Mask production line

Abstract

The present invention discloses a mask production line, which includes: a sheet delivery part; a nose bridge strip delivery part; a shaping part, which is arranged in front of the sheet delivery part and folds the stacked sheets; a nose bridge strip cutting part, which is arranged in front of the shaping part, so that the nose bridge strip is fed to one side of the outer sheet and the nose bridge strip is cut; a folding part, which is arranged in front of the nose bridge strip cutting part and folds one side edge of the inner sheet toward one side of the outer sheet; a first welding part, which is arranged in front of the folding part and welds the stacked sheets to form a main body; a main body cutting part, which is arranged in front of the first welding part and cuts the main body relative to the sheet; an ear wire welding part, which is arranged in front of the main body cutting part and welds the ear wire to the main body; and a conveying part, which is used to convey the main body. The mask production line of the present invention can improve the production efficiency of masks.

Description

Technical Field

[0001] The present invention relates to the technical field of mask production, in particular to a mask production line. Background Art

[0002] Masks are commonly used medical devices in daily life, used to prevent the spread of some infectious diseases to a certain extent. For example, masks are worn to deal with infections such as influenza viruses and colds. Among the known mask production technologies, there are already mask production lines for producing masks. However, the production efficiency of existing mask production lines is very low. For example, the existing mask production line can only complete the production of about 60 PCS of masks per minute. In recent years, with the sharp increase in the consumption of masks, the production efficiency of existing mask production lines has been difficult to meet market demand. Summary of the invention

[0003] The present invention aims to solve one of the problems of the prior art. To this end, the present invention proposes a mask production line that can improve the production efficiency of masks.

[0004] According to an embodiment of one aspect of the present invention, a mask production line includes a main body and ear wires, the ear wires are welded to both sides of the main body, the main body has a stacked outer sheet, an intermediate sheet and an inner sheet, a nose bridge strip is arranged in the main body, and the nose bridge strip is wrapped by the outer sheet and the inner sheet, and the mask production line includes: a sheet delivery section, used to continuously deliver the outer sheet, the intermediate sheet and the inner sheet and stack them; a nose bridge strip delivery section, used to continuously deliver the nose bridge strip; a shaping section, arranged in front of the sheet delivery section, folding the stacked outer sheet, the intermediate sheet and the inner sheet; a nose bridge strip cutting section, arranged in front of the shaping section, feeding the nose bridge strip to one side of the outer sheet, and cutting; a folding portion, which is arranged in front of the nose bridge strip cutting portion and folds one side edge portion of the inner sheet toward one side of the outer sheet, so that the nose bridge strip is maintained between the edge portion folded to one side of the outer sheet and the outer sheet; a first welding portion, which is arranged in front of the folding portion and welds the stacked outer sheet, the middle sheet and the inner sheet to form the main body; a main body cutting portion, which is arranged in front of the first welding portion and cuts the main body relative to the outer sheet, the middle sheet and the inner sheet; an ear wire welding portion, which is arranged in front of the main body cutting portion and welds the ear wire to the main body; and a carrying portion, which at least connects the main body cutting portion and the ear wire welding portion and is used to carry the main body.

[0005] The mask production line according to an embodiment of one aspect of the present invention has at least the following beneficial effects: since the degree of automation is improved, the production efficiency of masks can be improved.

[0006] In some embodiments, a flipping portion is provided between the main body cutting portion and the ear wire welding portion, and the flipping portion flips the main body.

[0007] In some embodiments, an ear wire feeding portion is further included, for continuously feeding the ear wire toward the ear wire welding portion.

[0008] In some embodiments, an ear wire shaking portion is provided between the ear wire delivery portion and the ear wire welding portion, and the ear wire is delivered to the ear wire welding portion via the ear wire shaking portion and is shaken by the ear wire shaking portion during the delivery process.

[0009] In some embodiments, the ear wire welding portion includes: an ear wire holding portion, having a first driving component and two ear wire holding components, the ear wire is held in the ear wire holding component, the first driving component drives the ear wire holding component to approach the main body or away from the main body; a first clamping portion, having a second driving component and a plurality of first pressing heads, the first pressing head and the second driving component are connected and respectively located on both sides of the main body, the second driving component drives the first pressing head to approach the main body or away from the main body; a second welding portion, having a second welding head, the second welding head and the first pressing head are opposite to the first pressing head; when the first pressing head is driven downward by the second driving component, the first pressing head presses the ear wire and the main body respectively and abuts against the second welding head, so that the ear wire is welded to both sides of the main body.

[0010] In some embodiments, the first drive assembly includes a second mounting base, and the ear wire retention assembly is rotatably mounted to the second mounting base.

[0011] In some embodiments, each ear wire holding assembly comprises: a holding seat, the ear wire is attached to the outer periphery of the holding seat; two clamping members, respectively installed on the holding seat, and can be opened or closed relative to the holding seat. In the closed state, the ear wire is clamped and held on the holding seat, and in the open state, the ear wire is released.

[0012] In some embodiments, the first clamping portion further includes a closing drive member, which is mounted to the second drive assembly. When driven downward by the second drive assembly, the closing drive member presses the clamping member to close the clamping member relative to the retaining seat.

[0013] In some embodiments, it also includes a line-off portion, which has a third drive assembly and a line-off piece. The line-off piece is connected to the third drive assembly and is driven by the third drive assembly in the up and down directions. When driven downward by the third drive assembly, the line-off piece causes the ear wire to fall off the retaining seat.

[0014] In some embodiments, a edging welding portion is provided in front of the ear wire welding portion, and the edging welding portion includes: an edging sheet feeding portion, which continuously feeds the edging sheet toward the main body, and makes the edging sheet wrap around the two sides of the main body welded with the ear wire; a second clamping portion, which has a fourth driving assembly and a plurality of second pressing heads, and the second pressing heads and the fourth driving assembly are connected and respectively located on both sides of the main body, and the fourth driving assembly drives the second pressing heads to approach the main body or away from the main body; a third welding portion, which has a third welding head, and the third welding head is opposite to the second pressing head; when the second pressing head is driven downward by the fourth driving assembly, the second pressing head presses the edging sheet and the main body respectively and abuts against the third welding head, so that the edging sheet is welded to the two sides of the main body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a stereogram of an embodiment of a mask production line of the present invention.

[0016] Figure 2 yes Figure 1 Side view of the sheet delivery part and the nose bridge strip delivery part.

[0017] Figure 3 yes Figure 1 A three-dimensional view of the plastic part in FIG.

[0018] Figure 4 yes Figure 1 A three-dimensional view of the nose bridge cutting part and the folding part.

[0019] Figure 5 yes Figure 1 A three-dimensional view of the first welding portion in FIG.

[0020] Figure 6 yes Figure 1 A partial three-dimensional view of the transport portion and the flipping portion.

[0021] Figure 7 yes Figure 1 A three-dimensional view of the ear wire welding part from the top view.

[0022] Figure 8 yes Figure 7 A three-dimensional view of the ear wire welding part as viewed from above.

[0023] Fig. 9 yes Figure 7 A three-dimensional view of the ear wire holding portion and the first pressing portion.

[0024] Fig.10 It is a three-dimensional view of the ear wire holding assembly and the rotation drive unit.

[0025] Fig.11 yes Fig.10 A stereoscopic view of the ear wire retention assembly in FIG.

[0026] Fig.12 It is a three-dimensional view of the ear wire holding assembly and the wire removal part.

[0027] Fig.13 yes Fig.12 A three-dimensional view of the off-line part.

[0028] Fig.14 It is a three-dimensional view of the ear wire retaining assembly and the lead wire assembly.

[0029] Fig.15 yes Figure 1 A three-dimensional view of the ear wire delivery part.

[0030] Fig.16 yes Figure 1 A three-dimensional view of the hemming welding part.

[0031] Fig.17 It is a schematic diagram of an embodiment of a mask.

[0032] Fig.18 yes Fig.17 Schematic diagram of the side view direction of the mask. DETAILED DESCRIPTION

[0033] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0034] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0035] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0036] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0037] Fig.17 , Fig.18 is a schematic diagram of a mask 300. Fig.17 , Fig.18 Before describing the mask production line 100 of the present invention, the structure of the mask 300 is first described. Specifically, the mask 300 includes a main body 301 and ear wires 302. The main body 301 is the part that covers the mouth and nose of a person, and has a stacked outer sheet 303, an intermediate sheet 304, and an inner sheet 305. A nose bridge strip 306 is arranged in the main body 301, and the nose bridge strip 306 is wrapped by the outer sheet 303 and the inner sheet 305. The ear wire 302 is a rope that is hung on the ear of a person. The ear wire 302 includes two wires, which are welded to both sides of the main body 301 respectively.

[0038] Figure 1 is a stereogram of an embodiment of a mask production line 100, referring to Figure 1 According to an embodiment of one aspect of the present invention, a mask production line 100 includes: a sheet delivery section 101, a nose strip delivery section 102, a shaping section 103, a nose strip cutting section 104, a folding section 105, a first welding section 106, a main body cutting section 107, an ear line welding section 200 and a conveying section 108.

[0039] The sheet discharging section 101 is used to continuously discharge the outer layer sheet 303, the middle layer sheet 304 and the inner layer sheet 305 and stack them.

[0040] Among them, the nose bridge strip delivery part 102 is used to continuously deliver the nose bridge strip 306.

[0041] The shaping section 103 is disposed in front of the sheet delivery section 101 (here, the front refers to the front of the direction in which the sheets are delivered), and folds the stacked outer sheet 303 , the middle sheet 304 , and the inner sheet 305 .

[0042] Among them, the nose bridge strip cutting part 104 is arranged in front of the shaping part 103, so that the nose bridge strip 306 is fed to one side of the outer sheet 303 and the nose bridge strip 306 is cut.

[0043] Among them, the folding portion 105 is arranged in front of the nose bridge strip cutting portion 104, and the edge portion 307 of one side of the inner sheet 305 is folded toward the side of the outer sheet 303, so that the nose bridge strip 306 is maintained between the edge portion 307 folded to one side of the outer sheet 303 and the outer sheet 303.

[0044] The first welding portion 106 is disposed in front of the folding portion 105 , and is used to weld the stacked outer sheet 303 , the middle sheet 304 , and the inner sheet 305 to form the main body 301 .

[0045] The main body cutting portion 107 is disposed in front of the first welding portion 106 , so that the main body 301 is cut relative to the outer layer sheet 303 , the middle sheet 304 and the inner layer sheet 305 .

[0046] The ear wire welding portion 200 is disposed in front of the main body 301 to weld the ear wire 302 to the main body 301 .

[0047] The conveying portion 108 at least connects the main body cutting portion 107 and the ear wire welding portion 200 , and is used for conveying the main body 301 .

[0048] In this embodiment, since the degree of automation of the mask production line 100 is improved, the production efficiency of the masks can be improved.

[0049] The following is a detailed description of each component.

[0050] [Sheet delivery section 101]

[0051] Reference Figure 2 , and auxiliary reference Figure 1The sheet material delivery section 101 is used to continuously deliver the outer layer sheet 303, the middle sheet 304 and the inner layer sheet 305 and stack them. Specifically, the sheet material delivery section 101 includes a first roll material feeding device 109, a second roll material feeding device 110 and a third roll material feeding device 111. Among them, the first roll material feeding device 109 is used to deliver the rolled non-woven fabric as the outer layer sheet 303. The second roll material feeding device 110 is used to deliver the rolled melt-blown fabric as the middle sheet 304. The third roll material feeding device 111 is used to deliver the rolled non-woven fabric as the inner layer sheet 305. The first roll material feeding device 109, the second roll material feeding device 110 and the third roll material feeding device 111 can be respectively known, for example, constant tension roll feeding devices. In addition, the sheet feeding section 101 may further include three deflection correctors 112, which are respectively arranged corresponding to the first roll material feeding device 109, the second roll material feeding device 110 and the third roll material feeding device 111, so as to ensure that each sheet is accurately fed out.

