CA2050840A1 - Pipe bending machine for elongate material - Google Patents
Pipe bending machine for elongate materialInfo
- Publication number
- CA2050840A1 CA2050840A1 CA 2050840 CA2050840A CA2050840A1 CA 2050840 A1 CA2050840 A1 CA 2050840A1 CA 2050840 CA2050840 CA 2050840 CA 2050840 A CA2050840 A CA 2050840A CA 2050840 A1 CA2050840 A1 CA 2050840A1
- Authority
- CA
- Canada
- Prior art keywords
- pressure member
- upper pressure
- lower supports
- support frame
- elongate material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Landscapes
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
An improvement in a bending machine for elongate material consisting of a support frame for an upper pressure member positioned entirely to one side of lower supports. This leaves an opposed side of the lower supports open and unobstructed by the support frame. One of the upper pressure member and the lower support members is horizontally movable between an operative position and a loading position. In the operative position the upper pressure member and the lower supports are in axial alignment, and in the loading position clearance is provided above the lower supports to permit elongate material to be loaded onto the lower supports from the open and unobstructed opposed side.
An improvement in a bending machine for elongate material consisting of a support frame for an upper pressure member positioned entirely to one side of lower supports. This leaves an opposed side of the lower supports open and unobstructed by the support frame. One of the upper pressure member and the lower support members is horizontally movable between an operative position and a loading position. In the operative position the upper pressure member and the lower supports are in axial alignment, and in the loading position clearance is provided above the lower supports to permit elongate material to be loaded onto the lower supports from the open and unobstructed opposed side.
Description
The present invention relates to a bending machine for elongate material-5 B~CKGROUND OF THE INVEN?ION
The present invention was developed for bending pipe,however the principles involved are equally applicable to other types of elongate material. Pipe bending machines used for large diameter pipe largely take the form of large presses having two lower supports in axially spaced relation on which a pipe is supported. An upper pressure member is supported by a support frame above and between the two lower supports. Upon relative movement of the upper pressure member and the lower supports the upper pressure member exerts a bending force upon the pipe.
A limiting factor on pipe bending machines used in pipeline construction is the speed at which large diameter pipe can be processed through the machines. The most time consuming aspect of the bending of pipe with a pipe bending machine is the time taken to place pipe to be bent into position on the machine and take the pipe off of the machine once it has been bent.
8UM~ RY OF T~E INVENTION
What is required is a bending machine for elongate material which is configured to enhance the speed at which material being bend can be loaded and unloaded from the lower supports.
According to the present invention there is provided an improvement in a bending machine for elongate material.
These bending machines are generally configured to have two lower supports in axially spaced relation on which elongate material is supported; and an upper pressure member secured to a support frame and supported above and in axial alignment with the two lower supports. Upon relative vertical movement of the upper pressure member and the lower supports, the upper pressure member exerts a bending force upon the elongate material. The improvement is 20~08~0 compri~ed o a support frame ~or the upper pres~ure member positioned entirely to one ~ide o~ the lower supports.
This leaves an opposed side of the lower supports open and unobstructed by the support frame. One of the upper pressure member and the lower support members i8 horizontally movable between an operative position and a loading position. In the operative position the upper pressure member and the lower supports are in axial alignment, and in the loading position clearance is provided above the lower supports to permit elongate material to be loaded onto the lower supports from the open and unobstructed opposed side.
Given the large diameter of pipe required for pipeline construction the pipe must be moved on and off of the bending machine by heavy equipment. However, all existing pipe bending machines used in pipeline construction have the upper pressure member supported on both sides which obstructs access to the lower supports necessitating end loading. End loading is many times more time consuming than side loading. It is also more dangerous as pipe must be "stabbed" into an aperture at one end of the machine.
~nd loading also is more likely to result in damage occurring to the material. With the present invention either the upper pressure member or the pair of lower supports move out of the way to permit ready access for heavy equipment to side load pipe onto the lower supports thereby simplifying the procedure of handling pipe.
: 30 BaIEF DESCRIPTION OF THE DRAWINGS
These and other features of the invention will become more apparent from the following description in which reference is made to the appended drawings, wherein:
FIaURE 1 is an end elevation view of a pipe bending machine constructed in accordance with the teachings of the present invention with the upper pressure member in an operative position.
