Anti-scald safe ultrasonic hot melting device and method

Abstract

The invention relates to an anti-scald safe ultrasonic hot melting device and method. The anti-scald safe ultrasonic hot melting device comprises an ultrasonic assembly, the side wall of a mounting plate is connected with a sliding rail and a driving part, the sliding rail is slidably connected with a sliding plate, the output end of the driving part is connected with the sliding plate, the sliding plate is connected with a transducer, an ultrasonic generator is connected with the transducer, and the transducer is connected with an amplitude-change pole in a matched mode. The end, away from the transducer, of the amplitude-change pole is connected with a guide seat, a guide groove is formed in the side wall of the guide seat, the side, away from the transducer, of the guide seat is connected with a pressing plate, the width and the depth of the guide groove are gradually increased in the direction close to the transducer, and the protective cover is provided with a protruding block which is in sliding connection with the guide groove. An air blowing member; the air duct seat is provided with an air duct, and the air outlet end of the air blowing piece is communicated with the air duct; the end of the protective cover can abut against the positioning assembly. According to the anti-scald safe ultrasonic hot melting device and method, workers can be prevented from being scalded, and meanwhile noise of the protective cover is reduced.

Description

Technical Field

[0001] This invention relates to the field of ultrasonic heat-melting device technology, and in particular to a safe ultrasonic heat-melting device and method for preventing burns. Background Technology

[0002] Ultrasonic heat fusion is a process that uses high-frequency mechanical vibration to rapidly generate heat, melt, and solidify thermoplastic contact surfaces through friction, thereby achieving permanent welding. Its core is to convert electrical energy into high-frequency mechanical vibration through ultrasonic equipment, which is then transmitted to the contact surfaces of plastic workpieces. Frictional heat is used to melt the plastic at the contact surfaces, and a strong joint is formed after cooling under pressure.

[0003] The ultrasonic hot-melting apparatus and method disclosed in CN105946221B includes an enclosed heating assembly and an ultrasonic forming assembly. The enclosed heating assembly includes a heating mold, the bottom of which is provided with one or more heating heads. Each heating head is a hollow, closed cylindrical body. The size of the hollow part inside the cylindrical body matches the size of the external dimensions of the hot-melting part of the workpiece. Before preheating, the cylindrical body is placed around the hot-melting part of the workpiece from top to bottom for enclosed preheating. The ultrasonic forming assembly includes an ultrasonic vibrator and a hot-melting mold. The bottom of the ultrasonic vibrator is connected to the hot-melting mold. The bottom of the hot-melting mold is provided with multiple hot-melting heads for pressing and forming. The hot-melting heads are driven downward by the ultrasonic vibrator along with the hot-melting mold to perform pressing and forming. This ultrasonic hot melt device has advantages such as uniform heating, no dead angles, fast heating speed, high efficiency, good melting effect, durable and long service life of hot melt mold, full and smooth product surface, and sufficient tensile strength. However, during the ultrasonic hot melt process, when workers pick up and put down materials, the hot melt position is the same as the material picking and putting position. The components at the hot melt position and the surrounding air are heated due to the heat transfer during ultrasonic hot melt, which makes it easy for workers to be burned by the heated components when picking up and putting down materials. At the same time, a protective cover is usually set up during hot melt, but the protective cover vibrates with the welding head during ultrasonic hot melt, resulting in increased noise. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is to provide a safe ultrasonic heat-melting device and method for preventing burns, which can prevent workers from being burned and reduce the noise of the protective cover.

[0005] To solve the above-mentioned technical problems, the present invention provides a safe ultrasonic heat-melting device for preventing burns, comprising: a support frame; an ultrasonic component connected to the support frame, the ultrasonic component including an ultrasonic generator, a mounting plate, and a protective cover, the mounting plate and the ultrasonic generator being connected to the support frame, a slide rail and a driving component connected to the side wall of the mounting plate, a sliding plate slidably connected to the slide rail, the output end of the driving component being connected to the sliding plate, a transducer connected to the sliding plate, the ultrasonic generator being connected to the transducer, an amplitude transformer connected to the transducer, and an end of the amplitude transformer away from the transducer being connected to... The device includes a guide seat with a guide groove on its side wall, a pressure plate connected to the side of the guide seat away from the transducer, and the width and depth of the guide groove gradually increasing towards the transducer. A protective cover has a protrusion that is slidably connected to the guide groove. A blower is connected to the support frame. A support assembly is also connected to the support frame, including an air duct seat with an air duct. The air outlet of the blower communicates with the air duct. A positioning assembly is connected to the side of the support assembly near the pressure plate, and the end of the protective cover abuts against the positioning assembly.

