Full-automatic paper cutting machine

Abstract

The invention discloses a full-automatic paper cutting machine which comprises a paper feeding platform, a paper pushing assembly arranged corresponding to the paper feeding platform, and a paper pressing device and a cutting knife arranged above the paper feeding platform, and is characterized in that the cutting knife is arranged on a knife holder, and the full-automatic paper cutting machine further comprises a first swing arm, a second swing arm and an obliquely arranged first hydraulic cylinder; one end of the first swing arm is hinged to one side of the tool apron, the other end of the first swing arm is hinged to the machine frame, one end of the second swing arm is hinged to the other side of the tool apron, the other end of the second swing arm is hinged to the machine frame, a cylinder body of the first hydraulic cylinder is arranged on the machine frame, and a piston rod of the first hydraulic cylinder is provided with a first transmission arm. And the first transmission arm can drive the tool apron to act. According to the hydraulic cutting device, the cutting knife can be driven by hydraulic power to conduct cutting machining, the overall structure of equipment is effectively simplified, and energy-saving operation is achieved.

Description

Technical Field

[0001] The present invention relates to a paper cutter, and more particularly to a fully automatic paper cutter. Background Art

[0002] A paper cutter is a device specifically used for paper cutting and processing. When working, the pusher first pushes the paper stack to the cutting station, then the paper presser descends to press and position the paper stack, and finally the tool holder drives the cutting knife to act on the paper to obtain the paper of the required specification. Currently, the driving mechanism for the movement of the tool holder on the market mainly uses a motor drive. The motor drives the flywheel to rotate through a pulley transmission component. The flywheel then transmits the power to the worm through a clutch. The worm drives the worm wheel to rotate, and the output shaft coaxial with the worm wheel outputs the power. This output shaft is connected to an eccentric wheel. One end of the eccentric wheel has a protruding shaft, and the protruding shaft drives the cutting rod to rotate, thereby driving the tool holder to perform a cutting motion. The defects of this structure are: the overall transmission structure is relatively complex, the production and assembly difficulty is high, and the later maintenance operation is also relatively troublesome; in addition, during the power transmission process, the flywheel must always rotate, that is, the motor must always rotate continuously, and the consumed electric energy is relatively large, making it difficult to achieve energy-saving production. Summary of the Invention

[0003] In view of the deficiencies of the background art, the technical problem to be solved by the present invention is to provide a fully automatic paper cutter for solving the above problems.

[0004] To this end, the present invention is implemented as follows: A fully automatic paper cutter includes a paper feeding platform, a pusher assembly corresponding to the paper feeding platform, a paper presser and a cutting knife are arranged above the paper feeding platform. It is characterized in that: the cutting knife is arranged on a tool holder, and further includes a first swing arm, a second swing arm and a first hydraulic cylinder arranged obliquely. One end of the first swing arm is hinged to one side of the tool holder, and the other end of the first swing arm is hinged to the frame. One end of the second swing arm is hinged to the other side of the tool holder, and the other end of the second swing arm is hinged to the frame. The cylinder body of the first hydraulic cylinder is arranged on the frame, and a first transmission arm is arranged on the piston rod of the first hydraulic cylinder. The first transmission arm can drive the tool holder to act.

[0005] An adjustment shaft is rotatably arranged on the first transmission arm. One end of the adjustment shaft is eccentrically provided with a cylindrical adjustment block, and the adjustment block is rotatably embedded in the tool holder.

[0006] The adjusting shaft is connected to the locking core through a fastener. A butterfly spring, a sleeve and a brake pad are arranged between the locking core and the knife seat. A clamping block is extended from the locking core. A clamping groove for the clamping block is provided on the adjusting shaft. A clearance groove corresponding to the outer contour of the clamping block is provided on the sleeve. The brake pad can be pressed tightly against the knife seat by screwing in the fastener.

[0007] The paper presser is connected to the return spring and also includes a second transmission arm and a third transmission arm. The first and second transmission arms are rotatably arranged on the frame. One end of the second transmission arm is hinged to one end of the fourth transmission arm, and the other end of the fourth transmission arm is hinged to one side of the paper presser. One end of the third transmission arm is hinged to one end of the fifth transmission arm, and the other end of the fifth transmission arm is hinged to the other side of the paper presser. The other end of the second transmission arm and the other end of the third transmission arm both rest on the top cover, and the top cover is connected to the piston rod of the second hydraulic cylinder. A guide assembly is provided corresponding to the paper presser.

