Guide device for a bacterial punch

Abstract

The application relates to a guide plate device of a piercing mill, which is used for the piercing of a pipe. The two guide plate devices are respectively in abutting cooperation with the two sides of the pipe. The guide plate device comprises a guide plate seat and a guide plate body. The guide plate body is arranged on one side of the guide plate seat. The guide plate body is provided with a first guide groove and a second guide groove. The first guide groove and the second guide groove are communicated. The groove bodies of the first guide groove and the second guide groove are used for supporting the deformation of the pipe. The cross sections of the first guide groove and the second guide groove are both arc-shaped. The radius size of the cross section of the first guide groove linearly decreases from the side close to the guide plate body to the side far from the guide plate body. The radius size of the cross section of the second guide groove linearly decreases from the side close to the guide plate body to the side far from the guide plate body. The linear decrease trend of the radius size of the second guide groove is greater than that of the first guide groove. The application has the effect of reducing the piercing accidents of the pipe, such as flag cutting, chain cutting and back sticking.

Description

Technical Field

[0001] This application relates to the field of pipe processing, and in particular to a guide plate device for a fungal perforation machine. Background Technology

[0002] The piercing mill for hot-rolled seamless steel pipes has a history of over a hundred years. As early as 1886, the Mannesmann brothers of Germany invented the two-spoke skew rolling horizontal piercing mill (referred to as the Mannesmann piercing mill), and in 1899, the Swiss Stiefel invented the mushroom-type piercing mill. Due to the poor rigidity of the cantilever structure of the old-style mushroom-type piercing mill, it was not widely used. However, theoretical research and production practice have proven that when the diameter of the rolled rough pipe is required to be larger than the diameter of the billet (i.e., expansion piercing), the mushroom-type piercing mill is the best choice.

[0003] In the field of steel rolling technology, the angle between the projections of the centerlines of two rolling mills and the rolling centerline is usually called the feed angle β. If the two rolling mills not only have a feed angle ±β with the rolling centerline, but also an angle ±γ between the horizontal projections of the centerlines of the two rolling mills and the rolling centerline, called the rolling angle, and the surface of the rolling mill is conical, then it is called a mushroom-type rolling mill, and the piercing mill composed of this type is called a mushroom-type piercing mill. The method of producing rolled tubes by the piercing mill is as follows: the hot tube blank to be rolled is fed into two rolling mills rotating in the same direction. Under the positioning action of the mandrel equipped with a mandrel, the tube blank is pierced and rolled into a hollow tube and then rolled forward in a spiral with the mandrel as the center until the tube rolling is completed. The mandrel and mandrel are then removed, ready to roll the next tube blank.

[0004] Existing piercing mills are generally equipped with active large guide plates. When rolling ultra-thin-walled tubes, piercing thinner-walled tubes has become the norm. However, the piercing configuration of the active large guide plate can no longer meet the requirements for supporting the lateral deformation of thinner-walled tubes. In particular, at the exit end where the steel is thrown and the tube is rounded back, the control of lateral deformation is practically non-existent. This can lead to rolling accidents such as flag cutting, chain cutting, and back jamming of the pierced tubes, which seriously affect the operating rate and yield of the entire production line. Summary of the Invention

[0005] To reduce rolling accidents such as flag cutting, chain cutting, and back jamming in perforated pipes, this application provides a guide plate device for a fungal perforation mill.

[0006] The guide plate device for a fungal perforation machine provided in this application adopts the following technical solution: A guide plate device for a fungal perforation machine, wherein when the perforation machine perforates a pipe, the two guide plate devices respectively abut against both sides of the pipe. The guide plate device includes a guide plate seat and a guide plate body, wherein the guide plate body is disposed on one side of the guide plate seat. The guide plate body has a first guide groove and a second guide groove, which are connected. Both the groove body of the first guide groove and the groove body of the second guide groove are used to support the deformation of the pipe. The cross-section of the first guide groove and the cross-section of the second guide groove are both arc-shaped. The radius of the cross-section of the first guide groove decreases linearly from the side closer to the guide plate body to the side farther away from the guide plate body. The radius of the cross-section of the second guide groove decreases linearly from the other side closer to the guide plate body to the other side farther away from the guide plate body. Moreover, the linear decreasing trend of the radius of the second guide groove is greater than that of the first guide groove.

[0007] Optionally, the guide plate seat is provided with a locking assembly, which includes a locking block. The locking block is rotatably connected to the guide plate seat, and the locking block and the side of the guide plate seat facing each other form a locking groove. When the guide plate body and the guide plate seat are connected, the guide plate body passes through the groove of the locking groove and is abutted and fixed at both ends of the groove. When the locking block rotates toward the guide plate seat, the locking groove is unlocked, and the two ends of the locking groove are released from their abutment and fixed to the guide plate body.

