Automatic bent core replacing mechanism for bending testing machine

Abstract

An automatic bent core replacing mechanism for a bending testing machine comprises a flange, a first sliding groove is formed in the end face of one end of the flange, a bent core guiding base is arranged in the first sliding groove, a driving device is arranged at the other end of the flange, and the power output end of the driving device is connected with the bent core guiding base. The bent core guide seat is connected with a bent core connecting rod through a limiting structure, a second sliding groove matched with the bent core connecting rod is formed in the position, below the first sliding groove, in the flange, the lower end of the bent core connecting rod is connected with a bent core, and a mechanical arm used for grabbing the bent core connecting rod is arranged on one side of the flange. According to the utility model, the bent core connecting rod is grabbed by the manipulator to be fixed with the bent core guide seat, and then the bent core connecting rod is driven by the driving device to enter the flange to be fixed, so that the bent core of the bending testing machine is automatically replaced, and the labor intensity of workers is greatly reduced while the testing efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of machinery, in particular to a bending test device, in particular to an automatic bending core changing mechanism for a bending test machine. Background Art

[0002] The three-point bending tester is mainly used for room temperature bending tests on medium and thick plates, rebar and other products produced by steel mills. The bending tester includes a power mechanism, which drives the bending core to perform bending tests on the products. In the past, manual loading was used to carry out bending tests; in recent years, with the popularization of automation, the manual loading has been changed to automatic loading by robots, which has improved the test efficiency. In the prior art, as the specifications of the specimens increase, the specifications of the corresponding bending cores also increase, which requires frequent replacement of the bending cores during the test. However, the efficiency of manual replacement of the bending cores is very low, and the prior art cannot realize automatic replacement of the bending cores for the test, resulting in the inability to further improve the test efficiency. Summary of the invention

[0003] The utility model aims to provide an automatic bending core replacement mechanism for a bending test machine, which is intended to solve the technical problem in the prior art that the bending core for the test cannot be automatically replaced.

[0004] The utility model discloses an automatic bending core changing mechanism for a bending testing machine, comprising a flange, a first slide groove is arranged in an end face of one end of the flange, the first slide groove is parallel to the length direction of the flange, a bending core guide seat is arranged in the first slide groove, the bending core guide seat and the flange form a sliding pair parallel to the length direction of the first slide groove, a driving device is arranged at the other end of the flange, a power output end of the driving device extends into the flange and is connected to the bending core guide seat, a bending core connecting rod is connected to the bending core guide seat through a limiting structure, a second slide groove adapted to the bending core connecting rod is arranged in the flange below the first slide groove, the second slide groove is parallel to the first slide groove, a bending core is connected to the lower end of the bending core connecting rod, and a manipulator for grabbing the bending core connecting rod is arranged on one side of the flange.

[0005] Furthermore, the driving device is a hydraulic cylinder.

[0006] Furthermore, the limiting structure includes two parallel support seats fixedly arranged at the front end of the bending core guide seat, and the upper and lower parts of the facing sides between the two support seats are respectively provided with a first inclined surface and a third inclined surface, the two side surfaces of the upper end of the bending core connecting rod are respectively provided with second inclined surfaces matching with the first inclined surfaces on both sides, and the bending core connecting rod is provided with a fourth inclined surface matching with the third inclined surfaces on both sides on the lower side of the second inclined surface, the bottom surface of the flange is set as the first loading surface, and the bending core connecting rod is provided with a second loading surface matching with the first loading surface on the lower side of the fourth inclined surface.

[0007] Furthermore, the flange is composed of an upper flange, a middle flange and a lower flange connected together.

[0008] Compared with the prior art, the utility model has a positive and obvious effect. The utility model uses a manipulator to grab the bending core connecting rod and fix it with the bending core guide seat, and then drives the bending core connecting rod into the flange and fixes it through a driving device, thereby realizing the automatic replacement of the bending core of the bending test machine, improving the efficiency of the test, and greatly reducing the labor intensity of manual labor. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 The utility model is a three-dimensional schematic diagram of an automatic bending core changing mechanism for a bending testing machine.

[0010] Figure 2 The utility model is a side view schematic diagram of an automatic bending core changing mechanism for a bending testing machine.

[0011] Figure 3 The utility model is a front view schematic diagram of an automatic bending core changing mechanism for a bending testing machine.

[0012] Figure 4 for Figure 3 Schematic cross-sectional view of . DETAILED DESCRIPTION

[0013] The present invention is further described below in conjunction with an embodiment, but the present invention is not limited to the embodiment. Any similar structure and similar changes of the present invention should be included in the protection scope of the present invention. The use of directions such as up, down, front, back, left, and right in the present invention is only for the convenience of clear description and is not a limitation on the technical solution of the present invention.

[0014] like Figure 1-Figure 4 As shown, an automatic bending core changing mechanism for a bending testing machine of the utility model comprises a flange 1, a first slide groove 2 is arranged in an end face of one end of the flange 1, the first slide groove 2 is parallel to the length direction of the flange 1, a bending core guide seat 3 is arranged in the first slide groove 2, the bending core guide seat 3 and the flange 1 form a sliding pair parallel to the length direction of the first slide groove 2, a driving device 4 is arranged at the other end of the flange 1, a power output end 11 of the driving device 4 extends into the flange 1 and is connected to the bending core guide seat 3, a bending core connecting rod 5 is connected to the bending core guide seat 3 through a limiting structure, a second slide groove 6 adapted to the bending core connecting rod 5 is arranged in the flange 1 below the first slide groove 2, the second slide groove 6 is parallel to the first slide groove 2, a bending core 7 is connected to the lower end of the bending core connecting rod 5, and a manipulator (not shown in the figure) for grabbing the bending core connecting rod 5 is arranged on one side of the flange 1.

[0015] Furthermore, the driving device 4 is a hydraulic cylinder.

[0016] Furthermore, the limiting structure includes two parallel support seats 8 fixedly arranged at the front end of the bending core guide seat 3, and the upper and lower parts of the facing sides between the two support seats 8 are respectively provided with a first inclined surface 9 and a third inclined surface 15, and the two side surfaces of the upper end of the bending core connecting rod 5 are respectively provided with a second inclined surface 10 matching with the first inclined surfaces 9 on both sides, and the bending core connecting rod 5 is provided with a fourth inclined surface 16 matching with the third inclined surfaces 15 on both sides on the lower side of the second inclined surface 10, the bottom surface of the flange 1 is set as a first loading surface 17, and the bending core connecting rod 5 is provided with a second loading surface 18 matching with the first loading surface 17 on the lower side of the fourth inclined surface 16.

[0017] Furthermore, the flange 1 is composed of an upper flange 12 , a middle flange 13 , and a lower flange 14 .

[0018] Specifically, the manipulator, hydraulic cylinder, etc. in this embodiment all adopt well-known solutions in the prior art, which are well known to those skilled in the art and will not be described in detail here.

[0019] The working principle of this embodiment:

[0020] When in use, the flange 1 is used to connect with the telescopic end of the bending tester, and the telescopic end of the bending tester drives the flange 1 to move up and down, thereby driving the bending core 7 to perform a bending test on the workpiece.

[0021] When the bending core 7 is installed for the first time, the power output end of the driving device 4 pushes the bending core guide seat 3 along the first slide groove 2 to extend outwardly from the flange 1. Figure 1 As shown, at the same time, the manipulator grabs the bending core connecting rod 5 and removes it from the bending core frame, and transports it to the front of the bending testing machine. The lower end of the bending core connecting rod 5 is connected to the bending core 7. The manipulator puts the bending core connecting rod 5 into the bending core guide seat 3 and releases it. The bending core connecting rod 5 slides between the two support seats 8 along the first inclined surface 9. The first inclined surface 9 and the second inclined surface 10 cooperate to limit the bending core connecting rod 5 and the bending core guide seat 3. Then, the power output end 11 of the driving device 4 drives the bending core guide seat 3 and the bending core connecting rod 5 along the first slide groove 2 and the second slide groove 6 into the flange 1. The bending core connecting rod 5 is fixed to the flange 1 by the limit of the second slide groove 6 and the bending core guide seat 3, and the installation of the bending core 7 is completed. When the bending core 7 reaches the designated test position, the test starts. After the bending core 7 contacts the specimen, the bending core connecting rod 5 moves upward with the bending core 7, and the fourth inclined surface 16 slides upward along the third inclined surface 15 until the second loading surface 18 contacts the first loading surface 17. The whole mechanism starts to bear the test load and the formal bending test begins.

[0022] When the bending core 7 needs to be replaced, the power output end of the driving device 4 drives the bending core guide seat 3 to extend out of the flange 1, and the manipulator clamps the bending core connecting rod 5 and removes it before installing a new bending core 7. The installation process is the same as above.

[0023] The utility model utilizes a manipulator to grab the bending core connecting rod 5 and fix it with the bending core guide seat 3, and then drives the bending core connecting rod 5 to enter the flange 1 and fix it through the driving device 4, thereby realizing the automatic replacement of the bending core 7 of the bending test machine, improving the efficiency of the test and greatly reducing the labor intensity of manual labor.

Claims

1. An automatic bending core changing mechanism for a bending testing machine, characterized in that: It includes a flange, a first slide groove is provided in the end face of one end of the flange, the first slide groove is parallel to the length direction of the flange, a bending core guide seat is provided in the first slide groove, the bending core guide seat and the flange constitute a sliding pair parallel to the length direction of the first slide groove, a driving device is provided at the other end of the flange, the power output end of the driving device extends into the flange and is connected to the bending core guide seat, a bending core connecting rod is connected to the bending core guide seat through a limiting structure, a second slide groove adapted to the bending core connecting rod is provided in the flange below the first slide groove, the second slide groove is parallel to the first slide groove, the lower end of the bending core connecting rod is connected to a bending core, and a manipulator for grabbing the bending core connecting rod is provided on one side of the flange.

2. The automatic bending core changing mechanism for a bending testing machine according to claim 1, characterized in that: The driving device is a hydraulic cylinder.

3. The automatic bending core changing mechanism for a bending testing machine according to claim 1, characterized in that: The limiting structure includes two parallel support seats fixedly arranged at the front end of the bending core guide seat, and the upper and lower parts of the facing sides between the two support seats are respectively provided with a first inclined surface and a third inclined surface, and the two side surfaces of the upper end of the bending core connecting rod are respectively provided with second inclined surfaces matching with the first inclined surfaces on both sides, and the bending core connecting rod is provided with a fourth inclined surface matching with the third inclined surfaces on both sides at the lower side of the second inclined surface, the bottom surface of the flange is set as the first loading surface, and the bending core connecting rod is provided with a second loading surface matching with the first loading surface at the lower side of the fourth inclined surface.

4. The automatic bending core changing mechanism for a bending testing machine according to claim 1, characterized in that: The flange is composed of an upper flange, a middle flange and a lower flange.

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