阅读说明：本技术 一种口罩耳带焊接机 (Mask ear belt welding machine ) 是由 龙晓斌 胡海峰 于 2020-12-08 设计创作，主要内容包括：本发明公开了一种口罩耳带焊接机,包括工作台,工作台上设置有焊接装置、口罩本体输送线、耳带输送线、布线机构、以及剪切机构,口罩本体输送线工作时将口罩本体输送至焊接装置的工作区域；耳带输送线的一侧间隔设置有多个夹线机构,每一夹线机构包括两个间隔布置的夹线装置,耳带输送线的另一侧间隔设置有多根绕线柱；布线机构,位于耳带输送线的一侧,用于将线材呈蛇形地布置在绕线柱和夹线机构之间；剪切机构用于在夹线机构的两个夹线装置之间将线材剪断,剪断形成的耳带由耳带输送线输送至焊接装置的工作区域。本发明的口罩耳带焊接机能够自动、高效地将口罩本体和耳带焊接在一起。(The invention discloses a mask ear belt welding machine which comprises a workbench, wherein a welding device, a mask body conveying line, an ear belt conveying line, a wiring mechanism and a shearing mechanism are arranged on the workbench, and the mask body conveying line conveys a mask body to a working area of the welding device when in work; a plurality of wire clamping mechanisms are arranged on one side of the ear belt conveying line at intervals, each wire clamping mechanism comprises two wire clamping devices which are arranged at intervals, and a plurality of winding posts are arranged on the other side of the ear belt conveying line at intervals; the wiring mechanism is positioned on one side of the ear belt conveying line and used for arranging the wire rod between the winding post and the wire clamping mechanism in a snake shape; the shearing mechanism is used for shearing the wires between the two wire clamping devices of the wire clamping mechanism, and the ear belts formed by shearing are conveyed to the working area of the welding device by the ear belt conveying line. The mask ear belt welding machine can automatically and efficiently weld the mask body and the ear belt together.)

1. The utility model provides a gauze mask ear strap welding machine, includes workstation (1), workstation (1) on be provided with welding set (2), its characterized in that, workstation (1) on be provided with:

the mask body conveying line (31) conveys the mask bodies (100) to a working area of the welding device (2) one by one when the mask body conveying line (31) works;

the wire clamping mechanism comprises an ear belt conveying line (32), wherein a plurality of wire clamping mechanisms (6) moving along with the ear belt conveying line are arranged on one side of the ear belt conveying line (32) at intervals, each wire clamping mechanism (6) comprises two wire clamping devices, the two wire clamping devices are arranged at intervals so that the two wire clamping devices can clamp the wire (200) at different positions respectively, and a plurality of winding posts (321) moving along with the ear belt conveying line are arranged on the other side of the ear belt conveying line (32) at intervals;

the wiring mechanism (4) is positioned on one side of the ear belt conveying line (32), the wiring mechanism (4) comprises a cycloid arm (41) and a cycloid driver (42) capable of driving the cycloid arm (41) to reciprocate, a wire guide groove (411) positioned above the ear belt conveying line (32) is formed in the cycloid arm (41), the cycloid arm (41) moves in a reciprocating mode in cooperation with the ear belt conveying line (32), and wires (200) output from the wire guide groove (411) are arranged between the winding post (321) and the wire clamping mechanism (6) in a snake shape;

and the shearing mechanism (5) is positioned on one side of the ear belt conveying line (32) and is used for shearing the wire (200) between the two wire clamping devices of the wire clamping mechanism (6), and the ear belt formed by shearing is conveyed to the working area of the welding device (2) by the ear belt conveying line (32).

2. The mask ear belt welding machine according to claim 1, characterized in that the wire clamping mechanism (6) comprises a wire winding base (60), two wire clamping rods (61) are movably connected to the wire winding base (60), each wire clamping rod (61) and the side wall of one side of the wire winding base (60) form the wire clamping device, and a power component capable of driving the two wire clamping rods (61) to switch between a clamping position and a releasing position is further arranged on the wire winding base (60).

