Injection molding machine

Abstract

The injection molding machine comprises an injection molding base table and a feeding table fixedly installed on one side of the injection molding base table, a heater is fixedly installed on one side of the upper portion of the feeding table, and a fixed mold table fixedly connected with the injection molding base table is arranged on the other side of the heater. When a plurality of injection molding heads on a mold table are all pressed in place by a spring rod, a gear shaft is driven to rotate through the operation of a double-shaft servo motor, so that a heat insulation belt extends upwards from the interior of an equipment box to the position between a heater and a charging barrel, the charging barrel is coated to block heat transfer, and meanwhile, the charging barrel is subjected to heat preservation; according to the injection molding device, the plastic melt in the charging barrel is prevented from being continuously heated and dried when the plastic mold is cooled and demolded, meanwhile, the situation that heating operation on the injection molding melt needs to be stopped after injection molding filling in the mold is completed is improved, energy consumption is reduced, and the injection molding efficiency is improved.

Description

Technical Field

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

[0002] An injection molding machine is a device used to manufacture plastic products. It heats and melts plastic particles, then injects the molten plastic into a mold, where the plastic cools to form a molded plastic product. Injection molding machines are widely used in the automotive industry, electronics industry, home appliance manufacturing, daily necessities production and other fields, and can produce plastic products of various shapes and sizes, such as plastic containers, parts, shells, etc. The use of injection molding machines can achieve mass production, high production efficiency, low cost, stable product quality and other advantages, and is one of the indispensable key equipment in the production process of plastic products.

[0003] After the injection molding filling is completed, in order to prevent the molten material from drying out at high temperature for a long time in the barrel, it is usually necessary to stop heating it. However, during the molding and demolding process of the product in the mold, the heating stop time is long when the injection molding is paused, resulting in a gradual decrease in the temperature of the barrel and the molten material inside. As a result, the molten material gradually solidifies and its fluidity is significantly reduced. When the heating is started again, it is necessary not only to reheat the barrel and the internal molten material to a suitable temperature, but also to melt the gradually solidified and fluidized plastic molten material to improve its fluidity, thereby increasing the consumption of time and energy.

[0004] To this end, an injection molding machine is proposed. Summary of the invention

[0005] The object of the present invention is to provide an injection molding machine to solve the problem raised in the above background technology that when the product in the mold stops injection molding during molding and demolding, the heating time is long, the temperature of the barrel and the molten material inside it will gradually decrease and solidify. When heated again, not only does the barrel need to be heated to restore the temperature, but the gradually solidified plastic also needs to be melted again, thereby consuming more time and energy.

[0006] To achieve the above object, the present invention provides the following technical solutions: An injection molding machine comprises an injection molding base and a feeding table fixedly installed on one side of the injection molding base, a heater is fixedly installed on one side of the upper part of the feeding table, and a fixed mold table fixedly connected to the injection molding base is provided on the other side of the heater, an equipment box is provided below the heater, and the equipment box is fixedly embedded and installed between the fixed mold table and the feeding table, a centrifugal pump is fixedly installed inside the feeding table, and a transmission rod is provided in the middle of the centrifugal pump, a double-axis servo motor is embedded and installed on the upper inner side of the feeding table, and the transmission rod is transmission-connected to the double-axis servo motor, a transmission box is fixedly installed on one side of the equipment box, and the double-axis servo motor is transmission-connected to the transmission box; Two gear shafts are movably mounted inside the equipment box, and the gear shafts are drivingly connected to the transmission box. Two cooling boxes are arranged below the gear shafts, and the cooling boxes are engaged with the equipment box. An insulating belt is arranged in the middle of the cooling box, and the insulating belt is meshingly connected with the gear shaft. A mold plate is embedded and installed on one side of the fixed mold table, and a mold table is fixedly installed on the mold plate, a plurality of injection heads are embedded and installed on the inner side of the mold table, a connecting shaft is installed around one side of the injection head, and an adjustment plate is fixedly connected to one side of the connecting shaft, a spring rod is provided on the outer side of the adjustment plate, and the spring rod is fixedly installed around one side of the injection head at an equal distance, an extrusion plate is fixedly installed on the other side of the spring rod, and the adjustment plate is penetrated and arranged on the inner side of the extrusion plate; A barrel is embedded and installed on the inner side of the feeding table, and the barrel is arranged on the inner side of the heater, a threaded extrusion rod is movably embedded and installed on the inner side of the barrel, a branch conduit connected with multiple injection heads is embedded and installed on one side of the threaded extrusion rod, and the branch conduit is fixedly connected to the fixed mold table, a docking rod penetrating the inner side of the threaded extrusion rod is fixedly installed on one side of the branch conduit, an extrusion port is arranged on the outer side of the docking rod, and the extrusion port is connected with the barrel.

[0007] In the above scheme, preferably: a feed barrel is fixedly installed above the feed platform, and the feed barrel is connected to one side of the barrel, a fixing plate is fixedly installed on the other side above the injection molding base, and an air pump is fixedly installed on one side of the fixing plate.

[0008] In the above scheme, preferably: a movable mold table is provided on the other side of the fixed plate, and balance slide bars are respectively installed at the four corners between the fixed plate and the movable mold table, and a telescopic gas rod with the fixed plate and the movable mold table is embedded in the symmetry center of the balance slide bar.

[0009] In the above scheme, preferably: a mold plate is embedded and installed on one side of the fixed mold table and the movable mold table, and a guide groove is provided inside the mold plate, and docking joints are fixedly connected on both sides of the mold plate, and the docking joints are through-connected with the guide groove in the mold plate.

[0010] In the above scheme, preferably: a plurality of telescopic ejector rods are movably mounted on the inner side of the mold table, and the telescopic ejector rods are fixedly connected to the fixed mold table, one side of the two cooling boxes is connected with a connecting pipe, and one side of the connecting pipe is fixedly connected with multiple pipes.

[0011] In the above scheme, preferably: the four corners of the mold plate on the fixed mold table are provided with docking holes, the four corners of the mold plate on the movable mold table are fixedly installed with docking rods, and the docking rods and the docking holes are arranged in a aligned and interlocking manner, and the inner sides of the mold plates on the fixed mold table and the movable mold table are provided with injection-molded plastic molds.

[0012] In the above scheme, preferably: one side of the threaded extrusion rod is hollow, and guide grooves are equidistantly arranged around the outside of the hollow threaded extrusion rod, the inner side of the guide groove is provided with an internal thread fixedly connected to the threaded extrusion rod, and the docking rod passes through the inner side of the internal thread, one side of the threaded extrusion rod is provided with a transmission head, and the transmission head passes through one side of the barrel and is movably mounted on the inner side of the feed table, and one side of the internal thread is provided with a discharge outlet that passes through the threaded extrusion rod.

[0013] In the above scheme, preferably: one side of the insulation belt is provided with a tooth groove meshing with the gear shaft, the dual-axis servo motor and the spring rod are connected by telecommunication, and a torsion spring for adjusting the plate to open and reset is provided in the connecting shaft.

[0014] The present invention provides an injection molding machine having the following technical points and beneficial effects:

[0015] 1. The present invention designs devices such as a double-axis servo motor, an insulating belt and a spring rod. When multiple injection heads on the mold table are pressed into place under the spring rod, the gear shaft is driven to rotate by the operation of the double-axis servo motor, so that the insulating belt extends upward from the equipment box to between the heater and the barrel, and covers the barrel to block the transfer of heat, and at the same time, the barrel is kept warm, thereby preventing the plastic melt in the barrel from being continuously heated and dried when the plastic mold is cooled and demolded. At the same time, it improves the situation that the heating operation of the injection melt needs to be stopped after the injection molding filling in the mold is completed, thereby avoiding the situation that the heater is restarted to heat the barrel to restore the temperature and re-melt the gradually solidified plastic, thereby reducing energy consumption and improving the efficiency of injection molding.

[0016] 2. The present invention designs a dual-axis servo motor, a cooling box, a spring rod and other devices. When the plastic mold is taken out from the mold plate, the dual-axis servo motor performs a reverse rotation operation. When the coolant is circulated in the cooling box through a centrifugal pump, the coolant circulating for cooling the plastic mold is transported to the cooling box on one side through a connecting pipe on one side for cooling, and the coolant after further cooling is transported to the guide groove in the mold plate through the connecting pipe on the other side of the cooling box for circulating cooling of the plastic mold, thereby improving the cooling efficiency of the plastic mold.

