TWI392593B - Media pick system and media pick method thereof - Google Patents

Description

Paper taking mechanism and paper taking method thereof

The present invention relates to a paper take-up mechanism, and more particularly to a paper take-up mechanism that can change the moment applied to the pick-up truss to achieve paper-taking purposes.

The printer is an indispensable output tool in modern information products. The quality of printing is generally recognized. In terms of printing function, not only print quality and printing speed, but also stability and reliability are required. Degree, high stability and high reliability mean that the paper feeding mechanism can provide high paper feeding success rate. In order to achieve smooth feed and high print quality requirements, the design of the entire paper feed mechanism of the printer is very important.

Most of the current paper picking mechanisms use a paper feed roller disposed at one end of the paper picking truss to achieve the purpose of paper feeding, such as contacting the paper feed wheel with the paper at the timing of the paper picking rotation, and using the paper feed wheel. Rotate to feed the sheets one by one into the work area.

For example, in the design of a conventional paper feeding mechanism, a fixed moment is applied to the paper jib, and the angles of the paper truss are controlled by means of gears, connecting rods and the like that are linked to each other to achieve paper feeding. purpose. However, the above-mentioned mechanism has a considerable number of complicated components, so that the efficiency of production assembly is low; in addition, the drive motor in the conventional mechanism must provide full-load power output at all times, so that energy consumption cannot be effectively saved.

The main object of the present invention is to provide a paper take-up mechanism which changes the direction of the moment that the force applying member is applied to the paper picking truss, so that the structure of the present invention is simple and can be modularized, thereby reducing the complexity of the mechanism. At the same time, the reliability of the paper feeding is improved.

In order to achieve the above object, the present invention provides a paper take-up mechanism comprising: a paper take-up gantry that swings between a paper take-up position and a non-pick-out position, and a first paper feed roller and a first a second paper feed roller; a rocking gear arm interlocking the second paper feed roller; and the rocking gear arm is provided with a rocking gear; a rocking gear lever having one end connected to the rocking gear arm and the other end connected to the a urging member, and the urging member is disposed on an eccentric shaft of the yaw gear lever; thereby, when the second paper feed roller and the yaw gear arm are driven by an external force to rotate in a first direction, the yaw gear arm When the rocking gear is engaged with an annular toothed portion to drive the rocking gear lever to rotate in the first direction, the force applying member is linked by the eccentric shaft to swing the paper picking truss to the pole by the torque applied by the force applying member a paper picking position, the first paper feed roller is in contact with the paper; and when the second paper feed roller and the rocking gear arm are driven by an external force to rotate in a second direction, the rocking gear on the rocking gear arm engages the ring gear When the swinging gear lever rotates in the second direction, the eccentric shaft is interlocked with the urging member to be reset, and the paper truss is swung to the non-picking position by the torque applied by the urging member, so that the A paper feed roller is away from the paper.

The present invention further provides a paper taking method, comprising the steps of: maintaining a torque applied to the paper draping by a force applying member, maintaining the paper draping frame at the non-picking position; and applying an external force to drive the second feeding The paper roller and the rocking gear arm rotate in a first direction. When the rocking gear on the rocking gear arm engages the annular tooth portion to drive the rocking gear lever to rotate in the first direction, the biasing member is linked by the eccentric shaft. Using the torque applied by the force applying member to swing the paper picking truss from the non-picking position to the paper take-up position, so that the first paper feed roller contacts the paper; and the external force drives the second paper feed roller and the The rocking gear arm rotates in a second direction, and when the rocking gear on the rocking gear arm engages the annular tooth portion to drive the rocking gear lever to rotate in the second direction, the biasing member is coupled to the biasing member to be reset to utilize The moment applied by the urging member oscillates the pickup rig from the pickup position to the non-pickup position, so that the first feed roller is away from the paper.

