Thermal printer with auxiliary knife directly assembled on cover body
By providing installation grooves and fixing holes on the cover of the thermal printer, the secondary knife is directly assembled on the cover, and the problems of complex structure and low assembly efficiency caused by the arrangement of the secondary knife and the rubber roller on the same bracket in the prior art are solved, and the simple assembly and stability of the secondary knife are achieved.
Patent Information
- Application Number
- CN202421991678.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-16
- Publication Date
- 2025-05-13
- Estimated Expiration
- 2034-08-16
AI Technical Summary
During the assembly process of existing thermal printers, the secondary knife and the rubber roller are arranged on the same bracket, resulting in complex structure and low assembly efficiency. The secondary knife is easily subject to the cutting force of the main knife, affecting stability.
By providing the mounting groove, the first fixing hole and the second fixing hole in the cover body, the secondary knife is directly assembled on the cover body by using screws, and cooperated with the positioning column and the third fixing hole, the assembly process of the secondary knife is simplified and its stability is improved.
It realizes simple assembly and stability of the secondary tool, simplifies structural design, improves assembly efficiency, and ensures smooth passage and efficient cutting of printing paper.
Smart Images
Figure CN222859032U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of thermal printers, in particular to a thermal printer with an auxiliary blade directly assembled with a cover body. Background Art
[0002] With the popularization of thermal printers, they are not only used in bank ATMs, supermarket cash registers, e-commerce delivery offices, catering shops, etc., but also in the e-commerce and express delivery industries, where printing is growing rapidly and there are higher requirements for the stability of use and ease of operation of the printers.
[0003] Thermal printers are generally provided with a base, a cover, a rubber roller and a thermal film. After the printed paper is imaged on the thermal film and output to the paper outlet, the movable main knife moves toward the auxiliary knife to achieve cutting. In order to improve the position matching degree of the main knife and the auxiliary knife, the positions of the main knife and the auxiliary knife need to be accurately determined. In order to facilitate assembly, the prior art generally sets the auxiliary knife and the rubber roller on the cover, and moves with the rotation of the cover to open or close. However, since the rubber roller and the thermal film must pass through the corresponding positioning matching structure to achieve stable thermal imaging, the prior art rubber roller and the thermal film are both set on the same bracket, which is not conducive to simplifying the structure and improving assembly efficiency. In addition, the auxiliary knife is often subjected to the cutting force of the main knife, and the stability of the rubber roller will also be affected to a certain extent. Utility Model Content
[0004] The utility model aims to provide a thermal printer with a secondary knife directly assembled with a cover body.
[0005] In order to achieve the purpose of the utility model, the utility model provides a thermal printer in which an auxiliary knife is directly assembled with a cover body, comprising a base, a cover body, a rubber roller and a thermal sheet, the base is provided with a paper bin, the cover body is hinged to the base and covers the paper bin, a paper outlet is formed between the cover body and the base, the thermal sheet is arranged on the base, the rubber roller is arranged on the cover body, the thermal sheet and the rubber roller are opposite to each other and form a paper feeding channel, and the paper feeding channel is connected between the paper outlet and the paper bin; the thermal printer also comprises a main knife assembly, an auxiliary knife and a paper guide rack, the cover body is provided with an installation groove at the paper outlet, the installation groove has an assembly top surface, the assembly top surface is provided with a first fixing hole and a second fixing hole, the auxiliary knife is installed The auxiliary knife is provided with a first positioning hole in the installation groove and below the assembly top surface, and the first connecting screw passes through the first positioning hole and is fixedly connected to the first fixing hole; the paper guide rack is in the installation groove and below the auxiliary knife, and the paper guide rack is provided with a second positioning hole, and the second connecting screw passes through the second positioning hole and is fixedly connected to the second fixing hole. The paper guide rack is provided with a paper guide slope at the paper feeding channel, and an assembly groove is provided at the upper end of the paper guide slope. The rubber roller is arranged along the paper width direction and is rotatably provided in the assembly groove; the main knife assembly includes a main knife and a cutter drive assembly, and the cutter drive assembly is connected to the main knife and drives the main knife to move across the paper outlet toward the auxiliary knife.
[0006] A further solution is that at least two first fixing holes are provided on the assembly top surface, at least two first fixing holes are arranged along the paper width direction, at least two first positioning holes are provided through the auxiliary knife, at least two first positioning holes are arranged along the paper width direction, and a first connecting screw passes through a first positioning hole and is fixedly connected to a first fixing hole.
[0007] A further solution is that at least two second fixing holes are provided on the assembly top surface, at least two second fixing holes are arranged along the paper width direction, at least two second positioning holes are provided through the paper guide frame, at least two second positioning holes are arranged along the paper width direction, and a second connecting screw passes through a second positioning hole and is fixedly connected to a second fixing hole.