[0017] 3. The present invention designs guide grooves, discharge outlets, internal threads and other devices, and transfers heat to the barrel through the operation of the heater, thereby heating and melting the plastic particles transported by the threaded extrusion rod in the barrel. At this time, through the rotation of the threaded extrusion rod, the guide groove scoops the plastic melt with relatively low fluidity in the inner circle into one side of the threaded extrusion rod, and then the plastic melt with low fluidity on one side of the inner side of the threaded extrusion rod is discharged again from the discharge outlet for reflux heating, thereby improving the efficiency of injection molding, and the plastic melt with higher fluidity in the outer circle enters the branch duct through the extrusion port, and the plastic melt with higher fluidity is transported to the injection molding head through the branch duct for injection molding, so as to facilitate flow filling and molding in the mold plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 It is a schematic diagram of the local structure of the mold plate in the present invention.

[0020] Figure 3 It is a schematic diagram of the local structure of the fixed mold platform in the present invention.

[0021] Figure 4 It is a schematic diagram of the partial structure of the threaded extrusion rod in the present invention.

[0022] Figure 5 It is a schematic diagram of the local structure of the mold table in the present invention.

[0023] Figure 6 It is a schematic diagram of the cross-sectional structure of the threaded extruded rod in the present invention.

[0024] Figure 7 It is a schematic diagram of the partial structure disassembly of the barrel in the present invention.

[0025] Figure 8 It is a schematic diagram of the partial structure of the internal thread in the present invention.

[0026] Fig. 9 A schematic diagram of the local structure of the injection molding head in the present invention.

[0027] Fig.10 For the present invention Figure 3 A schematic diagram of the enlarged local structure at point A in the middle.

[0028] Fig.11 For the present invention Fig. 9 A magnified schematic diagram of the local structure at point B in the middle.

[0029] In the figure: 1, injection molding base; 101, fixed plate; 2, feed table; 201, centrifugal pump; 202, double-axis servo motor; 3, feed barrel; 4, heater; 5, equipment box; 501, cooling box; 502, gear shaft; 503, insulation belt; 504, transmission box; 6, fixed mold table; 601, telescopic ejector rod; 7, movable mold table; 8, balance slide rod; 9, air pump; 10, telescopic air rod; 11, mold plate; 1101, docking rod; 1102, mold table; 1 103, docking hole; 12, barrel; 13, connecting pipe; 1301, multi-way pipe; 14, docking joint; 15, plastic mold; 16, injection head; 1601, extrusion plate; 1602, spring rod; 1603, adjustment plate; 1604, connecting shaft; 17, threaded extrusion rod; 1701, guide groove; 1702, discharge outlet; 1703, transmission head; 1704, internal thread; 18, branch guide tube; 1801, docking rod; 1802, extrusion outlet. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] See also Figures 1 to 11 , the present invention provides a technical solution for an injection molding machine: An injection molding machine comprises an injection molding base 1 and a feeding table 2 fixedly installed on one side of the injection molding base 1, a heater 4 is fixedly installed on one side of the upper side of the feeding table 2, and a fixed mold table 6 fixedly connected to the injection molding base 1 is provided on the other side of the heater 4, an equipment box 5 is provided below the heater 4, and the equipment box 5 is fixedly installed in the middle of the fixed mold table 6 and the feeding table 2, a centrifugal pump 201 is fixedly installed inside the feeding table 2, and a transmission rod is provided in the middle of the centrifugal pump 201, a double-axis servo motor 202 is embedded and installed on the upper inner side of the feeding table 2, and the transmission rod is transmission-connected to the double-axis servo motor 202, a transmission box 504 is fixedly installed on one side of the equipment box 5, and the double-axis servo motor 202 is transmission-connected to the transmission box 504; As an embodiment of the present invention, Figure 3 , Fig. 9 , Fig.10 and Fig.11As shown, a mold plate 11 is embedded and installed on one side of the fixed mold table 6, and a mold table 1102 is fixedly installed on the mold plate 11, and a plurality of injection heads 16 are embedded and installed on the inner side of the mold table 1102, a connecting shaft 1604 is installed around one side of the injection head 16, and an adjusting plate 1603 is fixedly connected to one side of the connecting shaft 1604, a spring rod 1602 is provided on the outer side of the adjusting plate 1603, and the spring rod 1602 is fixedly installed around one side of the injection head 16 at an equal distance, an extrusion plate 1601 is fixedly installed on the other side of the spring rod 1602, and the adjusting plate 1603 is penetrated and arranged on the inner side of the extrusion plate 1601, the dual-axis servo motor 202 and the spring rod 1602 are arranged in telecommunication connection, and a torsion spring for opening and resetting the adjusting plate 1603 is provided in the connecting shaft 1604; During operation, the mold plates 11 on the fixed mold table 6 and the movable mold table 7 are docked and fitted, and a mold table 1102 with a specific shape is used to perform injection molding in the cavity after the mold plates 11 are fitted to form a plastic mold 15. During the injection molding process, the plastic melt is injected into the cavity by the injection molding head 16 on the mold table 1102. When the continuous injection molding of the injection molding head 16 fills the cavity with the plastic melt, the continuously injected plastic melt generates pressure on the extrusion plate 1601, thereby pushing the extrusion plate 1601 to move downward on the spring rod 1602. At this time, the opening of the adjustment plate 1603 gradually becomes smaller when the extrusion plate 1601 is pressed downward. When the extrusion plate 1601 is pressed into place by the spring rod 1602, the injection molding operation of the injection molding head 16 is stopped. At this time, the adjustment plate 1603 is squeezed by the extrusion plate 1601 to a closed state, thereby avoiding To prevent the highly fluid plastic melt from producing a water hammer effect when the feeding is stopped, when the multiple injection heads 16 on the mold table 1102 are pressed into place by the spring rod 1602, a current path is formed between the spring rod 1602 and the dual-axis servo motor 202, and current and signals are transmitted to the dual-axis servo motor 202. At this time, the dual-axis servo motor 202 starts to rotate in a directional manner after receiving the current and signals. When the plastic mold 15 is taken out from the mold plate 11, since a torsion spring is provided in the connecting shaft 1604, when the extrusion plate 1601 is pushed up by the spring rod 1602, the opening of the adjustment plate 1603 through the connecting shaft 1604 gradually becomes larger, and the path for the spring rod 1602 to transmit current and signals to the dual-axis servo motor 202 is interrupted. When the parallel current and signal path is interrupted, the dual-axis servo motor 202 performs a reverse rotation operation.

