Multi-layer co-extrusion one-step forming device for composite BOPET (biaxially oriented polyethylene terephthalate) insulating film

Abstract

The utility model belongs to the technical field of forming devices, and discloses a composite BOPET insulating film multi-layer co-extrusion one-time forming device which comprises a first extrusion box, a second extrusion box connected with the first extrusion box and a driving mechanism installed on the first extrusion box. A sliding groove is formed in the upper surface of the feeding hopper, an extending plate is arranged in the sliding groove in a sliding mode, and a limiting assembly used for limiting the extending plate is arranged on the feeding hopper. The raw material adding device has the effect of improving the raw material adding difficulty of workers.

Description

Technical Field

[0001] The utility model relates to the technical field of forming devices, in particular to a composite BOPET insulation film multi-layer co-extrusion one-time forming device. Background Art

[0002] BOPET film is a biaxially oriented polyester film. It features high strength, excellent rigidity, transparency, and high gloss. It is odorless, tasteless, colorless, non-toxic, and possesses outstanding toughness. Its tensile strength is three times that of PC and nylon films, and its impact strength is three to five times that of BOPP film. It also offers excellent resistance to abrasion, folding, pinholes, and tears. Extrusion molding, also known as extrusion molding in plastics processing, is also known as extrusion molding in non-rubber extruders. The extrusion process utilizes hydraulic pressure applied to the die itself, also known as extrusion. This process involves the material passing through the extruder barrel and screw, where it is heated and plasticized while being pushed forward by the screw, continuously passing through the die to form finished or semi-finished products of various cross-sections. Extrusion molding is an efficient, continuous, low-cost, and adaptable molding method for a wide range of applications, and is one of the earliest technologies in polymer material processing.

[0003] A Chinese utility model patent with publication number CN219883271U discloses an OPET biaxially oriented film extrusion device, belonging to the technical field of extrusion molding equipment. The OPET biaxially oriented film extrusion device includes a first extrusion mechanism, a second extrusion mechanism, and a driving mechanism. The first extrusion mechanism and the second extrusion mechanism respectively include a first extrusion box and a second extrusion box. The first extrusion box has a first extrusion screw and a second extrusion screw mounted therein via bearings, and the first extrusion screw and the second extrusion screw can be mutually extruded. The second extrusion box has a third extrusion screw and a fourth extrusion screw mounted therein via bearings, and the third extrusion screw and the fourth extrusion screw can be mutually extruded. By using the first extrusion box, the second extrusion box, the first extrusion screw, the second extrusion screw, the third extrusion screw, and the fourth extrusion screw, the raw material can be extruded twice, thereby more fully mixing the raw materials to meet subsequent use requirements.

[0004] Regarding the above-mentioned related technologies, the inventors believe that the following defects exist: the above-mentioned device allows raw materials to enter the first extrusion box by adding raw materials into the feed hopper arranged on the upper surface of the first extrusion box. Since the size of the feed hopper is fixed, when adding raw materials with good bouncing performance such as plastic, some raw materials are easy to hit the inner wall of the feed hopper and bounce out of the feed hopper, resulting in poor user experience. Utility Model Content

[0005] In order to solve the above problems, the utility model provides a composite BOPET insulation film multi-layer co-extrusion one-time molding device.

[0006] The above technical purpose of the present utility model is achieved through the following technical solutions: a composite BOPET insulation film multi-layer co-extrusion one-time molding device, including a first extrusion box, a second extrusion box interconnected with the first extrusion box, and a driving mechanism installed on the first extrusion box, the upper surface of the first extrusion box is provided with a feed hopper, the upper surface of the feed hopper is provided with a chute, an extension plate is slidably arranged in the chute, and the feed hopper is provided with a limiting component for limiting the extension plate.

[0007] By adopting the above technical solution, when the staff needs to produce a film, the staff needs to add raw materials to the feed hopper. At this time, the staff pulls the extension plate upward to move the extension plate upward as a whole. When the extension plate moves to the highest point, the extension plate automatically remains stable under the action of the limit assembly. At the same time, the four fixed plates automatically disperse under the action of gravity, thereby increasing the probability of contact between the raw materials and the fixed plates when the staff pours the raw materials, thereby increasing the probability of the raw materials entering the first extrusion box. Furthermore, the staff needs to start the drive structure to extrude and transport the raw materials. Subsequently, the extruded raw materials will enter the second extrusion box through the bellows, and then the second extrusion box will extrude the raw materials for the second time, and finally the raw materials will be transported to the outside of the second extrusion box through the through hole.

