Thermal printer core

Abstract

A thermal printer core, comprising a main machine and a paper hopper box arranged at the rear end of the main machine, the main machine having a paper inlet and a paper outlet, the main machine comprising a base and a flip cover rotatably arranged on the base, the upper end surface of the base being rotatably provided with a rubber roller, the inner side surface of the flip cover being provided with a thermal print head, when the flip cover is closed to the base, the rubber roller and the thermal print head are close to each other, and the printing paper passes through the gap between the rubber roller and the thermal print head, the paper outlet end of the paper hopper box corresponds to the inlet and outlet of the main machine, and the paper hopper box is detachably arranged at the rear end of the main machine. The paper hopper box and the main machine are detachably connected, when the roll paper needs to be printed, the paper hopper box is installed, when the flat folding paper needs to be printed, the paper hopper box is removed, and the two printing modes can be freely switched, which greatly expands the application.

Description

TECHNICAL FIELD

[0001] The present application relates to a printing device, in particular to a thermal printer core. BACKGROUND

[0002] The existing thermal printer includes a main machine and a paper storage box arranged at the rear end of the main machine. The main machine has a paper inlet and a paper outlet. The main machine includes a base and a flip cover rotatably arranged on the base. The upper end surface of the base is rotatably provided with a rubber roller. The inner side surface of the flip cover is provided with a thermal print head. When the flip cover is closed on the base, the rubber roller and the thermal print head are close to each other, and the printing paper passes through the gap between the rubber roller and the thermal print head. The paper outlet end of the paper storage box is arranged corresponding to the paper inlet and outlet of the main machine. The related documents can refer to the Chinese utility model patent "Thermal printer with lid closing detection" (authorized publication number CN212098013U) with the patent number ZL202020317450.4, and can also refer to the Chinese utility model patent "Thermal printer suitable for large paper roll" (authorized publication number CN213734167U) with the patent number ZL202022173742.8.

[0003] At present, the paper storage box and the shell of the main machine are integrated, and the width size of the printing paper in the paper storage box is basically fixed, so that one kind of printer can only be suitable for one kind of printing paper, and cannot achieve one machine for multiple uses. In addition, it is generally only suitable for roll paper, and is not suitable for flat folding printing paper, so the applicability needs to be improved. SUMMARY

[0004] The technical problem to be solved by the present application is to provide a thermal printer core which can be suitable for both roll paper and flat folding printing paper.

[0005] The technical solution adopted by the present application to solve the above technical problem is: a thermal printer core, which includes a main machine and a paper storage box arranged at the rear end of the main machine. The main machine has a paper inlet and a paper outlet. The main machine includes a base and a flip cover rotatably arranged on the base. The upper end surface of the base is rotatably provided with a rubber roller. The inner side surface of the flip cover is provided with a thermal print head. When the flip cover is closed on the base, the rubber roller and the thermal print head are close to each other, and the printing paper passes through the gap between the rubber roller and the thermal print head. The paper outlet end of the paper storage box is arranged corresponding to the paper inlet of the main machine, characterized in that the paper storage box is detachably arranged at the rear end of the main machine.

[0006] The detachable structure of the paper storage box and the main machine is preferably designed as follows: the rear end of the base has a connecting hole, and the front end of the paper storage box extends a hook portion which is detachably inserted into the connecting hole.

[0007] Further, the connecting hole is in longitudinal strip shape, the end of the hook part extends with a convex part to both sides in radial direction to form a T shape, and the convex part is limited in the connecting hole when the hook part is assembled in the connecting hole.

[0008] The inner bottom of the paper box is provided with a plurality of positioning grooves on both sides in the vertical paper output direction, and each side is correspondingly provided with a side baffle capable of limiting the lateral movement of the paper roll, and the lower end surface of each side baffle is provided with a positioning rib matched with the positioning groove, and the spacing between the two side baffles matches the width of the printing paper.

[0009] The middle part of the bottom of the paper box at the paper output end is provided with a raised stop block for limiting the paper roll from being pulled out of the paper box, and the inner side surface of the stop block is in arc shape, and the positioning grooves are arranged on both sides of the stop block.

[0010] When the paper roll is pulled before printing, the stop block can limit and block the paper roll from being pulled out of the paper box directly, and also prevent friction with the outer wall of the host to cause scratches on the printing paper.

[0011] As a preferred, the paper feeding port of the machine base is provided with a paper feeding support, which comprises

[0012] a support, both ends of which are respectively formed with a first sliding groove and a second sliding groove;

[0013] a first sliding block, one end of which is formed with a first stop part and is slidably arranged in the first sliding groove, and the other end is formed with a first rack on the inner side;

[0014] a second sliding block, one end of which is formed with a second stop part and is slidably arranged in the second sliding groove, and the other end is formed with a second rack on the inner side; the distance between the second stop part and the first stop part is matched with the width of the paper; and

[0015] an intermediate gear rotatably arranged in the middle of the support and meshed with the first rack and the second rack on both sides.

