Linerless Label Printer

Abstract

The present invention provides a bottom-free label printer, comprising a middle frame and a flap disposed above the middle frame, the front end of the middle frame is provided with a thermal sheet holder, the upper end of the thermal sheet holder is provided with a thermal sheet, the inner bottom surface of the flap is provided with a rubber roller corresponding to the position of the thermal sheet, and when the flap is closed on the middle frame, the rubber roller is closely disposed on the thermal sheet. The bottom-free label printer provided by the present invention can effectively prevent the rubber roller from sticking to the outer wall surface of the middle frame, and in addition, an anti-sticking shaft parallel to the rubber roller is disposed behind the rubber roller, which can effectively prevent the bottom-free thermal label printing paper from sticking to the inner bottom surface of the flap when printing and unwinding.

Description

Technical Field

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

[0002] Traditional printers can only print on receipts and ordinary label paper. Ordinary label paper consists of base paper and surface substrate. After printing, the base paper becomes waste, and the remaining base paper has no value. It is not only a waste of resources, but also causes environmental pollution. Most of the baseless thermal printing label rolls in the prior art (such as "a portable baseless thermal printing label roll" with patent number CN201610771138.0) include a silicone layer, a heat-sensitive layer and a glue layer (self-adhesive layer). Traditional label printers are used for baseless thermal printing label rolls. The glue layer of the label roll is easy to stick to the inside of the paper bin or the outer wall of the printer frame, causing inconvenience in use and poor user experience. The cover must be opened frequently for adjustment, and the applicability is not strong. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a label printer suitable for printing linerless label paper.

[0004] The present invention provides a linerless label printer, comprising a middle frame and a flip cover arranged above the middle frame, wherein a thermal sheet holder is arranged at the front end of the middle frame, a thermal sheet is arranged at the upper end of the thermal sheet holder, a rubber roller corresponding to the position of the thermal sheet is arranged on the inner bottom surface of the flip cover, and when the flip cover is closed on the middle frame, the rubber roller is tightly arranged on the thermal sheet.

[0005] Furthermore, an anti-sticking shaft parallel to the rubber roller is arranged behind the rubber roller on the inner bottom surface of the flip cover, the anti-sticking shaft is arranged closely to the rubber roller, and anti-sticking ribs are arranged on the outer wall surface of the anti-sticking shaft along the circumferential direction.

[0006] Furthermore, a receiving groove for placing the thermal film bracket is opened at the front end portion of the middle frame, and a switch plate is also arranged in the receiving groove, and the switch plate is located below the thermal film bracket. The switch plate includes a first main board and first side plates extending upward from both ends of the first main board, and a first hooking portion is arranged on the first side plate, and a second hooking portion corresponding to the first hooking portion is arranged on the left and right inner side walls of the receiving groove. When the flip cover is closed on the middle frame, the roller shafts at the left and right ends of the rubber roller are respectively clamped in the first hooking portions on the first side plates at both ends of the switch board and the second hooking portions on the left and right inner side walls of the receiving groove.

[0007] Furthermore, the roller shafts at both ends of the rubber roller are clamped on the first hooking part and the second hooking part, the first supporting shaft is inserted into the first side plate, both ends of the first supporting shaft are installed on the middle frame, the first side plate can be rotated through the first supporting shaft, and the first hooking part and the second hooking part form openings that can release or clamp the roller shafts at both ends of the rubber roller.

[0008] Furthermore, a protruding column extending outward is provided on the outer wall surface of one of the first side plates of the switch plate, and an opening for accommodating the protruding column is provided on the inner wall of the middle frame.

[0009] Furthermore, an opening structure is provided on the flip cover, and the opening structure includes a rotating member, and the rotating member has a push rod facing the open cavity. The rotating member triggers the displacement of the convex column of the switch plate through the push rod, so that the first side plate of the switch plate rotates, so that the first hooking part and the second hooking part form an opening of the roller shaft that can release the two ends of the rubber roller.

[0010] Furthermore, the switch plate has a first side plate with a protruding column extending outward and has a bent hook portion, the hook portion is provided with a tension spring, one end of the tension spring is connected to the hook portion, and the other end of the tension spring is connected to the wall surface of the middle frame.

[0011] Furthermore, a thermistor substrate is arranged between the switch plate and the thermistor bracket, the thermistor substrate includes a second main board and a second side board located on the second main board, a second supporting shaft is inserted into the second side board, the front side of the first main board has a slot extending in the left-right direction, the second main board has a hook extending downward through the slot, and both ends of the second supporting shaft are installed on the middle frame.

