Material turnover device of steel pipe cold-rolling mill and two-roller steel pipe cold-rolling mill

Abstract

The utility model provides a material turnover device of a steel pipe cold-rolling mill. The material turnover device comprises a first rotating cylinder, a supporting sleeve and a guide sleeve, the first rotating cylinder is provided with an accommodating hole penetrating in the axial direction; the supporting sleeve is fixed to the end of the first rotating cylinder, a groove is formed in the supporting sleeve, the groove is sleeved with the containing hole, and a through hole is formed in the bottom of the groove; the guide sleeve is detachably fixed in the groove and provided with a rectangular hole penetrating in the axial direction of the first rotating cylinder, and the rectangular hole communicates with the penetrating hole. The utility model further provides a two-roller steel pipe cold-rolling mill which comprises the steel pipe cold-rolling mill material turnover device, a first roller, a second roller and a second rotating cylinder. The first rotating cylinder and the second rotating cylinder are oppositely arranged in the axial direction, and the first roller and the second roller are oppositely arranged between the first rotating cylinder and the second rotating cylinder and located on the two sides of the axial extending direction respectively. According to the two-roller steel pipe cold rolling mill, 180-degree overturning of round-to-rectangular materials can be achieved, and then continuous production can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of steel tube cold rolling mills, in particular to a material turning device of a steel tube cold rolling mill and a two-roller steel tube cold rolling mill. Background Art

[0002] At present, the two-roll steel tube cold rolling mill in the prior art, since the clamping rotating devices at the exit and entrance of the conventional cold rolling mill are designed for clamping round bars, when rolling solid round bars, it is possible to roll large round bars into small round bars. However, if the round bars are rolled into rectangular bars, they need to be flipped 180 degrees each time they are rolled, and the entrance clamping rotating device and the exit clamping rotating device need to rotate synchronously and clamp the material. However, the exit clamping rotating device of the existing two-roll steel tube cold rolling mill cannot be used because it is only suitable for clamping round materials, so the work of rolling round bars into rectangular bars cannot be carried out continuously. Utility Model Content

[0003] Based on this, the steel tube cold rolling mill material turning device of the utility model can realize the turning of rectangular bars with a simple structure, and is suitable for the outlet of the cold rolling mill when round bars are rolled into rectangular bars, so that the production of rolling round bars into rectangular bars can be carried out continuously.

[0004] Part I:

[0005] A material turning device for a steel tube cold rolling mill comprises a first rotating cylinder, a supporting sleeve and a guide sleeve; the first rotating cylinder is provided with a receiving hole which penetrates along the axial direction; the supporting sleeve is fixed to the end of the first rotating cylinder, the supporting sleeve is provided with a groove, the groove is sleeved in the receiving hole, a through hole is provided at the bottom of the groove; the guide sleeve is detachably fixed in the groove, the guide sleeve is provided with a rectangular hole which penetrates along the axial direction of the first rotating cylinder, and the rectangular hole is connected with the through hole.

[0006] The utility model installs a supporting sleeve on the first rotating cylinder, and installs a guide sleeve in the supporting sleeve. By arranging a rectangular hole in the guide sleeve, the material turning device of the steel tube cold rolling mill is transformed from a conventional round bar clamping device to a rectangular bar clamping device. When the turning device is arranged at the outlet of the cold rolling mill, the 180-degree turning work of rolling the round bar into the rectangular bar can be realized, so that the production can be carried out continuously. The detachable fixation of the guide sleeve facilitates the installation and disassembly of the guide sleeve, and facilitates the replacement of different guide sleeves to adapt to rectangular cross-section bars of different sizes.

[0007] As a preferred solution, a first fixing member is further included, and the support sleeve is also provided with a fixing hole, and the first fixing member passes through the fixing hole to fix the support sleeve to the end of the first rotating cylinder. The support sleeve is fixed to the end of the first rotating cylinder by the first fixing member, which facilitates the installation and removal of the support sleeve; in the embodiment of the utility model, the first fixing member is a bolt.

[0008] As a preferred solution, a connecting block is further included. The outer surface of the side wall of the guide sleeve is provided with a receiving groove. The connecting block is installed in the receiving groove and abuts against the inner wall of the support sleeve. The connecting block not only has a connecting function, but also plays a positioning role when the device is turned over.

