Wire guide and liquid level sensor manufacturing apparatus

Abstract

The present application belongs to the technical field of wire conveying, and solves the problems of low conveying efficiency, low reliability and precision of assembly of the prior art. The present application provides a wire conveying device and a liquid level sensor manufacturing equipment. The wire conveying device comprises a wire feeding mechanism, a wire winding assembly and a limiting assembly corresponding to the wire winding assembly. The wire winding assembly is used for receiving the wire, and the limiting assembly limits the position of the wire. The wire feeding mechanism comprises a wire slot. The driving assembly drives the wire to move above the wire slot. The limiting assembly releases the limitation of the wire to enable the wire slot to receive the falling wire. The wire pushing mechanism is used for fixing and pushing the wire in the wire slot. The wire clamping mechanism is used for clamping the wire pushed into the wire slot by the wire pushing mechanism. The clamping mechanism is used for installing and clamping the workpiece to which the wire is assembled. The present application has the advantages of high conveying efficiency, high reliability and high precision of assembly.

Description

Technical Field

[0001] This invention relates to the field of wire conveying technology, and in particular to a wire conveying device and a liquid level sensor manufacturing equipment. Background Technology

[0002] Wires, as a medium for transmitting current or signals, are widely used in many workpieces with electrical components. The reliability and accuracy achieved by assembling wires using methods such as soldering are crucial for the high-quality operation of the workpiece. Therefore, there are high requirements for the reliability and accuracy of the wires delivered to the electrical components. Taking an existing contact-type liquid level sensor as an example, it utilizes contacts on a spring that can rotate relative to a resistive element to change the resistance value, thereby realizing the output of a sensing signal. Liquid level sensors are generally installed in the fuel tank of a fuel-powered vehicle to obtain the fuel level in the tank based on the sensing signal, so that the vehicle's fuel gauge can indicate the fuel level accordingly. The liquid level sensor includes wires, a frame, and a resistive element. The resistive element is first assembled in the frame. Then, a fixed end of each wire is delivered to the corresponding preset wire ends of the resistive element, and the corresponding fixed ends and preset wire ends are welded and assembled in place. However, in the existing technology, the conveying of wires to the corresponding positions of the workpiece for assembly is either carried out by traditional manual methods with extremely low conveying efficiency, or by simple tooling semi-automation methods, which still require a large degree of operator involvement. Moreover, the operator is prone to bending the wires during the process, which adversely affects the reliability and accuracy of wire conveying. In particular, for the assembly of multiple wires relative to the same workpiece, the tooling semi-automation method requires manual intervention in the transfer of the relative positions of the workpiece and each wire, making it difficult to ensure that each wire can be assembled with multiple different preset wire ends of the same workpiece with high precision.

[0003] In summary, existing technologies suffer from low transmission efficiency and low assembly reliability and accuracy for conductors. Summary of the Invention

[0004] This invention addresses the shortcomings of existing technologies in terms of low wire conveying efficiency and low assembly reliability and accuracy. To achieve one objective of this invention, a wire conveying device is provided, comprising: a wire feeding mechanism, including a driving component, a wire take-up component, and a limiting component corresponding to the take-up component, wherein the take-up component receives the wire and the limiting component limits the position of the wire; a wiring mechanism, including a wiring groove, wherein the driving component drives the wire to move above the wiring groove, and the limiting component releases the limitation on the wire so that the wiring groove receives the wire after it falls; a wire pushing mechanism, for fixing and pushing the wire located in the wiring groove; a wire clamping mechanism, for clamping the wire pushed into the groove by the wire pushing mechanism; and a clamping mechanism, for installing and clamping the workpiece to which the wire is assembled.

[0005] Furthermore, the drive assembly includes a first drive cylinder and a first drive block connected by a drive, a second drive cylinder and a second drive block connected by a drive, a support, a drive arm, a lifting rod, and a lifting arm. The support is fixedly connected to the first drive block. The first drive cylinder drives the first drive block to reciprocate along a first direction relative to the wiring mechanism, moving closer to or further away from it. The second drive cylinder is mounted on the support. The drive arm is fixedly connected to the second drive block. The lifting rod is fixedly connected to the drive arm. One end of the lifting arm is fixedly connected to the lifting rod, and the other end is initially located in the wiring groove. The take-up assembly includes a take-up block and a baffle. The take-up block has a take-up groove for receiving the wire. The baffle abuts against the front end of the wire and is located at the end of the take-up block furthest from the take-up groove. The limiting assembly includes a first driver, a limiting block, and a pair of limiting clamps located opposite each other on both sides of the limiting block. A gap can be formed between adjacent limiting clamps to allow a wire to enter. The first driver drives a pair of limiting clamps to move closer to or further away from each other relative to the sides of the adjacent limiting blocks. When they are relatively close, the pair of limiting clamps clamp and fix the wire in the gap. When they are relatively far apart, a gap is formed that allows the wire to pass through. The driving arm is fixedly connected to the first driver. After the pair of limiting clamps have clamped and fixed the wire, the second driving cylinder drives the second driving block to move the driving arm upward along the second direction. Thus, the limiting clamps and the lifting arm jointly lift the wire away from the take-up slot. The first driving cylinder then drives the first driving block to move the support towards the wiring mechanism along the first direction. The first direction is perpendicular to the second direction. After the wire is above its corresponding wiring slot, the first driver drives the pair of limiting clamps to move away from each other, so that the wire falls into the wiring slot.

[0006] Furthermore, the wiring mechanism includes a wiring plate, a pair of guide posts, a support block, and a third drive cylinder. The wiring plate is provided with wiring slots, and the number of pairs of guide posts is the same as the number of take-up slots. The guide posts restrict the movement of the wires passing through the wiring slots in the second direction. The support block is located above the third drive cylinder, and the wiring plate and the support block are fixedly connected relative to each other. The third drive cylinder drives the support block to reciprocate parallel to the first direction.

