CN101898459A

CN101898459A - Rolling type electric printing head device

Info

Publication number: CN101898459A
Application number: CN 201010226938
Authority: CN
Inventors: 张君; 廖林清; 屈翔; 杨翔宇; 王伟; 蔺朝莉
Original assignee: Chongqing University of Technology
Current assignee: Chongqing University of Technology
Priority date: 2010-07-15
Filing date: 2010-07-15
Publication date: 2010-12-01
Anticipated expiration: 2030-07-15
Also published as: CN101898459B

Abstract

The invention discloses a rolling type electric printing head device, comprising a rotating disc driven by a motor, a printer head casing, a printing dial, a printing needle and a return spring, wherein a plurality of rollable rollers are arranged on the circumferential surface of the rotating disc; the printing head casing is positioned under the rotating disc; the printing dial can be rotatably arranged in the printing head casing; rollable balls are arranged at the top of the printing dial; the needle point end of the printing needle vertically penetrates out of the bottom of the printing head casing and is in clearance fit with the bottom of the printing head casing; the other end of the printing needle is fixed on the printing dial; the return spring is arranged between the printing dial and the printing head casing; and the roll balls contact with the rollers and the base circular surface of the rotating disc under the action of the return spring. In the invention, the roll balls on the printing dial are pushed by the rollers which are uniformly distributed on the rotating disc to drive the printing dial to slide up and down and realize the reciprocation of the printing needle. The invention has the advantages of simple integral structure, low noise and lower use cost, and in addition, the frictions between the roll balls and the roller and between the roll balls and the rotating disc are small and the wear is low, so that the service life of the whole device is prolonged.

Description

Rolling type electric printing head device

Technical field

The present invention relates to a kind of coder or mark machine, relate in particular to the rolling type electric printing head device of a kind of coder or mark machine.

Background technology

Coder or mark machine are gone up applicable to various polybags, plastic foil, aluminium foil, trade mark, carton, leather, certificate, metallic article, metal tag, plastic products etc. and are printed date, valid expiration date, lot number, weight, quantity, price, size, composition, sale code area Field Number etc.

In the prior art, the coder of beating code labeling of metallic article and metal tag or the printhead of mark machine are installed on the support that is driven by x, y, z axle servo control mechanism, printhead mainly contains two big classes: a class is pneumatic printhead; Another kind of is the laser printing head.Pneumatic printhead mainly relies on the compressed air-driven print needle to move up and down to realize beating sign indicating number, and not only complex structure, and pneumatic printhead and matched air compressor machine produce very big noise when work, surrounding enviroment have been caused noise pollution.For the laser printing head, its printing degree of depth is not enough, and higher to the surface requirements of print position, causes cost higher.Defective based on above-mentioned two class printheads exist makes the scope of application of coder or mark machine be very restricted.

Summary of the invention

At weak point of the prior art, the invention provides a kind of simple in structurely, it is little to rub, the rolling type electric printing head device that noise is low and more practical.

Rolling type electric printing head device provided by the invention comprises motor, motor-driven running roller mechanism and head mechanism;

Described running roller mechanism comprises rolling disc, roller and rolling disc shell, uniform several roller mounting grooves on the periphery of described rolling disc, described roller is installed in the roller mounting groove by the rolling disc shell is rotating, and the axis of roller is parallel with the axis of rolling disc;

Described head mechanism comprises printhead shell, ball, ball baffle plate, prints dials, print needle and return spring; Described printhead shell is fixedly installed on the below of rolling disc; Described printing dials is arranged in the printhead shell and vertically is slidingly matched with the inner surface of printhead shell, the top of printing dials is provided with the ball mounting groove, described ball baffle plate is installed in to be printed on the dials, ball is rotatable to be placed in the ball mounting groove, and the surface portion of described ball stretches out the ball baffle plate; Described print needle vertically is arranged in the printhead shell, the needle tip of print needle pass downwards the printhead shell the bottom and with its matched in clearance, the other end is fixedly installed on to be printed on the dials; Described return spring is arranged between the bottom of printing dials and printhead shell, and return spring applies prestressing force upwards to printing dials; Ball contacts with the cylindrical of rolling disc and the roll surface of roller under the prestressing force effect.

Further, described return spring is arranged in the printhead shell, and is enclosed within outside the print needle.

Further, also comprise the printhead connecting plate, described printhead connecting plate is installed on the support that is driven by x, the y of mark machine or coder, z axle servo control mechanism, and the middle part of printhead connecting plate vertically is provided with screwed hole, and described printhead shell screws in screwed hole by threaded engagement.

Compared with prior art, rolling type electric printing head device of the present invention has following advantage:

1, the present invention adopts the motor-driven rolling disc, utilize the ball on the roller promotion printing dials uniform on the periphery of rolling disc, the printing dials that drives in the printhead shell slides up and down, thereby realize that print needle moves back and forth, total is simple, and noise is little, uses more environmental protection, and the surface requirements to the print position is not high, and use cost is lower.

2, uniform several rollers on the periphery of rolling disc of the present invention are printed on the dials ball are installed, in entire work process, all be to roll to cooperate between the roll surface of ball and roller and the cylindrical of rolling disc, it is little to rub, and it is low to wear and tear, the service life of having improved whole device.

3, during the driven by motor turn disc, several rollers on the rolling disc are periodic fits with the ball rolling of printing on the dials, prints dials and makes the constant amplitude up-down vibration in the enclosure, and regularly the roller number is many more at motor speed one, printing precision is high more, and efficient is high more.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is the right view of Fig. 1.

