Clamp for copper wire tensile test
By using a pressure wheel and platform structure in the copper wire tensile test fixture, the friction between the copper wire and the fixture is increased, the problem of the copper wire end falling off is solved, and a stable tensile test is achieved.
Patent Information
- Application Number
- CN202422820870.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-19
- Publication Date
- 2025-10-10
- Estimated Expiration
- 2034-11-19
AI Technical Summary
The copper wire ends in existing tensile test devices are prone to falling off the fixture, resulting in test failure.
A copper wire tensile test fixture was designed. A pressure wheel and a platform were set on the rotor. The raised part of the pressure wheel contacted with the platform to press the end of the copper wire tightly. The rotor was driven by a motor to rotate, so that the copper wire was wound on the rotor, increasing the friction between the copper wire and the fixture to prevent it from falling off.
It effectively prevents the copper wire end from falling off the fixture, ensuring the smooth progress of the tensile test.
Smart Images
Figure CN223426417U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a clamp, in particular to a clamp for copper wire tensile testing. Background Art
[0002] The copper wire draw string test is used to test the quality of the copper wire and determine the tensile strength of the copper wire.
[0003] Generally, when stretching a copper wire, both ends of the copper wire are mounted on the fixtures of the tensile test device. The driving structure of the tensile test device is then used to drive the two fixtures or one of the fixtures to move, and the test purpose is achieved through linear stretching action.
[0004] The clamp in the existing tensile testing device only clamps the end of the copper wire. However, since the surface of the copper wire is relatively smooth, the end of the copper wire is likely to fall off the clamp during the test. Utility Model Content
[0005] Aiming at the technical problem that the end of the copper wire is easily fallen off from the clamp during the test of the existing tensile testing device, the utility model provides a clamp for copper wire tensile testing, which has the advantage of preventing the copper wire from falling off the clamp.
[0006] The technical solution of the utility model is:
[0007] A fixture for copper wire tensile testing, comprising:
[0008] Mounting rack;
[0009] A motor, fixed on the mounting frame;
[0010] a rotor coaxially disposed on the output shaft of the motor, wherein the rotor has a hollow clamping portion therein, the clamping portion has a platform therein, and the rotor has a passage extending from the outside to the inside;
[0011] The pressing wheel is rotatably arranged in the clamping part, and the side of the pressing wheel has a protrusion, and the protrusion can contact the platform.
[0012] Optionally, an arc-shaped limiting block is further provided in the clamping portion, and two ends of the limiting block are respectively located on both sides of the raised portion.
[0013] Optionally, when the protrusion contacts the platform, one end of the limiting block contacts the side of the protrusion.
[0014] Optionally, two limiting grooves are provided at the end of the pressure wheel, and positioning grooves are provided at the end of the limiting block and the rotor. The clamp further includes a positioning block, and the limiting block can be embedded in the limiting groove and the positioning groove.
[0015] Optionally, when one of the limiting grooves is aligned with the positioning groove, the protrusion just rests on the platform.
[0016] Optionally, it also includes:
[0017] A clamping plate is located below the rotor and is fixed on a mounting frame;
[0018] The pressure plate is also located below the rotor and on one side of the clamping plate, with a gap between the pressure plate and the clamping plate. The pressure plate is movably arranged on the mounting frame.
[0019] Optionally, it also includes:
[0020] The cylinder has a cylinder body fixed on the mounting frame, and a piston rod connected to the side of the pressing plate away from the clamping plate. The cylinder can drive the pressing plate to fit with the clamping plate.
[0021] Optionally, the channel is an inclined structure relative to the platform, and one end of the channel points to the gap between the clamping plate and the pressing plate.
[0022] Optionally, a strip-shaped driving plate is further provided in the middle of one end of the pressing wheel.
[0023] Compared with the prior art, the beneficial effects of the present invention are:
[0024] First, a mounting frame is provided, and the clamp is mounted on the driving mechanism of the tensile testing device through the mounting frame.
[0025] The motor is installed on the mounting frame and the rotor is driven to rotate by the motor.
[0026] When clamping the copper wire, one end of the copper wire is passed through the channel on the rotor into the clamping part. Inside the clamping part, the end of the copper wire is placed on the platform. By rotating the pressure wheel, the raised part on the pressure wheel contacts the platform and the end of the copper wire is pressed.
[0027] The motor then drives the rotor to rotate, causing the copper wire to wrap around the outside of the rotor several times.
[0028] Two of these fixtures can be installed in a tensile testing device, so that the motors in the two fixtures move synchronously to straighten the copper wire. The tensile testing device's drive mechanism then performs the test.
