A post-coat paint splitting device for collinear spraying

Abstract

The present application relates to the field of workpiece spraying, in particular to a post-painting line splitting device for collinear spraying, comprising a main conveying line and a sub-conveying line as well as a material changing module, a plurality of hanging piece modules moving synchronously are arranged on the main conveying line and the sub-conveying line; the hanging piece module comprises a main line assembly arranged on the main conveying line and a sub-line assembly arranged on the sub-conveying line, and the workpiece is hung on the corresponding main line assembly and sub-line assembly; the material changing module comprises a pushing unit matched with the main conveying line and a receiving unit matched with the sub-conveying line; the present application realizes efficient and stable flow splitting of the post-spraying workpiece between the main line and the sub-line, and precise material changing can be completed without relying on a complex electric control system, the handover process is ensured reliable through pure mechanical cooperative action, the operation stability and maintenance convenience under harsh working conditions are significantly improved, the overall scheme simplifies the control logic, enhances the continuous operation ability of the production line, is suitable for multi-variety collinear spraying scene, and takes into account safety and economy.

Description

Technical Field

[0001] This invention relates to the field of workpiece spraying, specifically to a paint separation device for collinear spraying. Background Technology

[0002] In the painting production lines of automobiles, home appliances, and other products, a co-line painting process is often used to improve equipment utilization and production flexibility. This involves painting workpieces of different materials or models on the same painting line. After painting, a sorting device is needed to precisely divert the workpieces from the main conveyor line to different subsequent processing lines. Currently, mainstream sorting devices generally rely on an electronic control mode of "sensor detection + PLC control + electric / pneumatic actuation" to achieve workpiece handover and line changeover. While this mode can achieve basic functions in a clean environment, its inherent defects are very prominent in the harsh conditions of the painting workshop, characterized by high paint mist, high humidity, and the presence of volatile organic compounds: photoelectric sensor windows are easily blocked by paint mist, leading to detection failure; electronic control components are susceptible to corrosion or electromagnetic interference, causing signal misinterpretation; and pneumatic components may experience sluggish operation due to air source contamination. These problems directly lead to poor reliability and frequent misoperations during the material changeover process, affecting not only the continuous operation capability of the production line but also significantly increasing maintenance costs and downtime.

[0003] Furthermore, existing line separation devices are mostly designed for single workpiece types or fixed production cycles, and their clamping, positioning, and handover mechanisms lack the ability to adapt to multi-product, variable-cycle co-production scenarios. When the production line needs to frequently switch workpiece types or adjust the production rhythm, it often requires stopping the machine for complex parameter resets or mechanical adjustments, which severely restricts production efficiency and flexibility.

[0004] Patent application number 202420100411.7 discloses a stable hanging item conveying device, including a track and multiple legs for supporting the track. A chain is slidably threaded through the track, and the chain is arranged along the length of the track. Multiple rollers are rotatably connected to both sides of the chain, and the rollers are rolled within the track. A drive assembly for moving the chain is provided on the side wall of the track. Multiple hooks for suspending hanging items are provided on the chain. A top rod is slidably connected to each hook, with one end of the top rod passing through the hook and a fixing plate provided at the end of the top rod extending out of the hook. A first tension spring is provided between the fixing plate and the hook. This application has the effect of reducing swaying during the hanging item conveying process.

[0005] Patent application number 202210603307.5 discloses an anti-drop floating mechanism for accumulating chain hanging parts conveying. It employs a conveyor tray fixed to a movable base; an anti-drop device on the conveyor tray; and a hanging fixture fixed to the conveyor tray. The hanging fixture is positioned on one side of the anti-drop device. Workpieces are suspended from the hanging fixture. When the workpiece suddenly stops, the anti-drop device repositions it. Because a magnet is installed above the anti-drop device, and the slider is pulled by a spring, when the device suddenly stops, the magnet moves backward with the workpiece. Under the pull of the spring, it returns to its original position and is attracted by the fixed magnet. Therefore, it ensures that the workpiece will not detach from the magnet, affecting the robot's picking up of parts, thus achieving stable transportation.

[0006] However, the following problems still exist in practical applications, specifically: 1. All of them focus on the stability or anti-detachment protection of the hanging parts on a single conveying path, without addressing the material exchange and handover mechanism between the main line and the branch line, and without solving the positioning, locking and releasing problems in the cross-line diversion process.

[0007] 2. Current systems heavily rely on an electrical control signal chain comprised of sensors, controllers, and pneumatic / electric actuators to perform position detection, status judgment, and action triggering. In the high-temperature, high-humidity, and high-mist paint spraying workshop environment, these electrical control components are highly susceptible to contamination, corrosion, or electromagnetic interference, leading to signal misinterpretation, response delays, or even complete failure, resulting in material changeover failures, workpiece drops, or production line shutdowns. Furthermore, the complex electrical control system not only increases equipment costs and maintenance difficulty but also limits the production line's adaptability to flexible production of multiple varieties and small batches. In contrast, this application eliminates the reliance on the electrical control signal chain, achieving automatic handover and self-locking positioning of workpieces between the main line and branch lines entirely through the geometric fit and elastic mechanical response of a purely mechanical structure.

