CN115178947A

CN115178947A - Overturning positioning device and welding positioning mechanism

Info

Publication number: CN115178947A
Application number: CN202210823597.4A
Authority: CN
Inventors: 黄大练; 何福林; 韦延伙; 李成整
Original assignee: Liuzhou Liuxin Auto Stamping Co ltd
Current assignee: Liuzhou Liuxin Auto Stamping Co ltd
Priority date: 2022-07-13
Filing date: 2022-07-13
Publication date: 2022-10-14

Abstract

The invention discloses a turnover positioning device and a welding positioning mechanism, wherein the turnover positioning device comprises a mounting seat and a turnover assembly, the mounting seat is arranged on a mounting platform and is spaced from a part to be welded on the mounting platform, the turnover assembly comprises a support and a pickup structure, the support is fixed on the mounting seat, one end of the pickup structure is rotatably mounted on the support along a transversely extending axis, and the other end of the pickup structure is detachably connected with a profiling mold through an adsorption structure. The explorator does not need to be disassembled to carry out assembling operation in the same vehicle type, and the explorators with different specifications only need to be replaced in the welding of different vehicle types, so that the automation degree is high in the machining process, the labor intensity of workers is reduced, and the production efficiency and the positioning precision are improved.

Description

Overturning positioning device and welding positioning mechanism

Technical Field

The invention relates to the technical field of mechanical equipment, in particular to a turnover positioning device and a welding positioning mechanism.

Background

The welding and assembling of the body-in-white of the automobile is originally labor-intensive operation, but the labor cost is higher and higher, the automatic development is rapidly carried out at present along with the higher and higher personnel cost, the automatic input cost is considered, the welding and assembling automation is more developed by adopting a process scheme of welding operation of a manual part mounting robot, the types of floor assemblies in commercial vehicles are more, the main body structures are basically consistent, and the main differences are in the length, the number of small parts and the welding positions. The rear section of the middle floor is welded with a plurality of small screw mother boards, the models of all vehicles are different, the common use of the clamp is influenced most,

the scheme of the existing clamp is that a master template of a middle floor rear section small screw is positioned to realize a shared main body clamp structure by adopting a structure of one master template of each vehicle type. However, the explorator needs to be dismounted when each middle floor assembly is welded, the middle floor assembly welded on the clamp needs to be dismounted, the main body part of the next welded middle floor needs to be mounted, and the small spiral mother board and the explorator need to be mounted, so that the continuous welding operation is realized, the mounting time is long, the manual labor is light, and the switching of vehicle types is not facilitated.

Disclosure of Invention

The invention mainly aims to provide a turnover positioning device and a welding positioning mechanism, aims to realize the sharing of multiple vehicle types, and solves the problems of long welding and assembling time and slight manual labor of the conventional nut plate.

In order to achieve the above object, the present invention provides a turning positioning device, including:

the mounting seat is arranged on the mounting platform and is spaced from the part to be welded on the mounting platform; and the number of the first and second groups,

the overturning assembly comprises a support and a picking structure, the support is fixed to the mounting seat, one end of the picking structure is rotatably mounted to the support along a transversely extending axis, and the other end of the picking structure is detachably connected with the profiling through an adsorption structure.

Optionally, the pick-up structure comprises:

the mounting frame comprises a supporting arm extending along the transverse direction and two extension arms arranged at two ends of the supporting arm, and a plurality of electromagnets are arranged on each of the two extension arms at intervals along the length direction of the extension arm; and the number of the first and second groups,

one end of the connecting rod is fixedly connected with the supporting arm, and the other end of the connecting rod is hinged to the mounting seat;

the adsorption structure includes the plurality of electromagnets.

Optionally, each extension arm is further provided with a positioning pin, and the positioning pin is located between two adjacent electromagnets and is used for being matched with a positioning hole of the explorator.

Optionally, the flipping assembly further comprises a resisting structure, and the resisting structure comprises:

the first mounting arm is arranged between the two extension arms and is arranged at an interval with the support arm;

the rotating cylinder is arranged on the first mounting arm; and the number of the first and second groups,

and one end of the limiting baffle is fixedly connected with the driving end of the rotary cylinder, so that the other end of the limiting baffle can rotate to resist the local part of the explorator or avoid the explorator.

Optionally, the overturning assembly further comprises an overturning cylinder, the overturning cylinder is arranged in an inclined manner from top to bottom towards a side away from the mounting seat, a cylinder barrel of the overturning cylinder is fixed to the mounting seat, and a cylinder rod of the overturning cylinder is hinged to the connecting rod;

wherein the hinged position of the connecting rod and the mounting seat is positioned between the hinged position of the connecting rod and the cylinder rod of the turnover cylinder and the supporting arm.

