EPS foam forming preparation device

Abstract

The utility model relates to the technical field of EPS (Expandable Polystyrene) foam molding equipment, and discloses an EPS foam molding preparation device which comprises a lower mold, a limiting column fixedly mounted on the top surface of the lower mold, a top plate fixedly mounted on the top surface of the limiting column, a hydraulic cylinder fixedly mounted on the top surface of the top plate, and an upper mold plate fixedly connected with an output shaft of the hydraulic cylinder, an air inlet and an air outlet are formed in the upper die plate, an air inlet hose is fixedly installed in the air inlet, the end, away from the air inlet, of the air inlet hose is fixedly connected with a steam generator, a base and a limiting rod are fixedly installed on the bottom face of the lower die, and an air cylinder is fixedly installed on the top face of the base. EPS foam beads are placed in the lower die, the hydraulic cylinder is started, the output shaft of the hydraulic cylinder can drive the upper die plate to move downwards and complete die assembly with the lower die, the four limiting columns can effectively limit the moving position of the upper die plate, and the overall stability of the device and the accuracy of the die are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of EPS foam molding equipment, in particular to an EPS foam molding preparation device. Background Art

[0002] EPS foam, the full name of which is expanded polystyrene, is a lightweight material made of polystyrene resin as the base material, with auxiliary materials such as foaming agent added, and heated and foamed. EPS foam has many advantages, such as light weight, low thermal conductivity, low water absorption, water resistance, aging resistance, low temperature resistance, thermal insulation, sound insulation, corrosion resistance, aging resistance, cushioning and shock resistance, etc. It is widely used in construction, packaging, electronic and electrical products, ships, vehicles and other fields. In the preparation process of EPS foam, the foamed EPS foam needs to be matured for a period of time to form a stable foaming structure, and then the matured EPS foam is heated to a certain temperature and placed in a mold, where it is further expanded and fused into the desired shape.

[0003] According to the search, the Chinese patent document, announcement number: CN219486360U, discloses an EPS foam vibration molding device, which uses a vibrator and a vibration rod to transfer the vibration kinetic energy to the EPS foam in the mold cavity, so only a small kinetic energy is needed to vibrate the EPS foam in the mold cavity and make each part uniform. However, in actual use, since the temperature of the EPS foam is high when it is molded in the mold, and the device does not have relevant rapid cooling measures, not only is the preparation efficiency low, but also unnecessary waiting time is wasted; in addition, the device cannot quickly and effectively eject the foam from the mold after cooling and molding, which increases the difficulty of operation for the staff and reduces the overall practicality. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides an EPS foam molding preparation device, which has the advantages of easy operation, rapid cooling, and improved production efficiency, and solves the above-mentioned technical problems.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an EPS foam molding preparation device, comprising a lower mold, a limiting column is fixedly installed on the top surface of the lower mold, a top plate is fixedly installed on the top surface of the limiting column, a hydraulic cylinder is fixedly installed on the top surface of the top plate, an output shaft of the hydraulic cylinder is fixedly connected to an upper mold plate, an air inlet and an air outlet are opened inside the upper mold plate, an air inlet hose is fixedly installed inside the air inlet, an end of the air inlet hose away from the air inlet is fixedly connected to a steam generator, a base and a limiting rod are fixedly installed on the bottom surface of the lower mold, a cylinder is fixedly installed on the top surface of the base, a baffle is fixedly installed on the top surface of the baffle, a cooling pipe is fixedly installed inside the lower mold, a water inlet pipe and a water outlet pipe are fixedly installed on the front side of the lower mold, an end of the water inlet pipe away from the lower mold is fixedly connected to a water pump, a connecting pipe is fixedly installed on the right side of the water pump, and a radiator is fixedly connected to the right end of the connecting pipe.

[0008] Preferably, there are four limiting columns, and the upper template is slidably mounted on the outer sides of the four limiting columns.

[0009] Through the above technical solution, when the hydraulic cylinder is started, the output shaft of the hydraulic cylinder can drive the upper template to move in the vertical direction, so that the upper template and the lower mold can be closed or opened. At the same time, the four limit columns can effectively limit the position of the upper template movement, ensuring the overall stability of the device and the accuracy of the mold.

[0010] Preferably, control valves are installed inside the air inlet and the air outlet.

