OFFSET DOCUMENT PICK-UP DEVICE
A flexural document pick-up device includes: a feeding path comprised of a upper wall and a lower wall; a input tray arranged upstream to the feeding path; a paper feeding unit arranged partially in the feeding path; a separation roller disposed on the opposite side of the paper feeding unit; a blocking arm disposed upstream to the paper feeding unit; a securing groove arranged on the upper wall; and a guiding unit with the following portions disposed sequentially from downstream to upstream of the feeding direction: a securing section which is secured to the securing groove, a flexure section which is extended from the securing section to the feeding path, a guiding section which is connected to the flexure section and essentially parallel to the feeding path, a lifting section which is connected to the guiding section and a vertex which is arranged on the end of the lifting section.
The present invention relates to a document pick-up device, in particular to a flexural document pick-up device which is able to avoid paper damage caused by paper warpage.
2. The Related ArtReferring to
However, the paper may be damaged due to the warpage of the paper during the separation process, the conditions that cause the warpage of the paper are shown in
In
In
In
Therefore, it is necessary to provide a flexural document pick-up device which is able to guide paper and avoid paper damage caused by paper warpage.
SUMMARY OF THE INVENTIONThe objective of the present invention is to provide a pick-up device, particular to a pick-up device which is able to avoid paper damage caused by paper warpage.
To achieve said objective, the flexural document pick-up device includes: a feeding path comprised of a upper wall and a lower wall; a input tray arranged at the upstream of the feeding path; a paper feeding unit arranged partially in the feeding path; a separation roller disposed on the opposite side of the paper feeding unit to be contacted with the paper feeding unit; a blocking arm disposed between the input tray and the paper feeding unit and configured to be switchable move between a blocking position for blocking the paper and a feeding position for passing the paper through the feeding path; a securing groove arranged on the upper wall; and a guiding unit with the following portions disposed sequentially from downstream to upstream of the paper feed direction: a securing section which is secured to the securing groove, a flexure section which is extended from the securing section to the feeding path, a guiding section which is connected to the flexure section and essentially parallel to the feeding path, a lifting section which is connected to the guiding section and a vertex which is arranged on the end of the lifting section; wherein the guiding section is movably arranged is a seam space formed with the paper feeding unit and the separation roller, the radius of a virtual circle formed by the separation roller and the lifting section is greater than the wheel diameter of the separation roller, and the vertical distance between the lower wall and the guiding section is greater than the vertical distance between the lower wall fed and the separation roller.
In a preferred embodiment, the junction point of the guiding section and the lifting section is arranged upstream to contact point of the separation roller and the paper.
In a preferred embodiment, the lifting section is arranged downstream to the blocking arm in the paper feed direction.
In a preferred embodiment, the angle between the guiding section and the feeding path is smaller than the angle between the lifting section and the feeding path when viewed from an axial direction of the separation roller.
In a preferred embodiment, the blocking arm is arranged upstream to the vertex.
In a preferred embodiment, the vertical distance between the paper to be fed and the vertex is greater than the vertical distance between the paper to be fed and the bottom of the blocking arm.
The present invention will be apparent to those skilled in the art by reading the following description, with reference to the attached drawings, in which:
In order to explain in detail, the technical content, structural features, objectives and effects of the present invention, the following is a detailed description with reference to the drawings.
Referring to
The blocking arm 40 is disposed to be movable in a direction perpendicular to the feeding path 12 for switching between a blocking position for blocking the paper and a feeding position for feeding the paper through the feeding path 12. The guiding unit 50 is movably connected in the feeding path 12, thereby guiding the paper to smoothly contact with the paper feeding unit 20.
Referring to
Referring to
Referring to
The lifting section 54 is disposed downstream to the blocking arm 40 in the paper feeding direction, the radius (DS1) of the virtual circle which is co-axis with the separation roller 30 and passes through the lifting section 54 is larger than the radius (DS) of the separation roller 30, and the lifting section 54 forms an angle θ 2 with the feeding path 12. The angle θ 2 is greater than the angle θ 1, so when the paper to be fed passes through the blocking arm 40 and comes in contact with the lifting section 54, more normal force is applied to the lifting section 54, thereby generates a force that pushes the guiding unit 50 away from the feeding path 12.
Referring
Claims
1. A flexural document pick-up device includes:
- a feeding path comprised of an upper wall and a lower wall;
- an input tray arranged at the upstream of the feeding path;
- a paper feeding unit arranged partially in the feeding path;
- a separation roller disposed on the opposite side of the paper feeding unit to be contacted with the paper feeding unit;
- a blocking arm disposed between the input tray and the paper feeding unit and configured to be switchable move between a blocking position for blocking the paper and a feeding position for passing the paper through the feeding path;
- a securing groove arranged on the upper wall; and
- a guiding unit with the following portions disposed sequentially from downstream to upstream of the feeding direction: a securing section which is secured to the securing groove, a flexure section which is extended from the securing section to the feeding path, a guiding section which is connected to the flexure section and essentially parallel to the feeding path, a lifting section which is connected to the guiding section and a vertex which is arranged on the end of the lifting section;
- wherein the guiding section is movably arranged is a seam space formed with the paper feeding unit and the separation roller, the radius of a virtual circle formed by the separation roller and the lifting section is greater than the wheel diameter of the separation roller, and the vertical distance between the lower wall and the guiding section is greater than the vertical distance between the lower wall and the separation roller.
2. The flexural document pick-up device as claimed in claim 1, wherein the junction point of the guiding section and the lifting section is arranged upstream to contact point of the separation roller and the paper.
3. The flexural document pick-up device as claimed in claim 1, wherein the lifting section is arranged downstream to the blocking arm in the paper feed direction.
4. The flexural document pick-up device as claimed in claim 1, wherein the angle between the guiding section and the feeding path is smaller than the angle between the lifting section and the feeding path when viewed from an axial direction of the separation roller.
5. The flexural document pick-up device as claimed in claim 1, wherein the blocking arm is arranged upstream to the vertex.
6. The flexural document pick-up device as claimed in claim 1, wherein the vertical distance between the paper to be fed and the vertex is greater than the vertical distance between the paper to be fed and the bottom of the blocking arm.
Type: Application
Filed: Mar 2, 2020
Publication Date: Sep 2, 2021
Inventors: Wei Pin Hsieh (New Taipei City), Kuan Cheng Huang (New Taipei City), Yung Kai Chen (New Taipei City)
Application Number: 16/806,177