A slitting cutter mechanism capable of safely and quickly combining cutters

Abstract

The application discloses a slitting cutter mechanism capable of safely and quickly closing knives and relates to the technical field of slitting cutters. The slitting cutter mechanism capable of safely and quickly closing knives comprises an upper knife blade, an upper knife shaft, a lower knife blade, a lower knife shaft, a motor, a knife withdrawal linkage unit and a knife closing execution unit. The lower knife shaft is fixedly connected to the main shaft of the motor. The lower knife blade is fixedly connected to the lower knife shaft. The upper knife shaft is located above the lower knife blade, and the upper knife blade is connected to the upper knife shaft. When the motor is in a non-working state, the knife closing execution unit drives the upper knife blade to lift up and drives the knife withdrawal linkage unit to push the motor to retreat until the lower knife blade is separated from the upper knife blade. The knife closing execution unit and the knife withdrawal linkage unit are matched, two action modes with time difference are adopted, and the knife closing action is completed in steps, so that the upper knife blade can be prevented from colliding with the circumferential surface of the lower knife blade due to elastic rebound, the blade edge can be prevented from being broken, worn or broken, and the service life of the cutter is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of slitting tools, and in particular to a slitting tool mechanism capable of safely and quickly closing the tool. Background Art

[0002] In a continuous glass fiber thermoplastic prepreg composite production line, the slitting process is a key step in the production process. Its slitting effect directly affects the final product quality and production efficiency. The slitting tool used in the slitting process mainly uses two single-edged disc blades to cut the product. The slitting tool performs the slitting operation through the following three key actions:

[0003] (1) During the slitting operation, the upper and lower blades fit tightly together, and the lower blade rotates in the same direction as the product's forward direction. The speed can be flexibly adjusted according to demand, accurately matching the production line's operating speed.

[0004] (2) After the slitting task is completed, the upper blade will be lifted to the highest position and completely separated from the lower blade to avoid collision and wear of the blades when not in operation;

[0005] (3) When entering a new round of slitting preparation, the upper blade will drop to the lowest limit position and fit together with the lower blade again, preparing for the subsequent slitting work.

[0006] Based on the slitting process of the above-mentioned slitting tool, the inventor believes that the above-mentioned operation has the following technical problems: in the non-working state, when the upper and lower blades are separated, the edge of the upper blade will rebound to the inside of the lower blade due to its own elasticity; if the upper blade cuts directly at this time, the upper blade will collide with the peripheral surface of the lower blade and damage the blade, which may seriously cause the equipment to shut down and affect the continuity and stability of the slitting operation.

[0007] Therefore, how to solve the above problems is a technical problem that is urgently needed to be solved by those skilled in the art.

[0008] The information disclosed in this background technology section is only intended to enhance understanding of the overall background of the invention and should not be regarded as an admission or any form of suggestion that the information constitutes the prior art already known to a person skilled in the art. Summary of the Invention

[0009] In response to the above technical problems, an embodiment of the present invention provides a slitting tool mechanism that can close the blade safely and quickly, so as to solve the problems raised in the above background technology.

[0010] The present invention provides the following technical solution: a slitting tool mechanism capable of safely and quickly closing the blade, comprising: an upper blade, an upper blade shaft, a lower blade, a lower blade shaft, a motor, a blade retraction linkage unit and a blade closing execution unit;

[0011] The lower cutter shaft is fixedly connected to the main shaft of the motor; the lower blade is fixedly connected to the lower cutter shaft;

[0012] The upper blade shaft is located above the lower blade, and the upper blade is connected to the upper blade shaft;

[0013] When the motor is in a non-working state, the knife closing execution unit drives the upper blade to lift and drives the knife retraction linkage unit to push the motor backward until the lower blade is separated from the upper blade;

[0014] When the motor is in working state, the knife closing execution unit drives the upper blade to descend, and drives the knife closing execution unit to push the motor forward until the lower blade is in contact with the upper blade.

[0015] Preferably, the tool retraction linkage unit comprises: a lower tool holder, a lower tool base, a return compression spring, a movable tool holder and a bearing;

[0016] The lower knife base is tubular; the lower knife base is fixed to the lower knife seat; the inner cavity wall of the lower knife base is provided with an annular accommodating groove along its axial direction;

[0017] The movable knife seat is tubular; the movable knife seat is coaxially connected to the outer side of the lower knife shaft through a bearing, and the movable knife seat is sleeved in the inner cavity of the lower knife base; the outer peripheral wall of the movable knife seat is provided with a blocking piece at the position section located in the accommodating groove;

[0018] The return compression spring is sleeved on the outside of the movable knife seat and is located in the accommodating groove; one end of the return compression spring is fixedly connected to the blocking piece; and the other end of the return compression spring is fixedly connected to the groove wall of the accommodating groove.

