Hairpin type flat wire 2D bending mechanism
Technical Field
The application relates to the technical field of motor manufacturing, in particular to a hairpin type flat wire 2D bending mechanism.
Background
The flat wire motor is different from the round wire motor in the forming mode of the copper wires, the flat wire is favorable for improving the groove fullness rate of the motor, the improvement of the groove fullness rate means that more copper wires can be filled on the premise of unchanged space, stronger magnetic field intensity is generated, the power density is improved, and then the performance of the motor is improved.
At present, coils adopted in a flat wire motor are U-shaped hairpin type 3D flat wires, when the 3D flat wires are produced, the linear flat wires are required to be bent into planar U-shaped hairpin type 2D flat wires through a bending mechanism, and then the U-shaped hairpin type 3D flat wires can be produced by punching the 2D flat wires through a punching mechanism. The bending mechanism comprises a base, a fixed seat fixedly arranged on the base, a rotary table rotationally sleeved on the outer side of the fixed seat and a driving piece arranged on the base and used for driving the rotary table to rotate, the top wall of the fixed seat is provided with a feed chute, and the top wall of the rotary table is rotationally provided with a push wheel.
When the linear flat wire is bent, the feeding mechanism firstly conveys the linear flat wire through the feeding groove, the driving piece drives the rotary table to rotate on the fixing seat, the rotary table drives the push wheel to move, and the push wheel pushes the linear flat wire to bend. After the first bending is completed, the driving piece drives the push wheel to reset through the turntable, the feeding mechanism continues to convey the flat wire, and the driving piece drives the push wheel to bend for the second time. After the 2D flat wire is formed by bending for many times, the shearing mechanism automatically cuts off the flat wire at the feeding mechanism, and the discharging mechanism automatically discharges the 2D flat wire, so that the automatic production of the 2D flat wire can be completed.
Because the required 3D flat wire of the flat wire motor of different specifications is different, and then 2D flat wire also can have the difference, the wire diameter size and the R angle of buckling of different 2D flat wires are also different. Too big line footpath can lead to the flat wire unable feed chute that passes, and the line footpath is too little can lead to the flat wire to take place to rock in the feed chute, simultaneously, pushes away the 2D flat wire that the wheel was difficult to buckle out different R angles, and then makes bending mechanism be difficult to produce different 2D flat wires.
Disclosure of Invention
In order to improve the applicability of a bending mechanism, the application provides a hairpin type flat wire 2D bending mechanism.
The application provides a hairpin type flat wire 2D bending mechanism which adopts the following technical scheme:
the utility model provides a hairpin formula flat wire 2D bending mechanism, includes the base, sets up fixing base on the base, rotates the cover and establishes the carousel in the fixing base outside and set up and be used for driving the carousel and carry out pivoted drive assembly on the base, the fixed piece that is provided with in top of fixing base to make bending mechanism be applicable to the bending of different wire footpath flat wires, the feed chute has been seted up in the horizontal direction running through on the roof of fixed piece, be provided with the subassembly of buckling that is used for buckling the flat wire on the carousel, the subassembly of buckling includes slider, push away wheel and mounting, the slider slides along carousel diameter direction and sets up on the carousel, the mounting sets up on the carousel and fixes the slider, and then buckles R angle size to the flat wire and adjust.
Through adopting above-mentioned technical scheme, when buckling straight line ribbon-wire, feed mechanism is earlier with the feeding chute that straight line ribbon-wire passed the fixed block, and drive assembly passes through the carousel and drives the subassembly of buckling and remove, and the push wheel of the subassembly of buckling promotes straight line ribbon-wire and takes place to buckle. After the first bending is completed, the driving piece drives the push wheel to reset through the turntable, the feeding mechanism continues to convey the flat wire, and the driving piece drives the push wheel to bend for the second time. After the 2D flat wire is formed by bending for many times, the shearing mechanism automatically cuts off the flat wire at the feeding mechanism, and the discharging mechanism automatically discharges the 2D flat wire, so that the automatic production of the 2D flat wire can be completed. When the flat wires with different wire diameters are required to be bent, the fixing blocks are detached from the fixing seat, and the fixing blocks corresponding to the wire diameters of the flat wires are replaced, so that the bending mechanism is applicable to bending of the flat wires with different wire diameters; when the R angle of different sizes needs to be buckled to the flat wire, slide the slider on the carousel, the slider drives and pushes away the wheel and move towards being close to or keeping away from the fixed block direction, and the rethread mounting is fixed the slider, can lock to pushing away the wheel position, so, can adjust the size of the R angle of flat wire buckling to improved the suitability of bending mechanism, made bending mechanism can carry out the bending of different size R angles to the flat wire of different wire footprints.
