CN206405246U - The curved surface stretch forming device of multipoint excitation control - Google Patents
The curved surface stretch forming device of multipoint excitation control Download PDFInfo
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- CN206405246U CN206405246U CN201720068489.5U CN201720068489U CN206405246U CN 206405246 U CN206405246 U CN 206405246U CN 201720068489 U CN201720068489 U CN 201720068489U CN 206405246 U CN206405246 U CN 206405246U
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- flexible
- belt
- control
- stretch forming
- loading control
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Abstract
The utility model provides the curved surface stretch forming device that a kind of multipoint excitation is controlled, the device is main by fuselage ring, die setting base and to be distributed in the Loading Control unit group of die setting base both sides and Loading Control auxiliary body constitutes, Loading Control unit group is made up of multiple Loading Control units, and Loading Control unit includes motion can the clamp of independent control, the adjustable flexible-belt of active length, the mobile sliding block that can be moved up and down, vertical leading screw and vertically movable controlled motor；Load in Holder Pressure for Sheet Metal Stretch Forming is applied by clamp, control the movement locus of multiple clamps in real time by multiple Loading Control units, realize that plate is brought into close contact with the real-time of pull-shaped die face, obtain optimal surface stretch forming effect and accurate stretch forming curved surface part；Using device profile surface part of the present utility model, the generation of various defects during curve generating can be avoided, and technique clout can be substantially reduced, material is saved.
Description
Technical field
The utility model is related to a kind of curved surface stretch forming device of multipoint excitation control, belongs to Metal Forming neck
Domain, it is adaptable to the stretch forming of large-scale three dimensional curved surface part.
Background technology
Stretch forming is the important manufacturing process of large-scale three dimensional curved surface part, aeronautical manufacture, bullet train, ship and
The fields such as modern architecture are widely used.Traditional stretch forming process mainly uses integral clamping, clamped clamping
The displacement of plate end experience is identical, and plate is not laterally with die face active deformation.Cross curvature is shaped than larger song
During face, in order to ensure that plate is fitted completely with mould, it usually needs sufficiently long hanging section, this results in the big of stock utilization
Big reduction.The utility model carries out discretization based on the integral clamping used to traditional stretch forming, uses multiple Loading Controls
Unit replaces integral clamping, and the clamp motion of each Loading Control unit can be with independent control, so as to realize multipoint excitation control
Curved surface stretch forming, can not only overcome some defective workmanships present in traditional stretch forming, can with shaping form compared with
For complicated curved-surface piece.
The content of the invention
The utility model provides a kind of curved surface stretch forming device of multipoint excitation control, and the displacement of Holder Pressure for Sheet Metal Stretch Forming is carried
Lotus is put on multiple Loading Control points at the left and right two ends of plate by multiple Loading Control units, each Loading Control point displacement
The size of load and direction are controlled in real time by Loading Control unit, make deformation optimization of the plate during stretch forming, real
Now it is brought into close contact with the real-time of pull-shaped die face, it is to avoid the generation of various defects during curve generating, obtains accurate draw
It is stretched into shape curved surface part.
