Plastic injection molding machine

Abstract

The invention discloses a plastic injection molding machine, and belongs to the field of plastic injection molding. A plastic injection molding machine comprises a machining table, a storage tank is fixedly connected to the top of the machining table, a lower mold disc is rotatably connected to the top of the machining table, multiple sets of injection molding grooves are formed in the top of the lower mold disc at equal intervals, and the plastic injection molding machine further comprises an injection molding module arranged on the machining table and used for achieving continuous injection molding machining; according to the invention, the core rod is lifted upwards through gas thrust generated by the repulsion effect of the fixed magnetic plate and the movable magnetic plate, so that the stirring paddle rotates by cooperating with the sliding effect of the friction plate and the friction wheel, the stirring and mixing effects are effectively improved, and after the lifting effect on the core rod is relieved, the stirring paddle rotates under the action of gravity, so that the stirring and mixing effects are improved. And the friction plate can quickly fall down along with the core rod to drive the stirring paddle to rotate again, and the stirring paddle is vibrated, so that bubbles in the plastic slurry are discharged upwards, and the quality of an injection product is improved.

Description

Technical Field

[0001] The invention relates to the technical field of plastic injection molding, in particular to a plastic injection molding machine. Background Art

[0002] Plastic injection molding machine is a mechanical device used to manufacture plastic products. It injects molten plastic into a mold and forms a product of the desired shape after cooling and solidification. Injection molding machines are widely used in various industries, and the products produced range from daily necessities such as bottles, toys, and mobile phone cases to industrial parts such as electrical components and auto parts.

[0003] At present, when plastic injection molding is carried out, the plastic slurry in the storage barrel may be unevenly dispersed during continuous injection molding, and the plastic slurry contains a certain amount of bubbles, which may cause hollowing defects in the injection molded product, thereby reducing the injection molding quality. Therefore, a plastic injection molding machine is proposed. Summary of the invention

[0004] The purpose of the present invention is to solve the problem that in the prior art, when continuous injection molding is carried out, there will be uneven dispersion inside the plastic injection molding, and a certain amount of bubbles will be contained in the plastic slurry, which will cause hollow defects in the injection molded product, thereby reducing the injection molding quality. A plastic injection molding machine is proposed.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A plastic injection molding machine comprises a processing table, the top of which is fixedly connected to a storage tank, the top of which is rotatably connected to a lower mold plate, a plurality of injection grooves are arranged at equal intervals on the top of the lower mold plate, and further comprises: an injection module, which is arranged on the processing table and is used to realize continuous injection molding; a discharge assembly, which is arranged in the lower mold plate and is used to eject the injection molded product formed in the injection groove; and a stirring assembly, which is arranged in the storage tank and is used to evenly mix the injection slurry.

[0007] To improve the injection molding efficiency, preferably, the injection molding module includes an upper mold plate. A driven shaft is rotatably connected to the top of the processing table, and the upper mold plate is fixed to the outer wall of the driven shaft. A closing plate is rotatably connected to the outer wall of the driven shaft. The bottom of the closing plate is fixedly connected to the top of the processing table. The top of the closing plate fits against the bottom of the upper mold plate and is slidably connected thereto. The bottom of the closing plate fits against the top of the lower mold plate and is slidably connected thereto. Storage grooves are equidistantly formed in the upper mold plate. A material discharging groove is formed in the closing plate. The upper mold plate and the lower mold plate are alternately overlapped with each other, and the storage grooves, the material discharging grooves, and the injection molding grooves at the overlapping positions are vertically communicated with each other. A guide ring is fixedly connected and communicated between the tops of multiple groups of the storage grooves. A rotating ring is rotatably connected to the top of the guide ring. Guide pipes are fixedly connected at equal intervals to the top of the rotating ring, and the top ends of the guide pipes are communicated with the bottom of the inner cavity of the storage tank.

[0008] Furthermore, a linkage chamber is formed in the processing table. The bottom ends of the driven shaft and the rotating shaft of the lower mold plate both penetrate into the linkage chamber and are传动连接 by a pulley group.

[0009] To facilitate demolding, preferably, the unloading assembly includes a top material box. The top material box is fixed to the bottom of the lower mold plate and is located directly below each injection molding groove. A moving magnetic plate is slidably connected in the top material box. A return spring is fixedly connected between the top of the moving magnetic plate and the inner cavity of the top material box. Top material plates are fixedly connected to both sides of the top of the moving magnetic plate. The top of the top material plate penetrates into the injection molding groove, and the top of the top material plate is flush with the bottom of the injection molding groove in the non-loaded state. A fixed magnetic plate is fixedly connected to the top of the processing table, and the fixed magnetic plate and the moving magnetic plate repel each other magnetically.

