An automatic disassembly mechanism for a test fixture

Abstract

The present invention relates to an automatic disassembly mechanism for a test fixture, which comprises a fixed frame, a plurality of support rods, a robot switching disk, a lateral pushing assembly, a plurality of ejecting assemblies, and a plurality of hook units. Among them, the plurality of support rods are vertically arranged below the fixed frame, the robot switching disk is arranged above the fixed frame, the lateral pushing assembly is connected to the fixed frame, the plurality of ejecting assemblies are connected to the lateral pushing assembly and can press against a tapered nut inside the test pipe fitting, so that the tapered nut is separated from the test pipe fitting, and the plurality of hook units are connected to the lateral pushing assembly. The hook units are horizontally displaced under the drive of the lateral pushing assembly and hooked on the upper part of the test tooling. Compared with the prior art, the automatic disassembly mechanism for the test fixture in the present invention can match the fully automated disassembly process, so as to realize the disassembly of the detection tooling and the blanking of parts in large quantities and with high precision.

Description

Technical Field

[0001] The present invention relates to a disassembly mechanism, and more particularly to an automatic disassembly mechanism for a test fixture. Background Art

[0002] In the current industrial parts inspection field, it is necessary to load the parts to be tested into the inspection tooling, and then place the inspection tooling at the corresponding position on the inspection platform to complete the loading process. After that, the inspection tooling and the parts to be tested are locked through a locking mechanism to complete the inspection process. After the inspection process is completed, the inspection tooling and the parts to be tested are taken off the inspection platform as a whole and placed in the storage area to complete the unloading process.

[0003] In the process of mechanical property testing of pipe fittings parts, the current loading and unloading processes are both manual operations. The inspection tooling and the parts to be tested are both made of metal materials and have a large weight. At the same time, in the unloading process, first, the bolts fixed on the pipe fittings need to be unscrewed, and then the conical nuts matching the bolts in the pipe fittings parts need to be taken out manually. After that, the upper part 7 of the test tooling can be separated from the lower part 12 of the test tooling to realize the disassembly process of the test tooling. However, when faced with more than one hundred parts to be tested, it is impossible to achieve through manual operation, and it is even more impossible to ensure the accuracy of the test.

[0004] Therefore, how to achieve high-precision and automated disassembly of inspection tooling and parts unloading in large quantities is a technical problem that urgently needs to be solved in the industrial parts inspection field. Summary of the Invention

[0005] The purpose of the present invention is to overcome the defects of the above-mentioned existing technologies and provide an automatic disassembly mechanism for a test fixture. By designing the automatic disassembly mechanism for the test fixture, it can match the fully automated disassembly process to achieve high-precision and automated disassembly of inspection tooling and parts unloading in large quantities.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] The automatic disassembly mechanism for a test fixture in the present invention includes a fixed frame, a plurality of support rods, a robot switching disk, a lateral pushing component, a plurality of ejecting components, and a plurality of hook units. Specifically:

[0008] A plurality of support rods are vertically arranged below the fixed frame, and the support rods stand on the inspection platform to support the fixed frame;

[0009] The robot switching disk is arranged above the fixed frame to achieve quick connection with an industrial robot;

[0010] The lateral pushing component is connected to the fixed frame;

[0011] A plurality of ejection components are connected to the lateral pushing component and can press against the tapered nut inside the test pipe fitting, so that the tapered nut is separated from the test pipe fitting;

[0012] A plurality of hook units are connected to the lateral pushing component. After the tapered nut is separated from the test pipe fitting, the hook units are horizontally displaced under the drive of the lateral pushing component and hooked on the upper part of the test tooling.

[0013] Further, the ejection component includes an ejection component main body, a transfer rod, and a pressing rod;

[0014] The transfer rod penetrates through the ejection component main body and is screwed to the pressing rod;

[0015] The lower end of the pressing rod can press against the tapered nut on the inner wall of the test pipe fitting.

[0016] Further, a hollow area is provided at the top of the fixing frame.

[0017] Further, the tool disassembly and tightening gun can pass through the hollow area from top to bottom and be connected to the upper end of the transfer rod.

[0018] The torsional force output by the tool disassembly and tightening gun is converted into an axial pushing force to press against the tapered nut on the inner wall of the test pipe fitting.

[0019] Further, a thrust bearing is provided between the upper end of the ejection component main body and the transfer rod. The outer ring of the thrust bearing is connected to the ejection component main body, and the inner ring of the thrust bearing is connected to the upper end of the transfer rod.

[0020] Further, a ring-shaped flange is provided at the upper end of the transfer rod, and the flange is wrapped in the ejection component main body.

[0021] In this way, the transfer rod is limited in the ejection component main body and only has an axial rotational freedom.

[0022] Further, a positioning pin is provided below the support rod, and the positioning pin is matched with the guide hole provided on the test tooling.

[0023] Further, the output rod of the lateral pushing component is horizontally connected to the fixing frame, and the main body of the lateral pushing component is connected to the ejection component and the hook unit.

[0024] Further, a connecting plate is provided on the main body of the lateral pushing component, and a plurality of ejection components and hook units are both connected to the connecting plate.

[0025] Furthermore, two lateral pushing components are symmetrically arranged, and two rows of hook units are correspondingly arranged thereon, so as to realize the clamping action from both sides to the middle. The hook units are used to hook onto the upper part of the test fixture while performing lateral clamping, so that the automatic disassembly mechanism of the test fixture can be firmly combined with the upper part of the test fixture that is hooked. Then, the mechanical arm of the industrial robot is used to vertically lift the upper part of the test fixture, so as to realize the separation of the upper part of the test fixture from the lower part of the test fixture, and thus realize the disassembly process of the test fixture.

[0026] Furthermore, the lateral pushing components are all servo cylinders or servo electric cylinders.

[0027] Compared with the prior art, the present invention has the following technical advantages:

[0028] 1) The automatic disassembly mechanism of the test fixture in this technical solution can match the fully automated disassembly process, so as to realize the disassembly of the detection tooling and the blanking of parts in large quantities and with high precision automation.

[0029] 2) The automatic disassembly mechanism of the test fixture in this technical solution realizes the automatic disassembly of the taper nut, and at the same time is highly adaptable to match the upper tooling, so as to realize the vertical lifting of the upper tooling, realize the separation of the upper part of the test fixture from the lower part of the test fixture, and thus realize the disassembly process of the test fixture, avoiding manual participation and significantly improving the disassembly efficiency.

[0030] 3) The hook units are used to hook onto the upper part of the test fixture while performing lateral clamping, so that the automatic disassembly mechanism of the test fixture can be firmly combined with the upper part of the test fixture that is hooked, so as to realize the vertical and stable lifting of the upper tooling.

[0031] 4) Compared with manual disassembly of the upper tooling, not only the efficiency is improved, but also the parts after the test avoid destructive operations such as manual disassembly and hammering, ensuring that all the damaged parts in the test parts are generated during the fatigue test process, and improving the rigor of the test data. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is a schematic structural diagram of the automatic disassembly mechanism of the test fixture in the present invention;

[0033] Figure 2 is a schematic structural diagram of the ejecting component in the present invention;

[0034] Figure 3 is a schematic structural diagram of the function of the tooling disassembly tightening gun in the present invention;

[0035] Figure 4 is a schematic diagram of the installation position of the automatic disassembly mechanism of the test fixture in the present invention;

[0036] Figure 5Schematic diagram of the fixing structure for the test pipe fitting in the present invention.

[0037] In the figure: 1, support rod; 2, fixing frame; 3, ejecting assembly; 4, lateral pushing assembly; 5, hook unit; 6, fixing frame; 7, upper part of the test tooling; 8, positioning pin; 9, tooling disassembly and tightening gun; 10, test pipe fitting; 11, tapered nut; 12, lower part of the test tooling; 21, hollowed-out area; 31, main body of the ejecting assembly; 32, transfer rod; 33, pressing rod; 34, annular flange. Detailed implementation manners

[0038] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0039] Embodiment 1

[0040] The automatic disassembly mechanism of the test fixture in this embodiment includes a fixing frame 2, a plurality of support rods 6, a robot switching disk 1, a lateral pushing assembly 4, a plurality of ejecting assemblies 3, and a plurality of hook units 5. Refer to Figure 1 .

[0041] A plurality of support rods 6 are vertically arranged below the fixing frame 2. The support rod 1 stands on the detection platform to support the fixing frame 1. A positioning pin 8 is provided below the support rod 6, and the positioning pin 8 is matched with the guiding hole opened on the test tooling.

[0042] A hollowed-out area 21 is opened at the top of the fixing frame 6, and the tooling disassembly and tightening gun 9 can pass through the hollowed-out area 21 from top to bottom and be connected to the upper end of the transfer rod 32.

[0043] The robot switching disk 1 is arranged above the fixing frame 2 to achieve rapid connection with the industrial robot.

[0044] The lateral pushing assembly 4 is connected to the fixing frame 2. The output rod of the lateral pushing assembly 4 is horizontally arranged and connected to the fixing frame 2. The body of the lateral pushing assembly 4 is connected to the ejecting assembly 3 and the hook unit 5. A connecting plate is provided on the body of the lateral pushing assembly 4, and a plurality of ejecting assemblies 3 and hook units 5 are both connected to the connecting plate. The lateral pushing assemblies 4 are all servo cylinders or servo electric cylinders.

[0045] A plurality of ejecting assemblies 3 are connected to the lateral pushing assembly 4 and can press against the tapered nut 11 inside the test pipe fitting 10, so that the tapered nut 11 is separated from the test pipe fitting 10. The ejecting assembly 3 includes a main body 31 of the ejecting assembly, a transfer rod 32, and a pressing rod 35. The transfer rod 32 penetrates through the main body 31 of the ejecting assembly and is screwed to the pressing rod 35. The lower end of the pressing rod 35 can press against the tapered nut on the inner wall of the test pipe fitting. Refer to Figure 3 and Figure 4 .

[0046] A plurality of hook units 5 are connected to the lateral pushing assembly 4. After the tapered nut 11 is disengaged from the test pipe fitting 10, the hook units 5 are horizontally displaced under the drive of the lateral pushing assembly 4 and hooked on the upper part 7 of the test tooling.

