Shearing device of feeding mechanism of elastic band looping machine
Technical Field
The utility model relates to a sewing machine technique specifically is a shearing mechanism of rubber band lopping machine feeding mechanism.
Background
The elastic band coiling device is equipment for cutting an elastic band at a fixed length and sewing two ends into a ring, and the elastic band is internally provided with an elastic band, so that the section is required to be neat during fixed-length cutting, and the attractiveness of the elastic band can be influenced once the elastic band is cut irregularly; because the widths of some rubber band belts are wide, the shearing of the shearing device at present mainly comprises translational shearing and rotational shearing, when a knife edge is ground in a translational shearing mode, the gap between a movable knife and a fixed knife is enlarged, the shearing effect is influenced, and the adjustment is inconvenient; the main problem of the rotary shearing moving knife is that the gap is inconsistent, and the section is uneven.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a rubber band area lopping machine feeding mechanism's shearing mechanism, shearing mechanism have the discharge port who takes the belting, and the port department is fixed with fixed sword, moves the sword and fixes a position through radial mounting groove and axial direction dead lever, ensures that the edge of a knife and the location edge of a knife of moving the sword keep parallel, and the axial position that the sword can be adjusted in the pivot conveniently adjusts the clearance between the edge of a knife and the fixed sword edge of a knife, ensures to cut the off-section neat of back rubber band area to guarantee the quality of rubber band circle, the utility model discloses fine stability and reliability have.
The following technical scheme is adopted for achieving the purpose:
a shearing device of a feeding mechanism of an elastic band looping machine comprises a connecting seat and a driving device, wherein a band conveying channel is arranged on the connecting seat, a discharge port at the front end of the band conveying channel is fixed on a fixed cutter, a rotating shaft is pivoted on the outer side of the band conveying channel, the axial direction of the rotating shaft is vertical to the direction of the fixed cutter, and a moving cutter connecting seat which is coaxial with the rotating shaft is arranged at the front end of the rotating shaft; the movable cutter connecting seat is provided with a radial mounting groove and an axial positioning hole, the axial positioning hole is communicated with the radial mounting groove, the movable cutter is further arranged at the discharge end, the cutter handle of the movable cutter is contained in the radial mounting groove, the axial positioning hole is internally provided with a fixed ejector rod, the fixed ejector rod axially pushes against the surface of the cutter handle and fixes the movable cutter in the radial mounting groove, and the driving device drives the rotating shaft to rotate so as to drive the movable cutter to rotate and match with the fixed cutter to complete shearing.
The connecting seat comprises a bottom plate and two vertical plates, the two vertical plates are arranged in parallel and vertically fixed on the bottom plate, the belt conveying channel is located between the two vertical plates, the outer wall of one vertical plate is fixed on the rotating shaft fixing sleeve, and the rotating shaft is contained in the rotating shaft fixing sleeve.
The fixing seats are fixed on the front sides of the two vertical plates, the two vertical plates are kept parallel by the fixing seats, and the fixed knife is fixed on the fixing seats.
The horizontal position of the axis of the rotating shaft is slightly higher than that of the fixed knife edge.
The knife handle of the movable knife is further provided with a leaning part, the inner side surfaces of the knife handle and the leaning part and the inner side surface of the movable knife are located on the same plane, the inner side surface of the leaning part leans against the outer side surface of the fixed knife, the knife edge of the movable knife is located on the lower edge of the inner side surface, and the knife edge of the fixed knife is located on the upper edge of the outer side surface.
The movable cutter connecting seat comprises a seat body and a fixed cover, the seat body is fixedly connected with the rotating shaft, the radial mounting groove is formed in the front side face of the seat body, and the fixed cover is fixed on the front side face of the seat body; the axial positioning hole penetrates through the rotating shaft along the shaft center of the rotating shaft, the fixing ejector rod is accommodated in the axial positioning hole, a locking nut is arranged at the rear end opening of the axial positioning hole, and the axial position of the fixing ejector rod is adjusted through the locking nut.
The driving device is an air cylinder device, a driving rod of the air cylinder device is connected with the rotating shaft through a rocker arm, one end of the rocker arm is fixedly connected with the rotating shaft, and the other end of the rocker arm is movably connected with the driving rod.
The lower part of the rocker arm is provided with a guide groove along the length direction of the rocker arm, and the driving rod is provided with a roller which is accommodated in the guide groove.
The rotation axis on still cup jointed and to lean on the spring, lean on spring one end top and sheathe in the pivot is fixed, lean on the spring other end top on the rocking arm, lean on the spring to apply along the axial rearward effort to the rotation axis for lean on the portion of leaning on the medial surface and laminate with the lateral surface of stationary knife all the time.
The movable knife of the utility model is inserted in the radial mounting groove, because the axial direction of the rotating shaft is vertical to the direction of the fixed knife, the direction of the radial mounting groove is naturally parallel to the direction of the knife edge of the fixed knife, the movable knife is fixed along the axial direction of the rotating shaft by the fixed ejector rod in the axial positioning hole when being fixed, thus ensuring the consistent clearance between the movable knife and the fixed knife edge, and the fracture of the elastic band can be very neat when being sheared; meanwhile, the rotating shaft of the utility model is also sleeved with a propping spring, and the movable knife is provided with a propping part, under the action of the propping spring, the inner side surface of the propping part is always attached to the outer side surface of the fixed knife, thus the shearing effect is not influenced by the clearance increase caused by the abrasion of the knife edge; in addition because the utility model discloses fully consider the maintenance and the change of moving the sword later stage, dismantle and simple to operate, the edge of a knife that moves the sword after the change keeps the laminating state with the edge of a knife of stationary knife to the stability and the reliability of product have been promoted.
