CN115958358A

CN115958358A - Welding positioning device

Info

Publication number: CN115958358A
Application number: CN202211697419.8A
Authority: CN
Inventors: 崔宇琳; 任将; ***; 易伟平; 柳志诚
Original assignee: Hunan Zoomlion Intelligent Aerial Work Machinery Co Ltd
Current assignee: Hunan Zoomlion Intelligent Aerial Work Machinery Co Ltd
Priority date: 2022-12-28
Filing date: 2022-12-28
Publication date: 2023-04-14

Abstract

The invention relates to a positioning device, and discloses a welding positioning device which comprises a first clamping positioning device, a second clamping positioning device, a third clamping positioning device and a limiting device, wherein the first clamping positioning device and the second clamping positioning device are oppositely arranged along a first direction, the first clamping positioning device comprises a first positioning piece which can be attached to and positioned with the outer contour of a shaft sleeve at one end of a scissor arm workpiece, the second clamping positioning device comprises a second positioning piece which can be attached to and positioned with the outer contour of a shaft sleeve at the other end of the scissor arm workpiece so as to position the scissor arm workpiece along the first direction, the third clamping positioning device and the limiting device are oppositely arranged along a second direction so as to position the scissor arm workpiece along the second direction, and the first direction is vertical to the second direction. The welding positioning device can enable the welding robot to obtain a better welding posture and has higher welding accessibility.

Description

Welding positioning device

Technical Field

The invention relates to a positioning device, in particular to a welding positioning device.

Background

In the field of high-altitude operation machinery, the welding accessibility and the welding posture of a scissor arm workpiece are key points for ensuring the forming quality of a welding seam in the welding process, and are also a big difficulty in the industry.

Specifically, the existing welding positioning tool adopts 6 positioning pin shafts to clamp and position the scissor arm workpiece, and due to the existence of welding seams around the shaft sleeve, the welding accessibility is affected by the positioning shafts, and the welding space of the robot is limited; resulting in poor weld attainment and weld attitude.

Therefore, there is a need to design a new welding positioning device to overcome or alleviate the above technical problems.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a welding positioning device, which can enable a welding robot to obtain a better welding posture and has higher welding accessibility.

In order to solve the technical problem, the invention provides a welding positioning device which comprises a first clamping positioning device, a second clamping positioning device, a third clamping positioning device and a limiting device, wherein the first clamping positioning device and the second clamping positioning device are oppositely arranged along a first direction, the first clamping positioning device comprises a first positioning piece which can be attached to and positioned with the outer contour of a shaft sleeve at one end of a scissor arm workpiece, the second clamping positioning device comprises a second positioning piece which can be attached to and positioned with the outer contour of a shaft sleeve at the other end of the scissor arm workpiece so as to position the scissor arm workpiece along the first direction, the third clamping positioning device and the limiting device are oppositely arranged along a second direction so as to position the scissor arm workpiece along the second direction, and the first direction is perpendicular to the second direction.

In some embodiments, the first clamping and positioning device comprises a first base and a first driving device for driving the first positioning member to move, and the first driving device is mounted on the first base.

In some embodiments, a top portion of the first base extends outward to form a first workpiece positioning base block.

In some embodiments, the second clamping and positioning device includes a second base and a second driving device for driving the second positioning element to move, and the second driving device is installed on the second base.

In some embodiments, the second clamping and positioning device further includes a self-locking device, the second positioning element is sleeved at the driving end of the second driving device through a connecting sleeve, positioning holes for positioning and locking are arranged on the connecting sleeve and the driving end of the second driving device, and the self-locking device is arranged such that the locking end thereof can be inserted into the positioning holes on the connecting sleeve and the driving end of the second driving device to lock the second positioning element.

In some embodiments, a top portion of the second base extends outward to form a second workpiece positioning pedestal.

In some embodiments, the third clamp positioning device comprises a third base and a clamping device mounted on the third base.

