Y-shaped cold rolling mill

Abstract

The invention relates to the technical field of reinforcing steel bar cold rolling, in particular to a Y-shaped cold rolling mill which comprises a machine body and three roller assemblies distributed in the circumferential direction, each roller assembly comprises a mounting base, a roller base and a screw-down mechanism, a rotating shaft is arranged on each mounting base, each roller base is arranged on each mounting base and can rotate around the corresponding rotating shaft, and a roller assembly is arranged on each roller base and can rotate around the corresponding rotating shaft; the roller assemblies are in transmission fit with the rotating shaft, cold rolling gaps are formed among the rollers of the three roller assemblies, the screw-down mechanism drives the roller base to rotate around the rotating shaft for adjustment, and therefore the size of the cold rolling gaps can be adjusted, and the roller shaft and the rotating shaft are in stable transmission fit all the time in the rotating process of the roller base. The three roller assemblies are the first roller assembly and the two second roller assemblies respectively, a rotating shaft of the first roller assembly is in transmission fit with rotating shafts of the two second roller assemblies, the roller assemblies of the three roller assemblies can be driven to rotate by driving the rotating shaft of the first roller assembly, and Y-shaped cold rolling of steel bars is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of steel bar cold rolling, and in particular to a Y-type cold rolling mill. Background Art

[0002] "GB13788-2024 Cold-rolled ribbed steel bars" has made major adjustments to the CRB550 brand of steel bars, changing the two-sided ribs to three-sided ribs, and the cross-section of the steel bars into a Y-shape. The technical indicators such as mechanical properties, process performance, and external dimensions have also been significantly improved. It is stipulated that it will be enforced from September 25, 2023.

[0003] The cold rolling processing of three-sided ribbed steel bars requires a Y-type cold rolling mill, also known as a three-rib cold rolling mill. During the cold rolling process, it is necessary to adjust the opening size between the rollers, and the transmission relationship needs to be maintained while adjusting the opening size. The existing three-rib rolling mill adopts a method in which the power shaft and the roller shaft are matched through a gear transmission with longer teeth. On the premise of maintaining the transmission relationship between the two gears, the roller shaft is moved closer to or away from the power shaft to adjust the position of the roller, and then the size of the opening is adjusted. The disadvantages of this method are: 1. The range of opening adjustment is limited. If the opening is too large, the roller shaft and the power shaft will be too far apart, and the two gears will be disengaged, so that the transmission cannot be achieved; 2. When the opening is adjusted to a certain extent, the transmission connection effect between the roller shaft and the power shaft becomes worse, not stable enough, and it is easy to cause gear damage; 3. In order to ensure that the opening can meet the requirements of the adjustment range, the gears, the power shaft and the power equipment connected to the power shaft are all large, resulting in a larger installation space for the entire equipment. In order to solve the above problems, the present invention provides a Y-type cold rolling mill. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a Y-type cold rolling mill, which can drive the roller assembly to rotate around the rotating axis by using a pressing mechanism, so as to adjust the size of the cold rolling gap between each roller, and during the adjustment process, a stable transmission relationship can be maintained between the roller assembly and the rotating axis.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a Y-type cold rolling mill, including a machine body and three roller assemblies, the roller assembly including a mounting seat, a roller seat and a pressing mechanism, the mounting seat is arranged on the machine body and a rotating shaft is arranged on the mounting seat, the roller seat is arranged on the mounting seat and can rotate around the rotating shaft, the pressing mechanism is arranged on the machine body and drives the roller seat to rotate and adjust around the rotating shaft, a roller assembly is arranged on the roller seat, the roller assembly is matched with the rotating shaft, the three roller assemblies are distributed along the circumferential direction and a cold rolling gap is formed between the rollers of the three roller assemblies, and a cold rolling channel is arranged on the machine body corresponding to the cold rolling gap. The rotating shaft serves as the power transmission shaft of the roll assembly, the roll seat can rotate around the rotating shaft, the roll assembly is arranged on the roll seat and cooperates with the rotating shaft for transmission, the rotating shaft can drive the roll assembly to rotate, and the cold rolling gap can be adjusted by rotating the roll seat around the rotating shaft, and during the rotation of the roll seat, the roll assembly and the rotating shaft always maintain a stable transmission relationship. The Y-type cold rolling mill of the present invention can adjust the cold rolling gap within a larger range, and stable transmission can be achieved between the roll assembly and the rotating shaft while adjusting the cold rolling gap.

