CN201728902U

CN201728902U - Thermal printer

Info

Publication number: CN201728902U
Application number: CN2010202052582U
Authority: CN
Inventors: 蒋文柏; 林志敏
Original assignee: NINGBO JINGXIN SCIENCE AND TECHNOLOGY Co Ltd
Current assignee: NINGBO JINGXIN SCIENCE AND TECHNOLOGY Co Ltd
Priority date: 2010-05-25
Filing date: 2010-05-25
Publication date: 2011-02-02
Anticipated expiration: 2020-05-25

Abstract

The utility model relates to a thermal printer which comprises a main frame, as well as a motor, a transmission gear component, a rubber roll component, and a printing head component which are arranged on the main frame, wherein the power input end of the transmission gear component is meshed with a driving output gear of the motor, the power output end is meshed with a rubber roll gear of the rubber roll component, the printing head component is arranged near the rubber roll component, and the thermal printer is characterized in that the main frame comprises a metal base frame molded by die casting and a spring piece arranged on the metal base frame, and the transmission gear component is covered on one side of the main frame through the gear made of plastic material. Compared with the prior art, the thermal printer has the advantages that the metal frame is integrally molded, thereby having good strength and rigidity and providing convenience for ensuring the precision and the accurate mounting in the position; the optimal design of the transmission gear component is conductive to reduce the cost; and the comprehensive cost of the whole structure is reduced, and the thermal printer can further ensure the strength at a certain level.

Description

A kind of thermal printer

Technical field

The utility model relates to a kind of thermal printer.

Background technology

The thermal printing movement mainly contains two kinds of compound modes now: a kind ofly be made up of overall plastic glue body frame, motor, gear train, rubber roll assembly, print components and spring pressuring plate, because spring pressuring plate and printing head support part all are positioned on the plastic cement body frame, its plastic cement body frame is easy to wear, and service life is shorter; The another kind of body frame of making for the all-metal foundry goods (comprise gear cap etc. all be metal casting), though advantage not easy to wear, long service life that this metal body frame has, but its manufacturing cost is higher, makes the whole cost of movement improve, and metal body frame having relatively high expectations to mould and die accuracy.Disclosed document can referenced patent number be Chinese utility model patent " thermal printing the movement " (Granted publication number: CN201283696Y), can also referenced patent number be Chinese utility model patent " thermal printing movement the pedestal " (Granted publication number: CN201120777Y) of ZL200720008444.5 of ZL200820123188.9.

The utility model content

Technical problem to be solved in the utility model is to provide at the above-mentioned state of the art that a kind of cost is lower, the thermal printer of long service life.

The utility model solves the problems of the technologies described above the technical scheme that is adopted: a kind of thermal printer, comprise body frame and be located at motor on the body frame, driving gear component, the rubber roll assembly, print head assembly, the active output gear engagement of the power intake of driving gear component and motor, the rubber roll gears engaged of clutch end and rubber roll assembly, print head assembly is provided with near the rubber roll assembly, it is characterized in that described body frame comprises the metal pedestal of die cast and is located at shell fragment on the metal pedestal, described driving gear component is located at a side of described body frame by the gear cap of a plastic material.

Further, bending of described shell fragment two ends and centre are provided with an installing hole, and accordingly, described metal pedestal is provided with a screw, and a trip bolt is fixedly set in by aforesaid installing hole and makes the shell fragment two ends keep certain elastic stage in the aforesaid screw.

As preferably, described metal pedestal is provided with a paper-ripping cutter along the exit slot length direction.

Further, described rubber roll assembly comprises rubber roll, axle sleeve and described rubber roll gear, aforesaid rubber roll is provided with a turning cylinder along its length, the aforementioned axis cover is sheathed on the turning cylinder two ends and is arranged in the axial trough of described metal pedestal, and described rubber roll gear then is located at turning cylinder one side of rubber roll.

Further, described driving gear component comprises gear shaft and a plurality of gear that is placed on the aforesaid gears axle with a plurality of metal pedestal one die casts.

Be convenient to assembling, described print head assembly has a gripper shoe, and these gripper shoe two ends have boss, and accordingly, described metal pedestal both sides have the mounting groove for aforementioned boss assembling.

Further, also be provided with a paper-finding frame on the described metal pedestal, the bottom of this paper-finding frame has projection, and accordingly, described metal pedestal upper surface has the stopper slot that cooperates plug-in mounting with aforementioned projection.

