A follow-up type flat mask machine

Abstract

The present invention discloses a follow-up type flat mask machine, comprising: a feeding device for providing nose bridge strips and multiple layers of fabrics; a fabric pre-folding device for pressing a plurality of creases on the multiple layers of fabrics; a fabric layering device for processing the plurality of creases on the multiple layers of fabrics into pleats; a nose bridge embedding and knurling device for embedding the nose bridge strips into the multiple layers of fabrics and cutting them off, and welding and embossing the multiple layers of fabrics to form a continuous uncut pre-processed mask body; a follow-up earloop welding device that moves synchronously with the pre-processed mask body for welding earloops on the pre-processed mask body; a fabric slicing device for cutting the pre-processed mask body with earloops into finished masks; and a discharging device for outputting the finished masks. Only electricity is used for power, without using compressed air, which facilitates mask manufacturers to quickly put into production, and is not affected by the pressure fluctuation of compressed air during production. While significantly improving the production speed, it can also effectively reduce the defective rate.

Description

Technical Field

[0001] The present invention relates to the technical field of mask machines, and in particular to a follow-up type flat mask machine. Background Art

[0002] A mask is a hygiene product, which refers to a device worn over the mouth and nose to filter the air entering the mouth and nose, so as to block harmful gases, odors, and droplets from entering and leaving the mouth and nose of the wearer. The mask has a certain filtering effect on the air entering the lungs. When respiratory infectious diseases are prevalent or when working in an environment polluted by dust, etc., wearing a mask has a very good effect.

[0003] Traditional flat mask machines are generally divided into flat sheet-making machines and ear-loop machines. During the production process, first, the fabric is shaped, printed, and welded in the flat sheet-making machine, and then cut into pieces of mask bodies by a rotary cutter. Then, the mask bodies are sent to the ear-loop machine through a conveyor belt for welding the ear loops. Due to structural reasons, the ear-loop machine needs to be placed perpendicular to the sheet-making machine. Therefore, traditional flat mask machines have the disadvantages of large actual floor area, inaccurate welding of ear loops caused by position deviation when the cut mask bodies are transported to the ear-loop machine, and low overall production speed. Summary of the Invention

[0004] Aiming at the deficiencies of the above-mentioned prior art, the present invention provides a follow-up type flat mask machine, which can significantly improve the production speed and effectively reduce the defective rate at the same time.

[0005] To achieve the above object, the present invention provides a follow-up type flat mask machine, including a machine body and the following components provided on the machine body:

[0006] A feeding device for providing nose bridge strips and multiple layers of fabric;

[0007] A fabric pre-folding device located behind the feeding device for pressing multiple creases on the multiple layers of fabric;

[0008] A fabric layering device located behind the fabric pre-folding device for further processing the multiple creases on the multiple layers of fabric into pleats;

[0009] A nose bridge embedding and knurling device located behind the fabric layering device for embedding the nose bridge strip into the multiple layers of fabric and cutting it off, and welding and embossing the multiple layers of fabric with the embedded nose bridge strip to form a continuous uncut pre-processed mask body;

[0010] A follow-up ear-loop welding device located behind the nose bridge embedding and knurling device, moving synchronously with the pre-processed mask body, for welding ear loops on the pre-processed mask body;

[0011] A fabric slicing device located behind the follow-up ear-loop welding device for cutting the pre-processed mask body with ear loops into mask finished products;

[0012] The discharging device, located behind the fabric slicing device, is used to output the finished masks.

[0013] In one embodiment, the feeding device includes the following provided on the machine body:

[0014] The nose bridge strip rack, on which a first unwinding mechanism capable of placing the nose bridge strip cylinder is provided;

[0015] The fabric rack, on which at least three second unwinding mechanisms capable of placing fabric barrels are provided;

[0016] The fabric stacking rack, on which a number of parallel and spaced-apart layering rods are provided for stacking the fabrics on multiple second unwinding mechanisms together to form multiple layers of fabrics.

