A multi-station temperature-controlled injection molding machine

Abstract

The present invention belongs to the technical field of injection molding, and specifically is a multi-station temperature-controlled injection molding machine; comprising: a base and a motor; further comprising: an injection molding component, the injection molding component is rotatably connected to the base; the injection molding component is used to inject molten plastic; a mold component, the mold component is used to injection-mold the molten plastic; a temperature control component, the temperature control component is used to preheat and cool the mold component; a transmission component, the transmission component is used to transfer cooling water to the temperature control component to cool the mold component; a controller is used to control the injection molding component to heat plastic particles so that the plastic particles are heated to a molten state, and while the plastic particles are heated and melted, the waste heat generated by the heating of the injection molding component is transmitted to the mold component through the temperature control component, and the mold component is preheated by the waste heat, thereby improving the utilization rate of the waste heat of the injection molding component heating the plastic particles and reducing energy consumption.

Description

Technical Field

[0001] The invention belongs to the technical field of injection molding, in particular to a multi-station temperature-controlled injection molding machine. Background Art

[0002] Injection molding machine is the main molding equipment that uses plastic molding molds to make plastic products of various shapes from thermoplastic plastics or thermosetting plastics. The injection molding machine can heat the plastic, apply pressure to the molten plastic, and make it eject and fill the mold cavity. The injection molding machine has the ability to form plastic products with complex shapes, precise dimensions or dense textures with metal inserts in one go. It is widely used in defense, electromechanics, automobiles, transportation, building materials, packaging, agriculture, culture, education, health and people's daily life.

[0003] Injection molding is a cyclic process, which is to inject molten material into a mold with a certain shape and structure, take it out after cooling, take out the finished plastic part, and then close the mold to carry out the next cycle, that is, to get the shape and structure we want; in the injection molding process, the appearance of the finished product, the physical properties of the material, the finished product cycle, etc. are significantly affected by the mold temperature;

[0004] In the prior art, before injecting the molten plastic, the mold needs to be preheated to a certain temperature to prevent the molten plastic from being cooled and formed too early, thereby causing the injected molten plastic to have a fault problem; and after the molten plastic is injected, the mold needs to be cooled to a lower temperature so that the molten plastic can be formed faster;

[0005] In the prior art, a multi-station injection molding machine is used, and the mold needs to be preheated and cooled separately. The mold needs to be not only preheated but also cooled. Since the physical cooling time is generally long and the energy consumption is large, the yield is low.

[0006] In view of this, in order to overcome the above technical problems, the present invention designs a multi-station temperature-controlled injection molding machine to solve the above technical problems. Summary of the invention

[0007] The technical problem to be solved by the present invention is that: when using a multi-station injection molding machine, the mold needs to be preheated and cooled separately. Not only does the mold need to be preheated, but the mold also needs to be cooled. Since the physical cooling time is generally long and the energy consumption is large, the yield is low;

[0008] The present invention provides a multi-station temperature-controlled injection molding machine, comprising: a base and a motor; and further comprising:

[0009] Injection molding components,

[0010] The injection molding assembly is rotatably connected to the base; the injection molding assembly is used to inject molten plastic;

[0011] Mold components,

[0012] The mold assembly is fixedly connected to the base, and the mold assembly is used for injection molding molten plastic;

[0013] Temperature control components,

[0014] The temperature control component is located in the base, and the temperature control component is used to preheat and cool the mold component;

[0015] Transmission components,

[0016] The transmission component is located in the base, and is used to transfer cooling water to the temperature control component to cool the mold component.

[0017] Preferably, the injection molding component comprises:

[0018] Intermittent gear set,

[0019] The intermittent gear set is rotatably connected to the base; the intermittent gear set comprises: a main gear, an auxiliary gear and an inner ring gear; a fixed shaft is sleeved inside the auxiliary gear, and the upper and lower ends of the fixed shaft are rotatably connected inside the base; the main gear and the auxiliary gear are in the shape of half gears, and the inner ring gear is in the shape of full teeth; the number of teeth of the auxiliary gear is one eighth of the number of teeth of the inner ring gear;

[0020] Heating channel,

[0021] The heating channel is fixedly connected to the inner ring gear in the intermittent gear set; an electric heating wire is arranged in the inner wall of the heating channel;

[0022] No. 1 Auger,

[0023] The No. 1 auger is located in the heating channel, one end of the No. 1 auger rotation shaft passes through the heating channel and is fixedly connected to the motor drive shaft, and the other end is fixedly connected to the main gear in the intermittent gear set;

[0024] Injection nozzle,

[0025] The injection nozzle is connected to the heating channel;

[0026] Cavity,

[0027] The cavity is sleeved outside the heating channel; an air outlet is opened at the bottom of the cavity, and the number of the air outlet is one; the air outlet is connected to the temperature control component;

[0028] Silo,

[0029] The silo is connected to the heating channel through a pipeline passing through the cavity; a vent hole is provided on one side of the pipeline close to the motor.

[0030] Preferably, the mold assembly comprises:

[0031] The first mold,

[0032] The first mold comprises: a first fixed mold and a first movable mold;

[0033] The first fixed mold is fixedly connected to the base; the first movable mold is hinged to the first fixed mold;

[0034] The second mold,

[0035] The second mold comprises: a second fixed mold and a second movable mold;

[0036] The second fixed mold is fixedly connected to the base; the second movable mold is hinged to the second fixed mold;

[0037] The third mold,

[0038] The third mold comprises: a third fixed mold and a third movable mold;

[0039] The third fixed mold is fixedly connected to the base; the third movable mold is hinged to the third fixed mold;

[0040] The fourth mold,

[0041] The fourth mold is fixedly connected to the base;

[0042] Putter,

[0043] The push rods include a first push rod, a second push rod and a third push rod; the push rods are made of memory metal;

[0044] A first push rod is provided between the first fixed mold side wall and the first movable mold side wall;

[0045] A second push rod is provided between the second fixed mold side wall and the second movable mold side wall;

[0046] A third push rod is provided between the third fixed mold side wall and the third movable mold side wall;

[0047] Injection holes,

[0048] An injection hole is provided on the top of the first movable mold.

