CN213105181U - Welding positioning machining center for scissor arm of lifter - Google Patents

Abstract

The utility model relates to a welding positioning machining center of a scissor arm of an elevator, which comprises two machining positions and a welding robot, wherein the machining positions comprise a welding positioner and a positioning mechanism; the positioning mechanism comprises a bottom frame, a positioning assembly and a tensioning assembly, wherein the positioning assembly and the tensioning assembly are arranged on the bottom frame; the positioning assembly and the supporting assembly respectively comprise a base, a positioning base plate arranged on the base, positioning grooves arranged at the front end and the rear end of the base and clamping frames which are arranged at the inner sides of the positioning grooves and are provided with clamping plates, a positioning sleeve is arranged at the inner side of one clamping frame of the same positioning assembly, and a positioning column is arranged in each positioning sleeve; the tensioning assembly comprises a pneumatic tensioning pin, and the pressing assembly comprises a pressing groove and a quick clamp. The utility model is not only simple in structure, operation labour saving and time saving can realize the accurate location of each spare part of shear arm moreover, guarantees welded quality, improves welding efficiency.

Description

Welding positioning machining center for scissor arm of lifter

Technical Field

The utility model belongs to the technical field of lift scissor arm welding position, concretely relates to lift scissor arm welding position machining center.

Background

The existing elevator scissor arm is generally manually used for repeatedly measuring and positioning in the machining process, and then each part is assembled and welded, so that time and labor are wasted, deviation is easily caused during positioning, positioning accuracy is low, welding effect is influenced, then secondary repair welding is required, even the condition that parts are scrapped is generated, production efficiency is directly influenced, and production cost is increased. In traditional processing mode, generally all set up a processing position, need change another after accomplishing scissors arm welding again, direct influence welding efficiency like this.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an elevator scissor arm welding position machining center to solve the problem that scissor arm welding efficiency is low.

The utility model discloses a lift scissor arm welding position machining center is realized like this:

a welding positioning machining center for a scissor arm of an elevator comprises two machining positions which are arranged in parallel and a welding robot which is movably arranged on one side of the two machining positions, wherein the machining positions comprise welding position shifters which are arranged in pairs and a positioning mechanism which is rotatably arranged between each pair of the welding position shifters;

the positioning mechanism comprises a bottom frame, a positioning assembly and a tensioning assembly which are arranged on the bottom frame, and a supporting assembly and a pressing assembly are also arranged on the bottom frame of one positioning mechanism;

the positioning assembly and the supporting assembly respectively comprise a base and positioning base plates arranged on the left side and the right side of the base, the positioning assembly also comprises positioning grooves arranged at the front end and the rear end of the base and clamping frames which are arranged at the inner sides of the positioning grooves and are provided with clamping plates, a positioning sleeve is arranged at the inner side of one clamping frame of the same positioning assembly, and a positioning column is arranged in the positioning sleeve;

the tensioning assembly and the pressing assembly are respectively installed on the two side edges of the bottom frame in pairs and in opposite directions, the tensioning assembly comprises pneumatic tensioning pins, the two opposite pneumatic tensioning pins can move in opposite directions, and the pressing assembly comprises a pressing groove and a quick clamp matched with the pressing groove.

Furthermore, a stop block is arranged on the inner side of the positioning base plate, and a clamping block is arranged on the outer side of the positioning base plate;

the clamping block is connected with the clamping cylinder through a fixing plate;

and rolling wheels are arranged on the positioning base plate.

Furthermore, two groups of positioning assemblies are arranged on the bottom frame without the supporting assembly, and a step is arranged in a positioning groove far away from the other positioning assembly in each positioning assembly.

Furthermore, clamping openings with upward openings are formed in two sides of the clamping frame, and the clamping plates are installed in the clamping openings;

positioning notches with downward openings are formed in the two sides of the clamping plate;

and rollers are arranged on the outer side surfaces of the two sides of the clamping frame, the outer side surfaces of the two sides of the clamping opening and the outer side wall of the positioning notch.

Furthermore, a locking bolt for fixing the positioning column is arranged on the positioning sleeve.

Furthermore, the front side or the rear side of the positioning base plate is provided with a lifting seat, and a lifting cylinder is connected below the lifting seat.

Furthermore, the compressing assembly comprises a supporting frame, the compressing groove is arranged at the top of the supporting frame, the rapid clamp is arranged on the outer side of the supporting frame, and the compressing block is arranged above the compressing groove.

Furthermore, the pneumatic tensioning pin is transversely slidably mounted on the tensioning seat, a pushing cylinder with an outward piston rod is mounted in the tensioning seat, and the piston rod of the pushing cylinder is connected with the pneumatic tensioning pin.

Furthermore, brackets are arranged on the inner sides of two oppositely arranged tensioning seats at the end part of one end of the bottom frame.

Further, the two processing machines are longitudinally arranged in parallel, a longitudinal rail is arranged on one side of each processing machine, and the welding robot reciprocates on the rails through a base plate at the bottom of the welding robot.

After the technical scheme is adopted, the utility model discloses the beneficial effect who has does:

(1) the utility model is provided with two processing positions, and the alternating positioning and welding of the two shear arms can be realized through the movement of the welding robot on one side of the two processing positions, thereby further improving the welding efficiency and the automation degree of the shear arm processing;

(2) the positioning mechanism of the utility model can be driven by the welding positioner to rotate, thereby ensuring that the welding surface is always positioned on the horizontal plane in the welding process, and further ensuring the welding quality of the shear arm;

(3) the utility model discloses a locating component, supporting component, compress tightly the subassembly and the setting of the tight subassembly that rises can realize guaranteeing the welded quality to the accurate location of each spare part of shear arm, improve welding position's efficiency.

Drawings

The present invention will be further explained with reference to the drawings and examples.

FIG. 1 is a structural view of a welding, positioning and machining center for a scissor arm of an elevator of the present invention;

FIG. 2 is an enlarged view of portion A of FIG. 1;

FIG. 3 is a structural diagram of a positioning mechanism I of the welding, positioning and processing center of the scissor arm of the elevator of the utility model;

FIG. 4 is a structural diagram of a positioning mechanism II of the welding, positioning and processing center of the scissor arm of the elevator of the utility model;

FIG. 5 is a structural diagram of a positioning component I of the welding, positioning and processing center of the scissor arm of the elevator of the utility model;

FIG. 6 is a structural diagram of a positioning component II of the welding, positioning and processing center of the scissor arm of the elevator of the utility model;

fig. 7 is a structural diagram of a positioning component iii of the welding, positioning and processing center of the scissor arm of the elevator of the utility model;

FIG. 8 is a view of the assembly of the clamp frame and the clamp plate of the welding and positioning center for the scissor arm of the elevator of the present invention;

fig. 9 is a structural view of a support assembly of the welding positioning machining center for the scissor arm of the elevator of the present invention;

fig. 10 is a structural diagram of a tension assembly (not provided with a tension seat housing part) of the welding positioning machining center of the scissor arm of the elevator of the utility model;

fig. 11 is a structural view of a hold down assembly of the welding and positioning machining center for the scissor arm of the elevator of the present invention;

FIG. 12 is a view showing the positioning state of the scissor arm I on the positioning mechanism I of the welding positioning machining center for the scissor arm of the elevator of the utility model;

FIG. 13 is a view showing the positioning state of the scissor arm II on the positioning mechanism II of the welding positioning machining center for scissor arms of elevators

FIG. 14 is a view showing the positioning state of the scissor arm III on the positioning mechanism II of the welding positioning machining center for scissor arms of elevators

In the figure: bottom frame 1, vertical beam 11, cross beam 12, inner cross beam 13, mounting plate 14, positioning pad 21, positioning slot 22, clamping frame 23, clamping plate 24, positioning sleeve 25, positioning column 26, supporting seat 27, top plate 28, side plate 29, side top plate 210, stopper 211, clamping block 212, fixing plate 213, clamping cylinder 214, rolling wheel 215, step 216, clamping opening 217, positioning notch 218, roller 219, locking bolt 220, lifting cylinder 221, pneumatic tensioning pin 31, tensioning seat 32, pushing cylinder 33, positioning cylinder 34, pin cylinder 35, connecting plate 36, tensioning cylinder 37, tensioning pin 38, sleeve 39, guide rod 310, bracket 311, pressing slot 41, quick clamp 42, supporting frame 43, pressing block 44, welding robot 51, welding positioner 52, 53, rail 54, rack seat plate 55, translation motor 56, welding wire barrel 57, gun cleaner 58, control mechanism 59, vertical rod 61, cross rod 62, a short shaft sleeve 63, a V-shaped plate 64 and a long shaft sleeve 65.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Be applicable to the utility model discloses a scissor arm of welding position frock mainly includes three kinds:

the scissor arm I comprises two vertical rods 61 arranged in parallel and two cross rods 62 vertically arranged between the two vertical rods 61, a long shaft sleeve 65 penetrating through the two vertical rods 61 is arranged at one end of each vertical rod 61, two concave V-shaped plates 64 are arranged between the cross rods 62, and short shaft sleeves 63 are respectively arranged on the V-shaped plates 64, the middle positions of the vertical rods 61 and one ends far away from the long shaft sleeves 65;

the scissor arm II comprises two parallel vertical rods 61 and two cross rods 62 vertically arranged between the two vertical rods 61, the cross rods 62 are arranged at the positions, close to the end parts, of the vertical rods 61, and short shaft sleeves 63 are respectively arranged at the two ends and in the middle of the vertical rods 61;

scissor arm III includes two montants 61, and the both ends of montant 61 and centre also are provided with stub axle sleeve 63, and is provided with two pairs of vertical and montant 61's horizontal pole 62 on the montant 61 inner wall between two adjacent stub axle sleeves 63, and every installs a pair of V template 64 between every pair of horizontal pole 62 respectively, and one of them pair of V template 64 opening is down, and another pair of V template 64 opening is upwards, and also installs the axle sleeve on the V template 64.

As shown in fig. 1 to 14, an elevator scissor arm welding positioning machining center comprises two machining positions arranged in parallel and a welding robot 51 movably arranged on one side of the two machining positions, wherein the machining positions comprise welding position shifters 52 arranged in pairs and a positioning mechanism rotatably arranged between each pair of welding position shifters 52; the positioning mechanism comprises a bottom frame 1, a positioning assembly and a tensioning assembly which are arranged on the bottom frame 1, wherein a supporting assembly and a pressing assembly are also arranged on the bottom frame 1 of one positioning mechanism; the positioning assembly and the supporting assembly respectively comprise a base, positioning base plates 21 arranged on the left side and the right side of the base, positioning grooves 22 arranged at the front end and the rear end of the base, clamping frames 23 arranged on the inner sides of the positioning grooves 22 and provided with clamping plates 24, a positioning sleeve 25 is arranged on the inner side of one clamping frame 23 of the same positioning assembly, and positioning columns 26 are arranged in the positioning sleeve 25; the tensioning assembly and the pressing assembly are respectively installed on two side edges of the bottom frame 1 in pairs and opposite to each other, the tensioning assembly comprises pneumatic tensioning pins 31, the two opposite pneumatic tensioning pins 31 can move in opposite directions, and the pressing assembly comprises a pressing groove 41 and a quick clamp 42 matched with the pressing groove 41.

Positioning mechanism I that is located the left side is used for the location of scissors arm I, and positioning mechanism II that is located the right side is then used for the location of scissors arm II and scissors arm III.

Specifically, the positioning pad 21 is used for positioning the vertical rod 61, the positioning groove 22 is used for positioning the cross rod 62, the clamping frame 23 with the clamping plate 24 is used for positioning the V-shaped plate 64, the positioning sleeve 25 and the positioning column 26 are used for positioning the short shaft sleeve 63 on the V-shaped plate 64, the pneumatic tensioning pin 31 is used for positioning the short shaft sleeve 63 on the vertical rod 61, and the pressing groove 41 and the quick clamp 42 are used for positioning the long shaft sleeve 65.

Preferably, in order to facilitate the installation of the positioning assembly, the tensioning assembly, the supporting assembly and the pressing assembly, the bottom frame 1 has a structure like a Chinese character 'mu', and includes two vertical beams 11 arranged in parallel, cross beams 12 arranged at two ends of the vertical beams 11, and two inner cross beams 13 arranged at the inner sides of the cross beams 12 and parallel to the cross beams 12.

The positioning mechanism I comprises a positioning component I, a supporting component, two pairs of tensioning components and a pair of pressing components, wherein the positioning component I and the supporting component are respectively installed on the inner cross beam 13, and the tensioning components and the pressing components are installed on the two vertical beams 11 in opposite directions in pairs.

And the positioning mechanism II comprises a positioning component II, a positioning component III and three pairs of tensioning components, wherein the positioning component II and the positioning component III are respectively arranged on the inner cross beam 13, and the tensioning components are also oppositely arranged on the two vertical beams 11 in pairs.

Preferably, to facilitate the positioning of the various parts of the positioning assembly and the support assembly, the positioning assembly and the support assembly further comprise a support base 27 fixed to the inner cross member 13, and a top plate 28 mounted on top of the support base 27. Wherein locating component I and locating component III still include the curb plate 29 of setting in supporting seat 27 both sides, and side roof 210 is still installed at the top of curb plate 29.

In the support assembly, the locating pad 21 is mounted on its top plate 28.

In the positioning assembly I and the positioning assembly III, the positioning cushion plate 21 is arranged on the side top plate 210, the clamping frame 23 and the positioning sleeve 25 are fixed on the top plate 28, and the positioning groove 22 is fixed in the U-shaped groove of the clamping frame 23.

In the positioning assembly II, the positioning cushion plate 21, the positioning groove 22, the clamping frame 23 and the positioning sleeve 25 are fixed on the top plate 28.

Preferably, because the scissor arm III for the positioning mechanism II is provided with two pairs of V-shaped plates 64, the opening of the V-shaped plate 64 positioned by the positioning assembly II faces downwards, the short shaft sleeve 63 is higher, and the opening of the V-shaped plate 64 positioned by the positioning assembly III faces upwards, and the short shaft sleeve 63 is lower. Therefore, in the positioning mechanism ii, the positioning base plates 21 of the positioning component ii and the positioning component iii have the same height and are used for positioning the same pair of vertical rods 61, the positioning sleeve 25 of the positioning component ii is higher than the positioning base plate 21, and the positioning sleeve 25 of the positioning component iii is lower than the positioning base plate 21.

In order to fix the position of the vertical rod 61, a stopper 211 is provided on the inner side of the positioning pad 21, and a clamp block 212 is provided on the outer side.

In order to be able to clamp the vertical rods 61 by means of the clamping blocks 212 in cooperation with the stop 211, the clamping blocks 212 are connected to a clamping cylinder 214 by means of a fastening plate 213.

The clamping cylinders 214 of the supporting assembly and the positioning assembly II are respectively arranged below the corresponding top plates 28, the clamping cylinders 214 of the positioning assembly I and the positioning assembly III are arranged below the corresponding side top plates 210, piston rods of the clamping cylinders 214 are arranged outwards and are connected with the corresponding clamping blocks 212 above the clamping cylinders through fixing plates 213, after the position of the vertical rod 61 is determined, the piston rods of the clamping cylinders 214 retract, the clamping blocks 212 move towards the direction of the stop block 211, the vertical rod 61 is fixed between the clamping blocks 212 and the stop block 211, and the position of the vertical rod 61 is fixed.

The clamp cylinder 214 may be selected from, but not limited to, a cylinder of the type TCL63 × 25S.

The positioning pad 21 is used for supporting and positioning the vertical rod 61, and a rolling wheel 215 is mounted on the positioning pad 21 for facilitating the adjustment of the vertical rod 61 in the longitudinal position.

The axial direction of the rolling wheel 215 is transversely arranged, when the vertical rod 61 is placed on the positioning base plate 21, if the longitudinal position of the vertical rod is deviated, the vertical rod 61 can be directly pushed, the position of the vertical rod 61 can be smoothly adjusted by utilizing the rotation of the rolling wheel 215, and the positioning precision is ensured.

Positioning mechanism II is used for the location to scissors arm II and scissors arm III, because the height and the position of scissors arm II and scissors arm III's horizontal pole 62 are different, in order to adapt to the location of the scissors arm of two kinds of structures, is provided with two sets of locating component on the underframe 1 of not installing the supporting component, and is provided with step 216 in the constant head tank 22 of keeping away from another locating component among every locating component.

Specifically, the positioning slot 22 is used for positioning the cross bar 62 of the scissor arm ii, and the step 216 located outside the positioning slot 22 is used for positioning the cross bar 62 of the scissor arm iii.

In the positioning process, the V-shaped plate 64 needs to be positioned by matching the card board 24 and the clamping frame 23, and in order to mount the card board 24 in the clamping frame 23, clamping openings 217 with upward openings are formed in two sides of the clamping frame 23, and the card board 24 is mounted in the clamping openings 217.

The clamping opening 217 is transversely arranged, and the clamping plate 24 is directly clamped in the clamping opening 217.

To achieve positioning of the V-shaped plate 64, the catch plate 24 is provided with downwardly opening positioning notches 218 on both sides.

Specifically, because the V-shaped plate 64 is disposed longitudinally, the positioning notch 218 is also disposed longitudinally.

The V-shaped plate 64 is positioned, placed on both sides of the clamping frame 23, and then the clamping plate 24 is clamped in the clamping opening 217 of the clamping frame 23 from above the V-shaped plate 64, and the V-shaped plate 64 is positioned in the positioning notch 218.

Because cardboard 24 and clamping frame 23 are the location that the realization was in the same place to V type board 64 for direct cooperation, and can produce slight deformation after V type board 64 welds and accomplish, increased the degree of difficulty when cardboard 24 dismantles and the scissor arm takes off, consequently for the convenience of the dismouting of cardboard 24, and the taking out of the scissor arm that the welding was accomplished, clamping frame 23's both sides lateral surface, clamping opening 217's both sides lateral surface, and all be provided with gyro wheel 219 on the location notch 218 lateral wall.

Specifically, the axial direction of the roller 219 is arranged longitudinally. The positioning notches 218 are located on two sides of the clamping frame 23, in order to facilitate the contact of the rollers 219 with two sides of the V-shaped plate 64, the rollers 219 are arranged on outer walls of two sides of the clamping frame 23, and are located on the same plane with the rollers 219 on two sides of the clamping opening 217, the rollers 219 on the two sides are both attached to the inner wall of the V-shaped plate 64 during positioning, and the rollers 219 on the outer side wall of the positioning notches 218 are attached to the outer wall of the V-shaped plate 64.

When the chucking plate 24 is removed, the frictional force between the chucking plate 24 and the V-shaped plate 64 is converted into rolling friction by the roller 219, thereby facilitating the removal of the chucking plate 24; when the welded scissor arm needs to be detached, the friction force between the V-shaped plate 64 and the clamping frame 23 is converted into rolling friction by the roller 219, so that the scissor arm can be conveniently detached from the positioning mechanism.

The positioning post 26 is provided to facilitate positioning of the bushings on the V-shaped plate 64 and to ensure concentricity of the two bushings, and a locking bolt 220 for fixing the positioning post 26 is mounted on the positioning sleeve 25 to fix the position of the positioning post 26.

When the short shaft sleeves 63 on the V-shaped plates 64 are positioned, the positioning column 26 penetrates into the short shaft sleeve 63 on one V-shaped plate 64 from the outer side of the V-shaped plate 64 and then penetrates through the positioning sleeve 25 to penetrate into the short shaft sleeve 63 on the other V-shaped plate 64, and after the positions of the two short shaft sleeves 63 are fixed, the locking bolt 220 is screwed downwards, so that the bottom of the locking bolt abuts against the positioning column 26, and the positions of the positioning column 26 and the short shaft sleeves 63 are fixed.

Preferably, in order to facilitate the installation of the positioning column 26, a handle is installed at the tail end thereof, and a conical head is arranged at the front end thereof.

After the scissor arm is welded, in order to be conveniently taken down from the positioning mechanism, a lifting seat is arranged on the front side or the rear side of the positioning base plate 21, and a lifting cylinder 221 is connected below the lifting seat.

In the present embodiment, the lifting seat of the positioning mechanism i is disposed at the rear side of the positioning pad 21, and the lifting seat of the positioning mechanism ii is disposed at the rear side of the positioning pad 21. The lifting seat is positioned above the corresponding top plate 28 or side top plate 210, and the piston rod of the lifting cylinder 221 is placed upwards and connected with the lifting seat through the top plate 28 or side top plate 210 above the lifting seat.

A partition plate fixed to the bottom of the side top plate 210 is provided between the lift cylinder 221 and the clamp cylinder 214 to partition them.

After the scissors arm is welded, the piston rod of the lifting cylinder 221 extends out to lift the scissors arm upwards from the positioning mechanism, so that the scissors arm can be conveniently taken down from the positioning mechanism by a worker.

Preferably, the lifting seat is a vertically arranged U-shaped structure, and the vertical rod 61 can be limited in the lifting process.

The lift cylinder 221 may be, but is not limited to, an ACQ63x 50 cylinder.

In order to position the long shaft sleeve 65, the pressing assembly comprises a supporting frame 43, a pressing groove 41 is arranged at the top of the supporting frame 43, a quick clamp 42 is arranged at the outer side of the supporting frame 43, and a pressing block 44 of the quick clamp is arranged above the pressing groove 41.

The pressing groove 41 is transversely arranged, the long shaft sleeve 65 penetrates through the end parts of the two vertical rods 61, the two ends of the long shaft sleeve are respectively placed in the pressing groove 41, and the rapid clamp 42 fixes the long shaft sleeve 65 in the pressing groove 41 by utilizing the pressing block 44 of the rapid clamp to realize the positioning of the long shaft sleeve 65.

Preferably, the quick clamp can be a pneumatic quick clamp.

The air cylinder of the pneumatic quick clamp can be selected from but not limited to air cylinders with the model number of JCKV63X 90.

The pneumatic tensioning pin 31 is used for positioning the short shaft sleeve 63 on the vertical rod 61, the vertical rod 61 with the short shaft sleeve 63 is placed into a processing position conveniently, the pneumatic tensioning pin 31 penetrates into the short shaft sleeve 63, the pneumatic tensioning pin 31 needs to be moved transversely, in order to achieve the purpose, the pneumatic tensioning pin 31 is transversely slidably mounted on the tensioning seat 32, the outward piston rod pushing cylinder 33 is mounted in the tensioning seat 32, and the piston rod of the pushing cylinder 33 is connected with the pneumatic tensioning pin 31.

The pneumatic tensioning pin 31 comprises a positioning cylinder 34 which is transversely arranged in the tensioning seat 32 and can transversely slide, and a pin cylinder 35 which is coaxially arranged on the inner side of the positioning cylinder 34, a connecting plate 36 which is arranged on the outer side of the tensioning seat 32 is arranged at the outer end of the positioning cylinder 34, a tensioning cylinder 37 is arranged on the outer side of the connecting plate 36, and a piston rod of the tensioning cylinder 37 penetrates through the positioning cylinder 34 to be connected with a tensioning pin 38 which is slidably arranged in the pin cylinder 35.

The pushing cylinder 33 is disposed in the tensioning seat 32 and located below the positioning cylinder 34, the installation direction of the pushing cylinder is opposite to that of the tensioning cylinder 37, and a piston rod of the pushing cylinder 33 penetrates through the rear wall of the tensioning seat 32 to be connected with the connecting plate 36.

In order to facilitate the sliding of the positioning cylinder 34, a sleeve 39 is disposed at the upper end of the interior of the tensioning seat 32, and the positioning cylinder 34 is slidably disposed in the sleeve 39.

When the short shaft sleeve 63 is positioned, the piston rod of the pushing cylinder 33 is in an extending state, the piston rod of the tensioning cylinder 37 is in a retracting state, after the vertical rod 61 provided with the short shaft sleeve 63 is placed to a processing position, the piston rod of the pushing cylinder 33 retracts to drive the pneumatic tensioning pin 31 to move inwards, the pin cylinder 35 penetrates into the short shaft sleeve 63, then the piston rod of the tensioning cylinder 37 extends to push the tensioning pin 38 to move forwards and expand, and therefore the short shaft sleeve 63 is positioned.

Preferably, a guide rod 310 is provided below the push cylinder 33 so as to guide the movement of the pneumatic tension pin 31.

The tensioning cylinder 37 can be selected from, but not limited to, cylinders of type ACQ63X 20.

The pushing cylinder 33 may be selected from, but not limited to, a cylinder of type ACQ63X 125.

In order to position the end of the vertical rod 61, a bracket 311 is installed inside two opposite tensioning seats 32 at one end of the bottom frame 1.

The bracket 311 of the positioning mechanism I is arranged on the two tensioning seats 32 at the rear end of the bottom frame 1, and the bracket 311 of the positioning mechanism II is arranged on the two tensioning seats 32 at the front end of the bottom frame 1.

The bracket 311 is disposed below the pin cylinder 35, and is of an L-shape that is vertically placed, and when positioning, the end of the vertical rod 61 is placed on the lateral portion thereof, and the vertical portion thereof is used to limit and position the end of the vertical rod 61.

In order to realize the alternate operation of the two processing stations, the two processing stations are arranged in parallel in the longitudinal direction, and a longitudinal rail 54 is provided on one side thereof, and the welding robot 51 reciprocates on the rail 54 through a base plate 53 on the bottom thereof.

Specifically, a rack 55 parallel to the rail 54 is arranged between the rails 54, a translation motor 56 is installed on the seat plate 53, a transmission shaft of the translation motor 56 extends to the lower portion of the seat plate 53 and is provided with a gear, the gear is meshed with the rack 55, the gear and the rack are rotated through the translation motor 56, and the gear and the rack 55 are matched to realize the movement of the welding robot 51.

Preferably, the welding robot 51 can be an OTC welding robot with model number BL6, but not limited thereto.

Further, the welding robot 51 is provided with a wire bucket 57 fixed to the seat plate 53 on one side and a gun cleaner 58 for cleaning the welding gun of the welding robot 51 on the other side.

The whole workstation is arranged on a workstation platform, and the workstation is provided with the safety grating, so that the safety of workers in the processing process is ensured.

In addition, for the purpose of operational control of the entire workstation, the side of the rail 54 facing away from the processing station is provided with a control mechanism 59.

In order to guarantee that every solder joint all is in horizontal position when the welding, guarantee welding quality, every as the initiative unit in the positioner 52, then another as the driven unit, wherein, install but not only be limited to the driving piece of motor in the initiative unit, and positioning mechanism adopts connecting pieces such as bearings to realize rotating with the driven unit and is connected, motor and the cooperation of driven unit through the initiative unit, can drive positioning mechanism and carry out 360 reciprocal rotations, make to correspond the welding point homoenergetic and rotate to the horizontal plane in welding process, thereby guarantee welding quality.

Preferably, the bottom frame 1 is connected to the welding positioner 52 through mounting plates at both ends thereof.

When the scissor arm I is welded, all parts corresponding to the scissor arm I are placed on the positioning mechanism I, namely, the vertical rod 61 with the short shaft sleeve 63 is placed on the positioning backing plate 21, the long shaft sleeve 65 penetrates through the two vertical rods 61 and is placed in the pressing groove 41, the cross rod 62 is placed in the positioning groove 22, the two ends of the V-shaped plate 64 with the short shaft sleeve 63 are clamped on the cross rod 62 and are positioned at the two sides of the clamping frame 23, the positions of the parts are adjusted, after the positions are determined, the vertical rod 61 is fixed by the clamping block 212 and the stop block 211, the long shaft sleeve 65 is fixed by the quick clamp 42, the V-shaped plates 64 are fixed by the pressing plate, the positioning column 26 penetrates through the short shaft sleeves 63 on the two V-shaped plates 64 and is fixed by the locking bolt 220, the short shaft sleeves 63 on the vertical rod 61 are fixed by the pneumatic tensioning pin 31, and then all parts of the scissor arm are welded at the joint.

When the scissor arm II and the scissor arm III are welded, corresponding parts are placed on the positioning mechanism II, and the positioning mode is the same as that of the scissor arm I.

After the welding is finished, the locking bolt 220 is loosened, the positioning column 26 and the clamping plate 24 are taken down, the quick clamp 42 is loosened, the pneumatic tensioning pin 31 is withdrawn, the clamping block 212 is moved outwards, then the shear arm which is finished by welding is lifted up by the aid of the lifting seat, and the scissors arm can be manually taken down.

Machining center carries out the course of working, and welding robot 51 carries out the welded while to the scissor arm on positioning mechanism I, and positioning mechanism II can carry out the dismouting of scissor arm, and the scissor arm that will have accomplished takes off to will treat that welded spare part installs and goes, treat welding robot 51 and accomplish the welding back of I department of positioning mechanism, then move this moment and weld the spare part of its top to one side of positioning mechanism II, then can carry out the change of scissor arm on positioning mechanism II this moment. The alternating processing is carried out in this way, the time difference is reduced, and the processing efficiency is improved.