[0032] As an embodiment of the present invention, Figure 2 , Figure 3 , Figure 4 and 10As shown, two gear shafts 502 are movably mounted inside the equipment box 5, and the gear shafts 502 are transmission-connected with the transmission box 504, two cooling boxes 501 are arranged below the gear shafts 502, and the cooling boxes 501 are embedded and connected with the equipment box 5, an insulating belt 503 is arranged in the middle of the cooling box 501, and the insulating belt 503 is meshingly connected with the gear shaft 502, and one side of the insulating belt 503 is provided with a tooth groove meshing with the gear shaft 502, one side of the two cooling boxes 501 is connected with a connecting pipe 13, and one side of the connecting pipe 13 is fixedly connected with a multi-way pipe 1301; When working, the transmission box 504 is powered by the operation of the dual-axis servo motor 202, and the power is transmitted to the two gear shafts 502 through the transmission box 504. Since the insulation belt 503 is meshed and connected with the gear shaft 502 through the tooth groove, when the dual-axis servo motor 202 is in operation, the gear shaft 502 is driven to rotate, so that the insulation belt 503 extends upward from the equipment box 5 to between the heater 4 and the barrel 12, and covers the barrel 12 to block the transfer of heat. Secondly, the dual-axis servo motor 202 provides operating power for the centrifugal pump 201 through the transmission rod, and the coolant in the two cooling boxes 501 is circulated and transported through the operation of the centrifugal pump 201, and the heat is transported to the heater 4 through the heat dissipation pipe in the cooling box 501, so as to perform heat exchange when the cooling box 501 is refrigerated, and reduce the energy consumption of the heater 4 when heating the plastic particles in the barrel 12; When the coolant is circulated in the cooling box 501 by the centrifugal pump 201, the coolant circulating for cooling the plastic mold 15 is transported to the cooling box 501 on one side through the connecting pipe 13 on one side for cooling, and the coolant after further cooling is transported to the guide groove in the mold plate 11 through the connecting pipe 13 on the other side through the cooling box 501 on the other side to circulate and cool the plastic mold 15, thereby realizing heat energy conversion and utilization, and improving the cooling efficiency of the plastic mold 15. When the plastic mold 15 is taken out of the mold plate 11 and the injection molding operation is performed again, the dual-axis servo motor 202 performs reverse rotation operation to collect the insulation belt 503 into the equipment box 5 to cancel the coating of the barrel 12, and then the threaded extrusion rod 17 is rotated in the barrel 12 through the operation of the feeding table 2 to melt and transport the plastic particles.

