CN110271305A - A kind of paper feed driving device and the printer comprising it - Google Patents

Abstract

The invention relates to a paper-feeding driving device and a printer including the paper-feeding driving device. The paper-feeding driving device includes a frame, a paper-feeding driving roller, a pinch roller and an adjustment mechanism. It includes a moving mechanism, a pressure spring and a slider. The pressure roller is connected to the slider in rotation and arranged parallel to the paper driving roller. The moving mechanism is installed on the frame. Fixedly connected, the frame has a first chute, the slider is arranged in the first chute and can slide along the chute, and the slider approaches or moves away from the paper driving roller under the action of the moving mechanism. The beneficial effects of the present invention are: the paper-feeding driving device of the present invention can flexibly adjust the distance between the pinch roller and the paper-feeding driving roller through the moving mechanism to adapt to printing media of different thicknesses, and the compression spring can avoid paper jamming during the paper-feeding process. Phenomenon, and make the pinch roller always press the paper drive roller.

Description

A paper driving device and a printer including the same

technical field

The invention relates to the field of printers, in particular to a paper-feeding driving device and a printer comprising the same.

Background technique

During the printing process of the printer, after the printing medium is printed, the printing medium needs to be provided with driving force during the traveling process. In the prior art, rotating rollers are usually arranged below or above the printing medium to drive the printing medium to move through friction, but this transmission method is prone to slipping and is unreliable.

Contents of the invention

The technical problem to be solved by the invention is how to drive the printing medium to move.

The technical scheme of the present invention to solve the above-mentioned technical problems is as follows: a paper-feeding driving device, including a frame, a paper-feeding driving roller, a pinch roller and an adjustment mechanism, and the two ends of the paper-feeding driving roller are rotatably connected to the frame , the adjusting mechanism includes a moving mechanism, a pressure spring and a slider, the pressing roller is rotatably connected to the slider and arranged parallel to the paper driving roller, the moving mechanism is installed on the frame, The two ends of the compression spring are respectively abutted or fixedly connected with the moving mechanism and the slider, and the frame has a first chute, and the slider is arranged in the first chute and can move along the The chute slides, and the slider approaches or moves away from the paper driving roller under the action of the moving mechanism.

The beneficial effects of the present invention are: the moving mechanism pushes the slider to move and makes the pinch roller close to the paper-feeding driving roller, the printing medium is clamped between the paper-feeding driving roller and the pinching roller, and the paper-feeding driving roller rotates and is driven by friction Drive the printing medium to move, the pinch roller presses the printing medium and rotates with the movement of the printing medium, a compression spring is set between the moving mechanism and the slider, when the printing medium is wrinkled or uneven due to other reasons, the printing The thickness of the medium changes to push the pressure roller away from the paper driving roller. At this time, the pressure spring is compressed to allow the printing medium to pass smoothly, and it can also press the printing medium. The paper feeding driving device of the present invention can flexibly adjust the distance between the pinch roller and the paper feeding driving roller through the moving mechanism to adapt to printing media of different thicknesses. Always hold down on the drive rollers.

On the basis of the above technical solutions, the present invention can also be improved as follows.

Further, the moving mechanism includes a first motor, a screw and a moving block, the first motor is fixedly connected to the frame, the frame has a second chute, and the moving block is slidably arranged on the second In the chute, the output shaft of the first motor is in transmission connection with one end of the screw, and the screw is threadedly connected with the moving block, and the first motor drives the screw to rotate and drives the moving block at the sliding in the second chute, and the moving block abuts or is fixedly connected to one end of the compression spring.

The beneficial effect of adopting the above further solution is that: the first motor drives the screw to rotate, the screw drives the moving block to move, and the moving block passes through the pressure spring to move the slider to realize the adjustment of the distance between the pinch roller and the paper driving roller. Through the threaded connection between the screw rod and the moving block, the moving distance of the moving block can be precisely adjusted through the number of rotations and pitch of the screw rod, and the adjustment precision is high, the structure is simple, and the reliability is high.

Further, it also includes a limiting plate and a limiting pin, one end of the limiting plate is fixedly connected to the slider, the limiting plate has a strip hole, and one end of the limiting pin is fixed to the moving block connected, and the other end is slidably set in the strip hole.

The beneficial effect of adopting the above further solution is: the limit plate and the limit pin limit the distance between the slider and the moving block, avoid the detachment of the pressure spring, and at the same time realize the guidance during the relative sliding process of the slider and the moving block.

Further, the moving mechanism also includes a connection block, one end of the connection block is fixedly connected to the moving block, the other end of the connection block has a compression spring hole, and one end of the compression spring abuts against the compression spring inside the hole.

