A mask ear strap welding machine

Abstract

The present invention relates to the technical field of mask production equipment, in particular to an automatic mask ear strap welding machine, including a mask ear strap welding machine, which comprises a frame, wherein an input device for inputting a mask body is sequentially arranged on the frame according to an assembly line, an ear strap rope traction device is arranged on both sides of the frame for traction of the ear strap rope, an ear strap rope pulling positioning device for guiding the ear strap rope into both sides of the input device, an ear strap rope turning device is arranged on one side of each ear strap rope pulling positioning device to bend the ear strap rope into a U shape and guide it into the end of the mask body, a welding device is arranged on the frame to weld the U-shaped ear strap rope to the mask body, and an output device for outputting the mask with the ear strap welded thereon, the frame is provided with a first lifting device for controlling the up and down lifting of each ear strap rope turning device, the two ear strap rope turning devices are respectively arranged on both sides of the first lifting device, and the lower sides of the first lifting device are further provided with a positioning pressing device for positioning the two ends of the mask body.

Description

Technical Field

[0001] The present invention relates to the technical field of mask production machinery, in particular to a mask ear loop welding machine. Background Art

[0002] Masks typically use ear straps that hook onto the ears, allowing the mask body to fit snugly around the mouth and nose. Therefore, one of the steps in the mask production process is to bend the ear straps into a semicircular shape and then weld the ends to the mask body. However, in the existing technology, mask ear straps are manufactured by manually cutting a small section of ear strap, then holding the ends of the ear strap and welding it to the mask body using a welder. The operator then flips the mask head and welds the other side. This existing manual operation method is extremely inefficient and cannot meet the actual production needs of enterprises. Especially given the current tight supply of masks, this production method is not efficient enough to meet the urgent needs of the current market.

[0003] In order to increase the supply of masks, the present invention is produced. Summary of the Invention

[0004] Therefore, in response to the above problems, the present invention provides a mask ear strap welding machine, the purpose of designing the welding machine is to realize automatic welding of mask ear lines, and improve production efficiency and production quality.

[0005] To solve the above technical problems, the solution adopted by the present invention is: a mask ear strap welding machine, comprising a frame, wherein an input device for inputting a mask body is arranged on the frame in sequence according to the assembly line, an ear strap rope traction device is arranged on both sides of the frame for pulling the ear strap rope, an ear strap rope pulling positioning device for introducing the ear strap rope into both sides of the input device, an ear strap rope turning device is arranged on one side of each ear strap rope pulling positioning device to bend the ear strap rope into a U shape and introduce it into the end of the mask body, a welding device is arranged on the frame to weld the U-shaped ear strap rope to the mask body, and an output device for outputting the mask with welded ear straps, the frame is provided with a first lifting device for controlling the up and down lifting of each ear strap rope turning device, the two ear strap rope turning devices are respectively arranged on both sides of the first lifting device, and the lower sides of the first lifting device are further provided with a positioning and pressing device for positioning the two ends of the mask body.

[0006] A further improvement is that: the first lifting device includes a lifting frame arranged above the input device on the frame, a driving device arranged on the frame to drive the lifting frame to move up and down, the two ear strap rope flipping devices are respectively arranged on both sides of the lifting frame, and the positioning and pressing devices are respectively arranged on the lifting frame on the inner side of the ear strap rope flipping device.

[0007] A further improvement is that each of the positioning and pressing devices is a positioning strip provided on one side of the lifting frame for positioning the two ends of the mask body.

[0008] A further improvement is that each of the welding devices includes an ultrasonic main unit located on one side below the input device, and an ultrasonic welding gun is provided on the frame above the ultrasonic main unit. The ultrasonic welding gun can be raised and lowered on the frame to achieve welding of the ear strap rope bent and positioned on one side of the mask body to the mask body.

[0009] A further improvement is that the input device includes a conveyor chain or conveyor belt wound around the frame, a mask body positioning box continuously arranged above the conveyor chain or conveyor belt, and a limit plate is provided above the mask body positioning box to prevent the mask body from moving upward.

[0010] A further improvement is that: blowing devices for leveling the delivered mask body are provided on both sides below the limiting plate.