[0019] Preferably, the knife closing execution unit includes: a knife lowering driving arm, a cylinder, a damping ring and a limit block;

[0020] The front end of the lower knife driving arm is hinged on the lower knife seat; the top surface of the lower knife driving arm is hinged with a damping ring near the front end through a hinge seat;

[0021] The bottom of the cylinder body of the air cylinder is hinged to the rear end of the lower knife driving arm;

[0022] The limit block is arranged above the cylinder through a fixing frame; the limit block can rotate relative to the fixing frame;

[0023] The driving rod of the cylinder is hinged to the limit block; the rear end of the upper cutter shaft is fixed to the limit block.

[0024] Preferably, a push plate is fixed on a side of the movable knife seat close to the motor; the motor is fixed on the push plate; and one side surface of the push plate is in contact with the damping ring.

[0025] Preferably, the limit block is connected to the fixing frame via a limit pin; and the driving rod of the cylinder is hinged to a side of the limit block away from the limit pin.

[0026] Preferably, a cover shell is coaxially fixed to the lower knife shaft; the cover shell is tubular and surrounds the outer side of the lower knife base.

[0027] Preferably, the upper blade and the lower blade are both single-edged disc-shaped blades.

[0028] An embodiment of the present invention provides a slitting tool mechanism that can close the knife safely and quickly, and has the following beneficial effects: the present invention cooperates with the knife-retracting linkage unit and the knife-closing execution unit, adopts two action modes with a time difference regularity, and completes the knife-closing action in steps, which can avoid the upper blade from colliding with the peripheral surface of the lower blade due to elastic rebound, prevent the blade from cracking, wearing or breaking, and extend the service life of the tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a structural diagram of the first aspect of the present invention;

[0030] Figure 2 This is a structural diagram of the second angle of the present invention;

[0031] Figure 3 For the present invention Figure 2 Schematic diagram of the cross-sectional structure in the AA direction;

[0032] Figure 4 For the present invention Figure 3 A partial enlarged view of B. DETAILED DESCRIPTION

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making any creative efforts shall fall within the scope of protection of the present invention.

[0034] See Figures 1-4 .

[0035] In response to the problems mentioned in the above background technology, the embodiments of the present invention provide a slitting tool mechanism that can safely and quickly close the blade to solve the above technical problems. The technical solution is as follows:

[0036] A slitting tool mechanism capable of safely and quickly closing the blade comprises: an upper blade 311, an upper blade shaft 300, a lower blade 112, a lower blade shaft 111, a motor 101, a blade retraction linkage unit and a blade closing execution unit;

[0037] The lower cutter shaft 111 is fixedly connected to the main shaft of the motor 101; the lower blade 112 is fixedly connected to the lower cutter shaft 111;

[0038] The upper blade shaft 300 is located above the lower blade 112, and the upper blade 311 is connected to the upper blade shaft 300;

[0039] When the motor 101 is in a non-working state, the knife closing execution unit drives the upper blade 311 to lift, and drives the knife retraction linkage unit to push the motor 101 backward until the lower blade 112 is separated from the upper blade 311;

[0040] When the motor 101 is in the working state, the knife closing execution unit drives the upper blade 311 to descend, and drives the knife closing execution unit to push the motor 101 forward until the lower blade 112 is in contact with the upper blade 311.

[0041] It should be noted that the above-mentioned method for solving the problem uses two steps with a regular time difference to complete the knife closing action step by step, which can avoid the upper blade from damaging the blade edge due to elastic rebound and collision with the peripheral surface of the lower blade.

[0042] In this embodiment, the knife retraction linkage unit includes: a lower knife seat 100, a lower knife base 121, a return compression spring 132, a movable knife seat 131 and a bearing 133;

[0043] The lower knife base 121 is tubular; the lower knife base 121 is fixed to the lower knife seat 100; the specific shape and structure of the lower knife seat 100 are not further limited; the inner wall of the lower knife base 121 is provided with an annular accommodating groove 121-1 along its axial direction;

[0044] The movable knife seat 131 is tubular; the movable knife seat 131 is coaxially connected to the outer side of the lower knife shaft 111 through a bearing 133, and the movable knife seat 131 is sleeved in the inner cavity of the lower knife base 121; the outer peripheral wall of the movable knife seat 131 is provided with a blocking piece 131-1 at the position section located in the accommodating groove 121-1;

[0045] The return compression spring 132 is sleeved on the outside of the movable knife seat 131 and is located in the accommodating groove 121-1; one end of the return compression spring 132 is fixedly connected to the blocking piece 131-1; the other end of the return compression spring 132 is fixedly connected to the groove wall of the accommodating groove 121-1.

