CN107639189B - Spring finishing device - Google Patents
Spring finishing device Download PDFInfo
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- CN107639189B CN107639189B CN201710841637.7A CN201710841637A CN107639189B CN 107639189 B CN107639189 B CN 107639189B CN 201710841637 A CN201710841637 A CN 201710841637A CN 107639189 B CN107639189 B CN 107639189B
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Abstract
The application relates to a spring finishing device, and belongs to the technical field of metal machinery for processing or treating spring wires manufactured by wires without cutting basically. The wire feeding device comprises a wire rod wheel, a straightening mechanism, a reduction gearbox, a plurality of groups of wire feeding wheels, core cutters, cutters and a plurality of annularly arranged ejector rods, wherein the wire rod wheel, the straightening mechanism, the reduction gearbox, the groups of wire feeding wheels, the core cutters and the plurality of annularly arranged ejector rods are sequentially arranged along the wire feeding direction, the wire rod wheel is used for supplying a steel wire to be processed, and the straightening mechanism comprises a pair of preset wheels, a pair of grooved wheels and a pair of rotating shafts; the straightened steel wire is sent into a reduction gearbox and is sent out through a wire feeding wheel in the reduction gearbox, the steel wire after straightening is sent between the ejector rods distributed in an annular mode, and the cutter and the core cutter are located above the ejector rods. The application is applied to spring processing and has the advantages of stable central line, smooth wire feeding and the like.
Description
Technical Field
The application relates to a spring finishing device, and belongs to the technical field of metal machinery for processing or treating spring wires manufactured by wires without cutting basically.
Background
The spring is occasion such as mattress processing, spring machinery, hardware electrical apparatus, to ordinary apparatus, the machining precision requirement of spring is not high, however, along with the consumer is to using travelling comfort (such as mattress etc.), installation stability (such as spring machinery), machining precision (such as hardware electrical apparatus etc.) requirement is higher and higher, especially the tiny wire rod below 0.5mm, ordinary processing equipment very produces the wire rod and draws unevenly, produces phenomenon such as shake, leads to this wire rod unable stable transport, send line length inhomogeneous, makes in the in-process of processing spring, reduces the precision of spring because the unstable of wire rod.
The spring processing process is mainly summarized as follows: the steel wire is sent out from a wire feeding frame, straightened, primarily stretched, sent into a coil spring procedure, coiled, cut off to form a rough spring blank, and then post-treated to finish the spring processing. In the straightening process, two rollers are used as straightening elements in contact with the steel wire in a conventional mode, and the steel wire with different diameters is machined in the mode, however, the center position is easy to change due to the fact that one of the two rollers moves to a certain extent and the position of a single side is changed, so that the phenomenon that the straightening degrees of two sides of the steel wire are different in the straightening process is caused, and the machining precision is seriously reduced. In the wire feeding process, a common speed change structure with double gear spline sliding is adopted, so that the defects of unstable transmission, high noise and the like of spline sliding are overcome; in the spring forming stage, the supporting and cutting are carried out by means of the movement of the core knife, the conventional core knife is fixedly locked by a screw or a spiral screw rod, and at the moment of cutting a steel wire, the impact force of the cutter on the core knife is large, so that the core knife is easy to loose and fall, and the control is not precise; the core pulling cannot be locked, and the locking cannot be used for pulling the core.
Based on this, the present application has been made.
Disclosure of Invention
Aiming at the defects existing in the existing spring processing, the application provides the spring finishing device which can realize bidirectional distance adjustment, stable central line and smooth wire feeding.
In order to achieve the above purpose, the technical scheme adopted by the application is as follows:
the spring finishing device is sequentially provided with a wire rod wheel, a straightening mechanism, a reduction gearbox, a plurality of groups of wire feeding wheels, a core knife, a cutter and a plurality of annularly arranged ejector rods, wherein the wire rod wheel is used for supplying a steel wire to be processed; the pair of grooved wheels are arranged on a group of straightening bearing seats, a channel which allows steel wires fed by the wire rod wheels to pass through is reserved between the two grooved wheels, the channel corresponds to the pre-feeding groove and comprises a front groove and a rear groove, the front groove and the rear groove are separated by the central connecting line of the two grooved wheels, the pre-feeding groove, the front groove and the rear groove are positioned on the same central line, and the pre-feeding groove, the front groove and the rear groove are sequentially arranged and communicated; the pair of rotating shafts respectively prop against the outer sides of the pair of straightening bearing seats, are linked rotating shafts and are respectively used for controlling the movement of grooved wheels in the straightening bearing seats so as to meet the processing requirements of different steel wire diameters; the steel wire after the alignment mechanism alignment is sent into the reducing gear box to send out through the wire feeding wheel in the reducing gear box, send to between the ejector pins of cyclic annular distribution along the steel wire after the alignment, each ejector pin is along its length direction's axial to do flexible removal, make it form the steel ring with changing the steel wire trend, cutter and core sword all are located the ejector pin top, and the core sword is located the cyclic annular structure outside that the ejector pin formed, its oscilaltion, in order to support the shaping and go out the steel ring of ejector pin, the cutter is done the oscilaltion, and cuts off the steel ring under the cooperation of core sword and form the spring.
Further, as preferable:
the pair of rotating shafts respectively correspond to the first driven shaft and the second driven shaft, the first driven shaft and the second driven shaft are respectively connected with the same driving shaft in a meshed mode, and the driving shafts rotate to drive the first driven shaft and the second driven shaft to rotate, so that linkage of the pair of rotating shafts is achieved. The driving shaft is provided with a driving gear, the driven shaft is provided with a driven gear I, the driven shaft is provided with a driven gear II, the driven gear I and the driven gear II are respectively arranged on two sides of the driving gear, the driven gear I is meshed with the driving gear, namely, the driven shaft I is meshed with the driving shaft, namely, the driven gear II is meshed with the driving gear, namely, the driven shaft II is meshed with the driving shaft, the driven shaft I and the driven shaft II are both connected with the driving shaft, the driving shaft is driven to rotate under the driving of a motor, namely, the driven shaft I and the driven shaft II are driven to be linked with each other, synchronous movement of two rotating shafts is well realized, and then corresponding grooved wheels are driven to synchronously shift, so that the stability of the central line position between the two grooved wheels is ensured.
The grooved pulley is a V-shaped grooved pulley, and the center of the grooved pulley is inwards recessed to form the steel wire running track.
