A paint spraying suspension conveyor buffer

Abstract

The application provides a paint spraying suspension conveying buffer device, and relates to the field of conveying equipment, which comprises a suspension conveying frame, a buffer frame and a hanging basket assembly; the suspension conveying frame comprises a main conveying frame, the buffer frame comprises a buffer conveying frame, a first shunt frame and a second shunt frame are arranged between the main conveying frame and the buffer frame, the first shunt frame and the second shunt frame are arranged in a herringbone shape, the first shunt frame is used for guiding the hanging basket assembly to enter the buffer frame from the main conveying frame, and the second shunt frame is used for guiding the hanging basket assembly to return to the main conveying frame from the buffer frame; the hanging basket assembly comprises a hanging basket body, a hanging arm and a hanging seat module, one end of the hanging arm is connected with the hanging basket body, and the other end is rotationally connected with the hanging seat module through a vertical rotating shaft; through the arrangement of the buffer frame and the herringbone-shaped track, the hanging basket assembly can be stored in or output from the buffer frame according to the paint spraying rhythm, and the rhythm requirements of different paint spraying processes can be met.

Description

Technical Field

[0001] This invention relates to the field of conveying equipment, and more specifically, to a buffer device for a paint spraying suspension conveyor. Background Technology

[0002] In painting production lines, overhead conveyor systems are a common method for transporting workpieces. These systems use suspended baskets or lifting devices to carry workpieces along a conveyor track, facilitating the transfer of workpieces between different painting stations. Painting processes typically have a fixed cycle time. Different workpieces, due to variations in shape, size, and coating requirements, require different painting cycle times. Especially in multi-layer painting processes, sufficient drying is necessary between each coat of paint, which places high demands on the conveyor system's cycle time control and workpiece storage capacity.

[0003] Currently, most existing overhead conveyor systems use continuous circulating conveying with a relatively fixed conveying speed, making it difficult to flexibly adjust to changes in the painting cycle. When the conveying speed does not match the painting cycle, workpieces may experience excessively long waiting times or be insufficiently dried before entering the next process, leading to decreased production efficiency and even affecting paint quality. Furthermore, when it is necessary to inspect the paint quality of painted workpieces or perform localized touch-up painting, existing systems lack effective buffering mechanisms, making it impossible to temporarily store, inspect, and process workpieces without interrupting the main conveyor line, thus limiting the adaptability and flexibility of the production line. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a buffer device for paint spraying and conveying, so as to adapt to the painting cycle, increase the buffer capacity, and reduce paint damage caused by the rotation of the basket during the buffering process.

[0005] This invention provides a buffer device for overhead conveying of paint sprayers, comprising a suspended conveyor frame, a buffer frame, and a basket assembly. The suspended conveyor frame includes a main conveyor frame, and the buffer frame includes a buffer conveyor frame. A first diverter frame and a second diverter frame are provided between the main conveyor frame and the buffer frame, arranged in a herringbone pattern. The first diverter frame guides the basket assembly from the main conveyor frame into the buffer frame, and the second diverter frame guides the basket assembly from the buffer frame back to the main conveyor frame. The basket assembly includes a basket body, a boom, and a base module. One end of the boom is connected to the basket body, and the other end is rotatably connected to the base module via a vertical pivot. The basket assembly is provided with an angle fixing module. At least one of the first diverter frame, the second diverter frame, and the buffer conveyor frame is provided with a pressure plate. The pressure plate is used to lock the rotation of the basket body around the vertical pivot by the angle fixing module when the basket assembly passes by.

[0006] According to one embodiment of the present invention, the angle fixing module includes a rotating rod, a first spline head, a second spline head, a movable plate, a spring, and a hollow guide post; the rotating rod forms a vertical rotating shaft, the first spline head is fixed to the top of the rotating rod, the second spline head is fixed to the lower end face of the movable plate, the movable plate slides with the hollow guide post through a guide rod, the spring is sleeved on the guide rod, and when the pressure plate presses down on the movable plate, the second spline head engages with the first spline head to lock the rotation.

[0007] According to one embodiment of the present invention, a support plate is welded and fixed to one side of the first diversion frame, and a first pressure plate is fixed to the bottom of the support plate by bolts. The first pressure plate is horizontally fixed to the bottom of the first diversion frame. A second pressure plate is provided on one side of the second diversion frame. Welding plates are provided on both sides of the buffer conveyor frame, and a third pressure plate is fixed to the bottom of the welding plate by bolts. The heights of the first pressure plate, the second pressure plate and the third pressure plate are all adjustable, and their lengths respectively cover the corresponding paths.

