Ejector pin tool for helium detection process of new energy battery cover plate and helium detection machine

Abstract

The invention discloses an ejector pin tool for a helium detection procedure of a new energy battery cover plate and a helium detection machine, and relates to the field of battery cover plate detection, the ejector pin tool comprises a detection base, two groups of detection grooves are symmetrically formed in the detection base, and lower positioning molds for positioning the battery cover plate are embedded in the detection grooves; the detection base is fixed to a top plate through a connecting shaft, a lifting module corresponding to the detection groove is correspondingly and fixedly arranged on the top plate in the direction facing the detection base, the driving end of the lifting module is fixed to an upper positioning mold, and a detection cavity is formed in the upper positioning mold in the direction facing the detection base; when the lifting module drives the upper positioning mold to descend, the ejector pin structure is synchronously driven to move in the moving process of the upper positioning mold, the ejector pin structure firstly makes contact with the battery cover plate, the battery cover plate is pressed and fixed through the ejector pin structure along with continuous descending of the upper positioning mold, and ejector pin marks are formed on the battery cover plate.

Description

Technical Field

[0001] The present invention relates to the field of battery cover plate inspection, and in particular to an ejector tool and a helium inspection machine used in a helium inspection process of a new energy battery cover plate. Background Art

[0002] During the production of new energy batteries (such as lithium batteries), covers play a crucial role in sealing the battery interior and connecting the battery electrodes. Their sealing properties are crucial to battery safety and performance. In the production of new energy battery covers, helium is filled to a certain pressure, and then specialized testing equipment is used to detect helium leaks to determine whether the cover's sealing performance meets requirements. This tooling is specifically designed for this specific testing process.

[0003] Ejectors are typically needle-like components of a specific shape and hardness, often used in industrial production for positioning, support, or pressure applications. In this tooling, the ejector pins play a key role, likely holding the battery cover in place to achieve positioning, fixation, or form a sealed chamber during testing.

[0004] Currently, after the battery cover is positioned, it can be enclosed with the detection support to form a sealed chamber. The sealing of the battery cover can be tested by supplying helium to the sealed chamber. However, in actual application, when helium is supplied to the sealed chamber, it is easy to lift the battery cover due to the increase in pressure in the sealed chamber, which in turn causes a leakage gap between the battery cover and the detection support, affecting the test results. Summary of the Invention

[0005] The present invention provides a pin tool for the helium inspection process of new energy battery cover plates, which can solve the problem in the prior art: when helium is transported to a sealed chamber, the battery cover plate is easily lifted up due to the pressure increase in the sealed chamber, which in turn causes a leakage gap between the battery cover plate and the inspection support, affecting the inspection results.

[0006] An ejector tooling for the helium inspection process of new energy battery cover plates, comprising a detection base, on which two sets of detection grooves are symmetrically opened, and a lower positioning mold for positioning the battery cover plate is embedded in the detection grooves;

[0007] The detection base is fixed to the top plate via a connecting shaft, and a lifting module corresponding to the detection groove is fixedly arranged on the top plate toward the detection base. The driving end of the lifting module is fixed to the upper positioning mold, and the upper positioning mold is provided with a detection cavity toward the detection base.

[0008] Among them, a reserved groove is opened in the upper positioning mold, and a first spring is fixedly arranged in the reserved groove. The other end of the first spring is fixed to the ejector structure slidably arranged in the reserved groove, and the ejector structure extends to the bottom of the upper positioning mold.

[0009] A helium inspection machine for the helium inspection process of new energy battery cover plates includes the above-mentioned ejector tooling for the helium inspection process of new energy battery cover plates, and also includes two sets of spacers fixedly arranged in the lower positioning mold, so as to separate the lower positioning mold into a first cavity, a second cavity and a third cavity. The first cavity, the second cavity and the third cavity are respectively used to embed the protruding structures provided on the lower surface of the battery cover plate.

[0010] Preferably, three groups of air holes are respectively opened at the bottom of the detection groove, and the three groups of air holes correspond to the first cavity, the second cavity and the third cavity respectively. The bottom of the detection grooves on both sides are respectively provided with first air channels connected to the three groups of air holes.

[0011] Preferably, the detection base is further provided with a second air channel connected to the first air channels on both sides, an air pipe is fixedly arranged at the bottom of the detection base, the second air channel is connected to the air pipe through an air inlet, and the other end of the air pipe is connected to the helium storage tank through an air pump.

[0012] Preferably, a conveyor belt for conveying the battery cover is provided on one side of the detection base, and a removal module is provided on the conveyor belt, and the removal module is used to alternately load and unload the battery cover.

[0013] Preferably, two groups of sealing rods are symmetrically and slidingly arranged in the second air duct, and the sealing rods slide and fit with the side wall of the second air duct. The side of the two groups of sealing rods close to each other is connected to the air intake pipe, and the air intake pipe is symmetrically provided with a first air hole for communicating with the first air duct on the side close to the sealing rod. A second air hole is also provided on the air intake pipe, and the second air hole is used to communicate with the air supply hole in the middle position.

[0014] Preferably, the detection base is further provided with two sets of adjustment mechanisms, and the two sets of adjustment mechanisms are respectively used to drive the sealing rod to slide in the second air channel.

[0015] Preferably, an adjustment plate is fixedly arranged on one end of the sealing rod away from the air inlet pipe, and both ends of the adjustment plate are respectively slidably sleeved on a support shaft, the support shaft is fixed to the detection base, a second spring is provided on the support shaft, one end of the second spring is fixed to the adjustment plate, and the other end is fixed to the end of the support shaft, and a wedge-shaped seat is fixedly arranged on the side of the adjustment plate away from the detection base, and an inclined guide surface is provided on the wedge-shaped seat;

[0016] Wherein, the adjustment mechanism includes an adjustment frame fixed to one side of the lower positioning mold, and a guide wheel corresponding to the inclined guide surface is rotatably arranged on one side of the bottom of the adjustment frame.

[0017] Preferably, a first air outlet pipe communicating with the first air channel is fixedly arranged on the detection base, and a terminal end of the first air outlet pipe is connected to the air storage tank via an air pump.

[0018] Preferably, an exhaust hole is provided on the upper positioning mold, the exhaust hole is connected to a second air outlet pipe fixedly arranged on the upper positioning mold through a fifth air duct, and the end of the second air outlet pipe is connected to the air storage tank through an air pump.

[0019] Preferably, the removal module includes a support plate arranged on the conveyor belt, the support plate is fixed on the support frame, and a gear is arranged on the support plate to rotate on the side of the conveyor belt. The gear is fixed to the driving end of the servo motor fixed on the support plate, and two sets of racks are arranged on both sides of the gear in parallel and staggered manner. Both sets of racks are engaged with the gear, and a positioning plate is fixed on one side of the rack, and a lifting electric cylinder is fixed on the positioning plate. The driving end of the lifting electric cylinder is fixed to the removal plate arranged at the bottom of the positioning plate, and two sets of suction cups are arranged on the side of the removal plate toward the conveyor belt, and the suction cups are connected to the suction pump arranged on the positioning plate.

[0020] The present invention provides a thimble tooling for the helium inspection process of new energy battery cover plates:

[0021] 1) When the lifting module of the present invention drives the upper positioning mold to descend, the ejector structure is synchronously driven to move during the movement of the upper positioning mold. The ejector structure first contacts the battery cover. As the upper positioning mold continues to descend, the battery cover is pressed and fixed by the ejector structure, and an ejector mark is formed on the battery cover. During this process, the first spring contracts and generates elastic force until the upper positioning mold and the lower positioning mold are completely fitted together. When the detection is completed, as the upper positioning mold resets and rises, the first spring can synchronously drive the ejector structure to reset. The ejector structure of this embodiment can effectively improve the detection accuracy;

[0022] 2) In the initial state of the present invention, the first air holes on the two sets of sealing rods are in a misaligned state with the first air channel, and the second air holes are also in a misaligned state with the air supply hole in the middle position. When the battery cover is loaded onto the detection groove, the present invention can drive the sealing rod at the bottom of the detection groove of the group to slide in the first air channel through the adjustment mechanism, so that the first air hole on one side of the sealing rod is connected to the first air channel, and the second air hole is connected to the air supply hole in the middle position. Therefore, when helium is transported to the second air channel through the air supply pipe and the air inlet hole, the helium will be transported to the first cavity, the second cavity and the third cavity in sequence along the air inlet pipe, the first air hole and the second air hole on one side of the sealing rod. The first air hole on the sealing rod at the bottom of the detection groove on the other side is in a misaligned state with the first air channel, and the second air hole is also in a misaligned state with the air supply hole in the middle position. Therefore, helium cannot enter the first cavity, the second cavity and the third cavity of the detection groove on this side, so as to avoid mutual interference during detection;

[0023] 3) When the lifting module of the present invention drives the upper positioning mold to descend, the upper positioning mold synchronously drives the guide wheel to descend through the adjustment frame. When the guide wheel contacts the inclined guide surface, as the guide wheel continues to descend, the wedge seat can be pushed to move toward the detection base. The wedge seat synchronously drives the sealing rod to slide until the upper positioning mold and the lower positioning mold are fitted together. The first air hole is connected to the first air duct, and the second air hole is connected to the air supply hole in the middle position. Correspondingly, as the lifting module drives the upper positioning mold to reset, the second spring can synchronously drive each component to reset. The present invention does not need to set up other servo drive equipment to drive the sealing rod to move. As the lifting module drives the upper positioning mold to descend, the effect of automatically adjusting the air duct can be achieved, and the synchronization and stability are higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic structural diagram of a helium inspection machine for a new energy battery cover plate helium inspection process provided by the present invention;

[0025] Figure 2 This is a structural schematic diagram of a detection base in a helium inspection machine used in a helium inspection process for new energy battery cover plates provided by the present invention;

[0026] Figure 3 This is a structural schematic diagram of a removal module in a helium inspection machine used in a helium inspection process for new energy battery cover plates provided by the present invention;

[0027] Figure 4 This is a structural schematic diagram of the first gas outlet pipe in a helium inspection machine for a new energy battery cover plate helium inspection process provided by the present invention;

[0028] Figure 5 A schematic structural diagram of a battery cover plate in a helium inspection machine for a new energy battery cover plate helium inspection process provided by the present invention;

[0029] Figure 6 This is a schematic diagram of the structure of a gas pipe in a helium inspection machine used in the helium inspection process of a new energy battery cover provided by the present invention;

[0030] Figure 7 This is a schematic diagram of the structure of the air inlet in a helium inspection machine used in the helium inspection process of a new energy battery cover provided by the present invention;

[0031] Figure 8 A schematic structural diagram of a sealing rod in a helium inspection machine for a new energy battery cover plate helium inspection process provided by the present invention;

[0032] Figure 9 This is a schematic structural diagram of a cross-section of a detection base in a helium inspection machine used in a helium inspection process for a new energy battery cover provided by the present invention;

[0033] Figure 10This is a schematic structural diagram of a cavity in a helium inspection machine used in the helium inspection process of new energy battery cover plates provided by the present invention.

[0034] Description of reference numerals:

[0035] 1. Conveyor belt; 2. Detection base; 3. Support plate; 4. Adjustment plate; 5. Battery cover; 6. Air pipe; 7. Sealing rod; 201. Connecting shaft; 202. Top plate; 203. Lifting module; 204. Upper positioning mold; 205. Detection groove; 206. Air hole; 207. First air outlet pipe; 208. Second air outlet pipe; 209. Lower positioning mold; 210. Adjustment frame; 211. Guide wheel; 212. Exhaust hole; 301. Gear; 302. Servo motor; 303. Rack; 304. Guide rod; 305. Support; 306. Positioning plate; 307. Removal plate; 308. Suction cup; 309. Suction pump; 310. Lifting electric cylinder; 311. Support frame; 401. Wedge-shaped seat; 402. Inclined guide surface; 403. Support shaft; 404. Second spring; 601. Detection cavity; 602. Reserved groove; 603. First spring; 604. Ejector pin structure; 605. Spacer; 606. Third cavity; 607. First air duct; 608. First cavity; 609. Second cavity; 701. First air hole; 702. Second air hole; 703. Air inlet hole; 704. Second air duct; 705. Air inlet pipe. DETAILED DESCRIPTION

[0036] The specific embodiments of the present invention are described in detail below, but it should be understood that the protection scope of the present invention is not limited by the specific embodiments.

[0037] Example 1

[0038] like Figure 1-Figure 2 、 Figure 4-Figure 5 as well as Figure 9-10 As shown, An embodiment of the present invention provides a pin tool for the helium inspection process of new energy battery cover plates, including a detection base 2, on which two groups of detection grooves 205 are symmetrically opened, and a lower positioning mold 209 for positioning the battery cover plate 5 is embedded in the detection groove 205; specifically, in this embodiment, when the battery cover plate 5 is subjected to airtightness inspection, the battery cover plate 5 is first positioned on the lower positioning mold 209 for pre-positioning. In this embodiment, the structure of the lower positioning mold 209 can be set accordingly based on the model of the battery cover plate 5. When the battery cover plate 5 is positioned on the lower positioning mold 209, the bottom surface structures of the battery cover plate 5 are completely fitted with the surface of the lower positioning mold 209 to improve the sealing of the battery cover plate 5 when it is positioned.

[0039] In addition, this embodiment can effectively improve the detection efficiency by providing two groups of detection grooves 205 for alternating detection.

[0040] In this embodiment, the detection base 2 is fixed to the top plate 202 by a connecting shaft 201, and the top plate 202 is fixedly provided with a lifting module 203 corresponding to the detection groove 205 in the direction of the detection base 2. The driving end of the lifting module 203 is fixed to the upper positioning mold 204, and the upper positioning mold 204 is provided with a detection cavity 601 in the direction of the detection base 2. Specifically, in this embodiment, by setting the upper positioning mold 204, when the battery cover 5 is positioned on the lower positioning mold 209, the upper positioning mold 205 is driven by the lifting module 203. 04 moves toward the detection base 2 so that the upper positioning mold 204 can be covered on the battery cover 5, and the upper positioning mold 204 can be completely fitted with the surface of the lower positioning mold 209 to further improve the sealing effect. Accordingly, when the battery cover 5 leaks, helium will pass through the battery cover 5 into the detection cavity 601. In this embodiment, a detector for detecting helium leakage can be set in the detection cavity 601. When the detector detects helium, it indicates that the battery cover 5 is leaking. Otherwise, it indicates that the battery cover 5 is not leaking.

[0041] It should be noted that the detector of this embodiment can be an XP-3140 model detector, or other models, without limitation.

[0042] A reserved groove 602 is provided in the upper positioning mold 204, in which a first spring 603 is fixedly arranged. The other end of the first spring 603 is fixed to an ejector structure 604 slidably arranged in the reserved groove 602, and the ejector structure 604 extends to the bottom of the upper positioning mold 204;

[0043] It can be explained that when the lifting module 203 of this embodiment drives the upper positioning mold 204 to descend, the ejector structure 604 is synchronously driven to move during the movement of the upper positioning mold 204. The ejector structure 604 first contacts the battery cover 5. As the upper positioning mold 204 continues to descend, the battery cover 5 is pressed and fixed by the ejector structure 604, and an ejector mark is formed on the battery cover 5. During this process, the first spring 603 contracts and generates elastic force until the upper positioning mold 204 is completely fitted with the lower positioning mold 209. When the detection is completed, as the upper positioning mold 204 resets and rises, the first spring 603 can synchronously drive the ejector structure 604 to reset. The ejector structure 604 of this embodiment can effectively improve the detection accuracy.

[0044] In this embodiment, the lifting module 203 can be driven by a pneumatic cylinder or an electric cylinder, which is not limited in this embodiment, and can be used to actually drive the upper positioning mold 204 to lift.

[0045] Example 2

[0046] A helium inspection machine for a new energy battery cover plate helium inspection process, including a thimble tooling for a new energy battery cover plate helium inspection process in Example 1, see Figure 10 When the ejector structure 604 applies pressure to the battery cover 5, in order to prevent the ejector structure 604 from bending the battery cover 5, the present embodiment further includes two sets of spacers 605 fixedly arranged in the lower positioning mold 209, so as to separate the lower positioning mold 209 into a first cavity 608, a second cavity 609 and a third cavity 606, and the first cavity 608, the second cavity 609 and the third cavity 606 are respectively used to embed the protruding structures provided on the lower surface of the battery cover 5; specifically, the two sets of spacers 605 provided in the present embodiment can support the middle position of the battery cover 5, and when the ejector structure 604 applies pressure to the battery cover 5, the battery cover 5 is prevented from bending and deforming;

[0047] Accordingly, this embodiment can set the positions of the first cavity 608, the second cavity 609 and the third cavity 606 based on the leakage-prone position of the battery cover 5, so that each cavity can correspond to the leakage-prone position respectively to avoid missed detection.

[0048] See also Figure 2 、 Figure 4 as well as Figure 6-Figure 7 The bottom of the detection groove 205 is provided with three groups of gas delivery holes 206, which correspond to the first cavity 608, the second cavity 609 and the third cavity 606 respectively. The bottom of the detection grooves 205 on both sides are provided with first air channels 607 connected to the three groups of gas delivery holes 206. The detection base 2 is also provided with second air channels 704 connected to the first air channels 607 on both sides. The bottom of the detection base 2 is fixed with an air delivery pipe 6, and the second air channel 704 is connected to the air delivery pipe 6 through the air inlet 703. The other end of the air pipe 6 is connected to the helium storage tank through an air pump; it can be explained that, in this embodiment, when testing the sealing of the battery cover 5, the helium in the helium storage tank is first extracted by the air pump, and then transported to the second air duct 704 through the air supply pipe 6 and the air inlet 703. The helium in the second air duct 704 can enter the first air duct 607, and finally enter the first cavity 608, the second cavity 609 and the third cavity 606 through the three groups of air supply holes 206 to realize the airtightness detection of the battery cover 5.

[0049] In this embodiment, please refer to Figure 1-Figure 3In order to realize the alternating detection of the two groups of detection grooves 205, a conveyor belt 1 for conveying the battery cover 5 is provided on one side of the detection base 2, and a removing module is provided on the conveyor belt 1, which is used to alternately load and unload the battery cover 5; specifically, in this embodiment, a loading robot can be set at the starting end of the conveyor belt 1, and the loading robot can grab two groups of battery cover plates 5 at a time and place them on the conveyor belt 1, and then start the conveyor belt 1, and the conveyor belt 1 conveys the battery cover plates 5 toward the detection base 2. When it is transported to the position of the detection base 2, the upper positioning mold 204 is first driven to rise to a certain height by the lifting modules 203 on both sides, and then the removing module is used to grab the battery cover plates 5. One group of battery cover plates 5 is loaded into the detection groove 205, and then the removal module is reset, and the lifting module 203 drives the upper positioning mold 204 to descend to fit with the lower positioning mold 209 for air tightness testing. During this process, the removal module grabs another group of battery cover plates 5 and loads them into the detection groove 205 on the other side to achieve the effect of alternating loading. When the inspection is completed, the alternating unloading method is also adopted. The tested battery cover plates 5 are taken out by the removal module and replaced on the conveyor belt 1. The battery cover plates 5 after the inspection are output through the conveyor belt 1, and the unloading robot moves the qualified and unqualified battery cover plates 5 to the corresponding storage positions.

[0050] Specifically, this embodiment detects the airtightness of the battery cover plates 5 alternately, which can effectively avoid the mutual interference between the two groups of battery cover plates 5 when detecting them, compared with synchronous detection.

[0051] As a further solution of this embodiment, please refer to Figure 6-Figure 8When a group of battery cover plates 5 are tested in the detection groove 205, in order to prevent helium from being discharged from the detection groove 205 on the other side, two groups of sealing rods 7 are symmetrically arranged in the second air channel 704. The sealing rods 7 slide and fit with the side wall of the second air channel 704. The side close to the two groups of sealing rods 7 is connected to the air inlet pipe 705. The air inlet pipe 705 is symmetrically provided with a first air hole 701 for communicating with the first air channel 607 on the side close to the sealing rod 7. The air inlet pipe 705 is also provided with a second air hole 701. The second air hole 702 is used to communicate with the air delivery hole 206 in the middle position, wherein the detection base 2 is further provided with two sets of adjustment mechanisms, and the two sets of adjustment mechanisms are used to drive the sealing rod 7 to slide in the second air channel 704; it can be explained that in the initial state, the first air hole 701 on the two sets of sealing rods 7 is in a misaligned state with the first air channel 607, and the second air hole 702 is also in a misaligned state with the air delivery hole 206 in the middle position. When the battery cover 5 is loaded onto the detection recess When the detection groove 205 is formed, the sealing rod 7 at the bottom of the detection groove 205 can be driven by the adjustment mechanism to slide in the first air channel 607, so that the first air hole 701 on one side of the sealing rod 7 is connected to the first air channel 607, and the second air hole 702 is connected to the air delivery hole 206 in the middle position. Therefore, when the helium is transported from the air delivery pipe 6 and the air inlet hole 703 to the second air channel 704, the helium will flow along the air inlet pipe 705 on one side of the sealing rod 7, the first air hole 701 and the second air hole 702. 02 is sequentially delivered to the first cavity 608, the second cavity 609 and the third cavity 606, while the first air hole 701 on the sealing rod 7 at the bottom of the detection groove 205 on the other side is misaligned with the first air channel 607, and the second air hole 702 is also misaligned with the air delivery hole 206 in the middle position. Therefore, helium cannot enter the first cavity 608, the second cavity 609 and the third cavity 606 of the detection groove 205 on this side, so as to avoid mutual interference during detection.

[0052] In this embodiment, please refer to Figure 2 as well as Figure 6-Figure 8, the end of the sealing rod 7 away from the air inlet pipe 705 is fixed with an adjusting plate 4, and the two ends of the adjusting plate 4 are respectively slidably sleeved on the support shaft 403, the support shaft 403 is fixed to the detection base 2, and a second spring 404 is provided on the support shaft 403, one end of the second spring 404 is fixed to the adjusting plate 4, and the other end is fixed to the end of the support shaft 403, and a wedge-shaped seat 401 is fixed on the side of the adjusting plate 4 away from the detection base 2, and an inclined guide surface 402 is provided on the wedge-shaped seat 401, wherein the adjusting mechanism includes an adjusting frame 210 fixed to one side of the lower positioning mold 209, and a guide wheel 211 corresponding to the inclined guide surface 402 is rotatably provided on one side of the bottom of the adjusting frame 210; it can be explained that when the lifting module 203 of this embodiment drives the upper positioning mold 204 to descend, the upper positioning mold 204 passes through the adjusting frame 2 10 Synchronously drives the guide wheel 211 to descend. When the guide wheel 211 contacts the inclined guide surface 402, as the guide wheel 211 continues to descend, the wedge-shaped seat 401 can be pushed to move toward the detection base 2. The wedge-shaped seat 401 synchronously drives the sealing rod 7 to slide until the upper positioning mold 204 and the lower positioning mold 209 are in contact. The first air hole 701 is connected to the first air channel 607, and the second air hole 702 is connected to the air supply hole 206 in the middle position. Correspondingly, as the lifting module 203 drives the upper positioning mold 204 to reset, the second spring 404 can synchronously drive each component to reset. This embodiment does not require the provision of other servo drive devices to drive the sealing rod 7 to move. As the lifting module 203 drives the upper positioning mold 204 to descend, the effect of automatically adjusting the air channel can be achieved, and the synchronization and stability are higher.

[0053] See also Figure 2 and Figure 4 A first air outlet pipe 207 connected to the first air channel 607 is also fixedly arranged on the detection base 2, and the end of the first air outlet pipe 207 is connected to the air storage tank through an air pump; it can be explained that after the detection is completed, the air pump can extract and collect the remaining helium in the first air channel 607, the first cavity 608, the second cavity 609 and the third cavity 606 through the first air outlet pipe 207 for reuse.

[0054] In addition, an exhaust hole 212 is opened on the upper positioning mold 204, and the exhaust hole 212 is connected to the second exhaust pipe 208 fixedly arranged on the upper positioning mold 204 through the fifth air channel. The end of the second exhaust pipe 208 is connected to the gas storage tank through an air pump; it can be explained that when the battery cover 5 leaks, the leaked helium will gather in the detection cavity 601, and the air pump will extract and collect the helium in the detection cavity 601 through the exhaust hole 212, the fifth air channel and the second exhaust pipe 208 for reuse.

