CN115674724A - High-efficiency prepreg laying method and preforming device - Google Patents
High-efficiency prepreg laying method and preforming device Download PDFInfo
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- CN115674724A CN115674724A CN202211396615.1A CN202211396615A CN115674724A CN 115674724 A CN115674724 A CN 115674724A CN 202211396615 A CN202211396615 A CN 202211396615A CN 115674724 A CN115674724 A CN 115674724A
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- 238000000034 method Methods 0.000 title claims abstract description 61
- 238000003825 pressing Methods 0.000 claims abstract description 119
- 230000008569 process Effects 0.000 claims abstract description 26
- 238000009499 grossing Methods 0.000 claims abstract description 18
- 239000011265 semifinished product Substances 0.000 claims abstract description 12
- 238000005056 compaction Methods 0.000 claims abstract description 10
- 238000004519 manufacturing process Methods 0.000 claims description 11
- 230000002093 peripheral effect Effects 0.000 claims description 9
- 238000006073 displacement reaction Methods 0.000 claims description 8
- 238000005381 potential energy Methods 0.000 claims description 7
- 238000005520 cutting process Methods 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 230000007306 turnover Effects 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 claims description 2
- 238000009966 trimming Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 24
- 238000010030 laminating Methods 0.000 abstract description 4
- 239000010410 layer Substances 0.000 description 21
- 239000000047 product Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 238000003892 spreading Methods 0.000 description 2
- 230000007480 spreading Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000037303 wrinkles Effects 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 238000012549 training Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
- B29C70/38—Automated lay-up, e.g. using robots, laying filaments according to predetermined patterns
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
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- Chemical & Material Sciences (AREA)
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- Moulding By Coating Moulds (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a preforming device based on an efficient prepreg laying method, which comprises a pre-laying layer streamline and a sliding preforming tool, wherein a workpiece space is arranged below a compaction assembly, a smoothing assembly is arranged on the workpiece space, and the bottom of the workpiece space is intermittently conveyed with the preforming tool; when the prefab was carried to the work piece space under the drive of preforming frock on, preforming frock laminating setting was between the tip of pacifying the subassembly and preforming frock, compressed tightly the subassembly and is pushed down, and the tip of pacifying the subassembly slides around from the center of preforming frock gradually, lasts the location to the prefab, until compressing tightly the subassembly laminating on preforming frock. The invention depends on the sliding fit of the pre-laying layer streamline and the pre-forming assembly, so that semi-finished products of the prefabricated parts can sequentially enter the pre-forming assembly according to the preset type, sequence and direction, and the prefabricated material sheets are continuously positioned and flattened in the subsequent pressing process, thereby improving the shape following efficiency.
Description
Technical Field
The invention relates to the technical field of prepreg laying, in particular to a high-efficiency prepreg laying method and a preforming device.
Background
In the preparation process of thermosetting preimpregnation material mould pressing shaping goods, need spread the structure of layer in order to form combined material goods to preimpregnation material, structure to the box body class, preimpregnation material usually adopts the manual work to spread the layer, in the manual work operation of spreading the layer, generally accomplish on preimpregnation material layer frock, the frock structure commonly used is fairly simple at present, mainly include a preimpregnation material and spread the platform of layer usefulness, place the preforming frock of corresponding product on the platform, the preimpregnation material piece that will cut out the completion layer upon layer through the manual work is spread and is pasted to complete the type, thereby accomplish the shop of preimpregnation material and spread the layer. However, the paving operation mode has the problems of low efficiency and high dependence on the proficiency of workers, which are specifically shown as follows:
firstly, manual layering requires multiple people to operate around a pre-forming tool, the layering sequence cannot be changed, the single piece operation time is prolonged for details such as removal of a material sheet isolation film, confirmation of a single-layer layering angle, a single-layer turning wrap angle and the like in the layering process, and the layering efficiency of single pieces is difficult to further improve.
Because the time for completing the single prefabricated part is too long, if the yield needs to be increased, the number of stations, the number of pre-forming tools and the number of personnel can be increased.
Secondly, when relying on the manual work to carry out box body class structure and spreading the preparation, need the staff to use the shovel sword to push hard so that the tablet is along with the type, especially when preparing bigger prefab to staff's strength requirement higher. And moreover, long-time training needs to be carried out on the staffs who lay the layers so that the staffs can master the skills and key points of the layering sequence, direction, cut, corner joint, lap joint, splicing and the like of different material sheets, and the requirement on the proficiency of the staffs is high.
In summary, when the laying work is performed manually, the production efficiency is limited by many aspects of manual work. In order to further improve the production efficiency, the prepreg is generally pressed by a mechanical mode (such as the publication number CN115027074 a), and the mechanical pressing can quickly position, align and smooth a plurality of layered prepregs, so as to avoid the upward bulge or the wrinkle in the middle of the prepregs.
