Vertical injection molding machine

Abstract

The invention discloses a vertical injection molding machine, and belongs to the technical field of injection molding equipment, the vertical injection molding machine comprises a base, an injection molding mechanism and a forming mechanism, the injection molding mechanism comprises an injection molding cylinder and an injection molding screw rod, the injection molding screw rod is rotatably installed in the injection molding cylinder, the outer side of the injection molding cylinder is fixedly sleeved with a heating ring, and the two sides of the injection molding cylinder are both provided with counterweight mechanisms; the forming mechanism comprises a forming mold, a fixing plate and a cooling box, a forming groove is formed in one side of the forming mold, and the fixing plate is fixedly installed on the top of the base. Automatic injection molding, forming and discharging can be achieved through the arranged injection molding mechanism and the arranged forming mechanism, the cooling intensity can be gradually reduced according to cooling work through the arranged cooling box and the arranged cooling pipe, and therefore the quality problem is avoided while the forming speed is guaranteed; and the gravity balance of the injection molding raw materials and the injection molding mechanism can be realized through the arranged counterweight mechanism, so that the energy consumed for controlling the lifting of the injection molding mechanism can be reduced, and the energy-saving effect is achieved.

Description

Technical Field

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

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

[0003] During the injection molding process, cooling not only needs to adapt to the temperature changes of the material inside the mold, but also needs to cooperate with the curing process to avoid deformation, warping or incomplete curing. At present, conventional injection molding machines generally use a constant cooling speed to cool the injection mold. Too fast cooling may cause stress concentration or surface quality problems inside the product, while too slow cooling speed will delay the time required for cooling. In addition, during the injection molding process, the current conventional vertical injection molding machine needs to drive the stamping material and the injection molding mechanism to move up and down. In this process, the above-mentioned structure needs to do work, resulting in energy waste. Therefore, we propose a vertical injection molding machine to solve this problem. Summary of the invention

[0004] The object of the present invention is to provide a vertical injection molding machine to solve the problems raised in the above background technology.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A vertical injection molding machine comprises: a base, an injection molding mechanism and a molding mechanism, wherein the injection molding mechanism comprises: an injection molding barrel and an injection molding screw, wherein the injection molding screw is rotatably mounted in the injection molding barrel, a heating ring is fixedly sleeved on the outer side of the injection molding barrel, and a counterweight mechanism is arranged on both sides of the injection molding barrel; The molding mechanism comprises: 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 mounted on the top of the base, a first electric push rod is fixedly mounted on one side of the fixing plate, an 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 the front and rear sides of the molding die, a plurality of cooling pipes are connected on the sides of the two vertical pipes close to each other, the other end of the cooling pipe is connected to the corresponding cooling channel, a horizontal pipe is connected on one side of the vertical pipe, a water inlet pipe and a water outlet pipe are respectively slidably sealed and sleeved on the outer sides of the two horizontal pipes, a water pump is fixedly mounted on the front side of the cooling box, and a water outlet of the water pump is connected to one end of the water inlet pipe; The molding mechanism is arranged in two groups, and two molding grooves form an injection mold cavity.

[0006] Preferably, a connecting rod is fixedly installed on the outer side of the forming mold, 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 fixed plate, the other side of the cooling box is connected with an inlet pipe and an outlet pipe, the inlet pipe and the outlet pipe are respectively provided with a first one-way valve and a second one-way valve, the other end of the water outlet pipe is connected to the rear side of the cooling box, the water inlet of the water pump is connected with a water pumping pipe, and the other end of the water pumping pipe is connected to the front side of the cooling box; Stabilizing plates are fixedly installed on both the front and rear sides of the forming mold, and the transverse tube is fixedly inserted in the corresponding stabilizing plates.

[0007] Preferably, a stepped hole is provided on the side wall of the forming groove, a push plate is slidably installed in the stepped hole, one end of the push plate extends to the outside of the forming mold and is fixedly installed with a vertical plate, the vertical plate is slidably sleeved on the outside of the connecting rod, and a compression spring is fixedly installed between the vertical plate and the forming mold.

[0008] Preferably, a guide column is fixedly installed on the outer side of the molding die, and the guide column is slidably installed in the fixed plate. A blanking hole is opened at the bottom of the base, and supporting legs are fixedly installed at the four corners of the bottom of the base.

