RB carrying upper and lower layer connection rotary structure

Abstract

The invention discloses an RB carrying upper and lower layer connection rotation structure which is characterized in that a lifting structure is mounted on a base, a rotating structure is mounted on the lifting structure, a rotating plate is mounted above the rotating structure, and a floating plate is mounted on the rotating plate in an up-down sliding manner through a floating part; a plurality of clamping sliding grooves distributed in a circumferential array mode are formed in the floating plate, a clamping piece used for positioning the center of a jig is slidably connected in each clamping sliding groove in an inserted mode, the clamping pieces are slidably connected with the rotating plate, a plurality of locking pieces used for limiting the clamping pieces are installed on the rotating plate, and the locking pieces are connected with the clamping sliding grooves in an inserted mode. The floating plate and the clamping pieces are arranged on the lifting structure, in the upward moving process of the jig, under the action of the gravity of the jig, the clamping pieces can automatically clamp and position the jig, so that the jig is located in the center of the upper portion of the floating plate, and the horizontality and stability of the jig in the follow-up moving process are guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of conveying equipment, in particular to an RB conveying upper and lower layer connection rotary structure. BACKGROUND

[0002] In the field of precision manufacturing such as electronics and semiconductors, the automatic production line of RB type workpieces (such as semiconductor wafer carriers, precision electronic component trays, etc.) often adopts an upper and lower layer layout to optimize space utilization. In such production lines, RB type workpieces are usually transported by jigs, and the core requirement is to realize smooth connection and direction switching of jigs between upper and lower layer conveying structures, to ensure that the workpieces remain horizontal and stable during transportation, and to avoid damage to the workpieces or positioning failure in subsequent processes due to positional deviation or shaking. The current industry solution to realize the transfer of jigs between upper and lower layers adopts a separate lifting device and rotary device, which is designed in a split body. First, the jigs are lifted from the lower conveying line by the lifting mechanism, then the jigs are rotated by a separate rotary mechanism, and finally the jigs are transferred to the upper conveying line by another set of conveying mechanism. Such a solution has the problems of complex structure, large space occupation, poor coordination of equipment linkage, and vibration during lifting and rotating action switching, which leads to a decrease in jig positioning accuracy. If there is a slight deviation in the initial placement position of the jigs on the lower conveying line, it cannot be automatically corrected during the transfer process, which makes it difficult to accurately dock the jigs when they are transferred to the upper conveying line, affecting the processing accuracy of subsequent processes. Therefore, we designed an RB conveying upper and lower layer connection rotary structure. SUMMARY

[0003] The RB conveying upper and lower layer connection rotary structure proposed by the present application solves the above problems.

[0004] In order to achieve the above purpose, the present application adopts the following technical scheme: An RB conveying upper and lower layer connection rotary structure, comprising a base, two groups of front and rear symmetrically distributed vertical frames are installed above the base, a conveying piece two and a conveying piece one are installed between the two vertical frames from top to bottom, a jig is placed above the conveying piece one, a lifting structure is installed on the base, a rotary structure is installed on the lifting structure, a rotary plate is installed above the rotary structure, a floating plate is installed on the rotary plate through a floating piece in an up and down sliding manner, a plurality of clamping grooves are arranged in a circular array on the floating plate, a clamping piece for positioning the center of the jig is slidably inserted into each clamping groove, the clamping piece is slidably connected with the rotary plate, and a plurality of locking pieces for limiting the clamping piece are installed on the rotary plate.

[0005] Further, the conveying part one comprises side frames fixed inside the vertical frames, each side frame is rotatably installed with pulleys at left and right ends through bearings, the two pulleys on the same side frame are installed with conveying belts in tension between them, the pulleys between the two side frames are drivingly connected through a transmission shaft, one end of the transmission shaft is connected with a servo motor, the servo motor can make the conveying belts on the two side frames rotate synchronously through the transmission shaft, so that the jig can be conveyed on the two conveying belts. The conveying part one and the conveying part two are the same in structure, the distance between the two conveying belts in the conveying part one is smaller than the distance between the two conveying belts in the conveying part two.

[0006] Further, the lifting structure comprises a mounting base plate fixed on the base, the mounting base plate is located between the two vertical frames, a lifting cylinder is installed below the mounting base plate, a push rod of the lifting cylinder penetrates through the mounting base plate and is located above the mounting base plate, a lifting frame is fixed on the top of the push rod of the lifting cylinder, four groups of guide sleeves in rectangular distribution are fixed on the mounting base plate, guide columns are slidingly inserted into the guide sleeves, the top end of the guide column is fixed with the lifting frame, a rectangular opening is formed on the base, after the mounting base plate is fixed above the base, the lifting cylinder can be directly inserted into the rectangular opening, which is convenient for the installation and disassembly of the lifting structure.

