A precision differential circulation track structure

Abstract

The present invention provides a precision differential circulation track structure, which makes the utilization rate of the carrier high, and has a simple structure and high positioning accuracy, and is suitable for precision assembly lines. It includes a first synchronous conveyor belt and a second synchronous conveyor belt, the first synchronous conveyor belt and the second synchronous conveyor belt are the same internal and external double-tooth synchronous conveyor belts, the first synchronous conveyor belt is arranged at equal intervals along the conveying direction at the first station, the second station, ..., the Nth station, wherein N is a natural number greater than or equal to 3, and the value of N is specifically set according to the number of stations of the production line, the frames of the first synchronous conveyor belt and the second synchronous conveyor belt are connected to form a whole through a bottom plate, the first synchronous conveyor belt is provided with a first precision slide track at the relative inner side corresponding to the position of the second station to the (N-1)th station, and the second synchronous conveyor belt is provided with a second precision slide track at the relative inner side corresponding to the position of the second station to the (N-1)th station.

Description

Technical Field

[0001] The invention relates to the technical field of circulating tracks, in particular to a precision differential circulating track structure. Background Art

[0002] In order to realize the carrier reflow function, the existing technology is generally a chain plate line or a circulating track. The above two track structures both require the carriers to be evenly arranged on the entire closed conveyor line, which makes the utilization rate of the carriers relatively low. In addition, the positioning accuracy of the chain plate line is low and is not suitable for precise assembly lines. Summary of the invention

[0003] In view of the above problems, the present invention provides a precision differential circulation track structure, which has high utilization rate of the carrier, simple structure, high positioning accuracy and is suitable for precision assembly lines.

[0004] A precision differential circulation track structure, characterized in that: it includes synchronous conveyor belts arranged in parallel on both sides, specifically a first synchronous conveyor belt and a second synchronous conveyor belt, the first synchronous conveyor belt and the second synchronous conveyor belt are identical inner and outer double-tooth synchronous conveyor belts, the first synchronous conveyor belt is provided with a first station, a second station, ..., an Nth station at equal intervals in sequence along the conveying direction, wherein N is a natural number greater than or equal to 3, and the value of N is specifically set according to the number of stations of the production line, the frames of the first synchronous conveyor belt and the second synchronous conveyor belt are connected as a whole through a bottom plate, and the relative inner side of the first synchronous conveyor belt A first precision slide track is arranged at the position corresponding to the second station to the (N-1)th station, a second precision slide track is arranged at the opposite inner side of the second synchronous conveyor belt corresponding to the position from the second station to the (N-1)th station, the first precision slide track and the second precision slide track have the same length and are arranged in parallel at the same height, the first precision slide track is arranged parallel to the first synchronous conveyor belt, a first pneumatic slide is arranged in the lateral area of ​​the first station corresponding to the first synchronous conveyor belt and the second synchronous conveyor belt, a first auxiliary slide track is arranged on the first pneumatic slide, and the first pneumatic slide The first auxiliary slide rail is driven by the platform to move laterally along the first synchronous conveyor belt and the second synchronous conveyor belt corresponding to the position of the first station, and the second pneumatic slide is arranged in the lateral area of ​​the Nth station corresponding to the first synchronous conveyor belt and the second synchronous conveyor belt. The second pneumatic slide is provided with a second auxiliary slide rail. The second pneumatic slide drives the second auxiliary slide rail to move laterally along the first synchronous conveyor belt and the second synchronous conveyor belt corresponding to the position of the Nth station. The first auxiliary slide rail is arranged at the corresponding end of the first precision slide rail or the second precision slide rail in the stopped state, and the second auxiliary slide The rails are arranged at the corresponding ends of the first precision slide rail or the second precision slide rail when the rails are in the stopped state, the first synchronous conveyor belt is connected to the first drive motor, and the first drive motor drives the first synchronous conveyor belt, the second synchronous conveyor belt is connected to the second drive motor, and the second drive motor drives the second synchronous conveyor belt; the bottoms of both side edges of the corresponding carrier are provided with meshing tooth grooves that are shaped like the conveying teeth of the first synchronous conveyor belt and the second synchronous conveyor belt, and the center plane between the meshing tooth grooves on both sides is used to support the first precision slide rail, the second precision slide rail, the first auxiliary slide rail or the second auxiliary slide rail.

[0005] It is further characterized by:

[0006] A corresponding group of connecting guide rods are respectively arranged between the respective frames of the first synchronous conveyor belt and the second synchronous conveyor belt at positions corresponding to the second to (N-1)th stations, each group of connecting guide rods is provided with a precise positioning protrusion, the base of the precise positioning protrusion is fixedly connected to the output end of an independent alignment cylinder, each alignment cylinder is respectively fixedly arranged at a corresponding position of the inner wall of the frame corresponding to the first synchronous conveyor belt, and concave notch grooves are respectively arranged on both sides of the carrier, and the precise positioning protrusion is inserted into the concave notch groove under the drive of the alignment cylinder to ensure that the position of the workpiece at the corresponding station is stable and reliable;

[0007] A first transverse bar is provided at the rear end of the conveying upper surface of the first synchronous conveyor belt and the second synchronous conveyor belt relative to the first station, and a second transverse bar is provided at the front end of the conveying upper surface of the first synchronous conveyor belt and the second synchronous conveyor belt relative to the Nth station to ensure that the carrier will not derail.

[0008] After adopting the present invention, the stepping distance of the first synchronous conveyor belt is A, then the interval of each station is A, the total effective conveying length of the first conveyor belt is N*A, and the stepping distance of the second synchronous conveyor belt is N*A / 2, two independent driving motors provide different speed requirements for the circulating track, the carrier on the Nth station is driven to the second synchronous conveyor belt by the second pneumatic slide, the first synchronous conveyor belt drives each carrier except the Nth station to step forward, the second synchronous conveyor belt sends the stand-by carrier in the middle position to the position corresponding to the first station, the first starting slide transports the carrier on the second synchronous conveyor belt at the first station to the first station position of the first synchronous conveyor belt, only a small number of intermediate transfer carriers need to be arranged on the second synchronous conveyor belt, and because the power is provided by the toothed engagement between the synchronous belt and the carrier, there is no restriction on the fixing mechanism, so when the number of carriers needs to be increased or introduced, they can be directly added and the speed can be changed; it makes the utilization rate of the carrier high, and has a simple structure and high positioning accuracy, which is suitable for precise assembly lines. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0010] Figure 2 It is a schematic diagram of the top view structure of the present invention;

[0011] Figure 3 It is a schematic diagram of the structure of the vehicle from a bottom view;

[0012] The names corresponding to the serial numbers in the figure are as follows:

[0013] The first synchronous conveyor belt 1, the second synchronous conveyor belt 2, the bottom plate 3, the first precision slide track 4, the second precision slide track 5, the first pneumatic slide 6, the first auxiliary slide track 7, the second pneumatic slide 8, the second auxiliary slide track 9, the first drive motor 10, the second drive motor 11, the carrier 12, the meshing tooth groove 13, the center plane 14, the connecting guide rod 15, the precise positioning protrusion 16, the alignment cylinder 17, the concave notch groove 18, the first transverse gear rod 19, and the second transverse gear rod 20. DETAILED DESCRIPTION

[0014] A precision differential circulating track structure, see Figure 1-Figure 3:It includes synchronous conveyor belts arranged in parallel on both sides, specifically a first synchronous conveyor belt 1 and a second synchronous conveyor belt 2. The first synchronous conveyor belt 1 and the second synchronous conveyor belt 2 are identical inner and outer double-tooth synchronous conveyor belts. The first synchronous conveyor belt 1 is provided with a first station, a second station, ..., an Nth station at equal intervals in sequence along the conveying direction, wherein N is a natural number greater than or equal to 3, and the value of N is specifically set according to the number of stations of the production line. The frames of the first synchronous conveyor belt 1 and the second synchronous conveyor belt 2 are connected as a whole through a bottom plate 3. The relative inner side of the first synchronous conveyor belt 1 corresponds to the positions of the second station to the (N-1)th station. A first precision slide rail 4 is arranged at the position, and a second precision slide rail 5 is arranged at the position corresponding to the second station to the (N-1)th station on the opposite inner side of the second synchronous conveyor belt 2. The first precision slide rail 4 and the second precision slide rail 5 have the same length and are arranged in parallel and at the same height. The first precision slide rail 4 is arranged parallel to the first synchronous conveyor belt 1. A first pneumatic slide 6 is arranged in the transverse area of ​​the first station corresponding to the first synchronous conveyor belt 1 and the second synchronous conveyor belt 2. A first auxiliary slide rail 7 is arranged on the first pneumatic slide 6. The first pneumatic slide 6 drives the first auxiliary slide rail 7 to move transversely along the first synchronous conveyor belt 1. The second synchronous conveyor 2 moves with the position corresponding to the first station, and the second pneumatic slide 8 is set in the transverse area corresponding to the first synchronous conveyor 1 and the second synchronous conveyor 2 of the Nth station. The second pneumatic slide 8 is provided with a second auxiliary slide track 9. The second pneumatic slide 8 drives the second auxiliary slide track 9 to move transversely along the first synchronous conveyor 1 and the second synchronous conveyor 2 corresponding to the position of the Nth station. The first auxiliary slide track 7 is arranged at the corresponding end of the first precision slide track 4 or the second precision slide track 5 in the stopped state, and the second auxiliary slide track 9 is arranged at the corresponding end of the first precision slide track 4 or the second precision slide track 5 in the stopped state. The corresponding ends of the track 4 or the second precision slide track 5 are arranged, the first synchronous conveyor belt 1 is connected to the first drive motor 10, the first drive motor 10 drives the first synchronous conveyor belt 1, the second synchronous conveyor belt 2 is connected to the second drive motor 11, and the second drive motor 11 drives the second synchronous conveyor belt 2; the bottoms of both sides of the corresponding carrier 12 are provided with meshing tooth grooves 13 that are shaped like the conveying teeth of the first synchronous conveyor belt 1 and the second synchronous conveyor belt 2, and the center plane 14 between the meshing tooth grooves 13 on both sides is used to support the first precision slide track 4, the second precision slide track 5, the first auxiliary slide track 7 or the second auxiliary slide track 9.

[0015] A corresponding group of connecting guide rods 15 are respectively arranged between the respective frames of the first synchronous conveyor belt 1 and the second synchronous conveyor belt 2 at positions corresponding to the second to (N-1)th stations, and each group of connecting guide rods 15 is provided with a precise positioning protrusion 16, and the base of the precise positioning protrusion 16 is fixedly connected to the output end of an independent alignment cylinder 17, and each alignment cylinder 17 is respectively fixedly arranged at a corresponding position of the inner wall of the frame corresponding to the first synchronous conveyor belt 1, and concave notch grooves 18 are respectively arranged on both sides of the carrier 12, and the precise positioning protrusion 16 is inserted into the concave notch groove 18 under the drive of the alignment cylinder 17 to ensure that the position of the workpiece at the corresponding station is stable and reliable;

[0016] A first transverse bar 19 is provided at the rear end of the first station on the conveying upper surface of the first synchronous conveyor belt 1 and the second synchronous conveyor belt 2, and a second transverse bar 20 is provided at the front end of the conveying upper surface of the first synchronous conveyor belt 1 and the second synchronous conveyor belt 2 relative to the Nth station to ensure that the carrier will not derail.

[0017] Its working principle is as follows: the stepping distance of the first synchronous conveyor belt is A, then the interval between each station is A, the total effective conveying length of the first conveyor belt is N*A, and the stepping distance of the second synchronous conveyor belt is N*A / 2. Two independent drive motors provide different speed requirements for the circulating track. The carrier on the Nth station is driven to the second synchronous conveyor belt by the second pneumatic slide. The first synchronous conveyor belt drives each carrier except the Nth station to step forward. The second synchronous conveyor belt sends the stand-by carrier in the middle position to the position corresponding to the first station. The first starting slide transports the carrier on the second synchronous conveyor belt at the first station to the first station position of the first synchronous conveyor belt. Only a small number of intermediate transfer vehicles need to be arranged on the second synchronous conveyor belt.

[0018] In a specific embodiment, the value of N is 6. The servo motor of the second synchronous conveyor belt moves 660 mm each time to move the carrier from the rightmost end to the middle position, and the servo motor of the first synchronous conveyor belt moves 220 mm each time, that is, it moves between each station. The two sets of power provide different speed requirements for the circulating track.

[0019] The first synchronous conveyor belt and the second synchronous conveyor belt are both double-sided tooth synchronous belts. There are contoured meshing grooves on both the front and rear sides of the bottom of the carrier. After moving forward and backward into position, the meshing grooves automatically mesh with the teeth on the synchronous belt. Because the power is provided by the tooth meshing between the synchronous belt and the carrier, there is no restriction on the fixing mechanism. Therefore, when the number of carriers needs to be increased or introduced, they can be added directly and the speed can be changed. This makes the utilization rate of the carrier high, and the structure is simple and the positioning accuracy is high, which is suitable for precision assembly lines.

[0020] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0021] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A precision differential circulating track structure, characterized in that: It includes synchronous conveyor belts arranged in parallel on both sides of the column, specifically a first synchronous conveyor belt and a second synchronous conveyor belt, the first synchronous conveyor belt and the second synchronous conveyor belt are the same internal and external double-tooth synchronous conveyor belts, the first synchronous conveyor belt is arranged with a first station, a second station, ..., an Nth station at equal intervals in sequence along the conveying direction, wherein N is a natural number greater than or equal to 3, and the value of N is specifically set according to the number of stations of the production line, the frames of the first synchronous conveyor belt and the second synchronous conveyor belt are connected as a whole through a bottom plate, and the relative inner side of the first synchronous conveyor belt corresponds to the second station to the (N-)th station. A first precision slide track is arranged at the position of the 1st workstation, a second precision slide track is arranged at the position corresponding to the 2nd workstation to the (N-1)th workstation on the opposite inner side of the second synchronous conveyor belt, the first precision slide track and the second precision slide track are of the same length and are arranged in parallel and at the same height, the first precision slide track is arranged parallel to the first synchronous conveyor belt, a first pneumatic slide is arranged in the lateral area of ​​the first workstation corresponding to the first synchronous conveyor belt and the second synchronous conveyor belt, a first auxiliary slide track is arranged on the first pneumatic slide, and the first pneumatic slide drives the first auxiliary slide The track moves transversely along the first synchronous conveyor belt and the second synchronous conveyor belt corresponding to the position of the first station, and a second pneumatic slide is arranged in the transverse area of ​​the Nth station corresponding to the first synchronous conveyor belt and the second synchronous conveyor belt, and a second auxiliary slide track is arranged on the second pneumatic slide, and the second pneumatic slide drives the second auxiliary slide track to move transversely along the first synchronous conveyor belt and the second synchronous conveyor belt corresponding to the position of the Nth station, and the first auxiliary slide track is arranged at the corresponding end of the first precision slide track or the second precision slide track in a stopped state, and the second auxiliary slide track is arranged at the corresponding end of the first precision slide track or the second precision slide track in a stopped state, the first synchronous conveyor belt is connected to the first drive motor, and the first drive motor drives the first synchronous conveyor belt, and the second synchronous conveyor belt is connected to the second drive motor, and the second drive motor drives the second synchronous conveyor belt; the bottom of both sides of the corresponding carrier are provided with meshing tooth grooves that imitate the conveying teeth of the first synchronous conveyor belt and the second synchronous conveyor belt, and the center plane between the meshing tooth grooves on both sides is used to support the first precision slide track, the second precision slide track, the first auxiliary slide track or the second auxiliary slide track.

2. A precision differential circulating track structure as claimed in claim 1, characterized in that: Corresponding groups of connecting guide rods are respectively arranged between the frames of the first synchronous conveyor belt and the second synchronous conveyor belt at positions corresponding to the second to (N-1)th stations, and each group of connecting guide rods is provided with a precise positioning protrusion, and the base of the precise positioning protrusion is fixedly connected to the output end of an independent alignment cylinder, and each alignment cylinder is respectively fixed to a corresponding position of the inner wall of the frame corresponding to the first synchronous conveyor belt, and concave notch grooves are respectively arranged on both sides of the carrier, and the precise positioning protrusions are inserted into the concave notch grooves under the drive of the alignment cylinder.

3. A precision differential circulating track structure as claimed in claim 1, characterized in that: A first transverse bar is provided at the rear end of the conveying upper surface of the first synchronous conveyor belt and the second synchronous conveyor belt relative to the first station, and a second transverse bar is provided at the front end of the conveying upper surface of the first synchronous conveyor belt and the second synchronous conveyor belt relative to the Nth station.

Images