CN210876754U - Low-pair multi-rod mechanism rounding machine - Google Patents

Abstract

The utility model provides a low-pair multi-rod mechanism rounding machine, which comprises a power mechanism, an eccentric mechanism, a rocker arm mechanism, a transverse moving mechanism and a swing angle mechanism, wherein the power mechanism is used for providing power; the eccentric mechanism is arranged at the downstream of the power mechanism and is used for converting the power of the power mechanism into rotary motion and then transmitting the rotary motion to the rocker arm mechanism; the rocker mechanism is arranged at the downstream of the eccentric mechanism and swings under the action of the eccentric mechanism and drives the transverse moving mechanism to move; the transverse moving mechanism is arranged at the downstream of the rocker arm mechanism and can drive the swing angle mechanism to move while moving; the swing angle mechanism is also connected with an upper roller and a lower roller of the rolling mill and is used for driving the upper roller and the lower roller to do synchronous reverse circular rotation swing. The device can be matched and connected with rollers of different rolling mills through the shaft sleeve to drive the rollers to do reciprocating circular pressing motion, has the remarkable characteristics of small volume, light weight, compact layout structure, large transmission power and high adjustment precision, and is particularly suitable for small-specification bar products.

Description

Low-pair multi-rod mechanism rounding machine

Technical Field

The utility model relates to a steel rolling technical field, in particular to low vice multi-rod mechanism rounding machine.

Background

The hot-rolled ribbed steel bar for anchor rod belongs to a large class of bar series products, is widely applied to geotechnical support engineering of coal mines and other mine roadways and tunnels, wherein the crescent rib steel bar with the crescent transverse rib longitudinal section is more commonly applied, the market demand around Shandong is about 40 million tons/year, and the market prospect is wide.

In the use process of 'crescent rib anchor rod reinforcing steel bar', a coal mine user usually carries out fixed-length shearing treatment on an outsourcing 'multiple length anchor rod steel finished product' according to the actual requirements on site, the finished product is sheared into a semi-finished product with the length of 1800mm-2200mm, then the whole cold-pressing rounding treatment is carried out on the outer surface of the partial range of about 300mm from the end surface of the head of the 'fixed-length material', so as to eliminate the 'crescent transverse rib' protruding on the surface of a rolled material, refine surface layer metallographic structure particles, obtain the circumferential outer surface of which the partial ellipticity is in the standard tolerance range, and finally turn and machine a metric external thread with the nominal diameter M20 of about 200 mm.

When the roadway is constructed on site, the tail end of anchor rod steel with external threads is inserted into a blind hole drilled in advance on an ore body rock-soil layer by about 400mm, then a special resin adhesive is filled for fixation, a tray with through holes is inserted into the anchor rod steel, the lower tray surface of the tray is contacted with the surface of the ore body rock-soil layer, finally the external threads of the head M20 of the anchor rod steel are matched with a standard 8-level high-strength nut in a rotating mode for use, the tray is firmly fixed on the roadway ore body through the axial pre-tightening force of a thread pair, and the anchoring supporting effect on the upper portion of the roadway and the peripheral rock-soil layer is achieved.

Considering the 'bond strength' and 'compatibility' of the anchor rod steel and the resin adhesive in a rock stratum, in the normal rolling process of a rod line, a design scheme of a hole pattern with the height of a crescent rib being not equal to that of a common phi 20 left-handed anchor rod steel is adopted, the heights of transverse ribs are gradually decreased in the circumferential direction, the tooth heights of spiral lines of longitudinal sections are different, and the bending resistance and the shearing strength of tooth shapes are seriously influenced, so that the anchor rod steel cannot be directly matched with an integrally cast nut for use, and a metric thread tooth shape must be turned on the end of the anchor rod steel and an 8.8-level high-strength nut must be screwed to provide pre-tightening force. In the process of turning the thread profile, in order to enable the nominal diameter of the thread to meet the national standard tolerance range and avoid serious out-of-tolerance of ovality, the circumferential whole body of the thread turning part must be subjected to rounding treatment firstly to eliminate the raised transverse ribs on the surface layer of the thread turning part and avoid the tipping of a turning tool and the disconnection of a spiral line, so that the plumpness of the thread crest diameter profile of the external thread is not uniform, the nominal diameter size is seriously out-of-tolerance, and the problems of the screwing precision and the bearing capacity of a spiral pair are reduced.

In the prior art, an eccentric hole type groove is generally directly arranged on a roller of a rolling mill, and due to the fact that the eccentric rolling inertia moment of the roller is large, local unbalance loading burning loss of a bearing of the rolling mill is easily caused, and the eccentric hole type machine is difficult to machine and manufacture, the turning precision of the roller groove is difficult to ensure, the controllable size precision of the appearance of a rolled material is poor, and the cost is too high. In the prior art, mechanisms for controlling rolling and rolling circles by adopting external equipment are adopted, but the mechanisms have the defects of high cost, large occupied area, complex control, incapability of adjusting the motion amplitude of the roller according to actual conditions and inaccurate adjustment.

Based on this, the utility model provides a low vice bull stick mechanism rounding machine can be connected with the roll cooperation of different rolling mills through the axle sleeve, drives the roll and is reciprocal pressure circular motion, high-efficient, convenient realization above-mentioned purpose.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a low vice bull mechanism rounding machine can be used to radially press the circle to the terminal surface of hot rolling ribbed steel bar etc. for the stock and handle, is used for eliminating the bellied crescent cross rib in rolling material top layer, adjusts its local circumference ovality tolerance to the inside metallographic structure granule of calendering refines top layer tissue fibre, satisfies the ovality and the smooth finish process demand of follow-up lathe work metric system external screw thread tooth type.

The utility model discloses a realize through following technical scheme:

the improvement of the low-pair multi-rod mechanism rounding machine is that the rounding machine comprises a power mechanism, an eccentric mechanism, a rocker mechanism, a transverse moving mechanism and a swing angle mechanism, wherein,

the power mechanism is used for providing power;

the eccentric mechanism is arranged at the downstream of the power mechanism and is used for converting the power of the power mechanism into rotary motion and then transmitting the rotary motion to the rocker arm mechanism;

the rocker arm mechanism is arranged at the downstream of the eccentric mechanism and swings under the action of the eccentric mechanism and drives the transverse moving mechanism to move;

the transverse moving mechanism is arranged at the downstream of the rocker arm mechanism, and the transverse moving mechanism can drive the swing angle mechanism to move while moving;

the swing angle mechanism is also connected with an upper roller and a lower roller of the rolling mill and is used for driving the upper roller and the lower roller to do synchronous reverse circular rotary swing.

Further, in the above-mentioned rounding machine with a low pair of multi-rod mechanism, the eccentric mechanism includes a shaft, a transmission member, an eccentric disc and an eccentric slider, and the shaft is disposed on the bearing seat; the transmission part is sleeved on the shaft, the eccentric disc is connected with the transmission part to rotate under the driving of the transmission part, the eccentric disc is located on the outer side of one end of the shaft, the eccentric sliding block is detachably arranged along the radial direction of the eccentric disc and can do circular motion along with the eccentric disc, and the eccentric sliding block is connected with the rocker arm mechanism which rotates around an axis parallel to the axis of the eccentric disc.

Further, in the above-mentioned rounding machine with a low pair of multi-rod mechanism, the eccentric disc is split type and is formed by two identical semicircular plates in mirror image butt joint, and an eccentric slide way is formed at the butt joint position, and the eccentric slide block is slidably arranged in the eccentric slide way.

Further, in foretell low vice multi-rod mechanism rounding machine, eccentric mechanism still includes eccentric guiding mechanism, eccentric guiding mechanism includes the eccentric adjusting screw, the eccentric adjusting screw rotationally locates in the eccentric slide, be equipped with on the eccentric adjusting screw with eccentric slider assorted screw thread, be equipped with threaded through-hole on the eccentric slider, the eccentric adjusting screw pass the through-hole with eccentric slider threaded connection.

Further, in foretell low vice multi-bar mechanism rounder, rocker mechanism includes rocking arm and rocker arm slider, be equipped with the rocking arm slide in the rocking arm, rocker arm slider slidable locate in the rocking arm slide and with the sideslip mechanism is articulated, the one end of rocking arm pass through the connecting rod with eccentric mechanism is connected, the other end swing ground of rocking arm sets up on the base.

Further, in the above-mentioned low pair of multi-rod mechanism rounding machine, the rocker arm mechanism further includes a rocker arm adjusting mechanism, the rocker arm adjusting mechanism includes a rocker arm adjusting screw and a rocker arm nut, the rocker arm adjusting screw is located in the rocker arm slideway, the rocker arm nut is located on the rocker arm adjusting screw and can follow the rocker arm adjusting screw to axially rotate.

Further, in the above-mentioned low-pair multi-bar mechanism rounding machine, the traverse mechanism includes a traverse guide rail and a traverse slider, the traverse guide rail is arranged along the rolling center line direction of the upper and lower two rollers, and the traverse slider is slidably disposed in the traverse guide rail.

Further, in the low-pair multi-rod mechanism rounding machine, the transverse moving mechanism further comprises a transverse moving adjusting mechanism, the transverse moving adjusting mechanism comprises a pull rod adjusting screw, the pull rod adjusting screw is of a stud bolt structure, one end of the stud bolt is provided with a left-handed external thread, the other end of the stud bolt is provided with a right-handed external thread, and two ends of the stud bolt can be screwed with corresponding internal threads of sleeves of two pull rods;

the pull rod is used for connecting the rocker arm mechanism and the transverse moving mechanism.

Further, in the low-pair multi-rod mechanism rounding machine, the swing angle mechanism comprises a guide rod, an upper swing rod and a lower swing rod, the guide rod is slidably connected with the traversing mechanism, one end of each of the upper swing rod and the lower swing rod is respectively connected with two ends of the guide rod, and the other end of each of the upper swing rod and the lower swing rod is respectively connected with the roller through a bearing sleeve; and swing rod slideways are arranged on the central axes of the upper swing rod and the lower swing rod and are used for connecting two ends of the guide rod.

Further, in the low-pair multi-rod mechanism rounding machine, gaps are formed at the ends, connected with the guide rod, of the upper swing rod and the lower swing rod, and a group of baffle plates are attached to the end faces of the two sides of the upper swing rod and the end faces of the two sides of the lower swing rod and are connected with the upper swing rod and the lower swing rod into a whole.

The utility model discloses an useful part lies in: the utility model provides a pair of low vice bull stick mechanism rounder can be convenient for the accurate regulation and control of on-the-spot executive component limit pivot angle and rolling precision. The utility model discloses equal independent design assists guiding mechanism in eccentric mechanism, rocker arm mechanism and sideslip mechanism, eccentric guiding mechanism, rocker arm guiding mechanism and sideslip guiding mechanism promptly, through the vice circumference intermittent type rotation of the inside slip spiral of each mechanism, carry out the accurate control of eccentricity, rocking arm pivot angle and sideslip stroke to furthest's elimination parts machining and assembly error satisfy the actual demand of on-the-spot operating mode parameter.

When high-quality forging heat treatment alloy steel (such as H13 die steel) is adopted as the material of a key stress part, and the local design strength and the system rigidity of the mechanism are properly increased, the mechanism can also be used as a general cold rolling calender to perform cold rolling, extension and straightening treatment on partial medium and small-sized bar products.

The utility model provides a pair of low vice multi-rod mechanism rounding machine's overall motion design adopts the low vice multi-rod mechanism in plane that forms by revolute pair and the articulated combination of removal pair, has that structural layout is compact, radial area of contact is big, bearing pressure is low, the characteristics of showing of stand wear and tear.

The utility model provides a pair of low vice multi-rod mechanism rounding machine has: the device has the remarkable characteristics of small volume, light weight, compact layout structure, large transmission power and high adjustment precision, and is particularly suitable for small-batch, multi-batch and short-fixed-length end cold rolling straightening and circle pressing shaping of small-specification bar products.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. Wherein:

FIG. 1 is a schematic diagram of the movement of the low-pair multi-bar mechanism rounding machine provided by the present invention;

FIG. 2 is an exploded view of the low pair multi-bar mechanism rounding machine provided by the present invention;

FIG. 3 is an assembly front view of the low pair multi-bar mechanism rounding machine provided by the present invention;

FIG. 4 is an assembly plan view of the low pair multi-bar mechanism rounding machine provided by the present invention;

fig. 5 is an assembly view of the eccentric mechanism provided by the present invention;

fig. 6 is a schematic structural view of an eccentric disc provided by the present invention;

fig. 7 is an assembly view of the rocker arm mechanism provided by the present invention;

FIG. 8 is a view from the A-A direction of FIG. 6;

FIG. 9 is a view from the B-B direction of FIG. 6;

FIG. 10 is a view from the C-C direction of FIG. 6;

FIG. 11 is a cross sliding guide rail part diagram provided by the present invention;

FIG. 12 is an assembly view of the pull rod and the pull rod adjusting wire provided by the present invention;

fig. 13 is a drawing of a pull rod part provided by the present invention;

FIG. 14 is a drawing of a pull rod adjusting wire component according to the present invention;

fig. 15 is an assembly view of the pivot angle mechanism provided by the present invention;

fig. 16 is an assembly view of the low pair multi-bar mechanism rounding machine and the 350 rolling mill provided by the present invention;

fig. 17 is a view in the direction of M in fig. 15.

Description of reference numerals:

1-a power mechanism; 11-a motor; 111-motor pulley; 12-a speed reducer; 121-a reducer pulley; 122-reducer sprocket; a 13-V band;

2-an eccentric mechanism; 21-an eccentric disc; 22-eccentric slide block; 221-upper locknut; 222-a lower locknut; 23-sliding bearing seats; 231-a plain bearing; 24-a chain; 25-a transition disc; 26-eccentric adjusting wire; 261-eccentric adjusting wire copper sleeve; 27-axis; 28-a hinged sleeve; 29-a sprocket; 210-briquetting;

3-a rocker arm mechanism; 31-a rocker arm; 311-channel steel; 312-rocker bolt; 32-rocker arm slide block; 33-rocker arm adjusting wire; 34-rocker arm nut; 341-a handle; 35-rocker arm gland; 351-gland bearings; 36-rocker arm ear mount; 361-oil cup; 362-screws; 37-locknut;

4-a traversing mechanism; 41-a pull rod; 411-a pull rod pin; 42-traversing sliding block; 43-a traversing guide; 431-a transverse moving guide rail pin shaft; 432-copper sleeve of pin shaft of transverse guide rail; 44-a pull rod adjusting wire;

5-a swing angle mechanism; 51-a guide rod; 52-a swing rod; 521-an upper swing rod; 522-lower swing link; 53-rear axle sleeve;

6-connecting rod; 61-connecting rod copper sleeve; 62-connecting rod pin; 7-rolling; 8-350 rolling mill.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. Each example is provided by way of explanation of the invention and not limitation of the invention. In fact, it will be apparent to those skilled in the art that modifications and variations can be made in the present invention without departing from the scope or spirit of the invention. For instance, features illustrated or described as part of one embodiment, can be used with another embodiment to yield a still further embodiment. It is therefore intended that the present invention encompass such modifications and variations as fall within the scope of the appended claims and equivalents thereof.

In the description of the present invention, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description of the present invention and do not require that the present invention must be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. The terms "connected", "connected" and "disposed" used in the present invention should be understood in a broad sense, and may be, for example, either fixedly connected or detachably connected; they may be directly connected or indirectly connected through intermediate members, and specific meanings of the above terms will be understood by those skilled in the art as appropriate.

