Ultrasonic welding head for PTFE (Polytetrafluoroethylene) fabric

Abstract

The utility model discloses an ultrasonic welding head for PTFE (polytetrafluoroethylene) fabric, which belongs to the technical field of ultrasonic welding and comprises an ultrasonic generator, a connecting cable is arranged at the bottom of the ultrasonic generator, an energy converter is arranged at the other end of the connecting cable, a connecting plate is arranged between the energy converter and the connecting cable, and an amplitude-change pole is arranged on one side of the energy converter. A special welding head is arranged on the side, away from the energy converter, of the amplitude-change pole, a contact is arranged on one side of the special welding head, and two sets of air spraying holes are formed in the outer side of the special welding head. When the welding device is used, the two sets of gas spraying holes formed in the two sides of the contact can spray out high-pressure gas output from the interior of a small air pump, impurities in a welding area can be removed in an auxiliary mode, the cleanliness of a welding interface is improved, meanwhile, the sprayed-out gas flow can further rapidly cool the contact, and the welding efficiency is improved. The heat of the contact surface of the contact and the to-be-welded material is reduced, the welding effect is further improved, the service life can be prolonged, and the practicability of the device is improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of ultrasonic welding, in particular to an ultrasonic welding head for PTFE fabric. BACKGROUND

[0002] With the progress of industrial technology, ultrasonic welding as an efficient and fast welding method has been widely used in the fields of automobile manufacturing, household appliance production, medical equipment, etc. It not only improves the production efficiency, but also is favored by the market due to its clean and environmentally friendly characteristics.

[0003] The existing welding device is challenged when processing some specific materials, especially those materials that are not easy to deform under heat or have stable chemical properties (such as polytetrafluoroethylene PTFE). Moreover, the welding head cannot be used for a long time because it is in constant high-speed contact with the object to be welded, and foreign matter may affect the welding effect during the welding process. CONTENT OF THE INVENTION

[0004] In view of the deficiencies of the prior art, the application provides an ultrasonic welding head for PTFE fabric, which overcomes the deficiencies of the prior art and aims to solve the problem that the existing welding device in the prior art is challenged when processing some specific materials, especially those materials that are not easy to deform under heat or have stable chemical properties (such as polytetrafluoroethylene PTFE), and the welding head cannot be used for a long time because it is in constant high-speed contact with the object to be welded, and foreign matter may affect the welding effect during the welding process.

[0005] To achieve the above-mentioned purpose, the application provides the following technical scheme: an ultrasonic welding head for PTFE fabric, comprising an ultrasonic generator, a connecting cable is arranged at the bottom of the ultrasonic generator, a transducer is arranged at the other end of the connecting cable, a connecting plate is arranged between the transducer and the connecting cable, a variable amplitude rod is arranged on one side of the transducer, a specially-made welding head is arranged on the side of the variable amplitude rod away from the transducer, a contact head is arranged on one side of the specially-made welding head, two groups of air injection holes are arranged on the outside of the specially-made welding head, the two groups of air injection holes are respectively arranged on the two sides of the contact head, a small air pump is arranged at the top of the ultrasonic generator, the ultrasonic generator and the small air pump are electrically connected, a communication pipe is arranged at the back of the small air pump, the other end of the communication pipe penetrates through the connecting plate and is in communication with the two groups of air injection holes, a connecting lead screw and a sleeve are arranged on the side of the transducer close to the variable amplitude rod, and the variable amplitude rod is threadedly connected with the connecting lead screw.

[0006] By adopting the technical scheme, the ultrasonic generator is arranged, in use, the input alternating current power can be converted into a high-frequency electric signal of 20 kHz or above by the ultrasonic generator, and is transmitted to the transducer through the connecting cable; the transducer is arranged to further convert the electric energy into mechanical vibration of the same frequency, the connecting screw rod and the sleeve are arranged to be connected with the amplitude lever, the amplitude is enhanced and accurately transmitted to the special welding head; the special welding head is designed in a special geometric shape according to different materials to be welded, including a tapered head and a straight tail, the former is used to concentrate energy, and the latter ensures good contact between the welding head and the workpiece, two groups of jet holes arranged on the two sides of the contact head can spray the high-pressure gas output from the inside of the small air pump, which can assist in removing impurities in the welding area, improve the cleanliness of the welding interface, and the jet flow can also quickly cool the contact head, reduce the heat of the contact surface of the contact head and the material to be welded, further improve the welding effect, and also improve the service life and the practicability of the device.

[0007] As a preferred technical scheme of the present application, one side of the ultrasonic generator is provided with a mounting bracket, one side of the mounting bracket is provided with two groups of u-shaped brackets, and the size of the u-shaped bracket matches the size of the transducer.

[0008] By adopting the above technical scheme, the mounting bracket can be quickly stored when the device is placed, and the transducer is placed in the two groups of u-shaped brackets, which can be quickly taken out during use, improving the practicability.

[0009] As a preferred technical scheme of the present application, the front of the ultrasonic generator is provided with a display panel and a control panel.

[0010] By adopting the above technical scheme, the display panel and the control panel can be provided, which can facilitate the supervisor to quickly adjust the numerical value and the parameter of the ultrasonic generator, and further improve the flexibility and convenience of welding.

[0011] As a preferred technical scheme of the present application, the communication pipe and the connecting cable are provided with a line fixing block outside, and the line fixing block is made of rubber.

[0012] By adopting the above technical scheme, the line fixing block is arranged, in use, the connecting cable and the communication pipe can be bundled by the line fixing block, preventing the phenomenon of mutual entanglement and disorder, and improving the practicability of the device.

[0013] As a preferred technical scheme of the present application, the small air pump is provided with a plurality of mounting pads at the bottom, and the mounting pads are fixedly connected with the top of the ultrasonic generator.

[0014] By adopting the technical scheme, the mounting pad is arranged, so that the small air pump and the ultrasonic generator can be more closely connected during use, and the stability during use is ensured.

[0015] As a preferred technical scheme of the present application, the back of the ultrasonic generator is provided with a heat dissipation opening, which is in communication with the inside of the ultrasonic generator, and the outside of the transducer is provided with an anti-skid sleeve.

[0016] By adopting the technical scheme, the heat dissipation opening is arranged, so that the inside of the ultrasonic generator can be cooled during use, and the stability of the ultrasonic generator during long-time operation can be effectively improved. The anti-skid sleeve arranged during use can have an anti-skid effect, and the stability during use is improved.

[0017] As a preferred technical scheme of the present application, the bottom corners of the ultrasonic generator are provided with support blocks, and the four groups of support blocks are made of rubber.

[0018] By adopting the technical scheme, the support blocks are arranged, so that the stability and support of the ultrasonic generator during use can be improved, and the phenomenon of deviation can be prevented.

[0019] As a preferred technical scheme of the present application, the bottoms of the four groups of support blocks are provided with rotating grooves, and the inside of the four groups of rotating grooves is rotatably connected with rollers.

[0020] By adopting the technical scheme, the rotating grooves are arranged, so that the rollers inside can be more convenient when the device is moved, and the practicability of the device is improved.

[0021] The beneficial effects of the present application are as follows:

[0022] 1. The ultrasonic generator is arranged, so that the input alternating current power can be converted into a high-frequency electric signal of 20 kHz or more by the ultrasonic generator during use, and transmitted to the transducer through the connecting cable. The transducer can further convert the electric energy into mechanical vibration of the same frequency. The connecting screw rod and sleeve are connected with the amplitude rod, the amplitude is enhanced, and the special welding head is accurately conducted. The special welding head adopts a special geometric shape design according to the different materials to be welded, including a conical head and a straight tail. The former is used to concentrate energy, and the latter ensures good contact between the welding head and the workpiece. Two groups of jet holes are arranged on both sides of the contact, which can spray the high-pressure gas in the small air pump to assist in removing impurities in the welding area and improve the cleanliness of the welding interface. At the same time, the airflow can quickly cool the contact, reduce the heat of the contact surface with the material to be welded, further improve the welding effect, and prolong the service life and improve the practicability of the device.

[0023] 2. By setting the mounting frame, the device can be quickly stored when placed, and the transducer is placed inside the two groups of u-shaped frames. When in use, it can be quickly taken out, improving the practicability. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall front structure of the application;

[0025] Figure 2 It is a schematic diagram of the transducer structure of the application;

[0026] Figure 3 It is a schematic diagram of the overall back structure of the application;

[0027] Figure 4 It is a schematic diagram of the overall bottom structure of the application.

[0028] In the figure: 1, ultrasonic generator; 101, display panel; 102, control panel; 103, connecting cable; 104, heat dissipation port; 2, transducer; 201, connecting screw rod; 202, sleeve; 203, anti-skid sleeve; 204, connecting plate; 3, amplitude rod; 4, special welding head; 401, contact; 402, air jet hole; 5, small air pump; 501, connecting pipe; 502, mounting pad; 6, circuit fixing block; 7, mounting frame; 701, u-shaped frame; 8, supporting block; 801, rotating groove; 802, roller. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, not all the embodiments. Based on the embodiments in the application, all other embodiments obtained by those of ordinary skill in the art without creative labor are within the scope of protection of the application.

[0030] REFERENCE Figures 1-4The utility model provides an ultrasonic welding head for PTFE fabric, including ultrasonic generator 1, the bottom of ultrasonic generator 1 is provided with connecting cable 103, the other end of connecting cable 103 is provided with transducer 2, the transducer 2 and connecting cable 103 between being provided with connecting plate 204, the one side of transducer 2 is provided with amplitude transformer 3, the one side of amplitude transformer 3 away from transducer 2 is provided with special welding head 4, the one side of special welding head 4 is provided with contact 401, the outside of special welding head 4 is provided with two groups of air jet hole 402, two groups of air jet hole 402 are located respectively at the both sides of contact 401, the top of ultrasonic generator 1 is provided with small air pump 5, and ultrasonic generator 1 and small air pump 5 are electrically connected, the back of small air pump 5 is provided with communicating pipe 501, the other end of communicating pipe 501 penetrates connecting plate 204 and is communicated with two groups of air jet hole 402, and the one side of transducer 2 close to amplitude transformer 3 is provided with connecting lead screw 201 and sleeve 202, and amplitude transformer 3 is threadedly connected with connecting lead screw 201. The front of ultrasonic generator 1 is provided with display panel 101 and control panel 102.

[0031] By setting ultrasonic generator 1, when using, the input AC power can be converted into high-frequency electric signal above 20kHz by ultrasonic generator 1, and is transmitted to transducer 2 through connecting cable 103. The transducer 2 can further convert the electric energy into mechanical vibration of the same frequency. The connecting lead screw 201 and sleeve 202 are connected with the amplitude transformer 3 to enhance the amplitude and accurately conduct to the special welding head 4. The special welding head 4 has a special geometric shape design according to the different materials to be welded, including a tapered head and a straight tail. The former is used to concentrate energy, and the latter ensures good contact between the welding head and the workpiece. The two groups of air jet hole 402 on the both sides of the contact 401 can spray the high-pressure gas output from the inside of the small air pump 5 to assist in removing impurities in the welding area, improve the cleanliness of the welding interface, and the airflow can also quickly cool the contact 401, reduce the heat of the contact surface between the contact 401 and the material to be welded, further improve the welding effect, and also improve the service life and the practicability of the device. By setting the display panel 101 and the control panel 102, the supervisor can quickly adjust the numerical value and the parameter of the ultrasonic generator 1, further improve the flexibility and convenience of the welding.

[0032] Refer to Figure 1The side of the ultrasonic generator 1 is provided with a mounting rack 7, one side of the mounting rack 7 is provided with two groups of u-shaped racks 701, the size of the u-shaped rack 701 matches the size of the transducer 2; the outside of the communication pipe 501 and the connecting cable 103 is provided with a line fixing block 6, the line fixing block 6 is made of rubber material; the back of the ultrasonic generator 1 is provided with a heat dissipation port 104, the heat dissipation port 104 is communicated with the inside of the ultrasonic generator 1, and the outside of the transducer 2 is provided with an anti-skid sleeve 203; by arranging the mounting rack 7, the transducer 2 can be quickly placed in the two groups of u-shaped racks 701 when the device is placed, and it can be quickly taken out when used, improving the practicability; by arranging the line fixing block 6, the connecting cable 103 and the communication pipe 501 can be bundled by the line fixing block 6 when used, preventing mutual entanglement and disorder, and improving the practicability of the device; by arranging the heat dissipation port 104, the inside of the ultrasonic generator 1 can be cooled when used, which can effectively improve the stability of the ultrasonic generator 1 during long-time operation; the anti-skid sleeve 203 can prevent slipping when used, improving the stability during use.

[0033] Referring to Figure 1 The bottom of the small air pump 5 is provided with a plurality of mounting pads 502, and the mounting pads 502 are fixedly connected with the top of the ultrasonic generator 1; by arranging the mounting pad 502, the small air pump 5 and the ultrasonic generator 1 can be more closely connected when used, ensuring the stability during use; the bottom corners of the ultrasonic generator 1 are provided with support blocks 8, and the four support blocks 8 are made of rubber material; by arranging the support block 8, the stability and supportability of the ultrasonic generator 1 during use can be improved, and the phenomenon of deviation can be prevented; the bottom of each of the four support blocks 8 is provided with a rotating groove 801, and the inside of each of the four rotating grooves 801 is rotatably connected with a roller 802; by arranging the rotating groove 801, the internal roller 802 can be more convenient when moving the device, improving the practicability of the device.