[0008] According to one embodiment of the present invention, two hanging plates are rotatably connected to the support seat of the hanging base module. The hanging plates are symmetrically arranged about the rotating rod and have a T-shaped structure. Rollers adapted to the track are installed on the two protruding parts at the top of the hanging plates. Insertion parts are provided on both sides of the top of the hanging plates. A conveyor chain is provided inside the main conveyor frame. The conveyor chain includes two parallel chain bodies arranged at the top and bottom. Chain plates are evenly arranged between the two chain bodies. A pair of mutually cooperating elastic telescopic blocks are installed on each chain plate. Two positioning blocks are connected to the upper and lower ends of the elastic telescopic blocks on the chain plate.

[0009] According to one embodiment of the present invention, the plug-in portion is disposed between two rollers, one end of the plug-in portion is provided as a cylindrical lock head, the plug-in portions on both sides and the hanging plate form a cross-shaped structure in the horizontal plane, the telescopic portions of the elastic telescopic block are arranged facing each other and the two telescopic portions form a spring buckle structure for matching with the lock head at one end of the plug-in portion.

[0010] According to one embodiment of the present invention, the plug-in portion includes a first plug-in plate and a second plug-in plate, the conveyor chain is offset within the main conveyor frame, the first plug-in plate is used to engage with the spring buckle; a docking assembly is provided on the side wall of the main conveyor frame, the docking assembly is used to clamp the second plug-in plate and push the first plug-in plate into the spring buckle.

[0011] According to one embodiment of the present invention, the docking assembly includes a fixed mounting base, a linear cylinder, a pneumatic chuck, a control module, a first sensor, and a second sensor; the first sensor is used to detect the position of the positioning block on the chain plate, the second sensor is used to detect the position of the second plug-in plate, and the control module controls the linear cylinder to operate according to the signals from the first sensor and the second sensor, so that the pneumatic chuck clamps the second plug-in plate and inserts the first plug-in plate into the spring buckle.

[0012] According to one embodiment of the present invention, a first reversing plate is provided at the connection between the main conveyor frame and the first diverter frame, and a second reversing plate is provided at the connection between the first diverter frame and the second diverter frame. The first reversing plate and the second reversing plate are used to switch the running channel of the suspended basket assembly.

[0013] According to one embodiment of the present invention, the buffer rack is mounted on a support assembly, the support assembly is slidably fitted on a slide rail assembly and driven to move by a drive assembly, so as to switch different buffer conveyor racks aligned with one end of the first or second diverter rack.

[0014] According to one embodiment of the present invention, the basket body deflects by 20° to 45° when entering the first diversion rack, so as to reduce the spacing between adjacent buffer conveyor racks.

[0015] In summary, this application includes at least one of the following beneficial technical effects: 1. In this invention, by setting up a buffer rack and a herringbone track, the basket assembly can store or output buffer racks according to the painting cycle, adapting to the cycle requirements of different painting processes. While waiting for the paint to dry, paint surface inspection can be performed, facilitating timely paint touch-up or workpiece quality assessment, thus improving the adaptability and flexibility of the production line.

[0016] 2. In this invention, by setting up multiple sets of buffer conveyor frames and movable support base components, different buffer conveyor frames can be switched to align with the herringbone track, thereby increasing the buffer capacity of the buffer frames. At the same time, the basket assembly can also choose not to enter the buffer frames and directly enter the next work station along the main conveyor frame, thereby improving the system's adaptability to different working conditions.

[0017] 3. In this invention, by setting an angle fixing module on the basket assembly, the posture of the basket body is fixed after the basket assembly enters the buffer rack, avoiding the problem of paint damage caused by collisions between adjacent basket assemblies in the buffer rack due to free rotation. At the same time, by deflecting the basket body at a certain angle into the buffer rack, the distance between the buffer conveyor racks can be reduced, increasing the number of buffers in the same space. Attached Figure Description

[0018] Figure 1 This is an overall structural diagram of a buffer device for paint spraying and conveying according to the present invention; Figure 2 This is an assembly structure diagram of the cache rack and support base assembly of the present invention; Figure 3 for Figure 2 Enlarged structural diagram at point A in the middle; Figure 4 This is a schematic diagram of the herringbone track and reversing plate of the present invention; Figure 5 This is a schematic diagram of the overall structure of the suspended platform assembly of the present invention; Figure 6 for Figure 5 Enlarged structural diagram at point B; Figure 7 This is a structural diagram of the suspended basket assembly of the present invention located on the first diversion frame; Figure 8 This is a schematic diagram of the assembly structure of the hanging bracket module and the angle fixing module of the present invention; Figure 9 for Figure 8 Enlarged structural diagram at point C; Figure 10 This is a structural diagram showing the connection between the boom and the rotating rod in the suspended platform assembly of the present invention; Figure 11 This is an installation structure diagram of the docking assembly and the main conveyor frame of the present invention; Figure 12 for Figure 11 Enlarged structural diagram at point D; Figure 13 This is a structural diagram of the cache rack in this invention; Figure 14 This is a structural diagram of the cache rack from another perspective in this invention; Figure 15 for Figure 14 Enlarged structural diagram at point E in the middle.

[0019] Figure label: 1. Suspended conveyor frame; 101. Main conveyor frame; 102. First diverter frame; 103. Second diverter frame; 104. First reversing plate; 105. Second reversing plate; 106. First pressure plate; 107. Second pressure plate; 108. Docking assembly; 1081. Fixed mounting base; 1082. Linear cylinder; 1083. Pneumatic chuck; 1084. Control module; 1085. First sensor; 1086. Second sensor; 2. Suspended platform assembly; 201. Suspended platform body; 202. Boom; 2021. Slot; 203. Suspension base module; 2031. Bearing seat; 2032. Rotating rod; 2033. Suspension plate; 2034. Plug-in part; 20341. First plug-in plate; 20342. Second plug-in plate; 204. Angle fixing module; 2041. Hollow guide column; 2042. Moving plate; 2043. First spline head; 2044. Spring; 2045. Second spline head; 3. Support base assembly; 4. Buffer rack; 401. Rack top support; 402. Buffer conveyor rack; 403. Welding plate; 404. Third pressure plate; 5. Slide rail assembly; 6. Conveyor chain; 601. Chain body; 602. Chain plate; 603. Elastic telescopic block; 604. Positioning block. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Example 1: This example provides a buffer device for a paint spraying suspension conveyor, referring to... Figure 1 The buffer device includes a buffer frame 4 and a suspended conveyor frame 1 corresponding to the buffer frame 4. The suspended conveyor frame 1 is a ring structure. Multiple basket assemblies 2 for placing workpieces are suspended on the suspended conveyor frame 1. A herringbone track is provided between the suspended conveyor frame 1 and the buffer frame 4. The herringbone track is composed of a first diverter frame 102 and a second diverter frame 103. The first diverter frame 102 is used to allow the basket assemblies 2 on the suspended conveyor frame 1 to enter the buffer frame 4, and the second diverter frame 103 is used to allow the basket assemblies 2 in the buffer frame 4 to return to the suspended conveyor frame 1.

[0022] Furthermore, the buffer rack 4 is used to adapt to the painting cycle. It can adjust or adapt to the painting cycle by storing or outputting a certain number of hanging basket components 2. When a workpiece requires multiple painting processes, the buffer rack 4 is set up so that the workpiece stored in the buffer rack 4 and placed on the hanging basket component 2 can be inspected for paint while waiting for the paint to dry, which is convenient for timely touch-up painting or defect handling.

[0023] To buffer more basket components 2 in the buffer rack 4, the track between the suspended conveyor frame 1 and the buffer rack 4 is configured to be able to engage or disengage, as shown in the reference. Figure 2 and Figure 13 Multiple buffer conveyor frames 402 are installed on the top support 401 of the buffer frame 4. The buffer frame 4 is installed on the upper surface of the support base assembly 3. The bottom of the support base assembly 3 is connected to the slide rail of the slide rail assembly 5 via a slider. The support base assembly 3 is also equipped with a drive component for moving the support base assembly 3 along the slide rail assembly 5. When the support base assembly 3 is displaced, different buffer conveyor frames 402 can be switched to align with one end of the herringbone track, so that the current buffer conveyor frame 402 can be used to buffer the suspended conveyor frame 1. In addition, the suspended basket assembly 2 can also enter the buffer frame 4 on the main conveyor frame 101 without going through the herringbone track, but can directly enter the next station under the conveying of the main conveyor frame 101.

[0024] Reference Figure 4A first reversing plate 104 is provided at the connection between the main conveyor frame 101 and the first diversion frame 102, and a second reversing plate 105 is provided at the connection between the first diversion frame 102 and the second diversion frame 103. The first reversing plate 104 is used to switch the basket assembly 2 from the main conveyor frame 101 into the first diversion frame 102 or to continue running along the main conveyor frame 101. The second reversing plate 105 is used to switch the basket assembly 2 from the first diversion frame 102 into the buffer frame 4 or from the buffer frame 4 into the second diversion frame 103. Specifically, the first reversing plate 104 and the second reversing plate 105 are both installed at the track bifurcation through a rotating shaft. The channel switching is achieved by the cylinder pushing the plate to swing around the rotating shaft. The end of the reversing plate is provided with a guide surface that matches the track cross section, so that the rollers of the basket assembly 2 can smoothly transition without jamming.