[0049] Preferably, the temperature control component comprises:

[0050] Preheating tube,

[0051] The preheating tubes are evenly arranged in the base, and the plurality of preheating tubes are connected with the air outlet holes in sequence under the rotation of the injection molding assembly;

[0052] Cooling pipe,

[0053] A plurality of cooling pipes are provided in the base; the cooling pipes are provided directly below the preheating pipes;

[0054] The cooling pipe comprises: a water inlet pipe and a water outlet pipe; a plurality of the water inlet pipes and the water outlet pipes are sequentially connected to the transmission component under the rotation of the injection molding component;

[0055] The angle between the water inlet pipe and the horizontal plane is 30°; the angle between the water outlet pipe and the horizontal plane is -30°;

[0056] Cooling box,

[0057] The cooling box is located at the bottom of the base and is fixedly connected to the base; the cooling box is provided with a water inlet and a water outlet.

[0058] Preferably, the transmission component comprises:

[0059] Rotating seat,

[0060] The rotating seat is sleeved in the cooling box, and the rotating seat is fixedly connected to the bottom of the inner ring gear of the intermittent gear set; the water outlet pipe runs through the rotating seat; and a fixed shaft is fixedly connected to the top of the rotating seat;

[0061] Cavity,

[0062] A cavity is provided in the rotating seat; the water inlet pipe in the cooling pipe is connected to the cavity obliquely upward after rotating;

[0063] Water outlet,

[0064] A water outlet is provided at the bottom of the rotating seat, and the water outlet pipe is connected to the water outlet obliquely downward after rotating; the water outlet is connected to the cooling box;

[0065] Suction pump,

[0066] The suction pump is located in the cooling box;

[0067] Pumping pipe,

[0068] One end of the water pumping pipe is connected to the suction pump, and the other end is connected to the cavity.

[0069] Preferably, the angle formed by the center line between the cavity and the water outlet and the air outlet of the preheating tube connected to the cavity is 90°.

[0070] Preferably, the memory metal is made of nickel-titanium alloy.

[0071] Preferably, the mold assembly is made of a material with good thermal conductivity.

[0072] Preferably, a fixing bracket is provided on the motor.

[0073] Preferably, a thermal insulation layer is provided on the inner wall of the cavity.

[0074] The beneficial effects of the present invention are as follows:

[0075] 1. The present invention provides a multi-station temperature-controlled injection molding machine. A worker introduces plastic particles into an injection molding component, and controls the injection molding component to heat the plastic particles through a controller, so that the plastic particles are heated into a molten state. While the plastic particles are heated and melted, the waste heat generated by the heating of the injection molding component is transmitted to the mold component through the temperature control component, and the mold component is preheated by the waste heat, thereby improving the utilization rate of the waste heat of the injection molding component in heating the plastic particles and reducing energy consumption.

[0076] 2. The present invention provides a multi-station temperature-controlled injection molding machine. When the injection molding component injects molten plastic into the mold component, cooling water is transmitted to the temperature control component through the transmission component. The cooling water then cools the mold component after injection molding through the temperature control component, thereby reducing the cooling time of the plastic product and improving the efficiency of injection molding of the plastic product. At the same time, the surface temperature of the plastic product is reduced after cooling, which avoids hand burns caused by workers picking up plastic products and ensures the life safety of the workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0077] The present invention will be further described below in conjunction with the accompanying drawings.

[0078] Figure 1 It is the main figure of the present invention;

[0079] Figure 2 It is a front view of the present invention;

[0080] Figure 3 is a side view of the present invention;

[0081] Figure 4 is a cross-sectional view of the present invention;

[0082] Figure 5 It is a schematic diagram of the structure of the preheating tube and the cooling tube;

[0083] Figure 6 It is a schematic diagram of the structure of the cooling pipe and the water inlet pipe;

[0084] Figure 7 It is a schematic diagram of the structure of the cooling pipe and the water outlet pipe;

[0085] Figure 8 It is a schematic diagram of the structure of an intermittent gear set;

[0086] Fig. 9 It is the structural diagram of the rotating seat;

[0087] Fig.10 yes Figure 4 The enlarged view of point A in the middle;

[0088] Fig.11 is a cross-sectional view of the cavity;

[0089] Fig.12 is a closed schematic diagram of the mold assembly;

[0090] Fig.13 is a semi-closed schematic diagram of the mold assembly;

[0091] Fig.14 It is a schematic diagram of the opening and closing of the mold assembly;

[0092] In the figure: base 1, fixing frame 11, motor 6, injection molding component 2, intermittent gear set 21, main gear 211, auxiliary gear 212, inner ring gear 213, fixed shaft 214, heating channel 22, electric heating wire 221, No. 1 auger 23, injection molding nozzle 24, cavity 25, air outlet 251, silo 26, pipeline 261, vent 262, mold assembly 3, first mold 31, first fixed mold 311, first movable mold 312, second mold 32, second fixed mold 3 21. second movable mold 322. third mold 33. third fixed mold 331. third movable mold 332. fourth mold 34. push rod 35. first push rod 351. second push rod 352. third push rod 353. injection hole 36. temperature control component 4. preheating pipe 41. cooling pipe 42. water inlet pipe 421. water outlet pipe 422. cooling box 43. water inlet 44. water outlet 45. transmission component 5. rotating seat 51. cavity 52. ​​water outlet end 53. suction pump 54. water suction pipe 55. DETAILED DESCRIPTION

[0093] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are 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.

[0094] The defects of the multi-station temperature-controlled injection molding machine in the prior art are: using the multi-station injection molding machine, the mold needs to be preheated and cooled separately, not only the mold needs to be preheated, but also the mold needs to be cooled. Since the physical cooling time is generally long and the energy consumption is large, the yield is low;

[0095] In order to solve the above problems, the main concept adopted in this embodiment is: the controller controls the injection molding component 2 to heat the plastic particles so that the plastic particles are heated into a molten state. While the plastic particles are heated and melted, the residual heat generated by the heating of the injection molding component 2 is transmitted to the mold component 3 through the temperature control component 4, and the mold component 3 is preheated by the residual heat. After the plastic particles are melted, the molten plastic is immediately injected into the mold component 3 through the injection molding component 2. The mold temperature of the preheated mold component 3 increases. When the injection molding component 2 injects the molten plastic into the mold component 3, the cooling water is transmitted to the temperature control component 4 through the transmission component 5, and the cooling water immediately cools the mold component 3 after the injection molding is completed through the temperature control component 4;

[0096] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods;

[0097] The present invention provides a multi-station temperature-controlled injection molding machine, comprising: a base 1 and a motor 6; and further comprising:

[0098] Injection molding component 2,

[0099] The injection molding component 2 is rotatably connected to the base 1; the injection molding component 2 is used to inject molten plastic;

