JPH085817Y2 - Label printer mount feeder - Google Patents

Description

TECHNICAL FIELD The present invention relates to a mount feeding device for a label printer.

Conventional technology Conventionally, a long sheet of paper with a large number of labels attached was sent to the printing section, and the printed sheet was peeled off by bending the sheet of paper at an acute angle, and the used sheet of paper was taken up by the take-up roll. There is a label printer that is designed to be rolled up.

Problems to be Solved by the Invention However, it is extremely difficult to set the paper sheet between the printing unit and other functional parts because it is difficult to see the inside of the narrow housing and it is hard to get a hand. Since the mount is set outside the housing, the supply shaft that holds the mount before use can be separated from the housing, but the mount take-up shaft is disconnected from the drive shaft and the housing is cut off. Separation from the above causes the mount take-up shaft to rotate until it is connected to the drive shaft, and the mount cannot be stretched. As a result,
Even if the supply shaft and the mount take-up shaft are separated from the housing, it is difficult to pass the loose mount through the bent path.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a mount feeding device for a label printer that allows replacement of the mount extremely easily.

Means for solving the problem A side plate is provided which holds one side of the printing portion for printing on a label attached to a long mount and projects the tip of the drive shaft, and is detachably attached to this side plate. A cassette case is provided, and a protrusion and a recess are formed on the inner periphery to engage with the outer periphery of the drive shaft in the rotational direction and allow relative axial insertion / extraction operation, and an expanded portion is formed on the base. The formed inner cylinder and the mount are wound, and an outer cylinder having a collar-shaped braking plate formed at one end is fitted and fixed to form a mount winding shaft,
A supply shaft for winding and holding the mount in a roll shape is fixedly provided on the opposing surface of the cassette case, the braking plate is opposed to the inner surface of the opposing surface, and the expansion surface is provided on the outer surface of the opposing surface. The opening portion is positioned and the mount paper winding shaft is slidably and rotatably fitted in the axial direction, and the braking plate is provided on the facing surface between the outer surface of the facing surface and the expanding portion. An urging member for urging the mount winding shaft is attached in a pressure contacting direction, a guide portion for defining the path of the mount is formed in the cassette case, and the mount winding is performed when the cassette case is attached to the side plate. A pressing portion for pressing the shaft in the axial direction against the urging force to separate the braking plate from the facing surface is provided at the tip of the drive shaft.

As a result, the cassette case is removed from the side plate, and in this state the mount is mounted on the supply shaft and the mount take-up shaft. In this state, the brake plate and the opposing surface are brought into contact with each other to prevent the mount take-up shaft from rotating and apply tension to the mount, and the guide portion determines the path of the mount. Therefore, the mount can be easily replaced.

Embodiment An embodiment of the present invention will be described based on the electronic charge balance shown in the drawings. First, the housing 1 is shown in FIG. This housing 1 has a weighing section 3 consisting of an internal load cell (not shown) and a tray 2 connected to this load cell, a keyboard 4 and a display section 5, and an issuing port 6 on the front side. The panel 7 it has is detachably attached. A cover 8 is detachably attached to the right side of the housing 1.

Further, as shown in FIG. 3, a base 9 accommodated inside the housing 1 and side plates 10 facing each other with a space provided on the inner surface of the cover 8 are provided with a printing portion 11 on the side plate 10. And the drive shaft 12 is projected.