[0006] In one embodiment of the present invention, a sealing frame is connected to the end of the air duct seat, an air guide is provided on the side wall of the open end of the air duct, a plurality of air guides are arranged circumferentially along the side wall of the air duct, the air guides are connected to the air duct, and the air guides are connected to the air outlet of the blower.

[0007] In one embodiment of the present invention, the sidewall of the opening end of the air duct is provided with a first guide surface, the air guide is located on the first guide surface, the positioning component includes a movable windproof frame, the windproof frame is provided with a second guide surface, and the second guide surface can abut against the first guide surface.

[0008] In one embodiment of the present invention, the positioning component further includes a support frame, a movable frame, and a first elastic member, the first elastic member being located between the support frame and the movable frame, the windshield frame being connected to the movable frame, and the end of the protective cover being able to abut against the movable frame.

[0009] In one embodiment of the present invention, the positioning component further includes a fixed frame and a connecting frame. The fixed frame is located at the open end of the air duct seat, the support frame is connected to the inner side of the fixed frame, the connecting frame is connected to the side of the fixed frame away from the air duct seat, and the movable frame is slidably connected to the connecting frame.

[0010] In one embodiment of the present invention, the support assembly further includes a support base and a support plate, the air duct base is located on the side of the support base near the pressure plate, the support plate is located in the air duct and is slidably connected to the air duct, and a hot-melt space is formed between the pressure plate and the support plate.

[0011] In one embodiment of the present invention, a limiting frame is provided on the side wall of the air duct, and the limiting frame is located between the support plate and the bottom of the air duct.

[0012] In one embodiment of the present invention, the support assembly further includes a slide rod and a second elastic member. One end of the slide rod is connected to the support plate, and the slide rod is slidably connected to the air duct seat. The second elastic member is located between the bottom of the air duct and the support plate.

[0013] In one embodiment of the present invention, the support assembly further includes a limiting ring and a blocking disc. The limiting ring is sleeved on the slide rod and located at the bottom of the air duct. The support seat has an avoidance groove on the side away from the pressure plate. The slide rod passes through the support seat, and the blocking disc is connected to the end of the slide rod and located in the avoidance groove.

[0014] This invention also provides a safe ultrasonic heat-melting method for preventing burns, comprising the following steps: Step S1: placing the material to be heat-melted in the air duct; Step S2: moving the pressure plate and protective cover toward the positioning component until the protective cover abuts against the positioning component; Step S3: the pressure plate continues to move toward the positioning component, and the protective cover slides along the guide groove until the pressure plate abuts against the material to be heat-melted; Step S4: the pressure plate performs heat-melting welding on the material to be heat-melted until the welding of the material is completed; Step S5: the pressure plate and protective cover are reset, and the blower outputs airflow to cool the welded material.

[0015] The technical solution of the present invention has the following advantages compared with the prior art:

[0016] 1. The present invention provides a safe ultrasonic heat-melting device and method for preventing burns. By setting a guide groove on the guide seat, and by gradually increasing the width and depth of the guide groove towards the transducer, a gap gradually increases between the protrusion and the side wall of the guide groove during the process of the protective cover abutting against the positioning component and the pressure plate continuing to descend. This gap provides vibration space during the vibration of the pressure plate, preventing high-frequency vibration of the protective cover. This allows the protective cover to provide burn protection while reducing vibration and noise during heat-melting welding.

[0017] 2. By tilting the first guide surface, when the part of the material to be melted on the support plate protrudes from the edge of the support plate, the first guide surface can abut against the material to be melted and guide the material to be melted during the descent of the support plate, so that the material to be melted gradually moves onto the support plate, thereby giving the first guide surface a positioning function for the material to be melted, which can prevent the material to be melted from shifting, and thus prevent the welding position of the material from shifting.

[0018] 3. The sliding connection between the slide rod and the support base and the air duct base allows the support plate to be raised and lowered. The slide rod guides the raising and lowering of the support plate, while the second elastic element drives the support plate to reset. This creates a height difference between the hot-melt position and the cooling position of the material. When workers pick up or put down materials, they can do so at the cooling position, thus avoiding the hot-melt position and the pick-up / put-down position being the same, and preventing workers from being burned due to excessively high temperatures when picking up or putting down parts.

[0019] 4. Through the cooperation between the second guide surface on the wind baffle and the first guide surface on the air duct seat, the first guide surface can fit against the second guide surface during the descent of the wind baffle, thereby blocking the air duct. When the material is ultrasonically melted, external air cannot enter the air duct through the air duct, thus avoiding heat loss in the air duct and preventing poor welding quality due to excessively low temperature during material melting. Attached Figure Description

[0020] To make the content of this invention easier to understand, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0021] Figure 1 This is a schematic diagram of the structure of a safe ultrasonic heat-melting device for preventing burns according to the present invention;

[0022] Figure 2 yes Figure 1 A structural diagram from another angle;

[0023] Figure 3 This is a partial structural diagram of an ultrasound component;

[0024] Figure 4 This is a schematic diagram of the cooperation structure between the guide seat and the protective cover;

[0025] Figure 5 yes Figure 4 Partial structural sectional view;

[0026] Figure 6 This is a structural diagram of the supporting components;

[0027] Figure 7 yes Figure 6 Partial structural sectional view;

[0028] Figure 8 This is a schematic diagram of the internal structure of the supporting components;

[0029] Figure 9 This is a schematic diagram of the cooperation structure between the positioning component and the support component;

[0030] Figure 10 yes Figure 9 Partial structural sectional view;

[0031] Figure 11 This is a partial structural cross-sectional view of the positioning component;

[0032] Figure 12 This is a flowchart of a safe ultrasonic heat-melting method for preventing burns according to the present invention.

[0033] Explanation of reference numerals in the accompanying drawings: 1. Support frame; 2. Ultrasonic assembly; 3. Positioning assembly; 4. Support assembly; 5. Blower; 21. Ultrasonic generator; 22. Mounting plate; 23. Slide plate; 24. Transducer; 25. Drive component; 26. Amplitude bar; 27. Protective cover; 28. Guide seat; 29. ​​Pressure plate; 31. Fixing frame; 32. Windproof frame; 33. First elastic element; 34. Connecting frame; 35. Support frame; 36. Inner locking frame; 37. Movable frame; 41. Support seat; 42. Air duct seat; 43. Sealing frame; 44. Support plate; 45. Limiting frame; 46. Second elastic element; 47. Limiting ring; 48. Slide rod; 49. Blocking plate; 281. Guide groove; 291. Protrusion. Detailed Implementation

[0034] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments described are not intended to limit the present invention.

[0035] Reference Figures 1 to 5As shown, a scald-preventing safe ultrasonic heat-melting device of the present invention includes: a support frame 1; and an ultrasonic component 2 connected to the support frame 1. The ultrasonic component 2 includes an ultrasonic generator 21, a mounting plate 22, and a protective cover 27. Both the mounting plate 22 and the ultrasonic generator 21 are connected to the support frame 1. A slide rail and a drive component 25 are connected to the side wall of the mounting plate 22. A slide plate 23 is slidably connected to the slide rail. The output end of the drive component 25 is connected to the slide plate 23. A transducer 24 is connected to the slide plate 23. The ultrasonic generator 21 is connected to the transducer 24. An amplitude transformer 26 is connected to the transducer 24. A guide seat 28 is connected to the end of the amplitude transformer 26 away from the transducer 24. The guide seat 28 has a guide groove 281 on its side wall. A pressure plate 29 is connected to the side of the guide seat 28 away from the transducer 24. The width and depth of the guide groove 281 gradually increase towards the transducer 24. The protective cover 27 has a protrusion 291, which is slidably connected to the guide groove 281. The blower 5 is connected to the support frame 1. The support assembly 4 is connected to the support frame 1. The support assembly 4 includes an air duct seat 42 with an air duct. The air outlet of the blower 5 communicates with the air duct. The positioning assembly 3 is connected to the side of the support assembly 4 near the pressure plate 29. The end of the protective cover 27 can abut against the positioning assembly 3.

[0036] This embodiment of a scald-preventing safe ultrasonic hot-melt device involves the following steps when hot-melting the material to be hot-melted: First, the material to be hot-melted is placed in the air duct. Then, the drive component 25 drives the slide plate 23 to descend, causing the pressure plate 29 and the protective cover 27 to move towards the positioning component 3 until the protective cover 27 abuts against the positioning component 3. Next, the drive component 25 continues to drive the pressure plate 29 towards the positioning component 3. At this time, the protective cover 27 slides along the guide groove 281 until the pressure plate 29 abuts against the material to be hot-melted. Then, the ultrasonic generator 21 generates high-frequency high-voltage electrical energy, and the transducer 24 converts the electrical energy into vibrational mechanical energy and drives the amplitude transformer 26 to vibrate. The amplitude transformer 26 amplifies the amplitude, thereby driving the pressure plate 29 to vibrate, which in turn causes the pressure plate 29 to perform hot-melt welding on the material to be hot-melted until the welding of the material is completed. Finally, the pressure plate 29 and the protective cover 27 are reset, and the blower 5 outputs airflow to cool the welded hot-melt material. By setting the guide groove 281 on the guide seat 28, and by gradually increasing the width and depth of the guide groove 281 towards the transducer 24, a gap exists between the protrusion 291 and the side wall of the guide groove 281 during the process of the protective cover 27 abutting against the positioning component 3 and the pressure plate 29 continuing to descend. This gap gradually increases, providing vibration space during the vibration of the pressure plate 29. This prevents high-frequency vibration of the protective cover 27, allowing it to provide protection against burns while reducing vibration and noise during hot-melt welding. The connection between the blower 5 and the air duct allows for cooling of the material after hot-melt welding by outputting airflow, thus preventing workers from being burned.

[0037] Reference Figure 1 As shown, the support frame 1 is used to support the ultrasound component 2, the blower 5 and the support component 4. Specifically, the ultrasound component 2, the blower 5 and the support component 4 are all connected to the top of the support frame 1, and the support component 4 is located at the middle of the top of the support frame 1.

[0038] Reference Figures 2 to 5As shown, the ultrasonic component 2 includes an ultrasonic generator 21, a mounting plate 22, and a protective cover 27. Both the mounting plate 22 and the ultrasonic generator 21 are connected to the support frame 1, and the plane of the mounting plate 22 is perpendicular to the plane of the top of the support frame 1. The side wall of the mounting plate 22 is connected to slide rails and a drive component 25. Specifically, the side wall of the mounting plate 22 is connected to two parallel slide rails. The drive component 25 can be considered as a linear cylinder and is located on one side of the slide rails. A slide plate 23 is slidably connected to the slide rails, and the output end of the drive component 25 is connected to the slide plate 23, thereby enabling the drive component 25 to drive the slide plate 23 to rise and fall. A transducer 24 is connected to the slide plate 23, and the ultrasonic generator 21 is connected to the transducer 24. An amplitude transformer 26 is connected to the bottom of the transducer 24. The ultrasonic generator 21 generates high-frequency, high-voltage electrical energy, which the transducer 24 converts into vibrational mechanical energy and drives the amplitude transformer 26 to vibrate. The amplitude transformer 26 amplifies the amplitude. The end of the amplitude transformer 26 furthest from the transducer 24 is connected to a guide seat 28. A guide groove 281 is provided on the opposite side wall of the guide seat 28. A pressure plate 29 is connected to the side of the guide seat 28 furthest from the transducer 24. The width and depth of the guide groove 281 gradually increase towards the transducer 24, meaning the cross-sectional area of ​​the guide groove 281 gradually increases towards the direction away from the pressure plate 29, thus giving the guide groove 281 an overall frustum shape. The protective cover 27 is an overall quadrilateral ring shape. A protrusion 291 is provided on the inner side of the protective cover 27 at a position corresponding to the guide groove 281. The protrusion 291 is slidably connected to the guide groove 281, and the dimensions of the protrusion 291 and the end of the guide groove 281 near the pressure plate 29 correspond. As the protrusion 291 slides along the top of the guide groove 281, a gap exists between the protrusion 291 and the guide groove 281, and this gap gradually increases. The size of the pressure plate 29 is larger than the bottom size of the guide seat 28, so that when the protective cover 27 does not abut against the positioning component 3, the protrusion 291 can abut against the pressure plate 29, preventing the protective cover 27 from detaching from the guide seat 28, while the pressure plate 29 is within the enclosure of the protective cover 27.

