Mask welding device and mask manufacturing apparatus

Abstract

The application discloses a mask welding device and a mask manufacturing equipment, wherein the mask welding device comprises a long-side welding mechanism and a short-side welding mechanism; the short-side welding mechanism comprises a feeding module, a feeding assembly, a first welding assembly and a cutting assembly; the feeding module comprises at least one limiting groove and at least one airflow channel communicated with the limiting groove. The long-side welding mechanism and the short-side welding mechanism weld the long side and the short side of a mask body respectively. The short-side welding mechanism realizes the conveying of an ear band through the feeding module. After the ear band is conveyed to a predetermined position, the first welding assembly is actuated to simultaneously weld the short side of the mask and the ear band. Meanwhile, the cutting assembly is driven to cut the short side of the mask body and the ear band, so that the welding process of the short side of the mask body, the welding process of the ear band, the cutting process of the short side of the mask body and the cutting process of the ear band are combined into one process, and the production efficiency is effectively improved. The application is used in the technical field of mask production and manufacturing.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mask production and manufacturing, in particular to a mask welding device and a mask manufacturing equipment. BACKGROUND

[0002] The mask structure comprises a mask body and ear bands. At present, the mask machine for producing masks in the prior art is usually arranged in a "one-to-two" structure, that is, the mask body is formed by an upstream mask body manufacturing device, and then two mask ear band welding devices are arranged downstream for welding the ear bands on both sides of the mask. A flanging conveying line is arranged between the mask body manufacturing device and the two mask ear band welding devices. The "one-to-two" mask machine has the following problems:

[0003] 1. Low ear band welding efficiency. The ear band welding device of the existing "one-to-two" mask machine needs to set up multiple mechanisms such as ear band conveying, winding, cutting, and welding to cooperate with each other to convey and position the ear band or ear rope and cut the ear band or ear rope into a predetermined appropriate length, and then weld and fix the ear band on the left and right sides of the mask body through ultrasonic welding process. A plurality of clamping hands are required to cooperate with each other to clamp the ear band, which has a complex structure and a high equipment failure rate, thus resulting in low welding efficiency of the mask ear band welding device and limiting the production efficiency of the mask to some extent. Due to the low welding efficiency of the mask ear band welding device, the production of the upstream mask body manufacturing device is relatively fast. In order to match the production speed, the "one-to-two" structure is used, that is, two mask ear band welding devices are used to distribute the mask bodies from the previous process.

[0004] 2. The mask body manufacturing device adopts ultrasonic welding to perform edge sealing of the side edges of the mask. The structure usually adopts a rolling method, that is, a fixed ultrasonic die is arranged below, and a rotating rolling roller is arranged above. With the conveying of the mask cloth, the roller cooperates with the ultrasonic die to perform edge sealing of the mask. The above-mentioned structure of the mask body edge sealing is prone to wear of the ultrasonic die below after long-term use, which causes the mask edge sealing to be not firm and the product quality to decrease. In addition, the size of the ultrasonic die and the roller corresponds to the size of the mask. One machine with one set of die can only produce one size of mask. If another size of mask is produced, another device needs to be used.

[0005] 3. The upstream mask body manufacturing device and the downstream mask ear loop welding device are two independent and separate devices. Since the direction in which the mask body is oriented when the mask body manufacturing device is working is different from the direction in which the mask body is oriented when the mask ear loop welding device is working, and the two are at 90° to each other, a flipping conveyor line needs to be set up between the mask body manufacturing device and the mask ear loop welding device to flip the mask body 90°. This results in a complex overall equipment structure, a long production line, and low production efficiency.

[0006] 4. The production process is complex. The production process of the "one-to-two" mask machine is as follows: sealing and welding the edge of the mask body fabric → cutting the fabric to form segmented mask bodies → conveying by the edge-flipping conveyor line → ear loop feeding and cutting → ear loop welding → mask output. Summary of the Invention

[0007] The purpose of this invention is to at least solve one of the technical problems existing in the prior art, and to provide a mask welding device and mask manufacturing equipment that can effectively improve production efficiency.

[0008] This invention also provides a mask welding device, comprising:

[0009] Long-side welding mechanism, used for welding the long side of the mask body;

[0010] A short-side welding mechanism, located downstream of the long-side welding mechanism, is used to weld the short side of the mask body and the mask ear loops, wherein the short-side welding mechanism includes:

[0011] A feeding module includes at least one limiting groove and at least one airflow channel communicating with the limiting groove. The limiting groove has an ear loop inlet and an ear loop outlet. The airflow channel is configured to allow airflow to enter so that the airflow can drive the ear loop to be conveyed along the limiting groove.

[0012] A feeding assembly for selectively locking the ear loop to limit ear loop delivery;

[0013] A first welding assembly is disposed at the ear loop inlet and ear loop outlet of the feeding module. The first welding assembly includes a first welding die head and a second welding die head that cooperate with each other.

[0014] A cutting component, which is disposed on the first welding die and / or the second welding die, is used to cut the mask body and the mask ear loops.

[0015] The mask manufacturing equipment has at least the following beneficial effects: the long side and the short side of the mask body are welded by the long side welding mechanism and the short side welding mechanism respectively, the ear band is conveyed by the feeding module and the feeding assembly, the airflow is introduced into the limiting groove through the airflow channel, the ear band is moved and conveyed in the limiting groove by the airflow, the first welding assembly is actuated to weld the short side of the mask and the ear band after the ear band is moved and conveyed to the predetermined position, and the cutting assembly is actuated to cut the short side of the mask body and the ear band at the same time, so that the welding process of the short side of the mask body, the welding process of the ear band, the cutting process of the short side of the mask body and the cutting process of the ear band are combined into one process, the working efficiency of the mask welding device is effectively improved, the production efficiency of the mask is improved, the overall structure is simple and compact, the complex structure design of the traditional mask machine is abandoned, and the failure rate is low.

[0016] According to the mask welding device, the end of the first welding die is provided with a convex blade, and the end of the second welding die is provided with a notch matched with the convex blade.

[0017] According to the mask welding device, the end of the first welding die is provided with an opening, a cutter is arranged in the first welding die and extends out of the opening, and the end of the second welding die is provided with a notch matched with the cutter.

[0018] According to the mask welding device, the feeding module comprises first and second feeding modules which are arranged at intervals and have a predetermined gap, the first feeding module comprises a first limiting groove with a first ear band inlet and a first ear band outlet, the second feeding module comprises a second limiting groove with a second ear band inlet and a second ear band outlet, the first ear band inlet is opposite to the second ear band outlet, the first ear band outlet is opposite to the second ear band inlet, and the first welding assembly is arranged at the predetermined gap.

[0019] According to the mask welding device, an inlet channel corresponding to the first limiting groove and / or the second limiting groove is arranged on the first feeding module and / or the second feeding module.

[0020] According to the mask welding device, the airflow channel is arranged adjacent to the inlet channel, the airflow channel intersects with the inlet channel and forms an acute angle at the intersection.

[0021] According to the mask welding device, the path of the limiting groove is semicircular.

[0022] According to the mask welding device, the limiting groove is a groove structure with an open bottom surface or an open side surface.

[0023] The mask welding device further comprises a stripping assembly for stripping the ear band from the limiting groove.

[0024] The mask welding device further comprises a stripping gas hole in communication with the limiting groove in the feeding module, the stripping gas hole being arranged to selectively pass air flow to strip the ear band from the limiting groove.

[0025] The feeding module of the mask welding device further comprises at least one stripping module selectively covering the side opening of the limiting groove.

[0026] The feeding module of the mask welding device further comprises two rollers in contact with each other, the two rollers pressing the ear band to selectively lock the ear band.

[0027] The long-side welding mechanism of the mask welding device comprises two second welding assemblies, the two second welding assemblies being arranged at intervals, and each second welding assembly comprising a third welding die and a fourth welding die.

[0028] The interval between the two second welding assemblies is adjustable.

[0029] The mask welding device is used in a mask manufacturing device.

[0030] The mask manufacturing device has at least the following beneficial effects: the mask body short-side welding process, the ear band welding process, the ear band body short-side cutting process and the ear band cutting process are combined into one process by the mask welding device, thereby effectively improving the production efficiency of the mask.

[0031] The mask manufacturing device further comprises a machine box and an air source filtering device, the mask welding device being arranged in the machine box, the machine box being arranged to have a positive pressure inside relative to the outside, and the air source filtering device being used to filter air entering the inside of the machine box.

[0032] The machine box of the mask manufacturing device is provided with a sterilization device. BRIEF DESCRIPTION OF DRAWINGS

[0033] The present application will be further described below in conjunction with the drawings and examples;

[0034] Figure 1 The structure of the mask welding device is shown in the drawings;

[0035] Figure 2Partial structure schematic view of short side welding mechanism in mask welding device embodiment of the present application;

[0036] Figure 3 Partial structure sectional schematic view of short side welding mechanism in mask welding device embodiment of the present application;

[0037] Figure 4 Partial structure sectional schematic view of first implementation of feeding module in mask welding device embodiment of the present application;

[0038] Figure 5 Partial structure sectional schematic view of second implementation of feeding module in mask welding device embodiment of the present application;

[0039] Figure 6 Partial structure sectional schematic view of third implementation of feeding module in mask welding device embodiment of the present application;

[0040] Figure 7 Partial structure sectional schematic view of airflow channel coinciding with feeding channel in mask welding device embodiment of the present application;

[0041] Figure 8 Partial structure sectional schematic view of air inlet head in mask welding device embodiment of the present application;

[0042] Figure 9 Partial structure sectional schematic view of first welding assembly first implementation in mask welding device embodiment of the present application;

[0043] Figure 10 Partial structure sectional schematic view of first welding assembly second implementation in mask welding device embodiment of the present application;

[0044] Figure 11 Partial structure sectional schematic view of first implementation of ear band disengagement limiting groove in mask welding device embodiment of the present application;

[0045] Figure 12 Partial structure sectional schematic view of second implementation of ear band disengagement limiting groove in mask welding device embodiment of the present application;

[0046] Figure 13 Partial structure sectional schematic view of third implementation of ear band disengagement limiting groove in mask welding device embodiment of the present application;

[0047] Figure 14 Partial structure sectional schematic view of Figure 13 A-A line in the present application;

[0048] Figure 15 Partial structure sectional schematic view of Figure 13 A-A line ear band disengagement limiting groove process in the present application;

[0049] Figure 16 This is a partial structural diagram of the welding mechanism on the long side in an embodiment of the mask welding device of the present invention;

[0050] Figure 17 This is a partial cross-sectional schematic diagram of the avoidance structure of the long side welding mechanism in an embodiment of the mask welding device of the present invention;

[0051] Figure 18 This is a schematic diagram of the structure of an embodiment of the mask manufacturing equipment of the present invention;

[0052] Figure 19 This is a schematic diagram of the structure of the machine casing in an embodiment of the mask manufacturing equipment of the present invention;

[0053] Reference numerals: Ear loop 10, Mask body 20, Short side welding mechanism 30, Long side welding mechanism 40, Fabric conveying mechanism 50, Pleating forming mechanism 60, Nose bridge strip conveying mechanism 70, Chassis 80, Blower 81, Ultraviolet lamp 82, Feeding module 100, Limiting groove 150, Ear loop inlet 151, Ear loop outlet 152, First feeding module 110, Second feeding module 120, First limiting groove 111, Second limiting groove 121, First ear loop inlet 1111, First ear loop outlet 1112, Second ear loop inlet 1211, Second ear loop outlet 1212, Airflow channel 1 30. Hose 131. Air inlet head 132. Annular groove 1321. Air inlet hole 1322. Feeding channel 140. Feeding assembly 200. Roller 210. First welding assembly 300. First welding die 310. Second welding die 320. Protruding blade 311. Opening 312. Cutting tool 313. Notch 321. Second welding assembly 400. Third welding die 410. Fourth welding die 420. Clearance structure 411. Unloading assembly 500. Push rod assembly 510. Unloading air hole 520. First unloading module 112. Second unloading module 122. Frame 90. Long groove 91. Detailed Implementation

[0054] This section will describe in detail specific embodiments of the present invention. Preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but they should not be construed as limiting the scope of protection of the present invention.

[0055] Reference Figure 1The mask welding device provided by the embodiment of the present application comprises a long-side welding mechanism 40 and a short-side welding mechanism 30, wherein the long-side welding mechanism 40 is used for welding the long side of the mask body 20; the short-side welding mechanism 30 is arranged downstream of the long-side welding mechanism 40 and is used for welding the short side of the mask body 20 and the mask ear band 10. The cloth for producing the mask body 20 is continuously conveyed along a predetermined direction and is conveyed to the short-side welding mechanism 30 from the long-side welding mechanism 40.

[0056] Referring to Figure 2 In the embodiment, the short-side welding mechanism 30 comprises a feeding module 100, the feeding module 100 comprising at least one limiting groove 150 and at least one airflow channel 130 in communication with the limiting groove 150, the limiting groove 150 having an ear band inlet 151 and an ear band outlet 152, the two ends of the limiting groove 150 constituting the ear band inlet 151 and the ear band outlet 152 respectively, wherein the airflow channel 130 is arranged to introduce airflow so that the airflow can drive the ear band 10 to be conveyed along the limiting groove 150; a feeding assembly 200 used for selectively locking the ear band 10 to limit the conveying of the ear band 10; a first welding assembly 300 arranged at the ear band inlet 151 and the ear band outlet 152 of the feeding module 100, the first welding assembly 300 comprising a first welding die 310 and a second welding die 320 cooperating with each other; and a cutting assembly arranged on the first welding die 310 and / or the second welding die 320 and used for cutting the mask body 20 and the mask ear band 10.

[0057] The mask welding device of the embodiment welds the long side and the short side of the mask body 20 by the long-side welding mechanism 40 and the short-side welding mechanism 30 respectively. The short-side welding mechanism 30 realizes the conveying of the ear band 10 by the feeding module 100 and the feeding assembly 200. The limiting groove 150 of the feeding module 100 guides the conveying of the ear band 10. The airflow channel 130 introduces airflow into the limiting groove 150 to drive the ear band 10 to move and convey in the limiting groove 150. Meanwhile, the feeding assembly 200 controls the ear band 10 to limit the free movement of the ear band 10 in the limiting groove 150, so as to ensure that the ear band 10 moves and conveys to a predetermined position (on the short side of the mask body 20).

[0058] After the conveying of the ear band 10 is completed, the first welding assembly 300 acts to weld the short side of the mask body 20 and the ear band 10 at the same time. Meanwhile, the first welding assembly 300 drives the cutting assembly to cut the short side of the mask body 20 and the ear band 10, so as to combine the welding process of the short side of the mask body 20, the welding process of the ear band 10, the cutting process of the short side of the mask body 20 and the cutting process of the ear band 10 into one process, effectively improving the working efficiency of the mask welding device and the production efficiency of the mask. The overall structure is simple and compact, the complex structure design of the traditional mask machine is abandoned, and the equipment failure rate is low.

[0059] In some embodiments, the limiting groove 150 of the feeding module 100 is located on the bottom surface and is a groove structure with an open bottom surface. After the ear loop 10 is conveyed to the predetermined position and cut, it is welded to the short side of the mask body 20 by the first welding component 300. The limiting groove 150 is a groove structure with an open bottom surface, which facilitates the ear loop 10 to be removed from the limiting groove 150 as the mask body 20 is conveyed after welding.

[0060] In the description of this embodiment, the directions of up and down are as follows: Figure 2 As indicated, to facilitate a clear understanding of the structure of the feeding module 100, its bottom surface faces upwards in the illustration. However, in actual production, the bottom surface of the feeding module 100 faces downwards. The fabric for producing the mask body 20 is continuously fed along a predetermined direction. The feeding module 100 is positioned above the mask body 20, with its bottom surface approximately touching the upper surface of the mask body 20. Figure 1 .

[0061] Reference Figure 3 In this embodiment, specifically, the feeding module 100 includes a first feeding module 110 and a second feeding module 120 spaced apart and having a predetermined gap. A first welding assembly 300 is disposed at the predetermined gap. A first limiting groove 111 is provided on the bottom surface of the first feeding module 110, and a second limiting groove 121 is provided on the bottom surface of the second feeding module 120. Both the first limiting groove 111 and the second limiting groove 121 are grooves or recessed structures, i.e., grooves are dug on the bottom surfaces of the first feeding module 110 and the second feeding module 120. 1. The paths in the horizontal direction or in the same plane are semi-circular, and the two are roughly symmetrically distributed. The path formed by the combination of the first limiting groove 111 and the second limiting groove 121 is circular or racetrack-shaped in the horizontal direction or in the same plane. The first and last ends of the first limiting groove 111 form the first ear loop inlet 1111 and the first ear loop outlet 1112, respectively. The first and last ends of the second limiting groove 121 form the second ear loop inlet 1211 and the second ear loop outlet 1212, respectively, so that the ear loop 10 can pass smoothly through the first limiting groove 111 and the second limiting groove 121.

[0062] The first ear band inlet 1111 is opposite to the second ear band outlet 1212, and the first ear band outlet 1112 is opposite to the second ear band inlet 1211. The ear band 10 enters from the first ear band inlet 1111 of the first limiting groove 111, is sent out from the first ear band outlet 1112 of the first limiting groove 111, then enters from the second ear band inlet 1211 of the second limiting groove 121, and is sent out from the second ear band outlet 1212 of the second limiting groove 121. That is, the ear band 10 can continuously and circularly move and convey in the first limiting groove 111 and the second limiting groove 121 in the counterclockwise direction. In order to facilitate the ear band 10 to smoothly enter the second limiting groove 121 through the second ear band inlet 1211 and enter the first limiting groove 111 through the first ear band inlet 1111, the first ear band inlet 1111 and the second ear band inlet 1211 are both provided with a chamfer structure.

[0063] With reference to Figure 4 In the embodiment of the present application, the airflow passage 130 communicating with the second limiting groove 121 is arranged in the second feeding module 120. The airflow passage 130 is arranged to be in communication with the airflow. The airflow flows in the counterclockwise direction through the airflow passage 130 into the first limiting groove 111 and the second limiting groove 121. Under the action of the airflow, the ear band 10 is driven to move and convey in the counterclockwise direction in the first limiting groove 111 and the second limiting groove 121.

[0064] It can be understood that the strength of the airflow can be flexibly selected according to actual conditions, as long as the ear band 10 can be driven or blown to move and convey.

[0065] In the embodiment of the present application, the material inlet passage 140 communicating with the second limiting groove 121 is arranged in the second feeding module 120. The material inlet passage 140 is used for feeding the ear band 10 into the feeding module 100. The airflow passage 130 is arranged adjacent to the material inlet passage 140. The airflow passage 130 intersects with the material inlet passage 140. The airflow enters through the airflow passage 130 and drives the ear band 10 in the material inlet passage 140 to move into the first limiting groove 111 and the second limiting groove 121. At the intersection of the airflow passage 130 and the material inlet passage 140, an acute angle is formed between the central axes of the two, that is, the flow direction of the airflow in the airflow passage 130 and the conveying direction of the ear band 10 in the material inlet passage 140 form an acute angle at the intersection, which is beneficial to the airflow driving the ear band 10 to move and convey.

[0066] In the embodiment of the present application, the position of the moving conveying of the ear band 10 is controlled by the feeding assembly 200. Specifically, the feeding assembly 200 includes two top-contacting rollers 210, the ear band 10 passes between the two rollers 210, the two rollers 210 clamp the ear band 10, at this time the ear band 10 is locked and cannot be moved and conveyed, when the two rollers 210 are synchronously and reversely rotated, the ear band 10 can be moved and conveyed under the action of the airflow by rolling and pressing the ear band 10, when the two rollers 210 stop rotating, the moving conveying of the ear band 10 is paused. In this way, under the double action of the rolling control of the two rollers 210 on the ear band 10 and the airflow driving control on the ear band 10, the end of the ear band 10 can just be exposed from the second ear band outlet 1212 of the second limiting groove 121, and then the ear band 10 is arranged in a ring shape or a racetrack shape in the first limiting groove 111 and the second limiting groove 121, so as to facilitate subsequent welding and cutting processes.

[0067] Through the cooperation of the feeding module 100 and the feeding assembly 200, the ear band 10 is moved and conveyed in the first limiting groove 111 and the second limiting groove 121 and arranged in a ring shape or a racetrack shape, so that two mask ear bands 10 can be welded at one time in the subsequent process, and the short edges of the mask body 20 and the ear band 10 and the mask body 20 can be cut at the same time, thereby effectively improving the production efficiency.

[0068] Among them, the airflow is continuously blown into through the airflow channel 130, which can drive the ear band 10 to move and convey, and the ear band 10 will move and convey with the airflow only when the two rollers 210 are synchronously and reversely rotated. The frequency and time of the rotating action of the two rollers 210 can be controlled to accurately control the conveying position of the ear band 10, that is, the ear band 10 can be selectively locked by controlling the rotating action of the two rollers 210.

[0069] It can be understood that the two rollers 210 can also be synchronously and reversely rotated to pre-convey a predetermined length of the ear band 10, then the two rollers 210 stop rotating to lock the ear band 10, and then the airflow is introduced into the airflow channel 130 to drive the ear band 10 to move and convey in the first limiting groove 111 and the second limiting groove 121 and arranged in a ring shape or a racetrack shape. That is, the airflow can also be set to be intermittently introduced.

[0070] Of course, in some other embodiments, the feeding assembly 200 can also be provided with only one roller 210, the roller 210 is arranged to press against a plane, the ear band 10 passes between the roller 210 and the plane, the roller 210 clamps the ear band 10, at this time the ear band 10 is locked and cannot be moved and conveyed, when the roller 210 rotates, the ear band 10 can be moved and conveyed under the action of the airflow by rolling and pressing the ear band 10, when the roller 210 stops rotating, the moving conveying of the ear band 10 is paused.

[0071] In some other embodiments, the feeding assembly 200 can also be configured as a clamping mechanism capable of clamping or releasing the ear band 10, i.e. capable of selectively locking the ear band 10. In this way, the ear band 10 will only be moved by the airflow when the clamping mechanism releases the ear band 10.

[0072] Referring to Figure 5 In some embodiments, independent airflow channels 130 can be provided on the first feeding module 110 and the second feeding module 120, respectively, to guide the airflow into the first limiting groove 111 and the second limiting groove 121, respectively, to drive the ear band 10 to move and be conveyed.

[0073] It can be understood that the number of airflow channels 130 can also be multiple, and those skilled in the art can flexibly select according to the actual situation, as long as the airflow channels 130 are configured to facilitate the movement and conveying of the ear band 10 under the action of the airflow, for example, the airflow channels 130 are tangent to the first limiting groove 111 and / or the second limiting groove 121.

[0074] Referring to Figure 6 In some embodiments, independent feeding channels 140 can be provided on the first feeding module 110 and the second feeding module 120, respectively, and two feeding assemblies 200 are correspondingly provided to provide two ear bands 10 for conveying into the first limiting groove 111 and the second limiting groove 121, respectively. The rolling control and airflow driving control of each ear band 10 are the same as the foregoing manner, which will not be described here. Each ear band 10 is moved and conveyed to form a semicircle in the first limiting groove 111 and the second limiting groove 121, and the two ear bands 10 are combined with each other to form a ring or a racetrack shape, thereby facilitating the subsequent one-time welding of two mask ear bands 10, and effectively improving the production efficiency.

[0075] Of course, it can be understood that the feeding module 100 can only be provided with a single limiting groove 150 cooperating with a single feeding assembly 200 to guide the ear band 10 to be conveyed in the limiting groove 150 in a semicircle shape, so as to weld the ear band 10 on one side of the mask body 20. In this way, only one mask ear band 10 can be welded at a time.

[0076] In some embodiments, the airflow channel 130 and the feeding channel 140 can be combined into one, i.e. only the airflow channel 130 is provided, and the ear band 10 enters the airflow channel 130, and the airflow directly drives the ear band 10 located in the airflow channel 130 to enter the first limiting groove 111 and the second limiting groove 121.

[0077] Referring to Figure 7 and Figure 8, the airflow channel 130 can be combined with the feeding channel 140, that is, the ear band 10 enters the first limiting groove 111 and the second limiting groove 121 along the airflow channel 130, and airflow is fed into the first limiting groove 111 and the second limiting groove 121 from the airflow channel 130. The airflow channel 130 can be connected with an external hose 131 as an air inlet pipe. An air inlet head 132 is arranged at the end of the hose 131. The air inlet head 132 has an annular groove 1321 in the inside thereof. The annular groove 1321 is open at one end close to the hose 131. A through hole as an air inlet hole 1322 is arranged on the side wall of the air inlet head 132 and is communicated with the annular groove 1321. The ear band 10 enters the airflow channel 130 through the hose 131 and is fed with airflow from the air inlet hole 1322. The airflow carries the ear band 10 into the hose, and then the ear band 10 directly enters the first limiting groove 111 and the second limiting groove 121 from the airflow channel 130.

[0078] In the embodiment of the present application, the first welding assembly 300 is arranged at a predetermined gap between the first feeding module 110 and the second feeding module 120. When the ear band 10 is conveyed to the predetermined position in a ring shape or a racetrack shape by the feeding module 100 and the feeding assembly 200, the first welding assembly 300 is operated to weld the ear band 10 in the ring shape or the racetrack shape on the mask body 20. At the same time of welding, the ear band 10 and the mask body 20 are cut, and then separated to form independent masks.

[0079] Referring to Figure 9 The first welding assembly 300 comprises a first welding die head 310 and a second welding die head 320 arranged above and below and matched with each other. The first welding die head 310 and the second welding die head 320 are driven to close to perform the welding operation. It can be understood that the first welding die head 310 and the second welding die head 320 can be driven to close simultaneously or only one of the two welding die heads is driven to close, and both of them can realize the welding operation. The first welding die head 310 and the second welding die head 320 are used to weld the mask and the ear band 10 by the ultrasonic welding process. The ultrasonic welding process is a conventional technology in the field, and will not be described here.

[0080] The first welding die head 310 and the second welding die head 320 are used to weld the ear band 10 at the same time, and are in contact with the short side of the mask body 20, so that the short side of the mask body 20 can be welded at the same time.

[0081] In the embodiment of the present application, the cutting assembly is arranged on the first welding die 310 and the second welding die 320, that is, the cutting assembly is integrated on the first welding assembly 300, and the cutting assembly is used to cut the mask body 20 and the ear band 10. Specifically, the opening 312 is arranged at the end of the first welding die 310, the cutter 313 for cutting is arranged in the first welding die 310, the cutter 313 extends from the opening 312, and the notch 321 capable of allowing the cutter 313 to extend in is arranged at the end of the second welding die 320. When the first welding die 310 and the second welding die 320 are closed to perform the welding operation, the protruding cutter 313 can cut the mask body 20 and the ear band 10, so that the first welding assembly 300 welds the ear band 10 while cutting the mask body 20 and the ear band 10. Since the ear band 10 is arranged in a ring shape or a track shape and the cutting position is in the middle, the first welding assembly 300 can weld and fix two mask ear bands 10 on the mask body 20 at one time. The cutting process of the mask and the ear band 10 and the welding process of the short side of the mask body 20 and the ear band 10 are combined, the mechanical structure is simplified to the maximum, the mechanical parts are reduced, the failure rate of the mechanical structure is lower, and the structure is simple and the cost is reduced.

[0082] With reference to Figure 10 In some embodiments, the cutting assembly can also have other structural forms, for example, the first welding die 310 is provided with the convex blade 311 protruding at the end, the second welding die 320 is provided with the notch 321 capable of allowing the convex blade 311 to extend in, and when the first welding die 310 and the second welding die 320 are closed to perform the welding operation, the protruding convex blade 311 can cut the mask body 20 and the ear band 10, so that the first welding assembly 300 welds the short side of the ear band 10 and the mask body 20 while cutting the mask body 20 and the ear band 10.

[0083] The short side welding mechanism 30 of the embodiment realizes the conveying of the ear band 10 through the guidance of the limiting groove 150 of the feeding module 100 and the action of the airflow, arranges the ear band 10 in a ring shape or a semi-ring shape on the short side of the mask body 20, avoids the use of the multiple cooperating action clamping hands of the traditional mask machine, simplifies the structure, and arranges the first welding assembly 300 at the ear band inlet 151 and the ear band outlet 152 of the limiting groove 150, that is, at the middle of the ring-shaped ear band 10 or the end of the semi-ring-shaped ear band 10, so that the welding of the ear band 10, the cutting of the ear band 10 and the cutting of the mask body 20 can be realized while the short side of the mask body 20 is welded, and the welding of the mask body 20 and the welding of the ear band 10 can be performed on the same cloth conveying line, without the need to arrange the turning edge conveying line of the traditional mask machine, greatly reducing the length of the production line, improving the production efficiency, and thus avoiding the use of two mask ear band 10 welding devices.

[0084] The mask ear band welding device of the embodiment of the present application can further comprise a stripping assembly 500 for driving the ear band to smoothly separate from the limiting groove, so that the ear band can smoothly move with the mask body 20.

[0085] Referring to Figure 11 , the stripping assembly 500 can be a push rod member 510 arranged in the limiting groove, the pushing direction of the push rod member 510 is consistent with the opening direction of the limiting groove, when the mask and the ear band are welded by the first welding assembly 300, the push rod member 510 is actuated to push the ear band, so that the ear band is stripped out of the limiting groove.

[0086] Referring to Figure 12 , the stripping assembly 500 can also adopt an air pump (not shown), a stripping air hole 520 is arranged in the feeding module 100 and communicates with the limiting groove, the direction of the stripping air hole 520 is consistent with the opening direction of the limiting groove, the air pump is connected with the stripping air hole 520, the air pump provides high-pressure airflow, the airflow enters the limiting groove through the stripping air hole 520, when the mask and the ear band are welded by the first welding assembly 300, the ear band is blown away from the limiting groove by the airflow.

[0087] Of course, when the mask and the ear band are welded by the first welding assembly 300, since the bottom surface of the feeding module 100 is downward, i.e. the opening direction of the limiting groove is downward, the ear band can also separate from the limiting groove under the action of its own gravity.

[0088] Referring to Figures 13 to 15 , in some embodiments, the first feeding module 110 further comprises a first stripping module 112, the first limiting groove 111 of the first feeding module 110 is arranged horizontally inward, i.e. the opening direction of the side opening of the first limiting groove 111 is horizontally inward, the side wall of the first stripping module 112 shields and covers the first limiting groove 111, so that the first limiting groove 111 forms a relatively closed groove, the first stripping module 112 is arranged to be able to move up and down, when the first stripping module 112 moves upward, the first limiting groove 111 is in the form of a structure with the side open; similarly, the second feeding module 120 further comprises a second stripping module 122, the second limiting groove 121 of the second feeding module 120 is arranged horizontally inward, i.e. the opening direction of the side opening of the second limiting groove 121 is horizontally inward, the side wall of the second stripping module 122 shields and covers the second limiting groove 121, so that the second limiting groove 121 forms a relatively closed groove, the second stripping module 122 is arranged to be able to move up and down, when the second stripping module 122 moves upward, the second limiting groove 121 is in the form of a structure with the side open.

[0089] When the mask and ear band are welded by the first welding assembly 300, the first stripper module 112 and the second stripper module 122 are controlled to move upward synchronously, and the ear band located in the first limiting groove 111 and the second limiting groove 121 automatically slides off to realize the stripping operation.

[0090] Referring to Figure 16 In the embodiment, the long side welding mechanism 40 includes two second welding assemblies 400, which are arranged at intervals, and each second welding assembly 400 includes a third welding die head 410 and a fourth welding die head 420 arranged above and below and cooperating with each other, and the welding operation is performed by driving the third welding die head 410 and the fourth welding die head 420 to close.

[0091] The two second welding assemblies 400 weld the two long sides of the mask body 20 respectively, and the third welding die head 410 and the fourth welding die head 420 of a single second welding assembly 400 are arranged above and below and cooperate with each other, and only cooperate with each other during welding. Compared with the traditional mask machine which adopts a rolling method to weld the long side of the mask body 20, the contact wear of the two welding die heads can be reduced, and the quality of the edge welding of the mask body 20 can be improved.

[0092] It can be understood that the cooperative action of the third welding die head 410 and the fourth welding die head 420 can be simultaneous driving of the two welding die heads to close, or only driving of one of the welding die heads to close, both of which can realize the welding action. Similarly, the third welding die head 410 and the fourth welding die head 420 adopt ultrasonic welding process for welding.

[0093] The mask has various specifications, such as adult masks and children masks, and the distance between the two long sides of different specifications of masks is different. The traditional mask machine can only produce one specification and size of mask with one set of die on one machine. In the embodiment, the distance between the two second welding assemblies 400 is adjustable, so that the long side welding of masks of different specifications and sizes can be adapted, and masks of different specifications can be produced.

[0094] It can be understood that adjusting the distance between the two second welding assemblies 400 can be adjusting the positions of the two welding assemblies at the same time, or adjusting the position of only one of the welding assemblies, and it can adopt different structural forms, for example: the second welding assembly 400 is slidably arranged on the rack 90, and adjusting the movement of the second welding assembly 400 can adjust the distance between the two second welding assemblies 400, and after adjustment, it is fixed by a fastener to avoid sliding, for details, please refer to Figure 16The position of the second welding assembly 400 can be adjusted along the long slot 91, or a plurality of mounting positions of the second welding assembly 400 can be arranged on the rack 90, each mounting position corresponding to a different spacing and a different size of the mask.

[0095] One of the long edges of the mask body 20 is usually provided with a nose bridge, and in the embodiment, the end of the third welding die head 410 for welding the long edge of the mask body 20 provided with the nose bridge is provided with a structure 411 for avoiding the nose bridge, which will be described with reference to Figure 17 .

[0096] With reference to Figure 18 The embodiment of the present application also provides a mask manufacturing equipment, which comprises the mask welding device and a cloth conveying mechanism 50, a pleat forming mechanism 60, a nose bridge conveying mechanism 70 and the like.

[0097] With reference to Figure 19 In the embodiment, a case body 80 is arranged outside the mask manufacturing equipment, and the mask welding device and other device mechanisms are arranged in the case body 80, and the case body 80 is arranged to have a positive pressure inside relative to the outside, specifically, a blower 81 or a fan, a gas pump and the like can be arranged in the case body 80, and a gas source filtering device is arranged to prevent unfiltered air from the outside from entering the inside of the equipment, so that a relatively closed environment is formed in the inside of the equipment, and the production of the mask is prevented from being polluted by the outside air or human activities.

[0098] Further, a sterilization device is arranged in the case body 80 to further ensure the cleanliness of the environment in the inside of the equipment, specifically, the sterilization device can be an ultraviolet lamp 82, or the manufactured mask is placed in a high-temperature sterilization space, or ethylene oxide is introduced for sterilization.

[0099] Part of doors can be arranged on the case body 80 to facilitate the output of the mask and the activities of the staff such as cloth replacement, maintenance and the like, and sealing strips are arranged at the frames of the doors to ensure the sealing property.

[0100] The mask manufacturing equipment of the embodiment simplifies the complex structure and process of the traditional mask machine, the traditional mask machine is respectively provided with a plurality of independent mechanisms or devices to respectively complete a plurality of production processes, the mask manufacturing equipment of the embodiment realizes the long edge welding and the short edge welding of the mask through the mask welding device, wherein the short edge welding is simultaneously performed with the welding of the ear band 10, the cutting of the ear band 10 and the cutting of the short edge of the mask, thereby greatly simplifying the production process and the equipment structure, shortening the length of the production line, reducing the overall volume of the equipment, and enabling the equipment to be arranged in a case body 80 to ensure the cleanliness of the production environment and sterilize and disinfect the mask.

[0101] In the description of the present application, it should be understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right and the like, is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0102] In the description of the present application, several meanings are one or more, and the meaning of multiple is two or more, greater than, less than, more than and the like are understood as not including the number, above, below, within and the like are understood as including the number. If the first, second is described, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features or the order of the indicated technical features.

[0103] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installing, connecting and the like should be broadly understood, and the person skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical solution.

[0104] The embodiments of the present application are described in detail above in combination with the drawings, but the present application is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the purpose of the present application.

Claims

1. A mask welding device, characterized in that, It includes a long-side welding mechanism and a short-side welding mechanism. The long-side welding mechanism is used to weld the long side of the mask body. The short-side welding mechanism is located downstream of the long-side welding mechanism and is used to weld the short side of the mask body and the mask ear loops. The short-side welding mechanism includes: The feeding module includes at least one limiting groove and at least one airflow channel communicating with the limiting groove. The limiting groove has an ear loop inlet and an ear loop outlet. The two ends of the limiting groove form an ear loop inlet and an ear loop outlet, respectively. The path of the limiting groove is semi-circular. The airflow channel is configured to allow airflow to enter so that the airflow can drive the ear loop to be conveyed along the limiting groove. A feeding assembly for selectively locking the ear loop to limit ear loop delivery, the feeding assembly being configured as a clamping mechanism capable of clamping or releasing the ear loop to selectively lock the ear loop; A first welding assembly is disposed at the ear loop inlet and ear loop outlet of the feeding module. The first welding assembly includes a first welding die head and a second welding die head that cooperate with each other. A cutting component, which is disposed on the first welding die and / or the second welding die, is used to cut the mask body and the mask ear loops; The feeding module includes a first feeding module and a second feeding module spaced apart and having a predetermined gap. The first feeding module includes a first limiting groove having a first ear loop inlet and a first ear loop outlet. The second feeding module includes a second limiting groove having a second ear loop inlet and a second ear loop outlet. The first ear loop inlet is opposite to the second ear loop outlet, and the first ear loop outlet is opposite to the second ear loop inlet. The first welding component is disposed at the predetermined gap. The ear strap enters from the first ear strap inlet of the first limiting groove, is sent out through the first ear strap outlet of the first limiting groove, enters from the second ear strap inlet of the second limiting groove, and is sent out through the second ear strap outlet of the second limiting groove, so that the ear strap moves and is conveyed within the first limiting groove and the second limiting groove and is arranged in a ring or racetrack shape.

2. The mask welding device according to claim 1, characterized in that: The first welding die head has a protruding blade at its end, and the second welding die head has a recess at its end that mates with the protruding blade.

3. The mask welding device according to claim 1, characterized in that: The first welding die has an opening at its end, and a cutting tool protruding through the opening is disposed inside the first welding die. The second welding die has a notch at its end that mates with the cutting tool.

4. The mask welding device according to claim 1, characterized in that: An infeed channel is provided on the first feeding module and / or the second feeding module, which is connected to the first limiting groove and / or the second limiting groove.

5. The mask welding device according to claim 4, characterized in that: The airflow channel is arranged adjacent to the feed channel, and the airflow channel intersects the feed channel and forms an acute angle at the intersection.

6. The mask welding device according to claim 1, characterized in that: The feeding assembly is configured to include a roller that is pressed against a flat surface. An ear loop passes between the roller and the flat surface. The roller presses down on the ear loop, locking it in place and preventing it from moving during feeding.

7. The mask welding device according to claim 1, characterized in that: The limiting groove is a groove structure with an open bottom or an open side.

8. The mask welding apparatus according to claim 7, characterized in that: It also includes a material removal assembly for disengaging the ear loop from the limiting groove.

9. The mask welding apparatus according to claim 8, characterized in that: A material release air hole is provided in the feeding module and communicates with the limiting groove. The material release air hole is configured to selectively introduce airflow so that the mask ear loops are disengaged from the limiting groove.

10. The mask welding apparatus according to claim 8, characterized in that: The feeding module also includes at least one unloading module that selectively covers the side opening of the limiting groove.

11. The mask welding apparatus according to claim 1, characterized in that: The feeding assembly includes two abutting rollers that press against the ear loop to selectively lock the ear loop.

12. The mask welding apparatus according to claim 1, characterized in that: The long-side welding mechanism includes two second welding components, which are spaced apart. Each second welding component includes a third welding die and a fourth welding die that cooperate with each other.

13. The mask welding apparatus according to claim 12, characterized in that: The spacing between the two second welding components is set to be adjustable.

14. The mask welding apparatus according to claim 10, characterized in that: The unloading module is designed to move up and down. When the unloading module moves upward, the limiting groove has an open side structure.

15. Mask manufacturing equipment, characterized in that, Includes the mask welding apparatus according to any one of claims 1 to 14.

16. The mask manufacturing equipment according to claim 15, characterized in that: It also includes a housing and an air source filter device. The mask welding device is located inside the housing. The housing is configured to have positive pressure inside relative to the outside. The air source filter device is used to filter the air entering the housing.

17. The mask manufacturing equipment according to claim 16, characterized in that: The chassis is equipped with a sterilization device.

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