Bonding forming device of PET foam composite structure

Abstract

The utility model relates to the technical field of bonding forming of foam structures, in particular to a bonding forming device of a PET (polyethylene terephthalate) foam composite structure, which comprises a bedplate and a hot melting component, draw bars are rotatably arranged at symmetrical positions at two ends of the hot melting component, and the other ends of the draw bars are rotatably connected with a mounting frame. A squeezing roller is rotationally installed between every two installation frames on the same side and on the different sides, guide grooves are formed in the positions, matched with the traction rods, of the platen, sliding plates are installed at the bottom ends of the installation frames, and springs are installed on the sides, close to the ends of the guide grooves, of the sliding plates. On the premise of ensuring that the structure of the whole device is simpler, air between the CFRT foam layer and the PET foam layer is effectively discharged in the downward moving process, a certain amount of air which is not discharged is prevented from existing between the bonded and formed composite structures, a certain air gap is further prevented from existing in the composite structures, and the service life of the composite structures is prolonged. And the composite strength of the composite structure is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of foam structure bonding and molding, in particular to a bonding and molding device for a PET foam composite structure. Background Art

[0002] CFRT sheet, short for continuous fiber reinforced thermoplastic, is a sheet made by evenly dispersing continuous fibers arranged side by side in the same direction and impregnated and bonded with thermoplastic. It is a lightweight, high-strength material often used to reinforce the structure of other materials. PET plastic has a highly symmetrical molecular structure and a certain degree of crystal orientation, which gives it high film-forming properties and excellent optical properties. PET plastic has excellent optical properties and weather resistance, and amorphous PET plastic has good optical transparency. In addition, PET plastic has excellent wear and friction resistance, dimensional stability, and electrical insulation. In the manufactured foam material, in order to improve the overall foam performance, it is usually necessary to compound the CFRT foam layer with the PET foam layer. Hot melt molding is generally used to press the CFRT foam layer and the PET foam layer together to form a composite structure. A more advanced composite form is a CFRT+PET foam+CFRT sandwich composite structure. Hot melt molding is also used between the layers. Hot melt molding can be used in a single hot melt molding or a double hot melt molding process with repeated steps.

[0003] In the process of composite hot melt molding of CFRT foam layer and PET foam layer, it is usually necessary to stack the CFRT foam layer and the PET foam layer, and then complete the hot melt bonding molding through the hot melt structure. In the existing bonding molding device, the hot melt component is often directly contacted with the foam layer to complete the hot melt molding. However, such molding method is often a flat integral molding, which makes it difficult to expel the air between the CFRT foam layer and the PET foam layer, resulting in a certain amount of unexpelled air between the bonded composite structure, that is, there is a certain air gap in the composite structure, which reduces the composite strength of the composite structure.

[0004] Therefore, it is necessary to invent a bonding molding device for PET foam composite structure to solve the above problems. Utility Model Content

[0005] In order to address the deficiencies of the prior art, the purpose of the present invention is to provide a bonding molding device for a PET foam composite structure, which solves the problem in the prior art that it is difficult to expel the air between the CFRT foam layer and the PET foam layer during plane integral molding, resulting in a certain amount of unexpelled air between the bonded and molded composite structure, that is, there is a certain air gap in the composite structure, which reduces the composite strength of the composite structure.

[0006] In order to achieve the above objectives, the present invention adopts the following technical solutions:

[0007] A bonding and molding device for a PET foam composite structure, comprising a table on which two layers of foam structures to be bonded can be stacked and placed at the center of a top surface, and a hot melt assembly longitudinally slidably arranged above the top surface of the table and used for hot melt molding, wherein traction rods are rotatably arranged at symmetrical positions at both ends of the hot melt assembly, and the other ends of the traction rods are rotatably connected to mounting brackets, and an extrusion roller that can squeeze out air from the two layers of foam structures is rotatably installed between two mounting brackets on different sides but on the same side, wherein guide grooves are formed at positions where the table adapts to the traction rods, and a slide that can slide along the guide grooves is installed at the bottom end of the mounting bracket, and a spring is installed on the side of the slide close to the end of the guide groove;

[0008] When the two squeezing rollers are in contact in the middle of the two-layer foam structure, the two traction rods on the same side but different edges are in an outwardly inclined state.

[0009] As a preferred solution of the present invention, a folding frame is extended from the end of each mounting frame, and a mounting seat is detachably installed between two folding frames on the same side but different edges, and the squeezing roller is rotatably installed in the mounting seat.

[0010] As a preferred solution of the present invention, longitudinally retractable lifting components are installed at the four corners of the top surface of the table, and a top frame is installed between the top ends of the lifting components. The hot melt component includes a connecting piece that is detachably installed at the center of the bottom end of the top frame and a hot melt pressure plate installed at the bottom end of the connecting piece.

