Testing device for nozzle and firing pin of high-speed dispensing valve

Abstract

The utility model provides a testing device for a nozzle and a firing pin of a high-speed dispensing valve, and the device achieves the high-frequency vibration of the nozzle through a piezoelectric ceramic impact module, and further controls the vibration frequency and amplitude of the fatigue impact of the nozzle and the firing pin. The size and the direction of a force value in the fatigue impact process are monitored on line in real time based on a dynamometer, and if the force value is suddenly and violently increased or decreased in the testing process, the nozzle and the firing pin start to be subjected to fatigue wear; according to the magnitude and directivity of the force value, combined with artificial intelligence deep learning big data of a computer, intelligent prediction of the fatigue performance and the wear life of the nozzle and the firing pin is realized, meanwhile, model selection optimization of different materials and structures of the nozzle and the firing pin can be carried out according to a fatigue test result and wear feature analysis, cost reduction and efficiency improvement of a product are facilitated, and the product quality is improved. And the service performance and the service life of the high-speed dispensing valve are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a nozzle and plunger of high -speed point glue valve's testing arrangement. BACKGROUND

[0002] The high -speed point glue machine can be used in the liquid such as glue in the product technology in new energy, 3C electron, semiconductor etc. field and is coated to corresponding accurate position accurately. And the glue outlet of high -speed point glue machine is controlled by nozzle and plunger, the glue outlet is set on the nozzle, and the opening or closing of glue outlet is controlled by plunger to realize glue outlet and stop glue outlet. Specifically, when the glue outlet is needed, the plunger is away from the nozzle under the action of external force to open the glue outlet, and the glue outlet is realized. When the glue outlet is needed, the plunger is removed under the action of elastic piece and is impacted to the nozzle to close the glue outlet, and the glue outlet is stopped. Therefore, when the high -speed point glue machine is operated, the plunger will frequently impact the nozzle, which leads to the nozzle and plunger in the high -speed point glue valve to have the defects such as easy wear and tear and low service life, especially in the viscous glue environment, the glue valve is caused due to wear and tear, fatigue failure, and thus leads to problems such as dripping, unstable glue outlet, frequent replacement of core components in the valve, and high use cost.

[0003] And the detection device of the plunger and nozzle at present, for example, the utility model patent with application No. 202311564643.4 discloses a plunger nozzle quality detection device and detection method, which is used for detecting the plunger and nozzle, but it can only detect some defects on the structure of the plunger and nozzle, including hole diameter, burr and concentricity. It cannot detect the fatigue performance and wear life of the plunger and nozzle, cannot simulate the actual working condition of the high -speed point glue valve, and cannot real -time online monitor and evaluate the fatigue performance and wear life of the plunger and nozzle. UTILITY MODEL CONTENTS

[0004] Therefore, the utility model aims at providing a testing device for the nozzle and plunger of high -speed point glue valve to solve the above -mentioned problems.

[0005] The utility model adopts the following scheme:

[0006] The utility model provides a testing device for the nozzle and plunger of high -speed point glue valve, which comprises a base, a first clamping table and a second clamping table are movably arranged on the base, a first clamp for fixing the plunger is arranged on the first clamping table, a second clamp is arranged on the second clamping table, a piezoelectric ceramic impact module is fixedly arranged on the second clamp, and a force meter capable of fixing the nozzle is arranged at the output end of the piezoelectric ceramic impact module.

[0007] The first clamping table and the second clamping table are adjusted to make the firing pin and the nozzle approach or move away from each other on the same axis and to make the nozzle and the firing pin in a critical contact state; the piezoelectric ceramic impact module is used to realize high-frequency vibration of the nozzle to impact the firing pin; and the force gauge is used to measure the vector force information of the nozzle and feed back to a computer for analysis and processing.

[0008] Further, the piezoelectric ceramic impact module comprises a piezoelectric ceramic actuator, a controller for controlling the piezoelectric ceramic actuator, and a signal generator electrically connected with the controller.

[0009] Further, an end surface of the nozzle away from the firing pin is adhesively connected with a side plane port of the force gauge.

[0010] Further, the first clamp is provided with a through hole for mounting the firing pin, and a limiting piece is arranged along the radial direction of the through hole to fix the firing pin.

[0011] Further, the critical contact state is that the contact normal force measured by the force gauge is about 0.1-1N.

[0012] Further, the base is provided with a first drive for driving the first clamp to move along the Y direction; the second clamping table is provided with a second drive and a third drive for driving the second clamp to move along the X direction and the Z direction, respectively.

[0013] Further, the base is provided with a double-rail sliding platform comprising two linear guides; and the first clamping table is slidably arranged on the linear guides.

[0014] By adopting the above technical scheme, the following technical effects can be achieved:

[0015] The testing device for the nozzle and the firing pin of the high-speed dispensing valve can realize high-frequency vibration of the nozzle through the piezoelectric ceramic impact module, and then control the vibration frequency and amplitude of the fatigue impact of the nozzle and the firing pin; the force value and direction in the fatigue impact process can be monitored in real time and on line based on the force gauge, if the force value suddenly and sharply rises or falls in the testing process, it indicates that the nozzle and the firing pin start to fatigue and wear; then, the fatigue performance and wear life of the nozzle and the firing pin can be intelligently predicted according to the force value and direction, combined with the artificial intelligence deep learning big data of the computer, the selection and optimization of different materials and structures of the nozzle and the firing pin can be performed according to the fatigue test results and wear characteristic analysis, which is helpful to reduce the cost and increase the efficiency of the product, and improve the service performance and service life of the high-speed dispensing valve. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the following drawings only show some of the embodiments of the present application, and therefore should not be considered as limiting the scope. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0017] Figure 1 is a schematic structural diagram of a test device for a nozzle and a striker of a high-speed dispensing valve according to an embodiment of the present application;

[0018] Figure 2 is a schematic structural diagram of a front view of a test device for a nozzle and a striker of a high-speed dispensing valve according to an embodiment of the present application;

[0019] Figure 3 is a schematic structural diagram of a partial enlarged view of a test device for a nozzle and a striker of a high-speed dispensing valve according to an embodiment of the present application;

[0020] Figure 4 is a schematic structural diagram of a striker according to an embodiment of the present application;

[0021] Figure 5 is a schematic structural diagram of a front view and a cross-sectional view of a nozzle according to an embodiment of the present application;

[0022] Figure: base 1, first clamping table 2, second clamping table 3, first clamp 4, second clamp 5, striker 6, piezoelectric ceramic impact module 7, nozzle 8, force gauge 9, groove 10, glue outlet hole 11, double guide rail sliding platform 12, linear guide rail 13. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only to represent selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0024] EMBODIMENT

[0025] In combination withFigures 1 to 3 As shown, the embodiment provides a testing device for the nozzle and the plunger of the high-speed dispensing valve, which comprises a base 1, a first clamping table 2 and a second clamping table 3 movably arranged on the base 1; the first clamping table 2 is provided with a first clamp 4 for fixing the plunger 6; the second clamping table 3 is provided with a second clamp 5, and a piezoelectric ceramic impact module 7 is fixed on the second clamp 5, and the output end of the piezoelectric ceramic impact module 7 is provided with a force meter 9 capable of fixing the nozzle 8.

[0026] The adjustment of the first clamping table 2 and the second clamping table 3 can make the plunger 6 and the nozzle 8 approach or move away from each other on the same axis, and can make the nozzle 8 and the plunger 6 in a critical contact state (the normal contact force measured by the force meter 9 is about 0.1N); the piezoelectric ceramic impact module 7 is used to realize the high-frequency vibration of the nozzle 8 to impact the plunger 6; the force meter 9 is used to measure the vector force information of the nozzle 8 and feedback to the computer for analysis and processing.

[0027] Specifically, in the embodiment, as shown in Figure 4 and Figure 5 The plunger 6 is a long cylindrical shape as a whole, and the end thereof for impact cooperation with the nozzle 8 is a hemispherical shape. The nozzle 8 is a convex shape as a whole, and the end thereof for impact cooperation with the plunger 6 is provided with a groove 10, and the bottom of the groove 10 is provided with a glue outlet hole 11. After the hemispherical end of the plunger 6 impacts on the groove 10, the glue outlet hole 11 is closed; and when the hemispherical end of the plunger 6 moves away from the groove 10, the glue outlet hole 11 is opened.

[0028] In the embodiment, the base 1 is provided with a double-rail sliding platform 12, which comprises two linear guides 13; the first clamping table 2 is slidably arranged on the linear guides 13; the double-rail sliding platform 12 is provided with a first drive for driving the first clamping table 2 to move along the Y direction. The first clamp 4 is fixed on the first clamping table 2, which is provided with a through hole for installing the plunger 6, and a limiting piece is arranged along the radial direction of the through hole for fixing the plunger 6.

[0029] The second clamping table 3 is provided with a second drive and a third drive, respectively used to drive the second clamp 5 to move along the X direction and the Z direction. The piezoelectric ceramic impact module 7 is fixed on the second clamp 5. In the embodiment, the piezoelectric ceramic impact module 7 includes a piezoelectric ceramic actuator, a controller for controlling the piezoelectric ceramic actuator, and a signal generator electrically connected with the controller. Of course, the controller is also electrically connected with a closed-loop control circuit and an amplifier circuit. The performance parameters of the piezoelectric ceramic impact module 7 include: a closed-loop stroke of 60 μm, a closed-loop resolution of 1.2 nm, a thrust size of 800 N, a tension size of 300 N, a capacitance size of 6.0 μF, a dynamic working current coefficient of 12.5 μA / (Hz·μm), and a resonance frequency of 8.5 kHz (the maximum resonance frequency of the ceramic under external driving). The piezoelectric ceramic actuator generates an electrical signal through the signal generator and converts electrical energy into mechanical energy to provide high-frequency vibration for the nozzle 8. By modulating sinusoidal signals of different frequencies and different amplitudes, the vibration frequency and amplitude of the fatigue impact of the nozzle 8 and the striker 6 can be controlled.

[0030] The output end of the actuator is connected with the threaded port of the force gauge 9 through a threaded port. The end face of the nozzle 8 away from the striker 6 is adhesively connected with one side of the force gauge 9. The force gauge 9 measures high dynamic force based on the piezoelectric sensor principle, and the measurement range is -2-2 kN. The inherent frequency is as high as 27 kHz, and the vector force data when the nozzle 8 and the striker 6 impact each other can be measured in real time. That is, the size and direction of the force value in the fatigue impact process are monitored in real time and online, and are transmitted to the computer for analysis.

[0031] The vector force information fed back through computer analysis is used to adjust the contact pose of the nozzle 8 and the striker 6 in real time, so that only normal contact force exists and no tangential force exists. If the tangential force measured by the force gauge 9 is lower than 0.1 N, it indicates that the center lines of the nozzle 8 and the striker 6 are located on the same straight line. The actual working condition is accurately simulated, and the force value change is monitored and analyzed in real time. If the force value suddenly rises or falls during the test, it indicates that the nozzle 8 and / or the striker 6 starts to fatigue and wear.

[0032] In the embodiment, after the striker 6 and the nozzle 8 are fixed on the first clamp 4 and the force gauge 9, the center lines thereof are adjusted to be on the same axis, and the striker 6 and the nozzle 8 are in a critical contact state (the normal contact force measured by the force gauge 9 is about 0.1-1 N). Then, the brake is started to realize high-frequency vibration of the nozzle 8, so that the nozzle 8 impacts the striker 6. Then, the vector force data when the nozzle 8 and the striker 6 impact each other are measured in real time by the force gauge 9 and are transmitted to the computer for analysis.

[0033] In the embodiment, the first drive, the second drive and the third drive are driven by linear motors. The performance parameters of the linear motors are: rated thrust 40 N, peak thrust 120 N, rated current 2.5 A, peak current duration less than 1 s; system resolution 0.05 μm; effective stroke 160 mm; which can ensure that the repeat positioning accuracy of the piezoelectric ceramic impact module 7 in the Y direction reaches 1 μm. The repeat positioning accuracy of the objective table in the X direction should be better than 5 μm, and the repeat positioning accuracy in the Z direction should be better than 5 μm.

[0034] The following specifically describes the steps of testing the striker 6 and the nozzle 8 by using the test device, which specifically includes the following steps:

[0035] The striker 6 and the nozzle 8 are respectively fixed on the first clamp 4 and the second clamp 5;

[0036] According to the position of the striker 6, the position of the second clamp 5 is adjusted in the X direction and the Z direction by the second drive and the third drive, so that the center lines of the striker 6 and the nozzle 8 are on the same axis; and the first clamp 4 is adjusted in the Y direction by the first drive, so that the striker 6 and the nozzle 8 are in a critical contact state (the critical contact state is that the contact normal force measured by the force gauge 9 is about 0.1-1 N);

[0037] Then the piezoelectric ceramic impact module 7 is started to drive the nozzle 8 to vibrate at high frequency, so as to simulate the fatigue impact process of the nozzle 8 and the striker 6 in the high-speed glue dispensing machine valve; wherein the frequency and amplitude of the modulated sinusoidal signal are adjusted to realize the high-frequency vibration of the piezoelectric ceramic impact module 7 driving the nozzle 8, and then simulate the fatigue impact process of the nozzle 8 and the striker 6 in the high-speed glue dispensing machine valve under different frequency, impact force and other working conditions;

[0038] The force gauge 9 monitors the size and direction of the force value in real time and on line during the fatigue impact process, and transmits the signal to the computer for processing and analysis; and the computer realizes the intelligent prediction of the fatigue performance and wear life of the nozzle 8 and the striker 6 according to the force value size and direction, combined with artificial intelligence deep learning big data;

[0039] After the test is completed, the actuator is stopped, the striker 6 and the nozzle 8 are moved away from each other, the power is turned off, and the striker 6 and the nozzle 8 are removed.

[0040] The utility model provides a kind of nozzle and plunger's testing device for high speed point glue valve, it is realized the high frequency vibration of the nozzle 8 by piezoelectric ceramic impact module 7, and then control nozzle 8 and plunger 6 fatigue impact vibration frequency and amplitude;And based on dynamometer 9 real-time online monitoring the size and direction of force value in fatigue impact process, if force value appears sudden sharp rise or drop in test process, then it indicates that nozzle 8, plunger 6 starts to occur fatigue wear;And then according to force value size and directionality, combined with the artificial intelligence deep learning big data of computer, realize the intelligent prediction of nozzle 8 and plunger 6 fatigue performance and wear life, also can according to fatigue test result, wear characteristic analysis to carry out the selection optimization of different materials and structures of nozzle 8, plunger 6, help product cost reduction and efficiency improvement, improve the service performance and service life of high speed point glue valve.

[0041] The above is only the preferred embodiment of the utility model, and the protection scope of the utility model is not limited to the above-mentioned examples only, and any technical solution belonging to the utility model idea belongs to the protection scope of the utility model.

[0042] In the description of the utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0043] In addition, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0044] In the utility model, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; It can be mechanically connected, or it can be electrically connected; It can be directly connected, or it can be indirectly connected through an intermediate medium; It can be the communication or interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.

[0045] In the utility model, unless another definite provision and limitation, first feature is "on" or "under" second feature can include that first and second features are in direct contact, also can include that first and second features are not in direct contact but are in contact through other features between them. Moreover, first feature "on", "above" and "upper side" of second feature includes that first feature is directly above and obliquely above second feature, or only indicates that horizontal height of first feature is higher than second feature. First feature "under", "below" and "lower side" of second feature includes that first feature is directly below and obliquely below second feature, or only indicates that horizontal height of first feature is less than second feature.

Claims

1. A testing device for nozzles and impact pins of high-speed dispensing valves, comprising a base, characterized in that, The base is movably provided with a first clamping platform and a second clamping platform; the first clamping platform is provided with a first clamp for fixing the firing pin; the second clamping platform is provided with a second clamp, and a piezoelectric ceramic impact module is fixed on the second clamp, and a force measuring instrument that can fix the nozzle is provided at the output end of the piezoelectric ceramic impact module. The adjustment of the first clamping platform and the second clamping platform can bring the firing pin and the nozzle closer or further apart on the same axis, and can bring the nozzle and the firing pin into a critical contact state; the piezoelectric ceramic impact module is used to realize the high-frequency vibration of the nozzle to impact the firing pin; the force measuring instrument is used to measure the vector force information of the nozzle and feed it back to the computer for analysis and processing.

2. The testing device for nozzles and impact pins of a high-speed dispensing valve according to claim 1, characterized in that, The piezoelectric ceramic impact module includes a piezoelectric ceramic actuator, a controller for controlling the piezoelectric ceramic actuator, and a signal generator electrically connected to the controller.

3. The testing device for nozzles and impact pins of a high-speed dispensing valve according to claim 1, characterized in that, The nozzle is bonded to the end face away from the firing pin and to the side planar port of the force gauge.

4. The testing device for nozzles and impact pins of a high-speed dispensing valve according to claim 1, characterized in that, The first clamp is provided with a through hole for mounting the firing pin, and a limiting member is provided radially along the through hole for fixing the firing pin.

5. The testing device for nozzles and impact pins of a high-speed dispensing valve according to claim 1, characterized in that, The critical contact state is defined as a contact normal force of approximately 0.1-1 N as measured by the force gauge.

6. The testing apparatus for nozzles and impact pins of a high-speed dispensing valve according to any one of claims 1-5, characterized in that, The base is provided with a first drive for moving the first clamp along the Y direction; the second clamping platform is provided with a second drive and a third drive for moving the second clamp along the X and Z directions, respectively.

7. The testing apparatus for nozzles and impact pins of a high-speed dispensing valve according to claim 6, characterized in that, The base is provided with a dual-rail sliding platform, which includes two linear guide rails; the first clamping table is slidably disposed on the linear guide rails.

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