Automatic ultrasonic welding device for fiber cord fabric

Abstract

The utility model relates to the technical field of welding equipment, in particular to an automatic ultrasonic welding device for fiber cord fabric. The device comprises a rack, a rotating platform, a downward pressing mechanism and an ultrasonic welding assembly, the rotating platform is rotationally installed on the rack, the downward pressing mechanism is arranged on the rotating platform, adopts a pressing plate air cylinder as a power element and is used for pressing fiber cord fabric, and the ultrasonic welding assembly is arranged on the rotating platform. The ultrasonic welding assembly adopts an ultrasonic welding head as a welding element and is used for welding the fiber cord fabric. According to the utility model, the cord fabrics are welded in an ultrasonic welding manner, so that the overlapping size between the cord fabrics can be reduced, the effects of reducing material waste and economic loss are achieved, and meanwhile, as the overlapping size between the cord fabrics is reduced, the dynamic balance and uniformity of the manufactured finished tire can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of welding equipment, in particular to an ultrasonic automatic welding device for fiber cord fabric. Background Technique

[0002] In the production process of tires, a fiber cord fabric layer needs to be provided on the tires. It is the skeleton of a pneumatic tire and is composed of several layers of plastic cord fabric laminated together. These cord fabrics are usually made of cord materials with high strength, low elongation rate, and excellent fatigue resistance, such as cotton, rayon, polyamide, polyester, aromatic polyamide, or steel wire, etc. It mainly bears most of the loads on the tires, including load pressure, internal air pressure, and lateral shear force. At the same time, it protects the tire rubber from stretching, enhances the strength and stability of the tires, etc.

[0003] When welding existing tire fiber cord fabrics, both sides of two cord fabrics are overlapped manually, and the two cord fabrics are preliminarily spliced together by the way of superposition and pasting, and then the two cord fabrics are welded by high-temperature welding. However, in the process of using this high-temperature welding method, one side of the two cord fabrics stacked together needs to overlap a large area. The overlapping area of the two cord fabrics will cause waste of some materials. In the case of a large number of processing, the wasted materials will accumulate and cause certain economic losses. Moreover, the cord fabrics welded by being stacked together are prone to problems with the dynamic balance of the produced tires due to the too large overlapping area. Content of the Utility Model

[0004] In view of the problems in the background technique, an ultrasonic automatic welding device for fiber cord fabric is proposed.

[0005] The utility model provides an ultrasonic automatic welding device for fiber cord fabric, which includes a frame. A rotating platform is rotatably installed on the frame. A pressing mechanism is arranged on the rotating platform. The pressing mechanism uses a pressing plate cylinder as a power element to press the fiber cord fabric. An ultrasonic welding assembly is arranged on the rotating platform. The ultrasonic welding assembly uses an ultrasonic welding head as a welding element to weld the fiber cord fabric.

[0006] Preferably, the pressing mechanism is composed of a pressing component and an adjusting component. The pressing component includes a pressing plate frame rotatably installed on the rotating platform. A pressing plate is installed on the pressing plate frame. The adjusting component includes a pressing plate cylinder rotatably installed on the rotating platform. The telescopic shaft of the pressing plate cylinder is rotatably connected to the pressing plate frame.

[0007] Preferably, an adjusting through groove is opened on the frame. A splicing panel is installed on the rotating platform. The outer diameter of the splicing panel is the same as the inner diameter of the adjusting through groove. A welding through groove is opened on the splicing panel, and the welding through groove is adapted to the ultrasonic welding head.

[0008] Preferably, the ultrasonic welding assembly consists of a horn, a transducer, and an ultrasonic welding head. The horn is installed on a rotating platform, the transducer is installed on the horn, and the ultrasonic welding head is installed on the horn.

[0009] Preferably, a heavy-duty hollow rotating platform is installed on the frame. The rotating platform is connected to the heavy-duty hollow rotating platform, and the rotating platform is driven to rotate by the heavy-duty hollow rotating platform.

