CN110654033B

CN110654033B - Four-station rotating disc type hot riveting welding machine and welding method thereof

Info

Publication number: CN110654033B
Application number: CN201910935332.1A
Authority: CN
Inventors: 俞瑞富; 邱春辉; 谢大智; 周灵星; 黄卫虎
Original assignee: Mingguang Leadtop Intelligent Technology Co ltd
Current assignee: Mingguang Leadtop Intelligent Technology Co ltd
Priority date: 2019-09-29
Filing date: 2019-09-29
Publication date: 2021-04-09
Anticipated expiration: 2039-09-29
Also published as: CN110654033A

Abstract

The invention belongs to the technical field of automobile part machining, and particularly relates to a four-station rotating disc type hot rivet welding machine and a welding method thereof. The hot riveting welding machine comprises a frame, wherein a turntable assembly and a hot riveting pressing assembly are arranged at the frame, and the hot riveting welding machine also comprises a two-dimensional code scanning assembly which is arranged at a two-dimensional code scanning station and used for scanning a code of an airbag cover, and a visual detection assembly which is arranged at a shooting station and used for shooting to obtain an airbag cover picture so as to facilitate system comparison. The hot riveting welding machine can realize the automatic welding operation of the department mark of the airbag cover and the department mark ring, has the advantages of low operation threshold and time and labor saving in the welding process, and can effectively ensure the welding quality of the department mark and the department mark ring. The welding method comprises the following steps: 1) and a pre-working procedure; 2) and a code scanning procedure; 3) hot riveting; 4) shooting and blanking processes, thereby systematically improving the actual processing efficiency of the welding process.

Description

Four-station rotating disc type hot riveting welding machine and welding method thereof

Technical Field

The invention belongs to the technical field of automobile part processing, and particularly relates to a four-station rotating disc type hot-riveting welding machine and a welding method thereof, wherein the four-station rotating disc type hot-riveting welding machine is applied to the mark and mark ring welding at the cover of an air bag.

Background

In the field of automobile part processing, particularly in the assembly of automobile airbag covers, welding treatment of the airbag covers is often required. Taking the welding process of the logo and the logo ring at the airbag cover as an example, the shapes of the logo and the logo ring are shown in fig. 1-2, the installation position of the logo and the logo ring relative to the airbag cover is shown in fig. 3, the logo and the logo ring are deeply arranged in the airbag cover, the traditional welding method adopts a manual operation mode to carry out welding, and the welding means adopts a handheld hot riveting gun to directly press down so as to carry out welding treatment. The dependence of the manual welding mode on operators is very high, the operation efficiency is difficult to guarantee, and meanwhile, the operators also need higher professional literacy. The professional literacy of operators is slightly poor, the welding heads are slightly improper to operate, the surfaces of welded finished products are easily uneven, and even the problems of overburning, penetration welding, desoldering, insufficient welding and the like are generated, so that the actual performance of the airbag cover is influenced.

Disclosure of Invention

One of the purposes of the invention is to overcome the defects of the prior art and provide a four-station turntable type hot riveting welding machine with a reasonable structure, the hot riveting welding machine can realize automatic welding operation of the logo and the logo ring at the airbag cover, and has the advantages of low operation threshold and time and labor saving in the welding process, and the welding quality of the logo and the logo ring can be effectively ensured. The invention also aims to provide a welding method using the four-station rotating disc type hot rivet welding machine, so that the actual processing efficiency of the welding process is improved systematically.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a quadruplex position carousel formula rivet hot welding machine which characterized in that: this hot rivet welding machine includes the frame, and frame department sets up carousel subassembly and hot riveting pressure subassembly, wherein:

the appearance of the rack is in a square frame shape, three horizontal plate surfaces are arranged in the rack according to the upper part, the middle part and the lower part, the bottom plate surface forms an installation layer for placing a system control box, the middle layer plate surface forms a working table surface for placing a turntable assembly and a hot riveting assembly, and the top plate surface forms an observation layer for placing a two-dimensional code printing mechanism and an indicator lamp;

the rotary table component comprises a rotary table which is in rotary fit with the working table surface, four groups of profiling positioning tools are uniformly distributed on the upper disc surface of the rotary table in the circumferential direction, and a rotary pressing cylinder is arranged beside each profiling positioning tool, so that the airbag cover is clamped in a coordinated manner through the downward pressing action of the rotary pressing cylinder on the airbag cover and the supporting action of a tire membrane of the profiling positioning tool on the airbag cover; a rotating shaft of the rotary disc vertically extends downwards and forms power fit with an output shaft of the four-station cam divider, and an input shaft of the four-station cam divider is fixedly connected to an output shaft of the power motor through a reduction gearbox; in the circumferential direction of the rotary disc, four groups of profiling positioning tools sequentially form a feeding and discharging station, a two-dimensional code scanning station, a hot riveting station and a shooting station; the hot riveting assembly is positioned at a hot riveting station and comprises a hot riveting head used for performing direct hot riveting operation on the logo or logo ring from top to bottom, and the bottom surface of the hot riveting head forms a riveting surface and vertically points downwards to the position where the logo or logo ring is positioned; the hot rivet head is driven by a vertical lifting mechanism fixed on the working table surface to generate vertical lifting action of lead;

the hot riveting welding machine further comprises a two-dimensional code scanning assembly arranged at the two-dimensional code scanning station and used for scanning the airbag cover, and a visual detection assembly arranged at the shooting station and used for shooting to obtain the image of the airbag cover so as to facilitate system comparison.

