JPH091892A - Device for controlling degree of parallelization of frame for printing machine - Google Patents

Abstract

PURPOSE: To precisely control the parallelization between a printer head and a platen by operationally controlling an attaching angle relative to the connecting shaft of a printer frame or a base main body with the use of a crisscross driver without the need to move a connecting shaft with the printer frame attached thereto in a printing machine such as a time stamp. CONSTITUTION: An adjusting plate 15 rotatably fixed to a connecting shaft 14 in its rear end part is axially supported to the rear one side part 13b of a printer frame 13 with a printer 30 attached thereto, or the rear one side part of a base main body 11 with a platen 1P provided thereto, and rotating the projection 15b of the adjusting plate 15 in engagement with the tip end of a crisscross driver allows an attaching angle of the printer frame 13 or base main body 11 to be controlled and, thus, controlling the degree of parallelization between the face of the printer head 30 and the platen 1P.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printer using a printer, and a printer frame (movable frame) to which the printer is attached in order to keep the surface of the printer head and the platen surface in parallel. The present invention relates to a parallelism adjusting device for a frame for a printing machine, which is devised so that the parallelism with a base body in which the printer frame is rotatably mounted vertically can be accurately adjusted.

[0002]

2. Description of the Related Art For example, in a conventional printing machine (time stamp) equipped with a dot printer, a printer frame equipped with a dot printer is rotated up and down with respect to a main frame (base body) using a single connecting shaft. It is movably connected, and when printing, this printer frame is lowered and rotated so that the printer head comes close to the printing surface of the inserted printing paper, and then the dot printer is driven to print to the base. It is configured to print between the platen on the main body side.

In the printing machine constructed as described above, the parallelism of the printer frame with respect to the main frame is deviated unless the parallel accuracy of the shaft hole for the connecting shaft formed in the main frame and the printer frame is increased. As a result, the clearances between the right and left sides of the printer head and the platen are not the same, and as a result, there is a problem that the left and right densities of printed characters are not constant.

However, it is technically very difficult to machine the parallel tolerance of the shaft hole for the connecting shaft of the printer frame and the main frame, and the manufacturing technology is naturally limited. It was almost impossible to make a perfect parallel.

Therefore, mounting holes for connecting shafts formed in both or one of the two frames are formed in a vertically long slot, and after connecting both frames, the mounting position of the connecting shaft is set in the slot. It has been considered that by moving along the printer frame, the parallel state of the printer frame is adjusted to correct the clearance error with the platen.

However, the correcting means for moving the connecting shaft along the elongated hole needs to manually move the connecting shaft and perform fixing work such as screwing the connecting shaft to the moving position. However, the adjustment work is extremely delicate and difficult, and it is necessary to make adjustments based on so-called intuition.
There was a problem that fine adjustment such as 0.1 mm or less could not be performed.

On the other hand, the present applicant first reported that
The parallel part adjusting device of the frame proposed in No. 72628 is
The parallel tolerance of the shaft hole for the connecting shaft of the printer frame and the main frame does not need to be machined so strictly, and the connecting plate can be moved up and down by rotating the adjust plate attached to the main frame up and down using a Phillips screwdriver. It operates to adjust the printer frame up and down, and the gap between the printer head and the platen can be adjusted in parallel.

[0008]

However, in the parallel part adjusting device for a frame according to the above-mentioned application, the adjusting plate attached to the main frame is vertically adjusted by a Phillips screwdriver to adjust the reference position of the main body attaching part. Since the parallelism between the printer head and the platen is adjusted by operating the connecting shaft up and down, the parallelism between the printer head and the platen is lost due to the looseness of the connecting shaft. There was a problem that it could not be adjusted easily.

Therefore, the technical problem of the present invention is to adjust the mounting angle of the printer frame to which the printer is mounted or the base body (main frame) using a Phillips screwdriver without moving the connecting shaft to be the reference. , So that the parallelism between the printer head and the platen can be accurately adjusted.

[0010]

[Means for Solving the Problems] Means taken in the present invention for solving the above technical problems are as follows.

