Rotating disc type ultrasonic welding device

Abstract

The utility model relates to the technical field of ultrasonic welding, in particular to a rotating disc type ultrasonic welding device which comprises a machine frame and a conveying belt. A plurality of sets of ultrasonic welding assemblies and bottom die assemblies in one-to-one correspondence with the ultrasonic welding assemblies are arranged on the rotary disc at equal intervals in an annular array mode. Each ultrasonic welding assembly comprises a mounting base, an energy converter and a welding head, the mounting bases are fixedly arranged on the rotating disc, annular supporting pieces are arranged on the two sides of each mounting base respectively, and a circular structure surrounding the rotating disc is formed among the annular supporting pieces of the ultrasonic welding assemblies; the conveying belt is arranged on a circular structure formed by the annular supporting pieces in a surrounding mode. One side of the workpiece is clamped through the conveying belt, and the linear speed of the conveying belt is the same as that of the annular supporting piece, so that relative sliding between the workpiece and the annular supporting piece is prevented, and the welding precision is improved.

Description

Technical Field

[0001] The utility model relates to a turntable type ultrasonic welding device, belonging to the technical field of ultrasonic welding. Background Art

[0002] Straight products such as sanitary napkins and diapers are continuously produced in the form of rolls during the production process. In one of the links, ultrasonic welding technology is required to weld and fuse non-woven materials, fiber materials or plastics, so that different layers of materials are partially or completely welded into one.

[0003] Prior art "Application No.: CN2024113314284" discloses a multi-station ultrasonic welding device, which includes a frame, a rotating shaft is rotatably arranged on the frame, a turntable is arranged on the rotating shaft, a plurality of ultrasonic welding components are slidably arranged in an evenly spaced annular array on the turntable, and a plurality of bottom mold components corresponding to the ultrasonic welding components are arranged in an evenly spaced annular array on the turntable; the product is multi-station welded by the ultrasonic welding components on the turntable to increase the welding speed. However, the above-mentioned prior art has the following defects: after the workpiece moves to the outer edge of the turntable, although the linear speed can be close to the linear speed of the outer edge of the turntable, the workpiece and the outer edge of the turntable will still slide relative to each other with a certain error, affecting the welding accuracy; at the same time, the bottom mold component does not have a shock absorbing function, and the ultrasonic welding component is prone to wear after long-term vibration contact with the bottom mold component, affecting the service life of the ultrasonic welding component.

[0004] Therefore, how to provide a turntable type ultrasonic welding device with high welding precision and long service life is the research purpose of the utility model. Utility Model Content

[0005] In view of the deficiencies of the above-mentioned technology, the utility model provides a turntable ultrasonic welding device, which clamps one side of the workpiece through a conveyor belt, and the linear speed of the conveyor belt is the same as the linear speed of the annular support, thereby preventing relative sliding between the workpiece and the annular support and improving the welding accuracy; at the same time, a shock-absorbing airbag is arranged in the bottom mold assembly to reduce the wear caused by the vibration contact between the ultrasonic welding assembly and the bottom mold assembly, thereby increasing the service life of the ultrasonic welding assembly.

[0006] In order to solve the existing technical problems, the technical solution adopted by the utility model is:

[0007] A turntable type ultrasonic welding device comprises a frame and a conveyor belt, wherein a turntable is rotatably arranged at the front end of the frame, and a plurality of groups of ultrasonic welding components and bottom mold components corresponding to the ultrasonic welding components are arranged in an evenly spaced annular array on the turntable;

[0008] Each group of the ultrasonic welding components comprises a mounting seat, a transducer and a welding head. The mounting seat is fixedly mounted on the turntable, and an annular support is respectively arranged on both sides thereof. The annular support of several groups of the ultrasonic welding components forms a circular structure surrounding the outer periphery of the turntable. The transducer is arranged on the inner side of the mounting seat, and the welding head is connected to the output end of the transducer.

[0009] Each group of the bottom mold assembly comprises a base, a flip seat, a flip motor, a shock-absorbing airbag and a bottom mold, wherein the base is fixedly arranged on the turntable, the flip seat is rotatably arranged on the base, the flip motor is fixedly arranged on one side of the base, and its motor shaft drives the flip seat to flip through a connecting rod, the shock-absorbing airbag is arranged on the inner side of the flip seat, and the bottom mold is slidably arranged on the flip seat and connected to the shock-absorbing airbag;

[0010] The conveyor belt is arranged around the circular structure composed of the annular support members, and the circular structure composed of the annular support members is provided with an opening structure for feeding and discharging materials.

[0011] Furthermore, the turntable is mounted on the frame via a rotating shaft, the other end of the rotating shaft is connected to a rotating motor via a gear transmission, and the rotating motor is fixed on the frame.

