CN111716751A

CN111716751A - Belt releasing mechanism on mask production line

Info

Publication number: CN111716751A
Application number: CN202010487243.8A
Authority: CN
Inventors: 不公告发明人
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-06-02
Filing date: 2020-06-02
Publication date: 2020-09-29

Abstract

The invention relates to a belt releasing mechanism for releasing an ear belt with a preset length downwards to a mask body to which the ear belt is to be welded on a mask production line. Comprises a bending guide rail, a trolley, a mobile driving mechanism and an ear belt pushing mechanism; the trolley is arranged on the bent guide rail so as to move under the guidance of the bent guide rail, and the movement driving mechanism is arranged for driving the trolley to move; the ear band pushing mechanism is mounted on the trolley and is arranged to eject the ear band. The belt releasing mechanism disclosed by the invention is simple in structure, and the shape of the ear belt is controlled by controlling the moving track of the trolley.

Description

Belt releasing mechanism on mask production line

Technical Field

The invention relates to a belt releasing mechanism for releasing an ear belt with a preset length downwards to a mask body to which the ear belt is to be welded on a mask production line.

Background

The disposable mask is widely applied in various industries due to low price and convenient use. In order to reduce labor cost and improve production efficiency, the mask is also manufactured by adopting a mechanical automatic production line. Chinese patent application publication CN 102805435 a discloses a device for putting on a mask, which can realize automatic welding of ear straps. But the prior art structure is complicated.

Disclosure of Invention

The invention aims to provide a belt releasing mechanism on a mask production line, which is used for releasing an ear belt with a preset length downwards to a mask main body to be welded with the ear belt, and comprises a bending guide rail, a trolley, a mobile driving mechanism and an ear belt pushing mechanism; the trolley is arranged on the bent guide rail so as to move under the guidance of the bent guide rail, and the movement driving mechanism is arranged for driving the trolley to move; the ear band pushing mechanism is mounted on the trolley and is arranged to eject the ear band.

The belt releasing mechanism disclosed by the invention is simple in structure, and the shape of the ear belt is controlled by controlling the moving track of the trolley.

Drawings

Fig. 1 shows a perspective view of an ear belt mask production line to which the present invention is applied;

FIG. 2 shows a top view of an ear strap mask production line to which the present invention is applied;

FIGS. 3 and 4 show perspective views of two different angles of the ear band welding assembly of the present invention;

FIG. 5 shows an enlarged view of part A of FIG. 4;

FIG. 6 shows a front view of an ear band welding assembly of an ear band mask production line to which the present invention is applied;

FIG. 7 shows an enlarged view of part B of FIG. 6;

FIG. 8 shows a top view of FIG. 7;

fig. 9 to 18 are schematic views showing the operation of an ear belt mask production line to which the present invention is applied, in which fig. 13 is a plan view of fig. 12, and fig. 18 is a plan view of fig. 17;

FIG. 19 shows a perspective view of the present invention;

figures 20 and 21 show perspective views of the trolley and its components at two different angles, respectively;

FIG. 22 is a schematic view of the parts of FIG. 21 after they have been exploded;

FIG. 23 illustrates an exploded perspective view of the ear band pushing mechanism of the present invention;

FIG. 24 illustrates a front view of the ear band pushing mechanism of the present invention;

FIG. 25 shows an enlarged partial view of portion C of FIG. 24;

FIG. 26 shows an enlarged view of the portion D of FIG. 24;

fig. 27 is a perspective view showing a tape cutting mechanism of an ear band mask production line to which the present invention is applied;

FIG. 28 is a schematic view of the parts of FIG. 27 after they have been exploded;

FIG. 29 shows a schematic view of a first embodiment of the curved track of the present invention;

FIG. 30 shows a schematic view of a second embodiment of the curved track of the present invention;

fig. 31 shows a schematic view of a mask.

Reference numerals:

10 mask body, 101 ear band, 102 ear band coiled material;

20 conveying lines, 201 pallets;

30 ear strap welding assembly, 301 welding head;

40 a tape supply mechanism;

50 bending guide rails, 501 straight line segments, 502 curved line segments, 503 moving driving motors, 504 gears and 505 toothed belts;

601, 602, a driving motor, 603, a rotating shaft, 604, 605, a helical blade, 606, a tape outlet, 607, a tape inlet, 608, a joint part and 609;

70 frames, 701 swivel bases, 702 turning driving motors, 703 worm wheels and 704 worms;

an 80-belt pressing driving cylinder and a 801-belt pressing block;

90 tape cutting mechanisms, 901 bases, 902 left cutters, 903 right cutters, 904 tape cutting driving cylinders, 905 first sliding grooves, 906 idler wheels and 907 second sliding grooves.

The specific implementation mode is as follows:

as shown in fig. 1 to 28, the mask production line of the present embodiment is particularly suitable for welding the ear straps of a flat mask, and includes a conveying line 20 for conveying the mask body 10 to be welded with the ear straps, in the present embodiment, the conveying line 20 is provided with a plurality of trays 201 distributed along the conveying direction of the conveying line at intervals, each tray 201 is used for loading one mask body 10, a set of ear strap welding assemblies 30 is respectively arranged on two sides of the conveying line 20, each set of ear strap welding assemblies 30 is used for welding an ear strap on one side of the mask body 10, and each ear strap welding assembly 30 includes a strap placing mechanism for placing the ear strap 101 of a predetermined length down to the mask body 10.

The invention can realize automatic welding of the ear belt.

The ear band welding assembly 30 further comprises an ultrasonic welding mechanism and a band supplying mechanism 40 for supplying the ear band to the band releasing mechanism, in this embodiment, the band supplying mechanism is implemented by the prior art, and the ear band is placed on the band supplying mechanism after being wound into the roll 102. This technical scheme can realize the automatic butt fusion of ear area through setting up ultrasonic wave butt fusion mechanism and supplying the tape unit to construct.

The belt releasing mechanism comprises a bending guide rail 50, a trolley, a mobile driving mechanism and an ear belt pushing mechanism; in this embodiment, the curved guide 50 has two embodiments, wherein, in the first embodiment, as shown in fig. 29, the curved guide 50 is U-shaped, and includes two parallel linear sections 501 and a semicircular curved section 502 connected between the two linear sections 501, and both the two linear sections 501 are tangent to the curved section 502; in a second embodiment, as shown in fig. 30, the curved guide 50 includes two intersecting straight line segments 501 and a slightly curved line segment 502 connected between the two straight line segments 501, and both straight line segments 501 are tangent to the curved line segment 502, that is, the curved guide 50 is substantially V-shaped.

The trolley is arranged on the curved guide rail 50 so as to move under the guidance of the curved guide rail 60, the movement driving mechanism is arranged for driving the trolley to move, and in the embodiment, the sliding fit of the trolley and the curved guide rail is realized by adopting the prior art;

the ear belt pushing mechanism is mounted on the trolley so as to enable the ear belt pushing mechanism to move along with the trolley, and the ear belt pushing mechanism is arranged for spitting out the ear belt 101;

the tape supply mechanism 40 feeds the ear tape 101 to the ear tape feed mechanism.

The belt releasing mechanism disclosed by the technical scheme is simple in structure, and the shape of the ear belt is controlled by controlling the moving track of the trolley.

The ear belt pushing mechanism is a spiral conveyor and comprises a pipe body 601, a pushing driving motor 602 and a rotating shaft 603;

the tube 601 is hollow and has a lumen 604;

the rotating shaft 603 is placed in the lumen 604, and the axis of the rotating shaft 603 is overlapped with the axis of the tube 601, and the rotating shaft 603 is provided with a helical blade 605 spirally wound around the rotating shaft along the axial direction of the rotating shaft;

the pushing driving motor 602 is installed at the upper end of the tube 601, and an output shaft of the pushing driving motor 602 is coupled to the rotating shaft 603, so that the pushing driving motor drives the rotating shaft to rotate;

the lower end of the tube body 601 is provided with a tape outlet 606;

a belt inlet 607 communicated with the tube cavity 604 is formed in the side wall of the tube body 601, and the ear belt conveyed to the ear belt pushing mechanism by the belt supplying mechanism enters the tube cavity through the belt inlet;

the tape inlet 607, the lumen 604 and the tape outlet 606 are sequentially communicated to form an ear tape pushing path.

