Printer paper feeder

Abstract

The utility model discloses a paper feeder of a printer, which belongs to the technical field of printers and comprises a base, a paper placing structure, a plurality of stop blocks, a leading-in wheel set, a paper rubbing wheel set, an alternate paper shifting wheel set and a paper shifting power mechanism. The paper placing structure is arranged on one side face of the base, and the multiple stopping blocks are evenly arranged on the other side face of the base relative to the paper placing structure. The end, adjacent to the paper placing structure, of the leading-in wheel set is arranged on the base, and the paper rubbing wheel set is arranged on the base and adjacent to the leading-in wheel set. The alternate paper shifting wheel set is movably arranged above the paper rubbing wheel set, the paper shifting power mechanism is in driving connection with the alternate paper shifting wheel set, and the paper shifting mechanism is connected with the base. According to the printer paper feeder, paper can be alternately fed during continuous printing, and redundant paper is prevented from being sent out; therefore, the technical problem of how to improve the paper feeding stability of the paper feeder during continuous printing is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of printers, in particular to a paper feeder for a printer. Background Art

[0002] A printer is a computer output device. Its main function is to print the results or intermediate results of computer processing on paper in the form of numbers, letters, symbols, graphics, etc. that can be recognized by humans in a prescribed format.

[0003] The printer feeder is an important part of the printer. It is mainly responsible for feeding paper from the paper box or paper feed tray into the printer's paper path for printing. When the printer receives a print job, the feeder starts working, rubbing the paper through the pickup roller and feeding it into the paper path.

[0004] Based on this, Chinese patent CN221022948U discloses an automatic paper feeder for a printer, which includes a frame and a paper placing mechanism, an alignment limit mechanism and a paper feeding mechanism installed on the frame. The paper placing mechanism is composed of a first electric push rod and a placing plate. The alignment limit mechanism is arranged at one side of the bottom of the paper placing mechanism. The paper feeding mechanism is located at one side of the alignment limit mechanism. An auxiliary transmission mechanism is arranged between the paper feeding mechanism and the alignment limit mechanism. The automatic paper feeder for a printer can adjust the inclination of the placing plate according to the number of papers through the first electric push rod and the placing plate consisting of a bottom plate and a side plate, so as to facilitate the subsequent paper to enter the printer, thereby achieving the purpose of being easy to use. By arranging an anti-skid groove and a rough layer on the surface of the pickup roller and installing an abutment spring, the friction between the pickup roller and the paper can be increased, greatly reducing the slippage of the pickup roller.

[0005] However, the automatic paper feeder of the printer disclosed above still has the technical problem that it cannot output paper continuously or it is difficult to control the amount of paper output each time when outputting paper continuously. Specifically, the working principle of the automatic paper feeder disclosed in the existing patent is: after the paper passes through the alignment limit mechanism, it first passes through the transmission roller so that the paper can enter the paper feeding mechanism conveniently; when feeding paper, the transmission motor drives the rotating shaft to rotate, and the rotating shaft drives the pickup wheel to rotate, so that the paper abutting against one side of the pickup wheel follows the rotation of the pickup wheel; and under the action of the rough layer and the anti-skid groove on the pickup wheel, it can enter the printer more easily. In addition, under the action of the abutment spring, the pickup wheel can press the paper, further increasing the friction between the paper and the pickup wheel to prevent the pickup wheel from slipping. However, in this paper feeding scheme, because different types of paper have different thicknesses, different thicknesses of paper will receive different friction when entering the working area of ​​the pickup wheel provided therein, so that when feeding paper continuously and quickly, multiple sheets of paper will be fed in at one time, affecting the efficiency of continuous printing. Utility Model Content

[0006] Based on this, it is necessary to provide a printer feeder to address the technical problem of how to improve the paper feeding stability of the feeder during continuous printing.

[0007] A printer paper feeder comprises: a base, a paper placing structure, a plurality of blocking blocks, an introduction wheel group, a paper picking wheel group, an alternate paper picking wheel group and a paper picking power mechanism; the paper placing structure is arranged on one side of the base, and a plurality of blocking blocks are arranged evenly on the other side of the base relative to the paper placing structure; the introduction wheel group is arranged on the base adjacent to the end of the paper placing structure, and the paper picking wheel group is arranged on the base adjacent to the introduction wheel group; the alternate paper picking wheel group is movably arranged above the paper picking wheel group, and the paper picking power mechanism is drivingly connected to the alternate paper picking wheel group, and the paper picking power mechanism is connected to the base.

[0008] Furthermore, the base is provided with a seat frame and a reference frame, the reference frame is arranged on the seat frame, and two side surfaces of the reference frame are respectively connected to the paper placing structure and a plurality of the blocking blocks.