Preferably, the appearance of the hot riveting head is in a straight column shape; elastic telescopic compression bars are arranged along the axis of the hot rivet head in an axisymmetric manner, and the axes of the two groups of elastic telescopic compression bars are arranged vertically; the horizontal height of the elastic telescopic end of the elastic telescopic pressing rod in the initial state is lower than the height of the bottom end face of the hot riveting head, and the horizontal height of the elastic telescopic end of the elastic telescopic pressing rod in the maximum shrinkage is higher than the height of the bottom end face of the hot riveting head.

Preferably, the vertical lifting mechanism comprises a fixed frame fixed on the frame, and two ends of a ball fixed screw rod with a vertical axis are rotatably matched on the frame through bearing seats; the top end of the ball fixed screw is in power connection with the driving motor through a coupler, and a sliding plate is in threaded fit with the rod body of the ball fixed screw; the surface of the sliding plate is horizontally arranged, and guide holes are arranged on two sides of the sliding plate, so that a hole-shaft plug-in type guide fit relation is formed between the sliding plate and guide rods symmetrically arranged on two sides of the axis of the ball fixing screw rod, and two ends of each guide rod are fixedly connected and matched with the fixing frame; the top end of the hot rivet head and the bottom seat end of the elastic telescopic pressure bar are fixed at the end face of the bottom of the sliding plate.

Preferably, a vertical aligning rod extends vertically downwards from the sliding plate, and a aligning hole for the vertical aligning rod to penetrate from top to bottom is correspondingly formed in the profiling positioning tool; the action of the vertical guide mechanism enables the vertical guide rod to have two positions of a high position and a low position: when the plumb guide rod is in a high state, the plumb guide rod and the action path of the turntable assembly are spatially avoided; when the vertical correcting rod is in a low position state, a hole-shaft plug-in type guiding matching relation is formed between the vertical correcting rod and the correcting hole; the horizontal height of the bottom end surface of the vertical guide rod is lower than that of the elastic telescopic end of the elastic telescopic pressure rod in an initial state.

Preferably, flanges are horizontally and oppositely extended from two opposite sides of the bottom surface of the four groups of profiling positioning tools, and a group of pilot holes are correspondingly arranged on the two groups of flanges one by one; the assembling holes are further arranged at the two groups of flanging positions, and the fixing screws penetrate through the assembling holes to fixedly connect the detachable threads of the profiling positioning tool to the upper disc surface of the rotary disc.

Preferably, the lower disc surface of the rotary disc is matched with the working table surface of the frame in a rotary mode through a coaxial plane bearing; and a sensor for monitoring the number of rotation turns of the output shaft of the four-station cam divider is arranged at the frame.

Preferably, rotatory compressing cylinder includes power cylinder, rubber pressure head and connects the horizontal connecting rod of power cylinder output shaft and rubber pressure head, horizontal connecting rod includes the second connecting rod of direct rigid coupling in the first connecting rod of power cylinder output shaft department and direct rigid coupling rubber pressure head, and the vertical running through of first connecting rod sets up waist type regulation hole, and the vertical running through of second connecting rod department sets up waist type mounting hole, the parallel first connecting rod length direction of waist type regulation hole pass length direction, and the parallel second connecting rod length direction of pass length direction of waist type mounting hole, the plumbous vertical waist type mounting hole of passing of adjusting screw constitutes screw thread rigid coupling cooperation relation with adjusting nut after adjusting the hole with waist type.

Preferably, the two-dimensional code scanning assembly comprises a first support fixed on a rack beside the two-dimensional code scanning process, the first support comprises a first cross rod, one end of the first cross rod is fixed at a first vertical rod through a group of cross fixing seats so as to realize the vertical Y-axis adjusting function of the first cross rod, and the bottom end of the first vertical rod is installed on a workbench surface of the rack through a first installation seat; the other end of the first cross rod is fixed on the second vertical rod through another group of cross fixing seats, and the bottom end of the second vertical rod is fixedly connected with the code scanning instrument so as to realize the horizontal X-axis adjustment purpose of the code scanning instrument.

Preferably, the visual detection assembly comprises a second support fixed on the rack beside the shooting procedure, the second support comprises a second cross rod, one end of the second cross rod is fixed at a third vertical rod through a group of cross fixing seats so as to realize the vertical Y-axis adjusting function of the second cross rod, and the bottom end of the third vertical rod is installed on the working table surface of the rack through a second installation seat; the horizontal sliding block is sleeved at the other end of the second cross rod and forms a fastening screw type fixed connection matching relationship with the second cross rod, and the horizontal sliding block is fixedly connected with the shooting device; the shooting device comprises a right-angle groove-shaped fixed groove plate which is directly and fixedly connected to one side of the horizontal sliding block, wherein the opening of the horizontal sliding block faces to one side, the upper groove wall of the fixed groove plate is fixedly connected with a camera, a camera lens faces downwards, and an avoidance hole which avoids a shooting path of the camera is vertically arranged at the lower groove wall of the fixed groove plate in a penetrating mode; and a light source for irradiating the airbag cover at the shooting process is arranged at the lower hole end of the avoidance hole.

Preferably, the welding method using the four-station rotating disc type hot rivet welding machine is characterized by comprising the following steps of:

1) and a pre-process:

starting a power supply button, and confirming the type of the airbag cover to be produced so as to call a corresponding product program from the system; then, for the current type of the airbag cover, the manual replacement operation of the four copying fixing tools is carried out adaptively; the hot riveting head is started for preheating, and the temperature of the hot riveting head is controlled to reach a required state through the system; manually checking whether the surfaces of the airbag cover and the logo or the logo ring have defects, and if the surfaces have defects, placing the airbag cover and the logo or the logo ring into a bad area; then, taking out the two-dimensional code from the two-dimensional code printing mechanism, attaching the two-dimensional code to a defect-free airbag cover which is manually checked, and placing the airbag cover attached with the two-dimensional code on a tire membrane surface of a profiling positioning tool at a feeding and discharging station;

2) and a code scanning procedure:

starting a feeding and discharging station, rotating a pressing cylinder to act and pressing an airbag cover; the power motor drives the four-station cam divider to rotate through the reduction gearbox, and then the rotary disc is rotated, so that the airbag cover after being scanned to the two-dimensional code scanning station is rotated; the two-dimensional code scanning assembly works and reads the two-dimensional code;

3) hot riveting;

the power motor drives the four-station cam divider to rotate through the reduction gearbox, and then the rotary disc is rotated, so that the airbag cover after being scanned is rotated to the hot riveting station; the vertical lifting mechanism drives the hot riveting head to descend to a set position and stop; the hot riveting operation of the hot riveting head relative to the riveting column at the position of the logo or the logo ring is started, and after a set time, the hot riveting head is lifted and reset under the driving of the vertical lifting mechanism to complete the hot riveting operation of the riveting column at the position of the logo or the logo ring;

4) shooting and blanking;

the power motor drives the four-station cam divider to rotate through the reduction gearbox, and then the rotary disc is rotated, so that the riveted airbag cover rotates to a shooting station; the visual detection component starts to take a picture, transmits the picture taking information to the system, compares the picture taking information with a qualified picture prestored in the system, and displays an output result by an indicator light; then, the rotary disc is driven by the four-station cam divider again to rotate to a feeding and discharging station again, the rotary pressing cylinder is opened at the moment, a feeding worker takes off the airbag cover and visually observes the indicator light, and when the indicator light is green, the product is qualified and is placed in a qualified area; when the indicator light is red, the defective product is obtained, and the defective area is placed.

The invention has the beneficial effects that:

1) through the structure, on one hand, the four-station cam divider is used as a control end, so that the purpose of controllable action of four groups of profiling positioning tools on the rotary disc is achieved, and the sequential connection of the feeding and discharging station, the two-dimension code scanning station, the hot riveting station and the shooting station is further achieved. On the other hand, the hot riveting assembly is arranged at the hot riveting station, so that the aims of automatic hot melting and reliable riveting of the logo or the logo ring at the airbag cover are fulfilled. Once the logo or the logo ring is installed on the airbag cover and rotates to the hot riveting station, the rivet columns at the logo and the logo ring gradually reach a molten state due to the heat energy of the hot riveting head, then cooling, crystallization and shaping are realized through the pressing action of the hot riveting head, and then shooting and resetting blanking operations are completed. Although the whole process is still semi-automatic, the hot riveting operation which is used as a main body and has the highest requirement on the operation threshold completely runs by means of mechanical full-automatic operation, the operation threshold of the device can be obviously reduced, and the welding process is more time-saving and labor-saving. And because the hot riveting head is furthest away from the loading and unloading station where the worker is located during welding, the worker is obviously not damaged, and meanwhile, the welding quality of the logo and the logo ring can be effectively ensured, thereby achieving multiple purposes.

2) The elastic telescopic pressing rods are arranged on two sides of the hot riveting head, so that the purposes of avoiding the hot riveting head from directly impacting a riveting column after hot melting and pressing down to position the airbag cover are achieved through the buffering and pressing functions of the elastic telescopic pressing rods. In actual operation, the arrangement of the elastic telescopic end of the elastic telescopic pressing rod into a thread rotating structure can be even considered, so that the length adjustability of the elastic telescopic pressing rod in the initial state is realized, and the safety airbag covers of different models can be further adjusted.

3) For the vertical lifting mechanism, various realization structures can be provided, such as a mode of adopting a cylinder jacking mechanism and even adopting a slider-crank mechanism and the like. The invention preferably adopts a threaded screw rod structure, thereby ensuring the action accuracy of the hot riveting head by utilizing the high action stability and accuracy of the threaded screw rod structure and finally ensuring the finished product quality of the product.

