Cooling device for forming a foam packaging box

Abstract

The utility model discloses a foamed packaging box forming cooling device relates to mould cooling technical field, including the shell body, the shell body bottom fixed mounting has the installation base, is fixedly installed on the installation base and has the lower mould, and the electric heating tube is coiled on the lower mould, and the cooling mechanism is connected to the lower mould, and the cooling mechanism includes the cooling coil pipe that coiled on the lower mould, and the first communication pipe is connected to the cooling coil pipe, and the cylinder body is connected to the first communication pipe, and the piston is movably installed in the cylinder body, and the driving mechanism is connected to the cylinder body, and the cooling mechanism still includes the water inlet that sets up in the middle position of cylinder body bottom, and the cooling water pipe is connected to the water inlet, and the cooling water pipe end is immersed in the cooling water. This foamed packaging box forming cooling device, through the cooperation of cooling mechanism and driving mechanism, can cool the lower mould, make the workpiece rapid setting, and can avoid the cooling water that remains in the cooling coil pipe absorbs the heat that electric heating tube produces, promotes the efficiency that electric heating pipe heats the lower mould.

Description

Technical Field

[0001] This utility model relates to the field of mold cooling technology, specifically a cooling device for molding foam packaging boxes. Background Technology

[0002] Foam boxes are lightweight and durable packaging containers, typically made of foam materials such as polystyrene (EPS) or polyethylene (EPE). Their interiors are filled with air bubbles, providing excellent cushioning, insulation, and shock absorption. They effectively protect fragile items, fresh food, or precision instruments from impacts, compression, or temperature fluctuations during transportation.

[0003] In the prior art, patent announcement number CN222904690U discloses a molding die for producing foam boxes that can be cooled quickly, including a fixed frame, a lower molding die placed in the middle of the fixed frame, and an upper molding die disposed above the lower molding die. The cooling assembly includes a cooling water inlet pipe installed at the front end of the lower molding die, a cooling channel opened at the bottom of the lower molding die, and a cooling water outlet pipe installed at the rear end of the lower molding die.

[0004] The foam packaging box mold is equipped with two systems: a heating element and a cooling channel. The main function of the heating element is to heat the mold, melting the raw material to facilitate precise shaping. After the shaping process is complete, cooling water circulates through the pre-set cooling channel, rapidly cooling the mold and ensuring the workpiece sets quickly and stably. However, in actual operation, the cooling system often faces a problem: some cooling water remains in the cooling channel after circulation. This residual cooling water inevitably absorbs the heat generated when the heating element is restarted. This not only partially cancels out the heat generated by the heating element but also directly affects the heating efficiency of the heating element on the mold. Utility Model Content

[0005] The purpose of this invention is to provide a cooling device for molding foam packaging boxes to solve the problems in the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a cooling device for forming foam packaging boxes, comprising an outer shell, a mounting base fixedly installed at the bottom of the outer shell, a lower mold fixedly installed on the mounting base, an electric heating tube wound around the lower mold, a cooling mechanism connected to the lower mold, the cooling mechanism comprising a cooling coil wound around the lower mold, a first connecting pipe connected to the cooling coil, a cylinder connected to the first connecting pipe, a piston movably installed inside the cylinder, and a driving mechanism connected to the cylinder.

[0007] Preferably, the cooling mechanism further includes a water inlet located at the middle of the bottom of the cylinder, a cooling water pipe connected to the water inlet with the end of the cooling water pipe submerged in the cooling water, an air inlet on one side of the water inlet and a discharge outlet on the other side of the water inlet, and a one-way valve in each of the air inlet, water inlet and discharge outlet, with the diameter of the air inlet being smaller than the diameter of the water inlet.

[0008] Preferably, one end of the first connecting pipe is connected to the cooling coil, and the other end of the first connecting pipe is connected to the cylinder body through the discharge port. A water cooling mechanism is connected to the cooling coil. The water cooling mechanism includes a recovery pipe connected to the end of the cooling coil. A separation tank is connected to the end of the recovery pipe. An exhaust port is opened at the upper end of the separation tank. A second connecting pipe is connected to the bottom of the separation tank. A water cooler is connected to the end of the second connecting pipe. A fan is fixedly installed on one side of the water cooler.

