CN118141543A - Double-arrow bending equipment with vertical fixing seat - Google Patents

Abstract

The invention relates to double-arrow bending equipment with a vertical fixing seat and a method thereof, and the structural composition of the double-arrow bending equipment comprises: the device comprises a rotary conveying structure, an up-down sliding structure, a rotary power structure, a support structure, a calibration structure, a fixed bending structure, a bending rod and a cutter. The fixing seat for fixing the bending structure is vertically arranged, and double-arrow clamps on the Holey retainer can be bent under the cooperation of the bending elbow.

Description

Double-arrow bending equipment with vertical fixing seat

Technical Field

The invention relates to the field of dental orthodontics, in particular to double-arrow bending equipment.

Background

After the orthodontic is completed, the post-orthodontic position is typically maintained using a transparent retainer or a holy (Hawely) retainer consisting of a double curved labial arch and a double scissors clip. The arrows of the double arrow card (ADAMS CLASP) are embedded below the high points of the mesial and distal profiles of the first molar, so that when the hall (Hawely) retainer is worn on the tooth, the arrows create a friction effect, which acts to prevent the retainer from dislocating from the tooth. Because the Holly retainer has good stability, doctor's rate of utilization is very high, but because the complex structure of double arrow card, all be manual bending in the past, cause processing difficulty, with high costs, can't realize automatic bending.

Typically, the first molar has a buccal lingual side width of 8-10 mm, a length of 11-13 mm and a height of 5-8 mm. Therefore, when the double-arrow-head clamp is worn by a patient, the height of the double-arrow-head clamp cannot exceed the occlusal surface in order to prevent the steel wire from generating occlusal collision with the upper teeth and the lower teeth.

Patent CN 103752722B describes a rotary bending machine in which the bending structure is mounted on a slewing bearing to rotate along with it, but the structure is bulky, and is suitable for industrial production only, and cannot be suitable for the processing of miniaturized double-headed arrows customized individually.

Patent US20220008169A1 describes a wire bender but the apparatus is suitable for bending orthodontic square wires, whereas the double arrow cards on the holly holders are usually round stainless steel wires of 0.8mm or 0.7 mm.

Disclosure of Invention

The invention aims to realize automatic bending of a high-difficulty double-arrow card, wherein an inner included angle formed by two sides of a bent arrow is 20-25 degrees, the minimum diameter of an inner arc of the arrow is 0.5-1 mm, and no collision is realized. The difficulty is that the included angle in the double arrow is very small, 20-25 degrees, the steel wire needs to be bent 180 degrees after being tested, and the steel wire can rebound to about 25 degrees, and the steel wire can rebound to 20 degrees after being bent 190 degrees. The diameter of the inner arc of the arrow is 0.5-1 mm, the thickness of the steel wire which is bent around can only be 0.5-1 mm, the resistance generated during bending is required to be reduced as much as possible, meanwhile, the double arrow clamp structure is complex, the space around the near center and the far center of one tooth is narrow, and the automatic bending is easy to generate collision. Because double arrow bends and need to rotate the steel wire more than 180 degrees after clamping, the straightener clamps the steel wire at the moment, and the steel wire between the straightener and the steel wire clamping part can twist 180 degrees, so that the performance of the steel wire can be possibly affected, and bending equipment needs to meet the requirement that the steel wire can rotate more than 180 degrees while clamping and conveying.

In addition, because the factory for manufacturing the Holey retainers is very busy in peak period, hundreds of Holey retainers are required to be manufactured every day, and each retainer is provided with 2 double-shear-head clamps and a double-curved lip bow, so that the steel wire is bent and cut off for thousands of times a day, abrasion is unavoidable, the bent heads, the fixing seats and the cutters are required to be replaced, and an accurate, quick and convenient calibration structure is required to realize quick installation after replacement.

In order to achieve the above object, the present invention provides a double-arrow bending apparatus having a vertical fixing base, the structural composition of which includes: the device comprises a bracket structure, an up-down sliding structure, a rotary power structure, a rotary conveying structure, a calibration structure, a fixed bending structure, a bending rod and a cutter, wherein a fixing seat is vertically arranged on a middle plate.

Further, the bracket structure comprises an upper plate, a middle plate, a lower plate, a rear plate and left and right side plates, wherein the upper plate is fixed with the middle plate through a plurality of connecting rods.

