Integrated testing device and testing method for rubber conical spring

Abstract

A rubber conical spring integration testing device comprises a mechanical arm unit, a mechanical arm clamp is connected to the mechanical arm unit, the end of the mechanical arm clamp is connected with a rod replacing tray used for obtaining different pressing rods, and a rigidity testing tool used for conducting rigidity testing on a tested piece and a clamping device used for clamping the tested piece are arranged on the periphery of the mechanical arm unit in a surrounding mode. The adhesion test tool is used for carrying out adhesion test on the tested piece; the loading and unloading device is used for conveying a tested piece to the rigidity testing tool and / or the adhesion testing tool; the defective product blanking line is used for conveying and storing defective tested pieces; and the lettering device is used for carrying out lettering identification on the tested piece after the test is completed. The integrated testing device provided by the invention integrates adhesion testing, rigidity testing and lettering stations, can automatically select proper pressing rods for testing according to different product types, and is high in adaptability. The whole test process does not need to wait for a long time, and continuous and batch integrated tests can be completed.

Description

Technical Field

[0001] The invention relates to the field of rail vehicle vibration reduction device detection, and in particular to a rubber conical spring integrated testing device and a testing method. Background Art

[0002] Metal rubber conical spring is a vibration reduction element made of rubber and metal such as outer sleeve, partition, mandrel, etc. It plays the role of bearing and attenuating vibration vertically during train operation, and transmits traction, braking load and lateral guide load. It is widely used in subway, light rail and low-floor vehicles due to its simple and convenient installation and lifelong maintenance-free characteristics. According to TB / T2843-2015 "General Technical Conditions for Rubber Elastic Elements for Locomotives and Rolling Stocks" and product technical specifications, metal rubber conical springs need to undergo bonding tests, stiffness tests and lettering during mass production. Principle: The test piece is a physical product. After the product is parked for 24 hours, the bonding test is first carried out, and then the stiffness test is carried out after the product is parked for 24 hours. After the stiffness test is completed, the lettering process is carried out. At present, the test device for conical springs has a single process and a low degree of automation. Each product needs to be customized with a dedicated inspection tool. The product bonding test, stiffness test and lettering mark require frequent handling of product switching equipment, tooling and personnel, repeated manual handling and information re-retrieval and reuse, resulting in low overall test efficiency.

[0003] Through searching, technical documents related to conical spring testing devices or testing methods have been disclosed in the prior art. For example, the invention patent publication document with the publication number "CN114264460A" and the name "A rubber shock absorber dynamic stiffness testing device and installation method" is disclosed. A rubber shock absorber dynamic stiffness testing device and installation method are disclosed. A rubber shock absorber dynamic stiffness testing device is composed of a host execution system, a control and measurement system, and a hydraulic system; the host execution system mainly provides a support carrier and load input for the shock absorber; the control system realizes the adjustment of the shock absorber load frequency, size and waveform, real-time monitoring of the working status, and load and displacement data collection, analysis and processing; the hydraulic system provides the required power source for the shock absorber dynamic stiffness test, and has an overload protection device and a safety interlocking function.

[0004] For example, the invention patent publication document with the publication number of "CN106918555A" and the name of "Auxiliary flexible tooling and method for detecting the adhesion strength of rail vehicle axle box springs" discloses an auxiliary flexible tooling for detecting the adhesion strength of rail vehicle axle box springs, including a horizontally arranged annular chassis, a support frame arranged on the chassis for supporting the axle box spring, and a position adjustment power mechanism for adjusting the position of the support frame on the chassis. The opening and closing of the position adjustment power mechanism is coordinated and controlled by an external control system. It is characterized in that the support frame is composed of at least two support arms, which are spaced apart along the same circumference line on the chassis, and the position adjustment power mechanism is connected to the support arms by transmission. The position adjustment power mechanism is started to drive several support arms to move synchronously along the radial direction of the chassis to expand or retract the support frame along the radial direction of the chassis.

[0005] For example, the utility model patent authorization announcement document with the publication number "CN207163889U" and the name "Indenter for testing the adhesion strength of axle box spring" discloses an indenter, which includes a connection mechanism fixedly connected to a pressurization test machine, an indenter assembly arranged vertically, and a manipulator changing mechanism for removing the indenter assembly from the connection mechanism or installing the indenter assembly on the connection mechanism. The indenter assembly is hung on the connection mechanism and pressurizes the axle box spring as the connection mechanism moves downward. The manipulator changing mechanism is mounted on the outer periphery of the indenter assembly.

