Summary of the invention
The object of this invention is to provide welding seam pick-up unit in a kind of polygon pipe, can carry out to polygon pipes such as square tubes the high accurancy and precision detection of inside weld, operating efficiency is high, can be in conjunction with being applied in automatic production line.
For achieving the above object, according to an aspect of the present invention, welding seam pick-up unit in a kind of polygon pipe is provided, this polygon pipe has N internal face, this device comprises the sensor stand for detection of the interior welding seam of polygon pipe, N-1 or N weld seam detection sensor are installed on described sensor stand, each weld seam detection sensor can be correspondingly in the tube chamber of described polygon pipe towards the respective inner walls face of described polygon pipe.
Preferably, described sensor stand is polygon support, with respect to the shape of the xsect of described polygon pipe, identical and cross-sectional area is ratio and dwindles the xsect of this polygon support, and described weld seam detection sensor is arranged on respectively on the respective external wall face of described polygon support accordingly.
Preferably, this device also comprises sensor feed mechanism, polygon pipe location-plate and detection and location feed mechanism, this detection and location feed mechanism and described sensor feed mechanism are separately positioned on the axial both sides of described polygon pipe, described detection and location feed mechanism is for be resisted against the axial end of described polygon pipe along the described polygon pipe of the axial promotion location-plate of described polygon pipe, and sensor feed mechanism is for driving described sensor stand stretch in the tube chamber of described polygon pipe or therefrom shift out.
More preferably, welding seam pick-up unit also comprises movement slide rail, slide block and for holding in the palm the bracket that carries described polygon pipe in above-mentioned polygon pipe, described bracket is slidably mounted on described movement slide rail by described slide block, and described sensor stand is arranged on the side direction of described movement slide rail and the described polygon pipe that can carry with described bracket pop-up is axially aligned.
Preferably, this device comprises parallel and spaced two described movement slide rails, is provided with the screw mandrel of arranging along movement direction in every described movement slide rail, and described slide block is connected with the swivel nut on described screw mandrel.
Preferably, between the described slide block on two described movement slide rails, be connected with the synchronising (connecting) rod of rigidity.
Preferably, described bracket comprises bracket body, saddle and picking-up elevating mechanism, described bracket body is arranged on described slide block, and described picking-up elevating mechanism is arranged on described bracket body and for lifting and drives described saddle, and described polygon piping support is on described saddle.
Preferably, on described saddle, be formed with right angle V-shaped groove.
More preferably, this device also comprises and is separately positioned on described movement slide rail both sides to locate two clamping mechanisms of described polygon pipe, each described clamping mechanism comprises fixture and fixture feed control mechanism, and described fixture feed control mechanism is used for driving described fixture to move and control this polygon pipe of clamping towards described polygon pipe;
Wherein, described at least one, clamping mechanism also comprises rotation positioning motor and rotation register control, described rotation positioning motor is used for driving described fixture to drive described polygon pipe to realize rotation location, described rotation register control is configured to receive the weld seam detection signal of described weld seam detection sensor and goes out described polygon pipe according to this calculated signals and rotates accordingly orientation angle, thereby controls described rotation positioning motor and realize the rotation of described rotation orientation angle.
Preferably, the described clamping mechanism of described sensor stand and homonymy can arrange along the movement direction interval of described movement slide rail, or described sensor stand and described clamping mechanism can be arranged along short transverse interval.
According to technique scheme, in polygon pipe of the present invention in welding seam pick-up unit, can stretch in polygon pipe by sensor feed mechanism driving sensor support, N-1 or N weld seam detection sensor are installed on sensor stand, can be in the time stretching in polygon pipe correspondingly towards N internal face of polygon pipe, to detect the weld seam on whole internal faces.Therefore, the internal face that is formed with high frequency weld seam will be detected and be located one by one, has reduced labor strength, and detecting reliability is strong and efficiency is high.Further, can be applicable in automatic assembly line operation, unify rotation location follow-up by automatic mechanism by the polygon pipe after detecting, make each polygon pipe the wall with high frequency weld seam towards unification, more saved manual arduous and inefficient.
