A vertical injection molding machine

Abstract

The present invention discloses a vertical injection molding machine, belonging to the technical field of injection molding equipment, which includes: a base, an injection molding mechanism and a molding mechanism. The injection molding mechanism includes: an injection barrel and an injection screw. The injection screw is rotatably installed in the injection barrel. A heating ring is fixedly sleeved on the outer side of the injection barrel, and a counterweight mechanism is arranged on both sides of the injection barrel; the molding mechanism includes: a molding die, a fixing plate and a cooling box. A molding groove is arranged on one side of the molding die, and the fixing plate is fixedly installed on the top of the base. The present invention can realize automatic injection molding, forming and blanking through the provided injection molding mechanism and molding mechanism. Through the provided cooling box and cooling pipes, the cooling intensity can be gradually reduced according to the progress of the cooling work, so as to ensure the forming speed and avoid quality problems at the same time. Through the provided counterweight mechanism, the gravity balance of the injection molding raw materials and the injection molding mechanism can be realized, so as to reduce the energy consumed for controlling its lifting, achieving the effect of energy saving.

Description

Technical Field

[0001] The present invention relates to the technical field of injection molding equipment, and particularly to a vertical injection molding machine. Background Art

[0002] A vertical injection molding machine is a mechanical device. It is usually composed of an injection system, a mold clamping system, a hydraulic transmission system, an electrical control system, a lubrication system, a heating and cooling system, a safety monitoring system, etc. The injection system is one of the most important components of the injection molding machine. Generally, there are 3 main forms: plunger type, screw type, and screw pre-plasticizing plunger injection type. The most widely used is the screw type. Its function is that in one cycle of the injection molding machine, it can heat and plasticize a certain amount of plastic within a specified time, and then inject the molten plastic into the mold cavity through the screw under a certain pressure and speed.

[0003] During the injection molding process, cooling not only needs to adapt to the temperature change of the material inside the mold, but also needs to cooperate with the curing process to avoid problems such as deformation, warping, or incomplete curing. Currently, conventional injection molding machines generally use a constant cooling rate to cool the injection mold. Too fast cooling may cause stress concentration inside the product or surface quality problems, while too slow a cooling rate will delay the cooling time required;

[0004] And currently, during the injection molding process of conventional vertical injection molding machines, it is necessary to drive the stamping material and the injection mechanism to move up and down. In this process, work needs to be done to overcome the above structures, resulting in waste of energy; Therefore, we propose a vertical injection molding machine to solve this problem. Summary of the Invention

[0005] The purpose of the present invention is to provide a vertical injection molding machine to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A vertical injection molding machine, comprising: a base, an injection mechanism, and a molding mechanism. The injection mechanism includes: an injection barrel and an injection screw. The injection screw is rotatably installed inside the injection barrel. A heating ring is fixedly sleeved outside the injection barrel. Counterweight mechanisms are provided on both sides of the injection barrel;

[0008] The molding mechanism includes: a molding die, a fixing plate, and a cooling box. A molding groove is provided on one side of the molding die. The fixing plate is fixedly installed on the top of the base. A first electric push rod is fixedly installed on one side of the fixing plate, and the output end of the first electric push rod is fixedly connected to the other side of the molding die. A plurality of cooling channels are provided on the front side of the molding die. Vertical pipes are provided on both the front and rear sides of the molding die. A plurality of cooling pipes are communicated on one side of the two vertical pipes close to each other. The other end of the cooling pipe is communicated with the corresponding cooling channel. A horizontal pipe is communicated on one side of the vertical pipe. Water inlet pipes and water outlet pipes are respectively slidably and sealingly sleeved on the outer sides of the two horizontal pipes. A water pump is fixedly installed on the front side of the cooling box, and the water outlet of the water pump is communicated with one end of the water inlet pipe;

[0009] Two sets of the molding mechanisms are provided, and two molding grooves form an injection mold cavity.

