Special tool for rotary frame welding robot

Abstract

The utility model provides a special tool for a rotary frame welding robot, which belongs to the technical field of welding and comprises a frame and a positioning mechanism detachably arranged on the frame. The frame is connected with an external driving device through supporting bases on the two sides, so that the frame can rotate in the axial direction. The positioning mechanism comprises clamp bodies, a base frame and a center base connected to the center of the base frame, the two clamp bodies move relatively on the two sides of the center base, a workpiece is clamped between the two clamp bodies, and the center base and the transverse center line of the frame are collinear. The device has the beneficial effects that the device can be linked with a welding robot, a traditional processing method is replaced, the consistency of the welding size quality and the welding bead size is ensured, the deformation of a workpiece is prevented, and the labor intensity of an operator is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of welding, in particular to a special tooling for a rotating frame welding robot. Background Art

[0002] The workpiece processed by the utility model comprises a panel and two connecting plates, the two connecting plates are plugged at the same side ends of the panel, and the intersections of the connecting plates and the panel are welded to complete the processing of the workpiece.

[0003] The prior art uses a manual welding process, but this method has the following defects:

[0004] 1. One end of the panel is horizontally set, and the other end is bent downward. The connecting plate is plugged into the horizontal end of the panel. During processing, the other end of the panel is bent and the connecting plate also occupies a certain height, so the entire panel cannot be placed horizontally. Manual welding is prone to irregular welds, misalignment or incomplete penetration and other quality problems, which cannot ensure the neatness of the workpiece appearance and reduce the welding quality;

[0005] 2. The labor production cost is high, and operators need to undergo training and skills training before they can start working. There are certain dangers in the welding process, such as spark splashing, oxygen leakage, etc. If the operation is improper, it will cause safety accidents;

[0006] Moreover, welding work usually needs to be carried out in a high temperature, high pressure and toxic gas environment, which poses certain hazards to the health of the operator. Utility Model Content

[0007] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a special tooling for a rotating frame welding robot, which can be linked with the welding robot to replace the traditional processing method, ensure the consistency of welding size quality and weld size, prevent workpiece deformation, and reduce the labor intensity of the operator.

[0008] In order to solve the above technical problems, the technical solution adopted by the utility model is: a special tooling for a rotating frame welding robot, comprising a frame and a positioning mechanism detachable from the frame;

[0009] The frame is connected to an external driving device through support seats on both sides, so that the frame can rotate axially;

[0010] The positioning mechanism includes a clamping body, a base frame and a center seat connected to the center of the base frame. The two clamping bodies move relatively on both sides of the center seat, and the workpiece is clamped between the two clamping bodies. The center seat is arranged colinearly with the horizontal center line of the frame.

[0011] Furthermore, a support beam is transversely connected in the frame, and a positioning plate is detachably connected to the support beam for supporting the end of the workpiece.

[0012] Furthermore, the positioning mechanism includes two lead screws which rotate on both sides of the base frame respectively, and the connecting parts at the lower ends of the two clamp bodies are respectively connected to the corresponding lead screw threads.

[0013] Furthermore, the threads of the two lead screws are opposite, and the adjacent ends of the two lead screws are gathered in the center seat through the lead screw sockets.

[0014] Furthermore, the screw sleeve is sleeved in the center seat, and a groove corresponding to the protrusion of the center seat inner cavity is arranged around the outside of the screw sleeve, and the ends of the two screws are respectively connected to the two ends of the inner cavity of the screw sleeve through positioning pins.

[0015] Furthermore, sliding grooves are provided on both side walls of the base frame, and both ends of the clamp body extend downward and engage with both sides of the base frame. Slide plates are connected to the lower parts of both ends of the clamp body, and the slide plates engage with the upper walls of the sliding grooves to enable the clamp body to slide along the sliding grooves.

[0016] Furthermore, an oil inlet hole communicating with the inner cavity is provided at the upper end of the center seat.

