Automatic tension testing device for wire rod

Abstract

The utility model relates to the technical field of tension testing, and discloses an automatic tension testing device for a wire rod, which comprises a bottom plate, an adjusting mechanism, a clamping and positioning mechanism and a tension sensor. According to the automatic tension testing device for the wire, through mutual cooperation of the adjusting mechanism, the clamping and positioning mechanism and the tension sensor, the two ends of the wire can be clamped more stably, the stress of the two ends of the wire is more uniform, the probability that the wire slips or disengages during testing is reduced, and the testing efficiency is improved. By rotating the worm, the rotating rod, the worm gear and the positioning disc can rotate, when the positioning disc rotates, the three positioning columns can move close to or away from one another, then wire rods of different sizes can be clamped and positioned, meanwhile, clamping and positioning are conducted through three stress points, the wire rods can be stressed more evenly, and the wire rods are more stable. Local stress concentration is reduced, larger contact area and friction force can be provided, the wire rod is prevented from sliding, and the wire rod is more practical.

Description

Technical Field

[0001] This application relates to the field of tensile testing technology, specifically to an automatic tensile testing device for wires. Background Technology

[0002] The manufacturing process of electrical wires involves multiple testing procedures to ensure the quality of the wires leaving the factory. One of these testing procedures is the tensile test. The tensile test helps manufacturers confirm whether the produced wires meet the standard specifications and design requirements. If the tensile strength of the wires is lower than the specified value, it may indicate that there is a quality problem and that the wires cannot meet the usage requirements.

[0003] A prior patent (publication number: CN213209703U) discloses a wire tensile testing device, including a base and a column mounted on the base. The column's axis is vertically oriented, and an upper fixture is mounted on the column. The upper fixture includes a mounting base fixedly mounted on the column, a limiting post mounted on the mounting base, a fixed base mounted on the limiting post, a clamping seat slidably mounted on the limiting post, and a driving assembly for driving the clamping seat to slide. The clamping seat is located between the mounting base and the fixed base. The fixed base has a first clamping end face on the side near the clamping seat, and the clamping seat has a second clamping end face on the side near the fixed base. When clamping a wire, the wire is located between the first clamping end face and the second clamping end face. This application improves the wire clamping effect.

[0004] The aforementioned comparative document points out that existing wire tensile testing devices do not have sufficient clamping force on the wire, which makes the wire prone to slipping or even coming off during testing, thus affecting the test results. In order to further optimize the clamping force of the testing device on the wire and reduce the probability of the wire slipping or coming off during testing, an automatic tensile testing device for wire is proposed. Utility Model Content

[0005] To address the shortcomings of existing technologies, this application provides an automatic tensile testing device for wires, which has excellent clamping stability, uniform force distribution, and anti-slip effect, thereby optimizing the quality of testing.

[0006] To achieve the above objectives, this application provides the following technical solution: an automatic tensile testing device for wire, comprising a base plate, an adjustment mechanism, a clamping and positioning mechanism, and a tensile sensor. The clamping and positioning mechanism includes two bases, each base having a rotating rod and a worm gear rotatably connected to its inner wall. Each rotating rod has a worm wheel and a positioning disc fixedly connected to its outer surface. The worm wheel meshes with the worm gear. Each positioning disc has three guide grooves inside. Each base has three guide rails fixedly connected to its upper surface. Each guide rail has a guide block slidably connected to its outer surface. Each guide block has a connecting rod fixedly connected to its upper surface. Each connecting rod has a bearing fixedly connected to its outer surface, the bearing being sleeved on the inner wall of the guide groove. Each connecting rod has a positioning post fixedly connected to its top end.

[0007] The above solution, through the coordinated operation of the adjustment mechanism, clamping and positioning mechanism, and tension sensor, enables more stable clamping of both ends of the wire and more uniform force distribution, reducing the probability of slippage or detachment during testing. Rotating the worm gear causes the rotating rod, worm wheel, and positioning disc to rotate. When the positioning disc rotates, the three positioning posts move closer or further apart, enabling clamping and positioning of wires of different sizes. Furthermore, clamping and positioning through three force points ensures more uniform force distribution on the wire, reduces localized stress concentration, and provides a larger contact area and friction, preventing wire slippage and making the solution more practical.

