JPH065316Y2 - Roll paper support device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roll paper support device, and more particularly, to a support device that supports a roll paper so that a roll set shaft can be pulled out freely, such as a label roll paper in a label printer.

(Prior art and its problems) In label printers and the like, a plurality of types of label roll papers having different label widths are appropriately exchanged and used, but roll set shafts having different lengths are used accordingly, or roll set shafts having different lengths are used. It is necessary to change the roll paper receiving width. Conventionally, Japanese Utility Model Laid-Open No. 59-40246 is known as a supporting device in which a roll paper receiving width of a roll setting shaft is variable.

This conventional device is a member of the roll set shaft (5) (5)
A screw hole (5c) is formed in the screw hole, and a screw shaft (6) is screwed into the screw hole. The component member (5) is attached to the screw shaft (6).
(5) is screwed and the nut (7) is used to form the component (5).
(5) is fixed at a desired position to change the receiving width of the roll paper. However, in the case of a label printer, when the types of labels used increase, roll papers with different widths may be used even in the same sales floor. However, according to the conventional apparatus, the above-mentioned constituent members are changed every time the roll paper is replaced. (5) Operate (5) to move the nut (7)
It is necessary to perform the operation of fixing with.

Therefore, there is a problem that replacement of the roll paper is troublesome and workability is poor.

In order to eliminate such a conventional problem, the present invention can easily replace roll papers having different widths with good operability.
An object is to provide a roll paper support device having excellent workability.

(Technical Means for Achieving the Object) The roll supporting device of the present invention includes a cylindrical roll set shaft that inserts and supports the roll paper, and a side plate member that fits on the shaft and supports the side surface of the roll paper. The side plate member is provided with a pressing member that elastically engages the inner wall of the roll set shaft and urges the inner wall in the expanding direction, and the tip end portion of the roll set shaft extends along the axial direction. It is characterized in that a plurality of guide pieces are formed by the cutout holes, and an insertion hole for inserting the guide piece is formed in the side plate member.

(Operation) According to the present invention, when the side plate member is fitted and slid on the roll set shaft, the pressing member elastically engages and presses the inner wall of the roll set shaft and temporarily fixes the side plate member at a desired position. Therefore, if the side plate member is moved to the side face of the roll paper while the roll paper is attached to the roll set shaft, the side plate member is temporarily fixed at the position corresponding to the width of the roll paper. it can. Further, by inserting the guide piece of the roll set shaft into the insertion hole of the main body, the guide piece is urged in the expanding direction by the pressing member, and the outer surface of the guide piece is restricted from engaging with the upper peripheral surface of the insertion hole. The temporary fixing of the side plate member is more reliably performed.

(Example) The roll paper supporting device (A) of the present invention will be described in detail with reference to Figs.

The supporting device (A) is composed of a cylindrical roll set shaft (2) whose one end can be sealed, and a side plate member (3) which fits and slides on the shaft, and the set shaft (2) has its sealing surface as a substrate ( It is fixed to the 101) with a mounting screw (4) and cantilevered at a predetermined position in the label printer.

Further, pins (5) and (5) are integrally provided on the sealing surface of the set shaft (2) so that the pins (5) and (5) are fitted in holes (not shown) of the substrate (101) to set the shaft (5). 2) It is a detent when mounting on the board (101).

The set shaft (2) is made of a resin such as ABS resin, and a plurality of guide pieces (7) divided in the circumferential direction by forming a plurality of cutout holes (6) ... (7)
Is formed, and the tip end of the set shaft (2) is made to have elasticity by the guide pieces (7) (7).

The central opening portion of the label roll paper (1) is inserted and supported from the opening end side of the set shaft (2).

The side plate member (3) has an auxiliary plate (3) on the outer circumference of the circular main body (3a).
b) (3b) ... Protruding in a cross shape and the main body (3a)
Insert the insertion tube (8) on one side surface (called the inner surface side) of the main body (3a)
And a reinforcing edge (3a ') in which the outer peripheral edge of the main body (3a) is built up in a cylindrical shape is formed on the other side surface (referred to as the outer surface side) (Figs. 1 and 2). Figure), body (3a) and auxiliary plate
(3b) Reinforcing ribs (13) are formed on the outer surface side of (3b) (FIG. 4). The insertion tube (8) constitutes a pressing member in the present invention, and a plurality of insertion pieces (10) (10) divided by a plurality of notch holes (9) ...
Are formed, and the insert pieces (10), (10) ... Are made to have elasticity.

The insertion tube (8) is inserted into the set shaft (2), the outer diameter of which is slightly smaller than the inner diameter of the set shaft (2), and the insertion piece (10) is set at each tip. A protruding ridge (10a) having a diameter slightly larger than the inner diameter of the shaft (2) is integrally projected so that it can be easily inserted into the set shaft (2) from the protruding ridge (10a) to the tip of the insertion piece (10). Make a smooth slope.

Therefore, the side plate member (3) is inserted by inserting the insertion tube (8) into the set shaft (2) in a fitting manner.
(10) Each protruding ridge (10a) of (10) is elastically engaged and pressed against the inner wall of the set shaft (2) to mount the side plate member (3) at a desired position.

Further, the side plate member (3) has partition walls (11) (11) on the body member (3a).
... through the insertion holes (12) (12) ... at intervals in the circumferential direction, and the guide pieces (7) (7) of the set shaft (2) are inserted into the insertion holes (12) (12). )… Is inserted. The upper peripheral surfaces (12a) (12a) of the insertion holes (12) (12) ... are the insertion cylinders (8).
It is concentric and has a diameter slightly larger than the outer diameter of the set shaft (2).

That is, the insertion holes (12) (12) ... Are located on the outer circumference of the insertion tube (8) and are located on the guide pieces (7) (7) of the set shaft (2).
The partition walls (11) (11) between the insertion holes are arranged to face the cutout holes (6) (6) of the set shaft (2).

As a result, when the insertion tube (8) of the side plate member (3) is inserted into the set shaft (2), the guide piece (7) of the set shaft (2) is inserted.
When the tip reaches the main body (3a) of the side plate member (3),
When the partition wall (11) faces the cutout hole (6) or the insertion hole (12) faces the guide piece (7) and the insertion cylinder (8) is further pushed, the guide piece (7) is inserted into the insertion hole (12). ).

When the guide piece (7) is inserted into the insertion hole (12), the outer surface of the guide piece (7) slightly biased in the expanding direction by the protruding ridge (10a) of the insertion piece (10) is Since the engagement with the upper peripheral surface (12a) of the insertion hole (12) is restricted, the side plate member (3) has the protruding ridges (10a) (10a) ... and the upper periphery of the insertion holes (12) (12). Face (12a)
Since it is supported by (12a) ..., the mounting is more reliable, and the side edge of the guide piece (7) is restricted by the side peripheral surface of the insertion hole (12) and is mounted without swinging.

Thus, in order to mount the label roll paper (1) on the supporting device (A), the insertion tube (8) of the side plate member (3) is pulled out from the set shaft (2) and then mounted on the set shaft (2). The label roll paper (1) is inserted and then the insertion tube (3) of the side plate member (3) is inserted into the set shaft (2), and the main body part (3a) of the side plate member (3) and the auxiliary plate (3) are inserted. The inner surface side of 3b) may be inserted until it abuts the side surface of the roll paper (1).

That is, as described above, the insertion pieces (10), (10) of the insertion tube (8)
The protruding ridges (10a) of ... engage with the inner wall of the set shaft (2) while the guide pieces (7) (7) of the set shaft (2) engage with the insertion holes (12) in an insertion manner. The side plate member (3) is attached to the set shaft (2), and the side of the roll paper attached to the set shaft (2) can be positioned corresponding to the width (L) of the roll paper (1) ( (Fig. 1).

When replacing the roll paper (1 ') having a different width, the side plate member (3) is strongly pulled outward, the insertion tube (8) is pulled out from the set shaft (2), and the roll paper (1) is pulled out. After removing the roll paper (1 ') and attaching the new roll paper (1') to the set shaft (2), the insertion tube (8) of the side plate member (3) is inserted as described above.
By inserting the set axis (2) into the operation,
Set shaft (2) corresponding to the width (l) of roll paper (1 ')
The roll paper receiving width (1 ') is obtained (Fig. 3).

That is, even when the widths of the roll papers are different, the roll papers can be replaced by the same operation without adjusting the setting shaft (2).

Next, an optimum embodiment of the label printer using the present invention will be described with reference to FIG. 4. In the figure, (100) is a case, (101) is a substrate, (102) is a label position detector, and (103) is Guide shaft, (10
3 ') is a guide member, (104) is a printing unit including a thermal head (105) and a platen roller (106), (107) is a dispenser, (108) is a cutter, (109) is a label issuing port, ( 11
Reference numeral 0) is a motor for driving and rotating the platen roller (106), (111) is a mount winding shaft, and (112) is a motor for driving the winding shaft.

Further, (A) in the figure is a roll paper supporting device of the present invention,
(1) is the label roll paper.

The label roll paper (1) has labels attached on the backing paper at regular intervals, and is pulled out from the supporting device (A) by the rotation of the platen roller (106) and the required data is printed by the thermal head (105). The label (1a) is peeled from the mount (1b) through the dispenser (107), and the label issuing port (109)
Issued by, the mount (1b) is wound around the winding shaft (111).

In the printing section (104) of FIG. 4, one end of the (30) is a support shaft (3
It is a head mounting plate attached to 1), and this mounting plate (30)
The thermal head (105) is attached to the.

On the other hand, a bearing plate (33) is provided on the upper surface of the head mounting plate (30),
A leaf spring attachment plate (35) is rotatably attached to the bearing plate (33) via a pin (34), and a leaf spring (36) is attached to the attachment plate (35). The leaf spring (36) is provided with a hemispherical pressing piece (37) on the lower surface of the tip thereof, and the pressing piece (37) is grounded to the upper surface of the tip of the head mounting plate (30) so that the elastic force of the leaf spring (36) is thermally reduced. Try to put it on the head (105).

Thus, the leaf spring (36) is connected to the head mounting plate (3
Since the grounding at 0) is small, the grounding portion at the tip of the leaf spring is small, so even if the leaf spring is twisted and attached regardless of the width of the leaf spring, the deviation from the center is extremely small and the pressing force on the left and right is made substantially equal. Therefore, it is possible to solve the conventional inconvenience of being unreadable by a scanner due to uneven print density.

In the figure, (38) is an adjusting screw for adjusting the pressing force of the leaf spring (36), and (39) is a tension coil spring (4
It is a lever that opens against the elasticity of (0).

(Effects) According to the roll paper supporting device of the present invention, the pressing member is engaged and pressed against the inner wall of the set shaft, and the engagement of the outer surface of the guide piece with the upper peripheral surface of the insertion hole is restricted at two positions. , Temporarily fix the side plate member that fits and slides on the roll set shaft at a desired position.

Therefore, even when roll papers having different widths are used, the side plate member can be attached by the same operation of fitting the side plate member to the set shaft and sliding it against the side face of the roll paper, thereby changing the length of the set shaft. The roll paper can be replaced or attached more easily than the conventional device.

Moreover, since the side plate member is temporarily fixed by the engagement at the two places as described above, the side plate member fitted and slid on the roll set shaft is securely fixed at a desired position where the side plate member abuts the side surface of the roll paper. The paper can be sandwiched, so that the above-mentioned advantages can be obtained while surely preventing the roll paper from tilting and causing the meandering of the paper delivery.

[Brief description of drawings]

FIG. 1 shows a roll paper supporting device of the present invention, and FIG.
-(I) line sectional view, FIG. 2 is an exploded perspective view of the device of the present invention,
FIG. 3 is a sectional view corresponding to FIG. 1 in a state in which the roll paper is exchanged, and FIG. 4 is a sectional side view of a label printer equipped with the device of the present invention. In the figure, (A) is a supporting device, (1) is label roll paper,
(2) is a roll set shaft, (3) is a side plate member, (6) is a cutout hole, (7) is a guide hole, (8) is an insertion tube, (9) is a cutout hole, (10) is an insertion piece, (10a) is a ridge and (12) is an insertion hole.

Claims (1)

[Scope of utility model registration request] 1. A cylindrical roll set shaft for inserting and supporting a roll paper, and a side plate member which is fitted to the shaft and supports a side face of the roll paper. The side plate member is elastically attached to an inner wall of the roll set shaft. A pressing member that engages and urges the inner wall in the expanding direction is provided, and a guide piece divided into a plurality of notches along the axial direction is formed at the tip of the roll set shaft. A roll paper supporting device, wherein an insertion hole for inserting the guide piece is formed in the side plate member.