CN217990567U - Roller on rolling die - Google Patents

Abstract

The utility model provides an upper roller of a rolling mould, which selects a right circular angle position of a rim molding section as a parting surface position to split the rolling mould into a split structure; the rolling die comprises a short shoulder forming ring, a short shoulder tire seat angle forming roller, a groove bottom forming roller, a long shoulder tire seat angle forming roller and a long shoulder wheel rim forming roller which are sequentially overlapped together, and a through hole is formed in the axial direction of the rolling die. The utility model discloses can arouse the mode that the roller became invalid fast to rim material strength upgrading, in the position that became invalid most easily, design components of a whole that can function independently structure reduces roller material cost, man-hour of processing, satisfies cost and required quality.

Description

Roller on rolling die

Technical Field

The utility model relates to a wheel processing field especially relates to an roller on roll type mould.

Background

The material strength of the tubeless steel wheel rim of the commercial vehicle is continuously upgraded, and the tensile strength is upgraded from 380CL, 420CL, 540CL and 590CL to 650CL. Along with the upgrading of material strength, the abrasion damage effect of the rim material on the surface of the roller formed by rotary pressing is more and more obvious during the roll forming. The service life of the roller is less than 5 thousands of rim materials with low strength, the service life of the roller is 25 thousands of rim materials with more than 540CL, and the cost of the die is increased by 5 times.

The upper roller of the rolling die is divided into two structures, one structure is an integral structure, and the roller needs to be integrally replaced after being partially worn or broken, so that the cost is high; one type of the three-split structure is a structure with three split parts, damaged split parts can be replaced after a roller is partially worn or broken, but the cost is still high, the position where the roller is most prone to failure after the strength of a rim material is upgraded is not fully considered in the three-split structure, and the three-split structure is still in a failure structural design.

There is a need for a rolling die which can prolong the service life of the roller and reduce the use cost of the roller.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve above-mentioned problem, provided and reduced inefficacy phenomenon, improved roller die life-span on roller die. In order to achieve the above purpose, the utility model adopts the following specific technical scheme:

the upper roller of the rolling mould selects a right circular angle position of a rim molding section as a parting surface position, so that the upper roller of the rolling mould is split into a split structure;

the upper roller of the rolling mould comprises a short shoulder forming ring, a short shoulder tyre seat angle forming roller, a groove bottom forming roller, a long shoulder tyre seat angle forming roller and a long shoulder wheel flange forming roller which are sequentially overlapped together, and a through hole is axially formed in the upper roller of the rolling mould.

Further, the groove bottom forming roller is of a revolving body structure with two thin axial ends and a thick middle part, so that a first convex spigot and a second convex spigot are respectively formed at the two axial ends of the groove bottom forming roller;

the short shoulder tire seat angle forming roller is provided with a first concave spigot, and the first concave spigot is matched with the first convex spigot;

the long shoulder tire seat angle forming roller is provided with a second concave spigot, and the second concave spigot is matched with the second convex spigot.

The long shoulder tire seat angle forming roller is of a revolving body structure with two thin axial ends and a thick middle part, so that a first convex spigot and a second convex spigot are respectively formed at two axial ends of the long shoulder tire seat angle forming roller;

the groove bottom forming roller is provided with a first concave spigot, and the first concave spigot is matched with the first convex spigot;

the long shoulder wheel rim forming roller is provided with a second concave spigot which is matched with the second convex spigot.

Further, the diameters of the first male end and the second male end are different.

Furthermore, the profile of the short shoulder forming ring is a cylindrical surface, and the profile of the long shoulder rim forming roller is a cylindrical surface.

Furthermore, the upper roller of the rolling mould also comprises a short shoulder pressing plate and a long shoulder pressing plate which are all circular, and the short shoulder forming ring, the short shoulder tyre seat angle forming roller, the groove bottom forming roller, the long shoulder tyre seat angle forming roller and the long shoulder rim forming roller are arranged between the short shoulder pressing plate and the long shoulder pressing plate;

the short shoulder pressing plate and the long shoulder pressing plate clamp the short shoulder forming ring, the short shoulder tire seat angle forming roller, the groove bottom forming roller, the long shoulder tire seat angle forming roller and the long shoulder rim forming roller.

Further, the short shoulder forming ring is detachably connected with the short shoulder tire seat angle forming roller; the short shoulder tire seat angle forming roller is detachably connected with the groove bottom forming roller, and the groove bottom forming roller is detachably connected with the long shoulder tire seat angle forming roller; the long shoulder tire seat angle forming roller and the long shoulder rim forming roller are detachably connected.

The utility model discloses can gain following technological effect:

the utility model discloses changed traditional 3 components of a whole that can function independently roller structural design, aroused the mode that the roller became invalid fast to rim material strength upgrading, at the position that became invalid most easily, design components of a whole that can function independently structure reduces roller material cost, man-hour of processing, cost and requirements for quality. The design of the most vulnerable wheel rim forming roller is changed, the service life of the roller is prolonged by 3 times, and the cost is reduced by 5 times.