[0010] To improve the use effect of the injection molding slurry, preferably, the stirring assembly includes a stirring chamber. The driven shaft penetrates upward through the storage tank and extends above it. A servo motor is fixedly connected to the top of the storage tank. The output shaft of the servo motor is fixedly connected to the top end of the driven shaft. The stirring chamber is fixed to the outer wall of the driven shaft. Stirring paddles are rotatably connected to both sides of the stirring chamber. The rotating shaft of the stirring paddle penetrates into the stirring chamber and is fixedly connected to a friction wheel. A hollow cavity is formed in the driven shaft. A core rod is slidably connected in the hollow cavity. A friction plate is fixedly connected to the outer wall of the core rod located in the stirring chamber, and the friction plate is arranged in a "冂" shape.

[0011] It should be noted that in the translation of "传动连接" in , the specific accurate expression may need to be adjusted according to the actual mechanical transmission term, and the above is a general translation for reference.Furthermore, a piston ring box is fixedly connected to the top of the processing table, and the piston ring box is sleeved on the outside of the driven shaft, and the axis of the piston ring box and the driven shaft coincide with each other, and a piston ring plate is slidably connected to the piston ring box, and the top of the piston ring plate is fixedly connected to the linkage rod, and a lifting groove is provided on the bottom of the outer wall of the driven shaft, and a horizontal push piece is slidably connected in the lifting groove, the bottom end of the core rod is fixedly connected to the top of the horizontal push piece, and the top of the linkage rod is fixedly connected to the outer wall of the horizontal push piece, and an air guide pipe is fixed on and connected to the outer wall of the piston ring box, and the top of the air guide pipe is fixed and connected to a sealing ring, an air guide ring is slidably connected in the sealing ring, and the air guide ring is fixed on the outer wall of the lower mold plate, and an air guide groove is provided on the side wall of the top material box, and the air guide groove passes through the air guide ring and is connected with the inner cavity of the sealing ring.

[0012] In order to improve the cooling effect, preferably, an inner cold groove and an outer cold groove are opened in the lower mold plate, and the inner cold groove and the outer cold groove are respectively wrapped at the inner and outer side walls of each group of injection grooves, and the inner cold groove and the outer cold groove are interconnected. A liquid storage tank is opened in the middle of the lower mold plate, and the liquid storage tank and the outer cold groove are connected. Multiple groups of external cold grooves are interconnected, and a positioning shaft is fixedly connected in the liquid storage tank, and a liquid stirring impeller is fixedly connected to the outer wall of the positioning shaft.

[0013] In order to improve the energy-saving effect, preferably, the top end of the driven shaft is rotatably connected to an air storage ring, the top of the air storage ring is fixedly connected to the inner top of the servo motor mounting frame, the air storage ring is communicated with the inner cavity of the hollow cavity, the top of the positioning shaft is fixed on the outer wall of the air storage ring, a steam ring is fixedly connected to the outer wall of the positioning shaft, steam pipes are fixedly connected to both sides of the bottom of the steam ring, the bottom end of the steam pipe is communicated with the inner cavity of the liquid storage tank, and the steam ring is communicated with the inner cavity of the positioning shaft, and the top end of the inner cavity of the positioning shaft is communicated with the inner cavity of the air storage ring, the top end of the core rod is fixedly connected to a sealing slider, and a pressure relief hole is opened on the upper part of the outer wall of the driven shaft, and the pressure relief hole is communicated with the inner cavity of the hollow cavity.

[0014] In order to facilitate the addition of coolant, preferably, a water injection pipe is fixed and connected to the outer wall of the steam ring, and a sealing plug is fixedly connected to the top of the water injection pipe.

[0015] In order to improve the demoulding quality, preferably, a demoulding agent tank is fixedly connected to the top of the processing table, the bottom end of the demoulding agent tank is fixed and connected to an atomizing nozzle, and a solenoid valve is arranged in the atomizing nozzle.

[0016] Compared with the prior art, the present invention provides a plastic injection molding machine, which has the following beneficial effects:

[0017] 1. The plastic injection molding machine uses the gas thrust generated by the repulsive action of the fixed magnetic plate and the moving magnetic plate to lift the core rod upward, so as to cooperate with the sliding action of the friction plate and the friction wheel to make the stirring paddle rotate, thereby improving the stirring and mixing effect. When the lifting action on the core rod is released, under the action of gravity, the friction plate will fall rapidly with the core rod, and once again drive the stirring paddle to rotate, and make the stirring paddle vibrate, so that the bubbles in the plastic slurry are discharged upward, thereby improving the quality of the injection molded product.

[0018] 2. The plastic injection molding machine stirs the coolant in the liquid storage tank through the stirring impeller, so that the water-cooling liquids in various places intersect and flow with each other, thereby improving the uniform cooling effect, avoiding cracks caused by uneven cooling, and effectively improving the quality of injection molded products; and the heat-absorbing and evaporated gas is introduced into the top cavity of the hollow cavity for energy storage, thereby accelerating the falling speed and impact of the core rod, ensuring the rotation and vibration effect of the stirring paddle.

[0019] 3. The plastic injection molding machine, through the cooperation between the upper mold plate, the closing plate and the lower mold plate, enables the plastic slurry to fill the injection groove by itself under the action of gravity, thereby realizing continuous injection molding production and effectively improving the injection molding efficiency; and cooperates with the repulsive effect of the fixed magnetic plate and the moving magnetic plate to achieve self-demolding, further improving the injection molding production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of a plastic injection molding machine proposed by the present invention;

[0021] Figure 2 A schematic diagram of a front view and a half-section structure of a plastic injection molding machine proposed by the present invention;

[0022] Figure 3 A plastic injection molding machine proposed by the present invention Figure 2 A schematic diagram of the enlarged structure of the middle A area;

[0023] Figure 4 A plastic injection molding machine proposed by the present invention Figure 2 Schematic diagram of the enlarged structure of the middle B area;

[0024] Figure 5 A plastic injection molding machine proposed by the present invention Figure 2 Schematic diagram of the enlarged structure of the middle C area;

[0025] Figure 6 A side view half-section structure schematic diagram of a plastic injection molding machine proposed by the present invention;

[0026] Figure 7 A structure of a plastic injection molding machine proposed by the present invention Figure 6 The enlarged structural diagram of the D area in the middle;

[0027] Figure 8 This is a schematic diagram of the internal structure of a ejector box of a plastic injection molding machine proposed by the present invention;

[0028] Fig. 9 The present invention is a schematic diagram of the internal structure of a liquid storage tank of a plastic injection molding machine.

[0029] In the figure: 1, processing table; 2, material storage tank; 3, lower mold plate; 31, injection groove; 4, upper mold plate; 41, driven shaft; 411, hollow cavity; 412, lifting groove; 413, horizontal push piece; 414, pressure discharge hole; 42, closing plate; 421, discharge groove; 43, material storage groove; 44, guide ring; 441, rotating ring; 442, guide pipe; 45, linkage bin; 451, pulley group; 5, ejector box; 51, moving magnetic plate; 52, reset spring; 53, ejector plate; 54, fixed magnetic plate; 6, stirring bin; 61. servo motor; 62. stirring paddle; 621. friction wheel; 63. core rod; 631. friction plate; 632. sealing slider; 64. piston ring box; 641. piston ring plate; 642. linkage rod; 65. air guide pipe; 651. sealing ring; 652. air guide ring; 66. air guide groove; 7. inner cooling groove; 71. outer cooling groove; 72. liquid storage tank; 73. positioning shaft; 731. stirring impeller; 8. air storage ring; 81. steam ring; 82. steam pipe; 83. water injection pipe; 9. release agent tank; 91. atomizing nozzle. DETAILED DESCRIPTION

[0030] 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.

[0031] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0032] Example:

[0033] Reference Figure 1-Figure 9A plastic injection molding machine includes a processing table 1, a storage tank 2 is fixedly connected to the top of the processing table 1, a lower mold plate 3 is rotatably connected to the top of the processing table 1, and a plurality of injection grooves 31 are arranged at equal intervals on the top of the lower mold plate 3. It also includes: an injection module, which is arranged on the processing table 1 and is used to realize continuous injection molding; a discharge assembly, which is arranged in the lower mold plate 3 and is used to eject the injection molded product formed in the injection groove 31; a stirring assembly, which is arranged in the storage tank 2 and is used to evenly mix the injection slurry.

[0034] Reference Figure 1-Figure 3 and Figure 6 The injection molding module comprises an upper mold plate 4, a driven shaft 41 is rotatably connected to the top of the processing table 1, the upper mold plate 4 is fixed on the outer wall of the driven shaft 41, a closing plate 42 is rotatably connected to the outer wall of the driven shaft 41, the bottom of the closing plate 42 is fixedly connected to the top of the processing table 1, the top of the closing plate 42 is attached to the bottom of the upper mold plate 4 and is slidably connected thereto, the bottom of the closing plate 42 is attached to the top of the lower mold plate 3 and is slidably connected thereto, storage grooves 43 are provided in the upper mold plate 4 at equal intervals, a discharge groove 421 is provided on the closing plate 42, and the upper mold plate 4 and the lower mold plate 3 are connected to each other. The tops of the multiple groups of storage troughs 43 are fixed and connected with a guide ring 44, and the top of the guide ring 44 is rotatably connected with a rotating ring 441, and the top of the rotating ring 441 is fixedly connected with a guide pipe 442 at equal intervals, and the top of the guide pipe 442 is connected to the bottom of the inner cavity of the storage tank 2; a linkage warehouse 45 is opened in the processing table 1, and the bottom ends of the driven shaft 41 and the rotating shaft of the lower mold plate 3 are both penetrated into the linkage warehouse 45 and are connected through a pulley group 451.

