CN113042952A

CN113042952A - Track regulation and control device for welding automobile parts

Info

Publication number: CN113042952A
Application number: CN202110400216.7A
Authority: CN
Inventors: 王卫卫; 王江兰; 袁涛; 姜晓菲
Original assignee: Yantai Engineering and Technology College
Current assignee: Yantai Engineering and Technology College
Priority date: 2021-04-14
Filing date: 2021-04-14
Publication date: 2021-06-29

Abstract

The invention belongs to the technical field of automobile manufacturing, and discloses a track regulation and control device for welding automobile parts, which comprises a mechanical arm for welding a machine body, and a first stepping motor and a second oil pipe which are fixedly arranged on the mechanical arm, wherein an output shaft of the first stepping motor is connected with a pressure oil mechanism in a transmission manner, an output end of the pressure oil mechanism is fixedly communicated with an oil way selection valve, and the top and the bottom of the oil way selection valve are respectively and fixedly communicated with the second oil pipe and the first oil pipe. According to the invention, the rotating head is pushed by hydraulic oil to rotate along the annular oil duct, so that the rotating plate, the fine adjustment telescopic mechanism, the mounting frame and the welding gun synchronously rotate, the maximum rotation angle reaches one hundred eighty degrees, the full-angle coverage can be carried out on the welding part of the part by matching with the mechanical shaft, the small-angle fine adjustment of the welding gun on the welding part of the part is effectively realized, the size of the fine adjustment rotary mechanism is miniaturized, the volume interference is eliminated, and the performance is stable.

Description

Track regulation and control device for welding automobile parts

Technical Field

The invention belongs to the technical field of automobile manufacturing, and particularly relates to a track regulating and controlling device for welding automobile parts.

Background

The processing of automobile parts is an essential part for forming each unit service of automobile production, and the processes of production, polishing, finish machining, welding assembly and the like of the parts are generally designed, and the processing quality of the parts directly influences the quality of the whole production link, and the importance degree of the processing quality is self-evident.

The existing welding of automobile parts basically adopts robot welding, the high working efficiency of the robot welding greatly improves the productivity, generally, for the welding of larger parts such as a vehicle body frame and the like, the robot welding can ensure higher quality and working efficiency, but for some smaller parts such as studs welded to the vehicle body frame, the robot welding has very frequent desoldering phenomenon, generally, the welding at the position needs manual investigation and then manual re-welding, the main reason of desoldering appears at the position, the welded parts are smaller, when a welding gun controlled by a machine enters a smaller position for welding, the sensitivity is not enough, the existing robots such as five shafts, six shafts and the like on the market lack a device capable of directly regulating and controlling the welding track, so that the fine adjustment precision of small angles and small lengths is not enough, therefore, a welding track regulation and control module suitable for the position needs to be designed, so as to improve the welding precision of the robot.

Disclosure of Invention

The invention aims to provide a track regulating and controlling device for welding automobile parts, which aims to solve the problems in the background technology.

In order to achieve the above purpose, the invention provides the following technical scheme: a track regulation and control device for welding automobile parts comprises a mechanical arm of a welding machine body, a first stepping motor and a second oil pipe, wherein the first stepping motor and the second oil pipe are fixedly installed on the mechanical arm, an output shaft of the first stepping motor is connected with an oil pressing mechanism in a transmission mode, an output end of the oil pressing mechanism is fixedly communicated with an oil way selection valve, the top and the bottom of the oil way selection valve are respectively fixedly communicated with the second oil pipe and the first oil pipe, an output shaft of the second stepping motor is fixedly connected with the oil way selection valve, the other ends of the first oil pipe and the second oil pipe are respectively communicated with a fine adjustment telescopic mechanism and a fine adjustment rotating mechanism, and an installation frame is fixedly installed at the bottom of the;

the fine setting rotary mechanism is including fixed oily frame, rotor plate, transfer line and the head that rotates of receiving, the both ends of transfer line respectively with rotor plate and fine setting telescopic machanism fixed connection, rotate head fixed mounting in the rotor plate, when fixed oily frame, rotor plate, the cooperation of head that receives utilizes oil to push away to drive the transfer line and rotate, fine setting telescopic machanism takes place synchronous axial and rotates.