The utility model provides a welding position machining center is simple structure not only, and operation labour saving and time saving can realize the accurate location of each spare part of shear arm moreover, guarantees welded quality, improves welding efficiency.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims (10)

1. The welding positioning machining center for the scissor arm of the elevator is characterized by comprising two machining positions which are arranged in parallel and a welding robot (51) which is movably arranged on one side of the two machining positions, wherein the machining positions comprise welding position changing machines (52) which are arranged in pairs and a positioning mechanism which is rotatably arranged between each pair of the welding position changing machines (52);

the positioning mechanism comprises a bottom frame (1), and a positioning assembly and a tensioning assembly which are arranged on the bottom frame (1), wherein a supporting assembly and a pressing assembly are also arranged on the bottom frame (1) of one positioning mechanism;

the positioning assembly and the supporting assembly respectively comprise a base and positioning base plates (21) arranged on the left side and the right side of the base, the positioning assembly further comprises positioning grooves (22) arranged at the front end and the rear end of the base and clamping frames (23) arranged on the inner sides of the positioning grooves (22) and assembled with clamping plates (24), a positioning sleeve (25) is arranged on the inner side of one clamping frame (23) of the same positioning assembly, and a positioning column (26) is arranged in each positioning sleeve (25);

the tensioning assembly and the pressing assembly are respectively installed on two side edges of the bottom frame (1) in pairs and in opposite directions, the tensioning assembly comprises a pneumatic tensioning pin (31), the two opposite pneumatic tensioning pins (31) can move in opposite directions, and the pressing assembly comprises a pressing groove (41) and a quick clamp (42) matched with the pressing groove (41).

2. The welding and positioning machining center of the scissor arm of the elevator according to claim 1, wherein a stop block (211) is arranged on the inner side of the positioning base plate (21), and a clamping block (212) is arranged on the outer side of the positioning base plate;

the clamping block (212) is connected with a clamping cylinder (214) through a fixing plate (213);

and rolling wheels (215) are arranged on the positioning base plate (21).

3. An elevator scissor arm weld positioning machining center according to claim 1, wherein two sets of positioning assemblies are provided on the base frame (1) without the support assembly, and a step (216) is provided in a positioning slot (22) of each positioning assembly that is remote from the other positioning assembly.

4. The welding and positioning machining center for the scissor arm of the elevator as claimed in claim 1, wherein the clamping frame (23) is provided with clamping openings (217) with upward openings at two sides, and the clamping plates (24) are installed in the clamping openings (217);

positioning notches (218) with downward openings are formed in the two sides of the clamping plate (24);

and rollers (219) are arranged on the outer side surfaces of the two sides of the clamping frame (23), the outer side surfaces of the two sides of the clamping opening (217) and the outer side wall of the positioning notch (218).

5. An elevator scissor arm welding and positioning machining center according to claim 1, wherein the positioning sleeve (25) is provided with a locking bolt (220) for fixing the positioning post (26).

6. The welding and positioning machining center for the scissor arm of an elevator according to claim 1, wherein a lifting seat is arranged on the front side or the rear side of the positioning base plate (21), and a lifting cylinder (221) is connected below the lifting seat.

7. An elevator scissor arm weld positioning machining center according to claim 1, wherein the hold down assembly comprises a support bracket (43), the hold down slot (41) is mounted on top of the support bracket (43), the quick clamp (42) is mounted outside of the support bracket (43), and its hold down block (44) is disposed above the hold down slot (41).

8. The welding and positioning machining center for the scissor arm of the elevator according to claim 1, wherein the pneumatic tensioning pin (31) is transversely slidably mounted on a tensioning seat (32), a pushing cylinder (33) with an outward piston rod is mounted in the tensioning seat (32), and the piston rod of the pushing cylinder (33) is connected with the pneumatic tensioning pin (31).

9. An elevator scissor arm welding and positioning machining center according to claim 8, wherein brackets (311) are mounted inside two oppositely arranged tensioning seats (32) at one end of the bottom frame (1).

10. An elevator scissor arm welding and positioning machining center according to claim 1, wherein two machining stations are arranged side by side in the longitudinal direction, and one side of the two machining stations is provided with a longitudinal rail (54), and the welding robot (51) reciprocates on the rail (54) through a base plate (53) at the bottom of the welding robot.

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