Pull-out test device of wire terminal

Abstract

The utility model belongs to the technical field of tool clamps, and discloses a wire terminal pull-out test device which comprises a terminal fixing clamp and a wire harness fixing clamp. The terminal fixing clamp comprises a terminal fixing clamp base (1) and a terminal limiting pin (2); the terminal fixing clamp base (1) is of an inverted-Y-shaped structure, the top of the terminal fixing clamp base (1) is used for being connected with an upper chuck of a tension testing machine, a transversely-penetrating pin hole is formed in the lower portion of the terminal fixing clamp base (1), the terminal limiting pin (2) is inserted into the pin hole, and a terminal limiting groove is formed in the middle of the terminal limiting pin (2). And a wire terminal to be drawn is arranged in the terminal limiting groove. According to the utility model, a sample can be quickly and accurately mounted during a test, the wire terminal is ensured to be vertical up and down in a clamping process and to be stable and not easy to displace due to external influence in a pull-out test process, so that the sample is stressed in a balanced manner in the pull-out process, and the test efficiency and the accuracy and reliability of a test result are improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to tooling fixture technical field, especially relates to a wire terminal drawing test device. BACKGROUND

[0002] A variety of wiring terminals such as OT round, DT copper nose, DTS double-hole copper nose, DTL copper-aluminum nose, DL aluminum nose, JG copper nose, SC copper nose, DT open nose and the like all need to be subjected to drawing test. In the process of testing drawing force by using a general wire terminal drawing test device, uneven force on the wire terminal caused by improper installation of samples or displacement and inclination of the terminal in the drawing process affects the accuracy and reliability of test results, and therefore different drawing test devices need to be designed for different types of wire terminals. SUMMARY

[0003] The utility model solves the technical problems that uneven force is applied to the wire terminal in the drawing process, thereby affecting the accuracy and reliability of test results.

[0004] To solve the above technical problems, the specific technical scheme of the utility model is as follows:

[0005] A wire terminal drawing test device, comprising a terminal fixing clamp and a wire harness fixing clamp;

[0006] The terminal fixing clamp comprises a terminal fixing clamp base 1 and a terminal limiting pin 2; the terminal fixing clamp base 1 is in inverted Y-shaped structure, the top part thereof is used for being connected with an upper chuck of a tensile testing machine, and the lower part thereof is provided with a transversely penetrating pin hole, the terminal limiting pin 2 is inserted into the pin hole, and a terminal limiting groove is formed in the middle part of the terminal limiting pin 2; the wire terminal to be drawn is arranged in the terminal limiting groove;

[0007] The wire harness fixing clamp comprises a movable block 3, a guide rod 4, a push rod mounting seat, a push-pull lead screw 5, a wire harness fixing clamp plate 6 and a wire harness fixing clamp base 7;

[0008] The bottom part of the wire harness fixing clamp base 7 is connected with a lower chuck of the tensile testing machine, the wire harness fixing clamp plate 6 is fixed to the top part of the wire harness fixing clamp base 7, and a wire harness limiting groove 8 is formed in the wire harness fixing clamp plate 6; the wire harness to be drawn is wound in the wire harness limiting groove 8; the guide rod 4 is fixed perpendicularly to the side surface of the wire harness fixing clamp plate 6; the movable block 3 is in sliding connection with the guide rod 4; the push rod mounting seat is fixed oppositely to the wire harness fixing clamp plate 6; the push-pull lead screw 5 is supported in the threaded hole of the push rod mounting seat in the middle part, one end of the push-pull lead screw 5 is provided with a handle, and the other end of the push-pull lead screw 5 is connected with the movable block 3.

[0009] Further, the positions of the terminal limiting groove and the wire harness limiting groove correspond to each other.

[0010] Further, the position of the terminal limiting slot and the wire harness limiting slot is consistent with the pulling direction of the pulling tester.

[0011] Further, a limiting block is arranged on the terminal limiting pin 2, which is attached to the side surface of the terminal fixing clamp base 1, and is used for fixing the installation position of the terminal limiting pin 2.

[0012] Further, the wire harness fixing clamp plate 6 and the wire harness fixing clamp base 7 are fixed by screws.

[0013] The device has the following advantages: the device has a terminal limiting pin and a wire harness limiting slot, which determines the installation position of the terminal and the wire harness, the sample can be quickly and accurately installed during the test, the wire terminal is stable during the clamping process and the pulling test, is not easily affected by the external environment to displace, the test sample is balanced during the pulling process, and the test efficiency and the accuracy and reliability of the test result are improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a schematic view of the terminal fixing clamp structure;

[0015] Figure 2 It is a schematic view of the terminal limiting pin structure;

[0016] Figure 3 It is a schematic view of the wire harness fixing clamp structure;

[0017] Figure 4 It is a top view of the wire harness fixing clamp.

[0018] Marked in the figure: 1-terminal fixing clamp base; 2-terminal limiting pin; 3-movable block; 4-guide rod; 5-push-pull screw rod; 6-wire harness fixing clamp plate; 7-wire harness fixing clamp base; 8-wire harness limiting slot; 9-tightening screw. DETAILED DESCRIPTION

[0019] In order to better understand the purpose, structure and function of the utility model, the utility model will be described in further detail below in combination with the drawings.

[0020] As Figure 1 shown, the device for wire terminal pulling test of the utility model, including terminal fixing clamp base 1, terminal limiting pin 2, movable block 3, guide rod 4, push rod mounting seat, push-pull screw rod 5, wire harness fixing clamp plate 6, wire harness fixing clamp base 7, wire harness limiting slot 8, tightening screw 9.

[0021] Among them, (1) terminal fixing clamp base 1, for quickly determining the installation position of the terminal and preventing the displacement and inclination of the terminal during the pulling process;

[0022] (2) terminal limiting pin 2, for determining the position of terminal limiting slot, thereby determining the installation of terminal to the force center;

[0023] (3) movable block 3, for cooperating with wire harness fixed clamp head to fix wire harness;

[0024] (4) guide rod 4, for guiding the push-pull of movable block;

[0025] (5) push-pull wire rod 5, for pushing and pulling wire harness movable block;

[0026] (6) wire harness fixed clamp plate 6, for winding wire harness;

[0027] (7) wire harness clamp base 7, for matching and connecting wire harness fixed clamp and universal tensile testing machine;

[0028] (8) wire harness limiting slot 8, for quickly determining the installation position of wire harness, which is matched with terminal limiting pin, and can keep verticality under force when clamping sample;

[0029] (9) fastening screw 9, for fastening wire harness fixed clamp.

[0030] The specific implementation process of the device is as follows:

[0031] During the test, the computer acquisition control system is connected with the universal tensile testing machine, the suitable range and test method are selected according to the allowable value of the tensile strength test (tensile test) of the terminal, and the terminal limiting pin with the maximum size that can pass through the aperture is selected according to the size of the terminal aperture. The upper and lower clamp heads clamp the terminal fixed clamp and the wire harness fixed clamp respectively, the head without limiting block of the terminal limiting pin is sequentially inserted through the side of the terminal fixed clamp, the terminal, and the other side of the terminal fixed clamp, until the limiting block on the limiting pin and the outside of the terminal fixed clamp are tightly attached, and the terminal is installed on the terminal limiting slot. The wire harness of the terminal is wound upwards through the wire harness limiting slot, and the push-pull wire rod is tightened, so that the wire harness fixed clamp plate with the wire harness limiting slot and the wire harness fixed clamp plate clamp the wire harness. At this time, it can be ensured that the terminal is vertically upward and fixed during the tensile test process, and the test can be started.

[0032] Although the embodiments of the present application are described in combination with the drawings, a number of modifications and improvements can be made by those skilled in the art without departing from the principles of the present application, and these should be considered as belonging to the protection scope of the present application.

Claims

1. A pull test device for a wire terminal, characterized by, The terminal fixing clamp and the wire harness fixing clamp are included. The terminal fixing clamp includes a terminal fixing clamp base (1) and a terminal limiting pin (2). The terminal fixing clamp base (1) is in an inverted Y-shaped structure, the top of which is used to be connected with an upper clamp of a tensile testing machine, and the lower part of which is provided with a pin hole penetrating through horizontally. The terminal limiting pin (2) is inserted into the pin hole, and the middle part of the terminal limiting pin (2) is provided with a terminal limiting groove. The wire terminal to be pulled is arranged in the terminal limiting groove. The wire harness fixing clamp includes a movable block (3), a guide rod (4), a push rod mounting seat, a push-pull lead screw (5), a wire harness fixing clamp plate (6), and a wire harness fixing clamp base (7). The bottom of the wire harness fixing clamp base (7) is connected with a lower clamp of a tensile testing machine, the wire harness fixing clamp plate (6) is fixed on the top of the wire harness fixing clamp base (7), the wire harness fixing clamp plate (6) is provided with a wire harness limiting groove (8), the wire harness to be pulled is wound in the wire harness limiting groove (8), the guide rod (4) is fixed perpendicularly to the side surface of the wire harness fixing clamp plate (6), the movable block (3) is in sliding connection with the guide rod (4), the push rod mounting seat is fixed oppositely to the wire harness fixing clamp plate (6), and the middle part of the push-pull lead screw (5) is supported in a threaded hole of the push rod mounting seat, one end of the push-pull lead screw (5) is provided with a handle, and the other end of the push-pull lead screw (5) is connected with the movable block (3).

2. The pull test device for a wire terminal according to claim 1, characterized by The positions of the terminal limiting groove and the wire harness limiting groove correspond to each other.

3. The pull test device for a wire terminal according to claim 1, characterized by The positions of the terminal limiting groove and the wire harness limiting groove are consistent with the tensile direction of the tensile testing machine.

4. The pull test device for a wire terminal according to claim 1, characterized by The terminal limiting pin (2) is provided with a limiting stopper, the limiting stopper is attached to the side surface of the terminal fixing clamp base (1), and the limiting stopper is used to fix the installation position of the terminal limiting pin (2).

5. The pull test device for a wire terminal according to claim 1, characterized by The wire harness fixing clamp plate (6) and the wire harness fixing clamp base (7) are fixed by screws.

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