CN108655554A - A kind of feed mechanism of high-precision dot welding machine - Google Patents

Abstract

The invention provides a feeding mechanism of a high-precision spot welding machine, which belongs to the technical field of spot welding machines. It solves the problem of low welding quality in the prior art. The feeding mechanism of the high-precision spot welding machine, the high-precision spot welding machine, includes a work box, a welding table is arranged on the work box, one end of the welding table is provided with electrode 1, and the other end of the welding table is provided with electrode 2, and the welding material includes Part seat and part block, the part block is welded on the part seat, it is characterized in that one end of the welding machine table is provided with a placement frame, the feeding mechanism is arranged on one side of the placement frame, including the mounting block, and the placement frame is rotated to be provided with a second A screw rod, one end of the first screw rod is connected with a servo motor that can make it rotate, the first screw rod is provided with a nut one, the outside of the nut one is fixed with a slide seat one, and the mounting block is fixed on the slide seat one. The invention has the advantage of improving welding quality.

Description

A Feeding Mechanism of High Precision Spot Welding Machine

technical field

The invention belongs to the technical field of spot welding machines, and relates to a feeding mechanism of a high-precision spot welding machine.

Background technique

The spot welding machine adopts the principle of double-sided double-point overcurrent welding. When working, two electrodes pressurize the workpiece so that the two layers of metal form a certain contact resistance under the pressure of the two electrodes, and the welding current flows from one electrode to the other. Instantaneous thermal fusion is formed at the two contact resistance points, and the welding current flows from the other electrode along the two workpieces to this electrode to form a loop, without damaging the internal structure of the workpiece to be welded.

The welding accuracy of the spot welding machine largely depends on the feeding accuracy of the two welding parts. The feeding of the parts is well connected, which can improve the welding quality; at present, the feeding accuracy of spot welding machines on the market is low.

Contents of the invention

The purpose of the present invention is to solve the above-mentioned problems in the existing technology, and propose a feeding mechanism of a high-precision spot welding machine. The present invention has the characteristics of improving welding quality.

The object of the present invention can be realized through the following technical solutions: a feeding mechanism of a high-precision spot welder, a high-precision spot welder, including a work box, a welding table is arranged on the described work box, and one end of the welding table is provided with a Electrode 1, the other end of the welding table is provided with electrode 2, the welded material includes a part seat and a part block, and the part block is welded on the part seat, it is characterized in that, one end of the welding machine table is provided with a placement frame, the feeding The mechanism is arranged on one side of the placement frame, including a mounting block. The placement frame is provided with a first screw rod for rotation, and one end of the first screw rod is connected with a servo motor capable of making it rotate. The first screw rod is provided with a nut one, The outer side of nut one is fixed with slide seat one, the mounting block is fixed on slide seat one, and two guide columns are fixed on the placement frame. The guide columns are arranged on both sides of the first screw rod in parallel, and guide seats are set on the guide columns. , the guide seat is fixed with the mounting block, and several sliding bars are arranged in parallel on the mounting block. The surface is vertical, and one side of the placement frame is also fixed with a mounting seat 1 and a mounting seat 2, and a second screw rod is arranged to rotate between the mounting seat 1 and the mounting seat 2, and one end of the second screw rod is connected with a The drive motor that makes it rotate is also fixed with two connecting columns parallel to the second screw rod between the mounting base 1 and the mounting base 2. The nut 2 is threaded on the second screw rod, and the outer side of the nut 2 A slide seat 4 is provided, and the slide seat 4 is slidably arranged with the connecting column. A cross bar is fixed on the slide seat 4. A positioning rod is vertically fixed on the end of the cross bar near the placement frame. A rotating motor is fixed on the working box, and the rotation A pair of fixed seats are fixed on one side of the output shaft of the motor, and a third screw rod is arranged to rotate between the fixed seats. The third screw rod is coaxially connected with the output shaft of the rotating motor, and a spur nut and Anti-toothed nut, fixed columns are also fixed on both sides of the third screw rod, slider 1 is fixed outside the spur-toothed nut, two mounting holes 1 are opened on slider 1, slider 1 is slidably arranged on the fixed column, and the above-mentioned motor One is arranged on the first slider; the second slider is fixed on the anti-tooth nut, and two mounting holes two are opened on the second slider, the second slider is slidably arranged on the fixed column, and the above-mentioned electrode two is arranged on the second slider.

Basic principle: the parts block can slide in the space between the sliders, when the parts block close to the welding table is fed, it moves to the welding table through the positioning rod, and the rest of the parts blocks are moved to the welding table in turn by the width of a part block; when After all the parts blocks in one row have been fed, by starting the servo motor, the servo motor drives the first screw mandrel to rotate, the first screw mandrel rotates to drive the mounting block to move, and the part blocks in the other row move to below the positioning rod.

One side of the welding machine table is provided with a feeding mechanism capable of loading the parts seat. The feeding mechanism includes a work frame, and the work frame is arranged on the outside of the work box. The work frame is provided with a vibration The hopper, the vibrating hopper has an inclined downward conveying track. The conveying track is connected to the working box through the connecting seat. A bracket is fixed on the working box. A positioning block, the positioning block is provided with a positioning groove, the positioning groove matches the part seat, and the direction of the piston rod of the cylinder one is perpendicular to the conveying direction of the part seat. The part seat is placed in the vibrating hopper, and the part seat is conveyed to the conveying track through vibration. The positioning groove on the cylinder one can block the part seat at the port of the conveying track. When the cylinder one is activated, the part seat moves outward with the piston rod and close to the soldering station.

The top of the welding table is provided with a grasping mechanism capable of grasping parts seats, parts blocks and welded finished products. The grasping mechanism includes a base, and the base is fixed on the work box and rotates on the base. A fourth screw rod is provided, and a mounting column parallel to the fourth screw rod is arranged on the base. One end of the fourth screw rod is connected with a working motor capable of rotating it, and a nut three is threaded on the fourth screw rod. The nut three is fixed with the sliding seat two, the sliding seat two has a sliding hole one, the sliding seat two is slidably set with the mounting column, the sliding seat two is also fixed with the cylinder two, the piston rod of the cylinder two is vertically downward and the end is fixed There is a working block 1, a plurality of suction cups are installed on the working block 1, and the input end of the suction cups is connected with an air pump through a conduit. As soon as the working block moves back and forth, the part seat is sucked from the positioning groove by the suction cup and transported to the welding table.

The grasping mechanism also includes a nut four, the nut four is threadedly connected on the fourth screw rod, the nut four is fixed with a sliding seat three, the sliding seat three has a sliding hole two, the sliding seat three is slidably arranged with the mounting column, and the sliding seat three is slidably arranged with the mounting column. Cylinder three is also fixed on the seat three, the piston rod of cylinder three is vertically downward and the end is horizontally fixed with cylinder four, the piston rod of cylinder four and the piston rod of cylinder three are vertical on the horizontal projection plane, and described cylinder four The end of the piston rod is fixed with the second working block, and the second working block is provided with a manipulator. The working block 2 moves back and forth, grabs the part block from between the slide bars through the manipulator, and transports it to the part seat for welding. After welding, the welded product is directly grabbed and unloaded.

One side of the second screw rod is also provided with a blanking guide rail and a blanking box, the blanking box and the blanking guide rail are fixed on the working box, the blanking guide rail is inclined downward, and the output end of the blanking guide rail points to Feed box.

A cleaning mechanism capable of cleaning electrode one and electrode two is provided between the described cylinder one and the welding table, and the described cleaning mechanism includes cylinder five, the cylinder body of cylinder five is fixed on the work box, and the piston rod of cylinder five Vertically upwards, the piston rod end of cylinder five is also fixed with cylinder six, the piston rod of cylinder six is arranged horizontally and points to the welding platform, the piston rod end of the cylinder is fixed with a cleaning block, and a cleaning block is provided on the cleaning block. Groove, a silica gel sleeve is placed in the cleaning groove. The piston rod of cylinder five moves upwards, driving the cylinder body of cylinder six to move upwards, the piston rod of cylinder six moves to the welding table, the cleaning block rubs back and forth between electrode one and electrode two, and the debris on electrode one and electrode two things to clean up.