Optionally, the turnover positioning device further comprises a limiting structure, the limiting structure comprises two limiting blocks respectively arranged on the connecting rod and the upper end face of the mounting seat, and one of the limiting blocks can be driven to abut against and be tightly matched with the other limiting block in the rotation stroke of the connecting rod.

Optionally, the mount includes:

the two supporting seats are arranged on the mounting platform at intervals along the transverse direction;

the sliding table is longitudinally and slidably mounted on the two supporting seats;

the turnover assembly is arranged on the sliding table and is positioned between the two supporting seats.

Optionally, two ends of each supporting seat along the longitudinal direction are provided with a stop block for limiting the movable stroke of the sliding table.

The invention also provides a welding positioning mechanism, comprising:

the mounting platform is used for positioning and mounting the parts to be welded;

the plurality of clamps are arranged on the mounting platform at intervals along the circumferential direction and are used for positioning the circumferential sides of the parts to be welded together;

the overturning positioning device is arranged on one side of the mounting platform along the longitudinal direction and is spaced from the plurality of clamps; and the number of the first and second groups,

the explorator is detachably mounted on the picking structure of the turnover positioning device, can be in contact with the upper surface of a part to be welded under the driving of the picking structure, and comprises a plurality of positioning frames arranged at intervals along the circumferential direction of the explorator, and the positioning frames are used for installing a plurality of nut plates in a positioning mode through magnetic attraction.

Optionally, the master form comprises:

the mounting frame comprises two first beams which are oppositely arranged and two second beams which are connected with the two ends of the two first beams;

at least one positioning beam is arranged between the two first beams and connected with the two first beams, and an adsorption binding surface is formed at the local part of the positioning beam and is used for being matched with the adsorption structure of the turnover positioning device.

According to the technical scheme, the mounting seat is spaced from the part to be welded, the picking structure initially extends in the vertical direction, in the working process, the explorator is firstly fixed on the picking structure in an adsorption mode through the adsorption structure, then the picking structure is driven to rotate, the explorator is driven to turn over so as to be attached to the upper surface of the part to be welded on the mounting platform, the explorator is used for mounting a plurality of nut plates, the nut plates are positioned on the product to be welded under the action of the turning assembly, after welding is completed through the welding robot, the picking structure can be driven reversely, the explorator is lifted up from the product, then the nut plates can be mounted again and the part to be welded can be replaced, namely the explorator does not need to be dismounted for assembling operation under the same vehicle type, in the welding of different vehicle types, only the exploratory with different specifications needs to be replaced, in the machining process, the automation degree is high, the manual labor intensity is reduced, and the production efficiency and the positioning accuracy are improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a perspective view of one embodiment (a first state) of a welding positioning mechanism according to the present invention;

FIG. 2 is a perspective view of the welding position mechanism (in another state) of FIG. 1

FIG. 3 is a perspective view of the flipping positioning device of FIG. 1;

FIG. 4 is a schematic perspective view of the pickup structure and the master form of FIG. 1 in cooperation;

FIG. 5 is a perspective view of the flipping positioning device of FIG. 2;

FIG. 6 is a schematic perspective view of one embodiment of the master form of FIG. 1;

fig. 7 is a schematic perspective view of another embodiment of the master form of fig. 1.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				1000	Welding positioning mechanism	223	Locating pin
100	Turnover positioning device	23	Electromagnet
				1	Mounting seat	241	First mounting arm
11	Supporting seat	242	Rotary cylinder
				111	Stop block	243	Limit baffle
12	Sliding table	25	Overturning air cylinder
				21	Support base	261	Limiting block
22	Pick-up structure	200	Mounting platform
				221	Mounting rack	300	Clamp apparatus
2211	Support arm	400	Profiling mould
				2212	Extension arm	401	Positioning frame
222	Connecting rod	402	Adsorption binding face

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that, if directional indication is involved in the embodiment of the present invention, the directional indication is only used for explaining the relative positional relationship, the motion situation, and the like between the components in a certain posture, and if the certain posture is changed, the directional indication is changed accordingly.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

the scheme of the existing clamp is that a master template of a middle floor rear section small screw is positioned to realize a shared main body clamp structure by adopting a structure of one master template of each vehicle type. However, when one middle floor assembly is welded, the explorator needs to be detached, the middle floor assembly welded on the clamp needs to be detached, the main part of the next welded middle floor is installed, and the small spiral mother plate and the explorator are installed, so that the continuous welding operation is realized, the assembling time is long, the manual labor is slight, and the vehicle type switching is not facilitated.