The ear belt pushing mechanism disclosed by the technical scheme is simple in structure, and the ear belt can be placed downwards by combining the ear belt pushing mechanism with the trolley.

In this embodiment, the ear band inserted into the lumen through the band inlet is spirally wound around the rotary shaft in the axial direction of the rotary shaft, so that when the rotary shaft is rotated, the spiral blade pushes the ear band to be discharged from the band discharge nozzle. The ear belt output by the belt supply mechanism enters the tube cavity through the belt inlet.

The ear belt output by the belt supply mechanism enters the tube cavity through the belt inlet.

In this embodiment, propelling movement driving motor's fixed ground is installed in the upper end of body, goes out the lower extreme that the area mouth was installed in the body fixedly.

The tape nozzle 606 includes a joint portion 608 and a nozzle portion 609 which communicate with each other;

the joint part 608 is butted with the lower end of the pipe body 601, and the axis of the joint part 608 is superposed with the axis of the pipe body 601;

the axis of the mouth 609 is perpendicular to the axis of the joint 608;

the trolley comprises a frame 70 and a rotating seat 701 rotatably arranged on the frame 70, wherein a U-turn driving mechanism for driving the rotating seat 701 to rotate is arranged between the frame 70 and the rotating seat 701; in the embodiment, the turning driving mechanism drives the rotating seat to rotate 180 degrees each time, so that the orientation of the turning mouth part is realized; the U-turn driving mechanism can drive the rotary seat to rotate forward 180 degrees and rotate backward 180 degrees alternately;

the tube 601 is fixedly mounted on a turret 701.

This technical scheme can realize accomplishing the butt fusion of one side ear area of a gauze mask main part respectively at dolly back and forth movement in-process through setting up the actuating mechanism that turns around. Namely, the welding of the ear belt at one side of the mask body is completed when the trolley moves from the starting point to the end point of the bent guide rail; and the welding of the ear belt at one side of the other mask body is completed when the trolley returns to the starting point from the terminal point of the bent guide rail. According to the technical scheme, annular rotation is not needed, and the space occupied by equipment can be saved.

The swivel base 701 is further provided with a belt pressing mechanism, the belt pressing mechanism comprises a belt pressing driving cylinder 80 and a belt pressing block 801, the cylinder body of the belt pressing driving cylinder 80 is fixedly arranged on the swivel base 701, the belt pressing block 801 is fixedly arranged on the piston rod of the belt pressing driving cylinder 80, and the axis of the piston rod of the belt pressing driving cylinder 80 is parallel to the axis of the pipe body 602;

the tape pressing block 801 is located in front of the mouth 609 in the advancing direction of the ear tape 101 discharged from the mouth 609. According to the technical scheme, the belt pressing block is driven to ascend and descend vertically through the belt pressing driving cylinder so as to loosen or press the ear belt ejected from the belt outlet.

This technical scheme is through setting up the belt pressing mechanism on the swivel mount for belt pressing mechanism and ear area push mechanism follow the dolly motion simultaneously, and relative position between them keeps unchangeable, so that accomplish the secondary of the ear area of same gauze mask main part and push down the butt fusion work, and need not to set up belt pressing mechanism respectively at the starting point and the terminal point of crooked guide rail.

