Foam box injection molding mold

Abstract

The utility model provides an injection molding mold for a foam box, belongs to the technical field of foam boxes, and solves the technical problems that the thickness of the foam box is not uniform and the quality of a product is influenced due to non-uniform particle distribution in the prior art. A foam box injection molding mold comprises an auxiliary frame and a pair of combined assembling molds connected to the auxiliary frame in a sliding mode, a driving assembly is arranged in the auxiliary frame to control the assembling molds to move, a pressing frame is perpendicularly fixed to one side of the auxiliary frame, a pressing plate is connected to the pressing frame in a sliding mode, and a regulating and controlling assembly for controlling the height of the pressing plate is arranged in the pressing frame. A pressing block is fixed to the bottom of the pressing plate, and a vibration assembly is arranged in the assembling mold. The foam box forming device has the advantages that a worker can conveniently collect a formed foam box, gaps between material bodies during pressing are reduced, the material bodies are evenly distributed, and the number of reserved bubbles is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of foam boxes and relates to an injection molding mold, in particular to a foam box injection molding mold. Background Art

[0002] A foam box is a box-type packaging container made of foam plastic. It is often used in the transportation of fruits and the packaging of items. Plastic foam is a plastic with many tiny pores inside. The raw material of the foam box is EPS (expandable polystyrene). The raw material is foamed into the required density (with steam); then the foamed raw material is loaded into the mold for heating and forming, cooled and molded, and the moisture is dried to complete the production of the foam box. The foam box forming mold is the main forming tool for the box body. The process is assisted by high temperature and high pressure. The mold is filled with 3-5 atmospheres to allow air to enter the interior of the granular raw material, and the seal is released instantly in a planned manner. Under the high-intensity air pressure, the EPS granular raw material suddenly foams and expands to form the appearance of an EPS insulation box.

[0003] After searching, it is found that a foam box forming mold is disclosed in Chinese patent documents [Application number: 202222510588.8; Publication number: CN 218256322 U]. A foam box forming mold includes a lower bracket, a lower mold body and a support plate. The upper mold body is fixed to the bottom end of the support plate. The support plate and the lower mold body are connected by a guide structure. The lower mold body is provided with a box cavity inside. A heating unit is provided inside the lower mold body below the box cavity. A cooling water jacket is installed on the outer peripheral surface of the lower mold body. A high-pressure steam inlet is installed on the outer wall of one side of the lower mold body. Both sides of the bottom of the lower mold body are slidably installed with a material removal column, and the bottom end of the material removal column extends to the outside of the lower bracket. The utility model uses two groups of material removal columns to form two demoulding points at the bottom of the foam box to complete the demoulding operation of the foam box. In this process, there is no need for the staff to manually deduct the workpiece, which effectively reduces the breakage rate of the workpiece, improves the yield rate of the foam box, and reduces the downtime gap of the mold, thereby improving the processing efficiency of the mold.

[0004] Although this patent does not require workers to manually pick up workpieces, if the particles are unevenly distributed when pouring them into the mold, it will easily lead to uneven thickness of the foam box, affecting the quality of the product. Utility Model Content

[0005] The purpose of the utility model is to solve the above-mentioned problems in the existing technology and propose a foam box injection molding mold. The technical problem to be solved by the utility model is: how to make it convenient for personnel to collect the molded foam boxes and reduce the gaps between the material bodies during pressing to make them evenly distributed and reduce the retention of bubbles.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A foam box injection molding mold comprises an auxiliary frame and a pair of assembled molds slidably connected to the auxiliary frame, wherein a driving component is arranged inside the auxiliary frame to control the movement of the assembled mold, a pressing frame is vertically fixed to one side of the auxiliary frame, a pressing plate is slidably connected to the pressing frame, a regulating component for controlling the height of the pressing plate is arranged inside the pressing frame, a pressing block is fixed to the bottom of the pressing plate, and a vibration component is arranged inside the assembly mold.

