CN113866267A - Ultrasonic detection device for flash of die-pressing composite material product and control method - Google Patents
Ultrasonic detection device for flash of die-pressing composite material product and control method Download PDFInfo
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- CN113866267A CN113866267A CN202111084126.8A CN202111084126A CN113866267A CN 113866267 A CN113866267 A CN 113866267A CN 202111084126 A CN202111084126 A CN 202111084126A CN 113866267 A CN113866267 A CN 113866267A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/225—Supports, positioning or alignment in moving situation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
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Abstract
The invention relates to the technical field of composite material products, in particular to an ultrasonic detection device for flash of a die pressing composite material product and a control method. Including moulding press (16) and set up mould (15) in moulding press (16), its characterized in that: the ultrasonic molding machine further comprises a controller, a three-axis moving mechanism detachably connected to the molding press (16), an ultrasonic probe arranged on the three-axis moving mechanism and a sensor arranged on the three-axis moving mechanism, wherein the ultrasonic probe and the sensor are in signal connection with the controller. The device and the method can be used for detecting the flash in the process of producing the composite material product by die pressing.
Description
Technical Field
The invention relates to the technical field of composite material products, in particular to an ultrasonic detection device for flash of a die pressing composite material product and a control method.
Background
From the present status and development trend of lightweight materials at home and abroad, the industrial application of composite materials (such as glass fiber and carbon fiber) shows a trend of increasing year by year due to the advantages of light weight, high strength, high elastic modulus, impact resistance, shock absorption, sound insulation, corrosion resistance and the like.
Compression molding is a molding process in which a molding material is placed in a metal molding die and is pressurized and cured at a certain temperature to form a molded product. The compression molding method can stably produce the composite material compression molded product with low cost and high productivity.
However, in the compression molding process, after the upper mold and the lower mold are closed, a pressure maintaining process is performed for a certain time, and in the process, an operator cannot visually observe whether the flash is generated on the molded product. Therefore, certain difficulties arise in reasonably selecting and adjusting various molding production process parameters and press operating conditions in real time. In view of the above problems, it is desirable to invent an apparatus and a control method capable of detecting flash during the process of producing composite material products by die pressing.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the device and the method can be used for detecting the flash in the process of producing the composite material product by die pressing.
The technical scheme adopted by the invention is as follows: the utility model provides a mould pressing combined material goods overlap ultrasonic testing device, includes the moulding press and sets up the mould in the moulding press, and it still includes controller, detachable connection three-axis moving mechanism on the moulding press, sets up the ultrasonic probe on three-axis moving mechanism and sets up the sensor on three-axis moving mechanism, ultrasonic probe, sensor all with controller signal connection.
Preferably, the three-axis moving mechanism comprises an X-axis moving assembly, a Y-axis moving assembly and a Z-axis moving assembly, the X-axis moving assembly is a horizontal lead screw shaft and a horizontal lead screw pair, the Z-axis moving assembly is a vertical lead screw shaft and a vertical lead screw pair, the Y-axis moving assembly is a multi-stage hydraulic rod, the ultrasonic probe and the sensor are arranged at one end of the multi-stage hydraulic rod, and the horizontal lead screw pair is arranged at the other end of the multi-stage hydraulic rod.
Preferably, the automatic spraying device also comprises an automatic spraying coupling liquid mechanism which is in signal connection with the controller,
and the automatic coupling liquid spraying mechanism is used for automatically spraying the coupling liquid when the ultrasonic probe moves on the surface of the die.
Preferably, the three-axis moving mechanism is detachably connected to the molding press through a magnetic adsorption mechanism.
