阅读说明：本技术 一种四工位转盘式热风焊接机及其焊接方法 (Four-station rotating disc type hot air welding machine and welding method thereof ) 是由 俞瑞富 秦爱胜 吴魏 谢大智 邱春辉 于 2019-09-29 设计创作，主要内容包括：本发明属于汽车配件加工技术领域,具体涉及一种四工位转盘式热风焊接机及其焊接方法。一种四工位转盘式热风焊接机,包括带有工作台面的机架,机架处设置转盘组件以及布置于转盘组件旁侧的热风组件及铆压组件,从而可实现自动化的安全气囊盖处司标及司标环的焊接操作,并具备操作门槛低、焊接过程省时省力以及焊接时不会对工人造成伤害的优点,司标及司标环的焊接质量可得到有效保证。本发明的另一个目的是提供一种应用所述四工位转盘式热风焊接机的焊接方法,包括以下步骤：1)、前置工序：2)、扫码工序：3)、热风工序；4)、铆压工序；5)、拍摄及下料工序,从而系统化的提升上述焊接流程的实际处理效率。(The invention belongs to the technical field of automobile part machining, and particularly relates to a four-station rotating disc type hot air welding machine and a welding method thereof. The utility model provides a quadruplex position carousel formula hot air welding machine, is including the frame that has table surface, and frame department sets up the carousel subassembly and arranges hot air assembly and the riveting subassembly in carousel subassembly side to can realize the welding operation of automatic air bag lid department mark and mark ring, and possess the operation threshold low, welding process labour saving and time saving and can not cause the advantage of injury to the workman when welding, the welding quality of mark and mark ring can effectively be guaranteed. The invention also aims to provide a welding method using the four-station rotating disc type hot air welding machine, which comprises the following steps: 1) and a pre-process: 2) and a code scanning procedure: 3) and a hot air process; 4) riveting and pressing; 5) shooting and blanking processes, thereby systematically improving the actual processing efficiency of the welding process.)

1. The utility model provides a quadruplex position carousel formula hot air welding machine which characterized in that: this hot-blast welding machine is including frame (10) that has table surface (11), and frame (10) department sets up carousel subassembly (20) and arranges in hot-blast subassembly (30) and riveting subassembly (40) of carousel subassembly (20) side, wherein:

the appearance of the rack (10) is in a square frame shape, three horizontal plate surfaces are arranged in the rack (11) 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 plate surface forms a working table surface (10) for placing a turntable assembly (20), a hot air assembly (30) and a riveting assembly (40), and the top plate surface forms an observation layer for placing a two-dimensional code printing mechanism 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 hot air station, a riveting station and a shooting station; the hot air assembly (30) is positioned at the hot air station, the hot air assembly (30) comprises a hot air head (31) used for blowing hot air to the logo or the logo ring, and a hot air outlet of the hot air head (31) is vertically downward and points to the logo or the logo ring; the hot air head (31) is driven by a first vertical lifting mechanism fixed on the worktable surface (11) to generate vertical lifting action of lead; the riveting component (40) is positioned at the riveting station, and the riveting component (40) comprises a riveting head (41) for riveting the mark or mark ring after hot air blowing; the riveting head (41) is driven by a second vertical lifting mechanism fixed on the working table surface (11) to generate vertical lifting action of lead;

the hot air welding machine further comprises a two-dimensional code scanning assembly and a visual detection assembly, wherein the two-dimensional code scanning assembly is used for scanning the airbag cover at the loading and unloading station, and the visual detection assembly is used for photographing at the photographing station to obtain the image of the airbag cover so as to facilitate system comparison.

2. The four-station rotating disc type hot air welding machine according to claim 1, characterized in that: the hot air head (31) comprises an outer cylinder body which is fixedly connected to the action end of the first vertical lifting mechanism and has a vertical axis, the top cylinder opening of the outer cylinder body is communicated with an air outlet pipe of the hot air gun (311), and the bottom cylinder opening of the outer cylinder body forms a heating opening; a screen-plate-shaped dispersion plate (312) is coaxially and fixedly connected in the cylinder cavity of the outer cylinder body, so that the cylinder cavity of the outer cylinder body is divided into an air inlet cavity positioned above and a flow stabilizing cavity positioned below; an air outlet column (313) which can extend into the airbag cover is coaxially and fixedly connected with the heating port, an air outlet channel is coaxially arranged at the air outlet column (313) in a penetrating manner, and the air outlet channel is communicated with the flow stabilizing cavity and the external environment; the outlet of the air outlet channel is in a necking shape with the caliber gradually reduced from top to bottom.

3. The four-station rotating disc type hot air welding machine according to claim 2, characterized in that: the air outlet column (313) comprises an upper cylinder (313a) directly fixed at the bottom end face of the outer cylinder and a lower plate body (313c) which is attached to the bottom end face of the upper cylinder (313a) on the plate surface and coaxially fixedly connected with the upper cylinder (313a), a cylindrical hole (313b) is axially arranged at the upper cylinder (313a) in a penetrating manner, and a bell mouth-shaped air nozzle (313d) with a large upper part and a small lower part is coaxially arranged at the lower plate body (313c) corresponding to the cylindrical hole (313b) in a penetrating manner, so that the cylindrical hole (313b) and the air nozzle (313d) are matched together to form the air outlet channel; the air outlet structure is characterized in that an air hole adjusting plate (313e) is coaxially arranged below the lower plate body (313c) and attached to the surface of the lower plate body, and the air hole adjusting plate (313e) corresponds to the position of each air nozzle (313d) and penetrates through an adjusting hole (313f) used for guiding the air outlet direction of the air outlet channel.

4. The four-station rotating disc type hot air welding machine according to claim 3, characterized in that: the outer cylinder body is formed by mutually matching a first annular plate (314), a second annular plate (315), a third annular plate (316) and a fourth annular plate (317) which are coaxial in sequence in the vertical direction and are provided with surfaces in an attached mode in a threaded mode, an annular cavity of the first annular plate (314) forms an inserting and fixing cavity for fixedly connecting an air outlet pipe of the hot air gun (311), the plate edge of the dispersion plate (312) is clamped between the second annular plate (315) and the third annular plate (316) to fix the dispersion plate (312), and meanwhile the third annular plate (316) also forms a matching plate matched with the action end of the first vertical lifting mechanism; the top ends of the air outlet columns (313) are integrally and fixedly connected to the lower ring surface of the fourth ring plate (317), and heat insulation cushion layers (318) are arranged among the ring plates, between the first ring plate (314) and an air outlet pipe of the hot air gun (311), and between the fourth ring plate (317) and the air outlet columns (313).

5. A four-station rotating disc type hot air welding machine according to claim 1 or 2 or 3 or 4, characterized in that: the first vertical lifting mechanism and the second vertical lifting mechanism comprise fixed frames (51) fixed on the frame (10), and two ends of a ball fixed screw rod (52) with vertical axes are rotationally 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 riveting head (41) is in a cylindrical block shape with the axis vertically arranged, the bottom end surface of the riveting head (41) forms a riveting surface, and the top end surfaces of the hot air head (31) and the riveting head (41) are fixedly connected to the bottom end surface of the corresponding sliding plate (55) in a threaded mode.

6. The four-station rotating disc type hot air welding machine according to claim 5, characterized in that: the riveting component (40) further comprises elastic telescopic pressure rods (42) which are axially and symmetrically arranged on two sides of the riveting head (41) along the axis of the riveting head (41), and the axis of each elastic telescopic pressure rod is vertically arranged; the bottom end of the elastic telescopic pressing rod (42) is fixedly connected to the lower plate surface of the corresponding sliding plate (55), the horizontal height of the elastic telescopic end of the elastic telescopic pressing rod (42) in the initial state is lower than the bottom end surface height of the riveting head (41), and the horizontal height of the elastic telescopic end of the elastic telescopic pressing rod (42) in the maximum shrinkage is higher than the bottom end surface height of the riveting head (41).

7. A four-station rotating disc type hot air welding machine according to claim 1 or 2 or 3 or 4, characterized in that: the four groups of profiling positioning tools (22) are detachably and fixedly connected to the upper disc surface of the rotary disc (21) through thread matching; 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 rotation number of the output shaft of the four-station cam divider is arranged at the frame (10).

8. A four-station rotating disc type hot air 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 feeding and discharging 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).

9. A four-station rotating disc type hot air 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.

10. A welding method using the four-station rotating disc type hot air welding machine as claimed in claim 1, 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 four copying fixing tools, a hot air head (31) and a riveting head (41) is carried out adaptively; the hot air head (31) is started for preheating, the air outlet temperature and the air speed of the hot air head (31) are controlled to reach a stable state through the system, and the requirements of a welding process are met; 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 the airbag cover, and placing the airbag cover attached with the two-dimensional code on the fetal membrane surface of the profiling positioning tool (22) at the loading and unloading 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 two-dimensional code scanning assembly works and reads the two-dimensional code;

3) and a hot air process:

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

4) and riveting and pressing:

the power motor drives the four-station cam divider to rotate through the reduction gearbox, and then the rotary disc (21) is rotated, so that the airbag cover with the rivet columns subjected to hot melting rotates to a riveting station; the second vertical lifting mechanism drives the riveting head (41) to move downwards to a set position, the riveting head (41) can press the riveted and melted riveting column at the moment, and then the riveting head (41) resets to complete the riveting operation of the riveting column of the logo or logo ring;

5) and shooting and blanking procedures:

the power motor drives the four-station cam divider to rotate through the reduction gearbox, and then the 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 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.

Technical Field

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

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 relative to the airbag cover is shown in fig. 3, the logo and the logo ring are deep into the airbag cover, the traditional welding method adopts a manual operation mode to carry out welding, and the welding means adopts a handheld hot air gun to directly press down and is matched with the later period to beat and shape 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. Meanwhile, the problems that smoke generated in the welding process is harmful to human bodies, the whole logo or the logo ring cannot be completely covered in a hot air core area and the like are frequently generated in the existing welding process of the logo and the logo ring, and therefore much trouble is brought to actual welding operation.

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 air welding machine with a reasonable structure, the hot air 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, time and labor saving in the welding process and no harm to workers during welding, 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 air welding machine, so that the actual treatment efficiency of the welding process is systematically improved.

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

the utility model provides a quadruplex position carousel formula hot air welding machine which characterized in that: this hot-blast welding machine is including the frame that has table surface, and frame department sets up the carousel subassembly and arranges hot-blast subassembly and the riveting subassembly in carousel subassembly side, 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, a hot air assembly and a 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 hot air station, a riveting station and a shooting station; the hot air assembly is positioned at the hot air station and comprises a hot air head for blowing hot air to the logo or the logo ring, and a hot air outlet of the hot air head is vertically downward and points to the logo or the logo ring; the hot air head is driven by a first plumb lifting mechanism fixed on the working table surface to generate vertical lifting action of lead; the riveting component is positioned at the riveting station and comprises a riveting head for riveting the mark or the mark ring after hot air blowing; the riveting head is driven by a second plumb lifting mechanism fixed on the working table surface to generate vertical lifting action of lead;

the hot air welding machine further comprises a two-dimensional code scanning assembly and a visual detection assembly, wherein the two-dimensional code scanning assembly is used for scanning the airbag cover at the loading and unloading station, and the visual detection assembly is used for photographing at the photographing station to obtain the image of the airbag cover so as to facilitate system comparison.

Preferably, the hot air head comprises an outer cylinder body which is fixedly connected with the action end of the first vertical lifting mechanism and has a vertical axis, a cylinder opening at the top end of the outer cylinder body is communicated with an air outlet pipe of the hot air gun, and a cylinder opening at the bottom end of the outer cylinder body forms a heating opening; a screen-plate-shaped dispersion plate is coaxially and fixedly connected in the cylinder cavity of the outer cylinder body, so that the cylinder cavity of the outer cylinder body is divided into an air inlet cavity positioned above and a flow stabilizing cavity positioned below; an air outlet column which can extend into the airbag cover is coaxially and fixedly connected to the heating port, an air outlet channel is coaxially arranged at the air outlet column in a penetrating mode, and the air outlet channel is communicated with the flow stabilizing cavity and the external environment; the outlet of the air outlet channel is in a necking shape with the caliber gradually reduced from top to bottom.

Preferably, the air outlet column comprises an upper column body directly fixed at the bottom end face of the outer cylinder body and a lower plate body, wherein the plate face of the lower plate body is attached to the bottom end face of the upper column body and coaxially fixedly connected with the upper column body; the board body below department is still coaxial and the face laminating be provided with wind hole regulating plate down, wind hole regulating plate department corresponds each tuyere position and runs through and offers the regulation hole that is used for direction air-out passageway department air-out direction.

Preferably, the outer cylinder body is formed by matching a first annular plate, a second annular plate, a third annular plate and a fourth annular plate which are coaxial in sequence in the vertical direction and are attached to one another on the plate surface in a threaded manner, an annular cavity of the first annular plate forms an insertion fixing cavity for fixedly connecting an air outlet pipe of the hot air gun, the plate edge of the dispersion plate is clamped between the second annular plate and the third annular plate to fix the dispersion plate, and meanwhile, the third annular plate also forms a matching plate matched with the action end of the first vertical lifting mechanism; the top end of the air outlet column is integrally and fixedly connected to the lower ring surface of the fourth ring plate, and heat insulation cushion layers are uniformly arranged among the ring plates, between the first ring plate and the air outlet pipe of the hot air gun and between the fourth ring plate and the air outlet column.

Preferably, the first vertical lifting mechanism and the second vertical lifting mechanism comprise fixed frames fixed on the frame, and two ends of a ball fixing screw rod with a vertical axis are matched on the frame in a rotating manner 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 riveting head is a cylindrical block with a vertical axis, the bottom end surface of the riveting head forms a riveting surface, and the top end surfaces of the hot air head and the riveting head are fixedly connected to the bottom end surface of the corresponding sliding plate in a threaded manner.

Preferably, the riveting assembly further comprises elastic telescopic pressure rods which are axially and symmetrically arranged on two sides of the riveting head along the axis of the riveting head, and the axis of each elastic telescopic pressure rod is vertically arranged; the bottom end of the elastic telescopic pressing rod is fixedly connected to the lower plate surface of the corresponding sliding plate, the horizontal height of the elastic telescopic end of the elastic telescopic pressing rod in the initial state is lower than the bottom end surface height of the 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 bottom end surface height of the riveting head.

Preferably, the four groups of profiling positioning tools are detachably and fixedly connected to the upper disc surface of the rotary disc through thread matching; the lower disc surface of the rotary disc is matched on the working table surface of the frame in a rotary manner through a plane bearing which is coaxially arranged; 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, the two-dimensional code scanning assembly comprises a first support fixed on the rack beside the feeding and discharging process, the first support comprises a first cross rod, one end of the first cross rod is fixed at the 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 the 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 air 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 four copying fixing tools, a hot air head and a riveting head is carried out adaptively; the hot air head is started for preheating, the air outlet temperature and the air speed of the hot air head are controlled to reach a stable state through the system, and the requirements of a welding process are met; 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 the airbag cover, and placing the airbag cover attached with the two-dimensional code on the tire surface of the profiling positioning tool at the 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 two-dimensional code scanning assembly works and reads the two-dimensional code;

3) and a hot air process:

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 a hot air station; the first plumb lifting mechanism drives the hot air head to descend to a set position and stop; the hot air head starts to blow out hot air, stops blowing out the hot air after a set time, and then resets under the driving of the first vertical lifting mechanism to finish the hot melting operation of the riveting column at the position of the logo or the logo ring;

4) and riveting and pressing:

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 with the rivet columns subjected to hot melting rotates to the riveting station; the second vertical lifting mechanism drives the riveting head to move downwards to a set position, the riveting head presses the riveted and melted riveting column at the moment, and then the riveting head resets to complete riveting operation of the riveting column of the logo or logo ring;

5) and shooting and blanking procedures:

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 to rotate to a feeding and discharging station again, the rotary pressing cylinder 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.

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 hot air station, the riveting station and the shooting station is further achieved. On the other hand, the hot air assembly and the riveting assembly are respectively arranged at the hot air station and the riveting station, so that the aims of automatic hot melting of the fixed point of the logo or the logo ring at the airbag cover and subsequent reliable riveting are fulfilled. After the logo or the logo ring is installed on the airbag cover, the rivet columns at the logo and the logo ring gradually reach a molten state under the action of heated gas at the hot air head, and then under the action of driving the rotary disc to rotate by the four-station cam divider, the rivet heads at the next working procedure are pressed downwards to realize cooling, crystallization and sizing, and then shooting and blanking operations are completed. Although the whole process is still semi-automatic, the hot melting and riveting operation which is used as a main body and has the highest requirement on the operation threshold is completely operated by the full-automatic machinery, 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 blast 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 mark and the mark ring can be effectively ensured, thereby achieving multiple purposes.

2) The hot air head is one of the key structures of the invention. The traditional pure hot air gun directly blows out air, and has the inherent defects that the hot air speed is not enough and the mark or the mark ring cannot be completely covered when the hot melting operation is carried out. The most typical performance is that within the limited operation time of hot-melting, slightly improper operation, hot air is often gathered in the upper layer area of a part of the logo and the logo ring and cannot be pushed downwards continuously, so that the hot-melting degree of the logo or the logo ring is not enough, and finally the reject ratio of a riveted finished product is extremely high, which is the place most experimented with professional literacy of workers during manual hot riveting. In view of the above, the present invention provides a novel hot air head structure, which uses the barrel cavity of the outer barrel as the intermediate processing cavity channel, and after hot air is blown into the barrel cavity of the outer barrel through the hot air gun, the hot air is firstly blocked by the dispersion plate to gather in the air inlet cavity, and then passes through the sieve holes at the dispersion plate at a relatively slow speed to flow into the steady flow cavity. And then, the hot air in the slow flow stabilizing cavity can be uniformly blown out of the outside through a plurality of preset air outlet channels at the air outlet columns, and the air speed and the air pressure at each air outlet channel are extremely balanced, so that the aim of one-time complete covering type hot melting of all logo or logo rings is fulfilled. More nuclear point lies in, the export appearance of air-out passageway is the throat form that the bore from top to bottom reduces gradually, can make the hot-blast homodisperse condition before satisfying back of relatively slow speed, carries out the secondary again and accelerates the flow along above-mentioned throat structure to can carry out the heat with faster wind speed and melt the operation, with satisfying the all-round purpose of blowing at heat-melt dead angle, its use reliability is high.

3) The air outlet column is provided as a replaceable structure. On the one hand, the air outlet column passes through the screw thread rigid coupling mode and the flange rigid coupling is in outer barrel department to can realize the change operation of adaptability according to the difference of air bag lid model, the flexibility ratio of operation is higher. On the other hand, the air outlet column is subdivided into an upper column body with a cylindrical hole and a lower plate body with an air nozzle, so that the original air outlet channel is realized in a split mode, and actual processing and assembly are facilitated. In addition, the arrangement of the wind hole adjusting plate is used for further restricting the wind direction and even making up the design error of the wind speed so as to play a double-insurance function.

4) And further, the outer cylinder body is formed by mutually matching the vertical direction with the first annular plate, the second annular plate, the third annular plate and the fourth annular plate which are coaxial according to the sequence and are provided with the surfaces in a laminating manner, so that the detachability among the plate bodies is realized. Considering the size difference of the mark and the mark ring caused by the type of the airbag cover, the position and the size of the air opening at the air outlet column need to be changed adaptively. Therefore, the air outlet column and the fourth ring plate form an integral structure, and the aim of conveniently disassembling the air outlet column and the fourth ring plate is fulfilled through the detachable matching between the air outlet column and the third ring plate. Once the airbag cover model is changed, the fourth ring plate and the air outlet column can be detached together from the third ring plate, and the fourth ring plate which is in line with the current airbag cover model and is provided with a new air outlet column can be replaced, so that the online replacement efficiency is high, and the use is very convenient. For the heat insulation cushion layer, a heat insulation structure such as a heat insulation shaft sleeve or a heat insulation ring can be used, so as to ensure the external heat insulation effect of the cavity space of the outer cylinder body, so as to reduce heat loss, and the detailed description is omitted here.

5) For the first vertical lifting mechanism and the second vertical lifting mechanism, various realization structures can be provided, such as a mode of adopting a cylinder to lift up and even adopting a crank block mechanism and the like. The invention preferably adopts a threaded screw rod structure, thereby ensuring the action accuracy of the hot air head and the 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.

6) The riveting head is required to be provided with elastic telescopic pressing rods on two sides, so that the purposes of avoiding the direct impact of the riveting head on the riveting column after hot melting and pressing down the positioning airbag cover during riveting 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.

7) Four same profile modeling location frocks of group are also detachable to be fixed in on the gyration dish to in fact change. 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.

8) The two-dimensional code scanning assembly is used for realizing the code scanning operation of the airbag cover at the feeding and discharging 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 front view of the structure shown in FIG. 4;

FIG. 6 is a diagram showing the positions of the turntable assembly, the hot air assembly and the riveting assembly;

FIG. 7 is a perspective view of the turntable assembly;

FIG. 8 is a perspective view of the hot air assembly;

FIG. 9 is a left side view of FIG. 8;

FIG. 10 is a schematic view of the internal structure of the hot air head;

FIG. 11 is an enlarged view of a portion I of FIG. 10;

FIG. 12 is an exploded view of the structure of the hot air head;

FIG. 13 is a schematic perspective view of a riveting assembly;

FIG. 14 is a left side view of FIG. 13;

fig. 15 is a schematic perspective view of a two-dimensional code scanning assembly;

fig. 16 is a schematic perspective view of a 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-rotary disc 22-profiling positioning tool

23-rotating compaction cylinder 24-reduction gearbox 25-power motor

30-hot air component 31-hot air head

311-hot air gun 312-dispersion plate 313-air outlet column

313 a-upper column 313 b-cylindrical hole 313 c-lower plate 313 d-tuyere

313 e-wind hole adjusting plate 313 f-adjusting hole

314-first ring plate 315-second ring plate 316-third ring plate

317 fourth ring plate 318 Heat insulating cushion layer

40-riveting component 41-riveting head 42-elastic telescopic pressure lever

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. 1-16:

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-melt and riveting installation, the structure shown in fig. 1 and 2 as shown in fig. 3 needs to be installed into a hole groove preset in an airbag cover a, and fixed by hot-riveting so as to form an integrated structure.

On the basis of the above-mentioned prior structure, the specific structure of the present invention is shown in fig. 4-16, and the main structure thereof includes a frame 10 with a working table 11, a turntable assembly 20 is disposed at the frame 10, and a hot air assembly 30 and a riveting assembly 40 are 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 part, the middle part and the lower part 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, the hot air assembly 30 and the riveting assembly 40, and the top layer forms an observation layer for placing components such as a two-dimensional code printing mechanism, an indicator light and the like. The detailed description of each component at the middle layer is mainly given here, and the components such as the system control box, the two-dimensional code printing mechanism, the indicator light and the like all belong to conventional electronic accessories, and therefore the detailed description is omitted.

The structure of the turntable assembly 20 is shown in fig. 4-14, 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. When the riveting assembly 40 is pressed down at the riveting station, the flat bearing plays a supporting role. The profiling positioning tool 22 is a finished product structure which is used more in the injection molding industry, and is detachably mounted on the rotary disc 21, so that a quick-change tire mold tool is formed, and the profiling positioning tool 22 can be quickly changed when air bag covers a of different specifications are produced. As for the rotary pressing cylinder 23 as the pressing component, it is even conceivable to arrange its connecting rod as a two-section type waist-shaped hole assembly length or even angle adjustable structure as shown in fig. 7, so that the appropriate length and angle can be adjusted for different specifications of airbag covers a, thereby conveniently pressing the airbag covers a at any time.

The hot air assembly 30 is formed by a first vertical lifting mechanism and a hot air head 31. The riveting assembly 40 is formed by a second vertical lifting mechanism and a riveting head 41. As shown in fig. 10 to 14, the first vertical lifting mechanism and the second vertical lifting mechanism include a fixed frame 51 formed by combining structures such as a bottom plate, a support plate, a reinforcing rib, a base, and the like, and the fixed frame 51 is disposed 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 air head 31 to descend to the set position through the ball fixing screw 52 and stop descending. Aiming at different specifications of airbag cover a, the descending positions of the hot air head 31 are different, the hot air blowing time of the hot air gun 311 is also different, and a corresponding program needs to be called in the system. The driving motor 54 must be driven to make the displacement and torque within the set range, so that the position of the hot air head 31 is correct. When the hot air 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 can give an alarm, and the driving motor 54 drives the hot air head 31 to return to the initial position through the ball fixing screw 52 and needs manual treatment. Similarly, the lowering positions of the riveting heads 41 are different for airbag covers a of different specifications, the riveting time of the riveting heads 41 is also different, and corresponding programs need to be called according to actual needs. The drive motor 54 must be such that the displacement and torque are within the set range and the position of the rivet head 41 is correct. If one or both of the torque of the driving motor 54 and the displacement generated by the driving slide 55 do not satisfy the requirements, the riveting product is poor. The working surface of the riveting head 41 is treated with teflon to prevent stringing after riveting.

When the driving motor 54 drives the riveting head 41 to descend to the set position through the ball fixing screw 52, the elastic telescopic ends of the two elastic telescopic pressing rods 42 shown in fig. 13-14 press the airbag cover a left and right first, and then the riveting head 41 descends slowly to press the melted riveting column. The rivet column is held under pressure for a period of time after being riveted and molded, and is gradually cooled and solidified and molded along with the decrease 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 riveting head 41 to return to the initial position through the ball fixing screw 52.

The shape of the hot air head 31 is shown in fig. 8-11, and includes a hot air gun 311, a first ring plate 314, a second ring plate 315, a dispersion plate 312, a third ring plate 316, a fourth ring plate 317 and an air outlet column 313, which are coaxially disposed along the vertical direction. Wherein, the first ring plate 314 can be disposed with a heat insulation cushion 318 such as a heat insulation sleeve for matching with the outlet pipe of the heat gun 311, and the second ring plate 315 and the third ring plate 316 can cooperatively clamp and fix the dispersion plate 312. The fourth ring plate 317 and the air outlet column 313 form an integrated fixing structure, so that the air outlet column can be independently detached relative to the third ring plate 316. In actual use, the ring cavities of the first ring plate 314, the second ring plate 315, the third ring plate 316 and the fourth ring plate 317 are matched together to form an intermediate treatment cavity channel; at this time, after the hot air is blown into the cylinder cavity of the outer cylinder through the hot air gun 311, the hot air is firstly blocked by the dispersion plate 312 to be gathered in the air inlet cavity, and then passes through the sieve holes at the dispersion plate 312 at a relatively slow speed to flow into the steady flow cavity. And then, the hot air in the slow flow stabilizing cavity can uniformly pass through a plurality of preset air outlet channels at the air outlet column 313 to be blown out of the outside, so that the aim of one-time complete covering type hot melting of all the labels b or label rings c is fulfilled. Further, as shown in fig. 11, the air outlet column 313 itself is formed by an upper column 313a with a cylindrical hole 313b, a lower plate 313c with a tuyere 313d, and an air hole adjusting plate 313e with an adjusting hole 313f, which are arranged in sequence from top to bottom in a vertical direction. The cylindrical hole 313b is matched with the air nozzle 313d to form an air outlet channel, so that the outlet appearance of the air outlet channel is in a horn-shaped necking shape with the caliber gradually reduced from top to bottom, and further, after the relatively slow hot air meets the previous uniform dispersion condition, a secondary acceleration flow can be carried out at the air nozzle 313d, so that the hot-melt operation can be carried out at a fast air speed, the blowing purpose of a hot-melt dead angle is met, and the use reliability is extremely high. And the arrangement of the air hole adjusting plate 313e plays a role in reliably guiding the air outlet direction. For ease of viewing, FIG. 11 is shown with increased cross-sectional lines in relation to FIG. 10 to facilitate distinguishing the mating condition of the components.

As shown in fig. 16, 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 riveted standard products as templates.

As shown in fig. 15, the two-dimensional code scanning assembly includes a first bracket 60 fixed to the rack 10 beside the loading and unloading 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, the air outlet column 313 at the hot air head 31 and the riveting head 41 is carried out adaptively. The hot air gun 311 is turned on to preheat, and the air outlet temperature and the air speed of the hot air head 31 are controlled by the system to reach a stable state, so that the welding process requirements are met. 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, attaching the two-dimensional code to the airbag cover, and putting the airbag cover attached 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. And the two-dimensional code scanning assembly works and performs two-dimensional code reading operation.

3) And a hot air process:

the power motor drives the four-station cam divider to rotate through the reduction gearbox, and then the rotary disc 21 is rotated, so that the airbag cover after being scanned is rotated to the hot air station. The first vertical lifting mechanism drives the hot air head 31 to descend to a set position and stop; and the hot air head 31 starts to blow out hot air, stops blowing out the hot air after a set time, and then resets under the driving of the first vertical lifting mechanism, so that the hot melting operation of the riveting column at the position of the logo or the logo ring is completed.

4) And riveting and pressing:

the power motor drives the four-station cam divider to rotate through the reduction gearbox, and then the rotary disc 21 is rotated, so that the airbag cover after the riveting column is melted by heat is rotated to the riveting station. The second vertical lifting mechanism drives the riveting head 41 to move downwards to a set position, the riveting head 41 can press the riveted and fused riveting column at the moment, and then the riveting head 41 resets to complete riveting operation of the riveting column of the logo or logo ring.

5) And shooting and blanking procedures:

the power motor drives the four-station cam divider to rotate through the reduction gearbox, 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. Then, the rotary disc 21 is rotated to a feeding and discharging station under the driving of the four-station cam divider again, the rotary pressing cylinder 23 is opened at the moment, a feeding worker takes off 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.