CN211895258U - Printer facilitating printing paper sheet transmission - Google Patents

Abstract

The utility model provides a do benefit to printer of printing scraps of paper transmission relates to printing device technical field. The paper sheet recovery device comprises a base, a transmission guide rail, a storage bin and a recovery bin, wherein a paper sheet input port and a paper sheet recovery port are correspondingly arranged on the storage bin and the recovery bin; the storage bin is provided with an inclined bottom, and the input port is arranged on the inclined bottom; the conveying guide rail is provided with a driving roller and a movable pressing roller, and the conveying guide rail extends obliquely towards two sides by taking the driving roller as a center, so that an input section matched with the inclined bottom of the storage bin and a recovery section matched with the recovery opening are formed. When having guaranteed to print the scraps of paper and along the input section transmission, print the scraps of paper and carry through the forward cooperation of drive roller with the activity compression roller along the slope bottom, with the input section of slope bottom looks adaptation in order to accept to carry the printing scraps of paper that comes from the slope bottom transmission, avoided printing the scraps of paper and carried to the transmission guide rail in-process by storing the storehouse and taken place the scraps of paper skew, guaranteed to print scraps of paper transmission in-process steady transport, more do benefit to the transmission of scraps of paper.

Description

Printer facilitating printing paper sheet transmission

Technical Field

The utility model relates to a printing device technical field particularly, relates to a do benefit to printer of printing scraps of paper transmission.

Background

A typical printer includes a printing module, a roller set, a printing paper inlet and outlet, and the like. When printing the scraps of paper as required, the scraps of paper of printing that will treat to print is placed in the paper feed mouth, starts roller set, will print the scraps of paper through roller set and carry and print in the print module, print the scraps of paper after accomplishing and carry in the exit slot, and operating personnel can take out the printing scraps of paper after printing, accomplishes and prints the operation. The printer conveys blank printing paper sheets and printed printing paper sheets to a designated position through a conveying mechanism such as a roller set, so that the printing and conveying of the printing paper sheets along a conveying path are realized.

Among the prior art, only through the roll cooperation between the roller set usually when printing the scraps of paper transmission, realize the transport to printing the scraps of paper, lead to printing the transmission course comparatively unstable, and make the scraps of paper of carrying take place the condition such as skew easily, be unfavorable for printing the printing transmission of scraps of paper.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a do benefit to printer of printing scraps of paper transmission is provided to in realizing printing transmission course, more steady transport prints the scraps of paper, does benefit to the transmission of scraps of paper.

The utility model adopts the following scheme:

a printer beneficial to printing paper sheet transmission comprises a base, a transmission guide rail arranged on the base, a storage bin which is arranged up and down and used for storing blank printing paper sheets, and a recovery bin used for recovering printed paper sheets, wherein a paper sheet input port and a paper sheet recovery port are correspondingly arranged on the storage bin and the recovery bin; the storage bin is provided with an inclined bottom, and the input port is arranged on the inclined bottom; the conveying guide rail is provided with a driving roller and a movable pressing roller matched with the driving roller, and the conveying guide rail takes the driving roller as the center to obliquely extend towards two sides, so that an input section matched with the inclined bottom of the storage bin and a recovery section matched with the recovery port are formed.

As a further improvement, a paper blocking piece which only allows one printing paper to pass through is arranged at the paper sheet input port of the storage bin, and the paper blocking piece can adjust the opening degree of the paper sheet input port according to the thickness of the printing paper sheet.

As a further improvement, a conveying roller set is arranged on the conveying guide rail and comprises a first conveying roller, a first pressing roller, a second conveying roller and a second pressing roller, the first conveying roller and the second conveying roller are driven by the same motor to synchronously rotate, and the first pressing roller and the second pressing roller are driven by the same connecting rod to synchronously press or keep away from the corresponding conveying rollers.

As a further improvement, the first pressure roller and the second pressure roller are both rotatably arranged on the base through a swinging piece; the base is provided with a mounting groove, the connecting rod is arranged in the mounting groove and drives the swinging piece to rotate, so that the first pressing roller and the second pressing roller are synchronously pressed or kept away from the corresponding transmission rollers.

