CN113998511A - Speed reduction impact following V angle method and speed reduction impact following V angle device - Google Patents
Speed reduction impact following V angle method and speed reduction impact following V angle device Download PDFInfo
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- CN113998511A CN113998511A CN202111307257.8A CN202111307257A CN113998511A CN 113998511 A CN113998511 A CN 113998511A CN 202111307257 A CN202111307257 A CN 202111307257A CN 113998511 A CN113998511 A CN 113998511A
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- 238000000034 method Methods 0.000 title claims abstract description 43
- 230000009467 reduction Effects 0.000 title claims abstract description 22
- 230000007246 mechanism Effects 0.000 claims abstract description 158
- 238000004080 punching Methods 0.000 claims abstract description 106
- 238000004804 winding Methods 0.000 claims description 19
- 238000007599 discharging Methods 0.000 claims description 6
- 230000003139 buffering effect Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 2
- 238000005520 cutting process Methods 0.000 description 9
- 239000003638 chemical reducing agent Substances 0.000 description 8
- 230000008569 process Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000003116 impacting effect Effects 0.000 description 4
- 238000003698 laser cutting Methods 0.000 description 4
- 230000003068 static effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H18/00—Winding webs
- B65H18/08—Web-winding mechanisms
- B65H18/10—Mechanisms in which power is applied to web-roll spindle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H23/00—Registering, tensioning, smoothing or guiding webs
- B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
- B65H23/26—Registering, tensioning, smoothing or guiding webs longitudinally by transverse stationary or adjustable bars or rollers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H26/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms
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Abstract
The embodiment of the invention provides a speed reduction following impact V angle method and a speed reduction following impact V angle device, and relates to the technical field of pole piece processing. The speed-reducing impact-following V-angle method comprises the following steps: acquiring the tape travelling speed of the pole piece and the running speed of a V-angle punching mechanism of the speed-reducing following V-angle device in real time; in a first preset time period of the pole piece tape transport, controlling the tape transport speed to be reduced from the initial tape transport speed to a first preset speed, and controlling the running speed to be increased to the first preset speed; in a second preset time period after the first preset time period of the pole piece tape transport, the pole piece and the V angle punching mechanism are controlled to run at the first preset speed, and the V angle punching mechanism is controlled to punch a V angle on the pole piece, so that the effect of reducing the load of the linear motor is achieved.
Description
Technical Field
The invention relates to the technical field of pole piece processing, in particular to a speed reduction following impact V angle method and a speed reduction following impact V angle device.
Background
In the lamination process in the lithium battery industry, the V-shaped cut corners of the pole pieces have the functions of preventing the pole pieces from falling powder and piercing a diaphragm, and the application is very wide.
The prior scheme is that a V-angle punching mechanism is fixed, a V-angle is punched after a pole piece is stopped and is stopped, and the speed of the whole machine is severely limited by the mode that the pole piece is stopped and the V-angle is punched; in order to solve the problem of the speed of the whole machine, a full-speed follow-up cutting mode is provided, namely, the pole piece continuously moves at a constant speed all the time, the linear motor drives the V-angle punching mechanism to follow the pole piece, the V angle is punched when the speed of the linear motor is consistent with that of the pole piece, and the load of the linear motor is larger when the running speed of the pole piece is fast.
Disclosure of Invention
The object of the present invention includes, for example, providing a deceleration following V-angle method capable of reducing the load of a linear motor.
The invention also aims to provide a speed-reducing impact-following V-angle device which can reduce the load of a linear motor.
Embodiments of the invention may be implemented as follows:
the embodiment of the invention provides a speed reduction and impact following V angle method, which is used for punching a V angle on a pole piece, and is applied to a speed reduction and impact following V angle device, wherein the speed reduction and impact following V angle device comprises an impact V angle mechanism and a linear motor, the linear motor is connected to the impact V angle mechanism and is used for driving the impact V angle mechanism to do linear reciprocating motion, and the method comprises the following steps:
acquiring the tape travelling speed of the pole piece and the running speed of a V-angle punching mechanism of the speed-reducing following V-angle device in real time;
in a first preset time period of pole piece tape transport, controlling the tape transport speed to be reduced from an initial tape transport speed to a first preset speed, and controlling the running speed to be increased to the first preset speed;
and in a second preset time period after the first preset time period of the traveling of the pole piece, controlling the pole piece and the V-angle punching mechanism to operate at the first preset speed, and controlling the V-angle punching mechanism to punch a V angle on the pole piece.