FIGURE 2 is an end elevation view of a pipe bending machine constructed in accordance with the teachings of the pre~ent invention with the upper pre~sure member in a loading position.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
The preferred embodiment, a pipe bending machine generally identified by reference numeral 10, will now be described with reference to FIGURES 1 and 2.
There will first be described those features of the present invention which are common to the prior art. Pipe bending machine 10 is in the form of a large press. Two lower supports 12 are provided in axially spaced relation on which a pipe 16 is supported. An upper presæure member 18 is supported by a support frame 20. Upper pressure member 18 is supported above and in axially alignment with lower supports 12. Upon relative vertical movement of upper pressure member 18 and lower supports 12, upper pressure member 18 exerts a bending force upon pipe 16.
The improvement consists of a modification in the manner of construction of support frame 20. In accordance with the invention support frame 20 is positioned entirely to one side 21 of lower shoes 12, thereby leaving an opposed side 23 of lower shoes 12 open and unobstructed by support frame 20. Support frame 20 is generally "C"
shaped and has a first end 22 and a second end 24. First end 22 of support frame 20 is pivotally secured a chassis 26 which serves as a base. Upper pressure member 18 is secured to second end 24 of support frame 20 by means of hydraulic cylinders 28. Hydraulic cylinders 28 are confined by guide plates 30. A hydraulic cylinder 32 is secured between support frame 20 and chassis 26.
The use and operation of bending machine 10 will now be de~cribed with reference to FIGURES 1 and 2. The underlying purpose behind the invention is to have clearance provided above lower supports 12 to permit elongate material, such as pipe 16, to be loaded onto lower 20~08~0 supports 12 from one of the sides. The illu~trated embodiment accomplishes this purpose by po~itioning support frame 20 entirely to one side 21 of lower shoes 12, which leaves oppo~ed side 23 open and unobstructed by support frame 20 to facilitate loading. In the operative position upper pressure member 18 and lower support~ 12 must be in axial alignment. It is therefore, neces~ary that either upper pressure member 18 or both of lower supports 12 must be capable of horizontal movement out of axial alignment to provide the clearance required for loading pipe 16 from opposed side 23 onto lower supports 12. In the illustrated embodiment upper pressure member 18 is horizontally movable. In order to load pipe 16 hydraulic cylinder 32 is actuated to pivot "C" shaped support frame 20 to the position illustrated in FIGURE 2. The movement of support frame 20 results in a corresponding movement in upper pressure member 18 horizontally until upper pressure member 18 is no longer in axial alignment with lower supports 12.
With upper pressure member 18 in a loading position, pipe 16 can be placed on lower supports 12 from opposed side 23 using heavy equipment. Once pipe 16 is loaded hydraulic cylinder 32 is again activated to pivot support frame 20 until upper pressure member 18 is returned to the operative position in axial alignment with lower supports 12. With upper pressure member 18 in the operative position hydraulic cylinders 28 can be activated to caused relative vertical movement of upper pressure member 18 and lower supports 12 to exert a bending force upon pipe 16.
Although the illustrated embodiment has a pressure member 18 which is horizontally movable, it will be apparent to one skilled in the art that an alternative is to have lower supports 12 horizontally movable. This can be done, for example, by having both of lower supports 12 horizontally slidable on a base to a position out of axial alignment with upper pressure member 18. It is preferred to move pressure member 18 as there is only one member requiring movement as opposed to two. Although the movement of upper pressure member 18 is accomplished in the 20~0~40 illustrated embodiment by mean~ of a pivotally mounted "C"
shaped support frame 20, there are other means which can be used. For example, in the original proto-type upper pressure member 18 was secured to a parallelogram frame, which folded to permit horizontal movament. The ~C" shaped support frame illustrated i9 preferred due to the relative simplicity of its constr~ction, which reduce~ the co~t of fabrication and the ongoing maintenance required.
It will be apparent to one skilled in the art that other modifications may be made to the preferred embodiment without departing from the spirit and scope of the invention as defined by the claims.
The present invention was developed for bending pipe,however the principles involved are equally applicable to other types of elongate material. Pipe bending machines used for large diameter pipe largely take the form of large presses having two lower supports in axially spaced relation on which a pipe is supported. An upper pressure member is supported by a support frame above and between the two lower supports. Upon relative movement of the upper pressure member and the lower supports the upper pressure member exerts a bending force upon the pipe.