As a further improvement, a pressurizing structure is arranged on the base and used for compressing the first compression roller and the second compression roller to enable the first compression roller and the second compression roller to be close to the corresponding transmission rollers.

As a further improvement, the pressurizing structure comprises a spring, a first spring fixing part and a second spring fixing part, wherein the first spring fixing part is connected with two ends of the spring and is arranged on the base, and the second spring fixing part is arranged on the swinging piece.

As a further improvement, the device also comprises a driving component, wherein the driving component comprises the connecting rod and the mounting groove; the base comprises a fixing frame, and the transmission guide rail and the driving assembly are respectively positioned on two sides of the fixing frame.

As a further improvement, the connecting rod is connected with a reciprocating mechanism, the reciprocating mechanism comprises a motor and a cam fixedly connected with the motor, and a cavity matched with the cam is arranged on the connecting rod.

As a further improvement, a print head is arranged between the first conveying roller and the second conveying roller, and when the print head presses or moves away from the printing paper sheet, the first pinch roller and the second pinch roller oppositely move away from or press the printing paper sheet.

As a further improvement, an electrostatic brush for removing static electricity is arranged between the input port and the driving roller.

By adopting the technical scheme, the utility model discloses can gain following technological effect:

the utility model provides a printer of printing scraps of paper transmission, through setting up the recovery storehouse in the below position of storing the storehouse, install the drive roller on the transmission guide rail and with drive roller complex activity compression roller, and the transmission guide rail uses the drive roller to extend to both sides slope as the center, the input section with the slope bottom adaptation of storing the storehouse and with the recovery section of retrieving mouthful looks adaptation have been formed, when making printing scraps of paper along the input section transmission, it carries through the forward cooperation of drive roller with the activity compression roller along the slope bottom to print scraps of paper, the input section with slope bottom adaptation is in order to accept to carry the printing scraps of paper that come from slope bottom transmission, avoided printing scraps of paper to carry to the transmission guide rail in-process emergence scraps of paper skew by storing the storehouse, guaranteed to print scraps of paper transmission in-process steadily carry, more do benefit to the transmission.

Further, when printing the scraps of paper and transmitting to retrieving the storehouse along retrieving the section, it carries through the reverse cooperation of drive roller with the activity compression roller to print the scraps of paper, carry to retrieving the storehouse along retrieving the section direction, in order to realize that the transmission guide rail is printed and reverse transport recovery scraps of paper to the forward transport of printing the scraps of paper, it carries to accomplish in the transmission guide rail along the storage storehouse that is located the top and prints the back to print the scraps of paper, along the oblique output of retrieving the storehouse that is located the below, in order to realize the compact setting of printer, the transmission is more steady high-efficient.

Furthermore, a transmission roller group is arranged on the transmission guide rail, a first transmission roller and a second transmission roller of the transmission roller group synchronously rotate under the driving of the same motor to transmit the printing paper sheets, a first pressing roller and a second pressing roller which are correspondingly arranged with the first transmission roller and the second transmission roller are driven by the same connecting rod to synchronously press or keep away from the corresponding transmission rollers, a printing head is arranged between the first transmission roller and the second transmission roller in a matching mode, and when the printing head presses or keeps away from the printing paper sheets, the first pressing roller and the second pressing roller oppositely keep away from or press the printing paper sheets so as to realize the synchronous stable conveying of the printing paper sheets in the printing process.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic exploded view of a printer for printing sheet transport according to an embodiment of the present invention at a first viewing angle;

FIG. 2 is an enlarged view of a portion of the area I of FIG. 1;

fig. 3 is a schematic structural diagram of a printer for printing paper sheet transportation according to an embodiment of the present invention at a first viewing angle;

FIG. 4 is a schematic view of the base and the transport rail of FIG. 1;

FIG. 5 is a schematic view of the structure of FIG. 4 from a first perspective;

FIG. 6 is a schematic view of the structure of FIG. 4 from a second perspective;

fig. 7 is a schematic exploded view of a printer for printing sheet transport according to an embodiment of the present invention at a second viewing angle;

