A mask ear line feeding and welding mechanism

Abstract

The present invention discloses a mask ear wire feeding and welding mechanism, comprising: a cabinet, a conveyor belt assembly arranged on the cabinet, a bracket spanning the cabinet, and an ear wire transfer assembly and an ear wire welding assembly connected to the bracket; the cabinet is also provided with an ear wire feeding assembly, the ear wire feeding assembly pulls out and straightens the external ear wire material, the ear wire transfer assembly is used to clamp and transfer the ear wire straightened by the ear wire feeding assembly to the connection on the surface of the mask body, the ear wire welding assembly is used to weld the ear wire transferred by the ear wire transfer assembly to the mask body, and the conveyor belt assembly is used to send the mask body of the previous station one by one to the bottom of the ear wire welding assembly for ear wire welding. Compared with the prior art, the mask ear wire feeding and welding mechanism of the present invention realizes the automation process of ear wire feeding and welding in mask production through the conveyor belt assembly, the ear wire feeding assembly, the ear wire transfer assembly and the ear wire welding assembly, thereby improving production efficiency and quality.

Description

Technical Field

[0001] The invention relates to the technical field of mask production equipment, and in particular to a mask ear line material and welding mechanism. Background Art

[0002] Masks are a kind of medical and civilian products with high frequency of use. In the production of masks, the process from semi-automatic to fully automated has been gradually realized. Among them, the ear wire feeding and connection mechanism are relatively complicated, which is also a relatively important step in the mask process. For this reason, it is necessary to design a composite fully automated production ear wire feeding and fixed connection equipment. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a mask ear wire feeding and welding mechanism, which solves the technical problems of fully automatic ear wire feeding and connection and fixation in the prior art.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] A mask ear wire feeding and welding mechanism comprises: a cabinet, a conveyor belt assembly arranged on the cabinet, a bracket spanning the cabinet, and two ear wire transfer assemblies and two ear wire welding assemblies connected to the bracket and arranged opposite to each other; wherein the cabinet is also provided with two ear wire feeding assemblies located on both sides of the conveyor belt assembly, wherein one ear wire feeding assembly, an ear wire transfer assembly and an ear wire welding assembly constitute a welding mechanism on one side of the mask, and the other ear wire feeding assembly, an ear wire transfer assembly and an ear wire welding assembly constitute a welding mechanism on the other side of the mask, the ear wire feeding assembly pulls out and straightens the external ear wire material, the ear wire transfer assembly is used to clamp and transfer the ear wire straightened by the ear wire feeding assembly to the connection position on the surface of the mask body, the ear wire welding assembly is used to weld the ear wire transferred by the ear wire transfer assembly to the mask body, and the conveyor belt assembly is used to send the mask body of the previous station one by one to the bottom of the ear wire welding assembly for ear wire welding.

[0006] Among them, the conveyor belt assembly includes: a chain belt composed of a number of chain plates hinged at the head and tail, a chain connected to the back of the chain belt, a gear meshed with the chain, and a driving motor that drives the gear to rotate; the chain plate is provided with a receiving groove that can accommodate the mask body, so that the mask body can be sent one by one to the bottom of the ear wire welding assembly for welding under the drive of the driving motor.

[0007] Wherein, the ear wire feeding assembly includes: a guide rail connected to the cabinet, a slider that can slide along the guide rail, a first cylinder connected to the slider, a clamping claw provided on the first cylinder, and an ear wire cutting device and an ear wire end fixing device provided on the guide rail; wherein, the first cylinder is used to drive the clamping claw to move forward along the guide rail direction to the ear wire end fixing device to clamp the ear wire end, and reset to stretch and straighten the ear wire, the ear wire cutting device is used to cut the ear wire after stretching and straightening, and the ear wire end fixing device is used to clamp and fix the ear wire end before the ear wire cutting device cuts the straightened and stretched ear wire.

[0008] Wherein, the clamping claw comprises: a clamping cylinder and a claw head which is opened or closed by the clamping cylinder.

[0009] Among them, the ear wire cutting device includes: a shearing cylinder connected to a guide rail, and a pair of scissors whose opening and closing are controlled by the shearing cylinder, one of the handles of the scissors is connected to the telescopic end of the shearing cylinder, and the other handle is connected to the guide rail, the ear wire extending from the ear wire end fixing device passes through the blades of the scissors in an open state, and the shearing cylinder drives the handles of the scissors so that the scissors close and cut the ear wire.

[0010] Among them, the ear wire end fixing device includes: a clamping plate cylinder connected to the guide rail, an upper clamping plate controlled by the clamping plate cylinder, and a lower clamping plate corresponding to the upper clamping plate. One end of the external ear wire material is clamped and fixed between the upper clamping plate and the lower clamping plate. The clamping plate cylinder controls the movement of the upper clamping plate so that the upper clamping plate and the lower clamping plate open and close.

[0011] Among them, the ear wire transfer assembly includes: a support plate connected to the bracket, a telescopic cylinder fixed on the support plate, a fixed frame controlled by the telescopic end of the telescopic cylinder, and two rotating clamping assemblies are arranged in the fixed frame. The rotating clamping assemblies are used to perform a rotation action to clamp the ear wire on the ear wire feeding assembly and transfer it to the ear wire welding assembly for welding.

[0012] Among them, the rotating clamping assembly includes: a connecting shaft arranged on a fixed frame, the upper end of the connecting shaft is a controlled end, the upper end is provided with a gear and a rack meshing with the gear, the lower end is connected with an opening and closing cylinder, the opening and closing cylinder drives a clamp, the upper end of the connecting shaft is controlled to rotate, synchronously driving the opening and closing cylinder to rotate, and the opening and closing cylinder drives the clamp to open and close to realize the ear wire clamping and placement action.

[0013] Among them, the bracket is also provided with a central flattening assembly, and the central flattening assembly includes: a connecting plate, a connecting column arranged on the top surface of the connecting plate, the connecting column is connected to the bracket, a lifting cylinder fixed on the connecting plate, a first pressing plate connected to the telescopic end of the lifting cylinder, a second pressing plate connected to the first pressing plate through a plurality of connecting columns, and a spring is also sleeved on the connecting column, wherein a plurality of guide rods are also provided between the first pressing plate and the connecting plate, the lower end of the guide rod is connected to the first pressing plate, and the upper end is passed through the guide hole on the connecting plate, when the ear wire welding assembly welds the ear wire, the second pressing plate is controlled by the lifting cylinder to move downward to press the mask body.

[0014] Among them, the ear wire welding assembly includes: a first connecting plate, a longitudinal cylinder fixed on the first connecting plate, a second connecting plate connected to the telescopic end of the longitudinal cylinder, and two ultrasonic welding joints on the second connecting plate. Among them, a number of guide columns are also provided between the second connecting plate and the first connecting plate, and the lower end of the guide column is connected to the second connecting plate, and the upper end is passed through the first connecting plate.

[0015] Compared with the prior art, the ear wire feeding and welding mechanism of the mask of the present invention realizes the automated process of ear wire feeding and welding in mask production through a conveyor belt assembly, an ear wire feeding assembly, an ear wire transfer assembly and an ear wire welding assembly, thereby improving production efficiency and quality.

[0016] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the following preferred embodiments are specifically cited and described in detail as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the mask ear wire feeding and welding mechanism of the present invention.

[0018] Figure 2 This is a structural schematic diagram of the mask ear wire feeding and welding mechanism of the present invention without the cabinet part.

[0019] Figure 3 It is a partial structural schematic diagram of the ear wire feeding assembly of the mask ear wire feeding and welding mechanism of the present invention.

[0020] Figure 4 It is a partial structural schematic diagram of the ear wire transfer component of the mask ear wire feeding and welding mechanism of the present invention.

[0021] Figure 5 It is a partial structural schematic diagram of the central flattening component of the mask ear wire feeding and welding mechanism of the present invention.

[0022] Figure 6It is a partial structural schematic diagram of the ear wire welding assembly of the mask ear wire feeding and welding mechanism of the present invention.

[0023] Figure 7 It is a partial structural schematic diagram of the conveyor belt assembly of the mask ear wire feeding and welding mechanism of the present invention. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0026] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0027] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0028] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be connected, detachably connected, or integrated; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0030] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms should not be understood as necessarily referring to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification.

[0031] See also Figures 1 to 7 In this embodiment, an embodiment of the present invention provides a mask ear wire feeding and welding mechanism, which includes: a cabinet 61, a conveyor belt assembly 62 arranged on the cabinet 61, a bracket 63 straddling the cabinet, and two ear wire transfer assemblies 65 and two ear wire welding assemblies 67 connected to the bracket 63 and arranged opposite to each other; wherein, the cabinet 61 is also provided with two ear wire feeding assemblies 64 located on both sides of the conveyor belt assembly 62, wherein one ear wire feeding assembly, ear wire transfer assembly and ear wire welding assembly constitute the welding mechanism on one side of the mask, and the other ear wire feeding assembly, ear wire transfer assembly and ear wire welding assembly constitute the welding mechanism on the other side of the mask. Since there are two ear wires for a mask, the above two sets of welding mechanisms need to work simultaneously to improve efficiency. The ear wire feeding assembly 64 pulls out and straightens the external ear wire material. Specifically, the ear wire material is rolled and placed on the wire loading shaft 632 on the bracket 63, and the bracket 63 is also provided with a power roller 631 for pulling out the ear wire material. The ear wire transfer assembly 65 is used to clamp the ear wires straightened by the ear wire feeding assembly 64 and transfer them to the connection point on the surface of the mask body. The ear wire welding assembly 67 is used to weld the ear wires transferred by the ear wire transfer assembly 64 to the mask body. The conveyor belt assembly 62 is used to send the mask body of the previous workstation one by one to the bottom of the ear wire welding assembly 67 for ear wire welding.

[0032] Please refer again Figure 7The conveyor assembly 621 includes: a chain belt 6212 composed of a plurality of chain plates 6212 hinged at the head and tail, a chain 6213 connected to the back of the chain belt 6212, a gear 6214 meshed with the chain 6213, and a driving motor (not shown) driving the gear 6214 to rotate; a receiving groove for accommodating the mask body is provided on the chain plate 6211, so that the mask bodies are sent one by one to the bottom of the ear wire welding assembly 67 for welding under the drive of the driving motor. A receiving groove is provided on the top of the chain plate 6211, and the receiving groove can accommodate a mask body.

[0033] Please refer again Figure 3 The ear wire feeding assembly 64 includes: a guide rail 641 connected to the cabinet 61, a slider 642 that can slide along the guide rail 641, a first cylinder 645 connected to the slider 642, a clamping jaw 6430 provided on the first cylinder 645, and an ear wire cutting device 6460 and an ear wire end fixing device 6480 provided on the guide rail 641. The first cylinder 645 is used to drive the clamping jaw 6430 to move forward along the guide rail 641 to the ear wire end fixing device 6480 to clamp the ear wire end, and reset to stretch and straighten the ear wire, the ear wire cutting device 6460 is used to cut the stretched and straightened ear wire, and the ear wire end fixing device 6480 is used to clamp and fix the ear wire end before the ear wire cutting device 6460 cuts the straightened and stretched ear wire, so that the clamping jaw 6430 can stretch and straighten the ear wire again next time.

[0034] Specifically, the clamping jaw 6430 includes: a clamping cylinder 643 , and a claw head 644 that is opened or closed by the clamping cylinder 643 .

[0035] Among them, the ear wire cutting device 6460 includes: a shearing cylinder 646 connected to the guide rail 641, and a pair of scissors 647 whose opening and closing is controlled by the shearing cylinder 646, one of the handles of the scissors 647 is connected to the telescopic end of the shearing cylinder 646, and the other handle is connected to the guide rail 641, the ear wire extending from the ear wire end fixing device 6480 passes through the blades of the scissors 647 in the open state, and the handles of the scissors 647 are driven by the shearing cylinder 646 so that the scissors close and cut the ear wire.

