CN210172460U - Feeding and core fixing device for steel ball mill production line - Google Patents

Abstract

The utility model relates to a core device is decided in pay-off for steel ball mill production line, it includes: the medium-frequency heating furnace assembly comprises at least one heating coil mechanism; the feeding roller component is arranged at the input end and/or the output end of the intermediate frequency heating furnace component and comprises a rotatable roller, and a circle of groove I for bearing a bar is formed in the peripheral surface of the roller; the fixed core assembly is arranged between the adjacent heating coil mechanisms and comprises a sliding block and a groove II arranged above the sliding block, the groove II is provided with a third inclined surface and a fourth inclined surface formed on the surface of the sliding block, and when a bar is placed in the groove II, the bar is simultaneously in contact with the third inclined surface and the fourth inclined surface. The problem of getting rid of the material of rolling mill bar can be solved, the clearance distance between the adjacent heating coil mechanism can also be reduced and the calorific loss of bar is reduced.

Description

Feeding and core fixing device for steel ball mill production line

Technical Field

The utility model belongs to the automatic production equipment field relates to a bar material feeding unit, especially relates to a core device is decided in pay-off for steel ball mill production line, can be used to in the rolling production of steel ball.

Background

The existing medium and small sized wear-resistant steel balls are produced by a hot rolling process, and a medium frequency induction adding mode is mostly used. In the production process, the most outstanding problem is that bar material easy decentraction leads to getting rid of the material when rotatory, damages intermediate frequency heating coil mechanism, and bar material still is easy and coil contact destruction is insulating when rotatory, strikes sparks and punctures the silicon controlled rectifier, has the potential safety hazard and the accessory consumes very high, the cost-push. Therefore, a feeding device is urgently needed to solve the problem.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a core device is decided in pay-off for steel ball rolling mill production line can solve the material problem of getting rid of rolling mill bar.

In order to achieve the above purpose, the utility model adopts the technical scheme that:

the utility model provides a pay-off core fixing device for steel ball mill production line, it includes:

the medium-frequency heating furnace assembly comprises at least one heating coil mechanism;

the feeding roller component is arranged at the input end and/or the output end of the intermediate frequency heating furnace component and comprises a rotatable roller, and a circle of groove I for bearing a bar is formed in the peripheral surface of the roller;

the fixed core assembly is arranged between the adjacent heating coil mechanisms and comprises a sliding block and a groove II arranged above the sliding block, the groove II is provided with a third inclined surface and a fourth inclined surface formed on the surface of the sliding block, and when a bar is placed in the groove II, the bar is simultaneously in contact with the third inclined surface and the fourth inclined surface.

Optimally, the core fixing assembly further comprises a base, the base is provided with a mounting edge, the sliding block is arranged on the mounting edge, and the sliding block is bent at the front side edge and the rear side edge of the bar conveying direction and clamps the mounting edge.

Further, decide core subassembly still includes the apron, the apron sets up II tops of recess and right the upper end of slider forms spacingly.

Optimally, a chamfer is arranged on one side of the sliding block facing the incoming material direction and close to the groove II.

Preferably, the slide is made of hot work die steel.

Optimally, the fixed core assembly further comprises a pressure plate II arranged above the sliding block.

Further, the minimum distance between the lower end face of the material pressing plate II and the upper surface of the bar is 3-5 mm.

Further, the minimum distance between the material pressing plate II and the third inclined surface and the minimum distance between the material pressing plate II and the fourth inclined surface are smaller than the outer diameter of the bar stock.

Furthermore, the upper and lower positions of the lower end face of the material pressing plate II are adjustable to adapt to the change of the diameter of the bar stock.

Preferably, the angle β between the third and fourth ramps is less than 90 °.

Optimally, the gap distance between the adjacent heating coil mechanisms is less than 150 mm.

Preferably, the groove I has a first bevel and a second bevel, the bar contacting both the first bevel and the second bevel when placed in the groove I.

Further, the first inclined surface and the second inclined surface respectively form an included angle α with the intersecting edge of the plane passing through the axis, wherein the included angle α is smaller than 90 degrees.