[0029] This technical solution uses a pressure wheel to press the end of the copper wire against the platform before winding the copper wire around the rotor, thereby increasing the contact area between the copper wire and the rotor, thereby increasing the friction between the copper wire and the clamp, and cooperating with the pressure wheel and the platform to prevent the end of the copper wire from falling off the clamp. BRIEF DESCRIPTION OF THE DRAWINGS
[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.
[0031] Figure 1 It is a front structure schematic view of the utility model;
[0032] Figure 2 It is a three-dimensional structure schematic view of the utility model. DETAILED DESCRIPTION
[0033] In the following, only some exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present application. Therefore, the drawings and the description are considered to be exemplary in nature rather than limiting.
[0034] The following disclosure provides many different embodiments or examples for implementing different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described in the following. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeatedly refer to numbers and / or letters in different examples, and such repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides examples of various specific processes and materials, but those skilled in the art can realize the application of other processes and / or the use of other materials.
[0035] The embodiments of the present application will be described in detail below with reference to the drawings.
[0036] Embodiment:
[0037] Referring to Figure 1 and Figure 2 The present embodiment discloses a kind of copper wire tensile test clamp, including mounting frame 10, motor 20, rotor 30 and pressure roller 40.Specifically, mounting frame 10 is mainly used to install the clamp on the driving mechanism of tensile test device, and the mounting frame 10 is also used to install motor 20, rotor 30 and pressure roller 40.
[0038] Among them, the motor 20 has a self-locking function. The motor 20 is fixedly set on the mounting frame 10. The rotor 30 is coaxially arranged on the output shaft of the motor 20. The interior of the rotor 30 is a hollow structure. The hollow structure is a clamping part 31. There is a platform 32 structure inside the clamping part 31. The platform 32 protrudes toward the middle of the rotor 30.
[0039] One end of the pressure wheel 40 is rotatably mounted within the clamping portion 31 of the rotor 30, and the pressure wheel 40 and the rotor 30 are also coaxially arranged. The outer surface of the pressure wheel 40 has a raised portion 41 with an arc-shaped transition. During rotation, the pressure wheel 40 contacts and abuts against the platform 32 within the clamping portion 31.
[0040] In addition, the rotor 30 is provided with a channel 34 , which passes through from the outer surface of the rotor 30 to the clamping portion 31 inside the rotor 30 .
[0041] In this embodiment, when clamping the copper wire, one end of the copper wire is passed through the channel 34 on the rotor 30 into the clamping portion 31. In the clamping portion 31, the end of the copper wire is placed on the platform 32. By rotating the pressure wheel 40, the protrusion 41 on the pressure wheel 40 contacts the platform 32, and the end of the copper wire is pressed.
[0042] Then, the motor 20 drives the rotor 30 to rotate, so that the copper wire is wound around the outside of the rotor 30 for several turns.
[0043] Two such clamps can be installed in a tensile testing device so that the motors 20 in the two clamps move synchronously to straighten the copper wire. The tensile testing device can then be used to perform the test.
[0044] In this technical solution, the end of the copper wire is pressed against the platform 32 by the pressure wheel 40, and then the copper wire is wound on the rotor 30, thereby increasing the contact area between the copper wire and the rotor 30, thereby increasing the friction between the copper wire and the clamp, and cooperating with the pressure wheel 40 and the platform 32 to prevent the end of the copper wire from falling off the clamp.
[0045] In one specific embodiment:
[0046] A limit block 50 is fixedly provided in the clamping portion 31 . The limit block 50 is an arc-shaped structure. The outer surface of the limit block 50 is connected to the inner surface of the rotor 30 , and the inner surface of the limit block 50 is in sliding contact with the outer surface of the pressure wheel 40 .
[0047] Among them, the two ends of the limit block 50 are respectively located on both sides of the raised portion 41 on the pressure wheel 40. When the raised portion 41 of the pressure wheel 40 contacts the platform 32, one end of the limit block 50 contacts the side of the raised portion 41. At this time, there is a gap between the other end of the limit block 50 and the other side of the raised portion 41, so that the pressure wheel 40 can rotate a certain angle in the clamping portion 31.
[0048] In this embodiment, by providing the limit block 50, the rotation range of the pressing wheel 40 can be limited, and the protrusion 41 of the pressing wheel 40 can be ensured to be pressed exactly on the platform 32, so that the protrusion 41 can keep pressing the end of the copper wire.
[0049] Preferably, the end of the pressure wheel 40 is provided with two limiting grooves 42, both extending from the side of the pressure wheel 40. Positioning grooves 33 are provided at the ends of the limiting block 50 and the rotor 30, with the positioning grooves 33 on the rotor 30 and the positioning grooves 33 on the limiting block 50 being aligned. The fixture also includes a positioning block 60, which can be inserted into either of the limiting grooves 42 and both of the positioning grooves 33.
[0050] When one of the limiting grooves 42 is aligned with the two positioning grooves 33, the protrusion 41 is exactly against the platform 32, and at this time, one end of the limiting block 50 is exactly in contact with one side of the protrusion 41. When the pressure wheel 40 is rotated to align the other limiting groove 42 with the two positioning grooves 33, the other side of the protrusion 41 contacts the other end of the limiting block 50, and the protrusion 41 is separated from the platform 32, creating a gap.
[0051] By providing two limiting grooves 42 on the pressing wheel 40 and using the positioning block 60 to cooperate with the limiting grooves 42 to limit the position of the pressing wheel 40, the pressing wheel 40 is prevented from moving in position after the position is adjusted due to the motor 20 driving the rotor 30 to rotate.
[0052] In another specific embodiment:
[0053] The fixture also includes a clamping plate 71, a pressure plate 72, and a cylinder 73. Specifically, the pressure plate 72 and clamping plate 71 are both located below the rotor 30. The clamping plate 71 is fixed to the mounting frame 10, while the pressure plate 72 is slidably mounted on the mounting frame 10. The length of the clamping plate 71 is parallel to the axis of the rotor 30. The pressure plate 72 is located on one side of the clamping plate 71 and is arranged parallel to the clamping plate 71, with a gap between them.
[0054] The cylinder body of the cylinder 73 is fixed on the mounting frame 10, and the piston rod of the cylinder 73 is set on the side of the pressure plate 72 away from the clamping plate 71. The piston rod of the cylinder 73 is used to drive the pressure plate 72 to move closer to or away from the clamping plate 71, and can make the pressure plate 72 fit with the clamping plate 71.
[0055] In this embodiment, the pressing plate 72 and the clamping plate 71 are provided to restrict the direction of the copper wire so that the length direction of the stretched section of the copper wire is consistent with the movement direction of the driving mechanism of the rope pulling test device.
[0056] In another specific embodiment:
[0057] The channel 34 is inclined relative to the platform 32 , and one end of the channel 34 points to the gap between the clamping plate 71 and the pressing plate 72 . This design can prevent the copper wire from bending when it is installed.
[0058] In another specific embodiment:
[0059] A strip-shaped driving plate 43 is further provided in the middle of one end of the pressing wheel 40 . The driving plate 43 is designed to drive the pressing wheel 40 to rotate in the clamping portion 31 .
[0060] The above-described embodiments merely represent specific implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the scope of the present invention, all of which fall within the scope of protection of the present invention.
Claims
1. A fixture for copper wire tensile testing, characterized in that: include: Mounting rack; A motor, fixed on the mounting frame; a rotor coaxially disposed on the output shaft of the motor, wherein the rotor has a hollow clamping portion therein, the clamping portion has a platform therein, and the rotor has a passage extending from the outside to the inside; The pressing wheel is rotatably arranged in the clamping part, and the side of the pressing wheel has a protrusion, and the protrusion can contact the platform.
2. The copper wire tensile test fixture according to claim 1, characterized in that: An arc-shaped limiting block is further provided in the clamping portion, and two ends of the limiting block are respectively located on both sides of the raised portion.
3. The fixture for copper wire tensile testing according to claim 2, characterized in that: When the protrusion contacts the platform, one end of the limiting block contacts the side of the protrusion.
4. The fixture for copper wire tensile testing according to claim 1, characterized in that: The end of the pressure wheel is provided with two limiting grooves, the limiting block and the end of the rotor are provided with positioning grooves, and the clamp further comprises a positioning block, and the limiting block can be embedded in the limiting groove and the positioning groove.
5. The fixture for copper wire tensile testing according to claim 4, characterized in that: When one of the limiting grooves is aligned with the positioning groove, the protrusion just rests on the platform.
6. The fixture for copper wire tensile testing according to any one of claims 1 to 5, characterized in that: Also includes: A clamping plate is located below the rotor and is fixed on a mounting frame; The pressure plate is also located below the rotor and on one side of the clamping plate, with a gap between the pressure plate and the clamping plate. The pressure plate is movably arranged on the mounting frame.
7. The fixture for copper wire tensile testing according to claim 6, characterized in that: Also includes: The cylinder has a cylinder body fixed on the mounting frame, and a piston rod connected to the side of the pressing plate away from the clamping plate. The cylinder can drive the pressing plate to fit with the clamping plate.
8. The fixture for copper wire tensile testing according to claim 6, characterized in that: The channel is an inclined structure relative to the platform, and one end of the channel points to the gap between the clamping plate and the pressing plate.
9. The fixture for copper wire tensile testing according to claim 1, characterized in that: A strip-shaped driving plate is also provided in the middle of one end of the pressing wheel.