FIG. 8 is a schematic cross-sectional view taken along line B-B of FIG. 7;

fig. 9 is a schematic structural view of a mounting structure of a printer for printing paper sheet conveyance according to an embodiment of the present invention;

FIG. 10 is a schematic view of the structure of the connector of FIG. 9;

fig. 11 is a schematic exploded view of a movable platen of a printer for printing sheet transport according to an embodiment of the present invention in a first transport state;

fig. 12 is a schematic exploded view of a movable platen of a printer for printing sheet transport according to an embodiment of the present invention in a second transport state;

fig. 13 is a schematic exploded view of a printer of the present invention at a third viewing angle for printing sheet transport;

FIG. 14 is a schematic view of the structure of FIG. 13 from another perspective;

FIG. 15 is a schematic view of the structure of FIG. 14 from another perspective;

fig. 16 is a schematic view showing the engagement between the link and the slide groove in fig. 14/15.

Icon: 1-a base; 11-a chute; 12-a pressurized structure; 13-a spring; 14-a first spring fixation part; 2-a transport rail; 21-an input section; 22-a recovery section; 3-storage of the bin; 31-an input port; 32-inclined bottom; 33-a paper stop; 331-a bump; 34-an elastic member; 35-an adjustment member; 351-inner groove; 4-a recovery bin; 41-a recovery port; 5A-a drive roller; 5B, movable press rolls; 51-a mounting structure; 511-mounting grooves; 512-a connector; 5121-track groove; 5122-avoidance groove; 5123-tension spring fixing part; 513-a resilient member; 6-a set of transport rollers; 61A-first transfer roller; 61B-a first pressure roller; 62A-a second transport roller; 62B-a second pressure roller; 7-a connecting rod; 71-cavity; 72-a butting wheel; 8-a swinging member; 81-a second spring fixation; 9-a reciprocating mechanism; 91-a motor; 92-a cam; 10-a print head; a-printing paper sheet.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Examples

With reference to fig. 1 to 6, the present embodiment provides a printer facilitating the transportation of printing paper, which includes a base 1, a transportation rail 2 disposed on the base 1, and a storage bin 3 disposed above and below the transportation rail for storing blank printing paper a and a recovery bin 4 for recovering printed paper.

The transport guide 2 is arranged along the printing conveyance path of the printing paper piece a and is located at a side position of the base 1. The storage bin 3 and the recovery bin 4 are correspondingly provided with a paper sheet input port 31 and a paper sheet recovery port 41. The storage compartment 3 is provided with an inclined bottom 32 and the inlet 31 is provided in the inclined bottom 32. The magazine 3 can convey the blank printing paper piece a in the direction of the input port 31. The printing paper A is placed in the storage bin 3, and can be conveyed to the input port 31 along the inclined bottom 32 by a conveyor belt or a roller assembly, and a driving roller (not shown) is arranged at the input port 31 for conveying the printing paper A to the conveying guide rail 2 through the input port 31. Preferably, the printing paper sheet a is a hard paper with a certain thickness, and may be a card or a cardboard or the like, which is easier to transport by the printer of the present application.

It should be noted that, during the transportation of the printing paper sheets a along the paper sheet input port 31, the printer is prevented from being jammed or even unable to print due to the fact that two printing paper sheets a are transported into the printing transportation path at the same time. In the present embodiment, the paper sheet input port 31 of the storage bin 3 is provided with a paper blocking member 33 through which only one printing paper sheet can pass, and the paper blocking member 33 can adjust the opening degree of the paper sheet input port 31 according to the thickness of the printing paper sheet to satisfy the requirement of feeding one printing paper sheet a at a time from the storage bin 3, so that the gap between the paper blocking member 33 and the bottom of the storage bin 3 is larger than the thickness of one printing paper sheet and smaller than the thickness of two printing paper sheets, and thus during the feeding of the printing paper sheets, the paper blocking member 33 can only pass the printing paper sheet a at the bottommost of the storage bin 3 and block the printing paper sheet a on the penultimate printing paper sheet, so that only one printing paper sheet a can be transported along the input port 31 in a single feeding.

Specifically, the opening degree control of the sheet input port 31 by the sheet stopper 33 is realized in this way. The paper stopper 33 is disposed inside the storage compartment 3 to be movable up and down to change a gap between the bottom of the paper stopper 33 and the inclined bottom 32. Wherein the blocking member 33 is elastically disposed on the inner wall of the storage chamber 3 where the input port 31 is located by the elastic member 34, the elastic member 34 is vertically disposed, and one end of the elastic member abuts against the blocking member 33, and the other end of the elastic member is fixed on the inner wall of the storage chamber 3, so that the bottom of the blocking member 33 and the inclined bottom 32 have a gap at the input port 31. Further, in order to avoid the clearance from being so large that the paper stopper 33 loses its paper stopping function, an adjusting member 35 is further provided at the upper end of the paper stopper 33, and the adjusting member 35 abuts on the top of the paper stopper 33 to provide a clearance at the bottom of the paper stopper 33 in a thickness dimension between one sheet and two sheets, ensuring that the paper stopper 33 can accommodate only one sheet passing therethrough. And an adjusting member 35 for abutting against the regulating paper stopper member 33 according to the thickness of the paper sheet, whereby the clearance between the paper stopper member 33 and the bottom of the storage chamber 3 is changed by abutting the adjusting member 35 against the top position of the paper stopper member 33, to thereby function as a clearance regulating member.

Preferably, the adjusting member 35 is a rotatable adjusting disk, and a plurality of inner grooves 351 with different radians are arranged on the circumference of the disk, and an arc-shaped protrusion 331 matched with the inner grooves 351 is arranged on the top of the paper blocking member 33. By rotating the regulating member 35 so that the different inner grooves 351 come into abutment with the protrusions 331 of the paper stopper 33, different clearances between the paper stopper 33 and the bottom of the storage compartment 3 can be obtained. Different scales are correspondingly carved according to the paper sheets printed with different thicknesses, which indicates that the clearance between the paper blocking member 33 and the bottom of the storage bin 3 when the inner groove 351 abuts against the projection 331 is within the range of more than one paper sheet and less than two paper sheets, so as to play the role of paper blocking. Of course, the gap between the two is a fixed value, but the gap between the two is a value between one and two printed card thicknesses. Depending on the size of the test gap, different graduations may be engraved in the inner groove of the adjusting member 35 to quickly adjust the position of the paper stop 33 in the storage compartment depending on the thickness of the paper: if the adjusting member 35 is engraved with an inner groove 351 at 0.25, indicating that the thickness of the paper sheet is 0.25mm, when the adjusting member 35 abuts the projection 331, the gap between the paper stopper 33 and the bottom of the storage 3 is larger than 0.25mm and smaller than 0.5mm, so as to match the capability of inputting only one sheet of paper with a thickness of 0.25mm at the time of printing. Alternatively, the adjusting member 35 is engraved with an inner groove 351 at 0.76, which indicates that the thickness of the paper sheet is 0.76mm, and when the adjusting member 35 abuts the inner groove 351 and the projection 331 at this position, the gap between the paper stopper 33 and the bottom of the storage 3 is greater than 0.76mm and less than 1.52mm, so as to match the capability of inputting only one paper sheet with a thickness of 0.76mm during printing. The protrusion 331 abuts on the inner groove 351 so that the adjusting member 35 does not rotate without an external force, thereby ensuring that the position of the paper blocking member 33 remains unchanged. It should be noted that the adjusting member 35 may be a slide block capable of sliding up and down, or an eccentric cam, etc. in other embodiments, it is sufficient to adjust different heights of the contact point with the paper stopper 33 to change different gaps between the paper stopper 33 and the bottom of the storage chamber 3.