[0008] Furthermore, the extension plate includes an annular plate slidably set in the sliding groove, and the upper ends of the four side walls of the annular plate are each provided with a rotation groove. The extension plate also includes four rotating plates respectively rotatably set in the four rotating grooves and four fixed plates fixed to the four rotating plates in turn.

[0009] Furthermore, an elastic band is connected between two adjacent fixing plates.

[0010] With this technical solution, when adding raw materials, the operator simply pulls up the fixed plate, causing the fixed plate, annular plate, and rotating plate to move upward synchronously. Subsequently, when the retaining grooves align with the retaining holes, the annular plate remains stable thanks to the retaining assembly. At this point, the operator simply releases the fixed plate, causing the four fixed plates to automatically rotate outward under the influence of gravity, thereby widening the opening of the extension plate and increasing the probability of raw materials entering the first extrusion box.

[0011] Furthermore, an elastic membrane is commonly installed on the fixed plate, the rotating plate and the annular plate.

[0012] By adopting the above technical solution, the elastic membrane reduces the probability of gaps between the fixed plate, the rotating plate and the inner wall of the annular plate, thereby further increasing the probability of raw materials entering the feed hopper.

[0013] Furthermore, a limiting groove is provided on one of the inner walls of the slide groove, and the limiting assembly includes a limiting block slidably arranged in the limiting groove and a limiting spring with one end fixed on the side wall of the limiting block. A limiting hole that matches the limiting block is provided on the side wall of the annular plate close to the limiting groove, and the other end of the limiting spring is fixed on the inner wall of the limiting groove.

[0014] By adopting the above technical solution, when the staff slides the annular plate upward, the limiting hole gradually moves toward the limiting groove and finally faces it. At this time, the limiting block is connected to the limiting hole under the action of the limiting spring, thereby keeping the annular plate stable under the action of the limiting block.

[0015] Furthermore, a return spring is fixed to the bottom surface of the annular plate, and the other end of the return spring is fixed to the inner bottom wall of the sliding groove.

[0016] Furthermore, an elastic rope is fixed on the side wall of the limit block close to the limit spring, the other end of the elastic rope extends to the outside of the feed hopper and is slidably connected, and a stop block is fixed to the end of the limit block.

[0017] By adopting the above technical solution, when the raw materials are added, the staff needs to reset the annular plate. At this time, the staff only needs to pull the block to make the elastic rope move with the block, and then the limit block is separated from the limit hole under the action of the elastic rope, so that the annular plate is reset under the action of the reset spring, and the rotating plate is moved back into the slide groove.

[0018] Furthermore, counterweight blocks are embedded on the side walls of the four fixing plates.

[0019] By adopting the above technical solution, the counterweight block increases the probability that the fixed plate automatically rotates outward when the fixed plate moves to the highest point, thereby improving the user experience of the staff.

[0020] In summary, the present invention has the following beneficial effects:

[0021] 1. In this application, when the staff needs to produce a film, the staff needs to add raw materials into the feed hopper. At this time, the staff pulls the extension plate upward to move the extension plate upward as a whole. When the extension plate moves to the highest point, the extension plate automatically remains stable under the action of the limit assembly. At the same time, the four fixed plates automatically spread out under the action of gravity, thereby increasing the probability of the raw materials and the fixed plates contacting each other when the staff pours the raw materials, thereby increasing the probability of the raw materials entering the first extrusion box. Furthermore, the staff needs to start the drive structure to extrude and transport the raw materials. Subsequently, the extruded raw materials will enter the second extrusion box through the bellows, and the second extrusion box will extrude the raw materials for the second time, and finally the raw materials will be transported to the outside of the second extrusion box through the through hole;

[0022] 2. In this application, when the staff needs to add raw materials, they need to pull the fixed plate upwards, which will cause the fixed plate, annular plate, and rotating plate to move upwards synchronously. Subsequently, when the limit slots and limit holes are aligned, the annular plate remains stable under the action of the limit assembly. At this time, the staff only needs to loosen the fixed plate, and the four fixed plates will automatically rotate outwards under the action of gravity, thereby widening the opening of the extension plate, thereby increasing the probability of raw materials entering the first extrusion box;

[0023] 3. In this application, when the staff slides the annular plate upward, the limit hole gradually moves toward the limit groove and finally faces it. At this time, the limit block is connected to the limit hole under the action of the limit spring, thereby keeping the annular plate stable under the action of the limit block. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the utility model;

[0025] Figure 2 This is a schematic diagram of a stopper and its connection structure according to an embodiment of the present utility model;

[0026] Figure 3 This is a schematic diagram of the limiting hole and its connection structure in an embodiment of the utility model;

[0027] Figure 4 This is a schematic diagram of the extension plate and its connection structure according to an embodiment of the utility model;

[0028] Figure 5 This is a schematic diagram of the limit assembly and its connection structure in an embodiment of the utility model;

[0029] Figure 6 This is a schematic diagram of a return spring and its connection structure according to an embodiment of the present invention.

