CN213830367U - Mask welding earphone with cam mechanism - Google Patents

Abstract

The utility model relates to a gauze mask production facility technical field, in particular to gauze mask welds earphone with cam mechanism. It comprises a frame; the ear wire conveying device is arranged on the rack and used for conveying ear wires to the welding point; the ear wire spot welding device is used for welding the ear wires conveyed by the ear wire conveying device; and the cam link mechanism is connected with the lug wire spot welding device and is used for controlling the lug wire spot welding device to move in the vertical direction. The utility model provides a gauze mask welds earphone adopts cam link mechanism to control ear line spot welding device at the ascending motion of vertical side, and its action is accurate reliable, simple structure is compact, and transmission efficiency is high, and the accuracy is high. In order to enable all processing procedures of welding the earphones to be better matched, the transmission of the clamping mechanism is also arranged on the same transmission shaft, and the cam mechanism is still adopted to control the movement of the clamping mechanism, so that the mechanism has good relevance and compact processing rhythm, the gap waiting time of all links is reduced, and the production efficiency of the mask is greatly improved.

Description

Mask welding earphone with cam mechanism

Technical Field

The utility model relates to a gauze mask production facility technical field, in particular to gauze mask welds earphone with cam mechanism.

Background

The mask is a sanitary article, generally worn at the mouth and nose for filtering air entering the mouth and nose to prevent harmful gas, smell, spray, virus and other substances, and is also one of the methods for preventing respiratory infectious diseases. The two ends of the ear belt are welded with the ear belts, and the two ends of each ear belt are respectively welded with the upper end and the lower end of the mask main body. When the ear belt is welded, the existing mask machine can only weld one side of the ear belt in a manual operation mode, then an operator turns over the mask head and then welds the other side of the ear belt, and therefore the existing manual operation mode has very low production efficiency.

Patent No. CN111251618A patent name "an ear area welding set for gauze mask production", its open date is 2020 year 06 month 09 days, discloses an ear area welding set for gauze mask production, including base, slip guiding mechanism and positioning mechanism, the ear area book is installed to the top both sides of base, and the middle part that the ear area was rolled up is provided with unreeling the axle, the outside of ear area book is provided with the ear area strip, and the ear area strip is close to one side of base central line and installs ear area feed mechanism, the support column is installed at the top both ends of base, and the top of support column is fixed with the roof, the cylinder is installed to the middle part below of roof, and the below of cylinder is fixed with the lifter plate, the below both sides of lifter plate are installed and are linked up the piece, and the below that links up the piece is fixed with the soldered connection head.

Above-mentioned patent can effectively solve the problem that manual operation production efficiency is low, and the device is convenient for drive the lift of lifter plate through the setting to the cylinder to be convenient for control soldered connection's lift, soldered connection and cutting off tool cooperation are used and can carry out the hot welding butt fusion to the gauze mask when carrying out accurate cutting off to the middle part of auricle strip. However, the defects that the cylinder is adopted to drive the lifting are that the precision of the cylinder is low, the stroke time is long, the speed is low, the transmission efficiency is low, a plurality of control systems are complex, and the noise is high.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems of long stroke time and low speed of the welding lifting mechanism of the mask welding earphone driven by the air cylinder in the prior art, the utility model provides a mask welding earphone with a cam mechanism, which comprises a frame; the ear wire conveying device is arranged on the rack and used for conveying ear wires to the welding point; the ear wire spot welding device is used for welding the ear wires conveyed by the ear wire conveying device; and the cam link mechanism is connected with the lug wire spot welding device and is used for controlling the lug wire spot welding device to move in the vertical direction.

On the basis of the technical scheme, further, the ear wire conveying device comprises a wire pulling mechanism for pulling the ear wire, a distance limiting mechanism for limiting the pulling distance of the ear wire, a wire shearing mechanism for shearing the ear wire after distance limiting, and a clamping mechanism for clamping the ear wire and placing two ends of the ear wire at the welding position after the ear wire is sheared.

On the basis of the technical scheme, the wire pulling mechanism further comprises a wire guiding device fixed on the rack and a driving device used for providing power for the wire guiding device; the lead device is used for transmitting the ear wire to the distance mechanism.

On the basis of the technical scheme, further, the distance mechanism comprises a guide rail device arranged at the bottom of the rack, a wire guide wheel arranged above the guide rail device and an air claw structure arranged on the guide rail device, and the air claw structure is used for grabbing the ear wire and moving the ear wire to the wire cutting position.

On the basis of the technical scheme, the thread cutting mechanism further comprises a scissors assembly for cutting threads and an air cylinder for driving the scissors assembly to cut.

On the basis of the technical scheme, the lug line spot welding device further comprises an ultrasonic welding head arranged below the cam link mechanism, and a welding and pressing die matched with the ultrasonic welding head.

On the basis of the technical scheme, further, the cam link mechanism comprises a transmission shaft arranged on the rack, a plurality of first disc-shaped cams arranged on the transmission shaft, and a first driven piece used for connecting the ear line spot welding device and the first disc-shaped cams.

On the basis of the technical scheme, further, the cam link mechanism is further provided with a second disc cam for driving the clamping mechanism to move in the vertical direction and a second driven piece for connecting the clamping mechanism and the second disc cam.

On the basis of the technical scheme, further, a cylindrical cam is arranged on the cam-link mechanism, and the clamping mechanism enables the lug wire to rotate to the welding position from the distance-fixing mechanism through the cylindrical cam.

On the basis of the technical scheme, further, the cam link mechanism further comprises an elastic structure which is arranged on the rack and used for assisting in driving the cam link mechanism to ascend through a spring.

The utility model provides a pair of earphone is welded to gauze mask with cam mechanism compares with prior art, has following advantage: the cam-link mechanism is adopted to control the movement of the ear line spot welding device in the vertical direction, the movement is accurate and reliable, the structure is simple and compact, the transmission efficiency is high, the precision is high, the production efficiency is improved, and the mass production of products is facilitated.

In order to enable all processing procedures of the welding earphone to be better matched, the transmission of the clamping mechanism is also arranged on the same transmission shaft, and the cam mechanism is still adopted to control the movement of the clamping mechanism, so that the mechanism has good relevance, all processing actions are mutually linked during welding, the processing rhythm is compact, the gap waiting time of all links is reduced, and the production efficiency of the mask is greatly improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

Fig. 1 is a schematic perspective view of a mask welding earphone with a cam mechanism according to the present invention;

fig. 2 is another schematic perspective view of a mask welding earphone with a cam mechanism according to the present invention;

fig. 3 is a front view of the mask welding earphone with cam mechanism provided by the utility model.

Reference numerals:

300 ear wire spot welding device of 100-frame 200 ear wire conveying device

400 cam linkage 210 wire-drawing mechanism 220 distance-fixing mechanism

230 wire cutting mechanism 240 clamping mechanism 211 wire guiding device

212 drive unit 221 guide rail device 222 guide wheel

223 air claw structure 231 scissors assembly 232 air cylinder

310 ultrasonic welding head 320 welding pressing mould 411 transmission shaft

412 a first disc cam 413 a first follower 414 a second disc cam

415 second follower 416 cylindrical cam 417 spring structure

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", 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 simplification of the description, but 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 thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The utility model provides a pair of earphone is welded to gauze mask with cam mechanism, include: a frame 100; an ear wire conveying device 200 arranged on the frame 100 and used for conveying ear wires to a welding point; an ear wire spot welding device 300 for welding the ear wire conveyed by the ear wire conveying device 200; a cam link mechanism 400 connected to the ear wire spot welding apparatus 300 and controlling the ear wire spot welding apparatus 300 to move in a vertical direction.

In particular, as shown in fig. 1-3, the mask welding machine includes a frame 100; an ear wire conveying device 200 arranged on the frame 100 and used for conveying ear wires to a welding point; an ear wire spot welding device 300 for welding the ear wire conveyed by the ear wire conveying device 200; a cam link mechanism 400 connected to the ear wire spot welding apparatus 300 and controlling the ear wire spot welding apparatus 300 to move in a vertical direction. After the welding position is arrived at the ear wire, will drive ear wire spot welding device 300 through cam link mechanism 400 and weld the welding position, of course, this equipment still includes gauze mask conveyor, for example set up the tray that can install single gauze mask on the conveyer belt, weld the ear to individual gauze mask through the drive of conveyer belt to realize automaticly, all belong to the prior art category that technical staff in the field can understand, no longer describe herein.

The utility model provides a pair of gauze mask welds earphone with cam mechanism adopts cam linkage to control the ascending motion of ear line spot welding device 300 in vertical side, and its action is accurate reliable, and simple structure is compact, and transmission efficiency is high, and the accuracy is high, has improved production efficiency, is favorable to the mass production of product.

Preferably, the ear wire delivering device 200 comprises a wire pulling mechanism 210 for pulling the ear wire, a spacing mechanism 220 for limiting the pulling distance of the ear wire, a wire cutting mechanism 230 for cutting off the ear wire after spacing, and a clamping mechanism 240 for clamping the ear wire and placing the two ends of the ear wire at the welding position after the ear wire is cut off.

In specific implementation, as shown in fig. 2, the ear wire conveying device 200 includes a wire pulling mechanism 210 for pulling the ear wire, the wire pulling mechanism 210 is disposed on the frame 100, and a distance mechanism 220 for limiting the ear wire pulling distance; a thread cutting mechanism 230 for cutting the ear thread after the distance is fixed and a clamping mechanism 240 for clamping the ear thread and placing the two ends of the ear thread at the welding point after the ear thread is cut. The ear wire is conveyed to the distance mechanism 220 from the wire drawing mechanism 210, the distance mechanism 220 draws the ear wire out by a fixed length, the ear wire is cut by the wire cutting mechanism 230, finally, the cut ear wire is conveyed to a welding position by the clamping mechanism 240, and the whole ear wire conveying device 200 moves and operates in sequence.

Preferably, the wire pulling mechanism 210 comprises a wire guiding device 211 fixed on the frame 100 and a driving device 212 for providing power for the wire guiding device 211; the wire guide 211 is used to transport the ear wire to the distance mechanism 220.

In specific implementation, the wire mechanism 210 includes a wire guiding device 211 fixed on the rack 100 and a driving device 212 for providing power for the wire guiding device 211; the wire guide 211 is used to transport the ear wire to the distance mechanism 220. By guiding and clamping the wire guiding device 211, as a preferred scheme, the wire guiding device 211 is provided with a wire guiding rod, a traction wheel, a guide wheel and a tension adjusting device for adjusting the tension of the ear belt wire, so that the tension of the ear wire in the conveying process is ensured to be consistent, and the ear wire supply has consistency and stability.

Preferably, the distance mechanism 220 comprises a guide rail device 221 arranged at the bottom of the machine frame 100, a wire guide wheel 222 arranged above the guide rail device 221, and an air claw structure 223 arranged on the guide rail device 221, wherein the air claw structure 223 is used for grabbing the ear wire and moving the ear wire to the wire cutting position.

In a specific implementation, the distance-fixing mechanism 220 includes a guide rail device 221 disposed at the bottom of the rack 100, and a wire guiding wheel 222 disposed above the guide rail device 221, where the wire guiding wheel 222 is used to fix one end of an ear wire; the mask ear line guiding device further comprises an air claw structure 223 arranged on the guide rail device 221, wherein the air claw structure 223 is used for grabbing an ear line at one end of the wire guiding wheel 222 and moving to a fixed position through the guide rail device 221, and the moving distance is the length of the mask ear line.

Preferably, the thread cutting mechanism 230 includes a scissors assembly 231 for cutting the thread and an air cylinder 232 for driving the scissors assembly 231 to cut the thread.