[0052] In addition, the sheet delivery unit 101 may further include a plurality of guide rollers (not shown), which are used to allow the outer layer sheet 303 , the middle layer sheet 304 , and the inner layer sheet 305 to be stacked and loaded from the same position.

[0053] [Nose bridge strip delivery unit 102]

[0054] Continue to refer to Figure 2 And auxiliary reference Figure 1 The nose bridge strip delivery part 102 is used to continuously deliver the nose bridge strip 306. Specifically, the nose bridge strip delivery part 102 and the sheet delivery part 101 are arranged on the same side. The nose bridge strip delivery part 102 includes a fourth roll material feeding device 113. Similarly, the fourth roll material feeding device 113 can select a nose bridge strip feeding device known in the mask machine.

[0055] [Shaping section 103]

[0056] Reference Figure 3 And auxiliary reference Figure 1 The shaping section 103 is arranged in front of the sheet delivery section 101, and folds the stacked outer sheet 303, the middle sheet 304 and the inner sheet 305. Specifically, the main body 301 of the mask has, for example, three layers of folds in the approximate middle position. In order to form the three layers of folds, the shaping section 103 includes, for example, three folding sections 114. Each folding section 114 includes two approximately L-shaped folding sheet metal parts 115 in the upper and lower directions. The folding sheet metal parts 115 fold the stacked outer sheet 303, the middle sheet 304 and the inner sheet 305 during the delivery process. As a result, the outer sheet 303, the middle sheet 304 and the inner sheet 305 delivered in a roughly horizontal shape are folded into three layers after passing through the shaping section 103.

[0057] [Nose bridge cutting portion 104]

[0058] Reference Figure 4 , and auxiliary reference Figure 1 The nose bridge strip cutting section 104 is arranged in front of the shaping section 103, so that the nose bridge strip 306 is fed to one side of the outer sheet 303, and the nose bridge strip 306 is cut. Specifically, the nose bridge strip cutting section 104 includes a first base 116, a cloth guide plate 117, a second base 118, a plurality of wire feed wheels 119, a cutter seat 120 and a wire cutting wheel 121. Among them, the first base 116 is used to support each sheet. The cloth guide plate 117 is installed above the first base 116, and is used to limit and guide each sheet. The second base 118 is installed on the first base 116. A plurality of wire feed wheels 119 and a cutter seat 120 are respectively installed on the second base 118, and the wire feed wheels 119 and the cutter seat 120 are opposite. The nose bridge strip 306 delivered from the nose bridge strip delivery portion 102 is delivered to the cutter seat 120 and clamped by the wire feeding wheel 119 and the cutter seat 120. In addition, the front end portion of the nose bridge strip 306 falls onto the sheet. The wire feeding wheel 119 can be driven by, for example, a motor, whereby the wire feeding wheel 119 drives the nose bridge strip 306 to be delivered. In addition, in order to guide the nose bridge strip 306, for example, a guide plate 122 can be provided on the cutter seat 120. The wire cutting wheel 121 is also mounted on the second base 118, and the wire cutting wheel 121 is mounted in front of the wire feeding wheel 119 to cut the nose bridge strip 306. The cut nose bridge strip 306 is transported forward along with the sheet.

[0059] [Folding portion 105]

[0060] Continue to refer to Figure 4 The folding portion 105 is arranged in front of the nose bridge strip cutting portion 104, and folds the edge portion 307 of one side of the inner layer sheet 305 toward the side of the outer layer sheet 303, so that the nose bridge strip 306 is held between the edge portion 307 folded to one side of the outer layer sheet 303 and the outer layer sheet 303. Specifically, the folding portion 105 includes, for example, a folding sheet metal 123, which can be installed at the front of the first base 116 of the nose bridge strip cutting portion 104, and is located on both sides of the fabric guide plate 117. The distance between the two folding sheet metals 123 is smaller than the width of the inner layer sheet 305. Thus, when the inner sheet 305 is conveyed to the position between the two folded sheet metal parts 123, the edges 307 on both sides of the inner sheet 305 are folded toward one side of the outer sheet 303 (the outer sheet 303 is at the uppermost layer, and the inner sheet 305 is at the lowermost layer). Thus, the nose bridge 306 is held between the edge 307 folded to one side of the outer sheet 303 and the outer sheet 303.

[0061] [First welding portion 106]

[0062] Reference Figure 5 And auxiliary reference Figure 1 The first welding part 106 is arranged in front of the folding part 105, and welds the stacked outer sheet 303, the middle sheet 304 and the inner sheet 305 to form the main body 301. Specifically, the first welding part 106 includes two first welding heads 124, two coaxially arranged first knurling wheels 125, a second knurling wheel 126 and a plurality of clamping roller groups 127. The two first welding heads 124 can be, for example, ultrasonic welding heads, and are arranged below the sheets.

[0063] The two first knurling wheels 125 are respectively located on both sides of the width direction of the sheet and are located above the sheet. The knurling of the first knurling wheel 125 is distributed along the circumference of the first knurling wheel 125. As a result, the first knurling wheel 125 can press knurling on both sides of the width direction of the sheet. The two first knurling wheels 125 are opposite to one of the first welding heads 124, and press both sides of the width direction of the sheet to the first welding head 124 respectively. As a result, while the first knurling wheel 125 presses knurling on both sides of the width direction of the outer sheet 303, the middle sheet 304 and the inner sheet 305, both sides of the width direction of the outer sheet 303, the middle sheet 304 and the inner sheet 305 are welded respectively through the first welding head 124. In this way, the two sides of the width direction of the sheet can be reliably welded, and the bridge of the nose 306 can be effectively maintained on one side.

[0064] The second knurling wheel 126 is arranged in front of the first knurling wheel 125. The second knurling wheel 126 is located above the sheet and spans the sheet in the width direction of the sheet. The outer circumference of the second knurling wheel 126 is provided with only one knurling. The knurling of the second knurling wheel 126 extends in the axial direction. The length of the knurling of the second knurling wheel 126 is greater than the width of the sheet, thereby ensuring that the knurling of the second knurling wheel 126 can span the sheet. The second knurling wheel 126 is opposite to another first welding head 124, and presses both sides of the length direction of the main body 301 (i.e., both sides where the ear wires are welded) to another first welding head 124. Thus, while the second knurling wheel 126 presses the knurling on both sides of the length direction of the outer sheet 303, the middle sheet 304 and the inner sheet 305, both sides of the length direction of the outer sheet 303, the middle sheet 304 and the inner sheet 305 are welded respectively through another first welding head 124.

[0065] The clamping roller set 127 and the first knurling wheel 125 and the second knurling wheel 126 are spaced apart along the sheet delivery direction. Specifically, a clamping roller set 127 can be respectively arranged between the first knurling wheel 125 and the second knurling wheel 126, between the second knurling wheel 126 and the slicing wheel 128 (described later), and in front of the slicing wheel 128. Thus, the sheet or the main body 301 can be reliably conveyed.

[0066] [Main body cutting portion 107]

[0067] Continue to refer to Figure 5 The main body cutting section 107 is arranged in front of the first welding section 106, so that the main body 301 is cut relative to the outer sheet 303, the middle sheet 304 and the inner sheet 305. Specifically, the main body cutting section 107 includes a slicing wheel 128, and the slicing wheel 128 is arranged in front of the second knurling wheel 126. After the second knurling wheel 126 completes the pressing and knurling of both sides of the length direction of the outer sheet 303, the middle sheet 304 and the inner sheet 305, the slicing wheel 128 cuts the sheet, thereby completing the manufacture of one of the main bodies 301, and cutting the main body 301 and the delivered sheet.

[0068] [Reversal section 129]

[0069] Reference Figure 6 And auxiliary reference Figure 1 In addition, in the above embodiment, the outer sheet 303 is located on the upper side and the inner sheet 305 is located on the lower side. When the ear wire 302 is welded to the outer sheet 303, the main body 301 can be directly transported to the ear wire welding part 200 for welding. When the ear wire 302 is welded to the inner sheet 305, the main body 301 needs to be flipped before welding. In some embodiments, in order to flip the main body 301, a flipping part 129 is provided between the main body cutting part 107 and the ear wire welding part 200, and the flipping part 129 flips the main body 301. Specifically, the flipping part 129 may include a flipping motor 130 and a flipping block 131, and the flipping motor 130 drives the flipping block 131 to rotate. The flip block 131 is disposed, for example, below the belt line of the conveying section 108. When the main body 301 is sent to the bottom of the flip block 131, the flip motor 130 drives the flip block 131 to rotate, so that the flip block 131 flips the main body 301 and drops it again onto the belt of the conveying section 108. By providing the flip part 129, the inner sheet 305 of the main body 301 can be directed upward, so that the ear wire can be easily welded to the inner sheet 305 at the ear wire welding section 200.

[0070] [Ear wire welding part 200]

[0071] Reference Figure 7 , Figure 8 And continue to refer to Figure 1The ear wire welding part 200 is arranged in front of the main body cutting part 107, and welds the ear wire 302 to the main body 301. Specifically, the ear wire welding part 200 includes: a workbench 201, a first mounting seat 202, an ear wire holding part 203, a first pressing part 204 and a second welding part 205. Among them, the workbench 201 is used to hold the main body 301 of the mask 300. The first mounting seat 202 is arranged above the workbench 201. The ear wire holding part 203 has a first driving component 206 and two ear wire holding components 207. The first driving component 206 is installed on the first mounting seat 202. The ear wire holding components 207 are respectively connected to the first driving component 206 and driven by the first driving component 206 in the up and down direction to approach the main body 301 or away from the main body 301. The ear wire 302 is held in the ear wire holding component 207 and is respectively located on both sides of the main body 301. The first pressing part 204 has a second driving assembly 208 and a first pressing head 209. The second driving assembly 208 is mounted on the first mounting seat 202. The first pressing head 209 includes a plurality of pressing heads. The first pressing head 209 is connected to the second driving assembly 208 and is respectively located on both sides of the main body 301, and is driven by the second driving assembly 208 in the up-down direction to approach the main body 301 or to move away from the main body 301. The second welding part 205 is arranged below the workbench 201. The second welding part 205 has a second welding head 210. The second welding head 210 and the first pressing head 209 are opposite to each other in the up-down direction. When the first pressing head 209 is driven downward by the second driving assembly 208, the first pressing head 209 presses the ear wire 302 and the main body 301 respectively and abuts against the second welding head 210, so that the ear wire 302 is welded to both sides of the main body 301.

[0072] In this embodiment, since the first driving assembly 206 that independently drives the ear wire holding assembly 207 and the second driving assembly 208 that independently drives the first pressing head 209 are provided, the action of feeding the ear wire 302 toward the main body 301 of the mask 300 and the action of welding the ear wire 302 to the main body 301 of the mask 300 can be performed almost simultaneously. Therefore, the welding efficiency of the ear wire 302 of the mask 300 can be greatly improved.

[0073] Specifically, the workbench 201 can be disposed on the base 211 for loading the main body 301. The main body 301 is delivered to the workbench 201 by, for example, a conveyor belt 212. The workbench 201 is located below the conveyor belt 212.

[0074] Specifically, the first mounting base 202 can be erected above the workbench 201 by, for example, a supporting column 213 or the like.

[0075] Specifically, the second welding part 205 can use a welding device known to those skilled in the art, such as an ultrasonic welding device, and the welding head is an ultrasonic welding head.

[0076] Reference Fig. 9 , and continue to refer to Figure 7 In some embodiments, in order to optimize the installation positions of the first drive assembly 206 and the second drive assembly 208, so as to easily lay out the two ear wire holding assemblies 207 and the first pressing head 209, the second drive assembly 208 includes two, which are respectively located on both sides of the first drive assembly 206, and the first pressing head 209 includes four, wherein two first pressing heads 209 are respectively connected to one of the second drive assemblies 208, and the other two first pressing heads 209 are respectively connected to another second drive assembly 208. Specifically, the first drive assembly 206 is located in the middle of the first mounting seat 202, and drives the two ear wire holding assemblies 207 holding the ear wires 302 to move downward and abut against the main body 301. The second drive assembly 208 is located on both sides of the first mounting seat 202, and each drives the two first pressing heads 209 to press down, so as to press the two ends of the ear wires 302 to the main body 301 respectively. Thus, the positions of the ear wire holding assembly 207 and the first pressing head 209 can be reasonably laid out according to the structure of the mask 300, so that the mechanism is more compact.

[0077] The first drive assembly 206 includes a first actuator 214, a first linear guide 215 for guiding the first actuator 214, a second mounting seat 216 and a first floating joint 217. The first actuator 214 is selected from a linear actuator such as an electric cylinder or a pneumatic cylinder. From the perspective of further improving the efficiency of the ear wire welding part 200 and reducing the noise of the device, an electric cylinder is preferred. The first linear guide 215 is selected from a linear guide shaft or a linear guide rail. From the perspective of installation convenience, a linear guide shaft is preferred. In addition, in order to make the structure of the first drive assembly 206 more compact, the first linear guide 215 is mounted to the first pressure head mounting plate 218 (described below) of the second drive assembly 208. The second mounting seat 216 is floatingly connected to the first actuator 214 through the first floating joint 217. In addition, a first linear bearing 219 is mounted on the second mounting seat 216, and the first linear bearing 219 slides along the first linear guide 215. The ear wire holding assembly 207 is mounted on the second mounting seat 216. Thus, when the first actuator 214 drives the second mounting seat 216 to move up and down, the two ear wire holding assemblies 207 move together with the second mounting seat 216 .

[0078] The second drive assembly 208 includes a second actuator 220, a second linear guide 221 for guiding the second actuator 220, a first ram mounting plate 218, and a second floating joint 222. The second actuator 220 is selected from linear actuators such as electric cylinders and pneumatic cylinders. From the perspective of further improving the efficiency of the ear wire welding part 200 and reducing the noise of the device, an electric cylinder is preferred. The second linear guide 221 is selected from linear guide shafts or linear guide rails. From the perspective of installation convenience, a linear guide shaft is preferred. The second linear guide 221 includes two parts, which are respectively connected to the first ram mounting plate 218. The first ram mounting plate 218 is connected to the driving end of the second actuator 220 through the second floating joint 222. In addition, the first linear guide 215 of the first drive assembly 206 is also installed on the first ram mounting plate 218. The two first rams 209 are respectively installed at the axial distal ends of the first linear guide 215. Thus, when the second actuator 220 drives the first ram mounting plate 218 to move up and down, the two first rams 209 move up and down together with the first ram mounting plate 218 .

[0079] In this embodiment, since the first driving assembly 206 and the second driving assembly 208 operate almost simultaneously, the guide member of one driving assembly can be disposed on the other driving assembly, which can make the structure more compact.

[0080] Continue to refer to Fig. 9 , and auxiliary reference Figure 8 Furthermore, in the case of using the electric cylinder as the second actuator 220, in order to prevent the electric cylinder from being overloaded after the first ram 209 abuts against the second welding head 210, the first ram mounting plate 218 is arranged to be hung on the driving end of the second actuator 220 through the second floating joint 222. A buffer 223 such as a spring is arranged between the first ram mounting plate 218 and the driving end of the second actuator 220. Thus, the first ram mounting plate 218 and the driving end of the second actuator 220 are kept stable in the up-down direction. After the first ram 209 abuts against the second welding head 210, even if the electric cylinder continues to be driven, since the output rod of the electric cylinder as the driving end of the second actuator 220 can continue to extend by compressing the buffer 223, the electric cylinder can be prevented from being overloaded.

[0081] Reference Fig.10 , and continue to refer to Figure 7In some embodiments, in order to improve the efficiency of feeding the ear wire 302, the ear wire holding assembly 207 is rotatably mounted to the second mounting seat 216. The ear wire holding assembly 207 includes a holding seat 224, on which a first rotating shaft 225 is mounted. Correspondingly, a bearing 226 is mounted on the second mounting seat 216, and the first rotating shaft 225 is rotatably mounted to the bearing 226. Thus, the ear wire holding assembly 207 can be rotatably mounted to the second mounting seat 216. By rotatably mounting the ear wire holding assembly 207 to the second mounting seat 216, the ear wire 302 can be rotatably fed. While the ear wire 302 on one side of the ear wire holding assembly 207 abuts against the main body 301 and is welded, the other side of the ear wire holding assembly 207 can simultaneously perform the action of feeding the ear wire 302. After the ear wire 302 on one side of the ear wire holding assembly 207 is welded, the ear wire holding assembly 207 can be quickly switched by rotating the ear wire holding assembly 207. Thus, the welding action of the ear wire 302 and the feeding action of the ear wire 302 can be performed simultaneously, which can shorten the production cycle and improve the feeding efficiency of the ear wire 302.

[0082] In some embodiments, in order to easily drive the ear wire holding assembly 207 to rotate, two rotation driving parts 227 are further included, and the rotation driving parts 227 are respectively connected to the ear wire holding assembly 207 and respectively drive the ear wire holding assembly 207 to rotate. Specifically, one of the rotation driving parts 227 is connected to one ear wire holding assembly 207, and the other rotation driving part 227 is connected to another ear wire holding assembly 207. The rotation driving part 227 can be installed on the second mounting seat 216 or on the base 211. In order to make the structure of the ear wire holding part 203 more compact, preferably, the rotation driving part 227 is installed on the base 211. The rotation driving part 227 as a driving element can include, for example, a first motor 228, and the first motor 228 and the first rotating shaft 225 of the ear wire holding assembly 207 are connected by, for example, a first transmission mechanism 229. The first transmission mechanism 229 can be selected, for example, a synchronous belt transmission mechanism, a belt transmission mechanism, etc. Thus, the ear wire holding assembly 207 can be easily driven to rotate. In addition, since the rotating drive unit 227 is installed on the base 211, and the ear wire holding assembly 207 is driven by the first driving assembly 206 to move up and down, that is, there is a relative movement between the ear wire holding assembly 207 and the rotating drive unit 227 in the up and down directions. In order to prevent the synchronous belt of the synchronous belt transmission mechanism from falling off, for example, the length of the synchronous belt can be appropriately increased.

[0083] Fig.11 yes Fig.10 A perspective view of the ear wire retaining assembly 207 in FIG. Fig.11 In order to facilitate observation, the retaining seat 224 is partially cut open, referring to Fig.11 , and continue to refer to Fig.10 In some embodiments, in order to easily hold the ear wire 302. Each ear wire holding assembly 207 further includes: two clamping members 230. Among them, the ear wire 302 is attached to the outer periphery 224a of the holding seat 224. The two clamping members 230 are respectively installed on the holding seat 224, and can be opened or closed relative to the holding seat 224. In the closed state, the clamping member 230 clamps and holds the ear wire 302 in the holding seat 224, and in the open state, the clamping member 230 releases the ear wire 302. Specifically, the outer periphery of the holding seat 224 is roughly arc-shaped, so that the rotation radius of the ear wire holding assembly 207 is roughly the same. Among the two clamping members 230, one clamping member 230 is located on one side of the holding seat 224, and is used to clamp the ear wire 302 on one side of the holding seat 224. The other clamping member 230 is located on the other side of the holding seat 224, and is used to clamp the ear wire 302 on the other side of the holding seat 224. The clamping member 230 is rotatably mounted to the holding seat 224 via the second rotating shaft 231. In addition, the clamping member 230 is provided with a protrusion 232, and correspondingly, a spring sheet 233 is mounted on the holding seat 224, and a marble 234 is carried on the spring sheet 233. The clamping member 230 squeezes the marble 234 through the protrusion 232 to deform the spring sheet 233, so that the protrusion 232 is stably maintained at the position after switching positions on both sides of the marble 234. In this way, the clamping member 230 can be stably maintained in the open state or the closed state.

[0084] Continue to refer to Fig.10 , and auxiliary reference Fig. 9 , Fig.11In some embodiments, in order to easily drive the clamping member 230, the first pressing part 204 further includes a closing driving member 235, which is mounted on the second driving assembly 208. When driven downward by the second driving assembly 208, the closing driving member 235 presses the clamping member 230 so that the clamping member 230 is closed relative to the retaining seat 224. Specifically, the closing driving member 235 can be mounted on the first pressing head 209 and act simultaneously with the first pressing head 209. Among the two clamping members 230, one of the clamping members 230 (also referred to as the first clamping member 230a for ease of explanation) is in a closed state, and the first clamping member 230a clamps the end of the ear wire 302 for welding to the current main body 301. The other clamping member 230 (also referred to as the second clamping member 230b for ease of explanation) is in an open state, and the second clamping member 230b is used to prepare to clamp the end of the ear wire 302 of the next main body 301. The ear wire 302 is in a state of continuous wire feeding. When the first pressing head 209 presses the ear wire 302 and the main body 301 onto the second welding head 210 at the same time and performs welding, the closing driving member 235 presses the second clamping member 230b (it should be noted that at this time, the opening driving member 246 described later simultaneously opens the first clamping member 230a). As a result, the second clamping member 230b is closed relative to the retaining seat 224 and clamps the ear wire 302 (that is, at this time, the second clamping member 230b clamps the end of the ear wire 302 of the next main body 301). After the second clamping member 230b clamps the ear wire 302, the ear wire cutting unit 236 described later cuts the ear wire 302. Thus, the clamping member 230 can be easily driven to complete the welding of the ear wire 302 of the current main body 301 while quickly completing the preparation of the ear wire 302 of the next main body 301 by closing the clamping member 230 (i.e., the second clamping member 230b), thereby shortening the production cycle and greatly improving the production efficiency of the ear wire welding part 200.

[0085] Reference Fig.12 , Fig.13In the case where the clamping member 230 clamps the ear wire 302 on the retaining seat 224, when the rotating driving unit 227 drives the retaining seat 224 to rotate, the ear wire 302 is wound around the outer periphery 224a of the retaining seat 224 due to its own tension. After the welding of the ear wire 302 is completed, it is necessary to make the welded ear wire 302 fall off from the retaining seat 224. In some embodiments, in order to make the welded ear wire 302 fall off from the retaining seat 224, a line-off section 237 is further included. The line-off section 237 has a third driving assembly 238 and a line-off member 239. The line-off member 239 is connected to the third driving assembly 238 and is driven by the third driving assembly 238 in the up-down direction. When driven downward by the third driving assembly 238, the line-off member 239 makes the ear wire 302 fall off from the retaining seat 224. Specifically, the third driving assembly 238 includes a second motor 240, a second transmission mechanism 241, a third transmission mechanism 242 and a third linear guide 243. Among them, from the perspective of making the structure of the second mounting seat 216 more compact, the second motor 240 is installed on the base 211. In addition, the third transmission mechanism 242 and the third linear guide 243 are installed on the second mounting seat 216. The second transmission mechanism 241 is selected, for example, a synchronous belt transmission mechanism or a belt transmission mechanism. The third transmission mechanism 242 is selected, for example, an eccentric wheel structure, that is, the third transmission mechanism 242 includes an eccentric connecting member 244 and a transmission connecting rod 245. The eccentric connecting member 244 is connected to the second motor 240 through the second transmission mechanism 241, and is driven to rotate by the second motor 240. One end of the transmission connecting rod 245 is connected to the eccentric connecting member 244, and the other end is connected to the third linear guide 243. The off-line member 239 is connected to the third linear guide 243. As a result, the second motor 240 converts the rotational motion into a linear motion through the eccentric wheel structure, and drives the off-line member 239 to move up and down. In this embodiment, due to the use of a motor and an eccentric wheel structure, the driving speed of the third driving assembly 238 can be greatly increased, thereby increasing the switching speed of the de-threading member 239. By increasing the switching speed of the de-threading member 239, the de-threading speed of the ear wire 302 can be increased, the production cycle can be shortened, and the welding efficiency of the ear wire welding portion 200 can be increased.

[0086] In some embodiments, in order to easily remove the wire, the wire removal part 237 further has an opening driving member 246, which is connected to the third driving assembly 238 and driven by the third driving assembly 238 in the up-down direction. When driven downward by the third driving assembly 238, the opening driving member 246 presses the clamping member 230, so that the clamping member 230 is opened relative to the retaining seat 224. Specifically, the opening driving member 246 can be connected to the transmission connecting rod 245, and move simultaneously with the wire removal member 239. When the wire removal member 239 removes the ear wire 302 from the outer periphery 224a of the retaining seat 224, the opening driving member 246 presses the clamping member 230 (for example, the first clamping member 230a mentioned above), thereby the end of the ear wire 302 clamped by the clamping member 230 falls off. By setting the opening drive member 246 to be connected to the third drive assembly 238 and to act simultaneously with the wire-off member 239, not only can the structure be made more compact, but also because the wire-off action and the action of opening the clamping member 230 are almost performed simultaneously, the production cycle can be shortened, and the efficiency of the ear wire welding part 200 can be further improved.

[0087] Fig.14 is a stereogram of the ear wire holding assembly 207 and the lead assembly 247, see Fig.14 And auxiliary reference Figure 7 In some embodiments, in order to reliably feed the ear wire 302, the ear wire holding portion 203 further includes two lead wire assemblies 247, which are respectively mounted on the second mounting seat 216 and elastically abut the two holding seats 224, so that the ear wire 302 is delivered to the holding seat 224. Specifically, an ear wire delivery portion 132 (described below) can be provided on the base 211, and the delivered ear wire 302 abuts the two holding seats 224 via the two lead wire assemblies 247. The lead wire assembly 247 includes a lead wire mounting plate 248, a third rotating shaft 249, a lead wire barrel 250, and a tension spring 251. The lead wire mounting plate 248 is mounted on the second mounting seat 216, so that the lead wire assembly 247 is mounted on the second mounting seat 216. The third rotating shaft 249 is rotatably mounted on the lead wire mounting plate 248. A lead wire barrel 250 is mounted on one end of the third rotating shaft 249. One end of the lead reel 250 abuts against the retaining seat 224. One end of the tension spring 251 is hung on the third rotating shaft 249, and the other end is hung on the lead wire mounting plate 248. The tension spring 251 holds one end of the lead reel 250 against the retaining seat 224. Thus, when the retaining seat 224 is driven to rotate by the rotation drive unit 227, the lead reel 250 can also be kept against the retaining seat 224, so that the ear wire 302 can be reliably fed, and the ear wire 302 is prevented from falling off from the retaining seat 224 when the retaining seat 224 rotates.

[0088] Continue to refer to Figure 7In some embodiments, in order to cut the ear wire 302, an ear wire cutting unit 236 is further included, and the ear wire cutting unit 236 cuts the ear wire 302. Specifically, the ear wire cutting unit 236 is disposed on, for example, the base 211, and the ear wire cutting unit 236 can use a known device for cutting linear objects, for example, a cylinder or a motor can be used to drive a cutting knife to cut the ear wire 302.

[0089] [Ear wire delivery unit 132]

[0090] Continue to refer to Figure 1 In some embodiments, an ear wire delivery unit 132 is further included for continuously delivering the ear wire 302 toward the ear wire welding unit 200. Similarly, the ear wire delivery unit 132 can be configured with reference to, for example, the ear wire delivery method of the known mask production line 100, which will not be described in detail herein.

[0091] [Ear wire shaking unit 133]

[0092] Reference Fig.15 And auxiliary reference Figure 1 In some embodiments, in order to prevent the ear wire 302 from getting tangled, which may cause the mask production line 100 to have a reduced efficiency or even stop, an ear wire shaking unit 133 is provided between the ear wire delivery unit 132 and the ear wire welding unit 200. The ear wire 302 is delivered to the ear wire welding unit 200 via the ear wire shaking unit 133, and is shaken by the ear wire shaking unit 133 during the delivery process. Specifically, the ear wire shaking unit 133 may include a shaking motor 134, a swing plate 135, and a swing connecting rod 136. The swing plate 135 is hinged to the shaking motor 134 through the swing connecting rod 136. Thus, when the shaking motor 134 is driven, the swing plate 135 is swung around the rotation axis of the swing connecting rod 136 through the swing connecting rod 136. Both ends of the swing plate 135 are respectively provided with holes 137 for allowing the ear wire 302 to pass through. Thus, when the ear wire 302 is sent out, the ear wire 302 is swung along with the swing of the swing plate 135, and the ear wire 302 can be prevented from being tangled to a certain extent.

[0093] [Edge welding part 138]

[0094] Reference Fig.16 , and auxiliary reference Figure 1In some embodiments, in order to improve the quality of the mask 300, a edging welding part 138 is provided in front of the ear wire welding part 200. The edging welding part 138 includes: an edging sheet material delivery part 139, a second pressing part 140 and a third welding part (not shown, opposite to the second pressing part 140). The edging sheet material delivery part 139 continuously delivers the edging sheet material 308 toward the main body 301, and makes the edging sheet material 308 wrap the two sides of the main body 301 where the ear wire 302 is welded. The second pressing part 140 has a fourth driving component 141 and a plurality of second pressing heads 142. The second pressing head 142 and the fourth driving component 141 are connected and respectively located on both sides of the main body 301. The fourth driving component 141 drives the second pressing head 142 to approach the main body 301 or to move away from the main body 301. The third welding part has a third welding head (not shown), and the third welding head is opposite to the second welding head 142. When the second pressing head 142 is driven downward by the fourth driving assembly 141 , the second pressing head 142 presses the edging sheet 308 and the main body 301 respectively and abuts against the third welding head, so that the edging sheet 308 is welded to both sides of the main body 301 .

[0095] Specifically, the hemming sheet delivery unit 139 can be set with reference to the sheet delivery unit 101. In addition, in order to make the hemming sheet 308 wrap the two sides of the main body 301 where the ear wires 302 are welded, the hemming sheet metal parts 143 can be set on both sides of the main body 301 where the ear wires 302 are welded.

[0096] Specifically, the second pressing portion 140 is configured roughly with reference to the first pressing portion 204. The difference is that the fourth driving assembly 141 can simultaneously drive the plurality of second pressing heads 142 to move in the up and down directions through a connecting rod mechanism.

[0097] Specifically, the third welding portion can be set with reference to the second welding portion 205, which will not be described in detail here.

[0098] [Unloading section 144]

[0099] Continue to refer to Fig.16 , Figure 1 In addition, it can also include a blanking portion 144, which is, for example, arranged in front of the edge welding portion 138 and connected to the front end of the belt line serving as the conveying portion 108.

[0100] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. Mask production line, including: The mask comprises a main body and ear wires, wherein the ear wires are welded to both sides of the main body, the main body comprises a laminated outer sheet, an intermediate sheet and an inner sheet, a nose bridge strip is arranged in the main body, and the nose bridge strip is wrapped by the outer sheet and the inner sheet, and is characterized in that the mask production line comprises: A sheet feeding section, used for continuously feeding out the outer layer sheet, the middle sheet and the inner layer sheet and stacking them; A nose bridge strip delivery portion, used for continuously delivering the nose bridge strip; A shaping section, arranged in front of the sheet delivery section, for folding the stacked outer sheet, the middle sheet and the inner sheet; A nose bridge strip cutting section is arranged in front of the shaping section, so that the nose bridge strip is fed to one side of the outer sheet material and the nose bridge strip is cut; A folding portion is arranged in front of the nose bridge strip cutting portion, and folds one side edge portion of the inner layer sheet toward one side of the outer layer sheet, so that the nose bridge strip is held between the edge portion folded to one side of the outer layer sheet and the outer layer sheet; A first welding portion, disposed in front of the folding portion, for welding the stacked outer sheet, the middle sheet, and the inner sheet to form the main body; a main body cutting portion, arranged in front of the first welding portion, so that the main body is cut relative to the outer layer sheet, the middle sheet and the inner layer sheet; an ear wire welding portion, disposed in front of the cutting portion of the main body, for welding the ear wire to the main body; and A transporting portion, at least connected to the main body cutting portion and the ear wire welding portion, for transporting the main body; The ear wire welding part comprises: a first mounting seat; The ear wire holding part comprises a first driving component and two ear wire holding components, wherein the first driving component is mounted on the first mounting seat, the ear wire is held in the ear wire holding component, and the first driving component drives the ear wire holding component to approach the main body or to move away from the main body; A first pressing part, comprising a second driving assembly and a plurality of first pressing heads, wherein the second driving assembly is independent of the first driving assembly and is mounted on the first mounting seat, the first pressing heads and the second driving assembly are connected and respectively located on both sides of the main body, and the second driving assembly drives the first pressing heads to approach the main body or to move away from the main body; A second welding portion having a second welding head, wherein the second welding head is opposite to the first pressing head; When the first pressing head is driven downward by the second driving assembly, the first pressing head presses the ear wire and the main body respectively and abuts against the second welding head, so that the ear wire is welded to both sides of the main body; The first driving assembly includes a first actuator, a first linear guide for guiding the first actuator, and a second mounting seat, the second mounting seat is floatingly connected to the first actuator, and the second mounting seat can slide along the first linear guide, and the ear wire holding assembly is rotatably mounted to the second mounting seat; The second driving assembly includes a second actuator, a second linear guide for guiding the second actuator, and a first ram mounting plate, wherein the second linear guide is connected to the first ram mounting plate, and the first ram mounting plate is connected to the driving end of the second actuator; The first linear guide of the first driving assembly is mounted to the first ram mounting plate, and the first rams are respectively mounted to axial distal ends of the first linear guide.

2. The mask production line according to claim 1, characterized in that: A turning portion is provided between the main body cutting portion and the ear wire welding portion, and the turning portion turns the main body.

3. The mask production line according to claim 1, characterized in that: The utility model also comprises an ear wire feeding part, which is used for continuously feeding the ear wire toward the ear wire welding part.

4. The mask production line according to claim 3, characterized in that: An ear wire shaking portion is provided between the ear wire delivery portion and the ear wire welding portion. The ear wire is delivered to the ear wire welding portion via the ear wire shaking portion and is shaken by the ear wire shaking portion during the delivery process.

5. The mask production line according to claim 1, characterized in that: Each of the ear wire holding components comprises: A retaining seat, the ear wire being attached to the outer periphery of the retaining seat; The two clamping members are respectively mounted on the holding base and can be opened or closed relative to the holding base. In the closed state, the ear wire is clamped and held on the holding base, and in the open state, the ear wire is released.

6. The mask production line according to claim 5, characterized in that: The first clamping portion also includes a closing drive member, which is installed on the second driving assembly. When driven downward by the second driving assembly, the closing drive member presses the clamping member to close the clamping member relative to the retaining seat.

7. The mask production line according to claim 5, characterized in that: It also includes a line-off portion, the line-off portion having a third driving assembly and a line-off member, the line-off member is connected to the third driving assembly and is driven by the third driving assembly in an up-down direction; When driven downward by the third driving assembly, the wire stripping member causes the ear wire to fall off the retaining seat.

8. The mask production line according to claim 1, characterized in that: A rim welding portion is provided in front of the ear wire welding portion, and the rim welding portion includes: The edge sheet material delivery part continuously delivers the edge sheet material toward the main body, and makes the edge sheet material wrap the two sides of the main body to which the ear wires are welded; A second pressing portion, comprising a fourth driving assembly and a plurality of second pressing heads, wherein the second pressing heads are connected to the fourth driving assembly and are respectively located at two sides of the main body, and the fourth driving assembly drives the second pressing heads to approach the main body or to move away from the main body; A third welding part, comprising a third welding head, wherein the third welding head is opposite to the second pressing head; When the second pressing head is driven downward by the fourth driving assembly, the second pressing head presses the edge-wrapped sheet and the main body respectively and abuts against the third welding head, so that the edge-wrapped sheet is welded to both sides of the main body.

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