Optionally, the method includes: and in a third preset time period after the second preset time period of the pole piece tape transport, controlling the tape transport speed of the pole piece to be increased to the initial tape transport speed, and controlling the V-angle punching mechanism to reset.
Optionally, in a third preset time period after the second preset time period of the pole piece tape transport, controlling the tape transport speed of the pole piece to be increased to the initial tape transport speed, and controlling the V-angle punching mechanism to reset includes:
and in the third preset time period, controlling the running speed of the V-angle punching mechanism to be reduced to zero, reversely accelerating to a second preset speed, and then decelerating to zero to complete resetting.
Optionally, after the step of controlling the V-angle punching mechanism to reset, the step of obtaining the tape running speed of the pole piece and the running speed of the V-angle punching mechanism of the speed reduction pursuit V-angle punching device in real time is repeatedly executed until the step of controlling the V-angle punching mechanism to run at the first preset speed and controlling the V-angle punching mechanism to punch the V-angle on the pole piece is executed in the second preset time period after the first preset time period of the tape running of the pole piece.
Optionally, the speed-reducing following and impacting V-angle device includes a first buffer mechanism, and the first buffer mechanism is disposed at a pole piece feeding end of the speed-reducing following and impacting V-angle device and is configured to buffer a pole piece fed from the pole piece feeding end;
the first preset speed is smaller than a reference speed, and the initial tape moving speed is greater than the reference speed;
the method further comprises the following steps:
and in the third preset time period, when the tape moving speed is higher than the first preset speed and lower than the reference speed, controlling the first cache mechanism to operate so that the pole piece is cached in the first cache mechanism.
Optionally, the speed-reducing following and impacting V-angle device includes a second caching mechanism, and the second caching mechanism is disposed at a pole piece discharging end of the speed-reducing following and impacting V-angle device and is used for caching a pole piece discharged from the pole piece discharging end;
the method further comprises the following steps:
and when the tape transport speed is greater than the reference speed and less than the initial tape transport speed, controlling the second cache mechanism to operate so that the pole piece is cached in the second cache mechanism.
The embodiment of the invention also provides a speed-reducing impact-following V-angle device, which is used for realizing the speed-reducing impact-following V-angle method and comprises a linear motor, an impact V-angle mechanism, a driving piece, a controller and a plurality of conveying rollers;
the linear motor is connected with the V-angle punching mechanism and is used for driving the V-angle punching mechanism to do linear reciprocating motion;
the conveying rollers are used for conveying the pole pieces, and the driving piece is connected to one of the conveying rollers and used for driving the conveying rollers to rotate so as to drive the pole pieces to move;
the moving direction of the V-angle punching mechanism and the moving direction of the pole piece are positioned on the same straight line;
the controller is electrically connected with the linear motor and the driving piece respectively;
in the first preset time period, the controller is used for controlling the linear motor to operate so as to increase the operation speed of the V-angle punching mechanism to a first preset speed, and controlling the driving piece to operate so as to reduce the tape travelling speed of the pole piece from the initial tape travelling speed to the first preset speed;
and in a second preset time period after the first preset time period, the controller is used for respectively controlling the linear motor and the driving piece to operate so as to enable the V-angle punching mechanism and the pole piece to operate at a first preset speed, and controlling the V-angle punching mechanism to punch a V angle on the pole piece.
Optionally, in a third preset time period after the second preset time period, the controller is configured to control the linear motor to reduce the operating speed of the V-angle punching mechanism to a zero speed, accelerate the V-angle punching mechanism in a reverse direction to a second preset speed, and then decelerate the V-angle punching mechanism to the zero speed to complete resetting.
Optionally, the buffer device further comprises a first buffer mechanism, wherein the first buffer mechanism comprises a first buffer roller and a first lifting assembly;
the first buffer roller is arranged at the pole piece feeding end of the speed reduction and impact following V-angle device and used for winding the pole piece;
the first lifting assembly is connected to the first cache roller and used for driving the first cache roller to lift so as to cache the pole piece.
Optionally, the buffer device further comprises a second buffer mechanism, wherein the second buffer mechanism comprises a second buffer roller and a second lifting assembly;
the second buffer roller is arranged at the pole piece discharging end of the speed reduction and impact following V-angle device and used for winding the pole piece;
and the second lifting assembly is connected to the second cache roller and is used for driving the second cache roller to lift so as to cache the pole piece.