[0008] The second transmission arm and the third transmission arm are both provided with rollers that abut against the top cover.

[0009] It also includes a pedal rod, one end of which is hinged on the frame. An elastic reset component and an induction switch are provided corresponding to the pedal rod. When the induction switch detects the pedal rod, it feeds back information to the controller, and the controller can control the action of the second hydraulic cylinder.

[0010] The paper pushing assembly includes a paper pusher, one end of which is connected to a movable frame, a slide seat is provided on the movable frame, a slide rail cooperating with the slide seat is provided on the frame, the movable frame is screwed to a driving screw, and the driving screw is transmission-connected to the first motor.

[0011] The paper pushing assembly includes a paper pusher, which has push paper boards arranged at intervals, a card slot provided at the bottom of the push paper board, and a floating insert, which is inserted into the card slot. A spring is provided between the floating insert and the push paper board so that the bottom of the floating insert is pressed tightly against the paper feeding platform.

[0012] The floating insert is U-shaped, and the extension arms at both ends of the floating insert are clamped on both ends of the pushing paper board.

[0013] The knife seat is provided with an inclined bolt slot, and the fastener passes through the bolt slot and is screwed to the cutting knife. The inclined direction of the bolt slot is substantially perpendicular to the piston rod of the first hydraulic cylinder.

[0014] A fully automatic paper cutter according to the above technical solution uses a hydraulic cylinder as a power source to drive the tool holder to move, and is configured with first and second swing arm structures to guide the movement of the tool holder, which can ensure the stability and reliability of the movement of the tool holder, and replaces the structure of the traditional motor driving the tool holder to act. Its overall structure is simple, and production assembly and later maintenance are more convenient. At the same time, it does not require the motor to rotate continuously for transmission, and only needs to control the action of the hydraulic cylinder. Its working energy consumption is low, and energy-saving production can be effectively achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention has the following drawings: Figure 1 is the external structure diagram of the present invention; Figure 2 is Figure 1 the partial enlarged view at the position pointed by A in Figure 3 is Figure 1 the view from another perspective; Figure 4 is the view of the present invention after removing part of the frame; Figure 5 is Figure 4 the view after removing the tool holder; Figure 6 is Figure 5 the view from another perspective; Figure 7 is the cross-sectional view of the present invention; Figure 8 is Figure 7 the partial enlarged view at the position pointed by B in Figure 9 is the structure diagram of the adjusting shaft and the locking core of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] As shown in the figure, a fully automatic paper cutter disclosed by the present invention includes a paper feeding platform 2, a paper pushing assembly is arranged corresponding to the paper feeding platform 2, a paper pressing device 4 and a cutting knife 5 are arranged above the paper feeding platform 2, the cutting knife 5 is arranged on a tool holder 8, and further includes a first swing arm 16, a second swing arm 17 and a first hydraulic cylinder 18 arranged obliquely. One end of the first swing arm 16 is hinged to one side of the tool holder 8, the other end of the first swing arm 16 is hinged to the frame 1, one end of the second swing arm 17 is hinged to the other side of the tool holder 8, the other end of the second swing arm 17 is hinged to the frame 1, the cylinder body of the first hydraulic cylinder 18 is arranged on the frame 1, and a first transmission arm 22 is arranged on the piston rod of the first hydraulic cylinder 18, and the first transmission arm 22 can drive the tool holder 8 to act.

[0017] Further, an adjustment shaft 33 is rotatably arranged on the first transmission arm 22, and a support sleeve 32 is arranged inside the first transmission arm 22 to rotatably support the adjustment shaft 33. One end of the adjustment shaft 33 is eccentrically provided with a cylindrical adjustment block 7, and the adjustment block 7 is rotatably embedded in the tool holder 8. With this structure, by controlling the rotation of the adjustment block 7 and the adjustment shaft 33, since the adjustment block 7 is eccentrically arranged, the tool holder 8 can be driven to make a small displacement, thereby adjusting the relative position between the tool holder 8 and the first transmission arm 22, so as to ensure that the cutting depth position of the cutting knife 5 is accurately adjusted.

