A mini label printer

Abstract

The present invention proposes a mini label printer with reasonable structural design and convenient for carrying, comprising an upper shell and a lower shell, a paper outlet is provided on the side wall of the lower shell, a middle shell is arranged in the lower shell, a paper bin and a battery bin are provided in parallel on the middle shell, a connecting groove is provided on the bin wall of the battery bin on one side of the paper bin, a paper outlet channel is provided on the middle shell between the paper bin and the paper outlet, heating components for heating thermal paper and rollers for driving a paper roll to discharge paper are rotatably provided on both sides of the paper outlet channel, a blade for cutting the printed thermal paper is slidably provided on the paper outlet channel, a first driving mechanism for driving the heating component to slide, a second driving mechanism for driving the blade to slide back and forth, and a third driving device for driving the roller to roll are provided on the middle shell.

Description

Technical Field

[0001] The present invention relates to the technical field of printers, and in particular to a mini label printer. Background Art

[0002] With the improvement of living standards, people are pursuing a higher quality of life and convenience of life. Correspondingly, label printers that can improve the quality of life and make life more convenient have appeared on the market. This label printer can not only print text, but also print graphics and photos. In life, it can be used to print the name and shelf life of items, helping users to find items more quickly and reminding the shelf life of items so that users can use them up within the shelf life to avoid the items from being expired due to long-term non-use. In learning, it can be used to print students' wrong questions and help students create wrong question collections. It can quickly record wrong questions and reduce the time students spend copying wrong question collections, so as to gain more study time for students and improve learning efficiency.

[0003] However, the existing label printer has a large body size and is not convenient to put into a pocket and carry around. The existing label printer arranges the paper compartment and the battery compartment in layers inside the shell, with the battery compartment being arranged at the bottom of the shell and the paper compartment being arranged above the battery compartment. This layered arrangement has to increase the thickness of the label printer, making the thickness of the label printer reach 60-70 mm, which is not convenient for the printer to be stored in a pocket of clothing and carried around.

[0004] This case arises to solve the above problems. Summary of the invention

[0005] Therefore, in view of the above problems, the present invention proposes a mini label printer with reasonable structural design and convenient to carry.

[0006] In order to solve the above technical problems, the solution adopted by the present invention is: a mini label printer, comprising an upper shell and a lower shell, the upper shell can be detachably arranged on the lower shell, a paper outlet is provided on the side wall of the lower shell, a middle shell for installing batteries and paper rolls is provided in the lower shell, a paper bin for placing paper rolls and a battery bin for installing batteries are provided in parallel on the middle shell, a connecting groove connected to the paper bin for facilitating battery disassembly and assembly is provided on the bin wall located on one side of the paper bin, a paper outlet channel is provided on the middle shell between the paper bin and the paper outlet, heating components for heating thermal paper can be slidably arranged on both sides of the paper outlet channel, a roller for driving the paper roll to discharge paper can be rotatably arranged, a blade for cutting the printed thermal paper can be slidably arranged on the paper outlet channel, a first driving mechanism for driving the heating component to slide and press or move away from the roller, a second driving mechanism for driving the blade to slide back and forth, and a third driving device for driving the roller to roll are provided on the middle shell.

[0007] A further improvement is that the cavity of the battery compartment is opened to a depth capable of accommodating more than one group of batteries installed in upper and lower layers.

[0008] A further improvement is that: the first driving mechanism includes a transmission pressure plate, the transmission pressure plate is rotatably arranged on the bottom of the middle shell, the heating component is fixedly arranged on one end of the transmission pressure plate, and a first driving device for driving the transmission pressure plate to rotate is arranged on the middle shell.

[0009] A further improvement is that: the first driving device includes a through hole and a rotating block which are opened through the upper and lower surfaces of the middle shell. The middle part of the rotating block can be rotatably arranged in the through hole. The upper end of the rotating block passes through the through hole. The lower end of the rotating block is connected to the free end of the transmission pressure plate. A first resetting device for driving the transmission pressure plate and resetting the rotating block is arranged between the transmission pressure plate and the middle shell.

[0010] A further improvement is that: the first reset device includes a first elastic reset member and a second elastic reset member, the two ends of the first elastic reset member are respectively fixedly arranged on the lower end of the rotating block and the free end of the transmission pressure plate, one end of the second elastic reset member is arranged on the end of the transmission pressure plate close to the heating component, and the other end is fixedly arranged on the middle shell of the transmission pressure plate on the other side of the first elastic reset member.

[0011] Further improvements are: a first limit plate and a second limit plate are respectively arranged on the middle shell at both ends of the transmission pressure plate, the transmission pressure plate can be slidably and rotatably arranged between the first limit plate and the second limit plate, a first rotating protrusion is arranged on the side of the first limit plate close to the rotating block, and a second rotating protrusion is arranged on the side of the second limit plate close to the heating component, the transmission pressure plate is provided with a first rotating groove and a second rotating groove which respectively cooperate with the first rotating protrusion and the second rotating protrusion, a third elastic reset member is arranged between the side of the transmission pressure plate close to the rotating block and the second limit plate, one end of the third elastic reset member is arranged on the transmission pressure plate, and the other end is arranged on the second limit plate.

[0012] Further improvements are: the second driving mechanism includes a first slider and a clamping block, the first slider can be slidably arranged on the lower shell body along a direction perpendicular to the paper output channel, one end of the clamping block can be slidably arranged on the first slider, the blade is fixedly arranged on the first slider, a first opening for the clamping block and the blade to pass through is opened on one side of the paper output channel, and a second opening for the blade to pass through is opened on the other side of the paper output channel, a second driving device for driving the first slider and the blade to slide toward the paper output channel is arranged on the lower shell body, a fourth elastic reset component for driving the first slider to reset is arranged between the first slider and the paper output channel, and a fifth elastic reset component for driving the clamping block to reset is arranged between the clamping block and the first slider.

[0013] A further improvement is that: the second driving device is a shear button slidably arranged on the side wall of the lower shell, and the first sliding block is fixedly arranged on the shear button.

[0014] Further improvement is: the third driving device includes a driving motor, the shell of the driving motor is fixedly arranged on the middle shell, the first gear is fixedly arranged on the rotating shaft of the driving motor, the second gear is fixedly arranged on the roller, the third gear is arranged on the middle shell and meshes with the first gear, a fourth gear is coaxially arranged on the lower end surface of the third gear, a fifth gear is arranged on the middle shell and meshes with the fourth gear, a sixth gear is coaxially arranged on the upper end surface of the fifth gear, a seventh gear is arranged on the middle shell and meshes with the sixth gear, an eighth gear is coaxially arranged on the upper end surface of the seventh gear, and the second gear meshes with the eighth gear.

[0015] A further improvement is that a groove is downwardly opened on the upper end surface of the upper shell, and a mounting plate for displaying a pattern is arranged in the groove.

[0016] By adopting the above technical solution, the beneficial effects of the present invention are: using the present invention has the following advantages:

[0017] 1. The present invention changes the layout of the existing label printer in which the battery compartment is arranged at the bottom of the lower shell and the paper compartment is arranged above the battery compartment, and arranges the battery compartment and the paper compartment side by side, so that the positions of the battery compartment and the paper compartment are more compact, and the space originally reserved at the bottom for opening the battery compartment is saved, and the overall thickness of the printer is effectively reduced; the thickness of the existing label printer is generally between 60-70mm, while the thickness of the present invention can be reduced to between 20-30mm; the battery used in the present invention is two groups of No. 7 batteries installed in the upper and lower layers, the diameter of the No. 7 battery is 10mm, and the thickness of the two groups of No. 7 batteries is 20mm, the highest point of the battery is flush with the upper surface of the middle shell, the upper end face of the middle shell is in contact with the inner end face of the upper shell, and the upper shell and the lower shell are both thin shells, so the thickness of the present invention can be controlled between 20-30mm; the thickness of the present invention is much smaller than that of the existing label printer, so that the present invention can be placed in a clothing pocket and carried around, so that the user can use it at any time.

[0018] 2. In the present invention, a connecting groove connected to the paper bin is provided on the bin wall on one side of the paper bin. The depth of the connecting groove is the same as that of the paper bin and the battery bin. The space of the connecting groove can be used to make the opening position of the paper bin biased towards the battery bin, so that when the paper roll is at the maximum diameter, the outermost side of the paper roll can be inserted into the connecting groove, and the space of the connecting groove is used to the maximum extent, making the structure of the printer more compact, effectively reducing the diameter of the printer, and reducing the body size of the printer; at the same time, it is convenient for disassembly and assembly of the battery. After disassembling the paper roll, the user's fingers can be inserted into the paper bin through the connecting groove to pick out the battery installed in the battery bin, so that the battery can be replaced to recharge after it is out of power; the battery provided by the present invention is a reusable battery, and ordinary batteries can only be used once as temporary recharge.