A printer frame having a printer mounted thereon is rotatably attached to a connecting shaft provided on the rear portion of the base body, and when a printing paper is inserted, the printer frame rotates downward and the printer is mounted on the base body side. In a printing machine configured to print with the platen,

(1) The rear one side of the printer frame is formed short so as not to reach the connecting shaft, and the short rear one side is rotatably supported on the side surface of the printer frame via an adjust plate. It is mounted on the connecting shaft so that it can be rotated up and down, and an adjustment hole for inserting the tip of a Phillips screwdriver is provided on the rear side of the printer frame. Also, a protrusion for the projection should be projected, and a tightening screw for fixing the angle-adjusted adjust plate to that position should be attached to either the rear side of the printer frame or the adjust plate.

(2) The rear end of the adjusting plate is provided with a mounting hole for the connecting shaft provided on the rear one side of the printer frame as a stupid hole, and is also rotatably supported on the side surface of the rear one side. The upper part of the printer frame is rotatably attached to the connecting shaft, and an adjusting hole into which the tip of a Phillips screwdriver is inserted is provided on one side of the rear part of the printer frame. The protrusion for adjusting the angle should be projected, and a tightening screw that fixes the angle-adjusting adjust plate at that position should be attached to either the rear side of the printer frame or the adjusting plate.

(3) A bracket for supporting the connecting shaft is projectingly provided at a rear end portion of the base body, and a mounting hole for the connecting shaft provided in the bracket is formed as a stupid hole. The rear end of the adjust plate, which is rotatably supported on one side, is vertically rotatably attached to the above connecting shaft, and an adjusting hole for inserting the tip of a Phillips screwdriver is provided on one side of the base body. , The angle adjustment protrusion protruding from the tip of the adjustment plate is projected in this adjustment hole, and the one side surface of the base body is also provided with a tightening screw for fixing the angle adjusted adjustment plate in that position. Install.

[0015]

The means described in the above (1), (2) and (3) operate as follows.

According to the means described in the above (1), after the tightening screw is loosened to make the adjusting plate rotatable, the tip of the adjusting plate is rotated by inserting a plus driver into the adjusting hole. Since the protrusion engages with the groove of the part, the above adjustment plate rotates up and down, and the mounting angle of the printer frame with respect to the connecting shaft can be adjusted up and down via this adjustment plate, so it can be mounted on the printer frame by this angle adjustment. The distance between the printer head surface and the platen surface can be adjusted in parallel, and after adjustment, tightening the tightening screw again will maintain the parallelism between the printer head and the platen and keep the left and right densities constant. Allows characters to be printed on printing paper.

According to the means described in (2) above, when the adjusting screw is loosened so that the adjusting plate can be turned, and then the Phillips screwdriver is inserted into the adjusting hole and the turning operation is performed, the tip end thereof is rotated. Since the protrusion engages with the groove of the section and the above-mentioned adjusting plate rotates up and down, the mounting angle of the printer frame with respect to the connecting shaft can be adjusted up and down by the amount that the mounting hole is configured as a stupid hole. By adjusting the angle, the distance between the printer head mounted on the printer frame and the platen surface can be adjusted in parallel.After adjustment, tighten the tightening screw again to maintain the parallelism between the printer head and the platen. , It is possible to print characters with constant density on the left and right on printing paper.

According to the means described in the above (3), when the adjusting screw is loosened so that the adjusting plate can be rotated, and then the Phillips screwdriver is inserted into the adjusting hole to rotate the adjusting plate, the tip end thereof is rotated. Since the protrusion engages with the groove of the part and the above-mentioned adjusting plate rotates up and down, the mounting angle of the base body with respect to the connecting shaft can be adjusted up and down by the amount that the mounting hole is configured as a stupid hole. By adjusting the angle, the distance between the platen surface of the base body and the head surface of the printer mounted on the printer frame can be adjusted in parallel.After adjustment, tighten the tightening screw again to make the printer head and platen parallel. It allows you to print characters on the printing paper that have a constant density on the left and right sides.

