Mechanical paper inspection detection mechanism of printer

Abstract

The utility model discloses a mechanical paper inspection detection mechanism of a printer, and particularly relates to the technical field of printers, the mechanical paper inspection detection mechanism comprises a shell, a paper cavity and a shell cover, the right side of the shell is fixedly provided with a paper feeding table, and the bottom end of the paper feeding table is provided with a detection assembly; the detecting assembly comprises a bottom frame, a mounting frame, a photoelectric sensor, a detecting frame, a paper detecting block, a connecting block and a detecting groove, and the bottom frame is mounted at the bottom end of the paper feeding table. By arranging the photoelectric sensor, the paper detecting block and the connecting block, in the state that paper is not loaded, the connecting block is higher than the plane of the paper feeding table along the detecting groove, at the moment, the paper detecting block in linkage with the bottom end is in butt joint with the photoelectric sensor, paper shortage can be alarmed, and on the contrary, if thermo-sensitive paper passes through the top end of the paper feeding table, the connecting block is located on the inner side of the detecting groove, and at the moment, the connecting block is in butt joint with the photoelectric sensor. And the paper detection block linked at the bottom end is separated from the photoelectric sensor, so that the paper shortage alarm state can be canceled, and the adaptability and precision of the detection mechanism during paper shortage detection are enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of printers, in particular to a mechanical paper detection mechanism of a printer. Background Art

[0002] A printer is a computer output device used to print computer processing results on relevant media. There are many types of printers, among which thermal printers are one type. Its working principle is that a semiconductor heating element is installed on the print head. After the print head is heated and contacts the thermal printing paper, the required pattern can be printed. Its principle is similar to that of a thermal fax machine. The image is generated by heating and causing a chemical reaction in the film. The chemical reaction of this thermal printer is carried out at a certain temperature. High temperature will accelerate this chemical reaction. When the temperature is below 60℃, it takes a long time, even up to several years, for the paper to turn dark. When the temperature is 200℃, this reaction is completed within a few microseconds.

[0003] Existing printers mainly use light reflection and light beam detection devices, and the detection accuracy is easily affected by interference. There is no unified standard for paper in the current market, including paper material, color, surface roughness, etc., and the reflective optical coupler affected by these factors will cause inaccurate paper detection.

[0004] Therefore, a mechanical paper detection mechanism for a printer is needed to solve the above problems. Utility Model Content

[0005] The purpose of the present invention is to provide a mechanical paper detection mechanism for a printer to solve the problem of poor detection accuracy of the internal detection mechanism of the printer mentioned in the background art.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a mechanical paper detection mechanism of a printer, comprising a shell, a paper cavity and a shell cover, a paper feed platform being fixed to the right side of the shell, a detection component being provided at the bottom end of the paper feed platform, the detection component comprising a base frame, a mounting frame, a photoelectric sensor, a detection frame, a paper detection block, a connecting block and a detection slot, a base frame being installed at the bottom end of the paper feed platform, a mounting frame being fixed to the bottom end of the base frame, a photoelectric sensor being installed at the left side of the mounting frame, a detection frame being installed at the side of the base frame, the left side of the paper feed platform extending to the inner side of the detection frame, a paper detection block being movably installed inside the detection frame, a connecting block being movably installed at the top end of the paper detection block, and a detection slot being provided at the top end of the paper feed platform.

[0007] Preferably, a paper cavity is provided inside the shell, a shell cover is provided at the top end of the shell, and thermal paper is provided inside the paper cavity.

[0008] Preferably, a conveying platform is installed on the right side of the paper feeding platform, a driving compartment is provided inside the conveying platform, and a rubber roller is provided inside the driving compartment.

[0009] Preferably, the cross section of the rubber roller is smaller than the cross section of the driving chamber, and the cross section of the rubber roller is circular in design.

[0010] Preferably, a printing box is installed on the right side of the shell cover, a bottom groove is provided at the bottom end of the printing box, and a heating component is installed inside the bottom groove.

[0011] Preferably, a paper trough is provided on the right side of the top end of the conveying platform.

[0012] Preferably, the cross section of the detection groove is larger than the cross section of the connecting block, and the top end of the connecting block extends to the inner side of the detection groove.

[0013] Compared with the prior art, the present invention has the following beneficial effects: by providing a photoelectric sensor, a paper detection block and a connecting block, when no paper is loaded, the connecting block is higher than the plane of the paper feed platform along the detection slot. At this time, the paper detection block linked to the bottom end is connected to the photoelectric sensor, and an alarm of paper shortage can be issued. On the contrary, if thermal paper passes through the top of the paper feed platform, the connecting block is located inside the detection slot. At this time, the paper detection block linked to the bottom end is separated from the photoelectric sensor, and the paper shortage alarm state can be cancelled, thereby enhancing the adaptability and accuracy of the detection mechanism in paper shortage detection.

[0014] By providing a paper cavity and a shell cover, the shell is located inside the shell, and the space is large for loading and placing thermal paper. The end of the thermal paper can be slid to the outside along the paper feed table and the paper slot. When the shell cover is closed, the paper cavity can be covered to protect the thermal paper inside the paper cavity, thereby realizing the storage and protection function of the thermal paper by the detection mechanism;

[0015] By providing a rubber roller and a heating component, the rubber roller is arranged on the inner side of the drive compartment, corresponding to the position of the heating component on the inner side of the bottom groove of the printing box. When in use, the rubber roller and the heating component cooperate to assist in the transportation and printing operations of the thermal paper, thereby realizing the convenience of using the detection mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the front cross-sectional structure of the utility model in a paper-containing state;

[0017] Figure 2 This is a schematic diagram of the front cross-sectional structure of the utility model in a paper-out state;

[0018] Figure 3 It is a schematic diagram of the three-dimensional cross-sectional structure of the utility model;

[0019] Figure 4 This is a schematic diagram of the three-dimensional structure of the detection frame of the present utility model.

[0020] In the figure: 1. Shell; 2. Paper cavity; 3. Shell cover; 4. Thermal paper; 5. Paper feed table; 6. Conveyor table; 7. Drive compartment; 8. Rubber roller; 9. Printing box; 10. Bottom slot; 11. Heating assembly; 12. Paper slot; 13. Base frame; 14. Mounting frame; 15. Photoelectric sensor; 16. Detection frame; 17. Paper detection block; 18. Connecting block; 19. Detection slot. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] See also Figure 1-4 The present invention provides an embodiment of a mechanical paper detection mechanism for a printer, comprising a housing 1, a paper cavity 2, and a housing cover 3. The housing 1 is provided with a paper cavity 2, a top end of the housing 1 is provided with a housing cover 3, and a thermal paper 4 is provided inside the paper cavity 2.

[0023] Specifically, if Figure 1 、 Figure 2 and Figure 3 As shown, when in use, the paper cavity 2 is located inside the shell 1. When in use, the thermal paper 4 can be placed inside the paper cavity 2. After the thermal paper 4 is placed inside the paper cavity 2, the shell cover 3 can be placed on the shell 1.

[0024] A conveyor platform 6 is installed on the right side of the paper feed platform 5. A drive compartment 7 is provided inside the conveyor platform 6. A rubber roller 8 is provided inside the drive compartment 7. The cross section of the rubber roller 8 is smaller than the cross section of the drive compartment 7. The cross section of the rubber roller 8 is circular. A printing box 9 is installed on the right side of the shell cover 3. A bottom groove 10 is provided at the bottom end of the printing box 9. A heating component 11 is installed inside the bottom groove 10. A paper slot 12 is provided on the right side of the top of the conveyor platform 6.

[0025] Specifically, if Figure 1 、 Figure 2 and Figure 3 As shown, when in use, the rubber roller 8 is located inside the driving chamber 7 and is connected to the driving device. As the driving device drives the rubber roller 8 to rotate, the thermal paper 4 on the surface can be conveyed and used corresponding to the position of the upper heating component 11;

[0026] A paper feed platform 5 is fixed to the right side of the housing 1, and a detection component is provided at the bottom end of the paper feed platform 5. The detection component includes a base frame 13, a mounting frame 14, a photoelectric sensor 15, a detection frame 16, a paper detection block 17, a connecting block 18 and a detection slot 19. The base frame 13 is installed at the bottom end of the paper feed platform 5, and the mounting frame 14 is fixed to the bottom end of the base frame 13. The photoelectric sensor 15 is installed on the left side of the mounting frame 14. The detection frame 16 is installed on the assembly test of the base frame 13. The left side of the paper feed platform 5 extends to the inside of the detection frame 16. The paper detection block 17 is movably installed inside the detection frame 16. The top of the paper detection block 17 is movably installed with a connecting block 18. A detection slot 19 is provided at the top of the paper feed platform 5. The cross section of the detection slot 19 is larger than the cross section of the connecting block 18, and the top of the connecting block 18 extends to the inside of the detection slot 19.