[0008] Therefore, overcoming the aforementioned technical problems and defects has become a key issue that needs to be addressed. Summary of the Invention

[0009] The purpose of this invention is to overcome the defects described in the background art, thereby realizing a paint separation device for co-line spraying. This device achieves efficient and stable separation of painted workpieces between the main line and the separation line, completes precise material changing without relying on a complex electronic control system, ensures reliable handover through pure mechanical coordinated action, effectively avoids misoperation caused by signal interference or sensor failure, significantly improves operational stability and maintenance convenience under harsh working conditions, simplifies control logic, enhances the continuous operation capability of the production line, is suitable for multi-variety co-line spraying scenarios, and balances safety and economy.

[0010] To achieve the above-mentioned objectives, the technical solution of the present invention is: a paint splitting device for co-line spraying, comprising a main conveyor line, a sub-conveyor line, and a material changing module, wherein multiple synchronously moving hanging modules are provided on both the main conveyor line and the sub-conveyor line.

[0011] The hanging module includes a main line assembly set on the main conveyor line and a branch line assembly set on the branch conveyor line, with the workpiece hanging on the corresponding main line assembly and branch line assembly.

[0012] The material changing module includes a pushing unit that works in conjunction with the main conveyor line and a receiving unit that works in conjunction with the sub-conveyor line.

[0013] In the above-mentioned paint separation device for co-line spraying, the main line assembly includes a main base plate fixedly installed on the main conveyor line, and the main base plate has an L-shaped structure with the horizontal part located on the lower side.

[0014] The main base plate is provided with a main top plate that can slide along the length of the horizontal part of the main base plate. The main top plate is an L-shaped structure with the horizontal part located on the upper side, and the vertical part of the main top plate is arranged opposite to the vertical part of the main base plate.

[0015] A gap is left between the horizontal portions of the main top plate and the main bottom plate, and the workpiece is hung in the gap. A first push plate is fixedly installed at the bottom end of the horizontal portion of the main top plate, facing away from its vertical portion. The bottom end of the first push plate abuts against the top end of the horizontal portion of the main bottom plate.

[0016] In the above-mentioned paint separation device for collinear spraying, at least one positioning rod is horizontally fixedly installed on the vertical part of the main base plate, and the end of the positioning rod horizontally penetrates the horizontal part of the main top plate and is slidably connected to the main top plate.

[0017] The horizontal part of the main top plate has a through hole adapted to the positioning rod. A first spring is sleeved on the positioning rod inside the through hole. The end diameter of the positioning rod is larger than the outer diameter of the first spring. A detachable baffle is provided at the top of the vertical part of the main top plate to block the through hole. A fixing bolt is rotatably provided on the baffle. The working end of the fixing bolt passes through the baffle and is threadedly connected to the main top plate.

[0018] In the above-mentioned paint separation device for co-line spraying, the separation assembly includes a separation base plate, which is an L-shaped structure with the horizontal part located on the lower side, and the vertical part of the separation base plate is arranged opposite to the vertical part of the main top plate.

[0019] The bottom plate is provided with a top plate that can slide along the length of the horizontal part of the bottom plate. The top plate is fixedly installed on the conveyor line. The top plate has an L-shaped structure with the horizontal part on the upper side, and the vertical part of the top plate is arranged opposite to the vertical part of the bottom plate.

[0020] A gap is left between the horizontal portions of the top plate and the bottom plate, and the workpiece is hung in the gap. A second push plate is fixedly installed at the bottom end of the horizontal portion of the bottom plate, facing away from its vertical portion. The top end of the second push plate abuts against the bottom end of the horizontal portion of the top plate.

[0021] In the above-mentioned paint separation device for co-line spraying, a sliding frame is horizontally slidably installed at the bottom end of the side wall of the vertical part of the top plate facing away from the bottom plate. The sliding frame is a U-shaped structure with its opening facing the top plate. Limiting grooves are opened on both arms of the sliding frame. Limiting plates that can slide in the limiting grooves are fixedly installed on both sides of the vertical part of the top plate.

[0022] The vertical part of the top plate has horizontally opened positioning grooves on both sides, which are adapted to the two arms of the sliding frame.

[0023] A second spring is horizontally fixed at the middle turning part of the sliding frame, and the other end of the second spring is fixedly fixed at the vertical part of the top plate.

[0024] In the above-mentioned paint separation device for co-line spraying, a snap-fit ​​plate is horizontally fixed on both sides of the vertical part of the top plate. The snap-fit ​​plate is an elastic element and its end faces the bottom plate.

[0025] A wedge-shaped block is provided at the middle position on the side of the snap-fit ​​plate facing the top plate. The wedge-shaped block is located inside the positioning groove, and the side arm of the sliding frame can abut against the inclined surface of the wedge-shaped block.

[0026] The end of the snap-fit ​​plate is fixedly provided with a snap-fit ​​block on the side facing the bottom plate. The snap-fit ​​block is a right-angled triangular structure with an inclined surface that can abut against the end of the bottom plate. Both sides of the bottom plate are provided with snap-fit ​​grooves that can be adapted to the corresponding snap-fit ​​blocks.

