A multi-station air tightness automatic detection device

Abstract

The application relates to a multi-station airtight automatic detection equipment, which comprises a manipulator, a feeding and discharging unit, an unqualified discharging unit, a first detection unit and a second detection unit, the manipulator is located at the middle position of the feeding and discharging unit, the unqualified discharging unit, the first detection unit and the second detection unit, the manipulator transfers workpieces in the circumference with the fixed mounting point of the manipulator as the center and the mechanical arm length of the manipulator as the radius. The multi-station airtight automatic detection equipment has the advantages that the manipulator takes materials from the feeding and discharging unit to the first detection unit and the second detection unit for detection, and according to whether the products are qualified, the products can be put into the feeding and discharging unit or the unqualified discharging unit, multiple product detections can be carried out, the CT time of the whole equipment is short, the automatic detection is complete, the equipment is convenient to operate, the design is simple, the sealing effect is good, the test is stable, the result is real, and manpower cost is saved.

Description

[0001] The present invention relates to the technical field of air tightness detection, in particular to a multi-station automatic air tightness detection device. Background Art

[0002] The air tightness testing machine, also known as the air tightness detection testing machine, is a device widely used in air tightness testing of various seals such as faucet cavities, automobile cylinders, piston cavities, elbow cavities, pressure gauges, gas tanks, etc. It can be used for production batch testing, as well as for random inspection or laboratory use.

[0003] In manufacturing companies, for certain workpieces produced in large quantities, it is necessary to conduct batch airtightness testing on the workpieces. Due to the large number of workpieces, the existing testing equipment has the following defects:

[0004] 1) Manually place several workpieces on a turntable with several workstations, then place the turntable on the airtightness testing machine, and start the airtightness testing machine to test the workpieces on the turntable. This type of airtightness testing machine has the disadvantage of being idle during the process of manually placing the workpieces, and cannot achieve continuous operation. In addition, there is also a defect that the workpieces need to be manually taken out after the test is completed, which further limits the working efficiency of the airtightness testing machine.

[0005] 2) Before testing the workpiece, a fixture is required to clamp the workpiece, usually manually. Manual clamping is slow and laborious, which reduces work efficiency. Some electric clamping devices also require a more complex clamping mechanism when clamping irregular objects, and simple clamping mechanisms are not secure.

[0006] 3) Due to the unreasonable design of the workstation layout, the existing testing equipment has a long idle interval for loading and transferring materials, which cannot fully utilize the idle time and leads to low testing efficiency. Summary of the Invention

[0007] To this end, the technical problem to be solved by the present invention is to overcome the unreasonable layout of the air tightness detection equipment in the prior art, which results in a long idle waiting time during the air tightness detection of large quantities of workpieces, and the inability to perform continuous detection, resulting in low detection efficiency.

[0008] To solve the above technical problems, the application provides a multi-station air tightness automatic detection equipment, which comprises a manipulator, a feeding and discharging unit, an unqualified discharging unit, a first detection unit and a second detection unit, the feeding and discharging unit, the unqualified discharging unit, the first detection unit and the second detection unit are respectively located on four edges of a rectangular section, and the manipulator is located at a middle position of the feeding and discharging unit, the unqualified discharging unit, the first detection unit and the second detection unit; the manipulator is used for transferring workpieces in a circle with the fixed mounting point of the manipulator as the center and the length of the mechanical arm of the manipulator as the radius, the manipulator is used for feeding the workpieces in the feeding and discharging unit to the first detection unit and the second detection unit, and the manipulator is used for discharging the workpieces detected by the first detection unit and the second detection unit to the unqualified discharging unit; the feeding and discharging unit is internally provided with a plurality of full-workpiece trays, and the full-workpiece trays are stacked into a stack, the feeding and discharging unit is used for feeding the workpieces in the full-workpiece trays, and the feeding and discharging unit is also used for receiving the workpieces transferred by the manipulator; the first detection unit is used for receiving the workpieces transferred by the manipulator, and the first detection unit is used for air tightness detection of the workpieces; the second detection unit is used for receiving the workpieces transferred by the manipulator, and the first detection unit is used for air tightness detection of the workpieces, and the second detection unit and the first detection unit are independent working units; the unqualified discharging unit is internally provided with a stack of empty trays, and the empty trays are used for receiving the workpieces transferred by the manipulator.

[0009] In an embodiment of the application, the feeding and discharging unit and the unqualified discharging unit are oppositely arranged, and the first detection unit and the second detection unit are oppositely arranged.

[0010] In an embodiment of the application, the detection equipment further comprises a positioning unit, the positioning unit is arranged in a circle with the fixed mounting point of the manipulator as the center and the length of the mechanical arm of the manipulator as the radius, and the positioning unit is used for scanning code positioning of the workpieces to be detected.

[0011] In an embodiment of the application, the feeding and discharging unit and the unqualified discharging unit have the same structure, and the feeding and discharging unit and the unqualified discharging unit each comprise a frame body, a first storage bin, a second storage bin and a tray translation device, the first storage bin and the second storage bin are arranged side by side on the frame body, the tray translation device is arranged on the upper end of the frame body, the first storage bin and the second storage bin are used for arranging the trays, and the tray translation device is used for transferring the trays between the first storage bin and the second storage bin.

[0012] In one embodiment of the present invention, the first material bin and the second material bin have the same structure, and both the first material bin and the second material bin include drawers, drawer slides, lifting devices, support plates, vertical guide rails and vertical sliders. The drawer slides are arranged on a frame, and a stack of material trays is provided in the drawer. The drawer is slidably connected to the frame through the drawer slides, and the drawer can move linearly relative to the frame. The lifting device and the vertical guide rails are both arranged on the frame, the support plate is connected to the lifting device, the vertical slider is fixedly connected to the support plate, and the vertical slider is slidably connected to the vertical guide rail. The lifting device drives the support plate to contact the end of the material tray extending out of the drawer, and the lifting device can drive the material tray to move up and down in the vertical direction.

[0013] In one embodiment of the present invention, the material tray translation device includes a translation drive motor, a translation driving wheel, a translation driven wheel, a translation gear belt, a gear belt splint, a mobile slide and a number of material tray support assemblies. The output end of the translation drive motor is connected to the translation driving wheel, the translation driving wheel is connected to the translation driven wheel through the translation gear belt, the mobile slide is connected through the gear belt splint and the translation gear belt, and the mobile slide and the frame are slidably connected. The number of material tray support assemblies are installed on the mobile slide, the mobile slide is a rectangular plate, and a first through hole is provided in the middle of the mobile slide, and the number of material tray support assemblies are used to limit the material tray within the first through hole.

[0014] In one embodiment of the present invention, the detection equipment also includes an outer box body, which is a rectangular box body, and the outer box body is arranged outside the manipulator, the loading and unloading unit, the unqualified unloading unit, the first detection unit and the second detection unit. The outer box body is provided with a second through hole at a position opposite to the first silo and the second silo, the drawer is provided with a drawer door, and the drawer door cover is provided at the second through hole.

[0015] In one embodiment of the present invention, the first detection unit and the second detection unit have the same structure, and both the first detection unit and the second detection unit include a detection mounting base plate and a plurality of air-tightness detection devices, and the plurality of air-tightness detection devices are all arranged on the detection mounting base plate, and the plurality of air-tightness detection devices are arranged in a row, and the air-tightness detection devices are used for air-tightness detection of workpieces; the air-tightness detection device includes a detection base plate, a workpiece positioning jig, a detection support frame and a detection pressing device, the detection support frame is installed on the detection base plate, the detection pressing device is installed on the detection support frame, the workpiece positioning jig is arranged on the detection base plate, a workpiece is arranged in the workpiece positioning jig, and the detection pressing device is pressed down on the workpiece positioning jig for air-tightness detection of the workpiece.

[0016] In one embodiment of the present invention, the workpiece positioning fixture includes a workpiece placement block, at least one sealing component, an inflation joint and a detection joint. The workpiece placement block is used to place the workpiece, the sealing component is used to seal the workpiece in the workpiece placement block, the inflation joint is used to inflate the workpiece in the workpiece placement block, and a pressure sensor is installed at the detection joint, and the pressure sensor is used to detect the cavity pressure in the workpiece.

[0017] In one embodiment of the present invention, the detection downward pressure device includes an electric cylinder, a lifting frame, a fine-tuning assembly and an upper blocking block. The electric cylinder is installed on the detection support frame, and the output end of the electric cylinder is connected to the lifting frame. The fine-tuning assembly is arranged on the lifting frame. The upper blocking block is connected to the fine-tuning assembly, and the fine-tuning assembly drives the upper blocking block to press and seal the workpiece in the workpiece positioning fixture.

[0018] The above technical solution of the present invention has the following beneficial effects compared with the prior art:

[0019] The multi-station automatic air tightness detection equipment described in the present invention has an automatic loading and unloading device that places the material tray in the material bin of the air tightness detection equipment. After the material bin senses the presence of the material tray, it lifts the material tray to the material picking position, the robot takes a picture to locate it, and the material picking cylinder sucks the product and moves it to the scanning position to scan the code. The scanned OK material is placed in the test module for testing, and the scanned NG material is placed in the NG material tray. After the test is completed, the robot picks up the material, tests the OK material and places it into the material picking tray, and tests the NG material and places it into the NG material tray. After the material picking tray is full, the silo transport module transports the full tray of material to the unloading silo on the side for stacking and storage. After the OK material tray is full, the unloading silo is manually pulled out to take out the stacked OK material tray. Multiple product inspections can be performed, the CT time of the entire equipment is short, and the inspection is fully automatic. The equipment is easy to operate, the design is simple, the sealing effect is good, the test results are stable and true, and labor costs are saved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to make the content of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments of the present invention in conjunction with the accompanying drawings, wherein

[0021] Figure 1 The appearance of the multi-station automatic airtightness detection equipment in the preferred embodiment of the present invention is Figure 1 ;

[0022] Figure 2 The appearance of the multi-station automatic airtightness detection equipment in the preferred embodiment of the present invention is Figure 2 ;

[0023] Figure 3 A top view of a multi-station automatic airtightness detection device in a preferred embodiment of the present invention;

[0024] Figure 4 This is a schematic structural diagram of a multi-station automatic airtightness detection device in a preferred embodiment of the present invention;

[0025] Figure 5 This is a schematic structural diagram of a positioning unit in a preferred embodiment of the present invention;

[0026] Figure 6 The structure of the loading and unloading unit or the unqualified unloading unit in the preferred embodiment of the present invention is shown as follows Figure 1 ;

[0027] Figure 7 The structure of the loading and unloading unit or the unqualified unloading unit in the preferred embodiment of the present invention is shown as follows Figure 2 ;

[0028] Figure 8 The structure of the first silo or the second silo in the preferred embodiment of the present invention is schematically shown. Figure 1 ;

[0029] Figure 9 The structure of the first silo or the second silo in the preferred embodiment of the present invention is schematically shown. Figure 2 ;

[0030] Figure 10 The structure of the first silo or the second silo in the preferred embodiment of the present invention is schematically shown. Figure 3 ;

[0031] Figure 11 This is a structural diagram of a drawer in a preferred embodiment of the present invention;

[0032] Figure 12 This is a structural diagram of a tray supporting assembly in a preferred embodiment of the present invention;

[0033] Figure 13 Schematic diagram of the structure of the first detection unit or the second detection unit in a preferred embodiment of the present invention;

[0034] Figure 14 Schematic diagram of the structure of the airtightness detection device in a preferred embodiment of the present invention;

[0035] Figure 15 Schematic diagram of the structure of the detection pressure device in the preferred embodiment of the present invention;

[0036] Figure 16 The structure of the fine-tuning component in the preferred embodiment of the present invention is schematically shown. Figure 1 ;

[0037] Figure 17 The structure of the fine-tuning component in the preferred embodiment of the present invention is schematically shown. Figure 2 ;

[0038] Figure 18The structure of the workpiece positioning fixture in the preferred embodiment of the present invention is shown in FIG. Figure 1 ;

[0039] Figure 19 The structure of the workpiece positioning fixture in the preferred embodiment of the present invention is shown in FIG. Figure 2 ;

[0040] Figure 20 The structure of the workpiece positioning fixture in the preferred embodiment of the present invention is shown in FIG. Figure 3 .

[0041] Description of the accompanying drawings: Manipulator 1, loading and unloading unit 2, frame 21, lower bottom plate 211, upper top plate 212, first rectangular hole 2121, support rod 213, first material bin 22, drawer 221, drawer bottom plate 2211, right-angle plate 2212, drawer door 2213, drawer slide 222, lifting device 223, lifting drive motor 2231, driving wheel 2232, transmission wheel 2233, gear belt 2234, two driven wheels 2 235, screw rod 2236, support plate 224, vertical guide rail 225, vertical slider 226, second hopper 23, tray translation device 24, translation drive motor 241, translation driving wheel 242, translation driven wheel 243, translation gear belt 244, gear belt clamping plate 245, moving slide plate 246, translation slider 2461, tray support assembly 247, cylinder mounting block 2471, support drive cylinder 2472, insert plate 2473, first pass Hole 248, translation linear guide 249, unqualified blanking unit 3, first detection unit 4, detection mounting base 41, airtightness detection device 42, detection base 421, workpiece positioning fixture 422, workpiece placement block 4221, blocking component 4222, inflation joint 4223, detection joint 4224, slide 4225, movable bracket 4226, blocking head 4227, detection support frame 423, detection pressing device 424, electric cylinder 4 241, lifting frame body 4242, fine-tuning assembly 4243, upper blocking block 4244, fine-tuning motor 4245, fine-tuning driving wheel 4246, fine-tuning driven wheel 4247, fine-tuning screw rod 4248, pressure sensor 4249, moving rod 42410, fine-tuning belt 4240, second detection unit 5, positioning unit 6, barcode scanner mounting bracket 61, barcode scanner 62, positioning support seat 63, positioning block 64, outer box body 7, second through hole 71. DETAILED DESCRIPTION

[0042] The present invention will be further described below with reference to the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it. However, the embodiments are not intended to limit the present invention.

[0043] Reference Figure 1-4As shown, the multi-station airtightness automatic detection equipment of the present invention includes: a manipulator 1, a loading and unloading unit 2, an unqualified unloading unit 3, a first detection unit 4 and a second detection unit 5, wherein the loading and unloading unit 2, the unqualified unloading unit 3, the first detection unit 4 and the second detection unit 5 are respectively located on the four sides of the rectangular cross-section, and the manipulator 1 is located in the middle of the loading and unloading unit 2, the unqualified unloading unit 3, the first detection unit 4 and the second detection unit 5; the manipulator 1 transports the workpiece within a circle with the fixed installation point of the manipulator 1 as the center and the length of the manipulator arm of the manipulator 1 as the radius, and the manipulator 1 is used to load the workpiece in the loading and unloading unit 2 to the first detection unit 4 and the second detection unit 5, and the manipulator 1 detects the first detection unit 4 and the second detection unit 5 The unqualified workpieces are unloaded to the unqualified unloading unit 3; the loading and unloading unit 2 is provided with a plurality of trays full of workpieces, and the trays full of workpieces are stacked into a stack. The loading and unloading unit 2 is used to load the workpieces in the trays full of workpieces. The loading and unloading unit 2 is also used to receive the qualified workpieces transferred by the robot 1; the first detection unit 4 is used to receive the workpieces transferred by the robot 1, and the first detection unit 4 is used for air tightness detection of the workpieces; the second detection unit 5 is used to receive the workpieces transferred by the robot 1, and the second detection unit 5 is used for air tightness detection of the workpieces. The second detection unit 5 and the first detection unit 4 are independent working units; the unqualified unloading unit 3 is provided with a stack of empty trays, and the empty trays are used to receive the unqualified workpieces transferred by the robot 1. The loading and unloading unit 2 and the unqualified unloading unit 3 are arranged opposite to each other, and the first detection unit 4 and the second detection unit 5 are arranged opposite to each other. By setting the first detection unit 4 and the second detection unit 5 as a relative structure, the loading and unloading unit 2 and the unqualified unloading unit 3 are set opposite each other, so that the overall layout of the detection equipment is more reasonable, and the manipulator 1 takes the material from the loading and unloading unit 2 to the first detection unit 4 and the second detection unit 5 to inspect the workpiece.

[0044] Reference Figure 5 As shown, the detection device also includes a positioning unit 6, which is set within a circle with the fixed installation point of the manipulator 1 as the center and the arm length of the manipulator 1 as the radius, and the positioning unit 6 is used to scan and locate the workpiece to be detected. Specifically, the positioning unit 6 can scan the workpiece to be detected that is picked up by the manipulator 1. At the same time, the positioning unit 6 also performs secondary positioning on the workpiece to be detected. The workpiece to be detected that passes the scan is placed in the first detection unit 4 or the second detection unit 5 for testing, and the workpiece to be detected that fails the scan is placed in the unqualified material tray.

[0045] Specifically, the positioning unit 6 includes a barcode scanner mounting bracket 61, a barcode scanner 62, a positioning support seat 63 and a positioning block 64. The barcode scanner 62 is fixedly mounted on the barcode scanner mounting bracket 61, and the positioning block 64 is mounted on the positioning support seat 63. The positioning block 64 is used to perform secondary positioning of the workpiece, and the barcode scanner 62 scans the code of the workpiece on the positioning block 64.

[0046] Reference Figure 6 、 7 As shown, the loading and unloading unit 2 and the unqualified unloading unit 3 have the same structure, and both the loading and unloading unit 2 and the unqualified unloading unit 3 include a frame 21, a first material bin 22, a second material bin 23 and a material tray translation device 24. The first material bin 22 and the second material bin 23 are arranged side by side on the frame 21, and the material tray translation device 24 is arranged on the upper end of the frame 21. The first material bin 22 and the second material bin 23 are used to set material trays, and the material tray translation device 24 is used to transfer material trays between the first material bin 22 and the second material bin 23. The frame 21 is composed of a lower bottom plate 211, an upper top plate 212 and a number of support rods 213. The lower bottom plate 211 and the upper top plate 212 are both rectangular flat plates, and the lower bottom plate 211 and the upper top plate 212 are opposite and parallel to each other. The number of support rods 213 are arranged between the lower bottom plate 211 and the upper top plate 212. Two first rectangular holes 2121 are provided on the upper top plate 212. The rectangular cross-sectional area of ​​the first rectangular holes 2121 is larger than the cross-sectional area of ​​the material tray. The two first rectangular holes 2121 are respectively opposite to the first material bin 22 and the second material bin 23. The first rectangular holes 2121 are used to pass through the material tray.

[0047] Reference Figure 8 、 9 As shown, the first material bin 22 and the second material bin 23 have the same structure. The first material bin 22 and the second material bin 23 both include a drawer 221, a drawer slide 222, a lifting device 223, a support plate 224, a vertical guide rail 225 and a vertical slider 226. The drawer slide 222 is arranged on the frame 21. A stack of material trays is provided in the drawer 221. The drawer 221 is slidably connected to the frame 21 through the drawer slide 222. The drawer 221 can perform linear motion relative to the frame 21. The lifting device 223 and the vertical guide rail 225 are both arranged on the frame 21. The support plate 224 is connected to the lifting device 223. The vertical slider 226 is fixedly connected to the support plate 224, and the vertical slider 226 is slidably connected to the vertical guide rail 225. The lifting device 223 drives the support plate 224 to contact the end of the material tray extending out of the drawer 221, and the lifting device 223 can drive the material tray to move up and down in the vertical direction. The supporting plates 224 are symmetrically arranged, and are respectively located on both sides of two opposite sides of the material tray. In this way, the lifting device 223 synchronously drives the two supporting plates 224 to move, and supports the material tray from two opposite sides.

[0048] Reference Figure 8 、 10 As shown, the lifting device 223 includes a lifting drive motor 2231, a driving wheel 2232, a plurality of transmission wheels 2233, a gear belt 2234, two driven wheels 2235 and two screw rods 2236. The output end of the lifting drive motor 2231 is connected to the driving wheel 2232, and the driving wheel 2232 is connected to the plurality of transmission wheels 2233 and the two driven wheels 2235 through the gear belt 2234. The two driven wheels 2235 are respectively arranged on both sides of the drawer 221, and the two driven wheels 2235 and the two screw rods 2236 are arranged one by one. The lower end of the screw rod 2236 is connected to the driven wheel 2235, and the upper end of the screw rod 2236 is set on the frame 21 through a bearing seat. The screw rod 2236 and the support plate 224 are arranged in a one-to-one correspondence, and the support plate 224 and the screw nut of the screw rod 2236 are fixedly connected. When the lifting drive motor 2231 drives the driving wheel 2232 to rotate, the driving wheel 2232 drives the two driven wheels 2235 to rotate through the gear belt 2234, thereby causing the two screw rods 2236 to rotate, and the screw nut on the screw rod 2236 rises and falls along the screw rod 2236.

[0049] Reference Figure 9As shown, the drawer 221 includes a drawer bottom plate 2211 and four right-angle plates 2212. The drawer bottom plate 2211 can be pulled out and drawn on the frame 21 through the drawer slide rail 222. The drawer bottom plate 2211 is a rectangular flat plate. The four right-angle plates 2212 are respectively arranged at the four corners of the drawer bottom plate 2211, and the recessed right angles of the right-angle plates 2212 are arranged relative to the center of the rectangle. The cross-sectional area enclosed by the four right-angle plates 2212 is larger than the cross-sectional area of ​​the material tray. The recessed right angles of the right-angle plates 2212 are arranged one-to-one corresponding to the four corners of the material tray. In this way, the four right-angle plates 2212 confine a stack of material trays on the drawer bottom plate 2211. An avoidance groove is provided at the position where the drawer bottom plate 2211 and the supporting plate 224 face each other. In this way, after a material tray is placed on the drawer bottom plate 2211, the position where the material tray and the avoidance groove face each other is exposed and is not blocked by the drawer bottom plate 2211. For a material tray full of workpieces, a stack of material trays is placed on the drawer bottom plate 2211. When the supporting plate 224 is driven to rise by the lifting device 223, the supporting plate 224 contacts the material tray on the drawer bottom plate 2211, thereby driving the stack of trays on the drawer bottom plate 2211 to move upward. When the workpieces in the material tray on the top layer are taken out, the lifting device 223 drives the supporting plate 224 to rise to a set height, so that the material tray full of workpieces continues to be in the material taking position. When collecting the material tray, the lifting device 223 drives the support plate 224 to the highest point, and the material tray is pushed to a position opposite to the drawer bottom plate 2211 through the material tray translation device 24. The material tray translation device 24 releases the material tray on the support plate 224, and the lifting device 223 drives the support plate 224 to descend to a set height, so that the material tray on the top layer of the support plate 224 can continue to receive the material tray, so that the material trays are stacked in sequence.

[0050] Laser sensors are provided at the upper and lower ends of the frame 21 , and the provided laser sensors are used to sense whether the material tray driven by the lifting device 223 is in the working position.

[0051] Reference Figure 7 、 12As shown, the tray translation device 24 includes a translation drive motor 241, a translation active wheel 242, a translation driven wheel 243, a translation gear belt 244, a gear belt clamp 245, a mobile slide 246 and a number of tray support assemblies 247. The output end of the translation drive motor 241 is connected to the translation active wheel 242, the translation active wheel 242 is connected to the translation driven wheel 243 through the translation gear belt 244, the mobile slide 246 is connected through the gear belt clamp 245 and the translation gear belt 244, and the mobile slide 246 is slidably connected to the frame 21. The number of tray support assemblies 247 are installed on the mobile slide 246. The mobile slide 246 is a rectangular plate, and a first through hole 248 is provided in the middle of the mobile slide 246. The number of tray support assemblies 247 are used to limit the tray within the first through hole 248. By providing a first through-hole 248 in the middle of the rectangular cross-section movable slide 246, the movable slide 246 forms a rectangular frame structure. Material tray support assemblies 247 are provided around the rectangular frame movable slide 246. When the lifting device 223 drives the material tray into the first through-hole 248, the material tray is supported by the plurality of material tray support assemblies 247. In this way, when the translation drive motor 241 drives the movable slide 246 via the translation driving wheel 242, the translation driven wheel 243, and the translation gear belt 244, the material tray is switched between the first material bin 22 and the second material bin 23. The frame 21 is provided with a translation linear guide 249. A translation slider 2461 is connected to the movable slide 246. The translation slider 2461 is disposed on the translation linear guide 249 and is capable of sliding along the translation linear guide 249.

[0052] Reference Figure 12 As shown, the tray supporting assembly 247 includes a cylinder mounting block 2471, a supporting driving cylinder 2472 and an insert plate 2473, the cylinder mounting block 2471 is mounted on the movable slide 246, the supporting driving cylinder 2472 is mounted on the cylinder mounting block 2471, the insert plate 2473 is connected to the output end of the supporting driving cylinder 2472, and the end of the insert plate 2473 away from the supporting driving cylinder 2472 is provided with an inclined surface, so that a wedge-shaped transition structure is formed at the end where the insert plate 2473 is inserted into the tray, and the insert plate 2473 is driven by the supporting driving cylinder 2472 to be inserted under the tray, so that multiple insert plates 2473 can support the tray. In the design of the translation of the material tray, the cross-sectional area of ​​the first through hole 248 is larger than the cross-sectional area of ​​the material tray. When the material tray does not need to be translated, the piston rod of the supporting drive cylinder 2472 is in a retracted state, and the insert plate 2473 is retracted into the cross-sectional range of the rectangular frame of the translation slider 2461. In this way, when the lifting device 223 drives the material tray to rise and enter the first through hole 248, the insert plate 2473 will not interfere with the material tray. When the supporting drive cylinder 2472 drives the insert plate 2473 to extend, the insert plate 2473 is inserted under the material tray to just support the material tray.

[0053] The loading and unloading unit 2 and the unqualified unloading unit 3 include a total of four silo stations with the same structure: a full material loading silo station, a qualified part recovery station, an unqualified part recovery station and an empty tray station.

[0054] Reference Figure 3 As shown, the working principles of the four silo stations involved in the loading and unloading unit 2 and the unqualified unloading unit 3 are as follows:

[0055] S1. First, pull out the drawer 221 of the full material loading bin station, put a stack of trays full of workpieces into the full material loading bin station, and then push back the drawer 221 of the full material loading bin station;

[0056] S2, the robot 1 grabs the workpiece in the top tray of the drawer 221 in the full material loading bin station and puts it into the first detection unit 4 or the second detection unit 5 for workpiece inspection;

[0057] S3. After the airtightness test of the workpiece in the first inspection unit 4 or the second inspection unit 5 is completed, if the product is qualified, the robot 1 grabs the tested product and puts it into the tray in the qualified part recycling station; if the product is unqualified, the robot 1 grabs the tested product and puts it into the tray in the unqualified recycling station;

[0058] S4, repeating the above steps S2 to S3 until all the workpieces in the top tray of the drawer 221 in the full material loading bin station are used up;

[0059] S5. The tray translation device 24 is started, and the tray translation device 24 drives the movable slide 246 to cover the tray above the full-material tray in the drawer 221 in the loading bin station. The lifting device 223 drives the tray with used workpieces upward until it is located in the first through hole 248. The supporting drive cylinder 2472 drives the inserting plate 2473 to extend and lift the top empty tray.

[0060] S6, the full material loading bin station is operated as follows: the lifting device 223 drives the full material tray downward to move downward, so that the uppermost empty material tray is separated from the lower material tray;

[0061] S7: The tray translation device 24 is started, driving the empty tray to move to the qualified parts recovery station. At the same time, the action at the qualified parts recovery station is that the lifting device 223 drives the tray containing qualified parts downward, so that the empty tray conveyed by the tray translation device 24 is on the top layer for qualified products to be recovered;

[0062] S8, the actions of the unqualified recycling station and the empty tray station are as follows: the tray in the unqualified recycling station continuously receives unqualified workpieces until the tray in the unqualified recycling station is fully filled with workpieces;

[0063] S9, the unqualified recycling station operates as follows: the lifting device 223 drives the tray filled with unqualified workpieces downward;

[0064] S10, the tray translation device 24 drives the insert plate 2473 to extend through the supporting drive cylinder 2472 to support the top tray at the empty tray station and move it to the unqualified workpiece recovery station. The supporting drive cylinder 2472 drives the insert plate 2473 to recover the empty tray, releasing it above the unqualified tray to continue receiving unqualified workpieces.

[0065] S11. When the drawer at the unqualified recycling station is full of trays, pull out the drawer and take out all the trays.

[0066] Reference Figure 1 、 11 As shown, the detection device also includes an outer box 7, which is a rectangular box and is arranged outside the manipulator 1, the loading and unloading unit 2, the unqualified unloading unit 3, the first detection unit 4, and the second detection unit 5. The outer box 7 is provided with a second through hole 71 at a position opposite the first silo 22 and the second silo 23. The drawer 221 is provided with a drawer door 2213, and the drawer door 2213 is covered by the second through hole 71. The manipulator 1, the loading and unloading unit 2, the unqualified unloading unit 3, the first detection unit 4, and the second detection unit 5 are all arranged in the outer box 7. The outer box 7 covers the entire detection device in an enclosed area, which can avoid the influence of the external environment and ensure safety. The drawer 221 can be pulled out of the second through hole 71 or pushed into the outer box 7 through the second through hole 71. Pulling out the drawer 221 is used to take out or put in the material tray in the drawer 221.

[0067] The number of the first through holes 248 is set to four, which are respectively arranged on the two opposite side walls of the outer box body 7, and two are respectively arranged on the opposite side walls of the outer box body 7. Because there are a loading and unloading unit 2 and an unqualified unloading unit 3, both units include a first silo 22 and a second silo 23, so the four first through holes 248 set can meet the needs of four drawers 221.

[0068] Reference Figure 13 、 14As shown, the first detection unit 4 and the second detection unit 5 have the same structure. The first detection unit 4 and the second detection unit 5 both include a detection mounting base plate 41 and a plurality of air-tightness detection devices 42. The plurality of air-tightness detection devices 42 are all arranged on the detection mounting base plate 41, and the plurality of air-tightness detection devices 42 are arranged in a row. The air-tightness detection devices 42 are used for air-tightness detection of workpieces; the air-tightness detection devices 42 include a detection base plate 421, a workpiece positioning fixture 422, a detection support frame 423 and a detection pressing device 424. The detection support frame 423 is installed on the detection base plate 421, and the detection pressing device 424 is installed on the detection support frame 423. The workpiece positioning fixture 422 is arranged on the detection base plate 421. A workpiece is arranged in the workpiece positioning fixture 422. The detection pressing device 424 is pressed down on the workpiece positioning fixture 422 for air-tightness detection of the workpiece.

[0069] Reference Figure 18-20 As shown, the workpiece positioning fixture 422 includes a workpiece placement block 4221, at least one blocking component 4222, an air joint 4223, and a detection joint 4224. The workpiece placement block 4221 is used to place the workpiece, the blocking component 4222 is used to block the workpiece in the workpiece placement block 4221, the air joint 4223 is used to inflate the workpiece in the workpiece placement block 4221, and a pressure sensor is installed at the detection joint 4224. The pressure sensor is used to detect the cavity pressure in the workpiece. The blocking component 4222 includes a slide 4225, a movable bracket 4226, and a blocking head 4227. The movable bracket 4226 is connected to the slider of the slide 4225. The blocking head 4227 is installed on the movable bracket 4226. The slide 4225 drives the movable bracket 4226 to move toward the workpiece, so that the blocking head 4227 blocks the opening of the workpiece.

[0070] Reference Figure 15 As shown, the detection pressing device 424 includes an electric cylinder 4241, a lifting frame 4242, a fine-tuning component 4243 and an upper blocking block 4244. The electric cylinder 4241 is installed on the detection support frame 423, and the output end of the electric cylinder 4241 is connected to the lifting frame 4242. The fine-tuning component 4243 is arranged on the lifting frame 4242. The upper blocking block 4244 is connected to the fine-tuning component 4243, and the fine-tuning component 4243 drives the upper blocking block 4244 to press and seal the workpiece in the workpiece positioning fixture 422.

[0071] Reference Figure 16 、 17As shown, the fine-tuning assembly 4243 includes a fine-tuning motor 4245, a fine-tuning driving wheel 4246, a fine-tuning driven wheel 4247, a fine-tuning screw 4248, a pressure sensor 4249, a moving rod 42410 and a fine-tuning belt 4240. The output end of the fine-tuning motor 4245 is connected to the fine-tuning driving wheel 4246, the fine-tuning driving wheel 4246 is connected to the fine-tuning driven wheel 4247 through the fine-tuning belt 4240, the fine-tuning driven wheel 4247 is installed on the fine-tuning screw 4248, and the screw nut on the fine-tuning screw 4248 is connected to the moving rod 42410 through the pressure sensor 4249. 10, the upper end of the moving rod 42410 is connected to the upper blocking block 4244, and after the electric cylinder 4241 drives the lifting frame 4242 to descend to a certain position, the fine-tuning motor 4245 is started, and the fine-tuning driving wheel 4246, the fine-tuning driven wheel 4247 and the fine-tuning belt 4240 drive the fine-tuning screw rod 4248 to rotate, thereby driving the screw nut on the fine-tuning screw rod 4248 to descend, and pressing the upper blocking block 4244 down on the workpiece in the workpiece placement block 4221 for graduation, wherein the pressure sensor 4249 is used to measure the clamping force between the upper blocking block 4244 and the workpiece.

[0072] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A multi-station automatic airtightness detection equipment, characterized in that: include: A manipulator, a loading and unloading unit, an unqualified unloading unit, a first detection unit, and a second detection unit, wherein the loading and unloading unit, the unqualified unloading unit, the first detection unit, and the second detection unit are respectively located on the four sides of the rectangular cross-section, and the manipulator is located in the middle of the loading and unloading unit, the unqualified unloading unit, the first detection unit, and the second detection unit; A manipulator that transfers workpieces within a circle with the manipulator's fixed mounting point as the center and the manipulator's arm length as the radius, the manipulator being used to load the workpieces in the loading and unloading unit to the first inspection unit and the second inspection unit, and the manipulator unloading the workpieces that have been inspected by the first inspection unit and the second inspection unit to the unqualified unloading unit; A loading and unloading unit is provided with a plurality of trays full of workpieces, and the trays full of workpieces are stacked into a stack. The loading and unloading unit is used to load the workpieces in the trays full of workpieces, and is also used to receive the qualified workpieces transferred by the robot; a first detection unit, which is used to receive the workpiece transferred by the robot, and the first detection unit is used to detect the air tightness of the workpiece; a second detection unit, which is used to receive the workpiece transferred by the robot, and the first detection unit is used to detect the air tightness of the workpiece, and the second detection unit and the first detection unit are independent working units; An unqualified unloading unit is provided with a stack of empty trays, and the empty trays are used to receive unqualified workpieces transferred by the robot; The first detection unit and the second detection unit have the same structure. Both the first detection unit and the second detection unit include a detection mounting base plate and a plurality of air tightness detection devices. The plurality of air tightness detection devices are all arranged on the detection mounting base plate, and the plurality of air tightness detection devices are arranged in a row. The air tightness detection devices are used for air tightness detection of workpieces. The air tightness detection devices include a detection base plate, a workpiece positioning fixture, a detection support frame and a detection pressing device. The detection support frame is mounted on the detection base plate, the detection pressing device is mounted on the detection support frame, the workpiece positioning fixture is arranged on the detection base plate, a workpiece is arranged in the workpiece positioning fixture, and the detection pressing device is pressed down on the workpiece positioning fixture for performing air tightness detection on the workpiece. The detection pressing device includes an electric cylinder, a lifting frame, a fine-tuning assembly and an upper blocking block. The electric cylinder is installed on the detection support frame, and the output end of the electric cylinder is connected to the lifting frame. The fine-tuning assembly is arranged on the lifting frame. The upper blocking block is connected to the fine-tuning assembly, and the fine-tuning assembly drives the upper blocking block to press and seal the workpiece in the workpiece positioning fixture. The fine-tuning assembly includes a fine-tuning motor, a fine-tuning driving wheel, a fine-tuning driven wheel, a fine-tuning screw, a pressure sensor, a moving rod and a fine-tuning belt. The output end of the fine-tuning motor is connected to the fine-tuning driving wheel, the fine-tuning driving wheel is connected to the fine-tuning driven wheel through the fine-tuning belt, the fine-tuning driven wheel is installed on the fine-tuning screw, the screw nut on the fine-tuning screw is connected to the upper end of the moving rod through the pressure sensor, and the lower end of the moving rod is connected to the upper blocking block. After the electric cylinder drives the lifting frame to descend to a certain position, the fine-tuning motor is started, and the fine-tuning screw is driven to rotate through the fine-tuning driving wheel, the fine-tuning driven wheel and the fine-tuning belt, thereby driving the screw nut on the fine-tuning screw to descend, and pressing the upper blocking block down on the workpiece in the workpiece placement block for indexing, wherein the pressure sensor is used to measure the clamping force between the upper blocking block and the workpiece.

2. The multi-station automatic airtightness detection equipment according to claim 1, characterized in that: The loading and unloading unit and the unqualified unloading unit are arranged opposite to each other, and the first detection unit and the second detection unit are arranged opposite to each other.

3. The multi-station automatic airtightness detection equipment according to claim 2, characterized in that: The detection device also includes a positioning unit, which is arranged in a circle with the fixed installation point of the manipulator as the center and the length of the manipulator's arm as the radius, and the positioning unit is used to scan and locate the workpiece to be detected.

4. The multi-station automatic airtightness detection equipment according to claim 1 or 3, characterized in that: The loading and unloading unit and the unqualified unloading unit have the same structure, and both the loading and unloading unit and the unqualified unloading unit include a frame, a first material bin, a second material bin and a material tray translation device. The first material bin and the second material bin are arranged side by side on the frame, and the material tray translation device is arranged on the upper end of the frame. The first material bin and the second material bin are used to set material trays, and the material tray translation device is used to transfer material trays between the first material bin and the second material bin.

5. The multi-station automatic airtightness detection equipment according to claim 4, characterized in that: The first material bin and the second material bin have the same structure. Both the first material bin and the second material bin include drawers, drawer slides, lifting devices, support plates, vertical guide rails and vertical sliders. The drawer slides are arranged on a frame. A stack of material trays is provided in the drawer. The drawer is slidably connected to the frame through the drawer slides. The drawer can move linearly relative to the frame. The lifting device and the vertical guide rails are both arranged on the frame. The support plate is connected to the lifting device, the vertical slider is fixedly connected to the support plate, and the vertical slider is slidably connected to the vertical guide rail. The lifting device drives the support plate to contact the end of the material tray extending out of the drawer, and the lifting device can drive the material tray to move up and down in the vertical direction.

6. The multi-station automatic airtightness detection equipment according to claim 5, characterized in that: The tray translation device includes a translation drive motor, a translation driving wheel, a translation driven wheel, a translation gear belt, a gear belt clamp, a mobile slide and several tray support assemblies. The output end of the translation drive motor is connected to the translation driving wheel, the translation driving wheel is connected to the translation driven wheel through the translation gear belt, the mobile slide is connected through the gear belt clamp and the translation gear belt, and the mobile slide is slidably connected to the frame. The several tray support assemblies are installed on the mobile slide. The mobile slide is a rectangular plate, and a first through hole is provided in the middle of the mobile slide. The several tray support assemblies are used to limit the tray within the first through hole.

7. The multi-station automatic airtightness detection equipment according to claim 6, characterized in that: The detection equipment also includes an outer box body, which is a rectangular box body, and the outer box body is arranged outside the manipulator, the loading and unloading unit, the unqualified unloading unit, the first detection unit and the second detection unit. The outer box body is arranged with a second through hole at a position opposite to the first silo and the second silo. A drawer door is provided on the drawer, and the drawer door cover is arranged at the second through hole.

8. The multi-station automatic airtightness detection equipment according to claim 1, characterized in that: The workpiece positioning fixture includes a workpiece placement block, at least one sealing component, an inflation joint and a detection joint. The workpiece placement block is used to place the workpiece, the sealing component is used to seal the workpiece in the workpiece placement block, the inflation joint is used to inflate the workpiece in the workpiece placement block, and a pressure sensor is installed at the detection joint, and the pressure sensor is used to detect the cavity pressure in the workpiece.

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