A tensile spring device and a method of processing the same

Abstract

The application discloses a kind of tensile spring equipment and its processing method, tensile spring equipment includes carrier, backing plate, vertical rod, cross ring and drive mechanism, heating assembly is installed on carrier, backing plate is set on the table plate of carrier, can be rotated and adjusted on carrier by rotary assembly, backing plate is provided with expansion and contraction assembly, expansion and contraction assembly includes multiple vertical boards slidably connected with backing plate, multiple vertical boards are arc-shaped plate and are evenly distributed in circumference, vertical rod is movably arranged on the beam plate of carrier, vertical rod is fixedly connected with top block, first hook capable of pulling the top of spring is arranged on top block, vertical rod can be contacted with expansion and contraction assembly by moving assembly, second hook capable of pulling the bottom of spring is arranged on cross ring, drive mechanism is connected with vertical rod by movable assembly;The application is abutted and corrected to spring after heating, and the spring is stretched, the spring is further contacted with the vertical board after stretching, so that the twisted and bent part of the spring is restored under the expansion force of multiple vertical boards by stretching, and the correction effect is good.

Description

Technical Field

[0001] This invention relates to the field of spring processing technology, specifically to a tension spring device and its processing method. Background Technology

[0002] Springs are widely used in daily life and various equipment. They are mechanical parts that work by utilizing elasticity. They can deform under the action of external force and return to their original shape after the external force is removed.

[0003] After processing and forming, springs may become twisted or skewed due to lateral compression. During quality inspection, they will be rejected as defective products. Current stretching methods can only correct springs with minor twisting. They cannot effectively correct springs with major twisting or those that bend inward. Therefore, this invention proposes a stretching spring device and its processing method that can solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to provide a tension spring device and its processing method to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a tension spring device and its processing method, comprising:

[0006] A frame on which a heating element is mounted for heating the spring;

[0007] A pad is provided on the platform of the carrier frame and can be rotated and adjusted on the carrier frame by a rotary assembly. The pad is provided with an expansion and contraction assembly, which includes multiple vertical plates that slide in contact with the pad. The multiple vertical plates are all arc-shaped plates and are evenly distributed circumferentially.

[0008] The upright is movably mounted on the beam plate of the carrier frame. A top block is fixed to the upright, and a first hook that can pull the top of the spring is provided on the top block. The upright can contact the expansion and contraction assembly through the moving component.

[0009] A horizontal ring, on which a second hook is provided at the bottom of the pull spring;

[0010] The drive mechanism is connected to the upright through a movable component. The drive mechanism is used to drive the spring to move vertically and can also drive the spring to be sleeved on the expansion and contraction component for stretching and correction.

[0011] As a preferred technical solution of the present invention, the pad is provided with a ring body that is wound around multiple vertical plates. The ring body is elastic and can cause the multiple vertical plates to expand and then return to their original position.

[0012] As a preferred embodiment of the present invention, the driving mechanism includes at least one set of telescopic sources mounted on the beam plate, the movable end of the telescopic source being connected to a lifting rod, and the lifting rod extending downward to connect with the horizontal ring.

[0013] As a preferred technical solution of the present invention, the moving component includes an inclined surface disposed on the inner side of each vertical plate and multiple sets of moving blocks disposed at the bottom of the upright. The moving blocks can contact the inclined surface, so that when the upright moves downward, the moving blocks can contact the inclined surface and expand the multiple vertical plates outward to contact the spring.

[0014] As a preferred technical solution of the present invention, the multiple sets of inclined surfaces are all arc-shaped structures and can be spliced ​​together to form a bucket with one end open upwards. The moving block is a bead-shaped structure, and the moving block makes rolling contact with the inclined surface.

[0015] As a preferred technical solution of the present invention, the movable component includes a straight groove formed on the lifting rod, an elastic element is provided in the straight groove, and a movable rod is slidably connected thereto. One end of the movable rod is connected to the elastic element, and the other end is connected to the upright rod. The spring maintains its original length when heated.

[0016] As a preferred technical solution of the present invention, each set of inclined surfaces is provided with an inwardly extending support plate at the bottom. When the moving block moves to the bottom of the inclined surface, it can abut against the support plate, and the lifting rod moves downward to stretch the horizontal spring.

[0017] As a preferred embodiment of the present invention, the rotary assembly includes a rotation source mounted on the platform and a gear ring disposed on the outer side of the pad. The output end of the rotation source is connected to a drive tooth, which meshes with the gear ring.

[0018] The present invention also provides a method for processing a tension spring, specifically including the following steps:

[0019] S1. Connect the top of the spring to the first hook on the upright and the bottom of the spring to the second hook on the horizontal ring, while maintaining the original length.

[0020] S2. The drive mechanism drives the horizontal ring and the vertical rod to move upward synchronously, so that the spring enters the heating area of ​​the heating component for heating;

[0021] S3. After heating is completed, the drive mechanism drives the horizontal ring and the vertical pole to move downward synchronously, causing the spring to be sleeved on the expansion and contraction assembly. When the vertical pole moves downward, it drives multiple vertical plates to expand outward through the moving assembly, and corrects the heated spring by contact.

[0022] S4. When the upright moves downward, it is limited by the moving component. The horizontal ring stretches the spring downward. After the spring is extended, it comes into contact with the expanded vertical plate, so that the twisted and bent part of the spring is restored by stretching and unfolding under the tension of multiple vertical plates.

[0023] S5. Repeat steps S2-S4 in sequence to correct the spring. Each time, the pad is rotated on the carrier by the rotary assembly to adjust the spring so that the vertical plate expands and can press against different positions of the spring until the spring is completely corrected.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows: After the spring is heated, it is driven to be sleeved on the expansion and contraction assembly. When the upright moves downward, it drives multiple vertical plates to expand outward through the moving assembly, which corrects the heated spring by contact. After the upright is limited by the moving assembly, the horizontal ring stretches the spring downward through the movable assembly. After the spring is extended, it further contacts the expanded vertical plates, so that the twisted and bent parts of the spring are restored by stretching and unfolding under the tension of multiple vertical plates, resulting in a good correction effect.

[0025] By setting the moving block to have a bead-shaped structure and an inclined arc-shaped structure, the rotation source can drive the pad to rotate. When the pad rotates, it drives multiple vertical plates to roll and contact the moving block to rotate and adjust on the carrier. During each correction operation, the vertical plates expand and can abut against different positions of the spring, avoiding any parts of the vertical plates that are not in contact with the spring after they expand, thus achieving full contact correction of the spring and further improving the correction effect of the spring. Attached Figure Description

[0026] Figure 1 This is a side view of the overall structure of the present invention from one direction;

[0027] Figure 2 This is a side view of the overall structure of the present invention from another direction;

[0028] Figure 3 This is a schematic diagram of the first hook, the second hook, and the traction spring of the present invention;

[0029] Figure 4 This is a schematic diagram of the rotating component structure of the present invention;

[0030] Figure 5 This is a schematic diagram of the active component structure of the present invention;

[0031] Figure 6 This is a schematic diagram showing the positional relationship between the gasket and the expansion / contraction component of the present invention;

[0032] Figure 7 This is a schematic diagram of the expansion and contraction component structure of the present invention;

[0033] Figure 8 This is a schematic diagram of the moving block structure of the present invention;

[0034] Figure 9 This is a schematic diagram of the structure of the mobile component of the present invention;

[0035] In the diagram: 100, carrier frame; 110, beam plate; 120, platform plate; 200, heating component; 300, pad plate; 310, rotary component; 311, rotation source; 312, gear ring; 313, drive gear; 320, expansion and contraction component; 321, vertical plate; 322, inclined plane; 323, support plate; 330, ring body; 400, upright; 410, top block; 420, first hook; 430, moving block; 500, horizontal ring; 510, second hook; 600, drive mechanism; 610, telescopic source; 620, lifting rod; 630, movable component; 631, straight groove; 632, elastic element; 633, moving rod. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example 1

