Ejector rod for hot-rolled steel pipe

Abstract

The utility model relates to the technical field of seamless steel pipe production, in particular to an ejector rod for a hot-rolled steel pipe, which not only can cool the ejector rod, but also can lubricate the ejector rod, reduces the abrasion of the ejector rod in the punching process, prolongs the service life of the ejector rod, and is convenient to use and high in practicability. Comprising an ejector rod; a cooling mechanism and a lubricating mechanism are arranged on the ejector rod, the cooling mechanism has a cooling function, and the lubricating mechanism has a lubricating function.

Description

Technical Field

[0001] This utility model relates to the technical field of seamless steel pipe production, and in particular to a top rod for hot-rolled steel pipes. Background Technology

[0002] In the production process of hot-rolled seamless steel pipes, a piercing rod on a piercing mill is used to pierce the hot-rolled and heated bar stock to form a seamless steel pipe. In the prior art, utility model patent application number 201621424953.1 discloses a piercing piercing rod to prevent wrinkling during piercing of steel pipes. It mainly consists of a piercing rod body and cooling water pipes. The end of the piercing rod body is equipped with a piercing head. When the piercing rod body pierces the bar stock, it is cooled by the cooling water pipes. However, the inventors believe that this method has the following problems in use: when the piercing rod pierces the bar stock, it is not only subjected to the high temperature of the bar stock, but also experiences significant friction between the piercing rod and the bar stock. The aforementioned prior art device can only cool the piercing rod and cannot lubricate the connection between the piercing rod and the bar stock, resulting in significant wear on the piercing rod during piercing and a short service life. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a top rod for hot-rolled steel pipes that can not only cool the top rod but also lubricate it, reducing wear on the top rod during the piercing process, extending its service life, and is easy to use and highly practical.

[0004] This utility model relates to a mandrel for hot-rolled steel pipes, comprising a mandrel; the mandrel is provided with a cooling mechanism and a lubrication mechanism, the cooling mechanism having a cooling function and the lubrication mechanism having a lubrication function; when the mandrel pierces a bar, the cooling mechanism on the mandrel cools the mandrel, while the lubrication mechanism lubricates the mandrel, thereby reducing wear on the mandrel during the piercing process and extending the service life of the mandrel, making it highly practical.

[0005] Preferably, the cooling mechanism includes a heat exchange channel, which is provided on the push rod. The heat exchange channel has an inlet and a outlet. When the heat exchange channel is perforated in the rod, external water is introduced into the heat exchange channel through the inlet. The water in the heat exchange channel then cools and dissipates heat from the push rod. The water is then discharged and collected through the outlet on the heat exchange channel. By cooling and dissipating heat from the heat exchange channel, the strength of the heat exchange channel is ensured, its normal use is guaranteed, and its reliability is high.

[0006] Preferably, the lubrication mechanism includes multiple oil drainage channels. Multiple oil drainage channels are provided on the push rod, and each channel extends through the push rod from front to back. Each of the multiple oil drainage channels has an oil drain hole at its output end. When the push rod pierces the rod, external lubricating oil is introduced into the multiple oil drainage channels. The lubricating oil then exits through the oil drain holes on the multiple channels onto the surface of the push rod. By attaching a layer of lubricating oil to the end of the push rod, the friction between the push rod and the rod is reduced, the wear of the push rod during the piercing process is decreased, and the service life of the push rod is ensured. This design is convenient to use and highly reliable.

[0007] Preferably, the push rod includes a rod body, a push head, and a connecting mechanism, with the rod body and the push head connected by the connecting mechanism. With the above configuration, when the push head experiences significant wear, the push head can be removed from the rod body and replaced with a new push head; there is no need to replace the entire push head, making it convenient to use.