Further, a driving roller 5A and a movable pressing roller 5B engaged with the driving roller 5A are installed on the conveying guide 2, and the conveying guide 2 is inclined and extended toward both sides centering on the driving roller 5, thereby forming an input section 21 adapted to the inclined bottom 32 of the storage bin 3 and a recovery section 22 adapted to the recovery port 4. In the present embodiment, the angle of inclination of the input section 21 is the same as the angle of the inclined bottom 32 for stably receiving the printing paper sheet a. The driving roller 5A and the movable pressing roller 5B are oppositely arranged on a conveying path of the printing paper sheet A along the up-down direction, the movable pressing roller 5B can correspondingly shift left and right under the forward and reverse rotation of the driving roller 5A to change the conveying path of the printing paper sheet A, so that when the printing paper sheet A is conveyed along the input section 21, the printing paper sheet A is conveyed along the inclined bottom 32 through the forward matching of the driving roller 5A and the movable pressing roller 5B, the input section 21 matched with the inclined bottom 32 is used for bearing and conveying the printing paper sheet A conveyed from the inclined bottom 32, and the paper sheet shifting in the process that the printing paper sheet A is conveyed to the conveying guide rail 2 by the storage bin 3 is avoided. When the printing paper A is conveyed to the recovery bin 4 along the recovery section 22, the printing paper A is conveyed to the recovery bin 4 along the direction of the recovery section 22 through the reverse matching of the driving roller 5A and the movable pressing roller 5B. Realize transmission guide rail 2 to printing scraps of paper A's forward transport printing and reverse transport and retrieve scraps of paper, print scraps of paper A and carry to accomplish in transmission guide rail 2 along the input port 31 of the storage storehouse 3 that is located the top and print the back, along the recovery mouth 41 slant output of the recovery storehouse 4 that is located the below to realize the compact setting of printer, the transmission is more steady high-efficient.

Specifically, referring to fig. 7 to 10, the movable platen roller 5B is shifted left and right correspondingly by the forward and reverse rotation of the driving roller 5A to change the transport direction of the blank printing paper sheet a or the printed printing paper sheet a. Specifically, the movable platen roller 5B is shifted left and right by the rotation of the drive roller 5A, and the transport path of the printing paper a is changed. The movable pressure roller 5B is provided above the first roller 32 by a mounting structure 51 so that the movable pressure roller 5B is relatively rotatably abutted and engaged with the driving roller 5A during rotation. And the movable pressing roller 5B has a first conveying state when the driving roller 5A is rotated forward (at this time, the movable pressing roller 5B is shifted leftward to be close to the input section 21), and a second conveying state when the driving roller 5A is rotated backward (at this time, the movable pressing roller 5B is shifted rightward to be close to the recovery section 22), and correspondingly abuts against the driving roller 5A rotated forward to convey the printing paper sheet a to the printing area and abuts against the driving roller 5A rotated backward to convey the printing paper sheet a to the recovery bin 4.

Further, the mounting structure 51 includes a mounting groove 511 opened on the base 1, and a connecting member 512 engaged with the mounting groove 511 to be movable up and down. Base 1 sets up in the both sides position of printing paper piece A transfer path, and activity compression roller 5B passes through connecting piece 512 and transversely arranges between two bases 1 to the rotation of cooperation drive roller 5A, the transmission removes to the printing paper piece A between drive roller 5A and the activity compression roller 5B. The link member 512 is provided with a track groove 5121 for mounting the movable pressure roller 5B, and the link member 512 moves up and down along the mounting groove 511 by the elastic member 513 and is supported by the driving roller 5A in the mounting groove 511. The movable pressure roller 5B may be elastically supported on the driving roller 5A by an escape groove 5122 and a tension spring fixing portion 5123 provided at a lower end portion of the connecting member 512. Preferably, the elastic member 513 is a tension spring, one end of which is connected to the tension spring fixing portion 5123 and the other end of which is fixedly connected to the base 1, so as to ensure the downward elastic force of the movable compression roller 5B. And a guide bar (not shown) is arranged in the mounting groove 511, and a guide groove (not shown) matched with the guide bar is arranged on the connecting piece 512, so that the connecting piece 512 can slide up and down in the mounting groove 511.