[0007] Furthermore, the wire pushing mechanism includes a second driver, a retaining block, a pair of retaining plates, and a pair of drive frames. The pair of retaining plates are respectively fixed to a drive frame. A retaining plate is provided on each side of the retaining block. Each retaining plate has a retaining groove communicating with the wire take-up groove. When two take-up grooves and two vertical planes parallel to the first direction pass through the pair of take-up grooves and the take-up groove, a retaining block is provided at the end of the connector plate closer to the wire clamping mechanism. The wire passes through the retaining groove, the retaining plate, and the retaining block. The second driver is mounted on a support block. The connector plate is fixedly connected to the support block via the second driver and a fixed post. The second driver drives the pair of drive frames to move the pair of retaining plates relatively closer to or further away from the sides of the adjacent retaining blocks, thereby correspondingly fixing or releasing the wire position. Alternatively, when one take-up groove and one take-up groove are provided, and a vertical plane parallel to the first direction passes through the pair of take-up grooves and the take-up groove, a retaining plate is provided at the end of the connector plate closer to the wire clamping mechanism. When the wire passes through a take-up slot and a take-up trough, each of the pair of retaining plates has a retaining slot facing each other. The wire passes through the two retaining slots and then through the pair of retaining plates. The second driver drives a pair of drive frames to move the pair of retaining plates closer or further apart, thereby fixing or releasing the wire position accordingly. If there are two take-up slots or one take-up slot, when the wiring mechanism is located at the initial wiring position corresponding to the wire after it has been received in the wiring slot and the second driver drives the pair of retaining plates to move closer to each other to keep the wire position fixed, the third drive cylinder drives the wiring plate and the wire pushing mechanism to move towards the wire clamping mechanism, thereby moving the wiring mechanism to the wire clamping receiving position. After the wire is clamped by the wire clamping mechanism, the second driver drives the pair of retaining plates to move further apart to release the wire position. The third drive cylinder drives the wiring plate and the wire pushing mechanism to move away from the wire clamping mechanism and return to the initial wiring position.

[0008] Furthermore, the wire clamping mechanism includes a support plate, a first wire clamping plate, and a second wire clamping plate. The first wire clamping plate has two first wire clamping half-holes, and the second wire clamping plate has two second wire clamping half-holes. The first and second wire clamping half-holes are arranged alternately opposite to each other. The first and second wire clamping plates are elastically connected to the support plate through a first elastic element. Under the action of the first elastic element, the first and second wire clamping plates are initially separated from each other, thus forming a first wire passage groove between each pair of adjacent first and second wire clamping half-holes. A guide roller is provided on the outer side of the first and second wire clamping plates respectively. A first... A guide rail is provided, and a first guide block is provided on the first wire clamping plate and the second wire clamping plate respectively, which is slidably connected to the first guide rail. A pressure plate is fixed on each of the two outer surfaces of the support block. When the third drive cylinder drives the support block to move towards the wire clamping mechanism in parallel with the first direction, the two pressure plates press against a guide pressure wheel respectively. The first wire clamping plate and the second wire clamping plate respectively overcome the elastic force of the corresponding first elastic element and abut against each other, so that each pair of adjacent first wire clamping half hole and second wire clamping half hole forms a wire clamping through hole. At the same time, the third drive cylinder drives the wire that is held in position by a pair of retaining plates to pass through the wire clamping through hole and be clamped in the wire clamping through hole.

[0009] Furthermore, the wire clamping mechanism also includes a wire threading assembly, which is located between the two wire clamping plates and the terminal block. The wire threading assembly includes a wire threading block, a wire threading detector, and a fourth drive cylinder. The wire threading block is provided with a second wire passage groove that communicates with the wire threading hole. The number of wire threading holes and wire take-up grooves are the same. The fourth drive cylinder drives the wire threading block to rise and fall to ensure that the wire passes through the wire threading hole and enters the corresponding wire clamping through hole under the drive of the third drive cylinder. Each wire threading hole is equipped with a wire threading detector, which detects whether the wire has accurately passed through the wire threading hole.

[0010] Furthermore, the wire clamping mechanism also includes a fifth drive cylinder and a mounting plate. The mounting plate has a second guide rail on its first side facing the support plate, and a second guide block that is slidably connected to the second guide rail is provided on the support plate. The fifth drive cylinder drives the support plate to rise and fall to ensure that the wire is accurately inserted into the corresponding wire clamping through hole. The clamping mechanism includes a third driver and a pair of jaws. The third driver is mounted on the second side of the mounting plate opposite to the first side. The third driver drives the pair of jaws to move closer or further apart, so that when the pair of jaws are relatively close, they can be used to clamp a workpiece to assemble the wire onto the workpiece. When the wire is assembled onto the workpiece, the pair of jaws move further apart, thereby relaxing the workpiece so that it can be transferred.

[0011] Furthermore, the wire feeding mechanism, wiring mechanism, wire pushing mechanism, wire clamping mechanism, and clamping mechanism are all provided in pairs, and each of these different mechanisms constitutes a wire conveying module. There are two wire conveying modules. The wire conveying device also includes a flipping mechanism, which flips and transfers the workpiece assembled by one wire conveying module to another wire conveying module for reassembly. The flipping mechanism includes a movable plate, a sixth drive cylinder, a rotary driver, a first rotating plate, a second rotating plate, and a clamping assembly. The sixth drive cylinder drives the movable plate to move in a direction parallel to the first direction. The movable plate supports the rotary driver. The second rotating plate is fixed to the first rotating plate. The rotary driver drives the first rotating plate to rotate the second rotating plate, so that the workpiece clamped by the clamping mechanism of one wire conveying module can be rotated and transferred to the clamping mechanism of another wire conveying module. The clamping assembly includes a pair of fixedly connected clamping blocks and jaws, and a second elastic element. The second elastic element applies an elastic force to the pair of clamping blocks to bring them closer together. The second rotating plate is provided with a third guide rail. The extension direction of the clamping blocks is perpendicular to the extension direction of the first guide rail. Each of the two clamping blocks is slidably connected to the third guide rail via a third guide block. Each clamping block is provided with a force-bearing block. The free ends of the two jaws are provided with tapered wedge-shaped portions. Under the drive of the sixth drive cylinder, the two jaws move towards the workpiece clamped by the pair of jaws. When the pair of jaws are relatively close under the drive of the third drive, while the workpiece is clamped by the pair of jaws, the two force-bearing blocks, under the action of the inclined surfaces of the two wedge-shaped portions, cause the two clamping blocks to move away from each other, so that the two jaws are positioned at the workpiece. Outside the two clamped parts of the workpiece, after the wire is assembled on the workpiece, the two jaws move away from the workpiece clamped by the pair of jaws under the drive of the sixth drive cylinder, and when the pair of jaws moves away from each other under the drive of the third drive, while the workpiece is released by the pair of jaws, the two force blocks are gradually no longer subjected to the inclined surface force of the two wedge-shaped parts, and the two clamping blocks bring the two jaws closer to each other under the action of the elastic force of the second elastic element, thereby clamping the two clamped parts of the workpiece. The clamped workpiece can be rotated to another wire conveying module.