[0039] Reference Figures 6 to 8 As shown, the support assembly 4 includes an air duct seat 42, with a recessed air duct at the top. The blower 5 can be considered a fan, and its outlet end is connected to the air duct. Specifically, the support assembly 4 also includes a support base 41 and a support plate 44. The air duct seat 42 is located on the side of the support base 41 near the pressure plate 29, and the support base 41 is connected to the support frame 1. The pressure plate 29 and the support plate 44 form a hot-melt space for accommodating the material to be melted, and the top side of the support plate 44 is used to place the material to be melted.

[0040] The support plate 44 is located within the air duct and is slidably connected to it. Specifically, the support assembly 4 also includes a slide rod 48 and a second elastic member 46. The top end of the slide rod 48 is connected to the support plate 44, and the slide rod 48 is slidably connected to the bottom of the air duct seat 42, allowing the slide rod 48 to rise and fall. The second elastic member 46 can be considered as a rubber washer or a spring. The second elastic member 46 is sleeved on the slide rod 48 and located between the bottom of the air duct and the support plate 44. The top end of the second elastic member 46 abuts against the support plate 44, and the second elastic member 46 is used to reset the support plate 44.

[0041] The support assembly 4 also includes a limiting ring 47 and a blocking disc 49. The limiting ring 47 is sleeved on the slide rod 48 and located at the bottom of the air duct. The limiting ring 47 is used to guide the movement of the slide rod 48. The bottom end of the second elastic member 46 abuts against the limiting ring 47. The support base 41 has a relief groove on the side away from the pressure plate 29. The slide rod 48 also passes through the support base 41 and is slidably connected to the support base 41. The blocking disc 49 is connected to the bottom end of the slide rod 48 and located in the relief groove. The blocking disc 49 is used to limit the extreme movement position of the slide rod 48, thereby limiting the extreme movement position of the pressure plate 29. During the descent of the pressure plate 29, after the pressure plate 29 comes into contact with the material to be melted, the pressure plate 29 continues to descend, applying pressure to the material to be melted. At the same time, the support plate 44 descends, the second elastic element 46 is compressed, and then the ultrasonic generator 21 generates high-frequency high-voltage electrical energy. The transducer 24 converts the electrical energy into vibrational mechanical energy and drives the amplitude transformer 26 to vibrate. The amplitude transformer 26 amplifies the amplitude, thereby driving the pressure plate 29 to vibrate, causing the pressure plate 29 to drive the material to be melted to vibrate. The hot-melt welding surfaces of the material to be melted reciprocate at high frequency, and under pressure, the hot-melt welding surfaces of the material to be melted melt, until the welding process is completed.

[0042] The side wall of the air duct is provided with a limiting frame 45, which is located between the support plate 44 and the bottom of the air duct. The limiting frame 45 is used to limit the extreme movement position of the pressure plate 29 during the descent process.

[0043] Reference Figures 9 to 11As shown, the positioning component 3 is connected to the side of the support component 4 near the pressure plate 29, and the end of the protective cover 27 can abut against the positioning component 3. Specifically, the positioning component 3 also includes a fixed frame 31 and a connecting frame 34. The fixed frame 31 is annular and located at the opening end of the air duct seat 42, and the connecting frame 34 is annular and connected to the side of the fixed frame 31 away from the air duct seat 42. The positioning component 3 also includes a support frame 35, a movable frame 37, and a first elastic member 33. The first elastic member 33 can be regarded as a rubber ring pad and is located between the support frame 35 and the movable frame 37. The support frame 35 is annular and connected to the inner side of the fixed frame 31. The connecting frame 34 is provided with a sliding groove, and the movable frame 37 is slidably connected to the sliding groove of the connecting frame 34. The sliding groove of the connecting frame 34 can guide the movement of the movable frame 37. The bottom end of the protective cover 27 can abut against the movable frame 37 and drive the movable frame 37 to descend, so that the sliding groove of the connecting frame 34 can also guide the movement of the protective cover 27.

