Injection molding device for plastic coaming box

Abstract

The invention relates to the technical field of plastic coaming box injection molding, in particular to a plastic coaming box injection molding device which comprises a bottom frame, a spiral conveyor is arranged on the upper side of the bottom frame, a heating feeding barrel is arranged at a feeding port of the spiral conveyor, and a fixed mold assembly is fixedly arranged at the position, corresponding to the threaded conveyor, of the upper side of the bottom frame. By arranging the fixed mold assembly, the movable mold assembly and the auxiliary assembly, it can be guaranteed that injection molding raw materials are completely molten into the forming cavity through heating operation before injection molding and during injection molding of the coaming box, the injection molding effect and quality are guaranteed, bubbles cannot be generated inside, and the peripheral sealing performance of the forming cavity can be guaranteed during injection molding; in addition, cooling switching can be carried out after injection molding, so that injection molding cooling molding is faster, waste heat cooling operation can still be carried out during material taking, the injection molding effect of the coaming box is guaranteed, the manufacturing structure of the equipment is not complex, and the manufacturing cost of the equipment is not high.

Description

Technical Field

[0001] The present invention relates to the technical field of plastic pallet box injection molding, and particularly to a plastic pallet box injection molding device. Background Art

[0002] An injection molding machine is a conventional plastic molding device at present. It is equipped with a moving mold and a fixed mold. After the moving mold and the fixed mold are buckled, a molding cavity is formed. Then, through an injection mechanism, injection raw materials are injected into the molding cavity. The residual air in the molding cavity is discharged outwards through a pressure relief hole. When the injection raw materials are filled in the molding cavity, the moving mold and the fixed mold are cooled. The cooled injection raw materials form a pallet box with the same shape as the molding cavity. However, there are still the following problems in current use:

[0003] 1. When the existing fixed mold and moving mold are used in cooperation for a long time, they will cause certain wear and offset, resulting in poor sealing effect of the sealing cavity and leakage of injection raw materials;

[0004] 2. Before injection, the injection raw materials are supplied by a screw conveyor with a heating component. During the conveying process, the temperature of the injection raw materials will drop slightly, resulting in the phenomenon of air bubbles and agglomeration inside during injection, affecting the quality of the injection products. In addition, the material conveying speed inside the screw conveyor is certain, and the materials inside the screw conveyor cannot be quickly supplied effectively according to the specifications of the injection products, affecting the injection molding efficiency;

[0005] 3. After injection, it is necessary to wait for the products to cool down, which affects the production efficiency. Or through an additional cooling module, but the raw materials at the injection port are still in a molten state during material taking, resulting in wire drawing during material taking and affecting subsequent injection use. Therefore, we propose a plastic pallet box injection molding device. Summary of the Invention

[0006] In order to overcome the above technical problems existing in the prior art, the present invention provides a plastic pallet box injection molding device.

[0007] To solve the above technical problems, the present invention provides the following technical solutions: It includes a chassis. A screw conveyor is arranged on the upper side of the chassis. A heating feeding barrel is arranged at the feeding port of the screw conveyor. A fixed mold assembly is fixedly arranged on the upper side of the chassis corresponding to the position of the screw conveyor. A moving mold assembly is movably arranged on the upper side of the chassis corresponding to the position of the fixed mold assembly. A constraint rod is arranged between the fixed mold assembly and the moving mold assembly. An electric push rod is fixedly installed on the side surface of the rectangular plate of the constraint rod. An auxiliary assembly is arranged on the upper side of the fixed mold assembly.

[0008] The fixed mold assembly includes a mold plate. A molding cavity and a mating cavity are formed on the side surface of the mold plate. Inside the mold plate, a diversion cavity, a first connection groove, a wind guide cavity, a second connection groove, an air outlet groove and a mating cavity are respectively formed. The structures inside the above-mentioned moving mold assembly are exactly the same as those of the fixed mold assembly, except that;

[0009] A first sealing plate is movably installed inside the mating cavity included in the fixed mold assembly. Installation blocks, mating rods and support cylinders are arranged inside the first connection groove and the second connection groove. A discharge pipe and a second temperature guide plate are arranged inside the mold plate;

[0010] A second sealing plate is movably installed inside the mating cavity included in the moving mold assembly. Trigger rods are arranged inside the first connection groove and the second connection groove;

[0011] The auxiliary assembly includes an installation body. An adjustment block is arranged inside the installation body. A fan module and a liquid supply pump module are arranged on the side surface of the installation body.

[0012] Further, the mold plate is fixedly installed above the screw conveyor. The mold plate structure of the moving mold assembly, which is the same, is movably arranged above the screw conveyor. The diversion cavity is formed inside the mold plate corresponding to the molding cavity position. The wind guide cavity is formed inside the mold plate corresponding to the diversion cavity position. The first temperature guide plate is arranged on the wall surface of the diversion cavity and penetrates through the mold plate to the inside of the wind guide cavity. The first connection groove is formed on the wall surface of the diversion cavity. The second connection groove is formed on the wall surface of the wind guide cavity corresponding to the first connection groove position. The air outlet groove is formed on the side surface of the mold plate corresponding to the wind guide cavity position. The mating cavity is formed on the side surface of the mold plate. A communication cavity is formed on the wall surface of the mating cavity.

[0013] Further, the first sealing plate is closely attached to the wall surface of the mating cavity. A pressure relief valve is fixedly installed inside the communication cavity. The installation blocks are fixedly installed on the inner walls of the first connection groove and the second connection groove. The mating rods are movably installed at the central positions of the installation blocks. The support cylinders are fixedly connected between the sides of the mating rods and the installation blocks and are movably sleeved on the side surfaces of the mating rods.

[0014] Further, the second sealing plate is closely attached to the wall surface of the mating cavity. The trigger rods are fixedly installed on the inner walls of the first connection groove and the second connection groove. Support springs are equidistantly fixedly installed on the side surfaces of the first sealing plate and the second sealing plate, and the other ends of the support springs are respectively fixedly connected to the corresponding wall surface positions of the mating cavity.

[0015] Further, a connection cavity is formed at the central position on the side surface of the mold plate included in the fixed mold assembly. The discharge pipe is fixedly installed inside the connection cavity. The second temperature guide plate is fixedly sleeved on the side surface of the discharge pipe by threads. An outer sleeve is fixedly sleeved on the side surface of the discharge pipe. A mating groove is formed inside the outer sleeve.

[0016] Further, the installation body is fixedly installed on the upper side of the fixed mold assembly. An inner cavity is provided on the upper side of the installation body. First slots are mirror - opened on the wall surface of the inner cavity. Second slots are provided at the positions between the first slots on the wall surface of the inner cavity. The adjusting block is movably installed inside the inner cavity. An adjusting groove is opened on the side surface of the adjusting block. A motor is fixedly installed on the side surface of the adjusting block.

[0017] Further, the blower module is fixedly installed on the upper side of the mold plate. A first air pipe is fixedly connected to the air outlet of the blower module and penetrates into the first slot. A second air pipe is fixedly penetrated through the side surface of the installation body and penetrates through the mold plate into the air guiding cavity. A third air pipe is fixedly penetrated through the side surface of the installation body, and the other ends of the third air pipe are respectively communicated to the outside of the screw conveyor and the feeding port of the screw conveyor. A one - way valve is arranged at the position corresponding to the feeding port of the screw conveyor on the side surface of the third air pipe.

[0018] Further, the liquid supply pump module is fixedly installed on the upper side of the mold plate. A first liquid pipe is fixedly connected to the water outlet of the liquid supply pump module and penetrates into the first slot. A second liquid pipe is fixedly penetrated through the side surface of the installation body and penetrates through the mold plate into the diversion cavity. A third liquid pipe is fixedly penetrated through the side surface of the installation body and penetrates through the mold plate into the fitting cavity. A fourth liquid pipe is fixedly connected to the water inlet of the liquid supply pump module and penetrates through the mold plate into the diversion cavity.

[0019] Compared with the prior art, the beneficial effects that the present invention can achieve are as follows:

[0020] 1. By setting the fixed mold assembly, the moving mold assembly and the auxiliary assembly, the present invention can ensure that the injection - molding raw materials are completely melted into the forming cavity during the heating operation before and during the injection - molding of the enclosure box, ensuring the injection - molding effect and quality. No bubbles will be generated inside. Moreover, during the injection - molding, the sealing performance around the forming cavity can be ensured, avoiding poor sealing caused by long - term wear of the mold and leakage of materials. In addition, after the injection - molding, cooling can be switched, enabling the injection - molding to cool and form faster. And during the material taking, the residual heat can still be used for temperature reduction operation, ensuring the injection - molding effect of the enclosure box. The manufacturing structure of the equipment is not complex, and the manufacturing cost of the equipment is not high.

[0021] 2. By setting the fitting cavity and its surrounding components, the sealing around the forming cavity is realized through the cooperation and clamping of the first sealing plate and the second sealing plate. Elastic clamping is achieved through the support spring. Subsequently, the clamping force between the first sealing plate and the second sealing plate can be strengthened through water pressure, avoiding the loss of sealing performance caused by wear. In addition, the provided communication cavity can make the water inside the fitting cavity not flow when the water pressure is low and be completely connected when the water pressure is high. When the subsequent water circulates, the water inside the fitting cavity included in the fixed mold assembly does not flow but can still squeeze the first sealing plate, ensuring the sealing effect of the first sealing plate and the second sealing plate.

[0022] 3. By providing the mounting block and its peripheral components, when the mold plates included in the moving mold assembly and the fixed mold assembly are combined, the trigger rod triggers the extrusion fitting rod, which can connect the corresponding first connection groove with the air guide cavity of the fixed mold assembly, enabling the water flow and air flow to flow inside the two sets of mold plates for heating and cooling operations. Additionally, when the mold plates included in the moving mold assembly and the fixed mold assembly are separated, the fitting rod resets to close the diversion cavity and the air guide cavity included in the fixed mold assembly, allowing continuous cooling and heating operations to be carried out.

[0023] 4. By providing the connection cavity and its peripheral components, the mating groove can introduce hot air and cold air into the outer cover cylinder, and temperature conduction is carried out through the discharge pipe and the second temperature guide plate. When it is hot air, it can assist in heating the injection molding raw material output by the screw conveyor to keep it completely melted. When it is cold air, it can cool the injection molding raw material to slightly agglomerate, so that when taking the injection molded enclosure box, the injection molding raw material at the discharge pipe can be directly disconnected without generating a drawing phenomenon.

[0024] 5. By providing the adjustment block and its peripheral components, the motor drives the adjustment block to rotate to different positions, connecting the corresponding first slotted opening and the second slotted opening in different states, thereby adapting to subsequent different air flow and water flow guiding operations to meet the use of multi-state effects.

[0025] 6. By providing the third air pipe and the one-way valve, the hot air can be guided to the side of the screw conveyor through the third air pipe to assist in melting the injection molding raw material, and the hot air can be guided to the feeding place of the screw conveyor for further heating. Moreover, the air flow can accelerate the conveying efficiency of the injection molding raw material, quickly conveying the material inside the screw conveyor to the molding cavity position. The one-way valve can ensure that the injection molding raw material does not flow into the third air pipe.

[0026] 7. By providing the fan module and the liquid supply pump module, the fan module can supply hot air and cold air, cooperate with other components to switch operations such as injection molding heating and cooling, and the liquid supply pump module can carry out water circulation and water centralized collection, and can also adjust the water pressure. At this time, in cooperation with the switching of injection molding heating and cooling operations, the quality of the enclosure box injection molded by this molding device is the best, improving the product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is the overall structural schematic diagram of the present invention;

[0028] Figure 2 is the partial cross-sectional structural schematic diagram of the present invention;

[0029] Figure 3 is the cross-sectional structural schematic diagram of the fixed mold assembly of the present invention;

[0030] Figure 4 is the present invention Figure 2Schematic diagram of the enlarged structure at location A;

[0031] Figure 5 This is for the present invention Figure 3 Schematic diagram of the enlarged structure at location B;

[0032] Figure 6 Schematic diagram of the partial sectional structure of the mold plate of the present invention;

[0033] Figure 7 Schematic diagram of the partial structure of the fixed mold assembly of the present invention;

[0034] Figure 8 Exploded schematic diagram of the peripheral structure of the discharge pipe of the present invention;

[0035] Figure 9 Schematic diagram of the structure of the auxiliary component of the present invention;

[0036] Figure 10 Schematic diagram of the partial sectional structure of the auxiliary component of the present invention;

[0037] Figure 11 Schematic diagram of the water flow and air flow directions at different positions of the auxiliary component of the present invention.

[0038] Wherein: 1, chassis; 11, screw conveyor; 12, heating and feeding barrel; 13, restraint rod; 14, electric push rod; 2, fixed mold assembly; 21, mold plate; 211, molding cavity; 22, diversion cavity; 221, first temperature guiding plate; 222, first connecting groove; 23, air guiding cavity; 231, second connecting groove; 232, air outlet groove; 24, fitting cavity; 241, communicating cavity; 242, pressure relief valve; 243, first sealing plate; 244, second sealing plate; 245, support spring; 25, mounting block; 251, fitting rod; 252, support cylinder; 253, trigger rod; 26, connecting cavity; 261, discharge pipe; 262, second temperature guiding plate; 263, outer cover cylinder; 264, fitting groove; 3, moving mold assembly; 4, auxiliary component; 41, mounting body; 411, first slot; 412, second slot; 42, inner cavity; 421, adjusting block; 422, adjusting groove; 423, motor; 43, fan module;

[0039] 431, first air pipe; 432, second air pipe; 433, third air pipe; 434, one-way valve;

[0040] 44, liquid supply pump module; 441, first liquid pipe; 442, second liquid pipe; 443, third liquid pipe; 444, fourth liquid pipe. Detailed implementation manner

[0041] In order to make the technical means, creative features, achieved purposes and effects realized by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments. However, the following embodiments are only the preferred embodiments of the present invention, not all of them. Based on the embodiments in the implementation manners, other embodiments obtained by those skilled in the art without creative efforts all belong to the protection scope of the present invention. The experimental methods in the following embodiments are all conventional methods unless otherwise specified. The materials, reagents, etc. used in the following embodiments can all be obtained from commercial channels unless otherwise specified.

[0042] Embodiment: As Figure 1 and Figure 2 shown, an injection molding device for a plastic pallet box includes a chassis 1. The chassis 1 is a rectangular plate. A screw conveyor 11 is arranged on the upper side of the chassis 1. A heating and feeding barrel 12 is arranged at the feeding port of the screw conveyor 11. The heating and feeding barrel 12 is a material round barrel with an internal heating function. The injection molding raw material enters the inside of the heating and feeding barrel 12 and melts and then enters the inside of the screw conveyor 11. It is conveyed to the mold through the screw conveyor 11. A fixed mold assembly 2 is fixedly arranged on the upper side of the chassis 1 corresponding to the position of the screw conveyor 11. A movable mold assembly 3 is movably arranged on the upper side of the chassis 1 corresponding to the position of the fixed mold assembly 2. A constraint rod 13 for restricting the path is arranged between the fixed mold assembly 2 and the movable mold assembly 3. The constraint rod 13 is composed of a cylindrical rod and a rectangular plate. An electric push rod 14 is fixedly installed on the side surface of the rectangular plate of the constraint rod 13, and the output end of the electric push rod 14 is fixedly installed on the side surface of the movable mold assembly 3. The electric push rod 14 can push the movable mold assembly 3 to move and cooperate with the fixed mold assembly 2 to form a mold for the injection molding operation of the pallet box. An auxiliary assembly 4 that can utilize liquid flow and air flow in multiple states is arranged on the upper side of the fixed mold assembly 2;

[0043] The fixed mold assembly 2 and the movable mold assembly 3 can be cooperatively formed into a mold, and the sealing performance of itself can be ensured when the mold is formed. It can assist in heating the material during injection molding and assist in heat dissipation after injection molding, which is convenient for demolding;

[0044] As Figures 2 to 8As shown in the figure, the fixed mold assembly 2 includes a mold plate 21 fixedly installed on the upper side of the screw conveyor 11 (wherein a mold plate 21 with the same structure as the moving mold assembly 3 is movably arranged on the upper side of the screw conveyor 11). A molding cavity 211 is formed on the side surface of the mold plate 21, which can be opened in different shapes according to requirements. A diversion cavity 22 is formed inside the mold plate 21 corresponding to the position of the molding cavity 211. The diversion cavity 22 is a grid cavity with an "L"-shaped cross-section, which can perform multi-component diversion operation on water flow. A wind guide cavity 23 is formed inside the mold plate 21 corresponding to the position of the diversion cavity 22. The wind guide cavity 23 is a return cavity with an "L"-shaped cross-section. First heat conduction plates 221 are equidistantly arranged on the wall surface of the diversion cavity 22, and the first heat conduction plates 221 penetrate through the mold plate 21 into the interior of the wind guide cavity 23. The first heat conduction plates 221 are rectangular plates made of heat-conducting material. First connection grooves 222 penetrating through the mold plate 21 are equidistantly formed on the wall surface of the diversion cavity 22. Second connection grooves 231 penetrating through the mold plate 21 are equidistantly formed on the wall surface of the wind guide cavity 23 corresponding to the positions of the first connection grooves 222. The first connection grooves 222 and the second connection grooves 231 are cylindrical grooves. Air outlet grooves 232 penetrating through the mold plate 21 to its interior are equidistantly formed on the side surface of the mold plate 21 corresponding to the position of the wind guide cavity 23. The air outlet grooves 232 are cylindrical grooves. A fitting cavity 24 is formed on the side surface of the mold plate 21 corresponding to the molding cavity 211. The fitting cavity 24 is a return-shaped groove. Communication cavities 241 penetrating through the mold plate 21 into the interior of the first connection grooves 222 are equidistantly formed on the wall surface of the fitting cavity 24. The communication cavities 241 are circular cavities; specifically, water flow is guided and transported through the interior of the diversion cavity 22 and the fitting cavity 24, air flow is guided and transported through the interior of the wind guide cavity 23, and corresponding water flow and air flow are guided through other formed grooves

[0045] The internal structure of the above-mentioned moving mold assembly 3 is exactly the same as that of the fixed mold assembly 2. The difference is:

[0046] The fixed mold assembly 2 includes a mating cavity 24, inside which a first sealing plate 243 is movably installed and the first sealing plate 243 closely fits against the wall surface of the mating cavity 24. The first sealing plate 243 is a U-shaped return plate in cross-section. A pressure relief valve 242 is fixedly installed inside the communication cavity 241. The pressure relief valve 242 is a valve that can be set to open when the numerical value reaches a fixed pressure. Installation blocks 25 are fixedly installed on the inner walls of the first connection groove 222 and the second connection groove 231. The installation blocks 25 are circular blocks with fan-shaped grooves equidistantly arranged on the side. A mating rod 251 is movably installed at the central position of the installation block 25, and one side of the mating rod 251 fits against the side surface of the installation block 25. The mating rod 251 is a cylindrical rod with an I-shaped cross-section. A support cylinder 252 is fixedly connected between the side surface of the mating rod 251 and the side surface of the installation block 25, and the support cylinder 252 is movably sleeved on the side surface of the mating rod 251. The support cylinder 252 is a corrugated cylinder made of an elastic material; the moving mold assembly 3 includes a mating cavity 24, inside which a second sealing plate 244 is movably installed and the second sealing plate 244 closely fits against the wall surface of the mating cavity 24. The mating cavity 24 is a return plate with a convex-shaped cross-section. Trigger rods 253 are fixedly installed on the inner walls of the first connection groove 222 and the second connection groove 231. The trigger rods 253 are "T"-shaped round rods with fan-shaped grooves equidistantly arranged on the side. Support springs 245 are fixedly installed equidistantly on the side surfaces of the first sealing plate 243 and the second sealing plate 244, and the other ends of the support springs 245 are respectively fixedly connected to the corresponding wall surfaces of the mating cavity 24; specifically, the pressure relief valve 242 can perform a blocking operation on the water flow inside the mating cavity 24 at a certain pressure. When the water pressure is greater than a certain value, the water flow flows out from inside the communication cavity 241 and circulates through the mating cavity 24 provided inside the overall mold composed of the mold plates 21 included in the fixed mold assembly 2 and the moving mold assembly 3. Through the water pressure, the first sealing plate 243 and the second sealing plate 244 are clamped more tightly, ensuring the sealing performance between them. The trigger rod 253 squeezes the mating rod 251 to deform the support cylinder 252. At this time, the corresponding first connection groove 222 and the second connection groove 231 are communicated with each other, completing the water flow and air flow communication and flow use of the fixed mold and the moving mold;

[0047] The fixed mold assembly 2 includes a connecting cavity 26 opened at the central position on the side of the mold plate 21, which penetrates through it. The connecting cavity 26 corresponds to and communicates with the discharge port of the screw conveyor 11 and the molding cavity 211. An outlet pipe 261 is fixedly installed inside the connecting cavity 26. A second heat conduction plate 262 is fixedly sleeved on the side of the outlet pipe 261 by threads. The outlet pipe 261 and the second heat conduction plate 262 are made of heat-conducting materials. An outer sleeve 263 is fixedly sleeved on the side of the outlet pipe 261, and the outer sleeve 263 is attached to the wall surface of the connecting cavity 26. The outer sleeve 263 is a hollow cylinder on the inside. At equal intervals on the inside of the outer sleeve 263, there are mating grooves 264 that penetrate through it and the mold plate 21 to the inside of the air guide cavity 23. The mating grooves 264 are circular grooves; specifically, through the mating grooves 264, the air flow inside the air guide cavity 23 can be guided to the sides of the outlet pipe 261 and the second heat conduction plate 262, so as to strengthen the melting effect of the injection molding raw materials when it is hot air, and slightly shape the injection molding raw materials when it is cold air, so that there will be no wire drawing phenomenon at the outlet when taking the enclosed pallet box after injection molding;

[0048] The auxiliary assembly 4 can supply water and gas to the inside of the fixed mold assembly 2 and the moving mold assembly 3, seal through liquid, and perform heating and cooling operations through gas, so that the injection molding effect is better and the material can be easily removed after injection molding;

[0049] Such as Figure 1 、 Figure 2 and Figure 9 、 Figure 10 As shown in Figure 11 、

[0050] A blower module 43 is fixedly installed on the upper side of the mold plate 21 corresponding to the position of the first group of mounting bodies 41. The blower module 43 is a blower with an integrated heating wire and a refrigeration compressor inside, which can blow hot air and cold air for use. A first air pipe 431 is fixedly connected to the air outlet of the blower module 43 and the first air pipe 431 penetrates into the first slot 411. On the side of the mounting body 41, second air pipes 432 are symmetrically penetrated and fixed corresponding to the positions of the other group of first slots 411, and the second air pipes 432 penetrate through the mold plate 21 into the air guide cavity 23. The first air pipe 431 and the second air pipes 432 are circular pipes. A third air pipe 433 is penetrated and fixed on the side of the mounting body 41 corresponding to the second slot 412, and the other ends of the third air pipe 433 are respectively communicated to the outside of the screw conveyor 11 and the feeding port of the screw conveyor 11. The third air pipe 433 is a multi-branch circular pipe. A one-way valve 434 is arranged on the side of the third air pipe 433 corresponding to the feeding port of the screw conveyor 11. A liquid supply pump module 44 is fixedly installed on the upper side of the mold plate 21 corresponding to the position of the second group of mounting bodies 41. The liquid supply pump module 44 is composed of a water pump, a water supply tank, a support pump, etc., which can be used for circulating water supply and centralized water storage and can adjust the water pressure. A first liquid pipe 441 is fixedly connected to the water outlet of the liquid supply pump module 44 and the first liquid pipe 441 penetrates into the first slot 411. On the side of the mounting body 41, a second liquid pipe 442 is penetrated and fixed corresponding to the position of the other first slot 411 on the other side, and the second liquid pipe 442 penetrates through the mold plate 21 into the diversion cavity 22. A third liquid pipe 443 is penetrated and fixed on the side of the mounting body 41 corresponding to the second slot 412, and the third liquid pipe 443 penetrates through the mold plate 21 into the fitting cavity 24. A fourth liquid pipe 444 is fixedly connected to the water inlet of the liquid supply pump module 44 and the fourth liquid pipe 444 penetrates through the mold plate 21 into the diversion cavity 22. The first liquid pipe 441, the second liquid pipe 442, the third liquid pipe 443 and the fourth liquid pipe 444 are circular pipes; specifically, hot air and cold air are supplied through the blower module 43. The regulating block 421 is driven by the motor 423 to rotate to make the air flow to the corresponding position. The air flow can enter the air guide cavity 23, or the air flow can enter the side and the feeding port of the screw conveyor 11. When the air flow enters the side of the screw conveyor 11, it can assist in maintaining the molten state during the injection molding raw material transportation. When the air flow enters the feeding port of the screw conveyor 11, it can accelerate the material transportation speed and improve the injection molding efficiency; the water supply operation can be carried out through the arranged liquid supply pump module 44. Similarly, the regulating block 421 rotates to make the water flow to the corresponding position. The water flow can enter the fitting cavity 24 to make the first sealing plate 243 and the second sealing plate 244 inside fit more tightly, or the water flow can enter the diversion cavity 22. When the water flow remains stationary, heat conduction can be carried out through the water. When the water flow is flowing, accelerated heat dissipation operation can be carried out through the water.

[0051] Working principle:

[0052] Before injection molding: The moving mold assembly 3 is pushed by the electric push rod 14 to approach the fixed mold assembly 2 to form a mold. At this time, the trigger rod 253 presses against the side of the mating rod 251, causing the mating rod 251 to press and deform the support cylinder 252 so that it detaches from the side of the mounting block 25. The first connecting groove 222 and the second connecting groove 231 included in the moving mold assembly 3 and the fixed mold assembly 2 correspond to each other for connection operation;

[0053] During injection molding: The blower module 43 supplies hot air. Correspondingly, the motor 423 drives the adjusting block 421 to rotate to the first position. At this time, the hot air is discharged from the third air pipe 433 to the side position of the screw conveyor 11 to heat the injection molding raw material and keep it in a molten state. Discharged to the feeding place of the screw conveyor 11 can accelerate the conveying speed of the injection molding raw material inside the screw conveyor and can also assist in heating it. The hot air is discharged from the second air pipe 432 into the air guide cavity 23. Among them, it enters the outer cover cylinder 263 through the mating groove 264 to heat the second temperature guide plate 262 and the discharge pipe 261, further assisting in heating and melting the injection molding raw material;

[0054] The liquid supply pump module 44 supplies water. Correspondingly, the adjusting block 421 rotates to the first position. The water enters the diversion cavity 22 and the mating cavity 24 through the second liquid pipe 442 and the third liquid pipe 443. When the first sealing plate 243 and the second sealing plate 244 are pushed by the water pressure during clamping, making their clamping more tight and avoiding the situation of insufficient sealing after the first sealing plate 243 and the second sealing plate 244 are worn. At this time, no water circulation is carried out, and the water fills the diversion cavity 22 and the mating cavity 24. The first temperature guide plate 221 absorbs the heat of the hot air to heat the water inside the diversion cavity 22, so as to assist in heating the inside of the molding cavity 211;

[0055] The injection molding raw material enters the inside of the molding cavity 211. During the step-by-step heating, the injection molding raw material is completely melted and perfectly fills the inside of the molding cavity 211 to form a corrugated box;

[0056] When the injection molding is almost over: The blower module 43 supplies cold air. At this time, the adjusting block 421 rotates to the third position. The cold air enters the air guide cavity 23 from the second air pipe 432, and cools the water inside the diversion cavity 22 through the molding cavity 211. Among them, the cold air enters the outer cover cylinder 263 through the mating groove 264, and cools the injection molding raw material through the second temperature guide plate 262 and the discharge pipe 261 to slightly agglomerate;

[0057] The liquid supply pump module 44 conducts water circulation. At this time, the adjusting block 421 rotates to the third position, and water enters the inside of the diversion cavity 22 from the second liquid pipe 442 for internal circulation, and then flows back to the position of the liquid supply pump module 44 from the fourth liquid pipe 444. After the water is cooled, it cools the inside of the molding cavity 211, realizing rapid molding after injection molding. At this time, the water flow inside the mating cavity 24 included in the fixed mold assembly 2 is closed through the provided pressure relief valve 242, maintaining static extrusion of the first sealing plate 243 to prevent the water flow from affecting the sealing between the first sealing plate 243 and the second sealing plate 244;

[0058] After injection molding: The fan module 43 still supplies cold air. The adjusting block 421 rotates to the third position, and the liquid supply pump module 44 recovers water, collecting the water in a centralized manner after water circulation back to the water supply tank of the liquid supply pump module 44. At this time, the corresponding adjusting block 421 rotates to the second position, and there is no water inside the diversion cavity 22 and the mating cavity 24 included in the moving mold assembly 3, so the electric push rod 14 can pull the moving mold assembly 3 away from the side position of the fixed mold assembly 2;

[0059] The external robotic arm takes the injection-molded enclosure box. The fan module 43 still supplies cold air. The adjusting block 421 rotates to the third position, and the liquid supply pump module 44 conducts water circulation. The corresponding adjusting block 421 rotates to the third position. At this time, the first connection groove 222 and the air guide cavity 23 of the fixed mold assembly 2 are closed by the cooperation of the cooperation rod 251 and the mounting block 25, further cooling the wall surface of the molding cavity 211, completing the afterheat cooling of the enclosure box, facilitating the robotic arm to take the material, and preventing the enclosure box from adhering to the mold plate 21 and preventing wire drawing at the injection molding raw material discharge port;

[0060] During long-term use, the fan module 43 supplies hot air. The adjusting block 421 rotates to the second position. At this time, the hot air only enters the side and the feeding port of the screw conveyor 11 from the third air pipe 433. The clean raw materials supplied by the heating and feeding barrel 12 and the residual injection molding raw materials in the screw conveyor 11 are completely melted and discharged through the screw conveyor 11, cleaning the inside of the screw conveyor 11.

[0061] The above has described the embodiments of the present invention in detail with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made without departing from the spirit of the present invention within the scope of knowledge of those skilled in the art to which the present invention pertains.

Claims

1. A plastic panel box injection molding device, comprising a base frame (1), a screw conveyor (11) is arranged on the upper side of the base frame (1), a heating feed barrel (12) is arranged at the inlet of the screw conveyor (11), a fixed mold assembly (2) is fixedly arranged on the upper side of the base frame (1) corresponding to the position of the screw conveyor (11), a movable mold assembly (3) is movably arranged on the upper side of the base frame (1) corresponding to the position of the fixed mold assembly (2), a restraining rod (13) is arranged between the fixed mold assembly (2) and the movable mold assembly (3), an electric push rod (14) is fixedly installed on the side of the rectangular plate of the restraining rod (13), and an auxiliary assembly (4) is arranged on the upper side of the fixed mold assembly (2); Features: The fixed mold assembly (2) comprises a mold plate (21), a molding cavity (211) and a matching cavity (24) are provided on the side of the mold plate (21), and a flow guide cavity (22), a first connecting groove (222), an air guide cavity (23), a second connecting groove (231), an air outlet groove (232) and a matching cavity (24) are respectively provided inside the mold plate (21). The internal structure of the above movable mold assembly (3) is completely the same as that of the fixed mold assembly (2), except that; The fixed mold assembly (2) comprises a matching cavity (24) in which a first sealing plate (243) is movably installed, a first connecting groove (222) and a second connecting groove (231) are provided with a mounting block (25), a matching rod (251) and a supporting cylinder (252), and a discharge pipe (261) and a second heat conducting plate (262) are provided in the mold plate (21); The movable mold assembly (3) includes a matching cavity (24) in which a second sealing plate (244) is movably installed, and a trigger rod (253) is arranged inside the first connecting groove (222) and the second connecting groove (231); The auxiliary component (4) comprises a mounting body (41), an adjusting block (421) is arranged inside the mounting body (41), and a fan module (43) and a liquid supply pump module (44) are arranged on the side of the mounting body (41).

2. A plastic panel box injection molding device according to claim 1, characterized in that: The mold plate (21) is fixedly mounted on the upper side of the screw conveyor (11), wherein the mold plate (21) having the same structure as the movable mold assembly (3) is movably mounted on the upper side of the screw conveyor (11), the guide cavity (22) is arranged inside the mold plate (21) at a position corresponding to the molding cavity (211), the air guide cavity (23) is arranged inside the mold plate (21) at a position corresponding to the guide cavity (22), the first temperature guide plate (221) is arranged on the wall surface of the guide cavity (22) and penetrates the wall surface of the guide cavity (22). The mold plate (21) passes through the mold plate (21) to the interior of the air guide cavity (23); the first connecting groove (222) is provided on the wall surface of the air guide cavity (22); the second connecting groove (231) is provided on the wall surface of the air guide cavity (23) at a position corresponding to the first connecting groove (222); the air outlet groove (232) is provided on the side surface of the mold plate (21) at a position corresponding to the air guide cavity (23); the matching cavity (24) is provided on the side surface of the mold plate (21); and a connecting cavity (241) is provided on the wall surface of the matching cavity (24).

3. A plastic panel box injection molding device according to claim 2, characterized in that: The first sealing plate (243) is tightly fitted on the wall of the matching cavity (24); a pressure relief valve (242) is fixedly installed inside the connecting cavity (241); the mounting block (25) is fixedly installed on the inner walls of the first connecting groove (222) and the second connecting groove (231); the matching rod (251) is movably installed at the center position of the mounting block (25); the support tube (252) is fixedly connected between the matching rod (251) and the side of the mounting block (25) and is movably sleeved on the side position of the matching rod (251).

4. A plastic panel box injection molding device according to claim 3, characterized in that: The second sealing plate (244) is tightly fitted on the wall of the matching cavity (24), the trigger rod (253) is fixedly mounted on the inner walls of the first connecting groove (222) and the second connecting groove (231), and support springs (245) are fixedly mounted equidistantly on the sides of the first sealing plate (243) and the second sealing plate (244), and the other ends of the support springs (245) are respectively fixedly connected to the corresponding positions on the wall of the matching cavity (24).

5. A plastic panel box injection molding device according to claim 4, characterized in that: The fixed mold assembly (2) includes a mold plate (21) having a connecting cavity (26) at the center of the side thereof, a discharge pipe (261) fixedly installed inside the connecting cavity (26), a second heat conduction plate (262) threadedly fixedly sleeved on the side of the discharge pipe (261), an outer cover tube (263) fixedly sleeved on the side of the discharge pipe (261), and a matching groove (264) formed on the inner side of the outer cover tube (263).

6. A plastic panel box injection molding device according to claim 5, characterized in that: The mounting body (41) is fixedly mounted on the upper side of the fixed mold assembly (2); an inner cavity (42) is provided on the upper side of the mounting body (41); a first slot (411) is provided on the wall of the inner cavity (42) in a mirror image; a second slot (412) is provided on the wall of the inner cavity (42) at a position corresponding to the first slot (411); an adjusting block (421) is movably mounted inside the inner cavity (42); an adjusting slot (422) is provided on a side of the adjusting block (421); and a motor (423) is fixedly mounted on the side of the adjusting block (421).

7. The plastic panel box injection molding device according to claim 6, characterized in that: The fan module (43) is fixedly mounted on the upper side of the mold plate (21); a first air pipe (431) is fixedly connected to the air outlet of the fan module (43) and extends into the first slot (411); a second air pipe (432) is fixedly mounted on the side of the mounting body (41) and extends from the mold plate (21) to the inside of the air guide cavity (23); a third air pipe (433) is fixedly mounted on the side of the mounting body (41) and the other ends of the third air pipe (433) are respectively connected to the outside of the screw conveyor (11) and the feed inlet of the screw conveyor (11); a one-way valve (434) is arranged on the side of the third air pipe (433) at a position corresponding to the feed inlet of the screw conveyor (11).

8. The plastic panel box injection molding device according to claim 7, characterized in that: The liquid supply pump module (44) is fixedly mounted on the upper side of the mold plate (21); a first liquid pipe (441) is fixedly connected to the water outlet of the liquid supply pump module (44) and extends through the first slot (411); a second liquid pipe (442) is fixedly mounted on the side of the mounting body (41) and extends through the mold plate (21) to the inside of the guide cavity (22); a third liquid pipe (443) is fixedly mounted on the side of the mounting body (41) and extends through the mold plate (21) to the inside of the matching cavity (24); and a fourth liquid pipe (444) is fixedly connected to the water inlet of the liquid supply pump module (44) and extends through the mold plate (21) to the inside of the guide cavity (22).

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