[0019] 3. The transmission pressure plate in the present invention is slidable and rotatable. The rotating block, the first spring, the second spring and the third spring drive the transmission pressure plate to slide and rotate between the first limit plate and the second limit plate. The transmission pressure plate can respectively make the second rotating groove on the transmission pressure plate cooperate with the second rotating protrusion on the second limit plate and the first rotating groove on the transmission pressure plate cooperate with the first rotating protrusion on the first limit plate by sliding. The first rotating protrusion is close to the rotating block, and the second rotating protrusion is close to the heating component. When the first rotating groove cooperates with the first rotating protrusion, the heating component and the roller are slowly moving away from each other. At this time, the second spring and A labor-saving lever is formed between the transmission pressure plate and the first rotating protrusion; when the second rotating groove cooperates with the second rotating protrusion, the heating component and the roller are slowly approaching each other, and at this time, a labor-saving lever is formed between the first spring, the transmission pressure plate and the second rotating protrusion; the position of the rotation center of the transmission pressure plate is adjusted by sliding the transmission pressure plate, so that the driving rod can form a labor-saving lever regardless of whether it drives the heating component close to the roller or drives the heating component away from the roller, thereby reducing the working strength of the first spring, the second spring and the third spring, extending the service life of the first spring, the second spring and the third spring, and thus extending the service life of the present invention.

[0020] 4. In the present invention, the slider drives the pressing block and the blade to pass through the first opening on the paper outlet channel at the same time, and then the pressing block first presses the thermal paper against the wall on the other side of the paper outlet channel. As the slider slides further, it drives the blade to move toward the second opening to cut the thermal paper. After the thermal paper is pressed and fixed by the pressing block, the thermal paper can be prevented from shifting, which facilitates the cutting of the thermal paper by the blade and makes the cut of the thermal paper smoother.

[0021] 5. The present invention drives the first gear, the third gear, the fourth gear, the fifth gear, the sixth gear, the seventh gear, and the eighth gear to rotate by a driving motor, thereby driving the second gear to rotate. By calculating the size of the corresponding gears, the rotation speed transmitted to the roller by the driving motor is reduced through the meshing transmission of gears of different sizes, and the torque of the roller is increased, so that the roller can roll to drive the paper roll to unload paper. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic structural diagram of a mini label printer according to an embodiment of the present invention.

[0023] Figure 2 It is a schematic structural diagram of a mini label printer according to an embodiment of the present invention.

[0024] Figure 3 It is a top view of the internal structure of a mini label printer according to an embodiment of the present invention.

[0025] Figure 4 It is a three-dimensional diagram of the internal structure of a mini label printer according to an embodiment of the present invention.

[0026] Figure 5 It is a bottom view of the internal structure of a mini label printer according to an embodiment of the present invention.

[0027] Figure 6 It is a bottom view of the internal structure of a mini label printer according to an embodiment of the present invention.

[0028] Figure 7 It is a top view of the internal structure of a mini label printer with the middle shell removed according to an embodiment of the present invention.

[0029] Figure 8 It is a structural schematic diagram of a second driving mechanism in a mini label printer according to an embodiment of the present invention. DETAILED DESCRIPTION

[0030] The present invention will now be further described with reference to the accompanying drawings and specific embodiments.