[0009] As a preferred solution, it further includes a fixing cover and a second fixing member, wherein the fixing cover includes a fixing portion, which is annular and covers the top of the support sleeve and the guide sleeve, and is connected to the support sleeve through the second fixing member. The fixing portion of the fixing cover can further fix the guide sleeve to prevent the guide sleeve from sliding out of the groove of the support sleeve; in the embodiment of the utility model, the second fixing member is a bolt.

[0010] As a preferred solution, the fixed cover further comprises a bell mouth, which extends in a bell shape from the inner side of the fixed portion toward the outer direction of the first rotating cylinder. The bell mouth plays a guiding role, guiding the rectangular material into the rectangular hole of the guide sleeve.

[0011] As a preferred solution, a guide groove is provided on one side of the guide sleeve facing the bell mouth, and the guide groove is connected to the rectangular hole. The guide groove plays a guiding role, guiding the rectangular material into the rectangular hole of the guide sleeve.

[0012] As a preferred solution, the area of ​​the through hole is larger than that of the rectangular hole, and the through hole completely covers the rectangular hole. The above arrangement of the through hole and the rectangular hole, on the one hand, enables the output of the steel pipe rolling to proceed smoothly, and on the other hand, makes it easy for the guide sleeve to be detached from the support sleeve by force from the other side.

[0013] Part II:

[0014] A two-roller steel tube cold rolling mill comprises a first turning device, a first rolling roller, a second rolling roller and a second turning device; the first turning device is the steel tube cold rolling mill material turning device described in the first part, the second turning device comprises a second rotating cylinder, the first rotating cylinder is coaxial with the second rotating cylinder and is axially oppositely arranged, and a circular clamping hole is provided in the second rotating cylinder; the first turning device is provided with one end of the supporting sleeve facing the second turning device; the first rolling roller and the second rolling roller are relatively arranged between the first turning device and the second turning device, and are respectively located on both sides of the axial extension direction.

[0015] The utility model discloses a two-roller steel tube cold rolling mill, wherein a conventional material turning device with a circular clamping hole and a material turning device of the utility model for a steel tube cold rolling mill with a rectangular hole are respectively arranged at both ends of the two rollers of the cold rolling mill, so that the 180-degree turning can be smoothly carried out during the cold rolling process of converting round bars into rectangular bars, thereby enabling continuous production.

[0016] As a preferred solution, the second rotating cylinder is provided with a second accommodating hole penetrating in the axial direction, and a clamping member is provided in the second accommodating hole, and the clamping member forms the clamping hole. The clamping hole is formed by the clamping member, and the size of the clamping hole and the clamping force can be controlled, and can adapt to circular cross-section bars of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of a two-roller steel tube cold rolling mill;

[0018] Figure 2 A schematic diagram of a round-to-rectangular bar during the rolling process of a two-roller steel tube cold rolling mill;

[0019] Figure 3 This is a schematic diagram of the installation of a support sleeve, a fixed cover, and a guide sleeve of a material turning device of a steel tube cold rolling mill;

[0020] Figure 4 A schematic diagram of a guide sleeve of a material turning device of a steel tube cold rolling mill;

[0021] Among them: 1-first rotating cylinder, 1.1-first accommodating hole, 2.-support sleeve, 2.1-fixing hole, 2.2-groove, 2.2.1-through hole, 3-connecting block, 4-fixing cover, 4.1-fixing part, 4.2-bell mouth, 5-guide sleeve, 5.1-guide groove, 5.2-rectangular hole, 5.3-accommodating groove, 6-first rolling roller, 7-second rolling roller, 8-bar, 8.1-circular section, 8.2-circular to rectangular rolling transition section, 8.3-rectangular section, 9-second rotating cylinder, 9.1-second accommodating hole, 9.2-clamping piece, 9.3-clamping hole. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0023] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0024] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0025] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0026] Example 1

[0027] Reference Figure 1 , 3 4. A material turning device for a steel tube cold rolling mill comprises a first rotating cylinder 1, a supporting sleeve 2, a connecting block 3, a fixing cover 4 and a guide sleeve 5.

[0028] The first rotating cylinder 1 is provided with a first receiving hole 1.1 penetrating in the axial direction. The support sleeve 2 is provided with a fixing hole 2.1, which is fixed to the end of the first rotating cylinder 1 by bolts passing through the fixing hole 2.1, so as to facilitate the installation and removal of the support sleeve 2; the support sleeve 2 is also provided with a groove 2.2, which is sleeved in the first receiving hole 1.1, and a through hole 2.2.1 is provided at the bottom of the groove 2.2, and a guide sleeve 5 is detachably connected in the groove 2.1.

[0029] The outer surface of the side wall of the guide sleeve 5 is provided with a receiving groove 5.3, and the connecting block 3 is installed in the receiving groove 5.3 and abuts against the inner wall of the support sleeve 2; the connecting block 3 not only has a connecting function, but also plays a positioning role when the device is flipped. The guide sleeve 5 is provided with a rectangular hole 5.2 that penetrates along the axial direction of the first rotating cylinder 1. The rectangular hole 5.2 is connected with the through hole 2.2.1. The area of ​​the through hole 2.2.1 is larger than the area of ​​the rectangular hole 5.2, and the through hole 2.2.1 completely covers the rectangular hole 5.2. The setting of the rectangular hole 5.2 and the through hole 2.2.1 allows the output of the steel pipe rolling to proceed smoothly on the one hand, and on the other hand, it makes it easy for the guide sleeve 5 to be detached from the support sleeve 2 from the other side. The guide sleeve 5 is also provided with a guide groove 5.1 on the side facing the outside of the first rotating cylinder 1. The guide groove 5.1 plays a guiding role, guiding the rectangular material into the rectangular hole 5.2 of the guide sleeve 5.

[0030] The fixed cover 4 includes a fixed portion 4.1 and a bell mouth 4.2. The fixed portion 4.1 is annular and covers the top of the support sleeve 2 and the guide sleeve 5, and is connected to the support sleeve 2 by bolts; the bell mouth 4.2 is fixed to the inner side of the fixed portion 4.1 and extends in a bell shape from the inner side of the fixed portion 4.1 in a direction away from the first rotating cylinder 1. The fixed portion 4.1 of the fixed cover 4 can further fix the guide sleeve 5 to prevent the guide sleeve 5 from sliding out of the groove 2.2 of the support sleeve 2, and the bell mouth 4.2 plays a guiding role to guide the rectangular material into the rectangular hole 5.2 of the guide sleeve 5.

[0031] The utility model installs a support sleeve 2 on the first rotating cylinder 1, and installs a guide sleeve 5 in the support sleeve 2. By arranging a rectangular hole 5.2 in the guide sleeve 5, the material turning device of the steel tube cold rolling mill is transformed from conventional round bar clamping to rectangular bar clamping. When the turning device is arranged at the outlet of the cold rolling mill, the 180-degree turning work of rolling the round bar into the rectangular bar can be realized, so that the production can be carried out continuously.

[0032] Example 2

[0033] Reference Figure 1 A two-roller steel tube cold rolling mill comprises a first turning device, a first rolling roller 6, a second rolling roller 7 and a second turning device. The first turning device is the material turning device of the steel tube cold rolling mill in Example 1, and the second turning device comprises a second rotating cylinder 9. The first rotating cylinder 1 is coaxial with the second rotating cylinder 9 and is axially opposite to each other. One end of a support sleeve 2 is provided in the first turning device and faces the second turning device. A second accommodating hole 9.1 is provided in the second rotating cylinder 9 and runs through the axial direction. A clamping member 9.2 is provided in the second accommodating hole 9.1, and a circular clamping hole 9.3 is formed by the clamping member 9.2. The size and clamping force of the clamping hole 9.3 can be controlled, and the circular cross-section bars of different sizes can be adapted.

[0034] The axis of rotation of the first rotating drum 1 and the second rotating drum 9 is the rolling center line, which passes through the first accommodating hole 1.1, the second accommodating hole 9.1, the clamping hole 9.3, the rectangular hole 5.2 and the through hole 2.2.1. The first roller 6 and the second roller 7 are arranged between the first rotating drum 1 and the second rotating drum 9, respectively, and are arranged opposite to each other on both sides of the rolling center line and are perpendicular to the rolling center line.

[0035] The two-roller steel tube cold rolling mill of the utility model is provided with a conventional material turning device with circular clamping holes and the material turning device of the steel tube cold rolling mill of embodiment 1 at both ends of the two rollers of the cold rolling mill, so that the 180-degree turning can be carried out smoothly during the cold rolling process of converting round bars into rectangular bars, thereby enabling continuous production.