As described above, the above-mentioned technical problems can be solved by the above-mentioned means and the problems of the above-mentioned conventional techniques can be solved.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the parallelism adjusting device for a frame for a printing machine according to the present invention described above will be described in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view showing the appearance of a printing machine equipped with a parallelism adjusting device for a frame according to the present invention, that is, a time stamp. A time stamped body composed of an upper case body 1A and a lower case body 1B, 1T being the upper and lower case bodies 1A,
An insertion port for printing paper (not shown) opened between 1B, 2
Is a display provided also on the front surface of the upper case body 1A, which also functions as a clock, 3a, 3b, 3c are touch keys for printing and data registration, 4 is a viewing window, and 5 is a slot 1T. A guide plate for guiding one side of the printing paper, 6 is a knob for determining the printing position of the printing paper inserted in the insertion slot 1T, and 1M is a base surface of the lower case body 1B.

2 and 3 are a side view and a plan view showing the internal structure of the time stamp with the above-mentioned upper case body 1A and lower case body 1B removed, and FIG. 2 shows the insertion port 1T closed. Shows the state during printing.

In these drawings, 11 is a base main body (base stand), 10 is a main body frame fixedly mounted on the base main body 11, and 12 is the display unit attached to the tip of the main body frame 10. A mounting frame for 2 (clock part), 13 is a printer frame mounted inside the main body frame 10 so as to be rotatable up and down, and includes mounting pieces 10b, 10b protruding left and right at the rear end of the main body frame 10. Similarly, a mounting piece 13T (see FIG. 3) projecting from one side of the rear end of the printer frame 13 is erected between the brackets 11a, 11a projecting to the left and right of the rear end of the base body 11. It is pivotally supported on the shaft 14.

Reference numeral 30 denotes a printer such as a dot printer mounted on the inner side of the tip portion 13a side of the printer frame 13 described above, and the printer head 30H has a platen 1P provided on the lower side, that is, on the base surface 1M of the base body 11. It is attached in the direction of, and has a mechanism for printing the time, number, etc. on the printing paper inserted into the insertion port 1T.

Further, in the figure, 23 is a cam disk mounted in a gear box (not shown) mounted on the bottom plate on the rear end side of the printer frame 13 near the above-mentioned connecting shaft 14, and 24 is this cam disk. A cam follower attached to the base body 11 side so as to come into contact with the
When the large diameter part is in contact with the cam follower 24,
The tip end 13a side of the printer frame 13 is raised to make the insertion opening 1T wide, but when the small diameter portion of the cam disk 23 is in contact with the cam follower 24 as shown in FIG. The tip portion 13a side is configured to descend to the base surface 1M side of the base body 11.

Reference numeral 13X is a paper holder made of rubber or soft plastic attached to the bottom surface of the printer frame 13 on the side of the tip portion 13a. The paper holder 13X is the tip of the printer frame 13 when the cam disk 23 rotates. A function of pressing the printing paper inserted in the insertion slot 1T against the table surface 1M side from the top when the part 13a side descends as shown in FIG. 2 and maintaining a printing interval for the printer 30 between the sheet and the table surface 1M. It is designed to demonstrate.

Reference numeral 25 denotes a spring stretched between the printer frame 13 and the base body 11 described above. The spring 25 exerts a pulling action of pulling the printer frame 13 downwards at all times, thereby causing the cam disk 23 to move to the cam follower 24.
This printer frame 1 is pressed against the upper surface of
3 has the function of accurately rotating up and down as the cam disk 23 rotates.

In the illustrated embodiment, the cam disk 23 is mounted on the printer frame 13 side and the cam follower 24 is mounted on the base body 11 side. However, even if the mounting position is turned upside down, the same operation as described above is achieved. Because it can be demonstrated
The mounting positions of the cam disk 23 and the cam follower 24 are arbitrary.

Next, the internal structure of the time stamp will be described in more detail with reference to the above-described second and FIG.

In each of the above figures, 29 is a printer 30.
A carriage for mounting the carriage 29S, a guide shaft of the carriage 29, 28 a rack mounted on the carriage 29, 27
Is a pinion that meshes with the rack 28, and 26M is a printer moving motor that rotates the pinion 27. When the printer moving motor 26M rotates the pinion 27 and sends the rack 28, the printer 30 follows the guide shaft 29S. The printer 30 performs a printing operation during this lateral movement and performs printing on the printing paper inserted between the platen 1P and the platen 1P.

