A rust-proof chain conveyor for car body processing

Abstract

The present invention relates to the field of conveyor technology, specifically to a rust-proof chain conveyor for car body processing, comprising a drive seat, a car body basket, a transmission assembly and a dynamic sealing assembly. The car body basket is slidably connected to a sliding guide groove on the drive seat through a sliding pin and a guide pin rod. The traction ear is connected to the segment of the circulating chain. The segment and the linking pin are molded using a multi-directional woven carbon fiber reinforced polymer composite material. Pin holes and sealing lips are provided at both ends of the segment, and a rubber ring is provided in the pin hole. The outer surface is sprayed with a microcapsule self-healing protective coating. The running path of the circulating chain is enclosed in the drive seat, and is matched with a dynamic sealing assembly and an atomizing spraying mechanism made of silicone material to achieve anti-corrosion, anti-fouling and anti-rust effects of the chain. The chain of the present invention has high overall strength, strong corrosion resistance and strong self-repairing ability. It is particularly suitable for car body processing lines under high humidity and high corrosion conditions, and has good protection effect and service life.

Description

Technical Field

[0001] The present invention relates to the technical field of conveyors, in particular to a rust-proof chain conveyor for vehicle body processing. Background Art

[0002] Chain conveyors are widely used in automobile manufacturing, painting, cleaning, pickling, and other body processing processes, often for the continuous transport of body baskets. Existing chain conveyors typically utilize metal links and connecting pins. A sprocket drives the chain back and forth, driving the basket structure fixed to the chain along a track for transport. To provide guidance, traditional structures feature sliding pins and guide rods at the bottom of the basket, which slide into guide grooves in the conveyor base, supporting and guiding the material during operation.

[0003] In car body processing processes such as spraying, pickling, and phosphating, the conveyor operating environment is often accompanied by harsh working conditions such as high humidity, high corrosion, and high pollution. Traditional metal chain structures have the following major problems: existing chain links and link pins are generally made of alloy steel or stainless steel. Even if the surface is treated with rust prevention, it is still difficult to resist the long-term corrosion and erosion of acid and alkali mist, water vapor or salt spray environment. In particular, the chain link connection parts are prone to become corrosion concentrated areas, resulting in chain link wear and structural loosening, which seriously affects the conveying stability and service life.

[0004] Secondly, traditional chain links are mostly rigid metal structures, with rigid joints at the interface, lacking flexible buffering. When microcracks or localized damage occur in the chain links, they are unable to self-repair, which can easily lead to chain breakage or premature failure. Furthermore, chain links require high maintenance and are frequently replaced manually, increasing operational costs. Existing chain conveyor structures are relatively crude in terms of anti-fouling and splash-proof design. The guide grooves are often left exposed, allowing contaminated liquids, dust, and water vapor to easily enter the guide grooves and adhere to the chain surface during spraying or handling. This is especially true in environments with multi-point spraying or acid mist. Dirt accumulation or localized scaling can easily form on the chain surface, seriously affecting operational stability and rust resistance.

[0005] In summary, existing chain conveyors have obvious defects in the selection of chain link materials, the corrosion resistance of the connection structure, the self-protection ability of the chain body, and the ability to isolate dirty liquids during operation. There is an urgent need for a chain conveying structure with excellent corrosion resistance, self-repairing ability and structural sealing to meet the high-reliability conveying requirements under highly corrosive working conditions such as car body processing. Summary of the Invention

[0006] The present invention relates to the technical field of conveying equipment, in particular to a rust-proof chain conveyor suitable for use in a vehicle body processing process, which has good structural stability and corrosion resistance.

[0007] In order to solve the problem that existing chain conveyor equipment is prone to rust and requires frequent maintenance under high humidity and high corrosion conditions, the present invention provides the following technical solutions:

[0008] A rust-proof chain conveyor for handling car bodies comprises a drive base, a car body basket, a transmission assembly, and a dynamic seal assembly. The drive base is provided with a sliding guide groove and a motor. The transmission assembly comprises several sprockets rotatably mounted on the inside of the drive base and an endless chain sleeved on the surface of the sprockets. One of the sprockets is in driving connection with the output end of the motor. A slide pin and a guide pin are provided on either side of the car body basket, respectively. These slide pins and guide pins are slidably sleeved within the sliding guide groove. One end of the slide pin passes through the guide groove and is fixedly connected to a traction ear, which is used to connect to the surface of the circulating chain. The circulating chain is formed into a chain shape by a combination of several link pins and segments. The surface of the segment is provided with a link ear for connecting to the traction ear. The link pins and segments are integrally molded using multi-directional woven carbon fiber reinforced polymer composite materials. Pin holes are reserved at both ends of the segment, and the pin hole opening is provided with a slightly convex annular sealing lip. The sealing lip is used to form a contact and compression structure with the link pin to prevent moisture and dust from entering the connection part. The dynamic sealing assembly includes a first pressure ring and a second pressure ring. The first pressure ring is connected to the end of the guide pin rod, and the second pressure ring is interference-fitted on the surface of the slide pin. Both of them slide against the inner wall of the drive seat. Through the mechanical linkage between the chain and the vehicle body basket and the sliding fit of the guide groove, a stable and precise conveying action is achieved. The combination of carbon fiber reinforced material and molding and sealing structure effectively improves corrosion resistance and durability. The setting of the dynamic sealing assembly helps to isolate pollutants and protect the circulating chain from corrosion.

[0009] Furthermore, a flexible thermoplastic rubber ring is embedded in the inner wall of the pin hole of the segment, and a layer of self-healing protective coating containing microcapsules is sprayed on the surface of the connecting pin and the segment. When microcracks or scratches occur on the surface, the microcapsules automatically rupture and release the sealant, thereby achieving local self-repair of the coating.

[0010] This structure can further improve the sealing and buffering performance of the chain link connection parts, while enhancing the self-protection ability of the chain surface in harsh environments, thereby reducing maintenance frequency and extending service life.

[0011] Furthermore, the segments utilize a multi-axial fiber layup structure with angles of 0°, ±45°, and 90°, and are formed through laminate molding to enhance the segments' tensile strength, shear strength, and fatigue resistance. This multi-axial laminated structure effectively resists load impacts from various directions, ensuring that the chain links are less susceptible to fatigue cracking under long-term high-load operation, further enhancing overall reliability.

[0012] Furthermore, the sliding pin and guide pin rod of the vehicle body support basket are located in the same horizontal plane, and the sliding guide groove is a double annular groove structure used to guide the sliding of the sliding pin and guide pin rod respectively, and the two guide grooves overlap up and down in space to achieve synchronous guidance, so that the vehicle body support basket can always maintain a horizontal supporting state during the transportation process.

[0013] This structure can effectively prevent the basket from tilting or deflecting during transportation, ensuring the stability of the vehicle body positioning and facilitating the precision control of subsequent processes.

[0014] Furthermore, the first pressure ring and the second pressure ring are silicone material components, which are used to slide and engage with the inner wall of the driving seat to form a blocking structure for the sliding guide groove, thereby reducing the adhesion of stains to the surface of the circulation chain.

[0015] The sealing effect formed by flexible sliding contact can effectively block the intrusion of impurities such as spray and acid mist, protect the chain from surface deposits, and improve the cleanliness and corrosion resistance of the equipment.

[0016] Furthermore, the vehicle body basket is an integrally formed structure, and a reinforcing rib structure is provided at the bottom to improve the load-bearing capacity. At the same time, a drainage hole is provided for timely discharge of liquid under cleaning or wet conditions to prevent liquid accumulation and adhesion to the chain surface.

[0017] This structural design enhances the rigidity of the basket, adapts to the weight requirements of the vehicle body, and can effectively cope with high humidity environments, keeping the chain surface dry and preventing corrosion caused by water accumulation.

[0018] Furthermore, the circulation chain is arranged in a closed guide rail cavity, which is enclosed by the inner cavity of the drive seat and the dynamic sealing assembly to form a semi-enclosed space, thereby achieving effective isolation of moisture, dust and acidic and alkaline gases.

[0019] This semi-enclosed structure creates a local "protective climate" for the chain operation, which helps to improve the long-term operation reliability and protection capabilities of the chain, and is particularly suitable for highly corrosive process environments.

[0020] Furthermore, an atomizing spraying mechanism is provided inside the driving seat. The spraying mechanism is arranged above the running path of the circulating chain and is used to regularly spray anti-rust lubricant to the surface of the chain links to further inhibit wear and corrosion.

[0021] As an active protection measure, the spray structure can periodically form a lubricating film on the chain surface, improving its wear resistance and corrosion resistance, and cooperate with the sealing structure to form a multiple anti-rust protection system.

