CN212603451U - Wire feeding mechanism and mask processing and forming device - Google Patents

Abstract

The utility model relates to a send line mechanism and gauze mask machine-shaping device, include: a machine platform; the bobbin is arranged on the machine table; the wire hanging frame is arranged on the machine table and is positioned on the downstream side of the wire barrel; the wire tensioning frame is arranged on the machine table and is positioned on the downstream side of the wire hanging frame; the lug wire raw material paid out by the wire reel is tensioned on the wire tensioning frame after passing through the wire hanging frame and is finally clamped and fixed by the wire clamping and transferring mechanism. Compare in traditional manual ear line mode of operation that advances, the degree of automation of the mechanism that send of this application is high, can effectively alleviate workman intensity of labour, improves production machining efficiency, does benefit to simultaneously and eliminates manual error, guarantees gauze mask shaping quality.

Description

Wire feeding mechanism and mask processing and forming device

Technical Field

The utility model relates to a protective articles technical field especially relates to a send line mechanism and gauze mask machine-shaping device.

Background

Since 2020, with the devastation of new crown epidemic situations, huge disasters are brought to people all over the world, which not only causes economic decline, but also takes away precious lives of many people. Various protective articles play a vital role in battle in the field because of resisting the invasion of new coronavirus to people, and the most common mask is used. The mask is usually worn on the face of a person to cover the mouth and nose to prevent diseases caused by inhalation of saliva or the like containing viruses during breathing. Generally, a mask is mainly composed of a mask body and two ear straps, and the ear straps are divided into left and right ear straps and fixed on the mask body through a fusion welding process.

However, in the existing production mode, the mask body and the ear belt are still positioned by manual work, namely, the left side and the right side of the mask body are moved and compressed by manually pulling the ear line raw materials, so that the labor intensity is high, the labor cost is high, the working efficiency is greatly reduced after long-time work, and the mask forming quality is influenced due to the fact that errors exist in manual operation.

SUMMERY OF THE UTILITY MODEL

Therefore, a mask processing and forming device is needed to be provided, and the problems of high labor intensity, low production efficiency and poor forming quality in the prior art are solved.

The application provides a send line mechanism, send line mechanism includes:

a machine platform;

the bobbin is arranged on the machine table;

the wire hanging frame is arranged on the machine table and is positioned on the downstream side of the wire barrel; and

the wire tensioning frame is arranged on the machine table and is positioned on the downstream side of the wire hanging frame; the lug wire raw material paid out by the wire reel is tensioned on the wire tensioning frame after passing through the wire hanging frame and is finally clamped and fixed by the wire clamping and transferring mechanism.

The wire feeding mechanism is applied to be equipped in the mask processing and forming device and mainly used for feeding ear wire raw materials to the processing station, so that the ear wire raw materials can be matched with a mask body entering the processing station at the same time and are assembled and connected to form a mask finished product. Specifically, the wire barrel, the wire tensioning frame and the wire hanging frame are respectively installed on the machine table and are fixedly supported by the machine table. During production, the thread cylinder is used for winding and releasing the wound ear thread raw material to a processing station, and the ear thread raw material is conveyed stably through the thread hanging frame; and then, the lug wire raw material is clamped and fixed by the wire clamping and transferring mechanism after further passing through the wire tensioning frame, and the wire tensioning frame can ensure the tensioning of the lug wire raw material, so that the length of the lug wire raw material fed into the processing station can be ensured to be accurate. Compared with the traditional manual ear line feeding operation mode, the automatic line feeding mechanism is high in automation degree, labor intensity of workers can be effectively reduced, production and processing efficiency is improved, manual errors can be eliminated, and mask forming quality is guaranteed.

The technical solution of the present application is further described below:

in one embodiment, the thread hanging frame comprises a vertical column and a thread hanging plate arranged on the vertical column, the thread hanging plate is provided with a thread passing hole, and the ear thread raw material wound by the thread drum passes through the thread passing hole.

In one embodiment, the thread tension frame comprises a tension column, a slide block slidably disposed on the tension column, and a tension wheel mounted on the slide block, and the lug thread raw material passing through the thread passing hole is wound under the tension wheel and then clamped and fixed by the thread clamping and transferring mechanism.

