Multidirectional clamping fixture for welding robot

Abstract

The utility model provides a multidirectional clamping fixture for a welding robot, which relates to the technical field of welding fixtures and comprises a face frame, supporting legs are arranged on the periphery of the face frame, first through grooves are formed in the opposite side walls of the face frame, the face frame is slidably connected with first rotating rods through the first through grooves, a transverse rod is arranged between every two adjacent first rotating rods, and the transverse rod is connected with the supporting legs. A second through groove is formed in the cross rod; the second rotating rod is in sliding connection with the cross rod through the second through groove, a vertical rod is arranged at one end of the second rotating rod, and a third through groove is formed in the vertical rod; the third rotating rod is in sliding connection with the vertical rod through the third through groove, and a clamping assembly used for clamping a workpiece is arranged at one end of the third rotating rod; the first rotating rod, the second rotating rod and the third rotating rod are each provided with a nut used for limiting. The clamp can adapt to various clamps at the same time, the number of the clamps is reduced, and the situation that more clamp replacement time is needed due to the fact that the clamps are stacked too much and cannot adapt to the various clamps is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of welding fixtures, in particular to a multi-directional clamping fixture for a welding robot. Background Art

[0002] Currently, welding robots are widely used in the manufacturing industry. During their operation, they require fixtures to secure the workpiece. The increasing variety and small batch size of workpieces is becoming increasingly common, and the variety of workpieces is also increasing. Each production change requires fixture replacement, resulting in a significant waste of time. Different workpieces require different fixtures, leading to a large number of fixtures in factories, placing significant pressure on their storage and management. Furthermore, the need to prepare fixtures in advance for trial production of new workpieces also wastes a significant amount of time. Utility Model Content

[0003] In order to solve the problems of fixture accumulation caused by the use of multiple different fixtures for multiple types of workpieces, and the inability to adapt to the clamping of multiple types of workpieces, which leads to a lot of time wasted in replacing fixtures, the utility model provides a multi-directional clamping fixture for a welding robot, which can adapt to multiple types of fixtures at the same time, reduce the number of fixtures, avoid excessive fixture accumulation, and avoid the inability to adapt to multiple types of fixtures, which leads to more time required for fixture replacement.

[0004] The technical solution adopted in this utility model is:

[0005] A multi-directional clamping fixture for a welding robot is provided, comprising:

[0006] A face frame, the face frame is provided with supporting legs on all four sides, and a first through slot is provided on the opposite side walls of the face frame, the face frame is slidably connected to the first rotating rod through the first through slot, a cross bar is provided between adjacent first rotating rods, and a second through slot is provided on the cross bar; a second rotating rod, the second rotating rod is slidably connected to the cross bar through the second through slot, one end of the second rotating rod is provided with a vertical rod, and a third through slot is provided on the vertical rod; a third rotating rod, the third rotating rod is slidably connected to the vertical rod through the third through slot, and one end of the third rotating rod is provided with a clamping assembly for clamping a workpiece; wherein, the first rotating rod, the second rotating rod and the third rotating rod are all provided with nuts for limiting.

[0007] In some embodiments of the present invention, the first through groove is an annular groove, and a partition is provided on the face frame located in the middle of the annular groove. Screw holes are provided at both ends of the partition, and the partition is threadedly connected to a screw through the screw holes. A fixing hole that cooperates with the screw is provided on the side wall of the face frame.

[0008] In some embodiments of the present utility model, the clamping assembly includes a clamping arm, a fixing rod, and a pressing plate. The clamping arm is disposed at one end of the third rotating rod. The clamping arm is in a "C" shape. The fixing rod is threadedly connected to the clamping arm. The pressing plate is disposed at one end of the fixing rod facing the clamping surface of the clamping arm.

[0009] In some embodiments of the present utility model, the front frame is provided with a plurality of grooves communicating with the annular groove. Each groove is internally provided with a limiting assembly. The limiting assembly includes a support rod, a torsion spring, and a limiting block. The support rod is disposed on the opposite inner walls of the front frame located in the groove. The torsion spring is sleeved on the support rod. One end of the torsion spring abuts against the front frame, and the other end is connected to the limiting block.

[0010] In some embodiments of the present utility model, the limiting block is provided with an inclined surface.

[0011] In some embodiments of the present utility model, the cross bar and the vertical bar are both provided with fourth through grooves, and the fourth through grooves communicate with the second through groove and the third through groove respectively.

[0012] In some embodiments of the present utility model, the fixing rod is provided with a handle.

[0013] In some embodiments of the present utility model, there are four first rotating rods, second rotating rods, third rotating rods, cross bars, vertical bars, and clamping assemblies respectively.

[0014] The beneficial effects of the present utility model are:

[0015] Through the settings of the cross bar, vertical bar and clamping assembly, the overall clamping fixture can clamp and fix the workpiece at different directional positions. The first through slot opened on the face frame enables the cross bar to slide on the face frame along the first through slot. After adjusting to a position suitable for the fixture to clamp the workpiece, the first rotating rod can be rotated at this time to adjust the clamping angle of the fixture. After the angle is adjusted appropriately, the cross bar is fixed and limited by rotating the nut located on the first rotating rod to prevent the cross bar from sliding and rotating spontaneously. Then, by adjusting the second rotating rod located in the second through slot on the cross bar, the vertical bar arranged on the second rotating rod slides on the cross bar along the length direction of the second through slot. During the sliding process, it can be continuously adjusted to a position more suitable for the fixture to clamp the workpiece. After adjusting the angle suitable for the fixture to clamp by rotating the second rotating rod, the nut located on the second rotating rod is tightened to prevent the vertical bar from sliding and rotating on the cross bar. Finally, by adjusting the third rotating rod located in the third through slot on the vertical bar, the clamping assembly on the third rotating rod can move up and down on the vertical bar. During the moving process, the clamping assembly can clamp the workpiece in the vertical direction. After the clamping position is adjusted appropriately, the clamping assembly is fixed and limited by adjusting the nut located on the third rotating rod to prevent the clamping assembly from sliding and rotating, which also enables the overall fixture of the present utility model to be applicable to clamping of various types of workpieces, avoiding the increase in inventory quantity caused by the increase in the number of fixture types due to different workpiece types. In addition, it can also be applicable when the workpiece is in the new product trial production, avoiding the time waste caused by preparing the fixture in advance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 Stereoscopic schematic diagram of a multi-directional clamping fixture for a welding robot;

[0018] Figure 2 Side view of the clamping assembly part in a multi-directional clamping fixture for a welding robot;

[0019] Figure 3 Structural schematic diagram of a multi-directional clamping fixture for a welding robot;

[0020] Figure 4 For Figure 3 Partial enlarged schematic diagram at A in

[0021] Reference numerals:

[0022] 1 - Frame, 10 - First through groove, 11 - First rotating rod, 12 - Partition board, 13 - Screw rod, 14 - Groove, 15 - Support rod, 16 - Torsion spring, 17 - Limit block, 2 - Leg, 3 - Cross bar, 30 - Second through groove, 31 - Fourth through groove, 32 - Second rotating rod, 4 - Vertical rod, 40 - Third through groove, 41 - Third rotating rod, 5 - Clamping assembly, 50 - Clamping arm, 51 - Fixed rod, 52 - Pressing plate, 53 - Handle, 6 - Nut. Detailed implementation mode

[0023] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element 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 invention.

[0024] The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the present invention.

[0025] The embodiments of the utility model will be described in detail below with reference to the drawings.

[0026] Embodiment

[0027] As Figure 1 And Figure 2 shown, this embodiment provides a multi - directional clamping fixture for a welding robot, including:

[0028] Frame 1, support legs are provided on all four sides of the frame 1, first through grooves 10 are opened on the opposite side walls of the frame 1, the frame 1 is slidably connected with a first rotating rod 11 through the first through groove 10, a cross bar 3 is provided between adjacent first rotating rods 11, and a second through groove 30 is opened on the cross bar 3;

[0029] Second rotating rod 32, the second rotating rod 32 is slidably connected with the cross bar 3 through the second through groove 30, one end of the second rotating rod 32 is provided with a vertical rod 4, and a third through groove 40 is opened on the vertical rod 4; [[ID= thirty - one]]

[0030] The third rotating rod 41 is slidably connected to the vertical rod 4 through the third through groove 40. A clamping assembly 5 for clamping a workpiece is provided at one end of the third rotating rod 41;

[0031] Among them, nuts 6 for limiting are provided on the first rotating rod 11, the second rotating rod 32, and the third rotating rod 41.

[0032] In this embodiment, the face frame 1 is a frame body with a hollow middle part. First through grooves 10 are respectively opened on the opposite inner walls of the face frame 1 at its hollow part, and the first through grooves 10 penetrate the side walls of the face frame 1. The first rotating rod 11 is slidably connected to the face frame 1. Both ends of the first rotating rod 11 are respectively located in the first through grooves 10 opened on both sides of the face frame 1, so that the first rotating rod 11 can slide on the face frame 1 through the first through grooves 10, and the angle of the vertical rod 4 on the cross bar 3 can also be adjusted by rotating the first rotating rod 11, so that the clamp on the vertical rod 4 can complete clamping at different clamping angles subsequently. During the sliding process of the first rotating rod 11, in order to prevent the first rotating rod 11 from falling off the face frame 1, threads are provided on the outer walls of the first rotating rod 11 near its two ends, and then nuts 6 are arranged by means of threaded connection. When the position of the first rotating rod 11 is adjusted appropriately, the first rotating rod 11 is locked on the face frame 1 by rotating the nuts 6 at both ends of the first rotating rod 11, and by means of frictional limitation, the first rotating rod 11 is prevented from sliding and rotating spontaneously on the face frame 1. Similarly, the vertical rod 4 on the cross bar 3 is driven by the second rotating rod 32 located in the second through groove 30 opened on the cross bar 3 to realize the sliding and rotation of the vertical rod 4. The nut 6 on the second rotating rod 32 is used to lock the second rotating rod 32 on the cross bar 3 by means of frictional limitation after the vertical rod 4 is adjusted to a suitable position, so as to prevent the vertical rod 4 from sliding and rotating spontaneously. The clamping assembly 5 located on the vertical rod 4 is driven by the third rotating rod 41 located in the third through groove 40 opened on the vertical rod 4, so that the clamping assembly 5 can move in the vertical direction and can also rotate in the third through groove 40 to adjust the angle, and finally it is locked by the nut 6 on the third rotating rod 41. Therefore, the utility model can be applicable to clamping workpieces of multiple varieties, including conventional welding workpieces to be processed and special-shaped workpieces to be processed (such as spiral workpieces to be processed and three-dimensional S-shaped workpieces to be processed, etc.). Compared with preparing clamps according to workpieces of different varieties, it can reduce the inventory management problem after the increase in the number of furniture, and reduce the time waste caused by the need to replace and install new clamps to be applicable to new workpieces.

[0033] Further, as Figure 1 and Figure 3As shown, the first through groove 10 is an annular groove. A partition 12 is provided on the face frame 1 at the middle of the annular groove. Screw holes are opened at both ends of the partition 12. The partition 12 is threadedly connected with a screw rod 13 through the screw holes. Fixing holes matching with the screw rod 13 are opened on the side wall of the face frame 1.

[0034] In this embodiment, the first through groove 10 is selected as an annular groove. A partition 12 is arranged in the middle part of the annular groove, so that the cross-section of the face frame 1 at the partition 12 is in a square shape. The purpose of setting the annular groove is that when the number of workpieces to be clamped increases, and among them, the workpieces clamped by some jigs will not remove the workpieces clamped by the jigs too quickly compared with several adjacent jigs during the processing, and then new workpieces need to be clamped and processed by the jigs. Therefore, for the jigs on both sides of the face frame 1, when the workpieces need to be clamped on these jigs, they will move a small distance, resulting in more troublesome installation. So, when the jigs on both sides of the face frame 1 move to the two side edges close to the first through groove 10, the tightness of the adjusting nut 6 can be adjusted first, and then the first rotating rod 11 is moved in the opposite direction from the groove communicated with the other side of the annular groove. It should be noted that when the first rotating rod 11 is to be moved back in the annular groove, the screw rod 13 on the fixing hole needs to be loosened in advance to disconnect the screw rod 13 from the partition 12, so that the first rotating rod 11 can move back in the annular groove in the opposite direction. When the cross bar 3 does not need to be moved continuously, the screw rod 13 is passed through the fixing hole and threadedly connected with the partition 12 through the screw hole on the partition 12 to achieve the effect of supporting the partition 12. In addition, when one of the first rotating rods 11 moves back, it will pass above other cross bars 3, and the vertical rods 4 above other cross bars 3 will block the passing cross bar 3. Therefore, when one of the cross bars 3 moves back, the first rotating rod 11 on other cross bars 3 is rotated so that the vertical rod 4 will not affect the position adjustment of the cross bar 3 to be moved.

[0035] In the above embodiment, screw holes are respectively opened on the end faces of both ends of the partition 12 along the normal direction, so that both ends of the partition 12 are threadedly connected with the screw rod 13 through the screw holes. Fixing holes communicated with the annular groove are opened on the face frame 1, and the fixing holes are used to cooperate with the screw rod 13 to play a role in supporting the partition 12. It should be noted that when the number of screw rods 13 at both ends of the partition 12 is one respectively, if the central axes of the screw rods 13 at both ends coincide, the partition 12 will rotate around the central axis of the screw rod 13, resulting in the partition 12 affecting the sliding of the first rotating rod 11 in the annular groove. Therefore, it is necessary to ensure that the central axes of the screw rods 13 at both ends of the partition 12 do not coincide, so as to prevent the partition 12 from rotating spontaneously when only one screw rod 13 is used at both ends of the partition 12.

[0036] Further, asFigure 2 As shown in the figure, the clamping assembly 5 includes a clamping arm 50, a fixing rod 51 and a pressing plate 52. The clamping arm 50 is arranged at one end of the third rotating rod 41. The clamping arm 50 is in a "C" shape. The fixing rod 51 is threadedly connected to the clamping arm 50. The pressing plate 52 is arranged at one end of the fixing rod 51 facing the clamping surface of the clamping arm 50.

[0037] In this embodiment, by adjusting the tightness of the nut 6, the third rotating rod 41 slides on the vertical rod 4 through the third through groove 40. The sliding of the third rotating rod 41 can adjust the clamping position of the fixture on the workpiece in the vertical direction. After the position is adjusted appropriately, lock the nut 6 to prevent the third rotating rod 41 from sliding and rotating under the action of gravity. At this time, by rotating the fixing rod 51 located on the clamping arm 50, the fixing rod 51 is rotated to move in the vertical direction, so that the part of the fixing rod 51 located inside the clamping arm 50 becomes less and less, so as not to hinder the workpiece from being loaded into the clamping arm 50. After the workpiece can enter the clamping arm 50, then rotate the fixing rod 51 so that the fixing rod 51 moves towards the workpiece located inside the clamping arm 50 until the pressing plate 52 on the fixing rod 51 clamps the workpiece located inside the clamping arm 50 stably, and then stop adjusting the fixing rod 51.

[0038] Furthermore, as Figure 3 and Figure 4 shown, the face frame 1 is provided with a plurality of grooves 14 communicating with the annular groove. A limiting component is arranged inside each groove 14. The limiting component includes a support rod 15, a torsion spring 16 and a limiting block 17. The support rod 15 is arranged on the opposite inner walls of the face frame 1 located in the groove 14; the torsion spring 16 is sleeved on the support rod 15. One end of the torsion spring 16 abuts against the face frame 1, and the other end is connected to the limiting block 17.

[0039] Multiple grooves 14 are provided on the face frame 1 and are distributed along a straight line. Each groove 14 is located within the first through groove 10, that is, on the part of the bottom of the face frame 1 within the first through groove 10. The gaps between each groove 14 are equal. A support rod 15 connected to the face frame 1 is arranged inside each groove 14. The length direction of the support rod 15 is parallel to the length direction of the first rotating rod 11. A torsion spring 16 is sleeved on the support rod 15. One end of the torsion spring 16 abuts against the part of the face frame 1 located within the groove 14, and the other end is connected to the limit block 17. When the torsion spring 16 is in a free state, part of the structure of the limit block 17 is located outside the groove 14 at this time, and it can limit the first rotating rod 11 after being locked and limited by the nut 6. It should be noted here that there is a certain included angle between the part of the limit block 17 located outside the groove 14 and the face frame 1, which can prevent the first rotating rod 11 from moving slightly due to the influence of processing during the workpiece processing, and thus the first rotating rod 11 can be limited by the limit block 17. When it is necessary to adjust the movement of the first rotating rod 11 in the annular groove, only need to loosen the nut 6, and drive the vertical rod 4 located on the first rotating rod 11 to move through the first rotating rod 11. During the movement, the first rotating rod 11 will pass through the groove 14 one by one and squeeze the limit block 17 in the groove 14. After being squeezed, the limit block 17 will squeeze the torsion spring 16 on the support rod 15, so that the limit block 17 can rotate around the central axis of the support rod 15 within the groove 14, which enables the first rotating rod 11 to move in one direction within the annular groove. If the first rotating rod 11 needs to move in the reverse direction, it will be limited by the limit block 17 that rebounds and restores under the action of the subsequent torsion spring 16.

[0040] In the above embodiment, the groove 14 is opened on the inner bottom of the face frame 1 located in the annular groove, and each groove 14 communicates with the annular groove. When the limit block 17 in the groove 14 rotates, it is necessary to ensure that the length of the groove 14 is slightly greater than the length of the limit block 17 to prevent the limit block 17 from being unable to rotate into the groove 14.

[0041] Further, as Figure 4 shown, the limit block 17 is provided with an inclined surface.

[0042] In this embodiment, one end of the limit block 17 facing the partition 12 is set as an inclined surface. The limit block 17 provided with the inclined surface can better limit the first rotating rod 11 and can also reduce the material cost consumption.

[0043] Further, as Figure 2 shown, fourth through grooves 31 are opened on both the cross bar 3 and the vertical rod 4, and the fourth through grooves 31 communicate with the second through groove 30 and the third through groove 40 respectively.

[0044] In this embodiment, fourth through slots 31 are additionally formed on the outer walls of the cross bar 3 and the vertical bar 4, and the fourth through slots 31 are respectively communicated with the second through slot 30 and the third through slot 40. During the specific use process, a fourth rotating rod can be additionally arranged through the additionally formed fourth through slots 31, aiming to increase more clamping components 5 so as to achieve the effect of clamping more workpieces by the fixture.

[0045] Further, as Figure 2 shown, a handle 53 is provided on the fixed rod 51.

[0046] In this embodiment, a handle 53 is arranged at one end of the fixed rod 51, which is convenient for the staff to hold the fixed rod 51 and rotate it.

[0047] Further, there are four first rotating rods 11, second rotating rods 32, third rotating rods 41, cross bars 3, vertical bars 4 and clamping components 5.

[0048] In this embodiment, the numbers of the first rotating rod 11, the second rotating rod 32, the third rotating rod 41, the cross bar 3, the vertical bar 4 and the clamping component are all selected as four, which is convenient for maintaining the normal use of the clamping tool.

[0049] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Without conflict, the embodiments of this application and the features in the embodiments can be arbitrarily combined with each other. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A multi-directional clamping fixture for a welding robot, characterized in that, Comprising: A face frame, support legs are provided on all four sides of the face frame, first through slots are opened on opposite side walls of the face frame, a first rotating rod is slidably connected to the face frame through the first through slots, a cross bar is provided between adjacent first rotating rods, and a second through slot is opened on the cross bar; a second rotating rod, the second rotating rod is slidably connected to the cross bar through the second through slot, a vertical rod is provided at one end of the second rotating rod, and a third through slot is opened on the vertical rod; a third rotating rod, the third rotating rod is slidably connected to the vertical rod through the third through slot, and a clamping assembly for clamping a workpiece is provided at one end of the third rotating rod; wherein, nuts for limiting are provided on the first rotating rod, the second rotating rod and the third rotating rod.

2. The multi-directional clamping fixture for a welding robot according to claim 1, characterized in that, The first through slot is an annular slot, a partition plate is provided on the face frame at the middle of the annular slot, screw holes are opened at both ends of the partition plate, the partition plate is threadedly connected with a screw rod through the screw holes, and fixing holes matched with the screw rod are opened on the side wall of the face frame.

3. The multi-directional clamping fixture for a welding robot according to claim 2, wherein, The clamping assembly includes a clamping arm, a fixing rod and a pressing plate, the clamping arm is arranged at one end of the third rotating rod, the clamping arm is in a "C" shape, the fixing rod is threadedly connected to the clamping arm, and the pressing plate is arranged at one end of the fixing rod facing the clamping surface of the clamping arm.

4. The multi-directional clamping fixture for a welding robot according to claim 3, characterized in that, The face frame is provided with a plurality of grooves communicated with the annular slot, and a limiting assembly is arranged inside each groove. The limiting assembly includes a support rod, a torsion spring and a limiting block. The support rod is arranged on the opposite inner walls of the face frame in the groove; the torsion spring is sleeved on the support rod, one end of the torsion spring abuts against the face frame, and the other end is connected to the limiting block.

5. The multi-directional clamping fixture for a welding robot according to claim 4, characterized in that, The limiting block is provided with an inclined surface.

6. The multi-directional clamping fixture for a welding robot according to claim 1 or 5, characterized in that Fourth through slots are opened on both the cross bar and the vertical rod, and the fourth through slots are respectively communicated with the second through slot and the third through slot.

7. The multi-directional clamping fixture for a welding robot according to claim 3, characterized in that, A handle is provided on the fixing rod.

8. The multi-directional clamping fixture for a welding robot according to claim 6, characterized in that, The first rotating rod, the second rotating rod, the third rotating rod, the cross bar, the vertical rod and the clamping assembly are all four in number.

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