A mobile phone shell production injection molding equipment

Abstract

The application discloses a kind of injection molding equipment for mobile phone shell production, including the shell placed on ground, extraction box and collection frame are provided on shell, upper die device is provided in shell, pusher is provided on shell, lower die device is provided on shell, cooling device is provided on extraction box, upper die device is used to stir material and cooperate lower die device to form mobile phone shell, lower die device is used to cooperate upper die device to form mobile phone shell, pusher is used to push the mobile phone shell after forming into collection frame, cooling device is used to cool the mobile phone shell after injection molding.The application can realize the coherent of a series of actions such as stirring, injection molding, cooling, discharging and the like of injection molding raw materials, and realize the combination of multiple actions through a power source, the batch automatic production of mobile phone shell is carried out through the mode of injection molding, the production efficiency is high, and the automatic collection feeding action is carried out, the whole process does not need manual intervention, and the degree of automation is high.

Description

Technical Field

[0001] This invention relates to the field of injection molding technology for housings, and in particular to an injection molding equipment for producing mobile phone housings. Background Technology

[0002] Injection molding is a processing method used for mass production of complex-shaped parts, mainly applied in industrial fields. The injection molding process involves molten material being injected into the mold cavity, cooling and solidifying to obtain the molded product. An injection mold typically consists of a moving mold and a fixed mold. During injection molding, the moving and fixed molds close to form the gating system and cavity. When the mold opens, the moving and fixed molds separate to remove the plastic product. The material used for injection molding needs to be continuously stirred to prevent solidification. Chinese invention patent CN114211693A discloses a pressing device for manufacturing mobile phone cases. This device provides a closed-loop injection molding pressing device for mobile phone cases, including a supporting shell, opening and closing doors, mounting plates, first guide rods, and moving blocks. The supporting shell has sliding opening and closing doors on both the front and rear sides, and mounting plates on both sides. Two first guide rods are located on the inner sides of each mounting plate. There are four first guide rods, and moving blocks are slidably arranged between the four first guide rods. This invention uses a first distance sensor to detect when the distance between the upper and lower closing modules on the left reaches a preset value. When this value is reached, a solenoid valve opens, and then, under air pressure, molten plastic is injected from the guide tube between the upper and lower closing modules, thus achieving sealed injection molding and resulting in an aesthetically pleasing phone case. However, this existing technology suffers from the problem of raw materials easily solidifying during injection molding, affecting the molding effect. Furthermore, the injection process is cumbersome, the actions are discontinuous, and it is inconvenient to use. Summary of the Invention

[0003] To address the aforementioned technical problems, the present invention adopts the following technical solution: an injection molding equipment for producing mobile phone casings, comprising a casing placed on the ground, a withdrawal box and a collection frame provided on the casing, an upper mold device provided inside the casing, the upper mold device including a column, a lower pressure plate slidably mounted on the column, the column being fixedly installed inside the casing, an ejection device provided on the casing, the ejection device including a tripod slidably mounted with the casing, a lower mold device provided on the casing, the lower mold device including a fixing plate fixedly mounted on the casing, a cooling device provided on the withdrawal box, the cooling device including a cold water tank fixedly mounted on the withdrawal box, the upper mold device being used to stir the material and cooperate with the lower mold device to form the mobile phone casing, the lower mold device being used to cooperate with the upper mold device to form the mobile phone casing, the ejection device being used to push the formed mobile phone casing into the collection frame, and the cooling device being used to cool the injection-molded mobile phone casing.

[0004] The raw materials are put into the upper mold device for stirring, and the phone case is formed by the cooperation of the upper and lower molds. The formed phone case is cooled by the cooling device, and then the formed phone case is pushed into the collection box by the ejection device.

[0005] Furthermore, the upper mold device includes a fixed rack fixedly installed on the inner wall of the outer shell, a mixing tank fixedly installed on the lower pressure plate, a gear frame fixedly installed on the mixing tank, an intermediate gear and a winding gear rotatably installed on the gear frame, the fixed rack meshing with the intermediate gear, the intermediate gear and the winding gear meshing, a mixing shaft rotatably installed inside the mixing tank, a spool fixedly installed on the mixing shaft, a winding thread wound around the spool and the winding gear, an injection tube fixedly installed at the bottom of the mixing tank, an upper mold fixedly installed at the bottom of the lower pressure plate, the other end of the injection tube fixedly installed to the upper mold, an injection plug fixedly installed on the lower pressure plate, a lower pressure frame fixedly installed on the top of the injection plug, a compression spring provided between the lower pressure frame and the lower pressure plate, a connecting plate fixedly installed at the bottom of the lower pressure plate, and an upper mold groove provided on the upper mold.

