CN115179344B - Design method for cam trace of pole piece cutter - Google Patents
Design method for cam trace of pole piece cutter Download PDFInfo
- Publication number
- CN115179344B CN115179344B CN202210842708.6A CN202210842708A CN115179344B CN 115179344 B CN115179344 B CN 115179344B CN 202210842708 A CN202210842708 A CN 202210842708A CN 115179344 B CN115179344 B CN 115179344B
- Authority
- CN
- China
- Prior art keywords
- curve
- cutter
- feeding
- cutting
- tool withdrawal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D5/08—Means for actuating the cutting member to effect the cut
- B26D5/16—Cam means
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shearing Machines (AREA)
- Milling Processes (AREA)
Abstract
The invention relates to a design method of a pole piece cutter cam trace, which comprises the following steps: splitting a cutter cam trace into a cutter feeding trace and a cutter withdrawing trace; dividing a feed track into a feed horizontal line, a feed first curve and a feed second curve, connecting the feed horizontal line, the feed first curve and the feed second curve end to end in sequence, establishing a first right-angle coordinate system, and calculating to obtain the feed first curve and the feed second curve; dividing the tool withdrawal track into a first tool withdrawal curve, a second tool withdrawal curve and a horizontal tool withdrawal line, connecting the first tool withdrawal curve, the second tool withdrawal curve and the horizontal tool withdrawal line end to end in sequence, and calculating to obtain the first tool withdrawal curve and the second tool withdrawal curve. According to the pole piece cutter cam trace, the cutting process is more stable by setting the feeding trace and the retracting trace, vibration during cutting of the cutter and jump during retracting are improved, impact on the guide post, the guide post frame and the cutter fixing seat is reduced, and therefore the cutting quality of the pole piece is improved, and the service lives of the cutter and the guide post are prolonged.
Description
Technical Field
The invention relates to the technical field of lithium battery production, in particular to a design method of a cam trace of a pole piece cutter.
Background
In the current lithium battery device, a battery composed of cells formed by winding is called a wound battery, and the wound battery is also called a battery cell. The battery core in the winding form can enable the performance of the lithium battery to be stable and the manufacturing efficiency to be high. The winding machine sequentially winds the anode, the cathode and the diaphragm paper of the battery into a battery core according to a specific layer sequence. In the winding process, the length of the pole piece used in the winding process of each battery cell is fixed, in order to improve the cutting efficiency of the pole piece, the main stream cutting mode in the industry at present adopts a tracking cutting mechanism for cutting, and the tracking cutting mechanism can cut under the condition of no belt stop, namely, the pole piece cutter mechanism moves relative to the linear cam through the cutter assembly, so that the pole piece cutting action is realized.
Because the relative motion of cutter subassembly and sharp cam slot is faster, very easily produces great impact when feeding, and then causes the guide pillar to damage and the vibration of cutter, and when moving back, easily because relative inertia makes the roller break away from the cam slot and cause the cutter to beat to influence cutting quality and cutter life-span.
Disclosure of Invention
The invention mainly aims to provide a design method of a pole piece cutter cam trace, which aims to solve the technical problems and reduce the impact generated during feeding and the jump generated during retracting.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the design method of the cam trace of the pole piece cutter is characterized by comprising the following steps of:
s1, dividing a cutter cam trace into a cutter feeding trace and a cutter withdrawing trace;
s2, dividing a cutting track into a cutting horizontal line, a cutting first curve and a cutting second curve, connecting the cutting horizontal line, the cutting first curve and the cutting second curve end to end in sequence, establishing a first right-angle coordinate system by taking a connecting point of the cutting horizontal line and the cutting first curve as an origin, and calculating to obtain the cutting first curve and the cutting second curve;
the calculation formulas of the feeding first curve and the feeding second curve are specifically as follows:
X 1 2 ＝2pY 1
wherein p=a 2 B, a is the length of the first feeding curve or the second feeding curve on the X axis in the first right-angle coordinate system, and b is the distance between the highest point of the feeding track and the X axis in the first right-angle coordinate system;
s3, dividing a tool withdrawal track into a first tool withdrawal curve, a second tool withdrawal curve and a horizontal tool withdrawal line, connecting the first tool withdrawal curve, the second tool withdrawal curve and the horizontal tool withdrawal line end to end in sequence, connecting the first tool withdrawal curve with the second tool feeding curve at the highest point of the cam track of the cutter, and calculating to obtain the first tool withdrawal curve and the second tool withdrawal curve;
the calculation formula of the first curve of tool withdrawal is specifically:
wherein f (phi) is the force output by the cylinder along with displacement, m is the mass formed by the cutter, the guide post frame and the roller, phi is the horizontal relative displacement of the cutter assembly and the linear cam, and v is the relative horizontal speed of the cutter assembly and the linear cam;
the horizontal line passing through the highest point of the cam trace of the cutter is taken as an X axis, the vertical line passing through the connecting point of the second curve of the cutter withdrawal and the horizontal line of the cutter withdrawal is taken as a Y axis, a second rectangular coordinate system is established, and the calculation formula of the second curve of the cutter withdrawal is specifically as follows:
X 2 2 ＝2PY 2
wherein p=f 2 And (b-f (c)), wherein f/p=f (c), f (c) is a value of displacement of the function of the first retracting curve at c, and f is a length of the second retracting curve on the X axis in the second rectangular coordinate system, so as to ensure that a joint of the second retracting curve and the first retracting curve is identical to a slope of the first retracting curve.
