Imaging device

Abstract

The utility model relates to an imaging device, comprising a machine body which is provided with a sheet inlet; the tray is used for bearing the sheets, the tray is located on the front side of the machine body and can extend in the front-back direction, and the tray is connected with the sheet inlet; the picking assembly comprises a bearing frame and a picking roller mounted on the bearing frame, and the bearing frame can move relative to the machine body, so that the picking roller is located at a storage position, a standby position and a feeding position; the first elastic piece acts on the supporting frame or the picking roller, so that the picking roller keeps the trend of moving from the storage position to the standby position; and the second elastic piece acts on the supporting frame or the picking roller, so that the picking roller keeps the trend of moving from the feeding position to the standby position. The position switching of the picking roller can be realized through a simple structure, the structure is simple, and the working reliability of the elastic piece is high.

Description

Technical Field

[0001] The utility model relates to the technical field of imaging equipment (such as printers and copiers), and in particular to an imaging equipment. Background Art

[0002] In an imaging device (such as a printer and a copier), a sheet stacking tray for stacking sheets and a feeding mechanism (also called a picking mechanism) for feeding the stacked sheets are provided. An image is formed on a sheet by feeding the sheets stacked on the sheet stacking tray to the imaging portion one by one at a predetermined time. The sheet feeding device generally has a pickup roller for picking up a sheet, a conveying roller for conveying the sheet picked up by the pickup roller, and a separation roller for separating a sheet from a plurality of sheets conveyed by the picking operation. In the above-mentioned sheet feeding device that feeds sheets from the sheet stacking tray, the sheet stacking tray protrudes from the side surface of the imaging device body. Therefore, the sheet stacking tray is generally attached to the device body in a manner that can be opened and closed relative to the device body. In the closed state of the sheet stacking tray, the device is configured so that the sheet stacking tray is substantially parallel to the side surface of the imaging device, or the sheet stacking tray is accommodated on the inner side of the outer surface of the imaging device.

[0003] As disclosed in the Chinese utility model patent "Sheet feeding device and imaging device" with patent number CN201710306370.1 (publication number CN107357151A), the sheet feeding device includes: a tray unit capable of stacking sheets in an open position; a feeding component for feeding sheets stacked on the tray unit; a feeding support portion that supports the feeding component so that the feeding component can move to a feeding position for feeding sheets stacked on the tray unit and a storage position for storage in the device body; and a pushing portion that pushes the feeding component toward the feeding position, wherein the feeding support portion includes an abutting portion that abuts against an area outside the sheet stacking area of the tray unit when the tray unit moves from the open position to the closed position, so as to be used for moving the feeding support portion and for moving the feeding component to the storage position.

[0004] The pickup roller is rotatably supported relative to the roller shaft, and the roller shaft is fixed to the roller holding portion. The roller holding portion is mounted so as to be rotatable relative to the feed portion about the rotation axis. The pickup roller is moved in a direction (in a direction) such that it abuts against the sheets on the sheet stacking tray by a compression spring (urging portion) formed by a helical torsion spring attached to the rotation axis. Figure 3 Push (as shown by arrow F in the middle).

[0005] Therefore, the pickup roller is movable to a feeding position for feeding the sheets stacked on the sheet stacking tray, and is movable to a standby position to be separated from the sheets by being rotated upward from the feeding position.

[0006] In this patent, the torsion spring only serves to press the pickup roller toward the feeding position. As for how the pickup roller moves from the feeding position to the standby position, the patent does not provide a detailed description, and it is unclear how this is achieved.

[0007] In addition, the tray arm on the tray abuts against the end abutments at both ends of the roller retaining portion to push the feeding component to the storage position when the tray is closed. The contact area between the tray arm and the end abutment portion is small, which can easily cause the roller retaining portion to deform, causing the position of the feeding component to change, and ultimately causing the pressure between the pickup roller and the sheet to change, which may cause the problem of double feeding of sheets. Utility Model Content

[0008] The technical problem to be solved by the utility model is to provide an imaging device capable of moving a pickup roller from a feeding position to a standby position in view of the current status of the prior art.