Further, the left side slide plate and the right side slide plate of the up-down sliding structure fix the upper slide plate and the lower slide plate on the sliding mounting plate, the upper slide plate is positioned between the upper plate and the middle plate, the lower slide plate is positioned between the middle plate and the lower plate, the upper slide plate and the lower slide plate are in non-contact with a connecting rod for fixing the upper plate and the middle plate when moving vertically, the first vertical height of the up-down sliding structure is that the center point of a notch on the first bending side is flush with the center of a steel wire, the second vertical height is that the center of the notch on the second bending side is flush with the center point of the steel wire, and the third vertical height is that the cutting edge of a cutter is higher than the highest point of the steel wire.

Furthermore, the vertical movement of the upper sliding plate and the lower sliding plate of the up-down sliding structure realizes synchronous sliding through the up-down movement of the sliding mounting plate, and the distance between the upper sliding plate and the lower sliding plate can play a good role in resisting the lateral force of bending due to the lateral force generated during bending.

Further, the hollow speed reduction rotary table of the rotary power structure is arranged at the center of the upper sliding plate, the flange at the bottom of the bending rod is fixed on the hollow speed reduction rotary table, the hollow speed reduction rotary table penetrates out of the upper plate, the calibration structure consists of a side inclined surface, an upper side surface, a lower side surface, an intrados surface, an upper notch and a lower notch, the side inclined surface of the calibration structure is meshed with the side inclined surface of the fixed seat, the upper side surface of the calibration structure is meshed with the side surface of the bending head, and the intrados surface of the calibration structure is meshed with the bending column.

Further, the calibration structure is used for calibrating the positions of the bending head and the head of the fixing seat, so that the central lines of the bending head and the head of the fixing seat are overlapped, the calibration structure is slowly pushed in along the horizontal direction from the bending head to the head of the fixing seat, when the inside of the calibration structure is completely matched with the bending head and the head of the fixing seat, the rotation center of the bending head is determined to be overlapped with the center of the discharge hole of the fixing seat, at the moment, the origin sensor of the bending rod is adjusted to be from a non-bright position to a bright position and is fixed by screws, the hardware origin position of the bending rod can be set, and the calibration is finished.

Further, the steel wire pressing and conveying structure, the straightener and the storage disc of the rotary conveying structure synchronously rotate along with the steel wires, so that the steel wires can be rotated by more than 180 degrees while being clamped and conveyed, and the performance of the steel wires cannot be influenced by the rotation of 180 degrees between the straightener and the steel wire clamping part. The rear bearing fixing seat is arranged at the rear part of the fixing plate, the pair of front bearing fixing seats are arranged at the front part of the fixing plate, the front rotating shaft is fixed at the front end of the feeding mounting plate, the front rotating shaft is fixed with the synchronous wheel, the synchronous wheel is positioned between the pair of front bearing seats, the front end of the straightener is arranged on the feeding mounting plate, the rear end of the straightener is provided with the rear rotating shaft, the centers of the front rotating shaft and the rear rotating shaft are provided with steel wire through holes, the tail part of the straightener is provided with steel wire guiding inclined planes, and the front part of the front rotating shaft is provided with a steel wire sleeve with the inner diameter not more than 1.5mm and the outer diameter not more than 4 mm. In the conventional equipment, the sleeve is in a relatively large cuboid structure, so that collision is generated between the equipment and the bent hyperbolic lip bow equal-length structure during operation. Meanwhile, when the U-shaped small arc is bent, the suspended steel wire can generate bending to cause inaccurate bending because the steel wire receives backward thrust, the small sleeve can provide protection for the steel wire to prevent the steel wire from bending, can provide guidance for the steel wire to smoothly enter the circular guide taper hole of the fixing seat, and can reduce the probability of collision between the equipment and bent hyperbolic lip bow structures.

Further, the cutter is arranged in the through holes of the fixing seat and the fixing rod, the upper part of the cutter is provided with a cutting edge, the lower part of the cutter is connected with the cutter seat through the fixing pin hole, the two cutters are buckled on the two sides of the cutter seat, a spring is arranged between the nut of the fixing rod and the cutter seat, the width of the cross section of the cutter is 1-2 mm, the height is 0.7-1 mm, and the distance between the front end face of the cutter and the discharge hole is 0.5-3 mm.

