Honeycomb paperboard cutting mechanism
Through the driving combination design of the cutter and bottom tool holder, the problem of uneven cutting surface and slow speed of the honeycomb cardboard cutting mechanism in the cutting of thick plates is solved, and high-speed cutting of thin plates and thick plates is achieved, which improves the cutting accuracy and speed.
Patent Information
- Application Number
- CN202422442311.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-10
- Publication Date
- 2025-07-29
- Estimated Expiration
- 2034-10-10
AI Technical Summary
The existing honeycomb cardboard cutting mechanism has problems such as uneven cutting surface and damaged cutting knife when cutting thick plates, and the cutting speed is slow, so it is not suitable for high-speed machines.
The combined design of the cutter, bottom tool holder, first driving member and second driving member is adopted. The cutter is driven by the first cam and connecting rod, and the second cam and connecting rod drive the cutter and bottom tool holder to move forward and backward, so as to realize the synchronous movement of the cutter and the cardboard. The cutter is stationary with the cardboard during cutting, and the cutting accuracy is improved with the shock-absorbing support member.
It realizes flat cutting of thin plates and thick plates, with fast cutting speed, meeting high-speed production needs, streamlined structure, improved motor rotation speed, and reduced costs.
Smart Images
Figure CN223161011U_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to an improved invention of a honeycomb paperboard processing device, and particularly to a honeycomb paperboard cutting mechanism. Background Art
[0002] Honeycomb paperboard is composed of a continuous honeycomb paper core and a face paper. The continuous honeycomb paperboard is then cut into unit honeycomb paperboards of the required specifications by a cutting mechanism. Currently, there are two cutting methods for honeycomb paperboard cutting mechanisms, one is spiral fly cutter cutting, and the other is circular knife cutting.
[0003] For spiral fly cutter cutting, the upper knife and the lower knife are installed on a rotating shaft. The upper knife and the lower knife engage once when the rotating shaft rotates one week, and the honeycomb paperboard is cut when the upper knife and the lower knife engage. The cutting speed is fast and it can be used for high-speed machines, but it is only used for cutting thin honeycomb paperboards and cannot be used for cutting thick honeycomb paperboards. If the honeycomb paperboard is too thick, problems such as non-inclined and non-flat cutting surfaces and damaged cutting knives will occur.
[0004] For circular knife cutting, the honeycomb paperboard is cut by a circular knife that moves horizontally. It can cut both thick and thin boards, but the cutting speed is slow and it is not suitable for high-speed machines. Summary of the Invention
[0005] In view of the technical problems existing in the background art, the technical problem to be solved by the present invention is to provide a honeycomb paperboard cutting mechanism that is suitable for cutting both thick and thin boards and has a fast cutting speed.
[0006] To solve the above technical problems, the present invention adopts the following technical solutions: This kind of honeycomb paperboard cutting mechanism is characterized in that: it includes a cutting knife, a bottom knife seat, a first driving component for driving the cutting knife to lift, and a second driving component for driving the cutting knife and the bottom knife seat to move back and forth;
[0007] The cutting knife is horizontally arranged transversely and installed on the upper knife holder, and the cutting knife corresponds to the bottom knife seat up and down;
[0008] The first driving component includes a first cam and a first connecting rod. The first cam is rotatably installed on the machine frame. One end of the first connecting rod is rotatably connected to the first cam, and the other end of the first connecting rod is rotatably connected to the upper knife holder;
[0009] The second driving component includes a second cam and a second connecting rod. The second cam is rotatably installed on the machine frame. One end of the second connecting rod is rotatably connected to the second cam, and the other end of the second connecting rod is rotatably connected to the connecting seat. A first guide rail horizontally arranged longitudinally is installed on the machine frame. The connecting seat is slidably arranged on the first guide rail. A second guide rail vertically arranged is provided on the connecting seat. The upper knife holder is slidably arranged on the second guide rail. The bottom knife seat is connected to the connecting seat;
[0010] During cutting, the first driving component drives the cutting knife to move downward along the second guide rail, and the second driving component drives the cutting knife, the bottom knife seat and the cardboard to move forward synchronously; after cutting is completed, the first driving component drives the cutting knife to move upward along the second guide rail and be higher than the cardboard, and then the second driving component drives the cutting knife and the bottom knife seat to retreat and reset.
[0011] In the present invention, during cutting, the cutting knife moves forward together with the cardboard, and the cardboard is stationary relative to the cutting knife, so the cutting will not be affected by the movement of the cardboard, the cut surface is flat, and the cutting of both thin and thick boards can be satisfied at the same time; at the same time, the cutting knife cuts vertically relative to the cardboard, with a short stroke and a fast cutting speed, meeting the production requirements of high-speed machines. In addition, the circumferential rotation of the cam can drive the cutting knife to move up and down or back and forth reciprocally, so the motor only needs to rotate in one direction, without the need for alternating forward and reverse rotations, thus greatly increasing the rotation speed. The faster the cam rotates, the faster the cutting knife moves up and down or back and forth, meeting the requirements of high-speed production.
[0012] Preferably, the first cam is connected to the first motor that drives its rotation, and the second cam is connected to the second motor that drives its rotation. The lifting and forward and backward movement of the cutting knife are controlled by different motors, with a more streamlined structure and more conducive to control.
[0013] Preferably, the first motor is connected to a first transmission shaft. There are multiple groups of the first driving components. The first cam of each group of the first driving components is rotatably installed on the machine frame through a first cam shaft, and the first cam shaft is in transmission connection with the first transmission shaft through a first synchronous belt.
[0014] Preferably, the second motor is connected to a second transmission shaft. There are multiple groups of the second driving components. The second cam of each group of the second driving components is rotatably installed on the machine frame through a second cam shaft, and the second cam shaft is in transmission connection with the second transmission shaft through a second synchronous belt. The upper knife rest is stable during heavy cutting. The weight of the upper knife rest is distributed to multiple groups of the first driving components, and the upper knife rest is better supported and runs more stably; similarly, multiple groups of the second driving components push the upper knife rest to move horizontally and longitudinally, evenly distributing the weight of the upper knife rest and making the movement of the knife rest smoother.
[0015] Preferably, a third guide rail horizontally arranged longitudinally is installed on the machine frame, the bottom knife seat is slidably arranged on the third guide rail, and the third guide rail is parallel to the first guide rail;
[0016] Both ends of the bottom knife seat are connected to the connection seat through connecting arms.
[0017] Preferably, a shock-absorbing support member is provided behind the cutting knife and the bottom knife seat. The support member is close to the cutting station. The support member includes an upper pressure roller and a lower supporting roller. The lower supporting roller is connected to a motor. The upper pressure roller is installed on a swing arm, and the swing arm is swingably arranged on the frame through a rotating shaft. The shock-absorbing support member not only plays a role in pulling the cardboard, but also clamps the cardboard during cutting to play a role in shock absorption and support, improving the cutting accuracy.
[0018] Preferably, both the first cam and the second cam are in transmission connection with the third motor. The first cam and the second cam share one motor, which reduces the cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a schematic diagram of the cutting knife of the present invention in the high position.
[0020] Figure 2 It is a schematic diagram of the cutting knife of the present invention in the middle position.
[0021] Figure 3 It is a schematic diagram of the cutting knife of the present invention in the low position.
[0022] Figure 4 It is a top view of the present invention.
[0023] Reference numerals: 1, first connecting rod; 2, first cam; 3, first guide rail; 4, connecting seat; 5, second guide rail; 6, connecting arm; 7, second connecting rod; 8, second cam; 9, third guide rail; 10, bottom knife seat; 11, upper pressure roller; 12, lower supporting roller; 13, first synchronous belt; 14, second synchronous belt; 15, first motor; 16, second motor; 17, first transmission shaft; 18, second transmission shaft; 19, honeycomb cardboard; 20, cutting knife; 21, first camshaft; 22, upper knife holder; 23, swing arm. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0024] The following describes the embodiments of the present invention, the relevant details and working principles in combination with the drawings. This honeycomb cardboard cutting mechanism includes a cutting knife 20, a bottom knife seat 10, a first driving member for driving the cutting knife to lift, and a second driving member for driving the cutting knife 20 and the bottom knife seat 10 to reciprocate back and forth; the cutting knife 20 is horizontally arranged transversely and installed on the upper knife holder 22. The cutting knife 20 corresponds to the bottom knife seat 10 up and down. The bottom knife seat 10 protects the cutting edge of the cutting knife 20. During cutting, the cutting knife 20 is inserted into the bottom knife seat 10. At the same time, the bottom knife seat 10 is used to support and hold the cardboard, and the cardboard is stressed, which is beneficial for the cutting knife 20 to cut the cardboard.
