Thermal printer capable of automatically correcting deviation

Abstract

The utility model relates to the field of printers, and discloses an automatic deviation rectifying thermal printer, which comprises a shell, a cover plate is arranged on the upper surface of the shell, a placing groove is formed in the upper surface of the shell, a clamping assembly is arranged on the inner wall of the placing groove, a deviation rectifying assembly is arranged on the front side of the upper surface of the shell, and the deviation rectifying assembly comprises a sliding block. The sliding block is slidably connected to the front end of the upper surface of the shell, a first through groove is formed in the front surface of the sliding block, a moving block is slidably connected to the inner wall of the first through groove, a round block is rotatably connected to the rear surface of the moving block, and a roller is rotatably connected to the left surface of the round block. According to the thermo-sensitive paper clamping and positioning device, thermo-sensitive paper can be positioned through the arranged positioning assembly, the thermo-sensitive paper is prevented from deviating, in addition, during clamping and positioning, the thermo-sensitive paper can be clamped and positioned up, down, left and right at the same time through the cooperation of the sliding blocks and the pin rollers, and the risk that the edge of the thermo-sensitive paper is wrinkled is reduced.

Description

Technical Field

[0001] The utility model relates to the field of printers, in particular to a thermal printer with automatic deviation correction. Background Art

[0002] A thermal printer is an electronic device that uses thermal technology to print text and images. Its working principle is to heat the thermal paper through the print head. When the print head comes into contact with the thermal paper, the heat causes a chemical reaction on the thermal paper, thereby producing the required text or image. When using some thermal printers, a whole roll of thermal paper is placed on the inner wall of the placement slot set on the printer. The two sides of the pulled-out thermal paper are blocked by a baffle, which can automatically correct the thermal paper sent out by the printer to prevent the thermal paper from shifting during use.

[0003] In the prior art, some small thermal printers simply place thermal paper in a placement slot when installing it, without any other restrictions. In order to accommodate thermal paper of different sizes, these placement slots are generally set to be relatively large. When the rolled thermal paper is in use, it will rotate and may shift inside the placement slot, affecting the printing quality. In addition, since the thermal paper has a certain degree of softness, the baffle blocks and corrects the thermal paper. When the thermal paper shifts, the edges may wrinkle, causing damage to the thermal paper. Therefore, a thermal printer with automatic deflection correction is proposed to solve the above problems. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides an automatic deflection-correcting thermal printer, which aims to improve the problem in the prior art that some automatic deflection-correcting thermal printers only use a baffle to simply block and correct the thermal paper, which may cause wrinkles and damage at the edges of the thermal paper.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a thermal printer with automatic deviation correction, comprising a shell, a cover plate provided on the upper surface of the shell, a placement groove provided on the upper surface of the shell, a clamping assembly provided on the inner wall of the placement groove, a deviation correction assembly provided on the front side of the upper surface of the shell, the deviation correction assembly comprising a slider, the slider being slidably connected to the front end of the upper surface of the shell, a through groove 1 provided on the front surface of the slider, a moving block being slidably connected to the inner wall of the through groove 1, a round block being rotatably connected to the rear surface of the moving block, a roller being rotatably connected to the left surface of the round block, and the lower surface of the roller being in contact with the front end of the upper surface of the shell.

[0006] As a further description of the above technical solution:

[0007] The clamping assembly further comprises a clamping block, which is slidably connected to the inner wall of the placement groove. The inner wall of the clamping block is rotatably connected to a rotating plate, and an annular groove is formed on the outer wall of the rotating plate.

[0008] As a further description of the above technical solution:

[0009] The lower surface of the moving block is fixedly connected with a spring 1, and the bottom end of the spring 1 is fixedly connected to the lower side of the inner wall of the through slot 1.

[0010] As a further description of the above technical solution:

[0011] The correction assembly also includes a limit rod, which is slidably connected to the front surface of the slider, and the front surface of the limit rod is fixedly connected to a connecting plate. A groove is provided at the eccentric position of the front surface of the round block, and the rear surface of the limit rod contacts the inner wall of the groove.

