Chain link type annular guide rail for precise conveying

Abstract

The invention relates to the technical field of transportation equipment, and particularly discloses a precise conveying chain link type annular guide rail which comprises two linear guide rails, a semicircular guide rail, a rotating seat and a chain link block, and the semicircular guide rail is installed at the ends of the two linear guide rails; the rotating seat is rotationally mounted at one ends, away from the semicircular guide rail, of the two linear guide rails; rotating discs are connected to the top and bottom circumferential surfaces of the rotating seat; the plurality of chain link blocks are uniformly arranged around the peripheral surface of the annular guide rail; every two adjacent chain link blocks are connected through a hinge shaft, the inner side face of each chain link block is rotationally connected with two first rolling wheels through a rotating shaft, the two first rolling wheels are arranged up and down, and the top and the bottom end of each hinge shaft are rotationally connected with second rolling wheels. A convex plate for the first roller to roll is arranged around the outer side surface of the annular guide rail; arc-shaped clamping grooves allowing the second rolling wheels to enter are formed in the circumferential faces of the two rotating discs, and the rotating base is driven by a motor. The method has the effect of improving the load capacity and the positioning precision of the annular guide rail.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of transportation equipment, in particular to a chain link type ring guide rail for precise conveying. BACKGROUND

[0002] The ring guide rail plays an important role in current work production and is usually used for conveying various materials. Currently, the commonly used ring guide rails include synchronous belt type and chain type.

[0003] The synchronous belt type can realize fast conveying of materials, but has poor load capacity and cannot load heavy materials. The chain type has strong load capacity, but has meshing error between the chain and the sprocket and is prone to shaking during conveying. In addition, the position is not fixed when stopping, and therefore the chain type is not suitable for high-precision material processing. The current ring guide rail has the problems of poor load capacity and poor positioning accuracy. SUMMARY

[0004] In order to solve the problems of poor load capacity and poor positioning accuracy of the ring guide rail, the present application provides a chain link type ring guide rail for precise conveying.

[0005] The chain link type ring guide rail for precise conveying provided by the present application adopts the following technical scheme: The chain link type ring guide rail for precise conveying comprises linear guide rails, a semicircular guide rail, a rotating seat and chain link blocks. The linear guide rails are provided in two, and the semicircular guide rail is installed at the end of the two linear guide rails. The rotating seat is rotatably installed at the end of the two linear guide rails away from the semicircular guide rail, and the top and bottom circumferential surfaces of the rotating seat are connected with rotating discs. The chain link blocks are provided in multiple, and the multiple chain link blocks are uniformly arranged around the outer circumferential surface of the guide rail formed by the linear guide rails, the semicircular guide rail and the rotating seat. The adjacent two chain link blocks are connected through a hinged shaft, and the inner side surface of the chain link block is rotatably connected with two first rollers arranged in an upper and lower manner through a rotating shaft. The top and bottom ends of the hinged shaft are rotatably connected with second rollers. The outer side surface of the linear guide rail, the semicircular guide rail and the rotating seat is provided with a convex plate for the first rollers to roll on. The circumferential surface of the two rotating discs is provided with an arc-shaped clamping groove for the second rollers at the two ends of the hinged shaft to enter, and the rotating seat is driven by a motor.

[0006] Optionally, the outer side surface of the linear guide rail is provided with a second groove for the second rollers to roll on. The bottom surface of the second groove is provided with a first groove, and the bottom surface of the first groove is connected with a linear convex plate for the two first rollers to roll on. The arc surface of the semicircular guide rail is provided with a third groove, and the bottom surface of the third groove is connected with a semicircular convex plate for the two first rollers to roll on. The second rollers roll on the circumferential surface of the semicircular guide rail. The circumferential surface of the rotating seat is connected with an annular convex plate for the two first rollers to roll on.

[0007] Optionally, a mounting seat is connected between the ends of the two linear guide rails near the semicircular guide rails, and two sliding rods are provided in the mounting seat for horizontal sliding. The ends of the two sliding rods near the semicircular guide rails are connected to a connecting seat, and the connecting seat is connected to the side of the semicircular guide rail; a screw is rotatably connected to the connecting seat through a bearing, and a threaded hole is provided on the side of the semicircular track for threaded connection of one end of the screw, and the other end of the screw is passed through the mounting seat and the end is connected to a rotating column, and a rotating port for rotating the rotating column and the screw is provided in the mounting seat; a first spring is provided on the outer sleeve of the screw, and the two ends of the first spring are respectively pressed against the side surfaces of the mounting seat and the connecting seat close to each other.

[0008] Optionally, there are two second rollers at each end of the hinge shaft, and the two second rollers close to each other on the hinge shaft are engaged with the arc groove, and the end of the second groove is provided with a makeshift opening for the rotating disk to enter, and the end face of the linear convex plate close to the annular convex plate is inclined and close to the circumferential surface of the annular convex plate; both ends of the side of the semicircular guide rail are connected with docking blocks inserted into the end of the linear guide rail, and the top and bottom of the docking block away from the end face of the semicircular guide rail are connected with plug-in plates, and the two second rollers away from each other on the hinge shaft roll on the outer side face of the plug-in plate, and the end face of the linear guide rail is provided with two plug-in grooves for the two plug-in plates to enter; both ends of the semicircular convex plate extend to the outer side face of the docking block, and the linear convex plate is connected with a transition plate close to the end face of the semicircular convex plate, and the transition plate is located on the outer side face of the semicircular plate.

[0009] Optionally, a mounting hole connected to the top and bottom surfaces of the mounting seat is provided in the mounting seat, the mounting hole is connected to the end of the rotating port away from the connecting seat, and a driving mechanism for driving the rotating column to rotate is provided in the mounting hole.

[0010] Optionally, the driving mechanism includes a housing, a driving motor, a worm, a worm wheel, a rotating seat, a spline shaft and a push-pull assembly; the housing is installed in the mounting hole, the driving motor is installed on the top surface of the housing, both ends of the worm are installed in the housing and one end is coaxially connected to the output shaft of the driving motor; both ends of the rotating seat are rotatably connected in the housing through bearings, and the rotating seat is coaxial with the rotating column; the worm wheel is coaxially connected to the outer peripheral surface of the rotating seat, and the worm wheel is meshed with the worm; the spline shaft is slidably connected to the end of the rotating seat near the connecting seat along the axis of the rotating seat, and the end face of the rotating column is provided with a spline groove for the spline shaft to enter; the push-pull assembly is installed on the mounting seat, and the push-pull assembly is used to drive the spline shaft to move along the axis direction of the rotating seat.

[0011] Optionally, a pressure sensor is installed on the side of the mounting seat close to the connecting seat, and the end of the first spring close to the mounting seat is pressed against the surface of the pressure sensor.

[0012] Optionally, the push-pull assembly includes a push-pull rod, a baffle, a second spring and a threaded rod. A rotating hole is provided at the end of the rotating seat away from the spline shaft. The push-pull rod is provided in the rotating hole. One end of the push-pull rod passes through the bottom of the rotating hole and is coaxially connected to the end face of the spline shaft; the baffle is connected to the end of the push-pull rod away from the spline shaft and slides on the inner wall of the rotating hole. The second spring is sleeved on the outer circumference of the push-pull rod, and the second spring is pressed against the baffle and the bottom surface of the rotating hole; the threaded rod is threadedly connected to the mounting seat, one end of the threaded rod extends from the side of the mounting seat away from the connecting seat and is connected to a hexagonal nut, and the other end of the threaded rod extends into the mounting hole and fits into the side of the baffle.

[0013] Optionally, the linear guide rail is formed by splicing together multiple short guide rails, the short guide rail closest to the rotating seat is the first docking section, the short guide rail closest to the semicircular guide rail is the second docking section, and the short guide rail located between the first docking section and the second docking section is the increasing and decreasing section; one end face of the increasing and decreasing section is connected to two insertion rods, and the other end face of the increasing and decreasing section is connected to two slots, the end face of the first docking section close to the increasing and decreasing section is provided with two slots for the two insertion rods to enter, and the end face of the second docking section close to the increasing and decreasing section is provided with two insertion rods inserted into the two slots; in the A circular groove is provided at the joint of the bottom surface of a groove, and the circular groove is divided into two halves; a trumpet-shaped guide ring is connected to the bottom surface of the circular groove, the outer circumference of the guide ring is chamfered, and the guide ring is divided into two semicircular guide rings; a guide rod is slidingly provided on the inner circumference of the guide ring, one end of the guide rod passes through the short guide rail, and the other end of the guide rod extends out of the guide ring and is connected to a tightening ring on the end circumference, the inner circumference of the tightening ring is chamfered, and the inner circumference of the tightening ring fits into the outer circumference of the guide ring, and a nut is threadedly connected to the end of the guide rod away from the guide ring.

[0014] Optionally, a bolt is passed through the guide rod, and the end of the bolt passes through the guide rod. Multiple support blocks are arranged between the two linear guide rails. The support block is located at the joint of the short guide rails. The end face of the support block fits against the side face of the short guide rail. The bolt is threadedly connected to the end face of the support block. The end face of the support block is provided with a makeshift groove for the bolt and the guide rod to enter, and the nut of the bolt is pressed against the end face of the tightening ring.

[0015] In summary, this application includes at least one of the following beneficial technical effects: 1. When materials need to be conveyed, the motor drives the rotating seat to rotate, which in turn drives the rotating disk to rotate. The two rotating disks drive the second roller to move through the arc-shaped slot. The second roller rolls on the bottom surface of the first groove and the arc surface of the semicircular guide rail, while the first roller rolls on the top and bottom surfaces of the convex plate, thus realizing the transmission of the chain link blocks. Since there is no elasticity between the chain link blocks, the chain link blocks can carry heavier materials. The connecting block is tightly attached to the guide rail through the first and second rollers, making the chain link block transmission more stable and more accurate. The servo motor controls the positioning of the chain link blocks with higher accuracy, making it suitable for high-precision material processing. 2. Since the chain link blocks are rigidly connected, sudden jamming may occur when passing through the arc track and the rotating seat. Therefore, the semicircular guide rail is designed to be movable. The chain link block pushes the semicircular guide rail, and the semicircular guide rail pushes the connecting seat through the screw. The connecting seat slides relative to the mounting seat through the sliding rod, and the connecting seat compresses the first spring. At this time, the semicircular guide rail is in an oscillating state to cope with the situation where the chain link block is stuck; in order to make all the second rollers close to the semicircular guide rail, the bottom surface of the second groove and the inner wall of the arc groove, the rotating column is driven to rotate, and the rotating column drives the screw to rotate. The screw rotates in the threaded hole, and the screw moves out of the threaded hole or into the threaded hole. The screw drives the connecting seat to move, and the distance between the connecting seat and the mounting seat is adjusted. The elastic force of the first spring on the connecting seat is adjusted so that the semicircular guide rail tightens the chain link block, reducing the second roller from being close to the outer surface of the guide rail. 3. The pressure applied by the link block to the semicircular guide rail has a maximum and a minimum value. Exceeding the maximum value will increase metal fatigue and wear of the various metal components. Falling below the minimum value will cause the second roller on the connecting block to not fit tightly against the guide rail, resulting in looseness of the link block and inaccurate transmission. When the pressure is between the maximum and minimum values, the link block transmits accurately and reduces metal fatigue and wear. Therefore, a pressure sensor is provided on the side of the connecting seat. The pressure sensor transmits the pressure signal applied by the first spring to the drive motor, which controls the distance between the connecting seat and the mounting seat to adjust the elastic force of the first spring, so that the pressure applied by the link block to the semicircular guide rail is within the maximum and minimum range. 4. Split the linear guide rail into multiple short guide rails to facilitate rail transportation; there can be multiple increase or decrease sections, and multiple increase or decrease sections can be spliced ​​to form a longer guide rail; when splicing short guide rails, insert the plug rod into the slot, pass the guide rod through the guide ring, screw the nut onto the guide rod, and gradually tighten the nut. The guide rod drives the tightening ring closer to the guide ring. The tightening ring gradually pushes the two semicircular guide rings closer through the chamfered surface until the two semicircular guide rings fit together, achieving precise splicing between the short guide rails. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of the annular guide rail according to an embodiment of the present application; Figure 2 This is a partial structural diagram of the annular guide rail according to an embodiment of the present application; Figure 3 This is a schematic structural diagram of a rotating seat according to an embodiment of the present application; Figure 4 This is a schematic structural diagram of a semicircular guide rail according to an embodiment of the present application; Figure 5 Schematic diagram of the cross-sectional structure of the semicircular guide rail according to an embodiment of the present application; Figure 6 Schematic diagram of the cross-sectional structure of the rotating column of the embodiment of the present application; Figure 7 is a structural schematic diagram of a driving mechanism of an embodiment of the present application; Figure 8 is a sectional structural schematic diagram of a shell of an embodiment of the present application; Figure 9 is a structural schematic diagram of a linear guide rail of an embodiment of the present application; Figure 10 is Figure 9 is an enlarged structural schematic diagram of part A in FIG. 6; Figure 11 is an exploded structural schematic diagram of a bolt and a guide rod of an embodiment of the present application; Figure 12 is a sectional structural schematic diagram of a short guide rail of an embodiment of the present application; Figure 13 is Figure 12 is an enlarged structural schematic diagram of part B in FIG. 6.

[0017] Mark explanation: 1, linear guide rail; 11, first groove; 12, second groove; 121, let-out port; 13, linear protruding plate; 131, transition plate; 14, support seat; 141, support plate; 15, mounting seat; 151, sliding rod; 152, rotating port; 153, mounting hole; 16, connecting seat; 17, screw rod; 171, rotating column; 1711, spline groove; 172, first spring; 18, plug-in groove; 19, support block; 191, let-out groove; 2, semicircular guide rail; 21, third groove; 22, semicircular protruding plate; 23, threaded hole; 24, butt joint block; 241, plug-in plate; 3, rotating seat; 31, rotating disc; 311, arc-shaped clamping groove; 32, annular protruding plate; 4, chain link block; 41, hinged shaft; 42, first roller; 43, second roller; 5, driving mechanism; 51, shell; 511, positioning hole; 52, driving motor; 53, worm; 54, worm gear; 55, rotating seat; 551, rotating hole; 56, spline shaft; 57, push-pull assembly; 571, push-pull rod; 572, baffle; 573, second spring; 574, threaded rod; 58, pressure sensor; 59, U-shaped support frame; 61, first butt joint section; 62, second butt joint section; 63, increasing and decreasing section; 64, plug-in rod; 65, plug-in groove; 66, circular groove; 71, guide ring; 72, guide rod; 73, tightening ring; 74, nut; 75, bolt. DETAILED DESCRIPTION

[0018] The following will be described in detail in combination with the accompanying Figures 1 to 13 The present application will be further described in detail.

[0019] An embodiment of the present application discloses a chain link type annular guide rail for precise conveying. Referring to Figure 1-13The chain link type annular guide rail comprises linear guide rails 1, semicircular guide rails 2, rotating seats 3 and chain link blocks 4. The linear guide rails 1 are provided in two, and the two linear guide rails 1 are arranged in parallel. The semicircular guide rails 2 are installed at the ends of the two linear guide rails 1, and the sides of the two linear guide rails 1 away from each other are smoothly connected with the arc surfaces of the semicircular guide rails 2. The rotating seat 3 is rotatably installed at one end of the two linear guide rails 1 away from the semicircular guide rail 2, and the top and bottom circumferential surfaces of the rotating seat 3 are connected with rotating discs 31. The chain link blocks 4 are provided in multiple, and the multiple chain link blocks 4 are evenly arranged around the outer circumferential surface of the guide rail formed by the linear guide rails 1, the semicircular guide rails 2 and the rotating seat 3, and the chain link blocks 4 are used for loading materials. Two adjacent chain link blocks 4 are connected through a hinged shaft 41, and the inner side surface of the chain link block 4 is rotatably connected with two first rollers 42 arranged in an upper and lower manner through a rotating shaft. The top and bottom ends of the hinged shaft 41 are rotatably connected with second rollers 43. The outer side surface of the linear guide rail 1 is provided with a second groove 12 for the second rollers 43 to roll, and the bottom surface of the second groove 12 is provided with a first groove 11. The bottom surface of the first groove 11 is connected with a linear protruding plate 13 for the two first rollers 42 to roll. The arc surface of the semicircular guide rail 2 is provided with a third groove 21, and the bottom surface of the third groove 21 is connected with a semicircular protruding plate 22 for the two first rollers 42 to roll. The second rollers 43 roll on the circumferential surface of the semicircular guide rail 2. The circumferential surface of the rotating seat 3 is connected with an annular protruding plate 32 for the two first rollers 42 to roll. The linear protruding plate 13, the semicircular protruding plate 22 and the annular protruding plate 32 are collectively referred to as protruding plates. One of the first rollers 42 rolls on the top surface of the protruding plate, and the other first roller 42 rolls on the bottom surface of the protruding plate. The circumferential surface of the two rotating discs 31 is provided with an arc clamping groove 311 for the second rollers 43 at the two ends of the hinged shaft 41 to enter. The rotating seat 3 is driven by a servo motor.

[0020] When it is necessary to convey materials, the motor drives the rotating seat 3 to rotate, the rotating seat 3 drives the rotating disc 31 to rotate, the two rotating discs 31 drive the second rollers 43 to move through the arc clamping groove 311, the second rollers 43 roll on the bottom surface of the first groove 11 and the arc surface of the semicircular guide rail 2, and the first rollers 42 roll on the top surface and the bottom surface of the protruding plate, so that the transmission of the chain link block 4 can be realized. Since there is no elastic action between the chain link blocks 4, the chain link blocks 4 can load materials with greater weight. The connecting block is tightly attached to the guide rail through the first rollers 42 and the second rollers 43, the transmission of the chain link block 4 is more stable and has higher precision, the positioning accuracy of the chain link block 4 controlled by the servo motor is higher, and it is suitable for high-precision machining of materials.

[0021] The ends of the two linear guide rails 1 close to the rotating seat 3 are connected with support seats 14, the top and bottom surfaces of the support seats 14 are connected with support plates 141, and the top and bottom of the rotating seat 3 are rotatably connected in the two support plates 141.

[0022] Two straight guide rails 1 are connected with the end portions of the semicircular guide rail 2, and a mounting seat 15 is arranged between the end portions of the semicircular guide rail 2. Two slide rods 151 are arranged in the mounting seat 15 and slide horizontally. Two connecting seats 16 are connected with the end portions of the semicircular guide rail 2 and are connected to the side of the semicircular guide rail 2. A screw rod 17 is rotatably connected in the connecting seat 16 through a bearing. Threaded holes 23 are arranged on the side of the semicircular guide rail 2 and are threadedly connected with one end of the screw rod 17. The other end of the screw rod 17 penetrates into the mounting seat 15 and is connected with a rotating column 171. Rotating openings 152 are arranged in the mounting seat 15 and are used for the rotation of the rotating column 171 and the screw rod 17. A first spring 172 is arranged outside the screw rod 17 and is tightly pressed on the mutually close sides of the mounting seat 15 and the connecting seat 16.

[0023] Since the chain link blocks 4 are rigidly connected, the chain link blocks 4 will be suddenly stuck when passing through the circular arc track and the rotating seat 3. Therefore, the semicircular guide rail 2 is designed to be movable. The chain link block 4 pushes the semicircular guide rail 2. The semicircular guide rail 2 pushes the connecting seat 16 through the screw rod 17. The connecting seat 16 slides relative to the mounting seat 15 through the slide rod 151. The connecting seat 16 compresses the first spring 172. At this time, the semicircular guide rail 2 is in an oscillating state to cope with the situation that the chain link block 4 is stuck. In order to make all the second rollers 43 tightly adhere to the inner wall of the semicircular guide rail 2, the bottom surface of the second groove 12 and the arc-shaped clamping groove 311, the rotating column 171 is driven to rotate. The rotating column 171 drives the screw rod 17 to rotate. The screw rod 17 rotates in the threaded hole 23. The screw rod 17 moves outward or inward of the threaded hole 23. The screw rod 17 drives the connecting seat 16 to move. The distance between the connecting seat 16 and the mounting seat 15 is adjusted. The elastic force of the first spring 172 on the connecting seat 16 is adjusted. The semicircular guide rail 2 tightens the chain link block 4. The second roller 43 is tightly adhered to the outer surface of the guide rail.

[0024] The second rollers 43 at the ends of the hinged shaft 41 are two. The two second rollers 43 close to each other on the hinged shaft 41 are clamped with the arc-shaped clamping groove 311. The end portion of the second groove 12 is provided with a gap opening 121 for the rotating disc 31 to enter. The end surface of the straight protruding plate 13 close to the annular protruding plate 32 is inclined and close to the peripheral surface of the annular protruding plate 32. The semicircular guide rail 2 is connected with the butt joint block 24 inserted into the end portion of the straight guide rail 1 at both ends of the side. The top and bottom of the end surface of the butt joint block 24 away from the semicircular guide rail 2 are connected with the insertion plate 241. The two second rollers 43 away from each other on the hinged shaft 41 roll on the outer side surface of the insertion plate 241. The end portion of the straight guide rail 1 is provided with two insertion grooves 18 for the two insertion plates 241 to enter. The two ends of the semicircular protruding plate 22 extend to the outer side surface of the butt joint block 24. The straight protruding plate 13 close to the end surface of the semicircular protruding plate 22 is connected with the transition plate 131. The transition plate 131 is located on the outer side surface of the semicircular protruding plate.

[0025] When the first roller 42 and the second roller 43 roll, when the first roller 42 rolls between the linear convex plate 13 and the annular convex plate 32, the two ends of the first roller 42 roll on the linear convex plate 13 and the annular convex plate 32 respectively, so that the rolling position of the first roller 42 is exchanged, the first roller 42 will not fall into the air, and the rolling stability of the first roller 42 is improved; when the first roller 42 rolls between the linear convex plate 13 and the semicircular convex plate 22, the two ends of the first roller 42 roll on the transition plate 131 and the semicircular convex plate 22 respectively, so that the rolling position of the first roller 42 is exchanged, the first roller 42 will not fall into the air, and the rolling stability of the first roller 42 is improved; when the second roller 43 rolls between the linear guide rail 1 and the semicircular guide rail 2, one of the second rollers 43 rolls on On the bottom surface of the second groove 12, another second roller 43 rolls on the outer surface of the plug-in plate 241, so that when the rolling position of the second roller 43 is exchanged, the second roller 43 always keeps in contact with the guide rail; when the second roller 43 exchanges positions on the rotating disk 31 and the linear guide rail 1, one of the second rollers 43 is in the arc-shaped slot 311, and the other second roller 43 rolls in the second groove 12, so that when the second roller 43 exchanges positions, it can immediately contact the exchanged guide rail, thereby improving the stability of the chain link block 4; the roller can roll stably between the semicircular guide rail 2, the linear guide rail 1 and the rotating seat 3, and the transmission is more accurate; when the semicircular guide rail 2 moves relative to the linear guide rail 1, the end of the semicircular arc convex plate 22 moves relative to the transition plate 131, and the plug-in plate 241 moves relative to the plug-in slot 18.

[0026] The mounting base 15 is provided with a mounting hole 153 in communication with the top and bottom surfaces of the mounting base 15, the mounting hole 153 is connected to the end of the rotating port 152 away from the connecting base 16, and a driving mechanism 5 for driving the rotating column 171 to rotate is provided in the mounting hole 153; the driving mechanism 5 includes a housing 51, a driving motor 52, a worm 53, a worm wheel 54, a rotating base 55, a spline shaft 56 and a push-pull assembly 57; the housing 51 is installed in the mounting hole 153, the driving motor 52 is installed on the top surface of the housing 51, and both ends of the worm 53 are installed in the housing 51 and one end is coaxially connected On the output shaft of the driving motor 52; both ends of the rotating seat 55 are rotatably connected to the housing 51 through bearings, and the rotating seat 55 is coaxial with the rotating column 171; the worm gear 54 is coaxially connected to the outer peripheral surface of the rotating seat 55, and the worm gear 54 is engaged with the worm 53; the spline shaft 56 is slidably connected to the end of the rotating seat 55 near the connecting seat 16 along the axis of the rotating seat 55, and the end face of the rotating column 171 is provided with a spline groove 1711 for the spline shaft 56 to enter; the push-pull assembly 57 is installed on the mounting seat 15, and the push-pull assembly 57 is used to drive the spline shaft 56 to move along the axis direction of the rotating seat 55.

[0027] A pressure sensor 58 is installed on the side of the mounting seat 15 close to the connecting seat 16. The end of the first spring 172 close to the mounting seat 15 is pressed against the surface of the pressure sensor 58. The pressure sensor 58 is used to transmit signals to the terminal, and the terminal controls the drive motor 52.

[0028] The push-pull assembly 57 includes a push-pull rod 571, a baffle 572, a second spring 573 and a threaded rod 574. A rotating hole 551 is provided at the end of the rotating seat 55 away from the spline shaft 56. The push-pull rod 571 is arranged in the rotating hole 551. One end of the push-pull rod 571 passes through the bottom of the rotating hole 551 and is coaxially connected to the end face of the spline shaft 56; the baffle 572 is connected to the end of the push-pull rod 571 away from the spline shaft 56 and slides on the inner wall of the rotating hole 551. The second spring 573 is sleeved on the outer circumference of the push-pull rod 571. The second spring 573 is pressed against the baffle 572 and the bottom surface of the rotating hole 551; the threaded rod 574 is threadedly connected to the mounting seat 15. One end of the threaded rod 574 extends from the side of the mounting seat 15 away from the connecting seat 16 and is connected to a hexagonal nut. The other end of the threaded rod 574 extends into the mounting hole 153 and fits the side of the baffle 572.

[0029] Two U-shaped support frames 59 are connected to the inner wall of the mounting hole 153 , with both ends of the U-shaped support frames 59 facing vertically upward. A positioning hole 511 for the two U-shaped support frames 59 to pass through is provided on the bottom surface of the housing 51 .

[0030] When it is necessary to drive the rotating column 171 to rotate, align the positioning hole 511 of the shell 51 with the U-shaped support frame 59, and install the shell 51 on the U-shaped support frame 59. At this time, the spline shaft 56 is aligned with the spline groove 1711, driving the threaded rod 574 to rotate, and the threaded rod 574 extends into the mounting hole 153. The end of the threaded rod 574 pushes the baffle 572, and the baffle 572 compresses the second spring 573 and pushes the push-pull rod 571. The push-pull rod 571 pushes the spline shaft 56, and the spline shaft 56 enters the spline groove 1711; the driving motor 52 drives the worm 53 to rotate, the worm 53 drives the worm wheel 54 to rotate, the worm wheel 54 drives the rotating seat 55 to rotate, and the rotating seat 55 drives the spline shaft 56 to rotate, and the spline shaft 56 can drive the rotating column 171 to rotate.

[0031] The pressure applied by the link block 4 to the semicircular guide rail 2 has a maximum value and a minimum value. If it exceeds the maximum value, the metal fatigue and wear of each metal component will be aggravated. If it is lower than the minimum value, the second roller 43 on the connecting block will not fit tightly enough with the guide rail, the link block 4 will be relatively loose, and the transmission will be inaccurate. When the pressure is between the maximum and minimum values, the link block 4 can transmit accurately and the metal fatigue and wear will be small. Therefore, a pressure sensor 58 is provided on the side of the connecting seat 16. The pressure sensor 58 transmits the pressure signal applied by the first spring 172 to the drive motor 52. The drive motor 52 controls the distance between the connecting seat 16 and the mounting seat 15 to adjust the elastic force of the first spring 172 so that the pressure applied by the link block 4 to the semicircular guide rail 2 is within the maximum and minimum value range.

[0032] During the transportation of the annular guide rail, the annular guide rail is disassembled into various components, and the driving mechanism 5 also needs to be removed, and the threaded rod 574 is screwed into the mounting seat 15. The second spring 573 pushes the baffle 572, and the baffle 572 drives the push-pull plate, and the push-pull plate drives the spline shaft 56 to be retracted into the rotating seat 55. At this time, the shell 51 can be lifted and removed from the U-shaped support frame 59 for subsequent storage and transportation.

[0033] The linear guide rail 1 is formed by splicing together multiple short guide rails. The short guide rail closest to the rotating seat 3 is the first docking section 61, the short guide rail closest to the semicircular guide rail 2 is the second docking section 62, and the short guide rail located between the first docking section 61 and the second docking section 62 is the increase-and-decrease section 63; one end face of the increase-and-decrease section 63 is connected to two insertion rods 64, and the other end face of the increase-and-decrease section 63 is connected to two slots 65. The end face of the first docking section 61 close to the increase-and-decrease section 63 is provided with two slots 65 for the two insertion rods 64 to enter, and the end face of the second docking section 62 close to the increase-and-decrease section 63 is provided with two insertion rods 64 inserted into the two slots 65; in the first groove A circular groove 66 is provided at the joint of the bottom surface of 11, and the circular groove 66 is divided into two halves; a trumpet-shaped guide ring 71 is connected to the bottom surface of the circular groove 66, and the outer circumference of the guide ring 71 is chamfered, and the guide ring 71 is divided into two semicircular guide rings 71; a guide rod 72 is slidably provided on the inner circumference of the guide ring 71, one end of the guide rod 72 passes through the short guide rail, and the other end of the guide rod 72 extends out of the guide ring 71 and is connected to a tightening ring 73 on the end circumference, the inner circumference of the tightening ring 73 is chamfered, and the inner circumference of the tightening ring 73 fits the outer circumference of the guide ring 71, and a nut 74 is threadedly connected to the end of the guide rod 72 away from the guide ring 71.

[0034] The linear guide rail 1 is split into multiple short guide rails, facilitating guide rail transportation; the number of the lengthening and shortening sections 63 can be multiple, and the multiple lengthening and shortening sections 63 are spliced to form a longer guide rail; when splicing the short guide rails, the insertion rod 64 is inserted into the insertion slot 65, the guide rod 72 is inserted into the guide ring 71, the nut 74 is screwed onto the guide rod 72, the nut 74 is gradually tightened, the guide rod 72 drives the tightening ring 73 to move close to the guide ring 71, the tightening ring 73 gradually pushes the two semicircular guide rings 71 close to each other through the chamfered surface, until the two semicircular guide rings 71 are attached, and the short guide rails are precisely spliced.

[0035] The bolt 75 is inserted into the guide rod 72, the bolt 75 is screwed into the support block 19, and the nut of the bolt 75 is pressed against the end surface of the tightening ring 73.

[0036] After the short guide rails are spliced, the bolt 75 is inserted into the guide rod 72, and the bolt 75 is screwed into the support block 19, and the nut of the bolt 75 is pressed against the end surface of the tightening ring 73, further stabilizing the attachment of the tightening ring 73 and the guide ring 71.

[0037] The implementation principle of the chain link type annular guide rail for precise conveying is as follows: when conveying materials, the motor drives the rotating seat 3 to rotate, the rotating seat 3 drives the rotating disc 31 to rotate, the two rotating discs 31 drive the second roller 43 to move through the arc-shaped clamping slot 311, the second roller 43 rolls on the bottom surface of the first recess 11 and the arc surface of the semicircular guide rail 2, and the first roller 42 rolls on the top surface and the bottom surface of the convex plate, so that the transmission of the chain link block 4 is realized. Since there is no elastic action between the chain link blocks 4, the chain link blocks 4 can carry larger weight materials, the connecting block is tightly attached to the guide rail through the first roller 42 and the second roller 43, the transmission of the chain link block 4 is more stable and has higher precision, the positioning accuracy of the chain link block 4 controlled by the servo motor is higher, and the chain link block 4 is suitable for high-precision machining of materials.

[0038] The above are preferred embodiments of the present application, and do not limit the protection scope of the present application, therefore: any equivalent changes made on the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A chain link annular guide rail for precision conveying, characterized by: The invention comprises a linear guide rail (1), a semicircular guide rail (2), a rotating seat (3) and a chain link block (4); two linear guide rails (1) are provided, and the semicircular guide rails (2) are installed at the ends of the two linear guide rails (1); the rotating seat (3) is rotatably installed on one end of the two linear guide rails (1) away from the semicircular guide rail (2), and the top and bottom circumferences of the rotating seat (3) are both connected to a rotating disk (31); a plurality of chain link blocks (4) are provided, and the plurality of chain link blocks (4) are evenly arranged around the outer circumference of the guide rail formed by the linear guide rail (1), the semicircular guide rail (2) and the rotating seat (3); Two adjacent chain link blocks (4) are connected via a hinge shaft (41); the inner side surface of the chain link block (4) is rotatably connected to two first rollers (42) arranged up and down via a rotating shaft; the top and bottom ends of the hinge shaft (41) are both rotatably connected to second rollers (43); convex plates for the first rollers (42) to roll are arranged around the linear guide rail (1), the semicircular guide rail (2), and the outer side surface of the rotating seat (3); arc-shaped slots (311) for the second rollers (43) at both ends of the hinge shaft (41) to enter are arranged on the circumference of the two rotating disks (31); and the rotating seat (3) is driven by a motor.

2. A chain link type annular guide rail for precision conveying according to claim 1, characterized in that: The outer side surface of the linear guide rail (1) is provided with a second groove (12) for the second roller (43) to roll, the bottom surface of the second groove (12) is provided with a first groove (11), and the bottom surface of the first groove (11) is connected to a linear convex plate (13) for the two first rollers (42) to roll; the arc surface of the semicircular guide rail (2) is provided with a third groove (21), the bottom surface of the third groove (21) is connected to a semicircular arc convex plate (22) for the two first rollers (42) to roll, and the second roller (43) rolls on the circumferential surface of the semicircular guide rail (2); the circumferential surface of the rotating seat (3) is connected to an annular convex plate (32) for the two first rollers (42) to roll.

3. The chain link type annular guide rail for precision conveying according to claim 1, characterized in that: A mounting seat (15) is connected between the ends of the two linear guide rails (1) close to the semicircular guide rail (2), and two slide bars (151) are horizontally slidably provided in the mounting seat (15). The ends of the two slide bars (151) close to the semicircular guide rail (2) are connected to a connecting seat (16), and the connecting seat (16) is connected to the side of the semicircular guide rail (2); a screw rod (17) is rotatably connected in the connecting seat (16) through a bearing, and a threaded hole (23) for threaded connection of one end of the screw rod (17) is provided on the side of the semicircular track, and the other end of the screw rod (17) is passed through the mounting seat (15) and the end is connected to a rotating column (171), and a rotating port (152) for rotating the rotating column (171) and the screw rod (17) is provided in the mounting seat (15); a first spring (172) is provided on the outer sleeve of the screw rod (17), and the two ends of the first spring (172) are respectively pressed against the side surfaces of the mounting seat (15) and the connecting seat (16) close to each other.

4. The chain link type annular guide rail for precision conveying according to claim 2, characterized in that: There are two second rollers (43) at each end of the hinge shaft (41), and the two second rollers (43) on the hinge shaft (41) are connected to the arc-shaped slot (311). The end of the second groove (12) is provided with a clearance opening (121) for the rotating disk (31) to enter. The end surface of the linear convex plate (13) close to the annular convex plate (32) is inclined and close to the circumference of the annular convex plate (32); both ends of the side of the semicircular guide rail (2) are connected with a docking block (24) inserted into the end of the linear guide rail (1), and the docking block (24) is away from the semicircular The top and bottom of the end face of the linear guide rail (2) are both connected with a plug-in plate (241); two second rollers (43) on the hinge shaft (41) that are away from each other roll on the outer side face of the plug-in plate (241); and two plug-in slots (18) for the two plug-in plates (241) to enter are provided at the end face of the linear guide rail (1); both ends of the semicircular convex plate (22) extend to the outer side face of the docking block (24); the linear convex plate (13) is connected with a transition plate (131) near the end face of the semicircular convex plate (22); and the transition plate (131) is located on the outer side face of the semicircular plate.

5. The chain link type annular guide rail for precision conveying according to claim 3, characterized in that: A mounting hole (153) communicating with the top and bottom surfaces of the mounting seat (15) is provided in the mounting seat (15); the mounting hole (153) is connected to an end of the rotating port (152) away from the connecting seat (16); and a driving mechanism (5) for driving the rotating column (171) to rotate is provided in the mounting hole (153).

6. The chain link type annular guide rail for precision conveying according to claim 5, characterized in that: The driving mechanism (5) comprises a housing (51), a driving motor (52), a worm (53), a worm wheel (54), a rotating seat (55), a spline shaft (56) and a push-pull assembly (57); the housing (51) is installed in the mounting hole (153), the driving motor (52) is installed on the top surface of the housing (51), both ends of the worm (53) are installed in the housing (51) and one end is coaxially connected to the output shaft of the driving motor (52); both ends of the rotating seat (55) are rotatably connected to the housing (51) through bearings, and the rotating seat (55) and the rotating shaft are connected to each other. The column (171) is coaxial; the worm wheel (54) is coaxially connected to the outer peripheral surface of the rotating seat (55), and the worm wheel (54) is engaged with the worm (53); the spline shaft (56) is slidably connected to the end of the rotating seat (55) near the connecting seat (16) along the axis of the rotating seat (55), and the end surface of the rotating column (171) is provided with a spline groove (1711) for the spline shaft (56) to enter; the push-pull assembly (57) is installed on the mounting seat (15), and the push-pull assembly (57) is used to drive the spline shaft (56) to move along the axis direction of the rotating seat (55).

7. The chain link type annular guide rail for precision conveying according to claim 6, characterized in that: A pressure sensor (58) is installed on the side of the mounting seat (15) close to the connecting seat (16), and the end of the first spring (172) close to the mounting seat (15) is pressed against the surface of the pressure sensor (58).

8. The chain link type annular guide rail for precision conveying according to claim 6, characterized in that: The push-pull assembly (57) includes a push-pull rod (571), a baffle (572), a second spring (573) and a threaded rod (574). The end of the rotating seat (55) away from the spline shaft (56) is provided with a rotating hole (551). The push-pull rod (571) is arranged in the rotating hole (551). One end of the push-pull rod (571) passes through the bottom of the rotating hole (551) and is coaxially connected to the end face of the spline shaft (56). The baffle (572) is connected to the end of the push-pull rod (571) away from the spline shaft (56). And slide on the inner wall of the rotating hole (551), the second spring (573) is sleeved on the outer peripheral surface of the push-pull rod (571), and the second spring (573) is pressed against the baffle (572) and the bottom surface of the rotating hole (551); the threaded rod (574) is threadedly connected to the mounting seat (15), one end of the threaded rod (574) extends from the side of the mounting seat (15) away from the connecting seat (16) and is connected to a hexagonal nut, and the other end of the threaded rod (574) extends into the mounting hole (153) and fits the side of the baffle (572).

9. The chain link type annular guide rail for precision conveying according to claim 2, characterized in that: The linear guide rail (1) is formed by splicing a plurality of short guide rails, wherein the short guide rail closest to the rotating seat (3) is the first docking section (61), the short guide rail closest to the semicircular guide rail (2) is the second docking section (62), and the short guide rail located between the first docking section (61) and the second docking section (62) is the increasing and decreasing section (63); one end face of the increasing and decreasing section (63) is connected to two insertion rods (64), and the other end face of the increasing and decreasing section (63) is connected to two slots (65); the end face of the first docking section (61) close to the increasing and decreasing section (63) is provided with two slots (65) for the two insertion rods (64) to enter, and the end face of the second docking section (62) close to the increasing and decreasing section (63) is provided with two insertion rods (64) inserted into the two slots (65); in the first groove (11) A circular groove (66) is provided at the joint of the bottom surface, and the circular groove (66) is divided into two halves; a trumpet-shaped guide ring (71) is connected to the bottom surface of the circular groove (66), and the outer peripheral surface of the guide ring (71) is chamfered, and the guide ring (71) is divided into two semicircular guide rings (71); a guide rod (72) is slidably provided on the inner peripheral surface of the guide ring (71), one end of the guide rod (72) passes through the short guide rail, and the other end of the guide rod (72) extends out of the guide ring (71) and is connected to a tightening ring (73) on the end peripheral surface, the inner peripheral surface of the tightening ring (73) is chamfered, and the inner peripheral surface of the tightening ring (73) is attached to the outer peripheral surface of the guide ring (71), and the end of the guide rod (72) away from the guide ring (71) is threadedly connected to a nut (74).

10. The chain link type annular guide rail for precision conveying according to claim 9, characterized in that: A bolt (75) is inserted into the guide rod (72), and the end of the bolt (75) passes through the guide rod (72). A plurality of support blocks (19) are provided between the two linear guide rails (1). The support block (19) is located at the joint of the short guide rails. The end face of the support block (19) is fitted to the side face of the short guide rail. The bolt (75) is threadedly connected to the end face of the support block (19). The end face of the support block (19) is provided with a clearance groove (191) for the bolt (75) and the guide rod (72) to enter. The nut of the bolt (75) is pressed against the end face of the tightening ring (73).

Images