[0012] Furthermore, the flipping mechanism also includes a third rotating plate and a seventh driving cylinder. The seventh driving cylinder is located at the end of the second rotating plate that is relatively far away from the clamping assembly. When the clamping assembly is rotated to a horizontal position by the rotating driver, the two piston rods of the seventh driving cylinder extend, allowing the wire that has been assembled to the workpiece to enter the vertical gap between the two extended piston rods. As the wire rotates with the workpiece, the two piston rods extend to prevent the wire from deflecting, thereby rotating the clamped workpiece to another wire conveying module so that the wire in the other wire conveying module can be further assembled to the workpiece. The two piston rods shorten to prepare for the next re-extension.

[0013] To achieve another objective of the present invention, a liquid level sensor manufacturing apparatus is provided, including any of the above-mentioned wire conveying devices.

[0014] The beneficial effects of this invention are as follows:

[0015] The wire conveying device and liquid level sensor manufacturing equipment of the present invention utilize a wire feeding mechanism to accurately accommodate and transport wires, a wiring mechanism to reliably receive the wires transported and dropped by the wire feeding mechanism, a clamping mechanism to reliably clamp the fixture to accurately align the free end of the wire to be assembled, and a wire pushing mechanism and a wire clamping mechanism working together to accurately deliver the free end of the wire to the predetermined position of the fixture. Therefore, the wire conveying device of the present invention not only has high wire conveying efficiency but also high assembly reliability and accuracy. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments of the present invention will be briefly introduced below. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, and these are all within the protection scope of the present invention.

[0017] Figure 1 This is a schematic diagram of the overall structure of the wire conveying device according to an embodiment of the present invention from one perspective;

[0018] Figure 2 This is a schematic diagram of the overall structure of the wire conveying device according to an embodiment of the present invention from another perspective;

[0019] Figure 3 This is a schematic diagram of the wire feeding mechanism of the wire conveying device according to an embodiment of the present invention from one perspective;

[0020] Figure 4 This is a schematic diagram of the wire feeding mechanism of the wire conveying device according to an embodiment of the present invention from another perspective.

[0021] Figure 5 This is a schematic diagram of the overall structure of the wiring mechanism, wire pushing mechanism, wire clamping mechanism, and clamping mechanism of the wire conveying device according to an embodiment of the present invention;

[0022] Figure 6 This is a schematic diagram showing the overall structure of the wire clamping mechanism and the mounting mechanism of the wire conveying device according to an embodiment of the present invention from one perspective;

[0023] Figure 7 This is a schematic diagram showing the overall structure of the wire clamping mechanism and the mounting mechanism of the wire conveying device according to an embodiment of the present invention from another perspective;

[0024] Figure 8 This is a schematic diagram of the flipping mechanism of the wire conveying device according to an embodiment of the present invention;

[0025] Figure 9This is a schematic diagram of the structure of the liquid level sensor manufactured by the liquid level sensor manufacturing equipment according to an embodiment of the present invention;

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Wire feeding mechanism; 11. Drive assembly; 111. First drive cylinder; 112. First drive block; 113. Second drive cylinder; 114. Second drive block; 115. Support; 116. Drive arm; 117. Wire lifting rod; 118. Wire lifting arm; 12. Wire take-up assembly; 121. Wire take-up block; 1211. Wire take-up groove; 122. Baffle; 13. Limiting assembly; 131. First driver; 132. Limiting block; 133. Limiting clamp; 2. Wiring mechanism; 21 1. Terminal block; 211. Terminal slot; 22. Guide post; 23. Support block; 24. Third drive cylinder; 25. Fixing post; 3. Wire pushing mechanism; 31. Second driver; 32. Holding block; 33. Holding plate; 331. Holding slot; 34. Drive frame; 4. Wire clamping mechanism; 401. Support plate; 402. First wire clamping plate; 4021. First wire clamping half hole; 403. Second wire clamping plate; 4031. Second wire clamping half hole; 404. First elastic element; 405. First 406. Wire guide groove; 407. First guide rail; 408. First guide block; 409. Pressure plate; 410. Wire threading assembly; 4101. Wire threading block; 41011. Second wire guide groove; 4102. Wire threading detector; 4103. Fourth drive cylinder; 411. Fifth drive cylinder; 412. Mounting support plate; 413. Second guide rail; 414. Second guide block; 5. Clamping mechanism; 51. Third driver; 52. Claw; 521. Wedge-shaped part; 6. Flipping Mechanism; 61. Movable plate; 62. Sixth drive cylinder; 63. Rotary actuator; 64. First rotating plate; 65. Second rotating plate; 66. Gripping assembly; 661. Gripping block; 662. Gripper; 663. Second elastic element; 664. Third guide rail; 665. Third guide block; 666. Force-bearing block; 667. Third rotating plate; 668. Seventh drive cylinder; 20. Wire; 30. Resistance element; 40. Frame; 50. Rocker arm; 60. Spring; 70. Spring leaf. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. It should be noted that, in this document, relational terms such as "first" and "second" are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. In the description of the present invention, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. 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 limitation, an element limited by the phrase "comprising..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element. Unless otherwise specified, embodiments of the present invention and the various features thereof can be combined with each other, all within the scope of protection of the present invention.

[0029] refer to Figures 1 to 8As an objective of this invention, a wire feeding device is provided, comprising a wire feeding mechanism 1, a wire connecting mechanism 2, a wire pushing mechanism 3, a wire clamping mechanism 4, and a clamping mechanism 5. The wire feeding mechanism 1 includes a driving assembly 11, a wire taking assembly 12, and a limiting assembly 13 corresponding to the wire taking assembly 12. The wire taking assembly 12 receives the wire 20, and the limiting assembly 13 limits the position of the wire 20. The wire connecting mechanism 2 includes a wire connecting groove 211. The driving assembly 11 drives the wire 20 to move above the wire connecting groove 211, and the limiting assembly 13 releases the limitation on the wire 20 so that the wire connecting groove 211 receives the fallen wire 20. The wire pushing mechanism 3 is used to fix and push the wire 20 located in the wire connecting groove 211. The wire clamping mechanism 4 is used to clamp the wire 20 pushed into the groove by the wire pushing mechanism 3. The clamping mechanism 5 is used to install and clamp the workpiece to which the wire 20 is assembled. In this invention, a liquid level sensor is used as an example of the workpiece. Therefore, the wire conveying device provided in this embodiment of the invention achieves highly automated wire conveying 20 by setting up various functional mechanisms that perform corresponding functions in cooperation with each other. In particular, the wire feeding mechanism 1 can accurately accommodate and transport the wire 20, the connection mechanism 2 can reliably receive the wire 20 transported and dropped by the wire feeding mechanism 1, the clamping mechanism 5 can reliably clamp the fixture to accurately align the free end of the wire 20 to be assembled, and the wire pushing mechanism 3 and the wire clamping mechanism 4 work together to accurately deliver the free end of the wire 20 to the predetermined position of the fixture. Thus, the wire conveying device of the present invention has the advantages of high conveying efficiency and high reliability and accuracy in assembly of the wire 20.

[0030] Please refer to the reference. Figure 3 and Figure 4Specifically, the drive assembly 11 includes a first drive cylinder 111 and a first drive block 112 connected by a drive, a second drive cylinder 113 and a second drive block 114 connected by a drive, a support 115, a drive arm 116, a lifting rod 117 and a lifting arm 118 connected by a drive, the support 115 is fixedly connected to the first drive block 112, the first drive cylinder 111 drives the first drive block 112 to reciprocate along a first direction relative to the wiring mechanism 2, moving closer to or further away from it, the second drive cylinder 113 is disposed on the support 115, the drive arm 116 is fixedly connected to the second drive block 114, the lifting rod 117 is fixedly connected to the drive arm 116, one end of the lifting arm 118 is fixedly connected to the lifting rod 117 and the other end is initially located in the wiring groove 211. The take-up assembly 12 includes a take-up block 121 and a baffle 122. The take-up block 121 has a take-up groove 1211 for receiving the wire. The baffle 122 abuts against the front end of the wire 20 and is located at the end of the take-up block 121 away from the take-up groove 1211. The limiting assembly 13 includes a first driver 131, a limiting block 132, and a pair of limiting clamps 133 located opposite each other on both sides of the limiting block 132. A gap for the wire 20 to enter can be formed between the limiting block 132 and the adjacent limiting clamps 133. The first driver 131 drives the pair of limiting clamps 133 to approach or move away from each other relative to the sides of the adjacent limiting block 132. When they approach each other, the pair of limiting clamps 133 clamp and fix the wire 20 located in the gap. When they move away from each other, a gap is formed that allows the wire 20 to pass through. The driving arm 116 is fixedly connected to the first driver 131. After the pair of limiting clamps 133 have clamped and fixed the wire 20, the second drive cylinder 113 drives the second drive block 114 to move the drive arm 116 upward in the vertical direction. This causes the limiting clamps 133 and the lifting arm 118 to jointly lift the wire 20 away from the take-up slot 1211. The first drive cylinder 111 then drives the first drive block 112 to move the support 115 toward the wiring mechanism 2 in the first direction, which is perpendicular to the vertical direction. Once the wire 20 is above its corresponding wiring slot 211, the first driver 131 drives the pair of limiting clamps 133 to move away from each other, causing the wire 20 to fall into the wiring slot 211. In this way, the pair of limiting clamps 133 of the wire feeding mechanism 1 cannot reliably clamp and release the wire 20 and accurately move above the corresponding wiring slot 211 under the drive of the corresponding drive cylinder, ensuring that the wiring slot 211 accurately receives the falling wire 20.

[0031] Please refer to the reference. Figure 5Specifically, the wiring mechanism 2 includes a wiring plate 21, pairs of guide posts 22, a support block 23, and a third drive cylinder 24. The wiring plate 21 has wiring slots 211. The number of pairs of guide posts 22 is the same as the number of take-up slots 1211. The guide posts 22 restrict the movement of the wires 20 passing through the wiring slots 211 in a second direction. The support block 23 is located above the third drive cylinder 24. The wiring plate 21 and the support block 23 are fixedly connected, and the third drive cylinder 24 drives the support block 23 to reciprocate parallel to the first direction. In this way, each wire 20 located on the wiring plate 21 is not only reliably positioned by the wiring slots 211 and guide posts 22, but can also be accurately conveyed to the clamping mechanism 4 and the mounting mechanism 5 by the third drive cylinder 24.

[0032] Please refer to the reference. Figure 5 Specifically, the wire pushing mechanism 3 includes a second driver 31, a retaining block 32, a pair of retaining plates 33, and a pair of drive frames 34. The pair of retaining plates 33 are respectively fixed on a drive frame 34. A retaining plate 33 is provided on each side of the retaining block 32. Each retaining plate 33 has a retaining groove 331 that communicates with the wire receiving groove 211. When there are two wire receiving grooves 1211 and two vertical planes parallel to the first direction pass through the pair of wire receiving grooves 1211 and 1211 respectively, a retaining block 32 is provided at the end of the wire receiving plate 21 closer to the wire clamping mechanism 4. The wire 20 passes through the retaining groove 331, the retaining plate 33, and the retaining block 32. The second driver 31 is set on the support block 23. The wire receiving plate 21 passes through the second driver 31 and the fixed The column 25 is fixedly connected to the support block 23. The second driver 31 drives a pair of drive frames 34 to move a pair of retaining plates 33 closer to or further away from the side of the adjacent retaining block 32, thereby fixing or releasing the position of the wire 20. Alternatively, when both take-up grooves 1211 and take-up grooves 1211 are provided as one and a vertical plane parallel to the first direction passes through one take-up groove 1211 and one take-up groove 1211 respectively, the retaining grooves 331 provided by each of the pair of retaining plates 33 are opposite to each other. The wire 20 passes through the two retaining grooves 331 and then through the pair of retaining plates 33. The second driver 31 drives a pair of drive frames 34 to move a pair of retaining plates 33 closer to or further away from each other, thereby fixing or releasing the position of the wire 20.

[0033] For both take-up slots 1211 and take-up slots 1211, there may be two or one take-up slot. When the wiring mechanism 2 is located at the initial wiring position corresponding to the wire 20 after it has been received by the wire 20 in the wiring slot 211, and the second driver 31 drives a pair of retaining plates 33 to move relatively close so that the position of the wire 20 is kept fixed, the third drive cylinder 24 drives the wiring plate 21 and the push mechanism 3 to move towards the clamping mechanism 4, so that the wiring mechanism 2 moves to the clamping receiving position. After the wire 20 is clamped by the clamping mechanism 4, the second driver 31 drives a pair of retaining plates 33 to move relatively away so that the position of the wire 20 is released. The third drive cylinder 24 drives the wiring plate 21 and the push mechanism 3 to move away from the clamping mechanism 4 and return to the initial wiring position.

[0034] It should be noted that in this invention, there are two wire feeding modules as described below. In one wire feeding module, both the receiving block and the terminal block 21 have one take-up slot 1211, while in the other wire feeding module, both the receiving block and the terminal block 21 have two take-up slots 1211. Therefore, the wire pushing mechanism 3 uses a pair of retaining plates 33 to maintain and release the position of the wire 20.

[0035] Please refer to the reference. Figure 6 and Figure 7Specifically, the wire clamping mechanism 4 of the wire conveying device includes a support plate 401, a first clamping plate 402, and a second clamping plate 403. The first clamping plate 402 of the wire conveying device has two first clamping half-holes 4021, and the second clamping plate 403 of the wire conveying device has two second clamping half-holes 4031. The first clamping half-holes 4021 and the second clamping half-holes 4031 of the wire conveying device are arranged alternately opposite to each other. The first clamping plate 402 and the second clamping plate 403 of the wire conveying device are respectively connected to a first elastic member 404. The wire conveying device support plate 401 is elastically connected. Under the action of the first elastic element 404 of the wire conveying device, the first clamping plate 402 and the second clamping plate 403 of the wire conveying device are initially separated from each other, thus forming a first wire passage groove 405 between two adjacent first clamping half-holes 4021 and second clamping half-holes 4031 of the wire conveying device. A guide roller 406 is respectively provided on the outer side of the first clamping plate 402 and the second clamping plate 403 of the wire conveying device. A first guide rail 407 is provided on the support plate 401. A first guide block 408, which is slidably connected to the first guide rail 407, is provided on the first wire clamping plate 402 and the second wire clamping plate 403 respectively. A pressure plate 409 is fixed on each of the two outer surfaces of the wire conveying device support block 23. When the third drive cylinder 24 of the wire conveying device drives the wire conveying device support block 23 to move parallel to the first direction of the wire conveying device toward the wire clamping mechanism 4, the two wire conveying device pressure plates 409 respectively press against a wire conveying device guide roller 406. The first clamping plate 402 and the second clamping plate 403 of the wire conveying device respectively overcome the elastic force of the corresponding first elastic element 404 of the wire conveying device and abut against each other, so that each pair of adjacent first clamping half-holes 4021 and second clamping half-holes 4031 of the wire conveying device forms a clamping through hole. At the same time, the third driving cylinder 24 of the wire conveying device drives the wire 20, which is held in position by a pair of wire conveying device holding plates 33, to pass through the clamping through hole of the wire conveying device and be clamped in the clamping through hole of the wire conveying device. In this way, the first clamping plate 402 and the second clamping plate 403 can clamp and release the wire in conjunction with the movement of the pressure plate 409, thereby facilitating the conveying of the wire and its subsequent transfer with the workpiece.

[0036] Please refer to the reference. Figures 5 to 7Specifically, the wire clamping mechanism 4 further includes a wire threading assembly 410, which is located between the two wire clamping plates and the terminal block 21. The wire threading assembly 410 includes a wire threading block 4101, a wire threading detector 4102, and a fourth drive cylinder 4103. The wire threading detector 4102 can be an infrared detector. The wire threading block 4101 is provided with a second wire-passing groove 41011 that communicates with the wire threading hole. The number of wire threading holes and wire-receiving grooves 1211 are the same. The fourth drive cylinder 4103 drives the wire threading block 4101 to rise and fall to ensure that the wire 20 passes through the wire threading hole and enters the corresponding wire clamping through hole under the drive of the third drive cylinder 24. Each wire threading hole is equipped with a wire threading detector 4102, which detects whether the wire 20 has accurately passed through the wire threading hole. Therefore, the wire threading assembly 410 can further ensure that the wire 20 accurately passes through the wire threading hole and enters the wire clamping through hole.

[0037] Please refer to the reference. Figure 2 , Figures 5 to 7 Specifically, the wire clamping mechanism 4 also includes a fifth drive cylinder 411 and a mounting plate 412. The mounting plate 412 has a second guide rail 413 on its first side facing the support plate 401. The support plate 401 has a second guide block 414 that is slidably connected to the second guide rail 413. The fifth drive cylinder 411 drives the support plate 401 to rise and fall to ensure that the wire 20 is accurately inserted into the corresponding wire clamping through hole. The clamping mechanism 5 includes a third driver 51 and a pair of jaws 52. The third driver 51 is mounted on the second side of the mounting plate 412 opposite to the first side. The third driver 51 drives the pair of jaws 52 to move closer or further apart. When the pair of jaws 52 are relatively close, they can be used to clamp a workpiece to assemble the wire 20 onto the workpiece. After the wire 20 is assembled onto the workpiece, the pair of jaws 52 move further apart, thereby releasing the workpiece so that it can be transferred. In this way, a pair of jaws 52 can reliably clamp the workpiece to ensure that the wire 20 is assembled on the workpiece, and can also automatically release the workpiece so that the workpiece with the wire 20 assembled can be transferred to another wire conveying module in a timely manner, for example, by a flipping mechanism 6.

[0038] Please refer to the reference. Figure 1 , Figure 2 , Figure 8 and Figure 9Specifically, the wire feeding mechanism 1, the wiring mechanism 2, the wire pushing mechanism 3, the wire clamping mechanism 4, and the clamping mechanism 5 are all configured in pairs, and each of these different mechanisms constitutes a wire conveying module. There are two wire conveying modules. It should be noted that the embodiments of the present invention are all described using two wire conveying modules as an example. This allows for the assembly of, for example, one or two wires 20 on both sides of the resistive element 30 of the liquid level sensor relative to the workpiece, by welding, thereby achieving high wire assembly efficiency. The wire conveying device also includes a flipping mechanism 6. The flipping mechanism 6 flips and transfers the workpiece assembled by one wire conveying module to another wire conveying module for reassembly. The flipping mechanism 6 includes a movable plate 61, a sixth drive cylinder 62, a rotary driver 63, a first rotating plate 64, a second rotating plate 65, and a clamping assembly 66. The sixth drive cylinder 62 drives the movable plate 61 to move in a direction parallel to the first direction. The movable plate 61 supports the rotary driver 63. The second rotating plate 65 is fixed to the first rotating plate 64. The rotary driver 63 drives the first rotating plate 64 to rotate the second rotating plate 65. The first rotating plate 64 and the second rotating plate 65 can be separate or integrated, so that the workpiece clamped by the clamping mechanism 5 of one wire conveying module can be rotated and transferred to the clamping mechanism 5 of another wire conveying module. The clamping assembly 66 includes a pair of fixedly connected clamping blocks 661 and jaws 662, and a second elastic member 663. The second elastic member 663 applies an elastic force to the pair of clamping blocks 661 to bring them closer together. The second elastic member 663 and the first elastic member 404 are both springs. The second rotating plate 65 is provided with a third guide rail 664, and the extension direction of the third guide rail 664 is the same as the extension direction of the first guide rail 407. Vertically, each of the two clamping blocks 661 is slidably connected to the third guide rail 664 via a third guide block 665. Each of the two clamping blocks 661 is provided with a force-bearing block 666. The free ends of the two jaws 662 are provided with tapered wedge-shaped portions 521. Driven by the sixth drive cylinder 62, the two jaws 662 move towards the workpiece clamped by the pair of jaws 662. When the pair of jaws 662 are relatively close under the drive of the third driver 51, while the workpiece is clamped by the pair of jaws 662, the two force-bearing blocks 666, under the action of the inclined surfaces of the two wedge-shaped portions 521, cause the two clamping blocks 661 to move away from each other, so that the two jaws 662 are positioned at the workpiece. Outside the two clamped parts of the workpiece, after the wire 20 is assembled on the workpiece, the two grippers 662 move away from the workpiece clamped by the pair of grippers 662 under the drive of the sixth drive cylinder 62, and when the pair of grippers 662 move away from each other under the drive of the third drive 51, while the workpiece is relaxed by the pair of grippers 662, the two force blocks 666 gradually stop being subjected to the inclined surface force of the two wedge-shaped parts 521, and the two clamping blocks 661, under the action of the elastic force of the second elastic member 663, make the two grippers 662 approach each other, thereby clamping the two clamped parts of the workpiece. The clamped workpiece can be rotated to another wire conveying module.Therefore, the flipping mechanism 6 can transfer the workpiece between different wire conveying modules with high automation and reliability, and realize precise wire assembly on different surfaces of the workpiece.

[0039] Please refer to the reference. Figure 8 Specifically, the flipping mechanism 6 also includes a third rotating plate 667 and a seventh driving cylinder 668. The seventh driving cylinder 668 is located at the end of the second rotating plate 65 that is relatively far from the clamping assembly 66. When the clamping assembly 66 is rotated to a horizontal position by the rotating driver 63, the two piston rods of the seventh driving cylinder 668 extend, allowing the wire 20, which has been assembled to the workpiece, to enter the vertical gap between the extended piston rods. As the wire 20 rotates with the workpiece, the two piston rods extend to prevent the wire 20 from deflecting, thereby rotating the clamped workpiece to another wire conveying module so that the wire 20 in the other wire conveying module can be further assembled to the workpiece. The two piston rods shorten to prepare for the next extension. Therefore, the extension of the two piston rods can prevent the wire 20 from deflecting and hooking onto other external parts during the rotation of the workpiece, and the shortening of the two piston rods can prevent the wire 20 from interfering with the two piston rods before entering the vertical gap between the two piston rods.

[0040] As another object of the present invention, the present invention also provides a liquid level sensor manufacturing apparatus (not shown), which includes any of the above-described wire conveying devices. The liquid level sensor manufacturing apparatus includes multiple stations, and the wire conveying devices are correspondingly located at the wire conveying stations. Figure 9 The diagram illustrates a liquid level sensor manufactured using a liquid level sensor manufacturing apparatus. The liquid level sensor includes a frame 30, a resistive element 30 mounted within the frame 40, and a wire 20 mounted on the resistive element. More specifically, the liquid level sensor also includes a rocker arm 50, a spring 60, and a reed 70. The reed 70 is fixed to the rocker arm 50, and the rocker arm 50 is rotatably mounted on the resistive element 30. The spring 60 is positioned between the frame 40 and the rocker arm 50 to apply an elastic force to the relative position of the reed 70 and the resistive element 30. The rocker arm 50 rotates relative to the resistive element 30 at different angles by responding to changes in, for example, the buoyancy of gasoline in a fuel tank, thereby changing the resistance value of the contact point on the reed 70 and achieving the purpose of outputting a sensing signal. The liquid level sensor manufacturing apparatus can achieve the beneficial effects of any type of wire delivery device, which will not be elaborated further here. Therefore, the liquid level sensor manufacturing equipment conveys the wires 20 to the resistors 30 already assembled in the frame 40 through the wire conveying device, and assembles the fixed ends, i.e. conductive ends, of each wire with the preset wire ends of the preset wire ends of the resistors 30 by means of electrical contacts, such as soldering. Thus, the liquid level sensor can obtain power and output sensing signals through each wire 20. It has the advantages of high wire conveying efficiency and high assembly reliability and accuracy.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A wire conveying device, characterized in that, include: The wire feeding mechanism includes a driving component, a wire take-up component, and a limiting component corresponding to and cooperating with the wire take-up component. The wire take-up component is used to receive the wire, and the limiting component limits the position of the wire. A wiring mechanism, including a wiring slot, wherein the driving component drives the wire to move above the wiring slot, and the limiting component releases the wire from the limiting position so that the wiring slot receives the wire after it falls; A wire pushing mechanism is used to fix and push the wire located in the wiring slot; A wire clamping mechanism is used to clamp the wire pushed into it by the wire pushing mechanism; A clamping mechanism is used to install and clamp the workpiece to which the wire is assembled; The drive assembly includes a first drive cylinder and a first drive block connected by a drive, a second drive cylinder and a second drive block connected by a drive, a support, a drive arm, a lifting rod, and a lifting arm. The support is fixedly connected to the first drive block. The first drive cylinder drives the first drive block to reciprocate along a first direction relative to the wiring mechanism, moving closer to or further away from it. The second drive cylinder is disposed on the support. The drive arm is fixedly connected to the second drive block. The lifting rod is fixedly connected to the drive arm. One end of the lifting arm is fixedly connected to the lifting rod, and the other end is initially located in the wiring slot. The take-up assembly includes a take-up block and a baffle. The take-up block is provided with a take-up groove for receiving the wire, and the baffle abuts against the front end of the wire and is located at the end of the take-up block away from the take-up groove. The limiting assembly includes a first driver, a limiting block, and a pair of limiting clamps located opposite each other on both sides of the limiting block. A gap for a wire to enter can be formed between the limiting block and the adjacent limiting clamps. The first driver drives the pair of limiting clamps to move closer to each other or further away from each other relative to the sides of the adjacent limiting block. When they are relatively close, the pair of limiting clamps clamp and fix the wire located in the gap. When they are relatively far apart, the gap is formed to allow the wire to pass through. The driving arm is fixedly connected to the first driver. After the pair of limiting clamps have clamped and fixed the wire, the second driving cylinder drives the second driving block to move the driving arm upward along the second direction, so that the limiting clamps and the lifting arm jointly lift the wire away from the take-up groove. The first driving cylinder then drives the first driving block to move the support toward the wiring mechanism along the first direction, which is perpendicular to the second direction. After the wire is above its corresponding wiring groove, the first driver drives the pair of limiting clamps to move away from each other, so that the wire falls into the wiring groove.

2. The wire conveying device according to claim 1, characterized in that, The wiring mechanism includes a wiring plate, a pair of guide posts, a support block, and a third drive cylinder. The wiring plate is provided with wiring slots. The number of pairs of guide posts is the same as the number of take-up slots. The guide posts restrict the movement of the wires passing through the wiring slots in the second direction. The support block is located above the third drive cylinder. The wiring plate and the support block are fixedly connected relative to each other, and the third drive cylinder drives the support block to reciprocate parallel to the first direction.

3. The wire conveying device according to claim 2, characterized in that, The wire pushing mechanism includes a second driver, a retaining block, a pair of retaining plates, and a pair of drive frames. The pair of retaining plates are respectively fixed to one of the drive frames. A retaining plate is provided on each side of the retaining block. Each retaining plate has a retaining groove communicating with the wire receiving groove. When there are two take-up grooves and two vertical planes parallel to the first direction passing through the pair of take-up grooves and take-up grooves respectively, a retaining block is provided at the end of the wire receiving plate closer to the wire clamping mechanism. The wire passes through the retaining groove, the retaining plate, and the retaining block. The second driver is mounted on the support block. The wire receiving plate is connected to the support block via the second driver and a fixed post. The support blocks are fixedly connected. The second driver drives a pair of drive frames to move a pair of retaining plates closer to or further away from the sides of the adjacent retaining blocks, thereby correspondingly fixing or releasing the wire position. Alternatively, if both the take-up groove and the take-up slot are provided as one, and a vertical plane parallel to the first direction passes through one take-up groove and the take-up slot respectively, the retaining slots provided on each of the pair of retaining plates are opposite to each other. The wire passes through the two retaining slots and then through the pair of retaining plates. The second driver drives a pair of drive frames to move a pair of retaining plates closer to or further away from each other, thereby correspondingly fixing or releasing the wire position. For both the take-up slot and the take-up slot being two or one, when the wiring mechanism is located at the initial wiring position corresponding to the wire after it has been received by the wiring slot, and the second driver drives the pair of holding plates to move relatively close to each other so that the wire position is kept fixed, the third driving cylinder drives the wiring plate and the wire pushing mechanism to move towards the wire clamping mechanism, thereby moving the wiring mechanism to the wire clamping receiving position. After the wire is clamped by the wire clamping mechanism, the second driver drives the pair of holding plates to move relatively away from each other so that the wire position is released from fixation, and the third driving cylinder drives the wiring plate and the wire pushing mechanism to move away from the wire clamping mechanism to return to the initial wiring position.