Further, the movable pressing roller 5B is movably sleeved in the track groove 5121 opened in the horizontal direction on the connecting member 512 of the mounting structure 51 so as to be shifted left and right along the track groove 5121. When the movable pressing roller 5B is in the first conveying state, at this time, the movable pressing roller 5B is located at the leftmost position of the track groove 5121, and the movable pressing roller 5B and the driving roller 5A are mutually abutted and matched to convey the printing paper sheet a to the printing area along the input section 21. When activity compression roller 5B was in the second transport state, activity compression roller 5B was located the rightmost side position of track groove 5121 this moment, and when the relative first transport state in position of mutual butt between activity compression roller 5B and the drive roller 5A, leaned on the downside to realize that the slant is carried and is printed scraps of paper A and follow in recovery section 22 to the recovery storehouse 4.

More specifically, the track grooves 5121 on the link 512 are distributed on the left and right sides of the axis of the drive roller 5A, and the middle position of the track groove 5121 is disposed near the right position of the axis of the drive roller 5A so as to be closer to the recovery section 22. The movable pressure roller 5B is located on the left and right sides of the axis of the drive roller 5A at two extreme positions of left and right offset, respectively. It is understood that in other embodiments, the left side of the track groove 5121 is located right above the axis of the driving roller 5A, and the right side of the track groove 5121 is located right of the axis of the driving roller 5A, so that the movable pressing roller 5B sleeved in the track groove 5121 is located right above the driving roller 5A and in the right direction of the driving roller 5A during the process of entering and exiting the printing paper sheet a, respectively, so as to facilitate the oblique transportation of the printing paper along the output section 22 into the recycling bin 4. Because the movable compression roller 5B with vertical elastic force has vertical movement under the thrust action of the printing paper A, in order to ensure that the movable compression roller 5B is always closely tangent to the driving roller 5A, a movable balancing weight (not shown) is arranged above the movable compression roller 5B, so that the movable compression roller 5B is tightly attached to the driving roller 5A, and the connecting piece 512 is connected with the elastic piece 513, so that the connecting piece 512 always keeps downward elastic force when moving up and down, so that the movable compression roller 5B is tightly attached to the driving roller 5A when moving left and right. Note that the close contact force between the movable pressure roller 5B and the driving roller 5A is provided by the elastic member 513 and the weight. And the balancing weight is preferably the adsorption roller, has guaranteed the stable contact between the compression roller, and adsorption roller and activity compression roller 5B counter weight contact for adsorb the dust that glues back on the activity compression roller 5B (the dust is that it passes to in the activity compression roller 5B to print on the scraps of paper A), thereby adsorb the dust on the card to the adsorption roller on.

In the printing process, the driving roller 5A is driven by the driving motor to be conveyed forward, the movable pressing roller 5B is matched to move in the track groove 5121 along the direction of the printing area, when the movable pressing roller 5B abuts against the leftmost end of the track groove 5121 (in a first conveying state), a tangent line between the movable pressing roller 5B and the driving roller 5A forms a first transmission angle alpha with a horizontal line, the tangent direction at the moment is the same as the direction of the input section 21, so that the printing paper sheets A conveyed forward by the driving roller 5A are supported by the guide of the input section 21 along the tangent direction, and the printing paper sheets A are conveyed to the printing area. When printing scraps of paper A and needing to retrieve after printing the completion, drive roller 5A is carried under drive motor's drive in the reverse direction, cooperation activity compression roller 5B moves along retrieving section 22 direction, when activity compression roller 5B supported the rightmost end of track groove 5121 (be in the second transport state), tangent line between activity compression roller 5B and the drive roller 5A forms a second transmission angle beta with the water flat line, the tangent line at this moment is output line's direction, and the same with the direction of retrieving section 22, make printing scraps of paper A that carry via drive roller 5A along the tangent line direction support via retrieving mouthful 41 through retrieving section 22's direction, will print scraps of paper A and carry to recovery bin 4. The direction of the inlet section 21 and the recovery section 22 are both inclined downwards and the angle α ranges between 0-10 ° and β ranges between 10-45 °. The movable pressing roller 5B is switched between the first conveyance state and the second conveyance state by the forward and reverse conveyance of the driving roller 5A to effect a change in the direction of the conveyance path of the printing paper sheet a.