Further, when the cutter moves up and down in a sliding manner, the top head on the lower sliding plate moves up to the bottom of the cutter fixing seat, the cutting edge part of the upward compression spring cuts off the steel wire upward, the spring after the lower sliding plate moves down to compress generates elasticity to push the cutter fixing seat to move down, and the cutting edge of the cutter moves down to a height lower than the bottommost surface of the steel wire, so that the steel wire conveying is not hindered. The first vertical height in the up-down sliding structure corresponds to the height when the first bending table bends the steel wire, the second vertical height corresponds to the height when the second bending table bends the steel wire, and the third vertical height corresponds to the height when the cutting edge of the cutter moves upwards to cut the steel wire.

Further, the fixed bending structure comprises a fixed seat, a fixed rod and a bending head, wherein the fixed rod is vertically fixed at the center of the middle plate, the fixed seat is fixed at the upper end of the fixed rod through a locating pin and a screw, the rotating center point of the bending head is positioned on the center line of a steel wire channel of the fixed seat, the front-back distance between the rotating center point of the bending head and the center point of a discharge hole of the fixed seat is not more than 2mm, the outer side surface of the bending head and the steel wire channel form 180-190 DEG, the shortest distance between the inner wall of the steel wire channel and the outer side surface is 0.2-1.5 mm, the left and right second bending platforms of the bending head are symmetrically distributed at the left and right sides of the first bending platform, the diameter of the upper end surfaces of the first bending platform and the second bending platform is 1-3 mm, the distance between the upper end surface of the first bending platform and the upper end surface of the second bending platform is 1-8 mm, the distance between the upper end surface of the first bending platform and the lower end surface of the bending head is 10-20 mm, the distance between the side concave center point of the first bending platform and the center point of the discharge hole of the fixed seat is 1-5 mm, and the distance between the side center point of the concave center point of the second bending platform and the discharge hole of the second bending platform is 2.5-6 mm.

Further, when the bending head is provided with the first bending table and the second bending table at the same time, the closer the distance between the center point of the side notch of the first bending table and the center point of the discharging hole of the fixed seat is, the smoother the bending arc is, and the farther the bending arc is, the smaller straight line section is not smooth enough, and only the angle of 0-90 degrees can be folded. The arc U-shaped inside the hyperbolic lip bow has an arc diameter of about 4mm, and the side notch of the first bending table is very close to the center point of the discharge port of the fixed seat, so that the arc U-shaped with the arc diameter of 4mm can be folded. The farther the distance between the center point of the side notch of the second bending table and the center point of the discharging port of the fixed seat is, the higher the double arrow is, the 40 degrees and 190 degrees are bent by the second bending table.

Further, the fixing base comprises a steel wire channel, a discharge hole, a round leading-in taper hole, an outer side surface, a side inclined surface, a back concave surface, a lower concave surface body part, a lower end surface of the discharge hole, a side end surface of the discharge hole, an upper end surface rear part and a lower end surface body part, wherein the outer side surface, the back concave surface and the lower concave surface form a side concave opening positioned on the side surface of the fixing base, and the bending head comprises a first bending table, a second bending table, a lower notch of the bending head, a middle notch of the bending head, a rear inclined surface of the first bending table, a slope of the bending head, a side surface of the bending head, a positioning pin hole and a fixing screw hole of the bending head.

Further, the fixed bending structure can be simplified as: the bending head is composed of a first bending table, a second bending table, a fixing seat, a steel wire channel, a discharge hole, a round leading-in taper hole, an outer side face, a side inclined face, a back concave face, a lower concave face body part, a discharge hole lower end face, a discharge hole side end face, an upper end face rear part, a lower end face body part and a side end face inclined face, wherein the outer side face, the back concave face and the lower concave face form a side concave mouth positioned on the side face of the fixing seat, and the bending head is composed of the first bending table, a notch in the bending head, a bending head inclined face, a bending head side face, a positioning pin hole and a bending head fixing screw hole, and the cutter vertically penetrates through the fixing seat and is positioned in front of the upper end face rear part of the fixing seat.

