A new type of fully automatic welding machine for mask ear straps

Abstract

This invention discloses a novel fully automatic mask ear loop welding machine, comprising a mask conveying device, two ear loop conveying devices, and two ultrasonic welding devices. The two ear loop conveying devices are arranged parallel and spaced above the mask conveying device, and each ultrasonic welding device is arranged below a corresponding ear loop conveying device. The mask conveying device includes a chain conveyor mechanism, several tray mechanisms for fitting masks onto the chain conveyor mechanism arranged at intervals, and a flipping mechanism fixedly installed on the chain conveyor mechanism and located between the two ear loop conveying devices. Two flanging mechanisms are also fixedly installed on the chain conveyor mechanism, with each flanging mechanism arranged closer to one ear loop conveying device. This invention can automate the conveying, bending, cutting, welding, and unloading of ear loops, achieving a high degree of automation, high production efficiency, and a reasonable overall design, compact structure, small size, low cost, and strong practicality.

Description

Technical Field

[0001] The invention relates to the technical field of mask ear strap welding, and in particular to a new full-automatic mask ear strap welding machine. Background Art

[0002] Masks are a kind of sanitary protective equipment, usually worn on the mouth and nose to filter the air entering the mouth and nose, thereby blocking droplets, dust, pollen and other substances in the air. Masks are generally hung on the ears of the human body with ear straps to facilitate the fit of the mask to the mouth and nose. Therefore, in the mask production process, one of the most important steps is to bend the ear straps into an arc (semicircle) and then weld the two ends of the ear straps to the surface of the mask.

[0003] The existing method of welding ear straps is basically manual, that is, manually cutting a small section, then bending it into a semicircle, and finally welding it to the mask with a welder. This production method has high cost, high work intensity, and low production efficiency. At the same time, since it is a mechanical and repetitive work, it is easy to make mistakes when the workers' physical strength decreases, resulting in the inability to guarantee production quality. Summary of the invention

[0004] The invention aims to provide a new fully automatic welding machine for mask ear straps, which can realize the automatic conveying, bending, shearing, welding and blanking processes of the ear straps, has high automation and production efficiency, and has reasonable overall design, compact structure, small volume and low cost, can ensure the quality of the products produced and has strong practicality.

[0005] In order to achieve the above purpose, the following technical solutions are adopted:

[0006] A new fully automatic welding machine for mask ear straps comprises a mask transmission device, two ear strap conveying devices, and two ultrasonic welding devices; the two ear strap conveying devices are arranged above the mask transmission device in parallel and at intervals, and each ultrasonic welding device is arranged below the mask transmission device corresponding to an ear strap conveying device; the mask transmission device comprises a chain plate conveying line mechanism, a plurality of support plate mechanisms arranged at intervals on the chain plate conveying line mechanism for inserting masks, and a flipping mechanism fixedly installed on the chain plate conveying line mechanism and located between the two ear strap conveying devices; two flanging mechanisms are also fixedly installed on the chain plate conveying line mechanism, and each flanging mechanism is arranged close to one side of an ear strap conveying device; one of the flanging mechanisms is used to fold the first side of the mask sleeved on the support plate mechanism, so that the ultrasonic welding device arranged close to the flanging mechanism welds the ear strap to the second side of the mask opposite to the first side; the flipping mechanism is used to drive the support plate mechanism to drive the mask to flip, so that the other flanging mechanism folds the second side of the mask, and then the ear strap is welded to the first side of the mask through another ultrasonic welding device.

[0007] Furthermore, the chain conveyor line mechanism includes a first mounting vertical plate, a chain conveyor belt arranged on one side of the first mounting vertical plate, and a first rotating motor drivingly connected to the chain conveyor belt; the chain conveyor belt is arranged in a ring-shaped closed manner, and a plurality of support plate mechanisms are arranged at intervals on the chain conveyor belt. The first rotating motor is used to drive the chain conveyor belt to drive the plurality of support plate mechanisms to move cyclically between the ear band conveying device and the ultrasonic welding device.

[0008] Furthermore, the support mechanism includes a first fixed seat fixedly connected to the chain conveyor belt, a first rotating shaft arranged perpendicular to the length direction of the first mounting vertical plate and movably inserted in the first fixed seat, a supporting plate fixedly connected to one end of the first rotating shaft for inserting a mask, and a flipping block fixedly connected to the other end of the first rotating shaft; the flipping mechanism is used to drive the supporting plate to rotate via the flipping block and the first rotating shaft.