[0034] Working principle: by setting the ultrasonic generator 1, in use, can be converted into 20kHz or more high frequency electrical signal through the ultrasonic generator 1 to input AC power, via the transmission cable 103 to the transducer 2; the transducer 2 can be further converted into the same frequency mechanical vibration, through the setting of the connecting screw rod 201 and sleeve 202 and amplitude lever 3 connected, enhance the amplitude and accurate transmission to the special welding head 4; special welding head 4 according to the different materials to be welded, especially for polytetrafluoroethylene, adopts special geometric shape design, including tapered head and straight tail, the former is used to concentrate energy, the latter ensures the good contact between the welding head and the workpiece, the two sides of the contact 401 set up two groups of jet hole 402, can be sprayed out of the high pressure gas output by the small air pump 5, can help to remove the impurities in the welding area, improve the cleanliness of the welding interface, at the same time, the jet flow can also quickly cool the contact 401, reduce the heat of the contact 401 and the contact surface of the material to be welded, further improve the welding effect, also can improve the service life, improve the practicability of the device, through the setting of the mounting bracket 7, can be quickly stored when the device is placed, the transducer 2 is placed in the two groups of u-shaped frame 701, in use, can be quickly taken out, improve the practicability;

[0035] Among them, by setting the display panel 101 and the control panel 102, the supervisor can quickly adjust the numerical value and parameter of the ultrasonic generator 1, further improve the flexibility and convenience of welding, by setting the line fixing block 6, in use, the connection cable 103 and the communication pipe 501 can be bundled by the line fixing block 6, to prevent the phenomenon of mutual entanglement, improve the practicability of the device;

[0036] At the same time, by setting the mounting pad 502, in use, the small air pump 5 and the ultrasonic generator 1 can be more closely connected, to ensure the stability in use;

[0037] In addition, by setting the heat dissipation port 104, in use, the inside of the ultrasonic generator 1 can be cooled, which can effectively improve the stability of the ultrasonic generator 1 in long time operation; the anti-skid sleeve 203 can prevent slipping and improve the stability in use; by setting the support block 8, the stability and support of the ultrasonic generator 1 in use can be improved, to prevent the phenomenon of deviation; by setting the rotating groove 801, the internal roller 802 can be more convenient when moving the device, improving the practicability of the device.

[0038] The above merely describes the preferred embodiments of the present application, and is not intended to limit the present application. Although the present application is described in detail with reference to the foregoing embodiments, modifications to the foregoing embodiments or equivalent replacements to some technical features thereof can be made by those skilled in the art. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. Ultrasonic welding head for PTFE fabrics, comprising an ultrasonic generator (1), characterized in that, The bottom of the ultrasonic generator (1) is provided with a connecting cable (103), the other end of the connecting cable (103) is provided with a transducer (2), a connecting plate (204) is arranged between the transducer (2) and the connecting cable (103), one side of the transducer (2) is provided with a variable amplitude rod (3), the side away from the transducer (2) of the variable amplitude rod (3) is provided with a special welding head (4), one side of the special welding head (4) is provided with a contact head (401), the outer side of the special welding head (4) is provided with two groups of air injection holes (402), two groups of the air injection holes (402) are located on the two sides of the contact head (401) respectively, the top of the ultrasonic generator (1) is provided with a small air pump (5), the ultrasonic generator (1) and the small air pump (5) are electrically connected, the back of the small air pump (5) is provided with a communication pipe (501), the other end of the communication pipe (501) penetrates through the connecting plate (204) and is in communication with two groups of the air injection holes (402), one side of the transducer (2) close to the variable amplitude rod (3) is provided with a connecting lead screw (201) and a sleeve (202), the variable amplitude rod (3) and the connecting lead screw (201) are threadedly connected.

2. The ultrasonic horn for PTFE fabric according to claim 1, wherein One side of the ultrasonic generator (1) is provided with a mounting rack (7), one side of the mounting rack (7) is provided with two groups of u-shaped racks (701), the size of the u-shaped rack (701) matches the size of the transducer (2).

3. The ultrasonic horn for PTFE fabric according to claim 1, characterized by The front of the ultrasonic generator (1) is provided with a display panel (101) and a control panel (102).

4. The ultrasonic horn for PTFE fabric according to claim 1, wherein The outer sides of the communication pipe (501) and the connecting cable (103) are provided with line fixing blocks (6), the line fixing blocks (6) are made of rubber.

5. The ultrasonic horn for PTFE fabric according to claim 1, wherein The bottom of the small air pump (5) is provided with a plurality of mounting pads (502), and the plurality of mounting pads (502) are fixedly connected with the top of the ultrasonic generator (1).

6. The ultrasonic horn for PTFE fabric according to claim 1, wherein The back of the ultrasonic generator (1) is provided with a heat dissipation opening (104), the heat dissipation opening (104) is in communication with the inside of the ultrasonic generator (1), and the outside of the transducer (2) is provided with an anti-skid sleeve (203).

7. The ultrasonic horn for PTFE fabric according to claim 1, wherein The bottom of the ultrasonic generator (1) is provided with a plurality of supporting blocks (8), and the plurality of supporting blocks (8) are made of rubber.

8. The ultrasonic horn for PTFE fabric according to claim 7, characterized by The bottom of the plurality of supporting blocks (8) is provided with a rotating groove (801), and the inside of the plurality of rotating grooves (801) is rotatably connected with a plurality of rollers (802).

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