3. The mask ear belt welding machine according to claim 2, characterized in that two wire clamping rods (61) are respectively hinged to the left side and the right side of the wire winding seat (60), the power component comprises a driving part (62) which is arranged on the wire winding seat (60) in a vertically movable manner, a transmission mechanism which can drive the wire clamping rods (61) to rotate when the driving part (62) moves vertically is arranged between the driving part (62) and the wire clamping rods (61), and a locking device which can lock the driving part (62) when the wire clamping rods (61) are in a clamping state and a spreading state is arranged between the wire winding seat (60) and the driving part (62).

4. The mask ear belt welding machine according to claim 3, characterized in that the transmission structure comprises a chute (611) arranged on the wire clamping rod (61) and a first push shaft (63) arranged on the driving member (62), wherein the first push shaft (63) is inserted in the chute (611).

5. The mask ear strap welding machine according to claim 3, characterized in that the locking device comprises a first bayonet (621) arranged on the driving piece (62), a second bayonet (622) arranged on the driving piece (62), and a spring positioning bead (64) arranged on the base, wherein the spring positioning bead (64) is clamped into the first bayonet (621) when the wire clamping rod (61) is in a clamping state, and the spring positioning bead (64) is clamped into the second bayonet (622) when the wire clamping rod (61) is in an opening state.

6. The mask ear belt welding machine according to claim 3, characterized in that a first ejector (11) and a second ejector (12) are arranged on the workbench (1) and located on the traveling path of the wire clamping mechanism (6), a first ejector inclined plane (111) is arranged on the first ejector (11), when the wire clamping mechanism (6) moves to the position of the first ejector (11), the first ejector inclined plane (111) pushes the active part (62) to drive the wire clamping rod (61) to clamp, a second ejector inclined plane (121) is arranged on the second ejector (12), and when the wire clamping mechanism (6) moves to the position of the second ejector (12), the second ejector inclined plane (121) pushes the active part (62) to drive the wire clamping rod (61) to loosen.

7. The mask ear belt welding machine according to claim 1, characterized in that the wiring mechanism (4) further comprises a wiring frame (43), the cycloid arm (41) is swingably arranged on the wiring frame (43), a traction device capable of drawing the wire (200) is arranged on the wiring frame (43), and a temporary storage device capable of temporarily storing the wire (200) is arranged between the traction device and the cycloid arm (41).

8. The mask ear strap welding machine according to claim 7, characterized in that the temporary storage device comprises a weight wheel (46) driven by the self gravity to move downwards relative to the wiring rack (43), and a wire slot (461) capable of winding the wire (200) is arranged on the outer side wall of the weight wheel (46).

9. The mask ear strap welding machine according to claim 1, characterized in that the shearing mechanism (5) comprises a shear base (51) fixedly arranged on the workbench (1) and a first movable base (52) capable of moving up and down relative to the shear base (51), a limiting device capable of limiting the maximum stroke of the first movable base (52) moving down is arranged between the shear base (51) and the first movable base (52), the shearing mechanism (5) further comprises a second movable base (53) and a shearing driver (54) capable of driving the second movable base (53) to move up and down relative to the shear base (51), the first movable base (52) and the second movable base (53) are connected through a compressible elastic member (55) so that the second movable base (53) can drive the first movable base (52) to move up and down together, the first movable seat (52) is provided with a shearing cutter group, and the second movable seat (53) is connected with the shearing cutter group through a transmission device so that the second movable seat (53) can drive the shearing cutter group to carry out shearing action when moving up and down relative to the first movable seat (52).

10. The mask ear belt welding machine according to claim 9, wherein the shearing blade set comprises a fixed blade (56) fixed on the first movable base (52) and a movable blade (57) hinged on the first movable base (52), the transmission device comprises a blade groove (571) arranged on the movable blade (57) and a push rod (58) connected on the second movable base (53), the push rod (58) and one end of the push rod are provided with a second push shaft (581), and the second push shaft (581) is inserted in the blade groove (571) so that the second push shaft (582) can drive the movable blade (57) to rotate relative to the fixed blade (56) when moving up and down relative to the fixed blade (56).

Technical Field

The invention relates to the technical field of welding of mask ear straps, in particular to a mask ear strap welding machine.

Background

The mask is a sanitary protective article, and is usually worn at the mouth and nose part for filtering air entering the mouth and nose and blocking substances such as spray, dust, pollen and the like in the air. The mask is generally hung and buckled on the ears of a human body by adopting ear belts, so that the mask body can be attached to the mouth and nose parts. Therefore, in the production process of the mask, one step is to bend the ear belt into a semicircular shape and then weld the two ends of the ear belt on the mask body.