[0037] Please see Figure 1-9 The present invention provides a technical solution: a tension spring device, including a carrier frame 100, a pad 300, a vertical rod 400, a horizontal coil 500 and a drive mechanism 600. A heating component 200 is installed on the carrier frame 100 for heating the spring. The heating component 200 is a coil. The spring enters the coil. After the coil is energized, it generates a changing alternating magnetic field. When the alternating magnetic lines of force in the magnetic field pass through the spring, countless small eddy currents are generated, causing the spring to heat up rapidly.

[0038] Please see Figure 1 , Figure 2 , Figure 7 The pad 300 is set on the platform 120 of the carrier 100 and can be rotated and adjusted on the carrier 100 by the rotating assembly 310. The pad 300 is provided with an expansion and contraction assembly 320, which includes multiple vertical plates 321 that slide in contact with the pad 300. The multiple vertical plates 321 are all arc-shaped plates and are evenly distributed in the circumference. The multiple vertical plates 321 can be spliced ​​into a cylindrical structure with a diameter smaller than that of the spring spindle, so that the spring can be smoothly fitted onto the expansion and contraction assembly 320.

[0039] Please see Figure 1 , Figure 2 , Figure 3The upright 400 is movably mounted on the beam plate 110 of the carrier 100. A top block 410 is fixed to the upright 400. The top block 410 is provided with a first hook 420 that can pull the top of the spring. The upright 400 can contact the expansion and contraction assembly 320 through the moving component. A second hook 510 that can pull the bottom of the spring is provided on the horizontal ring 500. The drive mechanism 600 is connected to the upright 400 through the moving component 630. The drive mechanism 600 is used to drive the vertical displacement of the spring and can drive the spring to be sleeved on the expansion and contraction assembly 320 for stretching and correction. The distance between the first hook 420 and the second hook 510 is adapted to the length of the spring so that the spring maintains its original length after being hooked. When the upright 400 moves upward, it can drive the spring into the coil for heating. When the upright 400 moves downward, it can drive the expansion and contraction assembly 320 to move through the moving component, so that multiple sets of vertical plates 321 expand outward and abut against the heated spring for correction.

[0040] During operation, the spring is positioned so that its top is connected to the first hook 420 on the upright 400 and its bottom is connected to the second hook 510 on the horizontal ring 500. The drive mechanism 600 drives the horizontal ring 500 and the upright 400 to move upward synchronously, allowing the spring to enter the heating area of ​​the heating component 200 for heating. After heating is completed, the drive mechanism 600 then drives the horizontal ring 500 and the upright 400 to move downward synchronously, causing the spring to engage with the expansion and contraction component 320. As the upright 400 moves downward, it causes multiple vertical plates 321 to expand outward through the moving component. After the heated spring is abutted and corrected, and the upright 400 is limited by the moving component, the horizontal ring 500 pulls the spring downward through the moving component 630. After the spring is extended, it comes into contact with the expanded vertical plate 321, so that the twisted and bent parts of the spring are restored by stretching and unfolding under the tension of multiple vertical plates 321. The correction process is repeated many times. During each correction, the pad 300 is driven to rotate and adjust on the carrier 100 by the rotary component 310, so that the vertical plate 321 expands and abuts against different positions of the spring until the spring is completely corrected. Example 2

[0041] Based on Example 1, please refer to Figure 1 , Figure 2 , Figure 3 The drive mechanism 600 includes at least one set of telescopic sources 610 mounted on the beam plate 110. The movable end of the telescopic source 610 is connected to a lifting rod 620. The lifting rod 620 extends downward and connects to the horizontal ring 500. The telescopic source 610 is preferably a hydraulic cylinder. The telescopic source 610 can drive the lifting rod 620 to move vertically. When moving upward, it drives the spring into the heating assembly 200 for heating. When moving downward, it drives the heated spring to be sleeved on the expansion and contraction assembly 320.