Above-mentioned purpose of the present utility model is achieved through the following technical solutions, and is described with reference to the drawings as follows：
A kind of curved surface stretch forming device of multipoint excitation control, including fuselage ring, the mould in the middle part of fuselage ring
Tool mounting seat and Loading Control unit group and the Loading Control auxiliary body for being distributed in die setting base both sides, it is characterised in that：
Described fuselage ring includes two support bases and two spreaders, and the longitudinal cross-section of support base is in " L " font, including
The level board of one horizontal direction, one be located at level board one end vertical direction vertical plate and one be located at level board it is another
The short vertical plate of the vertical direction at end, two clamping supports are identical and are arranged symmetrically, and two spreaders pass through respective two ends respectively
Nut of installing be arranged between the vertical plate of two support bases, mould peace is installed with the short vertical plate of two support bases
Fill and pull-shaped mould is installed on seat, die setting base；
Described Loading Control unit group is on the inside of the vertical plate of support base, and Loading Control unit group is by multiple Loading Controls
Unit is constituted, and each Loading Control unit includes a motion can the clamp of independent control, the flexibility of control clamp motion
Band, one can move up and down mobile sliding block, a vertical leading screw and one vertical motion controlled motor；Each vertical leading screw is erected
The inner side of the straight vertical plate for being arranged in support base, each vertical leading screw and the vertically movable control being fixed on the inside of support base vertical plate
The output shaft of motor processed is fixedly connected, and sliding block can be moved along what vertical leading screw moved up and down by being provided with each vertical leading screw；
The top of level board of the described Loading Control auxiliary body in support base, Loading Control auxiliary body includes control
The flexible-belt control shaft of flexible strip length, can left and right move in the horizontal direction flexible-belt control axle bed, horizontal screw lead, guide pillar,
Horizontal movement controlled motor and flexible-belt controlled motor；Horizontal screw lead and two guide pillars are all arranged in parallel in support in the horizontal direction
Seat level board top and positioned at support base vertical plate and short vertical plate between, horizontal screw lead is vertical with being fixed on support base
The output shaft of the horizontal movement controlled motor of plate Basolateral is fixedly connected；Being provided with horizontal screw lead can be along horizontal screw lead and leading
The flexible-belt control axle bed of post movement, flexible-belt control shaft is arranged on flexible-belt control axle bed, flexible-belt control shaft and fixation
The output shaft for controlling the flexible-belt controlled motor on axle bed in flexible-belt is fixedly connected, and flexible-belt controlled motor drives flexible-belt control
Axle processed is rotated on flexible-belt control axle bed around itself axle.
Further technical scheme includes：
Multiple Loading Control units in described Loading Control unit group are on the inside of the vertical plate of support base, and along vertical
In Holder Pressure for Sheet Metal Stretch Forming direction, horizontal cross is uniformly distributed, and the clamp in adjacent Loading Control unit passes through a flexible connection
Body is flexibly connected together, and flexible connection body is made up of a rubber tube and the connecting seat positioned at rubber tube two ends.
Flexible-belt in described Loading Control unit is the resistance to flexible cable structure for drawing, not extending, and flexible-belt is bypassed after clamp
The rotating shaft in portion, its one end is fixed on mobile sliding block, and the other end is fixed in flexible-belt control shaft, passes through flexible-belt controlled motor
Flexible-belt control shaft is controlled to rotate the active length that winding flexible-belt controls flexible-belt.
Described flexible-belt is pierce tap or cable wire.
The beneficial effects of the utility model：
The utility model replaces the integral clamping in traditional stretch forming technique using Loading Control unit group, forms many
The curved surface stretch forming device of point control.Traditional stretch forming is as a result of integral clamping, and clamp can only be by same loading
Curved surface stretch forming is realized in track motion.And be to use multiple Loading Control units the characteristics of the utility model device, each loading
Control of the control unit to load(ing) point displacement is that separate, different Loading Control point can realize different loading motion rails
Mark.Based on the optimization design to stretch forming process load path, using the utility model device by being moved to each clamp
Control, can make Holder Pressure for Sheet Metal Stretch Forming process optimization in real time, thus during avoiding curve generating various defects generation, obtain high
The curved surface part of quality, and technique clout can be substantially reduced, save material；In addition, the multipoint excitation control that the utility model is provided
The curved surface stretch forming device of system is simple in construction, manufacturing cost is low.
Brief description of the drawings
Fig. 1 is the curved surface stretch forming device overall structure diagram of the multipoint excitation control of stretch forming working condition；
Fig. 2 is the curved surface stretch forming device front view of the multipoint excitation control of stretch forming working condition；
Fig. 3 is Loading Control cellular construction figure；
Fig. 4 is clamp position distribution schematic diagram during stretch forming；
Fig. 5 is clamp flexible connection schematic diagram；
Fig. 6 is three kinds of control method schematic diagrames of clamp motion during stretch forming,
Fig. 6 a are the method signals for controlling clamp to move with the movement of flexible-belt control shaft by the movement of mobile sliding block
Figure；
Fig. 6 b are to control the method schematic diagram that clamp is moved with flexible-belt length change by the movement of mobile sliding block；
Fig. 6 c are only to control the method schematic diagram that clamp is moved by the movement of mobile sliding block.
In figure：1. Loading Control unit, 2. die setting bases, 3. pull-shaped moulds, 4. support bases, 5. spreaders, 6. clamps, 7.
