Workpiece clamping and overturning mechanism

Abstract

The utility model relates to the technical field of clamp tools, in particular to a turnover mechanism for clamping a workpiece, which comprises a lifting cylinder, a mounting table, a motor, a bearing seat, a turnover shaft, a mounting seat, a base plate and a vacuum chuck, the movable end of the lifting cylinder is connected with the mounting table, the motor and the bearing seat are mounted on the mounting table, and the output end of the motor is connected with a belt wheel I; an overturning shaft is rotationally connected into the bearing seat, one end of the overturning shaft is connected with a second belt wheel, and the first belt wheel and the second belt wheel are in transmission connection through a transmission belt. According to the technical scheme, the lifting air cylinder and the overturning shaft driven by the motor cooperatively act, automatic clamping and overturning of a workpiece are achieved in combination with the vacuum suction cup, dependence of a traditional mechanism on manual assistance is eliminated, and operation continuity is improved; and the design of a telescopic opening and a tensioning hole of the mounting seat is matched with a special-shaped groove and a bulge structure of the turnover shaft, so that turnover shafts of different specifications can be quickly adapted, and the debugging steps during workpiece replacement are reduced.

Description

Technical Field

[0001] This utility model relates to the field of fixture and tooling technology, specifically to a workpiece clamping and flipping mechanism. Background Technology

[0002] In the automated processing of electronic components and precision parts, workpiece clamping and flipping are key steps in achieving full automation. Traditional workpiece flipping mechanisms typically use a single robotic arm or fixed fixture to perform the action, but existing technologies have the following significant drawbacks:

[0003] Traditional flipping mechanisms mostly use gear and rack or linkage drives, resulting in cumbersome mechanical structures. When changing to different workpiece sizes, the fixture position and transmission parameters need to be readjusted, with debugging taking several hours, leading to low equipment utilization during small-batch production. Furthermore, existing mechanisms are usually designed for workpieces of specific sizes, and the gripping and positioning accuracy drops significantly when the workpiece size (such as length and thickness) changes. If mechanical grippers are used, different sizes of workpieces require different specialized grippers, which is costly and inefficient, and cannot meet the needs of flexible production with diverse product varieties. Utility Model Content

[0004] This invention aims to at least partially solve one of the technical problems in related technologies. Therefore, the purpose of this invention is to provide a workpiece clamping and flipping mechanism to improve flipping efficiency.

[0005] The objective of this utility model can be achieved through the following technical solutions:

[0006] A workpiece clamping and flipping mechanism includes a lifting cylinder, a mounting platform, a motor, a bearing housing, a flipping shaft, a mounting base, a base plate, and vacuum suction cups. The movable end of the lifting cylinder is connected to the mounting platform, and the motor and bearing housing are mounted on the mounting platform. The output end of the motor is connected to a pulley, and the flipping shaft is rotatably connected inside the bearing housing. One end of the flipping shaft is connected to a pulley, and the pulleys are connected via a transmission belt. The other end of the flipping shaft is connected to a suction cup bracket via the mounting base, and multiple vacuum suction cups are provided on the suction cup bracket.

[0007] In some embodiments of the present invention, a protective cover is provided on the outer side of the transmission belt, and the protective cover is fixed on the mounting platform to protect the transmission belt, pulley one, and pulley two.

[0008] In some embodiments of the present invention, the cylinder body of the lifting cylinder is fixed to an external device by bolts, and the movable end of the lifting cylinder is connected to the mounting platform through a flange, which can drive the mounting platform to move up and down.

[0009] In some embodiments of the present invention, there are two lifting cylinders, which are symmetrically arranged about the center line of the mounting platform.

[0010] In some embodiments of the present invention, a limiting seat is provided on the outer side of the mounting platform corresponding to the flip shaft. The limiting seat is fixed on the mounting platform to limit the rotation angle of the flip shaft.

[0011] In some embodiments of the present invention, the mounting base is provided with a mounting hole, a telescopic opening and a tensioning hole, the mounting hole being located at the center of the mounting base for fixed connection with the flipping shaft;

[0012] The telescopic port connects the mounting hole to the outside, and the tensioning hole has a screw threaded through it to adjust the opening width of the mounting hole.

[0013] In some embodiments of the present invention, a shaped groove is formed inside the mounting hole, and a protrusion matching the shaped groove is formed on the surface of the flip shaft.

[0014] In some embodiments of the present invention, the mounting base is provided with a limiting hole one and a limiting hole two, the extension directions of which are perpendicularly intersecting and both communicating with the mounting hole.

[0015] In some embodiments of the present invention, the suction cup bracket includes a base plate, a horizontal plate and a vertical plate. The base plate is detachably connected to the mounting base. The two horizontal plates are spaced apart along the length of the base plate and are detachably connected to the base plate. The two vertical plates are symmetrically arranged about the base plate and are detachably connected to the two horizontal plates respectively.

[0016] The horizontal and vertical plates are arranged perpendicularly to each other.

[0017] In some embodiments of the present invention, a strip-shaped through hole is provided in the middle of both the horizontal plate and the vertical plate, and the vacuum suction cup is installed on the horizontal plate and the vertical plate through the strip-shaped through hole and its position can be adjusted along the strip-shaped through hole.

[0018] The beneficial effects of this utility model are:

[0019] Compared to traditional methods, this technical solution achieves automated workpiece clamping and flipping through the coordinated action of a lifting cylinder and a motor-driven tilting shaft, combined with a vacuum suction cup. This eliminates the reliance on manual assistance in traditional mechanisms and improves operational continuity. The telescopic port and tensioning hole design of the mounting base, along with the irregular groove and protrusion structure of the tilting shaft, allows for quick adaptation to tilting shafts of different specifications, reducing debugging steps when changing workpieces. The horizontal and vertical plates of the suction cup bracket are fitted with vacuum suction cups through strip-shaped through holes, allowing for flexible adjustment of the suction cup position to accommodate workpieces of different sizes. This enhances the equipment's compatibility and effectively solves the problems of complex debugging and poor compatibility in traditional tilting mechanisms, meeting the flexible needs of multi-variety, small-batch production. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings.

[0021] Figure 1 This is a perspective view of the present invention;

[0022] Figure 2 This is a side view of the present invention;

[0023] Figure 3 This is a perspective view of the mounting base and the base plate in this utility model;

[0024] Figure 4 This is a three-dimensional view of the suction cup bracket and vacuum suction cup in this utility model.

[0025] In the diagram: 1. Lifting cylinder; 2. Mounting platform; 3. Motor; 31. Pulley 1; 32. Transmission belt; 33. Protective cover; 4. Bearing seat; 41. Tilting shaft; 42. Pulley 2; 43. Limiting seat; 5. Mounting base; 51. Mounting hole; 52. Telescopic opening; 53. Tensioning hole; 54. Limiting hole 1; 55. Limiting hole 2; 6. Base plate; 61. Horizontal plate; 62. Vertical plate; 63. Strip through hole; 7. Vacuum suction cup. Detailed Implementation

[0026] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0027] Example 1:

[0028] like Figure 1 , Figure 2 As shown, this embodiment employs a basic tilting mechanism consisting of a lifting cylinder 1, a mounting platform 2, a motor 3, a bearing seat 4, a tilting shaft 41, a mounting base 5, a base plate 6, and a vacuum suction cup 7. The movable end of the lifting cylinder 1 is connected to the mounting platform 2, forming a vertical lifting motion unit; the motor 3 and the bearing seat 4 are mounted on the mounting platform 2, forming a horizontal tilting drive unit.

[0029] The output end of motor 3 is connected to pulley 31, which in turn is connected to pulley 42 mounted on the tilting shaft 41 via transmission belt 32. When motor 3 starts, power is transmitted to the tilting shaft 41 through the transmission path of pulley 31 → transmission belt 32 → pulley 42, causing it to rotate within bearing housing 4. The other end of the tilting shaft 41 is connected to a suction cup bracket via mounting base 5. Multiple vacuum suction cups 7 mounted on the suction cup bracket enable clamping and tilting operations on the workpiece. This structure is simple and compact, with low manufacturing cost and high transmission efficiency. The belt drive allows for a large transmission ratio, and the lifting and tilting functions are independently controlled, providing flexible operation.

[0030] As an example, a protective cover 33 is provided on the outer side of the transmission belt 32, and the protective cover 33 is fixed on the mounting platform 2. The protective cover 33 is made of lightweight aluminum alloy and the surface is anodized, which has good corrosion resistance and aesthetics. The protective cover 33 forms a closed space, completely covering the transmission belt 32, pulley 31, and pulley 42, preventing foreign objects from entering the transmission system, and preventing operators from accidentally contacting rotating parts.

[0031] Example 2:

[0032] like Figure 2 As shown, in this embodiment, there are two lifting cylinders 1, which are symmetrically arranged about the center line of the mounting platform 2. The cylinder body of the lifting cylinder 1 is fixed to the external equipment by bolts, and the movable end of the lifting cylinder 1 is connected to the mounting platform 2 through a flange.

[0033] The dual lifting cylinder 1 employs synchronous control technology, ensuring synchronized operation of the two cylinders through a distributor or proportional valve. When a cylinder receives a lifting signal, compressed air simultaneously enters both cylinders, pushing the piston rods to extend and retract synchronously, thus smoothly raising and lowering the mounting platform 2. The flange connection ensures connection strength, while the bolt fixing method facilitates installation and adjustment.

[0034] In the above design, the dual-cylinder design greatly improves the load-bearing capacity, which is an ideal solution when the single-cylinder load-bearing capacity is insufficient. The symmetrical arrangement ensures the balance of the mounting platform 2 during the lifting process and avoids uneven loading and tilting.

[0035] It should be noted that a limiting seat 43 is provided on the outer side of the mounting platform 2 corresponding to the rotating shaft 41. The limiting seat 43 is fixed on the mounting platform 2 and is used to limit the rotation angle of the rotating shaft 41. The limiting seat 43 contains a mechanical limiting block and an angle sensor. When the rotating shaft 41 rotates to a preset angle, the limiting block mounted on the rotating shaft 41 contacts the fixed limiting block inside the limiting seat 43, achieving mechanical limiting. Simultaneously, the angle sensor detects the rotation angle of the rotating shaft 41 in real time and feeds back position information to the control system.

[0036] In the above scheme, mechanical limiters ensure absolute safety and prevent excessive flipping, angle sensors provide accurate position feedback to achieve precise positioning, dual protection mechanisms improve system reliability, and the limit angle is adjustable to adapt to different process requirements.

[0037] Example 3:

[0038] like Figure 3 As shown, in this embodiment, the mounting base 5 has a mounting hole 51, a telescopic opening 52, and a tensioning hole 53. The mounting hole 51 is located at the center of the mounting base 5 and is used to fix it to the flip shaft 41; the telescopic opening 52 connects the mounting hole 51 to the outside; and the tensioning hole 53 has a screw threaded into it and passes through the telescopic opening 52.

[0039] Mounting hole 51 is precision machined, with an inner surface finish of Ra0.8. The telescopic opening 52 is designed with a radial slit; when the screw in tensioning hole 53 is tightened, telescopic opening 52 contracts, reducing the inner diameter of mounting hole 51 and forming an interference fit with tilting shaft 41. The tightening torque of the adjusting screw allows for precise control of the clamping force, ensuring reliable and adjustable connection.

[0040] As an example, a shaped groove is formed inside the mounting hole 51, and a protrusion matching the shaped groove is formed on the surface of the flip shaft 41. The shaped groove is hexagonal or splined in shape, forming a shape fit with the corresponding protrusion on the surface of the flip shaft 41. This connection method can transmit greater torque while ensuring precise radial and axial positioning.

[0041] As an example, the mounting base 5 has two through-holes, a first limiting hole 54 and a second limiting hole 55, which extend perpendicularly and both communicate with the mounting hole 51. Limiting screws are installed in the first limiting hole 54 and the second limiting hole 55 respectively. When the rotating shaft 41 is installed in place, the limiting screws extend into the limiting grooves on the surface of the rotating shaft 41. The perpendicular arrangement of the two limiting holes ensures that the rotating shaft 41 is precisely limited in both the radial and axial directions, preventing displacement during operation. Multi-directional limiting ensures positioning accuracy, and the limiting force is adjustable to adapt to different working conditions.

[0042] As an example, such as Figure 4 As shown, the suction cup support includes a base plate 6, horizontal plates 61, and vertical plates 62. The base plate 6 is detachably connected to the mounting base 5. Two horizontal plates 61 are spaced apart along the length of the base plate 6 and are detachably connected to the base plate 6. Two vertical plates 62 are symmetrically arranged about the base plate 6 and are detachably connected to the two horizontal plates 61 respectively. The base plate 6, as the main load-bearing structure, is made of high-strength aluminum alloy and its surface is hard anodized. The horizontal plates 61 and vertical plates 62 are connected to the base plate 6 by bolts to form a grid-like support structure. This modular design allows for flexible configuration of the suction cup layout according to the shape and size of the workpiece. The modular design is highly adaptable, and the structure can be adjusted as needed. The grid-like layout provides multiple suction cup mounting positions.

[0043] Both the horizontal plate 61 and the vertical plate 62 have through holes 63 running through their middle sections. The vacuum suction cup 7 is mounted on the horizontal plate 61 and the vertical plate 62 through the through holes 63 and its position can be adjusted along the through holes 63. The through holes 63 are precision machined, with smooth inner surfaces and high dimensional accuracy. The vacuum suction cup 7 is fixed in the through holes 63 by a special clamp (two nuts spaced apart), and the clamp can slide along the through holes to adjust its position. After adjustment, the position is fixed by locking screws.

[0044] In the above solution, the position of the suction cup can be continuously adjusted to adapt to different workpieces, with high adjustment precision, accurate positioning, reliable locking, no loosening during operation, convenient suction cup replacement, and good maintainability.

[0045] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0046] The above description is merely an example and illustration of the present utility model. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of the present utility model.

Claims

1. A workpiece clamping and flipping mechanism, comprising a lifting cylinder, a mounting platform, a motor, a bearing housing, a flipping shaft, a mounting base, a base plate, and a vacuum suction cup, characterized in that, The movable end of the lifting cylinder is connected to the mounting platform, on which a motor and a bearing seat are mounted. The output end of the motor is connected to pulley one, and a rotating shaft is rotatably connected inside the bearing seat. One end of the rotating shaft is connected to pulley two, and pulley one and pulley two are connected by a transmission belt. The other end of the rotating shaft is connected to a suction cup bracket through a mounting base, and multiple vacuum suction cups are provided on the suction cup bracket.

2. The workpiece clamping and flipping mechanism according to claim 1, characterized in that, A protective cover is provided on the outside of the transmission belt, and the protective cover is fixed on the mounting platform to protect the transmission belt, pulley one, and pulley two.

3. The workpiece clamping and flipping mechanism according to claim 1, characterized in that, The cylinder body of the lifting cylinder is fixed to the external equipment by bolts, and the movable end of the lifting cylinder is connected to the mounting platform through a flange, which can drive the mounting platform to move up and down.

4. The workpiece clamping and flipping mechanism according to claim 1, characterized in that, There are two lifting cylinders in total, and the two lifting cylinders are symmetrically arranged about the center line of the mounting platform.

5. A workpiece clamping and flipping mechanism according to claim 1, characterized in that, The mounting platform is provided with a limit seat on the outer side of the rotating shaft. The limit seat is fixed on the mounting platform to limit the rotation angle of the rotating shaft.

6. A workpiece clamping and flipping mechanism according to claim 1, characterized in that, The mounting base is provided with mounting holes, telescopic openings and tensioning holes. The mounting holes are located at the center of the mounting base and are used for fixed connection with the flipping shaft. The telescopic port connects the mounting hole to the outside, and the tensioning hole has a screw threaded through it to adjust the opening width of the mounting hole.

7. A workpiece clamping and flipping mechanism according to claim 6, characterized in that, The mounting hole has a shaped groove inside, and the surface of the flip shaft has a protrusion that matches the shaped groove.

8. A workpiece clamping and flipping mechanism according to claim 6, characterized in that, The mounting base has two through-holes, namely a first limiting hole and a second limiting hole, which extend perpendicularly to each other and are both connected to the mounting hole.

9. A workpiece clamping and flipping mechanism according to claim 1, characterized in that, The suction cup bracket includes a base plate, a horizontal plate and a vertical plate. The base plate is detachably connected to the mounting base. The two horizontal plates are spaced apart along the length of the base plate and are detachably connected to the base plate. The two vertical plates are symmetrically arranged about the base plate and are detachably connected to the two horizontal plates respectively. The horizontal and vertical plates are arranged perpendicularly to each other.

10. A workpiece clamping and flipping mechanism according to claim 9, characterized in that, Both the horizontal and vertical plates have through holes in their middle sections. Vacuum suction cups are mounted on the horizontal and vertical plates through these through holes and their positions can be adjusted along the through holes.

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