[0009] Furthermore, the flipping mechanism includes a second fixed seat fixedly arranged on one side of the first mounting vertical plate, a second rotating motor installed on the second fixed seat, and a flip clamp for clamping the flipping block driven by the second rotating motor; the flanging mechanism includes a first mounting horizontal plate arranged on the other side of the first mounting vertical plate and located below the supporting plate, a first telescopic cylinder obliquely arranged at the top of the first mounting horizontal plate, a flanging rod driven by the first telescopic cylinder for folding the first side edge or the second side edge of the mask, and a flanging vertical plate arranged parallel to the first mounting vertical plate between the flanging rod and the ultrasonic welding device.

[0010] Furthermore, the ear band conveying device includes a first mounting frame arranged above the mask transmission device, an ear band transmission mechanism arranged on one side of the first mounting frame, a wire pressing mechanism installed on the first mounting frame, a winding mechanism drivingly connected to the wire pressing mechanism, a clamping mechanism and a wire stripping mechanism installed on the winding mechanism, and a wire cutting mechanism arranged on one side of the winding mechanism; the ear band transmission mechanism is used to convey the ear band to the winding mechanism, and the winding mechanism is used to wind the ear band into an arc shape; the clamping mechanism is used to clamp the ear band wound on the winding mechanism so that the wire cutting mechanism can cut the ear band; the wire pressing mechanism is used to drive the winding mechanism to rise and fall to press the two ends of the cut ear band onto the mask so that the ultrasonic welding device can weld it; the wire stripping mechanism is used to detach the welded ear band from the winding mechanism.

[0011] Furthermore, the ear band transmission mechanism includes a first mounting seat fixedly connected to one side of the first mounting frame, a material reel arranged on the top of the first mounting seat, a third rotating motor installed on one side of the first mounting seat, a driving wheel arranged on the other side of the first mounting seat and drivingly connected to the third rotating motor, a plurality of guide posts arranged below the driving wheel, and a floating wheel movably installed on the plurality of guide posts; a tensioning wheel and a driven wheel are also provided on one side of the first mounting seat, and the driving wheel is located between the tensioning wheel and the driven wheel; a first through hole for the ear band to pass through is also provided on the top of the first mounting seat and the top of the first mounting frame.

[0012] Furthermore, the wire pressing mechanism includes a second mounting cross plate, a first lifting cylinder, a connecting plate, a plurality of first lifting guide rods, and a plurality of welding head guide rods; the second mounting cross plate is arranged on the top of the first mounting frame, and the first lifting cylinder is installed on the second mounting cross plate; the connecting plate is drivingly connected to the first lifting cylinder, one end of the plurality of first lifting guide rods is fixedly connected to the winding mechanism, and the other end moves through the connecting plate and the second mounting cross plate in turn; one end of the plurality of welding head guide rods is fixedly connected to the connecting plate, and the other end moves through the winding mechanism, and a welding pressure head is also provided at the end passing through the winding mechanism.

[0013] Furthermore, the winding mechanism includes a winding seat fixedly connected to one end of a plurality of first lifting guide rods, a fourth rotating motor installed on the winding seat, a winding reel drivingly connected to the fourth rotating motor, and a lead wheel fixedly installed on one side of the winding seat; the de-wire mechanism includes two second lifting cylinders arranged on the winding seat, and a de-wire frame drivingly connected to the two second lifting cylinders and arranged near the end of the winding reel.

[0014] Furthermore, the clamping mechanism includes two wire clamping claw modules, two third lifting cylinders installed on the winding seat, and a wire pressing seat driven by the two third lifting cylinders; the two wire clamping claw modules are arranged at a distance from each other on the top of the winding disk in parallel in the length direction of the winding disk, and the third lifting cylinder is used to drive the wire pressing seat to lift and lower to squeeze the wire clamping claw module and thereby clamp and fix the ear band; the wire cutting mechanism includes a slide cylinder arranged on one side of the winding disk, and a pneumatic scissors driven by the slide cylinder and located between the two wire clamping claw modules.

[0015] Furthermore, the ultrasonic welding device includes a first lifting seat arranged below the ear band conveying device, a plurality of second lifting guide rods and a plurality of fourth lifting cylinders installed on the first lifting seat, a first mounting plate arranged on the plurality of second lifting guide rods, an ultrasonic transducer installed on the first mounting plate, an ultrasonic steel film connected to the top of the ultrasonic transducer, and a cooling fan arranged on one side of the first lifting seat.