[0010] Preferably, a connecting rod is fixedly installed on the outer side of the molding die. The other end of the connecting rod extends into the cooling box and is fixedly installed with a piston plate. One side of the cooling box is fixedly connected to the fixing plate. The other side of the cooling box is communicated with an inlet pipe and an outlet pipe. A first one-way valve and a second one-way valve are respectively arranged in the inlet pipe and the outlet pipe. The other end of the water outlet pipe is communicated with the rear side of the cooling box. A water suction pipe is communicated in the water inlet of the water pump, and the other end of the water suction pipe is communicated with the front side of the cooling box;

[0011] Stabilizing plates are fixedly installed on both the front and rear sides of the molding die, and the horizontal pipe is fixedly inserted into the corresponding stabilizing plate.

[0012] Preferably, a stepped hole is provided on the side wall of the molding groove. A push plate is slidably installed in the stepped hole. One end of the push plate extends to the outside of the molding die and is fixedly installed with a vertical plate. The vertical plate is slidably sleeved on the outer side of the connecting rod, and a compression spring is fixedly installed between the vertical plate and the molding die.

[0013] Preferably, a guiding column is fixedly installed on the outer side of the molding die. The guiding column is slidably installed in the fixing plate. A blanking hole is provided at the bottom of the base, and support legs are fixedly installed at the four corners of the bottom of the base.

[0014] Preferably, a mounting plate is fixedly sleeved on the outer side of the injection barrel. A top plate is fixedly installed on the top of the fixing plate. A second electric push rod is fixedly installed on the top of the top plate. A pressure sensor is fixedly installed on the output end of the second electric push rod. The pressure sensor is fixedly installed at the bottom of the mounting plate. A feed pipe is communicated at the rear side of the injection barrel. The top end of the feed pipe is communicated with a feed hopper. A driving motor is fixedly installed on the top of the injection barrel, and the top of the injection screw is fixedly installed on the output shaft of the driving motor.

[0015] Preferably, the counterweight mechanism includes a counterweight plate, a vertical plate, and a rotating arm. A suspension rod is fixedly installed at the top of the counterweight plate. The top end of the suspension rod is hinged to one end of the rotating arm. The other end of the rotating arm is hinged with a hinge plate. The hinge plate is fixedly installed at the top of the mounting plate. The vertical plate is fixedly installed at the top of the top plate. A third electric push rod is fixedly installed on one side of the vertical plate. An adjusting plate is fixedly installed at the output end of the third electric push rod. A bracket is fixedly installed at the top of the adjusting plate. A sleeve plate is rotatably installed in the bracket. The sleeve plate is slidably sleeved on the outside of the rotating arm.

[0016] Preferably, a connecting column is fixedly installed on one side of the vertical plate. The adjusting plate is slidably sleeved on the outside of the connecting column. The other end of the connecting column is fixedly installed with a baffle. A touch button is fixedly installed on the side of the baffle close to the vertical plate.

[0017] Preferably, a controller is fixedly installed on the front side of the base. An alarm is fixedly installed at the top of the mounting plate. The controller is in signal connection with the pressure sensor, the touch button, the third electric push rod, and the alarm. When the touch button is pressed, the controller controls the alarm to start. When the pressure value monitored by the pressure sensor increases, the controller controls the output end of the third electric push rod to contract. When the pressure value monitored by the pressure sensor decreases, the controller controls the output end of the third electric push rod to extend.

[0018] Preferably, a temperature sensor is fixedly installed on one side of the cooling box. The temperature sensor, the water pump, the second electric push rod, and the first electric push rod are in signal connection with the controller. When the temperature sensor monitors that the temperature rises, the controller controls the power of the water pump to decrease. When the temperature sensor monitors that the temperature reaches the preset value, the controller controls the output end of the first electric push rod to contract. A stabilizing ring is fixedly installed at the top of the injection barrel. The feeding hopper is fixedly installed in the stabilizing ring. A heat preservation barrel is fixedly installed on the outside of the injection barrel. The heat preservation barrel is fixedly sleeved on the outside of the heating ring.