In specific implementation, the thread trimming mechanism 230 is disposed at one end of the thread guiding wheel 222, and includes a scissors assembly 231 for trimming threads and an air cylinder 232 for driving the scissors assembly 231 to perform trimming. The scissors assembly 231 is composed of two scissors blades hinged to each other in an interlaced manner, and when the distance-fixing mechanism 220 is completed, i.e., the air-claw structure grabs the ear wire at one end of the wire guiding wheel 222 and moves to a fixed position, the air cylinder 232 drives the scissors assembly 231 to cut the wire.

Preferably, the ear wire spot welding device 300 includes an ultrasonic welding head 310 disposed below the cam link mechanism 400, and a welding press mold 320 used in cooperation with the ultrasonic welding head 310.

In specific implementation, as shown in fig. 1, the ear spot welding device 300 includes an ultrasonic welding head 310 disposed below the cam link mechanism 400, and a welding press mold 320 used in cooperation with the ultrasonic welding head 310. When the cam linkage 400 drives and the welding press mold 320 moves downwards, the ear wire and the mask body are pressed tightly, so that the mask cannot fall off in the ear welding process, and the ear wire welding quality is ensured. When the cam linkage 400 drives the ultrasonic welding head 310 to move downward to the welding position, the ear line is spot-welded.

Preferably, the cam link mechanism 400 includes a driving shaft 411 provided on the frame 100, a plurality of first disc cams 412 provided on the driving shaft 411, and a first follower 413 for connecting the ear line spot welding device 300 and the first disc cams 412.

In specific implementation, as shown in fig. 1, because the travel of the ear line spot welding is short, the first follower 413 is driven to move in the vertical direction by the rotation of the first disc cams 412 arranged on the transmission shaft 411, so that the ear line spot welding device 300 and the ultrasonic welding head 310 move up and down in a matched manner, and the spot welding work is completed. Preferably, the transmission shaft 411 is driven by a motor through a belt transmission.

Preferably, the cam linkage 400 is further provided with a second disc cam 414 for driving the clamping mechanism 240 to move in the vertical direction, and a second follower 415 for connecting the clamping mechanism 240 and the second disc cam 414.

In specific implementation, the second disc cam 414 is disposed on the transmission shaft 411, and the rotation of the second disc cam and the transmission shaft drives the second follower 415 to move in the vertical direction, so that the clamping mechanism 240 completes the movement in the vertical direction. Preferably, the first driven member 413 and the second driven member 415 can be flat-bottom driven members, that is, a flat-bottom square structure as shown in fig. 1, and support rods are arranged at two symmetrical sides of the flat-bottom square structure and are used for connecting an actuating mechanism, so that the force and the movement of the actuating mechanism are stable, and the transmission efficiency of the actuating mechanism is ensured.

Preferably, the cam-link mechanism 400 is provided with a cylindrical cam 416, and the clamping mechanism 240 passes through the cylindrical cam 416 to rotate the ear wire from the distance mechanism 220 to the welding position.

In a specific implementation, as shown in fig. 1, the cam-link mechanism 400 is provided with a cylindrical cam 416, and the clamping mechanism 240 rotates the ear wire from the distance mechanism 220 to the welding position through the cylindrical cam 416. The cylindrical cam 416 may be disposed on the transmission shaft 411, and the rotation of the cylindrical cam 416 drives the corresponding follower to move left and right, the follower is connected to the clamping mechanism 240, and the clamping mechanism 240 is connected to the follower, so that the clamping mechanism 240 can swing around the follower, and according to the stroke design of the cylindrical cam 416, the clamping mechanism 240 can select 180 degrees around the follower, thereby achieving the purpose of clamping the ear wire from the distance mechanism 220 to the welding position.

Preferably, the cam linkage 400 further includes an elastic structure 417 disposed on the frame 100 for assisting the cam linkage 400 to ascend through a spring.