Further, the feeding roller assembly further comprises a material pressing plate I arranged above the roller.

Furthermore, the minimum distance between the lower end face of the pressure plate I and the upper surface of the bar is 3-5 mm.

Furthermore, the minimum distance between the pressure plate I and the first inclined surface and the minimum distance between the pressure plate I and the second inclined surface are smaller than the outer diameter of the bar stock.

Furthermore, the upper position and the lower position of the lower end face of the material pressing plate I are adjustable so as to adapt to the change of the diameter of the bar stock.

Preferably, the roller is separable into a first portion and a second portion along a plane passing through an axial center line thereof.

Furthermore, the axial outer side of the roller extends far to form a connecting part, the connecting part can be separated into a branch connecting part I and a branch connecting part II along with the first part and the second part, a threaded hole in the branch connecting part I and a smooth hole in the branch connecting part II are formed through the connecting part, and the inner diameter of the smooth hole is larger than that of the threaded hole.

Preferably, the branch connecting part II is provided with a plain surface, and the smooth hole is opened in the plain surface.

Because of the application of the technical scheme, compared with the prior art, the utility model has the following advantages:

the utility model discloses a pay-off core fixing device for steel ball rolling mill production line, recess II in the core fixing component has third inclined plane and fourth inclined plane, and third inclined plane and fourth inclined plane can be spacing with the bar centre gripping, have restricted the bar and have got rid of the material. And the groove II can adapt to bars with different diameters in a certain range. Due to the fact that the bar stock is prevented from throwing materials, the heating coil mechanism is prevented from being damaged by throwing materials. And because the fixed core assembly comprises the slide block, the slide block can be made as short as possible in the advancing direction of the bar stock, namely, the gap distance between the adjacent heating coil mechanisms is reduced, so that the heat loss of the bar stock is reduced when the bar stock runs between the heating coil mechanisms, and the heating efficiency of the heating coil mechanisms is improved.

Further, because the groove I in the feeding roller wheel assembly is provided with the first inclined surface and the second inclined surface, the bar stock can be clamped and limited by the first inclined surface and the second inclined surface, and the bar stock is simultaneously contacted with the first inclined surface and the second inclined surface, so that the friction force between the roller wheel and the bar stock can be increased, the conveying efficiency is increased, and the bar stock can be limited from being thrown.

Furthermore, when an included angle formed between the first inclined surface and the second inclined surface or between the third inclined surface and the fourth inclined surface is smaller than 90 degrees, the material throwing of the bar stock can be well limited. When the included angle is set to be 55-65 degrees, for example 60 degrees, the bar stock is not easy to throw out, so that the throwing of the bar stock can be better limited.

Additionally, the utility model discloses the material board I is pressed with the pressure board II to the preferred setting, owing to set up respectively in II tops of recess I and recess, forms to block the bar, consequently can further restrict the bar and get rid of the material. When the distance between the pressure plate I and the first inclined plane and the distance between the pressure plate I and the second inclined plane are both smaller than the outer diameter of the bar, the bar is further limited not to be thrown out of the groove I.

Because the phenomenon of throwing the material of the bar stock is reduced and even stopped, the stable rolling can be realized, the heating coil mechanism is protected, and the equipment operation rate is obviously improved.

Drawings

Some specific embodiments of the present invention will be described in detail hereinafter, by way of illustration and not by way of limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:

FIG. 1 is a prior art feeding apparatus for a steel ball mill production line;

FIG. 2 is a side view of FIG. 1;

FIG. 3 is a schematic structural diagram of a feeding and core-fixing device for a steel ball mill production line according to a preferred embodiment of the present invention;

FIG. 4 is a side view of FIG. 3;

FIG. 5 is an enlarged view of the roller of FIG. 4;

FIG. 6 is an axial view (partially in perspective) of the roller of FIG. 4;

FIG. 7 is a schematic structural view (partially in perspective) of the centering assembly of FIG. 3;

FIG. 8 is a schematic view of the base construction (partially in perspective);

fig. 9 is a schematic view of a slider structure.

