Hot press molding process of angular profile

Abstract

The invention discloses a hot-press forming process of an angular profile, which comprises the following steps: preparing a mold device and an angular profile to be subjected to hot-press forming, respectively pressing a first elastic support piece and a second elastic support piece into a cable cavity and a clamping groove of the angular profile, heating the temperature in heating equipment to the complete softening point temperature of the angular profile, and then pressing the first elastic support piece and the second elastic support piece into the cable cavity and the clamping groove of the angular profile; the prepared angular profile is put into heating equipment to be heated till the angular profile is completely softened; and the completely softened angular profile is rapidly loaded into a cavity of the mold device, extrusion mold closing is carried out till mold closing is complete, hot press forming is completed, and finally cooling and mold stripping are carried out. According to the process, integrated forming of the corner connecting structure is achieved, extra angular plug connectors and complex corner connecting work are not needed when the lamp box frame is installed, the installation efficiency and quality of the whole lamp box frame are improved, meanwhile, the smooth forming effect of the corners of the whole lamp box frame is achieved, and the overall attractiveness is improved.

Description

Technical Field

[0001] The invention relates to the technical field of profile processing, in particular to a hot pressing forming process for angular profiles. Background Art

[0002] In existing building decoration, cable laying and other projects, angle profiles are often needed. The profiles usually have a cable cavity for cables to pass through and a clamping groove for clamping and fixing the curtain. However, the existing angle profiles are mostly linear structures, and their corner connections require additional work and materials, resulting in certain costs and time waste; for example, at the corners of the light box frame, a set of angle connectors are required to connect two sets of perpendicular linear angle profiles. The angle connectors often cannot meet the requirements of efficient and high-quality installation, nor can they meet the smoother molding effect of the entire light box frame at the corners, making it difficult to achieve the expected overall aesthetics. Summary of the invention

[0003] In order to solve the above technical problems, the present invention provides a hot pressing forming process for angle profiles, which converts straight angle profiles into corner connection structures through hot pressing forming technology, making installation more convenient and quick and making the overall structure more beautiful.

[0004] The technical solution of the present invention is: to form an angle profile from a linear structure into an angle connection structure by hot pressing, wherein the angle profile has a cable cavity for passing cables and a clamping groove for clamping and fixing the curtain, and two groups of clamping grooves are respectively located on both sides of the angle profile and have openings facing outwards, and the cable cavity and the clamping groove extend along the length direction of the angle profile; and the steps are as follows:

[0005] Step 1: prepare a mold device for hot pressing and prepare an angular profile to be hot pressed, including pressing a first elastic support member and a second elastic support member into the cable cavity and the clamping groove respectively; the first elastic support member and the second elastic support member are both high temperature resistant to play a supporting role during the hot pressing process;

[0006] Step 2: After the temperature inside the heating device is heated to the complete softening point temperature of the angle profile, the prepared angle profile is placed in the heating device and heated until the angle profile is completely softened;

[0007] Step 3: quickly load the completely softened angle profile into the cavity of the mold device and perform extrusion and mold closing until the mold is completely closed to complete the hot pressing forming of the angle profile;

[0008] Step 4: The formed angle profile is cooled and removed from the mold.

[0009] Further: in step 2, the angle profile is made of ABS material. After the temperature inside the heating device is heated to 180° C., the angle profile is placed in the heating device and heated for two minutes to complete softening.

[0010] Further: in step 2, the angle profile is made of PVC material. After the temperature inside the heating device is heated to 200° C., the angle profile is placed in the heating device and heated for two and a half minutes to complete softening.

[0011] Further: the mold device includes an upper mold and a lower mold, and the end faces of the upper mold and the lower mold that are connected to each other are respectively provided with an upper molding groove and a lower molding groove, and the cavity formed by the combination of the upper molding groove and the lower molding groove has the appearance of a corner connection structure.

[0012] Further: the cross-section of the angle profile is an arc arch, including an arc surface extending along the length direction of the angle profile, and the arc surface is concave inward along the top to form a lamp groove; the upper molding groove has an arc concave surface corresponding to the arc surface, and the arc concave surface is provided with a convex strip extending toward the lamp groove.

[0013] Furthermore: the angle profile also includes a mounting surface connected to the two edges of the arc surface, and the mounting surface and the snap-in groove are accommodated in the lower forming groove.

[0014] Furthermore: a guide structure is provided between the upper die and the lower die, and the guide structure has a guiding and positioning function during the movement of the upper die relative to the lower die.

[0015] Furthermore: a cylinder is fixedly arranged above the upper die, and the upper die moves relative to the lower die under the drive of the cylinder.

[0016] The beneficial technical effect of the present invention is: by heating and applying pressure, the straight angle profile is reshaped in a specific mold device, thereby realizing the integrated molding of the corner connection structure, without the need for additional angle connectors and complicated corner connection work, thereby improving the installation efficiency and quality of the entire light box frame, and greatly reducing costs and time consumption; through the hot pressing forming process, the corner connection can be seamlessly connected, achieving a smooth molding effect at the corner of the entire light box frame, and improving the overall aesthetics. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the angle profile of the present invention;

[0018] Figure 2 It is a schematic structural diagram of a mold device for hot pressing and forming an angle profile of the present invention;

[0019] Figure 3 It is a schematic diagram of the structure of the upper mold and the lower mold body of the present invention;

[0020] Among them: 1. curved surface; 2. mounting surface; 3. cable cavity; 4. lamp slot; 5. snap-in slot; 6. mold device; 61. upper mold; 611. upper molding slot; 612. curved concave surface; 613. convex strip; 62. lower mold; 621. lower molding slot; 63. guide rod; 7. mold clamping bracket; 8. cylinder; 9. first elastic support member; 10. second elastic support member. DETAILED DESCRIPTION

[0021] In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the specific implementation methods of the present invention are further described in detail below in conjunction with the drawings and examples. The following examples are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0022] like Figure 1 As shown, the hot pressing forming process of the angle profile of the present invention, the cross-section of the angle profile is arc-shaped, including an arc-shaped surface 1 and a mounting surface 2 connected to the two edges of the arc-shaped surface 1, and a mounting cavity is provided between the arc-shaped surface 1 and the mounting surface 2, including cable cavities 3 respectively located on both sides of the mounting cavity, and two groups of cable cavities 3 are connected along the extension direction of the angle profile for the cable to pass through; the arc-shaped surface 1 is recessed inward along the top to form a lamp groove 4, and the lamp groove 4 is used to arrange the light-emitting components of the light box frame; the arc-shaped surface 1 and the mounting surface 2 are respectively provided with a clamping groove 5 opening on both sides, and the clamping groove 5 is used to clamp and fix the curtains that need to be displayed, such as propaganda cloth and display screens, to the light box frame; the lamp groove 4 and the clamping groove 5 both extend in the same direction as the cable cavity 3.

[0023] The angle profile is formed from a linear structure into a corner connection structure by hot pressing. The corner connection structure is located at the corner of the light box frame and is used to connect two sets of perpendicular frame bars in the light box frame. That is, the angle profile is softened by a heating device and then hot pressed by a mold device 6.

[0024] like Figure 2 and Figure 3 As shown, the mold device 6 includes an upper mold 61 and a lower mold 62. The end faces of the upper mold 61 and the lower mold 62 are respectively provided with an upper molding groove 611 and a lower molding groove 621. After the mold is closed, the cavity formed by the upper molding groove 611 and the lower molding groove 621 has the appearance of a corner connection structure.

[0025] Specifically, the upper molding groove 611 has an arc-shaped concave surface 612 corresponding to the arc-shaped surface 1, and the arc-shaped concave surface 612 is provided with a convex strip 613 extending toward the lower mold 62 at a position corresponding to the lamp groove 4, and the convex strip 613 matches the lamp groove 4; the lower molding groove 621 is used to accommodate the mounting surface 2 and the snap-in groove 5.

[0026] Furthermore, a guide structure is provided between the upper die 61 and the lower die 62, and the guide structure has a guiding and positioning function when the upper die 61 moves relative to the lower die 62. The guide structure includes a guide rod 63 provided on the lower die 62 and a guide rod through hole on the upper die 61 for the guide rod 63 to pass through.

[0027] In this embodiment, the lower mold 62 is fixedly disposed on a base of a mold clamping bracket 7 , and a cylinder 8 is fixedly disposed on the mold clamping bracket 7 above the upper mold 61 . The upper mold 61 moves relative to the lower mold 62 under the drive of the cylinder 8 .

[0028] The forming process steps of the angle profile of the present invention are as follows:

[0029] Step 1: Material Preparation

[0030] Prepare the angular profile to be hot-pressed, including pressing the first elastic support member 9 and the second elastic support member 10 into the cable cavity 3 and the clamping groove 5 respectively; in this embodiment, the first elastic support member 9 includes a spring tube and a leather sleeve sleeved on the outside of the spring tube, and the second elastic support member 10 is made of silicone strip; the first elastic support member 9 and the second elastic support member 10 are both resistant to high temperatures to play a supporting role during the hot pressing process to prevent the cable cavity 3 and the clamping groove 5 from excessive deformation during the hot pressing process, which affects the subsequent cable threading and curtain clamping and fixation.

[0031] Step 2: Heat to soften

[0032] After the temperature inside the heating equipment is heated to the complete softening point temperature of the angle profile, the prepared angle profile is placed in the heating equipment and heated until the angle profile is completely softened; the heating time is determined according to the complete softening point temperature of the angle profile. When the angle profile is made of ABS material, it can be softened by heating at an internal temperature of 180°C for two minutes; when the angle profile is made of PVC material, it can be softened by heating at an internal temperature of 200°C for two and a half minutes.

[0033] Step 3: Hot Pressing

[0034] The softened angle profile is placed in the lower forming groove 621, and the upper die 61 is pressed down by the pneumatic stroke of the cylinder 8. The upper die 61 continues to move toward the lower die 62 under the guidance and positioning of the guide structure, and the angle profile gradually deforms in the cavity until the upper die 61 and the lower die 62 are completely closed, and the hot pressing forming of the angle profile is completed.

[0035] Step 4: Cool and remove from the mold.

[0036] The formed angle profile is removed from the mold after cooling, thereby completing the hot pressing operation of the angle profile.

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the technical principles of the present invention, and these improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. The hot pressing forming process of the angle profile is used to form the angle profile from a straight structure into an angle connection structure by hot pressing, and is characterized by: The angle profile has a cable cavity (3) for passing cables and a clamping groove (5) for clamping and fixing the curtain cloth, two groups of clamping grooves (5) are respectively located on both sides of the angle profile and have openings facing outwards, and the cable cavity (3) and the clamping grooves (5) extend along the length direction of the angle profile; the method comprises the following steps: Step 1: preparing a mold device (6) for hot pressing and preparing an angular profile to be hot pressed, including respectively pressing a first elastic support member (9) and a second elastic support member (10) into the cable cavity (3) and the clamping groove (5); the first elastic support member (9) and the second elastic support member (10) are both resistant to high temperatures to play a supporting role during the hot pressing process; Step 2: After the temperature inside the heating device is heated to the complete softening point temperature of the angle profile, the prepared angle profile is placed in the heating device and heated until the angle profile is completely softened; Step 3: quickly loading the completely softened angle profile into the cavity of the mold device (6) and performing extrusion and mold closing until the mold is completely closed, thereby completing the hot pressing forming of the angle profile; Step 4: The formed angle profile is cooled and removed from the mold.

2. The hot pressing forming process of the angle profile according to claim 1, characterized in that: In step 2, the angle profile is made of ABS material. After the temperature inside the heating device is heated to 180° C., the angle profile is placed in the heating device and heated for two minutes to complete softening.

3. The hot pressing forming process of the angle profile according to claim 1, characterized in that: In step 2, the angle profile is made of PVC material. After the temperature inside the heating device is heated to 200° C., the angle profile is placed in the heating device and heated for two and a half minutes to complete softening.

4. The hot pressing forming process of the angle profile according to claim 1, characterized in that: The mold device (6) comprises an upper mold (61) and a lower mold (62); the end surfaces of the upper mold (61) and the lower mold (62) respectively connected are provided with an upper molding groove (611) and a lower molding groove (621); the mold cavity formed by the combination of the upper molding groove (611) and the lower molding groove (621) has the appearance of a corner connection structure.

5. The hot pressing forming process of the angle profile according to claim 4, characterized in that: The cross section of the angle profile is an arc-shaped arch, comprising an arc-shaped surface (1) extending along the length direction of the angle profile, wherein the arc-shaped surface (1) is concave inward along the top to form a lamp groove (4); the upper molding groove (611) has an arc-shaped concave surface (612) corresponding to the arc-shaped surface (1), and the arc-shaped concave surface (612) is provided with a convex strip (613) extending toward the lamp groove (4).

6. The hot pressing forming process of the angle profile according to claim 4, characterized in that: The angle profile also includes a mounting surface (2) butted against two edges of the arc-shaped surface (1), and the mounting surface (2) and the snap-fit ​​groove (5) are accommodated in the lower molding groove (621).

7. The hot pressing forming process of the angle profile according to claim 4, characterized in that: A guide structure is provided between the upper die (61) and the lower die (62), and the guide structure has a guiding and positioning function during the movement of the upper die (61) relative to the lower die (62).

8. The hot pressing forming process of the angle profile according to claim 4, characterized in that: A cylinder (8) is fixedly arranged above the upper die (61), and the upper die (61) moves relative to the lower die (62) under the drive of the cylinder (8).

Images