Preferably, the oil pressing mechanism comprises an inner rotating rod, a fixed sleeve block and an outer rotating rod, the inner rotating rod is movably sleeved with the outer rotating rod, the outer rotating rod is movably sleeved with the fixed sleeve block, the outer rotating rod moves back and forth through the fixed sleeve block when rotating, a top rod is fixedly mounted at the front end of the outer rotating rod, the top rod is fixedly connected with a piston, the piston is movably sleeved in an inner cavity of the oil cylinder, the oil cylinder is fixedly communicated with an oil way selection valve, the inner rotating rod is in transmission connection with an output shaft of a stepping motor, connectors located at the top and the bottom are respectively fixedly communicated with an oil pipe II and an oil pipe I, and due to the fact that the outer rotating rod rotates, the pushing state and the returning state exist when the top rod pushes the piston to have the oil pushing state and the oil returning state in the oil cylinder.

Preferably, the oil path selection valve comprises two valve bodies, a first oil cavity and a second oil cavity are formed in the two valve bodies after the two valve bodies are combined, the first oil cavity and the second oil cavity have the same specification, the first oil cavity and the second oil cavity are communicated with an inner cavity of the oil cylinder through an external connector of the valve body, connectors are fixedly installed at output ports at the top and the bottom of the valve bodies, a plugging mechanism composed of a first half column block, a second half column block and a plugging block is respectively arranged in the first oil cavity and the second oil cavity, the first half column block and the second half column block are fixedly welded, the plugging block is movably sleeved in an inner cavity formed between the first half column block and the second half column block, the valve bodies are in transmission connection with a second stepping motor, and when the two valve bodies are installed, the two valve bodies can be fixed in a mode of adding an extension edge, a screw and a sealing strip at the edge of the connection position, or a direct welding method can be adopted, here, the fixing is performed by direct welding.

Preferably, the fine adjustment telescopic mechanism comprises a guide cylinder, a damping spring and a guide pillar, wherein the damping spring is movably sleeved on the surface of the guide pillar and serves as an elastic force restoring part of the guide pillar, the guide pillar comprises a piston and a piston rod part which are movably sleeved in an inner cavity of the guide cylinder, an oil injection port of the guide cylinder is communicated with an oil pipe, the outer part of the piston rod of the guide pillar is fixedly connected with the mounting frame, when the oil pipe injects oil into the guide cylinder, hydraulic oil returns to the space above the piston part of the guide pillar, the guide pillar is pushed to integrally descend, the damping spring is compressed, the outer part is formed by extending the mounting frame and the welding gun part, when the hydraulic oil is withdrawn from the guide cylinder, the damping spring props against the guide pillar to rebound, and.

Preferably, the fixed oil frame of receiving is including receiving oil frame body, oil guide channel and annular oil duct, the activity joint of rotating the head in annular oil duct, the both ends of oil guide channel communicate with annular oil duct and the oiling mouth of receiving the oil frame body respectively, be equipped with the stopper in the annular oil duct and end the piece, the stopper with end the piece with the annular oil duct split for being located the stopper with end the inferior arc part of piece inboard and being located the major arc part in the outside, the stopper surface has been seted up the through-hole and has been linked together annular oil duct and major arc and minor arc part, and No. two oil pipes are to receiving during the oiling in the oil frame body oil filler point, and hydraulic oil can get into the minor arc part of annular oil duct earlier, then enter into the major arc part of annular oil duct through the stopper.