In the channel structure, the front groove and the rear groove have the same or different widths, more preferably, the front groove and the rear groove have different widths, the front groove is a square groove with the same and uniform width, and the rear groove is of a horn-shaped and gradually increased width structure. The front groove is different from the rear groove in width, and the rear groove is of a horn mouth-shaped outward-releasing structure, so that after the steel wire is straightened by the grooved wheels, the rear groove provides a buffer space for the steel wire, and deformation recovery and pressure relief of the steel wire are allowed.
The pair of straightening bearing seats are arranged in the seat sleeve, a calibration spring is arranged between the two straightening bearing seats, and the calibration spring is positioned at the bottom of the channel. When the displacement of the two straightening bearing seats is inconsistent, the straightening bearing seats on two sides of the two straightening bearing seats are buffered and reacted by the calibrating springs positioned between the two straightening bearing seats, so that the central line positions of the two grooved wheels are ensured to be basically kept at the fixed positions.
The inner side of the straightening bearing seat is provided with a matching groove, and the matching groove is internally provided with a straightening spring for adjusting the position between the two straightening bearing seats and resetting the two straightening bearing seats under the action of no external force.
The outer side of the straightening bearing seat is provided with an arc-shaped convex structure, the convex structure is consistent with the bending direction of the grooved pulley, and the shaft head of the rotating shaft is correspondingly arranged at the outer side of the convex structure. The convex structure is matched with the shaft head, so that the displacement of the rotating shaft is quickly converted into the movement of the straightening bearing seat.
The pair of rotating shafts can adopt adjusting bolts.
In the straightening process, two linkage rotating shafts are respectively arranged in two independent straightening bearing seats, so that the two V-shaped grooved wheels are adjusted in the horizontal direction according to different wire diameters under the action of the two rotating shafts, and the purpose of conveying wires with different wire diameters at required horizontal positions is achieved; meanwhile, the two straightening bearing seats are respectively adjusted, and the arrangement of the pair of rotating shaft structures thoroughly solves the defects that the upper and lower pressing line diameter central lines in the traditional structure are unstable up and down and the line feeding is not smooth.
The speed reduction box comprises a box body, an input shaft, an output shaft, a hand wheel and a speed change screw rod, wherein the input shaft and the output shaft are respectively arranged on the box body, a plurality of transmission gears and a plurality of input gears are arranged on the input shaft, a plurality of output gears are arranged on the output shaft, the transmission gears are meshed with the wire feeding gears, and the input gears are meshed with the output gears, so that the power is transmitted from the wire feeding gears to the transmission gears to the input shaft to the input gears to the output shafts; the input shaft end set up the variable speed lead screw, the variable speed lead screw passes through the hand wheel drive, the input shaft sets up slide bearing with the box junction, the hand wheel rotates the work of drive variable speed lead screw, the variable speed lead screw drives the input shaft and slides along slide bearing, input gear and output gear hookup location change realizes the spline-free conversion of different speeds promptly.
More preferably:
the input shaft is provided with two transmission gears, namely a transmission gear I and a transmission gear II, and the transmission gear I and the transmission gear II are respectively meshed with the wire feeding gear to realize different transmission paths; and two input gears, namely a first input gear and a second input gear, wherein the first input gear and the second input gear have different numbers of teeth, and the first input gear and the second input gear are respectively meshed with the output gear so as to realize power transmission with different paths and different transmission ratios. The arrangement of the plurality of transmission gears and the plurality of input gears facilitates the requirements of different power transmission environments in the spring processing process, and the processing is more flexible.
The output shaft is provided with two output gears, namely a first output gear and a second output gear, and the number of teeth of the first output gear is different from that of the second output gear so as to realize the output of power with different transmission ratios. The first output gear and the second output gear are respectively meshed and connected with the input gear, so that transmission at different speeds is realized.
The rolling bearing is arranged between the sliding bearing and the box body, so that the resistance in the sliding process is reduced, and the sliding efficiency of the input shaft is improved.
In the wire feeding process, a hand wheel is rotated, the hand wheel drives an input shaft to move left and right through a screw rod, namely, the engagement of different input gears and different output gears is realized, after the transmission ratio is determined, equipment is started, power is transmitted through the transmission gears, and the power is transmitted through the output gears and the output shafts; when the speed needs to be changed, the hand wheel is rotated, the hand wheel drives the input shaft to move left and right through the screw rod, so that the meshing position of the input gear and the output gear is changed, the speed is changed through the change of the transmission ratio, and compared with the traditional spline sliding mode, the speed reducing gear box has the advantages that the transmission unstable spline sliding is changed into the optical axis sliding, the transmission stability and the rigidity of the speed reducing gear box are both greatly improved, and the noise is obviously reduced compared with the traditional speed reducing gear box.
The wire feeding wheel is arranged on a wheel shaft, an inner stepped groove and an outer stepped groove are formed in the wheel shaft, the wire feeding wheel is sleeved on the wheel shaft through the outer stepped groove, a taper sleeve is sleeved on the inner stepped groove, and the taper sleeve is positioned on the inner side of the wire feeding wheel.
More preferably:
the inner stepped groove is a trapezoid groove, the inner side of the inner stepped groove is of an inclined surface structure, and the taper sleeve is sleeved on the wheel shaft through the inner stepped groove; the outside stepped groove is a square groove, and the wire feeding wheel is sleeved outside the wheel shaft and the taper sleeve through the outside stepped groove.
The wire feeding wheel and the wheel shaft are fixed by a first fastening bolt along the axial direction, and the taper sleeve and the wheel shaft are fixed by a second fastening bolt along the axial direction. The wire feeding wheel and the taper sleeve can be fixed in the horizontal direction (i.e. the direction perpendicular to the axial direction) by means of the step groove and the mutual dislocation between the wire feeding wheel and the wheel shaft, the wire feeding wheel and the taper sleeve, and the taper sleeve and the wheel shaft, and no force points exist along the axial direction, so that the wire feeding wheel and the taper sleeve can be fixed by means of fastening bolts.
The bottom of the inner step groove is provided with a buffer groove, when the buffer groove is installed, the inclined plane of the taper sleeve is consistent with the inclined plane of the inner step groove, a buffer cavity is formed between the bottom of the buffer groove and the buffer groove, and in the high-speed running process of the wheel shaft, the square buffer groove is favorable for buffering the extrusion effect of the rotating centripetal force on the taper sleeve and the wire feeding wheel, so that the use stability is better.
