Spring steel wire section shaping device

Abstract

The spring steel wire section shaping device comprises a feeding assembly, a shaping assembly and a pressure control assembly, the feeding assembly is composed of a bottom plate, a driving wheel and a driven wheel and used for conveying a spring steel wire to be shaped, and the driving wheel and the driven wheel are rotationally connected to the upper end of the bottom plate and matched with each other. By arranging the feeding assembly, the intermittent driving mechanism and the like, feeding and shaping can be carried out alternately, the spring steel wire section shaping precision and quality are greatly improved, due to the fact that the feeding and shaping processes are orderly and alternately carried out, interference and conflicts possibly generated when feeding and shaping are carried out at the same time are avoided, and the production efficiency is improved. The spring steel wire shaping device is simple in structure and convenient to operate, solves the problem that traditional shaping equipment cannot effectively shape spring steel wires with the roundness not conforming to specifications, improves product quality and production efficiency, and lubricates the spring steel wires, so that friction between the spring steel wires and all parts in the conveying and shaping process is effectively reduced, and the risk of surface damage is reduced.

Description

Technical Field

[0001] The invention relates to the field of metal wire processing, and in particular to a spring steel wire cross-section shaping device. Background Art

[0002] Traditional spring steel wire needs to be shaped in cross section before manufacturing the spring to prevent large diameter differences that may lead to local breakage. Since traditional shaping equipment has a fixed structure and a single size, it can only produce and shape steel wires of specific sizes into specific shapes, and the equipment has poor passability and flexibility.

[0003] In response to the above problems, China Patent Publication No. "CN113477837A" proposes a spring steel wire cross-section shaping device, which mainly designs an adjusting screw and a scraper. The inner surface of the scraper always slides and rubs against the outer surface of the steel wire. While assisting in cross-section shaping, it can also remove impurities on the outer surface of the steel wire to facilitate secondary processing. However, in this scheme, the roundness of the spring steel wire is not mentioned, and the corresponding technical scheme is not designed to shape the spring steel wire whose roundness does not meet the specifications; secondly, in the process of shaping the cross-section of the spring steel wire, each structure in the device that contacts the steel wire is prone to cause certain damage to the spring steel wire, so it is also necessary to design a lubrication structure to lubricate the spring steel wire before shaping to form a good protective effect on it. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a spring steel wire cross-section shaping device.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A spring steel wire cross-section shaping device comprises a feeding component, a shaping component and a pressure control component.

[0007] The feeding assembly is composed of a bottom plate, a driving wheel and a driven wheel, and is used to convey the spring steel wire to be shaped. The driving wheel and the driven wheel are both rotatably connected to the upper end of the bottom plate and cooperate with each other.

[0008] The shaping assembly consists of a fixed ring, two sets of arc-shaped clips and two sets of connecting rods, which are used to press and shape the spring steel wire. The fixed ring is fixedly connected to the bottom plate. Each set of arc-shaped clips and connecting rods has three in number and are distributed in a circular array along the inner wall of the fixed ring. The two sets of arc-shaped clips and connecting rods are staggered in front and back.

[0009] The pressure control assembly is composed of a hydraulic oil tank, a piston cylinder, a piston and a return spring, and is used to hydraulically control the operation of the shaping assembly. The hydraulic oil tank is fixed to the upper end of the bottom plate through a mounting plate and is connected to the inside of the fixing ring through a hydraulic pipe. The piston seal is slidably connected between the inner wall of the piston cylinder. The return spring is elastically connected between the piston and the end of the piston cylinder. Each connecting rod is fixedly connected between an arc-shaped clip and a piston, and each piston cylinder is connected to the inside of the fixing ring through a conduit.

[0010] The feeding component is driven by an intermittent driving mechanism, and the pressure control component is connected with the intermittent driving mechanism through a pushing mechanism.

[0011] Preferably, the intermittent drive mechanism includes a drive motor, an incomplete gear and a gear. The drive motor is fixedly mounted on the upper end of the base plate and its output shaft is coaxially fixedly connected to the incomplete gear. The gear is coaxially fixedly connected to the driving wheel, and the incomplete gear and the gear are intermittently meshed.