Preferably, the first chute with the top end open is formed in the rotary table along the diameter direction of the rotary table, the sliding block is slidably arranged in the first chute along the diameter direction of the rotary table, the rotary table is positioned at two sides of the opening end of the first chute, the two sides of the top end of the sliding block are provided with linear limiting grooves, and the limiting grooves are slidably matched with the linear limiting grooves along the sliding direction of the sliding block.
Through adopting above-mentioned technical scheme, when need adjust push away the wheel position, slide the slider in first spout, the slider drives and pushes away the wheel and remove, and when the slider slides, two spacing on the carousel and two sharp spacing groove cooperation on the slider are spacing to the slider slip for it is more stable to slide, and then makes to push away the wheel and adjusts more accurately.
Preferably, the fixing piece slides along the axis direction of the turntable and is arranged in the turntable in an adjustable manner, one side wall of the sliding block along the rotating direction of the turntable is a first inclined wall, the width of the sliding block is continuously increased from top to bottom, the side wall, close to the first inclined wall, of the fixing piece is a second inclined wall, the width of the fixing piece is continuously reduced from top to bottom, and the second inclined wall is abutted to the first inclined wall.
Through adopting above-mentioned technical scheme, after the push away the wheel position and accomplish the regulation, the second inclined wall laminating slider of downward movement regulation mounting and messenger mounting along with the continuous downward movement of mounting, the mounting supports the slider tightly in first spout through second inclined wall and first inclined wall to fix the slider, upwards move the regulation mounting in the same way and make the second inclined wall break away from first inclined wall, can remove the regulation to the slider. So set up, adopt the mode of second inclined wall and first inclined wall butt laminating to fix the slider for the slider can realize stepless regulation, and then makes the R angle that the mechanism can buckle more equidimension not.
Preferably, the fixed block is detachably and fixedly installed on the fixed seat through a bolt, a limiting disc is arranged on the bottom wall of the fixed block, a limiting ring groove is formed in the top wall of the fixed seat, and the limiting disc is inserted into the limiting ring groove in a matching manner.
Through adopting above-mentioned technical scheme, when changing the fixed block, dismantle the bolt of getting off can dismantle the fixed block from the fixing base and take off, when installing the fixed block, peg graft the spacing dish of fixed block in the spacing annular of fixing base, can follow the circumference of fixed block and fix a position the fixed block fast for the fixed block can not take place the skew on the positioning seat, reuse bolt with fixed block fixed mounting on the fixing base. So set up, use spacing dish and spacing annular to fix a position the laying of installation piece to be convenient for install the fixed block fast.
Preferably, the top of fixing base is provided with the location fixture block along self diameter direction, the draw-in groove has been seted up on the diapire of fixed block, location fixture block looks adaptation is pegged graft in the draw-in groove.
Through adopting above-mentioned technical scheme, install the fixed block on the fixing base and make the location fixture block peg graft in the draw-in groove, can follow the circumference of fixed block and carry out quick location to the fixed block, cooperate spacing dish and spacing annular again and carry out diversified location to the fixed block to be convenient for install fast to the fixed block.
Preferably, the fixed block is located the both sides of feed chute feed end and all rotates and be provided with the leading wheel.
Through adopting above-mentioned technical scheme, when feed mechanism carries into the feed chute with sharp ribbon-wire, two leading wheels of feed chute feed end lead the ribbon-wire to in the ribbon-wire gets into the feed chute of being convenient for.