[0035] By setting the above structure, the plastic slurry is added into the storage tank 2. Under the action of gravity, the slurry in the storage tank 2 will fall into the storage tank 43 along the guide tube 442 and the guide ring 44. Then, the servo motor 61 is turned on to drive the driven shaft 41 to rotate, thereby driving the upper mold plate 4 to rotate. At the same time, the transmission effect of the pulley group 451 is used to make the lower mold plate 3 rotate synchronously. When the storage tank 43 on the upper mold plate 4 moves to the top of the discharge tank 421, the injection groove 31 on the lower mold plate 3 also rotates. It just moves to the bottom of the discharge trough 421 (here is the first workstation). At this time, under the action of gravity, the plastic slurry will fill the injection groove 31 by itself. Then, when the storage trough 43 and the injection groove 31 are separated from the communicating area, the plastic slurry is smoothed and compacted in the injection groove 31 under the action of the fitting rotation of the lower mold plate 3 and the closing plate 42, which effectively improves the injection molding effect. Subsequently, a new set of storage troughs 43 and the injection groove 31 will be connected again, realizing continuous injection molding production and effectively improving the injection molding efficiency.

[0036] Reference Figure 2 and Figure 8 Among them, the unloading component includes a top box 5. The top box 5 is fixed to the bottom of the lower mold plate 3, and the top box 5 is located directly below each injection slot 31. A moving magnetic plate 51 is slidably connected in the top box 5. A return spring 52 is fixedly connected between the top of the moving magnetic plate 51 and the inner cavity of the top box 5. Both sides of the top of the moving magnetic plate 51 are fixedly connected with top plates 53. The top of the top plate 53 penetrates into the injection slot 31, and the top of the top plate 53 in the non-loaded state is flush with the bottom of the injection slot 31. A fixed magnetic plate 54 is fixedly connected to the top of the processing table 1, and the fixed magnetic plate 54 and the moving magnetic plate 51 repel each other magnetically.

[0037] Through the setting of the above structure, when the injection slot 31 filled with plastic slurry and shaped moves to the third station (directly opposite the first station), under the repulsive action of the fixed magnetic plate 54 and the moving magnetic plate 51, the moving magnetic plate 51 will drive the top plate 53 to move upward, so as to automatically eject the formed plastic product, and then the material is taken by manual or robotic arm, effectively improving the injection production efficiency.

[0038] Reference Figure 1-Figure 4 and Figure 7 Among them, the stirring component includes a stirring chamber 6. The driven shaft 41 penetrates upward through the storage tank 2 and extends above it. A servo motor 61 is fixedly connected to the top of the storage tank 2. The output shaft of the servo motor 61 is fixedly connected to the top end of the driven shaft 41. The stirring chamber 6 is fixed to the outer wall of the driven shaft 41. Stirring paddles 62 are rotatably connected to both sides of the stirring chamber 6. The rotating shaft of the stirring paddle 62 penetrates into the stirring chamber 6 and is fixedly connected with a friction wheel 621. A hollow cavity 411 is opened in the driven shaft 41. A core rod 63 is slidably connected in the hollow cavity 411. A friction plate 631 is fixedly connected to the outer wall of the core rod 63 located in the stirring chamber 6, and the friction plate 631 is arranged in a "冂" shape; a piston ring box 64 is fixedly connected to the top of the processing table 1. The piston ring box 64 is sleeved outside the driven shaft 41, and the piston ring box 64 coincides with the axis of the driven shaft 41. A piston ring plate 641 is slidably connected in the piston ring box 64. The top of the piston ring plate 641 is fixedly connected with a linkage rod 642. A lifting groove 412 is opened on the bottom outer wall of the driven shaft 41. A horizontal pushing member 413 is slidably connected in the lifting groove 412. The bottom end of the core rod 63 is fixedly connected to the top of the horizontal pushing member 413. The top end of the linkage rod 642 is fixedly connected to the outer wall of the horizontal pushing member 413. An air guide pipe 65 is fixedly connected and communicated with the outer wall of the piston ring box 64. The top end of the air guide pipe 65 is fixedly connected and communicated with a sealing ring 651. An air guide ring 652 is slidably connected in the sealing ring 651. The air guide ring 652 is fixed to the outer wall of the lower mold plate 3. An air guide groove 66 is opened on the side wall of the top box 5. The air guide groove 66 penetrates through the air guide ring 652 and is communicated with the inner cavity of the sealing ring 651.