[0008] A further solution is that at least two third positioning holes are provided through the auxiliary knife, and at least two positioning columns are provided on the assembly top surface, and one positioning column cooperates with one third positioning hole.
[0009] A further solution is that a back-stop step is provided on the assembly top surface, and the blade back edge of the auxiliary knife is located at the back-stop step.
[0010] A further solution is that the second positioning hole is provided with an arc-shaped positioning block on the end surface facing the second fixing hole, and the arc-shaped positioning block is located at the outer periphery of the second fixing hole and is gap-matched with the edge of the second fixing hole.
[0011] The beneficial effect of the utility model is that by arranging the installation groove, the first fixing hole and the second fixing hole on the cover body, the auxiliary knife is directly assembled to the cover body by means of screws, and the positioning column cooperates with the third positioning hole, thereby realizing the simple assembly of the auxiliary knife, and then the paper guide rack is installed below the auxiliary knife and connected to the second fixing hole of the cover body, and the paper guide rack guides the printing paper by means of the paper guide inclined surface, thereby allowing the printing paper to smoothly pass through the paper feeding channel and be thermally imaged by the thermal film, and after imaging, the main knife can be driven to move across the paper outlet toward the auxiliary knife, thereby realizing the cutting of the printing paper, and cooperating with the anti-retraction step and the positioning column, thereby improving the stability of the auxiliary knife. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a structural diagram of an embodiment of a thermal printer of the utility model.
[0013] Figure 2 It is a structural diagram of the thermal printer embodiment of the utility model after the cover is opened.
[0014] Figure 3 1 is a structural diagram of a cover body portion of an embodiment of a thermal printer of the present invention.
[0015] Figure 4 It is an exploded view of the cover body part of the thermal printer embodiment of the utility model.
[0016] Figure 5 1 is an exploded view of the cover part of the thermal printer embodiment of the present invention from another perspective.
[0017] Figure 6 It is a cross-sectional view of a cutter portion in an embodiment of a thermal printer of the present utility model.
[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments. DETAILED DESCRIPTION
[0019] Reference Figures 1 to 6 The thermal printer 1 includes a base 11, a cover 12, a rubber roller 32, a thermal sheet 112, a main knife assembly 4, an auxiliary knife 31 and a paper guide rack 33. The base 11 is provided with a paper bin 111, and the paper bin 111 is used to place printing paper. The cover 12 is hinged to the base 11 through a hinged arm 121 and covers the paper bin 111. A paper outlet 13 is formed between the cover 12 and the base 11. The thermal sheet 112 is arranged on the base 11, and the rubber roller 32 is arranged on the cover 12. The thermal sheet 112 and the rubber roller 32 are opposite to each other and form a paper feeding channel 113. The paper feeding channel 113 is connected between the paper outlet 13 and the paper bin 111.
[0020] The cover body 12 is provided with a mounting groove 122 at the paper outlet 13, and the mounting groove 122 is arranged in a U shape. The mounting groove 122 has an assembly top surface 123, and the assembly top surface 123 is provided with two first fixing holes 124 and two second fixing holes 125. The two first fixing holes 124 are arranged along the paper width direction, and the two second fixing holes 125 are arranged along the paper width direction. The two first fixing holes 124 are located between the two second fixing holes 125. The auxiliary knife 31 is installed in the mounting groove 122 and is located below the assembly top surface 123. The auxiliary knife 31 is penetrated by two first positioning holes 311, and the two first positioning holes 311 are arranged along the paper width direction. A first connecting screw passes through a first positioning hole 311 and is fixedly connected to a first fixing hole 124. The blade 314 of the auxiliary knife 31 faces the main knife 42, and the back edge 313 of the auxiliary knife 31 is located on the back side of the blade 314.
[0021] The auxiliary knife 31 is provided with at least two third positioning holes 312, and the assembly top surface 123 is provided with at least two positioning posts 126, one positioning post 126 cooperates with one third positioning hole 312, and the two positioning posts 126 are located outside the first positioning hole 311 based on the paper width direction. The assembly top surface 123 is provided with a back-stop step 128, which is arranged in an L shape, and the blade back edge 313 of the auxiliary knife 31 is located at the back-stop step 128.
[0022] The paper guide 33 is in the installation groove 122 and is located below the auxiliary knife 31. The paper guide 33 is provided with two second positioning holes 333, which are arranged along the paper width direction. A second connecting screw passes through a second positioning hole 333 and is fixedly connected to a second fixing hole 125. The second positioning hole 333 is provided with an arc-shaped positioning block 333 on the end surface facing the second fixing hole 125. The arc-shaped positioning block 333 is located at the outer periphery of the second fixing hole 125 and is gap-matched with the edge of the second fixing hole 125. The paper guide 33 is provided with a paper guide inclined surface 331 at the paper feeding channel 113. The upper end of the paper guide inclined surface 331 is provided with an assembly groove 334. The rubber roller 32 is arranged along the paper width direction and is rotatably arranged in the assembly groove 334.