Preferably, the major arc part of the annular oil duct is provided with an arc spring for elastically supporting the rotating head, the rotating head is movably clamped on the major arc part of the annular oil duct and is contacted with and limited by a limiting block when the arc spring is completely stretched, when an external oil filling port of the oil containing frame body injects oil into the annular oil duct through an oil guide channel, the rotating head and the rotating plate axially rotate along the direction of the annular oil duct and extrude the arc spring to contract, when the second oil pipe is communicated, hydraulic oil pushed by a piston in an oil cylinder is injected into the minor arc part of the annular oil duct through an oil path selection valve, the second oil pipe and the oil guide channel, and the rotating head is pushed to rotate along the annular oil duct by the only channel limiting block, so that the rotating plate, the transmission rod and the fine adjustment telescopic mechanism rotate, and the mounting frame can drive the welding gun to rotate, when the arc spring reaches the maximum contraction amount, the arc spring occupies a certain space of the annular oil passage, so that the displacement angle of the rotating head in the annular oil passage does not exceed one hundred eighty degrees, and the rotating angle of the welding gun installed outside is also within the range.

Preferably, the fixed inner side face that receives oil frame and rotor plate combination is provided with two sealing rings and seals, the anterior fixed mounting who receives the oil frame has the combined bay to provide support and axial rotation condition for the rotor plate.

Preferably, the blocking block is a cylindrical block with four through holes formed in the surface, the first half-cylinder block and the second half-cylinder block are combined to form a large cylindrical cavity, the blocking block is placed in the cavity, the first half-cylinder block, the second half-cylinder block and the first oil cavity are respectively provided with a communicating hole with a diameter smaller than that of the cylindrical cavity, when the blocking block is naturally attached to the first half-cylinder block and the second half-cylinder block due to gravity, the through holes of the blocking block cannot communicate oil from top to bottom, as shown in the eleventh drawing, when the whole oil path selection valve is driven by the second stepping motor to turn over by one hundred eighty degrees, the blocking mechanism formed by the first half-cylinder block, the second half-cylinder block and the blocking block falls integrally under gravity to block the oil cavity at the first position, and when the blocking mechanism falls, because hydraulic oil in the first oil cavity and the second oil pipe communicated with the first oil cavity is in a non-communication state, part of the oil needs to be discharged above the blocking mechanism, then No. two half-pillar pieces can receive the support of its below hydraulic oil by jack-up this moment, hydraulic oil can be followed through No. one half-pillar piece, the through-hole of shutoff piece and No. two half-pillar pieces are arranged to the second oil pocket in, provide the space of placing for the sinking of shutoff mechanism, when shutoff mechanism is complete to the bottom of second oil pocket, the shutoff piece also is located the inner chamber bottom of No. two half-pillar pieces this moment, the through-hole on its surface is stopped up by the inner chamber bottom of No. two half-pillar pieces, therefore the hydraulic oil of shutoff mechanism top can't pass through shutoff mechanism to No. two oil pipe rows, can only pass through second oil pocket to No. one oil pipe row, when No. two step motor gyration one hundred eighty degrees, when shutoff mechanism arranges in first oil pocket, the principle is the same.

Preferably, the surface of the inner rotating rod is provided with a strip-shaped bulge clamped with a strip-shaped groove in the inner cavity of the outer rotating rod, the inner rotating rod can drive the outer rotating rod to rotate when rotating, the outer rotating rod can move forwards when rotating due to the fact that the fixed sleeve block is fixed, the outer rotating rod and the inner rotating rod can slide, but the strip-shaped bulge of the inner rotating rod is clamped with the groove of the outer rotating rod, and the rotation of the inner rotating rod and the groove is not influenced.

The invention has the following beneficial effects:

1. according to the invention, oil is introduced into the oil receiving frame body through the second oil pipe, hydraulic oil is injected into the annular oil duct through the oil guide channel, so that the rotating head is pushed by the hydraulic oil to rotate along the annular oil duct, the rotating plate, the transmission rod, the mounting frame and the welding gun synchronously rotate, the maximum rotation angle of the rotating head reaches one hundred eighty degrees, full-angle coverage can be carried out on the welding part of the part by matching with a mechanical shaft, small-angle fine adjustment of the welding gun at the welding part of the part is effectively realized, the size of the fine adjustment rotating mechanism is miniaturized, the volume interference is eliminated, and the performance is stable.

2. According to the invention, oil is injected into the fine adjustment telescopic mechanism through the first oil pipe, hydraulic oil can press the guide pillar to move downwards to compress the damping spring, the mounting frame linked outside the guide pillar can drive the welding gun to synchronously extend, during oil return, the guide pillar can drive the mounting frame and the welding gun to simultaneously retract, so that the small-amplitude extension of the welding gun at the position is realized, when the welding gun is extended at a small amplitude, the welding can be realized without large-amplitude rotation of a mechanical shaft, the welding track precision is improved, and the mechanical loss is reduced.

3. According to the invention, the second stepping motor drives the oil path selection valve to directly rotate, and the plugging mechanism in the oil path selection valve directly plugs the oil outlet of the oil path selection valve by using gravity, so that the selection of the first oil pipe and the second oil pipe as oil through pipes is realized, the dual-purpose of one valve is realized, the working process is stable, and the selection efficiency is high.

Drawings

FIG. 1 is a schematic view of the assembly of the present invention with a robot;

FIG. 2 is a schematic view of the internal structure of the robot arm of the present invention;

FIG. 3 is a main structure display diagram of the present invention;

FIG. 4 is a schematic structural diagram of a pressure oil mechanism according to the present invention;

FIG. 5 is a schematic cross-sectional view of the ram, piston and cylinder of the present invention;

FIG. 6 is a schematic cross-sectional view of the inner and outer turnbars of the present invention;

FIG. 7 is an exploded view of the fine adjustment mechanism of the present invention;

FIG. 8 is a schematic front view of a stationary oil containment frame according to the present invention;

FIG. 9 is a schematic cross-sectional view of a fine adjustment mechanism of the present invention;

FIG. 10 is a schematic cross-sectional view of a stationary oil containment frame according to the present invention;

fig. 11 is a sectional view showing an internal structure of an oil passage selector valve of the present invention;

fig. 12 is an exploded view of the oil passage selector valve of the present invention.

In the figure: 1. a mechanical arm; 2. a first stepping motor; 3. a pressure oil mechanism; 31. an inner rotating rod; 32. fixing the sleeve block; 33. an outer rotating rod; 34. a top rod; 35. a piston; 36. an oil cylinder; 4. an oil path selector valve; 41. a valve body; 42. a first oil chamber; 43. a second oil chamber; 44. a first half-pillar block; 45. a second half-pillar block; 46. a plugging block; 47. a connector; 5. a second stepping motor; 6. an oil pipe I; 7. a second oil pipe; 8. finely adjusting the telescopic mechanism; 81. a guide cylinder; 82. a damping spring; 83. a guide post; 9. fine-tuning the rotating mechanism; 91. fixing an oil containing frame; 911. an oil receiving frame body; 912. an oil guide channel; 913. an annular oil passage; 914. a limiting block; 915. a stop block; 92. a rotating plate; 93. a transmission rod; 94. a seal ring; 95. an arc-shaped spring; 96. rotating the head; 97. a combined rack; 10. and (7) mounting frames.

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.

As shown in fig. 1 to 12, in the embodiment of the present invention, a trajectory control device for welding automobile parts includes a mechanical arm 1 of a welding machine body, and a first stepping motor 2 and a second oil pipe 7 fixedly mounted on the mechanical arm 1, an output shaft of the first stepping motor 2 is connected to a pressure oil mechanism 3 in a transmission manner, an output end of the pressure oil mechanism 3 is fixedly communicated with an oil way selection valve 4, a top and a bottom of the oil way selection valve 4 are respectively fixedly communicated with the second oil pipe 7 and the first oil pipe 6, an output shaft of the second stepping motor 5 is fixedly connected to the oil way selection valve 4, the other ends of the first oil pipe 6 and the second oil pipe 7 are respectively communicated with a fine adjustment telescopic mechanism 8 and a fine adjustment rotary mechanism 9, and a mounting frame 10 is fixedly mounted at the bottom of the fine adjustment rotary;

the fine adjustment rotating mechanism 9 comprises a fixed oil containing frame 91, a rotating plate 92, a transmission rod 93 and a rotating head 96, two ends of the transmission rod 93 are fixedly connected with the rotating plate 92 and the fine adjustment telescopic mechanism 8 respectively, the rotating head 96 is fixedly installed on the rotating plate 92, and when the fixed oil containing frame 91, the rotating plate 92 and the rotating head 96 are matched to drive the transmission rod 93 to rotate by oil pushing, the fine adjustment telescopic mechanism 8 rotates synchronously and axially.

