JPH0420616Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Field of Use This invention relates to a label issuing device for electronic price scales that issues labels on which various data based on the weight of weighed items are printed.

Conventional technology Conventional electronic price scales are equipped with a printing device that issues labels with various data printed on them based on weighing values, but the printing device has a printer such as a thermal head and a platen that receives label paper. It is necessary.

Therefore, when looking at conventional scales, a side frame located outside the weighing section is installed vertically inside the scale body, and the printer and platen are attached to the outside of this side frame, but the side frame is vertical. Therefore, the printer and platen are mounted in a cantilevered state.

Problems that the invention aims to solve: Since the printer and platen are held in a cantilevered manner, the holding force on the free end side is weak and the position is likely to fluctuate.
Label paper cannot be fed stably,
Print quality is also adversely affected.

Means for solving the problem: A printer holding protrusion and a platen holding protrusion are integrally formed on the side frame to protrude horizontally, and the head mechanism part is held at at least two locations spaced apart in the protruding direction on the head holding protrusion. At the same time, the free end of the platen is held by the platen holding protrusion.

Function The printer holding protrusion and the platen holding protrusion provided on the side frame, which have high mechanical strength, can also have high mechanical strength, which allows the printer and platen to be held in a stable state. This makes it possible to feed the label paper in a constant state, and to maintain good print quality.

Embodiment An embodiment of this invention will be described based on the drawings. First, FIG. 6 shows the scale body 1. This scale body 1 has a measuring section 3 consisting of an internal load cell (not shown) and a mounting plate 2 connected to the load cell.
, a keyboard 4 and a display section 4a, and a cover 7 having two issuing ports 5 and 6 is detachably attached to the front surface.

Further, as shown in FIGS. 2 and 3, a base 8 and a side frame 9 which are housed inside the scale body 1 are provided, and this side frame 9 has enough strength to hold the first printer 10. A protrusion 11 is formed as a high head holding protrusion, and a supply shaft 12 is provided. The protrusion 11 is integral with the side frame 9 and is formed to protrude horizontally. In addition, supply shaft 1
2 holds a long mount (described later) on which a large number of labels are attached in the form of a roll.
Furthermore, the base 8 has a claw 15 and a mounting screw 16 for holding the second printer 13 and the hopper 14.
A corresponding mounting hole 17 is formed.

Next, as shown in FIG. 1, support plates 19 and 20 are provided which are connected by screws 18.
The support plate 20 is attached to the side frame 9 with screws 21. Gear 2 is mounted on the support plate 19.
3 is directly connected to the DC motor 22, and the gears 24 and 2 sequentially receive the rotation of the gear 23.
5, 26 and a one-way clutch 27 that transmits the rotation of the gear 26 to the winding shaft 28.
Further, the support plate 20 is provided with a bearing 29 that supports the winding shaft 28. 30 is a mount holder fitted onto the winding shaft 28.

Next, referring to FIG. 1, the first printer 10
Explain the structure of A protrusion 3 as a strong head holding protrusion integrally formed on the side frame 9
A bearing plate 32 is screwed to the tip of the side frame 9 and the bearing plate 32, and a platen 3 is attached to the side frame 9 and the bearing plate 32.
3 is rotatably held via a bearing 34. That is, one end of the platen 33 is pivotally attached to the side frame 9, and the other end is held by the protrusion 31 via the bearing 34 and the bearing plate 32. The platen 33 is connected to a step motor 38 attached to the side frame 9 via pulleys 35, 36 and a belt 37. A head frame 39 is screwed to the protrusion 11 and a bearing plate 39 is screwed to one side of the head frame 39.
A support shaft 40 is installed on the support shaft 40, and a head plate 42 that holds the thermal head 41 is attached to the support shaft 40.
and a pressing plate 43 having a pin 43a on the side are rotatably fitted, and a shaft 44 provided on the pressing plate 43 holds a spring (not shown) that urges the head plate 42 downward. ing. Further, a shaft 45 erected in the head frame 39 is provided with a pressing plate 45 by resiliently engaging a pin 43a with a spring 47.
A set lever 47 is rotatably supported to fix the head frame 3 in a fixed position and apply the pressure of the spring to the head frame 42. Reference numeral 48 denotes a locking plate that prevents the support shaft 40 from rotating and prevents the head plate 42 from falling off from the support shaft 40.

Next, referring to FIG. 4, the second printer 13
Explain the structure of A hole 52 for holding a bearing 51 of the platen 50 and a support shaft 53 are provided on both sides of the support plate 49.
A hole 54 is formed in the bottom surface of the support plate 49 to engage with the claw 15 of the base 15.
and a hole 56 through which the mounting screw 16 is passed. A hole 56 through which the mounting screw 16 passes is also formed in the hopper 14 (see FIG. 2). Also, Hotupa 1
A paper detection switch 57 is attached to 4. Pulleys 59 and 60 and a belt 61 are provided on one side of the support plate 49 to transmit the rotation of a step motor 58 screwed to the platen 50.
Two flanged pins 64 are erected on a head plate 63 for fixing a thermal head 62 having the same specifications as the thermal head 41 described above, and an opening 65 through which the flanged portions of these flanged pins 64 are inserted, A head support plate 67 is provided which has a notch 66 that engages with the small diameter portion of the pin 64. The head support plate 67 and the pressing plate 68 are rotatably fitted onto the support shaft 53. A spring 69 is held on a screw 68a screwed into the head support plate 67. Further, a pin 70 provided upright on the support plate 49 elastically engages with a pin 71 provided upright on the side surface of the press plate 68 by the pressure of a spring 72, thereby holding the press plate 68 in a fixed position. Set lever 7 that is fixed and applies pressure from the spring 69 to the head support plate 67
3 is rotatably held. Further, a press plate 47 is attached to the head support plate 67 with screws 75, and presses the head plate 63 to maintain the small diameter portion of the flanged pin 64 and the notch 66 in an engaged state. A serrated blade 76 is formed, and a cutter 77 that approaches this blade 76 is screwed to the support plate 49.