[0017] In one embodiment, the fabric pre-folding device includes:

[0018] The fabric folding rack, provided on the machine body;

[0019] Two folding drums, which are arranged in parallel in the up-down direction on the fabric folding rack, and there is a first interval between the two folding drums through which multiple layers of fabrics can pass for passing through multiple layers of fabrics;

[0020] On the side wall of the folding drum, a number of circumferential cutting grooves are provided at intervals along the axis. The circumferential cutting groove is surrounded by a vertical surface and an inclined surface. The vertical surface is perpendicular to the axis of the folding drum, and there is an included angle between the inclined surface and the axis of the folding drum;

[0021] The inclined surfaces of the circumferential cutting grooves on the same folding drum face the same direction, and the inclined surface of any circumferential cutting groove on one folding drum faces the opposite direction to the inclined surface of any circumferential cutting groove on the other folding drum, so that multiple layers of fabrics form multiple pleats when passing through the first interval.

[0022] In one embodiment, the fabric layering device includes:

[0023] The fabric layering rack, provided on the machine body;

[0024] Two layering components, which are arranged oppositely on the fabric layering rack. The layering component includes a number of layering plates stacked at intervals in the up-down direction, and the number of layering plates corresponds one-to-one to the number of pleats;

[0025] When a multi-layer fabric with multiple creases passes through the lamination component, the lamination plates on one lamination component are embedded into the corresponding creases on one side of the multi-layer fabric, and the lamination plates on the other lamination component are embedded into the corresponding creases on the other side of the multi-layer fabric, so as to further process the multiple creases on the multi-layer fabric into pleats.

[0026] In one embodiment, the nose bridge embedding and knurling device includes those provided on the frame:

[0027] A fabric width limiting component, located behind the fabric lamination device, for folding the multi-layer fabric to the rated width;

[0028] A nose bridge embedding and cutting component, located behind the fabric width limiting component, for embedding the nose bridge strip into the folding sandwich layer of the multi-layer fabric and cutting it;

[0029] A knurling wheel, located behind the nose bridge embedding and cutting component, for welding and embossing the multi-layer fabric embedded with the nose bridge strip to form a continuous uncut pre-processed mask body;

[0030] A material passing pressure wheel, located behind the knurling wheel, for compacting and outputting the pre-processed mask body.

[0031] In one embodiment, the ear loop following and welding device includes:

[0032] An ear loop holder, provided on the frame and located behind the nose bridge embedding and knurling device;

[0033] A following mechanism, provided on the ear loop holder, so that the ear loop holder periodically follows the pre-processed mask body to make a reciprocating motion;

[0034] An ear loop conveying mechanism, provided on the ear loop holder and connected to an external ear loop source, for inputting the ear loops into the ear loop following and welding device;

[0035] An ear loop cutting mechanism, provided on the ear loop holder, for intercepting a part of the ear loops to be welded;

[0036] An ear loop welding mechanism, provided on the ear loop holder, for welding the intercepted ear loops on the pre-processed mask body;

[0037] An ear loop flipping mechanism, provided on the ear loop holder, for adjusting the orientation of the ear loops on the pre-processed mask body to facilitate subsequent slicing work.

[0038] In one embodiment, the fabric slicing device includes:

[0039] A fabric slicing frame, provided on the machine body;

[0040] A front pressure roller, located behind the ear loop following and welding device, for adjusting the tightness of the pre-processed mask body;

[0041] The slicing roller, located behind the front pressing roller, is used to cut the pre-processed mask body with earlines into finished masks.

[0042] The rear pressing roller, located behind the slicing roller, is used to output the finished masks tightly.

[0043] In one embodiment, the discharging device includes a discharging conveyor belt provided behind the fabric slicing device and a limiting roller provided on the discharging conveyor belt for conveying the finished masks to a set position.

[0044] In one embodiment, the feeding device, the fabric pre-folding device, the fabric layering device, the nose bridge embossing device, the earline following welding device, the fabric slicing device, and the discharging device are arranged in a linear structure in sequence.

[0045] In one embodiment, the machine body includes a first body and a second body arranged at intervals. The feeding device, the fabric pre-folding device, the fabric layering device, and the nose bridge embossing device are provided on the first body, and the earline following welding device, the fabric slicing device, and the discharging device are provided on the second body to prevent the vibration of the earline following welding device from being transmitted to the feeding device, the fabric pre-folding device, the fabric layering device, and the nose bridge embossing device, causing unstable fabric.

[0046] A following type flat mask machine provided by the present invention only uses electricity in terms of power and does not use compressed air, which is convenient for mask manufacturers to quickly put into production and is not affected by the pressure fluctuation of compressed air during production. In terms of site layout, the following type flat mask machine is in a linear shape, which is convenient for manufacturers to place the equipment, enabling more equipment to be placed in a factory building of the same area. While significantly improving the production speed, it can also effectively reduce the defective rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without creative efforts.

[0048] Figure 1 It is an axonometric structure diagram of the following type flat mask machine in the embodiment of the present invention;

[0049] Figure 2 It is a front view structure diagram of the following type flat mask machine in the embodiment of the present invention;

[0050] Figure 3 It is a schematic structural diagram of the fabric pre-folding device in the embodiment of the present invention;

[0051] Figure 4 This is a schematic structural diagram of the fabric layering device in an embodiment of the present invention;

[0052] Figure 5 This is a schematic structural diagram of the ear wire following device in an embodiment of the present invention;

[0053] Figure 6 This is a schematic structural diagram of the fabric slicing device and the discharging device in an embodiment of the present invention.

[0054] Explanation of the reference numerals in the drawings: Feeding device 1, nose bridge strip rack 101, fabric rack 102, fabric stacking rack 103, first unwinding mechanism 104, second unwinding mechanism 105, layering rod 106, fabric sensor 107, fabric pre-folding device 2, fabric folding rack 201, folding drum 202, circumferential cutting groove 203, fabric layering device 3, fabric layering rack 301, layering assembly 302, layering plate 303, connecting screw 304, rotating wheel 305, nose bridge embedding knurling device 4, first tensioning wheel 501, second tensioning wheel 502, first tensioning wheel rack 503, second tensioning wheel rack 504, ear wire following device 6, ear wire feeding motor 601, ear wire power up and down servo 602, ear wire roller 603, shifting servo motor 604, mask ear wire turning device 605, ear wire opening / closing device 606, servo motor rotating and folding ear wire device 607, ear wire scissor system 608, horizontal moving table board 609, horizontal moving chain 6010, ear wire passing roller 6011, ear wire welding guiding rod 6012, ear wire turning sheet metal device 6013, fabric slicing device 7, fabric slicing rack 701, front pressing roller 702, slicing roller 703, rear pressing roller 704, discharging device 8, discharging conveyor belt 801, limiting roller 802, first body 901, second body 902.

[0055] The realization, functional features and advantages of the objectives of the present invention will be further described in conjunction with the embodiments and with reference to the accompanying drawings. Detailed implementation manners

[0056] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0057] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the attached drawings). If the specific posture changes, the directional indications will also change accordingly.

[0058] In addition, in the present invention, descriptions such as "first" and "second" are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0059] In the present invention, unless otherwise clearly defined and limited, terms such as "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection, a physical connection, or a wireless communication connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal connection of two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0060] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0061] Such as Figure 1-6Shown is a follow-up flat mask machine disclosed in this embodiment, which includes a machine body and a feeding device 1, a fabric pre-folding device 2, a fabric layering device 3, a nose bridge embedding and knurling device 4, a follow-up earloop welding device 6, a fabric slicing device 7 and a discharging device 8 arranged on the machine body. Among them: The feeding device 1 is used to provide nose bridge strips and multiple layers of fabric; the fabric pre-folding device 2 is located behind the feeding device 1 and is used to press multiple creases on the multiple layers of fabric; the fabric layering device 3 is located behind the fabric pre-folding device 2 and is used to further process the multiple creases on the multiple layers of fabric into pleats; the nose bridge embedding and knurling device 4 is located behind the fabric layering device 3 and is used to embed the nose bridge strip into the multiple layers of fabric, cut it off, and weld and emboss the multiple layers of fabric with the nose bridge strip embedded to form a continuous uncut pre-processed mask body; the follow-up earloop welding device 6 is located behind the nose bridge embedding and knurling device 4 and moves synchronously with the pre-processed mask body, and is used to weld earloops on the pre-processed mask body; the fabric slicing device 7 is located behind the follow-up earloop welding device 6 and is used to cut the pre-processed mask body with earloops into finished masks; the discharging device 8 is located behind the fabric slicing device 7 and is used to output the finished masks.

[0062] In this embodiment, the feeding device 1, the fabric pre-folding device 2, the fabric layering device 3, the nose bridge embedding and knurling device 4, the follow-up earloop welding device 6, the fabric slicing device 7 and the discharging device 8 are arranged in a linear structure in sequence, so as to facilitate the manufacturer to place the equipment, and enable more equipment to be placed in a factory building of the same area. Functionally, the follow-up flat mask machine can be divided into a feeding device 1, a mask body forming system, a follow-up earloop welding device 6, a slicing and discharging system. Among them, the fabric pre-folding device 2, the fabric layering device 3 and the nose bridge embedding and knurling device 4 jointly form the mask body forming system, and the fabric slicing device 7 and the discharging device 8 form the slicing and discharging system. Its working process is as follows: The feeding device 1 and the mask body forming system first pre-process three or four layers of fabric into a mask body. After the nose bridge strip is embedded and welded and printed on the pre-processed mask body, it is not sliced into individual mask bodies, but the uncut pre-processed mask body as a whole is first conveyed to the follow-up earloop welding device 6 at a certain speed. The follow-up earloop welding device 6 welds the earloops in a follow-up manner at the same speed as the pre-processed mask body. After the earloops are welded, the pre-processed mask body enters the fabric slicing device 7 and is processed into finished masks, and finally is output through the discharging device 8.

[0063] In this embodiment, the machine body includes a first body 901 and a second body 902 which are arranged at intervals. The feeding device 1, the fabric pre-folding device 2, the fabric layering device 3, and the nose bridge embedding knurling device 4 are arranged on the first body 901, and the follow-up welding ear wire device 6, the fabric slicing device 7, and the discharging device 8 are arranged on the second body 902 to prevent the vibration of the follow-up welding ear wire device 6 from being transmitted to the feeding device 1, the fabric pre-folding device 2, the fabric layering device 3, and the nose bridge embedding knurling device 4, which may cause the fabric to be unstable. Further preferably, the bottoms of the first body 901 and the second body 902 are both provided with foot pads and pulleys to facilitate the replacement of the installation position of the follow-up flat mask machine.

[0064] The following will elaborate on each device of the follow-up flat mask machine in this embodiment.

[0065] In this embodiment, the feeding device 1 includes a nose bridge strip rack 101, a fabric rack 102, and a fabric stacking rack 103 arranged on the machine body. Among them, the nose bridge strip rack 101 is provided with a first feeding mechanism 104 capable of placing a nose bridge strip cylinder; the fabric rack 102 is provided with at least three second feeding mechanisms 105 capable of placing fabric barrels. In this embodiment, the illustrated second feeding mechanisms 105 are three; the fabric stacking rack 103 is provided with a number of parallel and spaced-apart layering rods 106 for stacking the fabrics on multiple second feeding mechanisms 105 together to form multiple layers of fabric. That is, multiple layers of fabric are formed by passing through the fabric stacking rack 103 layer by layer from top to bottom. For example: in this embodiment, the number of layering rods 106 is four. The first layer of fabric passes under the first layering rod 106 (the first one is counted from the side of the nose bridge strip rack 101), and then passes above the second, third, and fourth layering rods 106; the second layer of fabric passes above the first layering rod 106, then passes under the second layering rod 106, and then passes above the third and fourth layering rods 106; the third layer of fabric passes above the first and second layering rods 106, then passes under the third layering rod 106, and then passes above the fourth layering rod 106. Thus, the fabrics on different second feeding mechanisms 105 are stacked into multiple layers of fabric according to the design and output.

[0066] As a preferred implementation manner, the fabric rack 102 is further provided with fabric sensors 107 corresponding to the second feeding mechanisms 105 one by one. The fabric on the second feeding mechanism 105 enters the fabric stacking rack 103 after passing through the corresponding fabric sensor 107. By the fabric sensor 107, it can sense whether the fabric enters the fabric stacking rack 103 normally, thereby avoiding material leakage. Among them, the circuit structure and working principle of the fabric sensor 107 are both conventional technical means, so they will not be elaborated in this embodiment.

[0067] In this embodiment, the fabric pre-folding device 2 includes a fabric folding frame 201 provided on the machine body, and a folding drum 202 rotatably connected to the fabric folding frame 201. Among them, the number of folding drums 202 is two, and the two folding drums 202 are arranged in parallel in the up-and-down direction on the fabric folding frame 201. There is a first interval between the two folding drums 202 that can pass through multiple layers of fabric for passing through multiple layers of fabric. Specifically, a number of circumferential cutting grooves 203 are arranged at intervals along the axis on the side wall of the folding drum 202. The circumferential cutting grooves 203 are formed by a vertical surface and an inclined surface. The vertical surface is perpendicular to the axis of the folding drum 202, and there is an included angle between the inclined surface and the axis of the folding drum 202. The circumferential cutting grooves 203 in this embodiment are formed by a number of frustum of cones arranged in sequence, that is, there is a circumferential cutting groove 203 between two adjacent frustum of cones. When the two folding drums 202 are installed on the fabric folding frame 201, the inclined surfaces of the circumferential cutting grooves 203 on the same folding drum 202 face the same direction, and the inclined surface of any circumferential cutting groove 203 on one folding drum 202 faces the opposite direction to the inclined surface of any circumferential cutting groove 203 on the other folding drum 202, so that multiple pleats are formed when multiple layers of fabric pass through the first interval.

[0068] As a preferred implementation method, the fabric folding frame 201 has a lateral movement stroke on the machine body. By adjusting the position of the fabric folding frame 201, the indentation position of the folding drum 202 can be adjusted. Among them, the lateral direction refers to the direction perpendicular to the movement direction of multiple layers of fabric. The specific lateral movement of the fabric folding frame 201 can be realized by a slider and a chute. This implementation process is a conventional technical means, so it will not be elaborated in this embodiment.

[0069] The fabric layer separation device 3 includes a fabric layer separation frame 301 provided on the machine body, and a layer separation component 302 provided on the fabric layer separation frame 301. Among them, the number of layer separation components 302 is two, and the two layer separation components 302 are arranged oppositely on the fabric layer separation frame 301. The layer separation component 302 includes a number of layer separation plates 303 stacked at intervals in the up-and-down direction. The number of layer separation plates 303 corresponds one-to-one to the number of pleats. When multiple layers of fabric with multiple pleats pass through the layer separation component 302, the layer separation plates 303 on one layer separation component 302 are embedded into the corresponding pleats on one side of the multiple layers of fabric, and the layer separation plates 303 on the other layer separation component 302 are embedded into the corresponding pleats on the other side of the multiple layers of fabric, so as to further process the multiple pleats on the multiple layers of fabric into pleats. The purpose of the pleats is to have a certain expansion space when using a flat mask, which is convenient for breathing through the mouth and nose.

[0070] As a preferred embodiment, the layered component 302 is connected to the fabric layering rack 301 through a connecting screw 304. One end of the connecting screw 304 is located above the fabric layering rack 301, and the other end passes through the fabric layering rack 301 and is connected to the layered component 302. Among them, the connecting screw 304 is threadedly connected to the fabric layering rack 301, and a rotating wheel 305 is provided at the end of the connecting screw 304 located above the fabric layering rack 301, so that the staff can adjust the height of the layered component through the rotating wheel 305, making the layered plate 303 in the layered component 302 correspond to the corresponding creases.

[0071] The nose bridge embedding and knurling device 4 includes a fabric width limiting component, a nose bridge embedding and cutting component, a knurling wheel and a material passing pressure wheel provided on the machine frame. The fabric width limiting component is located behind the fabric layering device 3 and is used to fold multiple layers of fabric to a rated width; the nose bridge embedding and cutting component is located behind the fabric width limiting component and is used to embed the nose bridge strip into the folded sandwich of multiple layers of fabric and cut it; the knurling wheel is located behind the nose bridge embedding and cutting component and is used to weld and emboss the multiple layers of fabric with the embedded nose bridge strip through ultrasonic waves to form a continuous uncut prefabricated mask body; the material passing pressure wheel is located behind the knurling wheel and is used to compact and output the prefabricated mask body. Among them, the specific implementation structures of the fabric width limiting component, the nose bridge embedding and cutting component, the knurling wheel and the material passing pressure wheel are conventional technical means in the field, so they will not be elaborated in this embodiment. Further preferably, a first tensioning wheel 501 and a second tensioning wheel 502 capable of controlling the tension of the fabric are further provided between the nose bridge embedding and knurling device 4 and the fabric layering device 3. The first tensioning wheel 501 is located behind the fabric layering device 3, and the second tensioning wheel 502 is located behind the second tensioning wheel 502. The first tensioning wheel 501 and the second tensioning wheel 502 are respectively rotatably connected to the machine body through a first tensioning wheel frame 503 and a second tensioning wheel frame 504. Among them, the axles of the first tensioning wheel 501 and the second tensioning wheel 502 are perpendicular to the moving direction of the fabric, and the first tensioning wheel 501 has a vertical moving stroke on the first tensioning wheel frame 503, and the second tensioning wheel 502 has a vertical moving stroke on the second tensioning wheel frame 504. The tension of the fabric can be adjusted by adjusting the vertical positions of the first tensioning wheel 501 and the second tensioning wheel 502.