[0009] Furthermore, each of the blocking blocks has a fastener, a blocking seat and an L-shaped clamping portion; the fasteners respectively connect the blocking seat and the seat frame, the L-shaped clamping portion is connected to the blocking seat, and the L-shaped clamping portion is connected to the side of the reference frame.

[0010] Furthermore, the introduction wheel group has an introduction wheel axle and a plurality of introduction wheel structures; the introduction wheel axle is connected to the reference frame, a plurality of the introduction wheel structures are evenly spaced and arranged on the introduction wheel axle, and the introduction wheel structure is movably connected to the reference frame.

[0011] Furthermore, the pickup wheel assembly comprises a pickup wheel shaft, a plurality of pickup wheel structures and a pickup wheel reduction gear assembly.

[0012] Furthermore, the pickup wheel shaft is adjacent to the introduction wheel shaft and is arranged on the reference frame, a plurality of pickup wheel structures are evenly spaced on the pickup wheel shaft, and the pickup wheel structure is movably connected to the reference frame; the pickup wheel reduction gear group is connected to one end of the pickup wheel shaft, and the pickup wheel reduction gear group is movably connected to the seat frame.

[0013] Furthermore, the alternating paper paddle wheel group comprises a paper paddle wheel power shaft, a plurality of rotating drum structures, a plurality of paddle wheel shafts and a plurality of paddle wheel structures; a plurality of rotating drum structures are evenly arranged on the paper paddle wheel power shaft, a paddle wheel shaft is correspondingly arranged in each of the rotating drum structures, and each of the paddle wheel structures is correspondingly movably connected to a paddle wheel shaft.

[0014] Furthermore, the paper-moving power mechanism comprises a power machine, a power connecting frame, an input power reduction gear and a coupling.

[0015] Furthermore, the power machine is connected to the side of the power connecting frame, and the power connecting frame is arranged on the seat frame.

[0016] Furthermore, the input power reduction gear is movably arranged in the power connecting frame, the power machine is drivingly connected to the input power reduction gear; the coupling is respectively connected to the input power reduction gear and the paper paddle wheel power shaft.

[0017] In summary, the paper feeder of the printer of the utility model is respectively provided with a base, a paper placing structure, a plurality of blocking blocks, an introduction wheel group, a paper picking wheel group, an alternating paper picking wheel group and a paper picking power mechanism; the paper placing structure is arranged on one side of the base, and a plurality of blocking blocks are evenly arranged on the other side of the base relative to the paper placing structure; the end of the introduction wheel group adjacent to the paper placing structure is arranged on the base, and the paper picking wheel group adjacent to the introduction wheel group is arranged on the base; the alternating paper picking wheel group is movably arranged above the paper picking wheel group, and the paper picking power mechanism is drivingly connected to the alternating paper picking wheel group, and the paper picking power mechanism is connected to the base. The paper feeder of the printer of the utility model can alternately feed paper during continuous printing and prevent excess paper from being fed out; therefore, the paper feeder of the printer of the utility model solves the technical problem of how to improve the paper feeding stability of the paper feeder during continuous printing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of the paper feeder of the printer of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the paper feeder of the printer of the utility model from another direction;

[0020] Figure 3 It is a structural schematic diagram of the other side of the structure of the paper feeder of the printer of the utility model;

[0021] Figure 4 It is a structural schematic diagram of the other side of the structure of the paper feeder of the printer of the utility model. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0023] 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, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0024] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0025] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0027] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0028] Please also read Figures 1 to 4 The paper feeder of the printer of the utility model comprises: a base 1, a paper placing structure 2, a plurality of blocking blocks 3, an introduction wheel group 4, a paper picking wheel group 5, an alternating paper picking wheel group 6 and a paper picking power mechanism 7; the paper placing structure 2 is arranged on one side of the base 1, and the plurality of blocking blocks 3 are evenly arranged on the other side of the base 1 relative to the paper placing structure 2; the introduction wheel group 4 is arranged on the base 1 adjacent to the end of the paper placing structure 2, and the paper picking wheel group 5 is arranged on the base 1 adjacent to the introduction wheel group 4; the alternating paper picking wheel group 6 is movably arranged above the paper picking wheel group 5, and the paper picking power mechanism 7 is drivingly connected to the alternating paper picking wheel group 6, and the paper picking power mechanism 7 is connected to the base 1.

[0029] Specifically, when the paper feeder of the utility model printer is in the working process, the user can place the whole stack of paper on the paper placing structure 2 in advance. Since the paper placing structure 2 is an inclined guide frame-like structure, the paper can be automatically guided and stacked on one side of the base 1 under the action of gravity, and located in the working area of ​​the introduction wheel group 4. When paper feeding is required, the paper plucking power mechanism 7 can drive the alternating paper plucking wheel group 6 to rotate above the pickup wheel group 5 and the introduction wheel group 4. When the alternating paper plucking wheel group 6 rotates and passes above the introduction wheel group 4, it moves relative to the introduction wheel group 4, and then abuts against and drives a paper forward; after the forward paper passes the working area of ​​the pickup wheel group 5, the pickup wheel group 5 cooperates with the alternating paper plucking wheel group 6 to pull the paper to continue to move forward to the preset area; the blocking block 3 can block excess paper to prevent excess paper from being sent out. It can be seen that the printer paper feeder of the utility model can alternately feed paper during continuous printing and prevent excess paper from being fed out; therefore, the printer paper feeder of the utility model solves the technical problem of how to improve the paper feeding stability of the paper feeder during continuous printing.

[0030] Furthermore, the base 1 is provided with a seat frame 101 and a reference frame 102 . The reference frame 102 is provided on the seat frame 101 . Two side surfaces of the reference frame 102 are respectively connected to the paper placing structure 2 and a plurality of the blocking blocks 3 .

[0031] Furthermore, each of the blocking blocks 3 has a fastener 301, a blocking seat body 302 and an L-shaped clip 303; the fastener 301 connects the blocking seat body 302 and the seat frame 101 respectively, the L-shaped clip 303 is connected to the blocking seat body 302, and the L-shaped clip 303 is connected to the side of the reference frame 102.

[0032] Furthermore, the introduction wheel group 4 has an introduction wheel axle 401 and a plurality of introduction wheel structures 402 ; the introduction wheel axle 401 is connected to the reference frame 102 , a plurality of the introduction wheel structures 402 are evenly spaced on the introduction wheel axle 401 , and the introduction wheel structures 402 are movably connected to the reference frame 102 .

[0033] Furthermore, the pickup wheel group 5 has a pickup wheel shaft 501, a plurality of pickup wheel structures 502 and a pickup wheel reduction gear group 503; the pickup wheel shaft 501 is adjacent to the introduction wheel shaft 401 and is arranged on the reference frame 102, a plurality of pickup wheel structures 502 are evenly spaced and arranged on the pickup wheel shaft 501, and the pickup wheel structure 502 is movably connected to the reference frame 102; the pickup wheel reduction gear group 503 is connected to one end of the pickup wheel shaft 501, and the pickup wheel reduction gear group 503 is movably connected to the seat frame 101.

[0034] Furthermore, the alternating paper-pickup wheel group 6 comprises a paper-pickup wheel power shaft 601, a plurality of rotating drum structures 602, a plurality of paddle wheel shafts 603 and a plurality of paddle wheel structures 604; a plurality of rotating drum structures 602 are evenly arranged on the paper-pickup wheel power shaft 601, a paddle wheel shaft 603 is correspondingly arranged in each rotating drum structure 602, and each paddle wheel structure 604 is correspondingly movably connected to a paddle wheel shaft 603. Specifically, a plurality of paddle wheel structures 604 are arranged in a staggered manner so that the outermost edges of each paddle wheel structure 604 are not on the same paddle axis, thereby realizing an alternating paddle motion.

[0035] Furthermore, the paper-moving power mechanism 7 has a power machine 701, a power connecting frame 702, an input power reduction gear 703 and a coupling 704; the power machine 701 is connected to the side of the power connecting frame 702, and the power connecting frame 702 is arranged on the base frame 101; the input power reduction gear 703 is movably arranged in the power connecting frame 702, and the power machine 701 is drivingly connected to the input power reduction gear 703; the coupling 704 is respectively connected to the input power reduction gear 703 and the paper-moving wheel power shaft 601.

[0036] Specifically, the power output by the power machine 701 can be reduced in speed and increased in torque by the input power reduction gear 703, and then transmitted to the paper-pumping wheel power shaft 601 through the coupling 704, so as to drive the rotating drum structure 602 to rotate simultaneously, so that the alternately arranged paddle wheel structures 604 sequentially abut against the surface of the paper, and the paper is pulled in by the introduction wheel structure 402, and then the paper is sent to a preset position by the pickup wheel structure 502. The L-shaped clamping portion 303 can block excess paper to ensure that one sheet of paper is fed in each time.

[0037] In summary, the paper feeder of the printer of the utility model is respectively provided with a base 1, a paper placing structure 2, a plurality of blocking blocks 3, an introduction wheel group 4, a paper picking wheel group 5, an alternating paper picking wheel group 6 and a paper picking power mechanism 7; the paper placing structure 2 is arranged on one side of the base 1, and a plurality of blocking blocks 3 are evenly arranged on the other side of the base 1 relative to the paper placing structure 2; the end of the introduction wheel group 4 adjacent to the paper placing structure 2 is arranged on the base 1, and the paper picking wheel group 5 is arranged on the base 1 adjacent to the introduction wheel group 4; the alternating paper picking wheel group 6 is movably arranged above the paper picking wheel group 5, and the paper picking power mechanism 7 is drivingly connected to the alternating paper picking wheel group 6, and the paper picking power mechanism 7 is connected to the base 1. The paper feeder of the printer of the utility model can alternately feed paper during continuous printing and prevent excess paper from being fed out; therefore, the paper feeder of the printer of the utility model solves the technical problem of how to improve the paper feeding stability of the paper feeder during continuous printing.

[0038] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0039] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A printer paper feeder, characterized in that: It includes: A base (1), a paper placing structure (2), a plurality of blocking blocks (3), an introduction wheel group (4), a paper picking wheel group (5), an alternating paper picking wheel group (6) and a paper picking power mechanism (7); the paper placing structure (2) is arranged on one side of the base (1), and the plurality of blocking blocks (3) are evenly arranged on the other side of the base (1) relative to the paper placing structure (2); the introduction wheel group (4) is arranged on the base (1) adjacent to the end of the paper placing structure (2), and the paper picking wheel group (5) is arranged on the base (1) adjacent to the introduction wheel group (4); the alternating paper picking wheel group (6) is movably arranged above the paper picking wheel group (5), and the paper picking power mechanism (7) is drivingly connected to the alternating paper picking wheel group (6), and the paper picking power mechanism (7) is connected to the base (1).

2. The printer paper feeder according to claim 1, characterized in that: The base (1) is provided with a seat frame (101) and a reference frame (102); the reference frame (102) is arranged on the seat frame (101); and two side surfaces of the reference frame (102) are respectively connected to the paper placing structure (2) and a plurality of the blocking blocks (3).

3. The printer paper feeder according to claim 2, characterized in that: Each of the blocking blocks (3) comprises a fastener (301), a blocking seat (302) and an L-shaped clamping portion (303); the fastener (301) respectively connects the blocking seat (302) and the seat frame (101); the L-shaped clamping portion (303) is connected to the blocking seat (302); and the L-shaped clamping portion (303) is connected to the side of the reference frame (102).

4. The printer paper feeder according to claim 3, characterized in that: The introduction wheel set (4) comprises an introduction wheel axle (401) and a plurality of introduction wheel structures (402); the introduction wheel axle (401) is connected to the reference frame (102), a plurality of introduction wheel structures (402) are evenly spaced and arranged on the introduction wheel axle (401), and the introduction wheel structures (402) are movably connected to the reference frame (102).

5. The printer paper feeder according to claim 4, characterized in that: The pickup wheel assembly (5) comprises a pickup wheel shaft (501), a plurality of pickup wheel structures (502) and a pickup wheel reduction gear assembly (503).

6. The printer paper feeder according to claim 5, characterized in that: The pickup wheel shaft (501) is arranged on the reference frame (102) adjacent to the introduction wheel shaft (401); a plurality of pickup wheel structures (502) are evenly spaced and arranged on the pickup wheel shaft (501); the pickup wheel structures (502) are movably connected to the reference frame (102); the pickup wheel reduction gear set (503) is connected to one end of the pickup wheel shaft (501); and the pickup wheel reduction gear set (503) is movably connected to the seat frame (101).

7. The printer paper feeder according to claim 6, characterized in that: The alternating paper paddle wheel group (6) comprises a paper paddle wheel power shaft (601), a plurality of rotating drum structures (602), a plurality of paddle wheel shafts (603) and a plurality of paddle wheel structures (604); a plurality of rotating drum structures (602) are evenly arranged on the paper paddle wheel power shaft (601), a paddle wheel shaft (603) is correspondingly arranged in each of the rotating drum structures (602), and each of the paddle wheel structures (604) is movably connected to a paddle wheel shaft (603).

8. The printer paper feeder according to claim 7, characterized in that: The paper-moving power mechanism (7) comprises a power machine (701), a power connecting frame (702), an input power reduction gear (703) and a coupling (704).

9. The printer paper feeder according to claim 8, characterized in that: The power machine (701) is connected to the side of the power connecting frame (702), and the power connecting frame (702) is arranged on the seat frame (101).

10. The printer paper feeder according to claim 9, characterized in that: The input power reduction gear (703) is movably arranged in the power connection frame (702), and the power machine (701) is drivingly connected to the input power reduction gear (703); the coupling (704) is respectively connected to the input power reduction gear (703) and the paper paddle wheel power shaft (601).

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