Metal pipe end expanding machining device

Abstract

The utility model discloses a metal pipe fitting end expanding machining device which comprises a bottom supporting block, a lower pressing block is arranged above the bottom supporting block, fixing grooves are formed in the opposite sides of the bottom supporting block and the lower pressing block, one ends of the two fixing grooves are communicated with an expanding groove, the two fixing grooves are each in a semi-cylindrical shape, and the other ends of the two fixing grooves are communicated with the expanding groove. The radius of each opening expanding groove is larger than that of the corresponding fixing groove, the ends, away from the corresponding fixing grooves, of the two opening expanding grooves communicate with the outside, and after the pipe fitting body completes fixing work, the telescopic rod can be driven by the second air cylinder to retract, so that the extrusion head is close to the pipe fitting body till the end of the extrusion head stretches into the pipe fitting body; the inner side of the pipe fitting body is extruded to be enlarged through the extrusion force of the metal pipe fitting, meanwhile, the electric heating pipe is started, the temperature in the two opening expansion grooves is increased, the pipe fitting body in the area of the two opening expansion grooves is heated, and the heating and deformation capacity of the metal pipe fitting is easier.

Description

Technical Field

[0001] The utility model relates to the field of metal pipe processing, in particular to a metal pipe end expansion processing device. Background Art

[0002] Pipe fittings are a general term for parts in pipeline systems that play roles in connection, control, direction change, flow diversion, sealing, support, etc. Steel pipe fittings are all pressure-bearing pipe fittings. In the process of connecting metal pipe fittings, it is often necessary to expand the metal pipe fittings.

[0003] The existing expansion device uses a mechanical device to apply pressure to the pipe fitting to expand the inner radius of the steel pipe fitting to meet production requirements. However, the pipe fitting itself has a certain hardness and is easily broken by mechanical extrusion.

[0004] Therefore, it is necessary to propose a metal pipe end expansion processing device to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a metal pipe end expansion processing device to solve the problem that the existing expansion device uses a mechanical device to apply pressure to the pipe to expand the inner radius of the steel pipe to meet production requirements, but the pipe itself has a certain hardness and is easily broken by mechanical extrusion.

[0006] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: a metal pipe end expansion processing device, comprising a bottom support block, a lower pressure block is arranged above the bottom support block, and the bottom support block and the lower pressure block are provided with fixed grooves on the opposite sides, one end of the two fixed grooves is connected with an expansion groove, the two fixed grooves are both arranged in a semi-cylindrical shape, the radius of the expansion groove is larger than the radius of the corresponding fixed groove, the two expansion grooves are connected to the outside world at one end away from the corresponding fixed groove, the two fixed grooves are engaged with a pipe body, the two expansion grooves are provided with embedded grooves, electric heating pipes are arranged in the embedded grooves, one end of the bottom support block is telescopically provided with an expansion mechanism, a second cylinder is fixed inside the bottom support block, and the second cylinder and the expansion mechanism are fixedly connected.

[0007] Preferably, the expansion mechanism includes a telescopic rod and a fixed seat, the telescopic rod is connected to the second cylinder, the fixed seat is fixed to the end of the telescopic rod away from the second cylinder, an extrusion head is fixed on the side of the fixed seat close to the bottom support block, the extrusion head is configured to be cone-shaped, and the radius of the cone at one end close to the bottom support block is smaller than the radius at one end away from the bottom support block.

[0008] Preferably, one end of the extrusion head extends into the interior of the pipe body, and a protruding end is fixed on the outer side of the extrusion head, and the protruding end is used to cover the two expansion grooves.

[0009] Preferably, two connecting blocks are fixed on both sides of the bottom support block, sliding rods are fixed on the tops of the four connecting blocks, two fixed blocks are fixed on both sides of the lower pressing block, and the four fixed blocks are slidably matched on the corresponding sliding rods respectively.

[0010] Preferably, a U-shaped frame is fixed in the middle of both sides of the bottom support block, the U-shaped opening of the U-shaped frame is downward, and a plurality of first cylinders are fixed to the top of the U-shaped frame, and the bottom ends of the plurality of first cylinders are each provided with a telescopic end, and the bottom ends of the plurality of telescopic ends pass through the U-shaped frame, and the passing end is connected to the top of the lower pressure block.

[0011] Preferably, the bottom support block and the lower pressing block have the same length and width.