Compared with prior art, advantage of the present utility model is: the metal pedestal is one-body molded, has good intensity and rigidity, is beneficial to guarantee that precision and position install accurately, and the decision design of driving gear component is beneficial to and reduces cost; The overall structure integrated cost reduces, and intensity guarantees at certain level.

Description of drawings

Fig. 1 is the example structure schematic diagram.

Fig. 2 is the rearview of Fig. 1.

Fig. 3 is the decomposition assembling figure of Fig. 2.

The specific embodiment

Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.

As Fig. 1, Fig. 2 and shown in Figure 3, the thermal printer in the present embodiment comprises body frame 4 and is located at motor 1, driving gear component 2, rubber roll assembly 3, print head assembly 5 and paper-finding frame 7 on the body frame 4.

Body frame 4 comprises the metal pedestal 42 of die cast and is located at shell fragment 41 on the metal pedestal 42, shell fragment 41 forms by metal stamping, bending of shell fragment 41 two ends and centre are provided with installing hole 45, metal pedestal 42 is provided with screw 46, and trip bolt 9 is fixedly set in by installing hole 45 and makes shell fragment 41 two ends keep certain elastic stage in the screw 46.Metal pedestal 42 is provided with a paper-ripping cutter 6 along the exit slot length direction.

Rubber roll assembly 3 comprises rubber roll 31, axle sleeve 32 and rubber roll gear 33, and rubber roll 31 is provided with a turning cylinder 34 along its length, and axle sleeve 32 is sheathed on turning cylinder 34 two ends and is arranged in the axial trough 44 of metal pedestal, and rubber roll gear 33 is located at turning cylinder 34 1 sides of rubber roll.

Driving gear component 2 is located at a side of body frame by the gear cap 8 of a plastic material, gear cap 8 usefulness trip bolts 81 are fixing with metal pedestal 42, driving gear component 2 comprises and a plurality of gear shafts 22 and a plurality of gear 21 that is placed on the gear shaft 22, gear shaft 22 and metal pedestal 42 one die casts.Active output gear 11 engagements of the power intake of driving gear component 2 and motor, clutch end and 33 engagements of rubber roll gear, print head assembly 5 is provided with near rubber roll assembly 3, print head assembly 3 has a gripper shoe 5a, this gripper shoe 5a two ends have boss 51, accordingly, metal pedestal 42 both sides have the mounting groove 47 for boss 51 assemblings.The bottom of paper-finding frame 7 has projection 71, and accordingly, metal pedestal 42 upper surfaces have the stopper slot 43 that cooperates plug-in mounting with projection 71.

Claims

1. thermal printer, comprise body frame and be located at motor, driving gear component, rubber roll assembly, print head assembly on the body frame, the active output gear engagement of the power intake of driving gear component and motor, the rubber roll gears engaged of clutch end and rubber roll assembly, print head assembly is provided with near the rubber roll assembly, it is characterized in that described body frame comprises the metal pedestal of die cast and is located at shell fragment on the metal pedestal, described driving gear component is located at a side of described body frame by the gear cap of a plastic material.

2. thermal printer according to claim 1, it is characterized in that bending of described shell fragment two ends and centre are provided with an installing hole, accordingly, described metal pedestal is provided with a screw, and a trip bolt is fixedly set in by aforesaid installing hole and makes the shell fragment two ends keep certain elastic stage in the aforesaid screw.

3. thermal printer according to claim 1 is characterized in that described metal pedestal is provided with a paper-ripping cutter along the exit slot length direction.

4. according to the described thermal printer of arbitrary claim in the claim 1～3, it is characterized in that described rubber roll assembly comprises rubber roll, axle sleeve and described rubber roll gear, aforesaid rubber roll is provided with a turning cylinder along its length, the aforementioned axis cover is sheathed on the turning cylinder two ends and is arranged in the axial trough of described metal pedestal, and described rubber roll gear then is located at turning cylinder one side of rubber roll.

5. according to the described thermal printer of arbitrary claim in the claim 1～3, it is characterized in that described driving gear component comprises gear shaft and a plurality of gear that is placed on the aforesaid gears axle with a plurality of metal pedestal one die casts.

6. according to the described thermal printer of arbitrary claim in the claim 1～3, it is characterized in that described print head assembly has a gripper shoe, these gripper shoe two ends have boss, and accordingly, described metal pedestal both sides have the mounting groove for aforementioned boss assembling.

7. according to the described thermal printer of arbitrary claim in the claim 1～3, it is characterized in that also being provided with a paper-finding frame on the described metal pedestal, the bottom of this paper-finding frame has projection, and accordingly, described metal pedestal upper surface has the stopper slot that cooperates plug-in mounting with aforementioned projection.