In prior art, the structure of integrated form is all adopted to gauze mask ear area welding machine, and wherein wiring mechanism, welding set and shearing mechanism all integrate in a less region, and wiring mechanism includes a plurality of rotations and line ball spare, and the one end winding of wire rod is on this rotation's lateral wall, and the welded in-process at every turn, its step is: firstly, a rotating piece rotates for a half circle to pull out a section of wire; then the wire pressing piece presses a certain position of the wire on the rotating piece; then the welding machine works to weld a section of drawn wire on the earmuff body positioned below the welding part and the wire; after welding, the cutting device cuts off redundant wires, and the welding part returns to the initial position; the rotor then continues to rotate half a turn and the process repeats. In the welding device, the steps of drawing the wire, pressing the wire, welding, cutting the wire and the like are performed in sequence, a large amount of time is wasted in the connection between the steps, and the working efficiency is difficult to further improve.

Disclosure of Invention

In view of the above, an object of the present invention is to provide a mask ear band welding machine capable of automatically and efficiently welding a mask body and an ear band together.

The technical scheme adopted by the invention for solving the technical problem is as follows:

the utility model provides a gauze mask ear strap welding machine, includes the workstation, the workstation on be provided with welding set, the workstation on be provided with:

the mask body conveying line conveys the mask bodies to a working area of the welding device one by one when the mask body conveying line works;

the wire clamping mechanism comprises two wire clamping devices which are arranged at intervals so that the two wire clamping devices can clamp wires at different positions respectively, and a plurality of winding posts which move along with the ear belt conveying line are arranged at intervals on the other side of the ear belt conveying line;

the wiring mechanism is positioned on one side of the ear belt conveying line and comprises a cycloid arm and a cycloid driver capable of driving the cycloid arm to do reciprocating motion, a wire guide groove positioned above the ear belt conveying line is formed in the cycloid arm, the cycloid arm moves in a reciprocating motion mode in cooperation with the ear belt conveying line, and wires output from the wire guide groove are arranged between the winding post and the wire clamping mechanism in a snake shape;

and the shearing mechanism is positioned at one side of the ear belt conveying line and is used for shearing the wire between the two wire clamping devices of the wire clamping mechanism, and the ear belt formed by shearing is conveyed to the working area of the welding device by the ear belt conveying line.

Preferably, the wire clamping mechanism comprises a winding seat, two wire clamping rods are movably connected to the winding seat, each wire clamping rod and the side wall of one side of the winding seat form the wire clamping device, and a power part capable of driving the two wire clamping rods to switch between a clamping position and a releasing position is further arranged on the winding seat.

Preferably, the two wire clamping rods are respectively hinged to the left side and the right side of the winding seat, the power component comprises a driving part which is arranged on the winding seat in a vertically movable mode, a transmission mechanism which can drive the wire clamping rods to rotate when the driving part moves vertically is arranged between the driving part and the wire clamping rods, and a locking device which can lock the driving part when the wire clamping rods are in a clamping state and an unfolding state is arranged between the winding seat and the driving part.

Preferably, the transmission structure comprises a chute arranged on the wire clamping rod and a first push shaft arranged on the driving part, and the first push shaft is inserted into the chute.

Preferably, the locking device comprises a first bayonet arranged on the driving part, a second bayonet arranged on the driving part, and a spring positioning ball arranged on the base, wherein the spring positioning ball is clamped into the first bayonet when the wire clamping rod is in a clamping state, and the spring positioning ball is clamped into the second bayonet when the wire clamping rod is in an opening state.

Preferably, the workbench is provided with a first ejector and a second ejector which are located on the advancing path of the wire clamping mechanism, the first ejector is provided with a first ejector inclined plane, when the wire clamping mechanism moves to the position of the first ejector, the first ejector inclined plane ejects the driving part to drive the wire clamping rod to clamp, the second ejector inclined plane is provided with a second ejector inclined plane, and when the wire clamping mechanism moves to the position of the second ejector, the second ejector inclined plane ejects the driving part to drive the wire clamping rod to release.