[0025] The first driving component includes a first cam 2 and a first connecting rod 1. The first cam 2 is rotatably mounted on the frame and driven to rotate by a first motor 15. One end of the first connecting rod 1 is rotatably connected to the first cam 2, and the other end of the first connecting rod 1 is rotatably connected to the upper tool rest 22. The second driving component includes a second cam 8 and a second connecting rod 7. The second cam 8 is rotatably mounted on the frame and driven to rotate by a second motor 16. One end of the second connecting rod 7 is rotatably connected to the second cam 8, and the other end of the second connecting rod 7 is rotatably connected to the connecting seat 4. A first guide rail 3 horizontally arranged longitudinally is mounted on the frame. The connecting seat 4 is slidably arranged on the first guide rail 3. A second guide rail 5 vertically arranged is provided on the connecting seat 4. The upper tool rest 22 is slidably arranged on the second guide rail 5. The bottom tool seat 10 is connected to the connecting seat 4. In this embodiment, the first cam and the second cam are driven by two motors, that is, the lifting and forward and backward movement of the cutter 20 are respectively controlled by two motors, meeting the cutting requirements of cardboard with different thicknesses and lengths. The structure driven by two motors is more streamlined, and at the same time, it is more conducive to controlling the lifting and forward and backward movement of the cutter. However, it does not exclude that the first cam and the second cam are driven by one motor. One motor can simultaneously drive the first cam and the second cam to rotate through transmission components such as transmission belts and gears, which has a lower cost compared to two motors.
[0026] Due to the heavy weight of the upper tool rest, it is driven by a set of first driving components and second driving components. The support and acting force on the upper tool rest are insufficient, resulting in problems such as the deviation of the movement of the upper tool rest and the deformation of the connecting rod. To solve this problem, the first motor 15 is connected to a first transmission shaft 17. There are multiple sets of the first cam 2 components, and at least three sets are preferred. Four sets are provided in the figure. The first cam 2 of each set of the first driving components is rotatably installed on the machine frame through a first cam shaft 21, and the first cam shaft 21 is in transmission connection with the first transmission shaft 17 through a first synchronous belt 13. The upper tool rest 22 is connected to the four sets of first driving components. The four sets of first driving components share the weight of the upper tool rest. The weight borne by each set of the first cam 2 and the first connecting rod 1 is reduced. The upper tool rest 22 is better supported, and the power acting on the upper tool rest is sufficient and stable, enabling the upper tool rest to smoothly lift and lower along the second guide rail 5. To further reduce the burden on the first cam 2 and the first connecting rod 1, each set of the first driving components includes two first cams 2 and two first connecting rods 1. The first connecting rods 1 are paired with the first cams 2 one by one. The two first cams 2 are connected to a first cam shaft 21. That is, the first synchronous belt 13 drives the first cam shaft 21 to rotate, and the first cam shaft drives the two first cams 2 to rotate synchronously, so that the two first connecting rods 1 act on the upper tool rest 22 at the same time. In this way, the four sets of first driving components are equivalent to having eight first cams 2 and eight first connecting rods 1. The second motor 16 is connected to a second transmission shaft 18. There are multiple sets of the second driving components. The second cam 8 of each set of the second driving components is rotatably installed on the machine frame through a second cam shaft, and the second cam shaft is in transmission connection with the second transmission shaft 18 through a second synchronous belt 14. Similarly, four sets of the second driving components are provided, which is equivalent to having eight second cams 8 and eight second connecting rods 7. The horizontal and longitudinal movement of the upper tool rest is also well supported, and there is sufficient power to enable it to smoothly move along the first guide rail 3. The weight of the bottom tool holder 10 is light. Both ends of the bottom tool holder 10 are connected to the connecting seat 4 through connecting arms 6. A third guide rail 9 is horizontally installed longitudinally on the machine frame. The bottom tool holder 10 is slidably arranged on the third guide rail 9. The third guide rail 9 is parallel to the first guide rail 3. The two connecting arms 6 can support the bottom tool holder 10 and drive the bottom tool holder 10 to smoothly move along the third guide rail 9.
