CN201455086U - Stretch forming machine for plates - Google Patents
Stretch forming machine for plates Download PDFInfo
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- CN201455086U CN201455086U CN2009200939387U CN200920093938U CN201455086U CN 201455086 U CN201455086 U CN 201455086U CN 2009200939387 U CN2009200939387 U CN 2009200939387U CN 200920093938 U CN200920093938 U CN 200920093938U CN 201455086 U CN201455086 U CN 201455086U
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- hydraulic cylinder
- feeding clip
- forming machine
- plate
- frame
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- Shaping Of Tube Ends By Bending Or Straightening (AREA)
Abstract
The utility model a stretch forming machine for plates, relates to plastic processing equipment used for three-dimensional curved surface forming of plate type piece, belongs to the field of mechanical engineering, and aims to make the distribution of the tensile stress and the tension strain of a stretch forming piece to be uniform, realize stretch forming of a curved surface piece with large curvature, enable stretch forming quality, improve material utilization rate, and reduce the manufacture cost of a stretch forming device. The stretch forming machine mainly comprises a machine frame (1), and a rows of material stretching mechanisms (3) arranged in the left side of the machine frame (1) and the right side thereof respectively, and each row has a plurality of material stretching mechanisms (3); each material stretching mechanism comprises three hydraulic cylinders (2) which are hinged with each other, one of the hydraulic cylinder is arranged horizontally, one is arranged vertically, and the other one is arranged in an inclined manner; and each material holding mechanism (3) mainly comprises a bracket (10), material holding plates (11), and a small-stroke single-action hydraulic cylinder (12).
Description
Technical field:
Plate stretch-forming machine is the plastic working equipment that is used for the plate accessory three-dimensional curve generation, belongs to mechanical engineering field.
Background technology:
Stretching machine, stretching former is to make sheet material produce the equipment of stretcher strain, is mainly used in the shaping of hyperbolicity skin part in the aerospace field.Traditional stretching machine, stretching former generally is divided into horizontal stretching machine, stretching former and vertical stretching machine, stretching former.Ectonexine at sheet material when pull-shaped produces tension and stretching strain along draw direction, thereby reduces the springback capacity of workpiece.Under the cooperation of pull-shaped mould, make the various piece basic synchronization stretching longitudinally of sheet material behind the clamp clamping sheet material of tradition stretching machine, stretching former, the tension of part and stretching strain distribute obviously inhomogeneously when shaping hyperbolicity covering spare, and easily mould, drawing crack or forming defects such as wrinkling are not pasted in generation.In order to eliminate defective, pull-shapedly often need bigger process allowance with blank, the utilization rate of material is reduced.In addition, stretching machine, stretching former commonly used has at present adopted the multiaxis hydraulic servo control system, causes its manufacturing expense costliness.
Summary of the invention:
It is more even that the purpose of this utility model is to make when pull-shaped the tension of sheet material and stretching strain to distribute, and realizes the pull-shaped of deep camber three-dimension curved surface spare, improves pull-shaped forming quality, improves stock utilization, and the manufacturing cost of reduction stretching machine, stretching former.
Above-mentioned purpose of the present utility model is achieved in that accompanying drawings is as follows:
A kind of plate stretch-forming machine, mainly by frame 1, draw material mechanism and feeding clip mechanism 3 to form, describedly draw material mechanism and feeding clip mechanism 3 to adopt a plurality of compositions one to arrange to be arranged in frame 1 left and right sides respectively; Described drawing expects that mechanism is made up of 2～3 hydraulic cylinders 2, and an end of hydraulic cylinder 2 connects with frame 1 activity respectively, and the other end connects with feeding clip mechanism 3 activities jointly.
Described drawing expects that mechanism is made up of three hydraulic cylinders 2, and wherein, a hydraulic cylinder 2 is horizontally disposed, and a hydraulic cylinder 2 arranges that vertically another one hydraulic cylinder 2 is in tilted layout.
Described drawing expects that mechanism is made up of two hydraulic cylinders 2, and wherein, a hydraulic cylinder 2 arranges that vertically another one hydraulic cylinder 2 is in tilted layout or is horizontally disposed.
Described hydraulic cylinder 2 one ends are respectively with the movable connection method of frame 1 and the common movable connection method employing with feeding clip mechanism 3 of the other end is hinged or universal joint connects.