Preferably, the wiring mechanism further comprises a wiring frame, the cycloid arm is arranged on the wiring frame in a swinging mode, a traction device capable of drawing the wire is arranged on the wiring frame, and a temporary storage device capable of temporarily storing the wire is arranged between the traction device and the cycloid arm.

Preferably, the traction device comprises two traction wheels and a traction motor capable of driving the two traction wheels to rotate reversely, and the outer side walls of the two traction wheels are close to each other so as to clamp and draw the wire between the two traction wheels.

Preferably, the temporary storage device comprises a weight wheel which can be driven by the self gravity to move downwards relative to the wiring rack, and a wire slot capable of winding a wire is arranged on the outer side wall of the weight wheel.

Preferably, the outer side wall of the counterweight wheel is further provided with a circumferential limiting groove, the wiring frame is provided with two vertical guide rods, and the two guide rods are embedded into the limiting groove from two sides of the limiting groove respectively to limit the counterweight wheel to be separated from the wiring frame.

Preferably, the shearing mechanism comprises a shear seat fixedly arranged on the workbench and a first movable seat capable of moving up and down relative to the shear seat, a limiting device which can limit the maximum stroke of the downward movement of the first movable seat is arranged between the scissors seat and the first movable seat, the shearing mechanism also comprises a second movable seat and a shearing driver which can drive the second movable seat to move up and down relative to the shearing seat, the first movable seat and the second movable seat are connected through a compressible elastic piece so that the second movable seat can drive the first movable seat to move up and down together, the first movable seat is provided with a shearing cutter group, and the second movable seat is connected with the shearing cutter group through a transmission device so that the second movable seat can drive the shearing cutter group to carry out shearing action when moving up and down relative to the first movable seat.

Preferably, the shearing knife group comprises a fixed blade fixed on the first movable seat and a movable blade hinged on the first movable seat, the transmission device comprises a knife slot arranged on the movable blade and a push rod connected on the second movable seat, a second push shaft is arranged at one end of the push rod and one end of the push rod, and the second push shaft is inserted in the knife slot so that the movable blade can be driven to rotate relative to the fixed blade when the second push shaft moves up and down relative to the fixed blade.

Preferably, the welding device comprises a welding frame fixedly arranged on the workbench, a welding part and a welding driver capable of driving the welding part to move up and down are arranged on the welding frame, two welding heads are arranged at intervals at the lower end of the welding part, and the two welding heads respectively correspond to the positions of the free ends of the two lug belts clamped by the same wire clamping mechanism.

The invention has the beneficial effects that: the mask ear strap welding machine provided by the invention has the advantages that the ear strap production process is independently stripped, the ear strap production work is carried out while welding, the connection time among various steps is saved, and the work efficiency is further improved.

Drawings

FIG. 1 is a perspective view of a mask ear strap welding machine;

FIG. 2 is an enlarged view of portion A of FIG. 1;

FIG. 3 is a front view of the portion of the ear belt conveyor line;

FIG. 4 is a front view of the wire clamping mechanism in a released state;

FIG. 5 is a front view of the wire clamping mechanism in a clamped state;

FIG. 6 is an exploded view of the wire clamping mechanism;

FIG. 7 is a perspective view of the wiring mechanism in an operational state;

FIG. 8 is a perspective view of the shearing mechanism;

FIG. 9 is an exploded view of a portion of the shearing mechanism;

fig. 10 is a diagram showing a relative positional relationship between the mask body and the welding device in an operating state.

Fig. 11 is a wiring schematic diagram of a mask ear strap welding machine.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

