CN217426846U

CN217426846U - Needle winding mechanism

Info

Publication number: CN217426846U
Application number: CN202220870654.XU
Authority: CN
Inventors: 叶宗锋; 张永胜; 邱毅
Original assignee: Suzhou Jieruisi Intelligent Technology Co ltd
Current assignee: Suzhou Jieruisi Intelligent Technology Co ltd
Priority date: 2022-04-15
Filing date: 2022-04-15
Publication date: 2022-09-13
Anticipated expiration: 2032-04-15

Abstract

The utility model discloses a needle rolling mechanism, which comprises a needle rolling base, a first outer rolling needle, a second outer rolling needle, a first adjusting component and a first movable base; the first outward winding needle and the second outward winding needle are arranged at intervals along the radial direction, and the first outward winding needle is fixedly connected with the winding needle seat; the second outer winding needle is fixedly connected with the first movable seat, and the first movable seat is arranged in the winding needle seat, extends out of the winding needle seat along the radial direction and can slide in the winding needle seat along the radial direction; the first adjusting component comprises a sliding block which can move relative to the needle rolling seat, and the sliding block is directly or indirectly matched with the extending end of the first movable seat. The utility model discloses a roll up the circumference of needle mechanism adjustment roll up needle mechanism, the driving piece does not set up on rolling up the needle, has avoided using the slip ring subassembly, the simple structure of first regulating assembly, conveniently cooperates with external driving piece; preceding needle mouth subassembly guarantees the depth of parallelism of first outer book needle, avoids first outer book needle because of the coiling speed is fast and centrifugation.

Description

Needle winding mechanism

Technical Field

The utility model belongs to lithium cell automation equipment field especially relates to a roll up needle mechanism.

Background

The production of the battery core is to wind the positive plate material belt, the negative plate material belt and the diaphragm material belt in sequence to form a winding body, and the tab is a metal conductor which leads the positive and negative electrodes out of the battery core. Due to the difference of welding or shearing precision of the tabs, the tabs of the wound battery cell may have a dislocation condition, and further the quality of the battery cell is affected, so the winding equipment needs to be provided with a winding needle mechanism capable of changing the circumference of the winding needle.

The circumference of a winding needle can be changed by the winding needle mechanism adopted at present, but most of structures are complex, and the adjustment of the circumference of the winding needle is inconvenient.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a roll up needle mechanism of needle week length is rolled up in simple structure, convenient adjustment.

In order to achieve the purpose, the needle rolling mechanism of the utility model comprises a needle rolling base, a first outer rolling needle, a second outer rolling needle, a first adjusting component and a first movable base; wherein

The first outer winding needle and the second outer winding needle are arranged at intervals along the radial direction, and the first outer winding needle is fixedly connected with the winding needle seat;

the second outer winding needle is fixedly connected with the first movable seat, and the first movable seat is arranged in the winding needle seat, extends out of the winding needle seat along the radial direction and can slide in the winding needle seat along the radial direction;

the first adjusting assembly comprises a sliding block which is movable relative to the needle rolling seat, the sliding block is directly or indirectly matched with the extending end of the first movable seat, and the second outer needle rolling needle is driven by the first movable seat to reciprocate in the radial direction.

In an embodiment of the utility model, the first adjusting component further includes a first annular seat and a fixed adjusting screw that sets up at first annular seat that set up around the reel seat along perpendicular to radial direction, adjusting screw threaded connection the slider, be provided with first cam on the slider, first cam cooperatees with the end that stretches out of first sliding seat, adjusting screw drives the slider and slides in radial direction.

In an embodiment of the needle winding mechanism of the present invention, the needle winding mechanism further includes a front needle nozzle assembly disposed at the free ends of the first and second needle winding mechanisms, the front needle nozzle assembly includes an inner needle fixing ring, an outer needle fixing ring, a connecting block, and a ball plunger; the inner needle fixing ring and the outer needle fixing ring are arranged in a concentric circle manner to form an accommodating space for accommodating the free ends of the first outer winding needle and the second outer winding needle; the outer needle fixing ring is provided with an opening at a position corresponding to the second outer winding needle, the free end of the second outer winding needle is provided with an inclined plane, and the inner needle fixing ring is provided with another inclined plane matched with the inclined plane; the connecting block sets up at the opening part, with the solid fixed ring fixed connection of inner needle, the ball plunger sets up on the connecting block and stretches into the solid fixed ring of outer needle through the opening, makes the inclined plane of the outer needle of rolling up of second and the solid fixed ring's of inner needle inclined plane cooperate.