[0011] Through the above technical scheme, EPS foam beads are placed inside the lower mold and the mold is closed, and then the steam generator is started. The steam generator can send high-temperature steam into the lower mold and the upper mold through the air inlet hose. The EPS foam beads inside are heated by steam, and then expand due to heat to generate pressure. At this time, the polymer softens, and the sum of the pressure generated by the vaporization of the foaming agent and the pressure generated by the air in the pores is greater than the external steam pressure. The beads expand again and fill the gaps between the beads to form a whole block, so a foam plastic product with the same shape as the mold can be formed; the other two control valves can not only ensure the airtightness inside the device, but also can release high-temperature steam in time when the EPS foam is cooled and formed, thereby improving the overall practicality of the device.

[0012] Preferably, there are four limiting rods, and the baffle is slidably mounted on the outer sides of the four limiting rods.

[0013] Through the above technical solution, when the cylinder is started, the output shaft of the cylinder can drive the baffle to move in the vertical direction, and then drive the ejector pin to eject the EPS foam. At the same time, the four limit rods can effectively limit the position of the baffle movement, thereby ensuring the overall stability of the device.

[0014] Preferably, there are a plurality of ejector pins, and the top ends of the plurality of ejector pins are all installed inside the lower mold.

[0015] Through the above technical solution, the EPS foam can be effectively ejected by moving multiple ejectors driven by a cylinder. Multiple ejectors can increase the force area during demolding, disperse the demolding force, and reduce damage to the product. At the same time, multiple ejectors are arranged on the baffle, which can also ensure the consistency of ejection and ensure product quality.

[0016] Preferably, one end of the water outlet pipe away from the lower mold is fixedly connected to the right side surface of the radiator.

[0017] Through the above technical solution, the water pump is started, and the water pump can transport the coolant to the inside of the water inlet pipe and the cooling pipe in turn. At this time, the coolant can effectively dissipate heat and cool down the EPS foam inside the lower mold. After that, the coolant can flow into the inside of the radiator through the water outlet pipe to dissipate heat and cool itself, and then flow back to the inside of the water pump through the connecting pipe to complete the circulation, which not only effectively cools the EPS foam, but also improves the overall production efficiency of the device.

[0018] Compared with the prior art, the utility model provides an EPS foam molding preparation device, which has the following beneficial effects:

[0019] 1. The utility model places EPS foam beads inside the lower mold and starts the hydraulic cylinder. The output shaft of the hydraulic cylinder can drive the upper mold to move downward and close the mold with the lower mold. The four limit columns can effectively limit the moving position of the upper mold, thereby ensuring the overall stability of the device and the accuracy of the mold. Then, the steam generator is started. The steam generator can send high-temperature steam into the lower mold and the upper mold through the air intake hose. The EPS foam beads inside are heated by the steam, and then expand due to the heat to generate pressure. At this time, the polymer softens, and the sum of the pressure generated by the vaporization of the foaming agent and the pressure generated by the air in the pores is greater than the external steam pressure. The beads expand again and fill the gaps between the beads to form a whole block, so a foam plastic product with the same shape as the mold can be formed.

[0020] 2. The utility model starts the water pump, which can transport the coolant to the inside of the water inlet pipe and the cooling pipe in turn. At this time, the coolant can effectively dissipate heat and cool down the EPS foam inside the lower mold. Thereafter, the coolant can flow into the inside of the radiator through the water outlet pipe to dissipate heat and cool itself, and then flow back to the inside of the water pump through the connecting pipe to complete the cycle, which not only effectively cools the EPS foam, but also improves the overall production efficiency of the device; the cylinder is started, and the output shaft of the cylinder can drive the baffle and multiple ejectors to move in the vertical direction, and the multiple ejectors can then eject the EPS foam. At the same time, the multiple ejectors can increase the force area during demoulding, disperse the demoulding force, and reduce damage to the product. The baffle can also ensure the consistency of the ejection of multiple ejectors, thereby ensuring product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional schematic diagram of the structure of the utility model;

[0022] Figure 2 It is a front cross-sectional schematic diagram of the template and other parts of the structure of the utility model;

[0023] Figure 3 It is a top view cross-sectional schematic diagram of the mold and other parts under the structure of the utility model.

