Winding machine blanking device and battery production line

Abstract

The utility model belongs to the technical field of battery core winding, and discloses a winding machine blanking device and a battery production line. The winding machine discharging device comprises a first winding needle, a discharging mechanism and a lifting mechanism, the first winding needle is used for winding a diaphragm into a core package, two inserting grooves are evenly distributed in the circumferential direction of the first winding needle, and the two inserting grooves extend in the first direction; the discharging mechanism is located on one side, in the third direction, of the first winding needle and comprises two discharging needle assemblies oppositely arranged in the second direction and two bearing assemblies oppositely arranged in the second direction, each discharging needle assembly comprises a first driving part and a discharging needle, the first driving part can drive the discharging needle to move in the first direction, and the second driving part can drive the discharging needle to move in the second direction; the bearing assembly comprises a bearing rope and two fixing pieces, and the two ends of the bearing rope are connected to the two fixing pieces correspondingly. The lifting mechanism is configured to enable the first winding needle and the discharging mechanism to be close to or away from each other. According to the winding machine discharging device and the battery production line, the number of used discharging needles can be reduced, the debugging difficulty is lowered, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of core winding, in particular to a blanking device for a winding machine and a battery production line. Background Art

[0002] In the lithium battery industry, the winding machine usually uses the method of "blanking needle" to clamp the core package for blanking. At present, most of the blanking mechanisms of the winding machine use two long blanking needles or four short blanking needles. Since the blanking needle must be long enough to stably support the weight of the core package, during the debugging process of the blanking needle mechanism, on the one hand, it is necessary to debug the level of the blanking needle, that is, it is necessary to ensure the straightness of the blanking needle. On the other hand, it is necessary to ensure the accurate installation position of the blanking needle. For example, if it is skewed at the installation end, due to the long length of the blanking needle, the amount of skew at the free end of the blanking needle will be greater. When the blanking needle approaches the core package, it is easy to scratch the inside of the core package or damage the end face of the core package, and the service life of the blanking needle is short, and it is very easy to bend or break, seriously affecting the production efficiency and quality.

[0003] Therefore, it is urgent to design a blanking device for a winding machine and a battery production line. Summary of the Utility Model

[0004] An object of the utility model is to provide a blanking device for a winding machine, which can shorten the length of the blanking needle, reduce the risk of damage to the core package, reduce the number of blanking needles used, reduce the debugging difficulty, and extend the service life.

[0005] Another object of the utility model is to provide a battery production line, in which the blanking of the core package is safer and the service life of the parts is longer.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] The blanking device for a winding machine includes:

[0008] A first winding needle, the first winding needle is used to wind the diaphragm into a core package, the first winding needle is columnar and extends along a first direction, two slots are circumferentially distributed on the first winding needle, both of the two slots extend along the first direction, and the first winding needle can stay at the blanking position so that the two slots are arranged at intervals along a second direction, and the first direction is perpendicular to the second direction;

[0009] A feeding mechanism is located on one side of the first winding needle in the third direction. The feeding mechanism includes two feeding needle assemblies arranged relatively along the second direction and two supporting assemblies arranged relatively along the second direction. The feeding needle assembly includes a first driving member and a feeding needle. The feeding needle is installed at the output end of the first driving member. The first driving member can drive the feeding needle to move in the first direction. The supporting assembly includes a supporting rope and two fixing members. The two ends of the supporting rope are respectively connected to the two fixing members. The first winding needle can retreat and separate from the core package so that the supporting rope and the two feeding needles respectively support the two ends of the core package. The third direction is perpendicular to the first direction and the second direction respectively.

[0010] The lifting mechanism is configured to move the first winding needle and the blanking mechanism closer to or farther away from each other.

[0011] As an optional solution, the cross section of the supporting rope is circular; and / or

[0012] The material of the supporting rope is rubber.

[0013] As an optional solution, the above-mentioned winding machine unloading device also includes:

[0014] A pre-pressing mechanism, wherein the pre-pressing mechanism comprises a second driving member, a first connecting member, a third driving member and a pre-pressing member, wherein the first connecting member is mounted on the output end of the second driving member, the third driving member is mounted on the first connecting member, the pre-pressing member is mounted on the output end of the third driving member and can be driven by the third driving member to move along the third direction, the second driving member can drive the first connecting member to switch between an avoidance position and a pre-pressing position, so that the third driving member is located above the core package when in the pre-pressing position, the fixing member is correspondingly connected to the output end of the fourth driving member, and the fourth driving member can drive the corresponding fixing member to move along the first direction so that when the pre-pressing member is pressed downward, the supporting rope is separated from the core package;

[0015] The supporting mechanism is located below the blanking mechanism and is used for supporting the core bag separated from the blanking needle and the supporting rope.

[0016] As an optional solution, while the output end of the third driving member extends, the output end of the fourth driving member retracts.

[0017] As an alternative solution, both the above-mentioned third driving member and the above-mentioned fourth driving member are cylinders. The unwinding device of the winding machine further includes a main air source. The third driving member is connected to a first extending air path, and the fourth driving member is connected to a second retracting air path. When the output end of the fourth driving member retracts, the supporting rope is disengaged from the core package. The first extending air path and the second retracting air path converge at a first branch, and the first branch is in communication with the main air source. A second valve body is provided on the first branch.

[0018] As an alternative solution, the unwinding device of the winding machine further includes a discharging reel and a cutting mechanism. The discharging reel is used to extend the diaphragm so that the first winding needle winds the core package. The cutting mechanism includes a fifth driving member and a cutter. The cutter is installed at the output end of the fifth driving member. The fifth driving member can drive the cutter to approach or move away from the extended diaphragm to cut the diaphragm.

[0019] The fifth driving member is a cylinder and is connected to a third extending air path. The fourth driving member is also connected to a second extending air path. The third extending air path and the second extending air path converge at a second branch. The second branch is in communication with the main air source. A fourth valve body is provided on the second branch.

[0020] As an alternative solution, the third driving member is further connected to a first retracting air path. The first retracting air path is in parallel with the first branch and the second branch and is in communication with the main air source. A first valve body is provided on the first retracting air path; and / or

[0021] The fifth driving member is further connected to a third retracting air path. The third retracting air path is in parallel with the first branch and the second branch and is in communication with the main air source. A third valve body is provided on the third retracting air path.

[0022] As an alternative solution, the second extending air paths of the two above-mentioned fourth driving members converge at a third branch. The third branch and the third extending air path converge at the second branch; and / or

[0023] The second retracting air paths of the two above-mentioned fourth driving members converge at a fourth branch. The fourth branch and the first extending air path converge at the first branch.

[0024] As an alternative solution, the unwinding device of the winding machine further includes a distance adjusting mechanism. The distance adjusting mechanism includes a driving assembly and two mounting members. The two mounting members are arranged at intervals along a second direction. Each mounting member is equipped with a blanking needle assembly and a fixing member. The driving assembly is used to drive the two mounting members to approach or move away from each other.

[0025] The battery production line includes the above-mentioned unwinding device of the winding machine.

[0026] The beneficial effects of the present utility model are as follows:

[0027] The present utility model provides a blanking device for a winding machine. When the first winding needle is at the blanking position, the lifting mechanism drives the first winding needle and the blanking mechanism to approach each other until the supporting rope supports the core package. Then, the first driving member drives the blanking needle to move in the first direction, so that the two blanking needles are respectively inserted into the two slots. At this time, the first winding needle retracts. One end of the core package is supported by the two blanking needles, and the other end is supported by the supporting rope, so that the core package is smoothly blanked from the first winding needle. During this process, due to the setting of the supporting rope, the blanking needle can be set shorter, which can ensure the stability of the core package when it is disengaged from the first winding needle. Compared with the prior art, the length of the blanking needle is shortened. The shorter the length of the blanking needle, the smaller the accumulated amount of deflection of the free end of the blanking needle under the premise of the same installation deflection degree, reducing the possibility of the blanking needle inserting into the end face of the core package. At the same time, due to the enlarged tolerance range of the installation end, the debugging difficulty of the blanking needle is significantly reduced, improving the debugging efficiency. In addition, the shortening of the length of the blanking needle enhances the bending resistance of the blanking needle, and it is not easy to deform during long-term use, extending the service life of the blanking needle.

[0028] The present utility model also provides a battery production line. By adopting the above-mentioned blanking device for the winding machine, the blanking of the core package is safer and the service life of the parts is longer. Description of the Drawings

[0029] Figure 1 is a schematic structural diagram of the blanking device for the winding machine provided by the embodiment of the present utility model Figure 1 ;

[0030] Figure 2 is a schematic structural diagram of the blanking device for the winding machine provided by the embodiment of the present utility model Figure 2 ;

[0031] Figure 3 is a schematic structural diagram of a part of the blanking device for the winding machine provided by the embodiment of the present utility model;

[0032] Figure 4 is a pneumatic circuit diagram of the blanking device for the winding machine provided by the embodiment of the present utility model.

[0033] In the figure:

[0034] 10. Winding needle mechanism; 11. First winding needle; 111. Slot; 12. Second winding needle; 13. Turret; 14. Installation wall;

[0035] 20. Blanking mechanism; 21. Blanking needle assembly; 211. First driving member; 212. Blanking needle; 213. Pressing driving member; 214. Connecting plate; 22. Supporting assembly; 221. Fixing member; 222. Supporting rope; 223. Fourth driving member;

[0036] 30. Lifting mechanism; 31. Sixth driving member; 32. Second connecting member;

[0037] 40. Spacing adjustment mechanism; 41. Driving assembly; 411. Seventh driving member; 42. Mounting member; 421. Sliding portion;

[0038] 50. Preloading mechanism; 52. First connecting member; 53. Third driving member; 54. Preloading member;

[0039] 60. Supporting mechanism;

[0040] 71. Main air source; 72. First extending air path; 73. First retracting air path;

[0041] 74. Second extending air path; 75. Second retracting air path; 76. First branch;

[0042] 77. Second valve body;

[0043] 78. Third extending air path; 79. Third retracting air path; 81. Second branch; 82. Fourth valve body;

[0044] 83. First valve body; 84. Third valve body; 85. Third branch; 86. Fourth branch;

[0045] 90. Cutting mechanism; 91. Fifth driving member; 92. Cutter. Detailed implementation manner

[0046] The present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present utility model, rather than limiting the present utility model. In addition, it should be noted that for the convenience of description, only some parts related to the present utility model are shown in the drawings, rather than all the structures.

[0047] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected", and "fixed" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0048] In the present utility model, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or simply means that the horizontal height of the first feature is lower than that of the second feature.

[0049] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "left" and "right" are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0050] This embodiment provides a winding machine blanking device, which can shorten the length of the blanking needle 212, reduce the risk of damage to the core package, reduce the number of blanking needles 212 used, reduce the debugging difficulty, and extend the service life. As Figure 1 shown, the winding machine blanking device includes a first winding needle 11, a blanking mechanism 20 and a lifting mechanism 30. The first winding needle 11 is used to wind the diaphragm into a core package. The first winding needle 11 is columnar and extends along a first direction. Two slots 111 are evenly distributed in the circumferential direction of the first winding needle 11, and both of the two slots 111 extend along the first direction (the X direction in the figure). The first winding needle 11 can stay at the blanking position so that the two slots 111 are arranged at intervals along a second direction (the Y direction in the figure, the Y direction is perpendicular to the X direction); the blanking mechanism 20 is located on one side of the first winding needle 11 in a third direction (the Z direction in the figure, that is, the vertical direction, the Z direction is perpendicular to the X direction and the Y direction respectively). The blanking mechanism 20 includes two blanking needle assemblies 21 arranged oppositely along the second direction and two supporting assemblies 22 arranged oppositely along the second direction. The blanking needle assembly 21 includes a first driving member 211 and a blanking needle 212. The blanking needle 212 is installed at the output end of the first driving member 211. The first driving member 211 can drive the blanking needle 212 to move along the first direction. The supporting assembly 22 includes a supporting rope 222 and two fixing members 221. The two ends of the supporting rope 222 are respectively connected to the two fixing members 221. The supporting rope 222 and the two blanking needles 212 are respectively used to support the two ends of the core package; the lifting mechanism 30 is configured to enable the first winding needle 11 and the blanking mechanism 20 to approach or move away from each other.

[0051] The above-mentioned winding machine blanking mechanism 20, when the first winding needle 11 is at the blanking position (Figure 1 When the position of the first winding needle 11 in Figure 1 is the blanking position), the lifting mechanism 30 drives the first winding needle 11 and the blanking mechanism 20 to approach each other until the supporting rope 222 supports the core package. Then, the first driving member 211 drives the blanking needle 212 to move in the first direction, so that the two blanking needles 212 are respectively inserted into the two slots 111. At this time, the first winding needle 11 retracts. One end of the core package is supported by the two blanking needles 212, and the other end is supported by the supporting rope 222, so that the core package is smoothly unloaded from the first winding needle 11. During this process, due to the setting of the supporting rope 222, the blanking needle 212 can be set shorter, which can ensure the stability when the core package is disengaged from the first winding needle 11. Compared with the prior art, the length of the blanking needle 212 is shortened. The shorter the length of the blanking needle 212 is, under the premise of the same installation deviation degree, the accumulated deviation of the free end of the blanking needle 212 is smaller, reducing the possibility of the blanking needle 212 inserting into the end face of the core package. At the same time, due to the enlarged tolerance range of the installation end, the debugging difficulty of the blanking needle 212 is significantly reduced, improving the debugging efficiency; in addition, the shortening of the length of the blanking needle 212 enhances the bending resistance of the blanking needle 212, and it is not easy to deform during long-term use, extending the service life of the blanking needle 212.

[0052] Optionally, as Figure 1 shown, the blanking needle assembly 21 further includes a connecting plate 214 and a pressing driving member 213. The connecting plate 214 is installed at the output end of the first driving member 211, and the pressing driving member 213 is installed on the connecting plate 214. The pressing driving member 213 can output a movement in the second direction, and the output ends of the pressing driving member 213 are respectively located on both sides of the core package. Through the above setting, when the first winding needle 11 retracts, the output ends of the pressing driving member 213 extend out, pressing the core package against the blanking needle 212 to ensure that the blanking needle 212 and the pressing driving member 213 jointly take away the core package.

[0053] Optionally, as Figure 1 described, the blanking mechanism 20 of the winding machine further includes an output winding (not shown), and the output winding is used to extend the diaphragm so that the first winding needle 11 winds into a core package. The winding needle mechanism 10 further includes a second winding needle 12, a mounting wall 14 and a turret 13. The first winding needle 11 and the second winding needle 12 are both pivotally connected to the turret 13, and the turret 13 is installed at the output end of a rotation driving member. Through the above setting, combined with Figure 1 , the first winding needle 11 is located at the position of the second winding needle 12 in Figure 1 during the winding stage. When the winding is completed, the turret 13 is rotated by the rotation driving member, so that the first winding needle 11 is located below the second winding needle 12, facilitating the second winding needle 12 to continue winding the diaphragm and improving the continuity of the equipment operation.

[0054] Optionally, combined with Figure 1 and Figure 2The unloading device of the winding machine also includes a cutting mechanism 90, which includes a fifth driving member 91 and a cutter 92. The cutter 92 is installed at the output end of the fifth driving member 91. The fifth driving member 91 can drive the cutter 92 to approach or move away from the diaphragm of the extended core package to cut the diaphragm. The above arrangement enables the diaphragm between the first winding needle 11 and the second winding needle 12 to be cut when the first winding needle 11 is located at the bottom after the turret 13 rotates 180°, so that the second winding needle 12 continues to be wound into a new core package.

[0055] Optionally, the winding machine unloading device further comprises a laminating mechanism, which is used to laminarize the cut edge of the diaphragm onto the core package outside the first winding needle 11. It should be noted that the laminating mechanism is a common setting in the prior art, and its structure is not described in detail here.

