Movement of fast-assembly paper guide frame and thermal printer

Abstract

The utility model provides a machine core of fast installation paper guide frame and thermal printer, including thermosensitive piece, rubber roll, seat body and paper guide frame, the installation bottom wall of seat body is connected between two installation side wall, the installation slot is located below the locating slot, the installation bottom wall is provided with locating slope, locating slope and installation bottom wall form the acute included angle arrangement, and the paper guide frame is located in the locating slot. A first paper detecting sensor is arranged on the positioning inclined face, the paper guiding frame is provided with a positioning bottom face and a guiding inclined face, mounting clamping grooves are formed in the two sides, in the paper width direction, of the mounting groove, mounting clamping blocks are arranged on the two sides, in the paper width direction, of the paper guiding frame, and the mounting clamping blocks are clamped with the mounting clamping grooves. The positioning bottom surface is adjacent to the mounting bottom wall, so that the paper guide frame can be quickly positioned and mounted, the paper feeding angle of the printing paper is optimized in cooperation with the arrangement of the guide inclined surface, and then the paper feeding stability and the imaging quality are improved.

Description

Technical Field

[0001] The utility model relates to the field of thermal printing equipment, in particular to a movement of a quick-install paper guide rack and a thermal printer. Background Art

[0002] With the popularization of thermal printers, they are used not only in bank ATMs, supermarket cash registers and e-commerce delivery offices, but also in the rapidly growing e-commerce and express delivery industries, which place higher requirements on the stability, durability, and printing accuracy and speed of the printers, especially for the stability during paper feeding, which directly affects the clamping of the printing paper between the rubber roller and the thermal film, the paper feeding and the imaging quality.

[0003] To this end, the paper guide located on the input side of the rubber roller and thermal film is particularly critical. The paper guide is not only used to guide the paper feeding and optimize the input angle of the printing paper, but also considers the assembly accuracy and ease of assembly of the thermal film, rubber roller and paper guide. Utility Model Content

[0004] The first purpose of the utility model is to provide a mechanism for a quick-install paper guide rack.

[0005] The second object of the utility model is to provide a thermal printer with the above-mentioned core.

[0006] In order to achieve the first purpose of the utility model, the utility model provides a movement of a quick-loading paper guide rack, including a thermal sheet, a rubber roller and a seat body, the seat body is provided with a mounting groove extending in the paper width direction, the mounting groove has mounting side walls at both ends along the paper width direction, the thermal sheet is arranged in the mounting groove, the mounting side wall is provided with a positioning groove, the positioning groove is used to install the axial end of the rubber roller, the positioning groove is provided with an opening at the top, the thermal sheet and the rubber roller are opposite to each other and form a paper feeding channel; a mounting bottom wall is provided below the mounting groove, the mounting bottom wall is connected between the two mounting side walls, a mounting card slot is provided at the connecting position of the mounting bottom wall and the mounting side wall, the mounting card slot is located below the positioning slot, and a mounting bottom wall is provided A positioning bevel, the positioning bevel is arranged at an acute angle with the installation bottom wall, and a first paper detection sensor is arranged on the positioning bevel; the movement also includes a paper guide rack extending along the paper width direction, the paper guide rack is provided with a positioning bottom surface and a guiding bevel, the guiding bevel is located above the positioning bottom surface, the guiding bevel and the positioning bottom surface are arranged at an acute angle, the paper guide rack is provided with mounting blocks at both ends in the paper width direction, and a window is provided through the guiding bevel; the paper guide rack is installed in the installation groove, the positioning bottom surface is adjacent to the installation bottom wall, the installation block is engaged with the installation groove, the paper feeding channel passes through the guiding bevel, the guiding bevel is located below the rubber roller, the guiding bevel is arranged at an obtuse angle with the thermal sheet, and the first paper detection sensor is located at the window.

[0007] A further solution is that an assembly groove is provided on the guiding inclined surface along the loading direction, a positioning hole is provided on the bottom surface of the assembly groove along the loading direction, a fixing hole is provided on the installation bottom wall, the loading direction is perpendicular to the installation bottom wall, the rod of the connecting screw passes through the positioning hole and is connected with the fixing hole, and the head of the connecting screw is located in the assembly groove.

[0008] A further solution is that a plurality of guide ridges are provided on the guide slope, the guide ridges are arranged along the extension direction of the paper feeding passage, and the plurality of guide ridges are arranged along the paper width direction.

