WO2019140597A1

WO2019140597A1 - Automated handle welding apparatus

Info

Publication number: WO2019140597A1
Application number: PCT/CN2018/073221
Authority: WO
Inventors: 张赞; 陈叶明
Original assignee: 常州恒联机械五金有限公司
Priority date: 2018-01-18
Filing date: 2018-01-18
Publication date: 2019-07-25

Abstract

An automated handle welding apparatus comprises a rotary handle welding table (1), a handle welding fixture (500), a handle tube opening fixed connection block weld touchup fixture (6), and a welding robot (7). The welding robot (7) comprises a robotic arm (71) arranged at a side edge of the rotary handle welding table (1) and a welding torch (72) arranged on the robotic arm (71) and used for welding a handle (560) in the handle welding fixture (500) and the handle tube opening fixed connection block weld touchup fixture (6). A handle body (561), a fixed connection block (563), and a flat short tube (562) forming the handle (560) are manually placed and fixed in the handle welding fixture (500) and are conveyed to a welding station by means of rotation of the rotary handle welding table (1). The welding robot (7) automatically performs a first time of welding, and if the fixed connection block (563) needs to be further welded for touchup or for strengthening, automated welding is again performed. The invention solves the technical problem that welding efficiency for handles of household appliances is low, and is easy to operate, thereby improving productivity.

Description

Handle automated welding equipment

Technical field

The present invention relates to the technical field of welding fixtures used in handle automated welding equipment.

Background technique

Referring to FIG. 14, the handle 560 of the home appliance, such as the handle of the refrigerator, generally adopts a curved stainless steel tube as the handle body 561. In order to facilitate the installation connection with the door panel, it is necessary to weld a fixed portion in the upper end of the handle body 561. The connecting block 563 is vertically welded with a flat short tube 562 at the lower end of the handle body 561 for fastening to the bottom surface of the door panel.

At present, most of them manually align the fixed connecting block and the flat short tube at the two ends of the curved tube by hand, and manually weld the two ends of the curved tube separately, which has the following disadvantages: 1. Artificial alignment operation, The alignment accuracy is determined by the operator's proficiency, and its alignment stability is poor. 2. The manual alignment operation has low alignment accuracy and is prone to error. 3. Manual alignment operation, low efficiency and labor.

technical problem

The main object of the present invention is to solve the technical problem of low welding efficiency of the handle of the home electric appliance, and to provide an automatic welding device for the handle.

Technical solution

An automatic welding device for handles, characterized in that the device comprises a handle welding rotary table, a handle welding fixture, a handle pipe joint fixing joint repair welding fixture and a welding robot;

The handle welding rotary table comprises a rotating base, and the rotary base plate is connected with a rotary table above the rotary base. The rotary table is divided into four stations, and each of the stations is respectively provided with a set of the handles. Welding fixture

The handle welding fixture includes a clamp base mounted on the rotary table, and one end of the clamp base is provided with a fixed connection block positioning assembly for positioning a fixed connection block, and the fixed connection block positioning assembly is mounted thereon for a limiting member for defining the left and right and upper and lower positions of the handle, the first clamping assembly for clamping one end of the handle is provided at one end of the clamp base adjacent to the fixed connecting block positioning assembly, and the other end of the clamping base is provided for clamping the other end of the handle a second clamping assembly, the clamp base is provided with at least one set of movable support members for elastically lifting the handle;

The handle pipe joint fixing block repair welding jig includes a repair welding jig bottom plate vertically fixedly mounted on the rotating table plate, and a handle hanger frame for the handle to be upside down with the pipe mouth facing outward is provided on the bottom plate of the repair welding jig, the handle a positioning pin disposed in cooperation with the screw hole of the handle is disposed on the pylon; a handle positioning block is disposed under the handle pylon on the bottom plate of the repair welding fixture, and a positioning groove matching the handle is disposed on the handle positioning block; a push clamp fixing block is disposed on the bottom plate of the clamp between the handle hanger and the handle positioning block, and a push clamp mechanism for elastically pressing the handle toward the repair welding clamp bottom plate is disposed on the push clamp fixing block;

The welding robot includes a mechanical arm disposed at one side of the handle welding rotary table, and a mechanical arm disposed on the mechanical arm for welding the handle of the handle welding fixture and the handle pipe joint fixing block repair welding fixture. Welding torch.

The technical solution further defined by the technical solution of the present invention includes:

A working position sensor assembly is disposed on the rotating base of the handle welding rotary table; the station sensor assembly is provided with four station sensing sensors from the inside to the outside, and the rotating table is provided with four The station sensing sensors respectively correspond to the station sensing holes, and the four station sensing holes are sequentially shifted by 90 degrees on the rotating platen.