The beneficial effect of adopting the above further solution is: the pressure spring hole in the connection block realizes the positioning of the pressure spring, avoids the displacement of the pressure spring, the installation of the pressure spring is simple, and the connection is reliable.

Further, one end of the slider facing the connecting block has a second compression spring hole adapted to the connecting block, and the other end of the compression spring abuts in the second compression spring hole, the The other end of the connection block slides in the second compression spring hole.

The beneficial effect of adopting the above-mentioned further scheme is: the other end of the connection block is in the second compression spring hole, and the compression spring is limited in the compression spring hole and the second compression spring hole, while the other end of the connection block is connected with the second compression spring hole Guidance during movement can also be realized.

Further, it also includes a screw bearing seat and a screw bearing, the screw bearing is sleeved in the screw bearing seat, the screw bearing is sleeved on the outside of the screw, and the screw bearing seat 7 is fixed to the frame connect.

The beneficial effect of adopting the above further solution is that: the screw bearing seat and the screw bearing support the screw, ensure the strength of the screw, and avoid deformation of the screw due to uneven stress.

Further, the screw bearing seat and the screw bearing are two and arranged in one-to-one correspondence, and the two screw bearings are respectively sleeved on both ends of the screw, and the moving block faces one side of the frame. There is an accommodation groove on one side, the other end of the screw rod passes through the side wall of the accommodation groove, the middle part of the screw rod is threadedly connected with the side wall of the accommodation groove, and one of the screw bearing seats is accommodated in the accommodation groove Inside.

The beneficial effect of adopting the above further solution is: to realize the limit of the moving block, and at the same time, one of the screw bearing seats is in the receiving groove, the screw is more stable during the movement, the overall structure is compact, and the volume of the paper driving device is reduced.

Further, there are two adjustment mechanisms, and the two adjustment mechanisms are respectively installed at both ends of the pressure roller.

The beneficial effect of adopting the above further scheme is that adjustment mechanisms are provided at both ends of the pinch roller, so that the pinch roller moves smoothly and is evenly stressed.

Further, a second motor is further included, the second motor is fixedly connected to the frame, and the output shaft of the second motor is fixedly connected to the paper-feeding driving roller and drives the paper-feeding driving roller to rotate.

The present invention also relates to a printer, including the paper driving device.

Description of drawings

Fig. 1 is a three-dimensional diagram of a paper driving device of the present invention;

Fig. 2 is a front sectional view of a paper driving device of the present invention;

Fig. 3 is a front sectional view of an adjustment mechanism of a paper driving device of the present invention;

Fig. 4 is a top view of a paper driving device of the present invention.

In the accompanying drawings, the list of parts represented by each label is as follows:

1. Frame, 11. First chute, 12. Second chute, 2. Paper feeding drive roller, 3. Pressure roller, 4. Adjusting mechanism, 41. Moving mechanism, 411. First motor, 412. Screw rod, 413, moving block, 414, connection block, 42, stage clip, 43, slide block, 5, limit plate, 6, limit pin, 7, screw bearing seat, 8, screw bearing, 9, second motor .

Detailed ways

The principles and features of the present invention are described below, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

As shown in Figures 1-4, the present invention relates to a paper-feeding driving device, comprising a frame 1, a paper-feeding driving roller 2, a pinch roller 3 and an adjustment mechanism 4, the two ends of the paper-feeding driving roller 2 are connected to The frame 1 is rotatably connected, the adjusting mechanism 4 includes a moving mechanism 41, a pressure spring 42 and a slider 43, and the pressing roller 3 is rotatably connected to the slider 43 and is parallel to the paper driving roller 2 Set, the moving mechanism 41 is installed on the frame 1, the two ends of the compression spring 42 are respectively abutted or fixedly connected with the moving mechanism 41 and the slider 43, and the frame 1 has a first A chute 11, the slider 43 is arranged in the first chute 11 and can slide along the chute 11, the slider 43 approaches or moves away from the walking mechanism under the action of the moving mechanism 41 Paper Drive Roller 2.

Specifically, the paper-feeding driving roller 2 is connected to the motor of the printer through a transmission mechanism, and rotates under the drive of the printer's motor; or, it also includes a second motor 9, which directly drives the paper-feeding driving roller 2 turn.

Specifically, two ends of the paper-feeding driving roller 2 are sleeved with driving roller bearings, and the paper-feeding driving roller 2 is rotatably connected to the frame 1 through the driving roller bearings.

As a further solution of this embodiment, the moving mechanism 41 includes a first motor 411, a screw 412 and a moving block 413, the first motor 411 is fixedly connected to the frame 1, and the frame 1 has a second slide slot 12, the moving block 413 is slidably disposed in the second chute 12, the output shaft of the first motor 411 is in drive connection with one end of the screw 412, and the screw 412 is threaded with the moving block 413 connected, the first motor 411 drives the screw 412 to rotate and drives the moving block 413 to slide in the second chute 12, and the moving block 413 abuts or is fixedly connected to one end of the compression spring 42 .

Specifically, the moving mechanism 41 can also be composed of a hydraulic cylinder and a moving block 413, the output end of the hydraulic cylinder is fixedly connected to the moving block 413, and the moving block 413 abuts or is fixedly connected to one end of the compression spring 42 .

Specifically, the first chute 11 communicates with the second chute 12 .

Specifically, the first motor 411 is connected to one end of the screw 412 through a coupling.

As a further solution of this embodiment, as shown in Figure 1 and Figure 2, it also includes a limiting plate 5 and a limiting pin 6, one end of the limiting plate 5 is fixedly connected to the slider 43, the limiting The plate 5 has a strip-shaped hole, one end of the limiting pin 6 is fixedly connected with the moving block 413 , and the other end is slidably disposed in the strip-shaped hole.

As a further solution of this embodiment, the moving mechanism 41 also includes a connecting block 414, one end of the connecting block 414 is fixedly connected to the moving block 413, and the other end of the connecting block 414 has a compression spring hole. One end of the compression spring 42 abuts against the compression spring hole.

As a further solution of this embodiment, the end of the slider 43 facing the connecting block 414 has a second compression spring hole that is compatible with the connecting block 414, and the other end of the compression spring 42 abuts against the connecting block 414. In the second compression spring hole, the other end of the connecting block 414 slides in the second compression spring hole.

As a further solution of this embodiment, it also includes a screw bearing seat 7 and a screw bearing 8, the screw bearing 8 is set inside the screw bearing seat 7, and the screw bearing 8 is set on the outside of the screw 412, The screw bearing housing 7 is fixedly connected with the frame 1 .

As a further solution of this embodiment, the screw bearing seat 7 and the screw bearing 8 are two and arranged in one-to-one correspondence, and the two screw bearings 8 are respectively sleeved on both ends of the screw 412, so The moving block 413 has a receiving groove on one side facing the frame 1, the other end of the screw rod 412 passes through the side wall of the receiving groove, and the middle part of the screw rod 412 is threadedly connected with the side wall of the receiving groove , one of the screw bearing seats 7 is accommodated in the accommodation groove.

As a further solution of this embodiment, there are two adjustment mechanisms 4 , and the two adjustment mechanisms 4 are respectively installed at both ends of the pressure roller 3 .

Specifically, both the limit plate 5 and the limit pin 6 are two, the limit plate 5 is set in one-to-one correspondence with the adjustment mechanism 4, and the limit pin 6 and the adjustment mechanism 4 One-to-one correspondence settings. There are four screw bearing seats 7 and four screw bearings 8 , and each screw 412 is correspondingly provided with two screw bearing seats 7 and two screw bearings 8 .

As a further solution of this embodiment, a second motor 9 is also included, the second motor 9 is fixedly connected to the frame 1, the output shaft of the second motor 9 is fixedly connected to the paper driving roller 2 and Drive the paper-feeding driving roller 2 to rotate.

Specifically, the output shaft of the second motor 9 is in transmission connection with the paper-feeding driving roller 2 through a reducer. Specifically, the output shaft of the second motor 9 is fixedly connected to the input end of the reducer, and the output end of the reducer is fixedly connected to the paper driving roller 2 .

A printer includes the paper driving device. Both the first motor 411 and the second motor 9 are electrically connected to the controller of the printer. The printer also includes a printing assembly and a printing medium reel, one end of the printing medium is wound on the printing medium reel, and the other end passes through the printing assembly and is sandwiched between the paper driving roller 2 and the pinch roller 3, the printing assembly realizes printing, The paper driving roller 2 drives the printing medium to move through friction.

In the description of the present invention, it should be noted that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial" , "radial", "circumferential" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the referred device or Elements must have certain orientations, be constructed and operate in certain orientations, and therefore should not be construed as limitations on the invention.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

In the present invention, unless otherwise clearly specified and limited, the first feature may be in direct contact with the first feature or the first and second feature may be in direct contact with the second feature through an intermediary. touch. Moreover, "above", "above" and "above" the first feature on the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. "Below", "beneath" and "beneath" the first feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is less horizontally than the second feature.

