Needle staggering mechanism and winding machine

Abstract

The embodiments of the present invention provide a staggered needle mechanism and a winding machine, which relate to the technical field of battery cell production. The winding machine includes a staggered needle mechanism. The staggered needle mechanism includes a mounting seat, a cylinder mounting plate, a rotating cylinder, a cam follower mounting plate and a cam follower, the mounting seat is provided with a first connecting hole, the cylinder mounting plate is provided with a second connecting hole, the first connecting hole and the second connecting hole are connected by bolts, the cylinder body of the rotating cylinder is mounted on the cylinder mounting plate, the speed of the rotating shaft of the rotating cylinder is adjustable, the cam follower mounting plate is mounted on the rotating shaft of the rotating cylinder, the cam follower is mounted on the cam follower mounting plate, and the cam follower is used to press down the staggered needle disk. The staggered needle mechanism and the winding machine can adjust the downward pressure of the cam follower according to production requirements to avoid excessive downward pressure, thereby avoiding collision and damage between components.

Description

Technical Field

[0001] The present invention relates to the technical field of battery core production, and in particular to a staggered needle mechanism and a winding machine. Background Art

[0002] In the production process of power lithium batteries, the needle error mechanism on the winder is an important part of battery winding. The success or failure of the needle error before cell winding directly determines whether the cell winding work can continue. Therefore, successfully driving the needle error is an important part of the continuous operation of the winder and ensuring the quality of the battery cell.

[0003] At present, in the process of winding the battery cell, the staggered needle mechanism is used to stagger the needle before winding the winding needle. The cam follower of the staggered needle mechanism presses down the staggered needle disk of the winding needle mechanism to achieve staggered needle winding; after the staggered needle is completed, the normal winding of the battery cell begins. The existing staggered needle mechanism uses a straight cylinder to drive the cam follower to press down the staggered needle disk of the winding needle mechanism. However, the downward pressure of the cam follower is generally large, and the downward pressure of the cam follower is not adjustable. When the cam follower is pressed down, the staggered needle disk of the winding needle mechanism and the staggered needle sleeve base will impact, causing damage to the cylinder, which brings great pressure to production and equipment maintenance, thereby affecting the efficiency of core winding and the production rhythm of the equipment.

[0004] Therefore, designing a needle staggering mechanism that can adjust the downward pressure of the cam follower according to production requirements to avoid excessive downward pressure and thus avoid collision and damage between components is a technical problem that urgently needs to be solved. Summary of the invention

[0005] The purpose of the present invention includes providing a needle staggering mechanism and a winding machine, which can adjust the downward pressure of the cam follower according to production requirements to avoid excessive downward pressure, thereby avoiding collision and damage between components.

[0006] The embodiments of the present invention can be implemented as follows:

[0007] In a first aspect, an embodiment of the present invention provides a needle staggering mechanism, the needle staggering mechanism comprising:

[0008] The mounting seat is provided with a first connecting hole;

[0009] The cylinder mounting plate is provided with a second connecting hole, and the first connecting hole and the second connecting hole are connected by bolts;

[0010] A rotary cylinder, the cylinder body of which is mounted on a cylinder mounting plate, and the speed of the rotary shaft of the rotary cylinder is adjustable;

[0011] A cam follower mounting plate mounted on the rotating shaft of the rotary cylinder;

[0012] The cam follower is mounted on the cam follower mounting plate, and the cam follower is used to press down the wrong needle plate.

[0013] In an optional embodiment, the cam follower mounting plate comprises:

[0014] The first mounting portion is provided with a mounting hole, and the mounting hole is matched with the rotating shaft of the rotating cylinder;

[0015] A bent portion, one end of which is connected to the end of the first mounting portion;

[0016] A second mounting portion, one end of the second mounting portion is connected to the other end of the curved portion, and the other end of the second mounting portion is used for mounting a cam follower.

[0017] In an optional embodiment, the bending angle of the bending portion is 90°, the length direction of the first mounting portion is perpendicular to the length direction of the rotating axis of the rotating cylinder, and the length direction of the second mounting portion is perpendicular to the length direction of the rotating axis of the rotating cylinder.

[0018] In an optional embodiment, the curved portion extends along the surface of the rotating cylinder, one end of the curved portion is close to one end of the rotating cylinder, and the other end of the curved portion is close to the other end of the rotating cylinder.

[0019] In an optional embodiment, at least one of the first connecting hole and the second connecting hole is a waist-shaped hole, and the length direction of the waist-shaped hole is parallel to the length direction of the rotating cylinder.

[0020] In an optional embodiment, the mounting base is L-shaped, and the mounting base includes:

[0021] First slab;

[0022] The second plate is vertically connected to one end of the first plate, and the first connecting hole is arranged on the second plate.

[0023] In an optional embodiment, a slide groove is provided on the second flat plate, the first connecting hole is provided at the bottom of the slide groove, the length direction of the slide groove is parallel to the length direction of the rotating cylinder, and the cylinder mounting plate is slidably connected in the slide groove.

[0024] In an optional embodiment, the cylinder mounting plate is L-shaped, and the cylinder mounting plate includes:

[0025] A third plate, wherein the second connecting hole is provided on the third plate, the second connecting hole is a waist-shaped hole, and the length direction of the waist-shaped hole is parallel to the length direction of the slide groove;

[0026] The fourth plate is vertically connected to one end of the third plate, and the fourth plate is connected to the cylinder body of the rotating cylinder.

[0027] In a second aspect, an embodiment of the present invention provides a winding machine, the winding machine comprising the staggered needle mechanism of any one of the aforementioned embodiments.

[0028] In an optional embodiment, the winding machine further comprises:

[0029] Turntable;

[0030] The staggered needle disc is installed on the turntable;

[0031] Among them, the needle error mechanism is installed on one side of the turntable, and the needle error mechanism is used to press down the needle error disk.

[0032] The beneficial effects of the staggered needle mechanism and winding machine provided by the embodiments of the present invention include:

[0033] A rotary cylinder is used to drive the cam follower mounting plate and the cam follower to rotate forward first, so as to realize the downward pressing action of the cam follower on the staggered needle disk, and then rotate reversely to retract the cam follower to avoid interference between the battery cell and the staggered needle mechanism and complete the staggered needle driving stroke. In addition, by adjusting the air circuit pressure and flow of the rotary cylinder, the rotation speed of the rotating shaft of the rotary cylinder can be adjusted, and the downward pressure of the cam follower can be indirectly controlled. In this way, the staggered needle mechanism and the winding machine can adjust the downward pressure of the cam follower according to production needs to avoid excessive downward pressure, thereby avoiding collision and damage between components. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0035] Figure 1 A schematic structural diagram of a needle staggering mechanism provided by a first embodiment of the present invention from a first viewing angle;

[0036] Figure 2 A schematic structural diagram of the needle staggering mechanism provided by the first embodiment of the present invention from a second viewing angle;

[0037] Figure 3 is a schematic diagram of the structure of the mounting base;

[0038] Figure 4 It is a structural schematic diagram of the cylinder mounting plate;

[0039] Figure 5 It is a structural schematic diagram of the cam follower mounting plate from a first perspective;

[0040] Figure 6 A structural schematic diagram of a cam follower mounting plate from a second perspective;

[0041] Figure 7A schematic structural diagram of a first working state of a winding machine provided by a second embodiment of the present invention;

[0042] Figure 8 A schematic structural diagram of a second working state of a winding machine provided by a second embodiment of the present invention.

[0043] Icons: 100-needle shifting mechanism; 110-mounting seat; 111-first plate; 112-second plate; 113-slide groove; 114-first connecting hole; 120-cylinder mounting plate; 121-third plate; 122-second connecting hole; 123-fourth plate; 130-rotating cylinder; 140-cam follower mounting plate; 141-first mounting part; 142-mounting hole; 143-bending part; 144-second mounting part; 150-cam follower; 200-winding machine; 210-turntable; 220-needle shifting disk. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0045] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0047] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear to indicate an orientation or position relationship, they are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the product of the invention is usually placed when used. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0048] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0049] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

[0050] First embodiment

[0051] Please refer to Figure 1 and Figure 2 The present embodiment provides a needle staggering mechanism 100, which includes a mounting seat 110, a cylinder mounting plate 120, a rotary cylinder 130, a cam follower mounting plate 140, and a cam follower 150. One end of the cylinder mounting plate 120 is connected to the mounting seat 110, the cylinder body of the rotary cylinder 130 is mounted on the cylinder mounting plate 120, the cam follower mounting plate 140 is mounted on the rotating shaft of the rotary cylinder 130, and the cam follower 150 is mounted on the cam follower mounting plate 140. The cam follower 150 is used to press down the needle staggering disk 220.

[0052] The rotary cylinder 130 is used to drive the cam follower mounting plate 140 and the cam follower 150 to rotate forward first, so as to realize the downward pressing action of the cam follower 150 on the staggered needle disk 220, and then rotate reversely to retract the cam follower 150, so as to avoid interference between the battery cell and the staggered needle mechanism 100, and complete the staggered needle driving stroke. In addition, by adjusting the air circuit pressure and flow of the rotary cylinder 130, the rotation speed of the rotating shaft of the rotary cylinder 130 can be adjusted, and the downward pressure of the cam follower 150 can be indirectly controlled. In this way, the staggered needle mechanism 100 and the winding machine 200 can adjust the downward pressure of the cam follower 150 according to production requirements, so as to avoid excessive downward pressure, thereby avoiding collision and damage between components, and ensuring the reliability of the staggered needle.

[0053] For details, please refer to Figure 3 The mounting base 110 is L-shaped, and the mounting base 110 includes a first plate 111 and a second plate 112, wherein the second plate 112 is vertically connected to one end of the first plate 111, and a slide groove 113 is provided on the second plate 112. The first connecting hole 114 is provided at the bottom of the slide groove 113. The length direction of the slide groove 113 is parallel to the length direction of the rotating cylinder 130, and the cylinder mounting plate 120 is slidably connected in the slide groove 113.

[0054] See also Figure 4 The cylinder mounting plate 120 includes a third plate 121 and a fourth plate 123, wherein the second connecting hole 122 is provided on the third plate 121, the second connecting hole 122 is a waist-shaped hole, the length direction of the waist-shaped hole is parallel to the length direction of the slide slot 113, and the first connecting hole 114 is connected to the second connecting hole 122 by bolts. The fourth plate 123 is vertically connected to one end of the third plate 121, and the fourth plate 123 is connected to the cylinder body of the rotating cylinder 130.

[0055] Here, the second connection hole 122 is designed as a waist-shaped hole, so that the position of the cylinder mounting plate 120 connected to the mounting seat 110 can be adjusted along the length direction of the waist-shaped hole, so that the position of the cam follower 150 relative to the mounting seat 110 can be adjusted, which can ensure that the cam follower 150 is more accurately pressed against the needle plate 220. At the same time, the cylinder mounting plate 120 can be slidably connected in the slide groove 113 of the mounting seat 110, which can improve the stability and accuracy of the position adjustment of the cylinder mounting plate 120 relative to the mounting seat 110.

[0056] In this embodiment, the second connecting hole 122 is designed as a waist-shaped hole. In other embodiments, the first connecting hole 114 can also be designed as a waist-shaped hole, which can also achieve adjustable relative positions of the mounting seat 110 and the cylinder mounting plate 120.

[0057] See also Figure 5 and Figure 6 The cam follower mounting plate 140 includes a first mounting portion 141, a bent portion 143 and a second mounting portion 144, wherein the first mounting portion 141 is provided with a mounting hole 142, the mounting hole 142 cooperates with the rotating shaft of the rotating cylinder 130, one end of the bent portion 143 is connected to the end of the first mounting portion 141, one end of the second mounting portion 144 is connected to the other end of the bent portion 143, and the other end of the second mounting portion 144 is used to mount the cam follower 150.

[0058] Specifically, the curved portion 143 extends along the surface of the rotating cylinder 130, one end of the curved portion 143 is close to one end of the rotating cylinder 130, and the other end of the curved portion 143 is close to the other end of the rotating cylinder 130. In this way, the center of gravity of the curved portion 143 can be as close as possible to the center of gravity of the rotating cylinder 130, or in other words, the center of gravity of the staggered needle mechanism 100 is closer to the center of gravity of the rotating cylinder 130. In this way, the torque received by the mounting seat 110 is small during the process of the rotating cylinder 130 driving the cam follower mounting plate 140 to rotate, the reaction force received by the rotating cylinder 130, and the vibration of the overall structure is small, which is conducive to more accurate pressing position of the cam follower 150, and also makes the structure of the staggered needle mechanism 100 compact and reduces the size of the occupied space.

[0059] In this embodiment, the bending angle of the bending portion 143 is 90°, the length direction of the first mounting portion 141 is perpendicular to the length direction of the rotating axis of the rotating cylinder 130 , and the length direction of the second mounting portion 144 is perpendicular to the length direction of the rotating axis of the rotating cylinder 130 .

[0060] In this way, the cam follower mounting plate 140 is shorter in length than the extending length of the rotating cylinder 130, the pressing position of the cam follower 150 is closer to the center of the rotating cylinder 130, the torque applied to the rotating cylinder 130 is smaller, and the rotating cylinder 130 is not easily damaged by excessive force, thereby extending the service life of the rotating cylinder 130.

[0061] The beneficial effects of the needle staggering mechanism 100 provided in this embodiment include:

[0062] 1. By adjusting the air circuit pressure and flow of the rotary cylinder 130, the rotation speed of the rotary shaft of the rotary cylinder 130 can be adjusted, and the downward pressure of the cam follower 150 can be indirectly controlled. In this way, the needle-shifting mechanism 100 and the winding machine 200 can adjust the downward pressure of the cam follower 150 according to production requirements to avoid excessive downward pressure, thereby avoiding collision and damage between components, and ensuring the reliability of needle-shifting;

[0063] 2. The cam follower mounting plate 140 is shorter than the length extending outward from the rotary cylinder 130, and the pressing position of the cam follower 150 is closer to the center of the rotary cylinder 130. The torque on the rotary cylinder 130 is smaller, and the rotary cylinder 130 is not easily damaged by excessive force, thereby extending the service life of the rotary cylinder 130;

[0064] 3. The reverse rotation of the rotary cylinder 130 drives the cam follower 150 to disengage from the staggered needle plate 220, thereby avoiding interference between the battery cell and the staggered needle mechanism 100. Moreover, when the size of the staggered needle plate 220 remains unchanged, the winding machine 200 can also be adapted to process battery cells of larger sizes.

[0065] 4. The second connecting hole 122 is a waist-shaped hole, so that the position of the cylinder mounting plate 120 connected to the mounting seat 110 can be adjusted along the length direction of the waist-shaped hole, so that the pressing position of the cam follower 150 can be adjusted.

[0066] Second embodiment

[0067] See also Figure 7 and Figure 8 The present embodiment provides a winding machine 200, which includes a rotating disk 210, a needle shifting disk 220, and the needle shifting mechanism 100 provided in the first embodiment. The needle shifting disk 220 is arranged on the rotating disk 210, and the needle shifting mechanism 100 is installed on one side of the rotating disk 210, and the needle shifting mechanism 100 is used to press the needle shifting disk 220 downward.

[0068] The state of the needle disc 220 pressed down by the needle disc mechanism 100 is shown in FIG. Figure 7 The rotary cylinder 130 drives the cam follower mounting plate 140 to rotate forward, and the cam follower mounting plate 140 drives the cam follower 150 to press down the staggered needle plate 220 on the rotating disk 210.

[0069] The state of the needle-shifting mechanism 100 being separated from the needle-shifting disk 220 is shown in FIG. Figure 8 Before the needle winding machine changes position, the rotary cylinder 130 drives the cam follower mounting plate 140 to rotate in the opposite direction, and the cam follower mounting plate 140 drives the cam follower 150 to disengage from the staggered needle plate 220 on the turntable 210, thus successfully avoiding the position change for the needle winding machine.

[0070] In this way, within the time required by the equipment, the rotating cylinder 130 is controlled to rotate forward first and then reversely to complete the needle shifting driving stroke, and the cam follower mounting plate 140 drives the cam follower 150 to disengage from the needle shifting disk 220. This can avoid interference between the battery cell and the needle shifting mechanism 100, and when the size of the needle shifting disk 220 remains unchanged, the winding machine 200 can also be adapted to processing battery cells of larger sizes.

[0071] The beneficial effects of the winding machine 200 provided in this embodiment include:

[0072] 1. By adjusting the air circuit pressure and flow of the rotary cylinder 130, the rotation speed of the rotary shaft of the rotary cylinder 130 can be adjusted, and the downward pressure of the cam follower 150 can be indirectly controlled. In this way, the needle-shifting mechanism 100 and the winding machine 200 can adjust the downward pressure of the cam follower 150 according to production requirements to avoid excessive downward pressure, thereby avoiding collision and damage between components, and ensuring the reliability of needle-shifting;

[0073] 2. The cam follower mounting plate 140 is shorter than the length extending outward from the rotary cylinder 130, and the pressing position of the cam follower 150 is closer to the center of the rotary cylinder 130. The torque on the rotary cylinder 130 is smaller, and the rotary cylinder 130 is not easily damaged by excessive force, thereby extending the service life of the rotary cylinder 130;

[0074] 3. The reverse rotation of the rotary cylinder 130 drives the cam follower 150 to disengage from the staggered needle plate 220, thereby avoiding interference between the battery cell and the staggered needle mechanism 100. Moreover, when the size of the staggered needle plate 220 remains unchanged, the winding machine 200 can also be adapted to process battery cells of larger sizes.

[0075] 4. The second connecting hole 122 is a waist-shaped hole, so that the position of the cylinder mounting plate 120 connected to the mounting seat 110 can be adjusted along the length direction of the waist-shaped hole, so that the pressing position of the cam follower 150 can be adjusted.

[0076] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A needle staggering mechanism, characterized in that: The staggered needle mechanism comprises: A mounting seat (110) is provided with a first connection hole (114), and the mounting seat (110) is L-shaped; The cylinder mounting plate (120) is provided with a second connection hole (122), and the first connection hole (114) and the second connection hole (122) are connected by bolts; A rotary cylinder (130), wherein the cylinder body of the rotary cylinder (130) is mounted on the cylinder mounting plate (120), the rotation speed of the rotary shaft of the rotary cylinder (130) is adjustable, and at least one of the first connecting hole (114) and the second connecting hole (122) is a waist-shaped hole, and the length direction of the waist-shaped hole is parallel to the length direction of the rotary cylinder (130); A cam mounting plate (140) mounted on the rotating shaft of the rotating cylinder (130); A cam follower (150) is mounted on the cam mounting plate (140), and the cam follower (150) is used to press down the misaligned needle disc (220).

2. The needle-shifting mechanism according to claim 1, characterized in that: The cam mounting plate (140) comprises: A first mounting portion (141) is provided with a mounting hole (142), wherein the mounting hole (142) cooperates with the rotating shaft of the rotating cylinder (130); a bent portion (143), one end of the bent portion (143) being connected to an end of the first mounting portion (141); A second mounting portion (144), one end of the second mounting portion (144) being connected to the other end of the bent portion (143), and the other end of the second mounting portion (144) being used for mounting the cam follower (150).

3. The needle-shifting mechanism according to claim 2, characterized in that: The bending angle of the bending portion (143) is 90°, the length direction of the first mounting portion (141) is perpendicular to the length direction of the rotation axis of the rotating cylinder (130), and the length direction of the second mounting portion (144) is perpendicular to the length direction of the rotation axis of the rotating cylinder (130).

4. The needle dislocation mechanism according to claim 2, characterized in that: The curved portion (143) extends along the surface of the rotary cylinder (130), one end of the curved portion (143) is close to one end of the rotary cylinder (130), and the other end of the curved portion (143) is close to the other end of the rotary cylinder (130).

5. The needle dislocation mechanism according to claim 1, characterized in that: The mounting seat (110) comprises: A first plate (111); The second plate (112) is vertically connected to one end of the first plate (111), and the first connection hole (114) is provided on the second plate (112).

6. The needle dislocation mechanism according to claim 5, characterized in that: A slide groove (113) is provided on the second flat plate (112), the first connection hole (114) is provided at the bottom of the slide groove (113), the length direction of the slide groove (113) is parallel to the length direction of the rotary cylinder (130), and the cylinder mounting plate (120) is slidably connected in the slide groove (113).

7. The needle dislocation mechanism according to claim 6, characterized in that: The cylinder mounting plate (120) is L-shaped, and comprises: A third plate (121), wherein the second connection hole (122) is provided on the third plate (121), the second connection hole (122) is a waist-shaped hole, and the length direction of the waist-shaped hole is parallel to the length direction of the slide groove (113); The fourth plate (123) is vertically connected to one end of the third plate (121), and the fourth plate (123) is connected to the cylinder body of the rotating cylinder (130).

8. A winding machine, characterized in that: The winding machine includes the needle shifting mechanism described in any one of claims 1 to 7.

9. The winding machine according to claim 8, characterized in that The winding machine also includes: Turntable (210); A needle disc (220) mounted on the rotating disc (210); The needle shifting mechanism is installed on one side of the rotating disk (210), and the needle shifting mechanism is used to press down the needle shifting disk (220).

Images