阅读说明：本技术 一种热吹风式徽标焊接装置 (Hot blowing type logo welding device ) 是由 幸思童 王超 高尚兰 李茹 于 2019-09-29 设计创作，主要内容包括：本发明公开的一种热吹风式徽标焊接装置,包括：一机架,所述机架内构成有一工作平面,在所述工作平面上划分有一热风工位和一冷压工位；一设置在工作平面上的仿形底模；一安装在机架上的工位切换传动机构；一安装在热风工位处的热吹风工装；一安装在热风工位上的第一伺服升降机构；一安装在热风工位处的第一光电传感器；一安装在冷压工位处的冷压工装；一安装在冷压工位上的第二伺服升降机构；一安装在冷压工位处的第二光电传感器；以及一分别与工位切换传动机构、热吹风工装、冷压工装、第一、第二伺服升降机构、第一、第二光电传感器连接的PLC控制器。本发明采用非接触式热铆形式,有效保障了产品装配的技术要求。(The invention discloses a hot blowing type logo welding device, which comprises: the hot air cooling machine comprises a rack, wherein a working plane is formed in the rack, and a hot air station and a cold pressing station are divided on the working plane; a profiling bottom die arranged on the working plane; a station switching transmission mechanism arranged on the frame; a hot air blowing tool arranged at the hot air station; the first servo lifting mechanism is arranged on the hot air station; the first photoelectric sensor is arranged at the hot air station; a cold pressing tool arranged at the cold pressing station; the second servo lifting mechanism is arranged on the cold pressing station; the second photoelectric sensor is arranged at the cold pressing station; and the PLC is respectively connected with the station switching transmission mechanism, the hot air blowing tool, the cold pressing tool, the first servo lifting mechanism, the second servo lifting mechanism, the first photoelectric sensor and the second photoelectric sensor. The invention adopts a non-contact hot riveting mode, thereby effectively ensuring the technical requirements of product assembly.)

1. The utility model provides a hot blowing type logo welding set which characterized in that includes:

the hot air cooling machine comprises a rack, wherein a working plane is formed in the rack, and a hot air station and a cold pressing station are divided on the working plane;

the profiling bottom die is arranged on the working plane of the rack and used for placing the pre-assembled airbag cover cap and logo assembly;

the station switching transmission mechanism is arranged on the rack and connected with the copying bottom die and is used for driving the copying bottom die to switch between a hot air station and a cold pressing station in a reciprocating manner;

the hot air blowing tool is arranged at a hot air station of the working plane;

the first servo lifting mechanism is arranged on a hot air station of the working plane and used for driving the hot air blowing tool to vertically move up and down;

the first photoelectric sensor is arranged at a hot air station of the working plane and used for detecting whether the copying bottom die moves in place or not;

the cold pressing tool is arranged at a cold pressing station of the working plane;

the second servo lifting mechanism is arranged on the cold pressing station of the working plane and used for driving the cold pressing tool to vertically move up and down;

the second photoelectric sensor is arranged at the cold pressing station of the working plane and used for detecting whether the profiling bottom die moves in place or not; and

and the PLC controller is installed in the rack and is respectively connected with the station switching transmission mechanism, the hot air blowing tool, the first servo lifting mechanism, the first photoelectric sensor, the cold pressing tool, the second servo lifting mechanism and the second photoelectric sensor.

2. The hot-blast logo welding apparatus according to claim 1, wherein left and right clamping cylinders respectively connected to the PLC controller for clamping a pre-assembled airbag cover placed on the profiling bottom die to the logo assembly are provided on the profiling bottom die.

3. The hot-air logo welding apparatus according to claim 1, wherein said station switching transmission is a screw transmission.

4. The hot-air blowing type logo welding device according to claim 1, wherein the hot-air blowing tool comprises a hot air gun, an air guide pipe and a hot blowing head die, the air guide pipe is mounted on the first servo lifting mechanism, one end of the air guide pipe is connected with a hot air blowing opening of the hot air gun, the other end of the air guide pipe is connected with the hot blowing head die, and the hot air gun is connected with the PLC.

5. The hot-air type logo welding device according to claim 1, wherein a start button and a stop button respectively connected to the PLC controller are provided at a front side edge of the work plane of the rack.

