CN211727641U

CN211727641U - Automatic bar peeling device

Info

Publication number: CN211727641U
Application number: CN201922184569.9U
Authority: CN
Inventors: 姜少飞; 窦宇博; 彭翔; 李吉泉; 李治; 景立挺
Original assignee: Zhejiang University of Technology ZJUT
Current assignee: Zhejiang University of Technology ZJUT
Priority date: 2019-12-09
Filing date: 2019-12-09
Publication date: 2020-10-23
Anticipated expiration: 2029-12-09

Abstract

The utility model discloses an automatic device of skinning of bar. The automatic bar peeling machine comprises a machine tool and a feeding conveying roller mechanism, a feeding pinch roller mechanism, a center frame positioning mechanism and a peeling mechanism which are sequentially arranged and installed on the machine tool along the bar conveying direction, wherein a bar is fed through the feeding conveying roller mechanism, continuously pushed forward by the feeding pinch roller mechanism, positioned by the center frame positioning mechanism and finally peeled by the peeling mechanism. The utility model discloses reduce in the past artifical or tradition efficiency of cutting and the waste of manpower and materials, improved machining efficiency, reduced man-hour, reduce the cost, reduce in the follow-up processing to the bar, the bar crust is to the influence of more accurate processing, improves the practicality after the bar processing.

Description

Automatic bar peeling device

Technical Field

The utility model relates to a metal bar processing equipment field, concretely relates to automatic device of skinning of bar and method of skinning thereof.

Background

The copper bar is a material commonly used in the current Chinese industry, the application of the red copper bar is wider than that of pure iron, the red copper bar is commonly used in the electrical industry, and the red copper bar is prepared by an electrolytic method because the red copper bar needs high-purity copper, so the red copper bar can be refined by the general industry by the electrolytic method, and the purity of the red copper bar can be high by the electrolytic method, but some problems can be caused. The bar made by the common electrolytic method has poor surface quality, unevenness, cracks, air holes and an oxide layer, and the adverse factors can directly influence the processing and the subsequent use of the red copper bar. Wherein 1) surface oxidation layer: firstly, the uneven surface oxide layer is inconvenient for positioning and tightening the bar stock, so that the processing precision of the copper bar is reduced later, and the required precision cannot be achieved. Secondly, uneven surface oxide layer can lead to stress concentration on the bar stock, uneven stress can bring influence to later bearing stress. 2) Cracking: cracks can cause the rigidity and strength of the whole bar to be reduced, are fuse lines for the bar to collapse, and can also cause uneven surface stress, and are a problem to be treated in processing and subsequent use. 3) Air holes: the air holes accelerate the oxidation of the bar stock, so that the purity of the bar stock is reduced and the requirement cannot be met.

If the quality of the processed finished product is improved due to various factors, the copper bar needs to be peeled off before processing, and the copper bar can be peeled off by various methods, such as manual grinding, or acid washing and high-pressure water gun flushing. Through continuous experiments and field operations of predecessors, the inventor finds that manual polishing is low in polishing precision and high in material consumption, preparation time can be greatly prolonged and cost can be increased when large-scale red copper bars are polished, the acid pickling mode cannot control the use amount of acid and the corrosion size, and a large amount of water resources are wasted by a high-pressure water gun on the premise of inaccurate processing.

SUMMERY OF THE UTILITY MODEL

To the problem that exists among the prior art, the utility model provides a reasonable in design's an automatic device of skinning of bar and method of skinning thereof.

The technical scheme of the utility model as follows:

the utility model discloses a feeding transfer roller mechanism, feeding pinch roll mechanism, centre frame positioning mechanism and the peeling machine who installs are arranged in proper order along bar direction of delivery on lathe and the lathe, and the bar passes through the feeding of feeding transfer roller mechanism, continues to impel forward by feeding pinch roll mechanism, is fixed a position by centre frame positioning mechanism again, and the processing of skinning is carried out by peeling machine at last.

