Double-sided printing paper feeding mechanism

Abstract

The utility model belongs to the technical field of paper feeding structures of printers, and provides a double-sided printing paper feeding mechanism, which comprises a paper feeding mechanism, a printing mechanism, a lower paper feeding mechanism, an overturning bin and an upper paper discharging mechanism, a printing module is installed above the printing mechanism conveying part, and the paper outlet end of the printing mechanism is connected with an after-printing paper outlet mechanism. The lower paper feeding mechanism is installed below the paper outlet end of the printing mechanism, a lower turning plate is installed between the lower paper feeding mechanism and the printing mechanism, and the top face of the lower turning plate is connected with the after-printing paper outlet mechanism and the paper outlet end of the printing mechanism. The lower paper feeding mechanism comprises a turnover paper path structure; according to the utility model, the paper feeding mechanism, the printing mechanism, the lower paper feeding mechanism, the overturning bin and the upper paper discharging mechanism are arranged, so that the paper feeding mechanism has the functions of overturning a paper path, changing the paper conveying direction, rejecting waste, drying, double-sided printing and the like, and the printing efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of printer paper feeding structure, specifically a double-sided printing paper feeding mechanism. Background Technology

[0002] The technological background of digital sheet-fed printers is closely related to the needs of digital production and the innovation of traditional printing technology. With the explosive growth of demand for short-run printing, personalized customization, and rapid delivery, traditional offset printing equipment is unable to meet the requirements of flexible production due to problems such as high plate-making costs and complex processes, while early digital printing equipment has limitations in terms of media adaptability, printing accuracy, and stability.

[0003] Traditional printing structures require manual paper flipping, leading to production interruptions and long waiting times. The printing, alignment, and drying processes are independent of each other and require manual paper transfer, making the process fragmented.

[0004] To address the problems raised in the background art, those skilled in the art have proposed a double-sided printing paper feeding mechanism. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model provides a double-sided printing paper feeding mechanism to solve the problem that traditional printing structures in the prior art require manual paper transfer and have a fragmented process.

[0006] A double-sided printing paper feeding mechanism includes: a paper feeding mechanism, a printing mechanism, a lower paper feeding mechanism, a flipping compartment, and an upper paper output mechanism; a deviation correction mechanism is connected between the paper feeding mechanism and the printing mechanism.

[0007] A printing module is installed above the transmission section of the printing mechanism, and a post-printing paper output mechanism is connected to the paper output end of the printing mechanism.

[0008] The paper feed mechanism is installed below the paper output end of the printing mechanism, and a lower flap is installed between the paper feed mechanism and the printing mechanism. The top surface of the lower flap connects the post-printing paper output mechanism and the paper output end of the printing mechanism.

[0009] The paper feeding mechanism includes a paper tilting path structure; the paper inlet of the tilting chamber is connected to the paper outlet of the paper feeding mechanism, and a tilting component is installed inside the tilting chamber, the tilting component controlling and adjusting the paper feeding direction;

[0010] The upper paper output mechanism has a rotating flip plate rotatably installed at the paper inlet end, and the flip plate is located at the connection between the lower paper feed mechanism and the flip chamber; the lower flip plate and the flip plate are both controlled to rotate by a controller, a photoelectric sensor and an electromagnet.

[0011] Preferably, the paper feeding mechanism has an upward-flipping outlet installed inside, and a waste rejection flap is installed between the upward-flipping outlet and the paper feeding mechanism. The waste rejection flap is controlled to rotate by a controller, a photoelectric sensor and an electromagnet.

[0012] Preferably, the correction mechanism and the paper feeding mechanism are connected by a front paper adjustment path.

[0013] Preferably, the printing mechanism includes a printing suction belt and a drying suction belt.

[0014] Preferably, the flipping assembly includes a support frame, a flipping motor, a rotating frame, a second rubber roller, and a first rubber roller; the support frame is fixedly installed on the upper surface of the flipping chamber, a first rotating rod is rotatably installed on the support frame, the rotating frame is fixedly connected to the first rotating rod, the flipping motor is installed on the rear end face of the rotating frame, the output end of the flipping motor extends to the front end face of the rotating frame, and the second rubber roller and the first rubber roller are rotatably installed on the inner wall of the rotating frame; a forward transmission assembly is installed between the flipping motor and the first rubber roller, and a reverse transmission assembly is installed between the forward transmission assembly and the second rubber roller; the forward transmission assembly drives the first rubber roller to rotate forward, and the reverse transmission assembly drives the second rubber roller to rotate in the reverse direction, and the flipping motor is installed close to the first rubber roller.

