A separating device for printing paper and a printer

Abstract

The present invention relates to a separating device for printing paper, which comprises a base and a paper jamming member. A printing paper accommodating cavity is provided on the base. The separating device further comprises a shaping structure that arches the middle part of the printing paper and makes both sides of the printing paper close to the bottom of the printing paper accommodating cavity. The paper jamming member is provided with a yielding middle part that cooperates with the shaping structure and paper blocking parts arranged on both sides thereof, and only one printing paper can pass through the paper blocking parts. The printing paper separating device of the present invention solves the problem that multiple printing papers are transmitted simultaneously when transmitting the printing paper. The present invention also provides a printer. Since the printing paper is transmitted smoothly, problems such as the printer being unable to print or the printer malfunctioning due to multiple printing papers being fed in are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of printers, and in particular to a separating device for printing paper and a printer. Background Art

[0002] Since printers print one by one, it is necessary to ensure that there is exactly one piece of printing paper entering the printer from the unprinted paper in the paper feed bin each time. Currently, the separating devices used all utilize the different frictional forces between the paper feed roller, the printing paper, and the friction sheet to separate and feed the paper, thereby avoiding the problem of two or more pieces of printing paper entering the printer simultaneously. However, since the frictional force between the printing papers is not fixed, when the environment is relatively humid, the printing paper will get damp and sticky, resulting in the printer feeding two or more pieces of paper at a time, and ultimately causing the printer to malfunction and stop. When the environment is relatively dry, static electricity will be generated between the printing papers and they will adsorb to each other. It is difficult to separate them using the existing paper feed roller and friction sheet, and the problem of the printer feeding multiple pieces of paper at a time will also occur. Moreover, the dry paper will reduce the frictional force between it and the paper feed roller and the friction sheet, resulting in the paper feed roller idling without feeding paper. Summary of the Invention

[0003] The main purpose of the present invention is to provide a separating device for printing paper and a printer to solve the problem that the transported printing paper may not be the only one in the above problems.

[0004] To solve the above problems, the present invention provides a separating device for printing paper, including a base and a paper jamming member. A printing paper accommodating cavity is provided on the base, and further includes a shaping structure that arches the middle part of the printing paper and makes both sides of the printing paper close to the bottom of the printing paper accommodating cavity. The paper jamming member is provided with a middle part that cooperates with the shaping structure and at least one paper blocking part on both sides that allows only one piece of printing paper to pass through.

[0005] Further, the shaping structure includes a supporting part that protrudes upward from the bottom of the printing paper accommodating cavity to arch the middle part of the printing paper and a pressing part that presses downward on both sides of the printing paper to make both sides of the printing paper close to the printing paper accommodating cavity.

[0006] Further, a paper feed roller is provided in the middle of the front end of the bottom of the printing paper accommodating cavity. The paper feed roller protrudes upward from the bottom of the printing paper accommodating cavity, and the supporting part is provided on the paper feed roller.

[0007] Further, the paper feed roller conveys the printing paper forward under the drive of a driving device.

[0008] Further, it further includes a pressing member. The pressing part is provided on both sides of the front end of the pressing member, which makes both sides of the printing paper close to the bottom of the printing paper accommodating cavity.

[0009] Further, the shaping structure includes two limiting walls and a pressing member that cooperates with the two limiting walls to apply pressure to the printing paper in the direction of the bottom of the printing paper accommodating cavity. The two side walls are arranged in parallel and the distance therebetween is less than the width of one sheet of paper.

[0010] Further, an arch-shaped chamfer is provided at the middle of the cutout on the side of the paper jamming member close to the printing paper accommodating cavity, and the chamfer is adapted to the printing paper with a middle arch.

[0011] Further, paper blocking portions are provided on both sides of the paper jamming member, and two cutout ends are provided at both ends of the paper jamming member. The paper blocking portions on both sides are respectively located between the middle cutout and the two cutout ends.

[0012] The present invention also provides a printer, including a housing and the separating device for a printing paper as described above.

[0013] Further, an elastic member for applying pressure to the printing paper in the direction of the printing paper accommodating cavity is provided between the pressing member and the housing.

[0014] The beneficial effects brought by the technical solution provided by the present invention are as follows:

[0015] 1. In this solution, the middle of the printing paper is arched through the shaping structure, so that it is easy to extract the bottom paper between the arched printing papers, which is beneficial to reducing the mutual adsorption between the printing papers and facilitating the transmission of a single printing paper. The paper jamming member is provided with a paper blocking portion that only allows one sheet of paper to pass through, ensuring that the printing paper fed into the printer is unique and solving the problem of simultaneous transmission of multiple printing papers.