[0017] Furthermore, a friction pad is provided on the clamping plate at the side end of the clamp body.

[0018] Furthermore, tapered holes matching with the clamping arms in the external drive device are provided on both sides of the support seat.

[0019] Furthermore, at least two positioning mechanisms are provided for fixing the workpiece in sections.

[0020] The advantages and positive effects of the utility model are:

[0021] 1. Due to the adoption of the above technical solution, through the setting of multiple positioning mechanisms, the workpiece can be fixed in sections to prevent the workpiece from running and deforming. The base frame is connected to the upper end of the frame, leaving space for the downward bent end of the panel, so that the workpiece can be placed flat on the frame. The positioning plate can abut the end of the panel to achieve further positioning and prevent the panel from tilting;

[0022] The base frame and the positioning plate can be detachably connected to the frame by bolts, thereby increasing its adaptability and being adjustable according to the length of the workpiece.

[0023] 2. In the positioning mechanism, the center seat is set as a reference for the relative movement of the two clamps, so that the workpiece can always be fixed in the center of the frame, and the workpiece can be rotated axially through an external drive device. The two screws are connected by a screw sleeve to achieve the common rotation of two oppositely threaded screws, driving the two clamps to move synchronously. The setting of the oil inlet hole on the center seat can make the sliding of the screw sleeve on the center seat smoother and without jamming.

[0024] 3. The frame is connected to the external drive device through the support seat and linked to the welding robot, and the welding robot is used for welding;

[0025] It can reduce the operator's workload and production costs. The welding robot can work continuously and ensure uniform and stable welding quality.

[0026] It can improve operational safety and avoid safety accidents caused by improper manual welding;

[0027] To improve the working environment, the welding robot can work in a closed area to prevent the operator from being exposed to harmful gases, noise and radiation generated during the welding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a top view of the structure of the utility model;

[0029] Figure 2 It is a detailed view of part A of the utility model;

[0030] Figure 3 It is a schematic diagram of the positioning mechanism of the utility model;

[0031] Figure 4 It is a schematic diagram of the base frame of the utility model;

[0032] Figure 5 It is a schematic diagram of the clamp of the utility model;

[0033] Figure 6 This is a schematic diagram of the screw connection of the utility model;

[0034] Figure 7 This is a schematic diagram of the linkage between the utility model and the welding robot;

[0035] Figure 8 It is a schematic diagram of the workpiece structure of the utility model.

[0036] In the figure:

[0037] 1. Frame; 101. Support beam; 102. Support seat; 2. Positioning plate;

[0038] 3. Base frame; 31. Sliding slot;

[0039] 4. Clamp body; 41. Clamping plate; 42. Support part; 43. Connecting part;

[0040] 5. Friction pad; 6. Nut seat; 7. Lead screw;

[0041] 8. Center seat; 81. Oil inlet hole; 9. Slide plate; 10. Screw socket. DETAILED DESCRIPTION

[0042] The utility model is further described below in conjunction with embodiments and drawings.

[0043] like Figures 1 to 8 As shown, this embodiment provides a special tooling for a rotating frame welding robot, comprising a frame 1 and a positioning mechanism detachable from the frame 1;

[0044] The frame 1 is connected to the external driving device through the support bases 102 arranged on both sides thereof. A square hole is provided in the center of the support base 102 for the convenience of the operator to grasp. Conical holes are provided on both sides of the support base 102. The support base 102 is connected to the frame 1 by bolts.

[0045] The external driving device adopts two rotating arms, and the rotating shaft of the rotating arm is driven by a motor. Clamping arms are arranged on the two rotating shafts. The clamping arms are two conical parts that can shrink inward at the same time. The clamping arms are connected with the conical holes of the support seat 102 to enable the frame 1 to rotate axially. In this embodiment, one motor is arranged and connected to the rotating shaft of the right rotating arm. Since the rotating arm and the clamping arm are both existing technologies, they will not be repeated here.

[0046] A plurality of cross beams are connected to the hollow part of the frame 1 to prevent deformation of the frame 1 and improve the strength of the frame 1. A support beam 101 is transversely connected to the plurality of cross beams. The transverse center line of the support beam 101 coincides with the transverse center line of the frame 1. A positioning plate 2 is detachably connected to the support beam 101 for resisting and positioning the end of the workpiece.

[0047] The side plate and the bottom plate of the positioning plate 2 are perpendicular to each other and are "L" shaped. Reinforcing ribs are provided at the junction of the side plate and the bottom plate. A plurality of mounting holes are provided on the support beam 101, and mounting holes are also provided on the bottom plate of the positioning plate 2. The mounting holes of the positioning plate 2 and the support beam 101 are connected by bolts to achieve a detachable connection, which can be adjusted according to the required length of the clamped workpiece.

[0048] The positioning mechanism includes a clamp body 4, a base frame 3 and a center seat 8 connected to the center of the base frame 3. The center seat 8 is connected to the groove on the inner wall of the base frame 3 by bolts. The center seat 8 is a reference base for the two clamp bodies 4. The two clamp bodies 4 move relatively on both sides of the center seat 8. The workpiece is clamped between the two clamp bodies 4. The center of the center seat 8 is collinear with the transverse center line of the frame 1.

[0049] A plurality of connection holes are provided along the long sides of both sides of the frame 1, and a connection hole is also provided at the lower end of the base frame 3. The base frame 3 is connected to the corresponding connection holes on the frame 1 by bolts to achieve position fixation and disassembly.

[0050] A friction pad 5 is provided on the clamping plate 41 at the side end of the clamping body 4. The friction pad 5 is provided with staggered patterns to increase the friction between the workpiece and the clamping body 4 and prevent the workpiece from slipping out. In order to prevent the deformation of the clamping plate 41 and increase its supporting strength, a supporting portion 42, i.e., a reinforcing rib, is provided on the rear side of the clamping plate 41.

[0051] In order to prevent the height of the ribs of the positioning plate 2 from hindering the clamping of the workpiece, the height of the ribs is lower than the height of the base frame 3, so that when the workpiece is placed flat on the base frame 3, the positions of the ribs and the ends of the workpiece are staggered and no obstruction occurs.

[0052] The positioning mechanism includes screws 7 that rotate on both sides of the base frame 3 respectively, and nut seats 6 are sleeved in the connecting parts 43 at the lower ends of the two clamp bodies 4. The two nut seats 6 are respectively connected to the corresponding screws 7 with threads. The threads of the two screws are opposite, so that the two clamp bodies 4 can move inward or outward at the same time. The adjacent ends of the two screws are collected in the center seat 8 through the screw sleeve 10;

[0053] The screw sleeve 10 is sleeved in the center seat 8, and a groove corresponding to the inner cavity protrusion of the center seat 8 is arranged around the outside of the screw sleeve 10. The inner cavities of the screw sleeve 10 and the center seat 8 are both "H"-shaped. An oil inlet hole 81 connected to the inner cavity is provided at the upper end of the center seat 8. Lubricating oil can be added from the oil inlet hole 81 to make the screw sleeve 10 rotate smoothly in the center seat 8. The ends of the two screws 7 are respectively connected to the left and right ends of the inner cavity of the screw sleeve 10 through locating pins, so that the two screws 7 can rotate at the same time. The other ends of the two screws 7 are connected to the two ends of the base frame 3 through bearings. In order to facilitate the driving of the screws 7 to rotate, a rotating wheel or handle is provided at the outermost end of the two screws 7 to facilitate the operation and rotation.

[0054] Sliding grooves 31 are provided on both side walls of the base frame 3, and both ends of the clamp body 4 extend downward to form platforms, which are engaged with both sides of the base frame 3. Slide plates 9 are connected under the platforms formed by the extension of the clamp body 4, and the slide plates 9 are engaged with the upper walls in the sliding grooves 31, so that the clamp body 4 can slide along the sliding grooves 31.

[0055] The working process of this example:

[0056] First, rivet the part of the workpiece to be welded, that is, after inserting the two connecting plates on one side of the panel, rivet the intersection;

[0057] The positioning mechanism is adjusted according to the length of the workpiece so that it can be installed at a suitable position. The panel portion of the workpiece is fixed in sections, and the base frame 3 is connected to the frame 1 by bolts to fix the position of the positioning mechanism.

[0058] Place the panel of the workpiece flat on the base frame 3 in the positioning mechanism, and abut the end of the panel against the inner wall of the positioning plate 2. The two connecting plates inserted on the panel are respectively located on both sides of the positioning plate 2. Turn the wheel or handle at the outer end of the screw 7, and the two screws rotate at the same time, driving the two clamping bodies 4 to move inward at the same time until the friction pad 5 abuts against the two sides of the panel in the workpiece, clamping the workpiece in the center.

[0059] The frame 1 is driven by a rotating arm, and the rotating angle of the frame 1 is linked with an external welding robot to weld the welding points.

[0060] The above describes one or more embodiments of the utility model in detail, but the above contents are only preferred embodiments of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model shall still fall within the scope of the patent coverage of the utility model.

Claims

1. A special tooling for a rotating frame welding robot, characterized in that: It comprises a frame (1) and a positioning mechanism which is detachable from the frame (1); The frame (1) is connected to an external driving device via support seats (102) on both sides, so that the frame (1) can rotate axially; The positioning mechanism comprises a clamping body (4), a base frame (3) and a center seat (8) connected to the center of the base frame (3); the two clamping bodies (4) move relatively on both sides of the center seat (8); the workpiece is clamped between the two clamping bodies (4); and the center seat (8) is arranged colinearly with the transverse center line of the frame (1).

2. The special tooling for a rotating frame welding robot according to claim 1, characterized in that: A support beam (101) is transversely connected inside the frame (1), and a positioning plate (2) is detachably connected to the support beam (101) for supporting the end of a workpiece.

3. The special tooling for a rotating frame welding robot according to claim 1, characterized in that: The positioning mechanism comprises two lead screws (7) which rotate respectively on both sides of the base frame (3), and the connecting parts (43) at the lower ends of the two clamp bodies (4) are respectively threadedly connected to the corresponding lead screws (7).

4. The special tooling for a rotating frame welding robot according to claim 3, characterized in that: The threads of the two screws are opposite to each other, and the adjacent ends of the two screws are gathered in the center seat (8) through screw sockets (10).

5. The special tooling for a rotating frame welding robot according to claim 4, characterized in that: The screw sleeve (10) is sleeved in the center seat (8), and a groove corresponding to the protrusion of the inner cavity of the center seat (8) is arranged around the outside of the screw sleeve (10), and the ends of the two screws are respectively connected to the two ends of the inner cavity of the screw sleeve (10) through positioning pins.

6. The special tooling for a rotating frame welding robot according to claim 3, characterized in that: Sliding grooves (31) are provided on both side walls of the base frame (3), both ends of the clamp body (4) extend downward and engage with both sides of the base frame (3), and slide plates (9) are connected to the lower parts of both ends of the clamp body (4), and the slide plates (9) engage with the upper walls of the sliding grooves (31), so that the clamp body (4) slides along the sliding grooves (31).

7. The special tooling for a rotating frame welding robot according to claim 3, characterized in that: An oil inlet hole (81) communicating with the inner cavity is provided at the upper end of the center seat (8).

8. The special tooling for a rotating frame welding robot according to claim 3, characterized in that: A friction pad (5) is provided on the clamping plate (41) at the side end of the clamp body (4).

9. The special tooling for a rotating frame welding robot according to claim 1, characterized in that: Conical holes matching with the clamping arms in the external drive device are provided on both sides of the support seat (102).

10. The special tooling for a rotating frame welding robot according to claim 1, characterized in that: At least two positioning mechanisms are provided to fix the workpiece in sections.

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