[0008] Optionally, both ends of the locking groove are wedge-shaped, and both ends of the guide plate are wedge-shaped.

[0009] Optionally, the locking assembly further includes a locking cylinder, which is fixedly mounted on the guide plate seat and used to drive the locking block to rotate.

[0010] Optionally, the piston rod of the locking cylinder has a through locking hole, and the locking assembly also includes a locking rod, which is connected to the locking block and passes through the locking hole. The diameter of the locking hole is larger than the diameter of the locking rod.

[0011] Optionally, the locking assembly further includes a guide block, which is fixedly mounted on the guide plate seat and has a through guide hole. The piston rod of the locking cylinder passes through and slides into the guide hole.

[0012] Optionally, the locking assembly further includes a heat shield, which is fixedly connected to the guide plate seat and is used to protect the cylinder body of the locking cylinder.

[0013] Optionally, the guide plate seat includes a base portion and a connecting portion, wherein the connecting portion is fixedly connected to the base portion and connected to the guide plate body.

[0014] Optionally, the connecting part is provided with a connecting groove, the groove has a triangular cross-section, and when the connecting part is connected to the guide plate body, the guide plate body passes through the connecting groove and abuts against the groove.

[0015] In summary, this application includes at least one of the following beneficial technical effects: When the perforating machine pierces large-diameter thin-walled pipes, the guide plate seat is connected to the perforating machine so that the guide plate device is installed on the perforating machine. The two guide plates respectively abut and guide the two sides of the pipe, so that the guide plate body provides stable support for the pipe. Because the cross-sections of the first guide groove and the second guide groove are both arc-shaped, the radius of the first guide groove decreases linearly from the side closer to the guide plate body to the side farther away from the guide plate body, and the radius of the second guide groove decreases linearly from the other side closer to the guide plate body to the other side farther away from the guide plate body. Moreover, the linear decreasing trend of the radius of the second guide groove is greater than that of the first guide groove, so that the first guide groove... The linear change in the cross-section of the first guide groove and the radius of the second guide groove corresponds to the roll profile curve and the mandrel curve, thereby enabling the guide plate to fully support the lateral deformation of the tube from the second bite to the complete deformation zone of the steel throwing and rounding. This significantly improves the piercing deformation stability of large-diameter ultra-thin-walled tubes. When rolling ultra-thin-walled tubes, piercing thinner-walled tubes has become the norm, but the piercing configuration of the active large guide plate can no longer meet the requirements for lateral deformation support of thinner-walled tubes. In particular, at the steel throwing and rounding position at the exit end, the control of lateral deformation is practically non-existent, which can lead to rolling accidents such as flag cutting, chain cutting, and back jamming of the pierced tubes, seriously affecting the operating rate and yield of the entire production line. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application; Figure 2 This is a schematic diagram of the guide plate structure according to an embodiment of this application; Figure 3 This is a schematic diagram of the guide plate seat structure according to an embodiment of this application; Figure 4 This is a schematic diagram of the seat structure according to an embodiment of this application; Figure 5 This is a schematic diagram of the connection structure in an embodiment of this application; Figure 6 This is a schematic diagram of the locking block structure according to an embodiment of this application; Figure 7 This is a schematic diagram of the locking cylinder structure according to an embodiment of this application; Figure 8 This is a schematic diagram of the guide block structure in an embodiment of this application.

[0017] Explanation of reference numerals in the attached drawings: 1. Guide plate seat; 11. Seat body; 111. Main body; 112. Mounting body; 1121. Hollowed-out groove; 12. Connecting part; 121. Connecting groove; 2. Guide plate body; 21. First guide groove; 22. Second guide groove; 3. Locking assembly; 31. Locking block; 311. Locking groove; 32. Locking cylinder; 321. Locking hole; 33. Locking rod; 34. Guide block; 35. Heat insulation cover. Detailed Implementation

[0018] The following is in conjunction with the appendix Figure 1-8 This application will be described in further detail.

[0019] This application discloses a guide plate device for a fungal perforation machine. When the perforation machine perforates a pipe, two guide plates respectively abut against both sides of the pipe, as shown in the attached diagram. Figure 1 A guide plate device for a fungal perforation machine includes a guide plate seat 1, a guide plate body 2, and a locking assembly 3. The guide plate body 2 is connected to the guide plate seat 1, and the cross-section of the guide plate body 2 is rectangular. The locking assembly 3 is disposed on the guide plate seat 1. The guide plate body 2 is used to provide stable support for the pipe, and the locking assembly 3 is used to make the guide plate body 2 and the guide plate seat 1 stably connected.

[0020] Reference Figure 2 In this embodiment, the guide plate body 2 is provided with a first guide groove 21 and a second guide groove 22, which are connected. Both the groove of the first guide groove 21 and the groove of the second guide groove 22 are used to support the deformation of the pipe. The cross-section of the first guide groove 21 and the cross-section of the second guide groove 22 are both arc-shaped. The radius of the cross-section of the first guide groove 21 decreases linearly from the side closer to the guide plate body 2 to the side farther away from the guide plate body 2. The radius of the cross-section of the second guide groove 22 decreases linearly from the other side closer to the guide plate body 2 to the other side farther away from the guide plate body 2. The linear decreasing trend of the radius of the second guide groove 22 is greater than that of the first guide groove 21. The linear changing trends of the radius of the first guide groove 21 and the radius of the second guide groove 22 correspond to the roller curve and the mandrel curve.

[0021] Reference Figure 3 and Figure 4 In this embodiment, the guide plate seat 1 includes a seat body 11 and a connecting part 12. The connecting part 12 is fixedly connected to the seat body 11 by multiple bolts, and then the connecting part 12 and the seat body 11 are further fixed by welding. The seat body 11 includes a main body 111 and a mounting body 112. The main body 111 and the mounting body 112 are fixedly connected. The mounting body 112 is hexagonal prism and has multiple through-hole slots 1121. Multiple reinforcing ribs are fixedly provided between the main body 111 and the mounting body 112 to make the structure of the seat body 11 more stable.

[0022] Reference Figure 5 In this embodiment of the application, the connecting part 12 is provided with a connecting groove 121. The groove of the connecting groove 121 has a triangular cross-section. When the connecting part 12 is connected to the guide plate body 2, the guide plate body 2 passes through the connecting groove 121 and abuts against the groove of the connecting groove 121, so that the abutment area between the guide plate body 2 and the connecting groove 121 is larger, and the connecting groove 121 limits the movement of the guide plate body 2 in the width direction.

[0023] Reference Figure 6 In this embodiment, the locking assembly 3 includes a locking block 31, which is rotatably connected to the guide plate seat 1. The locking block 31 and the guide plate seat 1 form a locking groove 311 on the opposite side. Both ends of the groove of the locking groove 311 are wedge-shaped. Both ends of the guide plate body 2 are wedge-shaped in the length direction. When the guide plate body 2 and the guide plate seat 1 are connected, the guide plate body 2 passes through the groove of the locking groove 311 and is abutted and fixed at both ends of the groove of the locking groove 311. When the locking block 31 rotates toward the guide plate seat 1, the locking groove 311 is unlocked, and the two ends of the groove of the locking groove 311 are released from their abutment and fixation with the guide plate body 2. Thus, when the guide plate body 2 needs to be replaced to process pipes of different diameters, the locking assembly 3 is unlocked, which can realize the quick replacement of the guide plate body 2.

[0024] Reference Figure 7 In this embodiment, the locking assembly 3 further includes a locking cylinder 32 and a locking rod 33. The cylinder body of the locking cylinder 32 is fixedly mounted on the guide plate seat 1. The piston rod of the locking cylinder 32 has a through-hole 321. The locking rod 33 is connected to the locking block 31 and passes through the locking hole 321. The diameter of the locking hole 321 is larger than the diameter of the locking rod 33, so that when the locking cylinder 32 is driven, the piston rod of the locking cylinder 32 pushes the locking block 31 to rotate away from the guide plate seat 1, thereby locking the guide plate body 2 with the locking groove 311. The diameter of the locking hole 321 is larger than the diameter of the locking rod 33, so that the change in the position of the locking rod 33 in the locking hole 321 can offset the change in the projected size of the locking block 31 along the length direction of the guide plate body 2 when the locking block 31 rotates, so that the locking cylinder 32 can stably drive the locking block 31 to rotate.

[0025] Reference Figure 1 and Figure 8In this embodiment, the locking assembly 3 further includes a guide block 34 and a heat insulation cover 35. The guide block 34 is fixedly disposed on the guide plate seat 1, and the guide block 34 has a through guide hole. The piston rod of the locking cylinder 32 passes through and slides into the guide hole. The heat insulation cover 35 is fixedly connected to the guide plate seat 1 and is used to protect the cylinder body of the locking cylinder 32. The heat insulation cover 35 can be lined with heat insulation cotton, thereby reducing the impact of heat radiation on the locking cylinder 32 when the high-temperature pipe is pierced, ensuring the life of the seal at the end of the locking cylinder 32, and improving the locking stability of the locking cylinder 32.