[0011] A further improvement is that a limit plate adjustment frame is provided on one side of the front and rear ends of the frame, and the limit plate adjustment frame extends toward the mask body positioning box. The limit plate is locked on each limit plate adjustment frame and can be adjusted up and down by a bolt. The mask body positioning box is provided with an avoidance groove for avoiding the limit plate.

[0012] A further improvement is that each of the ear strap rope flipping devices includes clamps spaced apart on both sides of the first lifting device, and a flip motor or flip cylinder for driving each clamp to flip.

[0013] A further improvement is that each of the ear strap rope traction devices includes a traction plate arranged on one side of the frame, a flip-up introduction frame arranged above the traction plate for positioning the ear strap disc, an active guide wheel for traction of the ear strap rope is provided on the traction plate below the introduction frame, an input wheel and an output wheel are respectively provided on both sides of the active guide wheel on the traction plate, and the traction plate is provided with a U-shaped sliding frame below the active guide wheel, and a traction limiting wheel is provided on the U-shaped sliding frame.

[0014] A further improvement is that the traction limiting wheel is slidably arranged on a U-shaped sliding frame, a limiting rod for limiting the upward sliding of the traction limiting wheel is provided on the U-shaped sliding frame above the traction limiting wheel, and a pull wire in place sensor is provided on the limiting rod.

[0015] A further improvement is that: the active guide wheel is a rubber wheel, and a limiting ring for preventing the ear band disc from sliding out is provided on one side of the introduction frame, and the limiting ring is a rubber wheel.

[0016] A further improvement is that an ear strap rope end introduction frame is provided above the traction plate, and a traction hole is provided on the ear strap rope end introduction frame.

[0017] A further improvement is that the ear strap cord pulling wire positioning device includes a guide seat provided on both sides of the input device on the frame, each of the guide seats is provided with an ear strap cord guide hole, each of the guide seats is provided with a steering wheel below the ear strap cord guide hole for steering the ear strap cord parallel to the input direction, each of the guide seats is provided with a clamping device behind the steering wheel, and a telescopic clamping device for pulling out the ear strap cord is further provided on the frame directly behind each clamping device, and a cutting device for cutting the ear strap cord is provided between the telescopic clamping device and the clamping device.

[0018] A further improvement is that the clamping device includes a lower clamping plate arranged on the introduction seat, the upper part of the lower clamping plate is parallel to the outer peripheral surface of the steering wheel, the introduction seat is located above the lower clamping plate and is provided with an upper clamping plate that can be raised and lowered, and the introduction seat is provided with an upper clamping plate driving device located above the upper clamping plate.

[0019] A further improvement is that the shearing device includes scissors and a rotary cylinder that drives the scissors to perform shearing action.

[0020] A further improvement is that the telescopic clamping device includes a telescopic cylinder or a telescopic motor arranged on the frame, and a pull rope clamp is provided on the piston rod of the telescopic cylinder or the telescopic motor.

[0021] Further improvements are: the output device includes an output rack arranged at the rear of the frame, a conveyor belt is rotatably provided on the output rack, a steering output rack perpendicular to the output rack is provided below the output rack, a counting device is provided on the conveyor belt, and a lifting and positioning device is provided on the output rack above the steering output rack to prevent the mask body from flying out.

[0022] A further improvement is that the lifting and positioning device includes a lifting rod arranged at the rear of the output rack, a lifting plate arranged at the output end of the lifting rod, and guide rods arranged on the output rack on both sides of the lifting rod, and the guide rods are connected to the lifting plate.

[0023] A further improvement is that it also includes a PLC control system, and the input device, ear strap rope traction device, ear strap rope pull wire positioning device, ear strap rope flipping device, welding device, output device, and first lifting device are all electrically connected to the PLC control system.

[0024] By adopting the above technical solution, the beneficial effects of the present invention are: using the present invention has the following advantages:

[0025] 1. In the present invention, the mask body is transported to the welding position under the action of the input device. At the same time, the ear strap is loaded to the welding position through the ear strap rope traction device, the ear strap rope pull positioning device and the ear strap rope flipping device. The welding device adopts ultrasonic welding. When the ultrasonic welding gun is pressed down to make the two ends of the ear strap rope close to the mask body, the ultrasonic host is started to complete the welding. The structure of the present invention is simple and compact. The various devices cooperate with each other through the PLC control system, so that the whole process is highly automated, which effectively improves the production efficiency of the mask.

[0026] 2. In the present invention, the ear strap rope traction device and the welding device are arranged on the frame, the ear strap rope pulling wire positioning device, the ear strap rope flipping device and the positioning and pressing device are arranged on the lifting frame, and the ear strap rope pulling wire positioning device is arranged on both sides of the frame. The motion trajectory between the components of each device is simple and not prone to interference, so that multiple components can be arranged more compactly, thereby greatly reducing the space occupied by the mask machine and further reducing production costs.

[0027] 3. In the present invention, the ear strap rope flipping device and the positioning and pressing device are arranged on the lifting frame. By rising and falling synchronously with the lifting frame, the positioning and pressing device makes the mask body less likely to slide, and the ear strap ends clamped by the ear strap rope flipping device are easier to align with the welding station. The success rate is higher when the welding head is pressed down, and the product defect rate is reduced.

[0028] 4. The ear strap rope traction device and the ear strap rope wire positioning device of the present invention cooperate with each other through a PLC control system. When the ear strap rope wire positioning device pulls the wire into place, the traction limiting wheel in the ear strap rope traction device also synchronously touches the wire pulling position sensor, causing the active guide wheel in the ear strap rope traction device to stop rotating, preventing the ear strap rope from being entangled due to excessive feeding and affecting efficiency, and also ensuring more precise control.

[0029] 5. The present invention adopts ultrasonic welding, which forms micro-amplitude and high-frequency vibrations on the ear straps through ultrasonic waves, and instantly converts them into heat to melt the material to be processed. Finally, the ear straps are permanently adhered or embedded in the mask body, which can firmly adhere the ear straps to the mask body and ensure that the ear straps are not easy to fall off, making the product quality higher.

[0030] 6. The present invention sets a limit bolt in the welding device to limit the cylinder from pushing the second support plate further, ensuring that the ultrasonic welding gun will not collide with the ultrasonic main unit due to excessive descent, thereby causing damage.

[0031] 7. The present invention ensures that the mask body can be placed flat in the mask body positioning box by setting a limit plate and an air blowing nozzle, which does not affect the subsequent welding of the ear strap rope, making the welding position more accurate, preventing dislocation during welding, and reducing the defective rate during the mask welding process.

[0032] 8. The driving motors in the present invention all adopt servo motors. Compared with other motors, servo motors have higher control accuracy, faster response, and better overload resistance, and generate significantly less heat and noise, and are easier to maintain. Therefore, the use of servo motors is conducive to more precise control of the working mechanism, which is conducive to improving the working efficiency of the whole machine and reducing the product defect rate.

[0033] 9. The output device in the present invention inputs the masks on the conveyor track into the accommodating device through the conveyor belt, and then pushes the masks onto the discharge conveyor belt through the lifting plate under the thrust of the lifting rod driven downward by the cylinder, and finally outputs them along the conveyor belt on the steering output rack. The design is ingenious, the space utilization rate is high, the work efficiency is high, and the discharge conveyor belt is arranged perpendicular to the workbench, which is conducive to saving space and improving space utilization.

[0034] 10. The output device of the present invention is provided with a accommodating device for accommodating masks. The accommodating device prevents the masks output from the conveyor belt from flying out, and the output masks are stacked more neatly in the accommodating device, which is convenient for subsequent packaging. A counting sensor for counting the number of masks is also provided, so that the output masks form an output mode in which several masks are grouped together, which is convenient for subsequent packaging of the masks and improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a schematic diagram of the overall structure of a mask ear loop welding machine according to an embodiment of the present invention;

[0036] Figure 2 1 is a front view structural diagram of a rack according to an embodiment of the present invention;

[0037] Figure 3 This is a schematic diagram of the local connection structure of the positioning and pressing device according to an embodiment of the present invention;

[0038] Figure 4 1 is a schematic diagram of the structure of a welding device according to an embodiment of the present invention;

[0039] Figure 5 This is a schematic structural diagram of an ear strap rope traction device according to an embodiment of the present invention;

[0040] Figure 6 Schematic diagram of the structure of the clamping device and the shearing device according to an embodiment of the present invention;

[0041] Figure 7 is a schematic structural diagram of an output device according to an embodiment of the present invention;

[0042] Figure 8 It is a rear view of the output device according to the embodiment of the present invention. DETAILED DESCRIPTION

[0043] The present invention will now be further described with reference to the accompanying drawings and specific embodiments.

[0044] refer to Figures 1 to 8 A mask ear strap welding machine includes a frame 1, wherein an input device for inputting a mask body is arranged on the frame in sequence according to the assembly line, an ear strap rope traction device is arranged on both sides of the frame for pulling the ear strap rope, an ear strap rope pulling and positioning device is used to guide the ear strap rope into both sides of the input device, an ear strap rope turning device is arranged on one side of each ear strap rope pulling and positioning device to bend the ear strap rope into a U shape and guide it into the end of the mask body, a welding device is arranged on the frame to weld the U-shaped ear strap rope to the mask body, and an output device is used to output the mask with welded ear straps. The frame is provided with a first lifting device for controlling the up and down lifting of each ear strap rope turning device, the two ear strap rope turning devices are respectively arranged on both sides of the first lifting device, and a positioning and pressing device for positioning the two ends of the mask body is also provided on both sides below the first lifting device.

[0045] refer to Figure 1 、 Figure 2 The first lifting device includes a lifting frame 801 provided above the input device on the frame 1, and a driving device provided on the frame to drive the lifting frame 801 to move up and down. The driving device includes a rotary motor 802, a cam 803, a first connecting rod 804 and a second connecting rod 805. The rotary motor 802 is connected to the cam 803, the cam 803 is rotatably connected to the first connecting rod 804, the first connecting rod 804 is rotatably connected to the second connecting rod 805, and the second connecting rod 805 is fixedly connected to the lifting frame 801.

[0046] The two ear strap rope flipping devices are respectively arranged on both sides of the lifting frame 801, and the positioning and pressing devices are respectively arranged on the lifting frame 801 and located on the inner side of the ear strap rope flipping device.

[0047] Reference 1. Figure 3 Each of the positioning and pressing devices is a positioning strip 901 provided on one side of the lifting frame 801 for positioning the two ends of the mask body. Each of the positioning strips 901 is fastened to the lifting frame 801 through a U-shaped connecting frame 902. The setting direction of each of the positioning strips 901 is parallel to the input running direction. After the positioning strips 901 are lowered by the lifting frame 801, the two ends of the mask body can be pressed, so that the mask body is not easy to slide and is convenient for welding.

[0048] refer to Figure 2 、 Figure 3 、 Figure 4, each of the welding devices includes an ultrasonic main unit 601 provided on one side below the input device, an ultrasonic welding gun 602 is provided on the frame 1 above the ultrasonic main unit 601, and the ultrasonic welding gun 602 can be lifted up and down and is provided on the frame 1 to realize welding the ear strap rope bent and positioned on one side of the mask body to the mask body, and there are two ultrasonic welding guns 602 in each of the welding devices, and the ultrasonic welding guns 602 are arranged side by side in a direction parallel to the conveying direction, and each of the welding devices also includes a cylinder 603 for lifting the ultrasonic welding gun 602, and a first support plate 604 for placing the cylinder 603, the end of the cylinder 603 push rod is fixedly connected to a second support plate 605, and the second support plate 605 is fixedly connected to each of the ultrasonic welding guns 602, the first support plate 604 is fixedly connected to the frame 1, and a welding guide rod 606 is provided on each side of the cylinder 603 on the first support plate 604, each The welding guide rod 606 passes through the first support plate 604 and is fixedly connected to the second support plate 605. By providing the welding guide rod 606, it is ensured that the cylinder 603 will not deflect during the process of driving the second support plate 605 to rise and fall, and it is ensured that each ultrasonic welding gun 602 can fall correctly on the welding position; the upper end surface of each welding guide rod 606 is flush and fixedly connected with a third support plate 607, and the third support plate 607 is higher than the cylinder 603. A limiting bolt 608 is provided on the third support plate 607 above the cylinder 603. The limiting bolt 608 is raised and lowered following the third support plate 607 through each welding guide rod 606. When the limiting bolt 608 abuts against the cylinder 603, it limits the cylinder 603 from continuing to push the second support plate 605, thereby ensuring that the ultrasonic welding gun 602 will not collide with the ultrasonic host 601 due to excessive descent, thereby causing damage.

