A fully automatic paper cutter

Abstract

This utility model discloses a fully automatic paper cutter, including a paper feeding platform, a paper pushing assembly corresponding to the paper feeding platform, a paper presser and a cutting blade above the paper feeding platform. The cutting blade is mounted on a blade holder, and the machine also includes a first swing arm, a second swing arm, and a first hydraulic cylinder arranged at an angle. One end of the first swing arm is hinged to one side of the blade holder, and the other end is hinged to the frame. One end of the second swing arm is hinged to the other side of the blade holder, and the other end is hinged to the frame. The cylinder body of the first hydraulic cylinder is mounted on the frame, and a first transmission arm is mounted on the piston rod of the first hydraulic cylinder. The first transmission arm can drive the blade holder to move. This utility model enables hydraulic power transmission of the cutting blade for cutting, effectively simplifying the overall structure of the equipment and achieving energy-saving operation.

Description

Technical Field

[0001] This utility model relates to paper cutters, specifically to a fully automatic paper cutter. Background Technology

[0002] A paper cutter is a specialized device for cutting and processing paper. During operation, the paper pusher first pushes the paper stack to the cutting station, then the paper presser descends to hold the stack in place, and finally the cutter head drives the cutting blade to cut the paper to the required specifications. Currently, the drive mechanism for the cutter head movement on the market mainly uses a motor drive. The motor drives the flywheel to rotate via a belt pulley transmission assembly. The flywheel then transmits power to the worm gear via a clutch, which drives the worm wheel to rotate. The output shaft, coaxial with the worm wheel, outputs power. This output shaft connects to a guide wheel, one end of which has an extension shaft. The extension shaft drives the cutting pull rod to rotate, which in turn drives the cutter head to perform the cutting motion. The drawbacks of this structure are: the overall transmission structure is relatively complex, making production and assembly difficult, and subsequent maintenance is also relatively troublesome; furthermore, during power transmission, the flywheel must rotate continuously, meaning the motor must rotate continuously, resulting in high energy consumption and making energy-efficient production difficult. Utility Model Content

[0003] In view of the deficiencies in the prior art, the technical problem to be solved by this utility model is to provide a fully automatic paper cutter for solving the above-mentioned problems.

[0004] Therefore, this utility model is implemented using the following solution:

[0005] An automatic paper cutter includes a paper feeding platform, a paper pushing assembly corresponding to the paper feeding platform, a paper presser and a cutting blade above the paper feeding platform. The cutting blade is mounted on a blade holder. The machine also includes a first swing arm, a second swing arm, and a first hydraulic cylinder arranged at an angle. One end of the first swing arm is hinged to one side of the blade holder, and the other end is hinged to the frame. One end of the second swing arm is hinged to the other side of the blade holder, and the other end is hinged to the frame. The cylinder body of the first hydraulic cylinder is mounted on the frame, and a first transmission arm is mounted on the piston rod of the first hydraulic cylinder. The first transmission arm can drive the blade holder to move.

[0006] An adjusting shaft is rotatably mounted on the first transmission arm, and a cylindrical adjusting block is eccentrically mounted on one end of the adjusting shaft. The adjusting block is rotatably embedded in the tool holder.

[0007] The adjusting shaft is connected to the locking core via fasteners. A butterfly spring, a bushing, and a brake pad are provided between the locking core and the tool holder. A locking block extends from the locking core. The adjusting shaft is provided with a slot for the locking block to be inserted. The bushing is provided with a relief groove corresponding to the outer contour of the locking block. By screwing in the fasteners, the brake pad can be pressed tightly against the tool holder.

[0008] The paper presser is connected to a return spring and also includes a second transmission arm and a third transmission arm. The first and second transmission arms are rotatably mounted 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 ends of the second and third transmission arms abut against the top cover. The top cover is connected to the piston rod of the second hydraulic cylinder, and a guide assembly is provided corresponding to the paper presser.

[0009] Both the second and third transmission arms are equipped with rollers that rest against the top cover.

[0010] It also includes a foot pedal, one end of which is hinged to the frame. A spring-loaded reset component and a sensor switch are provided on the foot pedal. When the sensor switch detects the foot pedal, it sends feedback information to the controller, which can then control the movement of the second hydraulic cylinder.

[0011] The paper pushing assembly includes a paper pusher, one end of which is connected to a movable frame. The movable frame is provided with a slide block, and the frame is provided with a slide rail that cooperates with the slide block. The movable frame is screwed to a drive screw, and the drive screw is driven by a first motor.

