A printer module

Abstract

The present invention relates to a printer module, and relates to the technical field of printing equipment, comprising a housing, a first elastic member, a driving roller, and a print head module. When the carbon ribbon box extends into the give way slot and compresses the first elastic member, the clamping member can be switched between the first position and the second position. When the clamping member is in the first position, the clamping member can be clamped in the clamping slot and the printing unit abuts against the driving roller. When the clamping member is in the second position, the clamping member can be released from the clamping slot and the print head module can be released from the abutment with the driving roller. By setting the above structure, the present invention can lock the carbon ribbon box at the same time when the printer module is in the printing state, and can eject the carbon ribbon box at the same time when the printer module is in the non-printing state, so that the printer is easy to use.

Description

Technical Field

[0001] The present invention relates to the technical field of printing equipment, and in particular to a printer module. Background Art

[0002] A thermal printer has a semiconductor heating element installed on the print head. After the print head is heated and contacts the thermal printing paper, the required pattern can be printed out. Its principle is similar to that of a thermal fax machine. It has multiple components such as a carbon ribbon cartridge and a print head, and its internal structure is complex.

[0003] Patent CN112810334A discloses an installation structure of a carbon ribbon cassette and a printer body and a printer. Before connecting to the body, the carbon ribbon supply end and the carbon ribbon recovery end are installed in the shell and constrained on the shell, so as to prevent the carbon ribbon supply end and the carbon ribbon recovery end from being separated from the shell or shaking greatly and damaging the carbon ribbon when the carbon ribbon cassette consumables are stored or transported. When connecting, the constraint of the shell is released by a disengagement actuator, so that the carbon ribbon supply end and the carbon ribbon recovery end are separated from the shell, and connected and locked with the corresponding support shaft through a second locking structure, so that the carbon ribbon supply end and the carbon ribbon recovery end are transferred from the shell to the support shaft for fixing. Since the carbon ribbon is separated from the shell, the carbon ribbon is prevented from being interfered by the shell during printing, which can be suitable for high-speed printing and has better printing quality. When printing, it is no longer constrained by the shell, but supported by the body, thereby reducing the processing requirements of the shell and facilitating manufacturing.

[0004] However, the above-mentioned printer of the prior art cannot lock the carbon ribbon box at the same time when the printer module is in the printing state, and cannot eject the carbon ribbon box at the same time when the printer module is in the non-printing state, which makes the printer inconvenient to use. Therefore, a printer module is urgently needed. Summary of the invention

[0005] In view of the status of the prior art, the present invention provides a printer module that can effectively solve the problem in the prior art that when the printer module is in a printing state, the carbon ribbon box cannot be locked at the same time, and when the printer module is in a non-printing state, the carbon ribbon box cannot be ejected at the same time, resulting in inconvenience in using the printer.

[0006] The present invention is achieved through the following technical solutions:

[0007] The present invention provides a printer module, comprising:

[0008] The shell has a receiving cavity formed inside and a recess for the carbon ribbon box to extend into.

[0009] A first elastic member, one end of which is connected to the housing, and the other end of which is used to provide an ejection force to the carbon ribbon box.

[0010] A driving roller is arranged in the accommodating cavity to drive the paper to move.

[0011] A print head module, the print head module includes a printing unit, a snap-in seat and a snap-in piece, the printing unit is rotatably disposed in the shell, the snap-in seat is disposed on the carbon ribbon box and is formed with a snap-in groove, when the carbon ribbon box extends into the clearance groove and compresses the first elastic member, the snap-in piece has a first position in which it is snapped into the snap-in groove and the printing unit is abutted against the driving roller, and a second position in which it is released from the snap-in groove and the printing unit is released from abutment with the driving roller.

[0012] Furthermore, the clamping member includes a first rotating shaft, a clamping portion and a cam, the first rotating shaft is rotatably arranged on the shell, the clamping portion is arranged on the first rotating shaft for extending into or out of the clamping slot, the cam is arranged on the first rotating shaft and its end away from the first rotating shaft is formed with at least one driving surface for driving the print head module to rotate, the first rotating shaft is used to drive the cam and the clamping portion to rotate simultaneously, so as to drive the clamping portion and the cam to switch synchronously between the first position and the second position.

[0013] Furthermore, two driving surfaces are provided, and the two driving surfaces are connected along the circumference of the cam, and the two driving surfaces are used to drive the print head module to rotate in sequence.

[0014] Furthermore, the two driving surfaces are both planes and the angle between them is an obtuse angle.

