Welding rod impact testing machine

Abstract

The utility model relates to an impact testing machine, belongs to the technical field of welding material testing equipment, and particularly relates to a welding rod impact testing machine which comprises a testing box body, an inclined surface diversion trench arranged at the bottom of the box body, a limiting base table, a pneumatic high-frequency impact testing assembly, a bottom pressure sensing module and a side hanging type electric control box. The limiting base table is provided with a circumferential elastic clamping strip set and a conical locking limiting cap, and the limiting base table is matched with welding rods with different diameters through an elastic clamping and thread locking double fixing mechanism. The bottom pressure sensing module comprises a pressure conduction column and a pressure tester and monitors the bottom pressure change of the welding rod in real time; the pneumatic high-frequency impact test assembly drives an impact head through a cylinder to simulate a high-frequency impact load. According to the utility model, the composite test of the impact resistance and compression resistance of the welding rod is realized, the problems of unstable clamping, single test dimension and low scrap cleaning efficiency of the traditional equipment are solved, and meanwhile, the operation convenience is improved through the centralized control of the touch screen.

Description

Technical Field

[0001] This utility model relates to the technical field of welding material testing equipment, and in particular to a welding electrode impact testing machine. Background Technology

[0002] As a core consumable in the welding process, the impact resistance of welding electrodes directly affects the reliability of welded structures. In the fields of welding equipment manufacturing and materials research and development, it is necessary to simulate the mechanical performance of welding electrodes under extreme working conditions using impact testing machines to evaluate their durability and quality stability. Currently, most specialized equipment for testing the impact performance of welding electrodes adopts a vertical impact loading method, fixing the welding electrode with clamps and applying dynamic loads for testing.

[0003] A search revealed that Chinese patent CN222013848U discloses an impact testing machine for welding electrode production, which uses a pneumatic telescopic rod to drive a fixed clamp (including an anti-slip pad) to hold the welding electrode and uses a spring and a pressure sensor to measure the maximum impact force.

[0004] Based on the above search results and existing technologies, the following findings were made:

[0005] In practical applications, this solution revealed several issues: First, the rigid planar clamping structure of the fixing clamp cannot accommodate the fixing requirements of welding rods with different diameters. For smaller diameter welding rods, the rigid clamping surface is prone to loosening due to insufficient contact area; for larger diameter welding rods, excessive clamping by the pneumatic telescopic rod can easily cause crushing damage to the welding rod surface. Second, the testing dimension is limited—the pressure sensor can only record the peak force at the moment of impact and cannot monitor the axial pressure change at the bottom of the welding rod in real time, making it difficult to assess the welding rod's compressive strength. Finally, the debris removal efficiency is low—the storage drawer lacks a flow guiding structure, allowing debris to easily scatter into the equipment, requiring frequent shutdowns for cleaning.

[0006] The aforementioned problems result in insufficient accuracy of test data and high maintenance costs for existing equipment. In particular, poor clamping stability remains a core challenge restricting test accuracy. Therefore, there is an urgent need for an impact testing machine that can adapt to multiple welding electrode specifications, simultaneously monitor impact and pressure parameters, and efficiently clean debris. Utility Model Content

[0007] To address the aforementioned technical problems, this utility model proposes a welding electrode impact testing machine. Through the coordinated design of the circumferential elastic clamping strip group and the conical locking limit cap in the limiting base, it solves the problems of unstable clamping and incompatibility with multiple specifications of welding electrodes in traditional welding electrode clamps.

[0008] The technical solution to achieve the purpose of this utility model is: a welding electrode impact testing machine, including a test chamber, on which a welding electrode body to be tested is provided, the test chamber has a concave structure, and the inner bottom surface of the test chamber is provided with a sloping guide groove that is inclined forward and downward;

[0009] Also includes;

[0010] A limiting base platform is vertically installed on an inclined guide groove, and the welding rod body is placed downward into the corresponding limiting base platform and fixed.

[0011] A pneumatic high-frequency impact testing assembly is installed on the top of the test chamber and is used to perform reciprocating impact tests on the top of the welding electrode body.

