CN1027494C - Robotized handling device and sheet metal bending system featuring same - Google Patents

Abstract

The invention relates to a single arm operation device (5). A metal sheet (2) is fixed on the pick-up surface of a pick-up element (15), which is supported by a bracket (16) and could rotate around two vertical axial lines (A and B). A first element (31) is fixed with the pick-up element (15), which could rotate around a first axial line (A) perpendicular to the pick-up surface. A second element (32) supports the first element (31), which could rotate around a second axial line (B) perpendicular to the pick-up surface. The bracket (16) could move along three Cartesian axes (X, Y and Z) by means of the arm (24) and not change the position of the second axial line (B).

Description

Robotized handling device and sheet metal bending system featuring same

The present invention relates to a kind of single armed Handling device, be specially adapted to transport the sheet metal that will carry out crooked various sizes.The present invention is especially with relevant as the Handling device and the whole bending apparatus of a part in the automatic bending apparatus of sheet metal.

The structure of the Handling device that all are known does not all fit into transports the very big sheet metal of size difference.Its reason is that this Handling device all has a tensile cursor usually, and the framework of many pick-ups fixedly is housed on the arm.Usually, pick-up is magnetic (magnet) or pneumatic (sucker).Above the Handling device of said the sort of type a lot of shortcomings are arranged: processing specification is subjected to the restriction of above-mentioned framework; Device itself is very heavy; When transporting the thin plate of different size, must change pick-up member.

It is low that purpose of the present invention just provides a kind of cost, simple in structure and compact Handling device, and it can transport the thin plate of different size expeditiously, and is to adopt the mechanical type pick-up member.

For this purpose, according to the present invention, proposed a kind of single armed Handling device, it has by pick-up member metallic plate is fixed on the mode on the face of picking up of pick-up member and the above-mentioned pick-up member of metallic plate cooperating; Can make above-mentioned pick-up member move to each diverse location selectively, specifically, move on bending machine the device that gets in the position of crooked metal sheet automatically exactly; The feature of this Handling device is that it also has following various parts; The carriage that supports above-mentioned pick-up member and can make it to rotate: support the corresponding support unit of above-mentioned carriage, be used for making carriage in a reference frame, to move along three rectangular axes according to predetermined mode around two vertical axis; First drive member that above-mentioned carriage has the above-mentioned pick-up member of direct supporting and links into an integrated entity rigidly with it, this first drive member can be rotated with the above-mentioned vertical first axle of face that picks up in above-mentioned two vertical axis; And then be installed on the above-mentioned support unit with second drive member that rotating mode is supporting above-mentioned first drive member, can rotating in above-mentioned two vertical axis with the above-mentioned second parallel axis of face that picks up; Above-mentioned support unit is used for moving above-mentioned second axis and does not change its angle with respect to above-mentioned reference frame.

Illustrate one embodiment of the present of invention with reference to the accompanying drawings.

In the accompanying drawing, Fig. 1 is the perspective view of the Handling device of design according to the present invention and the metallic plate bending apparatus that is equipped with this Handling device.

Fig. 2 and Fig. 3 are respectively partial sectional view magnification ratio, detailed and top view in the Handling device of Fig. 1.

Fig. 4 is the Handling device among Fig. 1 and the side view of equipment.

Fig. 5,6,7,8 and 9 is operating process schematic diagrames of Handling device among Fig. 1.

