A printing sheet combination positioning device and a combination positioning method thereof

Abstract

The invention discloses a print sheet combination positioning device and a combination positioning method thereof, and the technical scheme thereof is as follows: comprising a print sheet assembly, an upper bracket, an upper cover, and a lower bracket, wherein the print sheet assembly is fixedly mounted on the bottom of the upper bracket, the lower bracket is fixedly mounted on the bottom of the upper bracket, the upper cover is fixedly mounted on the top of the upper bracket, the print sheet assembly comprises a print sheet and a heat sink, positioning columns are arranged at the four corners of the bottom of the print sheet, a cross bone position is arranged at the right end of the bottom of the print sheet, a positioning point is arranged at the left end of the top of the upper bracket, and two groups of the positioning points are symmetrically arranged, the bottom of the heat sink is bonded to the top of the print sheet by heat dissipation silicone grease, the left side of the heat sink is attached to the outer wall of the positioning point, arc grooves are symmetrically provided on the front and rear sides of the inner wall of the upper bracket, and a tearing blade is fixedly mounted on the outer wall of the right end of the upper bracket by a screw, and the beneficial effects of the invention are as follows: high positioning accuracy minimizes the error between the print sheet and the fixed component.

Description

Technical Field

[0001] The invention relates to the technical field of thermal printers, and in particular to a printing sheet assembly positioning device and an assembly positioning method thereof. Background Art

[0002] The working principle of a thermal printer 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 out. Its principle is similar to that of a thermal fax machine. The image is generated by heating and 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°C, the printing paper will take a long time, even several years, to turn dark. When the temperature is 200°C, this reaction will be completed within a few microseconds.

[0003] The prior art has the following deficiencies: Most of the existing small thermal printers are non-positioning or position with a line trial boss, or position at the print sheet welding line position. These methods all produce inaccurate errors. For example, if there is no positioning method, auxiliary jigs are required when assembling the print sheet. Due to the gap error between the jigs, the assembly is inaccurate. For one-line boss positioning, errors will be generated due to production and material shrinkage and deformation, resulting in inaccurate assembly. For positioning at the print sheet welding line, due to the large tolerance of the print sheet itself, the assembly will be even more inaccurate.

[0004] Therefore, it is necessary to invent a kind of printing sheet combination positioning device. Summary of the invention

[0005] To this end, the main purpose of the present invention is to provide a print sheet combination positioning device, which improves positioning accuracy by setting two groups of positioning points, two-point boss positioning makes the positioning line straighter, reduces the probability of deformation due to production and materials, and sets arc positioning to make the print sheet coincide with the center of the rubber roller more accurately when printing, thereby improving clarity, so as to solve the problem of printing errors caused by inaccurate positioning of the print sheet when printing with a thermal printer.

[0006] Another object of the invention is to provide a combined positioning method for a print sheet combined positioning device, which improves positioning accuracy by setting two groups of positioning points, and two-point boss positioning makes the positioning straight line straighter, reducing the probability of deformation due to production and materials, and setting arc positioning to make the print sheet coincide with the center of the rubber roller more accurately during printing to improve clarity, so as to solve the problem of printing errors caused by inaccurate positioning of the print sheet when printing with a thermal printer.

[0007] In order to achieve the above-mentioned main purpose, the present invention provides the following technical scheme: comprising a printing sheet assembly, an upper bracket, an upper cover, and a lower bracket, wherein the printing sheet assembly is fixedly mounted on the bottom of the upper bracket, the lower bracket is fixedly mounted on the bottom of the upper bracket, and the upper cover is fixedly mounted on the top of the upper bracket, the printing sheet assembly comprises a printing sheet and a heat sink, positioning columns are arranged at the four corners of the bottom of the printing sheet, a cross bone position is arranged at the right end of the bottom of the printing sheet, a positioning point is arranged at the left end of the top of the upper bracket, and two groups of the positioning points are symmetrically arranged, the bottom of the heat sink is bonded to the top of the printing sheet by heat dissipation silicone grease, the left side of the heat sink fits the outer wall of the positioning point, arc grooves are symmetrically arranged on the front and back sides of the inner wall of the upper bracket, the printing sheet assembly is fixedly connected to the upper bracket by inserting the positioning column into the arc groove, a screw hole one is arranged at the top of the upper bracket, and six groups of screw holes one are symmetrically arranged, and a paper tearing blade is fixedly installed on the outer wall of the right end of the upper bracket by screw one.

