Leak assembly machine

Abstract

The application discloses an inner leakage assembly assembling machine, which comprises a rotating disc provided with a plurality of toolings, a spring seat feeding station, a silica gel gasket mounting station, a one-way valve core mounting station, a turnover station, a spring feeding station, a spring pressing station and a discharging station which are distributed along the circumferential outer side of the rotating disc, intermittent rotation of the rotating disc causes the toolings to correspond to the stations in sequence; the turnover station is provided with a turnover mechanical arm, the turnover mechanical arm turns over 180 DEG after clamping a workpiece of a corresponding tooling so that the bottom end of the one-way valve core faces downward; the spring feeding station feeds a spring around the one-way valve core; the spring pressing station is provided with a petal-shaped stamping head which can move up and down, the petal-shaped stamping head comprises a plurality of petal-shaped pressing pieces which are suspended downward, and each pressing piece can expand outward against a certain elastic force. The application realizes the automatic assembly of the inner leakage assembly through a certain mounting sequence and turnover action, greatly improves the assembly efficiency and reduces the labor cost compared with manual assembly, and meanwhile, the assembly quality can be ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of safety valve automatic assembly, in particular to an inner leakage assembly assembling machine. BACKGROUND

[0002] The safety valve is a kind of special valve, and its particularity is that it is different from other valves which only play a role of opening and closing, and more importantly, it plays a role of protecting the safety of equipment. The safety valve has a precise and complex internal structure, and the installation process is also relatively cumbersome. Generally, the assembly of components such as inner leakage assembly needs to be carried out first, and then the whole assembly is carried out.

[0003] As an installation accessory of the safety valve, the inner leakage assembly needs to sequentially sleeve the silica gel gasket, spring seat and spring on the one-way valve core. The most important step is to clamp the smaller end of the spring into the convex ring in the middle of the one-way valve core. Due to the particularity of the structure, it is difficult to automate the assembly process. SUMMARY

[0004] The purpose of the present application is to provide an inner leakage assembly assembling machine which can realize automatic assembly of the inner leakage assembly, so as to improve the assembly efficiency, reduce the labor cost and improve the degree of automation.

[0005] In order to achieve the above purpose, the present application provides the following technical scheme:

[0006] The inner leakage assembly assembling machine, the inner leakage assembly includes a one-way valve core and silica gel gaskets, spring seats and springs which are sequentially sleeved on the one-way valve core, the opposite middle part of the one-way valve core is provided with a convex ring for limiting the spring, and the end of the one-way valve core with a flat base is defined as the bottom end; the inner leakage assembly assembling machine includes a rotating disc provided with a plurality of toolings and a spring seat feeding station, a silica gel gasket mounting station, a one-way valve core mounting station, a turnover station, a spring feeding station, a spring pressing station and a discharging station which are distributed along the circumferential outer side of the rotating disc, and the intermittent rotation of the rotating disc makes the toolings correspond to the stations in turn;

[0007] The spring seat feeding station, the silica gel gasket mounting station and the one-way valve core mounting station sequentially install the spring seat, the silica gel gasket and the one-way valve core on the tooling in the direction of the bottom end of the one-way valve core upwards;

[0008] The turnover station is provided with a turnover manipulator, and the turnover manipulator clamps the workpiece of the corresponding tooling and then turns over 180° so that the bottom end of the one-way valve core faces downward;

[0009] The spring feeding station sleeves the spring on the one-way valve core;

[0010] The spring pressing station is provided with a petal-shaped stamping head which can move up and down, and the petal-shaped stamping head includes a plurality of petal-shaped downward overhanging pressing pieces, and each pressing piece can expand outwardly against a certain elastic force.

[0011] As preferred, the spring seat, silica gel pad, one-way valve core and spring are respectively fed by a vibration plate.

[0012] As preferred, the silica gel pad mounting station is provided with a silica gel pad mounting manipulator, which is provided with a plug rod and a material returning frame capable of moving relative to the plug rod.

[0013] As preferred, the rear of the silica gel pad mounting station is provided with a silica gel pad detection station, which is provided with a displacement sensor.

[0014] As preferred, the one-way valve core mounting station is provided with a one-way valve core mounting manipulator, which comprises a vacuum suction rod.

[0015] As preferred, the turnover manipulator comprises a rotary cylinder and a clamp cylinder arranged at the output end of the rotary cylinder, and one side of the fingers of the clamp cylinder is provided with a bottom support.

[0016] As preferred, the turnover station is further provided with a top rod capable of moving up and down above the tooling, and the bottom end surface of the top rod is provided with a hole for inserting the one-way valve core.

[0017] As preferred, the spring pressing-in station further comprises a clamping device arranged above the corresponding tooling for fixing the spring seat.

[0018] As preferred, the upper side of the clamping device is further provided with a virtual clamping device for virtually clamping the one-way valve core, and the virtual clamping device can be opened under an external force overcoming a certain elastic force.

[0019] As preferred, the discharging station is provided with a transition detection tooling and a discharging manipulator for clamping the workpiece from the tooling to the transition detection table; the transition detection tooling is correspondingly provided with two blow pipes capable of blowing the workpiece in different directions;

[0020] The middle of the transition detection tooling is provided with a hole with a size greater than the size of one end of the one-way valve core having a flat surface, and the side surface of the transition detection tooling is provided with an infrared sensor for detecting whether the one-way valve core falls off and corresponding to the working of different blow pipes.

[0021] The present application has the following beneficial effects compared with the prior art:

[0022] 1. The present application realizes the automatic assembly of the inner leakage assembly through a certain mounting sequence and turnover action, greatly improves the assembly efficiency and reduces the labor cost compared with manual assembly, and can ensure the assembly quality.

[0023] 2. The present application realizes the stable stamping of the spring through a unique stamping structure, and ensures the stability during anchor pressing through double clamping.

[0024] 3、The application can automatically remove defective products by detecting the correct installation of components through sensors and corresponding the detection results with the output. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is the exploded view of the internal leakage assembly in the application.

[0026] Figure 2 is the structural schematic diagram of the completed assembly of the internal leakage assembly in the application.

[0027] Figure 3 is the overall schematic diagram of the assembly machine in the application.

[0028] Figure 4 is the work station distribution diagram of the assembly machine in the application.

[0029] Figure 5 is the structural schematic diagram of the spring seat feeding station in the application.

[0030] Figure 6 is the structural schematic diagram of the silica gel gasket installation station and silica gel gasket detection station in the application.

[0031] Figure 7 is the structural schematic diagram of the silica gel gasket according to the mechanical hand in the application.

[0032] Figure 8 is the structural schematic diagram of the one-way valve core installation station in the application.

[0033] Figure 9 is the structural schematic diagram of the turnover station in the application.

[0034] Figure 10 is the structural schematic diagram of the turnover mechanical hand in the application.

[0035] Figure 11 is the structural schematic diagram of the spring feeding station and spring pressing station in the application.

[0036] Figure 12 is the detailed schematic diagram of the spring pressing station in the application.

[0037] Figure 13 is the structural schematic diagram of the output station in the application.

[0038] In the above-mentioned work station schematic diagrams, the structures of the remaining work stations are hidden to avoid too many graphics leading to unclear diagrams.

[0039] In the diagram: 10, spring seat; 20, silica gel gasket; 30, one-way valve core; 40, spring;

[0040] 1, turntable, 11, tooling;

[0041] 2. spring seat loading station, 21, spring seat loading manipulator;

[0042] 3. silica gel gasket installation station, 31, silica gel gasket installation manipulator, 32, insertion rod, 33, material return frame;

[0043] 4. silica gel gasket detection station, 41, displacement sensor;

[0044] 5. one-way valve core installation station, 51, one-way valve core installation manipulator, 52, vacuum suction rod;

[0045] 6. turnover station, 61, turnover manipulator, 62, rotary cylinder, 63, bottom support, 64, ejector rod;

[0046] 7. spring loading station, 71, spring loading manipulator;

[0047] 8. spring pressing station, 81, petal-shaped stamping head, 82, tight clamping device, 83, loose clamping device;

[0048] 9. discharge station, 91, transition detection tooling, 92, discharge manipulator, 93, infrared sensor. DETAILED DESCRIPTION

[0049] In order to make the purpose, technical scheme and advantages of the present application more clear and apparent, the present application will be further specifically described below through examples.

[0050] Example 1

[0051] Referring to Figures 1-2 The internal leakage assembly of the present embodiment comprises a one-way valve core 30 having a flat base at one end, and a silica gel gasket 20, a spring seat 10 and a conical spring 40 which are sequentially sleeved on the one-way valve core 30. The opposite middle part of the one-way valve core 30 is provided with a protruding ring for limiting the spring. When installing, the smaller end of the spring 40 needs to be pressed into the lower part of the protruding ring. After installation, the one-way valve core 30 will not be separated from other components under the action of the spring 40. The installation sequence of the present embodiment is reasonably adjusted. The silica gel gasket 20 is sleeved on the protrusion at the top end of the spring seat 10 first, then the small end of the one-way valve core 30 is inserted downward into the spring seat 10, and then the whole is turned over by 180°, the spring 40 is installed on the one-way valve core 30, and then the spring 40 is pressed in.

[0052] The internal leakage assembly assembly machine of the present embodiment, such as Figures 3-13As shown, the rotary table 1 is provided with a plurality of (e.g. 8-12) tooling fixtures 11, and the spring seat loading station 2, the silica gel gasket mounting station 3, the silica gel gasket detection station 4, the one-way valve core mounting station 5, the turnover station 6, the spring loading station 7, the spring pressing station 8, and the discharge station 9 are arranged in sequence along the circumferential outer side of the rotary table 1 in clockwise direction. The rotary table 1 rotates in clockwise direction intermittently so that the tooling fixtures 11 are sequentially corresponding to the above-mentioned stations. The rotary table 1 is provided in a circular ring shape so as to facilitate the arrangement of some components which need to be operated from inside to outside, such as the discharge device, at the middle position of the rotary table 1.

[0053] In the above structure, the tooling fixture 11 is matched with the bottom shape of the spring seat 10, and a through hole is formed in the middle of the tooling fixture 11 so as to facilitate the insertion of the end of the one-way valve core 30.

[0054] The spring seat loading station 2 is provided with a spring seat loading manipulator 21, which includes a gripper cylinder having vertical and horizontal degrees of freedom, and the two degrees of freedom are respectively driven by the cylinder. The spring seat 10 is fed by a vibrating disc, and then is gripped by the spring seat loading manipulator 21 to the corresponding tooling fixture.

[0055] The silica gel gasket mounting station 3 is provided with a silica gel gasket mounting manipulator 31 also having vertical and horizontal degrees of freedom provided by a cylinder, and the silica gel gasket mounting manipulator 31 is provided with a inserting rod 32 and a material withdrawal frame 33 capable of moving relative to the inserting rod 32. The movement of the material withdrawal frame 33 is controlled by a cylinder fixed relative to the inserting rod 32. After the silica gel gasket 20 is fed by a vibrating disc, the inserting rod 32 is inserted from the middle of the silica gel gasket, so that the silica gel gasket is fixed on the inserting rod 32. After moving to above the spring seat in the corresponding tooling fixture, the inserting rod 32 is moved downward to abut against the top end protrusion of the spring seat. Then, the material withdrawal frame 33 is moved downward relative to the inserting rod 32 to push out the silica gel gasket so as to be sleeved on the top end protrusion of the spring seat (the outer diameter of the inserting rod is equivalent to the outer diameter of the top end protrusion of the spring seat), thereby completing the installation of the silica gel gasket 20.

[0056] The silica gel gasket detection station 4 is provided with a displacement sensor 41 capable of moving downward. Since the silica gel gasket 20 has a certain thickness, the displacement of the measuring head after touching the silica gel gasket 20 can be used to detect whether the silica gel gasket is correctly installed. If the detection result is incorrect installation, the subsequent stations will not work and will be rejected by the discharge station described below. If the detection result is correct installation, the subsequent stations will work normally.

[0057] The one-way valve core installation station 5 is provided with a one-way valve core installation mechanical arm 51 also having vertical and horizontal freedom degrees provided by a cylinder. Since the one-way valve 30 has a flat base at one end, the one-way valve core installation mechanical arm 51 uses a vacuum suction rod 52 to take the one-way valve core 30. The vacuum suction rod 52 is hollow inside, and the tail end is connected to a vacuum generator to suck the one-way valve core 30 by forming negative pressure in the rod. After the one-way valve core 30 is fed by a vibrating disc, it is sucked by the one-way valve core installation mechanical arm 51 and inserted into the middle of the spring seat on the corresponding tool.