The rotary drive mechanism includes an indexing mechanism that connects the rotating base and the rotating platen and an indexing motor that drives the indexing mechanism; the station sensing sensor assembly includes an inductor holder, and the sensor holder includes a stand a mounting plate and a horizontal mounting plate at the top of the vertical mounting plate, the vertical mounting plate being provided with a mounting hole for mounting the sensor holder on the indexing mechanism housing, the horizontal mounting plate There are sensor mounting holes for mounting four station inductive sensors that are mounted on the sensor mount by fasteners.

The clamp base comprises a horizontally disposed bottom plate and a vertical baffle on a rear side of the bottom plate, the bottom plate and the vertical baffle being an integrally formed structure or a split structure; one end of the bottom plate is provided for mounting and fixing Connecting the groove of the block positioning assembly, the fixed connection block positioning assembly comprises a vertical support plate, the bottom of the vertical support plate is installed in the groove, and the inner side of the vertical support plate is provided with a limiting member, the stand The top of the support plate is provided with a horizontal mounting plate extending inwardly, and the end of the horizontal mounting plate is provided with a paddle positioning assembly.

The paddle positioning assembly comprises a paddle assembly, a positioning rod column, a fixed connection block positioning rod, a fixed connection block positioning claw, and a through-pushing assembly, a positioning rod column, and a fixed connection block positioning, which are sequentially arranged from top to bottom. a rod and a top rod of the fixed connecting block positioning claw, the top rod hole on the fixed connecting block positioning rod is eccentrically arranged, the bottom end of the top rod is provided with a block, and the top of the top rod passes the fastener Fixed to the rotary paddle.

The first clamping assembly includes a first clamping bracket mounted on a bottom plate, the first clamping bracket includes a first mounting plate, and the first mounting plate is mounted with a first clamping operating handle. The first clamping operation handle is connected to the first clamping block by a first push rod, and both sides of the first clamping block are connected to the first mounting plate through the first guiding post.

The second clamping assembly includes a second clamping frame on a rear side of the bottom plate, the second clamping frame includes a second mounting plate and a clamping push block, and the second mounting plate is mounted with a second clamping frame The second clamping operation handle is connected to the clamping push block by a second push rod, and both sides of the clamping push block are connected to the second mounting plate through the second guide post.

The side of the clamping push block that is in contact with the handle is provided with a positioning post that cooperates with the positioning hole on the handle, and the outer side of the clamping push block is further provided with a clamping cover plate, and the clamping cover plate is mounted on the handle Positioning the post and then fastening the handle by the fastener; an adjusting screw is disposed between the clamping push block and the second push rod, and the two ends of the adjusting screw are respectively fastened and fixed by the fastening nut; The movable support member includes a movable block, a support spring and a support column, and the center of the movable block is provided with a stepped hole, and the large hole of the stepped hole is located at an upper portion for the support column to pass through, and the small hole of the stepped hole is located at a lower portion For supporting the support spring, the support spring sleeve is provided with a support column, the top of the support column extends into the large hole through the small hole, and the bottom of the support column abuts in the support column groove on the bottom plate .

The handle hanger comprises a hanger connection block vertically fixed on the bottom plate of the repair welding fixture, and a suspension bracket block parallel to the bottom plate of the repair welding fixture is vertically fixedly connected at the front end of the hanger connection block, and the left and right sides of the suspension bracket block are The left positioning pin and the right positioning pin are respectively disposed at two ends; the handle positioning block includes a left handle positioning block corresponding to the left positioning pin and a right handle positioning block corresponding to the right positioning pin; the pushing and clamping mechanism comprises There is a left push clamp mechanism corresponding to the left positioning pin and a right push clamp mechanism corresponding to the right positioning pin.

The push-pull mechanism comprises a push-pull seat, an L-shaped clamp arm is hinged on the push-clamping seat, an elastic pressing head is arranged on the L-shaped clamping arm, and an L-shaped handle is hinged at an upper corner of the L-shaped clamping arm, L-shaped A linkage arm is hinged between the corner of the handle and the push clamp base; the L-shaped clamp arm is provided with an adjustment slot, and the elastic compression head is tightly connected with the adjustment slot by a locking screw.

Beneficial effect

The handle body, the fixed connecting block and the flat short tube constituting the handle are manually clamped and fixed in the handle welding jig, and are rotated and transferred to the welding station by the handle welding rotary table, and the first welding is completed automatically by the welding robot, and the fixed connection is needed. When the block is repaired or further reinforced, the handle can be quickly hung and locked on the handle joint fixing block repair welding fixture. The fixed connection block is fixed because of the first welding, no need to fix and fix, and the fixed connection can be made. The block is completely exposed to the welding equipment, which is beneficial to the repair welding operation and effectively improves the welding production efficiency. In addition, the four station inductive sensors respectively correspond to the four station sensing holes on the rotating table, not only functioning as the rotating table, but also providing the control system with the number of handle welding fixtures in the welding state. The feedback signal can be pre-announced on the rotating platen with four markings corresponding to the four sets of handle welding fixtures. When the manual detection finds that there is leakage welding or welding is not in place, the corresponding button can be quickly welded after pressing the corresponding button. Quickly return to the welding station, and then manually step-by-step control or automatic control for repair welding, easy to operate, high efficiency.

