A roof made of automobile EPP material and its forming equipment and forming process

Abstract

The present invention relates to a ceiling made of EPP material for automobiles and its forming equipment and forming process, wherein the ceiling comprises a ceiling substrate, a skylight opening is provided on the ceiling substrate, a flange is provided on the skylight opening, a tarpaulin is provided on the ceiling substrate, a cloth with a cross-section in the shape of a "J" is provided on the tarpaulin to provide guidance when the tarpaulin wraps the flange, and the ceiling substrate is made of EPP material. The present invention guides the tarpaulin by cooperating with a guide column and the cloth to make the tarpaulin flip over, and then the tarpaulin is closely attached to the flange of the skylight opening by cooperating with a No. 2 pressing block and a No. 3 pressing block to complete the hemming work, thereby preventing the unevenness and uneven height of the tarpaulin caused by inaccurate position of manual hemming.

Description

Technical Field

[0001] The invention relates to the field of manufacturing of automobile roofs, in particular to a roof made of automobile EPP material and a molding device and molding process thereof. Background Art

[0002] The car roof is mainly composed of base material and fabric. The traditional base material is mainly made of materials such as fiberglass board or hemp fiberboard. Due to its heavy weight and poor sound insulation effect, and the fact that a large amount of glue is used in the processing of fiberglass board materials, which produces irritating odor and endangers human health, it is less and less used in car roof design. EPP material has good elasticity, is shock-resistant and compression-resistant, is non-toxic and odorless, and has a small weight. Applying EPP material to the car roof can reduce the weight of the roof while increasing the safety factor.

[0003] The existing car roofs need to be edged during the molding process. A large number of factories still use manual edge wrapping, which can easily lead to problems such as inaccurate edge positioning and debonding at the edge. At the same time, a large number of workers are required to assist and cooperate, which can easily lead to problems such as chaotic factory management. Summary of the invention

[0004] In order to solve the above technical problems, the present invention proposes a ceiling made of automotive EPP material and its forming equipment and forming process. The technical problem to be solved by the present invention is achieved by adopting the following technical solutions:

[0005] A ceiling made of EPP material for automobile comprises a ceiling substrate, a skylight opening is arranged on the ceiling substrate, a flange is arranged on the skylight opening, a tarpaulin is arranged on the ceiling substrate, a cloth with a cross-section in the shape of a "J" is arranged on the tarpaulin to provide guidance when the tarpaulin wraps the flange, and the ceiling substrate is made of EPP material.

[0006] A forming device for a roof made of an EPP material for an automobile comprises a base, on which a tarpaulin and a roof substrate are placed, and in which four movable plates distributed around the edge of a skylight opening are slidably installed. A first hemming device for hemming the tarpaulin at the corner of the skylight opening is provided on the base, and a second hemming device for hemming the edge of the skylight opening is also provided on the movable plate.

[0007] The No. 1 edging device includes a mounting plate fixed on a base, a rotating shaft is slidably mounted on the mounting plate, a No. 1 pressing block for pressing the tarpaulin is hingedly mounted on the rotating shaft, and the rotating shaft is connected to a cylinder mounted on a movable plate.

[0008] The second edging device includes a clamping mechanism that makes the tarpaulin close to the ceiling base plate, and the clamping mechanism is provided with a flipping mechanism that drives the tarpaulin to flip and provides guidance for the tarpaulin. The second edging device also includes a driving mechanism connected to the movable plate to drive the movable plate to move along the edge line of the skylight opening.

[0009] The clamping mechanism comprises a No. 2 clamping block hingedly mounted on the movable plate, a No. 3 clamping block hingedly connected to the No. 2 clamping block, and locking mechanisms are provided on both the No. 2 clamping block and the No. 3 clamping block.

[0010] The locking mechanism includes a hinged column connected to the second pressure block and the third pressure block, the hinged column is connected to a limit rod, the limit rod is abutted against a pair of blocks that limit the position of the limit rod, the second pressure block is provided with a sliding sleeve that cooperates with the block, and a spring is provided in the sliding sleeve.

