Conveying pressing belt mechanism of paper conveying machine

Abstract

The utility model discloses a conveying belt pressing mechanism of a paper conveyor, which comprises a rack, a conveying frame and a plurality of belt pressing components arranged on the conveying frame, a sliding component for the conveying frame to horizontally reciprocate along the conveying direction of paper is arranged between the rack and the conveying frame, and a control component with a self-locking function is arranged on the rack. A linkage component which is controlled by the control assembly and used for driving the conveying frame to move is arranged between the control assembly and the conveying frame. The pressing device has the advantages that the pressing position can be conveniently and accurately adjusted, and therefore smoothness and stability of paper in the conveying process are guaranteed.

Description

Technical Field

[0001] The utility model relates to a sheet feeder, in particular to a conveying and pressing belt mechanism of a sheet feeder. Background Art

[0002] Sheet feeders are widely used in single-sheet printing machinery and equipment such as screen printing machines, intaglio printing machines, full-automatic die-cutting machines, and paper laminating machines. A paper stack table for placing a paper stack is provided at the entrance section, and the sheets are sequentially separated and fed into the sheet feeding table by a feeder head. As the sheets are continuously output, the paper stack monitoring system of the sheet feeder continuously raises the height of the paper stack to ensure continuous sheet feeding.

[0003] To ensure the stable transmission of the sheets on the sheet feeding table, the existing sheet feeders are provided with a conveying and pressing belt mechanism above the sheet feeding table. The conveying and pressing belt mechanism presses the sheets against the sheet feeding table to increase the friction between the sheets and the sheet feeding table, so that the sheet feeding table drives the sheets to achieve stable transmission. The existing conveying and pressing belt mechanism includes a conveying frame and a plurality of pressing belt assemblies arranged on the conveying frame. The pressing belt assembly includes a pressing rod, a plurality of paper pressing wheels slidably arranged on the pressing rod, a locking member for adjusting and fixing each paper pressing wheel, and a pressing belt sleeved on the paper pressing wheels. Since the sheets in transmission have different sizes, in order to ensure the smooth transmission of sheets of different sizes, it is necessary to adjust the pressing position of the conveying and pressing belt mechanism according to the different sheet sizes. If the existing conveying and pressing belt mechanism is to adjust the pressing position, it is necessary to adjust the positions of the paper pressing wheels one by one to achieve the overall change of the pressing position. This results in a large amount of adjustment work for the existing conveying and pressing belt mechanism, cumbersome operation, and inability to accurately adjust the position of each paper pressing wheel, thus affecting the smooth stability of the sheets in transmission. Based on the above problems, this improvement came into being. Content of the Utility Model

[0004] The purpose of the utility model is to provide a conveying and pressing belt mechanism of a sheet feeder, which can conveniently and accurately adjust the pressing position to ensure the smooth stability of the sheets in transmission.

[0005] The above technical purpose of the utility model is achieved through the following technical solutions: A conveying and pressing belt mechanism of a sheet feeder includes a frame, a conveying frame, and a plurality of pressing belt assemblies arranged on the conveying frame. A sliding assembly for the conveying frame to horizontally reciprocate along the paper transmission direction is provided between the frame and the conveying frame. A control assembly with a self-locking function is provided on the frame. A linkage member controlled by the control assembly to drive the conveying frame to move is provided between the control assembly and the conveying frame.

[0006] By adopting the above technical solution, a sliding component is provided to enable the conveying frame to perform horizontal reciprocating motion along the paper transmission direction on the rack. The control component drives the conveying frame through a linkage member, thereby changing the position of the conveying frame to achieve overall adjustment of the pressing position of the conveying pressure belt mechanism, so as to adapt to the transmission of papers of different sizes. And the self-locking characteristic of the control component can be used to realize real-time positioning of the position of the adjusted conveying frame, so as to achieve convenient and accurate adjustment of the pressing position and ensure the smooth stability of the paper during transmission.

[0007] It is further set that: the sliding component includes at least two groups of limiting pulley groups arranged on the rack. The conveying frame is slidably matched with each group of limiting pulley groups and is guided by the limiting pulley groups to perform horizontal reciprocating motion along the paper transmission direction. Each group of the limiting pulley groups is composed of a plurality of limiting pulleys.

[0008] By adopting the above technical solution, the limiting pulley structure effectively limits the sliding direction of the conveying frame while realizing the sliding of the conveying frame, so as to ensure the movement direction and movement accuracy of the conveying frame.

[0009] It is further set that: the linkage member includes a linkage chain that moves with the conveying frame and extends along the movement direction of the conveying frame, a linkage sprocket rotatably arranged on the rack and engaged with the linkage chain, and a tensioning and fixing component for tensioning and fixing the linkage chain.