Flexible-belt, 8. movement sliding blocks, 9. vertical leading screws, 10. vertically movable controlled motors, 11. flexible-belt control shafts, 12. horizontal screw leads,
13. guide pillar, 14. horizontal movement controlled motors, 15. flexible-belt controlled motors, 16. flexible-belts control axle bed, 17. install nut,
18. plate, 19. flexible connection bodies, 20. rubber tubes, 21. connecting seats
Embodiment
Structure of the present utility model, the course of work and implementation step are further illustrated below in conjunction with the accompanying drawings.
As shown in Figure 1 and Figure 2, the curved surface stretch forming device of multipoint excitation control of the present utility model is main by fuselage frame
Frame, die setting base 2 and the Loading Control unit group and Loading Control auxiliary body composition for being distributed in die setting base both sides.
Fuselage ring includes two support bases 4 and two spreaders 5, and the longitudinal cross-section of support base 4 is in " L " font, including one
The level board of individual horizontal direction, one be located at level board one end vertical direction vertical plate and one be located at the level board other end
Vertical direction short vertical plate；Two structures of support base 4 are identical and are arranged symmetrically, and two spreaders 5 pass through respective two ends respectively
Nut 17 of installing be arranged between the vertical plate of two support bases 4.Mould is installed with the short vertical plate of two support bases 4
Has mounting seat 2, during Holder Pressure for Sheet Metal Stretch Forming, pull-shaped mould 3 is placed on die setting base 2.Wherein, pull-shaped mould 3 can be according to need
The shape for the plate to be shaped is changed.Two support bases 4 are connected with support base during ensureing stretch forming by spreader 5 by foot
Enough rigidity and intensity.The position of nut 17 is installed by adjusting, thus it is possible to vary distance between left and right two support bases, with suitable
The curved surface part of different in width is answered to shape needs.
As shown in figure 3, Loading Control unit group is on the inside of the vertical plate of support base 4, and in present embodiment, each support base
Loading Control unit group on 4 is made up of 7 Loading Control units 1, and each Loading Control unit 1 includes a motion can be independent
The clamp 6 of control, the flexible-belt 7 of control clamp motion, mobile sliding block 8, the vertical leading screw 9 that can move up and down
And a vertically movable controlled motor 10；Each vertical leading screw 9 is arranged vertically at the inner side of the vertical plate of support base 4, each perpendicular
The output shaft of vertically movable controlled motor 10 of the raw silk rings thick stick 9 with being fixed on the inside of the vertical plate of support base 4 is fixedly connected, each vertical
Sliding block 8 can be moved along what vertical leading screw 9 moved up and down by being provided with leading screw 9.Driven by vertically movable controlled motor 10 along perpendicular
Raw silk rings thick stick 9 is rotated, and can drive the up and down motion of mobile sliding block 8, so as to drive the motion of clamp 6.In Holder Pressure for Sheet Metal Stretch Forming process
In, plate 18 is clamped by each clamp 6 of the Loading Control unit group of both sides, and the movement locus of each clamp 6 is as where it
The independent control of Loading Control unit 1.
As shown in figure 1, Loading Control auxiliary body is in the top of the level board of support base 4, Loading Control auxiliary body bag
Include control the length of flexible-belt 7 flexible-belt control shaft 11, can along horizontal movement flexible-belt control axle bed 16, horizontal screw lead 12,
Guide pillar 13, horizontal movement controlled motor 14 and flexible-belt controlled motor 15；Horizontal screw lead 12 and two guide pillars 13 are all along level side
To the top for the level board for being arranged in parallel in support base 4 and between the vertical plate and short vertical plate of support base 4, horizontal screw lead
The output shaft of the 12 horizontal movement controlled motor 14 with being fixed on the vertical plate Basolateral of support base 4 is fixedly connected；Horizontal screw lead
The flexible-belt control axle bed 16 that can be moved horizontally along horizontal screw lead 12 and guide pillar 13 is installed, flexible-belt control shaft 11 is installed on 12
The output shaft for controlling the flexible-belt controlled motor 15 on axle bed 16 and with being fixed on flexible-belt control axle bed 16 in flexible-belt is consolidated
Fixed connection；Flexible-belt controlled motor 15 can drive flexible-belt control shaft 11 to be rotated on flexible-belt control axle bed 16 around itself axle,
Drive horizontal screw lead 12 to rotate by horizontal movement controlled motor 14, flexible-belt control shaft 11 can be driven to control axle bed in flexible-belt
Moved horizontally on 16 along horizontal screw lead 12 and guide pillar 13.
