Printer capable of controlling printing length of consumables

Abstract

The utility model provides a printer capable of controlling the printing length of consumables, which relates to the field of printer equipment and comprises a double-color thermal transfer ribbon assembly, a printing head, a printing rubber roller and a transmission mechanism used for driving the double-color thermal transfer ribbon assembly to wind and unwind a thermal transfer ribbon, a paper feeding channel for a thermal transfer ribbon and label paper to pass through is formed between the printing head and the printing rubber roller, a torsional spring is arranged at the end of the double-color thermal transfer ribbon assembly, one end of the torsional spring is connected with a transmission mechanism, the transmission mechanism rotates to drive the torsional spring to be wound and unwound, and in the process that the transmission mechanism drives the double-color thermal transfer ribbon assembly to rotate, the label paper passes through the space between the printing head and the printing rubber roller. Label paper passes through the paper feeding channel along with rotation of the printing rubber roller, when the transmission mechanism continuously rotates and the torsion spring is contracted to a holding state, the transmission mechanism cannot drive the double-color thermal transfer ribbon assembly to rotate and is in an idling state, conveying of the label paper is stopped, and control over the printing length of label paper consumables is facilitated to a certain degree.

Description

Technical Field

[0001] The utility model relates to the field of printer equipment, in particular to a printer capable of controlling the printing length of consumables. Background Art

[0002] In the printer, paper guide baffles are set on both sides of the printer to guide the paper into the printer. The paper guide baffle is generally composed of left and right baffles. One baffle is fixed on the printer body, and the other baffle can be moved along the horizontal axis inside the printer according to the different widths of the consumable paper used, thereby changing the effective width of the paper guide baffle.

[0003] The movable baffle component of the existing baffle is generally a separated structure, that is, it is divided into an outer paper guide baffle and an inner paper guide baffle at the paper roll and the paper feed inside the printer. When in use, the outer paper guide baffle and the inner paper guide baffle are moved to the left and right sides of the printer to appropriate positions according to the width of the paper roll, so as to be combined into a paper guide with a fixed width to guide the paper into the printer. The movable and adjustable paper guide baffle of this structure is inconvenient to use and is prone to problems such as paper jams caused by inconsistent movement positions of the inner and outer paper guide baffles.

[0004] Therefore, it is necessary to provide a new printer capable of controlling the printing length of consumables to solve the above technical problems. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a printer capable of controlling the printing length of consumables.

[0006] The printer capable of controlling the printing length of consumables provided by the utility model comprises a two-color carbon ribbon assembly, a print head, a printing rubber roller and a transmission mechanism for driving the two-color carbon ribbon assembly to retract and release the carbon ribbon, wherein a paper feeding channel for the carbon ribbon and label paper to pass through is formed between the print head and the printing rubber roller, a torsion spring is provided at the end of the two-color carbon ribbon assembly, one end of the torsion spring is connected to the transmission mechanism, and the transmission mechanism rotates to drive the torsion spring to retract and release;

[0007] The print head includes a driving roller, a connecting plate and a pressure plate rotatably mounted on the inner side of a casing, a rotating drum is fixedly mounted on the outer surface of the driving roller, a plurality of pads are provided on the outer surface of the rotating drum, one of the pads is in contact with the bottom of the connecting plate, a compression spring is provided between the connecting plate and the pressure plate, the connecting plate and the pressure plate are rotatably connected via a rotating shaft, and the top of the pressure plate is in contact with the bottom of the printing rubber roller.

[0008] Furthermore, the two-color carbon ribbon assembly includes a support seat and a reel and a reel arranged on the support seat, the reel and the reel are arranged parallel to each other, and the reel and the reel are used to wind the carbon ribbon.

[0009] Furthermore, two cylindrical sleeves parallel to each other are provided on the support seat, and the unwinding shaft and the rewinding shaft are respectively sleeved in the two sleeves. The two sleeves are provided with gaps along the axial direction on the opposite side walls for the carbon ribbon to pass through, and the transmission mechanism drives the two sleeves to rotate synchronously.

[0010] Furthermore, the transmission mechanism includes a drive motor and a reduction gear set, the drive motor is fixedly installed on the outside of the casing, the rotor end of the drive motor is fixedly connected to the reduction gear set, and the reduction gear set is respectively connected to the printing rubber roller, the unwinding shaft and the winding shaft.