In view of the above, the invention provides an overturning positioning device and a welding positioning mechanism, which aim to realize the sharing of multiple vehicle types and solve the problems of long welding time and large manual labor intensity of the conventional nut plate. Fig. 1 to 7 show an embodiment of a welding positioning mechanism provided in the present invention.

Referring to fig. 1 to 2, a welding positioning mechanism 1000 includes a mounting platform 200, a plurality of clamps 300, an overturning positioning device 100, and a profiling mold 400, where the mounting platform 200 is used for positioning and mounting a part to be welded; a plurality of anchor clamps 300 are located along the circumference interval on the mounting platform 200 for common location treats all sides of welding part, upset positioner 100 locates along fore-and-aft one side on the mounting platform 200, and with a plurality of anchor clamps 300 interval for the correspondence is treated the welding part and is required to carry out nut plate welded position, profiling 400 demountable installation be in on upset positioner 100's the pick-up structure 22, can pick-up structure 22 drive down with treat the upper surface contact of welding part, each profiling 400 includes a plurality of posting 401 along its circumference interval setting, a plurality of posting 401 are used for fixing a position a plurality of nut plates of installation through magnetism suction fit.

Specifically, each positioning frame 401 is provided with an electromagnet 23, so that the nut plate can be directly assembled in an open state, and the explorator 400 does not need to be detached from the turnover positioning device 100, so that the operation is more convenient.

Referring to fig. 3 to 5, the turning positioning apparatus 100 includes a mounting base 1 and a turning assembly, the mounting base 1 is configured to be disposed on a mounting platform 200 and spaced apart from a part to be welded on the mounting platform 200, the turning assembly includes a support 21 and a pickup structure 22, the support 21 is fixed on the mounting base 1, one end of the pickup structure 22 is rotatably mounted to the support 21 along a transversely extending axis, and the other end is detachably connected to a master form 400 through an adsorption structure.

In the technical scheme of the invention, the mounting seat 1 is spaced from a part to be welded, initially, the pickup structure 22 extends in the up-down direction, in the working process, the master form 400 is firstly fixed on the pickup structure 22 through the adsorption structure in an adsorption manner, then the pickup structure 22 is driven to rotate, so that the master form 400 is driven to turn over to achieve the purpose of being attached to the upper surface of the part to be welded on the mounting platform 200, the master form 400 is used for mounting a plurality of nut plates, at the moment, the plurality of nut plates are positioned on the product to be welded under the action of a turning assembly, after welding is completed through a welding robot, the pickup structure 22 can be driven reversely, the master form 400 is lifted from the product, then the nut plates can be remounted and the part to be welded can be replaced, namely, the master form 400 does not need to be dismounted for assembly operation under the same production condition, in welding of different vehicle models, only the master forms 400 of different specifications need to be replaced, in the processing process, the automation degree is high, the labor intensity is reduced, and the production efficiency and the positioning accuracy is improved.

It can be understood that the explorator 400 with different specifications has different sizes, and the number of the corresponding positioning frames 401 is different, in this embodiment, each explorator 400 has a frame-type structure, please refer to fig. 6 to 7, the explorator 400 includes a mounting frame and at least one positioning beam, the mounting frame includes two first beams that are oppositely disposed and two second beams that connect two ends of the two first beams, the positioning Liang Sheyu is disposed between and connects the two first beams, and an adsorption adhesion surface 402 is formed at a part of the positioning beam for matching with the adsorption structure of the inversion positioning apparatus 100. Frame construction has good intensity, and weight is lighter, and in this embodiment, the locating beam interval sets up two, and is located the middle part position of installing frame, the circular shape massive structure of a magnetism material of welding on every locating beam, its terminal surface conduct adsorb binding face 402, the quantity of adsorbing binding face 402 depends on adsorption structure's setting.

In order to adapt to the structure of the explorator 400, please refer to fig. 3 to 4, the picking mechanism 22 includes a mounting bracket 221 and a connecting rod 222, the mounting bracket 221 includes a supporting arm 2211 extending along the transverse direction and two extending arms 2212 arranged at two ends of the supporting arm 2211, a plurality of electromagnets 23 are arranged on each of the two extending arms 2212 at intervals along the length direction thereof, one end of the connecting rod 222 is fixedly connected with the supporting arm 2211, and the other end is hinged to the mounting base 1; the adsorption structure includes the plurality of electromagnets 23. The two extension arms 2212 respectively correspond to the two positioning beams of the explorator 400, the arrangement of the adsorption binding surface 402 on each positioning beam and the arrangement of the electromagnet 23 on each extension arm 2212 keep the same quantity and direction, so that the adsorption fixation is convenient, the stability is good, and the explorator 400 can be prevented from deflecting. In this embodiment, two electromagnets 23 are disposed on each extension arm 2212, and two adsorption binding surfaces 402 are formed on each positioning beam, so that when the electromagnets 23 are powered on, the installation stability of the explorator 400 can be ensured, and when the vehicle model explorator 400 needs to be replaced, the electromagnets 23 are cut off, and the explorator 400 can be detached and a new model explorator 400 can be installed.

It should be noted that, in other embodiments, the suction structure may also be used to suck and fix the master form 400 by a vacuum chuck, which is not described in detail herein.

Further, in this embodiment, the mounting frame 221 is a splicing structure, and is assembled by a plurality of splicing blocks through bolts, and two extension arms 2212 are assembled together along different shapes in the vertical direction and the splicing blocks located on different planes, and the support arm 2211 is connected with the two extension arms 2212 through two L-shaped bending plates arranged oppositely.

In order to improve the positioning stability, in the explorator 400, on each positioning beam, a positioning hole penetrates between two adjacent adsorption joint surfaces 402, correspondingly, each extension arm 2212 is further provided with a positioning pin 223, and the positioning pin 223 is located between two adjacent electromagnets 23 and is used for being inserted and matched with the positioning hole of the explorator 400, and the installation, the positioning and the rotation stopping are performed in a pin hole matching manner.

Moreover, the turning assembly further includes a blocking structure, the blocking structure includes a first mounting arm 241, a rotary cylinder 242 and a limit baffle 243, the first mounting arm 241 is disposed between the two extension arms 2212 and is spaced from the support arm 2211, the rotary cylinder 242 is disposed on the first mounting arm 241, one end of the limit baffle 243 is fixedly connected with a driving end of the rotary cylinder 242, so that the other end can rotate to block a part of the explorator 400 or avoid the explorator 400. Referring to fig. 4, initially, the limit baffle 243 extends in the transverse direction to perform the suction installation of the explorator 400, and after the installation, the rotary cylinder 242 is driven to rotate the limit baffle 243 by 90 ° to abut against one of the first beams of the explorator 400, so that the explorator 400 is integrally pressed on the installation frame 221, the mechanical limit is realized, and the explorator 400 can be kept to be tightly attached to the electromagnet 23, so that the electromagnet 23 provides a sufficient suction force.

Further, the specific form of the picking structure 22 that is driven to turn over is not limited in the present application, and the picking structure may be driven to rotate by the cooperation of a motor and a gear, in this embodiment, the turning assembly further includes a turning cylinder 25, the turning cylinder 25 is disposed from top to bottom in an inclined manner toward a side away from the mounting base 1, a cylinder barrel of the turning cylinder 25 is fixed to the mounting base 1, and a cylinder rod of the turning cylinder 25 is hinged to the connecting rod 222; wherein the hinge position of the connecting rod 222 to the mount 1 is between the hinge position of the connecting rod 222 to the cylinder rod of the turning cylinder 25 and the support arm 2211. Initially, referring to fig. 3, the flipping cylinder 25 is disposed in an inclined manner, and the cylinder rod is retracted, and at this time, the picking structure 22 is pulled to extend in the up-down direction, and when the state is changed, referring to fig. 5, the cylinder rod extends, the cylinder angle of the flipping cylinder 25 is changed to extend in the up-down direction, and the picking structure 22 is rotated by 90 ° under the hinge-joint cooperation of each portion.

It will be appreciated that the pick-up structure 22 may also be rotated through an angle of less than 90 deg. when rotated to a given position, taking into account the different profile of the parts to be welded, when the fence 400 is in contact with the inclined surface of the parts to be welded.

In order to prevent the mounting frame 221 from shaking longitudinally relative to the support 21 due to the local clearance fit after being flipped, in this embodiment, the flipping positioning device 100 further includes a limiting structure, the limiting structure includes two limiting blocks 261 respectively disposed on the connecting rod 222 and the upper end surface of the mounting base 1, and during the rotation stroke of the connecting rod 222, one of the limiting blocks 261 can be driven to abut against the other limiting block 261. Specifically, the two limit blocks 261 are abutted and matched through end surfaces, and limit the rotation stroke of the mounting frame 221. In order to provide better cooperation effect, it is preferred that the terminal surface that two stopper 261 offsets tightly is the arc setting, promptly indent of a evagination of terminal surface that two stopper 261 laminated each other, in other embodiments, limit structure can be that card is protruding and draw-in groove complex mode is spacing.

