Online testing device for nailing resistance of guide pin of nailing winding machine

Abstract

The utility model is suitable for the technical field of lithium battery production, and provides an on-line testing device for the nailing resistance of a guide pin of a nailing winding machine. The on-line testing device for the pin connection resistance of the guide pin of the pin connection winding machine comprises a resistance value detection mechanism, a shearing mechanism and a winding mechanism along the movement path of a pole piece. After the winding mechanism completes a winding process, the pole piece can be cut off from the preset position through the shearing mechanism, and the resistance value detection mechanism is in contact with the tab of the pole piece before the shearing mechanism cuts off the pole piece, so that the contact resistance of the tab is detected. According to the utility model, the detection of the contact resistance of the tab can be completed while the pole piece is wound, and unqualified products can be directly removed according to the detection result after the winding mechanism finishes winding, so that the step of detecting the contact resistance of the tab is reduced, the detection of the contact resistance of the lithium battery tab is more convenient, and the production efficiency of the lithium battery is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to lithium battery production technical field especially relates to a nail connection winding machine guide needle nail connection resistance on -line testing device. BACKGROUND

[0002] Lithium battery is a kind of battery with higher energy density and good environmental protection performance, with high energy, high reliability and good processing, therefore is widely used in various portable electronic equipment, electric vehicle, energy storage power station and other electric equipment. At present, the capacitive lithium battery is mainly composed of battery core and outer package, wherein the battery core is wound by positive and negative pole piece and diaphragm, and before the pole piece winding, tab is installed on the pole piece, to facilitate the connection between the lithium battery after winding and external circuit. In the production process of lithium battery, the resistance at tab needs to be detected to ensure the quality of tab installation, but the existing lithium battery tab contact resistance test mode usually moves to the aging machine by staff after lithium battery winding, and the test is completed by the resistance test mechanism on the aging machine, which causes the lithium battery tab contact resistance test to have the problems of complex steps and low work efficiency, seriously affecting the production efficiency of lithium battery. SUMMARY

[0003] The utility model aims at providing a kind of nail connection winding machine guide needle nail connection resistance on -line testing device, to solve the technical problem of the complex resistance test step of guide needle of lithium battery in prior art.

[0004] The utility model is realized as follows, first, a kind of nail connection winding machine guide needle nail connection resistance on -line testing device is provided, for detecting the resistance of tab, including resistance value detection mechanism, cutting mechanism and winding mechanism, the winding mechanism is used to wind pole piece, the cutting mechanism is used to cut off pole piece from preset position after the winding mechanism completes the winding of pole piece, the resistance value detection mechanism is used to contact the tab of pole piece before the cutting mechanism cuts off pole piece, and the resistance value of the tab is detected.

[0005] In an optional embodiment, the nail connection winding machine guide needle nail connection resistance on -line testing device further includes control unit and resistance value display unit, the signal output end of the resistance value detection mechanism is electrically connected with the resistance value display unit, the resistance value display unit is used to display the resistance value of tab, and the resistance value display unit is electrically connected with the control unit.

[0006] In an alternative embodiment, the resistance detecting mechanism comprises a first detecting group and a second detecting group, the first detecting group and the second detecting group are arranged at intervals along the movement path of the pole piece, and a first adjusting mechanism is arranged between the first detecting group and the second detecting group along the movement path of the pole piece, the first adjusting mechanism is used to adjust the length of the pole piece between the first detecting group and the second detecting group, so that the interval between the first detecting group and the second detecting group along the movement path of the pole piece matches the interval of the tabs on the pole piece.

[0007] In an alternative embodiment, a second adjusting mechanism is arranged between the second detecting group and the winding mechanism, the second adjusting mechanism is used to adjust the length of the pole piece between the second detecting group and the winding mechanism, so that the interval between the second detecting group and the winding mechanism along the movement path of the pole piece matches the interval of the tabs.

[0008] In an alternative embodiment, the first adjusting mechanism and the second adjusting mechanism each comprise a fixed roller shaft, a movable roller shaft, and a translation assembly, the movable roller shaft and the fixed roller shaft are arranged to wrap around the pole piece, the movable roller shaft and the fixed roller shaft are arranged in parallel, the movable roller shaft has a degree of freedom of movement perpendicular to its own axis relative to the fixed roller shaft, and the translation assembly is used to adjust the interval between the movable roller shaft and the fixed roller shaft.

[0009] In an alternative embodiment, the translation assembly comprises a sliding bracket and a translation slider, the movable roller shaft is rotationally arranged on the translation slider, the sliding bracket is provided with a sliding structure, the translation slider is slidingly connected between the sliding structure and the sliding bracket, and the position of the movable roller shaft is adjusted by the movement of the translation slider.

[0010] In an alternative embodiment, the sliding structure comprises a sliding groove arranged on the sliding bracket, an adjusting pin is arranged to slide along the length of the sliding groove inside the sliding groove, one end of the adjusting pin is movably connected to the translation slider, and the other end of the adjusting pin abuts against one side of the sliding bracket away from the translation slider.

[0011] In an alternative embodiment, the number of shafts of the fixed roller shaft and the movable roller shaft is multiple, multiple movable roller shafts are arranged at intervals along a first direction, multiple fixed roller shafts are arranged at intervals along the first direction, and the fixed roller shafts and the movable roller shafts are arranged at intervals along a second direction, the first direction and the second direction are arranged at an angle.

[0012] In an optional embodiment, the first detection group and the second detection group each include a detection bracket, a detection slider, a driving unit, a resistance detection unit, and a support component, the detection slider is movably arranged on the detection bracket, the support component is arranged opposite to the detection slider, the support component and the detection slider are respectively located at two sides of the pole piece, the driving unit is arranged on the detection bracket and connected with the detection slider at a driving end, the driving unit is used to drive the detection slider to move close to or away from the support component, and the resistance detection unit is arranged on a side of the detection slider facing the support component.

[0013] In an optional embodiment, the resistance detection unit has a test plane, and the test plane is used to abut against the tab.

[0014] The first aspect of the utility model relative to prior art's technical effect is: through setting resistance detection mechanism, cutting mechanism and winding mechanism along the pole piece movement path. Can complete a winding process after winding mechanism, through cutting mechanism the pole piece is cut from preset position, and before cutting mechanism cuts the pole piece, resistance detection mechanism and the tab of pole piece contact, to detect the contact resistance of tab. Compared with the mode that the lithium battery is transported to the aging machine after being wound into shape in the prior art, and the resistance test mechanism on the aging machine is used to complete the test, the needle pinning resistance online test device of the needle pinning winding machine can complete the detection of the contact resistance of the tab while winding the pole piece, and can directly remove the unqualified product according to the detection result after winding is completed, reduces the step of detecting the contact resistance of the tab, makes the detection of the contact resistance of the tab of lithium battery more convenient, thereby improve the production efficiency of lithium battery. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will be briefly introduced to the drawings needed to be used in the embodiment of the utility model or prior art description, obviously, the following described drawings only are some embodiments of the utility model, for the ordinary skilled person in the art, under the premise of not paying the creative labor, still can obtain other drawings according to these drawings.

[0016] Figure 1 It is the schematic diagram of the needle pinning resistance online test device of the needle pinning winding machine provided by the embodiment of the utility model;

[0017] Figure 2 It is the circuit connection diagram schematic diagram of the needle pinning resistance online test device of the needle pinning winding machine provided by the embodiment of the utility model;

[0018] Figure 3 It is the structure schematic diagram of the first detection group adopted by the embodiment of the utility model;

[0019] Figure 4 is the structural schematic view of the detection sliding block and the resistance detection unit adopted by the embodiment of the utility model;

[0020] Figure 5 is the structural schematic view of the first adjusting mechanism adopted by the embodiment of the utility model.

[0021] Mark explanation:

[0022] 1, resistance detection mechanism; 2, shearing mechanism; 3, winding mechanism; 4, first adjusting mechanism; 41, fixed roller shaft; 42, movable roller shaft; 43, translation assembly; 431, sliding support; 432, translation sliding block; 433, sliding structure; 4331, sliding groove; 434, adjusting pin; 5, second adjusting mechanism; 6, first detection group; 61, detection support; 62, detection sliding block; 63, driving unit; 64, resistance detection unit; 641, detection plane; 65, resistance test vice; 651, resistance test sheet; 652, insulating pad; 643, supporting plate; 66, guide structure; 7, second detection group; 8, control unit; 9, resistance display unit. Specific implementation

[0023] The embodiments of the utility model are described in detail below, and the examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the utility model, and cannot be understood as a limitation on the utility model.

[0024] In the description of the utility model, it is understood that the orientation or position relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0025] In addition, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0026] In the utility model, unless another definite provision and limitation, the terms "mount", "link", "connect", "fix" and so on terms should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electrical connection;Can be direct connection, also can through intermediate medium indirectly connect, can be two element inside's intercommunication or two element's interaction relationship.For the ordinary skill in the art, can understand the concrete meaning of above-mentioned term in the utility model according to specific circumstances.

[0027] In order to make the purpose, technical scheme and advantage of the utility model more clearly, the following will be further detailed with the utility model with the drawings and examples.

[0028] Please refer to Figure 1 As shown in the utility model embodiment, first, a kind of nail connection winding machine guide needle nail connection resistance on-line testing device is provided, for detecting the resistance of tab, including resistance value detection mechanism 1, cutting mechanism 2 and winding mechanism 3 on the path of movement of pole piece, winding mechanism 3 is used to wind pole piece, cutting mechanism 2 is used to cut pole piece from preset position after winding mechanism 3 completes the winding of pole piece, resistance value detection mechanism 1 is used to contact the tab of pole piece before cutting mechanism 2 cuts pole piece, and the resistance of tab is detected.

[0029] Specifically, resistance value detection mechanism 1 refers to the component or assembly for detecting the contact resistance of tab on pole piece, resistance value detection mechanism 1 can generally include detection part and driving part for driving detection part movement, can contact the tab on pole piece by driving part driving detection part when needing detection, and drive detection part away from pole piece by driving part when not needing detection.Cutting mechanism 2 refers to the device or assembly for cutting pole piece.Winding mechanism 3 refers to the equipment for winding pole piece with other polarity pole piece and diaphragm.It should be noted that cutting mechanism 2 can include two components that can move relative to each other, and the edge of the two components is pressed against each other to cut the pole piece.The specific structure and working principle of winding mechanism 3 are both common technical means in the art, which will not be repeated here.In addition, in order to ensure the compactness of the overall structure, resistance value detection mechanism 1, cutting mechanism 2 and winding mechanism 3 can be arranged on the same support plate.

[0030] The nail winding machine guide needle nail resistance on-line testing device provided by the embodiment of the utility model, through setting resistance value detection mechanism, shearing mechanism 2 and winding mechanism 3 along the motion path of the pole piece, after winding mechanism 3 completes a winding process, the pole piece is cut off from the preset position through shearing mechanism 2, and the resistance value detection mechanism 1 contacts the pole lug of the pole piece before shearing mechanism 2 cuts off the pole piece, so as to detect the contact resistance of the guide needle. Compared with the prior art that transports the lithium battery to the aging machine after winding and forming the lithium battery, and completes the test through the resistance testing mechanism on the aging machine, the nail winding machine guide needle nail resistance on-line testing device can complete the detection of the contact resistance of the guide needle while winding the pole piece, and can directly remove the unqualified product according to the detection result after winding mechanism 3 completes winding, reduces the steps of detecting the contact resistance of the guide needle, makes the detection of the contact resistance of the guide needle of the lithium battery more convenient, and improves the production efficiency of the lithium battery.

[0031] It should be noted that the time of resistance value detection mechanism 1 contacting the pole piece is several milliseconds, and there is a time interval between the measurement of the guide needle of the pole piece by resistance value detection mechanism 1 and the cutting off of the pole piece from the preset position by shearing mechanism 2, and the time interval is also several milliseconds, which needs to be ensured that the pole piece is in the uncut state when resistance value detection mechanism 1 measures the resistance of the pole piece.