[0012] Preferably, the pushing mechanism includes a rack, a slider plate, a pushing rod and a connecting spring. The rack is slidably mounted on the upper end of the mounting plate through a sliding mechanism and intermittently meshes with the incomplete gear. The slider plate is sealingly and slidably connected between the inner wall of the hydraulic oil tank. The pushing rod is fixedly connected between the rack and the slider plate. The connecting spring is sleeved on the outside of the pushing rod and elastically connected between the rack and the hydraulic oil tank.

[0013] Preferably, the sliding mechanism comprises a sliding groove provided on the upper end of the mounting plate and a sliding block fixedly connected to the lower end of the rack, and the sliding block is slidably connected in the sliding groove.

[0014] Preferably, a lubrication assembly and a lubricating oil tank are also installed on the upper end of the base plate. The lubrication assembly consists of a pump fluid cylinder, a pump fluid piston, a liquid inlet pipe and a liquid outlet pipe, and is used to lubricate the spring steel wire. The pump fluid cylinder is fixed on the upper end of the base plate, and the pump fluid piston is sealingly and slidingly connected between the inner walls of the pump fluid cylinder. The liquid inlet pipe is connected between the pump fluid cylinder and the lubricating oil tank. One end of the liquid outlet pipe is connected to the pump fluid cylinder, and the other end extends to the recessed part of the driving wheel. The pump fluid piston is connected to the incomplete gear through a reciprocating mechanism.

[0015] Preferably, the reciprocating mechanism includes a rotating rod and a reciprocating rod, one end of the rotating rod is rotatably connected to the upper end of the incomplete gear, and the other end is rotatably connected to the end of the reciprocating rod, and the end of the reciprocating rod away from the rotating rod is fixedly connected to the side wall of the pump piston.

[0016] Preferably, a one-way valve is installed in the liquid inlet pipe to allow lubricating oil to flow from the lubricating oil tank to the pump fluid cylinder, and a one-way valve is installed in the liquid outlet pipe to allow lubricating oil to flow from the pump fluid cylinder to the outside.

[0017] Preferably, the surfaces of the driving wheel and the driven wheel are both provided with anti-skid patterns, and the anti-skid patterns are distributed in a staggered grid shape.

[0018] Preferably, the inner wall of the piston cylinder is provided with a wear-resistant coating, which is made of ceramic material and adhered to the inner wall of the piston cylinder by a thermal spraying process.

[0019] The present invention has the following beneficial effects:

[0020] 1. The present invention provides a feeding assembly and an intermittent driving mechanism. The driving motor drives the incomplete gear to rotate. The incomplete gear intermittently meshes with the gear coaxially fixed to the driving wheel, so as to realize the intermittent conveying of the spring steel wire by the driving wheel and the driven wheel. This intermittent driving mode can accurately control the conveying rhythm of the spring steel wire, avoid excessive extrusion or pulling of the steel wire that may be caused by continuous conveying, ensure the stability of the spring steel wire during the conveying process, and provide a good basic condition for subsequent shaping work;

[0021] 2. The present invention provides a pressure control component and a shaping component. Each set of arc-shaped clips and connecting rods are distributed in a circular array along the inner wall of the fixed ring and are staggered front and back. The spring steel wire can be uniformly pressed and shaped from multiple angles. The pressure control component accurately controls the hydraulic pressure according to actual needs, and pushes the arc-shaped clips through the connecting rod to apply appropriate pressure to the spring steel wire to ensure that the cross section of the spring steel wire is effectively shaped, thereby improving the roundness and dimensional accuracy of the spring steel wire, solving the problem that traditional shaping equipment cannot effectively shape the spring steel wire whose roundness does not meet the specifications, and improving product quality and production efficiency.

[0022] 3. In the feeding stage, the intermittent meshing of the incomplete gear and the gear causes the driving wheel and the driven wheel of the feeding assembly to rotate intermittently, stably conveying the spring steel wire to the shaping position. In the shaping stage, as the incomplete gear rotates, the rack intermittently meshing with it drives the pushing mechanism to operate, so that the pressure control component accurately provides hydraulic power for the shaping component to press and clamp the spring steel wire. This alternating feeding and shaping method greatly improves the accuracy and quality of the cross-sectional shaping of the spring steel wire. Since the feeding and shaping processes are alternated in an orderly manner, the interference and conflict that may be caused by the simultaneous feeding and shaping are avoided. During shaping, the spring steel wire is in a relatively static state, and the arc-shaped clamp can accurately clamp it in a stable state, ensuring that the pressure on each part of the spring steel wire is uniform, so that the cross-sectional shaping effect is more ideal, effectively improving the roundness and dimensional accuracy of the spring steel wire, and reducing the shaping error that may be caused by simultaneous operation, providing a strong guarantee for the production of high-quality spring steel wire products.

[0023] 4. The lubrication assembly installed on the upper end of the bottom plate lubricates the spring steel wire through structures such as the pump cylinder, the pump piston, the inlet pipe and the outlet pipe, and cooperates with the lubricating oil tank. The one-way valve in the inlet pipe and the outlet pipe ensures the one-way flow of the lubricating oil to prevent backflow. The pump piston is connected to the incomplete gear through a reciprocating mechanism. As the incomplete gear rotates, the pump piston reciprocates to pump the lubricating oil out of the lubricating oil tank and transport it to the concave part of the driving wheel through the outlet pipe to lubricate the spring steel wire. This effectively reduces the friction between the spring steel wire and the various components during the transportation and shaping process, reduces the risk of surface damage, and plays a good protective role on the spring steel wire. At the same time, it is also beneficial to improve the surface quality after shaping and facilitate subsequent secondary processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a front structural schematic diagram of a spring steel wire cross-section shaping device proposed by the present invention;

[0025] Figure 2 This is a schematic diagram of the back structure of a spring steel wire cross-section shaping device proposed by the present invention;

[0026] Figure 3 A schematic diagram of the connection structure between the incomplete gear and the lubrication assembly proposed by the present invention;

[0027] Figure 4 This is a schematic diagram of the connection structure of the pressure control assembly, the pushing mechanism and the intermittent driving mechanism proposed in the present invention;

[0028] Figure 5 This is a schematic diagram of the structure of the pressure control assembly proposed by the present invention;

[0029] Figure 6 This is a schematic diagram of the internal structure of the piston cylinder proposed in the present invention.

[0030] In the figure: 1, base plate; 2, driving wheel; 3, driven wheel; 4, driving motor; 5, incomplete gear; 6, gear; 7, fixing ring; 8, mounting plate; 9, rack; 10, hydraulic oil tank; 11, hydraulic pipe; 12, pump cylinder; 13, liquid inlet pipe; 14, lubricating oil tank; 15, liquid outlet pipe; 16, piston cylinder; 17, arc-shaped clip; 18, connecting rod; 19, rotating rod; 20, pump piston; 21, reciprocating rod; 22, slide groove; 23, sliding block; 24, slider plate; 25, push rod; 26, connecting spring; 27, guide tube; 28, piston; 29, reset spring. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0032] Embodiment 1

[0033] Reference Figure 1-2 and Figure 4-6 A spring wire cross-section shaping device comprises a feeding component, a shaping component and a pressure control component.

[0034] The feeding assembly is composed of a bottom plate 1, a driving wheel 2 and a driven wheel 3, and is used to convey the spring steel wire to be shaped. The driving wheel 2 and the driven wheel 3 are both rotatably connected to the upper end of the bottom plate 1 and cooperate with each other.

[0035] The shaping assembly is composed of a fixing ring 7, two groups of arc-shaped clips 17 and two groups of connecting rods 18, and is used for pressing and shaping the spring steel wire. The fixing ring 7 is fixedly connected to the bottom plate 1. Each group of arc-shaped clips 17 and connecting rods 18 has three in number and are distributed in a circular array along the inner wall of the fixing ring 7. The two groups of arc-shaped clips 17 and connecting rods 18 are staggered in front and back.

[0036] The pressure control assembly is composed of a hydraulic oil tank 10, a piston cylinder 16, a piston 28 and a return spring 29, and is used to hydraulically control the operation of the shaping assembly. The hydraulic oil tank 10 is fixed to the upper end of the base plate 1 through the mounting plate 8 and is connected to the inside of the fixing ring 7 through the hydraulic pipe 11. The piston 28 is sealingly and slidably connected between the inner wall of the piston cylinder 16. The return spring 29 is elastically connected between the piston 28 and the end of the piston cylinder 16. Each connecting rod 18 is fixedly connected between an arc-shaped clip 17 and a piston 28. Each piston cylinder 16 is connected to the inside of the fixing ring 7 through a conduit 27.

[0037] The feeding assembly is driven by an intermittent driving mechanism, which includes a driving motor 4, an incomplete gear 5 and a gear 6. The driving motor 4 is fixedly mounted on the upper end of the base plate 1 and its output shaft is coaxially fixedly connected to the incomplete gear 5. The gear 6 is coaxially fixedly connected to the driving wheel 2, and the incomplete gear 5 and the gear 6 are intermittently meshed.

[0038] The pressure control assembly is connected to the intermittent drive mechanism through a pushing mechanism, which includes a rack 9, a slider plate 24, a pushing rod 25 and a connecting spring 26. The rack 9 is slidably mounted on the upper end of the mounting plate 8 through a sliding mechanism and intermittently meshes with the incomplete gear 5. The slider plate 24 is sealingly and slidably connected between the inner wall of the hydraulic oil tank 10. The pushing rod 25 is fixedly connected between the rack 9 and the slider plate 24. The connecting spring 26 is sleeved on the outside of the pushing rod 25 and is elastically connected between the rack 9 and the hydraulic oil tank 10.

[0039] The sliding mechanism includes a sliding groove 22 provided at the upper end of the mounting plate 1 and a sliding block 21 fixedly connected to the lower end of the rack 9 , and the sliding block 21 is slidably connected in the sliding groove 22 .

[0040] The surfaces of the driving wheel 2 and the driven wheel 3 are both provided with anti-skid patterns, and the anti-skid patterns are distributed in a staggered grid pattern, which are used to increase the friction between the spring steel wire and ensure that the spring steel wire is not easy to slip during the conveying process, thereby improving the stability and accuracy of the feeding assembly in conveying the spring steel wire.

[0041] The inner wall of the piston cylinder 16 is provided with a wear-resistant coating, which is made of ceramic material and attached to the inner wall of the piston cylinder 16 through a thermal spraying process. It can effectively reduce the wear of the piston 28 when sliding in the piston cylinder 16, extend the service life of the piston cylinder 16 and the piston 28, and thus ensure the stable operation of the pressure control assembly.

[0042] In this embodiment, the driving motor 4 is fixedly mounted on the upper end of the base plate 1 as the power source of the entire device. When the driving motor 4 is started, its output shaft drives the incomplete gear 5 coaxially fixedly connected thereto to rotate, and the incomplete gear 5 is intermittently meshed with the gear 6 coaxially fixedly connected to the driving wheel 2. During the rotation of the incomplete gear 5, when the toothed portion meshes with the gear 6, it drives the gear 6 to rotate, thereby causing the driving wheel 2 to rotate; when the toothless portion of the incomplete gear 5 rotates to a position relative to the gear 6, the gear 6 and the driving wheel 2 stop rotating, thereby realizing the intermittent rotation of the driving wheel 2, providing intermittent conveying power for the feeding assembly.

[0043] During the intermittent rotation of the driving wheel 2, the friction between the driving wheel 2 and the driven wheel 3 is increased due to the mutual cooperation between the driving wheel 2 and the driven wheel 3, as well as the staggered grid-like anti-skid patterns on their surfaces. This enables the spring steel wire to be stably and accurately intermittently transported under the drive of the driving wheel 2 and the driven wheel 3, and each time a certain length of spring steel wire is transported to the shaping component position, preparing for the subsequent shaping work.

[0044] While the incomplete gear 5 rotates, it also intermittently meshes with the rack 9, pushing the rack 9 to slide in the slide groove 22. The sliding of the rack 9 drives the slider plate 24 to slide between the inner walls of the hydraulic oil tank 10 through the push rod 25. At this time, the connecting spring 26 will play a role of buffering and resetting during the movement of the rack 9. The sliding of the slider plate 24 changes the hydraulic state in the hydraulic oil tank 10, and the hydraulic oil is transported to the inside of the fixing ring 7 through the hydraulic pipe 11.

[0045] The fixing ring 7 is fixedly connected to the bottom plate 1, and two groups of arc-shaped clips 17 and two groups of connecting rods 18 are arranged inside the fixing ring 7. Each group of arc-shaped clips 17 and connecting rods 18 has three in number and are arranged in a circular array along the inner wall of the fixing ring 7. The two groups of arc-shaped clips 17 and connecting rods 18 are arranged alternately front and back. Each piston cylinder 16 is connected to the inside of the fixing ring 7 through a conduit 27. The piston 28 is sealingly and slidably connected between the inner wall of the piston cylinder 16. The return spring 29 is elastically connected between the piston 28 and the end of the piston cylinder 16. Each connecting rod 18 is fixedly connected between an arc-shaped clip 17 and a piston 28.

[0046] As the hydraulic oil enters the interior of the fixing ring 7, the hydraulic pressure pushes the piston 28 to slide in the piston cylinder 16, compressing the return spring 29. The movement of the piston 28 drives the arc-shaped clip 17 to approach the spring steel wire through the connecting rod 18 and press and clamp it to shape it. Since the arc-shaped clips 17 are in a circular array and are staggered in front and back, they can press and clamp the spring steel wire evenly from multiple angles to ensure that the cross section of the spring steel wire is accurately shaped.

[0047] When the incomplete gear 5 is disengaged from the rack 9, the rack 9 is reset under the action of the connecting spring 26, and the slider plate 24 is also reset in the hydraulic oil tank 10, the hydraulic pressure is reduced, and under the action of the reset spring 29, the piston 28 is reset, and the arc-shaped clip 17 releases the spring wire.

[0048] Embodiment 2

[0049] Reference Figure 1-3 , which is different from the first embodiment, is that a lubrication assembly and a lubricating oil tank 14 are also installed on the upper end of the base plate 1. The lubrication assembly consists of a pump liquid cylinder 12, a pump liquid piston 20, a liquid inlet pipe 13 and a liquid outlet pipe 15, which are used to lubricate the spring steel wire. The pump liquid cylinder 12 is fixed on the upper end of the base plate 1, and the pump liquid piston 20 is sealingly and slidably connected between the inner walls of the pump liquid cylinder 12. The liquid inlet pipe 13 is communicated between the pump liquid cylinder 12 and the lubricating oil tank 14. One end of the liquid outlet pipe 15 is communicated with the pump liquid cylinder 12, and the other end extends to the concave part of the driving wheel 2. The pump liquid piston 20 is connected to the incomplete gear 5 through a reciprocating mechanism.

[0050] The reciprocating mechanism includes a rotating rod 19 and a reciprocating rod 21. One end of the rotating rod 19 is rotatably connected to the upper end of the incomplete gear 5, and the other end is rotatably connected to the end of the reciprocating rod 21. The end of the reciprocating rod 21 away from the rotating rod 19 is fixedly connected to the side wall of the pump piston 20.

[0051] A one-way valve for allowing lubricating oil to flow from the lubricating oil tank 14 to the pump fluid cylinder 12 is installed in the liquid inlet pipe 13, and a one-way valve for allowing lubricating oil to flow from the pump fluid cylinder 12 to the outside world is installed in the liquid outlet pipe 15.

[0052] In this embodiment, when the driving motor 4 drives the incomplete gear 5 to rotate, the incomplete gear 5 not only completes the above-mentioned feeding and pressure control actions, but also drives the lubrication component to work through the reciprocating mechanism. One end of the rotating rod 19 is rotatably connected to the upper end of the incomplete gear 5. As the incomplete gear 5 rotates, the rotating rod 19 performs a circular motion around the connection point, and the other end of the rotating rod 19 is rotatably connected to the end of the reciprocating rod 21. This connection mode converts the circular motion of the rotating rod 19 into the reciprocating linear motion of the reciprocating rod 21. The end of the reciprocating rod 21 away from the rotating rod 19 is fixedly connected to the side wall of the pumping piston 20, thereby driving the pumping piston 20 to perform a sealed reciprocating sliding between the inner walls of the pumping cylinder 12.

[0053] During the reciprocating motion of the pump piston 20, when the pump piston 20 moves away from the lubricating oil tank 14, negative pressure is formed in the pump cylinder 12. At this time, the one-way valve in the liquid inlet pipe 13 is opened, and the lubricating oil flows from the lubricating oil tank 14 through the liquid inlet pipe 13 into the pump cylinder 12 under the action of atmospheric pressure.

[0054] When the pump piston 20 moves toward the direction close to the lubricating oil tank 14, the lubricating oil in the pump cylinder 12 is squeezed and the pressure increases. At this time, the one-way valve in the liquid outlet pipe 15 is opened, and the one-way valve in the liquid inlet pipe 13 is closed to prevent the lubricating oil from flowing back. Thus, the lubricating oil in the pump cylinder 12 is squeezed out through the liquid outlet pipe 15, and the other end of the liquid outlet pipe 15 extends to the concave part of the driving wheel 2, where the lubricating oil drips onto the spring steel wire, thereby achieving lubrication of the spring steel wire.

[0055] During the operation of the entire device, as the incomplete gear 5 continues to rotate, the pump piston 20 continuously reciprocates, and the lubricating oil is continuously delivered to the surface of the spring steel wire from the lubricating oil tank 14. This lubrication effectively reduces the friction between the spring steel wire and the driving wheel 2 and the driven wheel 3 during the delivery process, and also reduces the friction between the spring steel wire and the arc-shaped clip 17 during the shaping process, avoiding damage to the surface of the spring steel wire due to excessive friction, improving the surface quality of the spring steel wire, and providing better conditions for subsequent processing and use.

[0056] In summary, the newly added lubrication component works together with the device's original feeding component, shaping component and pressure control component to further improve the overall performance and processing quality of the spring steel wire cross-section shaping device.

[0057] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A spring wire cross-section shaping device, comprising a feeding assembly, a shaping assembly and a pressure control assembly, characterized in that: The feeding assembly is composed of a bottom plate (1), a driving wheel (2) and a driven wheel (3), and is used to convey the spring steel wire to be shaped. The driving wheel (2) and the driven wheel (3) are both rotatably connected to the upper end of the bottom plate (1) and cooperate with each other. The shaping assembly is composed of a fixing ring (7), two groups of arc-shaped clips (17) and two groups of connecting rods (18), and is used for pressing and shaping the spring steel wire. The fixing ring (7) is fixedly connected to the base plate (1). Each group of arc-shaped clips (17) and connecting rods (18) has three pieces and are arranged in a circular array along the inner wall of the fixing ring (7). The two groups of arc-shaped clips (17) and connecting rods (18) are arranged in a staggered manner in the front and rear. The pressure control assembly is composed of a hydraulic oil tank (10), a piston cylinder (16), a piston (28) and a return spring (29), and is used to hydraulically control the operation of the shaping assembly. The hydraulic oil tank (10) is fixed to the upper end of the base plate (1) through a mounting plate (8) and is connected to the interior of the fixing ring (7) through a hydraulic pipe (11). The piston (28) is sealingly and slidably connected between the inner wall of the piston cylinder (16). The return spring (29) is elastically connected between the piston (28) and the end of the piston cylinder (16). Each connecting rod (18) is fixedly connected between an arc-shaped clip (17) and a piston (28). Each piston cylinder (16) is connected to the interior of the fixing ring (7) through a guide tube (27). The feeding component is driven by an intermittent driving mechanism, and the pressure control component is connected with the intermittent driving mechanism through a pushing mechanism.

2. A spring wire cross-section shaping device according to claim 1, characterized in that: The intermittent drive mechanism comprises a drive motor (4), an incomplete gear (5) and a gear (6); the drive motor (4) is fixedly mounted on the upper end of the base plate (1) and its output shaft is coaxially fixedly connected to the incomplete gear (5); the gear (6) is coaxially fixedly connected to the driving wheel (2); and the incomplete gear (5) and the gear (6) are intermittently meshed.

3. A spring wire cross-section shaping device according to claim 2, characterized in that: The pushing mechanism comprises a rack (9), a slider plate (24), a pushing rod (25) and a connecting spring (26); the rack (9) is slidably mounted on the upper end of the mounting plate (8) through the sliding mechanism and intermittently meshes with the incomplete gear (5); the slider plate (24) is sealingly slidably connected between the inner wall of the hydraulic oil tank (10); the pushing rod (25) is fixedly connected between the rack (9) and the slider plate (24); and the connecting spring (26) is sleeved outside the pushing rod (25) and elastically connected between the rack (9) and the hydraulic oil tank (10).

4. A spring wire cross-section shaping device according to claim 3, characterized in that: The sliding mechanism comprises a sliding groove (22) provided at the upper end of the mounting plate (1) and a sliding block (21) fixedly connected to the lower end of the rack (9), wherein the sliding block (21) is slidably connected in the sliding groove (22).

5. A spring wire cross-section shaping device according to claim 2, characterized in that: A lubrication assembly and a lubricating oil tank (14) are also installed at the upper end of the base plate (1). The lubrication assembly consists of a pump cylinder (12), a pump piston (20), a liquid inlet pipe (13) and a liquid outlet pipe (15), and is used to lubricate the spring steel wire. The pump cylinder (12) is fixed to the upper end of the base plate (1). The pump piston (20) is sealingly and slidably connected between the inner wall of the pump cylinder (12). The liquid inlet pipe (13) is connected between the pump cylinder (12) and the lubricating oil tank (14). One end of the liquid outlet pipe (15) is connected to the pump cylinder (12), and the other end extends to the inner concave part of the driving wheel (2). The pump piston (20) is connected to the incomplete gear (5) through a reciprocating mechanism.

6. A spring wire cross-section shaping device according to claim 5, characterized in that: The reciprocating mechanism comprises a rotating rod (19) and a reciprocating rod (21). One end of the rotating rod (19) is rotatably connected to the upper end of the incomplete gear (5), and the other end is rotatably connected to the end of the reciprocating rod (21). One end of the reciprocating rod (21) away from the rotating rod (19) is fixedly connected to the side wall of the pump piston (20).

7. A spring wire cross-section shaping device according to claim 5, characterized in that: A one-way valve is installed in the liquid inlet pipe (13) to allow lubricating oil to flow from the lubricating oil tank (14) to the pump fluid cylinder (12), and a one-way valve is installed in the liquid outlet pipe (15) to allow lubricating oil to flow from the pump fluid cylinder (12) to the outside.

8. A spring wire cross-section shaping device according to claim 1, characterized in that: The surfaces of the driving wheel (2) and the driven wheel (3) are both provided with anti-skid patterns, and the anti-skid patterns are distributed in a staggered grid shape.

9. A spring wire cross-section shaping device according to claim 1, characterized in that: The inner wall of the piston cylinder (16) is provided with a wear-resistant coating, which is made of a ceramic material and is attached to the inner wall of the piston cylinder (16) by a thermal spraying process.

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