Referring to fig. 1 to 11, an embodiment of the present invention provides a mask ear strip welding machine, including a workbench 1, a welding device 2 is disposed on the workbench 1, and the workbench 1 is provided with: the mask body conveying line 31, the ear belt conveying line support 300, the wiring mechanism 4 and the shearing mechanism 5 are used for conveying the mask bodies 100 to the working area of the welding device 2 one by one when the mask body conveying line 31 works; the ear belt conveying line support 300 is provided with an ear belt conveying line 32, one side of the ear belt conveying line 32 is provided with a plurality of wire clamping mechanisms 6 moving along with the ear belt conveying line at intervals, each wire clamping mechanism 6 comprises two wire clamping devices, the two wire clamping devices are arranged at intervals so that the two wire clamping devices can clamp the wires 200 at different positions respectively, and the other side of the ear belt conveying line 32 is provided with a plurality of winding posts 321 moving along with the ear belt conveying line at intervals; the wiring mechanism 4 is positioned at one side of the ear belt conveying line 32, the wiring mechanism 4 comprises a cycloid arm 41 and a cycloid driver 42 capable of driving the cycloid arm 41 to do reciprocating motion, a conduit positioned above the ear belt conveying line 32 is arranged on the cycloid arm 41, a conduit slot 411 is formed in an inner hole of the conduit, the cycloid arm 41 moves in a matching manner with the ear belt conveying line 32 when doing reciprocating motion, and wires 200 output from the conduit slot 411 are arranged between the winding column 321 and the wire clamping mechanism 6 in a snake shape; the cutting mechanism 5 is located at one side of the ear belt conveying line 32 and is used for cutting the wires 200 between two wire clamping devices of the wire clamping mechanism 6 so that an ear belt is formed between every two adjacent wire clamping devices, and the cut ear belt is conveyed to the working area of the welding device 2 through the ear belt conveying line 32.

The mask body conveying line 31 and the ear belt conveying line 32 can adopt devices such as a chain conveying line and a belt conveying line, the mask body conveying line 31 and the ear belt conveying line 32 adopt an arrangement mode of one on the other, and the two rotate reversely. For example, the ear belt conveyor line 32 is provided on the mask body conveyor line 31, the mask body conveyor line 31 rotates counterclockwise, and the ear belt conveyor line 32 rotates clockwise. In order to position the mask body 100, a plurality of trays 311 are arranged on the mask body conveyor line 31 at intervals, and positioning columns 312 for positioning the mask body 100 are arranged at the edges of the trays 311.

Referring to fig. 4 to 6, the thread clamping mechanism 6 includes a winding base 60, two thread clamping rods 61 are movably connected to the winding base 60, each thread clamping rod 61 and a side wall of one side of the winding base 60 form a thread clamping device, and a power member capable of driving the two thread clamping rods 61 to switch between a clamping position and a releasing position is further disposed on the winding base 60.

Preferably, the two wire clamping rods 61 are respectively hinged to the left side and the right side of the wire winding base 60, a notch 601 is arranged on the front side wall of the wire winding base 60, the power component comprises a driving part 62 which is arranged on the wire winding base 60 in a vertically movable manner, a transmission mechanism which can drive the wire clamping rods 61 to rotate when the driving part 62 vertically moves is arranged between the driving part 62 and the wire clamping rods 61, and a locking device which can lock the driving part 62 when the wire clamping rods 61 are in a clamping state and an unfolding state is arranged between the wire winding base 60 and the driving part 62.

In a preferred embodiment of the present invention, the transmission structure includes a chute 611 disposed on the wire clamping rod 61, and a first pushing shaft 63 disposed on the driving member 62, wherein the first pushing shaft 63 is inserted into the chute 611. The first pushing shaft 63 may be a fixed shaft or a rotating shaft capable of rotating relative to the driving member 62. The locking device comprises a first bayonet 621 arranged on the driving piece 62, a second bayonet 622 arranged on the driving piece 62 and a spring positioning ball 64 arranged on the base, wherein the spring positioning ball 64 is clamped into the first bayonet 621 when the wire clamping rod 61 is in a clamping state, and the spring positioning ball 64 is clamped into the second bayonet 622 when the wire clamping rod 61 is in an opening state.

In some embodiments of the present invention, the locking device may also be configured in other ways, for example, the driving member 62 may also be movable up and down, and the spring positioning ball 64 may be disposed on the driving member 62, and two notches may be correspondingly disposed on the base. The wire clamping mechanism 6 can also adopt other structural forms, for example, the driving part 62 is provided with a gear capable of rotating on the base, the gear is meshed with the wire clamping rod 61 through a gear, and the wire clamping rod 61 is driven to rotate in the rotating process of the driving part 62; alternatively, the driving member 62 is a rack that can move up and down, and one end of the wire clamping rod 61 is provided with a gear that meshes with the rack.

