A delivery centering device and method thereof

Abstract

The present application relates to the field of centering equipment, and discloses a conveying centering device, which comprises a Y-axis centering mechanism arranged on an X-axis centering mechanism, one side of the X-axis centering mechanism is provided with a conveying mechanism, the Y-axis centering mechanism comprises a top plate, two groups of oppositely distributed guide grooves are formed in the top plate, a movable clamping jaw and a fixed clamping jaw are respectively arranged in the two groups of guide grooves, the movable clamping jaw is close to the front side of the Y-axis centering mechanism, and the movable clamping jaw can be turned to one side of the fixed clamping jaw, so that the top of the movable clamping jaw is hidden in the guide groove, the workpiece is conveyed to the upper side of the Y-axis centering mechanism through the conveying mechanism, and the movable clamping jaw on the front side of the workpiece can be turned to one side of the fixed clamping jaw under the push of the workpiece, so that the top of the fixed clamping jaw can be hidden in the guide groove, the structure can achieve the purpose of simplifying the mechanism, improve the space utilization, and reduce the corresponding cost.

Description

Technical Field

[0001] This invention relates to the field of centering tooling, and more specifically to a conveying centering device and method thereof. Background Technology

[0002] In automated manufacturing, high positional accuracy is generally required for workpieces, such as in robotic welding. Therefore, before production operations begin, workpieces must be aligned, meaning they need to be aligned in both width and length directions to ensure they are neatly placed on the workstation. In existing technologies, a belt conveyor mechanism is typically used to transport the workpiece to the alignment position, and then the clamping jaws of the alignment mechanism act on the workpiece's length and width to complete the alignment operation.

[0003] Since the workpiece needs to be aligned in both length and width, interference will occur between the workpiece and the clamping jaws of the alignment mechanism during the process of the workpiece being transported to the alignment mechanism by the conveyor. In order to avoid interference accidents, the conventional solution is to increase the vertical movement freedom of the clamping jaws. When the workpiece arrives, the clamping jaws of the nearest workpiece move to outside its bottom or top surface. After the workpiece enters the alignment area, the clamping jaws are reset to perform the alignment operation.

[0004] While the above method solves the problem of interference between the workpiece and the gripper, it increases the complexity of the centering mechanism, occupies more space, and thus increases the corresponding maintenance and space occupancy costs. Summary of the Invention

[0005] The problem to be solved by the present invention is to provide a conveying and centering device in which, during the process of the workpiece being conveyed to the Y-axis centering mechanism, the workpiece first contacts the moving gripper and is pushed to flip to one side of the fixed gripper until it is hidden in the guide groove. After the workpiece enters the centering area, the moving gripper resets and performs a centering operation on the workpiece, so as to simplify the mechanism, improve space utilization, and reduce the corresponding cost.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] A conveying and centering device includes a Y-axis centering mechanism disposed on an X-axis centering mechanism, and a conveying mechanism for conveying a workpiece to the top of the Y-axis centering mechanism is disposed on one side of the X-axis centering mechanism. The Y-axis centering mechanism includes a top plate disposed above the X-axis centering mechanism, and two sets of oppositely distributed guide grooves are provided on the top plate.

[0008] The two sets of guide grooves are respectively equipped with a movable gripper and a fixed gripper, both of which can move horizontally towards the middle position of the top plate synchronously along the Y-axis.

[0009] The movable gripper is located near the front side of the Y-axis centering mechanism, and the top of the movable gripper can be hidden in the guide groove by flipping it toward one side of the fixed gripper.

[0010] In a preferred embodiment of the present invention, the Y-axis centering mechanism further includes two connecting plates disposed opposite to each other below the top plate, and both connecting plates can move horizontally towards the middle position of the top plate synchronously along the Y-axis direction;

[0011] The fixed gripper is fixedly connected to one of the connecting plates, and the movable gripper is rotatably connected to the other connecting plate through a support, and the support is fixedly connected to the connecting plate.

[0012] The movable gripper includes a clamping part, which is rotatably connected to the support via a third rotating shaft. One end of the clamping part can pass through the guide groove, and the other end is connected to a counterweight. A stop bar is provided below the third rotating shaft to block the clamping part.

[0013] In a preferred embodiment of the present invention, a second connecting rod is rotatably connected to the center position of the bottom of the top plate via a second rotating shaft. The two ends of the second connecting rod are equidistant from the second rotating shaft and are rotatably connected to a second swing rod.

[0014] The end of the second swing arm is rotatably connected to the connecting plate, and the connecting plate is slidably connected to the top plate along the Y-axis; a second telescopic component is also fixedly installed at the bottom of the top plate, and the output end of the second telescopic component is connected to the connecting plate.

[0015] In a preferred embodiment of the present invention, there are two second telescopic components, and the two second telescopic components are distributed opposite to each other and in parallel.

[0016] In a preferred embodiment of the present invention, the conveying mechanism includes a conveying bracket, and the top of the conveying bracket is provided with two synchronously rotating buffer chains. Both buffer chains are parallel to the Y-axis direction and extend to both sides of the Y-axis centering mechanism.

[0017] Both sides of the Y-axis centering mechanism are provided with lifting mechanisms, and the lifting mechanisms can lift the workpiece away from the conveying mechanism.

[0018] In a preferred embodiment of the present invention, the lifting mechanism includes a base and a lifting plate. The base is fixedly installed on the X-axis centering mechanism, a support rod is vertically connected to the base, and the lifting plate is slidably connected to the support rod.

[0019] The base is also provided with a third telescopic component. The output end of the third telescopic component is connected to a hinge bracket. The hinge bracket is coaxially rotatably connected to a first hinge rod and a second hinge rod, which are respectively rotatably connected to the lifting plate and the base.

[0020] In a preferred embodiment of the present invention, the base is further provided with a limiting component that blocks the hinge bracket, and the top of the lifting plate is provided with an adhesive strip.

[0021] In a preferred embodiment of the present invention, the limiting component includes a limiting seat fixedly installed on the base, a limiting rod fixedly installed on the limiting seat, and when the first hinge rod and the second hinge rod are on the same straight line, the connection between the two can abut against the end of the limiting rod.

[0022] In a preferred embodiment of the present invention, the X-axis centering mechanism includes a support plate that supports the Y-axis centering mechanism. Two X-axis grippers are arranged opposite to each other on the support plate, and both X-axis grippers can move horizontally along the X-axis to the middle position of the top plate simultaneously.

[0023] A method for conveying alignment includes the following steps:

[0024] (1) Place the workpiece on the conveyor mechanism, which will transport the workpiece to the centering area;

[0025] (2) When the workpiece passes through the moving jaw, the clamping part is first pushed to rotate around the third axis in the direction of the fixed jaw. As the workpiece is pushed forward, the clamping part is hidden in the guide groove until the workpiece enters the centering area, and the clamping part is reset under the action of the counterweight.

[0026] (3) When the workpiece enters the centering area, the conveying mechanism stops working and the lifting mechanism lifts the workpiece to remove it from the support of the conveying mechanism;

[0027] (4) The output end of the second telescopic component retracts, driving the relative moving jaw and fixed jaw to move horizontally along the Y-axis to the middle position of the top plate, completing the centering of the workpiece in the width direction; at the same time, the output end of the first telescopic component retracts, driving the two relative X-axis jaws to move horizontally along the X-axis to the middle position of the top plate, completing the centering of the workpiece in the length direction. Beneficial effects

[0028] (1) In this invention, the workpiece is transported to the top of the Y-axis centering mechanism by the conveying mechanism, and the moving jaw on the front side can be flipped to the side of the fixed jaw under the push of the workpiece, so that the top of the fixed jaw can be hidden in the guide groove, so that the workpiece can pass through and avoid interference between the two; the structure can simplify the mechanism, improve space utilization, and reduce the corresponding cost.