Preferably, two bending assemblies are arranged on the turntable, and the linear flat wire passes through the feeding groove and then is positioned between the two bending assemblies.
Through adopting above-mentioned technical scheme, when drive assembly drove the carousel forward rotation, the carousel drove a subassembly of buckling and remove and carry out forward buckling to the flat wire, and when drive assembly drove carousel reverse rotation, the carousel drove another subassembly of buckling and remove and carry out reverse buckling to the flat wire. By the arrangement, the bending mechanism can rapidly bend the flat wire in the forward direction or the reverse direction.
Preferably, a cover plate is arranged on the fixed block, a plurality of pressing wheels are arranged on the bottom wall of the cover plate and positioned in the feeding chute, and the bottoms of the pressing wheels are abutted against the top wall of the flat wire.
Through adopting above-mentioned technical scheme, after the straight line ribbon line passed the feed chute, a plurality of pinch rollers roll butt on the ribbon line, and the in-process of bending of ribbon line, the pinch roller carries out the butt spacing to the ribbon line for the condition of perk is difficult for appearing in the ribbon line, and then has improved the precision that the ribbon line was buckled.
Preferably, the bottom of the cover plate is provided with a lifting plate in a sliding manner along the vertical direction, the lifting plate is arranged along the length direction of the feed chute and is positioned above the feed chute, the pressing wheels are arranged on the lifting plate in a rotating manner at intervals, the top of the lifting plate is provided with an adjusting rod in a rotating manner, and threads of the adjusting rod penetrate through the cover plate.
Through adopting above-mentioned technical scheme, when needs change the fixed block and be used for being suitable for the flat wire of different wire footpaths, dismantle the apron from original fixed block and take down the back and install on the fixed block after changing, rotate the regulation pole, adjust pole drive lifter plate lift and remove, lifter plate drive a plurality of pinch rollers and go up and down jointly in the feed chute to make the pinch roller can the spacing flat wire of different thickness of butt.
Preferably, the apron can be dismantled and set up on the fixed block, apron bottom rotates and is provided with the clamp plate, the clamp plate sets up in the feed chute along flat wire entering direction slope, be provided with in the apron and be used for driving the first elastic component of clamp plate pivoted downwards, be provided with the second elastic component on the apron diapire, the bottom butt clamp plate roof of second elastic component, just the clamp wheel rotates the bottom that sets up at the clamp plate.
Through adopting above-mentioned technical scheme, when needs change the fixed block and be used for being suitable for the flat wire of different wire footpaths, dismantle the apron from original fixed block and take down the back and install on the fixed block after changing, when the flat wire gets into in the feed chute, flat wire promotes the clamp plate and upwards rotates for the pinch roller butt of clamp plate tip is at the top of flat wire, simultaneously, first elastic component and second elastic component act on the clamp plate jointly, make the clamp plate drive the pinch roller and butt flat wire all the time, and then make the pinch roller can automatic butt spacing flat wire of different thickness.
In summary, the present application includes at least one of the following beneficial technical effects:
1. by adopting the fixing blocks and the sliding blocks, when flat wires with different wire diameters are required to be bent, the fixing blocks are detached from the fixing seat, and the fixing blocks corresponding to the wire diameters of the flat wires are replaced, so that the bending mechanism is applicable to bending of the flat wires with different wire diameters; when the flat wire needs to be bent for R angles with different sizes, the sliding block is slid on the turntable, and then the fixing piece is used for fixing the sliding block, so that the position of the push wheel can be adjusted, and the size of the bent R angle of the flat wire can be adjusted, thereby improving the applicability of the bending mechanism, and enabling the bending mechanism to bend the flat wire with different wire diameters for R angles with different sizes;
2. the sliding block is fixed in a manner of abutting and attaching the second inclined wall and the first inclined wall, so that stepless adjustment of the sliding block can be realized, and further, the bending mechanism can bend R angles with different sizes;
3. the fixing block is positioned in multiple directions by adopting the plugging fit of the positioning clamping block, the clamping groove, the limiting disc and the limiting ring groove, so that the fixing block can be quickly installed.