Furthermore, the notches at the left end and the right end of the fixed bending structure are symmetrical, and the outer side face, the back concave face and the lower concave face of the side notches are used for ensuring that the folded arrow cannot collide, and meanwhile, the strength of the bent steel wire is also ensured. The bending head is provided with a single bending table structure and a double bending table structure, a bending head lower notch and a bending head middle notch are arranged below the bending table on the bending head, the lower end of the first bending table is a bending head middle notch, the lower part of the second bending table is a lower notch, the single bending table structure is provided with no second bending table and also provided with a lower notch, and the lower notch and the middle notch of the bending head are used for avoiding collision between the bending head and the upper end face and the lower end face of a discharge port of a fixed seat or between the bending head and a bent steel wire in the bending process.

Further, the shortest distance between the inner wall of the steel wire channel of the steel wire bending fixing seat to the right through the steel wire channel of the fixing seat and the outer side surface can be 0.2mm, if a slope is dug at the outer side surface on the side notch to form a new outer side surface, when the shortest distance between the inner wall of the steel wire channel and the side concave surface is 0.2mm, 0.2mm is the limit distance between the inner wall of the steel wire channel and the thickness of the outer side surface, and at the moment, the steel wire can be bent to 191 degrees, and the formula is as follows:

tanA=0.8/4=0.2 A=arctan0.2≈11° 180°＋11°=191°

Therefore, the maximum bending angle of the fixed bending structure is 190 degrees.

Further, after the fixed bending structure is bent by 180-190 degrees in a large angle, the bent steel wire can generate an arrow bending angle with an inner included angle of 20-30 degrees according to different materials.

According to the double-arrow bending equipment with the vertical fixing seat, the steel wire is progressively conveyed by the steel wire conveying structure, the steel wire fixing structure is matched with the steel wire bending structure to bend the progressively-conveyed steel wire according to the bending parameters contained in the preset program, the bending device in the bending structure adopts a brand-new bending design, accuracy and high efficiency are integrated, the problems of high bending difficulty and low efficiency of the existing steel wire bending through manual bending are effectively solved, and the bending machine is greatly improved and upgraded compared with the existing bending machine.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that other drawings are obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic perspective front view of the structure of each part of a bending device;

Fig. 2 is a schematic perspective view of an up-down sliding structure of the bending apparatus;

FIG. 3 is a schematic perspective view of a fixed bending structure of a double bending table;

Fig. 4 is a schematic perspective view of a vertical fixing base of the bending device;

FIG. 5 is a schematic perspective view of a double bending station structure of the bending apparatus;

FIG. 6 is a schematic perspective view of a single bending station fixed bending structure;

FIG. 7 is a schematic perspective view of a cutter structure of the bending apparatus;

fig. 8 and 8-1 are perspective views of calibration structures of bending equipment;

FIGS. 9 and 9-1 are plan views of horizontal cross sections of the center points of the steel wires;

In the figure: 00-steel wire, 100-bracket structure, 101-upper plate, 102-lower plate, 103-middle plate, 104-rear plate, 105-left and right side plates, 107-fixed rod, 200-up and down sliding structure, 201-up and down sliding plate, 202-down sliding plate, 203-side sliding plate, 204-sliding mounting plate, 205-connecting rod, 300-rotation power structure, 301-hollow reduction rotating table, 302-flange, 400-rotation conveying structure, 401-front bearing seat, 402-rear bearing seat, 403-synchronizing wheel, 404-front rotating shaft, 405-steel wire pressing structure, 406-straightener, 407-straightening fixed plate, 408-storage disc, 409-steel wire sleeve, 500-calibration structure, 501-side inclined plane, 502-upper side, 503-lower side, and 504-intrados, 505-upper notch, 506-lower notch, 600-fixed bend structure, 601-fixed seat, 602-discharge port, 603-bend, 604-bend locating pin hole, 605-bend fixing screw hole, 606-bend lower plane, 607-fixed seat pin hole, 608-fixed seat screw hole, 609-upper end face rear portion, 610-side notch, 611-back concave face, 612-lower concave face, 613-outer side face, 614-side inclined face, 615-lower concave face body portion, 616-discharge port lower end face, 617-discharge port side end face, 618-lower end face body portion, 619-side end face slope, 620-round leading-in taper cone, 621-steel wire channel, 631-first bend table, 632-second bending table, 633-bending head lower notch, 634-bending head middle notch, 635-first bending table rear inclined surface, 636-bending head inclined surface, 637-bending head side surface, 638-first bending side notch central point, 639-second bending side notch central point, 700-bending rod, 800-cutter, 801-cutter base, 802-spring, 803-cutter buckle, 804-cutter fixing pin hole, 805-plug, 806-fixing rod nut

Detailed Description

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below are exemplary and intended to illustrate the present invention and should not be construed as limiting the invention, and all other embodiments, based on the embodiments of the present invention, which may be obtained by persons of ordinary skill in the art without inventive effort, are within the scope of the present invention.

