CN210837996U - Button type battery cell winding head, winding device and button type battery cell sheet-making winding machine - Google Patents

Abstract

The utility model provides a button type battery cell winding head, a winding device and a button type battery cell slice-making winder, wherein the button type battery cell winding head comprises a body, an outward push needle unit, an outward pull needle unit and three winding needle units arranged on the body, the winding needle units comprise a first winding needle and a second winding needle which are coaxially arranged, and a first needle body of the first winding needle and a second needle body of the second winding needle are oppositely arranged, so that the first winding needle and the second winding needle can move oppositely or oppositely; the outward pushing needle unit is arranged at a winding station of the button type battery cell winding head and used for pushing the second needle body at the winding station to the first needle body; the outer drawing needle unit is arranged at a blanking station of the button type battery cell winding head and used for drawing out a second needle body at the blanking station to separate the second needle body from the first needle body. And a winding device provided with the button type battery cell winding head and a button type battery cell sheet-making winding machine. The utility model has the advantages of can avoid taking place the deformation when button formula electricity core unloading.

Description

Button type battery cell winding head, winding device and button type battery cell sheet-making winding machine

Technical Field

The utility model belongs to the technical field of the electric core coiling technique and specifically relates to a winding device, button type electric core film-making winder that button type electric core coiled head and was provided with this button type electric core coiled head are related to.

Background

Lithium batteries are widely applied to industries such as notebook computers, electric tools, new energy automobiles and the like, and with the development of the industries, the demand of the lithium batteries is continuously increased, but the requirements on the lithium batteries are higher and higher. At present, a winding needle of a three-station winding head on the market comprises a barrel body and two needle bodies arranged in the barrel body, and the two needle bodies can be connected with the barrel body in a sliding mode along the axial direction of the barrel body. When the coiled electric core needs to be dismounted from the coiling head, a first needle body of the coiling needle needs to be firstly drawn out, then a second needle body of the coiling needle is drawn out, and due to the inherent structural design of the coiling needle, when the needle body is drawn out, the needle body easily drives the pole piece and the diaphragm to move together, so that the electric core after the needle body is drawn out is deformed, and particularly, for a button type electric core, the influence on the needle body is larger when the needle body is drawn out.

In addition, the existing winding head needs to be provided with an ejector pin to support and fix two needle bodies of the winding needle, so that the extending ejector pin is prevented from bending and deforming due to insufficient rigidity. However, the existing winding needle and the thimble are linked only through the needle body, that is, when the pole piece is wound, the rotation of the thimble is driven by the needle body of the winding needle, and this can cause the needle body to be twisted and deformed in the winding process of the pole piece, which affects the quality of the wound battery cell and reduces the service life of the winding needle.

Disclosure of Invention

In order to solve the above problem, the main object of the present invention is to provide a button-type electrical core winding head capable of avoiding deformation during blanking of button-type electrical core.

Another object of the present invention is to provide a winding device with the above button-type electrical core winding head.

The utility model discloses a still another purpose provides a be provided with above-mentioned coiling mechanism's button electricity core film-making winder.

In order to realize the main object of the utility model, the utility model provides a button type electric core winding head has coiling station and unloading station, button type electric core winding head includes body and three book needle unit, three book needle unit distributes along the circumference of body, wherein, book needle unit includes first book needle and second book needle, first book needle includes first barrel and the first needle body that sets up in first barrel slidably, first barrel is rotationally installed on the body around self axis, the front end of body is provided with the connecting seat, second book needle and first book needle coaxial arrangement, second book needle includes second barrel and the second needle body that sets up in the second barrel slidably, the second barrel is rotationally installed on the connecting seat around needle body's axis, second needle body and first relative setting; the button type battery cell winding head further comprises an outward pushing needle unit and an outward pulling needle unit, the outward pushing needle unit drives a second needle body at the winding station to move towards the first needle body, and the outward pulling needle unit drives a second needle body at the blanking station to move back towards the first needle body.

It is from top to bottom visible, when the structural design of book needle unit can make button electricity core carry out the unloading in unloading station department, the first needle body and the second needle body of book needle unit can be opposite direction and remove to draw needle unloading in-process at button electricity core and make pole piece, diaphragm receive opposite direction's frictional force, thereby make pole piece, diaphragm atress balanced, avoid the button electricity core after the unloading to take place to warp. In addition, set up the outer push needle unit at the coiling station for when needs to coil pole piece, diaphragm, outer push needle unit can promote the second needle body of coiling station department and move to first needle body, makes second needle body and first needle body closed, carries out the centre gripping to pole piece and diaphragm. And set up the needle unit of taking out outward in unloading station department, so that when needs carry out the unloading to the button electricity core, the second needle body that the needle unit of taking out outward can stimulate unloading station department withdraws from to the withdrawal from of cooperation first needle body is carried out the unloading to the button electricity core.