However, such mechanized processes still require manual assistance, such as manually placing the materials in a specified sequence or direction during feeding, i.e., the conventional processes are essentially a pressing device, which still does not solve the drawbacks of the conventional processes, such as the efficiency of the whole process is still limited by the manual layering.
Disclosure of Invention
The invention aims to provide a high-efficiency prepreg laying method and a preforming device, which aim to solve the technical problems that automatic laying and pressing cannot be completed in the prior art, and wrinkles are easy to move and appear in the pressing process.
In order to solve the technical problems, the invention specifically provides the following technical scheme:
a high-efficiency prepreg laying method comprises the following steps:
cutting the coiled raw material into proper shapes, classifying and stacking according to the type of the prepreg, removing isolating films on two sides of the prepreg by an automatic manipulator, and classifying and conveying the prepreg to a pre-laying assembly line;
an automatic manipulator on the pre-laying layer production line lays and attaches the prepreg on the pre-laying layer production line according to the specified type, sequence and direction to form a planar semi-finished product of the prefabricated member;
pulling out the preformed components of the preformed tool along the ground groove, and sequentially feeding the semi-finished products of the preformed components into the preformed components;
after confirming that the pre-forming tool is in place, starting the pressing assembly to continuously position the semi-finished product of the pre-forming tool, simultaneously pressing the pre-forming assembly from the top and the side, and automatically resetting the pressing assembly to form the pre-forming tool after the pressing is in place;
and after the compaction assembly is reset, pulling out the preformed assembly along the groove, trimming the lap joint and the wrap angle part of the preformed assembly, and then lifting the preformed assembly out of the preformed assembly to wait for die forming.
Further, the continuous positioning of the semi-finished preform by the hold-down assembly specifically comprises the steps of:
when the pressing assembly presses the front side of the prefabricated part, the positioning roller on the smoothing assembly gradually moves from the center of the preforming tool to the periphery side of the upper surface of the preforming tool under the pressure of the pressing assembly;
when the pressing assembly presses the side vertical face of the prefabricated part, the positioning roller gradually moves to the bottom from the top of the peripheral side of the preforming tool under the extrusion of the pressing assembly, smooths the peripheral side of the prefabricated part and enables the prefabricated part to be attached to the side vertical face of the preforming tool.
In addition, the invention also provides a preforming device based on the high-efficiency prepreg laying method, which comprises the following steps:
a pre-laying layer assembly line, wherein the prepreg is laid and attached on the pre-laying layer assembly line according to the specified type, sequence and direction through an automatic manipulator to form a planar semi-finished prefabricated part;
the pre-forming tool is arranged on the ground groove and slides and is used for receiving the semi-finished products of the prefabricated parts which sequentially enter in sequence;
the pressing assembly is arranged above the drawn pre-forming tool, and when the pre-forming tool moves to a position right below the pressing assembly, a workpiece space is arranged between the pressing assembly and the pre-forming tool;
the workpiece space is provided with a plurality of rocking bars, the rocking bars of the workpiece space are arranged in the workpiece space, the rocking bars of the workpiece space extend downwards, the end parts of the rocking bars are provided with positioning rollers, and the positioning rollers can move on the outer surface of the preforming tool in a manner of being attached to the preforming tool;
when the prefabricated part is conveyed to the workpiece space by the pre-forming tool, the pressing assembly extrudes the rocker to drive the positioning roller to move from the center of the pre-forming tool to the edge of the upper surface of the pre-forming tool;
the pressing assembly continuously extrudes the rocker to drive the positioning roller to gradually move from the top to the bottom of the periphery of the preforming tool until the pressing assembly is completely attached to the preforming tool, and the preformed part is formed on the preforming tool;
and after the pressing assembly rises, the flattening assembly returns to the original position.
Furthermore, an outer frame is arranged outside the workpiece space, the compressing assembly is arranged on the outer frame and moves in the outer frame through an air cylinder, and the conveying assembly enters the inner part of the outer frame through a limiting assembly and is driven by the limiting assembly to limit the workpiece space;
the smoothing assembly is arranged on the outer frame.
Further, the leveling assembly comprises a plurality of rocking bars which are obliquely arranged in the outer frame, the rocking bars are arranged in the workpiece space, the rocking bars are positioned on a moving path of the pressing assembly, and the rocking bars have elasticity;
the end part of the rocker extends into the workpiece space and is provided with a positioning roller, and the positioning roller can rotate at the end part of the rocker and can be horizontally attached to the upper surface of the pre-forming tool;
when the pressing assembly descends, the rocker is extruded, the end part of the rocker descends and has a tendency of moving towards the periphery, the positioning roller is subjected to downward and horizontal outward forces and moves towards the edge of the preforming tool, and elastic potential energy is accumulated at the end part of the rocker; when the pressing component moves upwards, the rocker drives the positioning roller to reset.