Next, the supporting structure of the thermal head in the printing unit 11 is shown in FIGS. Headboard for side plate 10
A protrusion 10a for screwing 13 together is integrally formed, and a head support 16 for holding a thermal head 15 and a pressing plate 17 are rotatably supported on a spindle 14 erected on the head frame 13 so as to be vertically rotatable. ing. A pin 19 is erected on an arm portion 18 formed on the right side of the head frame 13, and a set lever 20 is biased in the counterclockwise direction and rotatably held on the pin 19. The set lever 20 is formed with an engaging portion 22 that engages with a pin 21 standing on the right side of the pressing plate 17.
A screw 23a is retained on the pressing plate 17 by a nut 23c so as to be slidably held, and a head support plate 16 is held by two flanges 23b formed at the lower end of the screw 23a.
Between the pressure plate 17 and the pressing plate 17 is a compression spring 23 wound around a screw 23a.
Is installed. The pressing plate 17 is biased upward by the compression spring 23, but is positioned by the engagement of the pin 21 and the engaging portion 22 and is stationary at a fixed position. The head support plate 16 is biased toward the platen 24 by the compression spring 23. As shown in FIG. 3, the platen 24 is rotatably supported by the side plate 10 and the bearing plate 25. The base of the bearing plate 25 is held by the side plate 10 via a bar (not shown).

Thus, there is provided a cassette case 28 having a facing surface 26 facing the side plate 10, and an opening surface 27 facing the cover 8 is formed on the opposite side of the facing surface 26. The cassette case 28 has a shaft 29, which is a holding portion erected from the side plate 10.
The tubular portion 30 and the tubular supply shaft 31 which are fitted and held by the are integrally formed, and an opening 32 through which the printing portion 11 is escaped is formed. The supply shaft 31 holds and fits the winding core 34 of the long mount 33 wound in a roll with some friction. That is, the mount 33 is configured so as not to slip on the supply shaft 31 unless it is pulled by a constant tension. A large number of labels 34a are attached to the mount 33. Further, the cassette case 28 is formed with guide portions 35, 36, 37 that determine the path of the mount 33. The guide 35 is the mount 33
The guide portion 36 bends the mount 33 at an acute angle to serve also as a label peeling portion, and the guide portion 37 is a square hole for reversing the direction of the mount 33 through the mount 33. In addition, the cassette case 28
A mount paper winding shaft 38 is provided on the facing surface 26 of. A groove 40 that engages with a U-shaped paper retainer 39 is provided on the outer periphery of the mount winding shaft 38.
Are formed.

As shown in FIGS. 1 and 2, the mount winding shaft 38 is an outer cylinder.
41 and an inner cylinder 42 are fitted together and joined by a screw 43. A braking plate 44 facing the inside surface of the facing surface 26 is integrally formed at the end portion of the outer cylinder 41, and the facing surface 26 at the end portion of the inner cylinder 42.
An expanding portion 46 that holds the rib 45 is integrally formed with the outer surface of the. A pulley 47 connected to a motor (not shown) is rotatably supported on the side plate 10.
A deformed shaft 48 having a D-shaped cross section, which rotates integrally with the pulley 47, is fitted to the drive shaft 12 and joined by a screw 50.

Next, an assembly structure of the outer cylinder 41 and the inner cylinder 42 and a connection structure of the inner cylinder 42 and the drive shaft 12 will be described. First, the shape of the drive shaft 12 is shown in FIGS. A pressing portion 49 that presses the inner cylinder 42 is formed at the tip of the drive shaft 12, and a taper surface that tapers from the base on the pulley 47 side toward the tip is formed on the outer periphery.
51 and four protrusions 52, which are protrusions along the tapered surface 51, are formed. The widths of these protrusions 52 gradually decrease from the base portion on the pulley 47 side toward the tip, and further, the protruding height in the outer circumferential direction gradually decreases from the cross-sectional position along the line AA shown in FIG. 8 to the tip. In addition, the center of the drive shaft 12 has a deformed hole that matches the cross-sectional shape of the deformed shaft 48.
53 is formed, and a mounting hole 55 through which the screw 50 is inserted is formed in the bottom 54 of the deformed hole 53 for connection with the deformed shaft 48.

The outer cylinder 41 is as shown in FIGS. 12 to 14. That is, a groove 40 is formed on the outer circumference, a braking plate 44 is formed on the base, a tapered hole 56 is formed on the inner side, which tapers from the base toward the tip, and the inner peripheral surface of the tapered hole 56 is formed. Protrusion
57 is formed, and a mounting hole 59 is formed in the bottom 58 of the tapered hole 56.