[0046] Under the action of the spring force of the return compression spring 132 , the movable knife seat 131 drives the upper blade 311 to naturally move away from the lower blade 112 , so that the upper blade 311 and the lower blade 112 are in a separated state.

[0047] In this embodiment, the knife closing execution unit includes: a knife lowering driving arm 203, a cylinder 200, a damping ring 213 and a limit block 322;

[0048] The front end of the lower knife driving arm 203 is hinged on the lower knife seat 100; a damping ring 213 is hinged on the top surface of the lower knife driving arm 203 near the front end through the hinge seat 203-1;

[0049] The bottom of the cylinder 200 is hinged to the rear end of the lower knife driving arm 203;

[0050] The limit block 322 is connected to the upper part of the cylinder 200 via a fixing frame; the limit block 322 can rotate relative to the fixing frame;

[0051] The driving rod of the cylinder 200 is hinged to the limit block 322 ; the rear end of the upper cutter shaft 300 is fixed to the limit block 322 .

[0052] In this embodiment, a push plate 141 is fixed to a side of the movable blade holder 131 close to the motor 101 ; the motor 101 is fixed to the push plate 141 ; and one side of the push plate 141 is in contact with the damping ring 213 .

[0053] In this embodiment, the limit block 322 is connected to the fixing frame via the limit pin 322 - 1 ; the driving rod of the cylinder 200 is hinged to the side of the limit block 322 away from the limit pin 322 - 1 .

[0054] Among them, the fixing frame structure is not shown in the various drawings; the structure and shape of the fixing frame are not specifically limited and can be specifically set according to actual conditions as long as the limit block 322 can be assembled.

[0055] In this embodiment, a cover shell 111 - 2 is coaxially fixed to the lower knife shaft 111 ; the cover shell 111 - 2 is tubular and surrounds the outer side of the lower knife base 121 .

[0056] The cover 111-2 is tubular and surrounds the outer side of the lower knife base 121. Its main function is to protect and shield the lower knife base 121 and related components.

[0057] In this embodiment, the upper blade 311 and the lower blade 112 are both single-edged disc-shaped blades; a lower blade pressing plate 113 is provided on the outer side of the lower blade 112 .

[0058] The operating method of a slitting tool mechanism that can safely and quickly close the blade provided by an embodiment of the present invention is as follows:

[0059] (1) Work start-up process - upper blade descends

[0060] The cylinder 200 starts to shrink; since the center of gravity of the upper knife shaft 300 and the upper blade 311 is downward, and under the action of the elastic force of the return compression spring 132, the movable knife seat 131 does not move temporarily.

[0061] The driving rod of the cylinder 200 pulls the limit block 322 to rotate downward. Since the rear end of the upper cutter shaft 300 is fixed to the limit block 322, the upper cutter shaft 300 is driven to descend, and the upper blade 311 begins to descend from the raised upper position along with the upper cutter shaft 300.

[0062] As the upper blade shaft 300 descends, when it reaches the preset rotation angle of the limit block 322 relative to the fixed frame, the upper blade shaft 300 is constrained and cannot move further downward, and the upper blade 311 stops descending. At this time, the upper blade 311 is in a position close to the lower blade 112 but not yet in contact.

[0063] (2) Work start-lower blade closes forward

[0064] The cylinder 200 continues to contract, and the rear end of the lower knife driving arm 203 hinged to the bottom of the cylinder body of the cylinder 200 is subjected to force, causing the lower knife driving arm 203 to lift upward with the point hinged to the front end of the lower knife seat 100 as the fulcrum; at the same time, the damping ring 213 moves upward and compresses the return compression spring 132.

[0065] The reaction force generated by the compression of the return compression spring 132 pushes the movable knife seat 131 to overcome the resistance and move forward. Since the movable knife seat 131 is coaxially connected to the outer side of the lower knife shaft 111 through the bearing 133, the forward movement of the movable knife seat 131 synchronously drives the lower knife shaft 111 and the lower blade 112 fixed to the lower knife shaft 111 to move forward until the lower blade 112 is tightly fitted and pressed against the upper blade 311, forming a shear force.

[0066] At the same time, the motor 101 starts working, driving the lower knife shaft 111 to rotate. The running direction of the lower blade 112 is consistent with the forward direction of the product. Its speed can be adjusted at will according to the running speed of the production line to complete the slitting work.