[0049] refer to Figure 1 The input device includes a conveyor chain (not shown in the figure) wound around the frame 1, a mask body positioning box 201 continuously arranged above the conveyor chain, a limit plate 202 is provided above the mask body positioning box 201 to prevent the mask body from moving upward, and air blowing nozzles 203 are provided on both sides below the limit plate 202 to flatten the conveyed mask body. The air blowing nozzle 203 is connected to the fan through an external air pipe (not shown in the figure). By providing the limit plate 202 and the air blowing nozzle 203, it is ensured that the mask body can be placed flat in the mask body positioning box 201 without affecting the subsequent welding of the ear strap rope; a limit plate adjustment frame 204 is provided at intervals on one side of the front and rear ends of the frame 1, and the limit plate adjustment frame 204 extends toward the mask body positioning box 201. The limit plate 202 is locked on each limit plate adjustment frame 204 by a bolt that can be adjusted up and down, and an avoidance groove 205 for avoiding the limit plate 202 is opened on the mask body positioning box 201.

[0050] refer to Figure 1 、 Figure 2 Each of the ear strap rope flipping devices includes clamping claws 501 spaced apart on both sides of the lifting frame 801 of the first lifting device, and a flipping motor 502 for driving each clamping claw to flip. Each of the flipping motors 502 is fastened to the lifting frame 801 through a mounting plate 503. The output end of each flipping motor 502 passes through the mounting plate 503 and is rotatably connected to each of the clamping claws 501. Each of the flipping motors 502 synchronously drives each of the clamping claws 501 to flip.

[0051] refer to Figure 1 、 Figure 2 、 Figure 5 Each ear strap rope traction device includes a traction plate 301 provided on one side of the frame 1, and a flip-up introduction frame 302 provided above the traction plate 301 for positioning the ear strap disc 313. An active guide wheel 303 for traction of the ear strap rope is provided on the traction plate 301 below the introduction frame 302. The active guide wheel 303 is a rubber wheel, and the active guide wheel 303 is driven by a rotating motor. The input wheel 304 and the output wheel 305 are respectively provided on both sides of the active guide wheel 303 on the traction plate. The traction plate 301 is provided with a U-shaped sliding frame 306 below the active guide wheel 303. A traction limiting wheel 307 is provided on the U-shaped sliding frame 306. The traction limiting wheel 307 can be slidably provided on the U-shaped sliding frame 306. A limit rod 308 is provided on the sliding frame 306 above the traction limit wheel 307 to limit the upward sliding of the traction limit wheel 307. A pull wire in place sensor 309 is provided on the limit rod 308. An ear strap rope end introduction frame 311 is also provided above the traction plate 301. A traction hole 312 is provided on the ear strap rope end introduction frame 311. A limit ring 310 is provided on one side of the introduction frame 302 to prevent the ear strap disc 313 from sliding out. The limit ring 310 is made of rubber wheels, and its material is used to increase friction to ensure that the ear strap disc 313 is not easy to slide out of the introduction frame 302. Because the rubber wheels are ductile, they can be pulled apart and easily removed from the introduction frame 302.

[0052] refer to Figure 1 、 Figure 6The ear strap cord pulling wire positioning device includes an introduction seat 401 provided on both sides of the input device on the frame 1, and each of the introduction seats 401 is provided with an ear strap cord introduction hole 402, and each of the introduction seats 401 is provided with a steering wheel 403 for steering the ear strap cord to be parallel to the input direction below the ear strap cord introduction hole 402, and each of the introduction seats 401 is provided with a clamping device behind the steering wheel 403, and the clamping device includes a lower clamping plate 404 provided on the introduction seat 401, and the upper part of the lower clamping plate 404 is parallel to the outer circumference of the steering wheel 403, and the introduction seat 401 is located at the lower clamping An upper clamping plate 405 is provided above the plate 404 and can be raised and lowered. An upper clamping plate driving motor 406 is provided on the guide seat above the upper clamping plate 405. A telescopic clamping device for pulling out the ear strap rope is also provided on the frame 1 directly behind each clamping device. The telescopic clamping device includes a telescopic motor 407 provided on the frame 1, and a rope clamp 408 is provided on the piston rod of the telescopic motor 407. A cutting device for cutting the ear strap rope is provided between the telescopic clamping device and the clamping device, and the cutting device includes scissors 409 and a rotating cylinder 410 that drives the scissors to perform the shearing action.

