Phosphating equipment for spring steel wire of automobile seat and treatment process of phosphating equipment

Abstract

The invention relates to the technical field of spring steel wire phosphorization, in particular to automobile seat spring steel wire phosphorization equipment and a treatment process thereof.The automobile seat spring steel wire phosphorization equipment comprises a phosphorization tank, a storage tank for storing a to-be-used phosphorization agent is arranged at one end of the phosphorization tank, overflow holes are formed in a shell at the other end of the phosphorization tank, and a row of wiring devices are arranged in the phosphorization tank; a spring steel wire is conveyed on each wiring device, each wiring device comprises an impact barrel tool, a turning roller, a bottom frame, a braking part and a material conveying tool, the spring steel wires are soaked in a phosphating agent liquid for phosphating, an impact box moves around the spring steel wires, and the phosphating agent liquid with the specified concentration is intermittently and vertically sprayed to the surfaces of the spring steel wires; it is ensured that the surface of the spring steel wire is thoroughly eroded by the phosphating agent liquid with enough concentration, and the erosion strength of the phosphating agent liquid can be effectively enhanced in the mode that the phosphating agent liquid vertically impacts the surface of the spring steel wire.

Description

Technical Field

[0001] The invention relates to the technical field of spring steel wire phosphating, in particular to a spring steel wire phosphating device for automobile seats and a processing technology thereof. Background Art

[0002] Phosphating is a process of forming a phosphate chemical conversion film by chemical and electrochemical reactions. The formed phosphate conversion film is called a phosphate film. The purpose of phosphating is mainly to provide protection for the base metal, to prevent the metal from being corroded to a certain extent, and to be used for primer before painting to improve the adhesion and corrosion resistance of the paint film layer. The production and processing of high-elasticity and high-durability spring steel wire (Φ2.65mm) for automobile seats involves a phosphating process, and the phosphating method in the prior art has many shortcomings. For example, the spring steel wire is transported through a box tank storing a phosphating agent liquid, and the phosphating agent liquid contacts and corrodes the surface of the spring steel wire. During the entire phosphating process, the phosphating agent is gradually consumed, so that the strength of the spring steel wire transported subsequently being corroded by the phosphating agent gradually decreases, resulting in uneven phosphating of the spring steel wire as a whole. In addition, the phosphating agent liquid has a poor contact effect with the spring steel wire when immersed, and the phosphating agent has a low erosion strength. If the flowing phosphating agent liquid can vertically impact the surface of the spring steel wire, the erosion strength and efficiency of the phosphating agent can be effectively improved. For this reason, the present invention provides a phosphating device for spring steel wire of automobile seats and a processing technology thereof. Summary of the invention

[0003] The object of the present invention is to provide a phosphating device for spring steel wire of automobile seats and a treatment process thereof to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above object, the present invention provides the following technical solution: a phosphating device for spring steel wire of a car seat, comprising a phosphating tank, one end of which is provided with a reserve tank for storing the phosphating agent to be used, an overflow hole is provided on the shell of the other end of the phosphating tank, a row of wiring devices is provided in the phosphating tank, each wiring device conveys a spring steel wire, and the wiring device comprises: Impact cylinder, spring steel wire passes through the inside of the impact cylinder; There are two direction-changing rollers distributed at both ends of the impact cylinder, and the two direction-changing rollers cooperate with the supporting spring steel wire; A bottom frame used for supporting and positioning two direction-changing rollers, wherein the middle part of the direction-changing roller is movably sleeved in a limiting through hole provided on the bottom frame by setting a shaft body, and the bottom frame is fixed on the phosphating box tank; A brake part, which establishes transmission between the impact cylinder and a direction-changing roller; A feeding tool supplies the phosphating agent to the impact cylinder, the impact cylinder is immersed in the phosphating agent liquid, and one end of the feeding tool extends to the storage tank.

[0005] The impact cylinder comprises: An impact box, which moves around a spring wire between two direction-changing rollers; One side of the impact box is connected to a collecting and distributing pipe, and the other side of the impact box impacts the spring steel wire by intermittently discharging the phosphating agent.

[0006] The impact tube also includes: The two ends of the impact box are connected to a limit ring group, and the spring steel wire passes through the middle of the limit ring group; A reciprocating assembly is mounted on the impact box, and a limit ring assembly establishes transmission between the brake part and the reciprocating assembly.

[0007] The material conveyor includes a fixed ring shell fixed on a base frame, a rotatable ring cylinder that cooperates with the fixed ring shell to form a ring box, and a hard folding tube connected to the ring box. The fixed ring shell is a ring shell body with a concave cross-section, one end of the hard folding tube penetrates a side shell body of the fixed ring shell, and one end of the collecting and distributing pipe penetrates a side shell body of the rotatable ring cylinder and then extends into the inner cavity of the fixed ring shell.

[0008] The limiting ring group includes an inner cylinder arranged on the outside of the spring steel wire, a positioning clamping ring fixed on the outside of the inner cylinder, a plurality of I-shaped rollers arranged on the outside of the positioning clamping ring, and a ring plate frame fixed on the base frame at one end. The I-shaped roller is movably sleeved in a through hole opened on the ring plate frame by setting an axle body, and the inner cylinder supports the end of the impact box.

[0009] The braking part includes an F-type frame fixed on the base frame, and a long worm and a tail shaft supported on the F-type frame. The middle part of the direction-changing roller is meshed and connected with the spiral teeth on the long worm through a fixed shaft gear, one end of the tail shaft is meshed and connected with the bevel gear fixed at the end of the long worm through a fixed bevel gear, and the other end of the tail shaft is meshed and connected with the outer gear ring fixed on the inner cylinder through a fixed gear.

[0010] The reciprocating assembly includes a sub-frame installed on the impact box, a pressure shaft supported on the sub-frame, a head shaft and a short worm, a wheel plate fixed at one end of the head shaft, a pendulum column hinged at one end to the edge of the wheel plate, a direction sliding column hinged at the other end of the pendulum column, and a disk gear fixed at one end of the pressure shaft, the other end of the pressure shaft is meshed and connected to a row of teeth arranged on the direction sliding column through a fixed gear, one end of the short worm is meshed and connected to an outer gear ring fixed on the ring plate frame through a fixed gear, the spiral teeth arranged at the other end of the short worm are meshed and connected to the gear fixed at the other end of the head shaft, and the direction sliding column slides through the square hole opened in the sub-frame.

[0011] The impact box includes a control box in the shape of a rectangular groove shell, a plug flow orifice plate with a piston sliding at the opening of the control box, a door plate used to cover a plurality of through holes on the plug flow orifice plate, a back column fixedly connected to the plurality of door plates, and a plurality of T-disc columns fixed to the plug flow orifice plate, the column body on the T-disc column slides through the column hole opened on the back column, the end of the control box is fixed on the inner tube, a plate frame is provided on the back column, and the plate frame extends to the outside of the control box after passing through the plate hole opened on the control box shell, the back column plate frame is meshed and connected with the disk gear through a fixed rack, and the sub-frame is fixed on the control box.

[0012] The impact box also includes a row of unit tubes that penetrate the bottom plate of the control box, and a door plate corresponding to a cover at one end of each unit tube. The other end of the unit tube is fixedly connected to the collecting and distributing pipe. Two symmetrically distributed concave columns are fixed on the door plate, and one end of the concave column is stuck in a slide groove opened on the outer wall of the unit tube.