[0016] When one of the first stop part and the second stop part is driven, the spacing between the first stop part and the second stop part can be adjusted steplessly.

[0017] The first stop part, the second stop part and the middle part of the outer end surface of the support are all provided with an anti-adhesive strip. The anti-adhesive strip can isolate the non-bottom paper printing paper (the back of the printing surface is directly covered with adhesive) from being bonded with the machine shell.

[0018] Compared with the prior art, the advantages of the present invention are: the paper tray and the main unit are detachable. When it is necessary to print roll paper, the paper tray is installed, and when it is necessary to print flat folded paper, the paper tray is removed. It can freely switch between the two printing modes, which greatly expands its applicability. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of an embodiment.

[0020] Figure 2 This is a schematic diagram of the structure after the flip cover is turned on.

[0021] Figure 3 for Figure 1 A schematic diagram of the structure after the main unit and the paper tray are separated.

[0022] Figure 4 This is a schematic diagram of the structure from another perspective of the embodiment.

[0023] Figure 5 for Figure 4 A schematic diagram of the structure after the main unit and the paper tray are separated.

[0024] Figure 6 for Figure 3 Exploded view of the paper storage box.

[0025] Figure 7 for Figure 6 Another structural diagram of the middle side baffle.

[0026] Figure 8 for Figure 5 Exploded and enlarged view of the paper feed support and the base unit.

[0027] Figure 9 for Figure 8 Another perspective structural diagram of the paper feed support. Detailed Implementation

[0028] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0029] like Figures 1-5 As shown, the thermal printer module in this embodiment includes a main unit 1 and a paper tray 2 located at the rear end of the main unit 1. The paper tray 2 is suitable for paper roll configuration. The main unit 1 has a paper inlet 14 and a paper outlet 13. The main unit 1 includes a base 11 and a flip-up cover 12 located on the base 11. A rubber roller 16 is rotatably mounted on the upper surface of the base 11. A thermal print head 17 is located on the inner side of the flip-up cover 12. When the flip-up cover 12 is closed in the base 11, the rubber roller 16 and the thermal print head 17 are close together, and the printing paper passes through the gap between the rubber roller 16 and the thermal print head 17. The paper outlet end of the paper tray 2 is configured to correspond to the paper inlet of the main unit 1.

[0030] The paper box 2 is detachably arranged at the rear end of the main machine 1. Figure 3 and Figure 5 As shown, the rear end of the machine base 11 is provided with a connecting hole 15, and the front end of the paper box 2 is extended with a hook portion 21 which is detachably inserted into the connecting hole 15. Specifically, the connecting hole 15 is in longitudinal strip shape, and the end of the hook portion 21 is extended with a protrusion to the both sides in radial direction to form a T shape, and the protrusion is limited in the connecting hole 15 when the hook portion 21 is assembled in the connecting hole 15.

[0031] When the flat paper printing is needed, the paper box 2 is detached, and when the roll paper printing is needed, the roll paper is placed in the paper box, and then the two hook portions are connected to the connecting holes respectively to complete the assembly, and at this time, the roll paper printing can be performed.

[0032] As shown in Figure 5 , Figure 8 and Figure 9 , the paper feeding support 4 is arranged on the paper feeding port 14 of the machine base 11, and the paper feeding support 4 comprises a support 43, a first sliding block 41, a second sliding block 42 and an intermediate gear 44. The both ends of the support 43 are respectively formed with a first sliding groove 431 and a second sliding groove 432; the first sliding block 41 is formed with a first blocking portion 411 at one end and is slidably arranged on the first sliding groove 431 through a first sliding portion 413, and the other end is formed with a first gear rack 412 on the inner side; the second sliding block 42 is formed with a second blocking portion 421 at one end and is slidably arranged on the second sliding groove 432 through a second sliding portion 423, and the other end is formed with a second gear rack 422 on the inner side; the distance between the second blocking portion 421 and the first blocking portion 411 is adapted to the width of the paper; and the intermediate gear 44 is rotatably arranged in the middle of the support 43 and is meshed and driven with the first gear rack 412 and the second gear rack 422 on the both sides. In order to make the sliding more stable, the support is further provided with a third sliding groove 433 and a fourth sliding groove 434, and correspondingly, the first sliding block 41 is provided with a third sliding portion 413 which is slidably matched with the third sliding groove 433, and the second sliding block 42 is provided with a fourth sliding portion 424 which is slidably matched with the fourth sliding groove 434, and the first sliding groove 431 and the third sliding groove 433 are arranged in parallel and vertically, and the second sliding groove 432 and the fourth sliding groove 434 are arranged in parallel and vertically. When one of the first blocking portion and the second blocking portion is driven, the distance between the first blocking portion and the second blocking portion can be adjusted.

[0033] As shown in Figure 8 , the first blocking portion 411, the second blocking portion 421 and the middle part of the outer end face of the support 43 are all provided with an anti-adhesive strip 45.

[0034] As shown in Figure 3 , Figure 6 and Figure 7As shown, the bottom of the paper box 2 is provided with a plurality of positioning slots 23 on both sides in the vertical paper outlet direction, and each side is correspondingly provided with a side baffle 3 capable of limiting the lateral movement of the paper roll. The lower end surface of each side baffle 3 is provided with a positioning rib 31 matched with the positioning slot 23, and the spacing between the two side baffles 3 matches the width of the printing paper. The middle of the bottom of the paper outlet end of the paper box 2 is provided with a raised stop block 22 for limiting the paper roll from being pulled out of the paper box 2. The inner side surface of the stop block 22 is arc-shaped, and the positioning slots 23 are arranged on both sides of the stop block 22.

[0035] After the paper roll is loaded into the paper box, the two side baffles are used to position the two sides of the paper roll. At the same time, the spacing of the first slider and the second slider is adjusted to determine the length of the paper from the paper outlet to the paper roll, ensuring that the printing is complete without deviation.

Claims

1. A thermal printer core comprising a main body (1) and a paper cassette (2) arranged at the rear end of the main body (1), the main body (1) having a paper inlet (14) and a paper outlet (13), the main body (1) comprising a base (11) and a flip cover (12) rotatably arranged on the base (11), the upper end surface of the base (11) being rotatably provided with a rubber roller (16), the inner side surface of the flip cover (12) being provided with a thermal print head (17), the rubber roller (16) and the thermal print head (17) being close to each other when the flip cover (12) is closed on the base (11), and the printing paper passing through the gap between the rubber roller (16) and the thermal print head (17), the paper outlet end of the paper cassette (2) corresponding to the paper inlet of the main body (1), characterized in that The paper cartridge (2) is detachably arranged at the rear end of the main machine (1); The rear end of the machine base (11) has a connecting hole (15), and the front end of the paper cartridge (2) extends a hook portion (21) which is detachably inserted into the connecting hole (15); The connecting hole (15) is in longitudinal strip shape, and the end of the hook portion (21) extends a protrusion to both sides in radial direction to form a T shape, and the protrusion is limited in the connecting hole (15) when the hook portion (21) is assembled into the connecting hole (15); The inner bottom of the paper cartridge (2) is formed with a plurality of positioning grooves (23) in the direction perpendicular to the paper output direction, and correspondingly, each side is provided with a side baffle (3) which can limit the lateral movement of the paper roll, and the lower end surface of each side baffle (3) is provided with a positioning rib (31) which is matched with the positioning groove (23), and the spacing between the two side baffles (3) matches the width of the printing paper; When the printing roll paper is needed, the paper cartridge is mounted, and when the printing flat folding paper is needed, the paper cartridge is removed.

2. The thermal printer core of claim 1, wherein The middle part of the paper output end bottom of the paper cartridge (2) is provided with a protruding stop block (22) which limits the paper roll from being pulled out of the paper cartridge (2), and the inner side surface of the stop block (22) is in arc shape, and the positioning grooves (23) are arranged on both sides of the stop block (22).

3. The thermal printer core of claim 1, wherein The paper feeding support (4) is arranged on the paper feeding port (14) of the machine base (11), and the paper feeding support (4) comprises a support (43) which is formed with a first sliding groove (431) and a second sliding groove (432) at both ends; a first sliding block (41) which is formed with a first stop portion (411) at one end and is slidably arranged on the first sliding groove (431), and is formed with a first rack (412) at the inner side of the other end; a second sliding block (42) which is formed with a second stop portion (421) at one end and is slidably arranged on the second sliding groove (432), and is formed with a second rack (422) at the inner side of the other end; the distance between the second stop portion (421) and the first stop portion (411) is matched with the width of the paper; and an intermediate gear (44) which is rotatably arranged in the middle of the support (43) and is meshed with the first rack (412) and the second rack (422) on both sides.

4. The thermal printer core of claim 3, wherein The first stop portion (411), the second stop portion (421) and the middle part of the outer end surface of the support (43) are all provided with an anti-sticking adhesive tape (45).

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