[0031] refer to Figures 1 to 8The embodiment of the present invention discloses a mini label printer, including an upper shell 10 and a lower shell 11. The upper end surface of the upper shell is provided with a groove 44 downwardly, and a mounting plate 45 for displaying a pattern is arranged in the groove. The mounting plate 45 may have a pattern itself, or the mounting plate may be transparent and present a pattern on the bottom surface of the groove. The upper shell 10 can be detachably arranged on the lower shell 11. The lower end of the upper shell 10 is rotatably engaged with the slot 12 opened at the upper end of the lower shell 11 through a card block. The upper shell and the lower shell are respectively provided with a card mark that makes it easier to align the card block with the card slot engagement entrance. When the card mark of the upper shell and the lower shell are aligned, the card block can slide into The upper shell body is then rotated clockwise or counterclockwise to fix the upper shell body with the lower shell body. The side walls of the upper shell body are also evenly provided with anti-slip strips to facilitate the rotation of the upper shell body by hand. The side walls of the lower shell body 11 are provided with a paper outlet 13. The lower shell body 11 is provided with a middle shell 14 for installing batteries and paper rolls. The middle shell 14 is provided with a paper bin 15 for placing paper rolls and a battery bin 16 for installing batteries in parallel. The paper bin 15 is provided with a mounting column 17 for installing a paper roll sleeve. The battery bin 16 and the paper bin 15 are provided in parallel to make the positions of the battery bin 16 and the paper bin 15 more compact, while eliminating the space originally reserved at the bottom for opening the battery bin 16, effectively reducing the cost. The overall thickness of the printer, the cavity of the battery compartment 16 is opened to a depth that can accommodate two groups of batteries installed in the upper and lower layers, and a group of batteries consists of two batteries. The battery compartment 16 is located on the compartment wall on one side of the paper compartment 15 and is provided with a connecting groove 18 connected to the paper compartment 15 for easy battery disassembly and assembly. The opening depth of the connecting groove 18 is the same as that of the paper compartment 15 and the battery compartment 16. After the connecting groove 18 is opened, when the paper roll is at the maximum diameter, the outermost side of the paper roll can be inserted into the connecting groove 18, and the space of the connecting groove 18 can be used to open the paper compartment 15, so that the structure of the printer is more compact, the diameter of the printer is effectively reduced, and the body size of the printer is reduced. After the paper roll is disassembled, the user's fingers can be inserted The battery installed in the battery compartment 16 is pulled out through the communicating groove 18 in the paper bin 15, which is convenient for disassembly of the battery. A paper outlet channel 19 is provided on the middle shell 14 between the paper bin 15 and the paper outlet 13. The paper outlet channel 19 is communicated with the paper outlet 13. A heating component 20 for heating thermal paper can be slidably provided on both sides of the paper outlet channel 19, and a roller 21 for driving the paper roll to discharge paper can be rotatably provided. The roller 21 is rotatably provided between the middle shell 14 and the lower shell 11. The heating component is a semiconductor heating element (the semiconductor heating element described in this embodiment is a well-known product and can be directly purchased on the market for use, so the semiconductor heating element is not described in detail here.) The heating component 20 can be slidably arranged between the middle shell 14 and the lower shell 11, and a blade 22 for cutting the printed thermal paper can be slidably arranged on the paper output channel 19. The middle shell 14 is provided with a first driving mechanism for driving the heating component 20 to slide and press or move away from the roller 21, a second driving mechanism for driving the blade 22 to slide back and forth, and a third driving device for driving the roller 21 to roll.

[0032] The first driving mechanism includes a transmission plate 23, which is rotatably disposed on the bottom of the middle shell 14, the heating component 20 is fixedly disposed on one end of the transmission plate 23, and a first driving device for driving the transmission plate 23 to rotate is disposed on the middle shell 14. The first driving device includes a through hole 24 and a rotating block 25 that penetrates the upper and lower surfaces of the middle shell 14, the middle portion of the rotating block 25 is rotatably disposed in the through hole 24 through a rotating shaft, the upper end of the rotating block 25 passes through the through hole 24, and the lower end of the rotating block 25 is connected to the free end of the transmission plate 23, and a first resetting device for driving the transmission plate 23 and the rotating block 25 to reset is disposed between the transmission plate 23 and the middle shell 14. The first reset device includes a first elastic reset member and a second elastic reset member, the first elastic reset member and the second elastic reset member are respectively a first spring 26 and a second spring 27, both ends of the first elastic reset member are respectively fixedly arranged on the lower end of the rotating block 25 and the free end of the transmission pressure plate 23, one end of the second elastic reset member is arranged on the end of the transmission pressure plate 23 close to the heating component 20, and the other end is fixedly arranged on the middle shell 14 on the other side of the transmission pressure plate 23 relative to the first elastic reset member. The middle shell 14 is provided with a first limit plate 28 and a second limit plate 29 at both ends of the transmission pressure plate 23, respectively. The transmission pressure plate 23 can be slidably and rotatably arranged between the first limit plate 28 and the second limit plate 29. The first limit plate 28 is provided with a first rotating protrusion 30 on the side close to the rotating block 25, and the second limit plate 29 is provided with a second rotating protrusion 31 on the side close to the heating component 20. The transmission pressure plate 23 is provided with a first rotating groove 32 and a second rotating groove 33 respectively cooperating with the first rotating protrusion 30 and the second rotating protrusion 31. A third elastic reset member is provided between the side of the transmission pressure plate 23 close to the rotating block 25 and the second limit plate 29. The third elastic reset member is a third spring 34. One end of the third elastic reset member is arranged on the transmission pressure plate 23, and the other end is arranged on the second limit plate 29.