The speed reduction and impact following V angle method provided by the embodiment of the invention has the beneficial effects that: when a V angle needs to be punched on a pole piece, in a first preset time period of pole piece tape transport, the tape transport speed of the pole piece is controlled to be reduced from the initial tape transport speed to a first preset speed, and meanwhile, the running speed of the V angle punching mechanism is controlled to be increased to the first preset speed, at the moment, the tape transport speed of the pole piece is equal to the running speed of the V angle punching mechanism, the V angle punching mechanism is controlled to punch the V angle on the pole piece, and in the whole V angle punching process, the tape transport speed of the pole piece is reduced, so that the linear motor can drive the V angle punching mechanism to punch the V angle without reaching a very high speed, and the load of the linear motor is greatly reduced.
The speed reduction and impact following V-angle device provided by the embodiment of the invention has the beneficial effects that: when a V angle needs to be punched on a pole piece, in a first preset time period of pole piece tape transport, the controller is utilized to control the linear motor to operate so that the operation speed of the V angle punching mechanism is increased to a first preset speed, and meanwhile, the driving piece is controlled to operate so that the tape transport speed of the pole piece is reduced to the first preset speed from the initial tape transport speed, at the moment, the tape transport speed of the pole piece is equal to the operation speed of the V angle punching mechanism, then the V angle punching mechanism is controlled to punch the V angle on the pole piece, and in the whole V angle punching process, the tape transport speed of the pole piece is reduced so that the linear motor can drive the V angle punching mechanism to punch the V angle without reaching a very high speed, and the load of the linear motor is greatly reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a flow chart of a method for decelerating and following a V-angle in an embodiment of the present application;
FIG. 2 is a schematic structural diagram of a deceleration following impact V-angle device in an embodiment of the present application;
FIG. 3 is a speed-time diagram for showing the tape transport speed of the pole piece and the running speed of the V-angle punching mechanism in the embodiment of the present application;
FIG. 4 is a flowchart of the deceleration following impact V-angle method step S41 according to the embodiment of the present application;
FIG. 5 is a flowchart of steps S42 and S43 of the deceleration following impact V-angle method in the embodiment of the present application;
FIG. 6 is a schematic structural diagram for showing a positional relationship between a linear motor and a V-angle punching mechanism in an embodiment of the present application;
fig. 7 is a schematic structural diagram for showing a V-angle punching mechanism in the embodiment of the present application.
Icon: 100-deceleration following impact V-angle device; 110-a V-angle-of-attack mechanism; 111-angle of attack V motor; 112-eccentric wheel; a 113-V angle mold; 114-a speed reducer; 115-a reducer support; 116-a bearing; 117-link; 120-linear motor; 121-linear motor stator; 122-linear motor mover; 123-a mold support plate; 130-a driver; 140-a transfer roll; 150-a first caching mechanism; 151-first buffer roller; 160-a second caching mechanism; 161-a second buffer roller; 200-pole piece; 300-unwinding the reel; 400-winding the roll.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. indicate an orientation or a positional relationship based on that shown in the drawings or that the product of the present invention is used as it is, this is only for convenience of description and simplification of the description, and it does not indicate or imply that the device or the element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.
Furthermore, the appearances of the terms "first," "second," and the like, if any, are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.
In order to solve the above problem, the embodiment provides a speed reduction and impact following V angle method and a speed reduction and impact following V angle device 100, because the running speed of the original pole piece is very high, which causes a load of the linear motor to be large when the linear motor drives the V angle punching mechanism and the pole piece to keep the same speed to punch a V angle.
Referring to fig. 1-3, the speed-reducing impact-following V-angle method provided in this embodiment is used for punching a V-angle on a pole piece 200, and the method is applied to a speed-reducing impact-following V-angle device 100, where the speed-reducing impact-following V-angle device 100 includes an impact V-angle mechanism 110 and a linear motor 120, and the linear motor 120 is connected to the impact V-angle mechanism 110 and is used for driving the impact V-angle mechanism 110 to make a linear reciprocating motion, and the method includes:
and step S1, acquiring the tape moving speed V1 of the pole piece 200 and the running speed V2 of the impact V-angle mechanism 110 of the deceleration pursuit V-angle device 100 in real time.
In step S2, during a first preset time period t0-t1 during which the pole piece 200 is moving, the moving speed v1 is controlled to be reduced from the initial moving speed a0 to a first preset speed a2, and the running speed v2 is controlled to be increased to a first preset speed a 2.
Step S3, controlling the pole piece 200 and the V-angle punching mechanism 110 to operate at a first preset speed A2 in a second preset time period t1-t2 after the first preset time period t0-t1 when the pole piece 200 is carried, and controlling the V-angle punching mechanism 110 to punch a V angle on the pole piece 200.
When a V angle needs to be punched on the pole piece 200, in a first preset time period t0-t1 of the tape running of the pole piece 200, the tape running speed V1 of the pole piece 200 is controlled to be reduced from the initial tape running speed A0 to a first preset speed A2, meanwhile, the running speed V2 of the punching V angle mechanism 110 is controlled to be increased to a first preset speed A2, at the moment, the tape running speed V1 of the pole piece 200 is equal to the running speed V2 of the punching V angle mechanism 110, the punching V angle mechanism 110 is controlled to punch a V angle on the pole piece 200, and in the whole punching V angle process, due to the fact that the tape running speed V1 of the pole piece 200 is reduced, the linear motor 120 can drive the punching V angle mechanism 110 to punch a V angle without reaching a high speed, and the load of the linear motor 120 is greatly reduced.
In the embodiment, the first preset time period t0-t1 is preceded by an initial time period in which the pole piece 200 operates at the initial tape transport speed a0 and the impact V-angle mechanism 110 is kept in a static state; when the pole piece 200 needs to be subjected to V angle punching, the initial time period is started to reach a first preset time period t0-t1, the tape moving speed V1 of the pole piece 200 and the running speed V2 of the V angle punching mechanism 110 are controlled to be correspondingly adjusted to a first preset speed A2 in the first preset time period t0-t1, and the V angle punching is carried out in a second preset time period t1-t2 after the first preset time period t0-t 1. The real-time acquisition of the tape moving speed V1 of the pole piece 200 and the running speed V2 of the V-angle punching mechanism 110 in step S1 may be the real-time acquisition of a set speed sensor.
Please continue to refer to fig. 3-5. The speed-reducing impact-following V-angle method further comprises the following steps:
and step S4, controlling the tape moving speed V1 of the pole piece 200 to be lifted to the initial tape moving speed A0 and controlling the punching V angle mechanism 110 to reset in a third preset time period t2-t3 after the second preset time period t1-t2 of the tape moving of the pole piece 200.
It should be noted that resetting the V-angle punching mechanism 110 means resetting the V-angle punching mechanism 110 to a position where the initial time period is.
After step S4, the step of S1 is repeatedly performed until the step of S3 is performed.
the t0-t3 are one cycle, and the steps of S1-S4 are circulated, so that the pole piece 200 can be periodically punched at a V angle, and the punching efficiency of the V angle is improved.
The initial period, the first preset period t0-t1, the second preset period t1-t2 and the third preset period t2-t3 among the steps S1-S4 may be separate timer acquisitions or timer records built into the controller.
Further, step S4 includes:
and a substep S41, controlling the running speed V2 of the V-angle punching mechanism 110 to be reduced to zero and reversely accelerated to a second preset speed A3 in a third preset time period t2-t3, and then decelerating to zero to complete resetting.
In addition, the deceleration following impact V-angle device 100 comprises a first buffer mechanism, which is arranged at the feeding end of the pole piece 200 of the deceleration following impact V-angle device 100 and is used for buffering the pole piece 200 fed from the feeding end of the pole piece 200;
in the present embodiment, the first preset speed a2 is less than the reference speed a1, and the initial deck speed a0 is greater than the reference speed a 1.
The deceleration pursuit V-angle method further comprises the sub-steps of:
and a sub-step S42, when the tape speed v1 is greater than the first preset speed A2 and less than the reference speed A1, controlling the first buffer mechanism 150 to operate so that the pole piece 200 is buffered in the first buffer mechanism 150.
The reference speed a1 refers to a laser cutting speed, and there are two types of V-cutting modes in the industry, that is, a V-cutting mechanism 110 for cutting V angle and a V-cutting mechanism for cutting V angle, and since the V-cutting mechanism for laser is likely to generate beads, and is likely to pierce through a separator to cause short circuit, which affects the safety of the battery, the V-cutting mechanism 110 for cutting V angle is generally used for the positive electrode. Under the condition that the pole piece 200 is carried at the reference speed A1, namely the laser cutting speed, the pole piece 200 does not need to be cached; when pole piece 200 is being transported at a speed lower than reference speed a1, the excess pole piece 200 is buffered in the first buffer mechanism, protecting pole piece 200.
In addition, the deceleration following impact V-angle device 100 comprises a second buffer mechanism, which is arranged at the discharge end of the pole piece 200 of the deceleration following impact V-angle device 100 and is used for buffering the pole piece 200 discharged from the discharge end of the pole piece 200;
the deceleration pursuit V-angle method further comprises the sub-steps of:
and a sub-step S43, when the tape speed v1 is greater than the reference speed A1 and less than the initial tape speed A0, controlling the second buffer mechanism 160 to operate to buffer the pole piece 200 into the second buffer mechanism 160.