Referring to fig. 3, the structure for driving the driving member 62 to move up and down is as follows: the ear belt conveying line support 300 or the workbench 1 is provided with a first ejector 11 and a second ejector 12 which are located on the advancing path of the wire clamping mechanism 6, the first ejector 11 is provided with a first ejector inclined plane 111, when the wire clamping mechanism 6 moves to the position of the first ejector 11, the first ejector inclined plane 111 ejects the driving part 62 to drive the wire clamping rod 61 to clamp tightly, the second ejector 12 is provided with a second ejector inclined plane 121, and when the wire clamping mechanism 6 moves to the position of the second ejector 12, the second ejector inclined plane 121 ejects the driving part 62 to drive the wire clamping rod 61 to release. In order to reduce the friction force, the lower end of the driving member 62 is pivotally connected to a roller 65, and the roller 65 drives the driving member 62 to move downward when rolling along the first pushing inclined plane 111, so that the wire clamping rod 61 is clamped.

Referring to fig. 7, the wiring mechanism 4 further includes a wiring frame 43, the cycloid drive 42 is a motor capable of rotating in forward and reverse directions, the cycloid arm 41 is swingably provided on the wiring frame 43, a traction device capable of traction the wire material 200 is provided on the wiring frame 43, and a temporary storage device capable of temporarily storing the wire material 200 is provided between the traction device and the cycloid arm 41. In some aspects of the present invention, the cycloid arm 41 may be configured to translate back and forth above the ear belt conveyor line.

Preferably, the traction device comprises two traction wheels 44 and a traction motor 45 capable of driving the two traction wheels 44 to rotate reversely, and the outer side walls of the two traction wheels 44 are close to each other so as to clamp and draw the wire 200 therebetween.

Preferably, the temporary storage device comprises a weight wheel 46 driven by its own weight to move downwards relative to the wiring rack 43, and a wire slot 461 capable of winding the wire 200 is arranged on the outer side wall of the weight wheel 46. When the two traction wheels 44 rotate together, the wire 200 is drawn out from the external wire 200 coil to the temporary storage device, in the process of drawing the wire 200, the balance weight wheel 46 gradually descends to temporarily store the drawn wire 200, then the cycloid arm 41 swings to output the temporarily stored wire 200, and the temporarily stored wire 200 is wound between the wire clamping mechanism 6 and the winding post 321 to be used for producing the ear belt.

In order to prevent the counterweight wheel 46 from being separated from the wiring frame 43 and falling off in the working process, a circumferential limiting groove 462 is further arranged on the outer side wall of the counterweight wheel 46, two vertical guide rods 47 are arranged on the wiring frame 43, and the two guide rods 47 are respectively embedded into the limiting groove 462 from two sides of the limiting groove 462 to limit the counterweight wheel 46 from being separated from the wiring frame 43.

Referring to fig. 8 and 9, the shearing mechanism 5 includes a shear seat 51 fixedly disposed on the worktable 1, and a first movable seat 52 capable of moving up and down relative to the shear seat 51, a limiting device capable of limiting a maximum stroke of the first movable seat 52 moving down is disposed between the shear seat 51 and the first movable seat 52, the shearing mechanism 5 further includes a second movable seat 53 and a shearing driver 54 capable of driving the second movable seat 53 to move up and down relative to the shear seat 51, the first movable seat 52 and the second movable seat 53 are connected by a compressible elastic member 55 so that the second movable seat 53 can drive the first movable seat 52 to move up and down together, a shearing knife set is disposed on the first movable seat 52, the second movable base 53 and the cutter group are connected by a transmission device so that the cutter group can be driven to perform a cutting operation when the second movable base 53 moves up and down with respect to the first movable base 52. The shear actuator 54 is preferably a pneumatic cylinder and the elastic member 55 is preferably a spring. The advantage of this design is that it is possible to use one actuator to move the cutting blade set to the position of the wire 200 to be cut, and then to perform a cutting operation to cut the wire 200 after moving to the position in one single stroke cycle. When the wire clamping mechanism 6 with the clamped wire 200 moves to the working area of the shearing mechanism 5, the shearing driver 54 drives the second moving seat 53 to move downwards to drive the first moving seat 52 to move downwards together, the limiting device limits the position of the first moving seat 52 after moving to the proper position, then the second moving seat 53 continues to move downwards to compress the elastic part 55, and at the moment, the power of the second moving seat 53 is transmitted to the shearing cutter set through the transmission device to drive the shearing cutter set to realize shearing action.