[0007] Further, the rotating structure comprises a rotating motor installed on the lifting frame, a rotating disc is installed on the output shaft of the rotating motor, a rotating plate is fixed above the rotating disc through screws, the axis of the circular hole in the center of the rotating plate is collinear with the axis of the rotating disc.

[0008] Further, the floating part comprises a guide seat fixed on the rotating plate, a guide rod is slidingly inserted into the guide seat, the top end of the guide rod is fixed with the floating plate, a jack spring is sleeved on the guide rod, the upper and lower ends of the jack spring are respectively abutted with the floating plate and the guide seat, a limiting ring is arranged at the bottom end of the guide rod for limiting the rising height of the guide rod, the floating plate has a certain distance from the rotating plate under the action of the floating part, the floating plate moves upward under the action of the lifting structure, when the floating plate contacts with the jig and lifts up the jig, the floating plate will move downward a distance under the action of the gravity of the jig, so that the jack spring is in a compressed state.

[0009] Further, the clamping part comprises a clamping plate slidingly inserted into the clamping sliding groove, a clamping roller is rotatably installed above the clamping plate through a shaft pin, the clamping roller can reduce the friction between the clamping roller and the positioning groove of the jig, when the clamping part moves downward, the jig is overlapped above the conveying part two, the clamping roller can be pulled downward to separate from the inner wall of the jig, a translation plate is welded below the clamping plate, a rectangular slot is formed on the translation plate, a translation block is slidingly inserted into the rectangular slot, the translation block is fixed above the rotating plate through screws, which makes the clamping plate only move linearly on the rotating plate, but cannot move up and down. The clamping plate is provided with a translation inclined groove arranged obliquely, a driving roller is fixed below the floating plate through an axle support, the driving roller is slidingly inserted into the translation inclined groove, the distance between the bottom end of the translation inclined groove and the center of the rotating plate is greater than the distance between the top end of the translation inclined groove and the center of the rotating plate, when the floating plate moves downward under the action of the gravity of the jig, the driving roller will move downward together, thereby enabling the plurality of clamping plates to move synchronously toward the center of the rotating plate.

[0010] Further, a plurality of positioning grooves are arranged in a circumferential array on the lower surface of the jig, the number and position of the positioning grooves correspond one-to-one to the number and position of the plurality of clamping plates, the positioning grooves are arranged in a rectangular structure, and the depth of the positioning grooves is deepened, the jig is placed vertically and moves from right to left to the leftmost end of the two conveying belts in the conveying member, at this time, the jig is directly above the floating plate, then the rotating plate and the floating plate move upward under the action of the lifting structure, the clamping rollers on the plurality of clamping plates are first inserted into the positioning grooves, and then the floating plate contacts the lower surface of the jig, at this time, there is still a certain distance between the top end of the clamping plate and the top of the positioning groove.

[0011] Further, a plurality of unlocking sliding grooves are arranged in a circumferential array on the rotating plate, and the plurality of unlocking sliding grooves are respectively located below the plurality of clamping members, the locking member includes a sliding sleeve slidingly installed below the rotating plate, the top end of the sliding sleeve is provided with an expansion groove, a locking head is slidingly inserted into the expansion groove, the upper end of the locking head passes through the unlocking sliding groove and is located above the rotating plate, a locking spring is placed in the expansion groove, and the upper and lower ends of the locking spring respectively abut against the locking head and the bottom end of the expansion groove, the locking spring enables the locking head to always have a tendency to move upward, and the cross section of the expansion groove and the locking head is arranged in a convex structure.

[0012] Further, a plurality of locking grooves are arranged in a uniform distribution at the bottom end of the clamping plate, one end of the locking groove toward the center of the rotating plate is designed perpendicularly to form a vertical surface, the other end of the locking groove is designed as a downward inclined surface, the top end of the locking head is cut to form a contact inclined surface, the slope of the contact inclined surface is the same as that of the downward inclined surface, and the locking head is inserted into the locking groove under the action of the locking spring.

