Stainless steel seamless tube expanding device

Abstract

The utility model provides a stainless steel seamless tube expanding device, which relates to the technical field of stainless steel seamless tube processing, and comprises a mounting frame, a fixed clamping part, a movable clamping part, a fixed plate, a base, a guide rod, a mounting plate, a first hydraulic cylinder, a pressing block, a clamping groove, a fixed rod and a compression bolt, a second hydraulic cylinder is arranged on one side of the fixed plate, a movable plate is arranged at the output end of the second hydraulic cylinder, an electromagnetic heating ring is arranged on the movable plate, a connector is arranged on one side of the movable plate, and a detachable expanding head is arranged on the connector. The distance between the stainless steel seamless tube and the expanding head can be conveniently controlled by moving the movable clamping part, the stainless steel seamless tube is finally fixed through the fixed clamping part, subsequent expanding of the stainless steel seamless tube is facilitated, adjustment is convenient, and expanding efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of stainless steel seamless pipe processing, and particularly relates to a device for expanding the diameter of a stainless steel seamless pipe. Background Technique

[0002] A stainless steel seamless pipe is a long pipe with a hollow cross-section and no seams around it. When processing a stainless steel seamless pipe, according to the production needs, the end of the pipe needs to be expanded in diameter to facilitate the docking of two pipes. When the existing diameter-expanding device is used, it is necessary to control the distance between the seamless pipe and the diameter-expanding head. However, when adjusting the distance between the seamless pipe and the diameter-expanding head, the seamless pipe is not fixed yet. The staff needs to keep the seamless pipe stable while controlling the distance between the seamless pipe and the diameter-expanding head, which is rather troublesome to adjust and thus affects the diameter-expanding efficiency. Content of the Utility Model

[0003] The purpose of the utility model is to provide a device for expanding the diameter of a stainless steel seamless pipe, aiming to solve the problems mentioned in the above background technique.

[0004] To achieve the above purpose, the utility model adopts the following technical scheme: The device for expanding the diameter of a stainless steel seamless pipe includes a mounting frame. At the upper end of the mounting frame, there are a fixed clamping part, a movable clamping part, and a fixing plate. The fixed clamping part and the fixing plate are respectively arranged at both ends of the upper surface of the mounting frame. Both the fixed clamping part and the movable clamping part include a base. On the upper surface of the base, there is a guide rod. At the top of the guide rod, there is a mounting plate. On the lower surface of the mounting plate, there is a first hydraulic cylinder. The output end of the first hydraulic cylinder is provided with a pressing block. The pressing block is slidably connected to the guide rod. Both the base and the pressing block are provided with clamping grooves for accommodating the seamless pipe. A fixing rod is arranged between the base in the fixed clamping part and the fixing plate. The fixing rod is slidably connected to the base in the movable clamping part. A pressing bolt matching with the fixing rod is threadedly connected to the base in the movable clamping part. On one side of the fixing plate, there is a second hydraulic cylinder. The output end of the second hydraulic cylinder is provided with a movable plate. An electromagnetic heating coil is arranged on the movable plate. On one side of the movable plate, there is a connecting head. A detachable diameter-expanding head is arranged on the connecting head.

[0005] Preferably, compressible cushions are arranged in the clamping grooves of the base and the pressing block.

[0006] Preferably, the cushion is detachably connected to the clamping groove.

[0007] Preferably, a push rod is arranged on the outer surface of the base in the movable clamping part.

[0008] Preferably, a fixing ring is sleeved on the outer surface of the second hydraulic cylinder. A support rod is arranged between the fixing ring and the fixing plate.

[0009] The beneficial effects of the present utility model are as follows:

[0010] This device can first clamp and fix the stainless steel seamless pipe through the movable clamping part, and then control the distance between the stainless steel seamless pipe and the expanding head conveniently by moving the movable clamping part. Finally, the stainless steel seamless pipe is fixed by the fixed clamping part, so as to facilitate the subsequent expanding of the stainless steel seamless pipe. The distance adjustment is convenient and the expanding efficiency is improved. Description of the Drawings

[0011] Figure 1 It is a schematic structural diagram of a specific embodiment of the present utility model.

[0012] Figure 2 It is a side view of a specific embodiment of the present utility model.

[0013] Figure 3 It is a top view of a specific embodiment of the present utility model.

[0014] In the figure: 1, mounting rack; 2, fixed plate; 3, base; 4, guide rod; 5, mounting plate; 6, first hydraulic cylinder; 7, pressing block; 8, card slot; 9, fixed rod; 10, pressing bolt; 11, second hydraulic cylinder; 12, movable plate; 13, electromagnetic heating coil; 14, connector; 15, expanding head; 16, cushion layer; 17, push rod; 18, fixed ring; 19, support rod; 20, stainless steel seamless pipe. Specific Embodiments

[0015] The following further describes the specific embodiments of the present utility model with reference to the drawings.

[0016] As Figures 1-3As shown in the figure, a device for expanding the diameter of a stainless steel seamless pipe includes a mounting frame 1. At the upper end of the mounting frame 1, there are a fixed clamping part, a movable clamping part and a fixing plate 2. The fixed clamping part and the fixing plate 2 are respectively arranged at both ends of the upper surface of the mounting frame 1. Both the fixed clamping part and the movable clamping part include a base 3. On the upper surface of the base 3, there is a guide rod 4. At the top of the guide rod 4, there is a mounting plate 5. On the lower surface of the mounting plate 5, there is a first hydraulic cylinder 6. The output end of the first hydraulic cylinder 6 is provided with a pressing block 7. The pressing block 7 is slidably connected to the guide rod 4. Both the base 3 and the pressing block 7 are provided with clamping grooves 8 for accommodating the seamless pipe. Between the base 3 in the fixed clamping part and the fixing plate 2, there is a fixed rod 9. The fixed rod 9 is slidably connected to the base 3 in the movable clamping part. A pressing bolt 10 matching with the fixed rod 9 is threadedly connected to the base 3 in the movable clamping part. On one side of the fixing plate 2, there is a second hydraulic cylinder 11. The output end of the second hydraulic cylinder 11 is provided with a movable plate 12. On the movable plate 12, there is an electromagnetic heating coil 13. On one side of the movable plate 12, there is a connecting head 14. A detachable diameter-expanding head 15 is arranged on the connecting head 14.

[0017] Before fixing the stainless steel seamless pipe 20, first drive the movable plate 12 to move through the output end of the second hydraulic cylinder 11, and abut the movable plate 12 against one side of the fixing plate 2, and then fix the stainless steel seamless pipe 20. When fixing the stainless steel seamless pipe 20, control the output ends of the two first hydraulic cylinders 6 to retract, so that the pressing block 7 moves upward along the guide rod 4, so that there is sufficient distance between the pressing block 7 and the base 3 for placing the stainless steel seamless pipe 20. Then control the first hydraulic cylinder 6 in the movable clamping part to start. The output end of this first hydraulic cylinder 6 pushes the pressing block 7 to move downward, and cooperates with the base 3 on the movable clamping part to realize the clamping and fixing of the stainless steel seamless pipe 20. Then control the movable clamping part to move along the fixed rod 9, so that the distance between the stainless steel seamless pipe 20 on the movable clamping part and the diameter-expanding head 15 can be controlled. When the distance is adjusted appropriately, fix the base 3 in the movable clamping part on the fixed rod 9 through the pressing bolt 10. Then, through the first hydraulic cylinder 6, the pressing block 7 and the base 3 in the fixed clamping part, the clamping and fixing of the stainless steel seamless pipe 20 are realized. By setting the movable clamping part and the fixed clamping part, not only can the distance between the stainless steel seamless pipe 20 and the diameter-expanding head 15 be conveniently controlled, but also through the movable clamping part and the fixed clamping part, the two positions of the stainless steel seamless pipe 20 can be clamped and fixed, so that the stability of the clamping and fixing of the stainless steel seamless pipe 20 can be improved.

[0018] After the clamping and fixing of the stainless steel seamless pipe 20 are completed, the output end of the second hydraulic cylinder 11 is used to push the movable plate 12 to move. The movable plate 12 drives the electromagnetic heating coil 13 to move. During the movement of the electromagnetic heating coil 13, one end of the stainless steel seamless pipe 20 enters the inside of the coil of the electromagnetic heating coil 13. Then, by starting the electromagnetic heating coil 13, the end of the stainless steel seamless pipe 20 is heated to reduce the hardness of the stainless steel seamless pipe 20. After the heating is completed, the electromagnetic heating coil 13 is turned off. At the same time, the output end of the second hydraulic cylinder 11 continues to extend outwards, driving the expanding head 15 into the inside of the end of the stainless steel seamless pipe 20 that has been heated. Through the continuous extrusion of the expanding head 15, the expanding processing of the stainless steel seamless pipe 20 is realized.

[0019] The expanding head 15 and the connecting head 14 can be connected by threads, or by bolts, buckles or other connection methods.

[0020] Furthermore, compressible cushions 16 are arranged in the clamping grooves 8 of the base 3 and the pressing block 7. The cushions 16 are made of cotton or rubber materials. By setting the compressible cushions 16, the deformation of the cushions 16 caused by extrusion can increase the friction force with the outer surface of the stainless steel seamless pipe 20, thereby improving the clamping stability of the stainless steel seamless pipe 20.

[0021] Furthermore, the cushion 16 and the clamping groove 8 are detachably connected. The cushion 16 and the clamping groove 8 can be connected by bolts or by gluing. Through the detachable connection, different thickness cushions 16 can be conveniently replaced, so that stainless steel seamless pipes 20 with various pipe diameters can be clamped and fixed, and the appropriate expanding head 15 can be replaced, thereby improving the applicable range of the device.

[0022] Furthermore, a push rod 17 is arranged on the outer surface of the base 3 of the movable clamping part. The push rod 17 facilitates the movement of the movable clamping part on the fixed rod 9.

[0023] Furthermore, a fixed ring 18 is sleeved on the outer surface of the second hydraulic cylinder 11, and a support rod 19 is arranged between the fixed ring 18 and the fixed plate 2 to improve the working stability of the second hydraulic cylinder 11.

[0024] The device can first clamp and fix the stainless steel seamless pipe 20 through the movable clamping part, and then control the distance between the stainless steel seamless pipe 20 and the expanding head 15 conveniently by moving the movable clamping part. Then, the final fixing of the stainless steel seamless pipe 20 is realized through the fixed clamping part, so as to facilitate the subsequent expanding of the stainless steel seamless pipe 20. The adjustment is convenient and the expanding efficiency is improved.

[0025] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "installation", "connection", and "coupling" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

Claims

1. A stainless steel seamless pipe expansion device, characterized in that: The invention comprises a mounting frame (1), wherein the upper end of the mounting frame (1) is provided with a fixed clamping part, a movable clamping part and a fixed plate (2), wherein the fixed clamping part and the fixed plate (2) are respectively arranged at two ends of the upper surface of the mounting frame (1), wherein the fixed clamping part and the movable clamping part both comprise a base (3), wherein the upper surface of the base (3) is provided with a guide rod (4), wherein the top end of the guide rod (4) is provided with a mounting plate (5), wherein the lower surface of the mounting plate (5) is provided with a first hydraulic cylinder (6), wherein the output end of the first hydraulic cylinder (6) is provided with a pressure block (7), wherein the pressure block (7) is slidably connected to the guide rod (4), wherein the base (3) and the pressure block (7) are both provided with a portion for accommodating an uncontrolled hydraulic cylinder. A slot (8) for the seam pipe, a fixing rod (9) is arranged between the base (3) in the fixed clamping part and the fixed plate (2), the fixing rod (9) is slidably connected to the base (3) in the movable clamping part, a clamping bolt (10) matched with the fixing rod (9) is threadedly connected to the base (3) in the movable clamping part, a second hydraulic cylinder (11) is arranged on one side of the fixed plate (2), a movable plate (12) is arranged at the output end of the second hydraulic cylinder (11), an electromagnetic heating coil (13) is arranged on the movable plate (12), a connecting head (14) is arranged on one side of the movable plate (12), and a detachable expanding head (15) is arranged on the connecting head (14).

2. The stainless steel seamless pipe expansion device according to claim 1, characterized in that: A compressible cushion layer (16) is provided in the base (3) and the slot (8) of the pressing block (7).

3. The stainless steel seamless pipe expansion device according to claim 2, characterized in that: The cushion layer (16) and the card slot (8) are detachably connected.

4. The stainless steel seamless pipe expansion device according to claim 1, characterized in that: A push rod (17) is provided on the outer surface of the base (3) in the movable clamping part.

5. The stainless steel seamless pipe expansion device according to any one of claims 1 to 4, characterized in that: The outer surface of the second hydraulic cylinder (11) is sleeved with a fixing ring (18), and a supporting rod (19) is provided between the fixing ring (18) and the fixing plate (2).

Images