When pole piece 200 is being transported at a speed higher than reference speed a1, the extra pole piece 200 is buffered in second buffer mechanism 160, and pole piece 200 is protected.
The deceleration following V-angle device 100 provided in this embodiment is used for implementing the deceleration following V-angle method, and includes a linear motor 120, a V-angle punching mechanism 110, a driving member 130, a controller (not shown in the figure), and a plurality of conveying rollers 140; the linear motor 120 is connected to the V-angle punching mechanism 110, and is configured to drive the V-angle punching mechanism 110 to perform linear reciprocating motion; the conveying rollers 140 are used for conveying the pole pieces 200, and the driving member 130 is connected to one of the conveying rollers 140 and used for driving the conveying rollers 140 to rotate so as to drive the pole pieces 200 to move; the moving direction of the V-angle punching mechanism 110 and the moving direction of the pole piece 200 are positioned on the same straight line; the controller is electrically connected to the linear motor 120 and the driving member 130, respectively.
The controller is used for controlling the linear motor 120 to operate to increase the operation speed V2 of the impact V-angle mechanism 110 to a first preset speed A2 and controlling the driving element 130 to operate to reduce the tape moving speed V1 of the pole piece 200 from the initial tape moving speed A0 to a first preset speed A2 in a first preset time period t0-t 1; during a second preset time period t1-t2 after the first preset time period t0-t1, the controller is used for respectively controlling the linear motor 120 and the driving member 130 to operate so that the punching V-angle mechanism 110 and the pole piece 200 operate at a first preset speed A2, and controlling the punching V-angle mechanism 110 to punch a V-angle on the pole piece 200.
The driving member 130 in this embodiment is a driving motor, and referring to fig. 6, the linear motor 120 includes a linear motor stator 121 and a linear motor mover 122, the linear motor stator 121 and the plurality of conveying rollers 140 are both disposed on the ground, the linear motor mover 122 is in sliding fit with the linear motor stator 121, the V-angle punching mechanism 110 is connected to the linear motor mover 122, and the controller is electrically connected to the linear motor mover 122.
When a V-angle needs to be punched on the pole piece 200, in a first preset time period t0-t1 of tape running of the pole piece 200, the controller is utilized to control the linear motor rotor 122 to operate so as to enable the running speed V2 of the punching V-angle mechanism 110 to be increased to a first preset speed a2, and simultaneously the controller is controlled to reduce the rotating speed of the driving motor so as to enable the tape running speed V1 of the pole piece 200 to be reduced to a first preset speed a2 from an initial tape running speed a0, at this time, the tape running speed V1 of the pole piece 200 is equal to the running speed V2 of the punching V-angle mechanism 110, and then the punching V-angle mechanism 110 is controlled to punch a V-angle on the pole piece 200, in the whole punching V-angle process, because the tape running speed V1 of the pole piece 200 is reduced, the linear motor 120 can drive the punching V-angle mechanism 110 without reaching a very high speed, and the load of the linear motor 120 is greatly reduced.
And in a third preset time period t2-t3 after the second preset time period t1-t2, the controller is used for controlling the linear motor 120 to reduce the running speed V2 of the impact V-angle mechanism 110 to zero speed, reversely accelerate to the second preset speed A3, decelerate to zero speed and complete resetting.
In the embodiment, the first preset time period t0-t1 is preceded by an initial time period in which the pole piece 200 always runs at the initial tape speed a0 and the attack V-angle mechanism 110 is kept in a static state. The controller is internally provided with a timer for recording an initial time period, a first preset time period t0-t1, a second preset time period t1-t2 and a third preset time period t2-t 3. The tape moving speed V1 of the pole piece 200 and the running speed V2 of the V-angle punching mechanism 110 of the deceleration pursuit V-angle device 100 can be obtained in real time by arranging a speed sensor which is electrically connected with the controller, and the tape moving speed V1 of the pole piece 200 and the running speed V2 of the V-angle punching mechanism 110 are fed back to the controller in real time; the tape running speed V1 of the pole piece 200 and the running speed V2 of the V-angle punching mechanism 110 both move in a uniformly variable speed linear motion in the variable speed stage, so as to ensure that the tape running of the pole piece 200 and the running of the V-angle punching mechanism 110 are in a stable state.
