CN111806096A

CN111806096A - Thermal printer head device

Info

Publication number: CN111806096A
Application number: CN202010870546.8A
Authority: CN
Inventors: 项勇
Original assignee: Anhui Ningzhi Electronic Technology Co ltd
Current assignee: Anhui Ningzhi Electronic Technology Co ltd
Priority date: 2020-08-26
Filing date: 2020-08-26
Publication date: 2020-10-23

Abstract

The invention discloses a thermal printer head device, comprising: the paper width limiting component is arranged on the side plate; the printing head assembly, the paper width limiting assembly, the roller and the side plate are all sleeved on a bottom plate assembly shaft, the paper stripping V piece and the printing roller are installed between the bottom plate and the side plate, and the gear is installed on the printing roller shaft; the paper feed sensor is installed on the bottom plate. The printer head device is designed into a replaceable whole, so that the strength and the matching precision of the head part are enhanced, and the printing quality is effectively improved; the device can be directly used in other application scenes, and can reduce the design risk of a new product, improve the design efficiency, and improve the reliability and the design quality of the product; meanwhile, the investment cost and the management cost of the mold of the company are reduced. The invention has the characteristics of simple and reliable structure, low cost, simple installation and maintenance and the like.

Description

Thermal printer head device

Technical Field

The invention relates to a head device of a thermal printer.

Background

With the acceleration of the informatization construction step of China, the service levels of industries such as commerce/retail, finance, communication, transportation and the like are continuously improved, the demand of thermal label printing products is rapidly increased, but the existing printers in the market generally have the defects of complex structure, high cost, difficult maintenance and the like.

Disclosure of Invention

The invention aims to provide a thermal printer head device which is modularized, simple in structure, low in cost and easy to maintain.

In order to solve the technical problems, the invention adopts a technical scheme that: a thermal printer head assembly comprising: the paper width limiting component is arranged on the side plate; the printing head component, the paper width limiting component, the roller and the side plate are sleeved on the bottom plate component shaft, the paper stripping V piece and the printing roller are arranged between the bottom plate and the side plate, and the gear is arranged on the printing roller shaft; the paper feed sensor is installed on the bottom plate.

In the invention, the paper width limiting component consists of a rotating handle, a connecting rod, a swinging rod and a paper width limiting rod; the paper width limiting rod is arranged on the swing rod and can slide up and down, so that the paper is limited; the swing rod is connected with the rotating handle through a connecting rod; when the rotating handle is twisted, the swing rod can rotate together.

In the invention, the printing head assembly is fixed on the shaft of the bottom plate assembly through the shaft sleeve, so that the printing head assembly is convenient to assemble and disassemble.

In the invention, the paper stripping V-shaped sheet is arranged between the bottom plate and the side plate, has the function of stripping the bottom paper, and simultaneously adopts the V-shaped structure to greatly improve the stability and reliability of label stripping.

In the invention, the bottom plate assembly is formed by riveting the shafts on the die-casting bottom plate in a pressing manner, and all the shafts are in place in one-time pressing manner, so that the precision is ensured and the printing quality is ensured.

In the invention, the device can be suitable for paper tearing, label peeling, cutters and other paper discharging modes.

The invention has the beneficial effects that: the printer head part is designed into a replaceable module, so that the strength and the matching precision of the printer head part are enhanced, and the printing quality is effectively improved; the method can be directly used in other application scenes, and can reduce the design risk of a new product, improve the design efficiency, and improve the reliability and the design quality of the product; the modular design simultaneously reduces the investment cost and the management cost of the moulds of the company; the structure is simple and reliable, the cost is low, and the installation and maintenance are simple.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:

FIG. 1 is a perspective view of the device of the present invention;

FIG. 2 is a perspective view of the base plate assembly of the apparatus of the present invention;

FIG. 3 is a perspective view of a printhead assembly of the apparatus of the present invention;

FIG. 4 is a perspective view of the paper width limiting assembly of the apparatus of the present invention;

FIG. 5 is a schematic view of the apparatus of the present invention with the printhead open;

FIG. 6 is a schematic view of the mounting sleeve 7 of the printhead assembly of the apparatus of the present invention;

FIG. 7 is a schematic view of a print roller 4 of the apparatus of the present invention;

FIG. 8 is a schematic view of the roller 10 of the present invention;

FIG. 9 is a schematic view of a paper stripping V-piece 9 of the apparatus of the present invention;

FIG. 10 is a schematic view of the installation of a paper feed sensor in the apparatus of the present invention.

Detailed Description

The technical solutions of the present invention will be described clearly and completely below, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example (b):

as shown in fig. 1, there is a perspective view of a head device of a thermal printer, including: the paper width limiting mechanism comprises a bottom plate assembly 1, a printing head assembly 2, a paper width limiting assembly 3, a printing roller 4, a side plate 5, a paper feeding sensor 15, a gear 8, a paper stripping V-shaped sheet 9 and a roller 10; the bottom plate assembly 1 is provided with a shaft, and the printing head assembly 2, the paper width limiting assembly 3, the side plate 5 and the roller 10 are sleeved on the shaft of the bottom plate assembly 1 and can respectively rotate around the shaft; the side plate 5 is arranged at the upper end of the shaft and is fixed by a screw; the printing roller 4 and the paper stripping V-shaped piece 9 are arranged between the bottom plate component 1 and the side plate 5, and bearings are arranged at two ends and are fixed by a clamping ring; the gear 8 is mounted on a printing roller shaft 41 (see fig. 7) and is driven to operate by a driving motor outside the apparatus, and the paper feed sensor 15 is mounted on the bottom plate.

FIG. 1 shows the print head closed, in which the cam 61 of the rotary handle 6 presses the print head assembly 2, and the print head 23 is tightly attached to the print roller 4 to ensure the printing quality; at this time, the paper width regulating lever 33 is pressed above the paper path, and the up-and-down adjustment of the paper width regulating lever 33 serves to regulate the up-and-down movement of the paper during printing. The roller 10 can rotate around a shaft, and a plurality of ribs 101 with sharp top ends are distributed on the roller (as shown in fig. 8), when the printing medium is the backing-paper-free label paper, one side of the label coated with the glue is in contact with the top ends of the ribs on the roller to avoid adhesion, so that the device can meet the requirement of printing the backing-paper-free label.

As shown in fig. 2, it is a perspective view of the bottom plate assembly 1 in the device of the present invention, which includes a bottom plate 11, a rotating handle shaft 12, a print head assembly rotating shaft 13, and three side plate fixing shafts 14; the bottom plate is an aluminum die casting, 5 shafts are pressed and riveted on the bottom plate at one time, and the perpendicularity of the shafts and the plane of the bottom plate and the parallelism between the shafts are ensured. The top end of the printing head assembly rotating shaft 13 is matched with the shaft sleeve 7; referring to fig. 6, the milled flat portion 131 of the printhead module rotating shaft 13 is free from the boss 72 of the shaft sleeve 7, so that the shaft sleeve 7 can be sleeved on the printhead module rotating shaft 13, the shaft sleeve 7 rotates a certain angle after being sleeved, so that the boss 72 is clamped into the journal 132 of the printhead module rotating shaft 13, so that the shaft sleeve 7 cannot move up and down, and at this time, the convex hull 71 of the shaft sleeve 7 is just clamped in the hole 212 of the rotating bracket 21 to limit the rotation of the shaft sleeve, so as to fix the printhead module 2 on the printhead module rotating shaft 13. When maintenance is required, the convex hull end cantilever of the shaft sleeve 7 is pulled upwards to separate the convex hull from the hole, and the shaft sleeve can be detached after the boss 72 is rotated reversely to be overlapped with the milling flat part 131 of the printing head assembly rotating shaft 13. A paper feed sensor 15 (shown in fig. 10) is mounted in the opening 112 of the base plate 11.

As shown in fig. 9, the paper stripping V-piece 9 is a V-shaped bent stainless steel piece, and is clamped on the notch 51 (shown in fig. 5) of the side plate 5 and the groove 111 (shown in fig. 2) of the bottom plate 11.