[0013] Further, guide plates are arranged on both sides of the sliding sleeve, guide grooves are arranged on the guide plates, guide blocks are slidingly inserted into the guide grooves, reset springs are connected to the guide blocks, the other end of the reset spring is fixed to the inner wall of the guide groove, and the guide plates are vertically distributed between the clamping plates. The bottom end of the sliding sleeve is welded with a remote part, and the bottom end of the remote part is cut off to form a remote slope. Multiple unlocking parts are fixed above the lifting frame in a circular array. The top slope of the unlocking parts is designed to form an unlocking slope. The multiple unlocking parts are respectively located directly below the corresponding remote part. When the lifting structure is at the bottom, the locking head disengages from the locking groove. At this time, the return spring is in a compressed state, and the clamping plate can move normally in a straight line. When the lifting structure moves the rotating plate and floating plate upwards, the unlocking ramp above the unlocking component will not contact the moving ramp below the moving part, and the locking head will be locked into the locking groove.

[0014] The beneficial effects of this invention are: 1. By integrating the rotating structure above the lifting structure, the fixture on the lower conveyor can be reversed and transported to the upper conveyor. With the help of the floating plate and multiple clamping components on the lifting structure, the fixture can be automatically clamped and positioned by its own gravity during the upward movement of the fixture, so that the fixture is in the center above the floating plate. This prevents the fixture from shifting due to shaking during the lifting process, and ensures that the fixture is placed in the middle above the second conveyor, thus ensuring the horizontality and stability of the fixture during subsequent movement. 2. By setting a locking device on the rotating plate for positioning the clamping parts, when the rotating plate and the floating plate are at their lowest positions, the locking device releases the positioning of the clamping parts, allowing multiple clamping parts to open to their maximum distance. During the lifting and lowering process in contact with the fixture, even if the fixture is vibrated during the lifting and lowering process, the clamping plate can only continue to clamp the fixture and cannot loosen. The inability of the clamping plate to loosen also ensures that the fixture can only move and vibrate up and down, and cannot sway back and forth or left and right. Even if it is vibrated, the fixture can always be located at the center above the floating plate, ensuring the horizontality and stability of the fixture during subsequent movement. Attached Figure Description

[0015] Figure 1 This is a front view of an RB transport upper and lower layer connecting rotary structure proposed in this invention; Figure 2 for Figure 1 Axonometric projections of the front and rear angles; Figure 3 for Figure 2 Schematic diagram of the lifting structure, rotating structure, and clamping components; Figure 4 for Figure 3 Schematic diagram of the lifting and rotating structure in the middle; Figure 5 for Figure 4 Bottom view of the rotating plate and floating components; Figure 6 forFigure 5 Exploded view of the rotating plate and floating components; Figure 7 for Figure 6 Schematic diagram of the middle clamping and locking components; Figure 8 for Figure 7 Exploded view of the clamping and locking components; Figure 9 for Figure 1 A cross-sectional schematic diagram; Figure 10 for Figure 9 Enlarged view of a portion of the image.

[0016] Numbering on the map: 1. Base; 11. Vertical frame; 2. Conveyor component 1; 21. Side frame; 22. Conveyor belt; 23. Drive shaft; 24. Servo motor; 3. Conveyor component two; 4. Jig; 41. Positioning slot; 5. Lifting structure; 51. Mounting base plate; 52. Lifting cylinder; 53. Guide column; 54. Lifting frame; 6. Rotating structure; 61. Rotary motor; 62. Rotating disk; 63. Unlocking component; 631. Unlocking ramp; 7. Rotating plate; 71. Floating plate; 711. Clamping groove; 712. Drive roller; 72. Lifting spring; 73. Guide rod; 74. Unlocking groove; 8. Clamping component; 81. Clamping plate; 811. Translation plate; 812. Translation block; 82. Clamping roller; 83. Translation chute; 84. Locking groove; 841. Downward pressure slope; 9. Locking component; 91. Sliding sleeve; 911. Telescopic groove; 92. Locking head; 921. Locking spring; 922. Contact slope; 93. Guide plate; 931. Return spring; 932. Guide block; 933. Guide groove; 94. Removing part; 941. Removing slope. Detailed Implementation

[0017] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0018] Reference Figure 1 - Figure 10A rotary structure for connecting upper and lower layers of RB transport includes a base 1. Two sets of symmetrically distributed vertical frames 11 are installed on the base 1. Conveyor component 2 and conveyor component 3 are installed between the two vertical frames 11 from top to bottom. A fixture 4 is placed on the conveyor component 2. A lifting structure 5 is installed on the base 1. A rotating structure 6 is installed on the lifting structure 5. A rotating plate 7 is installed on the rotating structure 6. A floating plate 71 is installed on the rotating plate 7 by means of a floating component. The floating plate 71 has multiple clamping grooves 711 arranged in a circular array. Each clamping groove 711 is slidably inserted with a clamping component 8 for center positioning of the fixture 4. The clamping component 8 is slidably connected to the rotating plate 7. Multiple locking components 9 for limiting the clamping component 8 are installed on the rotating plate 7.

