Pressure change detection mechanism of oil injection ring sealing ring assembly line

Abstract

The invention belongs to the technical field of oil injection ring sealing ring assembly, particularly relates to a pressure change detection mechanism of an oil injection ring sealing ring assembly line, and solves the problem that the quality of a final product cannot be ensured as a pressure change test is not performed after the oil injection ring sealing ring is assembled. The pressure change detection mechanism of the oil injection ring sealing ring assembly line comprises a rack, a pressure change test bench and a visual detection bench are arranged on the rack, and the pressure change test bench is slidably connected to the rack and connected with a pressure test bench translation driving assembly. The visual inspection table can reciprocate between a material receiving position used for receiving the oil injection ring with the sealing ring assembled and a pressure change test position below the pressure test assembly, a transferring structure used for transferring the oil injection ring with the pressure change test completed to the visual inspection table is arranged between the visual inspection table and the material receiving position, and the visual inspection assembly is further arranged on the side of the visual inspection table. Effects of effective pressure change testing and visual inspection on the assembled oil injection ring are achieved, the automation degree is high, and the quality of a final finished product is guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of fuel injection ring sealing ring assembly, and in particular relates to a pressure change detection mechanism for a fuel injection ring sealing ring assembly line. Background Art

[0002] With the development of today's society, vigorously promoting new energy projects is the general trend of the automotive industry. The motor oil injection ring is an indispensable part of the motor system of electric vehicles. The oil injection ring is assembled on the outside of both ends of the motor stator, and plays the role of sealing coolant in the radial and axial directions respectively.

[0003] In the current existing technology, there is no mature automated solution for the assembly of the seal ring of the fuel injection ring. Most assembly lines lack an effective and efficient pressure change testing process after the seal ring is assembled. It is impossible to automatically realize the pressure resistance test of the final product, and the product quality cannot be guaranteed. Summary of the invention

[0004] The purpose of the present invention is to address the above-mentioned problems existing in the prior art and to propose a pressure change detection mechanism for an injection ring sealing ring assembly line.

[0005] In order to achieve the purpose of the invention, the following technical solutions can be used: A pressure change detection mechanism for an oil injection ring sealing ring assembly line comprises a frame, on which a pressure change test bench and a visual inspection bench are provided. The pressure change test bench is slidably connected to the frame and is connected to a translational drive assembly of the pressure testing bench. It can reciprocate between a receiving position for receiving an oil injection ring after the sealing ring is assembled and a pressure change test position below the pressure testing assembly. A transfer structure for transferring the oil injection ring after the pressure change test to the visual inspection bench is provided between the visual inspection bench and the receiving position, and a visual inspection assembly is provided on the side of the visual inspection bench.

[0006] The pressure change detection mechanism of the present invention is a part of the fuel injection ring sealing ring assembly line, and is used to perform a pressure change test on the fuel injection ring after the radial sealing ring and the end face sealing ring are assembled, to detect whether its parameters such as pressure resistance are up to standard, and to ensure the qualified rate of finished parts. The fuel injection ring to be tested is placed on a pressure change test bench, and is transferred to the pressure change test position for testing. The pressure test component applies axial downward pressure to the fuel injection ring from above, and the indirect measurement of the deformation amount is achieved through the pressure change of the pressure plate after pressing in a corresponding distance. In addition, a visual inspection table and a visual inspection component are also provided on the frame. By capturing the corresponding image data, the control computer or the monitoring personnel further detect the situation after deformation, and improve the quality of the final output product.

[0007] In the pressure change detection mechanism of the above-mentioned injection ring sealing ring assembly line, the pressure testing component includes a pressure testing machine, and the pressure testing machine is vertically arranged above the frame through a gantry; the pressure testing machine includes a pressure plate arranged on the gantry through a hydraulic system, and a pressure sensor is provided between the pressure plate and the hydraulic system.

[0008] The pressure test assembly is specifically implemented through a pressure testing machine. The pressure plate of the pressure testing machine is used to apply pressure to the injection ring from the upper end surface downward, the hydraulic system provides the downward driving force, and the pressure sensor is used to detect the pressure value between the pressure plate and the injection ring. The pressure testing machine is actually a prior art and will not be further elaborated here.

[0009] In the above-mentioned pressure change detection mechanism of the injection ring sealing ring assembly line, the pressure testing machine and the pressure change test bench are provided with at least two corresponding groups, and the pressure change test benches are arranged along the transfer direction of the transfer structure and can perform pressure change tests respectively.

[0010] Setting up multiple groups of pressure testing machines and pressure change test benches can provide a corresponding number of pressure change test positions, which can be used to test multiple injection rings separately, and each group is independent of each other to avoid mutual interference. In addition, since the pressure change test takes relatively longer time than other assembly processes, setting up multiple pressure change test positions helps to match the rhythm between each process and ensure the efficient operation of the injection ring sealing ring assembly line.

[0011] In the above-mentioned pressure change detection mechanism of the injection ring seal assembly line, the pressure change test bench is slidably connected to the frame through a slide rail, and the pressure test bench translation drive assembly includes a linear drive arranged on the frame. The output end of the linear drive is connected to the pressure change test bench.

[0012] The compression test bench is set up by sliding rails to ensure stable load-bearing capacity while sliding, and the linear drive is used to drive the compression test bench to move smoothly.

[0013] In the above-mentioned pressure change detection mechanism of the fuel injection ring sealing ring assembly line, a press calibration component is provided on the pressure change test bench, and the height of the press calibration component is adapted to the height of the fuel injection ring.

[0014] The press calibration assembly can ensure that the pressure output of the pressure testing machine meets the design requirements, thereby improving the accuracy of the pressure change test. The press calibration assembly is an existing technology and will not be expanded here.

[0015] In the above-mentioned pressure change detection mechanism of the injection ring sealing ring assembly line, the visual inspection platform includes a detection base arranged on the frame and a mounting disc detachably fixed on the detection base, and at least three groups of slidingly connected internal support positioning blocks are circumferentially distributed on the top surface of the mounting disc, and a radial translation drive structure is provided between the mounting disc and the internal support positioning block.

[0016] A plurality of sets of inner-supported positioning blocks are arranged on the mounting disc of the visual inspection table, which achieve the effect of positioning and fixing by expanding from the radial inner side of the injection ring to the outside, thus ensuring the smooth implementation of visual inspection.

[0017] In the pressure change detection mechanism of the above-mentioned injection ring sealing ring assembly line, the radial translation drive structure includes a pneumatic cylinder body arranged at the center of the top surface of the mounting disc, the inner support type positioning block is slidably connected to the mounting disc through a slide rail, and is connected to the power chamber of the pneumatic cylinder body through a connecting slide rod, and the power chamber is connected to the gas charging and discharging assembly; the inner support type positioning block includes an arc-shaped main body, and a support platform is radially extended from the outer side of the arc-shaped main body, the bottom surface of the injection ring is in contact with the top surface of the support platform, and the inner side surface is in contact with the outer side surface of the arc-shaped main body; the mounting disc is provided with a pipeline connection through hole, which is used to make way for the connecting pipeline between the pneumatic cylinder body and the gas charging and discharging assembly.

[0018] The installation disc is provided with an arc-shaped body that can be radially telescopically moved. The outer wall of the arc-shaped body is just in contact with the injection ring to ensure accurate positioning and prevent damage to the injection ring. The movement of the arc-shaped body is achieved by the pneumatic cylinder in a pneumatic manner. The installation disc is provided with a pipeline connection hole so that the connecting pipeline can pass through to achieve the connection between the pneumatic cylinder and the gas charging and discharging assembly. The outer side of the upper end of the arc-shaped body is also provided with an easy-entry chamfer to facilitate the initial positioning of the injection ring when it is lowered vertically. The pneumatic cylinder is used to drive the movement of the arc-shaped body in a pneumatic manner. This is a prior art and will not be expanded here.

[0019] In the above-mentioned pressure change detection mechanism of the fuel injection ring sealing ring assembly line, the visual inspection component includes at least one group of detection cameras fixed on the frame, and the detection cameras face the visual inspection platform; two groups of relatively arranged positioning rollers are also provided on both sides of the visual inspection platform, and each group of positioning rollers includes two, and the positioning rollers can be horizontally rotatably connected to the roller seat on one side of the visual inspection platform near the roller seat, and the roller seat can be radially movably slidably connected to the roller base, and is connected to the roller translation driver, and the roller base can be vertically lifted and lowered and slidably connected to the frame, and is connected to the roller lifting driver; an elastic rough surface is provided on the side wall of the positioning roller, and a roller rotation drive component is also provided between its wheel axle and the roller seat, which is used to drive the rotation of the positioning roller to drive the fuel injection ring to rotate; a lighting component is also provided on the frame, and the lighting component faces the visual inspection platform.

[0020] The positioning roller once again positions the injection ring from the radial outside. Moreover, the outer wall of the positioning roller that contacts the outer wall of the injection ring is provided with an elastic rough surface that can increase the friction. The elastic rough surface has a certain elasticity and can adaptively deform the small convex parts on the outer wall of the injection ring, thereby ensuring stable friction transmission while avoiding damage to the injection ring. The rotation of the positioning roller can achieve the effect of driving the injection ring to rotate. During the rotation process, the detection camera captures relevant image data. Moreover, the roller seat can be raised and lowered, so that for different models of injection rings, the positioning roller can be raised and lowered to a suitable height to ensure that it matches the position suitable for contact with the outer side of the injection ring and improve compatibility. In order to improve the clarity of the captured image, a lighting component is also specially provided on the frame to ensure the smooth implementation of visual inspection.

[0021] Furthermore, non-powered rollers or other smooth structures that facilitate the rotation of the injection ring are arranged circumferentially on the outer side of the arc-shaped main body, which helps the injection ring to be driven by the positioning roller to rotate smoothly. Of course, the smooth structure is in contact with the circumferential surface of the inner side of the injection ring without reinforcement ribs, or the smooth structure has a certain radial elastic expansion and contraction ability, and can adaptively expand and contract when encountering a raised part.

[0022] In the above-mentioned pressure change detection mechanism of the fuel injection ring seal assembly line, the transfer structure includes a clamping claw seat, and two parallel horizontally extending strip claw bodies are slidably connected to the clamping claw seat. The two strip claw bodies are connected to the double-head synchronous cylinder and can be closed to clamp and fix the fuel injection ring; Alternatively, at least three L-shaped clamping jaws evenly distributed in the circumference and extending downward are slidably connected to the clamping jaw seat, and the upper ends of the L-shaped clamping jaws are connected to the pneumatic drive structure and can be radially closed to clamp the fuel injection ring; The clamping jaw seat is slidably connected to the clamping jaw slide table in a vertical lifting manner and is connected to the clamping jaw lifting drive assembly. The clamping jaw seat is slidably connected to the frame in a horizontally movable manner and is connected to the clamping jaw translation drive assembly.

[0023] The transfer structure specifically grabs the injection ring from the radial outside by clamping through the L-shaped clamps arranged in a ring or the parallel bar-shaped clamps to avoid interference with the inner support positioning block on the visual inspection table. The clamp seat can be raised and lowered and moved horizontally to achieve the function of transferring the injection ring. Moreover, the transfer structure can be set in two groups, which are used for transfer between the pressure change test position and the visual inspection table, and for grabbing materials from the visual inspection table.

[0024] Specifically, the pneumatic drive structure includes a pneumatic cylinder body of the clamping jaw, the horizontal section of the L-shaped clamping jaw is slidably connected to the pneumatic cylinder body, and a power chamber is provided between the two sections, and the power chamber is connected to the gas charging and discharging assembly. The clamping jaw slide is slidably connected to the upper part of the frame through a slide rail, and the clamping jaw translation drive assembly includes a linear motor provided on the frame and the output end of which is connected to the clamping jaw slide. The clamping jaw lifting drive assembly includes a clamping jaw lifting cylinder whose cylinder body is vertically fixed on the clamping jaw slide, and the clamping jaw seat is provided on the output end of the clamping jaw lifting cylinder.

[0025] In the pressure change detection mechanism of the above-mentioned injection ring sealing ring assembly line, two groups of discharge conveyor belts are also provided in the downstream direction of the transfer structure, at least one group of discharge conveyor belts is used to output NG materials, and at least one group of discharge conveyor belts is used to output qualified materials; the upstream end of the discharge conveyor belt is connected to the bottom of the transfer path of the transfer structure.

[0026] The discharging conveyor belt is used to output the assembled and tested fuel injection rings. Two groups of discharging conveyor belts are set up to realize the separate output of NG parts and qualified parts to ensure the quality of the final product.

[0027] Compared with the prior art, the present invention mainly has the following advantages: 1. This pressure change detection mechanism is used to perform pressure change test on the injection ring after the radial sealing ring and the end face sealing ring are assembled to ensure the qualified rate of the finished parts. In addition, the frame is also equipped with a visual inspection table and a visual inspection component to further detect the deformation situation by capturing the corresponding image data to improve the quality of the final output product.

[0028] 2. Multiple pressure change test stations can be used to test multiple injection rings respectively, and each group is independent of each other to avoid mutual interference. In addition, setting up multiple pressure change test stations helps to match the rhythm between each process and ensure the efficient operation of the injection ring sealing ring assembly line.

[0029] 3. The positioning roller positions the injection ring again from the radial outside. The rotation of the positioning roller drives the injection ring to rotate. During the rotation, the detection camera captures relevant image data to achieve 360-degree circumferential detection. Moreover, the roller seat can be raised and lowered, so that for different types of injection rings, the positioning roller can be raised and lowered to a suitable height to ensure that it matches the suitable contact position with the outside of the injection ring to improve compatibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of the pressure change detection mechanism provided by the present invention; Figure 2 It is a structural schematic diagram of a visual inspection platform and a visual inspection component provided by the present invention; Figure 3It is a schematic diagram of the transfer structure provided by the present invention.

[0031] In the figure, the pressure test bench D2, the visual inspection bench D3, the pressure test bench translation drive assembly D4, the transfer structure D5, the pressure testing machine D6, the gantry D7, the pressure plate D8, the press calibration assembly D9, the detection base D10, the installation disc D11, the internal support positioning block D12, the radial translation drive structure D13, the pneumatic cylinder D14, the connecting slide rod D15, the gas charging and discharging assembly D16, the arc body D17, the support platform D18, the pipeline connection hole D19, the detection camera D20, the fixed Position roller D21, roller translation driver D22, roller lifting driver D23, lighting assembly D24, clamping jaw seat D25, bar-shaped jaw body D26, double-head synchronous cylinder D27, L-shaped clamping jaw D28, pneumatic drive structure D29, clamping jaw lifting drive assembly D30, clamping jaw translation drive assembly D31, clamping jaw pneumatic cylinder body D32, discharge conveyor belt D33, visual inspection assembly D34, pressure test assembly D35, hydraulic system D36, roller seat D37, roller base D38, Oil injection ring 100 and frame 400. DETAILED DESCRIPTION

[0032] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0033] First, a brief description of the application example is given. The fuel injection ring sealing ring assembly line related to the present invention is a project related to Tesla, and it also involves a product on the motor system, namely the motor fuel injection ring. This project is equipped with two car models. The products are installed on the outside of the two ends of the motor stator, and play the role of sealing coolant in the radial and axial directions respectively. As Tesla's popular models on sale, these two models have huge market size and business volume. The annual sales volume of this product is 1 million pieces, and the annual output value reaches RMB 32 million; at the same time, it has driven BYD, Geely, Qingshan, Weirui, Wuxi Xingqu, Tianjin Weipai and other customers to designate fuel injection ring projects. The pressure change detection mechanism mainly involved in the present invention is a part of the fuel injection ring sealing ring assembly line.

[0034] Specific implementation examples Figure 1-3 As shown, the pressure change detection mechanism of the fuel injection ring sealing ring assembly line includes a frame 400, on which a pressure change test bench D2 and a visual inspection bench D3 are provided. The pressure change test bench D2 is slidably connected to the frame 400 and is connected to the pressure test bench translation drive assembly D4. It can reciprocate between a receiving position for receiving the fuel injection ring 100 after the sealing ring assembly is completed and a pressure change test position below the pressure test assembly D35. A transfer structure D5 for transferring the fuel injection ring 100 after the pressure change test to the visual inspection bench D3 is provided between the visual inspection bench D3 and the receiving position, and a visual inspection assembly D34 is provided on the side of the visual inspection bench D3.

[0035] Specifically, the pressure change detection mechanism of the present invention is a part of the injection ring sealing ring assembly line, and is used to perform a pressure change test on the injection ring 100 after the radial sealing ring and the end face sealing ring are assembled, to detect whether its parameters such as pressure resistance are up to standard, and to ensure the qualified rate of finished parts. The injection ring 100 to be tested is placed on the pressure change test bench D2, and is transferred to the pressure change test position for testing. The pressure test component D35 applies axial downward pressure to the injection ring 100 from above, and the pressure change of the pressure plate D8 after pressing in a corresponding distance realizes indirect measurement of the deformation amount. In addition, a visual inspection bench D3 and a visual inspection component D34 are also provided on the frame 400. By capturing the corresponding image data, the control computer or the monitoring personnel further detect the situation after deformation, thereby improving the quality of the final output product.

[0036] like Figure 1 As shown, the pressure test assembly D35 includes a pressure tester D6, which is vertically arranged above the frame 400 through a gantry D7; the pressure tester D6 includes a pressure plate D8 arranged on the gantry D7 through a hydraulic system D36, and a pressure sensor is provided between the pressure plate D8 and the hydraulic system D36. The pressure tester D6 and the pressure change test bench D2 are provided with two corresponding groups, and the pressure change test bench D2 is arranged along the transfer direction of the transfer structure D5, and can perform pressure change tests respectively. The pressure change test bench D2 is slidably connected to the frame 400 through a slide rail, and the pressure test bench translation drive assembly D4 includes a linear drive arranged on the frame 400. The output end of the linear drive is connected to the pressure change test bench D2. A press calibration assembly D9 is provided on the pressure change test bench D2, and the height of the press calibration assembly D9 is adapted to the height of the injection ring 100.

[0037] Specifically, the pressure test assembly D35 is implemented by the pressure tester D6. The pressure plate D8 of the pressure tester D6 is used to apply pressure to the injection ring 100 from the upper end surface downward. The hydraulic system D36 provides the downward driving force, and the pressure sensor is used to detect the pressure value between the pressure plate D8 and the injection ring 100. The pressure tester D6 and the pressure change test bench D2 are set in multiple groups, which can provide a corresponding number of pressure change test positions, and can respectively test multiple injection rings 100. Moreover, each group is independent of each other to avoid mutual interference. In addition, since the pressure change test takes a relatively long time compared with other assembly processes, setting up multiple pressure change test positions helps to match the beat between each process and ensure the efficient operation of the injection ring sealing ring assembly line. The pressure change test bench D2 is set by sliding on a slide rail to ensure that it has a stable load-bearing capacity while sliding, and the linear drive is used to specifically drive the smooth movement of the pressure change test bench D2. The press calibration assembly D9 can ensure that the pressure output of the pressure tester D6 meets the design requirements, thereby improving the accuracy of the pressure change test.

[0038] like Figure 1 , 2 As shown, the visual inspection platform D3 includes an inspection base D10 arranged on a frame 400 and a mounting disc D11 detachably fixed on the inspection base D10, and four groups of slidingly connected internally supported positioning blocks D12 are circumferentially distributed on the top surface of the mounting disc D11, and a radial translation drive structure D13 is provided between the mounting disc D11 and the internally supported positioning blocks D12. The radial translation driving structure D13 includes a pneumatic cylinder body D14 arranged at the center of the top surface of the mounting disc D11, and the internal support positioning block D12 is slidably connected to the mounting disc D11 through a slide rail, and is connected to the power chamber of the pneumatic cylinder body D14 through a connecting slide rod D15, and the power chamber is connected to the gas charging and discharging component D16; the internal support positioning block D12 includes an arc-shaped main body D17, and a supporting platform D18 radially extends outward from the outer side of the arc-shaped main body D17, the bottom surface of the oil injection ring 100 is in contact with the top surface of the supporting platform D18, and the inner side surface is in contact with the outer side surface of the arc-shaped main body D17; a pipeline connection through hole D19 is provided on the mounting disc D11, which is used to make way for the connecting pipeline between the pneumatic cylinder body D14 and the gas charging and discharging component D16.

[0039] Specifically, the mounting disc D11 of the visual inspection table D3 is provided with multiple groups of internally supported positioning blocks D12, which are positioned and fixed by stretching outward from the radial inner side of the fuel injection ring 100, ensuring the smooth realization of visual inspection. The mounting disc D11 is provided with an arc-shaped body D17 that can be radially telescopically moved. The outer wall of the arc-shaped body D17 is just in contact with the fuel injection ring 100, ensuring accurate positioning and preventing damage to the fuel injection ring 100. The movement of the arc-shaped body D17 is pneumatically realized by the pneumatic cylinder D14. The mounting disc D11 is provided with a pipeline connection hole D19 so that the connecting pipeline can pass through to realize the connection between the pneumatic cylinder D14 and the gas charging and discharging assembly D16. The outer side of the upper end of the arc-shaped body D17 is also provided with an easy-entry chamfer to facilitate the initial positioning of the fuel injection ring 100 when it is lowered vertically.

[0040] like Figure 2As shown, the visual inspection component D34 includes a group of inspection cameras D20 fixed on the frame 400, and the inspection camera D20 faces the visual inspection platform D3; two groups of relatively arranged positioning rollers D21 are also provided on both sides of the visual inspection platform D3, and each group of positioning rollers D21 includes two, the positioning rollers D21 can be horizontally rotatably connected to the roller seat D37 on one side of the visual inspection platform D3 near the roller seat D37, the roller seat D37 can be radially movably slidably connected to the roller base D38, and is connected to the roller translation driver D22, the roller base D38 can be vertically lifted and slidably connected to the frame 400, and is connected to the roller lifting driver D23; an elastic rough surface is provided on the side wall of the positioning roller D21, and a roller rotation drive component is also provided between its wheel axle and the roller seat D37, which is used to drive the rotation of the positioning roller D21 to drive the injection ring 100 to rotate; a lighting component D24 is also provided on the frame 400, and the lighting component D24 faces the visual inspection platform D3.

[0041] Specifically, the positioning roller D21 once again positions the injection ring 100 from the radial outside, and the outer wall of the positioning roller D21 that contacts the outer wall of the injection ring 100 is provided with an elastic rough surface that can increase the friction force. The elastic rough surface has a certain elasticity and can adaptively deform the small convex parts on the outer wall of the injection ring 100 that are in contact, so as to ensure stable friction transmission while avoiding damage to the injection ring 100. The rotation of the positioning roller D21 can achieve the effect of driving the injection ring 100 to rotate. During the rotation process, the detection camera D20 captures relevant image data. Moreover, the roller seat D37 can be raised and lowered, so that for different models of injection rings 100, the positioning roller D21 can be raised and lowered to a suitable height to ensure that it matches the position suitable for contact with the outer side of the injection ring 100 and improve compatibility. In order to improve the clarity of the captured image, a lighting component D24 is also specially provided on the frame 400 to ensure the smooth implementation of visual inspection.

[0042] As a further optimization, unpowered rollers are arranged circumferentially on the outer side of the arc-shaped main body D17, which helps the oil injection ring 100 to be driven by the positioning roller D21 to rotate smoothly.

[0043] like Figure 1 , 3As shown, the transfer structure D5 includes two clamping jaws D25, the first clamping jaws D25 moves between the pressure change test position and the visual inspection position, and two parallel horizontally extending strip-shaped jaws D26 are slidably connected thereon, and the two strip-shaped jaws D26 are connected to the double-head synchronous cylinder D27, and can be closed together to clamp and fix the injection ring 100; the second clamping jaws D25 moves between the visual inspection position and the discharge conveyor D32, and four circumferentially evenly distributed and downwardly extending L-shaped jaws D28 are slidably connected thereon, and the upper end of the L-shaped jaws D28 is connected to the pneumatic drive structure D29, and can be radially closed to clamp the injection ring 100; the clamping jaws D25 can be slidably connected to the clamping jaw slide in a vertically lifting manner, and is connected to the clamping jaw lifting drive assembly D30, and the clamping jaws D25 can be slidably connected to the frame 400 in a horizontally movable manner, and is connected to the clamping jaw translation drive assembly D31.

[0044] The transfer structure D5 specifically grabs the injection ring 100 from the radially outer side in a clamping manner through the L-shaped clamping claws D28 arranged in an annular manner or the bar-shaped clamping claws D26 arranged in parallel, so as to avoid interference with the internal support positioning block D12 on the visual inspection table D3. The clamping claw seat D25 can be raised and lowered and moved horizontally to realize the function of transferring the injection ring 100. Moreover, the transfer structure D5 is provided with two groups, which are respectively used for transfer between the pressure change test position and the visual inspection table D3, and for grabbing materials from the visual inspection table D3. There is a difference in height between the two groups of transfer structures D5. The clamping claw seat D25 of the first group of transfer structures D5 slides on the table surface of the frame 400, and the other group slides on the upper part, so that the two groups of slide rails have a cross in travel to ensure smooth transfer.

[0045] In this embodiment, the pneumatic drive structure D29 includes a pneumatic cylinder body D32 of the clamping jaws, and the horizontal section of the L-shaped clamping jaws D28 is slidably connected to the pneumatic cylinder body D14, and a power chamber is provided therebetween, and the power chamber is connected to the gas charging and discharging assembly D16. The clamping jaw slide is slidably connected to the upper part of the frame 400 through a slide rail, and the clamping jaw translation drive assembly D31 includes a linear motor provided on the frame 400 and the output end of which is connected to the clamping jaw slide. The clamping jaw lifting drive assembly D30 includes a clamping jaw lifting cylinder whose cylinder body is vertically fixed on the clamping jaw slide, and a clamping jaw seat D25 is provided on the output end of the clamping jaw lifting cylinder. Two sets of discharge conveyor belts D32 are also provided in the downstream direction of the transfer structure D5, one set of discharge conveyor belts D32 is used to output NG materials, and the other set of discharge conveyor belts D32 is used to output qualified materials; the upstream end of the discharge conveyor belt D32 is docked below the transfer path of the transfer structure D5. It can realize the separate output of NG parts and qualified parts to ensure the quality of the final product.

[0046] Specific working principle: After the radial sealing ring and the end face sealing ring of the fuel injection ring 100 are assembled, they are transferred to the pressure change test bench D2, and then the pressure change test bench D2 moves to the bottom of the pressure testing machine D6, and the pressure plate D8 descends and presses on the upper end of the fuel injection ring 100, and the pressure sensor transmits the corresponding pressure data and stroke data to the control computer, and the control computer calculates and analyzes the qualified situation of the pressure change test. After the test is completed, the pressure change test bench D2 moves out of the pressure test and below, and the transfer structure D5 transfers the pressure-changed fuel injection ring 100 to the visual inspection bench D3, and then the internal support positioning block D12 moves radially outward, and the unpowered rotating wheel thereon contacts the inner wall of the fuel injection ring 100, and at the same time, the positioning roller D21 moves radially inward and sticks to the outer wall of the fuel injection ring 100. The rotation of the positioning roller D21 drives the fuel injection ring 100 to rotate, and the detection camera D20 obtains the corresponding image data under the light of the light component D24 and transmits it to the control computer, which calculates and analyzes it. After the visual inspection is completed, the internal support positioning block D12 and the positioning roller D21 are reset, and the second group of transfer structures D5 transfers the injection ring 100 to the corresponding discharge conveyor belt D33 according to the inspection results, and the compression test is completed.

[0047] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A pressure change detection mechanism for an oil injection ring seal assembly line, comprising a frame (400), characterized in that: The frame (400) is provided with a pressure change test bench (D2) and a visual inspection bench (D3); the pressure change test bench (D2) is slidably connected to the frame (400) and is connected to a pressure test bench translation drive assembly (D4), and can reciprocate between a receiving position for receiving an injection ring (100) after the sealing ring is assembled and a pressure change test position below the pressure test assembly (D35); a transfer structure (D5) for transferring the injection ring (100) after the pressure change test to the visual inspection bench (D3) is provided between the visual inspection bench (D3) and the receiving position; and a visual inspection assembly (D34) is provided on the side of the visual inspection bench (D3).

2. The pressure change detection mechanism of the fuel injection ring seal assembly line according to claim 1 is characterized in that: The pressure testing assembly (D35) comprises a pressure testing machine (D6), and the pressure testing machine (D6) is vertically arranged above the frame (400) via a gantry (D7); The pressure testing machine (D6) includes a pressure plate (D8) arranged on a gantry (D7) through a hydraulic system (D36), and a pressure sensor is provided between the pressure plate (D8) and the hydraulic system (D36).

3. The pressure change detection mechanism of the fuel injection ring seal assembly line according to claim 2 is characterized in that: The pressure testing machine (D6) and the pressure change test bench (D2) are provided with at least two groups corresponding to each other. The pressure change test bench (D2) is arranged along the transfer direction of the transfer structure (D5) and can perform pressure change tests respectively.

4. The pressure change detection mechanism of the fuel injection ring seal assembly line according to claim 2 is characterized in that: The pressure change test bench (D2) is slidably connected to the frame (400) via a slide rail, and the pressure test bench translation drive assembly (D4) includes a linear drive arranged on the frame (400), and the output end of the linear drive is connected to the pressure change test bench (D2).

5. The pressure change detection mechanism of the fuel injection ring seal assembly line according to claim 1 is characterized in that: The pressure change test bench (D2) is provided with a press calibration component (D9), and the height of the press calibration component (D9) is adapted to the height of the oil injection ring (100).

6. The pressure change detection mechanism of the fuel injection ring seal assembly line according to claim 1 is characterized in that: The visual inspection platform (D3) comprises an inspection base (D10) arranged on a frame (400) and a mounting disc (D11) detachably fixed to the inspection base (D10), at least three groups of slidably connected internally supported positioning blocks (D12) are circumferentially distributed on the top surface of the mounting disc (D11), and a radial translation drive structure (D13) is provided between the mounting disc (D11) and the internally supported positioning blocks (D12).

7. The pressure change detection mechanism of the fuel injection ring seal assembly line according to claim 6 is characterized in that: The radial translation driving structure (D13) comprises a pneumatic cylinder (D14) arranged at the center of the top surface of the mounting disc (D11), the inner support type positioning block (D12) is slidably connected to the mounting disc (D11) through a slide rail, and is connected to the power chamber of the pneumatic cylinder (D14) through a connecting slide rod (D15), and the power chamber is connected to the gas charging and discharging assembly (D16); The inner support type positioning block (D12) comprises an arc-shaped main body (D17), a support platform (D18) radially extends outward from the outer side of the arc-shaped main body (D17), the bottom surface of the oil injection ring (100) is in contact with the top surface of the support platform (D18), and the inner side surface is in contact with the outer side surface of the arc-shaped main body (D17); The mounting disc (D11) is provided with a pipeline connection hole (D19) for making way for the connecting pipeline between the pneumatic cylinder (D14) and the gas charging and discharging assembly (D16).

8. The pressure change detection mechanism of the fuel injection ring seal assembly line according to claim 1 is characterized in that: The visual inspection component (D34) comprises at least one set of inspection cameras (D20) fixed on the frame (400), and the inspection cameras (D20) face the visual inspection platform (D3); Two groups of positioning rollers (D21) are arranged opposite to each other on both sides of the visual inspection platform (D3), and each group of positioning rollers (D21) has at least two positioning rollers (D21). The positioning rollers (D21) are horizontally rotatably connected to a roller seat (D37) on one side near the visual inspection platform (D3). The roller seat (D37) is slidably connected to a roller base (D38) in a radially movable manner and is connected to a roller translation driver (D22). The roller base (D38) is slidably connected to a frame (400) in a vertically lifting manner and is connected to a roller lifting driver (D23). The side wall of the positioning roller (D21) is provided with an elastic rough surface, and a roller rotation drive assembly is provided between the wheel shaft and the roller seat (D37) for driving the positioning roller (D21) to rotate so as to drive the oil injection ring (100) to rotate; The frame (400) is also provided with a light assembly (D24), and the light assembly (D24) faces the visual inspection table (D3).

9. The pressure change detection mechanism of the fuel injection ring seal assembly line according to claim 1, characterized in that: The transfer structure (D5) comprises a clamping claw seat (D25), and two parallel and horizontally extending strip-shaped claw bodies (D26) are slidably connected to the clamping claw seat (D25). The two strip-shaped claw bodies (D26) are connected to a double-head synchronous cylinder (D27) and can be closed together to clamp and fix the injection ring (100); Alternatively, the clamping jaw seat (D25) is slidably connected with at least three L-shaped clamping jaws (D28) evenly distributed in the circumference and extending downward, and the upper ends of the L-shaped clamping jaws (D28) are connected to the pneumatic drive structure (D29) and can be radially closed to clamp the injection ring (100); The clamping jaw seat (D25) is slidably connected to the clamping jaw slide table in a vertically movable manner, and is connected to the clamping jaw lifting drive assembly (D30). The clamping jaw seat (D25) is slidably connected to the frame (400) in a horizontally movable manner, and is connected to the clamping jaw translation drive assembly (D31).

10. The pressure change detection mechanism of the fuel injection ring seal assembly line according to any one of claims 1 to 9, characterized in that: Two groups of discharge conveyor belts (D32) are also provided in the downstream direction of the transfer structure (D5), at least one group of discharge conveyor belts (D32) is used to discharge NG materials, and at least one group of discharge conveyor belts (D32) is used to discharge qualified materials; The upstream end of the discharge conveyor belt (D32) is docked below the transfer path of the transfer structure (D5).

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