[0009] Preferably, the cooling water pipe is connected to the cylinder body through the water inlet, the one-way valve in the air inlet only allows air to enter the cylinder body through the air inlet, the one-way valve in the water inlet only allows cooling water in the cooling water pipe to enter the cylinder body through the water inlet, and the one-way valve in the discharge port only allows air and cooling water in the cylinder body to be discharged through the discharge port.

[0010] Preferably, the drive mechanism includes a mechanism housing fixedly mounted on the cylinder body, an installation port is provided at the bottom of the mechanism housing, a cylinder is fixedly mounted at the upper end of the mechanism housing, a connecting plate is fixedly mounted at the output end of the cylinder, a connecting through hole is provided at the edge of the connecting plate, and the connecting plate is fixedly mounted on the piston, and positioning feet are fixedly mounted at the four corners of the bottom of the mechanism housing.

[0011] Preferably, a bolt is connected inside the connecting through hole, and the connecting plate is fixedly installed on the piston by the bolt.

[0012] Preferably, the upper end of the mechanism housing has a through hole, and the output end of the cylinder extends into the mechanism housing through the through hole.

[0013] Preferably, the piston is fixedly mounted on the output end of the cylinder via a connecting plate.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. In this application, when the piston moves towards the upper end of the cylinder, the cooling water in the cooling water pipe is drawn into the cylinder, and some air is also drawn into the cylinder. When the piston moves towards the lower end of the cylinder, the cooling water in the cylinder is squeezed out first, and the squeezed-out cooling water flows into the cooling coil, thereby rapidly reducing the temperature of the lower mold.

[0016] 2. After the cooling process in this application is completed, the piston can continue to move downwards to squeeze out the air in the cylinder. The squeezed-out air will enter the cooling coil, thereby discharging the residual cooling water in the cooling coil, preventing the residual cooling water in the cooling coil from absorbing the heat generated by the heating element, and improving the heating efficiency of the heating element on the lower mold.

[0017] 3. In this application, both the high-temperature cooling water and air discharged from the cooling coil enter the separator. The air entering the separator is discharged through the exhaust port, while the high-temperature cooling water is discharged through the connecting pipe, thereby achieving gas-liquid separation. The high-temperature cooling water discharged through the connecting pipe enters the water cooler, where the temperature is reduced by the fan, thus achieving the recycling of the high-temperature cooling water. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a partial structural schematic diagram of the present invention; Figure 3 This is a schematic diagram of the cooling mechanism of this utility model; Figure 4 This utility model Figure 3 Enlarged view of point A in the middle; Figure 5 This is a schematic diagram of the drive mechanism of this utility model; Figure 6 This is a schematic diagram of the water cooling mechanism of this utility model.

[0019] The diagram shows the following markings: 1. Lower mold; 2. Outer shell; 3. Mounting base; 4. Heating element; 5. Cooling mechanism; 501. Cooling coil; 502. Cylinder; 503. Piston; 504. First connecting pipe; 505. Air inlet; 506. Water inlet; 507. Cooling water pipe; 508. Discharge port; 509. Check valve; 6. Drive mechanism; 601. Cylinder; 602. Mechanism housing; 603. Connecting plate; 604. Connecting through hole; 605. Mounting port; 606. Positioning support; 7. Water cooling mechanism; 701. Water cooler; 702. Fan; 703. Exhaust port; 704. Separator; 705. Recovery pipe; 706. Second connecting pipe. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] like Figure 1 and Figure 2 As shown, the present invention provides a technical solution for a cooling device for forming foam packaging boxes, including an outer shell 2, an installation base 3 fixedly installed at the bottom of the outer shell 2, a lower mold 1 fixedly installed on the installation base 3, an electric heating tube 4 coiled on the lower mold 1, a cooling mechanism 5 connected to the lower mold 1, and a driving mechanism 6 connected to the cylinder 502.

[0022] The heating element 4 can heat the lower mold 1, causing the raw material inside the lower mold 1 to melt, which facilitates the shaping of the raw material. Through the cooperation of the cooling mechanism 5 and the driving mechanism 6, the lower mold 1 can be cooled, so that the workpiece can be quickly shaped. It can also prevent the cooling water remaining in the cooling coil 501 from absorbing the heat generated by the heating element 4, thereby improving the efficiency of the heating element 4 in heating the lower mold 1.

[0023] Example 1: As Figure 2 , Figure 3 and Figure 4 As shown, the cooling mechanism 5 includes a cooling coil 501 coiled on the lower mold 1, a first connecting pipe 504 connected to the cooling coil 501, a cylinder 502 connected to the first connecting pipe 504, a piston 503 movably installed inside the cylinder 502, and a water inlet 506 located at the middle of the bottom of the cylinder 502. A cooling water pipe 507 is connected to the water inlet 506, and the end of the cooling water pipe 507 is immersed in the cooling water. An air inlet 505 is provided on one side of the water inlet 506, and a discharge port 508 is provided on the other side. A one-way valve 509 is provided in the air inlet 505, the water inlet 506, and the discharge port 508. One end of the first connecting pipe 504 is connected to the cooling coil 501, and the other end of the first connecting pipe 504 is connected to the cylinder 502 through the discharge port 508.

[0024] Specifically, when the piston 503 begins to move towards the lower end of the cylinder 502, the cooling water inside the cylinder 502 is first compressed. This compression forces the cooling water out of the cylinder 502 and quickly flows into the cooling coil 501. In this way, the cooling coil 501 can effectively absorb the heat of the cooling water, thereby rapidly and effectively cooling the lower mold 1. After the cooling process of the lower mold 1 is completed, the piston 503 can continue its downward movement. During this process, the air inside the cylinder 502 is also gradually squeezed out. The squeezed-out air then enters the cooling coil 501, helping to completely expel any remaining cooling water in the cooling coil 501, effectively preventing this remaining cooling water from absorbing the heat generated by the heating element 4 during the heating process. In this way, the heating efficiency of the heating element 4 on the lower mold 1 can be significantly improved, ensuring that the entire heating process is more efficient and stable.

[0025] Example 2: Figure 2 and Figure 5 As shown, the drive mechanism 6 includes a mechanism housing 602 fixedly mounted on the cylinder body 502. The bottom of the mechanism housing 602 has an installation port 605. A cylinder 601 is fixedly mounted on the upper end of the mechanism housing 602. A connecting plate 603 is fixedly mounted on the output end of the cylinder 601. A connecting through hole 604 is opened at the edge of the connecting plate 603, and the connecting plate 603 is fixedly mounted on the piston 503. Positioning feet 606 are fixedly mounted at the four corners of the bottom of the mechanism housing 602. Bolts are connected in the connecting through hole 604, and the connecting plate 603 is fixedly mounted on the piston 503 by bolts.

[0026] Specifically, the cylinder 601 can be controlled to extend and retract. When the cylinder 601 extends or retracts, its internal piston rod moves accordingly, thereby driving the connecting plate 603, which is closely connected to it, to move up and down. During the up-and-down movement of the connecting plate 603, the piston 503 also moves up and down reciprocally inside the cylinder body 502. This series of linked actions ultimately ensures the smooth operation of the cooling mechanism 5.

[0027] Please refer to Figure 6 As shown in Embodiment 3: A water-cooling mechanism 7 is connected to the cooling coil 501. The water-cooling mechanism 7 includes a recovery pipe 705 connected to the end of the cooling coil 501. A separation tank 704 is connected to the end of the recovery pipe 705. An exhaust port 703 is provided at the upper end of the separation tank 704. A second connecting pipe 706 is connected to the bottom of the separation tank 704. A water cooler 701 is connected to the end of the second connecting pipe 706. A fan 702 is fixedly installed on one side of the water cooler 701.

[0028] Specifically, the high-temperature cooling water discharged from the cooling coil 501 during operation, along with the air mixed with it, is guided into the separator 704. The air entering the separator 704 is smoothly discharged outside the tank through a specially designed exhaust port 703. Simultaneously, the high-temperature cooling water is discharged from the separator 704 through the second connecting pipe 706. This process effectively achieves gas-liquid separation, ensuring the normal operation of the system. The high-temperature cooling water discharged through the second connecting pipe 706 then enters the water cooler 701. Inside the water cooler 701, the high-temperature cooling water is rapidly cooled by the strong airflow generated by the fan 702. After this cooling process, the high-temperature cooling water can be recycled and reused, thereby improving the system's energy efficiency and overall operational economy.

[0029] Working Principle: During operation, the cylinder 601 can be controlled to extend and retract, which drives the piston 503 to move up and down within the cylinder 502. When the piston 503 moves upwards towards the cylinder 502, the cooling water in the cooling water pipe 507 is drawn into the cylinder 502, and some air is also drawn into the cylinder 502. When the piston 503 moves downwards towards the cylinder 502, the cooling water in the cylinder 502 is first squeezed out and enters the cooling coil 501, thereby quickly cooling the lower mold 1. After cooling is complete, the piston 503 can continue to move downwards, thereby squeezing out the air in the cylinder 502. The squeezed air enters the cooling coil 501, thereby discharging the residual cooling water in the cooling coil 501, preventing the residual cooling water in the cooling coil 501 from absorbing the heat generated by the heating element 4, and improving the efficiency of the heating element 4 in heating the lower mold 1.

[0030] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A cooling device for forming foam packaging boxes, comprising an outer shell (2), wherein a mounting base (3) is fixedly installed at the bottom of the outer shell (2), a lower mold (1) is fixedly installed on the mounting base (3), and an electric heating tube (4) is wound on the lower mold (1), characterized in that: A cooling mechanism (5) is connected to the lower mold (1). The cooling mechanism (5) includes a cooling coil (501) coiled on the lower mold (1). A first connecting pipe (504) is connected to the cooling coil (501). A cylinder (502) is connected to the first connecting pipe (504). A piston (503) is movably installed inside the cylinder (502). A drive mechanism (6) is connected to the cylinder (502).

2. The cooling device for forming foam packaging boxes according to claim 1, characterized in that: The cooling mechanism (5) also includes a water inlet (506) located at the middle of the bottom of the cylinder (502). A cooling water pipe (507) is connected to the water inlet (506), and the end of the cooling water pipe (507) is submerged in the cooling water. An air inlet (505) is provided on one side of the water inlet (506), and a discharge port (508) is provided on the other side of the water inlet (506). A one-way valve (509) is provided in the air inlet (505), the water inlet (506), and the discharge port (508). The diameter of the air inlet (505) is smaller than the diameter of the water inlet (506).

3. The cooling device for forming foam packaging boxes according to claim 2, characterized in that: One end of the first connecting pipe (504) is connected to the cooling coil (501), and the other end of the first connecting pipe (504) is connected to the cylinder (502) through the discharge port (508). A water cooling mechanism (7) is connected to the cooling coil (501). The water cooling mechanism (7) includes a recovery pipe (705) connected to the end of the cooling coil (501). The end of the recovery pipe (705) is connected to a separation tank (704). An exhaust hole (703) is opened at the upper end of the separation tank (704). A second connecting pipe (706) is connected to the bottom of the separation tank (704). A water cooler (701) is connected to the end of the second connecting pipe (706). A fan (702) is fixedly installed on one side of the water cooler (701).

4. The cooling device for forming foam packaging boxes according to claim 3, characterized in that: The cooling water pipe (507) is connected to the cylinder block (502) through the water inlet (506).

5. The cooling device for forming foam packaging boxes according to claim 4, characterized in that: The drive mechanism (6) includes a mechanism housing (602) fixedly mounted on the cylinder body (502). The mechanism housing (602) has an installation port (605) at the bottom. A cylinder (601) is fixedly mounted on the upper end of the mechanism housing (602). A connecting plate (603) is fixedly mounted on the output end of the cylinder (601). A connecting through hole (604) is opened at the edge of the connecting plate (603). The connecting plate (603) is fixedly mounted on the piston (503). Positioning feet (606) are fixedly mounted at the four corners of the bottom of the mechanism housing (602).

6. The cooling device for forming foam packaging boxes according to claim 5, characterized in that: Bolts are connected inside the connecting through hole (604), and the connecting plate (603) is fixedly installed on the piston (503) by bolts.

7. The cooling device for forming foam packaging boxes according to claim 6, characterized in that: The upper end of the housing (602) of the mechanism is provided with a through hole, and the output end of the cylinder (601) extends into the housing (602) through the through hole.

8. The cooling device for forming foam packaging boxes according to claim 7, characterized in that: The piston (503) is fixedly installed on the output end of the cylinder (601) via a connecting plate (603).

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