[0012] Furthermore, a plurality of compression springs are provided between the bottom surface of the switch plate and the inner bottom surface of the accommodating groove, the flip cover is closed on the middle frame, and the thermal sheet at the upper end of the thermal sheet bracket is tightly attached to the rubber roller on the inner bottom surface of the flip cover through the elastic action of the compression springs.

[0013] With the linerless label printer provided by the present invention, the rubber roller is arranged above the thermal sheet, and the linerless thermal label printing paper passes through between the rubber roller and the thermal sheet. The technical solution of the present invention is to arrange the rubber roller above the thermal sheet, and when the rubber roller rotates, the friction between the rubber roller and the thermal sheet drives the linerless thermal label printing paper to move, the side of the linerless thermal label printing paper with text facing downward, and the adhesive layer of the linerless thermal label printing paper facing upward, thereby effectively preventing it from sticking to the outer wall surface of the middle frame. In addition, an anti-sticking shaft parallel to the rubber roller is arranged behind the rubber roller, which can effectively prevent the linerless thermal label printing paper from sticking to the inner bottom surface of the flip cover when printing and rewinding the paper. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0015] Figure 1 The exploded view of a linerless label printer provided in an embodiment of the present invention is schematically shown at an angle;

[0016] Figure 2 A three-dimensional diagram of a linerless label printer according to an embodiment of the present invention is schematically shown;

[0017] Figure 3 Schematically Figure 2 A magnified view of part A;

[0018] Figure 4 The exploded view of the linerless label printer provided in the embodiment of the present invention is schematically shown from another angle;

[0019] Figure 5 A cross-sectional view of a linerless label printer according to an embodiment of the present invention is schematically shown;

[0020] Figure 6 A schematic diagram of opening a flip cover of a linerless label printer according to an embodiment of the present invention is schematically shown;

[0021] Figure 7 The switch board, the thermal film substrate, and the thermal film bracket provided in the embodiment of the present invention are schematically shown at an angle;

[0022] Figure 8 The schematic diagram of the switch board and the thermistor substrate provided in the embodiment of the present invention is schematically shown from another angle. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0024] In the description of the present invention, it should be noted that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0025] Furthermore, the terms “first” and “second” are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0026] In the description of the present invention, unless otherwise clearly specified and limited, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] Reference Figures 1 to 8 The embodiment of the present invention provides a linerless label printer, comprising a middle frame 1 and a flip cover 2 arranged above the middle frame 1, a bottom cover 3 is arranged below the middle frame 1, the flip cover 2 is rotatably connected to the middle frame 1 through a rotating shaft at the rear of the middle frame 1, a thermal sheet bracket 4 is arranged at the front end of the middle frame 1, a thermal sheet is arranged at the upper end of the thermal sheet bracket 4, a heater is arranged on the thermal sheet, a rubber roller 6 corresponding to the position of the thermal sheet is arranged on the inner bottom surface of the flip cover 2, and the flip cover 2 covers the middle frame 1. When the rubber roller 6 is tightly arranged on the heat-sensitive sheet, the rubber roller 6 is an anti-sticking rubber roller. In the present embodiment, a rubber roller made of Japan's Shin-Etsu KE-941 silicone rubber is used. An anti-sticking shaft 7 parallel to the rubber roller 6 is arranged behind the rubber roller 6 on the inner bottom surface of the flip cover 2. The anti-sticking shaft 7 is made of plastic. The anti-sticking shaft 7 is tightly arranged with the rubber roller 6. The diameter of the anti-sticking shaft 7 is smaller than the diameter of the rubber roller 6. Anti-sticking ribs 8 are arranged along the circumferential direction on the outer wall surface of the anti-sticking shaft 7, and the anti-sticking ribs 8 are staggered.

[0028] The linerless label printer provided by the embodiment of the present invention is used, and the rubber roller 6 is arranged above the thermal film, and the linerless thermal label printing paper passes through between the rubber roller 6 and the thermal film, wherein the adhesive layer (self-adhesive layer) of the linerless thermal label printing paper is tightly connected to the rubber roller 6. The technical solution of the present invention is to arrange the rubber roller 6 above the thermal film, and when the rubber roller 6 rotates, the linerless thermal label printing paper is driven to move by the friction between the rubber roller 6 and the thermal film, and the side of the linerless thermal label printing paper with text is facing downward, and the adhesive layer of the linerless thermal label printing paper is facing upward, thereby effectively preventing it from drooping down and sticking to the outer wall surface of the printer. In addition, an anti-sticking shaft 7 parallel to the rubber roller 6 is arranged behind the rubber roller 6, which can effectively prevent the linerless thermal label printing paper from sticking to the inner bottom surface of the flip cover 2 when printing and rewinding the paper.

