Precise temperature control thin-wall box foaming mold

Abstract

The utility model belongs to the technical field of foaming molds, and particularly discloses a precise temperature control thin-wall box foaming mold. The mold comprises the lower mold and the upper mold, one side of the lower mold is rotationally connected with one side of the upper mold, the mold cavity is formed in the lower mold, the demolding assembly is arranged in the lower mold, automatic and efficient demolding is achieved through the demolding assembly, traditional manual operation is replaced through combination of the electric push rod and a mechanical transmission structure, and the production efficiency is improved. Compared with the prior art, the automatic demolding device has the advantages that the labor intensity of workers is greatly reduced, meanwhile, workpiece damage or incomplete demolding caused by improper manual operation is avoided, the product percent of pass is remarkably improved, the demolding process is stable and rapid through precise control of mechanical linkage, the single production cycle is shortened, and the production efficiency is improved; the stability of the demolding action and the accurate positioning of the bottom plate are ensured, a reliable basis is provided for the subsequent foaming process, the mold maintenance cost is reduced, and the practicability and durability of equipment are enhanced.

Description

Technical Field

[0001] This application relates to the field of foaming mold technology, and more specifically, to a precise temperature-controlled thin-walled box foaming mold. Background Technology

[0002] Container foaming is a technology that uses foamed materials to fill the interior of a container. This technology improves the container's insulation performance by injecting a foaming agent inside, allowing it to expand and solidify, thereby forming a sealed insulation layer. Cold container foaming technology can provide excellent insulation performance and can be used in various refrigeration, freezing, and storage equipment.

[0003] Existing foaming molds for housings consist of upper and lower molds that can be closed after the foaming agent is injected. However, after the foamed workpiece fills the mold, it needs to be manually demolded. When demolding, workers need to carefully remove the workpiece to ensure the integrity of the demolding, which is time-consuming and labor-intensive. Furthermore, manual demolding is prone to damage to the workpiece or incomplete demolding due to improper operation, which affects production efficiency and product quality. Utility Model Content

[0004] To address the aforementioned issues, this application provides a precision temperature-controlled thin-walled box foaming mold.

[0005] The precise temperature-controlled thin-walled box foaming mold provided in this application adopts the following technical solution:

[0006] A precision temperature-controlled thin-walled box foaming mold includes a lower mold and an upper mold, one side of the lower mold and one side of the upper mold are rotatably connected, the lower mold has a mold cavity inside, a demolding component inside the lower mold, and a temperature control component inside the lower mold;

[0007] The demolding assembly includes a drive unit and an ejection unit. The drive unit includes two electric push rods. The ejection unit includes a base plate. The two electric push rods are used to drive the base plate to eject for rapid demolding.

[0008] Furthermore, the bottoms of the two electric push rods are hinged to the two sides of the lower mold, and the output ends of the two electric push rods are hinged to the two sides of the upper mold. A horizontal plate is provided on one side of the upper mold.

[0009] Furthermore, the lower mold has an internal cavity with an opening on one side. The base plate is located inside the mold cavity and its structure is compatible with that of the mold cavity. A limiting groove is provided at the bottom of the base plate, and a connecting seat is slidably connected inside the limiting groove. A rotating shaft is rotatably connected inside the connecting seat.

[0010] Furthermore, a central column is fixedly connected inside the opening, and a rocker is rotatably connected to the outer wall of the central column. One end of the rocker is fixedly connected to the outer wall of the rotating shaft, and a fixing plate is fixedly connected to the end of the rocker away from the connecting seat. The top of the fixing plate is provided with a protrusion, which is made of elastic material.

[0011] Furthermore, two telescopic rods and springs are fixedly connected to the inner bottom wall of the cavity, and the top of each telescopic rod and spring is fixedly connected to the bottom of the base plate. Baffles are provided on both sides of the inner wall of the cavity.

[0012] The above technical solutions have enabled automated and efficient demolding.

[0013] Furthermore, the temperature control component includes a flow chamber, which is located inside the lower mold. An inlet pipe is provided on one side of the lower mold, and an outlet pipe is provided on the other side of the lower mold. Both the inlet pipe and the outlet pipe are connected to the flow chamber, and a valve is provided on one side of both the inlet pipe and the outlet pipe.

[0014] Furthermore, a first temperature sensor is installed around the inner wall of the mold cavity, and a second temperature sensor is installed on the top of the base plate.

[0015] Furthermore, a control panel is provided on one side of the lower mold.

[0016] The above technical solutions enable precise temperature control.