[0100] Mold assembly 3,

[0101] The mold assembly 3 is fixedly connected to the base 1, and the mold assembly 3 is used for injection molding the molten plastic;

[0102] Temperature control component 4,

[0103] The temperature control component 4 is located in the base 1, and the temperature control component 4 is used to preheat and cool the mold component 3;

[0104] Transmission component 5,

[0105] The transmission component 5 is located in the base 1, and the transmission component 5 is used to transfer cooling water to the temperature control component 4 to cool the mold component 3;

[0106] When the staff introduces the plastic particles into the injection molding component 2, the controller controls the injection molding component 2 to heat the plastic particles so that the plastic particles are heated into a molten state. While the plastic particles are heated and melted, the residual heat generated by the heating of the injection molding component 2 is transmitted to the mold component 3 through the temperature control component 4. The mold component 3 is preheated by the residual heat, thereby improving the utilization rate of the residual heat of the injection molding component 2 heating the plastic particles and reducing energy consumption;

[0107] After the plastic particles are melted, the molten plastic is then injected into the mold assembly 3 through the injection molding assembly 2. The mold temperature of the preheated mold assembly 3 is increased, which prevents the molten plastic from entering the mold with a lower temperature and causing injection faults, thereby improving the injection molding quality of the plastic product.

[0108] After the injection molding component 2 injects the molten plastic into the mold component 3, the cooling water is transferred to the temperature control component 4 through the transmission component 5, and the cooling water then cools the mold component 3 after injection molding through the temperature control component 4, thereby reducing the cooling time of the plastic product, thereby improving the efficiency of injection molding of the plastic product; at the same time, the surface temperature of the plastic product is reduced after cooling, thereby avoiding hand burns caused by workers picking up the plastic product, thereby ensuring the life safety of the workers;

[0109] In the prior art, when using a multi-station injection molding machine, the mold needs to be preheated and cooled separately. Not only does the mold need to be preheated, but the mold also needs to be cooled. Since the physical cooling time is generally long and the energy consumption is large, the yield rate is low.

[0110] The present invention controls the injection molding component 2 to heat the plastic particles through a controller, so that the plastic particles are heated into a molten state. While the plastic particles are heated and melted, the residual heat generated by the injection molding component 2 is transmitted to the mold component 3 through the temperature control component 4, and the mold component 3 is preheated by the residual heat, thereby improving the utilization rate of the residual heat of the injection molding component 2 for heating the plastic particles and reducing energy consumption.

[0111] After the plastic particles are melted, the molten plastic is then injected into the mold assembly 3 through the injection molding assembly 2. The mold temperature of the preheated mold assembly 3 is increased, which prevents the molten plastic from entering the mold with a lower temperature and causing injection faults, thereby improving the injection molding quality of the plastic product.

[0112] After the injection molding component 2 injects the molten plastic into the mold component 3, the cooling water is transmitted to the temperature control component 4 through the transmission component 5. The cooling water then cools the mold component 3 after injection molding through the temperature control component 4, reducing the cooling time of the plastic product, thereby improving the efficiency of injection molding of the plastic product; at the same time, the surface temperature of the plastic product is reduced after cooling, avoiding hand burns caused by workers picking up plastic products, thereby ensuring the life safety of the workers.

[0113] As a specific embodiment of the present invention, the injection molding component 2 includes:

[0114] Intermittent gear set 21,

[0115] The intermittent gear set 21 is rotatably connected to the base 1; the intermittent gear set 21 comprises: a main gear 211, an auxiliary gear 212 and an inner ring gear 213; a fixed shaft 214 is sleeved inside the auxiliary gear 212, and the upper and lower ends of the fixed shaft 214 are rotatably connected inside the base 1; the main gear 211 and the auxiliary gear 212 are in the shape of half gears, and the inner ring gear 213 is in the shape of full teeth; the number of teeth of the auxiliary gear 212 is one eighth of the number of teeth of the inner ring gear 213;

[0116] Heating channel 22,

[0117] The heating channel 22 is fixedly connected to the inner ring gear 213 in the intermittent gear set 21; an electric heating wire 221 is arranged in the inner wall of the heating channel 22;

[0118] No. 1 Auger 23,

[0119] The first auger 23 is located in the heating channel 22, one end of the rotating shaft of the first auger 23 passes through the heating channel 22 and is fixedly connected to the driving shaft of the motor 6, and the other end is fixedly connected to the main gear 211 in the intermittent gear set 21;

[0120] Injection nozzle 24,

[0121] The injection nozzle 24 is connected to the heating channel 22;

[0122] Cavity 25,

[0123] The cavity 25 is sleeved outside the heating channel 22; an air outlet 251 is opened at the bottom of the cavity 25, and the number of the air outlet 251 is one; the air outlet 251 is connected to the temperature control component 4; the air outlet 251 forms an angle of 45° with the center line of the injection nozzle 24;

[0124] Silo 26,

[0125] The silo 26 is connected to the heating channel 22 through the pipe 261 through the cavity 25; a vent hole 262 is provided on the side of the pipe 261 close to the motor 6; (the cavity 25 is fixedly connected to the inner ring gear 213, and the angle between the injection nozzle 24 and the heating channel 22 and the air outlet 251 and the heating channel 22 is 45 degrees;)

[0126] The staff pours the plastic particles into the silo 26, and the plastic particles in the silo 26 enter the heating channel 22 through the pipe 261. The controller controls the electric heating wire 221 set in the inner wall of the heating channel 22 to start heating. The electric heating wire 221 then heats the plastic particles entering the heating channel 22. At this time, the staff controls the motor 6 to drive through the controller, and the motor 6 drives the No. 1 auger 23 fixedly connected to the driving shaft of the motor 6 to rotate. The No. 1 auger 23 rotates, driving the plastic particles entering the heating channel 22 to move to the side close to the motor 6. During the movement of the plastic particles under the action of the No. 1 auger 23, the plastic particles are melted under the heating action of the heating channel 22. The molten plastic is transported to the injection nozzle 24 under the action of the No. 1 auger, and then the molten plastic is injected into the mold assembly 3 through the injection nozzle 24 for injection molding;

[0127] At the same time, the residual heat of the molten plastic particles in the heating channel 22 is transferred to the pipe 261. Since there may be water stains on the surface of the plastic particles in the pipe 261 when they are poured into the silo 26, the water stains on the surface of the plastic particles in the pipe 261 evaporate to form water vapor under the action of the residual heat of the heating channel 22. The water vapor climbs along the pipe 261 to the side of the silo 26. Since the surface of the pipe 261 is provided with air holes 262, the water vapor encounters the air holes 262 during the climbing process, and then enters the cavity 25 through the air holes 262. The water vapor entering the cavity 25 enters the temperature control component 4 connected to the air holes 251 through the air outlet 251 provided at the bottom of the cavity 25 to preheat the mold component 3, thereby improving the utilization rate of the water vapor formed by the residual heat generated by the heating channel 22, thereby reducing energy consumption.

