CN112720966A

CN112720966A - Curved surface construction device, curved surface construction apparatus, and curved surface construction method

Info

Publication number: CN112720966A
Application number: CN202011498193.XA
Authority: CN
Inventors: 俞红祥; 黄少俯; 庞伟
Original assignee: Hangzhou Dedi Intelligent Technology Co ltd
Current assignee: Hangzhou Dedi Intelligent Technology Co ltd
Priority date: 2020-12-17
Filing date: 2020-12-17
Publication date: 2021-04-30
Anticipated expiration: 2040-12-17
Also published as: CN112720966B

Abstract

The invention relates to a curved surface construction device, curved surface construction equipment and a curved surface construction method. The curved surface construction device includes: a frame (1); a base (2), the base (2) being disposed on the frame (1) and having a plurality of mounting holes; the rod array (3) is composed of a plurality of rods (31) which are arranged in an array, each rod (31) correspondingly penetrates through one mounting hole, and the height of each rod (31) extending out of the mounting hole can be adjusted; an actuating mechanism (4), the actuating mechanism (4) being placed on the frame (1) and having an actuating head (44) capable of forming a driving connection with each rod (31) of the rod array (3); a film covering unit (6), the film covering unit (6) being configured to cover the array of rods (3) with a film (61). According to the technical scheme provided by the invention, the curved surface shape can be reconfigured according to the requirement, the material is recycled, and the method can be applied to a digital rapid prototyping technology.

Description

Curved surface construction device, curved surface construction apparatus, and curved surface construction method

Technical Field

The invention relates to the technical field of digital entity curved surface construction, in particular to a curved surface construction device, curved surface construction equipment and a curved surface construction method.

Background

The curved surface is one of basic structural elements for constructing physical entities and forming functions, and is widely applied to production and life, such as optical elements, delivery vehicles, flow channel pipelines, building outer walls, artistic sculptures, food molds and the like. One of the curved surface construction processes is a template casting process, namely, a solid curved surface part finished product is manufactured in batches through the steps of casting, curing, drawing and the like by means of a curved surface template which is manufactured at one time. According to different materials for manufacturing the template, the template pouring can be divided into metal template pouring, sand mold pouring, wooden template pouring, polymer template pouring and the like. In recent years, a large-size polymer melt extrusion molding (FFF) technology has also appeared, and rapid molding from a complex three-dimensional model to a medium-and high-precision three-dimensional entity can be realized. It should be noted that, in the application of customized pouring of medium and large sizes, for a curved surface template, there are fundamental limitations that the effective lifetime is short, and even the one-time use is possible, which not only results in the high total cost of the solid curved surface pouring formation, but also results in a series of subsequent problems of environmental protection disposal, recycling and the like.

Accordingly, there is a need in the industry for a solid surface construction apparatus and method that allows for the rapid digital construction of template surfaces and the reconfiguration of the surface shape after casting for recycling.

Disclosure of Invention

Accordingly, a curved surface construction device, a curved surface construction apparatus, and a curved surface construction method are provided, which can reconfigure a curved surface shape as needed, realize recycling of materials, and can be applied to a digital rapid prototyping technique.

A curved surface construction device comprising: a frame; a base disposed on the frame and having a plurality of mounting holes; the rod array is composed of a plurality of rods arranged in an array, each rod correspondingly penetrates through one mounting hole, and the height of each rod extending out of the mounting hole can be adjusted; an actuation mechanism disposed on the frame and having an actuation head capable of forming a drive connection with each rod of the rod array; a film coating unit configured to coat a film to the rod array.

According to the curved surface constructing device provided by the embodiment, the extending height of each rod in the rod array is adjusted one by one through the actuating mechanism, so that all the rods of the rod array can be integrally spliced to present a curved surface radian corresponding to an expected curved surface configuration through different height differences to serve as a basis for constructing the expected curved surface configuration. The expected curved surface configuration can be stored in a computer in the form of curved surface data, and the curved surface constructing device can be combined in a digital rapid machining process to realize rapid and accurate adjustment of the height of each rod, so that the constructed curved surface radian is more in line with the expected curved surface configuration. Because the height of the rod extending out of the mounting hole is adjustable, the rod can be repeatedly configured to construct different curved surface configurations, the cost of curved surface casting forming is reduced, and the environment protection is facilitated.