[0012] Furthermore, the circumference of the circular structure formed by the annular support member is located between the welding head and the bottom mold.

[0013] Furthermore, the mounting seat is fixedly arranged at the front end of the turntable, and the base is fixedly arranged at the rear end of the turntable and corresponds to the mounting seat one by one.

[0014] Furthermore, the turntable and the conveyor belt rotate in the same direction, and the conveyor belt is configured as a circulating rotary conveyor belt driven by an external motor.

[0015] The beneficial effects of the utility model are: 1. One side of the workpiece is clamped by a conveyor belt, and the linear speed of the conveyor belt is the same as the linear speed of the annular support, thereby preventing relative sliding between the workpiece and the annular support and improving welding accuracy; 2. A shock-absorbing airbag is arranged in the bottom mold assembly to reduce the wear caused by vibration contact between the ultrasonic welding assembly and the bottom mold assembly, thereby improving the service life of the ultrasonic welding assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model.

[0017] Figure 2 It is a side view of the utility model.

[0018] Figure 3It is one of the local structural diagrams of the utility model.

[0019] Figure 4 This is the second partial structural diagram of the utility model.

[0020] Figure 5 It is a structural schematic diagram of the bottom mold assembly of the utility model.

[0021] Figure 6 It is a partial structural diagram of the bottom mold assembly of the utility model.

[0022] Figure 7 It is a rotation schematic diagram of the conveyor belt of the utility model.

[0023] Among them: frame 1, conveyor belt 2, turntable 3, ultrasonic welding assembly 4, bottom mold assembly 5, mounting seat 41, transducer 42, welding head 43, annular support 44, base 51, flip seat 52, flip motor 53, shock-absorbing airbag 54, bottom mold 55, connecting rod 56, rotating shaft 6, rotating motor 7. DETAILED DESCRIPTION

[0024] In order to make those skilled in the art better understand the technical solution of the utility model, the following Figure 1-7 The utility model is further analyzed.

[0025] like Figure 1-Figure 7 As shown, a turntable type ultrasonic welding device comprises a frame 1 and a conveyor belt 2, a turntable 3 is rotatably arranged at the front end of the frame 1, and a plurality of groups of ultrasonic welding components 4 and bottom mold components 5 corresponding to the ultrasonic welding components 4 are arranged in an evenly spaced annular array on the turntable 3;

[0026] Each group of the ultrasonic welding components 4 includes a mounting seat 41, a transducer 42 and a welding head 43. The mounting seat 41 is fixed on the turntable 3, and an annular support member 44 is provided on both sides thereof. The function of the annular support member 44 is to support the workpiece. A circular structure surrounding the outer periphery of the turntable 3 is formed between the annular support members 44 of several groups of the ultrasonic welding components 4. The transducer 42 is arranged on the inner side of the mounting seat 41, and the welding head 43 is connected to the output end of the transducer 42.

[0027] Each group of the bottom mold assembly 5 includes a base 51, a flip seat 52, a flip motor 53, a shock-absorbing airbag 54 and a bottom mold 55. The base 51 is fixedly arranged on the turntable 3, the flip seat 52 is rotatably arranged on the base 51, the flip motor 53 is fixedly arranged on one side of the base 51, and its motor shaft drives the flip seat 52 to flip through a connecting rod 56. The shock-absorbing airbag 54 is arranged on the inner side of the flip seat 52, and the bottom mold 55 is slidably arranged on the flip seat 52 and connected to the shock-absorbing airbag 54. During welding, the flip motor 53 drives the flip seat 52 to flip, so that the bottom mold 55 contacts the welding head 43. The shock-absorbing airbag 54 is used to reduce the wear caused by the vibration contact between the welding head 43 and the bottom mold 55, thereby improving the service life of the ultrasonic welding assembly 4;

[0028] The conveyor belt 2 is arranged around the circular structure composed of the annular support member 44. The circular structure composed of the annular support member 44 is provided with an opening structure for feeding and discharging materials. The workpiece enters or leaves the annular support member 44 from the opening structure.

[0029] In this embodiment, preferably, the turntable 3 is mounted on the frame 1 via a rotating shaft 6 , the other end of the rotating shaft 6 is connected to a rotating motor 7 via a gear transmission, and the rotating motor 7 is fixed on the frame 1 .

[0030] In this embodiment, preferably, the circumference of the circular structure formed by the annular support member 44 is located between the welding head 43 and the bottom mold 55 to ensure that the workpiece on the annular support member 44 can pass through between the welding head 43 and the bottom mold 55 .