Described feeding clip mechanism 3 mainly by the support 10 that is connected with the hydraulic cylinder that draws material mechanism, be contained in the material folding plate 11 on the support 10 and the little stroke single action hydraulic cylinder 12 of material folding plate 11 application of forces formed, described little stroke single action hydraulic cylinder 12 passes through the flexible member spring-return.
Described flexible member adopts helical spring or polyurethane rubber.
Described material folding plate 11 adopts plate flow-type structure or stings tight plate formula structure.
Described a plurality of feeding clip mechanism 3 that is arranged in frame 1 left and right sides is cascaded by the Bowden cable 13 that is contained in hydraulic cylinder 2 and feeding clip mechanism 3 connection places respectively.
The a plurality of material mechanisms and feeding clip mechanism and a plurality of distances of expecting between mechanism and the feeding clip mechanism of drawing of frame 1 right side one row of drawing of described frame 1 left side, one row are adjustable.
Plate stretch-forming machine of the present utility model, mainly by frame 1 and frame 1 each side a plurality of material mechanism and the feeding clip mechanisms 3 of drawing of a row forms. draw and expect that mechanism is hinged by three hydraulic cylinders 2 and form, wherein, one is horizontally disposed, arrange that vertically another one is in tilted layout for one; Therefore, each side a plurality of material mechanisms of drawing of a row are respectively by a plurality of horizontally disposed hydraulic cylinders 2 of a row, the hydraulic cylinder 2 of a plurality of vertical layouts of one row and a plurality of hydraulic cylinders that are in tilted layout of a row 2 are formed. and hinged with the frame 1 respectively or universal joint of an end of hydraulic cylinder 2 connects, an other end common with feeding clip mechanism 3 hinged or universal joint connections. by different hydraulic couplings is set, can adjust the stroke of each hydraulic cylinder 2, can also adjust and the hydraulic cylinder 2 of feeding clip mechanism 3 hinged places between angle, thereby change the position and the pull-shaped direction of feeding clip mechanism 3. for the simplified control system structure, the hydraulic coupling of hydraulic cylinder 2 can divide into groups to control with action; Horizontally disposed all hydraulic cylinder 2 can be with a solenoid control, and about also can being divided into two groups, each is with a solenoid control; Vertically all hydraulic cylinder of arranging 2 and all hydraulic cylinder 2 that is in tilted layout can be divided into one group or two groups of controls equally respectively. when pull-shaped, use all or several feeding clip mechanisms 3 clamp sheet material 4, and by corresponding draw the material mechanism under the cooperation of pull-shaped mould 5 stretch forming sheet material 4. when pull-shaped, by adjusting the hydraulic coupling of hydraulic cylinder 2, though can obtain optimum stretch position and angle. hydraulic coupling is identical in the hydraulic cylinder 2 of same directive effect, but because the lateral cross section shape difference of mould 5, utilize law of minimum resistance, each feeding clip mechanism 3 produces different displacements along draw direction, each draws the stretching angle of material mechanism also can produce certain variation simultaneously, thereby make the distribution of pull-shaped tension and stretching strain more even. draw material mechanism also can form by two hydraulic cylinders 2, arrange that vertically another is in tilted layout or is horizontally disposed for one.
Technique effect: plate stretch-forming machine of the present utility model, compare with traditional stretching machine, stretching former, by level, vertically and the interaction of the three discharge opeing cylinder pressures that are in tilted layout, make the load path that is applied on the sheet material more reasonable, make the distribution of pull-shaped tension and stretching strain more even, improve pull-shaped forming quality, realize the pull-shaped of deep camber curved surface, reduce by pull-shaped process allowance, improve stock utilization.This machine has been abandoned the control system of traditional stretching machine, stretching former complexity, adopts simple in structure, cheap hydraulic system to come the distortion of Flexible Control sheet material, thereby the manufacturing cost of stretching machine, stretching former is significantly reduced.
Description of drawings:
Fig. 1 is the schematic diagram of stretching machine, stretching former, wherein:
Fig. 1 (a) is a front view;
Fig. 1 (b) is a vertical view.
Fig. 2 is the pull-shaped view that is used with vertical pull-shaped mould.
Fig. 3 is the pull-shaped view that is used with mild pull-shaped mould.
Fig. 4 is that the adjustable stretching machine, stretching former schematic diagram of distance between material mechanism and the feeding clip mechanism is drawn in the left and right sides.