A limiting factor on pipe bending machines used in pipeline construction is the speed at which large diameter pipe can be processed through the machines. The most time consuming aspect of the bending of pipe with a pipe bending machine is the time taken to place pipe to be bent into position on the machine and take the pipe off of the machine once it has been bent.
8UM~ RY OF T~E INVENTION
What is required is a bending machine for elongate material which is configured to enhance the speed at which material being bend can be loaded and unloaded from the lower supports.
According to the present invention there is provided an improvement in a bending machine for elongate material.
These bending machines are generally configured to have two lower supports in axially spaced relation on which elongate material is supported; and an upper pressure member secured to a support frame and supported above and in axial alignment with the two lower supports. Upon relative vertical movement of the upper pressure member and the lower supports, the upper pressure member exerts a bending force upon the elongate material. The improvement is 20~08~0 compri~ed o a support frame ~or the upper pres~ure member positioned entirely to one ~ide o~ the lower supports.
This leaves an opposed side of the lower supports open and unobstructed by the support frame. One of the upper pressure member and the lower support members i8 horizontally movable between an operative position and a loading position. In the operative position the upper pressure member and the lower supports are in axial alignment, and in the loading position clearance is provided above the lower supports to permit elongate material to be loaded onto the lower supports from the open and unobstructed opposed side.
Given the large diameter of pipe required for pipeline construction the pipe must be moved on and off of the bending machine by heavy equipment. However, all existing pipe bending machines used in pipeline construction have the upper pressure member supported on both sides which obstructs access to the lower supports necessitating end loading. End loading is many times more time consuming than side loading. It is also more dangerous as pipe must be "stabbed" into an aperture at one end of the machine.
~nd loading also is more likely to result in damage occurring to the material. With the present invention either the upper pressure member or the pair of lower supports move out of the way to permit ready access for heavy equipment to side load pipe onto the lower supports thereby simplifying the procedure of handling pipe.
: 30 BaIEF DESCRIPTION OF THE DRAWINGS
These and other features of the invention will become more apparent from the following description in which reference is made to the appended drawings, wherein:
FIaURE 1 is an end elevation view of a pipe bending machine constructed in accordance with the teachings of the present invention with the upper pressure member in an operative position.
FIGURE 2 is an end elevation view of a pipe bending machine constructed in accordance with the teachings of the pre~ent invention with the upper pre~sure member in a loading position.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
The preferred embodiment, a pipe bending machine generally identified by reference numeral 10, will now be described with reference to FIGURES 1 and 2.
There will first be described those features of the present invention which are common to the prior art. Pipe bending machine 10 is in the form of a large press. Two lower supports 12 are provided in axially spaced relation on which a pipe 16 is supported. An upper presæure member 18 is supported by a support frame 20. Upper pressure member 18 is supported above and in axially alignment with lower supports 12. Upon relative vertical movement of upper pressure member 18 and lower supports 12, upper pressure member 18 exerts a bending force upon pipe 16.
The improvement consists of a modification in the manner of construction of support frame 20. In accordance with the invention support frame 20 is positioned entirely to one side 21 of lower shoes 12, thereby leaving an opposed side 23 of lower shoes 12 open and unobstructed by support frame 20. Support frame 20 is generally "C"
shaped and has a first end 22 and a second end 24. First end 22 of support frame 20 is pivotally secured a chassis 26 which serves as a base. Upper pressure member 18 is secured to second end 24 of support frame 20 by means of hydraulic cylinders 28. Hydraulic cylinders 28 are confined by guide plates 30. A hydraulic cylinder 32 is secured between support frame 20 and chassis 26.
The use and operation of bending machine 10 will now be de~cribed with reference to FIGURES 1 and 2. The underlying purpose behind the invention is to have clearance provided above lower supports 12 to permit elongate material, such as pipe 16, to be loaded onto lower 20~08~0 supports 12 from one of the sides. The illu~trated embodiment accomplishes this purpose by po~itioning support frame 20 entirely to one side 21 of lower shoes 12, which leaves oppo~ed side 23 open and unobstructed by support frame 20 to facilitate loading. In the operative position upper pressure member 18 and lower support~ 12 must be in axial alignment. It is therefore, neces~ary that either upper pressure member 18 or both of lower supports 12 must be capable of horizontal movement out of axial alignment to provide the clearance required for loading pipe 16 from opposed side 23 onto lower supports 12. In the illustrated embodiment upper pressure member 18 is horizontally movable. In order to load pipe 16 hydraulic cylinder 32 is actuated to pivot "C" shaped support frame 20 to the position illustrated in FIGURE 2. The movement of support frame 20 results in a corresponding movement in upper pressure member 18 horizontally until upper pressure member 18 is no longer in axial alignment with lower supports 12.