[0019] Reference Figure 1 , Figure 2 The conveyor component 2 includes a side frame 21 fixed inside the vertical frame 11. Each side frame 21 has pulleys rotatably mounted on both ends of the left and right sides via bearings. A conveyor belt 22 is tensioned between two pulleys on the same side frame 21. The pulleys between the two side frames 21 are connected by a drive shaft 23. One end of the drive shaft 23 is connected to a servo motor 24. The servo motor 24 can make the conveyor belts 22 on the two side frames 21 rotate synchronously through the drive shaft 23, so that the fixture 4 can be conveyed on the two conveyor belts 22. The structures of conveyor 1 (2) and conveyor 2 (3) are the same. The distance between the two conveyor belts 22 in conveyor 1 (2) is smaller than the distance between the two conveyor belts 22 in conveyor 2 (3). After the fixture 4 is placed longitudinally on the two conveyor belts 22 in conveyor 1 (2) and conveyed to the top of the floating plate 71, the floating plate 71 lifts it to the top of conveyor 2 (3) under the action of the lifting structure 5. Under the action of the rotating structure 6, the fixture 4 is rotated 90 degrees, so that the fixture 4 changes from longitudinal to horizontal placement. Then, the floating plate 71 moves downward under the action of the lifting structure 5. The two ends of the fixture 4 can overlap the conveyor belts 22 of conveyor 2 (3), so that it can be placed on conveyor 2 (3) for conveying.

[0020] Reference Figure 3 , Figure 4 and Figure 9The lifting structure 5 includes a mounting base 51 fixed on the base 1. The mounting base 51 is located between two vertical frames 11. A lifting cylinder 52 is installed below the mounting base 51. The push rod of the lifting cylinder 52 passes through the mounting base 51 and is positioned above it. A lifting frame 54 is fixed to the top of the push rod of the lifting cylinder 52. Four sets of rectangularly distributed guide sleeves are fixed on the mounting base 51. Guide columns 53 are slidably inserted into the guide sleeves. The top of the guide columns 53 is fixed to the lifting frame 54. A rectangular opening is provided on the base 1. After the mounting base 51 is fixed above the base 1, the lifting cylinder 52 can be directly inserted into the rectangular opening, which facilitates the installation and disassembly of the lifting structure 5.

[0021] The rotating structure 6 includes a rotating motor 61 mounted on the lifting frame 54. A rotating disk 62 is mounted on the output shaft of the rotating motor 61. A rotating plate 7 is fixed above the rotating disk 62 by screws. The axis of the circular hole at the center of the rotating plate 7 is collinear with the axis of the rotating disk 62.

[0022] Reference Figure 5 , Figure 6 The floating component includes a guide seat fixed on the rotating plate 7. A guide rod 73 is slidably inserted into the guide seat. The top end of the guide rod 73 is fixed to the floating plate 71. A lifting spring 72 is sleeved on the guide rod 73. The upper and lower ends of the lifting spring 72 abut against the floating plate 71 and the guide seat, respectively. A limit ring is provided at the bottom end of the guide rod 73 to limit the rising height of the guide rod 73. Under the action of the floating component, the floating plate 71 has a certain distance from the rotating plate 7. The floating plate 71 moves upward under the action of the lifting structure 5. When the floating plate 71 contacts the fixture 4 and lifts the fixture 4, the floating plate 71 will move downward a certain distance under the action of the gravity of the fixture 4, so that the lifting spring 72 is in a compressed state.

[0023] Reference Figure 3 - Figure 10 The clamping component 8 includes a clamping plate 81 that is slidably inserted into the clamping groove 711. A clamping roller 82 is rotatably mounted on the upper part of the clamping plate 81 via a shaft pin. The clamping roller 82 can reduce the friction between the clamping component 8 and the positioning groove 41 of the fixture 4. When the clamping component 8 moves downward, the fixture 4 overlaps above the second conveyor 3. The clamping roller 82 can be pulled downward to disengage from the inner wall of the fixture 4. A translation plate 811 is welded below the clamping plate 81. A rectangular groove is opened on the translation plate 811. A translation block 812 is slidably inserted into the rectangular groove. The translation block 812 is fixed above the rotating plate 7 by screws. This makes the clamping plate 81 only able to move linearly on the rotating plate 7 and not up and down. An inclined translation groove 83 is provided on the clamping plate 81. A drive roller 712 is fixed below the floating plate 71 by a shaft frame. The drive roller 712 is slidably inserted into the translation groove 83. The distance between the bottom end of the translation groove 83 and the center of the rotating plate 7 is greater than the distance between the top end of the translation groove 83 and the center of the rotating plate 7. When the floating plate 71 moves downward under the gravity of the fixture 4, the drive roller 712 will move downward along with it, so that multiple clamping plates 81 move synchronously toward the center of the rotating plate 7.