In an embodiment of the utility model, the first outer winding needle is provided with a first groove, the first groove is internally provided with a first inner winding needle, and a plurality of elastic members are arranged between the first groove and the first inner winding needle.

In an embodiment of the present invention, the first inner winding needle is processed with a long gap along the axial direction of the winding needle mechanism, forming a structure with two ends connected and middle separated, one side of the first inner winding needle near the first groove is provided with a plurality of through holes, the elastic member is disposed in the through holes and one end of the elastic member abuts against the inner surface of the long gap.

In an embodiment of the needle winding mechanism of the present invention, the middle portion of the long gap forms at least one bending portion.

The utility model discloses in one embodiment of book needle mechanism, the outer needle processing of rolling up of second has the second recess, the activity is provided with the interior needle of rolling up of second in the second recess, the interior needle of rolling up of second is connected through a plurality of elastic components and locating pin with the outer needle of rolling up of second.

In an embodiment of the utility model, the second inner winding needle is fixedly connected with a second movable seat, the second movable seat is arranged in the winding needle seat, extends out of the winding needle seat along the radial direction, and can slide along the radial direction in the winding needle seat, a second cam is fixedly arranged on the first annular seat, and the second cam is matched with the extending end of the second movable seat.

The utility model discloses in an embodiment of book needle mechanism, it still includes the second annular seat with book needle holder relatively fixed setting to roll up needle mechanism, second annular seat is connected through a plurality of second guide bars with first annular seat, the second guide bar sets up along book needle mechanism axial, first annular seat can remove along the second guide bar, drives first cam, second cam and slides on the inclined plane of first sliding seat, second sliding seat.

In an embodiment of the needle winding mechanism of the present invention, the extending ends of the first and second movable seats are provided with a springInclined planeAnd the inclined planes extend along the extending direction of the needle rolling mechanism and incline towards the needle rolling mechanism.

To sum up, the needle winding mechanism of the utility model adjusts the circumference of the needle winding mechanism by adding the first adjusting component on the needle winding mechanism to be matched with the driving part outside the needle winding mechanism, the driving part for adjusting the circumference of the needle winding mechanism is not arranged on the needle winding, thereby avoiding using a slip ring component, and the first adjusting component has simple structure and is convenient to be matched with an external driving part; the front needle mouth assembly limits the free end of the first outward winding needle through the inclined plane of the ball plunger and the inner needle fixing ring, guarantees the parallelism of the first outward winding needle, and avoids the first outward winding needle from being centrifugal due to high winding speed.

Drawings

Fig. 1 is a front view of the present invention;

FIG. 2 is a front cross-sectional view of the needle winding mechanism of FIG. 1;

FIG. 3 is a cross-sectional view taken along section line A-A of FIG. 1;

FIG. 4 is a block diagram of the front needle tip assembly;

fig. 5 is a sectional view taken along a section line B-B in fig. 4.

Detailed Description

The present invention is further described with reference to the following drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the embodiments are not to be construed as limiting the present invention.

As shown in fig. 1 and 2, the needle winding mechanism includes a needle winding base 100 connected to a rotating shaft (not shown), a first outer winding needle 200, and a second outer winding needle 300. The first outer winding needle 200 is provided with a first groove 210, and a first inner winding needle 400 is movably arranged in the first groove 210. The second outer winding needle 300 is provided with a second groove 310, a second inner winding needle 500 is movably arranged in the second groove 310, the second inner winding needle 500 is arranged in the second groove 310 through a pin and an elastic part, and the first inner winding needle 400 and the second inner winding needle 500 form a gap through which a feeding belt passes. The needle rolling seat 100 comprises a first needle rolling seat 110 and a second needle rolling seat 120, the first outer rolling needle 200 is fixedly connected with the first needle rolling seat 110, the position of the first outer rolling needle 200 is relatively fixed, the second outer rolling needle 300 is movably connected with the needle rolling seat 100, and the second outer rolling needle 300 reciprocates in the radial direction of the needle rolling mechanism under the action of a first adjusting component 600.