Fig. 5 is the hinged schematic diagram of hydraulic cylinder and frame, wherein:
Fig. 5 (a) is a front view;
Fig. 5 (b) is the A-A cross sectional view of front view.
Fig. 6 is that hydraulic cylinder connects schematic diagram with the frame universal joint, wherein:
Fig. 6 (a) is a front view;
Fig. 6 (b) is the A-A cross sectional view of front view.
Fig. 7 is hydraulic cylinder and the hinged schematic diagram of frame that adopts thread connection.
Fig. 8 is the hinged schematic diagram of hydraulic cylinder and feeding clip mechanism, wherein:
Fig. 8 (a) is a front view;
Fig. 8 (b) is the A-A cross sectional view of front view.
Fig. 9 is that hydraulic cylinder connects schematic diagram with the feeding clip mechanism universal joint, wherein:
Fig. 9 (a) is a front view;
Fig. 9 (b) is the A-A cross sectional view of front view.
Figure 10 is the feeding clip mechanism schematic diagram, wherein:
Figure 10 (a) is a front view;
Figure 10 (b) is the right view of front view.
Figure 11 is the schematic diagram of plate flow-type material folding plate.
Figure 12 is a graphics of stinging tight plate formula material folding plate.
Figure 13 is the schematic diagram that installs flexible axle in hydraulic cylinder and feeding clip mechanism hinged place.
Wherein: 1. frame, 2. hydraulic cylinder, 3. feeding clip mechanism, 4. sheet material, 5. mould, 6. mould rack, 7. supporting seat, 8. bearing pin, 9. universal joint, 10. support, 11. material folding plates, 12. little stroke single action hydraulic cylinders, 13. Bowden cables, 14. holding screws, 15. flexible axle dops
The specific embodiment:
Further specify the particular content of the present utility model and the course of work below in conjunction with embodiment shown in the drawings.
Fig. 1 is the schematic diagram of stretching machine, stretching former, mainly by frame 1 and frame 1 each side five of rows draw material mechanism and feeding clip mechanism 3 to form.Draw material mechanism to be made up of three hydraulic cylinders 2, one horizontally disposed, arranges that vertically another one is in tilted layout for one.One end of hydraulic cylinder 2 is hinged with frame 1 respectively, and the other end is common and feeding clip mechanism 3 is hinged.By changing the hydraulic coupling of hydraulic cylinder 2, can change the stroke of hydraulic cylinder 2, also can change hydraulic cylinder 2 angle each other, thereby change the position and the pull-shaped direction of feeding clip mechanism 3.Level, vertically or the hydraulic coupling of the hydraulic cylinder 2 that tilts can control for unit by row.When pull-shaped, control the position and the pull-shaped direction of each feeding clip mechanism 3 by the size of hydraulic coupling in the control hydraulic cylinder 2, thereby make sheet material 4 obtain optimum stretch position and angle.Fig. 2 is the pull-shaped view that is used with vertical pull-shaped mould.At first, apply pulling force by horizontally disposed 2 pairs of sheet materials 4 of a discharge opeing cylinder pressure and carry out prestretched; Secondly, make sheet material 4 paste mould gradually by vertical layout or the hydraulic cylinder 2 that is in tilted layout, and stretch forming under the cooperation of mould 5; At last, the 2 pairs of sheet materials 4 of hydraulic cylinder by vertical layout apply the vertically pull-shaped of pulling force realization sheet material 4.Fig. 3 is the pull-shaped view that is used with mild pull-shaped mould.At first, apply pulling force by horizontally disposed 2 pairs of sheet materials 4 of a discharge opeing cylinder pressure and carry out prestretched; Secondly, by the horizontally disposed shaping that makes sheet material 4 paste mould gradually with two discharge opeing cylinder pressures 2 that be in tilted layout and realize sheet material 4.At the mould 5 of various different curvature and different in width, can be by suitable design realizes the prestretched of sheet material 4 with control and finally is shaped to hydraulic cylinder 2 strokes.Fig. 4 is that the adjustable stretching machine, stretching former schematic diagram of distance between material mechanism and the feeding clip mechanism is drawn in the left and right sides, and the stretching machine, stretching former of this structure can be used with the very big mould 5 of change in size.After distance is adjusted, can use the self-locking mechanism that constitutes by hydraulic cylinder or securing member to pin the framework that draws material mechanism.