[0011] The turning mechanism comprises a guide column which is mounted on the pressing mechanism and matched with the cloth. One end of the guide column away from the cloth is provided with a cutting blade which cuts the cloth to prevent interference when the tarpaulin is turned over.

[0012] The driving mechanism is connected to a lead screw of a corresponding moving plate, and the lead screw is connected to a motor.

[0013] A molding process for a ceiling made of an automotive EPP material, characterized in that it comprises the following steps:

[0014] Step 1: Pre-press the EPP raw material;

[0015] Step 2: Preheat the EPP raw material and inject it into the ceiling mold;

[0016] Step 3: The EPP raw material in the ceiling mold is heated and formed;

[0017] Step 4: Cooling the EPP material of the ceiling mold;

[0018] Step 5: demould the EPP material and bake it to form a ceiling substrate;

[0019] Step 6: Heat press the fabric onto the tarpaulin;

[0020] Step 7: Wrap the tarp over the ceiling substrate and hem the skylight opening.

[0021] In the seventh step, the tarpaulin at the corner of the skylight opening is hemmed by the No. 1 hemming device, and the tarpaulin at the edge of the skylight opening is hemmed by the No. 2 hemming device. While the No. 2 hemming device is hemming, the guide column cooperates with the cloth to drive the tarpaulin to flip over.

[0022] The beneficial effects of the present invention are as follows: the present invention guides the tarpaulin by cooperating with the guide column and the cloth to make the tarpaulin flip over, and then the No. 2 pressing block cooperates with the No. 3 pressing block to make the tarpaulin close to the flange of the skylight opening, thereby completing the hemming work and preventing the tarpaulin from being uneven and unequal in height due to inaccurate manual hemming position. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0024] Figure 1 is a schematic diagram of the three-dimensional structure of the ceiling substrate of the present invention;

[0025] Figure 2 It is a schematic diagram of the three-dimensional structure of the ceiling substrate and the tarpaulin of the present invention;

[0026] Figure 3 It is a schematic diagram of the three-dimensional structure of the molding device of the present invention;

[0027] Figure 4 It is a front view of the molding device of the present invention;

[0028] Figure 5 It is a schematic diagram of the three-dimensional structure of the first hemming device of the present invention;

[0029] Figure 6 The three-dimensional structure of the second hemming device of the present invention is shown in FIG. Figure 1 ;

[0030] Figure 7 The three-dimensional structure of the second hemming device of the present invention is shown in FIG. Figure 2 ;

[0031] Figure 8 It is a front view of the locking mechanism of the present invention;

[0032] Fig. 9 It is a front view of the turning mechanism of the present invention;

[0033] Fig.10 For the present invention Figure 2 Magnified view of center I.

[0034] As shown in the figure: 1. base; 2. ceiling substrate; 3. skylight opening; 4. moving plate; 5. tarpaulin; 6. No. 1 hemming device; 7. No. 2 hemming device; 61. mounting plate; 62. rotating shaft; 63. No. 1 pressure block; 64. cylinder; 71. clamping mechanism; 72. flipping mechanism; 73. driving mechanism; 711. No. 2 pressure block; 712. No. 3 pressure block; 713. locking mechanism; 714. hinged column; 715. limit rod; 716. block; 717. sliding sleeve; 718. spring; 721. cloth; 722. guide column; 723. cutting blade; 731. lead screw; 732. motor; 733. guide rod; 31. flanging. DETAILED DESCRIPTION

[0035] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be explained more clearly and completely below in conjunction with the drawings in the embodiments. Of course, the described embodiments are only a part of the present invention but not all of it. Based on this embodiment, other embodiments obtained by those skilled in the art without creative labor are all within the protection scope of the present invention.