[0128] At the same time, the molten plastic is injected into the mold assembly 3 through the injection nozzle 24. The mold temperature of the mold assembly 3 preheated by water vapor increases, which avoids the injection fault phenomenon caused by the molten plastic entering the mold with a lower temperature, thereby improving the injection quality of the plastic product; when the injection nozzle 24 completes the injection molding of one of the mold assemblies 3, the motor 6 drives the main gear 211 fixedly connected to the bottom of the No. 1 auger 23 to rotate through the No. 1 auger 23, and the rotation of the main gear 211 drives the auxiliary gear 212 meshed with it to rotate. The auxiliary gear 212 can only rotate on its own under the action of the fixed shaft 214, thereby driving the inner ring gear meshed with the auxiliary gear 212 213 rotates, and the inner ring gear 213 drives the heating channel 22 fixed to the inner ring gear 213 to rotate during the rotation; since the main gear 211 and the auxiliary gear 212 are in the shape of half gears, when the auxiliary gear 212 rotates from the toothed part to the toothless part, the number of teeth of the auxiliary gear 212 is one eighth of the number of teeth of the inner ring gear 213; so that when the auxiliary gear 212 is meshed with the inner ring gear 213 for transmission, the inner ring gear 213 only rotates 45° counterclockwise; at this time, the heating channel 22 rotates 45° counterclockwise with the inner ring gear 213, so that the injection nozzle 24 also rotates 45° counterclockwise and moves to the top of the next mold assembly 3.

[0129] As a specific embodiment of the present invention, the mold assembly 3 includes:

[0130] The first mold 31,

[0131] The first mold 31 includes: a first fixed mold 311 and a first movable mold 312;

[0132] The first fixed mold 311 is fixedly connected to the base 1; the first movable mold 312 is hinged to the first fixed mold 311;

[0133] The second mold 32,

[0134] The second mold 32 includes: a second fixed mold 321 and a second movable mold 322;

[0135] The second fixed mold 321 is fixedly connected to the base 1; the second movable mold 322 is hinged to the second fixed mold 321;

[0136] The third mold 33,

[0137] The third mold 33 includes: a third fixed mold 331 and a third movable mold 332;

[0138] The third fixed mold 331 is fixedly connected to the base 1; the third movable mold 332 is hinged to the third fixed mold 331;

[0139] The fourth mold 34,

[0140] The fourth mold is fixedly connected to the base 1;

[0141] Push rod 35,

[0142] The push rod 35 includes a first push rod 351, a second push rod 352 and a third push rod 353; the push rod 35 is made of memory metal;

[0143] A first push rod 351 is provided between the side wall of the first fixed mold 311 and the side wall of the first movable mold 312;

[0144] A second push rod 352 is disposed between the side wall of the second fixed mold 321 and the side wall of the second movable mold 322;

[0145] A third push rod 353 is provided between the side wall of the third fixed mold 331 and the side wall of the third movable mold 332;

[0146] Injection hole 36,

[0147] The first movable mold 312 has an injection hole 36 at the top;

[0148] The water vapor formed by the residual heat generated by the electric heating wire 221 arranged in the inner wall of the heating channel 22 contacts the first fixed mold 311 in the first mold 31 through the temperature control component 4, and the water vapor transfers the heat to the first fixed mold 311. The first fixed mold 311 is subjected to the heat transfer of the water vapor. Since the first push rod 351 arranged between the side wall of the first fixed mold 311 and the side wall of the first movable mold 312 is made of memory metal, the heat received by the first fixed mold 311 is transferred to the first push rod 351, and the first push rod 351 is stretched and bent by the heat. While the first push rod 351 is bent and stretched, it pushes the connected first movable mold 312 to rotate and close under the action of the hinge rod. There is no need for a controller to control the closing of the first movable mold 312, which further reduces the energy consumption. At the same time, the molten plastic is injected into the mold 311. The nozzle 24 performs injection molding on the cavity formed by the second movable mold 322 and the second fixed mold 321 in the second mold 32. During the injection molding process, the surface temperatures of the second movable mold 322 and the second fixed mold 321 rise after preheating, and the molten plastic will not solidify immediately when injecting the second mold 32, thereby avoiding the injection fault phenomenon caused by the molten plastic entering the mold with a lower temperature, thereby improving the injection molding quality of the plastic product; while the second mold 32 is being injected, the third mold 33 is cooled under the action of the temperature control component 4. As the surface temperature of the third mold 33 is reduced, a third push rod 353 is provided between the side wall of the third fixed mold 331 and the side wall of the third movable mold 332 in the third mold 33 to reset and return, and the third movable mold 332 is then opened and closed under the action of the third push rod 353;

[0149] When the injection molding of the second mold 32 is completed, the injection nozzle 24 moves to the top of the first mold 31 under the rotation of the intermittent gear set 21, and the injection nozzle 24 is aligned with the injection hole 36 opened on the top of the first movable mold 312. The molten plastic in the heating channel 22 then passes through the injection nozzle 24 and the injection hole 36 into the mold cavity formed by the closing of the first fixed mold 311 and the first movable mold 312 for injection molding; at the same time, the temperature control component 4 preheats the fourth mold 34;

[0150] The number of the molds of the present invention is eight, and the angle between the molds is 45°.