[0056] Alternatively, if Figure 1 and Figure 2 As shown, the unloading device of the winding machine also includes a pre-pressing mechanism 50 and a supporting mechanism 60. The pre-pressing mechanism 50 includes a second driving member (not shown in the figure), a first connecting member 52, a third driving member 53 and a pre-pressing member 54. The first connecting member 52 is installed at the output end of the second driving member, and the third driving member 53 is installed at the first connecting member 52. The pre-pressing member 54 is installed at the output end of the third driving member 53 and can be driven by the third driving member 53 to move along the third direction. The second driving member can drive the first connecting member 52 to switch between the avoidance position (the state in the figure) and the pre-pressing position, so that the third driving member 53 is located above the core package when in the pre-pressing position. The fixing member 221 is correspondingly connected to the output end of the fourth driving member 223. The fourth driving member 223 can drive the corresponding fixing member 221 to move in the first direction so that the supporting rope 222 is separated from the core package when the pre-pressing member 54 is pressed down; the supporting mechanism 60 is located below the unloading mechanism 20, and is used to support the core package that is separated from the unloading needle 212 and the supporting rope 222. Through the above arrangement, after the two unloading needles 212 and the supporting rope 222 unload the core package from the first winding needle 11, the lifting mechanism 30 drives the unloading mechanism 20 to descend to a position close to the supporting mechanism 60, and the supporting rope 222 is driven by the fourth driving member 223 to retract and detach from the core package. The unloading needle 212 is driven by the first driving member 211 to detach from the core package, and the core package falls onto the supporting mechanism 60. The second driving member drives the first connecting member 52 to move, so that the third driving member 53 reaches the top of the core package, and the third driving member 53 then drives the pre-pressing member 54 to press down, so that the core package is flattened to a certain extent, which is convenient for subsequent storage.

[0057] Optionally, the supporting mechanism 60 may be in the form of a conveyor belt, and after the core package is pre-pressed, the conveyor belt transports the core package to the next workstation.

[0058] Alternatively, if Figure 1As shown, the cross-section of the supporting rope 222 is circular. With the above arrangement, when the fourth driving member 223 drives the supporting rope 222 to retract and separate from the core package, the contact area between the circular supporting rope 222 and the core package is minimized, and it is not easy to drag the diaphragm. It can be understood that this solution is an improvement after testing with a sheet-shaped supporting rope 222 and finding that the sheet-shaped supporting rope 222 is likely to take the diaphragm outside the core package away from the core package.

[0059] Optionally, the material of the supporting rope 222 is rubber. Rubber not only has a certain elasticity to ensure good supporting force, but also has a long service life, is convenient to obtain materials, and is easy to replace.

[0060] Optionally, as Figure 2 and Figure 3 shown, the lifting mechanism 30 includes a sixth driving member 31 and a second connecting member 32. The blanking mechanism 20 is installed on the second connecting member 32. That is to say, in this embodiment, the lifting mechanism 30 drives the second connecting member 32 to lift and drive the blanking mechanism 20 to lift, so as to adjust the distance between the blanking mechanism 20 and the first winding needle 11. In other embodiments, the lifting mechanism 30 can also drive the mounting wall 14 to lift to adjust the distance between the blanking mechanism 20 and the first winding needle 11, which is not limited here.

[0061] Optionally, as Figure 2 and Figure 3 shown, the winding machine blanking device further includes a distance adjusting mechanism 40. The distance adjusting mechanism 40 includes a driving component 41 and two mounting members 42. The two mounting members 42 are arranged at intervals along the second direction. Each mounting member 42 is provided with a blanking needle assembly 21 and a fixing member 221. The driving component 41 is used to drive the two mounting members 42 to approach or separate from each other. With the above arrangement, the distance between the two blanking needles 212 can be adjusted. Thus, before pre-pressing, the driving component 41 first drives the two blanking needles 212 to separate from each other, so that the core package is "flattened" by the two blanking needles 212, and two creases are generated inside the core package. Subsequently, the creases of the pre-pressed product are more uniform, and at the same time, it prevents the circular core package from rolling during the pre-pressing process.

[0062] Optionally, referring to Figure 3 , the second connecting member 32 is arranged in a rectangular shape. The side of the mounting member 42 facing the second connecting member 32 is provided with a sliding portion 421, and a sliding groove extending along the second direction is opened on the sliding portion 421, so that the sliding of the mounting member 42 is smoother and the direction is more accurate.

[0063] Optionally, while the output end of the third driving member 53 extends, the output end of the fourth driving member 223 retracts. With the above arrangement, it is ensured that when the pre-pressing member 54 starts to press down, the supporting rope 222 is separated from the core package at the same time, ensuring that the supporting rope 222 will not be pressed during the pre-pressing process.

[0064] Optionally, as Figure 4 shown, both the third driving member 53 and the fourth driving member 223 are air cylinders. The unwinding device of the winding machine further includes a main air source 71. The third driving member 53 is connected to a first extending air path 72, and the fourth driving member 223 is connected to a second retracting air path 75. When the output end of the fourth driving member 223 retracts, the supporting rope 222 is disengaged from the core package. The first extending air path 72 and the second retracting air path 75 converge at a first branch 76. The first branch 76 is in communication with the main air source 71, and a second valve body 77 is provided on the first branch 76. Through the above arrangement, a main air source 71 simultaneously controls the extension of the output end of the third driving member 53 and the retraction of the output end of the fourth driving member 223, and the second valve body 77 is used to cut off or ventilate this action uniformly, strictly ensuring that the output end of the third driving member 53 extends while the output end of the fourth driving member 223 retracts.

[0065] Optionally, when the output end of the fifth driving member 91 extends, the output end of the fourth driving member 223 also extends. It can be understood that once the cutting knife 92 cuts the diaphragm, the supporting rope 222 is immediately driven by the fourth driving member 223 to wait to support the core package, preventing the core package from falling.

[0066] Optionally, as Figure 4 shown, the fifth driving member 91 is an air cylinder and is connected to a third extending air path 78. The fourth driving member 223 is also connected to a second extending air path 74. The third extending air path 78 and the second extending air path 74 converge at a second branch 81. The second branch 81 is in communication with the main air source 71, and a fourth valve body 82 is provided on the second branch 81. Through the above arrangement, a main air source 71 simultaneously controls the extension of the output end of the fifth driving member 91 and the extension of the output end of the fourth driving member 223, and the fourth valve body 82 is used to cut off or ventilate this action uniformly, strictly ensuring that the output end of the fifth driving member 91 extends while the output end of the fourth driving member 223 extends.

[0067] Optionally, as Figure 4 shown, the third driving member 53 is further connected to a first retracting air path 73. The first retracting air path 73 is in parallel with the first branch 76 and the second branch 81 and is in communication with the main air source 71. A first valve body 83 is provided on the first retracting air path 73. That is to say, by opening the first valve body 83, the retraction of the output end of the third driving member 53 is ensured, that is, the lifting of the preloading member 54.

[0068] Optionally, as Figure 4 shown, the fifth driving member 91 is further connected to a third retracting air path 79. The third retracting air path 79 is in parallel with the first branch 76 and the second branch 81 and is in communication with the main air source 71. A third valve body 84 is provided on the third retracting air path 79. That is to say, by opening the third valve body 84, the retraction of the output end of the fifth driving member 91 is ensured, that is, the retraction of the cutting knife 92.

[0069] Optionally, as Figure 4 shown, the second extending air paths 74 of the two fourth driving members 223 converge at the third branch path 85, and the third branch path 85 and the third extending air path 78 converge at the second branch path 81, so as to simultaneously extend the output ends of the two fourth driving members 223.

[0070] Optionally, as Figure 4 shown, the second retracting air paths 75 of the two fourth driving members 223 converge at the fourth branch path 86, and the fourth branch path 86 and the first extending air path 72 converge at the first branch path 76, so as to simultaneously retract the output ends of the two fourth driving members 223.

[0071] In summary, as Figure 4 shown, by using a main air source 71, when the first valve body 83, the second valve body 77, and the third valve body 84 are closed and the fourth valve body 82 is opened, the cutter 92 cuts the diaphragm while the supporting rope 222 is located at the waiting position under the drive of the fourth driving member 223, ensuring the consistency of the actions of the two; when the first valve body 83, the third valve body 84, and the fourth valve body 82 are closed and the second valve body 77 is opened, the preloading member 54 presses down while the supporting rope 222 retracts under the drive of the fourth driving member 223 and disengages from the core package, ensuring the consistency of the actions of the two; when the first valve body 83 is opened alone, the preloading member 54 lifts, and when the third valve body 84 is opened alone, the cutter 92 retracts; the above air path is only applicable to one main air source 71, and by further arranging four valve bodies and parallel air paths, the synchronous actions of different driving members are realized, and the arrangement of the air path is streamlined.

[0072] Next, in conjunction with Figures 1 - 4 the operation process of the unwinding device of the winding machine will be described:

[0073] 1. The diaphragm of the discharge roll is connected to the first winding needle 11. After the first winding needle 11 winds a core package with sufficient thickness, the turret 13 rotates 180°, and the first winding needle 11 is below and the second winding needle 12 is above (this is a general positional relationship, and actually it may not be exactly vertical).

[0074] 2. When the fourth valve body 82 is opened alone, while the cutter 92 cuts the diaphragm, the fourth driving member 223 drives the supporting rope 222 to extend, so that the supporting rope 222 is located below the core package.

[0075] 3. The lifting mechanism 30 drives the unwinding mechanism 20 to move upward close to the first winding needle 11. After the core package contacts the supporting rope 222, the two seventh driving members 411 simultaneously drive the two mounting members 42 to approach each other, so that the distance between the two unwinding needles 212 is adapted to the distance between the two slots 111.

[0076] 4. The first driving member 211 drives the blanking needle 212 to approach the core package along the first direction and insert it into the slot 111. At the same time, the pressing driving member 213 extends to press the core package against the blanking needle 212.

[0077] 5. The first coiling needle 11 retracts, and the other end of the core package lands on the supporting rope 222.

[0078] 6. The lifting mechanism 30 drives the entire blanking mechanism 20 to descend.

[0079] 7. The driving assembly 41 drives the two mounting members 42 away from each other, so that the two blanking needles 212 flatten the core package (this step can be carried out simultaneously with step 6).

[0080] 8. The second driving member drives the first connecting member 52 to move along the second direction above the core package. The second valve body 77 is opened separately. The third driving member 53 starts to drive the pre-pressing member 54 to press down, and at the same time, the fourth driving member 223 drives the supporting rope 222 to retract.

[0081] 9. The supporting mechanism 60 transports the flattened core package to the next working station.

[0082] This embodiment also provides a battery production line, including the above-mentioned winding machine blanking device. By adopting the above-mentioned winding machine blanking device, the blanking of the core package is safer, and the service life of the parts is longer.

[0083] Obviously, the above-mentioned embodiments of the present invention are only examples for clearly explaining the present invention, rather than limiting the implementation manners of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. Winding machine unloading device, characterized in that: include: A first winding needle (11), the first winding needle (11) is used to wind the diaphragm into a core package, the first winding needle (11) is columnar and extends along a first direction, two slots (111) are evenly distributed around the circumference of the first winding needle (11), the two slots (111) both extend along the first direction, the first winding needle (11) can stay at a material discharge position so that the two slots (111) are arranged at intervals along a second direction, and the first direction is perpendicular to the second direction; A feeding mechanism (20) is located on one side of the first winding needle (11) in the third direction, the feeding mechanism (20) comprises two feeding needle assemblies (21) arranged opposite to each other along the second direction and two supporting assemblies (22) arranged opposite to each other along the second direction, the feeding needle assembly (21) comprises a first driving member (211) and a feeding needle (212), the feeding needle (212) is installed at the output end of the first driving member (211), the first driving member (211) can drive the feeding needle (212) to move along the first direction, the supporting assembly (22) comprises a supporting rope (222) and two fixing members (221), the two ends of the supporting rope (222) are respectively connected to the two fixing members (221), the first winding needle (11) can retreat and separate from the core package so that the supporting rope (222) and the two feeding needles (212) respectively support the two ends of the core package, and the third direction is perpendicular to the first direction and the second direction respectively; The lifting mechanism (30) is configured to enable the first winding needle (11) and the unloading mechanism (20) to move closer to or farther away from each other.

2. The unloading device of the winding machine according to claim 1, characterized in that: The cross section of the supporting rope (222) is circular; and / or The material of the supporting rope (222) is rubber.

3. The unloading device of the winding machine according to claim 1, characterized in that: The winding machine unloading device also includes: A pre-pressing mechanism (50), the pre-pressing mechanism (50) comprising a second driving member, a first connecting member (52), a third driving member (53) and a pre-pressing member (54), the first connecting member (52) being mounted on the output end of the second driving member, the third driving member (53) being mounted on the first connecting member (52), the pre-pressing member (54) being mounted on the output end of the third driving member (53) and being driven by the third driving member (53) to move along the third direction, the second driving member being capable of driving the first connecting member (52) to switch between an avoidance position and a pre-pressing position, so that the third driving member (53) is located above the core package in the pre-pressing position, the fixing member (221) being correspondingly connected to the output end of a fourth driving member (223), the fourth driving member (223) being capable of driving the corresponding fixing member (221) to move along the first direction so that when the pre-pressing member (54) is pressed downward, the supporting rope (222) is separated from the core package; The supporting mechanism (60) is located below the blanking mechanism (20) and is used to support the core package that is separated from the blanking needle (212) and the supporting rope (222).

4. The unloading device of the winding machine according to claim 3 is characterized in that: While the output end of the third driving member (53) extends, the output end of the fourth driving member (223) retracts.

5. The unloading device of the winding machine according to claim 4, characterized in that: The third driving member (53) and the fourth driving member (223) are both cylinders. The winding machine unloading device also includes a main air source (71). The third driving member (53) is connected to a first extending air path (72). The fourth driving member (223) is connected to a second retracting air path (75). When the output end of the fourth driving member (223) is retracted, the supporting rope (222) is separated from the core package. The first extending air path (72) and the second retracting air path (75) are combined into a first branch (76). The first branch (76) is connected to the main air source (71). A second valve body (77) is provided on the first branch (76).

6. The unloading device of the winding machine according to claim 5, characterized in that: The unloading device of the winding machine also includes a discharge roll and a cutting mechanism (90), wherein the discharge roll is used to extend the diaphragm so that the first winding needle (11) can wind the core package, and the cutting mechanism (90) includes a fifth driving member (91) and a cutter (92), wherein the cutter (92) is installed at the output end of the fifth driving member (91), and the fifth driving member (91) can drive the cutter (92) to approach or move away from the extended diaphragm so as to cut the diaphragm; The fifth driving member (91) is a cylinder and is connected to a third extension air path (78). The fourth driving member (223) is also connected to a second extension air path (74). The third extension air path (78) and the second extension air path (74) converge into a second branch (81). The second branch (81) is connected to the main air source (71). A fourth valve body (82) is provided on the second branch (81).

7. The unloading device of the winding machine according to claim 6, characterized in that: The third driving member (53) is further connected to a first retracting air path (73), the first retracting air path (73) is connected in parallel with the first branch path (76) and the second branch path (81) and is in communication with the main air source (71), and a first valve body (83) is provided on the first retracting air path (73); and / or The fifth driving member (91) is also connected to a third retracting air circuit (79), the third retracting air circuit (79) is connected in parallel with the first branch circuit (76) and the second branch circuit (81) and is in communication with the main air source (71), and a third valve body (84) is provided on the third retracting air circuit (79).

8. The unloading device of the winding machine according to claim 6, characterized in that: The second extending air paths (74) of the two fourth driving members (223) are merged into a third branch path (85), and the third branch path (85) and the third extending air path (78) are merged into the second branch path (81); and / or The second retracting air paths (75) of the two fourth driving members (223) merge into a fourth branch path (86), and the fourth branch path (86) and the first extending air path (72) merge into the first branch path (76).

9. The unloading device for a winding machine according to any one of claims 1 to 8, characterized in that: The winding machine unloading device also includes a distance adjustment mechanism (40), the distance adjustment mechanism (40) includes a driving assembly (41) and two mounting members (42), the two mounting members (42) are arranged at intervals along the second direction, each of the mounting members (42) is mounted with a unloading needle assembly (21) and a fixing member (221), and the driving assembly (41) is used to drive the two mounting members (42) to move closer to or away from each other.

10. Battery production line, characterized in that, It comprises a winding machine unloading device as described in any one of claims 1-9.

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