In some embodiments, the clamping device is a pneumatic cylinder.

In some embodiments, the first positioning element and the second positioning element are arc-shaped pressing plates which can be attached to the outer contour of the shaft sleeve of the scissor arm workpiece.

In some embodiments, the fixture further comprises a fixture frame, and the first clamping and positioning device, the second clamping and positioning device, the third clamping and positioning device and the limiting device are all mounted on the fixture frame.

Through the technical scheme, the invention has the following beneficial effects:

in two mutually perpendicular's direction, set up the first tight positioner of clamp and the second tight positioner of clamp of mutual disposition and the tight positioner of third clamp and stop device of mutual disposition respectively, to cutting fork arm work piece four corners location, can dodge axle sleeve position department welding seam, promoted the robot welding and can reach the rate, optimized welding robot's welding gesture.

Additional features and advantages of the invention will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic diagram of a weld positioning apparatus in an embodiment of the present invention;

FIG. 2 is a schematic view of a first clamp positioning device in accordance with an embodiment of the present invention;

FIG. 3 is a schematic view of a first clamp positioning device in an embodiment of the present invention;

FIG. 4 is a schematic view of a second clamp positioning device in use in accordance with an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a second clamping and positioning device in an embodiment of the invention.

Description of the reference numerals

1 first clamping and positioning device 11 first positioning element

12 first base 13 first driving device

14 second clamping and positioning device of first workpiece positioning base block 2

21 second positioning element 22 second base

23 second drive means 24 self-locking means

25 connecting sleeve 26 second workpiece positioning base block

3 third clamping and positioning device 4 limiting device

5 tooling frame

Detailed Description

The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following detailed description of the embodiments and the accompanying drawings are included to illustrate the principles of the invention, but are not intended to limit the scope of the invention, which may be embodied in many different forms and are not limited to the specific embodiments disclosed herein, but include all technical solutions falling within the scope of the claims.

These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. It should be noted that: the relative arrangement of parts and steps, the composition of materials, numerical expressions and numerical values set forth in these embodiments are to be construed as merely illustrative, and not as limitative, unless specifically stated otherwise.

It is to be noted that, in the description of the present invention, unless otherwise specified, "a plurality" means greater than or equal to two; the terms "upper," "lower," "left," "right," "inner," "outer," and the like, as used herein, refer to orientations or positional relationships and are used merely to facilitate description of the invention and to simplify the description, but do not indicate or imply that the device or element so referred to must be oriented, constructed, and operated in a particular orientation and therefore should not be construed as limiting the invention. When the absolute position of the object being described changes, then the relative positional relationship may also change accordingly.

Moreover, the use of "first," "second," and similar language throughout this specification does not denote any order, quantity, or importance, but rather the terms first, second, and the like are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element preceding the word covers the element listed after the word, and does not exclude the possibility that other elements are also covered.

It should also be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood as appropriate to those of ordinary skill in the art. When a particular device is described as being between a first device and a second device, intervening devices may or may not be present between the particular device and the first device or the second device.

All terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise specifically defined. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.

As shown in fig. 1 to 5, the invention provides a welding positioning device, which comprises a first clamping positioning device 1, a second clamping positioning device 2, a third clamping positioning device 3 and a limiting device 4, wherein the first clamping positioning device 1 and the second clamping positioning device 2 are oppositely arranged along a first direction, the first clamping positioning device 1 comprises a first positioning piece 11, the first positioning piece 11 can be attached to and positioned on an outer contour of a shaft sleeve at one end of a scissor arm workpiece, the second clamping positioning device 2 comprises a second positioning piece 21, the second positioning piece 21 can be attached to and positioned on an outer contour of a shaft sleeve at the other end of the scissor arm workpiece, so that the first positioning piece 11 and the second positioning piece can position the scissor arm workpiece along the first direction, and the third clamping positioning device 3 and the limiting device 4 are oppositely arranged along a second direction, so that the third clamping positioning device and the limiting device can position the scissor arm workpiece along the second direction, and the first direction is perpendicular to the second direction.

In the technical scheme, the scissors of the scissors arm workpiece are arranged in parallel by the two rectangular pipes, and the shaft sleeves are respectively arranged at the two ends of the two rectangular pipes so as to realize the hinging between different scissors. Because the end face positions of the two ends of the rectangular tube are not shielded by plates, the first positioning piece 11 can directly extend into the end part of the rectangular tube to be attached and positioned with the outer contour of the shaft sleeve at one end of the scissor arm workpiece, and the second positioning piece 21 can directly extend into the end part of the rectangular tube to be attached and positioned with the outer contour of the shaft sleeve at the other end of the scissor arm workpiece, so that the welding positions of the shaft sleeve and the rectangular tube on the side face of the rectangular tube are effectively avoided, a welding robot can conveniently adopt a better welding posture to weld, a better robot welding reaching rate is achieved, and the welding reaching rate refers to the rate of the welding positions of the robot in the welding process. In addition, in the other direction, the third clamping and positioning device 3 and the limiting device 4 are adopted to position the scissor fork of the scissor arm workpiece, so that the situation that the scissor fork of the scissor arm workpiece moves to influence the welding quality in the welding process is prevented.

The first direction and the second direction are two relatively vertical directions, the first direction generally refers to the length direction of the rectangular tube of the scissors arm workpiece, and the second direction generally refers to the width direction of the rectangular tube of the scissors arm workpiece. It should be noted that the welding robot is an industrial robot for welding (including cutting and spraying), and the industrial robot is a multipurpose, reprogrammable, automatically controlled manipulator having three or more programmable axes for use in the field of industrial automation, and the welding robot is a welding tongs or a welding (cutting) gun attached to an end-axis flange of the industrial robot to enable welding, cutting or thermal spraying. The welding robot belongs to a relatively conventional technology, and on the basis that the technical scheme of the invention is known by the technical personnel in the field, the model specification of the welding robot can be selected, so that the details are not repeated.

In some embodiments, the first clamping and positioning device 1 includes a first base 12 and a first driving device 13, the first driving device 13 is mounted on the first base 12, and the first driving device 13 is used for driving the first positioning member 11 to move. The first driving device 13 may be a cylinder, a hydraulic cylinder, a servo motor, or other driving devices.

Further, as shown in fig. 3, the first positioning element 11 may be an arc-shaped pressing plate, an end of the arc-shaped pressing plate is formed into an inward-concave arc-shaped curved surface, and the arc-shaped curved surface can be attached to an outer contour of a shaft sleeve of a scissor arm workpiece, so that a scissor of the scissor arm workpiece can be better fixed.

In some embodiments, the second clamping and positioning device 2 includes a second base 22 and a second driving device 23, the second driving device 23 is mounted on the second base 22, and the second driving device 23 is used for driving the second positioning member 21 to move. The second driving device 23 may be a cylinder, a hydraulic cylinder, a servo motor, or other driving devices.

Further, as shown in fig. 5, the second positioning element 21 may be an arc-shaped pressing plate, an end of the arc-shaped pressing plate is formed into an inward-concave arc-shaped curved surface, and the arc-shaped curved surface can be attached to an outer contour of the shaft sleeve of the scissors arm workpiece, so that the scissors of the scissors arm workpiece can be better fixed.

In some embodiments, the top of the first base 12 extends outward to form a first workpiece positioning base block 14, and the top of the second base 22 extends outward to form a second workpiece positioning base block 26, and during actual use, the extending directions of the first workpiece positioning base block 14 and the second workpiece positioning base block 26 are opposite to each other, so as to support the end of the scissor arm workpiece.

In order to better realize the fixation of the scissors arm workpiece, the second clamping and positioning device 2 is further provided with a self-locking device 24, the second positioning part 21 is sleeved at the driving end of the second driving device 23 through a connecting sleeve 25, the connecting sleeve 25 and the driving end of the second driving device 23 are respectively provided with a positioning hole, and the locking end of the self-locking device 24 can be inserted into the positioning holes at the driving ends of the connecting sleeve 25 and the second driving device 23, so that the second positioning part 21 is locked, namely the positioning and locking in the length direction of the scissors arm workpiece are realized. Further, a plurality of positioning holes can be arranged at the driving end of the second driving device 23 to meet the requirements of the scissors arm workpieces with different specifications. The second driving device 23 is preferably an air cylinder, and the self-locking device 24 is preferably an air cylinder.

In some embodiments, the third clamping and positioning device 3 is similar to the first clamping and positioning device 1 in structure, and includes a third base and a clamping device, the clamping device is mounted on the third base, and the clamping device may be a driving device such as an air cylinder, a hydraulic oil cylinder, a servo motor, etc.

In some embodiments, the limiting device 4 is a fixed limiting block, the limiting device 4 has an abutting surface abutting against the side surface of the scissors fork of the scissors arm workpiece, and the abutting surface of the limiting device 4 is substantially identical to the contour of the side surface of the scissors fork of the scissors arm workpiece.

In some embodiments, the first clamping and positioning device 1, the second clamping and positioning device 2, the third clamping and positioning device 3 and the limiting device 4 are all mounted on the tool frame 5. Compared with the prior art, the tooling frame 5 does not need to machine frame body hole positions, and the machining difficulty of the whole tooling is reduced.

In order to better understand the technical idea of the present invention, the following description is given with reference to relatively full technical features.

As shown in fig. 1 to 5, a welding positioning device according to a preferred embodiment of the present invention includes a first clamping and positioning device 1, a second clamping and positioning device 2, a third clamping and positioning device 3, and a position-limiting device 4, where the first clamping and positioning device 1 and the second clamping and positioning device 2 are arranged oppositely along a first direction, the third clamping and positioning device 3 and the position-limiting device 4 are arranged oppositely along a second direction, and the first direction and the second direction are perpendicular to each other. The first clamping and positioning device 1 comprises a first positioning member 11, a first base 12 and a first driving device 13, the first positioning member 11 may be an arc-shaped pressing plate, the first driving device 13 is installed on the first base 12, the first driving device 13 is used for driving the first positioning member 11 to move, and the first driving device 13 may be an air cylinder. The second clamping and positioning device 2 comprises a second positioning piece 21, a second base 22, a second driving device 23 and a self-locking device 24, the second positioning piece 21 can be an arc-shaped pressing plate, the second driving device 23 is installed on the second base 22, the second driving device 23 is used for driving the second positioning piece 21 to move, the second driving device 23 can be an air cylinder, the second positioning piece 21 is sleeved at the driving end of the second driving device 23 through a connecting sleeve 25, positioning holes are respectively arranged on the connecting sleeve 25 and the driving end of the second driving device 23, and the locking end of the self-locking device 24 can be inserted into the positioning holes on the connecting sleeve 25 and the driving end of the second driving device 23, so that the second positioning piece 21 can be locked. The top of the first base 12 extends outwards to form a first workpiece positioning base block 14, the top of the second base 22 extends outwards to form a second workpiece positioning base block 26, and in the actual use process, the extending directions of the first workpiece positioning base block 14 and the second workpiece positioning base block 26 are opposite, so that the end of a scissor arm workpiece can be supported. The third clamping and positioning device 3 comprises a third base and a clamping device, the clamping device is installed on the third base, the clamping device can be an air cylinder, the limiting device 4 is a fixed limiting block, and the first clamping and positioning device 1, the second clamping and positioning device 2, the third clamping and positioning device 3 and the limiting device 4 are all installed on the tool frame 5.