[0055] In this embodiment, please refer to Figures 1-4The removal module includes a support plate 3 arranged on the conveyor belt 1, the support plate 3 is fixed on the support frame 311, the support plate 3 is rotated to the side of the conveyor belt 1 to arrange a gear 301, the gear 301 is fixed to the driving end of the servo motor 302 fixed on the support plate 3, two sets of racks 303 are arranged on both sides of the gear 301 in parallel and staggered manner, the two sets of racks 303 are engaged with the gear 301, a positioning plate 306 is fixed on one side of the rack 303, a lifting electric cylinder 310 is fixed on the positioning plate 306, the driving end of the lifting electric cylinder 310 is fixed to the removing plate 307 arranged at the bottom of the positioning plate 306, and the removing plate 307 Two groups of suction cups 308 are arranged on one side of the conveyor belt 1, and the suction cups 308 are connected to the suction pump 309 arranged on the positioning plate 306; specifically, when removing the battery cover 5, the removal plate 307 is driven downward by the lifting electric cylinder 310 until the suction cup 308 contacts the battery cover 5, and the suction pump 309 is started. The battery cover 5 can be adsorbed by the suction cup 308. When moving the battery cover 5, the servo motor 302 is started to drive the gear 301 to rotate. The gear 301 can drive the positioning plates 306 on both sides to move in opposite directions by engaging with the racks 303 on both sides, so as to achieve the effect of alternating loading and unloading.

[0056] Accordingly, in order to improve the stability of the rack 303 movement, a support 305 is fixedly arranged at the bottom of the support plate 3, and a guide rod 304 fixed to the rack 303 is slidably inserted in the support 305; specifically, when the rack 303 moves, the guide rod 304 can be synchronously driven to slide in the support 305 to improve its stability during movement.

[0057] A helium inspection machine for a new energy battery cover plate helium inspection process, the helium inspection method comprising the following steps:

[0058] See also Figure 5 S1, first positioning the battery cover 5 on the lower positioning mold 209 for pre-positioning;

[0059] S2. The lifting module 203 drives the upper positioning mold 204 to descend. During the movement of the upper positioning mold 204, the ejector structure 604 is synchronously driven to move. The battery cover 5 is pressed and fixed by the ejector structure 604, and an ejector mark is formed on the battery cover 5.

[0060] S3. The air pump extracts helium from the helium storage tank and delivers it to the second air channel 704 through the air delivery pipe 6 and the air inlet 703. The helium in the second air channel 704 enters the first air channel 607 and finally enters the first cavity 608, the second cavity 609, and the third cavity 606 through the three sets of air delivery holes 206.

[0061] S4. When the battery cover 5 leaks, helium will pass through the battery cover 5 and enter the detection cavity 601. The detector in the detection cavity 601 can obtain a detection signal. Otherwise, it means that the battery cover 5 does not leak.

[0062] The above disclosures are only a few specific embodiments of the present invention. However, the embodiments of the present invention are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the scope of protection of the present invention.

Claims

1. A thimble tooling for helium inspection of new energy battery cover plates, comprising a detection base (2), characterized in that: The detection base (2) is symmetrically provided with two groups of detection grooves (205), and the detection grooves (205) are embedded with lower positioning molds (209) for positioning the battery cover (5); The detection base (2) is fixed to the top plate (202) via a connecting shaft (201); a lifting module (203) corresponding to the detection groove (205) is fixedly arranged on the top plate (202) in the direction of the detection base (2); a driving end of the lifting module (203) is fixed to an upper positioning mold (204); and a detection cavity (601) is opened on the upper positioning mold (204) in the direction of the detection base (2); A reserved groove (602) is provided in the upper positioning mold (204), a first spring (603) is fixedly arranged in the reserved groove (602), the other end of the first spring (603) is fixed to a pin structure (604) slidably arranged in the reserved groove (602), and the pin structure (604) extends to the bottom of the upper positioning mold (204).

2. A helium inspection machine for a new energy battery cover plate helium inspection process, comprising a ejector tool for a new energy battery cover plate helium inspection process according to claim 1, characterized in that: It also includes two sets of spacers (605) fixedly arranged in the lower positioning mold (209) to separate the lower positioning mold (209) into a first cavity (608), a second cavity (609) and a third cavity (606). The first cavity (608), the second cavity (609) and the third cavity (606) are respectively used to embed the protruding structures provided on the lower surface of the battery cover (5).

3. A helium inspection machine for a new energy battery cover plate helium inspection process according to claim 2, characterized in that: The bottom of the detection groove (205) is respectively provided with three groups of gas delivery holes (206), and the three groups of gas delivery holes (206) correspond to the first cavity (608), the second cavity (609) and the third cavity (606), respectively. The bottom of the detection grooves (205) on both sides is respectively provided with a first air channel (607) connected to the three groups of gas delivery holes (206).

4. A helium inspection machine for a new energy battery cover plate helium inspection process according to claim 3, characterized in that: The detection base (2) is further provided with a second air channel (704) connected to the first air channels (607) on both sides. An air delivery pipe (6) is fixedly arranged at the bottom of the detection base (2). The second air channel (704) is connected to the air delivery pipe (6) through an air inlet (703). The other end of the air delivery pipe (6) is connected to a helium gas storage tank through an air pump.

5. A helium inspection machine for a new energy battery cover plate helium inspection process according to claim 2, characterized in that: A conveyor belt (1) for conveying the battery cover (5) is provided on one side of the detection base (2); a removal module is provided on the conveyor belt (1); and the removal module is used for alternately loading and unloading the battery cover (5).

6. A helium inspection machine for a new energy battery cover plate helium inspection process according to claim 4, characterized in that: Two groups of sealing rods (7) are symmetrically arranged in the second air channel (704) for sliding. The sealing rods (7) are slidably fitted with the side walls of the second air channel (704). The sides of the two groups of sealing rods (7) close to each other are connected to the air inlet pipe (705). The air inlet pipe (705) is symmetrically provided with a first air hole (701) for communicating with the first air channel (607) on the side close to the sealing rod (7). The air inlet pipe (705) is also provided with a second air hole (702). The second air hole (702) is used to communicate with the air delivery hole (206) in the middle position.

7. A helium inspection machine for a new energy battery cover plate helium inspection process according to claim 6, characterized in that: The detection base (2) is further provided with two sets of adjustment mechanisms, which are respectively used to drive the sealing rod (7) to slide in the second air channel (704).

8. A helium inspection machine for a new energy battery cover plate helium inspection process according to claim 7, characterized in that: An adjusting plate (4) is fixedly arranged on one end of the sealing rod (7) away from the air inlet pipe (705), and both ends of the adjusting plate (4) are respectively slidably sleeved on the support shaft (403), the support shaft (403) is fixed to the detection base (2), a second spring (404) is provided on the support shaft (403), one end of the second spring (404) is fixed to the adjusting plate (4), and the other end is fixed to the end of the support shaft (403), a wedge-shaped seat (401) is fixedly arranged on the side of the adjusting plate (4) away from the detection base (2), and an inclined guide surface (402) is provided on the wedge-shaped seat (401); The adjustment mechanism comprises an adjustment frame (210) fixed to one side of the lower positioning mold (209), and a guide wheel (211) corresponding to the inclined guide surface (402) is rotatably arranged on one side of the bottom of the adjustment frame (210).

9. A helium inspection machine for a new energy battery cover plate helium inspection process according to claim 4, characterized in that: A first air outlet pipe (207) connected to the first air channel (607) is fixedly arranged on the detection base (2), and the end of the first air outlet pipe (207) is connected to the air storage tank via an air pump; an exhaust hole (212) is provided on the upper positioning mold (204), and the exhaust hole (212) is connected to a second air outlet pipe (208) fixedly arranged on the upper positioning mold (204) via a fifth air channel, and the end of the second air outlet pipe (208) is connected to the air storage tank via an air pump.

10. A helium inspection machine for a new energy battery cover plate helium inspection process according to claim 5, characterized in that: The removal module comprises a support plate (3) arranged on the conveyor belt (1), the support plate (3) being fixed on a support frame (311), the support plate (3) being arranged to rotate on one side of the conveyor belt (1), the gear (301) being fixed to the driving end of a servo motor (302) fixed on the support plate (3), two sets of racks (303) being arranged in parallel and staggered on both sides of the gear (301), and both sets of racks (303) being meshed with the gear (301). A positioning plate (306) is fixedly arranged on one side of the rack (303), a lifting electric cylinder (310) is fixedly arranged on the positioning plate (306), a driving end of the lifting electric cylinder (310) is fixed to a removal plate (307) arranged at the bottom of the positioning plate (306), two groups of suction cups (308) are arranged on the side of the removal plate (307) close to the conveyor belt (1), and the suction cups (308) are connected to a suction pump (309) arranged on the positioning plate (306).

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