6. The hot-air type logo welding device according to claim 1, wherein a safety baffle is respectively installed on the front side, the rear side, the left side, the right side and the top of the rack above the working plane, and the installation baffle on the front side is provided with a placing and taking window.

7. The hot-air type logo welding apparatus as claimed in claim 6, wherein a ventilating fan for adjusting the temperature of the inside of the housing is installed on the safety barrier located at the top surface.

8. The hot-air type logo welding apparatus according to claim 1, wherein a plurality of casters are provided at a bottom of the housing.

Technical Field

The invention relates to the technical field of automobile logo welding devices, in particular to a hot air blowing type logo welding device.

Background

The LOGO (automobile brand LOGO) on the existing DAB (driver airbag) template is different from the decorative cover in material and production process, so that the decorative cover and the LOGO are usually assembled by adopting a welding process, and the LOGO is connected with the decorative cover. The welding quality of the emblem is of utmost importance, since the underside of the emblem is the driver's airbag, which generates a strong impact force at the moment of the ignition. The two most common welding methods in the industry currently are: a cold pressing mode of ultrasonic welding and a hot pressing forming mode. Both of these methods are mature and reliable compared to the existing production processes, but they also have many disadvantages over a long period of time.

The principle of the ultrasonic welding mode is that the wave crest position of the longitudinal wave is utilized to transmit the amplitude to the gap of the plastic part, and under the condition of pressurization, molecules of the contact parts of the two plastic parts or other parts and the plastic part collide with each other to generate melting, so that the plastic at the contact position is fused, and the purpose is achieved. The welding head plays the most important role, and because the ultrasonic wave is continuously vibrated at high frequency of about 20KHZ, the requirement on materials is very high, the requirement on the processing precision is very high, and the cost is relatively high, and the shape of the material is required to be consistent with that of a welded piece. Because the tool has no universality, each product must be separately configured, and the cost is higher. In addition, due to high-frequency vibration, large noise pollution is generated during operation, and the damage to a human body is large.

The principle of the hot-press forming mode is that a hot-melting head is heated, and the logo hot-melting column is subjected to hot-press forming by utilizing the shape of the hot-melting head. Its advantages are low cost and flexible application. The hot melting air head has the disadvantages that beryllium copper heat conduction materials are generally used as materials of the hot melting head, a heating resistance wire is used for heating in an internal heating mode, the temperature is controlled through a temperature control instrument, the temperature of the hot melting air head is difficult to keep a constant temperature state, and the hot melting effect is not ideal. In addition, the heat-melting column is heated from outside to inside, and the plastic itself has poor thermal conductivity, so that the phenomenon that the outside is melted and the inside is broken easily occurs.

The applicant has therefore sought to solve the above problems, through the useful search and research, against which the technical solutions that will be described below have been derived.

Disclosure of Invention

The invention aims to solve the technical problems of high cost, high noise, unsatisfactory forming effect of a hot-press forming mode, poor equipment stability and the like of the conventional ultrasonic welding tool, and provides a hot-air type logo welding device which is low in cost, low in noise, good in forming effect and good in stability.

The technical problem to be solved by the invention can be realized by adopting the following technical scheme:

a hot-blast logo welding device, comprising:

the hot air cooling machine comprises a rack, wherein a working plane is formed in the rack, and a hot air station and a cold pressing station are divided on the working plane;

the profiling bottom die is arranged on the working plane of the rack and used for placing the pre-assembled airbag cover cap and logo assembly;

the station switching transmission mechanism is arranged on the rack and connected with the copying bottom die and is used for driving the copying bottom die to switch between a hot air station and a cold pressing station in a reciprocating manner;

the hot air blowing tool is arranged at a hot air station of the working plane;

the first servo lifting mechanism is arranged on a hot air station of the working plane and used for driving the hot air blowing tool to vertically move up and down;

the first photoelectric sensor is arranged at a hot air station of the working plane and used for detecting whether the copying bottom die moves in place or not;

the cold pressing tool is arranged at a cold pressing station of the working plane;

the second servo lifting mechanism is arranged on the cold pressing station of the working plane and used for driving the cold pressing tool to vertically move up and down;

the second photoelectric sensor is arranged at the cold pressing station of the working plane and used for detecting whether the profiling bottom die moves in place or not; and

and the PLC controller is installed in the rack and is respectively connected with the station switching transmission mechanism, the hot air blowing tool, the first servo lifting mechanism, the first photoelectric sensor, the cold pressing tool, the second servo lifting mechanism and the second photoelectric sensor.

In a preferred embodiment of the invention, a left clamping cylinder and a right clamping cylinder which are respectively connected with the PLC controller and are used for clamping the preassembled airbag cover cap and the logo assembly which are placed on the profiling bottom die are arranged on the profiling bottom die.

In a preferred embodiment of the invention, the station switching transmission is a screw transmission.

In a preferred embodiment of the present invention, the hot air blowing tool includes a hot air gun, an air duct, and a hot blowing head die, the air duct is installed on the first servo lifting mechanism, one end of the air duct is connected to the hot air blowing opening of the hot air gun, the other end of the air duct is connected to the hot blowing head die, and the hot air gun is connected to the PLC controller.

In a preferred embodiment of the present invention, a start button and a stop button, which are respectively connected to the PLC controller, are provided at a front side edge of the working plane of the rack.

In a preferred embodiment of the present invention, a safety barrier is respectively installed on a front side surface, a rear side surface, a left side surface, a right side surface and a top surface of the rack above the working plane, wherein the installation barrier located on the front side surface is provided with a placement and removal window.

In a preferred embodiment of the invention, a fan for regulating the temperature inside the housing is mounted on the safety shield located on the top side.

In a preferred embodiment of the invention, casters are provided at the bottom of the housing.

Due to the adoption of the technical scheme, the invention has the beneficial effects that: the invention adopts a non-contact hot riveting mode, the hot blowing tool can be designed to adapt to different logo post shapes, the problem that products cannot be compatible due to individual difference is solved, the shape change is convenient, the requirement on raw materials is low, the multi-point welding problem is solved, the welding principle reduces the internal stress at the root of a welding part compared with hot press forming, the parameters (temperature, time and air volume) in the welding process can be adjusted, the accurate control is realized, and the technical requirement of product assembly is effectively ensured.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

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

Fig. 2 is a schematic structural view of the present invention with the upper structure of the frame removed.

Fig. 3 is a top view of fig. 2.

Fig. 4 is a schematic diagram of a hot air blowing process of the present invention.

Fig. 5 is a schematic diagram of the cold pressing process of the present invention.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained below by combining the specific drawings.

Referring to fig. 1 to 3, a hot-air blowing logo welding device is provided, which includes a rack 100, a profiling bottom die 200, a station switching transmission mechanism 300, a hot-air blowing tool 400, a cold-pressing tool 500, servo lifting mechanisms 600a and 600b, photoelectric sensors 700a and 700b, and a PLC controller 800.

A working plane 110 is formed in the machine frame 100, and a hot air station 111 and a cold pressure station 112 are divided on the working plane 110. To facilitate movement of the housing 100, a plurality of casters 120 are provided at the bottom of the housing 100.

The profiling bottom die 200 is disposed on the working plane of the frame 100 and is used for placing the pre-assembled airbag cover and emblem assembly.

The station switching transmission mechanism 300 is mounted on the frame 100 and connected to the profiling bottom die 200, and is configured to drive the profiling bottom die 200 to switch between the hot air station 111 and the cold pressure station 112 in a reciprocating manner. In the present embodiment, the station switching transmission mechanism 300 is implemented by a screw transmission mechanism. Of course, the station switching transmission mechanism 300 is not limited to the screw transmission mechanism used in the present embodiment, and may also use an air cylinder or other transmission mechanism.

The hot air blowing tool 400 is installed at the hot air station 111 of the working plane 110, and the servo lifting mechanism 600a is installed on the hot air station 111 of the working plane 110 and used for driving the hot air blowing tool 400 to vertically move up and down. In this embodiment, the hot air blowing tool 400 includes a hot air gun 410, an air guiding pipe 420 and a hot blowing head opening mold 430, the air guiding pipe 420 is installed on the servo lifting mechanism 600a and is driven by the servo lifting mechanism 600a to move vertically up and down, one end of the air guiding pipe 420 is connected with the hot air blowing opening of the hot air gun 410, and the other end is connected with the hot blowing head opening mold 430. The servo lift mechanism 600a may be implemented by a servo cylinder or a servo motor, and the servo lift mechanism 600a is a common component in the art and will not be described herein.