Other features and advantages of the present invention are described in detail the embodiment part subsequently.
Brief description of the drawings
Accompanying drawing is to be used to provide a further understanding of the present invention, and forms a part for instructions, is used from explanation the present invention, but is not construed as limiting the invention with embodiment one below.In the accompanying drawings:
Fig. 1 is according to the vertical view of welding seam pick-up unit in the polygon pipe of the preferred embodiment of the present invention;
Fig. 2 is the left view of welding seam pick-up unit in the polygon pipe shown in Fig. 1, wherein, for clarity sake, has concealed the rotary positioning mechanism such as fixture, fixture feed control mechanism;
Fig. 3 is that the sensor stand in Fig. 1 stretches into the structural representation while carrying out weld seam detection in polygon pipe;
Fig. 4 is the structural representation of the polygon pipe transplanting mechanism in welding seam pick-up unit in the polygon pipe shown in Fig. 1 or Fig. 2;
Fig. 5 be in the polygon pipe shown in Fig. 1 the pipe fitting in welding seam pick-up unit by movement to the side view that aligns with rotary positioning mechanism to be rotated while locating, wherein, for clarity sake, the weld seam detection mechanisms such as sensor feed mechanism, polygon pipe location-plate, sensor stand have been concealed; And
Fig. 6 is that the clamp polygon pipe shown in Fig. 5 is to be rotated the clamping structure schematic diagram of location.
description of reference numerals
1 polygon pipe 10 high frequency weld seams
21 sensor feed mechanism 22 polygon pipe location-plates
23 sensor stand 24 first weld seam detection sensors
25 second weld seam detection sensor 26 the 3rd weld seam detection sensors
27 the 4th weld seam detection sensor 28 detection and location feed mechanisms
31 fixture 32 fixture feed control mechanisms
33 rotation positioning motor 41 movement slide rails
42 slide block 43 screw mandrels
44 screw mandrel drive motor 45 bracket bodies
46 synchronising (connecting) rods 47 hold up elevating mechanism
48 saddles
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is elaborated.Should be understood that, embodiment described herein only, for description and interpretation the present invention, is not limited to the present invention.
In the present invention, in the situation that not doing contrary explanation, the noun of locality of use as " upper and lower, top, the end " normally for direction shown in the drawings or for the each parts mutual alignment relationship description word vertically, on vertical or gravity direction.
As shown in Figure 1, Figure 2 with shown in Fig. 5, the invention provides welding seam pick-up unit in a kind of polygon pipe, this polygon pipe 1 has N internal face, described pick-up unit comprises the sensor stand 23 for detection of the interior welding seam of polygon pipe 1, N-1 or N weld seam detection sensor 24,25,26,27 are installed on sensor stand 23, each weld seam detection sensor can be correspondingly in tube chamber time towards the respective inner walls face of polygon pipe 1.Like this, as shown in the figure, at four internal faces corresponding to square tube, if adopt four weld seam detection sensors 24,25,26,27 to detect all internal faces without omitting, eliminate artificial undetected problem, improved detection accuracy.Those skilled in the art will be understood that, if adopt three weld seam detection sensors equally also can detect three internal faces corresponding in square tube, and then can determine that the internal face at interior welding seam place is or the not internal face of detection of residue in three internal faces that detected.In following embodiment, only set forth as example to there are the square tube of four internal faces and corresponding four weld seam detection sensors thereof.
Wherein, for ease of the location and installation of multiple sensors, sensor stand 23 is preferably polygon support as shown in Figure 3, i.e. illustrated square set, and with respect to the shape of the xsect of square tube, identical and cross-sectional area is ratio and dwindles the xsect of this square set.In Fig. 3, sensor stand 23 is similarly closed square, and the length of side on tetragonal each limit is roughly the half of the corresponding length of side of square tube.In four outside wall surface of sensor stand 23, mounting hole can be set, the first weld seam detection sensor 24, the second weld seam detection sensor 25, the 3rd weld seam detection sensor 26 and the 4th weld seam detection sensor 27 can be arranged on respectively on the mounting hole of four outside wall surface of sensor stand 23 accordingly by securing member.Insert polygon pipe 1 when interior at sensor stand 23 like this, between each sensor and the opposed inner walls face of polygon pipe 1, be formed with interval.Sensor can preferably adopt for example laser sensor, and four sensors are towards corresponding square tube internal face Emission Lasers.With respect to three internal faces that there is no high frequency weld seam 10, be formed with large many of the scattering degree of the laser beam on the internal face of high frequency weld seam 10, laser line path difference is also large many, thereby can judge that accordingly this internal face is the wall with high frequency weld seam 10.Certainly, also can adopt for example image formation by rays sensor that detects principle based on other, only make example at the laser sensor of this employing.Similarly, sensor stand 23 also can be formed as the shapes such as circular, and sensor also can detect welding seam in other except high frequency weld seam 10.It should be noted that in addition, due to the reason of manufacturing process, the high frequency weld seam 10 of square tube is generally formed on the midline position of certain internal face, therefore while adopting four angles of the sensor stand 23 of square set form to align with four angles of the polygon pipe 1 as square tube, one of them sensor can, directly towards high frequency weld seam 10, be more conducive to direct-detection and judgement.
In addition, four weld seam detection sensors 24,25,26,27 are preferably and are removably mounted on sensor stand 23, and sensor stand 23 is preferably removably connecting sensor feed mechanism 21 equally.Like this, sensor stand 23 is replaceable, to be adapted to the polygon pipe 1 of different size, detects in other words the polygon pipe 1 of various sizes, can make the spacing between laser sensor and square tube inwall can remain on all the time in effective detection distance of laser.Or, also can be to each installation of sensors being improved to design to the securing member on sensor stand 23 in Fig. 3, for example adopt and there is the bolt of multiple nuts, thus can be by installation of sensors on the diverse location of bolt, to regulate the spacing between sensor and square tube inwall.
Referring to Fig. 1 or Fig. 2, in polygon pipe, welding seam pick-up unit also can comprise sensor feed mechanism 21, polygon location-plate 22 and detection and location feed mechanism 28, this detection and location feed mechanism 28 and sensor feed mechanism 21 are separately positioned on the axial both sides of polygon pipe 1, detection and location feed mechanism 28 is for be resisted against the axial end of polygon pipe 1 along the axial promotion square tube location-plate 22 of polygon pipe 1, and sensor feed mechanism 21 stretches in the tube chamber of polygon pipe 1 or therefrom shifts out for driving sensor support 23.By the automatic operation feeding of sensor feed mechanism 21, can reduce labour intensity, increase work efficiency, especially in the time that combination is applied to automatic assembly line.Being positioned in automatic assembly line of square tube is even more important, when polygon pipe 1 moves to while axially aligning with sensor stand 23 along operating line, detection and location feed mechanism 28 can promote on an axial end that polygon pipe location-plate 22 is resisted against polygon pipe 1, with to polygon pipe 1 axial location, the sensor feed mechanism 21 of another axle side can axially promote sensor stand 23 and insert the interior suitable distance of polygon pipe 1.After detection completes, detection and location feed mechanism 28 and sensor feed mechanism 21 can be distinguished vertically away from each other, thereby unclamp polygon pipe 1, and sensor stand 23 is withdrawn into outside polygon pipe 1.In addition in other embodiments, sensor stand 23 also can be fixed position, shifts out by driving polygon pipe 1 that sensor stand 23 is stretched in tube chamber or therefrom.
On the basis of the above-mentioned weld seam detection mechanism that comprises sensor feed mechanism 21, sensor stand 23 and detection and location feed mechanism 28 etc., in polygon pipe of the present invention, welding seam pick-up unit also can comprise the polygon pipe transplanting mechanism for mobile polygon pipe 1 further.As shown in Figure 1 and Figure 4, this polygon pipe transplanting mechanism can comprise movement slide rail 41, slide block 42 and for carry the bracket of polygon pipe 1 to pop-up, bracket is slidably mounted on movement slide rail 41 by slide block 42, and 23 of sensor stands are arranged on a horizontal side of movement slide rail 41 and the polygon pipe 1 that can carry with bracket pop-up is axially aligned.Particularly, movement slide rail 41 can be single slide rail, but considers length and the weight of polygon pipe 1, for keeping steadily mobile, holder is carried reliable, preferably adopts double sided slider bar and the double cartridge of symmetrical structure in present embodiment, as shown in Figure 1, comprise parallel and spaced two movement slide rails 41.And, for realizing the accurately reliable and stroke self-locking performance of stroke of transfer square tube, in every movement slide rail 41, being also provided with the screw mandrel 43 of arranging along movement direction, slide block 42 is connected with the swivel nut on screw mandrel 43.Screw mandrel 43 can drive by manual rocking handle, in the present embodiment, considers the requirement of robotization, more preferably adopts screw mandrel drive motor 44.Screw mandrel drive motor 44 drives screw mandrel 43 to rotate to an angle, and drives swivel nut on screw mandrel 43 and connected slide block 42 thereof along a certain amount of stroke of rectilinear movement, thereby drives bracket and polygon pipe 1 to move same stroke along movement slide rail 41.In addition referring to Fig. 2 and Fig. 5, article two, between the slide block 42 on movement slide rail 41, also can be connected with the synchronising (connecting) rod 46 of rigidity, make two brackets of the left and right sides can synchronizing moving, make polygon pipe 1 that two brackets lift can retainer shaft to invariant position, polygon pipe 1, in the time sliding along movement slide rail 41, just can move to the position of axially aligning with the sensor stand 23 of the horizontal side of movement slide rail 41 like this.
Referring to Fig. 4, in the present embodiment, described bracket can comprise bracket body 45, saddle 48 and hold up elevating mechanism 47, bracket body 45 is arranged on slide block 42, hold up elevating mechanism 47 and can adopt for example vertical screw mandrel drive mechanism of arranging etc., it is arranged on bracket body 45 and for lifting and drives saddle 48, and 1 of polygon pipe is bearing on saddle 48.Like this, polygon pipe 1 not only can be followed bracket and be moved along movement slide rail 41, can also hold up lifting moving under the driving of elevating mechanism 47, mobile and control flexibly.In addition, for the more stable polygon pipe 1 of lifting, the relative position of polygon pipe 1 while making to move on saddle 48 is constant all the time, align with the corner with sensor stand 23 making it possible to as shown in Figure 3, as shown in Figure 2, on saddle 48, be preferably formed with right angle V-shaped groove, polygon pipe 1 supports and is placed in reliably in right angle V-shaped groove.
In addition, after the weld seam detection mechanism by above-mentioned is detected the high frequency weld seam 10 of polygon pipe 1, should manually or by other mechanism the wall with high frequency weld seam 10 of each polygon pipe 1 through detection be put towards unified direction, to facilitate the operation of the main chord of follow-up assembling tower machine standard knot or the main chord of lifting beam.Therefore, in polygon pipe of the present invention, welding seam pick-up unit also can comprise polygon pipe rotary positioning mechanism further, so that unified the polygon pipe after detecting 1 upset is located.As example, as shown in Figure 1 and Figure 5, rotary positioning mechanism in present embodiment comprises and is separately positioned on two clamping mechanisms of movement slide rail 41 both sides with location polygon pipe 1, each clamping mechanism comprises fixture 31 and fixture feed control mechanism 32, and fixture feed control mechanism 32 is for driving fixture 31 to move axially and control this polygon pipe 1 of clamping towards polygon pipe 1.Wherein, at least one clamping mechanism also can comprise rotation positioning motor 33 and rotation register control (not shown), rotation positioning motor 33 is for driving fixture 31 to drive polygon pipe 1 to realize rotation location, rotation register control is configured to receive the weld seam detection signal of weld seam detection sensor 24,25,26,27 and goes out the corresponding rotation orientation angle of polygon pipe 1 according to this calculated signals, thereby control rotation positioning motor 33 is realized the rotation of rotation orientation angle.Like this, moving to while axially aligning with clamping mechanism along movement slide rail 41 by bracket after weld seam detection, polygon pipe 1 can be clamped by two clamping mechanisms, and the rotation direction and the anglec of rotation that calculate by rotation register control, polygon pipe 1 is rotated to location, the high frequency weld seam 10 in polygon pipe 1 is put towards an ad-hoc location.