[0018] Further, the adjustment shaft 33 is connected to the locking core 37 through a fastener. A disc spring 36, a bushing 35 and a brake pad 34 are arranged between the locking core 37 and the tool holder 8. A clamping block 40 is extended and arranged on the locking core 37, a clamping groove 38 for the clamping block 40 to be inserted into is arranged on the adjustment shaft 33, and a relief groove corresponding to the outer contour of the clamping block 40 is arranged on the bushing 35. By screwing in the fastener, the brake pad 34 can be tightly pressed on the tool holder 8. A relief hole 39 for the fastener to pass through is arranged on the locking core 37. With this structure, when the brake pad 34 is tightly pressed on the tool holder 8, one side of the brake pad 34 will simultaneously limit the rotation of the bushing 35, thereby limiting the rotation of the locking core 37, and the rotation of the adjustment shaft 33 is simultaneously limited through the cooperation of the clamping block 40 and the clamping groove 38, ensuring that the adjustment shaft 33 and the adjustment block 7 will not rotate during normal paper cutting operation. When fine adjustment of the position of the tool holder 8 is required, by unscrewing the fastener, at this time the brake pad 34 will no longer limit the rotation of the bushing 35, and the rotation of the adjustment block 7 and the adjustment shaft 33 can be controlled to adjust the position of the tool holder 8. After the adjustment is in place, by screwing in the fastener again, the brake pad 34 is pressed tightly on the tool holder 8 to lock the adjustment shaft 33.

[0019] Further, the paper press 4 is connected to the return spring 29, and further includes a second transmission arm 26 and a third transmission arm 30. The first and second transmission arms are rotatably arranged on the frame 1. One end of the second transmission arm 26 is hinged to one end of the fourth transmission arm 27, and the other end of the fourth transmission arm 27 is hinged to one side of the paper press 4. One end of the third transmission arm 30 is hinged to one end of the fifth transmission arm 31, and the other end of the fifth transmission arm 31 is hinged to the other side of the paper press 4. The other ends of the second transmission arm 26 and the third transmission arm 30 both abut against the top cover 24. The top cover 24 is connected to the piston rod of the second hydraulic cylinder 21. A guiding component is provided corresponding to the paper press 4. Specifically, the guiding component is a guide block 28 fixed on the frame. The guide block 28 is inserted into the guide groove on the side of the paper press 4 to guide the lifting of the paper press 4. By adopting the above structure, the top cover 24 can be driven to rise by controlling the second hydraulic cylinder 21, and then the second and third transmission arms are extruded to rotate, and then transmitted through the fourth and fifth transmission arms, so as to drive the paper press 4 to rise under the guidance of the guiding component. When the piston rod of the second hydraulic cylinder 21 retracts, the return spring 29 will drive the paper press 4 to rise and reset. It replaces the structure of connecting the paper press 4 with a foot pedal in a traditional paper cutter, eliminating the need for manual foot stepping on the pedal to drive the paper press 4 to descend, which can greatly save the labor intensity of workers and ensure the paper pressing quality.

[0020] Further, rollers 25 are provided on both the second transmission arm 26 and the third transmission arm 30 and abut against the top cover 24, making the transmission between the top cover 24 and the second and third transmission arms smoother.

[0021] Further, a foot pedal rod 3 is further included. One end of the foot pedal rod 3 is hinged to the frame 1. An elastic reset component and an induction switch 23 are provided corresponding to the foot pedal rod 3. The elastic reset component includes a spring 19. One end of the spring 19 is connected to the frame, and the other end is connected to an extension member 20. The extension member 20 is arranged on the foot pedal rod 3. When the induction switch 23 detects the foot pedal rod 3, it feeds back information to the controller, and the controller can control the action of the second hydraulic cylinder 21. By adopting the above structure, when it is necessary to control the paper press 4 to descend, only need to gently step on the foot pedal rod 3. When the foot pedal rod 3 swings to the induction switch 23, the induction switch 23 detects the foot pedal rod 3 and feeds back information to the controller. The controller controls the second hydraulic cylinder 21 to drive the top cover 24 to act, and drives the paper press 4 to rise through the transmission arm assembly. When it is necessary to control the paper press 4 to rise, only need to release the foot pedal rod 3, and the spring 19 drives the foot pedal rod 3 to swing and reset away from the induction switch 23. At this time, the induction switch 23 also feeds back information to the controller, and the controller controls the second hydraulic cylinder 21 to drive the top cover to descend, and the paper press 4 rises and resets under the drive of the return spring 29.