In one embodiment, each of the rods is formed with a rod engaging portion at an end, and the actuator head has an actuator head engaging portion, wherein the rod engaging portion and the actuator head engaging portion are capable of forming a male-female mating driving connection.

According to this embodiment, the actuating head is engaged with the end of the rod in a male-female fashion, facilitating the movement of the driving rod to adjust the height at which the rod extends out of the mounting hole.

In one embodiment, each mounting hole of the base is configured as a threaded hole, each rod of the array of rods is configured as a threaded rod that fits into the threaded hole, one of the rod engagement portion and the actuation head engagement portion is configured as an axial projection, and the other of the rod engagement portion and the actuation head engagement portion is configured as an axial recess.

According to this embodiment, a simple and easy to implement configuration of the height-repeatedly adjustable rod is provided. The axial protrusion is embedded into the axial concave part, and the screw rod can be driven to rotate in the threaded hole and move up and down through the movement of the actuating head, so that the height of the rod extending out of the mounting hole can be adjusted.

In one embodiment, the actuation mechanism comprises: a first motion assembly mounted on the frame and configured to be movable in a plane parallel to a surface of the base; a second motion assembly mounted on the first motion assembly and configured to be movable in a direction perpendicular to the plane; the rotating shaft is arranged on the second motion assembly and can rotate around the axis of the rotating shaft; wherein the actuation head is mounted on the rotating shaft.

In this embodiment, the first motion assembly and the second motion assembly can drive the actuator head to move in three dimensions (X-axis, Y-axis, Z-axis), and the rotation shaft can drive the actuator head to rotate, so that the actuator head can drive the rod to rotate in the threaded hole and realize the adjustment of the extension height.

In one embodiment, the film is a heat shrink film, and the curved surface construction apparatus further comprises a heating unit mounted on the frame. According to this embodiment, the heating unit can cause the heat shrink film to shrink by heat and to more closely surround the array of rods, even further surrounding the base.

In one embodiment, the curved surface structuring device further comprises a suction unit mounted on the frame, the suction unit being in fluid communication with each mounting hole at a side of the base facing away from the array of rods. According to this embodiment, the suction unit can draw air out of the gap between the membrane and the array of rods, causing the membrane to abut closely against the curved profile of the end configuration of the array of rods, thereby obtaining a smooth transition of the curved profile.

A curved surface construction apparatus comprising: a curved surface constructing device, which is the curved surface constructing device; the controller is in communication connection or electric connection with the actuating mechanism and controls the actuating mechanism to drive each rod to move, and the controller is in communication connection or electric connection with the film covering unit and controls the film covering unit to cover the film on the rod array. According to the embodiment, the controller can pre-store curved surface data defining a curved surface profile, and the controller controls the actuating head of the actuating mechanism to adjust the extending height of the corresponding rod based on the curved surface data, so that the end part of the rod array integrally forms a curved surface radian matched with the curved surface profile. By means of the controller to control the actuating mechanism and the film covering unit, digital rapid processing can be achieved.

A method of curved surface construction comprising: acquiring curved surface data, wherein the curved surface data defines a curved surface outline; based on the curved surface data, the height of each rod in the rod array of the curved surface construction device, which extends out of the mounting hole of the base, is adjusted one by utilizing an actuating mechanism of the curved surface construction device, so that the end parts of all the rods in the rod array together construct a curved surface radian corresponding to the curved surface profile; wrapping a membrane over the rod array; and fitting the film to the end parts of all the rods in the rod array to construct the curved profile.