[0036] like Figure 1 , Figure 2 and Fig.10 As shown, a ceiling made of EPP material for an automobile comprises a ceiling substrate 2, a skylight opening 3 is provided on the ceiling substrate 2, a flange 31 is provided on the skylight opening 3, a tarpaulin 5 is provided on the ceiling substrate 2, a cloth 721 having a cross-section in the shape of a "F" is provided on the tarpaulin 5 to provide guidance when the tarpaulin 5 wraps the flange 31, and the ceiling substrate 2 is made of EPP material; Figure 1 The remaining components on the ceiling substrate 2 shown are well-known technologies in the industry and will not be described again.

[0037] like Figures 3 to 9 As shown, a molding device for a ceiling made of an EPP material for an automobile comprises a base 1, on which the tarpaulin 5 and the ceiling substrate 2 are placed, and four movable plates 4 distributed around the edge of a skylight opening 3 are slidably installed in the base 1, and a first edge wrapping device 6 for wrapping the tarpaulin 5 at the corner of the skylight opening 3 is provided on the base 1, and a second edge wrapping device 7 for wrapping the edge of the skylight opening 3 is also provided on the movable plate 4; the tarpaulin 5 is adhered to the ceiling substrate 2 by applying glue around the skylight opening 3 by an industrial robot; Figure 2 The ceiling substrate 2 in the figure is a simple illustration.

[0038] The No. 1 edging device 6 includes a mounting plate 61 fixed on the base 1, and a rotating shaft 62 is slidably mounted on the mounting plate 61, and a No. 1 pressure block 63 for pressing the tarpaulin 5 is hingedly mounted on the rotating shaft 62, and the rotating shaft 62 is connected to a cylinder 64 mounted on the movable plate 4; the No. 1 pressure block 63 is manually rotated 90 degrees, and the tarpaulin 5 is wrapped around the flange 31 and the ceiling substrate 2 at the same time, and then the cylinder 64 pulls the rotating shaft 62 down, so that the No. 1 pressure block 63 drives the tarpaulin 5 to be tightly attached to the flange 31 and the ceiling substrate 2.

[0039] The second edging device 7 includes a clamping mechanism 71 that makes the tarpaulin 5 close to the ceiling substrate 2, and the clamping mechanism 71 is provided with a flipping mechanism 72 that drives the tarpaulin 5 to flip and provides guidance for the tarpaulin 5. The second edging device 7 also includes a driving mechanism 73 connected to the movable plate 4 to drive the movable plate 4 to move along the edge line of the skylight opening 3.

[0040] The clamping mechanism 71 comprises a second clamping block 711 hingedly mounted on the moving plate 4, a third clamping block 712 hingedly connected to the second clamping block 711, and a locking mechanism 713 is provided on both the second clamping block 711 and the third clamping block 712. In the initial state, the moving plate 4 is located at the midpoint of the edge line of the skylight opening 3.

[0041] The locking mechanism 713 includes a hinge column 714 connected to the No. 2 pressure block 711 and the No. 3 pressure block 712, the hinge column 714 is connected to the limit rod 715, the limit rod 715 is abutted with a pair of blocks 716 that limit the position of the limit rod 715, the No. 2 pressure block 711 is provided with a sliding sleeve 717 that cooperates with the block 716, and the sliding sleeve 717 is provided with a spring 718; the No. 2 pressure block 711 and the No. 3 pressure block 712 are manually rotated 90 degrees, and after the No. 3 pressure block 712 is rotated 90 degrees, the limit rod 715 is abutted with the block 716 to prevent the movable plate 4 from causing the No. 3 pressure block 712 to flip over during the movement, so that the tarpaulin is not completely compressed. When the hemming is completed, the No. 3 pressure block 712 is manually rotated to disengage the limit rod 715 from the block 716.

[0042] The flipping mechanism 72 includes a guide column 722 installed on the pressing mechanism 71 and cooperating with the cloth 721. The end of the guide column 722 away from the cloth 721 is provided with a cutting blade 723 for cutting the cloth 721 to prevent interference with the tarpaulin 5 when flipping. When the first pressing block 63 is edged, the driving mechanism 73 drives the moving plate 4 from the midpoint of the edge line of the skylight opening 3 to the edge line of the skylight opening 3, and the second pressing block 723 is manually pressed. 11 and the third pressing block 712 rotate 90 degrees, then turn over a corner of the tarpaulin 5, and at the same time, put the cloth 721 into the guide column 722; the movable plate 4 moves along the edge of the skylight opening 3, and the guide column 722 and the cloth 721 cooperate to turn over the tarpaulin 5, and at the same time, the cloth 721 is cut by the cutting blade 723 to prevent the cloth from piling up and interfering. After the tarpaulin 5 is turned over, the second pressing block 711 and the third pressing block 712 press the tarpaulin 5 tightly against the flange 31 and the ceiling base plate 2; Figure 2 The cloth 721 on the tarpaulin 5 is shown to be cut.

[0043] The driving mechanism 73 is connected to the corresponding movable plate 4 by a lead screw 731, and the lead screw 731 is connected to a motor 732. The movable plate 4 is also equipped with a guide rod 733 installed on the base 1; the motor 732 drives the lead screw 731 to rotate and cooperate with the movable plate 4, driving the movable plate 4 to move along the edge line of the skylight opening 3.

[0044] A molding process for a ceiling made of an automotive EPP material, characterized in that it comprises the following steps:

[0045] Step 1: Pre-press the EPP raw material;

[0046] Step 2: Preheat the EPP raw material and inject it into the ceiling mold;

[0047] Step 3: The EPP raw material in the ceiling mold is heated and formed;

[0048] Step 4: Cooling the EPP material of the ceiling mold;

[0049] Step 5: demoulding the EPP material and baking it to form a ceiling substrate 2;

[0050] Step 6: hot pressing the fabric 721 onto the tarpaulin 5;

[0051] Step 7: Wrap the tarpaulin 5 on the ceiling substrate 2 and wrap the skylight opening 3.

[0052] In the seventh step, the tarpaulin 5 at the corner of the skylight opening 3 is hemmed by the first hemming device 6, and the tarpaulin 5 at the edge of the skylight opening 3 is hemmed by the second hemming device 7. While the second hemming device 7 is hemming, the guide column 722 cooperates with the cloth 721 to drive the tarpaulin 5 to flip over.

[0053] In the present invention, when the tarpaulin needs to be hemmed, the tarpaulin 5 and the ceiling substrate 2 are placed on the base 1, and then the glue is applied around the skylight opening 3 by an industrial robot;

[0054] Step 2: Manually rotate the No. 1 pressing block 63 90 degrees, and at the same time cover the tarpaulin 5 on the flange 31 and the ceiling substrate 2, and then the cylinder 64 pulls the rotating shaft 62 down, so that the No. 1 pressing block 63 drives the tarpaulin 5 to be closely attached to the flange 31 and the ceiling substrate 2;

[0055] Step 3: After the No. 63 pressing block is hemmed, the driving mechanism 73 drives the movable plate 4 to move from the midpoint of the edge of the skylight opening 3 to the edge of the skylight opening 3, and the No. 2 pressing block 711 and the No. 3 pressing block 712 are manually rotated 90 degrees, and then one corner of the tarpaulin 5 is turned over, and the cloth 721 is inserted into the guide column 722 at the same time; the movable plate 4 moves along the edge of the skylight opening 3, and the guide column 722 cooperates with the cloth 721 to turn the tarpaulin 5 over, and the cutting blade 723 is used to cut the cloth 721 to prevent the cloth from piling up and interfering. After the tarpaulin 5 is turned over, the No. 2 pressing block 711 and the No. 3 pressing block 712 press the tarpaulin 5 tightly against the flange 31 and the ceiling substrate 2;

[0056] Step 4: After the hemming is completed, the car roof is manually removed and then loaded.

[0057] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A molding device for a ceiling made of an EPP material for an automobile, wherein the ceiling made of the EPP material for an automobile comprises a ceiling substrate (2), a skylight opening (3) is provided on the ceiling substrate (2), a flange (31) is provided on the skylight opening (3), a tarpaulin (5) is provided on the ceiling substrate (2), a cloth (721) having a cross-section in the shape of a "F" is provided on the tarpaulin (5) to provide guidance when the tarpaulin (5) wraps the flange (31), the ceiling substrate (2) is made of an EPP material, the molding device comprises a base (1), the tarpaulin (5) and the ceiling substrate (2) are placed on the base (1), and the characteristics are as follows: The base (1) is slidably mounted with four movable plates (4) distributed around the edge of the skylight opening (3); the base (1) is provided with a first edge wrapping device (6) for wrapping the tarpaulin (5) at the corner of the skylight opening (3); and the movable plates (4) are also provided with a second edge wrapping device (7) for wrapping the edge of the skylight opening (3); The second edge wrapping device (7) comprises a pressing mechanism (71) for making the tarpaulin (5) close to the ceiling base plate (2); the pressing mechanism (71) is provided with a turning mechanism (72) for driving the tarpaulin (5) to turn over and providing guidance for the tarpaulin (5); the second edge wrapping device (7) further comprises a driving mechanism (73) connected to the movable plate (4) to drive the movable plate (4) to move along the edge line of the skylight opening (3); The clamping mechanism (71) comprises a No. 2 clamping block (711) hingedly mounted on the movable plate (4), a No. 3 clamping block (712) being hingedly connected to the No. 2 clamping block (711), and a locking mechanism (713) being provided on both the No. 2 clamping block (711) and the No. 3 clamping block (712); The locking mechanism (713) comprises a hinged column (714) connected to the second pressure block (711) and the third pressure block (712); the hinged column (714) is connected to a limit rod (715); the limit rod (715) abuts against a pair of stoppers (716) for limiting the position of the limit rod (715); the second pressure block (711) is provided with a sliding sleeve (717) that cooperates with the stoppers (716); and a spring (718) is provided in the sliding sleeve (717); The flipping mechanism (72) comprises a guide column (722) mounted on the pressing mechanism (71) and cooperating with the cloth (721); an end of the guide column (722) away from the cloth (721) is provided with a cutting blade (723) for cutting the cloth (721) to prevent interference with the tarpaulin (5) when flipping; The driving mechanism (73) comprises a lead screw (731) connected to a corresponding moving plate (4), and the lead screw (731) is connected to a motor (732).

2. The molding equipment for the ceiling made of automobile EPP material according to claim 1 is characterized in that: The first edging device (6) comprises a mounting plate (61) fixed on the base (1), a rotating shaft (62) being slidably mounted on the mounting plate (61), a first pressing block (63) for pressing the tarpaulin (5) being hingedly mounted on the rotating shaft (62), and the rotating shaft (62) being connected to a cylinder (64) mounted on the movable plate (4).

3. A molding process for a ceiling made of an automotive EPP material, using a molding device for a ceiling made of an automotive EPP material as claimed in any one of claims 1 to 2, characterized in that: The following steps are involved: Step 1: Pre-press the EPP raw material; Step 2: Preheat the EPP raw material and inject it into the ceiling mold; Step 3: The EPP raw material in the ceiling mold is heated and formed; Step 4: Cooling the EPP material of the ceiling mold; Step 5: demoulding the EPP material and baking it to form a ceiling substrate (2); Step 6: hot pressing the fabric (721) onto the tarpaulin (5); Step 7: Wrap the tarpaulin (5) on the ceiling substrate (2) and wrap the edge of the skylight opening (3).

4. The molding process of a ceiling made of an automotive EPP material according to claim 3, characterized in that: In the seventh step, the tarpaulin (5) at the corner of the skylight opening (3) is hemmed by the first hemming device (6), and the tarpaulin (5) at the edge of the skylight opening (3) is hemmed by the second hemming device (7). While the second hemming device (7) is hemming, the guide column (722) cooperates with the cloth (721) to drive the tarpaulin (5) to flip.

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