[0016] By adopting the above scheme, the beneficial effects of the present invention are:

[0017] 1) It can realize the automatic conveying, bending, shearing, welding and cutting of ear straps, with high automation and production efficiency, reasonable overall design, compact structure, small size and low cost, which can ensure the quality of products and has strong practicality;

[0018] 2) The mask transmission device can be used to circulate the mask between the ear strap conveying device and the ultrasonic welding device, so that the ultrasonic welding device can weld the ear strap to the mask, thereby realizing the recycling of the support plate mechanism, reducing costs and improving economic benefits;

[0019] 3) One side of the mask can be folded by the flanging mechanism, which makes it easier for the ultrasonic welding device to weld the ear strap to the other side of the mask, thus avoiding damage to the mask during welding;

[0020] 4) The ear straps are welded using an ultrasonic welding device, which has high welding efficiency and can ensure welding quality;

[0021] 5) The de-threading mechanism can drive the welded ear straps to automatically fall off the winding reel, thereby realizing automatic unloading of masks and saving labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A perspective view of the present invention;

[0023] Figure 2 is a three-dimensional diagram of the mask transmission device of the present invention;

[0024] Figure 3 It is a three-dimensional diagram of the support plate mechanism and the flanging mechanism of the present invention;

[0025] Figure 4 is a three-dimensional diagram of the turning mechanism of the present invention;

[0026] Figure 5 is a three-dimensional diagram of the ear strap delivery device of the present invention;

[0027] Figure 6 for Figure 5 A local enlarged schematic diagram of point A;

[0028] Figure 7 It is a three-dimensional diagram of the wire pressing mechanism of the present invention;

[0029] Figure 8 It is a three-dimensional diagram of the winding mechanism, the clamping mechanism and the de-wire mechanism of the present invention;

[0030] Fig. 9 A three-dimensional diagram of a wire winding reel of the present invention;

[0031] Fig.10 A three-dimensional diagram of the thread trimming mechanism of the present invention;

[0032] Fig.11 is a three-dimensional diagram of the ultrasonic welding device of the present invention;

[0033] The accompanying drawings illustrate:

[0034] 1—Mask transmission device; 2—Ear strap transmission device;

[0035] 3—Ultrasonic welding device; 4—Mounting platform;

[0036] 5—Limiting vertical plate; 6—Discharging stop bar;

[0037] 7—unloading slide; 11—chain plate conveyor line mechanism;

[0038] 12—supporting plate mechanism; 13—turning mechanism;

[0039] 14—flanging mechanism; 21—first mounting frame;

[0040] 22—ear strap transmission mechanism; 23—wire pressing mechanism;

[0041] 24—winding mechanism; 25—clamping mechanism;

[0042] 26—thread-off mechanism; 27—thread-cutting mechanism;

[0043] 31—first lifting seat; 32—second lifting guide rod;

[0044] 33—fourth lifting cylinder; 34—first mounting plate;

[0045] 35—ultrasonic transducer; 36—ultrasonic steel film;

[0046] 37—cooling fan; 111—first mounting vertical plate;

[0047] 112—chain conveyor belt; 113—first rotating motor;

[0048] 121—first fixed seat; 122—first rotating shaft;

[0049] 123—carrying plate; 124—turning block;

[0050] 131—second fixed seat; 132—second rotating motor;

[0051] 133 - flip clamp; 141 - first mounting horizontal plate;

[0052] 142—first telescopic cylinder; 143—flanging rod;

[0053] 144—flange vertical plate; 221—first mounting seat;

[0054] 222—material reel; 223—third rotating motor;

[0055] 224—driving wheel; 225—guide column;

[0056] 226 - floating wheel; 227 - tensioning wheel;

[0057] 228—driven wheel; 229—first through hole;

[0058] 231—second mounting horizontal plate; 232—first lifting cylinder;

[0059] 233—connecting plate; 234—first lifting guide rod;

[0060] 235—welding head guide rod; 236—welding pressure head;

[0061] 241—winding seat; 242—fourth rotating motor;

[0062] 243—winding reel; 244—lead wheel;

[0063] 251—clip claw module; 252—third lifting cylinder;

[0064] 253—wire pressing seat; 261—second lifting cylinder;

[0065] 262—de-threading rack; 271—sliding cylinder;