[0024] Among them: 1. Lower mold; 2. Limit column; 3. Ejector plate; 4. Hydraulic cylinder; 5. Upper mold plate; 6. Air inlet; 7. Air outlet; 8. Air inlet hose; 9. Steam generator; 10. Base; 11. Limit rod; 12. Cylinder; 13. Baffle; 14. Ejector pin; 15. Cooling pipe; 16. Water inlet pipe; 17. Water outlet pipe; 18. Water pump; 19. Connecting pipe; 20. Radiator; 21. Control valve. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-3A EPS foam molding preparation device comprises a lower mold 1, a limiting column 2 is fixedly installed on the top surface of the lower mold 1, a top plate 3 is fixedly installed on the top surface of the limiting column 2, a hydraulic cylinder 4 is fixedly installed on the top surface of the top plate 3, an output shaft of the hydraulic cylinder 4 is fixedly connected to an upper mold plate 5, an air inlet 6 and an air outlet 7 are opened inside the upper mold plate 5, an air inlet hose 8 is fixedly installed inside the air inlet 6, and a steam generator 9 is fixedly connected to the end of the air inlet hose 8 away from the air inlet 6, and a bottom is fixedly installed on the bottom surface of the lower mold 1. The base 10 and the limit rod 11, the top surface of the base 10 is fixedly installed with a cylinder 12, the output shaft of the cylinder 12 is fixedly connected with a baffle 13, the top surface of the baffle 13 is fixedly installed with an ejector pin 14, the interior of the lower mold 1 is fixedly installed with a cooling pipe 15, the front side of the lower mold 1 is fixedly installed with a water inlet pipe 16 and a water outlet pipe 17, the end of the water inlet pipe 16 away from the lower mold 1 is fixedly connected with a water pump 18, the right side of the water pump 18 is fixedly installed with a connecting pipe 19, and the right end of the connecting pipe 19 is fixedly connected with a radiator 20.

[0027] Specifically, there are four limit columns 2, and the upper template 5 is slidably mounted on the outer sides of the four limit columns 2. The advantage is that, through this structure, when the hydraulic cylinder 4 is started, the output shaft of the hydraulic cylinder 4 can drive the upper template 5 to move in the vertical direction, and then the upper template 5 and the lower mold 1 can complete the mold closing or mold opening, and at the same time, the four limit columns 2 can effectively limit the position of the upper template 5, thereby ensuring the overall stability of the device and the accuracy of the mold.

[0028] Specifically, the air inlet 6 and the air outlet 7 are both installed with control valves 21. The advantage is that, through this structure, the EPS foam beads are placed inside the lower mold 1 and the mold is closed, and then the steam generator 9 is started. The steam generator 9 can send high-temperature steam to the inside of the lower mold 1 and the upper mold plate 5 through the air inlet hose 8, and the EPS foam beads inside are heated by steam, and then expand due to heat to generate pressure. At this time, the polymer softens, and the sum of the pressure generated by the vaporization of the foaming agent and the pressure generated by the air in the pores is greater than the external steam pressure. The beads expand again and fill the gaps between the beads to form a whole block, so that a foam plastic product with the same shape as the mold can be formed; the other two control valves 21 can not only ensure the airtightness inside the device, but also can release high-temperature steam in time when the EPS foam is cooled and formed, thereby improving the overall practicality of the device.

[0029] Specifically, there are four limit rods 11, and the baffle 13 is slidably mounted on the outer sides of the four limit rods 11. The advantage is that, through this structure, when the cylinder 12 is started, the output shaft of the cylinder 12 can drive the baffle 13 to move in the vertical direction, and then drive the ejector pin 14 to eject the EPS foam, and at the same time, the four limit rods 11 can effectively limit the moving position of the baffle 13, thereby ensuring the overall stability of the device.

[0030] Specifically, there are multiple ejector pins 14, and the top ends of the multiple ejector pins 14 are all installed inside the lower mold 1. The advantage is that the multiple ejector pins 14 can be driven by the cylinder 12 to move, so that the EPS foam can be effectively ejected. The multiple ejector pins 14 can increase the force area during demoulding, disperse the demoulding force, and reduce damage to the product. At the same time, the multiple ejector pins 14 are all arranged on the baffle 13, which can also ensure the consistency of ejection and ensure product quality.

[0031] Specifically, one end of the water outlet pipe 17 away from the lower mold 1 is fixedly connected to the right side surface of the radiator 20. The advantage is that by starting the water pump 18 through this structure, the water pump 18 can sequentially deliver the coolant to the inside of the water inlet pipe 16 and the cooling pipe 15, at which time the coolant can effectively dissipate heat and cool down the EPS foam inside the lower mold 1, and then the coolant can flow into the inside of the radiator 20 through the water outlet pipe 17 to dissipate heat and cool down itself, and can flow back to the inside of the water pump 18 through the connecting pipe 19 to complete the cycle, which not only effectively cools the EPS foam, but also improves the overall production efficiency of the device.

[0032] When in use, EPS foam beads are placed inside the lower mold 1 and the hydraulic cylinder 4 is started. The output shaft of the hydraulic cylinder 4 can drive the upper mold plate 5 to move downward and complete the mold closing with the lower mold 1. The four limit columns 2 can effectively limit the moving position of the upper mold plate 5, thereby ensuring the overall stability of the device and the accuracy of the mold; then the steam generator 9 is started. The steam generator 9 can send high-temperature steam into the lower mold 1 and the upper mold plate 5 through the air intake hose 8. The EPS foam beads inside are heated by the steam, and then expand due to the heat to generate pressure. At this time, the polymer softens, and the sum of the pressure generated by the vaporization of the foaming agent and the pressure generated by the air in the pores is greater than the external steam pressure. The beads expand again and fill the gaps between the beads to form a whole block, so a foam plastic product with the same shape as the mold can be formed; then the water pump 18 is started, and the water The pump 18 can transport the coolant to the inside of the water inlet pipe 16 and the cooling pipe 15 in sequence. At this time, the coolant can effectively dissipate heat and cool down the EPS foam inside the lower mold 1. Thereafter, the coolant can flow into the inside of the radiator 20 through the water outlet pipe 17 to dissipate heat and cool itself, and then flow back to the inside of the water pump 18 through the connecting pipe 19 to complete the circulation, which not only effectively cools the EPS foam, but also improves the overall production efficiency of the device; start the cylinder 12, and the output shaft of the cylinder 12 can drive the baffle 13 and multiple ejector pins 14 to move in the vertical direction. The multiple ejector pins 14 can then eject the EPS foam. At the same time, the multiple ejector pins 14 can increase the force area during demolding, disperse the demolding force, and reduce damage to the product. The baffle 13 can also ensure the consistency of the ejection of the multiple ejector pins 14, thereby ensuring product quality.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An EPS foam molding preparation device, comprising a lower mold (1), characterized in that: A limiting column (2) is fixedly mounted on the top surface of the lower mold (1), a top plate (3) is fixedly mounted on the top surface of the limiting column (2), a hydraulic cylinder (4) is fixedly mounted on the top surface of the top plate (3), an output shaft of the hydraulic cylinder (4) is fixedly connected to an upper mold plate (5), an air inlet (6) and an air outlet (7) are provided inside the upper mold plate (5), an air inlet hose (8) is fixedly mounted inside the air inlet (6), and a steam generator (9) is fixedly connected to one end of the air inlet hose (8) away from the air inlet (6), a base (10) and a limiting rod (11) are fixedly mounted on the bottom surface of the lower mold (1), A cylinder (12) is fixedly mounted on the top surface of the base (10); a baffle (13) is fixedly connected to the output shaft of the cylinder (12); an ejector pin (14) is fixedly mounted on the top surface of the baffle (13); a cooling pipe (15) is fixedly mounted inside the lower mold (1); a water inlet pipe (16) and a water outlet pipe (17) are fixedly mounted on the front side of the lower mold (1); a water pump (18) is fixedly connected to one end of the water inlet pipe (16) away from the lower mold (1); a connecting pipe (19) is fixedly mounted on the right side of the water pump (18); and a radiator (20) is fixedly connected to the right end of the connecting pipe (19).

2. The EPS foam molding and preparation device according to claim 1, characterized in that: The number of the limiting columns (2) is four, and the upper template (5) is slidably mounted on the outer sides of the four limiting columns (2).

3. The EPS foam molding and preparation device according to claim 1, characterized in that: Control valves (21) are installed inside the air inlet (6) and the air outlet (7).

4. The EPS foam molding and preparation device according to claim 1, characterized in that: The number of the limiting rods (11) is four, and the baffles (13) are slidably mounted on the outer sides of the four limiting rods (11).

5. The EPS foam molding and preparation device according to claim 1, characterized in that: The ejector pins (14) are provided in a plurality, and the top ends of the plurality of ejector pins (14) are all installed inside the lower mold (1).

6. The EPS foam molding and preparation device according to claim 1, characterized in that: One end of the water outlet pipe (17) away from the lower mold (1) is fixedly connected to the right side surface of the radiator (20).

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