[0019] The beneficial effects of the present invention are as follows:

[0020] In the present invention, for the described vertical injection molding machine, plastic particles are placed into the feed hopper, enabling the plastic particles to enter the feed pipe and then into the injection barrel. By starting the driving motor to drive the injection screw to rotate, the downward transportation of the plastic particles is achieved. The plastic particles are heated by starting the heating ring to melt them. Then, the injection screw conveys the melted plastic into the molding cavity. Next, the second electric push rod is started to drive the mounting plate and the injection barrel to move upward, separating the injection barrel from the injection mold. Then, the water pump is started to pump the water in the cooling tank out through the water suction pipe and introduce it into the front horizontal pipe and vertical pipe through the water outlet pipe. Then, it is introduced into the cooling flow path through the cooling pipe, and then led back into the water outlet pipe through the rear vertical pipe and horizontal pipe, and the water is led back into the cooling tank through the water outlet pipe. When the water flows through the cooling flow path, it can cool the injection mold, thereby accelerating the curing of the plastic. As the cooling progresses, the temperature of the water in the cooling tank rises after cyclic transportation and cooling, resulting in a gradual decrease in the cooling rate of the injection mold, thus avoiding quality problems caused by stress concentration inside the plastic;

[0021] In the present invention, for the described vertical injection molding machine, the temperature in the water tank is monitored by a temperature sensor. When the monitored temperature reaches the preset value, the controller controls the first electric push rod to start. The first electric push rod drives the two injection molds to move away from each other, achieving the separation of the two injection molds. At this time, the molded plastic part will remain in the molding groove of one of the injection molds. When the vertical plate contacts the fixed plate, the vertical plate stops moving, and the two injection molds continue to move away from each other, thereby ejecting the molded plastic part through the push plate and dropping it through the blanking hole to achieve automatic discharging. At the same time, the injection mold drives the piston plate to move horizontally in the cooling tank through the connecting rod, thereby discharging the heated cooling wastewater from the outlet pipe. Then, the first electric push rod is started to drive the two injection molds to move closer to each other to reset, and at the same time, the two piston plates are driven to move closer to each other, introducing new cooling water from the inlet pipe into the cooling tank for the next cooling operation;

[0022] In the present invention, a vertical injection molding machine described herein balances the weight of the injection molding mechanism and the weight of the plastic particles through a counterweight plate, so that the pressure value monitored by the pressure sensor is close to zero. When the plastic particles are added, the pressure value monitored by the pressure sensor increases. The controller controls the output end of the third electric push rod to contract and drive the adjustment plate to move toward the side close to the vertical plate. The adjustment plate drives the sleeve plate to move toward the side close to the hinge plate through the bracket, so that the distance between the adjustment plate and the counterweight plate increases, thereby increasing the weight of the counterweight plate, relative to the force arm generated by the bracket, thereby re-forming a balanced state. During the injection molding process, as the plastic particles are consumed, the pressure value monitored by the pressure sensor decreases. The controller controls the output end of the third electric push rod to extend, driving the adjustment plate to move to the right to achieve leveling. Therefore, when the second electric push rod controls the injection molding mechanism and the plastic particles to rise and fall, the work to be done to overcome gravity is very small, thereby avoiding energy waste. When the adjustment plate contacts the touch button, the controller controls the alarm to start, thereby reminding the staff to add plastic particles in the feed hopper.

[0023] In the present invention, in a vertical injection molding machine, at the initial stage of injection molding, the plastic material is in a molten state and the temperature inside the mold is high. At this time, the temperature of the water in the cooling box is low, so that the cooling water introduced into the cooling channel can be low in temperature and have a large flow rate, so as to quickly take away the heat in the mold, and the temperature of the cooling mold can be quickly reduced to accelerate solidification and shorten the cooling time. As solidification proceeds, the temperature inside the molding mold gradually approaches room temperature, the fluidity of the plastic decreases, and the temperature of the water in the cooling box gradually increases. Temperature monitoring is achieved through a temperature sensor, and when the temperature rises, the power of the water pump is controlled to decrease synchronously, thereby reducing the cooling water flow rate to reduce the cooling intensity and avoid excessive cooling that causes stress concentration or surface quality problems inside the product.