[0008] Preferably, the connecting mechanism includes multiple mounting seats and multiple bolts. Multiple mounting seats are provided on the upper part of the rod body. The multiple mounting seats are all fixedly installed on the upper part of the rod body. The multiple mounting seats are evenly distributed around the upper circumference of the rod body. The multiple mounting seats are all fixedly installed on the lower end of the oil drain hole by multiple bolts. Through the above arrangement, the rod body and the top head are detachably connected, which facilitates the disassembly and replacement of the top head.

[0009] Preferably, the lower end of the top head is provided with two positioning posts, and the upper part of the rod body is provided with two positioning holes that cooperate with the positioning posts; with the above configuration, when the top head and the rod body are installed together, the two positioning posts at the lower end of the top head are inserted into the two positioning holes at the upper part of the rod body, which facilitates the positioning of the top head and the rod body during installation.

[0010] Preferably, the surface of the mandrel is provided with a high-temperature resistant layer; this feature improves the high-temperature resistance of the mandrel and extends its service life.

[0011] Compared with the prior art, the advantages of this utility model are: it can not only cool the push rod, but also lubricate the push rod, reducing the wear of the push rod during the piercing process, extending the service life of the push rod, and is convenient to use and highly practical. Attached Figure Description

[0012] Figure 1 This is an exploded view of this utility model;

[0013] Figure 2 This is a schematic diagram of the first isometric structure of this utility model;

[0014] Figure 3 This is a schematic diagram of the top structure;

[0015] Figure 4This is a cross-sectional structural schematic diagram of the present invention;

[0016] Figure 5 yes Figure 1 A magnified structural diagram of part A in the middle.

[0017] The following are labels in the attached diagram: 1. Top rod; 2. Heat exchange channel; 3. Water inlet; 4. Drain outlet; 5. Oil drain channel; 6. Oil drain hole; 7. Mounting base; 8. Bolt; 9. Positioning pin; 10. Positioning hole; 11. Rod body; 12. Top head. Detailed Implementation

[0018] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete.

[0019] Example 1

[0020] like Figures 1 to 5 The present invention relates to a mandrel for hot-rolled steel pipes, comprising a mandrel 1, wherein the mandrel 1 is provided with a cooling mechanism and a lubrication mechanism. The cooling mechanism has a cooling function, and the lubrication mechanism has a lubrication function. When the mandrel 1 pierces the bar, the cooling mechanism on the mandrel 1 cools the mandrel 1, while the lubrication mechanism lubricates the mandrel 1. The lubrication of the mandrel 1 reduces the wear of the mandrel 1 during the piercing process and extends the service life of the mandrel 1, making it highly practical.

[0021] like Figure 4 The cooling mechanism includes a heat exchange channel 2. The heat exchange channel 2 is provided on the push rod 1, and the heat exchange channel 2 is provided with a water inlet 3 and a drain outlet 4. When the heat exchange channel 2 is perforated in the rod, external water is introduced into the heat exchange channel 2 through the water inlet 3. Then, the water in the heat exchange channel 2 cools and dissipates heat from the push rod 1. Afterward, the water is discharged through the drain outlet 4 on the heat exchange channel 2 and collected. By cooling and dissipating heat from the heat exchange channel 2, the strength of the heat exchange channel 2 is ensured, the normal use of the heat exchange channel 2 is guaranteed, and the reliability is high.

[0022] like Figure 4The lubrication mechanism includes multiple oil drainage channels 5, with multiple oil drainage channels 5 provided on the push rod 1. Each of the multiple oil drainage channels 5 extends through the push rod 1 from front to back, and each of the multiple oil drainage channels 5 has an oil drainage hole 6 at its output end. When the push rod 1 pierces the rod, external lubricating oil is introduced into the multiple oil drainage channels 5. The lubricating oil then exits through the oil drainage holes 6 on the multiple oil drainage channels 5 onto the surface of the push rod 1. By attaching a layer of lubricating oil to the end of the push rod 1, the friction between the push rod 1 and the rod is reduced, the wear of the push rod 1 during the piercing process is decreased, and the service life of the push rod 1 is ensured. The mechanism is convenient to use and highly reliable.