[0011] As a preferred solution of the present invention, clamping columns are installed at symmetrical positions on both ends of the connecting piece, one end of the traction rod is installed with a first swivel that can be rotatably mounted on the clamping column, and the other end of the traction rod is installed with a second swivel that can be rotatably embedded in the mounting frame.

[0012] As a preferred solution of the present invention, a guide post is embedded in the guide groove, the slide plate is slidably sleeved on the guide post, and the spring is sleeved on the guide post.

[0013] As a preferred solution of the present invention, a placement frame is installed at the center of the top surface of the table, and the two foam structures can be stacked and placed in the placement frame.

[0014] As a preferred solution of the present invention, a plurality of ventilation holes are provided on both symmetrical side walls of the placement frame.

[0015] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0016] In the present invention, the two squeezing rollers are in the middle contact position in the initial state. When the hot melt component moves down to contact the foam layer and performs hot melt molding, the inclination angle between the two traction rods on the same side continues to expand, that is, the two slides are forced to slide gradually away from each other along the guide groove, that is, the two squeezing rollers are driven to slide gradually from the middle contact position to the side direction, thereby squeezing and discharging the air between the CFRT foam layer and the PET foam layer from the middle to both sides, so that when the hot melt component contacts the foam layer, the squeezing roller moves laterally to separate from the foam layer and completely expel the air therein to the side. In this process, the movement drive of the traction rod and the squeezing roller can be achieved by the downward movement of the hot melt component, avoiding an additional driving structure. On the premise of ensuring that the structure of the entire device is simpler, the air between the CFRT foam layer and the PET foam layer is effectively discharged during the downward movement, thereby avoiding a certain amount of unexcluded air between the composite structure after bonding and molding, thereby avoiding a certain air gap in the composite structure, and improving the composite strength of the composite structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the front plan view structure of the utility model;

[0019] Figure 3 It is a schematic diagram of the planar top view structure of the present utility model.

[0020] Description of reference numerals:

[0021] 1. Table; 2. Placement frame; 3. Ventilation hole; 4. Lifting assembly; 5. Top frame; 6. Connector; 7. Hot melt pressure plate; 8. Guide groove; 9. Guide column; 10. Clamping column; 11. First swivel; 12. Pull rod; 13. Second swivel; 14. Mounting frame; 15. Folding frame; 16. Mounting seat; 17. Squeeze roller; 18. Slide plate; 19. Spring. DETAILED DESCRIPTION

[0022] The present invention will be further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention and are not intended to limit the scope of protection of the present invention.

[0023] The utility model provides Figure 1-3The device for bonding and forming a PET foam composite structure shown in the figure comprises a table 1 on which two layers of foam structures to be bonded can be stacked and placed at the center of the top surface, and a hot melt assembly longitudinally slidably arranged above the top surface of the table 1 and used for hot melt forming. A traction rod 12 is rotatably arranged at both ends of the hot melt assembly at symmetrical positions, and a mounting bracket 14 is rotatably connected to the other end of the traction rod 12. An extrusion roller 17 for squeezing out air from the two layers of foam structures is rotatably mounted between the two mounting brackets 14 on different sides but on the same side. Guide grooves 8 are formed at the positions of the table 1 where the traction rods 12 are adapted. A slide 18 that can slide along the guide groove 8 is mounted at the bottom end of the mounting bracket 14, and a spring 19 is mounted on the side of the slide 18 near the end of the guide groove 8.

[0024] When the two squeezing rollers 17 are in contact in the middle of the two-layer foam structure, the two traction rods 12 on the same side but different edges are in an outwardly inclined state.

[0025] A folding frame 15 is formed by extending from the end of each mounting frame 14, and a mounting seat 16 is detachably installed between the two folding frames 15 on the same side but different sides. The squeezing roller 17 is rotatably installed in the mounting seat 16. The existence of the folding frame 15 can make the mounting frame 14 offset outward, so that the traction rod 12 in the initial state is in an outward tilted state, which facilitates the traction rod 12 to further rotate outward in the subsequent process.

[0026] A longitudinally retractable lifting assembly 4 is installed at the four corners of the top surface of the table 1, and a top frame 5 is installed between the top ends of the lifting assembly 4. The hot melt assembly includes a connector 6 detachably installed at the center of the bottom end of the top frame 5 and a hot melt pressing plate 7 installed at the bottom end of the connector 6. The hot melt pressing plate 7 can be heated by a heater, and then when it contacts the foam layer, the CFRT foam layer and the PET foam layer are bonded and composited by hot melting.

[0027] A clamping column 10 is installed at symmetrical positions on both ends of the connecting member 6, a first swivel 11 that can be rotatably mounted on the clamping column 10 is installed at one end of the traction rod 12, and a second swivel 13 that can be rotatably embedded in the mounting frame 14 is installed at the other end of the traction rod 12. The first swivel 11 and the second swivel 13 can improve the smoothness of the rotation of the traction rod 12.

