Direct drive three-finger winding head device and driving method

Abstract

The application relates to a direct-drive three-pen winding head device and a driving method, which comprises a turret installed on a machine base, the turret is rotationally connected with the machine base, three direct-drive winding pen devices are installed in the turret along the circumferences of the axial center of the turret; the direct-drive winding pen device comprises, from front to back, a winding pen mechanism, a sliding block, a spline shaft, and a spline motor, the spline motor is a through motor, the spline motor is fixedly installed on the turret, the spline motor is sleeved on the rear end of the spline shaft, the spline motor is directly connected with the spline shaft through a spline outer cylinder, the winding pen mechanism is fixedly installed on the front end of the spline shaft, the middle part of the sliding block is sleeved on the front part of the spline shaft, and the sliding block is fixedly installed on the spline shaft through a bearing seat; two pulling and inserting needle mechanisms are installed on the machine base in an interval, the device is simple in structure and reasonable in design, the winding pen is directly connected with a servo motor, the transmission structure is simple, the winding pen is fast in response speed, the transmission efficiency is high, and the device is convenient to install and maintain.

Description

TECHNICAL FIELD

[0001] The present application relates to a kind of direct drive three needle winding head device and driving method. BACKGROUND

[0002] In the manufacturing process of lithium battery cell, the winding head of the winding equipment commonly used for winding is generally applied, and the winding equipment mostly adopts single needle winding mechanism, double needle winding mechanism or three needle winding mechanism.The multi-stage transmission mechanism of the existing winding head of the existing winding equipment is complex, the transmission precision is low, the response speed is slow, and the installation and maintenance are difficult. SUMMARY

[0003] The present application aims at the above deficiencies, and provides a kind of direct drive three needle winding head device and driving method.

[0004] The scheme adopted by the present application to solve the technical problem is a kind of direct drive three needle winding head device, including the turret installed on the machine base, the turret is rotatably connected with the machine base, and three direct drive needle devices are installed in the turret along the circumferential direction of the axis;

[0005] The direct drive needle device includes needle mechanism, sliding block, spline shaft and spline motor arranged in sequence from front to back, the spline motor is a through motor, the spline motor is fixedly installed on the turret, the spline motor is sleeved on the rear end of the spline shaft, the spline motor is directly connected with the spline shaft through the spline outer cylinder, the needle mechanism is fixedly installed on the front end of the spline shaft, the sliding block is sleeved on the front part of the spline shaft, and the sliding block is fixedly installed on the spline shaft through the bearing seat;

[0006] Two pull-out needle mechanisms are installed on the machine base with a certain interval, the pull-out needle mechanism includes linear slide table arranged in axial direction, and mounting seat installed on the moving end of the linear slide table, sliding seat and pull-out needle cylinder are sequentially arranged on the mounting seat from inside to outside along radial direction, the sliding seat is slidably connected with the mounting seat through radial guide rail, the outer end of the sliding seat is connected with the end of the cylinder rod of the pull-out needle cylinder, and the inner end of the sliding seat is provided with a lever capable of driving the sliding block.

[0007] Further, an annular gear coaxial with the turret is installed on the rear end of the turret, a turret motor is installed on the machine base, and a driving gear meshing with the annular gear is installed on the output shaft of the turret motor.

[0008] Further, linear bearings are installed on both ends of the sliding block along axial direction, guide shafts are arranged in the linear bearings, and the guide shafts are fixedly installed in the turret.

[0009] Further, the winding needle mechanism comprises a winding needle base, a winding needle assembly, a winding needle tail base, the winding needle assembly is respectively inserted into the winding needle base and the winding needle tail base, the winding needle assembly comprises a first outer winding needle and a second outer winding needle, the first outer winding needle and the second outer winding needle are placed at 180° on the same circumference, the first outer winding needle is internally provided with a first inner pressing needle, the second outer winding needle is internally provided with a second inner pressing needle, the winding needle tail base comprises a fixed base, the fixed base is fixedly connected with the front end of the spline shaft, the fixed base is internally provided with a slidable sliding block, the first outer winding needle and the second inner pressing needle are both fixed to the fixed base, the first inner pressing needle and the second outer winding needle are both fixed to the sliding block, the fixed base is internally provided with a driving piece capable of sliding the sliding block.

[0010] Further, the driving piece is a thimble, the thimble is slidably installed inside the fixed base, the sliding block is provided with a roller in contact with the thimble, the fixed base is further provided with at least one spring capable of resetting the sliding block after the thimble and the roller are separated, the forward and backward movement of the thimble can drive the first inner pressing needle and the second outer winding needle to move close to or away from the first outer winding needle and the second inner pressing needle to clamp or release the substrate passing between the first inner pressing needle and the second outer winding needle.

[0011] Further, a conical surface is arranged on the front end of the thimble to cooperate with the roller.

[0012] Further, a push rod is arranged in the spline shaft in the axial direction, the thimble is fixedly installed at the front end of the push rod, a needle misalignment mechanism is arranged at the rear side of the push rod to drive the push rod to clamp or release the substrate, the needle misalignment mechanism comprises a support fixedly installed at the rear end of the spline motor, a rotary clamping cylinder installed on the support, a swing arm installed at the end of the cylinder rod of the rotary clamping cylinder, a thimble installed at the end of the swing arm to push the push rod, the thimble is located at the rear side of the push rod, a reset spring is sleeved at the rear end of the push rod, the front and rear ends of the reset spring are respectively abutted against the spline shaft and the push rod.

[0013] Further, a front support mechanism is installed on the front side of the turret of the machine base, the front support mechanism comprises a rotating frame, the rotating frame is fixedly connected with the turret through a connecting shaft, the rotating frame, the connecting shaft and the turret are coaxial, three support assemblies are uniformly distributed on the rotating frame, the support assemblies are one-to-one correspondingly arranged with the direct-drive winding needle device, the support assembly comprises a front cylinder, a pull rod and a support block connected in sequence from front to back, the pull rod is sleeved on the rotating frame and is in sliding cooperation with the rotating frame, the support block can be sleeved at the front end of the winding needle mechanism to support the winding needle mechanism.

[0014] Further, an adjustable height support foot is installed at the lower end of the machine base.

[0015] A driving method of a three-winding needle winding head, comprising the following steps:

[0016] Step one: the rotary clamping cylinder of the needle misalignment mechanism drives the thimble to push the push rod, the forward movement of the thimble at the front end of the push rod causes the winding needle mechanism to open;

[0017] Step two: the linear slide drive mounting seat of the upper pull and insert needle mechanism moves, the pull and insert needle cylinder drives the push rod to extend, the push rod pushes the sliding block of the direct drive needle winding device that moves to the position, and the needle winding mechanism moves forward along the spline shaft to insert the needle;

[0018] Step three: the rotating clamping cylinder of the staggered needle mechanism drives the needle to move back to reset, the push rod moves back to reset under the action of the reset spring, the needle at the front end of the push rod moves back to make the needle winding mechanism close and clamp the base material;

[0019] Step four: the spline motor drives the needle winding mechanism to rotate through the spline shaft to wind the base material;

[0020] Step five: after winding is completed, the rotating clamping cylinder of the staggered needle mechanism drives the needle to push the push rod, and the needle at the front end of the push rod moves forward to make the needle winding mechanism open;

[0021] Step six: the linear slide drive mounting seat of the lower pull and insert needle mechanism moves, the pull and insert needle cylinder drives the push rod to extend, the push rod pushes the sliding block of the direct drive needle winding device that moves to the position, and the needle winding mechanism moves backward along the spline shaft to pull the needle, and the base material wound on the needle winding mechanism is unloaded by the unloading mechanism of the winding machine at the same time.

[0022] Compared with the prior art, the present application has the following beneficial effects: simple structure, reasonable design, direct connection of the needle winding mechanism and the servo motor, simple transmission structure, fast response speed of the needle winding mechanism, high transmission efficiency, and convenient installation and maintenance. BRIEF DESCRIPTION OF DRAWINGS

[0023] The present application will be further described below in combination with the drawings.

[0024] Figure 1 is a structure diagram of the device Figure 1 .

[0025] Figure 2 is a structure diagram of the device Figure 2 .

[0026] Figure 3 is a structure diagram of the direct drive needle winding device.

[0027] Figure 4 is a structure sectional view of the direct drive needle winding device.

[0028] Figure 5 is a structure diagram of the needle winding mechanism.

[0029] In the diagram: 1-Base; 2-Turret; 201-Ring gear; 202-Turret motor; 203-Drive gear; 3-Direct drive needle winding device; 301-Needle winding mechanism; 302-Splined shaft; 303-Splined motor; 304-Sliding block; 305-Linear bearing; 306-Guide shaft; 307-Push rod; 308-Splined outer cylinder; 309-Ejector pin; 310-Fixed base; 311-Return spring; 312-First outer needle winding; 313-First inner pressure needle; 314-Second inner... 315-Second outer coil needle; 316-Sliding block; 317-Spring; 318-Roller; 4-Pin removal / insertion mechanism; 401-Linear slide; 402-Mounting base; 403-Pin removal / insertion cylinder; 404-Sliding seat; 405-Turn lever; 5-Needle shifting mechanism; 501-Rotary clamping cylinder; 502-Swing arm; 503-Ejector pin; 6-Front support mechanism; 601-Rotating frame; 602-Connecting shaft; 603-Front cylinder; 604-Pull rod; 605-Support block; 7-Support foot. Detailed Implementation

[0030] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0031] like Figures 1-5 As shown, a direct-drive three-coil needle winding head device includes a turret 2 mounted on a base 1. The turret is rotatably connected to the base. Three direct-drive needle winding devices 3 are evenly distributed around the circumference of the turret's axis. The three direct-drive needle winding devices perform cyclic actions of winding the battery cell, applying adhesive to the battery cell, and unloading and removing the needle, respectively.

[0032] The direct-drive needle winding device includes a needle winding mechanism 301, a sliding block 304, a spline shaft 302, and a spline motor 303 arranged sequentially from front to back. The spline motor is a through-type motor, which is fixedly mounted on the turret and fitted onto the rear end of the spline shaft. The spline motor is directly connected to the spline shaft via a spline outer cylinder 308. The needle winding mechanism is fixedly mounted on the front end of the spline shaft. The middle part of the sliding block is fitted onto the front part of the spline shaft and fixedly mounted on the spline shaft via a bearing seat. This structure realizes direct connection between the needle winding and the spline motor, solving the problems of complex multi-stage transmission mechanisms, low transmission accuracy, slow response speed, and high installation and maintenance difficulty of existing winding machine winding heads.

[0033] The spline motor is wired via conductive slip rings;

[0034] Two needle pulling and inserting mechanisms 4 are installed on the upper and lower parts of the base, the needle pulling and inserting mechanism comprises a linear slide 401 arranged in the axial direction, a mounting seat 402 installed on the moving end of the linear slide, a sliding seat 404 and a needle pulling and inserting cylinder 403 arranged in the radial direction from inside to outside on the mounting seat, the sliding seat is in sliding fit with the mounting seat through the radial guide rail, the outer end of the sliding seat is connected with the end of the cylinder rod of the needle pulling and inserting cylinder, and a driving rod 405 capable of driving the sliding block is installed on the inner end of the sliding seat; the upper needle pulling and inserting mechanism is used for pushing the needle rolling mechanism of the direct drive type needle rolling device moving to this position to move forward to insert the needle; and the lower needle pulling and inserting mechanism is used for pushing the needle rolling mechanism of the direct drive type needle rolling device moving to this position to move backward to pull the needle.

[0035] In the embodiment, the rear end of the turret is installed with a ring gear 201 coaxial with the turret, a turret motor 202 is installed on the base, and a driving gear 203 engaged with the ring gear for transmission is installed on the output shaft of the turret motor.

[0036] In the embodiment, linear bearings 305 are installed on the two ends of the sliding block in the axial direction, guide shafts 306 are arranged in the linear bearings, and the guide shafts are fixedly installed in the turret.

[0037] In the embodiment, the needle rolling mechanism comprises a needle rolling seat, a needle assembly and a needle tail seat, the needle assembly is inserted into the needle rolling seat and the needle tail seat respectively, the needle assembly comprises a first outer needle 312 and a second outer needle 315, the first outer needle and the second outer needle are arranged at 180° on the same circumference, the first outer needle is provided with a first inner pressing needle 313, and the second outer needle is provided with a second inner pressing needle 314, the needle tail seat comprises a fixed seat 310 fixedly connected with the front end of the spline shaft, the fixed seat is provided with a sliding block 316 capable of sliding, the first outer needle and the second inner pressing needle are fixed to the fixed seat, the first inner pressing needle and the second outer needle are fixed to the sliding block, and the fixed seat is provided with a driving member capable of controlling the sliding of the sliding block.

[0038] In the embodiment, the driving member is a thimble 309, the thimble is slidingly installed in the fixed seat, the sliding block is provided with a roller 318 in contact with the thimble, the fixed seat is further provided with at least one spring for resetting the sliding block after the thimble and the roller are separated, and the forward and backward movement of the thimble can drive the first inner pressing needle and the second outer needle to move close to or away from the first outer needle and the second inner pressing needle to clamp or release the substrate passing between the first inner pressing needle and the second outer needle.

[0039] In the embodiment, a conical surface matched with the roller is arranged on the front end of the thimble.

[0040] In the embodiment, the spline shaft is axially provided with a push rod 307, the ejector pin is fixedly installed at the front end of the push rod, and the ejector pin mechanism 5 for driving the push rod to clamp or loosen the base material is arranged at the rear side of the push rod. The ejector pin mechanism comprises a bracket fixedly installed at the rear end of the spline motor, a rotary clamping cylinder 501 installed on the bracket, a swing arm 502 installed at the end of the cylinder rod of the rotary clamping cylinder, and an ejector pin 503 installed at the end of the swing arm for pushing the push rod. The ejector pin is located at the rear side of the push rod, and the reset spring 311 is sleeved at the rear end of the push rod. The front and rear ends of the reset spring abut against the spline shaft and the push rod, respectively.

[0041] In the embodiment, the front support mechanism 6 is installed at the front side of the turret on the machine base. The front support mechanism comprises a rotating frame 601 fixedly connected with the turret through a connecting shaft 602. The rotating frame, the connecting shaft and the turret have the same coaxial center. Three support assemblies are circumferentially and uniformly arranged on the rotating frame. The support assemblies are arranged in one-to-one correspondence with the direct-drive winding needle devices. The support assembly comprises a front cylinder 603, a pull rod 604 and a support block 605 connected in sequence from front to rear. The pull rod is sleeved on the rotating frame and is in sliding fit with the rotating frame. The support block can be sleeved at the front end of the winding needle mechanism to support the winding needle mechanism.

[0042] In the embodiment, the adjustable height support feet 7 are installed at the lower end of the machine base, so that the device has the height fine adjustment function, and the installation precision of the winding head can be conveniently adjusted. The adjustable height support feet adopt the existing known adjustable height support feet.

[0043] A driving method of a three-winding needle winding head, comprising the following steps:

[0044] Step one: the rotary clamping cylinder of the ejector pin mechanism drives the ejector pin to push the push rod, and the ejector pin at the front end of the push rod moves forward to open the winding needle mechanism;

[0045] Step two: the linear slide table of the ejector and insertion needle mechanism drives the mounting seat to move, the ejector and insertion needle cylinder drives the ejector rod to extend, the ejector rod pushes the sliding block of the direct-drive winding needle device moved to the position, and the winding needle mechanism moves forward along the spline shaft to insert the needle;

[0046] Step three: the rotary clamping cylinder of the ejector pin mechanism drives the ejector pin to move backward to reset, the push rod moves backward to reset under the action of the reset spring, and the ejector pin at the front end of the push rod moves backward to close the winding needle mechanism to clamp the base material;

[0047] Step four: the spline motor drives the winding needle mechanism to rotate through the spline shaft to wind the base material;

[0048] Step five: after the winding is completed, the rotary clamping cylinder of the ejector pin mechanism drives the ejector pin to push the push rod, and the ejector pin at the front end of the push rod moves forward to open the winding needle mechanism;

[0049] Step six: the linear slide drive mounting seat of the lower side plug and pull pin mechanism moves, the plug and pull pin cylinder drives the push rod to extend, the push rod pushes the sliding block of the direct drive needle winding device that moves to the position, and the needle winding mechanism moves backward along the spline shaft to pull the needle. While the needle winding mechanism moves backward, the substrate wound on it is unloaded by the unloading mechanism of the winding machine.

[0050] If the patent discloses or involves parts or structural members fixedly connected to each other, unless otherwise stated, the fixed connection can be understood as: detachable fixed connection (such as bolt or screw connection), and can also be understood as: non-detachable fixed connection (such as riveting, welding), of course, the mutual fixed connection can also be replaced by an integral structure (such as using casting process to make it integrally formed) (except for obvious cases that cannot use integral forming process).

[0051] In the description of the patent, it should be understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the patent, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation of the patent.

[0052] The above preferred embodiments further illustrate the purpose, technical solutions and advantages of the present application. It should be understood that the above description is only the preferred embodiment of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A direct drive three-finger winding head apparatus, characterized by: The application relates to a winding and unwinding device, which comprises a turret installed on a base, the turret being rotationally connected with the base, and three direct-drive winding needle devices being installed on the turret along the circumferences of the axial center of the turret; The direct-drive winding needle device comprises, from front to back, a winding needle mechanism, a sliding block, a spline shaft, and a spline motor, the spline motor being a through motor, the spline motor being fixedly installed on the turret, the spline motor being sleeved on the rear end of the spline shaft, the spline motor being directly connected with the spline shaft through a spline outer cylinder, the winding needle mechanism being fixedly installed on the front end of the spline shaft, the middle part of the sliding block being sleeved on the front part of the spline shaft, and the sliding block being fixedly installed on the spline shaft through a bearing seat; Two pulling and inserting needle mechanisms are installed on the base in a spaced manner, the pulling and inserting needle mechanism comprises a linear sliding table arranged in an axial direction and a mounting seat installed on the moving end of the linear sliding table, the mounting seat is sequentially provided with a sliding seat and a pulling and inserting needle cylinder in a radial direction from inside to outside, the sliding seat is slidably connected with the mounting seat through a radial guide rail, the outer end of the sliding seat is connected with the tail end of the cylinder rod of the pulling and inserting needle cylinder, and a driving rod capable of driving the sliding block is installed on the inner end of the sliding seat; linear bearings are arranged on the two ends of the sliding block in an axial direction, guide shafts are arranged in the linear bearings, and the guide shafts are fixedly installed in the turret; the winding needle mechanism comprises a winding needle seat, a winding needle assembly, and a winding needle tail seat, the winding needle assembly is inserted into the winding needle seat and the winding needle tail seat, the winding needle assembly comprises a first outer winding needle and a second outer winding needle, the first outer winding needle and the second outer winding needle are arranged at 180 degrees on the same circumference, a first inner pressing needle is arranged in the first outer winding needle, a second inner pressing needle is arranged in the second outer winding needle, the winding needle tail seat comprises a fixed seat, the fixed seat is fixedly connected with the front end of the spline shaft, a sliding block capable of sliding is arranged in the fixed seat, the first outer winding needle and the second inner pressing needle are fixed to the fixed seat, the first inner pressing needle and the second outer winding needle are fixed to the sliding block, and a driving element capable of driving the sliding block to slide is arranged in the fixed seat; the driving element is a thimble, the thimble is slidably installed in the fixed seat, a roller in contact with the thimble is arranged on the sliding block, at least one spring for resetting the sliding block after the thimble and the roller are separated is arranged in the fixed seat, and the thimble is moved forward and backward to drive the first inner pressing needle and the second outer winding needle to move close to or away from the first outer winding needle and the second inner pressing needle, so as to clamp or release the substrate passing through the first inner pressing needle and the second outer winding needle; a push rod is arranged in the spline shaft in an axial direction, the thimble is fixedly installed on the front end of the push rod, a needle arrangement mechanism for driving the push rod to clamp or release the substrate is arranged on the rear side of the push rod, the needle arrangement mechanism comprises a support fixedly installed on the rear end of the spline motor, a rotary clamping cylinder installed on the support, a swing arm installed on the tail end of the cylinder rod of the rotary clamping cylinder, and a thimble installed on the tail end of the swing arm for pushing the push rod, the thimble is located on the rear side of the push rod, a reset spring is sleeved on the rear end of the push rod, and the two ends of the reset spring are respectively abutted against the spline shaft and the push rod.

2. A direct drive three-finger winding head apparatus according to claim 1, characterised in that: An annular gear coaxial with the turret is installed on the rear end of the turret, a turret motor is installed on the base, and a driving gear meshing with the annular gear is installed on the output shaft of the turret motor.

3. The direct drive three-capstan winder apparatus of claim 1, wherein: A conical surface matched with the roller is arranged on the front end of the thimble.

4. The direct drive three-capstan winder apparatus of claim 1, wherein: The front support mechanism is installed on the front side of the turret of the machine base, and the front support mechanism comprises a rotating frame, the rotating frame is fixedly connected with the turret through a connecting shaft, the rotating frame, the connecting shaft and the turret are coaxial, three support assemblies are circumferentially and evenly distributed on the rotating frame, the support assemblies are one-to-one corresponding to the direct-drive needle winding devices, the support assembly comprises a front cylinder, a pull rod and a support block which are connected in sequence from front to back, the pull rod is sleeved on the rotating frame and is in sliding fit with the rotating frame, the support block can be sleeved on the front end of the needle winding mechanism to support the needle winding mechanism.

5. The direct drive three-capstan winder apparatus of claim 1, wherein: The adjustable height support feet are installed at the lower end of the machine base.

6. A driving method of a three-finger winding head, using the direct drive type three-finger winding head device according to claim 1, characterized by, The method comprises the following steps: Step one: the rotating clamping cylinder of the staggered needle mechanism drives the push rod, the forward movement of the push rod end needle opens the needle winding mechanism; Step two: the linear slide table of the upper pull-out and insertion needle mechanism drives the mounting seat to move, the pull-out and insertion needle cylinder drives the push rod to extend, the push rod pushes the sliding block of the direct-drive needle winding device in this position, and the needle winding mechanism moves forward along the spline shaft to insert the needle; Step three: the rotating clamping cylinder of the staggered needle mechanism drives the needle to move backward to reset, the push rod moves backward to reset under the action of the reset spring, the forward movement of the push rod end needle opens the needle winding mechanism to clamp the base material; Step four: the spline motor drives the needle winding mechanism to rotate through the spline shaft to wind the base material; Step five: after winding is completed, the rotating clamping cylinder of the staggered needle mechanism drives the push rod, the forward movement of the push rod end needle opens the needle winding mechanism; Step six: the linear slide table of the lower pull-out and insertion needle mechanism drives the mounting seat to move, the pull-out and insertion needle cylinder drives the push rod to extend, the push rod pushes the sliding block of the direct-drive needle winding device in this position, and the needle winding mechanism moves backward along the spline shaft to pull out the needle, and the base material wound on the needle winding mechanism is unloaded by the unloading mechanism of the winding machine.

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