[0024] In the present invention, the vertical injection molding machine can realize automatic injection molding, molding and unloading through the injection molding mechanism and the molding mechanism. The cooling intensity can be gradually slowed down according to the progress of the cooling work through the cooling box and the cooling pipe, thereby ensuring the molding speed while avoiding quality problems. The gravity balance of the injection molding raw material and the injection molding mechanism can be achieved through the counterweight mechanism, thereby reducing the energy consumed in controlling the lifting and lowering thereof, thereby achieving an energy-saving effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic diagram of the three-dimensional structure of a vertical injection molding machine proposed by the present invention;

[0026] Figure 2 A schematic cross-sectional view of a vertical injection molding machine proposed by the present invention;

[0027] Figure 3 for Figure 2 A partial enlarged view of part A;

[0028] Figure 4 Schematic three-dimensional structure diagram of the forming mechanism proposed by the present invention;

[0029] Figure 5 Partial three-dimensional structure diagram of the forming mechanism proposed by the present invention;

[0030] Figure 6 Schematic top cross-sectional view of the forming mechanism proposed by the present invention;

[0031] Figure 7 Schematic three-dimensional structure diagram of the injection mold proposed by the present invention;

[0032] Figure 8 Schematic three-dimensional structure diagram of the injection mechanism proposed by the present invention;

[0033] Figure 9 Schematic three-dimensional structure diagram of the counterweight mechanism proposed by the present invention.

[0034] In the figure: 1, base; 2, injection mechanism; 201, injection barrel; 202, drive motor; 203, mounting plate; 204, heat preservation barrel; 205, stabilizing ring; 206, feed hopper; 207, feed pipe; 208, injection screw; 209, heating ring; 210, pressure sensor; 211, second electric push rod; 3, counterweight mechanism; 301, counterweight plate; 302, suspension rod; 303, baffle plate; 304, support; 305, sleeve plate; 306, connecting column; 307, rotating arm; 308, hinge plate; 309, third electric push rod; 310, vertical plate; 311, adjusting plate; 312, touch button; 4, forming mold; 401, cooling channel; 402, forming groove; 5, fixing plate; 501, top plate; 502, first electric push rod; 503, guide post; 6, cooling box; 601, piston plate; 602, connecting rod; 603, inlet pipe; 604, first one-way valve; 605, outlet pipe; 606, second one-way valve; 7, vertical plate; 701, compression spring; 702, push plate; 8, water pump; 801, water inlet pipe; 9, vertical pipe; 901, horizontal pipe; 902, cooling pipe; 10, controller; 11, temperature sensor; 12, water outlet pipe; 13, alarm. Detailed implementation manners

[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0036] Refer to Figures 1-9, A vertical injection molding machine, comprising: a base 1, an injection mechanism 2 and a molding mechanism. The injection mechanism 2 includes: an injection barrel 201 and an injection screw 208. The injection screw 208 is rotatably installed in the injection barrel 201. A heating ring 209 is fixedly sleeved outside the injection barrel 201. Weight balancing mechanisms 3 are arranged on both sides of the injection barrel 201;

[0037] The molding mechanism includes: a molding die 4, a fixing plate 5 and a cooling tank 6. A molding groove 402 is arranged on one side of the molding die 4. The fixing plate 5 is fixedly installed on the top of the base 1. A first electric push rod 502 is fixedly installed on one side of the fixing plate 5. The output end of the first electric push rod 502 is fixedly connected to the other side of the molding die 4. A plurality of cooling channels 401 are opened on the front side of the molding die 4. Vertical pipes 9 are arranged on both the front and rear sides of the molding die 4. A plurality of cooling pipes 902 are communicated on the side of the two vertical pipes 9 close to each other. The other end of the cooling pipe 902 is communicated with the corresponding cooling channel 401. A horizontal pipe 901 is communicated on one side of the vertical pipe 9. Water inlet pipes 801 and outlet pipes 12 are respectively slidably and sealingly sleeved outside the two horizontal pipes 901. A water pump 8 is fixedly installed on the front side of the cooling tank 6. The water outlet of the water pump 8 is communicated with one end of the water inlet pipe 801;

[0038] The molding mechanism is arranged in two groups, and the two molding grooves 402 form an injection mold cavity.

