Positive and negative bending testing machine with automatic bent core changing function

Abstract

A forward and reverse bending testing machine with an automatic bent core changing function comprises a base, a sample fixing seat is fixedly arranged on the base, a forward bending driving device and a reverse bending driving device are horizontally arranged on the two sides of the sample fixing seat on the base respectively, and the forward bending driving device and the reverse bending driving device are oppositely arranged. An output shaft of the forward bending driving device is connected with a connecting base, a wedge groove is formed in the upper surface of the connecting base, the width of the wedge groove is gradually decreased from top to bottom, a bending core is arranged on the connecting base, a guide positioning wedge block matched with the wedge groove is fixedly arranged on the side face of the bending core, and a clamping base is fixedly arranged on the upper surface of the bending core. And a mechanical gripper matched with the clamping seat is arranged above the base. According to the utility model, the bent core is automatically replaced by the mechanical gripper, and the bent core is fixed with the wedge groove of the connecting seat through the guide positioning wedge block, so that the strength of manual operation is greatly reduced, and the test efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical field especially, and relates to the positive and negative bending test technology of screw thread steel, and particularly to a positive and negative bending testing machine with automatic bending core replacement function. BACKGROUND

[0002] The positive and negative bending testing machine is mainly used for normal temperature bending test of screw thread steel and other products produced by the steel plant, uses bending core to bend the sample 90 degrees in positive direction, then bends 20 degrees in reverse direction, and judges whether the product is qualified by observing the surface state of the sample. SUMMARY

[0003] The utility model discloses a positive and negative bending testing machine with automatic bending core replacement function, which solves the technical problems of time-consuming and laborious manual bending core replacement and low test efficiency in the prior art.

[0004] The utility model discloses a positive and negative bending testing machine with automatic bending core replacement function, which solves the technical problems of time-consuming and laborious manual bending core replacement and low test efficiency in the prior art.

[0005] Further, the two sides of the clamping seat are respectively provided with clamping blocks, and the side surface of the mechanical gripper is provided with clamping grooves matched with the clamping blocks.

[0006] Further, the positive bending driving device and the reverse bending driving device are hydraulic cylinders.

[0007] Compared with the prior art, the utility model has positive and obvious effects. The positive and negative bending testing machine with automatic bending core replacement function of the utility model automatically replaces the bending core through the mechanical gripper, and the bending core is fixed through the guide positioning wedge block and the wedge groove of the connecting seat, so that the strength of manual operation is greatly reduced, and the test efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0008] Figure 1 It is the three-dimensional schematic view of the positive and negative bending testing machine with automatic bending core replacement function of the utility model.

[0009] Figure 2 It is a top view schematic diagram of the positive and reverse bending testing machine with the automatic bending core replacing function.

[0010] Figure 3 It is a perspective schematic diagram of the bending core, the connecting seat and the mechanical gripper in the positive and reverse bending testing machine with the automatic bending core replacing function.

[0011] Figure 4 It is a side view schematic diagram of the bending core, the connecting seat and the mechanical gripper in the positive and reverse bending testing machine with the automatic bending core replacing function.

[0012] Figure 5 It is Figure 4 A-A sectional view schematic diagram.

[0013] Figure 6 It is Figure 4 B-B sectional view schematic diagram.

[0014] Figure 7 It is a front view schematic diagram of the bending core, the connecting seat and the mechanical gripper in the positive and reverse bending testing machine with the automatic bending core replacing function. DETAILED DESCRIPTION

[0015] The utility model will be further described below in combination with embodiments, but the utility model is not limited to the embodiments, and any similar changes of the utility model should be included in the protection scope of the utility model. The use of the directions such as upper, lower, front, rear, left, right, middle, inner and outer in the utility model is only for the convenience of clear description, and not for the limitation of the technical scheme of the utility model.