[0151] As a specific embodiment of the present invention, the temperature control component 4 includes:

[0152] Preheating tube 41,

[0153] The preheating tubes 41 are evenly arranged in the base 1, and the plurality of preheating tubes 41 are sequentially connected to the air outlet holes 251 under the rotation of the injection molding assembly 2;

[0154] Cooling pipe 42,

[0155] A plurality of cooling pipes 42 are provided in the base 1; the cooling pipes 42 are provided directly below the preheating pipe 41;

[0156] The cooling pipe 42 includes: a water inlet pipe 421 and a water outlet pipe 422; the plurality of water inlet pipes 421 and water outlet pipes 422 are sequentially connected to the transmission component 5 under the rotation of the injection molding component 2;

[0157] The angle between the water inlet pipe 421 and the horizontal plane is 30°; the angle between the water outlet pipe 422 and the horizontal plane is -30°;

[0158] Cooling box 43,

[0159] The cooling box 43 is located at the bottom of the base 1 and is fixed to the base 1; the cooling box 43 is provided with a water inlet 44 and a water outlet 45;

[0160] When the molten plastic is injected into the second mold 32 through the injection nozzle 24, at this time, the preheating pipe 41 opened in the bottom base 1 of the first mold 31 is connected to the air outlet 251 opened in the bottom of the cavity 25, and the preheating pipes 41 opened in the bottom base 1 of the remaining molds are in a closed state; at the same time, the water inlet pipe 421 and the water outlet pipe 422 in the cooling pipe 42 opened in the bottom base 1 of the third mold 33 are connected to the transmission component 5, and the cooling pipes 42 opened in the bottom base 1 of the remaining molds are in a closed state;

[0161] The water vapor in the cavity 25 enters only the preheating tube 41 connected to the cavity 25 through the air outlet 251 opened at the bottom of the cavity 25. The water vapor entering the preheating tube 41 enters the first fixed mold 311 in the first mold 31 through the preheating tube 41 to preheat the first fixed mold 311. The first fixed mold 311 affected by the heat of the water vapor transfers the heat to the first push rod 351. The first push rod 351 bends and stretches under the heat to push the connected first movable mold 312 to close. There is no need for a controller to control the closing of the first movable mold 312, which further reduces energy consumption. At the same time, the water vapor preheated on the first fixed mold 311 through the preheating tube 41 transfers the heat to the first fixed mold 311, so that the temperature of the first fixed mold 311 is increased, so as to avoid the injection fault phenomenon caused by the molten plastic entering the mold with a lower temperature, thereby improving the injection quality of the plastic product.

[0162] At the same time, the cooling water entering the cooling box 43 through the water inlet 44 is pumped into the cooling pipe 42 opened in the bottom base 1 of the third mold 33 that has completed injection molding under the action of the transmission component 5. The cooling water enters the cooling pipe 42 from the water inlet pipe 421 in the cooling pipe 42 through the transmission component 5. The cooling water entering the cooling pipe 42 contacts the fixed mold 34 through the cooling pipe 42 to take away the heat of the mold assembly 3. The cooling water after heat exchange passes through the water outlet pipe 422 in the cooling pipe 42 and penetrates the transmission component 5 into the cooling box 43 for circulating cooling; (that is, the water outlet end 53 is connected with the lower end of the rotating seat 51) after cooling by cooling water The surface temperature of the plastic product in the mold assembly 3 is reduced and solidified, which further reduces the cooling time of the plastic product and further improves the efficiency of plastic product injection molding; at the same time, the surface temperature of the plastic product is reduced after cooling, which further avoids hand burns caused by workers picking up plastic products, and further ensures the life safety of workers; at the same time, the heat in the mold that has completed injection molding is taken away by cooling water, and the push rod 35 set on the outer wall of the mold is cooled and reset to return. The push rod 35 cools and shrinks, pulling the closed mold to open under the action of the rotation of the hinge rod, which saves the time of the workers to open the movable mold 35 to take out the plastic product;

[0163] The staff can discharge the cooling water through the water outlet 45 and then replace the cooling water through the water inlet 44.

[0164] As a specific embodiment of the present invention, the transmission component 5 includes:

[0165] Rotating seat 51,

[0166] The rotating seat 51 is sleeved in the cooling box 43, and the rotating seat 51 is fixedly connected to the bottom of the inner ring gear 213 of the intermittent gear set 21; the water outlet pipe 422 passes through the rotating seat 51;

[0167] Cavity 52,

[0168] A cavity 52 is formed in the rotating seat 51; the water inlet pipe 421 in the cooling pipe 42 is connected to the cavity 52 after rotating obliquely upward;

[0169] Water outlet 53,

[0170] The bottom of the rotating seat 51 is provided with a water outlet 53, and the water outlet pipe 422 is connected to the water outlet 53 obliquely downward after rotation; the water outlet 53 is connected to the cooling box 43; (the cavity 52 on the rotating seat 51 and the water outlet 53 are respectively connected to the water inlet pipe 421 and the water blowing pipe 422 of the same cooling pipe 42 at the same time after rotation)

[0171] Suction pump 54,

[0172] The suction pump 54 is located in the cooling box 43;

[0173] Pumping pipe 55,

[0174] One end of the water pumping pipe 55 is connected to the suction pump 54, and the other end is connected to the cavity 52;

[0175] When the molten plastic completes the injection molding of the second mold 32 through the injection nozzle 24, the injection molding assembly 2 rotates to the top of the first mold 31 along with the inner ring gear 213 of the intermittent gear set 21 under the action of the motor 6, and the rotating seat 51 fixed to the bottom of the inner ring gear 213 of the intermittent gear set 21 also rotates. At this time, the cavity 52 opened in the rotating seat 51 is connected to the water inlet pipe 421 in the cooling pipe 42 opened in the bottom base of the second mold 32, and the water outlet end 53 opened at the bottom of the rotating seat 51 is connected to the water outlet pipe 422 in the cooling pipe 42 opened in the bottom base 1 of the second mold 32; the staff controls the suction pump 54 in the cooling box 43 to start through the controller, and the suction pump 54 immediately draws the cooling water in the cooling box 43 into the cavity 52 through the suction pipe 55 connected to the suction pump 54; the cooling water entering the cavity 52 enters the cooling pipe 42 and the second fixed portion 122 in the second mold 32 where the injection molding has been completed through the water inlet pipe 421 in the connected cooling pipe 42. The cooling water after heat exchange immediately enters the water outlet pipe 422 in the cooling tube 42 and is discharged into the cooling box 43 through the water outlet end 53 connected with the water outlet pipe 422 and opened at the bottom of the rotating seat 51; the injection molding of the molten plastic is accelerated, the cooling time of the plastic products is further reduced, and the efficiency of the injection molding of the plastic products is further improved; at the same time, the surface temperature of the plastic products is reduced after cooling, which further avoids hand burns caused by the staff taking the plastic products, and further ensures the life safety of the staff; at the same time, the heat in the second fixed mold 321 and the second movable mold 322 that have completed the injection molding is taken away by the cooling water, and the second push rod 352 arranged between the side walls of the second fixed mold 321 and the second movable mold 322 is cooled and reset, and the second push rod 352 cools and shrinks to pull the closed movable mold 35 to open under the action of the rotation of the hinge rod; the time for the staff to open the mold and take out the plastic products is saved.