[0072] In this embodiment, the ear wire following device 6 is functionally divided into an ear wire rack, a following mechanism, an ear wire conveying mechanism, an ear wire cutting mechanism, an ear wire welding mechanism, and an ear wire flipping mechanism. The ear wire rack is installed on the machine body, and the ear wire rack is installed on the frame and located behind the nose bridge embedding knurling device 4; the following mechanism is installed on the ear wire rack to enable the ear wire rack to periodically follow the pre-processed mask body to move back and forth; the ear wire conveying mechanism is installed on the ear wire rack and is connected to an external ear wire source for inputting ear wires into the ear wire following device 6; the ear wire cutting mechanism is installed on the ear wire rack for intercepting part of the ear wires to be welded; the ear wire welding mechanism is installed on the ear wire rack for welding the intercepted ear wires on the pre-processed mask body; the ear wire flipping mechanism is installed on the ear wire rack for adjusting the orientation of the ear wires on the pre-processed mask body to facilitate subsequent slicing work.

[0073] As a preferred embodiment, the following components are specifically included in the ear wire following and welding device 6 in this embodiment during implementation: an ear wire feeding motor 601, an upper and lower servo for ear wire welding power 602, ear wire rollers 603, a displacement servo motor 604, a mask ear wire turning device 605, an ear wire opening / closing clamping device 606, a servo motor rotating and folding ear wire device 607, an ear wire cutting system 608, a horizontal moving platen 609, a horizontal moving chain 6010, ear wire passing rollers 6011, a welding ear guide rod 6012, an ear wire turning sheet metal device 6013, etc. Among them, the upper and lower servo for ear wire welding power 602, the displacement servo motor 604, the servo motor rotating and folding ear wire device 607, the horizontal moving platen 609, and the horizontal moving chain 6010 implement the functions of the following mechanism. The ear wire feeding motor 601, the ear wire rollers 603, the ear wire passing rollers 6011, and the welding ear guide rod 6012 implement the functions of the ear wire conveying mechanism. The ear wire cutting system 608 implements the function of the ear wire cutting mechanism, the ear wire opening / closing clamping device implements the function of the ear wire welding mechanism, and the mask ear wire turning device 605 and the ear wire turning sheet metal device 6013 implement the functions of the ear wire turning mechanism. The number of the illustrated ear wire following and welding devices 6 in this embodiment is two. During the conveying process of the fabric, through the displacement servo motor 604, the horizontal moving platen 609 is moved to make the two sets of ear wire following and welding devices 6 follow the fabric and move at the same speed. During the movement, four ear wires are first welded, and these four ear wires are distributed on four prefabricated mask bodies. Then, after the horizontal moving platen 609 moves a mask length relative to the prefabricated mask body in the incoming material direction and then maintains the same movement speed as the prefabricated mask body, another four ear wires are welded. The ear wire turning device turns the two ear wires closer to the discharge port among the later welded ear wires for subsequent slicing. One movement cycle of the two sets of ear wire following and welding devices 6 needs to weld four masks. The upper and lower servo for ear wire welding power 602 needs to move up and down for two cycles, and four ear wires are welded in each cycle. During the welding process, the ear wire conveying device, the ear wire preparation for cutting device, and the ear wire cutting device prepare the ear wires according to the set program respectively to ensure that the ear wire lengths meet the standards during ultrasonic welding.

[0074] The fabric slicing device 7 includes a fabric slicing rack 701 provided on the machine body, and a front pressing roller 702, a slicing roller 703 and a rear pressing roller 704 provided on the fabric slicing rack 701. The front pressing roller 702 is located behind the ear wire following device 6 and is used to adjust the tightness of the pre-processed mask body; the slicing roller 703 is located behind the front pressing roller 702 and is used to cut the pre-processed mask body with ear wires into finished masks; the rear pressing roller 704 is located behind the slicing roller 703 and is used to output the finished masks tightly. In this embodiment, the front pressing roller 702 and the rear pressing roller 704 have an up-and-down movement stroke, and the movement of the front pressing roller 702 and the rear pressing roller 704 can change the gaps between the front pressing roller 702 and the slicing roller 703, and between the rear pressing roller 704 and the slicing roller 703, so as to control the tension of the fabric. The slicing roller 703 can also adjust its rotation position and up-and-down position. After adjusting the rotation position, it is ensured that the slicing position is appropriate, and the continuous pre-processed mask body with welded ear wires is cut into finished masks. Among them, how to realize the adjustment of the front pressing roller 702, the slicing roller 703 and the rear pressing roller 704 is a conventional technical means in the art, so it will not be described in detail in this embodiment.

[0075] The discharging device 8 includes a discharging conveyor belt 801 provided behind the fabric slicing device 7, and a limiting roller 802 provided on the discharging conveyor belt 801 for conveying the finished masks to a set position.

[0076] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made by using the content of the specification and drawings of the present invention under the inventive concept of the present invention, or direct / indirect application in other related technical fields is included in the patent protection scope of the present invention.

Claims

1. A follow-up type flat mask machine, characterized in that, Comprising a machine body and the following components provided on the machine body: A feeding device for providing nose bridge strips and multi-layer fabrics; A fabric pre-folding device located behind the feeding device for pressing multiple creases on the multi-layer fabric; A fabric layering device located behind the fabric pre-folding device for further processing the multiple creases on the multi-layer fabric into pleats; A nose bridge embedding and knurling device located behind the fabric layering device for embedding the nose bridge strip into the multi-layer fabric, cutting it off, and welding and knurling the multi-layer fabric with the embedded nose bridge strip to form a continuous uncut pre-processed mask body; A following earloop welding device located behind the nose bridge embedding and knurling device, moving synchronously with the pre-processed mask body, for welding earloops on the pre-processed mask body; A fabric slicing device located behind the following earloop welding device for slicing the pre-processed mask body with earloops into finished masks; A discharging device located behind the fabric slicing device for outputting the finished masks; The following earloop welding device includes: An earloop welding frame provided on the machine frame and located behind the nose bridge embedding and knurling device; A following mechanism provided on the earloop welding frame to enable the earloop welding frame to periodically follow the pre-processed mask body for reciprocating motion; An earloop conveying mechanism provided on the earloop welding frame, connected to an external earloop source, for inputting earloops into the following earloop welding device; An earloop cutting mechanism provided on the earloop welding frame for intercepting a part of the earloops to be welded; An earloop welding mechanism provided on the earloop welding frame for welding the intercepted earloops on the pre-processed mask body; An earloop flipping mechanism provided on the earloop welding frame for adjusting the orientation of the earloops on the pre-processed mask body to facilitate subsequent slicing work; The following earloop welding device specifically includes an earloop feeding motor, an up and down servo for earloop welding power, earloop rollers, a displacement servo motor, a mask earloop turning device, an earloop opening / closing clamping device, a servo motor rotating and folding earloop device, an earloop scissors system, a horizontal moving platen, a horizontal moving chain, earloop thread passing rollers, welding ear guiding rods, and an earloop turning sheet metal device; The up and down servo for earloop welding power, the displacement servo motor, the servo motor rotating and folding earloop device, the horizontal moving platen, and the horizontal moving chain implement the function of the following mechanism; the earloop feeding motor, the earloop rollers, the earloop thread passing rollers, and the welding ear guiding rods implement the function of the earloop conveying mechanism; The earloop scissors system implements the function of the earloop cutting mechanism, the earloop opening / closing clamping device implements the function of the earloop welding mechanism, and the mask earloop turning device and the earloop turning sheet metal device implement the function of the earloop flipping mechanism; During the conveying process of the fabric, through the displacement servo motor, the horizontal moving platen is moved to make the two sets of following earloop welding devices follow the fabric at the same speed. During the movement, four earloops are first welded, and these four earloops are distributed on four pre-processed mask bodies. Then, after the horizontal moving platen moves a mask length in the incoming material direction relative to the pre-processed mask body and maintains the same movement speed as the pre-processed mask body, another four earloops are welded. The earloop turning device flips the two earloops closer to the discharging port among the later welded earloops for subsequent slicing.

2. The follow-up type flat mask machine according to claim 1, characterized in that, The feeding device includes the following components provided on the machine body: Nasal bridge strip material rack, on which there is a first material feeding mechanism capable of placing nasal bridge strip cartridges; Fabric rack, on which there are at least three second material feeding mechanisms capable of placing fabric barrels; Fabric stacking rack, on which there are several parallel and spaced-apart layering rods for stacking the fabrics on multiple second material feeding mechanisms together to form multiple layers of fabrics.

3. The follow-up type flat mask machine according to claim 1, characterized in that, The fabric pre-folding device includes: Fabric folding rack, arranged on the machine body; Two folding rotating cylinders, which are arranged parallel to each other in the up and down direction on the fabric folding rack. There is a first interval between the two folding rotating cylinders through which multiple layers of fabrics can pass for passing through multiple layers of fabrics; On the side wall of the folding rotating cylinder, several circumferential cutting grooves are arranged at intervals along the axis. The circumferential cutting groove is surrounded by a vertical surface and an inclined surface. The vertical surface is perpendicular to the axis of the folding rotating cylinder, and the inclined surface has an included angle with the axis of the folding rotating cylinder; The orientations of the inclined surfaces of the circumferential cutting grooves on the same folding rotating cylinder are the same, and the orientation of the inclined surface of any circumferential cutting groove on one folding rotating cylinder is opposite to the orientation of the inclined surface of any circumferential cutting groove on the other folding rotating cylinder, so that multiple pleats are formed when multiple layers of fabrics pass through the first interval.

4. The follow-up type flat mask machine according to claim 1, characterized in that, The fabric layering device includes: Fabric layering rack, arranged on the machine body; Two layering components, which are arranged oppositely on the fabric layering rack. The layering component includes several layering plates stacked at intervals in the up and down direction, and the number of layering plates corresponds one by one to the number of pleats; When multiple layers of fabrics with multiple pleats pass through the layering component, each layering plate on one layering component is embedded into the corresponding pleat on one side of the multiple layers of fabrics, and each layering plate on the other layering component is embedded into the corresponding pleat on the other side of the multiple layers of fabrics to further process the multiple pleats on the multiple layers of fabrics into pleats.

5. The follow-up type flat mask machine according to claim 1, characterized in that, The nasal bridge embedding and knurling device includes those arranged on the frame: Fabric width limiting component, located behind the fabric layering device, for folding multiple layers of fabrics to the rated width; Nasal bridge embedding and cutting component, located behind the fabric width limiting component, for embedding the nasal bridge strip into the folding sandwich of multiple layers of fabrics and cutting it; Knurling wheel, located behind the nasal bridge embedding and cutting component, for welding and knurling the multiple layers of fabrics with the nasal bridge strip embedded to form a continuous uncut pre-processed mask body; Material passing pressure wheel, located behind the knurling wheel, for compacting and outputting the pre-processed mask body.

6. The follow-up flat mask machine according to claim 1, wherein, The fabric slicing device includes: Fabric slicing rack, arranged on the machine body; Front pressing roller, located behind the earline following welding device, for adjusting the tightness of the pre-processed mask body; Slicing roller, located behind the front pressing roller, for cutting the pre-processed mask body with earlines into mask finished products; Rear pressing roller, located behind the slicing roller, for tightly outputting the mask finished products.

7. The follow-up flat mask machine according to claim 1, wherein, The discharging device includes a discharging conveyor belt arranged behind the fabric slicing device and a limiting roller arranged on the discharging conveyor belt for conveying the mask finished products to the set position.

8. The follow-up flat mask machine according to any one of claims 1 to 7, wherein, The feeding device, fabric pre-folding device, fabric layering device, nasal bridge embedding and knurling device, earline following welding device, fabric slicing device, and discharging device are arranged in a linear structure in sequence.

9. The follow-up flat mask machine according to any one of claims 1 to 7, wherein, The machine body includes a first body and a second body which are arranged at intervals. The feeding device, the cloth pre-folding device, the cloth layering device, and the nose bridge embedding knurling device are arranged on the first body, and the follow-up welding ear wire device, the cloth slicing device, and the discharging device are arranged on the second body, so as to prevent the vibration of the follow-up welding ear wire device from being transmitted to the feeding device, the cloth pre-folding device, the cloth layering device, and the nose bridge embedding knurling device, causing the cloth to be unstable.

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