A paper feed mechanism for a printer paper hopper

Abstract

The utility model discloses a kind of paper feeding mechanism of printing machine paper bin, it is related to paper conveying equipment field, and this kind of paper feeding mechanism of printing machine paper bin includes support, support includes two parallelly arranged roof beam and the bottom bracket of the roof beam bottom, multiple conveying rollers are rotationally installed with equal interval between the two roof beams along its length direction through bearing;This kind of paper feeding mechanism of printing machine paper bin is driven by setting single guide rod air cylinder to load plate, and the structure of the two driving rods of symmetrical hinged synchronous belt drive both sides alignment plate movement is cooperated, replace traditional double-cylinder independent drive mode, ensure that the two alignment plate expansion or gather action is completely synchronous, solve the paperboard alignment deviation problem caused by poor synchronism, improve paper feeding precision and printing quality.

Description

Technical Field

[0001] This utility model relates to the field of paper conveying equipment, and in particular to a paper feeding mechanism for a printing press paper hopper. Background Technology

[0002] The printing press paper hopper uses a robotic arm or other paper-picking structure to place stacked corrugated paper onto a conveying device. The paper is then conveyed by the conveying device. To ensure that the paper is centered and aligned at the end of the conveying process, two alignment plates are driven by dual cylinders to align the paperboard.

[0003] However, independent control of dual cylinders is prone to poor synchronization of the two alignment plates due to air pressure fluctuations and cylinder differences, resulting in asynchronous expansion / convergence, causing paperboard alignment deviation, affecting paper feeding accuracy and printing quality. There is an urgent need to optimize the drive and connection structure to solve the synchronization problem. Utility Model Content

[0004] To overcome the shortcomings of existing technologies, the purpose of this utility model is to provide a paper feeding mechanism for a printing press paper hopper, which solves the problems of poor synchronization and paperboard alignment deviation in the existing dual-cylinder driven alignment plate structure of paper conveying equipment.

[0005] To address the problems in the existing technology, the technical solution of this utility model is as follows:

[0006] A paper feeding mechanism for a printing press paper hopper includes a support frame. Multiple conveying rollers are rotatably mounted at equal intervals between two top beams of the support frame. Two alignment plates are symmetrically arranged between the two top beams, and the two alignment plates are slidably connected to the two top beams respectively. An opening and closing assembly is installed on the base frame of the support frame. The opening and closing assembly is used to simultaneously drive the two alignment plates to expand or converge. The two alignment plates are respectively connected to the two moving ends of the opening and closing assembly through an adjustable structure, so as to realize the adjustable connection between the alignment plates and the moving ends of the opening and closing assembly.

[0007] Optionally, the alignment plate has inclined structures at both ends, and the inclined structures at both ends are inclined to the side away from the opposite alignment plate to form an inclined transition shape. The middle of the opposite side of the two alignment plates is symmetrically fixed with a sliding rod. The axis of the sliding rod is parallel to the axis of the conveying roller. The sliding rod is slidably connected to the corresponding top beam through a sliding hole. The bottom of the alignment plate has several arc-shaped grooves along its length direction. Each arc-shaped groove is adapted and nested with the corresponding conveying roller. The conveying roller fits against the inner wall of the arc-shaped groove.

[0008] Optionally, the opening and closing assembly includes a guide rod cylinder fixed on the base frame and arranged longitudinally. A carrier plate is fixed to the extended end of the guide rod cylinder. Two drive rods are symmetrically hinged to the top surface of the carrier plate. The two drive rods are arranged in an inverted V-shape. Connecting parts are hinged to the upper ends of the drive rods. Two sets of sliding rods on both sides are respectively connected to the two connecting parts on both sides.

[0009] Optionally, the upper end of the connector has two symmetrically formed insertion holes, and the slide rod is inserted into the insertion holes. The adjustable structure includes two connecting blocks symmetrically fixed on one side of the connector opposite to the opposite side. The two connecting blocks are located between the two insertion holes on the connector. Bolts are threadedly connected to the connecting blocks through threaded holes. The ends of the bolts face the outer wall of the slide rod and abut against the outer wall of the slide rod. The bolts include rubber blocks at their ends, and the bolts abut against the outer wall of the slide rod.

[0010] Compared with the prior art, the advantages of this utility model are as follows:

[0011] 1. This utility model replaces the traditional dual-cylinder independent drive method by setting a single guide rod cylinder to drive the carrier plate, and cooperating with two symmetrically hinged drive rods to synchronously drive the alignment plates on both sides. This ensures that the expansion or convergence of the two alignment plates is completely synchronized, solves the problem of paperboard alignment deviation caused by poor synchronization, and improves paper feeding accuracy and printing quality.