[0176] As a specific embodiment of the present invention, the angle formed by the center line between the cavity 52 and the water outlet end 53 and the air outlet hole 251 of the preheating tube 41 connected to the cavity 25 is 90°;

[0177] When the molten plastic is injected through the injection nozzle 24, since the angle formed by the center line between the cavity 52 and the water outlet end 53 and the air outlet hole 251 of the preheating pipe 41 connected to the cavity 25 is 90 degrees, and they are not connected to each other and do not interfere with each other, when the second mold 32 is injected through the injection nozzle 24, the water vapor generated by the residual heat of the electric heating wire 221 arranged in the inner wall of the heating channel 22 passes through the air outlet hole 251 opened at the bottom of the cavity 25, and only enters the preheating pipe 41 connected to the cavity 25 to preheat the first mold 31. Heat; at the same time, the cooling water in the cooling box 43 enters the cavity 52 under the action of the suction pump 54, and cools the third mold 33 along the cooling pipe 42 connected to the cavity 52. ​​The present invention preheats the next mold assembly 3 to be injected and cools the mold assembly 3 that has been injected while the injection molding component 2 is being injected, which further saves energy consumption and further improves energy utilization; further saves the time for injection molding of plastic products, further improves the efficiency of injection molding of plastic products, and further improves the quality of plastic products.

[0178] As a specific implementation of the present invention, the memory metal is made of nickel-titanium alloy;

[0179] When the second mold 32 is injection molded, the first push rod 351 is heated, bent and elongated by the heat transfer from the water vapor to the first fixed mold 311. Since the memory metal used by the push rod 35 is made of nickel-titanium alloy, the nickel-titanium alloy has good plasticity and a strong thermal expansion rate. Under the heat transfer from the water vapor, the first push rod 351 can be heated, stretched and bent faster to close the first fixed mold 311, without the need for a controller to control the closing of the movable mold 35, further reducing energy consumption.

[0180] As a specific embodiment of the present invention, the mold assembly 3 is made of a material with good thermal conductivity;

[0181] Since the mold assembly 3 needs to transfer the heat of the water vapor to the mold to preheat the mold and cool the injection molded plastic product, the mold assembly 3 is made of a material with good thermal conductivity, so that the mold assembly 3 can quickly exchange heat through water vapor or cooling water, further improving the efficiency of plastic product injection molding;

[0182] The material with good thermal conductivity in the present invention is preferably copper-containing steel, but is not limited to this. Copper-containing steel has good thermal conductivity and corrosion resistance. Under the heat exchange effect of water vapor and cooling water, copper-containing steel can exchange heat faster, and copper-containing steel will not be corroded by molten plastic during the injection molding process, further improving the efficiency of plastic product injection molding and further improving the quality of plastic product injection molding.

[0183] As a specific embodiment of the present invention, a fixing frame 11 is provided on the motor 6 (one end of the fixing frame 11 is fixedly connected to the motor 6, and the other end is fixedly connected to the outer wall of the base 1);

[0184] When the motor 6 is rotating, the motor 6 will vibrate, which may cause the injection nozzle 24 of the injection molding component 2 to be offset from the mold position during the injection molding of the mold component 3, thereby causing incomplete injection. Since a fixing frame 11 is provided on the motor 6, the fixing frame 11 fixes the motor 6 during the rotation of the motor 6, thereby avoiding incomplete injection of the injection molding component 2 due to the vibration of the motor 6, and further improving the injection molding quality of the plastic product.

[0185] As a specific embodiment of the present invention, the inner wall of the cavity 25 is provided with a heat-insulating layer;

[0186] When the waste heat generated by the heating channel 22 passes through the pipe 261, the water stains remaining on the surface of the plastic particles in the pipe 261 are evaporated to form water vapor. The water vapor rises upward along the pipe 261. During the rising process, the water vapor encounters the vent 262 opened on the surface of the pipe 261. The water vapor then enters the cavity 25 through the vent 262. Since the inner wall of the cavity 25 is provided with a thermal insulation layer, the water vapor generated by the waste heat of the heating channel 22 keeps the heat from being lost under the action of the thermal insulation layer provided on the inner wall of the cavity 25, thereby ensuring the temperature of the water vapor when preheating the mold assembly 3, and further reducing energy waste.

[0187] The specific workflow is as follows:

[0188] The staff pours the plastic particles into the silo 26, and the plastic particles in the silo 26 enter the heating channel 22 through the pipe 261. The controller controls the electric heating wire 221 set in the inner wall of the heating channel 22 to start heating. The electric heating wire 221 then heats the plastic particles entering the heating channel 22. At this time, the staff controls the motor 6 to drive through the controller, and the motor 6 drives the No. 1 auger 23 fixedly connected to the driving shaft of the motor 6 to rotate. The No. 1 auger 23 rotates, driving the plastic particles entering the heating channel 22 to move to the side close to the motor 6. During the movement of the plastic particles under the action of the No. 1 auger 23, the plastic particles are melted under the heating action of the heating channel 22. The molten plastic is transported to the injection nozzle 24 under the action of the No. 1 auger, and then the molten plastic is injected into the mold assembly 3 through the injection nozzle 24 for injection molding;

[0189] At the same time, the residual heat of the molten plastic particles in the heating channel 22 is transferred to the pipe 261. Since there may be water stains on the surface of the plastic particles in the pipe 261 when they are poured into the silo 26, the water stains on the surface of the plastic particles in the pipe 261 evaporate to form water vapor under the action of the residual heat of the heating channel 22. The water vapor climbs along the pipe 261 to the side of the silo 26. Since the surface of the pipe 261 is provided with air holes 262, the water vapor encounters the air holes 262 during the climbing process, and then enters the cavity 25 through the air holes 262. The water vapor entering the cavity 25 enters the temperature control component 4 connected with the air holes 251 through the air outlet 251 provided at the bottom of the cavity 25 to preheat the mold component 3.

[0190] The water vapor formed by the residual heat generated by the electric heating wire 221 arranged in the inner wall of the heating channel 22 contacts the first fixed mold 311 in the first mold 31 through the temperature control component 4, and the water vapor transfers the heat to the first fixed mold 311. The first fixed mold 311 is subjected to the heat transfer of the water vapor. Since the first push rod 351 arranged between the side wall of the first fixed mold 311 and the side wall of the first movable mold 312 is made of memory metal, the heat received by the first fixed mold 311 is transferred to the first push rod 351, and the first push rod 351 is elongated and bent by the heat. While the first push rod 351 is bent and elongated, it pushes the connected first movable mold 312 to rotate and close under the action of the hinge rod, and there is no need for a controller to control the closing of the first movable mold 312. At the same time, the molten plastic is injected into the cavity formed by the closing of the second movable mold 322 and the second fixed mold 321 in the second mold 32 through the injection nozzle 24. During the injection molding process, the surface temperature of the second movable mold 322 and the second fixed mold 321 after preheating is completed rises, and the molten plastic will not solidify immediately when injecting the second mold 32;

[0191] When the molten plastic is injected into the second mold 32 through the injection nozzle 24, at this time, the preheating pipe 41 opened in the bottom base 1 of the first mold 31 is connected to the air outlet 251 opened in the bottom of the cavity 25, and the preheating pipes 41 opened in the bottom base 1 of the remaining molds are in a closed state; at the same time, the water inlet pipe 421 and the water outlet pipe 422 in the cooling pipe 42 opened in the bottom base 1 of the third mold 33 are connected to the transmission component 5, and the cooling pipes 42 opened in the bottom base 1 of the remaining molds are in a closed state;

[0192] The water vapor in the cavity 25 enters only the preheating tube 41 connected to the cavity 25 through the air outlet 251 opened at the bottom of the cavity 25. The water vapor entering the preheating tube 41 enters the first fixed mold 311 in the first mold 31 through the preheating tube 41 to preheat the first fixed mold 311. The first fixed mold 311 affected by the heat of the water vapor transfers the heat to the first push rod 351. The first push rod 351 bends and stretches under the heat to push the connected first movable mold 312 to close. There is no need for a controller to control the closing of the first movable mold 312, which further reduces energy consumption. At the same time, the water vapor preheated on the first fixed mold 311 through the preheating tube 41 transfers the heat to the first fixed mold 311, so that the temperature of the first fixed mold 311 is increased, so as to avoid the injection fault phenomenon caused by the molten plastic entering the mold with a lower temperature, thereby improving the injection quality of the plastic product.

[0193] At the same time, the cooling water entering the cooling box 43 through the water inlet 44 is pumped into the cooling pipe 42 opened in the bottom base 1 of the third mold 33 that has completed injection molding under the action of the transmission component 5. The cooling water enters the cooling pipe 42 from the water inlet pipe 421 in the cooling pipe 42 through the transmission component 5. The cooling water entering the cooling pipe 42 contacts the fixed mold 34 through the cooling pipe 42, takes away the heat of the mold assembly 3, and the cooling water after heat exchange passes through the water outlet pipe 422 in the cooling pipe 42 and penetrates the transmission component 5 into the cooling box 43 for circulating cooling; the surface temperature of the plastic product in the mold assembly 3 cooled by the cooling water is reduced and solidified, which further reduces the cooling time of the plastic product and further improves the efficiency of injection molding of the plastic product; at the same time, the surface temperature of the plastic product is reduced after cooling, which further avoids hand burns caused by the staff taking the plastic product, and further ensures the life safety of the staff; at the same time, the heat in the mold that has completed injection molding is taken away by the cooling water, and the push rod 35 set on the outer wall of the mold is cooled and reset, and the push rod 35 is cooled and contracted to pull the closed mold to open under the action of the rotation of the hinge rod;

[0194] When the injection nozzle 24 completes the injection molding of one of the mold assemblies 3, the motor 6 drives the main gear 211 fixedly connected to the bottom of the No. 1 auger 23 to rotate through the No. 1 auger 23, and the rotation of the main gear 211 drives the auxiliary gear 212 meshing with it to rotate. The auxiliary gear 212 can only rotate on its own under the action of the fixed shaft 214, thereby driving the inner ring gear 213 meshing with the auxiliary gear 212 to rotate, and the inner ring gear 213 rotates, which drives the heating channel 22 fixedly connected to the inner ring gear 213 to rotate. Since the main gear 211 and the auxiliary gear 212 are in the shape of half gears, when the auxiliary gear 212 rotates from the toothed portion to the toothless portion, the number of teeth of the auxiliary gear 212 is one eighth of the number of teeth of the inner ring gear 213; so that when the auxiliary gear 212 is meshed with the inner ring gear 213, the inner ring gear 213 only rotates 45° counterclockwise; at this time, the heating channel 22 rotates 45° counterclockwise with the inner ring gear 213, so that the injection nozzle 24 also rotates 45° counterclockwise and moves to the top of the next mold assembly 3;

[0195] The molten plastic is injected into the second mold 32 through the injection nozzle 24. The injection molding assembly 2 rotates to the top of the first mold 31 along with the inner ring gear 213 of the intermittent gear set 21 under the action of the motor 6. At the same time, the rotating seat 51 fixedly connected to the bottom of the inner ring gear 213 of the intermittent gear set 21 also rotates. At this time, the cavity 52 opened in the rotating seat 51 is connected to the water inlet pipe 421 in the cooling pipe 42 opened in the bottom base of the second mold 32, and the water outlet end 53 opened at the bottom of the rotating seat 51 is connected to the water outlet pipe 422 in the cooling pipe 42 opened in the bottom base 1 of the second mold 32; the staff controls the suction pump 54 in the cooling box 43 to start through the controller, and the suction pump 54 immediately draws the cooling water in the cooling box 43 into the cavity 52 through the suction pipe 55 connected to the suction pump 54; the cooling water entering the cavity 52 enters the cooling pipe 42 and the second fixed portion in the second mold 32 where the injection molding has been completed through the water inlet pipe 421 in the connected cooling pipe 42. The cooling water after heat exchange immediately enters the water outlet pipe 422 in the cooling tube 42 and is discharged into the cooling box 43 through the water outlet end 53 connected with the water outlet pipe 422 and opened at the bottom of the rotating seat 51; the injection molding of the molten plastic is accelerated, the cooling time of the plastic products is further reduced, and the efficiency of the injection molding of the plastic products is further improved; at the same time, the surface temperature of the plastic products is reduced after cooling, which further avoids hand burns caused by the staff taking the plastic products, and further ensures the life safety of the staff; at the same time, the heat in the second fixed mold 321 and the second movable mold 322 that have completed the injection molding is taken away by the cooling water, and the second push rod 352 arranged between the side walls of the second fixed mold 321 and the second movable mold 322 is cooled and reset, and the second push rod 352 cools and shrinks to pull the closed movable mold 35 to open under the action of the rotation of the hinge rod; the time for the staff to open the mold and take out the plastic products is saved.

[0196] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A multi-station temperature-controlled injection molding machine, characterized in that: include: A base (1) and a motor (6); further comprising: an injection molding component (2), the injection molding component (2) being rotatably connected to the base (1); the injection molding component (2) being used to inject molten plastic; a mold component (3), the mold component (3) being fixedly connected to the base (1), the mold component (3) being used to injection mold the molten plastic; a temperature control component (4), the temperature control component (4) being located in the base (1), the temperature control component (4) being used to preheat and cool the mold component (3); a transmission component (5), the transmission component (5) being located in the base (1), the transmission component (5) being used to transfer cooling water to the temperature control component (4) to cool the mold component (3); The injection molding component (2) comprises: an intermittent gear set (21), the intermittent gear set (21) being rotatably connected to the base (1); the intermittent gear set (21) comprising: a main gear (211), an auxiliary gear (212) and an inner ring gear (213); a fixed shaft (214) is sleeved inside the auxiliary gear (212), and the upper and lower ends of the fixed shaft (214) are rotatably connected inside the base (1); the main gear (211) and the auxiliary gear (212) are in the shape of half gears, and the inner ring gear (213) is in the shape of full teeth; the number of teeth of the auxiliary gear (212) is one eighth of the number of teeth of the inner ring gear (213); a heating channel (22), the heating channel (22) being fixedly connected to the inner ring gear (213) in the intermittent gear set (21); an electric heating wire (221) is arranged inside the inner wall of the heating channel (22); a No. 1 auger (23), the A first auger (23) is located in the heating channel (22), one end of the rotating shaft of the first auger (23) passes through the heating channel (22) and is fixed to the driving shaft of the motor (6), and the other end is fixed to the main gear (211) in the intermittent gear set (21); an injection nozzle (24), the injection nozzle (24) is connected to the heating channel (22); a cavity (25), the cavity (25) is sleeved outside the heating channel (22); the bottom of the cavity (25) An air outlet (251) is provided, and the number of the air outlet (251) is one; the air outlet (251) is connected to the temperature control component (4); the air outlet (251) forms an angle of 45° with the center line of the injection nozzle (24); a material bin (26), the material bin (26) is connected to the heating channel (22) through a pipeline (261) passing through the cavity (25); a vent hole (262) is provided on a side of the pipeline (261) close to the motor (6); The mold assembly (3) comprises: a first mold (31), the first mold (31) comprising: a first fixed mold (311) and a first movable mold (312); the first fixed mold (311) is fixedly connected to the base (1); the first movable mold (312) is hinged to the first fixed mold (311); a second mold (32), the second mold (32) comprising: a second fixed mold (321) and a second movable mold (322); the second fixed mold (321) is fixedly connected to the base (1); the second movable mold (322) is hinged to the second fixed mold (321); a third mold (33), the third mold (33) comprising: a third fixed mold (331) and a third movable mold (332); the third fixed mold (331) is fixedly connected to the base (1); the third movable mold (3 32) is hinged to the third fixed mold (331); a fourth mold (34), the fourth mold is fixedly connected to the base (1); a push rod (35), the push rod (35) comprises a first push rod (351), a second push rod (352) and a third push rod (353); the push rod (35) is made of memory metal; the first push rod (351) is arranged between the side wall of the first fixed mold (311) and the side wall of the first movable mold (312); the second push rod (352) is arranged between the side wall of the second fixed mold (321) and the side wall of the second movable mold (322); the third push rod (353) is arranged between the side wall of the third fixed mold (331) and the side wall of the third movable mold (332); an injection hole (36), the top of the first movable mold (312) is provided with an injection hole (36); The temperature control component (4) comprises: a preheating tube (41), the preheating tube (41) being evenly arranged in the base (1), and the plurality of preheating tubes (41) being sequentially connected to the air outlet (251) under the rotation of the injection molding component (2); a cooling tube (42), the base (1) being provided with a plurality of cooling tubes (42); the cooling tube (42) being arranged directly below the preheating tube (41); the cooling tube (42) comprising: a water inlet tube (421) and a water outlet tube ( 422); the plurality of water inlet pipes (421) and water outlet pipes (422) are sequentially connected to the transmission component (5) under the rotation of the injection molding component (2); the angle between the water inlet pipe (421) and the horizontal plane is 30°; the angle between the water outlet pipe (422) and the horizontal plane is -30°; a cooling box (43), the cooling box (43) is located at the bottom of the base (1) and is fixedly connected to the base (1); the cooling box (43) is provided with a water inlet (44) and a water outlet (45).

2. A multi-station temperature-controlled injection molding machine according to claim 1, characterized in that: The transmission component (5) comprises: a rotating seat (51), the rotating seat (51) is sleeved in a cooling box (43), the rotating seat (51) is fixedly connected to the bottom of the inner ring gear (213) of the intermittent gear set (21); the water outlet pipe (422) passes through the rotating seat (51); a cavity (52), the rotating seat (51) is provided with a cavity (52); the water inlet pipe (421) in the cooling pipe (42) is connected to the cavity obliquely upward after rotating. (52); a water outlet (53), the bottom of the rotating seat (51) is provided with a water outlet (53), and the water outlet pipe (422) is connected to the water outlet (53) obliquely downward after rotation; the water outlet (53) is connected to the cooling box (43); a suction pump (54), the suction pump (54) is located in the cooling box (43); a water pump (55), one end of the water pump (55) is connected to the suction pump (54), and the other end is connected to the cavity (52).

3. A multi-station temperature-controlled injection molding machine according to claim 2, characterized in that: The angle formed by the center line between the cavity (52) and the water outlet end (53) and the air outlet hole (251) of the preheating tube (41) connected to the cavity (25) is 90 degrees.

4. The multi-station temperature-controlled injection molding machine according to claim 1, characterized in that: The memory metal is made of nickel-titanium alloy.

5. The multi-station temperature-controlled injection molding machine according to claim 1, characterized in that: The mold assembly (3) is made of a material with good thermal conductivity.

6. The multi-station temperature-controlled injection molding machine according to claim 1, characterized in that: A fixing frame (11) is arranged on the motor (6).

7. The multi-station temperature-controlled injection molding machine according to claim 1, characterized in that: The inner wall of the cavity (25) is provided with a heat-insulating layer.

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