An automatic loading and unloading system and method for a hole expansion compression test fixture

Abstract

The present application relates to the technical field of clamp loading and unloading, and particularly relates to an automatic loading and unloading system and method of a hole compression test clamp. In the system, a positioning mechanism, a discharging mechanism, a gripper and a mechanical arm are included, the mechanical arm is used to drive the gripper to clamp the hole compression test clamp with a test piece; the hole compression test clamp includes two long clamping plates, two short clamping plates and two support plates, one long clamping plate, one short clamping plate and one support plate are fixed to each other through fasteners, the other long clamping plate, the other short clamping plate and the other support plate are fixed to each other through fasteners, and the two long clamping plates and the two short clamping plates are used to clamp the test piece made of fiber composite material; the positioning mechanism is used to position the hole compression test clamp by abutting against the side surfaces of the long clamping plates and the short clamping plates; and the discharging mechanism is used to dismount the test piece from between the two long clamping plates and between the two short clamping plates. The scheme can improve the loading and unloading efficiency of the hole compression test clamp.

Description

Technical Field

[0001] This invention relates to the field of fixture loading and unloading technology, and in particular to an automatic loading and unloading system and method for an open compression test fixture. Background Technology

[0002] Fiber-reinforced composites are widely used due to their high specific strength, high specific stiffness, and designability. To obtain the open-pore compression properties of specimens made of fiber-reinforced composites, it is necessary to use a standard open-pore compression test fixture to hold the specimen, preventing overall instability or local buckling during loading and thus ensuring the correct failure mode is obtained.

[0003] In related technologies, the specimens and fixtures are usually installed and disassembled manually (i.e., loading and unloading). However, this method is inefficient.

[0004] Therefore, there is an urgent need for an automatic loading and unloading system and method for perforated compression test fixtures to solve the above-mentioned technical problems. Summary of the Invention

[0005] This invention provides an automatic loading and unloading system and method for a perforated compression test fixture, which can improve the loading and unloading efficiency of the perforated compression test fixture.

[0006] In a first aspect, embodiments of the present invention provide an automatic loading and unloading system for an open-hole compression test fixture, including a positioning mechanism, an unloading mechanism, a gripper, and a robotic arm, wherein the robotic arm is used to drive the gripper to pick up and hold the open-hole compression test fixture holding the specimen;

[0007] The opening compression test fixture includes two long clamping plates, two short clamping plates, and two support plates. One of the long clamping plates, one of the short clamping plates, and one of the support plates are fixed to each other by fasteners. Another long clamping plate, another short clamping plate, and another support plate are fixed to each other by fasteners. The two long clamping plates and the two short clamping plates are used to clamp the specimen made of fiber composite material.

[0008] The positioning mechanism is used to position the perforated compression test fixture by abutting against the sides of the long clamp and the short clamp;

[0009] The unloading mechanism is used to remove the specimen from between the two long clamps and between the two short clamps.

[0010] Secondly, embodiments of the present invention provide an automatic loading and unloading method for an open-hole compression test fixture, applied to the automatic loading and unloading system described in the above embodiment, comprising:

[0011] When disassembling the specimen, the following steps are performed:

[0012] Step S11: Using the robotic arm to drive the gripper, the perforated compression test fixture holding the specimen is transferred from the first preset position to the second preset position;

[0013] Step S12: Use the two first protrusions of the first movable baffle to insert into the two first grooves of the long clamp and the short clamp on one side to fix the opening compression test fixture;

[0014] Step S13: Use the robotic arm to drive the screw gun to loosen all the fasteners of the hole compression test fixture;

[0015] Step S14: Insert the unloading plate into the cavity formed between the two long clamps and the two short clamps to push the specimen out of the cavity formed between the two long clamps and the two short clamps, thereby disassembling the specimen.

[0016] Step S16: After the specimen is disassembled, the robotic arm drives the purging tool to purge the perforated compression test fixture.

[0017] When installing the specimen, the following steps are performed:

[0018] Step S21: Use the robotic arm to drive the adsorption tool to place the new sample in the loading position;

[0019] Step S22: Using the robotic arm to drive the gripper, push the specimen in the loading position into the cavity formed between the two long clamping plates and the two short clamping plates;

[0020] Step S23: Insert the two first protrusions of the second movable baffle into the two first grooves of the long clamping plate and the short clamping plate on the other side to clamp the opening compression test fixture.

[0021] Step S24: Use the robotic arm to drive the screw gun to tighten all the fasteners of the opening compression test fixture;

[0022] Step S25: Use the robotic arm to drive the gripper to transfer the opening compression test fixture to the first preset position.

[0023] This invention provides an automatic loading and unloading system and method for an open-hole compression test fixture. By incorporating a positioning mechanism, an unloading mechanism, a gripper, and a robotic arm, the robotic arm drives the gripper to grasp and hold the specimen in the open-hole compression test fixture. The positioning mechanism positions the fixture by abutting against the sides of the long and short clamping plates. The unloading mechanism removes the specimen from between the two long clamping plates and the two short clamping plates. Therefore, this technical solution improves the loading and unloading efficiency of the open-hole compression test fixture. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the automatic loading and unloading system for an open-hole compression test fixture provided in an embodiment of the present invention;

[0026] Figure 2 yes Figure 1 A partial enlarged view of the automated loading and unloading system shown.

[0027] Figure 3 yes Figure 1 The diagram shows the structure of the gripper in the automated loading and unloading system.

[0028] Figure 4 This is a schematic diagram of the structure of an opening compression test fixture provided in an embodiment of the present invention.

[0029] Figure label:

[0030] 10 - Specimen;

[0031] 20 - Opening compression test fixture;

[0032] 201-Long plywood;

[0033] 202-Short splint;

[0034] 203-Support Board;

[0035] 204-Fasteners;

[0036] 205 - First groove;

[0037] 206 - Second groove;

[0038] 1- Positioning mechanism;

[0039] 11-First moving baffle;

[0040] 12-Second moving baffle;

[0041] 13-First protrusion;

[0042] 2-Unloading mechanism;

[0043] 21-Unloading plate;

[0044] 3-Handle;

[0045] 31 - Second protrusion;

[0046] 4-Robotic arm;

[0047] 41 - Screwdriver;

[0048] 5-Purge tools;

[0049] 6-Adsorption tools;

[0050] 7-Loading position;

[0051] 8-stop block. Detailed Implementation

[0052] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0053] like Figures 1 to 4 As shown, an embodiment of the present invention provides an automatic loading and unloading system for an open compression test fixture, including a positioning mechanism 1, an unloading mechanism 2, a gripper 3 and a robotic arm 4. The robotic arm 4 is used to drive the gripper 3 to pick up and hold the open compression test fixture 20 holding the specimen 10.

[0054] The perforated compression test fixture 20 includes two long clamping plates 201, two short clamping plates 202, and two support plates 203. One long clamping plate 201, one short clamping plate 202, and one support plate 203 are fixed to each other by fasteners 204. Another long clamping plate 201, another short clamping plate 202, and another support plate 203 are fixed to each other by fasteners 204. The two long clamping plates 201 and the two short clamping plates 202 are used to clamp the specimen 10 made of fiber composite material.

[0055] The positioning mechanism 1 is used to position the perforated compression test fixture 20 by abutting against the sides of the long clamping plate 201 and the short clamping plate 202.

[0056] The unloading mechanism 2 is used to remove the specimen 10 from between the two long clamps 201 and the two short clamps 202.

[0057] In this embodiment, by setting up a positioning mechanism 1, an unloading mechanism 2, a gripper 3, and a robotic arm 4, the robotic arm 4 can drive the gripper 3 to grasp and hold the specimen 10 in the perforated compression test fixture 20. The positioning mechanism 1 abuts against the sides of the long clamping plate 201 and the short clamping plate 202 to position the perforated compression test fixture 20. The unloading mechanism 2 is used to remove the specimen 10 from between the two long clamping plates 201 and the two short clamping plates 202. Therefore, the above technical solution can improve the loading and unloading efficiency of the perforated compression test fixture 20.

[0058] In one embodiment of the present invention, the above-mentioned automatic loading and unloading system further includes a purging tool 5, and the robotic arm 4 is used to drive the purging tool 5 to purge the perforated compression test fixture 20 after the test piece 10 is removed.

[0059] In this embodiment, by blowing the perforated compression test fixture 20 after removing the specimen 10, it can be ensured that the specimen 10 can be better installed and fixed when installing the new specimen 10.

[0060] In one embodiment of the present invention, the above-mentioned automatic loading and unloading system further includes an adsorption tool 6 and a loading position 7. The robotic arm 4 is used to drive the adsorption tool 6 to adsorb new specimens 10 and transfer them to the loading position 7. The loading position 7 is used to place new specimens 10.

[0061] In some implementations, the adsorption tool 6 may be a suction cup.

[0062] Please continue reading Figure 2 In one embodiment of the present invention, the unloading mechanism 2 and the loading position 7 are both located on the extension line of the cavity formed between the two long clamping plates 201 and the two short clamping plates 202, and the unloading mechanism 2 and the loading position 7 are located on both sides of the perforated compression test fixture 20. This facilitates the disassembly and installation of the specimen 10.

[0063] Please continue reading Figure 2 In one embodiment of the present invention, the unloading mechanism 2 includes a horizontally movable unloading plate 21, which can be inserted into a cavity formed between two long clamping plates 201 and two short clamping plates 202 to push the specimen 10 out of the cavity formed between the two long clamping plates 201 and two short clamping plates 202. This facilitates the disassembly of the specimen 10.

[0064] Please continue reading Figure 2In one embodiment of the present invention, the positioning mechanism 1 includes a movable first movable baffle 11 and a movable baffle 12. The first movable baffle 11 is used to fix with the long clamping plate 201 and the short clamping plate 202 on one side, and the second movable baffle 12 is used to fix with the long clamping plate 201 and the short clamping plate 202 on the other side. This facilitates the fixation of the specimen 10.

[0065] Please continue reading Figure 2 and Figure 4 In one embodiment of the present invention, both the first movable baffle 11 and the second movable baffle 12 are provided with two vertically oriented first protrusions 13, and the top surface of each long clamp 201 and short clamp 202 is provided with a first groove 205, the first protrusions 13 being inserted into the first grooves 205. Thus, the cooperation between the first protrusions 13 and the first grooves 205 is used to fix the specimen 10.

[0066] Please continue reading Figure 3 and Figure 4 In one embodiment of the present invention, each long clamping plate 201 and short clamping plate 202 is provided with a second groove 206 on its side, and the gripper 3 is provided with four second protrusions 31. By utilizing the cooperation of the second groove 206 and the second protrusions 31, the gripper 3 can clamp the opening compression test fixture 20.

[0067] Please continue reading Figure 2 In one embodiment of the present invention, the above-mentioned automatic loading and unloading system further includes a movable stop 8, which limits the insertion of the test specimen 10 when a new test specimen 10 is installed. This helps to ensure that the test specimen 10 is installed in place.

[0068] Furthermore, embodiments of the present invention also provide an automatic loading and unloading method for an open-hole compression test fixture, applicable to the automatic loading and unloading system mentioned in any of the above embodiments, comprising:

[0069] When disassembling specimen 10, the following steps should be performed:

[0070] Step S11: Use the robotic arm 4 to drive the gripper 3 to transfer the perforated compression test fixture 20 holding the specimen 10 from the first preset position to the second preset position;

[0071] Step S12: Use the two first protrusions 13 of the first movable baffle 11 to insert into the two first grooves 205 of the long clamping plate 201 and the short clamping plate 202 on one side to fix the opening compression test fixture 20.

[0072] Step S13: Use the robotic arm 4 to drive the screw gun 41 to loosen all the fasteners 204 of the opening compression test fixture 20;

[0073] Step S14: Insert the unloading plate 21 into the cavity formed between the two long clamping plates 201 and the two short clamping plates 202 to push the specimen 10 out of the cavity formed between the two long clamping plates 201 and the two short clamping plates 202, so as to disassemble the specimen 10.

[0074] Step S16: After the specimen 10 is disassembled, the robotic arm 4 drives the purging tool 5 to purge the pore compression test fixture 20.

[0075] When installing specimen 10, perform the following steps:

[0076] Step S21: Use the robotic arm 4 to drive the adsorption tool 6 to place the new sample 10 in the loading position 7;

[0077] Step S22: Using the robotic arm 4 to drive the gripper 3, push the specimen 10 in the loading position 7 into the cavity formed between the two long clamping plates 201 and the two short clamping plates 202.

[0078] Step S23: Insert the two first protrusions 13 of the second movable baffle 12 into the two first grooves 205 of the long clamping plate 201 and the short clamping plate 202 on the other side to clamp the opening compression test fixture 20.

[0079] Step S24: Use the robotic arm 4 to drive the screw gun 41 to tighten all the fasteners 204 of the opening compression test fixture 20;

[0080] Step S25: Use the robotic arm 4 to drive the gripper 3 to transfer the opening compression test fixture 20 to the first preset position.

[0081] It is understood that the method embodiments provided in this invention and the system embodiments described above belong to the same inventive concept, and therefore have the same beneficial effects, which will not be elaborated here.

[0082] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0083] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An automatic loading and unloading system for an open-hole compression test fixture, characterized in that, It includes a positioning mechanism (1), an unloading mechanism (2), a gripper (3) and a robotic arm (4), wherein the robotic arm (4) is used to drive the gripper (3) to pick up and hold the specimen (10) in the perforated compression test fixture (20); The perforated compression test fixture (20) includes two long clamping plates (201), two short clamping plates (202), and two support plates (203). One of the long clamping plates (201), one of the short clamping plates (202), and one of the support plates (203) are fixed to each other by fasteners (204). Another long clamping plate (201), another short clamping plate (202), and another support plate (203) are fixed to each other by fasteners (204). The two long clamping plates (201) and the two short clamping plates (202) are used to clamp the specimen (10) made of fiber composite material. The positioning mechanism (1) is used to position the perforated compression test fixture (20) by abutting against the sides of the long clamp (201) and the short clamp (202); The unloading mechanism (2) is used to remove the specimen (10) from between the two long clamps (201) and between the two short clamps (202); It also includes an adsorption tool (6) and a loading station (7). The robotic arm (4) is used to drive the adsorption tool (6) to adsorb the new specimen (10) and transfer it to the loading station (7). The loading station (7) is used to place the new specimen (10). The unloading mechanism (2) and the loading position (7) are both located on the extension line of the cavity formed between the two long clamping plates (201) and between the two short clamping plates (202). The unloading mechanism (2) and the loading position (7) are located on both sides of the opening compression test fixture (20). The unloading mechanism (2) includes a horizontally movable unloading plate (21) that can be inserted into a cavity formed between the two long clamping plates (201) and between the two short clamping plates (202) to push the specimen (10) out of the cavity formed between the two long clamping plates (201) and between the two short clamping plates (202); The positioning mechanism (1) includes a movable first movable baffle (11) and a second movable baffle (12). The first movable baffle (11) is used to fix with the long clamp (201) and the short clamp (202) on one side, and the second movable baffle (12) is used to fix with the long clamp (201) and the short clamp (202) on the other side. The first movable baffle (11) and the second movable baffle (12) are each provided with two vertical first protrusions (13), and the top surface of each of the long clamp (201) and the short clamp (202) is provided with a first groove (205). The first protrusions (13) are used to insert into the first groove (205). Each of the long clamping plates (201) and the short clamping plates (202) has a second groove (206) on its side, and the gripper (3) has four second protrusions (31). By utilizing the cooperation of the second grooves (206) and the second protrusions (31), the gripper (3) can hold the opening compression test fixture (20).

2. The automatic loading and unloading system according to claim 1, characterized in that, It also includes a purging tool (5), the robotic arm (4) being used to drive the purging tool (5) to purge the perforated compression test fixture (20) after the test piece (10) is removed.

3. The automatic loading and unloading system according to claim 2, characterized in that, It also includes a movable stop (8) which limits the insertion of the test piece (10) when a new test piece (10) is installed.

4. An automatic loading and unloading method for an open-hole compression test fixture, characterized in that, Applied to the automated loading and unloading system as described in claim 3, comprising: When disassembling the specimen (10), the following steps are performed: Step S11: Using the robotic arm (4) to drive the gripper (3) to transfer the perforated compression test fixture (20) holding the specimen (10) from the first preset position to the second preset position; Step S12: Use the two first protrusions (13) of the first movable baffle (11) to insert into the two first grooves (205) of the long clamp (201) and the short clamp (202) on one side to fix the opening compression test fixture (20); Step S13: Use the robotic arm (4) to drive the screw gun (41) to loosen all the fasteners (204) of the opening compression test fixture (20); Step S14: Insert the unloading plate (21) into the cavity formed between the two long clamps (201) and the two short clamps (202) to push the test piece (10) out of the cavity formed between the two long clamps (201) and the two short clamps (202) to disassemble the test piece (10); Step S16: After the specimen (10) is disassembled, the robotic arm (4) drives the purging tool (5) to purge the perforated compression test fixture (20); When installing the test piece (10), the following steps are performed: Step S21: Use the robotic arm (4) to drive the adsorption tool (6) to place the new specimen (10) in the loading position (7); Step S22: Using the robotic arm (4) to drive the gripper (3) to push the specimen (10) in the loading position (7) into the cavity formed between the two long clamping plates (201) and the two short clamping plates (202); Step S23: Insert the two first protrusions (13) of the second movable baffle (12) into the two first grooves (205) of the long clamping plate (201) and the short clamping plate (202) on the other side to clamp the opening compression test fixture (20); Step S24: Use the robotic arm (4) to drive the screw gun (41) to tighten all the fasteners (204) of the opening compression test fixture (20); Step S25: Use the robotic arm (4) to drive the gripper (3) to transfer the opening compression test fixture (20) to the first preset position.

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