阅读说明：本技术 一种超大型圆盘亚克力玻璃组装浇注成型工艺 (Ultra-large disc acrylic glass assembling, pouring and molding process ) 是由 校伟民 汤宏强 宋鹏举 张銮 吴娟 李磊 于 2020-12-23 设计创作，主要内容包括：本发明涉及一种超大型圆盘亚克力玻璃组装浇注成型工艺,步骤为：a.支撑筋板搭设：采用钢管脚手架支撑多道亚克力筋板；b.裁切小块亚克力玻璃；c.将上述小块亚克力玻璃支撑在亚克力筋板上；d.接头接缝处未被亚克力边条压接覆盖的朝下的接缝口上绕接铝膜并用胶条粘压；e.在最外圈正多角形结构的顶点位置设置浇注口注料；f.排气；g.复合固化覆盖保温28±1℃,固化时间38h；h.成品：拆除亚克力边条以及铝膜,打磨平整处理。该工艺能便捷组装,稳定牢固成型超大型圆盘亚克力玻璃。(The invention relates to an ultra-large disc acrylic glass assembling, pouring and molding process, which comprises the following steps: a. erecting a supporting rib plate: supporting a plurality of acrylic rib plates by using a steel pipe scaffold; b. cutting small pieces of acrylic glass; c. supporting the small pieces of acrylic glass on acrylic rib plates; d. an aluminum film is wound on a downward seam joint which is not covered by the acrylic edge strip in a compression joint manner at the joint seam and is bonded and pressed by an adhesive tape; e. arranging a pouring gate for injecting materials at the vertex position of the outermost circle of the regular polygonal structure; f. exhausting; g. the composite curing covering is insulated at 28 +/-1 ℃ and the curing time is 38 h; h. and (3) finished product: and (4) removing the acrylic edge strips and the aluminum film, and polishing and flattening. The process can be conveniently assembled, and the ultra-large disc acrylic glass can be stably and firmly molded.)

1. The super-large disc acrylic glass assembling and casting molding process is characterized in that: the molding steps are as follows:

a. erecting a supporting rib plate: supporting a plurality of acrylic rib plates by using a steel pipe scaffold, wherein the plurality of acrylic rib plates form a regular polygonal structure with more than one circle of regular polygons in a surrounding manner, the multi-circle regular polygonal structure is sequentially and parallelly expanded from inside to outside, the vertex of the external corner of the outermost circle of the regular polygonal structure is sequentially connected with the acrylic rib plates in a pulling manner around the circumference, the acrylic rib plates are all connected with the center of the most center regular polygonal structure and the external corner thereof, or the vertex of the internal corner thereof, or the internal corner thereof, the acrylic rib plates are correspondingly connected between the vertices of the external corner of any regular polygonal structure and between the vertices of the internal corner, an acrylic transition cylinder is arranged at the intersection point position of the pulling connection of all the acrylic rib plates, rib plate joints are integrally cast according to the corresponding acrylic pulling connection direction on the intersection point position, and 3mm joint seams are reserved between each rib plate joint and the corresponding acrylic rib plate joint surface;

b. cutting a small piece of acrylic glass: cutting a corresponding small piece of acrylic glass according to the triangular and polygonal shapes enclosed by the acrylic rib plates in the step a, wherein the small piece of acrylic glass is formed by expanding the thickness of the acrylic rib plates to a half size minus 1-2mm on the basis of the enclosed shape;

c. assembling an ultra-large disc acrylic glass mold: c, enabling the small pieces of acrylic glass to correspond to the shapes defined in the step a, enabling the side edges of the small pieces of acrylic glass to be supported on acrylic rib plates, symmetrically arranging and leaving disc joints on the two adjacent side edges by the length center of the acrylic rib plates, and pressing aluminum films on the disc joints in a pressing mode and adhering and pressing the aluminum films by adhesive tapes; the method comprises the following steps of bonding acrylic edge strips with right-angle corners in cross section, and bonding the side surfaces of each acrylic rib plate and the lower end surface of a small piece of acrylic glass lapped on the acrylic rib plate through the outer side surfaces of two right-angle edges of each acrylic edge strip by using a double-sided adhesive;

d. and (3) molding the joint of the rib plate: an aluminum film is wound on a downward seam joint which is not covered by the acrylic edge strip in a compression joint manner at the joint seam and is bonded and pressed by an adhesive tape;