In one embodiment, conforming the membrane to the ends of all of the rods in the array of rods comprises: the suction unit of the curved surface construction apparatus is used to draw air from the mounting holes at a side of the base facing away from the array of rods to cause the membrane to adhere to the ends of the rods.

In one embodiment, wrapping a membrane over the array of rods comprises: the film covering unit of the curved surface construction device covers the film to the rod array and the base, and the film is a heat-shrinkable film; the heating unit of the curved configuration device heats the film, causing the film to shrink under heat and to surround the array of rods and the base.

Drawings

FIG. 1 is a schematic view of a curved surface construction apparatus according to an embodiment of the present invention;

FIG. 2 is an enlarged view of FIG. 1 at A;

FIG. 3 is an enlarged view of FIG. 1 at B;

FIG. 4 is a schematic diagram of control signal connections for a curved surface construction apparatus according to an embodiment of the present invention;

FIGS. 5A to 5F are schematic views illustrating the curvature of a curved surface to be constructed in the curved surface constructing method according to the embodiment of the present invention;

fig. 6A to 6E are schematic views of a coating film in a curved surface structuring method according to an embodiment of the present invention.

Description of the element reference numerals

1. A frame; 2. a base; 21. a pipeline; 3. an array of rods; 31. a rod; 32. a lever engagement portion; 4. an actuation mechanism; 41. a first motion assembly; 42. a second motion assembly; 43. a rotating shaft; 44. an actuation head; 441. an actuation head engagement portion; 5. a suction unit; 6. a film covering unit; 61. a film; 62. swinging arms; 63. a tool head; 64. a cavity; 7. a heating unit; 800. and a controller.

The present invention is described in further detail with reference to the drawings and the detailed description.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and the detailed description. It should be understood that the detailed description and specific examples, while indicating the scope of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.

It will be understood that when an element is referred to as being "mounted on" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.

Fig. 1 shows a schematic view of a curved surface structuring apparatus according to the present invention. As shown, the curved surface construction device comprises a frame 1, a base 2 mounted on the rigid frame 1, an adjustable array of rods 3 arranged on the base 2, an actuating mechanism 4 driving each rod 31 of the array of rods 3 to adjust, a suction unit 5 mounted on the frame 1 and a film covering unit 6 covering the film 61 to the adjusted array of rods 3.

In the illustrated embodiment, the base 2 is formed with a plurality of mounting holes, each of which is pierced with a rod 31 axially movable to adjust the height of the protrusion of the mounting hole. A plurality of rods 31 are arranged in an array on the base 2. In one embodiment, the axis of the mounting hole is perpendicular to the bottom plate of the frame 1. In another embodiment, the plurality of mounting holes are uniformly arranged on the base 2 in an equal row pitch and an equal column pitch. In yet another embodiment, the hole diameter and hole depth of the mounting hole on the base 2 are the same.

As shown in fig. 1 and 3, the rod 31 may be a screw rod having an external thread, and accordingly, the peripheral wall of the mounting hole is formed with an internal thread adapted to the external thread so that the rod 31 can move up and down in the corresponding mounting hole to enable adjustment of the height of the protrusion out of the mounting hole. In one embodiment, the length of each rod 31 in the rod array 3 is the same, and the length of the external thread of each rod 31 may also be the same. The top of the rod 31 is formed with a rod engaging portion 32 configured as an axial recess, the rod engaging portion 32 being hexagonal in cross-section for cooperation with an actuating mechanism 4 to be described in detail later.

The actuating mechanism 4 comprises a first kinematic assembly 41 mounted on the frame 1 and a second kinematic assembly 42 mounted on the first kinematic assembly 41. In the illustrated embodiment, the first motion assembly 41 is configured as an XY servo stage and the second motion assembly 42 is configured as a Z-axis module. The ZY servo stage can drive the Z-axis module to move and position in a plane (XY plane) parallel to the surface of the base 2, and the Z-axis module can drive the rotation shaft 43 mounted thereon to move and position in a direction (Z-axis direction) perpendicular to the above-mentioned plane, and the rotation shaft 43 itself can rotate (clockwise, counterclockwise) and position around its central axis. In this way, the actuating head 44 mounted on the rotating shaft 43 can be moved in X, Y, Z three dimensions under the drive of the actuating mechanism 4 to approach the rod 31 to be height-adjusted, and the rotating movement of the rotating shaft 43 drives the actuating head 44 to screw the rod 31 to adjust the protruding height of the rod 31 in the corresponding mounting hole. As shown in fig. 2, the actuator head 44 is formed at an end thereof with an actuator head engagement portion 441 configured to axially project, and the cross section of the actuator head engagement portion 441 is hexagonal corresponding to the cross section of the rod engagement portion 32. By inserting the actuator head engaging portion 441 of the actuator head 44 into the rod engaging portion 32 of the rod 31, the rod 31 can be driven to rotate in the mounting hole.

In other embodiments, the rod engaging portion 32 of the rod 31 may be configured as an axial protrusion, and the actuating head engaging portion 441 of the actuating head 44 may be configured as an axial recess, so that the rod 31 may be driven to rotate by a concave-convex fit. In other embodiments, actuation head engagement portion 441 of actuation head 44 may also be configured as a clamping jaw, or other configuration suitable for positioning with rod engagement portion 32 of rod 31 to drive rotation thereof.

Although only a screw and threaded bore configuration of the rod and mounting bore is shown in the figures, as well as an XY servo stage and Z-axis modular type of actuation mechanism, those skilled in the art will appreciate that other configurations that enable movement of the rod along the mounting bore to adjust its extension height may also be incorporated into the present inventive concept. For example, in one embodiment, not shown, the actuating mechanism is configured as a piston cylinder, while the rod is configured as a rod member, e.g., a piston rod, connected to the piston cylinder, and a shut-off valve is provided on the line between the piston cylinder and the fluid supply. When the rod reaches a predetermined extension height, the shut-off valve is opened to lock the rod at the desired extension height. In addition, the curved surface construction device of the invention can also adopt other mechanisms capable of realizing linear extension and retraction instead of the screw rod and the actuating mechanism.

In the illustrated embodiment, a suction unit 5, for example, a vacuum pump, is provided on the bottom plate of the frame 1, the suction unit 5 being in fluid communication with an exhaust port formed on the base 2 through a pipe 21, which exhaust port in turn communicates with a mounting hole arranged on the base 2, so that the suction unit 5 can suck gas from the mounting hole on the side of the base 2 facing away from the rod array 3.

In the illustrated embodiment, the frame 1 is provided with a film covering unit 6, and the film covering unit 6 can cover the film 61 from top to bottom of the rod array 3 together with the base 2. In one embodiment, the film 61 is a heat shrink film and a heating unit 7, such as an infrared heating unit, is also provided on the side of the frame 1, which allows the film 61 to shrink by heat and tightly surround the rod array 3 and the base 2.

There is also provided, in accordance with an embodiment of the present invention, apparatus for curved surface construction, including the aforementioned curved surface construction device and controller. As shown in fig. 4, the controller 800 is connected or electrically connected to the first moving assembly 41, the second moving assembly 42, the rotating shaft 43, the suction unit 5, the film covering unit 6, and the heating unit 7, respectively, for example, by wireless signal communication. In one embodiment, the controller 800 may send communication signals or electrical signals to the first motion assembly 41(XY servo stage) to control the first motion assembly 41 to drive the second motion assembly 42(Z axis module) to translate and position within the XY plane. In one embodiment, the controller 800 sends a communication signal or an electrical signal to the second motion assembly 42 (Z-axis module), and controls the second motion assembly 42 to drive the rotation shaft 43 to actuate the head 44 to move up and down and position. In one embodiment, the controller 800 sends a communication signal or an electrical signal to the rotating shaft 43, and controls the rotating shaft 43 to drive the actuating head 44 to rotate each rod 31 in the rod array 3 clockwise or counterclockwise, so as to adjust the height of the rod 31 protruding out of the mounting hole. In one embodiment, the controller 800 sends a communication signal or an electric signal to the suction unit 5 (vacuum pump), and controls the suction unit 5 to suck gas from the mounting hole of the susceptor 2 through the exhaust port. In one embodiment, the controller 800 sends a communication or electrical signal to the film unit 6, which controls the film unit 6 to wrap the rod array 3 along with the base 2, for example, with a heat shrink film, after the actuation head 44 completes the height configuration of the rod array 3. In one embodiment, the controller 800 sends a communication signal or an electric signal to the heating unit 7, and controls the heating unit 7 to radiate and heat the heat-shrinkable film after the film covering unit 6 covers the heat-shrinkable film, and cooperate with the suction unit 5 to suck air, so that the heat-shrinkable film is tightly attached to the surface of the rod array 3, thereby forming a smoothly-transiting curved profile.