As a preferable technical solution, in step S2, a connection point of the first feeding curve and the second feeding curve is an o point, and the first feeding curve and the second feeding curve are two sections of parabolas with a symmetry center being the o point.
As a preferred embodiment, in step S2, the maximum pressure angle of the roller passing through the junction of the feed first curve and the feed second curve is less than 30 °.
The invention has the beneficial effects that: according to the pole piece cutter cam trace, the cutting process is more stable through the arrangement of the feeding trace and the retracting trace, vibration during cutting of the cutter and jump during retracting of the cutter are improved, impact on the guide post, the guide post frame and the cutter fixing seat is reduced, and therefore the cutting quality of the pole piece is improved, and the service lives of the cutter and the guide post are prolonged.
Drawings
Fig. 1 is a schematic structural view of a pole piece cutter according to the present invention;
fig. 2 is a schematic diagram of the structure of the pole piece cutter cam trace according to the present invention.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
As shown in fig. 1, the pole piece cutter comprises a cam 1, a cutter 2, a cutter fixing seat 7, a cylinder 3, a guide post 4, a guide post frame 5 and a roller 6, wherein the cutter 2 is fixedly arranged on the cutter fixing seat 7, the cutter fixing seat 7 is fixedly connected with the guide post frame 5 through the guide post 4, the roller 6 is rotatably arranged at the lower end of the guide post frame 5, a cam trace is arranged on the cam 1, the roller 6 moves along the cam trace of the cam 1 to drive the cutter 2 to cut a pole piece, and the cylinder 3 drives the guide post frame 5 to move so that the roller 6 can be clung to the cam 1.
Referring to fig. 2, the present invention further provides another solution, a method for designing a cam track of a pole piece cutter, comprising the following steps:
and step 1, splitting a cutter cam trace into a cutter feeding trace 11 and a cutter withdrawing trace 12.
Step 2, splitting the feeding track 11 into a feeding horizontal line 111, a feeding first curve 112 and a feeding second curve 113, connecting the feeding horizontal line 111, the feeding first curve 112 and the feeding second curve 113 end to end in sequence, establishing a first right angle coordinate system 13 by taking the connecting point of the feeding horizontal line 111 and the feeding first curve 112 as an origin, and calculating to obtain the feeding first curve 112 and the feeding second curve 113.
The calculation formulas of the feeding first curve 112 and the feeding second curve 113 are specifically as follows:
X 1 2 ＝2pY 1
wherein p=a 2 B, a is the length of the first curve 112 or the second curve 113 on the X axis of the first right angle coordinate system 13, b is the distance between the highest point of the feed track 11 and the X axis of the first right angle coordinate system 13, X 1 Is the abscissa value of the first rectangular coordinate system 13, Y 1 Is the ordinate value of the first rectangular coordinate system 13.
Further, the connection point of the first feeding curve 112 and the second feeding curve 113 is an o point, and the first feeding curve 112 and the second feeding curve 113 are two sections of parabolas which are symmetrical with each other with the o point as a symmetry center. The maximum pressure angle of the roller 6 passing through the junction of the feed first curve 112 and the feed second curve 113 is less than 30 °.