In addition, the deceleration and following V-angle device 100 further includes a first buffer mechanism 150, and the first buffer mechanism 150 includes a first buffer roller 151 and a first lifting assembly (not shown in the figure); the first buffer roller 151 is arranged at the feeding end of the pole piece 200 of the speed-reducing impact-following V-angle device 100 and used for winding the pole piece 200; the first lifting assembly is connected to the first buffer roller 151 and used for driving the first buffer roller 151 to lift so as to buffer the pole piece 200.
In this embodiment, the two sides of the speed-reducing and impact-following V-angle device 100 are respectively provided with the unwinding cylinder 300 and the winding cylinder 400, the pole piece 200 is wound on the unwinding cylinder 300, the conveying roller 140, the first buffer roller 151 and the winding cylinder 400 at the same time, the unwinding cylinder 300 is always in the constant-speed unwinding state, the winding cylinder 400 is always in the constant-speed winding state, the unwinding speed of the unwinding cylinder 300 is equal to the winding speed of the winding cylinder 400, and the unwinding speed of the unwinding cylinder 300 is matched with the winding speed of the winding cylinder 400 and the reference speed a 1.
In the case that the pole piece 200 is transported at a speed lower than the reference speed a1, that is, the transport speed v1 of the pole piece 200 is lower than the winding/unwinding speed, the first lifting/lowering assembly controls the first buffer roller 151 to descend so as to buffer the redundant pole piece 200.
In addition, the deceleration and following V-angle device 100 further includes a second buffer mechanism 160, and the second buffer mechanism 160 includes a second buffer roller 161 and a second lifting assembly (not shown in the figure); the second buffer roller 161 is arranged at the discharge end of the pole piece 200 of the deceleration following impact V-angle device 100 and is used for winding the pole piece 200; the second lifting assembly is connected to the second buffer roller 161, and is used for driving the second buffer roller 161 to lift and lower so as to buffer the pole piece 200.
In the case that the pole piece 200 is transported at a speed higher than the reference speed a1, that is, the transport speed v1 of the pole piece 200 is higher than the winding/unwinding speed, the second lifting/lowering assembly controls the second buffer roller 161 to descend so as to buffer the redundant pole piece 200.
Overall, when pole piece 200 is being transported at a speed lower than reference speed a1, the excess pole piece 200 is buffered on first buffer roller 151, and second buffer roller 161 releases pole piece 200 to winding drum 400; in the case where pole piece 200 is being transported at a speed higher than reference speed a1, first buffer roller 151 releases pole piece 200 out and excess pole piece 200 is buffered onto second buffer roller 161.
As the laser cutting speed is high, one V-angle punching mechanism 110 cannot be matched with the laser cutting speed, so that a plurality of linear motor rotors 122 are required to move together, and with reference to fig. 6, each linear motor rotor 122 is provided with a die supporting plate 123, each die supporting plate 123 is symmetrically provided with a group of V-angle punching mechanisms 110, and V-angles are punched on two sides of the pole piece 200 respectively; for example, if three linear motors 122 are provided to move together, three groups of V-angle punching mechanisms 110 simultaneously punch V angles, and the first buffer mechanism 150 or the second buffer mechanism 160 needs to store and release three times of the length of the pole piece 200 to satisfy the consumption of acceleration and deceleration.
Optionally, the first lifting assembly and the second lifting assembly can be a motor screw lifting mechanism or an air cylinder lifting mechanism, as long as the effect of lifting of the corresponding buffer roller can be achieved.
Referring to fig. 7, in the present embodiment, the V-angle punching mechanism 110 includes a V-angle punching motor 111, a rotating cam mechanism and a V-angle die 113, the V-angle punching motor 111 is disposed on the first motor, the V-angle punching motor 111 is connected to the rotating cam mechanism, and the rotating cam mechanism is connected to the V-angle die 113 for driving the V-angle die 113 to punch a V-angle on the pole piece 200.
In this embodiment, the output end of the V-punching angle motor 111 is connected to a speed reducer 114, the bottom of the speed reducer 114 is provided with a speed reducer support 115, the speed reducer support 115 is arranged on the die support plate 123, the V-punching angle motor 111 is in transmission connection with the rotating cam mechanism through the speed reducer 114, and the controller is electrically connected to the V-punching angle motor 111.
Optionally, the rotating cam mechanism includes an eccentric wheel 112, one end of the speed reducer 114 away from the V-angle punching motor 111 is connected to the eccentric wheel 112, and the eccentric wheel 112 and the V-angle die 113 are connected through a bearing 116 and a connecting rod 117.