[0066] 272—Pneumatic scissors. DETAILED DESCRIPTION

[0067] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0068] Reference Figures 1 to 11As shown, the present invention provides a new type of fully automatic welding machine for mask ear straps, comprising a mask transmission device 1, two ear strap conveying devices 2, and two ultrasonic welding devices 3; the two ear strap conveying devices 2 are arranged in parallel and at intervals above the mask transmission device 1, and each ultrasonic welding device 3 is arranged below the ear strap conveying device 2 corresponding to the ear strap conveying device 2; the mask transmission device 1 comprises a chain plate conveying line mechanism 11, a plurality of support plate mechanisms 12 for inserting masks and arranged at intervals on the chain plate conveying line mechanism 11, and a flipping mechanism 13 fixedly installed on the chain plate conveying line mechanism 11 and located between the two ear strap conveying devices 2; Two flanging mechanisms 14 are also fixedly installed on the chain plate conveyor line mechanism 11, and each flanging mechanism 14 is arranged near one side of an ear band conveying device 2; one of the flanging mechanisms 14 is used to fold the first side of the mask mounted on the support plate mechanism 12, so that the ultrasonic welding device 3 arranged near the flanging mechanism 14 welds the ear band to the second side of the mask opposite to the first side; the flipping mechanism 13 is used to drive the support plate mechanism 12 to drive the mask to flip, so that the other flanging mechanism 14 folds the second side of the mask, and then welds the ear band to the first side of the mask through another ultrasonic welding device 3.

[0069] Among them, the chain conveyor line mechanism 11 includes a first mounting vertical plate 111, a chain conveyor belt 112 arranged on one side of the first mounting vertical plate 111, and a first rotating motor 113 drivingly connected to the chain conveyor belt 112; the chain conveyor belt 112 is arranged in a ring-shaped closed manner, and a plurality of support plate mechanisms 12 are arranged at intervals on the chain conveyor belt 112, and the first rotating motor 113 is used to drive the chain conveyor belt 112 to drive the plurality of support plate mechanisms 12 to move cyclically between the ear band conveying device 2 and the ultrasonic welding device 3; the support plate mechanism 12 includes a first fixed seat 121 fixedly connected to the chain conveyor belt 112, a first rotating shaft 122 arranged perpendicular to the length direction of the first mounting vertical plate 111 and movably inserted in the first fixed seat 121, a bearing plate 123 fixedly connected to one end of the first rotating shaft 122 for inserting a mask, and a flip plate fixedly connected to the other end of the first rotating shaft 122 Block 124; the flipping mechanism 13 is used to drive the supporting plate 123 to rotate through the flipping block 124 and the first rotating shaft 122; the flipping mechanism 13 includes a second fixed seat 131 fixedly arranged on one side of the first mounting vertical plate 111, a second rotating motor 132 installed on the second fixed seat 131, and a flip clamp 133 driven and connected to the second rotating motor 132 for clamping the flipping block 124; the flanging mechanism 14 includes a first mounting horizontal plate 141 arranged on the other side of the first mounting vertical plate 111 and located below the supporting plate 123, a first telescopic cylinder 142 obliquely arranged at the top of the first mounting horizontal plate 141, a flanging rod 143 driven and connected to the first telescopic cylinder 142 for folding the first side edge or the second side edge of the mask, and a flanging vertical plate 144 parallel to the first mounting vertical plate 111 and arranged between the flanging rod 143 and the ultrasonic welding device 3.

[0070] The ear band conveying device 2 includes a first mounting frame 21 arranged above the mask conveying device 1, an ear band conveying mechanism 22 arranged on one side of the first mounting frame 21, a wire pressing mechanism 23 installed on the first mounting frame 21, a winding mechanism 24 driven and connected to the wire pressing mechanism 23, a clamping mechanism 25 and a wire stripping mechanism 26 installed on the winding mechanism 24, and a wire cutting mechanism 27 arranged on one side of the winding mechanism 24; the ear band conveying mechanism 22 is used to convey the ear band to the winding mechanism 24, and the winding mechanism 24 is used to wind the ear band into an arc shape; the clamping mechanism 25 is used to clamp the ear band wound on the winding mechanism 24 so that the wire cutting mechanism 27 cuts the ear band; the wire pressing mechanism 23 is used to drive the winding mechanism 24 to rise and fall so as to press the two ends of the cut ear band onto the mask so that the ultrasonic welding device 3 can weld it; the wire stripping mechanism 2 6 is used to detach the welded ear band from the winding mechanism 24; the ear band transmission mechanism 22 includes a first mounting seat 221 fixedly connected to one side of the first mounting frame 21, a material reel 222 arranged on the top of the first mounting seat 221, a third rotating motor 223 installed on one side of the first mounting seat 221, a driving wheel 224 arranged on the other side of the first mounting seat 221 and drivingly connected to the third rotating motor 223, a plurality of guide posts 225 arranged below the driving wheel 224, and a floating wheel 226 movably installed on the plurality of guide posts 225; a tensioning wheel 227 and a driven wheel 228 are also provided on one side of the first mounting seat 221, and the driving wheel 224 is located between the tensioning wheel 227 and the driven wheel 228; a first through hole 229 for the ear band to pass through is also provided on the top of the first mounting seat 221 and the top of the first mounting frame 21.