With upper pressure member 18 in a loading position, pipe 16 can be placed on lower supports 12 from opposed side 23 using heavy equipment. Once pipe 16 is loaded hydraulic cylinder 32 is again activated to pivot support frame 20 until upper pressure member 18 is returned to the operative position in axial alignment with lower supports 12. With upper pressure member 18 in the operative position hydraulic cylinders 28 can be activated to caused relative vertical movement of upper pressure member 18 and lower supports 12 to exert a bending force upon pipe 16.
Although the illustrated embodiment has a pressure member 18 which is horizontally movable, it will be apparent to one skilled in the art that an alternative is to have lower supports 12 horizontally movable. This can be done, for example, by having both of lower supports 12 horizontally slidable on a base to a position out of axial alignment with upper pressure member 18. It is preferred to move pressure member 18 as there is only one member requiring movement as opposed to two. Although the movement of upper pressure member 18 is accomplished in the 20~0~40 illustrated embodiment by mean~ of a pivotally mounted "C"
shaped support frame 20, there are other means which can be used. For example, in the original proto-type upper pressure member 18 was secured to a parallelogram frame, which folded to permit horizontal movament. The ~C" shaped support frame illustrated i9 preferred due to the relative simplicity of its constr~ction, which reduce~ the co~t of fabrication and the ongoing maintenance required.
It will be apparent to one skilled in the art that other modifications may be made to the preferred embodiment without departing from the spirit and scope of the invention as defined by the claims.
Claims (2)
1. An improvement in a bending machine for elongate material having two lower supports in axially spaced relation on which elongate material is supported, an upper pressure member secured to a support frame and supported above and in axial alignment with the two lower supports, at least one of the lower supports and upper pressure member being vertically movable, means being provided to cause relative vertical movement of the lower supports and upper pressure member such that upon relative vertical movement of the upper pressure member and the lower supports, the upper pressure member exerts a bending force upon the elongate material, the improvement being comprised of:
a. a support frame for the upper pressure member positioned entirely to one side of the lower supports, thereby leaving an opposed side of the lower supports open and unobstructed by the support frame; and b. one of the upper pressure member and the lower support members being horizontally movable between an operative position and a loading position, such that in the operative position the upper pressure member and the lower supports are in axial alignment, and in the loading position clearance is provided above the lower supports to permit elongate material to be loaded onto the lower supports from the open and unobstructed opposed side.
a. a support frame for the upper pressure member positioned entirely to one side of the lower supports, thereby leaving an opposed side of the lower supports open and unobstructed by the support frame; and b. one of the upper pressure member and the lower support members being horizontally movable between an operative position and a loading position, such that in the operative position the upper pressure member and the lower supports are in axial alignment, and in the loading position clearance is provided above the lower supports to permit elongate material to be loaded onto the lower supports from the open and unobstructed opposed side.
2. The improvement as defined in Claim 1, having a generally "C" shaped support frame for the upper pressure member which is pivotally mounted to a base, means being provided to pivot the support frame thereby moving the upper pressure member horizontally between the operative position and the loading position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2050840 CA2050840A1 (en) | 1991-09-06 | 1991-09-06 | Pipe bending machine for elongate material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2050840 CA2050840A1 (en) | 1991-09-06 | 1991-09-06 | Pipe bending machine for elongate material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2050840A1 true CA2050840A1 (en) | 1993-03-07 |
Family
ID=4148318
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2050840 Abandoned CA2050840A1 (en) | 1991-09-06 | 1991-09-06 | Pipe bending machine for elongate material |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2050840A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117299901A (en) * | 2023-11-28 | 2023-12-29 | 山东宏力异型钢管有限公司 | Automatic push bending forming machine |
-
1991
- 1991-09-06 CA CA 2050840 patent/CA2050840A1/en not_active Abandoned
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117299901A (en) * | 2023-11-28 | 2023-12-29 | 山东宏力异型钢管有限公司 | Automatic push bending forming machine |
| CN117299901B (en) * | 2023-11-28 | 2024-02-13 | 山东宏力异型钢管有限公司 | Automatic push bending forming machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |