A hot bending fixture for large acrylic sheets

Abstract

This application discloses a hot bending fixture for large acrylic sheets, comprising: a carrier plate, a buffer layer, a load-bearing frame, and a base. The buffer layer is disposed on the carrier plate, the carrier plate is disposed at one end of the load-bearing frame, and the other end of the load-bearing frame is detachably disposed on the base. When the hot bending fixture is placed on the ground, the base is used to control its own lifting and lowering to ensure that the hot bending fixture conforms to the ground. By setting a buffer layer on the carrier plate, this application can effectively solve the problem of surface scratches and impact breakage of acrylic sheets during lifting or heated pressing. At the same time, by placing the load-bearing frame on the self-lifting base, real-time force support between the hot bending fixture and the ground can be achieved, overcoming the problem of the bottom surface of the hot bending fixture not being able to synchronize with the flatness of the ground, thus improving the safety of use.

Description

Technical Field

[0001] This invention relates to the field of acrylic glass processing technology, and in particular to a hot bending fixture for large acrylic glass sheets. Background Technology

[0002] Polymethyl methacrylate (PMMA), also known as plexiglass, is a transparent polymer material with excellent comprehensive properties, widely used in traffic noise barriers, transparent buildings, thermal insulation curtain walls, and aircraft windows. Current technology for hot bending large plexiglass sheets typically involves placing PMMA on a mold, pushing it into an oven, and allowing it to cool after heating and shaping to obtain large plexiglass sheets with specific curvature or shapes.

[0003] Existing molds typically have steel surfaces. During the lifting or pressing of acrylic sheets, these steel surfaces can easily scratch the acrylic sheet surface or cause it to shatter due to localized impacts. In addition, the unevenness of the production workshop floor is often poor, making it difficult for some stress points of the mold to be fully attached to the bottom surface, posing certain safety hazards. Utility Model Content

[0004] The purpose of this application is to provide a hot bending fixture for large acrylic sheets, which aims to solve the problems of high loss rate of acrylic sheets caused by the use of steel surfaces in existing molds, and the inability to synchronize the flatness of the ground and the bottom surface of the mold.

[0005] To achieve the above objectives, this application provides a hot bending fixture for large acrylic sheets, comprising: a carrier plate, a buffer layer, a load-bearing frame, and a base. The buffer layer is disposed on the carrier plate, the carrier plate is disposed at one end of the load-bearing frame, and the other end of the load-bearing frame is detachably disposed on the base. When the hot bending fixture is placed on the ground, the base is used to control its own lifting and lowering to make the hot bending fixture conform to the ground.

[0006] Optionally, the hot bending fixture further includes a friction layer disposed on the buffer layer.

[0007] Optionally, the thickness of the friction layer is less than the thickness of the buffer layer.

[0008] Optionally, there are multiple load-bearing frames, which are spaced apart from each other along the length of the carrier plate, and the carrier plate is disposed on the multiple load-bearing frames.

[0009] Optionally, the load-bearing frame includes support columns, which are arranged in pairs and spaced apart from each other. The base has positioning holes, one end of each support column is connected to the carrier plate, and the other end is detachably disposed in the positioning hole.

[0010] Optionally, the load-bearing frame further includes inclined beams and longitudinal beams. The inclined beams are arranged in pairs and intersecting between the support columns. The longitudinal beams are arranged between the carrier plate and the inclined beams.

[0011] Optionally, the longitudinal beam includes a first longitudinal beam, one end of which is connected to the carrier plate, and the other end is connected to the intersection of the two pairs of inclined beams.

[0012] Optionally, the longitudinal beam further includes a second longitudinal beam, one end of which is connected to the carrier plate, and the other end is centrally located between the inclined beam and the first longitudinal beam relative to the support column.

[0013] Optionally, the longitudinal beam further includes a third longitudinal beam, the two ends of which are respectively connected to the intersecting inclined beams.

[0014] Optionally, the first longitudinal beam, the second longitudinal beam, and the third longitudinal beam are arranged parallel to the support column on the inclined beam, and the top ends of the first longitudinal beam, the second longitudinal beam, and the support column correspond to the shape of the bottom surface of the carrier plate.

[0015] This application effectively solves the problem of surface scratches and impact cracks in plexiglass sheets during lifting or heating by setting a buffer layer on the carrier plate. At the same time, by setting the load-bearing frame on a self-lifting base, real-time force support between the hot bending fixture and the ground can be achieved, overcoming the problem that the flatness of the bottom surface of the hot bending fixture and the ground cannot be synchronized, thus improving the safety of use. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of a hot bending fixture provided in an embodiment of the present invention.

[0017] Figure 2 This is a three-dimensional structural diagram of a base provided in an embodiment of the present invention.