[0023] The main knife assembly 4 includes a main knife 42 and a cutter drive assembly 41. The main knife assembly 4 is arranged on the base 11 and is located at the paper outlet 13. The main knife assembly 4 and the auxiliary knife 31 are located on opposite sides of the paper outlet 13. The cutter drive assembly 41 includes a drive motor and a gear set. The gear set is connected between the drive motor and the main knife 42. Then the cutter drive assembly 41 drives the main knife 42 to move across the paper outlet 13 toward the auxiliary knife 31, and the cooperation of the main knife 42 and the auxiliary knife 31 is used to achieve the cutting of the printed paper.
[0024] As can be seen from the above, by providing a mounting groove, a first fixing hole and a second fixing hole on the cover body, the auxiliary knife is directly assembled to the cover body by means of screws, and the positioning column cooperates with the third positioning hole, thereby realizing simple assembly of the auxiliary knife, and then the paper guide rack is installed below the auxiliary knife and connected to the second fixing hole of the cover body. The paper guide rack guides the printing paper by means of the paper guide slope, thereby allowing the printing paper to smoothly pass through the paper feeding channel and be thermally imaged by the thermal film. After imaging, the main knife can be driven to move across the paper outlet toward the auxiliary knife, thereby realizing the cutting of the printing paper, and cooperating with the stop step and the positioning column, thereby improving the stability of the auxiliary knife.
Claims
1. A thermal printer with a secondary blade directly assembled with a cover body, comprising a base, a cover body, a rubber roller and a thermal sheet, wherein the base is provided with a paper bin, the cover body is hinged to the base and covers the paper bin, a paper outlet is formed between the cover body and the base, the thermal sheet is arranged on the base, the rubber roller is arranged on the cover body, the thermal sheet and the rubber roller are opposite to each other and form a paper feeding channel, and the paper feeding channel is connected between the paper outlet and the paper bin; Features: The thermal printer further comprises a main blade assembly, a secondary blade and a paper guide, the cover body is provided with a mounting slot at the paper outlet, the mounting slot has an assembly top surface, the assembly top surface is provided with a first fixing hole and a second fixing hole, the secondary blade is installed in the mounting slot and is located below the assembly top surface, the secondary blade is provided with a first positioning hole, and a first connecting screw passes through the first positioning hole and is fixedly connected to the first fixing hole; The paper guide rack is in the installation groove and is located below the auxiliary knife. The paper guide rack is provided with a second positioning hole. The second connecting screw passes through the second positioning hole and is fixedly connected with the second fixing hole. The paper guide rack is provided with a paper guide slope at the paper feeding channel. The upper end of the paper guide slope is provided with an assembly groove. The rubber roller is arranged along the paper width direction and is rotatably arranged in the assembly groove. The main knife assembly comprises a main knife and a cutter driving assembly. The cutter driving assembly is connected to the main knife and drives the main knife to move across the paper outlet toward the auxiliary knife.
2. The thermal printer according to claim 1, characterized in that: The assembly top surface is provided with at least two first fixing holes, and at least two of the first fixing holes are arranged along the paper width direction. The auxiliary knife is penetrated by at least two first positioning holes, and at least two of the first positioning holes are arranged along the paper width direction. One first connecting screw passes through one of the first positioning holes and is fixedly connected to one of the first fixing holes.
3. The thermal printer according to claim 2, characterized in that: The assembly top surface is provided with at least two second fixing holes, and at least two second fixing holes are arranged along the paper width direction. The paper guide frame is penetrated by at least two second positioning holes, and at least two second positioning holes are arranged along the paper width direction. A second connecting screw passes through a second positioning hole and is fixedly connected to a second fixing hole.
4. The thermal printer according to claim 2, characterized in that: The auxiliary knife is provided with at least two third positioning holes, and the assembly top surface is provided with at least two positioning columns, and one positioning column is matched with one third positioning hole.
5. The thermal printer according to claim 1, characterized in that: The assembly top surface is provided with a back-stopping step, and the blade back edge of the auxiliary knife is located at the back-stopping step.
6. The thermal printer according to any one of claims 1 to 5, characterized in that: An arc-shaped positioning block is disposed on the end surface of the second positioning hole facing the second fixing hole. The arc-shaped positioning block is located at the outer periphery of the second fixing hole and is gap-matched with the edge of the second fixing hole.