[0022] The beneficial effects achieved by the present invention are:

[0023] 1. In this invention, multi-directional woven carbon fiber reinforced polymer composite materials are used to construct chain segments and link pins, and combined with a compression molding process and a pin hole sealing lip structure, it effectively avoids the rust problem of traditional metal chains in acid, alkali, high humidity, and high salt spray environments. It has excellent corrosion resistance and structural strength and is suitable for demanding body processing conditions.

[0024] 2. In the present invention, flexible thermoplastic rubber rings are provided on the inner walls of the pin holes at both ends of the chain segments, and a microcapsule-type self-healing protective coating is sprayed on the surface of the chain segments. When the chain segments are slightly damaged, the sealant can be automatically released to form self-repair, which significantly improves the wear resistance, corrosion resistance and service life of the chain during operation and reduces the maintenance frequency.

[0025] 3. In the present invention, a double-annular sliding guide groove structure and symmetrically distributed sliding rod pins and guide pin rods are set up, combined with a dynamic sealing component made of silicone material. At the same time, on the basis of the dynamic sealing component maintaining the horizontal operation of the vehicle body basket, it effectively blocks impurities and water vapor from being directly sprayed and attached to the surface of the circulating chain through the sliding guide groove, constructing a chain splash-proof adhesion protection structure and improving the overall protection performance.

[0026] 4. In the present invention, an atomizing spray mechanism is provided inside the driving seat, which can regularly spray anti-rust lubricant onto the chain surface to form a thin film protective layer. The semi-enclosed guide structure formed by the guide rail cavity can further isolate the influence of the external corrosive environment on the chain, thereby realizing the active protection effect of the "material-structure-environment" triple linkage. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention;

[0028] Figure 2 This is a schematic diagram of the inner structure of a drive seat according to an embodiment of the present invention;

[0029] Figure 3 This is a schematic diagram of the vehicle body basket transmission structure according to one embodiment of the present invention;

[0030] Figure 4 This is a schematic diagram of the surface structure of a vehicle body basket according to an embodiment of the present invention;

[0031] Figure 5 This is a schematic structural diagram of a dynamic sealing assembly according to an embodiment of the present invention;

[0032] Figure 6 Schematic diagram of a circulating chain structure according to an embodiment of the present invention.

[0033] Reference numerals:

[0034] 100, driving seat; 110, guide groove; 120, motor;

[0035] 200, vehicle body basket; 210, slide pin; 220, guide pin rod; 211, traction ear;

[0036] 300, transmission assembly; 310, sprocket assembly; 320, endless chain; 321, connecting pin; 322, segment; 323, connecting ear;

[0037] 400, dynamic sealing assembly; 410, first pressure ring; 420, second pressure ring. DETAILED DESCRIPTION

[0038] To make the purpose, technical solutions and advantages of the present invention more clear, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be noted that the embodiments of the present invention and the features therein can be combined with each other without conflict.

[0039] It is to be understood that these descriptions are illustrative only and are not intended to limit the scope of the invention.

[0040] A rust-proof chain conveyor for car body processing provided by some embodiments of the present invention will be described below with reference to the accompanying drawings.

[0041] Example 1:

[0042] like Figures 1 to 6 As shown, this embodiment provides a rust-proof chain conveyor for car body processing, which is suitable for conveying car bodies in anti-corrosion processes such as pickling, cleaning, and spraying in automobile production, and has good rust-proof performance and structural reliability.

[0043] The conveyor includes: a driving seat 100, a vehicle body basket 200, a transmission assembly 300, and a dynamic sealing assembly 400.

[0044] 1. Drive structure

[0045] The driving seat 100 is a closed frame structure with a guide groove 110 provided inside for guiding the vehicle body basket 200 to slide. The driving seat 100 is provided with a motor 120 for driving the sprocket assembly 310 in the transmission assembly 300 to rotate.

[0046] The sprocket set 310 is fixedly installed inside the driving seat 100 and driven by the motor 120. One of the sprocket sets 310 is connected to the output end of the motor 120 through a coupling, thereby driving the entire circulating chain 320 to run along a fixed track.

[0047] 2. Basket and connection structure

[0048] The vehicle body basket 200 is an integrated structure, with a slide pin 210 and a guide pin rod 220 provided on its left and right sides respectively. The two slide together in the slide guide groove 110 on the drive seat 100 to ensure stable guidance during operation.

[0049] One end of the slide pin 210 passes through the slide guide groove 110 and is fixedly connected to a traction ear 211 for connecting with the link ear 323 on the circulating chain 320 to achieve linkage transmission between the vehicle body basket 200 and the circulating chain 320 .

[0050] The end of the guide pin rod 220 is connected to the first pressure ring 410 in the dynamic seal assembly 400 to achieve anti-fouling sealing cooperation between the basket assembly and the guide groove.

[0051] 3. Chain structure and anti-rust characteristics

[0052] The circulating chain 320 is composed of a plurality of linking pins 321 and segments 322 that are alternately combined. The segments 322 are provided with linking ears 323 on their surfaces, which cooperate with the traction ears 211 on the vehicle body basket 200 to connect.

[0053] Both the segments 322 and the link pin 321 are integrally molded from a multi-directional woven carbon fiber reinforced polymer composite material, enhancing structural strength and corrosion resistance. Preferred materials include CF / PEEK or glass fiber / PA composite matrices, which offer advantages such as high strength, fatigue resistance, and resistance to electrochemical corrosion.

[0054] Pin holes are provided at both ends of the segment 322 for plugging and connecting with the link pin 321. The outer edge of the pin hole is integrally formed with a slightly convex annular sealing lip for forming a tight contact with the link pin 321 to prevent moisture and dust from penetrating the connection gap.

[0055] Furthermore, a flexible thermoplastic rubber ring (such as TPU or EPDM) is pre-embedded in the inner wall of the pin hole of the segment 322, which plays a triple protection role of sealing, vibration prevention and wear resistance.

[0056] The outer surfaces of the segments 322 and the link pin 321 are also sprayed with a self-healing protective coating containing microcapsules. When microcracks or scratches appear on the surface, the microcapsules in the coating automatically rupture, releasing the sealant to achieve local repair of the coating and prevent the onset of corrosion.

[0057] At the same time, the segment 322 adopts 0°, ±45°, and 90° multi-axial fiber laying technology and laminated molding, so that the segment 322 has excellent tensile strength, shear strength and fatigue life.

[0058] 4. Guide and sealing structure

[0059] The guide groove 110 of the driving seat 100 adopts an upper and lower double annular groove structure, which guides the sliding pin 210 and the guide pin rod 220 to slide respectively; the two guide grooves overlap with each other in space, forming a three-dimensional annular closed trajectory, thereby ensuring that the front and rear ends of the vehicle body basket 200 always remain synchronized during operation, the lifting state is stable, and it is suitable for balanced transportation of the vehicle body.

[0060] The dynamic sealing assembly 400 includes a first pressure ring 410 and a second pressure ring 420, both of which are made of flexible silicone material. They are respectively sleeved on the surfaces of the guide pin rod 220 and the sliding pin 210, and slide in contact with the inner wall of the drive seat 100 to achieve partial sealing of the sliding guide groove 110.

[0061] In this embodiment, the first pressure ring 410 is fixed to the end of the guide pin 220, and the second pressure ring 420 is sleeved onto the surface of the slide pin 210 with an interference fit. The dynamic seal assembly 400 does not need to completely seal the guide groove 110; it only blocks some dirt and impurities from entering through the sealing structure, preventing them from adhering to the surface of the endless chain 320, thereby achieving a chain protection effect.

[0062] 5. Additional protection functions

[0063] An atomizing spray mechanism is provided inside the drive seat 100 for regularly spraying anti-rust lubricant on the exposed parts of the circulating chain 320 on the running path, thereby enhancing the running stability and durability of the chain under high humidity and high corrosion conditions.

[0064] Example 2 (enhanced structure example):

[0065] This embodiment expands upon the first embodiment in the following ways:

[0066] Reinforcement ribs are provided at the bottom of the vehicle body support basket 200 to improve the carrying capacity of large-size vehicle bodies; drainage holes are also provided on the bottom of the support basket for automatic discharge of process liquids such as pickling and spraying to prevent liquids from accumulating on the surface of the chain and causing corrosion.

[0067] The running path of the circulating chain 320 is set in the closed guide rail cavity. The guide rail cavity is formed by the internal cavity of the driving seat 100 and the dynamic sealing assembly 400 to form a semi-enclosed structure, which can effectively isolate acid mist, salt mist and dust, and enhance the long-term protection effect of the chain.

[0068] The atomizing spray mechanism adopts a timing control solenoid valve + anti-rust oil mist nozzle, which can set the running interval spraying to achieve timed film protection on the working surface of the chain link to inhibit wear and corrosion.