The inner cylinder 42 is as shown in FIGS. 15 to 21. That is, a tapered surface 60 that fits into the tapered hole 56 of the outer cylinder 41 is formed on the outer circumference, an expanded portion 46 is formed on the base, and a protrusion 57 of the outer cylinder 41 is engaged at the tip. A stop hole 61 and a boss 62 fitted into the mounting hole 59 of the outer cylinder 41 are formed. Further, a taper hole 63 is formed inwardly so as to match the taper surface 51 of the drive shaft 12, and on the inner surface of the taper hole 63, twelve recessed lines 64 are formed. The width of these recesses 64 changes in a taper shape from the base to the tip so as to mesh with the protrusion 52 of the drive shaft 12. In addition, these recesses 64
The projecting height of the ridge 65 located between the positions gradually decreases from the cross-sectional position along the line BB in FIG. 16 toward the end surface of the expanding portion 46.

Then, the inner cylinder 42 and the outer cylinder 41 are fitted, the protrusion 57 and the locking hole 61 are engaged, the boss 62 is fitted in the mounting hole 59, and the screw 43 is bossed from the tip of the outer cylinder 41. The mount winding shaft 38 is assembled by being screwed into the center of 62. Further, the drive shaft 12 is held by screwing a screw 50, which is fitted into the deformed shaft 48 and then inserted into the mounting hole 55, into the center of the deformed shaft 48.

In such a configuration, when mounting the mount 33,
The cover 8 is removed from the housing 1, and the cassette case 28 is pulled out. Then, the core 34 of the mount 33 is fitted to the supply shaft 31, the pulled-out mount 33 is passed under the guide 35, bent at the guide 36 and inserted into the guide 37, and the tip of the outer cylinder 41 is further inserted. It is wrapped around the outer periphery and fixed on it by a paper retainer 39 that engages with the groove 40. This state is as shown in FIG. 2, and since the mount winding shaft 38 is urged by the force of the spring 45 and the braking plate 44 is pressed against the facing surface 26, the movement of the mount winding shaft 38 in the rotational direction is prevented. It The core 34 is also prevented from moving in the rotational direction by friction with the supply shaft 31.
This prevents the mount 33 from loosening.

Then, the set lever 20 is rotated clockwise around the pin 19 to release the engagement between the pin 21 and the engaging portion 22, and the support shaft
The pressing plate 17 is rotated upward around the center 14. As a result, the head support plate 16 is lifted by the collar 23b of the screw 23a, and a space is provided between the thermal head 15 and the platen 24. When the tube portion 30 is fitted to the shaft 29 in this state, the mount 33 is guided by the guide portions 35 and 36.
The portion located between is easily passed between the thermal head 15 and the platen 24. Further, since the bottom of the tapered hole 63 of the inner cylinder 42 is pressed by the pressing portion 49 of the drive shaft 12, the mount winding shaft.
The spring 28 is axially displaced while compressing the spring 45, and the braking plate 44 is separated from the facing surface 26 of the cassette case 28 as shown in FIG. Then, the opening surface 27 of the cassette case 28 is attached to the housing 1
It is closed by the cover 8 attached to. In this state, when the motor drives the pulley 47, the drive shaft 12 rotates, and this rotation is transmitted to the mount take-up shaft 38 by the engagement of the protrusion 52 and the recess 64.

Note that the mount 33 changes depending on the width of the label 34a used. Therefore, corresponding to this, a plurality of types of cassette cases 28 are provided for different mounts 33, and as shown in FIG. 3, mechanical or photoelectric conversion for detecting interference or approaching movement of the facing surface 26 of the cassette case 28. A plurality of switches 66 of the formula are provided on the side plate 10, and for selectively operating these switches 66, for example, the facing surface 26 of the cassette case 28 has an opening that opposes one of the switches 66 according to the type of the label 34a. (Not shown). As a result, if there are four switches 66, a 4-bit digital signal that changes depending on the type of the label 34a when the cassette case 28 is attached to the side plate 10 is obtained. Therefore, the types of the mount 33 and the label 34a are automatically determined. Can be detected.

The pressing portion that presses the board winding shaft 38 to separate the braking plate 44 from the facing surface 26 may be formed on the side surface of the pulley 47 or the side plate 10.

Effect of the Invention Since the invention is configured as described above, the mount can be set in the cassette case in a large work space with the cassette case removed from the side plate, and in this state, the braking plate and the opposing surface can be set. The rotation of the mount take-up shaft is prevented by abutment, tension is applied to the mount, and the guide can determine the path of the mount.When the cassette case is attached to the side plate, the mount take-up shaft is pressed by the pressing surface. The braking plate can be separated from the facing surface of the cassette case to stop the braking action of the mount take-up shaft and the mount take-up shaft can be connected to the drive shaft, thus facilitating the replacement of the mount. Has the effect that can.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention. FIG. 1 is a horizontal sectional view showing a state in which a drive shaft and a mount take-up shaft are connected by mounting a cassette case on a side plate, and FIG. 2 is a cassette from the side plate. FIG. 4 is a horizontal sectional view showing a state in which the case is removed, FIG. 3 is an exploded perspective view showing a mounting relationship between the side plate and the cassette case, and FIG.
FIG. 7 is an enlarged perspective view showing the printing unit, FIG. 5 is an enlarged side view showing the printing unit, FIG. 6 is a perspective view showing the housing of the electronic fee scale in a reduced scale, and FIGS. FIG. 7 shows a drive shaft, FIG. 7 is a side view, FIG. 8 is a vertical side view, FIG. 9 is a rear view, and FIG. 10 is a vertical front view of the line AA in FIG. FIG. 11 is a front view, FIGS. 12 to 14 show an outer cylinder, FIG. 12 is a vertical side view, FIG. 13 is a rear view, FIG. 14 is a front view, and FIGS. 15 to 21. Indicates the inner cylinder.
Figure 15 is a side view, Figure 16 is a vertical side view, and Figure 17 is a rear view.
FIG. 18 is a front view, FIG. 19 is a longitudinal rear view of the line BB in FIG. 16, FIG. 20 is a longitudinal rear view of the line C-C in FIG. 16, and FIG. 21 is FIG. FIG. 4 is a partial longitudinal rear view showing an enlarged cross-sectional shape of a groove and a ridge in FIG. 10 ... Side plate, 11 ... Printing part, 12 ... Drive shaft, 26 ... Opposing surface, 28 ... Cassette case, 29 ... Shaft (holding part), 31 ...
… Supply shaft, 33 …… Backing paper, 34a …… Label, 35-37 …… Guide part, 38 …… Backing paper take-up shaft, 49 …… Pressing surface, 52 …… Projection (projection), 64 …… Concave Article (recess)

Claims (1)

[Scope of utility model registration request] 1. A cassette case which holds one side of a printing section for printing on a label attached to a long mount and projects a tip of a drive shaft, and a cassette case detachably attached to the side plate. A protrusion and a recess are provided on the inner periphery of the drive shaft, which engages with the outer periphery of the drive shaft in the rotational direction and allows relative insertion and removal operation in the axial direction, and the base portion has an expanded portion. An inner cylinder and an outer cylinder on which the mount is wound and a brim-shaped braking plate is formed at one end are fitted and fixed to each other to form a mount winding shaft, and the mount is mounted on an opposite surface of the cassette case. The mount winding shaft is fixedly provided with a supply shaft for winding and holding it in a roll shape, the braking plate is opposed to the inner surface of the facing surface, and the expanding portion is positioned on the outer surface of the facing surface. Is slidably and rotatably fitted in the axial direction, and An urging member for urging the mount take-up shaft in the direction in which the braking plate is pressed against the facing surface is attached between the spread part and the guide case that defines the path of the mount in the cassette case. , A pressing portion is provided at the tip of the drive shaft for axially pressing the mount take-up shaft against the urging force of the cassette case when the cassette case is attached to the side plate to separate the braking plate from the facing surface. A label feeding device for a label printer.