[0047] The torsional force output by the tooling disassembly tightening gun 9 is converted into an axial driving force to press against the tapered nut on the inner wall of the test pipe fitting. A thrust bearing 33 is provided between the upper end of the ejector assembly main body 31 and the transfer rod 32. The outer ring of the thrust bearing 33 is connected to the ejector assembly main body 31, and the inner ring of the thrust bearing 33 is connected to the upper end of the transfer rod 32. The upper end of the transfer rod 32 is provided with an annular flange 34, and the flange 34 is wrapped in the ejector assembly main body 31. In this way, the transfer rod 32 is limited in the ejector assembly main body 31 and only has an axial rotational freedom. During specific implementation, the lower pressing rod 35 is provided with an internal thread, and the lower end of the transfer rod 32 is provided with an external thread. See Figure 2 。

[0048] During specific implementation, the tooling disassembly tightening gun 9 can pass through the hollow area 21 from top to bottom. First, the bolts on the pipe fitting are disassembled by torque output. Then, the tooling disassembly tightening gun 9 passes through the hollow area 21 from top to bottom again and is connected to the upper end of the transfer rod 32. By the threaded fit between the lower pressing rod 35 and the transfer rod 32, the torsional force output by the tooling disassembly tightening gun 9 is converted into an axial driving force to press against the tapered nut on the inner wall of the test pipe fitting. Two lateral pushing assemblies 4 are symmetrically arranged, and the hook units 5 thereon are also correspondingly arranged in two rows. In this way, the clamping action from both sides to the middle is realized. The hook units 5 are used to hook on the upper part 7 of the test tooling while performing lateral clamping, so that the automatic disassembly mechanism of this test fixture can be firmly combined with the upper part 7 of the test tooling hooked. Then, the upper part 7 of the test tooling is vertically lifted by the robotic arm of the industrial robot, so as to separate the upper part 7 of the test tooling from the lower part 12 of the test tooling, thereby realizing the disassembly process of the test tooling.

[0049] The above description of the embodiments is for the convenience of those of ordinary skill in the art to understand and use the invention. Obviously, those skilled in the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative labor. Therefore, the present invention is not limited to the above embodiments, and the improvements and modifications made by those skilled in the art according to the disclosure of the present invention without departing from the scope of the present invention should be within the protection scope of the present invention.

Claims

1. An automatic disassembly mechanism for a test fixture, characterized in that, it includes: A fixed frame (2): A plurality of support rods (6) are vertically arranged below the fixed frame (2), and the support rods (6) stand on the detection platform to support the fixed frame (2); A robot switching disk (1) is arranged above the fixed frame (2) to achieve quick connection with an industrial robot; A lateral pushing component (4) is connected to the fixed frame (2); A plurality of ejecting components (3) are connected to the lateral pushing component (4), and can press against a tapered nut (11) inside the test pipe fitting (10), so that the tapered nut (11) is disengaged from the test pipe fitting (10); A plurality of hook units (5) are connected to the lateral pushing component (4). After the tapered nut (11) is disengaged from the test pipe fitting (10), the hook units (5) are horizontally displaced under the drive of the lateral pushing component (4) and hooked on the upper part (7) of the test tooling; The ejecting component (3) includes an ejecting component main body (31), a transmission rod (32), and a pressing rod (35); The transmission rod (32) penetrates through the ejecting component main body (31) and is screwed to the pressing rod (35); The lower end of the pressing rod (35) can press against a tapered nut on the inner wall of the test pipe fitting; A hollow area (21) is opened at the top of the fixed frame (2); A tooling disassembly and tightening gun (9) can pass through the hollow area (21) from top to bottom and be connected to the upper end of the transmission rod (32); A positioning pin (8) is arranged below the support rod (6), and the positioning pin (8) matches a guide hole opened on the detection tooling.

2. An automatic disassembly mechanism for a test fixture according to claim 1, characterized in that, A thrust bearing (33) is arranged between the upper end of the ejecting component main body (31) and the transmission rod (32). The outer ring of the thrust bearing (33) is connected to the ejecting component main body (31), and the inner ring of the thrust bearing (33) is connected to the upper end of the transmission rod (32).

3. An automatic disassembly mechanism for a test fixture according to claim 1, characterized in that, The upper end of the transmission rod (32) is provided with an annular flange (34), and the flange (34) is wrapped in the ejecting component main body (31).

4. An automatic disassembly mechanism for a test fixture according to claim 1, characterized in that, The output rod of the lateral pushing component (4) is horizontally arranged and connected to the fixed frame (2), and the body of the lateral pushing component (4) is connected to the ejecting component (3) and the hook unit (5).

5. An automatic disassembly mechanism for a test fixture according to claim 4, characterized in that, A connecting plate is arranged on the body of the lateral pushing component (4), and a plurality of ejecting components (3) and hook units (5) are both connected to the connecting plate.

6. An automatic disassembly mechanism for a test fixture according to claim 1, characterized in that, The lateral pushing components (4) are all servo cylinders or servo electric cylinders.

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