[0026] The implementation principle of the guide plate device of the fungal perforation machine in this application embodiment is as follows: When the fungal perforation machine perforates a large-diameter thin-walled pipe, the guide plate seat 1 is connected to the perforation machine so that the guide plate device is installed on the perforation machine. The two guide plate devices respectively abut and guide the two sides of the pipe so that the guide plate body 2 provides stable support for the pipe. Since the cross-section of the first guide groove 21 and the cross-section of the second guide groove 22 are both arc-shaped, the radius of the cross-section of the first guide groove 21 decreases linearly from the side closer to the guide plate body 2 to the side farther away from the guide plate body 2, and the radius of the cross-section of the second guide groove 22 decreases linearly from the other side closer to the guide plate body 2 to the other side farther away from the guide plate body 2, and the linear decreasing trend of the radius of the second guide groove 22 is greater than that of the first guide groove 21. The linear reduction in radius dimension ensures that the radii of the cross-sections of the first guide groove 21 and the second guide groove 22 change linearly to correspond to the roll profile curve and the mandrel curve. This allows the guide plate 2 to provide full lateral deformation support for the tube from the secondary bite to the complete deformation zone of the rounding and rounding process. This significantly improves the piercing deformation stability of large-diameter ultra-thin-walled tubes. It also addresses the issue that when rolling ultra-thin-walled tubes, piercing thinner-walled tubes is common, but the piercing configuration of the active large guide plate is no longer sufficient to support the lateral deformation of thinner-walled tubes. In particular, at the exit end where the rounding and rounding are located, the control of lateral deformation is virtually non-existent, which can lead to rolling accidents such as flag cutting, chain cutting, and back jamming in the pierced tubes. This seriously affects the operating rate and yield of the entire production line.

[0027] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A guide plate device for a fungal perforation machine, characterized in that: When the piercing machine pierces the pipe, the two guide plate devices abut against both sides of the pipe respectively. The guide plate device includes a guide plate seat and a guide plate body, and the guide plate body is disposed on one side of the guide plate seat. The guide plate body has a first guide groove and a second guide groove, which are connected. Both the groove body of the first guide groove and the groove body of the second guide groove are used to support the deformation of the pipe. The cross-section of the first guide groove and the cross-section of the second guide groove are both arc-shaped. The radius of the cross-section of the first guide groove decreases linearly from the side closer to the guide plate body to the side farther away from the guide plate body. The radius of the cross-section of the second guide groove decreases linearly from the other side closer to the guide plate body to the other side farther away from the guide plate body. Moreover, the linear decreasing trend of the radius of the second guide groove is greater than that of the first guide groove.

2. The guide plate device for a fungal perforation machine according to claim 1, characterized in that: The guide plate seat is provided with a locking assembly, which includes a locking block. The locking block is rotatably connected to the guide plate seat, and the locking block and the side of the guide plate seat facing each other form a locking groove. When the guide plate body and the guide plate seat are connected, the guide plate body passes through the groove of the locking groove and is abutted and fixed at both ends of the groove. When the locking block rotates toward the guide plate seat, the locking groove is unlocked, and the two ends of the locking groove are released from their abutment and fixed to the guide plate body.

3. The guide plate device for a fungal perforation machine according to claim 2, characterized in that: Both ends of the locking groove are wedge-shaped, and both ends of the guide plate are wedge-shaped.

4. The guide plate device for a fungal perforation machine according to claim 2, characterized in that: The locking assembly also includes a locking cylinder, which is fixedly mounted on the guide plate seat and used to drive the locking block to rotate.

5. The guide plate device for a fungal perforation machine according to claim 4, characterized in that: The piston rod of the locking cylinder has a through locking hole. The locking assembly also includes a locking rod, which is connected to the locking block and passes through the locking hole. The diameter of the locking hole is larger than the diameter of the locking rod.

6. The guide plate device for a fungal perforation machine according to claim 4, characterized in that: The locking assembly also includes a guide block, which is fixedly mounted on the guide plate seat and has a through guide hole. The piston rod of the locking cylinder passes through and slides into the guide hole.

7. The guide plate device for a fungal perforation machine according to claim 4, characterized in that: The locking assembly also includes a heat insulation cover, which is fixedly connected to the guide plate seat and is used to protect the cylinder body of the locking cylinder.

8. The guide plate device for a fungal perforation machine according to claim 1, characterized in that: The guide plate seat includes a base part and a connecting part, the connecting part is fixedly connected to the base part, and the connecting part is connected to the guide plate body.

9. The guide plate device for a fungal perforation machine according to claim 8, characterized in that: The connecting part has a connecting groove with a triangular cross-section. When the connecting part is connected to the guide plate body, the guide plate body passes through the connecting groove and abuts against the groove body.

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