Step 3, splitting the retracting track 12 into a retracting first curve 121, a retracting second curve 122 and a retracting horizontal line 123, connecting the retracting first curve 121, the retracting second curve 122 and the retracting horizontal line 123 end to end in sequence, connecting the retracting first curve 121 with the feeding second curve 113 at the highest point of the cutter cam track, and calculating to obtain the retracting first curve 121 and the retracting second curve 122;
the calculation formula of the first retracting curve 121 is specifically:
wherein f (phi) is the force output by the air cylinder 3 along with displacement, m is the mass formed by the cutter 2, the guide post 4, the guide post frame 5 and the roller 6, phi is the horizontal relative displacement of the cutter 2 and the cam 1, v is the relative horizontal speed of the cutter 2 and the cam 1, and h is the height of a cutter withdrawal first curve 121;
the second rectangular coordinate system 14 is established by taking the horizontal line passing through the highest point of the cam trace of the cutter as an X axis and taking the vertical line passing through the connecting point of the second curve 122 of the cutter withdrawal and the horizontal line 123 of the cutter withdrawal as a Y axis, wherein the calculation formula of the second curve 122 of the cutter withdrawal is specifically as follows:
X 2 2 ＝2PY 2
wherein p=f 2 /(b-f (c)), while satisfying the condition f/p=f (c), f (c) being the value of the displacement of the function of the first curve of relief in c, f being the length of the second curve of relief 122 on the X-axis in the second rectangular coordinate system 14, to ensure that the junction of the second curve of relief 122 with the first curve of relief 121 is the same as the slope of the first curve of relief 121, X 2 Is the abscissa value of the second rectangular coordinate system 14, Y 2 Is the ordinate value of the second rectangular coordinate system 14.
According to the pole piece cutter cam trace design method, the first feeding curve 112 and the second feeding curve 113 are central symmetrical parabolas, the vertical dividing speed of the roller 6 when entering and leaving the feeding trace 11 is 0, and the vertical acceleration of the first feeding curve 112 and the vertical acceleration of the second feeding curve 113 are equal, so that the acceleration transition of the roller 6 when moving along the feeding trace is smaller. The first curve 121 and the second curve 122 are parabolic curves, wherein the first curve 121 uses the shortest horizontal displacement to ensure that the roller 6 does not separate from the cam 1 due to inertia, the risk of jumping of the cutter 2 caused by separation of the roller 6 is reduced, and the second curve 122 adopts a common parabola and can be well connected with the first curve 121 to ensure that the final motion is uniform deceleration and the stress of the roller is uniform. The cutting process is more stable, the vibration of the cutter 2 during cutting and the jump of the cutter during retracting are improved, and the impact on the guide post 4, the guide post frame 5 and the cutter fixing seat 7 is reduced, so that the cutting quality of the pole piece is improved, and the service lives of the cutter 2 and the guide post 4 are prolonged.
The above embodiments are only preferred examples of the present invention and are not intended to limit the scope of the present invention, so that all equivalent changes or modifications of the structure, characteristics and principles described in the claims are included in the scope of the present invention.
Claims (3)
1. The design method of the cam trace of the pole piece cutter is characterized by comprising the following steps of:
s1, dividing a cutter cam trace into a cutter feeding trace and a cutter withdrawing trace;
s2, dividing a cutting track into a cutting horizontal line, a cutting first curve and a cutting second curve, connecting the cutting horizontal line, the cutting first curve and the cutting second curve end to end in sequence, establishing a first right-angle coordinate system by taking a connecting point of the cutting horizontal line and the cutting first curve as an origin, and calculating to obtain the cutting first curve and the cutting second curve;
the calculation formulas of the feeding first curve and the feeding second curve are specifically as follows:
X 1 2 ＝2pY 1
wherein p=a 2 B, a is the length of the first feeding curve or the second feeding curve on the X axis in the first right-angle coordinate system, and b is the distance between the highest point of the feeding track and the X axis in the first right-angle coordinate system;
s3, dividing a tool withdrawal track into a first tool withdrawal curve, a second tool withdrawal curve and a horizontal tool withdrawal line, connecting the first tool withdrawal curve, the second tool withdrawal curve and the horizontal tool withdrawal line end to end in sequence, connecting the first tool withdrawal curve with the second tool feeding curve at the highest point of the cam track of the cutter, and calculating to obtain the first tool withdrawal curve and the second tool withdrawal curve;
the calculation formula of the first curve of tool withdrawal is specifically:
wherein f (phi) is the force output by the cylinder along with displacement, m is the mass formed by the cutter, the guide post frame and the roller, phi is the horizontal relative displacement of the cutter assembly and the linear cam, and v is the relative horizontal speed of the cutter assembly and the linear cam;
the horizontal line passing through the highest point of the cam trace of the cutter is taken as an X axis, the vertical line passing through the connecting point of the second curve of the cutter withdrawal and the horizontal line of the cutter withdrawal is taken as a Y axis, a second rectangular coordinate system is established, and the calculation formula of the second curve of the cutter withdrawal is specifically as follows:
X 2 2 ＝2PY 2
wherein p=f 2 And (b-f (c)), wherein f/p=f (c), f (c) is a value of displacement of the function of the first retracting curve at c, and f is a length of the second retracting curve on the X axis in the second rectangular coordinate system, so as to ensure that a joint of the second retracting curve and the first retracting curve is identical to a slope of the first retracting curve.
2. The pole piece cutter cam trace design method according to claim 1, wherein in the step S2, a connection point of the first feeding curve and the second feeding curve is an o point, and the first feeding curve and the second feeding curve are two sections of parabolas which are symmetrical in center and take the o point as a symmetry center.