It should be noted that, in this embodiment, the two stop blocks 261 are both fixed by bolts, and can be replaced after being worn.

In view of the fact that the positions of parts to be welded with different specifications are changed after being positioned on the mounting platform 200, in an embodiment, the mounting base 1 includes two supporting bases 11 and a sliding table 12, the two supporting bases 11 are arranged on the mounting platform 200 at intervals in the transverse direction, the sliding table 12 is arranged on the two supporting bases 11 in a sliding manner in the longitudinal direction, and the turnover assembly is arranged on the sliding table 12 and located between the two supporting bases 11. Therefore, the position of the turnover assembly relative to the mounting platform 200 can be adjusted, so that the position of the sliding table 12 can be adjusted according to different vehicle types, and the universality is stronger.

Further, two ends of each supporting seat 11 along the longitudinal direction are provided with a stop block 111 for limiting the moving stroke of the sliding table 12. Each of the stop blocks 111 is a multi-section bent plate, and is fixed by bolts, so that the sliding table 12 is longitudinally limited.

The fixture 300 provided on the mounting platform 200 of the present invention may position the parts to be welded through the end surface and the hole, and may be a manual fixture, a pneumatic fixture or an electric fixture, which is not limited herein.

In the technical scheme of the invention, the explorator 400 is clamped by the electromagnet 23 and the rotary cylinder 242, so that the direct assembly after automatic turnover is realized, the interface of the explorator 400 only needs to be replaced when the vehicle type is switched, and the sliding table 12 with the length switched by various vehicle types is arranged, so that the sharing of multiple vehicle types is realized, the manual operation working time is reduced, and the manual operation efficiency is improved. The explorator 400 for positioning the plurality of nut plates can be locked on the picking structure 22, so that the plurality of small nut plates can be automatically positioned, the explorator 400 only needs to be replaced when the vehicle type is switched, the explorator 400 does not need to be dismounted when the same vehicle type is produced, the explorator 400 for positioning the plurality of nut plates can leave the welded middle floor assembly under the driving of overturning pneumatics, the lower line of the floor assembly can be conveyed by a robot, and the explorator 400 does not need to be dismounted manually.

In addition, in order to facilitate the picking operation of the operator, two pairs of two handles are further provided on the explorator 400 for the operator to hold.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A kind of turnover locating device, is used for bringing the explorator of different specifications into contact with welding the part to be welded selectively, characterized by that, the turnover locating device includes:

the overturning assembly comprises a support and a picking structure, the support is fixed to the mounting seat, one end of the picking structure is rotatably mounted to the support along a transversely extending axis, and the other end of the picking structure is detachably connected with the profiling mold through an adsorption structure.

2. The tumble positioning device according to claim 1, characterized in that said pick-up structure comprises:

the mounting rack comprises a supporting arm extending along the transverse direction and two extending arms arranged at two ends of the supporting arm, and a plurality of electromagnets are arranged on each of the two extending arms at intervals along the length direction of the two extending arms; and the number of the first and second groups,

the adsorption structure includes the plurality of electromagnets.

3. The roll-over positioning device of claim 2, wherein each of the extension arms further comprises a positioning pin, the positioning pin is located between two adjacent electromagnets and is used for being matched with the positioning hole of the explorator.

4. The roll-over positioning device of claim 2, wherein the roll-over assembly further comprises a resisting structure, the resisting structure comprising:

5. The overturning positioning device according to claim 2, wherein the overturning assembly further comprises an overturning cylinder, the overturning cylinder is arranged in a manner of inclining from top to bottom towards a side away from the mounting seat, a cylinder barrel of the overturning cylinder is fixed on the mounting seat, and a cylinder rod of the overturning cylinder is hinged with the connecting rod;

6. The turnover positioning device according to claim 2 or 5, further comprising a limiting structure, wherein the limiting structure comprises two limiting blocks respectively arranged on the connecting rod and the upper end surface of the mounting seat, and one of the limiting blocks can be driven to abut against and be matched with the other limiting block in the rotation stroke of the connecting rod.

7. The roll-over positioning apparatus of claim 1, wherein the mounting base comprises:

the sliding table is mounted on the two supporting seats in a longitudinally sliding mode;

8. The roll-over positioning device according to claim 7, wherein the supporting seats are provided with stop blocks at both ends in the longitudinal direction for limiting the moving stroke of the sliding table.

9. A welding positioning mechanism, comprising:

the turnover positioning device as claimed in any one of claims 1 to 8, disposed on one side of the mounting platform in the longitudinal direction, and spaced from the plurality of clamps; and the number of the first and second groups,

10. The weld positioning mechanism of claim 9, wherein the profile comprises: