Thermal transfer printer paper feeding precision measuring device

Abstract

The utility model provides a paper feeding precision measuring device of a thermal transfer printer, which belongs to the technical field of thermal transfer printers and comprises a printing mechanism comprising a casing, a groove arranged at the top of the casing and a paper outlet arranged in an inner cavity of the groove. The transmission mechanism comprises a shaft seat fixedly installed in an inner cavity of the machine shell and a shaft rod rotationally installed in an inner cavity of the shaft seat. Through the cooperation of the pressure controller and the adjusting support, the rack belt can be accurately controlled, the pressure is adjusted in real time so as to ensure the stability in the paper conveying process, meanwhile, the supporting spring absorbs external vibration and impact, and position deviation is reduced; besides, a limiting block and a limiting groove channel in the positioning assembly accurately limit movement of the contact piece and prevent deviation, and a reset spring ensures that the contact piece automatically resets after each time of measurement, so that the problem of transmission errors caused by gear gaps is effectively solved, and accuracy and stability of paper feeding precision measurement are remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of thermal transfer printer, specifically related to a thermal transfer printer paper feeding precision measuring device. BACKGROUND

[0002] In many fields such as industrial production, commercial office and logistics, thermal transfer printer is widely used because of its clear and durable printing on various materials, and the paper feeding precision measuring device can provide accurate data support for the production debugging, quality detection and daily maintenance of the printer, which helps to improve the overall performance and market competitiveness of the printer.

[0003] At present, the device using gear transmission has a certain gap between gears, and the gap will cause transmission error when switching forward and reverse or load changes, affecting the paper feeding precision measurement, for example, when the printer performs bidirectional printing operation, the gear gap will cause a slight deviation in the moving position of the paper, and the measuring device is difficult to accurately capture these deviations, thereby reducing the measurement accuracy. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a thermal transfer printer paper feeding precision measuring device, which aims at solving the problems in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical scheme:

[0006] A thermal transfer printer paper feeding precision measuring device, comprising,

[0007] The printing mechanism comprises a housing, a groove formed in the top of the housing, and a paper outlet formed in the inner cavity of the groove.

[0008] The transmission mechanism comprises a shaft seat fixedly installed in the inner cavity of the housing, a shaft rod rotatably installed in the inner cavity of the shaft seat, a driving gear fixedly installed at the end of the shaft rod, and a rack belt movably sleeved outside the driving gear.

[0009] And a limiting mechanism cooperating with the transmission mechanism.

[0010] As a preferred scheme of the utility model, the printing mechanism further comprises a cover plate hingedly connected to the outer side of the housing, and a detection chamber formed in the side of the housing away from the cover plate.

[0011] As a preferred scheme of the utility model, the transmission mechanism further comprises a driven gear movably sleeved at the other end of the rack belt, and a detector fixedly installed outside the driven gear.

[0012] As a preferred scheme of the utility model, the limiting mechanism comprises a support fixedly installed in the inner cavity of the detection chamber, a mounting seat fixedly installed at the top of the support, a pressure controller fixedly installed outside the mounting seat, and a connecting seat fixedly installed outside the pressure controller.

[0013] As a preferred scheme of the utility model, the limiting mechanism further comprises an adjusting support hinged at the bottom of the connecting seat, a supporting spring fixedly installed in the inner cavity of the adjusting support, and a positioning assembly arranged at the bottom of the adjusting support.

[0014] As a preferred scheme of the utility model, the positioning assembly comprises a shell hinged at the bottom of the adjusting support, a reset spring fixedly installed in the inner cavity of the shell, and a contact sheet fixedly installed at the bottom of the reset spring.

[0015] As a preferred scheme of the utility model, the positioning assembly further comprises a rectangular slot opened at the bottom of the shell, a limiting block fixedly installed outside the contact sheet, and a limiting slot opened in the inner wall of the shell, and the limiting block is movably clamped in the inner cavity of the limiting slot.

[0016] Compared with the prior art, the utility model has the beneficial effects that: through the cooperation of the pressure controller and the adjusting support, the rack belt can be accurately controlled, the pressure is adjusted in real time to ensure the stability in the paper transmission process, the supporting spring absorbs external vibration and impact, and the position deviation is reduced; in addition, the limiting block and the limiting slot in the positioning assembly accurately limit the movement of the contact sheet, prevent deviation, and the reset spring ensures that the contact sheet is automatically reset after each measurement, thereby effectively solving the transmission error problem caused by the gear gap, and significantly improving the accuracy and stability of the paper travel precision measurement. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the drawings needed to be used in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without paying creative labor. Among them:

[0018] Figure 1 It is the overall structure schematic diagram of the utility model;

[0019] Figure 2 It is the side view sectional view of the utility model's casing structure;

[0020] Figure 3 It is the structure local schematic view of the utility model's transmission mechanism and limiting mechanism;

[0021] Figure 4 It is the shell structure section view of the utility model.

