A paper receiving limiting mechanism

Abstract

This utility model provides a paper receiving and limiting mechanism, including a frame. The front end of the frame has a liftable paper receiving platform, and the rear end of the frame has a paper feed channel for connecting to the paper output end of a printer. A conveyor belt and a guide plate are located above the paper receiving platform on the frame. Initially, the paper receiving platform is in a first position. During operation, the paper receiving platform moves upward to a second position, where its upper surface is abutting against the lower surfaces of the conveyor belt and the guide plate. The conveyor belt transports paper from the paper feed channel exit to the paper receiving platform, and the guide plate limits the front end of the paper. The paper receiving and limiting mechanism provided by this utility model ensures that the paper is smoothly transported to the front end of the paper receiving platform without warping during transport, and that the front end of the paper is accurately limited.

Description

Technical Field

[0001] This utility model relates to the field of printing equipment technology, and more specifically, to a paper receiving and limiting mechanism. Background Technology

[0002] Currently, most printing devices on the market, such as laser printers and inkjet printers, are equipped with integrated paper trays or output trays. The main function of these trays is to receive and temporarily store printed paper from the printer's output port, preventing paper from scattering and ensuring continuous printing. However, current printing devices lack paper trays for sorting and organizing paper, leading to cumbersome paper sorting and causing significant inconvenience for users.

[0003] In the relevant prior art, patent application CN222757610U discloses a staggered paper delivery mechanism for a digital printer, used for stacking and organizing paper. It includes a frame, a liftable paper receiving platform, and a delivery roller. The delivery roller conveys the paper to the delivery platform. Baffle mechanisms are provided on the left, right, and front sides of the delivery platform for limiting and organizing the paper. However, in this existing paper delivery structure, the paper is only conveyed by the delivery roller at the rear of the frame. When the paper is long, the driving force of the delivery roller is insufficient to quickly and smoothly convey it to the front of the paper receiving platform. Furthermore, the paper is prone to warping and deformation after delivery, which is not conducive to flat stacking. Summary of the Invention

[0004] To overcome at least one of the defects in the prior art, this utility model provides a paper receiving limiting mechanism that can ensure that the paper is smoothly conveyed to the front end of the paper receiving platform, that the paper does not warp during the conveying process, and that the front end of the paper can be accurately limited.

[0005] The technical solution adopted by this utility model is as follows: a paper receiving limiting mechanism is provided, including a frame, a liftable paper receiving platform at the front end of the frame, and a paper feeding channel at the rear end of the frame for connecting with the paper output end of the printer. A conveyor belt and a guide plate are provided on the frame above the paper receiving platform. In the initial state, the paper receiving platform is located in a first position. In the working state, the paper receiving platform moves upward to a second position, and in the second position, the upper surface of the paper receiving platform is in contact with the lower surface of the conveyor belt and the guide plate. The conveyor belt is used to convey the paper from the paper feeding channel outlet to the paper receiving platform, and the guide plate is used to limit the front end of the paper.

[0006] Compared with the prior art, the paper receiving limiting mechanism of this utility model has the following advantages: In the paper receiving limiting mechanism structure of this utility model, a conveyor belt is added above the paper receiving platform. When the paper receiving platform rises to the paper receiving position, the conveyor belt abuts against the paper receiving platform to provide a stable conveying force for the paper. Even large-sized papers can be smoothly transferred to the front end of the paper receiving platform by the conveyor belt. Furthermore, since the conveyor belt is always pressed against the paper during the paper conveying process, it ensures that the paper will not warp during the conveying process. In addition, a baffle plate is also provided on the frame. When the paper receiving platform is raised to the paper receiving position, its upper surface abuts against the lower end surface of the baffle plate, which ensures that when the paper is horizontally conveyed to the paper receiving platform, the front end of the paper can be accurately limited by the baffle plate.

[0007] Furthermore, both ends of the baffle plate are vertically slidably connected to the two side plates of the frame. In the initial state, the lower end of the baffle plate is lower than the lower surface of the conveyor belt. In the working state, the paper receiving platform moves upward to abut against the lower surface of the baffle plate and drives the baffle plate to move synchronously to the second position. In this structure, the baffle plate can rise and fall freely. This arrangement better ensures that when the paper receiving platform rises to the second position, its upper surface can simultaneously abut against the conveyor belt and the lower surface of the baffle plate.

[0008] As an improvement, the conveyor belt includes multiple conveyor rubber bands, and rollers are provided between the two side plates at both ends of the frame. The frame is equipped with a conveyor motor for driving any of the rollers to rotate. The multiple conveyor rubber bands are arranged at intervals on the front and rear rollers, and an active channel is left between the upper and lower parts of the multiple conveyor rubber bands. The baffle plate is located in the active channel, and the lower end of the baffle plate is provided with a clearance groove at the position corresponding to each of the conveyor rubber bands.

[0009] In a further improvement, the left and right side plates of the frame are each provided with a fixed seat that can slide back and forth, and each of the two fixed seats is provided with a vertical slide rail. Both ends of the baffle plate are connected to lifting sliders, and the two lifting sliders slide and engage with the two vertical slide rails respectively.

[0010] In a further improvement, pulleys are provided at the front and rear ends of the left and right side plates of the frame, and a transmission belt is installed between the two pulleys on both sides of the frame. The two fixed seats are respectively connected to the two transmission belts, and a drive motor is provided on the frame to drive the two transmission belts to rotate synchronously.

[0011] In a further improvement, the drive motor is fixed to the rear end of the left side plate of the frame, and the motor shaft of the drive motor is connected to the pulley at the rear end of the left side plate of the frame. A drive shaft is rotatably connected between the front ends of the left and right side plates of the frame, and the two pulleys at the front end of the frame are respectively mounted on both ends of the drive shaft.

[0012] In a further improvement, guide rods extending forward and backward are provided on the inner walls of the left and right side plates of the frame, and guide sliders are slidably mounted on both guide rods. The two fixed seats are respectively connected to the two guide sliders.

[0013] Other improvements and advantages of this invention will be set forth in the detailed description that follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention can be realized and obtained through the structures particularly pointed out in the description and drawings. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the paper receiving and limiting mechanism of this utility model; Figure 2 This is a partial structural view of the paper receiving and limiting mechanism of this utility model from another angle; Figure 3 This is a partial cross-sectional view of the paper receiving and limiting mechanism of this utility model; Figure 4 This is a partial cross-sectional view of the paper receiving and limiting mechanism of this utility model from another angle; Figure 5 This is a partial structural view of the paper receiving and limiting mechanism of this utility model from another angle.

[0015] Explanation of reference numerals in the attached figures: 1. Frame; 2. Paper receiving platform; 3. Paper stop; 4. Conveyor elastic band; 5. Roller; 6. Clearance groove; 7. Fixed base; 8. Vertical slide rail; 9. Lifting slider; 10. Pulley; 11. Transmission belt; 12. Drive motor; 13. Drive shaft; 14. Guide rod; 15. Guide slider; 16. Sprocket; 17. Chain; 18. Lifting motor; 19. Rotary shaft; 20. Optical axis guide rail; 21. Clearance groove; 22. Lifting base. Detailed Implementation

[0016] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of this application and are not intended to limit the scope of protection of the embodiments of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0017] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "fixed" and "connected" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0018] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0019] See Figures 1-5 As shown in the figure, this application discloses a paper receiving limiting mechanism, including a frame 1. The front end of the frame 1 is provided with a receiving cavity, and a paper receiving platform 2 for receiving paper is provided in the receiving cavity, which can be raised and lowered, and the front end of the paper receiving platform 2 extends out of the receiving cavity. The rear end of the frame 1 is provided with a paper feeding channel for connecting to the paper output end of the printer, and the outlet of the paper feeding channel is connected to the receiving cavity. A conveyor belt and a baffle plate 3 are provided on the frame 1 above the paper receiving platform 2. In the initial state, the paper receiving platform 2 is located in the first position. In the working state, the paper receiving platform 2 moves upward to the second position (paper receiving position), and in the second position, the upper end surface of the paper receiving platform 2 is in contact with the lower end surface of the conveyor belt and the baffle plate 3. The conveyor belt is used to convey the paper from the paper feeding channel outlet to the paper receiving platform 2, and the front end of the paper is limited by the baffle plate 3. Compared to existing technologies, this structure adds a conveyor belt above the paper receiving platform 2. The conveyor belt can smoothly transfer large-sized papers to the front end of the paper receiving platform 2. Furthermore, since the conveyor belt is always pressed against the paper during the paper transfer process, it ensures that the paper will not warp during the transfer process.

[0020] In a preferred embodiment, the guide plate 3 is configured to be freely movable. Initially, the guide plate 3 falls to its lowest point under its own weight, with its lower end below the lower surface of the conveyor belt. At the start of operation, the paper receiving platform 2 rises. As the platform moves upwards until it contacts the lower surface of the guide plate 3 and continues to move, it moves the guide plate 3 synchronously to a set position, at which point its upper surface contacts the lower surface of the conveyor belt. This configuration better ensures that when the paper receiving platform 2 rises to the second position, its upper surface simultaneously contacts both the conveyor belt and the lower surface of the guide plate 3, thus ensuring smooth paper transport while also limiting the front end of the paper.

[0021] More specifically, in the above structure, during the paper receiving process, when the first sheet of paper is conveyed to the receiving platform 2, the lower surface of the conveyor belt adheres to the upper surface of the receiving platform 2 to form a conveying driving force until the front end of the first sheet of paper abuts against the baffle plate 3; when the second sheet of paper is conveyed, the lower surface of the conveyor belt adheres to the upper surface of the first sheet of paper to form a conveying driving force, and the receiving platform 2 can slowly descend according to the set displacement, and so on, to realize the conveying and stacking of paper. Each sheet of paper can be conveyed further by the action of the conveyor belt, and the conveying process is always kept flat.

[0022] In this embodiment, the conveyor belt includes multiple conveyor rubber bands 4, and rollers 5 are provided between the two side plates at both ends of the frame 1. The frame 1 is equipped with a conveyor motor for driving any roller 5 to rotate. Specifically, the conveyor motor is on the inner wall of the left side plate of the frame 1, and the output shaft of the conveyor motor passes through the left side plate of the frame 1. One end of the output shaft of the conveyor motor passing through the left side plate is connected to a drive wheel, and the left end of the roller 5 at the rear end of the frame 1 is connected to a driven wheel. The drive wheel and the driven wheel are connected by a drive belt. In addition, each roller 5 has concave arc-shaped grooves spaced along its length on its outer wall. Multiple conveying rubber bands 4 are spaced apart in the corresponding arc-shaped grooves on the front and rear roller 5, and there is a movable channel between the upper and lower parts of the multiple conveying rubber bands 4. The baffle plate 3 is located in the movable channel, and the lower end of the baffle plate 3 is provided with a clearance groove 21 at the position corresponding to each conveying rubber band 4. In this way, when the baffle plate 3 is at the lowest point in the initial state, the lower end of the baffle plate 3 is lower than the lower surface of the conveying rubber band 4. In the working state, the paper receiving platform 2 moves upward until it pushes the baffle plate 3 to move upward synchronously to the set position (paper receiving position), so that the conveying rubber band 4 and the upper surface of the paper receiving platform 2 can be in contact to realize paper conveying. Furthermore, the lower end face of the baffle plate 3 is in contact with the upper surface of the paper receiving platform 2 to ensure that the front end of the paper can be limited by the baffle plate 3 after conveying.

[0023] More specifically, in the above structure, adjusting rollers 5 are respectively provided between the left and right side plates at the front and rear ends of the frame 1. The two adjusting rollers 5 are used to adjust the position of the lower half of each conveying rubber band 4, so that the upper half and lower half of each conveying rubber band 4 can form a moving channel of the required height, ensuring that the baffle plate 3 can move up and down without affecting the normal operation of the conveying rubber band 4.

[0024] In this embodiment, fixed seats 7 that can slide back and forth are provided on both the left and right side plates of the frame 1. Vertical slide rails 8 are provided on both fixed seats 7. Lifting sliders 9 are connected to both ends of the paper stop 3. The two lifting sliders 9 are slidably engaged on the two vertical slide rails 8 respectively. The paper stop 3 achieves smooth lifting and lowering movement through the lifting sliders 9 and the vertical slide rails 8. In addition, the fixed seats 7 can move back and forth to adjust the front position of the paper stop 3 for use in limiting the front end of different sizes of paper.

[0025] More specifically, pulleys 10 are provided at the front and rear ends of the left and right side plates of the frame 1, and transmission belts 11 are installed between the two pulleys 10 on both sides of the frame 1. Two fixed seats 7 are respectively connected to the two transmission belts 11. The frame 1 is provided with a drive motor 12 for driving the two transmission belts 11 to rotate synchronously. The two transmission belts 11 drive the baffle plate 3 to move back and forth, ensuring that the baffle plate 3 moves smoothly.

[0026] In this embodiment, as a preferred structural form, the drive motor 12 is fixed to the rear end of the left side plate of the frame 1, and the motor shaft of the drive motor 12 is connected to the corresponding pulley 10 at the rear end of the left side plate of the frame 1. A drive shaft 13 is rotatably connected between the front ends of the left and right side plates of the frame 1, and the two pulleys 10 at the front end of the frame 1 are respectively mounted on both ends of the drive shaft 13. The drive motor 12 drives the pulley 10 at the left rear end of the frame 1 to rotate. Under the action of the transmission belt 11 on the corresponding side, the pulley 10 at the left front rotates synchronously, thereby driving the drive shaft 13 to rotate, driving the pulley 10 at the right front to rotate, and under the action of the transmission belt 11 on the right side, driving the pulley 10 at the right rear to rotate. That is, only one drive motor 12 is needed to realize the synchronous operation of the two transmission belts 11, driving the two fixed seats 7 to move back and forth, thereby driving the baffle plate 3 to move back and forth.

[0027] In some other embodiments, the drive motor 12 may also be located on the side plate at the front end of the frame 1 to drive one of the pulleys 10 at the front end to rotate, and the drive shaft 13 is used to connect the two pulleys 10 at the rear end of the frame 1.

[0028] On the other hand, in the above structure, guide rods 14 extending forward and backward are provided on the inner walls of the left and right side plates of the frame 1. Guide sliders 15 are slidably mounted on the two guide rods 14. The two fixed seats 7 are respectively connected to the two guide sliders 15, which further ensures the straightness of the two fixed seats 7 when they move forward and backward, so that the paper stop 3 can also be horizontal after it moves, thus achieving accurate positioning of the front end of the paper.

[0029] In another aspect, in this embodiment, the lifting drive structure of the paper receiving platform 2 includes four sprockets 16, two chains 17, and a lifting motor 18. Two rotating shafts 19 are arranged vertically and horizontally between the left and right side plates of the frame 1, that is, the two ends of the two rotating shafts 19 protrude outward from the two side walls of the left and right side plates of the frame 1, respectively. The four sprockets 16 are respectively connected to the two ends of the two rotating shafts 19 that protrude outward from the left and right side plates of the frame 1, so that sprocket groups distributed vertically are formed on the left and right sides of the frame 1, respectively. The two chains 17 are respectively connected to the two sprockets 16 at the left and right ends of the frame 1. The left and right ends of the paper receiving platform 2 are respectively connected to the two chains 17. The lifting motor 18 is used to drive one of the rotating shafts 19 to rotate, thereby driving the two chains 17 to rotate synchronously, and finally realizing the smooth lifting of the paper receiving platform 2.

[0030] In this embodiment, further, vertically extending optical axis guide rails 20 are provided on the outer walls of the left and right side plates of the frame 1. Vertically extending clearance slots 21 are respectively provided on the left and right side plates, located on both sides of the receiving cavity. Lifting bases 22 are connected to the left and right ends of the paper receiving platform 2. The outer ends of the two lifting bases 22 slide through the two corresponding clearance slots 21, and the outer ends of the two lifting bases 22 extending out of the clearance slots 21 are respectively connected to the sliders of the two optical axis guide rails 20. The optical axis guide rails 20 are designed to effectively ensure the stability of the lifting platform's movement. The sliders of the two optical axis guide rails 20 are respectively connected to two chains 17. In other embodiments, the two lifting bases 22 can also be directly connected to the two chains 17 through the outer ends extending out of the clearance slots 21, and the rotation of the chains 17 drives the paper receiving platform 2 to rise and fall.

[0031] In the description of this application, the references to terms such as "this embodiment," "some embodiments," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0032] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A paper receiving limiting mechanism, comprising a frame (1), a front end of the frame (1) is provided with a liftable paper receiving platform (2), a rear end of the frame (1) is provided with a paper receiving channel for connecting with a paper outlet end of a printer, characterized in that: The frame (1) is provided with a conveyor belt and a baffle plate (3) above the paper receiving platform (2). In the initial state, the paper receiving platform (2) is located in the first position. In the working state, the paper receiving platform (2) moves upward to the second position, and in the second position, the upper end face of the paper receiving platform (2) is in contact with the lower end face of the conveyor belt and the baffle plate (3). The conveyor belt is used to convey the paper from the paper feeding channel outlet to the paper receiving platform (2), and the baffle plate (3) is used to limit the front end of the paper.

2. The paper contact limiting mechanism according to claim 1, characterized in that: The two ends of the baffle plate (3) are respectively slidably connected to the two side plates of the frame (1) in a vertical direction. In the initial state, the lower end of the baffle plate (3) is lower than the lower end face of the conveyor belt. In the working state, the paper receiving platform (2) moves upward to abut against the lower end face of the baffle plate (3) and drives the baffle plate (3) to move synchronously to the second position.

3. The paper contact position limiting mechanism according to claim 1 or 2, characterized in that: The conveyor belt includes multiple conveyor rubber bands (4), and rollers (5) are provided between the two side plates at the front and rear ends of the frame (1). The frame (1) is provided with a conveyor motor for driving any of the rollers (5) to rotate. The multiple conveyor rubber bands (4) are arranged at intervals on the front and rear rollers (5), and an active channel is left between the upper and lower parts of the multiple conveyor rubber bands (4). The baffle plate (3) is located in the active channel, and the lower end of the baffle plate (3) is provided with a clearance groove (24) at the position corresponding to each of the conveyor rubber bands (4).

4. The paper contact limiting mechanism according to claim 3, wherein: The frame (1) is provided with a fixed seat (7) that can slide back and forth on both the left and right side plates. Each of the two fixed seats (7) is provided with a vertical slide rail (8). Both ends of the baffle plate (3) are connected to lifting sliders (9). The two lifting sliders (9) are respectively slidably engaged on the two vertical slide rails (8).

5. The paper contact limiting mechanism according to claim 4, wherein: The frame (1) has pulleys (10) at the front and rear ends of the left and right side plates respectively. A transmission belt (11) is installed between the two pulleys (10) on both sides of the frame (1). The two fixed seats (7) are respectively connected to the two transmission belts (11). The frame (1) is equipped with a drive motor (12) for driving the two transmission belts (11) to rotate synchronously.

6. The paper contact limiting mechanism according to claim 5, wherein: The drive motor (12) is fixed at the rear end of the left side plate of the frame (1), and the motor shaft of the drive motor (12) is connected to the pulley (10) at the rear end of the left side plate of the frame (1). A drive shaft (13) is rotatably connected between the front ends of the left and right side plates of the frame (1), and the two pulleys (10) at the front end of the frame (1) are respectively mounted on the two ends of the drive shaft (13).

7. The paper stop mechanism of claim 5, wherein: The inner walls of the left and right side plates of the frame (1) are provided with guide rods (14) extending forward and backward. Guide sliders (15) are slidably mounted on the two guide rods (14). The two fixed seats (7) are respectively connected to the two guide sliders (15).

Images