[0044] A sealing frame 43 is connected to the top end of the air duct seat 42. The side wall of the open end of the air duct is provided with an air guide, that is, an air guide is provided at the top of the side wall of the air duct. Multiple air guides are arranged circumferentially along the side wall of the air duct. The air guides are connected to the air duct. The blower 5 is connected to the air duct seat 42 through a pipe, so that the air guide is connected to the air outlet of the blower 5, and the airflow output by the blower 5 can be output through the pipe and the air guide.

[0045] The sidewall of the opening end of the air duct is provided with a first guide surface, which is inclined so that the width between the edge of the air duct seat 42 and the edge of the air duct gradually increases towards the bottom of the air duct. The air guide is located on the first guide surface. Due to the inclined arrangement of the first guide surface, when the part of the material to be melted on the support plate 44 protrudes from the edge of the support plate 44, the first guide surface can abut against the material to be melted and guide the material to be melted during the descent of the support plate 44, so that the material to be melted gradually moves onto the support plate 44. Thus, the first guide surface has a positioning function for the material to be melted, which can prevent the material to be melted from shifting, and thus prevent the welding position of the material from shifting.

[0046] The positioning component 3 also includes a movable windshield frame 32, which is connected to the inner side of the movable frame 37, allowing the windshield frame 32 to be raised and lowered. A second guide surface is provided at the bottom of the windshield frame 32 near the side wall of the air duct. The second guide surface is inclined and abuts against and fits against the first guide surface. An inner retaining frame 36 is also connected to the inner wall of the windshield frame 32. Through the sliding cooperation of the first and second guide surfaces, the inner retaining frame 36 guides the descent of the pressure plate 29. The bottom end of the protective cover 27 can abut against the movable frame 37. During the descent of the protective cover 27, after the protrusion 291 abuts against the top of the guide groove 281, the pressure plate 29 continues to descend. At this time, the protective cover 27 applies pressure to the movable frame 37, thereby compressing the first elastic element 33 and causing the movable frame 37 to descend, thereby causing the windproof frame 32 to descend until the second guide surface of the windproof frame 32 fits against the first guide surface of the wind duct seat 42, thereby blocking the air duct and preventing heat loss during the heat melting process of the pressure plate 29.

[0047] In use, the worker places the material to be melted on the support plate 44, ensuring the welding surfaces of the materials are in contact. Then, the drive component 25 lowers the slide plate 23, thereby lowering the pressure plate 29 and the protective cover 27, gradually approaching the material to be melted. During the descent, the bottom of the protective cover 27 first abuts against the top of the movable frame 37. Then, the drive component 25 drives the pressure plate 29 to continue descending, causing the protrusion 291 of the protective cover 27 to move along the guide groove 281 until the protrusion 291 abuts against the top of the guide groove 281. The pressure plate 29 then continues to descend... As the pressure plate 29 descends, its bottom comes into contact with the material to be melted, while the protective cover 27 applies pressure to the movable frame 37, causing the first elastic element 33 to be compressed and deformed. The movable frame 37 descends along the slide groove of the connecting frame 34. Then, the pressure plate 29 continues to descend, applying pressure to the material to be melted, and this pressure is transmitted through the material to the support plate 44, causing the support plate 44 to descend. Simultaneously, the slide rod 48 moves under the restriction of the limiting ring 47, and the second elastic element 46 is compressed and deformed. If the material to be melted shifts, the support plate 44 descends... During the process, the first guide surface guides the material to be melted until it moves back onto the support plate 44. Simultaneously, as the movable frame 37 descends, it drives the windshield frame 32 to descend until the second guide surface of the windshield frame 32 contacts the first guide surface of the air duct seat 42, at which point the windshield frame 32 blocks the air vent. Next, the ultrasonic generator 21 generates high-frequency, high-voltage electrical energy, which the transducer 24 converts into vibrational mechanical energy, driving the amplitude transformer 26 to vibrate. The amplitude transformer 26 amplifies the amplitude, thereby driving the pressure plate 29 to vibrate, causing the pressure plate 29 to move... The material to be melted vibrates, and the welding surfaces of the material to be melted reciprocate at high frequency. Under pressure, the welding surfaces of the material to be melted melt, until the welding process is completed. Finally, the driving component 25 drives the protective cover 27 and the pressure plate 29 to move upward, the second elastic component 46 drives the support plate 44 to reset, and the first elastic component 33 drives the movable frame 37 to reset. At this time, the material that has been melted corresponds to the air guide, the wind baffle 32 no longer blocks the air guide, the blower 5 outputs airflow, and the airflow is output from the air guide to cool the material that has been melted.

[0048] Reference Figure 12 As shown, the present invention also provides a safe ultrasonic heat-melting method for preventing burns, comprising the following steps: Step S1: placing the material to be heat-melted in the air duct; Step S2: moving the pressure plate 29 and the protective cover 27 toward the positioning component 3 until the protective cover 27 abuts against the positioning component 3; Step S3: the pressure plate 29 continues to move toward the positioning component 3, and the protective cover 27 slides along the guide groove 281 until the pressure plate 29 abuts against the material to be heat-melted; Step S4: the pressure plate 29 performs heat-melting welding on the material to be heat-melted until the welding of the heat-melting material is completed; Step S5: the pressure plate 29 and the protective cover 27 are reset, and the blower 5 outputs airflow to cool the welded heat-melting material.

[0049] Step S3 also includes a step of sealing the air vent. When the pressure plate 29 comes into contact with the material to be melted, the end of the protective cover 27 comes into contact with the movable frame 37, and the protrusion 291 comes into contact with the top of the guide groove 281. The pressure plate 29 continues to move toward the positioning component 3. At the same time, the protective cover 27, the movable frame 37 and the windproof frame 32 move toward the positioning component 3 until the windproof frame 32 blocks the air vent. Meanwhile, the support plate 44 moves with the pressure plate 29.

[0050] Step S5 also includes a reset step. While the pressure plate 29 and the protective cover 27 are reset, the support plate 44 and the windproof frame 32 are also reset. The airflow output by the blower 5 is output through the air guide to cool down the material that has completed the hot melt welding.

[0051] The present invention provides a safe ultrasonic heat-melting device and method for preventing burns. By setting a guide groove 281 on the guide seat 28, and by gradually increasing the width and depth of the guide groove 281 towards the transducer 24, a gap exists between the protrusion 291 and the side wall of the guide groove 281 during the process of the protective cover 27 abutting against the positioning component 3 and the pressure plate 29 continuing to descend. This gap gradually increases, and during the vibration of the pressure plate 29, the gap between the protrusion 291 and the side wall of the guide groove 281 can provide vibration space, avoiding high-frequency vibration of the protective cover 27. This allows the protective cover 27 to provide burn protection while reducing vibration of the protective cover 27 during heat-melting welding and reducing noise.

[0052] By tilting the first guide surface, when the portion of the material to be melted protrudes from the edge of the support plate 44, the first guide surface can abut against the material to be melted and guide it during the descent of the support plate 44, so that the material to be melted gradually moves onto the support plate 44. This allows the first guide surface to position the material to be melted, preventing it from shifting and thus avoiding the shifting of the welding position.

[0053] The sliding connection between the slide rod 48 and the support base 41 and the air duct base 42 allows the support plate 44 to be raised and lowered. The slide rod 48 guides the raising and lowering of the support plate 44, while the second elastic element 46 drives the support plate 44 to reset. This creates a height difference between the hot-melt position and the cooling position of the material. When workers pick up or put down materials, they can do so at the cooling position, thus avoiding the hot-melt position and the pick-up / put-down position being the same, and preventing workers from being burned due to excessively high temperatures when picking up or putting down parts.

[0054] By cooperating with the second guide surface on the wind deflector frame 32 and the first guide surface on the air duct seat 42, the first guide surface can fit against the second guide surface during the descent of the wind deflector frame 32, thereby blocking the air duct opening. This prevents external air from entering the air duct through the air duct during ultrasonic heat melting of the material, thus avoiding heat loss from the air duct and preventing poor welding quality due to excessively low temperature during material heat melting.