[0010] Compared with the prior art, the utility model has the following beneficial technical effects:

[0011] By welding the cord fabric through ultrasonic welding, the overlapping size between the cord fabrics can be reduced, thereby achieving the effect of reducing material waste and economic losses. At the same time, since the overlapping size between the cord fabrics becomes smaller, the dynamic balance and uniformity of the produced finished tire can be improved, and the joint strength between the cord fabrics welded by ultrasonic welding is relatively high and resistant to stretching;

[0012] Through the rotational setting between the rotating platform and the frame, the welding angle of the ultrasonic welding assembly can be better adjusted, so as to adapt to different cord fabric welding angle requirements, improve the usage range of the welding device, and under the action of the pressing plate, the placement stability of the cord fabric during the welding process can be ensured, and the welding effect of the cord fabric can be guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural diagram of the utility model;

[0014] Figure 2 is a schematic structural diagram of the rotating platform of the utility model;

[0015] Figure 3 is a schematic structural diagram of the ultrasonic welding assembly of the utility model;

[0016] Figure 4 is a schematic structural diagram of the splicing panel of the utility model.

[0017] Reference numerals: 1, frame; 2, rotating platform; 3, heavy-duty hollow rotating platform; 4, pressing plate frame; 5, pressing plate; 6, pressing plate cylinder; 7, horn; 8, transducer; 9, ultrasonic welding head; 10, splicing panel; 11, welding through groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] As Figures 1 - 4 shown, a fiber cord fabric ultrasonic automatic welding device proposed by the utility model includes: a frame 1, a rotating platform 2, a pressing mechanism, and an ultrasonic welding assembly.

[0019] As Figures 1 - 4As shown in the figure, the rotating platform 2 is rotatably installed on the frame 1. A heavy-duty hollow rotating platform 3 is installed on the frame 1. The rotating platform 2 is connected to the heavy-duty hollow rotating platform 3. The heavy-duty hollow rotating platform 3 drives the rotating platform 2 to rotate. The pressing mechanism is arranged on the rotating platform 2. The pressing mechanism uses a pressing plate cylinder 6 as a power element for pressing the fiber cord fabric. The pressing mechanism is composed of a pressing component and an adjusting component. The pressing component includes a pressing plate frame 4 rotatably installed on the rotating platform 2. A pressing plate 5 is installed on the pressing plate frame 4. The adjusting component includes a pressing plate cylinder 6 rotatably installed on the rotating platform 2. The telescopic shaft of the pressing plate cylinder 6 is rotatably connected to the pressing plate frame 4. The ultrasonic welding component is arranged on the rotating platform 2. The ultrasonic welding component uses an ultrasonic welding head 9 as a welding element for welding the fiber cord fabric. The ultrasonic welding component consists of a horn 7, a transducer 8 and an ultrasonic welding head 9. The horn 7 is installed on the rotating platform 2. The transducer 8 is installed on the horn 7. The ultrasonic welding head 9 is installed on the horn 7.

[0020] As Figure 1 and Figure 4 shown in the figure, an adjusting through groove is provided on the frame 1. A splicing panel 10 is installed on the rotating platform 2. The outer diameter of the splicing panel 10 is the same as the inner diameter of the adjusting through groove. A welding through groove 11 is provided on the splicing panel 10. The welding through groove 11 is adapted to the ultrasonic welding head 9.