[0009] Preferably, a mounting plate is fixedly sleeved on the outer side of the injection molding cylinder, a top plate is fixedly mounted on the top of the fixed plate, a second electric push rod is fixedly mounted on the top of the top plate, a pressure sensor is fixedly mounted on the output end of the second electric push rod, the pressure sensor is fixedly mounted on the bottom of the mounting plate, the rear side of the injection molding cylinder is connected to a feed pipe, the top of the feed pipe is connected to a feed hopper, a drive motor is fixedly mounted on the top of the injection molding cylinder, and the top of the injection molding screw is fixedly mounted on the output shaft of the drive motor.

[0010] Preferably, the counterweight mechanism includes: a counterweight plate, a vertical plate and a rotating arm, a suspension rod is fixedly installed on the top of the counterweight plate, the top of the suspension rod is hinged to one end of the rotating arm, the other end of the rotating arm is hinged to a hinged plate, the hinged plate is fixedly installed on the top of the mounting plate, the vertical plate is fixedly installed on the top of the top plate, a third electric push rod is fixedly installed on one side of the vertical plate, an adjustment plate is fixedly installed on the output end of the third electric push rod, a bracket is fixedly installed on the top of the adjustment plate, a sleeve plate is rotatably installed in the bracket, and the sleeve plate is slidably sleeved on the outside of the rotating arm.

[0011] Preferably, a connecting column is fixedly installed on one side of the vertical plate, the adjustment plate is slidably sleeved on the outer side of the connecting column, a baffle is fixedly installed on the other end of the connecting column, and a touch button is fixedly installed on the side of the baffle close to the vertical plate.

[0012] Preferably, a controller is fixedly installed on the front side of the base, and an alarm is fixedly installed on the top of the mounting plate. The controller is connected to the pressure sensor, the touch button, the third electric push rod and the alarm signal. After 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.

[0013] Preferably, a temperature sensor is fixedly installed on one side of the cooling box, and the temperature sensor, water pump, second electric push rod and first electric push rod are connected with controller signals. When the temperature sensor detects that the temperature reaches an increased level, the controller controls the water pump to reduce power. When the temperature sensor detects that the temperature reaches a preset value, the controller controls the output end of the first electric push rod to contract. A stabilizing ring is fixedly installed on the top of the injection molding cylinder, and the feed hopper is fixedly installed in the stabilizing ring. An insulation cylinder is fixedly installed on the outside of the injection molding cylinder, and the insulation cylinder is fixedly sleeved on the outside of the heating ring.

[0014] The beneficial effects of the present invention are: In the present invention, a vertical injection molding machine is described, by putting plastic particles into a feed hopper, so that the plastic particles enter the feed pipe and are injected into the molding cylinder, and by starting the drive motor to drive the injection screw to rotate, the plastic particles are transported downward, and the plastic particles are heated by starting the heating ring to melt them, and then the injection screw transports the melted plastic into the molding cavity, and then the second electric push rod is started to drive the mounting plate and the injection cylinder to move upward so that the injection cylinder and the injection mold are separated, and then the water pump is started to pump out the water in the cooling box through the pumping pipe, and introduce it into the horizontal pipe and the vertical pipe on the front side through the outlet pipe, and then introduce it into the cooling channel through the cooling pipe, and then introduce it into the outlet pipe through the vertical pipe and the horizontal pipe on the rear side, and then guide the water back to the cooling box through the outlet pipe. When the water flows through the cooling channel, the injection mold can be cooled, thereby accelerating the solidification of the plastic. As the cooling proceeds, the water in the cooling box is circulated and cooled, and the temperature rises, so that the cooling rate of the injection mold is gradually reduced, thereby avoiding the quality problems caused by stress concentration inside the plastic; In the present invention, a vertical injection molding machine monitors the temperature in the water tank through a temperature sensor. When the temperature reaches a preset value, the controller controls the first electric push rod to start, and the first electric push rod drives the two injection molds to move away from each other to separate 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, so that the molded plastic part is ejected by the push plate and falls through the drop hole to realize automatic discharge. At the same time, the injection mold drives the piston plate to move horizontally in the cooling box through the connecting rod, so that the heated cooling waste water is discharged from the outlet pipe, and then the first electric push rod is started to drive the two injection molds to approach each other to achieve reset, and at the same time drive the two piston plates to approach each other, and introduce new cooling water from the introduction pipe into the cooling box to facilitate the next cooling work; 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. 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. 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

[0015] Figure 1 A schematic diagram of the three-dimensional structure of a vertical injection molding machine proposed by the present invention; Figure 2 A schematic cross-sectional view of a vertical injection molding machine proposed by the present invention; Figure 3 for Figure 2 A partial enlarged view of part A; Figure 4 It is a three-dimensional structural schematic diagram of the forming mechanism proposed by the present invention; Figure 5 It is a schematic diagram of a partial three-dimensional structure of the forming mechanism proposed by the present invention; Figure 6 It is a schematic diagram of a top view and a cross-sectional structure of the forming mechanism proposed by the present invention; Figure 7 This is a schematic diagram of the three-dimensional structure of the injection mold proposed by the present invention; Figure 8 It is a three-dimensional structural schematic diagram of the injection molding mechanism proposed by the present invention; Fig. 9 It is a schematic diagram of the three-dimensional structure of the counterweight mechanism proposed in the present invention.

[0016] In the figure: 1, base; 2, injection molding mechanism; 201, injection molding cylinder; 202, drive motor; 203, mounting plate; 204, insulation cylinder; 205, stabilizing ring; 206, feed hopper; 207, feed pipe; 208, injection molding screw; 209, heating ring; 210, pressure sensor; 211, second electric push rod; 3, counterweight mechanism; 301, counterweight plate; 302, suspension rod; 303, baffle; 304, bracket; 305, sleeve plate; 306, connecting column; 307, rotating arm; 308, hinged plate; 309, third electric push rod; 310, vertical plate; 311, adjustment plate; 3 12. Touch button; 4. Molding mold; 401. Cooling channel; 402. Molding groove; 5. Fixed plate; 501. Top plate; 502. First electric push rod; 503. Guide column; 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 DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0018] Reference Figure 1-Figure 9 A vertical injection molding machine comprises: a base 1, an injection molding mechanism 2 and a molding mechanism, the injection molding mechanism 2 comprises: an injection molding cylinder 201 and an injection molding screw 208, the injection molding screw 208 is rotatably mounted in the injection molding cylinder 201, a heating ring 209 is fixedly sleeved on the outer side of the injection molding cylinder 201, and a counterweight mechanism 3 is arranged on both sides of the injection molding cylinder 201; The molding mechanism includes: a molding mold 4, a fixing plate 5 and a cooling box 6. A molding groove 402 is provided on one side of the molding mold 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 mold 4. A plurality of cooling channels 401 are opened on the front side of the molding mold 4. Vertical pipes 9 are provided on the front and rear sides of the molding mold 4. A plurality of cooling pipes 902 are connected on the sides of the two vertical pipes 9 close to each other. The other end of the cooling pipe 902 is connected to the corresponding cooling channel 401. A horizontal pipe 901 is connected on one side of the vertical pipe 9. The outer sides of the two horizontal pipes 901 are respectively slidably sealed and sleeved with a water inlet pipe 801 and a water outlet pipe 12. 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 connected to one end of the water inlet pipe 801. The molding mechanism is arranged in two groups, and two molding grooves 402 form an injection mold cavity.

[0019] In this embodiment, a connecting rod 602 is fixedly installed on the outer side of the forming mold 4, and 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 fixed plate 5, and the other side of the cooling box 6 is connected with an inlet pipe 603 and an outlet pipe 605, and the inlet pipe 603 and the outlet pipe 605 are respectively provided with a first one-way valve 604 and a second one-way valve 606. The other end of the water outlet pipe 12 is connected to the rear side of the cooling box 6, and the water inlet of the water pump 8 is connected with a water pumping pipe, and the other end of the water pumping pipe is connected to the front side of the cooling box 6; Stabilizing plates are fixedly installed on both the front and rear sides of the forming mold 4, and the transverse tube 901 is fixedly inserted in the corresponding stabilizing plates.

[0020] In this embodiment, a stepped hole is opened on the side wall of the molding groove 402, and a push plate 702 is slidably installed in the stepped hole. One end of the push plate 702 extends to the outside of the molding mold 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, and a compression spring 701 is fixedly installed between the vertical plate 7 and the molding mold 4.

[0021] In this embodiment, a guide column 503 is fixedly installed on the outer side of the forming mold 4, and the guide column 503 is slidably installed in the fixed 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.

[0022] In this embodiment, the outer side of the injection molding cylinder 201 is fixedly sleeved with a mounting plate 203, the top of the fixed plate 5 is fixedly mounted with a top plate 501, the top of the top plate 501 is fixedly mounted with a second electric push rod 211, the output end of the second electric push rod 211 is fixedly mounted with a pressure sensor 210, the pressure sensor 210 is fixedly mounted on the bottom of the mounting plate 203, the rear side of the injection molding cylinder 201 is connected to a feed pipe 207, the top of the feed pipe 207 is connected to a feed hopper 206, the top of the injection molding cylinder 201 is fixedly mounted with a drive motor 202, and the top of the injection molding screw 208 is fixedly mounted on the output shaft of the drive motor 202.