The first gear is sleeved on the first barrel, the second gear is sleeved on the second barrel, the needle rolling unit further comprises a linkage component, the linkage component comprises a mounting seat and a rotating shaft, the mounting seat is mounted on the connecting seat, the rotating shaft is rotatably mounted on the mounting seat around the axis of the rotating shaft, the rotating shaft is parallel to the first needle body, a third gear meshed with the first gear is arranged at the first end of the rotating shaft, and a fourth gear meshed with the second gear is arranged at the second end of the rotating shaft.

It is from top to bottom visible, the linkage subassembly can make first book needle and second book needle keep synchronous rotation, avoids at the pole piece coiling in-process, and torsional deformation takes place for first needle body and/or second needle body, when guaranteeing the button formula electricity core quality of coiling out, improves the life of first book needle and second book needle.

The utility model provides a further scheme is, button type electricity core coiling head still includes interior pin-withdrawing unit, interior pin-withdrawing unit is located the end of body, and unloading station department is located to interior pin-withdrawing unit, interior pin-withdrawing unit includes first fixing base, a drive mechanism and first pusher dog subassembly, a drive mechanism installs on first fixing base, the execution end of first pusher dog subassembly is liftoff with the first needle body detachable of unloading station department is connected, the axial displacement of the execution end of first pusher dog subassembly along first needle body of a drive mechanism drive.

The first driving component comprises a first sliding seat, a first hinging seat, a second connecting rod, a second fixing seat, a second sliding seat and a third connecting rod, wherein the first sliding seat is connected with the first guide rail in a sliding way, a first driving mechanism drives the first sliding seat to slide along the first guide rail, the first sliding seat is provided with a first connecting rod along the extending direction of the first guide rail, the middle part of the second connecting rod is hinged with the first hinging seat, the first end of the second connecting rod is hinged with the first connecting rod, the second end of the second connecting rod is provided with a first guide groove along the extending direction of the second connecting rod, the second fixing seat is provided with a second guide rail which is parallel to the first needle body, the second sliding seat is arranged on the second guide rail in a sliding way, the third connecting rod is arranged on the second sliding seat, the first end of the third connecting rod is provided with a first guide piece, the first guide piece is slidably arranged in the first guide groove, the second end of the third connecting rod is provided with a first claw part, and the first claw part is separably connected with a first pull ring of the first needle body at the blanking station.

It is thus clear that interior pin withdrawing unit is used for taking out the needle at the first needle body of unloading station department outside the cooperation of unloading station department pin withdrawing unit, makes first needle body and second needle body reverse separation, realizes the unloading of button electricity core and handles to prevent that the button electricity core from taking place to warp.

A further scheme is that the button-type battery cell winding head further comprises an anti-withdrawal needle unit, the anti-withdrawal needle unit is located at the tail end of the body, the anti-withdrawal needle unit is arranged at the winding station, the anti-withdrawal needle unit comprises a third fixing seat, a second driving mechanism and a second pusher dog assembly, the second driving mechanism is installed on the third fixing seat, the executing tail end of the second pusher dog assembly is detachably connected with the first needle body at the winding station, and the second driving mechanism drives the executing tail end of the second pusher dog assembly to move axially along the first needle body.

A third guide rail is arranged on the third fixed seat, the second pusher dog assembly comprises a third sliding seat, a second hinged seat, a fifth connecting rod, a fourth fixed seat, a fourth sliding seat and a sixth connecting rod, the third sliding seat is connected with the third guide rail in a sliding way, the second driving mechanism drives the third sliding seat to slide along the third guide rail, the third sliding seat is provided with a fourth connecting rod along the extending direction of the third guide rail, the middle part of the fifth connecting rod is hinged with the second hinged seat, the first end of the fifth connecting rod is hinged with the fourth connecting rod, the second end of the fifth connecting rod is provided with a second guide groove along the extending direction of the fifth connecting rod, the fourth fixed seat is provided with a fourth guide rail which is parallel to the first needle body, the fourth sliding seat is arranged on the fourth guide rail in a sliding way, the sixth connecting rod is arranged on the fourth sliding seat, the first end of the sixth connecting rod is provided with a second guide piece, the second guide piece is slidably arranged in the second guide groove, the second end of the sixth connecting rod is provided with a second claw part, and the second claw part is separably connected with the first pull ring of the first needle body at the winding station.

It is thus clear that the needle unit is prevented moving back is used for at pole piece and diaphragm winding in-process, with the front end of the first needle body top to the body of coiling station department to the cooperation pushes away the release of needle unit to the second needle body outward, thereby avoids pole piece and diaphragm winding in-process, and first needle body and the separation of second needle body guarantee the reliability of pole piece and diaphragm winding.