4. The wire conveying device according to claim 3, characterized in that, The wire clamping mechanism includes a support plate, a first wire clamping plate, and a second wire clamping plate. The first wire clamping plate has two first wire clamping half-holes, and the second wire clamping plate has two second wire clamping half-holes. The first and second wire clamping half-holes are arranged alternately opposite to each other. The first and second wire clamping plates are elastically connected to the support plate through a first elastic member. Under the action of the first elastic member, the first and second wire clamping plates are initially separated from each other, thus forming a first wire passage groove between each pair of adjacent first and second wire clamping half-holes. A pressure roller is provided on the outer side of the first and second wire clamping plates, and a first guide rail is provided on the support plate. A first guide block is provided on the first clamping plate and the second clamping plate respectively, which is slidably connected to the first guide rail. A pressure plate is fixed on each of the two outer surfaces of the support block. When the third driving cylinder drives the support block to move towards the clamping mechanism parallel to the first direction, the two pressure plates press against a guide roller respectively. The first clamping plate and the second clamping plate overcome the elastic force of the corresponding first elastic element and abut against each other, so that each pair of adjacent first clamping half holes and second clamping half holes forms a clamping through hole. At the same time, the third driving cylinder drives the wire that is held in position by a pair of retaining plates to pass through the clamping through hole and be clamped in the clamping through hole.

5. The wire conveying device according to claim 4, characterized in that, The wire clamping mechanism further includes a wire threading assembly, which is disposed between the two wire clamping plates and the terminal block. The wire threading assembly includes a wire threading block, a wire threading detector, and a fourth drive cylinder. The wire threading block is provided with a second wire-passing groove that communicates with the wire threading hole. The number of wire threading holes and the number of wire take-up grooves are the same. The fourth drive cylinder drives the wire threading block to rise and fall to ensure that the wire passes through the wire threading hole and enters the corresponding wire clamping through hole under the drive of the third drive cylinder. Each wire threading hole is equipped with a wire threading detector, which detects whether the wire has accurately passed through the wire threading hole.

6. The wire conveying device according to claim 4, characterized in that, The wire clamping mechanism also includes a fifth drive cylinder and a mounting plate. The mounting plate has a second guide rail on its first side facing the support plate. The support plate has a second guide block that is slidably connected to the second guide rail. The fifth drive cylinder drives the support plate to rise and fall to ensure that the wire is accurately inserted into the corresponding wire clamping through hole. The clamping mechanism includes a third driver and a pair of jaws. The third driver is mounted on the second side of the mounting plate opposite to the first side. The third driver drives the pair of jaws to move closer or further apart, so that when the pair of jaws are closer, they can be used to clamp a workpiece to assemble a wire onto the workpiece. After the wire is assembled onto the workpiece, the pair of jaws move further apart, thereby releasing the workpiece so that it can be transferred.

7. The wire conveying device according to claim 6, characterized in that, The wire feeding mechanism, the wire connecting mechanism, the wire pushing mechanism, the wire clamping mechanism, and the clamping mechanism are all provided in pairs, and each of the different mechanisms constitutes a wire conveying module, and there are two wire conveying modules; The wire conveying device further includes a flipping mechanism, which flips and transfers a workpiece assembled by one wire conveying module to another wire conveying module for reassembly. The flipping mechanism includes a movable plate, a sixth drive cylinder, a rotary driver, a first rotating plate, a second rotating plate, and a clamping assembly. The sixth drive cylinder drives the movable plate to move in a direction parallel to the first direction. The movable plate supports the rotary driver. The second rotating plate is fixed to the first rotating plate. The rotary driver drives the first rotating plate to rotate the second rotating plate, thereby allowing the workpiece clamped by the clamping mechanism of one wire conveying module to be rotated and transferred to the clamping mechanism of the other wire conveying module. The clamping assembly includes a pair of fixedly connected clamping blocks and jaws, and a second elastic element. The second elastic element applies an elastic force to the pair of clamping blocks, causing them to move closer together. The second rotating plate is provided with a third guide rail, the extension direction of which is perpendicular to the extension direction of the first guide rail. Each of the two clamping blocks is connected to the first guide rail via a third guide block. The third guide rail is slidably connected. Each of the two clamping blocks is provided with a force-bearing block. The free ends of the two jaws are provided with tapered wedge-shaped portions. When the two jaws move towards the workpiece clamped by the pair of jaws under the drive of the sixth drive cylinder and the pair of jaws approach each other under the drive of the third driver, while the workpiece is clamped by the pair of jaws, the two force-bearing blocks move away from each other under the action of the inclined surfaces of the two wedge-shaped portions. Thus, the two jaws are located outside the two clamped portions of the workpiece. After the wire is assembled on the workpiece, when the two jaws move away from the workpiece clamped by the pair of jaws under the drive of the sixth drive cylinder and the pair of jaws move away from each other under the drive of the third driver, while the workpiece is released by the pair of jaws, the two force-bearing blocks gradually stop being subjected to the force of the inclined surfaces of the two wedge-shaped portions. Under the action of the elastic force of the second elastic element, the two jaws approach each other and clamp the two clamped portions of the workpiece. The clamped workpiece can be rotated to another wire conveying module.

8. The wire conveying device according to claim 7, characterized in that, The flipping mechanism also includes a third rotating plate and a seventh driving cylinder. The seventh driving cylinder is located at the end of the second rotating plate that is relatively far away from the clamping assembly. When the clamping assembly is rotated to a horizontal position by the rotating driver, the two piston rods of the seventh driving cylinder extend, allowing the wire that has been assembled to the workpiece to enter the vertical gap between the two extended piston rods. As the wire rotates with the workpiece, the two piston rods extend to prevent the wire from deflecting, thereby rotating the clamped workpiece to another wire conveying module so that the wire in the other wire conveying module can be further assembled to the workpiece. The two piston rods then shorten to prepare for the next extension.

9. A liquid level sensor manufacturing apparatus, comprising the wire conveying device as described in any one of claims 1-8.

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