An automatic centering device

Abstract

The present invention relates to an automatic centering device, which comprises a machine body, on which a longitudinal movement component and a vertical movement component are provided; the longitudinal movement component includes a linear guide rail, a longitudinal sliding seat, a driving device and a track, the linear guide rails are symmetrically arranged on the inner side walls on both sides of the machine body, a longitudinal sliding seat is slidably connected between the two linear guide rails, the longitudinal sliding seat is connected with the driving device, and the driving device longitudinally moves along the track; the vertical movement component includes a lifting device, a vertical sliding seat and a guide rod, the lifting device is installed on the longitudinal sliding seat, the guide rod is inserted into the longitudinal sliding seat, the vertical sliding seat is connected with the lifting device and the guide rod, and a support component for supporting a workpiece is arranged at the upper end of the vertical sliding seat. By providing the longitudinal and vertical movement components to achieve movement in the longitudinal and vertical directions, automatic adjustment can be realized according to the changes in the length and diameter of the workpiece, with high control precision and high working efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of automated equipment, and particularly relates to an automatic centering device. Background Art

[0002] Before welding or machining a workpiece, it is necessary to adjust according to the size of the workpiece to make the center of the workpiece equal in height to the center of the equipment. Currently, the centering device mainly relies on manual adjustment by the operator. The longitudinal position adjustment can only be controlled by the operator's experience, and the vertical movement is driven by a cylinder for fixed-distance adjustment. It is impossible to purposefully adjust the center and support points according to specific conditions such as the size change of the workpiece. Manual adjustment not only has a large error, the welding or machining quality cannot be guaranteed, but also increases the labor cost and reduces the work efficiency. Therefore, the existing material addition and subtraction equipment for shaft-shaped or barrel-shaped workpieces such as ring welders has limited capabilities, and it is very difficult to machine workpieces of multiple sizes with one machine. On the other hand, since no corresponding protection measures are taken for the sliding components of the centering device, the debris generated during machining or welding falls into the sliding components, greatly reducing the service life of sliding components such as guide rails, affecting the stable operation of the equipment, and increasing the user's usage cost. Summary of the Invention

[0003] Aiming at the problem in the prior art that the centering device cannot be automatically adjusted according to the size of the workpiece, the present invention provides an automatic centering device.

[0004] The technical solution of the present invention to solve the above technical problems is as follows: An automatic centering device includes a bed body, and a longitudinal movement component and a vertical movement component are provided on the bed body;

[0005] The longitudinal movement component includes linear guide rails, a longitudinal sliding seat, a driving device, and a track. The two linear guide rails are symmetrically arranged on the inner side walls on both sides of the bed body. The linear guide rails are slidably connected to the longitudinal sliding seat. The longitudinal sliding seat is connected to the driving device. The driving device moves longitudinally along the track, and both ends of the track are fixed on the bed body;

[0006] The vertical movement component includes a lifting device, a vertical sliding seat, and a guide rod. The lifting device is installed on the longitudinal sliding seat. The guide rod is inserted into the longitudinal sliding seat. The vertical sliding seat is connected to the lifting device and the guide rod. A support component for supporting the workpiece is provided at the upper end of the vertical sliding seat.

[0007] The beneficial effects of the present invention are as follows: By providing a longitudinal movement component and a vertical movement component, the present application can achieve the longitudinal and vertical movement of the workpiece. Therefore, it can be automatically adjusted according to the changes in the length and diameter of the workpiece, making the centers of workpieces with different diameters coincide with the center of the equipment. It has high control precision, simple operation, improves the quality of the workpiece, reduces the labor intensity of the operator, improves work efficiency, can meet the processing requirements of workpieces of different sizes, and expands the applicable range of this centering device.

[0008] On the basis of the above technical solutions, in order to achieve convenient use and equipment stability, the present invention can further improve the above technical solutions as follows:

[0009] Furthermore, a first shield is provided on the outer side wall of the vertical sliding seat, a second shield is provided on the longitudinal sliding seat, the first shield and the second shield cooperate to form a sealed cavity, and the lifting device and the upper end of the guide rod are located in the sealed cavity.

[0010] The beneficial effect of adopting the above further technical solution is that by arranging the lifting device and the guide rod in the sealed cavity, it can prevent debris from falling on the lifting device or the guide rod, reduce the failure rate, and improve the service life of the lifting device and the guide rod.

[0011] Furthermore, the first shield is provided outside the second shield.

[0012] The beneficial effect of adopting the above further technical solution is that it can prevent welding or machining debris, etc. from entering the sealed cavity along the gap between the two shields, ensuring the isolation effect on welding or machining debris.

[0013] Furthermore, an installation shield is provided on the bed body at the connection of the linear guide rail and the longitudinal sliding seat.

[0014] The beneficial effect of adopting the above further technical solution is that the installation shield can prevent the linear guide rail and the longitudinal sliding seat from being scratched by debris, etc., reduce the failure rate, reduce the maintenance cost, and improve the service life.

[0015] Furthermore, a drag chain is provided in the bed body below the installation shield, and the drag chain is used to accommodate the pipelines of the automatic centering device.

[0016] The beneficial effect of adopting the above further technical solution is that the drag chain can prevent damage caused by repeated bending of the pipelines due to the movement of the longitudinal sliding seat and the vertical sliding seat, and improve the service life of the pipelines.

[0017] Furthermore, a third shield is provided below the longitudinal sliding seat, and the lower ends of the driving device and the guide rod are located in the third shield.

[0018] The beneficial effects of adopting the above further technical solution are as follows: The protection cover III is used to protect the driving device and the guide rod, avoiding scratches caused by debris and improving the service life.

[0019] Further, at least one guide rod is provided, and an oil-free bushing is provided at the connection between the guide rod and the longitudinal sliding seat.

[0020] The beneficial effects of adopting the above further technical solution are as follows: The guide rod can ensure the stability of the vertical sliding seat during up and down movement, and the oil-free bushing can ensure the smoothness of the up and down movement of the guide rod, thereby ensuring the normal operation of the vertical sliding seat.

[0021] Further, the driving device is a servo motor, the track is a rack, a gear is provided at the output end of the servo motor, and the gear meshes with the rack.

[0022] The beneficial effects of adopting the above further technical solution are as follows: The longitudinal movement of the longitudinal sliding seat is realized through the cooperation of the gear and the rack, with a simple structure and stable and reliable power transmission.

[0023] Further, the lifting device includes a servo motor I and a screw hoist. The output end of the servo motor I is connected to the screw hoist, and the output end of the screw hoist is connected to the vertical sliding seat.

[0024] The beneficial effects of adopting the above further technical solution are as follows: The vertical sliding seat is lifted or lowered by driving the screw hoist through the servo motor, and the distance of the up and down movement of the vertical sliding seat can be accurately controlled, while the power transmission is stable and reliable.

[0025] Further, two support components are provided. Each support component includes two symmetrically arranged brackets, and the two brackets cooperate to form a V-shaped groove.

[0026] The beneficial effects of adopting the above further technical solution are as follows: The V-shaped groove can not only support the workpiece, but also adjust the distance between the brackets according to the diameter of the workpiece, so as to meet the fixing requirements of workpieces with different diameters. The structure is simple and the installation is convenient. Description of the Drawings

[0027] Figure 1 It is a transverse sectional view of the automatic centering device of the present application;

[0028] Figure 2 It is a longitudinal sectional view of the automatic centering device of the present application.

[0029] The reference numerals are recorded as follows: 1. Bed body; 2. Bracket; 3. Vertical sliding seat; 4. First shield; 5. Installation shield; 6. Longitudinal sliding seat; 7. Linear guide rail; 8. Drag chain; 9. Second shield; 10. Third shield; 11. Oil-free bushing; 12. Guide rod; 13. Screw hoist; 14. First servo motor; 15. Track; 16. Gear; 17. Bent plate; 18. Driving device. Detailed implementation manners

[0030] In the description of the present application, it should be understood that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "front", "rear", "left", "right", "longitudinal", "vertical", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0031] The principles and features of the present invention will be described below in conjunction with the drawings. The examples given are only used to explain the present invention and are not intended to limit the scope of the present invention.