In a preferred embodiment of the present invention, the scissor base 51 is provided with a guide bushing 511, the first movable base 52 is provided with a guide post 521 engaged with the guide bushing 511, the position limiting means is a protrusion 522 provided on an upper portion of the guide post 521, and when the first movable base 52 moves downward, the protrusion 522 abuts against an end surface of the guide bushing 511 to limit the position of the first movable base 52. The scissor cutter set comprises a fixed blade 56 fixed on the first movable base 52 and a movable blade 57 hinged on the first movable base 52, the transmission device comprises a knife groove 571 arranged on the movable blade 57 and a push rod 58 connected on the second movable base 53, the push rod 58 and one end are provided with a second push shaft 581, and the second push shaft 581 is inserted in the knife groove 571 so that the movable blade 57 can be driven to rotate relative to the fixed blade 56 when the second push shaft 582 moves up and down relative to the fixed blade 56.

In some embodiments of the present invention, the shearing blade set and the transmission device may also be configured as follows, for example, the shearing blade set employs two blades hinged on the first movable seat 52, and the two blades are provided with the knife slot 571, the transmission device includes a push rod 58 disposed on the second movable seat 53, the push rod 58 is connected with two second push shafts 581, and the two second push shafts 581 are respectively inserted in the knife slot 571 of one blade.

In order to realize welding two ear straps on gauze mask body 100 simultaneously, can all set up ear strap transfer chain 32, wiring mechanism 4 and shearing mechanism 5 into two sets ofly, wherein two ear strap transfer chains 32 are parallel to each other.

Referring to fig. 1, 3 and 11, the working principle of the present invention is: first, the wiring mechanism 4 arranges the wire 200 in a serpentine shape between the winding post 321 and the wire clamping mechanism 6; then the wire clamping mechanisms 6 are conveyed forwards along with the ear belt conveying lines 32, and under the action of the first ejector 11, the two wire clamping rods 61 of each wire clamping mechanism 6 clamp the wires 200; then the thread clamping mechanism 6 is conveyed to the working area of the shearing mechanism 5, the shearing cutter group of the shearing mechanism 5 extends into the notch 601 of the winding seat 60, a section of the thread material 200 between two thread clamping rods 61 is sheared, a section of the ear belt can be formed between every two adjacent thread clamping mechanisms 6, and the two end parts of the sheared ear belt are exposed out of the winding seat 60 of the thread clamping mechanism 6; finally, this length of ear strap is conveyed to the working area of the welding device 2, together with the corresponding wire clamping mechanism 6 and the winding post 321; the synchronous, the reverse operation of gauze mask body transfer chain 31 and ear area transfer chain 32, the line speed of the two is the same, and when the ear area was carried welding set 2's work area, corresponding gauze mask body 100 also was carried welding set 2's work area, then by welding set 2 with the free end welding of gauze mask body 100 and ear area together. After the welding is finished, under the action of the second ejector seat, the two wire clamping rods 61 of the wire clamping mechanism 6 are opened, so that the ear straps and the wire clamping mechanism 6 are loosened, and the welded ear straps and the mask body 100 can move to the next station along with the mask body conveying line 31.

Referring to fig. 10, the welding device 2 includes a welding frame 21 fixedly mounted on the table 1, a welding member 22 and a welding actuator 23 capable of driving the welding member 22 to move up and down are provided on the welding frame 21, the welding actuator 23 is preferably an air cylinder, two welding heads 221 are provided at intervals at the lower end of the welding member 22, and the two welding heads 221 respectively correspond to the positions of the free ends of the two ear belts clamped by the same wire clamping mechanism 6. In the process of pressing down the welding member 22 each time, the free ends of the two ear straps are aligned and welded to the two mask bodies 100, respectively.

Compared with the prior art, the mask ear strap welding machine provided by the invention has the advantages that the procedures for producing the ear straps are independently stripped, the ear straps are produced while welding, the connection time among various steps is saved, and the work efficiency is further improved.

The above is only a preferred embodiment of the present invention, and the technical solutions that achieve the objects of the present invention by basically the same means are all within the protection scope of the present invention.