Drawings
Fig. 1 is a schematic overall structure of a hairpin type flat wire 2D bending mechanism in embodiment 1 of the application;
fig. 2 is a cross-sectional view of the whole structure of the hairpin flat wire 2D bending mechanism in embodiment 1 of the application;
fig. 3 is a schematic diagram of a portion of the structure of the hairpin type flat wire 2D bending mechanism of embodiment 1 of the application with a protruding display bending assembly;
fig. 4 is a schematic forward view of a part of the structure of the hairpin flat wire 2D bending mechanism in embodiment 1 of the application;
fig. 5 is a schematic diagram showing a part of the structure of the hairpin flat wire 2D bending mechanism in embodiment 1 of the application;
fig. 6 is a schematic diagram of the overall structure of the hairpin-type flat wire 2D bending mechanism in embodiment 2 of the application;
fig. 7 is a cross-sectional view showing the overall structure of the hairpin-type flat wire 2D bending mechanism in embodiment 2 of the application;
fig. 8 is a schematic diagram of the overall structure of the hairpin type flat wire 2D bending mechanism in embodiment 3 of the application;
fig. 9 is a cross-sectional view showing the overall structure of the hairpin-type flat wire 2D bending mechanism in embodiment 3 of the application;
fig. 10 is an enlarged schematic view of fig. 9 a in accordance with the present application.
Reference numerals illustrate: 1. a base; 2. a fixing seat; 3. a drive assembly; 4. a fixed block; 5. a feed chute; 6. a bending assembly; 61. a slide block; 62. push wheel; 63. a fixing member; 7. a turntable; 8. a first chute; 9. a limit bar; 10. a linear limit groove; 11. a first sloped wall; 12. a second sloped wall; 13. a limiting disc; 14. a limit ring groove; 15. positioning a clamping block; 16. a clamping groove; 17. a guide wheel; 18. a cover plate; 19. a pinch roller; 20. a lifting plate; 21. an adjusting rod; 22. a pressing plate; 221. an abutting plate; 23. a first elastic member; 24. a second elastic member; 25. a slot; 26. a planar plate; 27. a second chute; 28. a connecting plate; 29. a mounting groove; 30. an arc-shaped guide rod; 31. an arc-shaped guide groove; 32. a slip groove; 33. a sliding block; 34. and a third elastic member.
Detailed Description
The application is described in further detail below with reference to fig. 1-10.
The embodiment of the application discloses a hairpin type flat wire 2D bending mechanism.
Example 1:
referring to fig. 1 and 2, a hairpin type flat wire 2D bending mechanism includes a base 1, a fixing base 2, a turntable 7 and a driving component 3, wherein the fixing base 2 is cylindrical and is fixedly installed on the base 1 along a vertical direction, the driving component 3 is installed on the base 1, and the turntable 7 is annular and is fixedly installed at a driving end of the driving component 3. The fixed block 4 is detachably and fixedly installed on the top end of the fixed seat 2 through bolts, the fixed block 4 is cylindrical, and the turntable 7 is rotatably sleeved outside the fixed seat 2 and the fixed block 4. In the application, the driving component 3 can be a servo motor and a speed reducer, the servo motor and the speed reducer are both arranged on the base 1, the driving end of the servo motor is connected with the input end of the speed reducer, the output end of the speed reducer is connected with the turntable 7, and the servo motor drives the turntable 7 to rotate forwards or reversely outside the fixed block 4 through the speed reducer.
Referring to fig. 1 and 3, a feeding chute 5 is formed in the middle of the top wall of a fixed block 4 along the horizontal direction, two bending assemblies 6 are mounted on a turntable 7 at intervals along the circumferential direction of the turntable, an included angle between the two bending assemblies 6 and the central connecting line of the fixed block 4 is 120 degrees, and guide wheels 17 are symmetrically mounted on two sides of the feeding chute 5 in the width direction of the feeding opening in a rotating mode. The feeding mechanism conveys the linear flat wire through the feed chute 5 of the fixed block 4, the flat wire is positioned between the two bending assemblies 6 after passing through the feed chute 5, and the flat wire is guided by the two guide wheels 17, so that a wire is conveniently inserted into the feed chute 5.