[0016] 2. An elastic member for applying pressure to the printing paper in the direction of the printing paper accommodating cavity is provided between the pressing member and the housing, increasing the friction force during the transmission of the printing paper, so that the paper feed roller will not idly rotate without feeding paper due to too small friction force, reducing the failure rate of the printer. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is an exploded schematic diagram of the present invention.

[0018] Figure 2 and Figure 3 is a schematic diagram of different perspectives of the paper jamming member 2 of the present invention.

[0019] Figure 4 is for the present invention Figure 1 a cross-sectional view taken along line A-A in.

[0020] Figure 5 is for the present invention Figure 4 an enlarged schematic diagram of D in.

[0021] Figure 6It is a schematic structural diagram of the supporting part and the pressing part of the present invention.

[0022] Figure 7 For the present invention Figure 1 Cross-sectional view of BB.

[0023] Figure 8 For the present invention Figure 1 Cross-sectional view of CC.

[0024] Figure 9 For the present invention Figure 8 A magnified schematic diagram of E.

[0025] Figure 10 FIG. 4 is a structural diagram of a second embodiment of the present invention.

[0026] Figure 11 The second embodiment of the present invention is Figure 1 Cross-sectional view of CC.

[0027] Figure 12 The figure is a schematic structural diagram of a printer of the present invention.

[0028] Markings in the figure: 1. base; 2. paper jam; 3. pressure member; 4. printing paper; 5. paper pickup roller; 6. elastic member; 11. printing paper holding chamber; 12. card slot; 13. opening; 21. support plate; 22. extension part; 23. middle part of the yield; 24. paper stop part; 25. yield end; 26. chamfer; 51. support part; 72. clamping part; 8. limiting wall; 111. bottom of the printing paper holding chamber; 112. support bar; 221. fastener. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention.

[0030] like Figure 1As shown, in the first embodiment of the present invention, a printing paper separation device includes a base 1, a printing paper accommodating chamber 11 on the base 1 for stacking printing paper 4, a paper pickup roller 5 protruding upward from the bottom 111 of the printing paper accommodating chamber and capable of driving the printing paper 4 to be transported forward, a paper jamming member 2 for accommodating a sheet of printing paper 4 to pass through, a shaping structure for pressing the printing paper 4 to make the middle part of the printing paper 4 arch, and a pressure member 3 for applying pressure to the pressing parts 72 on both sides of the shaping structure to make the two sides of the printing paper 4 close to the bottom 111 of the printing paper accommodating chamber.

[0031] Combination Figures 1 to 5 As shown, the paper jam 2 is a roughly long strip structure, with extended support plates 21 on its left and right sides, which match the card slots 12 on the base 1 and are used to limit the forward and backward movement of the paper jam 2. Extensions 22 are also provided at both ends, and fasteners 221 are provided on the extensions 22 to match the openings 13 on the side walls of the printing paper accommodating chamber 11 to fix the paper jam 2 on the base 1. A yielding middle portion 23, two paper stop portions 24 and two yielding ends 25 are provided at the bottom of the paper jam 2. The yielding middle portion 23 is located in the middle of the bottom, and the two yielding ends 25 are located at the two ends of the bottom. The two paper stop portions 24 are located between the yielding middle portion 23 and the two yielding ends 25. The two paper stop portions 24 are more protruding than the yielding middle portion 23 and the two yielding ends 25. There is a gap between the bottom of the paper jam 2 and the bottom 111 of the printing paper accommodating chamber to accommodate the passing of printing paper 4. As shown Figure 4 As shown, specifically, the paper jam 2 is used to separate the stacked printing papers 4 transmitted from the printing paper receiving chamber 11. In order to improve the printing effect, the effect of printing one by one is the best. By controlling the gap between the paper jam 2 and the printing paper receiving chamber 11, the purpose of separating the stacked printing papers 4 is achieved. The gap between the paper stopper 24 of the paper jam 2 and the printing paper receiving chamber 11 can only accommodate the bottommost printing paper 4 to pass through, and two printing papers 4 cannot be allowed to pass through at the same time, ensuring that the printing paper 4 fed into the printer is unique. It can be assumed that the thickness of the printing paper 4 is L, and the gap between the paper stopper 24 of the paper jam 2 and the printing paper receiving chamber 11 is between L and 2L, and the optimal value of 1.5L can be taken, so that it can ensure that there is enough gap between the bottommost printing papers, and it can also ensure that the gap is insufficient for two printing papers 4 to pass through at the same time. The manufacturing thickness of the printing paper 4 may vary, but it will also be within a certain range. For example, the thickness of the printing paper 4 is between 0.3mm and 0.5mm, and the thickness of two pieces of printing paper 4 is between 0.6mm and 1mm. In this way, we can choose a gap between 0.5mm and 0.6mm, and can take an optimal value of 0.55mm, which can satisfy that only one printing paper 4 can pass through this range.

[0032] Combination Figure 1 , Figure 6 , Figure 7 and Figure 8As shown in the figure, a paper feed roller 5 is provided in the middle of the front end of the bottom 111 of the paper receiving cavity. The paper feed roller 5 protrudes upward from the bottom 111 of the paper receiving cavity. Driven by a driving device, the paper feed roller 5 conveys the printing paper 4 forward. In order to enable the stacked printing paper 4 to be conveyed forward and separated conveniently, a shaping structure is provided on the printing paper 4. The shaping structure applies pressure to make the middle part of the printing paper 4 arch upward and both sides close to the bottom 111 of the paper receiving cavity. The arching of the middle part of the stacked printing paper 4 can make the bottom printing paper 4 easy to draw out and will not be adsorbed together. The close contact of both sides enables the printing paper 4 to be conveyed through the paper blocking member 2 and will not abut against the paper blocking member 2 due to arching, resulting in inability to transmit.

[0033] Specifically, as shown in combination with Figure 8 and Figure 9 the shaping structure includes a support portion 51 that protrudes upward from the bottom 111 of the paper receiving cavity to arch the middle part of the printing paper 4, and a pressing portion 72 that presses downward on both sides of the printing paper 4 to make both sides of the printing paper 4 close to the paper receiving cavity 11. Preferably, the support portion 51 is provided on the paper feed roller, and the paper feed roller 5 protrudes upward from the bottom 111 of the paper receiving cavity. The pressing portion 72 is provided on both sides of the front end of the pressing member 3. By applying a downward pressure through the pressing member 3, both sides of the printing paper 4 are made to close to the bottom 111 of the paper receiving cavity, and the middle part arches due to the paper feed roller 5 protruding from the bottom 111 of the paper receiving cavity, so that the printing paper 4 is easy to draw out, which is beneficial to the separation of the printing paper 4.

[0034] An arch-shaped chamfer 26 is provided at the middle part 23 of the clearance on the side of the paper blocking member 2 close to the paper receiving cavity 11. The shape of the arch-shaped chamfer 26 is adapted to the shape of the printing paper 4 with an arched middle part and is used as a guiding surface for the printing paper 4 with an arched middle part. Both sides of the printing paper 4 are pressed by the pressing portion 72 against the paper receiving cavity 11. During the conveyance of the paper feed roller 5, the highest point of the arch in the middle part of the bottommost printing paper 4 may be higher than the middle part 23 of the clearance of the paper blocking member 2. By providing the arch-shaped chamfer 26, the arch in the middle part of the bottommost printing paper 4 will gradually flatten during transmission and pass through the paper blocking member 2, rather than abutting against the blocking member and being unable to pass, which would require a greater transmission force and may cause the printing paper 4 to be damaged and jammed.

[0035] In order to prevent the electrostatic adsorption effect that may occur when the printing paper 4 is close to the bottom 111 of the paper receiving cavity, resulting in the inability of the bottommost printing paper 4 to be normally conveyed and causing idling, some support bars 112 can be distributed on the bottom 111 of the paper receiving cavity. The height of the support bars 112 is very small, which can ensure that the printing paper 4 will not be wrinkled and can also make each small section of the printing paper 4 and the bottom 111 of the paper receiving cavity have a small gap, making the printing paper 4 easier to convey.

[0036] The usage method and working principle in this embodiment are as follows: First, put a specified amount of printing paper 4 into the printing paper accommodating cavity 11, and use the pressing member 3 to make the shaping structure press tightly against the printing paper 4. Then, turn on the driving device of the printer, and the paper feed roller 5 drives the printing paper 4 to be conveyed. A pressing force is applied to the printing paper 4 through the shaping structure by the pressing member 3. When the printing paper 4 passes through the paper feed roller 5, the middle part of the printing paper 4 will arch along the supporting part 51 on the paper feed roller 5, and both ends are made to be close to both sides of the printing paper accommodating cavity 11 by the pressing part 72. When two or more sheets of printing paper 4 are conveyed to the paper jamming member 2, since the gap of the paper blocking part 24 of the paper jamming member 2 can only accommodate one sheet of printing paper 4 to pass through, under the action of the pressing force and the frictional force transmitted forward by the paper feed roller 5, the bottommost printing paper 4 passes through the paper jamming member 2, and the arched part in the middle is slowly flattened and conveyed forward by the arch-shaped guide angle 26 on the paper jamming member 2 and conveyed into the printer for printing. After the bottommost paper is conveyed through the paper jamming member 2, the second-bottommost printing paper 4 will be pressed against the bottom end of the printing paper accommodating cavity 11 under the action of the pressing member 3 and become the bottommost printing paper 4, and continues to be conveyed forward into the printer for printing under the action of the pressing force and the frictional force transmitted forward by the paper feed roller 5. By operating in this way successively, only one sheet of printing paper 4 is fed into the printer each time.

[0037] The present invention also provides a second embodiment. As shown in combination with Figure 10 and Figure 11 This embodiment is the same as the first embodiment, except for the shaping structure. The shaping structure of the second embodiment includes two limiting walls 8 and a pressing member 3 that cooperates with the two limiting walls 8 to apply a pressure to the printing paper 4 in the direction of the bottom 111 of the printing paper accommodating cavity. The pressing parts 72 on both sides of the front end are used by the pressing member 3 to make both sides of the printing paper 4 closely adhere to the bottom 111 of the printing paper accommodating cavity. The two limiting walls 8 are arranged in parallel in the printing paper accommodating cavity 11 and the distance is less than the width of one sheet of paper, so that the printing paper 4 can arch in the middle when placed in the printing paper accommodating cavity 11, thereby making it easy to extract the printing papers 4 from each other, which is beneficial to the separation of the printing papers 4. Specifically, the two limiting walls 8 can also be set such that one end is movable, or both ends are movable. One end or both ends can be moved according to the type of printing paper 4 to be printed until the distance between the two limiting walls 8 is less than the width of one sheet of paper, so that the printing paper 4 placed in the printing paper accommodating cavity 11 can arch in the middle.

[0038] The present invention also provides a printer. As shown in Figure 12 including a housing (not shown in the figure) and the above-mentioned printing paper separation device. An elastic member 6 for applying a pressure to the printing paper 4 in the direction of the printing paper accommodating cavity 11 is provided between the pressing member 3 and the housing. The elastic member 6 is preferably a spring. One end of the elastic member 6 is fixed on the pressing member 3, and one end is fixed on the housing. The housing applies a pressing force to the pressing member 3 through the elastic member 6, thereby achieving the effect of pressing the printing paper 4 tightly.

[0039] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A separating device for printing paper, comprising a base (1) and a paper jamming member (2), wherein a printing paper receiving cavity (11) is provided on the base (1), and it is characterized in that, It further includes a shaping structure that arches the middle part of the printing paper (4) and makes both sides of the printing paper close to the bottom (111) of the printing paper accommodating cavity. The paper jamming member (2) is provided with a yielding middle part (23) that cooperates with the shaping structure, and at least one paper blocking part (24) that allows only one printing paper (4) to pass through on both sides thereof. The shaping structure includes a pressing part (72) that presses the two sides of the printing paper (4) downward to make both sides of the printing paper (4) close to the printing paper accommodating cavity (11).

2. The separating device for a printing paper according to claim 1, characterized in that, The shaping structure further includes a supporting part (51) that protrudes upward from the bottom (111) of the printing paper accommodating cavity to arch the middle part of the printing paper (4).

3. The separating device for a printing paper according to claim 2, characterized in that, A paper feeding roller (5) is provided in the middle of the front end of the bottom (111) of the printing paper accommodating cavity. The paper feeding roller (5) protrudes upward from the bottom (111) of the printing paper accommodating cavity, and the supporting part (51) is provided on the paper feeding roller (5).

4. The separating device for a printing paper according to claim 3, characterized in that, The paper feeding roller (5) conveys the printing paper (4) forward under the drive of a driving device.

5. The separating device for a printing paper according to claim 2, wherein It further includes a pressing member (3). The pressing part (72) is provided on both sides of the front end of the pressing member (3), and it makes both sides of the printing paper (4) close to the bottom (111) of the printing paper accommodating cavity.

6. The separating device for a printing paper according to claim 1, characterized in that, The shaping structure includes two limiting walls (8) and a pressing member (3) that cooperates with the two limiting walls (8) to apply a pressure to the printing paper (4) in the direction of the bottom (111) of the printing paper accommodating cavity. The two limiting walls (8) are arranged in parallel and the distance therebetween is less than the width of one piece of paper.

7. A separating device for printing paper according to any one of claims 1 to 6, characterized in that The yielding middle part (23) on the side of the paper jamming member (2) close to the printing paper accommodating cavity (11) is provided with an arch-shaped chamfer (26), and the chamfer (26) is adapted to the printing paper (4) with an arched middle part.

8. The separating device for a printing paper according to claim 7, characterized in that, The paper blocking parts (24) are provided on both sides of the paper jamming member (2), and two yielding ends (25) are provided at both ends of the paper jamming member (2). The paper blocking parts (24) on both sides are respectively located between the yielding middle part (23) and the two yielding ends (25).

9. A printer, comprising a housing, characterized in that, It further includes a separating device for a printing paper according to any one of claims 1 to 8.

10. A printer according to claim 9, characterized in that, It further includes a pressing member (3). The pressing part (72) is provided on both sides of the front end of the pressing member (3); an elastic member (6) that applies a pressure to the printing paper (4) in the direction of the printing paper accommodating cavity (11) is provided between the pressing member (3) and the housing.

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