[0030] In the figure: 1. first extrusion box; 11. second extrusion box; 2. driving mechanism; 21. feed hopper; 3. chute; 4. extension plate; 41. annular plate; 411. rotating groove; 42. rotating plate; 43. fixed plate; 44. limit groove; 5. limit assembly; 51. limit block; 52. limit spring; 53. limit hole; 6. elastic belt; 61. elastic membrane; 7. return spring; 71. elastic rope; 8. block; 9. counterweight. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application; it is obvious that the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0032] like Figure 1-6 As shown, the embodiment of the present application discloses a composite BOPET insulation film multi-layer co-extrusion one-step molding device, comprising a first extrusion box 1, a second extrusion box 11, a drive mechanism 2, a feed hopper 21, an extension plate 4, a limit assembly 5, an elastic band 6, an elastic film 61, a return spring 7, an elastic cord 71, a stopper 8, and a counterweight 9. The second extrusion box 11 is interconnected with the first extrusion box 1, the drive mechanism 2 is mounted on the first extrusion box 1, and the feed hopper 21 is provided on the upper surface of the first extrusion box 1.

[0033] The upper surface of the feed hopper 21 is provided with a chute 3, and an extension plate 4 is slidably set in the chute 3. The extension plate 4 includes an annular plate 41, a rotating plate 42, and a fixed plate 43. The annular plate 41 is a plate-shaped structure with a square ring cross section, and the annular plate 41 is slidably set in the chute 3. The upper ends of the four side walls of the annular plate 41 are provided with a rotating groove 411. The rotating plate 42 is a plate-shaped structure. There are four rotating plates 42 and they are respectively rotatably set in the four rotating grooves 411. The fixed plate 43 is a rectangular plate-shaped structure. There are four fixed plates 43 and they are fixed to the four rotating plates 42 in sequence. The elastic band 6 is a band-shaped structure. There are four elastic bands 6, and the two ends of the elastic band 6 are respectively fixed to the two adjacent fixed plates 43.

[0034] When adding raw materials, the operator simply pulls up the fixed plate 43, causing the fixed plate 43, the annular plate 41, and the rotating plate 42 to move upward synchronously. Subsequently, when the stop slot 44 aligns with the stop hole 53, the annular plate 41 remains stable due to the action of the stop assembly 5. At this point, the operator simply releases the fixed plate 43, causing the four fixed plates 43 to automatically rotate outward under the action of gravity, thereby widening the opening of the extension plate 4 and increasing the probability of raw materials entering the first extrusion box 1.

[0035] To increase the probability of raw materials entering the feed hopper 21, an elastic membrane 61 is installed on the fixed plate 43, the rotating plate 42, and the annular plate 41. The elastic membrane 61 reduces the probability of gaps between the inner walls of the fixed plate 43, the rotating plate 42, and the annular plate 41, thereby further increasing the probability of raw materials entering the feed hopper 21.

[0036] A limit slot 44 is defined on one of the inner walls of the chute 3. A limit assembly 5 is mounted on the feed hopper 21 to limit the extension plate 4. The limit assembly 5 comprises a limit block 51 and a limit spring 52. The limit block 51 is a block-shaped structure that slides within the limit slot 44. A limit hole 53 is defined on the side wall of the annular plate 41 adjacent to the limit slot 44, which mates with the limit block 51. One end of the limit spring 52 is secured to the side wall of the limit block 51, while the other end is secured to the inner wall of the limit slot 44.

[0037] When the staff slides the annular plate 41 upward, the limiting hole 53 gradually moves toward the limiting groove 44 and finally faces it. At this time, the limiting block 51 is connected to the limiting hole 53 under the action of the limiting spring 52, thereby keeping the annular plate 41 stable under the action of the limiting block 51.

[0038] One end of the return spring 7 is fixed to the bottom surface of the annular plate 41, while the other end is fixed to the inner bottom wall of the chute 3. One end of the elastic cord 71 is fixed to the side wall of the limit block 51 near the limit spring 52, while the other end of the elastic cord 71 extends to the outside of the feed hopper 21 and is slidably connected thereto. The block 8 is a block-shaped structure and is fixed to the end of the limit block 51.

[0039] When the raw materials are added, the staff needs to reset the annular plate 41. At this time, the staff only needs to pull the stop block 8 to make the elastic rope 71 move along with the stop block 8, and then the limit block 51 is separated from the limit hole 53 under the action of the elastic rope 71, so that the annular plate 41 is reset under the action of the reset spring 7, and then the rotating plate 42 is moved back into the slide groove 3.

[0040] The counterweight 9 is a block structure, and four counterweights 9 are provided and sequentially embedded in the side walls of the four fixed plates 43. The counterweight 9 increases the probability that the fixed plate 43 automatically rotates outward when the fixed plate 43 moves to the highest point, thereby improving the user experience of the staff.

[0041] The operating principle of a composite BOPET insulation film multi-layer co-extrusion one-time molding device in this embodiment is as follows: when the staff needs to produce the film, the staff needs to add raw materials into the feed hopper 21. At this time, the staff pulls the extension plate 4 upward to move the extension plate 4 upward as a whole. When the extension plate 4 moves to the highest point, the extension plate 4 automatically remains stable under the action of the limit assembly 5. At the same time, the four fixed plates 43 automatically spread out under the action of gravity, thereby increasing the probability of the raw materials and the fixed plates 43 contacting each other when the staff pours the raw materials, thereby increasing the probability of the raw materials entering the first extrusion box 1. Furthermore, the staff needs to start the drive structure to extrude and transport the raw materials. Subsequently, the extruded raw materials will enter the second extrusion box 11 through the bellows, and then the second extrusion box 11 will extrude the raw materials for the second time, and finally the raw materials will be transported to the outside of the second extrusion box 11 through the through hole.

[0042] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, certain improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A composite BOPET insulation film multi-layer co-extrusion one-step molding device, comprising a first extrusion box (1), a second extrusion box (11) interconnected with the first extrusion box (1), and a drive mechanism (2) mounted on the first extrusion box (1), wherein: A feed hopper (21) is provided on the upper surface of the first extrusion box (1), a chute (3) is provided on the upper surface of the feed hopper (21), an extension plate (4) is slidably provided in the chute (3), and a limiting component (5) for limiting the extension plate (4) is provided on the feed hopper (21).

2. The composite BOPET insulation film multi-layer co-extrusion one-step molding device according to claim 1, characterized in that: The extension plate (4) includes an annular plate (41) slidably arranged in the slide groove (3), and the upper ends of the four side walls of the annular plate (41) are each provided with a rotation groove (411). The extension plate (4) also includes four rotation plates (42) rotatably arranged in the four rotation grooves (411) and four fixed plates (43) fixed to the four rotation plates (42) in sequence.

3. The composite BOPET insulation film multi-layer co-extrusion one-step molding device according to claim 2, characterized in that: An elastic band (6) is connected between two adjacent fixing plates (43).

4. The composite BOPET insulation film multi-layer co-extrusion one-step molding device according to claim 3, characterized in that: An elastic membrane (61) is commonly installed on the fixed plate (43), the rotating plate (42) and the annular plate (41).

5. The composite BOPET insulation film multi-layer co-extrusion one-step molding device according to claim 4, characterized in that: A limiting groove (44) is provided on one of the inner walls of the slide groove (3); the limiting assembly (5) comprises a limiting block (51) slidably arranged in the limiting groove (44) and a limiting spring (52) with one end fixed on the side wall of the limiting block (51); a limiting hole (53) matching the limiting block (51) is provided on the side wall of the annular plate (41) close to the limiting groove (44); and the other end of the limiting spring (52) is fixed on the inner wall of the limiting groove (44).

6. The composite BOPET insulation film multi-layer co-extrusion one-step molding device according to claim 5, characterized in that: A return spring (7) is fixed to the bottom surface of the annular plate (41), and the other end of the return spring (7) is fixed to the inner bottom wall of the sliding groove (3).

7. The composite BOPET insulation film multi-layer co-extrusion one-step molding device according to claim 6, characterized in that: An elastic rope (71) is fixed on the side wall of the limit block (51) close to the limit spring (52), and the other end of the elastic rope (71) extends to the outside of the feed hopper (21) and is slidably connected. A stopper (8) is fixed at the end of the limit block (51).

8. The composite BOPET insulation film multi-layer co-extrusion one-step molding device according to claim 7, characterized in that: Counterweight blocks (9) are embedded on the side walls of the four fixing plates (43).

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