In one embodiment, the thread feeding mechanism further comprises a thread positioning frame, the thread positioning frame is arranged on the machine table and located between the thread tensioning frame and the processing station, and the thread positioning frame is used for positioning and fixing the thread head part of the tensioned lug thread raw material.

In one embodiment, the wire positioning frame comprises a positioning seat, a first driving part arranged on the positioning seat and used for outputting telescopic power, and a positioning pressing block connected with the first driving part and capable of being close to or far away from the positioning seat.

In one embodiment, the positioning seat is provided with a first positioning groove, the first positioning groove is arranged facing the positioning pressing block, and/or the positioning pressing block is provided with a second positioning groove, the second positioning groove is arranged facing the positioning seat, and the ear line raw material passes through the first positioning groove and/or the second positioning groove.

In one embodiment, the wire clamping and transferring mechanism comprises a first wire taking clamping jaw, a second wire taking clamping jaw, a third driving piece, a transferring seat, a fourth driving piece, a first transferring clamping jaw and a second transferring clamping jaw, wherein the first wire taking clamping jaw, the transferring seat and the third driving piece are all arranged on the machine platform, the second wire taking clamping jaw is connected with the third driving piece and can be close to or far away from the first wire taking clamping jaw, the fourth driving piece is arranged on the transferring seat, and the first transferring clamping jaw and the second transferring clamping jaw are both connected with the fourth driving piece and can rotate; the first wire taking clamping jaw and the second wire taking clamping jaw are used for obtaining the lug wire section after the slitting mechanism acts, the first transfer clamping jaw and the second transfer clamping jaw are used for transferring the lug wire section into the machining station, and the first transfer clamping jaw and the second transfer clamping jaw can successively or synchronously rotate.

In one embodiment, the turning radii of the first transfer jaw and the second transfer jaw are not equal.

In one of them embodiment, first transfer clamping jaw with the second transfer clamping jaw all includes first arm lock and second arm lock, form the centre gripping chamber between first arm lock and the second arm lock, just first arm lock with the second arm lock is located the lateral wall in centre gripping chamber all is formed with dodges the inclined plane, just the incline direction of dodging the inclined plane is from top to bottom and towards centre gripping chamber direction.

In addition, this application still provides a mask machine-shaping device, and it includes as above-mentioned wire feeding mechanism.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural view of a mask processing and forming device according to an embodiment of the present invention;

FIG. 2 is a schematic view of a portion A of FIG. 1;

FIG. 3 is a left side view of the structure of FIG. 1;

fig. 4 is a schematic top view of the structure of fig. 1.

Description of reference numerals:

10. a feeding mechanism; 11. a support; 12. a power assembly; 13. a transfer plate; 14. positioning blocks; 141. a conical positioning surface; 20. a wire feeding mechanism; 21. a wire hanging frame; 211. a column; 212. a wire hanging plate; 213. a wire passing hole; 22. a wire tensioning frame; 221. a tension column; 222. a slider; 223. a tension wheel; 23. a wire positioning frame; 30. a processing station; 40. a slitting mechanism; 41. a slitting seat; 42. a second driving member; 43. a slitting knife; 50. a wire clamping and transferring mechanism; 51. a third driving member; 52. a transfer seat; 53. a fourth drive; 54. a first transfer jaw; 55. a second transfer jaw; 60. a welding processing mechanism; 61. a fifth driving member; 62. a sixth driving member; 63. pressing a plate; 64. a welding head; 70. a machine platform; 80. a mask body.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do 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, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

As shown in fig. 1, a mask processing and forming apparatus according to an embodiment of the present application is specifically an automatic mask production machine, which can be used for automatically producing and processing various mask products, such as but not limited to a flat mask, a KN95 mask, an N95 mask, and the like. The automatic forming machine has the advantages of high automation degree, high production efficiency, good processing stability, good forming quality and the like.

With continuing reference to fig. 1 and 3, the mask forming apparatus includes: the machine table 70, the feeding mechanism 10, the wire feeding mechanism 20, the splitting mechanism 40, the wire clamping and transferring mechanism 50 and the welding processing mechanism 60. The machine table 70 is a main bearing body of the whole device and mainly comprises four support legs arranged in a rectangular shape and a cabinet arranged above the support legs, and the cabinet is internally provided with electric control devices such as a controller and a circuit, so that the electric control devices are prevented from being exposed and protected. The top surface of the machine table 70 is provided with an operation panel electrically connected with the controller, so that the operation parameters and the like of the whole device can be set and monitored, and the device can be ensured to run reliably under the visual and controllable conditions.

The feeding mechanism 10 is used for feeding the mask bodies 80 one by one to the processing station 30. Taking the N95 mask as an example, the mask body 80 is a planar structure that is not folded and welded to form a three-dimensional structure, but is cut and pressed. In the subsequent processing, after the left and right ear lines are welded to the left and right sides of the mask body 80, the mask body 80 is folded in half to complete the welding, so that a three-dimensional concave structure is formed, and the finished mask product is obtained.

The wire feeding mechanism 20 is disposed at one side of the feeding mechanism 10 and is used for feeding the lug wire raw material in the direction of the processing station 30. The ear line raw material is a thin rope wound in a material cylinder or arranged in a material box in a winding way, and the thin rope is usually an elastic rope, is convenient to wear and ensures that the wearing is firm.

The slitting mechanism 40 is disposed downstream of the thread feeding mechanism 20 and is configured to slit the ear thread material into ear thread segments. Because the ear wire raw materials are generally a whole continuous long wire, but the length of two ear wires used on each mask is designed, the ear wire raw materials need to be cut into ear wire segments with required length before being welded with the mask body 80, so that the forming quality of the mask finished product is ensured.

The thread clamping and transferring mechanism 50 is arranged at one side of the splitting mechanism 40 and is used for transferring the ear thread segments into the processing station 30; the welding mechanism 60 is disposed at the processing station 30 and is used for welding the ear wire segments and the mask body 80 into a whole.

In summary, the implementation of the technical solution of the present embodiment has the following beneficial effects: the gauze mask machine-shaping device of above-mentioned scheme is used for realizing automatic machine-shaping to the gauze mask to replace the manual work production mode of traditional manpower, reduce intensity of labour and enterprise's recruitment cost, improve gauze mask production efficiency simultaneously, eliminate the error that the human factor leads to, guarantee gauze mask shaping quality. Specifically, the mask body 80 is continuously supplied to the processing station 30 by the supply mechanism 10 during operation, and the mask body 80 is a mask finished product from which the remaining portions of the nose clip and the ear line are removed, that is, a main body part of the mask. Meanwhile, the thread feeding mechanism 20 is synchronously operated and feeds the ear thread raw material to the processing station 30, and when the ear thread raw material moves to the slitting mechanism 40, the slitting mechanism 40 performs a slitting operation on the ear thread raw material, so as to obtain an ear thread segment of a desired length (as can be understood, the ear thread segment is bent and fixed on the mask body 80 to obtain a finished mask product); then the thread clamping and transferring mechanism 50 clamps the cut ear thread segments and transfers the ear thread segments to the processing station 30, at the moment, the mask inner body is also just sent to the processing station 30, the ear thread segments are aligned with the mask body 80, and finally, the welding and processing mechanism 60 acts to automatically weld and fix the ear thread segments on the mask body 80, so that the mask processing and forming can be completed.

With reference to fig. 1 and fig. 4, based on the above embodiments, in some embodiments, the feeding mechanism 10 includes a support 11, a power assembly 12, a conveying assembly and a positioning assembly, the power assembly 12 is disposed on the support 11 and is used for outputting a driving force directed to the processing station 30, the conveying assembly is connected to the power assembly 12 and includes at least two continuous conveying plates 13, the positioning assembly includes one-to-one positioning blocks 14 disposed on the conveying plates 13, and the positioning blocks 14 are provided with tapered positioning surfaces 141.

The bracket 11 is a bearing base body and is used for bearing and fixing the power assembly 12, the transmission assembly and the positioning assembly. In order to improve the feeding capacity of the mask body 80, the length of the support 11 is generally designed to be longer, and two ends of the support 11 extend out of two opposite side edges of the machine table 70, so that a plurality of mask bodies 80 can be placed on the conveying assembly at the same time, and the continuous processing capacity is ensured. The power assembly 12 may be, but is not limited to, a motor-synchronous pulley mechanism capable of outputting continuous and stable rotational power. The conveying assembly can be a chain plate mechanism, a synchronous belt mechanism and the like, and preferably the conveying assembly is a chain plate mechanism which has certain hardness and can support the mask body 80 and keep the mask body 80 flat, so that the deformation of the shape of the mask body 80 is avoided, and the subsequent processing precision is further ensured. That is, the conveying assembly comprises at least two continuous conveying plates 13, and particularly, two adjacent conveying plates 13 are rotatably connected by a pin shaft so as to be capable of rotating in a circle shape and frequently entering and exiting the processing station 30, thereby realizing continuous participation in work.

Because the positioning block 14 is arranged on the conveying plate 13, after the mask body 80 is placed on the conveying plate 13, the conical notch of the mask body 80 is just clamped with the conical positioning surface 141, and can be limited in multiple directions by the conical positioning surface 141, so that the light mask body 80 is prevented from easily slipping off from the conveying plate 13.

Further, on the basis of the above embodiment, the positioning assembly further comprises a vacuum chuck, and the vacuum chuck is telescopically arranged on the conveying plate 13 in a lifting manner. The number of the vacuum suction cups can be one, two or more, and the vacuum suction cups are set according to actual needs. Vacuum chuck can adsorb fixedly to placing the gauze mask body 80 on conveying board 13, further restricts gauze mask body 80's degree of freedom, guarantees that gauze mask body 80 conveys reliable and stable.

It can be understood that vacuum chuck passes through the tube coupling with vacuum generating device, before ear line section and gauze mask body 80 welded fastening, vacuum generating device continued work, guarantees that vacuum chuck effectively adsorbs fixedly to gauze mask body 80. However, after the processing is finished, the controller controls the vacuum generating device to stop, so that the processed mask finished product can be fed and discharged from the production line.

And it can be understood that the mask body 80 on the conveying assembly can be manually placed one by one for feeding or can be automatically fed by a mechanical device. Preferably, in some embodiments, the feeding mechanism 10 further comprises a feeding assembly, the feeding assembly comprises a material frame, a driving member and a sending roller, the material frame is disposed on the support 11, and the material frame is used for storing a plurality of mask bodies 80 stacked in layers. In particular, the height of the material frame may be designed to have various values in consideration of the production amount, the production period, etc., so that various numbers of mask bodies 80 can be stored.

In addition, the material frame is close to the lateral wall of conveying subassembly has seted up the discharge gate, and the discharge gate is in the bottom of material frame and sets up towards processing station 30 for a gauze mask body 80 that is in the bottom layer in the material frame is just relative with the discharge gate level. The inner wall of the material frame is obliquely arranged, so that any two adjacent mask bodies 80 stored in the material frame in the height direction are arranged in a staggered manner in the horizontal direction. The staggered arrangement specifically means that, in any two adjacent mask bodies 80, one side of the mask body 80 located below, which is close to the processing station 30, exceeds one side of the mask body 80 located above, which is close to the processing station 30.

The driving piece is arranged on the material frame, and the sending roller is arranged at the discharge port and connected with the driving piece. Thus, when the driving piece drives the sending roller to rotate, the mask body 80 at the lowest layer in the material frame can be rolled and sent out and enters the conveying plate 13 on the conveying assembly, and automatic feeding is realized. And because each two adjacent gauze mask bodies 80 in the material frame are arranged in a staggered manner in the horizontal direction, only the gauze mask body 80 at the lowermost layer can be ensured to contact with the delivery roller at each time, and the influence on subsequent normal welding lug processing caused by the delivery of two or more gauze mask bodies 80 to one delivery plate 13 at a time is avoided.

In addition to the above embodiments, further, the outer cylinder wall of the sending-out drum is provided with a plurality of friction-increasing protrusions, and the friction-increasing protrusions are distributed and arranged. The arrangement of the friction increasing protrusion can increase the contact friction force between the delivery roller and the mask body 80, and ensure that the delivery roller drives the mask body 80 to move quickly and reliably. The outer cylinder wall of the delivery roller is provided with a plurality of elastic columns which are distributed in a dispersed manner, and the friction increasing bulges are arranged on the elastic columns in a one-to-one correspondence manner. Further, consider the size difference of different grade type gauze masks, perhaps factors such as manufacturing dimension error, certain difference can exist to the thickness of different gauze mask bodies 80, when avoiding gauze mask body 80 thickness too little, send out that the cylinder can't contact gauze mask body 80 and can't produce the friction drive power, the application scope of cylinder can be sent out in the elastic column alright promotion that sets up, the length of elastic column can compensate the defect that the thickness of gauze mask body 80 is little promptly, and even when gauze mask body 80's thickness is when great, the elastic column can be stressed and contract by oneself, avoid taking place the interference problem.

Alternatively, as an alternative to the above embodiments, in other embodiments, the feeding assembly further comprises a non-slip mat wrapped around the outer cylindrical wall of the delivery drum. The non-slip mat can also increase the contact friction with the mask body 80, so that the delivery roller can reliably drive the mask body 80 to move into the conveying plate 13.

With continued reference to fig. 1 and 4, in some embodiments, the thread feeding mechanism 20 includes a thread reel, a thread hanging rack 21 and a thread tensioning rack 22, all of which are disposed on the machine table 70, and the ear thread material paid out from the thread reel is threaded by the thread hanging rack 21, tensioned on the thread tensioning rack 22, and finally clamped and fixed by the thread clamping and transferring mechanism 50. The bobbin is wound with lug wire raw materials with enough length, so that the continuous processing capacity of the device in a period can be ensured. The ear wire raw material sent out by the wire barrel passes through the wire hanging frame 21 and can be limited and fixed by the wire hanging frame 21, so that the reliable transmission is ensured. The wire tensioning frame 22 can further tension and straighten the lug wire raw material, and ensures that the lug wire section length obtained by subsequent cutting has high precision. Finally, the cut clip transfer mechanism 50 clips the ear wire segment, and can send it to the processing station 30, and finally is welded with the mask body 80 entering the processing station 30 into a whole.

Specifically, in some embodiments based on the above embodiments, the thread hanging frame 21 includes a vertical column 211 and a thread hanging plate 212 disposed on the vertical column 211, the thread hanging plate 212 is opened with a thread passing hole 213, and the ear thread raw material wound from the bobbin is passed through the thread passing hole 213. The wire hanging plate 212 is of an L-shaped structure, and the tail end of the transverse plate far away from the machine table 70 is provided with a wire passing hole 213, so that the lug wire raw material is limited by the hole wall when passing through, and the lug wire raw material is prevented from being swung too much in the air to easily hang other peripheral components, and the normal transmission of the lug wire raw material is prevented from being influenced.

The thread tension frame 22 includes a tension column 221, a slider 222 slidably mounted on the tension column 221, and a tension pulley 223 attached to the slider 222, and the lug wire material passed through the thread passage hole 213 is wound around the tension pulley 223 and then held and fixed by the thread tension transfer mechanism 50. The tension column 221 is vertically fixed on the top surface of the machine table 70, and guides and limits the up-and-down sliding of the slider 222. The lug wire raw material passed through the wire passing hole 213 is bypassed below the wheel groove of the tension wheel 223, so that the slide block 222 and the tension wheel 223 have a downward sliding trend under the self weight, and the lug wire raw material can be compressed (tensioned), thereby being beneficial to ensuring the length precision of the lug wire section obtained by subsequent cutting. The wire tensioning frame 22 is simple in structure and working principle and high in reliability.

With reference to fig. 1, in some embodiments, the thread feeding mechanism 20 further includes a thread positioning frame 23, the thread positioning frame 23 is disposed on the machine table 70 and located between the thread tensioning frame 22 and the processing station 30, and the thread positioning frame 23 is used for positioning and fixing the thread end of the tensioned ear thread raw material. The positioning frame is used for cooperating with the wire clamping and transferring mechanism 50 and the splitting mechanism 40 to cut the ear wire sections with the required length.

Specifically, in some embodiments, the wire positioning frame 23 includes a positioning seat, a first driving member disposed on the positioning seat and used for outputting telescopic power, and a positioning pressing block connected to the first driving member and capable of approaching or departing from the positioning seat; the positioning seat is provided with a first positioning groove, the first positioning groove is arranged facing the positioning pressing block, and/or the positioning pressing block is provided with a second positioning groove, the second positioning groove is arranged facing the positioning seat, and the ear wire raw material penetrates through the first positioning groove and/or the second positioning groove.

When the ear wire segment is cut, the wire end of the wire positioning frame 23 is first clamped by the wire clamping transfer mechanism 50 and pulled outward, and a length of ear wire raw material pulled out after moving a preset stroke is an ear wire segment, and the ear wire segment is a left and right ear wire with a required length welded on the mask body 80. At this time, the slitting mechanism 40 cuts the boundary between the ear line segment and the ear line material by the lower blade to obtain the desired length of the ear line segment. In the process, the first driving piece can drive the positioning pressing block to move to be attached to the positioning seat tightly so as to clamp the ear wire raw material in the first positioning groove and/or the second positioning groove, and after straightening and cutting are prevented, no wire head extends out of the wire positioning frame 23 due to the fact that the ear wire raw material rebounds under the action of self elasticity, and the subsequent wire clamping transfer mechanism 50 cannot clamp the ear wire raw material to complete preparation and processing of the next ear wire section. The first positioning groove and/or the second positioning groove are arranged, so that most of the lug wire raw materials can retract in the first positioning groove and/or the second positioning groove, and the problems of deformation or breakage caused by excessive clamping force due to excessive clamping of the positioning pressing block and the positioning seat are avoided.

With reference to fig. 3, in some embodiments, the slitting mechanism 40 includes a slitting seat 41, a second driving member 42 and a slitting knife 43, the slitting seat 41 is disposed on the positioning seat, the slitting seat 41 has a first guiding inclined plane, the second driving member 42 is disposed on the slitting seat 41, the slitting knife 43 is connected to the second driving member 42, and the slitting knife 43 has a second guiding inclined plane, and the second guiding inclined plane is in sliding fit with the first guiding inclined plane.

The second driving member 42 is electrically connected with the controller, when the ear wire raw material needs to be cut, the second driving member 42 is connected with the controller to drive the cutting knife 43 to cut, and the ear wire raw material can be cut off rapidly due to the fact that the cutting knife 43 is fast in action speed and sharp, and the wire clamping transfer mechanism 50 can obtain the ear wire section. In the cutting process, the first guide inclined plane is in sliding contact with and matched with the second guide inclined plane, so that the rigidity of the cutting knife 43 can be increased, the movement of the cutting knife can be guided, and the length precision of the cut ear line section can be ensured.

Particularly, on the basis of the above embodiment, the splitting mechanism 40 further comprises a vibrator, the vibrator is connected with the power shaft of the second driving member 42, and the splitting blade 43 is connected with the vibrator so that the splitting blade 43 can vibrate in a high frequency and a small amplitude, and the vibration direction of the splitting blade 43 is a direction approaching to or departing from the raw ear line material. The vibrator applies the high-frequency micro-amplitude vibration generated by the cutting knife 43, so that the vibration speed of the cutting knife 43 and the feed speed form a composite effect, the cutting knife 43 can generate micro-impact force on the ear wire raw material at the moment, the ear wire raw material can be cut off quickly and cleanly, and the phenomenon that the quality of the ear wire section is influenced due to the fact that the cutting position is sticky is avoided.

With reference to fig. 1 and fig. 2, based on any of the above embodiments, the wire clamping and transferring mechanism 50 includes a first wire-taking clamping jaw, a second wire-taking clamping jaw, a third driving member 51, a transferring base 52, a fourth driving member 53, a first transferring clamping jaw 54 and a second transferring clamping jaw 55, the first wire-taking clamping jaw, the transferring base 52 and the third driving member 51 are all disposed on the machine table 70, the second wire-taking clamping jaw is connected to the third driving member 51 and can be close to or far from the first wire-taking clamping jaw, the fourth driving member 53 is disposed on the transferring base 52, and the first transferring clamping jaw 54 and the second transferring clamping jaw 55 are both connected to the fourth driving member 53 and can rotate; the first and second wire-taking jaws are configured to take the ear wire sections after actuation of the slitting mechanism 40, and the first and second transfer jaws 54, 55 are configured to transfer the ear wire sections into the processing station 30.

When the device works, the third driving piece 51 firstly drives the second wire taking clamping jaw to move close to the first wire taking clamping jaw and clamp the wire end of the lug wire raw material, and then the third driving piece 51 quickly drives the second wire taking clamping jaw to return and reset; the first thread take-off jaw then grips the portion of the thread stock adjacent to the thread positioning frame 23 (the first thread take-off jaw is stationary), and the second thread take-off jaw grips the portion of the thread having the designed length from the first thread take-off jaw. Then, the cutting knife 43 rapidly falls to cut off the ear wire material, and the first wire-taking clamping jaw and the second wire-taking clamping jaw clamp the separated ear wire section. Next, the fourth driver 53 operates to drive the first transfer gripper 54 and the second transfer gripper 55 to simultaneously grip both ends of the ear line segment, and the first wire-taking gripper and the second curved gripper are released. The fourth driver 53 then drives the first transfer jaw 54 and the second transfer jaw 55 to rotate and approach each other, so as to move the two ends of the ear wire segment to the position above the mask body 80 that has entered the processing station 30, and at this time, the two ends of the ear wire segment are aligned with the designed welding position on the mask body 80. Thus, the welding mechanism 60 can weld and fix the ear line segments on both sides of the mask body 80.

It should be noted that the first transfer jaw 54 and the second transfer jaw 55 may rotate sequentially or simultaneously. The specific setting can be according to actual need.

It should be noted that, in order to be able to adapt to the feature that the ear lines in the KN95 or N95 mask are irregularly arranged (i.e. the connecting line of the two ends of the ear line segment connected to the mask body 80 forms an included angle with the central line of the mask body 80), in some embodiments, the rotation radii of the first transfer jaw 54 and the second transfer jaw 55 are not equal. For example, the length of the first transfer jaw 54 is greater than the length of the second transfer jaw 55 such that the radius of rotation of the first transfer jaw 54 is greater than the radius of rotation of the second transfer jaw 55. The first transfer clamping jaw 54 with the larger rotating radius can transfer one end of the ear line segment to the position, close to the bottom, of the mask body 80, and the second transfer clamping jaw 55 with the smaller rotating radius transfers the other end of the ear line segment to the position, close to the side, of the mask body 80, so that the requirements of ear line positioning and welding positions are met.

Specifically, in some embodiments, the first transfer jaw 54 and the second transfer jaw 55 each include a first clamp arm and a second clamp arm that form a clamp cavity therebetween. First arm lock and second arm lock are connected with the cylinder and can be close to each other or keep away from, and when first arm lock and second arm lock were close to, the centre gripping chamber dwindled and can be lived the centre gripping of ear line section. Just first arm lock with the second arm lock is located the lateral wall in centre gripping chamber all is formed with dodges the inclined plane, just the incline direction of dodging the inclined plane is from top to bottom and orientation centre gripping chamber direction. Adopt and dodge the inclined plane design, aim at welding process mechanism 60 is to ear line section and gauze mask body 80 welded fastening back, and first transfer clamping jaw 54 and second transfer clamping jaw 55 are given up a processing station 30 of giving up easily, and avoid appearing the hanging wire problem at the in-process that gives up, prevent to hang up the ear line section or draw the gauze mask from producing the line and draw and drop.

Further, in some embodiments, the bottom portions of the first clamping arm and the second clamping arm are formed with concave clearance recesses. Due to the arrangement of the clearance concave part, the first transfer clamping jaw 54 and the second transfer clamping jaw 55 can be prevented from colliding with the transmission assembly when rotating to the mask body 80.