[0008] Furthermore, the adjustment mechanism includes a U-shaped bracket fixedly connected to the upper surface of the base plate and two lead screws rotatably sleeved on the inner wall of the U-shaped bracket, with a first bevel gear fixedly connected to the top of each lead screw.

[0009] With the above scheme, when the lead screw rotates, the first bevel gear can rotate, which facilitates subsequent transmission work.

[0010] Furthermore, each lead screw has a threaded sleeve connected to its outer surface, and a connecting plate is fixedly connected to the side of the two sleeves that are close to each other. The tension sensor is fixedly connected to the upper surface of the base plate.

[0011] With the above scheme, when the lead screw rotates, the sleeve can move up and down along the inner wall of the U-shaped bracket, thereby driving the connecting plate to move up and down.

[0012] Furthermore, one of the two bases is fixedly connected to the top of the tension sensor, and the outer surface of the other base is fixedly connected to one side of each of the two connecting plates that are close to each other.

[0013] The above scheme defines the positions of the two bases, with one base in a fixed position and the other base able to move up and down, thus facilitating the tensile testing of the wire.

[0014] Furthermore, a dual-axis motor is fixedly connected to the top of the U-shaped bracket, and a second bevel gear is fixedly connected to each of the two output shafts of the dual-axis motor. The two second bevel gears mesh with the two first bevel gears respectively. Two reinforcing blocks are fixedly connected to the top of the U-shaped bracket, and the outer surfaces of the two output shafts of the dual-axis motor are respectively rotatably sleeved on the inner walls of the two reinforcing blocks.

[0015] With the above scheme, when the dual-axis motor starts, it can drive the two second bevel gears to rotate. The two first bevel gears can make the two lead screws rotate simultaneously. The reinforcement blocks can improve the stability of the dual-axis motor shaft when it rotates.

[0016] Furthermore, a rubber sleeve is fixedly connected to the outer surface of each positioning post, and a knob is fixedly connected to the shaft end of each worm gear, the knob being located outside the base.

[0017] The above solution increases the friction between the positioning post and the wire end, thereby reducing the probability of the wire slipping or coming off. The positioning post also increases the contact area at the worm shaft end, thus enabling convenient rotation of the worm.

[0018] Furthermore, a controller is fixedly connected to the outer surface of the U-shaped bracket, and the electrical components in the adjustment mechanism and the clamping and positioning mechanism are all electrically connected to the controller. Positioning holes are provided at the four corners of the base plate.

[0019] The controller provided by the above scheme can easily control the electrical components in the device, simplifying the operation process. The positioning holes can be used to position the entire device in a suitable location, facilitating subsequent tensile testing.

[0020] Furthermore, a protective cover is fixedly connected to the upper surface of the base plate, a double door is installed on the front of the protective cover, a handle is fixedly connected to the outer surface of the double door, and the adjustment mechanism and the clamping and positioning mechanism are both located inside the protective cover.

[0021] The above-mentioned design, including the protective cover, double doors, and handles, enhances the safety of the tensile testing process, preventing debris from flying and injuring test personnel when the wire breaks, making it more practical.

[0022] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0023] This automatic tensile testing device for wires, through the coordinated operation of an adjustment mechanism, a clamping and positioning mechanism, and a tensile sensor, can more stably clamp both ends of the wire and make the force on both ends of the wire more uniform, reducing the probability of the wire slipping or detaching during testing. By rotating the worm gear, the rotating rod, worm wheel, and positioning disk can be rotated. When the positioning disk rotates, the three positioning posts can move closer or further apart, thereby clamping and positioning wires of different sizes. At the same time, clamping and positioning through three force points can make the force on the wire more uniform, reduce local stress concentration, and provide a larger contact area and friction, preventing the wire from slipping, making it more practical. Attached Figure Description

[0024] Figure 1 This is a top view of the overall structure of this application.

[0025] Figure 2 This is a partial bottom view of the structure of this application;

[0026] Figure 3 This is a first partial top view of the structure of this application;

[0027] Figure 4 This is a partial top view of the structure of this application;

[0028] Figure 5 This is a partial cross-sectional view of the structure of this application.

[0029] In the picture:

[0030] 1. Base plate; 2. Adjustment mechanism; 201. U-shaped bracket; 202. Lead screw; 203. Sleeve block; 204. Connecting plate; 205. First bevel gear; 206. Dual-axis motor; 207. Second bevel gear; 208. Reinforcing block; 3. Clamping and positioning mechanism; 301. Base; 302. Rotating rod; 303. Worm gear; 304. Worm; 305. Positioning plate; 306. Guide groove; 307. Guide rail; 308. Guide block; 309. Connecting rod; 310. Bearing; 311. Positioning column; 312. Rubber sleeve; 313. Knob; 4. Tension sensor; 5. Controller; 6. Protective cover; 7. Double door; 8. Handle; 9. Positioning hole. Detailed Implementation

[0031] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0032] Please see Figure 1 , Figure 2 and Figure 3 This embodiment of an automatic tensile testing device for wire includes a base plate 1, an adjustment mechanism 2, a clamping and positioning mechanism 3, and a tensile sensor 4. The adjustment mechanism 2 includes a U-shaped bracket 201 fixedly connected to the upper surface of the base plate 1 and two lead screws 202 rotatably sleeved on the inner wall of the U-shaped bracket 201. A first bevel gear 205 is fixedly connected to the top of each lead screw 202. When the lead screw 202 rotates, the first bevel gear 205 can rotate, facilitating subsequent transmission. A sleeve block 203 is threadedly connected to the outer surface of each lead screw 202. A connecting plate 204 is fixedly connected to the side of the two sleeve blocks 203 that are close to each other. The tensile sensor 4 is fixedly... The screw 202 is fixedly connected to the upper surface of the base plate 1. When the screw 202 rotates, the sleeve 203 can move up and down along the inner wall of the U-shaped bracket 201, thereby driving the connecting plate 204 to move up and down. The clamping and positioning mechanism 3 includes two bases 301. One of the bases 301 is fixedly connected to the top of the tension sensor 4. The outer surface of the other base 301 is fixedly connected to the side of the two connecting plates 204 that are close to each other, which limits the position of the two bases 301. This allows one base 301 to be in a fixed position while the other base 301 can move up and down, thus facilitating the tensile testing of the wire.

[0033] Please see Figure 3 A dual-axis motor 206 is fixedly connected to the top of the U-shaped bracket 201. Two second bevel gears 207 are fixedly connected to the two output shafts of the dual-axis motor 206. The two second bevel gears 207 mesh with two first bevel gears 205 respectively. When the dual-axis motor 206 starts, the two second bevel gears 207 rotate simultaneously, which in turn causes the two lead screws 202 to rotate simultaneously via the two first bevel gears 205. Two reinforcing blocks 208 are fixedly connected to the top of the U-shaped bracket 201. The outer surfaces of the two output shafts of the dual-axis motor 206 are respectively rotatably fitted onto the inner walls of the two reinforcing blocks 208. When the dual-axis motor 206 starts, it drives the two second bevel gears 207 to rotate, and the two first bevel gears 205 cause the two lead screws 202 to rotate simultaneously. The reinforcing blocks 208 improve the stability of the dual-axis motor 206 shafts during rotation.

[0034] Please see Figure 3 , Figure 4 and Figure 5Each base 301 has a rotating rod 302 and a worm gear 304 rotatably connected to its inner wall. Each rotating rod 302 has a worm wheel 303 and a positioning disc 305 fixedly connected to its outer surface. The worm wheel 303 meshes with the worm gear 304, and their interaction provides a self-locking effect, limiting the rotation of the rotating rod 302 and preventing it from rotating freely. This facilitates subsequent positioning of the wire end. Each positioning disc 305 has three guide grooves 306 inside. Each base 301 has three guide rails 307 fixedly connected to its upper surface. Each guide rail 307 has a guide block 308 slidably connected to its outer surface. Each guide block 308 has a connecting rod 309 fixedly connected to its upper surface. The guide rails 307 and guide blocks 308 work together to facilitate subsequent adjustment of the position of the connecting rod 309. Adjusting the position of the connecting rod 309 facilitates subsequent positioning of the wire end. Each connecting rod 309 has a bearing 3 fixedly connected to its outer surface. 10. Bearing 310 is sleeved on the inner wall of guide groove 306. Each connecting rod 309 has a positioning post 311 fixedly connected to its top end. The bearing 310 allows the connecting rod 309 to move easily inside the guide groove 306, enabling the three positioning posts 311 to move closer or further apart, thus achieving the positioning of wires of different sizes. Positioning the wire in three directions makes the force on the wire more uniform, reduces local stress concentration, and provides a larger contact area and friction to prevent the wire from slipping. Each positioning post 311 has a rubber sleeve 312 fixedly connected to its outer surface. Each worm gear 304 has a knob 313 fixedly connected to its shaft end. The knob 313 is located outside the base 301. The rubber sleeve 312 increases the friction between the positioning post 311 and the wire end, thereby reducing the probability of the wire slipping or detaching. The positioning post 311 increases the contact area of ​​the worm gear 304 shaft end, thus enabling convenient rotation of the worm gear 304.

[0035] Please see Figure 1 and Figure 2A controller 5 is fixedly connected to the outer surface of the U-shaped bracket 201. The electrical components in the adjustment mechanism 2 and the clamping and positioning mechanism 3 are all electrically connected to the controller 5. Positioning holes 9 are provided at the four corners of the base plate 1. The controller 5 can be used to control the electrical components in the device, simplifying the operation process. The positioning holes 9 can be used to position the device in a suitable position, which is convenient for subsequent tensile testing. A protective cover 6 is fixedly connected to the upper surface of the base plate 1. A double door 7 is installed on the front of the protective cover 6. A handle 8 is fixedly connected to the outer surface of the double door 7. The adjustment mechanism 2 and the clamping and positioning mechanism 3 are both located inside the protective cover 6. The protective cover 6, the double door 7 and the handle 8 can improve the safety of the tensile testing process and prevent the debris from flying and injuring the test personnel when the wire breaks, making it more practical.

[0036] In this embodiment, an automatic tensile testing device for wires, through the coordinated operation of an adjustment mechanism 2, a clamping and positioning mechanism 3, and a tensile sensor 4, can more stably clamp both ends of the wire and make the force on both ends of the wire more uniform, reducing the probability of the wire slipping or detaching during testing. By rotating the worm gear 304, the rotating rod 302, the worm wheel 303, and the positioning disk 305 can be rotated. When the positioning disk 305 rotates, the three positioning posts 311 can move closer or further apart, thereby enabling the clamping and positioning of wires of different sizes. At the same time, clamping and positioning through three force points can make the force on the wire more uniform, reduce local stress concentration, and provide a larger contact area and friction, preventing the wire from slipping, making it more practical.