As shown in fig. 3, it is a perspective view of the print head assembly 2 in the apparatus of the present invention, which includes a print head rotating frame 21, a print head frame 22, a print head 23, a paper pick-up sensor 24 and a first shaft 25; the print head 23 is fixed to the print head holder 22 by screws; the printing head bracket 22 and the printing head rotating bracket 21 are fixed by a first shaft 25 and can rotate around the first shaft 25; the pickup sensor 24 is fixed to the head rotating frame 21 by screws. The print head assembly is sleeved on the print head assembly rotating shaft 13 of the bottom plate assembly 1 by means of two openings 211 on the print head rotating bracket 21, and the print head assembly is axially fixed by a shaft sleeve 7.

As shown in fig. 4, it is a perspective view of the paper width limiting unit 3 in the device of the present invention, which is composed of a rotating handle 6, a connecting rod 31, a swing rod 32 and a paper width limiting rod 33; the paper width limiting rod 33 is arranged on the swing rod 32 and can slide up and down, so that the paper is limited; the swing rod 32 is connected with the rotating handle 6 through the connecting rod 31; the swing rod 32 rotates along with the rotating handle 6 when the rotating handle is twisted; the rotating handle is provided with a cam 61.

As shown in fig. 5, which is a schematic view of the device of the present invention with the printhead open, the rotary handle 6 is rotated to the position shown, the cam 61 on the rotary handle 6 is moved away from the printhead assembly, and the printhead 23 is separated from the print roller 4; at the same time, the paper width limiting lever 33 is directed in the direction of the arrow shown in the figure, and the paper feed path of the head device is opened, so that the user can perform operations such as paper loading.

In general, the machine head part of the thermal printer is designed into a whole module, and the thermal printer is suitable for paper tearing, label peeling, cutters and other paper discharging modes; the bottom plate assembly adopts a mode that an aluminum die-casting bottom plate is riveted with a pin shaft, so that the verticality of the pin shaft and the floor is ensured by the parallelism between the pin shafts; the rotary handle and the paper width limiting rod are combined together through the connecting rod, the paper width limiting rod is pressed above the paper feeding channel when the rotary handle presses the printing head tightly, and the paper width limiting rod opens the paper feeding channel when the printing head is loosened, so that the paper width limiting rod is greatly convenient for a user to use; the quick-release design of the printing head assembly is convenient for maintenance.

In summary, the following steps: the printer head part is designed into a replaceable module, so that the strength and the matching precision of the printer head part are enhanced, and the printing quality is effectively improved; the method can be directly used in other application scenes, and can reduce the design risk of a new product, improve the design efficiency, and improve the reliability and the design quality of the product; the modular design simultaneously reduces the investment cost and the management cost of the moulds of the company; the structure is simple and reliable, the cost is low, and the installation and maintenance are simple.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A thermal printer head assembly, comprising: the paper width limiting component is arranged on the side plate; the printing head component, the paper width limiting component, the roller and the side plate are sleeved on the bottom plate component shaft, the paper stripping V piece and the printing roller are arranged between the bottom plate and the side plate, and the gear is arranged on the printing roller shaft; the paper feed sensor is installed on the bottom plate.

2. The thermal printer head assembly of claim 1, wherein said base plate assembly is comprised of shafts press-riveted to a die-cast base plate, all shafts being press-riveted in place at once.

3. The thermal printer head assembly as in claim 1, wherein said paper width limiting assembly is comprised of a rotary handle, a link, a swing lever and a paper width limiting lever; the paper width limiting rod is arranged on the swing rod and can slide up and down, so that the paper is limited; the swing rod is connected with the rotating handle through a connecting rod; when the rotating handle is twisted, the swing rod can rotate together.

4. The thermal printer head assembly of claim 1, wherein said printhead assembly is secured to said base assembly shaft by a bushing for easy assembly and disassembly.

5. A thermal printer head assembly as in claim 1, wherein said printer head assembly is adapted for use with paper tear, label peel, cutter and other paper delivery means.

6. A thermal printer head assembly as in claim 1 wherein said rollers are arranged with a plurality of sharp-tipped ribs.