In the high-speed running of the wheel axle, the wheel axle drives the wire feeding wheel and the taper sleeve fixed on the wheel axle to synchronously rotate along with the wheel axle, and power is transmitted by means of the wire feeding wheel, in the process, the center of the wheel axle is isolated from the wire feeding wheel by the taper sleeve, and the rotating acting force is transferred to the taper sleeve, so that abrasion mainly occurs on the taper sleeve, the abrasion of the wire feeding wheel is weakened, when the abrasion is serious, only the taper sleeve needs to be replaced, the precision requirement of the taper sleeve is low, the processing cost is low, compared with the replacement of the whole wire feeding wheel, the replacement is more convenient, the cost is lower, and the service lives of the wire feeding wheel and the wheel axle are prolonged; simultaneously, owing to the setting of inboard ladder groove and the inboard inclined plane of taper sleeve, in rotatory in-process, the improvement centripetal force that can be fine plays the effect of compressing tightly, and the horizontal direction only is with the help of the cooperation of the inclined plane of taper sleeve and inboard ladder groove, can realize the fastening of horizontal direction, and wire feeding wheel, shaft, taper sleeve realize gapless connection each other, have improved the stability of sending the line to guaranteed high-quality spring coiling.
The core knife is arranged on the bracket, the side edge of the core knife is embedded with a locking stopper, and an inclined plane is arranged on one side, far away from the core knife, of the locking stopper; the bracket is provided with a first rotating shaft and a second rotating shaft, the first rotating shaft is provided with a locking connecting rod, the middle part of the locking connecting rod is connected with a locking stopper, and the other end of the locking connecting rod is connected with the output end of the oil cylinder; a synchronous connecting rod is arranged on the second rotating shaft, and the other end of the synchronous connecting rod is connected with a locking stopper; the oil cylinder drives the locking connecting rod to swing, the locking connecting rod and the synchronous connecting rod form synchronous two-stage linkage through the support and the locking cock iron, and the core knife and the locking cock iron are driven to move through the support and the locking cock iron.
More preferably:
the ejector rod comprises an ejector rod I and an ejector rod II, the ejector rod I is horizontally arranged on a steel wire travelling route, the ejector rod II is arranged above the ejector rod I and is concentric with the ejector rod, the ejector rod I and the ejector rod II are driven by the same power or different powers respectively, and the ejector rod I and the ejector rod II can be driven by the power of an oil cylinder, an air cylinder, a cam (such as a variable diameter cam) and the like to move along the diameter direction of a circle so as to change the size of the steel wire when the steel wire is converted into a steel ring. The ejector rod is a main deformation element for forming a spiral or annular steel ring by steel wires and then converting the steel wire into a spring, the ejector rod I and the ejector rod II are matched with each other, the horizontally input steel wire meets the ejector rod I, under the action of the resistance of the ejector rod I, the ejector rod II is met in the upward moving process, under the action of the resistance of the ejector rod II, the steel ring is formed by bending the ejector rod II again in the forward direction, when the length of the steel ring reaches a set specification, the core knife falls down, the supporting steel ring is temporarily fixed, the cutter falls down, and the steel ring is cut off to form the spring with the set length.
The support and the core knife are both positioned on the cushion block, the locking stopper is positioned on the opposite side of the cushion block, and the cushion block is matched with the locking stopper to fix the core knife between the support and the core knife. The core knife is arranged between the locking cock iron and the cushion block, and when the synchronous two-stage linkage formed by the locking connecting rod and the synchronous connecting rod is started, the locking cock iron and the cushion block are driven to synchronously move, so that the arc synchronous horizontal tightness is shown by the fact that the connecting position of the locking cock iron, the core knife and the cushion block relative to the upper end of the locking connecting rod is the circle center.
The output end of the oil cylinder is provided with a push rod which is connected with the locking connecting rod shaft. The oil cylinder is used as a power output unit and provides a movable kinetic energy source for the locking connecting rod, and the horizontal movement of the push rod can be directly converted into the swing of the locking connecting rod through the shaft connection of the push rod and the locking connecting rod, so that the arrangement of the spatial positions of all workpieces is facilitated, and the efficient transmission is facilitated.
And a first connecting shaft is arranged between the locking connecting rod and the locking cock iron, and a second connecting shaft is arranged between the synchronous connecting rod and the locking cock iron. The locking connecting rod, the synchronous connecting rod and the locking stopper are connected through the shaft, so that the stability of the transmission process is facilitated, the transmission stagnation caused by hard connection is avoided, and the flexibility of the transmission process is improved.
The first rotating shaft and the second rotating shaft penetrate through the support and are connected with the cushion block. The core knife, the support and the cushion block are sequentially arranged, the locking cock iron is arranged in parallel with the cushion block, and the first rotating shaft and the second rotating shaft are arranged, so that a rotating fulcrum is provided for the locking connecting rod and the synchronous connecting rod, the cooperation of the cushion block and the locking cock iron is realized, and synchronous movement is ensured.
The ejector rod is a main deformation element for forming a spiral or annular steel ring by steel wires and then converting the steel wire into a spring, the ejector rod I and the ejector rod II are matched with each other, the horizontally input steel wire meets the ejector rod I, under the action of the resistance of the ejector rod I, the ejector rod II is met in the upward moving process, under the action of the resistance of the ejector rod II, the steel ring is formed by bending the ejector rod II again in the forward direction, when the length of the steel ring reaches a set specification, the core knife falls down, the supporting steel ring is temporarily fixed, the cutter falls down, and the steel ring is cut off to form the spring with the set length. The oil cylinder drives the locking connecting rod to swing left and right through the extension and retraction of the push rod, and because the middle part of the locking connecting rod and the upper end of the synchronous connecting rod are connected with the locking cock iron shaft (namely the first connecting shaft and the second connecting shaft), the lower end of the locking connecting rod and the lower end of the synchronous connecting rod are connected with the bracket and the cushion block shaft (namely the first rotating shaft and the second rotating shaft); meanwhile, the cushion blocks and the locking stopper are respectively arranged at two sides of the core knife, and the upper inclined surface of the locking stopper can be tightly pressed in the stress process, so that the installation stability is improved.