[0012] As a further description of the above technical solution:

[0013] The correction assembly also includes a bidirectional threaded rod, which is rotatably connected to the right surface of the top end of the shell, and the outer wall of the bidirectional threaded rod is threadedly connected to an L-shaped plate, the top end of the front surface of the L-shaped plate is fixedly connected to the rear surface of the slider, and the rear surface of the L-shaped plate is fixedly connected to the front surface of the clamping block.

[0014] As a further description of the above technical solution:

[0015] A second spring is sleeved on the outer wall of the limiting rod. One end of the second spring is fixedly connected to the rear surface of the connecting plate, and the other end of the second spring is fixedly connected to the front surface of the sliding block.

[0016] As a further description of the above technical solution:

[0017] A second through slot is provided on the upper surface of the shell body adjacent to the front side of the placement slot, and the L-shaped plate is slidably connected to the inner wall of the second through slot.

[0018] As a further description of the above technical solution:

[0019] The inner wall of the clamping block is rotatably connected with balls, and the number of the balls is multiple, and the balls roll on the inner wall of the annular groove.

[0020] The utility model has the following beneficial effects:

[0021] 1. In the present invention, the positioning assembly is provided to position the thermal paper to prevent the thermal paper from being offset. Moreover, when clamping and positioning, the slider and the roller cooperate to clamp and position the thermal paper up, down, left, and right at the same time, thereby reducing the risk of wrinkles at the edges of the thermal paper.

[0022] 2. In the present invention, the clamping assembly can be used to clamp and position the rolled thermal paper to the left and right to avoid it from shifting during use. In addition, it and the slider are driven by the same bidirectional threaded rod to ensure the quickness of clamping and the accuracy of positioning. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the overall device in the utility model;

[0024] Figure 2 This is a schematic diagram of the opening of the three-dimensional structure of the shell and cover in the utility model;

[0025] Figure 3 This is a schematic diagram of the disassembled cross-section of the three-dimensional structure of the housing and the bidirectional threaded rod in the utility model;

[0026] Figure 4 This is a schematic diagram of the split cross-section of the three-dimensional structure of the splint and the rotating plate in the present invention;

[0027] Figure 5 For this utility model Figure 3 A schematic diagram of the enlarged three-dimensional structure of the A region.

[0028] Legend:

[0029] 1. Housing; 2. Cover plate; 31. Bidirectional threaded rod; 32. Roller; 33. Round block; 34. L-shaped plate; 35. Slider; 36. Moving block; 37. Spring 1; 38. Connecting plate; 39. Limit rod; 310. Spring 2; 311. Through slot 1; 41. Clamping block; 42. Ball bearing; 43. Rotating plate; 44. Annular groove; 5. Through slot 2; 6. Placement slot. DETAILED DESCRIPTION

[0030] 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.

[0031] Reference Figure 1 、 Figure 3 、 Figure 5, the utility model provides an embodiment: a thermal printer with automatic deflection correction, comprising a shell 1, a cover plate 2 is provided on the upper surface of the shell 1, an electronic component-a sensor for printing on thermal paper is provided inside the shell 1 and the cover plate 2, ensuring that the thermal paper is placed on the inner wall of the slot 6 and the cover plate 2 is closed, so that printing can be carried out smoothly, a placement slot 6 is provided on the upper surface of the shell 1, a rolled thermal paper can be placed on the inner wall of the slot 6, which can ensure the stability of the thermal paper, a clamping component is provided on the inner wall of the slot 6, a deflection correction component is provided on the front side of the upper surface of the shell 1, and the deflection correction component includes a slider 35 for positioning both sides of the thermal paper, the slider 35 is slidably connected to the front end of the upper surface of the shell 1, and the front surface of the slider 35 is provided with a through slot-311 to ensure the stable up and down movement of the moving block 36 The inner wall of the through slot 311 is slidably connected with a moving block 36. When fixing and limiting papers of different thicknesses, the moving block 36 will slide on the inner wall of the through slot 311 according to the thickness of the thermal paper. The rear surface of the moving block 36 is rotatably connected with a round block 33 to ensure that the roller 32 rotates stably. The left surface of the round block 33 is rotatably connected with the roller 32. The roller 32 can clamp the edge of the thermal paper up and down to reduce the wrinkling of the edge of the thermal paper. The lower surface of the roller 32 contacts the front end of the upper surface of the shell 1. The lower surface of the moving block 36 is fixedly connected with a spring 37. The spring 37 always pulls the moving block 36 downward through its own elasticity to ensure the stability of the roller 32 clamping the thermal paper. The bottom end of the spring 37 is fixedly connected to the lower side of the inner wall of the through slot 311.

[0032] Reference Figure 2 - Figure 4 The clamping assembly also includes a clamping block 41 that can prevent the rolled thermal paper from moving left and right on the inner wall of the placement slot 6. The clamping block 41 is slidably connected to the inner wall of the placement slot 6. The inner wall of the clamping block 41 is rotatably connected to a rotating plate 43 that ensures that the rolled thermal paper can rotate stably on the inner wall of the placement slot 6. An annular groove 44 is provided on the outer wall of the rotating plate 43. A through groove 2 5 is provided on the front side of the upper surface of the shell 1 near the placement slot 6. The L-shaped plate 34 is slidably connected to the inner wall of the through groove 2 5. The L-shaped plate 34 ensures that the clamping block 41 and the slider 35 can move synchronously under the action of the bidirectional threaded rod 31, thereby improving the quickness of fixation. The inner wall of the clamping block 41 is rotatably connected to a ball 42, and there are multiple groups of balls. The set ball 42 can improve the smoothness of the rotation of the rotating plate 43, and the ball 42 rolls on the inner wall of the annular groove 44.

[0033] Reference Figure 3 、 Figure 5The correcting assembly also includes a limit rod 39 for limiting the round block 33. The limit rod 39 passes through and is slidably connected to the front surface of the slider 35. The front surface of the limit rod 39 is fixedly connected to a connecting plate 38. The limit rod 39 is provided with multiple groups, which can improve the stability of limiting the round block 33, and the multiple groups of limit rods 39 are synchronously driven to move by the connecting plate 38. The eccentric position of the front surface of the round block 33 is provided with a groove, and the groove is provided with multiple groups. The multiple groups of grooves are the limit points when the roller 32 stands up and is placed horizontally. The rear surface of the limit rod 39 contacts the inner wall of the groove. The correcting assembly also includes a two-way threaded rod 31. The two-way threaded rod 31 is a rod-shaped structure with two groups of threads with different rotation directions in the prior art. After the rotation is completed, the structure of the outer wall of the threaded connection at its two ends will move in relative or opposite directions, and it has the characteristics of left and right self-locking. The two-way threaded rod 31 is threadedly connected to the right surface of the top end of the shell 1. The outer wall of the two-way threaded rod 31 is threadedly connected to the L-shaped plate 34. The clamping plate 34 can be moved synchronously with the slider 35 to synchronously position the rolled thermal paper and the pulled thermal paper. The top of the front surface of the L-shaped plate 34 is fixedly connected to the rear surface of the slider 35, and the rear surface of the L-shaped plate 34 is fixedly connected to the front surface of the clamping block 41. The outer wall of the limit rod 39 is sleeved with a spring 2 310. The spring 2 310 always pulls the connecting plate 38 backward through its own elasticity to ensure the stability of the limit rod 39. One end of the spring 2 310 is fixedly connected to the rear surface of the connecting plate 38, and the other end of the spring 2 310 is fixedly connected to the front surface of the slider 35.

[0034] Working principle: When replacing thermal paper, you can open the cover 2, take out the used thermal paper roll, and then put the new rolled thermal paper into the placement slot 6, then pull out one end of the thermal paper through the front end of the upper surface of the shell 1, and then rotate the bidirectional threaded rod 31. Since the L-shaped plate 34 threadedly connected to the outer wall of the bidirectional threaded rod 31 will move accordingly, it will drive the clamping block 41 to slide on the inner wall of the placement slot 6, clamping and positioning the rolled thermal paper to the left and right. At the same time, the L-shaped plate 34 will also drive the slider 35 to slide on the front end of the upper surface of the shell 1. When clamping and positioning the thermal paper, when driving the slider 35 to move, it is necessary to rotate the roller 32 to keep it in a vertical state to facilitate the placement of the pulled out thermal paper.

[0035] The spring 1 37 always pulls the moving block 36 downward by its own elasticity, so that the roller 32 connected to the left surface of the round block 33 can clamp the edge of the thermal paper up and down, thereby reducing the phenomenon of wrinkles at the edge of the thermal paper.

[0036] In addition, the rotating plate 43 rotatably connected to the inner wall of the clamping block 41 ensures that the rolled thermal paper can stably rotate on the inner wall of the placement groove 6, and the ball 42 can improve the smoothness of the rotation of the rotating plate 43.

[0037] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A thermal printer with automatic deflection correction, comprising a housing (1), characterized in that: The upper surface of the shell (1) is provided with a cover plate (2), the upper surface of the shell (1) is provided with a placement groove (6), the inner wall of the placement groove (6) is provided with a clamping assembly, the front side of the upper surface of the shell (1) is provided with a correction assembly, the correction assembly includes a slider (35), the slider (35) is slidably connected to the front end of the upper surface of the shell (1), the front surface of the slider (35) is provided with a through groove (311), the inner wall of the through groove (311) is slidably connected to a moving block (36), the rear surface of the moving block (36) is rotatably connected to a round block (33), the left surface of the round block (33) is rotatably connected to a roller (32), and the lower surface of the roller (32) contacts the front end of the upper surface of the shell (1).

2. The automatic deflection-correcting thermal printer according to claim 1, characterized in that: The clamping assembly further comprises a clamping block (41), the clamping block (41) being slidably connected to the inner wall of the placement groove (6), the inner wall of the clamping block (41) being rotatably connected to a rotating plate (43), and the outer wall of the rotating plate (43) being provided with an annular groove (44).

3. The automatic deflection-correcting thermal printer according to claim 1, characterized in that: The lower surface of the moving block (36) is fixedly connected to a spring 1 (37), and the bottom end of the spring 1 (37) is fixedly connected to the lower side of the inner wall of the through slot 1 (311).

4. The automatic deflection-correcting thermal printer according to claim 1, characterized in that: The deviation correction assembly further includes a limiting rod (39), which is slidably connected to the front surface of the slider (35), and the front surface of the limiting rod (39) is fixedly connected to a connecting plate (38). A groove is provided at an eccentric position on the front surface of the circular block (33), and the rear surface of the limiting rod (39) contacts the inner wall of the groove.

5. The automatic deflection-correcting thermal printer according to claim 2, characterized in that: The deviation correction component further comprises a bidirectional threaded rod (31), the bidirectional threaded rod (31) being rotatably connected to the right surface of the top end of the housing (1), the outer wall of the bidirectional threaded rod (31) being threadedly connected to an L-shaped plate (34), the top end of the front surface of the L-shaped plate (34) being fixedly connected to the rear surface of the slider (35), and the rear surface of the L-shaped plate (34) being fixedly connected to the front surface of the clamping block (41).

6. The automatic deflection-correcting thermal printer according to claim 4, characterized in that: The outer wall of the limiting rod (39) is sleeved with a second spring (310), one end of the second spring (310) is fixedly connected to the rear surface of the connecting plate (38), and the other end of the second spring (310) is fixedly connected to the front surface of the slider (35).

7. The automatic deflection-correcting thermal printer according to claim 5, characterized in that: A second through slot (5) is provided on the upper surface of the shell (1) adjacent to the front side of the placement slot (6), and the L-shaped plate (34) is slidably connected to the inner wall of the second through slot (5).

8. The automatic deflection-correcting thermal printer according to claim 2, characterized in that: The inner wall of the clamping block (41) is rotatably connected to balls (42) in a plurality of groups, and the balls (42) roll on the inner wall of the annular groove (44).

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