Wherein the reference numerals are as follows:

1. a conveying roller; 2. a conveying roller; 3. a heating coil; 4. a bar stock; 5. a conveying space; 6. a gap;

10. a feeding roller assembly; 11. a roller; 111. a first portion; 112. a second portion; 12. a material pressing plate I; 13. a connecting portion; 131. a branch connecting part I; 1311. a threaded hole; 132. a branch connection part II; 1321. smooth holes; 1322. cutting into a plain noodles; 14. a sprocket; 15. a groove I; 151. a first inclined plane; 152. a second inclined plane; 16. a hanging plate I;

20. a core fixing component; 21. a slider; 211. a first folded edge; 212. a second folded edge; 213. a contact edge; 214. chamfering; 22. a base; 221. installing an edge; 23. a material pressing plate II; 24. a cover plate; 25. a groove II; 251. a third inclined plane; 252. a fourth slope; 26. a hanging plate II;

30. a medium frequency heating furnace assembly; 31. a heating coil mechanism; 32. an intermediate frequency furnace body.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

As shown in fig. 1, a bar stock is conveyed by conveying rollers 1 and 2 and heated by four heating coils 3. Wherein, the conveying rollers 1 and 2 are driving rollers, the bar stock is transported from right to left, and is sequentially heated to 900-1000 ℃ by four heating coils 3 and then sent into a steel ball rolling mill (not shown) on the left side. After being bitten by a steel ball mill, the bar rotates and advances forwards. Therefore, the part of the bar stock far away from the bite of the steel ball mill can generate material throwing if the part is not limited by the conveying rollers 1 and 2 properly. Each group of conveying rollers 1 or 2 is provided with an upper roller and a lower roller which are matched with each other. Due to the fact that the device needs to be suitable for the bars 4 with different diameters, as shown in fig. 2, the conveying space 5 between the two conveying rollers 1 (or the conveying rollers 2) in each group is often designed to be relatively spacious, and at the moment, if the thinner bars 4 are processed, the bars 4 are easy to throw in the conveying space 5. The intermediate frequency heating coil 3 (see fig. 1) can be damaged by the material throwing of the bar stock, the bar stock is easy to contact with the coil to damage insulation when rotating, the silicon controlled rectifier is broken through by striking fire, the potential safety hazard is caused, the accessory consumption is high, and the cost is increased. In addition, in order to adapt to the bars 4 with different diameters, a certain gap 6 often exists between the two conveying rollers 1 of each group, the bars 4 are easy to separate from the gap 6, potential safety hazards are caused, the separated bars 4 are not easy to enter the conveying space 5 again from the gap 6, maintenance needs to be stopped, and production efficiency is reduced.

As shown in figure 3, the utility model discloses an improve structure for the pay-off of steel ball rolling mill production line is decided core device and is included pay-off roller subassembly 10, decides core subassembly 20 and intermediate frequency heating furnace subassembly 30. Wherein, the feeding roller component 10 is used for actively conveying the bar stock, the core fixing component 20 is used for supporting the bar stock to prevent the bar stock from bending, and the intermediate frequency heating furnace component 30 is used for heating the bar stock before hot rolling.

The intermediate frequency heating furnace assembly 30 comprises an intermediate frequency furnace body 32 and four heating coil mechanisms 31 arranged above the intermediate frequency furnace body 32, and the number of the heating coil mechanisms 31 is not limited and depends on production requirements.

The feeding roller assembly 10 is arranged at the input end at the right side and the output end at the left side of the intermediate-frequency heating furnace assembly 30 at the same time, and the bar stock is conveyed from the input end to the output end in the figure 3. Of course, the feed roller assembly 10 may be provided only at the input end or the output end of the intermediate frequency heating furnace assembly 30.

The feeding roller assembly 10 comprises a rotatable roller 11 and a pressure plate I12 arranged above the roller 11.

As shown in fig. 4, the feeding roller assembly 10 further includes a sprocket 14, and the sprocket 14 is rotated by a motor to rotate the roller 11.