Further, 20M is a vertical movement motor for vertically moving the printer frame 13 attached to the gear box, and 21 and 22 are in the gear box for transmitting the rotation of the motor 20M to the cam disk 23. 2 shows a gear mechanism including a drive pinion and a reduction gear provided in the.

The frame parallelism adjusting apparatus according to the present invention is used for a time stamp (printing machine) having the structure described below, and its specific structure is shown in FIG. 2 and FIG. 3 and the description of FIGS. 4 to 6.

FIG. 4 is a partially sectional plan view showing an enlarged view of the structure of the Y-view portion in FIG. 3, that is, the structure of the essential part of the present invention (the structure of claim 1), and FIG. FIG. 6 and FIG. 6 are configuration diagrams explaining the state of the angle adjustment. In these drawings and FIGS. 2 and 3 described above, 13b is formed short so as not to reach the connecting shaft 14 described above. A rear one side portion 15 of the printer frame 13 is an adjust plate rotatably supported on the inner side surface of the one side portion 13 by fitting a shaft 15a into the fitting hole 13e. The rear end portion is attached to the connecting shaft 14 so as to be vertically rotatable.

Reference numeral 10a is an operation hole opened at the rear end of one side of the main body frame 10 described above, and reference numeral 13c is an adjustment hole formed in the surface of the printer frame 13 inside the operation hole 10a. As shown in FIG. 6, a tip portion DR of a Phillips driver is configured to be insertable from the outside through the operation hole 10a. Further, inside the adjustment hole 13c, the tip portion of the adjusting plate 15 described above is provided. The projection 15b for adjusting the angle is formed laterally so as to engage with the groove of the tip portion DR of the inserted plus driver.

Reference numeral 16 denotes a stupid hole 13 in which a screw portion 16a at the tip is bored in the rear one side portion 13b of the printer frame 13.
through the screw hole 15e of the adjusting plate 15
With the tightening screw screwed in, the mounting state (mounting angle) of the adjusting plate 15 to the printer frame 13 can be freely rotated depending on the tightening condition of the tightening screw 16,
It is possible to fix it.

According to the parallelism adjusting device for a frame for a printing machine according to the present invention constructed as described above, after loosening the tightening of the tightening screw 16, the tip portion DR of the plus driver is inserted into the adjusting hole 13c. When this is rotated, the protrusion 15b
The engagement of the adjust plate 15 causes the entire adjust plate 15 to rotate upward or downward with the connecting shaft 14 as a fulcrum.
The rear one side portion 13b of the printer frame 13 supported by the adjusting plate 15 by a is attached with a tightening screw 1
Since the angle can be adjusted by operating upward or downward with respect to the connecting shaft 14 within the range of the dumb hole 13d for 6, the printer 30 mounted on the printer frame 13 by this angle adjustment.
The parallelism between the head 30H and the platen 1P can be adjusted.

When the angle adjustment is completed in this way, the tightening screw 16 is tightened again to integrate the adjusting plate 15 and the printer frame 13, and the parallelism between the surface of the head 30H and the surface of the platen 1P is maintained. The subsequent printing can be performed with.

FIG. 7 is a partial cross-sectional plan view showing the structure of another embodiment of the present invention described above. In this embodiment, a shaft 13f is provided on the inner surface of the rear one side portion 13b of the printer frame 13. And project the shaft 13f to adjust plate 1
5, the adjusting plate 15 is fitted into the fitting hole 15c of the printer frame 13 to the rear one side portion 13b of the printer frame 13.
The screw portion 16a of the tightening screw 16 is screwed into the screw hole 13g provided in the rear one side portion 13b of the printer frame 13 from the inside of the adjusting plate 15 through the fool hole 15d. The structure is such that it can be tightened freely and can exert the same action and effect as the present invention shown in FIGS. 2 to 6.

FIG. 8 is a partial cross-sectional plan view for explaining the structure of the other embodiment of the present invention (the structure of claim 2). In this embodiment, the rear one side of the printer frame 13 is also shown. 13T is extended to be attached to the connecting shaft 14 so as to be rotatable up and down, and its mounting hole is formed as a stupid hole 13S, and the root end is also attached to the connecting shaft 14 so as to be rotatable vertically. Shaft 1 protruding from the inner surface of
5a to the rear one side portion 13T of the printer frame 13
Is rotatably fitted into a fitting hole 13h formed in the side surface of
Moreover, the screw portion 16a of the tightening screw 16 is screwed into the screw hole 13g on the printer frame 13 side through the back hole 15d of the adjusting plate 15.

According to the configuration shown in FIG. 8, when the tip portion DR of the Phillips screwdriver is inserted into the adjustment hole 13c after loosening the fastening screw 16 and the tip portion DR is pivotally operated, the engagement of the protrusion 15b is stopped. Depending on the combination, the entire adjust plate 15 uses the connecting shaft 14 as a fulcrum, and is a fool hole 15 for the tightening screw 16.
Since the shaft 15a is rotated upward or downward by an amount d, the rear one side portion 13T of the printer frame 13 is rotated upward or downward with respect to the connecting shaft 14 within the range of the fool hole 13S to adjust the angle. From the head 30 of the printer 30 mounted on the printer frame 13 by this angle adjustment.
The parallelism between the plane H and the platen 1P can be adjusted, and the parallelism can be maintained by tightening the tightening screw 16.

In all the embodiments of the present invention shown in FIGS. 2 to 8 described above, the parallelism between the printer head 30H and the platen 1P is adjusted by adjusting the mounting angle of the printer frame 13 with respect to the connecting shaft 14. According to the embodiment (Claim 3) of the present invention shown in FIG. 9, the mounting angle of the base body 11 with respect to the connecting shaft 14 is adjusted to adjust the parallelism. It is configured.

That is, in FIG. 9, the printer frame 13
The rear one side portion 13T is a mounting piece 10 of the body frame 10.
Although it is attached to the connecting shaft 14 together with b so as to be vertically rotatable, the mounting hole provided in the bracket 11a of the base body 11 supporting the connecting shaft 14 is a stupid hole 11e.

On the outer surface of the rear portion of the base body 11, an adjusting plate 15 having a rear end portion rotatably attached to the connecting shaft 14 is provided. The adjusting plate 15 rotates the shaft 15a into the fitting hole 11c. The threaded portion 16a of the tightening screw 16 is movably fitted in the base body 11 through the fool hole 15d formed in the adjusting plate 15.
While being screwed into a screw hole 11d formed on the outer side surface of the base body 11, the outer side surface of the base body 11 is also provided with an adjustment hole 11b for inserting the tip portion DR of the plus driver.

According to the structure shown in FIG. 9, when the tip DR of the Phillips screwdriver is inserted into the adjustment hole 11b after loosening the tightening screw 16 and then the screw is rotated, the protrusion 15b is engaged. Depending on the combination, the entire adjust plate 15 rotates upward or downward within the fool hole 15d,
Along with this, the shaft 15a causes one side of the base body 11 to be
Since it rotates upward or downward within the range of 1e, the connecting shaft 1
The parallelism between the surface of the printer head 30H and the platen 1P can be adjusted by adjusting the mounting angle of the base main body 11 with respect to 4, and the parallelism can be maintained by tightening the tightening screw 16.

[0045]

Therefore, according to the parallelism adjusting device for a frame for a printing machine according to the present invention, the angle of the adjusting plate is adjusted by a Phillips screwdriver to adjust the mounting angle of the printer arm or the base body with respect to the connecting shaft. Therefore, the parallelism between the printer head and the platen can be adjusted.However, in the present invention, the printer arm equipped with the printer or the platen can be installed without operating the connecting shaft that serves as a reference for angle adjustment. Since the parallelism between the printer head and the platen is adjusted by adjusting the mounting angle of the provided base body, the advantage that the parallelism can be accurately adjusted without loss can be exhibited. Since it does not need to raise the processing precision more than necessary, it is easy to manufacture and economical with cost reduction. What are points coupled with, is suitable for Makoto was carried to the printing machine such as a time stamp as shown.

[Brief description of the drawings]

FIG. 1 is a perspective view illustrating an appearance of a time stamp including a frame parallelism adjusting device according to the present invention.

FIG. 2 is a side view showing an internal configuration with an outer case removed.

FIG. 3 is a plan view showing the internal structure of the same with the outer case removed.

FIG. 4 is a partial cross-sectional plan view illustrating the configuration of the main part of the present invention.

FIG. 5 is a side view of the same.

FIG. 6 is a configuration diagram illustrating an operating state of an adjusting plate by a Phillips screwdriver.

FIG. 7 is a partial cross-sectional plan view illustrating the configuration of another embodiment of the present invention.

FIG. 8 is a partial cross-sectional plan view illustrating the configuration of a main part of the present invention described in claim 2.

FIG. 9 is a partial cross-sectional plan view illustrating the configuration of a main part of the present invention described in claim 3.

[Explanation of symbols]

 1P Platen 11 Base body 11a Bracket 11b Adjusting hole 11c Fitting hole 11d Screw hole 11e Facsimile hole 13 Printer frame 13b, 13T Rear one side part 13c Adjusting hole 13d Facsimile hole 13e Fitting hole 13f Shaft 13g Screw hole 13h Fitting hole 13S Stupid hole 14 Connecting shaft 15 Adjust plate 15a Shaft 15b Protrusion 15c Fitting hole 15d Stupid hole 15e Screw hole 30 Printer 30H Printer head DR Plus driver tip

Claims (3)

[Claims] 1. A printer frame having a printer mounted thereon is rotatably mounted on a connecting shaft provided at a rear portion of a base body, and when a printing paper is inserted, the printer frame rotates downward to cause the printer to be a base body. In a printer configured to perform printing with the platen on the side, the rear one side of the printer frame is formed short so as not to reach the connecting shaft, and the short rear one side is formed. It is vertically rotatably attached to the connecting shaft through an adjust plate that is rotatably supported on the side surface, and an adjusting hole for inserting the tip of a Phillips screwdriver is provided on one rear side of the printer frame. A projection for adjusting the angle provided on the tip of the adjusting plate, and similarly, on the rear side of the printer frame or on the adjusting plate. The or Re, the angle adjusted adjusting plate parallelism adjustment device for a printing machine frame, characterized in that attaching the fastening screws for fixing in position. 2. A printer frame having a printer mounted thereon is vertically rotatably attached to a connecting shaft provided at a rear portion of a base body, and when a printing paper is inserted, the printer frame rotates downward and the printer is the base body. In the printer configured to perform printing with the platen on the side, a mounting hole for the connecting shaft provided on the rear one side of the printer frame is formed as a stupid hole. The rear end of the adjust plate, which is rotatably supported on the side surface, is vertically rotatably attached to the connecting shaft, and an adjusting hole for inserting the tip of a Phillips screwdriver is provided on the rear side of the printer frame. In this adjustment hole, a projection for adjusting the angle provided on the tip of the adjusting plate is projected, and similarly, on the rear side of the printer frame or on the adjusting plate. Parallelism adjustment device for a printing machine frame, characterized in that attaching the fastening screws for fixing the angle adjusted adjusting plate in position. 3. A printer frame having a printer mounted thereon is rotatably mounted on a connecting shaft provided at a rear portion of a base body, and when a printing paper is inserted, the printer frame rotates downward and the printer is mounted on the base body. In a printer configured to perform printing with the platen on the side, a bracket for supporting the connecting shaft is projectingly provided at the rear end of the base body, and a bracket for the connecting shaft provided on the bracket is provided. The mounting hole is formed as a stupid hole, and the rear end of an adjust plate rotatably supported on one side surface of the base body is rotatably attached to the connecting shaft, and An adjustment hole for inserting the tip of a Phillips screwdriver is provided on the side surface, and a projection for adjusting the angle that is projected from the tip of the adjustment plate is projected in this adjustment hole. On the surface, parallelism adjustment device for a printing machine frame, characterized in that attaching the fastening screw to fix the adjustment plates angle adjustment in its position.