[0022] In the figure: 100, printing mechanism; 101, machine shell; 102, recess; 103, paper outlet; 104, cover plate; 105, detection chamber; 200, transmission mechanism; 201, shaft seat; 202, shaft rod; 203, driving gear; 204, rack belt; 205, driven gear; 206, detector; 300, limiting mechanism; 301, support; 302, mounting seat; 303, pressure controller; 304, connecting seat; 305, adjusting support; 306, supporting spring; 307, positioning assembly; 307a, shell; 307b, reset spring; 307c, contact sheet; 307d, rectangular groove; 307e, limiting block; 307f, limiting groove. DETAILED DESCRIPTION

[0023] In order to make the above-mentioned purpose, features and advantages of the utility model more obvious and easy to understand, the specific embodiments of the utility model are described in detail below combined with the drawings of the specification.

[0024] In the following description, a lot of specific details are set forth in order to fully understand the utility model, but the utility model can also be implemented in other ways different from the description herein, and those skilled in the art can make similar generalization without departing from the connotation of the utility model, therefore the utility model is not limited by the specific embodiments disclosed below.

[0025] Secondly, "one embodiment" or "embodiment" referred to herein means that specific features, structures or characteristics can be included in at least one implementation of the utility model. "In one embodiment" appearing in different places in the specification does not mean the same embodiment, and is not an embodiment that is independent or alternative to other embodiments.

[0026] EMBODIMENT

[0027] REFERENCE Figures 1-4 For the embodiment of the utility model, the embodiment provides a thermal transfer printer paper feeding precision measuring device, comprising,

[0028] The printing mechanism 100 comprises a machine shell 101, a recess 102 formed in the top of the machine shell 101, and a paper outlet 103 formed in the inner cavity of the recess 102.

[0029] The transmission mechanism 200 comprises a shaft seat 201 fixedly installed in the inner cavity of the machine shell 101, a shaft rod 202 rotatably installed in the inner cavity of the shaft seat 201, a driving gear 203 fixedly installed at the end of the shaft rod 202, and a rack belt 204 movably sleeved on the outer side of the driving gear 203.

[0030] And the limiting mechanism 300 used in cooperation with the transmission mechanism 200.

[0031] Specifically, the printing mechanism 100 further comprises a cover plate 104 hinged outside the shell 101, and a detection chamber 105 opened on the side of the shell 101 away from the cover plate 104.

[0032] Among them, the cover plate 104 can place paper inside the shell 101 after opening.

[0033] Further, the transmission mechanism 200 further comprises a driven gear 205 movably sleeved at the other end of the rack strip 204, and a detector 206 fixedly installed outside the driven gear 205.

[0034] Among them, the device adopts a double-gear design of the driving gear 203 and the driven gear 205 in the transmission mechanism 200, and the two are tightly connected through the rack strip 204. This structure can effectively eliminate the gap between the gears, especially when switching forward and reverse or the load changes, it can significantly reduce the transmission error. For example, in the bidirectional printing operation, the moving position of the paper will not produce a slight deviation due to the gear gap, thereby improving the accuracy of the paper feed precision measurement.

[0035] Preferably, the limiting mechanism 300 comprises a bracket 301 fixedly installed in the inner cavity of the detection chamber 105, a mounting seat 302 fixedly installed on the top of the bracket 301, a pressure controller 303 fixedly installed outside the mounting seat 302, and a connecting seat 304 fixedly installed outside the pressure controller 303. The limiting mechanism 300 further comprises an adjusting bracket 305 hinged at the bottom of the connecting seat 304, a supporting spring 306 fixedly installed in the inner cavity of the adjusting bracket 305, and a positioning assembly 307 arranged at the bottom of the adjusting bracket 305.

[0036] Among them, the limiting mechanism 300 can accurately control the rack strip 203 through the cooperation of the pressure controller 303 and the adjusting bracket 305. The pressure controller 303 can adjust the pressure of the rack strip 203 in real time to ensure that the paper remains stable during transmission. At the same time, the design of the adjusting bracket 305 and the supporting spring 306 can absorb external vibration and impact, further reducing the positional deviation during paper transmission.

[0037] Further, the positioning assembly 307 comprises a shell 307a hinged at the bottom of the adjusting support 305, a reset spring 307b fixedly installed in the inner cavity of the shell 307a, and a contact sheet 307c fixedly installed at the bottom of the reset spring 307b. The positioning assembly 307 further comprises a rectangular slot 307d opened at the bottom of the shell 307a, a limiting block 307e fixedly installed outside the contact sheet 307c, and a limiting slot 307f opened at the inner wall of the shell 307a, and the limiting block 307e is movably clamped in the inner cavity of the limiting slot 307f.

[0038] The design of the limiting block 307e and the limiting slot 307f in the positioning assembly 307 can accurately limit the movement of the contact sheet 307c. This structure can effectively prevent the contact sheet 307c from deviating during the paper transmission process, and ensure that it always maintains good contact with the rack strip 204. The design of the reset spring 307b can automatically reset the contact sheet 307c after the paper transmission is completed, and prepare for the next measurement.