[0039] In this embodiment, a connecting rod 602 is fixedly installed outside the molding die 4. The other end of the connecting rod 602 extends into the cooling tank 6 and is fixedly installed with a piston plate 601. One side of the cooling tank 6 is fixedly connected to the fixing plate 5. The other side of the cooling tank 6 is communicated with an inlet pipe 603 and an outlet pipe 605. A first one-way valve 604 and a second one-way valve 606 are respectively arranged in the inlet pipe 603 and the outlet pipe 605. The other end of the outlet pipe 12 is communicated with the rear side of the cooling tank 6. A water suction pipe is communicated in the water inlet of the water pump 8. The other end of the water suction pipe is communicated with the front side of the cooling tank 6;

[0040] Stabilizing plates are fixedly installed on both the front and rear sides of the molding die 4. The horizontal pipe 901 is fixedly inserted into the corresponding stabilizing plate.

[0041] In this embodiment, a stepped hole is opened on the side wall of the molding groove 402. A push plate 702 is slidably installed in the stepped hole. One end of the push plate 702 extends outside the molding die 4 and is fixedly installed with a vertical plate 7. The vertical plate 7 is slidably sleeved outside the connecting rod 602. A compression spring 701 is fixedly installed between the vertical plate 7 and the molding die 4.

[0042] In this embodiment, a guide post 503 is fixedly installed outside the molding die 4. The guide post 503 is slidably installed in the fixing plate 5. A blanking hole is opened at the bottom of the base 1. And support legs are fixedly installed at the four corners of the bottom of the base 1.

[0043] In this embodiment, a mounting plate 203 is fixedly sleeved outside the injection barrel 201. A top plate 501 is fixedly installed at the top of the fixed plate 5. A second electric push rod 211 is fixedly installed at the top of the top plate 501. A pressure sensor 210 is fixedly installed at the output end of the second electric push rod 211. The pressure sensor 210 is fixedly installed at the bottom of the mounting plate 203. A feed pipe 207 is communicated with the rear side of the injection barrel 201. The top end of the feed pipe 207 is communicated with a feed hopper 206. A drive motor 202 is fixedly installed at the top of the injection barrel 201. The top of the injection screw 208 is fixedly installed on the output shaft of the drive motor 202.

[0044] In this embodiment, the counterweight mechanism 3 includes: a counterweight plate 301, a vertical plate 310 and a rotating arm 307. A suspension rod 302 is fixedly installed at the top of the counterweight plate 301. The top end of the suspension rod 302 is hinged to one end of the rotating arm 307. The other end of the rotating arm 307 is hinged with a hinge plate 308. The hinge plate 308 is fixedly installed at the top of the mounting plate 203. The vertical plate 310 is fixedly installed at the top of the top plate 501. A third electric push rod 309 is fixedly installed on one side of the vertical plate 310. A regulating plate 311 is fixedly installed at the output end of the third electric push rod 309. A bracket 304 is fixedly installed at the top of the regulating plate 311. A sleeve plate 305 is rotatably installed inside the bracket 304. The sleeve plate 305 is slidably sleeved outside the rotating arm 307.

[0045] In this embodiment, a connecting column 306 is fixedly installed on one side of the vertical plate 310. The regulating plate 311 is slidably sleeved outside the connecting column 306. The other end of the connecting column 306 is fixedly installed with a baffle 303. A touch button 312 is fixedly installed on one side of the baffle 303 close to the vertical plate 310.

[0046] In this embodiment, a controller 10 is fixedly installed at the front side of the base 1. An alarm 13 is fixedly installed at the top of the mounting plate 203. The controller 10 is in signal connection with the pressure sensor 210, the touch button 312, the third electric push rod 309 and the alarm 13. When the touch button 312 is pressed, the controller 10 controls the alarm 13 to start. When the pressure value monitored by the pressure sensor 210 increases, the controller 10 controls the output end of the third electric push rod 309 to contract. When the pressure value monitored by the pressure sensor 210 decreases, the controller 10 controls the output end of the third electric push rod 309 to extend.

