CN113042590A

CN113042590A - Steel pipe cold bending device

Info

Publication number: CN113042590A
Application number: CN202110460895.7A
Authority: CN
Inventors: 彭启威; 施梦一; 莫怡晖
Original assignee: Huzhou Huate Stainless Steel Tubes Manufacturing Co ltd
Current assignee: Huzhou Huate Stainless Steel Tubes Manufacturing Co ltd
Priority date: 2021-04-27
Filing date: 2021-04-27
Publication date: 2021-06-29
Anticipated expiration: 2041-04-27
Also published as: CN113042590B

Abstract

A steel pipe cold-bending device comprises a platform, a profiling fixed on the platform, two die heads arranged on opposite surfaces of the profiling and matched with the profiling to bend a steel pipe, a hydraulic cylinder used for pushing the die heads to be close to or far away from the profiling, and a driving mechanism used for driving the hydraulic cylinder to be close to or far away from the profiling, wherein a bending channel is formed between the die heads and the profiling, the steel pipe cold-bending device further comprises end sleeve seats symmetrically arranged on two sides of the bending channel and used for clamping the end parts of the steel pipe, auxiliary limiting mechanisms arranged in the end sleeve seats, translation seats hinged with the end sleeve seats, and distance adjusting mechanisms used for pushing the translation seats to be close to or far away from the end sleeve seats, and the section width of each end sleeve seat is gradually increased from the port of the end sleeve seat to the bottom plate of the end sleeve seat. The steel pipe bending device ensures that the two ends of the steel pipe are stressed uniformly, so that the two ends of the steel pipe can move synchronously, the steel pipe is prevented from inclining to one side when being bent, and the bending precision of the steel pipe is improved.

Description

Steel pipe cold bending device

Technical Field

The invention relates to the technical field of steel pipe expanding equipment, in particular to a steel pipe cold bending device.

Background

With the rapid development of modern industrial technology and the appearance of the cold bending pipe bender, the processing of medium and small batches of section parts is well solved. The cold bending precision of the pipe bender is very high in the important process of section processing for manufacturing a steel structure, and the cold bending of the pipe bender plays an important role in the manufacturing precision of the pipe bender at present and in the future. However, when the existing cold bending device bends the steel pipe, the two ends of the steel pipe are easy to incline due to uneven stress, and the bending precision is reduced.

Disclosure of Invention

The invention aims to provide a cold bending device for a steel pipe, which solves the problems in the background technology.

The technical solution of the invention is as follows: a steel pipe cold-bending device comprises a platform, a profiling fixed on the platform, two die heads arranged on opposite surfaces of the profiling and matched with the profiling to bend a steel pipe, a hydraulic cylinder used for pushing the die heads to be close to or far away from the profiling, and a driving mechanism used for driving the hydraulic cylinder to be close to or far away from the profiling, wherein a bending channel is formed between the die heads and the profiling, the steel pipe cold-bending device further comprises end sleeve seats symmetrically arranged on two sides of the bending channel and used for clamping the end parts of the steel pipe, auxiliary limiting mechanisms arranged in the end sleeve seats, translation seats hinged with the end sleeve seats, and distance adjusting mechanisms used for pushing the translation seats to be close to or far away from the end sleeve seats, and the section width of each end sleeve seat is gradually increased from the port of the end sleeve seat to the bottom plate of the end sleeve seat.

Preferably, the auxiliary limiting mechanism comprises inclined supporting blocks arranged on the inner wall of the end sleeve seat at intervals and arc-shaped convex blocks arranged on one surface, facing the bottom plate, of the inclined supporting blocks.

Preferably, the support sloping block is provided with a horizontal support surface and an oblique guide surface, and the horizontal support surface and the oblique guide surface form an included angle a, wherein 30 ° < a <50 °.

Preferably, the arc-shaped projection is arranged at one end of the inclined guide surface far away from the inner wall of the end socket.

Preferably, the length of the plurality of horizontal support surfaces decreases gradually from the bottom plate to the port.

As preferred, apart from adjustment mechanism include by the platform edge to the spout that the passageway was seted up of bending, establish translation seat bottom and with spout sliding connection's slider, establish in the spout and with the screw rod of slider spiro union, with the screw rod rigid coupling just extends the dwang of spout, establish in the platform and with annular, the rigid coupling of spout intercommunication are in on the dwang and with annular sliding connection's crown plate, establishing the rotatory piece of dwang tip.

Preferably, the edge of the sliding groove is provided with a scale.

Preferably, the die head further comprises a balance mechanism arranged between the two piston rods of the hydraulic cylinders and used for buffering the stress on the piston rods, wherein the balance mechanism comprises a reinforcing block for connecting the piston rods and the die head, a buffer seat fixedly connected to the reinforcing block, a mounting groove arranged on the opposite surface of the buffer seat, a spring arranged in the mounting groove, a link rod with two ends respectively connected with the spring, and a telescopic rod arranged in the middle of the link rod.

Preferably, the end socket further comprises two arcuate clamping plates removably attached to the base plate.

Preferably, a groove is formed in the end portion, corresponding to the bottom plate, of the translation seat.

The invention has the beneficial effects that:

compared with the prior art, the invention ensures that the two ends of the steel pipe are uniformly stressed by matching the end sleeve seat and the auxiliary limiting mechanism, so that the two ends of the steel pipe can synchronously move, the steel pipe is prevented from inclining to one side when being bent, and the bending precision of the steel pipe is improved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of an auxiliary limiting mechanism;

FIG. 3 is a schematic view of a balancing mechanism;

Detailed Description

The invention is further illustrated by the following examples in connection with the accompanying drawings.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

In an embodiment, as shown in fig. 1 to 3, a steel pipe cold-bending apparatus includes a platform 1, a master form 2 fixed on the platform 1, two die heads 3 disposed on opposite surfaces of the master form 2 and matched with the master form 2 for bending a steel pipe, a hydraulic cylinder 4 for pushing the die heads 3 to approach or be away from the master form 2, and a driving mechanism 5 for driving the hydraulic cylinder 4 to approach or be away from, wherein the driving mechanism 5 includes a supporting block 501 disposed at the bottom of the hydraulic cylinder 4, a guide groove 502 slidably connected with the bottom of the supporting block 501, a lead screw 503 screwed with the supporting block 501, and a two-phase motor 504 for driving the lead screw 503 to rotate, a bending channel 6 is formed between the die heads 3 and the master form 2, and the steel pipe cold-bending apparatus further includes end socket bases 7 symmetrically disposed at two sides of the bending channel 6 for clamping the end of the steel pipe, auxiliary limiting mechanisms 9 and 9 disposed in the end socket, With tip cover seat 7 articulated translation seat 8, be used for promoting translation seat 8 is close to or the distance adjustment mechanism 10 of keeping away from, preferably, translation seat 8 corresponds the tip of bottom plate 702 has seted up recess 801, in order to improve the stability to steel pipe tip centre gripping, the cross-sectional width of tip cover seat 7 by the port 701 of tip cover seat 7 to bottom plate 702 of tip cover seat 7 increases gradually, and the applicant finds that the steel pipe is bending, and both ends atress is unbalanced and leads to the steel pipe to one side slope easily, reduces the bending precision, uses through the cooperation of tip cover seat 7 and supplementary stop gear 9, guarantees that the steel pipe both ends atress is even, makes the both ends of steel pipe can synchronous motion, has avoided the steel pipe to one side slope when bending, improves the precision that the steel pipe was bent.

Further, the auxiliary limiting mechanism 9 includes a supporting inclined block 901 disposed at an interval on the inner wall of the end socket 7, and an arc-shaped protrusion 902 disposed on a surface of the supporting inclined block 901 facing the bottom plate 702. The inclined support block 901 is provided with a horizontal support surface 90101 and an inclined guide surface 90102, an included angle a is formed between the horizontal support surface 90101 and the inclined guide surface 90102, wherein 30 degrees < a <50 degrees, the horizontal support surface 90101 is used for supporting the end of the steel pipe, and the inclined guide surface 90102 is used for guiding the steel pipe when the steel pipe moves in the end sleeve seat 7. The arc-shaped convex block 902 is arranged at one end of the inclined guide surface 90102 far away from the inner wall of the end sleeve seat 7. The lengths of the plurality of horizontal supporting surfaces 90101 are gradually reduced from the bottom plate 702 to the port 701.

Further, distance adjustment mechanism 10 includes by platform 1 edge to spout 1001 that bend passageway 6 was seted up, establish translation seat 8 bottom and with spout 1001 sliding connection's slider 1002, establish in the spout 1001 and with the screw rod 1003 of slider 1002 spiro union, with the screw rod 1003 rigid coupling just extends the dwang 1004 of spout 1001, establish in platform 1 and with annular 1005, the rigid coupling that spout 1001 communicates are in on the dwang 1004 and with annular 1005 sliding connection's crown plate 1006, establish the rotatory piece 1007 at dwang 1004 tip. Preferably, in order to improve the accuracy of the moving distance of the translation base 8 and further realize stable clamping of two ends of the steel pipe, the edge of the sliding groove 1001 is provided with a scale 1008.

Further, the device further comprises a balance mechanism 11 which is arranged between the piston rods 401 of the two hydraulic cylinders 4 and used for buffering the stress of the piston rods 401, wherein the balance mechanism 11 comprises a reinforcing block 1101 which is used for connecting the piston rods 401 and the die head 3, a buffering seat 1102 which is fixedly connected to the reinforcing block 1101, an installation groove 1103 which is arranged on the opposite surface of the buffering seat 1102, a spring 1104 which is arranged in the installation groove 1103, a link 1105 of which the two ends are respectively connected with the spring 1104 and a telescopic rod 1106 which is arranged in the middle of the link 1105, and preferably, one end 1106 of the telescopic rod is fixedly connected to the dual-phase motor 504.

Further, the end socket 7 further includes two arc-shaped clamping plates 703 detachably connected to the bottom plate 702, preferably, the bottom of the arc-shaped clamping plate 703 can be provided with a connecting block, and the distance between the arc-shaped clamping plates 703 can be adjusted and limited by bolts.

Claims

1. The utility model provides a steel pipe cold bending device, includes platform (1), set firmly profiling (2), two on platform (1) are established profiling (2) opposite face and with profiling (2) cooperation is used for bending die head (3) of steel pipe, be used for promoting die head (3) are close to or keep away from actuating mechanism (5) that profiling (2) are close to or keep away from pneumatic cylinder (4), are used for driving pneumatic cylinder (4), die head (3) with be formed with between profiling (2) bending passageway (6), its characterized in that: the steel pipe bending device is characterized by further comprising end sleeve seats (7) symmetrically arranged on two sides of the bending channel (6) and used for clamping the end portions of steel pipes, auxiliary limiting mechanisms (9) arranged in the end sleeve seats (7), translation seats (8) hinged to the end sleeve seats (7) and distance adjusting mechanisms (10) used for pushing the translation seats (8) to be close to or far away from each other, wherein the cross section width of each end sleeve seat (7) is gradually increased from a port (701) of each end sleeve seat (7) to a bottom plate (702) of each end sleeve seat (7).

2. A steel pipe cold-bending apparatus according to claim 1, wherein: the auxiliary limiting mechanism (9) comprises inclined supporting blocks (901) arranged on the inner wall of the end sleeve seat (7) at intervals and arc-shaped convex blocks (902) arranged on one surface, facing the bottom plate (702), of the inclined supporting blocks (901).

3. A steel pipe cold-bending apparatus according to claim 2, wherein: the inclined supporting block (901) is provided with a horizontal supporting surface (90101) and an inclined guiding surface (90102), an included angle a is formed between the horizontal supporting surface (90101) and the inclined guiding surface (90102), and the included angle a is more than 30 degrees and less than 50 degrees.

4. A steel pipe cold-bending apparatus according to claim 3, wherein: the arc-shaped convex block (902) is arranged at one end, far away from the inner wall of the end sleeve seat (7), of the inclined guide surface (90102).

5. A steel pipe cold-bending apparatus according to claim 2, wherein: the lengths of the plurality of horizontal supporting surfaces (90101) are gradually reduced from the bottom plate (702) to the port (701).

6. A steel pipe cold-bending apparatus according to claim 1, wherein: apart from adjustment mechanism (10) include by platform (1) edge to spout (1001) that passageway (6) were seted up bends, establish translation seat (8) bottom and with spout (1001) sliding connection's slider (1002), establish in spout (1001) and with slider (1002) spiro union's screw rod (1003), with screw rod (1003) rigid coupling just extends dwang (1004) of spout (1001), establish in platform (1) and with annular (1005), the rigid coupling of spout (1001) intercommunication are in dwang (1004) and with annular (1006) of annular (1005) sliding connection, establish rotatory piece (1007) of dwang (1004) tip.

7. A steel pipe cold-bending apparatus according to claim 6, wherein: scales (1008) are arranged on the edge of the sliding groove (1001).

8. A steel pipe cold-bending apparatus according to claim 1, wherein: the die head is characterized by further comprising balance mechanisms (11) arranged between two piston rods (401) of the hydraulic cylinders (4) and used for buffering stress of the piston rods (401), wherein each balance mechanism (11) comprises a reinforcing block (1101) connected with the piston rods (401) and the die head (3), a buffer seat (1102) fixedly connected to the reinforcing block (1101), a mounting groove (1103) formed in the opposite surface of the buffer seat (1102), a spring (1104) arranged in the mounting groove (1103), and a connecting rod (1105) with two ends connected with the spring (1104) and an expansion rod (1106) arranged in the middle of the connecting rod (1105).

9. A steel pipe cold-bending apparatus according to claim 1, wherein: the end sleeve seat (7) also comprises two arc-shaped clamping plates (703) which are detachably connected to the bottom plate (702).

10. A steel pipe cold-bending apparatus according to claim 1, wherein: the end part of the translation seat (8) corresponding to the bottom plate (702) is provided with a groove (801).