[0018] Figure 3 This is an exploded structural diagram of a hot bending fixture provided in an embodiment of the present invention.

[0019] Figure 4 This is a three-dimensional structural diagram of a load-bearing frame provided in an embodiment of the present invention.

[0020] Explanation of reference numerals in the attached figures:

[0021] 10. Carrier plate; 20. Buffer layer; 30. Load-bearing frame; 31. Support column; 32. Inclined beam; 33. Longitudinal beam; 331. First longitudinal beam; 332. Second longitudinal beam; 333. Third longitudinal beam; 40. Base; 41. Positioning hole; 50. Friction layer. Detailed Implementation

[0022] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0023] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, components, features, and elements with the same names in different embodiments of this application may have the same meaning or different meanings, the specific meaning of which must be determined by its interpretation in that specific embodiment or further in conjunction with the context of that specific embodiment.

[0024] It should be understood that although the terms first, second, third, etc., may be used herein to describe various information, this information should not be limited to these terms. These terms are used only to distinguish information of the same type from one another. For example, without departing from the scope of this document, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the word "if," as used herein, can be interpreted as "when," "when," or "in response to determination." Furthermore, as used herein, the singular forms "a," "an," and "the" are intended to also include the plural forms unless the context indicates otherwise. It should be further understood that the terms "comprising," "including," indicate the presence of the stated feature, step, operation, element, component, item, kind, and / or group, but do not exclude the presence, occurrence, or addition of one or more other features, steps, operations, elements, components, items, kinds, and / or groups. The terms "or" and "and / or" as used herein are to be interpreted as inclusive, or mean any one or any combination thereof. Therefore, "A, B, or C" or "A, B, and / or C" means "any one of the following: A; B; C; A and B; A and C; B and C; A, B, and C". Exceptions to this definition will only occur if the combination of elements, functions, steps, or operations is inherently mutually exclusive in some way.

[0025] It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0026] In the following description, the use of suffixes such as "module," "part," or "unit" to denote elements is solely for the purpose of illustrative purposes and has no specific meaning in itself. Therefore, "module," "part," or "unit" may be used interchangeably.

[0027] Please refer to Figure 1 , Figure 1A three-dimensional structural diagram of a hot bending fixture for acrylic sheets is shown, including: a carrier plate 10, a buffer layer 20, a load-bearing frame 30, and a base 40. The buffer layer 20 is disposed on the carrier plate 10, the carrier plate 10 is disposed at one end of the load-bearing frame 30, and the other end of the load-bearing frame 30 is detachably disposed on the base 40. Specifically, in this embodiment, the carrier plate 10 is used as a medium for preparing large acrylic sheets for bending, and its shape is an arc-shaped arch. The thickness and curvature of the carrier plate 10 can be customized according to the weight and requirements of common large acrylic sheets. The buffer layer 20 has a shock-absorbing and cushioning function, which can absorb and dissipate instantaneous pressure to protect the large acrylic sheets from scratches and physical impacts. The main body of the load-bearing frame 30 is made of metal, such as steel or aluminum. The base 40 can be a lifting mechanism equipped with a lifting motor or an adaptive spring structure, which can adaptively adjust the up and down stroke according to the pressure above, that is, control its own lifting and lowering, thereby ensuring that when the hot bending fixture is placed on the ground or during the hot bending process, the bottom surface of the hot bending fixture is always in compact contact with the ground and tightly adheres to the ground, significantly improving the safety of use.

[0028] Optionally, the thickness of the buffer layer 20 is preferably 10 mm or more, but this is not a limiting factor. The buffer layer 20 can be manufactured from different materials according to actual needs, preferably elastic materials or foam, or a combination of the two. Among them, the elastic material can be rubber, silicone, or polyurethane. For foam, attention should be paid to the shape, diameter, distribution, and quantity of the foam. Preferably, in this embodiment, a non-foamed polyurethane elastic material is selected, with a thickness of 15 mm. It is understood that the buffer layer 20 made of this material has advantages such as high strength, high elasticity, good wear resistance, solvent resistance, and hydrolysis resistance. A thickness of 15 mm can ensure a better cushioning and shock absorption effect.

[0029] Optionally, the hot bending fixture also includes a friction layer 50, which is disposed on the buffer layer 20. Specifically, in this embodiment, the friction layer 50 is disposed on the buffer layer 20, serving as a direct contact surface with the large acrylic sheet, providing a certain amount of friction while ensuring good sliding performance of the large acrylic sheet over it. Therefore, the friction layer 50 has an extremely low coefficient of friction and moderate elasticity. Preferably, the friction layer 50 can be a sheet of polytetrafluoroethylene or a modified form thereof.

[0030] Optionally, the carrier plate 10, the buffer layer 20, and the friction layer 50 can be connected to each other by an adhesive or an intermediate film layer, such as PVB, EVA, PU, ​​etc., without being limited to any one material.

[0031] Optionally, the thickness of the friction layer 50 is less than the thickness of the buffer layer 20. Specifically, in this embodiment, the friction layer 50 mainly serves to provide a certain degree of anti-slip properties and increase the sliding effect, while the buffer layer 20 mainly serves to provide sufficient cushioning and shock absorption. Therefore, the thickness of the friction layer 50 should not be greater than the thickness of the buffer layer 20 to avoid the excessively thick friction layer 50 affecting the cushioning and shock absorption effect of the buffer layer 20. Preferably, the thickness of the friction layer 50 is greater than 5 mm and less than 10 mm, and the thickness of the buffer layer 20 is greater than 10 mm and less than 16 mm.

[0032] Optionally, there are multiple load-bearing frames 30, which are spaced apart from each other along the length of the carrier plate 10, and the carrier plate 10 is mounted on the multiple load-bearing frames 30. Specifically, in this embodiment, there are multiple load-bearing frames 30, and the carrier plate 10 has a length direction and a width direction. In the illustrated structure, the multiple load-bearing frames 30 are spaced apart from each other along the length of the carrier plate 10, and the multiple load-bearing frames 30 are welded together at the bottom edge of the carrier plate 10 along the length direction to achieve a fixed connection between the carrier plate 10 and the multiple load-bearing frames 30. Preferably, the load-bearing frame 30 is made entirely of I-beams with excellent mechanical properties.

[0033] Please refer to Figure 2 and Figure 3 The load-bearing frame 30 includes support columns 31, which are arranged in pairs and spaced apart. A positioning hole 41 is provided on the base 40. One end of each support column 31 is connected to the carrier plate 10, and the other end is detachably disposed within the positioning hole 41. Specifically, in this embodiment, there are multiple support columns 31, arranged in pairs and spaced apart. The top end face of each support column 31 is welded to the bottom surface of the carrier plate 10, and the bottom end of each support column 31 is detachably inserted into the positioning hole 41 by means of insertion. Thus, since the support columns 31 are easy to install on or remove from the base 40, for uneven ground, the base 40 can be adaptively replaced to ensure that the bottom surface of the hot bending fixture is always in compact contact with the ground and adheres to the ground, resulting in high convenience.

[0034] Please refer to Figure 3 The load-bearing frame 30 also includes diagonal beams 32 and longitudinal beams 33. The diagonal beams 32 are arranged in pairs, intersecting between the support columns 31. The longitudinal beams 33 are arranged between the carrier plate 10 and the diagonal beams 32. Specifically, in this embodiment, the two diagonal beams 32 are arranged in an "X" shape between the two support columns 31, thus providing good structural stability. In addition, the longitudinal beams 33 are arranged between the carrier plate 10 and the diagonal beams 32, further improving the structural stability of the load-bearing frame 30 and enhancing its safety in use.

[0035] Furthermore, the two ends of the inclined beam 32 are connected to the top of one support column 31 and the bottom of another support column 31 by welding, so that the "X" shape formed by the two inclined beams 32 has the largest unfolded area, and relatively ideal structural stability can be obtained.

[0036] Please refer to Figure 4 The longitudinal beam 33 includes a first longitudinal beam 331, one end of which is connected to the carrier plate 10, and the other end is connected to the intersection of two pairs of inclined beams 32. Specifically, in this embodiment, the longitudinal beam 33 includes a first longitudinal beam 331. In the illustrated structure, the bottom end of the first longitudinal beam 331 is connected to the intersection of the two inclined beams 32, and the top end of the first longitudinal beam 331 is connected to the center of the arc surface formed by the carrier plate 10. In this way, the first longitudinal beam 331 can reinforce the intersection of the two intersecting inclined beams 32 to the carrier plate 10, thereby improving the structural stability of the load-bearing frame 30.

[0037] Optionally, the longitudinal beam 33 further includes a second longitudinal beam 332. One end of the second longitudinal beam 332 is connected to the carrier plate 10, and the other end is centrally located between the inclined beam 32 and the first longitudinal beam 331 relative to the support column 31. Specifically, in this embodiment, the longitudinal beam 33 further includes a second longitudinal beam 332. In the illustrated structure, for a single load-bearing frame 30, there are two second longitudinal beams 332. The bottom end of the second longitudinal beam 332 is located between the support column 31 and the first longitudinal beam 331, and is centrally located on the inclined beam 32 relative to the support column 31 and the first longitudinal beam 331 by welding. The top end of the second longitudinal beam 332 is connected to the bottom surface of the carrier plate 10 by welding. In this way, the second longitudinal beam 332 can reinforce the area above the intersection of the inclined beam 32 on the carrier plate 10, thereby improving the structural stability of the load-bearing frame 30.

[0038] Optionally, the longitudinal beam 33 further includes a third longitudinal beam 333, the two ends of which are connected to the intersecting diagonal beams 32. Specifically, in this embodiment, the longitudinal beam 33 further includes a third longitudinal beam 333. In the illustrated structure, for a single load-bearing frame 30, there are two third longitudinal beams 333. The two third longitudinal beams 333 are respectively arranged within the two triangles formed by the two diagonal beams 32 and the two support columns 31, and the two ends of each third longitudinal beam 333 are connected to the two diagonal beams 32. In this way, the third longitudinal beams 333 can reinforce the two diagonal beams 32, thereby improving the structural stability of the load-bearing frame 30.

[0039] Optionally, the first longitudinal beam 331, the second longitudinal beam 332, and the third longitudinal beam 333 are arranged parallel to the support column 31 on the inclined beam 32, and the tops of the first longitudinal beam 331, the second longitudinal beam 332, and the support column 31 correspond to the shape of the bottom surface of the carrier plate 10. Specifically, in this embodiment, the two support columns 31 are arranged at intervals in the vertical direction, and the two inclined beams 32 are arranged intersectingly between the two support columns 31. The first longitudinal beam 331, the second longitudinal beam 332, and the third longitudinal beam 333 are arranged parallel to the extension direction of the support column 31 on the inclined beam 32. That is, the support column 31, the first longitudinal beam 331, the second longitudinal beam 332, and the third longitudinal beam 333 of a single load-bearing frame 30 are arranged in the vertical direction, while the inclined beam 32 is arranged at an inclination. Furthermore, since the carrier plate 10 in this application is an arc-shaped arch, the tops of the first longitudinal beam 331, the second longitudinal beam 332, and the support column 31, which are connected to the bottom surface of the carrier plate 10, protrude outwards, forming an arc-shaped arch structure corresponding to the curvature of the bottom surface of the carrier plate 10. Thus, when the carrier plate 10 is placed on the load-bearing frame 30, the bottom surface of the curved carrier plate 10 can completely fit against the end face of the load-bearing frame 30, which reduces the complexity of subsequent welding processes and improves the overall structural stability of the hot bending fixture after welding.

[0040] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A hot bending fixture for large acrylic sheets, characterized in that, include: The fixture comprises a carrier plate, a buffer layer, a load-bearing frame, and a base. The buffer layer is disposed on the carrier plate, the carrier plate is disposed at one end of the load-bearing frame, and the other end of the load-bearing frame is detachably disposed on the base. When the hot bending fixture is placed on the ground, the base is used to control its own lifting and lowering so that the hot bending fixture conforms to the ground.

2. The thermal bending tooling of claim 1, wherein, The hot bending fixture also includes a friction layer, which is disposed on the buffer layer.

3. The thermal bending tooling of claim 2, wherein, The thickness of the friction layer is less than the thickness of the buffer layer.

4. The thermal bending tooling of claim 1, wherein, There are multiple load-bearing frames, which are spaced apart from each other along the length of the carrier plate, and the carrier plate is placed on the multiple load-bearing frames.

5. The thermal bending tooling of any one of claims 1 or 4, wherein, The load-bearing frame includes support columns, which are arranged in pairs and spaced apart from each other. The base has positioning holes. One end of each support column is connected to the carrier plate, and the other end is detachably installed in the positioning hole.

6. The thermal bending tooling of claim 5, wherein, The load-bearing frame also includes inclined beams and longitudinal beams. The inclined beams are arranged in pairs and intersecting between the support columns. The longitudinal beams are arranged between the carrier plate and the inclined beams.

7. The thermal bending tooling of claim 6, wherein, The longitudinal beam includes a first longitudinal beam, one end of which is connected to the carrier plate, and the other end is connected to the intersection of the two pairs of inclined beams.

8. The thermal bending tooling of claim 7, wherein, The longitudinal beam also includes a second longitudinal beam, one end of which is connected to the carrier plate, and the other end is centrally located between the inclined beam and the first longitudinal beam relative to the support column.

9. The thermal bending tooling of claim 8, wherein, The longitudinal beam also includes a third longitudinal beam, the two ends of which are respectively connected to the intersecting inclined beams.

10. The hot bending fixture according to claim 9, characterized in that, The first, second, and third longitudinal beams are arranged parallel to the support column on the inclined beam, and the tops of the first, second, and support columns correspond to the shape of the bottom surface of the carrier plate.

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