The global I15 of a circle recess that is provided with of running roller 11, I15 of recess are used for placing and bearing the bar. The groove i 15 has a first inclined surface 151 and a second inclined surface 152 formed on the surface of the roller 11. The horizontal distance between the first ramp 151 and the second ramp 152 tends to decrease from the radially outer side to the radially inner side, and the bar can be guided to the bottom of the groove i 15 and clamped. When placed in groove I15, the bar will contact both the first ramp 151 and the second ramp 152, which increases friction by providing two simultaneous contact points for the bar with groove I15, which facilitates more efficient bar transport. (referring to FIG. 1, even if the conveying roller between the heating coil mechanisms 31 is replaced with the slider 21, that is, the conveying roller between the heating coil mechanisms 31 is removed, the conveying efficiency is not significantly reduced)

Referring to fig. 5, the first inclined surface 151 and the second inclined surface 152 are parts of conical surfaces, and the included angle formed by the intersection edge of the first inclined surface 151 and the second inclined surface 152 and a plane passing through the axis is α smaller than 90 degrees, which is 60 degrees in the example, so that the groove I15 is deeper and narrower, the material throwing phenomenon of the bar stock during rolling can be well limited, and when the value of α is 55-65 degrees, the material throwing phenomenon can be well limited.

As shown in FIG. 4, a pressure plate I12 is further arranged above the roller 11, and the pressure plate I12 is used for further limiting the material throwing phenomenon of the bar. The pressure plate I12 is provided with a round hole, the hanging plate I16 is also provided with a round hole, and the pressure plate I12 is fastened on the hanging plate I16 through bolts and nuts. The material pressing plate I12 with different lengths can be manufactured for bars with different diameters, so that the lower end face of the material pressing plate I12 has different upper and lower heights. Or round holes in the pressure plate I12 or the hanger plate I16 are replaced by waist round holes, so that the upper position and the lower position of the pressure plate I12 can be adjusted, and the pressure plate I12 is suitable for bars with different diameters. Certainly, the pressure flitch I12 that the length is different to the bar of different diameters is the better scheme, because be the round hole on this moment pressure flitch I12 and the hanger plate I16, even the bar strikes pressure flitch I12, also can not make the upper and lower position change of pressure flitch I12 (if replace the round hole on the pressure flitch I12 with waist round hole, because the bar strikes and to make pressure flitch I12 shift up).

Of course, in other technical solutions, the pressure plate i 12 may also be fixedly (i.e., inseparably) disposed above the roller 11. This is suitable for processing only one diameter gauge of bar stock.

The pressure plate I12 extends into the groove I15 to improve the limiting effect on the bar stock. And the minimum distance between the lower end face of the pressure plate I12 and the upper surface of the bar is 3-5 mm, and a gap is reserved, so that the bar can easily enter the groove I15 and can smoothly move forwards.

The minimum distances c and d between the pressure plate I12 and the first inclined surface 151 and the second inclined surface 152 are smaller than the diameter of the bar stock, so that the bar stock cannot fall out of a space defined by the lower end surface of the pressure plate I12, the first inclined surface 151 and the second inclined surface 152, and the effect of limiting the bar stock to be thrown when the bar stock rotates is better.

One side of the bottom end of the pressure plate I12 facing the feeding direction can be further provided with a chamfer (not provided in the embodiment) so as to better guide the bar stock into the pressure plate.

As shown in fig. 6, the rollers 11 are detachably provided. The roller 11 can be separated into a first portion 111 and a second portion 112 along a plane passing through the axial line thereof, i.e., the roller 11 can be separated into left and right portions, i.e., the first portion 111 and the second portion 112, along the dotted line in fig. 6.