The automatic equipment of the crooked metal sheet 2 of label 1 expression among Fig. 1 to Fig. 4, it is particularly suitable for, but not exclusive being applicable to made box 3.Equipment 1 has the known bending machine of an any type; One overlaps by known electronic equipment 6 for example microprocessor-controlIed automatic Handling device 5; The bin stock platform 7 of a thin plate 2; And one cover be used for finished product box 3 go out material conveying device 8.Bending machine 4 has punch face-to-face and parallel to each other 9 and die 10, be used in couples along axis C(Fig. 5 of the major axis that is parallel to bending machine 4) bending is placed on thin plate 2(Fig. 6, the Fig. 7 between above-mentioned punch 9 and the die 10), be also referred to as " axis of bending " with lower axis C.With respect to Handling device 5, back at axis C, bending machine 4 also have one 5 relative with Handling device, belong to movably post-positioning device 11 known type, numerical control, positioner is by electronic equipment 6 or similarly equipment control, and and bending machine 4 be assembled into one, be used for operating and the position of definite thin plate 2.According to the present invention, post-positioning device has a pair of any one known linear transducer 12(potentiometer, optical scale etc. at least), it has quite long range (in centimetre), be used for cooperating with the thin plate 2 that Handling device 5 is transported, measure the relative position of above-mentioned thin plate 2 and axis of bending C, by lead 13 control signal is imported electronic equipment 6 then, make electronic equipment 6 revise the position of thin plate 2 by means of handling Handling device 5 rightly.Moreover, according to the present invention, above-mentioned Handling device 5 is directly installed on the bending machine 4 and forms a whole, specifically, be mounted on the bending machine frame member 14 parallel with axis C, so as Handling device 5 can utilize bending machine 4 weight have enough rigidities of structure.With the difference (punch is movable or die is movable) of bending machine 4 kinds, member 14 can be made the part of the lathe bed of bending machine 4, in this case, and punch 9 motions, and Handling device 5 relatively maintains static; Member 14 also can be made the part of the movable link of supporting die 10, and in this case, in the course of work of bending machine 4, Handling device 5 rises towards fixing punch 9 with member 14 and die 10.

Handling device 5 is a kind of single armed devices, it has the pick-up member 15 of an any kind, be used for and individual thin plate 2 cooperatings, thin plate is fixed on picking up on the face of above-mentioned pick-up member 15, and it is mobile to force above-mentioned thin plate 2 and above-mentioned pick-up member 15 to be combined into one rigidly, and keeps common plane basically; It also has a carriage 16, is supporting above-mentioned pick-up member 15 and is forming one with it, makes pick-up member 15 rotate (Fig. 1,2 and 3) around two vertical axis A and B; It also has the support unit of carriage 16, is used for making carriage to move with respect to a reference frame along three rectangular axes, and the coordinate of this coordinate system deposits in the electronic equipment 6, and this coordinate system is fixed with respect to axis C.Specifically, make carriage exactly, and as the expression of giving an example among the figure, in direction motion perpendicular to upper edge, plane polar coordinate system Y, the Z of X-axis along parallel with axis C and be positioned at apart from the X-axis at axis C predetermined distance place and move.

The parts of above-mentioned frame support bracket 16 have: linearity, the base plate 18 of channel section preferably, it and member 14 fuse, its long axis is with above-mentioned X-axis line parallel and overlap; The power-actuated travelling carriage 19 of known usefulness for example by one first stepping Motor Drive, has encoder or other position sensor on the motor, travelling carriage can move on X-axis line direction along base plate 18; One is bearing in the column 21 on power-actuated second travelling carriage 22.Second travelling carriage leans against on the plane perpendicular to above-mentioned X-axis line, on the arc track Y vertical with the direction of motion of travelling carriage 19, moves on above-mentioned travelling carriage 19 along sector gear 23; And a straight-arm 24 that is vertically fixed on column 21 tops, straight-arm is vertical with the direction of motion X-axis line of base plate 18 and travelling carriage 19.Travelling carriage 22 can be driven by the stepping motor 25 with corresponding encoder; Also has then suitable its long axis of column 21 of stepping motor 26 drivings of corresponding encoder by another, on travelling carriage 22, be in the Z direction motion on same plane perpendicular to the Y direction and with the Y direction, thereby just moving perpendicular to X-axis line and travelling carriage 19 travel directions.

Two motor and position sensors 27,28 that are used for carriage 16 are arranged on the arm 24 in addition, support the front forked frame 30 of above-mentioned carriage 16 in addition.According to the present invention, carriage 16 has first member 31 and second member 32.First member directly supports pick-up member 15 and fuses rigidly with it; Second member 32 directly supports first member 31, but 15 connections of discord pick-up member, but be bearing on the front forked frame 30, holding the remaining parts of carriage 16 in second member, 32 inside.First member 31 (not shown) is in known manner driven by motor 27, be installed on second member 32, can rotate around axis A, second member 32 then in known manner (not shown) drive by motor 28, be contained on the front forked frame 30, so that can rotate around axis B.According to the present invention, first member 31 and second member 32 are the insides that are installed in another part crisscross, and their rotation A and B cross one another; Member 31 with 32 around the above-mentioned axis A of rotation and the direction of B be arranged to vertical and parallel respectively with the face that picks up of above-mentioned thin plate 2.In other words, the structure of carriage 16 is such, and promptly the plane of axis A and pick-up member 15 and the thin plate 2 caught by pick-up member are vertical, and axis B is parallel with above-mentioned thin plate 2, and coplane with it substantially.The direction of the rotation B of second member 32 also with the X-axis line parallel, and strictly parallel with punch 9, thereby, also just parallel with axis C.Supporting this structure of the member of carriage by means of above-mentioned these, also as can be seen, no matter how Handling device 5 moves, promptly no matter travelling carriage 19 and 22 and column 21 be separately or together to any direction action, axis B always moves together with carriage 16, do not change it and be stored in the angle of the reference frame of electronic equipment 6 relatively, and do not change position with respect to axis C.In other words, axis B is parallel with the axis of bending C of the bending machine 4 that Handling device 5 is installed all the time.

According to the present invention, pick-up member 15 is made up of the linear actuator 35 of a mechanical type clamp and a known type.The mechanical type clamp has jaw 33 pair of parallel, opposed and 34, and its horizontal section is T-shaped.Linear actuator is hydraulic pressure or pneumatic preferably, be used for making jaw 33 and 34 perpendicular to they separately the plane and move along the axis of symmetry itself.The axis direction of linear actuator 35 is arranged to overlap with rotation A, and in order to reduce size, cylinder handy pair of series, that use compressed air-driven is formed.Jaw 33 is assembled into one with member 31, and member 31 is cylindrical sleeves that are contained in the member 32, so can rotate around axis A on bearing 36.On the other hand, jaw 34 and bar 37 are assembled into one and are contained on the operating mechanism 35, and this root bar 37 is contained in again in the sleeve 31, and axis overlaps with it and can dally in sleeve 31.In order to prevent undesirable rotation, jaw 33 with 34 with a pair of connecting rod 42 hinge knots together at an end relative with picking up seamed edge 40, two connecting rods 42 mutually hinged and with above-mentioned jaw 33 and 34 hinge knots.Secondly, member 32 is by means of being contained on the corresponding bearing 45, and the bearing pin 44 that can freely rotate is hinged on the arm 24, and its hinge axes is coaxial with axis B.Arm 24 roughly is a parallelepiped, and be symmetrical in the axis D(Fig. 3 that intersects at same point with axis A, B), so just can make member 31, and and the pick-up member 15 that becomes one of member 31, rotate an angle, this angle is symmetrical in the plane vertical with axis of bending C, specifically, is symmetrical in axis D exactly.According to the present invention, in order to transport thin plate 2 in the clear, effectively, member 32 must can rotate 235 ° of angles around axis B at least; Simultaneously, member 31 can must be above 180 ° around the angle that axis A rotates.This point is owing to holding arms 24 is being done the sloping and reached near front forked frame 30 places, and front forked frame 30 is having two relative spill 30a(Fig. 2 perpendicular to the shape on the plane of axis B), turn to two pick-up member 15 on the extreme position to hold around axis B.These two extreme positions are represented with chain-dotted line in Fig. 2.In addition, column 21 is done narrowlyer than arm 24; And whole Handling device 5 at least in a side, be done forr a short time at the width that the direction perpendicular to axis D records than arm 24.On the contrary, the T clevis pawl 33 of symmetry and 34 size all will be made like this, promptly, when on perpendicular to the plane of axis A when horizontal direction is seen (Fig. 3), there is the wideest end of picking up seamed edge 40 to leave the distance " m " of rotation A, be greater than arm 24 perpendicular to half of the width of the orientation measurement of axis D, like this, when pick-up member 15 forwards position perpendicular to axis D to, the wideest above-mentioned end protrudes from arm 24 in the side, thereby prevented to interfere with each other, no matter on the pick-up member whether workpiece has been housed with arm.Like this, when pick-up member 15 is in position perpendicular to axis D (after axis A changes 90 °), rotate pick-up member 15, just can make thin plate 2 unhinderedly turn over 180 ° around axis B.

As required, Handling device 5 can also have at least one assisted pick member 50 identical with pick-up member 15, and this member 50 links into an integrated entity with the end 51 of base plate 18 on the position of regulation, is used for clamping with holding clamp being held in thin plate 2 on the pick-up member 15.Near above-mentioned assisted pick member 50, a fixing lateral register device 53 is housed, have the same linear transducer 54 of and sensor 12 above at least.Sensor 54 also links to each other with electronic equipment 6 by a circuit 55, so that adjust the position of Handling device 5 to above-mentioned electronic equipment 6 input control signals.During work, Handling device 5 takes out a thin plate 2 from bin stock platform 7 at every turn, it is clipped on the pick-up member 15 also transports on demand along on the many different Working position of axis C.Specifically, when wanting pick-up member 15 to clamp long limit of rectangular thin plate 2, in order to prevent the deflection of transition, the minor face of at first crooked pick-up member 15 upper thin sheets 2 is as Fig. 6 and shown in Figure 8.Pick-up member is rotated around axis A, so thin plate 2 just forwards the position perpendicular to its plane to, so just can and the picked member 15 relative long limit, one side of clamping put between punch 9 and the die 10.When above-mentioned long limit is clamped between punch 9 and die 10 (Fig. 7 and Fig. 9), pick-up member 15 just can be unclamped the pass and rotated once more, so as to clamp the part bending a minor face of thin plate 2, so just abdicate the last item limit and come in order to crooked.If in the time of can not doing like this because the size of thin plate 2 is little, when pick-up member 15 will replace, carrying position 5 can utilize the assisted pick member to clamp thin plate 2 to guarantee automation of operation.When pick-up member 15 transpositions, positioning accuracy keeps like this; Handling device 5 leans against the thin plate of being clamped by pick-up member 15 again 2 on lateral register device 53 and the sensor 54, subsequently, lean against again on post-positioning device 11 and the sensor 12, these sensors provide control signal by electronic equipment 6, thin plate 2 is correctly reorientated, for example, pick-up member 15 is rotated around axis A, and mobile travelling carriage and column 21.In addition, outside buckling work each time, pick-up member 15 guarantees to hold on thin plate 2, and, when thin plate because of the effect of punch 9 and die 10 skew motion took place at every turn, pick-up member was followed the tracks of this motion by unclamping thin plate and rotating around the axis B that is parallel to axis of bending C.By means of forwarding pick-up member 15 to plane arbitrary extreme position shown in Figure 5 around axis A, and then rotate around axis B, just can overturn thin plate 2 180 °, this illustrated.

From the above mentioned, advantage of the present invention can see too clearly.At first and most importantly, because the displacement of Handling device 5 is numerical controls, and sensor 12 and 54 have been adopted.The present invention has guaranteed that thin plate 2 is very high positioning accuracies.The second, because Handling device 5 is bearing on the part of bending machine, it is lighter and cheap than known those Handling devices.The 3rd, it guarantees to account for less the workshop area and whole bending apparatus is convenient to transportation and installation.At last, because post-positioning device 11 has been arranged, the bending machine in a set of equipment also can carry out manual operation with common mode like this, needs only an end that travelling carriage 19 is moved to base plate 18, and it is just passable that the place ahead of bending machine is available.

Claims (9)

1, a kind of single armed Handling device (5), it has by pick-up member makes sheet metal be fixed on the above-mentioned pick-up member that the mode on the face combines with sheet metal of picking up of pick-up member; Can make above-mentioned pick-up member move to each diverse location selectively, specifically, move on bending machine the device that gets in the position of bending metals thin plate automatically exactly; The feature of this Handling device is that it also has following various parts; The carriage (16) that supports above-mentioned pick-up member (15) and can make it to rotate around two vertical axis (A, B); Support the support unit (18,19,21,24) of above-mentioned carriage, can be used to make carriage in a reference frame, to move along three rectangular axes according to predetermined mode; First drive member (31) that above-mentioned carriage (16) has the above-mentioned pick-up member of direct supporting (15) and links into an integrated entity rigidly with it, this first drive member (31) is mounted to and can rotates around the first axle vertical with above-mentioned pick-up plane (A) in above-mentioned two vertical axis; And then be installed on the above-mentioned support unit (18,19,21,24) with second drive member (32) that rotating mode is supporting above-mentioned first drive member (31), so that can rotating in above-mentioned two vertical axis with above-mentioned parallel second axis (B) of face that picks up; Above-mentioned support unit (18,19,21,24) is used for moving above-mentioned second axis (B) and does not change its angle with respect to above-mentioned reference frame.

2, a kind of device as claimed in claim 1, it is characterized in that first member and second member (31,32) on the above-mentioned carriage (16) are the insides that is installed in another part, square crossing ground, their first rotation (A) and second rotation (B) cross one another.