In the accompanying drawing, 1-motor; 2-rolling disc; 3-roller; 4-rolling disc shell; 5-printhead shell; 6-ball; 7-ball baffle plate; 8-printing dials; 9-print needle; 10-return spring; 11-printhead connecting plate; 12-support; 13-position detecting device.

The specific embodiment

Below in conjunction with the drawings and specific embodiments the present invention is done explanation in further detail.

Fig. 1 is a structural representation of the present invention, and Fig. 2 is the right view of Fig. 1, as shown in the figure.Rolling type electric printing head device comprises running roller mechanism and the head mechanism that motor 1, motor 1 drive.Motor 1 is installed in the top of the support 12 that is driven by x, the y of coder or mark machine, z axle servo control mechanism by bolt.

Running roller mechanism comprises rolling disc 2, roller 3 and rolling disc shell 4.Rolling disc 2 tightly is enclosed within on the output shaft of motor 1 by flat key.Uniform several roller mounting grooves on the periphery of rolling disc 2 (ten roller mounting grooves draw in the accompanying drawing), roller 3 is by rolling disc shell 4 rotating being installed in the roller mounting groove, and the axis of roller 3 is parallel with the axis of rolling disc 2.

Head mechanism comprises printhead shell 5, ball 6, ball baffle plate 7, prints dials 8, print needle 9, return spring 10 and printhead connecting plate 11.Printhead connecting plate 11 is installed on the support 12 by bolt, and the middle part of printhead connecting plate 11 vertically is provided with screwed hole, and the cylindrical of printhead shell 5 is provided with outer bolt, and printhead shell 5 screws in the screwed hole of printhead connecting plate 11.The top of printhead shell 5 is uncovered structure, and is positioned at the vertical below of rolling disc 2.Print that dials 8 is arranged in the printhead shell 5 and vertically be slidingly matched with the inner surface of printhead shell 5, the top of printing dials 8 is provided with the ball mounting groove, ball baffle plate 7 is installed in to be printed on the dials 8, ball 6 rotatable being placed in the ball mounting groove, the surface portion of ball 6 stretches out ball baffle plate 7.Print needle 9 vertically is arranged in the printhead shell 5, the needle tip of print needle 9 pass downwards printhead shell 5 the bottom and with its matched in clearance, the other end is fixedly installed on to be printed on the dials 8.Return spring 10 is arranged in the printhead shell 5, and is enclosed within outside the print needle 9, and an end of return spring 10 is pressed in the bottom of printing dials 8, and the other end is pressed in the bottom of

printhead shell

5, and 10 pairs of return springs are printed dials 8 and applied prestressing force upwards.Under the prestressing force effect, ball 6 contacts with the cylindrical of rolling disc 2 and the roll surface of roller 3.

On the opposite side of support 12 and rolling disc 2, be respectively equipped with and detect roller 3 initial low levels or high-order position detecting device 13, be that position detecting device 13 is used to detect print needle 9 and whether is in highest order or lowest order in vertical direction, system defines z axle reference position with this and prints the degree of depth with control.

Support 12 and the rolling type electric printing head device that is installed on the support 12 can be regulated its height by z axle servo control mechanism.When motor 1 drove rolling disc 2 and rotates, several uniform rollers 3 rolled and drive the ball of printing on the dials 8 on the rolling disc 2, thereby realizing driving prints dials 8 and move up and down.Printing the travel frequency of dials 8 can regulate by the number of the roller 3 of setting on the rolling disc 2, also can print the operating frequency that dials 8 moves up and down thereby regulate between the output shaft of motor 1 and rolling disc 2 by the rotary speed that speed increaser or decelerator are regulated rolling disc 2 is set.

Explanation is at last, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement technical scheme of the present invention, and not breaking away from the aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.

Claims

1. a rolling type electric printing head device is characterized in that: comprise running roller mechanism and head mechanism that motor (1), motor (1) drive;

Described running roller mechanism comprises rolling disc (2), roller (3) and rolling disc shell (4), uniform several roller mounting grooves on the periphery of described rolling disc (2), described roller (3) is installed in the roller mounting groove by rolling disc shell (4) is rotating, and the axis of roller (3) is parallel with the axis of rolling disc (2);

Described head mechanism comprises printhead shell (5), ball (6), ball baffle plate (7), prints dials (8), print needle (9) and return spring (10); Described printhead shell (5) is fixedly installed on the below of rolling disc (2); Described printing dials (8) is arranged in the printhead shell (5) and vertically is slidingly matched with the inner surface of printhead shell (5), the top of printing dials (8) is provided with the ball mounting groove, described ball baffle plate (7) is installed in to be printed on the dials (8), ball (6) is rotatable to be placed in the ball mounting groove, and the surface portion of described ball (6) stretches out ball baffle plate (7); Described print needle (9) vertically is arranged in the printhead shell (5), the needle tip of print needle (9) pass downwards printhead shell (5) the bottom and with its matched in clearance, the other end is fixedly installed on to be printed on the dials (8); Described return spring (10) is arranged between the bottom of printing dials (8) and printhead shell (5), and return spring (10) applies prestressing force upwards to printing dials (8); Ball under the prestressing force effect (6) contacts with the cylindrical of rolling disc (2) and the roll surface of roller.

2. rolling type electric printing head device according to claim 1 is characterized in that: described return spring (10) is arranged in the printhead shell (5), and is enclosed within outside the print needle (9).

3. the rolling type electric printing head device of stating according to claim 1 or 2, it is characterized in that: also comprise printhead connecting plate (11), described printhead connecting plate (11) is installed on the support (12) that is driven by x, the y of mark machine or coder, z axle servo control mechanism, the middle part of printhead connecting plate (11) vertically is provided with screwed hole, and described printhead shell (5) screws in screwed hole by threaded engagement.