Referring to fig. 5 and 6, the roller 11 has a connection portion 13 extending outward in the axial direction, and the connection portion 13 is integrally provided with the roller 11. The connection portion 13 may be separated into a leg connection portion i 131 and a leg connection portion ii 132 along with the first portion 111 and the second portion 112. A threaded hole 1311 and a smooth hole 1321 are formed in the through connection 13. Threaded hole 1311 and smooth hole 1321 interface and communicate. Threaded hole 1311 is located in leg connection i 131 and smooth hole 1321 is located in leg connection ii 132. The smooth bore 1321 has an inner diameter that is slightly larger than the inner diameter of the threaded bore 1311. The first and second parts 111 and 112 are connected to form an integral roller 11 by inserting a bolt through the smooth hole 1321 and screwing it into the threaded hole 1311 for fastening.

The roller 11 is designed to be detachable, and the main function is to rapidly replace the roller 11 without detaching other parts such as a chain wheel and the like when the roller 11 is damaged or worn.

The leg connector II 132 further has a planar section 1322, the smooth hole 1321 opens into the planar section 1322, and the planar section 1322 facilitates the bolt connection between the smooth hole 1321 and the threaded hole 1311.

As shown in fig. 7 in conjunction with fig. 3, the centering assembly 20 is disposed between adjacent heating coil mechanisms 31. The core fixing assembly 20 includes a base 22 and a slider 21 fixed to the base 22.

The slide block 21 is actually formed by splicing two flat plates which are mirror images. A groove II 25 is formed above the sliding block 21. The groove ii 25 has a third slope 251 and a fourth slope 252 formed on the surface of the slider 21. The horizontal distance between the third slope 251 and the fourth slope 252 shows a decreasing tendency from the top to the bottom. The third slope 251 and the fourth slope 252 can guide the bar stock to the bottom of the groove II 25 and clamp the bar stock, and the bar stock is simultaneously contacted with the third slope 251 and the fourth slope 252, so that the bar stock can be limited from being thrown when the bar stock is rolled.

As shown in fig. 8 and 9 in conjunction with fig. 7, the base 22 has a mounting edge 221, and the slider 21 rides on the mounting edge 221.

The slider 21 is formed with a first folded edge 211 and a second folded edge 212 by bending the front and rear sides in the bar conveying direction. The first flange 211 and the second flange 212 hold the front and rear sides of the bar stock conveying direction to which the flange 221 is attached. The main function of the first folding edge 211 and the second folding edge 212 is to limit the movement of the slide block 21 in the bar conveying direction, so that the bar cannot move the slide block 21 when sliding on the surface of the slide block 21.

A contact edge 213 is connected between the first folding edge 211 and the second folding edge 212, the contact edge 213 is overlapped on the top surface of the mounting edge 221, the surface of the contact edge 213 is contacted with the bar, and actually, the third inclined surface 251 and the fourth inclined surface 252 are positioned on the surface of the contact edge 213.

The slide block 21 is provided with a chamfer 214 facing one side of the incoming material direction and close to the groove II 25, and the chamfer 214 is beneficial to smooth guiding of the bar stock into the groove II 25.

The slide 21 is made of hot work die steel, which has a good red hardness, i.e. after heating up, it still has a good hardness. As the bar stock is heated to 900-1000 ℃ in the heating coil mechanism 31, the high-temperature bar stock is contacted with the slide block 21, and the slide block 21 is heated by the bar stock. The sliding block 21 of the embodiment is made of 4Cr5MoSiV1 hot work die steel, the heat treatment hardness is HRC 46-50, the material has good red hardness, the hardness is not easy to reduce in a high-temperature state, and the wear resistance is improved.

The mounting edge 221 of the base 22 is configured according to the shape of the slider 21, and when the slider 21 (formed by joining two mirror-symmetrical blocks) slides down naturally on the mounting edge 221, the lower edges of the contact edges 213 of the two sliders contact and abut against each other. The upper end of the slider 21 is restricted by the cover plate 24, and the cover plate 24 almost contacts the upper end of the slider 21 to restrict the moving distance of the slider 21. The cover plate 24 is mounted with the base 22. The slide 21 is a wearing part, and the slide 21 can be quickly replaced by detaching the cover plate 24.

As shown in fig. 7, the fixed core assembly 20 further includes a nip plate ii 23 disposed above the slide 21. The pressure plate II 23 is detachably connected to the hanging plate II 26, the hanging plate II 26 is welded on the cover plate 24, and two ends of the cover plate 24 are fixed on the base 22 through bolts.