In the description of this specification, descriptions with reference to the terms "one embodiment", "some embodiments", "example", "specific examples", or "some examples" mean that specific features described in connection with the embodiment or example , structure, material or characteristic is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the described specific features, structures, materials or characteristics may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples and features of different embodiments or examples described in this specification without conflicting with each other.

In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it may be mechanically connected or electrically connected; it may be directly connected or indirectly connected through an intermediary, and it may be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection of the present invention. within range.

Claims (10)

1. a kind of paper feed driving device, which is characterized in that including rack (1), paper feed driven roller (2), pressing roller (3) and adjust machine Structure (4), the both ends and the rack (1) of the paper feed driven roller (2) are rotatablely connected, and the regulating mechanism (4) includes moving machine Structure (41), pressure spring (42) and sliding block (43), the pressing roller (3) and the sliding block (43) are rotatablely connected and drive with the paper feed Dynamic roller (2) are arranged in parallel, and the mobile mechanism (41) is mounted on the rack (1), the both ends of the pressure spring (42) respectively with The mobile mechanism (41) abuts or is fixedly connected with the sliding block (43), and the rack (1) has first sliding groove (11), described Sliding block (43) is set in the first sliding groove (11) and can slide along the sliding slot (11), and the sliding block (43) is in the movement Close to or far from the paper feed driven roller (2) under the action of mechanism (41).

2. a kind of paper feed driving device according to claim 1, which is characterized in that the mobile mechanism (41) includes the first electricity Machine (411), screw rod (412) and movable block (413), the first motor (411) are fixedly connected with the rack (1), the machine Frame (1) has second sliding slot (12), and the movable block (413) is slidably arranged in the second sliding slot (12), first electricity The output shaft of machine (411) and the one end of the screw rod (412) are sequentially connected, the screw rod (412) and the movable block (413) spiral shell Line connection, the first motor (411) drive the screw rod (412) to rotate and drive the movable block (413) described second Sliding, the movable block (413) abut or are fixedly connected with one end of the pressure spring (42) in sliding slot (12).

3. a kind of paper feed driving device according to claim 2, which is characterized in that further include limit plate (5) and spacer pin (6), one end of the limit plate (5) is fixedly connected with the sliding block (43), and the limit plate (5) has strip-shaped hole, the limit One end of position pin (6) is fixedly connected with the movable block (413), and the other end is slidably arranged in the strip-shaped hole.

4. a kind of paper feed driving device according to claim 2, which is characterized in that the mobile mechanism (41) further includes connection One end of block (414), the link block (414) is fixedly connected with the movable block (413), the link block (414) it is another End has compression spring hole, and one end of the pressure spring (42) is connected in the compression spring hole.

5. a kind of paper feed driving device according to claim 4, which is characterized in that the sliding block (43) is towards the link block (414) one end is with compatible second compression spring hole, the other end of the pressure spring (42) are connected to the link block (414) In second compression spring hole, the other end of the link block (414) slides in second compression spring hole.

6. a kind of paper feed driving device according to claim 2, which is characterized in that further include screw-bearing seat (7) and screw rod Bearing (8), the screw-bearing (8) are set in the screw-bearing seat (7), and the screw-bearing (8) is set in the spiral shell The outside of bar (412), the screw-bearing seat (7) are fixedly connected with the rack (1).

7. a kind of paper feed driving device according to claim 6, which is characterized in that the screw-bearing seat (7) and the spiral shell Rod bearing (8) is two and is arranged in a one-to-one correspondence, and two screw-bearings (8) are respectively sleeved at the screw rod (412) Both ends, the movable block (413) have holding tank towards the side of the rack (1), and the other end of the screw rod (412) passes through The middle part of the side wall of the holding tank, the screw rod (412) is connect with the sidewall thread of the holding tank, one of them described spiral shell Rod bearing seat (7) is contained in the holding tank.

8. any one of -7 a kind of paper feed driving device according to claim 1, which is characterized in that the regulating mechanism (4) is Two, two regulating mechanisms (4) are respectively arranged in the both ends of the pressing roller (3).

9. any one of -7 a kind of paper feed driving device according to claim 1, which is characterized in that it further include the second motor (9), Second motor (9) is fixedly connected with the rack (1), the output shaft of second motor (9) and the paper feed driven roller (2) it is fixedly connected and the paper feed driven roller (2) is driven to rotate.

10. a kind of printer, which is characterized in that including any one of the claim 1-9 paper feed driving device.