The invention has the following beneficial effects: the invention utilizes the direction of changing the moment applied by the force applying member on the paper truss to achieve the effect of lifting or lowering the paper truss, so that the conventional complicated mechanism can be omitted. Simplify the overall structure, and achieve the purpose of paper picking and paper feeding with a modular mechanism.

For a better understanding of the features and technical aspects of the present invention, reference should be made to the accompanying drawings.

The invention provides a paper taking mechanism, which mainly utilizes the action of the forward torque and the reverse torque to achieve the position adjustment of the paper take-up rig, so that the paper feed roller can be contacted or away from the paper. Referring to the first figure and the first A diagram, the paper take-up mechanism 1 includes: a paper picking truss 10, a first paper feed roller 11, a second paper feed roller 12, a rocking gear arm 13, a rocking gear lever 14, and a force applying member. 15. The paper take-up mechanism 1 of the present invention can be applied to a printer, a photocopier, a multifunction machine, or the like.

Referring to the first figure, the paper draping frame 10 is the main body of the paper taking mechanism of the present invention, wherein the first paper feed roller 11 and the second paper feed roller 12 are disposed on the paper plucking frame 10, and The paper truss 10 is pivoted between the paper take-up position and the non-pick-out position with the axis 121 of the second paper feed roller 12 as a rotating shaft, so that the first paper feed roller 11 can contact the paper or away from the paper. The first paper feed roller 11 is also referred to as a paper feed roller, and the second paper feed roller 12 is also referred to as a paper feed roller.

The rocking gear arm 13 is interlocked with the second paper feed roller 12, in other words, the rocking gear arm 13 is rotated clockwise/counterclockwise in synchronization with the second paper feed roller 12. A rocking gear 131 and a bump 132 are disposed on the rocking gear arm 13.

The two ends of the rocking gear lever 14 are respectively connected to the rocking gear arm 13 and the force applying member 15, and the force applying member 15 can be a spring, one end of which is attached to the eccentric shaft 141 of the rocking gear lever 14, and the other end is fixed to An end point 151 (please refer to FIG. 2A), so that when the wobble gear lever 14 rotates, the eccentric shaft 141 can generate a torque in a different direction with respect to the axis 121 of the second paper feed roller 12. In the present embodiment, one end of the rocking gear lever 14 is provided with an arcuate groove 142, and the protrusion 132 of the rocking gear arm 13 can push against the arcuate groove 142 to drive the rotation of the rocking gear lever 14 and utilize the above-mentioned eccentric shaft The change of position 141 (reversely moving between the pick-up point B and the non-pick point A, as in the second A and second C), to apply the torque in different directions to the picking tract 10. When the rocking gear arm 13 rotates, the rocking gear 131 thereon can be engaged with an annular tooth portion 161 to generate a first direction driving force or a second direction driving force, thereby driving the rocking gear lever 14 to rotate clockwise or counterclockwise. In other words, the eccentric shaft is linked to the urging member to generate a movement or a reset action.

In another embodiment, the present invention further includes an upper cover 16 disposed above the pickup truss 10 and a paper take-up truss cover 18 assembled to the side of the pickup truss 10; The shape of the annular portion 161 is corresponding to the rocking gear 131 of the rocking gear arm 13; and the rocking gear lever 14 is disposed through the paper picking hood cover 18, Both ends of the rocking gear lever 14 are protruded from the paper take-up hood cover 18.

Referring to FIGS. 2A to 2C, it is shown that the paper take-up gantry 10 of the paper take-up mechanism 1 is swung to the paper take-up position, so that the first paper feed roller 11 contacts the paper. First, the external force drives the second paper feed roller 12 to rotate clockwise (first direction) with the rocking gear arm 13, and in the specific embodiment, the motor can be used to provide the external force, and the second drive shaft 17 is used to drive the second. The paper feed roller 12 rotates clockwise with the rocking gear arm 13.