Compared with the mode that 6 positioning pin shafts are adopted to position the shaft sleeve of the workpiece of the scissor arm in the prior art, the mode for positioning the workpiece of the scissor arm is that the four corners of the workpiece are clamped by a device with an arc-shaped pressing plate in the length direction and a clamping device in the width direction, the clamping and positioning device with the arc-shaped pressing plate can be effectively attached to the shaft sleeve at the four corners of the workpiece, stable and reliable clamping and positioning are realized, a welding seam at the position of the shaft sleeve of the workpiece needing welding by a welding robot is avoided, the welding reaching rate of the robot is improved, and the workload of subsequent manual repair welding is reduced. Interference-free tool parts are arranged at the periphery of the welding seam of the workpiece with the scissor arm, so that the welding posture of the welding robot is optimized. The occupied space is small, and the utilization rate of a factory building is improved. The tooling frame 5 does not need to machine frame body hole positions, the overall machining difficulty of the tooling is reduced, the structure is simplified, and the tooling manufacturing cost is reduced. Set up self-lock device 24, both satisfied the ascending spacing clamp of length direction and tightly, guaranteed when making the work piece again and do not have the position of interfering with the frock, promote the efficiency of unloading.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.

It should be noted that the various features described in the foregoing embodiments may be combined in any suitable manner without contradiction. The invention is not described in detail in order to avoid unnecessary repetition.

In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.

Claims

1. The utility model provides a welding positioning device, its characterized in that presss from both sides tight positioner (1), second and presss from both sides tight positioner (2), third and press from both sides tight positioner (3) and stop device (4) including first tight positioner (1) of clamp and press from both sides tight positioner (2) of clamp and follow first direction mutual disposition, first tight positioner (1) of clamp including can with first setting element (11) of the outline laminating location of scissors arm work piece one end axle sleeve, second press from both sides tight positioner (2) including can with second setting element (21) of the outline laminating location of scissors arm work piece other end axle sleeve, with can follow first direction is right scissors arm work piece location, third presss from both sides tight positioner (3) and stop device (4) and follows second direction mutual disposition, with can follow the second direction is right scissors arm work piece location, first direction with the second direction is perpendicular.

2. Welding positioning device according to claim 1, characterized in that the first clamping positioning device (1) comprises a first base (12) and a first driving device (13) for driving the first positioning member (11) in movement, the first driving device (13) being mounted on the first base (12).

3. The weld positioning device according to claim 2, wherein a top portion of the first base (12) is formed with a first work positioning block (14) extending outwardly therefrom.

4. Welding positioning device according to any of claims 1-3, characterized in that the second clamping positioning device (2) comprises a second base (22) and a second driving device (23) for driving the second positioning element (21) to move, the second driving device (23) being mounted on the second base (22).

5. The welding positioning device according to claim 4, characterized in that the second clamping positioning device (2) further comprises a self-locking device (24), the second positioning member (21) is sleeved at the driving end of the second driving device (23) through a connecting sleeve (25), positioning holes for positioning and locking are arranged at the driving ends of the connecting sleeve (25) and the second driving device (23), and the self-locking device (24) is arranged such that the locking end thereof can be inserted into the positioning holes at the driving ends of the connecting sleeve (25) and the second driving device (23) to lock the second positioning member (21).

6. The weld positioning device according to claim 4, wherein a second workpiece positioning block (26) is formed extending outwardly from a top of the second base (22).

7. The welding positioning device according to any of the claims 1 to 3, characterized in that the third clamping positioning device (3) comprises a third seat and a clamping device mounted on the third seat.

8. The weld positioning device of claim 7, wherein the clamping device is a cylinder.

9. The welding positioning device according to any one of claims 1 to 3, characterized in that the first positioning piece (11) and the second positioning piece (21) are arc-shaped pressure plates which can be fitted with the outer contour of the shaft sleeve of the scissor arm workpiece.

10. The welding positioning device according to any one of claims 1 to 3, further comprising a tooling frame (5), wherein the first clamping and positioning device (1), the second clamping and positioning device (2), the third clamping and positioning device (3) and the limiting device (4) are all mounted on the tooling frame (5).