A solenoid valve air tightness test device

Abstract

The present invention discloses a solenoid valve air tightness test device, which relates to the field of solenoid valve processing technology, including a support seat and a test mechanism 2, wherein the support seat is provided with a test mechanism 1, a test mechanism 2 and a feeding mechanism, and a test mechanism 3 is provided on the test mechanism 2, wherein the test mechanism 1 includes a limit component 1 and a limit component 2 for limiting the position of the part to be detected, and a test table for converting the position of the part to be detected. The present invention cooperates with the test mechanism 1 and the feeding mechanism, and limits multiple solenoid valves at the same time in a group and in a group as a unit, which is convenient for subsequent detection operations, and can operate multiple groups continuously; the test mechanism 1 and the test mechanism 2 cooperate, which is convenient for multiple sealing of the top wall and the bottom wall of the part to be detected with a detection port, thereby enhancing the sealing effect; the test mechanism 2 and the test mechanism 3 cooperate to enhance the blocking strength at the port, and prevent incomplete blocking from affecting the accuracy of the detection result.

Description

Technical Field

[0001] The invention relates to the technical field of solenoid valve processing, and in particular to a solenoid valve air tightness testing device. Background Art

[0002] A solenoid valve is a valve that uses the electromagnetic principle to control the flow of fluid. The magnetic field generated by the electromagnetic coil drives the valve core to move, thereby achieving the function of opening and closing the fluid or regulating the flow rate in the pipeline. According to the port type, it can be classified into: two-way solenoid valve, three-way solenoid valve, four-way solenoid valve, etc.

[0003] In order to ensure that the solenoid valve can completely block the passage of fluid in the closed state, and can flow normally as expected in the open state, it is necessary to conduct an air tightness test on it before leaving the factory. The port of the solenoid valve is the channel for the fluid to enter and exit the solenoid valve. In the air tightness test of the solenoid valve, the positions of the parts to be tested are usually fixed one by one, and then all outlets except the solenoid valve are closed with sealing plugs, and the system is slowly inflated and pressurized to detect whether there is leakage during the pressurization process; however, the detection efficiency of single fixed limit one by one needs to be improved, and manual sorting of qualified and unqualified products is required according to the results displayed by the pressure system, which is not convenient for continuous operation of the equipment; secondly, the use of sealing plugs for sealing is of a single form, and the sealing strength at the port needs to be improved. Incomplete sealing will affect the accuracy of the test results.

[0004] Therefore, in order to improve the detection efficiency and the accuracy of the detection results, the present invention provides a solenoid valve air tightness testing device. Summary of the invention

[0005] The purpose of the present invention is to solve the problems existing in the prior art and to propose an air tightness testing device for a solenoid valve.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: an electromagnetic valve air tightness testing device, including a support seat and a test mechanism 2, the support seat is provided with a test mechanism 1, a test mechanism 2 and a feeding mechanism, and the test mechanism 2 is provided with a test mechanism 3; the test mechanism 1 includes a limit component 1 and a limit component 2 for limiting the position of the part to be tested, a test table for converting the position of the part to be tested, and a driving member for driving the limit component 2 to move, an annular slide rail is provided on the top wall of the support seat, and a circular ring-shaped test table is slidably connected to the annular slide rail through a plurality of electric sliders distributed along the circumferential direction.

[0007] The second testing mechanism comprises a support frame, a hydraulic rod 1, a support plate, and a sealing component 1 and a sealing component 2 for sealing the test port of the test piece to be tested, and an inverted L-shaped support frame is fixedly connected to the rear of the top wall of the support seat, and a vertically symmetrical slide groove 1 is opened on the front side wall of the support frame, and a support plate is slidably connected to the slide groove 1, and a left-right symmetrical hydraulic rod 1 is installed between the upper support plate and the bottom wall of the support frame and between the lower support plate and the top wall of the support seat, and the output ends of the hydraulic rod 1 are connected to the support plates.

[0008] In the above-mentioned solenoid valve air tightness testing device, the top wall of the test table is evenly arranged with four limit components 1, limit component 2 and driving components along the circumferential direction, and the limit component 1 includes a plurality of fixed plates fixed to the top wall of the test table, and the side walls of the fixed plates are symmetrically slidably connected to the upper limit component and the lower limit component in the shape of a U-shaped frame through a spring 1, and the bottom wall of the upper limit component and the top wall of the lower limit component are both clamped and connected with a rubber pad 1 in the shape of a U-shaped frame.

[0009] In the above-mentioned solenoid valve air tightness testing device, the limit component 2 includes a plurality of slide rails 1 opened on the test table, and the slide rail 1 is slidably connected with a movable plate parallel to the corresponding fixed plate through a spring 2, and the movable plate is hinged with an inner limit part on the side close to the fixed plate, and a groove matching the inner limit part is opened on the fixed plate, and the movable plate is slidably connected with an outer limit part on the side close to the fixed plate through a spring 3, the outer limit part is located at the end of the movable plate away from the inner limit part, and the side of the outer limit part close to the inner limit part is inclined.

[0010] In the above-mentioned solenoid valve air tightness testing device, four arc-shaped slide rails are opened on the bottom wall of the test table in the circumferential direction, and a driving member is slidably connected to the arc-shaped slide rail through an electric slider. The driving member is composed of a slider slidably connected to the arc-shaped slide rail and a plurality of push rods fixed on the side wall of the slider corresponding to the movable plate.

[0011] In the above-mentioned solenoid valve air tightness testing device, a plurality of sealing components are arranged on the bottom wall of the upper support plate, and the sealing component includes an upper sealing plate fixed to the bottom wall of the upper support plate, and an L-shaped part is fixed symmetrically on the side wall of the upper sealing plate, and two detachable sealing parts are installed in the middle of the bottom wall of the upper sealing plate, and the two L-shaped parts are respectively engaged and connected with the corresponding fixed plate and the top wall of the movable plate.

[0012] In the above-mentioned solenoid valve air tightness testing device, a sealing component 2 corresponding to the sealing component 1 above and below is provided on the top wall of the lower support plate, and the sealing component 2 includes a lower sealing plate fixed to the top wall of the lower support plate, and the side wall of the lower sealing plate is symmetrically fixed with an L-shaped component 2 matched with the L-shaped component 1, and a hole for the L-shaped component 2 to pass through is opened on the test table, the two L-shaped components 2 are respectively engaged with the bottom walls of the fixed plate and the movable plate, and a slot matched with the shape of the upper end of the L-shaped component 2 is opened at a lower end of the L-shaped component, and a detachable sealing component 2 is installed in the middle of the top wall of the lower sealing plate, and the bottom wall of the upper sealing plate and the top wall of the lower sealing plate are both engaged with a rubber pad 2 in the shape of a circular frame, and the size of the rubber pad 2 is smaller than that of the rubber pad 1.

[0013] In the above-mentioned solenoid valve air tightness testing device, the testing mechanism three includes a hydraulic rod two, and the top wall of the upper support plate and the bottom wall of the lower support plate are both symmetrically installed with the hydraulic rod two, and the output ends of the two corresponding hydraulic rods two on the left and right are commonly fixedly connected with an arc plate, and an air intake pipe corresponding to the sealing component two is fixedly penetrated on the lower support plate, and the air intake end of the air intake pipe is arranged inside the corresponding sealing component two, an air vent is opened on the top wall of the sealing component two, and a sealing assembly is arranged on the arc plate.

[0014] In the above-mentioned solenoid valve air tightness testing device, the sealing assembly includes an extrusion piece, and the bottom wall of the upper arc-shaped plate and the top wall of the lower arc-shaped plate are respectively fixedly connected with extrusion pieces corresponding to sealing piece one and sealing piece two, and the corresponding support plate is provided with holes for the extrusion piece to slide up and down, and the extrusion piece is composed of a round rod fixed to the arc plate and a plurality of arc strips fixed along the circumferential direction on the bottom wall of the round rod, the outer wall of the round rod of the extrusion piece is sleeved with a rubber ring one, and the arc strip of the extrusion piece slides up and down and passes through the corresponding upper sealing plate and lower sealing plate, and the top wall of the upper sealing plate and the bottom wall of the lower sealing plate are both snap-connected with a rubber ring two that matches the rubber ring one.

[0015] In the above-mentioned solenoid valve air tightness testing device, the top wall of the upper sealing plate and the bottom wall of the lower sealing plate are fixedly connected with a fixing rod arranged inside the corresponding sealing part 1 and the sealing part 2, and the side wall of the fixing rod is sleeved with two adjustment rings connected by a spring four for sliding up and down, the two adjustment rings are fixed to each other by a length condition, and the side walls of the adjustment rings are hinged with multiple connecting rods along the circumferential direction, and the ends of the multiple connecting rods away from the adjustment rings are hinged with extrusion plates, and the extrusion plates and the fixed rods are connected by a spring rod, and the multiple extrusion plates corresponding to the upper and lower parts are staggered.

[0016] In the above-mentioned solenoid valve air tightness testing device, the unloading mechanism includes a fixed platform, and the middle part of the top wall of the support seat is fixedly connected to the fixed platform, an arc-shaped slide groove 2 is opened on the right side of the top wall of the fixed platform, and an electric push rod 1 is slidably connected to the slide groove 2 through an electric slider, an electric push rod 2 is fixedly connected to the front part of the top wall of the fixed platform, and push plates are fixed to the output ends of the electric push rod 1 and the electric push rod 2.

[0017] Compared with the existing technology, the advantages of the present invention are: 1. Through the cooperation of the testing mechanism 1 and the unloading mechanism, multiple solenoid valves are limited at the same time, with multiple valves as a group and in groups as units, which is convenient for subsequent detection operations and can operate multiple groups continuously; the fixed plate, the movable plate, the inner limit member and the outer limit member cooperate to limit the horizontal direction, and the upper limit member and the lower limit member limit the vertical direction, so as to facilitate multi-directional limiting of the same batch; the electric push rod 1 pushes the unloading of unqualified products, and the electric push rod 2 pushes the unloading of qualified products.

[0018] 2. Through the cooperation between the test mechanism one and the test mechanism two, it is convenient to perform multiple sealing on the top wall and the bottom wall of the test piece with the test port, thereby enhancing the sealing effect; the upper sealing plate and the lower sealing plate are snap-fitted to the fixed plate and the movable plate, and the L-shaped part two and the L-shaped part one are snap-fitted to form a stable structure, which is conducive to enhancing the stability of the seal, thereby increasing the accuracy of the airtightness test.

[0019] 3. Through the cooperation of test mechanism 2 and test mechanism 3, the sealing strength at the port is enhanced to prevent incomplete sealing from affecting the accuracy of the test results. The extrusion plate is pushed by the connecting rod until the sealing part 1 or the sealing part 2 is pushed outward to expand tightly with the inner wall of the corresponding test port to seal it. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The specific embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings, wherein:

[0021] Figure 1 A schematic diagram of the overall structure.

[0022] Figure 2 It is a schematic diagram of the structure of the solenoid valve component to be tested.

[0023] Figure 3 It is a structural schematic diagram of the unloading mechanism.

[0024] Figure 4 This is a structural diagram of test organization one.

[0025] Figure 5 It is a schematic diagram of the structure of limit component one and limit component two.

[0026] Figure 6 It is a schematic diagram of the structure of the driving component.

[0027] Figure 7 This is a partial structural diagram of test organization two and test organization three.

[0028] Figure 8 This is a diagram of the structural changes of sealing parts one and two before and after sealing.

[0029] Fig. 9 It is a structural schematic diagram of the upper sealing plate and the upper limit member.

[0030] Fig.10 A schematic diagram of the partial structure of the sealing component.

[0031] Fig.11 Schematic diagram of the structure of the extrusion part.

[0032] In the figure: 1, support seat; 2, test mechanism 1; 21, test table; 22, limit assembly 1; 221, fixed plate; 222, upper limit piece; 223, lower limit piece; 23, limit assembly 2; 231, movable plate; 232, slide rail 1; 233, inner limit piece; 234, outer limit piece; 24, driving piece; 3, test mechanism 2; 31, support frame; 32, hydraulic rod 1; 33, support plate; 34, blocking assembly 1; 341, upper blocking plate; 342, L-shaped piece 1; 343. Sealing part one; 35. Sealing assembly two; 351. Lower sealing plate; 352. L-shaped part two; 353. Sealing part two; 4. Testing mechanism three; 41. Hydraulic rod two; 42. Arc plate; 43. Sealing assembly; 431. Extrusion part; 432. Adjusting ring; 433. Connecting rod; 434. Extrusion plate; 435. Spring rod; 436. Long condition; 437. Fixed rod; 44. Intake pipe; 5. Unloading mechanism; 51. Fixed table; 52. Electric push rod one; 53. Electric push rod two. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] Reference Figure 1 to Figure 2 A solenoid valve air tightness testing device comprises a support seat 1 and a testing mechanism 2 3, wherein the support seat 1 is provided with a testing mechanism 1 2, a testing mechanism 2 3 and a feeding mechanism 5, and the testing mechanism 2 3 is provided with a testing mechanism 3 4.

[0035] Reference Figure 1 and Figure 4The test mechanism 2 includes a limit component 1 22 and a limit component 23 for limiting the position of the part to be tested, a test table 21 for converting the position of the part to be tested, and a driving member 24 for driving the limit component 23 to move. An annular slide rail is provided on the top wall of the support seat 1, and a circular test table 21 is slidably connected to the annular slide rail through a plurality of electric sliders distributed along the circumferential direction.

[0036] Reference Figures 4 to 5 The top wall of the test table 21 is evenly provided with four limit components 1 22, limit components 23 and driving components 24 along the circumferential direction. The limit component 1 22 includes a plurality of fixing plates 221 fixed to the top wall of the test table 21. The side walls of the fixing plates 221 are symmetrically slidably connected with an upper limit component 222 and a lower limit component 223 in the shape of a circular frame through a spring 1 (not shown in the figure). The bottom wall of the upper limit component 222 and the top wall of the lower limit component 223 are both engaged with a rubber pad 1 in the shape of a circular frame.

[0037] Reference Figures 4 to 5 The limiting assembly 23 includes a plurality of slide rails 232 opened on the test table 21, and a movable plate 231 parallel to the corresponding fixed plate 221 is slidably connected to the slide rail 232 through a spring 2 (not shown in the figure), and an inner limiting piece 233 is hinged on the side of the movable plate 231 close to the fixed plate 221, and a groove matching the inner limiting piece 233 is opened on the fixed plate 221, and an outer limiting piece 234 is slidably connected to the side of the movable plate 231 close to the fixed plate 221 through a spring 3 (not shown in the figure), and the outer limiting piece 234 is located at an end of the movable plate 231 away from the inner limiting piece 233, and the side of the outer limiting piece 234 close to the inner limiting piece 233 is inclined.

[0038] Reference Figure 4 and Figure 6 The bottom wall of the test table 21 is provided with four arc-shaped slide rails along the circumferential direction, and a driving member 24 is slidably connected to the arc-shaped slide rails through an electric slider. The driving member 24 is composed of a slider slidably connected to the arc-shaped slide rails and a plurality of push rods fixed to the side walls of the sliders and corresponding to the movable plate 231.

[0039] The solenoid valve to be tested is a three-way solenoid valve, in which two ports are opened on the top wall and one port is opened on the bottom wall. The upper part of the support seat 1 is divided into four areas, namely the left loading area, the rear detection area, the right rejection area and the front unloading area. The test table 21 rotates clockwise on the support seat 1 to drive the solenoid valve to pass through the four areas in sequence, completing the operations of loading and limiting, detection, rejection of unqualified products and unloading of qualified products.

[0040] First, three parts to be inspected are placed between the inner limit piece 233 and the outer limit piece 234 on the side of the movable plate 231 corresponding to the loading area, and the driving member 24 is driven by the electric slider to slide on the arc slide rail, and the push rod of the driving member 24 pushes the corresponding movable plate 231 to slide toward the fixed plate 221 on the slide rail 1 232, and the movable plate 231 drives the parts to be inspected to move toward the fixed plate 221 until the lower limit piece 223 is engaged and connected with the fixed plate 221, and the fixed plate 221, the movable plate 231, the inner limit piece 233 and the outer limit piece 234 cooperate to limit the parts to be inspected in the horizontal direction, and the upper limit piece 222 and the lower limit piece 223 limit the parts to be inspected in the vertical direction, so as to facilitate multi-directional limitation of the positions of the parts to be inspected in the same batch of loading.

[0041] Reference Figure 7 The test mechanism 2 3 includes a support frame 31, a hydraulic rod 1 32, a support plate 33, and a blocking component 1 34 and a blocking component 2 35 for blocking the test port of the test piece to be tested. The rear part of the top wall of the support seat 1 is fixedly connected to the support frame 31 in an inverted L shape, and the front side wall of the support frame 31 is provided with a vertically symmetrical slide groove 1, and the slide groove 1 is slidably connected to the support plate 33. The left-right symmetrical hydraulic rods 1 32 are installed between the upper support plate 33 and the bottom wall of the support frame 31 and between the lower support plate 33 and the top wall of the support seat 1, and the output ends of the hydraulic rods 1 32 are connected to the support plate 33.

[0042] Reference Figures 7 to 9 The bottom wall of the upper support plate 33 is provided with a plurality of blocking components 34, and the blocking component 34 includes an upper blocking plate 341 fixed to the bottom wall of the upper support plate 33, and an L-shaped piece 342 is fixed symmetrically to the side wall of the upper blocking plate 341, and two detachable blocking pieces 343 are installed in the middle of the bottom wall of the upper blocking plate 341, and the two L-shaped pieces 342 are respectively engaged with the corresponding fixed plate 221 and the top wall of the movable plate 231.

[0043] Reference Figures 7 and 8 The top wall of the support plate 33 on the lower side is provided with a blocking component 2 35 corresponding to the blocking component 1 34 up and down. The blocking component 2 35 includes a lower blocking plate 351 fixed to the top wall of the support plate 33 on the lower side. The side walls of the lower blocking plate 351 are symmetrically fixed with L-shaped components 2 352 adapted to the L-shaped component 1 342. Holes for the L-shaped components 2 352 to pass through are opened on the test table 21. The two L-shaped components 2 352 are respectively engaged with the bottom walls of the fixed plate 221 and the movable plate 231. A slot adapted to the shape of the upper end of the L-shaped component 1 342 is opened at the lower end of the L-shaped component 1 342. A detachable blocking component 2 353 is installed in the middle of the top wall of the lower blocking plate 351. The bottom wall of the upper blocking plate 341 and the top wall of the lower blocking plate 351 are both engaged with a rubber pad 2 in the shape of a circular frame, and the size of the rubber pad 2 is smaller than that of the rubber pad 1.

[0044] The electric slider drives the test table 21 to rotate ninety degrees clockwise, and the batch of parts to be tested are moved to the testing area after being limited. The output end of the hydraulic rod 32 moves to drive the upper and lower support plates 33 to approach each other, and the support plates 33 slide on the support frame 31. The upper support plate 33 drives the blocking component 1 34 to move downward, and the lower support plate 33 drives the blocking component 2 35 to move upward. The blocking component 1 34 and the blocking component 2 35 correspond to the parts to be tested up and down.

[0045] The upper sealing plate 341 moves downward until it engages with the corresponding top walls of the fixed plate 221 and the movable plate 231. During the downward movement, the upper sealing plate 341 pushes the upper limit member 222 to slide downward on the side wall of the fixed plate 221 until the rubber pad 1 of the upper limit member 222 is pressed against the top wall of the part to be detected. After the movement stops, the rubber pad 2 at the bottom of the upper sealing plate 341 is pressed against the top wall of the part to be detected.

[0046] The lower sealing plate 351 moves upward until it engages with the corresponding bottom walls of the fixed plate 221 and the movable plate 231. During the upward movement, the lower sealing plate 351 pushes the lower limit member 223 to slide upward on the side wall of the fixed plate 221 until the rubber pad 1 of the lower limit member 223 is pressed against the bottom wall of the part to be detected. After the movement stops, the rubber pad 2 on the top of the lower sealing plate 351 is pressed against the bottom wall of the part to be detected.

[0047] The rubber pad 1 in the shape of a U-shaped frame is located on the outside of the rubber pad 2 in the shape of a U-shaped frame, so as to perform multiple sealing on the top wall and the bottom wall of the inspected part to enhance the sealing effect; and the upper sealing plate 341 and the lower sealing plate 351 are snap-fitted to the fixed plate 221 and the movable plate 231, and the L-shaped part 2 352 and the L-shaped part 1 342 are snap-fitted to form a stable structure, which is beneficial to enhance the stability of the sealing and thereby increase the accuracy of the airtightness detection.

[0048] Two sealing parts 1 343 enter into two detection ports corresponding to the top wall of the part to be detected, and one sealing part 2 353 enters into one detection port corresponding to the bottom wall of the part to be detected. The sealing parts 1 343 and 353 are threadedly connected and installed with the corresponding upper sealing plate 341 and lower sealing plate 351 through an annular mounting seat. The material of the sealing parts 1 343 and 353 is rubber.

[0049] Reference Figures 7 and 8The test mechanism three 4 includes a hydraulic rod two 41, and the top wall of the upper support plate 33 and the bottom wall of the lower support plate 33 are symmetrically installed with hydraulic rods two 41, and the output ends of the two corresponding hydraulic rods two 41 on the left and right are fixedly connected with an arc plate 42. An air inlet pipe 44 corresponding to the blocking piece two 353 is fixedly penetrated on the lower support plate 33, and the air inlet end of the air inlet pipe 44 is arranged inside the corresponding blocking piece two 353. An air vent is opened on the top wall of the blocking piece two 353, and a sealing assembly 43 is arranged on the arc plate 42.

[0050] Reference Figure 8 , Fig.10 and Fig.11 The sealing assembly 43 includes an extrusion piece 431. The bottom wall of the upper arc plate 42 and the top wall of the lower arc plate 42 are respectively fixedly connected with the extrusion pieces 431 corresponding to the sealing piece 1 343 and the sealing piece 2 353. The corresponding support plate 33 is provided with holes for the extrusion piece 431 to slide up and down. The extrusion piece 431 is composed of a round rod fixed to the arc plate 42 and a plurality of arc strips fixed along the circumferential direction on the bottom wall of the round rod. The outer wall of the round rod of the extrusion piece 431 is sleeved with a rubber ring 1. The arc strip of the extrusion piece 431 slides up and down and passes through the corresponding upper sealing plate 341 and the lower sealing plate 351. The top wall of the upper sealing plate 341 and the bottom wall of the lower sealing plate 351 are both engaged with a rubber ring 2 that matches the rubber ring 1.

[0051] Reference Figure 8 and Fig.10 The top wall of the upper blocking plate 341 and the bottom wall of the lower blocking plate 351 are fixedly connected with a fixing rod 437 arranged inside the corresponding blocking piece 1 343 and the blocking piece 2 353. The side wall of the fixing rod 437 is sleeved with two adjusting rings 432 which are slidably connected up and down by a spring 4 (not shown in the figure). The two adjusting rings 432 are fixed to each other by a long condition 436. The side wall of the adjusting ring 432 is hinged with a plurality of connecting rods 433 along the circumferential direction. The ends of the plurality of connecting rods 433 away from the adjusting ring 432 are hinged with an extrusion plate 434. The extrusion plate 434 and the fixing rod 437 are connected by a spring rod 435. The corresponding plurality of extrusion plates 434 are staggeredly distributed above and below.

[0052] When the sealing member 1 343 and the sealing member 2 353 complete the sealing of the detection port, the output end of the hydraulic rod 2 41 moves to drive the upper and lower arc plates 42 to move toward the corresponding upper and lower support plates 33, driving the arc strip of the extrusion member 431 to slide through the support plate 33, and the rubber ring 1 of the extrusion member 431 is tightly attached to the top wall of the corresponding upper sealing plate 341 and the rubber ring 2 of the bottom wall of the lower sealing plate 351, so that a relatively sealed state is formed between the extrusion member 431 and the corresponding upper sealing plate 341 and the lower sealing plate 351.

[0053] The arc-shaped strip of the extrusion piece 431 moves into the corresponding sealing piece 1 343 and the sealing piece 2 353, pushing the corresponding adjustment ring 432 to slide downward on the outer wall of the fixed rod 437, and the long condition 436 and the other adjustment ring 432 move synchronously. The end of the connecting rod 433 rotates to adapt, and the connecting rod 433 changes from an inclined state to a nearly horizontal state. The connecting rod 433 pushes the extrusion plate 434 to approach and fit closely to the inner wall of the corresponding sealing piece 1 343 or the sealing piece 2 353 until the sealing piece 1 343 or the sealing piece 2 353 is pushed outward to expand tightly against the inner wall of the corresponding detection port to seal and block it. The spring rod 435 then adaptively extends, and the two sets of staggered extrusion plates 434 increase the surface area of ​​the sealing piece 1 343 or the sealing piece 2 353 that fits against the inner wall of the corresponding detection port to avoid affecting the accuracy of the detection result due to incomplete sealing.

[0054] After the plugging is completed, gas is injected into the interior of the sealing member 2 353 through the air inlet pipe 44, and the gas enters the interior of the part to be tested through the air vent of the sealing member 2 353. The pressure change inside the part to be tested is detected by an external pressure detection device to detect whether the part to be tested is leaking. After the detection is completed, the test mechanism 2 3 and the test mechanism 3 4 are reset, and the test table 21 drives this batch of test parts to continue to rotate ninety degrees to enter the rejection area. During this process, the driving member 24 and the limit assembly 2 23 are reset to release the limit on the test part.

[0055] Reference Figure 1 and Figure 3 The unloading mechanism 5 includes a fixed platform 51, and the middle part of the top wall of the support seat 1 is fixedly connected to the fixed platform 51, and the right side of the top wall of the fixed platform 51 is provided with an arc-shaped slide groove 2, and the slide groove 2 is slidably connected to an electric push rod 1 52 through an electric slider, and the front part of the top wall of the fixed platform 51 is fixedly connected to an electric push rod 2 53, and the output ends of the electric push rod 1 52 and the electric push rod 2 53 are fixed with push plates.

[0056] When this batch of inspection parts moves to the rejection area, the electric slider drives the electric push rod 52 to rotate to the corresponding position of the unqualified products, the output end of the electric push rod 52 extends, and the push plate pushes the inner limit member 233 to rotate toward the corresponding movable plate 231. The unqualified products push the inclined outer wall of the outer limit member 234, and the outer limit member 234 slides toward the corresponding movable plate 231 until the unqualified products are pushed off the top of the test table 21.

[0057] After the unqualified products are removed, the test table 21 continues to drive the batch of test pieces to continue rotating 90 degrees into the unloading area, and the extended end of the electric push rod 2 53 extends to push the qualified products away from the top of the test table 21 and into the conveying device connected to the front side of the device.

[0058] In summary, this equipment can perform air tightness tests on multiple solenoid valves at the same time, and the processes of loading, testing, rejecting, and unloading qualified products can be performed continuously, effectively improving the overall testing efficiency.

[0059] Reference Figures 1 to 11 The specific operation steps of the solenoid valve air tightness test device are as follows: first, three parts to be tested are placed between the inner limit member 233 and the outer limit member 234 in the loading area, and the driving member 24 drives the movable plate 231 to drive the parts to be tested to move toward the fixed plate 221, and the limit component 1 22 and the limit component 2 23 limit the positions of the parts to be tested in the same batch of loading in multiple directions.

[0060] After being limited, the batch of parts to be inspected moves to the inspection area along with the test table 21, and the hydraulic rod 1 32 drives the sealing component 1 34 and the sealing component 2 35 to be close to the parts to be inspected. The rubber pad 2 of the upper sealing plate 341 and the lower sealing plate 351 and the rubber pad 1 of the upper limit member 222 and the lower limit member 223 are close to the parts to be inspected, and multiple sealing is performed on the top wall and the bottom wall of the parts to be inspected with the inspection port; the sealing member 1 343 and the sealing member 2 353 block the inspection port, and are driven by the hydraulic rod 2 41 to squeeze the plate 434 until the sealing member 1 343 or the sealing member 2 353 is pushed outward to expand and fit closely with the inner wall of the corresponding inspection port to prevent incomplete sealing.

[0061] After the plugging is completed, gas is injected into the second plugging piece 353 through the air inlet pipe 44 to detect whether the inspected piece is leaking; after the detection is completed, unqualified products are pushed out by the electric push rod 1 52, and qualified products are pushed out by the electric push rod 2 53.

[0062] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A solenoid valve air tightness test device, comprising a support seat and a test mechanism 2, characterized in that: The support seat is provided with a test mechanism 1, a test mechanism 2 and a material discharge mechanism, and the test mechanism 2 is provided with a test mechanism 3; The test mechanism 1 includes a limit assembly 1 and a limit assembly 2 for limiting the position of the to-be-tested piece, a test table for changing the position of the to-be-tested piece, and a driving member for driving the limit assembly 2 to move. The top wall of the support seat is provided with an annular slide rail, and the annular slide rail is slidably connected to the test table in an annular shape through a plurality of electric sliders distributed along the circumferential direction. The second test mechanism comprises a support frame, a hydraulic rod 1, a support plate, and a blocking component 1 and a blocking component 2 for blocking the test port of the test piece to be tested, and the rear part of the top wall of the support seat is fixedly connected to the support frame in an inverted L shape, the front side wall of the support frame is provided with a vertically symmetrical slide groove 1, and the slide groove 1 is slidably connected to the support plate, and a left-right symmetrical hydraulic rod 1 is installed between the upper support plate and the bottom wall of the support frame and between the lower support plate and the top wall of the support seat, and the output end of the hydraulic rod 1 is connected to the support plate; The bottom wall of the upper support plate is provided with a plurality of blocking components 1, and the top wall of the lower support plate is provided with a blocking component 2 corresponding to the blocking component 1 up and down; The testing mechanism three includes a hydraulic rod two, and the top wall of the upper support plate and the bottom wall of the lower support plate are symmetrically installed with the hydraulic rod two, and the output ends of the two corresponding hydraulic rods two on the left and right are commonly fixedly connected with an arc plate, and an air intake pipe corresponding to the sealing component two is fixedly penetrated on the lower support plate, and the air intake end of the air intake pipe is arranged inside the corresponding sealing component two, an air vent is opened on the top wall of the sealing component two, and a sealing assembly is arranged on the arc plate.

2. The solenoid valve air tightness testing device according to claim 1, characterized in that: The top wall of the test table is evenly provided with four limit components 1, limit component 2 and driving parts along the circumferential direction, and the limit component 1 includes a plurality of fixed plates fixed to the top wall of the test table, and the side walls of the fixed plates are symmetrically slidably connected with an upper limit component and a lower limit component in the shape of a circular frame through a spring 1, and the bottom wall of the upper limit component and the top wall of the lower limit component are both engaged with a rubber pad 1 in the shape of a circular frame.

3. The solenoid valve air tightness testing device according to claim 2, characterized in that: The limiting component 2 includes a plurality of slide rails 1 opened on the test table, a movable plate parallel to the corresponding fixed plate is slidably connected to the slide rail 1 through a spring 2, and an inner limiting piece is hinged on the side of the movable plate close to the fixed plate, a groove matching the inner limiting piece is opened on the fixed plate, and an outer limiting piece is slidably connected to the side of the movable plate close to the fixed plate through a spring 3, the outer limiting piece is located at an end of the movable plate away from the inner limiting piece, and the side of the outer limiting piece close to the inner limiting piece is inclined.

4. The solenoid valve air tightness testing device according to claim 3, characterized in that: The bottom wall of the test table is provided with four arc-shaped slide rails along the circumferential direction, and a driving member is slidably connected to the arc-shaped slide rails through an electric slider. The driving member is composed of a slider slidably connected to the arc-shaped slide rails and a plurality of push rods fixed to the side walls of the sliders and corresponding to the movable plates.

5. The solenoid valve air tightness testing device according to claim 3, characterized in that: A sealing component includes an upper sealing plate fixed to the bottom wall of the upper support plate, an L-shaped piece is symmetrically fixed to the side wall of the upper sealing plate, and two detachable sealing pieces are installed in the middle of the bottom wall of the upper sealing plate, and the two L-shaped pieces are respectively engaged and connected with the corresponding fixed plate and the top wall of the movable plate.

6. The solenoid valve air tightness testing device according to claim 5, characterized in that: The second sealing component includes a lower sealing plate fixed to the top wall of the supporting plate on the lower side, and the side wall of the lower sealing plate is symmetrically fixed with an L-shaped part 2 matched with the L-shaped part 1, and a hole for the L-shaped part 2 to pass through is opened on the test table, the two L-shaped parts 2 are respectively engaged with the bottom walls of the fixed plate and the movable plate, and a slot matched with the shape of the upper end of the L-shaped part 2 is opened at a lower end of the L-shaped part, and a detachable sealing part 2 is installed in the middle of the top wall of the lower sealing plate, and the bottom wall of the upper sealing plate and the top wall of the lower sealing plate are both engaged with a rubber pad 2 in the shape of a circular frame, and the size of the rubber pad 2 is smaller than that of the rubber pad 1.

7. The solenoid valve air tightness testing device according to claim 1, characterized in that: The sealing assembly includes an extrusion piece, and the bottom wall of the upper arc-shaped plate and the top wall of the lower arc-shaped plate are respectively fixedly connected with extrusion pieces corresponding to sealing piece 1 and sealing piece 2, and the corresponding support plate is provided with holes for the extrusion piece to slide up and down, and the extrusion piece is composed of a round rod fixed to the arc plate and a plurality of arc strips fixed along the circumferential direction of the bottom wall of the round rod, a rubber ring 1 is sleeved on the outer wall of the round rod of the extrusion piece, and the arc strip of the extrusion piece slides up and down and passes through the corresponding upper sealing plate and lower sealing plate, and the top wall of the upper sealing plate and the bottom wall of the lower sealing plate are both snap-connected with a rubber ring 2 that matches the rubber ring 1.

8. The solenoid valve air tightness testing device according to claim 7, characterized in that: The top wall of the upper sealing plate and the bottom wall of the lower sealing plate are fixedly connected with a fixing rod arranged inside the corresponding sealing part 1 and the sealing part 2, and the side wall of the fixing rod is sleeved with two adjusting rings connected by a spring four for sliding up and down connection, the two adjusting rings are fixed to each other by a length condition, and the side walls of the adjusting rings are hinged with a plurality of connecting rods along the circumferential direction, and the ends of the plurality of connecting rods away from the adjusting rings are hinged with an extrusion plate, and the extrusion plate and the fixing rod are connected by a spring rod, and the plurality of corresponding extrusion plates are staggeredly distributed above and below.

9. The solenoid valve air tightness testing device according to claim 1, characterized in that: The unloading mechanism includes a fixed platform, and the middle part of the top wall of the support seat is fixedly connected to the fixed platform, an arc-shaped slide groove 2 is opened on the right side of the top wall of the fixed platform, and an electric push rod 1 is slidably connected to the slide groove 2 through an electric slider, an electric push rod 2 is fixedly connected to the front part of the top wall of the fixed platform, and push plates are fixed to the output ends of the electric push rods 1 and 2.

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