Preferably, the sensor includes a visual positioning sensor, a distance sensor and a pressure sensor, the ultrasonic probe is an ultrasonic oblique probe, wherein:
visual positioning sensor: the path is used for positioning and tracking the scanning path of the ultrasonic oblique probe;
a distance sensor: the ultrasonic angle probe is used for detecting the distance between the ultrasonic angle probe and the outer surface of the die;
a pressure sensor: the ultrasonic angle probe and the ultrasonic angle probe are fixed on the same plane and used for detecting the coupling pressure between the ultrasonic angle probe and the outer surface of the die;
and the center of the visual field of the visual positioning sensor and the center of the ultrasonic oblique probe are positioned on the same horizontal plane.
The invention adopts another technical scheme that: a control method of an ultrasonic detection device for the flash of a die-pressing composite material product comprises the following steps:
s1, setting pressure maintaining time t1, setting an ultrasonic detection path and parameters of a flash according to a die to be pressed, and moving an ultrasonic probe to an initial position through a three-axis moving mechanism;
s2, pressing by a mould press, and maintaining pressure after pressing is finished;
s3, after pressure maintaining is started, the three-axis moving mechanism drives the ultrasonic probe to detect along the detection path set in the S1, and when the flash set in the S1 is detected, the next step is carried out; if no flash is detected after t1 time, jumping to the next step;
and S4, releasing pressure by using a molding press.
Preferably, the step S1 requires setting the coupling pressure P2, the step S3 requires controlling the multi-stage hydraulic rod to move the ultrasonic probe along the Y-axis, and when the distance sensor detects that the distance between the ultrasonic probe and the die is 0, the multi-stage hydraulic rod is controlled to continue pressurizing until the pressure detected by the pressure sensor is equal to or greater than the coupling pressure P2, the multi-stage hydraulic rod stops pressurizing and maintains the current pressure.
Preferably, when the ultrasonic probe moves along the detection path set in step S1 and is detected in step S3, the automatic coupling liquid spraying mechanism sprays the coupling liquid on the detection surface of the ultrasonic probe at the same time.
Preferably, in step S3, the oblique beam method is used to detect the flash: if the sound wave does not encounter the flash in the advancing process, the reflected echo wave appears at the corresponding sound path position; if the burrs are met, the burrs play the role of a coupling agent, sound waves are emitted into the lower die through the burrs, and echo signals are obviously weakened.
Preferably, the step S3 obtains an echo signal when detecting the flash, and then adjusts the dwell time t1 according to the magnitude of the echo signal.
Compared with the prior art, the invention has the following advantages by adopting the structure method: the ultrasonic detection device can realize quick installation and disassembly, and can detect the flash of the composite material in real time in the mould pressure maintaining process through automatic control. Ultrasonic testing is performed during the process of molding the product by the mold. An operator can detect whether the composite material product has flash in real time in the pressure maintaining process. Meanwhile, the real-time detection result can be fed back to a control system of the press machine, and closed-loop control of the pressure maintaining time is realized. Therefore, various process parameters and press operating conditions are reasonably selected and adjusted, so that the quality of the molded product is improved.
Drawings
Fig. 1 is a schematic structural diagram of an ultrasonic testing device of the present invention.
Fig. 2 is an exploded view of the ultrasonic probe and sensor mounting structure of the present invention.
Fig. 3 is a schematic view of the installation of the ultrasonic testing apparatus of the present invention.
FIG. 4 is a schematic view of an ultrasonic testing process according to the present invention.
Wherein, 1, a magnetic adsorption mechanism; 2. a vertical screw servo motor; 3. a horizontal lead screw servo motor; 4. a vertical screw shaft; 5. a vertical screw pair; 6. a horizontal screw shaft; 7. a cross beam; 8. a horizontal lead screw pair; 9. a linear guide rail; 10. a linear rolling guide rail pair; 11. a fixed seat; 12. a multi-stage hydraulic rod; 13. a coupling liquid automatic spraying mechanism; 14. an ultrasonic mounting assembly; 14.1, a clamping mechanism; 14.2, a visual positioning sensor; 14.3, a distance sensor; 14.4, a pressure sensor; 14.5, ultrasonic angle probe; 14.6, an ultrasonic detector; 15. a mold; 15.1, an upper die; 15.2, a lower die; 15.3, a mould pressing cavity; 15.4, heating an oil heat conduction channel; 15.5, composite material products; 15.6, flash; 16. a die press; 16.1, a hydraulic cylinder; 16.2, a workbench; 16.3, upright columns; 16.4, guide rails; 16.5, a middle beam; 16.6 and an upper cross beam.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
The first embodiment is as follows:
the whole set of detection equipment comprises a controller, a molding press 16, a mold 15 and an ultrasonic detection device, wherein:
the controller comprises an STM32 single chip microcomputer, can realize communication with the visual positioning sensor 14.2, the distance sensor 14.3 and the pressure sensor 14.4, and controls the vertical lead screw servo motor 2, the horizontal lead screw servo motor 3 and the automatic spraying coupling liquid mechanism 13.
The die 15 comprises an upper die 15.1, a lower die 15.2, a die pressing cavity 15.3 and a heating oil heat conduction channel 15.4, and a composite material product 15.5 is obtained through the die, and flashing 15.6 is generated on the composite material product 15.5 in the pressing process.
The die press 16 mainly comprises a hydraulic cylinder 16.1, a workbench 16.2, a vertical column 16.3, a guide rail 16.4, a middle beam 16.5 and an upper beam 16.6. The upright 16.3 is forged from a metallic iron alloy. The upper die 15.1 is fixed on the centre sill 16.5, and the lower die 15.2 is fixed on the workbench 16.2. The hydraulic cylinder 16.1 drives the centre sill 16.5 to move in the vertical direction, so that the mould 15 is opened and closed.
The ultrasonic detection device comprises a three-axis moving mechanism, a magnetic adsorption mechanism 1 and an ultrasonic mounting assembly 14, wherein:
the three-axis moving mechanism comprises a vertical lead screw servo motor 2, a horizontal lead screw servo motor 3, a vertical lead screw shaft 4, a vertical lead screw pair 5, a horizontal lead screw shaft 6, a cross beam 7, a horizontal lead screw pair 8, a linear guide rail 9, a linear rolling guide rail pair 10, a fixed seat 11 and a multi-stage hydraulic rod 12, wherein the horizontal lead screw servo motor 3, the horizontal lead screw shaft 6 and the horizontal lead screw pair 8 form an X-axis moving assembly, the multi-stage hydraulic rod 12 forms a Y-axis moving assembly, and the vertical lead screw servo motor 2, the vertical lead screw shaft 4 and the vertical lead screw pair 5 form a Z-axis moving assembly; the two ends of the vertical lead screw shaft 4 and the linear guide rail 9 are respectively arranged on the fixed seat 11 and are connected with the molding press 16 through the magnetic adsorption mechanism 1; two ends of the horizontal screw shaft 6 are respectively connected with the vertical screw pair 5 and the linear rolling guide rail pair 10. The horizontal lead screw servo motor 3 and the vertical lead screw servo motor 2 are respectively connected with a horizontal lead screw shaft 6 and a vertical lead screw shaft 4 through couplings, and the upper surface and the lower surface of a cross beam 7 are respectively provided with two grooves, so that a horizontal lead screw pair 8 drives a multistage hydraulic rod 12 to move in the horizontal direction; the vertical screw rod pair 5 can drive the horizontal screw rod shaft 6 to move in the vertical direction; the multi-stage hydraulic rod 12 can drive the ultrasonic mounting assembly 14 to move horizontally and vertically to the axial direction of the horizontal screw shaft 6. Thus, a three-axis movement is achieved.
The ultrasonic mounting assembly 14 and the horizontal lead screw pair 8 are respectively fixed at two ends of the multistage hydraulic rod 12 and comprise a clamping mechanism 14.1, a visual positioning sensor 14.2, a distance sensor 14.3, a pressure sensor 14.4, an ultrasonic angle probe 14.5, an ultrasonic detector 14.6 and an automatic spraying coupling liquid mechanism 13. The clamping device 14.1 is connected to the multi-stage hydraulic ram 12. The visual positioning sensor 14.2, the distance sensor 14.3, the pressure sensor 14.4 and the ultrasonic angle probe 14.5 are fixed by a clamping mechanism 14.1.
The automatic coupling liquid spraying mechanism 13 comprises a coupling liquid accommodating device, the coupling liquid accommodating device is fixed on the horizontal screw pair 8 and is connected with the clamping mechanism 14.1 through a conduit, the coupling liquid accommodating device is also connected with a controller, and whether the coupling liquid in the coupling liquid accommodating device is released or not is controlled by the controller;
the clamping mechanism 14.1 is used for clamping and fixing the visual positioning sensor 14.2, the distance sensor 14.3, the pressure sensor 14.4 and the ultrasonic angle probe 14.5 and is connected with the multistage hydraulic rod 12. And a coupling liquid channel is arranged in the clamping mechanism 14.1 and communicated with the groove on the surface; thus, when the controller controls the coupling liquid containing device to release the coupling liquid, the coupling liquid flows out from the coupling liquid channel on the clamping mechanism 14.1.
The visual positioning sensor 14.2 is used for positioning and tracking a path scanned by the ultrasonic angle probe 14.5, and the center of the visual field of the visual positioning sensor 14.2 and the center of the ultrasonic angle probe 14.5 are in the same horizontal plane;
the distance sensor 14.3 is used for detecting the distance between the ultrasonic angle probe 14.5 and the outer surface of the die 15, and the relative height between the distance sensor 14.3 and the surface of the ultrasonic angle probe 14.5 is p;
the pressure sensor 14.4 and the ultrasonic angle probe 14.5 are fixed on the same plane and used for detecting the coupling pressure between the ultrasonic angle probe 14.5 and the outer surface of the die 15;
the ultrasonic angle probe 14.5 can select a proper nominal K value model so as to adapt to the structural characteristics of different dies 15;
the ultrasonic detector 14.6 is used for detecting the ultrasonic reflection echo received by the ultrasonic angle probe 14.5 and displaying the corresponding characteristic image.
The detection control method of the whole set of detection equipment comprises the following steps:
s1, preparation before pressing. And opening a heat conduction oil heating switch, and setting the temperatures of the upper die and the lower die to target values T1 and T2 respectively. After a certain period of time, the mold temperature sensors detect that the surface temperatures of the upper and lower molds reach target values T1, T2, respectively. Thoroughly cleaning the die, spraying a release agent, and uniformly coating the release agent by using clean gauze before feeding; meanwhile, parameters of an ultrasonic detection path and a flash are set according to the die, and then the vertical lead screw servo motor and the horizontal lead screw servo motor drive the multistage hydraulic rod to move to a set initial position according to position information fed back by the visual positioning sensor;
s2, cutting and layering. Removing the upper and lower films of the cut molding raw material sheet, moving the molding raw material sheet into a molding cavity, and arranging and layering according to the shape of the molding cavity;
and S3, pressure maintaining and forming. And starting the press machine, and driving the upper die to quickly descend by the hydraulic cylinder. When the upper die moves to the die pressing raw material sheet and is tightly contacted with the lower die, the press presses and maintains the preset forming pressure P1;
and S4, ultrasonic detection. When the upper mold moves to the state that the molding material sheet is in close contact with the lower mold in step S3, the multistage hydraulic rod drives the ultrasonic mounting assembly to be closely attached to the outer surface of the mold and to be pressurized to a predetermined coupling pressure P2. Preferably, P2 is in the range of 10-25N. The controller drives the horizontal lead screw servo motor and the vertical lead screw servo motor to drive the ultrasonic mounting assembly to move along a set detection path according to the position information fed back by the visual positioning sensor, and meanwhile, the ultrasonic detector displays characteristic information fed back by the ultrasonic angle probe.
And S5, opening the mould. When the ultrasonic detector detects the signal that the flash appears, multistage hydraulic stem decompression and with the separation of mould surface. Meanwhile, the signal is fed back to a control system of the press machine, and the press machine starts to release pressure; if the occurrence of the flash is not detected, the pressure relief of the press machine is started after the set pressure maintaining time t1 is reached. And then the hydraulic cylinder drives the upper die to move upwards, and the raw material sheets are molded to form the composite material product. And ejecting the molded product by an ejector rod in the mold, and taking out the composite material molded product.
And step S4 further includes the following steps:
s41, the distance L between the position where the flash of the known composite material molded product can be generated and the outer surface of the mold, and the refraction angle beta of the ultrasonic angle probe, wherein the distance L is 10-200mm, and the refraction angle beta is 30-80 degrees. According to the formula
Obtaining the distance H between the ultrasonic angle probe and the parting surface of the die to be 20-80 mm;
s42, calculating to obtain a vertical distance H' between the ultrasonic angle probe and the die parting surface to be 0-200mm according to a deviation value between the view center of the visual angle probe and the reference line by using the die parting surface as the reference line through the visual positioning sensor;
s43, driving the vertical screw rod servo motor to move by a distance H '-H according to the obtained distance parameter, so that the vertical distance H' is equal to H;
and S44, determining the scanning path of the ultrasonic oblique probe according to the shape and the size of the composite material product to be detected. And the visual positioning sensor determines the start and end positions of the ultrasonic oblique probe by taking the left and right boundary lines of the die as reference lines. The horizontal lead screw servo motor moves the multi-stage hydraulic rod to a corresponding initial position;
and S45, after the multi-stage hydraulic rod reaches the initial position, the couplant containing device starts to release the couplant. Subtracting the relative height p between the distance sensor and the surface of the ultrasonic angle probe according to the distance returned by the distance sensor, calculating to obtain the distance S between the ultrasonic angle probe and the outer surface of the die, which is 10-100mm, and adjusting the length of the multi-stage hydraulic rod according to the fed-back distance S;
s46, when the distance S is equal to 0, the multi-stage hydraulic rod continues to pressurize, the pressure sensor detects the coupling pressure of the ultrasonic angle probe and the surface of the die, and when the pressure reaches a preset value P2, the multi-stage hydraulic rod stops pressurizing and maintains the pressure unchanged;
and S47, the visual positioning sensor feeds back the deviation value between the visual field center and the reference line to the controller. The controller drives the screw pair to drive the ultrasonic angle probe to move from the initial position to the end position along the outer surface of the die according to the deviation value and then returns to the initial position from the end position according to a reverse path;
and S48, displaying the characteristic information fed back by the ultrasonic angle probe on the ultrasonic detector, and displaying an obvious reflection echo on the ultrasonic detector when no flash appears. When the ultrasonic echo signal is weakened or even disappears, flash is generated.
In the embodiment that the ultrasonic angle probe is used for scanning along the outer surface of the mold, the ultrasonic angle probe can be used for scanning along the outer surface of the upper mold or the outer surface of the lower mold of the mold in the transverse direction and/or the vertical direction, and the specific scanning mode needs to consider the convenience of scanning and the readability of results and is determined according to the conditions of the outer surface of the mold and the inner structure of the mold.
And the molding raw material sheet in the step S2 is a fiber layer and thermoplastic resin alternately arranged and layered or a fiber reinforced composite prepreg, wherein the fiber is carbon fiber or glass fiber.
The target values of the upper and lower mold temperatures T1, T2, the molding pressure P1, and the dwell time T1 may be set specifically according to the selected molding compound raw material. In the present embodiment, the molding pressure P1: 700 and 1000KN, and upper die temperature T1: 140-: 140 ℃ and 170 ℃, and the pressure maintaining time t 1: 1-3min, coupling pressure P2: 10-25N, and the distance L between the flash and the edge of the die is as follows: 10-200mm, angle of refraction β: 30-80 °, relative height p of the distance sensor to the ultrasonic angle probe surface: 10-50mm, initial distance H' between visual positioning ultrasonic angle probe and die parting surface: 0-200mm, actual distance H between ultrasonic angle probe and die parting surface: 20-80mm, moving distance h: 120-180mm, and the distance S between the ultrasonic oblique probe and the outer surface of the die is as follows: 0-150 mm.
Example two:
the structure of the whole set of detection equipment is the same as that of the first specific embodiment, but the control method is different, and in the ultrasonic detection of step S4 in this embodiment, the ultrasonic mounting component continues to perform the back-and-forth detection until the flashing is detected or the dwell time t1 is reached.
Example three:
the structure of the whole detection device is the same as that of the first specific embodiment, but the control method is different, in this embodiment, an echo signal is obtained when the step S3 detects the flash, and then the dwell time t1 is adjusted according to the size of the echo signal, that is, if the echo signal is completely free of the flash, the dwell time is not changed, and if the echo signal indicates that a certain flash is generated, but a critical flash threshold value is not reached yet, the appropriate dwell time t1 can be reduced.
It should be noted that, in the description of the present invention, it is to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship indicated based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Various alterations and modifications will no doubt become apparent to those skilled in the art after having read the above description. Therefore, the appended claims should be construed to cover all such variations and modifications as fall within the true spirit and scope of the invention. Any and all equivalent ranges and contents within the scope of the claims should be considered to be within the intent and scope of the present invention.
Claims (10)
1. The ultrasonic detection device for the flash of the die pressing composite material product comprises a die pressing machine (16) and a die (15) arranged in the die pressing machine (16), and is characterized in that: the ultrasonic molding machine further comprises a controller, a three-axis moving mechanism detachably connected to the molding press (16), an ultrasonic probe arranged on the three-axis moving mechanism and a sensor arranged on the three-axis moving mechanism, wherein the ultrasonic probe and the sensor are in signal connection with the controller.
2. The ultrasonic testing device for the flash of the die-pressing composite material product according to claim 1, characterized in that: the three-axis moving mechanism comprises an X-axis moving assembly, a Y-axis moving assembly and a Z-axis moving assembly, the X-axis moving assembly is a horizontal lead screw shaft (6) and a horizontal lead screw pair (8), the Z-axis moving assembly is a vertical lead screw shaft (4) and a vertical lead screw pair (5), the Y-axis moving assembly is a multi-stage hydraulic rod (12), the ultrasonic probe and the sensor are arranged at one end of the multi-stage hydraulic rod (12), and the horizontal lead screw pair (8) is arranged at the other end of the multi-stage hydraulic rod (12).
3. The ultrasonic testing device for the flash of the die-pressing composite material product according to claim 2, characterized in that: it also comprises an automatic spraying coupling liquid mechanism (13), the automatic spraying coupling liquid mechanism (13) is in signal connection with the controller,
and the automatic coupling liquid spraying mechanism (13) is used for automatically spraying the coupling liquid when the ultrasonic probe moves on the surface of the die (15).
4. The ultrasonic testing device for the flash of the die-pressing composite material product according to claim 1, characterized in that: the three-axis moving mechanism is detachably connected to the molding press (16) through the magnetic adsorption mechanism (1).