The curved surface constructing method according to the present invention will be described in detail with reference to fig. 5A to 5F and fig. 6A to E. The curved surface constructing method uses the curved surface constructing apparatus.

The curved surface construction method comprises the following steps:

s1: surface data is acquired, the surface data defining a surface profile.

In one embodiment, the curved surface data may be pre-stored in the server or in the local computer.

In one embodiment, step S1 may be specifically described as: and acquiring curved surface data, and matching the XY coordinates of the curved surface data with the row-column coordinates of the rod array one by one so as to obtain the target height of each rod.

S2: based on the curved surface data, the height of each rod 31 in the rod array 3 protruding out of the mounting hole is adjusted one by the actuating mechanism 4, so that the ends of all the rods 31 in the rod array 3 together configure a curved surface arc corresponding to the curved surface profile (refer to fig. 5A to 5F).

In one embodiment, step S2 may be specifically described as:

s20: the first motion assembly 41 drives the second motion assembly 42 to translate in the XY plane such that the rotation axis 43 and the actuation head 44 are axially positioned directly above the 1 × 1 bar 31-11 of the bar array 3 in an n × n (row × column) array configuration (refer to fig. 5A);

in one embodiment, the controller issues a positioning command to the XY servo stage, which controls the XY servo stage to drive the rotation shaft to be positioned right above the 1 × 1 st rod 31-11.

S21: the second moving assembly 42 drives the rotating shaft 43 and the actuating head 44 to move downwards until the end of the actuating head 44 abuts against the top of the rod 31-11 (refer to fig. 5B);

in one embodiment, the controller issues a move down command to the Z-axis module, which controls the Z-axis module to drive the rotation shaft to move down until the actuator head engaging portion contacts the rod engaging portion.

S22: the second motion assembly 42 is switched to the moment mode, so that the rotating shaft 43 and the actuating head 44 move downwards continuously and press the rod 31-11, and the rotating shaft 43 drives the actuating head 44 to rotate clockwise (refer to fig. 5C);

in one embodiment, the controller issues a clockwise rotation command to the rotating shaft and a torque control command to the Z-axis module, which controls the Z-axis module to drive the rotating shaft and the actuating head to apply a constant downward pressure to the rod 31-11, and the rotating shaft rotates and the Z-axis module presses down to bring the actuating head joint and the rod joint of the rod 31-11 from a contact state into a tight coupling state, so that the rotating shaft drives the rod 31-11 to rotate clockwise and penetrate into the mounting hole of the base 2.

S23: the actuator head engagement portion 441 of the actuator head 44 is tightly coupled to the rod engagement portion 32 of the rod 31-11, and the rotation shaft 43 brings the actuator head 44 to rotate clockwise synchronously with the rod 31-11 (refer to fig. 5D);

s24: the rod 31-11 is continuously pressed into the mounting hole, so that the height of the rod extending out of the mounting hole is gradually reduced, the second motion assembly 42 drives the rotating shaft 43 to move downwards along with the actuating head 44 to follow the rod 31-11 until the position of the second motion assembly 42 indicates that the height of the rod 31-11 extending out of the mounting hole (namely the height of the top end of the rod 31-11) reaches the target height, and the second motion assembly 42 is positioned with the rotating shaft 43 (refer to fig. 5E);

in one embodiment, the height of the top of the rod 31-11 is continuously lowered and the controller performs a reading of the Z-axis module coordinate values and a conversion to the height of the top of the rod 31-11. When the rod 31-11 is lowered to the target height, the controller sends a positioning command to the Z-axis module and the rotating shaft, and the height setting of the rod 31-11 is completed.