[0012] The paper pushing assembly includes a paper pusher with pusher plates arranged at intervals. The bottom of the pusher plates is provided with a mounting groove. The assembly also includes a floating insert that is inserted into the mounting groove. A spring is provided between the floating insert and the pusher plates so that the bottom of the floating insert is pressed tightly against the paper feeding platform.

[0013] The floating insert is U-shaped, and the extension arms at both ends of the floating insert are locked to both ends of the push plate.

[0014] The blade holder has an inclined bolt groove, through which fasteners are threaded to the cutting blade. The inclined direction of the bolt groove is substantially perpendicular to the piston rod of the first hydraulic cylinder.

[0015] The above-mentioned fully automatic paper cutter uses a hydraulic cylinder as a power source to drive the knife holder to move, and is equipped with a first and second swing arm structure to guide the movement of the knife holder. This ensures the stability and reliability of the knife holder movement and replaces the traditional structure of motor-driven knife holder movement. Its overall structure is simple, and production assembly and subsequent maintenance are more convenient. At the same time, it does not require the continuous rotation of the motor for transmission, but only the movement of the hydraulic cylinder needs to be controlled. Its energy consumption is low, which can effectively achieve energy-saving production. Attached Figure Description

[0016] The present invention includes the following figures:

[0017] Figure 1 This is a diagram of the external structure of the present invention;

[0018] Figure 2 for Figure 1 A magnified view of the area pointed to by A in the middle;

[0019] Figure 3 for Figure 1 Another perspective;

[0020] Figure 4 This is a view of the present invention after part of the frame has been removed;

[0021] Figure 5 for Figure 4 View after removing the tool holder;

[0022] Figure 6 for Figure 5 Another perspective;

[0023] Figure 7 This is a cross-sectional view of the present invention;

[0024] Figure 8 for Figure 7 A magnified view of the area pointed to by B in the middle;

[0025] Figure 9 This is a structural diagram of the adjusting shaft and locking core of this utility model. Detailed Implementation

[0026] As shown in the figure, the fully automatic paper cutter disclosed in this utility model includes a paper feeding platform 2, a paper pushing assembly corresponding to the paper feeding platform 2, a paper presser 4 and a cutting blade 5 above the paper feeding platform 2, the cutting blade 5 being mounted on a blade holder 8, and also 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 blade 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 blade holder 8, and 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 mounted on the frame 1, and a first transmission arm 22 is mounted on the piston rod of the first hydraulic cylinder 18. The first transmission arm 22 can drive the blade holder 8 to move.

[0027] Furthermore, an adjusting shaft 33 is rotatably mounted on the first transmission arm 22, and a support sleeve 32 is provided inside the first transmission arm 22 to provide rotational support for the adjusting shaft 33. A cylindrical adjusting block 7 is eccentrically mounted on one end of the adjusting shaft 33, and the adjusting block 7 is rotatably embedded in the blade holder 8. With this structure, by controlling the rotation of the adjusting block 7 and the adjusting shaft 33, the eccentric setting of the adjusting block 7 can drive the blade holder 8 to make a small displacement, thereby adjusting the relative position between the blade holder 8 and the first transmission arm 22, thus ensuring that the cutting blade 5 accurately adjusts the cutting depth.

[0028] Furthermore, the adjusting shaft 33 is connected to the locking core 37 via fasteners. A disc spring 36, a bushing 35, and a brake pad 34 are provided between the locking core 37 and the tool holder 8. A locking block 40 extends from the locking core 37. The adjusting shaft 33 is provided with a slot 38 for the locking block 40 to be inserted. The bushing 35 is provided with a relief groove corresponding to the outer contour of the locking block 40. By screwing in the fasteners, the brake pad 34 can be pressed tightly against the tool holder 8. The locking core 37 is provided with a clearance hole 39 for the fastener to pass through. With this structure, when the brake pad 34 is pressed tightly on the cutter holder 8, one side of the brake pad 34 will simultaneously restrict the rotation of the bushing 35, thereby restricting the rotation of the locking core 37. The locking block 40 and the slot 38 cooperate to simultaneously restrict the rotation of the adjusting shaft 33, ensuring that the adjusting shaft 33 and the adjusting block 7 will not rotate during normal paper cutting operations. When it is necessary to fine-tune the position of the cutter holder 8, the fastener is unscrewed. At this time, the brake pad 34 will no longer restrict the rotation of the bushing 35. The adjusting block 7 and the adjusting shaft 33 can be controlled to rotate to adjust the position of the cutter holder 8. After the adjustment is in place, the fastener is screwed in to press the brake pad 34 onto the cutter holder 8 to lock the adjusting shaft 33.