[0071] The wire pressing mechanism 23 includes a second mounting cross plate 231, a first lifting cylinder 232, a connecting plate 233, a plurality of first lifting guide rods 234, and a plurality of welding head guide rods 235; the second mounting cross plate 231 is arranged on the top of the first mounting frame 21, and the first lifting cylinder 232 is installed on the second mounting cross plate 231; the connecting plate 233 is drivingly connected to the first lifting cylinder 232, one end of the plurality of first lifting guide rods 234 is fixedly connected to the winding mechanism 24, and the other end is movable through the connecting plate 233 and the second mounting cross plate 231 in sequence; one end of the plurality of welding head guide rods 235 is fixedly connected to the connecting plate 233, and the other end is movable through the connecting plate 233 and the second mounting cross plate 231 in sequence; one end of the plurality of welding head guide rods 235 is fixedly connected to the connecting plate 233, and the other end is movable through the connecting plate 233 and the second mounting cross plate 231 in sequence; One end is movably passed through the winding mechanism 24, and the end passing through the winding mechanism 24 is also provided with a welding pressure head 236; the winding mechanism 24 includes a winding seat 241 fixedly connected to one end of a plurality of first lifting guide rods 234, a fourth rotating motor 242 installed on the winding seat 241, a winding disk 243 driven by the fourth rotating motor 242, and a lead wheel 244 fixedly installed on one side of the winding seat 241; the de-wire mechanism 26 includes two second lifting cylinders 261 arranged on the winding seat 241, and a de-wire frame 262 driven by the two second lifting cylinders 261 and arranged near the end of the winding disk 243.

[0072] The clamping mechanism 25 includes two clamping claw modules 251, two third lifting cylinders 252 installed on the winding seat 241, and a wire pressing seat 253 driven and connected to the two third lifting cylinders 252; the two clamping claw modules 251 are arranged vertically and parallel to the length direction of the winding disk 243 and spaced at the top thereof, and the third lifting cylinder 252 is used to drive the wire pressing seat 253 to move up and down to squeeze the clamping claw modules 251 and thus clamp the ear strap; the wire cutting mechanism 27 includes a slide cylinder 271 arranged on one side of the winding disk 243, and a slide cylinder 271 connected to the slide cylinder 271. 1 is driven by a pneumatic scissors 272 located between the two clamping claw modules 251; the ultrasonic welding device 3 includes a first lifting seat 31 arranged below the ear band conveying device 2, a plurality of second lifting guide rods 32 and a plurality of fourth lifting cylinders 33 installed on the first lifting seat 31, a first mounting plate 34 arranged on the plurality of second lifting guide rods 32, an ultrasonic transducer 35 installed on the first mounting plate 34, an ultrasonic steel film 36 connected to the top of the ultrasonic transducer 35, and a cooling fan 37 arranged on one side of the first lifting seat 31.

[0073] Working principle of the present invention:

[0074] Continue to refer to Figures 1 to 11 As shown, in this embodiment, the welding machine also includes an installation platform 4, and the mask transmission device 1, the ultrasonic welding device 3 and the ear band conveying device 2 are all arranged on the installation platform 4; an industrial computer is also provided at one end of the top of the installation platform 4, and casters and foot cups are also provided at the bottom of the installation platform 4.