The photoelectric sensor 700a is installed at the hot air station 111 of the working plane 110, and is used for detecting whether the profiling bottom die 200 is moved in place.

The cold pressing tool 500 is installed at the cold pressing station 112 of the working plane 110, and is used for cold pressing the airbag cover and the logo assembly after hot air blowing treatment.

The servo lifting mechanism 600b is installed on the cold pressing station 112 of the working plane 110, and is used for driving the cold pressing tool 500 to vertically move up and down. In this embodiment, the servo lift mechanism 600b may be implemented by a servo cylinder or a servo motor, and the servo lift mechanism 600b is a common component in the art and will not be described herein.

A photo sensor 700b is mounted at the cold pressing station 112 of the work plane 110 for detecting whether the profiling die 200 is moved in place.

The PLC controller 800 is installed in the rack 100 and is respectively connected to the hot air gun 410, the cold press tool 500, the servo elevating mechanisms 600a and 600b, and the photoelectric sensors 700a and 700b of the station switching transmission mechanism 300 and the hot air blowing tool 400, and is configured to control the hot air gun 410, the cold press tool 500, the servo elevating mechanisms 600a and 600b, and the photoelectric sensors 700a and 700b of the station switching transmission mechanism 300 and the hot air blowing tool 400 to work cooperatively. A start button 810 and a stop button 820 respectively connected to the PLC controller 800 are provided at the front side edge of the work plane 110 of the rack 100.

In addition, the profiling bottom die 200 is further provided with a left clamping cylinder 210a and a right clamping cylinder 220b which are respectively connected with the PLC 800, and the left clamping cylinder 210a and the right clamping cylinder 220b are used for clamping a pre-assembled airbag cover cap and a logo assembly which are placed on the profiling bottom die 200, so that the phenomenon that the airbag cover cap and the logo assembly are loosened during hot blowing treatment and cold pressing treatment is prevented.

A safety barrier 130 is respectively installed on the front side, the rear side, the left side, the right side and the top of the rack 100 above the working plane 110, wherein the installation barrier on the front side is provided with a placing and taking window 131. A row of fans 140 are mounted on the safety baffle plate positioned on the top surface, the internal temperature of the rack can be adjusted, and the influence on the quality of workpieces caused by overhigh temperature in the machining process is prevented.

The operation mode of the invention is as follows: the airbag cover and the logo assembly are pre-installed, the front face of the airbag cover is placed downwards into the profiling bottom die 200, and the left clamping cylinder 210a and the right clamping cylinder 220b clamp the workpiece. Then, the station switching transmission mechanism 300 drives the profiling bottom die 200 to convey the workpiece to the hot air station 111, and after the workpiece is conveyed in place, the photoelectric sensor 700a detects whether the workpiece is in place. After the photoelectric sensor 700a detects that the workpiece is in place, the servo lifting mechanism 600a drives the hot air blowing tool 400 to move vertically and downwards, so that the hot air blowing die 430 of the hot air blowing tool 400 is close to the workpiece 10, as shown in fig. 4. At the moment, the hot air gun 410 is heated to 440 ℃, the temperature is kept for 12 seconds, the air volume is 14, after the hot air blowing process is finished, the servo lifting mechanism 600a drives the hot air blowing tool 400 to vertically reset upwards, meanwhile, the station switching transmission mechanism 300 drives the copying bottom die 200 to transport the workpiece to the cold pressing station 112, and after the workpiece is transported in place, the photoelectric sensor 700b detects whether the product is in place. After the photoelectric sensor 700b detects that the workpiece is in place, the servo lifting mechanism 600b drives the cold pressing tool 500 to vertically move downwards, presses the workpiece 10, and keeps cold pressing for 3 seconds, as shown in fig. 5. And after the cold pressing process is finished, the servo lifting mechanism 600b drives the cold pressing tool 500 to vertically reset upwards, the station switching transmission mechanism 300 drives the profiling bottom die 200 to convey the workpiece to the original point position, the left clamping cylinder 210a and the right clamping cylinder 220b are loosened, the riveted workpiece is taken out, and the operation is finished.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.