[0029] Furthermore, the paper presser 4 is connected to the return spring 29 and also includes a second transmission arm 26 and a third transmission arm 30. The first and second transmission arms are rotatably mounted 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 presser 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 presser 4. The other ends of the second transmission arm 26 and the third transmission arm 30 abut against the top cover 24. The top cover 24 is connected to the piston rod of the second hydraulic cylinder 21. A guide assembly is provided corresponding to the paper presser 4. Specifically, the guide assembly 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 presser 4 to guide the lifting and lowering of the paper presser 4. By adopting the above structure, the top cover 24 can be raised by controlling the second hydraulic cylinder 21, which then squeezes the second and third transmission arms to rotate. The fourth and fifth transmission arms then drive the paper presser 4 to rise under the guidance of the guide assembly. When the piston rod of the second hydraulic cylinder 21 retracts, the return spring 29 will cause the paper presser 4 to rise and return to its original position. This replaces the traditional paper cutter structure where the paper presser 4 is connected to a foot pedal, eliminating the need for manual foot pedal operation to lower the paper presser 4. This significantly reduces labor intensity and ensures paper pressing quality.

[0030] Furthermore, rollers 25 are provided on both the second transmission arm 26 and the third transmission arm 30 to abut against the top cover 24, making the transmission between the top cover 24 and the second and third transmission arms smoother.

[0031] Furthermore, it also includes a foot pedal 3, one end of which is hinged to the frame 1. A spring-loaded reset assembly and a sensor switch 23 are provided corresponding to the foot pedal 3. The spring-loaded reset assembly includes a spring 19, one end of which is connected to the frame and the other end is connected to the extension member 20. The extension member 20 is provided on the foot pedal 3. When the sensor switch 23 detects the foot pedal 3, it feeds back information to the controller, which can control the action of the second hydraulic cylinder 21. By adopting the above structure, when it is necessary to control the paper presser 4 to descend, simply step on the foot pedal 3 lightly. When the foot pedal 3 swings to the induction switch 23, the induction switch 23 detects the foot pedal 3 and sends feedback information to the controller. The controller controls the second hydraulic cylinder 21 to drive the top cover 24 to move, and drives the paper presser 4 to rise through the transmission arm assembly. When it is necessary to control the paper presser 4 to rise, simply release the foot pedal 3. The spring 19 drives the foot pedal 3 to swing back to its original position away from the induction switch 23. At this time, the induction switch 23 will also send feedback information to the controller. The controller controls the second hydraulic cylinder 21 to drive the top cover to descend, and the paper presser 4 rises to its original position under the action of the return spring 29.

[0032] Furthermore, the paper pushing assembly includes a paper pusher 9, one end of which is connected to a movable frame 14. A slide block 13 is mounted on the movable frame 14, and a slide rail 12 that mates with the slide block 13 is mounted on the frame 1. The movable frame 14 is screwed to a drive screw 15, which is connected to a first motor for transmission. This single-rail side-mounted design simplifies the overall structure and reduces the overall weight.

[0033] Furthermore, the paper pushing assembly includes a paper pusher 9 with pusher plates 10 arranged at intervals. The bottom of each pusher plate 10 has a locking groove 13. It also includes a floating insert 11 that engages with the locking groove 13. A spring is positioned between the floating insert 11 and the pusher plate 10, ensuring the bottom of the floating insert 11 is pressed firmly against the paper feeding platform 2. The floating insert 11 is U-shaped, with its extended arms 12 at both ends engaging with the ends of the pusher plate 10. With this structure, the floating insert 11 always abuts against the paper feeding platform 2, ensuring that the bottom of the paper stack is pushed. Simultaneously, the special shape of the floating insert 11 engaging with the pusher plate 10 prevents horizontal displacement, improving stability during operation and ensuring stable paper pushing.

[0034] Furthermore, the blade holder 8 has an inclined bolt groove 6, through which fasteners pass and are screwed to the cutting blade 5. The inclination direction of the bolt groove 6 is substantially perpendicular to the piston rod of the first hydraulic cylinder 18. By adopting the above structure, the cutting force of the cutting blade 5 can be enhanced, preventing the cutting blade 5 from sliding relative to the blade holder 8, and further ensuring the cutting quality.