5. The ultrasonic testing device for the flash of the die-pressing composite material product according to claim 1, characterized in that: the sensor comprises a visual positioning sensor (14.2), a distance sensor (14.3) and a pressure sensor (14.4), the ultrasonic probe is an ultrasonic angle probe (14.5), wherein:
visual positioning sensor (14.2): the path is used for positioning and tracking the scanning of the ultrasonic oblique probe (14.5);
distance sensor (14.3): the ultrasonic angle probe is used for detecting the distance between the ultrasonic angle probe (14.5) and the outer surface of the die (15);
pressure sensor (14.4): the ultrasonic angle probe and the ultrasonic angle probe (14.5) are fixed on the same plane and used for detecting the coupling pressure between the ultrasonic angle probe (14.5) and the outer surface of the die (15);
and the center of the visual field of the visual positioning sensor (14.2) and the center of the ultrasonic angle probe (14.5) are in the same horizontal plane.
6. A control method of an ultrasonic detection device for the flash of a die pressing composite material product is characterized by comprising the following steps:
s1, setting the pressure maintaining time t1, simultaneously setting the ultrasonic detection path and the parameters of the flash according to the die needing to be pressed,
then the ultrasonic probe is moved to an initial position through a three-axis moving mechanism;
s2, pressing by a mould press, and maintaining pressure after pressing is finished;
s3, after pressure maintaining is started, the three-axis moving mechanism drives the ultrasonic probe to detect along the detection path set in the S1, and when the flash set in the S1 is detected, the next step is carried out; if no flashing is detected after the time t1,
skipping to the next step;
and S4, releasing pressure by using a molding press.
7. The control method of the ultrasonic detection device for the flash of the die-pressing composite material product according to claim 6, characterized in that: step S1 requires setting the coupling pressure P2, step S3 requires controlling the multi-stage hydraulic rod to drive the ultrasonic probe to move on the Y axis, and when the distance sensor detects that the distance between the ultrasonic probe and the die is 0, controlling the multi-stage hydraulic rod to continue pressurizing until the pressure detected by the pressure sensor is greater than or equal to the coupling pressure P2, the multi-stage hydraulic rod stops pressurizing and maintains the current pressure.
8. The control method of the ultrasonic detection device for the flash of the die-pressing composite material product according to claim 6, characterized in that: when the ultrasonic probe moves along the detection path set in step S1 for detection in step S3, the automatic coupling liquid spraying mechanism sprays the coupling liquid on the detection surface of the ultrasonic probe at the same time.
9. The control method of the ultrasonic detection device for the flash of the die-pressing composite material product according to claim 6, characterized in that: in step S3, the oblique beam method is used to detect the flash: if the sound wave does not encounter the flash in the advancing process, the reflected echo wave appears at the corresponding sound path position; if the burrs are met, the burrs play the role of a coupling agent, sound waves are emitted into the lower die through the burrs, and echo signals are obviously weakened.
10. The control method of the ultrasonic detection device for the flash of the die-pressing composite material product according to claim 9, characterized in that: the step S3 obtains an echo signal when detecting the flash, and then adjusts the dwell time t1 according to the magnitude of the echo signal.
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Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0538742A (en) * | 1991-04-10 | 1993-02-19 | Sekisui Chem Co Ltd | Molding condition setting method of injection molder |
| CN1696685A (en) * | 2005-05-16 | 2005-11-16 | 西北工业大学 | Real time ultrasonic detection and monitoring method |
| US20060197247A1 (en) * | 1998-02-12 | 2006-09-07 | Moldflow Pty Ltd | Automated Molding Technology For Thermoplastic Injection Molding |
| CN102554629A (en) * | 2012-03-02 | 2012-07-11 | 浙江大学宁波理工学院 | Flash removing device |
| CN102601951A (en) * | 2012-03-12 | 2012-07-25 | 浙江大学 | Method for detecting die cavity pressure in injection molding process based on ultrasonic signals |
| CN202462920U (en) * | 2012-03-21 | 2012-10-03 | 郑州职业技术学院 | Powder material compression moulding device |
| CN106827389A (en) * | 2017-02-27 | 2017-06-13 | 浙江工业大学 | A kind of extraneous gas aid injection molding method and former based on ultrasonic measurement |
| DE102018131126A1 (en) * | 2017-12-07 | 2019-06-13 | Johannes Kepler Universität Linz | Process monitoring in the production of injection molded parts |
| CN110057914A (en) * | 2019-05-29 | 2019-07-26 | 山东大学 | The automation non-destructive testing device and method of composite material curved-surface structure |
| CN112014467A (en) * | 2020-08-20 | 2020-12-01 | 超威电源集团有限公司 | Device and method for detecting quality defects of storage battery grid and method for detecting defects of grid mold |
| CN112263272A (en) * | 2020-08-24 | 2021-01-26 | 中国科学院长春光学精密机械与物理研究所 | Force position control device for assisting ultrasonic probe detection and control method thereof |
| CN112454789A (en) * | 2020-11-26 | 2021-03-09 | 杭州可速自动化设备有限公司 | Mould pressing product overlap processing apparatus and moulding-pressing equipment |
| CN213947173U (en) * | 2020-09-25 | 2021-08-13 | 杭州可速自动化设备有限公司 | Automatic deburring device and molding equipment |
-
2021
- 2021-09-15 CN CN202111084126.8A patent/CN113866267B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0538742A (en) * | 1991-04-10 | 1993-02-19 | Sekisui Chem Co Ltd | Molding condition setting method of injection molder |
| US20060197247A1 (en) * | 1998-02-12 | 2006-09-07 | Moldflow Pty Ltd | Automated Molding Technology For Thermoplastic Injection Molding |
| CN1696685A (en) * | 2005-05-16 | 2005-11-16 | 西北工业大学 | Real time ultrasonic detection and monitoring method |
| CN102554629A (en) * | 2012-03-02 | 2012-07-11 | 浙江大学宁波理工学院 | Flash removing device |
| CN102601951A (en) * | 2012-03-12 | 2012-07-25 | 浙江大学 | Method for detecting die cavity pressure in injection molding process based on ultrasonic signals |
| CN202462920U (en) * | 2012-03-21 | 2012-10-03 | 郑州职业技术学院 | Powder material compression moulding device |
| CN106827389A (en) * | 2017-02-27 | 2017-06-13 | 浙江工业大学 | A kind of extraneous gas aid injection molding method and former based on ultrasonic measurement |
| DE102018131126A1 (en) * | 2017-12-07 | 2019-06-13 | Johannes Kepler Universität Linz | Process monitoring in the production of injection molded parts |
| CN110057914A (en) * | 2019-05-29 | 2019-07-26 | 山东大学 | The automation non-destructive testing device and method of composite material curved-surface structure |
| CN112014467A (en) * | 2020-08-20 | 2020-12-01 | 超威电源集团有限公司 | Device and method for detecting quality defects of storage battery grid and method for detecting defects of grid mold |
| CN112263272A (en) * | 2020-08-24 | 2021-01-26 | 中国科学院长春光学精密机械与物理研究所 | Force position control device for assisting ultrasonic probe detection and control method thereof |
| CN213947173U (en) * | 2020-09-25 | 2021-08-13 | 杭州可速自动化设备有限公司 | Automatic deburring device and molding equipment |
| CN112454789A (en) * | 2020-11-26 | 2021-03-09 | 杭州可速自动化设备有限公司 | Mould pressing product overlap processing apparatus and moulding-pressing equipment |
Non-Patent Citations (3)
| Title |
|---|
| 吴凤楠: "SMC 与PCM 复合材料模压件力学性能", 《工程塑料应用》, vol. 48, no. 12, 31 December 2020 (2020-12-31), pages 118 - 122 * |
| 张臣臣: "环氧树脂/碳纤维复合材料模压制品表面质量影响因素分析", 《中国塑料》, vol. 37, no. 3, 31 March 2023 (2023-03-31), pages 77 - 82 * |
| 苗恩铭: "《数控机床热稳健性精度理论及应用》", 重庆大学出版社, pages: 52 * |
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