[0006] None of the above-mentioned comparative documents proposes corresponding technical solutions for continuous and batch integrated testing of conical springs. Therefore, it is of great significance to propose a conical spring integrated testing device that can complete stiffness, adhesion, and engraving in this field. Summary of the invention

[0007] In view of the shortcomings of the prior art, the present invention provides a rubber conical spring integrated testing device, including a mechanical arm unit, a mechanical arm fixture is connected to the mechanical arm unit, and the end of the mechanical arm fixture is connected to a rod changing tray for obtaining different pressing rods. The following are arranged around the mechanical arm unit: The stiffness test fixture is used to perform stiffness test on the tested part; The adhesion test fixture is used to perform adhesion test on the test piece; Loading and unloading device, used for conveying the tested parts to the stiffness test fixture and / or the adhesion test fixture; Defective product unloading line, used to transport and store defective tested parts; The engraving device is used to engrave and mark the tested parts after the test is completed.

[0008] Furthermore, the loading and unloading device includes a stiffness test loading and unloading line and an adhesion test loading and unloading line, which are respectively arranged on one side of the stiffness test tooling and the adhesion test tooling; the engraving device is arranged on the downstream side of the stiffness test tooling.

[0009] Furthermore, the stiffness test loading and unloading lines and the adhesion test loading and unloading lines have the same structure, including a double-layer conveyor line, wherein the bottom layer is a loading line and the top layer is a unloading line; wherein the loading line is provided with a loading position, a conveying section, and a product clamping position in sequence along its conveying direction and are respectively matched with independent power units, and the product clamping position is docked with the stiffness test tooling or the adhesion test tooling.

[0010] Furthermore, the defective product unloading line is arranged between the stiffness test loading and unloading line and the adhesion test loading and unloading line, and a stamping unit is provided on the conveying line of the defective product unloading line.

[0011] Furthermore, the stiffness testing tooling includes a base, a bracket is fixedly connected to the base, and the upper surface of the base is used to place the rubber conical spring of the test piece. A liftable upper mold pressing rod unit is also provided on the bracket, and the upper mold pressing rod unit can accommodate pressing rods. A pressing rod library is also connected to the base, and multiple pressing rods are placed on the pressing rod library.

[0012] Furthermore, the adhesion testing tooling includes a base, a bracket is fixedly connected to the base, a support unit is also connected to the upper surface of the base, the support unit is connected to a support clamp for fixing a rubber conical spring, a liftable upper mold pressing rod unit is also provided on the bracket, the upper mold pressing rod unit can accommodate a pressing rod, the support unit can slide relative to the base, one end of the base is also connected to a pressing rod warehouse, a plurality of pressing rod trays are fixedly connected to the pressing rod warehouse, and each pressing rod tray can accommodate a pressing rod.

[0013] Furthermore, the support unit comprises a support base plate and a support slide plate, a cavity is provided between the support slide plate and the support base plate, and the cavity is connected to the gas injection port.

[0014] Furthermore, the upper mold pressing rod unit also includes a lifting and gap-eliminating cylinder, which is connected to the upper mold pressing block. The pressing rod bracket and the upper mold pressing block are slidably connected by a linear guide rail. The lower surface of the upper mold pressing block has a pressing rod accommodating groove. When the lifting and gap-eliminating cylinder drives the upper mold pressing block to lift into place, the upper end of the pressing rod can withdraw from the accommodating groove.

[0015] Furthermore, the manipulator clamp comprises a manipulator support, a clamping arm which can be opened and closed is slidably connected to the manipulator support, a rod changing tray is connected to the end of the clamping arm, and a circular rod changing hole with an opening is provided on the rod changing tray.

[0016] A rubber conical spring integrated testing method, using the above integrated testing device, comprises the following steps: Loading the test piece S1, the test piece is loaded through the loading and unloading device and the product information of the test piece is obtained, the height of the stiffness test tool and the adhesion test tool is adjusted according to the product information, and the type of pressing rod required by the stiffness test tool and the adhesion test tool is obtained; At the start of the test S2, after the required pressure rod is selected by the robotic arm unit, the test piece is clamped from one end of the loading and unloading device and placed in different workstations for adhesion test and stiffness test. If the test piece passes the stiffness test fixture and the adhesion test fixture, the robotic arm unit is used to clamp the test piece to the loading and unloading device for qualified product unloading; if the adhesion test or stiffness test fails, the robotic arm unit is used to clamp the test piece to the defective product unloading line for isolation unloading.

[0017] Engraving S3, in the step S2, after the stiffness test is qualified, the robot arm unit is used to clamp the tested piece to the engraving device for engraving.

[0018] Compared with the prior art, the technical solution of this application has the following beneficial effects: The integrated testing device proposed in the present invention integrates adhesion testing, stiffness testing, and lettering stations, and can automatically select a suitable pressing rod for testing according to different product types, and has strong adaptability.

[0019] By utilizing loading and unloading lines and unqualified unloading lines in conjunction with various testing stations and combining them with the design of the production line rhythm, the entire testing process does not require long waiting times and can complete continuous, batch integrated testing.

[0020] Automatic data collection, analysis, and judgment, interactive sharing with MES / SAP systems, to achieve information-based reporting and traceability. Automatic alarm for unqualified products is achieved through isolation of unqualified unloading lines, to achieve multiple error prevention such as mixing, duplication, and missing processes. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 : A brief schematic diagram of the overall layout of the integrated test device; Figure 2 : Schematic diagram of the structure of the manipulator fixture; Figure 3 : Schematic diagram of the rod changing tray structure; Figure 4 : Structural diagram of loading and unloading device; Figure 5 : Schematic diagram of the structure of the defective product unloading line; Figure 6 : Schematic diagram of stiffness test fixture; Figure 7 :Adhesion test tooling diagram Figure 1 ; Figure 8 :Adhesion test tooling diagram Figure 2 ; Fig. 9 : Schematic diagram of the upper molded rod unit structure; Fig.10 : Schematic diagram of the rod pressing library structure; Fig.11: Schematic diagram of the pressure rod structure. DETAILED DESCRIPTION

[0022] 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.

[0023] A rubber conical spring integrated testing device includes a robotic arm unit 2, to which a robotic arm fixture 21 is connected, and the end of the robotic arm fixture 21 is connected to a rod changing tray 213 for obtaining different pressing rods 13. Surrounding the robotic arm unit 2 are arranged: a stiffness test tool 1 for performing a stiffness test on a test piece; an adhesion test tool 3 for performing an adhesion test on a test piece; a loading and unloading device 4 for conveying the test piece to the stiffness test tool 1 and / or the adhesion test tool 3; a defective product unloading line 5 for conveying and storing defective test pieces; and an engraving device 6 for engraving and marking the test piece that has completed the test.

[0024] like Figure 1 As shown. In this embodiment, the various test stations and loading and unloading lines are arranged in a ring around the robot arm unit, so that the test piece can be loaded and unloaded between the various test stations after being clamped by the robot clamp 21. In this embodiment, there can be multiple loading and unloading devices 4, which are respectively adjacent to the corresponding test stations, and the defective product unloading line 5 is arranged in the center relative to the entire layout. The stiffness test fixture 1 and the adhesion test fixture 3 can also be arranged in multiples, and are symmetrically arranged with the defective product unloading line 5. The loading and unloading device 4 includes a stiffness test loading and unloading line 41 and an adhesion test loading and unloading line 42, which are respectively arranged on one side of the stiffness test fixture 1 and the adhesion test fixture 3; the engraving device 6 is arranged on the downstream side of the stiffness test fixture 1. Such an arrangement can facilitate the robot clamp 21 to clamp the test piece and circulate it at a smaller displacement distance.

[0025] like Figure 2 As shown, the manipulator clamp 21 includes a manipulator support 211, on which a clamping arm 212 that can be opened and closed is slidably connected, and a rod changing tray 213 is connected to the end of the clamping arm 212, and the rod changing tray 213 is provided with an open rod changing circular hole 214.

[0026] In this embodiment, a bidirectional ball screw 217 is installed in the manipulator support 211, a heavy-duty linear guide 218 is connected to the bidirectional ball screw 217, and the clamping arm 212 is connected to the heavy-duty linear guide 218. The bidirectional ball screw 217 is used as a transmission device to drive the clamping arm 212 to open and close. A V-shaped clamping claw 219 is also connected to the inner side of the tip of the clamping arm 212, and an anti-slip pad is connected to the V-shaped clamping claw 219. The V-shaped clamping claw 219 can adapt to the holding of the measured parts with different outer diameters. A magnetic grid electronic ruler 2120 is also provided on the manipulator support 211, which can be used to feedback the opening and closing distance of the clamping arm 212. The middle part of the clamping arm 212 has an air avoidance recess 2121 to prevent the clamping arm 212 from interfering with the base 11 when loading and unloading the measured parts. The rod changing tray 213 at the end of the clamping arm 212 can accommodate the pressing rod 13 that needs to be replaced. The pressing rod 13 that needs to be replaced can be sent into the upper mold pressing rod unit 16 using the rod changing tray 213, and the pressing rod 13 that needs to be replaced can also be taken out from the upper mold pressing rod unit 16.

[0027] like Figure 3 As shown. In a more preferred embodiment, the opening of the rod-changing circular hole 214 has an entry angle 215, and a lifting step 216 is provided on the inner side of the rod-changing circular hole 214. The entry angle 215 makes the opening of the rod-changing circular hole 214 not straight, so that the pressure rod 13 can be guided when entering the rod-changing circular hole 214. The lifting step 216 can cooperate with the step surface on the outer peripheral side of the pressure rod 13 to lift the pressure rod 13. The upper surface of the rod-changing circular hole 214 has a chamfer, so that the pressure rod 13 has a certain guidance when being lifted in the rod-changing circular hole 214 and maintains a vertical state.

[0028] like Figure 4 As shown, the loading and unloading line 41 for stiffness test and the loading and unloading line 42 for adhesion test have the same structure, both of which are line structures. The buffer capacity of 6 products can be accommodated, so that the operator can continuously load 6 products at one time, and the action is continuous and without waiting. Specifically, it includes a double-layer conveyor line, in which the bottom layer is the loading line 43 and the top layer is the unloading line 44; wherein the loading line 43 is provided with a loading position 45, a conveying section 46, and a product clamping position 47 in sequence along its conveying direction and matched with independent power units respectively, so that the corresponding positions on the tested piece can stay and independently convey and move. The product clamping position 47 is docked with the stiffness test fixture 1 or the adhesion test fixture 3. The loading position 45 is docked with the line body by a loading car, and the operator manually pushes out the product, and the first section of power relay assists in loading. The second and third sections of the loading line 43 are relayed to move the product into the product clamping position 47; after the clamping position sensor detects that the product is in place and the product is properly stabilized for a delay, the industrial camera is triggered to take pictures with the assistance of the camera light source to highlight the outer edge characteristics of the product.

[0029] In a more preferred embodiment, Figure 5As shown. The defective product unloading line 5 is arranged between the stiffness test loading and unloading line 41 and the adhesion test loading and unloading line 42, and a stamping unit 51 is provided on the conveying line of the defective product unloading line 5. When a defective product is detected at the stiffness or adhesion test position, the system host will receive the defective product feedback information and send an unloading instruction to the robot. The robot arm unit 2 clamps the defective product and places it on the defective product unloading line. The defective product unloading line 41 drives different cylinders according to the system host instruction and marks the product with different stamps.

[0030] like Figure 6 As shown, in a more preferred embodiment. The stiffness test fixture 1 includes a base 11, a bracket 12 is fixedly connected to the base 11, and the upper surface of the base 11 is used to place the rubber conical spring of the test piece. A liftable upper mold pressing rod unit 16 is also provided on the bracket 11, and the upper mold pressing rod unit 16 can accommodate a pressing rod 13. A pressing rod warehouse 17 is also connected to the base 11, and a plurality of pressing rods 13 are placed on the pressing rod warehouse 17. When the system obtains the type of the required pressing rod 13 according to the information of the test piece, the corresponding pressing rod 13 is obtained by using the rod changing tray 213 at the end of the clamping arm 212 on the manipulator clamp 21.

[0031] like Figure 7 , Figure 8 As shown, in a more preferred embodiment. The adhesion test fixture 3 includes a base 11, a bracket 12 is fixedly connected to the base 11, a support unit 15 is also connected to the upper surface of the base 11, the support unit 15 is connected to a support fixture 14 for fixing a rubber conical spring, and a liftable upper mold pressing rod unit 16 is also provided on the bracket 11, the upper mold pressing rod unit 16 can accommodate a pressing rod 13, the support unit 15 can slide relative to the base 11, and one end of the base 11 is also connected to a pressing rod warehouse 17, and a plurality of pressing rod trays 171 are fixedly connected to the pressing rod warehouse 17, and each pressing rod tray 171 can accommodate a pressing rod 13.

[0032] In this embodiment, the bracket 12 is a gate-type bracket, and the upper mold pressing rod unit 16 is connected to the crossbeam of the gate-type bracket. The upper mold pressing rod unit 16 can move up and down with the crossbeam, so that after the test piece is in place, the pressure rod 13 can be used to provide downward pressure on the core shaft of the test piece. After completing the adhesion test of a single test piece, the upper mold pressing rod unit 16 can move up with the crossbeam. After completing the test, the support unit 15 can be driven to slide relative to the base 11 and leave the gate-type bracket. At this time, the manipulator in the test production line can be controlled to remove the test piece and clamp the next round of test pieces to be tested. The support unit 15 is randomly driven to slide relative to the base 11 to start the adhesion test of the next test piece.

[0033] In a more preferred embodiment, the support unit 15 includes a support base plate 151 and a support slide plate 152, and a cavity is provided between the support slide plate 152 and the support base plate 151, and the cavity is connected to the air injection port 153. The sliding connection between the support unit 15 and the base 11 can adopt many structures in the prior art, such as the common guide rail and slide groove matching structure. However, due to the large deadweight of the support fixture 14 and the test piece, the sliding resistance of the conventional sliding connection structure will be large, and the wear and tear of long-term use will be large, and frequent replacement and maintenance are required. In this embodiment, when it is necessary to drive the support base plate 151 and the support slide plate 152 to slide relative to each other, compressed air can be injected from the air injection port 153 into the cavity between the support base plate 151 and the support slide plate 152, so that the support slide plate 152 can be suspended above the support base plate 151, thereby reducing the friction between the two when sliding, and conveniently and quickly sliding the test piece out after the test is completed.

[0034] like Fig. 9 As shown. In a more preferred embodiment, the upper mold pressing rod unit 16 includes a pressing rod bracket 162, and a pressing rod inlet 161 is provided on the pressing rod bracket 162, and the pressing rod inlet 161 is an open structure. The opening design of the pressing rod bracket 162 is to facilitate the replacement of the pressing rod 13. Since conical springs of different models and sizes require pressing rods 13 of different outer diameters to contact their core shafts to provide downward pressure, it is necessary to match the corresponding pressing rods 13 according to the conical springs in the test production line. When the pressing rod 13 needs to be replaced, the pressing rod 13 can be replaced and disassembled from the pressing rod inlet 161 provided on the pressing rod bracket 162. In this embodiment, the pressing rod inlet 161 is an open circular hole that can accommodate and support the pressing rod 13.

[0035] In a more preferred embodiment, the upper mold pressing rod unit 16 also includes a lifting and eliminating backlash cylinder 163, the lifting and eliminating backlash cylinder 163 is connected to the upper mold pressing block 164, the pressing rod bracket 162 and the upper mold pressing block 164 are slidably connected by a linear guide rail, and the lower surface of the upper mold pressing block 164 has a receiving groove 165 for the pressing rod 13. When the lifting and eliminating backlash cylinder 163 drives the upper mold pressing block 164 to be lifted into place, the upper end of the pressing rod 13 can be withdrawn from the receiving groove 165. In the aforementioned embodiment, after the pressing rod bracket 162 accommodates the pressing rod 13, when providing downward pressure, the support strength of the pressing rod 13 is insufficient, and it is difficult to maintain the vertical state of the pressing rod 13 each time it is pressed down. In order to further optimize and solve this technical problem, the upper mold pressing block 164 is also connected to the pressing rod bracket 162. The pressing rod bracket 162 is a frame structure with an opening at the top in this embodiment, and the inner side is connected to the upper mold pressing block 164 through a linear guide rail. The upper mold pressing block 164 can be moved vertically up and down in the pressure rod bracket 162 through a linear guide under the drive of the lifting and gap elimination cylinder 163. When the pressure rod 13 is placed in the pressure rod inlet 161, the upper mold pressing block 164 is in a lifted state under the drive of the lifting and gap elimination cylinder 163, and the pressure rod 13 will maintain a relatively vertical state under the action of its own gravity. At this time, the lifting and gap elimination cylinder 163 can be driven to drive the upper mold pressing block 164 to descend, so that the top of the pressure rod 13 enters the receiving groove 165. At this time, the pressure rod 13 maintains a stable vertical state under the coordinated action of the receiving groove 165 and the pressure rod inlet 161. When the upper mold pressing rod unit 16 descends with the crossbeam to provide downward pressure for the test piece, the vertical state can also be maintained, thereby ensuring the accuracy of the pressure application direction during the test. When the test is completed, if the pressure rod 13 needs to be replaced, the lifting and gap-eliminating cylinder 163 can be driven again to drive the upper mold block 164 to rise, so that the pressure rod 13 can be withdrawn from the accommodating groove 165, and the pressure rod 13 can be replaced and loaded and unloaded later through the pressure rod entrance 161.

[0036] In a more preferred embodiment, the receiving groove 165 is connected to the outside through the exhaust groove 166. In the above embodiment, the receiving groove 165 and the pressure rod 13 will frequently move vertically relative to each other, and the inner diameter of the receiving groove 165 should also be matched with the small gap between the outer diameter of the top of the pressure rod 13, so it is difficult to avoid the piston phenomenon, resulting in the upper mold block 164 being blocked from descending due to the air pressure between the receiving groove 165 and the pressure rod 13 during the descending process. The receiving groove 165 is connected to the outside through the exhaust groove 166 so that the air pressure inside and outside the receiving groove 165 is consistent, avoiding the piston phenomenon.

[0037] like Figure 6 , Figure 7 , Fig.10 , Fig.11As shown, a pressure bar warehouse 17 is connected to the base 11 of both the adhesion test fixture and the stiffness test fixture. A plurality of pressure bar trays 171 are fixedly connected to the pressure bar warehouse 17, and each pressure bar tray 171 can accommodate a pressure bar 13. As can be seen in the aforementioned embodiment, different pressure bars 13 need to be replaced and matched for different test pieces during the test process. Therefore, a pressure bar warehouse 17 is also connected to one end of the base 11. Pressure bars 13 of different models are placed in the pressure bar tray 171, and they can be distinguished by different colors, so that the components for replacing the pressure bars 13 can automatically identify the corresponding pressure bars 13 by visual means.

[0038] In a more preferred embodiment, the pressing rod tray 171 is provided with an open circular hole 172, and an inner ring step 173 is provided in the open circular hole 172. In this embodiment, the open circular hole 172 of the pressing rod tray 171 and the pressing rod entrance 161 adopt a similar design, both of which are open circular holes and have annular steps inside, so as to support and fix the pressing rod 13.

[0039] In a more preferred embodiment, the top of the press rod 13 is an upper die positioning section, and the outer periphery of the upper die positioning section is connected to a lifting ring 131, and the lower part of the upper die positioning section is a rod changing positioning section, and the outer periphery of the rod changing positioning section is connected to a lifting ring 2 132. In order to facilitate the replacement and loading and unloading in a translational manner, the press rod 13 is designed with a double ring on its outer periphery. Among them, the lifting ring 131 can contact with the press rod entrance 161, and the lifting ring 2 132 can contact with the external fixture for clamping and replacing the press rod 13. The external fixture is also a circular hole structure with an opening. When the press rod 13 needs to be replaced, the external fixture can be contacted with the lifting ring 131 and the press rod 13 can be slightly lifted. Then, the friction between the lifting ring 131 and the deadweight of the press rod 13 is used to take the press rod 13 out of the press rod entrance 161. The placement of the press rod 13 from the open circular hole 172 of the press rod tray 171 is similar to the above.

[0040] In a more preferred embodiment, the lower part of the rod replacement positioning section is an identification section, and the identification section and the rod pressing tray 171 are painted with the same color. As can be seen in the above embodiment, the pressing rod 13 can be marked with different colors to facilitate error prevention and identification. In this embodiment, the identification section and the rod pressing tray 171 are painted with the same color, which can facilitate identification of whether the correct pressing rod 13 is placed in the corresponding rod pressing tray 171.

[0041] In a more preferred embodiment, the top of the upper die positioning section has a guide angle 133, and the lower part of the identification section is a crimping head 134, and the outer diameter of the crimping head 134 is smaller than the outer diameters of the upper die positioning section, the rod changing positioning section, and the identification section. The guide angle 133 plays a role in guiding and centering the pressing rod 13 when it enters the receiving groove 165. The crimping head 134 has a different outer diameter from the pressing rod 13.

[0042] This embodiment also provides a rubber conical spring integrated testing method, using the above integrated testing device, including the following steps: Loading of the tested piece S1, the tested piece is loaded through the loading and unloading device 4 and the product information of the tested piece is obtained, the height of the stiffness test tool 1 and the adhesion test tool 3 are adjusted according to the product information, and the type of the pressing rod 13 required by the stiffness test tool 1 and the adhesion test tool 3 is obtained; The test starts S2. After the required pressure rod 13 is selected by the robot arm unit 2, the test piece is clamped from one end of the loading and unloading device 4 and placed in different workstations for adhesion test and stiffness test. If the test piece passes the stiffness test fixture 1 and the adhesion test fixture 3, the robot arm unit 2 is used to clamp the test piece to the loading and unloading device 4 for qualified product unloading; if the adhesion test or the stiffness test fails, the robot arm unit 2 is used to clamp the test piece to the defective product unloading line 5 for isolation and unloading.

[0043] Engraving S3, in the step S2, after the stiffness test is qualified, the robot arm unit 2 is used to clamp the tested piece to the engraving device 6 for engraving.

[0044] In this embodiment, the specific test process method is as follows: 1. Place the conical spring to be tested on the loading line, scan the QR code of the product, and automatically grab the product information product number, product height, outer diameter, start time, and test procedure from the MES system. The testing machine automatically adjusts the height required for the product test, and the adhesion test automatically adjusts the size of the support tooling and the type of the pressure rod; 2. Continue to push the products on the loading line. When 6 products are loaded, press the "Automatic Run" button on the master control software interface; 3. The product automatically moves to the position on the conveyor line to be clamped. The industrial camera above automatically takes pictures to obtain product position information. The manipulator automatically compensates for the offset value and corrects the clamping position. At the same time, the outer diameter of the product can be calculated from the outer edge of the product image obtained by machine vision to confirm whether the product is put on line correctly; 4. The robot automatically grabs the product and places it in different stations for bonding test and stiffness test; 5. The robot arm directly grabs the qualified products of the adhesion test and places them on the upper layer of the adhesion test unloading line; 6. The robot arm directly grabs the unqualified products in the bonding test and places them on the isolation line of the defective product unloading line; 7. The robot automatically grabs the qualified products of the stiffness test and puts them into the engraving machine for automatic engraving; 8. The manipulator of products with unqualified rigidity directly grabs the products and places them on the isolation line of defective product unloading line; 9. After the engraving is completed, the robot automatically grabs and places it on the upper and lower lines of the stiffness test loading and unloading lines; 10. After the test is completed, the original data of the test curve and the test results are automatically saved to the server and MES system to facilitate subsequent data query and analysis; 11. If the performance is unqualified, the system will automatically determine, output the unqualified barcode, place it in the defective area, and automatically store the test results in the MES system.

[0045] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0046] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rubber conical spring integrated test device, characterized in that: The invention comprises a mechanical arm unit (2), the mechanical arm unit is connected to a mechanical arm fixture (21), the end of the mechanical arm fixture (21) is connected to a rod changing tray (213) for obtaining different pressing rods (13), and the following are arranged around the mechanical arm unit (2): The stiffness test tool (1) is used to perform a stiffness test on a test piece; The adhesion test tool (3) is used to perform adhesion test on the test piece; A loading and unloading device (4) for conveying a test piece to the stiffness test fixture (1) and / or the adhesion test fixture (3); Defective product unloading line (5), used for conveying and storing defective tested parts; The engraving device (6) is used to engrave and mark the tested piece after the test is completed.

2. The rubber conical spring integrated test device according to claim 1, characterized in that: The loading and unloading device (4) comprises a stiffness test loading and unloading line (41) and an adhesion test loading and unloading line (42), which are arranged on one side of the stiffness test fixture (1) and the adhesion test fixture (3), respectively; the engraving device (6) is arranged on the downstream side of the stiffness test fixture (1).

3. The rubber conical spring integrated test device according to claim 2, characterized in that: The stiffness test loading and unloading line (41) and the adhesion test loading and unloading line (42) have the same structure, including a double-layer conveyor line, wherein the bottom layer is a loading line (43) and the top layer is a unloading line (44); wherein the loading line (43) is provided with a loading position (45), a conveying section (46), and a product clamping position (47) in sequence along its conveying direction and are respectively matched with independent power units, and the product clamping position (47) is docked with the stiffness test tooling (1) or the adhesion test tooling (3).

4. The rubber conical spring integrated test device according to claim 3, characterized in that: The defective product unloading line (5) is arranged between the rigidity test loading and unloading line (41) and the adhesion test loading and unloading line (42), and a stamping unit (51) is provided on the conveying line of the defective product unloading line (5).

5. The rubber conical spring integrated test device according to claim 4, characterized in that: The stiffness testing tool (1) comprises a base (11), a bracket (12) is fixedly connected to the base (11), the upper surface of the base (11) is used to place a rubber conical spring of a test piece, a liftable upper mold pressing rod unit (16) is also provided on the bracket (11), the upper mold pressing rod unit (16) can accommodate a pressing rod (13), and a pressing rod storage (17) is also connected to the base (11), and a plurality of pressing rods (13) are placed on the pressing rod storage (17).

6. The rubber conical spring integrated test device according to claim 5, characterized in that: The adhesion test fixture (3) comprises a base (11), a bracket (12) is fixedly connected to the base (11), a support unit (15) is also connected to the upper surface of the base (11), the support unit (15) is connected to a support fixture (14) for fixing a rubber conical spring, a liftable upper mold pressing rod unit (16) is also provided on the bracket (11), the upper mold pressing rod unit (16) can accommodate a pressing rod (13), the support unit (15) can slide relative to the base (11), one end of the base (11) is also connected to a pressing rod storage (17), a plurality of pressing rod trays (171) are fixedly connected to the pressing rod storage (17), and each pressing rod tray (171) can accommodate a pressing rod (13).

7. The rubber conical spring integrated test device according to claim 5, characterized in that: The support unit (15) comprises a support base plate (151) and a support slide plate (152); a cavity is provided between the support slide plate (152) and the support base plate (151); the cavity is connected to the gas injection port (153).

8. The rubber conical spring integrated test device according to claim 7, characterized in that: The upper mold pressing rod unit (16) further comprises a lifting and gap eliminating cylinder (163), wherein the lifting and gap eliminating cylinder (163) is connected to the upper mold pressing block (164), wherein the pressing rod bracket (162) and the upper mold pressing block (164) are slidably connected via a linear guide rail, and a receiving groove (165) for the pressing rod (13) is provided on the lower surface of the upper mold pressing block (164), and when the lifting and gap eliminating cylinder (163) drives the upper mold pressing block (164) to be lifted into place, the upper end of the pressing rod (13) can be withdrawn from the receiving groove (165).

9. The rubber conical spring integrated test device according to claim 8, characterized in that: The manipulator clamp (21) comprises a manipulator support (211), to which an openable and closable clamping arm (212) is slidably connected, a rod-changing tray (213) is connected at the end of the clamping arm (212), and a rod-changing circular hole (214) having an opening is provided on the rod-changing tray (213).

10. A rubber conical spring integrated testing method, characterized in that: The integrated test device according to any one of claims 1 to 9 comprises the following steps: Loading the test piece S1, the test piece is loaded through the loading and unloading device (4) and the product information of the test piece is obtained, the height of the stiffness test tool (1) and the adhesion test tool (3) are adjusted according to the product information, and the type of the pressing rod (13) required by the stiffness test tool (1) and the adhesion test tool (3) is obtained; The test starts S2. After the required pressing rod (13) is selected by the robot arm unit (2), the tested piece is clamped from one end of the loading and unloading device (4) and placed in different workstations for adhesion test and stiffness test. If the tested piece passes the stiffness test tool (1) and the adhesion test tool (3), the robot arm unit (2) is used to clamp the tested piece to the loading and unloading device (4) for qualified product unloading. If the adhesion test or stiffness test fails, the robot arm unit (2) is used to clamp the tested piece to the defective product unloading line (5) for isolation unloading. Engraving S3: In step S2, after the stiffness test is passed, the mechanical arm unit (2) is used to clamp the tested piece to the engraving device (6) for engraving.

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