[0033] As an embodiment of the present invention, Figures 4 to 8As shown, a barrel 12 is embedded and installed on the inner side of the feed table 2, and the barrel 12 is arranged on the inner side of the heater 4, a threaded extrusion rod 17 is movably embedded and installed on the inner side of the barrel 12, a branch conduit 18 connected to multiple injection heads 16 is embedded and installed on one side of the threaded extrusion rod 17, and the branch conduit 18 is fixedly connected to the fixed mold table 6, and a docking rod 1801 penetrating the inner side of the threaded extrusion rod 17 is fixedly installed on one side of the branch conduit 18, an extrusion port 1802 is arranged on the outer side of the docking rod 1801, and the extrusion port 1802 is connected to the barrel 12; One side of the threaded extrusion rod 17 is hollow, and a guide groove 1701 is equidistantly arranged around the outer side of the hollow threaded extrusion rod 17, an internal thread 1704 fixedly connected to the threaded extrusion rod 17 is arranged on the inner side of the guide groove 1701, and a docking rod 1801 penetrates the inner side of the internal thread 1704, a transmission head 1703 is arranged on one side of the threaded extrusion rod 17, and the transmission head 1703 penetrates one side of the barrel 12 and is movably mounted on the inner side of the feed table 2, and a discharge outlet 1702 penetrating the threaded extrusion rod 17 is arranged on one side of the internal thread 1704; During operation, the feeding station 2 controls the conveying operation of the threaded extrusion rod 17 on the plastic particles and the plastic melt. When the plastic particles are conveyed by the threaded extrusion rod 17, the heater 4 is operated to transfer heat to the barrel 12, and then the plastic particles conveyed by the threaded extrusion rod 17 in the barrel 12 are heated and melted. Since the temperature of the melt far away from the heating part is higher than that of the melt close to the heating part in the barrel 12, the temperature of the melt close to the heating part of the barrel 12 is relatively high and the fluidity is relatively strong, while the temperature of the plastic melt in the inner circle of the barrel 12 is relatively low and the fluidity is relatively weak. At this time, the threaded extrusion rod 17 is rotated to make the guide groove 1701 copy the plastic melt with relatively low fluidity in the inner circle The plug-in rod 1801 penetrates the inside of one side of the threaded extrusion rod 17, and the internal thread 1704 on one side of the threaded extrusion rod 17 is opposite to the thread on the outside of the threaded extrusion rod 17. The plastic melt with lower fluidity on one side of the threaded extrusion rod 17 is discharged again from the discharge outlet 1702 for reflux heating, thereby improving the efficiency of injection molding. The plastic melt with higher fluidity in the outer circle enters the branch duct 18 through the extrusion port 1802, and the plastic melt with higher fluidity is transported to the injection head 16 through the branch duct 18 for injection molding, thereby improving the fluidity of the plastic melt to facilitate flow, filling and molding in the mold plate 11.

[0034] As an embodiment of the present invention, Figure 1 and Figure 2As shown, a feed barrel 3 is fixedly installed above the feed table 2, and the feed barrel 3 is connected to one side of the barrel 12, a fixed plate 101 is fixedly installed on the other side of the top of the injection molding base 1, and an air pump 9 is fixedly installed on one side of the fixed plate 101; a movable mold table 7 is provided on the other side of the fixed plate 101, and balance slide bars 8 are respectively installed at the four corners between the fixed plate 101 and the movable mold table 7, and a telescopic air rod 10 with the fixed plate 101 and the movable mold table 7 is embedded in the symmetric center of the balance slide bar 8; During operation, the feed barrel 3 is installed and used through the feed table 2. The installation of the feed barrel 3 facilitates the transportation of plastic particles into the barrel 12, and then the plastic particles are heated to a molten state by the heater 4 in the barrel 12. Secondly, the fixed plate 101 is installed on the injection molding base 1, and the air pump 9 is installed on the fixed plate 101. Since a balancing slide bar 8 is provided between the fixed plate 101 and the movable mold table 7, and a telescopic gas rod 10 is provided in the center, the telescopic gas rod 10 is telescoped through the operation of the air pump 9 to push the movable mold table 7 to move, thereby realizing the opening and closing operation of the fixed mold table 6 and the movable mold table 7, so that the plastic mold 15 can be injection molded in the mold plate 11 in the fixed mold table 6 and the movable mold table 7. Secondly, the balancing slide bar 8 is used to improve the stability during the movement when the movable mold table 7 moves.