[0069] To sum up, the rust-proof chain conveyor for car body processing provided by the present invention has a reasonable structural design. By adopting a fiber-reinforced segment chain structure, a pin hole sealing structure, a microcapsule protective coating, a basket and guide mechanism coordinated design, a local anti-fouling sealing structure and an atomizing spray system, while ensuring the conveying stability, the rust-proof and durable performance of the chain system is effectively improved. It is particularly suitable for complex working conditions involving strong corrosion, continuous operation, etc. in automobile production lines.

[0070] Throughout this specification, terms such as "one embodiment," "some embodiments," and "specific embodiments" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, illustrative uses of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0071] Although the 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 invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A rust-proof chain conveyor for car body processing, characterized in that: The invention comprises a driving seat (100), a vehicle body basket (200), a transmission assembly (300) and a dynamic sealing assembly (400), wherein the surface of the driving seat (100) is provided with a sliding guide groove (110) and a motor (120), and the transmission assembly (300) comprises a plurality of sprocket groups (310) rotatably mounted on the inner side of the driving seat (100) and a circulating chain (320) sleeved on the surface of the sprocket group (310), wherein one of the sprocket groups (310) ) is transmission-connected to the output end of the motor (120), a slide pin (210) and a guide pin rod (220) are provided on both sides of the vehicle body support basket (200), and the slide pin (210) and the guide pin rod (220) are slidably sleeved on the inner side of the slide guide groove (110), one end of the slide pin (210) passes through the slide guide groove (110) and is fixedly connected to a traction ear (211), and the traction ear (211) is used to connect to the surface of the circulating chain (320); The dynamic sealing assembly (400) includes a first pressure ring (410) and a second pressure ring (420), wherein the surface of the first pressure ring (410) is connected to the end of the guide pin rod (220), and the second pressure ring (420) is interference-fitted on the surface of each slide pin (210), and the first pressure ring (410) and the second pressure ring (420) are in sliding contact with the inner wall of the drive seat (100).

2. The rust-proof chain conveyor for car body processing according to claim 1, characterized in that: The circulating chain (320) comprises a plurality of linking pins (321) and segments (322), and a complete chain is formed by combining the plurality of linking pins (321) and segments (322). The surface of the segment (322) is provided with a linking ear (323) for connecting with the traction ear (211).

3. The rust-proof chain conveyor for car body processing according to claim 2, characterized in that: The link pin (321) and the segment (322) are integrally molded using a multi-directional woven carbon fiber reinforced polymer composite material. Pin holes for connection with the link pin (321) are reserved at both ends of the segment (322). A micro-convex annular sealing lip is formed at the pin hole opening. The sealing lip is used to form a contact and compression structure with the link pin (321).

4. The rust-proof chain conveyor for car body processing according to claim 2, characterized in that: Flexible thermoplastic rubber rings are pre-embedded in the inner walls of the pin holes at both ends of the segment (322), and a layer of microcapsule-type self-healing protective coating is sprayed on the surfaces of the link pin (321) and the segment (322).

5. The rust-proof chain conveyor for car body processing according to claim 2, characterized in that: The segments (322) adopt a 0°, ±45°, and 90° multi-axial fiber laying structure and are formed by lamination molding.

6. The rust-proof chain conveyor for car body processing according to claim 1, characterized in that: The slide pin (210) and the guide pin rod (220) on the surface of the vehicle body support basket (200) are located on the same horizontal plane, and the slide guide groove (110) is a double annular groove structure, which is used to guide the sliding of the slide pin (210) and the guide pin rod (220), and the double annular grooves overlap with each other on the upper and lower horizontal planes, and are used to synchronously guide the slide pin (210) and the guide pin rod (220).

7. The rust-proof chain conveyor for car body processing according to claim 1, characterized in that: The first pressure ring (410) and the second pressure ring (420) are both silicone material components, and are used for sliding engagement with the inner wall surface of the drive seat (100).

8. The rust-proof chain conveyor for car body processing according to claim 1, characterized in that: The vehicle body support basket (200) is an integrally formed structure, a reinforcing rib structure is provided at the bottom thereof for improving the overall load-bearing capacity, and a drainage through hole is provided on the bottom surface.

9. The rust-proof chain conveyor for car body processing according to claim 1, characterized in that: The circulating chain (320) is arranged in a closed guide rail cavity, and the guide rail cavity is composed of a semi-enclosed space formed by the inner cavity of the drive seat (100) and the dynamic sealing component (400).

10. The rust-proof chain conveyor for car body processing according to claim 1, characterized in that: An atomizing spraying mechanism is provided inside the driving seat (100), and the atomizing spraying mechanism is arranged above the running track of the circulating chain (320).

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