[0012] The limiting base platform includes a base body, the top of which has a tubular mounting groove. A connector is installed on the top of the mounting groove. The welding rod body is inserted into the mounting groove. A frustum-shaped conical locking and limiting cap is threaded onto the connector. The conical locking and limiting cap is fitted downward onto the welding rod body. The conical locking and limiting cap and the connector are threaded together. A circumferential elastic clamping strip group is provided on the inner side of the mounting groove. The circumferential elastic clamping strip group consists of multiple elastic rectangular strips evenly distributed circumferentially. Its inner wall is attached to the outer surface of the welding rod body to form self-adaptive clamping.

[0013] A bottom pressure sensing module is installed inside the test chamber, corresponding to the bottom of the mounting groove.

[0014] The control console is located on the outside of the test chamber and is electrically connected to the bottom pressure sensing module and the pneumatic high-frequency impact test assembly.

[0015] In some embodiments, the bottom pressure sensing module includes a protective sleeve fixed to the top of the test chamber, a pressure tester is provided inside the protective sleeve, and a pressure transmission column extending upward into the mounting groove is provided at the upper end of the pressure tester, with the top of the pressure transmission column abutting against the bottom of the welding rod body inserted into the mounting groove.

[0016] In some embodiments, the pneumatic high-frequency impact testing assembly includes a support plate fixed to the rear top of the test chamber, a cylinder mounted on the support plate, an output rod for downward extension connected to the bottom of the cylinder, and an impact head corresponding to the upper and lower parts of the welding rod connected to the bottom of the output rod.

[0017] In some embodiments, the front end of the test chamber is provided with a collection box located below the corresponding inclined guide channel, and the collection box is an inverted right-angled trapezoidal box.

[0018] In some embodiments, the bottom of the collection box is fitted with a magnetic suction plate for magnetic attraction to the bottom of the test chamber.

[0019] In some embodiments, the control console device includes a side-mounted electrical control box that is tightly attached to the side of the test chamber. The side-mounted electrical control box is detachably connected to the side of the test chamber by bolts. The front wall of the side-mounted electrical control box is hollowed out and a control terminal body is installed inside. The front side of the control terminal body is a touch screen.

[0020] Compared with existing technologies, the significant advantages of this invention are:

[0021] Firstly, this invention solves the problems of unstable clamping and incompatibility with multiple specifications of welding rods in traditional welding rod clamps by using a synergistic design of circumferential elastic clamping strips and a conical locking limit cap in the limiting base platform. Specifically, the circumferentially distributed elastic rectangular strips adaptively conform to the outer wall of the welding rod through flexible clamping force, avoiding surface damage caused by rigid clamping; the conical locking limit cap further locks the welding rod by pressing down with threads, forming a double fixing mechanism to ensure that the welding rod does not shift axially under high-frequency impact, significantly improving the accuracy of test data.

[0022] Secondly, this invention achieves composite mechanical testing of the welding electrode's impact resistance and axial compressive strength by linking the bottom pressure sensing module (protective sleeve / pressure tester / pressure transmission column) with the pneumatic high-frequency impact testing component (cylinder / impact head). The pressure transmission column monitors the pressure changes transmitted from the impact force to the bottom of the welding electrode in real time, providing multi-dimensional data support for the comprehensive performance evaluation of the welding electrode.

[0023] Thirdly, this utility model solves the problem of decreased equipment accuracy caused by debris residue during impact testing through the combination of an inclined guide channel and a magnetic collection box. The inverted right-angled trapezoidal collection box is quickly assembled and disassembled using a magnetic suction plate. Combined with the inclination angle of the inclined guide channel, it achieves thorough and concentrated cleaning of debris, reducing maintenance time and solving the technical problems of poor clamping stability, limited testing dimensions, low debris cleaning efficiency, and cumbersome human-machine interaction in existing welding electrode impact testing machines. Attached Figure Description

[0024] The present invention will be further explained below with reference to the accompanying drawings and embodiments:

[0025] Figure 1 This is a schematic diagram of the isometric view of the electrode impact testing machine provided in one embodiment of the present invention;

[0026] Figure 2 This is a front view of the electrode impact testing machine provided in one embodiment of the present invention;

[0027] Figure 3 This is a half-section diagram of the bottom pressure sensing module installed inside the limiting base platform in one embodiment of the present invention.

[0028] Figure 4This is a half-sectional side view of the inside of the electrode impact testing machine provided in one embodiment of the present invention;

[0029] Figure 5 This is a rear bottom view of the electrode impact testing machine provided in one embodiment of the present invention;

[0030] Figure 6 This is a schematic diagram of the structure of the welding rod body installed inside the limiting base in one embodiment of the present invention.

[0031] Explanation of reference numerals in the attached figures:

[0032] 1. Test chamber; 100. Side-mounted electrical control box; 101. Inclined guide channel; 2. Support plate; 201. Cylinder; 202. Output rod; 203. Impact head; 4. Control end body; 5. Collection box; 501. Magnetic suction plate; 6. Welding electrode body; 7. Protective sleeve; 701. Axial pressure transmission column; 702. Pressure tester; 8. Base body; 801. Conical locking limit cap; 802. Connector; 803. Mounting groove; 804. Circumferential elastic clamping strip assembly. Detailed Implementation

[0033] The present invention will now be described in detail, and the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0034] This utility model provides an improved electrode impact testing machine. The technical solution of this utility model is as follows:

[0035] Figures 1-6 This is the preferred embodiment of the present invention, which is described below in conjunction with the appendix. Figures 1-6 The present invention will be further described below.

[0036] like Figure 1 - Figure 6As shown, a welding electrode impact testing machine includes a test chamber 1, on which a welding electrode body 6 to be tested is mounted. The test chamber 1 has a concave structure, and the inner bottom surface of the test chamber 1 is provided with a downward-sloping guide groove 101. It also includes a limiting base platform, a pneumatic high-frequency impact testing component, a bottom pressure sensing module, and a control console. The limiting base platform is vertically mounted on the inclined guide groove 101, and the welding electrode body 6 is placed downwards and fixed on the corresponding limiting base platform. The pneumatic high-frequency impact testing component is located at the top of the test chamber 1 and is used to perform reciprocating impact testing on the top of the welding electrode body 6. The bottom pressure sensing module is located inside the test chamber 1, corresponding to the bottom of the mounting groove 803. A control console is located on the outer side of the test chamber 1, and the control console is electrically connected to the bottom pressure sensing module and the pneumatic high-frequency impact testing component. Through the coordinated work of the pneumatic high-frequency impact testing component and the bottom pressure sensing module, a composite mechanical test of the welding electrode's impact resistance and axial pressure response is achieved, overcoming the limitations of a single impact test.

[0037] like Figure 3 and Figure 6 As shown, in one embodiment, the limiting base platform includes a base body 8. A tubular mounting groove 803 is formed at the top of the base body 8. A connector 802 is mounted on the top of the mounting groove 803. The welding rod body 6 is inserted into the mounting groove 803. A frustum-shaped conical locking and limiting cap 801 is threaded onto the connector 802. The conical locking and limiting cap 801 is fitted downwards onto the welding rod body 6. The conical locking and limiting cap 801 and the connector 802 are threadedly connected. A circumferential elastic clamping strip group 804 is provided on the inner side of the mounting groove 803. The circumferential elastic clamping strip group 804 is circumferentially evenly distributed. Multiple elastic rectangular strips, with their inner walls conforming to the outer surface of the electrode body 6, form an adaptive clamping mechanism. The circumferential elastic clamping strip group 804 and the conical locking limit cap 801 enable adaptive clamping and fixing of electrode bodies 6 with different diameters, ensuring the stability of the electrode body 6 during impact testing and preventing its shaking from affecting the test results. The elastic clamping strip group 804 disperses stress through a circumferentially distributed flexible clamping force, preventing surface damage to the electrode body 6. The conical locking limit cap 801 and the elastic clamping form a dual fixing mechanism, ensuring no axial displacement of the electrode body 6 under high-frequency impact.

[0038] like Figure 3 and Figure 6As shown, in one embodiment, the bottom pressure sensing module includes a protective sleeve 7 fixed to the top of the test chamber 1. A pressure tester 702 is installed inside the protective sleeve 7. A pressure transmission column 701 extending upward into the mounting groove 803 is provided at the upper end of the pressure tester 702. The top of the pressure transmission column 701 abuts against the bottom of the welding rod body 6 inserted into the mounting groove 803. Through the setting of the pressure transmission column 701 and the pressure tester 702, the pressure change at the bottom of the welding rod body 6 can be monitored in real time during the impact test, providing a basis for the collection and analysis of test data. The protective sleeve 7 isolates external interference, and the pressure transmission column 701 directly transmits the axial pressure data of the welding rod body 6, realizing the synchronous analysis of impact force and compressive strength.

[0039] like Figure 1 - Figure 2 As shown, in one embodiment, the pneumatic high-frequency impact testing assembly includes a support plate 2 fixed to the rear top of the test chamber 1. A cylinder 201 is mounted on the support plate 2. The bottom of the cylinder 201 is connected to an output rod 202 for downward extension. The bottom output end of the output rod 202 is connected to an impact head 203 corresponding to the upper and lower parts of the welding electrode body 6. Through the arrangement of the cylinder 201, the output rod 202 and the impact head 203, a high-frequency reciprocating impact test is achieved on the top of the welding electrode body 6, simulating the impact conditions that the welding electrode may be subjected to during actual use, so as to detect the effect of the welding electrode's impact resistance. The high-frequency impact testing assembly can programmably control the impact frequency and force to accurately simulate the stress environment after welding.

[0040] like Figure 1 , Figure 2 and Figure 4 As shown, in one embodiment, the front end of the test chamber 1 is provided with a collection box 5 located below the corresponding inclined guide channel 101, and the collection box 5 is an inverted right-angled trapezoidal box. Through the setting of the inclined guide channel 101 and the collection box 5, the debris and other impurities generated by the welding rod body 6 during the impact test can flow into the collection box 5 along the inclined guide channel 101, which facilitates the centralized collection and treatment of the waste generated during the test.

[0041] like Figure 4 As shown, in one embodiment, a magnetic suction plate 501 for magnetic attraction to the bottom of the test chamber 1 is installed at the bottom of the collection box 5. The magnetic suction plate 501 enables the collection box 5 to be detachably connected to the test chamber 1, which is convenient for disassembly and cleaning after the collection box 5 is full. At the same time, the magnetic connection ensures the stability of the collection box 5 during normal use. The magnetic connection combines quick disassembly and stable fixation, reducing equipment maintenance downtime.

[0042] like Figure 1 , Figure 2as well as Figure 4 As shown, in one embodiment, the control console includes a side-mounted electrical control box 100 that is tightly attached to the side of the test chamber 1. The side-mounted electrical control box 100 is detachably connected to the side of the test chamber 1 by bolts. The front wall of the side-mounted electrical control box 100 is hollowed out and a control terminal body 4 is installed inside. The front of the control terminal body 4 is a touch screen. Through the setting of the side-mounted electrical control box 100 and the control terminal body 4, the operator can conveniently control the working parameters of the pneumatic high-frequency impact test component, such as impact frequency and impact force, through the touch screen of the control terminal body 4. At the same time, the operator can view the pressure data fed back by the bottom pressure sensing module in real time, which facilitates the precise control and monitoring of the test process. The side-mounted electrical control box integrates impact parameter control and pressure data visualization functions, realizing human-machine interaction and centralized management of the test process.

[0043] The working principle and usage process of this utility model are as follows: First, the welding electrode body 6 is inserted into the mounting groove 803 of the limiting base platform. By rotating the conical locking limiting cap 801, the circumferential elastic clamping strip group 804 is tightly attached to the outer surface of the welding electrode body 6, thus fixing the welding electrode body 6. Next, the operator sets the impact parameters of the pneumatic high-frequency impact test component through the touch screen of the control terminal body 4 of the control console device, and starts the cylinder 201. The cylinder 201 drives the output rod 202 and the impact head 203 to perform a reciprocating impact test on the top of the welding electrode body 6. During the impact process, the pressure transmission column 701 of the bottom pressure sensing module transmits the pressure on the bottom of the welding electrode body 6 to the pressure tester 702. The pressure tester 702 feeds back the data to the control console device, which the operator can view in real time. At the same time, debris and other impurities generated by the impact flow into the collection box 5 along the inclined guide channel 101. After the test is completed, turn off the equipment. If the collection box 5 is full, it can be removed from the test chamber 1 by using the magnetic suction plate 501 for cleaning.

[0044] The technical means disclosed in this utility model are not limited to those described above, but also include technical solutions composed of equivalent substitutions of the above technical features. Matters not covered in this utility model are common knowledge to those skilled in the art.

Claims

1. A welding electrode impact testing machine, comprising a test chamber (1), wherein a welding electrode body (6) to be tested is disposed on the test chamber (1), characterized in that: The test chamber (1) has a concave structure, and the bottom surface of the test chamber (1) is provided with a sloping guide groove (101) that is inclined forward and downward. Also includes; The limiting base platform is vertically installed on the inclined guide groove (101), and the welding rod body (6) is placed downward into the corresponding limiting base platform for fixation; A pneumatic high-frequency impact testing assembly is set on the top of the test chamber (1) and is used to perform reciprocating impact tests on the top of the welding electrode body (6). The limiting base platform includes a base body (8), and a tubular mounting groove (803) is provided on the top of the base body (8). A connector (802) is installed on the top of the mounting groove (803). The welding rod body (6) is inserted into the mounting groove (803). A frustum-shaped conical locking limit cap (801) is threaded onto the connector (802). The conical locking limit cap (801) is sleeved downward onto the welding rod body (6). The conical locking limit cap (801) and the connector (802) are threaded together. A circumferential elastic clamping strip group (804) is provided on the inner side of the mounting groove (803). The circumferential elastic clamping strip group (804) consists of multiple elastic rectangular strips evenly distributed in the circumferential direction. Its inner wall is attached to the outer surface of the welding rod body (6) to form an adaptive clamping. Bottom pressure sensing module, the bottom pressure sensing module is set inside the test chamber (1) and corresponds to the bottom of the mounting groove (803); The test chamber (1) is equipped with a control console device, which is electrically connected to the bottom pressure sensing module and the pneumatic high-frequency impact test component.

2. The electrode impact testing machine according to claim 1, characterized in that: The bottom pressure sensing module includes a protective sleeve (7) fixed to the top of the test chamber (1). A pressure tester (702) is installed inside the protective sleeve (7). A pressure transmission column (701) extending upward into the mounting groove (803) is installed at the upper end of the pressure tester (702). The top of the pressure transmission column (701) abuts against the bottom of the welding rod body (6) inserted into the mounting groove (803).

3. The electrode impact testing machine according to claim 1, characterized in that: The pneumatic high-frequency impact test assembly includes a support plate (2) fixed on the rear side of the top of the test chamber (1), a cylinder (201) is installed on the support plate (2), an output rod (202) for downward extension is connected to the bottom of the cylinder (201), and an impact head (203) corresponding to the upper and lower parts of the electrode body (6) is connected to the bottom of the output rod (202).

4. The electrode impact testing machine according to claim 1, characterized in that: The front end of the test chamber (1) is provided with a collection box (5) located below the corresponding inclined guide channel (101), and the collection box (5) is an inverted right-angled trapezoidal box.

5. The electrode impact testing machine according to claim 4, characterized in that: The bottom of the collection box (5) is equipped with a magnetic suction plate (501) for magnetic attraction to the bottom of the test chamber (1).

6. The electrode impact testing machine according to claim 1, characterized in that: The control console device includes a side-mounted electrical control box (100) that is closely attached to the side of the test chamber (1). The side-mounted electrical control box (100) is detachably connected to the side of the test chamber (1) by bolts. The front wall of the side-mounted electrical control box (100) is hollowed out and a control terminal body (4) is installed inside. The front side of the control terminal body (4) is a touch screen.

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