DRAWINGS

1 is a schematic structural view of a handle welding rotary table of the present invention;

Figure 2 is an exploded perspective view of the rotary table and the rotating base of Figure 1;

Figure 3 is a schematic structural view of the rotary drive mechanism of Figure 2 mounted on a rotating base;

Figure 4 is a schematic structural view of the inductor assembly of Figure 2;

Figure 5 is a plan view of the rotary table in Figure 2;

Figure 6 is a schematic structural view 1 of the handle welding jig of Figure 1;

Figure 7 is a structural schematic view 2 of the handle welding fixture of Figure 1;

Figure 8 is a schematic structural view of the fixed connection block positioning assembly of Figure 6;

Figure 9 is an exploded perspective view of the paddle positioning assembly of Figure 8;

Figure 10 is a schematic structural view of the first clamping assembly of Figure 6;

Figure 11 is a structural schematic view 1 of the second clamping assembly of Figure 6;

Figure 12 is a second structural view of the second clamping assembly of Figure 6;

Figure 13 is a cross-sectional view of the movable support member of Figure 6;

Figure 14 is a structural schematic view of the handle of the welding product of Figure 6;

Figure 15 is a perspective view showing the three-dimensional structure of the repair joint of the handle pipe joint of the present invention;

Figure 16 is a perspective view showing the three-dimensional structure of the hand-held pipe joint fixing joint repairing clamp clamping and fixing handle of the present invention;

Figure 17 is a schematic enlarged plan view showing the push-pull mechanism of the repair joint of the handle pipe joint of the handle of the present invention;

18 is a schematic side elevational view showing the push-pull mechanism of the repair joint of the handle pipe joint of the present invention;

Figure 19 is a schematic perspective view of the present invention.

BEST MODE FOR CARRYING OUT THE INVENTION

Referring to Figures 14 and 19, the handle automatic welding apparatus of the present invention includes a handle welding rotary table 1, a handle welding jig 500, a handle nozzle fixed connection block repair welding jig 6, and a welding robot 7. The handle welding jig 500 is used to securely lock the handle body 561, the fixed connection block 563 and the flat short tube 562 constituting the handle 560, and is rotated and transferred to the welding station by the handle welding rotary table 1, and the first welding is automated by the welding robot 7. The welding robot 7 includes a robot arm 71 provided at one side of the handle welding rotary table 1, and a handle provided on the robot arm 71 for fixing the welding fixture fixture 500 and the handle nozzle fixing joint block 6 A welding torch 72 is performed. The handle pipe joint fixing block repair welding jig 6 is used to clamp the fixed handle 560 so that the welding robot 7 re-welds the feed fixing block 563.

As shown in FIG. 1 to FIG. 14 , the handle welding rotary table 1 of the present invention includes a rotating base 100 , and a rotating table 400 is disposed above the rotating base 100 , and a rotating table 400 is disposed between the rotating table 400 and the rotating base 100 . The drive mechanism 200 is rotated. The rotary drive mechanism 200 includes an indexing mechanism 210 that connects the rotary base 100 and the rotary platen 400, and an indexing motor (not shown) that drives the indexing mechanism 210. The indexing motor is mounted and fixed on the rotating base 100. The axis of the indexing motor is drivingly connected to the driving shaft 220 of the indexing mechanism 210. The rotating disk 230 of the indexing mechanism 210 is fixedly connected to the center of the rotating platen 400. Under the driving of the indexing motor, the rotating rotating disc 230 of the indexing mechanism 210 and the rotating platen 400 together perform an indexing rotary motion.

In order to improve production efficiency, although the welding robot can improve the welding efficiency and reduce the labor cost, there are many uncertainties in the welding process during the welding process, and there is a phenomenon that the welding or the welding is not in place, and the existing rotating table is generally According to the preset program, the rotation is unidirectionally cyclic. After the welding process is completed, it is found that there is no welding or welding, and it can only be treated as a defective product, which is not conducive to the rapid and immediate reversal of the rework, because the existing rotary table is positioned. The mechanism only has the positioning function, and it is impossible to determine that the current number of handle welding fixtures are in the welding state. When the manual inspection finds that there is leakage welding or welding is not in place, it can only be manually controlled to gradually retreat, the operation is very inconvenient and the efficiency is low.

A working position sensing sensor assembly 300 is disposed on one side of the indexing mechanism 210 of the present invention. The station sensing sensor assembly 300 is provided with four station sensing sensors 340 to 370 from the inside to the outside, and the rotating table 400 is arranged. The station sensing holes 410 to 440 corresponding to the four station sensing sensors 340 to 370 are respectively provided, and the four station sensing holes 410 to 440 are sequentially shifted by 90 degrees on the rotating platen 400 to separate the rotating platen 400. There are four processing stations to be processed, and a handle welding jig 500 is mounted on each work station to be processed.

Four station sensing sensors and a combination of station sensing holes corresponding to four station sensing sensors on the rotating platen 400, each station sensing hole corresponding to the corresponding station sensing sensor, when the rotating platen 400 After the rotary drive mechanism 200 drives the rotation to the respective station sensing holes respectively corresponding to the corresponding station sensing sensors, the station sensing sensor senses the rotation in position, transmits the rotation in-position signal to the control system, and the control system receives the rotation. After the in-position signal, the rotary drive mechanism 200 is controlled to stop, the rotary platen 400 is positioned at the station position for handle operation and machining, and after the operation and processing is completed, the rotary drive mechanism 200 continues to rotate forward to the next station. The combination of the station sensing sensor and the station sensing hole on the rotating platen 400 enables the rotating table 400 to be rotated in position to accurately ensure the rotation accuracy of the rotating table; the handle welding rotary table of the present invention is provided on the rotating platen 400 by four. Each station can be operated and clamped in advance at each station, so that the welding of the handle can be continued continuously, without Clamping down the middle of the handle, and effectively improve the overall production efficiency of the welding handle.

As shown in FIGS. 2 to 4, the station sensing sensor assembly 300 includes an inductor holder including a vertical mounting plate 310 and a horizontal mounting plate 320 at the top of the vertical mounting plate 310. The vertical mounting plate 310 is provided with a mounting hole 330 for mounting the sensor mounting bracket on the outer casing of the indexing mechanism 210. The mounting mounting hole 330 is an oblong adjusting hole and an oblong adjusting hole. The setting can adjust the height position of the sensor holder according to actual needs, thereby adjusting the height of the sensor at each station, effectively ensuring that the sensor can sense in time, improving the sensing accuracy and precision. The horizontal mounting plate 320 is provided with an inductor mounting hole for mounting four station sensing sensors 340 to 370, and the inductor is mounted on the inductor holder by a fastener.

As shown in FIG. 1 and FIG. 6 to FIG. 14 , a handle welding fixture 500 for gripping a handle is respectively installed at four stations on the rotary table 400, and four and four are respectively marked on the rotary table. The corresponding markings of the handle welding fixtures are detected. If the manual welding detects that there is leakage welding or the welding is not in place, the corresponding button welding fixture can be quickly returned to the welding station by pressing the corresponding button, and then manually step-by-step control or automatic control. Repair welding, easy to operate, high efficiency. For example, when the handle of the No. 3 handle welding jig is in the welding process, the inspector finds that the handle in the No. 1 handle welding jig has a place where the welding is not in place, and the tester presses the No. 1 button on the console, and the No. 3 handle is welded. The welding of the handle of the clamp ends, or the handle welding work of the No. 3 handle welding jig is immediately ended, the rotary table 400 is reversed, the handle in the No. 1 handle welding jig is returned to the welding station, and the manual stepwise control of the welding robot is performed. Return to the beginning of the repair welding, re-weld the weld in place, and restore the handle of the No. 3 handle welding fixture after welding.

One side of the rotary platen 400 is provided with a welding robot for welding a handle for welding a refrigerator handle 560, and the handle 560 includes an arcuate tube 561, a flat short tube 562, and an auxiliary fixed connection block 563. The handle welding jig 500 is for clamping and positioning the above-mentioned refrigerator handle 560, and the handle welding jig includes a jig base 510 including a horizontally disposed bottom plate 511 and a vertical baffle 512 located at a rear side of the bottom plate 511, the bottom plate The 511 and the vertical baffle 512 are an integrally formed structure or a separate structure, and the bottom plate 511 is provided for mounting the positioning fixed connection block positioning assembly 520, the first clamping assembly 530, the second clamping assembly 550, and the movable support member 540. The vertical baffle 512 is configured to cooperate with the first clamping component 530 to clamp the handle, thereby improving the clamping accuracy of the handle. One end of the clamp base 510 is provided with a fixed connection block positioning assembly 520 for positioning a fixed connection block, and the fixed connection block positioning assembly 520 is mounted with a limiting member for defining left and right and upper and lower positions of the handle, and the clamp base 510 One end of the fixed connection block positioning assembly 520 is provided with a first clamping assembly 530 for clamping one end of the handle, and the other end of the clamp base 510 is provided with a second clamping assembly 550 for clamping the other end of the handle, the clamp base The 510 is provided with at least one set of movable supports 540 for resiliently lifting the handles. The handle welding rotary table of the present invention is mainly composed of a clamp base 510, a fixed connection block positioning assembly 520, a first clamping assembly 530, a second clamping assembly 550 and a movable support member 540, which have a small overall structure. When the handle 560 is positioned, the fixed connection block 563 in the handle 560 is first positioned by the fixed connection block positioning component 520. After the fixed connection block 563 is positioned, the open end of the curved tube 561 is inserted into the fixed connection block 563, and then passed. Operating the first clamping assembly 530 to clamp the open end of the curved tube 561, after positioning the open end with the fixed connecting block 563, positioning the flat short tube 562 on the handle 560 on the second clamping assembly 550, Then, the second clamping assembly 550 is operated to bring the flat short tube 562 into close contact with the other end of the curved tube 561. Finally, the movable supporting member 540 located below the curved tube 561 is operated to make the movable supporting member 540 elastically upper the curved tube. 561, the clamping position of the handle 560 is completed, and the handle is clamped and fixed by a plurality of positions, so that the handle positioning is stable and firm; and the welding fixture is respectively fixed by the fixed connection block The assembly 520, the first clamping assembly 530, the second clamping assembly 550 and the movable supporting member 540 position, clamp and fix the handle from a plurality of positions, and the positioning is accurate, the precision is high, and the positioning is fast, and the efficiency is effectively improved. At the same time, effectively reduce labor costs.

As shown in FIG. 6, FIG. 8, and FIG. 9, one end of the bottom plate 511 is provided with a groove 513 for mounting a fixed connection block positioning assembly 520, and the fixed connection block positioning assembly 520 includes a vertical support plate 521, The bottom of the vertical support plate 521 is mounted in the recess 513. The top of the vertical support plate 521 is provided with a horizontal mounting plate 522 extending inwardly, and the end of the horizontal mounting plate 522 is provided with a paddle positioning assembly. 523. The horizontal mounting plate 522 includes a horizontal fixing plate 5221 and a horizontal movable plate 5222. The horizontal fixing plate 5221 is fastened to the top of the vertical supporting plate 521, and the horizontal fixing plate 5221 and the horizontal movable plate 5222 are opposite sides. Curved card slots for the snap paddle positioning assembly 523 are provided, respectively, and the horizontal flaps 5222 are fastened to the horizontal mounting plate 522 by fastening the fasteners to the horizontal fixing plate 5221. The paddle positioning assembly 523 includes a rotary paddle assembly 5231, a positioning bar column 5232, a fixed connection block positioning bar 5233, a fixed connection block positioning claw 5234, and a through-rotary paddle assembly 5231. a positioning rod column 5232, a fixed connection block positioning rod 5233, and a top rod 5236 of the fixed connection block positioning claw 5234. The top rod hole 5237 of the fixed connection block positioning rod 5233 is eccentrically disposed, and the bottom of the top rod 5236 The end is provided with a block 5238, and the top of the jack 5236 is fixed to the rotary paddle assembly 5231 by a fastener. The ejector rod 5236 is sleeved with a height adjusting spring 5235, and the height adjusting spring 5235 is located between the fixed connecting block positioning rod 5233 and the rotary paddle assembly 5231. The rotary paddle assembly 5231 includes a positioning rod. The paddle lever 52311 in the column 5232, and the paddle 52312 mounted on the paddle bar 52311, when in use, the paddle pad 52312, the paddle 52312 drives the paddle bar 52311 and the plunger mounted in the paddle lever 52311 5236 rotates together. The vertical support plate 521 is mounted in the recess 513 on the bottom plate 511, and the vertical support plate 521 is fastened to the bottom plate 511 by fasteners, which effectively ensures the firmness and stability of the fixed connection block positioning assembly 520. Sex. The method of using the fixed connection block positioning component 520 manually passes the fixed connection block through the block 5238 at the bottom of the ejector 5236 and then places it in the fixed connection block positioning claw 5234, and then dials the paddle, and the paddle drives the paddle lever. 52311 drives the ejector rod 5236 installed in the ejector rod 52311 to rotate together. When the block 5238 at the bottom of the ejector rod 5236 rotates to extend the fixed connection block positioning rod 5233, the block 5238 engages the fixed connection block with the fixed connection block. The positioning claw 5234 is fixed in the inside to effectively prevent the fixed connection block from falling.

As shown in FIG. 8 , a limiting member is disposed on the inner side of the vertical supporting plate 521 , and the limiting member includes a limiting block 524 and a limiting block mounting block 525 , and the limiting block 524 is installed through the limiting mounting block 25 . The inside of the vertical support plate 521 is used for defining the left and right and upper and lower positions of the handle, and the limiting block 524 is provided with an oblong adjustment hole 526. The limiting block 524 is arranged to press and fasten the arc tube when the arc tube on the handle is clamped to the left and right, thereby effectively ensuring the positioning stability of the arc tube.

As shown in Figures 6, 7 and 10, the first clamping assembly 530 includes a first clamping bracket 531 mounted on a base plate 511, the first clamping bracket 531 including a first mounting plate 532, A first clamping operating handle 533 is mounted on the first mounting plate 532. The first clamping operating handle 533 is coupled to the first clamping block 536 by a first push rod 534, the first clamping block 536. Both sides are connected to the first mounting plate 532 through the first guide post 535. After the fixed connection block is positioned and fixed by the fixed connection block positioning assembly 520, the arc tube is manually sleeved on the fixed connection block, and then the first clamping operation handle 533 is operated, and the first clamping operation handle 533 passes through the first push rod 534. The first clamping block 536 is pushed to move toward the curved tube on the handle, thereby clamping the curved tube.

As shown in FIGS. 6, 7, 11, and 12, the second clamping assembly 550 includes a second clamping frame 551 on the rear side of the bottom plate 511, and the second clamping frame 551 includes a second mounting plate. 552 and clamping push block 553, the second mounting plate 552 is mounted with a second clamping operating handle 555, and the second clamping operating handle 555 is connected to the clamping push block 553 by the second push rod 556. Both sides of the clamping push block 553 are connected to the second mounting plate 552 through the second guide post 557. The clamping push block 553 is provided with a positioning post 559 which is matched with a positioning hole on the handle, and a clamping cover is arranged on the outer side of the clamping push block 553. The clamping cover is in the handle. After being mounted on the positioning post 559, the handle is positioned and fastened by fasteners. After the arc tube is sleeved on the fixed connecting block and clamped and fixed, the positioning hole on the flat short tube is aligned with the positioning post 559 outside the clamping push block 553 and sleeved on the positioning post 559, and then the clamping cover is mounted. The flat short tube is fastened, and the second clamping operation handle 555 is operated. The second clamping operation handle 555 drives the clamping push block 553 through the second push rod 556, and the clamping push block 553 drives the flat short tube and the clip. The tight cover plates are moved together toward the curved tube so that the flat short tube is in close contact with the curved tube. An adjusting screw 58 is disposed between the clamping push block 553 and the second push rod 556, and both ends of the adjusting screw 58 are respectively fixedly positioned by a fastening nut. The setting of the adjusting screw 58 is used to adjust the left and right positions of the clamping push block 553, and the adjusting screw 58 is used in combination with the second clamping operating handle 555 to effectively improve the stroke and adjustment precision of the clamping push block 553.

As shown in FIG. 6, FIG. 7, FIG. 13 and FIG. 14, the movable support member 540 includes a movable block 541, a support spring 543 and a support column 542, and the center of the movable block 541 is provided with a stepped hole 544, the step The large hole of the hole 544 is located at the upper portion for the support column 542 to pass through, and the small hole of the step hole 544 is located at the lower portion for abutting the support spring 543, and the support spring 543 is sleeved with the support column 542, the support The top of the post 542 extends into the large hole through the small hole, and the bottom of the support post 542 abuts in the groove of the support post 542 on the bottom plate 511. The movable support member 540 is configured to always position the curved tube at a certain height during the clamping and positioning of the flat short tube and the curved tube by using the second clamping unit 550, thereby avoiding the inclination of the curved tube and flattening The short tube is difficult to clamp in position, which effectively improves the clamping efficiency of the handle.

Referring to FIGS. 6 and 8, in the first welding, the handle body 530 is first clamped by the first clamping assembly 530, the second clamping assembly 550 clamps the flat short tube 562, and the fixed connection block positioning assembly 520 is positioned. In the fixed connection block 563 of the 560, since the fixed connection block positioning claws 5234 of the fixed connection block positioning assembly 520 block the upper side and the lower side of the fixed connection block 563, welding cannot be performed. In order to solve the technical problem, as shown in FIGS. 15 to 19, the handle pipe joint fixing joint repair welding jig 6 of the present invention includes a repair welding jig bottom plate 61 vertically fixedly mounted on a rotary table, and a repair welding jig bottom plate 61. There is a handle hanger 62 for the handle 560 to be upside down with the nozzle facing outward. The handle hanger 62 is provided with a positioning pin which is arranged to cooperate with the screw hole of the handle 560; and is located on the handle hanger 60 on the repair welding clamp bottom plate 61. a handle positioning block 64 is disposed on the bottom, and the handle positioning block 64 is provided with a positioning groove matching the handle 560; and a push-pull fixing block is disposed on the bottom plate 61 of the repair welding fixture at a position between the handle hanger and the handle positioning block. A push-pull mechanism 63 for elastically pressing the handle 560 toward the repair welding jig bottom plate 61 is provided on the push pin fixing block. When the handle 560 is loaded, the handle 560 is loaded in an inverted state, the flat short tube 562 is hung on the handle hanger 62, and is positioned by the positioning pin, and then the handle body 561 is placed in the positioning groove of the hand positioning block 64, and finally pushed. The clamping mechanism 63 can be locked, and the operation is convenient and quick.

In order to improve the repair welding efficiency, a set of the handle pipe joint fixing block repair welding jig 6 of the present invention can simultaneously load two handles 560, and the handle hanger 62 includes a rack connection vertically fixed on the repair welding jig bottom plate 61. a block 621, a suspension bracket block 622 parallel to the repair welding fixture bottom plate 61 is vertically fixedly connected to the front end of the hanger connecting block 621, and a left positioning pin 623 and a right positioning pin 624 are respectively disposed at the left and right ends of the suspension bracket block 622; The handle positioning block 64 includes a left handle positioning block 641 corresponding to the left positioning pin 623 and a right handle positioning block 642 corresponding to the right positioning pin 624; the push-pull mechanism 63 includes a corresponding to the left positioning pin 623 The left push mechanism 631 and the right push mechanism 632 corresponding to the right positioning pin 624; the left push mechanism 631 and the right push mechanism 632 have the same structure and are disposed in pairs.

The specific structure of the push-pull mechanism 63 includes a push-pull holder 633, and an L-shaped clamp arm 634 is hinged on the push-clamping seat. The L-shaped clamp arm 634 is provided with an elastic pressing head 635, and the L-shaped clamping arm 634 has an upper corner. An L-shaped handle 636 is hinged, and a linkage arm 637 is hinged between the corner of the L-shaped handle 636 and the push-clamping seat 633. When the L-shaped handle 636 is pressed, the elastic pressing head 635 presses the handle 560 under the action of the L-shaped clamping arm 634; when the L-shaped handle 636 is pulled up, the elastic pressing head 635 is raised. For the handle 560 of different specifications, the L-shaped clamping arm 637 is provided with an adjusting groove 6371, and the elastic pressing head 635 is lockedly connected with the adjusting groove 6371 by a locking screw.

The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention in any way; and those skilled in the art can smoothly implement the present invention as shown in the drawings and described above. However, those skilled in the art can make equivalent changes to the changes, modifications and evolutions made by the above-disclosed technical contents without departing from the technical scope of the present invention. At the same time, any changes, modifications and evolutions of any equivalent changes made to the above embodiments in accordance with the essential techniques of the present invention are still within the scope of the technical solutions of the present invention.

Claims

An automatic welding device for handles, characterized in that the device comprises a handle welding rotary table, a handle welding fixture, a handle pipe joint fixing joint repair welding fixture and a welding robot;

The handle welding rotary table comprises a rotating base, and the rotary base plate is connected with a rotary table above the rotary base. The rotary table is divided into four stations, and each of the stations is respectively provided with a set of the handles. Welding fixture

The handle welding fixture includes a clamp base mounted on the rotary table, and one end of the clamp base is provided with a fixed connection block positioning assembly for positioning a fixed connection block, and the fixed connection block positioning assembly is mounted thereon for a limiting member for defining the left and right and upper and lower positions of the handle, the first clamping assembly for clamping one end of the handle is provided at one end of the clamp base adjacent to the fixed connecting block positioning assembly, and the other end of the clamping base is provided for clamping the other end of the handle a second clamping assembly, the clamp base is provided with at least one set of movable support members for elastically lifting the handle;

The handle pipe joint fixing block repair welding jig includes a repair welding jig bottom plate vertically fixedly mounted on the rotating table plate, and a handle hanger frame for the handle to be upside down with the pipe mouth facing outward is provided on the bottom plate of the repair welding jig, the handle a positioning pin disposed in cooperation with the screw hole of the handle is disposed on the pylon; a handle positioning block is disposed under the handle pylon on the bottom plate of the repair welding fixture, and a positioning groove matching the handle is disposed on the handle positioning block; a push clamp fixing block is disposed on the bottom plate of the clamp between the handle hanger and the handle positioning block, and a push clamp mechanism for elastically pressing the handle toward the repair welding clamp bottom plate is disposed on the push clamp fixing block;

The welding robot includes a mechanical arm disposed at one side of the handle welding rotary table, and a mechanical arm disposed on the mechanical arm for welding the handle of the handle welding fixture and the handle pipe joint fixing block repair welding fixture. Welding torch.
The automatic welding device for handle according to claim 1, wherein the rotating base of the handle welding rotary table is provided with a station sensor assembly; the station sensor assembly is provided with four in sequence from the inside to the outside. The station sensing sensor is provided with a station sensing hole corresponding to each of the four station sensing sensors, and the four station sensing holes are sequentially shifted by 90 degrees on the rotating table.
The automatic welding device for a handle according to claim 1, wherein said rotary drive mechanism comprises an indexing mechanism for connecting a rotating base and a rotating platen, and an indexing motor for driving the indexing mechanism; said station sensing The sensor assembly includes a sensor mount including a vertical mounting plate and a horizontal mounting plate at the top of the vertical mounting plate, the vertical mounting plate being provided for mounting the sensor mount on the indexing A mounting hole on the mechanism housing, the horizontal mounting plate is provided with a sensor mounting hole for mounting four station sensing sensors, and the sensor is mounted on the sensor holder by a fastener.
The handle automatic welding apparatus according to claim 1, wherein said clamp base comprises a horizontally disposed bottom plate and a vertical baffle on a rear side of said bottom plate, said bottom plate and said vertical baffle being integrally formed a structure or a split structure; one end of the bottom plate is provided with a groove for mounting a fixed connection block positioning assembly, the fixed connection block positioning assembly comprises a vertical support plate, and the bottom of the vertical support plate is installed in the groove The inner side of the vertical support plate is provided with a limiting member, and the top of the vertical supporting plate is provided with a horizontal mounting plate extending inwardly, and the end of the horizontal mounting plate is provided with a paddle positioning assembly.
The automatic welding device for handle according to claim 4, wherein the paddle positioning assembly comprises a paddle assembly, a positioning bar column, a fixed connection block positioning rod, and a fixed connection block positioning card arranged in order from top to bottom. a claw, and a through paddle assembly, a positioning rod column, a fixed connection block positioning rod, and a top rod of the fixed connection block positioning claw, wherein the top rod hole on the fixed connection block positioning rod is eccentrically disposed, and the bottom of the top rod The end is provided with a block, and the top of the jack is fixed to the rotary pad by a fastener.
The handle automatic welding apparatus according to claim 1, wherein said first clamping assembly comprises a first clamping bracket mounted on a bottom plate, said first clamping bracket comprising a first mounting plate, a first clamping operation handle is mounted on the first mounting plate, and the first clamping operation handle is connected to the first clamping block by a first pushing rod, and the first guiding block passes through the first guiding The column is connected to the first mounting plate.
The handle automatic welding apparatus according to claim 1, wherein said second clamping assembly comprises a second clamping frame on a rear side of the bottom plate, and said second clamping frame comprises a second mounting plate and a clamp. a second clamping operation handle is mounted on the second mounting plate, and the second clamping operation handle is connected to the clamping push block by a second push rod, and both sides of the clamping push block pass The second guide post is coupled to the second mounting plate.
The automatic welding device for a handle according to claim 7, wherein the side of the clamping push block that is in contact with the handle is provided with a positioning post that cooperates with a positioning hole on the handle, and the outer side of the clamping push block a clamping cover is further disposed, the clamping cover is positioned and fastened by a fastener after the handle is mounted on the positioning post; an adjusting screw is disposed between the clamping push block and the second push rod, The two ends of the adjusting screw are respectively fixed by a fastening nut; the movable supporting member comprises a movable block, a supporting spring and a supporting column, and a center of the movable block is provided with a stepped hole, and a large hole of the stepped hole is located at an upper portion, A support post is passed through, the small hole of the step hole is located at a lower portion for abutting the support spring, the support spring sleeve is provided with a support column, and the top of the support column extends through the small hole into the large hole, The bottom of the support column abuts in a support post groove on the bottom plate.
The handle automatic welding device according to claim 1, wherein the handle hanger comprises a hanger connection block vertically fixed on the bottom plate of the repair welding fixture, and the front end of the hanger connection block is vertically fixedly connected with a suspension bracket block parallel to the bottom plate of the welding fixture, and a left positioning pin and a right positioning pin respectively disposed at the left and right ends of the suspension bracket block; the handle positioning block includes a left handle positioning block corresponding to the left positioning pin and the right a right handle positioning block corresponding to the positioning pin; the push pin mechanism includes a left push pin mechanism corresponding to the left positioning pin and a right push pin mechanism corresponding to the right positioning pin.
The automatic welding device for handle according to claim 1, wherein the push-push mechanism comprises a push-pull seat, an L-shaped clamp arm is hinged on the push-clamping seat, and an elastic pressing head is arranged on the L-shaped clamp arm. An L-shaped handle is hinged at an upper corner of the L-shaped clamp arm, and a linkage arm is hinged between the corner of the L-shaped handle and the push-clamping seat; the L-shaped clamp arm is provided with an adjustment groove, and the elastic compression head passes the lock The tightening screw is connected to the adjusting groove.