As shown in Figure 1, in the time of streamline automated job, sensor stand 23 is arranged along the movement direction interval of movement slide rail 41 conventionally with the clamping mechanism of homonymy.Operating personnel, robot or automatic material blanking mechanism can first be placed in polygon pipe 1 on the saddle 48 of bracket, under the driving that holds up elevating mechanism 47, polygon pipe 1 is flushed with the height of sensor stand 23, and the two are axially aligned.Then drive screw mandrel 43 by screw mandrel drive motor 44,1 movement of polygon pipe, to the position of aliging with sensor stand 23, is carried out to the detection operation of high frequency weld seam 10.After detection completes, detection signal is sent to rotation register control, drive screw mandrel 43 to drive 1 movement of polygon pipe to axially aligning with clamping mechanism simultaneously, clamp behind the axial two ends of polygon pipe 1, the rotation direction and the anglec of rotation that calculate according to rotation register control, drive fixture 31 to drive polygon pipe 1 to realize corresponding rotation location by rotation positioning motor 33.
What those skilled in the art can understand in addition is; the rotary positioning mechanism more than exemplifying and polygon pipe transfer mechanism are only for referencial use; those skilled in the art can design other mechanism that can realize identical function but have different internal structure, but all should be considered as in protection scope of the present invention.
In adopting according to polygon pipe of the present invention after welding seam pick-up unit, alternative current manual work mode, realizes automatic assembly line operation, and polygon pipe high frequency weld seam is carried out to automatic detection and location, reduction operation personnel's labour intensity plays supervisory role to product quality simultaneously.In actual production, can be used as the auxiliary detection device of the Automation of Welding streamline of tower machine standard knot, with the automatic turning device combination process of this streamline, automatic detection, the location of realizing polygon pipe, automaticity is high, detects and rotation accurate positioning.In addition, in above embodiment, only above-mentioned sensor stand 23 and weld seam detection sensor 24,25,26,27 thereof are designed for structure and the position characteristics of square tube and interior welding seam thereof by reference to the accompanying drawings, what those skilled in the art can understand is, also can extend to such as hexagonal tube during even the internal weld seams of pipe etc. detects of other pipe fitting, only need shape to sensor stand and number and the installation site of weld seam detection sensor to carry out respective change design.For example, hexagonal tube can correspondingly be installed five or six weld seam detection sensors, and pipe also can divide multiple sectors, a weld seam detection sensor of the corresponding installation in each sector.
Below describe by reference to the accompanying drawings the preferred embodiment of the present invention in detail, but, the present invention is not limited to the detail in above-mentioned embodiment, within the scope of technical conceive of the present invention, can carry out multiple simple variant to technical scheme of the present invention, for example, can be on the same position of the movement direction along movement slide rail 41 between sensor stand 23 and the clamping mechanism of homonymy, but the two is arranged at interval along short transverse.Like this, after weld seam detection, only can carry out clamping and rotation location by lifting moving, the pipe fitting movement process in the middle of having saved, such simple variant all belongs to protection scope of the present invention.
It should be noted that in addition, each concrete technical characterictic described in above-mentioned embodiment, in reconcilable situation, can combine by any suitable mode, for fear of unnecessary repetition, the present invention is to the explanation no longer separately of various possible array modes.
In addition, also can carry out combination in any between various embodiment of the present invention, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.