Drawings

Fig. 1 is a schematic structural view of a rim forming section disclosed by the present invention;

fig. 2 is a schematic structural view of an upper roller of the roll forming die disclosed by the utility model;

fig. 3 is a schematic structural view of the tank bottom forming roller disclosed by the utility model;

fig. 4 is a side view schematic structure of the tank bottom forming roller disclosed by the utility model.

Reference numerals:

the short shoulder forming ring 1, the short shoulder tire seat angle forming roller 2, the first concave spigot 21, the groove bottom forming roller 3, the first convex spigot 31, the second convex spigot 32, the long shoulder tire seat angle forming roller 4, the second concave spigot 41, the long shoulder rim forming roller 5, the short shoulder pressing plate 6 and the long shoulder pressing plate 7.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not constitute limitations on the invention.

Fig. 1 shows the structure of the rim forming section, and as shown in fig. 1, the positive R fillet of the rim forming section is formed by rolling down, so that the upper roller is designed to be a 5-split structure, the positive R fillet of the upper roller can be reasonably avoided, the positive R position is selected, and the position of the parting surface of the split roller does not influence the forming quality of a product. The round corner with the positive R is characterized in that the circle center of the round corner is located outside the rim, namely the round corner protrudes outwards to form the positive R, and the round corner is concaved inwards to form the negative R. According to the process design of one-time rolling, the roller is designed into a 5-split structure. The structure of the roller on the rolling mould shown in fig. 2 comprises 5 split rollers to achieve the working effect of the whole roller, and comprises a short shoulder rim forming roller 1, a short shoulder tire seat angle forming roller 2, a groove bottom forming roller 3, a long shoulder tire seat angle forming roller 4 and a long shoulder rim forming roller 5 which are sequentially stacked together. Each split roller is provided with a through hole in the axial direction, so that the split rollers can be conveniently assembled on the main shaft like a 3-split roller structure.

Fig. 3 shows the structure of the groove bottom forming roller, as shown in fig. 3, the groove bottom forming roller 3 is a solid of revolution structure with thin axial ends and thick middle, so that a first male end 31 and a second male end 32 are respectively formed at the axial ends of the groove bottom forming roller 3; namely, two axial end surfaces of the groove bottom forming roller 3 are respectively provided with a section of circular ring in a protruding way, so that the short shoulder tire seat angle forming roller 2 and the long shoulder tire seat angle forming roller 4 are conveniently buckled on the groove bottom forming roller 3, and the positioning among the three parts is realized.

Correspondingly, as shown in fig. 2 and 4, the short shoulder tire seating angle forming roller 2 is provided with a first female seam allowance 21, and the first female seam allowance 21 is matched with a first male seam allowance 31. The axial end surface of the short shoulder tire seat angle forming roller 2 can be deducted by a cylinder with the same thickness and diameter as the first male end 31.

Correspondingly, as shown in fig. 2, the long shoulder rim forming roll 4 is provided with a second female seam allowance 41, and the second female seam allowance 41 is matched with the second male seam allowance 32. The axial end surface of the long shoulder tire seat angle forming roller 4 can be deducted by a cylinder with the same thickness and diameter as the second female spigot 32.

The three split rollers in the middle can be mutually matched and positioned by utilizing the rabbets, and the end surfaces of the short shoulder rim forming roller 1, the short shoulder tire seat angle forming roller 2, the long shoulder tire seat angle forming roller 4 and the long shoulder rim forming roller 5, which are contacted with each other, are smooth and can be directly assembled on a main shaft of equipment without rabbets.

The profile of the short shoulder forming ring 1 is a cylindrical surface, and the profile of the long shoulder rim forming roller 5 is a cylindrical surface. Since the two separate rolls are the most vulnerable and located on the outside of the rim, the profile has a geometry that is easy to machine, easy to replace and machine.

The two adjacent split rollers are detachably connected, so that the split roller which is easy to lose efficacy can be conveniently and independently replaced. The preferable 5 split rollers are fastened by screws, and the split rollers can be prevented from falling off when the rollers are lifted and installed.

The diameters of the first male seam allowance 31 and the second male seam allowance 32 are different, namely the error-proof size is designed through the different seam allowance diameter sizes, the left and right molded surfaces of the groove bottom forming roller 3 are not symmetrical structures, and the different left and right seam allowance diameters are designed to prevent the error assembly of the long shoulder tire seat angle forming roller and the short shoulder tire seat angle forming roller.

The short shoulder pressing plate 6 and the long shoulder pressing plate 7 are respectively pressed on the outermost sides and are also sleeved on the main shaft, so that the axial movement of the roller on the rolling die is prevented during working. When the split roller is used, the short shoulder pressing plate and the long shoulder pressing plate are pressed on the main shaft under the action of a locking ring of the main shaft and other positioning and locking devices, so that the short shoulder pressing plate and the long shoulder pressing plate are pressed on the split roller, and the split roller is prevented from axially moving under the action of a rolling force. The locking ring is equivalent to a screwed nut matched with the main shaft, and compresses the roller to prevent the roller from axially moving to influence the rolling stability of a workpiece. The structure of the main shaft and the lock ring can be referred to the prior art, in particular to the technical field of the installation of the roller of the split roller and the main shaft, and the detailed description is omitted here.

According to the actual failure mode of roller, the roller designs into 5 components of a whole that can function independently structures, but every structure all can be managed, quick replacement according to spare part, and it includes that short shoulder forming ring 1, short shoulder child seat angle shaping roll 2, tank bottom shaping roll 3, long shoulder child seat angle shaping roll 4 and long shoulder rim shaping roll 5. The groove bottom forming roller 3, the long shoulder tire seat angle forming roller 4 and the short shoulder tire seat angle forming roller 2 are connected in a matched mode through a spigot structure, and the long shoulder rim forming roller 5 and the short shoulder forming ring 1 are installed on the short shoulder tire seat angle forming roller 2 and the long shoulder tire seat angle forming roller 4 respectively. After the 5-split roller is adopted, the heat treatment hardenability of the split roller material is also obviously improved, and the service life of the roller is further prolonged.

The invention provides a structural design of a one-time rolling type 5-split roller, which is sorted according to the difficulty of failure positions of a roller, wherein the most failure positions are a short shoulder rim forming ring and a long shoulder rim forming ring, the second failure positions are a short shoulder tire seat angle forming ring and a long shoulder tire seat angle forming ring, and the least failure positions are groove bottom forming rings. The material cost of the short-shoulder rim forming ring and the long-shoulder rim forming ring accounts for about 20% of the whole roller, and after the roller fails, the split forming rings can be replaced, so that the economic benefit is obvious.

In the description of the present specification, reference to the description of "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

The above detailed description of the present invention does not limit the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the protection scope of the claims of the present invention.

Claims (6)

1. The upper roller of the rolling die is characterized in that the upper roller of the rolling die selects a right circular angle position of a rim molding section as a parting surface position, so that the upper roller of the rolling die is split into a split structure;

the roller forming die upper roller comprises a short shoulder forming ring (1), a short shoulder tire seat angle forming roller (2), a groove bottom forming roller (3), a long shoulder tire seat angle forming roller (4) and a long shoulder rim forming roller (5) which are sequentially overlapped, and a through hole is formed in the axial direction of the roller forming die upper roller.

2. The upper roll of the roll forming die as claimed in claim 1, wherein the groove bottom forming roll (3) is of a rotary body structure with two thin axial ends and a thick middle axial end, and a first male spigot (31) and a second male spigot (32) are respectively formed at the two axial ends of the groove bottom forming roll (3);

the short-shoulder tire seat angle forming roller (2) is provided with a first concave spigot (21), and the first concave spigot (21) is matched with the first convex spigot (31);

the long shoulder tire seat angle forming roller (4) is provided with a second concave spigot (41), and the second concave spigot (41) is matched with the second convex spigot (32).

3. An upper roll in a roll mould according to claim 2, characterised in that the first male tang (31) and the second male tang (32) are of different diameter.

4. An upper roll on a roll forming die according to claim 1, characterized in that the profile of the short shoulder forming ring (1) is a cylindrical surface and the profile of the long shoulder rim forming roll (5) is a cylindrical surface.

5. The upper roll of the roll forming die is characterized by further comprising a short shoulder pressing plate (6) and a long shoulder pressing plate (7) which are circular, wherein the short shoulder forming ring (1), the short shoulder tire seat angle forming roll (2), the groove bottom forming roll (3), the long shoulder tire seat angle forming roll (4) and the long shoulder rim forming roll (5) are arranged between the short shoulder pressing plate (6) and the long shoulder pressing plate (7);

short shoulder clamp plate (6) with long shoulder clamp plate (7) be used for with short shoulder shaping ring (1) short shoulder child sitting angle shaping is rolled (2) the tank bottom shaping is rolled (3) long shoulder child sitting angle shaping is rolled (4) and long shoulder rim shaping is rolled (5) and is pressed from both sides tightly.

6. An upper roll for a roll forming die according to claim 1, characterized in that the short shoulder forming ring (1) and the short shoulder tire seating angle forming roll (2) are detachably connected; the short shoulder tire seat angle forming roller (2) is detachably connected with the groove bottom forming roller (3), and the groove bottom forming roller (3) is detachably connected with the long shoulder tire seat angle forming roller (4); the long shoulder tire seat angle forming roller (4) is detachably connected with the long shoulder rim forming roller (5).

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