Flexible-belt 7 in Loading Control unit 1 is the resistance to flexible cable structure for drawing, not extending, and is pierce tap or cable wire, flexible-belt
7 bypass the rotating shaft at the rear portion of clamp 6, and its one end is fixed on mobile sliding block 8, and the other end is fixed in flexible-belt control shaft 11, lead to
Cross the control flexible-belt of flexible-belt controlled motor 15 control shaft 11 and rotate the active length that winding flexible-belt 7 controls flexible-belt 7.
As shown in figure 4, Loading Control unit 1, edge is uniformly distributed perpendicular to the stretch forming direction transverse horizontal of plate 18, plate
When expecting stretch forming, by the clamps 6 of multiple Loading Control units 1 the left and right two ends of plate 18 multiple Loading Control points
On apply displacement to plate, each point applies the size and Orientation of displacement by each clamp independent control, by reasonable design simultaneously
The movement locus of each clamp is controlled in real time, and plate 18 can be achieved and is brought into close contact with the real-time of the pull-shaped type face of mould 3, makes stretch forming
Process optimization, obtains accurate stretch forming curved surface part.
As shown in Figure 4, Figure 5, the clamp 6 in adjacent Loading Control unit 1 is connected by flexible connection body 19, and flexibility is even
Junctor 19 is made up of the rubber tube 20 of Free Transform with the seat 21 that is rigidly connected.After flexible connection, Loading Control unit group
Each clamp 6 is linked to be a flexible entirety, is easy to the plate of stretch forming start time to clamp with installing, and prevent because of clamp
Weight causes plate 18 to produce unnecessary deformation, on the other hand, still can self-movement within the specific limits between each clamp 6.
The course of work of the curved surface stretch forming device of multipoint excitation control is exemplified below.
As traditional stretch forming, it is also required to open in stretch forming using curved surface stretch forming device of the present utility model
Before beginning, required load path is first designed, is directed to according to plate size, profile surface shape, material properties of plate etc.
Rational load path is designed at each load(ing) point control point, determines the loading movement locus of each clamp, on this basis, is utilized
Device of the present utility model carries out curved surface part stretch forming.
First, according to the size of plate 18 and pull-shaped mould 3, the mobile sliding block 8 of adjustment, flexible-belt control shaft 11 are opened in shaping
Begin the position at moment and the length of flexible-belt 7, each clamp 6 is clamped plate on the initial position after plate deformation induced by gravity
(position as shown in dotted line in Fig. 6 a, Fig. 6 b, Fig. 6 c), then according to the loading track of designed each Loading Control point, leads to
The motion that each Loading Control unit 1 controls each clamp 6 is crossed, curved surface stretch forming is carried out.
The motion of clamp 6 by move sliding block 8 move up and down and moving left and right for flexible-belt control shaft 11 determines, it is mobile
The movement of sliding block 8 and flexible-belt control shaft 11 is controlled by vertically movable controlled motor 10 with horizontal movement controlled motor 14,
It can change to adjust by the length of flexible-belt 7, the motion of clamp 6 can be controlled by three kinds of modes：
Mode one (as shown in Figure 6 a)：During stretch forming, the length of flexible-belt 7 keeps constant.By transporting vertically
Dynamic controlled motor 10 drives vertical leading screw 9 to rotate to make to move sliding block 8 and move up and down, and passes through horizontal movement controlled motor 14 and drives water
Flat leading screw 12, which is rotated, moves left and right flexible-belt control shaft 11, and the motion of clamp 6 is by moving sliding block 8 and flexible-belt control shaft 10
Move to control simultaneously；
Mode two (as shown in Figure 6 b)：During stretch forming, the position of flexible-belt control shaft 11 is fixed.Pass through flexibility
Being rotated with the driving flexible-belt of controlled motor 15 control shaft 11 changes the length of flexible-belt 7, passes through vertically movable controlled motor 10
Driving vertical leading screw 9 to rotate makes to move moving up and down for sliding block 8, and clamp 6 moves the movement and flexible-belt 7 by mobile sliding block 8
Length change control；
Mode three (as fig. 6 c)：During stretch forming, the position of flexible-belt control shaft 11 is fixed, and flexible
Keep constant with 7 length.Vertical leading screw 9 is driven to rotate to make to move sliding block 8 and move up and down by vertically movable controlled motor 10,
The motion of clamp 6 is controlled by moving moving up and down for sliding block 8.