[0008] Preferably, a second screw hole is provided at the bottom of the upper cover, and the second screw hole is used in conjunction with the first screw hole. A pin hole is provided at the left end of the upper cover, and a spring holder is provided at the center of the left end of the upper cover.

[0009] Preferably, a print sheet spring is fixedly installed at the bottom of the print sheet, the bottom of the print sheet spring is sleeved on the outer wall of the cross bone position, and the print sheet spring is plugged into the inner wall of the top of the upper cover.

[0010] Preferably, the inner wall of the upper cover is clamped with the cover opening button, a cylinder is provided at the center of the left end of the cover opening button, the outer wall of the cylinder is sleeved with the cover opening button spring, and the left end of the cover opening button spring is sleeved on the outer wall of the spring holder.

[0011] Preferably, the upper bracket is fixedly connected to the upper cover by screw 2, and the screw 2 is provided with six groups, and the screw 2 is threadedly connected to the inner wall of screw hole 1 and screw hole 2.

[0012] Preferably, the upper cover and the lower bracket are movably connected via a pin, and the pin is inserted into the inner wall of the first pin hole and the second screw hole.

[0013] In order to achieve the above-mentioned another object, the present invention provides the following technical solutions: the printing sheet and the heat sink are bonded together by heat dissipation silicone grease, and after curing, a printing sheet assembly is formed; arc grooves are symmetrically opened on the front and rear sides of the inner wall of the upper bracket, and the printing sheet assembly is fixedly connected to the upper bracket by inserting the arc grooves through the positioning columns, and is always kept in a straight line under the action of the printing sheet spring; when the printing assembly is printing, the printing sheet assembly completes the lowering positioning in the XYZ three-axis direction under the action of the positioning columns to improve the center overlap between the printing sheet and the rubber roller, and heats the thermal printing paper after contacting it to print the required pattern or text, and the printing action is completed.

[0014] Preferably, a second screw hole is provided at the bottom of the upper cover, and the upper bracket and the upper cover are threadedly connected by means of the second screw, wherein six groups of the second screw are provided.

[0015] Preferably, two positioning posts at the front end of the bottom of the printing sheet are installed on the inner wall of the arc groove, and are always kept in a straight line under the action of the printing sheet spring.

[0016] Preferably, a print sheet spring is fixedly installed at the bottom of the print sheet, the bottom of the print sheet spring is sleeved on the outer wall of the cross bone position, and the print sheet spring is inserted into the inner wall of the top of the upper cover.

[0017] The beneficial effects of the present invention are:

[0018] 1. By setting the positioning point on the left side of the print sheet, the two-point positioning is in line with assembly engineering and simplifies the operation process;

[0019] 2. Six sets of screws and two threads are set to connect the upper bracket and the upper cover, avoiding the problem of assembly component misalignment;

[0020] 3. By setting the arc positioning, the machine always works in the same position, so that the print sheet can be more accurately aligned with the center of the rubber roller during printing, thus improving the clarity. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 An exploded view of the printing sheet and the heat sink provided by the present invention;

[0022] Figure 2 An assembly diagram of the printing sheet assembly provided by the present invention;

[0023] Figure 3 A schematic diagram of the connection structure between the upper bracket and the printing sheet assembly provided by the present invention;

[0024] Figure 4 A schematic diagram of the connection between the printing sheet assembly and the upper cover provided by the present invention;

[0025] Figure 5 An exploded view of the present invention.