[0021] The working principle of ultrasonic welding: The ultrasonic generator converts the 50Hz current into electrical energy of 20 - 40KHz, and then the transducer converts it into mechanical vibration of the same frequency. The amplitude modulator (equivalent to the horn in this embodiment) then transfers the mechanical vibration to the welding head. The welding head transfers the received 20 - 40KHz high-frequency vibration energy to the joint of the workpiece to be welded, causing the surface of the workpiece to also generate high-frequency vibration. When the vibration amplitude of the workpiece surface is large enough, frictional heat will be generated, melting the surface material of the workpiece, thereby bonding the two workpieces together to complete the welding;

[0022] The ultrasonic welding method is a method that uses high-frequency vibration waves to transfer to the surfaces of two objects to be welded. Under pressure, the surfaces of the two objects rub against each other to form a fusion between the molecular layers, thereby achieving welding. This welding method can achieve a tight combination of materials at the microscopic level, thereby improving the strength of the joint.

[0023] In this embodiment, main conveyor belts are provided on both sides of the frame 1 for conveying the cord fabric;

[0024] Before working, it is necessary to start the heavy-duty hollow rotating platform 3 according to the welding angle requirement of the cord fabric to drive the entire rotating platform to rotate, and then drive the pressing mechanism and the ultrasonic welding component to rotate to a suitable angle to meet the welding angle requirement of the cord fabric;

[0025] During operation, the cord fabric is conveyed through the main conveyor belt. During the welding process, only about 1 mm of the overlapping sides of the two cord fabrics to be welded need to overlap for the joint of the two cord fabrics. After that, the pressing plate cylinder 6 is activated to push the pressing plate frame 4 to rotate, and then the pressing plate 5 is pressed down to press and fix the overlapping part of the two cord fabrics. Subsequently, the ultrasonic welding head 9 can be used to perform ultrasonic welding on the cord fabric. After the welding is completed, the pressing plate cylinder 6 is activated to drive the pressing plate 5 to rise and return to the initial state. Subsequently, the welded cord fabric is driven out of the frame 1 by the main conveyor belt, and then the ultrasonic welding operation of the cord fabric is completed.

[0026] The embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made without departing from the spirit of the present invention within the scope of knowledge possessed by those skilled in the art to which the present invention pertains.

Claims

1. A fiber cord ultrasonic automatic welding device, comprising: The frame (1) is characterized in that a rotating platform (2) is rotatably mounted on the frame (1), a pressing mechanism is arranged on the rotating platform (2), the pressing mechanism uses a pressing plate cylinder (6) as a power element for pressing the fiber curtain, and an ultrasonic welding assembly is arranged on the rotating platform (2), the ultrasonic welding assembly uses an ultrasonic welding head (9) as a welding element for welding the fiber curtain.

2. The fiber cord ultrasonic automatic welding device according to claim 1, characterized in that: The pressing mechanism is composed of a pressing assembly and an adjusting assembly. The pressing assembly includes a pressing plate frame (4) rotatably mounted on a rotating platform (2), a pressing plate (5) being mounted on the pressing plate frame (4), and the adjusting assembly includes a pressing plate cylinder (6) rotatably mounted on the rotating platform (2), a telescopic shaft of the pressing plate cylinder (6) being rotatably connected to the pressing plate frame (4).

3. The fiber cord ultrasonic automatic welding device according to claim 1, characterized in that: An adjusting slot is provided on the frame (1), a splicing panel (10) is mounted on the rotating platform (2), the outer diameter of the splicing panel (10) is the same as the inner diameter of the adjusting slot, a welding slot (11) is provided on the splicing panel (10), and the welding slot (11) is adapted to the ultrasonic welding head (9).

4. The fiber cord ultrasonic automatic welding device according to claim 1, characterized in that: The ultrasonic welding assembly comprises a horn (7), a transducer (8) and an ultrasonic welding head (9); the horn (7) is mounted on the rotating platform (2); the transducer (8) is mounted on the horn (7); and the ultrasonic welding head (9) is mounted on the horn (7).

5. The fiber cord ultrasonic automatic welding device according to claim 1, characterized in that: A heavy-load hollow rotating platform (3) is installed on the frame (1), and the rotating platform (2) is connected to the heavy-load hollow rotating platform (3), and the rotating platform (2) is driven to rotate by the heavy-load hollow rotating platform (3).

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