[0006] Driven by the lower mold device, the lower pressure frame descends. The descent of the lower pressure frame first causes the lower pressure plate to descend along the column. During the descent of the lower pressure plate, the fixed rack drives the intermediate gear and the winding gear to rotate, thereby driving the spool and the stirring shaft to rotate and stir the raw materials in the mixing tank to prevent the raw materials from condensing. After the lower pressure plate carries the upper mold down and fits with the lower mold device, the lower pressure frame continues to descend and squeezes the injection plug to squeeze the raw materials flowing from the injection tube into the upper mold and the lower mold device. The squeeze spring is compressed, and the injection action is performed.

[0007] Furthermore, the ejection device includes a fixed ladder block fixedly installed on the outer shell, a push plate fixedly installed on the tripod, a return spring provided between the tripod and the outer shell, a sliding column slidably installed on the connecting plate, an expansion plate fixedly installed on the sliding column, and a compression spring provided between the expansion plate and the connecting plate.

[0008] When the lower platen begins to descend, it will drive the outer expansion plate to descend simultaneously. The outer expansion plate pushes out the tripod and the push plate, and pushes out the previously formed mobile phone case from the lower mold device. At this time, the return spring is stretched. When the outer expansion plate continues to descend and aligns with the fixed ladder block, the outer expansion plate will move to both sides under the action of the fixed ladder block. At this time, the sliding column slides in the connecting plate, the compression spring is squeezed, and the outer expansion plate disengages from the tripod. At this time, the tripod and the push plate return to their initial positions under the rebound action of the return spring.

[0009] Furthermore, the lower mold device includes a motor fixedly mounted on the housing, a motor wheel fixedly mounted on the output end of the motor, a lead screw shaft rotatably mounted on the fixed plate, a side wheel fixedly mounted on the lead screw shaft, a transmission belt wound around the motor wheel and the side wheel, a shaft wheel fixedly mounted on the lead screw shaft, a gear shaft rotatably mounted on the fixed plate, a connecting belt wound around the gear shaft and the shaft wheel, a bevel gear fixedly mounted on the gear shaft, a long shaft and a transmission wheel rotatably mounted on the fixed plate, a side bevel gear fixedly mounted on the long shaft, the side bevel gear meshing with the bevel gear, an output belt wound around the long shaft and the transmission wheel, and a lower block fixedly mounted on the fixed plate, on which a lower block is fixedly mounted. It has a side sliding column, which is slidably installed with the lower pressure plate. A downward pressure spring is set between the lower pressure plate and the lower block. An outer column is fixedly installed at the bottom of the lower pressure plate. An inner column is slidably installed on the outer column. The inner column is slidably installed with the lower block. A base plate is fixedly installed at the bottom of the inner column. A lifting seat is fixedly installed on the base plate. An ejector is fixedly installed on the lifting seat. The ejector is slidably installed with the lower block. A bottom spring is set between the base plate and the lower block. A lower mold is fixedly installed on the lower block. The ejector is slidably installed with the lower mold. A lower mold body is fixedly installed on the lower mold. A molded mobile phone case is placed on the ejector. An inner spring is set between the inner column and the outer column. The lead screw shaft and the lower pressure frame form a threaded engagement.

[0010] The motor rotation drives the motor wheel to rotate, which in turn drives the side wheel and lead screw shaft to rotate via the transmission belt. This causes the lower pressure frame to move downwards. The lower pressure frame descends by first causing the lower pressure plate to descend along the side sliding column. At the same time, the lower pressure plate carries the outer column down, which in turn drives the inner column down, thus causing the base plate and ejector frame to descend. This makes the upper edge of the ejector frame flush with the surface of the lower mold. At this point, the ejector plate pushes out the molded phone case. Subsequently, the outer column continues to descend, which compresses the inner spring, but the ejector frame stops descending. The lower pressure plate and upper mold continue to descend, and then the upper mold and lower mold come into contact. Through the cooperation of the lower mold body and the upper mold groove, the lower pressure frame continues to descend, squeezing the injection plug to force the raw material flowing from the injection tube into the space between the upper mold and the upper mold groove for injection molding. At the same time, the lead screw shaft rotates, which drives the long shaft to rotate via the connecting belt, thereby driving the output belt to rotate and transport the molded phone case pushed out by the ejector plate into the collection box.