[0032] As Figure 1 and Figure 2 shown, an automatic centering device includes a bed body 1, and a longitudinal moving assembly and a vertical moving assembly are provided on the bed body 1;

[0033] The longitudinal moving assembly includes a linear guide rail 7, a longitudinal sliding seat 6, a driving device 18 and a track 15. The two linear guide rails 7 are symmetrically arranged on the inner side walls on both sides of the bed body 1. The linear guide rail 7 is slidably connected to the longitudinal sliding seat 6. The linear guide rail 7 extends along the longitudinal direction (i.e., the length direction) of the bed body 1. The linear guide rail 7 is connected to the longitudinal sliding seat 6 through a slider. The longitudinal sliding seat 6 is connected to the driving device 18. The driving device 18 moves longitudinally along the track 15. The two ends of the track 15 are fixed on the bed body 1;

[0034] The vertical moving assembly includes a lifting device, a vertical sliding seat 3 and a guide rod 12. The lifting device is installed on the longitudinal sliding seat 6. The guide rod 12 is inserted into the longitudinal sliding seat 6. The vertical sliding seat 3 is connected to the lifting device and the guide rod 12. A support assembly for supporting a workpiece is provided at the upper end of the vertical sliding seat 3.

[0035] In this embodiment, the longitudinal sliding seat 6 is a U-shaped groove with an upward opening. The longitudinal sliding seat 6 is fixedly connected to the driving device 18 through a bent plate 17. The bent plate 17 is an L-shaped plate. One end of the bent plate 17 is fixed on the longitudinal sliding seat 6, and the other end is connected to the driving device 18. The driving device 18 is installed below the longitudinal sliding seat 6, which can not only save installation space but also ensure the stability when the longitudinal sliding seat 6 moves.

[0036] A first shield 4 is provided on the outer side wall of the vertical sliding seat 3, and a second shield 9 is provided on the longitudinal sliding seat 6. The first shield 4 and the second shield 9 cooperate to form a sealed cavity, and the lifting device and the upper end of the guide rod 12 are located in the sealed cavity.

[0037] The first shield 4 is provided outside the second shield 9. To ensure the protection and isolation effects, the first shield 4 and the second shield 9 are arranged in an overlapping and staggered manner. When the vertical sliding seat 3 moves upward, the first shield 4 and the second shield 9 are still in a sealed state, ensuring the blocking effect on debris or impurities.

[0038] An installation shield 5 is provided on the bed body 1 at the connection of the linear guide rail 7 and the longitudinal sliding seat 6. The installation shield 5 includes two protective plates arranged at an angle. One protective plate is arranged above the linear guide rail 7 and the longitudinal sliding seat 6, and the other protective plate inclines towards the U-shaped longitudinal sliding seat 6, so that the debris or impurities falling on the installation shield 5 are collected in the longitudinal sliding seat 6, which is convenient for cleaning.

[0039] A drag chain 8 is provided in the bed body 1 below the installation shield 5. The drag chain 8 is used to accommodate the pipelines of the self-aligning device. Placing wires, connecting pipes, etc. in the drag chain 8 can not only meet the longitudinal movement of the longitudinal sliding seat 6, but also avoid repeated folding of wires, etc., saving installation space and improving the service life of wires and connecting pipes.

[0040] A third shield 10 is provided below the longitudinal sliding seat 6, and the lower ends of the driving device 18 and the guide rod 12 are located in the third shield 10.

[0041] At least one guide rod 12 is provided. An oil-free bushing 11 is provided at the connection of the guide rod 12 and the longitudinal sliding seat 6. The oil-free bushing 11 realizes the guiding and positioning functions of the guide rod 12, ensuring that the guide rod 12 moves up and down along the oil-free bushing 11. In this embodiment, four guide rods 12 are provided, and the four guide rods 12 are respectively fixed at the four corners of the vertical sliding seat 3, so as to ensure the stability when the vertical sliding seat 3 moves up and down and prevent the workpiece from tilting.

[0042] The driving device 18 is a servo motor, the track 15 is a rack, a gear 16 is provided at the output end of the servo motor, and the gear 16 meshes with the rack. The gear 16 and the rack are located below the installation shield 5, so that debris and the like can be prevented from falling on them, ensuring normal meshing between the two.

[0043] The lifting device includes a first servo motor 14 and a screw hoist 13. The output end of the first servo motor 14 is connected to the screw hoist 13, and the output end of the screw hoist 13 is connected to the vertical sliding seat 3. A nut is fixed at the center of the vertical sliding seat 3, the output end of the screw hoist 13 is a screw rod, and the screw rod cooperates with the nut. The vertical movement of the vertical sliding seat 3 is realized by the forward rotation and reverse rotation of the screw rod.

[0044] There are two support assemblies. Each support assembly includes two symmetrically arranged brackets 2, and the two brackets 2 cooperate to form a V-shaped groove. An inclined support surface is provided on the bracket 2, and a protective pad is provided between the inclined support surface and the workpiece, which can not only increase the friction between the two to ensure the stability during workpiece installation, but also avoid problems such as bump damage to the workpiece. The support assembly is detachably installed on the vertical sliding seat 3, and by adjusting the distance between the two brackets 2, it can be adapted to the outer circle of workpieces with different diameters, so as to meet the fixing requirements of workpieces with different outer circle diameters.

[0045] In summary, the automatic centering device of the present application can not only automatically adjust according to the changes in the length and diameter of the workpiece, make the centers of workpieces with different diameters equal to the center of the equipment, ensure the welding or processing quality, and facilitate docking with the automated production line, etc.; at the same time, it protects the moving parts such as linear guide rails, guide rods, and sliding seats, avoids damage, improves the service life of the automatic centering device, and reduces the maintenance cost.

[0046] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An automatic centering device, comprising a machine tool bed (1), characterized in that, A longitudinal movement component and a vertical movement component are provided on the bed body (1); The longitudinal movement component includes linear guide rails (7), a longitudinal sliding seat (6), a driving device (18), and a track (15). The two linear guide rails (7) are symmetrically arranged on the inner side walls on both sides of the bed body (1). The linear guide rails (7) are slidably connected to the longitudinal sliding seat (6). The longitudinal sliding seat (6) is connected to the driving device (18). The driving device (18) longitudinally moves along the track (15). The two ends of the track (15) are fixed on the bed body (1); The vertical movement component includes a lifting device, a vertical sliding seat (3), and a guide rod (12). The lifting device is installed on the longitudinal sliding seat (6). The guide rod (12) is inserted into the longitudinal sliding seat (6). The vertical sliding seat (3) is connected to the lifting device and the guide rod (12). A support component for supporting a workpiece is provided at the upper end of the vertical sliding seat (3); A first shield (4) is provided on the outer side wall of the vertical sliding seat (3), and a second shield (9) is provided on the longitudinal sliding seat (6). The first shield (4) and the second shield (9) cooperate to form a sealed cavity. The upper ends of the lifting device and the guide rod (12) are located in the sealed cavity. The first shield (4) is provided outside the second shield (9). The first shield (4) and the second shield (9) are arranged in an overlapping and staggered manner. When the vertical sliding seat (3) moves upward, the first shield (4) and the second shield (9) are still in a sealed state; An installation shield (5) is provided on the bed body (1) at the connection between the linear guide rail (7) and the longitudinal sliding seat (6). The installation shield (5) includes two protection plates arranged at an angle. One of the protection plates is arranged above the linear guide rail (7) and the longitudinal sliding seat (6), and the other protection plate inclines towards the U-shaped longitudinal sliding seat (6) so that the debris or impurities falling on the installation shield (5) are collected in the longitudinal sliding seat (6); 2. The self-aligning device according to claim 1, characterized in that, A drag chain (8) is provided inside the bed body (1) below the installation shield (5). The drag chain (8) is used to accommodate the pipelines of the automatic centering device; 3. The self-aligning device according to claim 1, characterized in that, A third shield (10) is provided below the longitudinal sliding seat (6). The lower ends of the driving device (18) and the guide rod (12) are located inside the third shield (10); 4. The self-aligning device according to claim 1 or 3, characterized in that At least one guide rod (12) is provided. An oil-free bushing (11) is provided at the connection between the guide rod (12) and the longitudinal sliding seat (6); 5. The self-aligning device according to claim 1, characterized in that The driving device (18) is a servo motor. The track (15) is a rack. A gear (16) is provided at the output end of the servo motor. The gear (16) meshes with the rack; 6. The self-aligning device according to claim 1, wherein The lifting device includes a first servo motor (14) and a screw hoist (13). The output end of the first servo motor (14) is connected to the screw hoist (13). The output end of the screw hoist (13) is connected to the vertical sliding seat (3); 7. The self-aligning device according to claim 1, characterized in that, Two support components are provided. Each support component includes two symmetrically arranged brackets (2). The two brackets (2) cooperate to form a V-shaped groove.

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