Fig. 5 is the hinged schematic diagram of hydraulic cylinder and frame, supporting seat 7 passes through screw attachment with frame 1, supporting seat 7 is linked together by bearing pin 8 and hydraulic cylinder 2, make hydraulic cylinder 2 obtain a direction rotational freedom like this. Fig. 6 is that hydraulic cylinder connects schematic diagram with the frame universal joint, when pull-shaped, sometimes need feeding clip mechanism 3 laterally to produce a spot of displacement along sheet material 4, this just needs hydraulic cylinder 2 to have the rotational freedom of both direction. in Fig. 6, supporting seat 7 passes through screw attachment with frame 1, supporting seat 7 connects universal joint 9 by bearing pin 8, universal joint 9 connects hydraulic cylinder 2 by another bearing pin 8 again, like this by the hinged rotational freedom that makes hydraulic cylinder 2 have both direction in two places. Fig. 7 is hydraulic cylinder and the hinged schematic diagram of frame that adopts thread connection, supporting seat 7 connects with respective threads hole on the frame 1, supporting seat 7 is linked together by bearing pin 8 and hydraulic cylinder 2, make hydraulic cylinder 2 obtain a direction rotational freedom like this. also can adopt threaded supporting seat 7 to realize that hydraulic cylinder 2 connects with the universal joint of frame 1. Fig. 8 is the hinged schematic diagram of hydraulic cylinder and feeding clip mechanism, three hydraulic cylinders 2 are connected on the feeding clip mechanism 3 jointly by bearing pin 8, can make feeding clip mechanism 3 have the rotational freedom of a direction in coupled position like this with hydraulic cylinder 2. Fig. 9 is that hydraulic cylinder connects schematic diagram with the universal joint of feeding clip mechanism, hydraulic cylinder 2 connects universal joint 9 by bearing pin 8, universal joint 9 connects feeding clip mechanism 3. when pull-shaped by another bearing pin 8 again, for make feeding clip mechanism 3 sheet material 4 slight displacement laterally arranged, also can make feeding clip mechanism 3 have the rotational freedom of both direction with hydraulic cylinder 2 coupled position; This purpose can realize by the connecting mode among Fig. 9. also can all adopt the universal joint connecting mode in hydraulic cylinder 2 and the connection place of frame 1 and the connection place of hydraulic cylinder 2 and feeding clip mechanism 3.
Figure 10 is the feeding clip mechanism schematic diagram, and feeding clip mechanism 3 mainly is made up of support 10, material folding plate 11 and little stroke single action hydraulic cylinder 12.In the time will stepping up sheet material 4, promote material folding plate 11 by little stroke single action hydraulic cylinder 12, material folding plate 11 steps up sheet material 4.In the time will unclamping sheet material, discharge the hydraulic oil in the little stroke single action hydraulic cylinder 12, make material folding plate 11 return to original position by flexible members such as helical spring or polyurethane rubbers.Figure 11 is the schematic diagram of plate flow-type material folding plate, adopts this form that plate is flowed in material folding plate 11, thereby effectively prevents sheet material 4 drawing cracks.Figure 12 is a graphics of stinging tight plate formula material folding plate, adopts this form can sting tight plate, and in pull-shaped process, plate can not flow in material folding plate 12.Figure 13 is the schematic diagram that installs Bowden cable in hydraulic cylinder and feeding clip mechanism hinged place, be used for installing Bowden cable 13 at the center of bearing pin 8 processing diameter greater than the through hole of Bowden cable 13 diameters, and by holding screw 14 flexible axle dops 15 being installed at the two ends of Bowden cable 13, to limit the string of Bowden cable 13 moving.Can realize the basic synchronization of each feeding clip mechanism 3 displacements by installing Bowden cable 13.
The course of work of bright stretching machine, stretching former for instance below.At first, the initial position of controlling each feeding clip mechanism by hydraulic coupling according to the size of the size of mould and the shaped sheet of wanting is so that clamping sheet material, and carries out prestretched as required; Then, control a horizontally disposed discharge opeing cylinder pressure, vertically a discharge opeing cylinder pressure of layout or the hydraulic coupling in the discharge opeing cylinder pressure that is in tilted layout by row for unit, thereby control the position and the draw direction of each feeding clip mechanism, so that make sheet material obtain best draw direction and amount of tension.In pull-shaped process,,, thereby make the tension of sheet material and stretching strain distribute more even because the difference of mould lateral cross section shape can make sheet material obtain optimum stretch direction and amount of tension though the hydraulic coupling in every discharge opeing cylinder pressure is identical.