The oil pressing mechanism 3 comprises an inner rotating rod 31, a fixed sleeve block 32 and an outer rotating rod 33, the inner rotating rod 31 is movably sleeved with the outer rotating rod 33, the outer rotating rod 33 is movably sleeved with the fixed sleeve block 32, the outer rotating rod 33 moves back and forth through the fixed sleeve block 32 when rotating, a top rod 34 is fixedly installed at the front end of the outer rotating rod 33, the top rod 34 is fixedly connected with a piston 35, the piston 35 is movably sleeved in an inner cavity of the oil cylinder 36, the oil cylinder 36 is fixedly communicated with an oil way selection valve 4, the inner rotating rod 31 is in transmission connection with an output shaft of a first stepping motor 2, connectors 47 located at the top and the bottom are respectively and fixedly communicated with a second oil pipe 7 and a first oil pipe 6, and the top rod 34 also has two oil pushing states and oil returning states in the oil cylinder 36 by pushing against the piston 35 when the outer rotating rod 33 rotates.

Wherein, the oil path selection valve 4 comprises two valve bodies 41, a first oil chamber 42 and a second oil chamber 43 are formed inside the two valve bodies 41 after the two valve bodies 41 are combined, the specifications of the first oil chamber 42 and the second oil chamber 43 are the same, the first oil chamber 42 and the second oil chamber 43 are communicated with the inner chamber of the oil cylinder 36 through an external connector of the valve body 41, connectors 47 are fixedly arranged at output ports at the top and the bottom of the valve body 41, a plugging mechanism consisting of a first half column block 44, a second half column block 45 and a plugging block 46 can be arranged in the first oil chamber 42 and the second oil chamber 43, the first half column block 44 and the second half column block 45 are fixedly welded, the plugging block 46 is movably sleeved in the inner chamber formed between the first half column block 44 and the second half column block 45, the valve body 41 is in transmission connection with the second stepping motor 5, when the two valve bodies 41 are installed, the two valve bodies can be fixed by adding an external extension edge, a screw and a sealing strip at, direct welding, where the fixation is made by direct welding, may also be used.

The fine adjustment telescopic mechanism 8 comprises a guide cylinder 81, a damping spring 82 and a guide pillar 83, the damping spring 82 is movably sleeved on the surface of the guide pillar 83 to serve as an elastic force restoring part of the guide pillar 83, the guide pillar 83 comprises a piston and a piston rod part which are movably sleeved in an inner cavity of the guide cylinder 81, an oil filling opening of the guide cylinder 81 is communicated with an oil pipe 6, the outer part of the piston rod of the guide pillar 83 is fixedly connected with the mounting frame 10, when the oil pipe 6 is filled into the guide cylinder 81, hydraulic oil returns to the upper space of the piston part of the guide pillar 83, then the guide pillar 83 is pushed to integrally move downwards, the damping spring 82 is compressed, the outer part shows that the mounting frame 10 and the welding gun part extend out, when the hydraulic oil is withdrawn from the guide cylinder 81, the damping spring 82 props against the guide pillar 83.

The fixed oil containing frame 91 comprises an oil containing frame body 911, an oil guiding channel 912 and an annular oil duct 913, the rotating head 96 is movably clamped in the annular oil duct 913, two ends of the oil guiding channel 912 are respectively communicated with oil filling ports of the annular oil duct 913 and the oil containing frame body 911, a limiting block 914 and a stopping block 915 are arranged in the annular oil duct 913, the limiting block 914 and the stopping block 915 divide the annular oil duct 913 into a minor arc part and a major arc part, the minor arc part is located on the inner side of the limiting block 914 and the stopping block 915, a through hole is formed in the surface of the limiting block 914 to communicate the annular oil duct 913 with the major arc part and the minor arc part, and when the second oil pipe 7 is filled with oil into an oil filling hole of the oil containing frame body 911, hydraulic oil can firstly enter the minor arc part of the annular oil duct 913 and then enters the major arc part of.