[0023] 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 on the top of the counterweight plate 301. The top 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 to a hinged plate 308. The hinged plate 308 is fixedly installed on the top of the mounting plate 203. The vertical plate 310 is fixedly installed on 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 on the output end of the third electric push rod 309. A bracket 304 is fixedly installed on the top of the adjusting plate 311. A sleeve plate 305 is rotatably installed in the bracket 304. The sleeve plate 305 is slidably sleeved on the outer side of the rotating arm 307.

[0024] In this embodiment, a connecting column 306 is fixedly installed on one side of the vertical plate 310, and the adjustment plate 311 is slidably sleeved on the outer side of the connecting column 306. A baffle 303 is fixedly installed on the other end of the connecting column 306, and a touch button 312 is fixedly installed on the side of the baffle 303 close to the vertical plate 310.

[0025] In this embodiment, a controller 10 is fixedly installed on the front side of the base 1, and an alarm 13 is fixedly installed on the top of the mounting plate 203. The controller 10 is connected to the pressure sensor 210, the touch button 312, the third electric push rod 309 and the alarm 13 signal. After 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.

[0026] In this embodiment, a temperature sensor 11 is fixedly installed on one side of the cooling box 6. The temperature sensor 11, the water pump 8, the second electric push rod 211 and the first electric push rod 502 are connected to the controller 10 by signal. When the temperature sensor 11 detects that the temperature reaches an increased level, the controller 10 controls the power of the water pump 8 to be reduced. When the temperature sensor 11 detects that the temperature reaches a 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 on the top of the injection cylinder 201, and the feed hopper 206 is fixedly installed in the stabilizing ring 205. An insulation cylinder 204 is fixedly installed on the outside of the injection cylinder 201, and the insulation cylinder 204 is fixedly sleeved on the outside of the heating ring 209.

[0027] In this embodiment, when in use, plastic particles are placed in the feed hopper 206, so that the plastic particles enter the feed pipe 207 and enter the injection cylinder 201, and the drive motor 202 is started to drive the injection screw 208 to rotate, so as to realize the downward conveying of the plastic particles, and the heating ring 209 is started to heat the plastic particles to melt them, and then the injection screw 208 conveys the melted plastic to the molding cavity, and then the second electric push rod 211 is started to drive the mounting plate 203 and the injection cylinder 201 to move upward so that the injection cylinder 201 and the injection mold are separated, and then the water pump 8 is started to cool the cooling box 6. The water in the cooling box 6 is pumped out through the water pumping pipe, and introduced into the front transverse pipe 901 and the vertical pipe 9 through the water outlet pipe 12, and then introduced into the cooling channel 401 through the cooling pipe 902, and then introduced into the water outlet pipe 12 through the rear vertical pipe 9 and the transverse pipe 901, and the water is guided back into the cooling box 6 through the water outlet pipe 12. When the water flows through the cooling channel 401, the injection mold can be cooled, thereby accelerating the solidification of the plastic. As the cooling proceeds, the water in the cooling box 6 is circulated and cooled, and the temperature rises, so that the cooling rate of the injection mold is gradually reduced, thereby avoiding the quality problems caused by the stress concentration inside the plastic. The temperature in the water tank is monitored by the temperature sensor 11. When the 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 to separate the two injection molds. At this time, the molded plastic part will remain in the molding 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, so that the molded plastic part is ejected by the push plate 702 and falls through the blanking hole to realize automatic discharge. At the same time, the injection mold drives the piston plate 601 to move horizontally in the cooling box 6 through the connecting rod 602, so that the heated cooling waste water is discharged from the outlet pipe 605, and then the first electric push rod 502 is started to drive the two injection molds to approach each other to achieve reset, and at the same time drive the two piston plates 601 to approach each other, and introduce new cooling water from the inlet pipe 603 into the cooling box 6, so as to facilitate the next cooling work; 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.

[0028] 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.

[0029] 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: include: A base (1), an injection molding mechanism (2) and a molding mechanism, wherein the injection molding mechanism (2) comprises: an injection molding cylinder (201) and an injection molding screw (208), wherein the injection molding screw (208) is rotatably mounted in the injection molding cylinder (201), a heating ring (209) is fixedly sleeved on the outer side of the injection molding cylinder (201), and counterweight mechanisms (3) are arranged on both sides of the injection molding cylinder (201); The molding mechanism comprises: a molding die (4), a fixing plate (5) and a cooling box (6); a molding groove (402) is provided on one side of the molding die (4); the fixing plate (5) is fixedly mounted on the top of the base (1); a first electric push rod (502) is fixedly mounted on one side of the fixing plate (5); an 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 provided on the front side of the molding die (4); Both rear sides are provided with vertical pipes (9), and the sides of the two vertical pipes (9) close to each other are connected to a plurality of cooling pipes (902), and the other ends of the cooling pipes (902) are connected to the corresponding cooling channels (401). One side of the vertical pipes (9) is connected to a horizontal pipe (901), and the outer sides of the two horizontal pipes (901) are respectively connected to a water inlet pipe (801) and a water outlet pipe (12) by sliding sealing sleeves. A water pump (8) is fixedly installed on the front side of the cooling box (6), and the water outlet of the water pump (8) is connected to one end of the water inlet pipe (801); The molding mechanism is arranged in two groups, and the two molding grooves (402) form an injection mold cavity.

2. The vertical injection molding machine according to claim 1, characterized in that: 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 fixed plate (5), the other side of the cooling box (6) is connected to an inlet pipe (603) and an outlet pipe (605), the inlet pipe (603) and the outlet pipe (605) are respectively provided with a first one-way valve (604) and a second one-way valve (606), the other end of the water outlet pipe (12) is connected to the rear side of the cooling box (6), the water inlet of the water pump (8) is connected to a water pumping pipe, the other end of the water pumping pipe is connected to the front side of the cooling box (6); Stabilizing plates are fixedly mounted on both the front and rear sides of the molding die (4), and the transverse tube (901) is fixedly inserted into the corresponding stabilizing plates.

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

4. The vertical injection molding machine according to claim 1, characterized in that: A guide column (503) is fixedly mounted on the outer side of the molding die (4), and the guide column (503) is slidably mounted in the fixed plate (5). A blanking hole is provided at the bottom of the base (1), and support legs are fixedly mounted at the four corners of the bottom of the base (1).

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

6. The vertical injection molding machine according to claim 1, characterized in that: The counterweight mechanism (3) comprises: a counterweight plate (301), a vertical plate (310) and a rotating arm (307); a suspension rod (302) is fixedly mounted on 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 to a hinge plate (308); the hinge plate (308) is fixedly mounted on the top of the mounting plate (203); the vertical plate (310) is fixedly mounted on the top of the top plate (501); a third electric push rod (309) is fixedly mounted on one side of the vertical plate (310); an adjustment plate (311) is fixedly mounted on the output end of the third electric push rod (309); a bracket (304) is fixedly mounted on the top of the adjustment plate (311); a sleeve plate (305) is rotatably mounted in the bracket (304); the sleeve plate (305) is slidably sleeved on the outside of the rotating arm (307).

7. The vertical injection molding machine according to claim 6, characterized in that: A connecting column (306) is fixedly mounted on one side of the vertical plate (310), the adjusting plate (311) is slidably sleeved on the outside of the connecting column (306), a baffle (303) is fixedly mounted on the other end of the connecting column (306), and a touch button (312) is fixedly mounted on a side of the baffle (303) close to the vertical plate (310).

8. The vertical injection molding machine according to claim 5, characterized in that: A controller (10) is fixedly mounted on the front side of the base (1), and an alarm (13) is fixedly mounted on the top of the mounting plate (203). The controller (10) is signal-connected to 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 detected 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 detected by the pressure sensor (210) decreases, the controller (10) controls the output end of the third electric push rod (309) to extend.

9. The vertical injection molding machine according to claim 8, characterized in that: A temperature sensor (11) is fixedly mounted on one side of the cooling box (6); the temperature sensor (11), the water pump (8), the second electric push rod (211) and the first electric push rod (502) are connected to the controller (10) by signal; when the temperature sensor (11) detects that the temperature reaches an increased value, the controller (10) controls the power of the water pump (8) to be reduced; when the temperature sensor (11) detects that the temperature reaches a preset value, the controller (10) controls the output end of the first electric push rod (502) to be contracted; a stabilizing ring (205) is fixedly mounted on the top of the injection molding cylinder (201); the feed hopper (206) is fixedly mounted in the stabilizing ring (205); a heat preservation cylinder (204) is fixedly mounted on the outside of the injection molding cylinder (201); and the heat preservation cylinder (204) is fixedly sleeved on the outside of the heating ring (209).

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