[0039] In use, the cover plate 104 is opened, the paper is placed into the casing 101, the paper enters the transmission path through the paper outlet 103, the driving gear 203 drives the rack strip 204 through the shaft 202, drives the driven gear 205 to rotate, realizes the precision measurement of the detector 206, the pressure controller 303 adjusts the pressure of the rack strip 204 in real time according to the characteristics of the paper, the adjusting support 305 and the supporting spring 306 absorb external vibrations, ensure the stability of the paper transmission path, the contact sheet 307c always maintains good contact with the rack strip 204 through the limiting design of the limiting block 307e and the limiting slot 307f, and the transmission state of the paper is monitored in real time, the detector 206 monitors the transmission data of the paper in real time, and the reset spring 307b resets the contact sheet 307c after the transmission is completed, and prepares for the next measurement.

[0040] In summary, the driving gear 203 and the driven gear 205 are closely connected through the rack strip 204, effectively eliminating the gear gap, reducing the transmission error when switching forward and reverse or the load changes, ensuring the accuracy of the paper transmission position, the pressure controller 303 and the adjusting support 305 can adjust the pressure of the rack strip 204 in real time, ensuring the stability during the paper transmission process, while the supporting spring 306 absorbs external vibrations, further reducing the position deviation, the limiting block 307e and the limiting slot 307f accurately limit the movement of the contact sheet 307c, preventing it from deviating during the paper transmission process, and the reset spring 307b ensures that the contact sheet 307c is automatically reset after each measurement, ensuring the consistency and accuracy of the measurement.

[0041] It is important to note that the construction and arrangements of the application shown in the various exemplary embodiments are illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications can be made to the embodiments without departing from the novel teachings and advantages of the subject matter described herein (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters, mounting arrangements, use of materials, colors, orientations, locations, and the like). For example, the elements shown as integrally formed can be constructed of multiple parts or elements, the position of elements can be reversed or otherwise varied, and the nature or number of elements or positions can be modified or changed. Thus, all such modifications are intended to be included within the scope of the present inventive subject matter. The order or sequence of any process or method steps can be varied or re-sequenced without departing from the subject matter described herein. Any "open / closed" claims are intended to encompass the structure described herein, and not just the structure equivalent, but also the equivalent structure. Other substitutions, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present inventive subject matter. Accordingly, the present inventive subject matter is not limited to particular embodiments described, but extends to various modifications that nevertheless fall within the scope of the appended claims.

[0042] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of an actual implementation can be described (i.e., those pertaining to the

[0043] It is to be understood that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions can be made. Such development efforts can inevitably lead to a number of substitutions, modifications, changes and omissions of parts illustrated as having a specific configuration. Such are the natural consequences of design choices and manufacturing practices, and are to be expected by those skilled in the art. Accordingly, the scope of the present inventive subject matter is to be indicated solely by the appended claims, rather than the examples described herein, giving all due scope to the interdependence of the various claims attaching to and forming a part of the same.

[0044] It should be noted that the above examples are intended to illustrate the technical solutions of the present application but not to limit the present application, and although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the present application, and all should be included in the scope of the claims of the present application.

Claims

1. A thermal transfer printer paper path precision measurement device, characterized by: The utility model relates to a printing mechanism (100) and a limiting mechanism (300) used in cooperation with the transmission mechanism (200). The printing mechanism (100) further comprises a cover plate (104) hinged on the outside of the casing (101), and a detection chamber (105) opened on the side of the casing (101) away from the cover plate (104). The transmission mechanism (200) further comprises a driven gear (205) movably sleeved on the other end of the rack strip (204), and a detector (206) fixedly installed on the outside of the driven gear (205). The limiting mechanism (300) comprises a bracket (301) fixedly installed in the inner cavity of the detection chamber (105), a mounting seat (302) fixedly installed on the top of the bracket (301), a pressure controller (303) fixedly installed on the outside of the mounting seat (302), and a connecting seat (304) fixedly installed on the outside of the pressure controller (303).

2. A thermal transfer printer paper tracking precision measuring device according to claim 1, characterized in that: The limiting mechanism (300) further comprises an adjusting bracket (305) hinged on the bottom of the connecting seat (304), a supporting spring (306) fixedly installed in the inner cavity of the adjusting bracket (305), and a positioning assembly (307) arranged on the bottom of the adjusting bracket (305).

3. A thermal transfer printer paper tracking precision measuring device according to claim 2, characterised in that: The positioning assembly (307) comprises a housing (307a) hinged on the bottom of the adjusting bracket (305), a reset spring (307b) fixedly installed in the inner cavity of the housing (307a), and a contact sheet (307c) fixedly installed on the bottom of the reset spring (307b).

4. A thermal transfer printer paper tracking precision measuring device according to claim 3, characterized in that: The positioning assembly (307) further comprises a rectangular groove (307d) opened on the bottom of the housing (307a), a limiting block (307e) fixedly installed on the outside of the contact sheet (307c), and a limiting groove (307f) opened on the inner wall of the housing (307a), and the limiting block (307e) is movably clamped in the inner cavity of the limiting groove (307f).

5. A thermal transfer printer paper tracking precision measuring device according to claim 4, characterised in that: ​ 6. A thermal transfer printer paper tracking precision measuring device according to claim 5, wherein: ​ 7. A thermal transfer printer paper path precision measurement device according to claim 6, characterised in that: ​

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