[0025] Furthermore, referring to Figure 5 , Figure 6 and Figure 7 The suspended platform assembly 2 includes a suspended platform body 201. A boom 202 is provided on one side of the suspended platform body 201. The boom 202 has an L-shaped structure. The vertical end face of the boom 202 is welded and fixed to the side of the suspended platform body 201. The horizontal support arm of the boom 202 is slidably mounted on the conveyor frame via a mounting module 203. (The rest of the text is a continuation of the previous paragraph and can be omitted.) Figure 8 A rotating rod 2032 is mounted on the bearing seat 2031 of the hanging module 203 via a bearing seat. The rotating rod 2032 is vertically positioned. (Refer to...) Figure 10 The boom 202 has a slot 2021 at one end of its horizontal support arm. The slot 2021 is located at the center of gravity of the suspended platform body 201 and the boom 202 as a whole. The bottom of the rotating rod 2032 has notches on both sides to allow it to be inserted into the slot 2021 and fastened with bolts. When the slot 2021 is connected to the bottom of the rotating rod 2032, the rotating rod 2032 and the suspended platform body 201 are relatively fixed, meaning that the rotation of the rotating rod 2032 can cause the suspended platform body 201 to deflect as a whole.

[0026] In this embodiment, a conveyor chain 6 is provided inside the main conveyor frame 101. The hanging bracket module 203 can be connected to or separated from the conveyor chain 6, which facilitates the separation of the hanging basket assembly 2 on the suspended conveyor frame 1 from the conveyor chain 6 and its entry into the buffer frame 4 for buffering. Specifically, refer to... Figure 6The conveyor chain 6 includes two parallel chain bodies 601, with chain plates 602 evenly distributed between them. Each chain plate 602 has a pair of cooperating elastic telescopic blocks 603. Two positioning blocks 604 are provided at the upper and lower ends of each elastic telescopic block 603 on the chain plate 602. The telescopic portions of the elastic telescopic blocks 603 face each other, forming a spring-loaded latch structure adapted to fit the locking head at one end of the insertion part 2034. Each elastic telescopic block 603 includes a housing fixed to the chain plate 602, with a compression spring inside. One end of the telescopic portion extends out of the housing, and the other end abuts against the spring. The two telescopic portions, facing each other, form an openable and closing jaw. When the locking head is inserted, the telescopic portion is pushed open, and the spring force causes the telescopic portion to return to its original position and clamp the locking head.

[0027] Reference Figure 8 and Figure 10 Two hanging plates 2033 are rotatably connected to the support base 2031. Rollers adapted to the track are installed at the top of the hanging plates 2033. The hanging plates 2033 are symmetrically arranged about the rotating rod 2032 and have a T-shaped structure. Rollers adapted to the track are installed on the two protruding parts at the top of the hanging plates 2033. Insertion parts 2034 are provided on both sides of the top of the hanging plates 2033. The insertion parts 2034 are located between the two rollers. One end of the insertion part 2034 is provided as a cylindrical lock head. The lock heads of the two insertion parts 2034 and the hanging plates 2033 form a cross-shaped structure in the horizontal plane. At the same time, the telescopic parts of the elastic telescopic block 603 are arranged facing each other, and the two telescopic parts form a spring buckle structure adapted to the lock head at one end of the insertion part 2034.

[0028] Reference Figure 11 and Figure 12 The conveyor chain 6 is positioned off-center within the main conveyor frame 101. The insertion portion 2034 on the hanging plate 2033 near the side of the conveyor chain 6 is the first insertion plate 20341, and the other side is the second insertion plate 20342. When the suspended basket assembly 2 returns from the second diversion frame 103 to the main conveyor frame 101, the intersection of the second diversion frame 103 and the main conveyor frame 101 is the engagement station for the hanging base module 203 and the conveyor chain 6. A docking assembly 108 is provided at this engagement station.

[0029] exist Figure 11In the process, the fixed mounting base 1081 of the docking component 108 is installed on the side wall of the main conveyor frame 101, and the fixed mounting base 1081 is installed on the side away from the internal conveyor chain 6 of the main conveyor frame 101. A linear cylinder 1082 is installed on the fixed mounting base 1081, and a pneumatic chuck 1083 is provided in the fixed mounting base 1081. The telescopic end of the linear cylinder 1082 is connected to one end of the pneumatic chuck 1083. Activating the linear cylinder 1082 can drive the pneumatic chuck 1083 to move in the fixed mounting base 1081 along the conveying direction perpendicular to the main conveyor frame 101. The clamping end of the pneumatic chuck 1083 is configured to be adapted to the locking head at one end of the second plug-in plate 20342.