[0013] A phosphating process for spring steel wire of a car seat comprises the following steps: Step 1: The phosphating agent liquid stored in the phosphating tank submerges the impact cylinder. When the spring steel wire is conveyed through the inside of the impact cylinder, the surface of the spring steel wire is gradually corroded and phosphated; Step 2: During the phosphating process of the spring steel wire, the impact box moves around the spring steel wire and intermittently sprays the phosphating agent liquid of a specified concentration onto the surface of the spring steel wire; Step 3: The reserve tank supplies the phosphating agent liquid of the specified concentration to the phosphating tank. The phosphating agent liquid of the specified concentration phosphates the surface of the spring steel wire by vertically impacting the surface of the spring steel wire. The low-concentration phosphating agent liquid after phosphating spreads in the phosphating tank, and the low-concentration phosphating agent liquid gradually overflows through the overflow hole for discharge; Step 4: Collect the low-concentration phosphating agent liquid overflowing from the overflow hole, mix the collected low-concentration phosphating agent liquid with the high-concentration phosphating agent liquid to prepare the phosphating agent liquid of the specified concentration, and then replenish the phosphating agent liquid of the specified concentration into the reserve tank.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The spring steel wire is immersed in the phosphating agent liquid for phosphating. The impact box moves around the spring steel wire and intermittently sprays the phosphating agent liquid of a specified concentration vertically onto the surface of the spring steel wire to ensure that the surface of the spring steel wire is thoroughly corroded by the phosphating agent liquid of sufficient concentration. The method of vertically impacting the surface of the spring steel wire with the phosphating agent liquid can effectively enhance the erosion strength of the phosphating agent liquid.

[0015] 2. The present invention realizes multiple drives by connecting the braking part to an external driving mechanism. On the one hand, the rotation of the changing roller is controlled to convey the spring steel wire. On the other hand, the impact box is controlled to move around the spring steel wire through the limit ring group. The surrounding movement of the impact box will further drive the reciprocating component to work, and the reciprocating component supplies energy to the piston mechanism in the impact box. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the present invention.

[0017] Figure 2 Schematic diagram of the impact cylinder position.

[0018] Figure 3 This is a schematic diagram of the position of the feeder.

[0019] Figure 4 Schematic diagram of the position of the limit ring assembly.

[0020] Figure 5 This is a schematic diagram of the collecting and distributing pipe structure.

[0021] Figure 6 It is a schematic diagram of the structure of the feeder.

[0022] Figure 7 It is a schematic diagram of the structure of the limiting ring group.

[0023] Figure 8 It is a schematic diagram of the brake structure.

[0024] Fig. 9 It is a schematic diagram of the reciprocating component structure.

[0025] Fig.10 Schematic diagram of the impact box structure.

[0026] Fig.11 This is a schematic diagram of the control box structure.

[0027] In the figure: phosphating tank 1, storage tank 2, wiring device 3, spring steel wire 4, overflow hole 5, impact cylinder 6, change-of-direction roller 7, chassis 8, brake part 9, feeder 10, impact box 11, collecting and distributing pipe 12, limit ring group 13, reciprocating assembly 14, hard folding tube 15, fixed ring shell 16, movable ring cylinder 17, I-shaped roller 18, ring plate frame 19, beam clamp 20, inner cylinder 21, tail shaft 22, F-type frame 23, long worm 24, pressure shaft 25, disc gear 26, direction sliding column 27, sub-frame 28, pendulum column 29, wheel disc 30, head shaft 31, short worm 32, plug flow orifice plate 33, back column 34, T-disc column 35, door panel 36, control box 37, unit pipe 38, door panel 39. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the technical solutions in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] See also Figures 1 to 11 The present invention provides a technical solution: a spring steel wire phosphating device for a car seat, comprising a phosphating tank 1, a reserve tank 2 for storing a phosphating agent to be used is arranged at one end of the phosphating tank 1, an overflow hole 5 is opened on the shell of the other end of the phosphating tank 1, a row of wiring devices 3 are arranged in the phosphating tank 1, and each wiring device 3 conveys a spring steel wire 4, and the wiring device 3 comprises: The impact tube 6, the spring steel wire 4 passes through the impact tube 6; The two direction-changing rollers 7 are distributed at both ends of the impact cylinder 6, and the two direction-changing rollers 7 cooperate with the supporting spring steel wire 4; A base frame 8 is used to support and position two direction-changing rollers 7. The middle part of the direction-changing roller 7 is movably sleeved in a limiting through hole provided on the base frame 8 by setting an axle body. The base frame 8 is fixed on the phosphating tank 1. A brake part 9, the brake part 9 establishes a transmission between the impact cylinder 6 and a change-of-direction roller 7; A feeding device 10 supplies the phosphating agent to the impact cylinder 6 . The impact cylinder 6 is entirely immersed in the phosphating agent liquid. One end of the feeding device 10 extends into the storage tank 2 .

[0030] refer to Figure 5 It is understood that the impact tube 6 includes: An impact box 11, the impact box 11 moves around the spring wire 4 between the two change-of-direction rollers 7; One side of the impact box 11 is connected to a collecting and distributing pipe 12, and the other side of the impact box 11 impacts the spring steel wire 4 by intermittently discharging the phosphating agent.

[0031] refer to Figure 5 It is understood that the impact tube 6 also includes: The two ends of the impact box 11 are connected to a limit ring group 13, and the spring steel wire 4 passes through the middle of the limit ring group 13; A reciprocating assembly 14 is mounted on the impact box 11 , and a limiting ring assembly 13 establishes transmission between the braking part 9 and the reciprocating assembly 14 .

[0032] refer to Figure 6It is understood that the material conveying device 10 includes a fixed ring shell 16 fixed on the base frame 8, a swivel ring cylinder 17 that cooperates with the fixed ring shell 16 to form a ring box, and a hard fold tube 15 connected to the ring box. The fixed ring shell 16 is a ring shell with a concave cross-section. One end of the hard fold tube 15 penetrates a side shell of the fixed ring shell 16, and one end of the collecting and distributing pipe 12 penetrates a side shell of the swivel ring cylinder 17 and then extends into the inner cavity of the fixed ring shell 16. A retaining ring is set on the bottom surface of the swivel ring cylinder 17 to clamp into the ring groove opened on the fixed ring shell 16.

[0033] One end of the hard fold tube 15 is inserted into the phosphating agent liquid in the storage tank 2, and the phosphating agent in the collecting and distributing pipe 12 is sucked into the impact box 11. Under the action of suction, the phosphating agent in the storage tank 2 is sucked into the ring box through the hard fold tube 15, and then sucked into the collecting and distributing pipe 12.

[0034] refer to Figure 7 It is understood that the limiting ring group 13 includes an inner cylinder 21 arranged on the outside of the spring steel wire 4, a positioning clamp 20 fixed on the outside of the inner cylinder 21, a plurality of I-shaped rollers 18 arranged on the outside of the positioning clamp 20, and a ring plate frame 19 fixed at one end on the base frame 8. The I-shaped roller 18 is movably connected in a through hole opened on the ring plate frame 19 by setting an axle, and the inner cylinder 21 supports the end of the impact box 11.

[0035] refer to Figure 8 It is understood that the braking part 9 includes an F-type frame 23 fixed on the base frame 8, and a long worm 24 and a tail shaft 22 supported on the F-type frame 23. The middle part of the direction-changing roller 7 is meshed and connected with the helical teeth on the long worm 24 through a fixed shaft gear, one end of the tail shaft 22 is meshed and connected with the bevel gear fixed at the end of the long worm 24 through a fixed bevel gear, and the other end of the tail shaft 22 is meshed and connected with the outer gear ring fixed on the inner tube 21 through a fixed gear. The long worm 24 and the tail shaft 22 are respectively movably sleeved in different through holes opened on the F-type frame 23.

[0036] The reciprocating assembly 14 includes a sub-frame 28 mounted on the impact box 11, a pressure shaft 25 supported on the sub-frame 28, a head shaft 31 and a short worm 32, a wheel disc 30 fixed at one end of the head shaft 31, a pendulum column 29 hinged at one end to the edge of the wheel disc 30, a direction sliding column 27 hinged at the other end of the pendulum column 29, and a disc gear 26 fixed at one end of the pressure shaft 25, the other end of the pressure shaft 25 is meshed and connected to a row of teeth arranged on the direction sliding column 27 through a fixed gear, one end of the short worm 32 is meshed and connected to an outer gear ring fixed on the ring plate frame 19 through a fixed gear, the spiral teeth arranged at the other end of the short worm 32 are meshed and connected to the gear fixed at the other end of the head shaft 31, the direction sliding column 27 slides through the square hole opened in the sub-frame 28, and the pressure shaft 25, the head shaft 31 and the short worm 32 are respectively movably sleeved in different through holes opened in the sub-frame 28.