[0026] In the figure: print sheet 1, heat sink 2, print sheet assembly 3, print sheet spring 4, upper bracket 5, paper tearing blade 6, screw 1 7, cover opening button 8, cover opening button spring 9, upper cover 10, screw 2 11, lower bracket 12, pin 13, arc groove 14, positioning column 15, screw hole 1 16, cross bone position 17, pin hole 1 18, cylinder 19, screw hole 2 20, pin hole 2 21, spring holder 22, positioning point 23. DETAILED DESCRIPTION

[0027] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0028] A printing sheet assembly positioning device embodiment:

[0029] See attached Figure 1-5 The present invention provides a printing sheet assembly positioning device, comprising a printing sheet assembly 3, an upper bracket 5, an upper cover 10, and a lower bracket 12. The printing sheet assembly 3 is fixedly mounted on the bottom of the upper bracket 5, the lower bracket 12 is fixedly mounted on the bottom of the upper bracket 5, and the upper cover 10 is fixedly mounted on the top of the upper bracket 5. The printing sheet assembly 3 comprises a printing sheet 1 and a heat sink 2. Positioning posts 15 are provided at the four corners of the bottom of the printing sheet 1, a cross bone position 17 is provided at the right end of the bottom of the printing sheet 1, a positioning point 23 is provided at the left end of the top of the upper bracket 5, and two groups of positioning points 23 are symmetrically arranged. The bottom of the heat sink 2 is bonded to the top of the printing sheet 1 through heat dissipation silicone grease, and the left side of the heat sink 2 fits the outer wall of the positioning point 23. Circular arc grooves 14 are symmetrically provided on the front and rear sides of the inner wall of the upper bracket 5. The printing sheet assembly 3 is fixedly connected to the upper bracket 5 by inserting the circular arc groove 14 through the positioning post 15. A screw hole 16 is provided at the top of the upper bracket 5, and six groups of screw holes 16 are symmetrically arranged. A tearing blade 6 is fixedly installed on the outer wall of the right end of the upper bracket 5 through a screw 7.

[0030] The printing sheet component 3 has the function of printing out the required pattern or text after heating and contacting the thermal printing paper, the upper cover 10 has the function of installing the upper bracket 5 and the cover opening button 8, the lower bracket 12 has the function of installing the thermal printing paper and other printing components, the printing sheet 1 has the function of heating and printing, the heat sink 2 has the function of dissipating heat for the printing sheet 1, the positioning point 23 has the function of positioning the installation of the printing sheet 1, the heat dissipation silicone grease is a high thermal conductivity insulating organic silicon material, which is almost never solidified and can maintain the grease state during use for a long time at a temperature of -50℃-+230℃, and has both excellent electrical insulation and excellent thermal conductivity, so as to have the function of dissipating heat for the printing sheet 1, the arc groove 14 and the positioning column 15 are used in combination to position the printing sheet component 3, and the printing sheet component 3 is always in the same position when working, so that the center overlap degree of the printing sheet and the rubber roller is more accurate when printing, and the clarity is improved;

[0031] Further, a second screw hole 20 is provided at the bottom of the upper cover 10. Specifically, the second screw hole 20 is used in conjunction with the first screw hole 16. A pin hole 18 is provided at the left end of the upper cover 10. A spring holder 22 is provided at the center of the left end of the upper cover 10. The spring holder 22 has the function of installing the cover opening button spring 9. The first pin hole 18 and the second pin hole 21 are used in conjunction with each other to connect the upper cover 10 and the lower bracket 12.

[0032] Furthermore, a print sheet spring 4 is fixedly installed at the bottom of the print sheet 1. Specifically, the bottom of the print sheet spring 4 is sleeved on the outer wall of the cross bone position 17, and the print sheet spring 4 is plugged into the inner wall of the top of the upper cover 10. The print sheet spring 4 has the function of elastically connecting the print sheet assembly 3 and the upper cover 10, and the cross bone position 17 has the function of fixing and limiting the print sheet spring 4.