[0030] In this embodiment, the docking component 108 is provided to solve the problem that the hanging platform module 203 and the moving conveyor chain 6 are difficult to automatically, accurately, and reliably engage when the basket assembly returns from the buffer rack to the main conveyor rack. The root causes of this problem include the following aspects: First, the conveyor chain is in continuous motion, and the position of the spring buckle is constantly changing. The conveyor chain 6 runs continuously within the main conveyor frame 101, and the spring buckle on the chain plate 602 moves continuously with the chain; however, when the basket assembly slides from the second diversion frame 103, its speed is mainly determined by the track slope, its own sliding, or manual pushing, making it difficult to perfectly synchronize with the speed of the conveyor chain. As a result, there is a significant speed difference between the locking head of the insertion part and the spring buckle, making it difficult for the two to align naturally during movement.

[0031] Secondly, the suspended platform assembly lacks power at the track intersection and cannot automatically complete the insertion. When the suspended platform assembly enters the main conveyor frame 101 from the second diversion frame 103, the track direction changes, and the hanging base module 203 needs to move laterally and adjust its position at the intersection; however, at this time, the suspended platform assembly has already detached from the conveyor chain 6, and relying solely on track guidance and its own weight, it cannot overcome the clamping force of the spring buckle, nor can it offset the frictional resistance. The locking head of the first insertion plate 20341 is not easy to actively insert into the spring buckle, and it is prone to stopping at the intersection or getting stuck at an angle.

[0032] Third, the position of the buffer rack after switching and the basket after parking will deviate. The buffer rack 4 moves along the slide rail assembly 5 via the support base assembly 3, switching between different buffer conveyor racks 402 and aligning with the second diverter rack 103; there may be slight deviations in the docking positions of different buffer conveyor racks and the second diverter rack 103. Moreover, after the basket assembly is parked in the buffer rack for a period of time and then restarted, the cooperation state between the rollers and the rail, the deflection angle of the basket body 201, etc., may also change, causing the actual position of the second plug plate 20342 to be inconsistent with the theoretical position when entering the engagement station, further increasing the alignment difficulty.

[0033] Therefore, after setting up the docking assembly 108, the positions of the chain plate positioning block 604 and the hanging seat module can be detected by the first sensor 1085 and the second sensor 1086 respectively. The control module 1084 controls the linear cylinder 1082 to drive the pneumatic chuck 1083 to clamp the second plug-in plate 20342 and apply a lateral thrust, forcing the locking head and spring buckle of the first plug-in plate 20341 to be in the correct position to complete the insertion. This process directly eliminates the speed difference and position deviation between the hanging basket assembly and the conveyor chain, enabling the hanging basket assembly to automatically, accurately, and reliably reconnect to the conveyor chain 6, avoiding situations where it cannot be inserted, gets stuck, or even detaches. This ensures a stable conveying rhythm and reduces paint damage caused by collisions or friction.

[0034] Reference Figure 3 The upper surface of the main conveyor frame 101 is equipped with a first sensor 1085 and a second sensor 1086, both of which are photoelectric sensors. The first sensor 1085 has two receiving ends, corresponding to two positioning blocks 604 on the chain plate 602 respectively; the second sensor 1086 has one receiving end, corresponding to the top of the locking head on the second plug-in plate 20342. During the engagement of the hanging module 203 with the conveyor chain 6, the first sensor 1085 is used to determine the position of the spring buckle on the chain plate 602, and the second sensor 1086 is used to determine the position of the locking head on the second plug-in plate 20342, thereby indirectly determining the position of the locking head on the first plug-in plate 20341. When the first sensor 1085 and the second sensor 1086 detect a corresponding position, the control module 1084 controls the linear cylinder 1082 to operate, causing the pneumatic chuck 1083 to clamp the locking head of the second plug-in plate 20342, pushing the entire hanging module 203 to move towards the conveyor chain 6, inserting the locking head of the first plug-in plate 20341 into the spring buckle on the corresponding chain plate 602, thus completing the connection between the hanging module 203 and the conveyor chain 6.

[0035] In this embodiment, the control module 1084 is a microcontroller or PLC. It receives signals from the first sensor 1085 and the second sensor 1086. When both sensors detect the corresponding position at the same time, the control module 1084 controls the solenoid valve of the linear cylinder 1082 to automatically engage the locking head of the first plug plate 20341 with the spring buckle on the corresponding chain plate 602.