Drawings
FIG. 1 is a side view of the present application;
fig. 2 is an enlarged view of a portion of a wire feeding portion according to the present application;
FIG. 3 is a side view of a straightening mechanism in a wire feeding portion of the present application;
FIG. 4 is a cross-sectional view taken along the direction A-A in FIG. 3;
FIG. 5 is an enlarged view of a portion of a bearing housing of a straightening mechanism in a wire feeding portion of the present application;
FIG. 6 is an enlarged view of a portion of another construction of a bearing housing of the straightening mechanism in a wire feeding portion according to the present application;
FIG. 7 is a schematic diagram of the structure of the reduction gearbox according to the present application;
FIG. 8 is a schematic view of another state of the reduction gearbox according to the present application;
fig. 9 is a schematic view of a wire feeding wheel according to the present application;
fig. 10 is a schematic structural view of a wire feeding wheel shaft in the present application;
FIG. 11 is an enlarged view of a portion of the present application;
fig. 12 is a schematic view of the assembly of the core cutter of the present application.
Reference numerals in the drawings: 1. a wire wheel; 2. a straightening mechanism; 21. a predetermined wheel; 211. pre-bearing seat; 21a, a pre-feeding groove; 22. a sheave; 221. straightening a bearing seat; 2211. an inner side; 2212. an outer side; 2213. a groove is formed; 222. a seat cover; 22a, front groove; 22b, rear groove; 23. a rotating shaft; 231. a shaft head; 24. a driving shaft; 241. a drive gear; 25. a driven shaft I; 251. a driven gear I; 26. a driven shaft II; 261. a driven gear II; 27. calibrating the spring; 3. a reduction gearbox; 31. a case; 31a, a containing cavity; 32. an input shaft; 321. a first transmission gear; 322. a second transmission gear; 323. an input gear I; 324. an input gear II; 33. an output shaft; 331. an output gear I; 332. an output gear II; 34. a hand wheel; 35. a variable speed screw rod; 36. a sliding bearing; 37. a rolling bearing; 38. fastening and capping; 39. positioning and capping; 4. wire feeding wheels; 41. a wheel axle; 411. an outer stepped groove; 412. an inner stepped groove; 413. a first bolt hole; 414. a second bolt hole; 415. a buffer tank; 42. fastening a first bolt; 43. a taper sleeve; 431. an inclined plane; 44. fastening a second bolt; 45. a buffer chamber; 5. a push rod; 51. a first ejector rod; 52. a second ejector rod; 6. a core cutter; 61. a bracket; 62. a cushion block; 63. locking the stopper; 631. an inclined plane; 7. a cutter; 8. locking the connecting rod; 81. a first rotating shaft; 82. a first connecting shaft; 83. an oil cylinder; 831. a push rod; 9. a synchronous connecting rod; 91. a second rotating shaft; 92. and a second connecting shaft.
Detailed Description
Example 1
In the spring finishing device of the embodiment, in combination with fig. 1, a wire rod wheel 1, a straightening mechanism 2, a reduction gearbox 3, a plurality of groups of wire feeding wheels 4 positioned in the reduction gearbox 3, a core knife 6, a cutter 7 and a plurality of annularly arranged 5 ejector rods are sequentially arranged, a wire rod raw material to be processed is wound on the wire rod wheel 1, the wire rod wheel 1 rotates, and the wire rod is fed into the straightening mechanism 2; when the wire is fed into the straightening mechanism 2, referring to fig. 2 to 4, the straightening mechanism 2 includes a pair of predetermined wheels 21, a pair of sheaves 22 and a pair of rotating shafts 23, the pair of predetermined wheels 21 are mounted on a set of pre-bearing seats 211, and a pre-feeding groove 21a for allowing the wire fed from the wire wheel 1 to pass through is left between the upper and lower predetermined wheels 21; a pair of sheaves 22 are mounted on a set of straightening bearing seats 221, a channel for allowing the steel wire fed by the wire wheel 1 to pass through is reserved between the upper sheave 2 and the lower sheave 2, the channel corresponds to a pre-feeding groove 21a, the channel comprises a front groove 22a and a rear groove 22b, the front groove 22a and the rear groove 22b are separated by a vertical central connecting line of the two sheaves 22, the pre-feeding groove 21a, the front groove 22a and the rear groove 22b are positioned on the same central line, and the pre-feeding groove 21a, the front groove 22a and the rear groove 22b are sequentially arranged and communicated; a pair of rotating shafts 23 respectively prop against the outer sides of a pair of straightening bearing seats 221, the pair of rotating shafts 23 are linked rotating shafts respectively used for controlling the movement of grooved wheels 22 in each straightening bearing seat 221 so as to adapt to the processing requirements of different steel wire diameters; the steel wire straightened by the straightening mechanism 2 is sent into the reduction gearbox 3 and is sent out through a wire feeding wheel 4 in the reduction gearbox 3; with reference to fig. 11, the straightened steel wires are sent between the ejector rods 5 distributed in a ring shape, each ejector rod 5 stretches and contracts along the axial direction of the length direction of the steel wires to change the trend of the steel wires to form a steel ring, the cutter 7 and the core cutter 6 are located above the ejector rods 5, the core cutter 6 is located outside the ring-shaped structure formed by the ejector rods 5 and is lifted up and down to support the steel ring formed and output the ejector rods 5, the cutter 7 moves up and down to cut the steel ring to form a spring under the cooperation of the core cutter 7.
In order to achieve better use effect, the straightening mechanism in the above scheme can be further set as follows:
referring to fig. 4, a pair of rotating shafts 23 respectively correspond to a first driven shaft 25 and a second driven shaft 26, the first driven shaft 25 and the second driven shaft 26 are respectively connected with the same driving shaft 24 in a meshed manner, and the driving shaft 24 rotates to drive the first driven shaft 25 and the second driven shaft 26 to rotate, so that linkage of the pair of rotating shafts 23 is realized. The driving shaft 24 is provided with a driving gear 241, the driven shaft 25 is provided with a driven gear 251, the driven shaft 26 is provided with a driven gear 261, the driven gear 251 and the driven gear 261 are respectively arranged on two sides of the driving gear 241, the driven gear 251 is meshed with the driving gear 241, namely, the meshed connection of the driven shaft 25 and the driving shaft 24 is realized, the driven gear 261 is meshed with the driving gear 241, namely, the meshed connection of the driven shaft 26 and the driving shaft 24 is realized, the driven shaft 25 and the driven shaft 26 are connected with the driving shaft 24, the driving shaft 24 is driven to rotate under the driving of a motor, namely, the driven shaft 25 and the driven shaft 26 are driven to be linked together, the synchronous movement of the two rotating shafts 23 is realized well, the corresponding grooved wheels 22 are driven to synchronously shift, and the stability of the central line position between the two grooved wheels 22 is ensured.