[0022] Further, the paper pushing assembly includes a paper pusher 9. One end of the paper pusher 9 is connected to the moving frame 14. A sliding seat 13 is arranged on the moving frame 14, and a slide rail 12 cooperating with the sliding seat 13 is arranged on the machine frame 1. The moving frame 14 is screwed to the driving lead screw 15, and the driving lead screw 15 is in transmission connection with the first motor. This single-guide rail side-mounted method can simplify the overall structure and make the overall quality lighter. Further, the paper pushing assembly includes a paper pusher 9. The paper pusher 9 is provided with push paper plates 10 arranged at intervals. A clamping groove 13 is arranged at the bottom of the push paper plate 10. It also includes a floating insert block 11. The floating insert block 11 is snapped into the clamping groove 13. A spring is arranged between the floating insert block 11 and the push paper plate 10, so that the bottom of the floating insert block 11 tightly presses on the paper feeding platform 2. The floating insert block 11 is U-shaped, and the extending arms 12 at both ends of the floating insert block 11 are clamped at both ends of the push paper plate 10. With the above structure, the floating insert block 11 always abuts against the paper feeding platform 2, which can ensure that the paper at the bottom of the paper stack is pushed. At the same time, the floating insert block 11 adopts a special shape and is clamped with the push paper plate 10 together, which can ensure that the horizontal position of the floating insert block 11 will not shift either, improving the stability of the position during work and ensuring that the paper pushing operation can be carried out stably.

[0023] Further, the tool holder 8 is provided with an inclined bolt groove 6. The fastener passes through the bolt groove 6 and is screwed to the cutting knife 5. The inclined direction of the bolt groove 6 is basically perpendicular to the piston rod of the first hydraulic cylinder 18. By adopting the above structure, the cutting force of the cutting knife 5 can be enhanced, preventing the cutting knife 5 from sliding relative to the tool holder 8 and further ensuring the cutting quality.

[0024] The working principle of the present invention is as follows: The paper is stacked on the paper feeding platform 2. Then the paper pusher 9 acts to push the paper stack to the cutting station. Then step on the foot lever 3 to control the paper presser 4 to descend to press and position the paper stack. Then control the first hydraulic cylinder 18 to act, driving the tool holder 8 to descend along a certain trajectory under the guidance of the first and second swing arms, so that the cutting knife � cuts the paper stack. After cutting is completed, the first hydraulic cylinder 18 drives the tool holder 8 to rise and reset, and release the foot lever 3. The paper presser 4 rises and separates from the paper stack, and the paper pusher 9 pushes out the cut paper stack.

[0025] With this structure of the present invention, by using a hydraulic cylinder as the power source to drive the tool holder to move and configuring the first and second swing arm structures to guide the movement of the tool holder, the stability and reliability of the tool holder movement can be ensured. Moreover, it replaces the traditional structure of using a motor to drive the tool holder to act. Its overall structure is simple, and production assembly and later maintenance are more convenient. At the same time, it does not require the motor to continuously rotate for transmission, only needs to control the action of the hydraulic cylinder, and its working energy consumption is low, which can effectively achieve energy-saving production.

Claims

1. A fully automatic paper cutter, comprising a paper feeding platform (2), a paper pushing assembly is arranged corresponding to the paper feeding platform (2), a paper presser (4) and a cutting knife (5) are arranged above the paper feeding platform (2), and it is characterized in that: The cutting knife (5) is arranged on the tool holder (8), and further includes a first swing arm (16), a second swing arm (17), and a first hydraulic cylinder (18) arranged obliquely. One end of the first swing arm (16) is hinged to one side of the tool holder (8), and the other end of the first swing arm (16) is hinged to the frame (1). One end of the second swing arm (17) is hinged to the other side of the tool holder (8), and the other end of the second swing arm (17) is hinged to the frame (1). The cylinder block of the first hydraulic cylinder (18) is arranged on the frame (1), and a first transmission arm (22) is arranged on the piston rod of the first hydraulic cylinder (18), and the first transmission arm (22) can drive the tool holder (8) to act.

