Paper feeding device and image forming equipment

Abstract

The utility model discloses a paper feeding device and image forming equipment, and relates to the technical field of image forming. The paper feeding device comprises a paper feeding path, a paper feeding tray and a paper discharging roller, wherein the paper feeding path is used for guiding sheets; the paper feeding tray is used for containing sheets and can move in the first direction. The paper discharging roller is used for discharging the sheets from the paper feeding path and comprises a first paper discharging roller wheel and a second paper discharging roller wheel which abut against each other, the first paper discharging roller wheel is installed on the paper feeding tray, and when the paper feeding tray moves in the first direction, the first paper discharging roller wheel is separated from the second paper discharging roller wheel. The paper feeding tray moves in the first direction, so that the first paper discharging roller and the second paper discharging roller are separated, and a user can easily take out a paperboard; meanwhile, along with the movement of the paper feeding tray, a larger space of the paper discharging tray or the paper discharging bearing area can be exposed, a user can determine the position of the paper jam and take out the paper jam more conveniently, and the sheet is prevented from being damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of image forming, in particular to a paper feeding device and image forming equipment. Background Art

[0002] Currently, image forming devices such as printers and copiers are equipped with automatic document feeders (ADFs). Users can place sheets of paper or other materials on the feed tray of the automatic document feeder, and the image forming device can automatically feed paper to complete operations such as printing / copying / scanning.

[0003] During the automatic paper feeding process of the ADF device, the paper picking module picks up paper from the paper feed tray, and the paper enters the paper feeding path of the ADF device. The paper moves through the conveying rollers of the paper feeding path, reaches the paper discharge roller, and is finally moved away from the paper feeding path by the paper discharge roller and falls on the paper discharge tray or a specific paper discharge receiving area. During the entire paper feeding process, paper jams may occur.

[0004] In the prior art, if the paper jam is located upstream of the paper feeding path (according to the paper feeding path, the first part passed is defined as the upstream, and the later part passed is defined as the downstream), the user can open the upper cover of the ADF device. After opening the upper cover of the ADF device, the paper jam is exposed, and the user removes the paper jam from the upper part; however, when the paper jam is located at the paper discharge roller pair downstream of the paper feeding path, since the paper discharge roller pair maintains a tightly abutted state, the user can only forcibly pull out the paper jam at the paper discharge tray or paper discharge receiving area, which is not only laborious but also easy to damage the paper. Utility Model Content

[0005] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a paper feeding device and an image forming device, which are used to enable the user to release the abutment state of the paper discharge roller pair when a paper jam occurs downstream of the ADF device, thereby facilitating the user to remove the jammed paper and avoiding damage to the sheet.

[0006] According to a first aspect of the utility model, there is provided a paper feeding device, comprising:

[0007] A paper feeding path, the paper feeding path is used to guide the sheet;

[0008] A paper feed tray, the paper feed tray is used to place the sheet, and the paper feed tray can move along a first direction;

[0009] A paper discharge roller is used to discharge the sheet from the paper feeding path, and the paper discharge roller includes a first paper discharge roller and a second paper discharge roller abutting against each other, the first paper discharge roller is installed on the paper feed tray, and when the paper feed tray moves along a first direction, the first paper discharge roller is separated from the second paper discharge roller.

[0010] The paper feeding device of the utility model arranges the first paper discharge roller wheel in the paper discharge roller at the paper feed tray. When a paper jam occurs at the paper discharge roller wheel, the paper feed tray moves along a first direction. The first paper discharge roller wheel moves away from the second paper discharge roller wheel as the paper feed tray moves, thereby separating the first paper discharge roller wheel from the second paper discharge roller wheel, and a user can easily remove the jammed paper. At the same time, as the paper feed tray moves, a larger space of the paper discharge tray or the paper discharge receiving area can be exposed, making it more convenient for the user to determine the location of the jammed paper and remove the jammed paper, and avoiding damage to the sheet material.

[0011] In some implementations, the paper feed tray is provided with a roller mounting portion, and the roller mounting portion is used to mount the first paper discharge roller.

[0012] In some embodiments, the roller mounting portion includes a mounting frame, and the first paper ejection roller has a mounting shaft, and the mounting shaft cooperates with the mounting frame so that the first paper ejection roller is mounted on the roller mounting portion.

[0013] In some embodiments, the mounting frame includes a protrusion, and the shaft end of the mounting shaft has a mounting hole; or the mounting frame includes a mounting hole, and the shaft end of the mounting shaft has a protrusion, and the mounting hole cooperates with the protrusion so that the mounting shaft is mounted on the mounting frame; and / or

[0014] The mounting frame includes a plurality of limit blocks, and the plurality of limit blocks are used to limit the mounting shaft so that the mounting shaft can be mounted on the mounting frame.

[0015] In some embodiments, the roller mounting portion includes a groove, and the first paper ejection roller is at least partially located in the groove.

[0016] In some embodiments, the mounting shaft is a spring shaft.

[0017] In some embodiments, the first paper ejection roller is a driven roller, and the second paper ejection roller is a driving roller.

[0018] In some embodiments, the paper feed tray is provided with a rotatable mounting portion, and the rotatable mounting portion is rotatably connected to the paper feed device, so that the paper feed tray can move along a first direction.

[0019] In some embodiments, the paper feed tray is provided with an abutment portion, the paper feed device includes a body, the paper feeding path is provided in the body, and the abutment portion abuts against the body when the first paper discharge roller and the second paper discharge roller abut against each other.

[0020] According to a second aspect of the present invention, an image forming device is provided, the image forming device comprising the above-mentioned paper feeding device.

[0021] Compared with the prior art, the paper feeding device and image forming equipment of the present invention, by setting the first paper discharge roller in the paper discharge roller at the paper feed tray, when a paper jam occurs at the paper discharge roller, the paper feed tray is moved along a first direction, and the first paper discharge roller moves away from the second paper discharge roller as the paper feed tray moves, thereby separating the first paper discharge roller from the second paper discharge roller, and a user can easily remove the jammed paper; at the same time, as the paper feed tray moves, a larger space of the paper discharge tray or the paper discharge receiving area can be exposed, making it more convenient for the user to determine the location of the jammed paper and remove the jammed paper, and avoiding damage to the sheet. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of an image forming device according to one embodiment of the utility model;

[0023] Figure 2 This is a schematic diagram of the overall structure of a paper feeding device according to an embodiment of the present utility model;

[0024] Figure 3 It is a schematic diagram of a top view of the structure of a paper feeding device according to one embodiment of the utility model;

[0025] Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure corresponding to the mid-section line (AA);

[0026] Figure 5 It is a schematic cross-sectional structure diagram corresponding to the same cutting line (AA) of a paper feeding device according to another embodiment of the present invention;

[0027] Figure 6 for Figure 5 The cross-sectional structural diagram of the paper feeding device shown is a schematic cross-sectional structural diagram from another perspective.

[0028] Figure 7 for Figure 5 The cross-sectional structural diagram of the paper feeding device shown is a schematic cross-sectional structural diagram of the lifted paper feeding tray.

[0029] Figure 8 for Figure 7 A schematic cross-sectional structural diagram of the paper feeding device shown in another perspective;

[0030] Fig. 9 It is a structural schematic diagram of a paper feed tray according to another embodiment of the utility model;

[0031] Fig.10 for Fig. 9 Schematic diagram of the enlarged structure of part A.

[0032] Explanation of the accompanying figures: device body 10, paper feeding device 20, main body 200, paper path 210, upper cover 220, paper feeding tray 230, front side 230a, rear side 230b, upper side 230c, lower side 230d, left side 230e, right side 230f, rotating mounting portion 231, rotating hole 232, roller mounting portion 233, groove 234, mounting frame 235, protrusion 236, limit block 237, first limit block 237a, second limit block 237b, third limit block 237c, abutment portion 238, paper picking device 240, conveying roller 250, paper discharge roller 260, first paper discharge roller 261, mounting shaft 261a, mounting hole 261b, second paper discharge roller 262, paper discharge tray 270. DETAILED DESCRIPTION

[0033] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0034] The present application provides an image forming device for performing image forming tasks such as scanning, generating, printing, receiving and sending image data, and examples of the image forming device include a printer with a scanning function, a copier, a fax machine, and a multi-function peripheral (MFP) that performs the above functions in a single device. Figure 1 and Figure 2 As shown, the image forming device includes a device body 10 and a paper feeding device 20. The paper feeding device 20 is an automatic document feeder (ADF). The paper feeding device 20 is arranged on the upper part of the device body 10 of the image forming device and is electrically connected to the device body 10. The user can place sheets of paper, film, cards, etc. on the paper feeding tray 230 of the paper feeding device 20. The image forming device can realize automatic paper feeding with the help of the paper feeding device 20, so that the image forming device can complete operations such as printing / copying / scanning.

[0035] In a possible implementation, the present application provides a paper feeding device 20, such as Figure 1-Figure 4 As shown, the paper feeding device 20 includes a body 200, a paper feeding path 210, an upper cover 220, a paper feeding tray 230, a paper pickup device 240, a conveying roller 250, a paper discharge roller 260 and a paper discharge tray 270. The body 200 of the paper feeding device 20 has a paper feeding path 210 (i.e., Figure 4The paper path 210 is used to guide the sheets. The end of the upper cover 220 away from the paper feed tray 230 is installed on the body 200 of the paper feed device 20 through a rotating shaft, so that the upper cover 220 can rotate around the rotating shaft. The upper cover 220 is used to cover the paper path 210 to protect the paper path 210. The paper feed tray 230 is used to place the sheets to be processed. The paper pick-up device 240 is used to move the sheets on the paper feed tray 230 to the paper path 210. There are multiple conveying rollers 250, and the conveying rollers 250 are used to drive the sheets to move along the paper path 210. The paper discharge rollers 260 are used to move the sheets and discharge them from the paper path 210. The paper discharge tray 270 is used to receive the sheets discharged from the paper path 210 after being moved by the paper discharge rollers 260.

[0036] like Figure 4 As shown, each conveying roller 250 and paper discharge roller 260 includes a driving wheel and a driven wheel. The driving wheel is mounted on a driving shaft, and the driving shaft is connected to a power source (such as a motor) to receive a driving force. The driven wheel is mounted on its mounting shaft and can rotate around the axis. The driven wheel and the driving wheel are in abutment state by default. When the paper picking device 240 moves the sheet from the paper feed tray 230 to the paper feeding path 210, the sheet passes between the driving wheel of the conveying roller 250 and the driven wheel of the conveying roller 250 and can be moved by the conveying roller 250. When the sheet passes through the conveying roller 250 and reaches the paper discharge roller 260, the sheet passes between the driving wheel of the paper discharge roller 260 and the driven wheel of the paper discharge roller 260 and can be moved by the paper discharge roller 260, and then the sheet is discharged to the paper discharge tray 270. (Take single-sided scanning as an example, the entire paper feeding process is shown in Figure 4 The path indicated by the red arrow in the figure).

[0037] like Figure 4 As shown, during the paper feeding process of the paper feeding device 20, a paper jam may occur in the paper feeding path. At this time, the paper feeding device 20 will suspend the paper feeding and resume the paper feeding after the user removes the jammed paper. The portion of the paper feeding path 210 close to the paper picking device 240 is regarded as the upstream of the paper feeding path 210, and the portion of the paper feeding path 210 close to the paper ejection roller 260 is regarded as the downstream of the paper feeding path 210. When the paper jam is located in the upstream of the paper feeding path 210, the user can open the upper cover 220 of the paper feeding device 20, even if the upper cover 220 rotates around the rotation axis rotatably connected to the body 200 of the paper feeding device 20, at this time, the portion of the paper feeding path 210 close to the paper picking device 240 is exposed, and the user can remove the jammed paper. However, when the paper jam is located downstream of the paper feeding path 210, since the driving wheel of the paper discharge roller 260 and the driven wheel of the paper discharge roller 260 are still in contact, the user can only pull out the paper jam at the paper discharge tray 270, which is not only difficult to observe, but also laborious and easy to damage the paper.

[0038] In this regard, in a possible implementation, the present application provides a paper feeding device 20, such as Figure 5-Figure 10 As shown, when a paper jam occurs downstream of the paper feeding device 20, the user can release the contact state of the paper discharge roller pair, which is convenient for the user to remove the jammed paper and avoids damaging the sheet. The differences between the paper feeding device 20 in this embodiment and the paper feeding device 20 in the above embodiment will be described below. For the similarities between the paper feeding device 20 in this embodiment and the paper feeding device 20 in the above embodiment, reference can be made to the paper feeding device 20 in the above embodiment.

[0039] like Figure 5-Figure 8 As shown, the paper feed tray 230 can move in a first direction; the paper discharge roller 260 includes a first paper discharge roller 261 and a second paper discharge roller 262 that abut against each other, the first paper discharge roller 261 is installed on the paper feed tray 230, and when the paper feed tray 230 moves in the first direction, the first paper discharge roller 261 is separated from the second paper discharge roller 262. By arranging the first paper discharge roller 261 in the paper discharge roller 260 at the paper feed tray 230, when a paper jam occurs at the paper discharge roller 260, the paper feed tray 230 moves in the first direction, and the first paper discharge roller 261 moves away from the second paper discharge roller 262 as the paper feed tray 230 moves, so that the first paper discharge roller 261 is separated from the second paper discharge roller 262 (as shown in FIG. Figure 7 and Figure 8 As shown in the figure, the user can easily remove the jammed paper; at the same time, as the paper feed tray 230 moves, a larger space of the paper discharge tray 270 or the paper discharge receiving area can be exposed, which makes it easier for the user to determine the jammed paper location and remove the jammed paper, and avoids damaging the sheet. In addition, the paper feed tray 230 can also move in a second direction opposite to the first direction. After the user removes the jammed paper, the paper feed tray 230 moves in the second direction opposite to the first direction to reset the paper feed tray 230, so that the first paper discharge roller 261 and the second paper discharge roller 262 resume the contact state.

[0040] The first paper ejection roller 261 is a driven wheel, and the second paper ejection roller 262 is a driving wheel. Since the driving wheel is connected to a power source (such as a motor) through its own driving shaft to receive driving force, and the driven wheel is installed on its own mounting shaft and can rotate around the axis, the driving wheel has an additional part connected to the power source (such as a motor) compared to the driven wheel, and has a more complicated structure. The second paper ejection roller 262 as a driving wheel is not easy to change, so the first paper ejection roller 261 with a relatively simple structure and serving as a driven wheel is installed on the paper feed tray 230.

[0041] like Fig. 9As shown, the paper feed tray 230 has a front side 230a, a rear side 230b, an upper side 230c, a lower side 230d, a left side 230e and a right side 230f. The front side 230 and the rear side 230b of the paper feed tray 230 are opposite to each other, the upper side 230c and the lower side 230d of the paper feed tray 230 are opposite to each other, and the left side 230e and the right side 230f of the paper feed tray 230 are opposite to each other. The left side 230e of the paper feed tray 230 is roughly Z-shaped. The upper side 230c of the paper feed tray 230 is used to place sheets, the lower side 230d of the paper feed tray 230 faces the paper discharge tray 270, and the front side 230a of the paper feed tray 230 is closer to the paper feed path 210 than the rear side 230b, that is, the sheets placed on the upper side 230c of the paper feed tray 230 enter the paper feed path 210 through the intersection of the front side 230a and the upper side 230c, and the paper feed tray 230 is provided with a rotating mounting portion 231. The rotatable mounting portion 231 is rotatably connected to the paper feeding device 230. Specifically, two rotatable mounting portions 231 can be provided, wherein one rotatable mounting portion 231 is located at the intersection of the front side 230a, the upper side 230c and the left side 230e of the paper feeding tray 230, and the other rotatable mounting portion 231 is located at the intersection of the front side 230a, the upper side 230c and the right side 230f. The rotatable mounting portion 231 has a rotatable hole 232, which is roughly cylindrical. The axis of the rotatable hole 232 is parallel to the front side 230a of the paper feeding tray 230. Correspondingly, the body 200 of the paper feeding device 20 is provided with a mounting shaft (not shown) that matches the rotatable hole 232. Thus, the paper feeding tray 230 can rotate around the mounting shaft of the body 200 of the paper feeding device 20 through the matching relationship between the rotatable hole 232 on the rotatable mounting portion 231 and the mounting shaft on the body 200 of the paper feeding device 20. Correspondingly, as Figure 7 As shown, when the paper feed tray 230 moves counterclockwise (i.e., in the first direction) around the mounting axis of the body 200 of the paper feed device 20, the first paper discharge roller 261 separates from the second paper discharge roller 262 as the paper feed tray 230 moves. On the contrary, when the paper feed tray 230 moves clockwise (i.e., in the second direction) around the mounting axis of the body 200 of the paper feed device 20, the first paper discharge roller 261 resumes the contact state with the second paper discharge roller 262 as the paper feed tray 230 moves. Of course, the moving mode of the paper feed tray 230 is not limited to the rotation mode, but can also be the push-pull mode, that is, the paper feed tray 230 is connected to the body 200 of the paper feed device 20 through the push-pull structure, and the paper discharge tray 270 drives the first paper discharge roller 261 to separate from or resume the contact state with the second paper discharge roller 262 through the push-pull structure.

[0042] like Fig.10As shown, the paper feed tray 230 is provided with a roller mounting portion 233, and the roller mounting portion 233 is used to mount the first paper ejection roller 261. Specifically, the roller mounting portion 233 includes a groove 234 and a mounting frame 235. The first paper ejection roller 261 has a mounting shaft 261a. The first paper ejection roller 261 is mounted on its own mounting shaft 261a and can rotate around the axis. The groove 234 runs through the front side 230a and the lower side 230d of the paper feed tray 230. The mounting frame 235 is located in the groove 234. The mounting shaft 261a cooperates with the mounting frame 235 to install the first paper ejection roller 261 on the roller mounting portion 233. When the first paper ejection roller 261 is installed, the first paper ejection roller 261 is at least partially located in the groove 234 to protect the first paper ejection roller 261.

[0043] The mounting shaft 261a of the first paper ejection roller 261 is a spring shaft. The first paper ejection roller 261 is mounted on the paper feed tray 230 through the spring shaft and the mounting frame 235 of the roller mounting portion 233. When the first paper ejection roller 261 and the second paper ejection roller 262 are in contact, the spring shaft can provide a positive pressure of paper feed friction for the sheet during the paper feeding process.

[0044] The mounting frame 235 includes a protrusion 236, which is parallel to the front side 230a of the paper feed tray 230. The axial end of the mounting shaft 261a of the first paper discharge roller 261 has a mounting hole 261b. The axis center of the mounting hole 261b coincides with the axis center of the mounting shaft 261a. The axis center of the mounting hole 261b is parallel to the front side 230a of the paper feed tray 230. The mounting hole 261b cooperates with the protrusion 236 to enable the mounting shaft 261a to be installed on the mounting frame 235. Of course, the installation shaft 261a can be installed on the installation frame 235 by providing a mounting hole on the installation frame 235, the axis of the mounting hole is parallel to the front side 230a of the paper feed tray 230, and a protrusion is provided on the shaft end of the installation shaft 261a, the protrusion is respectively parallel to the axis of the installation shaft 261a and the front side 230a of the paper feed tray 230, and the installation shaft 261a can be installed on the installation frame 235 by using the protrusion on the shaft end of the installation shaft 261a to cooperate with the mounting hole on the installation frame 235. In addition, the above two installation methods can also be combined to install the installation shaft 261a on the installation frame 235.

[0045] The mounting frame 235 further includes a plurality of limit blocks 237, which are used to limit the mounting shaft 261a so that the mounting shaft 261a of the first paper ejection roller 261 is installed on the mounting frame 235. In addition, the plurality of limit blocks 237 can also prevent the mounting shaft 261a of the first paper ejection roller 261 from detaching from the mounting frame 235. Specifically, the plurality of limit blocks 237 include a plurality of first limit blocks 237a, a second limit block 237b and a third limit block 237c. The limiting block 237a is parallel to the front side 230a of the paper feed tray 230. The first limiting block 237a is used to limit the installation shaft 261a of the first paper discharge roller 261 in the direction of the front side 230a to prevent the installation shaft 261a of the first paper discharge roller 261 from moving upward toward the front side 230a of the paper feed tray 230. The second limiting block 237b is parallel to the front side 230a of the paper feed tray 230. Compared with the first limiting block 23 The second limiting block 237a is used to limit the mounting shaft 261a of the first paper ejection roller 261 in the direction of the rear side 230b to prevent the mounting shaft 261a of the first paper ejection roller 261 from moving upward in the direction of the rear side 230b of the paper feed tray 230. The third limiting block 237c is located at the end of the second limiting block 237b. The third limiting block 237c points to and is perpendicular to the front side 230a of the paper feed tray 230. The third limit block 237c is used to limit the installation shaft 261a of the first paper ejection roller 261 in the direction of the lower side surface 230d. In addition, the third limit block 237c can also be elastic, that is, the third limit block 237c can be bent to release the limitation of the installation shaft 261a of the first paper ejection roller 261 by the third limit block 237c, and the installation shaft 261a of the first paper ejection roller 261 can be removed from the mounting frame 235 to realize the replacement of the first paper ejection roller 261.

