Paper roll mechanism of POS and cash register all-in-one machine

Abstract

The utility model discloses a paper roll mechanism of a POS and cash register all-in-one machine, which comprises a machine cover provided with a paper roll, a driven shaft sleeved with a rubber sleeve is rotatably arranged in the machine cover, the rubber sleeve is provided with vent holes which are circumferentially arranged, and the driven shaft is provided with vent grooves which are arranged at equal intervals. According to the paper roll mechanism of the POS and cash register all-in-one machine, heat absorbed by the surface of the rubber sleeve is dispersed through the vent holes, more contact faces with air can be kept, the effect of dissipating heat into the air is achieved, the air with heat is directly transmitted to the driven shaft in cooperation with the air conveying holes, and therefore heat dissipation is achieved. The ventilation grooves are used for providing air channels for the inner side wall of the rubber sleeve, so that diffusion treatment of hot air is realized, heat adsorbed by the rubber sleeve can be efficiently dissipated, damage and wrinkles of the heat to the surface of the rubber sleeve are reduced, meanwhile, interference to thermo-sensitive paper caused by over-high surface temperature is avoided, and the developing effect of the thermo-sensitive paper is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to POS machine printing part technical field, concretely related to a paper roll mechanism of POS cash register integrated machine. BACKGROUND

[0002] POS cash register usually adopts the mode of heat sensitive printing, and adopts the mode of special point position heating on special heat sensitive printing paper, so that the heat sensitive printing paper is heated and blackened to show the image.

[0003] According to the publication (announcement) number: CN207833640U, the publication (announcement) day: 7, September 2018, a kind of paper roll device of POS cash register is disclosed.

[0004] In the prior art including the above patent, the chamber in POS machine is usually only limited to the storage of the roll of heat sensitive printing paper, and the roll is not driven to rotate by using a specific rotating part, and the purpose is to facilitate the quick replacement of the paper cylinder of heat sensitive printing paper, so that the roll needs to be engaged with each other to drive the roll to clamp and convey, and the roll has a cylindrical rubber sleeve, which is to increase the friction with the heat sensitive paper, but since the heat sensitive paper is imaged by heating, and in order to ensure that the paper is in a straight and flat state during printing, the heating position is between the roll and the roll, so that when the printed paper passes through the rubber sleeve, the heat on the paper is transferred to the rubber sleeve, and the surface of the rubber sleeve will be wrinkled due to the heat after long-term use, which will cause the paper to be wrinkled and pressed when it is discharged from the chamber, resulting in indentation, affecting the normal imaging on the paper, and accompanied by abnormal sound during the conveying of the paper. SUMMARY

[0005] The utility model aims at providing a kind of paper roll mechanism of POS cash register integrated machine, to solve the problems generated above.

[0006] In order to achieve the above purpose, the utility model provides the following technical scheme:

[0007] A kind of paper roll mechanism of POS cash register integrated machine, comprising a cover provided with a paper roll, a driven shaft provided with a rubber sleeve is rotatably arranged in the cover, and a plurality of air holes are arranged circumferentially on the rubber sleeve.

[0008] A plurality of air grooves are arranged equidistantly on the driven shaft, and a plurality of air supply holes are arranged on the inner wall of the rubber sleeve for connecting the air grooves and the air holes.

[0009] Preferably, a rubber strip is arranged between adjacent air holes.

[0010] Preferably, the air supply hole is provided with a bent hole for cooperating with the side wall of the driven shaft.

[0011] Preferably, the cover is provided with a notch outside the rubber sleeve.

[0012] Preferably, a heat conducting member is hingedly arranged in the notch, and a scraping member is fixedly arranged on the heat conducting member and used for sliding against the outer wall of the rubber sleeve.

[0013] Preferably, a turning strip is further fixedly arranged on the heat conducting member and used for driving the scraping member.

[0014] Preferably, the turning strip is arranged close to the rubber sleeve, so that the scraping member is pushed against the rubber strip to deform.

[0015] Preferably, the included angle of the bending hole is 90°.

[0016] Preferably, the scraping member is arranged perpendicularly to the turning strip.

[0017] Preferably, the scraping member is specifically an alloy metal strip.

[0018] In the above technical solution, the paper roll mechanism of the POS cash register all-in-one machine has the following beneficial effects: the heat absorbed by the surface of the rubber sleeve is dispersed through the plurality of air holes, and more contact surfaces with air are maintained, so that the heat dissipation effect to the air is achieved; the air holes are matched to directly transfer the air with heat to the driven shaft, and the air channel is provided to the inner wall of the rubber sleeve by the air groove, so that the diffusion treatment of the hot air is achieved, the heat absorbed by the rubber sleeve is efficiently dissipated, the damage and wrinkles of the surface of the rubber sleeve caused by the heat are reduced, the interference of the surface temperature on the thermal paper is avoided, and the developing effect of the thermal paper is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art according to these drawings.

[0020] Figure 1 The cover and the inner paper roll top view angle of the POS machine part mechanism are provided for the embodiments of the present application.