[0035] As an embodiment of the present invention, Figures 1 to 5 As shown, a mold plate 11 is installed on one side of the fixed mold platform 6 and the movable mold platform 7, and a guide groove is provided inside the mold plate 11. Both sides of the mold plate 11 are fixedly connected with docking joints 14, and the docking joints 14 are connected with the guide groove in the mold plate 11. The four corners of the mold plate 11 on the fixed mold platform 6 are provided with docking holes 1103, and the four corners of the mold plate 11 on the movable mold platform 7 are fixedly installed with docking rods 1101, and the docking rods 1101 and the docking holes 1103 are arranged in a counter-positioned and embedded arrangement. The inner side of the mold plate 11 on the fixed mold platform 6 and the movable mold platform 7 is provided with an injection-molded plastic mold 15, and the inner side of the mold platform 1102 is movably installed with a plurality of telescopic ejector rods 601, and the telescopic ejector rods 601 are all fixedly connected to the fixed mold platform 6; During operation, the movable mold table 7 is moved on the injection molding base 1 toward the fixed mold table 6, so that the mold plates 11 are docked with each other. When docking, the docking rod 1101 and the docking hole 1103 are aligned to improve the stability of injection molding after docking and bonding. The plastic melt is injected and ejected through the injection head 16 on the mold table 1102, so that the plastic mold 15 is filled in the cavity generated by the mold plate 11 after bonding, thereby completing the injection molding process of the product. Secondly, the docking joint 14 is connected with the external connecting pipe and the multi-way pipe 1 301 is connected, so that the coolant after refrigeration in the cooling box 501 circulates in the guide groove in the mold plate 11. During the injection molding process, the circulating coolant quickly absorbs the heat of the plastic mold 15 through the guide groove, which effectively reduces the injection molding time of the plastic mold 15 and improves the production efficiency. When the plastic mold 15 is formed and cooled, the plastic mold 15 is pushed out from the cavity of the mold plate 11 through the operation of the telescopic ejector rod 601 to complete the demolding of the plastic mold 15 after molding.

[0036] Working principle: the feed barrel 3 is installed and used through the feed table 2, and the installation of the feed barrel 3 facilitates the delivery of plastic particles into the barrel 12, and then the plastic particles are heated to a molten state by the heater 4 in the barrel 12. Secondly, the fixed plate 101 is installed on the injection molding base 1, and the air pump 9 is installed on the fixed plate 101. The telescopic gas rod 10 is telescopically operated through the operation of the air pump 9 to push the movable mold table 7 to move, thereby realizing the opening and closing operation of the fixed mold table 6 and the movable mold table 7, so that the plastic mold 15 can be injection molded in the mold plate 11 in the fixed mold table 6 and the movable mold table 7; The plastic melt is injected and ejected through the injection head 16 on the mold table 1102, so that the plastic mold 15 is filled in the cavity generated by the mold plate 11 after bonding, thereby completing the injection molding process of the product. Secondly, the external connecting pipe and the multi-way pipe 1301 are connected through the joint 14, so that the coolant after refrigeration in the cooling box 501 circulates in the guide groove in the mold plate 11. During the injection molding process, the circulating coolant quickly absorbs the heat of the plastic mold 15 through the guide groove to cool it into shape. When the plastic mold 15 is formed and cooled, the plastic mold 15 is pushed out from the cavity of the mold plate 11 through the operation of the telescopic ejector 601 to complete the demoulding of the plastic mold 15 after molding. During the injection molding process, the plastic melt is injected into the cavity by the injection head 16 on the mold table 1102. When the continuous injection of the injection head 16 fills the cavity with the plastic melt, the continuously injected plastic melt generates pressure on the extrusion plate 1601, thereby pushing the extrusion plate 1601 to move downward on the spring rod 1602. At this time, the opening of the adjustment plate 1603 gradually becomes smaller when the extrusion plate 1601 is pressed down by the spring rod 1602. When the extrusion plate 1601 is pressed into place by the spring rod 1602, the injection head 16 stops the injection molding operation. At this time, the adjustment plate 1603 is squeezed by the extrusion plate 1601 to a closed state. When the multiple injection heads 16 on the mold table 1102 are pressed into place by the spring rod 1602, the dual-axis servo motor 202 receives the current and signal and starts to rotate in a directional manner. When the plastic mold 15 is taken out of the mold plate 11, the spring rod 1602 pushes the extrusion plate 1601 upward, and the adjustment plate 1603 gradually becomes larger through the opening of the connecting shaft 1604. At the same time, the dual-axis servo motor 202 performs a reverse rotation operation. The operation of the dual-axis servo motor 202 provides power for the transmission box 504, and the power is transmitted to the two gear shafts 502 through the transmission box 504. When the dual-axis servo motor 202 operates, the gear shafts 502 are driven to rotate, so that the insulation belt 503 extends upward from the equipment box 5 to between the heater 4 and the barrel 12, and covers the barrel 12 to block the transfer of heat. Secondly, the dual-axis servo motor 202 provides operating power for the centrifugal pump 201 through the transmission rod, and the operation of the centrifugal pump 201 circulates the coolant in the two cooling boxes 501, and the heat is transported to the heater 4 through the heat dissipation pipe in the cooling box 501, so as to perform heat exchange when the cooling box 501 is refrigerated, and reduce the energy consumption of the heater 4 when heating the plastic particles in the barrel 12; When the coolant is circulated and transported in the cooling box 501 through the centrifugal pump 201, the coolant circulating for cooling the plastic mold 15 is transported to the cooling box 501 on one side through the connecting pipe 13 on one side for cooling, and the coolant after further cooling is transported to the guide groove in the mold plate 11 through the connecting pipe 13 on the other side through the cooling box 501 on the other side for circulating cooling of the plastic mold 15, thereby realizing heat energy conversion and utilization, and improving the cooling efficiency of the plastic mold 15. When the plastic mold 15 is taken out of the mold plate 11 and the injection molding operation is performed again, the double-axis servo motor 202 performs reverse rotation operation to collect the insulation belt 503 into the equipment box 5 to cancel the coating of the barrel 12, and then the threaded extrusion rod 17 is rotated in the barrel 12 through the operation of the feeding table 2 to melt and transport the plastic particles; The conveying operation of the threaded extrusion rod 17 for plastic particles and plastic melt is controlled by the feed table 2. When the plastic particles are being conveyed by the threaded extrusion rod 17, the heat is transferred to the barrel 12 through the operation of the heater 4, and then the plastic particles conveyed by the threaded extrusion rod 17 in the barrel 12 are heated and melted. At this time, through the rotation of the threaded extrusion rod 17, the guide groove 1701 scoops the plastic melt with relatively low fluidity in the inner circle into one side of the threaded extrusion rod 17, and then the plastic melt with low fluidity on one side of the inner side of the threaded extrusion rod 17 is discharged again from the discharge outlet 1702 for reflux heating, thereby improving the efficiency of injection molding, and the plastic melt with higher fluidity in the outer circle enters the branch duct 18 through the extrusion port 1802, and the plastic melt with higher fluidity is respectively conveyed to the injection head 16 through the branch duct 18 for injection molding, so as to facilitate flow filling and molding in the mold plate 11.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An injection molding machine, comprising an injection molding base (1) and a feed table (2) fixedly mounted on one side of the injection molding base (1), a heater (4) fixedly mounted on one side of the feed table (2), and a fixed mold table (6) fixedly connected to the injection molding base (1) is provided on the other side of the heater (4), an equipment box (5) is provided below the heater (4), and the equipment box (5) is fixedly mounted between the fixed mold table (6) and the feed table (2), characterized in that: A centrifugal pump (201) is fixedly installed inside the feed table (2), and a transmission rod is provided in the middle of the centrifugal pump (201); a double-axis servo motor (202) is embedded and installed on the upper inner side of the feed table (2), and the transmission rod is in transmission connection with the double-axis servo motor (202); a transmission box (504) is fixedly installed on one side of the equipment box (5), and the double-axis servo motor (202) is in transmission connection with the transmission box (504); Two gear shafts (502) are movably mounted inside the equipment box (5), and the gear shafts (502) are drivingly connected to the transmission box (504); two cooling boxes (501) are arranged below the gear shafts (502), and the cooling boxes (501) are engaged with the equipment box (5); an insulating belt (503) is arranged in the middle of the cooling box (501), and the insulating belt (503) is meshingly connected to the gear shafts (502); A mold plate (11) is mounted on one side of the fixed mold platform (6), and a mold platform (1102) is fixedly mounted on the mold plate (11); a plurality of injection heads (16) are mounted on the inner side of the mold platform (1102); a connecting shaft (1604) is mounted around one side of the injection head (16); an adjustment plate (1603) is fixedly connected to one side of the connecting shaft (1604); a spring rod (1602) is mounted on the outer side of the adjustment plate (1603); the spring rod (1602) is fixedly mounted around one side of the injection head (16) at an equal distance; an extrusion plate (1601) is fixedly mounted on the other side of the spring rod (1602), and the adjustment plate (1603) is arranged to penetrate the inner side of the extrusion plate (1601); A barrel (12) is embedded and installed on the inner side of the feed table (2), and the barrel (12) is arranged on the inner side of the heater (4). A threaded extrusion rod (17) is movably embedded and installed on the inner side of the barrel (12). A branch conduit (18) connected to a plurality of injection heads (16) is embedded and installed on one side of the threaded extrusion rod (17), and the branch conduit (18) is fixedly connected to the fixed mold table (6). A docking rod (1801) penetrating the inner side of the threaded extrusion rod (17) is fixedly installed on one side of the branch conduit (18), and an extrusion port (1802) is provided on the outer side of the docking rod (1801), and the extrusion port (1802) is connected to the barrel (12).

2. The injection molding machine according to claim 1, characterized in that: A feed barrel (3) is fixedly mounted above the feed platform (2), and the feed barrel (3) is connected to one side of the barrel (12) in a through-connection manner. A fixed plate (101) is fixedly mounted on the other side above the injection molding base (1), and an air pump (9) is fixedly mounted on one side of the fixed plate (101).

3. The injection molding machine according to claim 2, characterized in that: A movable die table (7) is provided on the other side of the fixed plate (101), and balancing slide bars (8) are respectively installed at four corners between the fixed plate (101) and the movable die table (7), and a telescopic gas rod (10) connected to the fixed plate (101) and the movable die table (7) is embedded and installed at the symmetrical center of the balancing slide bar (8).

4. The injection molding machine according to claim 1, characterized in that: A mold plate (11) is mounted on one side of the fixed mold platform (6) and the movable mold platform (7), and a guide groove is provided inside the mold plate (11). Both sides of the mold plate (11) are fixedly connected with a docking joint (14), and the docking joint (14) is connected to the guide groove in the mold plate (11).

5. The injection molding machine according to claim 1, characterized in that: A plurality of telescopic ejector rods (601) are movably mounted on the inner side of the mold platform (1102), and the telescopic ejector rods (601) are fixedly connected to the fixed mold platform (6). One side of the two cooling boxes (501) is connected through a connecting pipe (13), and one side of the connecting pipe (13) is fixedly connected through a plurality of through pipes (1301).

6. The injection molding machine according to claim 4, characterized in that: The mold plate (11) on the fixed mold platform (6) is provided with docking holes (1103) at four corners, and the mold plate (11) on the movable mold platform (7) is fixedly installed with docking rods (1101) at four corners, and the docking rods (1101) and the docking holes (1103) are arranged in a aligned and chiseled arrangement, and plastic molds (15) for injection molding are provided on the inner sides of the mold plates (11) on the fixed mold platform (6) and the movable mold platform (7).

7. The injection molding machine according to claim 1, characterized in that: One side of the threaded extrusion rod (17) is hollow, and a guide groove (1701) is equidistantly arranged around the outer side of the hollow threaded extrusion rod (17), the inner side of the guide groove (1701) is provided with an internal thread (1704) fixedly connected to the threaded extrusion rod (17), and the docking rod (1801) passes through the inner side of the internal thread (1704), one side of the threaded extrusion rod (17) is provided with a transmission head (1703), and the transmission head (1703) passes through one side of the barrel (12) and is movably mounted on the inner side of the feed table (2), and one side of the internal thread (1704) is provided with a discharge outlet (1702) that passes through the threaded extrusion rod (17).

8. The injection molding machine according to claim 1, characterized in that: One side of the insulation belt (503) is provided with a tooth groove meshing with the gear shaft (502), the dual-axis servo motor (202) and the spring rod (1602) are arranged in telecommunication connection, and a torsion spring for opening and resetting the adjustment plate (1603) is provided in the connecting shaft (1604).

Images