JPS6217255Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a conveying device for conveying a print head in a printing device.

(Prior Art) Conventionally, this conveying device has been guided by two guide columns to move in the left and right direction, but there are some in which rollers are connected to each of these guide columns from two or three sides. Various other methods have been proposed.

(Problems to be Solved by the Invention) However, in all of the above conventional techniques, the clearance between the conveying device and the guide column is reduced as much as possible to eliminate vibration of the conveying device. For this reason, if the guide column is bent even slightly, the transition of the conventional conveying device will lack smoothness.Furthermore, if there is dust etc. stuck between the print head and the platen, cleaning the print head or cleaning the ink ribbon will be difficult. The drawback was that it was difficult to load.

(Means for solving the problem) The feature of the present invention is that two guide columns are provided in parallel, and one of the guide columns penetrates the carriage, making the carriage movable. The carriage has a contact portion that is in contact with the other guide column, and an elastic plate is rotatably supported on the carriage, and the elastic plate elastically contacts the other guide column by a spring force. It cooperates with the contact portion to slidably hold the other guide column.

(Function) Normally, the carriage of the conveying device is guided by two guide columns and slides left and right, but when loading an ink ribbon, for example, if you push the conveying device with your fingertip in the direction away from the platen. , the conveying device rotates about one guide column against the spring force biasing the elastic plate. Therefore, the space between the printing head and the platen is opened to facilitate loading of the ink ribbon. After the ribbon loading operation is completed, when the operator releases his/her hand, the conveying device returns to its original position due to the spring force.

(Example) An example of the present invention will be described below with reference to the drawings.

In FIG. 1, guide columns 3 and 4 are provided in parallel between both side plates 1 and 2 of a printing device A, and a conveyance device B is attached to these guide columns so as to be slidable in the left and right direction. A printing head (not shown) is provided at the top of this conveyance device B, and printing paper and a ribbon are interposed between it and the platen 5, and it moves from side to side when printing is performed.

By the way, as shown in the second figure, the conveying device B has a guide hole 7 provided in its carriage 6, through which one of the guide columns 3 passes. A contact portion 8 is integrally formed on the carriage 6.
It is in contact with the other guide column 4.

In addition, an elastic plate 1 is connected to the carriage 6 via a hinge 9.
0 is rotatably attached, and the other ends of springs 11, 11, which have one end hooked to a carriage, are hooked to this elastic plate. Therefore, the elastic plate 10 comes into elastic contact with the guide column at a position facing the contact portion 8 and the guide column 4, and the elastic plate cooperates with the contact portion to sandwich the guide column. .

Normally, the conveyance device B is guided by the two guide columns 3 and 4 and slides in the left and right direction, but if, for example, dust accumulates between the print head and the platen 5 or an ink ribbon is loaded, When the conveyance device is pushed away from the platen with a fingertip, the elastic plate 10 swings around the hinge 9 against the spring force of the spring 11, so that the conveyance device itself moves around the one guide column 3. It rotates as shown in FIG. 2 by the chain line. Therefore, the space between the print head and the platen 5 can be opened to facilitate cleaning and loading of the ink ribbon. After cleaning and loading the ribbon, when you release your hand, the conveyor B will move to spring 1.
It returns to its original position by the force of 1.

(Effects of the Invention) As described above, according to the present invention, since the conveying device is rotatable around one guide column, cleaning of the printing head etc. can be performed extremely easily. In addition, since only one of the two guide columns, which rotatably receives the conveyance device, needs to be machined to have its straightness with high accuracy, manufacturing costs are reduced, and even if the other guide column is slightly warped, the conveyance device can be conveyed even if the other guide column is slightly warped. Smooth movement of the device is not impaired.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a perspective view of a printing device, and FIG. 2 is a partially cutaway front view. A... Printing device, B... Conveying device, 3, 4...
Guide column, 6...Carriage, 8...Contact part, 1
0...Elastic plate, 11...Spring.

Claims (1)

[Scope of Claim for Utility Model Registration] Two guide columns installed in parallel, and a movable carriage having a contact portion through which one of the guide columns passes through and comes into contact with the other guide column. , an elastic contact plate rotatably supported by the carriage, elastically contacting the other guide column by a spring force, and cooperating with the contact portion to slidably sandwich the guide column. A conveying device in a printing device characterized by: