Pressure resistance testing device for plastic tray

Abstract

The invention discloses a pressure resistance testing device for a plastic tray. The pressure resistance testing device comprises a testing device body, a base and a bracket, a plurality of position adjusting mechanisms are arranged in the base, each position adjusting mechanism comprises a positioning clamp, a screw rod, a transmission mechanism, a servo motor and a sliding block, and the transmission mechanism is connected between the screw rod and the servo motor; the testing device comprises a testing device body, the testing device body comprises a support, a pressure mechanism is installed in the support, the pressure mechanism comprises a pressure plate and a plurality of first driving mechanisms, an image acquisition mechanism and a plurality of pressure dividing mechanisms are arranged in the pressure plate, the testing device body further comprises a controller, and the controller comprises a position adjusting module, a pressure testing module and a data processing module. According to the invention, the position of the plastic tray can be flexibly adjusted through the position adjusting mechanism, and the partial pressure mechanism can independently apply pressure to different positions of the surface of the plastic tray, so that the pressure resistance data of different positions of the surface of the plastic tray can be obtained, and the pressure resistance test of the plastic tray is more comprehensive and accurate.

Description

Technical Field

[0001] The invention relates to the technical field of pressure resistance testing, in particular to a pressure resistance testing device for a plastic pallet. Background Art

[0002] Plastic pallets are a type of logistics unit used in conjunction with forklifts, shelves and other logistics equipment. They can be used to store, load and transport goods. They are one of the indispensable logistics equipment in modern logistics warehousing and are widely used in food, medicine, chemical industry, textile, manufacturing and other fields.

[0003] The pressure resistance test can reflect the overall strength and load-bearing capacity of the plastic pallet, and can determine the weight of the goods that the plastic pallet can bear. Therefore, in the field of plastic pallet manufacturing, the pressure resistance test of the plastic pallet is particularly important.

[0004] In existing testing equipment, the plastic pallet is usually subjected to pressure test as a whole, and the obtained pressure resistance test data is only for the plastic pallet as a whole, which can only reflect the overall strength and load-bearing capacity of the plastic pallet. However, in the actual use of plastic pallets, the weight of the goods placed on the surface of the plastic pallet is unevenly distributed, while the pressure applied during the comprehensive pressure test on the surface of the plastic pallet is uniform. Therefore, the performance data of the plastic pallet obtained by the above pressure resistance test is inaccurate and does not fit the actual application situation.

[0005] Secondly, when the plastic pallet is subjected to the pressure resistance test, the staff is required to place and adjust the plastic pallet to ensure that the plastic pallet is accurately aligned with the loading head of the pressure resistance equipment, so that the loading head can fully fit the surface of the plastic pallet, thereby ensuring the accuracy of the pressure resistance test. However, the plastic pallet has a large appearance and is also heavy. Manually adjusting the position of the plastic pallet will greatly increase the labor intensity of the staff, and the position adjustment is not accurate enough. Summary of the invention

[0006] The object of the present invention is to provide a plastic pallet pressure resistance testing device to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned object, the present invention provides the following technical solutions: a plastic pallet pressure resistance test device, comprising a test device body, a base and a bracket;

[0008] A plurality of position adjustment mechanisms are arranged inside the base, each of which comprises a positioning fixture, a screw, a transmission mechanism, a servo motor and a slider, the slider is rotatably mounted on the surface of the screw, and the positioning fixture is slidably sleeved on the surface of the slider, a transmission mechanism is connected between the screw and the servo motor, and a first pressure sensor is mounted on one side surface of the positioning fixture;

[0009] A pressure mechanism is installed inside the bracket, and the pressure mechanism includes a pressure plate and a plurality of first driving mechanisms. An image acquisition mechanism and a plurality of pressure dividing mechanisms are arranged inside the pressure plate. Each of the pressure dividing mechanisms includes a second driving mechanism and a pressure plate. A distance sensor is arranged on one side of the second driving mechanism, and a second pressure sensor is arranged inside the pressure plate.

[0010] The testing device body also includes a controller, which includes a position adjustment module, a pressure testing module and a data processing module.

[0011] Preferably, the position adjustment mechanism further comprises a plurality of guide rails, each of which corresponds to the position of the screw rod;

[0012] A pulley is rotatably mounted inside one end of each positioning fixture, and the surface of the pulley contacts the surface of the guide track.

[0013] Preferably, a spring is provided between the interior of each positioning fixture and the surface of the slider.

[0014] Preferably, a plurality of panels are provided on the surface of the base, and through grooves matching the moving track of the positioning fixture are opened on the surfaces of the plurality of panels.

[0015] Preferably, the transmission mechanisms are all belts.

[0016] Preferably, each of the first driving mechanism and the second driving mechanism is a hydraulic cylinder.

[0017] Preferably, the image acquisition mechanism is a camera.

[0018] Preferably, the output end of the position adjustment module is respectively connected to the input ends of the servo motors and the first pressure sensor in the plurality of position adjustment mechanisms.

[0019] Preferably, the output end of the pressure testing module is connected to the input ends of the pressure mechanism and the pressure dividing mechanism respectively.

[0020] Preferably, the output end of the data processing module is connected to the input ends of the position adjustment mechanism, the pressure mechanism, the pressure dividing mechanism and the image acquisition mechanism respectively.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The present invention achieves the effect of accurately adjusting the position of the plastic pallet by setting a position adjustment mechanism, which not only increases the mobility and pressure resistance test range of the plastic pallet, but also eliminates the need to manually adjust the position of the plastic pallet, greatly reducing the labor intensity of the staff, and is more conducive to the pressure resistance test effect of the plastic pallet;

[0023] 2. The present invention achieves the effect of uneven pressure test on different positions of the surface of the plastic pallet by setting a pressure dividing mechanism. The pressure dividing mechanism can simulate different actual usage conditions. By applying different pressures through the second driving mechanism, the uneven weight distribution of the loaded goods in actual use can be simulated, and the pressure resistance test results that are more in line with actual use can be obtained;

[0024] 3. The present invention achieves the effect of controlling the lifting and lowering of the positioning fixture by setting a guide track. The positioning fixture can move along the surface of the guide track. When the positioning fixture moves to the edge of the base, it can be retracted into the base to keep the panel surface free of obstructions, making it convenient for workers to place and remove the plastic pallet, which is more convenient for practical application. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the exploded structure of the main body parts of the testing device in the first embodiment of the present invention;

[0026] Figure 2 This is a schematic diagram of the appearance structure of the testing device body in Embodiment 1 of the present invention;

[0027] Figure 3 This is a schematic diagram of the appearance structure of the position adjustment mechanism in the first embodiment of the present invention;

[0028] Figure 4 This is a schematic diagram of the appearance structure of the positioning fixture in the first embodiment of the present invention;

[0029] Figure 5 Schematic diagram of the position distribution of the voltage dividing mechanism in the first embodiment of the present invention;

[0030] Figure 6 It is a schematic diagram of the cross-sectional structure of the pressing plate in the first embodiment of the present invention.

[0031] In the figure:

[0032] 100, test device body; 110, base; 111, panel; 120, bracket;

[0033] 200, position adjustment mechanism; 210, positioning fixture; 211, first pressure sensor; 212, spring; 213, pulley; 220, guide rail; 230, screw; 240, transmission mechanism; 250, servo motor; 260, slider;

[0034] 300, pressure mechanism; 310, first driving mechanism; 320, pressure plate;

[0035] 400, pressure dividing mechanism; 410, second driving mechanism; 411, pressure plate; 412, distance sensor; 413, second pressure sensor; 420, image acquisition mechanism. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] See also Figures 1 to 6 , the present invention provides the following two embodiments:

[0038] Embodiment 1:

[0039] See also Figure 1 and Figure 2 A plastic pallet pressure resistance testing device includes a testing device body 100, a base 110 and a bracket 120.

[0040] See also Figure 1 , Figure 3 and Figure 4 A plurality of position adjustment mechanisms 200 are arranged inside the base 110, and each position adjustment mechanism 200 includes a positioning fixture 210, a screw rod 230, a transmission mechanism 240, a servo motor 250 and a slider 260. The position adjustment mechanism 200 can flexibly adjust and clamp the position of the plastic pallet, which not only increases the mobility and pressure resistance test range of the plastic pallet, but also eliminates the need to manually adjust the position of the plastic pallet, greatly reducing the labor intensity of the staff, and is more conducive to the pressure resistance test effect of the plastic pallet.

[0041] See also Figure 3 and Figure 4 The slider 260 is rotatably mounted on the surface of the screw 230 , and the positioning fixture 210 is slidably sleeved on the surface of the slider 260 . A transmission mechanism 240 is connected between the screw 230 and the servo motor 250 . The transmission mechanism 240 is a belt. A first pressure sensor 211 is installed on one side of the positioning fixture 210 .

[0042] The position adjustment mechanism 200 also includes a plurality of guide rails 220, each of which corresponds to the position of the screw 230. A pulley 213 is rotatably installed inside one end of each positioning fixture 210, and the surface of the pulley 213 contacts the surface of the guide rail 220. A spring 212 is provided between the inside of each positioning fixture 210 and the surface of the slider 260. The spring 212 can keep the positioning fixture 210 moving downward by elastic force. The positioning fixture 210 can move along the surface of the guide rail 220. When the positioning fixture 210 moves to the edge of the base 110, it can be retracted into the base 110 to keep the surface of the panel 111 free of obstructions, which is convenient for the staff to place and remove the plastic pallet and more convenient for practical application.

[0043] A plurality of panels 111 are disposed on the surface of the base 110 , and through grooves matching the moving track of the positioning fixture 210 are opened on the surfaces of the plurality of panels 111 .

[0044] When the area of ​​the plastic pallet is the same as the area of ​​the lower surface of the pressure mechanism 300, the staff places the plastic pallet on the surface of the panel 111, and the position adjustment mechanism 200 drives the screw 230 to rotate through the servo motor 250, so that the slider 260 moves along the surface of the screw 230, thereby driving the positioning fixture 210 to move, and the four position adjustment mechanisms 200 clamp and position the four sides of the plastic pallet respectively. The four position adjustment mechanisms 200 are divided into two pairs by the symmetrical ends of the plastic pallet. When the first pressure sensors 211 in a pair of position adjustment mechanisms 200 all reach the set values, it is determined to be a clamping state, then the servo motor 250 stops running and keeps the positioning fixture 210 in the clamping position until the other pair of position adjustment mechanisms 200 clamps the two sides of the plastic pallet. Through the synchronous movement of the two pairs of position adjustment mechanisms 200, the plastic pallet can be stably and accurately positioned on the surface of the panel 111, which is beneficial for the subsequent pressure mechanism 300 to apply pressure to the surface of the plastic pallet.

[0045] See also Figure 1 and Figure 2 A pressure mechanism 300 is installed inside the bracket 120. The pressure mechanism 300 includes a pressure plate 320 and a plurality of first drive mechanisms 310. Each of the first drive mechanism 310 and the second drive mechanism 410 is a hydraulic cylinder.

[0046] See also Figure 5 An image acquisition mechanism 420 and a plurality of pressure dividing mechanisms 400 are disposed inside the pressure plate 320 . The image acquisition mechanism 420 is a camera. Each pressure dividing mechanism 400 includes a second driving mechanism 410 and a pressure plate 411 .

[0047] See also Figure 6 A distance sensor 412 is provided on one side of the second driving mechanism 410 , and a second pressure sensor 413 is provided inside the pressing plate 411 .

[0048] The staff sets the pressure application mode through the controller according to the mode of the pressure resistance test. When the surface of the plastic pallet is subjected to uneven pressure resistance test, the staff can set the ejection distance and applied pressure of each pressure dividing mechanism 400 according to different usage conditions of the plastic pallet, thereby forming different pressure areas on the surface of the plastic pallet, which can be used to simulate the plastic pallet in an uneven bearing capacity state.

[0049] After the pressure-sharing mechanism 400 is ejected, the distance sensor 412 and the second pressure sensor 413 respectively detect the ejection distance and the contact surface pressure of the pressure plate 411. The actual ejection distance of the pressure plate 411 can be detected by the distance sensor 412, and the deformation distance of the pressure surface can be obtained by subtracting the ejection stroke distance of the second driving mechanism 410. The pressure resistance data of each area on the surface of the plastic pallet can be obtained in combination with the pressure value, so that the pressure resistance test of the plastic pallet is more in line with actual usage. Therefore, the measured pressure resistance data is also more real and accurate.

[0050] The testing device body 100 further includes a controller, which includes a position adjustment module, a pressure testing module and a data processing module.

[0051] The output end of the position adjustment module is respectively connected to the input ends of the servo motors 250 and the first pressure sensor 211 in the multiple position adjustment mechanisms 200. The position adjustment module can be flexibly set, and the staff can input the size specifications of the plastic pallet to be tested in advance to facilitate the adaptation of the position adjustment mechanism 200.

[0052] The output end of the pressure test module is connected to the input end of the pressure mechanism 300 and the pressure dividing mechanism 400 respectively.

[0053] The output end of the data processing module is respectively connected to the input ends of the position adjustment mechanism 200, the pressure mechanism 300, the pressure dividing mechanism 400 and the image acquisition mechanism 420. After the pressure resistance test is completed, the pressure mechanism 300 rises, and the image acquisition mechanism 420 takes a picture of the surface of the plastic pallet to perform image acquisition, which, combined with the pressure resistance test values, is more conducive to data analysis for staff.

[0054] Embodiment 2:

[0055] When the plastic pallet is subjected to an overall pressure resistance test, the pressure mechanism 300 is pushed out by the first drive mechanism 310 and pressed down to the surface of the plastic pallet, so that the surface of the plastic pallet is subjected to a comprehensive and uniform pressure resistance test. During the ejection process of the first drive mechanism 310, the second drive mechanism 410 pushes the pressure plate 411 out by 5 mm, and the pressure value fed back by the second pressure sensor 413 set inside the pressure plate 411 is used to analyze the pressure resistance data of the surface of the plastic pallet when the surface is uniformly stressed. After the pressure resistance test, the pressure mechanism 300 is raised, and the image acquisition mechanism 420 takes a picture of the surface of the plastic pallet to perform image acquisition, which, together with the pressure resistance test value, is more conducive to data analysis for the staff.

[0056] Working principle: The staff places the plastic pallet on the surface of the panel 111, and the position adjustment mechanism 200 drives the screw 230 to rotate through the servo motor 250, so that the slider 260 moves along the surface of the screw 230, thereby driving the positioning fixture 210 to move. The four position adjustment mechanisms 200 clamp and position the four sides of the plastic pallet respectively. The four position adjustment mechanisms 200 are divided into two pairs by the symmetrical ends of the plastic pallet. When the first pressure sensors 211 in a pair of position adjustment mechanisms 200 all reach the set values, it is determined to be in a clamping state, then the servo motor 250 stops running and keeps the positioning fixture 210 in the clamping position until the other pair of position adjustment mechanisms 200 clamps the two sides of the plastic pallet. Through the synchronous movement of the two pairs of position adjustment mechanisms 200, the plastic pallet can be stably and accurately positioned on the surface of the panel 111, which is beneficial for the subsequent pressure mechanism 300 to apply pressure to the surface of the plastic pallet.

[0057] The staff sets the pressure application mode through the controller according to the mode of the pressure resistance test. When the plastic pallet is subjected to an overall pressure resistance test, the pressure mechanism 300 is pushed out by the first driving mechanism 310 and pressed down to the surface of the plastic pallet, so that the surface of the plastic pallet is subjected to a comprehensive and uniform pressure resistance test. During the ejection process of the first driving mechanism 310, the second driving mechanism 410 pushes the pressure plate 411 out by 5 mm. The pressure value fed back by the second pressure sensor 413 set inside the pressure plate 411 is used to analyze the pressure resistance data of the pallet surface when the plastic pallet surface is subjected to uniform force.

[0058] When the surface of the plastic pallet is subjected to an uneven pressure resistance test, the staff can set the ejection distance and applied pressure of each pressure dividing mechanism 400 according to the different usage conditions of the plastic pallet, thereby forming different pressure areas on the surface of the plastic pallet, which can be used to simulate the plastic pallet in an uneven bearing capacity state. After the pressure dividing mechanism 400 is ejected, the distance sensor 412 and the second pressure sensor 413 respectively detect the ejection distance and contact surface pressure of the pressure plate 411. The actual ejection distance of the pressure plate 411 can be detected by the distance sensor 412, and the deformation distance of the pressure surface can be obtained by subtracting the ejection stroke distance of the second driving mechanism 410. The pressure resistance data of each area on the surface of the plastic pallet can be obtained in combination with the pressure value, so that the pressure resistance test of the plastic pallet is more in line with the actual usage conditions. Therefore, the measured pressure resistance data is also more real and accurate.

[0059] After the pressure resistance test is completed, the pressure mechanism 300 rises, and the image acquisition mechanism 420 takes a picture of the surface of the plastic pallet to acquire images, which, combined with the pressure resistance test values, is more conducive to data analysis for the staff.

[0060] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A plastic pallet pressure resistance test device, characterized in that: It comprises a testing device body (100), a base (110) and a bracket (120); A plurality of position adjustment mechanisms (200) are arranged inside the base (110), each position adjustment mechanism (200) comprises a positioning fixture (210), a screw rod (230), a transmission mechanism (240), a servo motor (250) and a slider (260), the slider (260) being rotatably mounted on the surface of the screw rod (230), and the positioning fixture (210) being slidably sleeved on the surface of the slider (260), the transmission mechanism (240) being connected between the screw rod (230) and the servo motor (250), and a first pressure sensor (211) being mounted on one side surface of the positioning fixture (210); A pressure mechanism (300) is installed inside the bracket (120), the pressure mechanism (300) comprises a pressure plate (320) and a plurality of first driving mechanisms (310), an image acquisition mechanism (420) and a plurality of pressure dividing mechanisms (400) are arranged inside the pressure plate (320), each of the pressure dividing mechanisms (400) comprises a second driving mechanism (410) and a pressure plate (411), a distance sensor (412) is arranged on one side of the second driving mechanism (410), and a second pressure sensor (413) is arranged inside the pressure plate (411); The testing device body (100) further comprises a controller, which comprises a position adjustment module, a pressure testing module and a data processing module.

2. A plastic pallet pressure resistance test device according to claim 1, characterized in that: The position adjustment mechanism (200) further comprises a plurality of guide rails (220), each of the guide rails (220) corresponding to the position of the screw rod (230); A pulley (213) is rotatably mounted inside one end of each positioning fixture (210), and the surface of the pulley (213) is in contact with the surface of the guide track (220).

3. A plastic pallet pressure resistance test device according to claim 2, characterized in that: A spring (212) is provided between the interior of each positioning fixture (210) and the surface of the slider (260).

4. A plastic pallet pressure resistance test device according to claim 1, characterized in that: The surface of the base (110) is provided with a plurality of panels (111), and the surfaces of the plurality of panels (111) are provided with through grooves adapted to the moving track of the positioning fixture (210).

5. The device for testing the pressure resistance of a plastic pallet according to claim 1, characterized in that: The transmission mechanisms (240) are all belts.

6. A plastic pallet pressure resistance test device according to claim 1, characterized in that: Each of the first driving mechanism (310) and the second driving mechanism (410) is a hydraulic cylinder.

7. The device for testing the pressure resistance of a plastic pallet according to claim 1, characterized in that: The image acquisition mechanism (420) is a camera.

8. The device for testing the pressure resistance of a plastic pallet according to claim 1, characterized in that: The output end of the position adjustment module is respectively connected to the input ends of the servo motors (250) and the first pressure sensor (211) in the plurality of position adjustment mechanisms (200).

9. The device for testing the pressure resistance of a plastic pallet according to claim 1, characterized in that: The output end of the pressure test module is connected to the input ends of the pressure mechanism (300) and the pressure dividing mechanism (400) respectively.

10. The device for testing the pressure resistance of a plastic pallet according to claim 1, characterized in that: The output end of the data processing module is respectively connected to the input ends of the position adjustment mechanism (200), the pressure mechanism (300), the pressure dividing mechanism (400) and the image acquisition mechanism (420).

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