[0024] The lower surface of the fixture 4 is provided with multiple circumferentially distributed positioning grooves 41. The number and position of the positioning grooves 41 correspond one-to-one with the number and position of the multiple clamping plates 81. The positioning grooves 41 are rectangular in structure and have a deeper design. After the fixture 4 is placed longitudinally and moved from right to left to the leftmost end of the two conveyor belts 22 in the conveyor component 2, the fixture 4 is directly above the floating plate 71. Then, the rotating plate 7 and the floating plate 71 move upward under the action of the lifting structure 5. The clamping rollers 82 on the multiple clamping plates 81 are first inserted into the positioning grooves 41, and then the floating plate 71 will contact the lower surface of the fixture 4. At this time, there is still a certain distance between the top of the clamping plate 81 and the top of the positioning groove 41. After the lower surface of the fixture 4 contacts the lower surface of the floating plate 71, the floating plate 71 continues to move upward under the action of the lifting structure 5, lifting the fixture 4 upward. During the upward lifting of the fixture 4, the floating plate 71 will move downward under the action of the gravity of the fixture 4. When the floating plate 71 moves downward under the action of the gravity of the fixture 4, the drive roller 712 will move downward along with it. Since the clamping plate 81 is provided with an inclined translation groove 83, the drive roller 712 is fixed below the floating plate 71 by a shaft frame. The drive roller 712 is slidably inserted into the translation groove 83. Inside, the distance between the bottom of the translation chute 83 and the center of the rotating plate 7 is greater than the distance between the top of the translation chute 83 and the center of the rotating plate 7. Therefore, multiple clamping plates 81 move synchronously toward the center of the rotating plate 7, and multiple clamping rollers 82 will simultaneously contact and clamp the inner walls of multiple positioning grooves 41, so that the fixture 4 is located above the center of the floating plate 71. This avoids the fixture 4 from shifting due to shaking during the lifting process, thereby ensuring that the fixture 4 can be placed above the middle of the conveyor 3, and ensuring the horizontality and stability of the fixture 4 during subsequent movement.

[0025] Reference Figure 5 - Figure 10The rotating plate 7 has multiple unlocking grooves 74 arranged in a circular array. The multiple unlocking grooves 74 are located below multiple clamping parts 8. The locking part 9 includes a sliding sleeve 91 that is slidably installed below the rotating plate 7. The top of the sliding sleeve 91 has a telescopic groove 911. A locking head 92 is slidably inserted into the telescopic groove 911. The upper end of the locking head 92 passes through the unlocking groove 74 and is above the rotating plate 7. A locking spring 921 is placed in the telescopic groove 911. The upper and lower ends of the locking spring 921 abut against the locking head 92 and the bottom end of the telescopic groove 911, respectively. The locking spring 921 makes the locking head 92 always have an upward tendency. The cross-section of the telescopic groove 911 and the locking head 92 is set in a convex shape.

[0026] Reference Figure 7 , Figure 8 The clamping plate 81 has multiple evenly distributed locking grooves 84 at its bottom end. One end of the locking groove 84 facing the center of the rotating plate 7 is designed to form a vertical surface, and the other end of the locking groove 84 is designed to form a downward pressing slope 841. The top part of the locking head 92 is cut off to form a contact slope 922. The slope of the contact slope 922 is the same as the slope of the downward pressing slope 841. The locking head 92 is inserted into the locking groove 84 under the action of the locking spring 921. When the clamping plate 81 moves toward the center of the rotating plate 7 under the action of the drive roller 712 to clamp the fixture 4, the downward pressing slope 841 below the clamping plate 81 can squeeze the contact slope 922 downward, causing the locking head 92 to retract into the telescopic groove 911. This allows the clamping plate 81 to move normally toward the center of the rotating plate 7 to position the fixture 4. However, the clamping plate 81 cannot move in the opposite direction due to the obstruction of the vertical plane and the vertical plane on the other side of the locking head 92. Even if the fixture 4 is vibrated during the lifting and lowering process, the clamping plate 81 can only continue to clamp the fixture 4 and cannot loosen it. The inability of the clamping plate 81 to loosen also ensures that the fixture 4 can only move up and down and cannot sway back and forth or left and right. Even if it is vibrated, the fixture 4 can always be located at the center above the floating plate 71, ensuring the horizontality and stability of the fixture 4 during subsequent movement.

[0027] Reference Figure 8 - Figure 10 Guide plates 93 are provided on both sides of the sliding sleeve 91. Guide grooves 933 are provided on the guide plates 93. Guide blocks 932 are slidably inserted into the guide grooves 933. A reset spring 931 is connected to the guide block 932. The other end of the reset spring 931 is fixed to the inner wall of the guide groove 933. The guide plates 93 and the clamping plate 81 are perpendicularly distributed. The bottom end of the sliding sleeve 91 is welded with a distance portion 94. The bottom end of the distance portion 94 is cut off to form a distance slope 941. Multiple unlocking components 63 are fixed above the lifting frame 54 in a circular array. The top slope of the unlocking component 63 is designed to form an unlocking slope 631. The multiple unlocking components 63 are respectively located directly below the corresponding distance portion 94. When the lifting structure 5 is at its lowest point, the unlocking slope 631 above the unlocking component 63 contacts the distance slope 941 below the distance portion 94. The distance portion 94 is pushed by the unlocking slope 631, thereby causing the sliding sleeve 91 and the locking head 92 to move away from the locking groove 84. The locking head 92 disengages from the locking groove 84. At this time, the return spring 931 is in a compressed state, and the clamping plate 81 can move normally in a straight line. When the lifting structure 5 drives the rotating plate 7 and the floating plate 71 to move upward, the unlocking slope 631 above the unlocking member 63 does not contact the remote slope 941 below the remote part 94. Under the action of the return spring 931, the locking head 92 will be engaged in the locking groove 84, so that the clamping plate 81 can only move in one direction.

[0028] Working principle: The right end of the rotary structure is equipped with two conveyor belts from top to bottom. The lower conveyor belt is used to move the fixture 4 containing the workpiece to the first conveyor 2. After the fixture 4 is rotated and reversed, it will be moved to the upper conveyor belt under the action of the second conveyor 3, and then transported to other processes.

[0029] In the initial state, the lifting structure 5 makes the rotating structure 6, the rotating plate 7 and the floating plate 71 all at the bottom. At this time, the unlocking slope 631 above the unlocking member 63 contacts the moving slope 941 below the moving part 94. The moving part 94 is pushed by the unlocking slope 631, thereby making the sliding sleeve 91 and the locking head 92 move away from the locking groove 84. The locking head 92 disengages from the locking groove 84. At this time, the return spring 931 is in a compressed state, which makes the locking head 92 tend to move towards the side of the locking groove 84. When there is no other gravitational force acting on the floating plate 71, the floating plate 71 will be at the top under the action of the lifting spring 72. The drive roller 712 below the floating plate 71 is located above the translational chute 83 of the clamping plate 81. At this time, the multiple clamping plates 81 are far apart from each other and the distance is at its maximum.

[0030] After the fixture 4 is placed longitudinally and moved from right to left to the leftmost end of the two conveyor belts 22 in the first conveyor 2, the fixture 4 is directly above the floating plate 71. Then, the rotating plate 7 and the floating plate 71 move upward under the action of the lifting structure 5. The clamping rollers 82 on the multiple clamping plates 81 are first inserted into the positioning groove 41, and then the floating plate 71 will contact the lower surface of the fixture 4. At this time, there is still a certain distance between the top of the clamping plate 81 and the top of the positioning groove 41. At the same time, the unlocking ramp 631 above the unlocking member 63 completely disengages from the remote ramp 941 below the remote part 94. Under the action of the return spring 931, the locking head 92 will be engaged in the locking groove 84, so that the clamping plate 81 can only move in one direction.