[0046] like Fig.10 As shown, the paper feed tray 230 is provided with an abutment portion 238. Specifically, the abutment portion 238 can be the front side surface 230a of the paper feed tray 230. In addition, the abutment portion 238 can also be the side surface of the first limit block 237a that is flush with the front side surface 230a. The abutment portion 238 abuts against the body 200 of the paper feeding device 20 when the first paper discharge roller 261 and the second paper discharge roller 262 abut against each other, thereby preventing the first paper discharge roller 261 from further squeezing the second paper discharge roller 262 and affecting the paper discharge function of the paper discharge roller 260.

[0047] The working principle of the paper feeding device 20 of this embodiment is as follows:

[0048] When paper jam occurs at the paper discharge roller 260, in order to make the paper feed tray 230 rotate within a wider range, the user can first open the upper cover 220 of the paper feed device 20, and then lift the paper feed tray 230. At this time, the paper feed tray 230 rotates along its installation axis, and the first paper discharge roller 261 of the paper discharge roller 260 disengages from the second paper discharge roller 262 as the paper feed tray 230 moves, thereby releasing the contact state of the paper discharge roller (such as Figure 7 and Figure 8 As shown in the figure, the user does not need to work hard to remove the jammed paper, and the paper will not be damaged. At the same time, since the paper feed tray 230 is lifted, the space between the paper discharge tray 270 and the paper feed tray 230 is larger, which is convenient for the user to determine the specific location of the jammed paper and remove the jammed paper.

[0049] After the jammed paper at the paper ejection roller 260 is removed, the user swings the paper feed tray 230 downward. At this time, the first paper ejection roller wheel 261 of the paper ejection roller 260 moves with the paper feed tray 230. When the paper feed tray 230 swings downward to the limit position (the abutment portion 238 abuts against the body 200 of the paper feed device 20 when reaching the limit position), the first paper ejection roller wheel 261 of the paper ejection roller 260 and the second paper ejection roller wheel 262 of the paper ejection roller 260 resume the abutment state, thereby achieving reset (such as Figure 5 and Figure 6 shown).

[0050] The above are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A paper feeding device, characterized in that: include: A paper feeding path, the paper feeding path is used to guide the sheet; A paper feed tray, the paper feed tray is used to place the sheet, and the paper feed tray can move along a first direction; A paper discharge roller is used to discharge the sheet from the paper feeding path, and the paper discharge roller includes a first paper discharge roller and a second paper discharge roller abutting against each other, the first paper discharge roller is installed on the paper feed tray, and when the paper feed tray moves along a first direction, the first paper discharge roller is separated from the second paper discharge roller.

2. The paper feeding device according to claim 1, characterized in that: The paper feed tray is provided with a roller mounting portion, and the roller mounting portion is used to mount the first paper discharge roller.

3. The paper feeding device according to claim 2, characterized in that: The roller mounting portion includes a mounting frame, and the first paper ejection roller has a mounting shaft, and the mounting shaft cooperates with the mounting frame so that the first paper ejection roller is mounted on the roller mounting portion.

4. The paper feeding device according to claim 3, characterized in that: The mounting frame includes a protrusion, and the shaft end of the mounting shaft has a mounting hole; or the mounting frame includes a mounting hole, and the shaft end of the mounting shaft has a protrusion, and the mounting hole cooperates with the protrusion, so that the mounting shaft is mounted on the mounting frame; and / or The mounting frame includes a plurality of limit blocks, and the plurality of limit blocks are used to limit the mounting shaft so that the mounting shaft can be mounted on the mounting frame.

5. The paper feeding device according to any one of claims 2 to 4, characterized in that: The roller mounting portion comprises a groove, and the first paper discharge roller is at least partially located in the groove.

6. The paper feeding device according to any one of claims 3 to 4, characterized in that: The installation shaft is a spring shaft.

7. The paper feeding device according to any one of claims 1 to 4, characterized in that: The first paper discharge roller is a driven wheel, and the second paper discharge roller is a driving wheel.

8. The paper feeding device according to any one of claims 1 to 4, characterized in that: The paper feed tray is provided with a rotatable mounting portion, and the rotatable mounting portion is rotatably connected to the paper feed device, so that the paper feed tray can move along a first direction.

9. The paper feeding device according to any one of claims 1 to 4, characterized in that: The paper feed tray is provided with a contact portion, the paper feed device includes a body, the paper feeding path is provided on the body, and the contact portion contacts the body when the first paper discharge roller and the second paper discharge roller contact each other.

10. An image forming device, characterized in that: A paper feeding device comprising any one of claims 1 to 9.

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