As shown in fig. 3, the two roll needle holders 100 are fixedly connected to form a receiving space, and a first movable seat 320 and a second movable seat 510 are disposed in the receiving space and respectively connected to the first roll needle holder 110 and the second roll needle holder 120 through a plurality of first guide rods 130 and a plurality of adjusting springs 140. The plurality of first guide bars 130 are disposed along a radial direction of the needle winding mechanism, and the plurality of first guide bars 130 and the plurality of adjustment springs 140 enable the first movable block 320 and the second movable block 510 to reciprocate along the first guide bars 130 within the accommodating space. The first movable seat 320 and the second movable seat 510 respectively extend out of the needle winding seat 100 along the radial direction to form an extending end 321. One end of the second outer winding needle 300 is fixedly connected with the first movable seat 320, and one end of the second inner winding needle 500 is fixedly connected with the second movable seat 510. Acting on both protruding ends 321 simultaneously can drive the second outer winding needle 300 and the second inner winding needle 500 to move in the radial direction simultaneously.

In this embodiment, the second outer winding needle 300 and the first movable seat 320 are provided as two parts, and the second inner winding needle 500 and the second movable seat 510 are provided as two parts, but they may be provided as an integral structure in other embodiments.

The first adjustment assembly 600 comprises a first annular seat 610 disposed around the reel seat 100, a slider 620 slidably disposed on the first annular seat 610, and an adjustment screw 630 driving the first slider 620 to slide. The sliding block 620 is arranged on the first annular seat 610 through a sliding groove 640, the sliding groove 640 is arranged along the radial direction of the needle winding mechanism, the adjusting screw 630 is fixedly arranged on the first annular seat 610 and is in threaded connection with the sliding block 620, and the sliding block 620 is driven to slide along the sliding groove 640. The slider 620 is provided with a first cam 650, and the first cam 650 is engaged with the extending end 321 of the first movable seat 320, and drives the second outer winding needle 300 to move along the radial direction through the first movable seat 320. The sliding block 620 and the sliding groove 640 are both preferably in a dovetail shape, and the radial movement of the second outer winding needle 300 is driven by the matching of the adjusting screw 630 and the sliding block 620, so that the structure is simple, and the transmission precision is high.

Referring again to fig. 1, an open/close pin adjusting assembly 700 is disposed outside the pin winding mechanism, and includes a first rotating motor 710, and a first driving member 720 for driving the first rotating motor 710 to move closer to or away from the adjusting screw 630, wherein the first driving member 720 is preferably an air cylinder, and has a high response speed. The driving end of the first rotating electrical machine 710 is provided with a straight type adjusting member 730, and the end of the adjusting screw 630 is provided with a straight type groove 631 matching with the straight type adjusting member 730. First driving piece 720 drives a style of calligraphy regulating part 730 and stretches into in the style of calligraphy recess 631, and through detecting electric core utmost point ear skew trend, first rotating electrical machines 710 is rotatory, and the end 321 that stretches out of the first sliding seat 320 of adjustment stretches out the distance of rolling up needle holder 100, and then the distance of the outer needle 300 of rolling up of adjustment second and first outer needle 200 of rolling up, the girth of the needle mechanism is rolled up in the adjustment.

As shown in fig. 2, the first outer winding needle 200 is formed with a first groove 210, a first inner winding needle 400 is movably disposed in the first groove 210, the first inner winding needle 400 is connected to the first outer winding needle 200 through a plurality of elastic members 410, and the first inner winding needle 400 and the first groove 210 form a movable gap 420, so that the first inner winding needle 400 can move in the first groove 210. The first outer winding needle 200 is further provided with a pair of T-shaped thread grooves 220 at both sides of the second groove 310, the connection line of the pair of T-shaped thread grooves 220 is parallel to the axial direction of the winding needle mechanism, the notches of the pair of T-shaped thread grooves 220 are both communicated with the first groove 210, both ends of the first inner winding needle 400 are provided with steps 430, the T-shaped thread grooves 220 are internally provided with pressing sheets 221 and T-shaped bolts, the pressing sheets 221 are in contact with the step surfaces of the first inner winding needle 400, and the T-shaped bolts limit the first inner winding needle 400 in the first groove 210 through the pressing sheets 221. The first inner wrap needle 400 is movable within the first groove 210 within the range of the movement gap 420, maintaining the clamping of the strip of material with the second inner wrap needle 500.

The first inner winding needle 400 is provided with a long gap 440 along the axial direction of the winding needle mechanism to form a structure with two ends connected and the middle separated, one side of the first inner winding needle 400 close to the first groove 210 is provided with a plurality of through holes 450, and the elastic element 410 is arranged in the through holes 450 and is abutted against the inner surface of the long gap 440 through the through holes 450. With this arrangement, when the second inner wrap needle 500 contacts the first inner wrap needle 400, if there is a gap between them, the plurality of elastic members 410 will abut against the long slit 440 of the first inner wrap needle 400, so that the first inner wrap needle 400 is uniformly stressed and the gap is eliminated.

The position of the long gap 440 is far away from the first groove 210, a structure of a thick inner rolling needle close to the position of the first groove 210 and a thin inner rolling needle far away from the position of the first groove 210 is formed, and the elastic pieces 410 apply acting force to the thin inner rolling needle together, so that the middle part of the first inner rolling needle 400 is more easily stressed, and the sensitivity of the material belt clamped by the stress in the middle part of the first inner rolling needle 400 is improved.

At least one bent portion 441 is formed at the middle portion of the long slit 440, the number of the bent portions 441 is set according to the length of the long slit 440, and in this embodiment, two bent portions 441 are provided according to the length of the long slit 440. The bending portion 441 limits the two portions of the first inner winding needle 400 divided by the long slit 440 within a certain range of movement, so as to prevent the portion of the long slit 440 that is too long and the thin portion of the first inner winding needle 400 from being deformed by the elastic members 410 and being unable to be recovered.

As shown in fig. 1, in order to ensure the parallelism of the second outer winding needle 300 and improve the winding accuracy, the winding needle mechanism is further provided with a front needle mouth assembly 800 that restricts the deformation of the second outer winding needle 300. The front needle tip assembly 800 is disposed on a support base assembly (not shown) prior to winding.

As shown in fig. 2, 4, and 5, the front needle nozzle assembly 800 includes an inner needle fixing ring 810, an outer needle fixing ring 820, a connecting block 830, and a ball plunger 840. The inner needle fixing ring 810 is fixed to the support base assembly before winding, and has a circular boss 811 formed at the center thereof to receive the free end of the second inner winding needle 500; the outer needle fixing ring 820 is fixed on the inner needle fixing ring 810, and an annular accommodating space 812 for accommodating the free ends of the second outer winding needle 300 and the first outer winding needle 200 is formed with the annular convex part 811; the free end of the second outer winding needle 300 is provided with an inclined plane, an opening 821 is processed at the position of the outer needle fixing ring 820 corresponding to the free end of the second outer winding needle 300, and an inclined plane matched with the inclined plane of the second outer winding needle 300 is processed at the opening 821 by the annular convex part 811; connecting block 830 is disposed at opening 821 and is fixedly connected to inner needle fixing ring 810, and ball plunger 840 is disposed on connecting block 830 and extends into outer needle fixing ring 820 through opening 821, keeping the two inclined surfaces engaged. The distance between the front needle mouth assembly 800 and the second outer winding needle 300 is changed by a driving member externally connected with the connecting block 830, and the two inclined planes change the axial movement of the second outer winding needle 300 and the inner needle fixing ring 810 into radial movement, so that the distance between the free end of the second outer winding needle 300 and the first outer winding needle 200 is changed. The free end of the second outer winding needle 300 cannot deform under the limitation of the inner needle fixing ring 810 and the ball plunger 840, the second outer winding needle 300 and the first outer winding needle 200 are kept parallel, and the alignment degree of the lug of the winding battery cell is better.

Referring again to fig. 1, the needle winding mechanism further includes a second annular seat 900 fixedly connected to the rotating shaft, the second annular seat 900 is connected to the first annular seat 610 through a plurality of second guide rods 910, the second guide rods 910 are axially disposed along the needle winding mechanism, and the first annular seat 610 can move along the second guide rods 910. The first annular seat 610 is further fixedly provided with a second cam 660, the position of the second cam 660 corresponds to the position of the second outer winding needle 300, the positions of the first cam 650 and the second cam 660 are centrosymmetric about the rotation axis, and the second cam 660 is matched with the extending end 321 of the second movable seat 510. The two extending ends 321 are provided with inclined planes, the first annular seat 610 is driven to be close to or far away from the second annular seat 900, the first cam 650 and the second cam 660 can be driven to slide along the inclined planes of the extending ends 321, the distance that the two extending ends 321 extend out of the needle rolling seat 100 can be changed, and then the second inner rolling needle 500 and the second outer rolling needle 300 are driven to move in the radial direction to clamp or release the material belt.

The inclined planes of the first movable seat 320 and the second movable seat 510 extend along the extending direction of the winding needle mechanism and incline towards the winding needle, so that when the winding needle mechanism extends, the first inner winding needle 400 and the second inner winding needle 500 can be conveniently closed to clamp the material belt.

In this embodiment, the process of adjusting the circumference of the needle winding mechanism is as follows:

the open-close needle adjusting assembly 700 is arranged on the outer side of the winding needle mechanism, after the battery core is discharged, the vacant time is utilized, the first driving piece 720 of the open-close needle adjusting assembly 700 drives the first rotating motor 710 to be close to the first adjusting assembly 600, the linear adjusting piece 730 of the first rotating motor 710 is inserted into the linear groove 631 of the adjusting screw 630, the controller controls the first rotating motor 710 to rotate to drive the adjusting screw 630 to rotate according to the detected deviation trend of the tab, so that the sliding block 620 is driven to slide along the sliding groove 640, the first cam 650 is controlled to move, the distance of the extending end 321 of the first movable seat 320 extending out of the winding needle seat 100 is adjusted, the distance between the second outer winding needle 300 and the first outer winding needle 200 is adjusted, and the circumference of the winding needle mechanism is adjusted.

When the circumference of the needle winding mechanism needs to be increased, the first rotating motor 710 drives the adjusting screw 630 to drive the sliding block 620 to move towards the direction close to the material belt, the distance that the extending end 321 of the first movable seat 320 extends out of the needle winding seat 100 is shortened, and then the second outer winding needle 300 is driven to be far away from the first outer winding needle 200, so that the circumference of the needle winding mechanism is increased; when the circumference of the needle winding mechanism needs to be reduced, the first rotating motor 710 drives the adjusting screw 630 to drive the sliding block 620 to move towards the direction away from the material belt, the distance that the extending end 321 of the first movable seat 320 extends out of the needle winding seat 100 is lengthened, and then the second outer winding needle 300 is driven to be close to the first outer winding needle 200, so that the circumference of the needle winding mechanism is reduced.

At the same time, the front tip assembly 800 is driven by a driving member to move closer to or away from the second outer winding needle 300. When the circumference of the needle rolling mechanism needs to be increased, the front needle mouth assembly 800 is controlled to be close to the needle rolling mechanism, the inclined plane of the inner needle fixing ring 810 is matched with the inclined plane of the second outer rolling needle 300, the ball plunger 840 abuts against the second outer rolling needle 300, and the free end of the second outer rolling needle 300 is far away from the first outer rolling needle 200; when the circumference of the needle rolling mechanism needs to be reduced, the front needle mouth assembly 800 is controlled to be far away from the needle rolling mechanism, the inclined plane of the inner needle fixing ring 810 is matched with the inclined plane of the second outer rolling needle 300, the ball plunger 840 abuts against the second outer rolling needle 300, and the free end of the second outer rolling needle 300 is close to the first outer rolling needle 200; converting the axial distance into a radial distance, the free end of the second outer wrap needle 300 is restricted, and the second outer wrap needle 300 is kept parallel to the first outer wrap needle 200.