[0027] A shock-absorbing support component is provided behind the cutting tool 20 and the bottom tool holder 10. The support component is close to the cutting station. The support component includes an upper pressure roller 11 and a lower supporting roller 12. The lower supporting roller 12 is connected to a motor, that is, the motor drives the lower supporting roller 12 to rotate actively. The upper pressure roller 11 is installed on a swing arm 23. The swing arm is swingably arranged on the machine frame through a rotating shaft. The upper pressure roller 11 is a rubber roller and has elasticity to increase the friction with the honeycomb cardboard. The honeycomb cardboard 19 moves forward under the clamping and traction of the upper pressure roller 11 and the lower supporting roller 12. The shock-absorbing support component not only plays a role in pulling the cardboard, but also clamps the cardboard during cutting to play a role in shock absorption and support, improving the cutting accuracy.
[0028] During cutting, the first driving component drives the cutter 20 to move downward along the second guide rail 5, and the second driving component drives the cutter 20 and the bottom knife seat 10 to move forward synchronously with the honeycomb paperboard; after cutting is completed, the first driving component drives the cutter 20 to move upward along the second guide rail 5 and higher than the honeycomb paperboard, and then the second driving component drives the cutter 20 and the bottom knife seat 10 to retreat and reset. The working principle of the preferred embodiment is further explained with reference to the accompanying drawings: the upper pressure roller 11 and the lower support roller 12 clamp the honeycomb cardboard 19 and convey it forward. When the honeycomb cardboard 19 is conveyed forward to a set length, the first motor 15 drives the first transmission shaft 17 to rotate, driving the first cam 2 to rotate, and pushing the upper tool holder 22 and the cutter 20 to move downward along the second guide rail 5 through the first connecting rod 1. The second motor 16 drives the second transmission shaft 18 to rotate, driving the second cam 8 to rotate, and pulling the connecting seat 4, the upper tool holder, the cutter 20 and the bottom knife seat 10 to move forward along the first guide rail 3 and the third guide rail 9 through the second connecting rod 7. The forward movement speed of the cutter 20 is consistent with the conveying speed of the honeycomb cardboard 19, so that the cutter 20 moves forward along the honeycomb cardboard 19 during the downward cutting process. The honeycomb cardboard 19 is in a stationary state relative to the cutter 20. Therefore, the cutter 20 moves downward to cut the honeycomb cardboard 19 without being affected by the movement of the cardboard, and the cut surface remains flat, which can meet the cutting needs of thin and thick plates at the same time. At the same time, the cutter 20 cuts vertically relative to the cardboard, has a short stroke, and a fast cutting speed, which meets the production requirements of high-speed machines. Figure 1-3, the first motor 15 drives the first cam 2 to rotate. When the connection between the first connecting rod 1 and the first cam 2 is at the highest point of the first cam 2, at this time, the cutter 20 moves up to the highest position. As the first cam 2 rotates clockwise, the connection between the first connecting rod 1 and the first cam 2 gradually moves downward, and the first connecting rod 1 pushes the cutter 20 to move downward; when it rotates to the connection between the first connecting rod 1 and the first cam 2 at the lowest point of the first cam 2, at this time the cutter 20 moves down to the lowest position, and the honeycomb cardboard 19 is cut off; as the first cam 2 continues to rotate, the first cam 2 drives the first connecting rod 1 to gradually move up until the connection between the first connecting rod 1 and the first cam 2 rotates to the highest point of the first cam 2. At this time, the cutter 20 moves up to the highest position, that is, after the cutter 20 cuts off the honeycomb cardboard 19, the first connecting rod 1 pulls the cutter 20 to move up along the second guide rail 5 and returns to the original position. When the first cam 2 rotates one week, it drives the cutter 20 to cut once. The first motor 15 drives the first cam 2 to rotate in a cycle, and then drives the cutter 20 to reciprocate up and down to achieve cutting. The circumferential rotation of the first cam 2 can drive the cutter 20 to move up and down reciprocally. Therefore, the first motor 15 only needs to rotate in one direction and does not need to rotate forward and reverse alternately, thus greatly improving the rotation speed. The faster the first cam 2 rotates, the faster the cutter 20 moves up and down, meeting the requirements of high-speed production. Similarly, the second motor 16 can also rotate circumferentially in the same direction, and drives the connecting seat 4 and the cutter 20 to move back and forth through the second cam 8; because the speed required for the cutter 20 to move back and forth is slower, the second motor 16 can also rotate forward and reverse alternately to make the second cam 8 drive the cutter 20 to move back and forth.