[0033] When the upper shell 10 is engaged with the lower shell 11, the inner end surface of the upper shell 10 fits with the upper end surface of the middle shell 14, which will squeeze the upper end of the rotating block 25 downward to force the rotating block 25 to rotate. The lower end of the rotating block 25 rotates and stretches the first spring 26 arranged thereon. The first spring 26 pulls the transmission pressure plate 23 to slide toward the second limit plate 29 first, and compresses the third spring 34. When the second rotating groove 33 on the transmission pressure plate 23 cooperates with the second rotating protrusion 31 on the second limit plate 29, the first spring 26 further pulls the transmission pressure plate 23 to rotate along the center of the second rotating protrusion 31 as the rotation center, driving the heating component 20 to move toward the roller 21 to press the thermal paper, and the transmission pressure plate 23 rotates while squeezing the second spring 27. When the upper shell 10 is opened, the rotating block 25 removes the external force, and the third spring 34 resets to push the transmission pressure plate 23 to slide toward the first limit plate 28, so that the first rotating groove 32 on the transmission pressure plate 23 cooperates with the first rotating protrusion 30 on the first limit plate 28, and then the second spring 27 and the third spring 34 further reset the transmission pressure plate 23 to rotate along the center of the first rotating protrusion 30 as the rotation center, driving the heating component 20 away from the roller 21, and at the same time, the first spring 26 resets to drive the rotating block 25 to reset.

[0034] The second driving mechanism includes a first slider 35 and a pressing block 38. The first slider can be slidably arranged on the lower shell body along a direction perpendicular to the paper output channel. A sliding protrusion 36 is fixedly arranged on the first slider 35. A slideway 37 matching with the sliding protrusion 36 is provided at the bottom of the lower shell body 11. The sliding protrusion 36 can be slidably arranged in the slideway 37. One end of the pressing block 38 can be slidably arranged on the first slider 35 through a slide groove. The blade is fixedly arranged on the first slider 35. The distance between the pressing block 38 and the paper output channel is smaller than the distance between the blade and the paper output channel. A first opening is provided on one side of the paper output channel for the pressing block 38 and the blade to pass through. A second opening is provided on the other side of the paper output channel for the blade to pass through. The housing is provided with a second driving device for driving the first slider 35 and the blade to slide toward the paper outlet passage. A fourth elastic reset member for driving the first slider 35 to reset is provided between the first slider 35 and the paper outlet passage. The fourth elastic reset member is a fourth spring 9. One end of the fourth spring 9 is fixedly provided on the first slider 35. The other end of the fourth spring 9 can contact the side wall of the paper outlet passage to squeeze and store energy through the sliding of the first slider 35. A fifth elastic reset member for driving the clamping block 38 to reset is provided between the clamping block 38 and the first slider 35. The fifth elastic reset member is a fifth spring 91 (not shown in the figure). One end of the fifth spring 91 is fixedly provided on the first slider 35, and the other end is provided on the clamping block 38. The second driving device is a shear button slidably provided on the side wall of the lower housing. The first slider 35 is fixedly provided on the shear button.

[0035] The user manually presses the shear button 39, which pushes the first slider 35 to slide along the slide 37, and the first slider 35 drives the clamping block 38 and the blade 22 to move toward the paper outlet channel 19. As the first slider 35 slides, the other end of the fourth spring 9 abuts against the outer wall of the paper outlet channel. As the first slider 35 slides further, the fourth spring 9 is charged, and the first slider 35 drives the clamping block 38 and the blade to pass through the first opening on the paper outlet channel. The clamping block 38 squeezes the thermal paper against the wall on the other side of the paper outlet channel. The first slider 35 continues to slide to charge the fifth spring 91, and at the same time drives the blade to pass through the second opening on the paper outlet channel to cut the printed thermal paper. After cutting is completed, the user releases his hand, and the fourth spring 9 releases its elastic potential energy to drive the first slider 35 to drive the blade and the clamping block 38 to reset. At the same time, the fifth spring 91 releases its elastic potential energy to drive the clamping block 38 to reset, and the reset of the first slider 35 drives the shear button 39 to reset.

[0036] The third driving device includes a driving motor 40, the shell of the driving motor 40 is fixedly arranged on the middle shell 14, the first gear 1 is fixedly arranged on the rotating shaft of the driving motor 40, the second gear 2 is fixedly arranged on the roller, the middle shell 14 is provided with a third gear 3 meshing with the first gear 1, the fourth gear 4 is coaxially arranged on the lower end surface of the third gear 3, the fifth gear 5 is meshing with the fourth gear 4 on the middle shell 14, the sixth gear 6 is coaxially arranged on the upper end surface of the fifth gear 5, the seventh gear 7 meshing with the sixth gear 6 is arranged on the middle shell 14, the eighth gear 8 is coaxially arranged on the upper end surface of the seventh gear 7, and the second gear 2 meshes with the eighth gear 8 for transmission. The driving motor 40 drives the first gear 1 to rotate, the first gear 1 meshes and drives the third gear 3 to rotate, the third gear 3 rotates and drives the fourth gear 4 to rotate, the fourth gear 4 rotates and meshes and drives the fifth gear 5 to rotate, the fifth gear 5 rotates and drives the sixth gear 6 to rotate, the sixth gear 6 rotates and meshes and drives the seventh gear 7 to rotate, the seventh gear 7 rotates and drives the eighth gear 8 to rotate, and the eighth gear 8 rotates and meshes and drives the second gear 2 to rotate. By calculating and setting gear meshing transmissions of different sizes, the speed transmitted to the roller by the driving motor is reduced, and the torque of the roller 21 is increased, so that the roller rolls and drives the paper roll to discharge paper.

[0037] The lower shell 11 is provided with an electric control module 41 for controlling the heating of the heating component 20 and controlling the rotation of the driving motor 40 to drive the rotating shaft to print the corresponding content on the thermal paper. The electric control module 41 described in this embodiment is a well-known technology in the printer, and the improvement point of this case is not on the electric control module 41, so the electric control module 41 is not described in detail here. The battery pack, driving motor 40, and heating component 20 in the battery compartment 16 are all electrically connected to the electric control module 41. The lower shell 11 is provided with a power button 42 for controlling the power on or off of the electric control module 41 and a USB charging port 43 for charging the battery pack. The power button 42 and the USB charging port 43 are both electrically connected to the electric control module 41. A sensing plate 46 is downwardly disposed on the lower end surface of the transmission pressure plate, and the free end of the sensing plate 46 can extend into or out of the photoelectric sensing port of the photoelectric switch on the electronic control module 41 through the rotation of the transmission pressure plate. When the photoelectric sensor senses the sensing plate, the heating component and the roller are in a compressed state, and the printer can be controlled to print through the mobile phone software; when the photoelectric sensor does not sense the sensing plate, the heating component and the roller are in a non-compressed state, and the printer cannot be controlled to print through the mobile phone software. At the same time, the electronic control module of the printer will feed back an alarm signal to the mobile phone to remind the user that the heating component and the roller are in a non-compressed state.

[0038] The method of using the present invention is as follows: the printing content is edited through the software on the mobile phone, and the power button 42 is clicked to turn on the present invention. Then, the edited data information is transmitted to the electronic control module 41 by wireless transmission. The electronic control module 41 controls the heating component 20 and the roller 21 to print the corresponding content on the thermal paper. After the thermal paper is printed, the cutting button is clicked to cut the thermal paper.

[0039] Based on the above technical solution, a group of batteries is at least one battery, and the group of batteries disclosed in the above embodiment can also be one, three or four batteries.

[0040] The basic principles, main features and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for illustrating the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which shall fall within the scope of the present invention to be protected. The scope of protection of the present invention shall be defined by the attached claims and their equivalents.