The driving component 3 drives the rotary table 7 to rotate positively, the rotary table 7 drives one bending component 6 to move and bend the flat wire positively, and the 2D flat wire can be manufactured after bending for many times. When the driving component 3 drives the rotary table 7 to reversely rotate, the rotary table 7 drives the other bending component 6 to move and reversely bend the flat wire, so that the bending mechanism can conveniently and rapidly bend the flat wire in the forward direction or the reverse direction.
The fixed block 4 is located 5 discharge gate width direction both sides of feed chute and is the fillet setting, and bending mechanism is when carrying out forward or reverse buckling to the flat wire, and two fillets of 5 discharge ends of feed chute protect flat wire department of buckling for the flat wire is difficult for taking place to interfere with the fixed block 4, and then is difficult for impaired when making flat wire buckle.
When the flat wires with different wire diameters are required to be bent, the bolts are rotated, the fixed block 4 is detached from the fixed seat 2, and the fixed block 4 is replaced, so that the width of the feed chute 5 in the fixed block 4 is matched with the wire diameters of the flat wires, and the bending mechanism can be suitable for bending the flat wires with different wire diameters.
Referring to fig. 4 and 5, a limiting ring groove 14 is formed in the middle of the top end of the fixing seat 2, a positioning clamping block 15 is fixedly mounted on the middle of the top end of the fixing seat 2 along the horizontal direction through bolts, part of the positioning clamping block 15 is located in the limiting ring groove 14, and the positioning clamping block 15 divides the limiting ring groove 14 into two parts. The middle part evagination integrated into one piece in the bottom of fixed block 4 has spacing dish 13, and draw-in groove 16 has been seted up along the horizontal direction in the middle part in the bottom of fixed block 4 and spacing dish 13 middle part, and draw-in groove 16 divides spacing dish 13 into two.
When changing the installation to fixed block 4, place fixed block 4 on the top of fixing base 2, the spacing dish 13 looks adaptation of fixed block 4 is pegged graft in the spacing annular 14 of fixing base 2, and the spacing fixture block looks adaptation of fixing base 2 is pegged graft in the draw-in groove 16 of fixed block 4, can carry out diversified location to the lay the position of installation piece to be convenient for install fast to fixed block 4.
Referring to fig. 1 and 3, a plane plate 26 is installed on the base 1 through four upright posts, the plane plate 26 is L-shaped and covers the outer side of the turntable 7, and one end of the plane plate 26, which is close to the feed inlet of the feed chute 5, and one end, which is close to the bending direction of the discharge outlet of the feed chute 5, are inclined downwards. When bending the flat wire, the flat plate 26 supports the flat wire, so that the flat wire is more stable when being bent, and when the flat wire moves onto the flat plate 26 due to the two downward inclined ends of the flat plate 26, interference with the flat plate 26 is not easy to occur.
Specifically, the bending component 6 includes a slider 61, a push wheel 62 and a fixing member 63, a first chute 8 is provided on the top wall of the turntable 7 along the diameter direction of the top wall, two first chutes 8 are provided at intervals along the circumference of the turntable 7, and the top ends of the two sliding sliders 61 are provided in the first chute 8 along the diameter direction of the turntable 7. The push wheel 62 is rotatably installed in the middle of the top wall of the slide block 61, and the height of the middle of the side wall of the push wheel 62 in the vertical direction is the same as that of the middle of the feed chute 5 in the vertical direction. The fixing member 63 is installed in the turntable 7 and fixes the slider 61.