[0012] The beneficial technical effect of the utility model is that after the fixing work of the pipe body is completed, the telescopic rod can be driven to retract by the second cylinder, so that the extrusion head is close to the pipe body until the end of the extrusion head extends into the interior of the pipe body. Through its own extrusion force, the inside of the extruded pipe body becomes larger, and at the same time the electric heating tube is started to increase the temperature in the two expansion grooves, and the pipe body in the two expansion groove areas is heated. The metal pipe is heated and its deformation ability is easier.

[0013] As the extrusion head is extended, the protruding end can block the two expansion grooves to prevent the temperature in the expansion grooves from leaking out and maintain heat uniformity. At the same time, the protruding end can prevent the pipe body from deforming and extending during extrusion. When the extrusion head moves away from the pipe body through the second cylinder, the two expansion grooves lose their obstruction and the accumulated heat can be easily discharged. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the metal pipe end expansion processing device of the utility model.

[0015] Figure 2 It is a schematic diagram of the structure of the pipe fitting body and the slide rod of the utility model.

[0016] In the figure: 1. bottom support block; 2. connecting block; 3. sliding rod; 4. pressing block; 5. fixing block; 6. U-shaped frame; 7. first cylinder; 8. telescopic end; 9. fixing groove; 10. pipe body; 11. expansion groove; 12. telescopic rod; 13. fixing seat; 14. extrusion head; 15. protruding end. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] like Figure 1 - Figure 2 As shown, the utility model provides a metal pipe end expansion processing device, including a bottom support block 1, a lower pressing block 4 is arranged above the bottom support block 1, and fixing grooves 9 are opened on the opposite sides of the bottom support block 1 and the lower pressing block 4, and a pipe body 10 is clamped in the two fixing grooves 9. The bottom support block 1 and the lower pressing block 4 can fix the outer side of the pipe body 10.

[0019] Two connecting blocks 2 are fixed on both sides of the bottom support block 1, and sliding rods 3 are fixed on the tops of the four connecting blocks 2. Two fixed blocks 5 are fixed on both sides of the lower pressing block 4, and the four fixed blocks 5 are slidably matched on the corresponding sliding rods 3 respectively. A U-shaped frame 6 is fixed in the middle of both sides of the bottom support block 1, and the U-shaped opening of the U-shaped frame 6 is downward, and a plurality of first cylinders 7 are fixed on the top of the U-shaped frame 6, and the bottom ends of the plurality of first cylinders 7 are all provided with telescopic ends 8, and the bottom ends of the plurality of telescopic ends 8 pass through the U-shaped frame 6, and the passing end is connected to the top of the lower pressing block 4, and the length and width of the bottom support block 1 and the lower pressing block 4 are consistent.

[0020] In the actual operation of the present invention, the pipe body 10 to be processed can be placed in the fixing groove 9 of the bottom support block 1. At this time, the telescopic end 8 of the first cylinder 7 extends downward, which can drive the lower pressing block 4 to descend. At this time, the lower pressing block 4 can also fix the upper surface of the pipe body 10 to prevent the pipe body 10 from moving when the mouth expands.

[0021] The arrangement of multiple slide bars 3 can keep the lowering block 4 vertical when it descends and ascends, thereby improving the stability of movement.

[0022] One end of the two fixed grooves 9 is connected with an expansion groove 11, and the two fixed grooves 9 are both set to be semi-cylindrical, and the radius of the expansion groove 11 is larger than the radius of the corresponding fixed groove 9. The two expansion grooves 11 are connected to the outside world at one end away from the corresponding fixed groove 9. The two expansion grooves 11 are provided with embedded grooves inside, and electric heating pipes are arranged in the embedded grooves. An expansion mechanism is telescopically arranged at one end of the bottom support block 1, and a second cylinder is fixed inside the bottom support block 1, and the second cylinder and the expansion mechanism are fixedly connected. The two expansion grooves 11 can provide space for the expansion of the pipe body 10.

[0023] The expansion mechanism includes a telescopic rod 12 and a fixed seat 13. The telescopic rod 12 is connected to the second cylinder. The fixed seat 13 is fixed to the end of the telescopic rod 12 away from the second cylinder. An extrusion head 14 is fixed on the side of the fixed seat 13 close to the bottom support block 1. The extrusion head 14 is configured to be conical. The radius of the cone at the end close to the bottom support block 1 is smaller than the radius at the end away from the bottom support block 1. One end of the extrusion head 14 extends into the interior of the pipe body 10, and a protruding end 15 is fixed on the outer side of the extrusion head 14. The protruding end 15 is used to cover the two expansion grooves 11. The radius of the extrusion head 14 gradually increases, and the maximum radius of the extrusion head 14 is greater than the inner radius of the pipe body 10.

[0024] In the actual operation of the utility model, after the fixing work of the pipe body 10 is completed, the telescopic rod 12 can be driven to retract by the second cylinder, so that the extrusion head 14 is close to the pipe body 10 until the end of the extrusion head 14 extends into the interior of the pipe body 10. Through its own extrusion force, the inner side of the extruded pipe body 10 becomes larger, and at the same time, the electric heating tube is started to increase the temperature in the two expansion grooves 11, and the pipe body 10 in the area of ​​the two expansion grooves 11 is heated. When the metal pipe 10 is heated, the deformation ability becomes easier.

[0025] At the same time, as the extrusion head 14 is extended, the protruding end 15 can cover the two expansion grooves 11 to prevent the temperature in the expansion grooves 11 from leaking out and maintain heat uniformity. At the same time, the protruding end 15 can prevent the pipe body 10 from deforming and extending during extrusion.

[0026] When the extrusion head 14 moves away from the pipe body 10 through the second cylinder, the two expansion grooves 11 are no longer blocked, and the accumulated heat can be easily discharged.

Claims

1. A metal pipe end expansion processing device, characterized in that: The invention comprises a bottom support block (1), a lower pressing block (4) is arranged above the bottom support block (1), a fixing groove (9) is provided on the opposite side of the bottom support block (1) and the lower pressing block (4), one end of the two fixing grooves (9) is connected with an expansion groove (11), the two fixing grooves (9) are both arranged in a semi-cylindrical shape, the radius of the expansion groove (11) is larger than the radius of the corresponding fixing groove (9), one end of the two expansion grooves (11) away from the corresponding fixing groove (9) is connected with the outside, a pipe body (10) is engaged in the two fixing grooves (9), an embedded groove is provided inside the two expansion grooves (11), an electric heating pipe is arranged in the embedded groove, an expansion mechanism is telescopically provided at one end of the bottom support block (1), a second cylinder is fixed inside the bottom support block (1), and the second cylinder and the expansion mechanism are fixedly connected.

2. A metal pipe end expansion processing device according to claim 1, characterized in that: The expansion mechanism comprises a telescopic rod (12) and a fixed seat (13); the telescopic rod (12) is connected to the second cylinder; the fixed seat (13) is fixed to an end of the telescopic rod (12) away from the second cylinder; an extrusion head (14) is fixed to a side of the fixed seat (13) close to the bottom support block (1); the extrusion head (14) is configured to be conical, and the radius of the end of the cone close to the bottom support block (1) is smaller than the radius of the end of the cone away from the bottom support block (1).

3. A metal pipe end expansion processing device according to claim 2, characterized in that: One end of the extrusion head (14) extends into the interior of the pipe body (10), and a protruding end (15) is fixed on the outside of the extrusion head (14), and the protruding end (15) is used to cover the two expansion grooves (11).

4. A metal pipe end expansion processing device according to claim 1, characterized in that: Two connecting blocks (2) are fixed on both sides of the bottom support block (1), and sliding rods (3) are fixed on the tops of the four connecting blocks (2). Two fixing blocks (5) are fixed on both sides of the lower pressing block (4), and the four fixing blocks (5) are respectively slidably matched on the corresponding sliding rods (3).

5. The metal pipe end expansion processing device according to claim 1, characterized in that: A U-shaped frame (6) is fixed in the middle of both sides of the bottom support block (1), the U-shaped opening of the U-shaped frame (6) is downward, and a plurality of first cylinders (7) are fixed at the top of the U-shaped frame (6), and the bottom ends of the plurality of first cylinders (7) are all provided with telescopic ends (8), and the bottom ends of the plurality of telescopic ends (8) pass through the U-shaped frame (6), and the passing ends are connected to the top of the lower pressing block (4).

6. A metal pipe end expansion processing device according to claim 1, characterized in that: The bottom support block (1) and the lower pressing block (4) have the same length and width.

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