S25: the second kinematic assembly 42 moves up to the safety height, and the configuration of the height of the rods 31-11 is completed (refer to fig. 5F);

in one embodiment, before the subsequent rod height setting, the controller first sends a lifting command to the Z-axis module to control the Z-axis module to be lifted to the safe height.

S26: the steps S20-S26 are repeated to sequentially arrange the heights of the 1 × 1 st rod 31-11 to the n × n th rod 31-nn in the rod array 3 one by one, so that the tops of all the rods 31 are spliced together to form a curved arc corresponding to the curved contour.

In one embodiment, the controller sends a positioning command to the XY servo stage to position the rotating shaft directly above the 1 × 2 rod 31-12, the controller controls the Z-axis module and the rotating shaft to repeat the operation on the rod 31-11 until the height of the top of the rod 31-12 reaches a target height, the controller sends a positioning command to the Z-axis module and the rotating shaft, and the height setting of the rod 31-12 is completed. And the steps of lifting the Z-axis module, repositioning the XY servo platform, descending the Z-axis module, pressing the Z-axis module and rotating the rotating shaft clockwise, and positioning the Z-axis module and the rotating shaft are repeatedly implemented until the height of the top of all the rods from 31-11 to 31-nn is set.

In one embodiment, all the bars 31 of the bar array 3 are restored to be at the initial height, i.e. the bars are at the maximum protruding height, before step S20 is performed.

S3: the film 61 is coated on the bar array 3, and the film 61 is attached to the end of the bar 31 in the bar array 3, thereby forming a curved profile (see fig. 6A to 6E).

In one embodiment, step S3 may be specifically described as:

s30: after the height configuration of the rod array 3 is completed to construct a curved surface radian, the swing arm 62 of the film coating unit 6 is deflected to drive the tool head 63 to swing horizontally from the side of the rigid frame 1 to a position right above the rod array 3 (refer to fig. 6A);

s31: the tool head 63 is rapidly lowered and positioned to the height corresponding to the initial position of the rod 31 in the rod array 3, and then the film 61 in the form of a heat-shrinkable film is coated on the periphery of the rod array 3 and the base 2 from top to bottom at the working speed until the edge of the film 61 reaches the upper part of the exhaust port (refer to fig. 6B);

a coating instruction for controlling the coating operation of the coating unit 6 is issued by the controller 800.

S32: the heating unit 7 starts to radiate and heat the film 61, the film 61 is heated to shrink inwards and cling to the periphery of the base 2 and the rod array 3, and a cavity 64 is formed between the radian of the curved surface at the top of the rod array 3 and the film 61 (refer to fig. 6C);

a heating instruction to control the heating unit 7 to perform the heating operation is issued by the controller 800.

S33: the pumping unit 5 is started, and gas in the cavity 64 is pumped from the bottom of the rod array 3 through the exhaust port, so that the top of the membrane 61 is collapsed inwards under the action of atmospheric pressure and is tightly attached to the curved surface radian of the top of the rod array 3, and a smoothly-transitional curved surface contour is formed (refer to fig. 6D);

the controller 800 issues an evacuation command for controlling the suction unit 5 to perform the suction operation.

S34: the heating unit 7 is turned off, the suction unit 5 is kept working until the film 61 is cooled to normal temperature, and the inward contraction stress of the film 61 makes the film cling to the surface of the base 2 and the rod array 3, so that the complete protection of the rod array 3 and the pre-tightening of the screw rod/screw hole gap are formed.