[0039] By setting the above structure, when the driven shaft 41 rotates, the stirring paddle 62 in the storage tank 2 will also be driven to rotate, so as to stir and mix the plastic slurry in the storage tank 2, ensure the uniform distribution of the components in the plastic slurry, and improve the injection molding quality; at the same time, when the moving magnetic plate 51 moves upward, it will compress the gas in the top material box 5, and make this part of the gas enter the piston ring box 64 along the air guide groove 66, the air guide ring 652, the sealing ring 651 and the air guide pipe 65, so as to push the piston ring plate 641 to move upward, so as to use the linkage rod 642 and the horizontal push piece 413 to lift the core rod 63 upward, so that the friction plate 631 slides upward along the friction wheel 621, thereby driving the stirring paddle 62 to rotate, so that the stirring paddle 62 The stirring angle changes, thereby effectively improving the stirring and mixing effect, and when the fixed magnetic plate 54 and the moving magnetic plate 51 are separated from the repulsive area, the moving magnetic plate 51 will be reset under the rebound action of the reset spring 52, and the gas pressed into the piston ring box 64 will be sucked back, and the lifted core rod 63 will generate a large gravitational potential energy, causing it to fall rapidly, so that the friction plate 631 will fit and rub against the friction wheel 621 again, thereby changing the stirring angle of the stirring paddle 62 again, and at the same time, the top of the friction plate 631 will have an impact effect on the friction wheel 621, causing the driven shaft 41 and the stirring paddle 62 to vibrate as a whole, and cooperate with the stirring, so that the bubbles in the plastic slurry are effectively discharged upward, effectively improving the quality of the injection molded product.

[0040] In addition, it should be noted that the thrust generated by the repulsive action between the fixed magnetic plate 54 and the moving magnetic plate 51 is greater than the thrust required for the relative friction between the friction plate 631 and the friction wheel 621 .

[0041] Reference Figure 3 , Figure 8 and Fig. 9 An inner cold groove 7 and an outer cold groove 71 are provided in the lower mold plate 3, and the inner cold groove 7 and the outer cold groove 71 are respectively wrapped around the inner and outer side walls of each group of injection grooves 31, and the inner cold groove 7 and the outer cold groove 71 are interconnected. A liquid storage tank 72 is provided in the middle of the lower mold plate 3, and the liquid storage tank 72 is connected to the outer cold groove 71, and multiple groups of external cold grooves 71 are interconnected, and a positioning shaft 73 is fixedly connected in the liquid storage tank 72, and a liquid stirring impeller 731 is fixedly connected to the outer wall of the positioning shaft 73.

[0042] Through the arrangement of the above-mentioned structure, when the plastic slurry enters the injection tank 31, it will be cooled by the inner cold tank 7 and the outer cold tank 71, so that it will be quickly cooled and shaped. Since the lower mold plate 3 is rotating as a whole and its internal liquid stirring impeller 731 is fixed, it will promote the flow of the coolant in the liquid storage tank 72. The inner cold tank 7 is interconnected with the outer cold tank 71 and the liquid storage tank 72, so that the water-cooling liquids in various places will intersect and flow with each other, thereby improving the uniform cooling effect, avoiding the occurrence of cracks due to uneven cooling, and effectively improving the quality of injection molded products.

[0043] Reference Figure 1 , Figure 2 , Figure 4 and Figure 5 , wherein, the top end of the driven shaft 41 is rotatably connected with the air storage ring 8, the top of the air storage ring 8 is fixedly connected to the inner top of the servo motor 61 mounting frame, the air storage ring 8 is communicated with the inner cavity of the hollow cavity 411, the top end of the positioning shaft 73 is fixed on the outer wall of the air storage ring 8, the outer wall of the positioning shaft 73 is fixedly connected with a steam ring 81, both sides of the bottom of the steam ring 81 are fixedly connected with steam pipes 82, the bottom end of the steam pipe 82 is communicated with the inner cavity of the liquid storage tank 72, and the steam ring 81 is communicated with the inner cavity of the positioning shaft 73, and the inner cavity top end of the positioning shaft 73 is communicated with the inner cavity of the air storage ring 8, the top end of the core rod 63 is fixedly connected with a sealing slider 632, and a pressure relief hole 414 is opened on the upper part of the outer wall of the driven shaft 41, and the pressure relief hole 414 is communicated with the inner cavity of the hollow cavity 411.

[0044] Through the arrangement of the above-mentioned structure, after absorbing heat, part of the coolant in the liquid storage tank 72 will be evaporated and vaporized. At this time, the steam will enter the top cavity of the hollow cavity 411 along the steam pipe 82, the positioning shaft 73 and the air storage ring 8. When the sealing slider 632 passes over the pressure relief hole 414, the excess steam will be discharged along the pressure relief hole 414. In this way, force will be accumulated only after the core rod 63 is lifted. In this way, when the core rod 63 falls, a greater thrust impact effect will be obtained, thereby ensuring the rotation and vibration effect of the stirring paddle 62.

[0045] Reference Figure 1 A water injection pipe 83 is fixed and connected to the outer wall of the steam ring 81, and a sealing plug is fixedly connected to the top of the water injection pipe 83; by opening the sealing plug of the water injection pipe 83, coolant can be added to the liquid storage tank 72, which improves the convenience of use.

[0046] Reference Figure 1 , Figure 2A release agent tank 9 is fixedly connected to the top of the processing table 1, and an atomizing nozzle 91 is fixedly connected to the bottom of the release agent tank 9, and an electromagnetic valve is arranged in the atomizing nozzle 91; when the injection molding groove 31 after demolding moves to the bottom of the release agent tank 9, the electromagnetic valve in the atomizing nozzle 91 will be opened, so that the release agent is sprayed into the injection molding groove 31, so as to improve the demolding effect and ensure the demolding quality of the injection molding product.

[0047] Reference Figure 1-Figure 9 In the present invention, when in use, the plastic slurry is added into the storage tank 2. Under the action of gravity, the slurry in the storage tank 2 will fall into the storage tank 43 along the guide tube 442 and the guide ring 44. Then, the servo motor 61 is turned on to drive the driven shaft 41 to rotate, thereby driving the upper mold plate 4 to rotate. At the same time, the transmission effect of the pulley group 451 is used to make the lower mold plate 3 rotate synchronously. When the storage tank 43 on the upper mold plate 4 moves to the top of the discharge tank 421, the injection tank 3 on the lower mold plate 3 1 also happens to move to the bottom of the discharge trough 421 (here is the first station). At this time, under the action of gravity, the plastic slurry will fill the injection groove 31 by itself. Then, when the storage trough 43 and the injection groove 31 are separated from the communicating area, the plastic slurry is smoothed and compacted in the injection groove 31 under the action of the fitting and rotation of the lower mold plate 3 and the closing plate 42, which effectively improves the injection effect. Then, a new set of storage troughs 43 and the injection groove 31 will be connected again, realizing continuous injection production and effectively improving the injection efficiency.

[0048] When the plastic slurry enters the injection molding tank 31, it will be cooled by the inner cold tank 7 and the outer cold tank 71, so that it will be quickly cooled and shaped. Since the lower mold plate 3 is rotating as a whole and its internal liquid stirring impeller 731 is fixed, it will promote the flow of the coolant in the liquid storage tank 72. The inner cold tank 7 is interconnected with the outer cold tank 71 and the liquid storage tank 72, so that the water-cooling liquids in various places will intersect and flow with each other, thereby improving the uniform cooling effect and avoiding the occurrence of cracks due to uneven cooling, thereby effectively improving the quality of injection molded products. When the injection molding tank 31 filled with plastic slurry and shaped moves to the third station (located directly opposite the first station), under the repulsive effect of the fixed magnetic plate 54 and the moving magnetic plate 51, the moving magnetic plate 51 will drive the ejecting plate 53 to move upward, thereby ejecting the molded plastic product by itself, and then taking the material by manual or mechanical arms, thereby effectively improving the injection molding efficiency.