The above embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. Equivalent substitutes or changes made by the technical personnel in the technical field on the basis of the utility model are all within the protection scope of the utility model. The protection scope of the present invention is subject to the claims.

Claims

1. A needle winding mechanism is characterized by comprising a needle winding base, a first outer winding needle, a second outer winding needle, a first adjusting component and a first movable base; wherein

2. The winding needle mechanism according to claim 1, wherein the first adjusting assembly further comprises a first annular seat disposed around the winding needle seat along a direction perpendicular to the radial direction and an adjusting screw fixedly disposed on the first annular seat, the adjusting screw is in threaded connection with the sliding block, a first cam is disposed on the sliding block, the first cam is engaged with the protruding end of the first movable seat, and the adjusting screw drives the sliding block to slide in the radial direction.

3. The needle winding mechanism of claim 1, further comprising a front needle mouth assembly disposed at the free ends of the first and second winding needles, the front needle mouth assembly comprising an inner needle fixing ring, an outer needle fixing ring, a connecting block and a ball plunger; the inner needle fixing ring and the outer needle fixing ring are arranged in a concentric circle manner to form an accommodating space for accommodating the free ends of the first outer winding needle and the second outer winding needle; the outer needle fixing ring is provided with an opening at a position corresponding to the second outer winding needle, the free end of the second outer winding needle is provided with an inclined plane, and the inner needle fixing ring is provided with another inclined plane matched with the inclined plane; the connecting block sets up at the opening part, with the solid fixed ring fixed connection of inner needle, the ball plunger sets up on the connecting block and stretches into the solid fixed ring of outer needle through the opening, makes the inclined plane of the outer needle of rolling up of second and the solid fixed ring's of inner needle inclined plane cooperate.

4. The needle winding mechanism according to claim 1, wherein a first groove is formed in the first outer winding needle, a first inner winding needle is movably disposed in the first groove, and a plurality of elastic members are disposed between the first groove and the first inner winding needle.

5. The needle winding mechanism according to claim 4, wherein the first inner winding needle is formed with a long slit along an axial direction of the needle winding mechanism, and a structure with two ends connected and a middle separated is formed, the first inner winding needle is provided with a plurality of through holes at a side close to the first groove, the elastic member is arranged in the through holes, and one end of the elastic member abuts against an inner surface of the long slit.

6. The needle winding mechanism according to claim 5, wherein at least one bending portion is formed in the middle of the long slit.

7. The needle winding mechanism according to claim 2, wherein a second groove is formed in the second outer winding needle, a second inner winding needle is movably disposed in the second groove, and the second inner winding needle and the second outer winding needle are connected through a plurality of elastic members and positioning pins.

8. The needle winding mechanism according to claim 7, wherein a second movable seat is fixedly connected to the second inner winding needle, the second movable seat is disposed in the winding needle seat, extends out of the winding needle seat in the radial direction, and can slide in the winding needle seat in the radial direction, and a second cam is fixedly disposed on the first annular seat, and the second cam is matched with the extending end of the second movable seat.

9. The needle winding mechanism according to claim 8, further comprising a second annular seat fixedly arranged opposite to the needle winding seat, wherein the second annular seat is connected with the first annular seat through a plurality of second guide rods axially arranged along the needle winding mechanism, and the first annular seat can move along the second guide rods to drive the first cam and the second cam to slide on the inclined surfaces of the first movable seat and the second movable seat.

10. The needle winding mechanism according to claim 8, wherein the extending ends of the first movable seat and the second movable seat are provided with inclined surfaces, and the inclined surfaces extend along the extending direction of the needle winding mechanism and incline towards the winding needle.