A turn-off command to control the heating unit 7 to turn off is issued by the controller 800.

After the base 2 is released from the bottom plate of the rigid frame 1, the constructed curved profile can be configured to a casting site for batch and rapid casting formation of solid curved parts.

The curved surface profile constructed by the invention is formed by combining the tops of the n multiplied by n rod arrays, and the base and the rod arrays do not contain electric elements and complex mechanical parts, so that the arrangement density, namely the curved surface resolution, can be realized and depends on the minimum rod section which can be manufactured. If the base and the rod array are manufactured by adopting the technologies of 3D printing, powder metallurgy, precise grinding and the like, the high-density rod array and the mounting hole array are easy to manufacture, and therefore the high-resolution curved surface contour structure effect is achieved. The invention preferably adopts an XY servo platform to position the rotating shaft at the row and column positions of the rod array, adjusts the height of the rotating shaft through a Z-axis module, and rotates the adjusting rod clockwise through the rotating shaft to enter the depth of the base, and only one set of numerical control mechanism is needed to complete the one-by-one adjustment of the top height of the whole rod array, thereby realizing the digital configuration of the curved surface profile. The Z-axis module of the invention is preferably controlled in a position and moment dual mode, namely position control is adopted in the process that the rotating shaft approaches to or is far away from the top of the rod, and moment control is adopted in the rotating process of the rotating shaft driving rod, so that the position of the Z-axis module is changed along with the height of the top of the rod. The membrane not only completely seals the rod array and the four seats of the base so as to prevent the problems of structural pollution, blockage, seizure, corrosion and the like caused by slurry entering a gap between the rod array and the mounting hole array in the pouring process, but also can apply inward pretightening force to the screw rod due to the shrinkage stress generated by the matching of the membrane and the suction unit so as to prevent the rod from loosening and even shifting in the mounting hole caused by the gap.

In the curved surface structure device and the equipment of the invention, the base 2 and the rod array 3 can be used in a plurality of groups of spliced ways besides the independent use mode in the embodiment. Correspondingly, the controller needs to split the larger-format curved surface data into a plurality of sub-regions according to the plane size of a single rod array 3, and configure the curved surface radians of the rod arrays 3 of each group according to the curved surface data of each sub-region. In addition to the effective hole depth (for example, the effective thread depth of a threaded hole) of the mounting hole in the embodiment, the Z-direction range of the configurable curved surface profile can also be expanded by using the cushion block, so that the fluctuation range of the large-size curved surface profile exceeds the effective hole depth of the mounting hole, but the condition that the fluctuation range of the curved surface profile does not exceed the effective hole depth of the mounting hole in the range of a single base is required to be met.

The invention relates to a curved surface construction device, equipment and a method, in particular to a digital configurable solid curved surface construction scheme, wherein a base and a rod array can be repeatedly used. When the rod array is configured and the contour shape of the curved surface needs to be changed, the rod array and the film on the surface of the base are firstly removed, and the removed base is fixed on the bottom plate of the rigid frame. The controller loads the existing curved surface data of the rod array, controls the first moving assembly 41 to position the rotating shaft 43 and the actuating head 44 above each rod 31 one by one, controls the second moving assembly 42 to drive the rotating shaft 43 to move downwards according to the curved surface height data of the corresponding rod 31, enables the actuating head 44 to be in contact with the top of the rod 31, sends a torque control command to the second moving assembly 42, enables the actuating head 44 to press the rod 31, and finally controls the rotating shaft 43 to rotate anticlockwise until the position of the second moving assembly 42 reaches the coordinate corresponding to the initial position of the rod, and the second moving assembly 42 is positioned with the rotating shaft 43. The above steps of positioning the first moving element 41, moving the second moving element 42 downward, pressing the second moving element 42 downward, rotating the rotating shaft 43 counterclockwise, and positioning the second moving element 42 and the rotating shaft 43 are repeated until all the rods 31 are restored to the original positions, and then the curved contour shape of the rod array can be reconfigured by the aforementioned curved surface constructing method.