The turntable 7 drives the push wheel 62 to move through the sliding block 61, and the push wheel 62 moves to squeeze the linear flat wire and bend the flat wire. The sliding block 61 slides in the first chute 8 of the turntable 7, the sliding block 61 drives the push wheel 62 to move towards the direction approaching or far away from the fixed block 4, and then the fixing piece 63 is used for fixing the sliding block 61, so that the position of the push wheel 62 can be adjusted, and the size of the angle R of the flat wire bending can be adjusted. The applicability of the bending mechanism is improved, and the bending mechanism can bend flat wires with different wire diameters at R angles with different sizes.
Two slots 25 are formed in the turntable 7, two fixing pieces 63 are respectively arranged in the two slots 25 in a sliding mode along the vertical direction, bolts are arranged in the middle of the fixing pieces 63, penetrate through the fixing pieces 63 and are fixed in the turntable 7 in a threaded mode. In the present application, the fixing member 63 and the sliding block 61 may be wedge-shaped blocks, and the width of the fixing member 63 gradually decreases from top to bottom, and the width of the sliding block 61 gradually increases from top to bottom. The side wall of the slider 61 along the rotation direction of the turntable 7 is a first inclined wall 11, the side wall of the fixing piece 63 close to the slider 61 is a second inclined wall 12, the inclination angles of the first inclined wall 11 and the second inclined wall 12 are the same, and the first inclined wall 11 is attached to and abutted against the second inclined wall 12.
When the position of the push wheel 62 needs to be adjusted, the bolt loosening fixing piece 63 is rotated to release the first inclined wall 11 from the second inclined wall 12, and at this time, the sliding block 61 can slide in the first sliding groove 8, so that the position of the push wheel 62 can be adjusted; after the adjustment is completed, the bolt is turned so that the second inclined wall 12 of the fixing member 63 abuts against the first inclined wall 11 of the slider 61, thereby fixing the slider 61. This allows for stepless adjustment of the slider 61, and thus allows the bending mechanism to bend more R-angles of different sizes.
Two linear limit grooves 10 are symmetrically formed in the two sides of the top of the sliding block 61 along the width direction, two limit strips 9 are symmetrically formed in an integrated manner in two sides of the width direction of the opening end of the top of the first sliding groove 8, and the limit strips 9 are slidably arranged in the linear limit grooves 10 in an adaptive manner. When the sliding block 61 is adjusted, the sliding of the sliding block 61 is limited by the sliding fit of the two limiting strips 9 and the two linear limiting grooves 10, so that the push wheel 62 is adjusted more accurately. Meanwhile, when the push wheel 62 deforms in an extrusion mode, the two limit strips 9 are matched with the two linear limit grooves 10 to position the sliding block 61, so that the push wheel 62 is more stable, and the accuracy of the bent R angle of the flat wire is higher.
The implementation principle of the embodiment 1 of the application is as follows: the driving component 3 drives the turntable 7 to rotate, the turntable 7 drives the push wheel 62 to move through the sliding block 61 and bends the flat wire, and the 2D flat wire can be manufactured after bending for many times. When flat wires with different wire diameters are required to be bent, the bolts are rotated, the fixed block 4 is detached from the fixed seat 2, and the fixed block 4 is replaced, so that the width of the feed chute 5 in the fixed block 4 is matched with the wire diameter of the flat wire, and the bending mechanism can be suitable for bending the flat wires with different wire diameters; the sliding block 61 slides in the first chute 8 of the turntable 7, the sliding block 61 drives the push wheel 62 to move towards the direction approaching or far away from the fixed block 4, and then the fixing piece 63 is used for fixing the sliding block 61, so that the position of the push wheel 62 can be adjusted, and the size of the angle R of the flat wire bending can be adjusted. The applicability of the bending mechanism is improved, and the bending mechanism can bend flat wires with different wire diameters at R angles with different sizes.
Example 2:
referring to fig. 6 and 7, this embodiment is different from embodiment 1 in that a circular cover plate 18 is detachably and fixedly installed on the top wall of the fixed block 4 by bolts, and a second chute 27 is provided on the bottom wall of the cover plate 18 in a direction parallel to the feed chute 5 and located directly below the feed chute 5. The bottom of the cover plate 18 is positioned in the second chute 27, and is provided with a lifting plate 20 in a sliding manner along the vertical direction, and the lifting plate 20 is arranged along the length direction of the feed chute 5. An adjusting rod 21 is rotatably arranged in the middle of the top wall of the lifting plate 20 through a bearing, and the adjusting rod 21 passes through the cover plate 18 in a threaded manner and extends to the upper side of the cover plate 18. The lifting plate 20 can be driven to lift and slide in the second chute 27 by rotating the adjusting lever 21.
Four connecting plates 28 are formed on the bottom wall of the lifting plate 20 at equal intervals in an integrated manner, the bottom ends of the four connecting plates 28 extend into the feeding groove 5, the bottom ends of the connecting plates 28 are rotatably provided with pinch rollers 19, and the pinch rollers 19 are abutted against the top wall of the flat wire. In the flat wire bending process, the pinch roller 19 is used for limiting the flat wire in a butt joint mode, so that the flat wire is not prone to tilting, and the bending precision of the flat wire is improved.
The implementation principle of the embodiment 2 of the application is as follows: when the fixed block 4 needs to be replaced to be suitable for flat wires with different wire diameters, the cover plate 18 is detached from the original fixed block 4 and then is installed on the replaced fixed block 4, the adjusting rod 21 is rotated, the adjusting rod 21 drives the lifting plate 20 to lift, and the lifting plate 20 drives the pressing wheels 19 to lift together in the feeding groove 5, so that the pressing wheels 19 can be abutted against flat wires with different thicknesses.
Example 3:
referring to fig. 8, 9 and 10, this embodiment is different from embodiment 2 in that four pressing plates 22 are rotatably installed at equal intervals along the length direction of the feed chute 5 on the bottom wall of the cover plate 18, the pressing plates 22 are obliquely installed in the feed chute 5 along the flat wire entering direction, and four pressing wheels 19 are rotatably installed at the bottom ends of the four pressing plates 22, respectively. When the flat wire does not enter the feed chute 5, the pinch roller 19 is abutted against the bottom wall of the feed chute 5; when the flat wire enters the feed chute 5, the end of the flat wire pushes the pressing plate 22 to rotate upwards, and the pressing plate 22 drives the pressing wheel 19 to move upwards so that the pressing wheel 19 abuts against the top wall of the flat wire.
Referring to fig. 9 and 10, four first elastic members 23 are installed on the bottom wall of the cover plate 18 at equal intervals along the length direction of the feed chute 5, the four first elastic members 23 are in one-to-one correspondence with the four pressing plates 22, and two ends of the first elastic members 23 are fixedly connected with the rotating ends of the cover plate 18 and the pressing plates 22 respectively. In the present application, the first elastic member 23 may be a torsion spring. When the flat wire pushes the pressing plate 22 to rotate upwards, the pressing plate 22 drives the first elastic piece 23 to deform, and the first elastic piece 23 acts on the pressing wheel 19 through the pressing plate 22, so that the pressing wheel 19 has a downward movement trend and always abuts against the top wall of the flat wire. When the flat wire slides out of the feed chute 5, the first elastic piece 23 releases elastic potential energy and drives the pinch roller 19 to move downwards to abut against the bottom wall of the feed chute 5 through the pressure plate 22. So make pinch roller 19 can automatic butt spacing different thickness flat wire, need not to adjust pinch roller 19 position by the manual work again.
The pressing plate 22 is bent away from the bottom end of the cover plate 18 toward the flat wire entering direction and formed as an abutting plate 221, and when the flat wire pushes the pressing plate 22 to rotate upward, the abutting plate 221 approaches to a horizontal state. The bottom wall of the cover plate 18 is positioned above each abutting plate 221, the top end of the second elastic piece 24 is fixedly connected with the cover plate 18, and the abutting plates 221 move upwards and abut against the bottom ends of the second elastic pieces 24. In the present application, the second elastic member 24 may alternatively be a spring.