[0027] In the above-mentioned paint separation device for co-line spraying, the pushing unit includes a mounting base connected to an external support body. A first electric push rod is horizontally fixed on the mounting base. The telescopic end of the first electric push rod faces the main base plate. The top of the vertical part of the main base plate is provided with a top groove for the telescopic end of the first electric push rod to pass through. The telescopic end of the first electric push rod can abut against the horizontal end of the main top plate, and the main top plate is moved by the first electric push rod.

[0028] A docking plate is fixedly installed at the bottom of the main base plate, and a position sensor for detecting the position of the docking plate is installed on the mounting base.

[0029] In the above-mentioned paint splitting device for co-line spraying, a second electric push rod is horizontally fixedly installed on the side of the mounting base, and a pull ring is fixedly installed on the telescopic end of the second electric push rod.

[0030] A swing arm is hinged to the side of the mounting base. The hinge position between the swing arm and the mounting base is located in the middle of the swing arm. The bottom end of the swing arm is inserted into the pull ring. A slide rod is slidably mounted on the top end of the swing arm. A tactile switch that can abut against the side wall of the main base plate is fixedly mounted on the end of the slide rod. A third spring is sleeved on the slide rod. The two ends of the third spring abut against the tactile switch and the swing arm, respectively.

[0031] In the above-mentioned paint splitting device for co-line spraying, the receiving unit includes a support base connected to an external support body. A displacement groove is vertically opened on the support base, and a displacement block is slidably arranged inside the displacement groove. A fourth electric actuator is vertically fixed on the support base, and the telescopic end of the fourth electric actuator is fixedly arranged at the bottom end of the displacement block.

[0032] In the above-mentioned paint separation device for collinear spraying, a fifth electric push rod is horizontally fixed on the side of the displacement block facing the bottom plate. A connecting plate is fixedly installed at the telescopic end of the fifth electric push rod. A magnetic plate that can be matched with the bottom end of the bottom plate is fixedly installed at the top of the connecting plate. The bottom plate is pushed to move directly below the main top plate by the fifth electric push rod and the connecting plate.

[0033] A sixth electric push rod is provided on the upper part of the fifth electric push rod. The telescopic end of the sixth electric push rod can abut against the middle turning part of the sliding frame, and the sliding frame is moved by the sixth electric push rod.

[0034] Compared with the prior art, the paint separation device for collinear spraying of the present invention has at least the following beneficial effects: The paint separation device for co-line spraying of this invention achieves precise and reliable handover of the hanging module between the main conveyor line and the sub-conveyor line, completely eliminating the reliance on complex electrical control signal chains in traditional separation equipment. Its core lies in the hanging module's use of a bidirectional elastic clamping gap structure formed by an L-shaped main base plate and main top plate, and sub-base plate and sub-top plate. The workpiece is stably hung within the gap between the horizontal sections, and self-locking is achieved through the abutment relationship between the first push plate, the second push plate, and the corresponding base plate. Combined with a guide and reset assembly consisting of a positioning rod, a first spring, and a detachable baffle, it ensures smooth and non-deviation-free sliding of the main top plate, while facilitating subsequent maintenance and disassembly. This not only avoids malfunctions caused by sensor failure or signal delays but also significantly improves the device's operational reliability and maintenance convenience under harsh conditions such as high temperature and high paint mist, fundamentally solving the technical problems of poor environmental adaptability and high failure rate of existing electrical control separation devices.

[0035] The paint separation device for co-line spraying of this invention achieves seamless transfer of workpieces from the main line to the separation line through the coordinated mechanical actions of the pushing unit and the receiving unit. The pushing unit, using the mounting base as a reference, directly pushes the main top plate along the main bottom plate with the first electric push rod, causing the workpiece to detach from the main line clamping position. Simultaneously, the position sensor and tactile switch are only used to detect whether the docking plate has reached the preset position, without participating in clamping force control or motion trajectory adjustment, greatly simplifying the control logic. The receiving unit, through the cascaded drive of the fourth, fifth, and sixth electric push rods, first uses a magnetic plate to adsorb the separation bottom plate for initial positioning, then the sixth electric push rod pushes the sliding frame to compress the second spring, causing the wedge block on the locking plate to engage with the inclined surface of the sliding frame side arm to unlock, ultimately achieving automatic receiving and locking of the workpiece by the separation top plate. The entire material changing process is entirely dominated by the geometric fit of the mechanical structure and the mechanical response of the elastic elements. Even in the event of a brief power outage or sensor malfunction, the completed mechanical locking state can still maintain the safety of the workpiece, effectively preventing the risk of falling and significantly enhancing the robustness of continuous production line operation.

[0036] The paint separation device for collinear spraying of this invention features a sliding frame with matching limit grooves and positioning grooves in the separation assembly. Combined with the elastic wedge block and right-angled triangular locking block of the locking plate, a double mechanical interlocking mechanism is formed. This ensures the vibration resistance and stability of the top plate during transportation and allows for unlocking via a single-direction thrust during material receiving, eliminating the need for additional actuators. A flexible detection mechanism consisting of a tactile switch, swing rod, slide rod, and third spring only allows subsequent actions after physical contact confirmation, preventing damage to the workpiece from empty pushes or misalignment. All key motion pairs employ passive constraint methods such as spring preload, inclined plane guidance, and channel rail limiting, reducing reliance on active feedback control and enabling the device to maintain high precision while possessing strong fault tolerance and environmental adaptability. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the main component structure of the present invention; Figure 3 This is a schematic diagram of the feeding unit structure of the present invention; Figure 4 This is a schematic diagram of the position of the tactile switch of the present invention; Figure 5 This is a schematic diagram of the branching component structure of the present invention; Figure 6 This is a schematic diagram of the receiving unit structure of the present invention; Figure 7 This is an exploded view of the receiving unit of the present invention; Figure 8 This is a schematic diagram of the splitting process of the present invention.

[0038] In the diagram: 1. Main conveyor line; 2. Sub-conveyor line; 3. Material changing module; 31. Pushing unit; 3101. Mounting base; 3102. First electric push rod; 3103. Top groove; 3104. Docking plate; 3105. Position sensor; 3106. Second electric push rod; 3107. Pull ring; 3108. Swing rod; 3109. Slide rod; 3110. Tactile switch; 3111. Third spring; 32. Receiving unit; 321. Support base; 322. Displacement groove; 323. Displacement block; 324. Fourth electric actuator; 325. Fifth electric actuator; 326. Connecting plate; 327. Magnetic plate; 328. Sixth electric actuator; 4. Hanging module; 41. Main line assembly; 411. Main base plate; 412. Main top plate; 413. First push plate; 414. Positioning rod; 415. Through hole; 416. First spring; 417. Baffle; 418. Fixing bolt; 42. Divider assembly; 421. Divider base plate; 422. Divider top plate; 423. Second push plate; 424. Sliding frame; 425. Limiting groove; 426. Limiting plate; 427. Positioning groove; 428. Second spring; 429. Snap-fit ​​plate; 430. Wedge block; 431. Snap-fit ​​block; 432. Snap-fit ​​groove. Detailed Implementation

[0039] The paint separation device for collinear spraying of the present invention will be described in more detail below with reference to the accompanying drawings and specific embodiments.

[0040] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0041] See Figures 1-7 The paint separation device for co-line spraying in this embodiment achieves efficient and stable separation of painted workpieces between the main line and the separation line. It can complete precise material change without relying on a complex electronic control system. The reliable handover process is ensured by pure mechanical coordinated action, effectively avoiding misoperation caused by signal interference or sensor failure. It significantly improves the operational stability and maintenance convenience under harsh working conditions. The overall solution simplifies the control logic, enhances the continuous operation capability of the production line, and is suitable for multi-variety co-line spraying scenarios, taking into account both safety and economy.

[0042] In this embodiment, it mainly includes a main conveyor line 1, a branch conveyor line 2, and a material changing module 3. Multiple synchronously moving hanging modules 4 are installed on both the main conveyor line 1 and the branch conveyor line 2. These modules serve as the carrier and power source for the entire device, driving the hanging modules 4 to move synchronously. The main conveyor line 1 transports the painted workpiece to the material changing station, while the branch conveyor line 2 receives the workpiece and transports it to subsequent processing steps. The structure and shape of the main conveyor line 1 and the branch conveyor line 2 are set according to actual implementation requirements; the structure shown in the figure is only an example. The hanging module 4 includes a main line assembly 41 installed on the main conveyor line 1 and a branch line assembly 42 installed on the branch conveyor line 2. Workpieces are hung on the corresponding main line assembly 41 and branch line assembly 42. The main line assembly 41 is responsible for firmly clamping the workpiece during the painting process, while the branch line assembly 42 is responsible for receiving and continuing to transport the workpiece after branching. Although their structures are similar, their coordination logic differs, together forming the mechanical basis of "clamping-releasing-receiving."

[0043] The main line assembly 41 includes a main base plate 411 fixedly mounted on the main conveyor line 1. The main base plate 411 has an L-shaped structure with its horizontal portion at the bottom. It provides a supporting reference surface for the workpiece, while its vertical portion is used to install guiding and positioning components. A main top plate 412 is provided on the main base plate 411 and can slide along the length of its horizontal portion. The main top plate 412 has an L-shaped structure with its horizontal portion at the top, and its vertical portion is opposite to that of the main base plate 411. A gap is left between the horizontal portions of the main top plate 412 and the main base plate 411. The workpiece is hung in this gap, and its L-shaped structure (horizontal portion on top) forms a vertically opposite clamping gap with the horizontal portion of the main base plate 411 for hanging the workpiece. By sliding to change the size or position of the gap, the locking and releasing of the workpiece can be achieved. A first push plate 413 is fixedly installed at the bottom of the horizontal portion of the main top plate 412, opposite to its vertical portion. The bottom end of the first push plate 413 abuts against the top end of the horizontal portion of the main bottom plate 411. When the external pushing unit 31 is activated, it directly pushes the main top plate 412, thereby causing the first push plate 413 to move. This is the key force point for performing the "clamping" or "displacement" action.

[0044] At least one positioning rod 414 is horizontally fixedly installed on the vertical part of the main base plate 411. The end of the positioning rod 414 horizontally penetrates the horizontal part of the main top plate 412 and is slidably connected to the main top plate 412. This restricts the movement trajectory of the main top plate 412, ensuring that it can only slide in a straight line in the horizontal direction, preventing jamming or deflection. The horizontal part of the main top plate 412 has a through hole 415 adapted to the positioning rod 414. A first spring 416 is sleeved on the positioning rod 414 inside the through hole 415. The end diameter of the positioning rod 414 is larger than the outer diameter of the first spring 416, providing a reset spring force or preload force to ensure that the main top plate 412 maintains a specific position without external force, or can automatically return to its original position after being deformed by force, ensuring the stability of clamping. A detachable baffle 417 is provided at the top of the vertical portion of the main top plate 412. The baffle 417 blocks the through hole 415. A fixing bolt 418 is rotatably mounted on the baffle 417. The working end of the fixing bolt 418 passes through the baffle 417 and is threadedly connected to the main top plate 412. This serves to seal the opening of the through hole 415, preventing the first spring 416 from falling off or foreign objects from entering the guide mechanism, and also serves as a limiting protection function.

[0045] The dividing assembly 42 includes a dividing base plate 421, which is an L-shaped structure with its horizontal portion at the bottom. The vertical portion of the dividing base plate 421 is opposite to the vertical portion of the main top plate 412. During the receiving process, it needs to be unlocked and moved to receive workpieces from the main assembly 41. A dividing top plate 422, which can slide along the length of the horizontal portion of the dividing base plate 421, is provided on the dividing base plate 421. The dividing top plate 422 is fixedly mounted on the dividing conveyor line 2. The dividing top plate 422 is an L-shaped structure with its horizontal portion at the top, and its vertical portion is opposite to the vertical portion of the dividing base plate 421. It cooperates with the dividing base plate 421 to form a clamping gap. A gap is left between the horizontal portions of the top plate 422 and the bottom plate 421, and the workpiece is hung in the gap. A second push plate 423 is fixedly installed at the bottom end of the horizontal portion of the bottom plate 421, opposite to its vertical portion. The top end of the second push plate 423 abuts against the bottom end of the horizontal portion of the top plate 422, thus maintaining the initial state in conjunction with the top plate 422. Simultaneously, the workpiece is pushed out during removal.

[0046] A sliding frame 424 is horizontally slidably mounted on the bottom side wall of the vertical portion of the top plate 422 facing away from the bottom plate 421. The sliding frame 424 is a U-shaped structure with its opening facing the top plate 422, directly controlling the locking and releasing states of the top plate 422, and acting as a "switch" for material receiving. Limiting grooves 425 are provided on both arms of the sliding frame 424, and limiting plates 426, which can slide within the limiting grooves 425, are fixedly mounted on both sides of the vertical portion of the top plate 422. These two components cooperate to form a guide rail, ensuring that the sliding frame 424 moves smoothly and steadily without shaking or derailment. Positioning grooves 427 are horizontally provided on both sides of the vertical portion of the top plate 422, each adapted to one of the arms of the sliding frame 424. These grooves accommodate the side arms and internal wedge-shaped blocks 430 of the sliding frame 424, providing space for its movement and defining its working stroke. A second spring 428 is horizontally fixedly installed at the middle turning point of the sliding frame 424, and the other end of the second spring 428 is fixedly installed at the vertical part of the top plate 422. This provides a restoring force to the sliding frame 424, ensuring that it remains in the locked position on the top plate 422 when not pushed by an external force, thus ensuring safe transportation.

[0047] On both sides of the vertical portion of the top plate 422, there are horizontally fixed locking plates 429. The locking plates 429 are elastic elements with their ends facing the bottom plate 421. Utilizing their elastic deformation capability, in conjunction with the wedge block 430 and the locking blocks 431, flexible locking and rigid positioning of the top plate 422 are achieved. A wedge block 430 is positioned at the middle of the side of the locking plate 429 facing the top plate 422. The wedge block 430 is located inside the positioning groove 427, and the side arm of the sliding frame 424 can abut against the inclined surface of the wedge block 430. When the sliding frame 424 moves and presses against the inclined surface of the wedge block 430, the locking of the bottom plate 421 is released. A snap-fit ​​block 431 is fixedly installed on the end of the snap-fit ​​plate 429 facing the bottom plate 421. The snap-fit ​​block 431 is a right-angled triangular structure with an inclined surface that can abut against the end of the bottom plate 421. Both sides of the bottom plate 421 are provided with snap-fit ​​grooves 432 that can be adapted to the corresponding snap-fit ​​blocks 431. The snap-fit ​​blocks 431 and the snap-fit ​​grooves 432 on the bottom plate 421 cooperate to form the final physical limit, preventing the top plate 422 from accidentally sliding out when not receiving material.

[0048] To achieve material pushing, see Figures 2-4The material changing module 3 includes a pushing unit 31 that cooperates with the main conveyor line 1 and a receiving unit 32 that cooperates with the sub-conveyor line 2. The pushing unit 31 includes a mounting base 3101 connected to an external support. A first electric push rod 3102 is horizontally fixed on the mounting base 3101. The telescopic end of the first electric push rod 3102 faces the main base plate 411 and provides active thrust. Its telescopic end passes through the top groove 3103 and directly abuts against the first push plate 413 of the main top plate 412, driving the main top plate 412 to slide, thereby opening the clamping gap of the main line assembly 41 and releasing the workpiece. The top of the vertical part of the main base plate 411 has a top groove 3103 for the telescopic end of the first electric push rod 3102 to pass through, providing a passage for the telescopic end of the first electric push rod 3102 and avoiding interference with the structural integrity of the main base plate 411. The telescopic end of the first electric actuator 3102 can abut against the horizontal end of the main top plate 412, thereby pushing the main top plate 412 to move. A docking plate 3104 is fixedly installed at the bottom end of the main bottom plate 411, serving as a physical target for position identification. A position sensor 3105 is installed on the mounting base 3101 to detect the position of the docking plate 3104. This sensor is used for non-contact detection of whether the docking plate 3104 has reached the predetermined position. It only serves as a trigger signal and does not participate in mechanical control, ensuring that the pushing action starts at the correct time.

[0049] A second electric actuator 3106 is horizontally fixed to the side of the mounting base 3101, providing auxiliary power. Pulling the pull ring 3107 controls the movement of the swing arm 3108, thereby driving the tactile switch 3110 for detection and confirmation. The pull ring 3107 is fixedly mounted on the telescopic end of the second electric actuator 3106, connecting the second electric actuator 3106 and the swing arm 3108, transmitting linear motion to the swing mechanism. The swing arm 3108 is hinged to the side of the mounting base 3101. The hinge position between the swing arm 3108 and the mounting base 3101 is located in the middle of the swing arm 3108. The bottom end of the swing arm 3108 is inserted inside the pull ring 3107, converting the pulling force of the second electric actuator 3106 into a pushing force at the top, used to drive the slide rod 3109 and the tactile switch 3110. The top end of the swing rod 3108 is horizontally slidably provided with a slide rod 3109, which transmits the force of the swing rod 3108 to the tactile switch 3110 and also serves as a guide shaft for the tactile switch 3110.

[0050] The end of the slide bar 3109 is fixedly equipped with a tactile switch 3110 that abuts against the side wall of the main base plate 411, serving as a physical contact detection element. Subsequent actions are only permitted after it actually contacts the side wall of the main base plate 411 (confirming correct positioning), providing a double safety mechanism. A third spring 3111 is fitted onto the slide bar 3109, with its two ends abutting against the tactile switch 3110 and the swing rod 3108, respectively. This provides buffering and restoring force, ensuring the tactile switch 3110 is flexible when contacting the side wall of the main base plate 411, preventing damage from rigid impacts, and automatically resetting after detection.

[0051] To achieve material receiving, see [link / reference] Figures 5-7 The receiving unit 32 includes a support base 321 connected to an external support body. A vertical displacement groove 322 is formed on the support base 321, and a displacement block 323 is slidably disposed inside the displacement groove 322, guiding the displacement block 323 to perform precise vertical linear movement. A fourth electric actuator 324 is vertically fixed on the support base 321, with its telescopic end fixedly disposed at the bottom end of the displacement block 323. Pushing the displacement block 323 up and down adjusts the height of the receiving unit 32, matching its height with the bottom plate 421 on the sub-conveyor line 2. A fifth electric actuator 325 is horizontally fixed on the side of the displacement block 323 facing the bottom plate 421, pushing the connecting plate 326 and the magnetic plate 327 to move, responsible for pulling or pushing the bottom plate 421 from the sub-conveyor line 2 directly below the main top plate 412, completing the lateral docking. The telescopic end of the fifth electric actuator 325 is fixedly provided with a connecting plate 326, which is a transition piece connecting the fifth electric actuator 325 and the magnetic plate 327 to transmit horizontal thrust.

[0052] The top of the connecting plate 326 is fixedly equipped with a magnetic plate 327 that is compatible with the bottom of the dividing plate 421, using magnetic force to attract the dividing plate 421. This is a non-rigid, flexible connection method, which facilitates fine-tuning of the position in the initial docking stage, avoiding damage to the equipment from hard collisions. At the same time, the retraction of the fifth electric push rod 325 drives the dividing plate 421 back to its original position. The fifth electric push rod 325 and the connecting plate 326 push the dividing plate 421 to move directly below the main top plate 412. A sixth electric push rod 328 is provided above the fifth electric push rod 325. The telescopic end of the sixth electric push rod 328 can abut against the middle turning part of the sliding frame 424, and the sixth electric push rod 328 pushes the sliding frame 424 to move. This pushes the sliding frame 424 to move, compresses the second spring 428 and squeezes the wedge block 430, and performs the "unlocking" action of the dividing assembly 42, allowing the dividing top plate 422 to receive the workpiece.

[0053] The method of using the paint separation device for co-line spraying of the present invention is as follows: First, the component is hung between the main top plate 412 and the main bottom plate 411 of the main line assembly 41, and moves with the main conveyor line 1 to the material changing station. When the docking plate 3104 at the bottom of the main bottom plate 411 passes the mounting base 3101, the position sensor 3105 detects a signal, initially confirming that the station has been reached. Subsequently, the second electric push rod 3106 is activated, pulling the swing rod 3108 through the pull ring 3107 to swing its upper end until the touch switch 3110 physically contacts the side wall of the main bottom plate 411. Only when the touch switch 3110 is triggered (confirming that the mechanical position is accurate) is the system allowed to proceed to the next step to prevent misoperation.