[0017] In summary, this application includes at least one of the following beneficial technical effects:

[0018] (1) This utility model achieves automated and efficient demolding through demolding components. By combining electric push rods with mechanical transmission structures, it replaces traditional manual operation, greatly reducing the labor intensity of workers. At the same time, it avoids workpiece damage or incomplete demolding caused by improper human operation, significantly improving the product qualification rate. Furthermore, the precise control of mechanical linkage makes the demolding process smooth and fast, shortening the single production cycle and improving production efficiency. In addition, the cooperation between telescopic rods and springs ensures the stability of demolding action and accurate positioning of the base plate, providing a reliable foundation for subsequent foaming processes, reducing mold maintenance costs, and enhancing the practicality and durability of the equipment.

[0019] (2) This utility model can greatly improve the production quality and efficiency of thin-walled box foaming by using temperature control components. Through real-time monitoring by multiple temperature sensors in the inner wall and bottom plate of the mold cavity, combined with the circulation of heat-conducting medium, the mold temperature can be ensured to be uniform and stable, avoiding inconsistent foam density, box deformation or surface defects caused by uneven temperature, effectively reducing the defect rate. Furthermore, through precise temperature control, the foaming material can undergo chemical reaction in the optimal temperature range, which can optimize the microstructure of the foam and enhance the physical properties of the product. At the same time, through automated temperature control, manual intervention is reduced, production continuity is improved, energy consumption and equipment wear are reduced, and the service life of the mold is extended, achieving a dual improvement in cost reduction and efficiency and product quality. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the overall structure of the port of this utility model;

[0022] Figure 3 This is a schematic diagram of the internal structure of the lower mold of this utility model;

[0023] Figure 4 This is a schematic diagram of the bottom structure of the base plate of this utility model;

[0024] Figure 5 This is a plan view of the overall internal structure of the lower mold of this utility model.

[0025] Explanation of reference numerals in the attached drawings: 1. Lower mold; 2. Upper mold; 3. Base plate; 4. Cavity; 5. Limiting groove; 6. Through port; 7. Center column; 8. Rocker; 9. Connecting seat; 10. Rotating shaft; 11. Fixing plate; 12. Protrusion; 13. Horizontal plate; 14. Electric push rod; 15. Baffle; 16. Telescopic rod; 17. Spring; 18. Flow chamber; 19. Inlet pipe; 20. First temperature sensor; 21. Second temperature sensor; 22. Outlet pipe; 23. Control panel; 24. Valve. Detailed Implementation

[0026] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0027] Reference Figures 1-5A precision temperature-controlled thin-walled box foaming mold includes a lower mold 1 and an upper mold 2. One side of the lower mold 1 and one side of the upper mold 2 are rotatably connected. The lower mold 1 has a mold cavity inside, a demolding component inside, and a temperature control component inside.

[0028] The demolding assembly includes a drive unit and an ejection unit. The drive unit includes two electric push rods 14. The ejection unit includes a base plate 3. The two electric push rods 14 are used to drive the base plate 3 to eject for rapid demolding.

[0029] Reference Figures 1-5 The bottoms of the two electric push rods 14 are hinged to the two sides of the lower mold 1, and the output ends of the two electric push rods 14 are hinged to the two sides of the upper mold 2. A horizontal plate 13 is provided on one side of the upper mold 2. A cavity 4 is opened inside the lower mold 1, and a through-hole 6 is opened on one side of the cavity 4. The bottom plate 3 is located inside the mold cavity, and the structure of the bottom plate 3 is adapted to the structure of the mold cavity. A limiting groove 5 is opened at the bottom of the bottom plate 3. A connecting seat 9 is slidably connected inside the limiting groove 5, and a rotating shaft 10 is rotatably connected inside the connecting seat 9. The through-hole 6 is fixedly connected inside. There is a central column 7, and a rocker plate 8 is rotatably connected to the outer wall of the central column 7. One end of the rocker plate 8 is fixedly connected to the outer wall of the rotating shaft 10. A fixing plate 11 is fixedly connected to the end of the rocker plate 8 away from the connecting seat 9. A protrusion 12 is provided on the top of the fixing plate 11. The protrusion 12 is made of elastic material. Two telescopic rods 16 and springs 17 are fixedly connected to the inner bottom wall of the cavity 4. The top of each telescopic rod 16 and spring 17 is fixedly connected to the bottom of the base plate 3. Baffles 15 are provided on both sides of the inner wall of the cavity 4. A control panel 23 is provided on one side of the lower mold 1.

[0030] Automatic demolding can be achieved through the demolding assembly. Specifically, after foaming is complete, the output ends of two electric push rods 14 are simultaneously extended via the control panel 23, causing the upper mold 2 to rotate upwards around the hinge point, opening the mold. When the upper mold 2 rotates to approximately 90 degrees, the horizontal plate 13 will contact the protrusion 12. At this point, the upper mold 2 continues to rotate to 90 degrees, and the horizontal plate 13 will press down on the protrusion 12 due to the rotation of the upper mold 2 (e.g., ...). Figure 3 As shown), the downward rotation of the protrusion 12 will cause the rocker arm 8 to rotate around the central column 7, which will cause the side of the rocker arm 8 near the protrusion 12 to rotate downward and the side of the rocker arm 8 near the connecting seat 9 to rotate upward (like a seesaw). Then the rocker arm 8 will cause the connecting seat 9 to rotate upward. The upward rotation of the connecting seat 9 will push the base plate 3 upward. The base plate 3 will move upward along the mold cavity, and the connecting seat 9 will slide inside the limiting groove 5. The upward push of the base plate 3 will push the workpiece out of the mold cavity, completing the demolding. At the same time, the telescopic rod 16 plays a guiding and stabilizing role during the upward movement of the base plate 3, ensuring smooth ejection.

[0031] During the second injection foaming, the electric push rod 14 will retract and close the mold. When closed, the horizontal plate 13 will move away from the protrusion 12. Without the pressure of the horizontal plate 13, the protrusion 12 will be pulled back to its original position by the action of the spring 17, awaiting the second foaming (e.g., ...). Figure 5 As shown in the figure, the baffle 15 at the bottom serves as a limit.

[0032] The demolding assembly enables automated and efficient demolding. The combination of electric push rod 14 and mechanical transmission structure replaces traditional manual operation, significantly reducing the labor intensity of workers. At the same time, it avoids workpiece damage or incomplete demolding caused by improper human operation, significantly improving the product qualification rate. Furthermore, the precise control of mechanical linkage makes the demolding process smooth and fast, shortening the single production cycle and improving production efficiency. In addition, the cooperation between telescopic rod 16 and spring 17 ensures the stability of demolding action and accurate positioning of base plate 3, providing a reliable foundation for subsequent foaming processes, reducing mold maintenance costs, and enhancing the practicality and durability of the equipment.

[0033] Reference Figures 1-5 The temperature control component includes a flow chamber 18, which is located inside the lower mold 1. A liquid inlet pipe 19 is provided on one side of the lower mold 1, and a liquid outlet pipe 22 is provided on one side of the lower mold 1. Both the liquid inlet pipe 19 and the liquid outlet pipe 22 are connected to the flow chamber 18. A valve 24 is provided on one side of both the liquid inlet pipe 19 and the liquid outlet pipe 22. A first temperature sensor 20 is provided around the inner wall of the mold cavity, and a second temperature sensor 21 is provided on the top of the bottom plate 3.

[0034] The temperature control component enables precise control and real-time adjustment of the mold temperature. Specifically, before the mold starts working, valves 24 on the inlet pipe 19 and outlet pipe 22 are opened via the control panel 23, allowing the constant-temperature heat transfer medium (such as heat transfer oil or coolant) to flow into the flow chamber 18 from the inlet pipe 19, circulate inside the mold, and then flow out from the outlet pipe 22. A first temperature sensor 20 monitors the temperature of the inner wall of the mold cavity in real time, and a second temperature sensor 21 monitors the surface temperature of the base plate 3 (temperature sensors are existing technology and will not be described in detail here). Both sensors feed the data back to the control panel 23. If the temperature is higher or lower than a preset threshold, the control system automatically adjusts the flow rate, temperature, or circulation speed of the heat transfer medium. For example, if the temperature is too high, the coolant flow rate is increased; if the temperature is too low, the heat transfer oil temperature is increased. During the foaming process, the sensors continuously collect data and dynamically adjust to ensure that the temperature inside the mold cavity is uniform and stable within the process requirements. After foaming is complete, valve 24 is closed to stop the medium circulation, achieving precise temperature control throughout the entire process.

[0035] Temperature control components can greatly improve the production quality and efficiency of thin-walled foam boxes. Real-time monitoring by three multi-zone temperature sensors on the inner wall and bottom plate of the mold cavity, combined with the circulation of heat-conducting medium, ensures uniform and stable mold temperature, avoiding inconsistent foam density, box deformation, or surface defects caused by uneven temperature, effectively reducing the defect rate. Furthermore, precise temperature control allows the foaming material to undergo chemical reactions within the optimal temperature range, optimizing the foam microstructure and enhancing the physical properties of the product. At the same time, automated temperature control reduces manual intervention, improves production continuity, reduces energy consumption and equipment wear, extends mold life, and achieves a dual improvement in cost reduction, efficiency enhancement, and product quality.

[0036] Working principle: After foaming is complete, the output ends of the two electric push rods 14 are simultaneously extended via the control panel 23, causing the upper mold 2 to rotate upward around the hinge point and open the mold. When the upper mold 2 rotates to approximately 90 degrees, the horizontal plate 13 will contact the protrusion 12. At this time, the upper mold 2 continues to rotate to 90 degrees, and the horizontal plate 13 will press down on the protrusion 12 due to the rotation of the upper mold 2 (e.g., Figure 3 As shown), the downward rotation of the protrusion 12 will cause the rocker arm 8 to rotate around the central column 7, which will cause the side of the rocker arm 8 near the protrusion 12 to rotate downward and the side of the rocker arm 8 near the connecting seat 9 to rotate upward (like a seesaw). Then the rocker arm 8 will cause the connecting seat 9 to rotate upward. The upward rotation of the connecting seat 9 will push the base plate 3 upward. The base plate 3 will move upward along the mold cavity, and the connecting seat 9 will slide inside the limiting groove 5. The upward push of the base plate 3 will push the workpiece out of the mold cavity, completing the demolding. At the same time, the telescopic rod 16 plays a guiding and stabilizing role during the upward movement of the base plate 3, ensuring smooth ejection.

[0037] During the second injection foaming, the electric push rod 14 will retract and close the mold. When closed, the horizontal plate 13 will move away from the protrusion 12. Without the pressure of the horizontal plate 13, the protrusion 12 will be pulled back to its original position by the action of the spring 17, awaiting the second foaming (e.g., ...). Figure 5 As shown in the figure, the baffle 15 at the bottom serves as a limit.

[0038] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A precision temperature-controlled thin-walled box foaming mold, comprising a lower mold (1) and an upper mold (2), wherein one side of the lower mold (1) and one side of the upper mold (2) are rotatably connected, characterized in that, The lower mold (1) has a mold cavity inside, a demolding component inside, and a temperature control component inside; The demolding assembly includes a drive unit and an ejection unit. The drive unit includes electric push rods (14), and the number of electric push rods (14) is set to two. The ejection unit includes a base plate (3). The two electric push rods (14) are used to drive the base plate (3) to eject for rapid demolding.

2. The precision temperature-controlled thin-walled box foaming mold according to claim 1, characterized in that: The bottoms of the two electric push rods (14) are respectively hinged to the two sides of the lower mold (1), and the output ends of the two electric push rods (14) are respectively hinged to the two sides of the upper mold (2). A horizontal plate (13) is provided on one side of the upper mold (2).

3. The precision temperature-controlled thin-walled box foaming mold according to claim 2, characterized in that: The lower mold (1) has a cavity (4) inside, and a through opening (6) is provided on one side of the cavity (4). The base plate (3) is located inside the mold cavity. The structure of the base plate (3) is adapted to the structure of the mold cavity. A limiting groove (5) is provided at the bottom of the base plate (3). A connecting seat (9) is slidably connected inside the limiting groove (5). A rotating shaft (10) is rotatably connected inside the connecting seat (9).

4. The precision temperature-controlled thin-walled box foaming mold according to claim 3, characterized in that: A central column (7) is fixedly connected inside the opening (6). A rocker plate (8) is rotatably connected to the outer wall of the central column (7). One end of the rocker plate (8) is fixedly connected to the outer wall of the rotating shaft (10). A fixing plate (11) is fixedly connected to the end of the rocker plate (8) away from the connecting seat (9). A protrusion (12) is provided on the top of the fixing plate (11). The protrusion (12) is made of elastic material.

5. The precision temperature-controlled thin-walled box foaming mold according to claim 4, characterized in that: The inner bottom wall of the cavity (4) is fixedly connected to two telescopic rods (16) and springs (17). The top of each telescopic rod (16) and spring (17) is fixedly connected to the bottom of the base plate (3). Baffles (15) are provided on both sides of the inner wall of the cavity (4).

6. The precision temperature-controlled thin-walled box foaming mold according to claim 5, characterized in that: The temperature control component includes a flow chamber (18), which is located inside the lower mold (1). The lower mold (1) has an inlet pipe (19) on one side and an outlet pipe (22) on one side. The inlet pipe (19) and the outlet pipe (22) are both connected to the flow chamber (18). The inlet pipe (19) and the outlet pipe (22) are both equipped with valves (24) on one side.

7. The precision temperature-controlled thin-walled box foaming mold according to claim 1, characterized in that: The inner wall of the mold cavity is provided with a first temperature sensor (20) around its perimeter, and the top of the base plate (3) is provided with a second temperature sensor (21).

8. The precision temperature-controlled thin-walled box foaming mold according to claim 1, characterized in that: A control panel (23) is provided on one side of the lower mold (1).

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