[0075] Mask transmission device 1: reference Figure 2-4 As shown, the mask transmission device 1 also includes a limiting vertical plate 5, which is arranged on the top of the installation platform 4 in parallel with the first installation vertical plate 111, and a certain interval is left between the limiting vertical plate 5 and the first installation vertical plate 111; the support plate mechanism 12 and the flanging mechanism 14 are both arranged between the limiting vertical plate 5 and the first installation vertical plate 111, and the first telescopic cylinder 142 of the flanging mechanism 14 can drive the flanging rod 143 to push the first side or the second side (the first side is opposite to the second side) of the mask to one side of the limiting vertical plate 5, thereby realizing the folding of the first side or the second side of the mask, which is convenient for the ultrasonic welding device 3 to weld; a discharging stop rod 6 is also provided at one end of the limiting vertical plate 5, and a discharging slide 7 is also provided on one side of the discharging stop rod 6, and the discharging stop rod 6 is used to drop the welded mask from the support plate mechanism 12 to the discharging slide 7, thereby realizing the automatic discharging of the mask.

[0076] During operation, the mask can be put on the carrier plate 123 by an external manipulator (or other transfer device) or manually, and the chain plate conveyor line mechanism 11 can cyclically transfer the carrier plate 123 to between the ear band conveying device 2 and the ultrasonic welding device 3 to complete the welding. Since the chain plate conveyor line mechanism 11 adopts the design of an annular closed structure, the support plate mechanism 12 can be recycled, thereby reducing costs and improving economic benefits; a notch is provided in the middle of the first mounting vertical plate 111, and the flip clamp 133 of the flipping mechanism 13 is arranged in the notch, which can facilitate the flip clamp 133 to clamp the flip block 124, and then drive the flip block 124 and the carrier plate 123 to rotate through the second rotating motor 132; during operation, the mask put on the carrier plate 123 first passes through the flanging rod 143 of one of the flanging mechanisms 14 to flip the first side of the mask Fold, then, the chain plate conveyor line mechanism 11 drives the flanged mask to continue to move, at this time, the flanged vertical plate 144 located between the flanged rod 143 and the ultrasonic welding device 3 can ensure that the first side continues to be in a folded state; when the mask moves between one of the ultrasonic welding devices 3 and the ear strap conveying device 2, the ultrasonic welding device 3 welds the second side of the mask; then, the mask moves to the flipping mechanism 13 (at this time, the first side of the mask is reset), and the flipping mechanism 13 drives the supporting plate 123 to rotate 180 degrees through the flipping clamp 133; then, another flanging mechanism 14 folds the second side of the mask (similar to the above, no further details are given), so that another ultrasonic welding device 3 welds the ear strap to the first side of the mask; finally, the welded mask is separated from the supporting plate 123 to the unloading slide 7 through the discharging stop rod 6 to complete the unloading.

[0077] The ear strap conveying device 2: When working, the tape roll (ear strap roll) can be first placed on the material roll shaft 222, and one end of the ear strap can be passed through the first through hole 229 at the top of the first mounting seat 221; then it can be passed through between the driving wheel 224 and the tensioning wheel 227 and wound to the outside of the floating wheel 226, and then passed through between the driving wheel 224 and the driven wheel 228, and then it can be arranged downward through the first through hole 229 on the first mounting frame 21, and then it can be passed through the lead wheel 244 located on one side of the winding seat 241 to one side of the winding disk 243, and then it can be clamped and fixed by the clamping claw module 251; the outer side of one of the guide columns 225 of the ear strap transmission mechanism 22 A limiting column is provided on the sleeve, and a photoelectric sensor is also provided on the first mounting seat 221 near the driving wheel 224. When the winding drum 243 rotates, the ear strap will be pulled out from the ear strap transmission mechanism 22. Since the driving wheel 224 and the tensioning wheel 227 are in a clamped state, the floating wheel 226 is lifted (rising along the guide column 225). When the photoelectric sensor cannot sense the floating wheel 226, the third rotating motor 223 is immediately started, and then the driving wheel 224 and the tensioning wheel 227 are driven to convey the ear strap downward until the floating wheel 226 falls back to the position of the photoelectric sensor; the limiting column can limit the rising height of the floating wheel 226, and then the length of the ear strap (with great elasticity) that is pulled out can be adjusted.