[0031] In this embodiment, preferably, the mounting seat 41 is fixedly disposed at the front end of the turntable 3 , and the base 51 is fixedly disposed at the rear end of the turntable 3 and corresponds one-to-one with the mounting seat 41 .

[0032] In this embodiment, preferably, the turntable 3 and the conveyor belt 2 rotate in the same direction, and the conveyor belt 2 is configured as a circulating rotary conveyor belt driven by an external motor.

[0033] When the utility model is used, the workpiece enters the annular support member 44 from the opening structure, and then the conveyor belt 2 and the annular support member 44 clamp and convey the edge of the workpiece; at the same time, the ultrasonic welding assembly 4 and the bottom mold assembly 5 rotate clockwise following the turntable 3. When the workpiece passes between the welding head 43 and the bottom mold 55, the flip motor 53 drives the flip seat 52 to flip, so that the bottom mold 55 is closed and contacted with the welding head 43, and the welding head 43 and the bottom mold 55 cooperate to weld the workpiece. When the bottom mold 55 is closed and contacted with the welding head 43, it will not contact the conveyor belt 2, that is, the part where the bottom mold 55 and the welding head 43 weld the workpiece does not overlap or conflict with the part where the conveyor belt 2 clamps and conveys the workpiece, so the conveyor belt 2 clamps and conveys the workpiece, and does not affect the normal welding of the workpiece. At this time, the welding head 43 and the bottom mold 55 weld the workpiece while rotating synchronously with the workpiece until the set welding time is reached, and the flip motor 53 drives the flip seat 52 to flip in the opposite direction, so that the bottom mold 55 leaves the welding head 43 and stops welding. The welding time of the workpiece can be controlled by the rotation speed of the turntable 3 and the conveyor belt 2; specifically, the faster the rotation speed of the turntable 3 and the conveyor belt 2, the shorter the time the workpiece stays on the annular support 44, and the shorter the welding time, and vice versa.

[0034] The technical solution provided by the present application is introduced in detail above. The principles and implementation methods of the present application are explained in this article using embodiments. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for general technicians in this field, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A turntable type ultrasonic welding device, characterized in that: It comprises a frame (1) and a conveyor belt (2); a turntable (3) is rotatably provided at the front end of the frame (1); a plurality of groups of ultrasonic welding assemblies (4) and bottom mold assemblies (5) corresponding to the ultrasonic welding assemblies (4) are arranged in an evenly spaced annular array on the turntable (3); Each group of the ultrasonic welding components (4) comprises a mounting seat (41), a transducer (42) and a welding head (43); the mounting seat (41) is fixedly mounted on the turntable (3), and an annular support member (44) is provided on both sides thereof; a circular structure surrounding the outer periphery of the turntable (3) is formed between the annular support members (44) of the plurality of groups of the ultrasonic welding components (4); the transducer (42) is arranged on the inner side of the mounting seat (41), and the welding head (43) is connected to the output end of the transducer (42); Each group of the bottom mold assembly (5) comprises a base (51), a flip seat (52), a flip motor (53), a shock-absorbing airbag (54) and a bottom mold (55); the base (51) is fixedly arranged on the turntable (3); the flip seat (52) is rotatably arranged on the base (51); the flip motor (53) is fixedly arranged on one side of the base (51); the motor shaft drives the flip seat (52) to flip via a connecting rod (56); the shock-absorbing airbag (54) is arranged on the inner side of the flip seat (52); and the bottom mold (55) is slidably arranged on the flip seat (52) and is connected to the shock-absorbing airbag (54); The conveyor belt (2) is arranged around a circular structure formed by the annular support member (44), and an opening structure for feeding and discharging materials is provided on the circular structure formed by the annular support member (44).

2. A turntable type ultrasonic welding device according to claim 1, characterized in that: The rotating disk (3) is mounted on the frame (1) via a rotating shaft (6); the other end of the rotating shaft (6) is connected to a rotating motor (7) via a gear transmission; the rotating motor (7) is fixedly mounted on the frame (1).

3. A turntable type ultrasonic welding device according to claim 1, characterized in that: The circumference of the circular structure formed by the annular support member (44) is located between the welding head (43) and the bottom mold (55).

4. A turntable type ultrasonic welding device according to claim 1, characterized in that: The mounting seat (41) is fixedly arranged at the front end of the turntable (3), and the base (51) is fixedly arranged at the rear end of the turntable (3) and corresponds one-to-one with the mounting seat (41).

5. The rotary disk type ultrasonic welding device according to claim 1, characterized in that: The turntable (3) and the conveyor belt (2) rotate in the same direction, and the conveyor belt (2) is configured as a circulating rotary conveyor belt driven by an external motor.

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