3, a kind of device as claimed in claim 1 or 2, it is characterized in that above-mentioned pick-up member (15) is made up of a mechanical type clamp and a linear actuator (35), mechanical clamp has jaw pair of parallel, opposed (33,34), linear actuator (35) is used for making above-mentioned jaw (33,34) to move along the axis of symmetry of itself, and its axis arranged becomes to overlap with above-mentioned first rotation (A).

4, a kind of device as claimed in claim 3, it is characterized in that an above-mentioned jaw (33) and above-mentioned first member (31) are assembled into one, member (31) is a cylindrical sleeve that is contained in above-mentioned second member (32), can rotate around above-mentioned first axle (A), above-mentioned another jaw (34) then and bar (37) be assembled into one, be contained on the above-mentioned linear actuator (35), this root bar (37) is contained in the above-mentioned sleeve (31), and axis overlaps with it and can inside dally; To pick up the relative end of seamed edge (40) hinged with a pair of hinged connecting rod (42) its corresponding for above-mentioned jaw (33,34).

5, a kind of device as claimed in claim 4 is characterized in that the support unit of above-mentioned frame support bracket (16) has: the base plate of straight line shape (18); A power-actuated travelling carriage of usefulness (19) can move in above-mentioned base plate upper edge first rectilinear direction (X): one is bearing in the column (21) on power-actuated second travelling carriage (22), second travelling carriage (22) in above-mentioned first travelling carriage (19) upper edge perpendicular to the motion of the second direction (Y) of above-mentioned first direction (X), column (21) then can be at the same time perpendicular to the above-mentioned first and second both direction (X, Y) on the third direction (Z), long axis along itself is gone up motion at above-mentioned second travelling carriage (22), article one, be vertically fixed on the straight-arm (24) on above-mentioned column (21) top, it is perpendicular to above-mentioned first direction (X), and above-mentioned second member (32) at its front forked frame (30) upper support, second member (32) is mounted to can be around above-mentioned second rotation (B) rotation parallel with above-mentioned first direction (X).

6, a kind of device as claimed in claim 5, it is characterized in that the above-mentioned arm (24) that above-mentioned column (21) supports than it is narrow, above-mentioned whole Handling device (5), at least in a side, do than above-mentioned arm (24) little perpendicular to the measured width of the direction of the long axis (D) of arm; The above-mentioned above-mentioned jaw (33,34) that picks up on the object (15) is the T type and is symmetrical, and, having the wideest end of picking up seamed edge (40) leaves the predetermined distance (m) of above-mentioned first axle (A) and is greater than arm (24) in half of the measured width of the long axis direction of upright arm, like this, when above-mentioned pick-up member (15) forwards position perpendicular to the long axis of above-mentioned arm (24) to, the wideest above-mentioned end protrudes from above-mentioned arm (24) in the side, thereby has prevented the mutually mutual interference of jaw with arm (24).

7, a kind of device as claimed in claim 5, it is characterized in that this device also has at least one to be contained on the assigned position, with the assisted pick member (50) that above-mentioned base plate (18) links into an integrated entity, be used for clamping in the time with holding clamp and be held in thin plate (2) on the above-mentioned pick-up member (15) at least a portion of above-mentioned pick-up member (15) moving process.

8, a kind of device as claimed in claim 5 is characterized in that above-mentioned second member (32) can rotate in the front forked frame (30) on the above-mentioned arm (24), the minimum angles that can rotate is 235 °; Above-mentioned arm (24) is done the sloping at the position near above-mentioned front forked frame (30), front forked frame has two relative spills (30a) on the plane perpendicular to above-mentioned second rotation (B), be used for holding around the pick-up member (15) of second axis (B) when turning to extreme position; Above-mentioned first member (31) and above-mentioned pick-up member (15) are formed one, can rotate in above-mentioned second member, and rotating angle surpasses 180 ° and be symmetrical in the long axis (D) of above-mentioned arm (24).

9, a kind of device as claimed in claim 8.It is characterized in that this device also has one to be positioned near, the fixing lateral register device (53) of above-mentioned assisted pick member (50) at least, and also has a linear transducer (54) at least, be used for and above-mentioned thin plate (2) cooperating, so that measure the position of thin plate (2): above-mentioned linear transducer (54) can be connected with the electronic equipment (6) of the action that is used for controlling above-mentioned Handling device (5).

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