[0058] The turnover station 6 is provided with a turnover mechanical arm 61 having vertical freedom degree provided by a cylinder. The turnover mechanical arm 61 includes a rotary cylinder 62 and a clamp cylinder arranged at the output end of the rotary cylinder. The fingers of the clamp cylinder match the outer diameter of the spring seat 10, and one side surface is provided with a bottom support 63, so that the spring seat 10 can be clamped and closed to form a baffle on the side surface to avoid the one-way valve core 30 from falling after turnover. When turning over, the turnover mechanical arm 61 first moves downward to the corresponding position, the clamp cylinder clamps the spring seat 10, and at this time the bottom support 63 is located at the opposite upper part of the workpiece; then it moves upward to a certain height and starts to turn over, so that the top end of the one-way valve core 30 is upward, and at this time the one-way valve core 30 will not fall downward due to the blockage of the bottom support 63. When the workpiece is placed back on the tooling, it is difficult to place it in place if it is not positioned, therefore the top of the tooling is also provided with a top rod 64 driven by a cylinder and capable of moving up and down. The bottom end surface of the top rod 64 is provided with a hole for the top end of the one-way valve core 30 to insert, and before the workpiece is returned to the home position, the top rod 64 first moves downward to insert the one-way valve core 30 for positioning, and then the clamp cylinder releases the workpiece. The workpiece is accurately returned to the tooling with the positioning of the top rod.

[0059] The spring feeding station 7 is provided with a spring feeding mechanical arm 71 also having vertical and horizontal freedom degrees provided by a cylinder. The spring 40 is fed by a vibrating disc, and then clamped and sleeved to the one-way valve core 30 of the corresponding tooling by the spring feeding mechanical arm 71.

[0060] The spring pressing station 8 is provided with a petal-shaped stamping head 81 capable of moving up and down driven by a pneumatic cylinder and a clamping device 82 and a virtual clamping device 83 for auxiliary positioning. The petal-shaped stamping head 81 is tubular in overall profile and made of spring steel and includes four downwardly overhanging pressing pieces in the form of petals, a hole with a size slightly larger than the small end of the one-way valve core 30 is left in the center position, and each pressing piece can expand outward against a certain elastic force. The clamping device 82 is a clip cylinder for fixing the spring seat 10 during stamping. The virtual clamping device 83 is composed of a clip with a certain elastic force, and a pair of clips are respectively hinged to the two fingers of the clamping device of the clip cylinder through torsion springs, which can automatically open against the elastic force under the action of external force, and is used for positioning the one-way valve core 30 during stamping. In the embodiment, a transition chute is provided in the middle of the pair of clips of the virtual clamping device 83 corresponding to the position of the petal-shaped stamping head 81, which facilitates the automatic opening of the virtual clamping device 83 by the petal-shaped stamping head 81 during stamping. When the station is in a non-working state, the fingers of the clip cylinder are open to avoid interference with the workpiece during rotation of the turntable; when stamping, the clip cylinder is closed when the workpiece is in position, and the clamping device 82 and the virtual clamping device 83 clamp the spring seat 10 and the one-way valve core 30 respectively, then the petal-shaped stamping head 81 moves downward, the small end of the one-way valve core 30 is inserted into the middle of the petal-shaped stamping head 81, and the petal-shaped stamping head 81 pushes the spring 40 downward after contacting the small end of the spring 40, until it is pressed into the lower part of the convex ring, and the petal-shaped stamping head 81 can expand outward adaptively after contacting the convex ring; in this process, the petal-shaped stamping head 81 automatically pushes away the transition chute of the virtual clamping device 83 when it contacts the transition chute. After stamping is completed, the petal-shaped stamping head 81, the clamping device 82 and the virtual clamping device 83 are reset.

[0061] The discharging station 9 is provided with a transition detection tool 91 and a discharging manipulator 92 for clamping the workpiece from the tool to the transition detection tool; the transition detection tool 91 is correspondingly provided with two blow pipes capable of blowing the workpiece in different directions, one is a defective product blow pipe and the other is a qualified product blow pipe, which controls the discharge of defective products and qualified products respectively; the middle of the transition detection tool 91 is provided with a bottom seat with a size larger than the size of the bottom end of the one-way valve core 30, and the side surface of the transition detection tool 91 is provided with an infrared sensor for detecting the one-way valve core 30, so as to judge whether the one-way valve core 30 falls downward, and further judge whether the spring 40 is correctly installed (if the spring is not correctly installed, the one-way valve core and the spring seat will not be limited to each other), and the detection signal is correspondingly matched with the work of different blow pipes. When any of the silica gel gasket detection station 4 and the transition detection tool 91 has an unqualified detection result, the defective product blow pipe blows the workpiece to the defective product collection area; when the detection results of the silica gel gasket detection station 4 and the transition detection tool 91 are both qualified, the qualified product blow pipe blows the workpiece to the qualified product collection area.

[0062] The sealing ring assembling machine of the embodiment is also equipped with a control system, through the connection of the control system with each sensor and the driving electrical device, the orderly implementation of the assembling steps is realized, the control system can be a programmable logic controller, the signals of each sensor are received and each cylinder or motor is controlled to work orderly, the automatic assembling is realized.

[0063] It needs to be pointed out that some empty stations are displayed in the drawings of the specification, which are used for some expansion functions and can be ignored in the embodiment.

[0064] The above embodiments are only for illustrating the technical concept and characteristics of the present application, the purpose is to enable the person skilled in the art to understand the content of the present application and to implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made according to the spirit and essence of the present application shall be covered within the protection scope of the present application.

Claims

1. An internal leakage component assembly machine, wherein the internal leakage component includes a one-way valve core and a silicone gasket, a spring seat, and a spring sequentially fitted onto the one-way valve core, wherein a convex ring for limiting the spring is provided at the relative center of the one-way valve core, and the end of the one-way valve core having a flat base is defined as the bottom end; characterized in that, The internal leakage component assembly machine includes a turntable with several tooling fixtures and spring seat loading station, silicone gasket installation station, one-way valve core installation station, flipping station, spring loading station, spring pressing station, and unloading station distributed along the outer periphery of the turntable. The turntable rotates intermittently so that the tooling fixtures correspond to the stations in sequence. The spring seat loading station, silicone gasket installation station, and one-way valve core installation station install the spring seat, silicone gasket, and one-way valve core sequentially on the tooling in the direction of bottom end upward of the one-way valve core; The flipping station is equipped with a flipping robot. After the flipping robot picks up the workpiece corresponding to the tooling, it flips it 180° so that the bottom end of the one-way valve core faces down. The spring loading station places the spring onto the one-way valve core; The spring pressing station is equipped with a petal-shaped punch head that can move up and down. The petal-shaped punch head includes multiple pressure plates that extend downward in a petal shape. Each pressure plate can expand outward against a certain elastic force.

2. The internal leakage component assembly machine according to claim 1, characterized in that, The spring seat, silicone gasket, one-way valve core, and spring are fed by a vibratory feeder.

3. The internal leakage component assembly machine according to claim 1, characterized in that, The silicone pad installation station is equipped with a silicone pad installation robot, which has an insertion rod and a material ejection frame that can move relative to the insertion rod.

4. The internal leakage component assembly machine according to claim 1, characterized in that, A silicone gasket inspection station is located behind the silicone gasket installation station, and the silicone gasket inspection station is equipped with a displacement sensor.

5. The internal leakage component assembly machine according to claim 1, characterized in that, The one-way valve core installation operation is equipped with a one-way valve core installation robot, which includes a vacuum suction rod.

6. The internal leakage component assembly machine according to claim 1, characterized in that, The flipping manipulator includes a rotary cylinder and a clamping cylinder located at the output end of the rotary cylinder. One side of the fingers of the clamping cylinder is provided with a base.

7. The internal leakage component assembly machine according to claim 6, characterized in that, The flipping station is also equipped with a top rod that can move up and down above the tooling, and the bottom end face of the top rod has a hole for inserting a one-way valve core.

8. The internal leakage component assembly machine according to claim 1, characterized in that, The spring pressing station also includes a clamping device located above the corresponding tooling for fixing the spring seat.

9. The internal leakage component assembly machine according to claim 8, characterized in that, Above the clamping device is a virtual clamping device for virtually clamping the one-way valve core, which can open after overcoming a certain elastic force under external force.

10. The internal leakage component assembly machine according to claim 1, characterized in that, The discharge station is equipped with a transition detection fixture and a discharge robot that picks up the workpiece from the fixture and places it on the transition detection table; the transition detection fixture is equipped with two blowpipes that can blow the workpiece in different directions. The transition detection fixture has a central opening with a size larger than the flat end of the one-way valve core. The side of the transition detection fixture is equipped with an infrared sensor for detecting whether the one-way valve core has fallen off, and the detection signal is assigned to the operation of different blowpipes.

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