In specific implementation, the cam linkage 400 further includes an elastic structure 417 disposed on the frame 100 for assisting the cam linkage 400 to ascend through a spring. The elastic structure 417 can ensure that the first follower 413 and the second follower 415 are always in a tangent state with the outer circumferential surface of the cam, so that the cam transmission is more stable and reliable. Meanwhile, the elastic structure 417 further includes an adjusting device for adjusting the elastic force of the spring, and the elastic force of the spring is adjusted according to actual working requirements.

Although terms such as a frame, an ear wire feeding device, an ear wire spot welding device, a cam link mechanism, a wire pulling mechanism, a distance mechanism, a wire cutting mechanism, a driving device, a gas claw structure, an ultrasonic welding head, a first disk cam, a second follower, a clamping mechanism, a guide rail device, a scissor assembly, a welding and pressing mold, a first follower, a cylindrical cam, a wire device, a wire guide wheel, a gas cylinder, a transmission shaft, a second disk cam, an elastic structure, etc., are used more often herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims (10)

1. The utility model provides an earphone is welded to gauze mask with cam mechanism which characterized in that includes:

a frame (100);

the ear wire conveying device (200) is arranged on the rack (100) and is used for conveying ear wires to the welding point;

an ear wire spot welding device (300) for welding the ear wire conveyed by the ear wire conveying device (200);

and a cam link mechanism (400) connected to the ear wire spot welding device (300) and controlling the ear wire spot welding device (300) to move in a vertical direction.

2. The mask welding earphone with the cam mechanism according to claim 1, wherein: the ear wire conveying device (200) comprises a wire drawing mechanism (210) for drawing the ear wire, a distance mechanism (220) for limiting the traction distance of the ear wire, a wire cutting mechanism (230) for cutting off the ear wire after distance, and a clamping mechanism (240) for clamping the ear wire and placing two ends of the ear wire at welding positions after the ear wire is cut off.

3. The mask welding earphone with the cam mechanism according to claim 2, wherein: the wire drawing mechanism (210) comprises a wire guide device (211) fixed on the frame (100) and a driving device (212) used for providing power for the wire guide device (211); the wire guide (211) is used for transmitting an ear wire to the distance mechanism (220).

4. The mask welding earphone with the cam mechanism according to claim 2, wherein: the distance mechanism (220) comprises a guide rail device (221) arranged at the bottom of the rack (100), a wire guide wheel (222) arranged above the guide rail device (221) and an air claw structure (223) arranged on the guide rail device (221), wherein the air claw structure (223) is used for grabbing the ear wire and moving the ear wire to a wire cutting position.

5. The mask welding earphone with the cam mechanism according to claim 2, wherein: the thread cutting mechanism (230) comprises a scissors assembly (231) for cutting threads and an air cylinder (232) for driving the scissors assembly (231) to cut.

6. The mask welding earphone with the cam mechanism according to claim 1, wherein: the lug line spot welding device (300) comprises an ultrasonic welding head (310) arranged below the cam link mechanism (400) and a welding and pressing die (320) matched with the ultrasonic welding head (310).

7. The mask welding earphone with the cam mechanism according to claim 1, wherein: the cam link mechanism (400) comprises a transmission shaft (411) arranged on the rack (100), a plurality of first disc-shaped cams (412) arranged on the transmission shaft (411), and a first follower (413) used for connecting the ear line spot welding device (300) and the first disc-shaped cams (412).

8. The mask welding earphone with the cam mechanism according to claim 2, wherein: the cam link mechanism (400) is further provided with a second disc cam (414) for driving the clamping mechanism (240) to move in the vertical direction and a second follower (415) for connecting the clamping mechanism (240) and the second disc cam (414).

9. The mask welding earphone with the cam mechanism according to claim 2, wherein: the cam link mechanism (400) is provided with a cylindrical cam (416), and the clamping mechanism (240) enables the ear wire to rotate to the welding position from the distance mechanism (220) through the cylindrical cam (416).

10. The mask welding earphone with the cam mechanism according to claim 1, wherein: the cam link mechanism (400) further comprises an elastic structure (417) which is arranged on the frame (100) and used for assisting in driving the cam link mechanism (400) to ascend through a spring.

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