The utility model discloses a low vice bull mechanism rounding machine is exclusively used in the terminal surface radial pressure circle of "hot rolling ribbed steel bar for the stock and is handled for eliminate roll the bellied" crescent cross rib "in material top layer, adjust its local circumference ovality tolerance, and roll inside metallographic structure granule, refine top layer tissue fibre, satisfy ovality and the smooth finish process demand of follow-up lathe work metric system external screw thread tooth type.

As shown in fig. 1 to 17, the present invention provides a simplified motion diagram, an exploded structural view, an overall assembly diagram of the rounding machine, an assembly diagram of each mechanism, and a part diagram of the low-pair multi-rod mechanism rounding machine. The whole motion design of the rounding machine adopts a plane low-pair multi-rod mechanism formed by hinging and combining a revolute pair and a moving pair, and the rounding machine has the remarkable characteristics of compact structural layout, large radial contact area, low bearing pressure and wear resistance. As shown in fig. 1 and 2, the rounding machine includes the following five mechanisms: the mechanism comprises a power mechanism 1, an eccentric mechanism 2, a rocker mechanism 3, a transverse moving mechanism 4 and a swing angle mechanism 5. And the four mechanisms of the eccentric mechanism 1, the rocker arm mechanism 2, the transverse moving mechanism 3 and the swing angle mechanism 4 are combined together to form a plane low-pair multi-rod mechanism. The motion design of the device adopts a plane low-pair link mechanism consisting of a revolute pair and a revolute pair, and the device has the remarkable characteristics of large contact surface, low pressure, strong bearing capacity and wear resistance. The rounding machine is characterized in that 1I-level mechanism with the degree of freedom of 1 and 4 II-level rod sets with the degree of freedom of 0 are sequentially hinged and combined through two lower pairs in the form of a revolute pair and a moving pair to form a plane connecting rod II-level multi-rod mechanism with the degree of freedom of 1, only 1 prime mover and regular periodic motion.

The motion design idea is that the requirement of unique freedom degree of the system is met by superposing a plurality of 'II-level rod sets' with revolute pairs and moving pairs on the basis of 'I-level mechanisms'. The number of system moving members n is 9, the number of low pairs PL is 13 (including 10 revolute pairs and 3 revolute pairs, and 13 low pairs in total), and the total degree of freedom F is 3n-2 PL-3 x9-2x 13-1. Therefore, the total number of degrees of freedom of the system is consistent with the number of the original driving parts contained in the system, and the theoretical motion design requirement is met.

The power mechanism 1 of the rounding machine is connected by a prime motor (a motor 11) and a speed reducer 12 through a V belt 13 to form a power module unit of the rounding machine, namely the power mechanism 1. The power mechanism 1 is connected and matched with the eccentric mechanism 2 through a flexible chain transmission. The four major systems of the eccentric mechanism 2, the rocker arm mechanism 3, the transverse moving mechanism 4 and the swing angle mechanism 4 are sequentially arranged from left to right and sequentially hinged to form a typical plane low-pair multi-rod mechanism, and the rear shaft sleeve 53 in transition fit is used for driving the upper roller 7 and the lower roller 7 of the short-stress 350 rolling mill 8 to periodically, regularly, symmetrically and reversely swing (namely the rotating directions of the upper roller and the lower roller are periodically and repeatedly changed and rotated), so that the same-side steel biting/spitting sequential rolling action of the rolling mill is realized.

Through the power transmission and the motion form conversion of the multi-rod mechanism, the continuous circumferential rotary motion output by a motor (a motor 11) in a power mechanism 1 of the rounding machine is converted into plane mirror symmetry reverse reciprocating swing of an executing mechanism (a swing angle mechanism 5), and rolling torque is output outwards to apply work.

Specifically, as shown in fig. 3, for the utility model provides an assembly drawing of a low vice multi-rod mechanism rounder, be equipped with power unit 1 in this rounder's leftmost end, and for other mechanisms, power unit 1 locates the downside. The power mechanism 1 includes a motor 11 and a speed reducer 12. The motor 11 provides power for the rounding machine, the speed reducer 12 is connected with the motor 11 through a belt, a power mechanism of the system is formed by connecting a prime motor and the speed reducer through a V-belt 13 to form a power module unit of the system, and the torque transmitted by the motor 11 is transmitted to the eccentric mechanism 2 after being reduced and amplified through the speed reducer 12. The motor 11 is provided with a motor belt pulley 111, the speed reducer 12 is provided with a speed reducer belt pulley 121, and the V-belt 13 is tensioned between the two belt pulleys (the motor belt pulley 111 and the speed reducer belt pulley 121).

The input high-speed shaft of the speed reducer 12 is provided with a speed reducer belt wheel 121, transmission is established between the B-type V belt 13 and the motor 11, and the friction transmission structure belongs to a typical friction transmission structure in mechanical design and has the advantages of simple structure, stable transmission, good buffering and vibration absorption, high transmission reliability and large transmission power. In practical application, the B-type V belt 13 adopted on site can be a market standard general cloth-sandwiched rubber product, the flexibility is good, the tensile/bending strength is high, the load is uniformly distributed along the belt width, particularly, the special overload slip protection function is particularly important for a cold rolling process with larger output torque, when the system is overloaded due to overlarge roll gap adjustment reduction on site, the V belt 13 firstly sideslips to cut off the power transmission of the motor 11, and other components in the rounding machine are protected from being damaged. Simultaneously, when the rounding machine uses with the cold rolling mill cooperation, for the overload rolling moment who increases the cold rolling mill, the utility model discloses well motor 11 can adopt the adjustable tension structure of slide rail formula, arrange motor 11 on the steel construction bottom plate that has the slide rail (can unite two into one motor 11's bottom plate and speed reducer 12's bottom plate, design into a rigidity overall structure, constitute drive mechanism 1's modularization unit, the field layout and the adjustment of being convenient for), the horizontal displacement of motor 11 is adjusted in the rotation of accessible adjusting bolt when needs increase overload protection moment of torsion, increase the transmission centre-to-centre spacing a between motor band pulley 111 and the speed reducer band pulley 121, with the initial pulling force F who increases V area 13₀Further remarkably improving the maximum effective tension Fe of V belt 13 transmission_MaxAnd the overload transmission power Pmax, the adjustment process is simple, convenient, rapid and reliable, and the requirement of the field rolling torque can be met to the maximum extent. The maximum effective tension and the overload transmission power Pmax are calculated according to the following formula:

Fe_Max＝2F₀(e^fα-1)/(e^fα+1)；

Pmax＝Fe_MaxV/1000。

in the formula: v denotes the belt linear speed, f denotes the pulley surface friction coefficient of the belt drive, a is the small pulley wrap angle, and fa is a fixed value.

As shown in fig. 3, the eccentric mechanism 2 is disposed obliquely above the power mechanism 1, and is disposed on the ground through a bracket, and includes a shaft 27, a transmission member, an eccentric disc 21, and an eccentric slider 22.

The utility model discloses lie in with prior art's difference, directly pass the eccentric disc with the axle among the prior art, drive the eccentric disc by the rotation of axle again and rotate. The utility model discloses a driving medium is established to the cover on the one end lateral surface of axle, connects the eccentric disc in the one end of this driving medium, and the rotary power of eccentric disc comes from the driving medium this moment, and not the axle, that is to say that the utility model discloses an one end of axle is located to the eccentric disc adoption cantilever type mode, and not direct and axle contact, and the rotatory power source of eccentric disc also not directly provides by the axle. Specifically, the utility model discloses a driving medium cup joints on axle 27, and eccentric disc 21 is connected with the driving medium and rotates under the drive of driving medium, and eccentric disc 21 is located the one end outside of axle 27, and eccentric disc 21 adopts the cantilever mode to locate the one end of axle 27 promptly, and eccentric slider 22 slidable locates in eccentric disc 21, and eccentric slider 22 passes through connecting rod 6 and is articulated with rocker mechanism 3, and the other end and the rocker mechanism 3 of connecting rod 6 are connected. When the eccentric disc 21 rotates and the eccentric slide block 22 makes a circular motion, the connecting rod 6 connected with the eccentric slide block 22 drives the rocker arm mechanism 3 to move.

The transmission members include a hinge sleeve 28 directly sleeved on the shaft 27, a transition disc 25 sleeved on the outer side surface of the hinge sleeve 28, and a sprocket 29.

Further, the utility model provides a split type eccentric disc 21 can be formed by the concatenation of the same or different board of a plurality of shapes, and every two board butt joints department all is formed with eccentric slide. For example, the eccentric disc 21 may be formed by splicing two plates with the same or different shapes, or may be formed by splicing three or four plates with the same or different shapes, an eccentric slide is formed at the splicing position of each two plates, one or two eccentric slide blocks 22 may be arranged in each eccentric slide block, and each eccentric slide block 22 may be connected with an external mechanism. When an eccentric disc 21 drives many sets of external mechanism motion simultaneously, can realize avoiding the interference phenomenon that the mutual motion produced between each external mechanism through reasonable structural design, consequently the utility model discloses still have the characteristic that simple structure and work efficiency are high.

When the eccentric disc 21 is formed by splicing more than two plates, only one eccentric slide block 22 can be arranged in an eccentric slide way formed between the plates, and the plurality of eccentric slide ways are combined and designed to be arranged at different angles, so that the requirements of single/double or more external mechanisms needing eccentric motion in different types on site can be met. When the eccentric disc 21 is formed by splicing a plurality of plates, the rotation of the eccentric disc 21 may be a reciprocating rotation within a certain angle range, rather than a continuous rotation in one direction. When the eccentric disc 21 has only one eccentric slide way and only one eccentric slider 22 is provided in the eccentric slide way, the rotation direction and angle of the eccentric disc 21 may be continuous.

Furthermore, as shown in fig. 3 to fig. 6, in the present embodiment, the eccentric disc 21 is a split type, and is formed by two identical semi-circular plates which are arranged in a mirror image manner and are butted, an eccentric slide way is formed at the butt joint position of the two semi-circular plates, and the eccentric slide block 22 is arranged in the eccentric slide way and can reciprocate linearly along the eccentric slide way. The eccentric slide block 22 is also provided with a pin shaft in a rotating way, and is fixed by a locking nut and then eccentrically arranged in an eccentric slideway to form a group of sliding friction moving pairs, and the moving freedom degrees of the eccentric slide block 22 in the left and right 2 directions are limited to prevent the circumferential rotation of the eccentric slide block.

The upper end and the lower end of the eccentric disc 21 which is formed after the two same semi-circular plates are arranged in a mirror image mode and are butted are respectively provided with a pressing block 210, the pressing block 210 is symmetrically provided with two screw holes, the two screw holes respectively correspond to the two semi-circular plates, and the screw holes are internally used for penetrating through bolts (which can be hexagon socket head bolts) and are used for connecting and fixing the two semi-circular plates, so that the eccentric disc 21 is formed into an independent rigid integral disc-shaped component. Preferably, grooves for placing the pressing blocks 210 are formed at the upper and lower ends of the semicircular-like plate, so that the pressing blocks 210 fall into the grooves after being connected, thereby ensuring stable connection of the eccentric disc 21. And a copper sleeve 261 is designed in the pressing block 210, so that the sliding bearing 231 can be supported by antifriction when the eccentricity is manually adjusted. Considering the 'dead point' position of the multi-rod mechanism and the continuity of the rotary motion, the subsequent improved design can increase the flywheel component, the flywheel with large specific gravity is sleeved on the outer surface of the hinged sleeve 28 and is firmly connected by a double flat key arranged at 90 degrees, and the continuity of the large moment of inertia drives the connecting rod mechanism to pass through the designed 'dead point' position, so that the continuity and the smoothness of the motion are maintained.

A transition disc 25 concentric with the eccentric disc 21 is provided on one end surface (the end surface in the diameter direction, which is the end surface of the eccentric disc 21 facing the paper surface in fig. 3) of the eccentric disc 21, and the eccentric disc 21 is fixed to the transition disc 25 by a hexagon socket head cap screw. A sliding bearing seat 23 is provided on one side of the transition disc 25, the eccentric disc 21 is concentrically cantilevered on the outer end face of the transition disc 25, and a shaft 27 passes through the hinge sleeve 28 and is provided on the sliding bearing seat 23 through a sliding bearing 231. A hinge sleeve 28 is arranged at one end of the shaft 27 close to the transition disc 25, a chain wheel 29 is arranged on the outer circumferential surface of the hinge sleeve 28, the inner circumferential surface of the hinge sleeve 28 is in flat key fit with the shaft 27, and the eccentric disc 21 makes synchronous circumferential rotary motion along with the transition disc 25, the hinge sleeve 28, the chain wheel 29 and the shaft 27. In alternative embodiments, plain bearing 231 herein may be replaced with other types of bearings. In this embodiment, an eccentric slider 22 is provided in the eccentric runner. In other embodiments, two eccentric sliding blocks 22 may be disposed in the eccentric sliding way, and each eccentric sliding block 22 is connected to one external mechanism, so as to drive two external mechanisms to move simultaneously.

The output low-speed shaft of the speed reducer 12 in the power mechanism 1 is provided with a speed reducer chain wheel 122, and the speed reducer chain wheel 122 is connected with the downstream eccentric mechanism 2 by a chain 24. The above-mentioned sprocket 29 is connected to a reducer sprocket 122 via a chain 24. That is, the torque transmitted from the motor 11 is reduced and increased in distance by the speed reducer 12, and then transmitted to the sprocket 29 of the eccentric mechanism 2 by the speed reducer sprocket 122, and then the sprocket 29 rotates to drive the transition disc 25, the hinge sleeve 28, and the shaft 27 to rotate, thereby driving the eccentric disc 21 to rotate. The chain wheel 24 is flexibly connected with the eccentric mechanism 2 in a long distance by adopting a universal 28A bush roller chain, the transmission mode belongs to typical meshing transmission in mechanical design, and the chain wheel has the characteristics of simple integral structure, accurate and reliable average speed ratio and low requirement on relative installation precision. Meanwhile, due to the remarkable advantages of small axial tension and large transmission center distance, the transmission mechanism has strong adaptability to severe working conditions and long service life, can reliably transmit rotary motion between two parallel shafts in a long distance, is suitable for the structural design of the transmission mechanism and the actuating mechanism in long-distance split arrangement, has flexible and changeable spatial layout, can be selectively arranged and combined according to actual working conditions on site, and is efficient, reliable, convenient and quick.

The utility model discloses well rounding machine's eccentric mechanism 2 is split type combination suit structure to there is eccentric guiding mechanism alone to design, is used for the size of fine setting control eccentric mechanism 2's eccentricity, thereby finally changes the size of last pendulum rod 521 of pendulum angle mechanism 5 and lower pendulum rod 522's limit pendulum angle. The eccentric adjusting mechanism adopts a design layout scheme that a screw is actively supported and rotated (an eccentric adjusting wire 26 is rotated), and a nut (an eccentric sliding block 22) is driven to reciprocate linearly. The eccentric adjustment mechanism includes an eccentric adjustment wire 26. In eccentric slide was located to eccentric adjusting wire 26, and both ends all were equipped with copper sheathing 261 from top to bottom, on two copper sheathing 261 were fixed in upper and lower briquetting 210 respectively, eccentric adjusting wire 26 was connected the copper sheathing 261 through both ends and can be stably located in the eccentric slide, and copper sheathing 261 can be used for supporting eccentric adjusting wire 26 and in the stability of vertical direction, alleviates frictional resistance, also can restrict eccentric adjusting wire 26 at axial degree of freedom. The eccentric adjusting wire 26 is provided with a spiral matched with the eccentric sliding block 22, the eccentric sliding block 22 is provided with a through hole with threads, the eccentric adjusting wire 26 penetrates through the through hole to be in threaded connection with the eccentric sliding block 22, specifically, the eccentric adjusting wire 26 and the eccentric sliding block 22 are triangular thin-tooth bidirectional conduction sliding spirals, and the circumferential rotary motion of the spirals is converted into the axial reciprocating linear motion of the eccentric sliding block 22 through the biaxial fixing and rotating matching of the upper copper sleeve 216 and the lower copper sleeve 216, so that the eccentric adjusting mechanism is formed.

When the eccentric adjustment wire 26 is rotated, the eccentric slider 22 is driven to correspondingly slide up and down in the eccentric slideway, i.e. to make reciprocating linear motion along the axial direction, so as to adjust the eccentric distance between the eccentric slider 22 and the center of the circle on the eccentric disc 21. The distance between the eccentric slider 22 and the center of the circle on the eccentric disc 21 is changed, that is, the actual eccentricity of the pin shaft on the eccentric slider 22 is changed, so as to change the swing angle and the stroke of the connecting rod 6 hinged with the pin shaft, and achieve the purpose of finely adjusting and controlling the size of the limit swing angle of the upper swing link 521 and the lower swing link 522. After the eccentricity adjustment is completed, the eccentric sliding block 22 is locked on the eccentric adjusting wire 26 by using the upper locknut 221 and the lower locknut 222 arranged on the eccentric sliding block 22, so that the eccentricity of the eccentric mechanism 2 is prevented from changing suddenly in the process of rotary motion. In order to reduce the friction resistance, an "S-shaped" oil storage groove can be designed on the matching end surfaces of the two sides of the eccentric sliding block 22, and lithium-based lubricating grease is coated to form a sliding friction lubricating grease film layer.

Furthermore, in the above-mentioned eccentric mechanism 2, the split type radial sliding bearing 231 is adopted to support the shaft 27 to play a rigid supporting role, so as to limit the freedom degree of the shaft 27 moving towards two directions and slow down the circumferential rotation friction damping, and the eccentric mechanism has the advantages of simple structure, compact layout, good centering performance, layout space saving and convenient maintenance and operation.

The sliding bearing blocks 23 described above are split radial sliding bearing blocks. The main components are that the upper cover and the lower seat are designed into a step-shaped groove tenon matching structure, which is convenient for radial positioning, prevents the end face from moving in a staggered way and is tightened by bolts. The sliding bearing 231 is arranged on the sliding bearing seat 23, and the sliding bearing 231 and the shaft 27 form a group of sliding friction pairs after being assembled, so that the functions of system friction reduction and support are achieved. Preferably, the sliding bearing 231 is made of a tin-zinc-lead bronze ZCuPb5Sn5Zn5 material inlaid with a solid graphite lubricating rod, has the characteristics of obvious low hardness, high plasticity and small elastic modulus, has good antifriction and wear resistance, high compression and impact fatigue strength and good impact toughness, and the solid graphite inlaid on the surface layer has a self-lubricating function, so that the sliding friction pair can ensure a small enough friction coefficient even in a boundary friction and dry friction state, and the power loss of a system is reduced. The sliding bearing 231 is lubricated by lithium-based lubricating grease which is regularly supplied with oil from an oil filling hole in the top M16X1.5, and is convenient, efficient and rapid.

Specifically, the hinge sleeve 28 in the eccentric mechanism 2 adopts a longitudinally split hinge type half-clamping structure, under the condition that the circumferential excircle finish degree is not affected, the cross-over sleeve 28 is divided into an upper half sleeve and a lower half sleeve, two tenon and groove structures are designed on the excircle matching surface on one radial side of the two half sleeves and are hinged by a pin shaft to form a hinge type opening and closing mechanism capable of being opened and closed by 90 degrees up and down, a double key groove arranged by 180 degrees is formed in the inner circular surface of the cross-over sleeve 28, a flat key is connected in a built-in mode, and the two half sleeves and the shaft 27 are fixedly connected into a rigid integral component by a group of hexagon socket head bolts after being assembled in place with the shaft 27, so that circumferential positioning is realized. When the hinge sleeve 28 is rotated, the shaft 27 is rotated by the flat key. If the axial vibration quantity is larger during rotation, the axial baffle can be additionally arranged according to the actual working condition on site to carry out axial positioning. The inner and outer circumferential surfaces of the hinged sleeve 28 are H7/H6 matching surfaces, so the requirement of high finish is high, the outer circumferential surface of the hinged sleeve must adopt a built-in hinge and inner hexagon bolt structure design, and is provided with double key slots which are symmetrically arranged at 180 degrees and are matched and connected with double keys of the transition disc 25 to transmit the rotation torque.

Further, the inner circumferential surface of the hinge sleeve 28 is double-bonded to the shaft 27 and fixed circumferentially. The outer circumference of the hinged sleeve 28 and the transition disc 25 also adopt a double-key transition fit radial bearing mode, the chain wheel 29 is directly sleeved on the outer circumference of the hinged sleeve 28 in a mode of key-free connection of a middle through hole and small clearance fit, and is connected with the transition disc 25 and the eccentric disc 21 into a rigid integral component through hexagon socket head reamed bolts to form the eccentric mechanism 2 of the rounding machine. The above-described eccentric mechanism 2 rotates together with the shaft 27 in synchronization with the axis of the sliding bearing 231. The sprocket 29 is connected to the reducer sprocket 122 via the chain 24, and the chain 24 rotates the sprocket 29, and at the same time, the sprocket 29 rotates the hinge sleeve 28 connected thereto and the shaft 27 connected to the hinge sleeve 28. The hinge sleeve 28 is provided in a one-side opening and closing manner to facilitate the disassembly and assembly.

Because the eccentric disc 21 is cantilevered at one end of the shaft 27, a sliding bearing seat is arranged at the other end of the shaft 27, preferably, because the eccentric disc 21 is cantilevered at the outer end face of the shaft 27, the eccentric disc is subjected to large bending stress, the shaft 27 has risks of bending deformation and fatigue fracture, and system rigidity is influenced, therefore, a virtual constraint implementation scheme is adopted in motion design, a group of rigid supports is added, 2 sets of sliding bearing seats 23 are adopted, a structural mode of same side, small interval, side-by-side arrangement and double-fulcrum bearing is adopted, a cantilever beam bearing force arm is shortened, system rigidity is improved, the occurrence of the condition that the edge of the shaft 27 is contacted with the sliding bearing 231 due to unbalance loading can be effectively prevented, the stress condition of components is improved, and the service life is prolonged.

Specifically, the specific motion and torque transmission between the power mechanism 1 and the eccentric mechanism 2 is as follows: the bearing torque transmitted by the power mechanism 1 is transmitted to a group of hexagon socket head cap reaming bolts through a chain wheel 29, and the transition disc 25 and the eccentric disc 21 are driven through the connection of the reaming bolts. The articulated sleeve 28 is fixed circumferentially coaxially to the shaft 27 and rotates simultaneously circumferentially coaxially and synchronously with the sliding friction support of the 2 sets of sliding bearings 231, outputting a torque.

In the design of the scheme, the eccentric mechanism 2 and the rocker mechanism 3 are concretely realized through the connecting rod 6. The connecting rod 6 is a strip-shaped plate-type component, has 3 degrees of freedom in space, performs rotation and displacement actions of variable posture tracks, is complex in motion analysis process, adopts integral sliding bearings on two sides, and is hinged with the eccentric mechanism 2 and the rocker arm mechanism 3 sequentially through the pin shaft 261 to play a middle conduction transition role. The change of the running track parameters is realized by adjusting the eccentric amount of the upper-stage eccentric mechanism 2, and has great influence on the swing angle of the lower-stage rocker mechanism 3.

Furthermore, in other embodiments, a cantilevered eccentric disc 21 may be further disposed at the other end of the shaft 27, that is, two cantilevered eccentric discs 21 are disposed at two ends of the same shaft 27, the transmission members between the two eccentric discs 21 and the shaft 27 are the same, and the number of the eccentric runners and the eccentric sliding blocks 22 on the split eccentric discs 21 may be the same or different, and may be adjusted and set according to actual working requirements.

Further, as shown in fig. 3, 4 and 7, the present invention provides a rocker mechanism 3 of a low pair multi-rod mechanism rounding machine, which is disposed downstream of the eccentric mechanism 2 and includes a rocker 31 and a rocker slider 32. One end of the rocker 31 is connected to the eccentric slider 22 through the link 6, the other end of the rocker 31 is connected to the traverse guide 43 of the traverse mechanism 4 through the traverse guide pin 431, and the rocker slider 32 makes a linear reciprocating motion along the rocker 31.

Specifically, as shown in fig. 8 to 10, the rocker arm 31 is formed by mirror-butting two identical groove-shaped steels 311. Wherein the recess side mirror image opposition butt joint of two the same channel steel 311, the one end recess wall of channel steel 311 is higher than the other end recess wall, forms two wall height differences of recess promptly, therefore the mirror image butt joint back, longer a set of recess wall mutual basis, the opposition is but form the space between the shorter a set of recess wall, all form the rocking arm slide between two recesses of the channel steel 311 after the butt joint and between two shorter recess walls, rocking arm slider 32 matches with the rocking arm slide and is the straight reciprocating motion along the rocking arm slide.

The rocker arm mechanism 3 is an assembly component, and a sliding screw pair fine adjustment mechanism, namely a rocker arm adjustment mechanism, is designed in the rocker arm mechanism. The rocker arm adjustment mechanism includes a rocker arm adjustment wire 33 and a rocker arm nut 34.

The rocker nut 34 and the rocker adjusting wire 33 are a sliding screw pair mechanism, a transmission mode that the nut (the rocker nut 34) rotates, the lead screw (the rocker adjusting wire 33) axially moves and prevents rotation is adopted, and a rocker slideway formed by the rocker 31 plays a role of a friction anti-wear and anti-rotation mechanism, so that the rocker adjusting wire 33 can be prevented from synchronously rotating along with the rocker nut 34.

The rocker arm adjusting wire 33 is arranged in the rocker arm slideway, the rocker arm adjusting wire 33 is provided with a thread matched with the rocker arm nut 34, the rocker arm nut 34 is screwed in from the upper end of the rocker arm adjusting wire 33, the lower end of the rocker arm adjusting wire 33 is fixedly connected with the rocker arm sliding block 32, and the rocker arm nut 34 rotates in the circumferential direction and can drive the rocker arm adjusting wire 33 and the rocker arm sliding block 32 to slide up and down in the rocker arm slideway. Therefore, when the rocker arm adjusting mechanism is operated, the rocker arm adjusting wire 33 only makes reciprocating linear motion in the vertical axial direction, and does not make circumferential rotation motion. The lower end face of the rocker arm adjusting wire 33 is provided with a detachable internal thread gasket, the top end of the rocker arm sliding block 32 is provided with a concave platform, the internal thread gasket is matched with the concave platform at the top end of the rocker arm sliding block 32, when the 3 pieces (the rocker arm adjusting wire 33, the internal thread gasket and the concave platform at the top end of the rocker arm sliding block 32) are assembled in place, the internal thread gasket and the rocker arm adjusting wire 33 can be connected into a rigid integral component in a spot welding mode, and the rocker arm sliding block 32 is longitudinally lifted or pressed down by the rocker arm adjusting wire 33. In order to facilitate field operation, through holes which are symmetrically distributed are drilled on the outer circle surface of the rocker nut 34, and a long rod handle 341 can be inserted, so that labor-saving operation of operators is facilitated. After the adjustment is completed, the rocker arm adjusting screw 33 can be locked and positioned by using 2 locknuts 37 arranged above the rocker arm nut 34, so that the parameter change of the hinged position of the pull rod pin shaft 411 is prevented. In order to reduce the friction resistance, S-shaped oil storage grooves can be designed on the matching end surfaces of the two sides of the rocker sliding block 32, lithium-based lubricating grease is coated on the S-shaped oil storage grooves to form a sliding friction lubricating grease film layer, the power loss of the power mechanism is reduced, and the rotation precision and the flexibility of the rocker adjusting mechanism are improved.

The rocker adjusting wire 33 and the rocker slider 32 are driven to slide up and down in the rocker slideway formed by the rocker 31 by the circumferential rotation of the rocker nut 34, so that the hinge position parameters of the pull rod 41 and the pull rod pin shaft 411 in the transverse moving mechanism 4 are changed, and the displacement stroke of the transverse moving slider 42 hinged with the pull rod 41 is indirectly changed. The bottom of the rocker 31 is provided with a through hole with a diameter of phi 30, and the rocker is hinged and fixed with a transverse guide rail 43 through a pin shaft transverse guide rail pin shaft 431 to form an outer pair of the rocker mechanism 3, and the hinged part can symmetrically swing at a large angle from left to right.

As shown in fig. 8, the top of the rocker arm 31 is provided with a rocker arm gland 35 with a split structure design, the rocker arm gland 35 is an independent integral component and adopts a square integral boring structure, a gland bearing 351 is arranged in the rocker arm gland 35, the inner hole of the cavity of the gland bearing 351 adopts a semi-permeable integral design scheme, one side of the outer skin of the gland bearing 351 is fixed by the upper end assembly matching surface of the rocker arm 31, and the other side is positioned by the inner concave platform of the rocker arm gland 35. The design scheme has the advantages of simple structure, few components and high reliability, and particularly, the outer end face of the transmission side is designed into an integral structure, so that the traditional outer gland design is omitted, the structure is simple, and the mechanical processing, assembly and maintenance are convenient.

As shown in fig. 8, the side surface of the rocker arm 31 is fixedly connected with a rocker arm lug 36 by a bolt connection mode to form an inner pair of the rocker arm mechanism 3, and the rocker arm lug 36 is hinged with the connecting rod 6.

Preferably, gland bearings 3516208 are deep groove ball bearings.

As shown in fig. 3 and 4, the traverse mechanism 4 is horizontally provided downstream of the swing arm mechanism 3, and includes a traverse guide 43, a pull rod 41, and a traverse slider 42. The traverse slide 42 is arranged on the traverse guide rail 43, one end of the pull rod 41 is connected with the rocker slide 32, and the other end is connected with the traverse slide 42. The rocker arm slide 32 moves and simultaneously drives the traverse slide 42 to do linear reciprocating motion along the traverse guide rail 43 through the pull rod 41.

As shown in fig. 11, the traverse guide 43 is a double-pair steel-structure support rivet welded part including a hinge revolute pair and a sliding revolute pair, and is formed by combining and welding 11# thick-wall channel steel and 20 thick steel plates, and a hinge lug plate with a built-in traverse guide pin copper sleeve 432 is separately welded at the tail part of the transverse guide rail. Two groups of symmetrically arranged thick-wall channel steel form a combined transverse sliding way, and a transverse sliding block 42 is in sliding friction fit with the transverse sliding way. In order to reduce friction resistance, a sliding plate made of aluminum bronze ZCuAl10Fe3 is embedded on the bottom matching surface of the transverse sliding block 42, an S-shaped oil storage tank is designed, and lithium-based lubricating grease is coated on the matching surface of the thick-wall channel steel slideway. The traverse guide 43 serves two purposes: the two degrees of freedom in movement in two directions in space of the rocker arm 31 are limited, only one degree of freedom in rotation is reserved, the rocker arm can only swing left and right around the transverse moving guide rail pin shaft 431, one degree of freedom in radial movement and one degree of freedom in rotation in space of the transverse moving slider 42 are limited, only one degree of freedom in longitudinal movement is reserved, and the rocker arm can only do reciprocating linear motion along the built-in combined slide way of the thick-wall channel steel.

As shown in fig. 12 to 14, in the traverse mechanism 4, two tie rods 41 are provided, and one end of each tie rod 41 is a sleeve having an internal thread and the other end is provided with a connecting hole.

In order to accurately adjust the stroke of the transverse moving slide block 42 and the swing angles of the upper swing rod 521 and the lower swing rod 522, part machining and assembling errors are eliminated to the maximum extent, and the actual working condition parameter requirements of field motion design are met. The transverse moving mechanism 4 is provided with a transverse moving adjusting mechanism which comprises a pull rod adjusting wire 44. The tie rod adjusting wires 44 are of a stud bolt structure, one end of the stud bolt is provided with a left-handed external thread, the other end of the stud bolt is provided with a right-handed external thread, and two ends of the stud bolt can be screwed with corresponding internal threads of the sleeves of the two tie rods 41 respectively. After screwing, 3 (two pull rods 41 and a stud structure) are combined into an integral rigid mandril (a pull rod adjusting wire 44) to drive the transverse moving slide block 42 to do reciprocating linear motion. Preferably, the pull rod 41 can be directly processed by milling and drilling holes on two sides of a phi 45 seamless steel pipe, and a metric fine internal thread with left/right screwing directions is tapped on the respective end faces of the pull rod. When the pull rod adjusting wire 44 is rotated, the length of the corresponding pull rod 41 is lengthened or shortened along with the increase or decrease of the screwing length of the thread pair, and the limit stroke of the transverse moving slide block 42 is changed, so that the purpose of finely adjusting and controlling the limit swing angles of the upper swing rod 521 and the lower swing rod 522 is achieved, and the biting length of a rolled piece is correspondingly lengthened or shortened.

As shown in fig. 3, 4, 15, 16 and 17, the rounding machine of the present invention further includes a swing angle mechanism 5, the swing angle mechanism 5 is disposed at the downstream of the traverse mechanism 4, and the swing link 52 of the swing angle mechanism 5 is directly connected to the roll 7 of the circumscribed rolling mill through a rear shaft sleeve 53. The swing angle mechanism 5 comprises a guide rod 51 and a swing rod 52. Wherein the swing link comprises an upper swing link 521 and a lower swing link 522.

Specifically, as shown in fig. 15, the center (geometric center) of the guide rod 51 is vertically connected to the traverse slide 42 of the traverse mechanism 4, the upper end and the lower end of the guide rod 51 are slidably connected to the upper swing link 521 and the lower swing link 522, respectively, and the upper swing link 521 and the lower swing link 522 are mirror-symmetrical with respect to the traverse guide 43, and the free end sides (the sides close to the paper surface) of the upper swing link 521 and the lower swing link 522 are connected to the roll 7 of the rolling mill through the rear bushing 53 and the bearing, respectively, for driving the roll 7 to move.

The guide rod 51 and the traverse slide block 42 are fixedly connected together in a bolt assembly mode to form a group of sliding friction sliding pairs, an upper swing rod 521 and a lower swing rod 522 are synchronously driven by bearings 511 which are symmetrically arranged on the upper side and the lower side of the guide rod 51 in a hinged mode, the upper rear shaft sleeve 53 and the lower rear shaft sleeve 522 are jointly driven to swing, reciprocating linear motion of the guide rod 51 is converted into mirror-symmetric reverse swing of 2 rollers 7 on a rolling mill (in the embodiment, a 350 rolling mill 8 is selected) connected with the rear shaft sleeve 53, biting and spitting-out actions of a rolled piece are completed, and rolling torque is output.

Further, the upper swing link 521 and the lower swing link 522 are both long arm type flange members, and are connected with the rear shaft sleeve 53 through flange bolts and end face flat keys, and transmit torque by means of a pressing static friction force between two end faces (preferably, a connection scheme of a hinge bolt can also be adopted to improve the bearing torque of the system). Built-in slideways with symmetrical structures are bored on the central axis of the upper swing rod 521 and the lower swing rod 522 and are in sliding fit with one side of the bearing outer ring of the bearing 511 to play a guiding role.

Preferably, a set of baffle plates are added on the end surfaces of the two sides of the upper swing link 521 and the lower swing link 522, and are connected with the upper swing link 521 and the lower swing link 522 into a whole in a fixing mode of welding or bolt connection, so that the bearing 511 is prevented from sliding out of the sliding chute when bearing deformation occurs. The rear shaft sleeve 53 is of a sleeve type alloy forging structure, the 35CrMo material is subjected to quenching and tempering, the HBS260-280 is adopted, a double-oblate symmetrical structure with the same size as the shaft neck of the roller 7 is formed after an inner hole is bored, a phi 70 positioning hole is designed at the end part of the inner hole, the inner hole and the roller 7 form clearance fit of about 20mm, and the on-line rolling mill is convenient to disassemble and assemble.

The guide rod 51 is directly formed by linear cutting after steel plate lofting, is a plate-type component which is symmetrical up and down, is provided with through holes at two sides, is in clearance fit with a pin shaft H7/H6 and then is in spot welding connection, and is provided with a bearing 6208 on the pin shaft as a sliding hinge pair in surface-to-surface contact to be matched with the slide ways of the upper swing rod 521 and the lower swing rod 522. After the bearing 6208 is assembled on the pin shaft, the end face of the bearing 6208 is fixed by a pressing plate axial pressing plate bolt, so that the positioning failure of the bearing 6208 during bearing is prevented.

As shown in fig. 4, as seen from the top view of the rounding machine, the guide rod 51, the upper swing link 521 and the lower swing link 522 are in a layered arrangement structure, and a gap amount of 30mm is formed in the middle, so that structural interference during movement of 3 persons is prevented, when the gap amount is too large, the system is not rigid enough and is easy to swing, and when the gap amount is too small, the system is easy to move and interfere, and the bearing plastic deformation can cause rubbing and impact, which affects the operation reliability of the system. The adjustment of the clearance amount can be realized by modifying the axial elongation of the pin shaft through design according to the actual working condition on site.

Preferably, the bearing 511 is a deep groove ball bearing, in particular a 6208 deep groove ball bearing.

As shown in fig. 16 and 17, in this embodiment, the working process of the low-pair multi-rod mechanism rounding machine provided by the present invention is further described by taking the example of assembling the low-pair multi-rod mechanism rounding machine with a fitting.

The assembly with the 350 rolling mill 8 is realized through the rear shaft sleeves 53 arranged on the upper swing rod 521 and the lower swing rod 522, after the assembly is completed, the rounding machine is started, the 2 conjugate pass rollers 7 of the 350 rolling mill can synchronously, regularly, symmetrically and reversely swing in a symmetrical mode, the same-side steel biting/spitting sequential rolling action of the rolling mill is completed, the cold rolling torque is output, and work is done outwards.

Firstly, the power mechanism 1 is started, the distance between the motor 11 and the speed reducer 12 is adjusted, the positions of the motor 11 and the speed reducer 12 are locked after a proper position is found, the motor 11 is started, the torque output by the motor 11 is transmitted to the speed reducer 12 through the V belt 13, the speed is reduced and the distance is increased after the internal gear meshing transmission of the well speed reducer 12, and the power is continuously transmitted to the eccentric mechanism 2 at the downstream of the power mechanism 1 through the chain 24.

The sprocket 29 of the eccentric mechanism 2 is rotated by the sprocket 29 to drive the shaft 27 to rotate, thereby driving the eccentric disc 21 to rotate. The eccentric disc 21 rotates and drives the eccentric slide block 22 thereon to rotate, the eccentric slide block 22 rotates and further drives the connecting rod 6 connected therewith to do periodic motion, the connecting rod 6 moves and drives the rocker arm 31 connected therewith to do rocker arm motion, the rocker arm 31 moves and drives the rocker arm slide block 32 thereon to move, the rocker arm slide block 32 moves and drives the pull rod 41 of the traversing mechanism 4 connected therewith to move, the pull rod 41 moves and drives the traversing slide block 42 to move along the traversing guide rail 43, the traversing slide block 42 moves along the traversing guide rail 43 and drives the guide rod 51 of the swing angle mechanism 5 to move, the guide rod 51 moves and further drives the upper swing rod 521 and the lower swing rod 522 to swing around the rear shaft sleeve 53, the upper swing rod 521 and the lower swing rod 522 swing and simultaneously drive the roller 7 of the 350 mill 8 connected with the rear shaft sleeve 53 to move, finally, the synchronous periodic, regular, symmetrical and reverse swinging of the rollers 7 is realized, and the same-side steel biting/spit, and outputting cold rolling torque to do work externally.

During the operation of the rounding machine, the respective mechanisms of the rounding machine may be adjusted according to the actual requirements of the swing ranges of the upper swing link 521 and the lower swing link 522, and for example, the swing angles of the upper swing link 521 and the lower swing link 522 may be finely adjusted by adjusting the eccentric adjustment mechanism of the eccentric mechanism 2, the swing arm adjustment mechanism of the swing arm mechanism 3, and the traverse adjustment mechanism of the traverse mechanism 4. Meanwhile, the output power can be adjusted by adjusting the power mechanism 1.

In a word, the utility model provides a low vice multi-rod mechanism rounding machine's unique part lies in, for the accurate regulation and control of on-the-spot executive component limit pivot angle and rolling precision, all independent design assists guiding mechanism in above-mentioned eccentric mechanism 2, rocker arm mechanism 3 and sideslip mechanism 4, through the vice circumference intermittent type rotation of inside slip spiral, carry out the accurate control of eccentricity, rocker arm pivot angle and sideslip stroke to furthest's elimination parts machining and assembly error satisfy the actual demand of on-the-spot operating mode parameter.

In the design of the scheme, the hinged revolute pairs of all the connecting rods are rigidly supported by the copper sleeves, so that the friction power loss of a system is reduced, the operation flexibility is improved, and the copper sleeves are required to have enough strength, rigidity, wear resistance and abrasion reduction. In consideration of the actual working conditions of on-site low-speed and continuous transmission and good manufacturing manufacturability of materials, the design adopts the aluminum bronze ZcuAL10Fe3 with higher mechanical strength and wear resistance, and has the remarkable characteristics of low hardness, high plasticity, small elastic modulus, better running-in property, compliance and embeddability and higher compression-resistant and impact-resistant load fatigue strength.

To sum up, the utility model provides a pair of low vice multi-rod mechanism rounding machine has: the device has the remarkable characteristics of small volume, light weight, compact layout structure, large transmission power and high adjustment precision, and is particularly suitable for small-batch, multi-batch and short-fixed-length end cold rolling straightening and circle pressing shaping of small-specification bar products.

The utility model provides a pair of low vice bull mechanism rounding machine, when adopting high-quality forging heat treatment alloy steel as key atress position material, when the local design intensity and the system rigidity of suitable increase this mechanism, this mechanism does and uses as general cold rolling calender, carries out cold rolling extension aligning to the part in, small dimension rod product and handles.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A low-pair multi-rod mechanism rounding machine is characterized by comprising a power mechanism, an eccentric mechanism, a rocker arm mechanism, a transverse moving mechanism and a swing angle mechanism, wherein,

the power mechanism is used for providing power;

the eccentric mechanism is arranged at the downstream of the power mechanism and is used for converting the power of the power mechanism into rotary motion and then transmitting the rotary motion to the rocker arm mechanism;

the rocker arm mechanism is arranged at the downstream of the eccentric mechanism and swings under the action of the eccentric mechanism and drives the transverse moving mechanism to move;

the transverse moving mechanism is arranged at the downstream of the rocker arm mechanism, and the transverse moving mechanism can drive the swing angle mechanism to move while moving;

the swing angle mechanism is also connected with an upper roller and a lower roller of the rolling mill and is used for driving the upper roller and the lower roller to do synchronous reverse circular rotary swing.

2. The low pair multi-bar mechanism rounding machine according to claim 1,

the eccentric mechanism comprises a shaft, a transmission part, an eccentric disc and an eccentric sliding block, and the shaft is arranged on the bearing block; the transmission part is sleeved on the shaft, the eccentric disc is connected with the transmission part to rotate under the driving of the transmission part, the eccentric disc is located on the outer side of one end of the shaft, the eccentric sliding block is detachably arranged along the radial direction of the eccentric disc and can do circular motion along with the eccentric disc, and the eccentric sliding block is connected with the rocker arm mechanism which rotates around an axis parallel to the axis of the eccentric disc.

3. The low pair multi-bar mechanism rounding machine according to claim 2,

the eccentric disc is split type, and is formed by two identical class semicircle boards in mirror image butt joint, and butt joint department is formed with eccentric slide, eccentric slider slidable ground is located in the eccentric slide.

4. The low pair multi-bar mechanism rounding machine according to claim 3,

the eccentric mechanism further comprises an eccentric adjusting mechanism, the eccentric adjusting mechanism comprises an eccentric adjusting wire, the eccentric adjusting wire is rotatably arranged in the eccentric slide way, the eccentric adjusting wire is provided with threads matched with the eccentric sliding block, the eccentric sliding block is provided with a through hole with threads, and the eccentric adjusting wire penetrates through the through hole and is in threaded connection with the eccentric sliding block.

5. The low pair multi-bar mechanism rounding machine according to claim 1,

the rocker arm mechanism comprises a rocker arm and a rocker arm sliding block, a rocker arm sliding way is arranged in the rocker arm, the rocker arm sliding block can be slidably arranged in the rocker arm sliding way and hinged to the transverse moving mechanism, one end of the rocker arm is connected with the eccentric mechanism through a connecting rod, and the other end of the rocker arm is arranged on the base in a swinging mode.

6. The low pair multi-bar mechanism rounding machine according to claim 5,

the rocker arm mechanism further comprises a rocker arm adjusting mechanism, the rocker arm adjusting mechanism comprises a rocker arm adjusting wire and a rocker arm nut, the rocker arm adjusting wire is arranged in the rocker arm slide way, and the rocker arm nut is arranged on the rocker arm adjusting wire and can be followed by the rocker arm adjusting wire to axially rotate.

7. The low pair multi-bar mechanism rounding machine according to claim 1,

the transverse moving mechanism comprises a transverse moving guide rail and a transverse moving slide block, the transverse moving guide rail is arranged along the rolling central line direction of the upper roller and the lower roller, and the transverse moving slide block is slidably arranged in the transverse moving guide rail.

8. The low pair multi-bar mechanism rounding machine according to claim 7,

the transverse moving mechanism further comprises a transverse moving adjusting mechanism, the transverse moving adjusting mechanism comprises pull rod adjusting wires, the pull rod adjusting wires are of a stud bolt structure, one end of each stud bolt is provided with a left-handed external thread, the other end of each stud bolt is provided with a right-handed external thread, and two ends of each stud bolt can be screwed with corresponding internal threads of sleeves of the two pull rods;

the pull rod is used for connecting the rocker arm mechanism and the transverse moving mechanism.

9. The low pair multi-bar mechanism rounding machine according to claim 1,

the swing angle mechanism comprises a guide rod, an upper swing rod and a lower swing rod, the guide rod is slidably connected with the transverse moving mechanism, one end of each of the upper swing rod and the lower swing rod is connected with two ends of the guide rod respectively, and the other end of each of the upper swing rod and the lower swing rod is connected with the roller through a bearing sleeve; and swing rod slideways are arranged on the central axes of the upper swing rod and the lower swing rod and are used for connecting two ends of the guide rod.

10. The low pair multi-bar mechanism rounding machine according to claim 9,

gaps are arranged at the ends, connected with the guide rod, of the upper swing rod and the lower swing rod, a group of baffles are additionally arranged on the end faces of the two sides of the upper swing rod and the end faces of the two sides of the lower swing rod, and the baffles, the upper swing rod and the lower swing rod are connected into a whole.

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