[0036] Furthermore, the second diversion frame 103 is positioned near the joining station, and the suspended basket assembly 2 is manually or by a ground trolley pulled to a predetermined position for the joining assembly 108 to perform the joining operation. When the suspended basket assembly 2 reaches the joining station, the operator or ground trolley pushes it to the predetermined joining position, so that the locking head of the second plug plate 20342 is within the clamping range of the pneumatic chuck 1083, and the rollers of the hanging base module 203 remain within the track of the second diversion frame 103. Subsequently, the second sensor 1086 detects the position of the second plug plate 20342, and the first sensor 1085 detects the position of the positioning block 604 on the chain plate 602. Once the two sensors correspond, the joining assembly 108 completes the joining operation.

[0037] In the second embodiment, the rotating rod 2032 is mounted on the bearing seat 2031 via a bearing seat so that the entire boom 202 can rotate during the painting process, ensuring even painting. However, when the basket assembly 2 enters the buffer rack 4 from the suspended conveyor frame 1, the basket assembly 2 in the buffer rack 4 has painted workpieces on it. The free rotation of the basket assembly 2 in the buffer rack 4 may cause collisions, potentially damaging the paint on the workpieces.

[0038] To address this issue, in this embodiment, reference is made to... Figure 5 and Figure 8 An angle fixing module 204 is provided in the hanging bracket module 203. (Refer to...) Figure 9 The first spline head 2043 of the angle fixing module 204 is fixed to the top of the rotating rod 2032. Four hollow guide pillars 2041 are fixed on the bearing seat of the bearing seat 2031. A guide rod that slides and adapts to the inner cavity of the hollow guide pillars 2041 is connected to the moving plate 2042. A second spline head 2045, corresponding to the first spline head 2043, is fixed to the lower end face of the movable plate 2042. The first spline head 2043 has a spline hole, and the second spline head 2045 has a spline shaft. A spring 2044 is sleeved on the guide rod between the hollow guide post 2041 and the movable plate 2042. When the movable plate 2042 is pressed down, the spline shaft of the second spline head 2045 is inserted into the spline hole of the first spline head 2043, and the rotating rod 2032 is fixed in the direction of rotation, thereby fixing the posture of the suspended basket body 201. The stiffness of the spring 2044 should be sufficient to support the movable plate 2042 to remain in the upper position when there is no external force, so that the second spline head 2045 is separated from the first spline head 2043. At this time, the suspended basket can rotate freely. When pressed down by the pressure plate, the movable plate 2042 moves down against the spring force, and the spline engages to achieve locking.

[0039] Furthermore, a support plate is welded and fixed to one side of the first diversion frame 102, and a first pressure plate 106 is fixed below the support plate by multiple sets of bolts. The first pressure plate 106 is horizontally fixed below the first diversion frame 102. When the basket assembly 2 enters the first diversion frame 102, the first pressure plate 106 abuts against the moving plate 2042 on the basket assembly 2. By adjusting the height of the first pressure plate 106 with bolts, the moving plate 2042 can be pressed down during the movement of the basket assembly 2, thereby fixing the posture of the basket body 201. The length of the first pressure plate 106 covers the entire movement path of the basket assembly 2 on the first diversion frame 102, ensuring that the basket remains in a fixed posture before entering the buffer rack 4, thereby preventing the basket body 201 from rotating freely.

[0040] A second pressure plate 107 is also provided on one side of the second diversion rack 103. The second pressure plate 107 cooperates with the moving plate 2042 to press down the moving plate 2042 during the process of the basket assembly 2 returning from the buffer rack 4 to the main conveyor rack 101, so as to maintain the posture of the basket body 201. The length of the second pressure plate 107 covers the entire movement path of the basket assembly 2 on the second diversion rack 103 until it reaches the engagement station.

[0041] like Figures 13 to 15 As shown, multiple sets of buffer conveyor frames 402 are fixed in parallel on the top support 401 of the buffer frame 4. Each set of buffer conveyor frames 402 has a welding plate 403 on both sides. A third pressure plate 404 is fixedly connected to the bottom of the welding plate 403 by bolts. When the basket assembly 2 enters the corresponding buffer conveyor frame 402 from the first diversion frame 102, the height of the third pressure plate 404 can be adjusted by bolts so that the moving plate 2042 is pressed down during the movement of the basket assembly 2, thereby fixing the posture of the basket body 201. The length of the third pressure plate 404 covers the entire storage path of the basket assembly 2 on the buffer conveyor frame 402, ensuring that the basket maintains a fixed posture during buffering.

[0042] The ends of the buffer conveyor 402 and the ends of the first diversion frame 102 and the second diversion frame 103 are provided with mutually cooperating guide slopes or positioning pin holes, so that a smooth transition is formed after alignment, and the rollers of the basket assembly 2 are prevented from jumping or getting stuck when passing through the docking point.