[0078] One end of the several welding head guide rods 235 of the wire pressing mechanism 23 is fixedly connected to the connecting plate 233, and the other end is movable through the winding seat 241 of the winding mechanism 24. The first lifting cylinder 232 can drive the winding seat 241 to descend through the connecting plate 233 and the first lifting guide rod 234 to push the winding disk 243 against the mask. Since the welding head guide rod 235 can be lifted and lowered relative to the winding seat 241, when the winding seat 241 is against the mask, the pressure of the first lifting cylinder 232 on the connecting plate 233 is transmitted to the top of the welding head guide rod 235, and then the welding head guide rod 235 can be driven to drive the welding pressure head 236 to completely press the mask, thereby facilitating welding; the wire clamping claw module 251 of the clamping mechanism 25 includes two clamping claw bodies hinged to the winding seat 241 (respectively arranged on both sides of the winding disk 243), spring pieces and balls arranged on the clamping claw bodies (to limit them); When the wire seat 253 descends, the clamping claw body can be squeezed to clamp the ear band to the outside of the winding drum 243 so that the wire cutting mechanism 27 can cut it off; when the ear band is clamped by a clamping claw body from the lead wheel 244, the fourth rotating motor 242 drives the winding drum 243 to rotate 180 degrees. At this time, the ear band is wound to the outside of the winding drum 243, and then the wire cutting mechanism 27 cuts the ear band (the pneumatic scissors 272 of the wire cutting mechanism 27 are located between the two clamping claw modules 251, so after the ear band is cut off, the ear band is semicircular (arc-shaped)), then, the wire pressing mechanism 23 drives the winding drum 243 to press against the mask, and the welding pressure head 236 completely presses the two ends of the ear band (the two ends after cutting) to the corresponding positions of the mask, and then, the ultrasonic welding device 3 starts welding. After the welding is completed, the second lifting cylinder 261 drives the wire stripping frame 262 to separate the ear band from the winding drum 243, thereby completing the welding.

[0079] Ultrasonic welding device 3: When welding the ear strap, the fourth lifting cylinder 33 can drive the first lifting seat 31 to drive the ultrasonic steel film 36 to rise so as to weld the ear strap. After welding, the fourth lifting cylinder 33 drives the first lifting seat 31 to drive the ultrasonic steel film 36 to reset; during welding, the cooling fan 37 arranged on one side of the first lifting seat 31 can dissipate heat; in addition, the first lifting seat 31 is also provided with a stroke adjustment rod, which can adjust the rising stroke of the first lifting seat 31, so that it is easy to adjust freely according to the actual use environment, which is simple and convenient.