[0029] A receiving groove 9 for accommodating the thermal sheet bracket 4 is provided at the front end of the middle frame 1, and a switch board 10 is also provided in the receiving groove 9. The switch board 10 is located below the thermal sheet bracket 4. The switch board 10 includes a first main board 11 and first side boards 12 extending upward from both ends of the first main board 11. A first hooking portion 13 is provided on the first side board 12, and a second hooking portion 14 corresponding to the first hooking portion 13 is provided on the left and right inner side walls of the receiving groove 9. When the flip cover 2 is closed on the middle frame 1, the roller shafts at the left and right ends of the rubber roller 6 are respectively inserted into the first hooking portions 13 on the first side boards 12 at both ends of the switch board 10 and the second hooking portions 14 on the left and right inner side walls of the receiving groove 9.

[0030] The roller shafts at both ends of the rubber roller 6 are clamped on the first hooking part 13 and the second hooking part 14. The first side plate 12 is inserted with a first supporting shaft 15. Both ends of the first supporting shaft 15 are installed on the middle frame 1. The first side plate 12 can rotate through the first supporting shaft 15. The first hooking part 13 and the second hooking part 14 form openings that can release or clamp the roller shafts at both ends of the rubber roller 6. Specifically, the first hooking part 13 of the first side plate 12 can rotate relative to the second hooking part 14 of the inner side wall of the accommodating groove 9, thereby clamping or releasing the roller shaft of the rubber roller 6. Its structural design is reasonable and feasible.

[0031] On the outer wall surface of one of the first side plates 12 of the switch plate 10, a convex column 16 extending outward is provided, and on the inner wall of the middle frame 1, a cavity 17 for accommodating the convex column 16 is provided. An opening structure is provided on the flip cover 2, and the opening structure includes a rotating member 18. The rotating member 18 has a push rod 19 facing the opening cavity 17. The rotating member 18 triggers the displacement of the convex column 16 of the switch plate 10 through the push rod 19, so that the first side plate 12 of the switch plate 10 rotates, so that the first hooking portion 13 and the second hooking portion 14 form an opening of the roller shaft that can release the two ends of the rubber roller 6, so as to realize the opening of the flip cover 2. A reset torsion spring 20 is provided on the rotating member 18. After the flip cover 2 is opened, the rotating member 18 is reset by the reset torsion spring 20.

[0032] Preferably, the switch board 10 has a bent hook portion 21 on the first side plate 12 with the protruding column 16 extending outward, and a tension spring 22 is provided on the hook portion 21, one end of the tension spring 22 is connected to the hook portion 21, and the other end of the tension spring 22 is connected to the wall of the middle frame 1. When the cover is opened, the tension spring 22 has a buffering effect on the middle frame 1, thereby improving the user experience.

[0033] A thermal sheet substrate 23 is arranged between the switch board 10 and the thermal sheet bracket 4. The thermal sheet substrate 23 includes a second main board 5 and a second side board 24 located on the second main board 5. A second support shaft 25 is inserted into the second side board 24. The front side of the first main board 11 has a slot 26 extending in the left-right direction (i.e., the length direction of the first main board 11). The second main board 5 has a hook 27 extending downward through the slot 26. Both ends of the second support shaft 25 are mounted on the middle frame 1. The left-right direction, the front-back direction, and the up-down direction are as follows: Figure 1 , 4 , as shown in Figure 5.

[0034] A plurality of compression springs 28 are provided between the bottom surface of the switch plate 10 and the inner bottom surface of the accommodating groove 9. In the present embodiment, three compression springs 28 are provided between the bottom surface of the switch plate 10 and the inner bottom surface of the accommodating groove 9, and the distance between two adjacent compression springs 28 is the same. When the flip cover 2 is closed on the middle frame 1, the thermal sheet at the upper end of the thermal sheet bracket 4 is tightly attached to the rubber roller 6 provided on the inner bottom surface of the flip cover 2 by the elastic action of the compression springs 28.

[0035] A rubber roller bracket 29 is provided on the inner bottom surface of the flip cover 2, and the rubber roller bracket 29 has a first card interface 30 for the two ends of the roller shaft of the rubber roller 6 to be clamped. An anti-sticking shaft bracket 31 is also provided on the inner bottom surface of the flip cover 2, and the anti-sticking shaft bracket 31 has a second card interface 32 for the shaft core of the anti-sticking shaft 7 to be clamped.