Claims (4)
1. the curved surface stretch forming device of multipoint excitation control, including fuselage ring, the mould installion in the middle part of fuselage ring
Seat (2) and Loading Control unit group and the Loading Control auxiliary body for being distributed in die setting base (2) both sides, it is characterised in that：
Described fuselage ring includes two support bases (4) and two spreaders (5), and the longitudinal cross-section of support base (4) is in " L " word
Shape, including a horizontal direction level board, one be located at level board one end vertical direction vertical plate and one be located at water
The short vertical plate of the vertical direction of the flat board other end, two support base (4) structures are identical and are arranged symmetrically, two spreaders (5) point
Be not arranged on by the installation nut (17) at respective two ends between the vertical plate of two support bases (4), two support bases (4) it is short
It is installed with vertical plate on die setting base (2), die setting base (2) and pull-shaped mould (3) is installed；
Described Loading Control unit group is on the inside of the vertical plate of support base (4), and Loading Control unit group is by multiple Loading Controls
Unit (1) is constituted, and each Loading Control unit (1) includes a motion can the clamp (6) of independent control, control clamp fortune
Dynamic flexible-belt (7), mobile sliding block (8), a vertical leading screw (9) and the vertically movable control electricity that can move up and down
Machine (10)；Each vertical leading screw (9) is arranged vertically at the inner side of the vertical plate of support base (4), and each vertical leading screw (9) is with fixing
The output shaft of vertically movable controlled motor (10) on the inside of support base (4) vertical plate is fixedly connected, on each vertical leading screw (9)
The mobile sliding block (8) that can be moved up and down along vertical leading screw (9) is installed；
Described Loading Control auxiliary body includes control in the top of the level board of support base (4), Loading Control auxiliary body
The flexible-belt control shaft (11) of flexible-belt (7) length, the flexible-belt that can be moved in the horizontal direction control axle bed (16), horizontal screw lead
(12), guide pillar (13), horizontal movement controlled motor (14) and flexible-belt controlled motor (15)；Horizontal screw lead (12) and two guide pillars
(13) top of the level board of support base (4) is all arranged in parallel in the horizontal direction and positioned at the vertical plate of support base (4) and short
Between vertical plate, horizontal screw lead (12) and the horizontal movement controlled motor (14) for being fixed on support base (4) vertical plate Basolateral
Output shaft be fixedly connected；Being provided with horizontal screw lead (12) can be along horizontal screw lead (12) and the mobile flexible-belt control of guide pillar (13)
Axle bed (16) processed, flexible-belt control shaft (11) is arranged on flexible-belt control axle bed (16), and flexible-belt control shaft (11) is with fixing
The output shaft for controlling the flexible-belt controlled motor (15) on axle bed (16) in flexible-belt is fixedly connected, flexible-belt controlled motor (15)
Flexible-belt control shaft (11) is driven to be rotated on flexible-belt control axle bed (16) around itself axle.
2. the curved surface stretch forming device of multipoint excitation control according to claim 1, it is characterised in that described loading
Multiple Loading Control units (1) in control unit group are drawn on the inside of the vertical plate of support base (4), and along perpendicular to plate (18)
It is stretched into shape direction horizontal cross to be uniformly distributed, the clamp (6) in adjacent Loading Control unit (1) passes through a flexible connection body
(19) together, flexible connection body (19) is by a rubber tube (20) and the connecting seat positioned at rubber tube (20) two ends for flexible connection
(21) constitute.