[0067] (3) End of work - blade separation and reset

[0068] When the cutting work is completed and the equipment enters the non-working state, the cylinder 200 starts to extend, the lower knife driving arm 203 descends, and the damping ring 213 no longer compresses the return compression spring 132; the return compression spring 132 recovers its deformation, pushing the movable knife seat 131 to move in the opposite direction, driving the lower knife shaft 111 and the lower blade 112 to retreat backward, and the lower blade 112 is separated from the upper blade 311.

[0069] At the same time, the driving part on the retraction linkage unit drives the front end of the upper knife shaft 300 to lift again, and the upper blade 311 returns to the state of being lifted to the upper high position. The edge of the blade bounces back to the inside of the lower blade due to its own elasticity, and the equipment returns to its initial non-working state, ready for the next cutting work.

[0070] An embodiment of the present invention provides a slitting tool mechanism that can close the knife safely and quickly, and has the following beneficial effects: the present invention cooperates with the knife-retracting linkage unit and the knife-closing execution unit, adopts two action modes with a time difference regularity, and completes the knife-closing action in steps, which can avoid the upper blade from colliding with the peripheral surface of the lower blade due to elastic rebound, prevent the blade from cracking, wearing or breaking, and extend the service life of the tool.

[0071] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units. They may be located in one place or distributed across multiple network units. Some or all of the modules may be selected based on actual needs to achieve the objectives of this embodiment.

[0072] In the present invention, unless otherwise clearly stipulated and limited, the terms "installation", "setting", "connection", "fixation", "screw-on" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be internal connectivity of an element or interaction between elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to specific circumstances.

[0073] It is understandable that those skilled in the art can make equivalent substitutions or changes based on the technical solutions and concepts of the present invention, and all these changes or substitutions should fall within the scope of protection of the claims attached to the present invention.

Claims

1. A slitting tool mechanism that can close the knife safely and quickly, characterized in that: include: Upper blade, upper cutter shaft, lower blade, lower cutter shaft, motor, cutter retraction linkage unit and cutter closing execution unit; The lower cutter shaft is fixedly connected to the main shaft of the motor; the lower blade is fixedly connected to the lower cutter shaft; The upper blade shaft is located above the lower blade, and the upper blade is connected to the upper blade shaft; When the motor is in a non-working state, the knife closing execution unit drives the upper blade to lift and drives the knife retraction linkage unit to push the motor backward until the lower blade is separated from the upper blade; When the motor is in working state, the knife closing execution unit drives the upper blade to descend, and drives the knife closing execution unit to push the motor forward until the lower blade fits with the upper blade; The tool retraction linkage unit includes: a lower tool holder, a lower tool base, a return compression spring, a movable tool holder and a bearing; The lower knife base is tubular; the lower knife base is fixed to the lower knife seat; the inner cavity wall of the lower knife base is provided with an annular accommodating groove along its axial direction; The movable knife seat is tubular; the movable knife seat is coaxially connected to the outer side of the lower knife shaft through a bearing, and the movable knife seat is sleeved in the inner cavity of the lower knife base; the outer peripheral wall of the movable knife seat is provided with a blocking piece at the position section located in the accommodating groove; The return compression spring is sleeved on the outside of the movable knife seat and is located in the accommodating groove; one end of the return compression spring is fixedly connected to the blocking piece; the other end of the return compression spring is fixedly connected to the groove wall of the accommodating groove; The knife closing execution unit includes: knife lowering driving arm, cylinder, damping ring and limit block; The front end of the lower knife driving arm is hinged on the lower knife seat; the top surface of the lower knife driving arm is hinged with a damping ring near the front end through a hinge seat; The bottom of the cylinder body of the air cylinder is hinged to the rear end of the lower knife driving arm; The limit block is arranged above the cylinder through a fixing frame; the limit block can rotate relative to the fixing frame; The driving rod of the cylinder is hinged to the limit block; the rear end of the upper cutter shaft is fixed to the limit block.

2. The slitting tool mechanism capable of fast and safe closing of the blade according to claim 1, characterized in that: A push plate is fixed on one side of the movable knife seat close to the motor, and the motor is fixed on the push plate; one side surface of the push plate contacts the damping ring.

3. The slitting tool mechanism capable of fast and safe closing of the blade according to claim 1, characterized in that: The limit block is connected to the fixing frame through a limit pin shaft; the driving rod of the cylinder is hinged to a side of the limit block away from the limit pin shaft.

4. The slitting tool mechanism capable of fast and safe closing of the blade according to claim 1, characterized in that: A cover shell is coaxially fixed on the lower knife shaft; the cover shell is tubular and surrounds the outer side of the lower knife base.

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