Wherein, the arc spring 95 is arranged at the major arc part of the annular oil duct 913 to elastically support the rotating head 96, the rotating head 96 is movably clamped at the major arc part of the annular oil duct 913, when the arc spring 95 is fully extended, the rotating head 96 is contacted with and limited by the limiting block 914, when the external oil injection port of the oil receiving frame body 911 injects oil into the annular oil duct 913 through the oil guide channel 912, the rotating head 96 and the rotating plate 92 axially rotate along the direction of the annular oil duct 913 and press the arc spring 95 to contract, when the second oil pipe 7 is connected, the hydraulic oil pushed by the piston 35 in the oil cylinder 36 is injected into the minor arc part of the annular oil duct 913 through the oil passage selector valve 4, the second oil pipe 7 and the oil guide channel 912, the rotating head 96 is pushed to rotate along the annular oil duct 913 through the only channel limiting block 914, so that the rotating plate 92, the transmission rod 93 and the fine adjustment telescopic mechanism 8 rotate, the arc spring 95 occupies a certain space in the annular oil passage 913 when it reaches the maximum contraction amount, so that the displacement angle of the rotary head 96 in the annular oil passage 913 is not more than one hundred eighty degrees, and the rotation angle of the externally mounted welding gun is within the range.

Wherein, the fixed medial surface that receives oil frame 91 and rotating plate 92 combination is provided with two sealing rings 94 and seals, and the anterior fixed mounting who receives oil frame 91 has built-up 97 to provide support and the axial rotation condition for rotating plate 92.

Wherein, the blocking block 46 is a cylinder block with four through holes on the surface, the first half-cylinder block 44 and the second half-cylinder block 45 are combined to form a larger cylindrical cavity, the blocking block 46 is arranged in the cavity, the first half-cylinder block 44, the second half-cylinder block 45 and the first oil cavity 42 are both provided with communicating holes with the aperture smaller than that of the cylindrical cavity, when the blocking block 46 is naturally attached to the first half-cylinder block 44 and the second half-cylinder block 45 due to gravity, the through holes of the blocking block 46 can not communicate oil from top to bottom, as shown in the eleventh figure, when the oil path selecting valve 4 is driven by the second stepping motor 5 to turn over for one hundred eighty degrees, the blocking mechanism formed by the first half-cylinder block 44, the second half-cylinder block 45 and the blocking block 46 falls integrally due to gravity to the non-communication state of the hydraulic oil in the first oil cavity 42 and the second oil pipe 7 communicated with the first oil cavity 42, so that the blocking mechanism falls, partial oil needs to be discharged above the plugging mechanism, at the moment, the second half column block 45 is supported by hydraulic oil below the second half column block and jacked up, the hydraulic oil is discharged into the second oil cavity 43 through the through holes of the first half column block 44 and the plugging block 46 and the second half column block 45, a placing space is provided for the plugging mechanism to sink, when the plugging mechanism is completely arranged at the bottom of the second oil cavity 43, the plugging block 46 is also positioned at the bottom of the inner cavity of the second half column block 45 at the moment, the through holes on the surface of the plugging block are plugged by the bottom of the inner cavity of the second half column block 45, therefore, the hydraulic oil above the plugging mechanism cannot be discharged to the second oil pipe 7 through the plugging mechanism and can only be discharged to the first oil pipe 6 through the second oil cavity 43, and when the second stepping motor 5 rotates by one hundred eighty degrees, the plugging mechanism is placed in the first oil cavity 42, and the principle is the same.

Wherein, the surface of internal rotating rod 31 is equipped with the strip arch of mutually joint with the strip recess of outer bull stick 33 inner chamber, and internal rotating rod 31 self can drive outer bull stick 33 when rotating and rotate, because fixed nest of blocks 32 is fixed motionless, causes outer bull stick 33 to move forward when rotating, and outer bull stick 33 and internal rotating rod 31 also can take place to slide but because the strip arch of internal rotating rod 31 and the recess of outer bull stick 33 are mutually joint, and both rotate and are not influenced.

