A printer that stabilizes printing

Abstract

A kind of stable printing printer, including printer body and the support frame mounted, the support frame is slidably arranged on the chassis, the paper bin support is fixedly arranged on the chassis, the paper roll is arranged on the paper bin support by paper feeding shaft, the upper cover is arranged on the printer body, the side of upper cover close to paper roll is provided with opening lever by spanner shaft, the spanner shaft is sleeved with lever torsional spring, for maintaining the pressing force of opening lever, the front end of opening lever is provided with roller by roller shaft, the support frame has an insert block, the chassis has an adjusting slot matched with the insert block, for adjusting the position of printer body on the chassis;The roller structure pressurized by spring effectively eliminates the paper tape vibration and wrinkle caused by the change of paper roll diameter, ensures that the paper tape is always flat and stable into the lower of print head, makes the contact of thermal head and paper tape more uniform, the printed handwriting is clear, consistent, without fuzzy or broken line phenomenon.

Description

Technical Field

[0001] This utility model relates to the field of printers, and in particular to a printer that provides stable printing. Background Technology

[0002] A printer is a tool that directly transfers input data, text, and other information onto paper. With the continuous development of technology, there are now many types of printers, among which the most common type is the thermal printer. It utilizes the heating and cooperation of thermal paper and the printing end. The surface of the heated part of the thermal paper changes and forms patterns. By using the accumulation of patterns, the required information is directly printed onto the thermal paper, achieving rapid printing of information.

[0003] However, in existing thermal printers, the size of the paper roll changes during use, and the paper tape vibrates when entering the printer, which makes it impossible to ensure that the paper tape entering the printer is flat, thus affecting the printing effect. At the same time, when printing on paper rolls of different materials, it is inconvenient to adjust the distance between the printer and the paper roll. To solve the above problems, a printer with stable printing is proposed. Utility Model Content

[0004] The purpose of this invention is to solve the problems of vibration in existing paper tapes affecting the printing effect of printers and the inconvenience of adjusting the distance between the printer and the paper roll.

[0005] The present invention adopts the following technical solution:

[0006] A printer for stable printing includes a printer body and a support frame on which it is mounted. The support frame is slidably mounted on a base frame. A paper tray bracket is fixedly mounted on the base frame. A paper roll is mounted on the paper tray bracket via a paper threading shaft. The printer body has a top cover. A cover opening lever is mounted on the side of the top cover near the paper roll via a lever shaft. A lever spring is sleeved on the lever shaft to maintain the downward pressure of the cover opening lever. A roller is mounted on the front end of the cover opening lever via a roller shaft. The support frame has an insert block. The base frame has an adjustment groove that mates with the insert block for adjusting the position of the printer body on the base frame.

[0007] Furthermore, one end of the top cover is connected to the printer body via a bearing, and the other end is equipped with a cover opening lever. The paper roll extends into the bottom of the top cover and is printed on it by the thermal print head module inside the printer body.

[0008] Furthermore, the cover-opening wrench has an L-shaped cross-section, with through holes at the connection points of its two sides. The cover-opening wrench is fitted onto the wrench shaft through the through holes. The long side of the cover-opening wrench is provided with a boss for mounting rollers. The rollers face directly downwards and contact the paper strip of the paper roll.

[0009] Furthermore, the upper cover has a latching shaft and a moving groove for the latching shaft to move. The latching shaft is located below the cover opening lever. The printer body has a locking block that cooperates with the latching shaft. The locking block is located below the upper cover. The locking block has a semi-enclosed arc-shaped receiving space. The opening of the locking block faces the paper roll. The two ends of the latching shaft cooperate with the arc-shaped receiving space of the locking block to lock the upper cover and the printer body.

[0010] Furthermore, the printer body is connected to the support frame by bolts. The base frame is stepped. The paper tray support is fixedly installed on the higher horizontal side of the base frame. The support frame is located on the lower horizontal side of the base frame. An insertion block is provided on the side of the support frame near the vertical side of the base frame. An adjustment groove is provided on the vertical side of the base frame. The insertion block has several through holes for screw insertion. The outer side of the adjustment groove has through holes for screw insertion, and the through holes are the same size as the through holes on the insertion block, for adjusting the distance between the printer body and the vertical side of the base frame.

[0011] Furthermore, the short side of the cover-opening wrench rotates around the wrench shaft and contacts the latch shaft;

[0012] Furthermore, the printer body contains a rubber roller for driving the paper belt of the paper roll.

[0013] Furthermore, the paper roll has a through hole in the middle and is fitted onto the paper threading shaft through the through hole;

[0014] Furthermore, the printer body is equipped with a three-proof nozzle module on one side of the paper output end, which is used to receive the printed paper tape.

[0015] The beneficial effects of this utility model are:

[0016] The spring-loaded roller structure effectively eliminates paper tape vibration and wrinkles caused by changes in paper roll diameter, ensuring that the paper tape always enters the print head smoothly and stably, making the contact between the thermal head and the paper tape more uniform, and producing clear, consistent, and unblurred or broken characters.

[0017] The sliding fit structure between the support bracket and the adjustment groove on the base frame allows for easy adjustment of the distance between the entire printer body and the paper roll, thereby quickly adapting to different paper thicknesses and types, optimizing printing pressure and effects, and enhancing the printer's versatility and adaptability. Attached Figure Description

[0018] Figure 1 A schematic diagram of the cross-sectional structure of a printer for stable printing according to a utility model;

[0019] Figure 2 Rear view of a printer for stable printing according to a utility model;

[0020] Figure 3This is a partial structural diagram of a printer for stable printing, as per utility model.

[0021] Figure 4 A schematic diagram of the specific structure of a printer for stable printing according to a utility model;

[0022] Figure 5 This is a partial structural diagram of a printer for stable printing according to a utility model.

[0023] Figure 6 This is a schematic diagram of the internal structure of a printer for stable printing, which is a utility model.

[0024] In the diagram: 1. Printer body; 2. Support frame; 3. Base frame; 4. Paper tray support; 5. Paper feed shaft; 6. Paper roll; 7. Top cover; 8. Opening wrench; 9. Wrench shaft; 10. Wrench torsion spring; 11. Roller shaft; 12. Roller; 13. Clip shaft; 14. Rubber roller; 15. Three-proof nozzle module; 16. Insert block; 17. Adjustment slot. Detailed Implementation

[0025] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0026] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0028] Example 1

[0029] This utility model provides a printer for stable printing, including a printer body 1 and a support frame 2 on which it is mounted. The support frame 2 is slidably mounted on a base frame 3. The base frame 3 is designed in a stepped shape, consisting of a higher horizontal side and a lower horizontal side connected by a vertical side. A paper tray support 4 is fixedly mounted on the higher horizontal side. A paper feed shaft 5 is mounted on the paper tray support 4 for carrying a paper roll 6. The through hole in the middle of the paper roll 6 is fitted onto the paper feed shaft 5 and can rotate freely.

[0030] The printer body 1 is fixedly mounted on the support frame 2 by bolts. The support frame 2 is placed on the lower horizontal side of the base frame 3. The support frame 2 has an insert block on the side near the vertical side of the base frame 3. The vertical side of the base frame 3 has a long strip-shaped adjustment groove 17. A screw passes through the adjustment groove 17 and the through hole on the insert block in sequence and is tightened with a nut. By loosening the nut, the entire support frame 2 can slide back and forth on the base frame 3 to adjust the relative distance between the printer body 1 and the paper roll 6. After the adjustment is in place, the nut is tightened to fix it.

[0031] The printer body 1 is hinged to a top cover 7 via a bearing. On the side of the top cover 7 near the paper roll 6, an L-shaped opening wrench 8 is installed via a wrench shaft 9. A wrench spring 10 is fitted on the wrench shaft 9 to provide a continuous downward pressure for the opening wrench 8. The long side end of the opening wrench 8 has a boss for mounting a roller 12 via a roller shaft 11. The roller 12 faces directly downward. The paper strip of the paper roll 6 passes under the roller 12 and then extends under the top cover 7. Driven by the rubber roller 14, it enters the printer body 1 and is printed by the thermal print head module.

[0032] The short side of the cover opening wrench 8 rotates around the wrench shaft 9 and contacts the latch shaft 13. The short side of the cover opening wrench 8 supports the latch shaft 13 and moves it in the moving groove, so that the latch shaft 13 disengages from the latch block on the printer body 1 that cooperates with the latch shaft 13. This makes the top cover 7 have no other connection with the printer body 1, and the top cover 7 can be directly lifted for convenient operation.

[0033] Working principle:

[0034] During printing, a suitable paper roll 6 is placed on the paper tray bracket 4 via the paper threading shaft 5. The position of the support bracket 2 on the base frame 3 is adjusted and fixed in the appropriate position via the insert block 16 and the adjustment groove 17, so that the paper roll 6 and the printer body 1 are adjusted to the appropriate position. The cover opening lever 8 is lifted upwards, and the short side of the cover opening lever 8 rotates around the lever shaft 9 and contacts the latch shaft 13. The short side of the cover opening lever 8 supports the latch shaft 13 and moves it in the moving groove. The two ends of the latch shaft 13 move out of the semi-enclosed arc-shaped receiving space of the latch block, so that the top cover 7 has no other connection with the printer body 1 and can be directly lifted. After the top cover 7 is lifted, the latch shaft 13 returns to its original position under the action of gravity in the moving groove. The paper tape of the paper roll 6 is placed into the rubber roller 14 of the printer body 1. The top cover 7 is closed, and the roller 12 of the cover opening lever 8 contacts the paper roll 6. The rubber roller 14 rotates, driving the paper tape forward and through the thermal head mold inside the printer body 1. During printing, if the paper roll 6 vibrates or is unevenly fed during the paper feeding process, the roller 12 at the front end of the cover opening lever 8 remains in contact with the paper, and the lever spring 10 provides a damping effect to the cover opening lever 8, ensuring that the paper entering the printer body 1 is flat and ensuring stable print quality. After printing, the paper enters the three-proof nozzle module 15. If the user accidentally touches or blocks the paper outlet with their hand, the paper will arch and trigger the sensor of the printer body 1, thus temporarily stopping printing. When the user releases their hand and the paper outlet is no longer blocked, the printer will print the unfinished document content. When the user pulls the paper with their hand, the paper will press down and trigger the sensor of the printer body 1, thus temporarily stopping printing. When the user releases their hand and the paper is no longer pulled, the printer will print the unfinished document content. If the user does not remove the document, the printer will temporarily stop printing the next document to be printed. When the user removes the document, the printer will print the unfinished document content.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. The various components mentioned in this utility model are common technologies in the existing field. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A printer that provides stable printing, characterized in that, The printer includes a printer body (1) and a support frame (2) on which it is mounted. The support frame (2) is slidably mounted on a base frame (3). A paper tray support (4) is fixedly mounted on the base frame (3). A paper roll (6) is mounted on the paper tray support (4) via a paper threading shaft (5). A top cover (7) is mounted on the printer body (1). A cover opening wrench (8) is mounted on the side of the top cover (7) near the paper roll (6) via a wrench shaft (9). A wrench torsion spring (10) is sleeved on the wrench shaft (9). A roller (12) is mounted on the front end of the cover opening wrench (8) via a roller (12) shaft (11). A plug (16) is mounted on the support frame (2). An adjustment groove (17) that mates with the plug (16) is mounted on the base frame (3).

2. The printer for stable printing according to claim 1, characterized in that, One end of the top cover (7) is connected to the printer body (1) via a bearing, and the other end is provided with a cover opening wrench (8). The paper strip of the paper roll (6) extends into the bottom of the top cover (7) and is printed on it by the thermal print head module inside the printer body (1).

3. A printer for stable printing according to claim 2, characterized in that, The cover opening wrench (8) has an L-shaped cross section and a through hole at the connection of its two sides. The cover opening wrench (8) is sleeved on the wrench shaft (9) through the through hole. The long side of the cover opening wrench (8) is provided with a boss for mounting rollers (12).

4. A printer for stable printing according to claim 3, characterized in that, The upper cover (7) has a latching shaft (13) and a moving groove for the latching shaft (13) to move. The latching shaft (13) is located below the cover opening lever (8). The printer body (1) has a locking block that cooperates with the latching shaft (13). The locking block is located below the upper cover (7). The locking block has a semi-enclosed arc-shaped receiving space. The opening of the locking block faces the paper roll (6). The two ends of the latching shaft (13) cooperate with the arc-shaped receiving space of the locking block to lock the upper cover (7) and the printer body (1).

5. A printer for stable printing according to claim 4, characterized in that, The printer body (1) is connected to the support frame (2) by bolts. The base frame (3) is stepped. The paper tray support (4) is fixedly installed on the higher horizontal side of the base frame (3). The support frame (2) is located on the lower horizontal side of the base frame (3). The support frame (2) is provided with a plug (16) on the side near the vertical side of the base frame (3). The vertical side of the base frame (3) is provided with an adjustment groove (17). The plug (16) has several through holes for screw insertion. The outer side of the adjustment groove (17) has through holes for screw insertion.

6. A printer for stable printing according to claim 5, characterized in that, The short side of the opening wrench (8) rotates around the wrench shaft (9) and contacts the buckle shaft (13).

7. A printer for stable printing according to claim 6, characterized in that, The printer body (1) contains a rubber roller (14) for driving the paper belt of the paper roll (6) to rotate.

8. A printer for stable printing according to claim 7, characterized in that, The paper roll (6) has a through hole in the middle and is fitted onto the paper shaft (5) through the through hole.

9. A printer for stable printing according to claim 8, characterized in that, The printer body (1) has a three-proof nozzle module (15) on one side of the paper output end.

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