[0037] The working principle of the above embodiment is as follows: During use, both ends of the wire need to be positioned between the two bases 301. During positioning, one end of the wire is placed on the positioning plate 305, and the wire is positioned inside the three rubber sleeves 312. Then, the knob 313 is rotated. When the knob 313 rotates, it drives the worm gear 304 to rotate. The rotation of the worm gear 304 causes the worm wheel 303, the rotating rod 302, and the positioning plate 305 to rotate. When the positioning plate 305 rotates, the bearings 310 cause the three connecting rods 309 to move within the corresponding guide grooves 306. Simultaneously, the three guide blocks 308 move along the three guide rails 307, allowing the three positioning posts 311 to move closer to each other. Ultimately, this enables the wire to be positioned and clamped in three directions, ensuring the wire... The force is more evenly distributed, reducing local stress concentration. Clamping the wire in three directions provides a larger contact area and friction, preventing the wire from slipping. Then, repeat the above steps to position the other end of the wire in the appropriate position. After that, the dual-axis motor 206 can be started and the double door 7 can be closed, allowing the adjustment mechanism 2, clamping and positioning mechanism 3, and tension sensor 4 to perform tension testing inside the protective cover 6. When the dual-axis motor 206 is started, it can drive the two second bevel gears 207 to rotate. The two first bevel gears 205 can make the two U-shaped brackets 201 rotate simultaneously, thereby driving the upper base 301 to move. Then, in conjunction with the lower base 301 positioned on the tension sensor 4, the tension test can be performed on the wire positioned between the two bases 301.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0039] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic tensile testing device for wire, comprising a base plate (1), an adjustment mechanism (2), a clamping and positioning mechanism (3), and a tensile sensor (4), characterized in that: The clamping and positioning mechanism (3) includes two bases (301). A rotating rod (302) and a worm gear (304) are rotatably connected to the inner wall of each base (301). A worm wheel (303) and a positioning disc (305) are fixedly connected to the outer surface of each rotating rod (302). The worm wheel (303) meshes with the worm gear (304). Three guide grooves (306) are provided inside each positioning disc (305). The upper surface of each base (301)... Each guide rail (307) is fixedly connected to three guide rails (307). Each guide rail (307) is slidably connected to a guide block (308) on its outer surface. Each guide block (308) is fixedly connected to a connecting rod (309) on its upper surface. Each connecting rod (309) is fixedly connected to a bearing (310) on its outer surface. The bearing (310) is sleeved on the inner wall of the guide groove (306). Each connecting rod (309) is fixedly connected to a positioning post (311) at its top end.

2. The automatic tension testing device for wire rod according to claim 1, characterized in that: The adjustment mechanism (2) includes a U-shaped bracket (201) fixedly connected to the upper surface of the base plate (1) and two lead screws (202) rotatably sleeved on the inner wall of the U-shaped bracket (201). Each lead screw (202) is fixedly connected to the top of a first bevel gear (205).

3. The automatic tensile testing device for wires according to claim 2, characterized in that: Each lead screw (202) has a threaded sleeve (203) on its outer surface. A connecting plate (204) is fixedly connected to the side of the two sleeves (203) that are close to each other. The tension sensor (4) is fixedly connected to the upper surface of the base plate (1).

4. The automatic tensile testing device for wires according to claim 3, characterized in that: One of the two bases (301) is fixedly connected to the top of the tension sensor (4), and the outer surface of the other base (301) is fixedly connected to one side of each of the two connecting plates (204) that are close to each other.

5. An automatic tensile testing device for wires according to claim 2, characterized in that: A dual-axis motor (206) is fixedly connected to the top of the U-shaped bracket (201). A second bevel gear (207) is fixedly connected to each of the two output shafts of the dual-axis motor (206). The two second bevel gears (207) mesh with the two first bevel gears (205) respectively. Two reinforcing blocks (208) are fixedly connected to the top of the U-shaped bracket (201). The outer surfaces of the two output shafts of the dual-axis motor (206) are respectively rotatably sleeved on the inner walls of the two reinforcing blocks (208).

6. An automatic tensile testing device for wires according to claim 1, characterized in that: Each of the positioning pins (311) has a rubber sleeve (312) fixedly connected to its outer surface, and each of the worm gears (304) has a knob (313) fixedly connected to its shaft end. The knob (313) is located outside the base (301).

7. An automatic tensile testing device for wires according to claim 2, characterized in that: The outer surface of the U-shaped bracket (201) is fixedly connected to a controller (5). The electrical components in the adjustment mechanism (2) and the clamping and positioning mechanism (3) are all electrically connected to the controller (5). Positioning holes (9) are provided at the four corners of the base plate (1).

8. An automatic tensile testing device for wires according to claim 1, characterized in that: A protective cover (6) is fixedly connected to the upper surface of the base plate (1). A double door (7) is installed on the front of the protective cover (6). A handle (8) is fixedly connected to the outer surface of the double door (7). The adjustment mechanism (2) and the clamping and positioning mechanism (3) are both located inside the protective cover (6).

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