[0015] Furthermore, the printing unit includes a second rotating shaft, a printing component, an abutment plate and a second elastic member, the second rotating shaft is rotatably disposed on the shell, the printing component is disposed on the second rotating shaft, and the abutment plate is connected to the printing component via the second elastic member, and when the clamping member is in the first position, the printing component abuts against the driving roller and the second elastic member is in a compressed state; when the clamping member is in the second position, the printing component releases the abutment against the driving roller and the second elastic member is in an extended state.

[0016] Furthermore, an abutment surface is formed at the end of the cam facing away from the first rotating shaft, and the two driving surfaces and the abutment surface are connected in sequence along the circumference of the cam. When the clamping member is in the first position, the abutment surface is used to squeeze the abutment plate so that the printing component abuts against the driving roller and the elastic member is in a compressed state.

[0017] Furthermore, the printing unit also includes a restoring member, two ends of which are respectively connected to the shell and the printing assembly, and the restoring member is used to reset the printing assembly.

[0018] Furthermore, a drive groove is formed at the bottom of the shell, and the clamping member also includes a handle, one end of the handle is arranged on the first rotating shaft, and the other end of the handle extends out of the drive groove, and the handle is used to drive the first rotating shaft to rotate so as to drive the clamping portion and the cam to switch between the first position and the second position.

[0019] Furthermore, the carbon ribbon box includes a base, a new material barrel and a take-up reel, the new material barrel and the take-up reel are both arranged on the same side of the base and in parallel, the new material barrel and the take-up reel are used for sleeved carbon ribbon, the clamping seat is arranged on the base and located between the new material barrel and the take-up reel, and the shell is provided with three makeshift grooves for the new material barrel, the take-up reel and the clamping seat to extend into respectively.

[0020] Furthermore, the new barrel is provided with a first positioning shaft, and when the clamping piece is in the first position, the shell is provided with a first positioning groove for the first positioning shaft to extend into; the winding drum is provided with a second positioning shaft, and when the clamping piece is in the first position, the shell is provided with a second positioning groove for the second positioning shaft to extend into.

[0021] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0022] The present invention sets the shell, the first elastic member, the driving roller, the print head module and other components. When the carbon ribbon box extends into the give way slot and compresses the first elastic member, the clamping member can be switched between the first position and the second position. When the clamping member is in the first position, the clamping member can be clamped in the clamping slot and the printing unit can be abutted against the driving roller. When the clamping member is in the second position, the clamping member can be released from the clamping slot and the print head module can be released from the abutment against the driving roller. By setting the above structure, the present invention can lock the carbon ribbon box at the same time when the printer module is in a printing state, and can pop out the carbon ribbon box at the same time when the printer module is in a non-printing state, so that the printer is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of the three-dimensional structure of an embodiment of a housing provided by the present invention;

[0024] Figure 2 for Figure 1 The three-dimensional structure of the embodiment of the structure shown in the state of installing the clamping member Figure 1 ;

[0025] Figure 3 for Figure 1 The three-dimensional structure of the embodiment of the structure shown in the state of installing the clamping member Figure 2;

[0026] Figure 4 A three-dimensional structure diagram of an embodiment of a carbon ribbon box and a card connector provided by the present invention Figure 1 ;

[0027] Figure 5 A three-dimensional structure diagram of an embodiment of a carbon ribbon box and a card connector provided by the present invention Figure 2 ;

[0028] Figure 6 for Figure 2 The structure shown is a schematic diagram of a three-dimensional structure of an embodiment of the present invention when the carbon ribbon cassette and the card connector are installed;

[0029] Figure 7 A schematic diagram of the three-dimensional structure of an embodiment of a printer module provided by the present invention;

[0030] Figure 8 for Figure 7 A schematic diagram of the partially enlarged structure of part A;

[0031] Fig. 9 for Figure 7 A schematic diagram of the structure from above;

[0032] Fig.10 for Fig. 9 Schematic diagram of the cross-sectional structure in the middle BB direction;

[0033] Fig.11 for Fig.10 A schematic diagram of the local enlarged structure of part C in the middle;

[0034] Fig.12 for Fig. 9 Schematic diagram of the cross-sectional structure in the middle DD direction.