[0037] The impact box 11 includes a control box 37 in the shape of a rectangular groove shell, a plug flow orifice plate 33 with a piston sliding at the opening of the control box 37, a door plate 36 for covering a plurality of through holes provided on the plug flow orifice plate 33, a back column 34 fixedly connected to the plurality of door plates 36, and a plurality of T-disc columns 35 fixed on the plug flow orifice plate 33, the column bodies on the T-disc columns 35 slide through the column holes provided on the back columns 34, the end of the control box 37 is fixed on the inner tube 21, a plate frame is provided on the back column 34, and the plate frame extends to the outside of the control box 37 after passing through the plate holes provided on the shell of the control box 37, the plate frame on the back column 34 is meshed and transmission-connected with the disc gear 26 through a fixed rack, and the sub-frame 28 is fixed on the control box 37.

[0038] The impact box 11 also includes a row of unit tubes 38 that pass through the bottom plate of the control box 37, and a door plate 39 corresponding to the cover at one end of each unit tube 38. The other end of the unit tube 38 is fixedly connected to the collecting and distributing pipe 12. Two symmetrically distributed concave columns are fixed on the door plate 39, and one end of the concave column is inserted into a slide groove opened on the outer wall of the unit tube 38.

[0039] A phosphating process for spring steel wire of a car seat comprises the following steps: Step 1: The phosphating agent liquid stored in the phosphating tank 1 floods the impact cylinder 6, and when the spring steel wire 4 is transported through the inside of the impact cylinder 6, the surface of the spring steel wire 4 is gradually corroded and phosphated; Step 2: During the phosphating process of the spring steel wire 4, the impact box 11 moves around the spring steel wire 4 and intermittently sprays a phosphating agent liquid of a specified concentration onto the surface of the spring steel wire 4; Step 3: The reserve tank 2 supplies a phosphating agent liquid of a specified concentration to the phosphating tank 1. The phosphating agent liquid of the specified concentration phosphates the surface of the spring steel wire 4 by vertically impacting the surface of the spring steel wire 4. The low-concentration phosphating agent liquid after phosphating diffuses in the phosphating tank 1, and the low-concentration phosphating agent liquid gradually overflows and is discharged through the overflow hole 5; Step 4: Collect the low-concentration phosphating agent liquid overflowing from the overflow hole 5, mix the collected low-concentration phosphating agent liquid with the high-concentration phosphating agent liquid to prepare the phosphating agent liquid of the specified concentration, and then replenish the phosphating agent liquid of the specified concentration into the storage tank 2.

[0040] The long worm 24 is externally connected to a driving mechanism in the prior art. The long worm 24 rotates continuously to drive the tail shaft 22, and then the inner cylinder 21 rotates to drive the impact box 11 to move around the spring wire 4. The impact box 11 drives the reciprocating assembly 14, and the short worm 32 in the reciprocating assembly 14 rotates in a mixed manner. The short worm 32 is meshed and connected with the outer gear ring on the stationary ring plate frame 19. In this way, the short worm 32 rotates continuously, and the short worm 32 drives the head position shaft 31, and then the wheel 30 rotates to drive the pendulum column 29, causing the direction sliding column 27 to reciprocate. Then the pressure shaft 25 drives the disc gear 26 to rotate reciprocatingly, driving the control back column 34 to reciprocate, so that the plug flow orifice plate 33 slides continuously in the control box 37. Fig.10 , the back column 34 pushes the plug flow orifice plate 33, the door plate 36 moves to block the through hole on the plug flow orifice plate 33, and then the plug flow orifice plate 33 moves synchronously with the back column 34, the plug flow orifice plate 33 pushes out the newly added phosphating agent liquid in the control box 37, and at the same time the phosphating agent liquid in the collecting and distributing pipe 12 is sucked into the control box 37, and the phosphating agent liquid in the unit tube 38 is replenished in the control box 37 after opening the door plate 39, when the back column 34 moves in the opposite direction, the back column 34 gradually approaches the bottom plate of the control box 37, and the back column 34 drives the door plate 36 to move synchronously, and the door plate 36 and the through hole on the plug flow orifice plate 33 are separated, and then the back column 34 drives the plug flow orifice plate 33 to move by driving the T plate column 35, because the door plate 36 no longer blocks the plug flow orifice plate 33, so that when the plug flow orifice plate 33 approaches the bottom plate of the control box 37, the phosphating agent liquid in the inner cavity of the control box 37 is discharged to Fig.10 The plug flow orifice 33 is on the left side, and the plug flow orifice 33 is close to the bottom plate of the control box 37. The internal pressure in the control box 37 acts on the door plate 39, and the door plate 39 covers the unit tube 38, so as to prevent the phosphating agent liquid from flowing back. In summary, the plug flow orifice 33 continuously moves as a piston, and the phosphating agent liquid in the collecting and distributing pipe 12 is intermittently replenished into the control box 37. Then, under the push of the plug flow orifice 33, the phosphating agent liquid intermittently flows to impact the spring steel wire 4.

[0041] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A phosphating equipment for spring steel wire of automobile seats, including a phosphating tank, characterized in that: A reserve tank for storing the phosphating agent to be used is provided at one end of the phosphating tank, an overflow hole is provided on the shell of the other end of the phosphating tank, a row of wiring devices is provided in the phosphating tank, each wiring device conveys a spring steel wire, and the wiring device includes: Impact cylinder, spring steel wire passes through the inside of the impact cylinder; There are two direction-changing rollers distributed at both ends of the impact cylinder, and the two direction-changing rollers cooperate with the supporting spring steel wire; A bottom frame used for supporting and positioning two direction-changing rollers, wherein the middle part of the direction-changing roller is movably sleeved in a limiting through hole provided on the bottom frame by setting a shaft body, and the bottom frame is fixed on the phosphating box tank; A brake part, which establishes transmission between the impact cylinder and a direction-changing roller; A feeding tool for supplying the phosphating agent to the impact cylinder, the impact cylinder as a whole is immersed in the phosphating agent liquid, and one end of the feeding tool extends to the storage tank; The impact cylinder comprises: An impact box, which moves around a spring wire between two direction-changing rollers; The collecting and distributing pipe is connected to one side of the impact box, and the phosphating agent is discharged intermittently on the other side of the impact box to impact the spring steel wire; The impact tube also includes: The two ends of the impact box are connected to a limit ring group, and the spring steel wire passes through the middle of the limit ring group; A reciprocating assembly is mounted on the impact box, and a limit ring assembly establishes transmission between the brake part and the reciprocating assembly.

2. The spring steel wire phosphating equipment for automobile seats according to claim 1, characterized in that: The material conveyor includes a fixed ring shell fixed on a base frame, a rotatable ring cylinder that cooperates with the fixed ring shell to form a ring box, and a hard folding tube connected to the ring box. The fixed ring shell is a ring shell body with a concave cross-section, one end of the hard folding tube penetrates a side shell body of the fixed ring shell, and one end of the collecting and distributing pipe penetrates a side shell body of the rotatable ring cylinder and then extends into the inner cavity of the fixed ring shell.

3. The spring steel wire phosphating equipment for automobile seats according to claim 1, characterized in that: The limiting ring group includes an inner cylinder arranged on the outside of the spring steel wire, a positioning clamping ring fixed on the outside of the inner cylinder, a plurality of I-shaped rollers arranged on the outside of the positioning clamping ring, and a ring plate frame fixed on the base frame at one end. The I-shaped roller is movably sleeved in a through hole opened on the ring plate frame by setting an axle body, and the inner cylinder supports the end of the impact box.