[0047] In this embodiment, a temperature sensor 11 is fixedly installed on one side of the cooling tank 6. The temperature sensor 11, water pump 8, second electric push rod 211 and first electric push rod 502 are in signal connection with the controller 10. When the temperature sensor 11 monitors that the temperature rises, the controller 10 controls the power of the water pump 8 to decrease. When the temperature sensor 11 monitors that the temperature reaches the preset value, the controller 10 controls the output end of the first electric push rod 502 to contract. A stabilizing ring 205 is fixedly installed at the top of the injection barrel 201, and the feed hopper 206 is fixedly installed within the stabilizing ring 205. A heat preservation barrel 204 is fixedly installed on the outer side of the injection barrel 201, and the heat preservation barrel 204 is fixedly sleeved on the outer side of the heating ring 209.

[0048] In this embodiment, during use, plastic particles are placed into the feed hopper 206, causing the plastic particles to enter the feed pipe 207 and then into the injection barrel 201. By starting the drive motor 202 to drive the injection screw 208 to rotate, the downward conveyance of the plastic particles is achieved, and by starting the heating ring 209, the plastic particles are heated to melt them. Then, the injection screw 208 conveys the melted plastic into the molding cavity. Next, the second electric push rod 211 is started to drive the mounting plate 203 and the injection barrel 201 to move upward, separating the injection barrel 201 from the injection mold. Then, the water pump 8 is started to pump out the water in the cooling tank 6 through the water suction pipe, and it is introduced into the front horizontal pipe 901 and vertical pipe 9 through the water outlet pipe 12, then into the cooling channel 401 through the cooling pipe 902, and then into the water outlet pipe 12 through the rear vertical pipe 9 and horizontal pipe 901, and the water is guided back into the cooling tank 6 through the water outlet pipe 12. When the water flows through the cooling channel 401, it can cool the injection mold, thereby accelerating the solidification of the plastic. As the cooling progresses, the temperature of the water in the cooling tank 6 rises after being circulated and conveyed for cooling, causing the cooling rate of the injection mold to gradually decrease, thus avoiding quality problems caused by stress concentration inside the plastic.

[0049] The temperature inside the water tank is monitored by the temperature sensor 11. When the monitored temperature reaches the preset value, the controller 10 controls the first electric push rod 502 to start. The first electric push rod 502 drives the two injection molds to move away from each other, achieving the separation of the two injection molds. At this time, the formed plastic part will remain in the forming groove 402 of one of the injection molds. When the vertical plate 7 contacts the fixed plate 5, the vertical plate 7 stops moving, and the two injection molds continue to move away from each other, thereby ejecting the formed plastic part through the push plate 702 and dropping it through the blanking hole to achieve automatic discharging. At the same time, the injection mold drives the piston plate 601 to move horizontally in the cooling tank 6 through the connecting rod 602, thereby discharging the heated cooling wastewater from the outlet pipe 605. Then, the first electric push rod 502 is started to drive the two injection molds to move closer to each other to reset, and at the same time, it drives the two piston plates 601 to move closer to each other, introducing new cooling water from the inlet pipe 603 into the cooling tank 6 for the next cooling operation.

[0050] The weight of the injection molding mechanism 2 and the weight of the plastic particles are balanced by the counterweight plate 301, so that the pressure value monitored by the pressure sensor 210 is close to zero. When the plastic particles are added, the pressure value monitored by the pressure sensor 210 increases. The controller 10 controls the output end of the third electric push rod 309 to contract and drive the adjustment plate 311 to move toward the side close to the vertical plate 310. The adjustment plate 311 drives the sleeve plate 305 to move toward the side close to the hinge plate 308 through the bracket 304, so that the distance between the adjustment plate 311 and the counterweight plate 301 increases, thereby increasing the weight of the counterweight plate 301 relative to the bracket 304. The force arm generated thereby re-forms a state of equilibrium. During the injection molding process, as the plastic particles are consumed, the pressure value monitored by the pressure sensor 210 decreases, and the controller 10 controls the output end of the third electric push rod 309 to extend, driving the adjustment plate 311 to move to the right to achieve leveling. Therefore, when the second electric push rod 211 controls the injection molding mechanism 2 and the plastic particles to rise and fall, the work required to overcome gravity is very small, thereby avoiding energy waste, and when the adjustment plate 311 contacts the touch button 312, the controller 10 controls the alarm 13 to start, thereby reminding the staff to add plastic particles in the feed hopper 206.