Please cooperate with the fourth A and B diagrams. During the rotation, the wobble gear 131 on the rocking gear arm 13 can be engaged with an annular tooth portion 161 to generate a driving force in a clockwise direction (first direction). The rocking gear lever is further rotated in a clockwise direction; in the embodiment, when the rocking gear 131 on the rocking gear arm 13 is engaged with the annular tooth portion 161, the bump 132 on the rocking gear arm 13 is caused. The first end 1421 of the curved slot 142 is moved to the second end 1422 and applied to the second end 1422 to form a clockwise driving force and drive the rocking gear lever 14 to rotate clockwise; at the same time, by The eccentric shaft 141 is interlocked with the urging member 15 so that the eccentric shaft 141 connected to the urging member 15 is also rotated from the non-pick point A to the pickup point B with respect to the yoke 121, so that the axis 121 is In the case of the fulcrum, the moment formed by the urging member 15 for the eccentricity 121 is changed from the uplifting state to the lower squeezing state, so that the paper draping frame 10 of the paper taking mechanism 1 is swung to the paper taking position, so that The first paper feed roller 11 contacts the paper for the purpose of feeding paper. In other words, in this case, by changing the position of the point of application, the counterclockwise moment applied to the picking truss 10 (such as the fourth A picture) is converted into a clockwise moment (such as the fourth B picture), and the following paper is taken. The frame 10 allows the first paper feed roller 11 to contact the paper.

On the other hand, the third to third figures D show that the paper take-up tract 10 of the paper take-up mechanism 1 is swung to the non-pick-out position. Similarly, an external force can be applied by the motor to drive the second paper feed roller 12 to rotate counterclockwise (second direction) with the rocking gear arm 13 through the drive shaft 17.

During the rotation, the rocking gear 131 on the rocking gear arm 13 can be engaged with the annular tooth portion 161 to generate a counterclockwise driving force, thereby driving the rocking gear lever to rotate in a counterclockwise direction; When the rocking gear 131 on the rocking gear arm 13 is engaged with the annular tooth portion 161, the bump 132 on the rocking gear arm 13 is moved by the second end 1422 of the curved groove 142 to the first end 1421 And applying a force to the first end 1421 to form the counterclockwise driving force and driving the rocking gear lever 14 to rotate counterclockwise; at the same time, the biasing member 15 is linked by the eccentric shaft 141 to be reset, in other words, the connection is performed. The eccentric shaft 141 of the force member 15 also rotates the non-pick point A by the pickup point B with respect to the axis 121. Therefore, when the shaft center 121 is used as a fulcrum, the urging member 15 is formed for the shaft 121. The moment is changed from the lower pressure state to the upward state, so that the paper take-up gantry 10 of the paper take-up mechanism 1 is swung to the non-pick-out position, and the first paper feed roller 11 is moved away from the paper to stop the paper feed function. In other words, in this case, by changing the position of the point of application, the counterclockwise torque applied to the picking truss 10 (such as the fourth B picture) becomes a clockwise moment (such as the fourth A picture), and the paper is taken up. The frame 10 allows the first paper feed roller 11 to be moved away from the paper to stop feeding.

The invention further provides a paper taking method, comprising the steps of: maintaining the picking truss by using the force applied by the force applying member 15 on the non-pick point A on the picking tract 10 in an initial state. In the non-pickup position. As shown in FIG. 2A and FIG. 4A, the urging member 15 can be a spring whose elastic force F forms a counterclockwise moment on the shaft 121 at the non-pick point A (this invention defines In the reverse torque, the paper truss 10 is lifted above to maintain the picking truss 10 in the non-pick-out position.