[0009] The technical solution adopted by the present invention to solve the above technical problems is: an imaging device comprising

[0010] a machine body, wherein the machine body is provided with a sheet material inlet;

[0011] A tray for carrying sheets, the tray being located at the front side of the machine body and being extendable in the front-to-back direction, and being connected to the sheet inlet;

[0012] A pickup assembly, comprising a support frame and a pickup roller mounted on the support frame, wherein the support frame is movable relative to the machine body so that the pickup roller is located in a storage position, a standby position, and a feeding position. Along the movable path of the pickup roller, the standby position of the pickup roller is between the storage position and the feeding position. When the pickup roller is in the storage position, the pickup assembly is entirely stored in the machine body. When the pickup roller is in the feeding position, the pickup roller is located above the tray, and the distance between the two is sufficient for the pickup roller to press against the sheet on the tray.

[0013] The first elastic member acts on the support frame or the pick-up roller to keep the pick-up roller moving from the storage position to the standby position;

[0014] The second elastic member acts on the support frame or the pick-up roller, so that the pick-up roller maintains a tendency to move from the feeding position to the standby position.

[0015] In order to enable the support frame to move relative to the machine body, a mounting shaft extending in the left and right directions is installed on the machine body. The mounting shaft can rotate around its axis. The support frame is fixedly mounted on the mounting shaft. When the mounting shaft rotates, it drives the support frame to rotate, thereby realizing the position switching of the pickup roller.

[0016] The first elastic member may be a telescopic spring, or may be a torsion spring sleeved on the mounting shaft, one torsion arm of the torsion spring is connected to or abuts the machine body, and the other torsion arm of the torsion spring is connected to or abuts the support frame.

[0017] The second elastic member can be a telescopic spring, or it can be a torsion spring sleeved on the mounting shaft, one torsion arm of the torsion spring is connected to or abuts the machine body, and the other torsion arm of the torsion spring is connected to or abuts the support frame.

[0018] In order to facilitate the storage of the entire pickup assembly in the machine body, the machine body is provided with a storage groove located above the sheet inlet. When the pickup roller is in the storage position, the entire pickup assembly is located in the storage groove.

[0019] Preferably, the tray is rotatably connected to the body via a connecting shaft extending in the left-right direction. The tray can be in a closed state extending vertically or an open state extending front-to-back. When not in use, the tray is closed to reduce the space occupied by the imaging device.

[0020] When the tray is vertically extended, the pickup roller is in the stowed position. When the tray is extended forward and backward, the pickup roller is in the feed position or standby position. To facilitate switching the pickup roller from the feed or standby position to the stowed position, the tray abuts against the pickup assembly during rotation from the open to the closed position, pushing the pickup roller to the stowed position. When the tray is opened, the pickup roller automatically switches from the stowed position to the standby position under the action of the first elastic member. When the tray is closed, the pickup roller switches from the standby position to the stowed position under the push of the tray.

[0021] Preferably, the tray comprises at least two sequentially connected tray units, each of which is rotatably connected via a rotating shaft extending in the left-right direction. When the tray is in the open state, the tray units are sequentially arranged in the front-to-back direction and extend in the front-to-back direction. When the tray is in the closed state, the tray units fold sequentially and extend vertically. By unfolding different numbers of tray units to accommodate sheets of different sizes, and when closed, the tray units fold sequentially, the overall size of the tray is small, occupying less space.

[0022] Preferably, each of the tray units is plate-shaped. After the tray is folded, the innermost tray unit can abut against the pickup roller in the standby position to push the pickup roller toward the storage position, and the contact area is large, which will not cause deformation of the components.

[0023] Preferably, when the tray is in a closed state, the tray and the body are connected via detachably connected buckle feet and buckle holes to position the tray.

[0024] Preferably, the front side of the body has a receiving area, and the tray in a closed state is located in the receiving area, so that the overall structure of the imaging device is compact and occupies little space.

[0025] Compared with the prior art, the advantages of the present invention are as follows: the present invention is not only provided with a first elastic member, which enables the pickup roller to move from the storage position to the standby position, but also provided with a second elastic member, which enables the pickup roller to move from the feeding position to the standby position. The pickup roller position can be switched through a simple structure, the structure is streamlined, and the elastic member has high working reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic structural diagram of an embodiment of the present utility model (the pickup roller is in the standby position and the tray is in the open state);

[0027] Figure 2 for Figure 1 A schematic diagram of the structure in another direction;

[0028] Figure 3 for Figure 1 A schematic diagram of the structure in another direction;

[0029] Figure 4 for Figure 1 A schematic diagram of the structure of the pickup component in FIG.

[0030] Figure 5 This is a schematic structural diagram of an embodiment of the present utility model (the pickup roller is in the feeding position and the tray is in the open state);

[0031] Figure 6 This is a schematic structural diagram of an embodiment of the present utility model (the pickup roller is in the storage position and the tray is in the closed state);

[0032] Figure 7 for Figure 6 Schematic diagram of the structure without the tray. DETAILED DESCRIPTION

[0033] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0034] like Figures 1 to 7 As shown, the imaging device of this preferred embodiment includes a body 1, a tray 2, a pickup assembly 3, a first elastic member 4 and a second elastic member 5. The imaging device can be a printer, a copier, etc., and is used to form an image on a sheet, and the sheet can be paper, etc.

[0035] A sheet inlet 11 is provided at the bottom of the body 1, and a tray 2 is used to carry sheets. The tray 2 is located at the front side of the body 1 and can extend in the front and rear directions. The tray 2 is connected to the sheet inlet 11 so that the sheets on the tray 2 can enter the sheet inlet 11 under the action of the picking component 3.

[0036] like Figure 4 As shown, the picking assembly 3 includes a mounting shaft 31, a support frame 32, and a picking roller 33 rotatably mounted on the support frame 32. The rotation axis of the picking roller 33 extends in the left and right directions. Of course, the picking assembly 3 does not only include these three components, but may also include other existing components, such as separation rollers, etc., which will not be described in detail here.

[0037] Mounting shaft 31 is mounted on body 1. Mounting shaft 31 extends leftward and rightward and is rotatable about its axis. Support frame 32 is fixedly mounted on mounting shaft 31. Rotation of mounting shaft 31 drives support frame 32 to rotate synchronously, positioning pickup roller 33 between a storage position, a standby position, and a feed position. Mounting shaft 31 can be driven to rotate by a drive mechanism, such as a motor. However, the drive mechanism can be non-self-locking, allowing mounting shaft 31 to rotate not only under the drive mechanism but also under the action of first elastic member 4 and second elastic member 5.

[0038] Along the moving path of the pickup roller 33, the standby position of the pickup roller 33 is between the storage position and the feeding position. Figure 1 The pickup roller 33 is in a standby position; Figure 6 、 7 As shown, when the pickup roller 33 is in the storage position, the pickup assembly 3 is stored in the body 1 as a whole. In this embodiment, the body 1 is provided with a storage groove 15 located above the sheet inlet 11. When the pickup roller 33 is in the storage position, the pickup assembly 3 is located in the storage groove 15 as a whole.

[0039] like Figure 5 As shown, when the pickup roller 33 is in the feeding position, the pickup roller 33 is located above the tray 2, and the distance between the two is sufficient for the pickup roller 33 to press against the sheet on the tray 2. At this time, if the pickup roller 33 rotates, the sheet will be conveyed into the sheet inlet 11.

[0040] like Figure 4 As shown, the first elastic member 4 acts on the support frame 32 or the pickup roller 33. If it acts directly on the pickup roller 33, it will affect the rotation of the pickup roller 33. Therefore, in this embodiment, the first elastic member 4 acts on the support frame 32, so that the pickup roller 33 maintains the tendency to move from the storage position to the standby position. Specifically, the first elastic member 4 is a torsion spring sleeved on the mounting shaft 31, one torsion arm of the torsion spring is connected to or abuts the body 1, and the other torsion arm of the torsion spring is connected to or abuts the support frame 32.

[0041] The second elastic member 5 acts on the support frame 32 or the pickup roller 33. If it acts directly on the pickup roller 33, it will affect the rotation of the pickup roller 33. Therefore, in this embodiment, the second elastic member 5 also acts on the support frame 32, so that the pickup roller 33 maintains the tendency to move from the feeding position to the standby position. Specifically, the second elastic member 5 is also a torsion spring mounted on the mounting shaft 31. One torsion arm of the torsion spring is connected to or abuts the machine body 1, and the other torsion arm of the torsion spring is connected to or abuts the support frame 32.

[0042] In this embodiment, the support frame 32 has an abutment block 321 and a pressing rod 322 . The abutment block 321 abuts against the torsion arm of the first elastic member 4 , and the pressing rod 322 abuts against the torsion arm of the second elastic member 5 .

[0043] When the imaging device is in use, tray 2 extends forward and backward. When the imaging device is not in use, tray 2 can be closed to reduce the space occupied by the imaging device. Therefore, tray 2 is rotatably connected to the body 1 via a connecting shaft extending in the left-right direction. Tray 2 can be in a closed position extending vertically or an open position extending forward and backward. The front side of the body 1 has a storage area 12, and the closed tray 2 is located in the storage area 12, making the overall structure of the imaging device compact and occupying a small space.

[0044] When the tray 2 is in a state of being vertically extended, the pickup roller 33 is in the storage position, and when the tray 2 is in a state of being extended frontward and rearward, the pickup roller 33 is in the feeding position or the standby position.

[0045] To facilitate the transition of the pickup roller 33 from the standby position to the storage position, the tray 2 abuts against the pickup assembly 3 during the rotation from the open to the closed position, pushing the pickup roller 33 to the storage position. When the tray 2 is opened, the pickup roller 33 automatically switches from the storage position to the standby position under the action of the first elastic member 4. When the tray 2 is closed, the pickup roller 33 switches from the standby position to the storage position under the push of the tray 2.

[0046] The tray 2 comprises at least two sequentially connected tray units 21. In this embodiment, there are three tray units 21. Adjacent tray units 21 are pivotally connected via a pivot axis extending in the left-right direction. One of the tray units 21 is pivotally connected to the body 1 via the pivot axis. When the tray 2 is open, the tray units 21 are arranged sequentially in the front-to-back direction and extend in this direction. When the tray 2 is closed, the tray units 21 fold up and extend vertically. By deploying different numbers of tray units 21 to accommodate sheets of varying sizes, and when closed, the tray units 21 fold up sequentially, making the tray 2 compact and space-saving.

[0047] Each tray unit 21 is plate-shaped. When the tray 2 is folded, the innermost tray unit 21 abuts against the pickup roller 33 in the standby position, pushing the pickup roller 33 toward the stowed position. This contact area is large and prevents component deformation. "Innermost" refers to the side closest to the pickup roller 33 after folding.

[0048] When the tray 2 is in the closed state, the tray 2 and the body 1 are connected by detachably connected buckle feet 22 and buckle holes 13 to position the tray 2. In this embodiment, the buckle hole 13 is provided in the receiving area 12 on the body 1, and the buckle foot 22 is provided on one of the tray units 21.

[0049] In addition, a groove 14 is provided on the top of the body 1 , and the groove and the tray 2 in the closed state form a hand-grip groove to facilitate pulling the tray 2 to rotate.

[0050] The working process of the imaging device of this embodiment is as follows:

[0051] (1) In the initial state, the tray 2 is in the closed state, the pickup roller 33 is in the storage position, and the first elastic member 4 is in the energy storage state;

[0052] (2) manually pulling the tray 2 to rotate to the open state. During the opening process of the tray 2, the support frame 32 rotates under the action of the first elastic member 4, so that the pickup roller 33 moves to the standby position;

[0053] (3) After receiving the print instruction, the mounting shaft 31 is driven to rotate by the driving mechanism, driving the support frame 32 to move, so that the pickup roller 33 moves to the feeding position, and the pickup roller 33 rotates to convey the sheet into the sheet inlet 11. At this time, the second elastic member 5 is in an energy storage state; when each sheet is fed or the print instruction is completed, the support frame 32 moves under the action of the second elastic member 5, so that the pickup roller 33 returns to the standby position.

[0054] In the above step (3), how the driving mechanism works under the printing instruction can adopt existing technology and will not be described in detail here. For example, the driving mechanism is electrically connected to the controller.