Next, a circuit diagram is shown in FIG. A decoder 79 controlled by the CPU 78, a RAM 80, a ROM 81, an I/082, a keyboard display controller 83, and printer controllers 84 and 85 are provided. The keyboard 4 and the display section 4a are connected to the keyboard display section controller 83. The printer controllers 84 and 85 are the first,
It controls the second printers 10 and 13.

In such a configuration, first, looking at the holding state of the first printer 10, the first printer 10 is held by the protrusion 11, which is integrally formed with the side frame 9 and protrudes horizontally, at at least two locations spaced apart in the protrusion direction. Therefore, its holding is extremely strong, and it remains stable even when external forces act on it. Further, since the free end side of the platen 33 is similarly held by the protrusion 31 that integrally projects from the side frame 9, it is substantially held at both ends, and even when external force from the mount 87 is applied. It is stable and does not cause any fluctuation in the movement of the mount 87. Therefore, print quality is maintained well.

Next, the operation will be explained. First, a long mount 87 having a large number of labels 86 pasted thereon is wound into a roll and attached to the supply shaft 12.
For example, receipt paper 8 wound into a roll is placed in 4.
8, inputting the unit price of the product, etc. are performed using the keyboard 4. The product is weighed by placing it on the tray 2, and the measured value, unit price, price, etc. are displayed on the display section 4a, and the first and second printers 10, 1
3 is printed. Platen 33, 5 after printing
0 and the winding shaft 28 rotate, and the mount 87 is bent by the label peeling body 89 (see FIG. 5), so the label 86 is peeled off from the mount 87 with the printed side facing up and issued from the issuing port 5. Since the receipt paper 88 has a curl, it protrudes from the issuing port 6 with the printed side facing forward. If the receipt paper 88 protruding from the issuing port 6 is pulled downward, it will be cut by the blade 76 of the pressing plate 74, and if it is pulled upward, it will be cut by the cutter 77 and issued as a receipt paper.

In this case, a step motor 38 rotates the platen 33 and a DC motor 22 drives the take-up shaft 28.
and thermal head 41 are controlled by printer controller 84, and step motor 58 for rotating platen 50 and thermal head 62 are controlled by printer controller 85.

As described above, since the two printers 10 and 13 are provided, each time a sold product is weighed, the printer 10 issues a label 86 corresponding to the product.
On the other hand, a receipt can be issued by the printer 13 for each customer. Furthermore, instead of issuing receipts, it is also possible to record daily sales details. The user is free to decide which one to select.

Further, if only the label issuing function is required, the second printer 13 can be easily removed by removing the mounting screw 16 and removing the notch 55 from the claw 15. This is extremely advantageous for manufacturers of electronic fare scales in terms of production management, as it allows them to easily change models.

Furthermore, by setting the specifications of the thermal heads 41 and 62 to be the same, a common print buffer can be used.

Note that the head plate 4 of the upper printer 10
2 and the press plate 43 do not rotate below the platen 33, and the head support plate 67 and press plate 68 of the lower printer 13 do not rotate above the platen 50. The hopper 14 can be installed in a narrow space between the printers 10 and 13, contributing to miniaturization of the entire apparatus.

Effects of the invention Since this invention is configured as described above, the head holding protrusion and the platen holding protrusion provided on the side frame, which have high mechanical strength, can also have high mechanical strength. According to
It is possible to hold the printer and the platen in a stable state, to feed the label paper in a constant state, and to maintain good print quality.

[Brief explanation of the drawing]

The drawing shows one embodiment of this invention.
The figure is an exploded perspective view showing the structure of the first printer and the mounting structure of the take-up shaft. Figure 2 is an exploded perspective view showing the mounting structure of the second printer. Figure 3 is a perspective view.
The figures are an exploded perspective view showing the structure of the second printer, FIG. 5 is a side view, FIG. 6 is a perspective view showing the overall structure in a reduced scale, and FIG. 7 is an electronic circuit diagram. DESCRIPTION OF SYMBOLS 1... Scale body, 3... Measuring part, 9... Side frame, 10... Printer, 11... Protrusion (printer holding protrusion), 31... Protrusion (platen holding protrusion), 33... platen.

Claims (1)

[Scope of utility model registration request] A side frame that closes the outer surface of the weighing section is provided vertically inside the scale main body in which the weighing section is provided, and a horizontal frame that holds the head at at least two points spaced apart in the protruding direction on the outer surface of the side frame is provided. A high-strength head holding part and a high-strength platen holding protrusion, to which a bearing plate for holding the other end of the platen whose one end is supported by the side frame is fixed, are integrally formed in a protruding manner. A label issuing device for electronic fare scales.