CN210115681U

CN210115681U - Automatic chamfering and reducing device for long screws

Info

Publication number: CN210115681U
Application number: CN201920761113.1U
Authority: CN
Inventors: 孙国泰; 杜伟伟; 周晔
Original assignee: Henan Stellar Hydraulic Co Ltd
Current assignee: Henan Hengchuang Precision Manufacturing Co ltd
Priority date: 2019-05-24
Filing date: 2019-05-24
Publication date: 2020-02-28
Anticipated expiration: 2029-05-24

Abstract

The utility model discloses an automatic chamfer undergauge device of long screw, receiving device is located the place ahead of beveler, the beveler is located automatic feeding device's the place ahead, automatic feeding device is located the place ahead of undergauge machine, storage device is located the top of beveler, be provided with the hoisting device who promotes the rod iron in the receiving device to storage device on storage device's the preceding lateral wall, be provided with clamping device and material feeding unit on the beveler, and material feeding unit delivers to clamping device with the rod iron in the storage device, and this rod iron passes through clamping device and material feeding unit centre gripping, also be provided with hoisting device on automatic feeding device's the preceding lateral wall, and this hoisting device promotes the rod iron in the slope of unloading of beveler to automatic feeding device, automatic feeding device delivers to the undergauge machine with the rod iron of its top, the undergauge machine carries out the rod iron processing. The utility model has the advantages that: the machine has the advantages of high processing efficiency, low labor intensity and low production cost.

Description

Automatic chamfering and reducing device for long screws

Technical Field

The utility model relates to a long screw processing technology field, especially automatic chamfer undergauge device of long screw.

Background

In the long screw course of working, at first draw long rod iron, make long rod iron straightened, then cut long rod iron, make long rod iron become short rod iron, then carry out processes such as chamfer, undergauge, car screw thread to the rod iron in proper order again, the manufacturing procedure is many, traditional processing method, each station needs an operation workman at least, this operation workman need accomplish the work piece clamping, the work piece is dismantled, the work piece transport, its work efficiency is not high, and intensity of labour is very big moreover, and manufacturing cost is also high.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's shortcoming, provide an automatic chamfer undergauge device of long screw that machining efficiency is high, intensity of labour is low.

The purpose of the utility model is realized through the following technical scheme: the long screw automatic chamfering and reducing device comprises a material receiving device, a lifting device, a material storing device, a chamfering machine, an automatic feeding device and a reducing machine, wherein the material receiving device is positioned in front of the chamfering machine after the steel bar is conveyed, the chamfering machine is positioned in front of the automatic feeding device, the automatic feeding device is positioned in front of the reducing machine, the material storing device is positioned above the chamfering machine, the front side wall of the material storing device is provided with the lifting device for lifting the steel bar in the material receiving device to the material storing device, the chamfering machine is provided with a clamping device and a material feeding device, the clamping device is positioned in front of the material feeding device, the material feeding device conveys the steel bar in the material storing device to the clamping device, the steel bar is clamped by the clamping device and the material feeding device, the front side wall of the automatic feeding device is also provided with the lifting device, and the lifting device lifts the steel bar in a discharging slope of the chamfering machine to the automatic feeding device, the automatic feeding device sends the steel bar above the automatic feeding device to a diameter reducing machine, and the diameter reducing machine reduces the diameter of the steel bar.

Preferably, the material receiving device comprises a material receiving frame, a material receiving chute convenient for the steel bar to roll off is arranged on the material receiving frame, and a notch convenient for the lifting device to lift the steel bar is formed in the material falling end of the material receiving chute;

the storage device comprises a storage frame, a storage chute is arranged on the storage frame, the two sides of the blanking end of the storage chute are provided with vertical material clamping grooves, the material clamping grooves are fixed on the side wall of the processing groove corresponding to the chamfering machine, a lifting device is arranged on the front side wall of the storage frame, and the steel bar positioned in the notch is lifted to the storage frame by the lifting device.

Preferably, the automatic feeding device comprises a steel bar placing frame, a horizontal moving block and a U-shaped frame, a storage slope is installed at the top of the steel bar placing frame, a lifting device is installed on the front side wall of the steel bar placing frame, a discharging slope is arranged at the bottom of a processing groove of the chamfering machine, a discharging chute is installed at the slope bottom of the discharging slope, the lifting device lifts a steel bar located in the discharging chute into the storage slope, and the U-shaped frame is installed on the steel bar placing frame;

the U-shaped frame comprises a first transverse frame, a connecting rod and a second transverse frame, the first transverse frame is transversely arranged on the steel bar placing frame, the second transverse frame is transversely arranged on a rear side frame of the steel bar placing frame, the first transverse frame and the second transverse frame are connected through the connecting rod, at least two horizontal guide posts which are arranged in parallel are further arranged between the first transverse frame and the second transverse frame, and horizontal moving blocks are in sliding fit with the horizontal guide posts;

the horizontal telescopic cylinder is installed on the front side wall of the first cross frame, the horizontal telescopic rod of the horizontal telescopic cylinder horizontally penetrates through the first cross frame and is connected with the horizontal moving block, the vertical telescopic cylinder is installed at the bottom of the horizontal moving block, the vertical telescopic rod of the vertical telescopic cylinder vertically penetrates through the horizontal moving block and is connected with the vertical moving block, the vertical moving block is located above the horizontal moving block, at least two ejector plates which are parallel and horizontally arranged are installed on the vertical moving block, an ejector block is installed at the rear end of the ejector plate, a rod trough is formed in the top of the ejector block, the rear end face of the ejector block is provided with a material pushing inclined plane, material blocking blocks are arranged on two sides of the slope bottom of the storage slope, the rod trough is located below the slope bottom of the storage slope, the vertical telescopic cylinder works, and the ejector block.

Preferably, the lifting device comprises a lifting cylinder, a connecting plate, a second-stage lifting plate, a material blocking frame, a guide plate and a guide rod, wherein the second-stage lifting plate is arranged on two side walls of the connecting plate, the bottom of the connecting plate is connected with a piston rod of the lifting cylinder, the second-stage lifting plate comprises a first-stage ejector plate and a second-stage ejector plate which are integrally formed, the second-stage ejector plate is positioned behind the first-stage ejector plate, the top of the second-stage ejector plate is an ejector inclined plane, the top of the first-stage ejector plate is an ejector step, the horizontal height of the ejector inclined plane is higher than the height of the ejector step, the guide plate is arranged on each of the front side wall of the storage frame and the front side wall of the steel bar placing frame, the guide rod is vertically arranged on the guide plate, the guide block is arranged on the rear side wall of the connecting plate, the guide groove is formed in the guide block, the guide groove of the guide block, the second grade lifting plate is located between two material blocking racks of the same lifting device, the material blocking racks comprise a first material blocking plate and a second material blocking plate which are integrally formed, the top of the second material blocking plate is higher than the top of the first material blocking plate, transition steps are formed at the tops of the first material blocking plate and located above the material ejection inclined plane, the front end face of the first material blocking plate located on the front side wall of the material storage rack is tightly attached to the rear end face of the material receiving rack, and the front end face of the first material blocking rod located on the front side wall of the steel rod placing rack is tightly attached to the rear end face of the discharging chute.

Preferably, the clamping device and the feeding device are arranged on two side walls of the processing groove, the feeding device comprises a driving device and a guiding device, the guiding device comprises a guide rail and a material pushing block, the material pushing block is provided with a guide groove in sliding fit with the guide rail, and the feeding end of the material pushing block is provided with a first clamping arc; the driving device comprises a servo motor, a rotating shaft, a first connecting rod and a second connecting rod, the servo motor drives the rotating shaft to rotate positively and negatively, the servo motor is arranged on one side of the chamfering machine, one end of the first connecting rod is hinged with the material pushing block, the other end of the first connecting rod is hinged with one end of the second connecting rod, and the other end of the second connecting rod is fixedly connected with the rotating shaft;

the clamping device comprises a mounting plate, the mounting plate is mounted on the side walls of the two ends of a machining groove of the chamfering machine, a limiting cavity for limiting the stroke of the material ejecting device is arranged on the mounting plate, a clamping plate is arranged at the clamping end of the mounting plate, a clamping piece is mounted on the clamping plate, a second clamping arc corresponding to the first clamping arc is arranged on the clamping piece, and the first clamping arc and the corresponding second clamping arc clamp the steel bar under the action of the driving device.

Preferably, the clamping plate is provided with a groove, the groove is provided with a limiting groove, and the outer edge of the clamping piece is provided with a limiting lug clamped in the limiting groove.

Preferably, the liftout device is including restoring to the throne board and reset spring, the guiding hole has been seted up on the both ends wall around the spacing chamber, the both ends sliding fit that restores to the throne board is in the guiding hole, be located the spacing intracavity be provided with the stopper on the board that restores to the throne, reset spring's one end is supported on the rear end lateral wall in spacing chamber, reset spring's the other end is supported on the stopper, the arc groove has been seted up to the liftout end that restores to the throne board, the rear end side wall mounting of mounting panel has an apron, the U-shaped groove has been seted up on the mounting panel, spacing chamber is constituteed.

Preferably, the necking machine includes the frame, set up the working chamber of processing rod iron in the frame, install the undergauge mechanism on the left side wall of working chamber, still install the centre gripping fixing device of centre gripping rod iron in the working chamber, centre gripping fixing device includes the centre gripping hydro-cylinder, go up grip block and lower grip block, horizontal telescopic cylinder work, deliver to lower grip block with the rod iron in the stick silo, the top at the frame is installed to the centre gripping hydro-cylinder, lower grip block is installed on the lower lateral wall of working chamber, the hydraulic stem of centre gripping hydro-cylinder passes the top of frame and is connected with last grip block, it is located the working chamber to go up the grip block, lower centre gripping groove has been seted up on the upper surface of lower grip block, go up the centre gripping groove and has been seted up to the upper surface of last grip block, the rod is pressed from both sides tightly through last centre gripping groove.

Preferably, the undergauge mechanism includes the undergauge tool bit, hydraulic cylinder installs in the frame, hydraulic cylinder's hydraulic telescoping shaft passes the left end lateral wall of working chamber and is connected with the undergauge tool bit, the reducing hole has been seted up on the undergauge tool bit, the undergauge end of rod iron carries out the undergauge through the reducing hole, install the support frame on the last lateral wall of working chamber, install the guiding axle on the support frame, the other end of guiding axle is installed on the left side wall of working chamber, and the guiding axle is parallel with the hydraulic telescoping shaft, the leading truck is installed to the left end portion of undergauge tool bit, the guiding hole has been seted up on the leading truck, guiding axle sliding fit is in the.

Preferably, the front end of the horizontal guide column is provided with a limit step for limiting the stroke of the horizontal moving block, the top of the horizontal moving block is provided with a vertical guide column, the vertical moving block is provided with a guide hole in sliding fit with the vertical guide column, and the vertical guide column is in sliding fit in the guide hole.

The utility model has the advantages of it is following: the utility model relates to an automatic chamfering and reducing device for long screws, which is provided with a receiving device, a storing device, a chamfering machine, an automatic feeding device and a reducing machine, and the front side wall of the material storage device is provided with a lifting device for lifting the steel bar in the material receiving device to the material storage device, and the front side wall of the automatic material loading device is also provided with a lifting device, so that the steel bar is lifted from the material receiving device to the material storage device through the lifting device, then the steel bar is automatically processed by the chamfering machine, the processed steel bar is sent to the automatic feeding device by the lifting device, the automatic feeding device sends the steel bar to the reducing machine, then the reducing machine carries out the undergauge processing to the rod iron, and the rod iron need not artifical clamping work piece at undergauge and chamfer in-process, need not artifical dismantlement work piece, need not artifical transport work piece to improve the chamfer of rod iron and the machining efficiency of undergauge by a wide margin, reduced intensity of labour.

Drawings

FIG. 1 is a schematic structural diagram of the present invention

FIG. 2 is a schematic structural view of a front end side wall mounting lifting device of a storage rack

FIG. 3 is a schematic view of the lifting device;

FIG. 4 is a schematic structural view of a secondary lift plate;

fig. 5 is a schematic structural view of the material blocking frame;

FIG. 6 is a schematic structural view of the clamping device;

FIG. 7 is a schematic structural diagram of an ejection device;

FIG. 8 is a first schematic view of the installation of the clamping block;

FIG. 9 is a second schematic view of the mounting of the clamping block;

FIG. 10 is a schematic cross-sectional view of A-A in FIG. 7

FIG. 11 is a schematic view of the position of the automatic feeding device and the diameter reducer;

FIG. 12 is a schematic view of the structure of the automatic feeding device when feeding the reducing machine;

FIG. 13 is a schematic view of a diameter reducer;

FIG. 14 is a schematic structural view of a U-shaped frame;

FIG. 15 is a schematic view of the structure of the ejector block

In the figure, 1-discharge slope, 2-clamping device, 3-feeding device, 4-clamping groove, 5-pushing block, 6-first connecting rod, 7-second connecting rod, 8-rotating shaft, 9-servo motor, 10-guide rail, 11-first clamping circular arc, 12-processing groove, 13-discharge chute, 21-mounting plate, 22-limiting cavity, 23-clamping plate, 24-limiting block, 25-reset spring, 26-reset plate, 27-cover plate, 28-circular arc groove, 29-clamping piece, 30-second clamping circular arc, 31-limiting lug, 32-limiting groove, 101-material receiving frame, 102-material receiving chute, 103-secondary lifting plate, 104-lifting cylinder, 105-connecting plate, 106-guide block, 107-guide rod, 108-guide plate, 109-material blocking frame, 110-material storage frame, 111-material storage chute, 131-first-level material ejecting plate, 132-second-level material ejecting plate, 133-material ejecting step, 134-material ejecting inclined plane, 191-first material blocking plate, 192-transition step, 193-second material blocking plate, 100-blanking device, 200-lifting device, 300-material storage device, 400-chamfering machine, 501-steel bar placing frame, 502-material storing slope, 503-U-shaped frame, 504-horizontal guide column, 505-horizontal moving block, 506-horizontal telescopic rod, 507-vertical telescopic cylinder, 508-horizontal telescopic cylinder, 509-material ejecting plate, 510-vertical guide column and 511-vertical moving block, 512-vertical telescopic rod, 513-rod trough, 514-limit step, 515-ejector block, 516-material blocking block, 517-material pushing inclined plane, 531-first cross frame, 532-connecting rod, 533-second cross frame, 500-automatic feeding device, 600-diameter reducing machine, 601-frame, 602-working cavity, 603-clamping fixing device, 604-diameter reducing mechanism, 631-clamping oil cylinder, 632-upper clamping block, 633-lower clamping block, 634-lower clamping groove, 635-upper clamping groove, 641-diameter reducing cutter head, 642-hydraulic telescopic shaft, 643-guide frame, 644-support frame, 645-guide shaft and 646-diameter reducing hole.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the present invention, the embodiments and the features of the embodiments may be combined with each other without conflict.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which the products of the present invention are conventionally placed in use, or the position or positional relationship which the skilled person conventionally understand, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element to which the reference is made must have a specific position, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1, the automatic chamfering and reducing device for long screws comprises a material receiving device 100, a lifting device 200, a material storage device 300, a chamfering machine 400, an automatic feeding device 500 and a reducing machine 600, wherein the material receiving device 100 is positioned in front of the chamfering machine 400, the chamfering machine 400 is positioned in front of the automatic feeding device 500, the automatic feeding device 500 is positioned in front of the reducing machine 600, the material storage device 300 is positioned above the chamfering machine 400, the front side wall of the material storage device 300 is provided with the lifting device 200 for lifting the steel bar in the material receiving device 100 to the material storage device 300, the chamfering machine 400 is provided with a clamping device 2 and a feeding device 3, the clamping device 2 is positioned in front of the feeding device 3, the feeding device 3 sends the steel bar in the material storage device 300 to the clamping device 2, the steel bar is clamped by the clamping device 2 and the feeding device 3, the front side wall of the automatic feeding device 500 is also provided with the lifting device 200, and the lifting device 200 lifts the steel bar in the discharging slope 1 of the chamfering machine 400 to the automatic feeding device 500, the automatic feeding device 500 sends the steel bar above the automatic feeding device to the reducing machine 600, and the reducing machine 600 reduces the steel bar.

In this embodiment, as shown in fig. 1 and fig. 2, the receiving device 100 includes a receiving rack 101, a receiving chute 102 is disposed on the receiving rack 101 for allowing the steel bar to roll off, a notch is disposed at a blanking end of the receiving chute 102 for allowing the lifting device 200 to lift the steel bar, the receiving device 100 is located at a discharge end of the steel bar shearing machine, when the long steel bar is cut into short steel bars with a desired size, the steel bar falls into the receiving chute 102, further, the receiving rack 101 is formed by welding steel sections, preferably, a rack body of the receiving rack 101 is welded by angle steel, a steel plate is welded on an upper surface of the receiving rack 101, the receiving chute 102 is formed by the steel bar and the angle steel, the angle steel at the bottom of the receiving chute 102 extends out to form a notch, the steel bar rolls into the notch under the action of gravity of the receiving chute 102, and the lifting device 200 lifts the steel bar at the notch;

in the embodiment, as shown in fig. 1, 2 and 5, the storage device 300 includes a storage rack 110, a storage chute 111 is disposed on the storage rack 110, further, the storage rack 110 is a steel profile welded vertical stand, angle steel is welded on two sides of the top of the storage rack 110, and the inner sides of the corners of the angle steel are oppositely disposed, so as to form the storage chute 111, the front end of the storage rack 110 is higher than the rear end thereof, so that the front end of the storage chute 111 is higher than the rear end, a steel rod can roll down towards the bottom of the storage chute 111 in the storage chute 111, the width of the storage chute 111 is 2-3 cm wider than the length of the steel rod, and the angle steel is 4 × 4cm, so that the steel rod is not easy to drop off during rolling, vertically disposed blocking chutes 4 are disposed on two sides of the blanking end of the storage chute 111, and the blocking chutes 4 are fixed on the side walls of the processing groove 12 corresponding to the chamfering machine 400, so that the steel rod in the storage chute 111 automatically rolls into the blocking chutes 4, the clamping trough 4 is formed by welding two steel plates on the side wall of the processing trough 12, the width of the clamping trough 4 is larger than the diameter of the steel bar, preferably, the width of the clamping trough and the diameter of the steel bar are 1-2 mm larger, a lifting device 200 is installed on the front side wall of the storage rack 110, and the steel bar located in the gap on the material receiving chute 102 is lifted to the storage rack 110 by the lifting device 200.

In this embodiment, as shown in fig. 11 and 12, the automatic feeding device 500 includes a steel bar placing frame 501, a horizontal moving block 505, and a U-shaped frame 503, a storage slope 502 is installed at the top of the steel bar placing frame 501, a lifting device 200 is installed on the front side wall of the steel bar placing frame 501, a discharging slope 1 is arranged at the bottom of a processing tank 12 of the chamfering machine 400, a discharging chute 13 is installed at the bottom of the discharging slope 1, the lifting device 200 lifts a steel bar located in the discharging chute 13 into the storage slope 502, and the U-shaped frame 503 is installed on the steel bar placing frame 501; further, the rod iron rack 501 has four vertical stands, preferably, the stand adopts the angle steel, and the storage slope 502 includes two angle steels, and the inboard of the department of buckling of two angle steels sets up relatively, and the interval between two angle steels is only longer than the length of rod iron 2~3cm, and the angle steel adopts 4 x 4 cm's angle steel, thereby make the both ends of rod iron be located the angle steel all the time, thereby can avoid the rod iron to roll out the storage slope 502, and can form a breach between two angle steels, so that the liftout of material block 515, the fender material block 516 is installed on the terminal surface of the angle steel slope bottom that corresponds, the front end height of storage slope 502 is higher than the height of storage slope 502 rear end, consequently, the rod iron can roll towards the slope bottom of storage slope 502 under the effect of gravity, after the rod iron rolls to the slope bottom, then is kept off by fender material block 516.

In this embodiment, as shown in fig. 14, the U-shaped frame 503 includes a first cross frame 531, a connecting rod 532 and a second cross frame 533, the first cross frame 531 is transversely installed on the front side frame of the steel bar placing frame 501, a vertically placed steel frame is welded on the front end portion of the steel bar placing frame 501 for facilitating the installation of the first cross frame, the first cross frame is installed on the steel frame, the second cross frame 533 is transversely installed on the rear side frame of the steel bar placing frame 501, the first cross frame 531 and the second cross frame 533 are connected by the connecting rod 532, therefore, the first cross frame 531, the second cross frame 533 and the connecting rod 532 can increase the structural strength of the steel bar placing frame 501, furthermore, at least two parallel horizontal guiding columns 504 are installed between the first cross frame 531 and the second cross frame 533, the horizontal moving blocks 505 are slidably fitted on the horizontal guiding columns 504, the horizontal moving blocks 505 are in a suspended state, so that the horizontal moving blocks 505 are supported by the horizontal guiding columns 504, further, a horizontal telescopic cylinder 508 is installed on the front side wall of the first cross frame 531, a horizontal telescopic rod 506 of the horizontal telescopic cylinder 508 horizontally penetrates through the first cross frame 531 and is connected with a horizontal moving block 505, so that the horizontal telescopic cylinder 508 works, the horizontal moving block 505 can horizontally move along the horizontal guide column 504, and further, a limit step 514 for limiting the stroke of the horizontal moving block 505 is arranged at the front end of the horizontal guide column 504.

In this embodiment, a vertical telescopic cylinder 507 is installed at the bottom of the horizontal moving block 505, a vertical telescopic rod 512 of the vertical telescopic cylinder 507 vertically penetrates through the horizontal moving block 505 and is connected with a vertical moving block 511, the vertical moving block 511 is located above the horizontal moving block 505, the horizontal telescopic cylinder 508 and the vertical telescopic cylinder 507 both realize linear motion, and there are many cylinders for realizing the linear motion on the market, so the horizontal telescopic cylinder 508 and the vertical telescopic cylinder 507 are commercially available products, and when the vertical telescopic cylinder 507 works, so that the vertical moving block 511 can be vertically moved up and down, and further, to ensure the moving straightness of the vertical moving block 511, the top of the horizontal moving block 505 is provided with a vertical guide post 510, the vertical moving block 511 is provided with a guide hole in sliding fit with the vertical guide post 510, and the vertical guide post 510 is in sliding fit in the guide hole.

In this embodiment, in order to realize the transportation of the bar stock, at least two ejector plates 509 which are parallel and horizontally arranged are further installed on the vertical moving block 511, an ejector block 515 is installed at the rear end of the ejector plate 509, a bar trough 513 is installed at the top of the ejector block 515, as shown in fig. 15, a material pushing inclined plane 517 is installed on the rear end surface of the ejector block 515, material blocking blocks 516 are arranged on two sides of the slope bottom of the storage slope 502, the bar trough 513 is located below the slope bottom of the storage slope 502, the vertical telescopic cylinder 507 works, and the steel bar located above the bar trough 513 is ejected out of the storage slope 502 by the ejector block 515; the stick silo 513 is the semicircle groove, its diameter is the same with the diameter of rod iron, vertical telescopic cylinder 507 works, vertical movable block 511 goes upward, thereby it goes upward to drive liftout plate 509 and liftout piece 515, liftout piece 515 goes upward, thereby make the rod iron of storage slope 502 bottom pushed in the bar silo 513, vertical telescopic cylinder 507 continues work this moment, liftout piece 515 continues to go upward, and make the rod silo 513 in the rod silo bottom be higher than the height on material blocking piece 516 and ground with the height on ground, this moment, vertical telescopic cylinder 507 stop work, horizontal telescopic cylinder 508 works, horizontal telescopic link 506 stretches out, thereby make the rod iron in the stick silo 513 move toward undergauge 600.

In this embodiment, as shown in fig. 1 to 4, the lifting device 200 includes a lifting cylinder 104, a connecting plate 105, a second-stage lifting plate 103, a material blocking frame 109, a guide plate 108 and a guide column, the second-stage lifting plate 103 is installed on two side walls of the connecting plate 105, the bottom of the connecting plate 105 is connected with a piston rod of the lifting cylinder 104, and when the cylinder works, the connecting plate 105 is driven to move up and down.

In this embodiment, as shown in fig. 1 to 4, the second-stage lifting plate 103 includes a first-stage ejector plate 131 and a second-stage ejector plate 132 that are integrally formed, the second-stage ejector plate 132 is located behind the first-stage ejector plate 131, the top of the second-stage ejector plate 132 is an ejector inclined plane 134, the top of the first-stage ejector plate 131 is an ejector step 133, the upper surface of the ejector step 133 is an inclined plane that is higher in front and lower in back, the horizontal height of the ejector inclined plane 134 is higher than the height of the ejector step 133, the initial position of the ejector step 133 is located below the notch of the blanking end of the receiving chute 102, when the air cylinder operates, the piston rod moves upwards, so that the ejector step 133 lifts the steel rod, because the upper surface of the ejector step 133 is an inclined plane that is higher in front and lower in back, so that the steel rod does not roll out of the ejector step 133, further, the material blocking frames 109 are further installed on the front side wall of the steel rod frame 110 and the front side wall of the steel, the material blocking frame 109 comprises a first material blocking plate 191 and a second material blocking plate 193 which are integrally formed, the top of the second material blocking plate 193 is higher than the top of the first material blocking plate 191, a transition step 192 is formed at the top of the first material blocking plate 191 and is positioned above the material ejecting inclined plane 134, the front end surface of the first material blocking plate 191 on the front side wall of the material receiving frame 110 is tightly attached to the rear end surface of the material receiving frame 101, the front end surface of the first material blocking rod on the front side wall of the steel rod placing frame 501 is tightly attached to the rear end surface of the discharging chute 13, so that when the first-level material ejecting plate 131 is positioned below the steel rod, the steel rod in the material receiving frame 101 cannot roll out of the material receiving frame 101, the steel rod in the discharging chute 13 cannot roll out of the discharging chute 13, further, a guide plate 108 is respectively arranged on the front side wall of the material receiving frame 110 and the front side wall of the steel rod placing frame 501, a guide rod 107 is vertically arranged on the guide plate 108, and a guide block 106, the guide block 106 is provided with a guide groove, the guide groove of the guide block 106 is in sliding fit with the guide rod 107, so that when the air cylinder works, the connecting plate 105 is driven to lift, and the guide groove is in sliding fit with the guide rod 107, so that the lifting straightness of the connecting plate 105 is ensured, further, a vertical plane where the front end face of the first material baffle 191 is located is intersected with the surface of the material ejecting step 133, so that in the lifting process of the steel rod, the steel rod is always attached to the front end face of the first material baffle 191, and when the material ejecting step 133 is lifted, part of the inclined plane of the material ejecting step 133 is overlapped with part of the inclined plane of the transition step 192, so that the steel rod can conveniently roll into the transition step 192; further, the initial position of the topping slope 134 is below the steel bar on the transition step 192, when the cylinder works, the steel bar on the transition step 192 is lifted upwards by the ejection inclined plane 134, the steel bar is clamped by the ejector inclined plane 134 and the front end face of the second retainer plate 193, so that the steel bar cannot roll, after the bottom of the top slope of the second baffle plate 193 at the front end of the storage rack 110 is flush with the slope of the storage chute 111, the steel bar rolls into the storage chute 111 from the top slope of the second retainer plate 193, and in the same way, after the bottom of the top inclined plane of the second retainer plate 193 at the front end of the steel bar placing frame 501 is flush with the inclined plane of the storage slope 502, the steel rod rolls from the top bevel of the second retainer plate 193 into the storage ramp 502, and at this time, the bevel of the topping step 133 is higher than the bevel of the corresponding transition step 192, so that the steel bar on the ejecting step 133 can be lifted to the transition step 192 in the descending process of the cylinder.

Preferably, as shown in fig. 6, a clamping device 2 and a feeding device 3 are disposed on both side walls of the processing groove 12, the feeding device 3 includes a driving device and a guiding device, the guiding device includes a guiding rail 10 and a pushing block 5, the pushing block 5 is provided with a guiding groove slidably matched with the guiding rail 10, further, the guiding rail 10 is a trapezoidal rail, and the pushing block 5 is provided with a dovetail groove matched with the trapezoidal rail, so as to ensure the guiding precision of the pushing block 5 and prevent the pushing block 5 from falling off from the upper side of the guiding rail 10, and the feeding end of the pushing block 5 is provided with a first clamping arc 11; preferably, the upper surface of the pusher block 5 is flush with the lower surface of the clamping groove 4, so that when the pusher block 5 is located below the clamping groove 4, the bottom of the clamping groove 4 is sealed by the upper surface of the pusher block 5, so that the steel rod spans over the two clamping grooves 4, and when the pusher block 5 is separated from the clamping groove 4, the steel rod falls under the self-gravity.

As shown in fig. 1, 2 and 6, the driving device includes a servo motor 9, a rotating shaft 8, a first connecting rod 6 and a second connecting rod 7, the servo motor 9 drives the rotating shaft 8 to rotate forward and backward, the servo motor 9 is installed at one side of the chamfering machine 400, one end of the first connecting rod 6 is hinged with the material pushing block 5, the other end of the first connecting rod 6 is hinged with one end of the second connecting rod 7, and the other end of the second connecting rod 7 is fixedly connected with the rotating shaft 8; when the servo motor 9 rotates to drive the second connecting rod 7 to rotate, the second connecting rod 7 rotates to drive the first connecting rod 6 to rotate, so that the material pushing block 5 makes linear motion along the guide rail 10 to complete feeding of the steel bar, in the embodiment, the rotating speed of the servo motor 9 is low, so that the stability of feeding of the steel bar can be ensured, the servo motor 9 makes positive and negative intermittent rotation, when the servo motor 9 makes counterclockwise rotation, the material pushing block 5 pushes the steel bar to move towards the second clamping arc 30 under the action of the first connecting rod 6 and the second connecting rod 7, when the steel bar reaches the braking position and is clamped and fixed by the first clamping arc 11 and the second clamping arc 30, the servo motor 9 stops working, when chamfering of the steel bar is completed, the servo motor 9 makes clockwise rotation to drive the material pushing block 5 to reset, when the material pushing block 5 resets, the servo motor 9 stops moving, and then, repeatedly moving, so that the steel bars are orderly fed, and only one steel bar is fed at a time.

In this embodiment, as shown in fig. 7 to 10, the clamping device 2 includes a mounting plate 21, the mounting plate 21 is mounted on the side walls of the two ends of the processing groove 12 of the chamfering machine 400, preferably, the mounting plate 21 is provided with a screw, the screw is mounted in the screw hole, the chamfering machine 400 is provided with a screw hole matched with the screw, the mounting plate 21 is mounted on the chamfering machine 400 through the screw, the mounting plate 21 is provided with a limit cavity 22 for limiting the stroke of the ejector, the clamping end of the mounting plate 21 is provided with a clamping plate 23, the clamping plate 23 is provided with a clamping member 29, the clamping member 29 is provided with a second clamping arc 30 corresponding to the first clamping arc 11, the arc surface of the first clamping arc 11 is opposite to the arc surface of the second clamping arc 30, when the material pushing block 5 pushes the steel bar to move and abut against the second clamping arc 30, the first clamping arc 11 and the corresponding second clamping arc 30 clamp the steel bar under the action of the material feeding device 3, thereby fixing the position of the steel bar, facilitating the chamfering machine 400 to chamfer the steel bar, facilitating the clamping of the steel bar, wherein the first clamping arc 11 is a minor arc or a semicircular arc, the second clamping arc 30 is a minor arc or an arc, and the radiuses of the first clamping arc 11 and the second clamping arc 30 are the same as the radius of the steel bar, preferably, the first clamping arc 11 is a minor arc, and the radian is pi/~ pi/, so that after the steel bar is clamped, the steel bar can be clamped under the action of the first clamping arc 11 and the second clamping arc 30, and the clamping force can not be changed due to the slight change of the size of the steel bar, the clamping plate 23 is provided with a groove, the groove is provided with a limit groove 32, the outer edge of the clamping member 29 is provided with a limit bump 31 clamped in the limit groove 32, during the installation, the limit bump 31 is aligned to the limit groove 32, and the limit bump 31 is clamped in the limit groove 32, therefore, the clamping piece 29 serving as an easily worn part is convenient to install and maintain, and the axial movement of the clamping piece 29 can be avoided through the limiting lug 31 and the limiting groove 32, so that the stability of the installation position of the clamping piece 29 is ensured.

In this embodiment, as shown in fig. 7 to 10, the material ejecting device includes a reset plate 26 and a reset spring 25, guide holes are formed on the front and rear side walls of the limit cavity 22, two ends of the reset plate 26 are slidably fitted in the guide holes, a limit block 24 is disposed on the reset plate 26 located in the limit cavity 22, one end of the reset spring 25 abuts against the rear side wall of the limit cavity 22, the other end of the reset spring 25 abuts against the limit block 24, an arc groove 28 is formed at the material ejecting end of the reset plate 26, when the material pushing block 5 is at the initial position, the steel rod is located right below the material clamping groove 4, one side of the falling steel rod is clamped by a second clamping arc 30, and the other side of the steel rod is clamped by the arc groove 28, when the material pushing block 5 is fed under the action of the driving device, the reset plate 26 retracts, the reset spring 25 is compressed at this time, the reset spring 25 applies a spring force to the reset plate 26, so that the arc groove 28 always supports against the steel bar to prevent the steel bar from falling in the feeding process, when the steel bar is processed, the material pushing block 5 resets under the action of the driving device, the reset plate 26 resets under the action of the spring force, the material pushing block 5 slides by the driving device, the resetting speed of the material pushing block is higher than the resetting speed of the reset plate 26, therefore, the first clamping arc 11 on the material pushing block 5 is firstly separated from one side of the steel bar, the reset spring 25 is propped against the other side of the steel bar, when the reset plate 26 resets, the steel bar can be pushed to be separated from the second clamping arc 30, one end of the steel bar is inclined due to the absence of the material jacking action of the reset plate 26, so that the steel bar falls into the discharging slope 1 of the chamfering machine 400 under the action of self gravity and rolls into the discharging chute 13, further, the arc groove 28 is a minor arc or a semicircular arc, and the radius of circular arc groove 28 is the same with the radius of rod iron, and is preferred, and circular arc groove 28 is minor arc, and the radian is between pi/~pi/, and the rear end side wall of mounting panel 21 installs a apron 27, has seted up the U-shaped groove on the mounting panel 21, and spacing chamber 22 is constituteed with the lateral wall in U-shaped groove to the preceding lateral wall of apron 27, through dismouting apron 27, just can dismantle the liftout device to make the liftout device easy dismounting, easily change.

In this embodiment, as shown in fig. 13, the diameter reducing machine 600 includes a frame 601, a working chamber 602 for processing the steel rod is disposed on the frame 601, a diameter reducing mechanism 600 is disposed on a left side wall of the working chamber 602, a clamping fixture 603 for clamping the steel rod is further disposed in the working chamber 602, the clamping fixture 603 includes a clamping cylinder 631, an upper clamping block 632, and a lower clamping block 633, the horizontal telescopic cylinder 508 works to deliver the steel rod in the rod trough 513 to the lower clamping block 633, the clamping cylinder 631 is disposed at a top of the frame 601, the lower clamping block 633 is disposed on a lower side wall of the working chamber 602, a hydraulic rod of the clamping cylinder 631 passes through the top of the frame 601 and is connected to the upper clamping block 632, the upper clamping block 632 is disposed in the working chamber 602, the upper clamping block 632 clamps the steel rod disposed on the upper clamping block 632 under the action of the clamping cylinder 631, the upper clamping block 632 is also linearly moved, the clamping cylinder may also be a cylinder commonly used in the market, when the clamping cylinder 631 works, so that the upper clamping block 632 moves towards the lower clamping block 633 to finally clamp the steel rod, further, the upper surface of the lower clamping block 633 is provided with a lower clamping groove 634, the upper surface of the upper clamping block 632 is provided with an upper clamping groove 635, the steel rod is clamped by the upper clamping groove 635 and the lower clamping groove 634, the lower clamping groove 634 is a semi-circular groove, the diameter of the lower clamping groove 634 is the same as that of the steel rod, the upper clamping groove 635 is preferably a minor arc groove, and the radius of the minor arc groove is the same as that of the steel rod, so that the steel rod can be better clamped by the upper clamping groove 635 and the lower clamping groove 634, during the steel rod processing process, the clamping cylinder 631 acts on the upper clamping block 632 all the time, so that the steel rod is always close to the upper clamping groove 635 and the lower clamping groove 634, when the cutter head 641 applies an axial force to the steel rod, the steel rod can be stably clamped by the upper clamping groove 635 and the lower clamping groove 634, thereby ensuring the diameter reducing quality of the steel bar.

In this embodiment, as shown in fig. 13, the reducing mechanism 604 includes a reducing tool bit 641 and a hydraulic cylinder, the hydraulic cylinder is installed in the frame 601, a hydraulic telescopic shaft 642 of the hydraulic cylinder passes through the left end side wall of the working chamber 602 and is connected to the reducing tool bit 641, a reducing hole 646 is formed in the reducing tool bit 641, the reducing end of the steel rod is reduced in diameter through the reducing hole 646, the size of the reducing hole 646 is determined according to the size of the long screw to be processed, the large hollow end of the reducing hole 646 must be larger than the diameter of the steel rod so as to enable the steel rod to enter the reducing hole 646, the reducing tool bit 641 moves linearly during reducing the steel rod, so that the hydraulic cylinder can be implemented by selecting a hydraulic cylinder commonly used in the market, and the working principle of the hydraulic cylinder is clear to those skilled in the art, and therefore, in order to ensure the linearity of the movement of the reducing tool bit 641, the upper side wall of the working cavity 602 is provided with a support frame 644, the support frame 644 is provided with a guide shaft 645, the other end of the guide shaft 645 is arranged on the left side wall of the working cavity 602, the guide shaft 645 is parallel to the hydraulic telescopic shaft 642, the left end part of the reducing cutter head 641 is provided with a guide frame 643, the guide frame 643 is provided with a guide hole, the guide shaft 645 is in sliding fit in the guide hole, and the guide shaft 645 is in sliding fit with the guide hole, so that the moving straightness of the reducing cutter head 641 is ensured, furthermore, the two guide shafts 645 are provided, the guide frame 643 is a claw fork, and the two ends of the claw fork are provided with guide holes, so that the straightness of the reducing cutter head 641 can be further improved, and the hydraulic telescopic shaft 642 can be prevented from being bent under the self gravity effect, so that the service life of the hydraulic oil cylinder is prolonged.

The working process of the utility model is as follows: the steel bar falling into the receiving chute 102 is lifted into the storage chute 111 by the lifting device 200 positioned in front of the storage rack 110, the steel bar rolls along the storage chute 111 under the action of self gravity and finally rolls into the material clamping groove 4, the steel bar positioned at the bottom of the material clamping groove is reset by the material pushing block 5, the steel bar falls into the first clamping arc 11 and is clamped by the first clamping arc 11 and the arc groove 28 on the reset plate 26, when the servo motor 9 rotates anticlockwise, the material pushing block 5 pushes the steel bar to move towards the second clamping arc 30 under the action of the first connecting rod 6 and the second connecting rod 7, when the steel bar reaches the positioning position and is clamped and fixed by the first clamping arc 11 and the second clamping arc 30, the servo motor 9 stops working, the chamfering machine 400 works at the moment, the end face of the steel bar is chamfered, and after the chamfering is finished, the servo motor 9 rotates clockwise, thereby driving the pushing block 5 to reset, the chamfered steel bar is pushed into the discharging slope 1 under the action of the reset plate 26 and rolls into the discharging chute 13, the lifting device 200 positioned in front of the steel bar placing rack 501 lifts the steel bar in the discharging chute 13 to the storage slope 502, the steel bar rolls into the slope bottom of the storage slope 502 and is blocked by the blocking block 516, the vertical telescopic cylinder 507 works, the vertical moving block 511 ascends to drive the ejecting plate 509 and the ejecting block 515 to ascend, the ejecting block 515 ascends to push the steel bar at the bottom of the storage slope 502 into the bar groove 513, at this time, the vertical telescopic cylinder 507 continues to work, the ejecting block 515 continues to ascend, and the height between the bottom of the steel bar in the bar groove 513 and the ground is higher than the height between the blocking block 516 and the ground, so that the steel bar can cross the blocking block 516, and then the vertical telescopic cylinder 507 stops working, the horizontal telescopic cylinder 508 works, the horizontal telescopic rod 506 extends out, so that the steel rod in the rod trough 513 moves towards the clamping and fixing device 603, when the material pushing block 515 moves towards the clamping and fixing device 603, the steel rod on the material storage slope 502 can automatically roll into the bottom of the material storage slope 502, after the material pushing slope 517 is contacted with the steel rod in the lower clamping groove 634, the processed steel rod is pushed out of the lower clamping groove 634 by the material pushing slope 517, the discharging of the steel rod is completed, then the horizontal telescopic cylinder 508 continues to work, when the steel rod in the rod trough 513 moves to the upper part of the lower clamping groove 634, the horizontal telescopic cylinder 508 stops working, then the vertical telescopic cylinder 507 resets, the steel rod in the rod trough 513 falls into the lower clamping groove 634, then the horizontal telescopic cylinder 508 resets, when the horizontal telescopic cylinder 508 resets, the clamping cylinder 631 works to clamp the steel rod in the lower clamping groove 634, then hydraulic cylinder work accomplishes the undergauge of rod iron, and after the rod iron undergauge was accomplished, centre gripping hydro-cylinder 631 and hydraulic cylinder reset, accomplished the automatic undergauge and the automatic chamfer of rod iron, at rod iron undergauge and chamfer in-process, need not artifical clamping work piece, need not artifical the dismantlement work piece, need not artifical transport work piece to the chamfer of rod iron and the machining efficiency of undergauge have been improved by a wide margin, have reduced intensity of labour.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. Automatic chamfer undergauge device of long screw, its characterized in that: the automatic chamfering machine comprises a material receiving device, a lifting device, a material storage device, a chamfering machine, an automatic feeding device and a reducing machine, wherein the material receiving device is positioned in front of the chamfering machine after the steel bar is conveyed in the direction of the steel bar, the chamfering machine is positioned in front of the automatic feeding device, the automatic feeding device is positioned in front of the reducing machine, the material storage device is positioned above the chamfering machine, the front side wall of the material storage device is provided with the lifting device for lifting the steel bar in the material receiving device to the material storage device, the chamfering machine is provided with a clamping device and a feeding device, the clamping device is positioned in front of the feeding device, the feeding device sends the steel bar in the material storage device to the clamping device, the steel bar is clamped by the clamping device and the feeding device, the front side wall of the automatic feeding device is also provided with the lifting device, and the lifting device lifts the steel bar in the discharging slope of the chamfering machine to the automatic feeding device, the automatic feeding device sends the steel bar above the automatic feeding device to the diameter reducing machine, and the diameter reducing machine reduces the diameter of the steel bar.

2. The automatic chamfer reducing device of long screw of claim 1, characterized in that: the material receiving device comprises a material receiving frame, a material receiving chute convenient for the steel bar to roll off is arranged on the material receiving frame, and a notch convenient for the lifting device to lift the steel bar is formed in the material receiving end of the material receiving chute;

the storage device comprises a storage frame, a storage chute is arranged on the storage frame, the two sides of the blanking end of the storage chute are provided with vertical material clamping grooves, the material clamping grooves are fixed on the side walls of the processing grooves corresponding to the chamfering machines, the front side wall of the storage frame is provided with the lifting device, and the lifting device lifts the steel bar located in the gap to the storage frame.

3. The automatic chamfer reducing device of long screw of claim 2, characterized in that: the automatic feeding device comprises a steel bar placing frame, a horizontal moving block and a U-shaped frame, a storage slope is installed at the top of the steel bar placing frame, a lifting device is installed on the front side wall of the steel bar placing frame, a discharging slope is arranged at the bottom of a machining groove of the chamfering machine, a discharging chute is installed at the slope bottom of the discharging slope, the steel bar in the discharging chute is lifted into the storage slope by the lifting device, and the U-shaped frame is installed on the steel bar placing frame;

the U-shaped frame comprises a first cross frame, a connecting rod and a second cross frame, the first cross frame is transversely installed on the steel bar placing frame, the second cross frame is transversely installed on a rear side frame of the steel bar placing frame, the first cross frame and the second cross frame are connected through the connecting rod, at least two horizontal guide columns which are arranged in parallel are further installed between the first cross frame and the second cross frame, and horizontal moving blocks are in sliding fit with the horizontal guide columns;

a horizontal telescopic cylinder is arranged on the front side wall of the first transverse frame, a horizontal telescopic rod of the horizontal telescopic cylinder horizontally penetrates through the first transverse frame and is connected with the horizontal moving block, the bottom of the horizontal moving block is provided with a vertical telescopic cylinder, a vertical telescopic rod of the vertical telescopic cylinder vertically penetrates through the horizontal moving block and is connected with the vertical moving block, the vertical moving block is positioned above the horizontal moving block, at least two ejector plates which are parallel and horizontally arranged are arranged on the vertical moving block, the rear end of the ejector plate is provided with an ejector block, the top of the ejector block is provided with a rod trough, the rear end face of the ejector block is provided with a material pushing inclined plane, the two sides of the slope bottom of the storage slope are provided with material blocking blocks, the bar stock groove is positioned below the slope bottom of the storage slope, and the vertical telescopic cylinder works, and the material pushing block pushes the steel bar above the bar groove out of the material storing slope.

4. The automatic chamfer reducing device of long screw of claim 3, characterized in that: the lifting device comprises a lifting cylinder, a connecting plate, a second-stage lifting plate, a material blocking frame, a guide plate and a guide rod, wherein the second-stage lifting plate is arranged on two side walls of the connecting plate, the bottom of the connecting plate is connected with a piston rod of the lifting cylinder, the second-stage lifting plate comprises a first-stage ejector plate and a second-stage ejector plate which are integrally formed, the second-stage ejector plate is positioned behind the first-stage ejector plate, the top of the second-stage ejector plate is an ejector inclined plane, the top of the first-stage ejector plate is an ejector step, the horizontal height of the ejector inclined plane is higher than that of the ejector step, a guide plate is arranged on each of the front side wall of the storage frame and the front side wall of the steel bar placing frame, the guide rod is vertically arranged on the guide plate, a guide block is arranged on the rear side wall of the connecting plate, a guide groove is formed in the guide block, and the guide groove of, the material blocking frame is arranged at two ends of the front side wall of the material storage frame and the front side wall of the steel bar placing frame, the secondary lifting plate is located between two material blocking frames of the same lifting device, the material blocking frame comprises a first material blocking plate and a second material blocking plate which are integrally formed, the top of the second material blocking plate is higher than the top of the first material blocking plate, a transition step is formed at the top of the first material blocking plate, the transition step is located above the material ejecting inclined plane and located at the position, close to the front end face of the first material blocking plate on the front side wall of the material storage frame, of the rear end face of the material receiving frame, and the front end face of the first material blocking bar on the front side wall of the steel bar placing frame is close to the rear end face of the discharging chute.

5. The automatic chamfer reducing device of long screw of claim 4, characterized in that: the clamping device and the feeding device are arranged on two side walls of the processing groove, the feeding device comprises a driving device and a guiding device, the guiding device comprises a guide rail and a material pushing block, the material pushing block is provided with a guide groove in sliding fit with the guide rail, and the feeding end of the material pushing block is provided with a first clamping arc; the driving device comprises a servo motor, a rotating shaft, a first connecting rod and a second connecting rod, the servo motor drives the rotating shaft to rotate positively and negatively, the servo motor is installed on one side of the chamfering machine, one end of the first connecting rod is hinged to the material pushing block, the other end of the first connecting rod is hinged to one end of the second connecting rod, and the other end of the second connecting rod is fixedly connected with the rotating shaft;

the clamping device comprises a mounting plate, the mounting plate is mounted on the side walls of the two ends of a machining groove of the chamfering machine, a limiting cavity for limiting the stroke of the material ejecting device is arranged on the mounting plate, a clamping plate is arranged at the clamping end of the mounting plate, a clamping piece is mounted on the clamping plate, a second clamping circular arc corresponding to the first clamping circular arc is arranged on the clamping piece, and the first clamping circular arc corresponds to the second clamping circular arc which is arranged on the driving device to clamp the steel bar tightly under the action of the driving device.

6. The automatic chamfer reducing device of long screw of claim 5, characterized in that: the clamping plate is provided with a groove, the groove is provided with a limiting groove, and the outer edge of the clamping piece is provided with a limiting lug clamped in the limiting groove.

7. The automatic chamfer reducing device of long screw of claim 6, characterized in that: the liftout device is including restoring to the throne board and reset spring, the guiding hole has been seted up on the wall of both sides around the spacing chamber, the both ends sliding fit that restores to the throne board is in the guiding hole, be located be provided with the stopper on the board that restores to the throne of spacing intracavity, reset spring's one end is supported on the rear end lateral wall in spacing chamber, reset spring's the other end supports on the stopper, the circular arc groove has been seted up to the liftout end that restores to the throne board, the rear end side wall mounting of mounting panel has a apron, the U-shaped groove has been seted up on the mounting panel, the preceding lateral wall of apron and the lateral wall in U-shaped groove.

8. The automatic chamfer reducing device of long screws of claim 7, characterized in that: the reducing machine comprises a frame, a working cavity for processing the steel bar is arranged on the frame, a reducing mechanism is arranged on the left side wall of the working cavity, the working cavity is also internally provided with a clamping and fixing device for clamping the steel bar, the clamping and fixing device comprises a clamping oil cylinder, an upper clamping block and a lower clamping block, the horizontal telescopic cylinder works to convey the steel bar in the bar trough into the lower clamping block, the clamping oil cylinder is arranged at the top of the frame, the lower clamping block is arranged on the lower side wall of the working cavity, a hydraulic rod of the clamping oil cylinder penetrates through the top of the frame and is connected with the upper clamping block, the upper clamping block is positioned in the working cavity, the upper surface of the lower clamping block is provided with a lower clamping groove, an upper clamping groove is formed in the upper surface of the upper clamping block, and a steel bar is clamped tightly through the upper clamping groove and the lower clamping groove under the action of the clamping oil cylinder.

9. The automatic chamfer reducing device of long screw of claim 8, characterized in that: the reducing mechanism includes undergauge tool bit, hydraulic cylinder installs in the frame, hydraulic cylinder's hydraulic telescoping shaft passes the left end lateral wall of working chamber and with the undergauge tool bit is connected, the reducing hole has been seted up on the undergauge tool bit, and the undergauge end of rod iron passes through the reducing hole carries out the undergauge, the last side wall mounting of working chamber has the support frame, install the guiding axle on the support frame, the other end of guiding axle is installed on the left side wall of working chamber, just the guiding axle with the hydraulic telescoping shaft is parallel, the leading truck is installed to the left end portion of undergauge tool bit, the guiding hole has been seted up on the leading truck, guiding axle sliding fit is in the guiding hole.

10. The automatic chamfer reducing device of long screw of claim 9, characterized in that: the front end of the horizontal guide post is provided with a limit step for limiting the stroke of the horizontal moving block, the top of the horizontal moving block is provided with a vertical guide post, the vertical moving block is provided with a guide hole in sliding fit with the vertical guide post, and the vertical guide post is in sliding fit in the guide hole.