Drawings
Fig. 1 is a schematic structural diagram (one) of the present invention;
fig. 2 is a schematic structural diagram (ii) of the present invention;
FIG. 3 is a schematic view of the structure of the movable knife of the present invention;
FIG. 4 is an exploded view of the movable blade and the movable blade connecting seat of the present invention;
fig. 5 is a top view of the present invention;
fig. 6 is a sectional view taken along the line a-a in fig. 5 according to the present invention.
Detailed Description
As shown in fig. 1-6, a shearing device of a feeding mechanism of an elastic band looping machine comprises a connecting seat 1 and a driving device 2, wherein a band feeding channel 10 is arranged on the connecting seat 1, a discharging port at the front end of the band feeding channel 10 is fixed on a fixed cutter 3, a rotating shaft 4 is pivoted at the outer side of the band feeding channel 10, the axial direction of the rotating shaft 4 is vertical to the direction of the fixed cutter 3, and a moving cutter connecting seat 5 which is coaxial with the rotating shaft 4 is arranged at the front end of the rotating shaft 4; the movable cutter connecting seat 5 is provided with a radial mounting groove 51 and an axial positioning hole 52, the axial positioning hole 52 is communicated with the radial mounting groove 51, the movable cutter 6 is further arranged at the discharge port, a cutter handle 61 of the movable cutter 6 is accommodated in the radial mounting groove 51, a fixed ejector rod 53 is arranged in the axial positioning hole 52, the fixed ejector rod 53 axially pushes against the surface of the cutter handle 61 and fixes the movable cutter 6 in the radial mounting groove 51, and the driving device 2 drives the rotating shaft 4 to rotate so as to drive the movable cutter 6 to rotate and match with the fixed cutter 3 to complete shearing.
The connecting base 1 comprises a bottom plate 11 and two vertical plates 12, the two vertical plates 12 are arranged in parallel and vertically fixed on the bottom plate 11, the belt conveying channel 10 is positioned between the two vertical plates 12, the outer wall of one vertical plate 12 is fixed on a rotating shaft fixing sleeve 13, and the rotating shaft 4 is accommodated in the rotating shaft fixing sleeve 13; a fixed seat 14 is fixed on the front sides of the two vertical plates 12, the fixed seat 14 enables the two vertical plates 12 to be parallel, and the fixed knife 3 is fixed on the fixed seat 14; the horizontal position of the axis of the rotating shaft 4 is slightly higher than that of the knife edge of the fixed knife 3.
The movable cutter connecting seat 5 comprises a seat body 54 and a fixed cover 55, the seat body 54 is fixedly connected with the rotating shaft 4, a radial mounting groove 51 is formed in the front side face of the seat body 54, and the fixed cover 55 is fixed on the front side face of the seat body 54; the axial positioning hole 52 penetrates through the rotating shaft 4 along the axial center of the rotating shaft 4, the fixing push rod 53 is accommodated in the axial positioning hole 52, a locking nut 56 is arranged at the rear end of the axial positioning hole 52, and the axial position of the fixing push rod 53 is adjusted through the locking nut 56. The knife handle 61 of the movable knife 6 is further provided with a leaning part 62, the inner side surfaces of the knife handle 61 and the leaning part 62 and the inner side surface of the movable knife 6 are located on the same plane, the inner side surface of the leaning part 62 leans against the outer side surface of the fixed knife 3, the knife edge of the movable knife 6 is located on the lower edge of the inner side surface, and the knife edge of the fixed knife 3 is located on the upper edge of the outer side surface.
The driving device 2 is an air cylinder device 21, a driving rod 22 of the air cylinder device 21 is connected with the rotating shaft 4 through a rocker arm 23, one end of the rocker arm 23 is fixedly connected with the rotating shaft 4, and the other end of the rocker arm 23 is movably connected with the driving rod 22; the lower part of the rocker arm 23 is provided with a guide groove 24 along the length direction of the rocker arm, and the driving rod 22 is provided with a roller 25 which is accommodated in the guide groove 24; the rotating shaft 4 on still cup joint and lean on spring 7, lean on spring 7 one end top on the fixed cover 13 of pivot, lean on the spring 7 other end top on rocking arm 23, lean on spring 7 to exert along the axial rearward effort to rotating shaft 4 for lean on 62 medial surfaces of portion and the laminating of lateral surface of stationary knife 3 all the time.
The utility model discloses because the axial of rotation axis is perpendicular with the stationary knife direction, radial mounting groove direction is nature and the stationary knife direction is on a parallel with, move the sword and peg graft in radial mounting groove, move the sword and will move the sword fixed through the fixed ejector pin in the axial positioning hole when fixed along the rotation axis axial, this kind of fixed mode can not cause to move the sword on the one hand and produce rotatoryly fixedly, can ensure to move the sword and the stationary knife edge of a knife clearance remains the unanimity throughout to make and cut back rubber band fracture can be very neat.
Simultaneously the utility model discloses it supports the spring to still overlap at the rotation axis to be equipped with to support to set up the portion of supporting on moving the sword, under the effect that supports and support the spring, support the portion of supporting to support the medial surface all the time with the laminating of the lateral surface of stationary knife, ensure to cut the effect, support through the compression and support and can conveniently make movable sword and stationary knife separation, conveniently move the dismantlement and the installation of sword, the maintenance and the change in the later stage of being convenient for, the edge of a knife that moves the sword after the change keeps the laminating state with the edge of a knife of stationary knife all the time, thereby the stability and the reliability of product have been promoted.