[0029] (2) Regarding the above-mentioned moving jaw, its clamping part can rotate around the third rotation axis to one side of the fixed jaw under the push of the workpiece. After the workpiece passes through, under the action of the counterweight, the clamping part can extend out of the guide groove to reset, and the angle of its reverse rotation is limited by the stop rod to ensure that the moving jaw can effectively drive the workpiece to center. The structure is simple in principle, easy to operate, and occupies little space, which can effectively improve the space utilization rate.

[0030] (3) In this invention, the lifting mechanism can lift the workpiece above the conveying mechanism, so that it is removed from the buffer chain, thus avoiding wear on the buffer chain during the alignment process.

[0031] (4) Regarding the above-mentioned lifting mechanism, when the first hinge and the second hinge are on the same straight line, there is a dead point between them, which can ensure the stability of the lifting mechanism; at this time, the weight of the workpiece acts on the base through the first hinge and the second hinge, which can effectively reduce the load of the third telescopic component and extend its service life. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the structure of the present invention;

[0033] Figure 2 This is a schematic diagram of the positional structure of the X-axis centering mechanism and the Y-axis centering mechanism of the present invention;

[0034] Figure 3 This is a schematic diagram of the Y-axis centering mechanism of the present invention;

[0035] Figure 4 This is a schematic diagram of the internal structure of the Y-axis alignment mechanism of the present invention;

[0036] Figure 5 This is a schematic diagram of the connection between the movable gripper and the support of the present invention;

[0037] Figure 6 This is a schematic diagram of the structure of the moving gripper of the present invention;

[0038] Figure 7 This is a schematic diagram of the lifting mechanism of the present invention;

[0039] Figure 8 This is a schematic diagram of the main structure of the lifting mechanism of the present invention;

[0040] Figure 9 This is a schematic diagram of the connection between the first hinge and the second hinge of the present invention;

[0041] Figure 10 This is a schematic diagram of the support plate of the present invention;

[0042] Figure 11 This is a schematic diagram of the X-axis alignment mechanism of the present invention;

[0043] Figure 12 This is a schematic diagram of the structure of the present invention with a workpiece;

[0044] Among them, 1. X-axis centering mechanism; 11. Support plate; 12. X-axis gripper; 131. First rotating shaft; 132. First connecting rod; 133. First swing arm; 134. First telescopic assembly; 14. Slide plate; 2. Y-axis centering mechanism; 21. Top plate; 22. Guide groove; 23. Moving gripper; 231. Clamping part; 232. Counterweight part; 24. Fixed gripper; 25. Connecting plate; 261. Second rotating shaft; 262. Second connecting rod; 263. Second swing arm; 264. Second telescopic assembly; 27. Telescopic assembly; 271. Support; 272. Third rotating shaft; 273. Stop bar; 3. Lifting mechanism; 31. Base; 32. Support rod; 33. Lifting plate; 34. Third telescopic assembly; 35. Hinge assembly; 351. Hinge bracket; 352. First hinge rod; 353. Second hinge rod; 36. Limiting assembly; 361. Limiting seat; 362. Limiting rod; 37. Rubber strip; 38. Guide rail; 39. Guide block; 4. Conveying mechanism; 41. Conveying bracket; 42. Buffer chain. Detailed Implementation

[0045] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. These drawings are simplified schematic diagrams, which are only used to illustrate the basic structure of the present invention and therefore only show the components relevant to the present invention. Example 1

[0046] like Figure 1 , Figure 12 As shown, a conveying and centering device includes an X-axis centering mechanism 1, a Y-axis centering mechanism 2, a lifting mechanism 3, and a conveying mechanism 4. The Y-axis centering mechanism 2 is located in the middle of the X-axis centering mechanism 1, and the conveying mechanism 4 is located on one side of the X-axis centering mechanism 1 and can convey the workpiece above the Y-axis centering mechanism 2 so that the X-axis centering mechanism 1 and the Y-axis centering mechanism 2 can center the workpiece in the length and width directions, respectively. The lifting mechanism 3 is located on both sides of the Y-axis centering mechanism 2 and can lift the workpiece to remove it from the conveying mechanism 4 to ensure that the conveying mechanism 4 is not damaged during the process of the workpiece being in the conveying mechanism 4.