[0027] Specifically, if Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, when in use, when the thermal paper 4 is transported to the outside along the paper feed platform 5 and the paper slot 12, the connecting block 18 is restrained on the inner side of the detection slot 19, slightly lower than the surface of the paper feed platform 5, and the paper detection block 17 on the bottom side can prevent the photoelectric sensor 15 from being triggered, and is in an untriggered state. On the contrary, when there is a paper shortage, the connecting block 18 moves up along the detection slot 19, slightly higher than the surface of the paper feed platform 5. At this time, the paper detection block 17 on the bottom side contacts the photoelectric sensor 15, triggering an alarm, indicating a paper shortage state.

[0028] Working principle: When in use, the thermal paper 4 is placed on the inner side of the paper cavity 2, and the end is placed on the outside along the surface of the paper feed table 5 and the paper slot 12. After that, the shell cover 3 is closed, and the shell cover 3 and the printing box 9 are driven to connect with the shell 1 and the paper feed table 5. When there is paper, the connecting block 18 is constrained to the inner side of the detection slot 19, slightly lower than the surface of the paper feed table 5, and the paper detecting block 17 on the bottom side can be the principle photoelectric sensor 15. It is in the untriggered state. The rubber roller 8 is driven by the driving device. When it rotates, the rotating rubber roller 8 can assist the thermal paper 4 to move outward. If the thermal paper 4 inside the paper cavity 2 is used up, there is no thermal paper 4 on the surface of the paper feed table 5. At this time, the connecting block 18 moves up along the detection slot 19, slightly higher than the surface of the paper feed table 5. At this time, the paper detecting block 17 on the bottom side contacts the photoelectric sensor 15, triggering an alarm, which is in the paper out state. At this time, the shell cover 3 can be opened and new thermal paper 4 can be loaded into the paper cavity 2.

[0029] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A mechanical paper detection mechanism for a printer, comprising a housing (1), a paper cavity (2) and a housing cover (3), characterized in that: A paper feed platform (5) is fixed to the right side of the housing (1), and a detection component is provided at the bottom end of the paper feed platform (5); The detection component comprises a base frame (13), a mounting frame (14), a photoelectric sensor (15), a detection frame (16), a paper detection block (17), a connecting block (18) and a detection slot (19), wherein the base frame (13) is installed at the bottom end of the paper feed platform (5), the mounting frame (14) is fixed at the bottom end of the base frame (13), the photoelectric sensor (15) is installed on the left side of the mounting frame (14), the detection frame (16) is installed on the side of the base frame (13), the left side of the paper feed platform (5) extends to the inner side of the detection frame (16), the paper detection block (17) is movably installed inside the detection frame (16), the top end of the paper detection block (17) is movably installed with a connecting block (18), and the top end of the paper feed platform (5) is provided with a detection slot (19).

2. The mechanical paper detection mechanism of a printer according to claim 1, characterized in that: A paper cavity (2) is provided inside the shell (1), a shell cover (3) is provided at the top end of the shell (1), and thermal paper (4) is provided inside the paper cavity (2).

3. The mechanical paper detection mechanism of a printer according to claim 1, characterized in that: A conveying platform (6) is installed on the right side of the paper feeding platform (5), a driving bin (7) is provided inside the conveying platform (6), and a rubber roller (8) is provided inside the driving bin (7).

4. The mechanical paper detection mechanism of a printer according to claim 3, characterized in that: The cross section of the rubber roller (8) is smaller than the cross section of the drive chamber (7), and the cross section of the rubber roller (8) is circular in design.

5. The mechanical paper detection mechanism of a printer according to claim 2, characterized in that: A printing box (9) is installed on the right side of the shell cover (3), a bottom groove (10) is provided at the bottom end of the printing box (9), and a heating component (11) is installed inside the bottom groove (10).

6. The mechanical paper detection mechanism of a printer according to claim 3, characterized in that: A paper trough (12) is provided on the right side of the top end of the conveying platform (6).

7. The mechanical paper detection mechanism of a printer according to claim 1, characterized in that: The cross section of the detection groove (19) is larger than the cross section of the connection block (18), and the top end of the connection block (18) extends to the inner side of the detection groove (19).

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