The solid curved surface formed by the rod array and the base has no power element, and not only has simple structure and low cost, but also has high XY-direction and Z-direction resolution of the curved surface which is easy to realize. The rod has strong bearing capacity and strong capability of resisting mechanical vibration and impact. The invention adopts a set of numerical control mechanism to adjust the height of the top of the array one by one, thereby not only having low cost and few electrical connecting lines, but also having simple control and realizing the full-automatic digital configuration of the curved surface profile. The digital configurable entity curved surface construction method has the advantages of simple scheme, high automation degree, high curved surface construction precision, reusable main body structure and easy popularization and application in various medium and large size template pouring projects.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A curved surface construction device, comprising:

a frame;

a base disposed on the frame and having a plurality of mounting holes;

the rod array is composed of a plurality of rods arranged in an array, each rod correspondingly penetrates through one mounting hole, and the height of each rod extending out of the mounting hole can be adjusted;

an actuation mechanism disposed on the frame and having an actuation head capable of forming a drive connection with each rod of the rod array;

a film coating unit configured to coat a film to the rod array.

2. The curved surface construction device according to claim 1, wherein each rod is formed with a rod engagement portion at an end, and the actuation head has an actuation head engagement portion, wherein the rod engagement portion and the actuation head engagement portion are capable of forming a male-female fit drive connection.

3. The curved surface construction device of claim 2 wherein each mounting hole of the base is configured as a threaded hole, each rod of the array of rods is configured as a threaded rod that mates with the threaded hole, one of the rod interface and the actuator head interface is configured as an axial protrusion, and the other of the rod interface and the actuator head interface is configured as an axial recess.

4. A curved surface construction apparatus according to any one of claims 1 to 3 wherein the actuation mechanism comprises:

a first motion assembly mounted on the frame and configured to be movable in a plane parallel to a surface of the base;

a second motion assembly mounted on the first motion assembly and configured to be movable in a direction perpendicular to the plane;

the rotating shaft is arranged on the second motion assembly and can rotate around the axis of the rotating shaft;

wherein the actuation head is mounted on the rotating shaft.

5. The curved construction device according to any one of claims 1 to 3, wherein the film is a heat shrink film, the curved construction device further comprising a heating unit mounted on the frame.

6. A curved construction apparatus according to any one of claims 1 to 3, further comprising a suction unit mounted on the frame, the suction unit being in fluid communication with each mounting hole on a side of the base facing away from the array of rods.

7. A curved surface construction apparatus, comprising:

a curved surface constructing apparatus as claimed in any one of claims 1 to 6;

the controller is in communication connection or electric connection with the actuating mechanism and controls the actuating mechanism to drive each rod to move, and the controller is in communication connection or electric connection with the film covering unit and controls the film covering unit to cover the film on the rod array.

8. A curved surface constructing method, characterized by comprising:

acquiring curved surface data, wherein the curved surface data defines a curved surface outline;

based on the curved surface data, the height of each rod in the rod array of the curved surface construction device, which extends out of the mounting hole of the base, is adjusted one by utilizing an actuating mechanism of the curved surface construction device, so that the end parts of all the rods in the rod array together construct a curved surface radian corresponding to the curved surface profile;

wrapping a membrane over the rod array;

and fitting the film to the end parts of all the rods in the rod array to construct the curved profile.

9. The method of claim 8, wherein conforming the membrane to the ends of all of the rods in the array of rods comprises:

the suction unit of the curved surface construction apparatus is used to draw air from the mounting holes at a side of the base facing away from the array of rods to cause the membrane to adhere to the ends of the rods.

10. The method of claim 8, wherein wrapping a film over the array of rods comprises:

the film covering unit of the curved surface construction device covers the film to the rod array and the base, and the film is a heat-shrinkable film;

the heating unit of the curved configuration device heats the film, causing the film to shrink under heat and to surround the array of rods and the base.