Steel plate spring surface treatment device

Abstract

The present application relates to steel structure processing device technical field, specifically to a kind of steel plate spring surface treatment device, comprising: guide rail, it is located in the upper side of processing area, for providing the moving path when steel plate spring processing;Suspension mechanism, its quantity is several, and slidingly disposed on guide rail, for suspending steel plate spring to make it suspended;Adjusting mechanism, its quantity is two, and symmetrically distributed before and after along the sliding direction of track in spraying area, for forming offset drive to suspension mechanism, so that steel plate spring produces spatial movement.By the cooperation of guide rail and suspension mechanism, when steel plate spring is processed, steel plate spring can be moved along guide rail, reach the continuous transfer of processing area, improve the protection effect when steel plate spring is processed, adjusting mechanism can be applied to steel plate spring corresponding deflection adjustment, so that steel plate spring swing relative to hanger frame, to change its relative position, improve spraying uniformity.

Description

Technical Field

[0001] This invention relates to the field of steel structure processing equipment technology, and specifically to a surface treatment device for steel leaf springs. Background Technology

[0002] Leaf springs are a type of shock-absorbing structure in vehicle suspension systems, mainly used in off-road vehicles or trucks. In order to improve the salt corrosion resistance and strength of leaf springs and prevent their performance from being reduced due to rust, surface treatment is performed on them during the production process, including surface treatment of individual springs and overall secondary spraying after assembly.

[0003] The secondary spraying treatment after assembly is mainly aimed at increasing the overall coating thickness of the leaf spring, supplementing the anti-rust coating on the surface of small metal parts after assembly, and most importantly, sealing the side gaps after multiple springs are stacked to prevent rainwater and impurities from entering the gaps.

[0004] Currently, most secondary coating processes use suspended manual or automatic spray guns. However, since conventional suspended structures can only maintain a relative position, some areas are easily obstructed during the coating process, requiring manual recoating, which affects the overall processing effect and efficiency. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention proposes a surface treatment device for leaf springs, which solves the technical problems of poor spraying effect and low efficiency requiring manual secondary spraying in existing technologies.

[0006] The technical solution adopted in this invention is a surface treatment device for steel leaf springs, comprising: The guide rail, located on the upper side of the processing area, is used to provide the movement path during the processing of leaf springs; The suspension mechanism consists of several components that slide on the guide rail to suspend the leaf springs and keep them suspended in the air. There are two adjustment mechanisms, which are symmetrically distributed back and forth along the sliding direction of the track in the spraying area. They are used to create an offset drive for the suspension mechanism, so that the leaf spring can move in space.

[0007] This structure, through the cooperation of guide rails and suspension mechanisms, makes it easier to process leaf springs continuously during spray painting, reducing the number of times the suspension needs to be disassembled and reassembled, avoiding bumps and knocks. At the same time, the adjustment mechanism can adjust the relative position of the leaf springs during suspension, causing them to swing accordingly, thereby increasing the spray coverage area and avoiding obstruction of the leaf springs by the suspension mechanism, thus reducing the tediousness of secondary spraying.

[0008] The suspension mechanism includes: a carrier plate slidably mounted on a track, a hanging frame located on the underside of the carrier plate, and a connecting assembly located between the hanging frame and the leaf spring's coil lug. The connecting assembly is used to connect the leaf spring and the hanging frame, and the connecting assembly and the leaf spring are movably connected.

[0009] The connecting assembly includes: an inner sleeve that matches the inner diameter of the leaf spring lug; a connecting sleeve that slides through the side of the frame and is slidably connected to the inner sleeve; and a locking lug located on the outer side of the connecting sleeve. The locking lug is fixedly connected to the frame by a locking element. The inner sleeve is rotatable relative to the leaf spring and the connecting sleeve.

[0010] This structure, through the connection between the carrier plate and the track, and in conjunction with the connection between the suspension frame and the connecting components and the leaf spring, can ensure the relative position stability without affecting the suspension, which is conducive to the needs of stable processing.

[0011] The adjustment mechanism includes: a telescopic device connected to an external fixed surface via a bracket, and a push rod rotatably connected to the telescopic shaft of the telescopic device. The telescopic device can drive the push rod to push the hanging frame through the extension and retraction of the telescopic shaft, causing the hanging frame to swing in the same direction as the guide rail.