[0035] Figure numerals: 1. shell; 11. accommodating chamber; 12. yield groove; 13. driving groove; 14. first positioning groove; 15. second positioning groove; 2. first elastic member; 3. driving roller; 4. print head module; 41. printing unit; 411. second rotating shaft; 412. printing assembly; 413. abutment plate; 414. second elastic member; 415. return member; 42. snap-fit ​​seat; 421. snap-fit ​​groove; 43. snap-fit ​​member; 431. first rotating shaft; 432. snap-fit ​​part; 433. cam; 4331. driving surface; 4332. abutment surface; 434. handle; 5. ribbon box; 51. base; 52. new barrel; 521. first positioning shaft; 53. tape reel; 531. second positioning shaft. DETAILED DESCRIPTION

[0036] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, which constitute a part of this application and are used together with the embodiments of the present invention to illustrate the present invention, but are not used to limit the present invention.

[0037] like Figures 1 to 12 As shown, a printer module provided by the present invention includes a housing 1 , a first elastic member 2 , a driving roller 3 and a print head module 4 .

[0038] The housing 1 has an accommodating cavity 11 formed therein, and the housing 1 has a recess 12 for the carbon ribbon cassette 5 to extend into.

[0039] One end of the first elastic member 2 is connected to the housing 1 , and the other end of the first elastic member 2 is used to provide an ejection force to the carbon ribbon box 5 .

[0040] The driving roller 3 is disposed in the accommodating cavity 11 to drive the paper to move.

[0041] The print head module 4 includes a printing unit 41, a clamping seat 42 and a clamping member 43. The printing unit 41 is rotatably disposed in the shell 1. The clamping seat 42 is disposed on the carbon ribbon box 5 and is formed with a clamping groove 421. When the carbon ribbon box 5 extends into the yield groove 12 and compresses the first elastic member 2, the clamping member 43 has a first position in which it is clamped in the clamping groove 421 and the printing unit 41 is abutted against the driving roller 3, and a second position in which it is released from the clamping groove 421 and the printing unit 41 is released from abutment with the driving roller 3.

[0042] When the clamping member 43 is in the first position, the printer module is in a printing state; when the clamping member 43 is in the second position, the printer module is in a non-printing state.

[0043] The present invention sets the shell 1, the first elastic member 2, the driving roller 3 and the print head module 4 and other components. When the carbon ribbon box 5 extends into the give way slot 12 and compresses the first elastic member 2, the clamping member 43 can be switched between the first position and the second position. When the clamping member 43 is in the first position, the clamping member 43 can be clamped in the clamping slot 421 and the printing unit 41 abuts against the driving roller 3. When the clamping member 43 is in the second position, the clamping member 43 can be released from the clamping slot 421 and the print head module 4 is released from the abutment with the driving roller 3. By setting the above structure, the present invention can lock the carbon ribbon box 5 at the same time when the printer module is in the printing state, and can pop out the carbon ribbon box 5 at the same time when the printer module is in the non-printing state, so that the printer is easy to use.

[0044] In particular, by setting the above structure, the overall structure of the printer module can be made compact, which is convenient for printing on the one hand, and convenient for locking or ejecting the carbon ribbon box 5 on the other hand, that is, convenient for replacing the carbon ribbon box 5, which is convenient for practical application.

[0045] When the clamping member 43 is at the first position, the driving roller 3 drives the paper to pass between the driving roller 3 and the printing unit 41 and be printed.

[0046] In order to facilitate the switching of the clamping member 43 between the first position and the second position, the clamping member 43 includes a first rotating shaft 431, a clamping portion 432 and a cam 433. The first rotating shaft 431 is rotatably arranged on the housing 1. The clamping portion 432 is arranged on the first rotating shaft 431 to extend into or extend out of the clamping slot 421. The cam 433 is arranged on the first rotating shaft 431 and its end away from the first rotating shaft 431 is formed with at least one driving surface 4331 for driving the print head module 4 to rotate. The first rotating shaft 431 is used to drive the cam 433 and the clamping portion 432 to rotate simultaneously, so as to drive the clamping portion 432 and the cam 433 to switch synchronously between the first position and the second position. Two driving surfaces 4331 are provided, and the two driving surfaces 4331 are connected along the circumference of the cam 433. The two driving surfaces 4331 are used to drive the print head module 4 to rotate in sequence. Both of the two driving surfaces 4331 are planes and the angle between them is an obtuse angle. In practical applications, when the clamping member 43 is in the first position, the clamping portion 432 is used to clamp the clamping groove 421, and the driving surface 4331 is used to make the printing unit 41 abut against the driving roller 3; when the clamping member 43 is in the second position, the clamping portion 432 is used to release the clamping groove 421, and the driving surface 4331 is used to release the abutment between the print head module 4 and the driving roller 3; when the clamping member 43 is driven from the second position to the first position, by providing two driving surfaces 4331, the two driving surfaces 4331 are 331 can drive the printing unit 41 to rotate a certain angle. The first driving surface 4331 mainly drives the printing unit 41 to rotate. The second driving surface 4331 drives the printing unit 41 to rotate on the one hand, and can abut the printing unit 41 against the driving roller 3 on the other hand, so as to stably lock the printing unit 41 and facilitate the printing work. Such a design can make the overall structure of the printer module compact, which is convenient for the printing work on the one hand, and convenient for locking or ejecting the carbon ribbon box 5 on the other hand, so as to facilitate the replacement of the carbon ribbon box 5 and facilitate practical application.