[0036] Example 3

[0037] Reference Figure 1-2 , the method of using the two-roll steel tube cold rolling mill of Example 2.

[0038] When the round bar is rolled into a rectangular bar, the round bar is first conveyed to the first roller 6 and the second roller 7 along the rolling center line through the clamping hole of the second rotating cylinder 9, and the rolled bar is formed after rolling. The rolled bar includes a rectangular bar segment at the front end, which is conveyed to the first rotating cylinder 1 and enters the rectangular hole 5.2 in the guide sleeve 5 under the guidance of the bell mouth 4.2 and the guide groove 5.1; at this time, the first rotating cylinder 1 and the second rotating cylinder 9 rotate simultaneously, the first rotating cylinder 1 drives the support sleeve 2, and then drives the guide sleeve 5 to rotate, and the second rotating cylinder 9 drives the clamping piece 9.2 to rotate, so that the round material is rolled into the rectangular material and rotates at the same time, ensuring the continuous rolling work. In this process, the bar 8 is continuously conveyed by the second rotating cylinder 9 to the first roller 6 and the second roller 7, and the bar 8 is gradually rolled from the round segment 8.1 into the round-to-rectangular rolling transition segment 8.2 and the rectangular segment 8.3, and finally introduced into the first rotating cylinder 1.

[0039] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. For ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. A material turning device for a steel tube cold rolling mill, characterized in that: It includes a first rotating cylinder, a supporting sleeve and a guide sleeve; the first rotating cylinder is provided with a receiving hole which penetrates along the axial direction; the supporting sleeve is fixed to the end of the first rotating cylinder, the supporting sleeve is provided with a groove, the groove is sleeved in the receiving hole, and a through hole is provided at the bottom of the groove; the guide sleeve is detachably fixed in the groove, the guide sleeve is provided with a rectangular hole which penetrates along the axial direction of the first rotating cylinder, and the rectangular hole is connected with the through hole.

2. A material turning device for a steel tube cold rolling mill according to claim 1, characterized in that: It also includes a first fixing member, and the support sleeve is also provided with a fixing hole. The first fixing member passes through the fixing hole to fix the support sleeve to the end of the first rotating cylinder.

3. A material turning device for a steel tube cold rolling mill according to claim 1, characterized in that: It also includes a connecting block. The outer surface of the side wall of the guide sleeve is provided with a receiving groove. The connecting block is installed in the receiving groove and abuts against the inner wall of the support sleeve.

4. A material turning device for a steel tube cold rolling mill according to claim 1, characterized in that: It also includes a fixing cover and a second fixing piece. The fixing cover includes a fixing portion. The fixing portion is annular and covers the top of the supporting sleeve and the guide sleeve, and is connected to the supporting sleeve through the second fixing piece.

5. A material turning device for a steel tube cold rolling mill according to claim 4, characterized in that: The fixed cover further includes a bell mouth, and the bell mouth extends in a bell shape from the inner side of the fixed portion toward the outer side of the first rotating cylinder.

6. A material turning device for a steel tube cold rolling mill according to claim 5, characterized in that: A guide groove is provided on one side of the guide sleeve facing the bell mouth, and the guide groove is communicated with the rectangular hole.

7. A material turning device for a steel tube cold rolling mill according to claim 1, characterized in that: The area of ​​the through hole is larger than that of the rectangular hole, and the through hole completely covers the rectangular hole.

8. A two-roller steel tube cold rolling mill, characterized in that: It includes a first turning device, a first rolling roller, a second rolling roller and a second turning device; the first turning device is the steel tube cold rolling mill material turning device according to any one of claims 1 to 7, the second turning device includes a second rotating cylinder, the first rotating cylinder is coaxial with the second rotating cylinder and is axially oppositely arranged, and a circular clamping hole is provided in the second rotating cylinder; the first turning device is provided with one end of the supporting sleeve facing the second turning device; the first rolling roller and the second rolling roller are relatively arranged between the first turning device and the second turning device, and are respectively located on both sides of the axial extension direction.

9. A two-roller steel tube cold rolling mill according to claim 8, characterized in that: The second rotating cylinder is provided with a second accommodating hole penetrating along the axial direction, and a clamping piece is provided in the second accommodating hole, and the clamping piece forms the clamping hole.

Images