4) Two groups of elastic telescopic pressure rods are arranged on two sides of the hot riveting head, and a pair of vertical guide rods are arranged outside the two groups of elastic telescopic pressure rods. Therefore, on one hand, the profiling positioning tool can be arranged to be a detachable structure, and when the tool is replaced and installed, the accurate positioning and installing functions of the online profiling positioning tool can be achieved through the vertical guide rod. On the other hand, the hot riveting head needs to go deep into the deep cavity of the airbag cover to perform riveting operation of the logo and the rivet column of the logo ring, so that the accuracy of the action of the hot riveting head is very important when the pressing action is generated. Through the penetrating guiding function of the vertical guide rod relative to the guide hole, when the hot riveting head is pressed down at every time and the elastic telescopic pressure rod is not in contact with the airbag cover on the profiling positioning tool, the vertical guide rod penetrates into the guide hole in advance, so that the early action guiding operation or even the error correcting operation of the hot riveting head is realized, and multiple purposes are achieved.

5) The invention designs a flanging structure for realizing the detachable function of the profiling positioning tool, so that the flanging has the functions of guiding and detachable assembly by arranging the guiding hole or even the assembly hole at the flanging position, and the use is very convenient. Through the setting of pilot hole for on four groups of same profile modeling location frocks can be detachably fixed in the gyration dish, so that the actual change.

6) The sensor is arranged, and the purpose is that the rotation number of turns of the output shaft of the four-station cam divider is monitored, so that the function of monitoring the rotation angle of the rotation disc at each time is realized, and the action reliability of each station is ensured.

7) Further, as for the rotary pressing cylinder, since the power cylinder portion is fixed at the work table of the frame, the type of the airbag cover is different. In view of the above, the horizontal connecting rod of the rotary compressing cylinder is designed into a double-connecting-rod thread fixing structure with adjustable length and angle, so that the rotary compressing cylinder is suitable for air bag covers of different sizes and models through adjustment, and is very flexible and convenient to use.

8) The two-dimensional code scanning assembly is used for scanning the airbag cover at the two-dimensional code scanning station. And the visual detection assembly is used for realizing the online photographing function of the airbag cover welded with the logo or the logo ring at the photographing station, so that photographing information is transferred to the background system and is compared with a standard photo at the background system, and the purpose of online screening of good products and defective products is further realized. The background comparison is a conventional process for automatically comparing good and defective products in the existing production line, and is not described herein again.

Drawings

FIG. 1 is a schematic perspective view of a logo;

FIG. 2 is a schematic perspective view of a scale ring;

FIG. 3 is a view of the mounting location of the logo and logo ring within the airbag cover;

FIG. 4 is a schematic perspective view of the present invention;

FIG. 5 is a position state diagram of the turntable assembly and the hot riveting assembly;

FIG. 6 is a perspective view of the turntable assembly;

FIG. 7 is a perspective view of a hot riveting assembly;

FIG. 8 is a left side view of FIG. 7;

FIG. 9 is a front view of FIG. 7;

FIG. 10 is a perspective view of a rotary hold-down cylinder;

fig. 11 is a schematic perspective view of a two-dimensional code scanning assembly;

fig. 12 is a schematic perspective view of the visual inspection assembly.

The actual correspondence between each label and the part name of the invention is as follows:

a-airbag cover b-logo c-logo ring

10-frame 11-working table

20-turntable assembly 21-turntable

22-profiling positioning tool 22 a-flanging 22 b-pilot hole

23-Rotary compacting Cylinder

23 a-power cylinder 23 b-first connecting rod 23 c-second connecting rod 23 d-rubber ram

24-reduction gearbox 25-power motor

30-hot riveting assembly 31-hot riveting head 31 a-heating rod

32-elastic telescopic pressure bar 33-plumb guide rod

40-two-dimensional code printing mechanism

51-fixed frame 52-ball fixed screw 53-coupling 54-driving motor

55-slide 56-guide bar

60-first support

61-second vertical rod 62-first cross rod 63-first vertical rod 64-first mounting seat

70-second support

71-second cross bar 72-third vertical bar 73-horizontal sliding block 74-second mounting seat

80-camera 81-fixed groove plate 82-camera 83-light source

90-code scanner

Detailed Description

For ease of understanding, the specific construction and operation of the present invention is further described herein with reference to FIGS. 1-12:

to facilitate understanding of the present invention, the following description will be made first of all on the structures of the index b, the index ring c, and the airbag cover a: fig. 1 is a schematic perspective view of a scale b, and fig. 2 is a schematic perspective view of a scale ring c. In actual hot-riveting installation, the structures shown in fig. 1 and 2 and fig. 3 are installed in a hole groove preset in an airbag cover a and are fixed by hot-riveting so as to form an integrated structure.

On the basis of the above prior structure, the specific structure of the present invention is shown in fig. 4-12, and the main structure thereof includes a frame 10 with a work table 11, a turntable assembly 20 is disposed at the frame 10, and a hot riveting assembly 30 is disposed beside the turntable assembly 20, wherein:

the shape of the frame 10 is a square frame, three layers of plates are arranged in the frame 10 according to the upper, middle and lower directions as shown in fig. 4-5, the bottom layer forms an installation layer for placing components such as a system control box, the middle layer forms a working table 11 for placing the turntable assembly 20 and the hot riveting assembly 30, and the top layer forms an observation layer for placing components such as the two-dimensional code printing mechanism 40 and the indicator light. The detailed description of each component at the middle layer level is mainly given here, and the components such as the system control box, the two-dimensional code printing mechanism 40, the indicator light and the like all belong to conventional electronic accessories, and therefore the detailed description is not given.