[0035] The working principle of this utility model is as follows: the paper is stacked on the paper feeding platform 2, then the paper pusher 9 is activated to push the paper stack to the cutting station. Then, the foot pedal 3 is stepped on to control the paper presser 4 to descend and press the paper stack into position. Then, the first hydraulic cylinder 18 is activated to drive the knife holder 8 to descend along a certain trajectory under the guidance of the first and second swing arms, so that the cutting knife 5 cuts the paper stack. After the cutting is completed, the first hydraulic cylinder 18 drives the knife holder 8 to rise and reset, and releases the foot pedal 3. The paper presser 4 rises and separates from the paper stack, and the paper pusher 9 pushes out the cut paper stack.

[0036] This invention employs a hydraulic cylinder as a power source to drive the tool holder to move, and is equipped with first and second swing arm structures to guide the movement of the tool holder. This ensures the stability and reliability of the tool holder's movement and replaces the traditional structure that uses a motor to drive the tool holder. Its overall structure is simple, making production assembly and subsequent maintenance more convenient. Furthermore, it does not require a continuously rotating motor for transmission; only the movement of the hydraulic cylinder needs to be controlled. Its energy consumption is low, effectively achieving energy-saving production.

Claims

1. A fully automatic paper cutter, comprising a paper feeding platform (2), a paper pushing assembly corresponding to the paper feeding platform (2), and a paper presser (4) and a cutting blade (5) disposed above the paper feeding platform (2), characterized in that: The cutting blade (5) is mounted on the blade holder (8) and also includes a first swing arm (16), a second swing arm (17) and a first hydraulic cylinder (18) arranged at an angle. One end of the first swing arm (16) is hinged to one side of the blade 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 blade holder (8) and 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 mounted on the frame (1). A first transmission arm (22) is mounted on the piston rod of the first hydraulic cylinder (18). The first transmission arm (22) can drive the blade holder (8) to move.

2. The fully automatic paper cutter according to claim 1, characterized in that: An adjusting shaft (33) is rotatably mounted on the first transmission arm (22). A cylindrical adjusting block (7) is eccentrically mounted on one end of the adjusting shaft (33). The adjusting block (7) is rotatably embedded in the tool holder (8).

3. The fully automatic paper cutter according to claim 2, characterized in that: The adjusting shaft (33) is connected to the locking core (37) by fasteners. A butterfly spring (36), a bushing (35) and a brake pad (34) are provided between the locking core (37) and the tool holder (8). A locking block (40) extends from the locking core (37). A slot (38) is provided on the adjusting shaft (33) for the locking block (40) to be inserted. A relief groove corresponding to the outer contour of the locking block (40) is provided on the bushing (35). By screwing in the fasteners, the brake pad (34) can be pressed tightly onto the tool holder (8).

4. The fully automatic paper cutter according to claim 1, characterized in that: The paper presser (4) is connected to the return spring (29) and also includes a second transmission arm (26) and a third transmission arm (30). The first and second transmission arms are rotatably mounted 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 presser (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 presser (4). The other ends of the second transmission arm (26) and the third transmission arm (30) are both abutted against the top cover (24). The top cover (24) is connected to the piston rod of the second hydraulic cylinder (21), and a guide assembly is provided corresponding to the paper presser (4).

5. The fully automatic paper cutter according to claim 4, characterized in that: Both the second transmission arm (26) and the third transmission arm (30) are equipped with rollers (25) that abut against the top cover (24).

6. The fully automatic paper cutter according to claim 4, characterized in that: It also includes a foot pedal (3), one end of which is hinged to the frame (1). A spring reset component and a sensor switch (23) are provided corresponding to the foot pedal (3). When the sensor switch (23) detects the foot pedal (3), it feeds back information to the controller, which can control the action of the second hydraulic cylinder (21).

7. The fully automatic paper cutter according to claim 1, characterized in that: The paper pushing assembly includes a paper pusher (9), one end of which is connected to a movable frame (14). A slide (13) is provided on the movable frame (14), and a slide rail (12) that cooperates with the slide (13) is provided on the frame (1). The movable frame (14) is screwed to a drive screw (15), and the drive screw (15) is connected to 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), on which pusher plates (10) are arranged at intervals. The bottom of the pusher plates (10) is provided with a mounting groove (13). It also includes a floating insert (11), which is inserted into the mounting groove (13). A spring is provided between the floating insert (11) and the pusher plates (10) so that the bottom of the floating insert (11) is pressed tightly against the paper feeding platform (2).

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

10. A fully automatic paper cutter according to claim 1, characterized in that: The blade holder (8) has an inclined bolt groove (6), through which fasteners pass and are screwed to the cutting blade (5). The inclined direction of the bolt groove (6) is basically perpendicular to the piston rod of the first hydraulic cylinder (18).

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