Device and method for automatically detecting size of mechanical property sample of composite solid propellant

Abstract

The invention provides a device and a method for automatically detecting the size of a mechanical property sample of a composite solid propellant. The device comprises an unstacking unit, a sample transfer unit, a detection unit, a stacking unit, a material box transfer unit, a remote monitoring unit and a control and information storage unit. The unstacking unit is used for automatically unstacking the stacked material boxes after manual feeding; the sample transfer unit is used for automatically grabbing a composite solid propellant mechanical property sample; the detection unit is used for automatically detecting a mechanical property sample of the composite solid propellant; the stacking unit is used for automatically stacking the detected sample material boxes; the material box transferring unit is used for transferring the material boxes among the unstacking unit, the detecting unit and the stacking unit; and the remote monitoring unit is used for remotely monitoring the running state of the equipment. According to the invention, automatic remote control operation and non-contact measurement of the size measurement of the mechanical property sample of the composite solid propellant are realized, and the test safety and precision are improved.

Description

Technical Field

[0001] The invention relates to the field of composite solid propellant mechanical property testing, and in particular to a composite solid propellant mechanical property sample size automatic detection device and method. Background Art

[0002] The mechanical properties of solid propellants directly affect the performance of energy and also determine the scope of use of weapons and equipment. Through the mechanical properties test of solid propellants, various performance index parameters can be obtained, such as Poisson's ratio, elastic modulus, elongation, hardness, relaxation, creep and other important performance parameters, which are important reference indicators for evaluating whether the performance of solid propellants meets the requirements of use during various periods such as life and use. The uniaxial tensile test is to observe the stress-strain response function relationship of the specimen during the process of being stretched to fracture under the conditions of specified test temperature, humidity and strain rate. The stress-strain curve obtained from the test can be used to obtain the mechanical properties data such as elastic modulus, maximum tensile strength, fracture strength, maximum elongation and elongation at break of solid propellants. Because the method is simple and practical, the uniaxial tensile test is the most widely used mechanical properties test method in the field of propellants. At present, the mechanical properties test of solid propellants is carried out according to GJB770B-2005 method 413.1 maximum tensile strength, fracture strength, maximum elongation and elongation at break - uniaxial tensile method, and the sample size is dumbbell type B. Since the elastic modulus, maximum tensile strength and fracture strength of solid propellants are important mechanical performance parameters, it is necessary to measure the width and thickness of the sample to obtain the accurate initial cross-sectional area of ​​the sample at the engineering gauge end. At present, the equipment used for solid propellant size measurement is the contact chamber measurement of the dial gauge thickness gauge, which requires the operator to hold the propellant sample in hand and operate it at close range.

[0003] There are external stimuli such as friction, pressure collision, and static electricity in the entire operation process. With the increasingly higher performance requirements of missile technology and aerospace industry for solid propellants, new high-energy explosives, energy-containing speed increasers, nano-efficient catalysts, etc. are widely used in solid propellant research and production. These high-energy, high-burning-rate, and high-sensitivity solid propellants have greatly increased the risk factor of the test operation process. In addition, since composite solid propellants are viscoelastic materials, during the contact measurement using a dial indicator thickness gauge, external forces will cause the sample to deform, thereby affecting the test accuracy. Summary of the invention

[0004] In order to solve the above problems, the present invention discloses an automatic detection device for the size of composite solid propellant mechanical properties samples, which includes a depalletizing unit, a sample transport unit, a detection unit, a palletizing unit, a material box transport unit, a remote monitoring unit, and a control and information storage unit;

[0005] The destacking unit is used to automatically destacker the stacked boxes after they are manually loaded;

[0006] The sample transfer unit is used for automatically grabbing the composite solid propellant mechanical properties sample;

[0007] The detection unit is used for automatic detection of mechanical property samples of composite solid propellant;

[0008] The palletizing unit is used for automatically palletizing the sample boxes that have been inspected;

[0009] The material box transfer unit is used to transfer the material box between the depalletizing unit, the detection unit, and the palletizing unit;

[0010] The remote monitoring unit is used to remotely monitor the operating status of the equipment;

[0011] The control and information storage unit is used to control the operation of the composite solid propellant mechanical property sample size automatic detection system and the storage of model and size information.

[0012] Furthermore, the depalletizing unit comprises a depalletizing cylinder, a material box, a depalletizing guide slot, and a depalletizing fork arm;

[0013] The destacking cylinder is connected to the destacking fork arm, and provides a power source for the destacking fork arm to move up and down during destacking;

[0014] The bottom of the material box is designed with two notches;

[0015] The destacking fork arm is a double-arm design, which is consistent with the size of the two notches at the bottom of the material box;

[0016] The destacking guide slot is used for stacking and placing material boxes.

[0017] Furthermore, the palletizing unit comprises a palletizing cylinder, a palletizing guide slot, and a palletizing fork arm;

[0018] The stacking cylinder is connected to the stacking fork arm, and provides a power source for the stacking fork arm to perform telescopic movement during stacking;

[0019] The stacking fork arm is a double-arm design, which is consistent with the size of the two notches at the bottom of the material box;

[0020] The stacking guide slot is used for stacking and placing material boxes.

[0021] Furthermore, the material box adopts a slot-embedded structure, and its size is consistent with the size of a standard sample of mechanical properties of composite solid propellant.

[0022] Furthermore, the sample transport unit comprises a sample horizontal motion guide rail, a vertical motion guide rail, a first cylinder, a second cylinder, a pneumatic gripper, and a swing cylinder;

[0023] The sample horizontal motion guide rail space is vertical and mounted above the material box transfer unit;

[0024] The vertical motion guide rail is perpendicular to and fixed to the sample horizontal motion guide rail;

[0025] The pneumatic gripper is connected to the swing cylinder and is composed of a plurality of small suction cups for grabbing the sample;

[0026] The swing cylinder is connected to the vertical motion guide rail to provide power and suction for the pneumatic gripper to flip;

[0027] The first cylinder is connected to the vertical motion guide rail, providing power for the swing cylinder and the pneumatic gripper to move on the vertical motion guide rail; the second cylinder is connected to the horizontal motion guide rail of the sample, providing power for the vertical motion guide rail, the swing cylinder and the pneumatic gripper to move on the horizontal guide rail of the sample.

[0028] Furthermore, the detection unit includes a first visual measurement system, a second visual measurement system and a measurement platform;

[0029] The first visual measurement system is placed directly above the sample to measure the width of the sample; the second visual measurement system is placed in front of the side of the sample to measure the thickness of the sample;

[0030] The measuring platform is used for placing the sample.

[0031] Furthermore, the material box transfer unit includes a cylinder, a lifting cylinder, a material box horizontal motion guide rail, and a lifting platform;

[0032] The cylinder is connected to the horizontal motion guide rail of the material box, providing power for the lifting cylinder and the lifting platform to move on the horizontal motion guide rail of the material box;

[0033] The lifting cylinder is installed on the horizontal motion guide rail of the material box to provide power for the lifting platform to move up and down;

[0034] The lifting platform is fixedly connected to the lifting cylinder.

[0035] The present invention also discloses a composite solid propellant mechanical property sample size automatic detection method using the composite solid propellant mechanical property sample size automatic detection device, and the specific steps are as follows:

[0036] S1: After inputting the sample model, quantity and other parameter information in the control and information storage unit;

[0037] S2: The destacking unit automatically completes the destacking of the material box, and at the same time transfers the material box to the detection unit through the material box transfer unit. The sample transfer unit grabs the samples in the material box in turn, and transfers the samples to the detection unit to complete the size measurement. The material box transfer unit moves to the bottom of the destacking unit, and the lifting cylinder provides power to lift the lifting platform. When the lifting platform rises to contact the bottom material box, the fork arm retracts, and the material box falls into the lifting platform under the action of gravity; after the lifting platform descends and resets to a fixed position, the fork arm resets to continue to support the material box to be tested; the bottom material box is fixed on the lifting platform; the lifting platform continues to reset to its original position to complete the destacking of the material box; the material box transfer unit carries the destacking material box along the horizontal motion guide rail of the material box to the detection unit, and the sample transfer unit intervenes at the same time. The pneumatic gripper moves to the top of the material box, grabs the sample, and with the assistance of the swing cylinder, completes the adjustment of the position in the sample space and places it on the measurement platform. The first visual measurement system and the second visual measurement system automatically complete the measurement of the sample size and store the data records in the control and information storage unit;

[0038] S3: The test data is automatically stored in the control and information storage unit. At the same time, the sample transfer unit transfers the sample that has completed the size measurement to the material box and grabs the next sample for measurement. After the measurement is completed, the pneumatic gripper grabs the sample and puts it back into the material box, grabs the remaining samples and repeats the operation until all the samples in the material box have been measured;

[0039] S4: After all the samples in the material box have completed the size measurement, the material box transfer unit transfers the material box to the stacking unit to complete the stacking of the material box; after the stacking is completed, the material box transfer unit runs to the destacking unit and continues to transfer the next destacking material box until the size measurement of all the samples is completed. The material box transfer unit continues to work, carrying the material box that has completed the measurement and continues to move along the material box horizontal motion guide rail to the bottom of the stacking unit; the lifting cylinder provides power, the lifting platform is lifted, and after the material box is lifted to a fixed position, the fork arm retracts; the lifting platform continues to lift, and after the material box is lifted to the placement position, the fork arm is reset to continue to support the material box that has completed the measurement; at the same time, the lifting platform is reset, and the material box transfer unit moves to the bottom of the destacking unit.

[0040] Compared with the prior art, the present invention has the following beneficial effects:

[0041] 1. The present invention realizes the automated remote control operation and non-contact measurement of the size measurement of composite solid propellant mechanical properties specimens, eliminates the potential safety hazards and human errors in the size measurement link, improves the test efficiency and test accuracy, and improves the inherent safety of the solid propellant mechanical properties test process and the consistency of the test quality.

[0042] 2. The present invention reduces the unsafe factors caused by external stimulation sources such as friction, pressure collision, static electricity, etc., which are generated by operators on composite solid propellants during manual operations, eliminates the potential safety hazards and human errors in the dimension measurement link, improves the test efficiency and test accuracy, and improves the inherent safety of the solid propellant mechanical property test process and the consistency of the test quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0044] Figure 1 A top view of an automatic detection device for the size of a composite solid propellant mechanical property sample according to the present invention;

[0045] Figure 2 It is a front view of an automatic detection device for the size of a composite solid propellant mechanical property sample according to the present invention;

[0046] Figure 3 It is a front view of a destacking unit of a composite solid propellant mechanical property sample size automatic detection device of the present invention;

[0047] Figure 4 A front view of a material box of a composite solid propellant mechanical property sample size automatic detection device of the present invention;

[0048] Figure 5 A front view of a sample transfer unit of a composite solid propellant mechanical property sample size automatic detection device of the present invention;

[0049] Figure 6 A front view of a detection unit of an automatic detection device for the size of a composite solid propellant mechanical property sample according to the present invention;

[0050] Figure 7 A front view of a stacking unit of an automatic detection device for the size of composite solid propellant mechanical properties samples according to the present invention;

[0051] Figure 8 A front view of a material box transfer unit of an automatic detection device for the size of a composite solid propellant mechanical property sample according to the present invention;

[0052] In the figure: 1 is a depalletizing unit; 2 is a sample transport unit; 3 is a detection unit; 4 is a palletizing unit; 5 is a material box transport unit; 11 is a depalletizing cylinder; 12 is a material box; 13 is a depalletizing guide slot; 14 is a depalletizing fork arm; 21 is a sample horizontal motion guide rail; 22 is a vertical motion guide rail; 23 is a first cylinder; 24 is a second cylinder; 25 is a pneumatic gripper; 26 is a swing cylinder; 31 is a first visual measurement system; 32 is a second visual measurement system; 33 is a measuring platform; 34 is a measuring positioning member; 41 is a palletizing cylinder; 42 is a palletizing guide slot; 43 is a palletizing fork arm; 51 is a cylinder; 52 is a lifting cylinder; 53 is a material box horizontal motion guide rail; 54 is a lifting platform. DETAILED DESCRIPTION

[0053] The following describes the embodiments of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention.

[0054] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention, and thus the drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0055] The present invention discloses an automatic detection device for the size of composite solid propellant mechanical properties samples, comprising a depalletizing unit 1, a sample transporting unit 2, a detection unit 3, a palletizing unit 4, a material box transporting unit 5, a remote monitoring unit, and a control and information storage unit;

[0056] The destacking unit 1 is used to automatically destacker the stacked boxes after they are manually loaded;

[0057] The sample transport unit 2 is used for automatically grabbing the composite solid propellant mechanical properties sample;

[0058] The detection unit 3 is used for automatic detection of mechanical properties samples of composite solid propellant;

[0059] The stacking unit 4 is used for automatically stacking the sample boxes after detection;

[0060] The material box transfer unit 5 is used for transferring the material box between the depalletizing unit 1, the detection unit 3 and the palletizing unit 4;

[0061] The remote monitoring unit is used to remotely monitor the operating status of the equipment;

[0062] The control and information storage unit is used to control the operation of the composite solid propellant mechanical property sample size automatic detection system and the storage of model and size information.

[0063] The depalletizing unit 1 comprises a depalletizing cylinder 11, a material box 12, a depalletizing guide slot 13, and a depalletizing fork arm 14;

[0064] The destacking cylinder 11 is connected to the destacking fork arm 14, and provides a power source for the destacking fork arm 14 to move up and down during destacking;

[0065] The bottom of the material box 12 is designed with two notches;

[0066] The destacking fork arm 14 is a double-arm design, and the size is consistent with the two notches at the bottom of the material box 12;

[0067] The destacking guide slot 13 is used for stacking and placing the material boxes 12 .

[0068] The palletizing unit 4 includes a palletizing cylinder 41, a palletizing guide slot 42, and a palletizing fork arm 43;

[0069] The stacking cylinder 41 is connected to the stacking fork arm 43 to provide a power source for the stacking fork arm 43 to move telescopically during stacking.

[0070] The stacking fork arm 43 is a double-arm design, which is consistent with the size of the two notches at the bottom of the material box 12;

[0071] The stacking guide slot 42 is used for stacking and placing the material boxes 12 .

[0072] The material box 12 adopts a slot-embedded structure, and its size is consistent with the size of a standard sample of composite solid propellant mechanical properties.

[0073] The sample transport unit 2 includes a sample horizontal motion guide rail 21, a vertical motion guide rail 22, a first cylinder 23, a second cylinder 24, a pneumatic gripper 25, and a swing cylinder 26;

[0074] The sample horizontal motion guide rail 21 is vertically arranged above the material box transfer unit 5;

[0075] The vertical motion guide rail 22 is vertical and fixed to the sample horizontal motion guide rail 21;

[0076] The pneumatic gripper 25 is connected to the swing cylinder 26 and is composed of a plurality of small suction cups for grabbing the sample;

[0077] The swing cylinder 26 is connected to the vertical motion guide rail 22 to provide power and suction for the pneumatic gripper 25 to flip;

[0078] The first cylinder 23 is connected to the vertical motion guide rail 22, providing power for the swing cylinder 26 and the pneumatic gripper 25 to move on the vertical motion guide rail 22; the second cylinder 24 is connected to the sample horizontal motion guide rail 21, providing power for the vertical motion guide rail 22, the swing cylinder 26, and the pneumatic gripper 25 to move on the horizontal guide rail;

[0079] The detection unit 3 includes a first visual measurement system 31, a second visual measurement system 32 and a measurement platform 33;

[0080] The first visual measurement system 31 is placed directly above the sample to measure the width of the sample; the second visual measurement system 32 is placed in front of the sample to measure the thickness of the sample;

[0081] The measuring platform 33 is used for placing the sample.

[0082] The material box transfer unit 5 includes a cylinder 51, a lifting cylinder 52, a material box horizontal motion guide rail 53, and a lifting platform 54;

[0083] The cylinder 51 is connected to the horizontal motion guide rail 53 of the material box, providing power for the lifting cylinder 52 and the lifting platform 54 to move on the horizontal motion guide rail 53 of the material box;

[0084] The lifting cylinder 52 is installed on the horizontal motion guide rail 53 of the material box to provide power for the lifting platform 54 to move up and down;

[0085] The lifting platform 54 is fixedly connected to the lifting cylinder 52 .

[0086] The present invention also discloses a method for using the composite solid propellant mechanical property sample size automatic detection device, and the specific steps are as follows:

[0087] S1: After inputting the sample model, quantity and other parameter information in the control and information storage unit;

[0088] S2: The destacking unit 1 automatically completes the destacking of the material box 12, and at the same time transfers the material box to the detection unit 3 through the material box transfer unit 5. The sample transfer unit 2 grabs the samples in the material box 12 in turn, and transfers the samples to the detection unit 3 to complete the size measurement. The material box transfer unit 5 moves to the bottom of the destacking unit 1, and the lifting cylinder 52 provides power to lift the lifting platform 54. When the lifting platform 54 rises to contact the bottom material box 12, the fork arm 14 retracts, and the material box 12 falls into the lifting platform 54 under the action of gravity; after the lifting platform 54 descends and resets to a fixed position, the fork arm 14 resets to continue to support the material box 12 to be tested; the bottom material box 12 is fixed on the lifting platform 54; the lifting platform 54 continues to reset to its original position to complete the destacking of the material box 12; the material box transfer unit 5 carries the destacking material box 12 and moves along the material box horizontal guide rail 53 to the detection unit 3. The sample transfer unit 2 intervenes at the same time, and the pneumatic gripper 25 moves to the top of the material box 12 to grab the sample. With the assistance of the swing cylinder 26, the position of the sample in the space is adjusted and placed on the measuring platform 33. The first visual measurement system 31 and the second visual measurement system 32 automatically complete the measurement of the sample size and store the data records in the control and information storage unit.

[0089] S3: The test data is automatically stored in the control and information storage unit, and at the same time, the sample transfer unit 2 transfers the sample that has completed the size measurement to the material box 12, and grabs the next sample for measurement. After the measurement is completed, the pneumatic gripper 25 grabs the sample and puts it back to the material box 12, grabs the remaining samples and repeats the operation until all the samples in the material box 12 have been measured;

[0090] S4: After all the samples in the material box 12 have completed the size measurement, the material box transfer unit 5 transfers the material box 12 to the stacking unit 4 to complete the stacking of the material box 12; after completing the stacking, the material box transfer unit 5 runs to the destacking unit 1, and continues to transfer the next destacking material box 12, until the size measurement of all samples is completed. The material box transfer unit 5 continues to work, carrying the material box 12 that has completed the measurement and continues to move along the box horizontal motion guide rail 53 to the bottom of the stacking unit 4; the lifting cylinder 52 provides power, the lifting platform 54 is lifted, and after lifting the material box 12 to a fixed position, the fork arm 14 retracts; the lifting platform 54 continues to lift, and after lifting the material box 12 to the placement position, the fork arm is reset to continue to support the material box 12 that has completed the measurement; at the same time, the lifting platform 54 is reset, and the material box transfer unit 5 moves to the bottom of the destacking unit 1.

[0091] The embodiments of the present invention described above are only used to help explain the present invention. These embodiments are selected and specifically described in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and changes can be made according to the content of this specification, which all belong to the protection scope of the present invention.

Claims

1. An automatic detection device for the size of composite solid propellant mechanical properties samples, characterized in that: It comprises a depalletizing unit (1), a sample transporting unit (2), a detection unit (3), a palletizing unit (4), a material box transporting unit (5), a remote monitoring unit, and a control and information storage unit; The destacking unit (1) is used to automatically destacker the stacked material boxes after they are manually loaded; The sample transfer unit (2) is used for automatically grabbing composite solid propellant mechanical property samples; The detection unit (3) is used for automatic detection of mechanical property samples of composite solid propellant; The stacking unit (4) is used to automatically stack the sample boxes that have been tested. The material box transfer unit (5) is used for transferring the material box between the depalletizing unit (1), the detection unit (3) and the palletizing unit (4); The remote monitoring unit is used to remotely monitor the operating status of the equipment; The control and information storage unit is used to control the operation of the composite solid propellant mechanical property sample size automatic detection system and the storage of model and size information.

2. The automatic detection device for the size of composite solid propellant mechanical properties sample according to claim 1, characterized in that: The depalletizing unit (1) comprises a depalletizing cylinder (11), a material box (12), a depalletizing guide slot (13), and a depalletizing fork arm (14); The destacking cylinder (11) is connected to the destacking fork arm (14) to provide a power source for the destacking fork arm (14) to move up and down during destacking; The bottom of the material box (12) is designed with two notches; The destacking fork arm (14) is a double-arm design, and the size of the two notches at the bottom of the material box (12) is consistent; The destacking guide slot (13) is used for stacking and placing the material boxes (12).

3. The automatic detection device for the size of composite solid propellant mechanical properties sample according to claim 1, characterized in that: The palletizing unit (4) comprises a palletizing cylinder (41), a palletizing guide slot (42), and a palletizing fork arm (43); The stacking cylinder (41) is connected to the stacking fork arm (43) to provide a power source for the stacking fork arm (43) to perform telescopic movement during stacking. The stacking fork arm (43) is a double-arm design, and the size of the two notches at the bottom of the material box (12) is consistent; The stacking guide slot (42) is used for stacking and placing the material boxes (12).

4. The automatic detection device for the size of composite solid propellant mechanical properties sample according to claim 2, characterized in that: The material box (12) adopts a slot-embedded structure, and its size is consistent with the size of a standard sample of composite solid propellant mechanical properties.

5. The automatic detection device for the size of composite solid propellant mechanical properties sample according to claim 1, characterized in that: The sample transport unit (2) comprises a sample horizontal motion guide rail (21), a vertical motion guide rail (22), a first cylinder (23), a second cylinder (24), a pneumatic gripper (25), and a swing cylinder (26); The horizontal motion guide rail (21) is vertically mounted above the material box transfer unit (5); The vertical motion guide rail (22) is vertical and fixed to the sample horizontal motion guide rail (21); The pneumatic gripper (25) is connected to the swing cylinder (26), and is composed of a plurality of small suction cups, and is used for grasping the sample; The swing cylinder (26) is connected to the vertical motion guide rail (22) to provide power and suction for the pneumatic gripper (25) to flip; The first cylinder (23) is connected to the vertical motion guide rail (22) to provide power for the swing cylinder (26) and the pneumatic gripper (25) to move on the vertical motion guide rail (22); the second cylinder (24) is connected to the sample horizontal motion guide rail (21) to provide power for the vertical motion guide rail (22), the swing cylinder (26) and the pneumatic gripper (25) to move on the horizontal guide rail.

6. The automatic detection device for the size of composite solid propellant mechanical properties sample according to claim 1, characterized in that: The detection unit (3) comprises a first visual measurement system (31), a second visual measurement system (32) and a measurement platform (33); The first visual measurement system (31) is placed directly above the sample and is used to measure the width of the sample; the second visual measurement system (32) is placed in front of the side of the sample and is used to measure the thickness of the sample; The measuring platform (33) is used for placing the sample.

7. The automatic detection device for the size of composite solid propellant mechanical properties sample according to claim 1, characterized in that: The material box transfer unit (5) comprises a cylinder (51), a lifting cylinder (52), a material box horizontal motion guide rail (53), and a lifting platform (54); The cylinder (51) is connected to the material box horizontal motion guide rail (53) to provide power for the lifting cylinder (52) and the lifting platform (54) to move on the material box horizontal motion guide rail (53); The lifting cylinder (52) is installed on the material box horizontal motion guide rail (53) to provide power for the lifting platform (54) to move up and down; The lifting platform (54) is fixedly connected to the lifting cylinder (52).

8. A method for automatically detecting the size of composite solid propellant mechanical properties samples, characterized in that: The method of using the composite solid propellant mechanical property sample size automatic detection device according to claim 1 comprises the following steps: S1: Input the sample model, quantity and other parameter information in the control and information storage unit; S2: the destacking unit (1) automatically completes destacking of the material box (12), and at the same time, the material box (12) is transferred to the detection unit (3) through the material box transfer unit (5), and the sample transfer unit (2) sequentially grabs the samples in the material box (12) and transfers the samples to the detection unit (3) to complete the size measurement; S3: the test data is automatically stored in the control and information storage unit, and at the same time, the sample transfer unit (2) transfers the sample that has completed the size measurement to the material box (12) and grabs the next sample for measurement; S4: After all the samples in the material box (12) have completed the size measurement, the material box transfer unit (5) transfers the material box (12) to the stacking unit (4) to complete the stacking of the material box (12); after the stacking is completed, the material box transfer unit (5) runs to the destacking unit (1) to continue to transfer the next destacking material box (12) until the size measurement of all the samples is completed.

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