The structure of the turntable assembly 20 is shown in fig. 4-6, and includes a rotary disk 21, a plane bearing, a four-position cam divider, a reduction box 24 and a power motor 25, which are arranged in sequence from top to bottom along a vertical direction. The power of the power motor 25 is transmitted to the four-position cam divider after being decelerated by the reduction box 24, and then the power of the four-position cam divider is output to the rotary disc 21 to generate four-position rotary motion. In consideration of the normal operation of each power component on the rotary disk 21, it is also considered to arrange electrical connection and sensing monitoring components such as an electrical and pneumatic rotary slip ring, a sensor, etc. at the rotating shaft of the rotary disk 21 in practical use. The sensor calculates the rotation times of the output shaft of the four-station cam divider, so that the position of the corresponding profiling positioning tool on the rotary disc 21 is determined. The flat bearing then serves as a support when the hot riveting assembly 40 is pressed down at the hot riveting station. The profiling positioning tool 22 is a finished product structure which is used in the injection molding industry, and is detachably mounted on the rotary disc 21 to form a quick-change tire mold tool; this makes when producing different specification air bag cover a, the quick replacement demand of profile modeling location frock 22 can be realized to the quick assembly disassembly of the mounting hole department set screw of turn-ups.

It is even conceivable for the rotary compacting cylinder 23 as a compacting assembly to arrange its connecting rods in a length-adjustable configuration as shown in fig. 6. As shown in fig. 10, the waist-shaped adjusting holes at the first connecting rod 23b and the waist-shaped mounting holes at the second connecting rod 23c are matched with each other, and the horizontal connecting rods can be adjusted to a proper length and angle when aiming at airbag covers a with different specifications by matching with the adjusting screws and the adjusting nuts, so that the airbag covers a can be conveniently pressed at any time.

The hot riveting assembly 30 is formed by matching a vertical lifting mechanism with a hot riveting head 31. As shown in fig. 7 to 9, the vertical lifting mechanism includes a fixing frame 51 formed by combining structures such as a bottom plate, a supporting plate, a reinforcing rib, a base and the like, and the fixing frame 51 is arranged on the work table 11 beside the disc surface of the rotary disc 21. Both ends of a ball fixing screw 52 with a vertical axis are rotatably matched on the frame 10 through bearing seats, the top end of the ball fixing screw 52 is in power connection with a driving motor 54 through a coupling 53, and a slide plate 55 is in threaded fit at the shaft of the ball fixing screw 52. The surface of the sliding plate 55 is horizontally arranged, and the two sides of the sliding plate 55 are provided with guide holes, so that a hole-shaft plug-in type guide matching relation is formed between the guide rods 56 which are symmetrically arranged on the two sides of the axis of the ball fixed screw 52, and the two ends of each guide rod 56 are fixedly connected and matched with the fixed frame 51. The driving motor 54 drives the hot rivet head 31 to descend to the set position through the ball fixing screw 52 and stop descending. For airbag covers a of different specifications, the descending positions of the hot riveting heads 31 are different, the hot riveting time of the hot riveting heads 31 is also different, and corresponding programs need to be called in the system. The drive motor 54 must be such that the displacement and torque are within the set range to properly position the rivet head 31. When the hot riveting head 31 descends, and one or both of the torque of the driving motor 54 and the displacement generated by the driving sliding plate 55 meet or do not meet the requirements, the yellow light alarm can be given, and the driving motor 54 drives the hot riveting head 31 to return to the initial position through the ball fixing screw 52 and needs manual processing. The working surface of the hot rivet head 31 is treated with teflon to prevent stringing after riveting. As can be seen in fig. 8, the hot rivet head 31 itself is a square column structure, and a heat source generator such as a heating rod 31a is fixed at the rear side for the purpose of on-line heating of the hot rivet head 31.

When the driving motor 54 drives the hot rivet head 31 to descend to the set position through the ball fixing screw 52, the two vertical aligning rods 33 shown in fig. 5-6 firstly align the aligning hole 22b, so as to initially achieve the purpose of reliably aligning the hot rivet head 31. Then, as shown in fig. 7-9, the elastic telescopic ends of the two elastic telescopic pressing rods 32 press the airbag cover a left and right first, and then the hot riveting head 31 slowly descends, and the purposes of hot melting and pressure riveting of the riveting columns are achieved successively. The rivet column is maintained under pressure for a period of time after being riveted and formed, and is gradually cooled and solidified and formed along with the reduction of temperature, so that the airbag cover a is fixedly connected with the logo b or the logo ring c, and then the driving motor 54 drives the hot rivet head 31 to return to the initial position through the ball fixing screw 52.

As shown in fig. 12, the visual inspection assembly includes a second support 70 fixed on the frame 10 beside the shooting process, the second support 70 includes a second cross rod 71, one end of the second cross rod 71 is fixed on the third vertical rod 72 through a set of cross fixing seats to realize the vertical Y-axis adjustment function of the second cross rod 71, and the bottom end of the third vertical rod 72 is installed on the working table 11 of the frame 10 through a second installation seat 74. The horizontal sliding block 73 is sleeved on the other end of the second cross bar 71 and forms a set screw type fixed connection matching relationship with the second cross bar 71, and the horizontal sliding block 73 is fixedly connected with the shooting device 80. The shooting device 80 comprises a right-angle groove-shaped fixed groove plate 81 which is directly and fixedly connected to the horizontal sliding block 73 and has an opening facing one side, an upper groove wall of the fixed groove plate 81 is fixedly connected with a camera 82, a lens of the camera 82 faces downwards, and an avoiding hole which avoids a shooting path of the camera 82 is vertically arranged at a lower groove wall of the fixed groove plate 81 in a penetrating mode. The lower hole end of the escape hole is provided with a light source 83 for irradiating the airbag cover a at the photographing process. The shooting device 80 shoots to obtain a product picture, and the system screens out defective products by comparison by using the standard products after hot riveting as templates.

As shown in fig. 11, the two-dimensional code scanning assembly includes a first bracket 60 fixed to the rack 10 beside the two-dimensional code scanning process. The first support 60 includes a first cross bar 62, one end of the first cross bar 62 is fixed to a first vertical bar 63 through a set of cross fixing seats to realize the vertical Y-axis adjusting function of the first cross bar 62, and the bottom end of the first vertical bar 63 is installed on the working table 11 of the rack 10 through a first installation seat 64. The other end of the first cross rod 62 is fixed on the second vertical rod 61 through another set of cross fixing seats, and the bottom end of the second vertical rod 61 is fixedly connected with the code scanning instrument 90, so that the horizontal X-axis adjustment purpose of the code scanning instrument 90 is realized. The two-dimensional code scanning assembly is designed to scan codes of all loaded airbag covers a through the code scanner 90.

The method comprises the following steps in actual operation:

1) and a pre-process:

and starting a power supply button to confirm the type of the airbag cover to be produced so as to call the corresponding product program from the system. Then, for the current type of the airbag cover, the manual replacement operation of the four copying fixing tools and the adjustment operation of the rotating pressing cylinder 23 are adaptively performed. And (3) starting the hot rivet head 31 for preheating, and controlling the temperature of the hot rivet head 31 to be in a stable state through a system so as to meet the requirements of the welding process. And manually checking whether the surfaces of the airbag cover and the logo or the logo ring have defects, and if the surfaces have the defects, placing the airbag cover and the logo or the logo ring into a defective area. And then, taking out the two-dimensional code from the two-dimensional code printing mechanism 40, attaching the two-dimensional code to the airbag cover, and placing the airbag cover with the two-dimensional code on the tire surface of the profiling positioning tool 22 at the feeding and discharging station.

2) And a code scanning procedure:

the loading and unloading station is started, and the rotary pressing cylinder 23 acts and presses the airbag cover. The power motor 25 drives the four-station cam divider to rotate through the reduction gearbox 24, and then the rotary disc 21 is rotated, so that the airbag cover after being scanned to the two-dimensional code scanning station is rotated. And the two-dimensional code scanning assembly works and performs two-dimensional code reading operation.

3) And hot riveting:

the power motor 25 drives the four-station cam divider to rotate through the reduction gearbox 24, and then the rotary disc 21 is rotated, so that the airbag cover after being scanned is rotated to the hot riveting station. The vertical lifting mechanism drives the hot rivet head 31 to descend to a set position and stop; the hot riveting head 31 starts to work and rivets the riveting columns, and then the hot riveting head 31 is reset under the driving of the vertical lifting mechanism, so that the integrated operation of hot melting and riveting of the riveting columns at the position of the logo or the logo ring is completed.

4) And an imaging process:

the power motor 25 drives the four-station cam divider to rotate through the reduction gearbox 24, and then the rotary disc 21 is rotated, so that the riveted airbag cover rotates to a shooting station. The visual detection assembly starts to take a picture, transmits the picture taking information to the system, compares the picture taking information with a qualified picture prestored in the system, and displays an output result by an indicator lamp.

5) Blanking:

the rotary disc 21 is returned to the feeding and discharging station under the driving of the four-station cam divider again, the rotary pressing cylinder 23 is opened at the moment, and a feeding person takes down the airbag cover. Visual indicator lamps, namely qualified products when the indicator lamps are green, and placing the qualified products into a qualified area; when the indicator light is red, the defective product is obtained, and the defective area is placed.

Claims

1. The utility model provides a quadruplex position carousel formula rivet hot welding machine which characterized in that: this hot rivet welding machine includes frame (10), and frame (10) department sets up carousel subassembly (20) and hot riveting pressure subassembly (30), wherein:

the appearance of the rack (10) is in a square frame shape, three horizontal plate surfaces are arranged in the rack (10) according to the upper part, the middle part and the lower part, the bottom plate surface forms an installation layer for placing a system control box, the middle layer plate surface forms a working table surface (11) for placing a turntable assembly (20) and a hot riveting assembly (30), and the top plate surface forms an observation layer for placing a two-dimensional code printing mechanism (40) and an indicator light;

the rotary table component (20) comprises a rotary table (21) which is in rotary fit with the working table surface (11), four groups of profiling positioning tools (22) are uniformly distributed on the upper disc surface of the rotary table (21) in the circumferential direction, and a rotary pressing cylinder (23) is arranged beside each group of profiling positioning tools (22) so as to cooperatively clamp the airbag cover through the downward pressing action of the rotary pressing cylinder (23) on the airbag cover and the supporting action of a tire membrane of each profiling positioning tool (22) facing the airbag cover; a rotating shaft of the rotary disc (21) vertically extends downwards and forms power fit with an output shaft of the four-station cam divider, and an input shaft of the four-station cam divider is fixedly connected to an output shaft of a power motor (25) through a reduction gearbox (24); in the circumferential direction of the rotary disc (21), four groups of profiling positioning tools (22) sequentially form a feeding and discharging station, a two-dimensional code scanning station, a hot riveting station and a shooting station; the hot riveting assembly (30) is positioned at a hot riveting station, the hot riveting assembly (30) comprises a hot riveting head (31) used for performing direct hot riveting operation on the logo or logo ring from top to bottom, and the bottom surface of the hot riveting head (31) forms a riveting surface and vertically points downwards to the position where the logo or logo ring is positioned; the hot rivet head (31) is driven by a vertical lifting mechanism fixed on the worktable surface (11) to generate vertical lifting action of lead;

the hot riveting welding machine also comprises a two-dimensional code scanning assembly arranged at the two-dimensional code scanning station and used for scanning the code of the airbag cover, and a visual detection assembly arranged at the shooting station and used for shooting to obtain the image of the airbag cover so as to facilitate system comparison;

the rotary compaction cylinder (23) comprises a power cylinder (23a), a rubber pressure head (23d) and a horizontal connecting rod for connecting an output shaft of the power cylinder (23a) and the rubber pressure head (23d), the horizontal connecting rod comprises a first connecting rod (23b) directly and fixedly connected with an output shaft of the power cylinder (23a) and a second connecting rod (23c) directly and fixedly connected with the rubber pressure head (23d), the first connecting rod (23b) is vertically penetrated by a waist-shaped adjusting hole, a waist-shaped mounting hole is vertically arranged at the position of the second connecting rod (23c) in a penetrating way, the length direction of the waist-shaped adjusting hole is parallel to the rod length direction of the first connecting rod (23b), the hole type length direction of the waist-shaped mounting hole is parallel to the rod length direction of the second connecting rod (23c), and the adjusting screw lead vertically penetrates through the waist-shaped mounting hole and the waist-shaped adjusting hole and then forms a thread fixedly connected fit relation with the adjusting nut.

2. The four-station rotating disc type hot rivet welding machine as claimed in claim 1, wherein: the hot riveting head (31) is in a straight column shape; elastic telescopic compression bars (32) are arranged along the axis of the hot riveting head (31) in an axisymmetric manner, and the axes of the two groups of elastic telescopic compression bars (32) are arranged vertically; the horizontal height of the elastic telescopic end of the elastic telescopic pressing rod (32) in the initial state is lower than the bottom end surface height of the hot riveting head (31), and the horizontal height of the elastic telescopic end of the elastic telescopic pressing rod (32) in the maximum shrinkage is higher than the bottom end surface height of the hot riveting head (31).

3. The four-station rotating disc type hot rivet welding machine as claimed in claim 2, wherein: the vertical lifting mechanism comprises a fixed frame (51) fixed on the frame (10), and two ends of a ball fixed screw rod (52) with a vertical axis are rotatably matched on the frame (10) through bearing seats; the top end of the ball fixed screw rod (52) is in power connection with a driving motor (54) through a coupler (53), and a slide plate (55) is in threaded fit with the rod body of the ball fixed screw rod (52); the surface of the sliding plate (55) is horizontally arranged, guide holes are arranged on two sides of the sliding plate (55), so that a hole-shaft insertion type guide fit relation is formed between the sliding plate and guide rods (56) symmetrically arranged on two sides of the axis of the ball fixed screw rod (52), and two ends of each guide rod (56) are fixedly connected and matched with the fixed frame (51); the top end of the hot riveting head (31) and the bottom seat end of the elastic telescopic pressure lever (32) are fixed on the end surface of the bottom of the sliding plate (55).

4. The four-station rotating disc type hot rivet welding machine as claimed in claim 3, wherein: a vertical aligning rod (33) extends vertically downwards from the sliding plate (55), and a aligning hole (22b) for the vertical aligning rod (33) to penetrate from top to bottom is correspondingly formed in the profiling positioning tool (22); the vertical guide mechanism operates to enable the vertical guide rod (33) to have two positions of a high position and a low position: when the vertical guide rod (33) is in a high state, the vertical guide rod (33) and the action path of the turntable assembly (20) are mutually spatially avoided; when the vertical correcting rod (33) is in a low position state, a hole-shaft plug-in type guiding matching relation is formed between the vertical correcting rod (33) and the correcting hole (22 b); the horizontal height of the bottom end surface of the vertical guide rod (33) is lower than the horizontal height of the elastic telescopic end of the elastic telescopic pressure rod (32) in the initial state.

5. The four-station rotating disc type hot rivet welding machine as claimed in claim 4, wherein: two opposite sides of the bottom surface of the four groups of profiling positioning tools (22) extend horizontally and reversely to form flanges (22a), and the two groups of flanges (22a) are provided with a group of pilot holes (22b) in one-to-one correspondence; and assembly holes are also arranged at the two groups of flanges (22a), and fixing screws penetrate through the assembly holes so as to fixedly connect the detachable threads of the profiling positioning tool (22) to the upper disc surface of the rotary disc (21).

6. A four-station carousel hot rivet welding machine according to claim 1 or 2 or 3 or 4, characterized in that: the lower disc surface of the rotary disc (21) is in rotary fit with the working table surface (11) of the frame (10) through a coaxial plane bearing; and a sensor for monitoring the number of rotation turns of the output shaft of the four-position cam divider is arranged at the frame (10).

7. A four-station carousel hot rivet welding machine according to claim 1 or 2 or 3 or 4, characterized in that: the two-dimensional code scanning assembly comprises a first support (60) fixed on a rack (10) beside a two-dimensional code scanning process, the first support (60) comprises a first cross rod (62), one end of the first cross rod (62) is fixed at a first vertical rod (63) through a group of cross fixing seats so as to realize the vertical Y-axis adjusting function of the first cross rod (62), and the bottom end of the first vertical rod (63) is installed on a workbench surface (11) of the rack (10) through a first installation seat (64); the other end of the first cross rod (62) is fixed on the second vertical rod (61) through another group of cross fixing seats, and the bottom end of the second vertical rod (61) is fixedly connected with a code scanning instrument (90) so as to achieve the purpose of horizontal X-axis adjustment of the code scanning instrument (90).

8. A four-station carousel hot rivet welding machine according to claim 1 or 2 or 3 or 4, characterized in that: the visual detection assembly comprises a second support (70) fixed on a rack (10) beside a shooting procedure, the second support (70) comprises a second cross rod (71), one end of the second cross rod (71) is fixed at a third vertical rod (72) through a group of cross fixing seats so as to realize the vertical Y-axis adjusting function of the second cross rod (71), and the bottom end of the third vertical rod (72) is installed on a workbench surface (11) of the rack (10) through a second installation seat (74); the horizontal sliding block (73) is sleeved at the other end of the second cross rod (71) and forms a fastening screw type fixed connection matching relationship with the second cross rod (71), and the horizontal sliding block (73) is fixedly connected with the shooting device (80); the shooting device (80) comprises a right-angle groove-shaped fixed groove plate (81) which is directly and fixedly connected to the horizontal sliding block (73) and has an opening facing one side, the upper groove wall of the fixed groove plate (81) is fixedly connected with a camera (82), the lens of the camera (82) faces downwards, and an avoiding hole which avoids the shooting path of the camera (82) is vertically arranged at the lower groove wall of the fixed groove plate (81) in a penetrating manner; and a light source (83) for irradiating the airbag cover at the shooting process is arranged at the lower hole end of the avoidance hole.

9. A welding method using the four-station rotating disc type hot rivet welding machine as claimed in claim 1, 2, 3 or 4, characterized by comprising the following steps:

1) and a pre-process:

starting a power supply button, and confirming the type of the airbag cover to be produced so as to call a corresponding product program from the system; then, for the current type of the airbag cover, the manual replacement operation of the four copying fixing tools is carried out adaptively; the hot riveting head (31) is started for preheating, and the temperature of the hot riveting head (31) is controlled by the system to reach a required state; manually checking whether the surfaces of the airbag cover and the logo or the logo ring have defects, and if the surfaces have defects, placing the airbag cover and the logo or the logo ring into a bad area; then, taking out the two-dimensional code from the two-dimensional code printing mechanism (40), attaching the two-dimensional code to a defect-free airbag cover which is manually checked, and placing the airbag cover attached with the two-dimensional code on a fetal membrane surface of a profiling positioning tool (22) at a feeding and discharging station;

2) and a code scanning procedure:

the loading and unloading station is started, and the rotary pressing cylinder (23) acts and presses the airbag cover; a power motor (25) drives the four-station cam divider to rotate through a reduction gearbox (24), and then a rotary disc (21) is rotated, so that the airbag cover after being scanned to the two-dimensional code scanning station is rotated; the two-dimensional code scanning assembly works and reads the two-dimensional code;

3) and hot riveting:

a power motor (25) drives the four-station cam divider to rotate through a reduction gearbox (24), and then a rotary disc (21) is rotated, so that the airbag cover after being scanned is rotated to a hot riveting station; the vertical lifting mechanism drives the hot rivet head (31) to descend to a set position and stop; the hot riveting head (31) starts hot riveting operation relative to the riveting column at the position of the logo or the logo ring, and after a set time, the hot riveting head (31) is lifted and reset under the driving of the vertical lifting mechanism to complete hot riveting operation of the riveting column at the position of the logo or the logo ring;

4) and shooting and blanking procedures:

a power motor (25) drives the four-station cam divider to rotate through a reduction gearbox (24), and then a rotary disc (21) is rotated, so that the riveted airbag cover rotates to a shooting station; the visual detection component starts to take a picture, transmits the picture taking information to the system, compares the picture taking information with a qualified picture prestored in the system, and displays an output result by an indicator light; then, the rotary disc (21) is driven by the four-station cam divider again to rotate to a feeding and discharging station again, the rotary pressing cylinder (23) is opened at the moment, a feeding worker takes down the airbag cover and visually observes an indicator light, and when the indicator light is green, the airbag cover is a qualified product and is placed in a qualified area; when the indicator light is red, the defective product is obtained, and the defective area is placed.