[0047] like Figure 1-2 , Figures 10-12 As shown, the X-axis centering mechanism 1 includes a support plate 11 that supports the Y-axis centering mechanism 2. Two X-axis grippers 12 are arranged opposite each other on the support plate 11. Both X-axis grippers 12 can move horizontally along the X-axis to the middle position of the top plate 21, and the bottom of the support plate 11 is...

[0048] As described above, the support plate 11 is placed on the ground by the support legs. A first rotating shaft 131 is fixedly connected to the center of the bottom of the support plate 11. A first connecting rod 132 is rotatably mounted on the first rotating shaft 131. The two ends of the first connecting rod 132 are equidistant from the axis of the first rotating shaft 131. Both ends of the first connecting rod 132 are connected to a sliding plate 14 through a first swing rod 133. At the same time, the sliding plate 14 is slidably mounted on the bottom of the support plate 11. One end of the X-axis gripper 12 is fixedly connected to the support plate 11, and the other end passes through the support plate 11 to its top.

[0049] Two first telescopic components 134 are also fixedly installed at the bottom of the support plate 11. The output ends of the two first telescopic components 134 are respectively connected to the corresponding slide plate 14, and the two first telescopic components 134 are arranged opposite to each other and in parallel.

[0050] Specifically, the two first telescopic components 134 can drive the two slide plates 14 to move towards or away from each other along the X-axis, thereby driving the X-axis gripper 12 to achieve opening and closing motion along the X-axis direction; at the same time, the two slide plates 14 are connected by the first swing rod 133 and the first connecting rod 132. This structure can ensure that the two slide plates 14 can move synchronously, thereby ensuring that the centering mechanism has sufficient motion accuracy.

[0051] The support plate 11 has a through slot corresponding to the position of the X-axis gripper 12, so that it can pass through the support plate 11 and move along the X-axis direction; the two first telescopic components 134 are distributed opposite to each other and in parallel, which can ensure that the mechanism has a more compact structure and further improve the space utilization.

[0052] like Figure 1-6 , Figure 12 As shown, the Y-axis centering mechanism 2 includes a top plate 21 disposed above the X-axis centering mechanism 1. The top plate 21 has two sets of relatively distributed guide grooves 22. A movable gripper 23 and a fixed gripper 24 are respectively inserted into the two sets of guide grooves 22. Both can move horizontally towards the middle position of the top plate 21 synchronously along the Y-axis direction. The movable gripper 23 is close to the front side of the Y-axis centering mechanism 2, and the top of the movable gripper 23 can be hidden in the guide groove 22 by flipping it to one side of the fixed gripper 24.

[0053] As described above, the top plate 21 is fixedly installed above the support plate 11. The direction of the Y-axis centering mechanism 2 closest to the workpiece is set as the front side, and the opposite side is set as the rear side. When the conveying mechanism 4 delivers the workpiece, it first contacts the side of the moving jaw 23 opposite to the fixed jaw 24. As the workpiece is pushed forward, the moving jaw 23 is squeezed and flipped. Its top is hidden in the guide groove 22 so that the workpiece can be smoothly delivered into the centering area, that is, between the fixed jaw 24 and the moving jaw 23.

[0054] Furthermore, the Y-axis centering mechanism 2 also includes two connecting plates 25 disposed opposite to each other below the top plate 21, and both connecting plates 25 can move horizontally towards the center position of the top plate 21 synchronously along the Y-axis direction.

[0055] The top plate 21 has a second connecting rod 262 rotatably connected to the center of its bottom via a second rotating shaft 261. The two ends of the second connecting rod 262 are equidistant from the second rotating shaft 261 and are rotatably connected to a second swing rod 263. The end of the second swing rod 263 is rotatably connected to a connecting plate 25, and the connecting plate 25 is slidably connected to the top plate 21 along the Y-axis. A second telescopic component 264 is also fixedly installed at the bottom of the top plate 21, and the output end of the second telescopic component 264 is connected to the connecting plate 25.

[0056] Specifically, there are two second telescopic components 264, which are arranged opposite to each other and parallel to each other, enabling the mechanism to have a more compact structure and improve space utilization. The two second telescopic components 264 can drive the two connecting plates 25 to move towards or away from each other along the Y-axis, thereby driving the fixed gripper 24 and the movable gripper 23 to achieve opening and closing movements along the Y-axis. At the same time, since the two connecting plates 25 are connected by the structure composed of the second swing rod 263 and the second connecting rod 262, it can further ensure that the fixed gripper 24 and the movable gripper 23 can move synchronously, thereby ensuring that the centering mechanism has sufficient motion accuracy.

[0057] As described above, the fixed gripper 24 is fixedly connected to one of the connecting plates 25, and the movable gripper 23 is rotatably connected to the other connecting plate 25 through the support 27, and the support 27 is fixedly connected to the connecting plate 25.

[0058] The movable gripper 23 includes a gripping part 231, which is rotatably connected to the support 27 via a third rotating shaft 271. One end of the gripping part 231 can pass through the guide groove 22, and the other end is connected to a counterweight part 232. A stop bar 272 is provided below the third rotating shaft 271 to block the gripping part 231.

[0059] Specifically, the support 27 has a U-shaped structure, the movable jaw 23 is located in the middle of the inner groove of the support 27, and its clamping part 231 is rotatably connected to the support 27 through the third rotating shaft 271. The counterweight part 232 is located at the end of the clamping part 231 and has a large mass to ensure that the center of gravity of the movable jaw 23 is located at the position of the counterweight part 232. The stop bar 272 is located directly below the third rotating shaft 271 to counteract the centering clamping force on the movable jaw 23, ensuring that the clamping part 231 is in a vertical state when aligning and preventing it from over-rotating in the opposite direction.

[0060] Each set of guide grooves 22 is provided with two, namely two fixed jaws 24 and two movable jaws 23, which are symmetrically distributed to facilitate more accurate centering of the workpiece.

[0061] In summary, the X-axis direction is the direction in which the X-axis gripper 12 moves, i.e., the length direction of the workpiece; the Y-axis direction is the direction in which the workpiece is conveyed, i.e., the width direction of the workpiece; the first telescopic component 134, the second telescopic component 264, and the third telescopic component 34 mentioned below are all preferably cylinders; and the first rotating shaft 131 and the second rotating shaft 261 are coaxially distributed to ensure that the workpiece is in the center position of the support plate 11 after alignment; and in order to reduce friction and wear, the slide plate 14 and the support plate 11, as well as the connecting plate 25 and the top plate 21, are all slidably connected by slide rails and sliders.

[0062] like Figure 1 , Figure 12 As shown, the conveying mechanism 4 includes a conveying bracket 41. Two synchronously rotating buffer chains 42 are provided on the top of the conveying bracket 41. The buffer chains 42 are chains with buffer components. Both buffer chains 42 are parallel to the Y-axis direction and extend to both sides of the Y-axis centering mechanism 2. The two buffer chains 42 on the top of the conveying bracket 41 are driven by a motor and a sprocket, which is a conventional technology and will not be described in detail here. It can convey the workpiece along the Y-axis direction to the top of the Y-axis centering mechanism 2.

[0063] like Figure 1-2 , Figure 7-9 As shown, lifting mechanisms 3 are provided on both sides of the Y-axis centering mechanism 2, and the lifting mechanisms 3 can lift the workpiece away from the conveying mechanism 4. Since the workpiece will twist during centering, there is a large friction between its bottom surface and the buffer chain 42 of the conveying mechanism 4. In order to avoid irreversible damage to the buffer chain 42 caused by this friction and affect its working performance, the lifting mechanism 3 lifts the workpiece so that its bottom surface is removed from the conveying mechanism 4. After being lifted, the workpiece is still within the centering range of the X-axis gripper 12, the moving gripper 23 and the fixed gripper 24.

[0064] As described above, the lifting mechanism 3 includes a base 31 and a lifting plate 33. The base 31 is fixedly installed on the support plate 11 of the X-axis centering mechanism 1. A support rod 32 is vertically connected to the base 31, and the lifting plate 33 is slidably connected to the support rod 32 via a guide rail 38 and a guide block 39. A third telescopic component 34 is also provided on the base 31. The output end of the third telescopic component 34 is connected to a hinge bracket 351. A first hinge rod 352 and a second hinge rod 353 are coaxially rotatably connected to the hinge bracket 351, and the two are rotatably connected to the lifting plate 33 and the base 31, respectively.

[0065] The hinge bracket 351, the first hinge rod 352, and the second hinge rod 353 form the hinge assembly 35. Since the first hinge rod 352 and the second hinge rod 353 are rotatably connected to the lifting plate 33 and the base 31 respectively, and are coaxially rotatably connected to the hinge bracket 351, when the output end of the third telescopic assembly 34 extends, the included angle between the first hinge rod 352 and the second hinge rod 353 gradually increases until it reaches 180 degrees. At this time, the height of the lifting plate 33 increases, and the workpiece is lifted until the bottom surface of the workpiece is separated from the buffer chain 42.

[0066] A rubber strip 37 is provided on the top of the lifting plate 33. The rubber strip 37 is made of rubber material, which can effectively reduce friction and wear between the workpiece and the lifting plate 33.

[0067] To ensure that the angle between the first hinge rod 352 and the second hinge rod 353 is 180 degrees after the lifting, a limiting component 36 for blocking the hinge bracket 351 is also provided on the base 31.

[0068] As described above, the limiting component 36 includes a limiting seat 361 fixedly installed on the base 31, a limiting rod 362 fixedly installed on the limiting seat 361, and when the first hinge rod 352 and the second hinge rod 353 are on the same straight line, the connection between the two can abut against the end of the limiting rod 362.

[0069] Specifically, when the first hinge 352 and the second hinge 353 are on the same straight line, they are at a mechanical dead point and can form a self-locking mechanism. At this time, the weight of the workpiece acts on the base 31 through the first hinge 352 and the second hinge 353, which can effectively reduce the load on the third telescopic component 34 and extend its service life. Example 2

[0070] Based on Embodiment 1, the present invention also proposes a delivery alignment method, comprising the following steps:

[0071] (1) Place the workpiece on the conveying mechanism 4, which will transport the workpiece to the centering area;

[0072] (2) When the workpiece passes through the moving jaw 23, the clamping part 231 is first pushed to rotate around the third rotating shaft 271 toward the fixed jaw 24. As the workpiece is pushed forward, the clamping part 231 is hidden in the guide groove 22. Until the workpiece enters the centering area, the clamping part 231 is reset under the action of the counterweight part 232.

[0073] (3) When the workpiece enters the centering area, the conveying mechanism 4 stops working and the lifting mechanism 3 lifts the workpiece to get off the support of the conveying mechanism 4;

[0074] (4) The output end of the second telescopic component 263 retracts, driving the relative moving jaw 23 and fixed jaw 24 to move horizontally along the Y-axis to the middle position of the top plate 21, completing the centering of the workpiece in the width direction; at the same time, the output end of the first telescopic component 134 retracts, driving the two relative X-axis jaws 12 to move horizontally along the X-axis to the middle position of the top plate 21, completing the centering of the workpiece in the length direction.

[0075] As mentioned above, the conveying mechanism 4 in step (1) is specifically driven by a motor through a sprocket to rotate two buffer chains 42 synchronously. The two buffer chains 42 can rotate synchronously and extend to both sides of the Y-axis centering mechanism 2 respectively, so as to convey the workpiece to the centering area. The centering area here is the area between the two X-axis grippers 12 and the fixed gripper 24 and the moving gripper 23.

[0076] In step (3), the output end of the third telescopic component 34 extends to drive the angle between the first hinge 352 and the second hinge 353 to open, converting the horizontal displacement of the third telescopic component 34 into the vertical movement of the lifting plate 33, thereby lifting the workpiece to get away from the support of the conveying mechanism 4, ensuring that there is no friction or wear between the bottom of the workpiece and the conveying mechanism 4 during alignment.

[0077] In step (4), since the moving gripper 23 can rotate around the third rotating shaft 271, in order to avoid it being squeezed by the side wall of the workpiece during centering and thus rotating in the opposite direction, a stop bar 272 is set below the third rotating shaft 271 to prevent the moving gripper 23 from rotating excessively in the opposite direction.

[0078] Work steps:

[0079] The workpiece is conveyed by the conveying mechanism 4 to the top of the Y-axis centering mechanism 2. Under the support of the conveying bracket 41, the motor drives the two buffer chains 42 to rotate synchronously, moving the workpiece to the top of the Y-axis centering mechanism 2. When passing the moving gripper 23, the workpiece pushes the clamping part 231 to rotate around the third rotating shaft 271 towards the fixed gripper 24. As the workpiece advances, the top of the clamping part 231 gradually hides into the guide groove 22. At this time, the counterweight part 232 is raised, but does not exceed the guide groove 22. When the workpiece is fully in the centering area, the clamping part 231 can return to its original position under the action of the counterweight part 232.

[0080] The lifting mechanism 3 lifts the workpiece away from the conveying mechanism 4: After the workpiece enters the centering area, the output end of the third telescopic component 34 extends and lifts the lifting plate 33 through the hinge component 35, so that it moves upward along the support rod 32, thereby lifting the workpiece above the buffer chain 42 through the lifting plate 33.

[0081] The workpiece is centered in both length and width directions: Driven by the first telescopic assembly 134, the X-axis gripper 12 moves along the X-axis to the center position of the support plate 11 via the slide plate 14, aligning the workpiece in the length direction; simultaneously, driven by the second telescopic assembly 264, the fixed gripper 24 and the movable gripper 23 move along the Y-axis to the center position of the top plate 21 via the connecting plate 25 through the guide groove 22, aligning the workpiece in the width direction; during this process, due to the presence of the stop bar 272, the clamping part 231 is prevented from rotating away from the fixed gripper 24 around the third rotating axis 271.

[0082] In summary, this device ensures that there is no interference between the workpiece and the corresponding gripper during the workpiece conveying process, and its simple and compact structure is conducive to improving space utilization. Moreover, the lifting mechanism 3 can also ensure that the workpiece is not damaged during alignment.