[0055] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A safe ultrasonic heat-melting device for preventing burns, characterized in that, include: Support frame; An ultrasonic component is provided, which is connected to the support frame. The ultrasonic component includes an ultrasonic generator, a mounting plate, and a protective cover. Both the mounting plate and the ultrasonic generator are connected to the support frame. A slide rail and a drive component are connected to the side wall of the mounting plate. A slide plate is slidably connected to the slide rail. The output end of the drive component is connected to the slide plate. A transducer is connected to the slide plate. The ultrasonic generator is connected to the transducer. An amplitude transformer is connected to the transducer. A guide seat is connected to the end of the amplitude transformer away from the transducer. A guide groove is provided on the side wall of the guide seat. A pressure plate is connected to the side of the guide seat away from the transducer. The width and depth of the guide groove gradually increase towards the transducer. The protective cover has a protrusion that is slidably connected to the guide groove. The blower component is connected to the support frame; A support assembly is connected to the support frame. The support assembly includes an air duct seat, which has an air duct. The air outlet of the blower is connected to the air duct. A positioning component is connected to the side of the support component near the pressure plate, and the end of the protective cover can abut against the positioning component.

2. The anti-scalding safety ultrasonic heat melting device according to claim 1, characterized in that: The end of the air duct seat is connected to a sealing frame, and the side wall of the open end of the air duct is provided with an air guide. Multiple air guides are arranged circumferentially along the side wall of the air duct. The air guides are connected to the air duct and are connected to the air outlet of the blower.

3. The anti-scalding safety ultrasonic heat melting device according to claim 2, characterized in that: The sidewall of the opening end of the air duct is provided with a first guide surface, the air duct is located on the first guide surface, the positioning component includes a movable windproof frame, the windproof frame is provided with a second guide surface, and the second guide surface can abut against the first guide surface.

4. The anti-scalding safety ultrasonic heat melting device according to claim 3, characterized in that: The positioning component further includes a support frame, a movable frame, and a first elastic element. The first elastic element is located between the support frame and the movable frame. The windproof frame is connected to the movable frame, and the end of the protective cover can abut against the movable frame.

5. The anti-scalding safety ultrasonic heat melting device according to claim 4, characterized in that: The positioning component further includes a fixed frame and a connecting frame. The fixed frame is located at the open end of the air duct seat. The support frame is connected to the inner side of the fixed frame. The connecting frame is connected to the side of the fixed frame away from the air duct seat. The movable frame is slidably connected to the connecting frame.

6. The anti-scalding safety ultrasonic heat melting device according to claim 1, characterized in that: The support assembly further includes a support base and a support plate. The air duct base is located on the side of the support base near the pressure plate. The support plate is located inside the air duct and is slidably connected to the air duct. A heat-melting space is formed between the pressure plate and the support plate.

7. The anti-scalding safety ultrasonic heat melting device according to claim 6, characterized in that: The side wall of the air duct is provided with a limiting frame, which is located between the support plate and the bottom of the air duct.

8. The anti-scalding safety ultrasonic heat melting device according to claim 6, characterized in that: The support assembly further includes a slide rod and a second elastic element. One end of the slide rod is connected to the support plate, and the slide rod is slidably connected to the air duct seat. The second elastic element is located between the bottom of the air duct and the support plate.

9. The anti-scalding safety ultrasonic heat melting device according to claim 8, characterized in that: The support assembly also includes a limiting ring and a blocking plate. The limiting ring is sleeved on the slide rod and located at the bottom of the air duct. The support base has a clearance groove on the side away from the pressure plate. The slide rod passes through the support base, and the blocking plate is connected to the end of the slide rod and located in the clearance groove.

10. A safe ultrasonic heat-melting method for preventing burns, characterized in that, Includes the following steps: Step S1: Place the material to be melted into the air duct; Step S2: The pressure plate and protective cover move toward the positioning component until the protective cover abuts against the positioning component; Step S3: The pressure plate continues to move toward the positioning component, and the protective cover slides along the guide groove until the pressure plate comes into contact with the material to be melted; Step S4: The pressure plate performs hot melt welding on the material to be hot melted until the welding of the hot melt material is completed; Step S5: The pressure plate and protective cover are reset, and the blower outputs airflow to cool the hot melt material that has been welded.

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