[0015] Preferably, the forward transmission assembly includes a first synchronous pulley, a first synchronous belt, and a second synchronous pulley. The first rubber roller passes through the rotating frame, and the first synchronous pulley is installed at one end of the first rubber roller. A transmission rod is installed through the inner wall of the rotating frame, and the second synchronous pulley is installed at one end of the transmission rod. The flipping motor synchronously drives the first synchronous pulley and the second synchronous pulley through the first synchronous belt.

[0016] The reverse transmission assembly includes a third synchronous pulley, a fourth synchronous pulley, a driving tooth, a driven tooth, and a second synchronous belt. The second rubber roller passes through the rotating frame, and the fourth synchronous pulley is installed at one end of the second rubber roller. The driving tooth is installed at the other end of the transmission rod. The axle of the third synchronous pulley passes through the rotating frame, and the driven tooth is installed at the end of the axle of the third synchronous pulley. The driving tooth meshes with the driven tooth. The second synchronous belt is installed between the third synchronous pulley and the fourth synchronous pulley.

[0017] Preferably, a number of photoelectric sensors are installed on the top wall of the tilting chamber, a first electromagnet is rotatably installed on the bottom side of the tilting chamber, and a first traction rod is rotatably installed between the first electromagnet and the first rotating rod.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] This invention improves printing efficiency by incorporating a paper feeding mechanism, a printing mechanism, a lower paper feeding mechanism, a flipping chamber, and an upper paper output mechanism. This allows the paper feeding mechanism to perform functions such as flipping the paper path, changing the paper feeding direction, rejecting waste, drying, and double-sided printing. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 for Figure 1 Enlarged view of part A in the middle;

[0022] Figure 3 for Figure 1 Enlarged view of part B in the middle section;

[0023] Figure 4 for Figure 1 Enlarged view of part C in the middle;

[0024] Figure 5 This is a three-dimensional structural diagram of the tipping compartment;

[0025] Figure 6 for Figure 5 Enlarged view of part D in the middle.

[0026] In the picture:

[0027] 1. Paper feeding mechanism; 101. Waste rejection flap; 102. Upward flip-out outlet; 2. Correction mechanism; 201. Front paper path adjustment; 3. Printing mechanism; 301. Printing suction belt; 302. Drying suction belt; 4. Downward paper feeding mechanism; 401. Downward flap; 403. Flipping paper path structure; 5. Flipping compartment; 502. Second rubber roller; 503. First rubber roller; 504. Flipping motor; 505. First electromagnet; 507. Support frame; 508. Rotating frame; 6. Upward paper output mechanism; 601. Flipping plate; 7. Post-printing paper output mechanism; 8. First synchronous pulley; 9. First synchronous belt; 10. Second synchronous pulley; 1001. Transmission rod; 11. Third synchronous pulley; 12. Fourth synchronous pulley; 13. Driving gear; 14. Driven gear; 15. First traction rod; 1501. First rotating rod; 17. Second synchronous belt. Detailed Implementation

[0028] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0029] Example 1: As shown in the attached document Figure 1 To be continued Figure 6As shown: This utility model provides a double-sided printing paper feeding mechanism, including a paper feeding mechanism 1, a printing mechanism 3, a lower paper feeding mechanism 4, a flipping compartment 5, and an upper paper output mechanism 6;

[0030] A paper feeding mechanism 1 and a printing mechanism 3 are connected by a correction mechanism 2; a printing module is installed above the transmission section of the printing mechanism 3; and a post-printing paper output mechanism 7 is connected to the paper output end of the printing mechanism 3.

[0031] The paper feed mechanism 4 is installed below the paper output end of the printing mechanism 3, and a lower flap 401 is installed between the paper feed mechanism 4 and the printing mechanism 3. The top surface of the lower flap 401 is connected to the post-printing paper output mechanism 7 and the paper output end of the printing mechanism 3.