[0009] A further solution is that the movement also includes a locking assembly, the locking assembly includes a locking piece and a locking elastic piece, the locking piece includes two locking arms and a connecting plate connected between the two locking arms, each locking arm is provided with a locking piece at the upper part, the locking arm is hinged to the mounting side wall, the locking arm can rotate relative to the mounting side wall, the locking piece can move toward or away from the positioning groove, the locking elastic piece is connected between the connecting plate and the base body, the locking elastic piece applies an elastic locking force toward the positioning groove to the locking piece, and the locking piece can be detachably engaged with the axial end of the rubber roller; the paper guide frame is provided with end faces at both ends of the guiding inclined surface based on the paper width direction, and the locking arm is located between the end face and the mounting side wall.

[0010] A further solution is that the locking arm is provided with a hinge groove at the bottom, and the mounting side wall is provided with a hinge protrusion below the positioning groove, the hinge groove is hinged to the hinge protrusion, the locking arm rotates around the hinge protrusion, and the mounting slot is located below the hinge protrusion.

[0011] A further solution is that a support block is provided at the edge of the end surface, the support block extends along the paper width direction, and the support block is adjacent to the installation side wall.

[0012] In order to achieve the second purpose of the utility model, the utility model provides a thermal printer, characterized in that it includes a cover body, a base and a movement as described above, the base body is arranged on the base, the rubber roller is arranged on the cover body, and the cover body and the base are hinged.

[0013] A further solution is that the thermal printer also includes a mounting bracket, the rubber roller is rotatably arranged on the mounting bracket, and the mounting bracket is fixedly mounted on the cover body; the mounting bracket is provided with a matching inclined surface, and a second paper detection sensor is provided on the matching inclined surface, the matching inclined surface is opposite to the guiding inclined surface, and the second paper detection sensor is opposite to the first paper detection sensor.

[0014] The beneficial effect of the utility model is that, by providing installation slots on both sides of the installation slot based on the paper width direction, the paper guide frame is also provided with installation blocks on both sides of the paper width direction, and the installation blocks are engaged with the installation slots, and the positioning bottom surface is adjacent to the installation bottom wall, so that the paper guide frame can be quickly positioned and installed, and the setting of the guide slope is coordinated to optimize the paper feeding angle of the printing paper, thereby improving the paper feeding stability and imaging quality. Furthermore, by providing an assembly slot and a positioning hole on the guide slope, it is convenient to connect and assemble the connecting screws, so as to further stabilize the assembly of the paper guide frame, and the head is located in the assembly slot, so as not to affect the paper feeding of the printing paper along the guide slope, and the arrangement of the guide convex strips reduces friction, so that the paper feeding of the printing paper is smoother.

[0015] In addition, hinge grooves and hinge protrusions are provided at positions corresponding to the locking arms on both sides, so that the locking arms and the connecting plates can rotate stably, and the lock buckle assembly is arranged in an integrated manner to improve the rotation stability of the locking plate, save the rotating shaft and effectively control the cost. The end face of the paper guide rack avoids the rotation space of the locking arm, and the support block located at the edge is adjacent to the installation side wall, and the paper guide rack can be further limited in the paper width direction, so that the assembly position of the paper guide rack is more precise. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of an embodiment of the movement of the utility model.

[0017] Figure 2 It is a structural diagram of the movement embodiment of the utility model from another perspective.

[0018] Figure 3 It is an exploded view of an embodiment of the movement of the utility model.

[0019] Figure 4 It is an exploded view of the movement embodiment of the utility model from another perspective.

[0020] Figure 5 It is a cross-sectional view of the embodiment of the movement of the utility model along the paper width direction.

[0021] Figure 6 It is a cross-sectional view of the embodiment of the movement of the utility model located at the paper detection sensor.

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments. DETAILED DESCRIPTION

[0023] Reference Figures 1 to 6The movement includes a thermal sheet 13, a rubber roller 14, a seat 1 and a paper guide 2. The seat 1 is provided with a mounting groove 110 extending along the paper width direction Y. The mounting groove 110 has mounting side walls 11 at both ends along the paper width direction Y. The thermal sheet 13 is arranged in the mounting groove 110. The mounting side wall 11 is provided with a positioning groove 111. The positioning groove 111 is used to mount the axial end 141 of the rubber roller 14. The positioning groove 111 is provided with an opening at the top. The thermal sheet 13 and the rubber roller 14 are opposite to each other and form a paper feeding channel 10. A driving assembly is provided on the outside of the mounting side wall 11. The axial end 141 of the rubber roller 14 is provided with a driving gear 182 on the outside of the positioning groove 111. The driving assembly includes a driving motor 18 and a transmission gear 181. The transmission gear 181 is connected between the driving gear 182 and the driving motor 18.

[0024] A mounting bottom wall 112 is provided below the mounting groove 110, and the mounting bottom wall 112 is connected between the two mounting side walls 11. A mounting card slot 114 is provided at the connecting position of the mounting bottom wall 112 and the mounting side wall 11, and the mounting card slot 114 is located below the positioning groove 111. A positioning inclined surface 113 is provided on the mounting bottom wall 112, and the positioning inclined surface 113 is arranged at an acute angle with the mounting bottom wall 112, and a first paper detection sensor 17 is provided on the positioning inclined surface 113.

[0025] The paper guide frame 2 extends along the paper width direction Y. The paper guide frame 2 is provided with a positioning bottom surface 22 and a guiding inclined surface 21. The guiding inclined surface 21 is located above the positioning bottom surface 22. The guiding inclined surface 21 and the positioning bottom surface 22 are arranged at an acute angle. The paper guide frame 2 is provided with mounting blocks 24 at both ends of the paper width direction Y. The guiding inclined surface 21 is penetrated by a window 26. The paper guide frame 2 is installed in the installation groove 110. The positioning bottom surface 22 is adjacent to the installation bottom wall 112. The mounting block 24 is engaged with the installation groove 114. The paper feeding channel 10 passes through the guiding inclined surface 21. The guiding inclined surface 21 is located below the rubber roller 14. The guiding inclined surface 21 and the thermal sheet 13 are arranged at an obtuse angle. The first paper detection sensor 17 is located at the window 26.

[0026] The guide slope 21 is provided with an assembly groove 28 along the loading direction X, and a positioning hole 29 is provided through the bottom surface of the assembly groove 28 along the loading direction X. The installation bottom wall 112 is provided with a fixing hole 116. The loading direction X is perpendicular to the installation bottom wall 112. The rod of the connecting screw passes through the positioning hole 29 and is connected with the fixing hole 116. The head of the connecting screw (not shown) is located in the assembly groove 28. A plurality of guide ridges 27 are provided on the guide slope 21. The guide ridges 27 are arranged along the extension direction of the paper feeding channel 10, and the plurality of guide ridges 27 are arranged along the paper width direction Y.

[0027] The movement also includes a lock assembly, which includes a lock member 12 and a lock elastic member (not shown). The lock member 12 includes two lock arms 121 and a connecting plate 122 connected between the two lock arms 121. Each lock arm 121 is provided with a lock 123 at the upper part, and the lock arm 121 is provided with a hinge groove 124 at the lower part. The installation side wall 11 is provided with a hinge protrusion 115 below the positioning groove 111. The installation card groove 114 is located below the hinge protrusion 115. The hinge groove 124 and the hinge protrusion 111 are connected. 5 is hinged, the locking arm 121 is hinged to the mounting side wall 11, the locking arm 121 rotates relative to the mounting side wall 11 around the hinged protrusion 115, and a pull portion is provided on one side of the locking arm 121, and the lock buckle 123 can be moved toward or away from the positioning groove 111 by the driving of the pull portion, and the lock buckle elastic member is connected between the connecting plate 122 and the base body 1, and the lock buckle elastic member applies an elastic locking force toward the positioning groove 111 to the lock buckle 123, and the lock buckle 123 can be detachably engaged with the axial end 141 of the rubber roller 14.

[0028] The paper guide frame 2 is provided with end surfaces 23 at both ends of the guiding inclined surface 21 based on the paper width direction Y. The locking arm 121 is located between the end surface 23 and the mounting side wall 11. A support block 25 is provided at the edge of the end surface 23. The support block 25 extends along the paper width direction Y. The support block 25 is adjacent to the mounting side wall 11, and the rotation of the locking arm 121 avoids the support block 25.

[0029] The thermal printer includes a cover body, a base and a movement as described above, wherein the base body 1 is arranged on the base, the rubber roller 14 is rotatably fixed on the cover body through a mounting bracket 15, an axle sleeve is arranged outside the axial end 141 of the rubber roller 14, a paper bin is arranged on the base, and the cover body covers the paper bin and is hinged to the base.

[0030] The mounting bracket 15 is provided with a matching slope 151 , on which the second paper detection sensor 16 is provided. The matching slope 151 is opposite to the guiding slope 21 , and the second paper detection sensor 16 is opposite to the first paper detection sensor 17 . The paper feeding channel 10 passes through the space between the matching slope 151 and the guiding slope 21 .