[0016] As Figures 1-7 shown, the utility model discloses a positive and reverse bending testing machine with the automatic bending core replacing function, including base 1, the fixed setting of sample fixed seat 2 is arranged on base 1, the horizontal setting of positive bending driving device 3 and reverse bending driving device 4 is arranged on base 1 at the both sides of sample fixed seat 2, and positive bending driving device 3 and reverse bending driving device 4 are oppositely arranged, and the output shaft of positive bending driving device 3 is connected with connecting seat 5, and the upper surface of connecting seat 5 is provided with wedge groove 6, and the width of wedge groove 6 decreases from top to bottom, and bending core 7 is arranged on connecting seat 5, and the side of bending core 7 is fixedly provided with the guide positioning wedge block 12 matched with wedge groove 6, and the upper surface of bending core 7 is fixedly provided with clamping seat 8, and the upper of base 1 is provided with the mechanical gripper 9 matched with clamping seat 8.

[0017] Further, the both sides of clamping seat 8 are provided with clamping block 10, and the side of mechanical gripper 9 is provided with the clamping groove 11 matched with clamping block 10.

[0018] Further, the positive bending driving device 3 and the reverse bending driving device 4 are hydraulic cylinders.

[0019] Specifically, the specific structure and principle of the sample fixing seat 2, the positive bending driving device 3, the reverse bending driving device 4, the mechanical gripper 9 and other components in the embodiment and other unexplained places all adopt the known scheme in the prior art, and those skilled in the art are all aware of it, which will not be repeated here.

[0020] Working principle of the embodiment:

[0021] The sample 13 is fixed on the sample fixing seat 2, when the bending core 7 is installed, the mechanical gripper 9 positions the clamping block 10 on the clamping seat 8 through the clamping groove 11 and clamps the clamping seat 8, carries the bending core 7 from the bending core frame to the top of the positive and reverse bending tester, the mechanical gripper 9 is lowered to a certain height, the guide positioning wedge block 12 of the bending core 7 enters the wedge groove 6 of the connecting seat 5 for positioning, then the mechanical gripper 9 releases the clamping jaw, the bending core 7 falls by gravity, the guide positioning wedge block 12 falls to the bottom of the wedge groove 6, as shown in the figure, at this time, there may be a certain gap d between the side surface of the bending core 7 and the connecting seat 5, then the positive bending driving device 3 drives the bending core 7 to advance and contact the sample 13 to generate a pushing force, pushes the bending core 7 to slide towards the connecting seat 5 until the gap d is eliminated, the installation of the bending core 7 is completed, and then the test can be continued. Figure 6

[0022] When the bending core 7 is removed, the positive bending driving device 3 is retreated to zero position, the mechanical gripper 9 positions the clamping block 10 on the clamping seat 8 through the clamping groove 11 and clamps the clamping seat 8, and then the clamping seat 8 is lifted upwards, and then the guide positioning wedge block 12 is separated from the wedge groove 6, and the bending core 7 is separated from the connecting seat 5, and then the bending core 7 is carried to the bending core frame, and the action of removing the bending core 7 is completed.

[0023] The positive and reverse bending tester with automatic bending core replacement function of the utility model is automatically replaced by the mechanical gripper 9, the bending core 7 is fixed through the guide positioning wedge block 12 and the wedge groove 6 of the connecting seat 5, the strength of manual operation is greatly reduced, and the efficiency of the test is improved.​

Claims

1. A positive and reverse bending tester having an automatic bending core replacement function, characterized by, The base is provided with a sample fixing seat, and the base is provided with a positive bending driving device and a reverse bending driving device on both sides of the sample fixing seat.

2. The positive and reverse bending tester with automatic bending core replacement function according to claim 1, characterized in that, The two sides of the clamping seat are provided with clamping blocks, and the side surface of the mechanical gripper is provided with clamping grooves matched with the clamping blocks.

3. The positive and reverse bending tester with automatic bending core replacement function according to claim 1, characterized in that, The positive bending driving device and the reverse bending driving device are hydraulic cylinders.

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