Another preferred scheme is that the button-type battery cell winding head further comprises a fifth fixing seat, the fifth fixing seat is arranged at the second winding needle, a fifth guide rail and a sixth guide rail are arranged on the fifth fixing seat, the fifth guide rail and the sixth guide rail are both parallel to the second needle body, the outer push needle unit is arranged at the winding station and comprises a third driving mechanism and a third pusher dog assembly, the third pusher dog assembly is slidably mounted on the fifth guide rail and detachably connected with the second needle body at the winding station, the third driving mechanism drives the third pusher dog assembly to slide along the fifth guide rail, the outer pull needle unit is arranged at the blanking station and comprises a fourth driving mechanism and a fourth pusher dog assembly, the fourth pusher dog assembly is slidably mounted on the sixth guide rail and detachably connected with the second needle body at the blanking station, and the fourth driving mechanism drives the fourth pusher dog assembly to slide along the sixth guide rail.

The further scheme is that the button type battery cell winding head further comprises a driving unit, and the driving unit drives the first winding needles of the three winding needle units to rotate respectively.

It is from top to bottom visible, through the setting to drive unit, make drive unit can rotate at the first volume needle of coiling station department drive, so that the book needle unit of coiling station department coils pole piece and diaphragm, still make drive unit can drive first volume needle in the rubberizing station department of button electricity core coiling head and rotate, so that the book needle unit cooperation rubberizing unit that the rubberizing station goes out carries out the rubberizing to the button electricity core of coiling, avoid the button electricity core of coiling to scatter.

In order to realize the utility model discloses a further purpose, the utility model provides a winding device, insert including the pole piece and cut the unit, cut diaphragm unit, rubberizing unit and button type electric core coiling head, wherein, button type electric core coiling head is foretell button type electric core coiling head, and the pole piece inserts and cuts the unit and cut diaphragm unit setting in coiling station department, and the rubberizing unit sets up in button type electric core coiling head's rubberizing station department.

In order to realize the utility model discloses a further purpose, the utility model provides a button type electricity core film-making winder, wherein, including foretell coiling mechanism.

Drawings

Fig. 1 is a structural view of an embodiment of a winding apparatus according to the present invention, with some components omitted.

Fig. 2 is a partial structural view of the winding needle unit according to the embodiment of the winding device of the present invention.

Fig. 3 is an enlarged view at a in fig. 1.

Fig. 4 is a structural view of the inner draw pin unit of the embodiment of the winding device of the present invention, with some components omitted.

Fig. 5 is a first partial structural view of the embodiment of the winding device of the present invention.

Fig. 6 is a second partial structure view of the embodiment of the winding device of the present invention.

The present invention will be further explained with reference to the drawings and examples.

Detailed Description

Winding device embodiment:

referring to fig. 1, the winding device 100 includes a pole piece insertion cutting unit, a separator feeding unit, a separator cutting unit, a rubberizing unit, and a button-type cell winding head 10.

The button-type battery cell winding head 10 is provided with a winding station 102, a rubberizing station 103 and a blanking station 104, and it should be noted that the winding station 102, the rubberizing station 103 and the blanking station 104 are integrally arranged in fixed positions relative to the winding device 100, that is, no matter how the body 1 of the button-type battery cell winding head 10 rotates and reverses, after the body 1 finishes reversing, the positions of the winding station 102, the rubberizing station 103 and the blanking station 104 are fixed and unchanged.

The pole piece inserting and cutting unit and the diaphragm feeding unit are used for feeding materials to the winding needle unit 2 at the winding station 102, and the diaphragm cutting unit is arranged at the winding station 102 so as to assist the button-type cell winding head 10 at the winding station 102 to wind the positive pole piece, the negative pole piece and the diaphragm which are stacked in sequence to form the button-type cell. The rubberizing unit is arranged at the rubberizing station 103, and is mainly used for assisting the button-type cell winding head 10 to perform rubberizing treatment on the wound button-type cell at the rubberizing station 103 so as to prevent the wound button-type cell from scattering. The blanking station 104 may be provided with a blanking unit, so that the blanking unit can take the coiled electric core away from the blanking station 104 and transfer the coiled electric core to other devices or other units. The reversing process of the body 1 is to move the button-type battery cell wound by the winding station 102 to the rubberizing station 103 for rubberizing, and then move the button-type battery cell subjected to rubberizing at the rubberizing station 103 to the blanking station 104 for blanking.

The button type battery cell winding head 10 comprises a body 1, a winding needle unit 2, a fifth fixing seat 3, an outer push needle unit 4, an outer withdrawing needle unit 5, an inner withdrawing needle unit 6, an anti-withdrawing needle unit 7, a driving unit 8 and a reversing unit. Wherein, roll up needle unit 2's quantity and be three, three roll up needle unit 2 and install on body 1, and three roll up needle unit 2 and distribute along body 1's circumference. The body 1 is provided with a connecting seat 11, and the connecting seat 11 is positioned at the front end of the body 1.

Referring to fig. 2, each winding needle unit 2 includes a first winding needle 21, a second winding needle 22, and a linkage assembly 23. The first winding needle 21 comprises a first cylinder 211 and a first needle 212, the first cylinder 211 is rotatably mounted on the body 1 around the axis of the first cylinder 211, and a first gear 2111 is sleeved on the first cylinder 211. The first needle 212 is slidably installed in the first barrel 211 along the axial direction of the first barrel 211, and a first pull ring 2121 is provided at the tip of the first needle 212.

The second winding needle 22 and the first winding needle 21 are coaxially arranged, and the second winding needle 22 comprises a second barrel 221 and a second needle body 222. The second cylinder 221 is rotatably mounted on the connecting seat 11 around its own axis, and the second cylinder 221 is provided with a second gear 2211. The second needle 222 is slidably installed in the second cylinder 221 along the axial direction of the second cylinder 221, the end of the second needle 222 is provided with a second pull ring 2221, and the second needle 222 is disposed opposite to the first needle 212.

The linkage assembly 23 includes a mounting seat 231 and a rotating shaft 232, and the mounting seat 231 is mounted on the connecting seat 11. The rotation shaft 232 is disposed parallel to the first needle body 212, and the rotation shaft 232 is rotatably mounted on the mounting seat 231 about its axis. A third gear 2321 and a fourth gear 2322 are respectively disposed at two ends of the rotating shaft 232, wherein the third gear 2321 is engaged with the first gear 2111 of the first cylinder 211, and the fourth gear 2322 is engaged with the second gear 2211 of the second cylinder 221.

Through the structural design to rolling up needle unit 2 for when button electricity core carries out the unloading, roll up first needle body 212 and the second needle body 222 of needle unit 2 and can carry out the removal of carrying on the back of the body mutually, in order to draw the needle in-process at book needle unit 2, the pole piece of button electricity core, diaphragm receive opposite direction's frictional force, thereby make pole piece and diaphragm atress balanced, avoid the button electricity core after the unloading to take place to warp. And the linkage assembly 23 is arranged, so that the first winding needle 21 and the second winding needle 22 can keep synchronous rotation, the first needle body 212 and/or the second needle body 222 are prevented from being twisted and deformed in the pole piece winding process, and the service life of the first winding needle 21 and the second winding needle 22 is prolonged while the quality of the wound button-type battery cell is ensured. It should be noted that, the needle drawing operation of the first winding needle 21 and the needle drawing operation of the second winding needle 22 at the blanking station 104 are preferably performed simultaneously.

With reference to fig. 3, the fifth fixing seat 3 is disposed at the second winding pin 22, that is, the second winding pin 22 is located between the fifth fixing seat 3 and the body 1. The fifth fixing seat 3 is provided with a fifth guide rail 31 and a sixth guide rail 32, and both the fifth guide rail 31 and the sixth guide rail 32 are parallel to the second needle body 222.

The outward push needle unit 4 is disposed at the winding station 102, and is configured to perform a push needle operation on the second winding needle 22 at the winding station 102, so that the second needle body 222 moves toward the first needle body 212, and the first needle body 212 and the second needle body 222 are closed to clamp the pole piece and the septum. The push-out needle unit 4 comprises a third driving mechanism 41 and a third finger assembly 42, the third finger assembly 42 is slidably mounted on the fifth guide rail 31, the third finger assembly 42 is detachably connected to the second pull ring 2221 of the second needle body 222 at the winding station 102, and the third driving mechanism 41 is used for driving the third finger assembly 42 to slide along the fifth guide rail 31, so that the third finger assembly 42 pushes the second needle body 222 at the winding station 102 to the first needle body 212 at the winding station 102 through the second pull ring 2221.

Specifically, the third finger assembly 42 includes a fifth sliding seat 421 and a push rod 422, the fifth sliding seat 421 is slidably mounted on the fifth guide rail 31 along the extending direction of the fifth guide rail 31, the push rod 422 is mounted on the fifth sliding seat 421 and is disposed toward the second pull ring 2221 of the second needle body 222 at the winding station 102, preferably, the front end of the push rod 422 is provided with a roller 4221, the axis of the roller 4221 is perpendicular to the axis of the second winding needle 22, and the roller 4221 is abutted to the second pull ring 2221 of the second needle body 222. Because the second needle body 222 at the winding station 102 needs to be pushed against by the push rod 422 in the winding process of the pole piece and the membrane to prevent the second needle body 222 from retracting in the winding process of the pole piece and the membrane, the roller 4221 is arranged on the push rod 422, so that when the winding needle unit 2 at the winding station 102 rotates, the roller 4221 can reduce the friction force contacting with the second pull ring 2221 of the second needle body 222, and the rotation of the winding needle unit 2 is smoother. The third driving mechanism 41 drives the fifth sliding seat 421 to slide along the fifth guide rail 31, and preferably, the third driving mechanism 41 is an air cylinder, and a rod body of the air cylinder is fixedly connected with the fifth sliding seat 421.

The outer needle drawing unit 5 is disposed at the blanking station 104 and is configured to perform a needle drawing operation on the second winding needle 22 of the blanking station 104, so that the second needle body 222 moves away from the first needle body 212 to cooperate with the needle drawing operation performed by the inner needle drawing unit 6 on the first winding needle 21 at the blanking station 104, and thus the second needle body 222 and the first needle body 212 move away from each other at the same time. The needle withdrawing unit 5 comprises a fourth driving mechanism 51 and a fourth finger assembly 52, the fourth finger assembly 52 is slidably mounted on the sixth guide rail 32, the fourth finger assembly 52 is detachably connected to the second pull ring 2221 of the second needle 222 at the blanking station 104, and the fourth driving mechanism 51 is configured to drive the fourth finger assembly 52 to slide along the sixth guide rail 32, so that the fourth finger assembly 52 withdraws the second needle 222 at the blanking station 104 from the first needle 212 at the blanking station 104 through the second pull ring 2221.

Specifically, fourth finger assembly 52 includes a sixth shoe 521 and a pull rod 522, sixth shoe 521 is slidably mounted on sixth rail 32 along the extending direction of sixth rail 32, and pull rod 522 is mounted on sixth shoe 521. A third claw part 5221 is arranged on one end of the pull rod 522 facing the second needle body 222, the third claw part 5221 is located between the connecting seat 11 at the blanking station 104 and the second pull ring 2221 of the second needle body 222, and the third claw part 5221 is used for hooking the second pull ring 2221 of the second needle body 222 when the second needle body 222 at the blanking station 104 is pulled away. Preferably, an avoiding groove is formed in the second needle body 222, and the avoiding groove is used for avoiding the second pull ring 2221 of the second needle body 222 at the blanking station 104 when the fourth finger assembly 52 is reset, so as to avoid pushing the second needle body 222 to move. In addition, the work process that the groove is avoided being arranged to enable the button type battery cell winding head 10 to be smoother and better in efficiency, and the situation that space and time are provided for resetting of the fourth pusher dog component 52 through the rotation of the short-time pause body 1 in the process of station switching of the winding needle unit 2 is avoided. The fourth driving mechanism 51 drives the sixth sliding seat 521 to slide along the sixth guide rail 32, and preferably, the fourth driving mechanism 51 is an air cylinder, and a rod body of the air cylinder is fixedly connected with the sixth sliding seat 521.

With reference to fig. 4 and 5, the inner needle-drawing unit 6 is located at the end of the body 1, and the inner needle-drawing unit 6 is disposed at the blanking station 104 and is used for cooperating with the outer needle-drawing unit 5 to blank the button-type core electrode at the blanking station 104. The inner needle drawing unit 6 comprises a first fixed seat 61, a first driving mechanism 62 and a first pusher dog assembly 63.

The first fixed seat 61 is installed on the frame 101 of the winding device 100, the first driving mechanism 62 is installed on the first fixed seat 61, the execution end of the first pusher dog assembly 63 is detachably connected with the first needle 212 at the blanking station 104, and the first driving mechanism 62 is used for driving the execution end of the first pusher dog assembly 63 to move along the axial direction of the first needle 212.

Specifically, the first fixing seat 61 is provided with a first guide rail 611, and the first guide rail 611 is parallel to the first needle 212. First finger assembly 63 includes a first sliding seat 631, a first hinge seat 633, a second link 634, a second fixed seat 635, a second sliding seat 636, and a third link 637. The first sliding seat 631 is slidably connected to the first rail 611 along the extending direction of the first rail 611, and a first link 632 is disposed on the first sliding seat 631 and extends along the extending direction of the first rail 611. The first driving mechanism 62 drives the first sliding seat 631 to slide along the first guide rail 611, and preferably, the first driving mechanism 62 is an air cylinder, and a rod body of the air cylinder is connected with the first sliding seat 631.

The first hinge base 633 is mounted on the frame 101, the middle portion of the second link 634 is hinged to the first hinge base 633, the first end of the second link 634 is hinged to the first link 632, and the second end of the second link 634 is provided with a first guide groove 6341 along the extending direction thereof.

The second fixing base 635 is installed on the rack 101, a second guide rail 6351 parallel to the first needle 212 is disposed on the second fixing base 635, and the second sliding base 636 is slidably installed on the second guide rail 6351 along an extending direction of the second guide rail 6351. The third link 637 is parallel to the first needle body 212, and the third link 637 is mounted on the second sliding seat 636, a first end of the third link 637 is provided with a first guide 6371, the first guide 6371 is slidably disposed in the first guide groove 6341, and a second end of the third link 637 is provided with a first claw 6372, and the first claw 6372 is detachably engaged with the first pull ring 2121 of the first needle body 212 at the blanking station 104.

The anti-withdrawing needle unit 7 is located at the tail end of the body 1, the anti-withdrawing needle unit 7 is arranged at the winding station 102 and is used for being matched with the outward pushing needle unit 4 and pushing the first needle body 212 at the winding station 102 to the front end of the body 1 in the winding process of the pole piece and the membrane, so that the outward pushing needle unit 4 is matched for pushing the second needle body 222 at the winding station 102, the separation of the first needle body 212 and the second needle body 222 in the winding process of the pole piece and the membrane is avoided, and the reliability of the winding of the membrane and the pole piece is ensured.

The needle withdrawing prevention unit 7 comprises a third fixed seat, a second driving mechanism and a second pusher dog assembly, the third fixed seat is installed on the rack 101, the second driving mechanism is installed on the third fixed seat, and the execution tail end of the second pusher dog assembly is separably connected with the first needle body 212 at the winding station 102. The second drive mechanism is used to drive the actuation end of the second finger assembly to move axially along the first needle 212.

Specifically, a third guide rail is disposed on the third fixing seat, and the third guide rail is parallel to the first needle 212. The second pusher dog subassembly includes third sliding seat, the articulated seat of second, fifth connecting rod, fourth fixing base, fourth sliding seat and sixth connecting rod.

The third sliding seat is connected with the third guide rail in a sliding mode along the extending direction of the third guide rail, a fourth connecting rod is arranged on the third sliding seat, and the fourth connecting rod extends along the extending direction of the third guide rail. The second driving mechanism drives the third sliding seat to slide along the third guide rail, preferably, the second driving mechanism is an air cylinder, and a rod body of the air cylinder is connected with the third sliding seat.

The second is articulated to be installed on frame 101, and the middle part and the articulated seat of second of fifth connecting rod are articulated, and fifth connecting rod first end and fourth connecting rod are articulated, and the second end of fifth connecting rod is provided with the second guide way along the extending direction of self.

The fourth fixing base is installed on the rack 101, wherein the fourth fixing base and the second fixing base 635 can be combined into a common fixing base. The fourth fixed seat is provided with a fourth guide rail parallel to the first needle body 212, and the fourth sliding seat is slidably mounted on the fourth guide rail along the extending direction of the fourth guide rail. The sixth link is parallel to the first needle 212 and is mounted on the fourth sliding seat, a first end of the sixth link is provided with a second guide member slidably disposed in the second guide groove, and a second end of the sixth link is provided with a second claw portion detachably engaged with the first pull ring 2121 of the first needle 212 at the winding station 102.

With reference to fig. 6, the driving unit 8 is configured to drive the first winding needles 21 of the three winding needle units 2 to rotate, so that the driving unit 8 can drive the winding needle unit 2 at the winding station 102 to rotate, so as to wind the pole piece and the diaphragm at a fixed length, and form a button-type electrical core; and the driving unit 8 is also enabled to cooperate with the needle winding unit 2 at the rubberizing station 103 to drive the needle winding unit to rotate so as to cooperate with the rubberizing unit to rubberize the button-type battery cell at the winding position.

Preferably, in the present embodiment, the driving unit 8 includes three first motors 81 that work independently, and one first motor 81 is disposed corresponding to one winding needle unit 2, that is, one first motor 81 controls one winding needle unit 2 to rotate independently. The first barrel 211 of the first winding pin 21 is sleeved with a first belt wheel 2112 at the distal end side of the body 1, the first motor 81 of the first motor 81 is provided with a second belt wheel 82, and the first belt wheel 2112 and the second belt wheel 82 are connected by a transmission belt.

The reversing unit is used for driving the body 1 to rotate around the rotation axis of the body 1, so that the three needle winding units 2 on the body 1 are switched among the winding station 102, the rubberizing station 103 and the blanking station 104. Specifically, the end side of the body 1 is provided with a fifth gear 12, and the reversing unit includes a second motor 81, a sixth gear is provided on a shaft of the motor 81 of the second motor 81, and the fifth gear 12 is engaged with the sixth gear.

The operation of the winding device 100 is described below with reference to fig. 1 to 6:

when the pole piece and the diaphragm need to be wound, the pole piece inserting and cutting unit and the diaphragm feeding unit respectively transfer the pole piece and the diaphragm to the first needle body 212 of the first winding needle 21 of the winding tool. Subsequently, the pole piece is inserted into the cutting unit and the diaphragm conveying unit for resetting.

Then, the third driving mechanism 41 of the outer push-out needle unit 4 drives the third finger assembly 42 to push the second needle body 222 of the second winding needle 22 at the winding station 102 to the front end of the body 1, so that the first needle body 212 and the second needle body 222 at the winding station 102 are closed to clamp the pole piece and the diaphragm, and the third driving mechanism 41 controls the third finger assembly 42 to be kept at the push-out position. Meanwhile, the second driving mechanism of the anti-withdrawing needle unit 7 drives the second pusher dog assembly to move towards the first needle body 212 of the first winding needle 21 at the winding station 102 so as to push the first needle body 212, so that the first needle body 212 and/or the second needle body 222 are/is prevented from withdrawing in the winding process of the pole piece and the diaphragm by matching with the outward pushing needle unit 4, and the winding quality of the button type battery cell is ensured.

Then, the driving unit 8 drives the winding needle unit 2 at the winding station 102 to wind the pole piece and the diaphragm, and after the winding of the set length is completed, the pole piece insertion cutting unit and the diaphragm cutting unit respectively cut the pole piece and the diaphragm. Subsequently, the third driving mechanism 41 of the outer push needle unit 4 drives the third finger assembly 42 to reset, and the second driving mechanism of the anti-retreat needle unit 7 drives the second finger assembly to reset, so as to release the pushing of the second needle body 222 and the first needle body 212.

Then, the reversing unit drives the body 1 to rotate a station, so that the button-type battery cell wound at the winding station 102 is transferred to the rubberizing station 103, and the rubberizing unit performs rubberizing treatment on the wound button-type battery cell. When the adhesive is pasted, the driving unit 8 drives the first winding needle 21 at the pasting station 103 to rotate. And when the rubberizing unit is used for rubberizing the button-type electric core, the pole piece inserting and cutting unit, the diaphragm feeding unit, the outer push needle unit 4 and the anti-withdrawing needle unit 7 at the winding station 102 are used for repeating the above operations.

After the gluing unit finishes gluing the button-type battery cell, the reversing unit drives the body 1 to rotate by one station again, so that the button-type battery cell which is glued at the gluing station 103 is transferred to the blanking station 104 for blanking. During blanking, the fourth driving mechanism 51 of the outer needle drawing unit 5 drives the fourth finger assembly 52 to draw the second needle body 222 at the blanking station 104 away from the first needle body 212, and simultaneously, the first driving mechanism 62 of the inner needle drawing unit 6 drives the first finger assembly 63 to draw the first needle body 212 at the blanking station 104 away from the second needle body 222, so that the first needle body 212 and the second needle body 222 move in opposite directions simultaneously, and at this time, the blanking unit takes away the battery cell at the blanking station 104. Subsequently, the fourth driving mechanism 51 of the outer needle drawing unit 5 drives the fourth finger assembly 52 to reset, the fourth finger assembly 52 does not operate the second needle body 222, and simultaneously, the first driving mechanism 62 of the inner needle drawing unit 6 drives the first finger assembly 63 to reset, so that the first needle body 212 is reset. In the blanking process of the button-type battery cell at the blanking station 104, the rubberizing unit at the rubberizing station 103 repeats the rubberizing operation again.

After the button-type battery cell at the blanking station 104 finishes blanking processing, the reversing unit drives the body 1 to rotate by one station again, so that the winding needle unit 2 of the blanking station 104 finishing blanking processing is transferred to the winding station 102, and the button-type battery cell winding process is ready to be repeated.

To sum up, the utility model discloses a structural design to take-up device for take place to warp when take-up device has the unloading of avoiding button formula electricity core, and can prevent to roll up the needle body and take place torsional deformation's advantage at pole piece coiling in-process.

Button electricity core film-making winder embodiment:

the button-type cell slice-making winder of the embodiment comprises the winding device, and the button-type cell slice-making winder provided with the winding device can avoid deformation of a button-type cell during blanking and can prevent a winding needle body from generating torsional deformation in the pole piece winding process. The button-type cell slice-making winder further comprises a pole piece unwinding device, a diaphragm unwinding device, a deviation correcting device and other cell slice-making winders which are frequently arranged, so that redundant description is omitted herein.

Finally, it should be emphasized that the above-described embodiments are merely preferred examples of the present invention, and are not intended to limit the invention, as those skilled in the art will appreciate that various changes and modifications may be made, and any and all modifications, equivalents, and improvements made, while remaining within the spirit and principles of the present invention, are intended to be included within the scope of the present invention.

Claims (10)

1. The button type battery cell winding head is provided with a winding station and a blanking station, and comprises a body and three winding needle units, wherein the three winding needle units are distributed along the circumferential direction of the body;

the method is characterized in that:

the needle winding unit includes:

the first winding needle comprises a first barrel body and a first needle body which is slidably arranged in the first barrel body, and the first barrel body is rotatably arranged on the body around the axis of the first barrel body;

the front end of the body is provided with a connecting seat, the second winding needle and the first winding needle are coaxially arranged, the second winding needle comprises a second barrel and a second needle body which is slidably arranged in the second barrel, the second barrel is rotatably arranged on the connecting seat around the axis of the second barrel, and the second needle body and the first needle body are oppositely arranged;

button electricity core winding head still includes:

an outer push-pin unit that drives the second pin at the winding station to move toward the first pin;

and the outer needle drawing unit drives the second needle body at the blanking station to move back to the first needle body.

2. The button-type cell winding head of claim 1, wherein:

the first cylinder is sleeved with a first gear;

the second cylinder is sleeved with a second gear;

the needle rolling unit further comprises a linkage assembly, the linkage assembly comprises a mounting seat and a rotating shaft, the mounting seat is installed on the connecting seat, the rotating shaft is rotatably installed on the mounting seat around the axis of the rotating shaft, the rotating shaft is parallel to the first needle body, the first end of the rotating shaft is provided with a third gear meshed with the first gear, and the second end of the rotating shaft is provided with a fourth gear meshed with the second gear.