[0031] After the lower surface of the fixture 4 contacts the lower surface of the floating plate 71, the floating plate 71 continues to move upward under the action of the lifting structure 5 and lifts the fixture 4 upward. During the process of lifting the fixture 4 upward, the floating plate 71 will be moved downward by the gravity of the fixture 4. When the floating plate 71 moves downward by the gravity of the fixture 4, the drive roller 712 will move downward along with it, pushing the clamping plate 81 toward the center of the rotating plate 7. During this process, the downward pressing slope 841 below the clamping plate 81 can squeeze the contact slope 922 downward, causing the locking head 92 to retract into the telescopic groove 911, so that the clamping plate 81 can move normally toward the center of the rotating plate 7. Since the clamping plate 81 is provided with an inclined translation groove 83, and the floating plate 71 is fixed with a drive roller 712 by a shaft frame below it, the drive roller 712 is slidably inserted into the translation groove 83. The distance between the bottom end of the translation groove 83 and the center of the rotating plate 7 is greater than the distance between the top end of the translation groove 83 and the center of the rotating plate 7. Therefore, multiple clamping plates 81 move towards the center of the rotating plate 7 simultaneously, and multiple clamping rollers 82 will simultaneously contact and clamp the inner wall of multiple positioning grooves 41, so that the fixture 4 is located at the center above the floating plate 71. The clamping plate 81 is blocked by the vertical plane and the vertical plane on the other side of the locking head 92, so it cannot move in the opposite direction. Even if the fixture 4 is vibrated during the lifting process, the clamping plate 81 can only continue to clamp the fixture 4 and cannot loosen. The clamping plate 81 cannot loosen, which also ensures that the fixture 4 can only move up and down and cannot sway back and forth or left and right. Even if it is vibrated, the fixture 4 can always be in the center above the floating plate 71, which ensures the horizontality and stability of the fixture 4 during subsequent movement.

[0032] After the floating plate 71 is lifted above the conveyor 3 by the lifting structure 5, the rotating structure 6 rotates the fixture 4 by 90 degrees, changing the fixture 4 from a longitudinal position to a transverse position. Then, the floating plate 71 moves downward under the action of the lifting structure 5, and the two ends of the fixture 4 can be attached to the conveyor belt 22 of the conveyor 3, so that it can be placed on the conveyor 3 for conveying. The rotating structure 6, the rotating plate 7, and the floating plate 71 return to the initial position to wait for the next lifting and rotation.

[0033] By integrating the rotating structure 6 above the lifting structure 5, the fixture 4 on the lower conveyor 2 can be reversed and transported to the upper conveyor 3. With the help of the floating plate 71 and multiple clamping parts 8 set on the lifting structure 5, the fixture 4 can be automatically clamped and positioned by its own gravity during the upward movement of the fixture 4, so that the fixture 4 is located at the center above the floating plate 71. This prevents the position of the fixture 4 from shifting due to shaking during the lifting process, and allows the fixture 4 to be placed in the middle above the conveyor 3, ensuring the horizontality and stability of the fixture 4 during subsequent movement. By setting a locking member 9 on the rotating plate 7 for positioning the clamping member 8, when the rotating plate 7 and the floating plate 71 are at their lowest positions, the locking member 9 releases the positioning of the clamping member 8, allowing multiple clamping members 8 to open to their maximum distance. During the lifting and lowering process in contact with the fixture 4, even if the fixture 4 is vibrated during the lifting and lowering process, the clamping plate 81 can only continue to clamp the fixture 4 and cannot loosen. The fact that the clamping plate 81 cannot loosen also ensures that the fixture 4 can only move and vibrate up and down, and cannot sway back and forth or left and right. Even if it is vibrated, the fixture 4 can always be located at the center above the floating plate 71, ensuring the horizontality and stability of the fixture 4 during subsequent movement.

[0034] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," 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.

[0035] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0036] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A rotary structure for connecting upper and lower layers of an RB transporter, characterized in that, The system includes a base (1), on which two sets of symmetrically distributed vertical frames (11) are installed. Between the two vertical frames (11), from top to bottom, a second conveyor (3) and a first conveyor (2) are installed. A fixture (4) is placed on top of the first conveyor (2). A lifting structure (5) is installed on the base (1). A rotating structure (6) is installed on the lifting structure (5). A rotating plate (7) is installed on top of the rotating structure (6). A floating plate (71) is installed on the rotating plate (7) by means of a floating component. A plurality of clamping grooves (711) arranged in a circular array are provided on the floating plate (71). A clamping component (8) for center positioning of the fixture (4) is slidably inserted in each clamping groove (711). The clamping component (8) is slidably connected to the rotating plate (7). A plurality of locking components (9) for limiting the clamping component (8) are installed on the rotating plate (7).

2. The RB transport upper and lower layer connecting rotary structure according to claim 1, characterized in that, The conveyor component 1 (2) includes a side frame (21) fixed inside the vertical frame (11). Each side frame (21) has pulleys mounted on both the left and right ends via bearings. A conveyor belt (22) is tensioned between the two pulleys on the same side frame (21). The pulleys between the two side frames (21) are connected by a drive shaft (23). One end of the drive shaft (23) is connected to a servo motor (24). The structures of conveyor component one (2) and conveyor component two (3) are the same. The distance between the two conveyor belts (22) in conveyor component one (2) is smaller than the distance between the two conveyor belts (22) in conveyor component two (3).

3. The RB transport upper and lower layer connecting rotary structure according to claim 1, characterized in that, The lifting structure (5) includes a mounting base (51) fixed on the base (1). The mounting base (51) is located between two vertical frames (11). A lifting cylinder (52) is installed below the mounting base (51). The push rod of the lifting cylinder (52) passes through the mounting base (51) and is placed above it. A lifting frame (54) is fixed to the top of the push rod of the lifting cylinder (52). Four sets of rectangular guide sleeves are fixed on the mounting base (51). Guide columns (53) are slidably inserted into the guide sleeves. The top of the guide column (53) is fixed to the lifting frame (54).

4. The RB transport upper and lower layer connecting rotary structure according to claim 3, characterized in that, The rotating structure (6) includes a rotating motor (61) mounted on a lifting frame (54), a rotating disk (62) mounted on the output shaft of the rotating motor (61), and a rotating plate (7) fixed above the rotating disk (62) by screws.

5. The RB transport upper and lower layer connecting rotary structure according to claim 1, characterized in that, The floating component includes a guide seat fixed on a rotating plate (7), a guide rod (73) which is slidably inserted into the guide seat, the top end of the guide rod (73) is fixed to the floating plate (71), and a lifting spring (72) is sleeved on the guide rod (73). The upper and lower ends of the lifting spring (72) abut against the floating plate (71) and the guide seat, respectively.

6. The RB transport upper and lower layer connecting rotary structure according to claim 4, characterized in that, The clamping member (8) includes a clamping plate (81) that is slidably inserted into the clamping groove (711). A clamping roller (82) is rotatably mounted on the upper part of the clamping plate (81) via a shaft pin. A translation plate (811) is welded to the lower part of the clamping plate (81). A rectangular groove is provided on the translation plate (811). A translation block (812) is slidably inserted into the rectangular groove. The translation block (812) is fixed above the rotating plate (7) by screws. The clamping plate (81) is provided with an inclined translation groove (83), and a drive roller (712) is fixed below the floating plate (71) by a shaft frame. The drive roller (712) is slidably inserted into the translation groove (83).

7. The RB transport upper and lower layer connecting rotary structure according to claim 6, characterized in that, The fixture (4) has multiple circumferentially distributed positioning grooves (41) on its lower surface. The number and position of the positioning grooves (41) correspond one-to-one with the number and position of the multiple clamping plates (81). The positioning grooves (41) are rectangular in shape and have a deeper design.

8. A rotary structure for connecting upper and lower layers of an RB transporter according to claim 7, characterized in that, The rotating plate (7) has multiple unlocking slots (74) arranged in a circular array. The multiple unlocking slots (74) are located below multiple clamping parts (8). The locking part (9) includes a sliding sleeve (91) slidably installed below the rotating plate (7). The top of the sliding sleeve (91) has a telescopic groove (911). A locking head (92) is slidably inserted into the telescopic groove (911). The upper end of the locking head (92) passes through the unlocking slot (74) and is located above the rotating plate (7). A locking spring (921) is placed in the telescopic groove (911). The upper and lower ends of the locking spring (921) abut against the locking head (92) and the bottom end of the telescopic groove (911), respectively.

9. The RB transport upper and lower layer connecting rotary structure according to claim 8, characterized in that, The clamping plate (81) has a plurality of evenly distributed locking grooves (84) at its bottom end. One end of the locking groove (84) facing the center of the rotating plate (7) is designed to form a vertical surface, and the other end of the locking groove (84) is designed to form a downward pressing slope (841). The top part of the locking head (92) is cut off to form a contact slope (922), and the slope of the contact slope (922) is the same as the slope of the downward pressing slope (841).

10. The RB transport upper and lower layer connecting rotary structure according to claim 9, characterized in that, Guide plates (93) are provided on both sides of the sliding sleeve (91). Guide grooves (933) are provided on the guide plates (93). A guide block (932) is slidably inserted into the guide groove (933). A reset spring (931) is connected to the guide block (932). The other end of the reset spring (931) is fixed to the inner wall of the guide groove (933). The sliding sleeve (91) has a remote part (94) welded to its bottom end. The remote part (94) has a portion removed from its bottom end to form a remote inclined surface (941). Multiple unlocking components (63) arranged in a circular array are fixed above the lifting frame (54). The top inclined surface of the unlocking component (63) is designed to form an unlocking inclined surface (631). The multiple unlocking components (63) are respectively located directly below the corresponding remote part (94).

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