The working principle and the using process are as follows:

when the angle of the welding gun needs to be adjusted, firstly, the second oil pipe 7 is selected as an oil through pipe, the second stepping motor 5 is adjusted to rotate the oil way selection valve 4, the joint of the second oil pipe 7 and the oil way selection valve 4 is located above, the first oil pipe 6 is located below, the first oil pipe 6 is blocked, the second oil pipe 7 can be filled with oil, the first stepping motor 2 is started to push the outer rotating rod 33, the ejector rod 34 and the piston 35, hydraulic oil in the oil cylinder 36 is pushed into the oil containing frame body 911 along the oil way selection valve 4 and the second oil pipe 7, the hydraulic oil enters the annular oil duct 913 along the oil guide channel 912, the rotating head 96 is pushed by the hydraulic oil to axially rotate along the annular oil duct 913, the arc-shaped spring 95 is compressed, and the transmission rod 93 drives the fine adjustment telescopic mechanism 8, the mounting frame 10 and the welding gun to rotate;

when the welding gun needs to advance and adjust, firstly, one oil pipe 6 is selected as an oil through pipe, the oil way selection valve 4 is rotated by adjusting the second stepping motor 5, the joint of the first oil pipe 6 and the oil way selection valve 4 is located above, the second oil pipe 7 is located below, the second oil pipe 7 is blocked, the first oil pipe 6 is conducted, then, hydraulic oil is pushed into the guide cylinder 81 along the first oil pipe 6 to push against the guide pillar 83 to advance, and the mounting frame 10 and the welding gun advance outwards.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an automobile parts welding is with orbit regulation and control device, includes arm (1) and fixed mounting in step motor (2) and No. two oil pipe (7) of arm (1) of welding machine body, its characterized in that: an output shaft of the first stepping motor (2) is in transmission connection with a pressure oil mechanism (3), an output end of the pressure oil mechanism (3) is fixedly communicated with an oil way selection valve (4), the top and the bottom of the oil way selection valve (4) are respectively and fixedly communicated with a second oil pipe (7) and a first oil pipe (6), an output shaft of the second stepping motor (5) is fixedly connected with the oil way selection valve (4), the other ends of the first oil pipe (6) and the second oil pipe (7) are respectively communicated with a fine adjustment telescopic mechanism (8) and a fine adjustment rotary mechanism (9), and a mounting frame (10) is fixedly mounted at the bottom of the fine adjustment rotary mechanism (9);

fine setting rotary mechanism (9) are including fixed oily frame (91), rotor plate (92), transfer line (93) and rotation head (96) of receiving, the both ends of transfer line (93) respectively with rotor plate (92) and fine setting telescopic machanism (8) fixed connection, rotate head (96) fixed mounting in rotor plate (92), fixed oily frame (91), rotor plate (92), rotation head (96) cooperation of receiving utilizes oil to push away when driving transfer line (93) and rotate, fine setting telescopic machanism (8) take place synchronous axial and rotate.

2. The trajectory control device for welding the automobile parts as claimed in claim 1, wherein: the oil pressing mechanism (3) comprises an inner rotating rod (31), a fixed sleeve block (32) and an outer rotating rod (33), the inner rotating rod (31) is movably sleeved with the outer rotating rod (33), the outer rotating rod (33) is movably sleeved with the fixed sleeve block (32) and the outer rotating rod (33) rotates through the fixed sleeve block (32) to move back and forth, a push rod (34) is fixedly mounted at the front end of the outer rotating rod (33), the push rod (34) is fixedly connected with a piston (35), the piston (35) is movably sleeved in an inner cavity of an oil cylinder (36), the oil cylinder (36) is fixedly communicated with an oil way selection valve (4), and the inner rotating rod (31) is in transmission connection with an output shaft of a stepping motor (2).

3. The trajectory control device for welding the automobile parts as claimed in claim 2, wherein: the oil way selection valve (4) comprises two valve bodies (41), a first oil cavity (42) and a second oil cavity (43) are formed in the two valve bodies (41) after the valve bodies (41) are combined, the specifications of the first oil cavity (42) and the second oil cavity (43) are the same, the first oil cavity (42) and the second oil cavity (43) are communicated with an inner cavity of the oil cylinder (36) through an external connector of the valve bodies (41), connectors (47) are fixedly installed at top and bottom outlets of the valve bodies (41), a plugging mechanism consisting of a first half column block (44), a second half column block (45) and a plugging block (46) is arranged in each of the first oil cavity (42) and the second oil cavity (43), the first half column block (44) and the second half column block (45) are fixedly welded, and the plugging block (46) is movably sleeved in an inner cavity formed between the first half column block (44) and the second half column block (45), the valve body (41) is in transmission connection with the second stepping motor (5), and the connectors (47) located at the top and the bottom are fixedly communicated with the second oil pipe (7) and the first oil pipe (6) respectively.

4. The trajectory control device for welding the automobile parts as claimed in claim 1, wherein: the fine adjustment telescopic mechanism (8) comprises a guide cylinder (81), a damping spring (82) and a guide column (83), wherein the damping spring (82) is movably sleeved on the surface of the guide column (83) and serves as an elastic force restoring part of the guide column (83), the guide column (83) comprises a piston and a piston rod part which are movably sleeved in an inner cavity of the guide cylinder (81), an oil filling port of the guide cylinder (81) is communicated with an oil pipe (6), and the outer part of the piston rod of the guide column (83) is fixedly connected with the mounting frame (10).

5. The trajectory control device for welding the automobile parts as claimed in claim 1, wherein: the fixed oil containing frame (91) comprises an oil containing frame body (911), an oil guiding channel (912) and an annular oil duct (913), a rotating head (96) is movably clamped in the annular oil duct (913), two ends of the oil guiding channel (912) are respectively communicated with the oil filling openings of the annular oil duct (913) and the oil containing frame body (911), a limiting block (914) and a stopping block (915) are arranged in the annular oil duct (913), the limiting block (914) and the stopping block (915) split the annular oil duct (913) into a minor arc part located on the inner side of the limiting block (914) and the stopping block (915) and a major arc part located on the outer side, and the surface of the limiting block (914) is provided with a through hole for communicating the annular oil duct (913) with the major arc part and the minor arc part.

6. The trajectory control device for welding the automobile parts as claimed in claim 5, wherein: the major arc part of annular oil duct (913) is provided with arc spring (95) and carries out the elasticity support to rotating head (96), rotating head (96) activity joint in annular oil duct (913) major arc part and when arc spring (95) fully stretches, rotating head (96) and stopper (914) contact and by its spacing, when the outside oiling mouth of receiving oil frame body (911) is through leading oil passageway (912) oiling in annular oil duct (913), rotating head (96) and rotor plate (92) can take place axial rotation and extrude arc spring (95) shrink along the direction of annular oil duct (913).

7. The trajectory control device for welding the automobile parts as claimed in claim 1, wherein: the fixed medial surface that receives oil frame (91) and rotor plate (92) combination is provided with two sealing rings (94) and seals, the anterior fixed mounting who receives oil frame (91) has built-up (97) to provide support and axial rotation condition for rotor plate (92).

8. The trajectory control device for welding the automobile parts as claimed in claim 3, wherein: the oil-water separation device is characterized in that the blocking block (46) is a cylindrical block with four through holes formed in the surface, a large cylindrical cavity is formed after the combination of the first half column block (44) and the second half column block (45), the blocking block (46) is placed in the cavity, communicating holes with the hole diameter smaller than the cylindrical cavity are formed in the first half column block (44), the second half column block (45) and the first oil cavity (42), and when the blocking block (46) is naturally attached to the first half column block (44) and the second half column block (45) due to gravity, the through holes of the blocking block (46) cannot be filled with oil from top to bottom.

9. The trajectory control device for welding the automobile parts as claimed in claim 2, wherein: the surface of the inner rotating rod (31) is provided with a strip-shaped bulge which is clamped with the strip-shaped groove of the inner cavity of the outer rotating rod (33).