Battery pack water connector assembling system and assembling method

Abstract

The invention provides a battery pack water connector assembling system and method. The battery pack water connector assembling system comprises a conveying device, and a riveting station, a visual detection station, a floating detection station, a manual feeding station, a valve element chambering station, a manual assembling station, a pressing station and a Z-axis detection station are sequentially arranged on a conveying path of the conveying device; according to the automatic assembly system provided by the invention, through accurate process control and automatic detection, the assembly precision and quality of each part are ensured, the production efficiency and the product consistency are remarkably improved, and the market competitiveness of the battery pack water connector is further enhanced.

Description

Technical Field

[0001] The present invention relates to an assembly system, and particularly to a battery pack water joint assembly system and an assembly method. Background Art

[0002] An electric vehicle refers to a vehicle powered by an on-vehicle power source and driven by an electric motor, which meets the requirements of road traffic and safety regulations. The types of electric vehicles can be divided into pure electric vehicles, hybrid electric vehicles, and fuel cell vehicles. A battery cooler is a key component for regulating the temperature of a battery pack in a liquid-cooled electric vehicle. Enhancing its heat exchange effect can reduce the required compressor speed or refrigerant displacement, thereby reducing power consumption and improving the cruising range and driving performance.

[0003] A battery pack water joint in the prior art includes a bottom plate, a floating seat, a valve body, and a pipe fitting joint. The bottom plate is a cuboid as a whole, and a pipe body installation hole and a floating seat installation hole penetrate through the upper and lower ends of the bottom plate. Among them, the pipe body installation hole is used to install the valve body and the pipe fitting joint, and there are four floating seat installation holes, which are arranged at the four corners of the bottom plate for installing the floating seat. The floating seat is floatingly installed on the bottom plate through a spring, and it can achieve radial floating and axial floating. The floating seat includes a lower seat body arranged at the lower end of the bottom plate and an upper seat body arranged at the upper end of the bottom plate; a sleeve is provided at the center of the lower seat body; a first central hole is opened on the upper floating seat. After the sleeve passes upward through the first central hole of the upper seat body, it flares outward to form a first stop portion, and the first stop portion is used to limit the upper seat body. The valve body is fixed to the upper end of the bottom plate by bolts. The valve body includes two parallel and connected cylinders, the two ends of the cylinder are open to form a valve hole, a valve core mounting seat is provided at the center of the valve hole, a second central hole is opened on the valve core mounting seat, and a rod body is sleeved in the central hole. During assembly, it is installed from bottom to top and fixed by a nut at its upper end; a blind hole is opened at the end of the rod body, and the edge of the blind hole flares outward to form a second stop portion for limiting and fixing the nut; the pipe fitting joint passes through the pipe body installation hole and is connected to the interface on the valve body by a buckle.

[0004] Due to the relatively complex assembly process of the battery pack water joint, in the prior art, it is assembled manually, with low assembly efficiency and accuracy, and the product quality stability is not ideal. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide an automatic assembly system and an assembly method that can achieve full-automatic assembly and have high assembly efficiency and accuracy.

[0006] A battery pack water joint assembly system for assembling the above battery pack water joint includes a conveying device, and the following are sequentially arranged on the conveying path of the conveying device: The riveting station is used to flare the end of the sleeve on the floating seat on the bottom plate of the battery pack water joint through a servo riveting machine to form a first stop portion; The vision inspection station is used to detect the outer expansion dimension of the first stop portion through the vision inspection device 3; The floating detection station is used to fix each floating seat and detect the horizontal floating amount of the bottom plate, including a pushing mechanism for pushing the bottom plate to move horizontally in the X-axis and Y-axis directions; The manual feeding station is used for manual assembly and feeding of the valve body; The valve core reaming station is used to flare the end blind hole of the rod body on the valve body through a servo riveting machine to form a second stop portion; The manual assembly station assembles the valve body onto the bottom plate manually; The pipe joint assembly station is used to assemble the pipe joint onto the valve body and perform pre-pressing and fixing; The pressing station is used to press the pipe joint onto the valve body through a servo press with a preset pressure value; The Z-axis detection station is used to fix the floating seat and detect the vertical floating amount of the bottom plate, including a pushing mechanism for pushing the bottom plate to move in the Z-axis direction; The discharging station is used for discharging the battery pack water joint.

[0007] Further, an assembly table is provided at the manual assembly station. The assembly table is located on one side of the conveying device. A robotic arm, a discharging conveyor belt, and a feeding sliding seat are provided between the assembly table and the conveying device. The robotic arm can move the valve body and the bottom plate on the conveying device to the discharging conveyor belt and convey them towards the assembly table, or move the assembled bottom plate and valve body to the fixture on the conveying device. The feeding sliding seat is used to move the assembled bottom plate and valve body to the picking path of the robotic arm.

[0008] Further, a partition net is provided between the feeding and discharging ends of the conveyor belt and between the feeding and discharging ends of the feeding sliding seat.

[0009] Further, a barcode scanner for tracing is provided at each station.

[0010] Further, the discharging station includes a qualified discharging channel and an unqualified discharging channel.

[0011] Further, a fixture is provided on the conveying device. The fixture is provided with a first material placement hole for placing the bottom plate and a second material placement hole for placing the valve body. A floating seat accommodation hole for accommodating the floating seat and a valve body hole for the valve body to pass through are opened on the bottom surface of the first material placement hole. A claw groove for the claw to extend into and grab is opened on the side wall of the first material placement hole.

[0012] Further, a Z-axis detection station is provided with a Z-axis detection device, which includes a positioning mechanism for radially positioning the fixture at this station, a first support assembly for upwardly supporting the fixture at this station, a second support assembly that can insert into the valve body and is used for upwardly supporting the valve body, a vertical pushing mechanism for pushing the bottom plate downward, and a Z-axis detection device for detecting the downward displacement of the bottom plate.

[0013] Further, the Z-axis detection device includes a lifting seat located directly below this station and a first lifting cylinder for driving the vertical lifting of the lifting seat. A positioning support plate is provided on the top of the lifting seat, and the upper surface of the positioning support plate serves as a support surface for contacting and supporting the fixture. A number of positioning pins are provided on the support surface, and positioning holes corresponding to the positioning pins are provided on the bottom surface of the fixture; a second lifting cylinder is provided on the lifting seat, and a valve body support column that can upwardly pass through the positioning support plate and insert into the valve body on the fixture is provided at the upper end output of the second lifting cylinder.

[0014] Further, a two-way floating detection device is provided on the floating detection station.

[0015] Further, the two-way floating detection device includes a floating detection mechanism, and the floating detection mechanism includes: Mounting seat Ⅰ, serving as a mounting carrier; A detection fixture, fixed on the mounting seat Ⅰ. The top surface of the detection fixture serves as a placement surface for placing the bottom plate of the battery pack water joint. Positioning columns corresponding to the sleeve holes on the bottom plate are vertically provided on the placement surface, and the positioning columns can insert into the sleeve holes on the bottom plate to achieve radial limit of the bottom plate; A material pushing assembly, fixed on the mounting seat Ⅰ. The material pushing end of the material pushing assembly faces the detection fixture and is used for pushing the bottom plate on the detection fixture to move radially. The material pushing assembly is multiple and is respectively arranged on the left and right sides and the front and rear ends of the detection fixture, for pushing the bottom plate on the placement surface from different directions and causing the bottom plate to have radial floating in different directions; A detection sensor, whose detection end faces the detection fixture and is used for detecting the radial floating amount of the bottom plate on the detection fixture. The detection sensor is multiple and is respectively arranged on the left and right sides and the front and rear ends of the detection fixture.

[0016] Further, the material pushing assembly includes a cylinder and a push block provided at the output end of the cylinder.

[0017] Further, the material pushing direction of the material pushing assembly is parallel to the length direction or the width direction of the bottom plate.

[0018] Further, the contact point between the pushing component and the bottom plate is located on the central vertical plane of the bottom plate.

[0019] Further, the detection end of the detection sensor faces the positioning post.

[0020] Further, the detection ends of the detection sensors face different positioning posts.

[0021] Further, the end of the positioning post is provided with a chamfer or a fillet.

[0022] Further, the pushing component includes a first pushing component arranged on the left side, a second pushing component arranged on the right side, a third pushing component arranged at the front end, and a fourth pushing component arranged at the rear end, and the detection sensors include a first detection sensor arranged on the left side, a second detection sensor arranged on the right side, a third detection sensor arranged at the front end, and a fourth detection sensor arranged at the rear end.

[0023] Further, the first detection sensor faces the positioning post at the left rear end, the second detection sensor faces the positioning post at the right front end, the third detection sensor faces the positioning post at the left front end, and the fourth detection sensor faces the positioning post at the right rear end.

[0024] Further, the detection sensor is a laser displacement sensor.

[0025] Further, it further includes a material transfer manipulator I, and the material transfer manipulator I is used to transfer the bottom plate between the fixtures of the conveying device and the detection fixture.

[0026] Further, it further includes a barcode scanner for scanning the bottom plate.

[0027] Further, a valve core reaming device is provided at the valve core reaming station.

[0028] Further, the valve core reaming device includes: A material placing component for placing the valve body of the battery pack water joint. The material placing component includes a support post corresponding to the valve hole on the valve body. The support post can allow the valve hole to be sleeved in and realize the limit of the valve body. The top of the support post contacts the lower end of the valve core in the valve hole and realizes the support of the valve core. A material clamping component, including clamping cylinders I arranged on both sides of the material placing component and clamping blocks arranged at the output ends of the clamping cylinders I for clamping the valve body. The hole expanding mechanism includes a riveting press disposed directly above the material placing assembly and a riveting head disposed at the output end of the riveting press and coaxial with the support column. The riveting head can be inserted into the hole body at the top of the valve core and cause the edge of the open end of the hole body to deform outward to form a stop portion for limiting the nut outside the valve core.

[0029] Further, the material placing assembly further includes a rotating seat and a driving device for driving the rotating seat to rotate. The rotation axis of the rotating seat is parallel to the axis of the support column, and the riveting head is located on the rotation path of the support column.

[0030] Further, there are two support columns which are circumferentially and evenly distributed around the axis of the rotating seat.

[0031] Further, the driving device is a rotary cylinder.

[0032] Further, it further includes a mounting seat II. The material placing assembly and the clamping assembly are disposed on the upper surface of the mounting seat II, and the driving device is disposed at the lower end of the mounting seat II.

[0033] Further, a riveting backing plate for contacting the lower end of the valve core is provided on the top surface of the support column.

[0034] Further, the top surface of the support column is recessed inward to form a mounting hole, and the riveting backing plate is disposed in the mounting hole.

[0035] Further, it further includes a material transfer manipulator II which is used to transfer the valve body between the fixture of the conveying device and the material placing assembly.

[0036] Further, the material transfer manipulator II includes a clamping assembly. The clamping assembly includes jaws for clamping the valve body and an elastic pressure rod disposed between the two jaws. The elastic pressure rod can elastically expand and contract, and its expansion and contraction direction is parallel to the axis of the support column. The elastic pressure rod can contact the upper end of the valve body and cause the valve body to have a downward movement tendency.

[0037] Further, it further includes a detection sensor II which faces the material placing assembly and is used to detect the sealing ring on the valve body on the material placing assembly.

[0038] Further, the material transfer manipulator II includes a main horizontal sliding seat slidably matched between the conveying device and the material placing assembly, a vertical sliding seat vertically slidably matched on the main horizontal sliding seat, a secondary horizontal sliding seat slidably matched on the vertical sliding seat, and a clamping assembly disposed on the secondary horizontal sliding seat and used to clamp the valve body. The sliding direction of the secondary horizontal sliding seat is parallel to the sliding direction of the main horizontal sliding seat.

[0039] Furthermore, a pipe joint assembly station is provided with a pipe joint assembly device.

[0040] Furthermore, the pipe joint assembly device includes: A discharging mechanism for discharging pipe joints; A material distributing mechanism arranged at the discharging end of the discharging mechanism for material distribution, including a horizontally sliding material distributing seat, the sliding direction of the material distributing seat being perpendicular to the discharging direction of the discharging mechanism and capable of moving between a first position and a second position. When in the first position, the material distribution groove on the material distributing seat can be docked with the discharging end of the discharging mechanism and enable the pipe joints at the discharging end of the discharging mechanism to enter the material distribution groove; A material transferring mechanism for transferring the pipe joints on the material distributing seat at the second position to the valve body of the battery pack water joint in the fixture at the pipe assembly station; A pre-pressing mechanism located directly above the fixture at the pipe assembly station for pre-pressing the pipe joints onto the valve body.

[0041] Furthermore, there are multiple material distribution grooves which are arranged in sequence along the sliding direction of the material distributing seat.

[0042] Furthermore, the material transferring mechanism can simultaneously grasp multiple pipe joints in the material distribution grooves.

[0043] Furthermore, there are two material distribution grooves.

[0044] Furthermore, the material distributing mechanism further includes a horizontally sliding limiting seat and a sliding seat, and the limiting seat and the sliding seat are on the same sliding path. The material distributing seat is installed on the sliding seat. The limiting seat can move between a third position and a fourth position, and the sliding seat can abut against the limiting seat at the first position and the second position respectively to dock the two material distribution grooves with the discharging end of the discharging mechanism.

[0045] Furthermore, the material distributing mechanism further includes a first air cylinder for driving the sliding of the limiting seat and a second air cylinder for driving the sliding of the sliding seat, and the second air cylinder is fixed on the limiting seat.

[0046] Furthermore, the material transferring mechanism includes a horizontally sliding horizontal sliding seat and a lifting sliding seat vertically slidingly matched on the horizontal sliding seat. The sliding direction of the horizontal sliding seat is perpendicular to the sliding direction of the material distributing seat. A rotary air cylinder corresponding to the material distribution groove is arranged on the lifting sliding seat. The rotation axis of the rotary air cylinder is parallel to the length direction of the material distribution groove. A clamping air cylinder II facing the material distributing seat is arranged at the output end of the rotary air cylinder, and a clamping jaw for clamping the pipe joint is arranged at the output end of the clamping air cylinder II.

[0047] Further, the jaw includes an inner jaw and an outer jaw arranged in parallel. The inner jaw can be horizontally inserted into the pipe fitting, and a clamping area is formed between the inner jaw and the outer jaw.

[0048] Further, the side wall of the inner jaw is provided with an inner clamping surface that can fit against the inner wall of the pipe fitting, and the side wall of the outer jaw is provided with an outer clamping surface that can fit against the outer wall of the pipe fitting.

[0049] Further, the preloading mechanism includes a vertically arranged preloading cylinder and a pressing block arranged at the output end of the preloading cylinder. The pressing block is provided with a positioning groove corresponding to the pipe fitting.

[0050] Meanwhile, the present application also provides an assembly method for assembling the above-mentioned battery pack water joint, which includes the following steps: S1. Loading: Place the bottom plate into the first material placement hole of the fixture at the feeding end of the conveying device manually or mechanically. S2. Riveting and reaming: Flare the end of the sleeve on the floating seat of the bottom plate through a servo riveting machine to form a first stop portion. S3. Riveting opening detection: Detect the outer expansion size of the first stop portion through a vision detection device 3 and determine whether the outer expansion size is qualified. If it is qualified, proceed to the next station and perform the next process. If it is unqualified, do not execute all subsequent processes until it is output from the unqualified channel at the discharging station. S4. Floating detection: Fix each floating seat and detect the horizontal floating amount of the bottom plate, including the two-way horizontal floating amount detection of the X-axis and Y-axis of the bottom plate, and determine whether the floating amount is qualified. If it is qualified, proceed to the next station and perform the next process. If it is unqualified, do not execute all subsequent processes until it is output from the unqualified channel at the discharging station. S5. Valve body loading: Assemble the valve body manually and place it into the second material placement hole of the fixture at the manual loading station. S6. Spool reaming: Flare the end blind hole of the rod body on the valve body through a servo riveting machine to form a second stop portion. S7. Manual assembly: Assemble the valve body onto the bottom plate manually. S8. Pipe fitting assembly: Assemble the pipe fitting onto the valve body and perform preloading and fixing so that the pipe fitting is connected to the valve body and does not fall off. S9. Pipe pressing: Press the pipe fitting onto the valve body through a servo press with a preset pressure value. S10. Z-axis detection: Fix the floating seat and detect the vertical floating amount of the bottom plate, and determine whether the floating amount is qualified. If it is qualified, it is output from the qualified channel at the discharging station; If it is unqualified, it is output from the unqualified channel at the discharging station; S11, discharging. The manipulator transfers the battery pack water joint from the conveying device to the corresponding discharging channel and outputs it according to the front-end detection result.

[0051] The automatic assembly system provided by the present invention ensures the assembly accuracy and quality of each component through precise process control and automatic detection, significantly improves the production efficiency and product consistency, and further enhances the market competitiveness of the battery pack water joint. Description of the Drawings

[0052] Figure 1 It is a schematic structural diagram of the battery pack water joint assembly system of the present invention; Figure 2 It is a schematic installation diagram of the bidirectional floating detection device in the assembly system of the present invention; Figure 3 It is a schematic structural diagram of the bidirectional floating detection device of the present invention; Figure 4 It is a schematic structural diagram of the floating detection mechanism of the bidirectional floating detection device of the present invention; Figure 5 It is a top view of the floating detection mechanism of the bidirectional floating detection device of the present invention; Figure 6 It is a sectional view of the floating detection mechanism of the bidirectional floating detection device of the present invention; Figure 7 It is a schematic structural diagram of the valve core reaming device of the present invention; Figure 8 It is a schematic installation diagram of the material placing component of the valve core reaming device of the present invention; Figure 9 It is a sectional view of the material placing component of the valve core reaming device of the present invention; Figure 10 It is a schematic diagram of the placement state of the valve body of the valve core reaming device of the present invention; Figure 11 It is a schematic structural diagram of the material transfer manipulator of the valve core reaming device of the present invention; Figure 12 It is a schematic structural diagram of the elastic pressure rod of the valve core reaming device of the present invention; Figure 13 It is a schematic structural diagram of the joint pipe joint assembly device of the present invention; Figure 14 It is a schematic structural diagram of the material distribution mechanism of the pipe joint assembly device of the present invention; Figure 15 It is a schematic installation diagram of the sliding seat of the pipe joint assembly device of the present invention; Figure 16 Schematic structural diagram of the material transfer mechanism of the pipe joint assembly device of the present invention; Figure 17 Schematic structural diagram of the jaw of the pipe joint assembly device of the present invention; Figure 18 Schematic structural diagram of the positioning component of the Z-axis detection device of the present invention; Figure 19 Schematic structural diagram of the fixture in the present invention; In the figure: 2 - Riveting device, 3 - Bidirectional floating detection device, 31 - Material transfer manipulator I, 32 - Scanning gun, 33 - Floating detection mechanism, 331 - Mounting seat I, 332 - Detection jig, 3320 - Avoidance groove, 3321 - Positioning post, 333 - Pushing component, 333a - First pushing component, 333b - Second pushing component, 333c - Third pushing component, 333d - Fourth pushing component, 3331 - Pushing block, 334 - Detection sensor, 334a - First detection sensor, 334b - Second detection sensor, 334c - Third detection sensor, 334d - Fourth detection sensor, 4 - Assembly table, 5 - Valve core reaming device, 51 - Material placement component, 511 - Mounting seat II, 512 - Rotating seat, 513 - Support column, 5131 - Riveting backing plate, 514 - Driving device, 52 - Material clamping component, 521 - Material clamping cylinder I, 522 - Clamping block, 53 - Reaming mechanism, 531 - Riveting head, 54 - Material transfer manipulator II, 541 - Main horizontal sliding seat, 5411 - First cylinder I, 542 - Vertical sliding seat, 5421 - Second cylinder, 543 - Clamping cylinder, 544 - Claw, 5441 - Pressing rod hole, 545 - Pressing rod fixing seat, 546 - Elastic pressing rod, 56 - Detection sensor II, 6 - Pipe fitting assembly device, 61 - Discharging mechanism, 63 - Material separating mechanism, 631 - Material separating seat, 6310 - Material separating groove, 632 - First cylinder II, 6321 - Limiting seat, 633 - Second cylinder, 6331 - Sliding seat, 634 - Limiting block, 64 - Material transfer mechanism, 642 - Horizontal sliding seat, 643 - Lifting sliding seat, 644 - Rotary cylinder, 645 - Material clamping cylinder II, 6451 - Inner clamping claw, 6452 - Outer clamping claw, 65 - Pre - pressing mechanism, 651 - Pre - pressing cylinder, 652 - Pressing block, 7 - Z - axis detection device, 71 - Lifting seat, 72 - First lifting cylinder, 73 - Positioning support plate, 74 - Second lifting cylinder, 75 - Valve body support column, 8 - Pressing device, 9 - Jig, 92 - First material placement hole, 922 - Floating seat accommodating hole, 920 - Valve body hole, 921 - Claw groove, 93 - Second material placement hole; op10 - Bottom plate loading station, op20 - Riveting station, op30 - Visual inspection station, op40 - Floating detection station, op50 - Manual loading station, op60 - Valve core reaming station, op70 - Manual assembly station, op80 - Pipe fitting assembly station, op90 - Pressing station, op100 - Z - axis detection station, op110 - Discharging station. Detailed implementation manners

[0053] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0054] Refer to Figures 1 - 19, the present invention also provides an assembly system for assembling a battery pack water joint, which includes a conveying device. On the conveying path of the conveying device, there are successively arranged a bottom plate loading station op10, a riveting station op20, a vision inspection station op30, a floating inspection station op40, a manual loading station op50, a valve core reaming station op60, a manual assembly station op70, a piping joint assembly station op80, a pressing station op90, a Z-axis inspection station op100 and an unloading station op110; The bottom plate loading station op10 manually loads the bottom plate.

[0055] On the riveting station op20, there is a riveting device 2. The riveting device includes a servo riveting machine, which is used to flare the end of the sleeve on the floating seat on the bottom plate at this station through the servo riveting machine to form a first stop portion.

[0056] The vision inspection station op30 is used to detect the outer expansion size of the first stop portion through a vision inspection device, and then judge whether its outer expansion size is qualified, and decide whether to perform the next process; if it is qualified, the subsequent processes are normally executed, and if it is unqualified, none of the subsequent processes are executed until unloading.

[0057] The floating inspection station op40 detects the horizontal floating of the bottom plate through a two-way floating inspection device 3. Specifically, it is used to fix each floating seat, and then detect the horizontal floating amount of the bottom plate. It includes a pushing mechanism for pushing the bottom plate to move horizontally in the X-axis and Y-axis directions. The horizontal floating inspection includes X-axis inspection and Y-axis inspection.

[0058] For the convenience of system layout, to improve the overall structural compactness and shorten the total length of the system and the conveying device, in this application, a manipulator is provided, which is used to move the bottom plate at this station to the inspection platform on one side of the conveying device. After the inspection is completed, it is moved back to this station.

[0059] The manual loading station op50 is used for manual assembly and loading of the valve body, that is, after assembly, it is manually placed in the second placement hole 93 of the fixture 9 on the conveying device at this station.

[0060] The valve core reaming station op60 performs reaming through a valve core reaming device 5. It mainly flares the end blind hole of the rod on the valve body through a servo riveting machine to form a second stop portion.

[0061] The manual assembly station op70 assembles the valve body onto the bottom plate manually. To facilitate the system layout, improve the overall structural compactness, and shorten the total length of the system and the conveying device, in this application, an assembly table 4 is provided on the manual assembly station op70. The assembly table 4 is located on one side of the conveying device. Between the assembly table 4 and the conveying device, there are a robotic arm, an output conveyor belt, and a feeding slide. Among them, the robotic arm can move the valve body and the bottom plate on the conveying device to the output conveyor belt and convey them towards the assembly table 4. At the same time, it can move the assembled bottom plate and valve body to the fixture on the conveying device. The feeding slide is used to move the assembled bottom plate and valve body onto the picking path of the robotic arm. Workers pick up the materials (valve body and bottom plate) from the output conveyor belt and assemble them on the assembly table 4. After assembly, they are placed on the feeding slide and conveyed towards the robotic arm to realize the picking of the robotic arm. To improve safety, partition nets are provided between the feeding and output ends of the conveyor belt and between the feeding and output ends of the feeding slide to avoid potential safety hazards caused by collisions with the robotic arm during the picking process.

[0062] The pipe fitting assembly station op80 assembles the pipe fitting onto the valve body through the pipe fitting assembly device 6 and performs pre-pressing and fixing.

[0063] The pressing station op90 uses the pressing device 8. In this embodiment, the servo press is used to press the pipe fitting onto the valve body with a preset pressure value to achieve precise pressing and avoid being too loose or too tight, which may affect the product quality and service life.

[0064] The Z-axis detection station op100 detects the vertical floating amount of the bottom plate, that is, the Z-axis floating amount, through the Z-axis detection device 7. Its core is to fix the floating seat and detect the vertical floating amount of the bottom plate, including a pushing mechanism for pushing the bottom plate to move in the Z-axis direction. The output station op110 includes a robotic arm and a conveyor belt, which are used to remove the battery pack water joint at the end of the conveying device. The output station op110 has two output channels, namely the qualified output channel and the unqualified output channel. The qualified output channel is used for the output of qualified products, and the unqualified output channel is used for the output of unqualified products.

[0065] To facilitate the traceability of product quality, in this embodiment, a barcode scanner is provided at each of the above stations for scanning to conduct traceability.

[0066] The Z-axis detection device 7 is provided at the Z-axis detection station for detecting the vertical floating amount of the bottom plate. It includes a positioning mechanism for radially positioning the fixture at this station, a first support assembly for upwardly supporting the fixture 9 at this station, a second support assembly that can insert into the valve body and is used for upwardly supporting the valve body, a vertical pushing mechanism for pushing the bottom plate downward, and a Z-axis detection device for detecting the downward pressure amount of the bottom plate. Specifically, refer to Figure 18, the Z-axis detection device 7 includes a lifting seat 71 located directly below this station and a first lifting cylinder 72 for driving the lifting seat 71 to vertically lift. A positioning support plate 73 is provided on the top of the lifting seat 71. The upper surface of the positioning support plate 73 serves as a support surface for contacting the bottom surface of the jig 9 to achieve support. A number of positioning pins are provided on the support surface. At the same time, positioning holes corresponding to the positioning pins are provided on the bottom surface of the jig; a second lifting cylinder 74 is provided on the lifting seat 71. The upper end output of the second lifting cylinder 74 is provided with a valve body support column 75, which can pass upward through the positioning support plate 73 and insert into the valve body on the jig for supporting the valve body during detection.

[0067] The jig structure of this application is referred to Figure 19 , which is an overall rectangular plate structure. It is located on the conveying device and conveys materials, entering the next station from one station and finally flowing back for reuse. Specifically, a first material placement hole 92 for placing the bottom plate and a second material placement hole 93 for placing the valve body are provided on the jig 9. A floating seat accommodation hole 922 for accommodating the floating seat and a valve body hole 920 for the valve body to pass through are provided on the bottom surface of the first material placement hole 92. At the same time, a jaw groove 921 for the jaws to extend into and grab is provided on the side wall of the first material placement hole 92.

[0068] The following will be elaborated in detail.

[0069] Refer to Figures 2 - 6 , the two-way floating detection device 3 is used to perform floating detection on the bottom plate of the battery pack water joint. Specifically, it is used to detect the relative movement (floating) amount in the horizontal direction between the floating seat on the bottom plate and the bottom plate body, and then determine whether the bottom plate is qualified. The design requirement for this floating amount is more than 4 mm.

[0070] The floating detection device includes a floating detection mechanism 33. The floating detection mechanism 33 is used to achieve detection, that is, to accurately measure the relative movement (floating) amount in the horizontal direction between the floating seat of the bottom plate and the bottom plate body.

[0071] The floating detection mechanism 33 includes a mounting seat Ⅰ 331. The mounting seat Ⅰ 331 serves as the mounting carrier of the floating detection mechanism and is used to install it into the assembly system of the battery pack water joint. A detection jig 332, a material pushing component 333, and a detection sensor 334 are installed on the mounting seat Ⅰ 331. Among them, the detection jig 332 is used to place the bottom plate of the battery pack water joint to be detected for accurate detection; the material pushing component 333 is used to push the bottom plate to move radially. In this application, it is a horizontal movement to make the bottom plate generate a floating amount; and the detection sensor 334 is used to detect the floating amount of the bottom plate, and judge whether the bottom plate meets the floating requirements by comparing with the preset standard value.

[0072] The detection fixture 332 is fixed on the mounting base I 331. In this application, it is arranged at a position close to the center of the mounting base I 331. The overall structure of the detection fixture 332 is a cuboid, and its length and width dimensions are basically the same as those of the bottom plate. The top surface of the detection fixture 332 is a horizontal plane, which serves as a placement surface for placing the bottom plate of the battery pack water joint. Positioning posts 3321 are vertically arranged on the placement surface, and the positioning posts 3321 correspond one by one to the sleeve holes on the bottom plate. In this application, the positioning posts 3321 are cylindrical, and the diameter is the same as that of the sleeve holes. In practice, in order to facilitate the placement of the bottom plate, the diameter of the positioning posts 3321 is slightly smaller than the inner diameter of the sleeve holes.

[0073] In this embodiment, there are four positioning posts 3321, which respectively correspond to the four sleeve holes on the bottom plate. The positioning posts 3321 can just be inserted into the sleeve holes on the bottom plate, thereby realizing the radial limit of the bottom plate, that is, the limit in the horizontal direction. Exactly speaking, it is to limit the floating seat on the bottom plate. Since there is an elastic member between the floating seat and the bottom plate body, therefore, relative to the floating seat, the bottom plate body can move under the action of an external force. And in this application, it is to detect the offset amount of the bottom plate body in the horizontal direction, that is, the horizontal floating amount.

[0074] Due to the slight difference between the outer diameter of the positioning posts 3321 and the inner diameter of the sleeve holes, in order to improve the placement efficiency of the bottom plate during detection, in this application, a chamfer or fillet is provided at the upper end of the positioning posts 3321, which can guide the sleeve holes on the bottom plate to smoothly slide onto the positioning posts 3321, reduce jamming, and improve the detection smoothness.

[0075] A relief groove 3320 is provided at the center of the detection fixture 332, which is used to accommodate the protruding part at the lower end of the bottom plate and provide a displacement space for the protruding part in the horizontal direction; it can ensure the placement stability of the bottom plate on the detection fixture 332, avoid contact and friction between the bottom plate body and the placement surface, and improve the detection efficiency and accuracy.

[0076] The material pushing assembly 333 is horizontally arranged, and its material pushing end faces the detection fixture 332, and is used to push the bottom plate on the detection fixture 332 to generate radial movement, that is, horizontal movement; specifically, the material pushing direction of the material pushing assembly 333 is parallel to the length direction or width direction of the bottom plate; in this application, there are multiple material pushing assemblies 333, preferably four, which are respectively arranged on the left and right sides and the front and rear ends of the detection fixture 332. The material pushing assemblies 333 at different positions can be used to push the bottom plate on the placement surface from different directions, thereby causing the bottom plate to generate radial floating in different directions; in this application, through the four material pushing assemblies 333 at the front, rear, left, and right, horizontal thrust can be applied to the bottom plate from the front end, rear end, left side, and right side respectively, so as to realize the horizontal displacement detection in multiple directions and ensure that the horizontal floating amount of the bottom plate under different stress conditions can be accurately measured.

[0077] In order to improve the smoothness of pushing the bottom plate and prevent it from deflecting, in this application, the contact point between the pushing component 333 and the bottom plate is located on the central vertical plane of the bottom plate, that is, at the central position of the side wall of the bottom plate; it can make the bottom plate translate and avoid angular deflection, thereby improving the detection accuracy.

[0078] In this application, the pushing component 333 includes a horizontally arranged air cylinder, and a pushing block 3331 is provided at the output end of the air cylinder. The pushing block 3331 is used to contact the side wall of the bottom plate, and the movement of the pushing block 3331 is controlled by the telescopic movement of the air cylinder to apply a thrust to the bottom plate. Usually, in order to avoid rigid contact, the contact surface of the pushing block 3331 is made of a soft material, such as rubber or silica gel or plastic, to reduce the wear on the bottom plate.

[0079] The detection end of the detection sensor 334 faces the detection fixture 332, and it is used to measure the radial floating amount of the bottom plate on the detection fixture 332. There are multiple detection sensors 334, preferably four, which are respectively arranged on the left and right sides and the front and rear ends of the detection fixture 332 to detect the floating amounts of the bottom plate in the front, back, left, and right directions, thereby realizing multi-directional detection of the bottom plate. In this application, the detection sensor 334 is a laser displacement sensor, and its detection direction is perpendicular to the surface of the side wall of the bottom plate, which can accurately capture the subtle displacement changes of the bottom plate under the action of the horizontal thrust, ensuring the real-time and accuracy of the data, and thus comprehensively improving the comprehensive performance of the detection system.

[0080] In order to improve the detection accuracy and detection consistency, in this application, the detection end of the detection sensor 334 faces the position of the positioning post 3321. At the same time, the detection ends of the respective detection sensors 334 face different positioning posts 3321, thereby improving the detection of the floating amount (offset amount) in all directions. Through this multi-dimensional detection mechanism, the stability of the bottom plate under different working conditions can be comprehensively evaluated, and the detection effect is good.

[0081] The following describes the specific configurations of the pushing component 333 and the detection sensor 334 in this application.

[0082] The material pushing assembly 333 includes a first material pushing assembly 333a, a second material pushing assembly 333b, a third material pushing assembly 333c, and a fourth material pushing assembly 333d. Among them, the first material pushing assembly 333a is arranged on the left side of the detection fixture 332, its material pushing end (output end) faces the detection fixture 332, is parallel to the length direction of the bottom plate, and this first material pushing assembly 333a is located at the central position of the bottom plate; the second material pushing assembly 333b is arranged on the right side of the detection fixture 332, its material pushing end (output end) faces the detection fixture 332, is parallel to the length direction of the bottom plate, and this second material pushing assembly 333b is located at the central position of the bottom plate; the third material pushing assembly 333c is arranged at the front end of the detection fixture, its material pushing end (output end) faces the detection fixture 332, is parallel to the width direction of the bottom plate, and this third material pushing assembly 333c is located at the central position of the bottom plate; the fourth material pushing assembly 333d is arranged at the rear end of the detection fixture 332, its material pushing end (output end) faces the detection fixture 332, is parallel to the width direction of the bottom plate, and this fourth material pushing assembly 333d is located at the central position of the bottom plate. The first material pushing assembly 333a, the second material pushing assembly 333b, the third material pushing assembly 333c, and the fourth material pushing assembly 333d are respectively used to push the bottom plate to deflect in four directions, so as to accurately measure the floating amounts in different directions.

[0083] The detection sensors 334 include a first detection sensor 334a, a second detection sensor 334b, a third detection sensor 334c, and a fourth detection sensor 334d. Among them, the first detection sensor 334a is arranged on the left side of the detection fixture 332, the second detection sensor 334b is arranged on the right side of the detection fixture 332, the third detection sensor 334c is arranged at the front end of the detection fixture, and the fourth detection sensor 334d is arranged at the rear end of the detection fixture.

[0084] In this application, the first detection sensor 334a faces the positioning post 3321 at the left rear end, the second detection sensor 334b faces the positioning post 3321 at the right front end, the third detection sensor 334c faces the positioning post 3321 at the left front end, and the fourth detection sensor 334d faces the positioning post 3321 at the right rear end. For the convenience of description, in this embodiment, the positioning post 3321 at the left rear end is called the first positioning post 3321a, the positioning post 3321 at the right front end is the second positioning post 3321b, the positioning post 3321 at the left front end is the third positioning post 3321c, and the positioning post 3321 at the right rear end is the fourth positioning post 3321d. The first detection sensor 334a is arranged near the first positioning post 3321a end and faces the first positioning post 3321a; the second detection sensor 334b is arranged near the second positioning post 3321b end and faces the second positioning post 3321b; the third detection sensor 334c is arranged near the third positioning post 3321c end and faces the third positioning post 3321c; the first detection sensor 334a is arranged near the fourth positioning post 3321d end and faces the fourth positioning post 3321d, which can detect the offset amounts in different directions and positions, with comprehensive and accurate detection.

[0085] In order to improve the degree of automation and adapt it to the assembly system, in this application, the floating detection device further includes a material transfer manipulator I 31, which is used to transfer the bottom plate between the fixture 9 of the conveying device and the detection fixture 332, realizing automatic loading and unloading for detection and improving the degree of automation.

[0086] In order to improve the quality monitoring of products, especially for later traceability, the floating detection device in this application further includes a barcode scanner 32, which is used to scan and record the bottom plate for convenient later traceability.

[0087] This two-way floating detection device uses multiple pusher components and multiple detection sensors to work together, can detect the floating amounts of the bottom plate in all directions, and improve product quality; the detection device faces each positioning post to ensure the consistency and reliability of detection data, reduce the error rate, and enhance product competitiveness; a material transfer manipulator is set to realize automatic loading and unloading for detection and improve the degree of automation; a barcode scanner is equipped for data recording, which is convenient for later traceability and provides strong support for improving product quality and later maintenance.

[0088] Refer to Figures 7 - 12 , the valve core reaming device 5 includes a material placing component 51, a material clamping component 52, and a reaming mechanism 53.

[0089] Among them, the material placing component 51 is used to place the valve body to be reamed, the material clamping component 52 is used to fix the valve body to ensure that the valve body does not move during the reaming process, and the reaming mechanism 53 is used to ream the hole body at the upper end of the valve core, so that the edge of the hole body deforms outward to form a stop portion. This stop portion is used to limit the nut outside the valve core to prevent the nut from loosening and improve the fixing reliability of the nut.

[0090] Specifically, the material placing component 51 is used to place the valve body of the battery pack water joint. The material placing component 51 includes support columns 513. The support columns 513 correspond to the valve holes on the valve body one by one. The support columns 513 are cylindrical, and their axes are perpendicular to the horizontal plane. The support columns 513 can accommodate the valve holes to be sleeved, thereby realizing the limit installation of the valve body. At the same time, the top of the support column 513 can contact the lower end of the valve core in the valve hole, thereby realizing the support of the valve core and providing a support force for the riveting at the upper end of the valve core.

[0091] During the reaming process, the top of the support column 513 contacts the lower end of the valve core and forms pressure. Over time, the top surface of the support column 513 will be worn, affecting the support accuracy and stability, resulting in a reduction in the reaming accuracy and affecting the product quality. Therefore, in this embodiment, a riveting backing plate 5131 is provided on the top surface of the support column 513. The riveting backing plate 5131 is used to contact the lower end of the valve core and is detachably installed on the top of the support column 513 through bolts. Specifically, the top surface of the support column 513 is recessed inward to form a circular installation hole. The riveting backing plate 5131 is arranged in this installation hole. The top surface of the riveting backing plate 5131 forms a support surface for contacting the lower end of the valve core. A counterbore is provided in the center of the riveting backing plate 5131 for fixed connection with the support column 513 through bolts. Through the above structural settings, the riveting backing plate 5131 can be replaced regularly to maintain the support accuracy. The material of the riveting backing plate 5131 can be selected as cemented carbide, which has good wear resistance, thereby prolonging the service life of the support column 513 and ensuring the accuracy of the reaming operation. This design not only improves the work efficiency but also reduces the maintenance cost and further improves the overall quality of the product.

[0092] The material clamping component 52 is used to fix the valve body and includes clamping cylinders Ⅰ 521 symmetrically arranged on both sides of the material placing component 51. The clamping cylinders Ⅰ 521 are horizontally arranged, that is, the output shafts of the clamping cylinders Ⅰ 521 are perpendicular to the axis of the support column 513. A clamping block 522 is provided at the output end of the clamping cylinder Ⅰ 521. The clamping block 522 is used to clamp the valve body. A V-shaped or U-shaped groove is provided on the clamping surface of the clamping block 522 for clamping the cylinder body of the valve body.

[0093] The hole expanding mechanism 53 is used for hole expanding (riveting). It includes a riveting machine arranged directly above the material placing assembly 51 and a riveting head 531 arranged at the output end of the riveting machine and coaxial with the support column 513. The riveting head 531 can be inserted into the hole body at the top of the valve core and cause the edge of the open end of the hole body to deform outward, forming a stop portion for limiting the nut outside the valve core.

[0094] In order to improve the hole expanding (riveting) effect and accuracy and avoid the influence on hole expanding accuracy caused by using multiple riveting heads 531, in this application, the material placing assembly 51 further includes a rotating seat 512 which can rotate, and its rotation axis is perpendicular to the horizontal plane, that is, parallel to the axis of the support column 513. At the same time, a driving device 514 is arranged at the lower end of the rotating seat 512, and this driving device 514 is used to drive the rotating seat 512 to rotate. The above-mentioned riveting head 531 is one, and this riveting head 531 is located on the rotation path of the support column 513, that is, the distances between each support column 513 and the rotation axis of the rotating seat 512 are equal. Through the rotation of the rotating seat 512, the support column 513 on the rotating seat 512 can be sequentially moved to directly below the riveting head 531 and be coaxial with the riveting head 531, and then the tops of each valve core can be sequentially subjected to hole expanding operations. It can avoid the errors brought by using multiple riveting heads 531, ensure the consistency and accuracy of each hole expanding operation. In this way, not only the production efficiency is improved, but also the quality stability of the product is guaranteed.

[0095] In this application, both the valve holes and the valve cores are in two groups. Therefore, there are two support columns 513, and they are circumferentially evenly distributed around the axis of the rotating seat 512. By driving the rotating seat 512 to rotate through the driving device 514, the two support columns 513 (valve cores) can be sequentially brought to directly below the riveting head 531 and hole expanding (riveting) can be carried out.

[0096] The above-mentioned riveting head 531 includes a columnar body that can just be inserted into the hole body at the upper end of the valve core. The upper end of this columnar body extends outward in an arc shape, forming a conical structure. The diameter of this conical structure is larger than the diameter of the hole body. Therefore, during the insertion process of the riveting head 531, the edge of the open end of the hole body can be extruded outward and deformed to form a stop portion. The stop portion contacts the end of the nut, realizing the limitation of the nut outside the valve core, preventing it from loosening, and ensuring the long-term stable operation of the valve body.

[0097] In this embodiment, the driving device 514 is a rotary cylinder and can rotate 180 degrees, so that the two support columns 513 can be sequentially moved to the lower end of the riveting head 531 and hole expanding operations can be carried out in sequence. The operation accuracy is high. Using a single riveting head 531 for operation can ensure the accuracy and consistency of the hole expanding operation and guarantee the reliability and stability of the product quality.

[0098] For the convenience of assembly, in the present application, there is also included a mounting base II 511. The mounting base II 511 is in a plate-like structure. The material placing assembly 51 and the material clamping assembly 52 are arranged on the upper surface of the mounting base II 511, and the driving device 514 is arranged at the lower end of the mounting base II 511.

[0099] In order to achieve automatic loading and unloading and then adapt it to the entire assembly system, in the present application, there is also included a material transfer manipulator II 54. The material transfer manipulator II 54 is used to transfer the valve body between the fixture 9 of the conveying device and the material placing assembly 51, that is, to move the valve body to be reamed from the fixture 9 of the conveying device to the support column 513 of the material placing assembly 51, or to move the valve body that has completed the reaming operation from the material placing assembly 51 to the fixture 9 of the conveying device to enter the next process.

[0100] The material transfer manipulator II 54 includes a clamping assembly. The clamping assembly includes a clamp jaw 544 for clamping the valve body and an elastic pressure rod 546 arranged between the two clamp jaws 544. The elastic pressure rod 546 can elastically expand and contract, and the expansion and contraction direction of the elastic pressure rod 546 is parallel to the axis of the support column 513. The end of the elastic pressure rod 546 can contact the upper end of the valve body, and then make the valve body have a downward movement trend, realizing reliable feeding. Especially, it improves the accuracy of placing the valve body on the material placing assembly 51. That is, during placement, it can push the valve body downward and make the valve hole completely sleeved on the support column 513, improving the placement accuracy, and then ensuring the reaming accuracy, avoiding errors in reaming accuracy caused by improper installation, and even being unable to perform the riveting operation, which provides a guarantee for the stable progress of reaming.

[0101] Specifically, the material transfer manipulator II 54 includes a main horizontal slide base 541 horizontally slidably fitted between the conveying device and the material placing assembly 51, a vertical slide base 542 vertically slidably fitted on the main horizontal slide base 541, a secondary horizontal slide base horizontally slidably fitted on the vertical slide base 542, and a clamping assembly provided on the secondary horizontal slide base. At the same time, a first cylinder 5411 is provided for driving the horizontal sliding of the main horizontal slide base 541, a second cylinder 5421 is provided for driving the vertical lifting of the vertical slide base 542, and a third cylinder is provided for driving the horizontal sliding of the secondary horizontal slide base. Among them, the sliding direction of the secondary horizontal slide base is parallel to the sliding direction of the main horizontal slide base 541, which can increase the movement stroke of the clamping assembly, reduce the installation space of the track of the main horizontal slide base, and effectively control the installation space of the entire assembly system; the clamping assembly includes a vertically arranged clamping cylinder 543. The clamping cylinder 543 is a finger cylinder (pneumatic finger). Claws 544 are provided at the two output ends of the clamping cylinder 543 for clamping and grasping the valve body. The claw 544 includes a horizontally arranged clamping plate. A groove corresponding to the side wall of the valve body is opened on the clamping plate for clamping the cylinder body of the valve body. At the same time, a pressing rod hole 5441 through which an elastic pressing rod 546 passes is opened at the center of the clamping plate; a pressing rod fixing seat 545 is provided on the side wall of the clamping cylinder 543. The pressing rod fixing seat 545 is located between the two claws 544. A pressing rod is vertically slidably fitted on the pressing rod fixing seat 545 and a spring with a downward movement tendency for the pressing rod is provided. The pressing rod and the spring form an elastic pressing rod 546. A pressing block is provided at the lower end of the elastic pressing rod 546 and can contact the top of the valve body for pushing the valve body downward during material discharging, thereby ensuring that the valve body can be accurately placed at the target position and improving the material discharging accuracy and reliability.

[0102] In this application, a detection sensor II 56 is further included. The detection sensor II 56 is inclined and faces the material placing assembly 51 for detecting the sealing ring on the valve body on the material placing assembly 51 to determine whether a sealing ring is installed on the valve body, avoiding product defects caused by missing installation and ensuring the product quality of automatic assembly.

[0103] The valve core reaming device is provided with support columns and clamping components, which can achieve double fixation of the valve body, improve the fixation accuracy and stability, provide guarantee for accurate reaming, and further ensure the reaming accuracy; the support column structure is set, which can allow the valve hole to be sleeved in, realize the radial limit of the valve body, and at the same time, can contact the end of the valve core to provide effective support for it, avoid the pressure being transmitted to the valve body during the reaming process and causing the valve body to deform, and ensure the reaming accuracy and product quality; the rotary structure is adopted, which can make the support columns on the rotating seat move to directly below the riveting head in turn, and then ream the tops of each valve core in turn. It can avoid the errors caused by using multiple riveting heads, ensure the consistency and accuracy of each reaming operation, not only improve the production efficiency, but also ensure the quality stability of the product; the feeding manipulator is set, which can realize the automatic feeding and discharging of the valve body, provide convenience for adapting to the assembly system, reduce manual operation, reduce the labor intensity, and further optimize the production process; the elastic pressure rod is set on the feeding manipulator. When discharging, it can push the valve body downward to make the valve hole completely sleeved into the support column, improve the placement accuracy, and then ensure the reaming accuracy, avoid the error of reaming accuracy caused by improper installation, and provide guarantee for the stable progress of reaming; the detection sensor is set to monitor the installation state of the sealing ring in real time, ensure the correct assembly, improve the overall reliability of the product, and realize the efficient and accurate automatic production process.

[0104] Refer to Figures 13 - 17 , the pipe joint assembly device 6 is used to automatically assemble the pipe joint into the valve body of the battery pack water joint and perform pre-pressing fixation, providing a stable foundation for the subsequent pressing process.

[0105] The pipe joint assembly device for the battery pack water joint includes a discharging mechanism 61, a material distributing mechanism 63, a material transferring mechanism 64 and a pre-pressing mechanism 65.

[0106] The discharging mechanism 61 is used for discharging the pipe joint. It includes a vibrating disc and a conveying track. The pipe joints are sent to the conveying track one by one through the vibrating disc to ensure that the pipe joints are arranged in an orderly manner and smoothly enter the material distributing mechanism 63; when discharging, the pipe joints are horizontal, and the length direction is parallel to the discharging direction of the discharging mechanism 61, that is, perpendicular to the sliding direction of the material distributing seat 631. One end of the pipe body of the pipe joint is away from the discharging mechanism 61, and the joint is upward.

[0107] The material distributing mechanism 63 is arranged at the discharging end of the discharging mechanism 61 and is used for distributing the pipe joints. The material distributing mechanism 63 includes a material distributing seat 631, which can achieve horizontal sliding. Its sliding direction is perpendicular to the discharging direction of the discharging mechanism 61. The material distributing seat 631 can move between a first position and a second position. Among them, the first position is used to dock with the discharging mechanism 61, and the material distributing seat 631 at the second position is located on the movement path of the material transferring mechanism 64 and is used to dock with the material transferring mechanism 64 to ensure the accurate transfer of the pipe joint.

[0108] A material distribution groove 6310 is provided on the material distribution seat 631. The shape of the material distribution groove 6310 matches that of the pipe fitting joint. One end thereof facing the discharging mechanism 61 is open, and is used for the pipe fitting joint at the discharging end of the discharging mechanism 61 to enter. A clamping jaw groove is provided at the end of the material distribution groove 6310 facing away (far from) the discharging mechanism 61, and is used for the clamping jaw on the material moving mechanism 64 to pass through and achieve material clamping. The upper end of the material distribution groove 6310 is open, and is used for taking out the pipe fitting joint upward from the material distribution groove 6310. When in the first position, the material distribution groove 6310 on the material distribution seat 631 can be butted against the discharging end of the discharging mechanism 61, and further enable the pipe fitting joint at the discharging end of the discharging mechanism 61 to enter the material distribution groove 6310.

[0109] There are multiple material distribution grooves 6310, and the number thereof is the same as that of the pipe fitting joints on the water connection joint of the battery pack. The multiple material distribution grooves 6310 are arranged in sequence along the sliding direction of the material distribution seat 631. In this embodiment, there are two pipe fitting joints on the water connection joint of the battery pack. Therefore, there are also two material distribution grooves 6310.

[0110] In order to improve the material distribution accuracy and efficiency, in this application, the material distribution mechanism 63 further includes a horizontally sliding limit seat 6321 and a sliding seat 6331. The limit seat 6321 and the sliding seat 6331 are located on the same sliding path. Specifically, they are located on the same slide rail, and their sliding direction is perpendicular to the discharging direction of the discharging mechanism 61. The material distribution seat 631 is installed on the sliding seat 6331. In this embodiment, the material distribution seat 631 is fixed on the top of the sliding seat 6331. The limit seat 6321 can move between the third position and the fourth position, and the sliding seat 6331 can abut against the limit seat 6321 at the third position and the fourth position, and further respectively butt the two material distribution grooves 6310 against the discharging end of the discharging mechanism 61 to realize the respective feeding of the two material distribution grooves 6310.

[0111] Since the air cylinder has two extreme positions, when it needs to pause at the middle position, the requirement for gas is extremely high. At the same time, gas has compressibility. Therefore, the air cylinder cannot achieve precise positioning and stopping at the middle. It can only be realized by a lead screw module. However, the cost of the lead screw module is high and the volume is large, resulting in a need for a large installation space, which will disrupt the reasonable layout of the entire assembly device.

[0112] Therefore, by setting the above-mentioned limit seat 6321, which serves as an abutting end for limiting the sliding seat 6331 (material distribution seat 631). Specifically, the limit seat 6321 has two extreme positions, namely the third position and the fourth position. The third position and the fourth position respectively correspond to the docking of two material distribution grooves 6310 with the discharge end of the discharge mechanism 61. For example, when the limit seat 6321 is in the third position, the first material distribution groove 6310 is docked with the discharge mechanism 61, and when in the fourth position, the second material distribution groove 6310 is docked, ensuring accurate feeding; one end of the sliding seat 6331 serves as an abutting end to contact the limit seat 6321, and its other extreme position is the second position, that is, for docking with the material transfer mechanism 64. At this time, the material distribution groove 6310 is in a waiting state, which is located on the movement path of the material transfer mechanism 64. The material transfer mechanism 64 can pick up materials from the material distribution seat 631 and move them into the fixture 9 at the pipe assembly station, and realize the valve body of the battery pack water joint in the fixture 9.

[0113] The pipe assembly station is a station for assembling pipe connectors on the bottom plate of the battery pack water joint, and this station is set on the conveying device.

[0114] The material distribution mechanism 63 further includes a first cylinder 632 and a second cylinder 633. Among them, the output end of the first cylinder 632 is connected to the limit seat 6321 and is used to drive the limit seat 6321 to slide horizontally. The output end of the second cylinder 633 is connected to the sliding seat 6331 and is used to drive the sliding seat 6331 to slide horizontally. In this application, the second cylinder 633 is fixed on the limit seat 6321, which can greatly reduce the stroke of the second cylinder 633, thereby reducing the overall length and volume of the second cylinder 633 and improving the structural compactness.

[0115] At the same time, limit blocks 634 are provided at the extreme positions of the limit seat 6321 and the sliding seat 6331 for limiting and preventing over-travel. Specifically, there are two limit blocks 634. One is set at the third position of the limit seat 6321 for limiting the third position of the limit seat 6321, and one is set at the second position for limiting the second position of the sliding seat 6331.

[0116] The material transfer mechanism 64 is used to grasp and move the pipe connector. Specifically, it can move the pipe connector on the material distribution seat 631 at the second position to the valve body of the battery pack water joint in the fixture 9 at the pipe assembly station. During the movement, the pipe connector is flipped 180 degrees so that the connector of the pipe connector changes from facing up to facing down and is aligned with the docking end of the valve body.

[0117] In order to improve the assembly efficiency, in this application, the material transfer mechanism 64 can simultaneously grasp multiple pipe connectors in multiple material distribution grooves 6310 and realize synchronous material transfer and assembly; In this embodiment, the material transfer mechanism 64 includes a horizontal sliding seat 642 capable of realizing horizontal sliding and a lifting sliding seat 643 vertically slidably arranged on the horizontal sliding seat 642. The sliding direction of the horizontal sliding seat 642 is perpendicular to the sliding direction of the material distribution seat 631. A rotary cylinder 644 corresponding to the material distribution groove 6310 is arranged on the lifting sliding seat 643. In this embodiment, there are two such rotary cylinders 644. The rotation axis of the rotary cylinder 644 is parallel to the length direction of the material distribution groove 6310, that is, perpendicular to the moving direction of the material distribution seat 631. A clamping cylinder II 645 is arranged at the output end of the rotary cylinder 644. The clamping cylinder II 645 is a finger cylinder, which is horizontally arranged and the output end faces the material distribution seat 631. A clamping jaw is arranged at the output end of the clamping cylinder II 645 for clamping the pipe fitting joint. Specifically, the clamping jaw includes an inner clamping jaw 6451 and an outer clamping jaw 6452 arranged in parallel. Both the inner clamping jaw 6451 and the outer clamping jaw 6452 are horizontally arranged and perpendicular to the sliding direction of the material distribution seat 631. The inner clamping jaw 6451 can be horizontally inserted into the pipe fitting joint. Specifically, it can be inserted into the pipe body of the pipe fitting joint. A clamping area is formed between the inner clamping jaw 6451 and the outer clamping jaw 6452 for clamping the pipe fitting joint. Specifically, it is used to clamp the pipe body of the pipe fitting joint. When grasping the material, the inner clamping jaw 6451 is inserted into the pipe body, and the outer clamping jaw 6452 is located outside the pipe body. Through the closing action of the clamping jaw, the pipe fitting joint is firmly clamped to ensure stable movement without shaking during the material transfer process. And during the material transfer process, the rotary cylinder 644 rotates 180 degrees to turn the joint of the pipe fitting joint from upward to downward, aligning it with the docking end of the valve body to ensure the assembly accuracy. In this application, the sliding direction of the horizontal sliding seat 642 is perpendicular to the sliding direction of the material distribution seat 631.

[0118] In order to improve the grasping accuracy, in this application, an inner clamping surface is provided on the side wall of the inner clamping jaw 6451, which can fit against the inner wall of the pipe fitting joint. An outer clamping surface is provided on the side wall of the outer clamping jaw 6452, which fits against the outer wall of the pipe fitting joint. This can increase the contact area, thereby improving the grasping stability and accuracy, and providing support for the precise assembly of the pipe fitting joint.

[0119] The preloading mechanism 65 is located directly above the fixture 9 at the pipe fitting assembly station and is used to preload the pipe fitting joint onto the valve body to stably connect the pipe fitting joint to the valve body. The preloading mechanism 65 includes a vertically arranged preloading cylinder 651 and a pressing block 652 arranged at the output end of the preloading cylinder 651. A positioning groove corresponding to the pipe fitting joint is provided on the bottom surface of the pressing block 652, which can allow part of the pipe fitting joint to be inserted, thereby improving the preloading stability of the pipe fitting joint and preventing the pipe fitting joint from shifting or tilting during preloading, ensuring the accuracy of the assembly process.

[0120] The pipe joint assembly device 6 can achieve automatic grasping, moving, rotating and pre-pressing of pipe joints, realize precise assembly, improve production efficiency and assembly quality, be applicable to large-scale production lines, and reduce labor costs; a material distribution mechanism is set up, which can achieve automatic material distribution, greatly improve the discharging efficiency, and avoid interference between the material transferring mechanism and the discharging mechanism, improve the overall structural compactness and reasonable layout; the multi-material distribution slots are set up, which can achieve synchronous discharging of multiple pipes, cooperate with the material transferring mechanism to synchronously grasp, and can achieve synchronous assembly of multiple pipes, greatly improve the assembly efficiency, shorten the production cycle, effectively control the assembly consistency of the pipes on the water connector of the battery pack, and have good product quality stability; a sliding limit seat is set up, which can provide abutment and multi-stage limit for the sliding seat, and greatly reduce the manufacturing cost on the premise of ensuring the moving accuracy of the sliding seat; the cylinder of the sliding seat is arranged on the limit seat, which can greatly reduce the stroke of the second cylinder, and then reduce the overall length and volume of the second cylinder, reduce the installation space and improve the structural compactness; a pre-pressing mechanism is set up, which can pre-press the pipe joint to ensure its stable connection with the valve body, reduce assembly errors, facilitate subsequent precise pressing, enable the subsequent pressing process to be carried out without the support of a manipulator, further optimize the assembly process, improve the automation level and reduce production costs; an insertion type jaw structure is adopted, with high clamping stability, which provides guarantee for precise assembly, ensures close fit with the pipe joint during the assembly process, and reduces assembly defects caused by loosening.

[0121] Meanwhile, the present invention also provides an assembly method, which includes the following steps: S1. Loading: Place the bottom plate into the first material placement hole 92 of the fixture 9 at the feeding end of the conveying device manually or mechanically. S2. Riveting and reaming: Use a servo riveting machine to ream the end of the sleeve on the floating seat of the bottom plate to form a first stop portion. S3. Riveting port detection: Use a vision detection device 3 to detect the outer expansion size of the first stop portion and judge whether the outer expansion size is qualified. If it is qualified, proceed to the next station and carry out the next process. If it is unqualified, all subsequent processes will not be executed until it is output from the unqualified channel at the discharging station op110. S4. Floating detection: Fix each floating seat, detect the horizontal floating amount of the bottom plate, including the two-way horizontal floating amount detection of the X-axis and Y-axis of the bottom plate, and judge whether the floating amount is qualified. If it is qualified, proceed to the next station and carry out the next process. If it is unqualified, all subsequent processes will not be executed until it is output from the unqualified channel at the discharging station op110. S5. Valve body loading: Manually assemble the valve body and place it into the second material placement hole 93 of the fixture 9 at the manual loading station op50. S6. Expand the hole of the valve core. Use a servo riveting press to flare the end blind hole of the rod on the valve body to form a second stop portion. S7. Manual assembly. Assemble the valve body onto the bottom plate manually. S8. Pipe fitting assembly. Assemble the pipe fitting onto the valve body and perform pre-pressing and fixing so that the pipe fitting is connected to the valve body and does not fall off. S9. Pipe fitting pressing. Use a servo press to press the pipe fitting onto the valve body with a preset pressure value. S10. Z-axis detection. Fix the floating seat, detect the vertical floating amount of the bottom plate, and determine whether the floating amount is qualified. If it is qualified, output through the qualified channel of the discharging station op110. If it is unqualified, output through the unqualified channel of the discharging station op110. S11. Discharging. The manipulator transfers the battery pack water joint from the conveying device to the corresponding discharging channel and outputs it according to the front-end detection result.

[0122] The automatic assembly system provided by the present invention ensures the assembly accuracy and quality of each component through precise process control and automated detection, significantly improves the production efficiency and product consistency, and further enhances the market competitiveness of the battery pack water joint.

[0123] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A battery pack water connector assembly system, characterized in that: It includes a conveying device, and the following are successively arranged on the conveying path of the conveying device: A riveting station, which is used to flare the end of the sleeve on the floating seat on the bottom plate of the battery pack water joint through a servo riveting machine to form a first stop portion; A vision inspection station, which is used to detect the outer expansion dimension of the first stop portion through a vision inspection device; A floating detection station, which is used to fix each floating seat and detect the horizontal floating amount of the bottom plate, and includes a pushing mechanism for pushing the bottom plate to move horizontally in the X-axis and Y-axis directions; An artificial feeding station, which is used for manually assembling the valve body and feeding; A valve core reaming station, which is used to flare the end blind hole of the rod body on the valve body through a servo riveting machine to form a second stop portion; An artificial assembly station, where the valve body is manually assembled onto the bottom plate; A pipe joint assembly station, which is used to assemble the pipe joint onto the valve body and perform pre-pressing and fixing; A pressing station, which is used to press the pipe joint onto the valve body through a servo press with a preset pressure value; A Z-axis detection station, which is used to fix the floating seat and detect the vertical floating amount of the bottom plate, and includes a pushing mechanism for pushing the bottom plate to move in the Z-axis direction; An unloading station, which is used for unloading the battery pack water joint.

2. The battery pack water joint assembly system according to claim 1, characterized in that: An assembly table is provided on the artificial assembly station. The assembly table is located on one side of the conveying device. A robotic arm, an unloading conveyor belt, and a feeding slide are provided between the assembly table and the conveying device. The robotic arm can move the valve body and the bottom plate on the conveying device to the unloading conveyor belt and convey them towards the assembly table, or move the assembled bottom plate and valve body to the fixture on the conveying device. The feeding slide is used to move the assembled bottom plate and valve body to the picking path of the robotic arm.

3. The battery pack water joint assembly system according to claim 1, wherein: A barcode scanner for tracing is provided at each station.

4. The battery pack water joint assembly system according to claim 1, wherein: A fixture is provided on the conveying device. The fixture is provided with a first material placement hole for placing the bottom plate and a second material placement hole for placing the valve body. A floating seat accommodation hole for accommodating the floating seat and a valve body hole for the valve body to pass through are opened on the bottom surface of the first material placement hole. A jaw slot for the jaws to extend into and grab is opened on the side wall of the first material placement hole.

5. The battery pack water joint assembly system according to claim 1, characterized in that: A Z-axis detection device is provided on the Z-axis detection station. The Z-axis detection device includes a positioning mechanism for radially positioning the fixture at this station, a first support assembly for upwardly supporting the fixture at this station, a second support assembly that can be inserted into the valve body and is used to upwardly support the valve body, a vertical pushing mechanism for pushing the bottom plate downward, and a Z-axis detection device for detecting the downward pressure amount of the bottom plate.

6. The battery pack water joint assembly system according to claim 5, characterized in that: The Z-axis detection device includes a lifting seat located directly below this station and a first lifting cylinder for driving the lifting seat to vertically lift. A positioning support plate is provided on the top of the lifting seat. The upper surface of the positioning support plate serves as a support surface and is used to contact and support the fixture. A number of positioning pins are provided on the support surface, and positioning holes corresponding to the positioning pins are provided on the bottom surface of the fixture. A second lifting cylinder is provided on the lifting seat. The upper end output of the second lifting cylinder is provided with a valve body support column that can upwardly pass through the positioning support plate and be inserted into the valve body on the fixture.

7. The battery pack water joint assembly system according to claim 1, wherein: The pipe joint assembly station is provided with a pipe joint assembly device, and the pipe joint assembly device includes: A discharging mechanism for discharging pipe joints; A material distributing mechanism arranged at the discharging end of the discharging mechanism for material distribution, including a horizontally sliding material distributing seat. The sliding direction of the material distributing seat is perpendicular to the discharging direction of the discharging mechanism and can move between a first position and a second position. When in the first position, the material distributing groove on the material distributing seat can be docked with the discharging end of the discharging mechanism, and the pipe joint at the discharging end of the discharging mechanism can enter the material distributing groove; A material transferring mechanism for transferring the pipe joint on the material distributing seat at the second position to the valve body of the battery pack water joint in the fixture at the pipe assembly station; A pre-pressing mechanism located directly above the fixture at the pipe assembly station for pre-pressing the pipe joint onto the valve body.

8. The battery pack water joint assembly system according to claim 7, wherein: The material distributing mechanism further includes a horizontally sliding limiting seat and a sliding seat, and the limiting seat and the sliding seat are on the same sliding path. The material distributing seat is installed on the sliding seat. The limiting seat can move between a third position and a fourth position, and the sliding seat can abut against the limiting seat at the third position and the fourth position respectively, so that the two material distributing grooves on the material distributing seat are docked with the discharging end of the discharging mechanism.

9. An assembly method of a battery pack water joint assembly system according to any one of claims 1-8, characterized in that, It includes the following steps: S1. Loading: Place the bottom plate into the first material placing hole of the fixture at the feeding end of the conveying device manually or mechanically; S2. Riveting and reaming: Use a servo riveting machine to ream the end of the sleeve on the floating seat of the bottom plate to form a first stop portion; S3. Riveting opening detection: Use a vision detection device to detect the outer reaming size of the first stop portion and judge whether the outer reaming size is qualified; If it is qualified, enter the next station and perform the next process; If it is unqualified, all subsequent processes will not be executed until it is output from the unqualified channel at the discharging station; S4. Floating detection: Fix each floating seat and detect the horizontal floating amount of the bottom plate, including the two-way horizontal floating amount detection of the X-axis and Y-axis of the bottom plate, and judge whether the floating amount is qualified; If it is qualified, enter the next station and perform the next process; If it is unqualified, all subsequent processes will not be executed until it is output from the unqualified channel at the discharging station; S5. Valve body loading: Manually assemble the valve body and place it into the second material placing hole of the fixture at the manual loading station; S6. Spool reaming: Use a servo riveting machine to ream the blind hole at the end of the rod on the valve body to form a second stop portion; S7. Manual assembly: Manually assemble the valve body onto the bottom plate; S8. Pipe joint assembly: Assemble the pipe joint onto the valve body and perform pre-pressing and fixing to make the pipe joint connected to the valve body without falling off; S9. Pipe pressing: Use a servo press to press the pipe joint onto the valve body with a preset pressure value; S10. Z-axis detection: Fix the floating seat and detect the vertical floating amount of the bottom plate, and judge whether the floating amount is qualified; If it is qualified, output from the qualified channel at the discharging station; If it is unqualified, output from the unqualified channel at the discharging station; S11. Discharging: The manipulator transfers the battery pack water joint from the conveying device to the corresponding discharging channel and outputs it according to the front-end detection result.

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