[0008] The working principle of the utility model is that the combination of the assembly mold can be controlled by the driving component, and the assembled assembly mold can perform foam box injection molding normally. After the foam box is formed, the assembly mold can be controlled to separate, so that personnel can collect the molded foam box conveniently. When the foam box is injected, the pressing block is pressed down by the regulating component so that the pressing block penetrates into the assembly mold to squeeze the material body. At the same time of squeezing, the heating unit in the pressing block is started to heat the material body. At the same time, the vibration component is started to drive the assembly mold to vibrate, thereby reducing the gap between the material bodies during pressing, making the material evenly distributed and reducing the retention of bubbles.

[0009] A cooling cavity is provided in the assembly mold, and a liquid infusion pipeline is arranged on the pressing plate. One end of the liquid infusion pipeline is divided into a plurality of branch pipelines connected to the cooling cavity, and the other end of the liquid infusion pipeline is connected to the output end of the coolant conveying device.

[0010] With the above structure, the coolant can be transported to the cooling chamber through the coolant delivery device through the delivery pipeline, which assists in rapid cooling of the assembly mold and accelerates the shaping of the foam box.

[0011] The driving assembly includes a driving motor fixed in the auxiliary frame and a bidirectional lead screw rotatably connected in the auxiliary frame. A transmission gear 1 is coaxially fixed on the output end of the driving motor, and a transmission gear 2 is coaxially fixedly connected to the bidirectional lead screw. The transmission gear 1 is meshed with the transmission gear 2. The two assembly molds are respectively threadedly connected to one end of the corresponding bidirectional lead screw.

[0012] By adopting the above structure, the driving motor can be used to drive the transmission gear 1 to rotate. After the transmission gear 1 rotates, it will engage with the transmission gear 2 to drive the transmission gear 2 to rotate. The transmission gear 2 then drives the bidirectional lead screw to rotate. The bidirectional lead screw is further connected to the corresponding assembly mold through a thread, thereby driving the assembly mold to move in relative or opposite directions.

[0013] The regulating component includes a driving screw vertically rotatably connected in the pressing frame and a regulating motor fixed in the auxiliary frame. The output end of the regulating motor is fixedly connected to the driving screw coaxially, and the driving screw is threadedly connected to the pressing plate.

[0014] With the above structure, the driving screw can be driven to rotate by adjusting the motor, and the driving screw is connected to the pressing plate through the thread, so as to drive the pressing plate to move up and down.

[0015] The vibration assembly comprises a motor fixed in the assembly mold and an eccentric wheel coaxially fixedly connected to the output end of the motor.

[0016] By adopting the above structure, the eccentric wheel can be driven by the motor to rotate, generating centrifugal force, causing the assembly mold to vibrate as a whole, reducing the gap between the materials during pressing, and reducing the retention of bubbles. In addition, since the assembly mold needs to be heated and cooled quickly, the temperature changes frequently. In order to prevent the motor from malfunctioning due to this reason, the motor is fixed in the extended part of the bidirectional lead screw threaded to the assembly mold.

[0017] Compared with the prior art, this foam box forming mold has the following advantages:

[0018] 1. The combination of the assembly mold is controlled by the driving component. The assembled assembly mold can perform foam box injection molding normally. When the foam box is formed, the assembly mold can be controlled to separate, which is convenient for personnel to collect the molded foam box when performing foam box injection molding.

[0019] 2. The motor drives the eccentric wheel to rotate, generating centrifugal force, causing the assembled mold to vibrate as a whole, reducing the gap between the materials during pressing, making them evenly distributed and reducing the retention of bubbles.

[0020] 3. The coolant is transported to the cooling chamber through the coolant delivery device through the infusion pipeline to assist the assembly mold to cool down quickly and accelerate the shaping of the foam box. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the utility model.

[0022] Figure 2 It is a structural schematic diagram of the control component in the utility model.

[0023] Figure 3 It is a structural schematic diagram of the driving component in the utility model.

[0024] Figure 4 It is a schematic diagram of the structure inside the assembly mold in the utility model.