2. The full-automatic paper cutter according to claim 1, characterized in that: An adjustment shaft (33) is rotatably arranged on the first transmission arm (22), and a cylindrical adjustment block (7) is eccentrically arranged at one end of the adjustment shaft (33), and the adjustment block (7) is rotatably embedded into the tool holder (8).

3. The full-automatic paper cutter according to claim 2, wherein: The adjustment shaft (33) is connected to a locking core (37) through a fastener. A disc spring (36), a bushing (35), and a brake pad (34) are arranged between the locking core (37) and the tool holder (8). A clamping block (40) extends from the locking core (37), and a clamping groove (38) for the clamping block (40) to be inserted into is arranged on the adjustment shaft (33). A relief groove corresponding to the outer contour of the clamping block (40) is arranged on the bushing (35). By screwing in the fastener, the brake pad (34) can be tightly pressed against the tool holder (8).

4. A fully automatic paper cutter according to claim 1, characterized in that: The paper presser (4) is connected to a return spring (29), and further includes a second transmission arm (26) and a third transmission arm (30). The first and second transmission arms are rotatably arranged on the frame (1). One end of the second transmission arm (26) is hinged to one end of a fourth transmission arm (27), and the other end of the fourth transmission arm (27) is hinged to one side of the paper presser (4). One end of the third transmission arm (30) is hinged to one end of a fifth transmission arm (31), and the other end of the fifth transmission arm (31) is hinged to the other side of the paper presser (4). The other ends of the second transmission arm (26) and the third transmission arm (30) both abut against the top cover (24). The top cover (24) is connected to the piston rod of the second hydraulic cylinder (21), and a guiding component is arranged corresponding to the paper presser (4).

5. An automatic paper cutter according to claim 4, characterized in that: Rollers (25) are arranged on both the second transmission arm (26) and the third transmission arm (30) and abut against the top cover (24).

6. The full-automatic paper cutter according to claim 4, wherein: A foot pedal rod (3) is further included. One end of the foot pedal rod (3) is hinged to the frame (1). An elastic return component and an induction switch (23) are arranged corresponding to the foot pedal rod (3). When the induction switch (23) detects the foot pedal rod (3), it feeds back information to the controller, and the controller can control the action of the second hydraulic cylinder (21).

7. A fully automatic paper cutter according to claim 1, characterized in that: The paper pushing assembly includes a paper pusher (9), one end of the paper pusher (9) is connected to a moving frame (14), a sliding seat (13) is arranged on the moving frame (14), a slide rail (12) matched with the sliding seat (13) is arranged on a machine frame (1), the moving frame (14) is screwed to a driving lead screw (15), and the driving lead screw (15) is in transmission connection with a first motor.

8. A fully automatic paper cutter according to claim 1 or 7, characterized in that: The paper pushing assembly includes a paper pusher (9), paper pushing plates (10) are arranged on the paper pusher (9) at intervals, a clamping groove (13) is arranged at the bottom of the paper pushing plate (10), and further includes a floating insert block (11), the floating insert block (11) is clamped into the clamping groove (13), and a spring is arranged between the floating insert block (11) and the paper pushing plate (10) so that the bottom of the floating insert block (11) tightly presses on a paper feeding platform (2).

9. The full-automatic paper cutter according to claim 8, characterized in that: The floating insert block (11) is U-shaped, and extension arms (12) at both ends of the floating insert block (11) are clamped at both ends of the paper pushing plate (10).

10. A fully automatic paper cutter according to claim 1, characterized in that: The tool holder (8) is provided with an inclined bolt groove (6), a fastener passes through the bolt groove (6) and is screwed to a cutting knife (5), and the inclined direction of the bolt groove (6) is basically perpendicular to the piston rod of a first hydraulic cylinder (18).

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