[0032] The paper feeding mechanism 4 includes a paper path tilting structure 403; the paper feed end of the tilting chamber 5 is connected to the paper output end of the paper feeding mechanism 4, and a tilting component is installed inside the tilting chamber 5, which controls and adjusts the paper feeding direction;

[0033] The upper paper output mechanism 6 has a rotating flip plate 601 mounted on the paper input end, and the flip plate 601 is located at the connection between the lower paper feed mechanism 4 and the flip chamber 5; the lower flip plate 401 and the flip plate 601 are both controlled to rotate by a controller, a photoelectric sensor and an electromagnet.

[0034] The paper feeding mechanism 1 is equipped with an upward-flipping outlet 102. A waste rejection flap 101 is installed between the upward-flipping outlet 102 and the paper feeding mechanism 1. The waste rejection flap 101 is controlled to rotate by a controller, a photoelectric sensor and an electromagnet.

[0035] The paper path 201 is connected to the paper feeding mechanism 1 via the paper correction mechanism 2.

[0036] The printing mechanism 3 includes a printing suction belt 301 and a drying suction belt 302.

[0037] The workflow is as follows:

[0038] ① Paper feeding: The paper feeding mechanism 1 consists of a waste rejection flap 101, an upward flip outlet 102, and an overall paper path adjustment mechanism. The paper is supplied by the paper feeder and enters the paper feeding mechanism 1. The waste rejection detection sensor in front of the waste rejection flap 101 is detected immediately and sends a signal to the detected double sheets or waste paper. After receiving the signal, the waste rejection flap 101 will be flipped upward at a set angle by the controller so that the paper enters the waste rejection outlet. After the waste is rejected, a waste rejection completion signal is sent. At this time, the front paper feeder will be re-issued paper by the controller.

[0039] ②Correction: The correction mechanism 2 consists of three sets of pressure rollers; when the paper enters the circulating paper path smoothly, the correction mechanism 2 will detect the skewness and position of the paper at the paper path 201 before correction, and transmit the detection results into the controller. At this time, the correction mechanism 2 will adjust the position accordingly to ensure that the paper entering the printing mechanism is within a reasonable printing range. After the paper passes, the correction mechanism 2 will reset.

[0040] ③ Printing: The printing mechanism 3 consists of a printing suction belt 301, a drying suction belt 302, and a printing module above the printing mechanism 3; when the paper that has been corrected enters the printing suction belt 301, the printing suction belt 301 fixes the paper on the belt and sends it to the bottom of the printing module for printing.

[0041] ④ Drying: The paper after passing through the printing suction belt 301 is fed into the drying suction belt 302 for drying. Because this machine uses water-based ink printing, the ink on the surface of the paper will not be completely dried after passing through the printing suction belt 301 at high speed. If it enters the paper feeding mechanism at 4, the ink on the paper will be scratched.

[0042] ⑤ Flip: This machine needs to print on both sides of the paper. After the paper has been printed and dried, only one side is printed, so the paper needs to be fed down to flip the paper over.

[0043] The lower paper feeding mechanism 4 consists of a lower flap 401 and a flipping paper path structure 403. The paper enters the lower paper feeding mechanism 4 from the lower flap 401 and is transported by pressure rollers at reasonable intervals. The pressure rollers are powered by a motor and belt, so that the paper is driven within a reasonable position and enters the flipping chamber 5 and is then transported in the opposite direction to the upper paper output mechanism 6. The paper position is controlled by the belt pressure rollers throughout the entire process.

[0044] ⑥ After printing is completed, the paper is output: After the paper has gone through the paper path, it goes back into the correction mechanism 2 and is corrected, printed and dried again. The whole process is considered the whole process of a product. After the whole process is completed, the paper is transported from the drying suction belt 302 to the post-printing paper output mechanism 7.

[0045] ⑦ Loop, termination condition: no paper on the platform or manual shutdown.