[0023] like Figure 1 , Figure 3 and Figure 4 The push rod 1 includes a rod body 11, a push head 12, and a connecting mechanism. The rod body 11 and the push head 12 are connected by the connecting mechanism. With the above configuration, when the push head 12 is worn out, the push head 12 can be removed from the rod body 11 and replaced with a new push head 12. There is no need to replace the entire push head 12, which is convenient to use.

[0024] like Figure 1 and Figure 5 The connecting mechanism includes multiple mounting seats 7 and multiple bolts 8. Multiple mounting seats 7 are provided on the upper part of the rod body 11. The multiple mounting seats 7 are all fixedly installed on the upper part of the rod body 11. The multiple mounting seats 7 are evenly distributed around the upper circumference of the rod body 11. The multiple mounting seats 7 are all fixedly installed on the lower end of the oil drain hole 6 by multiple bolts 8. Through the above arrangement, the rod body 11 and the top head 12 are detachably connected, which facilitates the disassembly and replacement of the top head 12.

[0025] like Figure 1 and Figure 3 The lower end of the top head 12 is provided with two positioning pins 9, and the upper part of the rod body 11 is provided with two positioning holes 10 that cooperate with the positioning pins 9. With the above configuration, when the top head 12 and the rod body 11 are installed together, the two positioning pins 9 at the lower end of the top head 12 are inserted into the two positioning holes 10 at the upper part of the rod body 11, which facilitates the positioning of the installation between the top head 12 and the rod body 11.

[0026] Example 2

[0027] Based on Embodiment 1, a high-temperature resistant layer is provided on the surface of the mandrel 12; through the above provision, the high-temperature resistance of the mandrel 12 is improved, and the service life of the mandrel 12 is increased.

[0028] The bolt 8 for the top rod of the hot-rolled steel pipe of this utility model is purchased from the market. Technical personnel in this industry only need to install and operate it according to the accompanying instruction manual, without requiring any creative work from those skilled in the art.

[0029] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A push rod for hot-rolled steel pipes, comprising a push rod (1); characterized in that, The top rod (1) is equipped with a cooling mechanism and a lubrication mechanism. The cooling mechanism has a cooling function, and the lubrication mechanism has a lubrication function.

2. A push rod for hot-rolled steel pipes as described in claim 1, characterized in that, The cooling mechanism includes a heat exchange channel (2), a heat exchange channel (2) is provided on the top rod (1), and a water inlet (3) and a water outlet (4) are provided on the heat exchange channel (2).

3. A push rod for hot-rolled steel pipes as described in claim 1, characterized in that, The lubrication mechanism includes an oil drain channel (5), and there are multiple oil drain channels (5). Multiple oil drain channels (5) are provided on the push rod (1). Multiple oil drain channels (5) pass through the push rod (1) from front to back. The output end of multiple oil drain channels (5) is provided with an oil drain hole (6).

4. A push rod for hot-rolled steel pipes as described in claim 1, characterized in that, The top rod (1) includes a rod body (11), a top head (12), and a connecting mechanism. The rod body (11) and the top head (12) are connected by the connecting mechanism.

5. A push rod for hot-rolled steel pipes as described in claim 4, characterized in that, The connecting mechanism includes multiple mounting seats (7) and multiple bolts (8). Multiple mounting seats (7) are provided on the upper part of the rod (11). Multiple mounting seats (7) are fixedly installed on the upper part of the rod (11). Multiple mounting seats (7) are evenly distributed around the upper circumference of the rod (11). Multiple mounting seats (7) are fixedly installed on the lower end of the oil drain hole (6) by multiple bolts (8).

6. A push rod for hot-rolled steel pipes as described in claim 4, characterized in that, The lower end of the top head (12) is provided with two positioning posts (9), and the upper part of the rod (11) is provided with two positioning holes (10) that cooperate with the positioning posts (9).

7. A push rod for hot-rolled steel pipes as described in claim 4, characterized in that, The surface of the top head (12) is provided with a high temperature resistant layer.

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