[0036] A curved surface 33 is provided at the paper outlet at the front end of the middle frame 1 and is inclined upward from the inside to the outside (i.e., from the back to the front). A plurality of curved ribs 34 are arranged from left to right on the curved surface 33 (in this embodiment, the number of the curved ribs 34 is seven). A curved panel 35 corresponding to the curved ribs 34 is provided at the front end of the flip cover 2. The flip cover 2 is closed on the middle frame 1, and a curved edge 36 abutting against the curved ribs 34 is provided on the curved panel 35.

[0037] After the linerless thermal label printing paper passes through between the rubber roller 6 and the thermal film, it passes through the arc rib 34 of the paper outlet at the front end of the middle frame 1 and the arc edge 36 of the arc panel 35 of the flip cover 2, so that the glue layer of the linerless thermal label printing paper is bent upward during the paper discharge process, and the user can intuitively see the printed label text. It is easy to use and suitable for large-scale promotion and application.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A linerless label printer, characterized in that: It comprises a middle frame and a flip cover arranged above the middle frame, wherein a thermal sheet holder is arranged at the front end of the middle frame, a thermal sheet is arranged at the upper end of the thermal sheet holder, a rubber roller corresponding to the position of the thermal sheet is arranged on the inner bottom surface of the flip cover, and when the flip cover is closed on the middle frame, the rubber roller is closely arranged on the thermal sheet; A receiving groove for placing the thermal sheet bracket is provided at the front end of the middle frame, a switch plate is further provided in the receiving groove, the switch plate is located below the thermal sheet bracket, the switch plate comprises a first main board and first side plates extending upwardly from both ends of the first main board, a first hooking portion is provided on the first side plate, and second hooking portions corresponding to the first hooking portion are provided on the left and right inner side walls of the receiving groove, when the flip cover is closed on the middle frame, the roller shafts at the left and right ends of the rubber roller are respectively clamped into the first hooking portions on the first side plates at both ends of the switch plate and the second hooking portions on the left and right inner side walls of the receiving groove; The roller shafts at both ends of the rubber roller are clamped on the first hooking part and the second hooking part, a first supporting shaft is inserted on the first side plate, both ends of the first supporting shaft are installed on the middle frame, the first side plate can be rotated by the first supporting shaft, and the first hooking part and the second hooking part form openings that can release or clamp the roller shafts at both ends of the rubber roller; A convex column extending outward is provided on the outer wall surface of one of the first side plates of the switch plate, and an opening for accommodating the convex column is provided on the inner wall of the middle frame; The flip cover is provided with an opening structure, which includes a rotating member, and the rotating member has a push rod facing the opening cavity. The rotating member triggers the displacement of the convex column of the switch plate through the push rod, so that the first side plate of the switch plate rotates, so that the first hooking part and the second hooking part form an opening that can release the roller shaft at both ends of the rubber roller; A bent hook portion is provided on the first side plate of the switch plate having a convex column extending outward, and a tension spring is provided on the hook portion, one end of the tension spring is connected to the hook portion, and the other end of the tension spring is connected to the wall surface of the middle frame; A thermal sheet substrate is arranged between the switch plate and the thermal sheet bracket, the thermal sheet substrate comprises a second main board and a second side board located on the second main board, a second support shaft is inserted through the second side board, a front side of the first main board has a slot extending in the left-right direction, the second main board has a hook extending downward through the slot, and both ends of the second support shaft are mounted on the middle frame; A plurality of compression springs are provided between the bottom surface of the switch plate and the inner bottom surface of the accommodating groove, the flip cover is closed on the middle frame, and the thermal sheet at the upper end of the thermal sheet bracket is tightly arranged on the rubber roller on the inner bottom surface of the flip cover through the elastic action of the compression springs; A curved surface inclined upward from inside to outside is provided at the paper outlet at the front end of the middle frame, and a plurality of curved ribs are arranged from left to right on the curved surface. The front end of the flip cover has a curved panel corresponding to the curved ribs, the flip cover is closed on the middle frame, and the curved panel has an arc edge abutting against the curved ribs.

2. The linerless label printer according to claim 1, characterized in that: An anti-sticking shaft parallel to the rubber roller is arranged behind the rubber roller on the inner bottom surface of the flip cover. The anti-sticking shaft is arranged closely to the rubber roller, and anti-sticking ribs are arranged on the outer wall surface of the anti-sticking shaft along the circumferential direction.

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