Turnover positioner

Abstract

The invention discloses a turnover positioner, which relates to the technical field of welding tools and comprises a C-shaped rolling frame, a partial gear ring, a supporting wheel, a C-shaped support, a driving assembly and a clamp. The outer side of the C-shaped rolling frame is provided with a partial cylindrical surface I; a part of the gear ring is fixed to the C-shaped rolling frame, and the part of the gear ring and the part of the cylindrical face I are coaxial. The multiple supporting wheels are used for supporting the partial cylindrical surface I in a rolling mode and supporting different circumferential positions of the partial cylindrical surface I. The C-shaped support is used for installing the supporting wheel, and the supporting wheel is rotationally installed on the C-shaped support. The driving assembly is used for driving the C-shaped rolling frame to rotate and comprises an output gear, and the output gear is meshed with part of the gear ring. The clamp is used for fixing a workpiece and fixed to the C-shaped rolling frame. Compared with the prior art, the stability of the workpiece overturning process can be improved, and the position control precision of the workpiece overturning process can also be improved.

Description

Technical Field

[0001] The invention relates to the technical field of welding tooling, in particular to a turnover positioner. Background Art

[0002] In order to achieve multi-sided welding of large workpieces such as vehicle frames, it is necessary to flip the workpiece after welding one side. Suspension flipping is a common flipping method, but this method is unsafe and can easily cause injuries. In addition, the workpiece is prone to bumping during the flipping process, causing damage to the workpiece surface. Summary of the invention

[0003] The purpose of the present invention is to provide a turnover positioner to improve the stability of a workpiece turnover process.

[0004] To achieve the above object, the present invention provides the following solutions:

[0005] The invention discloses a flip positioner, comprising:

[0006] A C-shaped roller frame with a partial cylindrical surface Ⅰ on its outer side;

[0007] A partial toothed ring fixed on the C-shaped rolling frame, wherein the partial toothed ring is coaxial with the partial cylindrical surface I;

[0008] A plurality of support wheels for rolling support of the partial cylindrical surface I, wherein the plurality of support wheels respectively support different circumferential positions of the partial cylindrical surface I;

[0009] A C-shaped support for mounting the support wheel, wherein the support wheel is rotatably mounted on the C-shaped support;

[0010] a drive assembly for driving the C-shaped roller to rotate, the drive assembly comprising an output gear, the output gear meshing with the partial gear ring;

[0011] A fixture for fixing a workpiece, wherein the fixture is fixed on the C-shaped rolling frame.

[0012] Preferably, along the axial direction of the C-shaped rolling frame, a rib is provided at each end of the partial cylindrical surface I, and the rib is used to limit the mutual position with the supporting wheel.

[0013] Preferably, the outer side surface of the partial tooth ring is a partial tooth surface.

[0014] Preferably, the flipping positioner also includes a radial limiting assembly, which includes a first roller and a first mounting seat; the inner side of the C-type roller frame and / or the partial gear ring has a partial cylindrical surface II; the first roller is used to roll in contact with the partial cylindrical surface II, the first roller is rotatably mounted on the first mounting seat, and the first mounting seat is fixed on the C-type support.

[0015] Preferably, the radial limiting components are divided into two groups, each group includes a plurality of the radial limiting components, and the two groups of the radial limiting components are respectively located on both axial sides of the C-shaped roller frame.

[0016] Preferably, the flip positioner also includes an axial limit assembly, which includes a second roller and a second mounting seat; the second roller is used to rollingly contact the end face of the C-type roller or the partial gear ring, the second roller is rotatably mounted on the second mounting seat, and the second mounting seat is fixed on the C-type support.

[0017] Preferably, the axial limit assembly is divided into two groups, each group includes a plurality of the axial limit assemblies, and the two groups of the axial limit assemblies are respectively located on both axial sides of the C-shaped roller frame.

[0018] Preferably, the driving assembly includes a servo motor and a reducer, the output shaft of the servo motor is connected to the input shaft of the reducer, and the output gear is fixed on the output shaft of the reducer.

[0019] Preferably, the output gear is located directly below the rotation axis of the C-shaped roller.

[0020] Preferably, the C-shaped rolling frame and the C-shaped support are both semicircular.

[0021] Compared with the related art, the present invention has achieved the following technical effects:

[0022] The drive assembly drives part of the gear ring to rotate through the output gear, thereby driving the C-type roller and the workpiece to rotate, meeting the multi-angle processing requirements of robot welding. The support wheel is in rolling contact with part of the cylindrical surface I, which is used to support the C-type roller and reduce the rotation friction of the C-type roller. Through the multi-point support of multiple support wheels, the rotation trajectory of the C-type bracket is determined, the stability of the C-type bracket during the rotation process is improved, and then the stability of the workpiece during the rotation process is improved. The drive assembly can accurately control the circumferential position of the C-type roller by controlling the number of rotations of the output gear, thereby improving the circumferential positioning accuracy of the workpiece.

[0023] In the preferred embodiment of the present invention, the driving assembly includes a servo motor and a reducer, the output shaft of the servo motor is connected to the input shaft of the reducer, and the output gear is fixed to the output shaft of the reducer. By providing a reducer, the rotation speed of the rack is reduced, thereby improving the circumferential position control accuracy of the C-type roller and the workpiece. By selecting a servo motor as the driving motor, the circumferential position control accuracy of the C-type roller and the workpiece can be further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the drawings required for use in the embodiments 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 these drawings without paying creative work.

[0025] Figure 1 It is a schematic diagram of a position state of two flip positioners and a workpiece;

[0026] Figure 2 It is a schematic diagram of another position state of two flip positioners and a workpiece;

[0027] Figure 3 for Figure 1 A schematic diagram of a flip positioner;

[0028] Figure 4 for Figure 1 Schematic diagram of another flip positioner.

[0029] In the figure: 100-flip positioner; 200-workpiece; 11-C-type roller; 12-partial gear ring; 13-C-type support; 14-drive assembly; 15-radial limit assembly; 16-axial limit assembly; 111-T-type reinforcement structure; 141-servo motor; 142-reducer; 151-first roller; 152-first mounting seat; 161-second roller; 162-second mounting seat. DETAILED DESCRIPTION

[0030] 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.

[0031] The purpose of the present invention is to provide a turnover positioner to improve the stability of a workpiece turnover process.

[0032] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments. Figure 1 In the process, the workpiece (frame) is in a horizontal state. Figure 2 In the figure, the workpiece is in a vertical state.

[0033] Reference Figure 1 to Figure 4 The present embodiment provides a flip positioner 100, including a C-shaped roller frame 11, a partial gear ring 12, a support wheel, a C-shaped support 13, a drive assembly 14 and a clamp.

[0034] The C-type roller 11 has a partial cylindrical surface I on its outer side. The partial toothed ring 12 is fixed on the C-type roller 11, and the partial toothed ring 12 is coaxial with the partial cylindrical surface I. A plurality of support wheels are used to roll and support the partial cylindrical surface I, and the plurality of support wheels respectively support different circumferential positions of the partial cylindrical surface I. The C-type support 13 is used to install the support wheels, and the support wheels are rotatably installed on the C-type support 13. The drive assembly 14 is used to drive the C-type roller 11 to rotate, and the drive assembly 14 includes an output gear, and the output gear is meshed with the partial toothed ring 12. The fixture is used to fix the workpiece 200, and the fixture is fixed on the C-type roller 11.

[0035] The working principle of the flip positioner 100 of this embodiment is as follows:

[0036] The drive assembly 14 drives the partial gear ring 12 to rotate through the output gear, thereby driving the C-type roller 11 and the workpiece 200 to rotate, meeting the multi-angle processing requirements during robot welding. The support wheel is in rolling contact with part of the cylindrical surface I, which is used to support the C-type roller 11 and reduce the rotation friction of the C-type roller 11. Through the multi-point support of multiple support wheels, the rotation trajectory of the C-type bracket is determined, the stability of the C-type bracket during the rotation process is improved, and then the stability of the workpiece 200 during the rotation process is improved. The drive assembly 14 can accurately control the circumferential position of the C-type roller 11 by controlling the number of rotations of the output gear, thereby improving the circumferential positioning accuracy of the workpiece 200.

[0037] As a possible example, in this embodiment, a flange is provided at each end of the partial cylindrical surface I along the axial direction of the C-type roller 11. When the C-type roller 11 is axially offset, the flange is used to limit the position of the support wheel. By providing two flanges, the axial position of the C-type roller 11 is ensured to improve the safety of the processing process. The flange does not contact the support wheel in normal working state to reduce the wear of the support wheel.

[0038] As a possible example, in this embodiment, the outer side surface of the partial tooth ring 12 is a partial tooth surface. It is understandable that those skilled in the art may also choose to make the inner side surface of the partial tooth ring 12 a partial tooth surface.

[0039] As a possible example, in this embodiment, the flip positioner 100 further includes a radial limit assembly 15, which includes a first roller 151 and a first mounting seat 152. The inner side of the C-shaped roller frame 11 and / or a portion of the gear ring 12 has a partial cylindrical surface II. The first roller 151 is used for rolling contact with the partial cylindrical surface II, and the first roller 151 is rotatably mounted on the first mounting seat 152, and the first mounting seat 152 is fixed on the C-shaped support 13.

[0040] Under the outer limit of the supporting wheel and the inner limit of the first roller 151, the C-shaped roller frame 11 maintains a stable radial position during the rotation process.

[0041] As a possible example, in this embodiment, the radial limiting components 15 are divided into two groups, each group includes a plurality of radial limiting components 15, and the two groups of radial limiting components 15 are respectively located on both axial sides of the C-type roller 11. The two groups of radial limiting components 15 respectively limit the inner sides of the axial ends of the C-type roller 11, thereby further improving the stability of the C-type roller 11 during the rotation process.

[0042] As a possible example, in this embodiment, the flip positioner 100 further includes an axial limit assembly 16, which includes a second roller 161 and a second mounting seat 162. The second roller 161 is used to roll in contact with the end surface of the C-shaped roller frame 11 or a portion of the gear ring 12, and the second roller 161 is rotatably mounted on the second mounting seat 162, and the second mounting seat 162 is fixed on the C-shaped support 13.

[0043] By providing the axial limit assembly 16 , the axial positioning accuracy of the C-shaped bracket and the workpiece 200 is improved.

[0044] As a possible example, in this embodiment, the axial limiting components 16 are divided into two groups, each group includes a plurality of axial limiting components 16 , and the two groups of axial limiting components 16 are respectively located on two axial sides of the C-shaped roller frame 11 .

[0045] The two groups of axial positioning components limit the C-type roller 11 from both sides respectively, so that the axial thrusts applied to the C-type roller 11 by the two groups cancel each other out, and further improve the axial positioning accuracy of the C-type roller 11 and the workpiece 200.

[0046] As a possible example, in this embodiment, the driving assembly 14 includes a driving motor and a reducer 142, the output shaft of the driving motor is connected to the input shaft of the reducer 142, and the output gear is fixed to the output shaft of the reducer 142. By providing the reducer 142, the rotation speed of the rack is reduced, thereby improving the circumferential position control accuracy of the C-type roller 11 and the workpiece 200.

[0047] The driving motor is preferably a servo motor 141 to further improve the circumferential position control accuracy of the C-shaped roller 11 and the workpiece 200 .

[0048] As a possible example, in this embodiment, the output gear is located directly below the rotation axis of the C-shaped roller frame 11. According to different actual needs, those skilled in the art may also select other installation positions.

[0049] As a possible example, in this embodiment, the C-shaped roller 11 and the C-shaped support 13 are both semicircular, which can achieve ±90° flipping of the workpiece 200. However, the actual implementation is not limited to this. For example, the central angles of the C-shaped roller 11 and the C-shaped support 13 are both 120°.

[0050] As a possible example, in this embodiment, a T-shaped reinforcement structure 111 is provided inside the C-shaped rolling frame 11 to improve the shape stability of the C-shaped rolling frame 11. According to different actual needs, those skilled in the art may also select reinforcement structures of other shapes.

[0051] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A flip positioner, characterized in that: include: A C-shaped roller frame with a partial cylindrical surface Ⅰ on its outer side; A partial toothed ring fixed on the C-shaped rolling frame, wherein the partial toothed ring is coaxial with the partial cylindrical surface I; A plurality of support wheels for rolling support of the partial cylindrical surface I, wherein the plurality of support wheels respectively support different circumferential positions of the partial cylindrical surface I; A C-shaped support for mounting the support wheel, wherein the support wheel is rotatably mounted on the C-shaped support; a drive assembly for driving the C-shaped roller to rotate, the drive assembly comprising an output gear, the output gear meshing with the partial gear ring; A fixture for fixing a workpiece, wherein the fixture is fixed on the C-shaped rolling frame.

2. The flip positioner according to claim 1, characterized in that: Along the axial direction of the C-shaped rolling frame, a rib is respectively provided at both ends of the partial cylindrical surface I, and the rib is used to limit the mutual position with the supporting wheel.

3. The flip positioner according to claim 1, characterized in that: The outer side surface of the partial tooth ring is a partial tooth surface.

4. The flip positioner according to claim 1, characterized in that: It also includes a radial limiting assembly, which includes a first roller and a first mounting seat; the inner side of the C-type roller frame and / or the partial gear ring has a partial cylindrical surface II; the first roller is used for rolling contact with the partial cylindrical surface II, the first roller is rotatably mounted on the first mounting seat, and the first mounting seat is fixed on the C-type support.

5. The flip positioner according to claim 4, characterized in that: The radial limiting components are divided into two groups, each group includes a plurality of the radial limiting components, and the two groups of the radial limiting components are respectively located on both axial sides of the C-shaped roller frame.

6. The flip positioner according to claim 1, characterized in that: It also includes an axial limiting assembly, which includes a second roller and a second mounting seat; the second roller is used to roll in contact with the end face of the C-type roller frame or the partial gear ring, the second roller is rotatably mounted on the second mounting seat, and the second mounting seat is fixed on the C-type support.

7. The flip positioner according to claim 6, characterized in that: The axial limit assemblies are divided into two groups, each group includes a plurality of axial limit assemblies, and the two groups of axial limit assemblies are respectively located on both axial sides of the C-shaped roller frame.

8. The flip positioner according to claim 1, characterized in that: The driving assembly includes a servo motor and a reducer, the output shaft of the servo motor is connected to the input shaft of the reducer, and the output gear is fixed on the output shaft of the reducer.

9. The flip positioner according to claim 8, characterized in that: The output gear is located directly below the rotation axis of the C-shaped roller.

10. The flip positioner according to claim 1, characterized in that: The C-shaped rolling frame and the C-shaped support are both semicircular.

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