[0049] When the driven shaft 41 rotates, the stirring paddle 62 in the storage tank 2 will also be driven to rotate, so as to stir and mix the plastic slurry in the storage tank 2, ensure the uniform distribution of the components in the plastic slurry, and improve the injection molding quality; at the same time, when the moving magnetic plate 51 moves upward, it will compress the gas in the top material box 5, and make this part of the gas enter the piston ring box 64 along the gas guide groove 66, the gas guide ring 652, the sealing ring 651 and the gas guide pipe 65, so as to push the piston ring plate 641 to move upward, so as to use the linkage rod 642 and the horizontal push piece 413 to lift the core rod 63 upward, so that the friction plate 631 slides upward along the friction wheel 621, thereby driving the stirring paddle 62 to rotate, so that the stirring angle of the stirring paddle 62 changes, thereby effectively improving the stirring and mixing effect, and when the fixed magnetic plate 54 and the moving magnetic plate 51 are separated from the repulsive area, under the rebound action of the reset spring 52, the moving magnetic plate 51 will be reset, and the gas pressed into the piston ring box 64 will be sucked back. The core rod 63 after being lifted will generate a large gravitational potential energy, causing it to fall rapidly, so that the friction plate 631 will again rub against the friction wheel 621, thereby changing the stirring angle of the stirring paddle 62 again. At the same time, the top of the friction plate 631 will have an impact on the friction wheel 621, causing the driven shaft 41 and the stirring paddle 62 to vibrate as a whole, and with the stirring, the bubbles in the plastic slurry are effectively discharged upward, effectively improving the quality of the injection molded product; and after absorbing heat, part of the coolant in the liquid storage tank 72 will be evaporated and vaporized. At this time, the steam will enter the top cavity of the hollow cavity 411 along the steam pipe 82, the positioning shaft 73 and the gas storage ring 8, and when the sealing slider 632 passes over the pressure discharge hole 414, the excess steam will be discharged along the pressure discharge hole 414, so that the power will be stored only after the core rod 63 is lifted, so that when the core rod 63 falls, a greater thrust impact will be obtained, ensuring the rotation and vibration effect of the stirring paddle 62.

[0050] In addition, when the demolding injection groove 31 moves to the bottom of the demolding agent tank 9 (here is the second workstation), the solenoid valve in the atomizing nozzle 91 will open, so that the demolding agent is sprayed into the injection groove 31, so as to improve the demolding effect and ensure the demolding quality of the injection molded product.

[0051] 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. A plastic injection molding machine, comprising a processing table (1), characterized in that: The top of the processing table (1) is fixedly connected to a material storage tank (2), the top of the processing table (1) is rotatably connected to a lower mold plate (3), and the top of the lower mold plate (3) is provided with a plurality of injection grooves (31) at equal intervals, and further comprises: An injection molding module, the injection molding module being arranged on a processing table (1), and the injection molding module being used to realize continuous injection molding processing; A discharge assembly, the discharge assembly being arranged in the lower mold plate (3), and being used for ejecting the injection molded product formed in the injection molding groove (31); A stirring component is arranged in the storage tank (2), and the stirring component is used to evenly mix the injection slurry.

2. A plastic injection molding machine according to claim 1, characterized in that: The injection molding module comprises an upper mold plate (4), the top of the processing table (1) is rotatably connected to a driven shaft (41), the upper mold plate (4) is fixed on the outer wall of the driven shaft (41), the outer wall of the driven shaft (41) is rotatably connected to a closing plate (42), the bottom of the closing plate (42) is fixedly connected to the top of the processing table (1), the top of the closing plate (42) is attached to the bottom of the upper mold plate (4) and is slidably connected thereto, the bottom of the closing plate (42) is attached to the top of the lower mold plate (3) and is slidably connected thereto, and material storage grooves (43) are evenly spaced in the upper mold plate (4), The closing plate (42) is provided with a discharge trough (421), the upper mold plate (4) and the lower mold plate (3) are staggered and overlapped with each other, and the storage trough (43), the discharge trough (421) and the injection molding groove (31) located at the staggered overlap are connected up and down, and a guide ring (44) is fixed and connected between the tops of multiple groups of storage troughs (43), and the top of the guide ring (44) is rotatably connected to a rotating ring (441), and the top of the rotating ring (441) is fixedly connected to a guide pipe (442) at equal intervals, and the top of the guide pipe (442) is connected to the bottom of the inner cavity of the storage tank (2).

3. A plastic injection molding machine according to claim 2, characterized in that: A linkage bin (45) is provided in the processing table (1), and the bottom ends of the driven shaft (41) and the rotating shaft of the lower mold plate (3) both pass through the linkage bin (45) and are connected by a belt pulley set (451).

4. A plastic injection molding machine according to claim 2, characterized in that: The unloading assembly comprises a ejection box (5), the ejection box (5) is fixed at the bottom of the lower mold plate (3), and the ejection box (5) is located directly below each group of injection grooves (31), a moving magnetic plate (51) is slidably connected inside the ejection box (5), a return spring (52) is fixedly connected between the top of the moving magnetic plate (51) and the inner cavity of the ejection box (5), ejection plates (53) are fixedly connected to both sides of the top of the moving magnetic plate (51), the top of the ejection plate (53) penetrates into the injection groove (31), and the top of the ejection plate (53) in an unstressed state remains flush with the bottom of the injection groove (31), and a fixed magnetic plate (54) is fixedly connected to the top of the processing table (1), and the fixed magnetic plate (54) and the moving magnetic plate (51) repel each other magnetically.

5. A plastic injection molding machine according to claim 4, characterized in that: The stirring assembly includes a stirring bin (6). The driven shaft (41) penetrates upward through the storage tank (2) and extends above it. A servo motor (61) is fixedly connected to the top of the storage tank (2). The output shaft of the servo motor (61) is fixedly connected to the top end of the driven shaft (41). The stirring bin (6) is fixed to the outer wall of the driven shaft (41). Stirring paddles (62) are rotatably connected to both sides of the stirring bin (6). The rotating shaft of the stirring paddle (62) penetrates into the stirring bin (6) and is fixedly connected to a friction wheel (621). A hollow cavity (411) is formed in the driven shaft (41). A core rod (63) is slidably connected in the hollow cavity (411). A friction plate (631) is fixedly connected to the outer wall of the core rod (63) located in the stirring bin (6), and the friction plate (631) is arranged in an "n" shape.

6. A plastic injection molding machine according to claim 5, characterized in that: A piston ring box (64) is fixedly connected to the top of the processing table (1). The piston ring box (64) is sleeved outside the driven shaft (41), and the axis of the piston ring box (64) coincides with that of the driven shaft (41). A piston ring plate (641) is slidably connected in the piston ring box (64). A linkage rod (642) is fixedly connected to the top of the piston ring plate (641). A lifting groove (412) is formed in the outer wall at the bottom of the driven shaft (41). A horizontal pushing member (413) is slidably connected in the lifting groove (412). The bottom end of the core rod (63) is fixedly connected to the top of the horizontal pushing member (413). The top end of the linkage rod (642) is fixedly connected to the outer wall of the horizontal pushing member (413). An air guide pipe (65) is fixedly connected and communicated with the outer wall of the piston ring box (64). The top end of the air guide pipe (65) is fixedly connected and communicated with a sealing ring (651). An air guide ring (652) is slidably connected in the sealing ring (651). The air guide ring (652) is fixed to the outer wall of the lower mold plate (3). An air guide groove (66) is formed in the side wall of the blanking box (5). The air guide groove (66) penetrates through the air guide ring (652) and is communicated with the inner cavity of the sealing ring (651).

7. A plastic injection molding machine according to claim 5, characterized in that: An internal cooling groove (7) and an external cooling groove (71) are formed in the lower mold plate (3). The internal cooling groove (7) and the external cooling groove (71) respectively wrap the inner and outer side walls of each injection molding groove (31), and the internal cooling groove (7) and the external cooling groove (71) are communicated with each other. A liquid storage tank (72) is formed in the middle of the lower mold plate (3). The liquid storage tank (72) is communicated with the external cooling groove (71). Multiple groups of the external cooling grooves (71) are communicated with each other. A positioning shaft (73) is fixedly connected in the liquid storage tank (72). A liquid stirring impeller (731) is fixedly connected to the outer wall of the positioning shaft (73).

8. A plastic injection molding machine according to claim 7, characterized in that: The top end of the driven shaft (41) is rotatably connected to an air storage ring (8), the top of the air storage ring (8) is fixedly connected to the inner top of the servo motor (61) mounting frame, the air storage ring (8) is communicated with the inner cavity of the hollow cavity (411), the top end of the positioning shaft (73) is fixed to the outer wall of the air storage ring (8), the outer wall of the positioning shaft (73) is fixedly connected to a steam ring (81), and both sides of the bottom of the steam ring (81) are fixedly connected to steam pipes (81). 2), the bottom end of the steam pipe (82) is connected to the inner cavity of the liquid storage tank (72), and the steam ring (81) is connected to the inner cavity of the positioning shaft (73), and the top end of the inner cavity of the positioning shaft (73) is connected to the inner cavity of the gas storage ring (8), the top end of the core rod (63) is fixedly connected to the sealing slider (632), and the upper part of the outer wall of the driven shaft (41) is provided with a pressure relief hole (414), and the pressure relief hole (414) is connected to the inner cavity of the hollow cavity (411).

9. A plastic injection molding machine according to claim 8, characterized in that: A water injection pipe (83) is fixed on the outer wall of the steam ring (81) and is in communication with the water injection pipe. A sealing plug is fixedly connected to the top of the water injection pipe (83).

10. A plastic injection molding machine according to claim 1, characterized in that: A mold release agent tank (9) is fixedly connected to the top of the processing table (1), and a bottom end of the mold release agent tank (9) is fixed and connected to an atomizing nozzle (91), and a solenoid valve is arranged in the atomizing nozzle (91).

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