Claims

1. A mini label printer, comprising an upper shell and a lower shell, wherein the upper shell is detachably mounted on the lower shell, a paper outlet is provided on a side wall of the lower shell, and a middle shell for mounting a battery and a paper roll is provided in the lower shell, characterized in that: The middle shell is provided with a paper bin for placing a paper roll and a battery bin for installing a battery in parallel, a bin wall of the battery bin located on one side of the paper bin is provided with a connecting groove connected with the paper bin for facilitating the disassembly and assembly of the battery, a paper outlet channel is provided on the middle shell between the paper bin and the paper outlet, heating components for heating thermal paper and rollers for driving the paper roll to outlet paper are slidably provided on both sides of the paper outlet channel, a blade for cutting the printed thermal paper is slidably provided on the paper outlet channel, a first driving mechanism for driving the heating component to slide and press or move away from the roller, a second driving mechanism for driving the blade to slide back and forth, and a third driving device for driving the roller to roll are provided on the middle shell; The first driving mechanism comprises a transmission pressure plate, the transmission pressure plate is rotatably arranged on the bottom of the middle shell, the heating component is fixedly arranged on one end of the transmission pressure plate, and the middle shell is provided with a first driving device for driving the transmission pressure plate to rotate; The first driving device comprises a through hole and a rotating block which are provided through the upper and lower surfaces of the middle shell. The middle part of the rotating block is rotatably arranged in the through hole. The upper end of the rotating block passes through the through hole. The lower end of the rotating block is connected to the free end of the transmission pressure plate. A first resetting device for driving the transmission pressure plate and resetting the rotating block is provided between the transmission pressure plate and the middle shell. The first reset device comprises a first elastic reset member and a second elastic reset member, wherein two ends of the first elastic reset member are respectively fixedly arranged on the lower end of the rotating block and the free end of the transmission pressure plate, one end of the second elastic reset member is arranged on the end of the transmission pressure plate close to the heating component, and the other end is fixedly arranged on the middle shell of the transmission pressure plate on the other side of the first elastic reset member; The second driving mechanism comprises a first slider and a pressing block, the first slider can be slidably arranged on the lower shell along a direction perpendicular to the paper output channel, one end of the pressing block can be slidably arranged on the first slider, the blade is fixedly arranged on the first slider, a first opening for the pressing block and the blade to pass through is provided on one side of the paper output channel, and a second opening for the blade to pass through is provided on the other side of the paper output channel, a second driving device for driving the first slider and the blade to slide toward the paper output channel is provided on the lower shell, a fourth elastic reset member for driving the first slider to return to its original position is provided between the first slider and the paper output channel, and a fifth elastic reset member for driving the pressing block to return to its original position is provided between the pressing block and the first slider; The inner end surface of the upper shell body is attached to the upper end surface of the middle shell body and presses the upper end of the rotating block downward to force the rotating block to rotate, and the lower end of the rotating block rotates to stretch the first spring, and the first spring pulls the transmission pressure plate to rotate; The upper end surface of the upper shell is provided with a mounting plate for displaying patterns.

2. A mini label printer according to claim 1, characterized in that: The cavity of the battery compartment is opened to a depth capable of accommodating more than one group of batteries installed in the upper and lower layers.

3. A mini label printer according to claim 1, characterized in that: The middle shell is provided with a first limit plate and a second limit plate at both ends of the transmission pressure plate, respectively; the transmission pressure plate can be slidably and rotatably arranged between the first limit plate and the second limit plate; a first rotating protrusion is arranged on the first limit plate close to the rotating block, and a second rotating protrusion is arranged on the second limit plate close to the heating component; a first rotating groove and a second rotating groove are provided on the transmission pressure plate, respectively cooperating with the first rotating protrusion and the second rotating protrusion; a third elastic reset member is provided between the transmission pressure plate close to the rotating block and the second limit plate; one end of the third elastic reset member is arranged on the transmission pressure plate, and the other end is arranged on the second limit plate.

4. The mini label printer according to claim 1, characterized in that: The second driving device is a shear button slidably disposed on the side wall of the lower shell, and the first sliding block is fixedly disposed on the shear button.

5. The mini label printer according to claim 1, characterized in that: The third driving device includes a driving motor, a shell of the driving motor is fixedly arranged on the middle shell, a first gear is fixedly arranged on the rotating shaft of the driving motor, a second gear is fixedly arranged on the roller, a third gear meshing with the first gear is arranged on the middle shell, a fourth gear is coaxially arranged on the lower end surface of the third gear, a fifth gear meshing with the fourth gear is arranged on the middle shell, a sixth gear is coaxially arranged on the upper end surface of the fifth gear, a seventh gear meshing with the sixth gear is arranged on the middle shell, an eighth gear is coaxially arranged on the upper end surface of the seventh gear, and the second gear meshes with the eighth gear.

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