[0021] Figure 2 The cover part position and the inner driven shaft, rubber sleeve side surface sectional view of the embodiments of the present application are provided.

[0022] Figure 3 The driven shaft, rubber sleeve and heat conducting member explosion schematic diagram provided for the embodiments of the present application.

[0023] Figure 4The ventilation groove, the ventilation hole and the air conveying hole are shown in the schematic view.

[0024] Mark explanation:

[0025] 1, machine cover; 11, paper roll; 2, driven shaft; 21, ventilation groove; 3, rubber sleeve; 31, ventilation hole; 32, rubber strip; 33, air conveying hole; 34, bending hole; 4, heat conducting part; 41, scraping part; 42, turning strip. Specific implementation

[0026] In order to make the technical personnel in the art better understand the technical scheme of the utility model, the utility model will be further described in detail below with reference to the drawings.

[0027] As Figures 1-4 shown, a paper roll mechanism of a POS cash register all-in-one machine, including the machine cover 1 provided with the paper roll 11, the driven shaft 2 is rotationally arranged in the machine cover 1 and is sleeved with the rubber sleeve 3, and the rubber sleeve 3 is provided with the ventilation hole 31 arranged circumferentially;

[0028] The driven shaft 2 is provided with the ventilation groove 21 arranged at equal intervals, and the inner side wall of the rubber sleeve 3 is provided with the air conveying hole 33 for connecting the ventilation groove 21 and the ventilation hole 31.

[0029] Specifically, the paper roll 11 pulls the hot-sensitive paper end from the rubber sleeve 3 position to the machine body, and the transmission shaft for engaging the driven shaft 2 is located on the machine body, so that the driven part is separated more conveniently, and the machine body and its internal driving mode are prior art, which will not be described and marked here.

[0030] Further, the ventilation hole 31 is in the form of a sector, so as to make the ventilation hole 31 have a larger contact surface with air.

[0031] The heat absorbed by the surface of the rubber sleeve 3 is dispersed through the plurality of ventilation holes 31, and more contact surfaces with air are maintained, so as to realize the effect of heat dissipation to air, and the air conveying hole 33 is used to directly transfer the air with heat to the driven shaft 2, and the ventilation groove 21 is used to provide an air passage for the inner side wall of the rubber sleeve 3, so as to realize the diffusion treatment of hot air, and the gap existing at the connection of the machine cover 1 is used to transfer heat to the machine body, so as to ensure that the heat absorbed by the rubber sleeve 3 can be efficiently dissipated, reduce the damage and wrinkles of the surface of the rubber sleeve 3 caused by heat, and also avoid the interference of the surface temperature being too high on the thermal-sensitive paper, and ensure the developing effect of the thermal-sensitive paper.

[0032] As a further embodiment of the utility model, the rubber strip 32 is arranged between adjacent ventilation holes 31.

[0033] Specifically, the rubber strip 32 is a part of the rubber sleeve 3 itself.

[0034] The rubber sleeve 3 is provided with a plurality of rubber strips 32, which can form a support effect on the inner and outer sides of the rubber sleeve 3, guarantee the normal ventilation of the air holes 31, and buffer when pressing the thermal paper, so that the thermal paper is more stable during conveying.

[0035] As a further provided embodiment of the utility model, the air inlet hole 33 is provided with a bending hole 34 matched with the side wall of the driven shaft 2.

[0036] Specifically, the bending holes 34 are equidistantly distributed on the air inlet hole 33.

[0037] The hot air flowing in the air inlet hole 33 can directly contact the side wall of the driven shaft 2 through the bending holes 34, so that the heat transfer and absorption are more rapid, and the heat dissipation effect of the ventilation groove 21 is guaranteed.

[0038] As another further provided embodiment of the utility model, a notch is formed on the cover 1 and located on the outer side of the rubber sleeve 3.

[0039] Specifically, the notch is located on the raised position of the cover 1.

[0040] The notch provides a heat dissipation port around the rubber sleeve 3, so that the heat can be efficiently dissipated.

[0041] As a further provided embodiment of the utility model, a heat conduction member 4 is hingedly arranged in the notch, and a scraping member 41 is fixedly installed on the heat conduction member 4 and used for slidingly abutting the outer side wall of the rubber sleeve 3.

[0042] Specifically, the scraping member 41 has an arc-shaped cross section, and the inner side wall of the arc-shaped end position region is used for heat absorption.

[0043] The end of the scraping member 41 is oriented in the same direction as the tangent direction of the rotation of the rubber sleeve 3, so that the heat stored on the surface of the rubber sleeve 3 is transferred when directly contacting the scraping member 41, and the scraping member 41 dissipates the absorbed heat from the notch to the air.

[0044] As a further provided embodiment of the utility model, a turning strip 42 is further fixedly installed on the heat conduction member 4 and used for driving the scraping member 41 to move.

[0045] Specifically, the turning strip 42 abuts against the inner wall of the notch, and the heat conduction member 4 is hingedly provided with a torsion spring, and the torsion spring and its installation mode are prior art, which will not be repeated here.

[0046] The turning strip 42 is pushed and pulled to rotate the heat conduction member 4 around the hinge position, so that the notch is manually opened under high load printing state, so that the heat on the rubber sleeve 3 is quickly contacted with air and dissipated.

[0047] As a further provided embodiment of the utility model, the turning strip 42 is close to the rubber sleeve 3, and the scraping member 41 abuts against the rubber strip 32 to deform.

[0048] Specifically, the heat-conducting member 4 presses the surface of the rubber sleeve 3 in the default state, and the torsion spring is in the deformed state at this time (the torsion spring is deformed in the default state).

[0049] The scraping member 41 is pressed to make the scraping member 41 penetrate into the gap, and the elastic deformation of the end of the scraping member 41 occurs, and the length of the protruding outside of the end is left, so that the inner arc surface of the scraping member 41 presses the surface of the rubber sleeve 3 again, and the rubber strip 32 changes the cross-sectional area of the ventilation hole 31 in the resetting process, and the heat flow is assisted.

[0050] As a further provided embodiment of the utility model, the included angle of the bending hole 34 is 90°.

[0051] The included angle of the bending hole 34 makes the air inlet hole 33 have a larger heat dissipation area.

[0052] As a further provided embodiment of the utility model, the scraping member 41 and the turning strip 42 are arranged perpendicularly.

[0053] The perpendicular arrangement makes the turning strip 42 more easily clamped in the gap, and the angle position between the scraping member 41 and the turning strip 42 forms a through hole directly connected to the inside of the machine cover 1, and the through hole is used for heat dissipation under normal printing.

[0054] As a further provided embodiment of the utility model, the scraping member 41 is specifically an alloy metal strip.

[0055] The alloy material of the scraping member 41 has better heat conduction effect, and the absorbed heat is better transmitted to the air.

[0056] Working principle: the heat absorbed by the surface of the rubber sleeve 3 is dispersed through the plurality of ventilation holes 31, and more contact surfaces with air are maintained, and the air with heat is directly transmitted to the driven shaft 2 through the air inlet hole 33, and the air passage is provided to the inner wall of the rubber sleeve 3 through the air inlet groove 21, so that the heat air diffusion treatment is realized, and the gap existing in the connection of the machine cover 1 is used to transmit heat to the machine body, so as to protect the heat absorbed by the rubber sleeve 3 from being lost, reduce the damage of heat to the surface of the rubber sleeve 3, and avoid the interference of the surface temperature to the thermal sensitive paper.

[0057] The above only describes some exemplary embodiments of the utility model in a descriptive manner, without doubt, for ordinary skilled in the art, the described embodiments can be modified in various ways without departing from the spirit and scope of the utility model. Therefore, the above drawings and description are illustrative in nature, and should not be understood as limiting the scope of protection of the utility model claims.

Claims

1. A paper roll mechanism for a POS cash register, characterized in that, The machine includes a cover (1) with a paper roll (11) and a driven shaft (2) fitted with a rubber sleeve (3) is rotatably installed in the cover (1). The rubber sleeve (3) has circumferentially arranged ventilation holes (31). The driven shaft (2) has equidistantly arranged ventilation grooves (21), and the inner wall of the rubber sleeve (3) has an air supply hole (33) for connecting the ventilation grooves (21) and the ventilation hole (31).

2. The paper roll mechanism of a POS cash register according to claim 1, characterized in that, A rubber strip (32) is provided between adjacent ventilation holes (31).

3. The paper roll mechanism of a POS cash register according to claim 2, characterized in that, The air inlet (33) is provided with a bent hole (34) for fitting the side wall of the driven shaft (2).

4. The paper roll mechanism of a POS cash register according to claim 3, characterized in that, The cover (1) has a notch on the outside of the rubber sleeve (3).

5. The paper roll mechanism of a POS cash register according to claim 4, characterized in that, A heat-conducting component (4) is hinged in the notch, and a scraper (41) for sliding against the outer wall of the rubber sleeve (3) is fixedly installed on the heat-conducting component (4).

6. The paper roll mechanism of a POS cash register according to claim 5, characterized in that, The heat-conducting component (4) is also fixedly installed with a flip bar (42) for driving the scraper (41) to move.

7. The paper roll mechanism of a POS cash register according to claim 6, characterized in that, The flapping strip (42) moves closer to the rubber sleeve (3), causing the scraper (41) to push against the rubber strip (32) and deform.

8. The paper roll mechanism of a POS cash register according to claim 6, characterized in that, The included angle of the bent hole (34) is 90°.

9. The paper roll mechanism of a POS cash register according to claim 6, characterized in that, The scraper (41) and the turning bar (42) are arranged perpendicularly.

10. The paper roll mechanism of a POS cash register according to claim 6, characterized in that, The scraper (41) is specifically an alloy metal strip.

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