In the paper feeding state, the driving force of the motor is transmitted through the drive shaft 17 to drive the second paper feed roller 12 and the rocking gear arm 13 to rotate clockwise (first direction), when the rocking gear 131 on the rocking gear arm 13 meshes The annular tooth portion 161 is configured to generate a clockwise (first direction) driving force, for example, by the bump 132 on the rocking arm 13 to bias the first end 1421, thereby driving the rocking gear lever 14 to face clockwise. The (first direction) is rotated, and the urging member 15 is interlocked by the eccentric shaft 141 to rotate the eccentric shaft 141 in the clockwise direction (first direction) to move from the non-paper take-up point A to the pickup point B. At this time, as shown in the second C diagram and the fourth B diagram, the elastic force F constitutes a clockwise moment to the shaft center 121 at the pickup point B (the present invention defines it as a positive moment), and the following compression The paper truss 10 swings the paper picking truss 10 to the paper take-up position, so that the first paper feed roller 11 comes into contact with the paper to achieve paper feed.

When the paper feeding process is stopped, the driving force of the motor is driven to drive the second paper feed roller 12 and the rocking gear arm 13 to rotate counterclockwise (second direction) through the drive shaft 17, when the rocking gear 131 on the rocking gear arm 13 Engaging the annular toothed portion 161 to generate a counterclockwise (second direction) driving force, for example, by the bump 132 on the rocking gear arm 13 to apply force to the second end 1422, thereby driving the rocking gear lever 14 toward the counterclockwise direction The direction (second direction) is rotated, and the urging member 15 is interlocked by the eccentric shaft 141 to be reset, and even if the eccentric shaft 141 is rotated in the counterclockwise direction (second direction), the paper picking point B is moved to the non-paper picking point A. At this time, as shown in the third D diagram and the fourth A diagram, the elastic force F forms a counterclockwise moment (ie, returns to the reverse moment) to the axis 121 at the non-pick point A, and the paper is lifted upward. The truss 10 causes the pickup rig 10 to swing back to the non-pickup position, and the first paper feed roller 11 is moved away from the paper to stop feeding.

In summary, the present invention has the following advantages:

1. The structure of the paper taking mechanism of the invention is simple, and the modular design can achieve the change of the positive torque and the reverse torque, so that the paper truss is formed to form the paper under the paper and lifted away from the paper. Further, the paper picking operation is completed, so that the invention can reduce the mechanism cost and achieve the reduction of the size of the printing machine; further, the invention can improve the reliability of paper feeding.

2. The invention has the effect of reducing the output power of the motor. The paper take-up mechanism of the present invention does not require the motor to operate at full load power at all times, so that the present invention can achieve an effective energy saving effect compared to the conventional paper take-up mechanism.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and the equivalents of the present invention are intended to be included within the scope of the present invention.

1. . . Paper take-up mechanism

10. . . Paper truss

11. . . First paper feed roller

12. . . Second paper feed roller

121. . . Axis

13. . . Swing gear arm

131. . . Swing gear

132. . . Bump

14. . . Swing gear lever

141. . . Eccentric shaft

142. . . Curved groove

1421. . . First end

1422. . . Second end

15. . . Force piece

151. . . End point

16. . . Upper cover

161. . . Annular tooth

17. . . Drive shaft

18. . . Paper truss cover

A. . . Non-pick point

B. . . Pick up point

F. . . elastic force

The first figure is a schematic view of the invention.

The first A diagram is an exploded view of the present invention.

2A to 2C are schematic views of the paper take-up truss of the paper take-up mechanism of the present invention being swung from a non-pick-out position to a pick-up position.

The third to third figures D are schematic views of the paper take-up truss of the paper take-up mechanism of the present invention being returned from the paper take-up position to the non-pick-out position.

The fourth A diagram and the fourth B diagram are schematic diagrams of the forward torque and the reverse moment applied to the paper truss of the present invention.

11. . . First paper feed roller

12. . . Second paper feed roller

121. . . Axis

131. . . Swing gear

132. . . Bump

141. . . Eccentric shaft

142. . . Curved groove

1421. . . First end

1422. . . Second end

15. . . Force piece

151. . . End point

16. . . Upper cover

161. . . Annular tooth

B. . . Pick up point

Claims (10)

A paper take-up mechanism comprising: a paper take-up gantry that swings between a paper take-up position and a non-pick-out position, and a first paper feed roller and a second paper feed roller; a rocking gear arm The second paper feed roller is interlocked, and the rocking gear arm is provided with a rocking gear; a rocking gear lever has one end connected to the rocking gear arm and the other end eccentrically connected with a force applying member; The second paper feed roller and the rocking gear arm are driven to rotate in a first direction by an external force, and the rocking gear on the rocking gear arm engages an annular tooth portion to drive the swing gear lever to rotate in an eccentric direction when rotating in the first direction The force applying member is configured to swing the paper take-up rig to the paper take-up position to make the first paper feed roller contact the paper; and when the second paper feed roller and the rocking gear arm are driven by an external force, Rotating in two directions, the rocking gear on the rocking gear arm meshes with the annular toothed portion to drive the rocking gear lever to rotate in the second direction, and eccentrically interlocks the force applying member to reset the picking device The non-movable to the pickup position, so that the first paper feed roller away. The paper picking mechanism of claim 1, wherein the rocking gear arm is provided with a convex block, and the rocking gear lever is provided with an arcuate groove corresponding to the convex block, wherein the curved groove has a first end And a second end, when the rocking gear on the rocking gear arm is engaged with the annular tooth portion in the first direction, the bump moves toward the second end of the arcuate groove and applies the second end a first direction driving force is formed; when the rocking gear on the rocking gear arm is engaged with the annular tooth portion in the second direction, the bump moves toward the first end of the arcuate groove and applies the force The first end is configured to form a driving force in the second direction. The paper picking mechanism of claim 2, wherein the force applying member is a spring. The paper take-up mechanism of claim 2, wherein the second paper feed roller is coupled to a drive shaft. The paper picking mechanism of claim 2, further comprising an upper cover disposed above the paper picking truss, and the annular toothed portion is disposed on an inner side surface of the upper cover. The paper picking mechanism of claim 2, further comprising a paper take-up hood cover assembled on the side of the paper picking truss, wherein the rocking gear lever is disposed on the paper picking hood. A paper picking method for a paper picking mechanism according to claim 1, comprising the steps of: maintaining the paper picking derrick in the non-picking position by a force applying member; and applying the external force to drive the second paper feeding The roller and the rocking gear arm rotate in a first direction, and when the rocking gear on the rocking gear arm engages the annular tooth portion to drive the rocking gear lever to rotate in the first direction, the force applying member is eccentrically linked by the force applying member Swinging the paper take-up truss from the non-pick-out position to the pick-up position, causing the first paper feed roller to contact the paper; and applying an external force to drive the second paper feed roller and the swing gear arm to rotate in a second direction, When the rocking gear on the rocking gear arm engages the annular tooth portion to drive the rocking gear lever to rotate in the second direction, the biasing member is coupled to the biasing member to be reset by the biasing member, and the picking device is used to The paper take-up position is swung to the non-pick-out position to move the first paper feed roller away from the paper. The method of picking up the paper according to claim 7, wherein the rocking gear arm is provided with a bump, and the rocking gear lever is provided with an arcuate groove corresponding to the convex block, the arcuate groove having a first end And a second end; in the step of driving the second paper feed roller and the rocking gear arm to rotate in a first direction, the bump of the rocking gear arm faces the second end of the arcuate groove The second end is moved and applied to form a first direction driving force. The paper picking method of claim 8, wherein in the step of driving the second paper feed roller and the rocking gear arm to rotate in a second direction, the bump of the rocking gear arm is directed toward The first end of the arcuate groove moves and applies the first end to form a second direction driving force. The paper taking method of claim 7, wherein the second paper feed roller and the rocking gear arm are rotated in a first direction and the external force is driven to drive the second paper feed roller and the rocking gear. In the step of rotating the arm toward the second direction, a motor is used to drive a driving shaft connected to the second paper feed roller to selectively drive the second paper feed roller and the rocking gear arm toward the first direction or Rotate in the second direction.