e. integrally pouring a seam: arranging a pouring gate at the vertex position of the outermost circle of the regular polygonal structure, performing primary material injection on the splicing material from any vertex on one side and the symmetrical vertex on the other side or two vertexes beside the symmetrical position through an air compressor, performing secondary material injection on the splicing material from the vertexes on two sides of any vertex through the air compressor when the material is fed into the vertex position of the secondary outer circle of the regular polygonal structure, and sequentially finishing multiple material injection according to the feeding mode until the disc joint and the rib plate joint are filled with the casting material;

f. exhausting: observing the castable in each seam, checking bubbles, and removing the bubbles by using a tool needle;

g. compounding and curing: covering and insulating the ultra-large disc acrylic glass and the supporting rib plates at 28 +/-1 ℃ for 38 h;

h. and (3) finished product: and (4) removing the acrylic edge strips and the aluminum films, and polishing and flattening the cured joint.

2. The assembling and casting molding process of the ultra-large type disc acrylic glass according to claim 1, which is characterized in that: the multi-circle regular polygonal structure is sequentially arranged in parallel at equal intervals from inside to outside in an expanding way.

3. The assembling and casting molding process of the ultra-large type disc acrylic glass according to claim 1, which is characterized in that: the outermost circle is arranged into two circles of regular polygonal structures, and the two circles of regular polygonal structures are staggered circumferentially.

4. The assembling and casting molding process of the ultra-large type disc acrylic glass as claimed in claim 3, which is characterized in that: and the vertex of the internal corner of the other outermost ring regular polygonal structure is overlapped with the vertex of the external corner of the inner ring regular polygonal structure.

5. The assembling and casting molding process of the ultra-large type disc acrylic glass according to claim 1, which is characterized in that: d, forming a rib plate joint die: and the downward seam of the joint seam which is not covered by the acrylic edging in a crimping way is wound and connected with an acrylic pressing strip.

Technical Field

The invention relates to acrylic manufacture, in particular to an assembling, pouring and molding process of ultra-large disc acrylic glass.

Background

The transparent acrylic sheet is made of polymethyl methacrylate which is a PMMA homopolymer or copolymer, has excellent performances such as high transmittance, low turbidity, good processability, excellent weather resistance and the like, can withstand high-temperature, ultraviolet light and strong sunlight irradiation, and resists solvents and common chemicals, and is applied to large windows and large wall sightseeing channels due to the special property of the material; meanwhile, the plasticity is strong, the molding change is large, the processing and the molding are easy, the method can be applied to pressure-bearing water tanks with various shapes, and the attractiveness of the interior of a building is improved. Transparent acrylic sheets are widely used in aquarium engineering due to their special physical properties.

The existing acrylic umbrella-shaped ceiling for the building is large in size and needs to be spliced on site, and the requirements of convenience, safety, stability and firmness of the traditional single plate in factory production and field assembly cannot be met.

Disclosure of Invention

The invention provides an assembling, pouring and molding process of ultra-large disc acrylic glass, which can be conveniently assembled and stably and firmly molded.

The technical scheme adopted by the invention is as follows: the super-large disc acrylic glass assembling and casting molding process is characterized in that: the molding steps are as follows:

a. erecting a supporting rib plate: supporting a plurality of acrylic rib plates by using a steel pipe scaffold, wherein the plurality of acrylic rib plates form a regular polygonal structure with more than one circle of regular polygons in a surrounding manner, the multi-circle regular polygonal structure is sequentially and parallelly expanded from inside to outside, the vertex of the external corner of the outermost circle of the regular polygonal structure is sequentially connected with the acrylic rib plates in a pulling manner around the circumference, the acrylic rib plates are all connected with the center of the most center regular polygonal structure and the external corner thereof, or the vertex of the internal corner thereof, or the internal corner thereof, the acrylic rib plates are correspondingly connected between the vertices of the external corner of any regular polygonal structure and between the vertices of the internal corner, an acrylic transition cylinder is arranged at the intersection point position of the pulling connection of all the acrylic rib plates, rib plate joints are integrally cast according to the corresponding acrylic pulling connection direction on the intersection point position, and 3mm joint seams are reserved between each rib plate joint and the corresponding acrylic rib plate joint surface;

b. cutting a small piece of acrylic glass: cutting a corresponding small piece of acrylic glass according to the triangular and polygonal shapes enclosed by the acrylic rib plates in the step a, wherein the small piece of acrylic glass is formed by expanding the thickness of the acrylic rib plates to a half size minus 1-2mm on the basis of the enclosed shape;

c. assembling an ultra-large disc acrylic glass mold: c, enabling the small pieces of acrylic glass to correspond to the shapes defined in the step a, enabling the side edges of the small pieces of acrylic glass to be supported on acrylic rib plates, symmetrically arranging and leaving disc joints on the two adjacent side edges by the length center of the acrylic rib plates, and pressing aluminum films on the disc joints in a pressing mode and adhering and pressing the aluminum films by adhesive tapes; the method comprises the following steps of bonding acrylic edge strips with right-angle corners in cross section, and bonding the side surfaces of each acrylic rib plate and the lower end surface of a small piece of acrylic glass lapped on the acrylic rib plate through the outer side surfaces of two right-angle edges of each acrylic edge strip by using a double-sided adhesive;

d. and (3) molding the joint of the rib plate: an aluminum film is wound on a downward seam joint which is not covered by the acrylic edge strip in a compression joint manner at the joint seam and is bonded and pressed by an adhesive tape;

e. integrally pouring a seam: arranging a pouring gate at the vertex position of the outermost circle of the regular polygonal structure, performing primary material injection on the splicing material from any vertex on one side and the symmetrical vertex on the other side or two vertexes beside the symmetrical position through an air compressor, performing secondary material injection on the splicing material from the vertexes on two sides of any vertex through the air compressor when the material is fed into the vertex position of the secondary outer circle of the regular polygonal structure, and sequentially finishing multiple material injection according to the feeding mode until the disc joint and the rib plate joint are filled with the casting material;

f. exhausting: observing the castable in each seam, checking bubbles, and removing the bubbles by using a tool needle;

g. compounding and curing: covering and insulating the ultra-large disc acrylic glass and the supporting rib plates at 28 +/-1 ℃ for 38 h;

h. and (3) finished product: and (4) removing the acrylic edge strips and the aluminum films, and polishing and flattening the cured joint.

Furthermore, the multi-circle regular polygonal structure is sequentially arranged in parallel at equal intervals from inside to outside in an expanding manner.

Furthermore, the outermost circle is arranged into a two-circle regular polygonal structure, and the two circles of regular polygonal structures are circumferentially staggered.

Furthermore, any outermost ring regular polygonal structure is parallel to the inner ring regular polygonal structure, the vertex of the external corner of the other outermost ring regular polygonal structure is positioned on the symmetrical center line of the two adjacent vertices of the external corner of any outermost ring regular polygonal structure, and the vertex of the internal corner of the other outermost ring regular polygonal structure is overlapped with the vertex of the adjacent external corner of the inner ring regular polygonal structure.

Further, d, rib plate seam molding: and the downward seam of the joint seam which is not covered by the acrylic edging in a crimping way is wound and connected with an acrylic pressing strip.

The invention improves the structural requirement of the ultra-large disc acrylic glass into a structure with a plurality of circles of supporting rib plates with regular polygonal structures to support a plurality of independent small pieces of acrylic glass, completes the design and manufacture of the small pieces of acrylic glass and the acrylic rib plates in a factory, erects the supporting rib plates after erecting a scaffold on site, supports the small pieces of acrylic glass to complete the assembly of the ultra-large regular polygon close to the disc acrylic glass, leaves a poured joint seam during the assembly and butt joint, and pours the assembled material from outside to inside for a plurality of times, thereby realizing the integrated pouring, splicing and curing molding of the ultra-large disc acrylic glass and the supporting rib plate structure.

Drawings

FIG. 1 is a schematic view of a support rib plate erection structure of the present invention;

FIG. 2 is a schematic structural view of a disk seam molding of the present invention;

FIG. 3 is an enlarged view of the structure at A in FIG. 1;

FIG. 4 is a schematic view of a rib molding structure according to the present invention.

In the figure: the super-large disc acrylic glass 1, the small acrylic glass 2, the acrylic rib plates 3, the first outer ring regular hexagon rib plate group structure 4, the second outer ring regular hexagon rib plate group structure 5, the middle ring regular hexagon rib plate group structure 6, the inner ring regular hexagon rib plate group structure 7, the acrylic transfer cylinder 8, the rib plate joint 9, the joint 10, the disc joint 11, the acrylic edge strip 12, the aluminum film 13, the adhesive tape 14 and the acrylic pressing strip 15.

Detailed Description

The following further description is made in conjunction with the accompanying drawings and examples.

FIGS. 1-4 show: an ultra-large disc acrylic glass assembling and casting molding process comprises the molding steps of:

a. erecting a supporting rib plate: a steel pipe scaffold is adopted to support a plurality of acrylic rib plates, the acrylic rib plates 3 are enclosed into a first outer ring regular hexagon rib plate group structure 4, a second outer ring regular hexagon rib plate group structure 5, a middle ring regular hexagon rib plate group structure 6 and an inner ring regular hexagon rib plate group structure 7, the first outer ring regular hexagon rib plate group structure, the middle ring regular hexagon rib plate group structure 6 and the inner ring regular hexagon rib plate group structure 7 are sequentially and parallelly contracted from outside to inside, acrylic rib plates are respectively pulled at the center of the middle ring regular hexagon rib plate group structure and the vertex of the internal corner thereof, acrylic rib plates are correspondingly pulled between the vertex of the external corner and the vertex of the internal corner of the first outer ring regular hexagon rib plate group structure, the middle ring regular hexagon rib plate group structure 6 and the inner ring regular hexagon rib plate group structure 7, the second outer ring regular hexagon rib plate group structure 5 and the first outer ring regular hexagon rib plate group structure 4 are in the same circumference and are in a rotary dislocation arrangement, the vertex of the external corner of the second outer ring regular hexagonal rib plate group structure 5 is positioned on the symmetrical center line of the two external corner vertexes of the first outer ring regular hexagonal rib plate group structure, and the internal corner vertex of the second outer ring regular hexagonal rib plate group is superposed with the external corner vertex of the middle ring regular hexagonal rib plate group by means of borrowing; sequentially drawing acrylic rib plates between the vertexes of the external corners of the first and second outer-ring regular hexagonal rib plate group structures around the circumference; an acrylic transfer cylinder 8 is arranged at the intersection point position of the pulling connection of all acrylic rib plates, rib plate joints 9 are integrally cast on the transfer cylinder according to the pulling connection direction of the acrylic rib plates corresponding to the intersection point position, and 3mm joint seams 10 are reserved on the butt joint surfaces of the rib plate joints and the corresponding acrylic rib plates;

b. cutting a small piece of acrylic glass: cutting a corresponding small piece of acrylic glass 2 according to the triangular and polygonal shapes enclosed by the acrylic rib plates in the step a, wherein the small piece of acrylic glass is formed by externally expanding the thickness of the acrylic rib plates by subtracting 1-2mm from the half size of the thickness of the acrylic rib plates on the basis of the enclosed shape;

c. assembling an ultra-large disc acrylic glass mold: c, enabling the small pieces of acrylic glass to correspond to the shapes defined in the step a, enabling the side edges of the small pieces of acrylic glass to be supported on acrylic rib plates, symmetrically arranging and leaving disc joints 11 on the two adjacent side edges by the length center of the acrylic rib plates, and pressing aluminum films 13 on the disc joints in a pressing mode and adhering and pressing the disc joints by adhesive tapes 14; the acrylic edge strips 12 with right-angle corners in cross section are bonded, and the side surfaces of each acrylic rib plate and the lower end surface of the small acrylic glass lapped on the acrylic rib plate are bonded through the outer side surfaces of the two right-angle edges by using double-sided adhesive;

d. and (3) molding the joint of the rib plate: the downward seam of the joint seam 10 which is not covered by the acrylic edging is connected with an acrylic batten 15 in a winding way, or simply replaced by an aluminum film in a winding way and bonded and pressed by adhesive tapes;

e. integrally pouring a seam: arranging a pouring gate at the vertex position of the outermost circle of the regular polygonal structure, performing primary material injection on the splicing material from any vertex on one side and the symmetrical vertex on the other side or two vertexes beside the symmetrical position through an air compressor, performing secondary material injection on the splicing material from the vertexes on two sides of any vertex through the air compressor when the material is fed into the vertex position of the secondary outer circle of the regular polygonal structure, and sequentially finishing multiple material injection according to the feeding mode until the disc joint and the rib plate joint are filled with the casting material;

f. exhausting: observing the castable in each seam, checking bubbles, and removing the bubbles by using a tool needle;

g. compounding and curing: covering and insulating the ultra-large disc acrylic glass and the supporting rib plates at 28 +/-1 ℃ for 38 h;

h. and (3) finished product: and (4) removing the acrylic edge strips and the aluminum films, and polishing and flattening the cured joint.

In this embodiment, the multi-turn regular polygonal rib plate set structure can be sequentially arranged in parallel at equal intervals from inside to outside in an expanding manner. Acrylic rib plates are connected between the structural vertexes of the regular polygonal rib plate groups in a pulling mode, so that the supporting strength and the pulling strength are guaranteed, and the acrylic rib plates can be combined and arranged at will.