[0055] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Since the embodiments disclosed in the present invention can be set in different directions, these terms indicating directions are only for illustration and should not be regarded as limitations. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

Claims

1. An imaging device, characterized in that: include A machine body (1), wherein the machine body (1) is provided with a sheet material inlet (11); A tray (2) for carrying sheets, the tray (2) being located at the front side of the machine body (1) and being extendable in the front-to-back direction, the tray (2) being connected to the sheet inlet (11); A pick-up assembly (3), the pick-up assembly (3) comprising a support frame (32) and a pick-up roller (33) mounted on the support frame (32), the support frame (32) being movable relative to the machine body (1), so that the pick-up roller (33) is in a storage position, a standby position and a feeding position, along the movable path of the pick-up roller (33), the standby position of the pick-up roller (33) is between the storage position and the feeding position, when the pick-up roller (33) is in the storage position, the pick-up assembly (3) is stored in the machine body (1) as a whole, and when the pick-up roller (33) is in the feeding position, the pick-up roller (33) is located above the tray (2), and the distance between the two can satisfy the pick-up roller (33) pressing against the sheet on the tray (2); A first elastic member (4) acts on the support frame (32) or the pickup roller (33), so that the pickup roller (33) maintains a tendency to move from the storage position to the standby position; The second elastic member (5) acts on the support frame (32) or the pick-up roller (33), so that the pick-up roller (33) maintains a tendency to move from the feeding position to the standby position.

2. The imaging device according to claim 1, wherein: The pickup assembly (3) further comprises a mounting shaft (31) mounted on the machine body (1), wherein the mounting shaft (31) extends in the left-right direction and can rotate around its axis, and the support frame (32) is fixedly mounted on the mounting shaft (31).

3. The imaging device according to claim 2, wherein: The first elastic member (4) is a torsion spring sleeved on the mounting shaft (31), one torsion arm of the torsion spring is connected to or abuts against the machine body (1), and the other torsion arm of the torsion spring is connected to or abuts against the support frame (32).

4. The imaging device according to claim 2, wherein: The second elastic member (5) is also a torsion spring sleeved on the mounting shaft (31), one torsion arm of the torsion spring is connected to or abuts against the machine body (1), and the other torsion arm of the torsion spring is connected to or abuts against the support frame (32).

5. The imaging device according to claim 1, wherein: The machine body (1) is provided with a receiving groove (15) located above the sheet inlet (11); when the pickup roller (33) is in the receiving position, the pickup assembly (3) is entirely located in the receiving groove (15).

6. The imaging device according to any one of claims 1 to 5, characterized in that: The tray (2) is rotatably connected to the machine body (1) via a connecting shaft extending in the left-right direction, so that the tray (2) can be in a closed state extending vertically or an open state extending front-to-back. When the tray (2) is in the vertically extended state, the pickup roller (33) is in a storage position. When the tray (2) is in the front-to-back extended state, the pickup roller (33) is in a feeding position or a standby position. In the process of the tray (2) rotating from the open state to the closed state, the tray (2) and the pickup assembly (3) abut against each other, pushing the pickup roller (33) to move to the storage position.

7. The imaging device according to claim 6, wherein: The tray (2) comprises at least two tray units (21) connected in sequence, and two adjacent tray units (21) are rotatably connected via a rotating shaft extending in the left-right direction. When the tray (2) is in an open state, the tray units (21) are arranged in sequence in the front-to-back direction and extend in the front-to-back direction; when the tray (2) is in a closed state, the tray units (21) are folded in sequence and extend vertically.

8. The imaging device according to claim 7, wherein: Each of the tray units (21) is in a plate shape. After the tray (2) is folded, the innermost tray unit (21) can abut against a pickup roller (33) in a standby position.

9. The imaging device according to claim 6, wherein: When the tray (2) is in a closed state, the tray (2) and the machine body (1) are connected via detachably connected buckle feet (22) and buckle holes (13).

10. The imaging device according to claim 6, wherein: The front side of the machine body (1) has a receiving area (12), and the tray (2) in a closed state is located in the receiving area (12).

Images