[0033] Further, the inner wall of the upper cover 10 is clamped with the cover opening button 8. Specifically, a cylinder 19 is provided at the center of the left end of the cover opening button 8. The outer wall of the cylinder 19 is sleeved with the cover opening button spring 9. The left end of the cover opening button spring 9 is sleeved on the outer wall of the spring clamp 22. The cover opening button 8 has the function of opening and closing the upper cover 10. After pressing to unlock, the upper cover 10 can be rotated around the pin 13 to open the upper cover 10.

[0034] Furthermore, the upper bracket 5 is fixedly connected to the upper cover 10 by screws 11. Specifically, six groups of screws 11 are provided. The screws 11 are threadedly connected to the inner walls of the screw holes 16 and 20. The six groups of screws 11 make the upper bracket 5 and the upper cover 10 more tightly connected, and the positioning of the printing sheet assembly 3 is more accurate, so as to prevent errors caused by production and shrinkage and deformation of the material itself, resulting in inaccurate assembly, improve assembly accuracy, and extend the service life of the printing sheet 1.

[0035] Furthermore, the upper cover 10 and the lower bracket 12 are movably connected via a pin 13 . Specifically, the pin 13 is inserted into the inner wall of the pin hole 18 and the screw hole 20 .

[0036] The use process of the present invention is as follows: when using the present invention, the printing sheet 1 and the heat sink 2 are bonded together by heat dissipation silicone grease, and after curing, the printing sheet assembly 3 is formed. The two front positioning columns 15 behind the printing sheet are installed on the inner wall of the arc groove 14. The printing sheet assembly 3 is always kept in a straight line under the action of the printing sheet spring 4, and will not move in the front and rear directions. The two positioning columns 15 at the rear end of the printing sheet 1 have a large plastic clearance to ensure the tolerance during printing production and will not interfere during assembly. The printing sheet assembly 3 completes the down-regulation positioning in the XYZ three-axis direction under the action of the positioning columns 15, thereby improving the printing accuracy of the thermal printer.

[0037] An embodiment of a printed sheet assembly positioning device:

[0038] The assembly positioning method of the print sheet assembly positioning device of the present embodiment comprises the following steps: the print sheet 1 and the heat sink 2 are bonded together by heat dissipation silicone grease, and after curing, the print sheet assembly 3 is formed; arc grooves 14 are symmetrically opened on the front and rear sides of the inner wall of the upper bracket 5, and the print sheet assembly 3 is fixedly connected to the upper bracket 5 by inserting the arc grooves 14 through the positioning columns 15, and is always kept in a straight line under the action of the print sheet spring 4; when the print assembly 3 is printing, the print sheet assembly 3 completes the lowering positioning in the XYZ three-axis direction under the action of the positioning columns 15 to improve the center overlap between the print sheet 1 and the rubber roller, and heats the thermal printing paper after contacting it to print the required pattern or text, and the printing action can be completed.

[0039] Furthermore, a second screw hole 20 is opened at the bottom of the upper cover 10, and the upper bracket 5 and the upper cover 10 are threadedly connected by a second screw 11, wherein the second screw 11 is provided with six groups.

[0040] Furthermore, two positioning posts 15 at the front end of the bottom of the printing sheet 1 are installed on the inner wall of the arc groove 14 , and are always kept in a straight line under the action of the printing sheet spring 4 .

[0041] Furthermore, a print sheet spring 4 is fixedly installed at the bottom of the print sheet 1 , the bottom of the print sheet spring 4 is sleeved on the outer wall of the cross bone position 17 , and the print sheet spring 4 is inserted into the top inner wall of the upper cover 10 .

[0042] The above is only a preferred embodiment of the present invention. Any person skilled in the art may modify the present invention by using the above technical solution or modify it into an equivalent technical solution. Therefore, any simple modification or equivalent replacement made according to the technical solution of the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A combined positioning method of a printed sheet combined positioning device, characterized in that: The device comprises a printing sheet assembly (3), an upper bracket (5), an upper cover (10), and a lower bracket (12); the printing sheet assembly (3) is fixedly mounted on the bottom of the upper bracket (5); the lower bracket (12) is fixedly mounted on the bottom of the upper bracket (5); the upper cover (10) is fixedly mounted on the top of the upper bracket (5); the printing sheet assembly (3) comprises a printing sheet (1) and a heat sink (2); positioning columns (15) are provided at the four corners of the bottom of the printing sheet (1); a cross bone position (17) is provided at the right end of the bottom of the printing sheet (1); a positioning point (23) is provided at the left end of the top of the upper bracket (5); Two groups of positioning points (23) are symmetrically arranged. The bottom of the heat sink (2) is bonded to the top of the printing sheet (1) by heat dissipation silicone grease. The left side of the heat sink (2) is attached to the outer wall of the positioning point (23). The inner wall of the upper bracket (5) is symmetrically provided with arc grooves (14) on both sides. The printing sheet assembly (3) is fixedly connected to the upper bracket (5) by inserting the arc grooves (14) into the positioning column (15). The top of the upper bracket (5) is provided with a screw hole (16). The screw hole (16) is symmetrically arranged in six groups. The outer wall of the right end of the upper bracket (5) is fixedly installed with a paper tearing blade (6) by a screw (7). The method comprises the following steps: The printing sheet (1) and the heat sink (2) are bonded together by heat dissipation silicone grease, and after curing, a printing sheet assembly (3) is formed; Circular arc grooves (14) are symmetrically provided on the front and rear sides of the inner wall of the upper bracket (5); the printing sheet assembly (3) is fixedly connected to the upper bracket (5) by inserting the circular arc grooves (14) through the positioning column (15), and is always kept in a straight line under the action of the printing sheet spring (4); When the printing sheet assembly (3) is printing, the printing sheet assembly (3) completes the positioning in the XYZ three-axis direction under the action of the positioning column (15) to improve the center overlap between the printing sheet (1) and the rubber roller, and heats the thermal printing paper after contacting it to print the required pattern or text, thereby completing the printing action.

2. The method according to claim 1, characterized in that: The bottom of the upper cover (10) is provided with a second screw hole (20), and the second screw hole (20) is used in conjunction with the first screw hole (16). The left end of the upper cover (10) is provided with a pin hole (18), and a spring holder (22) is provided at the center of the left end of the upper cover (10).

3. The method according to claim 1, characterized in that: A printing sheet spring (4) is fixedly mounted on the bottom of the printing sheet (1), the bottom of the printing sheet spring (4) is sleeved on the outer wall of the cross bone position (17), and the printing sheet spring (4) is plugged into the top inner wall of the upper cover (10).

4. The method according to claim 1, characterized in that: The inner wall of the upper cover (10) is clamped with the cover opening button (8), a cylinder (19) is provided at the center of the left end of the cover opening button (8), the outer wall of the cylinder (19) is sleeved with the cover opening button spring (9), and the left end of the cover opening button spring (9) is sleeved on the outer wall of the spring clamping seat (22).

5. The method according to claim 1, characterized in that: The upper bracket (5) is fixedly connected to the upper cover (10) by screws (11). Six groups of screws (11) are provided. The screws (11) are threadedly connected to the inner walls of screw holes (16) and (20).

6. The method according to claim 1, characterized in that: The upper cover (10) and the lower bracket (12) are movably connected via a pin (13), and the pin (13) is inserted into the inner wall of the first pin hole (18) and the second screw hole (20).

7. The method according to claim 1, characterized in that: A second screw hole (20) is provided at the bottom of the upper cover (10), and the upper bracket (5) and the upper cover (10) are threadedly connected via a second screw (11), wherein six groups of the second screw (11) are provided.

8. The method according to claim 1 or 2, characterized in that: The two positioning posts (15) at the front end of the bottom of the printing sheet (1) are installed on the inner wall of the arc groove (14) and are always kept in a straight line under the action of the printing sheet spring (4).

9. The method according to claim 1 or 2, characterized in that: A printing sheet spring (4) is fixedly installed at the bottom of the printing sheet (1), the bottom of the printing sheet spring (4) is sleeved on the outer wall of the cross bone position (17), and the printing sheet spring (4) is plugged into the top inner wall of the upper cover (10).

Images