Referring to fig. 11 to 16, a conveying roller set 6 is disposed on the conveying guide rail 2 to convey the printing paper sheet a conveyed by the driving roller 5A to the printing area for printing and conveying. The conveying roller group 6 includes a first conveying roller 61A, a first pinch roller 61B, a second conveying roller 62A, and a second pinch roller 62B, the first conveying roller 61A and the second conveying roller 62A are driven by the same motor (not shown) to rotate synchronously, and the first pinch roller 61B and the second pinch roller 62B are driven by the same link 7 to press or move away from the corresponding conveying rollers synchronously. In the present embodiment, the first pinch roller 61B and the second pinch roller 62B are each rotatably provided on the base 1 via the swinging member 8. Be equipped with spout 11 on the base, connecting rod 7 is mobilizable arrange in spout 11 to remove about following spout 11 seting up the direction, thereby butt drive swing 8 is rotatory to make first pinch roller 61B and second pinch roller 62B compress tightly in step or keep away from corresponding transmission roller, with mutual cooperation when compressing tightly in step to printing scraps of paper A along the transmission of transfer rail 2 transmission.

Further, the base 1 is provided with a pressing structure 12 for pressing the first pressing roller 61B and the second pressing roller 62B to abut against the corresponding conveying rollers when abutting against the corresponding conveying rollers, so as to effectively abut against and stably convey the printing paper sheet a. In the present embodiment, the pressurizing structure 12 includes a spring 13, a first spring fixing portion 14 fixedly connected to both ends of the spring 13 and provided on the base 1, and a second spring fixing portion 81 provided on the swinging member 8. The spring 13 is disposed between the first spring fixing portion 14 and the second spring fixing portion 81 in a pressing manner, and provides an elastic pressing force for the pressing roller abutting against the corresponding transfer roller.

In this embodiment, the driving assembly (not shown) includes the above-mentioned link 7 and the chute 11, and the driving assembly is used to drive the swinging member 8 to swing back and forth, so as to drive the pressing rollers to synchronously press against or move away from the corresponding conveying rollers. And the base 1 includes a fixing frame (not shown) disposed along the conveying direction of the conveying guide 2 to partition the conveying guide 2 and the driving assembly to be located at both sides of the fixing frame, respectively.

It can be understood that the driving component drives to drive the swinging member 8 to swing back and forth, so as to realize the synchronous pressing or separation of the pressing roller and the corresponding transmission roller, and the pressing roller and the corresponding transmission roller can be connected with the reciprocating mechanism 9 through the connecting rod 7 to move back and forth in the sliding groove 11 to drive the swinging member 8 to swing back and forth. The reciprocating mechanism 9 comprises a motor 91 and a cam 92 fixedly connected with the motor 91, and the connecting rod 7 is provided with a cavity 71 matched with the cam 92. Specifically, the motor 91 rotates to rotate the cam 92, and in this embodiment, the motor 91 is connected to the rotating shaft on which the cam 92 is located through a belt transmission to drive the rotating shaft to rotate so as to drive the cam 92 to rotate. The rotating cam 92 abuts against the cavity 71 in the connecting rod 7 along the cavity walls at the left side and the right side, and the cam 92 and the upper side wall and the lower side wall of the cavity 71 are mutually avoided, so that the cavity wall in the cavity 71 of the connecting rod 7 is abutted against the cam 92 at the left side and the right side to drive the connecting rod 7 movably arranged in the sliding groove 11 to reciprocate along the left direction and the right direction (the opening direction of the sliding groove 11), and further the swinging piece 8 is driven to swing back and forth, and the first pressing roller 61B and the second pressing roller 62B are driven to reciprocate. Wherein, the connecting rod 7 drives the oscillating piece 8 to swing back and forth, a butt joint wheel 72 can be arranged at one end close to the oscillating piece 8 through the connecting rod 7, the butt joint wheel 72 and the oscillating piece 8 are mutually butt jointed, and the connecting rod 7 drives the butt joint wheel 72 to move left and right to butt and act on the oscillating piece 8 to swing back and forth when moving left and right in the sliding chute 11 under the left and right butt joint of the cam 92.

Referring to fig. 11 to 14, the print head 10 is disposed between the first conveying roller 61A and the second conveying roller 62A. When the print head 10 presses or separates from the printing paper piece a, the first pinch roller 61B and the second pinch roller 62B separate or press from the printing paper piece a in contrast thereto. The cooperation sets up the printer head 10 between first transmission roller 61A and second transmission roller 62A, and when printer head 10 pressed and prints scraps of paper A, began to print scraps of paper A, and the transmission roller that corresponds with it was kept away from to first pinch roller 61B and second pinch roller 62B this moment to dodge and print scraps of paper A, guarantee to print scraps of paper A and not disturbed by the pressing of pinch roller in the printing process. When the printing head 10 is far away from the printing paper piece a, the printing process is finished or the printing paper is not printed, at this time, the first pressing roller 61B and the second pressing roller 62B are abutted to the printing paper piece a of the corresponding conveying roller so as to press and convey the printing paper piece a, and the printing paper piece a is pressed to be stably conveyed synchronously.

Further, an electrostatic brush (not shown) for removing static electricity is provided between the input port 31 and the driving roller 5A to remove static electricity, improve printing quality, and eliminate a fire hazard.

Above only the utility model discloses an it is preferred embodiment, the utility model discloses a scope of protection not only limits in above-mentioned embodiment, and the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection.

Claims (10)

1. A printer beneficial to printing paper sheet transmission comprises a base, a transmission guide rail arranged on the base, a storage bin which is arranged up and down and used for storing blank printing paper sheets, and a recovery bin used for recovering printed paper sheets, wherein a paper sheet input port and a paper sheet recovery port are correspondingly arranged on the storage bin and the recovery bin; the conveying guide rail is provided with a driving roller and a movable pressing roller matched with the driving roller, and the conveying guide rail takes the driving roller as the center to obliquely extend towards two sides, so that an input section matched with the inclined bottom of the storage bin and a recovery section matched with the recovery port are formed.

2. The printer of claim 1, wherein the sheet input port of the storage compartment is provided with a sheet blocking member for allowing only one printed sheet to pass therethrough, the sheet blocking member being adjustable in opening degree according to a thickness of the printed sheet.

3. The printer of claim 1, wherein the transport guide is provided with a transport roller set, the transport roller set comprises a first transport roller, a first pressure roller, a second transport roller and a second pressure roller, the first transport roller and the second transport roller are driven by the same motor to rotate synchronously, and the first pressure roller and the second pressure roller are driven by the same connecting rod to synchronously press or move away from the corresponding transport rollers.

4. A printer for facilitating the transport of a print sheet according to claim 3 wherein said first pinch roller and said second pinch roller are each rotatably mounted to said base by a swing member; the base is provided with a sliding groove, the connecting rod is arranged in the sliding groove, and the swinging piece is driven to rotate, so that the first pressing roller and the second pressing roller are synchronously pressed or kept away from the corresponding transmission rollers.

5. A printer for facilitating the transport of printed sheets as in claim 4 wherein the base is provided with a pressing structure for pressing the first and second pressure rollers closer to the respective transport rollers.

6. The printer of claim 5, wherein the biasing structure comprises a spring and a first spring retaining portion attached to the base and a second spring retaining portion attached to the swinging member at opposite ends of the spring.

7. A printer for facilitating the transport of printed sheets according to any one of claims 4 to 6, further comprising a drive assembly including said link and said chute; the base comprises a fixing frame, and the transmission guide rail and the driving assembly are respectively positioned on two sides of the fixing frame.

8. The printer as claimed in claim 7, wherein the link is connected to a shuttle mechanism, the shuttle mechanism including a motor and a cam fixedly connected to the motor, the link having a cavity for engaging the cam.

9. A printer for facilitating the transport of a print sheet according to claim 7 wherein a print head is provided between the first transport roller and the second transport roller, the first pinch roller and the second pinch roller being opposite to and for pushing away or pushing against the print sheet when the print head is pushing or pushing away from the print sheet.

10. A printer for facilitating the transport of printed sheets according to claim 1, wherein an electrostatic brush for removing static electricity is provided between the input port and the drive roller.

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