With reference to fig. 3, in addition, on the basis of any of the above embodiments, the welding mechanism 60 includes a fifth driving element 61, a sixth driving element 62, a pressing plate 63 and a welding head 64, the fifth driving element 61 and the sixth driving element 62 are both disposed on the transfer base 52, the pressing plate 63 is connected to the fifth driving element 61 and is used for pressing or releasing the mask body 80, and the welding head 64 is connected to the sixth driving element 62 and is capable of welding and fixing the ear line segment to the mask body 80. After the mask body 80 and the ear line segment enter the processing station 30, the fifth driving member 61 firstly pushes the pressing plate 63 to fall down to press and fix the mask body 80 and the two ends of the ear line segment, so that the alignment precision is ensured. And then the sixth driving piece 62 drives the welding head 64 to fall down, and the two ends of the ear line segments are welded and fixed on the mask body 80, so that the wire welding is completed to obtain the mask finished product.

The first to sixth drivers 62 may be selected from driving devices capable of outputting linear power, such as an air cylinder and a linear motor.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. A wire feeding mechanism, characterized in that the wire feeding mechanism comprises:

a machine platform;

the bobbin is arranged on the machine table;

the wire hanging frame is arranged on the machine table and is positioned on the downstream side of the wire barrel; and

the wire tensioning frame is arranged on the machine table and is positioned on the downstream side of the wire hanging frame; the lug wire raw material paid out by the wire reel is tensioned on the wire tensioning frame after passing through the wire hanging frame and is finally clamped and fixed by the wire clamping and transferring mechanism.

2. The thread feeding mechanism as claimed in claim 1, wherein the thread hanging bracket comprises a vertical post and a thread hanging plate disposed on the vertical post, the thread hanging plate is provided with a thread passing hole, and the lug thread material paid out from the thread drum is passed through the thread passing hole.

3. The thread feeding mechanism according to claim 2, wherein the thread tension frame comprises a tension column, a slider slidably mounted on the tension column, and a tension wheel mounted on the slider, and the thread guiding hole passes through the lug wire material and is wound around the tension wheel and then clamped and fixed by the thread clamping and transferring mechanism.

4. The wire feeding mechanism according to claim 1, further comprising a wire positioning frame, wherein the wire positioning frame is arranged on the machine table and located between the wire tensioning frame and the processing station, and the wire positioning frame is used for positioning and fixing the tensioned wire head part of the lug wire raw material.

5. The wire feeding mechanism of claim 4, wherein the wire positioning frame comprises a positioning seat, a first driving member disposed on the positioning seat and used for outputting telescopic power, and a positioning pressing block connected to the first driving member and capable of approaching or departing from the positioning seat.

6. The wire feeding mechanism according to claim 5, wherein the positioning seat is provided with a first positioning groove disposed facing the positioning press block, and/or the positioning press block is provided with a second positioning groove disposed facing the positioning seat, and the lug wire material passes through the first positioning groove and/or the second positioning groove.

7. The wire feeding mechanism according to claim 1, wherein the wire clamping and transferring mechanism comprises a first wire taking clamping jaw, a second wire taking clamping jaw, a third driving piece, a transferring seat, a fourth driving piece, a first transferring clamping jaw and a second transferring clamping jaw, the first wire taking clamping jaw, the transferring seat and the third driving piece are all arranged on the machine table, the second wire taking clamping jaw is connected with the third driving piece and can be close to or far away from the first wire taking clamping jaw, the fourth driving piece is arranged on the transferring seat, and the first transferring clamping jaw and the second transferring clamping jaw are both connected with the fourth driving piece and can rotate; the first wire taking clamping jaw and the second wire taking clamping jaw are used for obtaining an ear wire section after the slitting mechanism acts, the first transfer clamping jaw and the second transfer clamping jaw are used for transferring the ear wire section to a machining station, and the first transfer clamping jaw and the second transfer clamping jaw can successively or synchronously rotate.

8. The wire feed mechanism of claim 7, wherein the radii of rotation of the first transfer jaw and the second transfer jaw are not equal.

9. The wire feeding mechanism according to claim 8, wherein the first transferring clamping jaw and the second transferring clamping jaw each comprise a first clamping arm and a second clamping arm, a clamping cavity is formed between the first clamping arm and the second clamping arm, an avoiding inclined surface is formed on a side wall of the clamping cavity of the first clamping arm and the second clamping arm, and an inclined direction of the avoiding inclined surface is from top to bottom and faces the clamping cavity.

10. A mask forming apparatus comprising the wire feeding mechanism according to any one of claims 1 to 9.

Images