Rotating conveyor and welding transfer mechanism

Abstract

The present invention discloses a rotating conveying device and a welding transfer mechanism, wherein the rotating conveying device comprises a machine base, a rotating table and a plurality of clamping components, wherein the rotating table is rotatably mounted to the upper end of the machine base along an axis extending in the vertical direction, and has a circular movable track, wherein the rotating table is formed with a plurality of mounting positions arranged at intervals along the circumference of the rotating table, wherein the plurality of clamping components are respectively arranged on the plurality of mounting positions, and each of the clamping components comprises a plurality of first positioning parts and a plurality of second positioning parts, wherein the plurality of first positioning parts are spaced in the radial direction of the movable track, and the plurality of second positioning parts are spaced in the vertical direction, wherein one of the first positioning parts and one of the second positioning parts are used to clamp the front top assembly together. The first positioning part and the second positioning part at the appropriate position are selected for cooperative clamping to ensure stability, and the transport clamping of the front top assembly of different vehicle models can be adapted through one device, thereby reducing the occupation of the site.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical equipment, and in particular to a rotary conveying device and a welding transfer mechanism. Background Art

[0002] There are many types of commercial vehicle cabs, which can be divided into engineering vehicles, tractors, loaders, etc. and multiple sub-quality categories according to market demand. The corresponding cab structures are also quite different, but in terms of the supply demand of the flexible welding assembly main line, the front roof assembly of each model is usually loaded on a single workstation. It is necessary to set up multiple placement tables according to the structure of the front roof to load parts near the assembly robot at the workstation. Therefore, the area where the tables are arranged is larger, and the assembly robot needs to be equipped with a walking axis to ensure that it can grab all the parts on the tables. Summary of the invention

[0003] The main purpose of the present invention is to provide a rotary conveying device and a welding transfer mechanism, aiming to solve the current problems of large space occupation and poor versatility in assembly and transportation.

[0004] To achieve the above object, the present invention provides a rotary conveying device, comprising:

[0005] Machine base;

[0006] A rotating table is rotatably mounted to the upper end of the machine base along an axis extending in the vertical direction, and has a circular moving track. The rotating table is provided with a plurality of mounting positions spaced apart along the circumference of the rotating table; and,

[0007] A plurality of clamping assemblies are respectively arranged on the plurality of mounting positions, each of the clamping assemblies comprises a plurality of first positioning portions and a plurality of second positioning portions, the plurality of first positioning portions are spaced apart along the radial direction of the movable track, the plurality of second positioning portions are spaced apart along the up-down direction, one of the first positioning portions and one of the second positioning portions are used to jointly clamp the front top assembly.

[0008] Optionally, each of the clamping assemblies further comprises:

[0009] A first support arm is fixedly mounted on the rotating platform and extends in an up-down direction; and

[0010] a second support arm extending in a radial direction of the movable track, an end of the second support arm being fixed to a bottom of the first support arm;

[0011] A plurality of the first positioning portions are arranged at intervals on the second supporting arm, and a plurality of the second positioning portions are arranged at intervals in the up-down direction on the side surface of the first supporting arm facing the second supporting arm.

[0012] Optionally, each of the clamping assemblies further comprises a clamping block, which is disposed on the first support arm, and the upper end surface of the clamping block is provided with a plurality of clamping grooves spaced apart along its length direction, and the plurality of clamping grooves are spaced apart from and staggered with the plurality of first positioning portions.

[0013] Optionally, each of the clamping assemblies further comprises a plurality of auxiliary positioning blocks, which are spaced apart along the extension direction of the second support arm and are slidably installed by means of a slide groove and a slide block.

[0014] Optionally, the first support arm and the second support arm are connected to form a support group, and two of the support groups are arranged at intervals to jointly clamp the front top assembly.

[0015] Optionally, each of the second positioning parts includes:

[0016] a base extending radially along the active track; and

[0017] A plurality of positioning bent plates are arranged on the base at intervals in the vertical direction, and each of the positioning bent plates is bent upward toward the end of the edge of the rotating table;

[0018] The front top assembly can be selectively snap-fitted with one of the positioning bent plates.

[0019] Optionally, the plurality of first positioning portions include a lifting positioning portion close to the center of the rotating table, and along the up-down direction, the top end of the lifting positioning portion is arranged higher than the top ends of the other first positioning portions;

[0020] The lifting positioning portion is clamped with one of the positioning bent plates in the second positioning portion located below.

[0021] Optionally, the multiple first positioning parts also include a supporting positioning part, which corresponds to the second positioning part located above, and the supporting positioning part includes positioning pins and gas magnets that are spaced apart on the base and extend in the up and down directions, and the positioning pins and the gas magnets are both located on the side of the multiple positioning bent plates facing the edge of the turntable and are arranged lower than the multiple positioning bent plates.

[0022] Optionally, the rotating table is provided with a plurality of partition plates spaced apart along the circumference of the rotating table, an installation space is defined between two adjacent partition plates, and the plurality of installation positions are correspondingly located in the plurality of installation spaces; and / or,

[0023] At least part of the first positioning portion is a detent cylinder.

[0024] The present invention also provides a welding transfer mechanism, comprising:

[0025] a rotating conveyor; and

[0026] The transfer robot is spaced apart from the rotary conveyor device and can correspond to one of the installation positions as the rotary table of the rotary conveyor device rotates, so as to grab and transfer the front top assembly of the parts on the installation position.

[0027] In the technical solution of the present invention, a plurality of installation positions are correspondingly formed on the rotating table, and each of the installation positions can be used as a manual loading position or a mechanical retrieval position. Specifically, an operator clamps and installs a larger or multiple smaller front top assembly parts at the installation position corresponding to the loading position, and limits the position on the horizontal plane by relying on the first positioning part, and limits the position in the upper and lower directions by relying on the second positioning part. A reasonable placement angle is selected according to the actual size of the front top assembly part, so as to select the first positioning part and the second positioning part in the appropriate position for cooperative clamping, and limit the front top assembly part. The joint clamping in two directions ensures stability, and then the rotating table rotates to transfer the loaded front top assembly part to the mechanical retrieval position to complete the rotation. The corresponding front top assembly parts on each clamping component can be of the same specification or of different specifications, so that one device can be adapted to the transportation and clamping of front top assembly parts of different models, with strong versatility and reduced site occupancy. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0029] Figure 1 A three-dimensional schematic diagram of a rotary conveying device (an installation method) provided by the present invention;

[0030] Figure 2 for Figure 1 A three-dimensional schematic diagram of the rotating conveyor device (another installation method);

[0031] Figure 3 for Figure 1 A three-dimensional schematic diagram of the clamping assembly;

[0032] Figure 4 for Figure 3 A magnified schematic diagram of the local A in the middle;

[0033] Figure 5 for Figure 3 A side view schematic diagram of

[0034] Figure 6 for Figure 1A schematic diagram of the cooperation between the middle clamping assembly and a front top assembly (one specification);

[0035] Figure 7 for Figure 1 Schematic diagram of the middle clamping assembly and a front top assembly (another specification);

[0036] Figure 8 for Figure 1 Schematic diagram of the cooperation between the middle clamping assembly and the two front top assembly parts.

[0037] Description of Figure Numbers:

[0038] Label name Label name 100 Rotating conveyor 3132 Gas magnet 1 Base 32 Second positioning part 2 Rotating table 321 Base 21 Divider 322 Positioning bending plate 2a Installation position 33 First support arm 3 Clamping components 34 Second support arm 31 First positioning part 35 Card-mounted block 311 Pinning cylinder 351 Card slot 312 Lifting and positioning unit 36 Auxiliary positioning block 313 Support positioning part 200 Front top assembly 3131 Positioning pin

[0039] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] It should be noted that if a directional indication is involved in the embodiment of the present invention, the directional indication is only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0042] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0043] Automobile body welding was originally a labor-intensive operation, but with the increasing cost of labor, it is currently rapidly moving towards automation. However, considering the cost of automation investment, welding automation is more likely to be carried out using a process solution that combines manual assembly and robot assembly and welding operations.

[0044] There are many types of commercial vehicle cabs, which can be divided into engineering vehicles, tractors, loaders, etc. and multiple sub-quality categories according to market demand. The corresponding cab structures are also quite different, but in terms of the supply demand of the flexible welding assembly main line, the front roof assembly of each model is usually loaded on a single workstation. It is necessary to set up multiple placement tables according to the structure of the front roof to load parts near the assembly robot at the workstation. Therefore, the area where the tables are arranged is larger, and the assembly robot needs to be equipped with a walking axis to ensure that it can grab all the parts on the tables.

[0045] In view of this, the present invention provides a rotary conveying device that can be shared by multiple vehicle models and reduces the space occupied by assembly and the complaint cost. Figures 1 to 8 This is an embodiment of the rotary conveying device provided by the present invention.

[0046] Please refer to Figures 1 to 3 The rotating conveying device 100 includes a base 1, a rotating table 2 and a plurality of clamping assemblies 3. The rotating table 2 is rotatably mounted to the upper end of the base 1 along an axis extending in the vertical direction and has a circular movable track. The rotating table 2 is formed with a plurality of mounting positions 2a arranged at intervals along the circumference of the rotating table 2. The plurality of clamping assemblies 3 are respectively arranged on the plurality of mounting positions 2a. Each of the clamping assemblies 3 includes a plurality of first positioning portions 31 and a plurality of second positioning portions 32. The plurality of first positioning portions 31 are spaced along the radial direction of the movable track, and the plurality of second positioning portions 32 are spaced along the vertical direction. One of the first positioning portions 31 and one of the second positioning portions 32 are used to clamp the front top assembly together.

[0047] In the technical solution of the present invention, a plurality of installation positions 2a are correspondingly formed on the rotating table 2, and each of the installation positions 2a can be used as a manual loading position or a mechanical retrieval position. Specifically, the operator clamps and installs a larger or multiple smaller front top assembly parts 200 at the installation position 2a corresponding to the loading position, and limits the position on the horizontal plane by a first positioning portion 31, and limits the position in the upper and lower directions by a second positioning portion 32. A reasonable placement angle is selected according to the actual size of the front top assembly part 200, so that the first positioning portion 31 and the second positioning portion 32 at appropriate positions are selected for cooperative clamping, and the front top assembly part 200 is limited. The common clamping in two directions ensures stability, and then the rotating table 2 rotates to transfer the loaded front top assembly part 200 to the mechanical retrieval position to complete the rotation. The corresponding front top assembly parts 200 on each of the clamping components 3 can be of the same specification or of different specifications, so that one device can be adapted to the transportation and clamping of the front top assembly parts 200 of different models, with strong versatility and reduced site occupancy.

[0048] In order to facilitate the separation between the installation positions 2a and the protection of the front top assembly 200 during installation, the turntable 2 is provided with a plurality of partition plates 21 arranged at intervals along the circumference of the turntable 2, and an installation space is defined between two adjacent partition plates 21. The plurality of installation positions 2a are correspondingly located in the plurality of installation spaces. It can be understood that the partition plates 21 only need to be enclosed and combined on the outside, and the ends of the partition plates 21 close to the center of the turntable 2 do not need to be connected together. Each installation space is open, and is only enclosed and protected in the rotation direction of the turntable 2.

[0049] The present invention does not limit the specific form of the first positioning part 31. In this embodiment, at least part of the first positioning part 31 is a pin cylinder 311. The pin cylinder 311 has a pin as a whole. The pin has a cavity inside and an opening on the side. The cylinder drives a hook-shaped component to move in the opening, so as to achieve the effect of hooking and pressing. It can be understood that the structures of multiple first positioning parts 31 can be the same or different. In other embodiments, magnetic attraction, buckle, clamping claw and other structures can also be used as positioning parts.

[0050] It should be noted that the above two related technical features can be set at the same time or one of them can be set selectively. In this embodiment, they are set at the same time, which has a better effect.

[0051] For further information, please refer to Figure 3 and Figure 5 Each of the clamping assemblies 3 further includes a first support arm 33 and a second support arm 34. The first support arm 33 is fixedly mounted on the rotating table 2 and extends in the vertical direction. The second support arm 34 extends in the radial direction of the active track. The end of the second support arm 34 is fixed to the bottom of the first support arm 33. A plurality of first positioning portions 31 are arranged at intervals on the second support arm 34. A plurality of second positioning portions 32 are arranged at intervals on the side surface of the first support arm 33 facing the second support arm 34 in the vertical direction. In this embodiment, two second positioning portions 32 are arranged on the first support arm 33, and three first positioning portions 31 are arranged at intervals on the second support arm 34. The three first positioning portions 31 are all arranged as a detent cylinder 311. The first support arm 33 and the second support arm 34 are arranged at an angle of 90°, thereby forming a positioning fit in two vertical directions. The second support arm 34 is connected to the rotating table 2 and the first support arm 33 at the same time, rather than being suspended from the rotating table 2.

[0052] In order to realize the positioning of the front top assembly 200 during clamping, please refer to Figure 4Each of the clamping components 3 also includes a clamping block 35, which is arranged on the first supporting arm 33. The upper end surface of the clamping block 35 is provided with a plurality of clamping grooves 351 at intervals along its length direction. The plurality of clamping grooves 351 are spaced and staggered from the plurality of first positioning portions 31. Each of the clamping grooves 351 is V-shaped as a whole and has an inclined inner wall surface. When clamping the front top assembly 200, the size is first matched to select the clamping groove 351 in a suitable position, and then the front top assembly 200 is limited by the clamping groove 351, so that the first positioning portion 31 and the second positioning portion 32 are convenient to cooperate with the corresponding holes, grooves, and step surfaces on the front top assembly 200 to complete the clamping action, so as to realize the positioning guidance during installation and improve the stability during rotation transportation.

[0053] Moreover, considering that the front top assembly 200 itself has a certain thickness, each of the clamping components 3 further includes a plurality of auxiliary positioning blocks 36, which are spaced along the extension direction of the second support arm 34 and are slidably installed by means of a slide groove and a slider. The upper end surface of each of the auxiliary positioning blocks 36 is used to abut against the corresponding part of the front top assembly 200 to form a support. By adjusting the positions of the plurality of auxiliary positioning blocks 36, the adaptation of the front top assembly 200 of different specifications is achieved. Specifically, a slide groove extending along the length direction of the second support arm 34 is provided, and each of the auxiliary positioning blocks 36 is slidably installed in the slide groove by connecting each bent plate, which not only ensures the guiding property of the sliding, but also facilitates assembly. That is, during the clamping process of the front top assembly 200, the position of the auxiliary positioning block 36 does not need to be completely aligned with the clamping groove 351 and the first positioning portion 31, and the number may also be different, and only needs to be adaptively adjusted according to the actual situation.

[0054] According to market demand, in different models such as engineering vehicles, tractors, and loaders, the corresponding cab structures are also quite different. Therefore, the front top assembly 200 has a large size span according to the detailed classification. In view of this, in this embodiment, the first support arm 33 and the second support arm 34 are connected to form a support group, and two support groups are arranged at intervals to clamp the front top assembly 200. That is, each first support arm 33 and the second support arm 34 form an L-shaped structure, and the two L-shaped structures and the positioning parts thereon together form a clamping assembly 3. When clamping, in the two support groups, the first positioning parts 31 at the same position cooperate with the lower part of the front top assembly 200, and the second positioning parts 32 at the same position cooperate with the upper part of the front top assembly 200.

[0055] The present invention does not limit the specific form of the second positioning part 32. In order to adapt to more vehicle structure and provide more clamping positions, in this embodiment, each of the second positioning parts 32 includes a base 321 and a plurality of positioning bent plates 322. The base 321 extends radially along the active track. The plurality of positioning bent plates 322 are arranged on the base 321 at intervals in the vertical direction. Each of the positioning bent plates 322 is bent upward toward the end of the edge of the rotating table 2. The front top assembly 200 can be selectively engaged with one of the positioning bent plates 322. It can be understood that each of the positioning bent plates 322 can be aligned in the vertical direction or staggered. The main purpose is to adapt to the size of the front top assembly 200 of different specifications. In this way, the front top assembly 200 can be selectively engaged with a plurality of second positioning parts 32. At the same time, in each second positioning part 32 that meets the height requirement, one of the positioning bent plates 322 can be selected for engagement, thereby improving the stability of the clamping and the degree of adaptation.

[0056] It should be noted that, in the present embodiment, three positioning bent plates 322 are arranged in each of the second positioning portions 32. The two upper positioning bent plates 322 are spaced apart in the up-down direction and arranged flush with each other. The bending degrees of the two positioning bent plates 322 can be the same or different. The lower positioning bent plate 322 is staggered, and its bending amplitude can also be set to be the same as or different from that of other positioning bent plates 322.

[0057] Specifically, the plurality of first positioning parts 31 include a lifting positioning part 312 near the center of the rotating table 2. In the up-down direction, the top of the lifting positioning part 312 is higher than the top of the other first positioning parts 31. The lifting positioning part 312 is clamped with one of the positioning bent plates 322 in the second positioning parts 32 located below. Among the plurality of first positioning parts 31, the lifting positioning part 312 and the second positioning part 32 have the shortest distance in the horizontal direction, which is suitable for the front top assembly 200 with a smaller size. This type of front top assembly 200 is uniformly clamped with the lifting positioning part 312. According to the difference in appearance, it can be selected to cooperate with the positioning bent plates 322 of different heights. It can be understood that the lifting positioning part 312 is a detent cylinder 311, which can be set with different specifications to increase the overall height, and can also be made higher than other first positioning parts 31 arranged on the first support arm 33 by changing the installation reference surface.

[0058] It should be noted that, in this embodiment, the three first positioning portions 31 on the first support arm 33 are all detent cylinders 311 .

[0059] When the size of the front top assembly 200 is relatively small, multiple front top assembly 200 can be clamped on the same clamping assembly 3. In this embodiment, the multiple first positioning parts 31 also include a support positioning part 313. The support positioning part 313 corresponds to the second positioning part 32 located above. The support positioning part 313 includes positioning pins 3131 and gas magnets 3132 extending in the up-down direction and spaced apart on the base 321. The positioning pins 3131 and the gas magnets 3132 are both located on the side of the multiple positioning bent plates 322 facing the edge of the rotating table 2 and are arranged lower than the multiple positioning bent plates 322. The positioning pins 3131 and the gas magnets 3132 are combined to replace the pin cylinder 311 to achieve the clamping and fixing effect. Please refer to Figure 3 and Figure 8 Two front top assemblies 200 are spaced apart in the upper and lower directions. The specifications of the two front top assemblies 200 may be the same or different. Specifically, the upper front top assembly 200 is clamped by a positioning bent plate 322, a positioning pin 3131 and an air magnet 3132, and the lower front top assembly 200 is clamped by a positioning bent plate 322 and a hook pin cylinder 311. This is in consideration of the different spatial orientations and the differences in the placement space and wiring layout. Therefore, the positioning pin 3131 and the air magnet 3132 are used in this embodiment.

[0060] Please refer to Figure 6 to Figure 7 For a front top assembly 200 with a larger size, two detent cylinders 311 at the bottom close to the edge of the rotating table 2 and with the same height are generally matched with the second positioning portion 32 at the top.

[0061] In order to facilitate the separation between the installation positions 2a and the protection of the front top assembly 200 during installation, the turntable 2 is provided with a plurality of partition plates 21 arranged at intervals along the circumference of the turntable 2, and an installation space is defined between two adjacent partition plates 21. The plurality of installation positions 2a are correspondingly located in the plurality of installation spaces. It can be understood that the partition plates 21 only need to be enclosed and combined on the outside, and the ends of the partition plates 21 close to the center of the turntable 2 do not need to be connected together. Each installation space is open, and is only enclosed and protected in the rotation direction of the turntable 2.

[0062] The present invention does not limit the specific form of the first positioning part 31. In this embodiment, at least part of the first positioning part 31 is a pinning cylinder 311. The pinning cylinder 311 has a pin as a whole. The pin has a cavity inside and an opening on the side. The cylinder drives a hook-shaped component to move in the opening, so as to achieve the effect of hooking and pressing. It can be understood that the structures of multiple first positioning parts 31 can be the same or different. In other embodiments, magnetic attraction, buckle, clamping claw and other structures can also be used as positioning parts.

[0063] It should be noted that the above two related technical features can be set at the same time or one of them can be set selectively. In this embodiment, they are set at the same time, which has a better effect.

[0064] Specifically, the rotary conveying device 100 of this embodiment can avoid space according to the structural classification of the front top assembly 200. Each of the clamping components 3 is assembled by multiple parts, with a simple structure and small space occupation. This embodiment is arranged according to the front top assembly structure to arrange multiple positioning parts into a 3-row 2-layer structure, that is, there are 3 rows of first positioning parts 31 on the horizontal plane, and 2 layers of second positioning parts 32 are formed in the upper and lower directions. Each of the first positioning parts 31 adopts a structure in which a hook pin cylinder 311 or a common pin and a gas magnet 3132 cooperate: each of the second positioning parts 32 adopts a fixed hook holding part or a clamping claw structure. Provide multiple clamping positions for selection, strong versatility.

[0065] The present invention also provides a welding transfer mechanism, including the above-mentioned rotating conveying device 100. The welding transfer mechanism includes all the technical features of the above-mentioned rotating conveying device 100, and therefore, also has the technical effects brought by all the above-mentioned technical features, which will not be repeated here one by one.

[0066] Specifically, the welding transfer mechanism also includes a transfer robot, which is spaced apart from the rotating conveying device 100 and can correspond to one of the installation positions 2a as the rotating table 2 of the rotating conveying device 100 rotates, so as to grab and transfer the front top assembly 200 on the installation position 2a.

[0067] In this embodiment, the welding transfer structure includes two manual loading positions and one mechanical picking position which are arranged on the outside of the rotating table 2 and spaced apart along the circumferential direction. Correspondingly, three spaced partition plates 21 are provided on the rotating table 2 to form three spaced installation positions 2a. By rotating the rotating table 2 forward or reverse, the clamping assembly 3 with the front top assembly 200 can correspond to the mechanical picking position, so that the transfer robot at the mechanical picking position can automatically pick up and transfer. The empty clamping assembly 3 can correspond to one of the manual loading positions to facilitate the operator to load materials.

[0068] It is understandable that in order to ensure that the loading area can be shared, it is necessary to unify the positions of the two positioning holes that cooperate when clamping each part, so that the fixture design is feasible and it is also convenient for the robot gripper to pick up and avoid.

[0069] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A rotary conveying device for transporting a plurality of front roof assemblies, characterized in that: include: Machine base; A rotating table is rotatably mounted to the upper end of the machine base along an axis extending in the vertical direction, and has a circular moving track. The rotating table is provided with a plurality of mounting positions spaced apart along the circumference of the rotating table; and, A plurality of clamping assemblies, respectively disposed on the plurality of mounting positions, each of the clamping assemblies comprising a plurality of first positioning portions and a plurality of second positioning portions, the plurality of first positioning portions being spaced apart along the radial direction of the active track, the plurality of second positioning portions being spaced apart along the vertical direction, wherein one of the first positioning portions and one of the second positioning portions are used to clamp the front top assembly together; Each of the clamping assemblies further comprises: A first support arm is fixedly mounted on the rotating platform and extends in an up-down direction; and A second support arm extends along the radial direction of the movable track, and an end of the second support arm is fixed to the bottom of the first support arm; A plurality of the first positioning portions are arranged at intervals on the second support arm, and a plurality of the second positioning portions are arranged at intervals in the up-down direction on the side surface of the first support arm facing the second support arm; Each of the clamping assemblies further comprises a clamping block, which is arranged on the first supporting arm. The upper end surface of the clamping block is provided with a plurality of clamping grooves at intervals along its length direction, and the plurality of clamping grooves are spaced apart from and staggered with the plurality of first positioning portions.

2. The rotary conveying device according to claim 1, characterized in that: Each of the clamping assemblies further comprises a plurality of auxiliary positioning blocks, which are spaced apart along the extension direction of the second support arm and are slidably installed by means of a sliding groove and a sliding block.

3. The rotary conveying device according to claim 1, characterized in that: The first support arm and the second support arm are connected to form a support group, and two of the support groups are arranged at intervals to jointly clamp the front top assembly.

4. The rotary conveying device according to claim 1, characterized in that: Each of the second positioning parts comprises: a base extending radially along the active track; and A plurality of positioning bent plates are arranged on the base at intervals in the vertical direction, and each of the positioning bent plates is bent upward toward the end of the edge of the rotating table; The front top assembly can be selectively snap-fitted with one of the positioning bent plates.

5. The rotary conveying device according to claim 4, characterized in that: The plurality of first positioning parts include a lifting positioning part close to the center of the rotating table, and the top of the lifting positioning part is arranged higher than the tops of the other first positioning parts along the up-down direction; The lifting positioning portion is clamped with one of the positioning bent plates in the second positioning portion located below.

6. The rotary conveying device according to claim 4, characterized in that: The multiple first positioning parts also include a supporting positioning part, which corresponds to the second positioning part located above, and the supporting positioning part includes positioning pins and gas magnets that are spaced apart on the base and extend in the up and down directions, and the positioning pins and the gas magnets are both located on the side of the multiple positioning bent plates facing the edge of the turntable and are arranged lower than the multiple positioning bent plates.

7. The rotary conveying device according to claim 1, characterized in that: The rotating table is provided with a plurality of partition plates spaced apart along the circumference of the rotating table, an installation space is defined between two adjacent partition plates, and the plurality of installation positions are correspondingly located in the plurality of installation spaces; and / or, At least part of the first positioning portion is a detent cylinder.

8. A welding transfer mechanism, characterized in that: include: The rotary conveying device according to any one of claims 1 to 7; as well as, The transfer robot is spaced apart from the rotary conveyor device and can correspond to one of the installation positions as the rotary table of the rotary conveyor device rotates, so as to grab and transfer the front top assembly of the parts on the installation position.

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