The ultrasonic welding mechanism comprises a welding head 301, the bending guide rail 50 is positioned right above the welding head 301, and a group of tape cutting mechanisms 90 are respectively arranged on two sides of the welding head 301. The tape cutting mechanism may be implemented by adopting the prior art, as shown in fig. 27 and fig. 28, the tape cutting mechanism 90 includes a base 901, a left knife 902, a right knife 903 and a tape cutting driving cylinder 904, the left knife 902 and the right knife 903 are hinged to each other, a cylinder body of the tape cutting driving cylinder 904 is fixedly mounted on the base 901, the base 901 is provided with a first sliding groove 905 for accommodating a knife handle of the left knife 902 and a knife handle of the right knife 903, and a length direction of the first sliding groove 905 is parallel to an axial direction of a piston rod of the tape cutting driving cylinder 904;

a piston rod of the tape cutting driving cylinder 904 is fixedly connected with a knife handle of the right knife 903;

a roller 906 is arranged on the handle of the left knife 902, and the axis of the roller 906 is vertical to the axis of the piston rod of the belt shearing driving cylinder 904;

the base 901 is further provided with a second sliding chute 907 for accommodating the roller 906, and the length direction of the second sliding chute 907 is inclined to the axis of the piston rod of the tape cutting driving cylinder 904.

In this embodiment, when the tape cutting driving cylinder drives the handle of a knife of the right knife to slide along the length direction of the first sliding groove, the roller wheel rotates the left knife relative to the right knife under the guide of the second sliding groove, so as to realize the cutting function.

According to the technical scheme, the two groups of belt shearing mechanisms are arranged to respectively correspond to the starting point and the end point of the bent guide rail, so that the ear belts can be sheared off when the trolley is at the starting point and the end point of the bent guide rail. Specifically, when the trolley moves from the starting point to the end point of the bent guide rail and completes the welding of the ear belt on one side of the mask body, the ear belt is cut off by the belt cutting mechanism corresponding to the end point; when the trolley returns to the starting point from the end point of the bent guide rail and completes the welding of the ear belt at one side of the other mask body, the ear belt is cut by the belt cutting mechanism corresponding to the starting point.

The movement driving mechanism comprises a movement driving motor 503, a gear 504 and a toothed belt 505, wherein the toothed belt 505 is installed on the curved guide 50 in a manner of extending along the length direction of the curved guide 50, the movement driving motor 503 is fixedly installed on the frame 70, the gear 504 is fixedly installed on an output shaft of the movement driving motor 503, and the gear 504 is meshed with the toothed belt 505;

the u-turn driving mechanism comprises a u-turn driving motor 702, a worm wheel 703 and a worm 704, wherein the u-turn driving motor 702 is fixedly installed on the frame 70, the worm 704 is fixedly installed on an output shaft of the u-turn driving motor 702, the worm wheel 703 is fixedly installed on the swivel base 701, and the axis of the worm wheel 703 is coincident with the rotation axis of the swivel base 701.

The working principle of the embodiment is as follows:

as shown in fig. 7 and 8, the trolley is first driven to a predetermined first position (i.e., a starting position) and then stopped, the trolley being located on one side of the welding head;

as shown in fig. 9, the pushing driving motor starts to start, the ear band is ejected from the mouth, and after a predetermined time, the pushing driving motor stops working, and at this time, a section of the ear band protrudes out of the mouth;

as shown in fig. 10, the belt pressing driving cylinder drives the belt pressing block to descend, so that the ear belt protruding out of the mouth part is pressed on the welding head, and at the moment, the ultrasonic welding mechanism starts to work, and the first welding of the ear belt and the mask body is realized;

as shown in fig. 11, after the first welding of the ear band and the mask body is completed, the ultrasonic welding mechanism stops working, and the band pressing driving cylinder drives the band pressing block to ascend and reset so as to enable the band pressing block to leave the welding head;

driving the trolley to move again, simultaneously pushing the driving motor to start again, and continuously spitting out the ear belt by the mouth in the moving process of the trolley;

as shown in fig. 12 and 13, the carriage stops after reaching a predetermined second position (i.e., an end position), and the pushing driving motor stops working to stop ejecting the ear belts, so that the carriage moves from one side of the welding head to the other side;

as shown in fig. 14, the pressing belt driving cylinder drives the pressing belt block to descend again, so that the ear belt protruding out of the mouth part is pressed on the welding head, and at the moment, the ultrasonic welding mechanism starts to work, and secondary welding of the ear belt and the mask body is realized;

as shown in fig. 15, after the second welding of the ear strap and the mask body is completed, the ultrasonic welding mechanism stops working, the strap shearing mechanism on the same side of the trolley starts working, and the strap shearing driving cylinder drives the handle of the right knife to move upwards, so that the ear strap is sheared.

As shown in fig. 16, after the ear belt is cut off, the belt cutting driving cylinder drives the tool shank of the right knife to move downwards to reset, and the belt pressing driving cylinder drives the belt pressing block to move upwards to reset, so that the belt pressing block leaves the welding head;

at this point, the ear straps on one side of the mask body are welded. As shown in fig. 31, the mask is composed of a mask body 10 and ear bands 101 welded to both sides of the mask body 10.

As shown in fig. 17 and 18, the u-turn driving motor starts to rotate 180 degrees, and then stops working;

thereafter, the welding of the ear band of the next mask body is waited for.

In this embodiment, the moving driving motor can selectively rotate forward and backward, thereby driving the trolley to move back and forth.

In this embodiment, the mask body is not shown in any of fig. 7 to 18.

Claims

1. The utility model provides a put belting on gauze mask production line for the ear area of predetermined length is transferred to the gauze mask main part of treating the butt fusion ear area, its characterized in that:

the belt releasing mechanism comprises a bending guide rail, a trolley, a mobile driving mechanism and an ear belt pushing mechanism;

the trolley is arranged on the bent guide rail so as to move under the guidance of the bent guide rail, and the movement driving mechanism is arranged for driving the trolley to move;

the ear band pushing mechanism is mounted on the trolley and is arranged to eject the ear band.

2. The tape deck according to claim 1, wherein:

the ear belt pushing mechanism is a spiral conveyor and comprises a pipe body, a pushing driving motor and a rotating shaft;

the tube body is hollow and has a tube cavity;

the rotating shaft is arranged in the tube cavity, the axis of the rotating shaft is superposed with the axis of the tube body, and the rotating shaft is provided with a helical blade spirally wound on the rotating shaft along the axial direction of the rotating shaft;

the pushing driving motor is arranged at the upper end of the tube body, and an output shaft of the pushing driving motor is connected with the rotating shaft;

the lower end of the tube body is provided with a tape outlet nozzle;

the side wall of the tube body is provided with a belt inlet communicated with the tube cavity;

the belt inlet, the pipe cavity and the belt outlet nozzle are sequentially communicated to form an earbelt pushing path.

3. The tape unwind mechanism of claim 2, wherein:

the tape outlet nozzle comprises a joint part and a nozzle part which are communicated with each other;

the joint part is butted with the lower end of the pipe body, and the axis of the joint part is superposed with the axis of the lower end of the pipe body;

the axis of the mouth part is perpendicular to the axis of the joint part;

the trolley comprises a frame and a rotary seat which is rotatably arranged on the frame, wherein a U-turn driving mechanism for driving the rotary seat to rotate is arranged between the frame and the rotary seat;

the tube is fixedly installed on the rotary seat.

4. The tape deck according to claim 3, wherein:

the rotating seat is also provided with a belt pressing mechanism, the belt pressing mechanism comprises a belt pressing driving cylinder and a belt pressing block, the cylinder body of the belt pressing driving cylinder is fixedly arranged on the rotating seat, the belt pressing block is fixedly arranged on the piston rod of the belt pressing driving cylinder, and the axis of the piston rod of the belt pressing driving cylinder is parallel to the axis of the pipe body;

the band pressing block is located in front of the mouth in the advancing direction of the ear band ejected from the mouth.

5. The unwind mechanism of any of claims 1 to 4, wherein: the curved guide rail comprises two parallel straight line sections and a semicircular curve section connected between the two straight line sections, and the two straight line sections are tangent to the curve section.

6. The unwind mechanism of any of claims 1 to 4, wherein: the curved guide rail comprises two crossed straight line sections and a curve section which is connected between the two straight line sections and is in a shape of inferior arc, and the two straight line sections are tangent to the curve section.