Injection mold for plastic packaging and processing and use method

Abstract

The invention discloses an injection mold for plastic packaging and processing and a using method, and relates to the technical field of plastic processing. The injection mold comprises an upper injection mold arranged on a material injection assembly; the lower injection mold is arranged in the processing platform; and the cooling unit is arranged in the injection molding lower mold, is used for achieving rapid cooling of the injection molding raw materials and comprises a bearing assembly, a liquid guide assembly and a circulating assembly, the bearing assembly is used for achieving bearing forming of the injection molding raw materials and is matched with the liquid guide assembly to achieve stepped preliminary cooling, and the circulating assembly is matched with the liquid guide assembly to achieve efficient cooling. The injection molding machine has the beneficial effects that cooling water can be automatically injected in advance according to the injection weight while molten materials are subjected to injection molding, front pre-heat dissipation of the molten materials and wrapping of injection molding raw materials are achieved, and the situation of deformation during cooling molding can be avoided in cooperation with the heat dissipation mode of liquid cooling circulation after material injection is completed.

Description

Technical Field

[0001] The invention relates to the technical field of plastic processing, and in particular to an injection mold for plastic packaging and processing and a use method thereof. Background Art

[0002] Expanded polypropylene, or EPP, is a highly crystalline polypropylene / CO2 composite material with excellent performance. It has good resistance to energy absorption, high recovery rate after deformation, good heat resistance, chemical resistance, oil resistance and thermal insulation. EPP plastic products are usually processed and molded by injection molding.

[0003] Existing injection molds use a variety of methods to achieve the processing and molding of plastic products, such as an efficient injection mold for plastic product processing with publication number CN220362906U, which includes a base, a mounting frame is fixedly connected to the rear end of the top of the base, a motor is fixedly connected to the center position of the top of the mounting frame, a threaded rod is passed through and fixedly connected to the output end of the motor, and a nut pair is threadedly connected to the upper middle position of the threaded rod;

[0004] The high-temperature molten injection molding materials in the existing injection mold require a long cooling time after injection molding is completed. Therefore, a liquid cooling device is usually provided in the injection mold to speed up the cooling speed. The existing liquid cooling device is usually started after all the injection molding materials are injected. At this time, due to the different flow times of the liquid, the injection molding materials in the mold cannot dissipate heat evenly, which can easily cause the injection molding materials to deform during molding. For example, the above-mentioned referenced prior art uses a water pump to inject water into a water pipe arranged outside the mold for cooling. This liquid cooling method causes the front of the mold to contact with the cooling water first for cooling. At this time, the rear of the mold cannot be cooled, resulting in uneven cooling of the front and rear of the mold. At the same time, the device cannot perform targeted pre-heating according to the content of the injection molding materials in the mold, and the heat dissipation efficiency is poor.

[0005] Therefore, it is urgent to design a kind of injection mold and use method of plastic packaging and processing to solve the above problems. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides an injection mold for plastic packaging and processing and a method of use, which solves the problems raised in the above background technology.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: an injection mold for plastic packaging and processing, the injection mold is arranged on a processing platform, and the processing platform is provided with an injection component for realizing injection molding raw material injection, comprising:

[0008] The upper injection mold is arranged on the injection assembly and is used to conduct the injection raw material;

[0009] The lower injection mold is arranged in the processing platform and is used to cooperate with the upper injection mold to realize the injection molding processing of the plastic packaging part;

[0010] The cooling unit is arranged in the lower injection mold and is used to achieve rapid cooling of the injection molding material. It includes a load-bearing component, a liquid guiding component and a circulation component. The load-bearing component is used to achieve load-bearing molding of the injection molding material and cooperate with the liquid guiding component to achieve stepped preliminary cooling. The circulation component and the liquid guiding component are used to achieve efficient cooling.

[0011] Preferably, the processing platform is arranged on an equipment rack, and the equipment rack is arranged on an equipment box, an injection molding unit for realizing melting and stable injection of injection molding raw materials is arranged on the processing platform, and a processing component for processing and conducting injection molding raw materials is arranged in the injection molding unit;

[0012] A control console is arranged on the side of the equipment frame, and the control console cooperates with the injection unit and the cooling unit to control the operation and opening and closing states of the injection unit and the cooling unit, so as to realize the automatic injection molding of the plastic packaging.

[0013] Preferably, the processing assembly includes an injection molding box arranged on the processing platform, the injection molding box is provided with a feeding pipe for placing injection molding raw materials, an injection molding pump is provided in the injection molding box, and the feeding end of the injection molding pump is connected with the feeding pipe, a heating pipe is provided on the discharge end of the injection molding pump, and the heating pipe is used to heat and melt the injection molding raw materials into injection molding molten material, and an injection pipe for conducting the injection molding molten material is fixedly connected between the heating pipe and the injection molding box.

[0014] Preferably, the injection assembly includes a support plate fixedly mounted in an equipment frame, a storage cylinder is provided on the support plate, and the storage cylinder is connected to the injection pipe, the lower end of the storage cylinder is fixedly connected to an injection gun for injecting molten material through a telescopic catheter, and a lifting mechanism is installed between the injection gun and the injection upper mold.

[0015] Preferably, the lifting mechanism includes a hydraulic push rod fixedly mounted on a support plate, a plurality of limit slide bars are fixedly mounted between the support plate and the processing platform, a lifting plate is slidably mounted on the plurality of limit slide bars, and an injection molding gun is fixedly mounted on the lifting plate, and a driving end of the hydraulic push rod is fixedly connected to the lifting plate, two spring frames are arranged at the lower part of the lifting plate, a plurality of snap rings are arranged at the upper part of the injection molding upper mold, and a plurality of snap hooks matching with the corresponding snap rings are arranged on the two spring frames, and a feed pipe matching with the injection molding gun is arranged on the injection molding upper mold.

[0016] Preferably, the bearing assembly includes a built-in groove opened in the lower injection mold, an injection mold box for processing plastic packaging is slidably installed in the built-in groove, and a plurality of supporting springs are clamped and installed between the bottom of the injection mold box and the bottom wall of the built-in groove.

[0017] Preferably, the liquid guiding assembly comprises two liquid storage boxes fixedly mounted in the lower injection mold, both of the liquid storage boxes are filled with coolant, a synchronization mechanism is installed between each of the liquid storage boxes and the injection mold box, a plurality of heat absorbing tubes are fixedly connected between the two liquid storage boxes, and the middle parts of the plurality of heat absorbing tubes are all located directly below the injection mold box.

[0018] Preferably, the synchronization mechanism includes a water pressure magnetic plate slidably installed in a liquid storage box, two limit support frames matched with the water pressure magnetic plate are fixedly installed in the liquid storage box, a lifting slide groove is opened on the side of the liquid storage box, and an active permanent magnet block matched with the water pressure magnetic plate is slidably installed in the lifting slide groove, and a synchronization plate is installed on the active permanent magnet block and the side of the injection mold box.

[0019] Preferably, the circulation assembly comprises a condensing box fixedly installed in the equipment box, a conveying circulation pump is arranged in the condensing box, and a circulation pipe for circulating cooling water is fixedly connected between the water outlet of the water conveying circulation pump and the two liquid storage boxes, and a connecting pipe is commonly connected to the plurality of heat absorbing pipes, and a downpipe is connected between the lower end of the connecting pipe and the condensing box;

[0020] The outside of each heat absorbing tube is sleeved with a heat-sensitive ring for sensing the temperature of the heat absorbing tube. Two spring trigger rods are arranged on the lower injection mold, and the spring trigger rods are triggered and started under the heat-sensing action of multiple heat-sensitive rings to lift the upper injection mold, and at the same time, the conveying circulation pump is started under the control of the console.

[0021] A method for using an injection mold for plastic packaging and processing, which is used for the above-mentioned injection mold for plastic packaging and processing, comprises the following steps:

[0022] S1, start the injection unit to drive the upper injection mold to move downward and engage it into the lower injection mold;

[0023] S2, placing the injection molding raw material into the processing component, heating and melting it, and injecting the injection molding raw material into the lower injection molding mold through the injection component;

[0024] S3. According to the amount of injection molding material in the lower injection mold, targeted heat dissipation and cooling are started through the liquid guide component during injection molding;

[0025] S4. After all the injection molding materials are injected, the cooling unit is used for circulating heat dissipation.

[0026] The present invention provides an injection mold for plastic packaging and processing and a method of using the same. The invention has the following beneficial effects:

[0027] 1. When the injection mold is used for injection molding of plastic packaging, the quantitative heating and melting of the injection molding raw materials can be achieved through the cooperation of the processing components and the injection components, and the rapid injection molding of the appropriate amount of injection molding molten material can be completed according to the amount of the plastic packaging to be injected, so the injection molding efficiency is higher and no waste is generated.

[0028] 2. When the injection mold is used to inject plastic packaging, it can automatically inject a certain amount of cooling water to pre-dissipate the injected molten material according to the weight of the molten material injected in real time while injecting the molten material, which can effectively improve the efficiency of subsequent cooling.

[0029] 3. When the injection mold is used for injection molding of plastic packaging, after the injection molding is completed, the circulation component can be automatically started to perform cooling circulation of cooling water according to the temperature of the injection molten material. Before the circulation, the liquid storage box and the heat absorption conduit are filled with cooling water for pre-dissipation of heat, which can effectively avoid the occurrence of uneven cooling.

[0030] 4. When the injection mold is used to inject plastic packaging, after the molten material is injected, the upper injection mold can be automatically ejected according to the cooling situation, and the closed state of the lower injection mold can be released in advance, so that the plastic packaging in the lower injection mold can directly exchange heat with the external air, further improving the efficiency of cooling molding.

[0031] In summary, the present invention can automatically realize the advance injection of cooling water according to the injection weight while injecting the molten material, realize the pre-heating of the molten material and the wrapping of the injection raw material, and after the injection is completed, cooperate with the heat dissipation method of the liquid cooling cycle to avoid deformation during cooling and molding.

[0032] Other features and advantages of the present invention will be described in the following description, and part of them will become obvious from the description, or will be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the written description and the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The specific embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings, wherein:

[0034] Figure 1 A schematic structural diagram of an injection mold for plastic packaging and processing proposed by the present invention;

[0035] Figure 2 for Figure 1 Schematic diagram of the structure after rotating a certain angle;

[0036] Figure 3 for Figure 2 Schematic diagram of the structure after removing the equipment rack;

[0037] Figure 4 for Figure 3 Schematic diagram of the structure after removing the equipment box;

[0038] Figure 5 for Figure 4 Schematic diagram of the structure of the storage cylinder and lifting plate;

[0039] Figure 6 for Figure 5 Schematic diagram of the structure of the middle injection upper mold and two spring frames;

[0040] Figure 7 for Figure 4 Schematic diagram of the structure of the lower injection mold and the upper injection mold;

[0041] Figure 8 for Figure 7 Schematic diagram of the structure after removing the upper injection mold;

[0042] Fig. 9 for Figure 8 Schematic diagram of the internal structure of the lower injection mold;

[0043] Fig.10 for Fig. 9 A front view of

[0044] Fig.11 for Fig. 9 A schematic diagram of the structure of two liquid storage boxes;

[0045] Fig.12 for Fig.11 Schematic diagram of the structure after rotating a certain angle;

[0046] Fig.13 for Fig.11 Schematic diagram of the structure after removing the injection mold box;

[0047] Fig.14 for Fig.13 Schematic diagram of the internal structure of the two liquid storage boxes;

[0048] Fig.15 for Fig.14 Front view of the fluid reservoir and synchronization plate.

[0049] In the figure: 1 equipment box, 2 equipment frame, 3 processing platform, 4 lower injection mold, 5 injection box, 6 feeding pipe, 7 injection pipe, 8 storage cylinder, 9 support plate, 10 lifting plate, 11 limit slide bar, 12 upper injection mold, 13 condensation box, 14 hydraulic push rod, 15 telescopic guide tube, 16 positioning pin, 17 spring frame, 18 injection gun, 19 clamping ring, 20 feeding pipe, 21 circulation pipe, 22 spring trigger rod, 23 positioning hole, 24 built-in groove, 25 injection mold box, 26 support spring, 27 storage box, 28 down pipe, 29 synchronization plate, 30 heat absorption guide tube, 31 heat sensitive ring, 32 connecting pipe, 33 water pressure magnetic plate, 34 limit support frame, 35 active permanent magnet block, 36 lifting slide. DETAILED DESCRIPTION

[0050] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0051] Example 1: Reference Figure 1-Figure 2 , an injection mold for plastic packaging and processing, the injection mold is arranged on a processing platform 3, and the processing platform 3 is arranged on an equipment rack 2, and the equipment rack 2 is arranged on an equipment box 1, and the equipment box 1 is provided with a power supply and other equipment for injection molding assistance, and the equipment box 1, the equipment rack 2, and the processing platform 3 are used to support the injection mold to improve the stability of the injection molding process;

[0052] The plastic packaging part is a component that is injection molded by the injection mold. The preparation process is to first heat and melt the injection raw material into a molten injection material, and then inject and cool it into the injection mold to form a plastic.

[0053] This injection mold includes:

[0054] The injection molding unit is arranged on the processing platform 3, and is used to realize the melting of the injection molding raw material and the stable injection of the injection molding raw material, and can realize the quantitative heating and melting of the injection molding raw material, and can complete the rapid injection molding of the appropriate amount of injection molding molten material according to the amount of the plastic packaging to be injected, so that the injection molding efficiency is higher and no waste is generated;

[0055] The injection molding upper mold 12 is arranged on the injection molding assembly to realize the conduction of the injection molding raw material. It can be raised and lowered along with the raising and lowering of the injection molding assembly to realize its stable movement and opening and closing, so as to facilitate the flexible removal and unloading of the plastic packaging after injection molding;

[0056] The lower injection mold 4 is arranged in the processing platform 3, and is used to cooperate with the upper injection mold 12 to realize the injection molding processing of the plastic packaging. The lower injection mold 4 is a molding platform for the plastic packaging, and is used to realize the rapid injection molding and molding of the plastic packaging.

[0057] The cooling unit is arranged in the lower injection mold 4, and is used to achieve rapid cooling of the injection molding raw materials. While injecting the molten material, the cooling water is automatically injected in advance according to the weight of the injected molten material, so as to achieve pre-heating of the injection molding molten material. While pre-heating, the internal wrapping of the lower injection mold 4 can also be achieved simultaneously to avoid the situation where uneven cooling affects the molding. After the injection molding is completed, the circulating heat dissipation is carried out simultaneously, which can effectively improve the cooling and molding efficiency of the plastic packaging.

[0058] A control console is provided on the side of the equipment frame 2, which cooperates with the injection molding unit and the cooling unit to control the operation and opening and closing status of the injection molding unit and the cooling unit, realize the automatic injection molding of plastic packaging parts, realize the precise control of the injection amount of the injection molten material, and avoid waste.

[0059] Example 2: Reference Figure 2-Figure 7 , the technical solution of this embodiment is different from that of the first embodiment in that: the injection molding unit includes a processing component for processing and conducting the injection molding raw material;

[0060] The processing assembly includes an injection molding box 5 arranged on the processing platform 3, and a feeding pipe 6 for placing injection molding raw materials is arranged on the injection molding box 5. An injection molding pump is arranged in the injection molding box 5, and the feeding end of the injection molding pump is connected with the feeding pipe 6. A heating pipe is arranged on the discharge end of the injection molding pump, and the heating pipe is used to heat and melt the injection molding raw materials into injection molding molten material. An injection pipe 7 for conducting the injection molding molten material is fixedly connected between the heating pipe and the injection molding box 5;

[0061] The injection molding box 5 is used to store the injection molding materials to be injected. The injection molding materials are injected into the injection molding box 5 through the feeding pipe 6 for replenishment. When injection molding is required, the injection molding pump will start to suck the injection molding materials and pump them into the heating pipe. The heating pipe will start synchronously to heat the injection molding materials therein so that they are heated and melted into liquid injection molding melt. The liquid injection molding melt will be discharged through the injection pipe 7.

[0062] Before injection molding, a specific amount of injection molten material can be selected according to the weight of the plastic packaging to be injection molded, so as to achieve quantitative injection of the injection molten material, which can not only complete the smooth molding of the plastic packaging and avoid waste, but also avoid the difficulty of demolding caused by excessive injection volume.

[0063] In a further embodiment, an injection assembly for realizing injection molding raw material injection is provided on the processing platform 3, and the injection assembly includes a support plate 9 fixedly installed in the equipment frame 2, a storage cylinder 8 is provided on the support plate 9, and the storage cylinder 8 is connected to the injection pipe 7, and the lower end of the storage cylinder 8 is fixedly connected to an injection gun 18 for injecting molten material through a telescopic guide tube 15;

[0064] The molten material in the injection tube 7 is transferred to the storage tube 8, and then transferred to the injection gun 18 through the telescopic guide tube 15 at the lower part thereof. At this time, the injection gun 18 can perform constant pressure quantitative injection of the molten material.

[0065] The injection gun 18 is a device commonly used in the prior art for injection molding of plastic materials. It can eject the injection molten material quantitatively and at a constant pressure, and is used to inject the molten plastic material into the mold to form plastic parts of the desired shape. This part is prior art and will not be described in detail here.

[0066] The telescopic conduit 15 can be flexibly extended and retracted to adapt to the position of the injection molding gun 18, so that when the injection molding gun 18 is ascending or descending, the telescopic conduit 15 can smoothly conduct the injection molten material to avoid jamming.

[0067] A lifting mechanism is installed between the injection molding gun 18 and the injection molding upper mold 12, and the lifting mechanism includes a hydraulic push rod 14 fixedly installed on the support plate 9, a plurality of limit slide bars 11 are fixedly installed between the support plate 9 and the processing platform 3, and a lifting plate 10 is slidably installed on the plurality of limit slide bars 11, and the injection molding gun 18 is fixedly installed on the lifting plate 10, and the driving end of the hydraulic push rod 14 is fixedly connected to the lifting plate 10;

[0068] Two spring racks 17 are provided at the lower part of the lifting plate 10, a plurality of snap rings 19 are provided at the upper part of the injection upper mold 12, and a plurality of snap hooks matching with the corresponding snap rings 19 are provided on the two spring racks 17, and a feed pipe 20 matching with the injection gun 18 is provided on the injection upper mold 12;

[0069] The two snap rings 19 on the upper injection mold 12 cooperate with the snap hooks on the spring frame 17, so that the upper injection mold 12 can be raised and lowered along with the spring frame 17, and the lifting and lowering movement of the upper injection mold 12 can be automatically completed, so that it can be quickly positioned and engaged with the lower injection mold 4, and after the injection molding is completed, it can quickly rise and separate from the lower injection mold 4, which is more convenient for taking out the plastic packaging.

[0070] The lower injection mold 4 is provided with a plurality of positioning holes 23, and the lower portion of the upper injection mold 12 is fixedly provided with a plurality of positioning pins 16 that match the corresponding positioning holes 23. Before the injection molding of the plastic packaging, the hydraulic push rod 14 is first started to drive the lifting plate 10 to move downward. When the lifting plate 10 moves downward, it will drive the injection gun 18 thereon to move downward, and drive the upper injection mold 12 to move downward through the two spring racks 17. When the upper injection mold 12 moves downward, the plurality of positioning pins 16 thereon will be engaged with the plurality of positioning holes 23 in the lower injection mold 4 to complete the positioning.

[0071] When the upper injection mold 12 and the lower injection mold 4 are completely fitted together, the upper injection mold 12 is limited by the lower injection mold 4 and cannot move further downward. The hydraulic push rod 14 drives the lifting plate 10 to continue to move downward, which will only drive the injection gun 18 to move downward, and at the same time compress the spring frame 17, so that the injection gun 18 moves downward and is pressed into the feed pipe 20 on the upper injection mold 12. After the injection gun 18 completely enters the feed pipe 20, the engagement can be completed. At this time, the injection gun 18 can be started to start the injection molding work of the injection molding molten material, and the injection molding molten material can be injected into the feed pipe 20 and then injected into the upper injection mold 12.

[0072] Example 3: Reference Figure 1-Figure 2 as well as Figure 8-Figure 15 , the technical solution of this embodiment is different from that of the second embodiment in that: the cooling unit includes a bearing component, a liquid guiding component and a circulation component, wherein the bearing component is used to realize the bearing molding of the injection molding material and cooperate with the liquid guiding component to realize the step-type preliminary cooling, and the circulation component cooperates with the liquid guiding component to realize efficient cooling;

[0073] The bearing assembly includes a built-in groove 24 provided in the lower injection mold 4, in which an injection mold box 25 for processing plastic packaging is slidably installed, and a plurality of supporting springs 26 are mounted between the bottom of the injection mold box 25 and the bottom wall of the built-in groove 24;

[0074] The injection mold box 25 is a mold for processing plastic packaging parts. A mold groove for molding plastic packaging parts is provided therein. Different injection mold boxes 25 can be flexibly replaced according to the shape of the plastic packaging parts to be injection molded. The injection molten material in the injection upper mold 12 will be injected into the mold groove in the injection mold box 25. After the injection molten material in the mold groove is cooled, the injection molding is completed.

[0075] In a further embodiment, the liquid guide assembly includes two liquid storage boxes 27 fixedly installed in the lower injection mold 4, the two liquid storage boxes 27 are filled with coolant, a synchronization mechanism is installed between each liquid storage box 27 and the injection mold box 25, a plurality of heat absorbing pipes 30 are fixedly connected between the two liquid storage boxes 27, and the middle parts of the plurality of heat absorbing pipes 30 are all located directly below the injection mold box 25;

[0076] In the initial state, the two liquid storage boxes 27 are fully filled with coolant, that is, when the initial injection of the injection molding melt is performed, the coolant in the two liquid storage boxes 27 can perform preliminary cooling and heat dissipation on the injection molding lower mold 4 to avoid the injection molding lower mold 4 from being overheated, and can also speed up the cooling and molding efficiency of the subsequent injection molding melt.

[0077] The synchronization mechanism includes a water pressure magnetic plate 33 slidably mounted in the liquid storage box 27, two limit support frames 34 matched with the water pressure magnetic plate 33 are fixedly mounted in the liquid storage box 27, a lifting chute 36 is provided on the side of the liquid storage box 27, and an active permanent magnet block 35 matched with the water pressure magnetic plate 33 is slidably engaged in the lifting chute 36, and a synchronization plate 29 is mounted on the active permanent magnet block 35 and the side of the injection mold box 25;

[0078] After the injection molding molten material is injected into the injection mold box 25, the overall weight of the injection mold box 25 will increase synchronously. As the weight increases, the injection mold box 25 will gradually drop. When the injection mold box 25 drops, it will drive the synchronous plate 29 to move downward. When the synchronous plate 29 moves downward, it will drive the active permanent magnet block 35 thereon to move downward in the lifting chute 36. Since the active permanent magnet block 35 cooperates with the water pressure magnetic plate 33, that is, the active permanent magnet block 35 and the water pressure magnetic plate 33 attract each other, when the active permanent magnet block 35 moves downward, it will drive the water pressure magnetic plate 33 to move synchronously downward in the liquid storage box 27 under the adsorption effect of the magnetic attraction force.

[0079] Each heat absorbing conduit 30 is provided with a pressure valve. When the water pressure magnetic plate 33 moves downward, it squeezes the cooling water in the liquid storage box 27. At the same time, the pressure valve in the heat absorbing conduit 30 will be opened synchronously. At this time, the cooling water in the liquid storage box 27 will be poured into the heat absorbing conduit 30. As the weight of the injection mold box 25 gradually increases, the downward range of the water pressure magnetic plate 33 will increase synchronously, so that the cooling water in the heat absorbing conduit 30 will increase synchronously. Since the heat absorbing conduit 30 is located directly below the injection mold box 25;

[0080] When the injection mold box 25 descends, it will gradually approach the heat absorption tube 30. At the same time, the cooling water in the heat absorption tube 30 will gradually increase, which can increase the heat absorption effect of the heat absorption tube 30. As the distance decreases, the heat absorption efficiency of the heat absorption tube 30 is higher. As the amount of injected molten material increases, the heat absorption tube 30 will gradually improve the heat dissipation effect on the injection mold box 25, and achieve stepped targeted pre-preheating, so as to cooperate with the liquid storage box 27 on the side to effectively wrap the injection mold box 25 for pre-heating, which can not only improve the cooling and molding efficiency of the plastic packaging, but also avoid deformation of the plastic packaging due to uneven cooling during subsequent cyclic cooling.

[0081] In a further embodiment, the circulation assembly includes a condenser box 13 fixedly installed in the equipment box 1, a conveying circulation pump is arranged in the condenser box 13, and a heat-sensitive ring 31 for sensing the temperature of the heat-absorbing pipe 30 is sleeved on the outside of each heat-absorbing pipe 30;

[0082] When the injection molten material is completely injected, the injection mold box 25 reaches the maximum weight and moves down to the lowest position. The lower part of the injection mold box 25 is completely in contact with the heat absorbing pipe 30. At this time, the heat absorption efficiency of the heat absorbing pipe 30 reaches the maximum. At the same time, the heat-sensitive ring 31 on the heat absorbing pipe 30 monitors the temperature of the heat absorbing pipe 30. When it is detected that the temperature of the heat absorbing pipe 30 rises rapidly, it is determined that the injection molding is completed and a circulation and efficient heat dissipation is required. The conveying circulation pump can be controlled to start under the action of the console.

[0083] A circulation pipe 21 for circulating cooling water is fixedly connected between the water outlet of the water circulation pump and the two liquid storage boxes 27, a connecting pipe 32 is commonly connected to the multiple heat absorption pipes 30, and a downpipe 28 is connected between the lower end of the connecting pipe 32 and the condensation tank 13, and a control valve is arranged in the downpipe 28;

[0084] When the circulation delivery pump is started, the control valve in the downpipe 28 is opened synchronously, and the cooling water in the condensation tank 13 is injected into the two liquid storage boxes 27 through the two circulation pipes 21. The increased cooling water in the two liquid storage boxes 27 will be injected into the connecting pipe 32, and the cooling water in the connecting pipe 32 will return to the condensation tank 13 through the downpipe 28, thus completing the circulation of the cooling water and taking away the heat of the injection mold box 25 during the circulation process, thereby achieving efficient cooling and heat dissipation.

[0085] Two spring trigger rods 22 are provided on the lower injection mold 4, and the spring trigger rods 22 are triggered and started under the heat-sensing effect of multiple heat-sensitive rings 31. When the heat-sensitive rings 31 sense that the injection molding is completed and the temperature is high, the spring trigger rods 22 automatically start to push the upper injection mold 12 upward for a distance, thereby releasing the closed state of the lower injection mold 4 in advance, so that the plastic packaging in the lower injection mold 4 can directly exchange heat with the external air, further improving the efficiency of cooling and molding.

[0086] In a further embodiment, the specific steps of using the injection mold are as follows:

[0087] Before injection molding, a specific amount of injection molten material can be selected to be injected according to the weight of the plastic packaging part to be injection molded. When injection molding is required, the injection pump will start to suck in the injection raw material and pump it to the heating tube. The heating tube will start to heat the injection raw material inside it synchronously, so that it is heated and melted into liquid injection molten material. The liquid injection molten material will be discharged through the injection tube 7. The injection molten material in the injection tube 7 will be transferred to the storage tube 8, and will be transferred to the injection gun 18 through the telescopic guide tube 15 at the lower part. At this time, the injection gun 18 can perform constant pressure quantitative injection molding of the injection molten material.

[0088] The hydraulic push rod 14 is started to drive the lifting plate 10 to move downward. When the lifting plate 10 moves downward, the injection gun 18 thereon is driven downward, and the upper injection mold 12 is driven downward through the two spring frames 17. When the upper injection mold 12 moves downward, the multiple positioning pins 16 thereon are engaged with the multiple positioning holes 23 in the lower injection mold 4 to complete the positioning.

[0089] When the upper injection mold 12 and the lower injection mold 4 are completely fitted together, the hydraulic push rod 14 drives the lifting plate 10 to continue to move downward, driving the injection molding gun 18 to move downward, so that the injection molding gun 18 moves downward and is pressed into the feed pipe 20 on the upper injection mold 12. After the injection molding gun 18 completely enters the feed pipe 20, the engagement is completed, and the injection molding gun 18 is started to inject the injection molten material into the feed pipe 20 and then into the upper injection mold 12.

[0090] The molten injection material in the upper injection mold 12 will be injected into the mold groove in the injection mold box 25. When the molten injection material is injected, the overall weight of the injection mold box 25 will increase synchronously and drive the injection mold box 25 to gradually descend. The descent of the injection mold box 25 drives the synchronous plate 29 to move downward, and the downward movement of the synchronous plate 29 drives the active permanent magnet block 35 to move downward. The active permanent magnet block 35 moves downward and drives the water pressure magnetic plate 33 to move synchronously downward in the liquid storage box 27 under the adsorption effect of the magnetic attraction force.

[0091] When the water pressure magnetic plate 33 moves downward, it will squeeze the cooling water in the liquid storage box 27 and pour the cooling water into the heat absorption tube 30. As the amount of injected molten material increases, the heat absorption tube 30 will gradually improve the heat dissipation effect on the injection mold box 25, achieving stepped and targeted pre-heating.

[0092] After all the molten material for injection molding is injected, the circulating delivery pump is started and the control valve in the downpipe 28 is opened synchronously to inject the cooling water in the condensation tank 13 into the two liquid storage boxes 27 through the two circulation pipes 21. The increased cooling water in the two liquid storage boxes 27 will be injected into the connecting pipe 32, and the cooling water in the connecting pipe 32 will return to the condensation tank 13 through the downpipe 28, completing the circulation of the cooling water. During the circulation process, the heat of the injection mold box 25 is taken away to achieve efficient cooling and heat dissipation. After the plastic packaging is completely cooled and formed, the upper injection mold 12 is opened to take out the plastic packaging to complete the unloading.

[0093] The embodiment of the present invention also provides a method for using an injection mold for plastic packaging and processing, which is used for the above-mentioned injection mold for plastic packaging and processing, and includes the following steps:

[0094] S1, start the injection unit to drive the upper injection mold 12 to move downward and engage it into the lower injection mold 4;

[0095] S2, placing the injection molding raw material into the processing component, heating and melting, and injecting the injection molding raw material into the lower injection molding mold 4 through the injection component;

[0096] S3, according to the amount of injection molding material in the lower injection mold 4, targeted heat dissipation cooling is started through the liquid guide component during injection molding;

[0097] S4. After all the injection molding materials are injected, the cooling unit is used for circulating heat dissipation.

[0098] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An injection mold for plastic packaging and processing, the injection mold is arranged on a processing platform (3), and the processing platform (3) is provided with an injection component for injecting injection molding raw materials into the injection mold, characterized in that: include: An injection molding upper mold (12) is arranged on the injection molding assembly and is used to conduct the injection molding raw material; The lower injection mold (4) is arranged in the processing platform (3) and is used to cooperate with the upper injection mold (12) to realize the injection molding processing of the plastic packaging part; The cooling unit is arranged in the lower injection mold (4) and is used to realize rapid cooling of the injection molding material. The cooling unit comprises a bearing component, a liquid guiding component and a circulation component. The bearing component is used to realize bearing molding of the injection molding material and cooperate with the liquid guiding component to realize step-by-step preliminary cooling. The circulation component cooperates with the liquid guiding component to realize efficient cooling.

2. An injection mold for plastic packaging and processing according to claim 1, characterized in that: The processing platform (3) is arranged on the equipment frame (2), and the equipment frame (2) is arranged on the equipment box (1); an injection molding unit for realizing melting and stable injection of injection molding raw materials is arranged on the processing platform (3), and a processing component for processing and conducting injection molding raw materials is arranged in the injection molding unit; A control console is arranged on the side of the equipment frame (2), and the control console cooperates with the injection unit and the cooling unit to control the operation and opening and closing states of the injection unit and the cooling unit, thereby realizing automatic injection molding of plastic packaging parts.

3. An injection mold for plastic packaging and processing according to claim 2, characterized in that: The processing assembly comprises an injection molding box (5) arranged on a processing platform (3), the injection molding box (5) is provided with a feeding pipe (6) for placing injection molding raw materials, an injection molding pump is arranged in the injection molding box (5), and the feeding end of the injection molding pump is connected to the feeding pipe (6), the discharge end of the injection molding pump is provided with a heating pipe, and the heating pipe is used to heat and melt the injection molding raw materials into injection molding molten material, and an injection pipe (7) for conducting the injection molding molten material is fixedly connected between the heating pipe and the injection molding box (5).

4. An injection mold for plastic packaging and processing according to claim 3, characterized in that: The injection assembly comprises a support plate (9) fixedly mounted in an equipment frame (2); a storage cylinder (8) is arranged on the support plate (9), and the storage cylinder (8) is connected to an injection pipe (7); the lower end of the storage cylinder (8) is fixedly connected to an injection gun (18) for injecting molten material via a telescopic guide tube (15); and a lifting mechanism is installed between the injection gun (18) and the injection upper mold (12).

5. An injection mold for plastic packaging and processing according to claim 4, characterized in that: The lifting mechanism comprises a hydraulic push rod (14) fixedly mounted on a support plate (9), a plurality of limit slide bars (11) fixedly mounted between the support plate (9) and the processing platform (3), and a lifting plate (10) slidably mounted on the plurality of limit slide bars (11), and an injection molding gun (18) fixedly mounted on the lifting plate (10), and a driving end of the hydraulic push rod (14) is fixedly connected to the lifting plate (10), two spring frames (17) are arranged at the lower part of the lifting plate (10), a plurality of snap rings (19) are arranged at the upper part of the injection molding upper mold (12), and a plurality of snap hooks matched with the corresponding snap rings (19) are arranged on the two spring frames (17), and a feeding pipe (20) matched with the injection molding gun (18) is arranged on the injection molding upper mold (12).

6. An injection mold for plastic packaging and processing according to claim 2, characterized in that: The bearing assembly comprises a built-in groove (24) provided in the lower injection mold (4), an injection mold box (25) for processing plastic packaging parts being slidably installed in the built-in groove (24), and a plurality of supporting springs (26) being mounted and engaged between the bottom of the injection mold box (25) and the bottom wall of the built-in groove (24).

7. An injection mold for plastic packaging and processing according to claim 6, characterized in that: The liquid guide assembly comprises two liquid storage boxes (27) fixedly installed in the lower injection mold (4), the two liquid storage boxes (27) are filled with cooling liquid, a synchronization mechanism is installed between each of the liquid storage boxes (27) and the injection mold box (25), a plurality of heat absorption pipes (30) are fixedly connected between the two liquid storage boxes (27), and the middle parts of the plurality of heat absorption pipes (30) are located directly below the injection mold box (25).

8. An injection mold for plastic packaging and processing according to claim 7, characterized in that: The synchronization mechanism comprises a water pressure magnetic plate (33) slidably mounted in a liquid storage box (27), two limit support frames (34) matched with the water pressure magnetic plate (33) are fixedly mounted in the liquid storage box (27), a lifting slot (36) is provided on the side of the liquid storage box (27), and an active permanent magnet block (35) matched with the water pressure magnetic plate (33) is slidably mounted in the lifting slot (36), and a synchronization plate (29) is mounted on the active permanent magnet block (35) and the side of the injection mold box (25) in a locking manner.

9. An injection mold for plastic packaging and processing according to claim 8, characterized in that: The circulation assembly comprises a condensing box (13) fixedly installed in the equipment box (1), a conveying circulation pump is arranged in the condensing box (13), and a circulation pipe (21) for circulating cooling water is fixedly connected between the water outlet end of the water conveying circulation pump and two liquid storage boxes (27), a connecting pipe (32) is commonly connected to the plurality of heat absorbing pipes (30), and a downpipe (28) is connected between the lower end of the connecting pipe (32) and the condensing box (13); The exterior of each heat absorbing conduit (30) is sleeved with a heat-sensitive ring (31) for sensing the temperature of the heat absorbing conduit (30); two spring trigger rods (22) are arranged on the lower injection mold (4); and the spring trigger rods (22) are triggered and started under the heat-sensing action of the plurality of heat-sensitive rings (31), thereby lifting the upper injection mold (12) and starting the conveying circulation pump under the control of the control console.

10. A method for using an injection mold for plastic packaging and processing, used for the injection mold for plastic packaging and processing as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: S1, starting the injection unit to drive the upper injection mold (12) to move downward and engage it in the lower injection mold (4); S2, placing the injection molding raw material into the processing component to heat and melt it, and injecting the injection molding raw material into the lower injection molding mold (4) through the injection component; S3, according to the amount of injection molding material in the lower injection molding mold (4), targeted heat dissipation cooling is started through the liquid guide component during injection molding; S4. After all the injection molding materials are injected, the cooling unit is used for circulating heat dissipation.

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