Stretching machine, stretching former of the present utility model has been abandoned the control system of traditional stretching machine, stretching former complexity, adopt reasonable structural design more, make pull-shaped tension and stretching strain distribute more even, realize the pull-shaped of deep camber curved-surface piece, improve pull-shaped quality, improve the utilization rate of material, and reduce the manufacturing cost of stretching machine, stretching former.
Claims (9)
1. plate stretch-forming machine, mainly by frame (1), each side a plurality of material mechanism and the feeding clip mechanisms (3) of drawing of a row are formed, it is characterized in that, described drawing expects that mechanism is made up of 2～3 hydraulic cylinders (2), one end of hydraulic cylinder (2) connects with frame (1) is movable respectively, and the other end connects with feeding clip mechanism (3) is movable jointly.
2. plate stretch-forming machine according to claim 1 is characterized in that, described drawing expects that mechanism is made up of three hydraulic cylinders (2), and wherein, a hydraulic cylinder (2) is horizontally disposed, and a hydraulic cylinder (2) arranges that vertically another one hydraulic cylinder (2) is in tilted layout.
3. plate stretch-forming machine according to claim 1 is characterized in that, described drawing expects that mechanism is made up of two hydraulic cylinders (2), and wherein, a hydraulic cylinder (2) arranges that vertically another one hydraulic cylinder (2) is in tilted layout or is horizontally disposed.
4. according to claim 1 or 2 or 3 described plate stretch-forming machines, it is characterized in that the movable connection method of described hydraulic cylinder (2) and frame (1) or adopt hinged with the movable connection method of feeding clip mechanism (3) or universal joint connects.
5. plate stretch-forming machine according to claim 1, it is characterized in that, described feeding clip mechanism (3) mainly by the support (10) that is connected with the hydraulic cylinder that draws material mechanism, be contained in the material folding plate (11) on the support (10) and the little stroke single action hydraulic cylinder (12) of material folding plate (11) application of force formed, described little stroke single action hydraulic cylinder (12) passes through the flexible member spring-return.
6. plate stretch-forming machine according to claim 5 is characterized in that, described flexible member adopts helical spring or polyurethane rubber.
7. plate stretch-forming machine according to claim 5 is characterized in that, described material folding plate (11) adopts plate flow-type structure or stings tight plate formula structure.
8. plate stretch-forming machine according to claim 1 is characterized in that, described a plurality of feeding clip mechanisms (3) that are arranged in frame (1) left and right sides are cascaded by the Bowden cable (13) that is contained in hydraulic cylinder (2) and feeding clip mechanism (3) connection place respectively.
9. plate stretch-forming machine according to claim 1 is characterized in that, a plurality of material mechanisms and feeding clip mechanism and a plurality of distances of expecting between mechanism and the feeding clip mechanism of drawing of frame (1) right side one row of drawing of described frame (1) left side one row are adjustable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200939387U CN201455086U (en) | 2009-07-03 | 2009-07-03 | Stretch forming machine for plates |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200939387U CN201455086U (en) | 2009-07-03 | 2009-07-03 | Stretch forming machine for plates |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201455086U true CN201455086U (en) | 2010-05-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200939387U Expired - Lifetime CN201455086U (en) | 2009-07-03 | 2009-07-03 | Stretch forming machine for plates |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201455086U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011041984A1 (en) * | 2009-10-09 | 2011-04-14 | 吉林大学 | Multiple clamp type stretching and forming machine |
| CN115870394A (en) * | 2022-12-29 | 2023-03-31 | 吉林大学 | Joint-like freedom degree controllable push-pull mechanism for flexible stretch forming machine |
-
2009
- 2009-07-03 CN CN2009200939387U patent/CN201455086U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011041984A1 (en) * | 2009-10-09 | 2011-04-14 | 吉林大学 | Multiple clamp type stretching and forming machine |
| US8943869B2 (en) | 2009-10-09 | 2015-02-03 | Jilin University | Multiple clamp type stretching and forming machine |
| CN115870394A (en) * | 2022-12-29 | 2023-03-31 | 吉林大学 | Joint-like freedom degree controllable push-pull mechanism for flexible stretch forming machine |
| CN115870394B (en) * | 2022-12-29 | 2023-10-24 | 吉林大学 | Joint-like degree-of-freedom controllable push-pull mechanism for flexible stretch forming machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100512 Effective date of abandoning: 20090703 |