4. The spring steel wire phosphating equipment for automobile seats according to claim 3, characterized in that: The braking part includes an F-type frame fixed on the base frame, and a long worm and a tail shaft supported on the F-type frame. The middle part of the direction-changing roller is meshed and connected with the spiral teeth on the long worm through a fixed shaft gear, one end of the tail shaft is meshed and connected with the bevel gear fixed at the end of the long worm through a fixed bevel gear, and the other end of the tail shaft is meshed and connected with the outer gear ring fixed on the inner cylinder through a fixed gear.

5. The spring steel wire phosphating equipment for automobile seats according to claim 3, characterized in that: The reciprocating assembly includes a sub-frame installed on the impact box, a pressure shaft supported on the sub-frame, a head shaft and a short worm, a wheel plate fixed at one end of the head shaft, a pendulum column hinged at one end to the edge of the wheel plate, a direction sliding column hinged at the other end of the pendulum column, and a disk gear fixed at one end of the pressure shaft, the other end of the pressure shaft is meshed and connected to a row of teeth arranged on the direction sliding column through a fixed gear, one end of the short worm is meshed and connected to an outer gear ring fixed on the ring plate frame through a fixed gear, the spiral teeth arranged at the other end of the short worm are meshed and connected to the gear fixed at the other end of the head shaft, and the direction sliding column slides through the square hole opened in the sub-frame.

6. The spring steel wire phosphating equipment for automobile seats according to claim 5, characterized in that: The impact box includes a control box in the shape of a rectangular groove shell, a plug flow orifice plate with a piston sliding at the opening of the control box, a door plate used to cover a plurality of through holes on the plug flow orifice plate, a back column fixedly connected to the plurality of door plates, and a plurality of T-disc columns fixed to the plug flow orifice plate, the column body on the T-disc column slides through the column hole opened on the back column, the end of the control box is fixed on the inner tube, a plate frame is provided on the back column, and the plate frame extends to the outside of the control box after passing through the plate hole opened on the control box shell, the back column plate frame is meshed and connected with the disk gear through a fixed rack, and the sub-frame is fixed on the control box.

7. The spring steel wire phosphating equipment for automobile seats according to claim 6, characterized in that: The impact box also includes a row of unit tubes that penetrate the bottom plate of the control box, and a door plate corresponding to a cover at one end of each unit tube. The other end of the unit tube is fixedly connected to the collecting and distributing pipe. Two symmetrically distributed concave columns are fixed on the door plate, and one end of the concave column is stuck in a slide groove opened on the outer wall of the unit tube.

8. A phosphating process for spring steel wire of a car seat, using the phosphating equipment for spring steel wire of a car seat according to claim 1, characterized in that: The following steps are involved: Step 1: The phosphating agent liquid stored in the phosphating tank submerges the impact cylinder. When the spring steel wire is conveyed through the inside of the impact cylinder, the surface of the spring steel wire is gradually corroded and phosphated; Step 2: During the phosphating process of the spring steel wire, the impact box moves around the spring steel wire and intermittently sprays the phosphating agent liquid of a specified concentration onto the surface of the spring steel wire; Step 3: The reserve tank supplies the phosphating agent liquid of the specified concentration to the phosphating tank. The phosphating agent liquid of the specified concentration phosphates the surface of the spring steel wire by vertically impacting the surface of the spring steel wire. The low-concentration phosphating agent liquid after phosphating spreads in the phosphating tank, and the low-concentration phosphating agent liquid gradually overflows through the overflow hole for discharge; Step 4: Collect the low-concentration phosphating agent liquid overflowing from the overflow hole, mix the collected low-concentration phosphating agent liquid with the high-concentration phosphating agent liquid to prepare the phosphating agent liquid of the specified concentration, and then replenish the phosphating agent liquid of the specified concentration into the reserve tank.

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