Compared with the prior art, the present invention has the following advantages:

1. In the present invention, by setting the working frame, the vibrating hopper, the conveying track, the bracket, the cylinder one, the positioning block and the suction cup, the parts seat can be automatically loaded to the welding table, which greatly improves the work efficiency.

2. In the present invention, by setting the installation block, servo motor, slide bar, installation seat 1, installation seat 2, positioning rod, cylinder 4 and manipulator, the parts block can be accurately grasped and put into the part seat accurately. The whole process Automatic operation ensures welding quality.

3. The present invention adopts the above structure by setting the first working block, the sucker, the second working block and the manipulator, and can transport the part seat, the part block and the welding finished product with high precision.

4. In the present invention, by setting the blanking guide rail and the blanking box, the welding finished product can be automatically unloaded, which greatly improves the production speed.

5. The present invention has the advantages of cleaning electrode one and electrode two by setting cylinder five, cylinder six and cleaning blocks.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

Fig. 2 is a top view of the welding station of the present invention.

In the figure, 1. Working box; 2. Welding station; 3. Electrode 1; 4. Electrode 2; 1; 11. Mounting block; 12. Servo motor; 13. Slide bar; 14. Mounting seat 1; 15. Mounting seat 2; 16. Positioning rod; 17. Rotating motor; 18. Base; 19. Working block 1; 20, suction cup; 21, working block two; 22, manipulator; 23, feeding box; 24, feeding guide rail; 25, cylinder five; 26, cylinder six; 27, cleaning block.

Detailed ways

The following are specific embodiments of the present invention and in conjunction with the accompanying drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.

As shown in Figure 1-2, a high-precision spot welding machine includes a working box 1. The welding objects of this high-precision spot welding machine include a part seat and a part block. The part block is welded on the part seat, and the work box 1 is set There is a welding table 2, one end of the welding table 2 is provided with an electrode 1 3, the other end of the welding table 2 is provided with an electrode 2 4, and one side of the welding machine table is provided with a feeding mechanism capable of loading parts. One end of the stand is provided with a placement frame 5, and one side of the placement frame 5 is provided with a feeding mechanism that can feed the parts block, and the top of the welding table 2 is provided with a grasping mechanism that can grab the part seat, the part block and the finished welding product.

The feeding mechanism includes a work frame 6, the work frame 6 is arranged on the outside of the work box 1, the work frame 6 is provided with a vibrating hopper 7, the vibrating hopper 7 has a conveying track 8 inclined downward, and the conveying track 8 passes through the connecting seat and the working box 1 connection, a bracket 9 is fixed on the working box 1, and the bracket 9 is close to the port of the conveying track 8, and the cylinder one 10 is fixed on the bracket 9, and the end of the cylinder one 10 is connected with a positioning block, and a positioning groove is provided on the positioning block for positioning The groove matches the part seat, and the direction of the piston rod of the cylinder one 10 is perpendicular to the conveying direction of the part seat.

The part seat is placed in the vibrating hopper 7, and the part seat is conveyed to the conveying track 8 through vibration. The positioning groove on the cylinder one 10 can block the part seat at the port of the conveying track 8, and the cylinder one 10 is started, and the part seat follows the piston. The bar moves outwards and approaches the welding station 2.

The feeding mechanism comprises a mounting block 11, and the above-mentioned placement frame 5 is provided with a first screw mandrel for rotation, and one end of the first screw mandrel is connected with a servo motor capable of making it rotate, and the first screw mandrel is provided with a nut one, and the nut one outside is fixed There is a slide seat 1, and the mounting block 11 is fixed on the slide seat 1. Two guide posts are also fixed on the placement frame 5. The guide posts are arranged on both sides of the first screw rod in parallel. The seat is fixed with the mounting block 11.

A plurality of slide bars 13 are arranged in parallel on the mounting block 11, and the distances between adjacent slide bars 13 are the same, and connecting blocks are placed between the distances, and the slide bars 13 are perpendicular to the first screw mandrel on the horizontal projection plane.

One side of placement frame 5 is also fixed with mount one 14 and mount two 15, and rotation is provided with the second screw mandrel between mount one 14 and mount two 15, and one end of the second screw mandrel is connected with can make it rotate. Two connecting columns parallel to the second screw rod are fixed between the mounting base 14 and the mounting base 2 15, the second screw rod is threadedly connected with the nut 2, and the outer side of the nut 2 is provided with a sliding seat Four, sliding seat four and connecting column sliding setting, on sliding seat four, be fixed with cross bar, and cross bar is vertically fixed with positioning rod 16 near an end of placement frame 5. The parts blocks can slide in the space between the slide bars 13. When the parts blocks close to the welding table 2 are fed, they are moved to the welding table 2 through the positioning rod 16, and the rest of the parts blocks are moved to the welding table 2 in turn by the width of one part block. After the part blocks of a row have all been fed, by starting the servo motor, the servo motor drives the first screw mandrel to rotate, and the first screw mandrel rotates to drive the mounting block 11 to move, and the part blocks of another row move to the positioning rod 16 below.

A rotating motor 17 is fixed on the working box 1, and a pair of fixed seats are fixed on one side of the output shaft of the rotating motor 17. A third screw mandrel is arranged for rotation between the fixed seats, and the third screw mandrel is coaxially connected with the output shaft of the rotating motor 17. , the third screw rod is threaded with a spur nut and an anti-tooth nut, fixed columns are fixed on both sides of the third screw rod, a slider 1 is fixed outside the spur nut, and there are two mounting holes on the slider 1 , Slider 1 is slidably set on the fixed column, the above-mentioned motor 1 is set on the slider 1; the anti-tooth nut is fixed on the outside of the slider 2, and there are two mounting holes 2 on the slider 2, and the slider 2 is slidably set on the fixed On the column, the above-mentioned electrode two 4 is arranged on the slider two. Start the rotating motor 17, and the rotating motor 17 drives the third screw mandrel to rotate, and the third screw mandrel rotates to drive the slider one and the slider two to move. According to the difference in the direction of rotation, the slider one and the slider two move closer or far away. Slider 1 and slider 2 move closer when welding is not required, and slider 1 and slider 2 stay away when welding is not required.

Grabbing mechanism comprises base 18, and base 18 is fixed on the working box 1, and the 4th screw mandrel is rotated on the base 18, is also provided with the mounting column parallel with the 4th screw mandrel on the base 18, and the 4th screw mandrel is arranged on the base 18, and One end of the screw rod is connected with a working motor that can make it rotate, and the fourth screw rod is threadedly connected with a nut 3, and the nut 3 is fixed with a sliding seat 2, and the sliding seat 2 has a sliding hole 1, and the sliding seat 2 and the mounting column are slidably arranged. , two cylinders are also fixed on the slide two, the piston rod of the two cylinders is vertically downward and the end is fixed with a work block one 19, and some suckers 20 are installed on the work block one 19, and the input ends of the suckers 20 are connected with air pump. The first working block 19 moves back and forth, and the component seat is sucked from the positioning groove by the suction cup 20 and transported to the welding table 2 .

The gripping mechanism also includes a nut four, which is threadedly connected to the fourth screw rod, and the nut four is fixed with a sliding seat three, and the sliding seat three has a sliding hole two, and the sliding seat three and the mounting column are slidably arranged, and the sliding seat three is fixed on the sliding hole two. Cylinder three is also fixed, the piston rod of cylinder three is vertically downward and the end is horizontally fixed with cylinder four, the piston rod of cylinder four and the piston rod of cylinder three are vertical on the horizontal projection plane, and the piston rod end of cylinder four is fixed Work piece two 21 is arranged, and work piece two 21 is provided with manipulator 22. Working block 2 21 moves back and forth, grabs the parts block from between the slide bars 13 by the manipulator 22, and transports them to the parts seat for welding, and directly grabs and unloads the welded product after welding.

One side of the second screw mandrel is also provided with blanking guide rail 24 and blanking box 23, and blanking box 23 and blanking guide rail 24 are all fixed on the working box 1, and blanking guide rail 24 is obliquely arranged downwards, and blanking guide rail 24 The output end points to the lower material box 23.