In order to achieve better use effect, the straightening mechanism in the above scheme can be further set as follows:
the sheave 22 is a V-shaped sheave, and the center of the sheave 22 is recessed inward, i.e., a wire running track is formed.
In order to achieve better use effect, the above scheme is more preferably set as follows: referring to fig. 5, the front grooves 22a and the rear grooves 22b have different widths, and the front grooves 22a are square grooves having uniform and same widths, and the rear grooves 22b have a horn-shaped, increasing width structure. The front groove 22a and the rear groove 22b have different widths, and the rear groove 22b has a bell-mouth-shaped outward-releasing structure, so that the rear groove 22b provides a buffer space for the steel wire after the steel wire is straightened by the pair of grooved wheels 22, and allows the deformation recovery and pressure relief of the steel wire.
The channel structure may also have the front and rear grooves 22a, 22b set to be the same width. More preferably, the channel structure is further provided with a calibration spring 27, and two ends of the calibration spring 27 are respectively connected with two calibration bearing seats 221 adjacent to the calibration spring. When the displacement of the two alignment bearing seats 221 is inconsistent, the alignment springs 27 positioned between the two alignment bearing seats 221 buffer and react the alignment bearing seats 221 at the two sides of the alignment bearing seats, so that the central line positions of the two grooved wheels 22 are ensured to be basically kept at fixed positions; and resets the aligning bearing seat 221 when the rotation shaft 23 is removed.
In order to achieve better use effect, the straightening mechanism in the above scheme can be further set as follows:
referring to fig. 4, a pair of alignment bearing seats 221 are installed in a sleeve 222 with an alignment spring 27 disposed between the two alignment bearing seats 221, and the alignment spring 27 is located at the bottom of the passage. When the displacement of the two alignment bearing blocks 221 is inconsistent, the alignment springs 27 located between the two alignment bearing blocks 221 buffer and react to the alignment bearing blocks 221 on both sides thereof, so as to ensure that the center line position of the two sheaves 22 is basically kept at a fixed position.
In order to achieve better use effect, the straightening mechanism in the above scheme can be further set as follows:
referring to fig. 5, a mating groove 2213 is provided inside the alignment bearing seat 221, and an alignment spring 27 is provided in the mating groove 2213 to adjust the position between the two alignment bearing seats 221 and reset them when no external force is applied.
In order to achieve better use effect, the straightening mechanism in the above scheme can be further set as follows:
referring to fig. 6, an outer side 2211 of the aligning bearing seat 221 is provided with an arc-shaped convex structure, which is consistent with the bending direction of the sheave 22, and a shaft head 231 of the rotating shaft 23 is correspondingly installed at the outer side of the convex structure. The convex structure is matched with the shaft head 231, so that the displacement of the rotating shaft 23 is quickly converted into the movement of the straightening bearing seat.
In the alignment structure, the rotation shafts 23 may each employ an adjusting bolt.
The straightening structure is respectively arranged in two independent straightening bearing seats 221 through two linkage rotating shafts 23, so that the two V-shaped grooved wheels 22 are adjusted in the horizontal direction according to different wire diameters under the action of the two rotating shafts 23, and the purpose of conveying wires with different wire diameters at required horizontal positions is achieved; meanwhile, the two straightening bearing seats 221 are respectively adjusted, and the arrangement of the structure of the pair of rotating shafts 23 thoroughly solves the defects of unstable upper and lower pressing line diameter central lines and unsmooth line feeding in the traditional structure.
The wire rod is sent into reducing gear box 3 after the alignment, wherein, in traditional send line process, adopts the common variable speed structure of duplex gear spline slip generally, has the unstable spline slip of transmission, and the noise is great.
In this embodiment, referring to fig. 7, the reduction gearbox 3 includes a box 31, an input shaft 32, an output shaft 33, a hand wheel 34 and a variable speed screw 35, a receiving cavity 31a is formed in the box 31, the input shaft 32 and the output shaft 33 are respectively mounted on the box 31, a plurality of transmission gears and a plurality of input gears are disposed on the input shaft 32, a plurality of output gears are disposed on the output shaft 33, the transmission gears are meshed with a wire feeding gear (not shown in the figure) of the wire feeding wheel 4, and the input gears are meshed with the output gears, so that power is transmitted from the wire feeding wheel 4, the wire feeding gear, the transmission gears, the input shaft 32, the input gears, the output gears and the output shaft 33; the shaft end of the input shaft 32 is provided with a speed change screw rod 35, the speed change screw rod 35 is driven by a hand wheel 34, a sliding bearing 36 is arranged at the joint of the input shaft 32 and the box 31, the hand wheel 34 rotates to drive the speed change screw rod 35 to work, the speed change screw rod 35 drives the input shaft 32 to slide relative to the box 31 along the sliding bearing 36, and the connection position of an input gear and an output gear is changed, namely spline-free conversion at different speeds is realized.
In order to achieve better use effect, the reduction gearbox 3 in the above scheme may be further set as follows:
the input shaft 32 is provided with two transmission gears, namely a transmission gear I321 and a transmission gear II 322, and the transmission gear I321 and the transmission gear II 322 are independently meshed with the wire feeding gear so as to realize different transmission paths; and two input gears, namely an input gear one 323 and an input gear two 324, wherein the number of teeth of the input gear one 323 is different from that of the input gear two 324, and the input gear one 323 and the input gear two 324 are respectively meshed with the output gears so as to realize power transmission with different paths and different transmission ratios. The arrangement of the plurality of transmission gears and the plurality of input gears facilitates the requirements of different power transmission environments in the spring processing process, and the processing is more flexible.
In order to achieve better use effect, the reduction gearbox 3 in the above scheme may be further set as follows:
the output shaft 33 is provided with two output gears, namely a first output gear 331 and a second output gear 332, and the number of teeth of the first output gear 331 is different from that of the second output gear 332 so as to realize the output of power with different transmission ratios. The first output gear 331 and the second output gear 332 are respectively meshed with the input gears, that is, the transmission at different speeds is realized.
In order to achieve better use effect, the reduction gearbox 3 in the above scheme may be further set as follows:
a rolling bearing 37 is arranged between the sliding bearing 36 and the box 31 to reduce the resistance in the sliding process and improve the sliding efficiency of the input shaft. Further, a fastening cap 38 may be provided outside the rolling bearing, and a positioning cap 39 may be provided at the connection between the hand wheel 34 and the shift screw 35 to ensure the stability of installation.
In the wire feeding process, the hand wheel 34 is rotated, the hand wheel 34 drives the input shaft 32 to move leftwards through the variable speed screw rod 35, as in fig. 7, the difference of the number of teeth of the input gear two 324 and the output gear two 332 is smaller, and correspondingly, the transmission is smaller at the moment, so that low-speed operation can be realized; after the transmission ratio is determined, the equipment is started, the wire feeding wheel 4 and the corresponding wire feeding gear rotate, the wire feeding gear is meshed with the transmission gear, power is transmitted through the transmission gear, and the power is transmitted through the output gear and the output shaft 33; when the speed needs to be changed, the hand wheel 34 is rotated, and the hand wheel 34 drives the input shaft 32 to move rightwards through the variable speed screw rod 35, namely, as shown in fig. 8, the input gear two 324 is separated from the output gear two 332, the input gear one 323 is meshed with the output gear one 331, the number of teeth of the input gear one 323 and the output gear one 331 is greatly different, correspondingly, the transmission is relatively large at the moment, and high-speed operation can be realized. Compared with the traditional spline sliding mode, the reduction gearbox 3 of the embodiment enables the transmission unstable spline sliding to be changed into optical axis sliding, the transmission stability and rigidity of the reduction gearbox 3 are greatly improved, and noise is obviously reduced compared with the traditional reduction gearbox.
Referring to fig. 9, the wire feeding wheel 4 is installed in the reduction gearbox 3 through the wheel shaft 41, wherein an inner stepped groove 412 and an outer stepped groove 411 are formed in the wheel shaft 41, the wire feeding wheel 4 is sleeved on the wheel shaft 41 through the outer stepped groove 411, a taper sleeve 43 is sleeved on the inner stepped groove 412, and the taper sleeve 43 is located on the inner side of the wire feeding wheel 4.
In order to achieve better use effect, the axle 41 in the above scheme may be further provided as follows:
referring to fig. 10, the inner stepped groove 412 is a trapezoid groove, and the inner side is a slant structure, and the taper sleeve 43 is sleeved on the axle 41 through the inner stepped groove 412; the outer stepped slot 411 is a square slot, and the wire feeding wheel 4 is sleeved outside the wheel shaft 41 and the taper sleeve 43 through the outer stepped slot 411.
In order to achieve better use effect, the axle 41 in the above scheme may be further provided as follows:
the wire feeding wheel 4 and the wheel shaft 41 are fixed by a first fastening bolt 42 along the axial direction, and the taper sleeve 43 and the wheel shaft 41 are fixed by a second fastening bolt 44 along the axial direction. More preferably, a first bolt hole 413 is provided on the axle 41 at a position corresponding to the first fastening bolt 42, and a second bolt hole 414 is provided at a position corresponding to the second fastening bolt 44, so as to facilitate the installation of the first fastening bolt 42 and the second fastening bolt 44. The wire feeding wheel 4 and the taper sleeve 43 can be fixed in the horizontal direction (i.e. the direction perpendicular to the axial direction) by means of the stepped groove and the mutual dislocation between the wire feeding wheel 4 and the wheel shaft 41, the wire feeding wheel 4 and the taper sleeve 43, and the taper sleeve 43 and the wheel shaft 41, and no force point exists along the axial direction, so that the wire feeding wheel is fixed by means of a fastening bolt.
In order to achieve better use effect, the axle 41 in the above scheme may be further provided as follows:
the buffer slot 415 is arranged at the bottom of the inner step slot 412, when the buffer slot 415 is installed, the inclined plane 431 of the taper sleeve 43 is consistent with the inclined plane of the inner step slot 412, a buffer cavity 45 is formed between the bottom and the buffer slot 415, and in the high-speed running process of the wheel shaft 41, the existence of the buffer cavity 45 is favorable for buffering the extrusion effect of the rotating centripetal force on the taper sleeve 43 and the wire feeding wheel 4, so that the use stability is better.
In the process of feeding wire, in the high-speed operation of the wheel shaft 41, the wheel shaft 41 drives the wire feeding wheel 4 and the taper sleeve 43 fixed on the wheel shaft 41 to synchronously rotate along with the wheel shaft, and power is transmitted by means of a wheel groove on the outer surface of the wire feeding wheel 4, in the process, the center of the wheel shaft 41 and the wire feeding wheel 4 are isolated by the taper sleeve 43, and rotating acting force is transferred to the taper sleeve 43, so that abrasion mainly occurs on the taper sleeve 43, and the abrasion of the wire feeding wheel 4 is weakened, when the abrasion is serious, only the taper sleeve 43 needs to be replaced, the precision requirement of the taper sleeve 43 is low, the machining cost is low, and compared with the replacement of the whole wire feeding wheel 4, the replacement is more convenient, the cost is lower, and the service life of the wire feeding wheel 4 is prolonged; meanwhile, due to the arrangement of the inner stepped groove 412 and the inner inclined surface 431 of the taper sleeve 43, the centripetal force can be well improved in the rotating process, and the compacting effect is achieved, so that the fastening in the horizontal direction can be realized only by means of the matching of the inclined surfaces of the taper sleeve 43 and the inner stepped groove 412.
In order to achieve better use effect, the core knife 6 in the above scheme may be further set as follows:
referring to fig. 12, the core knife 6 is mounted on the bracket 61, the locking stopper 63 is embedded at the side of the core knife 6, and an inclined surface 631 is arranged at the side of the locking stopper 63 away from the core knife 6; the bracket 61 is provided with a first rotating shaft 81 and a second rotating shaft 91, one end of the locking connecting rod 8 is connected with the bracket 61 through the first rotating shaft 81, the middle part is connected with the locking cock iron 63, and the other end is connected with the output end of the oil cylinder 83; one end of the synchronous connecting rod 9 is connected with the bracket 61 through the second rotating shaft 91, and the other end is connected with the locking stopper 63; the locking connecting rod 8 is driven to swing by the oil cylinder 83, the locking connecting rod 8 and the synchronous connecting rod 9 form synchronous two-stage linkage through the support 61 and the locking cock iron 63, and the locking connecting rod 8 swings to drive the synchronous connecting rod 9 to swing, so that the support 61, the locking cock iron 63 and the core knife 6 connected with the two are driven to move up and down.
