be set to a suitable number, position, shape, and the like in practicing the present invention. In each figure, the same numerals are given to the same component.

It is a perspective view which shows the structure of embodiment of the roll paper support apparatus which concerns on this invention. It is a perspective view which shows the structure of the guide part shown in FIG. It is a perspective view which shows the structure of the shaft part shown in FIG. It is a perspective view which shows the structure of the shaft part and guide part which are shown in FIG. It is explanatory drawing explaining operation | movement of the leaf | plate spring shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Roll paper 2 Printing part 3 Support part 4 Left guide part 5 Right guide part 6 Shaft part 7 Leaf spring (click feeling provision means)
8 Scale 21 Thermal head 22 Platen roller 31 Left shaft support portion 32 Right shaft support portion 41 Left guide plate 42 Moving portion 43 Through hole 44 Protrusion 51 Right guide plate 52 Moving portion 53 Through hole 54 Protrusion 61 Shaft 62 Center portion (click feeling imparting means) )
63 Left spiral groove 64 Right spiral groove 65 Dial

Claims (3)

A roll paper support device for supporting roll paper on a support means,
Shaft means disposed in the axial direction of the roll paper supported by the support means, and formed with left-side spiral grooves and right-side spiral grooves in different orientations from the center toward both ends,
A left guide means that is formed with a through hole having a circumferential groove to be screwed with the left spiral groove, and that contacts the left side surface of the roll paper supported by the support means;
A right guide means that is formed with a through hole having a circumferential groove that is screwed with the right spiral groove, and that comes into contact with the right side surface of the roll paper supported by the support means;
A rotation restricting means for restricting the rotation of the left guide means and the right guide means around the shaft means;
The left guide means and the right guide means are moved in conjunction with the rotation of the shaft means in the axial direction of the roll paper supported by the support means and in the opposite direction with the same movement amount. A roll paper support device.   2. The roll paper support device according to claim 1, wherein the left guide means and the right guide means are moved in the opposite direction with the same movement amount around the center position of the printing range. 3. A roll paper support device according to claim 1, further comprising a click feeling imparting means for imparting a click feeling to the rotation of the shaft means at a constant period.

Images