3. A pole piece cutter cam trace design method according to claim 1 or 2, characterized in that in step S2 the maximum pressure angle of the roller passing the junction of the feed first curve and the feed second curve is less than 30 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210842708.6A CN115179344B (en) | 2022-07-18 | 2022-07-18 | Design method for cam trace of pole piece cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210842708.6A CN115179344B (en) | 2022-07-18 | 2022-07-18 | Design method for cam trace of pole piece cutter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115179344A CN115179344A (en) | 2022-10-14 |
| CN115179344B true CN115179344B (en) | 2023-07-25 |
Family
ID=83519381
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210842708.6A Active CN115179344B (en) | 2022-07-18 | 2022-07-18 | Design method for cam trace of pole piece cutter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115179344B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116511305B (en) * | 2023-06-26 | 2023-09-15 | 中太海事技术(上海)有限公司 | Processing device, corrugated plate and storage container |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0657664A1 (en) * | 1993-11-12 | 1995-06-14 | Mitsuhashi Corporation | Cam apparatus |
| EP3106946A1 (en) * | 2015-06-17 | 2016-12-21 | Uwe Simon | Method for controlling the trajectory of a motor-driven machine or tool component |
| CN112643766A (en) * | 2021-01-20 | 2021-04-13 | 漳州万力机械有限公司 | Imitation manual ultrasonic cutting machine and working process |
| CN113910360A (en) * | 2021-11-04 | 2022-01-11 | 盐城工学院 | Fiber reinforced composite material hole machining method |
| CN216658217U (en) * | 2021-12-20 | 2022-06-03 | 东莞市雅康精密机械有限公司 | Pole piece cutting equipment based on vision guide |
-
2022
- 2022-07-18 CN CN202210842708.6A patent/CN115179344B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0657664A1 (en) * | 1993-11-12 | 1995-06-14 | Mitsuhashi Corporation | Cam apparatus |
| EP3106946A1 (en) * | 2015-06-17 | 2016-12-21 | Uwe Simon | Method for controlling the trajectory of a motor-driven machine or tool component |
| CN112643766A (en) * | 2021-01-20 | 2021-04-13 | 漳州万力机械有限公司 | Imitation manual ultrasonic cutting machine and working process |
| CN113910360A (en) * | 2021-11-04 | 2022-01-11 | 盐城工学院 | Fiber reinforced composite material hole machining method |
| CN216658217U (en) * | 2021-12-20 | 2022-06-03 | 东莞市雅康精密机械有限公司 | Pole piece cutting equipment based on vision guide |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115179344A (en) | 2022-10-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN115179344B (en) | Design method for cam trace of pole piece cutter | |
| CN210468000U (en) | Apparatus for manufacturing electrode assembly of secondary battery | |
| CN107293754B (en) | Preparation method of negative porous copper current collector for lithium metal battery | |
| CN110350252B (en) | Multi-station pole piece independent deviation correcting device and deviation correcting method thereof | |
| CN105680100A (en) | Lithium-ion battery and manufacturing method thereof | |
| CN108461826B (en) | Constant-speed winding needle combination mechanism | |
| CN102593523B (en) | Semi-automatic lithium ion battery laminating device | |
| CN102738431A (en) | Automatic adhesive feeding device for tabs | |
| CN214031087U (en) | Variable-jump-distance lug size die cutting device | |
| CN110197885B (en) | Lithium battery diaphragm cutting device | |
| CN210224167U (en) | Coating structure for improving wrinkle formation of negative copper foil | |
| CN220272558U (en) | Laminated cell component cutting mechanism | |
| CN209401758U (en) | Mechanism tab combing and arranged | |
| CN220272548U (en) | Winding machine for correcting deviation of pole piece end | |
| CN219296772U (en) | S-shaped traction device for lithium battery diaphragm production line | |
| CN103413952B (en) | A kind of li-Mn button cell is from dynamic circuit connector housing apparatus | |
| CN220922506U (en) | Automatic up-down action structure of diaphragm cutter pressing plate | |
| CN217822940U (en) | Screw rod chases after and cuts feed mechanism | |
| CN219173758U (en) | Diaphragm unreels pushing device | |
| CN220672647U (en) | Battery cell winding mechanism | |
| CN111122660A (en) | Isolating membrane puncture detection device | |
| CN108736072B (en) | Unreeling tension driving integrated deviation rectifying mechanism for square lithium battery winder | |
| CN217571058U (en) | Chasing and cutting cutter mechanism without impact effect | |
| CN220420645U (en) | Battery core winding mechanism for thermal compounding of diaphragm | |
| CN214022890U (en) | Flexible hardware molding piece device for battery pole piece |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |