Thermal printing head rack structure

Abstract

The utility model relates to the field of thermal printers, and discloses a thermal printing head rack structure which comprises a rack, rectangular grooves are formed in the two ends of the top face of the rack correspondingly, rectangular blocks are arranged in the two rectangular grooves correspondingly, a shaft rod is arranged between the two rectangular blocks in a penetrating mode through a bearing, and a printing head assembly is arranged on the outer wall of the shaft rod through a bearing sleeve. The outer wall of the shaft rod located in the printing head assembly is sleeved with a rubber roller, a motor is arranged on the inner bottom face of the rack, the output end of the motor penetrates through the rack and extends outwards to be sleeved with a first gear, and the first gear is connected with a second gear in an engaged mode. When the thermal printing head rack structure is assembled, firstly, the three clamping plates are sequentially clamped in the three clamping grooves, and then the two rectangular blocks are pressed in the two rectangular grooves, so that a printing head assembly and a rubber roller can be quickly and conveniently mounted on the rack, accurate positioning among the printing head assembly, the rubber roller and a roller cylinder is ensured, and the printing head assembly and the rubber roller can be conveniently mounted on the rack. And the control machine is easy to operate to ensure the printing effect.

Description

Technical Field

[0001] This application relates to the field of thermal printers, and more particularly to a thermal print head frame structure. Background Art

[0002] Currently, the positioning structure of the thermal print head of traditional barcode printers includes a print head fixing plate. The print head fixing plate is closely fitted with the print head positioning shaft, and the manufacturing errors of related parts are adjusted by the screws on the print head positioning shaft to ensure the distance between the thermal print head and the paper feed rubber roller. However, this design has a large assembly difficulty, a long adjustment time during mass production, and it is not easy for installers to determine whether the position between the thermal print head and the paper feed rubber roller is in place. It can only be determined by printing a test page. As for those who have no experience in judging the printing effect, even with a print test page, it is difficult to accurately judge whether the printing effect is the best. In addition, since the thermal print head is a consumable item, it needs to be frequently replaced, and whether the position between the replaced print head and the paper feed rubber roller is in place also depends on the experience and judgment level of the operator, so it is very difficult to control. Utility Model Content

[0003] In order to solve the problem that since the thermal print head is a consumable item, it needs to be frequently replaced, and whether the position between the replaced print head and the paper feed rubber roller is in place also depends on the experience and judgment level of the operator, so it is very difficult to control, this application provides a thermal print head frame structure.

[0004] A thermal print head frame structure provided by this application adopts the following technical solutions:

[0005] A thermal print head frame structure includes a frame. Rectangular grooves are opened at both ends of the top surface of the frame. Rectangular blocks are arranged inside the two rectangular grooves. A shaft rod is passed through the two rectangular blocks through bearings. A print head assembly is sleeved on the outer wall of the shaft rod through a bearing. A rubber roller is sleeved on the outer wall of the shaft rod located inside the print head assembly. A partition is arranged inside the frame. Three card slots are opened on the surface of the partition opposite to the print head assembly. Card plates are arranged inside the three card slots. The card plates are connected with the print head assembly through springs.

[0006] Preferably, a motor is arranged on the inner bottom surface of the frame. The output end of the motor penetrates through the frame and extends outwards to be sleeved with a first gear. The first gear is meshed with a second gear. The second gear is meshed with a third gear. The third gear is meshed with a fourth gear.

[0007] Preferably, the fourth gear is sleeved on the outer wall of the shaft rod, the second gear is penetrated by a rotating rod, the rotating rod is rotatably connected to the frame, the third gear is penetrated by a round rod, the round rod is rotatably connected to the frame, and a roller is sleeved on the outer wall of the round rod, and the roller is located below the rubber roller.

[0008] Preferably, the motor is detachably arranged on the inner bottom surface of the frame by screws.

[0009] In summary, the present application includes the following beneficial technical effects:

[0010] When assembling the thermal printer head frame structure, first, the three clamping plates are sequentially clamped inside the three clamping grooves, and then the two rectangular blocks are pressed inside the two rectangular grooves, so that the printer head assembly and the rubber roller can be quickly and conveniently installed on the frame, ensuring the accurate positioning among the printer head assembly, the rubber roller and the roller, and then it is easy to operate and control the machine to ensure the printing effect. Description of the Drawings

[0011] Figure 1 is the main structural view of the embodiment of the application;

[0012] Figure 2 is the top structural view of the embodiment of the application;

[0013] Figure 3 is the exploded view of the structure of the embodiment of the application.

[0014] Description of the reference numerals: 1, frame; 2, first gear; 3, second gear; 4, rotating rod; 5, third gear; 6, round rod; 7, rubber roller; 8, roller; 9, motor; 10, shaft rod; 11, partition board; 12, clamping plate; 13, spring; 14, fourth gear; 15, printer head assembly; 16, clamping groove; 17, rectangular groove; 18, rectangular block. Detailed Description of the Embodiment

[0015] The following will further describe the present application in detail Figures 1-3 with reference to the attached drawings.

[0016] The embodiment of the present application discloses a thermal printer head frame structure. Refer to Figures 1-3, including a frame 1. Rectangular grooves 17 are provided at both ends of the top surface of the frame 1. Rectangular blocks 18 are slidably arranged inside the two rectangular grooves 17. A shaft rod 10 is passed through between the two rectangular blocks 18 by means of a bearing. A printing head assembly 15 is sleeved on the outer wall of the shaft rod 10 through a bearing. A rubber roller 7 is fixedly sleeved on the outer wall of the shaft rod 10 located inside the printing head assembly 15. A partition plate 11 is fixedly arranged inside the frame 1. Three card slots 16 are provided on the surface of the partition plate 11 opposite to the printing head assembly 15. Card plates 12 are arranged inside the three card slots 16. The card plates 12 are fixedly connected to the printing head assembly 15 through springs 13. When assembling the structure of the thermal printing head frame 1, first, the three card plates 12 are sequentially clamped inside the three card slots 16, and then the two rectangular blocks 18 are pressed inside the two rectangular grooves 17, so that the printing head assembly 15 and the rubber roller 7 can be quickly and conveniently installed on the frame 1, ensuring the accurate positioning among the printing head assembly 15, the rubber roller 7 and the roller 8, and then it is easy to operate the control machine to ensure the printing effect.

[0017] Referring to Figures 1-2 , a motor 9 is detachably arranged on the inner bottom surface of the frame 1 through screws. The output end of the motor 9 penetrates through the frame 1 and extends outwards to be fixedly sleeved with a first gear 2. The first gear 2 is meshed with a second gear 3. The second gear 3 is meshed with a third gear 5. The third gear 5 is meshed with a fourth gear 14. The fourth gear 14 is fixedly sleeved on the outer wall of the shaft rod 10. A rotating rod 4 is fixedly passed through the second gear 3. The rotating rod 4 is rotatably connected to the frame 1. A round rod 6 is fixedly passed through the third gear 5. The round rod 6 is rotatably connected to the frame 1, and a roller 8 is fixedly sleeved on the outer wall of the round rod 6. The roller 8 is located below the rubber roller 7. The output end of the motor 9 drives the first gear 2 to rotate. The rotation of the first gear 2 drives the second gear 3 and the rotating rod 4 to rotate. The rotation of the second gear 3 drives the third gear 5, the round rod 6 and the roller 8 to rotate. The rotation of the third gear 5 drives the fourth gear 14 and the rubber roller 7 to rotate, realizing the thermal printing operation of the device.

[0018] The implementation principle of a thermal printing head frame structure in an embodiment of the present application is as follows: When in use, when assembling the structure of the thermal printing head frame 1, first, the three card plates 12 are sequentially clamped inside the three card slots 16, and then the two rectangular blocks 18 are pressed inside the two rectangular grooves 17, so that the printing head assembly 15 and the rubber roller 7 can be quickly and conveniently installed on the frame 1, ensuring the accurate positioning among the printing head assembly 15, the rubber roller 7 and the roller 8, and then it is easy to operate the control machine to ensure the printing effect. Moreover, the output end of the motor 9 drives the first gear 2 to rotate. The rotation of the first gear 2 drives the second gear 3 and the rotating rod 4 to rotate. The rotation of the second gear 3 drives the third gear 5, the round rod 6 and the roller 8 to rotate. The rotation of the third gear 5 drives the fourth gear 14 and the rubber roller 7 to rotate, realizing the thermal printing operation of the device.

[0019] The following points should be noted: First, in the description of this application, it should be noted that unless otherwise specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. It can be a mechanical connection or an electrical connection, or it can be the communication inside two components. It can be directly connected. "Upper", "lower", "left", "right", etc. are only used to represent relative position relationships. When the absolute position of the object being described changes, the relative position relationship may change;

[0020] Second, in the attached drawings of the disclosed embodiments of the present utility model, only the structures related to the disclosed embodiments are involved. For other structures, reference can be made to the usual designs. Without conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0021] Finally: The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

[0022] The above are all the preferred embodiments of this application and do not limit the protection scope of this application accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application shall be covered within the protection scope of this application.

Claims

1. A thermal print head frame structure, comprising a frame (1), characterized in that: Rectangular grooves (17) are provided at both ends of the top surface of the frame (1), rectangular blocks (18) are provided inside the two rectangular grooves (17), a shaft (10) is passed through the two rectangular blocks (18) via a bearing, a print head assembly (15) is provided on the outer wall of the shaft (10) via a bearing sleeve, a rubber roller (7) is sleeved on the outer wall of the shaft (10) located in the print head assembly (15), a partition (11) is provided inside the frame (1), three card slots (16) are provided on a side of the partition (11) opposite to the print head assembly (15), a card plate (12) is carded inside the three card slots (16), and the card plate (12) is connected to the print head assembly (15) via a spring (13).

2. A thermal print head frame structure according to claim 1, characterized in that: The inner bottom surface of the frame (1) is provided with a motor (9), the output end of the motor (9) passes through the frame (1) and is extended outwardly to be sleeved with a first gear (2), the first gear (2) is meshedly connected with a second gear (3), the second gear (3) is meshedly connected with a third gear (5), and the third gear (5) is meshedly connected with a fourth gear (14).

3. A thermal print head frame structure according to claim 2, characterized in that: The fourth gear (14) is sleeved on the outer wall of the shaft (10); the second gear (3) is penetrated by a rotating rod (4); the rotating rod (4) is rotatably connected to the frame (1); the third gear (5) is penetrated by a round rod (6); the round rod (6) is rotatably connected to the frame (1); and the outer wall of the round rod (6) is sleeved by a roller (8); the roller (8) is located below the rubber roller (7).

4. The thermal print head frame structure according to claim 2, characterized in that: The motor (9) is detachably arranged on the inner bottom surface of the frame (1) by means of screws.

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