[0043] Example 3 provides a buffer device for paint spraying suspension conveying. Based on Example 2, by adjusting the posture of the basket body 201, each basket body 201 deflects by 20° to 45° when entering the first diverter frame 102. Specifically, when the basket assembly 2 enters the first diverter frame 102 from the main conveyor frame 101 and separates from the conveyor chain 6, the direction and guiding effect of the first diverter frame 102 cause the basket body 201 to deflect; subsequently, the first pressure plate 106 presses down the moving plate 2042, causing the second spline head 2045 to engage with the first spline head 2043, locking the rotation of the rotating rod 2032, thereby fixing the basket body 201 in a posture deflected by 20° to 45°. This posture is maintained by the third pressure plate 404 when subsequently entering the buffer conveyor frame 402, thereby reducing the distance between adjacent buffer conveyor frames 402 and increasing the buffer capacity within the same space.

[0044] By maintaining this deflection orientation, the distance between adjacent buffer conveyor frames 402 can be reduced, thereby increasing the number of buffer conveyor frames 402 within the same space and improving buffer capacity. Specifically, when the basket body 201 deflects at a certain angle, its projected width along the length of the buffer conveyor frame 402 decreases, thus the distance between adjacent buffer conveyor frames 402 can be reduced accordingly. The deflection angle can be adjusted according to the workpiece size and basket size, typically around 30°, which effectively reduces the distance without affecting the safe distance between workpieces.

[0045] The specific working steps of this invention are as follows: The basket assembly 2, which carries the workpiece, runs along the main conveyor frame 101 with the conveyor chain 6. When buffering is required, the first reversing plate 104 is activated to guide the basket assembly 2 from the main conveyor frame 101 into the first diversion frame 102. At this time, the lock of the first plug plate 20341 is disengaged from the spring buckle of the elastic telescopic block 603, and the basket assembly 2 is separated from the conveyor chain 6.

[0046] Then, the first pressure plate 106 presses down the moving plate 2042 to fix the posture of the basket body 201; then the second reversing plate 105 moves, and the basket assembly 2 enters the buffer conveyor 402 of the buffer rack 4, and is held in a deflected posture by the third pressure plate 404; when it is necessary to return to the main conveyor 101, the support base assembly 3 drives the buffer rack 4 to move as a whole, so that the target buffer conveyor 402 is aligned with the second diversion rack 103. After the second reversing plate 105 moves, the basket assembly 2 enters the second diversion rack 103, and is held in a posture by the second pressure plate 107.

[0047] Upon reaching the joining station, the stop mechanism controls the suspended basket assembly 2 to stop moving. The first sensor 1085 and the second sensor 1086 respectively detect the positions of the positioning block 604 and the second insertion plate 20342 on the chain plate 602. After the position signals are matched, the control module 1084 controls the docking assembly 108 to move. The pneumatic chuck 1083 clamps the second insertion plate 20342, pushing the hanging base module 203 to move towards the conveyor chain 6, so that the first insertion plate 20341 is inserted into the spring buckle of the elastic telescopic block 603, completing the joining. Then the suspended basket assembly 2 moves to the next station along the main conveyor frame 101.

[0048] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0049] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

Claims

1. A buffer device for suspended conveying of paint spraying, characterized in that, Includes a suspended conveyor (1), a buffer rack (4), and a basket assembly (2); The suspended conveyor frame (1) includes a main conveyor frame (101), and the buffer frame (4) includes a buffer conveyor frame (402). A first diversion frame (102) and a second diversion frame (103) are provided between the main conveyor frame (101) and the buffer frame (4). The first diversion frame (102) and the second diversion frame (103) are arranged in a herringbone shape. The first diversion frame (102) is used to guide the suspended basket assembly (2) from the main conveyor frame (101) into the buffer frame (4), and the second diversion frame (103) is used to guide the suspended basket assembly (2) from the buffer frame (4) back to the main conveyor frame (101). The suspended platform assembly (2) includes a suspended platform body (201), a boom (202) and a base module (203). One end of the boom (202) is connected to the suspended platform body (201), and the other end is rotatably connected to the base module (203) through a vertical pivot. The suspended basket assembly (2) is provided with an angle fixing module (204), and at least one of the first diversion frame (102), the second diversion frame (103) and the buffer conveyor frame (402) is provided with a pressure plate. The pressure plate is used to lock the angle fixing module (204) to prevent the suspended basket body (201) from rotating around the vertical axis when the suspended basket assembly (2) passes by.

2. The buffer device for paint spraying and conveying according to claim 1, characterized in that, The angle fixing module (204) includes a rotating rod (2032), a first spline head (2043), a second spline head (2045), a moving plate (2042), a spring (2044), and a hollow guide post (2041). The rotating rod (2032) forms a vertical rotating shaft. The first spline head (2043) is fixed to the top of the rotating rod (2032), and the second spline head (2045) is fixed to the lower end face of the moving plate (2042). The moving plate (2042) slides with the hollow guide post (2041) through the guide rod. The spring (2044) is sleeved on the guide rod. When the pressure plate presses down on the moving plate (2042), the second spline head (2045) and the first spline head (2043) are inserted to lock the rotation.

3. A buffer device for paint spraying and conveying suspension according to claim 2, characterized in that, A support plate is welded and fixed to one side of the first diversion frame (102), and a first pressure plate (106) is fixed to the bottom of the support plate by bolts. The first pressure plate (106) is horizontally fixed to the bottom of the first diversion frame (102). A second pressure plate (107) is provided on one side of the second diversion frame (103). Welding plates (403) are provided on both sides of the buffer conveyor frame (402), and a third pressure plate (404) is fixed to the bottom of the welding plate (403) by bolts. The heights of the first pressure plate (106), the second pressure plate (107) and the third pressure plate (404) are all adjustable, and their lengths cover the corresponding paths respectively.

4. A buffer device for paint spraying and conveying suspension according to claim 1, characterized in that, The support base (2031) of the hanging module (203) has two hanging plates (2033) rotatably connected. The hanging plates (2033) are symmetrically arranged about the rotating rod (2032). The hanging plates (2033) have a T-shaped structure. Rollers adapted to the track are installed on the two protruding parts at the top of the hanging plates (2033). Insertion parts (2034) are provided on both sides of the top of the hanging plates (2033). The main conveyor frame (101) is equipped with a conveyor chain (6). The conveyor chain (6) includes two parallel chain bodies (601) arranged above and below. Chain plates (602) are evenly arranged between the two chain bodies (601). Each chain plate (602) is equipped with a pair of mutually cooperating elastic telescopic blocks (603). The upper and lower ends of the elastic telescopic blocks (603) are connected to two positioning blocks (604) on the chain plate (602).

5. A buffer device for paint spraying and conveying suspension according to claim 4, characterized in that, The plug-in part (2034) is located between the two rollers. One end of the plug-in part (2034) is set as a cylindrical lock head. The plug-in parts (2034) on both sides and the hanging plate (2033) form a cross-shaped structure on the horizontal plane. The telescopic parts of the elastic telescopic block (603) are arranged facing each other and the two telescopic parts form a spring buckle structure for matching the lock head at one end of the plug-in part (2034).

6. A buffer device for paint spraying and conveying according to claim 5, characterized in that, The plug-in part (2034) includes a first plug-in plate (20341) and a second plug-in plate (20342). The conveyor chain (6) is offset within the main conveyor frame (101). The first plug-in plate (20341) is used to engage with the spring buckle. The main conveyor (101) has a docking assembly (108) on its side wall. The docking assembly (108) is used to clamp the second plug plate (20342) and push the first plug plate (20341) into the spring buckle.

7. A buffer device for paint spraying and conveying according to claim 6, characterized in that, The docking assembly (108) includes a fixed mounting base (1081), a linear cylinder (1082), a pneumatic chuck (1083), a control module (1084), a first sensor (1085), and a second sensor (1086). The first sensor (1085) is used to detect the position of the positioning block (604) on the chain plate (602), and the second sensor (1086) is used to detect the position of the second plug plate (20342). The control module (1084) controls the linear cylinder (1082) to operate according to the signals of the first sensor (1085) and the second sensor (1086), so that the pneumatic chuck (1083) clamps the second plug plate (20342) and inserts the first plug plate (20341) into the spring buckle.

8. A buffer device for spray painting suspension conveying according to claim 1, characterized in that, A first reversing plate (104) is provided at the connection between the main conveyor frame (101) and the first diversion frame (102), and a second reversing plate (105) is provided at the connection between the first diversion frame (102) and the second diversion frame (103). The first reversing plate (104) and the second reversing plate (105) are used to switch the running channel of the suspended basket assembly (2).

9. A buffer device for spray painting suspension conveying according to claim 1, characterized in that, The buffer rack (4) is mounted on the support base assembly (3), which is slidably fitted on the slide rail assembly (5) and driven to move by the drive assembly to switch different buffer conveyor racks (402) aligned with one end of the first diversion rack (102) or the second diversion rack (103).

10. A buffer device for paint spraying suspension conveying according to claim 8 or 9, characterized in that, The basket body (201) deflects 20° to 45° when entering the first diversion rack (102) to reduce the distance between adjacent buffer conveyor racks (402).

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