[0054] Once the workpiece is confirmed to be in position, the first electric actuator 3102 is activated, and its telescopic end passes through the top groove 3103 and abuts against the first push plate 413 on the main top plate 412. The electric actuator pushes the main top plate 412 to slide along the positioning rod 414, compressing the first spring 416. At this time, the relative position between the main top plate 412 and the main bottom plate 411 changes, the gap that originally clamped the workpiece is opened or shifted, and the workpiece is in a released state awaiting transfer, but is still temporarily supported by the main line assembly 41.

[0055] Simultaneously, the receiving unit 32 begins operation. The fourth electric actuator 324 drives the displacement block 323 to rise and fall within the displacement groove 322, adjusting it to the same height as the branch assembly 42 on the branch conveyor line 2. After the branch assembly 42 is precisely aligned, the sixth electric actuator 328 actuates, pressing against the middle turning part of the sliding frame 424 and pushing it to move. The sliding frame 424 slides along the limiting groove 425 and the positioning groove 427, and its side arm presses against the inclined surface of the wedge block 430 on the locking plate 429. This action forces the locking plate 429 to undergo elastic deformation, causing the locking block 431 to disengage from the locking groove 432 and releasing the locking of the bottom plate 421. Next, the fifth electric actuator 325 pushes the connecting plate 326 and the magnetic plate 327 to extend horizontally. The magnetic plate 327 uses magnetic force to attract the bottom plate 421, smoothly pulling it from the branch conveyor line 2 to directly below the main top plate 412. With the lock released, and in conjunction with the thrust or gravity of the main line, the workpiece is smoothly transferred from the main line assembly 41 to the gap in the branch line assembly 42. Subsequently, each electric push rod resets, and the sliding frame 424 returns to its original position under the action of the second spring 428, relocking the top plate 422. The branch conveyor line 2 then carries away the workpiece, completing the entire post-painting branch line process.

[0056] Unless otherwise defined, the technical or scientific terms used herein should be understood in their ordinary sense as would be understood by one of ordinary skill in the art to which this invention pertains. The use of terms such as "a" or "an" in this specification and claims does not necessarily indicate a limitation of quantity. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the element or object listed following the word and its equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect.

[0057] The exemplary embodiments of the present invention have been described in detail above with reference to preferred embodiments. However, those skilled in the art will understand that various modifications and alterations can be made to the above specific embodiments without departing from the concept of the present invention, and various combinations can be made to the various technical features and structures proposed in the present invention without exceeding the protection scope of the present invention.

Claims

1. A paint separation device for collinear spraying, characterized in that: It includes a main conveyor line (1), a sub-conveyor line (2), and a material changing module (3). Both the main conveyor line (1) and the sub-conveyor line (2) are equipped with multiple synchronously moving hanging modules (4). The hanging module (4) includes a main line assembly (41) set on the main conveyor line (1) and a branch line assembly (42) set on the branch conveyor line (2). The workpiece is hung on the corresponding main line assembly (41) and branch line assembly (42). The material changing module (3) includes a pushing unit (31) that cooperates with the main conveyor line (1) and a receiving unit (32) that cooperates with the sub-conveyor line (2).

2. The paint separation device for collinear spraying according to claim 1, characterized in that: The main line assembly (41) includes a main base plate (411) fixedly mounted on the main conveyor line (1), and the main base plate (411) has an L-shaped structure with the horizontal part located on the lower side; The main base plate (411) is provided with a main top plate (412) that can slide along the length of the horizontal part of the main base plate (411). The main top plate (412) is an L-shaped structure with the horizontal part located on the upper side. The vertical part of the main top plate (412) is arranged opposite to the vertical part of the main base plate (411). There is a gap between the horizontal portions of the main top plate (412) and the main bottom plate (411), and the workpiece is hung in the gap. A first push plate (413) is fixedly installed at the bottom end of the horizontal portion of the main top plate (412) facing away from its vertical portion. The bottom end of the first push plate (413) abuts against the top end of the horizontal portion of the main bottom plate (411).

3. The paint separation device for collinear spraying according to claim 2, characterized in that: At least one positioning rod (414) is horizontally fixedly provided on the vertical part of the main bottom plate (411). The end of the positioning rod (414) horizontally penetrates the horizontal part of the main top plate (412) and is slidably connected to the main top plate (412). The main top plate (412) has a horizontal through hole (415) adapted to the positioning rod (414) in its horizontal part. A first spring (416) is sleeved on the positioning rod (414) inside the through hole (415). The end diameter of the positioning rod (414) is larger than the outer diameter of the first spring (416). A detachable baffle (417) is provided at the top of the vertical part of the main top plate (412). The through hole (415) is blocked by the baffle (417). A fixing bolt (418) is rotatably provided on the baffle (417). The working end of the fixing bolt (418) passes through the baffle (417) and is threadedly connected to the main top plate (412).

4. The paint separation device for collinear spraying according to claim 2, characterized in that: The branching assembly (42) includes a branching base plate (421), which is an L-shaped structure with the horizontal part located on the lower side, and the vertical part of the branching base plate (421) is arranged opposite to the vertical part of the main top plate (412). The bottom plate (421) is provided with a top plate (422) that can slide along the length of the horizontal part of the bottom plate (421). The top plate (422) is fixedly installed on the conveyor line (2). The top plate (422) is an L-shaped structure with the horizontal part located on the upper side. The vertical part of the top plate (422) is opposite to the vertical part of the bottom plate (421). There is a gap between the horizontal portions of the top plate (422) and the bottom plate (421), and the workpiece is hung in the gap. A second push plate (423) is fixedly installed at the bottom end of the horizontal portion of the bottom plate (421) facing away from its vertical portion. The top end of the second push plate (423) abuts against the bottom end of the horizontal portion of the top plate (422).

5. The paint separation device for collinear spraying according to claim 4, characterized in that: A sliding frame (424) is horizontally slidably installed on the bottom side wall of the vertical part of the top plate (422) facing away from the bottom plate (421). The sliding frame (424) is a U-shaped structure with its opening facing the top plate (422). Limiting grooves (425) are provided on both arms of the sliding frame (424). Limiting plates (426) that can slide in the limiting grooves (425) are fixedly installed on both sides of the vertical part of the top plate (422). The vertical part of the top plate (422) is provided with horizontally opening positioning grooves (427) on both sides, which are adapted to the two arms of the sliding frame (424); A second spring (428) is horizontally fixed at the middle turning part of the sliding frame (424), and the other end of the second spring (428) is fixed at the vertical part of the top plate (422).

6. The paint separation device for collinear spraying according to claim 5, characterized in that: On both sides of the vertical part of the top plate (422), there are horizontally fixed snap-fit ​​plates (429), which are elastic elements and their ends face the bottom plate (421). A wedge block (430) is provided in the middle of the side of the snap plate (429) facing the top plate (422). The wedge block (430) is located inside the positioning groove (427). The side arm of the sliding frame (424) can abut against the inclined surface of the wedge block (430). A snap-fit ​​block (431) is fixedly provided on the side of the snap-fit ​​plate (429) facing the bottom plate (421). The snap-fit ​​block (431) is a right-angled triangular structure with an inclined surface that can abut against the end of the bottom plate (421). Snap-fit ​​grooves (432) that can be adapted to the corresponding snap-fit ​​blocks (431) are provided on both sides of the bottom plate (421).

7. The paint separation device for collinear spraying according to claim 2, characterized in that: The pushing unit (31) includes a mounting base (3101) connected to an external support body. A first electric push rod (3102) is horizontally fixed on the mounting base (3101). The telescopic end of the first electric push rod (3102) faces the main base plate (411). The top of the vertical part of the main base plate (411) is provided with a top groove (3103) for the telescopic end of the first electric push rod (3102) to pass through. The telescopic end of the first electric push rod (3102) can abut against the horizontal end of the main top plate (412). The main top plate (412) is moved by the first electric push rod (3102). A docking plate (3104) is fixedly installed at the bottom end of the main base plate (411), and a position sensor (3105) for detecting the position of the docking plate (3104) is installed on the mounting base (3101).

8. The paint separation device for collinear spraying according to claim 7, characterized in that: A second electric push rod (3106) is horizontally fixed on the side of the mounting base (3101), and a pull ring (3107) is fixedly provided on the telescopic end of the second electric push rod (3106). A swing rod (3108) is hinged to the side of the mounting base (3101). The hinge position of the swing rod (3108) and the mounting base (3101) is located in the middle of the swing rod (3108). The bottom end of the swing rod (3108) is inserted into the pull ring (3107). A slide rod (3109) is horizontally slidably provided at the top end of the swing rod (3108). A tactile switch (3110) that can abut against the side wall of the main base plate (411) is fixedly provided at the end of the slide rod (3109). A third spring (3111) is sleeved on the slide rod (3109). The two ends of the third spring (3111) abut against the tactile switch (3110) and the swing rod (3108) respectively.

9. The paint separation device for collinear spraying according to claim 5, characterized in that: The receiving unit (32) includes a support base (321) connected to an external support body. A displacement groove (322) is vertically provided on the support base (321). A displacement block (323) is slidably arranged inside the displacement groove (322). A fourth electric push rod (324) is vertically fixed on the support base (321). The telescopic end of the fourth electric push rod (324) is fixedly arranged at the bottom end of the displacement block (323).

10. The paint separation device for collinear spraying according to claim 9, characterized in that: The displacement block (323) is horizontally fixed with a fifth electric push rod (325) on the side facing the bottom plate (421). The telescopic end of the fifth electric push rod (325) is fixed with a connecting plate (326). The top of the connecting plate (326) is fixed with a magnetic plate (327) that can be adapted to the bottom end of the bottom plate (421). The bottom plate (421) is pushed to move directly below the main top plate (412) by the fifth electric push rod (325) and the connecting plate (326). The upper part of the fifth electric push rod (325) is provided with a sixth electric push rod (328). The telescopic end of the sixth electric push rod (328) can abut against the middle turning part of the sliding frame (424), and the sliding frame (424) is moved by the sixth electric push rod (328).

Images