In this embodiment, the cutter 6 may be driven by power of a cylinder, an oil cylinder or a cam in other similar manners to move up and down, so as to realize cutting; the ejector rod 5 can be driven by power such as an oil cylinder, an air cylinder, a cam (such as a reducing cam) and the like to move along the length (namely the diameter direction of a circle in the annular arrangement) so as to change the size of a steel wire converted into a steel ring
In order to achieve better use effect, the above scheme can be further set as follows:
referring to fig. 12, the ejector rod 5 includes an ejector rod 51 and an ejector rod second 52, the ejector rod first 51 is horizontally arranged on the wire travelling path, the ejector rod second 52 is located above the ejector rod first 51 and concentric with the ejector rod first 51 to form annular distribution, and the ejector rod first 51 and the ejector rod second 52 can be driven by the same power at the same time or by different powers.
The ejector rod 5 is a main deformation element that a steel wire forms a spiral or annular steel ring and is further converted into a spring, the ejector rod I51 and the ejector rod II 52 are mutually matched, the steel wire horizontally input along the arrow in fig. 11 meets the ejector rod I51, under the resistance action of the ejector rod I51, the ejector rod II 52 is met in the upward moving process in the homeotropic bending direction, under the resistance action of the ejector rod II 52, the homeotropic bending direction is performed again, the steel ring is formed, when the length of the steel ring reaches a set specification, the core knife 6 falls down, the supporting steel ring is temporarily fixed, the cutter 7 falls down, and the steel ring is cut off, so that the spring with the set length is formed.
In order to achieve better use effect, the above scheme can be further set as follows:
the support 61 and the core cutter 6 are both positioned on a cushion block 62, a locking stopper 63 is positioned on the opposite side of the cushion block 62, and the cushion block 62 is matched with the locking stopper 63 to fix the core cutter 6 between the two. The core knife 6 is arranged between the locking cock iron 63 and the cushion block 62, and when the synchronous two-stage linkage formed by the locking connecting rod 8 and the synchronous connecting rod 9 is started, the locking cock iron 63 and the cushion block 62 are driven to synchronously move, so that the synchronous horizontal tightness of the arc shape, which takes the connection position of the upper end of the locking cock iron 63, the core knife 6 and the cushion block 62 relative to the locking connecting rod 8 and the oil cylinder 83 as the center of a circle, is shown.
In order to achieve better use effect, the above scheme can be further set as follows:
the output end of the oil cylinder 83 is provided with a push rod 831, and the push rod 831 is connected with the locking connecting rod 8 through a shaft. The oil cylinder 83 is used as a power output unit, which provides a moving kinetic energy source for the locking connecting rod 8, and is connected with the shaft of the locking connecting rod 8 through the pushing rod 831 (the shaft of the pushing rod 831 is connected with the shaft to form a center point of subsequent rotation), so that the horizontal movement of the pushing rod 831 can be directly converted into the swinging of the locking connecting rod 8, the arrangement of the space positions of all workpieces is facilitated, and the efficient transmission is facilitated.
In order to achieve better use effect, the above scheme can be further set as follows:
a first connecting shaft 82 is arranged between the locking connecting rod 8 and the locking stopper 63, and a second connecting shaft 92 is arranged between the synchronous connecting rod 9 and the locking stopper 63. The locking connecting rod 8, the synchronous connecting rod 9 and the locking stopper 63 are connected through the shaft, so that the stability of the transmission process is facilitated, the transmission stagnation caused by hard connection is avoided, and the flexibility of the transmission process is improved.
In order to achieve better use effect, the above scheme can be further set as follows:
the first rotating shaft 81 and the second rotating shaft 91 penetrate through the bracket 61 and are connected with the cushion block 62. The core knife 6, the support 61 and the cushion block 62 are sequentially arranged, the locking cock iron 63 and the cushion block 62 are arranged in parallel, and the arrangement of the first rotating shaft 81 and the second rotating shaft 91 provides a rotating fulcrum for the locking connecting rod 8 and the synchronous connecting rod 9, and the cushion block 62 and the locking cock iron 63 are matched to ensure synchronous movement.
In use, the oil cylinder 83 pushes the locking connecting rod 8 to swing left and right through the extension and retraction of the push rod 831, as the middle part of the locking connecting rod 8 and the upper end of the synchronous connecting rod 9 are connected with the locking cock iron 63 through the first connecting shaft 82, the synchronous connecting rod 9 is connected with the locking cock iron 63 through the second connecting shaft 92, the lower end of the locking connecting rod 8 and the lower end of the synchronous connecting rod 9 are connected with the bracket 61 and the cushion block 62 through the first rotating shaft 81, the synchronous connecting rod 9 is connected with the bracket 61 and the cushion block 62 through the second rotating shaft 92, the structure ensures the consistency and the synchronism of the two-stage linkage of the locking connecting rod 8 and the synchronous connecting rod 9, the locking connecting rod 8 and the synchronous connecting rod 9 do parallel swinging around the respective shafts, and the locking cock iron 63, the core knife 6 and the cushion block 62 are in the arc-shaped synchronous horizontal and the tight with the connecting position of the push rod 931 and the locking connecting rod 8 as the circle center under the cooperation of the bracket 61, so that the phenomenon of ' incapacity of loose core ' locking cannot be locked ' existing in the conventional screw fixing is avoided; meanwhile, the cushion block 62 and the locking cock iron 63 are respectively located at two sides of the core knife 6, and the inclined plane 631 on the locking cock iron 63 can be compressed in the stress process, so that the installation stability is improved.
The ejector rod 5 is a main deformation element that a steel wire forms a spiral or annular steel ring and is then converted into a spring, the ejector rod I51 and the ejector rod II 52 are mutually matched, the horizontally input steel wire meets the ejector rod I51, under the action of the resistance of the ejector rod I52, the ejector rod II 52 is met in the upward moving process in the homeotropic bending direction, under the action of the resistance of the ejector rod II 52, the homeotropic bending direction is formed, when the length of the steel ring reaches a set specification, the core knife 6 falls down and supports the steel ring to be temporarily fixed, the cutter 7 falls down, the steel ring is cut off to form the spring with the set length, and the spring is sent out, so that the finish machining process of the whole spring is completed.
Claims (6)
1. Spring finishing device, its characterized in that: the wire feeding device comprises a wire rod wheel, a straightening mechanism, a reduction gearbox, a plurality of groups of wire feeding wheels, core cutters, cutters and a plurality of ejector rods which are annularly arranged and are sequentially arranged along the wire feeding direction, wherein the wire rod wheel is used for supplying a steel wire to be processed; the pair of grooved wheels are arranged on a group of straightening bearing seats, a channel which allows steel wires fed by the wire rod wheels to pass through is reserved between the two grooved wheels, the channel corresponds to the pre-feeding groove and comprises a front groove and a rear groove, the front groove and the rear groove are separated by the central connecting line of the two grooved wheels, the pre-feeding groove, the front groove and the rear groove are positioned on the same central line, and the pre-feeding groove, the front groove and the rear groove are sequentially arranged and communicated; the pair of rotating shafts respectively prop against the outer sides of the pair of straightening bearing seats, are linked rotating shafts and are respectively used for controlling the movement of grooved wheels in the straightening bearing seats so as to meet the processing requirements of different steel wire diameters; the straightened steel wire is sent into a reduction gearbox and is sent out through a wire feeding wheel in the reduction gearbox, the straightened steel wire is sent between ejector rods distributed in an annular mode, the ejector rods stretch and move along the axial direction of the length direction of the steel wire to change the trend of the steel wire so as to form a steel ring, a cutter and a core cutter are located above the ejector rods, the core cutter is located on the outer side of an annular structure formed by the ejector rods and is lifted up and down to support the formed steel ring, the cutter moves up and down, and the steel ring is cut off to form a spring under the cooperation of the core cutter;
the pair of rotating shafts respectively correspond to the first driven shaft and the second driven shaft, the first driven shaft and the second driven shaft are respectively connected with the same driving shaft in a meshed mode, and the driving shafts rotate to drive the first driven shaft and the second driven shaft to rotate, so that linkage of the pair of rotating shafts is achieved;
the grooved pulley is a V-shaped grooved pulley, the center of the grooved pulley is inwards recessed to form a steel wire running channel, the width of a front groove is different from that of a rear groove in the channel structure, the front groove is a square groove with uniform width and the same width, and the rear groove is of a horn-shaped structure with gradually increased width;
the wire feeding wheel is arranged on a wheel shaft, an inner stepped groove and an outer stepped groove are formed in the wheel shaft, the wire feeding wheel is sleeved on the wheel shaft through the outer stepped groove, a taper sleeve is sleeved on the inner stepped groove, and the taper sleeve is positioned on the inner side of the wire feeding wheel;
the speed reduction box comprises a box body, an input shaft, an output shaft, a hand wheel and a speed change screw rod, wherein the input shaft and the output shaft are respectively arranged on the box body, a plurality of transmission gears and a plurality of input gears are arranged on the input shaft, a plurality of output gears are arranged on the output shaft, the transmission gears are meshed with the wire feeding gears, the input gears are meshed with the output gears, and the power is transmitted from the wire feeding gears to the transmission gears to the input shaft to the input gears to the output shafts; the input shaft end is provided with a variable speed screw rod, the variable speed screw rod is driven by a hand wheel, a sliding bearing is arranged at the joint of the input shaft and the box body, the hand wheel rotates to drive the variable speed screw rod to work, the variable speed screw rod drives the input shaft to slide along the sliding bearing, and the joint position of the input gear and the output gear is changed, so that spline-free conversion at different speeds is realized;
the core knife is arranged on the bracket, the side edge of the core knife is embedded with a locking stopper, and an inclined plane is arranged on one side, far away from the core knife, of the locking stopper; the bracket is provided with a first rotating shaft and a second rotating shaft, the first rotating shaft is provided with a locking connecting rod, the middle part of the locking connecting rod is connected with a locking stopper, and the other end of the locking connecting rod is connected with the output end of the oil cylinder; a synchronous connecting rod is arranged on the second rotating shaft, and the other end of the synchronous connecting rod is connected with a locking stopper; the oil cylinder drives the locking connecting rod to swing, the locking connecting rod and the synchronous connecting rod form synchronous two-stage linkage through the support and the locking cock iron, and the core knife and the locking cock iron are driven to move through the support and the locking cock iron.
2. The spring finishing apparatus of claim 1, wherein: the support and the core knife are both positioned on the cushion block, the locking stopper is positioned on the opposite side of the cushion block, and the cushion block is matched with the locking stopper to fix the core knife between the support and the core knife.
3. The spring finishing apparatus of claim 1, wherein: and a first connecting shaft is arranged between the locking connecting rod and the locking cock iron, and a second connecting shaft is arranged between the synchronous connecting rod and the locking cock iron.
4. The spring finishing apparatus of claim 1, wherein: the output end of the oil cylinder is connected with the locking connecting rod shaft.
5. The spring finishing apparatus of claim 1, wherein: the input shaft is provided with two transmission gears and two input gears, the transmission gears are meshed with the wire feeding gears, and the input gears are meshed with the output gears; the output shaft is provided with two output gears, namely a first output gear and a second output gear, and the number of teeth of the first output gear is different from that of the second output gear.
6. The spring finishing apparatus of claim 1, wherein: and a rolling bearing is arranged between the sliding bearing and the box body.
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| CN201710841637.7A CN107639189B (en) | 2017-09-18 | 2017-09-18 | Spring finishing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710841637.7A CN107639189B (en) | 2017-09-18 | 2017-09-18 | Spring finishing device |
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| CN107639189A CN107639189A (en) | 2018-01-30 |
| CN107639189B true CN107639189B (en) | 2023-09-08 |
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| CN115608883B (en) * | 2022-10-21 | 2023-11-07 | 徐州鸿润达电动车有限公司 | Device is used in production of carbon spring for motor |
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Effective date of registration: 20230810 Address after: No. 198 Zhejiang Forging Road, Pukou Street, Shengzhou City, Shaoxing City, Zhejiang Province, 312400 Applicant after: ZHEJIANG OMNIPOTENT SPRING MACHINE Co.,Ltd. Address before: 312400 No. 563, Cao Jia Yang village, Sanjiang street, Shengzhou, Shaoxing, Zhejiang. Applicant before: Jin Miaoxing |
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