Claims
1. A honeycomb cardboard cutting mechanism, characterized in that: It includes a cutter, a bed knife seat, a first driving component for driving the cutter to move up and down, and a second driving component for driving the cutter and the bed knife seat to move back and forth; The cutter is horizontally arranged and mounted on the upper knife holder, and the cutter corresponds to the bottom knife seat in the upper and lower directions; The first driving component includes a first cam and a first connecting rod, wherein the first cam is rotatably mounted on the frame, one end of the first connecting rod is rotatably connected to the first cam, and the other end of the first connecting rod is rotatably connected to the upper tool holder; The second driving component includes a second cam and a second connecting rod, the second cam is rotatably mounted on the frame, one end of the second connecting rod is rotatably connected to the second cam, and the other end of the second connecting rod is rotatably connected to the connecting seat, a first guide rail arranged longitudinally and horizontally is installed on the frame, the connecting seat is slidably arranged on the first guide rail, a second guide rail arranged vertically is provided on the connecting seat, the upper knife holder is slidably arranged on the second guide rail, and the bottom knife holder is connected to the connecting seat; During cutting, the first driving component drives the cutter to move downward along the second guide rail, and the second driving component drives the cutter, the bottom knife seat and the cardboard to move forward synchronously; after cutting is completed, the first driving component drives the cutter to move upward along the second guide rail and higher than the cardboard, and then the second driving component drives the cutter and the bottom knife seat to retreat and reset.
2. The honeycomb cardboard cutting mechanism according to claim 1, characterized in that: The first cam is connected to a first motor that drives the first cam to rotate, and the second cam is connected to a second motor that drives the first cam to rotate.
3. The honeycomb paperboard cutting mechanism according to claim 2, wherein: The first motor is connected to a first transmission shaft, and the first driving components are provided in multiple groups. The first cam of each group of first driving components is rotatably mounted on the frame via a first camshaft, and the first camshaft is connected to the first transmission shaft via a first synchronous belt.
4. The honeycomb paperboard cutting mechanism according to claim 2, characterized in that: The second motor is connected to the second transmission shaft, and the second driving components are provided in multiple groups. The second cam of each group of second driving components is rotatably mounted on the frame through the second camshaft, and the second camshaft is connected to the second transmission shaft through a second synchronous belt.
5. The honeycomb paperboard cutting mechanism according to claim 1, wherein: A third guide rail arranged longitudinally and horizontally is installed on the frame, and the bottom knife seat is slidably arranged on the third guide rail, and the third guide rail is parallel to the first guide rail; Both ends of the bottom knife seat are connected to the connecting seat through connecting arms.
6. The honeycomb paperboard cutting mechanism according to claim 1, characterized in that: A shock-absorbing support component is provided behind the cutter and the bottom knife seat, and the support component is close to the cutting station. The support component includes an upper pressure roller and a lower roller. The lower roller is connected to the motor, and the upper pressure roller is installed on the swing arm. The swing arm is set on the frame through the swing of the rotating shaft.
7. The honeycomb paperboard cutting mechanism according to claim 1, characterized in that: The first cam and the second cam are both transmission-connected to the third motor.