The pressure plate II 23 is provided with a round hole, the hanging plate II 26 is also provided with a round hole, and the pressure plate II 23 is fastened on the hanging plate II 26 through bolts and nuts. The material pressing plate II 23 with different lengths can be manufactured for bars with different diameters, so that the lower end face of the material pressing plate II 23 has different upper and lower heights. Or, round holes in the material pressing plate II 23 or the hanging plate II 26 are replaced by waist round holes, so that the vertical position of the material pressing plate II 23 can be adjusted, and the material pressing plate II is suitable for bars with different diameters. Certainly, it is more excellent scheme to make the pressure flitch II 23 that differs in length to the bar of different diameters, because be the round hole on this moment pressure flitch II 23 and the hanger plate II 26, even the bar strikes pressure flitch II 23, also can not make the upper and lower position change of pressure flitch II 23 (if replace the round hole on the pressure flitch II 23 with waist round hole, because the bar strikes and to make pressure flitch II 23 shift up).

Of course, in other technical solutions, the pressure plate ii 23 may also be fixedly (i.e., inseparably) disposed above the slider 21. This is suitable for processing only one diameter gauge of bar stock.

The function of the pressure plate II 23 is similar to that of the pressure plate I12. The material pressing plate II 23 is used for further limiting the material throwing phenomenon of the bar stock. The material pressing plate II 23 extends into the groove II 25 so as to improve the limiting effect on the bar stock. And the minimum distance between the lower end face of the material pressing plate II 23 and the upper surface of the bar is 3-5 mm, and a gap is reserved, so that the bar can easily enter the groove II 25 and can smoothly move forwards.

The minimum distances a and b between the material pressing plate II 23 and the third inclined surface 251 and the fourth inclined surface 252 are smaller than the outer diameter of the bar stock, so that the bar stock cannot fall out of a space defined by the lower end surface of the material pressing plate II 23, the third inclined surface 251 and the fourth inclined surface 252, and the material throwing function during bar stock rolling rotation is well limited.

The lower end of the material pressing plate II 23 facing the feeding direction can be further provided with a chamfer (not provided in the embodiment) so as to better guide the bar stock into the feeding direction.

The third inclined surface 251 and the fourth inclined surface 252 are both flat surfaces, and an included angle β between the third inclined surface 251 and the fourth inclined surface 252 is smaller than 90 degrees, and preferably can be 55-65 degrees, in this case, 60 degrees.

In other technical solutions, the third inclined surface 251 and the fourth inclined surface 252 are not limited to be a plane, but may also be arc-shaped surfaces, so that the third inclined surface 251 or the fourth inclined surface 252 may be in point contact rather than line contact with the bar stock, which further reduces damping of the bar stock by the third inclined surface 251 and the fourth inclined surface 252, and allows the bar stock to be transported more smoothly.

In this example, the structure of the roller 11 is modified so that the feed roller between the heating coil mechanisms 31 is replaced with the slider 21 (see fig. 1 and 2), and in another embodiment, only the feed roller between the heating coil mechanisms 31 may be replaced with the slider 21, and the feed roller 1 shown in fig. 1 and 2 may be used for the roller 11.

In this example, since the feed roller between the heating coil mechanisms 31 is replaced with the slider 21, the slider 21 has a smaller volume than the feed roller, and the gap distance between the adjacent heating coil mechanisms 31 can be further reduced to be within 150mm, and in this example, the gap distance between the adjacent heating coil mechanisms 31 is 130 mm. On one hand, the core fixing component 20 plays a role in supporting the bars, and prevents the longer bars from being bent; on the other hand, the base 22 and the slide 21 in the centering assembly 20 can be made shorter (in the bar conveying direction) (compare fig. 1), so that the gap distance between adjacent heating coil mechanisms 31 can be reduced. Reducing the gap distance between adjacent heating coil mechanisms 31 can reduce heat loss as the billet moves between the heating coil mechanisms 31. The centering assembly 20 of the present example can reduce the gap distance between the adjacent heating coil mechanisms 31 to within 150mm, or even within 130mm, and can reduce heat loss to improve the heating efficiency of the heating coil mechanisms 31.

The feeding and core fixing device for the steel ball mill production line has the working principle that:

the feeding roller assembly 10 heats the bar stock placed in the groove I15 (shown in figure 4) through the rotating roller 11 and enters a steel ball rolling mill (not shown in figure) after being heated by the heating coil mechanism 31 (shown in figure 3), the first inclined surface 151 and the second inclined surface 152 of the groove I15 are simultaneously contacted with the bar stock, so that the conveying friction force is increased, the material throwing phenomenon of the bar stock during rolling rotation can be limited through clamping, and the material throwing phenomenon of the bar stock can be further limited through the material pressing plate I12; the fixed core assembly 20 (shown in figure 3) arranged between the heating coil mechanisms 31 supports the bar stock through the slide block 21 (shown in figure 7) and the groove II 25 and is combined with the material pressing plate II 23 to limit the material throwing phenomenon of the bar stock.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, so as not to limit the protection scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims (10)

1. A pay-off core fixing device for steel ball mill production line, its characterized in that, it includes:

a medium frequency furnace assembly (30), the medium frequency furnace assembly (30) comprising at least one heating coil mechanism (31);

the feeding roller component (10) is arranged at the input end and/or the output end of the intermediate frequency heating furnace component (30), the feeding roller component (10) comprises a rotatable roller (11), and a circle of groove I (15) for bearing a bar is arranged on the peripheral surface of the roller (11);

a centering assembly (20), said centering assembly (20) being disposed between adjacent said heating coil mechanisms (31), said centering assembly (20) comprising a slider (21) and a groove II (25) disposed above said slider (21), said groove II (25) having a third slope (251) and a fourth slope (252) formed on a surface of said slider (21), said bar being in simultaneous contact with said third slope (251) and said fourth slope (252) when placed in said groove II (25).

2. The feeding and core-fixing device for the steel ball mill production line according to claim 1, characterized in that: the core fixing assembly (20) further comprises a base (22), the base (22) is provided with a mounting edge (221), the sliding block (21) is overlapped on the mounting edge (221), and the sliding block (21) is bent at the front side edge and the rear side edge of the bar conveying direction and clamps the mounting edge (221).

3. The feeding and core-fixing device for the steel ball mill production line according to claim 2, characterized in that: the core fixing assembly (20) further comprises a cover plate (24), and the cover plate (24) is arranged above the groove II (25) and limits the upper end of the sliding block (21).

4. The feeding and core-fixing device for the steel ball mill production line according to claim 1, characterized in that: the fixed core assembly (20) further comprises a pressure plate II (23) arranged above the sliding block (21).

5. The feeding and centering device for a steel ball mill production line according to claim 1, wherein an included angle β between the third inclined surface (251) and the fourth inclined surface (252) is less than 90 °.

6. The feeding and core-fixing device for the steel ball mill production line according to claim 1, characterized in that: the gap distance between the adjacent heating coil mechanisms (31) is less than 150 mm.

7. The feeding and core-fixing device for the steel ball mill production line according to claim 1, characterized in that: the groove I (15) has a first inclined surface (151) and a second inclined surface (152), and the bar stock is simultaneously in contact with the first inclined surface (151) and the second inclined surface (152) when the bar stock is placed in the groove I (15).

8. The feeding and core-fixing device for the steel ball mill production line according to claim 7, characterized in that the first inclined plane (151) and the second inclined plane (152) respectively form an included angle α smaller than 90 degrees with the intersecting edges of the planes passing through the axis.

9. The feeding and core-fixing device for the steel ball mill production line according to claim 7, characterized in that: the feeding roller wheel assembly (10) further comprises a material pressing plate I (12) arranged above the roller wheel (11).

10. The feeding and core-fixing device for the steel ball mill production line according to claim 1, characterized in that: the roller (11) is separable into a first portion (111) and a second portion (112) along a plane passing through its axial center line.

Images