[0028] A guide column 9 is embedded in the guide groove 8, the slide plate 18 is slidably mounted on the guide column 9, and the spring 19 is mounted on the guide column 9. The existence of the guide column 8 and the guide groove 9 can limit the sliding direction of the slide plate 18, and the existence of the spring 19 can enable the extrusion roller 17 to return to its position quickly after the hot melt forming is completed.

[0029] A placement frame 2 is installed in the center of the top surface of the table top 1. Both foam structures can be stacked and placed in the placement frame 2. Multiple air holes 3 are opened on the symmetrical side walls of the placement frame 2. The placement frame 2 can limit the position of the CFRT foam layer and the PET foam layer. The air holes 3 can discharge the exhausted air to the outside.

[0030] In the present invention, the two squeezing rollers 17 are in the middle contact position in the initial state. When the hot melt component moves down to contact the foam layer and performs hot melt molding, the inclination angle between the two traction rods 12 on the same side continues to expand, that is, forcing the two slides 18 to gradually slide away along the guide groove 8, that is, driving the two squeezing rollers 17 to gradually slide from the middle contact position to the side direction, thereby squeezing and discharging the air between the CFRT foam layer and the PET foam layer from the middle to both sides, so that when the hot melt component contacts the foam layer, the squeezing roller 17 moves laterally to separate from the foam layer and completely expel the air therein to the side. In this process, the movement drive of the traction rod 12 and the squeezing roller 17 can be achieved by the downward movement of the hot melt component, avoiding an additional driving structure. On the premise of ensuring that the structure of the entire device is simpler, the air between the CFRT foam layer and the PET foam layer is effectively discharged during the downward movement, thereby avoiding a certain amount of unexcluded air between the composite structure after bonding and molding, thereby avoiding a certain air gap in the composite structure, and improving the composite strength of the composite structure.

[0031] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A bonding and molding device for a PET foam composite structure, characterized in that: It comprises a table (1) on which two layers of foam structures to be bonded can be stacked and placed at the center of the top surface, and a hot melt component longitudinally slidably arranged above the top surface of the table (1) and used for hot melt molding, wherein traction rods (12) are rotatably arranged at symmetrical positions at both ends of the hot melt component, the other end of the traction rod (12) is rotatably connected to a mounting frame (14), and an extrusion roller (17) that can squeeze out the air in the two layers of foam structures is rotatably installed between two mounting frames (14) on different sides but on the same side, and a guide groove (8) is provided at the position where the table (1) is adapted to the traction rod (12), and a slide plate (18) that can slide along the guide groove (8) is installed at the bottom end of the mounting frame (14), and a spring (19) is installed on one side of the slide plate (18) close to the end of the guide groove (8); When the two squeezing rollers (17) are in contact in the middle of the two-layer foam structure, the two traction rods (12) on the same side but different edges are in an outwardly inclined state.

2. The bonding and molding device for a PET foam composite structure according to claim 1, characterized in that: A folding frame (15) is extended from the end of each mounting frame (14), and a mounting seat (16) is detachably mounted between two folding frames (15) on the same side but different edges, and the squeezing roller (17) is rotatably mounted in the mounting seat (16).

3. The bonding and molding device for a PET foam composite structure according to claim 1, characterized in that: The four corners of the top surface of the table (1) are each provided with a longitudinally retractable lifting assembly (4), a top frame (5) is commonly provided between the top ends of the lifting assembly (4), and the hot melt assembly comprises a connecting piece (6) detachably installed at the center of the bottom end of the top frame (5) and a hot melt pressing plate (7) installed at the bottom end of the connecting piece (6).

4. The bonding and molding device for a PET foam composite structure according to claim 3, characterized in that: Clamping posts (10) are installed at symmetrical positions at both ends of the connecting member (6); a first rotating ring (11) rotatably sleeved on the clamping post (10) is installed at one end of the traction rod (12); and a second rotating ring (13) rotatably embedded in a mounting frame (14) is installed at the other end of the traction rod (12).

5. The bonding and molding device for a PET foam composite structure according to claim 1, characterized in that: A guide column (9) is embedded in the guide groove (8), the slide plate (18) is slidably sleeved on the guide column (9), and the spring (19) is sleeved on the guide column (9).

6. The bonding and molding device for a PET foam composite structure according to claim 1, characterized in that: A placement frame (2) is installed at the center of the top surface of the tabletop (1), and the two foam structures can be stacked and placed in the placement frame (2).

7. The bonding and molding device for a PET foam composite structure according to claim 6, characterized in that: The symmetrical two side walls of the placement frame (2) are both provided with a plurality of air holes (3).

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