3. the curved surface stretch forming device of multipoint excitation control according to claim 1, it is characterised in that described loading
Flexible-belt (7) in control unit (1) is the resistance to flexible cable structure for drawing, not extending, and flexible-belt (7) bypasses turning for clamp (6) rear portion
Axle, its one end is fixed on mobile sliding block (8), and the other end is fixed in flexible-belt control shaft (11), and electricity is controlled by flexible-belt
Machine (15) control flexible-belt control shaft (11) rotates the active length of winding flexible-belt (7) control flexible-belt (7).
4. the curved surface stretch forming device of multipoint excitation control according to claim 3, it is characterised in that described flexibility
Band (7) is pierce tap or cable wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720068489.5U CN206405246U (en) | 2017-01-18 | 2017-01-18 | The curved surface stretch forming device of multipoint excitation control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720068489.5U CN206405246U (en) | 2017-01-18 | 2017-01-18 | The curved surface stretch forming device of multipoint excitation control |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206405246U true CN206405246U (en) | 2017-08-15 |
Family
ID=59557304
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720068489.5U Withdrawn - After Issue CN206405246U (en) | 2017-01-18 | 2017-01-18 | The curved surface stretch forming device of multipoint excitation control |
Country Status (1)
| Country | Link |
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| CN (1) | CN206405246U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106825183A (en) * | 2017-01-18 | 2017-06-13 | 吉林大学 | The curved surface stretch forming device of multipoint excitation control |
| CN108746332A (en) * | 2018-07-27 | 2018-11-06 | 吉林大学 | A kind of tension and compression composite board stretch former |
| CN110238251A (en) * | 2019-05-09 | 2019-09-17 | 广西艾盛创制科技有限公司 | A kind of modularization aluminum profile bending die and pressing bend method |
| SE2151324A1 (en) * | 2021-10-29 | 2023-04-11 | Modvion Ab | Press for producing a curved laminated veneer lumber module comprising a pressure distribution unit |
| SE2151332A1 (en) * | 2021-10-29 | 2023-04-11 | Modvion Ab | Pulling system and press for producing a curved laminated veneer lumber module |
| SE2151326A1 (en) * | 2021-10-29 | 2023-04-11 | Modvion Ab | Press and method for producing a curved laminated veneer lumber module |
-
2017
- 2017-01-18 CN CN201720068489.5U patent/CN206405246U/en not_active Withdrawn - After Issue
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106825183A (en) * | 2017-01-18 | 2017-06-13 | 吉林大学 | The curved surface stretch forming device of multipoint excitation control |
| CN108746332A (en) * | 2018-07-27 | 2018-11-06 | 吉林大学 | A kind of tension and compression composite board stretch former |
| CN110238251A (en) * | 2019-05-09 | 2019-09-17 | 广西艾盛创制科技有限公司 | A kind of modularization aluminum profile bending die and pressing bend method |
| SE2151324A1 (en) * | 2021-10-29 | 2023-04-11 | Modvion Ab | Press for producing a curved laminated veneer lumber module comprising a pressure distribution unit |
| SE545137C2 (en) * | 2021-10-29 | 2023-04-11 | Modvion Ab | Press for producing a curved laminated veneer lumber module comprising a pressure distribution unit |
| SE2151332A1 (en) * | 2021-10-29 | 2023-04-11 | Modvion Ab | Pulling system and press for producing a curved laminated veneer lumber module |
| SE2151326A1 (en) * | 2021-10-29 | 2023-04-11 | Modvion Ab | Press and method for producing a curved laminated veneer lumber module |
| SE545140C2 (en) * | 2021-10-29 | 2023-04-11 | Modvion Ab | Press and method for producing a curved laminated veneer lumber module |
| SE545139C2 (en) * | 2021-10-29 | 2023-04-11 | Modvion Ab | Pulling system and press for producing a curved laminated veneer lumber module |
| WO2023075669A1 (en) * | 2021-10-29 | 2023-05-04 | Modvion Ab | Press for producing a curved laminated veneer lumber module comprising a pressure distribution unit |
| WO2023075671A1 (en) * | 2021-10-29 | 2023-05-04 | Modvion Ab | Press and method for producing a curved laminated veneer lumber module |
| WO2023075670A1 (en) * | 2021-10-29 | 2023-05-04 | Modvion Ab | Pulling system and press for producing a curved laminated veneer lumber module |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170815 Effective date of abandoning: 20180810 |