Print needle driving structure provided with oil storage tank

Abstract

The invention discloses a print needle driving structure provided with an oil storage tank. The print needle driving structure comprises a magnet yoke; the upper end faces of first and second leg parts of the magnet yoke are respectively provided with a fulcrum supporting plate and intertwined by coils; the coils are connected with a power supply; an armature is arranged at an upper position of the magnet yoke; a first supporting leg extends out of one end of the armature; a first pivoting point is arranged on the first supporting leg; the other end of the armature is connected with a print needle; the armature is also provided with a second supporting leg corresponding to the second leg part of the magnet yoke; the armature between the second supporting leg and the print needle is provided with a reset pressure spring; the first pivoting point is hinged with the fulcrum supporting plate; the oil storage tank is arranged on the first leg part of the magnet yoke and covered by the fulcrum supporting plate; the oil in the oil storage tank is slowly supplied to the first pivoting point by capillary phenomenon and the effect of surface tension; a groove for accommodating the first supporting leg is formed in the fulcrum supporting plate. The print needle driving structure disclosed by the invention effectively reduces abrasion, increases the withdrawing frequency of the print needle and the like.

Description

technical field [0001] The invention relates to a driving structure of a dot-type printing needle, in particular to a driving structure of a printing needle with an oil storage tank. Background technique [0002] Dot matrix printers still serve some special industries because of their unique differences compared to inkjet and laser printers. The needle ejection and retraction action of the printing needle on the dot matrix printer is the key to correct printing. refer to figure 1 As mentioned above, the printing needle driving device of the needle type printing head includes a magnetic yoke 1 in a U-shaped structure, and a fulcrum support plate 2 made of magnetic material is arranged on the upper end surface of the first foot portion 11 of the magnetic yoke 1, and the magnetic yoke A coil 3 is wound on the second foot 12 of the yoke 1, and the coil 3 is connected to a power source. An armature 4 is arranged above the yoke 1. A first leg 41 protrudes from one end of the arm...

AI Technical Summary

Problems solved by technology

However, in this structure, since the armature swings around the first pivot point 5, there must be contact friction at the position of the first pivot point. The driving device of the type printing needle can allow the printing needle to go out 200 to 300 million times. After reaching this number, the position of the first pivot point will be severely worn, which will easily have a great impact on the printing needle's going out and closing down, resulting in printing The force of the needle is not stable enough, which will affect the printing quality, so the corresponding parts must be replaced

For some special industries, due to the large amount of printing, it may be necessary to replace related parts frequently, which will bring some inconvenience to users and increase the maintenance and replacement costs of users.

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