[0047] In order to stably lock the printing component 412, the printing unit 41 includes a second rotating shaft 411, a printing component 412, an abutment plate 413 and a second elastic member 414. The second rotating shaft 411 is rotatably arranged on the shell 1, the printing component 412 is arranged on the second rotating shaft 411, and the abutment plate 413 is connected to the printing component 412 via the second elastic member 414. When the clamping member 43 is in the first position, the printing component 412 abuts against the driving roller 3 and the second elastic member 414 is in a compressed state; when the clamping member 43 is in the second position, the printing component 412 is released from the abutment with the driving roller 3 and the second elastic member 414 is in an extended state. The second rotating shaft 411, the printing component 412, the abutment plate 413 and the elastic member and other components are provided. When the clamping member 43 is in the first position, the carbon ribbon box 5 is in a locked state, and the second elastic member 414 is in a compressed state. At this time, the printing component 412 can be stably locked. Therefore, such a design facilitates locking the printing component 412 and the elastic member at the same time; when the clamping member 43 is in the second position, the second elastic member 414 is in an extended state. At this time, the clamping portion 432 is used to release the clamping with the clamping groove 421, and the driving surface 4331 is used to release the abutment between the print head module 4 and the driving roller 3. On the one hand, it is convenient for the carbon ribbon box 5 to be ejected, and on the other hand, it is convenient for adjusting and maintaining the printing component 412 to meet the needs of actual applications.

[0048] In order to further stably lock the printing assembly 412, a contact surface 4332 is formed at the end of the cam 433 away from the first rotating shaft 431. The two driving surfaces 4331 and the contact surface 4332 are sequentially connected along the circumference of the cam 433. When the clamping member 43 is in the first position, the contact surface 4332 is used to squeeze the contact plate 413 so that the printing assembly 412 is in contact with the driving roller 3 and the elastic member is in a compressed state. The contact surface 4332 is provided and the squeezing effect of the contact surface 4332 can increase the compression amount of the second elastic member 414, and at this time, the printing assembly 412 can be further stably locked, and the locking effect is better.

[0049] Among them, the two driving surfaces 4331 and the abutting surface 4332 are rounded in sequence, so that the driving process of the printing component 412 is more stable. The two driving surfaces 4331 and the abutting surface 4332 correspond to a stroke respectively. Therefore, the second rotating shaft 411 corresponds to three stroke positions to facilitate the adjustment of the position of the printing component 412.

[0050] In order to facilitate the resetting of the printing assembly 412, the printing unit 41 further includes a return member 415, the two ends of which are respectively connected to the housing 1 and the printing assembly 412, and the return member 415 is used to reset the printing assembly 412. When the clamping member 43 is in the second position, the printing assembly 412 is in the initial position, and the carbon ribbon cartridge 5 is in the ejected state. When printing is required, the clamping member 43 can be adjusted from the second position to the first position, and the carbon ribbon cartridge 5 is in the locked state. When printing is not required, the clamping member 43 can be adjusted from the first position to the second position. The printing assembly 412 is returned to the initial position under the dual action of the clamping member 43 and the return member 415, so as to facilitate the resetting of the printing assembly 412. By setting the above structure, the overall structure of the printer module can be made compact, which is convenient for printing on the one hand, and convenient for locking or ejecting the carbon ribbon cartridge 5 on the other hand, so as to facilitate the replacement of the carbon ribbon cartridge 5 and facilitate practical application.

