Airtightness detection equipment

Abstract

The utility model discloses air tightness detection equipment which is used for detecting the air tightness of a material part. The material part comprises a cavity, a first oil duct arranged at a first position of the material part and a second oil duct arranged at a second position of the material part. The airtightness detection device comprises a rotating disc, a plurality of stations arranged in the axial direction of the rotating disc, a reference platform, a first leak detector, a second leak detector and an inflation device. The reference platform is arranged on the rotary table and used for supporting the material parts, and the rotary table can drive the material parts on the reference platform to pass through the second station and the third station; the first leak detector is arranged at the second station and is used for detecting the air tightness of the cavity and the first oil duct; the second leak detector is arranged at the third station and is used for detecting the air tightness of the cavity and the second oil duct at the same time; and the air charging device is used for charging air into the material part. According to the utility model, the airtightness detection process can be simplified, and the airtightness detection efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to airtightness detection field, especially airtightness detection equipment. BACKGROUND

[0002] Airtightness detection is a very important link in the production and processing of automobile parts, which is not only related to the quality, safety and cost of products, but also is a key factor for enterprises to maintain market competitiveness. Most of the automobile parts are designed with oil channels, and the number of oil channels is set to be multiple, such as end cover. The whole cavity of the end cover and the oil channel set on the end cover and communicating inside and outside the end cover need to be detected for airtightness to prevent oil leakage.

[0003] However, due to the number and position design requirements of the oil channel, airtightness detection needs to be carried out on each oil channel in turn, which leads to complicated airtightness detection process and makes it difficult to complete detection quickly and effectively, and the production efficiency is low. UTILITY MODEL CONTENT

[0004] In view of the deficiencies of the prior art, the utility model provides airtightness detection equipment, which can simplify the airtightness detection process and improve the efficiency of airtightness detection.

[0005] The utility model realizes the following technical scheme:

[0006] An airtightness detection equipment is used for detecting the sealing property of a material piece, the material piece includes a cavity, a first oil channel and a second oil channel communicating with the cavity, the first oil channel is arranged at a first position of the material piece, the second oil channel is arranged at a second position of the material piece, and the external openings of the first oil channel and the second oil channel are both plugged by sealing plugs;

[0007] The airtightness detection equipment includes:

[0008] A turntable;

[0009] A plurality of stations, the plurality of stations are arranged in sequence along the circumference of the turntable, and the plurality of stations include a second station and a third station;

[0010] A reference platform, the reference platform is arranged on the turntable for supporting the material piece, and the turntable can drive the material piece on the reference platform to pass through the second station and the third station;

[0011] A first leak detector, the first leak detector is arranged at the second station and detects the airtightness value of the cavity and the first oil channel as M1;

[0012] A second leak detector, the second leak detector is arranged at the third station and detects the airtightness value of the cavity and the second oil channel as M2;

[0013] A motor, the motor drives the turntable to rotate;

[0014] The inflating device is used for inflating the inside of the workpiece; and

[0015] The industrial computer is signal connected with the first leak detector, the second leak detector, the motor and the inflating device.

[0016] Further, the workpiece further comprises a third oil channel and a fourth oil channel, and the outside openings of the third oil channel and the fourth oil channel are blocked by the sealing plugs; the third oil channel and the fourth oil channel are arranged at the first position of the workpiece and correspondingly arranged with the first leak detector, or the third oil channel and the fourth oil channel are arranged at the second position of the workpiece and correspondingly arranged with the second leak detector.

[0017] Further, the reference platform is internally provided with an air inlet channel, an inlet end of the air inlet channel is connected with the inflating device, and an outlet end of the air inlet channel is communicated with the cavity.

[0018] Further, the inflating device comprises an inflating main pipe and first and second branch pipes connected with the inflating main pipe, the first branch pipe is arranged at the second station, and the second branch pipe is arranged at the third station.

[0019] Further, the air tightness detection equipment further comprises first and second installation air cylinders;

[0020] When the workpiece reaches the second station, the first installation air cylinder drives the first branch pipe to be communicated with the air inlet channel;

[0021] When the workpiece reaches the third station, the second installation air cylinder drives the second branch pipe to be communicated with the air inlet channel.

[0022] Further, the reference platform is further provided with a leak detection opening communicated with the air inlet channel;

[0023] When the workpiece reaches the second station, the first leak detector is communicated with the leak detection opening;

[0024] When the workpiece reaches the third station, the first leak detector is communicated with the leak detection opening.

[0025] Further, the air tightness detection equipment further comprises third and fourth installation air cylinders;

[0026] When the workpiece reaches the second station, the third installation air cylinder drives the first leak detector to be communicated with the leak detection opening;

[0027] When the workpiece reaches the third station, the fourth installation air cylinder drives the second leak detector to be communicated with the leak detection opening.

[0028] Further, the plurality of stations further comprises a first station, when the reference platform is located at the first station, the reference platform is used to receive an external material piece to be tested, a sensor is installed at the first station, and the sensor is in signal connection with the industrial computer and is used to detect whether there is a material piece on the reference platform at the first station.

[0029] Further, the plurality of stations further comprises a fourth station, a laser marking machine and a code scanning gun are arranged at the fourth station, when the material piece reaches the fourth station, the laser marking machine is used to mark the material piece after the air tightness detection, and the code scanning gun is used for code scanning confirmation.

[0030] When the detection results of the first leak detector and the second leak detector are both qualified, the laser marking machine prints a green seal;

[0031] When the detection results of the first leak detector and / or the second leak detector are unqualified, the air tightness detection equipment alarms.

[0032] Further, the number of reference platforms is four, and the four reference platforms rotate between the first station, the second station, the third station and the fourth station.

[0033] Further, the second station, the third station and the fourth station are each provided with a pressing assembly, which is located directly above the material piece and is used to press the material piece on the reference platform.

[0034] Further, the pressing assembly at the second station and the third station is provided with a sealing piece, which abuts against the edge of the top opening of the material piece when the pressing assembly presses the material piece.

[0035] Further, the reference platform comprises an inner cavity support block and an outer wall limiting block, the inner cavity support block is used to provide a force for supporting the material piece in the Z-axis direction, and the outer wall limiting block is used to limit the material piece to avoid the material piece from deviating in the XY plane.

[0036] Further, the reference platform is further provided with a plurality of sealing strips, which abut against the lower edge of the material piece.

[0037] Further, the reference platform is fixedly connected with the turntable through a floating support table.

[0038] Further, the air tightness detection equipment further comprises a fixed disc, the fixed disc is fixedly connected with the stator part of the motor, the turntable is fixedly connected with the rotor part of the motor and can rotate around the fixed disc.

[0039] Further, the third mounting cylinder and the fourth mounting cylinder are arranged on the fixed disc.

[0040] Further, the air tightness detection equipment further comprises a flow detection assembly for testing the flow of a specific hole of the material piece.

[0041] Compared with the prior art, the utility model has the advantages of:

[0042] 1, third oil channel and fourth oil channel are arranged at the second position of the material piece and adjacent to the second oil channel, and the cavity of the material piece and the second oil channel, third oil channel and fourth oil channel adjacent to the position are detected simultaneously by using the second leak detector, so that the leak detection process is simplified, and the airtightness detection efficiency is improved.

[0043] 2, by being provided with second, third station, can simultaneously detect the cavity of the material piece at the second station and the first oil channel, the cavity of the material piece at the third station and the second oil channel, third oil channel and fourth oil channel, can effectively improve the detection efficiency.

[0044] 3, by setting up the carousel and connecting the first station, second station, third station and fourth station, that is, using the circular transmission track, the synchronous work of multiple stations in the same time can be realized, so that the detection time is greatly shortened, and the airtightness detection efficiency is improved, and the installation space is saved, and the material piece needs not to be manually transferred to different stations, so that the risk of the material piece being damaged is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0045] Figure 1 It is a three-dimensional assembly view of airtightness detection equipment of an embodiment of the utility model;

[0046] Figure 2 It is a partial three-dimensional assembly view of airtightness detection equipment of an embodiment of the utility model;

[0047] Figure 3 It is a partial structure schematic view of airtightness detection equipment of an embodiment of the utility model;

[0048] Figure 4 It is a partial explosion view of airtightness detection equipment of an embodiment of the utility model;

[0049] Figure 5 It is a partial right view of airtightness detection equipment of an embodiment of the utility model.

[0050] Label explanation: 1, rack; 10, workbench; 100, mounting frame; 11, turntable; 12, fixed disc; 13, reference platform; 130, air inlet channel; 131, leak detection port; 132, inner cavity support block; 133, outer wall limiting block; 134, sealing strip; 135, first air outlet; 136, second air outlet; 14, floating support table; 141, spring; 2, first leak detector; 23, third mounting cylinder; 3, second leak detector; 33, fourth mounting cylinder; 41, laser marking machine; 42, code scanning gun; 51, pressing assembly; 511, first cylinder; 512, connecting plate; 513, pressing column; 52, sealing element; 53, second cylinder; 6, inflation device; 62, first branch pipe; 63, second branch pipe; 64, first mounting cylinder; 65, second mounting cylinder; 7, flow detection assembly; 8, material piece; 80, cavity; 801, top opening; 81, first oil way; 82, second oil way; 83, third oil way; 84, fourth oil way; 85, sealing plug; 91, industrial computer; 92, motor; 95, first start switch; 96, second start switch; 97, alarm; 98, sensor. DETAILED DESCRIPTION

[0051] The utility model technical scheme will be further described in detail below in combination with the preferred embodiments and the drawings. In the description of the utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" are based on the orientation or positional relationship shown in the drawings. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can be explicitly or implicitly included at least one of the features. In the description of the utility model, the meaning of "multiple" is at least two, for example, two, three, etc., unless otherwise specifically limited. The embodiments described below by referring to the drawings are exemplary and are intended to explain the utility model, and cannot be understood as limiting the utility model.

[0052] As Figure 1 shown, the utility model discloses an air tightness detection equipment for detecting the air tightness of material piece 8. Wherein, material piece 8 includes cavity 80 and first oil way 81 and second oil way 82 communicated with cavity 80, wherein, first oil way 81 is arranged at the first position of material piece 8, second oil way 82 is arranged at the second position of material piece 8, and the external opening of first oil way 81 and second oil way 82 is blocked by sealing plug 85.

[0053] The air tightness detection device comprises a rotating disc 11, a plurality of stations, a reference platform 13, a motor 92, an inflation device 6 and an industrial computer 91. The plurality of stations are sequentially arranged along the circumference of the rotating disc 11, and the plurality of stations comprise a second station and a third station. The reference platform 13 is arranged on the rotating disc 11 to support the workpiece 8, and the rotating disc 11 can drive the workpiece 8 on the reference platform 13 to pass through the second station and the third station. The first leak detector 2 is arranged at the second station, and the air tightness values of the detection cavity 80 and the first oil channel 81 are M1; the second leak detector 3 is arranged at the third station, and the air tightness values of the detection cavity 80 and the second oil channel 82 are M2. The motor 92 drives the rotating disc 11 to rotate; the inflation device 6 is used to inflate the interior of the workpiece 8; and the industrial computer 91 is signal connected with the first leak detection assembly 2, the second leak detection assembly 3, the motor 92 and the inflation device 6. By arranging the second and third stations, the detection cavity 80 and the first oil channel 81 of the workpiece 8 at the second station and the detection cavity 80 and the second oil channel 82 of the workpiece at the third station can be detected at the same time, and the detection efficiency can be effectively improved.

[0054] Further reference is made to Figure 4 The workpiece 8 further comprises a third oil channel 83 and a fourth oil channel 84, and the external openings of the third oil channel 83 and the fourth oil channel 84 are blocked by the sealing plug 85. In the embodiment, the third oil channel 83 and the fourth oil channel 84 are arranged at the second position of the workpiece 8 and correspondingly arranged with the second leak detector 3. The third oil channel 83 and the fourth oil channel 84 are arranged at the second position of the workpiece 8 adjacent to the second oil channel 82, and the detection cavity 80 and the second oil channel 82, the third oil channel 83 and the fourth oil channel 84 adjacent in position of the workpiece 8 are simultaneously detected by using the second leak detector 3, which simplifies the leak detection process and improves the air tightness detection efficiency.

[0055] In addition, in other cases of the embodiment, the third oil channel 83 and the fourth oil channel 84 are arranged at the first position of the workpiece 8 and correspondingly arranged with the first leak detector 2.

[0056] As shown in Figure 1 The air tightness detection device further comprises a rack 1, and the industrial computer 91 is installed on the rack 1. Furthermore, a workbench 10 is arranged on the rack 1, and the motor 92 is installed on the workbench 10.

[0057] As shown in Figure 5 The air tightness detection device further comprises a fixed disc 12, the fixed disc 12 is fixedly connected with the stator part of the motor 92 through the through hole (not shown in the figure) in the middle of the rotating disc 11, and the rotating disc 11 is fixedly connected with the rotor part of the motor 92 through screws (not shown in the figure) and can rotate around the fixed disc 12.

[0058] Further reference is made to Figures 2 to 5The reference platform 13 is internally provided with an air inlet channel 130, the inlet end of the air inlet channel 130 is connected with the air charging device 6, and the outlet end of the air inlet channel 130 is communicated with the cavity 80. Specifically, the outlet end includes a first air outlet 135 and a second air outlet 136, the first air outlet 135 corresponds to the second position of the material piece 8 and is communicated with the air inlets of the second oil channel 82, the third oil channel 83 and the fourth oil channel 84, and the second air outlet 136 corresponds to the first position of the material piece 8 and is communicated with the air inlet of the first oil channel 81.

[0059] The air charging device 6 is arranged below the workbench 10, and the air charging device 6 includes an air charging main pipe (not shown in the figure) and a first branch pipe 62 and a second branch pipe 63 connected with the air charging main pipe, the first branch pipe 62 is arranged at the second station, and the second branch pipe 63 is arranged at the third station.

[0060] Further, the air tightness detection equipment further includes a first mounting air cylinder 64 and a second mounting air cylinder 65. When the material piece 8 reaches the second station, the first mounting air cylinder 64 drives the first branch pipe 62 to be communicated with the air inlet channel 130, so as to charge the cavity 81 and the first oil channel 81 of the material piece 8; when the material piece 8 reaches the third station, the second mounting air cylinder 65 drives the second branch pipe 63 to be communicated with the air inlet channel 130, so as to simultaneously charge the cavity 80 and the second oil channel 82, the third oil channel 83 and the fourth oil channel 84.

[0061] As shown in Figure 3 , the reference platform 13 is further provided with a leak detection port 131, the leak detection port 131 is communicated with the air inlet channel 130. When the material piece 8 reaches the second station, the first leak detector 2 is communicated with the leak detection port 131 for detecting the air tightness of the cavity 80 and the first oil channel 81; when the material piece 8 reaches the third station, the first leak detector 2 is communicated with the leak detection port 131, for simultaneously detecting the air tightness of the cavity 80 and the second oil channel 82, the third oil channel 83 and the fourth oil channel 84.

[0062] Further, the air tightness detection equipment further includes a third mounting air cylinder 23 and a fourth mounting air cylinder 33. The third mounting air cylinder 23 and the fourth mounting air cylinder 33 are both arranged on the fixed disc 12, the first leak detector 2 is fixedly connected with the third mounting air cylinder 23, and the second leak detector 3 is fixedly connected with the fourth mounting air cylinder 33. When the material piece 8 reaches the second station, the third mounting air cylinder 23 drives the first leak detector 2 to be communicated with the leak detection port 131; when the material piece 8 reaches the third station, the fourth mounting air cylinder 33 drives the second leak detector 3 to be communicated with the leak detection port 131, so as to save space and facilitate the rotation of the rotating disc 11.

[0063] Again referring to Figure 2The plurality of stations further comprises a first station, when the reference platform 13 is located at the first station, the reference platform 13 is used for receiving an external material piece 8 to be detected. And the first station can also be used as an outlet of the material piece 8 after the air tightness detection is completed.

[0064] Specifically, a sensor 98 is installed at the first station, the sensor 98 is in signal connection with the industrial computer 91 and is used for detecting whether the material piece 8 exists on the reference platform 13 located at the first station. And a first starting switch 95 is further arranged at the first station, the first starting switch 95 is in electrical connection with the industrial computer 91.

[0065] The plurality of stations further comprises a fourth station, the laser marking machine 41 and the code scanning gun 42 are arranged at the fourth station, and the laser marking machine 41 and the code scanning gun 42 are respectively in electrical connection with the industrial computer 91.

[0066] When the material piece 8 reaches the fourth station, the laser marking machine 41 is used for marking the material piece 8 after the air tightness detection is completed, and the code scanning gun 42 is used for code scanning confirmation. When the detection results of the first leak detector 2 and the second leak detector 3 are both qualified, the laser marking machine 41 prints a green seal; when the detection result of the first leak detector 2 and / or the second leak detector 3 is unqualified, the air tightness detection equipment alarms.

[0067] Therefore, corresponding to the preferred embodiment of the utility model, the specific number of the plurality of stations is four, and further comprises a first station and a fourth station. The interval angle between adjacent two stations is 90 degrees. The reference platform 13 is correspondingly arranged at each station, the number of the reference platform 13 is four, and the four reference platforms 13 rotate circularly between the first station, the second station, the third station and the fourth station. The first station, the second station, the third station and the fourth station are connected by setting the rotating disc, that is, the circular transmission track is utilized, so that the synchronous work of the plurality of stations in the same time can be realized, the detection time is greatly shortened, and the air tightness detection efficiency is improved; and the installation space is saved, manual transfer of the material piece 8 to different stations is not needed, and the risk of the material piece 8 being scratched is reduced.

[0068] Reference is made again to Figure 2 The second station, the third station and the fourth station are all provided with the pressing assembly 51, the pressing assembly 51 is located directly above the material piece 8 and is used for pressing the material piece 8 on the reference platform 13. Specifically, the pressing assembly 51 comprises a first air cylinder 511, a connecting plate 512 and a plurality of pressing columns 513. The mounting frame 100 is fixedly supported on the workbench 10, the first air cylinder 511 is fixed on the mounting frame 100, the piston rod of the first air cylinder 511 is fixedly connected with the connecting plate 512 through the through hole (not shown in the figure) on the mounting frame 100, and the plurality of pressing columns 513 are fixedly connected with the connecting plate 512 through screws and are used for pressing the material piece 8 on the reference platform 13.

[0069] The sealing piece 52 is arranged on the pressing assembly 51 at the second and third stations, and abuts against the edge of the top opening 801 of the material piece 8 when the pressing assembly 51 presses the material piece 8. Specifically, the lower side of the connecting plate 512 is fixedly connected with the second air cylinder 521 through a screw, the sealing piece 52 is fixedly connected with the piston rod of the second air cylinder 521, and the sealing piece 52 is located directly above the top opening 801 of the material piece 8, for sealing the top opening 801 of the material piece 8.

[0070] As shown in Figure 4 , the reference platform 1 includes an inner cavity support block 132 and an outer wall limiting block 133. The inner cavity support block 132 is used to provide a force to support the material piece 8 in the Z-axis direction, and the outer wall limiting block 133 is used to limit the material piece 8 to avoid the material piece 8 from deviating in the XY plane. When the pressing assembly 51 presses down the material piece 8, the material piece 8 is protected, and the risk of deformation of the material piece 8 is reduced.

[0071] Further, the reference platform 13 is also provided with a plurality of sealing strips 134, which abut against the lower edge of the material piece 8. By arranging the sealing strips 134 to seal the lower edge of the material piece 8, air leakage is prevented during the air tightness detection process, and the detection accuracy is affected.

[0072] Again referring to Figure 4 and Figure 5 , the reference platform 13 is fixedly connected with the turntable 11 through the floating support table 14. Specifically, the floating support table 14 includes springs 141 arranged around, which can buffer the pressing force when the pressing assembly 51 presses down the material piece 8, further protecting the material piece 8 and reducing the risk of deformation of the material piece 8.

[0073] As shown in Figure 2 and Figure 3 , the air tightness detection equipment also includes a flow detection assembly 7 for flow testing of a specific hole of the material piece 8. The flow detection assembly 7 is arranged at a flow detection station on the workbench 10, and the flow detection station is located at the front right of the workbench 10. When the measured flow value is qualified, manual unloading and green stamping of qualified are performed; when the measured flow value is unqualified, the equipment alarms and needs to be reset by manual.

[0074] Again referring to Figure 1 , the flow detection equipment also includes a first start switch 95, a second start switch 96 and an alarm 98 which are electrically connected with the industrial computer 91 respectively. The first start switch 95 is used to start the turntable 11, and the second start switch 96 is used to start the flow detection assembly 7.

[0075] The following will only describe the detection process of a single material piece 8 in detail.

[0076] In use, the workpiece 8 to be tested is placed on the reference platform 13 at the first station, and the first start switch 95 is pressed. The sensor 98 automatically detects the workpiece 8, and when the signal of the workpiece 8 is detected, the signal is transmitted to the industrial computer 91. The industrial computer 91 controls the motor 92 to operate to drive the rotating disc 11 to rotate.

[0077] When the workpiece 8 reaches the second station, the first cylinder 511 at the second station drives the pressing column 513 to move downward to press the workpiece 8 on the reference platform 13, and the second cylinder 521 drives the sealing piece 52 to move downward to seal the top opening 801 of the workpiece 8. Then, the first installation cylinder 64 drives the first branch pipe 62 to communicate with the air inlet channel 130 for air charging to the cavity 80 and the first oil channel 81 of the workpiece 8; the third installation cylinder 23 drives the first leak detector 2 to communicate with the leak detection opening 131 for detecting the air tightness of the cavity 80 and the first oil channel 81, and obtaining the air tightness value M1; when the air tightness is qualified, i.e. the air tightness value M1 is within the range of the theoretical value, the state light of the first leak detector 2 displays OK, and when the air tightness detection is unqualified, the state light of the first leak detector 2 displays NG. After the detection is completed, the motor 92 drives the rotating disc 11 to continue to rotate.

[0078] When the workpiece 8 reaches the third station, the first cylinder 511 at the third station drives the pressing column 513 to move downward to press the workpiece 8 on the reference platform 13, and the second cylinder 521 drives the sealing piece 52 to move downward to seal the top opening 801 of the workpiece 8. Then, the first installation cylinder 64 drives the second branch pipe 63 to communicate with the air inlet channel 130 for air charging to the cavity 80 and the second oil channel 82, the third oil channel 83 and the fourth oil channel 84 of the workpiece 8 at the same time; the fourth installation cylinder 23 drives the second leak detector 3 to communicate with the leak detection opening 131 for detecting the air tightness of the cavity 80 and the second oil channel 82, the third oil channel 83 and the fourth oil channel 84 at the same time, and obtaining the air tightness value M2; when the air tightness is qualified, i.e. the air tightness value M2 is within the range of the theoretical value, the state light of the second leak detector 3 displays OK, and when the air tightness detection is unqualified, the state light of the second leak detector 3 displays NG. After the detection is completed, the motor 92 drives the rotating disc 11 to continue to rotate.

[0079] When the workpiece 8 reaches the fourth station, the laser marking machine 4 marks the workpiece 8 after the air tightness detection is completed, and the code scanning gun 4 confirms the code scanning. When the results of the first leak detector 2 and the second leak detector 3 are both qualified, i.e. the air tightness values M1 and M2 are within the range of the theoretical value, the laser marking machine 41 prints a green seal; when the results of the first leak detector 32 and / or the second leak detector 33 are unqualified, the air tightness detection equipment alarms. After the code scanning confirmation is completed, the motor 92 drives the rotating disc 11 to continue to rotate.

[0080] When the material piece 8 returns to the first station, the material piece 8 is taken out by a manual or a mechanical hand and placed in the flow detection assembly 7, the second start switch 96 is pressed, the flow of the specific hole of the material piece 8 is tested, when the measured flow value is qualified, the material piece 8 is manually discharged and a qualified green seal is stamped; when the measured flow value is unqualified, the equipment alarms and needs to be manually reset.

[0081] The third oil channel 83 and the fourth oil channel 84 are arranged at the second position of the material piece 8 and adjacent to the second oil channel 82, and the cavity 80 of the material piece 8 and the second oil channel 82, the third oil channel 83 and the fourth oil channel 84 adjacent in position are simultaneously subjected to air tightness detection by using the second leak detector 3, so that the leak detection process is simplified and the air tightness detection efficiency is improved. The first station, the second station, the third station and the fourth station are connected by the rotary disc, that is, the circular transmission track is utilized, so that the synchronous work of multiple stations in the same time can be realized, the detection time is greatly shortened, the air tightness detection efficiency is improved, the installation space is saved, the manual transfer of the material piece 8 to different stations is not needed, and the risk of the material piece 8 being scratched is reduced. The inner cavity supporting block 132 and the outer wall limiting block 133 are arranged, when the pressing assembly 51 presses the material piece 8, the material piece 8 is protected, and the risk of the material piece 8 being deformed is reduced. The floating support table 14 is arranged between the reference platform 13 and the rotary disc 11, so that when the pressing assembly 51 presses the material piece 8, the pressing force is buffered, the material piece 8 is further protected, and the risk of the material piece 8 being deformed is reduced. By arranging the second station and the third station, the cavity 80 of the material piece 8 at the second station and the first oil channel 81, the cavity 80 of the material piece 8 at the third station and the second oil channel 82, the third oil channel 83 and the fourth oil channel 84 can be detected at the same time, and the detection efficiency can be effectively improved.

[0082] The above-mentioned embodiments only express several implementation manners of the utility model, the description is more specific and detailed, but it cannot be understood as the limitation of the utility model patent range. It should be pointed out that, for ordinary skilled persons in the art, without departing from the concept of the utility model, a plurality of deformations and improvements can be made, which belong to the protection range of the utility model. Therefore, the protection range of the utility model patent should be subject to the appended claims.

Claims

1. A leak detection apparatus for detecting the tightness of a piece (8), characterized in that, The material piece (8) comprises a cavity (80), a first oil passage (81) and a second oil passage (82) in communication with the cavity (80), the first oil passage (81) is arranged at a first position of the material piece (8), the second oil passage (82) is arranged at a second position of the material piece (8), and the external openings of the first oil passage (81) and the second oil passage (82) are blocked by a sealing plug (85); The air tightness detection equipment comprises: A turntable (11); A plurality of stations, the plurality of stations are sequentially arranged along the circumference of the turntable (11), and the plurality of stations comprise a second station and a third station; A reference platform (13) arranged on the turntable (11) for supporting the material piece (8), and the turntable (11) can drive the material piece (8) on the reference platform (13) to pass through the second station and the third station; A first leak detector (2) arranged at the second station and detecting the air tightness value of the cavity (80) and the first oil passage (81) as M1; A second leak detector (3) arranged at the third station and detecting the air tightness value of the cavity (80) and the second oil passage (82) as M2; A motor (92) driving the turntable (11) to rotate; An inflation device (6) for inflating the inside of the material piece (8); and An industrial computer (91) signal connected with the first leak detector (2), the second leak detector (3), the motor (92) and the inflation device (6).

2. The leak detection apparatus of claim 1, wherein The material piece (8) further comprises a third oil passage (83) and a fourth oil passage (84), the external openings of the third oil passage (83) and the fourth oil passage (84) are blocked by the sealing plug (85); the third oil passage (83) and the fourth oil passage (84) are arranged at the first position of the material piece (8) and correspondingly arranged with the first leak detector (2), or the third oil passage (83) and the fourth oil passage (84) are arranged at the second position of the material piece (8) and correspondingly arranged with the second leak detector (3).

3. The leak detection apparatus of claim 1, wherein The reference platform (13) is internally provided with an air inlet channel (130), the inlet end of the air inlet channel (130) is connected with the inflation device (6), and the outlet end of the air inlet channel (130) is in communication with the cavity (80).

4. A leak detection apparatus as claimed in claim 3, wherein The inflation device (6) comprises an inflation main pipe, a first branch pipe (62) and a second branch pipe (63) connected with the inflation main pipe, the first branch pipe (62) is arranged at the second station, and the second branch pipe (63) is arranged at the third station.

5. A leak detection apparatus as claimed in claim 4, wherein The air tightness detection equipment further comprises a first mounting air cylinder (64) and a second mounting air cylinder (65); When the material piece (8) reaches the second station, the first mounting air cylinder (64) drives the first branch pipe (62) to communicate with the air inlet channel (130); When the material piece (8) reaches the third station, the second mounting cylinder (65) drives the second branch pipe (63) to communicate with the air inlet channel (130).

6. The leak detection apparatus of claim 3, wherein, The reference platform (13) is further provided with a leak detection opening (131) in communication with the air inlet channel (130). When the material piece (8) reaches the second station, the first leak detector (2) communicates with the leak detection opening (131). When the material piece (8) reaches the third station, the first leak detector (2) communicates with the leak detection opening (131).

7. A leak detection apparatus according to claim 6, wherein The air tightness detection equipment further comprises a third mounting cylinder (23) and a fourth mounting cylinder (33). When the material piece (8) reaches the second station, the third mounting cylinder (23) drives the first leak detector (2) to communicate with the leak detection opening (131). When the material piece (8) reaches the second station, the fourth mounting cylinder (33) drives the second leak detector (3) to communicate with the leak detection opening (131).

8. The leak detection apparatus of claim 1, wherein, The plurality of stations further comprises a first station, when the reference platform (13) is located at the first station, the reference platform (13) is used for receiving an external material piece (8) to be detected, a sensor (98) is installed at the first station, and the sensor (98) is in signal connection with the industrial computer (91) and is used for detecting whether the material piece (8) exists on the reference platform (13) located at the first station.

9. A leak detection apparatus according to claim 8, wherein, The plurality of stations further comprises a fourth station, a laser marking machine (41) and a code scanning gun (42) are arranged at the fourth station, when the material piece (8) reaches the fourth station, the laser marking machine (41) is used for marking the material piece (8) whose air tightness detection is completed, and the code scanning gun (42) is used for code scanning and confirmation. When the results detected by the first leak detector (2) and the second leak detector (3) are both qualified, the laser marking machine (41) prints a green seal; When the results detected by the first leak detector (2) and / or the second leak detector (3) are unqualified, the air tightness detection equipment alarms.

10. A leak detection apparatus as claimed in claim 9, wherein The number of the reference platforms (13) is four, and the four reference platforms (13) rotate circularly between the first station, the second station, the third station and the fourth station.

11. The leak detection apparatus of claim 9, wherein, The second station, the third station and the fourth station are all provided with a pressing assembly (51) located directly above the material piece (8) and used for pressing the material piece (8) on the reference platform (13).

12. A leak detection apparatus according to claim 11, wherein, The pressing assembly (51) located at the second station and the third station is provided with a sealing piece (52), when the pressing assembly (51) presses the material piece (8), the sealing piece (52) abuts against the edge of the top opening (801) of the material piece (8).

13. The leak detection apparatus of claim 1, wherein, The reference platform (13) comprises a cavity support block (132) for providing a force to support the material piece (8) in the Z-axis direction, and an outer wall limiting block (133) for limiting the material piece (8) to avoid deviation of the material piece (8) in the XY plane.

14. The leak detection apparatus of claim 1, wherein, A plurality of sealing strips (134) are further arranged on the reference platform (13) and abut against the lower edge of the material piece (8).

15. The leak detection apparatus of claim 1, wherein, The reference platform (13) is fixedly connected with the rotating disc (11) through a floating support table (14).

16. The leak detection apparatus of claim 7, wherein, The air tightness detection device further comprises a fixed disc (12) fixedly connected with a stator part of the motor (92), and the rotating disc (11) is fixedly connected with a rotor part of the motor (92) and can rotate around the fixed disc (12).

17. A leak detection apparatus according to claim 16, wherein, The third mounting air cylinder (23) and the fourth mounting air cylinder (33) are both arranged on the fixed disc (12).

18. The leak detection apparatus of claim 1, wherein, The air tightness detection device further comprises a flow detection assembly (7) for testing the flow of a specific hole of the material piece (8).

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