A cleaning mechanism capable of cleaning electrodes one 3 and electrodes two 4 is arranged between cylinder one 10 and welding table 2. The cleaning mechanism includes cylinder five 25, the cylinder body of cylinder five 25 is fixed on the work box 1, and the cylinder five 25 of cylinder Piston rod is vertically upwards, and the piston rod end of cylinder five 25 is also fixed with cylinder six 26, and the piston rod of cylinder six 26 is arranged horizontally and points to welding platform 2, and the piston rod end of cylinder is fixed with cleaning piece 27, and cleaning piece The 27 is provided with a cleaning tank, and a silica gel sleeve is placed in the cleaning tank. The piston rod of cylinder five 25 moves upward, driving the cylinder body of cylinder six 26 to move upward, the piston rod of cylinder six 26 moves to the welding table 2, and the cleaning block 27 rubs back and forth between electrode one 3 and electrode two 4, and the electrode Clean up the sundries on the first 3 and the second electrode 4.

The basic principle of this high-precision spot welding machine is as follows: first, the part seat is loaded onto the welding table 2 through the feeding mechanism and the grabbing mechanism; secondly, the part block is fed to the part seat through the feeding mechanism and the grabbing mechanism Then weld the part seat and the part block; finally, the welded product is unloaded through the grabbing mechanism; the part seat is made of thin sheets, and the part block needs to be placed in the part seat very accurately, and the efficiency of manual placement Low, poor placement effect, through the use of fully automated operation, the placement accuracy and welding effect are greatly improved.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which the present invention belongs can make various modifications or supplements to the described specific embodiments or adopt similar methods to replace them, but they will not deviate from the spirit of the present invention or go beyond the definition of the appended claims range.

In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer" etc. is based on the orientation or positional relationship shown in the drawings, or the The usual orientation or positional relationship of the invention product in use is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, therefore It should not be construed as a limitation of the present invention. In addition, the terms "a", "two", etc. are only used for distinguishing descriptions and should not be construed as indicating or implying relative importance. In the description of the present invention, it should also be noted that, unless otherwise clearly specified and limited, the terms "setting" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection, or Integral connection; it can be mechanical connection or electrical connection; it can be direct connection or indirect connection through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

Although this paper uses a lot of working box 1; welding table 2; electrode one 3; electrode two 4; placing frame 5; working frame 6; Servo motor; slide bar 13; mounting seat one 14; mounting seat two 15; positioning rod 16; rotating motor 17; base 18; working block one 19; sucker 20; working block two 21; Cylinder five 25; Cylinder six 26; Terms such as cleaning block 27, but do not exclude the possibility of using other terms. These terms are used only for the purpose of describing and explaining the essence of the present invention more conveniently; interpreting them as any kind of additional limitation is against the spirit of the present invention.

Claims (6)

1. a kind of feed mechanism of high-precision dot welding machine, high-precision dot welding machine, including work box, it is provided on the work box Welding bench, one end of welding bench are provided with electrode one, and the other end of welding bench is provided with electrode two, welding object include element mounting and Part block, part block welding is on element mounting, which is characterized in that, one end of the welding machine platform is provided with rack, this feeding Mechanism is arranged on the side of rack, including mounting blocks, rack rotation and is provided with the first lead screw, and one end of the first lead screw connects It is connected to the servo motor that it can be made to rotate, nut one is provided on the first lead screw, one outside of nut is fixed with slide one, mounting blocks It is fixed on slide one, two guide posts, the parallel both sides for being located at the first lead screw of guide post, guide post is further fixed on rack On be arranged with guide holder, guide holder is mutually fixed with mounting blocks, and several draw runners, adjacent draw runner are arranged in parallel on the mounting blocks Between spacing it is identical, link block is placed between spacing, draw runner and the first lead screw are perpendicular on horizontal plane, described The side of rack is further fixed on mounting base one and mounting base two, is rotated between mounting base one and mounting base two and is provided with second Bar, one end of the second lead screw are connected with the driving motor that it can be made to rotate, two are further fixed between mounting base one and mounting base two The root connecting pole parallel with the second lead screw is threaded with nut two, the outside setting of nut two on second lead screw There are slide four, slide four to be arranged with connecting pole sliding, cross bar is fixed on slide four, cross bar is solid vertically close to one end of rack Surely there is locating rod, rotary electric machine is fixed on the work box, the output shaft side of rotary electric machine is fixed with a pair of of fixed seat, It is rotated between fixed seat and is provided with third lead screw, the output shaft of third lead screw and rotary electric machine is coaxially connected, spiral shell on third lead screw Line is connected with positive teeth nut and anti-teeth nut, and third lead screw both sides are further fixed on fixed column, sliding block one is fixed with outside positive teeth nut, It is opened up on sliding block one there are two mounting hole one, sliding block one is slidably arranged in fixed column, and above-mentioned motor one is arranged on sliding block one； It is fixed with sliding block two outside anti-teeth nut, is opened up on sliding block two there are two mounting hole two, sliding block two is slidably arranged in fixed column, on Electrode two is stated to be arranged on sliding block two.