When the end of the flat wire pushes the pressing plate 22 to rotate upwards, the abutting plate 221 moves upwards to press the second elastic piece 24 and enable the second elastic piece 24 to shrink and deform, at this time, the first elastic piece 23 and the second elastic piece 24 act on the pressing plate 22 together, so that the pressing plate 22 drives the pressing wheel 19 to always abut against the flat wire, and further the abutting limiting effect of the pressing wheel 19 is better. And the abutting state of the abutting plate 221 approaching to the horizontal state and the second elastic member 24 is more stable.
Four mounting grooves 29 are formed in the bottom wall of the cover plate 18 at equal intervals along the length direction of the feed chute 5, and four second elastic pieces 24 are fixedly mounted in the four mounting grooves 29 respectively. An arc-shaped guide rod 30 is fixedly installed on the top wall of the abutting plate 221 along the rotation direction of the abutting plate, an arc-shaped guide groove 31 communicated with the installation groove 29 is formed in the middle of the bottom wall of the installation groove 29 of the cover plate 18, and the arc-shaped guide rod 30 penetrates through the second elastic piece 24 and is in sliding fit connection with the arc-shaped guide groove 31.
When the abutting plate 221 moves upwards, the arc-shaped guide rod 30 passes through the first elastic piece 23 and is in sliding connection with the arc-shaped guide groove 31 in a matched manner, the arc-shaped guide rod 30 and the arc-shaped guide groove 31 are matched to limit the movement of the abutting plate 221, so that the pressing plate 22 rotates more stably, and meanwhile, the arc-shaped guide rod 30 passes through the second elastic piece 24, and further, the second elastic piece 24 can be limited, so that the second elastic piece 24 contracts more stably.
Referring to fig. 8 and 9, two guide wheels 17 are installed on the bottom wall of the cover plate 18, two sliding grooves 32 are symmetrically formed in the bottom wall of the cover plate 18 along the width direction of the vertical feed chute 5, two sliding blocks 33 are slidably installed in the two sliding grooves 32 along the length direction of the vertical feed chute 5 in an adaptive manner, the cross sections of the sliding grooves 32 and the sliding blocks 33 are all T-shaped, and the rotation of the two guide wheels 17 is fixedly connected with the bottom walls of the two sliding blocks 33 respectively. The third elastic members 34 are installed in the two sliding grooves 32, one ends of the two third elastic members 34, which are close to each other, are respectively abutted against the two sliding blocks 33, and one ends of the two third elastic members 34, which are far away from each other, are respectively abutted against the side walls of the two sliding grooves 32, which are far away from each other. In the present application, the third elastic member 34 may be selected to be a spring.
When flat wires with different wire diameters are inserted into the feeding groove 5, the flat wires push the two guide wheels 17 to move in the direction away from each other, the guide wheels 17 drive the sliding blocks 33 to move in the sliding grooves 32, the sliding blocks 33 push the third elastic pieces 34 and enable the third elastic pieces to elastically contract, so that the two guide wheels 17 abut against two side walls of the width direction of the flat wires, and the guide wheels 17 can automatically guide the flat wires with different widths. And dismantle apron 18 can dismantle the guide pulley 17 from fixed block 4, when changing fixed block 4 of different width feed chute 5, guide pulley 17 still can be suitable for.
The implementation principle of the embodiment 3 of the application is as follows: when the fixed block 4 needs to be replaced to be suitable for flat wires with different wire diameters, the cover plate 18 is detached from the original fixed block 4 and then is installed on the replaced fixed block 4, when the flat wires enter the feed chute 5, the flat wires push the pressing plate 22 to rotate upwards, the pressing wheels 19 at the end parts of the pressing plate 22 are abutted to the tops of the flat wires, meanwhile, the first elastic piece 23 and the second elastic piece 24 act on the pressing plate 22 together, the pressing plate 22 drives the pressing wheels 19 to be abutted to the flat wires all the time, and then the pressing wheels 19 can be automatically abutted to the flat wires with different limiting thicknesses.
The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.