[0032] In an embodiment, referring to 2, the nail winding machine guide needle nail resistance on-line testing device further comprises a control unit 8 and a resistance value display unit 9, the signal output end of resistance value detection mechanism 1 is electrically connected with the resistance value display unit 9, and the resistance value display unit 9 is electrically connected with the control unit 8, and the resistance value display unit 9 is used for displaying the resistance value of the guide needle. Specifically, the control unit 8 refers to an electrical element used for calculating and executing control quality, and the control unit 8 can be a single unit such as a PLC (Programmable Logic Controller, programmable logic controller) or an MCU (Microcontroller Unit, microcontroller unit), and the control unit 8 can also directly adopt an industrial computer and the like components. The resistance value display unit 9 refers to a component or assembly that can display an electrical signal, and the resistance value display unit 9 can adopt display modes such as liquid crystal display, cathode ray tube, plasma display or electronic ink. In the embodiment, through electrically connecting the signal output end of resistance value detection mechanism 1 with the resistance value display unit 9, the data detected by resistance value detection mechanism 1 can be displayed through the resistance value display unit 9, so that the detection value of resistance value detection mechanism 1 is more intuitive, and the resistance value display unit 9 is electrically connected with the control unit 8, the control unit 8 can acquire the resistance value at the resistance value display unit 9, and control the execution mechanism to work according to the resistance value, such as removing the unqualified product from the winding mechanism through the removal mechanism when the resistance detection of the guide needle is unqualified.

[0033] In an alternative embodiment, referring to Figure 2 The control unit 8 can also be electrically connected to the control end of the defective material returning mechanism. When the contact resistance of the needle is detected to be unqualified by the resistance detecting mechanism 1, the control unit 8 can control the defective material returning mechanism to remove the wound product, thereby ensuring the quality of the product.

[0034] In an embodiment, referring to Figure 1 The resistance detecting mechanism 1 includes a first detection group 6 and a second detection group 7. The first detection group 6 and the second detection group 7 are arranged at intervals along the movement path of the pole piece. A first adjusting mechanism 4 is arranged between the first detection group 6 and the second detection group 7 along the movement path of the pole piece. The first adjusting mechanism 4 is used to adjust the length of the pole piece between the first detection group 6 and the second detection group 7, so that the interval of the first detection group 6 and the second detection group 7 along the movement path of the pole piece matches the interval of the needles on the pole piece.

[0035] Specifically, the first detection group 6 and the second detection group 7 refer to components or assemblies for detecting the resistance of the needle. They usually include a detection part and a driving part for driving the movement of the detection part. The driving part can drive the detection part to contact the needle on the pole piece when detection is needed, and drive the detection part to move away from the pole piece when detection is not needed. The first adjusting mechanism 4 refers to a component or assembly for adjusting the length of the pole piece along the movement path of the pole piece. It can be manually adjusted or automatically adjusted.

[0036] In the embodiment, the resistance detecting mechanism 1 includes the first detection group 6 and the second detection group 7, and the first detection group 6 and the second detection group 7 are arranged at intervals along the movement path of the pole piece. The first detection group 6 can perform detection on one needle on the pole piece, and then the second detection group 7 can perform secondary detection on the needle, thereby improving the accuracy of the contact resistance detection of the needle. The first detection group 6 can also detect the contact resistance of part of the needles on the pole piece, and the second detection group 7 can detect the contact resistance of another part of the needles on the pole piece at the same time. The first detection group 6 and the second detection group 7 work simultaneously, thereby improving the overall detection efficiency.

[0037] Further, the first adjusting mechanism 4 is arranged between the first detection group 6 and the second detection group 7, and when the gauge of the pole piece is changed to cause the distance between the guide needles on the pole piece to change, the length of the pole piece between the first detection group 6 and the second detection group 7 can be adjusted by the first adjusting mechanism 4, so that the distance between the first detection group 6 and the second detection group 7 along the movement path of the pole piece matches the distance between the guide needles on the pole piece, and thus when one of the guide needles on the pole piece is located at a position matched with the first detection group 6 (i.e. directly opposite the detection part on the first detection group 6), the other guide needle on the pole piece is also located at a position matched with the second detection group 7 (i.e. directly opposite the detection part on the second detection group 7), and the two guide needles can be adjacent or can be separated by several other guide needles. Thus, when the first detection group 6 is working, the second detection group 7 can also work at the same time, the efficiency of the guide needle resistance detection is improved, and the applicability of the device is also improved.

[0038] In one embodiment, referring to Figure 1 The second adjusting mechanism 5 is arranged between the second detection group 7 and the winding mechanism 3, and is used to adjust the length of the pole piece between the second detection group 7 and the winding mechanism 3, so that the distance between the second detection group 7 and the winding mechanism 3 along the movement path of the pole piece matches the distance between the guide needles. Specifically, the second adjusting mechanism 5 refers to a component or assembly used to adjust the length of the pole piece along the movement path of the pole piece. In this embodiment, along the movement path of the pole piece, the second adjusting mechanism 5 is arranged between the second detection group 7 and the winding mechanism 3, and can adjust the length of the pole piece between the second detection group 7 and the winding mechanism 3, so that the distance between the second detection group 7 and the winding mechanism 3 along the movement path of the pole piece matches the distance between the guide needles, and thus when the winding mechanism 3 completes one winding process, one of the guide needles is also located at a position matched with the second detection group 7, i.e. directly opposite the detection part on the second detection group 7. When the gauge of the pole piece is changed to cause the distance between the guide needles on the pole piece to change, the length of the pole piece between the second detection group 7 and the winding mechanism 3 can be adjusted to ensure that when the winding mechanism 3 stops working for one winding process, one of the guide needles is always arranged opposite the second detection group 7, and thus the applicability of the device is improved.

[0039] In one embodiment, referring to Figure 5, the first adjusting mechanism 4 and the second adjusting mechanism 5 each comprise a fixed roller shaft 41, a movable roller shaft 42 and a translation assembly 43, the movable roller shaft 42 and the fixed roller shaft 41 are arranged in parallel and are provided with a winding pole, the movable roller shaft 42 has a degree of freedom of moving along a direction perpendicular to its own axis relative to the fixed roller shaft 41, and the translation assembly 43 is used for adjusting the distance between the movable roller shaft 42 and the fixed roller shaft 41. Specifically, the translation assembly 43 refers to a component or assembly used for adjusting the position of an object. The fixed roller shaft 41 and the movable roller shaft 42 are both shaft-like components with a certain diameter, the position of the fixed roller shaft 41 is relatively fixed, but the fixed roller shaft 41 can be rotatably arranged on a support plate. The movable roller shaft 42 can be rotatably arranged on the adjusting end of the translation assembly 43. In the embodiment, by arranging the movable roller shaft 42 and the fixed roller shaft 41 in parallel and arranging the movable roller shaft 42 to have a degree of freedom of moving along a direction perpendicular to its own axis relative to the fixed roller shaft 41, the winding pole can be wound around the movable roller shaft 42 and the fixed roller shaft 41 respectively in use, when it is necessary to increase the length of the winding pole wound around the first adjusting mechanism 4 or the second adjusting mechanism 5, the distance between the movable roller shaft 42 and the fixed roller shaft 41 can be increased by the translation assembly 43, so that the movable roller shaft 42 and the fixed roller shaft 41 can wind a longer winding pole. When it is necessary to reduce the length of the winding pole wound around the first adjusting mechanism 4 or the second adjusting mechanism 5, the distance between the movable roller shaft 42 and the fixed roller shaft 41 can be reduced by the translation assembly 43, so that the movable roller shaft 42 and the fixed roller shaft 41 can wind a shorter winding pole. By adopting the above structure, the length of the winding pole between the two components can be adjusted more conveniently.

[0040] In an optional embodiment, referring to Figure 5 , the number of the fixed roller shaft 41 and the movable roller shaft 42 can be multiple, the multiple movable roller shafts 42 can be arranged in a first direction, the multiple fixed roller shafts 41 can also be arranged in the first direction, and the movable roller shaft 42 and the fixed roller shaft 41 can be arranged in a second direction, the first direction and the second direction are arranged at an angle. By arranging multiple movable roller shafts 42 and multiple fixed roller shafts 41, more winding poles can be wound on the first adjusting mechanism 4 or the second adjusting mechanism 5, and when the movable roller shaft 42 moves relative to the fixed roller shaft 41, the adjustment speed of the length of the winding pole is faster, and the adjustment efficiency is improved.

[0041] In an embodiment, referring to Figure 5The translation assembly 43 comprises a sliding support 431 and a translation slider 432. The movable roller shaft 42 is rotatably arranged on the translation slider 432. The sliding support 431 is provided with a sliding structure 433. The translation slider 432 is slidably connected to the sliding support 431 through the sliding structure 433, and the position of the movable roller shaft 42 is adjusted by the movement of the translation slider 432. Specifically, the sliding support 431 refers to a support component with a certain length. The sliding support 431 can be block-shaped, plate-shaped, or a combination of multiple shapes. The translation slider 432 refers to a component with a certain volume. The translation slider 432 can be block-shaped, plate-shaped, or a combination of multiple shapes. The sliding structure 433 refers to a component or assembly that can slidably connect two objects. The sliding structure 433 can be a sliding block guide structure, a roller guide structure, or the like. In this embodiment, the translation slider 432 is slidably connected to the sliding support 431 through the sliding structure 433. The movable roller shafts are all arranged on the translation slider 432. When the position of the movable roller shaft needs to be adjusted, the position of the movable roller shaft 42 can be adjusted by moving the translation slider 432, making the position adjustment of the movable roller shaft 42 more convenient and fast.

[0042] In one embodiment, referring to Figure 5 The sliding structure 433 comprises a sliding groove 4331 arranged on the sliding support 431. An adjusting pin 434 is arranged in the sliding groove 4331 and can slide along the length direction of the sliding groove 4331. One end of the adjusting pin 434 is movably connected to the translation slider 432, and the other end abuts against one side of the sliding support 431 away from the translation slider 432. Specifically, the sliding groove 4331 refers to a through groove structure with a certain length. The adjusting pin 434 refers to a columnar structure with a certain length. In this embodiment, one end of the adjusting pin 434 is movably connected to the translation slider 432, and the other end abuts against one side of the sliding support 431 away from the translation slider 432. When the position of the translation slider 432 needs to be adjusted, the position of the adjusting pin 434 can be adjusted so that the end of the adjusting pin 434 is away from the sliding support 431, so that the adjusting pin 434 and the translation slider 432 can slide along the length direction of the sliding groove 4331. After the position adjustment is completed, the position of the adjusting pin 434 can be adjusted so that the end of the adjusting pin 434 abuts against one side of the sliding support 431 away from the translation slider 432, thereby fixing the translation slider 432. The cooperation of the sliding groove 4331 and the adjusting pin 434 makes the position adjustment and fixation of the translation slider 432 more convenient.

[0043] In an optional embodiment, referring to Figure 5The adjusting pin 434 is threadedly connected with the translation slide 432. Specifically, a mounting hole is arranged on the translation slide 432 for accommodating the adjusting pin 434, and threads are arranged on the inner wall of the mounting hole and the outer portion of the adjusting pin 434, so that the adjusting pin 434 can be threadedly connected with the translation slide 432. By threadedly connecting the adjusting pin 434 with the translation slide 432, when it is needed to adjust the relative position between the translation slide 432 and the adjusting pin 434, only the adjusting pin 434 needs to be rotated to realize the position adjustment of the adjusting pin 434 in the direction along the axis thereof.

[0044] In one embodiment, referring to Figure 3 The first detection group 6 and the second detection group 7 each include a detection bracket 61, a detection slide 62, a driving unit 63, a resistance detection unit 64, and a resistance test vice 65. The detection slide 62 is movably arranged on the detection bracket 61, and the resistance test vice 65 is oppositely arranged with the detection slide 62. The resistance test vice 65 and the detection slide 62 are respectively located on two sides of the pole piece. The driving unit 63 is arranged on the detection bracket 61, and a driving end is connected with the detection slide 62. The driving unit 63 is used for driving the detection slide 62 to approach or move away from the resistance test vice 65. The resistance detection unit 64 is arranged on the side of the detection slide 62 facing the resistance test vice 65.

[0045] Specifically, the detection bracket 61 refers to a support component with a certain height. The detection bracket 61 can be block-shaped, plate-shaped, or combined in multiple shapes. The detection slide 62 refers to a component with a certain volume. The detection slide 62 is usually block-shaped or plate-shaped. The driving unit 63 refers to a component or assembly used for driving a body to move in a straight line direction. The driving unit 63 can be a pneumatic cylinder, a hydraulic cylinder, or an electric push rod, etc. The body of the driving unit 63 can be fixed on the detection bracket 61, and the driving end is connected with the detection slide 62. The resistance detection unit 64 refers to an electrical component used for detecting the contact resistance of the guide needle. The resistance detection unit 64 can be a resistance test electrode. The detection slide 62 is usually an insulating material component, which can electrically isolate the resistance detection unit 64, so that the use of the resistance detection unit 64 is safer. The resistance test vice 65 refers to a component with a certain volume. The resistance test vice 65 can be block-shaped, plate-shaped, or combined in multiple shapes. The resistance test vice 65 usually has a support plane thereon.

[0046] In the embodiment, by arranging the detection slider 62 and the resistance testing sub 65 on two sides of the pole piece respectively, when the contact resistance of the guide needle needs to be detected, the detection slider 62 can be driven by the driving unit 63 to approach the resistance testing sub 65, and the pole piece and the guide needle are pressed on the resistance testing sub 65, so that the resistance detection unit 64 can contact the guide needle to measure the contact resistance, and when the measurement is not needed, the detection slider 62 is driven by the driving unit 63 to move away from the resistance testing sub 65, so that the pole piece can move normally. The measurement of the contact resistance is more convenient.

[0047] In one embodiment, referring to Figure 3 , the resistance testing sub 65 includes a supporting plate 653, a resistance testing sheet 651, and an insulating pad 652. The resistance testing sheet 651 is arranged on the side of the supporting plate 653 facing the detection slider 62, and the insulating pad 652 is arranged between the resistance testing sheet and the supporting plate 653. Specifically, the supporting plate 653 refers to a plate-shaped component with a certain volume. The resistance testing sheet 651 refers to a plate-shaped or sheet-shaped component with a certain area. The resistance testing sheet 651 can also function as a resistance testing component, and can be measured simultaneously with the resistance detection unit 64, thereby functioning as a check or ensuring continuous measurement when the resistance detection unit 64 fails. The insulating pad 652 refers to an insulating component with a certain volume. In the embodiment, by arranging the insulating component 652 between the resistance testing sheet 651 and the supporting plate 653, the phenomenon of electric leakage of the resistance testing sheet 651 during operation can be avoided, and the use of the resistance testing sheet is safer.

[0048] In an optional embodiment, referring to Figure 3 , a guide structure 66 can also be arranged between the detection slider 62 and the detection bracket 61. The guide structure 66 includes a linear bearing arranged on the detection bracket 61 and a guide column connected at one end to the detection slider 62 and slidingly inserted into the linear bearing at the other end. By arranging the guide structure 66, the sliding of the detection slider 62 is more stable, and the accuracy of the contact resistance detection of the guide needle is improved.

[0049] In one embodiment, referring to Figure 4 , the resistance detection unit 64 has a testing plane for abutting against the guide needle. Specifically, the testing plane refers to a planar structure with a certain area. By arranging the testing plane on the resistance detection unit 64, the contact area between the resistance detection unit 64 and the guide needle is increased, thereby improving the stability of the resistance detection unit 64 during measurement and improving the accuracy of the measurement.

[0050] The above are only preferred embodiments of the present application, and only the technical principles of the present application are specifically described, and these descriptions are only for explaining the principles of the present application, and cannot be interpreted as limiting the protection scope of the present application in any way. Based on the explanation herein, any modification, equivalent replacement and improvement made within the spirit and principles of the present application, and other specific embodiments of the present application that can be conceived by those skilled in the art without creative labor, should be included in the protection scope of the present application.