2. the feed mechanism of high-precision dot welding machine according to claim 1, which is characterized in that the side of the welding machine platform It can includes falsework by the feed mechanism of element mounting feeding, the feed mechanism to be provided with, and the falsework is arranged in work It is outside as case, vibrating bunker is provided on falsework, there is vibrating bunker delivery track diagonally downward, delivery track to pass through Connecting seat is connect with work box, and holder is fixed on work box, and holder is fixed with cylinder at delivery track port on holder One, the end of cylinder one is connected with locating piece, and locating slot, the locating slot and element mounting phase are offered on the locating piece Matching, the piston rod direction of cylinder one are vertical with element mounting conveying direction.

3. the feed mechanism of high-precision dot welding machine according to claim 1, which is characterized in that the top of the welding bench The grasping mechanism of element mounting, part block and welding finished product can be captured by being provided with, and the grasping mechanism includes pedestal, the base Seat is fixed on work box, is rotated on pedestal and is provided with the 4th lead screw, the peace parallel with the 4th lead screw is additionally provided on pedestal Column is filled, the 4th lead screw one end is connected with the work drive motor that it can be made to rotate, nut three, nut three are threaded on the 4th lead screw On be fixed with slide two, there is sliding eye one, slide two to be arranged with mounting post sliding on slide two, gas is further fixed on slide two Cylinder two, the piston rod of cylinder two is straight down and end is fixed with operation block one, and several suckers, sucker are equipped in operation block one Input terminal air pump is connected with by conduit.

4. the feed mechanism of high-precision dot welding machine according to claim 3, which is characterized in that the grasping mechanism also wraps Nut four is included, nut four is threaded on the 4th lead screw, and slide three is fixed on nut four, has sliding eye on slide three Two, the sliding of slide three and mounting post is arranged, and is further fixed on cylinder three on slide three, and the piston rod of cylinder three is straight down and end It is horizontally fixed with cylinder four, vertical on horizontal plane, the described cylinder of the piston rod and the piston rod of cylinder three of cylinder four Four piston rod end is fixed with operation block two, and manipulator is provided in operation block two.

5. the feed mechanism of high-precision dot welding machine according to claim 1, which is characterized in that the one of second lead screw Side is additionally provided with blanking guide rail and lower feed box, and lower feed box and blanking guide rail are each attached on work box, and blanking guide rail, which is tilted towards, to be divided into It sets, the output end of blanking guide rail is directed toward lower feed box.

6. the feed mechanism of high-precision dot welding machine according to claim 2, which is characterized in that the cylinder one and welding The cleaning mechanism that can be cleared up electrode one and electrode two is provided between platform, the cleaning mechanism includes cylinder five, gas The cylinder body of cylinder five is fixed on work box, and straight up, the piston rod end of cylinder five is further fixed on gas to the piston rod of cylinder five The piston rod of cylinder six, cylinder six is horizontally disposed with and is directed toward welding bench, and the piston rod end that the cylinder is worked as is fixed with cleaning block, Cleaning slot is offered on cleaning block, silica gel sheath is placed in the cleaning slot.