[0025] In the figure, 1. auxiliary frame; 2. assembly mold; 3. driving component; 4. pressing frame; 5. pressing plate; 6. regulating component; 7. pressing block; 8. cooling chamber; 9. infusion pipeline; 10. driving motor; 11. bidirectional screw; 12. transmission gear 1; 13. transmission gear 2; 14. driving screw; 15. regulating motor; 16. vibration component; 17. motor; 18. centrifugal wheel. DETAILED DESCRIPTION

[0026] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0027] like Figure 1-Figure 4 As shown, a foam box injection molding mold includes an auxiliary frame 1, a pair of combined assembly molds 2 slidably connected to the auxiliary frame 1, a driving component 3 is arranged in the auxiliary frame 1 to control the movement of the assembly mold 2, a pressing frame 4 is vertically fixed to one side of the auxiliary frame 1, a pressing plate 5 is slidably connected to the pressing frame 4, a regulating component 6 for controlling the height of the pressing plate 5 is arranged in the pressing frame 4, a pressing block 7 is fixed to the bottom of the pressing plate 5, and a vibration component 16 is arranged in the assembly mold 2.

[0028] The combination of the assembly mold 2 can be controlled by the driving component 3, and the assembled assembly mold 2 can perform foam box injection molding normally. When the foam box is formed, the assembly mold 2 can be controlled to separate, which is convenient for personnel to collect the molded foam box. When the foam box is injected, the pressing block 7 is pressed down by the regulating component 6 so that the pressing block 7 penetrates into the assembly mold 2 to squeeze the material body. At the same time, the heating unit in the pressing block 7 is started to heat the material body. The vibration component 16 is started at the same time to drive the assembly mold 2 to vibrate, thereby reducing the gap between the material bodies during pressing, making them evenly distributed and reducing the retention of bubbles.

[0029] A cooling cavity 8 is provided in the assembly mold 2, and a liquid infusion pipeline 9 is provided on the pressing plate 5. One end of the liquid infusion pipeline 9 is divided into multiple branch pipelines connected to the cooling cavity 8, and the other end of the liquid infusion pipeline 9 is connected to the output end of the coolant delivery device.

[0030] With the above structure, the coolant can be delivered to the cooling chamber 8 through the coolant delivery device via the delivery pipe 9, thereby assisting the assembly mold 2 to cool down quickly and accelerating the shaping of the foam box.

[0031] The driving component 3 includes a driving motor 10 fixed in the auxiliary frame 1 and a bidirectional lead screw 11 rotatably connected in the auxiliary frame 1. A transmission gear 12 is coaxially fixed on the output end of the driving motor 10, and a transmission gear 2 13 is coaxially fixed on the bidirectional lead screw 11. The transmission gear 12 is meshed with the transmission gear 2 13. The two assembly molds 2 are respectively threadedly connected to one end of the corresponding bidirectional lead screw 11.

[0032] By adopting the above structure, the driving motor 10 can be used to drive the transmission gear 12 to rotate. After the transmission gear 12 rotates, it will engage with the transmission gear 2 13 to drive the transmission gear 2 13 to rotate. The transmission gear 2 13 then drives the bidirectional lead screw 11 to rotate. The bidirectional lead screw 11 is further connected to the corresponding assembly mold 2 through a thread, thereby driving the assembly mold 2 to move in relative or opposite directions.

[0033] The regulating assembly 6 includes a driving screw 14 vertically rotatably connected to the pressing frame 4 and a regulating motor 15 fixed in the auxiliary frame 1. The output end of the regulating motor 15 is coaxially fixedly connected to the driving screw 14, and the driving screw 14 is threadedly connected to the pressing plate 5.

[0034] With the above structure, the driving screw 14 can be driven to rotate by adjusting the motor 15, and the driving screw 14 is connected to the pressing plate 5 through threads, thereby driving the pressing plate 5 to move up and down.

[0035] The vibration assembly 16 includes a motor 17 fixed in the assembly mold 2 and an eccentric wheel 18 coaxially fixedly connected to the output end of the motor.

[0036] By adopting the above structure, the eccentric wheel 18 can be driven to rotate by the motor 17 to generate centrifugal force, so that the assembly mold 2 vibrates as a whole, reducing the gap between the material bodies during pressing and reducing the retention of bubbles. In addition, since the assembly mold 2 needs to be heated and cooled quickly, the temperature changes frequently. In order to prevent the motor 17 from malfunctioning due to this reason, the motor 17 is fixed in the extended part of the assembly mold 2 threadedly connected to the bidirectional screw 11.

[0037] The working principle of the utility model is as follows: the driving motor 10 drives the transmission gear 12 to rotate, and after the transmission gear 12 rotates, it will mesh with the transmission gear 2 13 to drive the transmission gear 2 13 to rotate, and the transmission gear 2 13 then drives the bidirectional lead screw 11 to rotate, and the bidirectional lead screw 11 is further connected with the corresponding assembly mold 2 through a thread, so as to drive the assembly mold 2 to move relative to each other, and the assembly mold 2 is combined. The assembled assembly mold 2 can be normally used for foam box injection molding. When the foam box injection molding is performed, the driving lead screw 14 is driven by the regulating motor 15 The pressing plate 5 is driven to move up and down through the threaded connection of the lead screw 14 with the pressing plate 5, so that the pressing block 7 penetrates into the assembly mold 2 to extrude the material body. The heating unit in the pressing block 7 is started at the same time to heat the material body. The eccentric wheel is driven by the motor to rotate to generate centrifugal force, so that the assembly mold 2 vibrates as a whole, thereby reducing the gap between the material bodies during pressing and reducing the retention of bubbles. After the pressing is completed, the coolant is conveyed to the cooling chamber 8 through the infusion pipe 9 by the coolant conveying equipment, so as to assist the assembly mold 2 to cool down quickly and accelerate the shaping of the foam box.

[0038] In summary, the combination of the assembly mold 2 is controlled by the driving component 3, and the assembled assembly mold 2 can perform foam box injection molding normally. After the foam box is formed, the assembly mold 2 can be controlled to separate, which is convenient for personnel to collect the molded foam box. When the foam box is injected, the pressing block 7 is pressed down by the regulating component 6, so that the pressing block 7 penetrates into the assembly mold 2 to squeeze the material body. At the same time, the heating unit in the pressing block 7 is started to heat the material body. The vibration component 16 is started at the same time to drive the assembly mold 2 to vibrate, thereby reducing the gap between the material bodies during pressing and reducing the retention of bubbles.

[0039] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A foam box injection molding mold, comprising an auxiliary frame (1), and a pair of assembled molds (2) slidably connected to the auxiliary frame (1), characterized in that: The auxiliary frame (1) is provided with a driving component (3) for controlling the movement of the assembly mold (2); a pressing frame (4) is vertically fixed on one side of the auxiliary frame (1); a pressing plate (5) is slidably connected to the pressing frame (4); a regulating component (6) for controlling the height of the pressing plate (5) is provided in the pressing frame (4); a pressing block (7) is fixed at the bottom of the pressing plate (5); a heating unit is built into the pressing block (7); and a vibration component (16) is provided in the assembly mold (2).

2. A foam box injection molding mold according to claim 1, characterized in that: A cooling cavity (8) is provided in the assembly mold (2), and a liquid infusion pipeline (9) is provided on the pressing plate (5). One end of the liquid infusion pipeline (9) is divided into a plurality of branch pipelines connected to the cooling cavity (8), and the other end of the liquid infusion pipeline (9) is connected to the output end of the coolant delivery device.

3. The foam box injection molding mold according to claim 1, characterized in that: The driving assembly (3) comprises a driving motor (10) fixed in the auxiliary frame (1), and a bidirectional lead screw (11) rotatably connected in the auxiliary frame (1); a transmission gear 1 (12) is coaxially fixed on the output end of the driving motor (10); a transmission gear 2 (13) is coaxially fixed on the bidirectional lead screw (11); the transmission gear 1 (12) is meshed with the transmission gear 2 (13); and the two assembly molds (2) are respectively threadedly connected to one end of the corresponding bidirectional lead screw (11).

4. The foam box injection molding mold according to claim 1, characterized in that: The regulating assembly (6) comprises a driving screw (14) vertically rotatably connected to the pressing frame (4), and a regulating motor (15) fixed in the auxiliary frame (1); the output end of the regulating motor (15) is coaxially fixedly connected to the driving screw (14), and the driving screw (14) is threadedly connected to the pressing plate (5).

5. The foam box injection molding mold according to claim 1, characterized in that: The vibration assembly (16) comprises a motor (17) fixed in the assembly mold (2) and an eccentric wheel (18) coaxially fixedly connected to the output end of the motor (17).

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