[0080] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A new type of fully automatic welding machine for mask ear straps, characterized in that: It comprises a mask transmission device, two ear-band transmission devices, and two ultrasonic welding devices; the two ear-band transmission devices are arranged in parallel and at intervals above the mask transmission device, and each ultrasonic welding device is arranged below the ear-band transmission device corresponding to an ear-band transmission device; the mask transmission device comprises a chain plate transmission line mechanism, a plurality of support plate mechanisms arranged at intervals on the chain plate transmission line mechanism for inserting masks, and a flipping mechanism fixedly mounted on the chain plate transmission line mechanism and located between the two ear-band transmission devices; two flanging mechanisms are also fixedly mounted on the chain plate transmission line mechanism, and each flanging mechanism is arranged close to one side of an ear-band transmission device; one of the flanging mechanisms is used to fold the first side of the mask sleeved on the support plate mechanism, so that the ultrasonic welding device arranged close to the flanging mechanism welds the ear band to the second side of the mask opposite to the first side; the flipping mechanism is used to drive the support plate mechanism to drive the mask to flip, so that the other flanging mechanism folds the second side of the mask, and then the ear band is welded to the first side of the mask through another ultrasonic welding device; The ear band conveying device comprises a first mounting frame arranged above the mask conveying device, an ear band conveying mechanism arranged on one side of the first mounting frame, a wire pressing mechanism installed on the first mounting frame, a winding mechanism drivingly connected to the wire pressing mechanism, a clamping mechanism and a wire stripping mechanism installed on the winding mechanism, and a wire cutting mechanism arranged on one side of the winding mechanism; the ear band conveying mechanism is used to convey the ear band to the winding mechanism, and the winding mechanism is used to wind the ear band into an arc shape; the clamping mechanism is used to clamp the ear band wound on the winding mechanism so that the wire cutting mechanism can cut the ear band; the wire pressing mechanism is used to drive the winding mechanism to rise and fall so as to press the two ends of the cut ear band onto the mask so that the ultrasonic welding device can weld it; the wire stripping mechanism is used to detach the welded ear band from the winding mechanism; The ear band transmission mechanism comprises a first mounting seat fixedly connected to one side of the first mounting frame, a material reel arranged on the top of the first mounting seat, a third rotating motor installed on one side of the first mounting seat, a driving wheel arranged on the other side of the first mounting seat and drivingly connected to the third rotating motor, a plurality of guide posts arranged below the driving wheel, and a floating wheel movably installed on the plurality of guide posts; a tensioning wheel and a driven wheel are also provided on one side of the first mounting seat, and the driving wheel is located between the tensioning wheel and the driven wheel; a first through hole for the ear band to pass through is also provided on the top of the first mounting seat and the top of the first mounting frame; The wire pressing mechanism comprises a second mounting horizontal plate, a first lifting cylinder, a connecting plate, a plurality of first lifting guide rods, and a plurality of welding head guide rods; the second mounting horizontal plate is arranged on the top of the first mounting frame, and the first lifting cylinder is installed on the second mounting horizontal plate; the connecting plate is drivingly connected to the first lifting cylinder, one end of the plurality of first lifting guide rods is fixedly connected to the winding mechanism, and the other end thereof is movable through the connecting plate and the second mounting horizontal plate arrangement in sequence; one end of the plurality of welding head guide rods is fixedly connected to the connecting plate, and the other end thereof is movable through the winding mechanism arrangement, and a welding pressure head is also provided at one end thereof passing through the winding mechanism; The winding mechanism includes a winding seat fixedly connected to one end of the plurality of first lifting guide rods, a fourth rotating motor mounted on the winding seat, a winding disk drivingly connected to the fourth rotating motor, and a lead wheel fixedly mounted on one side of the winding seat; the de-wire mechanism includes two second lifting cylinders arranged on the winding seat, and a de-wire frame drivingly connected to the two second lifting cylinders and arranged near the end of the winding disk; The clamping mechanism includes two clamping claw modules, two third lifting cylinders installed on the winding seat, and a wire pressing seat driven by the two third lifting cylinders; the two clamping claw modules are arranged vertically and parallel to the length direction of the winding disk and spaced at the top thereof, and the third lifting cylinder is used to drive the wire pressing seat to move up and down to squeeze the clamping claw modules and then clamp the ear band; the wire cutting mechanism includes a slide cylinder arranged on one side of the winding disk, and a pneumatic scissors driven by the slide cylinder and located between the two clamping claw modules; The ultrasonic welding device includes a first lifting seat arranged below the ear band conveying device, a plurality of second lifting guide rods and a plurality of fourth lifting cylinders installed on the first lifting seat, a first mounting plate arranged on the plurality of second lifting guide rods, an ultrasonic transducer installed on the first mounting plate, an ultrasonic steel film connected to the top of the ultrasonic transducer, and a cooling fan arranged on one side of the first lifting seat.

2. The mask ear strap fully automatic new welding machine according to claim 1 is characterized in that: The chain conveyor line mechanism includes a first mounting vertical plate, a chain conveyor belt arranged on one side of the first mounting vertical plate, and a first rotating motor drivingly connected to the chain conveyor belt; the chain conveyor belt is arranged in a ring-shaped closed manner, and a plurality of support plate mechanisms are arranged at intervals on the chain conveyor belt. The first rotating motor is used to drive the chain conveyor belt to drive the plurality of support plate mechanisms to move cyclically between the ear band conveying device and the ultrasonic welding device.

3. The mask ear strap fully automatic new welding machine according to claim 2 is characterized in that: The support mechanism includes a first fixed seat fixedly connected to the chain conveyor belt, a first rotating shaft arranged perpendicular to the length direction of the first mounting vertical plate and movably inserted in the first fixed seat, a supporting plate fixedly connected to one end of the first rotating shaft for inserting a mask, and a flipping block fixedly connected to the other end of the first rotating shaft; the flipping mechanism is used to drive the supporting plate to rotate via the flipping block and the first rotating shaft.

4. The mask ear strap fully automatic new welding machine according to claim 3 is characterized in that: The flipping mechanism includes a second fixed seat fixedly arranged on one side of the first mounting vertical plate, a second rotating motor installed on the second fixed seat, and a flip clamp for clamping the flipping block driven by the second rotating motor; the flanging mechanism includes a first mounting horizontal plate arranged on the other side of the first mounting vertical plate and located below the supporting plate, a first telescopic cylinder obliquely arranged on the top of the first mounting horizontal plate, a flanging rod driven by the first telescopic cylinder for folding the first side edge or the second side edge of the mask, and a flanging vertical plate arranged parallel to the first mounting vertical plate between the flanging rod and the ultrasonic welding device.

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