[0031] As can be seen from the above, by setting the installation slots on both sides of the installation slot based on the paper width direction, and the paper guide frame also sets the installation blocks on both sides of the paper width direction, the installation blocks are engaged with the installation slots, and the positioning bottom surface is adjacent to the installation bottom wall, so that the paper guide frame can be quickly positioned and installed, and the setting of the guide slope is coordinated to optimize the paper feeding angle of the printing paper, thereby improving the paper feeding stability and imaging quality. Furthermore, by setting the assembly slot and the positioning hole on the guide slope, it is convenient to connect and assemble the connecting screws, so as to further stabilize the assembly of the paper guide frame, and the head is located in the assembly slot, so as not to affect the paper feeding of the printing paper along the guide slope, and the arrangement of the guide convex strips reduces friction, so that the paper feeding of the printing paper is smoother.

Claims

1. A mechanism of a quick-loading paper guide, comprising a thermal sheet, a rubber roller and a seat, wherein the seat is provided with a mounting groove extending in the paper width direction, the mounting groove has mounting side walls at both ends in the paper width direction, the thermal sheet is arranged in the mounting groove, the mounting side walls are provided with a positioning groove, the positioning groove is used to mount the axial end of the rubber roller, the positioning groove is provided with an opening at the top, the thermal sheet and the rubber roller are opposite to each other and form a paper feeding channel; Features: A mounting bottom wall is provided below the mounting groove, the mounting bottom wall is connected between the two mounting side walls, a mounting card slot is provided at the connection position between the mounting bottom wall and the mounting side wall, the mounting card slot is located below the positioning groove, a positioning inclined surface is provided on the mounting bottom wall, the positioning inclined surface is arranged at an acute angle with the mounting bottom wall, and a first paper detection sensor is provided on the positioning inclined surface; The movement also includes a paper guide frame extending in the paper width direction, the paper guide frame is provided with a positioning bottom surface and a guiding inclined surface, the guiding inclined surface is located above the positioning bottom surface, the guiding inclined surface and the positioning bottom surface are arranged at an acute angle, the paper guide frame is provided with mounting blocks at both ends in the paper width direction, and the guiding inclined surface is penetrated by a window; The paper guide rack is installed in the installation groove, the positioning bottom surface is adjacent to the installation bottom wall, the installation block is engaged with the installation slot, the paper feeding channel passes through the guide slope, the guide slope is located below the rubber roller, the guide slope is arranged at an obtuse angle with the thermal film, and the first paper detection sensor is located at the window.

2. The movement according to claim 1, characterized in that: The guiding inclined surface is provided with an assembly groove along the loading direction, the bottom surface of the assembly groove is provided with a positioning hole along the loading direction, the installation bottom wall is provided with a fixing hole, the loading direction is perpendicular to the installation bottom wall, the rod of the connecting screw passes through the positioning hole and is connected with the fixing hole, and the head of the connecting screw is located in the assembly groove.

3. The movement according to claim 2, characterized in that: A plurality of guide ridges are arranged on the guide slope, and the guide ridges are arranged along the extending direction of the paper feeding passage, and the plurality of guide ridges are arranged along the paper width direction.

4. The movement according to any one of claims 1 to 3, characterized in that: The movement also includes a lock assembly, which includes a lock piece and a lock elastic piece, the lock piece includes two lock arms and a connecting plate connected between the two lock arms, each lock arm is provided with a lock on the upper part, the lock arm is hinged to the mounting side wall, the lock arm can rotate relative to the mounting side wall, the lock can move toward or away from the positioning groove, the lock elastic piece is connected between the connecting plate and the seat body, the lock elastic piece applies an elastic lock force to the lock toward the positioning groove, and the lock can be detachably engaged with the axial end of the rubber roller; The paper guide rack is provided with end surfaces at both ends of the guide slope based on the paper width direction, and the locking arm is located between the end surfaces and the installation side wall.

5. The movement according to claim 4, characterized in that: The locking arm is provided with an articulation groove at the lower part, the mounting side wall is provided with an articulation protrusion below the positioning groove, the articulation groove is hinged to the articulation protrusion, the locking arm rotates around the articulation protrusion, and the mounting slot is located below the articulation protrusion.

6. The movement according to claim 4, characterized in that: A support block is arranged at the edge of the end surface, the support block extends along the paper width direction, and the support block is adjacent to the installation side wall.

7. A thermal printer, characterized in that: It comprises a cover body, a base and a movement as claimed in any one of claims 1 to 6, wherein the base body is arranged on the base, the rubber roller is arranged on the cover body, and the cover body and the base are hinged.

8. The thermal printer according to claim 7, characterized in that: The thermal printer further comprises a mounting bracket, the rubber roller is rotatably arranged on the mounting bracket, and the mounting bracket is fixedly mounted on the cover body; The mounting bracket is provided with a matching inclined surface, on which a second paper detection sensor is provided, the matching inclined surface is opposite to the guiding inclined surface, and the second paper detection sensor is opposite to the first paper detection sensor.

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