Claims

1. A needle crimping resistance on-line testing device for a needle crimping winder, for detecting the resistance of a tab, characterized in that, The resistance value detection mechanism, the cutting mechanism and the winding mechanism are arranged along the movement path of the electrode sheet, the winding mechanism is used for winding the electrode sheet, the cutting mechanism is used for cutting the electrode sheet from a preset position after the winding mechanism completes the winding of the electrode sheet, and the resistance value detection mechanism is used for contacting the tab of the electrode sheet before the cutting mechanism cuts the electrode sheet and detecting the resistance value of the tab.

2. The pin tacking and winding machine guide pin tacking resistance on-line testing device according to claim 1, characterized in that, The signal output end of the resistance value detection mechanism is electrically connected with the resistance value display unit, the resistance value display unit is used for displaying the resistance value of the tab, and the resistance value display unit is electrically connected with the control unit.

3. The pin tacking and winding machine guide pin tacking resistance on-line testing device according to claim 1 or 2, characterized in that, The resistance value detection mechanism comprises a first detection group and a second detection group, the first detection group and the second detection group are arranged at intervals along the movement path of the electrode sheet, a first adjusting mechanism is arranged between the first detection group and the second detection group along the movement path of the electrode sheet, and the first adjusting mechanism is used for adjusting the length of the electrode sheet between the first detection group and the second detection group, so that the interval between the first detection group and the second detection group along the movement path of the electrode sheet matches the interval of the tabs on the electrode sheet.

4. The pin tacking and winding machine guide pin tacking resistance on-line testing device of claim 3, wherein, A second adjusting mechanism is arranged between the second detection group and the winding mechanism, and the second adjusting mechanism is used for adjusting the length of the electrode sheet between the second detection group and the winding mechanism, so that the interval between the second detection group and the winding mechanism along the movement path of the electrode sheet matches the interval of the tabs.

5. The pin tacking and winding machine guide pin tacking resistance on-line testing device of claim 4, wherein, The first adjusting mechanism and the second adjusting mechanism each comprise a fixed roller shaft, a movable roller shaft and a translation assembly, the movable roller shaft and the fixed roller shaft are arranged around the electrode sheet, the movable roller shaft and the fixed roller shaft are arranged in parallel, the movable roller shaft has a degree of freedom of moving along a direction perpendicular to the axis of the movable roller shaft relative to the fixed roller shaft, and the translation assembly is used for adjusting the interval between the movable roller shaft and the fixed roller shaft.

6. The pin tacking and winding machine guide pin tacking resistance on-line testing device of claim 5, wherein, The translation assembly comprises a sliding support and a translation slider, the movable roller shaft is rotationally arranged on the translation slider, the sliding support is provided with a sliding structure, the translation slider is slidably connected with the sliding support through the sliding structure, and the position of the movable roller shaft is adjusted through the movement of the translation slider.

7. The pin tacking and winding machine guide pin tacking resistance on-line testing device of claim 6, wherein, The sliding structure comprises a sliding groove arranged on the sliding support, an adjusting pin slidably arranged along the length direction of the sliding groove is arranged in the sliding groove, one end of the adjusting pin is movably connected with the translation slider, and the other end of the adjusting pin abuts against one side of the sliding support away from the translation slider.

8. The pin tacking and winding machine guide pin tacking resistance on-line testing device of claim 5, wherein, The number of the fixed roller shafts and the movable roller shafts is plural, the plurality of movable roller shafts are arranged at intervals along a first direction, the plurality of fixed roller shafts are arranged at intervals along the first direction, and the fixed roller shafts and the movable roller shafts are arranged at intervals along a second direction, and the first direction and the second direction are arranged at an angle.

9. The pin tacking and winding machine guide pin tacking resistance on-line testing device of claim 3, wherein, The first detection group and the second detection group each include a detection support, a detection slider, a driving unit, a resistance detection unit, and a support part, the detection slider is movably arranged on the detection support, the support part is arranged opposite to the detection slider, the support part and the detection slider are respectively located on two sides of the pole piece, the driving unit is arranged on the detection support, and a driving end is connected with the detection slider, the driving unit is used for driving the detection slider to move close to or away from the support part, and the resistance detection unit is arranged on a side of the detection slider facing the support part.

10. The pin tacking and winding machine guide pin tacking resistance on-line testing device of claim 9, wherein, The resistance detection unit has a test plane, and the test plane is used for abutting against the tab.

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