Solar encapsulant film extrusion die with air cooling device

Abstract

This invention provides an extrusion die head for solar encapsulation films with an air-cooling device. It includes an upper die and a lower die connected to each other, with an extrusion channel between them. A fine-tuning seat is connected to the front side of the upper die, and an expansion rod is housed within the fine-tuning seat. A resistance heating coil is installed inside the expansion rod for heating. A push-pull rod is connected to the front end of the expansion rod, with its front end located at the die lip of the upper die. A heat-insulating air duct is laterally arranged on the outer side of the expansion rod near the push-pull rod, and a cooling air duct is laterally arranged on the outer side of the push-pull rod. A series of air outlets are spaced apart on the surfaces of both the heat-insulating and cooling air ducts. Each outer surface of the expansion rod and each outer surface of the push-pull rod has an independent air outlet. Air enters simultaneously from both ends of the heat-insulating and cooling air ducts, and the diameter of the air outlets gradually increases from the center outwards. The unique air-cooling and heat-insulating structures of this invention can meet the normal production requirements of solar encapsulation films.

Description

Technical Field

[0001] This invention relates to an extrusion die, and more particularly to an extrusion die for a solar encapsulation film with an air-cooling device. Background Technology

[0002] Currently, the die lip gap on the extrusion die head for solar encapsulation film is adjusted manually, or in some dies with automatic die lip gap adjustment, the heater on the expansion rod is too close to the die lip, causing heat to be transferred to the die lip through the expansion rod, which affects the normal production of the product. Summary of the Invention

[0003] To address the aforementioned problems, this invention aims to provide a solar encapsulation film extrusion die with an air-cooling device. Its special air-cooling structure can meet the normal production requirements of solar encapsulation films.

[0004] The technical solution of this invention is a solar encapsulation film extrusion die head with an air-cooling device, including an upper die and a lower die connected to each other. An extrusion channel is provided between the upper die and the lower die. A fine-tuning seat is connected to the front side of the upper die. An expansion rod is provided inside the fine-tuning seat. A resistance heating coil is provided inside the expansion rod for heating. A push-pull rod is connected to the front end of the expansion rod. The front end of the push-pull rod is located at the die lip of the front end of the upper die. A heat insulation air duct is arranged laterally on the outer side of the end of the expansion rod near the push-pull rod. A cooling air duct is arranged laterally on the outer side of the push-pull rod. A series of air outlets are provided at intervals on the surface of the heat insulation air duct and the cooling air duct. Each outer surface of the expansion rod and each outer surface of the push-pull rod have an independent air outlet.

[0005] Preferably, the heat insulation duct and the cooling duct are both air intakes at both ends, and the diameter of the air outlet gradually increases from the middle to both sides.

[0006] Preferably, a heat insulation plate a is provided on the surface of the fine-tuning seat near the expansion rod.

[0007] Preferably, a heat insulation frame is provided on the outer side of the end of the push-pull rod near the expansion rod, and a heat insulation plate b is installed on the heat insulation frame.

[0008] Preferably, oil temperature holes are provided laterally through the mold lips at the front ends of the upper and lower molds.

[0009] Preferably, the rear end of the expansion rod is threadedly connected to the fine-tuning seat via a fine-tuning screw, and the front end of the push-pull rod is positioned and connected to the front end of the upper mold via a mounting bracket.

[0010] Preferably, the upper mold has large side plates on its left and right sides, the lower mold has large side plates on its left and right sides, the upper mold has a protective cover at its front end, and the surface of the protective cover has heat dissipation holes.

[0011] This invention, through the design of a unique air-cooling and heat-insulating structure, combined with an oil temperature hole structure, can effectively control the temperature of the die head and meet the normal production requirements of solar encapsulation films. Attached Figure Description

[0012] Figure 1 This is an exploded view of the present invention;

[0013] Figure 2 This is an internal sectional view of the present invention;

[0014] Wherein: 1—Upper mold; 2—Lower mold; 3—Fine-adjustment seat; 4—Expansion rod; 5—Push-pull rod; 6—Mold lip; 7—Heat insulation air duct; 8—Cooling air duct; 9—Air outlet; 10—Heat insulation plate a; 11—Heat insulation frame; 12—Heat insulation plate b; 13—Oil temperature hole; 14—Fine-adjustment screw; 15—Mounting bracket; 16—Upper mold large side plate; 17—Lower mold large side plate; 18—Guard cover; 19—Heat dissipation hole. Detailed Implementation

[0015] The present invention will now be described in further detail with reference to the accompanying drawings.

[0016] like Figure 1 and Figure 2 As shown, this invention provides a solar encapsulation film extrusion die head with an air-cooling device, including an upper die 1 and a lower die 2 connected to each other. An extrusion channel is provided between the upper die 1 and the lower die 2. A fine-tuning seat 3 is connected to the front side of the upper die 1. An expansion rod 4 is provided inside the fine-tuning seat 3. A resistance heating coil is provided inside the expansion rod 4 for heating. A push-pull rod 5 is connected to the front end of the expansion rod 4. The front end of the push-pull rod 5 is located at the die lip 6 at the front end of the upper die 1. The temperature of the expansion rod is raised or lowered by the heating coil, thereby controlling the expansion rod's expansion. The expansion rod 4 is laterally arranged on the outer side near the push-pull rod 5 to adjust and control the mold lip opening gap. A heat insulation air duct 7 is arranged laterally on the outer side of the expansion rod 4. A cooling air duct 8 is arranged laterally on the outer side of the push-pull rod 5. A series of air outlet holes 9 are arranged at intervals on the surface of the heat insulation air duct 7 and the cooling air duct 8. Each outer surface of the expansion rod 4 and each outer surface of the push-pull rod 5 have an independent air outlet hole 9. The heat insulation air duct 7 can reduce the heat conduction from the expansion rod 4 to the push-pull rod 5, and the cooling air duct 8 can reduce the temperature of the push-pull rod 5 and reduce the heat transfer from the push-pull rod 5 to the mold lip 6.

[0017] Based on the above scheme, the heat insulation air duct 7 and the cooling air duct 8 are simultaneously supplied with air at both ends, and the diameter of the air outlet 9 gradually increases from the middle to both sides. This layout can ensure that the air outlet 9 is evenly supplied.

[0018] The fine-tuning seat 3 has a heat insulation plate a10 on the side near the expansion rod 4; the push-pull rod 5 has a heat insulation frame 11 on the outer side near the expansion rod 4, and a heat insulation plate b12 is installed on the heat insulation frame 11. This prevents the heat from the expansion rod 4 from being transferred to the upper mold 1.

[0019] In addition, oil temperature holes 13 are laterally provided at the die lips 6 at the front ends of the upper die 1 and the lower die 2. Hot oil at a constant temperature is introduced into the oil temperature holes 13 to better control the temperature of the die lips 6 and ensure the production quality during product extrusion.

[0020] Furthermore, the rear end of the expansion rod 4 is threaded onto the fine-tuning seat 3 via a fine-tuning screw 14, and the front end of the push-pull rod 5 is positioned and connected to the front end of the upper mold 1 via a mounting bracket 15. This facilitates fine-tuning of the position of the expansion rod 4.

[0021] Furthermore, the upper mold 1 is provided with upper mold large side plates 16 on the left and right sides, the lower mold 2 is provided with lower mold large side plates 17 on the left and right sides, the upper mold 1 is provided with a protective cover 18 at the front end, and the surface of the protective cover 18 is provided with heat dissipation holes 19.

[0022] This invention effectively reduces the heat transfer process from the expansion rod 4 to the push-pull rod 5 and then to the mold lip 6 by setting up heat insulation air duct 7 and cooling air duct 8. By setting up heat insulation plate a10, the heat on the expansion rod 4 is effectively blocked from being directly transferred to the upper mold 1. By setting up heat insulation plate b12, the heat on the expansion rod 4 is blocked from being directly transferred to the area where the push-pull rod 5 is located. The combination of cooling and heat insulation can ensure that the mold lip 6 is not greatly affected by the heating coil of the expansion rod 4. Finally, the oil temperature hole 13 is used to ensure the temperature stability of the mold lip 6.

[0023] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention in any way. Any simple modifications, equivalent changes, or alterations made to the above embodiments based on the technical principles of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A solar encapsulant film extrusion die with air cooling device, comprising an upper die (1) and a lower die (2) connected to each other, an extrusion channel is arranged between the upper die (1) and the lower die (2), a fine adjustment seat (3) is connected to the front side of the upper die (1), characterized in that: The fine adjustment seat (3) is provided with an expansion rod (4), the expansion rod (4) is provided with an electric resistance heating coil, the expansion rod (4) is connected with a push-pull rod (5) at the front end, the push-pull rod (5) is located at the die lip (6) of the front end of the upper die (1), the expansion rod (4) is provided with a heat insulation air pipe (7) at the outer side near the end of the push-pull rod (5), the push-pull rod (5) is provided with a cooling air pipe (8) at the outer side, a series of air outlet holes (9) are arranged on the surface of the heat insulation air pipe (7) and the cooling air pipe (8), and the expansion rod (4) and the push-pull rod (5) are correspondingly provided with independent air outlet holes (9).

2. The solar encapsulant film extrusion die with a wind cooling device according to claim 1, characterized in that: The heat insulation air pipe (7) and the cooling air pipe (8) are simultaneously provided with air inlets at two ends, and the diameter of the air outlet holes (9) gradually increases from the middle to the two sides.

3. The solar encapsulant film extrusion die with a wind cooling device according to claim 1, characterized in that: The fine adjustment seat (3) is provided with a heat insulation plate a (10) near the expansion rod (4).

4. The solar encapsulant film extrusion die with a wind cooling device according to claim 1, characterized in that: The push-pull rod (5) is provided with a heat insulation frame (11) at the outer side of the end near the expansion rod (4), and the heat insulation frame (11) is provided with a heat insulation plate b (12).

5. The solar encapsulant film extrusion die with a wind cooling device according to claim 1, wherein: The upper die (1) and the lower die (2) are provided with oil temperature holes (13) at the die lip (6) of the front end.

6. The solar encapsulant film extrusion die with a wind cooling device according to claim 1, wherein: The expansion rod (4) is threadedly connected to the fine adjustment seat (3) through a fine adjustment screw (14), and the front end of the push-pull rod (5) is positioned and connected to the front end of the upper die (1) through a mounting frame (15).

7. The solar encapsulant film extrusion die with a wind cooling device according to claim 1, wherein: The upper die (1) is provided with upper die large side plates (16) on the left and right sides, the lower die (2) is provided with lower die large side plates (17) on the left and right sides, the upper die (1) is provided with a protective cover (18) at the front end, and the protective cover (18) is provided with heat dissipation holes (19).

Images