In the description of the present invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" is intended to include, either explicitly or implicitly, one or more of such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

Referring to fig. 1 and 3, a double-arrow bending apparatus with a vertical fixing base includes: the device comprises a bracket structure 100, an up-down sliding structure 200, a rotary power structure 300, a rotary conveying structure 400, a calibration structure 500, a fixed bending structure 600, a bending rod 700 and a cutter 800, wherein a fixing seat 601 is vertically arranged on a middle plate.

Referring to fig. 1, the bracket structure is composed of an upper plate 101, a lower plate 102, a middle plate 103, a rear plate 104, left and right side plates 105, and the upper plate is fixed with the middle plate by a plurality of connecting rods 205, and the bracket structure plays roles of protecting and fixedly supporting the rotating power structure.

Referring to fig. 1, a double-arrow bending apparatus with a vertical fixing base, a vertical sliding structure 200 includes: 201-upper slide, 202-lower slide, 203-side slide, 204-slide mounting panel, 205-connecting rod, upper slide, lower slide are fixed on slide mounting panel to upper slide, lower slide, upper slide is located between upper plate and the medium plate, lower slide is located between medium plate and the lower plate, upper and lower slide is the contactless with the connecting rod of fixed upper plate and medium plate when moving perpendicularly, upper and lower slide's first vertical height is first bending side notch central point 638 and steel wire center parallel and level, second vertical height is second bending side notch central point 639 and steel wire central point parallel and level, the third vertical height is the cutter blade is higher than the steel wire peak.

The vertical movement of the upper sliding plate and the lower sliding plate of the up-down sliding structure realizes synchronous sliding through the up-down movement of the sliding mounting plate, and the distance between the upper sliding plate and the lower sliding plate can play a role in well resisting the lateral force of bending due to the lateral force generated during bending.

Referring to fig. 2, a double-arrow bending apparatus with a vertical fixing base, a rotating power structure 300 includes: the hollow speed reduction rotary table 301 and the flange 302 are arranged at the center of the upper slide plate, the flange at the bottom of the bending rod is fixed on the hollow speed reduction rotary table, and the hollow speed reduction rotary table penetrates out of the upper plate.

Referring to fig. 2, a double-arrow bending apparatus with a vertical fixing base, a rotary conveying structure 400 includes: the front bearing seat 401, the back bearing seat 402, the synchronizing wheel 403, the front rotation axis 404, steel wire pressure send the structure 405, the straightener 406, the straightening fixed plate 407, the storage disc 408, steel wire sleeve 409, the back bearing fixing base of rotatory conveying structure is installed at the fixed plate rear portion, a pair of front bearing fixing base are installed in the fixed plate front portion, the front rotation axis is fixed at the feeding mounting panel front end, the front rotation axis is fixed with the synchronizing wheel, the synchronizing wheel is located the centre of a pair of front bearing seats, the straightener front end is installed on the feeding mounting panel, the rear rotation axis is installed to the rear end, preceding, the rear rotation axis center has steel wire through-hole, the afterbody has steel wire guide inclined plane, steel wire sleeve that the internal diameter is not greater than 1.5mm, the external diameter is not greater than 4mm is installed at the front rotation axis front portion, upper and lower adjustment structure is fixed on the feeding mounting panel and can adjust the power of compressing steel wire from top to bottom. The motor drives the front and rear rotating shafts to rotate through the synchronous wheels, and the hollow speed reduction rotating table can also be used as a power source to provide power for rotation.

Referring to fig. 3, a double-arrow bending apparatus with a vertical fixing base, the fixing bending structure comprises: the fixing seat 601, the fixing rod 107, the bending head 603, the fixing rod is vertically fixed in the center of the middle plate, the fixing seat is fixed at the upper end of the fixing rod through a locating pin 607 and a screw 608, the rotating center point of the bending head is located on the center line of a steel wire channel of the fixing seat, the front-back distance between the rotating center point of the bending head and the center point of a discharge hole 602 of the fixing seat is not more than 2mm, the 180-190 DEG is formed between the outer side surface of the bending head and the steel wire channel, the shortest distance between the inner wall 621 of the steel wire channel and the outer side surface 613 of the steel wire channel is 0.2-1.5 mm, the left and right second bending platforms of the bending head are symmetrically distributed on the left and right sides of the first bending platform, the diameter of the upper end surfaces of the first bending platform 631 and the second bending platform 632 is 1-3 mm, the distance between the upper end surface of the first bending platform and the upper end surface of the second bending platform is 1-8 mm, the distance between the upper end surface of the first bending platform and the lower end surface of the bending head is 10-20 mm, the distance between the center point of the side recess 638 of the side surface of the first bending platform and the center point of the discharge hole of the fixing seat is 1-5 mm, and the distance between the center point of the side recess of the second bending platform and the center point of the discharge hole is 2.6-6 mm.

Referring to fig. 4 and 5, a fixing and bending structure 600 is disclosed, the fixing base is composed of a steel wire channel 621, a discharge hole 602, an outer side 613, a side slope 614, a back concave 611, a lower concave 613, a lower concave body 615, a discharge hole lower end 616, a discharge hole side end 617, an upper end rear 609, a lower end body 618, and a circular leading-in taper 620, wherein the outer side, the back concave, and the lower concave form a side recess 610 located at a side of the fixing base, and the bending head is composed of a first bending table, a second bending table, a bending head lower recess 633, a bending head middle recess 634, a first bending table back slope 635, a bending head slope 636, a bending head side 637, a bending head positioning pin hole 604, and a bending head fixing screw hole 605.

Referring to fig. 4 and 6, a fixed bending structure, a bending head has only a first bending table, and does not have a second bending table, a fixing seat is composed of a steel wire channel, a discharge hole, an outer side surface, a side inclined surface, a back concave surface, a lower concave surface body part, a lower end surface of the discharge hole, a side end surface of the discharge hole, a rear part of the upper end surface, a lower end surface body part, a side end surface slope 619, and a circular leading-in taper hole, wherein the outer side surface, the back concave surface and the lower concave surface form a side recess on the side surface of the fixing seat, the bending head is composed of a first bending table, a recess in the bending head, a bending head slope, a bending head side surface, a positioning pin hole and a bending head fixing screw hole, and a cutter vertically penetrates through the fixing seat and is positioned in front of the rear part of the upper end surface of the fixing seat.

The notches at the left end and the right end of the fixed bending structure are symmetrical, and the outer side face, the back concave face and the lower concave face of the side notch are used for ensuring that the folded arrow cannot collide, and meanwhile, the strength of the bent steel wire is ensured. The bending head is provided with a single bending table structure and a double bending table structure, a bending head lower notch and a bending head middle notch are arranged below the bending table on the bending head, the lower end of the first bending table is a bending head middle notch, the lower part of the second bending table is a lower notch, the single bending table structure is provided with no second bending table and also provided with a lower notch, and the lower notch and the middle notch of the bending head are used for avoiding collision between the bending head and the upper end face and the lower end face of a discharge port of a fixed seat or between the bending head and a bent steel wire in the bending process.

Referring to fig. 7, a double-arrow bending apparatus with a vertical fixing base, a cutter structure 800 comprises: cutter base 801, spring 802, cutter buckle 803, cutter fixation pin hole 804, plug 805, dead lever nut 806, the cutter is arranged in the through-hole of fixing base, the dead lever, cutter upper portion has the blade, the cutter lower part passes through the dead lever hole and links to each other with the cutter seat, two cutter buckles are for being located the cutter seat both sides, there is the spring between dead lever nut and cutter seat, cutter cross section width 1 # -2 mm, high 0.7 # -1 mm, the distance of terminal surface and discharge gate is 0.5 # -3 mm before the cutter, during the cutter up-and-down sliding motion, the plug on the lower slide moves up to the cutter fixing base bottom, upward the compression spring cutting edge portion upwards cuts off the steel wire again, the spring after the lower slide moves down and produces elasticity promotion cutter fixing base and moves down, the cutter blade moves down to be less than the steel wire bottommost surface height, do not hinder the steel wire transportation. The first vertical height in the up-down sliding structure corresponds to the height when the first bending table bends the steel wire, the second vertical height corresponds to the height when the second bending table bends the steel wire, and the third vertical height corresponds to the height when the cutting edge of the cutter moves upwards to cut the steel wire.

Referring to fig. 8 and 8-1, a double-arrow bending apparatus with a vertical fixing base, the alignment structure 500 includes: the calibration structure comprises a side inclined plane 501, an upper side surface 502, a lower side surface 503, an inner cambered surface 504, an upper notch 505 and a lower notch 506, wherein the side inclined plane of the calibration structure is meshed with the side inclined plane 614 of the fixed seat, the upper side surface of the calibration structure is meshed with the side 637 of the bending head, the inner cambered surface of the calibration structure is meshed with the bending column 700, the calibration structure is used for calibrating the positions of the bending head 603 and the head 601 of the fixed seat, so that the central lines of the two are overlapped, the calibration structure is slowly pushed into the upper notch of the calibration structure along the horizontal direction from the bending head to the head of the fixed seat, when the inside of the calibration structure is completely matched with the bending head and the head of the fixed seat, the rotation center of the bending head is determined to be overlapped with the center of the discharge hole of the fixed seat, at the moment, the origin sensor of the bending rod is adjusted from a non-bright position to a bright position and is screwed, the hardware origin position of the bending rod can be set, and the calibration is finished.

Referring to fig. 9 and 9-1, the shortest distance between the inner wall of the wire channel of the fixing seat and the outer side surface, which is formed by bending the wire 00 through the wire channel 621 of the fixing seat to the right, may be 0.2mm, if a slope is dug at the outer side surface on the side recess to form a new outer side surface 613, when the shortest distance between the inner wall of the wire channel and the side recess is 0.2mm, 0.2mm is the limit distance between the inner wall of the wire channel and the thickness of the outer side surface, and at this time, the wire may be bent to 191 °, as follows:

tanA=0.8/4=0.2 A=arctan0.2≈11° 180°＋11°=191°

Therefore, the maximum bending angle of the fixed bending structure is 190 degrees, and after the fixed bending structure bends 180-190 degrees in a large angle, the bent steel wire can rebound by 10-30 degrees according to different materials.

In summary, the double-arrow bending equipment with the vertical fixing seat is provided, the improvement and the upgrading are carried out on the basis of the existing bending machine on the market, the steel wire is automatically transported by adopting the steel wire conveying structure, the steel wire fixing structure is arranged to be matched with the steel wire bending mechanism to bend the steel wire according to bending parameters contained in a preset program, and the problems of high bending difficulty and low efficiency of the existing steel wire bending by manual bending are effectively solved.

While the fundamental and principal features of the invention and advantages of the invention have been shown and described, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (8)

1. Double-arrow bending equipment with perpendicular fixing base, characterized by comprising:

The device comprises a bracket structure, an up-down sliding structure, a rotary power structure, a rotary conveying structure, a calibration structure, a fixed bending structure, a bending rod and a cutter, wherein a fixing seat is vertically arranged on a middle plate, the bracket structure consists of an upper plate, the middle plate, a lower plate, a rear plate and left and right side plates, and the upper plate is fixed with the middle plate through a plurality of connecting rods.

2. The double-arrow bending apparatus according to claim 1, wherein the upper and lower slide plates are fixed on the slide mounting plate by left and right slide plates of the upper and lower slide structure, the upper slide plate is positioned between the upper plate and the middle plate, the lower slide plate is positioned between the middle plate and the lower plate, the upper and lower slide plates are not contacted with a connecting rod for fixing the upper plate and the middle plate when vertically moving, the first vertical height of the upper and lower slide structure is that the center point of the notch of the first bending side is flush with the center of the steel wire, the second vertical height is that the center of the notch of the second bending side is flush with the center point of the steel wire, and the third vertical height is that the cutting edge of the cutter is higher than the highest point of the steel wire.

3. The double-arrow bending apparatus according to claim 1, wherein the hollow reduction rotary table of the rotary power structure is installed at the center of the upper slide plate, the flange at the bottom of the bending rod is fixed on the hollow reduction rotary table, the hollow reduction rotary table penetrates out of the upper plate, and the alignment structure is composed of a side inclined surface, an upper side surface, a lower side surface, an intrados surface, an upper notch and a lower notch.

4. The double-arrow bending apparatus according to claim 1, wherein the wire pressing and feeding structure of the rotary conveying structure, the straightener, and the stock tray rotate synchronously along with the wires, the rear bearing fixing base is installed at the rear part of the fixing plate, the pair of front bearing fixing bases are installed at the front part of the fixing plate, the front rotating shaft is fixed at the front end of the feeding mounting plate, the front rotating shaft is fixed with the synchronizing wheel, the synchronizing wheel is located in the middle of the pair of front bearing seats, the front end of the straightener is installed on the feeding mounting plate, the rear end of the straightener is installed with the rear rotating shaft, the centers of the front and rear rotating shafts are provided with wire through holes, the tail parts are provided with wire guiding inclined planes, and the front part of the front rotating shaft is provided with a wire sleeve with an inner diameter of not more than 1.5mm and an outer diameter of not more than 4mm.

5. The double-arrow bending equipment as claimed in claim 1, wherein the cutter is positioned in the through holes of the fixing seat and the fixing rod, the upper part of the cutter is provided with a cutting edge, the lower part of the cutter is connected with the cutter seat through the fixing pin hole, two cutters L are clamped on two sides of the cutter seat, a spring is arranged between the nut of the fixing rod and the cutter seat, the width of the cross section of the cutter is 1-2 mm, the height is 0.7-1 mm, and the distance between the front end surface of the cutter and the discharge hole is 0.5-3 mm.

6. The double-arrow bending equipment of claim 1, wherein the fixed bending structure comprises a fixed seat, a fixed rod and a bending head, the fixed rod is vertically fixed at the center of the middle plate, the fixed seat is fixed at the upper end of the fixed rod through a locating pin and a screw, the rotating center point of the bending head is positioned on the central line of a steel wire channel of the fixed seat, the front-back distance between the rotating center point and the center point of a discharge hole of the fixed seat is not more than 2mm, the outer side surface of the bending head and the steel wire channel form 180-190 degrees, the shortest distance between the inner wall and the outer side surface of the steel wire channel is 0.2-1.5 mm, the left and right second bending platforms of the bending head are symmetrically distributed at the left and right sides of the first bending platform, the diameters of the upper end surfaces of the first bending platform and the second bending platform are 1-3 mm, the distance between the upper end surface of the first bending platform and the upper end surface of the second bending platform is 1-8 mm, the distance between the upper end surface of the first bending platform and the lower end surface of the bending platform is 10-20 mm, the distance between the side center point of the side recess of the first bending platform and the center point of the discharge hole of the fixed seat is 1-5 mm, and the distance between the side recess of the first bending platform and the center point of the discharge hole is 2.5 mm.

7. The fixed bending structure of claim 6, wherein the fixing base comprises a steel wire channel, a discharge port, a circular leading-in taper hole, an outer side face, an outer inclined face, a rear concave face, a lower end face of the discharge port, a side end face of the discharge port, a rear part of the upper end face and a lower end face, wherein the outer side face, the rear concave face and the lower concave face form a side concave mouth positioned on the side face of the fixing base, the bending head comprises a first bending table, a second bending table, a lower notch of the bending head, a notch in the bending head, a rear inclined face of the first bending table, a bending head slope, a side face of the bending head, a positioning pin hole and a fixing screw hole of the bending head, and the cutter vertically penetrates through the fixing base and is positioned in front of the rear part of the upper end face of the fixing base.

8. The fixed bending structure of claim 6, wherein the bending head comprises only a first bending stage and no second bending stage, the fixing seat comprises a steel wire channel, a discharge hole, a circular leading-in taper hole, an outer side surface, an outer inclined surface, a back concave surface, a lower concave surface body part, a discharge hole lower end surface, a discharge hole side end surface, an upper end surface rear part, a lower end surface body part and a side end surface slope, wherein the outer side surface, the back concave surface and the lower concave surface form a side concave opening positioned on the side surface of the fixing seat, the bending head comprises a first bending stage, a bending head middle notch, a bending head slope, a bending head side surface, a positioning pin hole and a bending head fixing screw hole, and the cutter vertically penetrates through the fixing seat and is positioned in front of the upper end surface rear part of the fixing seat.