[0042] Please see Figure 6 , Figure 7 , Figure 8, Figure 9 The moving component includes an inclined surface 322 disposed on the inner side of each vertical plate 321 and multiple sets of moving blocks 430 disposed at the bottom of the upright 400. The moving blocks 430 can contact the inclined surface 322, so that when the upright 400 moves downward, the moving blocks 430 can contact the inclined surface 322 and expand the multiple vertical plates 321 outward to contact the spring. The top width of the inclined surface 322 is smaller than the bottom width, so that when the upright 400 moves downward, the contact between the moving blocks 430 and the inclined surface 322 pushes the vertical plates 321 outward, so that the spring that has been heated and is sleeved on the expansion and contraction component 320 is subjected to the outward pushing force of the vertical plates 321, which effectively corrects the spring with a large degree of twisting and bending inward.

[0043] Please see Figure 1 , Figure 2 , Figure 5 The movable component 630 includes a straight groove 631 formed on the lifting rod 620. An elastic element 632 is disposed within the straight groove 631, and a movable rod 633 is slidably connected thereto. The elastic element 632 may be a rubber elastic sleeve. One end of the movable rod 633 is connected to the elastic element 632, and the other end is connected to the upright rod 400. The spring maintains its original length when heated. Each set of inclined surfaces 322 has an inwardly extending support plate 323 at its bottom. When the movable block 430 moves to the bottom of the inclined surface 322, it can abut against the support plate 323. The downward movement of the lifting rod 620 stretches the spring in the transverse ring 500. During the downward movement of the upright rod 400 driven by the telescopic source 610 through the lifting rod 620, the upright rod 40... The heated spring moves downward and engages with the expansion and contraction assembly 320. The moving assembly causes the multiple vertical plates 321 of the expansion and contraction assembly 320 to laterally expand and correct the heated spring until the moving block 430 of the moving assembly abuts against the support plate 323. The upright rod 400 stops moving downward due to the limiting effect of the support plate 323. At this time, the lifting rod 620 drives the horizontal ring 500 to continue moving downward under the drive of the telescopic source 610. The downward movement of the lifting rod 620 causes the horizontal ring 500 to stretch the spring. After the spring is stretched, it comes into contact with the expanded vertical plate 321, so that the twisted and bent parts of the spring are restored by stretching and unfolding under the tension of the multiple vertical plates 321, resulting in a good correction effect. Example 3

[0044] Based on Example 1, please refer to Figure 1 , Figure 2 , Figure 3The drive mechanism 600 includes at least one set of telescopic sources 610 mounted on the beam plate 110. The movable end of the telescopic source 610 is connected to a lifting rod 620. The lifting rod 620 extends downward and connects to the horizontal ring 500. The telescopic source 610 is preferably a hydraulic cylinder. The telescopic source 610 can drive the lifting rod 620 to move vertically. When moving upward, it drives the spring into the heating assembly 200 for heating. When moving downward, it drives the heated spring to be sleeved on the expansion and contraction assembly 320.

[0045] Please see Figure 6 , Figure 7 , Figure 8 , Figure 9 The moving component includes an inclined surface 322 disposed on the inner side of each vertical plate 321 and multiple sets of moving blocks 430 disposed at the bottom of the upright 400. The moving blocks 430 can contact the inclined surface 322, so that when the upright 400 moves downward, the moving blocks 430 can contact the inclined surface 322 and expand the multiple vertical plates 321 outward to contact the spring. The top width of the inclined surface 322 is smaller than the bottom width, so that when the upright 400 moves downward, the contact between the moving blocks 430 and the inclined surface 322 pushes the vertical plates 321 outward, so that the spring that has been heated and is sleeved on the expansion and contraction component 320 is subjected to the outward pushing force of the vertical plates 321, which effectively corrects the spring with a large degree of twisting and bending inward.

[0046] Please see Figure 6 , Figure 7 , Figure 8 , Figure 9 Multiple inclined planes 322 are all arc-shaped structures and can be spliced ​​together to form a bucket with one large end opening upwards. The moving block 430 has a bead-shaped structure, including a ball bearing seat and balls. When the moving block 430 contacts the inclined plane 322, it is in rolling contact. The rotating assembly 310 includes a rotating source 311 mounted on the platform 120 and a gear ring 312 disposed on the outside of the pad 300. The output end of the rotating source 311 is connected to an active gear 313, which meshes with the gear ring 312. The rotating source 311 is preferably a servo motor. The spring's single correction operation is as follows: the heating assembly 200 heats it, and the expansion and contraction assembly 320 expands it outwards. The movable component 630 is stretched by the upright 400; during actual correction, multiple correction operations are performed. The movable block 430 is a bead-shaped structure and the inclined surface 322 is an arc-shaped structure. The rotation source 311 can drive the pad 300 to rotate. When the pad 300 rotates, it drives multiple vertical plates 321 to roll and contact the movable block 430 to rotate and adjust on the carrier 100. During each correction operation, the vertical plates 321 expand and can abut against different positions of the spring, avoiding the presence of parts of the multiple vertical plates 321 that are not in contact with the spring after they expand, thus achieving full contact correction of the spring and further improving the correction effect of the spring. Example 4

[0047] Based on Example 1, please refer to Figure 1 , Figure 2 , Figure 3 The moving component includes an inclined surface 322 disposed on the inner side of each vertical plate 321 and multiple sets of moving blocks 430 disposed at the bottom of the upright 400. The moving blocks 430 can contact the inclined surface 322, so that when the upright 400 moves downward, the moving blocks 430 can contact the inclined surface 322 and expand the multiple vertical plates 321 outward to contact the spring. The top width of the inclined surface 322 is smaller than the bottom width, so that when the upright 400 moves downward, the contact between the moving blocks 430 and the inclined surface 322 pushes the vertical plates 321 outward, so that the spring that has been heated and is sleeved on the expansion and contraction component 320 is subjected to the outward pushing force of the vertical plates 321, which effectively corrects the spring with a large degree of twisting and bending inward.

[0048] Please see Figure 6 , Figure 7 , Figure 8 , Figure 9 The movable component 630 includes a straight groove 631 formed on the lifting rod 620. An elastic element 632 is disposed within the straight groove 631, and a movable rod 633 is slidably connected thereto. The elastic element 632 may be made of a rubber elastic sleeve. One end of the movable rod 633 is connected to the elastic element 632, and the other end is connected to the upright rod 400. The spring maintains its original length when heated. Each set of inclined surfaces 322 has an inwardly extending support plate 323 at its bottom. When the movable block 430 moves to the bottom of the inclined surface 322, it can abut against the support plate 323, causing the upright rod 400 to stretch the elastic element 632 relative to the transverse ring 500 and extend the spring via the movable rod 633. During the downward movement of the upright rod 400 driven by the telescopic source 610 through the lifting rod 620, the upright rod 400... The heated spring moves downward and fits onto the expansion and contraction assembly 320. The moving assembly causes the multiple vertical plates 321 of the expansion and contraction assembly 320 to laterally expand and correct the heated spring until the moving block 430 of the moving assembly abuts against the support plate 323. The upright 400 stops moving downward due to the limiting effect of the support plate 323. At this time, the lifting rod 620 drives the horizontal ring 500 to continue moving downward under the drive of the telescopic source 610. The upright 400 stretches the elastic element 632 relative to the horizontal ring 500 and stretches the spring through the moving rod 633. After the spring is stretched, it comes into contact with the expanded vertical plate 321, so that the twisted and bent parts of the spring are restored by stretching and unfolding under the tension of the multiple vertical plates 321, resulting in a good correction effect.

[0049] Please see Figure 6 , Figure 7 , Figure 8 , Figure 9Multiple inclined planes 322 are all arc-shaped structures and can be spliced ​​together to form a bucket with one large end opening upwards. The moving block 430 has a bead-shaped structure, including a ball bearing seat and balls. When the moving block 430 contacts the inclined plane 322, it is in rolling contact. The rotating assembly 310 includes a rotating source 311 mounted on the platform 120 and a gear ring 312 disposed on the outside of the pad 300. The output end of the rotating source 311 is connected to an active gear 313, which meshes with the gear ring 312. The rotating source 311 is preferably a servo motor. The spring's single correction operation is as follows: the heating assembly 200 heats it, and the expansion and contraction assembly 320 expands it outwards. The movable component 630 is stretched by the upright 400; during actual correction, multiple correction operations are performed. The movable block 430 is a bead-shaped structure and the inclined surface 322 is an arc-shaped structure. The rotation source 311 can drive the pad 300 to rotate. When the pad 300 rotates, it drives multiple vertical plates 321 to roll and contact the movable block 430 to rotate and adjust on the carrier 100. During each correction operation, the vertical plates 321 expand and can abut against different positions of the spring, avoiding the presence of parts of the multiple vertical plates 321 that are not in contact with the spring after they expand, thus achieving full contact correction of the spring and further improving the correction effect of the spring. Example 5

[0050] Based on any one of embodiments 1-4, please refer to Figure 2 , Figure 4 , Figure 9 The pad 300 is provided with a ring 330 wrapped around multiple vertical plates 321. The ring 330 is elastic, which allows the multiple vertical plates 321 to expand and then return to their original position. The ring 330 is made of rubber or other materials with excellent elastic properties. When the upright 400 moves downward and contacts the inclined surface 322 of the vertical plate 321 through the moving block 430, the multiple vertical plates 321 expand, causing the ring 330 to be stretched and its circumference to increase. When the upright 400 moves upward, the multiple vertical plates 321 automatically return to their original position under the elasticity of the ring 330, without the need for manual operation. This allows the next set of springs to be corrected to be driven by the mechanism 600 to be fitted onto the expansion and contraction assembly 320 for correction, which is highly practical. Example 6

[0051] A method for processing a tension spring specifically includes the following steps:

[0052] S1. Connect the top of the spring to the first hook 420 on the upright 400, and connect the bottom of the spring to the second hook 510 on the horizontal ring 500, while maintaining the original length.

[0053] S2. The drive mechanism 600 drives the horizontal ring 500 and the vertical rod 400 to move upward synchronously, so that the spring enters the heating area of ​​the heating component 200 for heating.

[0054] S3. After heating is completed, the drive mechanism 600 drives the horizontal ring 500 and the vertical rod 400 to move downwards synchronously, causing the spring to be sleeved on the expansion and contraction assembly 320. When the vertical rod 400 moves downwards, it drives multiple vertical plates 321 to expand outwards through the moving assembly, and corrects the heated spring by contact.

[0055] S4. When the upright 400 moves downward, it is limited by the moving component. The horizontal ring 500 stretches the spring downward. After the spring is stretched, it comes into contact with the expanded vertical plate 321, so that the twisted and bent part of the spring is restored by stretching and unfolding under the tension of multiple vertical plates 321.

[0056] S5. Repeat steps S2-S4 in sequence to correct the spring. Each time, the rotating assembly 310 drives the pad 300 to rotate and adjust on the carrier 100, so that the vertical plate 321 expands and can be pressed against different positions of the spring until the spring is completely corrected.

[0057] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tension spring device, characterized in that, include: A frame on which a heating element is mounted for heating the spring; A pad is provided on the platform of the carrier frame and can be rotated and adjusted on the carrier frame by a rotary assembly. The pad is provided with an expansion and contraction assembly, which includes multiple vertical plates that slide in contact with the pad. The multiple vertical plates are all arc-shaped plates and are evenly distributed circumferentially. The upright is movably mounted on the beam plate of the carrier frame. A top block is fixed to the upright, and a first hook that can pull the top of the spring is provided on the top block. The upright can contact the expansion and contraction assembly through the moving component. A horizontal ring, on which a second hook is provided at the bottom of the pull spring; The drive mechanism is connected to the upright through a movable component. The drive mechanism is used to drive the spring to move vertically and can also drive the spring to be sleeved on the expansion and contraction component for stretching and correction. The drive mechanism includes at least one set of telescopic sources mounted on the beam plate, the movable end of the telescopic source is connected to a lifting rod, and the lifting rod extends downward to connect with the cross ring; The moving component includes an inclined surface disposed on the inner side of each vertical plate and multiple sets of moving blocks disposed at the bottom of the upright. The moving blocks can contact the inclined surface, so that when the upright moves downward, the moving blocks can contact the inclined surface and expand the multiple vertical plates outward to contact the spring. The multiple sets of inclined surfaces are all arc-shaped structures and can be spliced ​​together to form a bucket with one large end opening upwards. The moving block has a bead-shaped structure and makes rolling contact with the inclined surface when the moving block contacts the inclined surface. The movable component includes a straight groove formed on the lifting rod, an elastic element is provided in the straight groove, and a movable rod is slidably connected thereto. One end of the movable rod is connected to the elastic element, and the other end is connected to the upright rod. The spring maintains its original length when heated. Each set of inclined planes has an inwardly extending support plate at the bottom. When the moving block moves to the bottom of the inclined plane, it can abut against the support plate. The lifting rod moves downward to stretch the horizontal spring. During the downward movement of the upright pole driven by the telescopic source via the lifting rod, the upright pole drives the heated spring to move downward and engage with the expansion and contraction assembly. The moving assembly causes the multiple vertical plates of the expansion and contraction assembly to laterally expand and correct the heated spring until the moving block of the moving assembly abuts against the support plate. The upright pole stops moving downward due to the limiting effect of the support plate. At this time, the lifting rod drives the horizontal ring to continue moving downward under the drive of the telescopic source. The downward movement of the lifting rod causes the horizontal ring to stretch the spring. After the spring is stretched, it further contacts the expanded vertical plate, allowing the twisted and bent parts of the spring to recover under the tension of the multiple vertical plates through stretching and unfolding.

2. The tension spring device according to claim 1, characterized in that, The pad is provided with a ring that is wrapped around multiple vertical plates. The ring is elastic and can cause the multiple vertical plates to expand and then return to their original position.

3. The tension spring device according to claim 1, characterized in that, The rotary assembly includes a rotation source mounted on the platform and a gear ring disposed on the outside of the pad. The output end of the rotation source is connected to a drive tooth, which meshes with the gear ring.

4. The method for processing a tension spring in a tension spring device according to any one of claims 1-3, characterized in that, Specifically, it includes the following steps: S1. Connect the top of the spring to the first hook on the upright and the bottom of the spring to the second hook on the horizontal ring, while maintaining the original length. S2. The drive mechanism drives the horizontal ring and the vertical rod to move upward synchronously, so that the spring enters the heating area of ​​the heating component for heating; S3. After heating is completed, the drive mechanism drives the horizontal ring and the vertical pole to move downward synchronously, causing the spring to be sleeved on the expansion and contraction assembly. When the vertical pole moves downward, it drives multiple vertical plates to expand outward through the moving assembly, and corrects the heated spring by contact. S4. When the upright moves downward, it is limited by the moving component. The horizontal ring stretches the spring downward. After the spring is extended, it comes into contact with the expanded vertical plate, so that the twisted and bent part of the spring is restored by stretching and unfolding under the tension of multiple vertical plates. S5. Repeat steps S2-S4 in sequence to correct the spring. Each time, the pad is rotated on the carrier by the rotary assembly to adjust the spring so that the vertical plate expands and can press against different positions of the spring until the spring is completely corrected.

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