[0083] Based on the preferred embodiments of the present invention described above, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A conveying and centering device, comprising a Y-axis centering mechanism (2) disposed on an X-axis centering mechanism (1), and a conveying mechanism (4) for conveying a workpiece to the top of the Y-axis centering mechanism (2) is disposed on one side of the X-axis centering mechanism (1), characterized in that: The Y-axis centering mechanism (2) includes a top plate (21) disposed above the X-axis centering mechanism (1), and two sets of guide grooves (22) are provided on the top plate (21). The two sets of guide grooves (22) are respectively equipped with a movable gripper (23) and a fixed gripper (24), both of which can move horizontally towards the middle position of the top plate (21) synchronously along the Y-axis. The movable gripper (23) is close to the front side of the Y-axis centering mechanism (2), and the movable gripper (23) can be flipped to one side of the fixed gripper (24) to hide its top in the guide groove (22); The Y-axis centering mechanism (2) also includes two connecting plates (25) arranged opposite to each other below the top plate (21), and both connecting plates (25) can move horizontally towards the middle position of the top plate (21) synchronously along the Y-axis direction; The fixed gripper (24) is fixedly connected to one of the connecting plates (25), and the movable gripper (23) is rotatably connected to the other connecting plate (25) through a support (27), and the support (27) is fixedly connected to the connecting plate (25); The movable gripper (23) includes a gripping part (231), which is rotatably connected to the support (27) via a third rotating shaft (271). One end of the gripping part (231) can pass through the guide groove (22), and the other end is connected to a counterweight part (232). A stop bar (272) is provided below the third rotating shaft (271) to block the gripping part (231). When the workpiece passes the moving jaw (23), the clamping part (231) is first pushed to rotate around the third rotating shaft (271) towards the fixed jaw (24). As the workpiece is pushed forward, the clamping part (231) is hidden in the guide groove (22). After the workpiece enters the centering area, the clamping part (231) is reset under the action of the counterweight part (232).

2. The conveying and centering device according to claim 1, characterized in that: The center of the bottom of the top plate (21) is rotatably connected to a second connecting rod (262) via a second rotating shaft (261). The two ends of the second connecting rod (262) are equidistant from the second rotating shaft (261) and are rotatably connected to a second swing rod (263). The end of the second swing arm (263) is rotatably connected to the connecting plate (25), and the connecting plate (25) is slidably connected to the top plate (21) along the Y-axis direction; The bottom of the top plate (21) is also fixedly installed with a second telescopic component (264), the output end of which is connected to the connecting plate (25).

3. The conveying and centering device according to claim 2, characterized in that: There are two second telescopic components (264), and the two second telescopic components (264) are distributed opposite to each other and in parallel.

4. The conveying and centering device according to claim 1, characterized in that: The conveying mechanism (4) includes a conveying bracket (41), and the top of the conveying bracket (41) is provided with two synchronously rotating buffer chains (42). The two buffer chains (42) are parallel to the Y-axis direction and extend to both sides of the Y-axis centering mechanism (2). The Y-axis centering mechanism (2) is provided with lifting mechanisms (3) on both sides, and the lifting mechanisms (3) can lift the workpiece away from the conveying mechanism (4).

5. The conveying and centering device according to claim 4, characterized in that: The lifting mechanism (3) includes a base (31) and a lifting plate (33). The base (31) is fixedly installed on the X-axis centering mechanism (1). A support rod (32) is vertically connected to the base (31), and the lifting plate (33) is slidably connected to the support rod (32). The base (31) is also provided with a third telescopic component (34), the output end of which is connected to a hinge bracket (351). The hinge bracket (351) is coaxially rotatably connected to a first hinge rod (352) and a second hinge rod (353), which are respectively rotatably connected to the lifting plate (33) and the base (31).

6. The conveying and centering device according to claim 5, characterized in that: The base (31) is also provided with a limiting component (36) to block the hinge bracket (351), and the top of the lifting plate (33) is provided with a rubber strip (37).

7. The conveying and centering device according to claim 6, characterized in that: The limiting component (36) includes a limiting seat (361) fixedly installed on the base (31), a limiting rod (362) fixedly installed on the limiting seat (361), and when the first hinge rod (352) and the second hinge rod (353) are on the same straight line, the connection between the two can abut against the end of the limiting rod (362).

8. The conveying and centering device according to claim 1, characterized in that: The X-axis centering mechanism (1) includes a support plate (11) that supports the Y-axis centering mechanism (2). Two X-axis grippers (12) are arranged opposite to each other on the support plate (11), and both X-axis grippers (12) can move horizontally along the X-axis to the middle position of the top plate (21) at the same time.

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