[0012] This structure, through the traction and pulling of the push rod by the telescopic device, can generate a corresponding pushing action on the hanging frame, thereby causing the entire leaf spring to sway and adjust its relative position for spraying. It can also adjust the position of the leaf spring relative to the spraying point, thus improving the uniformity of the spraying process.

[0013] The push rod is equipped with a swing arm for pushing the frame to move laterally.

[0014] The push rod has a movable cavity along its axis, and the movable cavity is connected to the telescopic shaft at a rotating end with an oil passage that communicates with the outside. The side of the push rod has a movable window that communicates with the movable cavity and corresponds to the position when the frame is perpendicular to the ground. The swaying assembly includes: a plug that is slidably sealed in the movable cavity; an extension rod that is concentrically connected to the side of the plug away from the oil passage; and a push clamp that is mounted on the extension rod and extends out of the movable window to engage with the frame. The plug and the movable cavity near the oil passage form a closed oil cavity through spatial cooperation, which allows the plug to slide in the movable cavity by injecting or extracting hydraulic oil. The push clamp can move with the extension rod to create a swinging traction on the frame.

[0015] This structure, through the sway component, creates a lateral push on the hanging frame, thereby causing the leaf spring to tilt laterally. This allows the paint in the gap area on the side of the leaf spring to penetrate more effectively, improving the coating coverage in that area.

[0016] The hanging frame and the carrier plate are movably connected by a ball joint assembly, allowing the hanging frame to swing along the length of the guide rail or laterally.

[0017] The ball head assembly includes: a ball head fixedly disposed at the middle of the upper end of the hanging frame, and a ball cover fixedly disposed at the middle of the lower side of the carrier plate. The ball head and the ball cover are connected to each other, and the opening diameter of the ball cover is smaller than the maximum diameter of the ball head.

[0018] This structure, through the cooperation of the ball head and the ball cover, enables the hanging frame to maintain corresponding flipping movement when subjected to the adjustment mechanism or the swing component. Its structure is simple and stable, and meets the needs of multi-directional flipping.

[0019] As can be seen from the above technical solution, the beneficial technical effects of the present invention are as follows: 1. Through the cooperation of the guide rail and the suspension mechanism, the leaf spring can move along the guide rail during processing, achieving continuous transfer of the processing area, reducing the tediousness and frequency of manual disassembly, and improving the protection effect of the leaf spring during processing. The adjustment mechanism can apply corresponding yaw adjustment to the leaf spring, so that the leaf spring swings relative to the hanging frame to change its relative position, and avoids the hanging frame continuously blocking part of the leaf spring during the spraying process, thus improving the uniformity of spraying.

[0020] 2. By setting up the skew component, the leaf spring can be further skewed laterally during processing, which promotes the penetration of the coating on the side of the leaf spring into the gap, thereby further improving the processing effect. Attached Figure Description

[0021] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0022] Figure 1 This is a schematic diagram of the overall structure of a surface treatment device for steel leaf springs according to a first embodiment of the present invention; Figure 2 This is a schematic diagram of the suspension mechanism in Embodiment 1 of the steel leaf spring surface treatment device of the present invention; Figure 3 This is a schematic diagram of the overall structure of a second embodiment of the steel leaf spring surface treatment device of the present invention; Figure 4 This is a schematic diagram of the structure of a steel leaf spring surface treatment device according to Embodiment 2 after deflection; Figure 5 This is a cross-sectional view of the oscillation component in Embodiment 2 of the steel leaf spring surface treatment device of the present invention.

[0023] Figure label: Guide rail 1; Suspension mechanism 2, carrier plate 21, hanging frame 22, connecting assembly 23, inner sleeve 231, connecting tube 232, lock lug 233; Adjustment mechanism 3, telescopic device 31, push rod 32, movable cavity 321, oil circuit 322, movable window 323; 4. Oscillating assembly; 41. Plug; 42. Extension rod; 43. Push clamp; Ball head assembly 5, ball head 51, ball cover 52. Detailed Implementation

[0024] The embodiments of the technical solution of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the technical solution of the present invention and are therefore intended to limit the scope of protection of the present invention.

[0025] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application should have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains.

[0026] Example 1: like Figure 1-2 As shown, this embodiment provides a surface treatment device for steel leaf springs, including: Guide rail 1, located on the upper side of the processing area, is used to provide the movement path during the processing of leaf springs; The suspension mechanism 2, which consists of several parts, is slidably mounted on the guide rail 1 and is used to suspend the steel leaf spring so that it is suspended in the air; There are two adjustment mechanisms 3, which are symmetrically distributed back and forth along the sliding direction of the track in the spraying area. They are used to offset the suspension mechanism 2, so that the leaf spring can move in space.

[0027] The laying path of guide rail 1 can be arranged according to the needs of the spraying process, so that it starts from the loading area and passes through the spraying area, drying area and unloading area in sequence, thereby ensuring that the steel leaf spring is always suspended in the processing process, avoiding bumps or affecting the integrity of the spray paint coverage.

[0028] In addition, the guide rail 1 can be set as a circular track, so that the suspension mechanism 2 can form a cyclic movement according to the processing procedure without disassembly and reversal. The number of suspension mechanisms 2 is several to meet the needs of independent processing environments of multiple leaf springs in different processing areas.

[0029] The working principle of Example 1 is explained in detail below: Before the leaf spring is coated, the distance between the two suspension mechanisms 2 is adjusted according to the initial length of the leaf spring until it can hook with the lugs on both sides of the leaf spring through the suspension mechanism 2. In this way, by pulling the leaf spring or the suspension mechanism 2, the leaf spring can be moved along the track, thereby improving the convenience of the coating process and reducing the complexity of manual disassembly or movement.

[0030] Next, during the spraying process of the leaf spring, in order to make the surface spraying of the leaf spring more uniform, the suspension mechanism 2 can be adjusted by the adjustment mechanism 3 during the processing in the spraying area. This allows the suspension mechanism 2 to drive the leaf spring to swing, thereby causing the side of the leaf spring that was covered by the suspension mechanism 2 to shift and be exposed. In this way, the spraying equipment set in the spraying area can directly spray this area, avoiding the need for subsequent manual re-spraying, which would prolong the processing time and reduce the consumption of manpower. In addition, by swinging the leaf spring as a whole, the leaf spring can also move relative to the position of the spraying point. This not only expands the spraying range by changing the position of the spraying device itself, but also improves the uniformity of the spraying by moving the leaf spring itself, which is more conducive to the needs of high-quality and efficient processing.

[0031] The suspension mechanism 2 includes: a carrier plate 21 slidably disposed on the track, a hanging frame 22 disposed on the lower side of the carrier plate 21, and a connecting assembly 23 disposed between the hanging frame 22 and the lug of the leaf spring. The connecting assembly 23 is used to connect the leaf spring and the hanging frame 22, and the connecting assembly 23 and the leaf spring are movably connected.

[0032] In this first embodiment, the carrier plate 21 is connected to the guide rail 1, and the carrier plate 21 can slide on the rail, serving as a mounting component and a sliding component. The hanging frame 22, in conjunction with the connecting component 23, enables the carrier plate 21 to form a suspension connection with the steel leaf spring through the hanging frame 22, which is convenient for processing needs.

[0033] Of course, in order to ensure the stability of the processing environment, after the suspension plate spring moves to the appropriate position, the carrier plate 21 can be limited by structures such as pins or limit plates to prevent it from sliding due to external influences.

[0034] The connecting assembly 23 includes: an inner sleeve 231 that matches the inner diameter of the leaf spring lug; a connecting sleeve 232 that slides through the side of the lifting frame 22 and is slidably connected to the inner sleeve 231; and a locking lug 233 located on the outer side of the connecting sleeve 232. The locking lug 233 is fixedly connected to the lifting frame 22 by a locking member. The inner sleeve 231 is rotatable relative to the leaf spring and the connecting sleeve 232.

[0035] In this first embodiment, when suspending the leaf spring, the inner sleeve 231 is first inserted into the leaf spring's lug. Then, using an external lifting platform or other height adjustment structure, the lug of the leaf spring is aligned with the position of the hanging frame 22 until the connecting sleeve 232 can be inserted into the hanging frame 22 and the lug. Finally, the hanging frame 22 and the connecting sleeve 232 are fixed with bolts and locking lugs 233. This maintains relative suspension stability and avoids excessive friction between the leaf spring and the connecting sleeve 232 when the hanging frame 22 is flipped. It also keeps the leaf spring in a relatively horizontal state to prevent tilting of the leaf spring from affecting processing.

[0036] In other embodiments, the connection between the locking lug 233 and the connecting cylinder 232 can also be achieved by a fixing method such as a pin.

[0037] The adjustment mechanism 3 includes: a telescopic device 31 connected to an external fixed surface via a bracket, and a push rod 32 coaxially rotatably connected to the telescopic shaft of the telescopic device 31. The telescopic device 31 can drive the push rod 32 to push the hanging frame 22 through the extension and retraction of the telescopic shaft, causing the hanging frame 22 to swing in the same length direction as the guide rail 1.

[0038] In this first embodiment, the telescopic device 31 is a hydraulic cylinder. Of course, in other embodiments, a pneumatic cylinder or an electrically controlled telescopic rod can also be used. When it is necessary to swing the hanging frame 22, the telescopic devices 31 in the two adjustment mechanisms 3 are adjusted synchronously so that the telescopic shafts of the two adjustment mechanisms 3 move in opposite directions, that is, one extends and the other retracts. The push rod 32 applies a pushing force to the hanging frame 22 on the corresponding side, thereby causing the hanging frame 22 on the pushed side to generate a swaying force, which in turn causes the entire leaf spring to move upward, so as to achieve the effect of changing the horizontal position of the hanging frame 22 relative to the leaf spring and improving the uniformity of spraying.

[0039] Finally, after the leaf spring is processed, the telescopic shafts of the two telescopic devices 31 are fully extended to prevent the push rod 32 from obstructing the leaf spring or the hanging frame 22. Then, the push rod 32 is rotated away from the moving path of the hanging frame 22 to avoid obstruction. In this way, the leaf spring can be moved out of the spraying area as a whole to prepare for subsequent drying. In order to ensure the relative position of the push rod 32 is stable after rotation, the push rod 32 and the telescopic shaft of the telescopic device 31 can be circumferentially limited by means of bolts or pins.

[0040] Example 2: like Figure 3-5 As shown, the only difference in technical features compared to Embodiment 1 is that the push rod 32 is provided with a swing component 4 for pushing the hanging frame 22 to move laterally.

[0041] The push rod 32 has a movable cavity 321 along its axis, and the movable cavity 321 is connected to the telescopic shaft at a rotating end with an oil passage 322 that communicates with the outside. The push rod 32 has a movable window 323 on its side that communicates with the movable cavity 321 and corresponds to the position when the frame 22 is perpendicular to the ground. The sway assembly 4 includes: a plug 41 that is slidably sealed in the movable cavity 321; an extension rod 42 that is concentrically connected to the side of the plug 41 away from the oil passage 322; and a push clamp 43 that is provided on the extension rod 42 and extends out of the movable window 323 to engage with the frame 22. The plug 41 and the movable cavity 321 near the oil passage 322 form a closed oil cavity, which can slide the plug 41 in the movable cavity 321 by injecting or extracting hydraulic oil. The push clamp 43 can move with the extension rod 42 to swing and pull the frame 22.

[0042] The hanging frame 22 and the carrier plate 21 are movably connected by the ball joint assembly 5, so that the hanging frame 22 can swing along the length of the guide rail 1 or laterally.

[0043] Apart from that, all other structures are identical.

[0044] In this second embodiment, in order to enable the coating sprayed onto the surface of the leaf spring to penetrate more effectively into the gap between adjacent steel plates and improve the filling performance of the gap during the secondary spraying process, in addition to using the weight of the coating to make the coating flow autonomously along the curvature of the leaf spring, the oscillating component 4 can further enable the coating on the side of the leaf spring to flow more effectively into the gap.

[0045] Specifically, during the paint spraying process, an externally installed oil pump injects or extracts hydraulic oil into or from the closed oil chamber through the oil circuit 322, thereby creating positive or negative pressure within the closed oil chamber. This causes the plug 41 to move accordingly within the movable chamber 321, which in turn drives the extension rod 42 to move laterally within the movable chamber 321. Combined with the pushing action of the push clamp 43 on the hanging frame 22 and the movable connection state of the ball head assembly 5, the lateral swing effect of the hanging frame 22 can be achieved. This allows the paint sprayed onto the side of the leaf spring to flow more effectively into the gaps in the steel plate, improving the uniformity of paint coverage in this area and reducing the possibility of later corrosion in this area. Furthermore, the micro-swing processing method can further coordinate with the paint spraying position of the spraying equipment to improve the overall uniformity of the spraying on the leaf spring.

[0046] The ball head assembly 5 includes: a ball head 51 fixedly disposed at the middle of the upper end of the hanging frame 22, and a ball cover 52 fixedly disposed at the middle of the lower side of the carrier plate 21. The ball head 51 and the ball cover 52 are connected to each other, and the opening diameter of the ball cover 52 is smaller than the maximum diameter of the ball head 51.

[0047] In this second embodiment, the ball head 51 is connected to the hanging frame 22 and is movably embedded in the ball cover 52. When the hanging frame 22 is pushed laterally, the ball head 51 can maintain the connection with the carrier plate 21 and form a lateral swing. In addition, the connection method between the ball head 51 and the ball cover 52 can also meet the swing adjustment needs of the adjustment mechanism 3 on the hanging frame 22. This simplifies the connection structure and meets the needs of multi-directional swing spraying processing.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention.

Claims

1. A surface treatment device for steel leaf springs, characterized in that, include: The guide rail (1) is located on the upper side of the processing area and is used to provide the moving path during the processing of the leaf spring; The suspension mechanism (2) consists of several parts and is slidably mounted on the guide rail (1) to suspend the steel leaf spring so that it is suspended in the air; The adjustment mechanism (3) consists of two parts, which are symmetrically distributed in the spraying area along the sliding direction of the track. They are used to offset the suspension mechanism (2) and make the leaf spring move in space.

2. The steel leaf spring surface treatment device according to claim 1, characterized in that, The suspension mechanism (2) includes: a carrier plate (21) slidably disposed on the track, a hanging frame (22) disposed on the lower side of the carrier plate (21), and a connecting assembly (23) disposed between the hanging frame (22) and the lug of the leaf spring. The connecting assembly (23) is used to connect the leaf spring and the hanging frame (22), and the connecting assembly (23) and the leaf spring are movably connected.

3. The steel leaf spring surface treatment device according to claim 2, characterized in that, The connecting assembly (23) includes: an inner sleeve (231) that matches the inner diameter of the leaf spring lug; a connecting sleeve (232) that slides through the side of the hanging frame (22) and is slidably connected to the inner sleeve (231); and a locking lug (233) located on the outer side of the connecting sleeve (232). The locking lug (233) is fixedly connected to the hanging frame (22) by a locking member. The inner sleeve (231) is rotatable relative to the leaf spring and the connecting sleeve (232).

4. The steel leaf spring surface treatment device according to claim 2, characterized in that, The adjustment mechanism (3) includes: a telescopic device (31) connected to an external fixed surface via a bracket, and a push rod (32) coaxially connected to the telescopic shaft of the telescopic device (31). The telescopic device (31) can drive the push rod (32) to push the hanging frame (22) through the extension and retraction of the telescopic shaft, so that the hanging frame (22) swings in the same direction as the length of the guide rail (1).

5. The steel leaf spring surface treatment device according to claim 4, characterized in that, The push rod (32) is provided with a yaw component (4) for pushing the hanging frame (22) to move laterally.

6. The steel leaf spring surface treatment device according to claim 5, characterized in that, The push rod (32) has a movable cavity (321) along its axis, and the movable cavity (321) is provided with an oil passage (322) communicating with the outside at the rotatable connection end with the telescopic shaft. The push rod (32) has a movable window (323) on its side that communicates with the movable cavity (321) and corresponds to the position when the hanging frame (22) is perpendicular to the ground. The sway assembly (4) includes: a plug (41) that is slidably sealed in the movable cavity (321), and a part of the plug (41) that is away from the oil passage (322). The extension rod (42) is concentrically connected on the side. The push clamp (43) is provided on the extension rod (42) and extends out of the movable window (323) to engage with the hanging frame (22). The plug (41) and the movable cavity (321) are spatially matched on the side near the oil circuit (322) to form a closed oil cavity. The plug (41) can slide in the movable cavity (321) by injecting or extracting hydraulic oil. The push clamp (43) can swing and pull the hanging frame (22) as the extension rod (42) moves.

7. The steel leaf spring surface treatment device according to claim 6, characterized in that, The hanging frame (22) and the carrier plate (21) are movably connected by a ball joint (5), so that the hanging frame (22) can swing along the length direction or laterally of the guide rail (1).

8. The steel leaf spring surface treatment device according to claim 7, characterized in that, The ball head assembly (5) includes: a ball head (51) fixedly disposed at the middle of the upper end of the hanging frame (22), and a ball cover (52) fixedly disposed at the middle of the lower side of the carrier plate (21). The ball head (51) and the ball cover (52) are connected to each other, and the opening diameter of the ball cover (52) is smaller than the maximum diameter of the ball head (51).

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