[0012] 2. This utility model uses the insertion hole on the connector to connect with the slide rod, combined with the adjustable structure of the bolt on the connecting block abutting the slide rod. By adjusting the position of the slide rod in the connector, the distance between the two alignment plates can be changed, so that the distance between the alignment plates can be adapted to the width of the paper. Furthermore, by adjusting the left and right positions of the two alignment plates on the conveyor roller, the alignment position of the paper on the conveyor roller can be flexibly adjusted, not limited to the center position, thus achieving adaptability to different end printing equipment and improving the versatility of the equipment. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the alignment plate structure of this utility model.

[0015] Figure 3 This utility model Figure 2 Enlarged view of point A.

[0016] Figure 4 This is a schematic diagram of the guide rod cylinder structure of this utility model.

[0017] Reference numerals: 1. Support; 101. Top beam; 102. Base frame; 2. Alignment plate; 201. Arc groove; 202. Inclined structure; 3. Slide rod; 4. Guide rod cylinder; 5. Carrier plate; 6. Drive rod; 7. Connector; 701. Insertion hole; 8. Connecting block; 9. Bolt; 10. Rubber block; 11. Conveying roller. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] Please see Figures 1 to 4 This embodiment provides a paper feeding mechanism for a printing press paper hopper, including a support 1. The support 1 includes two parallel top beams 101 and a base frame 102 connecting the bottom of the top beams 101. Multiple conveying rollers 11 are rotatably mounted at equal intervals between the two top beams 101 along their length direction via bearings. The axial direction of the conveying rollers 11 is perpendicular to the length direction of the top beams 101. The rotation of the conveying rollers 11 enables the smooth conveying of corrugated paper, providing a basic carrier for paper transport. The conveying rollers 11 can be driven by setting a chain and sprocket between the ends of adjacent conveying rollers 11. A motor drives one conveying roller 11 to rotate, thereby driving all the conveying rollers 11 to rotate synchronously. This is a mature existing technology, so it is not shown in the figure and will not be described in detail here.

[0020] Two alignment plates 2 are symmetrically arranged between the two top beams 101. The alignment plates 2 are located above the conveyor rollers 11. The length direction of the alignment plates 2 is perpendicular to the axial direction of the conveyor rollers 11. Slide rods 3 are symmetrically fixed in the middle of the opposite side of the two alignment plates 2. The axial direction of the slide rods 3 is parallel to the axial direction of the conveyor rollers 11. The end of the slide rod 3 away from the alignment plate 2 is slidably connected to the top beam 101 at the corresponding position through a sliding hole. Through the guiding effect of the slide rods 3 and the sliding holes, the alignment plates 2 are kept stable during the sliding process, providing a precise lateral adjustment basis for cardboard alignment.

[0021] The bottom of the alignment plate 2 has several arc-shaped grooves 201 along its length. Each arc-shaped groove 201 is positioned directly opposite a conveyor roller 11, and the curvature of the arc-shaped groove 201 matches the curvature of the outer wall of the conveyor roller 11. The conveyor roller 11 fits against the inner wall of the arc-shaped groove 201. This allows the alignment plate 2 to be supported by the conveyor roller 11 when sliding, ensuring the stability of the alignment plate 2's movement and preventing paper shifting caused by gaps between the alignment plate 2 and the conveyor roller 11, thus enhancing the overall compactness of the structure.

[0022] Meanwhile, the alignment plate 2 is provided with inclined structures 202 at both ends. The inclined structures 202 at both ends are inclined to the side away from the opposite alignment plate 2, forming an inclined transition shape. The inclined structure 202 plays a guiding role when the paper enters the alignment area, avoiding the rigid collision between the edge of the paper and the end of the alignment plate 2, which would cause wrinkles or displacement, and improving the smoothness of the paper entering the alignment process.

[0023] A longitudinally arranged guide rod cylinder 4 is fixed on the base frame 102. The extended end of the guide rod cylinder 4 is vertically positioned and fixed with a carrier plate 5. Two drive rods 6 are symmetrically hinged to the top surface of the carrier plate 5. The two drive rods 6 are distributed in an inverted V-shape, and their upper ends are hinged to connectors 7. The ends of the sliding rods 3 of the two alignment plates 2 away from the alignment plates 2 are respectively connected to the connectors 7 on both sides. When the guide rod cylinder 4 drives the carrier plate 5 to move vertically, the carrier plate 5 drives the two drive rods 6 to swing synchronously. The change in the angle of the drive rods 6 pushes the connectors 7 to move laterally, thereby driving the sliding rods 3 to slide along the sliding holes, ultimately realizing the synchronous expansion or convergence of the two alignment plates 2. This single-cylinder driven linkage structure eliminates the synchronization defects caused by air pressure fluctuations and cylinder differences when the traditional dual-cylinder independent control is used, ensuring that the two alignment plates 2 move completely in unison, fundamentally solving the problem of paperboard alignment deviation and significantly improving paper feeding accuracy.