[0006] As an optional solution, the roller assembly includes a roller and a roller shaft. The roller shaft is rotatably arranged on the roller seat. The roller shaft is parallel to the rotating shaft and is in transmission cooperation with the rotating shaft. The roller is connected to the roller shaft.

[0007] As an optional solution, the roller shaft and the rotating shaft are matched through gear transmission.

[0008] As an optional solution, the pressing mechanism is a turbine screw drive assembly or a telescopic drive assembly, the pressing mechanism and the roller assembly are respectively on both sides of the rotating shaft, and the action part of the pressing mechanism is in contact with the roller seat.

[0009] As an optional solution, the action part of the pressing mechanism is provided with a fine-tuning nut, and the fine-tuning nut is in contact with the roller seat. By adjusting the fine-tuning nut, the matching effect of the pressing mechanism and the roller seat can be adjusted, and the accuracy of the pressing mechanism in adjusting the roller position can be improved.

[0010] As an optional solution, the three roller assemblies are respectively a first roller assembly and two second roller assemblies, the rotating shaft of the first roller assembly is provided with a power receiving part, and the rotating shafts of the two second roller assemblies are in transmission cooperation with the rotating shaft of the first roller assembly. The rotating shafts of the two second roller assemblies are in transmission cooperation with the rotating shaft of the first roller assembly to improve the stability of the transmission.

[0011] As an optional solution, the rotating shaft of the second roller assembly is matched with the rotating shaft of the first roller assembly through a bevel gear transmission.

[0012] As an optional solution, a driving mechanism is also included, and the power receiving part is connected to the power output part of the driving mechanism.

[0013] As an optional solution, the power output part of the driving mechanism is connected to the transmission shaft through a coupling, the transmission shaft is connected to the rotating shaft of the first roller assembly through the coupling, and the power receiving part is the coupling.

[0014] As an optional solution, a guide tube is provided on the machine body at a position corresponding to the cold rolling gap, and a cold rolling channel is provided in the guide tube.

[0015] Compared with the prior art, the present invention has the following beneficial effects: the rotating shaft is the power shaft of the rolling mill assembly, and when the cold rolling gap is adjusted by the pressing mechanism, the pressing mechanism drives the rolling mill seat to rotate around the rotating shaft, and drives the rolling mill assembly to rotate around the rotating shaft. Compared with the connection method of the prior art, the adjustable range of the cold rolling gap is effectively improved, and since the rolling mill seat and the rolling mill assembly rotate around the rotating shaft, a stable transmission relationship can be maintained between the rolling mill assembly and the rotating shaft during the rotation process, thereby avoiding the connection effect of each component being affected by the adjustment of the cold rolling gap; in addition, since the rotating shaft does not undergo radial displacement when the cold rolling gap is adjusted, the driving mechanism can also use ordinary driving components, thereby reducing the volume of the overall equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a structural schematic diagram of a Y-type cold rolling mill; Figure 2 It is a front schematic diagram of a Y-type cold rolling mill; Figure 3 This is a structural schematic diagram of a Y-type cold rolling mill with the drive mechanism omitted; Figure 4 It is a structural schematic diagram of the roller assembly; In the figure: 1. machine body, 2. first roller assembly, 21. roller seat, 22. pressing mechanism, 23. rotating shaft, 24. roller shaft, 25. roller, 3. second roller assembly, 4. driving mechanism. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example

[0019] See also Figure 1-Figure 4 A Y-type cold rolling mill includes a machine body 1 and three roller assemblies. The roller assembly is arranged on the machine body 1. The three roller assemblies are distributed along the circumferential direction. A cold rolling gap is formed between the rollers 25 of the three roller assemblies. A guide tube is arranged on the machine body 1 corresponding to the cold rolling gap. A cold rolling channel is arranged in the guide tube. The cold rolling channel is communicated with the cold rolling gap.

[0020] The roller assembly includes a mounting seat, a roller seat 21 and a pressing mechanism 22. The mounting seat is arranged on the machine body 1. A rotating shaft 23 is arranged on the mounting seat. The rotating shaft 23 is connected to the mounting seat through a bearing member, and the rotating shaft 23 can rotate relative to the mounting seat. The roller seat 21 is arranged on the mounting seat. The roller seat 21 is connected to the mounting seat or the rotating shaft 23 through a bearing member. The roller seat 21 can rotate around the rotating shaft 23. The pressing mechanism 22 is arranged on the machine body 1. The action part of the pressing mechanism 22 cooperates with the roller seat 21. The pressing mechanism 22 can drive the roller seat 21 to rotate and adjust around the rotating shaft 23. A roller assembly is arranged on the roller seat 21, and the roller assembly includes a roller 25 and a roller shaft 24. The roller shaft 24 is connected to the roller seat 21 through a bearing. The roller shaft 24 can rotate relative to the roller seat 21. The roller shaft 24 is in transmission cooperation with the rotating shaft 23. Driving the rotating shaft 23 to rotate can drive the roller shaft 24 to rotate, and then drive the roller 25 arranged on the roller shaft 24 to rotate.

[0021] When the roll seat 21 is rotated and adjusted around the rotating axis 23, it can drive the roll assembly to move around the rotating axis 23, thereby realizing the adjustment of the distance between the three rolls 25, that is, the cold rolling gap. During the rotation of the roll seat 21 around the rotating axis 23, the roll shaft 24 and the rotating axis 23 always maintain a transmission relationship.

[0022] In the Y-type cold rolling mill of the present invention, the roll shaft 24 of the roll assembly is matched with the rotating shaft 23 for transmission, and the size of the cold rolling gap is adjusted by rotating the roll seat 21 around the rotating shaft 23. Not only can the size of the cold rolling gap be adjusted over a larger range, but also the stable transmission connection effect between the roll shaft 24 and the rotating shaft 23 can be maintained during the cold rolling gap adjustment process, thereby improving the stability of the device. Moreover, since the rotating shaft 23 does not undergo radial displacement during the adjustment of the cold rolling gap, the dynamic drive mechanism 4 of the cold rolling mill does not need to deal with the displacement of the rotating shaft 23, and general power components such as motors can be used, thereby reducing the overall size of the device.

[0023] The mounting seat is preferably a U-shaped seat, the rotating shaft 23 is arranged through the U-shaped cavity of the mounting seat, the roller seat 21 is arranged in the U-shaped cavity of the mounting seat and is connected to the rotating shaft 23 through a bearing member; a roller groove is arranged on the roller seat 21, the roller shaft 24 passes through the roller groove and is parallel to the rotating shaft 23, the roller is arranged in the roller groove, the roller is connected to the roller shaft 24 and the roller extends out of the roller groove.

[0024] The roller shaft 24 and the rotating shaft 23 can be matched by gear transmission. When the roller seat 21 rotates around the rotating shaft 23, the roller shaft 24 also rotates relative to the rotating shaft 23. The gear on the roller shaft 24 rotates around the rotating shaft 23 and meshes with the gear on the rotating shaft 23.

[0025] The pressing mechanism 22 can be a turbine screw drive assembly or a telescopic drive assembly. The pressing mechanism 22 and the roller assembly are respectively located on both sides of the rotating shaft 23. The action part of the pressing mechanism 22 contacts and cooperates with the roller seat 21. When the pressing action is performed, the action part of the pressing mechanism 22 supports the roller seat 21 to make the roller seat 21 rotate around the rotating shaft 23, so that the rollers are close to each other. Figure 1-Figure 3 When the action part of each pressing mechanism 22 is close to the machine body 1, each roller seat 21 flips around the rotating axis 23 to make the cold rolling gap in the largest state. When the steel bar passes through the cold rolling gap and the cold rolling channel, the action part of each pressing mechanism 22 moves toward the roller seat 21 and drives the roller seat 21 to rotate around the rotating axis 23. The rollers approach each other and make the cold rolling gap smaller. The rollers rotate in coordination to realize the cold rolling of the steel bar.

[0026] In a further embodiment, the action part of the pressing mechanism 22 is provided with a fine-tuning nut. For example, when the pressing mechanism 22 is a worm screw drive assembly, the end of the screw is provided with a fine-tuning nut. When the pressing mechanism 22 is a telescopic drive assembly, the telescopic part of the telescopic drive assembly is provided with a fine-tuning nut. The pressing mechanism 22 is in contact with the roller seat 21 through the fine-tuning nut. Rotating the fine-tuning nut can adjust the action position of the action part of the pressing mechanism 22, which is conducive to improving the adjustment accuracy of the pressing mechanism 22 on the roller seat 21 and the roller.

[0027] The three roller assemblies are respectively a first roller assembly 2 and two second roller assemblies 3, and the rotating shafts 23 of the two second roller assemblies 3 are both matched with the rotating shaft 23 of the first roller assembly 2. Preferably, the rotating shaft 23 of the second roller assembly 3 is matched with the rotating shaft 23 of the first roller assembly 2 through a bevel gear transmission. The driving mechanism 4 of the Y-type cold rolling mill can directly drive the rotating shaft 23 of the first roller assembly 2, and drive the rotating shafts 23 of the two second roller assemblies 3 to rotate through the rotating shaft 23 of the first roller assembly 2, thereby driving the three rollers to rotate at the same time.

[0028] The rotating shaft 23 of the first roll assembly 2 is provided with a power receiving part suitable for connecting and cooperating with the driving mechanism 4. As a specific example, the power receiving part is a coupling, and the power output part of the driving mechanism 4 of the Y-type cold rolling mill is connected to a transmission shaft through the coupling, and the transmission shaft is connected to the rotating shaft 23 of the first roll assembly 2 through the coupling.

[0029] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0030] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A Y-type cold rolling mill, characterized in that: The invention comprises a machine body (1) and three roller assemblies, wherein the roller assembly comprises a mounting seat, a roller seat (21) and a pressing mechanism (22), wherein the mounting seat () is arranged on the machine body (1) and a rotating shaft (23) is arranged on the mounting seat (), the roller seat (21) is arranged on the mounting seat () and can rotate around the rotating shaft (23), the pressing mechanism (22) is arranged on the machine body (1) and drives the roller seat (21) to rotate and adjust around the rotating shaft (23), the roller seat (21) is arranged with a roller assembly, the roller assembly and the rotating shaft (23) are in driving cooperation, the three roller assemblies are distributed along the circumferential direction and a cold rolling gap is formed between the rollers of the three roller assemblies, and a cold rolling channel is arranged on the machine body (1) at a position corresponding to the cold rolling gap.

2. A Y-type cold rolling mill according to claim 1, characterized in that: The roller assembly comprises a roller (25) and a roller shaft (24); the roller shaft (24) is rotatably disposed on a roller seat (21); the roller shaft (24) is parallel to the rotating shaft and is in transmission cooperation with the rotating shaft; the roller (25) is connected to the roller shaft (24).

3. A Y-type cold rolling mill according to claim 2, characterized in that: The roller shaft (24) and the rotating shaft (23) are matched with each other through gear transmission.

4. A Y-type cold rolling mill according to claim 2, characterized in that: The pressing mechanism (22) is a turbine screw drive assembly or a telescopic drive assembly. The pressing mechanism (22) and the roller assembly are respectively located on both sides of the rotating shaft (23). The action part of the pressing mechanism (22) is in contact with the roller seat (21).

5. A Y-type cold rolling mill according to claim 4, characterized in that: The action part of the pressing mechanism (22) is provided with a fine-adjusting nut, and the fine-adjusting nut is in abutment with the roller seat (21).

6. A Y-type cold rolling mill according to claim 4, characterized in that: The three roller assemblies are respectively a first roller assembly (2) and two second roller assemblies (3); the rotating shaft (23) of the first roller assembly (2) is provided with a power receiving part, and the rotating shafts (23) of the two second roller assemblies (3) are in transmission cooperation with the rotating shaft (23) of the first roller assembly (2).

7. A Y-type cold rolling mill according to claim 6, characterized in that: The rotating shaft (23) of the second roller assembly (3) is matched with the rotating shaft (23) of the first roller assembly (2) through bevel gear transmission.

8. A Y-type cold rolling mill according to claim 7, characterized in that: It also includes a driving mechanism (4), wherein the power receiving part is connected to the power output part of the driving mechanism (4).

9. A Y-type cold rolling mill according to claim 8, characterized in that: The power output part of the driving mechanism (4) is connected to a transmission shaft via a coupling, the transmission shaft is connected to a rotating shaft (23) of the first roller assembly (2) via the coupling, and the power receiving part is the coupling.

10. A Y-type cold rolling mill according to claim 1, characterized in that: A guide tube is provided on the machine body (1) at a position corresponding to the cold rolling gap, and a cold rolling channel is provided in the guide tube.

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