[0011] After one injection molding process is completed, the motor reverses and drives the lower pressure frame to rise. At this time, the lead screw shaft rotates and drives the lower pressure frame to rise. First, under the action of the compression spring, the injection plug returns to its initial position. Then, the lower pressure frame rises and drives the lower pressure plate to rise, thereby driving the outer column to rise. The inner spring gradually returns to a state of no force. Then, the outer column drives the inner column to rise, thereby driving the base plate and the ejector frame to rise. The ejector frame rises and pushes out the molded mobile phone case. At the same time, the lower pressure spring returns to its initial position in conjunction with the lower pressure plate. At the same time, the lower pressure plate drives the outer expansion plate to rise. When the outer expansion plate is free from the position restriction of the fixed ladder block and reaches the top of the tripod, under the rebound action of the compression spring, the outer expansion plate returns to its initial position.

[0012] Furthermore, the cooling device includes an upper water inlet and a lower water inlet fixedly installed on the cold water tank. An upper cooling pipe is fixedly installed on the upper water inlet, and an upper water outlet is fixedly installed on the upper cooling pipe. A lower cooling pipe is fixedly installed on the lower water inlet, and a lower water outlet is fixedly installed on the lower cooling pipe. The upper cooling pipe is fixedly installed with the upper mold, and the lower cooling pipe is fixedly installed with the lower mold.

[0013] Cooling water is output from the cold water tank, flows into the upper cooling pipe through the upper inlet and out through the upper outlet, and at the same time, the cooling water flows through the lower cooling pipe and out through the lower outlet, cooling the upper and lower molds after injection molding, so that the molded mobile phone case can be cooled and formed quickly.

[0014] Furthermore, the lower pressure frame is provided with two threaded holes, and the lead screw shaft is provided with external threads.

[0015] Furthermore, the top plane width of the ejector is the same as the thickness of the molded phone case.

[0016] The beneficial effects of this invention compared with the prior art are: (1) This invention can realize the continuous operation of a series of actions such as stirring, injection, cooling and discharge of injection molding raw materials, and realize the combination of multiple actions through a power source; (2) The upper mold device set in this invention stirs the injection molding raw materials when it descends, which can effectively prevent the injection molding raw materials from solidifying and affecting the injection effect. When the upper mold and the lower mold are connected, the injection action is automatically performed; (3) The cooling device set in this invention rapidly cools the upper mold and the lower mold simultaneously after the mobile phone case is injection molded, to prevent sticking and facilitate the removal of the mobile phone case; (4) The ejection device set in this invention automatically removes the molded mobile phone case with the action of the upper mold device. Before the next mobile phone case is injection molded, the ejection device of the previous injection completed mobile phone case is collected. (5) This invention uses injection molding to automatically produce mobile phone cases in batches, which has high production efficiency and automatically collects and feeds materials. The whole process does not require manual intervention and has a high degree of automation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 .

[0018] Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 2 .

[0019] Figure 3 This is a schematic diagram of the overall structure of the present invention. Figure 3 .

[0020] Figure 4 This is a schematic diagram of the upper mold device of the present invention. Figure 1 .

[0021] Figure 5 This is a schematic diagram of the upper mold device of the present invention. Figure 2 .

[0022] Figure 6 This is a schematic diagram of the device for launching the invention. Figure 1 .

[0023] Figure 7 This is a schematic diagram of the device structure for launching the invention. Figure 2 .

[0024] Figure 8 This is a schematic diagram of the lower mold device of the present invention.

[0025] Figure 9 This is a schematic diagram of the structure of the spring inside the lower mold device of the present invention.

[0026] Figure 10 This is a schematic diagram of the structure of the lifting seat of the lower mold device of the present invention.

[0027] Figure 11 This is a schematic diagram of the cooling device structure of the present invention. Figure 1 .

[0028] Figure 12 This is a schematic diagram of the cooling device structure of the present invention. Figure 2 .

[0029] Reference numerals: 1-Outer shell; 2-Extraction box; 301-Lower pressure plate; 302-Column; 303-Mixing tank; 304-Fixing rack; 305-Gear frame; 306-Intermediate gear; 307-Winding gear; 308-Winding thread; 309-Thread reel; 310-Mixing shaft; 311-Lower pressure frame; 312-Injection tube; 313-Injection plug; 314-Compression spring; 315-Upper mold; 316-Upper mold groove; 317-Connecting plate; 401-Fixing step block; 402-Triangle frame; 403-Push plate; 404-Outer expansion plate; 405-Return spring; 406-Sliding column; 407-Compression spring; 501-Fixing plate; 502-Motor; 503-Motor wheel; 504-Transmission belt; 505- Side wheel; 506-Screw shaft; 507-Shaft wheel; 508-Connecting belt; 509-Gear shaft; 510-Straight bevel gear; 511-Side bevel gear; 512-Long shaft; 513-Transmission wheel; 514-Output belt; 515-Lower block; 516-Side sliding column; 517-Downward pressure spring; 518-Inner column; 519-Outer column; 520-Lower mold; 521-Lower mold body; 522-Ejection frame; 523-Molded mobile phone case; 524-Inner spring; 525-Bottom spring; 526-Base plate; 527-Lifting seat; 601-Cold water tank; 602-Upper water inlet; 603-Lower water inlet; 604-Lower water outlet; 605-Upper water outlet; 606-Upper cooling pipe; 607-Lower cooling pipe; 7-Collection frame. Detailed Implementation

[0030] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0031] Example: Figure 1 , Figure 2 As shown, an injection molding machine for producing mobile phone casings includes a casing 1 placed on the ground. The casing 1 has an extraction box 2 and a collection frame 7. An upper mold device is installed inside the casing 1, including a column 302. A lower pressure plate 301 is slidably mounted on the column 302 and fixedly installed inside the casing 1. An ejection device is installed on the casing 1, including a tripod 402 slidably mounted to the casing 1. A lower mold device is installed on the casing 1, including a fixing plate 501 fixedly mounted on the casing 1. A cooling device is installed on the extraction box 2, including a cold water tank 601 fixedly mounted on the extraction box 2. The upper mold device is used to stir the material and cooperate with the lower mold device to form the mobile phone casing. The lower mold device is used to cooperate with the upper mold device to form the mobile phone casing. The ejection device is used to push the formed mobile phone casing into the collection frame 7. The cooling device is used to cool the injection-molded mobile phone casing.

[0032] The raw materials are put into the upper mold device for stirring, and the phone case is formed by the cooperation of the upper and lower molds. The formed phone case is cooled by the cooling device, and then the formed phone case is pushed into the collection box 7 by the ejection device.

[0033] like Figure 3 , Figure 4 , Figure 5 As shown, the upper mold device includes a fixed rack 304 fixedly installed on the inner wall of the outer casing 1, a mixing tank 303 fixedly installed on the lower pressure plate 301, a gear frame 305 fixedly installed on the mixing tank 303, an intermediate gear 306 and a winding gear 307 rotatably installed on the gear frame 305, the fixed rack 304 meshes with the intermediate gear 306, the intermediate gear 306 meshes with the winding gear 307, a stirring shaft 310 rotatably installed inside the mixing tank 303, a spool 309 fixedly installed on the stirring shaft 310, and the spool 309 and the winding gear... 307 is wrapped with a winding line 308. An injection tube 312 is fixedly installed at the bottom of the mixing tank 303. An upper mold 315 is fixedly installed at the bottom of the lower pressure plate 301. The other end of the injection tube 312 is fixedly installed with the upper mold 315. An injection plug 313 is fixedly installed on the lower pressure plate 301. A lower pressure frame 311 is fixedly installed on the top of the injection plug 313. A compression spring 314 is provided between the lower pressure frame 311 and the lower pressure plate 301. A connecting plate 317 is fixedly installed at the bottom of the lower pressure plate 301. An upper mold groove 316 is provided on the upper mold 315.

[0034] Driven by the lower mold device, the lower pressure frame 311 descends. The descent of the lower pressure frame 311 first causes the lower pressure plate 301 to descend along the column 302. During the descent of the lower pressure plate 301, the fixed rack 304 drives the intermediate gear 306 and the winding gear 307 to rotate, thereby driving the spool 309 and the stirring shaft 310 to rotate and stir the raw materials in the mixing tank 303 to prevent the raw materials from condensing. After the lower pressure plate 301 descends with the upper mold 315 and fits into the lower mold device, the lower pressure frame 311 continues to descend and squeezes the injection plug 313 to squeeze the raw materials flowing out of the injection tube 312 into the upper mold 315 and the lower mold device. The compression spring 314 is compressed to perform the injection molding action.