[0024] As for determining the extension time of the guide rod cylinder 4, it is determined by a vision inspection device. The vision inspection device obtains the paper position, and when the paper reaches between the two alignment plates 2, it determines that the paper is in place and sends a signal to the controller. The controller then controls the guide rod cylinder 4 to extend to align the paper. The vision inspection device is a mature existing technology and will not be elaborated here.

[0025] The upper end of the connector 7 has two symmetrical insertion holes 701. The end of the slide rod 3 away from the alignment plate 2 is inserted into the insertion hole 701. Two connecting blocks 8 are symmetrically fixed on the side of the connector 7 opposite to the opposite side of the connector 7. The two connecting blocks 8 are located between the two insertion holes 701. The connecting blocks 8 have threaded holes, and bolts 9 are threaded into the threaded holes. The end of the bolt 9 faces the outer wall of the slide rod 3, and a rubber block 10 is provided at the end of the bolt 9. By loosening the bolt 9, the insertion depth of the slide rod 3 in the insertion hole 701 can be adjusted, thereby changing the distance between the two alignment plates 2, so that the alignment plates 2 can adapt to cardboard of different widths.

[0026] Meanwhile, by adjusting the extension length of the slide bars 3 on both sides, the relative left and right positions of the two alignment plates 2 on the conveying roller 11 can be changed, so that the alignment position of the paper is no longer limited to the center position of the conveying roller 11. It can be flexibly adjusted according to the feeding requirements of the end printing equipment, which greatly improves the adaptability of the equipment to different printing equipment and enhances the versatility of the device.

[0027] Finally, when the rubber block 10 at the end of the bolt 9 contacts the slide bar 3, it can ensure the tightness of the connection and avoid rigid wear between the bolt 9 and the slide bar 3, thus extending the service life of the component.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A paper feeding mechanism for a printing press paper bin, comprising a support frame (1), characterized in that, Multiple conveying rollers (11) are rotatably installed at equal intervals between the two top beams (101) of the bracket (1), and two alignment plates (2) are symmetrically arranged between the two top beams (101). The two alignment plates (2) are slidably connected to the two top beams (101) respectively. An opening and closing assembly is installed on the base frame (102) of the bracket (1). The opening and closing assembly is used to simultaneously drive the two alignment plates (2) to expand or converge. The two alignment plates (2) are respectively connected to the two moving ends of the opening and closing assembly through an adjustable structure, so as to realize the adjustable connection between the alignment plates (2) and the moving ends of the opening and closing assembly.

2. The paper feeding mechanism of the printing press paper bin according to claim 1, characterized in that, The alignment plate (2) has inclined structures (202) at both ends. The inclined structures (202) at both ends are inclined to the side away from the opposite alignment plate (2) to form an inclined transition shape.

3. The paper feeding mechanism of the printing press paper bin according to claim 2, characterized in that, The bottom of the alignment plate (2) is provided with several arc-shaped grooves (201) along its length direction. Each arc-shaped groove (201) is adapted and nested with the corresponding conveying roller (11), and the conveying roller (11) fits against the inner wall of the arc-shaped groove (201).

4. The paper feeding mechanism of the printing press paper bin according to claim 1, characterized in that, Each of the two alignment plates (2) has a sliding rod (3) symmetrically fixed in the middle of its opposite side. The axial direction of the sliding rod (3) is parallel to the axial direction of the conveying roller (11). The sliding rod (3) is slidably connected to the corresponding top beam (101) through a sliding hole.

5. The paper feeding mechanism of the printing press paper bin according to claim 4, characterized in that, The opening and closing assembly includes a guide rod cylinder (4) fixed on the base frame (102) and arranged longitudinally. The extended end of the guide rod cylinder (4) is fixed with a carrier plate (5). The top surface of the carrier plate (5) is symmetrically hinged with two drive rods (6). The two drive rods (6) are arranged in an inverted V shape. The upper end of the drive rod (6) is hinged with a connector (7). The two sets of slide rods (3) on both sides are respectively connected to the two connectors (7) on both sides.

6. The paper feeding mechanism of the printing press paper bin according to claim 5, characterized in that, The upper end of the connector (7) has two symmetrically formed insertion holes (701), and the slide rod (3) is inserted into the insertion holes (701).

7. The paper feeding mechanism of the printing press paper bin according to claim 6, characterized in that, The adjustable structure includes two connecting blocks (8) symmetrically fixed on one side of the connector (7) away from the opposite side of the connector (7). The two connecting blocks (8) are located between two insertion holes (701) on the connector (7). Bolts (9) are threadedly connected to the connecting blocks (8) through threaded holes. The ends of the bolts (9) face the outer wall of the slide rod (3) and the ends of the bolts (9) abut against the outer wall of the slide rod (3).

8. The paper feeding mechanism of the printing press paper bin according to claim 7, characterized in that, The bolt (9) includes a rubber block (10) at its end, which abuts against the outer wall of the slide bar (3).

Images