[0046] Example 2: Based on Example 1, the flipping assembly includes a support frame 507, a flipping motor 504, a rotating frame 508, a second rubber roller 502, and a first rubber roller 503. The support frame 507 is fixedly installed on the upper surface of the flipping chamber 5. A first rotating rod 1501 is rotatably installed on the support frame 507. The rotating frame 508 is fixedly connected to the first rotating rod 1501. The flipping motor 504 is installed on the rear end face of the rotating frame 508. The output end of the flipping motor 504 extends to the front end face of the rotating frame 508. The second rubber roller 502 and the first rubber roller 503 are rotatably installed on the inner wall of the rotating frame 508. A forward transmission assembly is installed between the flipping motor 504 and the first rubber roller 503. A reverse transmission assembly is installed between the forward transmission assembly and the second rubber roller 502. The forward transmission assembly drives the first rubber roller 503 to rotate forward, and the reverse transmission assembly drives the second rubber roller 502 to rotate in the reverse direction. The flipping motor 504 is installed close to the first rubber roller 503.

[0047] The forward transmission assembly includes a first synchronous pulley 8, a first synchronous belt 9, and a second synchronous pulley 10. A first rubber roller 503 passes through a rotating frame 508, and the first synchronous pulley 8 is installed at one end of the first rubber roller 503. A transmission rod 1001 is installed through the inner wall of the rotating frame 508, and the second synchronous pulley 10 is installed at one end of the transmission rod 1001. The flipping motor 504 synchronously drives the first synchronous pulley 8 and the second synchronous pulley 10 through the first synchronous belt 9.

[0048] The reverse transmission assembly includes a third synchronous pulley 11, a fourth synchronous pulley 12, a driving gear 13, a driven gear 14, and a second synchronous belt 17. A second rubber roller 502 passes through a rotating frame 508. The fourth synchronous pulley 12 is installed at one end of the second rubber roller 502, and the driving gear 13 is installed at the other end of the transmission rod 1001. The axle of the third synchronous pulley 11 passes through the rotating frame 508, and the driven gear 14 is installed at the end of the axle of the third synchronous pulley 11. The driving gear 13 meshes with the driven gear 14. The second synchronous belt 17 is installed between the third synchronous pulley 11 and the fourth synchronous pulley 12.

[0049] Several photoelectric sensors are installed on the top wall of the tilting chamber 5. A first electromagnet 505 is rotatably installed on the bottom side of the tilting chamber 5, and a first traction rod 15 is rotatably installed between the first electromagnet 505 and the first rotating rod 1501.

[0050] The flip motor 504 drives the first synchronous belt 9, which in turn drives the first synchronous pulley 8 and the second synchronous pulley 10 to rotate. The first synchronous pulley 8 drives the first rubber roller 503 to rotate clockwise, providing initial transmission power. The power of the flip motor 504 is transmitted to the driving gear 13 through the transmission rod 1001, which drives the third synchronous pulley 11 through the driven gear 14, and then drives the fourth synchronous pulley 12 to rotate counterclockwise through the second synchronous belt 17, ultimately driving the second rubber roller 502 to rotate in the opposite direction. The flip motor 504 is installed at the rear end of the rotating frame 508. The offset center of gravity design allows the rotating frame 508 to move down quickly when the first electromagnet 505 is de-energized and reset, switching the position of the two rubber rollers.

[0051] As can be seen from the above, the paper is fed into the tilting chamber 5 by the paper feeding mechanism 4. The paper is held by the pressure rollers in the tilting chamber 5 and fed into the tilting chamber 5 by the power of the tilting motor 504. The pressure rollers ensure that the paper is flat and without deviation. When the paper enters the tilting chamber 5, it blocks the light path of the photoelectric sensor. The photoelectric sensor sends a high-level signal to the controller. The controller sends a signal to the first electromagnet 505 to generate positive and negative voltages. The first traction rod 15 pushes the first rotating rod 1501 to deflect, thereby controlling the rotating frame 508 to rotate in reverse. This causes the first rubber roller 503 to disengage from the paper, and the second rubber roller 502 to move down and contact the paper to generate friction. At this time, the paper transmission direction changes and it is discharged through the paper inlet of the tilting chamber 5.

[0052] The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0053] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A double-sided printing paper feeding mechanism, characterized in that: include: The paper feeding mechanism (1), printing mechanism (3), bottom paper feeding mechanism (4), flipping compartment (5) and top paper output mechanism (6); a guide mechanism (2) is connected between the paper feeding mechanism (1) and the printing mechanism (3); A printing module is installed above the transmission section of the printing mechanism (3), and the paper output end of the printing mechanism (3) is connected to a post-printing paper output mechanism (7); The paper feed mechanism (4) is installed below the paper output end of the printing mechanism (3), and a lower flap (401) is installed between the paper feed mechanism (4) and the printing mechanism (3), and the top surface of the lower flap (401) is connected to the post-printing paper output mechanism (7) and the paper output end of the printing mechanism (3); The paper feeding mechanism (4) includes a paper path flipping structure (403); the paper feed end of the flipping chamber (5) is connected to the paper output end of the paper feeding mechanism (4), and a flipping component is installed in the flipping chamber (5), which controls and adjusts the paper feeding direction; The upper paper output mechanism (6) has a rotating flip plate (601) rotatably installed at the paper input end, and the flip plate (601) is located at the connection between the lower paper feed mechanism (4) and the flip chamber (5); the lower flip plate (401) and the flip plate (601) are both controlled to rotate by a controller, a photoelectric sensor and an electromagnet.

2. The double-sided printing paper feeding mechanism as described in claim 1, characterized in that: The paper feeding mechanism (1) is equipped with an upward-turning outlet (102), and a waste rejection flap (101) is installed between the upward-turning outlet (102) and the paper feeding mechanism (1). The waste rejection flap (101) is controlled to rotate by a controller, a photoelectric sensor and an electromagnet.

3. The double-sided printing paper feeding mechanism as described in claim 2, characterized in that: The correction mechanism (2) is connected to the paper feeding mechanism (1) by a front paper path (201).

4. The double-sided printing paper feeding mechanism as described in claim 3, characterized in that: The printing mechanism (3) includes a printing suction belt (301) and a drying suction belt (302).

5. The double-sided printing paper feeding mechanism as described in claim 1, characterized in that: The flipping assembly includes a support frame (507), a flipping motor (504), a rotating frame (508), a second rubber roller (502), and a first rubber roller (503). The support frame (507) is fixedly installed on the upper surface of the flipping chamber (5). A first rotating rod (1501) is rotatably installed on the support frame (507). The rotating frame (508) is fixedly connected to the first rotating rod (1501). The flipping motor (504) is installed on the rear end face of the rotating frame (508). The output end of the flipping motor (504) extends to the rotating frame (508). 8) On the front end face, a second rubber roller (502) and a first rubber roller (503) are rotatably mounted on the inner wall of the rotating frame (508); a forward transmission component is installed between the flipping motor (504) and the first rubber roller (503), and a reverse transmission component is installed between the forward transmission component and the second rubber roller (502); the forward transmission component drives the first rubber roller (503) to rotate in the forward direction, and the reverse transmission component drives the second rubber roller (502) to rotate in the reverse direction, and the flipping motor (504) is installed close to the first rubber roller (503).

6. The double-sided printing paper feeding mechanism as described in claim 5, characterized in that: The forward transmission assembly includes a first synchronous pulley (8), a first synchronous belt (9), and a second synchronous pulley (10). The first rubber roller (503) passes through the rotating frame (508). The first synchronous pulley (8) is installed at one end of the first rubber roller (503). A transmission rod (1001) is installed through the inner wall of the rotating frame (508). The second synchronous pulley (10) is installed at one end of the transmission rod (1001). The flipping motor (504) synchronously drives the first synchronous pulley (8) and the second synchronous pulley (10) through the first synchronous belt (9). The reverse transmission assembly includes a third synchronous pulley (11), a fourth synchronous pulley (12), a driving gear (13), a driven gear (14), and a second synchronous belt (17). The second rubber roller (502) passes through the rotating frame (508). The fourth synchronous pulley (12) is installed at one end of the second rubber roller (502). The driving gear (13) is installed at the other end of the transmission rod (1001). The axle of the third synchronous pulley (11) passes through the rotating frame (508), and the driven gear (14) is installed at the end of the axle of the third synchronous pulley (11). The driving gear (13) meshes with the driven gear (14). The second synchronous belt (17) is installed between the third synchronous pulley (11) and the fourth synchronous pulley (12).

7. The double-sided printing paper feeding mechanism as described in claim 6, characterized in that: The top wall of the tilting chamber (5) is equipped with several photoelectric sensors. A first electromagnet (505) is rotatably installed on the bottom side of the tilting chamber (5), and a first traction rod (15) is rotatably installed between the first electromagnet (505) and the first rotating rod (1501).

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