In a second preset time period t1-t2, the controller controls the V-angle punching motor 111 to start, the eccentric wheel 112 rotates, and the V-angle die 113 at the other end of the connecting rod 117 is driven to move up and down, so that the V-angle punching of the pole piece 200 is realized.
According to the speed-reducing impact-following V-angle method and the speed-reducing impact-following V-angle device 100 provided by the present embodiment, the operating principle of the speed-reducing impact-following V-angle method and the speed-reducing impact-following V-angle device 100 is as follows: in the initial time period, the pole piece 200 always runs at the initial tape-moving speed a0, and the linear motor rotor 122 keeps a static state; when a V angle needs to be punched on the pole piece 200, the initial time period is a first preset time period t0-t1, the controller controls the driving motor to reduce the rotating speed in the first preset time period t0-t1, the tape running speed V1 of the pole piece 200 is reduced to a first preset speed A2, the linear motor rotor 122 is controlled to accelerate and drive the running speed V2 of the punching V angle mechanism 110 to be correspondingly adjusted to the first preset speed A2, the V angle is punched in a second preset time period t1-t2 after the first preset time period t0-t1, due to the fact that the tape running speed V1 of the pole piece 200 is reduced, the linear motor 120 can keep consistent with the tape running speed V1 of the pole piece 200 without reaching a very high speed, the punching V angle mechanism 110 is driven to punch the V angle at the moment, and the load of the linear motor 120 is greatly reduced. After the V-angle punching is finished, the electric vehicle enters a third preset time period t2-t3 from a second preset time period t1-t2, the belt moving speed V1 of the pole piece 200 is controlled to be increased to the initial belt moving speed A0 in the third preset time period t2-t3, meanwhile, the running speed V2 of the V-angle punching mechanism 110 is controlled to be reduced to zero and reversely accelerated to a second preset speed A3, the speed is reduced to zero to complete resetting, and then the steps are repeatedly executed to achieve circular V-angle punching operation and improve the V-angle punching efficiency. In addition, in a third preset time period t2-t3, when the pole piece 200 is fed at a speed lower than the reference speed a1, the redundant pole piece 200 is buffered on the first buffer roller 151, and the second buffer roller 161 releases the pole piece 200 to the winding drum 400; when pole piece 200 is being transported at a speed higher than reference speed a1, first buffer roller 151 releases pole piece 200 and excess pole piece 200 is buffered on second buffer roller 161 to buffer and protect pole piece 200.
In summary, the embodiments of the present invention provide a speed reduction and impact following V angle method and a speed reduction and impact following V angle device 100, where the tape transport speed V1 of the pole piece 200 and the operation speed V2 of the impact V angle mechanism 110 are controlled to be correspondingly adjusted to the first preset speed a2 in the first preset time period t0-t1, the impact V angle is performed in the second preset time period t1-t2, the tape transport speed V1 of the pole piece 200 is controlled to be increased to the initial tape transport speed a0 in the third preset time period t2-t3, the impact V angle mechanism 110 is controlled to be reset, and then the operations of the first preset time period t0-t1, the second preset time period t1-t2, and the third preset time period t2-t3 are repeatedly executed, so as to implement the circular impact V angle operation and improve the impact V angle efficiency.
The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. A speed-reducing impact-following V-angle method is used for punching a pole piece into a V angle, and is characterized in that the method is applied to a speed-reducing impact-following V-angle device which comprises an impact V-angle mechanism and a linear motor, wherein the linear motor is connected to the impact V-angle mechanism and is used for driving the impact V-angle mechanism to do linear reciprocating motion, and the method comprises the following steps:
acquiring the tape travelling speed of the pole piece and the running speed of a V-angle punching mechanism of the speed-reducing following V-angle device in real time;
in a first preset time period of the pole piece tape transport, controlling the tape transport speed to be reduced from an initial tape transport speed to a first preset speed, and controlling the running speed to be increased to the first preset speed;
and in a second preset time period after the first preset time period of the traveling of the pole piece, controlling the pole piece and the V-angle punching mechanism to operate at the first preset speed, and controlling the V-angle punching mechanism to punch a V angle on the pole piece.
2. The deceleration pursuit V-angle method of claim 1, further comprising:
and in a third preset time period after the second preset time period of the pole piece tape transport, controlling the tape transport speed of the pole piece to be increased to the initial tape transport speed, and controlling the V-angle punching mechanism to reset.
3. The speed-reducing chasing V-angle method according to claim 2, wherein the step of controlling the traveling speed of the pole piece to be increased to the initial traveling speed in a third preset time period after the second preset time period of the traveling of the pole piece, and the step of controlling the punching V-angle mechanism to be reset includes:
and in the third preset time period, controlling the running speed of the V-angle punching mechanism to be reduced to zero, reversely accelerating to a second preset speed, and then decelerating to zero to complete resetting.
4. The speed-reducing and impact-following V-angle method according to claim 2, wherein after the step of controlling the traveling speed of the pole piece to be increased to the initial traveling speed and controlling the impact V-angle mechanism to be reset in a third preset time period after the second preset time period of the traveling of the pole piece, the step of obtaining the traveling speed of the pole piece and the running speed of the impact V-angle mechanism of the speed-reducing and impact-following V-angle device in real time is repeated until the step of controlling the pole piece and the impact V-angle mechanism to run at the first preset speed and controlling the impact V-angle mechanism to impact the V angle on the pole piece in the second preset time period after the first preset time period of the traveling of the pole piece is executed.
5. The deceleration following impact V-angle method according to claim 2, wherein the deceleration following impact V-angle device comprises a first buffer mechanism, the first buffer mechanism is arranged at a pole piece feeding end of the deceleration following impact V-angle device and is used for buffering a pole piece fed from the pole piece feeding end;
the first preset speed is smaller than a reference speed, and the initial tape moving speed is greater than the reference speed;
the method further comprises the following steps:
and in the third preset time period, when the tape moving speed is higher than the first preset speed and lower than the reference speed, controlling the first cache mechanism to operate so that the pole piece is cached in the first cache mechanism.
6. The deceleration following impact V-angle method according to claim 2, wherein the deceleration following impact V-angle device comprises a second buffer mechanism, the second buffer mechanism is arranged at a pole piece discharging end of the deceleration following impact V-angle device and is used for buffering a pole piece discharged from the pole piece discharging end;
the method further comprises the following steps:
and when the tape transport speed is greater than the reference speed and less than the initial tape transport speed, controlling the second cache mechanism to operate so that the pole piece is cached in the second cache mechanism.
7. A deceleration chasing V-angle device, which is used for realizing the deceleration chasing V-angle method according to any one of claims 1 to 6, and comprises a linear motor, a V-angle punching mechanism, a driving piece, a controller and a plurality of conveying rollers;
the linear motor is connected with the V-angle punching mechanism and is used for driving the V-angle punching mechanism to do linear reciprocating motion;
the conveying rollers are used for conveying the pole pieces, and the driving piece is connected to one of the conveying rollers and used for driving the conveying rollers to rotate so as to drive the pole pieces to move;
the moving direction of the V-angle punching mechanism and the moving direction of the pole piece are positioned on the same straight line;
the controller is electrically connected with the linear motor and the driving piece respectively;
in the first preset time period, the controller is used for controlling the linear motor to operate so as to increase the operation speed of the V-angle punching mechanism to a first preset speed, and controlling the driving piece to operate so as to reduce the tape travelling speed of the pole piece from the initial tape travelling speed to the first preset speed;
and in a second preset time period after the first preset time period, the controller is used for respectively controlling the linear motor and the driving piece to operate so as to enable the V-angle punching mechanism and the pole piece to operate at a first preset speed, and controlling the V-angle punching mechanism to punch a V angle on the pole piece.
8. The deceleration V-angle follow-up device according to claim 7, wherein in a third preset time period after the second preset time period, the controller is configured to control the linear motor to reduce the operating speed of the V-angle follow-up mechanism to zero speed, accelerate the V-angle follow-up mechanism to the second preset speed in the reverse direction, and then decelerate the V-angle follow-up mechanism to zero speed to complete the reset.
9. The deceleration chase ram V-angle device of claim 7, further comprising a first buffer mechanism comprising a first buffer roller and a first lift assembly;
the first buffer roller is arranged at the pole piece feeding end of the speed reduction and impact following V-angle device and used for winding the pole piece;
the first lifting assembly is connected to the first cache roller and used for driving the first cache roller to lift so as to cache the pole piece.
10. The deceleration chase ram V-angle device of claim 7, further comprising a second buffer mechanism, the second buffer mechanism comprising a second buffer roller and a second lift assembly;
the second buffer roller is arranged at the pole piece discharging end of the speed reduction and impact following V-angle device and used for winding the pole piece;
and the second lifting assembly is connected to the second cache roller and is used for driving the second cache roller to lift so as to cache the pole piece.
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| CN113998511B (en) | 2024-01-19 |
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