3. The button-type cell winding head of claim 2, wherein:

button-type electricity core winding head still includes interior pin-out unit, interior pin-out unit is located the end of body, just interior pin-out unit is located unloading station department, interior pin-out unit includes:

a first fixed seat;

the first driving mechanism is arranged on the first fixed seat;

the first pusher dog subassembly, the execution end of first pusher dog subassembly with blanking station department's first needle body detachable is connected, first actuating mechanism drives the execution end of first pusher dog subassembly along the axial displacement of first needle body.

4. The button-type cell winding head of claim 3, wherein:

the first fixed seat is provided with a first guide rail;

the first finger assembly includes:

the first sliding seat is connected with the first guide rail in a sliding manner, the first driving mechanism drives the first sliding seat to slide along the first guide rail, and a first connecting rod is arranged on the first sliding seat along the extending direction of the first guide rail;

the middle part of the second connecting rod is hinged with the first hinged seat, the first end of the second connecting rod is hinged with the first connecting rod, and the second end of the second connecting rod is provided with a first guide groove along the extending direction of the second end of the second connecting rod;

the second guide rail is arranged on the second fixing seat and parallel to the first needle body, the second sliding seat is slidably mounted on the second guide rail, the third connecting rod is mounted on the second sliding seat, a first guide piece is arranged at the first end of the third connecting rod and slidably arranged in the first guide groove, a first claw portion is arranged at the second end of the third connecting rod, and the first claw portion is detachably connected with a first pull ring of the first needle body at the blanking station.

5. The button-type cell winding head of claim 3, wherein:

button electricity core winding head still includes prevents moving back the needle unit, it is located to prevent moving back the needle unit the end of body, just prevent moving back the needle unit and locate coiling station department, it includes to prevent moving back the needle unit:

a third fixed seat;

the second driving mechanism is arranged on the third fixed seat;

and the executing tail end of the second pusher dog assembly is detachably connected with the first needle body at the winding station, and the second driving mechanism drives the executing tail end of the second pusher dog assembly to move along the axial direction of the first needle body.

6. The button-type cell winding head of claim 5, wherein:

a third guide rail is arranged on the third fixed seat;

the second finger assembly includes:

the third sliding seat is connected with the third guide rail in a sliding manner, the second driving mechanism drives the third sliding seat to slide along the third guide rail, and a fourth connecting rod is arranged on the third sliding seat along the extending direction of the third guide rail;

the middle part of the fifth connecting rod is hinged with the second hinged seat, the first end of the fifth connecting rod is hinged with the fourth connecting rod, and the second end of the fifth connecting rod is provided with a second guide groove along the extending direction of the second end of the fifth connecting rod;

the fourth guide rail is arranged on the fourth fixing seat and parallel to the first needle body, the fourth sliding seat is slidably mounted on the fourth guide rail, the sixth connecting rod is mounted on the fourth sliding seat, a second guide piece is arranged at the first end of the sixth connecting rod and slidably arranged in the second guide groove, a second claw portion is arranged at the second end of the sixth connecting rod, and the second claw portion is detachably connected with the first pull ring of the first needle body at the winding station.

7. The button-type cell winding head of claim 1, wherein:

the button type battery cell winding head further comprises a fifth fixing seat, the fifth fixing seat is arranged at the second winding needle, a fifth guide rail and a sixth guide rail are arranged on the fifth fixing seat, and the fifth guide rail and the sixth guide rail are both parallel to the second needle body;

the outward pushing needle unit is arranged at the winding station and comprises a third driving mechanism and a third pusher dog assembly, the third pusher dog assembly is slidably mounted on the fifth guide rail, the third pusher dog assembly is detachably connected with the second needle body at the winding station, and the third driving mechanism drives the third pusher dog assembly to slide along the fifth guide rail;

the outer needle drawing unit is arranged at the blanking station and comprises a fourth driving mechanism and a fourth pusher dog component, the fourth pusher dog component is slidably mounted on the sixth guide rail and detachably connected with the second needle body at the blanking station, and the fourth driving mechanism drives the fourth pusher dog component to slide along the sixth guide rail.

8. The button-type cell winding head according to any one of claims 1 to 7, characterized in that:

the button type battery cell winding head further comprises a driving unit, and the driving unit drives the first winding needle of the winding needle unit to rotate respectively.

9. The winding device comprises a pole piece inserting and cutting unit, a diaphragm cutting unit, a rubberizing unit and a button type electric core winding head, and is characterized in that:

the button-type cell winding head is the button-type cell winding head of any one of claims 1 to 8;

the pole piece inserting and cutting unit and the diaphragm cutting unit are arranged at the winding station, and the rubberizing unit is arranged at the rubberizing station of the button type battery cell winding head.

10. A button-type cell sheet winding machine, characterized by comprising the winding device of claim 9.

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