A printed waste paper shredder

Abstract

The utility model provides a kind of printing waste paper shredder, belong to printing processing equipment technical field, to solve the problem that waste paper is large, the waste paper of over-thick stacking is crushed in process, cause shredder overheating, serious and easily jammed, including shredding box, paper feed platform and paper outlet are respectively arranged in the front side of shredding box, sliding block is vertically slidably arranged in the both sides of shredding box, shredding shaft is arranged between the two sliding blocks, a plurality of saw blades are arranged on shredding shaft, a plurality of slits corresponding to saw blade are opened in shredding box inside on paper feed platform, cam is arranged on the side of shredding box, limiting platform corresponding to sliding block is arranged on the both sides of shredding box, sliding block and limiting platform are connected by reset spring, cam abuts on corresponding sliding block top surface, cam is driven to rotate by driving mechanism.

Description

Technical Field

[0001] This utility model belongs to the technical field of printing processing equipment, and more specifically, it relates to a printing waste paper shredder. Background Technology

[0002] With increasingly stringent environmental regulations and heightened public awareness of environmental protection, the printing industry needs to effectively manage large quantities of waste paper to reduce its environmental impact. A printing waste paper shredder is a specialized device for processing waste paper generated by the printing industry; it can shred waste paper into small pieces or fibers, facilitating recycling or safe disposal. Ordinary shredders, on the other hand, use saw blades to cut waste paper into strips for recycling. However, there are limitations on the thickness of the waste paper that can be shredded at one time. If the amount of waste paper is large and the stack is too thick, the shredder may overheat during the shredding process, and in severe cases, it may jam.

[0003] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings to provide a printing waste paper shredder, in order to achieve a more practical value. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides a waste paper shredder for printing, which solves the problem of overheating and potential jamming caused by shredding large quantities and excessively thick stacks of waste paper.

[0005] The purpose and effect of this utility model of a waste paper shredder are achieved by the following specific technical means:

[0006] A waste paper shredder includes a shredding box, with a paper inlet and a paper outlet respectively provided on the front side of the shredding box. Slider blocks are vertically slidably arranged on both sides of the shredding box, and a shredding shaft is passed between two sliders. Multiple saw blades are arranged on the shredding shaft. Multiple slits corresponding to the saw blades are opened on the paper inlet inside the shredding box. A cam is provided on one side of the shredding box, and limiting platforms corresponding to the sliders are provided on both sides of the shredding box. The sliders and limiting platforms are connected by a return spring. The cam abuts against the top surface of the corresponding slider, and the cam is driven to rotate by a drive mechanism.

[0007] Furthermore, the driving mechanism includes a drive gear located at one end of the crushing shaft, which is driven by a motor. A triangular plate is provided on one side of the crushing box, and a limit groove is vertically formed on the triangular plate. A secondary shaft is rotatably connected to the slider, and the secondary shaft passes through the limit groove and is connected to the drive pulley. A driven gear is coaxially provided on the drive pulley, and the driven gear meshes with the drive gear. A driven pulley connected to a cam is passed through the triangular plate. The drive pulley and the driven pulley are connected by a synchronous belt, and a tensioning mechanism is provided on the synchronous belt.

[0008] Furthermore, the tensioning mechanism includes a tensioning wheel, a movable groove is provided on the triangular plate, a movable block is slidably disposed in the movable groove, the tensioning wheel is rotatably connected to one side of the movable block, and the other side of the movable block is connected to a protruding position on the triangular plate through a compression spring, the protruding position being in the length direction of the movable groove.

[0009] Furthermore, the number of teeth on the driving gear is less than the number of teeth on the driven gear.

[0010] Furthermore, a bearing is fitted between the crushing shaft and the slider.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] By using a cam mechanism, the rotation of the cam drives the slider to move up and down repeatedly, allowing multiple saw blades to move up and down to shred the waste paper. This reduces the risk of jamming due to excessively thick waste paper, making it suitable for shredding large amounts of waste paper simultaneously and extending the service life of the shredder. Attached Figure Description

[0013] Figure 1 This is a perspective view of a waste paper shredder according to the present invention.

[0014] Figure 2 This is an exploded view of a waste paper shredder according to this utility model.

[0015] Figure 3 This is a partial structural schematic diagram of this utility model.

[0016] Figure 4 This is a front view of a waste paper shredder according to the present invention.

[0017] In the diagram, the correspondence between component names and drawing numbers is as follows:

[0018] 1. Shredder; 2. Feed table; 3. Shredder shaft; 4. Saw blade; 5. Paper outlet; 6. Triangular plate; 7. Linkage mechanism; 8. Slider; 9. Limiting table; 701. Drive gear; 702. Driven gear; 703. Countershaft; 704. Drive pulley; 705. Driven pulley; 706. Synchronous belt; 707. Cam; 708. Return spring; 709. Tensioner; 710. Movable groove; 711. Movable block; 712. Compression spring; 713. Limiting groove. Detailed Implementation

[0019] 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.

[0020] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" 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 this utility model based on the specific circumstances.

[0022] Example:

[0023] As attached Figure 1 To be continued Figure 4 As shown:

[0024] This utility model provides a waste paper shredder, including a shredder box 1. A paper feed table 2 and a paper outlet 5 are respectively provided on the front side of the shredder box 1. Slider 8 are vertically slidably arranged on both sides of the shredder box 1. A shredder shaft 3 is passed through the two sliders 8. Multiple saw blades 4 are provided on the shredder shaft 3. Multiple slits corresponding to the saw blades 4 are opened on the paper feed table 2 inside the shredder box 1. The shredder shaft 3 is driven by a motor. Waste paper is fed into the shredder box 1 through the paper feed table 2 and cut into strips by the saw blades 4. During the rotary cutting process, the saw blades 4 extend into the slits so that each sheet of paper can be cut.

[0025] During the crushing process, a cam 707 is provided on one side of the crushing box 1, and a limiting platform 9 corresponding to the slider 8 is provided on both sides of the crushing box 1. The slider 8 and the limiting platform 9 are connected by a return spring 708. The slider 8 can move up and down. The return spring 708 keeps the slider 8 and the saw blade 4 in the uppermost position. The cam 707 abuts against the top surface of the corresponding slider 8. The cam 707 is driven to rotate by the drive mechanism. The rotation of the cam 707 can push the slider 8 to move up and down, so that the saw blade 4 can swing up and down during the rotation, reducing the situation of jamming due to excessively thick waste paper. It is suitable for crushing a large amount of waste paper at the same time and extends the service life of the crusher.

[0026] like Figure 2 and Figure 3As shown, the drive mechanism includes a drive gear 701 set at one end of the crushing shaft 3, a triangular plate 6 set on one side of the crushing box 1, a limit groove 713 vertically opened on the triangular plate 6, a secondary shaft 703 rotatably connected to the slider 8, the secondary shaft 703 passing through the limit groove 713 and connected to the drive pulley 704. During the up and down movement of the slider 8, the secondary shaft 703 moves with the slider 8 in the limit groove 713. The drive pulley 704 is coaxially provided with a driven gear 702, which meshes with the drive gear 701. During the rotation of the crushing shaft 3 driven by the motor, the drive gear 701 drives the driven gear 702 to rotate. Since the number of teeth of the drive gear 701 is much smaller than the number of teeth of the driven gear 702, the rotation speed of the drive pulley 704 is slowed down.

[0027] A driven pulley 705 connected to a cam 707 is threaded onto a triangular plate 6. A driving pulley 704 is connected to the driven pulley 705 via a synchronous belt 706. Rotation of the driving pulley 704 drives the driven pulley 705 and the cam 707 to rotate. A tensioning mechanism is provided on the synchronous belt 706. As the cam 707 pushes the slider 8 to move up and down, the driving pulley 704 moves up and down accordingly. The tensioning mechanism ensures that the rotational kinetic energy of the driving pulley 704 can be transferred to the cam 707 during its movement.

[0028] The tensioning mechanism includes a tensioning wheel 709 and a movable groove 710 on a triangular plate 6. A movable block 711 is slidably disposed in the movable groove 710. In this embodiment, the movable groove 710 is arranged laterally. The tensioning wheel 709 is rotatably connected to one side of the movable block 711. The other side of the movable block 711 is connected to a protrusion on the triangular plate 6 via a compression spring 712. The protrusion is in the length direction of the movable groove 710. The compression spring 712 pushes the movable block 711, causing the tensioning wheel 709 to move away from the driving pulley 704. When the driving pulley 704 moves downward away from the driven pulley 705, the tensioning wheel 709 is pulled, and the movable block 711 squeezes the compression spring 712. When the driving pulley 704 returns to its original position and approaches the driven pulley 705, the compression spring 712 pushes the movable block 711 to return to its original position. The tensioning wheel 709 is in a state of always keeping the synchronous belt 706 taut, preventing the synchronous belt 706 from falling off.

[0029] The motor is mounted on another slider 8 and moves with the slider 8 while driving the crushing shaft 3 to rotate. A bearing is installed between the crushing shaft 3 and the slider 8 to reduce friction caused by rotation during movement.

[0030] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A waste paper shredder for printing, characterized in that: The device includes a shredder (1), with a paper feed table (2) and a paper outlet (5) on the front side of the shredder (1). Sliders (8) are vertically slidably arranged on both sides of the shredder (1), and a shredder shaft (3) is passed between the two sliders (8). Multiple saw blades (4) are arranged on the shredder shaft (3). Multiple slits corresponding to the saw blades (4) are opened on the paper feed table (2) inside the shredder (1). A cam (707) is arranged on one side of the shredder (1), and a limiting platform (9) corresponding to the slider (8) is arranged on both sides of the shredder (1). The slider (8) and the limiting platform (9) are connected by a return spring (708). The cam (707) abuts against the top surface of the corresponding slider (8), and the cam (707) is driven to rotate by a driving mechanism.

2. The waste paper shredder as described in claim 1, characterized in that: The driving mechanism includes a drive gear (701) set at one end of the crushing shaft (3), the crushing shaft (3) is driven by a motor, a triangular plate (6) is set on one side of the crushing box (1), a limit groove (713) is vertically opened on the triangular plate (6), a secondary shaft (703) is rotatably connected to the slider (8), the secondary shaft (703) passes through the limit groove (713) and is connected to the drive pulley (704), the drive pulley (704) is coaxially provided with a driven gear (702), the driven gear (702) meshes with the drive gear (701), a driven pulley (705) connected to the cam (707) is passed through the triangular plate (6), the drive pulley (704) and the driven pulley (705) are connected by a synchronous belt (706), and a tensioning mechanism is provided on the synchronous belt (706).

3. The waste paper shredder as described in claim 2, characterized in that: The tensioning mechanism includes a tensioning wheel (709), and a movable groove (710) is provided on the triangular plate (6). A movable block (711) is slidably arranged in the movable groove (710). The tensioning wheel (709) is rotatably connected to one side of the movable block (711). The other side of the movable block (711) is connected to a protruding position on the triangular plate (6) through a compression spring (712). The protruding position is in the length direction of the movable groove (710).

4. The waste paper shredder as described in claim 2, characterized in that: The number of teeth of the driving gear (701) is less than the number of teeth of the driven gear (702).

5. The waste paper shredder as described in claim 1, characterized in that: A bearing is fitted between the crushing shaft (3) and the slider (8).

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