Machining process of arc plate

Abstract

The invention discloses a machining technology for an arc plate. The machining technology comprises the following steps that S1, an arc-shaped mold is manufactured; s2, machining a to-be-machined part, wherein a plurality of thin plates are sequentially stacked and attached to form the to-be-machined part, and the thickness of the to-be-machined part is the same as that of the needed arc plate; s3, pressure maintaining and shaping are conducted, specifically, the arc-shaped mold is placed in a sealing box, then a to-be-machined part is placed on the arc face of the arc-shaped mold, a flexible sealing cover of the sealing box covers the arc-shaped mold, and then an air pressure difference is formed between the inner side and the outer side of the flexible sealing cover; and the flexible sealing cover deforms and extrudes the to-be-machined part under the action of the air pressure difference so that the to-be-machined part can be completely attached to the arc face of the arc-shaped mold, the attaching state can be kept for a preset duration, and an arc plate matched with the arc face in radian can be formed. The problems that the surface of a product is uneven, irregular in radian and distorted due to the fact that an upper die and a lower die need to be matched in an existing arc plate machining process are solved.

Description

Technical Field

[0001] The invention relates to the technical field of plate manufacturing, and in particular to a processing technology for arc plates. Background Art

[0002] In furniture production, it is usually necessary to process the sheet into an arc shape that meets the needs of the application scenario. The sheet itself has a certain toughness, so it is necessary to use external force to shape the sheet; the current common processing method is as follows: make an arc mold, the arc mold is divided into an upper mold and a lower mold, the upper and lower molds are in an assembly relationship, and the gap between the molds is the shape of the arc plate to be processed; according to the thickness of the arc plate to be processed, a certain number of plates are selected, the contact surface is evenly coated with glue and stacked in the lower mold, and then the upper mold and the lower mold are assembled, and a certain pressure is applied to the upper and lower molds so that the arc plate and the mold are completely fitted. After a period of pressure maintenance, the glue is cured to obtain the required arc product. The disadvantage of this processing method is that the upper and lower molds require high matching precision, otherwise the product is unevenly stressed, which will cause defects such as uneven surface and irregular curvature of the product. Summary of the invention

[0003] In view of the defects of the above-mentioned prior art, the present invention provides a processing technology for arc plates to solve the problem that the existing processing technology for arc plates requires the cooperation of upper and lower molds, resulting in uneven product surface, irregular curvature and distortion.

[0004] The present invention is implemented by the following technical solutions:

[0005] A processing technology for an arc plate comprises the following steps:

[0006] S1. Arc-shaped mold production: the arc-shaped mold is formed with an upwardly arched arc surface, and the curvature of the arc surface matches the curvature of the arc plate to be processed;

[0007] S2. Processing of the workpiece: Select several thin plates, and evenly apply glue on the surfaces of the thin plates that need to be in contact, and then stack the thin plates in sequence to form the workpiece. The thickness of the workpiece is the same as the thickness of the required arc plate.

[0008] S3, pressure-maintaining and shaping: placing the arc-shaped mold in a sealing box, and then placing the workpiece to be processed on the arc surface of the arc-shaped mold, covering the sealing box with a flexible sealing cover, and then forming an air pressure difference between the inside and outside of the flexible sealing cover. Under the action of the air pressure difference, the flexible sealing cover deforms and squeezes the workpiece to be processed to completely fit the workpiece to the arc surface of the arc-shaped mold and maintain the fitting state for a preset time to shape an arc plate that matches the curvature of the arc surface.

[0009] Furthermore, in step S3, air inside the sealed box is extracted to form a negative pressure in the inner space of the sealed box, so that an air pressure difference is formed between the inner and outer sides of the flexible sealing cover.

[0010] Further, in step S3, a support plate is provided inside the sealed box, the arc-shaped mold is fixed on the support plate, a cavity is provided below the support plate, and the support plate is provided with a plurality of through holes connected to the cavity, so that a negative pressure is formed in the internal space of the sealed box by extracting air in the cavity.

[0011] Furthermore, in step S3, a negative pressure device is used to extract the air inside the cavity.

[0012] Furthermore, it also includes a controller for adjusting the negative pressure environment inside the sealed box by sending a control signal to the negative pressure device.

[0013] Furthermore, in step S3, the preset duration of the bonding state is determined according to the curvature and thickness of the arc plate to be processed and the glue curing time.

[0014] Further, in step S3, there is no sealing ring at the connection position between the flexible sealing cover and the sealing box.

[0015] Furthermore, in step S3, the flexible sealing cover is made of polyester fiber material.

[0016] Furthermore, in step S2, the thin plate is coated with white latex, and the amount of glue coated is controlled at 110-130 g / m2.

[0017] Furthermore, in step S1, according to the curvature of the arc plate to be processed, a plate with a corresponding curvature is processed using an artificial board, a plurality of plates are assembled into an arc-shaped mold by means of a screw and a nut, and the arc-shaped mold is ground.

[0018] Compared with the prior art, the beneficial effects of the present invention include at least:

[0019] The present invention uses a flexible sealing cover to fit the workpiece to be processed with the arc-shaped mold to achieve a shaping effect. The flexible sealing cover is deformed by the air pressure difference and exerts force evenly on the workpiece to be processed, so that the force on the surface of the workpiece to be processed is changed from rigid force to flexible force, so that the workpiece to be processed is more evenly stressed during the bending process; and the flexible force plays a certain protective role on the surface of the workpiece to be processed. During the bending process of the workpiece to be processed, cracking is not easy to occur. Since the workpiece to be processed is subjected to flexible force, the fit between the workpiece to be processed and the arc-shaped mold is also better; by changing the force mode on the surface of the workpiece to be processed, the present invention only needs one mold to shape the workpiece to be processed into the required arc, thereby solving the problem that the existing process requires the cooperation of upper and lower molds, which makes the product surface uneven, the arc irregular and distorted. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of the sealing box structure of an embodiment of the present invention, and the workpiece to be processed shown in the figure is in an intermediate state;

[0021] Figure 2 is a schematic diagram of deformation of a flexible sealing cover according to an embodiment of the present invention;

[0022] In the figure: 1, arc-shaped mold; 2, workpiece to be processed; 21, thin plate; 3, sealing box; 31, cavity; 4, flexible sealing cover; 5, support plate; 51, through hole. DETAILED DESCRIPTION

[0023] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided to make the present invention more comprehensive and complete and to fully convey the concepts of example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their repeated description will be omitted.

[0024] The words expressing positions and directions described in the present invention are all explained with reference to the accompanying drawings as examples, but they can be changed as needed, and all such changes are included in the protection scope of the present invention.

[0025] The present invention provides a processing technology for an arc plate, comprising the following steps:

[0026] S1. Making an arc-shaped mold 1: The arc-shaped mold 1 is formed with an arc surface that arches upward, and the curvature of the arc surface matches the curvature of the arc plate to be processed;

[0027] S2, processing of the workpiece 2: select a plurality of thin plates 21, and evenly apply glue to the bonding surfaces of the plurality of thin plates 21 that need to contact each other, and then stack the plurality of thin plates 21 in sequence to bond them into the workpiece 2, and the thickness of the workpiece 2 to be processed is the same as the thickness of the required arc plate;

[0028] S3, pressure-maintaining and shaping: placing the arc-shaped mold 1 in a sealing box 3, and then placing the workpiece 2 to be processed on the arc surface of the arc-shaped mold 1, covering the sealing box 3 with a flexible sealing cover 4, and then forming an air pressure difference between the inside and outside of the flexible sealing cover 4. Under the action of the air pressure difference, the flexible sealing cover 4 deforms and squeezes the workpiece 2 to be processed so as to completely fit the workpiece 2 to the arc surface of the arc-shaped mold 1 and maintain the fitting state for a preset time to shape an arc plate that matches the curvature of the arc surface.

[0029] In this embodiment, refer to Figure 1-Figure 2, first make an arc-shaped mold 1, which is formed with an upwardly arched arc surface, and the curvature of the arc surface matches the curvature of the arc plate to be processed. Therefore, the arc-shaped mold 1 can be adaptively changed according to the curvature of the arc plate to be processed, and has strong flexibility; a workpiece 2 to be processed with the same thickness as the required arc plate is formed by stacking several thin plates 21, so that a large degree of bending can be achieved. If a single plate with a predetermined thickness is directly used for bending, cracking is likely to occur, and the internal stress of the single plate is relatively balanced, and rebound is likely to occur after bending; and the workpiece 2 to be processed of the present invention is formed by stacking several thin plates 21, and the bending characteristics of the material are utilized. The thinner the plate, the better its toughness and the greater the degree of bending. In this way, a plate with a larger curvature can be processed, and the thickness of the arc plate is determined according to the required arc radius. The smaller the arc radius, the thinner the plate is used. The thickness of the thin plate 21 is preferably less than or equal to 3 mm. During the shaping process of the workpiece 2, the workpiece 2 to be processed is fitted with the arc-shaped mold 1 by means of the flexible sealing cover 4 to achieve the shaping effect. After the flexible sealing cover 4 is deformed by the air pressure difference, the force is uniformly applied to the workpiece to be processed, so that the force on the surface of the workpiece 2 to be processed changes from rigid force to flexible force, so that the workpiece 2 to be processed is more uniformly stressed during the bending process; and the flexible force plays a certain protective role on the surface of the workpiece 2 to be processed. During the bending process of the workpiece 2 to be processed, cracking is not easy to occur. Since the workpiece 2 to be processed is flexible, the fit between the workpiece 2 to be processed and the arc-shaped mold 1 is also better; by changing the force mode on the surface of the workpiece 2 to be processed, only one mold is needed to shape the workpiece 2 to be processed into the required curvature, which solves the problem that the existing process requires the cooperation of the upper and lower molds to make the product surface uneven, irregular in curvature and distorted. In addition, the flexible sealing cover 4 of the present invention is flexibly deformed under the air pressure difference, that is, the flexible sealing cover 4 can be adaptively changed according to the curvature of the arc-shaped mold 1, and can be adapted to molds with different curvatures, with better flexibility.

[0030] As a preferred embodiment, in step S3 , air inside the sealed box 3 is extracted to form a negative pressure inside the sealed box 3 , so that a pressure difference is formed between the inside and outside of the flexible sealing cover 4 .

[0031] In this embodiment, by extracting the air inside the sealed box 3, a negative pressure is formed inside the sealed box 3, so that a pressure difference is formed between the inside and outside of the flexible sealed cover 4, so that the pressure inside the sealed box 3 can be stably maintained, thereby ensuring that the workpiece 2 to be processed can fit the arc surface of the arc-shaped mold 1. It can be understood that the present invention can also place the sealed box 3 in another space, and then form a negative pressure environment in the space, so that a pressure difference is formed between the inside and outside of the flexible sealed cover 4, which can also achieve the purpose of the present invention.

[0032] As a preferred embodiment, in step S3, a support plate 5 is provided inside the sealed box 3, the arc-shaped mold 1 is fixed on the support plate 5, a cavity 31 is provided below the support plate 5, and the support plate 5 is provided with a plurality of through holes 51 connected to the cavity 31. By extracting the air in the cavity 31, a negative pressure is formed in the internal space of the sealed box 3.

[0033] In this embodiment, air is extracted from the cavity 31 at the bottom of the arc-shaped mold 1 to make the flexible sealing cover 4 deform evenly, so that the workpiece 2 can be more closely attached to the arc surface of the arc-shaped mold 1 .

[0034] As a preferred embodiment, in step S3, a negative pressure device is used to extract the air inside the cavity 31.

[0035] In this embodiment, after the sealing box 3 is covered with the flexible sealing cover 4, two spaces are formed in the sealing box 3, and the cavity 31 at the lower part of the support plate 5 is connected with the space where the upper arc-shaped mold 1 is located. The negative pressure device is started, and the air in the sealing box 3 is pumped away from top to bottom (the direction of the internal airflow is as shown in FIG. Figure 2 As shown by the arrow, the sealing box 3 forms a negative pressure environment, thereby forming an air pressure difference between the inside and outside of the flexible sealing cover 4.

[0036] As a preferred embodiment, it also includes a controller for adjusting the negative pressure environment inside the sealed box 3 by sending a control signal to the negative pressure device.

[0037] Since the smaller the radius of the arc is, the greater the degree of bending is, the greater the pressure it needs to be subjected to in order to deform the plate to the desired curvature. Therefore, in order to adapt to plates with different curvatures, the negative pressure environment inside the sealing box 3 is adjusted by the controller so that the air pressure difference formed on the inner and outer sides of the flexible sealing cover 4 can cause the flexible sealing cover 4 to deform flexibly, so as to fit the workpiece 2 to be processed onto the arc-shaped mold 1.

[0038] As a preferred embodiment, in step S3, the preset duration of the bonding state is determined according to the curvature, thickness and glue curing time of the arc plate to be processed. In order to improve the shaping effect of the workpiece 2 to be processed, the time for the workpiece 2 to be processed and the arc-shaped mold 1 to maintain the bonding state cannot be too short or too long. The preset duration of the bonding state is determined according to the curvature, thickness and glue curing time of the arc plate, which can reduce the bending rebound amount, achieve a larger forming range, and achieve large-curvature bending forming.

[0039] As a preferred embodiment, in step S3, there is no sealing ring at the connection position between the flexible sealing cover 4 and the sealing box 3. After the air inside the sealing box 3 is extracted, the sealing ring is provided to ensure that the negative pressure environment of the sealing box 3 can be stably maintained.

[0040] As a preferred embodiment, in step S3, the flexible sealing cover 4 is made of polyester fiber. In this embodiment, the flexible sealing cover 4 is made of polyester fiber, so that the flexible sealing cover 4 has certain toughness, airtightness, high strength, high wear resistance, aging resistance and other properties. Of course, in other embodiments, the flexible sealing cover 4 can also be made of other flexible materials, as long as the flexible sealing cover 4 can be flexibly deformed under the air pressure difference.

[0041] As a preferred embodiment, in step S2, the thin plate 21 is coated with white latex, and the amount of glue applied is controlled at 110-130 g / ㎡. In this embodiment, before coating the thin plate 21 with glue, foreign matter and dust on the surface of the thin plate 21 need to be cleaned, and then the glue is applied, so as to ensure that the thin plate 21 is firmly bonded, and the amount of glue applied is controlled at 110-130 g / ㎡, so as to ensure that the thin plates 21 have a better fit.

[0042] As a preferred embodiment, in step S1, according to the curvature of the arc plate to be processed, a plate with a corresponding curvature is processed using an artificial board, several plates are assembled into an arc-shaped mold 1 by means of screws and nuts, and the arc-shaped mold 1 is ground.

[0043] In this embodiment, a plate with a corresponding curvature is processed by artificial board, and the plate has an arc structure that arches upward. In this way, after assembling several plates, an arc surface that arches upward can be formed. Compared with wood, artificial board has the advantages of large format, small deformation, smooth and clean surface, and no anisotropy. Several plates are assembled into an arc-shaped mold 1 by screws and nuts, which is convenient for processing and later disassembly. After the arc-shaped mold 1 is made, it is ground to ensure that the arc surface of the arc-shaped mold 1 is smooth. In this way, during the shaping process, the workpiece 2 to be processed can fit closely with the arc surface, and the shaping effect is good. Of course, in other embodiments, plastics or metals can also be used to replace artificial boards to make the arc-shaped mold 1.

[0044] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, substitute and modify the above embodiments within the scope of the invention without departing from the principles and purpose of the present invention. All such changes should fall within the scope of protection of the claims of the present invention.

Claims

1. A processing technology for arc plate, characterized in that: The following steps are involved: S1. Making an arc-shaped mold (1): the arc-shaped mold (1) is formed with an arc surface that arches upward, and the curvature of the arc surface matches the curvature of the arc plate to be processed; S2, processing of the workpiece (2): select a plurality of thin plates (21), and evenly apply glue to the bonding surfaces of the plurality of thin plates (21) that need to be in contact, and then stack the plurality of thin plates (21) in sequence to bond them into the workpiece (2), wherein the thickness of the workpiece (2) is the same as the thickness of the required arc plate; S3, pressure-maintaining shaping: placing the arc-shaped mold (1) in a sealing box (3), then placing the workpiece (2) to be processed on the arc surface of the arc-shaped mold (1), covering the sealing box (3) with a flexible sealing cover (4), and then forming an air pressure difference between the inside and outside of the flexible sealing cover (4). Under the action of the air pressure difference, the flexible sealing cover (4) deforms and squeezes the workpiece (2) to be processed so that the workpiece (2) and the arc surface of the arc-shaped mold (1) are completely attached and maintained in the attached state for a preset time, so as to shape an arc plate that matches the curvature of the arc surface.

2. The processing technology of arc plate according to claim 1 is characterized in that: In step S3, air inside the sealed box (3) is extracted so that a negative pressure is formed in the internal space of the sealed box (3), so that an air pressure difference is formed between the inside and outside of the flexible sealing cover (4).

3. The processing technology of arc plate according to claim 1, characterized in that: In step S3, a support plate (5) is provided inside the sealed box (3), the arc-shaped mold (1) is fixed on the support plate (5), a cavity (31) is provided below the support plate (5), and the support plate (5) is provided with a plurality of through holes (51) connected to the cavity (31), so that a negative pressure is formed in the internal space of the sealed box (3) by extracting air in the cavity (31).

4. The processing technology of arc plate according to claim 3 is characterized in that: In step S3, a negative pressure device is used to extract the air inside the cavity (31).

5. The processing technology of arc plate according to claim 4 is characterized in that: It also includes a controller for adjusting the negative pressure environment inside the sealed box (3) by sending a control signal to the negative pressure device.

6. The processing technology of circular arc plate according to claim 1, characterized in that: In step S3, the preset duration of the bonding state is determined according to the curvature and thickness of the arc plate to be processed and the glue curing time.

7. The processing technology of circular arc plate according to claim 1, characterized in that: In step S3, there is no sealing ring at the connection position between the flexible sealing cover (4) and the sealing box (3).

8. The processing technology of circular arc plate according to claim 1, characterized in that: In step S3, the flexible sealing cover (4) is made of polyester fiber material.

9. The processing technology of circular arc plate according to claim 1, characterized in that: In step S2, the thin plate (21) is coated with white latex, and the amount of glue coated is controlled to be 110-130 g / m2.

10. The processing technology of arc plate according to claim 1, characterized in that: In step S1, according to the curvature of the arc plate to be processed, a plate with a corresponding curvature is processed using an artificial board, a plurality of plates are assembled into an arc-shaped mold (1) by means of a screw and a nut, and the arc-shaped mold (1) is ground.

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