Further, when the rocker is reset, a movable distance is reserved between the positioning roller and the preforming tool, and the movable distance is larger than the thickness of the preformed sheet formed on the preforming tool.
Further, a return spring is arranged between the rocker and the outer frame, the return spring is arranged between a contact point of the rocker and the pressing assembly and a connection point of the rocker and the outer frame, when the rocker is pressed and moves, the return spring accumulates elastic potential energy, and when the force on the rocker disappears, the return spring drives the rocker to reset.
Further, the outer side of the positioning roller is wrapped with a soft layer.
Furthermore, the pressing assembly comprises a top surface pressing plate arranged at the bottom of the air cylinder and a side surface pressing plate arranged at the edge of the top surface pressing plate, and the top surface pressing plate is driven by the air cylinder to slide up and down in the workpiece space;
the top surface pressing plate is connected with the side surface pressing plate through a connecting piece, a movable driving piece is arranged on the connecting piece, and the movable driving piece drives the side surface pressing plate to turn over up and down;
the top surface pressing plate is arranged above the rocker and is in contact with the rocker in the downward moving process, and the side surface pressing plate is in contact with the rocker in the downward turning process.
Furthermore, a displacement groove is formed between the connecting piece and the side pressing plate, and the side pressing plate can slide on the connecting piece through the displacement groove under the driving of the movable driving piece.
Compared with the prior art, the invention has the following beneficial effects:
the invention depends on the sliding fit of the pre-laying stream line and the pre-forming assembly in the whole processing process, so that semi-finished products of the pre-forming assembly can enter the pre-forming assembly in sequence according to the preset type, sequence and direction, and the pre-forming material sheets are continuously positioned and smoothed in the subsequent pressing process and can extend to the side elevation of the pre-forming tool, so that the smoothing of the side elevation of the pre-forming tool is realized, the bubbles generated in the pressing process of the material sheets and the unsmooth phenomenon caused by the displacement are reduced, the later-stage repair time is shortened, and the laying efficiency is improved.
According to the invention, the constantly moving smoothing structure is arranged in the pressing process, so that the material sheet is continuously positioned and smoothed on the preforming tool before being pressed, the material sheet is prevented from displacing, air is removed at the same time, the material sheet is easier to follow the form, the repair difficulty is reduced, the layering efficiency is improved, and the positioning process is controlled by the pressing assembly, so that the pressing process is not influenced, and the use of a driving device and a control device is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
FIG. 1 is a schematic diagram of a pre-forming apparatus for providing an efficient prepreg layup method according to the present invention;
FIG. 2 is a schematic structural diagram of a compaction component in a preforming device for providing a high-efficiency prepreg layup method according to the invention after being pressed down;
FIG. 3 is a schematic view of the structure of a registration roller according to the present invention;
fig. 4 is a schematic structural diagram of a pressing assembly provided in the present invention.
The reference numerals in the drawings denote the following, respectively:
1-an outer frame; 2-a compression assembly; 3-a preform assembly; 4-a limiting component; 5-a smoothing component; 6-performing a tool; 7-; a cylinder;
201-top surface pressing plate; 202-side press plate; 203-a connector; 204-a movable drive; 205-displacement slots;
301-wheels; 302-tool placing table-board;
401-ground groove; 402-a restriction block;
501-rocker; 502-a positioning roller; 503-a return spring; 504-softer layer.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a high-efficiency prepreg laying method, which comprises the following steps:
cutting the coiled prepreg raw material into a proper shape and classifying and stacking;
removing the prepreg double-sided isolating film by an automatic manipulator to prepare prepreg sheets, and conveying the prepreg sheets to a prepreg layer streamline in a classified manner;
an automatic manipulator on the pre-laying layer assembly line lays and attaches the prepreg sheets into planar prefabricated parts according to the specified type, sequence and direction (at the moment, a corresponding product pre-forming tool is not needed to be customized);
pulling out the preformed components of the preformed tool along the ground groove, pushing the preformed components into the outer frame until the preformed components contact the limiting components, and sequentially feeding the semi-finished products of the preformed components into the preformed components;
after confirming that a pre-forming tool on the pre-forming assembly is in place, starting a pressing assembly, enabling a cylinder to drive a top surface pressing plate to press downwards, enabling a side surface to press towards a side vertical surface of the pre-forming tool through a connecting piece, continuously positioning the pre-forming tool through a flattening assembly during pressing, enabling the flattening assembly to completely leave the pre-forming tool after the cylinder descends in place, enabling the pre-forming tool and the top surface and the side vertical surface of the pre-forming tool to be in shape, automatically lifting the cylinder, and resetting the flattening assembly;
after the pressing assembly and the flattening assembly are reset, the pre-forming assembly is pulled out of the outer frame, the lap joint and the corner wrapping part of the prefabricated member are simply and manually trimmed, and then the prefabricated member is lifted out to wait for mold pressing forming.
Different from the common prepreg dressing method, a workpiece space is arranged below the vertical direction of the compaction assembly, a smoothing assembly is arranged on the workpiece space, and a pre-forming tool is discontinuously conveyed at the bottom of the workpiece space;
when the prefabricated part is conveyed to a workpiece space under the driving of the pre-forming tool, the pre-forming tool is attached between the end part of the flattening assembly and the pre-forming tool, the compressing assembly is pressed downwards, the end part of the flattening assembly gradually slides towards the periphery from the center of the pre-forming tool, and the prefabricated part is continuously positioned until the compressing assembly is attached to the pre-forming tool;
the pressing assembly rises, and the flattening assembly is restored to the original position.
In this in-process, when compressing tightly the subassembly and removing in the work piece space, when suppressing downwards, the subassembly of pacifying by can removing is fixed a position the preforming frock on, make it can not produce the removal, and along with going on that pushes down constantly, the subassembly of pacifying constantly removes the edge to the preforming, pacify and fix a position the preforming at the removal in-process for the air discharge between preforming piece and the preforming frock, prevent to produce the bubble in the pressing process, when pacifying the subassembly and leave the upper surface of preforming completely, compress tightly the upper surface that the subassembly also just in time laminated at the preforming completely.
When the preforming frock will carry out the side pressure, smooth the subassembly and remove to the lower surface direction from the upper surface direction of preforming frock, smooth the side facade of preforming piece for week side of preforming piece keeps leveling at the in-process that pushes down, discharges air wherein, when compressing tightly the side facade laminating of subassembly and preforming frock, smooths the subassembly and leaves preforming frock completely, smooths the subassembly this moment and is in by compressing tightly the spacing state of subassembly.
The action of the smoothing assembly is completely controlled by the pressing assembly, when the prefabricated section is required to be pressed, the smoothing assembly is correspondingly positioned and smoothed on the prefabricated section, the driving device which is more than the prefabricated section is not required, continuous positioning and side smoothing of the prefabricated section can be realized, the smoothing assembly has elasticity, when the pressing assembly gradually rises, the pressing assembly is pressed by contact, and the structure of the smoothing assembly is gradually reset.
The method has the difficulty that under the action of no other driving device, the laying method is provided, the preformed sheet is continuously positioned in the process of pressing the preformed sheet downwards, the pressing is not shielded, the preformed sheet can be flattened on the side surface, and in order to solve the difficulty, the method comprises the following steps:
when the pressing assembly presses the front surface of the prefabricated member, the positioning roller on the flattening assembly gradually moves to the periphery of the upper surface of the preforming tool from the center of the prefabricated member under the pressure of the pressing assembly, and the surface of the prefabricated member is flattened;
when the side facade of the prefabricated member is pressed by the pressing assembly, the positioning roller gradually moves to the bottom from the top of the peripheral side of the preforming tool, and the positioning roller continuously rotates to smooth the peripheral side of the prefabricated member.
The layering mode not only enables the prefabricated sheet to be continuously positioned on the preforming tool in the pressing process, but also gradually exhausts air between the prefabricated sheet and the preforming tool along with the movement of the positioning roller, and the surface of the prefabricated sheet can be flattened. The invention realizes continuous positioning and smoothing of the precast slab by using the positioning roller and driving the positioning roller to move, but particularly, the movement action of the positioning roller is controlled by the compacting component, and the driving force is brought by the compacting component, compared with the method of directly adding a device on the surface of the pre-forming tool to position the precast slab, the layering mode has simple structure, the structure can be matched with the structure, and the layering mode does not need to be connected with the control component, so that the layering efficiency can be directly improved.
The invention provides an efficient prepreg layering method, which has the difficulty that a prefabricated sheet is positioned and smoothed in the pressing process without influencing and does not relate to more complicated devices and control so as to be matched with the method.
In addition, at this in-process, rely on the sliding fit of pre-laying layer assembly line and preformed subassembly to make the prefab semi-manufactured goods can enter in the preformed subassembly according to preset kind, order, direction in order, and carry out continuous location and smooth to the prefabricated material piece in subsequent pressing process, and can extend to the side facade of preforming frock, realize smoothing to the side facade of preforming frock.
As shown in fig. 1 to 4, the present invention provides a preforming device for a high efficiency prepreg layup method, and the preforming device capable of implementing the high efficiency prepreg layup method mainly includes the following structures: the outer frame 1, compress tightly subassembly 2, preformed unit 3, spacing subassembly 4, smooth subassembly 5 and install preforming frock 6 on preformed unit 3.
The pressing assembly 2 is arranged in the outer frame 1, the air cylinder 7 is arranged between the pressing assembly 2 and the outer frame 1, the pressing assembly 2 comprises a top surface pressing plate 201 and a side surface pressing plate 202 which are connected below the air cylinder 7, and a connecting piece 203 between the top surface pressing plate and the side surface pressing plate 202, a movable driving piece 204 for driving the side surface pressing plate 202 to be turned up and down is arranged on the connecting piece 203, the top surface pressing plate 201 and the side surface pressing plate 202 are steel plates, and the movable driving piece 204 can be an oil pump. Compress tightly subassembly 2 and fix on outer frame, compress tightly top surface clamp plate 201 and the side clamp plate 202 of subassembly 2 and can carry out the detail customization such as size, angle, unsmooth according to actual conditions, compress tightly side clamp plate 202 of subassembly 2 and can decide whether to customize flange compact structure according to actual conditions.
The preform assembly 3 comprises: take wheel 301's frock place mesa 302, nylon material product preforming frock 6 sets up on frock place mesa 302, preshapes subassembly 3 and compresses tightly and prescribes a limit to the work piece space between the subassembly 2, and the work piece space is used for the business turn over of preshaping subassembly 3 and the dress of work piece to get. The top surface, the side vertical surface, the flange and other parts of the preforming tool 6 can be designed into different detailed structures such as drawing angles, concave-convex structures and the like according to actual conditions.
Spacing subassembly 4 includes: the supply gliding geosyncline 401 of wheel 301, restriction piece 402 includes steel sheet and block rubber, and restriction piece 402 is fixed on outer frame, has induction system on the restriction piece 402, touches restriction piece 402 when taking shape subassembly 3 in advance, just can normally start to compress tightly subassembly 2, and spacing subassembly 4 can restrict the direction that takes shape subassembly 3 to advance and the distance that advances and guarantee to take shape subassembly 3 in advance with the cooperation and compress tightly the position requirement of subassembly 2 in advance.
The leveling assembly 5 comprises a plurality of rocking rods 501 obliquely arranged in the outer frame 1, the rocking rods 501 are arranged in the workpiece space, the rocking rods 501 are positioned on the moving path of the pressing assembly 2, and the rocking rods 501 have elasticity. The end of rocker 501 extends to the inside of work piece space and is provided with positioning roller 502, and positioning roller 502 can rotate at the end of rocker 501 and can the level laminating at the upper surface of preforming frock 6. The top platen 201 is disposed above the rocker 501, and contacts the rocker 501 during the downward movement, and the side platen 202 contacts the rocker 501 during the downward folding.
According to the preforming device designed by the invention, the steps of applying force to push a shovel by staff, confirming the layering angle of each layer and the like during layering are avoided. When the pre-forming tool is used as a process of production, the original manual laying steps can be reduced, the automatic mechanical arm is used for carrying out operations of steps such as isolating film removal, material sheet matching or material sheet laying, the operation complexity of workers is reduced, the line production is further carried out, the work accuracy and the production efficiency are improved, and the pre-forming tool corresponding to product customization can be reduced.
Different from the existing preforming device, the compaction component 2 is arranged above the preforming tool 6, and when the preforming tool 6 moves to be right below the compaction component 2, a workpiece space is arranged between the compaction component 2 and the preforming tool 6;
the smoothing component 5 is arranged in a workpiece space, a plurality of rockers of the smoothing component 5 extend downwards, the ends of the rockers are provided with positioning rollers 502, and the positioning rollers 502 can move on the outer surface of the preforming tool 6 in a fitting mode.
A return spring 503 is arranged between the rocker 501 and the outer frame 1, the return spring 503 is arranged between a contact point of the rocker 501 and the pressing assembly 2 and a connection point of the rocker 501 and the outer frame 1, when the rocker 501 is pressed and moves, the return spring 503 accumulates elastic potential energy, and when the force on the rocker 501 disappears, the return spring 503 drives the rocker 501 to return.
When the pressing assembly 2 descends, the rocker 501 is squeezed, the end part of the rocker 501 descends and tends to move towards the periphery, the positioning roller 502 is subjected to downward and horizontal outward forces, the positioning roller 502 moves towards the edge of the preforming tool 6, and elastic potential energy is accumulated at the end part of the rocker 501; when the pressing assembly 2 moves upwards, the rocker 501 drives the positioning roller 502 to reset.