[0011] Furthermore, a paper guide is provided on the housing, and the paper guide is located at the end of the printing rubber roller. The longitudinal section of the paper guide is arc-shaped, and ribs are provided along the arc surface of the paper guide.

[0012] Furthermore, the housing is also provided with an RFID sensor for detecting the carbon ribbon.

[0013] Compared with the related art, the printer capable of controlling the printing length of consumables provided by the utility model has the following beneficial effects:

[0014] 1. In the utility model, when the transmission mechanism drives the two-color carbon ribbon assembly to rotate, the label paper passes between the print head and the print rubber roller, and the label paper passes through the paper feed channel as the print rubber roller rotates. When the transmission mechanism continues to rotate and the torsion spring contracts to a tightened state, the transmission mechanism cannot drive the two-color carbon ribbon assembly to rotate and is in an idling state, and the label paper stops being transported, which facilitates the control of the printing length of the label paper consumables to a certain extent.

[0015] 2. In the utility model, the printing rubber roller and the two-color carbon ribbon assembly rotate synchronously in the same direction, and the pressure plate is tightly attached to the surface of the printing rubber roller through a compression spring. When the label paper consumable stops being transported, the squeezing force between the pressure plate and the printing rubber roller makes it difficult for the label paper to deviate, thereby avoiding paper jams. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The overall structure of the printer capable of controlling the printing length of consumables provided by the utility model is schematically shown. Figure 1 ;

[0017] Figure 2 The overall structure of the printer capable of controlling the printing length of consumables provided by the utility model is schematically shown. Figure 2 ;

[0018] Figure 3 The internal structure of the printer capable of controlling the printing length of consumables provided by the utility model is schematically shown. Figure 1 ;

[0019] Figure 4 The internal structure of the printer capable of controlling the printing length of consumables provided by the utility model is schematically shown. Figure 2 ;

[0020] Figure 5 A schematic diagram of the structure of the print head provided by the utility model;

[0021] Figure 6 A schematic diagram of the structure of the transmission mechanism, the two-color carbon ribbon assembly and the printing rubber roller provided by the utility model;

[0022] Figure 7 A schematic diagram of the structure of a dual-color carbon ribbon assembly provided by the utility model;

[0023] Figure 8 The structure diagram of the paper guide and printing rubber roller provided by the utility model Figure 1 ;

[0024] Fig. 9 The structure diagram of the paper guide and printing rubber roller provided by the utility model Figure 2 .

[0025] Numbers in the figure: 1. Casing; 2. Print head; 3. Print rubber roller; 4. Torsion spring; 5. Drive roller; 6. Connecting plate; 7. Pressure plate; 8. Rotating drum; 9. Pad; 10. Compression spring; 11. Support seat; 12. Unwinding shaft; 13. Rewinding shaft; 14. Cylindrical sleeve; 15. Drive motor; 16. Reduction gear set; 17. Paper guide; 18. Rib; 19. Rotating shaft; 20. RFID sensor. DETAILED DESCRIPTION

[0026] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.

[0027] Please refer to Figure 1-Figure 9 ,in, Figure 1 The overall structure of the printer capable of controlling the printing length of consumables provided by the utility model is schematically shown. Figure 1 ; Figure 2 The overall structure of the printer capable of controlling the printing length of consumables provided by the utility model is schematically shown. Figure 2 ; Figure 3 The internal structure of the printer capable of controlling the printing length of consumables provided by the utility model is schematically shown. Figure 1 ; Figure 4 The internal structure of the printer capable of controlling the printing length of consumables provided by the utility model is schematically shown. Figure 2 ; Figure 5 A schematic diagram of the structure of the print head provided by the utility model; Figure 6 A schematic diagram of the structure of the transmission mechanism, the two-color carbon ribbon assembly and the printing rubber roller provided by the utility model; Figure 7 A schematic diagram of the structure of a dual-color carbon ribbon assembly provided by the utility model; Figure 8 The structure diagram of the paper guide and printing rubber roller provided by the utility model Figure 1 ; Fig. 9 The structure diagram of the paper guide and printing rubber roller provided by the utility model Figure 2 .

[0028] In the specific implementation process, Figure 1-Figure 9 As shown, the printer capable of controlling the printing length of consumables comprises a two-color carbon ribbon assembly, a print head 2, a print rubber roller 3 and a transmission mechanism installed inside a housing 1, the transmission mechanism is used to drive the print rubber roller 3 and the two-color carbon ribbon assembly to retract and release the carbon ribbon, a paper feeding channel for the carbon ribbon and label paper to pass through is formed between the print head 2 and the print rubber roller 3, a torsion spring 4 is provided at the end of the two-color carbon ribbon assembly, one end of the torsion spring 4 is connected to the transmission mechanism, and the transmission mechanism rotates to drive the torsion spring 4 to retract and release;

[0029] It should be noted that when the transmission mechanism drives the two-color carbon ribbon assembly to rotate, the label paper passes between the print head 2 and the print rubber roller 3, and the label paper passes through the paper feed channel as the print rubber roller 3 rotates. When the transmission mechanism continues to rotate and the torsion spring 4 contracts to a tightened state, the transmission mechanism cannot drive the two-color carbon ribbon assembly to rotate and is in an idling state, and the label paper stops being transported, which facilitates the control of the printing length of the label paper consumables to a certain extent.

[0030] refer to Figure 5 As shown, the print head 2 includes a driving roller 5, a connecting plate 6 and a pressure plate 7 rotatably mounted on the inner side of the casing 1. A rotating drum 8 is fixedly mounted on the outer surface of the driving roller 5. A plurality of pads 9 are provided on the outer surface of the rotating drum 8, one of the pads 9 is in contact with the bottom of the connecting plate 6. A compression spring 10 is provided between the connecting plate 6 and the pressure plate 7. The connecting plate 6 and the pressure plate 7 are rotatably connected via a rotating shaft 19. The top of the pressure plate 7 is in contact with the bottom of the printing rubber roller 3. The pressure plate 7 is tightly attached to the surface of the printing rubber roller 3 via the compression spring 10. When the label paper consumable stops being transported, the squeezing force between the pressure plate 7 and the printing rubber roller 3 prevents the label paper from being easily deflected.

[0031] refer to Figure 6-Figure 7 As shown, the two-color carbon ribbon assembly includes a support base 11 and a reel 12 and a reel 13 arranged on the support base 11. The reel 12 and the reel 13 are arranged parallel to each other and are used to wind the carbon ribbon.

[0032] The housing 1 is also provided with an RFID sensor 20 for detecting the carbon ribbon. The RFID sensor 20 is a radio frequency identification technology. The RFID sensor 20 can be used to detect the usage of the carbon ribbon and other relevant information carried on the carbon ribbon. When the carbon ribbon is used up, the RFID sensor 20 will detect that it will no longer work, thereby reducing the friction loss and service life of the machine and the carbon ribbon consumables.

[0033] Two parallel cylindrical sleeves 14 are also provided on the support seat 11. The unwinding shaft 12 and the rewinding shaft 13 are respectively sleeved in the two sleeves. The two sleeves are provided with gaps for the carbon ribbon to pass through along the axial direction on the opposite side walls. The transmission mechanism drives the two sleeves to rotate synchronously, and the sleeves have the function of protecting the carbon ribbon.

[0034] refer to Figure 6 as well as Fig. 9 As shown, the transmission mechanism includes a driving motor 15 and a reduction gear set 16. The driving motor 15 is fixedly installed on the outside of the casing 1. The rotor end of the driving motor 15 is fixedly connected to the reduction gear set 16. The reduction gear set 16 is respectively connected to the printing rubber roller 3, the unwinding shaft 12 and the winding shaft 13. The driving motor 15 is started to drive the reduction gear set 16 to rotate. The reduction gear set 16 is a plurality of gears meshing for transmission, so that the printing rubber roller 3, the unwinding shaft 12 and the winding shaft 13 rotate synchronously in the same direction.

[0035] refer to Figure 8 As shown, the casing 1 is further provided with an arc-shaped paper guide 17, which is located at the end of the printing rubber roller 3. The longitudinal section of the paper guide 17 is in an arc shape, and ribs 18 are arranged along the arc surface of the paper guide 17. Since the paper guide 17 is in an arc shape, and the ribs 18 on the paper guide 17 are arranged along the arc surface of the paper guide 17, they are in an arc shape similar to the arc surface of the paper guide 17. When the paper is printed, it is in a straight state under the action of tension. Therefore, when the paper passes through the paper guide 17, the paper surface only contacts the top of the upper and lower ends of the ribs 18. In the middle area of ​​the paper guide 17, the paper is in a suspended state and does not contact the ribs 18. At this time, the contact between the paper and the ribs 18 is point-like contact.

[0036] The working principle provided by the utility model is as follows: when the printer is used, the driving motor 15 is started to drive the reduction gear set 16 to rotate, and the reduction gear set 16 is a plurality of gears meshing to transmit, so that the printing rubber roller 3, the unwinding shaft 12 and the winding shaft 13 rotate synchronously in the same direction. In the process of the transmission mechanism driving the two-color carbon ribbon assembly to rotate, the label paper passes between the print head 2 and the printing rubber roller 3, and the label paper passes through the paper feeding channel as the printing rubber roller 3 rotates. When the transmission mechanism continues to rotate and the torsion spring 4 contracts to a clamping state, the transmission mechanism cannot drive the two-color carbon ribbon assembly to rotate and is in an idling state, and the label paper stops being transported, which facilitates the control of the printing length of the label paper consumables to a certain extent, and then the label paper is taken out from the paper guide 17.

[0037] The circuits and controls involved in the present invention are all prior art and will not be described in detail here.

[0038] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A printer capable of controlling the printing length of consumables, characterized in that: It comprises a two-color carbon ribbon assembly installed inside a housing (1), a print head (2), a print rubber roller (3), and a transmission mechanism for driving the two-color carbon ribbon assembly to retract and release the carbon ribbon, wherein a torsion spring (4) is provided at the end of the two-color carbon ribbon assembly, and one end of the torsion spring (4) is connected to the transmission mechanism; The print head (2) comprises a driving roller (5) rotatably mounted on the inner side of the housing (1), a connecting plate (6) and a pressure plate (7); a rotating cylinder (8) is fixedly mounted on the outer surface of the driving roller (5); the rotating cylinder (8) is in contact with the bottom of the connecting plate (6); a compression spring (10) is provided between the connecting plate (6) and the pressure plate (7); the connecting plate (6) and the pressure plate (7) are rotatably connected via a rotating shaft (19); the top of the pressure plate (7) is in contact with the bottom of the printing rubber roller (3).

2. The printer capable of controlling the printing length of consumables according to claim 1, characterized in that: The outer surface of the rotating drum (8) is provided with a plurality of cushion blocks (9), one of the cushion blocks (9) being in contact with the bottom of the connecting plate (6).

3. The printer capable of controlling the printing length of consumables according to claim 2, characterized in that: The two-color carbon ribbon assembly comprises a support seat (11) and a reel (12) and a reel (13) arranged on the support seat (11); the reel (12) and the reel (13) are arranged parallel to each other; and the reel (12) and the reel (13) are used for winding the carbon ribbon.

4. The printer capable of controlling the printing length of consumables according to claim 3, characterized in that: The support seat (11) is also provided with two cylindrical shaft sleeves (14) parallel to each other, the unwinding shaft (12) and the rewinding shaft (13) are respectively sleeved in the two shaft sleeves, and the two shaft sleeves are provided with gaps for the carbon ribbon to pass through along the axial direction on the mutually opposite side walls, and the transmission mechanism drives the two shaft sleeves to rotate synchronously.

5. The printer capable of controlling the printing length of consumables according to claim 4, characterized in that: The transmission mechanism comprises a driving motor (15) and a reduction gear set (16); the driving motor (15) is fixedly mounted on the outside of the housing (1); the rotor end of the driving motor (15) is fixedly connected to the reduction gear set (16); and the reduction gear set (16) is respectively connected to the printing rubber roller (3), the unwinding shaft (12) and the winding shaft (13).

6. The printer capable of controlling the printing length of consumables according to claim 5, characterized in that: The housing (1) is also provided with a paper guide (17), the paper guide (17) is located at the end of the printing rubber roller (3), the longitudinal section of the paper guide (17) is arc-shaped, and ribs (18) are provided along the arc surface of the paper guide (17).

7. The printer capable of controlling the printing length of consumables according to claim 6, characterized in that: The housing (1) is also provided with an RFID sensor (20) for detecting the carbon ribbon.

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