[0036] Specifically, the ear wire end fixing device 6480 includes: a clamping plate cylinder 648 connected to the guide rail 641, an upper clamping plate 640 controlled by the clamping plate cylinder 648, and a lower clamping plate 649 corresponding to the upper clamping plate 640. One end of the external ear wire material is clamped and fixed between the upper clamping plate 640 and the lower clamping plate 649. The clamping plate cylinder 648 controls the movement of the upper clamping plate 640 so that the upper clamping plate 640 and the lower clamping plate 649 can be opened and closed. The ear wire end fixing device 6480 is used to clamp one end of the ear wire coil on the bracket so as to cooperate with the clamping claw 6430 to realize the straightening and cutting of a single ear wire.

[0037] Please refer again Figure 4 The ear wire transfer assembly 65 includes: a support plate 651 connected to the bracket 63, a telescopic cylinder 652 fixed on the support plate 651, and a fixed frame 654 controlled by the telescopic end of the telescopic cylinder 652. Two rotating clamping assemblies 655 and 656 are arranged in the fixed frame 654. The rotating clamping assemblies 655 and 656 are used to perform a rotation action to clamp the ear wire on the ear wire feeding assembly 64 and transfer it to the ear wire welding assembly 67 for welding.

[0038] Furthermore, the rotating clamping assembly 655 and the rotating clamping assembly 656 have the same structure, and both include: a connecting shaft 6551 arranged on the fixed frame 654, the upper end of the connecting shaft 6551 is a controlled end, the upper end is provided with a gear 6552 and a rack 6553 meshing with the gear 6551, and the lower end is connected to an opening and closing cylinder 6554, and the opening and closing cylinder 6554 drives a clamp 6555, and the upper end of the connecting shaft 6551 rotates in a controlled manner, synchronously driving the opening and closing cylinder 6554 to rotate, and the opening and closing cylinder 6554 drives the clamp 6555 to open and close to realize the ear wire clamping and placement action.

[0039] Please refer again Figure 2 and Figure 5 The bracket 63 is also provided with a central flattening assembly 66, which includes: a connecting plate 661, a connecting column 663 provided on the top surface of the connecting plate 661, the connecting column 663 is connected to the bracket 63, a lifting cylinder 662 fixed on the connecting plate 661, a first pressing plate 665 connected to the telescopic end of the lifting cylinder 662, and a second pressing plate 668 connected to the first pressing plate 665 through a plurality of connecting columns 666, and a spring 667 is also sleeved on the connecting column 666, and the second pressing plate 668 elastically flattens the surface of the mask. Among them, a plurality of guide rods 664 are also provided between the first pressing plate 665 and the connecting plate 661, the lower end of the guide rod 664 is connected to the first pressing plate 665, and the upper end is penetrated through the guide hole on the connecting plate 661, when the ear wire welding assembly 67 welds the ear wire, the second pressing plate 668 is controlled by the lifting cylinder 662 to move down and press the mask body.

[0040] Please refer again Figure 6 The ear wire welding assembly 67 includes: a first connecting plate 671, a longitudinal cylinder 672 fixed on the first connecting plate 671, a second connecting plate 674 connected to the telescopic end of the longitudinal cylinder 672, and two ultrasonic welding joints 675 are also provided on the second connecting plate 674. Among them, a plurality of guide columns 673 are also provided between the second connecting plate 674 and the first connecting plate 671, and the lower end of the guide column 673 is connected to the second connecting plate 674, and the upper end is passed through the first connecting plate 671. During welding, the two ultrasonic welding joints 675 respectively weld the two ends of the ear wire.

[0041] Please refer again Figures 1 to 6 The following is a brief description of the working process of the mask ear wire feeding and welding mechanism:

[0042] First, the ear wire feeding assembly 64 pulls the ear wire out from the ear wire coil, and one end is clamped and fixed to the ear wire end fixing device 6480. The first cylinder 645 drives the clamping jaw 6430 to move forward and approach the ear wire end fixing device 6480, and the clamping cylinder 643 drives the chuck 644 to close to clamp the end of the ear wire. Then the first cylinder 645 retracts to drive the clamping jaw 6430 away from the ear wire end fixing device 6480, and the ear wire is pulled out and straightened simultaneously.

[0043] Secondly, the rotating clamping components 655 and 656 of the ear wire transfer component 65 are simultaneously controlled by the rack 6553 to rotate with the connecting shaft 6551 so that the clamp 6555 faces outward, and is driven by the telescopic cylinder 652 to descend to the cut ear wire to clamp it, and the ear wire shearing device 6460 cuts the ear wire.

[0044] Then, the clip 6555 is controlled by the rack 6553 to rotate again, so that the clip rotates 90 degrees and is distributed outward in a straight line, and is driven by the telescopic cylinder 652 to drop onto the mask body. At the same time, the conveyor assembly 62 delivers the masks of the previous station to the station below the ear wire welding assembly 67 one by one.

[0045] Finally, the second pressing plate 668 and the ultrasonic welding head 675 are synchronously driven to descend to the ear wire end portion to weld the ear wire to the mask body. The conveyor assembly 62 moves forward a station of the length of the chain plate to weld the ear wire to the next mask body in the above order.

[0046] The above-mentioned mask ear wire feeding and welding process is controlled and executed in an orderly manner by the controller and electrical mechanism arranged in the cabinet 61, and finally realizes the automatic feeding and welding process of the ear wire.

[0047] Compared with the prior art, a mask ear wire feeding and welding mechanism in this embodiment realizes the automated process of ear wire feeding and welding in mask production through a conveyor belt assembly, an ear wire feeding assembly, an ear wire transfer assembly and an ear wire welding assembly, thereby improving production efficiency and quality.

[0048] The above examples are only used to further illustrate the technical content of the present invention, so that readers can understand it more easily, but they do not mean that the implementation of the present invention is limited to this. Any technical extension or re-creation made according to the present invention is protected by the present invention. The protection scope of the present invention shall be subject to the claims.

Claims

1. A mask ear wire feeding and welding mechanism, characterized in that: include: A cabinet, a conveyor belt assembly arranged on the cabinet, a bracket spanning the cabinet, and two ear wire transfer assemblies and two ear wire welding assemblies connected to the bracket and arranged opposite to each other; wherein, the cabinet is also provided with two ear wire feeding assemblies located on both sides of the conveyor belt assembly, wherein one ear wire feeding assembly, the ear wire transfer assembly and the ear wire welding assembly constitute a welding mechanism on one side of the mask, and the other ear wire feeding assembly, the ear wire transfer assembly and the ear wire welding assembly constitute a welding mechanism on the other side of the mask, the ear wire feeding assembly pulls out and straightens the external ear wire material, the ear wire transfer assembly is used to clamp and transfer the ear wire straightened by the ear wire feeding assembly to the connection on the surface of the mask body, the ear wire welding assembly is used to weld the ear wire transferred by the ear wire transfer assembly to the mask body, the conveyor belt assembly is used to send the mask body of the previous station one by one to the bottom of the ear wire welding assembly for welding with the ear wire, and the conveyor belt assembly includes: a plurality of A chain belt composed of chain plates hinged at both ends, a chain connected to the back of the chain belt, a gear meshed with the chain, and a driving motor driving the gear to rotate; the chain plate is provided with a receiving groove that can accommodate the mask body, so that the mask body can be sent one by one to the bottom of the ear wire welding assembly for welding under the drive of the driving motor, and the ear wire feeding assembly includes: a guide rail connected to the cabinet, a slider that can slide along the guide rail, a first cylinder connected to the slider, a clamping claw is provided on the first cylinder, and an ear wire cutting device and an ear wire end fixing device are provided on the guide rail; wherein the first cylinder is used to drive the clamping claw to move forward along the guide rail direction to the ear wire end fixing device to clamp the ear wire end, and reset to stretch and straighten the ear wire, the ear wire cutting device is used to cut the stretched and straightened ear wire according to a preset length, and the ear wire end fixing device is used to clamp and fix the ear wire end before the ear wire cutting device cuts the straightened and stretched ear wire.

2. The mask ear wire feeding and welding mechanism according to claim 1, characterized in that: The clamping jaws include: a clamping cylinder and a jaw head which is controlled by the clamping cylinder to be opened or closed.

3. The mask ear wire feeding and welding mechanism according to claim 2, characterized in that: The ear wire cutting device includes: a shearing cylinder connected to a guide rail, and scissors whose opening and closing are controlled by the shearing cylinder, one of the handles of the scissors is connected to the telescopic end of the shearing cylinder, and the other handle is connected to the guide rail, the ear wire extending from the ear wire end fixing device passes through the blades of the scissors in the open state, and the shearing cylinder drives the handles of the scissors so that the scissors close and cut the ear wire.

4. The mask ear wire feeding and welding mechanism according to claim 3, characterized in that: The ear wire end fixing device includes: a clamping plate cylinder connected to the guide rail, an upper clamping plate controlled by the clamping plate cylinder, and a lower clamping plate corresponding to the upper clamping plate. One end of the external ear wire material is clamped and fixed between the upper clamping plate and the lower clamping plate. The clamping plate cylinder controls the movement of the upper clamping plate so that the upper clamping plate and the lower clamping plate open and close.

5. The mask ear wire feeding and welding mechanism according to claim 1, characterized in that: The ear wire transfer assembly includes: a support plate connected to the bracket, a telescopic cylinder fixed on the support plate, a fixed frame controlled by the telescopic end of the telescopic cylinder, and two rotating clamping assemblies are arranged in the fixed frame. The rotating clamping assemblies are used to perform a rotation action to clamp the ear wires on the ear wire feeding assembly and transfer them to the ear wire welding assembly for welding with the mask body.

6. The mask ear wire feeding and welding mechanism according to claim 5, characterized in that: The rotating clamping assembly includes: a connecting shaft arranged on a fixed frame, the upper end of the connecting shaft is a controlled end, the upper end is provided with a gear and a rack meshing with the gear, the lower end is connected to an opening and closing cylinder, the opening and closing cylinder drives a clamp, the upper end of the connecting shaft is controlled to rotate, synchronously drives the opening and closing cylinder to rotate, and the opening and closing cylinder drives the clamp to open and close to realize the ear wire clamping and placement action.

7. The mask ear wire feeding and welding mechanism according to claim 1, characterized in that: The bracket is also provided with a central flattening assembly, which includes: a connecting plate, a connecting column arranged on the top surface of the connecting plate, the connecting column is connected to the bracket, a lifting cylinder fixed on the connecting plate, a first pressing plate connected to the telescopic end of the lifting cylinder, a second pressing plate connected to the first pressing plate through a plurality of connecting columns, and a spring is also sleeved on the connecting column; wherein, a plurality of guide rods are also provided between the first pressing plate and the connecting plate, the lower end of the guide rod is connected to the first pressing plate, and the upper end is passed through a guide hole on the connecting plate, and when the ear wire welding assembly welds the ear wire, the second pressing plate is controlled by the lifting cylinder to move downward to press the mask body.

8. The mask ear wire feeding and welding mechanism according to claim 1, characterized in that: The ear wire welding assembly includes: a first connecting plate, a longitudinal cylinder fixed on the first connecting plate, a second connecting plate connected to the telescopic end of the longitudinal cylinder, and two ultrasonic welding joints are also provided on the second connecting plate; wherein, a plurality of guide columns are also provided between the second connecting plate and the first connecting plate, and the lower end of the guide column is connected to the second connecting plate, and the upper end is passed through the first connecting plate.

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