The positioning roller 502 extrudes the prefabricated sheet when receiving a downward force, positions the prefabricated sheet on the preforming tool 6, and can move towards the peripheral side of the prefabricated sheet, smooths the prefabricated sheet in the moving process, enables the prefabricated sheet to be attached to the preforming tool 6, reduces the occurrence of non-attachment situations, and reduces the protrusion and the bubbles on the preformed sheet.
According to the invention, the flattening component 5 is not simply added between the pressing component 2 and the pre-forming tool 6, but based on the problems, a workpiece space is arranged below the pressing component 2, and the pre-forming tool 6 sequentially enters the workpiece space and is continuously positioned and flattened in the space.
When the prefabricated part is conveyed to a workpiece space by the preforming tool 6, the pressing assembly 2 extrudes the rocker to drive the positioning roller 502 to move from the center of the preforming tool to the edge of the upper surface of the preforming tool 6;
the pressing assembly 2 continuously extrudes the rocker to drive the positioning roller 502 to gradually move from the top to the bottom of the peripheral side of the preforming tool 6 until the pressing assembly 2 is completely attached to the preforming tool, and the preformed part is formed on the preforming tool 6;
after the pressing component 2 is lifted, the flattening component 5 is restored to the original position.
The prepreg laying method matched with the high-efficiency prepreg laying preforming device mainly comprises the following steps:
1. placing the prefabricated sheet which is aligned with the angle and is horizontally placed on a preforming tool 6 of the preformed assembly 3, pulling out the preformed assembly 3 along the geosyncline 401, and pushing the preformed assembly 3 into the outer frame 1 until the preformed assembly touches the limiting assembly 4;
2. after confirming that the prefabricated piece reaches the space of a workpiece, starting the compaction assembly 2, enabling the cylinder 7 to drive the top surface pressing plate 201 to be compacted downwards, enabling the rocker 501 to bear pressure and drive the positioning roller 502 to move from the center of the preforming tool 6 to the edge of the preforming tool 6, enabling the positioning roller 502 to move from the top end to the bottom of the preforming tool 6 when the side surface pressing plate 202 is compacted to the side vertical surface of the preforming tool 6 through the connecting piece 203 until the side surface pressing plate is completely separated from the preforming tool 6, enabling the top surfaces and the side vertical surfaces of the prefabricated piece and the preforming tool 6 to be completely conformal after the cylinder 7 and an oil pump are lowered in place, and automatically lifting the cylinder 7 and the oil pump;
3. after the automatic lifting, the force applied to the rocker 501 disappears, the rocker 501 resets, the positioning roller 502 resets, and the positioning roller 502 can still be automatically attached to the surface of the prefabricated sheet, so that the pressing assembly 2 can be conveniently demoulded;
4. after the compressing assembly 2 and the flattening assembly 5 are reset, the pre-forming assembly 3 is pulled out along the ground groove 401, the lap joint and the wrap angle part of the prefabricated member are simply and manually trimmed, and then the prefabricated member is lifted out to wait for mold pressing forming.
Preferably, although the rocking bar 501 can be deformed and has a certain elasticity, in order to better restore the rocking bar 501, a return spring 503 is arranged between the rocking bar 501 and the outer frame 1, the return spring 503 is arranged between a contact point of the rocking bar 501 and the pressing assembly 2 and a connection point of the rocking bar 501 and the outer frame 1, when the rocking bar 501 is pressed and moved, the return spring 503 accumulates elastic potential energy, and when the force on the rocking bar 501 disappears, the return spring 503 drives the rocking bar 501 to restore.
When the rocker 501 is reset, the positioning roller 502 has a movable distance with the preforming tool 6, and the movable distance is greater than the thickness of the preformed sheet formed on the preforming tool 6.
In order to prevent the positioning roller 502 from being limited and incapable of moving on the prefabricated sheet arranged on the preforming tool 6 due to the fact that the preforming tool 6 is provided with a large bulge, the outer side of the positioning roller 502 is wrapped with the soft layer 504, and the soft layer 504 enables the positioning roller 502 to have certain elasticity, and to be variable in diameter when being squeezed and to leave the limiting area.
Preferably, in order to smooth the preform sheet better, a displacement slot 205 is provided between the connecting member 203 and the side pressing plate 202, and the side pressing plate 202 can slide on the connecting member 203 through the displacement slot 205 by the driving of the movable driving member 204.
Through the efficient prepreg paving method and the preforming device, the material sheet can be continuously positioned on the preforming tool before being pressed, the pressing process is not affected, the peripheral side of the material sheet can be pressed and flattened before the material sheet and the side face of the preforming tool follow the shape, and the unknown bulges and air bubbles in the pressing process are reduced.
The above embodiments are only exemplary embodiments of the present application, and are not intended to limit the present application, and the protection scope of the present application is defined by the claims. Various modifications and equivalents may be made by those skilled in the art within the spirit and scope of the present application and such modifications and equivalents should also be considered to be within the scope of the present application.
Claims (10)
1. A high-efficiency prepreg laying method is characterized by comprising the following steps:
cutting the coiled raw materials into proper shapes, classifying and stacking according to the type of the prepreg, removing the isolating films on the two sides of the prepreg by an automatic manipulator, and classifying and conveying the prepreg to a pre-laying assembly line;
an automatic manipulator on the pre-laying layer production line lays and attaches the prepreg on the pre-laying layer production line according to the specified type, sequence and direction to form a planar semi-finished product of the prefabricated member;
pulling out the preformed components of the preformed tool along the ground groove, and sequentially feeding the semi-finished products of the preformed components into the preformed components;
after confirming that the pre-forming tool is in place, starting the pressing assembly to continuously position the semi-finished product of the pre-forming tool, simultaneously pressing the pre-forming assembly from the top and the side, and automatically resetting the pressing assembly to form the pre-forming tool after the pressing is in place;
and after the compaction assembly is reset, pulling out the preformed assembly along the groove, trimming the lap joint and the wrap angle part of the preformed assembly, and then lifting the preformed assembly out of the preformed assembly to wait for die forming.
2. A high efficiency prepreg layup method according to claim 1, wherein the continuous positioning of the preform intermediate by the hold-down assembly comprises the steps of:
when the pressing assembly presses the front surface of the prefabricated part, the positioning roller on the flattening assembly is gradually moved from the center of the preforming tool to the periphery side of the upper surface of the preforming tool under the pressure of the pressing assembly;
when the pressing assembly presses the side vertical face of the prefabricated part, the positioning roller gradually moves to the bottom from the top of the peripheral side of the preforming tool under the extrusion of the pressing assembly, smooths the peripheral side of the prefabricated part and enables the prefabricated part to be attached to the side vertical face of the preforming tool.
3. A preforming device for the high efficiency prepreg layup method according to claim 1 or 2, comprising:
the pre-laying layer production line is used for laying and pasting the prepreg on the pre-laying layer production line according to the specified type, sequence and direction through an automatic manipulator to form a planar semi-finished product of the prefabricated member;
the pre-forming tool (6) is arranged on the ground groove and slides and is used for receiving the semi-finished products of the prefabricated parts which sequentially enter in sequence;
the pressing assembly (2) is arranged above the drawn pre-forming tool (6), and when the pre-forming tool (6) moves to a position right below the pressing assembly (2), a workpiece space is arranged between the pressing assembly (2) and the pre-forming tool (6);
the smoothing assembly (5) is arranged in the workpiece space, a plurality of rockers of the smoothing assembly (5) extend downwards, the ends of the rockers are provided with positioning rollers (502), and the positioning rollers (502) can move on the outer surface attached to the preforming tool (6);
when the prefabricated part is conveyed to the workpiece space by the pre-forming tool (6), the pressing assembly (2) extrudes the rocker to drive the positioning roller (502) to move from the center of the pre-forming tool to the edge of the upper surface of the pre-forming tool (6);
the pressing assembly (2) continuously extrudes the rocker to drive the positioning roller (502) to gradually move from the top to the bottom of the periphery of the preforming tool (6) until the pressing assembly (2) is completely attached to the preforming tool, and the preformed part follows the shape of the preformed tool (6);
the flattening component (5) is restored to the original position after the pressing component (2) is lifted.
4. The preforming device for the high-efficiency prepreg layup method according to claim 3, wherein an outer frame (1) is provided outside the workpiece space, the compacting assembly (2) is provided on the outer frame (1) and moves inside the outer frame (1) through a cylinder (7), and the conveying assembly () enters the inside of the outer frame (1) through a spacing assembly (4) and is spaced above the workpiece space under the driving of the spacing assembly (4);
the flattening assembly (5) is arranged on the outer frame (1).
5. The preforming device for the high-efficiency prepreg laying method according to claim 4, wherein the flattening assembly (5) comprises a plurality of rockers (501) obliquely arranged in the outer frame (1), the rockers (501) are arranged in the workpiece space, the rockers (501) are located on the moving path of the compaction assembly (2), and the rockers (501) have elasticity;
the end part of the rocker (501) extends into the workpiece space and is provided with a positioning roller (502), and the positioning roller (502) can rotate at the end part of the rocker (501) and can be horizontally attached to the upper surface of the preforming tool (6);
when the pressing assembly (2) descends, the rocker (501) is squeezed, the end part of the rocker (501) descends and has a tendency of moving towards the periphery, the positioning roller (502) is subjected to downward and horizontal outward force, the positioning roller (502) moves towards the edge of the preforming tool (6), and elastic potential energy is accumulated at the end part of the rocker (501); when the pressing component (2) moves upwards, the rocker (501) drives the positioning roller (502) to reset.
6. The preforming device for the high-efficiency prepreg laying method according to claim 5, wherein when the rocker (501) is reset, the positioning roller (502) and the preforming tool (6) have a movable distance therebetween, and the movable distance is larger than the thickness of the preformed sheet formed on the preforming tool (6).
7. The preforming device for the high-efficiency prepreg paving method according to claim 6, characterized in that a return spring (503) is arranged between the rocker (501) and the outer frame (1), the return spring (503) is arranged between the contact point of the rocker (501) and the pressing assembly (2) and the connection point of the rocker (501) and the outer frame (1), when the rocker (501) is pressed and moved, the return spring (503) accumulates elastic potential energy, and when the force on the rocker (501) disappears, the return spring (503) drives the rocker (501) to return.
8. The preforming device for the high-efficiency prepreg layup method according to claim 5, wherein the positioning roller (502) is wrapped with a soft layer (504) on the outer side.
9. The preforming device for the high-efficiency prepreg paving method according to claim 5, wherein the compacting assembly (2) comprises a top surface pressing plate (201) arranged at the bottom of the cylinder (7) and a side surface pressing plate (202) arranged at the edge of the top surface pressing plate (201), and the top surface pressing plate (201) slides up and down in the work space under the driving of the cylinder (7);
the top surface pressing plate (201) is connected with the side surface pressing plate (202) through a connecting piece (203), a movable driving piece (204) is arranged on the connecting piece (203), and the movable driving piece (204) drives the side surface pressing plate (202) to turn over up and down;
the top surface pressing plate (201) is arranged above the rocker (501) and is in contact with the rocker (501) in the downward moving process, and the side surface pressing plate (202) is in contact with the rocker (501) in the downward turning process.
10. The preforming device for the high-efficiency prepreg layup method according to claim 9, wherein a displacement groove (205) is provided between the connecting member (203) and the side press plate (202), and the side press plate (202) can slide on the connecting member (203) through the displacement groove (205) under the driving of the movable driving member (204).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211396615.1A CN115674724B (en) | 2022-11-09 | 2022-11-09 | Efficient prepreg layering method and preforming device |
| PCT/CN2023/110680 WO2024098847A1 (en) | 2022-11-09 | 2023-08-02 | Highly-efficient prepreg laying method and pre-forming apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211396615.1A CN115674724B (en) | 2022-11-09 | 2022-11-09 | Efficient prepreg layering method and preforming device |
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| CN115674724A true CN115674724A (en) | 2023-02-03 |
| CN115674724B CN115674724B (en) | 2023-05-05 |
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| CN202211396615.1A Active CN115674724B (en) | 2022-11-09 | 2022-11-09 | Efficient prepreg layering method and preforming device |
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| CN (1) | CN115674724B (en) |
| WO (1) | WO2024098847A1 (en) |
Cited By (2)
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| CN116512631A (en) * | 2023-04-13 | 2023-08-01 | 南京辰茂新材料科技有限公司 | Automatic change prepreg variable angle and spread equipment of pasting |
| WO2024098847A1 (en) * | 2022-11-09 | 2024-05-16 | 中机精密成形产业技术研究院（安徽）股份有限公司 | Highly-efficient prepreg laying method and pre-forming apparatus |
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| CN115674724B (en) * | 2022-11-09 | 2023-05-05 | 中机精密成形产业技术研究院（安徽）股份有限公司 | Efficient prepreg layering method and preforming device |
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| WO2008120023A1 (en) * | 2007-04-02 | 2008-10-09 | Integrated Materials Technology Limited | Methods and apparatus for making thermoplastic prepreg with specific fibre orientation |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN115674724B (en) | 2023-05-05 |
| WO2024098847A1 (en) | 2024-05-16 |
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Denomination of invention: An Efficient Prepreg Layering Method and Preforming Device Effective date of registration: 20231023 Granted publication date: 20230505 Pledgee: Huishang Bank Co.,Ltd. Wuhu Tuanjie Road Branch Pledgor: CHINA MACHINERY INDUSTRY TECHNOLOGY RESEARCH INSTITUTE OF PRECISION FORMING (ANHUI) Co.,Ltd. Registration number: Y2023980062294 |