Thermal transfer printer thermal transfer ribbon shaft transmission mechanism

Abstract

The utility model relates to the technical field of thermal transfer printers, and discloses a thermal transfer printer thermal transfer ribbon shaft transmission mechanism which comprises a machine body and a thermal transfer ribbon shaft, the driving end of the machine body is fixedly connected with an installation disc, one end, close to the installation disc, of the thermal transfer ribbon shaft is fixedly connected with a connecting strip, and T-shaped grooves are formed in the front face and the back face of the connecting strip. The inner wall of the T-shaped groove is slidably connected with a T-shaped insertion block. According to the thermal transfer printer thermal transfer ribbon shaft transmission mechanism, when a thermal transfer ribbon shaft is installed, a connecting strip is directly inserted into a containing groove, at the moment, the cambered surface of a T-shaped insertion block is stressed and stored in a T-shaped groove, when the T-shaped insertion block moves to a positioning groove, the T-shaped insertion block is inserted into the positioning groove under the elastic force of a first spring, and then installation of the thermal transfer ribbon shaft can be completed; the T-shaped push block can push the T-shaped insertion block into the T-shaped groove, at the moment, the T-shaped insertion block is separated from the positioning groove, the thermal transfer ribbon shaft can be taken down, and compared with an existing mode that the thermal transfer ribbon shaft is inserted from the side face, installation is more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of thermal transfer printers, and more specifically to a carbon ribbon shaft transmission mechanism of a thermal transfer printer. Background Art

[0002] The thermal transfer printer is mainly composed of a roller, a heating tube and a transmission system. The transmission system includes multiple components such as a motor, a reducer, and a sprocket.

[0003] The motor drives the rotating shaft installed on the inner wall of the body to rotate, and then drives the mounting disk installed on the rotating shaft to rotate, thereby driving the carbon ribbon shaft to rotate. The existing installation of the carbon ribbon shaft on the mounting disk is to use the elastic force of the spring to push the carbon ribbon shaft to the mounting disk, install a card block on the mounting disk, and the end face of the carbon ribbon shaft is provided with a card slot adapted to the card block. The card slot and the card block on the carbon ribbon shaft are assembled by the elastic force of the spring to complete the installation. This installation method requires pulling the spring and inserting the carbon ribbon shaft from the side of the mounting disk, which is inconvenient to install. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the utility model provides a carbon ribbon shaft transmission mechanism for a thermal transfer printer to solve the problems existing in the above-mentioned background technology.

[0005] The utility model provides the following technical solutions: a carbon ribbon shaft transmission mechanism of a thermal transfer printer, comprising a machine body and a carbon ribbon shaft, wherein a driving end of the machine body is fixedly connected to a mounting plate, an end of the carbon ribbon shaft close to the mounting plate is fixedly connected to a connecting strip, a T-shaped groove is provided on the front and back sides of the connecting strip, a T-shaped plug is slidably connected to the inner wall of the T-shaped groove, a first spring is fixedly connected to the opposite surface of the T-shaped plug and the T-shaped plug, the lower surface of the T-shaped plug is arc-shaped, a placement groove is provided on the side of the mounting plate, the surface of the connecting strip overlaps the inner wall of the placement groove, a positioning groove is provided on the inner wall of the placement groove, and the surface of the T-shaped plug overlaps the inner wall of the positioning groove;

[0006] A cavity is provided inside the mounting plate, and a T-shaped push block is slidably connected to the inner wall of the cavity. A connecting port is provided on the inner wall of the cavity and is connected to the inner wall of the positioning groove. The surface of the T-shaped push block overlaps with the inner wall of the connecting port. A second spring is fixedly connected to the opposite surface of the T-shaped push block and the cavity. A T-shaped push rod is fixedly connected to the side of the T-shaped push block away from the second spring. A sliding hole is provided on the surface of the mounting plate, and the surface of the T-shaped push rod overlaps with the inner wall of the sliding hole.

[0007] The scheme is further that an installation cavity is provided inside the carbon ribbon shaft, and the inner wall of the installation cavity is rotatably connected with a threaded rod, and the side of the carbon ribbon shaft is provided with a rotating hole, the surface of the threaded rod is rotatably connected to the inner wall of the rotating hole, and the surface of the threaded rod is threadedly connected to a movable column, the inner wall of the installation cavity is fixedly connected to a limiting rod, and the side of the movable column is provided with a limiting hole, and the surface of the limiting rod overlaps the inner wall of the limiting hole, and the surface of the carbon ribbon shaft is provided with an installation opening, and the inner wall of the installation opening is slidably connected with an arc surface positioning block, and a side of the arc surface positioning block close to the movable column is fixedly connected with an arc surface overlapping block, and the arc surface overlapping block and the opposite surface of the installation cavity are fixedly connected with a third spring, the surface of the movable column is provided with a trapezoidal guide groove, and the arc surface of the arc surface overlapping block overlaps the inner wall of the trapezoidal guide groove, the end face of the threaded rod is fixedly connected with a turntable, and the surface of the turntable is fixedly connected with an operating block, and the outer arc surface of the arc surface positioning block and the outer surface of the carbon ribbon shaft are located on the same curved surface.

[0008] Technical effects and advantages of the utility model:

[0009] 1. The carbon ribbon shaft transmission mechanism of the thermal transfer printer, when installing the carbon ribbon shaft, directly insert the connecting bar into the placement groove, at this time, the arc surface of the T-shaped plug block is forced to be accommodated in the T-shaped groove, when the T-shaped plug block moves to the positioning groove, at this time, the T-shaped plug block is inserted into the positioning groove under the elastic force of the first spring, and the installation of the carbon ribbon shaft can be completed, and the T-shaped push block is pressed, and the T-shaped push block can push the T-shaped plug block into the T-shaped groove. At this time, the T-shaped plug block is separated from the positioning groove, and the carbon ribbon shaft can be removed. Compared with the existing method of inserting the carbon ribbon shaft from the side, the installation is more convenient.

[0010] 2. The carbon ribbon shaft transmission mechanism of the thermal transfer printer is that after the carbon ribbon shaft is inserted into the carbon ribbon tube, the turntable is rotated, and the turntable drives the threaded rod to rotate. Under the limit of the limit rod, the movable column moves, and the trapezoidal guide groove on the movable column moves. At this time, the arc surface overlap block moves up, and the upward-moving arc surface overlap block will push the arc surface positioning block out of the installation port, and then press against the inner wall of the carbon ribbon tube. When removing the carbon ribbon tube, the turntable can be reversed, and the movable column moves in the opposite direction. At this time, the arc surface overlap block will return to its position under the elastic force of the third spring, thereby making the arc surface positioning block away from the carbon ribbon tube, which is convenient for removing the carbon ribbon tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0012] Figure 2 It is a schematic diagram of the side section structure of the installation plate of the utility model.

[0013] Figure 3 It is a schematic diagram of the front section structure of the carbon ribbon shaft of the utility model.

[0014] Figure 4 It is a schematic diagram of the three-dimensional structure of the movable column of the utility model.

[0015] The accompanying drawings are marked as follows: 1 body, 2 ribbon shaft, 3 mounting plate, 4 connecting strip, 5 T-shaped plug, 6 first spring, 7 T-shaped push block, 8 second spring, 9 T-shaped push rod, 10 threaded rod, 11 moving column, 12 limiting rod, 13 arc surface positioning block, 14 arc surface overlapping block, 15 third spring, 16 turntable. DETAILED DESCRIPTION

[0016] A thermal transfer printer carbon ribbon shaft transmission mechanism, referring to Figure 1-4 , including a body 1 and a carbon ribbon shaft 2, the driving end of the body 1 is fixedly connected to a mounting plate 3, the end of the carbon ribbon shaft 2 close to the mounting plate 3 is fixedly connected to a connecting strip 4, the front and back sides of the connecting strip 4 are both provided with T-shaped grooves, the inner wall of the T-shaped groove is slidably connected with a T-shaped plug 5, the T-shaped plug 5 and the opposite surface of the T-shaped groove are fixedly connected with a first spring 6, the lower surface of the T-shaped plug 5 is arc-shaped, the side of the mounting plate 3 is provided with a placement groove, the surface of the connecting strip 4 overlaps the inner wall of the placement groove, the inner wall of the placement groove is provided with a positioning groove, and the surface of the T-shaped plug 5 overlaps the inner wall of the positioning groove.

[0017] A cavity is provided inside the mounting plate 3, and a T-shaped push block 7 is slidably connected to the inner wall of the cavity. A connecting port connected to the interior of the positioning groove is provided on the inner wall of the cavity, and the surface of the T-shaped push block 7 overlaps the inner wall of the connecting port. A second spring 8 is fixedly connected to the opposite surface of the T-shaped push block 7 and the cavity, and a T-shaped push rod 9 is fixedly connected to the side of the T-shaped push block 7 away from the second spring 8. A sliding hole is provided on the surface of the mounting plate 3, and the surface of the T-shaped push rod 9 overlaps the inner wall of the sliding hole.

[0018] When installing the carbon ribbon shaft 2, the connecting strip 4 is directly inserted into the placement groove. At this time, the arc surface of the T-shaped plug 5 is force-received in the T-shaped groove. When the T-shaped plug 5 moves to the positioning groove, the T-shaped plug 5 is inserted into the positioning groove under the elastic force of the first spring 6, and the installation of the carbon ribbon shaft 2 can be completed. Press the T-shaped push block 7, and the T-shaped push block 7 can push the T-shaped plug 5 into the T-shaped groove. At this time, the T-shaped plug 5 is out of the positioning groove, and the carbon ribbon shaft 2 can be removed. Compared with the existing method of inserting the carbon ribbon shaft 2 from the side, the installation is more convenient.

[0019] An installation cavity is opened inside the carbon ribbon shaft 2, and a threaded rod 10 is rotatably connected to the inner wall of the installation cavity. A rotating hole is opened on the side of the carbon ribbon shaft 2, and the surface of the threaded rod 10 is rotatably connected to the inner wall of the rotating hole. A movable column 11 is threadedly connected to the surface of the threaded rod 10, and a limiting rod 12 is fixedly connected to the inner wall of the installation cavity. A limiting hole is opened on the side of the movable column 11, and the surface of the limiting rod 12 overlaps the inner wall of the limiting hole. An installation opening is opened on the surface of the carbon ribbon shaft 2, and an arc-surface positioning block 13 is slidably connected to the inner wall of the installation opening.

[0020] A side of the arc surface positioning block 13 close to the movable column 11 is fixedly connected to a arc surface overlapping block 14, and the arc surface overlapping block 14 and the opposite side of the installation cavity are fixedly connected to a third spring 15. A trapezoidal guide groove is provided on the surface of the movable column 11, and the arc surface of the arc surface overlapping block 14 overlaps the inner wall of the trapezoidal guide groove. A turntable 16 is fixedly connected to the end face of the threaded rod 10, and an operating block is fixedly connected to the surface of the turntable 16. The outer arc surface of the arc surface positioning block 13 and the outer surface of the carbon ribbon shaft 2 are located on the same curved surface.

[0021] After the carbon ribbon shaft 2 is inserted into the carbon ribbon tube, the turntable 16 is rotated, and the turntable 16 drives the threaded rod 10 to rotate. Under the limit of the limit rod 12, the movable column 11 moves, and the trapezoidal guide groove on the movable column 11 moves. At this time, the arc surface overlap block 14 moves up, and the upward arc surface overlap block 14 will push the arc surface positioning block 13 out of the installation opening, and then press against the inner wall of the carbon ribbon tube. When removing the carbon ribbon tube, the turntable 16 can be reversed, and the movable column 11 moves in the opposite direction. At this time, the arc surface overlap block 14 will return to its position under the elastic force of the third spring 15, so that the arc surface positioning block 13 is away from the carbon ribbon tube, which is convenient for removing the carbon ribbon tube.

[0022] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A carbon ribbon shaft transmission mechanism for a thermal transfer printer, comprising a body (1) and a carbon ribbon shaft (2), characterized in that: The driving end of the machine body (1) is fixedly connected to a mounting plate (3), and one end of the carbon ribbon shaft (2) close to the mounting plate (3) is fixedly connected to a connecting strip (4), the front and back sides of the connecting strip (4) are both provided with T-shaped grooves, the inner wall of the T-shaped groove is slidably connected to a T-shaped plug-in block (5), the T-shaped plug-in block (5) and the opposite surface of the T-shaped groove are fixedly connected to a first spring (6), the lower surface of the T-shaped plug-in block (5) is arc-shaped, a placement groove is provided on the side of the mounting plate (3), the surface of the connecting strip (4) overlaps the inner wall of the placement groove, a positioning groove is provided on the inner wall of the placement groove, and the surface of the T-shaped plug-in block (5) overlaps the inner wall of the positioning groove; The mounting plate (3) has a cavity formed inside, the inner wall of the cavity is slidably connected to a T-shaped push block (7), the inner wall of the cavity has a communication port connected to the inside of the positioning groove, the surface of the T-shaped push block (7) overlaps the inner wall of the communication port, the surface of the T-shaped push block (7) opposite to the cavity is fixedly connected to a second spring (8), the surface of the T-shaped push block (7) away from the second spring (8) is fixedly connected to a T-shaped push rod (9), the surface of the mounting plate (3) has a sliding hole formed, and the surface of the T-shaped push rod (9) overlaps the inner wall of the sliding hole.

2. A thermal transfer printer carbon ribbon shaft transmission mechanism according to claim 1, characterized in that: The carbon ribbon shaft (2) has an installation cavity formed inside, the inner wall of the installation cavity is rotatably connected to a threaded rod (10), a side surface of the carbon ribbon shaft (2) is provided with a rotation hole, and the surface of the threaded rod (10) is rotatably connected to the inner wall of the rotation hole.

3. A thermal transfer printer carbon ribbon shaft transmission mechanism according to claim 2, characterized in that: The surface of the threaded rod (10) is threadedly connected to a movable column (11), the inner side wall of the installation cavity is fixedly connected to a limiting rod (12), a limiting hole is provided on the side of the movable column (11), and the surface of the limiting rod (12) overlaps the inner wall of the limiting hole.

4. A thermal transfer printer carbon ribbon shaft transmission mechanism according to claim 3, characterized in that: The surface of the carbon ribbon shaft (2) is provided with a mounting opening, the inner wall of the mounting opening is slidably connected to a curved surface positioning block (13), and a curved surface overlapping block (14) is fixedly connected to a surface of the curved surface positioning block (13) close to the movable column (11).

5. A thermal transfer printer carbon ribbon shaft transmission mechanism according to claim 4, characterized in that: The arc-surface overlap block (14) and the surface opposite to the installation cavity are fixedly connected with a third spring (15).

6. A thermal transfer printer carbon ribbon shaft transmission mechanism according to claim 5, characterized in that: A trapezoidal guide groove is provided on the surface of the movable column (11), and the arc surface of the arc surface overlapping block (14) overlaps the inner wall of the trapezoidal guide groove.

7. A thermal transfer printer carbon ribbon shaft transmission mechanism according to claim 6, characterized in that: The end surface of the threaded rod (10) is fixedly connected to a rotating disk (16), and the surface of the rotating disk (16) is fixedly connected to an operating block.

8. A thermal transfer printer carbon ribbon shaft transmission mechanism according to claim 7, characterized in that: The outer arc surface of the arc surface positioning block (13) and the outer surface of the carbon ribbon shaft (2) are located on the same curved surface.

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