[0035] like Figure 6 , Figure 7 As shown, the ejection device includes a fixed ladder block 401 fixedly installed on the outer shell 1, a push plate 403 fixedly installed on the tripod 402, a return spring 405 provided between the tripod 402 and the outer shell 1, a sliding column 406 slidably installed on the connecting plate 317, an expansion plate 404 fixedly installed on the sliding column 406, and a compression spring 407 provided between the expansion plate 404 and the connecting plate 317.

[0036] When the lower pressure plate 301 begins to descend, it will drive the outer expansion plate 404 to descend simultaneously. The outer expansion plate 404 pushes out the tripod 402 and the push plate 403. The push plate 403 pushes out the previously formed mobile phone case from the lower mold device. At this time, the return spring 405 is stretched. When the outer expansion plate 404 continues to descend and aligns with the fixed step block 401, the outer expansion plate 404 will move to both sides under the action of the fixed step block 401. At this time, the sliding column 406 slides in the connecting plate 317, the compression spring 407 is squeezed, and the outer expansion plate 404 disengages from the tripod 402. At this time, the tripod 402 and the push plate 403 return to their initial positions under the rebound action of the return spring 405.

[0037] like Figure 3 , Figure 8 , Figure 9 , Figure 10As shown, the lower mold device includes a motor 502 fixedly mounted on the housing 1. A motor wheel 503 is fixedly mounted on the output end of the motor 502. A lead screw shaft 506 is rotatably mounted on the fixed plate 501. A side wheel 505 is fixedly mounted on the lead screw shaft 506. A transmission belt 504 is wound around the motor wheel 503 and the side wheel 505. A shaft wheel 507 is fixedly mounted on the lead screw shaft 506. A gear shaft 509 is rotatably mounted on the fixed plate 501. The gear shaft 509 and the shaft wheel 507... A connecting belt 508 is wrapped around the gear shaft 509. A bevel gear 510 is fixedly mounted on the gear shaft 509. A long shaft 512 and a transmission wheel 513 are rotatably mounted on the fixed plate 501. A side bevel gear 511 is fixedly mounted on the long shaft 512 and meshes with the bevel gear 510. An output belt 514 is wrapped around the long shaft 512 and the transmission wheel 513. A lower block 515 is fixedly mounted on the fixed plate 501, and a side sliding column 516 is fixedly mounted on the lower block 515. The side sliding column 516 is slidably installed with the lower pressure plate 301. A downward pressure spring 517 is provided between the lower pressure plate 301 and the lower block 515. An outer column 519 is fixedly installed at the bottom of the lower pressure plate 301. An inner column 518 is slidably installed on the outer column 519. The inner column 518 is slidably installed with the lower block 515. A base plate 526 is fixedly installed at the bottom of the inner column 518. A lifting seat 527 is fixedly installed on the base plate 526. An ejector frame 522 is fixedly installed on the lifting seat 527. The frame 522 is slidably installed with the lower block 515. A bottom spring 525 is provided between the base plate 526 and the lower block 515. A lower mold 520 is fixedly installed on the lower block 515. The ejector frame 522 is slidably installed with the lower mold 520. A lower mold body 521 is fixedly installed on the lower mold 520. A molded mobile phone case 523 is placed on the ejector frame 522. An inner spring 524 is provided between the inner column 518 and the outer column 519. The lead screw shaft 506 forms a threaded engagement with the lower pressure frame 311.

[0038] The rotation of motor 502 drives motor wheel 503 to rotate, which in turn drives side wheel 505 and lead screw shaft 506 to rotate via transmission belt 504. This causes the lower pressure frame 311 to move downward. The descent of the lower pressure frame 311 first causes the lower pressure plate 301 to descend along the side sliding column 516. At the same time, the lower pressure plate 301 carries the outer column 519 down, which in turn drives the inner column 518 down, thereby causing the base plate 526 and ejector frame 522 to descend. This causes the upper edge of the ejector frame 522 to be flush with the surface of the lower mold 520. At this point, the push plate 403 pushes out the molded phone case 523. Subsequently, the outer column 519 continues to descend, causing the inner spring to... 524 is compressed, but the ejector 522 no longer descends. The lower pressure plate 301 and the upper mold 315 continue to descend. Then the upper mold 315 fits with the lower mold 520. Through the cooperation of the lower mold body 521 and the upper mold groove 316, the lower pressure plate 311 continues to descend, squeezing the injection plug 313 to squeeze the raw material flowing out of the injection tube 312 into the space between the upper mold 315 and the upper mold groove 316 for injection molding. At the same time, the lead screw shaft 506 rotates, driving the long shaft 512 to rotate through the connecting belt 508, thereby driving the output belt 514 to rotate, transporting the molded mobile phone case 523 pushed out by the push plate 403 into the collection frame 7.

[0039] After one injection molding process is completed, the motor 502 reverses and drives the lower pressure frame 311 to rise. At this time, the lead screw shaft 506 rotates and drives the lower pressure frame 311 to rise. First, under the action of the compression spring 314 resetting, the injection plug 313 returns to the initial position. Then, the lower pressure frame 311 rises and drives the lower pressure plate 301 to rise, thereby driving the outer column 519 to rise. The inner spring 524 gradually returns to the unforced state. Then, the outer column 519 drives the inner column 518 to rise, thereby driving the base plate 526 and the ejector 522 to rise. The ejector 522 rises and pushes out the molded mobile phone case. At the same time, the lower pressure spring 517 resets and cooperates with the lower pressure plate 301 to return to the initial position. At the same time, the lower pressure plate 301 drives the outer expansion plate 404 to rise. When the outer expansion plate 404 is freed from the position restriction of the fixed ladder block 401 and reaches above the tripod 402, under the action of the spring 407, the outer expansion plate 404 returns to the initial position.

[0040] like Figure 11 , Figure 12 As shown, the cooling device includes an upper inlet 602 and a lower inlet 603 fixedly installed on the cold water tank 601. An upper cooling pipe 606 is fixedly installed on the upper inlet 602, and an upper outlet 605 is fixedly installed on the upper cooling pipe 606. A lower cooling pipe 607 is fixedly installed on the lower inlet 603, and a lower outlet 604 is fixedly installed on the lower cooling pipe 607. The upper cooling pipe 606 is fixedly installed with the upper mold 315, and the lower cooling pipe 607 is fixedly installed with the lower mold 520.

[0041] Cooling water is output from the cold water tank 601, flows through the upper inlet 602 into the upper cooling pipe 606, and flows out through the upper outlet 605. At the same time, cooling water flows through the lower cooling pipe 607 and flows out through the lower outlet 604, which cools the upper mold 315 and the lower mold 520 after injection molding, so that the molded mobile phone case cools down and solidifies quickly.

[0042] like Figure 3 , Figure 4 , Figure 8 As shown, the lower pressure frame 311 is provided with two threaded holes, and the lead screw shaft 506 is provided with external threads.

[0043] like Figure 8 , Figure 9 , Figure 10 As shown, the top plane width of the ejector 522 is the same as the thickness of the molded phone case 523.

[0044] Working principle: The injection molding material is placed in the mixing tank 303. The motor 502 rotates, driving the motor wheel 503 to rotate. Through the transmission belt 504, the side wheel 505 and the lead screw shaft 506 rotate, thereby driving the lower pressure frame 311 to move downward. The descent of the lower pressure frame 311 first drives the lower pressure plate 301 to descend along the side sliding column 516. The descent of the lower pressure frame 311 first drives the lower pressure plate 301 to descend along the column 302. During the descent of the lower pressure plate 301, the fixed rack 304 drives the intermediate gear 306 and the wound gear 307 to rotate, thereby driving the filament wheel 309 and the mixing shaft 310 to rotate, stirring the material in the mixing tank 303 and preventing the material from solidifying. After the lower pressure plate 301, carrying the upper mold 315, descends and fits into the lower mold device, the lower pressure plate 301 simultaneously drives the outer column 519 to descend. The outer column 519 drives the inner column 518 to descend, thereby driving the bottom plate 526 and the ejector frame 522 to descend, so that the ejector frame 522... The upper edge of the mold 511 is flush with the surface of the lower mold 520. At this time, the push plate 403 pushes out the molded phone case 523. Then, the outer column 519 continues to descend, which will compress the inner spring 524. However, the ejector 522 will not continue to descend. The lower pressure plate 301 and the upper mold 315 continue to descend. Then, the upper mold 315 fits with the lower mold 520. Through the cooperation of the lower mold body 521 and the upper mold groove 316, the lower pressure frame 311 continues to descend, which will squeeze the injection plug 313 and squeeze the raw material flowing out from the injection tube 312 into the space between the upper mold 315 and the upper mold groove 316 to perform the injection molding action. During the injection molding process, the cooling water output from the cold water tank 601 flows through the upper inlet 602 into the upper cooling pipe 606 and flows out through the upper outlet 605. At the same time, the cooling water flows through the lower cooling pipe 607 and flows out through the lower outlet 604 to cool the upper mold 315 and the lower mold 520 after the injection molding is completed, so that the molded phone case cools down and is formed quickly. As the lower pressure plate 301 begins to descend, it simultaneously drives the outer expansion plate 404 to descend as well. The outer expansion plate 404 pushes out the tripod 402 and the push plate 403, and pushes out the previously formed phone case from the lower mold device via the push plate 403. At this time, the return spring 405 is stretched. As the outer expansion plate 404 continues to descend and aligns with the fixed ladder block 401, the outer expansion plate 404 moves to both sides under the action of the fixed ladder block 401. At this time, the sliding column 406 slides in the connecting plate 317, and the compression spring 407 is squeezed, causing the outer expansion plate 404 to disengage from the tripod 402. The tripod 402 and the push plate 403 then return to their initial positions under the rebound action of the return spring 405. Simultaneously, the rotation of the lead screw shaft 506 drives the long shaft 512 to rotate via the connecting belt 508, thereby driving the output belt 514 to rotate, transporting the formed phone case 523 pushed out by the push plate 403 into the collection frame 7.After one injection molding process is completed, the motor 502 reverses and drives the lower pressure frame 311 to rise. At this time, the lead screw shaft 506 rotates and drives the lower pressure frame 311 to rise. First, under the action of the compression spring 314 resetting, the injection plug 313 returns to the initial position. Then, the lower pressure frame 311 rises and drives the lower pressure plate 301 to rise, thereby driving the outer column 519 to rise. The inner spring 524 gradually returns to the unforced state. Then, the outer column 519 drives the inner column 518 to rise, thereby driving the base plate 526 and the ejector 522 to rise. The ejector 522 rises and pushes out the molded mobile phone case. At the same time, the lower pressure spring 517 resets and cooperates with the lower pressure plate 301 to return to the initial position. At the same time, the lower pressure plate 301 drives the outer expansion plate 404 to rise. When the outer expansion plate 404 is freed from the position restriction of the fixed ladder block 401 and reaches above the tripod 402, under the action of the spring 407, the outer expansion plate 404 returns to the initial position.

Claims

1. An injection molding equipment for producing mobile phone casings, comprising a casing (1) placed on the ground, characterized in that: The outer shell (1) is provided with a pull-out box (2) and a collection frame (7). An upper mold device is provided inside the outer shell (1). The upper mold device includes a column (302). A lower pressure plate (301) is slidably installed on the column (302). The column (302) is fixedly installed inside the outer shell (1). An ejection device is provided on the outer shell (1). The ejection device includes a tripod (402). The tripod (402) is slidably installed with the outer shell (1). A lower mold device is provided on the outer shell (1). The lower mold device includes a fixing plate (50). 1) The fixing plate (501) is fixedly installed on the outer shell (1). The extraction box (2) is equipped with a cooling device. The cooling device includes a cold water tank (601). The cold water tank (601) is fixedly installed on the extraction box (2). The upper mold device is used to stir the material and cooperate with the lower mold device to form the mobile phone case. The lower mold device is used to cooperate with the upper mold device to form the mobile phone case. The ejection device is used to push the formed mobile phone case into the collection frame (7). The cooling device is used to cool the injection-molded mobile phone case. The upper mold device includes a fixed rack (304) fixedly installed on the inner wall of the outer shell (1), a mixing tank (303) fixedly installed on the lower pressure plate (301), a gear frame (305) fixedly installed on the mixing tank (303), an intermediate gear (306) and a winding gear (307) rotatably installed on the gear frame (305), the fixed rack (304) meshing with the intermediate gear (306), the intermediate gear (306) meshing with the winding gear (307), a stirring shaft (310) rotatably installed inside the mixing tank (303), a spool (309) fixedly installed on the stirring shaft (310), and a spool (309) and a winding gear (307) rotatably installed inside the mixing tank (303). 307) The outer part is wrapped with a winding line (308). The bottom of the mixing tank (303) is fixedly installed with an injection tube (312). The bottom of the lower pressure plate (301) is fixedly installed with an upper mold (315). The other end of the injection tube (312) is fixedly installed with the upper mold (315). An injection plug (313) is fixedly installed on the lower pressure plate (301). A lower pressure frame (311) is fixedly installed on the top of the injection plug (313). A compression spring (314) is provided between the lower pressure frame (311) and the lower pressure plate (301). A connecting plate (317) is fixedly installed on the bottom of the lower pressure plate (301). An upper mold groove (316) is provided on the upper mold (315). Driven by the lower mold device, the lower pressure frame (311) is lowered. The lower pressure frame (311) first drives the lower pressure plate (301) to descend along the column (302). During the descent of the lower pressure plate (301), the fixed rack (304) drives the intermediate gear (306) and the winding gear (307) to rotate, thereby driving the spool (309) and the stirring shaft (310) to rotate to stir the raw material in the mixing tank (303) and prevent the raw material from condensing. After the lower pressure plate (301) lowers with the upper mold (315) and fits with the lower mold device, the lower pressure frame (311) continues to descend and squeezes the injection plug (313) to squeeze the raw material flowing out from the injection tube (312) into the upper mold (315) and the lower mold device. The compression spring (314) is compressed to perform the injection action.

2. The injection molding equipment for producing mobile phone casings according to claim 1, characterized in that: The ejection device includes a fixed step block (401) fixedly installed on the outer shell (1), a push plate (403) fixedly installed on the tripod (402), a return spring (405) provided between the tripod (402) and the outer shell (1), a sliding column (406) slidably installed on the connecting plate (317), an expansion plate (404) fixedly installed on the sliding column (406), and a compression spring (407) provided between the expansion plate (404) and the connecting plate (317).

3. The injection molding equipment for producing mobile phone casings according to claim 1, characterized in that: The lower mold device includes a motor (502) fixedly mounted on the outer casing (1), a motor wheel (503) fixedly mounted on the output end of the motor (502), a lead screw shaft (506) rotatably mounted on the fixed plate (501), a side wheel (505) fixedly mounted on the lead screw shaft (506), a transmission belt (504) wrapped around the motor wheel (503) and the side wheel (505), a shaft wheel (507) fixedly mounted on the lead screw shaft (506), a gear shaft (509) rotatably mounted on the fixed plate (501), and a gear shaft (509) and a shaft wheel (507) rotatably mounted on the fixed plate (501). 7) A connecting belt (508) is wrapped around the outside. A bevel gear (510) is fixedly installed on the gear shaft (509). A long shaft (512) and a transmission wheel (513) are rotatably installed on the fixed plate (501). A side bevel gear (511) is fixedly installed on the long shaft (512). The side bevel gear (511) meshes with the bevel gear (510). An output belt (514) is wrapped around the long shaft (512) and the transmission wheel (513). A lower block (515) is fixedly installed on the fixed plate (501). A side sliding column (516) is fixedly installed on the lower block (515). The side sliding column (516) is slidably installed with the lower pressure plate (301). A downward pressure spring (517) is provided between the lower pressure plate (301) and the lower block (515). An outer column (519) is fixedly installed at the bottom of the lower pressure plate (301). An inner column (518) is slidably installed on the outer column (519). The inner column (518) is slidably installed with the lower block (515). A base plate (526) is fixedly installed at the bottom of the inner column (518). A lifting seat (527) is fixedly installed on the base plate (526). An ejector frame (522) is fixedly installed on the lifting seat (527). 522) is slidably installed with the lower block (515), and a bottom spring (525) is provided between the bottom plate (526) and the lower block (515). A lower mold (520) is fixedly installed on the lower block (515). The ejector (522) is slidably installed with the lower mold (520). A lower mold body (521) is fixedly installed on the lower mold (520). A molded mobile phone shell (523) is placed on the ejector (522). An inner spring (524) is provided between the inner column (518) and the outer column (519). The lead screw shaft (506) and the lower pressure frame (311) form a threaded engagement.

4. The injection molding equipment for producing mobile phone casings according to claim 1, characterized in that: The cooling device includes an upper inlet (602) and a lower inlet (603) fixedly installed on a cold water tank (601). An upper cooling pipe (606) is fixedly installed on the upper inlet (602), and an upper outlet (605) is fixedly installed on the upper cooling pipe (606). A lower cooling pipe (607) is fixedly installed on the lower inlet (603), and a lower outlet (604) is fixedly installed on the lower cooling pipe (607). The upper cooling pipe (606) is fixedly installed with the upper mold (315), and the lower cooling pipe (607) is fixedly installed with the lower mold (520).

5. The injection molding equipment for producing mobile phone casings according to claim 3, characterized in that: The lower pressure frame (311) is provided with two threaded holes, and the lead screw shaft (506) is provided with external threads.

6. The injection molding equipment for producing mobile phone casings according to claim 3, characterized in that: The top plane width of the ejector (522) is the same as the thickness of the molded phone case (523).

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