[0010] By adopting the above technical solution, the tensioning and fixing component provides fixed limit for the linkage chain along its length direction, so that the linkage chain can move synchronously with the conveying frame. Then, by rotating the linkage sprocket, the linkage chain and the conveying frame can be driven to move synchronously, with a simple structure and lower production cost.

[0011] It is further set that: the tensioning and fixing component includes a front fixing pin arranged at one end of the linkage chain, a rear fixing pin arranged at the other end of the linkage chain, a locking component for connecting the rear fixing pin and the conveying frame, and a tensioning structure formed between the rear fixing pin and the conveying frame for guiding the rear fixing pin to move away from the front fixing pin. The front fixing pin and the rear fixing pin are both inserted into the chain holes of the linkage chain, and the front fixing pin is fixed to the conveying frame.

[0012] By adopting the above technical solution, while the locking component locks and fixes the rear fixing pin, it cooperates with the tensioning structure to drive the rear fixing pin to move away from the front fixing pin, so as to realize the dual operations of tensioning and fixing the linkage chain, ensuring the structural feasibility and structural reliability of the fixed linkage chain.

[0013] It is further set that: the tensioning structure includes a tensioning inclined surface formed on the rear fixing pin and inclined on the side opposite to the front fixing pin, and a mating inclined surface formed on the conveying frame and mating with the tensioning inclined surface.

[0014] By adopting the above technical solution, the cooperation between the tensioning inclined surface and the mating inclined surface is used to change the direction of the acting force, so as to realize the movement of the rear fixing pin away from the front fixing pin.

[0015] It is further set that: the locking assembly includes a kidney-shaped hole provided between the rear fixing pin and the conveying frame, a locking bolt passing through the two kidney-shaped holes, and a locking nut threadedly connected to the locking bolt.

[0016] By adopting the above technical solution, the cooperation between the locking bolt and the locking nut is used to realize the locking and fixing of the rear fixing pin on the conveying frame, and the provided kidney-shaped hole is used to compensate for the tensioning displacement stroke of the rear fixing pin during the locking process, so as to avoid structural interference and ensure the feasibility of the structure.

[0017] It is further set that: the control assembly includes a worm gear rotating with the linkage sprocket and a worm rotatably arranged on the frame and meshing with the worm gear.

[0018] By adopting the above technical solution, the cooperation between the worm gear and the worm can form a self-locking position while realizing the drive of the linkage sprocket, with a simple structure and convenient adjustment.

[0019] In summary, the present utility model has the following beneficial effects: the present utility model can realize the convenient and accurate adjustment of the pressing position, so as to ensure the smooth stability of the paper during transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic structural diagram of the embodiment;

[0021] Figure 2 It is a partial structural diagram of the embodiment;

[0022] Figure 3 It is another partial structural diagram of the embodiment;

[0023] Figure 4 It is a partial sectional view of the embodiment.

[0024] In the figure: 1, frame; 2, conveying frame; 3, several pressing belt assemblies; 4, limiting pulley group; 5, control assembly; 51, worm gear; 52, worm; 6, linkage member; 61, linkage chain; 62, linkage sprocket; 63, front fixing pin; 64, rear fixing pin; 65, locking assembly; 651, kidney-shaped hole; 652, locking bolt; 653, locking nut; 66, tensioning structure; 661, tensioning inclined surface; 662, mating inclined surface. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The present utility model will be further described in detail below with reference to the accompanying drawings.

[0026] Reference Figures 1 to 4 , a paper feeding conveyor belt pressing mechanism, comprising a frame 1, a conveying frame 2, and a plurality of belt pressing assemblies 3 arranged on the conveying frame 2. A sliding assembly for horizontally reciprocating movement of the conveying frame 2 along the paper transmission direction is provided between the frame 1 and the conveying frame 2. A control assembly 5 with a self-locking function is provided on the frame 1. A linkage member 6 controlled by the control assembly 5 and used to drive the movement of the conveying frame 2 is provided between the control assembly 5 and the conveying frame 2. The belt pressing assembly 3 includes a plurality of pressing rods installed on the conveying frame 2, a plurality of pressing wheels installed on the pressing rods, and a conveyor belt sleeved on the plurality of pressing wheels, and one of the pressing wheels is a tensioning wheel.

[0027] The sliding assembly includes at least two groups of limiting pulley sets 4 arranged on the frame 1. The conveying frame 2 is slidably matched with each group of limiting pulley sets 4, and the conveying frame 2 is guided by the limiting pulley sets 4 to horizontally reciprocate along the paper transmission direction. Each group of limiting pulley sets 4 is composed of a plurality of limiting pulleys, and each limiting pulley is rotatably arranged on the frame 1.

[0028] The linkage member 6 includes a linkage chain 61 that moves with the conveying frame 2 and extends along the movement direction of the conveying frame 2, a linkage sprocket 62 rotatably arranged on the frame 1 and meshed with the linkage chain 61, and a tensioning and fixing assembly for tensioning and fixing the linkage chain 61. The tensioning and fixing assembly includes a front fixing pin 63 arranged at one end of the linkage chain 61, a rear fixing pin 64 arranged at the other end of the linkage chain 61, a locking assembly 65 for connecting the rear fixing pin 64 and the conveying frame 2, and a tensioning structure 66 formed between the rear fixing pin 64 and the conveying frame 2 for guiding the rear fixing pin 64 to move away from the front fixing pin 63. Both the front fixing pin 63 and the rear fixing pin 64 are inserted into the chain holes of the linkage chain 61, and the front fixing pin 63 is fixed to the conveying frame 2.

[0029] The tensioning structure 66 includes a tensioning inclined surface 661 formed on the rear fixing pin 64 and inclined on the side opposite to the front fixing pin 63, and a matching inclined surface 662 formed on the conveying frame 2 and matching the tensioning inclined surface 661. The locking assembly 65 includes kidney-shaped holes 651 opened on the rear fixing pin 64 and the conveying frame 2, a locking bolt 652 passing through the two kidney-shaped holes 651, and a locking nut 653 threadedly connected to the locking bolt 652.

[0030] The linkage sprocket 62 is rotatably arranged on the frame 1 through a rotating shaft, and the linkage sprocket 62 is fixedly connected to the rotating shaft. The control assembly 5 includes a worm gear 51 fixedly arranged on the rotating shaft and rotating with the linkage sprocket 62, and a worm 52 rotatably arranged on the frame 1 and meshed with the worm gear 51.

[0031] This specific embodiment is only an interpretation of the present utility model, and it does not limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment that do not contribute creatively as needed, but as long as it is within the scope of the claims of the present utility model, it is protected by the patent law.

Claims

1. A paper feeding machine conveying pressure belt mechanism, comprising a frame (1), a conveying frame (2), and a plurality of pressure belt assemblies (3) arranged on the conveying frame (2), characterized in that: A sliding component for the horizontal reciprocating movement of the conveying frame (2) along the paper transmission direction is provided between the frame (1) and the conveying frame (2). A control component (5) with a self-locking function is provided on the frame (1). A linkage member (6) controlled by the control component (5) to drive the movement of the conveying frame (2) is provided between the control component (5) and the conveying frame (2).

2. The paper feeding conveyor belt mechanism according to claim 1, wherein: The sliding component includes at least two groups of limiting pulley sets (4) provided on the frame (1). The conveying frame (2) is slidably engaged with each group of limiting pulley sets (4), and the conveying frame (2) is guided by the limiting pulley sets (4) to move horizontally back and forth along the paper transmission direction. Each group of the limiting pulley sets (4) is composed of a plurality of limiting pulleys.

3. The paper feeding conveyor belt pressing mechanism according to claim 1, characterized in that: The linkage member (6) includes a linkage chain (61) that moves with the conveying frame (2) and extends along the movement direction of the conveying frame (2), a linkage sprocket (62) rotatably provided on the frame (1) and engaged with the linkage chain (61), and a tensioning and fixing component for tensioning and fixing the linkage chain (61).

4. The paper feeding conveyor belt mechanism according to claim 3, characterized in that: The tensioning and fixing component includes a front fixing pin (63) provided at one end of the linkage chain (61), a rear fixing pin (64) provided at the other end of the linkage chain (61), a locking component (65) for connecting the rear fixing pin (64) and the conveying frame (2), and a tensioning structure (66) formed between the rear fixing pin (64) and the conveying frame (2) for guiding the rear fixing pin (64) to move away from the front fixing pin (63). The front fixing pin (63) and the rear fixing pin (64) are both inserted into the chain holes of the linkage chain (61), and the front fixing pin (63) is fixed to the conveying frame (2).

5. The paper feeding conveyor belt mechanism according to claim 4, characterized in that: The tensioning structure (66) includes a tensioning inclined surface (661) formed on the rear fixing pin (64) and inclined away from the side of the front fixing pin (63), and a mating inclined surface (662) formed on the conveying frame (2) and mating with the tensioning inclined surface (661).

6. The paper feeding conveyor belt pressing mechanism according to claim 4, characterized in that: The locking component (65) includes a kidney-shaped hole (651) provided between the rear fixing pin (64) and the conveying frame (2), a locking bolt (652) passing through the two kidney-shaped holes (651), and a locking nut (653) threadedly connected to the locking bolt (652).

7. The paper feeding conveyor belt pressing mechanism according to claim 3, characterized in that: The control component (5) includes a worm gear (51) that rotates with the linkage sprocket (62), and a worm (52) rotatably provided on the frame (1) and engaged with the worm gear (51).

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