[0051] At the beginning of injection molding, the plastic material is in a molten state and the temperature inside the mold is relatively high. At this time, the temperature of the water in the cooling box 6 is low, so that the cooling water introduced into the cooling channel 401 can have a low temperature and a large flow rate, so as to quickly take away the heat in the mold, and quickly reduce the temperature of the cooling mold to accelerate solidification and shorten the cooling time. As solidification proceeds, the temperature inside the molding mold 4 gradually approaches room temperature, the fluidity of the plastic decreases, and the temperature of the water in the cooling box 6 gradually increases. Temperature monitoring is achieved through the temperature sensor 11, and the power of the water pump 8 is controlled to decrease synchronously when the temperature rises, thereby reducing the cooling water flow rate to reduce the cooling intensity and avoid excessive cooling that may cause stress concentration or surface quality problems inside the product.

[0052] The vertical injection molding machine provided by the present invention is introduced in detail above. The principle and implementation mode of the present invention are described in detail using specific embodiments herein. The description of the above embodiments is only used to help understand the method and core idea of the present invention. It should be pointed out that for ordinary technicians in this technical field, the present invention can also be improved and modified in a number of ways without departing from the principle of the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A vertical injection molding machine, characterized in that, Including: A base (1), an injection molding mechanism (2) and a molding mechanism. The injection molding mechanism (2) includes an injection barrel (201) and an injection screw (208). The injection screw (208) is rotatably installed in the injection barrel (201). A heating ring (209) is fixedly sleeved on the outer side of the injection barrel (201). Weight balancing mechanisms (3) are arranged on both sides of the injection barrel (201); The molding mechanism includes a molding die (4), a fixing plate (5) and a cooling box (6). A molding groove (402) is arranged on one side of the molding die (4). The fixing plate (5) is fixedly installed on the top of the base (1). A first electric push rod (502) is fixedly installed on one side of the fixing plate (5). The output end of the first electric push rod (502) is fixedly connected to the other side of the molding die (4). A plurality of cooling channels (401) are formed on the front side of the molding die (4). Vertical pipes (9) are arranged on both the front and rear sides of the molding die (4). A plurality of cooling pipes (902) are communicated on one side of the two vertical pipes (9) close to each other. The other end of the cooling pipe (902) is communicated with the corresponding cooling channel (401). A horizontal pipe (901) is communicated on one side of the vertical pipe (9). Water inlet pipes (801) and water outlet pipes (12) are respectively slidably and sealingly sleeved on the outer sides of the two horizontal pipes (901). A water pump (8) is fixedly installed on the front side of the cooling box (6). The water outlet of the water pump (8) is communicated with one end of the water inlet pipe (801); Two sets of the molding mechanisms are provided, and two molding grooves (402) form an injection mold cavity; A connecting rod (602) is fixedly installed on the outer side of the molding die (4). The other end of the connecting rod (602) extends into the cooling box (6) and is fixedly installed with a piston plate (601). One side of the cooling box (6) is fixedly connected to the fixing plate (5). A guiding pipe (603) and a leading-out pipe (605) are communicated on the other side of the cooling box (6). A first one-way valve (604) and a second one-way valve (606) are respectively arranged in the guiding pipe (603) and the leading-out pipe (605). The other end of the water outlet pipe (12) is communicated with the rear side of the cooling box (6). A water suction pipe is communicated in the water inlet of the water pump (8). The other end of the water suction pipe is communicated with the front side of the cooling box (6); Stabilizing plates are fixedly installed on both the front and rear sides of the molding die (4). The horizontal pipe (901) is fixedly inserted into the corresponding stabilizing plate; The counterweight mechanism (3) includes: a counterweight plate (301), a vertical plate (310), and a rotating arm (307). A suspension rod (302) is fixedly installed at the top of the counterweight plate (301). The top end of the suspension rod (302) is hinged to one end of the rotating arm (307). The other end of the rotating arm (307) is hinged with a hinge plate (308), and the hinge plate (308) is fixedly installed at the top of the mounting plate (203). The vertical plate (310) is fixedly installed at the top of the top plate (501). A third electric push rod (309) is fixedly installed on one side of the vertical plate (310). An adjusting plate (311) is fixedly installed at the output end of the third electric push rod (309). A bracket (304) is fixedly installed at the top of the adjusting plate (311). A sleeve plate (305) is rotatably installed inside the bracket (304), and the sleeve plate (305) is slidably sleeved on the outside of the rotating arm (307).

2. The vertical injection molding machine according to claim 1, characterized in that, A stepped hole is provided on the side wall of the forming groove (402). A push plate (702) is slidably installed in the stepped hole. One end of the push plate (702) extends to the outside of the forming die (4) and is fixedly installed with a vertical plate (7). The vertical plate (7) is slidably sleeved on the outside of the connecting rod (602). A compression spring (701) is fixedly installed between the vertical plate (7) and the forming die (4).

3. The vertical injection molding machine according to claim 1, wherein, Guide columns (503) are fixedly installed on the outside of the forming die (4). The guide columns (503) are slidably installed in the fixed plate (5). A blanking hole is provided at the bottom of the base (1), and support legs are fixedly installed at the four corners of the bottom of the base (1).

4. The vertical injection molding machine according to claim 1, characterized in that, The outside of the injection barrel (201) is fixedly sleeved with a mounting plate (203). The top of the fixed plate (5) is fixedly installed with a top plate (501). A second electric push rod (211) is fixedly installed at the top of the top plate (501). A pressure sensor (210) is fixedly installed at the output end of the second electric push rod (211). The pressure sensor (210) is fixedly installed at the bottom of the mounting plate (203). A feed pipe (207) is communicated with the rear side of the injection barrel (201). The top end of the feed pipe (207) is communicated with a feed hopper (206). A drive motor (202) is fixedly installed at the top of the injection barrel (201). The top of the injection screw (208) is fixedly installed on the output shaft of the drive motor (202).

5. The vertical injection molding machine according to claim 1, characterized in that, A connecting column (306) is fixedly installed on one side of the vertical plate (310). The adjusting plate (311) is slidably sleeved on the outside of the connecting column (306). The other end of the connecting column (306) is fixedly installed with a baffle (303). A touch button (312) is fixedly installed on the side of the baffle (303) close to the vertical plate (310).

6. The vertical injection molding machine according to claim 4, wherein, A controller (10) is fixedly installed on the front side of the base (1). An alarm (13) is fixedly installed on the top of the mounting plate (203). The controller (10) is in signal connection with a pressure sensor (210), a touch button (312), a third electric push rod (309) and the alarm (13). When the touch button (312) is pressed, the controller (10) controls the alarm (13) to start. When the pressure value monitored by the pressure sensor (210) increases, the controller (10) controls the output end of the third electric push rod (309) to contract. When the pressure value monitored by the pressure sensor (210) decreases, the controller (10) controls the output end of the third electric push rod (309) to extend.

7. The vertical injection molding machine according to claim 6, wherein, A temperature sensor (11) is fixedly installed on one side of the cooling box (6). The temperature sensor (11), a water pump (8), a second electric push rod (211) and a first electric push rod (502) are in signal connection with the controller (10). When the temperature sensor (11) monitors that the temperature rises, the power of the water pump (8) is controlled to decrease through the controller (10). When the temperature sensor (11) monitors that the temperature reaches a preset value, the output end of the first electric push rod (502) is controlled to contract through the controller (10). A stabilizing ring (205) is fixedly installed on the top of the injection barrel (201). The feed hopper (206) is fixedly installed inside the stabilizing ring (205). A heat preservation barrel (204) is fixedly installed on the outer side of the injection barrel (201). The heat preservation barrel (204) is fixedly sleeved on the outer side of a heating ring (209).

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