[0053] refer to Figure 1 、 Figure 7 、 Figure 8 The output device includes an output rack 701 provided at the rear of the frame 1, a conveyor belt 702 is rotatably provided on the output rack 701, a steering output rack 703 perpendicular to the output rack 701 is provided below the output rack 701, a conveyor belt 711 for outputting masks is wound around the steering output rack 703, a counting device 704 is provided on the conveyor belt, and a accommodating device for preventing the mask body from flying out of the temporary stacking mask body is provided on the output rack 701 above the steering output rack 703, the accommodating device includes a left accommodating bin 708 and a right accommodating bin 709, the left end of the left accommodating bin 708 and the right accommodating bin 709, The right end of 09 is rotatably connected to the output rack 701 through a rotating motor 710, the left accommodating bin 708 is flush with the right accommodating bin 709, the bottom surfaces of the left accommodating bin 708 and the right accommodating bin 709 are lower than the upper surface of the conveyor belt 702, and a lifting and positioning device for pushing out the mask body is provided on the output rack 701 above the accommodating device. The lifting and positioning device includes a lifting rod 705 provided at the rear of the output rack, a lifting plate 706 provided at the output end of the lifting rod, and a guide rod 707 provided on both sides of the lifting rod on the output rack. The guide rod 707 is connected to the lifting plate 706, and the lifting rod 705 is driven by a cylinder.

[0054] The present invention also includes a PLC control system (shown in the figure), and the input device, ear strap rope traction device, ear strap rope pull wire positioning device, ear strap rope flipping device, welding device, output device, and first lifting device are all electrically connected to the PLC control system.

[0055] Working principle: When welding the ear strap to the mask body using the mask ear strap welding machine according to the embodiment of the present invention, the ear strap is exemplified as follows using one side of the mask body. The ear strap rope is pulled out from the ear strap disc 313 in the ear strap rope traction device and passes through the traction hole 312 on the ear strap rope end introduction frame 311, and then passes between the active guide wheel 303 and the input wheel 304. After bypassing the traction limiting wheel 307, it enters the ear strap rope pulling wire positioning device from the output wheel 305. The ear strap rope enters the ear strap rope pulling wire positioning device and first passes through the ear strap rope introduction hole 402 on the introduction seat 401, and then passes through the clamping device after being turned by the steering wheel 403. The ear strap rope is clamped by the upper clamping plate 405 and the lower clamping plate 404. The telescopic clamping device is directly behind the clamping device. The telescopic rod of the telescopic motor 407 is extended to drive the rope clamping claw 408 to the front of the clamping device to clamp the ear strap rope and then pull it back. The active guide wheel 303 in the ear strap rope traction device is driven by the rotary motor to start rotating and cooperate with the input wheel 304 to drive the ear strap rope to start moving. In the process of the telescopic clamping device pulling back the ear strap rope, the traction limiting wheel 307 is driven by the ear strap rope to slide upward on the U-shaped sliding frame 306. When the telescopic clamping device pulls the ear strap rope to the preset position, the traction limiting wheel 307 also touches the wire in place sensor 309 on the limit rod 308, the active guide wheel 303 stops rotating, and the traction limiting wheel 307 falls to the initial position. The flip motor 502 on the lifting frame 801 in the device drives the clamping claw 501 to flip to the telescopic clamping device to pull back above the ear strap rope, and at the same time, the rotating motor 802 drives the lifting frame 801 to start descending. After the clamping claw 501 clamps the ear strap rope, the rotating cylinder 410 in the cutting device next to the introduction seat drives the scissors 409 to cut the ear strap rope, and then the lifting frame 801 rises and the flip motor 502 drives the clamping claw 501 to flip back above the input device to flip the ear strap rope into a U shape. At this time, the mask body is placed on the mask body positioning box 201, blows and flattens through the blowing nozzle 203 on the limit plate 202, and then follows the conveyor chain drive to enter the welding position above the ultrasonic host 601. 801 descends again and places the two ends of the ear strap rope clamped by the clamping claw 501 on the two ends of the mask body. The positioning pressure strip 901 on the lifting frame 801 is also pressed down synchronously to position the two ends of the mask body on the ultrasonic host 601. At the same time, the ultrasonic welding gun 602 descends under the push of the cylinder 603, and presses the two ends of the ear strap rope on the ultrasonic host 601. The ultrasonic host 601 starts to complete the welding, and the ultrasonic welding gun 602 rises and resets. The clamping claw 501 is released and follows the lifting frame 801 to rise. The welded mask is transported to the output device along the conveyor chain. After that, the next mask body enters the welding position and the rope clamp 408 reaches the front of the clamping device to clamp the ear strap rope and then pull it back to repeat the above operation.

[0056] After the ear straps are welded, the masks enter the output device, pass through the conveyor belt 702, and enter the storage device. The counting sensor 704 located above the conveyor belt 702 starts counting. When the number of masks entering the storage device reaches a preset value, the lifting plate 706 located above the storage device is lowered by the lifting rod 705 pushed by the cylinder. At the same time, the left and right storage bins of the storage device are opened, and the masks are pushed by the lifting plate 706 to the steering output rack 703. On the steering output rack 703, a plurality of masks are formed as a group for output, which is convenient for subsequent packaging of the masks.

[0057] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A mask ear loop welding machine, comprising a frame, characterized in that: An input device for inputting a mask body is sequentially arranged on the frame according to the assembly line, an ear strap rope traction device is arranged on both sides of the frame for traction of the ear strap rope, an ear strap rope pull line positioning device is used to guide the ear strap rope into both sides of the input device, an ear strap rope flipping device is arranged on one side of each ear strap rope pull line positioning device to bend the ear strap rope into a U shape and guide it into the end of the mask body, a welding device is arranged on the frame to weld the U-shaped ear strap rope to the mask body, and an output device is outputted for welding the mask with the ear strap. The frame is provided with a first lifting device for controlling the up and down lifting of each ear strap rope flipping device, and the two ear strap rope flipping devices are respectively arranged on both sides of the first lifting device. Positioning and pressing devices for positioning the two ends of the mask body are also provided on both sides below the first lifting device. The first lifting device includes a lifting frame provided on the frame above the input device, a driving device provided on the frame to drive the lifting frame up and down, the two ear strap rope flipping devices are respectively provided on both sides of the lifting frame, and the positioning and pressing devices are respectively provided on the lifting frame and located on the inner side of the ear strap rope flipping device; each positioning and pressing device is a positioning strip provided on one side of the lifting frame for positioning the two ends of the mask body; The output device includes an output rack provided at the rear of the frame, a conveyor belt is rotatably provided on the output rack, a steering output rack perpendicular to the output rack is provided below the output rack, a counting device is provided on the conveyor belt, a receiving device for preventing the mask body from flying out and temporarily stacking the mask body is provided on the output rack above the steering output rack, and a lifting and positioning device for pushing the mask body out is provided on the output rack above the receiving device; The accommodating device includes a left accommodating bin and a right accommodating bin, the left end of the left accommodating bin and the right end of the right accommodating bin are rotatably connected to the output rack via a rotary motor, the left accommodating bin and the right accommodating bin are flush, and the bottom surfaces of the left accommodating bin and the right accommodating bin are lower than the upper surface of the conveyor belt; The lifting and positioning device includes a lifting rod arranged at the rear of the output frame, a lifting plate arranged at the output end of the lifting rod, and guide rods arranged on the output frame at both sides of the lifting rod, and the guide rods are connected to the lifting plate.

2. A mask ear loop welding machine according to claim 1, characterized in that: Each of the welding devices includes an ultrasonic main unit located on one side below the input device, and an ultrasonic welding gun is provided on the frame above the ultrasonic main unit. The ultrasonic welding gun can be raised and lowered on the frame to weld the ear strap rope bent and positioned on one side of the mask body to the mask body.

3. A mask ear loop welding machine according to claim 1, characterized in that: The input device includes a conveyor chain or conveyor belt wound around the frame, and a mask body positioning box continuously arranged above the conveyor chain or conveyor belt. A limiting plate is provided above the mask body positioning box to prevent the mask body from moving upward.

4. A mask ear loop welding machine according to claim 3, characterized in that: Air blowing devices for leveling the delivered mask body are provided on both sides below the limiting plate.

5. A mask ear loop welding machine according to claim 3, characterized in that: A limit plate adjustment frame is provided on one side of the front and rear ends of the frame, and the limit plate adjustment frame extends toward the mask body positioning box. The limit plate is locked on each limit plate adjustment frame and can be adjusted up and down by a bolt. The mask body positioning box is provided with an avoidance groove for avoiding the limit plate.

6. A mask ear loop welding machine according to claim 1, characterized in that: Each of the ear strap rope turning devices includes clamps arranged at intervals on both sides of the first lifting device, and a turning motor or a turning cylinder for driving each clamp to turn.

7. A mask ear loop welding machine according to claim 1, characterized in that: Each of the ear strap rope traction devices includes a traction plate arranged on one side of the frame, a flip-up introduction frame arranged above the traction plate for positioning the ear strap disc, an active guide wheel for traction of the ear strap rope is provided below the introduction frame on the traction plate, and an input wheel and an output wheel are respectively provided on both sides of the active guide wheel on the traction plate, and a U-shaped sliding frame is provided on the traction plate below the active guide wheel, and a traction limiting wheel is provided on the U-shaped sliding frame.

8. A mask ear loop welding machine according to claim 7, characterized in that: The traction limiting wheel is slidably arranged on a U-shaped sliding frame. A limiting rod for limiting the upward sliding of the traction limiting wheel is provided on the U-shaped sliding frame and located above the traction limiting wheel. A wire-pull-in-place sensor is provided on the limiting rod.

9. A mask ear loop welding machine according to claim 7, characterized in that: The active guide wheel is a rubber wheel, and a limiting ring for preventing the ear band disc from sliding out is provided on one side of the introduction frame, and the limiting ring is a rubber wheel.

10. A mask ear loop welding machine according to claim 7, characterized in that: An ear strap rope end introduction frame is also provided above the traction plate, and a traction hole is opened on the ear strap rope end introduction frame.

11. A mask ear loop welding machine according to claim 1, characterized in that: The ear strap cord pulling wire positioning device includes a guide seat arranged on both sides of the input device on the frame, each of the guide seats is provided with an ear strap cord guide hole, each of the guide seats is provided with a steering wheel below the ear strap cord guide hole to turn the ear strap cord parallel to the input direction, each of the guide seats is provided with a clamping device behind the steering wheel, and the frame is further provided with a telescopic clamping device for pulling out the ear strap cord directly behind each clamping device, and a cutting device for cutting the ear strap cord is provided between the telescopic clamping device and the clamping device.

12. A mask ear loop welding machine according to claim 11, characterized in that: The clamping device includes a lower clamping plate arranged on the introduction seat, the upper part of the lower clamping plate is parallel to the outer peripheral surface of the steering wheel, the introduction seat is located above the lower clamping plate and is provided with an upper clamping plate that can be raised and lowered, and the introduction seat is provided with an upper clamping plate driving device located above the upper clamping plate.

13. The mask ear loop welding machine according to claim 11, characterized in that: The shearing device comprises scissors and a rotary cylinder for driving the scissors to perform shearing action.

14. The mask ear loop welding machine according to claim 11, characterized in that: The telescopic clamping device comprises a telescopic cylinder or a telescopic motor arranged on a frame, and a pull rope clamp is provided on the piston rod of the telescopic cylinder or the telescopic motor.

15. The mask ear loop welding machine according to claim 1, characterized in that: It also includes a PLC control system, and the input device, ear strap rope traction device, ear strap rope pull wire positioning device, ear strap rope flipping device, welding device, output device, and first lifting device are all electrically connected to the PLC control system.

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