Forming device for electric appliance packaging box foam

Abstract

The utility model discloses a foam forming device for an electric appliance packaging box, and belongs to the field of foam forming. The forming device for the electric appliance packaging box foam comprises a shell, a shaping cavity is formed in the shell in a sunken mode, a pressing block used for extruding and shaping is arranged at the upper end of the outer portion of the shaping cavity, and a sealing piece is arranged on the outer portion of the pressing block in a surrounding mode. The device solves the problems that according to an existing device capable of rapidly shaping foam, gas is detained in the foam after being limited by an extrusion structure, a cavity generated by the foam enables a sunken area to exist during follow-up foam cutting, wrapping of the foam on an electric appliance is affected, damping is carried out, and the protection capacity is reduced. The air suction port can be exposed through movement of the transmission plate, air generated in the pressing process can be exhausted through exposure of the air suction port and extraction of the draught fan, and the situation that after foam is formed, a recess and a cavity are formed by the air can be avoided through exhausting of the air.

Description

Technical Field

[0001] The utility model relates to the field of foam molding, in particular to a foam molding device for an electrical appliance packaging box. Background Art

[0002] The electrical appliance packaging box foam molding device is a device used to manufacture the foam material used inside the electrical appliance packaging box. This device usually uses specific materials and processes. After heating and expanding the benzene and styrene raw materials, the high-temperature expanded particles are put into the electrical appliance packaging box foam molding device and pressed to complete the shaping;

[0003] A Chinese patent with publication number CN216968450U discloses a device for quickly shaping foam, including a mobile motor, a burr cutter, a threaded rod, a rotating gear, a belt, and a support block. The mobile motor is started to rotate the threaded rod, which drives the rotating gear to rotate. The two rotating gears rotate at the same speed through the belt, so that the two threaded rods rotate synchronously. A thread is provided in the support block. The rotation of the threaded rod allows the burr cutter to move in a horizontal direction. The burr cutter can cut off excess burrs, which is beneficial for cutting off the burrs generated when the foam is shaped.

[0004] The foam quick shaping device of the above patent can only achieve shaping during the extrusion process. During the foam shaping process, the gas inside the foam material cannot be discharged smoothly. The gas will be retained inside the foam after being restricted by the extrusion structure. The cavity generated by the foam will cause a concave area during the subsequent foam cutting, which will affect the foam's wrapping of the electrical appliance and shock absorption, and reduce the protection ability. Utility Model Content

[0005] The purpose of the utility model is to provide a foam forming device for an electrical packaging box. The air intake port can be exposed through the movement of a transmission plate. The exposure of the air intake port and the extraction of a fan can realize the discharge of gas generated during the pressing process. The discharge of gas can avoid the formation of depressions and cavities inside the foam after foam molding due to gas, thereby solving the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a foam molding device for an electrical appliance packaging box, comprising a shell, a shaping cavity is arranged in a recessed manner inside the shell, a pressing block for extrusion and shaping is arranged at the upper end outside the shaping cavity, a sealing member is arranged around the outside of the pressing block, a movable active cavity is arranged inside the pressing block, a transmission plate is arranged at the lower end inside the movable cavity, a recessed cavity is arranged in an array toward the lower end inside the pressing block, and an air intake port is arranged in an array inside the recessed cavity.

[0007] Preferably, the air inlet penetrates and extends to the inner and outer ends of the pressing block, and the diameter of the air inlet is smaller than that of the foam particles.

[0008] Preferably, the interior of the air intake port is filled with a filling column, and the exterior of the filling column is connected to the internal slot of the air intake port.

[0009] Preferably, second connecting frames are provided at the four corners of the upper end of the transmission plate, the lower end of the second connecting frame is fixedly connected to the transmission plate by bolts, and one side of the four second connecting frames is provided with a second hydraulic rod for transmission and support, and the two ends of the second hydraulic rod are respectively welded and fixed to the second connecting frame and the inside of the pressing block.

[0010] Preferably, a first hydraulic rod is arranged in the middle of the upper end of the pressing block, and a fan is arranged on one side of the first hydraulic rod.

[0011] Preferably, the upper end of the first hydraulic rod and the lower end of the housing are fixed by welding via a first connecting frame.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] 1. In the utility model, when the first hydraulic rod is extended and retracted and the pressing block is embedded in the shell, the filling column moves and exposes the air inlet, and the gas can pass through the air inlet and be extracted and discharged by the fan, actively avoiding the gas from being restricted inside the foam during the pressing process, and the air inlet with a smaller diameter than the foam can limit the inflow of foam. When the air inlet at the lower end of the pressing block is completely in contact with the extruded foam, the gas inside the shaping cavity and the gas inside the foam can be extracted by the fan, and the gas can be exhausted, thereby achieving efficient foam extrusion, avoiding the reduction of the foam forming effect, and facilitating the subsequent wrapping and protection of the electrical appliance. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional diagram of the overall external structure of the utility model;

[0015] Figure 2 This is a cross-sectional view of the internal structure of the shell of the utility model;

[0016] Figure 3 For the utility model Figure 2 A partial enlarged view of the middle A area;

[0017] Figure 4 For the utility model Figure 2 A partial enlarged view of the middle B area;

[0018] Figure 5 This is a schematic diagram of the position relationship of the air intake port of the utility model.

[0019] In the figure: 1. outer shell; 2. first hydraulic rod; 3. first connecting frame; 4. shaping cavity; 5. transmission pipe; 6. pump; 7. radiator; 8. fan; 9. pressing block; 10. sealing member; 11. liquid flow cavity; 12. heat sink; 13. movable cavity; 14. transmission plate; 15. recessed cavity; 16. pressing block; 17. filling column; 18. air inlet; 19. second hydraulic rod; 20. second connecting frame. DETAILED DESCRIPTION

[0020] 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.

[0021] In order to solve the problem that the existing foam quick shaping device can only achieve shaping during the extrusion process, but the gas inside the foam material cannot be discharged smoothly during the foam shaping process, and the gas will be retained inside the foam after being restricted by the extrusion structure, and the cavity generated by the foam will cause a concave area when the foam is subsequently cut, which affects the foam wrapping and shock absorption of the electrical appliance and reduces the protection ability, this embodiment provides the following technical solutions:

[0022] A foam forming device for an electrical appliance packaging box, comprising a housing 1, such as Figure 1 As shown, a shaping cavity 4 is provided in the inner recess of the shell 1. During the foam molding process, preheated benzene and styrene raw material expansion particles are put in to squeeze the foam in the inner position of the shaping cavity 4 to achieve shaping. A pressing block 9 for squeezing and shaping is provided at the upper end of the outer side of the shaping cavity 4. The pressing block 9 can be moved longitudinally toward the shaping cavity 4 to achieve squeezing of the foam material inside the shaping cavity 4. The inner side of the shell 1 is connected to the outer card slot of the pressing block 9. A sealing member 10 is provided around the outer side of the pressing block 9. The sealing member 10 made of rubber material surrounds the pressing block 9 so that the sealing member 10 can achieve sealing of the area between the pressing block 9 and the shell 1 during the movement of the pressing block 9, which is convenient for foam shaping and avoids leakage of foam due to pressing due to gaps. The sealing improves the shaping effect.

[0023] In this embodiment, a movable cavity 13 is provided inside the pressing block 9, and a transmission plate 14 is provided at the lower end of the movable cavity 13. Figure 2 , Figure 3 and Figure 5As shown, the lower end of the transmission plate 14 facing the inside of the pressing block 9 is provided with a recessed cavity 15 in an array, and the inner part of the recessed cavity 15 is provided with an air inlet 18 in an array. The recessed cavity 15 is recessed inside the pressing block 9, and the air inlet 18 penetrates and extends to the inner and outer ends of the pressing block 9. The air between the active cavity 13 and the shaping cavity 4 is connected through the air inlet 18, so that when the pressing block 9 is pressed downward, the gas inside the foam and the gas inside the shaping cavity 4 can pass through the air inlet 18 and be discharged;

[0024] In this embodiment, if Figure 3 As shown, the interior of the air intake port 18 is filled with a filling column 17, and the exterior of the filling column 17 is connected to the internal slot of the air intake port 18, and the filling column 17 in the recessed cavity 15 is welded and fixed by a pressing block 16, and the exterior of the pressing block 16 is connected to the slot of the recessed cavity 15. When the filling column 17 is filled into the interior of the air intake port 18, the filling column 17 can be supported by the pressing block 16. While supporting, the filling column 17 can be taken out by pulling the pressing block 16, and the cavity inside the shaped foam can be avoided by the discharge of gas. The pressing block 16 and the transmission plate 14 are an integrated structure, and the opening and closing of the air intake port 18 can be controlled by the movement of the transmission plate 14;

[0025] In this embodiment, the four corners of the upper end of the transmission plate 14 are each provided with a second connecting frame 20. Figure 2 and Figure 4 As shown, the lower end of the second connecting frame 20 is fixedly connected to the transmission plate 14 by bolts, and one side of each of the four second connecting frames 20 is provided with a second hydraulic rod 19 for transmission and support. The horizontal position of the transmission plate 14 can be adjusted by contracting the second hydraulic rod 19. The adjustment of the position can expose the air intake port 18 or close the air intake port 18. The two ends of the second hydraulic rod 19 are respectively welded and fixed to the inside of the second connecting frame 20 and the pressing block 9. In the process of the first hydraulic rod 2 extending and pushing the pressing block 9 to move downward, the second hydraulic rod 19 is extended to open the air intake port 18, and the foam gas is opened and discharged;

[0026] In this embodiment, a first hydraulic rod 2 is provided in the middle of the upper end of the pressing block 9, and a fan 8 is provided on one side of the first hydraulic rod 2, and the air suction port of the fan 8 is sealedly connected to the inside of the active cavity 13, and the gas in the shaping cavity 4 and the foam can be discharged through the active extraction of the fan 8. Figure 1 and Figure 2 As shown, the upper end of the first hydraulic rod 2 and the lower end of the housing 1 are welded and fixed by the first connecting frame 3. The first hydraulic rod 2 and the pressing block 9 can be suspended and fixed by the support of the first connecting frame 3. While supporting the pressing block 9, the first hydraulic rod 2 can push the pressing block 9 and complete the shaping of the foam;

[0027] In this embodiment, a liquid flow cavity 11 is arranged around the shaping cavity 4, and the liquid flow cavity 11 is embedded in the inner wall of the housing 1, and a heat sink 12 is arranged around the liquid flow cavity 11. Figure 2 As shown, the foam pressed by the pressing block 9 is high-temperature foam. After being pressed, the high-temperature foam will be closely attached to the inner wall of the housing 1, which will cause heat to be transferred to the outside. Liquid is reserved inside the liquid flow cavity 11, and the reserved liquid is used to achieve heat dissipation and cooling at the heat sink 12 and inside the device.

[0028] In this embodiment, the outer wall of the housing 1 is fixedly connected to a radiator 7 by bolts, and a pump 6 for extracting liquid is provided at the upper end of the radiator 7. Figure 1 As shown, a transmission pipe 5 is arranged around the upper end of the shaping cavity 4, and the housing 1, the transmission pipe 5, the pump 6 and the radiator 7 are sealed and connected in sequence. After being sealed and connected in sequence, the pump 6 can extract the liquid reserved in the liquid flow cavity 11 and realize the circulation of the liquid, so as to continuously cool down the inside of the device and the internal materials;

[0029] In this embodiment, the diameter of the air inlet 18 is smaller than the foam particles, and the foam particles will not flow out from the air inlet 18 .

[0030] Working principle: When the practical device is used and the foam is pressed and formed, the benzene and styrene raw materials are heated to expand them, and foam particles are formed after expansion. The foam particles are put into the shaping cavity 4 inside the shell 1, and the first hydraulic rod 2 is extended. The extension of the first hydraulic rod 2 can push the pressing block 9 to move toward the shaping cavity 4. During the movement, the second hydraulic rod 19 is extended to expose the air intake port 18. The pressing block 9 presses the foam to discharge gas, and the gas passes through the air intake port 18 and is discharged to realize the extrusion of the foam. At the same time, the fan 8 is started, and the fan 8 directly extracts the gas inside the foam through the air intake port 18. The extraction of gas realizes the pressing and shaping of the foam.

[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0032] Although the 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. A foam molding device for an electrical appliance packaging box, comprising a housing (1), wherein a molding cavity (4) is provided in a recessed manner inside the housing (1), characterized in that: A pressing block (9) for extrusion and shaping is arranged at the upper end of the outside of the shaping cavity (4); a sealing member (10) is arranged around the outside of the pressing block (9); a movable active cavity (13) is arranged inside the pressing block (9); a transmission plate (14) is arranged at the lower end of the inside of the movable cavity (13); a recessed cavity (15) is arranged in an array toward the lower end of the inside of the pressing block (9); and an air inlet (18) is arranged in an array inside the recessed cavity (15).

2. The foam forming device for an electrical appliance packaging box according to claim 1, characterized in that: The air inlet (18) penetrates and extends to both inner and outer ends of the pressing block (9), and the diameter of the air inlet (18) is smaller than that of the foam particles.

3. The foam forming device for an electrical appliance packaging box according to claim 2, characterized in that: The interior of the air intake port (18) is filled with a filling column (17), and the exterior of the filling column (17) is connected to an internal slot of the air intake port (18).

4. The device for forming foam for an electrical appliance packaging box according to claim 3, characterized in that: Second connecting frames (20) are arranged at the four corners of the upper end of the transmission plate (14); the lower end of the second connecting frame (20) is fixedly connected to the transmission plate (14) by bolts; one side of each of the four second connecting frames (20) is provided with a second hydraulic rod (19) for transmission and support; the two ends of the second hydraulic rod (19) are respectively welded and fixed to the inside of the second connecting frame (20) and the pressing block (9).

5. The device for forming foam for an electrical appliance packaging box according to claim 4, characterized in that: A first hydraulic rod (2) is arranged in the middle of the upper end of the pressing block (9), and a fan (8) is arranged on one side of the first hydraulic rod (2).

6. The foam forming device for an electrical appliance packaging box according to claim 5, characterized in that: The upper end of the first hydraulic rod (2) and the lower end of the housing (1) are fixed by welding via a first connecting frame (3).

Images