[0051] In order to facilitate switching the clamping member 43 between the first position and the second position, a driving slot 13 is formed at the bottom of the housing 1, and the clamping member 43 also includes a handle 434, one end of which is arranged on the first rotating shaft 431, and the other end of which extends out of the driving slot 13, and the handle 434 is used to drive the first rotating shaft 431 to rotate, so as to drive the clamping portion 432 and the cam 433 to switch between the first position and the second position. This design makes the structure simple, and the first rotating shaft 431 is driven to rotate by the handle 434 to drive the clamping portion 432 and the cam 433 to switch between the first position and the second position, which is easy to operate and convenient for practical application.

[0052] In order to facilitate the stable installation and disassembly of the carbon ribbon box 5, the carbon ribbon box 5 includes a base 51, a new material barrel 52 and a take-up reel 53. The new material barrel 52 and the take-up reel 53 are both arranged on the same side of the base 51 and arranged in parallel. The new material barrel 52 and the take-up reel 53 are used for sleeved carbon ribbons. The clamping seat 42 is arranged on the base 51 and located between the new material barrel 52 and the take-up reel 53. The shell 1 is provided with three makeshift grooves 12 for the new material barrel 52, the take-up reel 53 and the clamping seat 42 to extend into respectively. The printer module of the present invention can be designed according to actual conditions, so as to lock or eject the carbon ribbon cartridge 5, so as to facilitate practical application; when the carbon ribbon cartridge 5 is of the above-mentioned structure, the shell 1 is provided with three said giving way slots 12 for the new material barrel 52, the winding barrel 53 and the clamping seat 42 to extend respectively, so as to facilitate the carbon ribbon cartridge 5 to extend into the shell 1, and the first elastic member 2 is compressed by the carbon ribbon cartridge 5, and when the clamping member 43 is in the first position, the clamping member 43 can be clamped in the clamping slot 421 and the printing unit 41 is clamped. It abuts against the driving roller 3. At this time, the carbon ribbon box 5 is in a locked state. When the clamping member 43 is in the second position, the clamping member 43 can be released from the clamping groove 421 and the print head module 4 is released from the abutment with the driving roller 3. The first elastic member 2 provides an ejection force to eject the carbon ribbon box 5. At this time, the carbon ribbon box 5 is in an ejection state. The locking or ejection effect in actual application is good. By setting the give way groove 12, elastic member and clamping member 43 and other components, carbon ribbon boxes 5 with different structures can be locked or ejected, and the adaptability is strong.

[0053] As an application scenario, the carbon ribbon box 5 is wound with carbon ribbon paper. When the clamping member 43 is in the first position, the printing component 412 is used to crimp the carbon ribbon paper to the driving roller 3. When the carbon ribbon paper and the carbon ribbon box 5 need to be replaced, the clamping member 43 needs to be adjusted from the first position to the second position to be used to pop out the carbon ribbon box 5 through the first elastic member 2 for replacement of the carbon ribbon box 5 and the carbon ribbon paper, and the printing component 412 can be adjusted and maintained.

[0054] In order to facilitate the installation and disassembly of the carbon ribbon box 5, the new barrel 52 is provided with a first positioning shaft 521, and when the clamping member 43 is in the first position, the shell 1 is provided with a first positioning groove 14 for the first positioning shaft 521 to extend into; the tape reel 53 is provided with a second positioning shaft 531, and when the clamping member 43 is in the first position, the shell 1 is provided with a second positioning groove 15 for the second positioning shaft 531 to extend into. By setting the above structure, the installation position of the carbon ribbon box 5 is more accurate. Specifically, by setting the first positioning axis 521 and the second positioning axis 531, when the clamping member 43 is in the first position, the first positioning axis 521 and the second positioning axis 531 are respectively clamped in the first positioning groove 14 and the second positioning groove 15, and the clamping member 43 can be clamped in the clamping groove 421 and the printing unit 41 is abutted against the driving roller 3. At this time, the carbon ribbon box 5 is in a locked state and is more stable. When the clamping member 43 is in the second position, the clamping member 43 can be released from the clamping groove 421 and the printing component 412 is released from the abutment with the driving roller 3. The first elastic member 2 provides an ejection force to eject the carbon ribbon box 5. At this time, the carbon ribbon box 5 is in an ejection state. The present invention facilitates the locking or ejection of the carbon ribbon box 5 by setting the above structure, so that the installation and disassembly of the carbon ribbon box 5 is convenient.

[0055] Compared with the prior art, the printer module provided by the present invention has the following beneficial effects:

[0056] The present invention sets the shell 1, the first elastic member 2, the driving roller 3 and the print head module 4 and other components. When the carbon ribbon box 5 extends into the give way slot 12 and compresses the first elastic member 2, the clamping member 43 can be switched between the first position and the second position. When the clamping member 43 is in the first position, the clamping member 43 can be clamped in the clamping slot 421 and the printing unit 41 abuts against the driving roller 3. When the clamping member 43 is in the second position, the clamping member 43 can be released from the clamping slot 421 and the print head module 4 is released from the abutment with the driving roller 3. By setting the above structure, the present invention can lock the carbon ribbon box 5 at the same time when the printer module is in the printing state, and can pop out the carbon ribbon box 5 at the same time when the printer module is in the non-printing state, so that the printer is easy to use.

[0057] The above description is only a preferred embodiment of the present invention and is not intended to be any form of limitation to the present invention. Any simple modification or equivalent changes made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. A printer module, characterized in that: include: A housing, wherein a receiving cavity is formed inside the housing, and the housing is provided with a clearance slot for the carbon ribbon cassette to extend into; A first elastic member, one end of which is connected to the housing, and the other end of which is used to provide an ejection force to the ribbon cassette; A driving roller, the driving roller is arranged in the accommodating cavity to drive the paper to move; A print head module, the print head module comprising a printing unit, a clamping seat and a clamping member, the printing unit is rotatably arranged in the housing, the clamping seat is arranged on the carbon ribbon cartridge and is formed with a clamping groove, when the carbon ribbon cartridge extends into the clearance groove and compresses the first elastic member, the clamping member has a first position of clamping with the clamping groove and abutting the printing unit against the driving roller, and a second position of releasing the clamping with the clamping groove and releasing the abutment between the printing unit and the driving roller; The clamping member comprises a first rotating shaft, a clamping portion and a cam, wherein the first rotating shaft is rotatably arranged on the housing, the clamping portion is arranged on the first rotating shaft for extending into or extending out of the clamping slot, the cam is arranged on the first rotating shaft and an end thereof away from the first rotating shaft is formed with at least one driving surface for driving the print head module to rotate, and the first rotating shaft is used to drive the cam and the clamping portion to rotate simultaneously, so as to drive the clamping portion and the cam to switch synchronously between the first position and the second position; The two driving surfaces are provided, and the two driving surfaces are connected along the circumference of the cam, and the two driving surfaces are used to drive the print head module to rotate in sequence; The two driving surfaces are both planes and the angle between them is an obtuse angle; The printing unit comprises a second rotating shaft, a printing assembly, an abutment plate and a second elastic member, wherein the second rotating shaft is rotatably arranged on the housing, the printing assembly is arranged on the second rotating shaft, the abutment plate is connected to the printing assembly via the second elastic member, and when the clamping member is in the first position, the printing assembly abuts against the driving roller and the second elastic member is in a compressed state; When the clamping member is in the second position, the printing assembly is released from contact with the driving roller and the second elastic member is in an extended state; An abutment surface is formed at the end of the cam facing away from the first rotating shaft, and the two driving surfaces and the abutment surface are connected in sequence along the circumference of the cam. When the clamping member is in the first position, the abutment surface is used to squeeze the abutment plate so that the printing component abuts against the driving roller and the elastic member is in a compressed state.

2. The printer module according to claim 1, characterized in that: The printing unit further comprises a restoring member, two ends of which are respectively connected to the housing and the printing assembly, and the restoring member is used to reset the printing assembly.

3. The printer module according to claim 2, characterized in that: A driving groove is formed at the bottom of the shell, and the clamping member also includes a handle, one end of the handle is arranged on the first rotating shaft, and the other end of the handle extends out of the driving groove, and the handle is used to drive the first rotating shaft to rotate so as to drive the clamping part and the cam to switch between the first position and the second position.

4. The printer module according to any one of claims 1 to 3, characterized in that: The carbon ribbon box includes a base, a new material barrel and a take-up reel, the new material barrel and the take-up reel are both arranged on the same side of the base and in parallel, the new material barrel and the take-up reel are used for sleeved carbon ribbon, the clamping seat is arranged on the base and located between the new material barrel and the take-up reel, and the shell is provided with three makeshift grooves for the new material barrel, the take-up reel and the clamping seat to extend into respectively.

5. The printer module according to claim 4, characterized in that: The new barrel is provided with a first positioning shaft, and when the clamping piece is in the first position, the shell is provided with a first positioning groove for the first positioning shaft to extend into; the winding drum is provided with a second positioning shaft, and when the clamping piece is in the first position, the shell is provided with a second positioning groove for the second positioning shaft to extend into.

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