The feeding conveying roller mechanism, the feeding pinch roller mechanism, the center frame positioning mechanism and the peeling mechanism are all arranged on a machine frame of the machine tool.

The feeding conveying roller mechanism comprises a first bearing seat, a second bearing seat, a conveying roller and a conveying roller speed reduction motor, wherein the first bearing seat and the second bearing seat are installed on the frame side by side, the two ends of the conveying roller are supported between the first bearing seat and the second bearing seat, the conveying roller speed reduction motor is arranged beside the conveying roller, the output shaft of the conveying roller speed reduction motor is coaxially connected with the end part of one end of the conveying roller, the middle part of the conveying roller is provided with a concave arc ring surface used for positioning and installing bars, and the bars are supported on the surface of the concave arc.

The feeding pinch roll mechanism comprises a first oil cylinder, a second oil cylinder, an upper pinch roll and a lower pinch roll, the first oil cylinder and the second oil cylinder are arranged on the rack in parallel, two ends of the upper pinch roll are supported and mounted between the upper portions of the first oil cylinder and the second oil cylinder, two ends of the lower pinch roll are supported and mounted between the lower portions of the first oil cylinder and the second oil cylinder, pinch roll speed reduction motors are arranged beside the upper pinch roll and the lower pinch roll, an output shaft of each pinch roll speed reduction motor is coaxially connected with one end portion of each of the upper pinch roll and the lower pinch roll, concave arc ring surfaces used for positioning and mounting of bars are arranged in the middle of the upper pinch roll and the lower pinch roll, and the bars are supported between the concave arc ring surfaces of the upper pinch roll and.

The center frame positioning mechanism comprises a third oil cylinder, a fourth oil cylinder, a V-shaped positioning block and a positioning press roller, the third oil cylinder and the fourth oil cylinder are installed on the rack in parallel, two ends of the positioning press roller are supported and installed between the third oil cylinder and the fourth oil cylinder, the V-shaped positioning block is located at the position below the positioning press roller, the top surface of the V-shaped positioning block is provided with a V-shaped groove, two side inclined planes of the V-shaped groove are provided with friction rollers, the middle part of the positioning press roller is provided with a concave arc ring surface used for positioning and installing a bar, and the bar is supported between the concave arc ring surface of the positioning press roller and the.

The peeling mechanism comprises an upper peeling mechanism, a lower peeling mechanism and a transmission mechanism, and the transmission mechanism is respectively in transmission connection with the upper peeling mechanism and the lower peeling mechanism.

The transmission mechanism comprises a transmission motor, a belt, a reduction gear set, a large bevel gear, an upper bevel gear, a lower bevel gear, an upper sliding bevel gear, a lower sliding bevel gear, an upper upright post and a lower upright post, wherein the transmission motor is installed on the rack; be equipped with vertical slide rail in the frame, go up peeling mechanism and peel mechanism down and all be equipped with the spout, spout and slide rail inlay dress cooperation for go up peeling mechanism and peel mechanism movable mounting down and reciprocate on the slide rail and along the slide rail.

The upper peeling mechanism and the lower peeling mechanism have the same structure and respectively comprise a box body, a peeling device input shaft, a peeling device intermediate shaft, a peeling device output shaft and a milling cutter, wherein the peeling device input shaft, the peeling device intermediate shaft and the peeling device output shaft are arranged in the box body, one end of the peeling device input shaft is positioned outside the box body and coaxially sleeved with a third bevel gear, the third bevel gear is meshed with an upper sliding bevel gear/a lower sliding bevel gear, the other end of the peeling device input shaft extends into the box body and coaxially sleeved with a first bevel gear, the peeling device intermediate shaft and the peeling device output shaft are positioned in the box body, one end of the peeling device intermediate shaft is coaxially sleeved with a second bevel gear, the second bevel gear is meshed with the first bevel gear, the other end of the peeling device intermediate shaft is coaxially sleeved with a first flat gear, one end of, the other end of the output shaft of the peeling device extends out of the box body and is fixedly sleeved with a milling cutter; the bar is positioned between the milling cutters of the upper peeling mechanism and the lower peeling mechanism, the transmission motor is operated to drive the large conical gear to rotate through belt transmission and the reduction gear set, the large conical gear drives the upper conical gear and the lower conical gear to rotate around the same shaft along opposite rotation directions, and then the output shaft of the peeling device in the peeling mechanism with the same structure and the milling cutters on the peeling device are driven to rotate around different rotation directions, so that the bar is driven to be peeled and processed between the two milling cutters.

One side of the box body is provided with a triangular sliding groove, and the triangular sliding groove and the sliding rail are installed in a matched mode.

The milling cutter is a plurality of sawtooth surface structures which are uniformly distributed at intervals along the circumference.

The upper end of the upper upright post is provided with a flywheel.

Still include ejection of compact pinch roll mechanism, ejection of compact conveying roller mechanism sets up peeling mechanism's exit side position, and is the same with feeding transfer roller mechanism structure.

The utility model has the advantages that:

1) the automatic production line that the device provided reduces the efficiency of artifical or traditional cutting in the past and the waste of manpower and materials, simultaneously the utility model discloses a product can reach 6 ms's economic speed, has improved efficiency greatly, has reduced man-hour, the reduce cost.

2) The device adopts the synthesis of multi-direction structure technique, through the processing mode of milling and drawing combination, not only machining efficiency is high, can also ensure the precision.

3) The device can reduce the influence of the bar crust on more accurate processing in the follow-up bar processing, and improves the practicality after the bar processing.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic structural view of the feeding transfer roller mechanism of the present invention;

FIG. 3 is a schematic structural view of a feeding pinch roll mechanism of the present invention;

FIG. 4 is a schematic structural view of the center frame positioning mechanism of the present invention;

FIG. 5 is a schematic view of the installation structure of the peeling mechanism of the present invention;

fig. 6 is a schematic structural view of the transmission mechanism of the present invention;

FIG. 7 is a top view of the peeling mechanism of the present invention;

fig. 8 is the schematic view of the triangular sliding groove and the sliding rail of the present invention.

Fig. 9 is a perspective view of the milling cutter structure of the present invention.

Detailed Description

The invention is further described with reference to the accompanying drawings.

As shown in fig. 1, the device comprises a machine tool 10, and a feeding transfer roller mechanism 1 and a feeding pinch roller mechanism 2 which are arranged on the machine tool 10 in sequence along the conveying direction of the bar, centre frame positioning mechanism 3 and

peeling mechanism

4, 10 lathe bed one end of lathe is equipped with feeding transfer roller mechanism 1, convey the long rod material of upper reaches to feeding transfer roller mechanism 1, feeding transfer roller mechanism 1 one side is equipped with feeding pinch roll mechanism 2, feeding pinch roll mechanism 2 gives an axial force and axial velocity of bar, feeding pinch roll mechanism 2 one side is equipped with centre frame positioning mechanism 3, centre frame positioning mechanism 3 is used for bar center location, 3 one side of centre frame positioning mechanism is equipped with peeling mechanism 4, the bar passes through feeding transfer roll mechanism 1 feeding, continue to impel forward by feeding pinch roll mechanism 2, fix a position by centre frame positioning mechanism 3 again, carry out the processing of skinning by peeling mechanism 4 at last. The peeling mechanism 4 realizes the peeling process by adopting a milling and pulling combined mode, and the feeding conveying roller mechanism 1, the feeding pinch roller mechanism 2, the center frame positioning mechanism 3 and the peeling mechanism 4 are positioned on the same central line on a machine tool, so that the bars can be smoothly conveyed and processed.

The feeding conveying roller mechanism 1, the feeding pinch roller mechanism 2, the center frame positioning mechanism 3 and the peeling mechanism 4 are all arranged on a frame 8 of the machine tool 10.

As shown in fig. 2, the feeding conveying roller mechanism 1 includes a first bearing seat 101, a second bearing seat 102, a conveying roller 103 and a conveying roller speed reduction motor, the first bearing seat 101 and the second bearing seat 102 are installed on the frame 8 side by side, two ends of the conveying roller 103 are supported between the first bearing seat 101 and the second bearing seat 102, the conveying roller speed reduction motor is arranged beside the conveying roller 103, an output shaft of the conveying roller speed reduction motor is coaxially connected with one end of the conveying roller 103, the middle of the conveying roller 103 is provided with a concave arc ring surface for positioning and installing a bar, the radian of the concave arc ring surface is matched with the curvature of the bar, the bar is supported on the concave arc ring surface of the conveying roller 103, it can be ensured that the metal bar cannot shift left and right in the conveying process, the centering effect is realized, the conveying roller speed reduction motor drives.

As shown in FIG. 3, the feeding pinch roll mechanism 2 comprises a first oil cylinder 201, a second oil cylinder 203, an upper pinch roll 202 and a lower pinch roll 204, the first oil cylinder 201 and the second oil cylinder 203 are installed on the frame 8 in parallel, two ends of the upper pinch roll 202 are supported and installed between the upper portions of the first oil cylinder 201 and the second oil cylinder 203, two ends of the lower pinch roll 204 are supported and installed between the lower portions of the first oil cylinder 201 and the second oil cylinder 203, pinch roll speed reducing motors 9 are arranged beside the upper pinch roll 202 and the lower pinch roll 204, an output shaft of the pinch roll speed reducing motors 9 is coaxially connected with one end portion of the upper pinch roll 202/the lower pinch roll 204, concave arc ring surfaces for positioning and installing bars are arranged in the middle portions of the upper pinch roll 202 and the lower pinch roll 204, the radian of the concave arc ring surfaces is matched with the curvature of the bars, and the bars are supported between the concave arc ring surfaces of.

The first oil cylinder 201 and the second oil cylinder 203 are used for driving the upper pinch roll 202 and the lower pinch roll 204 to move up and down, the upper pinch roll 202 can move up and down through the first oil cylinder 201 and the second oil cylinder 203, the position is adjusted, and the workpiece is convenient to disassemble and assemble.

As shown in fig. 4, the center frame positioning mechanism 3 includes a third oil cylinder 301, a fourth oil cylinder 302, a V-shaped positioning block 304 and a positioning press roller 305, the third oil cylinder 301 and the fourth oil cylinder 302 are installed on the frame 8 in parallel, two ends of the positioning press roller 305 are supported and installed between the third oil cylinder 301 and the fourth oil cylinder 302, the V-shaped positioning block 304 is located at a position below the positioning press roller 305 and fixed on the frame 8, a V-shaped groove is formed in the top surface of the V-shaped positioning block 304, friction rollers 303 are arranged on inclined surfaces on two sides of the V-shaped groove and used for increasing friction force when a bar passes through the V-shaped groove, so as to increase stability of transporting and positioning the bar, a concave arc ring surface for positioning and installing the bar is arranged in the middle of the positioning press roller 305, the radian of the concave arc ring surface is matched with the curvature of the bar, and the bar is supported. The third oil cylinder 301 and the fourth oil cylinder 302 drive the positioning clamping roller 305 to move up and down, so that the position of a workpiece is conveniently positioned, and partial pretightening force can be provided.

A center frame positioning mechanism 3 is added between the peeling mechanism 4 and the feeding pinch roll mechanism 2 for auxiliary positioning, the center lines are mainly required to be consistent, the processing precision can be improved, and the abrasion of an oxide layer hard layer to a cutter in subsequent processing is reduced.

As shown in fig. 5, the peeling mechanism 4 includes an upper peeling mechanism 402, a lower peeling mechanism 401 and a transmission mechanism 6, and the transmission mechanism 6 is simultaneously and respectively in transmission connection with the upper peeling mechanism 402 and the lower peeling mechanism 401;

as shown in fig. 6, the transmission mechanism 6 includes a transmission motor 601, a belt 602, a reduction gear set 603, a large bevel gear 608, upper and

lower bevel gears

607, 610, upper and lower

sliding bevel gears

606, 611, and upper and

lower uprights

604, 609, the transmission motor 601 is mounted on the frame 8, an output shaft of the transmission motor 601 is belt-driven connected with a power input shaft of the reduction gear set 603 via the belt 602, the reduction gear set 603 is mounted in the frame 8, the power output shaft of the reduction gear set 603 is coaxially connected with a large bevel gear 608, the upper side and the lower side of the large bevel gear 608 are respectively meshed with an upper bevel gear 607 and a lower bevel gear 610, the upper bevel gear 607 and the lower bevel gear 610 are respectively coaxially and fixedly sleeved on an upper upright post 604 and a lower upright post 609, the upper upright post 604 and the lower upright post 609 are coaxially arranged but not connected, the upper end of the upper upright post 604 is provided with a flywheel 605, and the flywheel 605 is used for improving the stability of the upper upright post 604 in the transmission process. The middle parts of the upper upright column 604 and the lower upright column 609 are respectively coaxially and fixedly sleeved with an upper sliding bevel gear 606 and a lower sliding bevel gear 611, and the upper sliding bevel gear 606 and the lower sliding bevel gear 611 are respectively meshed with the bevel teeth of the upper peeling mechanism 402 and the lower peeling mechanism 401 to drive the upper peeling mechanism 402 and the lower peeling mechanism 401 to work; the rack 8 is provided with a vertical slide rail 403, the upper peeling mechanism 402 and the lower peeling mechanism 401 are both provided with slide grooves 406, and the slide grooves 406 and the slide rails 403 are embedded and matched, so that the upper peeling mechanism 402 and the lower peeling mechanism 401 are movably mounted on the slide rails 403 and move up and down along the slide rails 403, and the upper peeling mechanism 402 and the lower peeling mechanism 401 can be adjusted in position up and down through the matching of the slide rails 403 and the slide grooves 406.

As shown in fig. 7, the upper peeling mechanism 402 and the lower peeling mechanism 401 have the same structure and are arranged vertically symmetrically, and each includes a box body, a peeling device input shaft 408, a peeling device intermediate shaft 414, a peeling device output shaft 413 and a milling cutter 412 installed outside the box body, the box body is installed on the rack 8, one end of the peeling device input shaft 408 is located outside the box body and coaxially sleeved with a third bevel gear 410, the third bevel gear 410 is in bevel gear engagement with the upper sliding bevel gear 606/the lower sliding bevel gear 611, the other end of the peeling device input shaft 408 extends into the box body and coaxially sleeved with a first bevel gear 409, the peeling device intermediate shaft 414 and the peeling device output shaft 413 are located in the box body, and in a specific implementation, the peeling device intermediate shaft 414 and the peeling device output shaft 413 are both installed in the box body through. One end of a middle shaft 414 of the peeling device is coaxially sleeved with a second bevel gear 411, the second bevel gear 411 is in bevel gear engagement with a first bevel gear 409, the other end of the middle shaft 414 of the peeling device is coaxially sleeved with a first flat gear 405, one end of an output shaft 413 of the peeling device is coaxially sleeved with a second flat gear 404, the second flat gear 404 is in straight gear engagement with the first flat gear 405, and the other end of the output shaft 413 of the peeling device extends out of the box body and is fixedly sleeved with a milling cutter 412; the sliding bevel gear drives the input shaft 408 of the peeling device to rotate through the third bevel gear 410, drives the intermediate shaft 414 of the peeling device to rotate through the bevel gear pair, and drives the output shaft 413 of the peeling device to rotate through the spur gear pair, so that the coaxial milling cutter 412 rotates and processes. The milling cutter 412 is a plurality of saw tooth surface structures spaced circumferentially.

The bar stock is positioned between the upper peeling mechanism 402 and the milling cutter 412 of the lower peeling mechanism 401, the transmission motor 601 operates through belt transmission and the reduction gear set 603 to drive the large bevel gear 608 to rotate, the large bevel gear 608 drives the upper bevel gear 607 and the lower bevel gear 610 to rotate around the same shaft and along opposite rotation directions, and then the peeling device output shaft 413 and the milling cutter 412 on the peeling mechanism with the same structure are driven to rotate around different rotation directions, and further the bar stock is peeled and processed between the two milling cutters 412. Through the structure, the milling cutters 412 on the upper side and the lower side of one motor are driven to rotate in opposite directions at the same time, so that the bar is peeled, the cost is reduced, and the processing efficiency is improved.

As shown in fig. 9, the peeling mechanism 4 adopts a milling and drawing combined mode, the cutters are formed into milling cutters 5, and the milling cutters are respectively provided with an upper part and a lower part, and are respectively responsible for peeling the upper and lower 1/4 circular arcs, so as to realize peeling work on the upper and lower surfaces of the metal bar.

One side of the box body is provided with a triangular sliding groove 406, the triangular sliding groove 406 is a strip-shaped V-shaped groove in the vertical direction, the triangular sliding groove 406 and the sliding rail 403 are installed in a matched mode, and the upper peeling device 402 or the lower peeling device 401 can be adjusted in the vertical position on the sliding rail 403 through the sliding groove 406, so that the cutter can be adjusted in the vertical movement mode.

Therefore, the transmission mechanism 6 adopts belt transmission and gear transmission, the transmission efficiency is high, the transmission is stable, and through the distribution of transmission ratio, the system adopts bevel gear transmission to change the transmission direction to the upper cutter and the lower cutter respectively, so that the compactness of the whole structure of the machine tool is ensured, and the force required during cutting is met.

The concrete implementation also comprises a discharging pinch roll mechanism 5, wherein the discharging delivery roll mechanism 5 is arranged at the position of the outlet side of the peeling mechanism 4 and has the same structure as the feeding delivery roll mechanism 2.

The utility model discloses an implement working process is skinned:

1) the bar stock is fed from the feeding conveying roller mechanism 1, passes through the feeding pinch roller mechanism 2, and is pushed to the center frame positioning mechanism 3 by the feeding pinch roller mechanism 2 with an axial force and an axial speed;

2): after being positioned by the center frame positioning mechanism 3, the bar stock is conveyed to the peeling mechanism 4;

3): peeling the bar stock by the milling cutter 412 of the peeling mechanism 4;

4): after the processed bar passes through the discharging pinch roll mechanism 5, the discharging pinch roll mechanism 5 again transfers the bar with an axial force and an axial speed, so that the bar is transported to the feeding transport roll mechanism 7 of the next step.

In specific implementation, after the first long bar completely passes through the feeding pinch roll mechanism 1, the next bar can enter the feeding pinch roll mechanism 1.

It is thus clear with this implementation, the utility model discloses carry out systematic improvement to processing circular metal bar preprocessing part, the efficiency of manual buffing improves greatly before making, and can add full-automatic production line, has reduced workman's intensity of labour, has improved the production precision, practices thrift the production time, accords with the last general feed speed of automation line, can raise the efficiency, and feeding pinch roll mechanism adopts hydraulic pressure mechanism, can provide fine speed and power.

Simultaneously the utility model discloses all adopt integral type gear motor among feeding pinch roll mechanism, ejection of compact pinch roll mechanism and the feeding transfer roller mechanism, reduce lathe overall structure's area, make the lathe lightweight, and feeding pinch roll mechanism, ejection of compact pinch roll mechanism and central locating rack mechanism adopt vertical hydro-cylinder to provide the packing force, transmit the corresponding pinch roll again on will doing all can the power transmission to double-row roller bearing through the device.

Claims

1. The utility model provides an automatic device of skinning of bar which characterized in that: comprises a machine tool (10), and a feeding conveying roller mechanism (1), a feeding pinch roller mechanism (2), a center frame positioning mechanism (3) and a peeling mechanism (4) which are sequentially arranged and installed on the machine tool (10) along the bar conveying direction;

the feeding conveying roller mechanism (1), the feeding pinch roller mechanism (2), the center frame positioning mechanism (3) and the peeling mechanism (4) are all arranged on a machine frame (8) of the machine tool (10);

the feeding conveying roller mechanism (1) comprises a first bearing seat (101), a second bearing seat (102), a conveying roller (103) and a conveying roller speed reducing motor, wherein the first bearing seat (101) and the second bearing seat (102) are installed on the rack (8) in parallel, two ends of the conveying roller (103) are supported between the first bearing seat (101) and the second bearing seat (102), the conveying roller speed reducing motor is arranged beside the conveying roller (103), an output shaft of the conveying roller speed reducing motor is coaxially connected with one end of the conveying roller (103), a concave arc ring surface for positioning and installing a bar is arranged in the middle of the conveying roller (103), and the bar is supported on the concave arc ring surface of the conveying roller (103);

the feeding pinch roll mechanism (2) comprises a first oil cylinder (201) and a second oil cylinder (203), the device comprises an upper pinch roll (202) and a lower pinch roll (204), a first oil cylinder (201) and a second oil cylinder (203) are installed on a rack (8) in parallel, two ends of the upper pinch roll (202) are installed between the upper portions of the first oil cylinder (201) and the second oil cylinder (203) in a supporting mode, two ends of the lower pinch roll (204) are installed between the lower portions of the first oil cylinder (201) and the second oil cylinder (203) in a supporting mode, pinch roll speed reducing motors (9) are arranged beside the upper pinch roll (202) and the lower pinch roll (204), an output shaft of each pinch roll speed reducing motor (9) is coaxially connected with one end portion of each of the upper pinch roll (202) and the lower pinch roll (204), concave arc ring surfaces used for positioning and installing bars are arranged in the middle portions of the upper pinch roll (202) and the lower pinch roll (204), and the bars are supported between the concave arc ring surfaces of the upper pinch roll (202.

2. The automatic peeling device for the bar stock according to claim 1, characterized in that:

center frame positioning mechanism (3) include third hydro-cylinder (301), fourth hydro-cylinder (302), V type locating piece (304) and location compression roller (305), third hydro-cylinder (301) and fourth hydro-cylinder (302) are installed in parallel on frame (8), location compression roller (305) both ends support installation between third hydro-cylinder (301) and fourth hydro-cylinder (302), V type locating piece (304) are located position department under location compression roller (305), and V-arrangement groove is seted up to V type locating piece (304) top surface, the both sides inclined plane of V-arrangement groove is equipped with friction roll (303), location compression roller (305) middle part is equipped with the concave arc surface that is used for bar location installation, the bar bearing is between the V-arrangement groove of the concave arc surface of location compression roller (305) and V type locating piece (304).

3. The automatic peeling device for the bar stock according to claim 1, characterized in that:

the peeling mechanism (4) comprises an upper peeling mechanism (402), a lower peeling mechanism (401) and a transmission mechanism (6), and the transmission mechanism (6) is in transmission connection with the upper peeling mechanism (402) and the lower peeling mechanism (401) simultaneously;

the transmission mechanism (6) comprises a transmission motor (601), a belt (602), a reduction gear set (603), a large bevel gear (608), upper and lower bevel gears (607, 610), upper and lower sliding bevel gears (606, 611) and upper and lower upright posts (604, 609), the transmission motor (601) is arranged on the frame (8), an output shaft of the transmission motor (601) is in belt transmission connection with a power input shaft of the reduction gear set (603) through the belt (602), a power output shaft of the reduction gear set (603) is in coaxial connection with the large bevel gear (608), the upper and lower sides of the large bevel gear (608) are respectively in meshing connection with the upper bevel gear (607) and the lower bevel gear (610), the upper bevel gear (607) and the lower bevel gear (610) are respectively and coaxially and fixedly sleeved on the upper upright post (604) and the lower upright post (609), the upper upright post (604) and the lower upright post (609) are coaxially arranged but not connected, the upper upright post (604) and the lower upright post (609) are respectively coaxially and fixedly sleeved with an upper sliding bevel gear (606) and a lower sliding bevel gear (611), and the upper sliding bevel gear (606) and the lower sliding bevel gear (611) are respectively meshed with the bevel teeth of the upper peeling mechanism (402) and the lower peeling mechanism (401); a vertical sliding rail (403) is arranged on the rack (8), the upper peeling mechanism (402) and the lower peeling mechanism (401) are both provided with sliding chutes (406), and the sliding chutes (406) are embedded and matched with the sliding rail (403), so that the upper peeling mechanism (402) and the lower peeling mechanism (401) are movably mounted on the sliding rail (403) and move up and down along the sliding rail (403);

the upper peeling mechanism (402) and the lower peeling mechanism (401) are of the same structure and respectively comprise a box body, a peeling device input shaft (408) arranged in the box body, a peeling device intermediate shaft (414), a peeling device output shaft (413) and a milling cutter (412) arranged outside the box body, one end of the peeling device input shaft (408) is positioned outside the box body and coaxially sleeved with a third bevel gear (410), the third bevel gear (410) is in meshing connection with the bevel teeth of an upper sliding bevel gear (606)/a lower sliding bevel gear (611), the other end of the peeling device input shaft (408) extends into the box body and coaxially sleeved with a first bevel gear (409), the peeling device intermediate shaft (414) and the peeling device output shaft (413) are positioned in the box body, one end of the peeling device intermediate shaft (414) is coaxially sleeved with a second bevel gear (411), the second bevel gear (411) is in meshing connection with the bevel, a first flat gear (405) is coaxially sleeved at the other end of the intermediate shaft (414) of the peeling device, a second flat gear (404) is coaxially sleeved at one end of an output shaft (413) of the peeling device, the second flat gear (404) is in straight tooth meshing connection with the first flat gear (405), and a milling cutter (412) is fixedly sleeved after the other end of the output shaft (413) of the peeling device extends out of the box body;

the bar stock is positioned between the upper peeling mechanism (402) and the milling cutter (412) of the lower peeling mechanism (401), the transmission motor (601) operates through belt transmission and the reduction gear set (603) to drive the large bevel gear (608) to rotate, the large bevel gear (608) drives the upper bevel gear (607) and the lower bevel gear (610) to rotate around the same shaft along opposite rotation directions, and then the peeling device output shaft (413) in the peeling mechanism with the same structure and the milling cutter (412) on the peeling mechanism are driven to rotate around different rotation directions, and further the bar stock is driven to be peeled and processed between the two milling cutters (412).

4. An automatic peeling device for bars according to claim 3, characterized in that:

one side of the box body is provided with a triangular sliding groove (406), and the triangular sliding groove (406) is matched with the sliding rail (403) for installation.

5. An automatic peeling device for bars according to claim 3, characterized in that:

the milling cutter (412) is a plurality of sawtooth surface structures which are uniformly distributed at intervals along the circumference.

6. An automatic peeling device for bars according to claim 3, characterized in that:

the upper end of the upper upright post (604) is provided with a flywheel (605).

7. The automatic peeling device for the bar stock according to claim 1, characterized in that:

the peeling machine is characterized by further comprising a discharging pinch roll mechanism (5), wherein the discharging pinch roll mechanism (5) is arranged at the position of the outlet side of the peeling mechanism (4) and is identical to the feeding pinch roll mechanism (2) in structure.