CN117621356A - Injection molding device for molding precise plastic parts - Google Patents

Abstract

The invention is suitable for the technical field of injection molding equipment, and provides an injection molding device for molding a precise plastic part, which comprises a mounting cabinet, wherein one end of the mounting cabinet is provided with an extrusion motor, the output end of the extrusion motor is in transmission connection with a lead screw, the lead screw is in sliding connection with the mounting cabinet, one end of the lead screw, which is far away from the extrusion motor, is provided with a movable disc, the movable disc is provided with a movable die, the middle part of the movable die is provided with a die cavity, the mounting cabinet is provided with a fixed die matched with the movable die, the other end of the mounting cabinet is provided with a feeding motor, the output end of the feeding motor is in rotary connection with a screw, the outside of the screw is sleeved with a conveying cylinder, the conveying cylinder is arranged in the mounting cabinet, the conveying cylinder is communicated with the fixed die, the top of the conveying cylinder is provided with a feeding cylinder, and the output end of the cylinder is provided with a pushing plate; the air cylinder pushes the plastic part to be separated from the fixed die through the pushing plate, so that the plastic part is convenient to use.

Description

An injection molding device for precision plastic parts molding

Technical field

The invention is applicable to the technical field of injection molding equipment and provides an injection molding device for molding precision plastic parts.

Background technique

Injection molding machines have the ability to mold plastic products with complex shapes, precise dimensions or dense textures with metal inserts in one go. They are widely used in national defense, electromechanical, automobiles, transportation, building materials, packaging, agriculture, culture, education, health and other industries. All areas of people's daily lives. Today, with the rapid development of the plastics industry, injection molding machines occupy an important position in both quantity and variety. Their total production accounts for 20%-30% of the entire plastic molding equipment, making them the fastest growing and largest production volume among plastic machinery. One of the machine models.

The molding process of a general injection molding machine is: first, granular or powdery plastic is added into the barrel, and the plastic is brought into a molten state through the rotation of the screw and the heating of the outer wall of the barrel. Then the machine clamps the mold and moves the injection seat forward to make the nozzle Close to the sprue of the mold, and then pass pressure oil into the injection cylinder to push the screw forward, thereby injecting the molten material into the closed mold with a lower temperature at a high pressure and a fast speed. After a certain period of time and The pressure is maintained (also called pressure holding) and cooled to solidify and form, then the mold can be opened and the product can be taken out. After the movable mold and fixed mold in the injection molding machine are cured and formed, the products need to be taken out.

However, when the traditional injection molding machine takes out the product, the product is easily stuck in the movable mold, making it inconvenient to take out, thus affecting the efficiency of use.

Contents of the invention

In view of the above defects, the purpose of the present invention is to provide an injection molding device for precision plastic parts molding. The purpose is to solve the background problems and includes a mounting cabinet. An extrusion motor is installed at one end of the mounting cabinet. The output end of the motor is connected with a screw, and the screw is slidingly connected to the installation cabinet. An end of the screw away from the extrusion motor is equipped with a movable plate. The movable plate is equipped with a movable mold, and a movable mold is installed in the middle. There is a mold cavity, and a fixed mold matching the movable mold is installed on the installation cabinet. A feeding motor is installed on the other end of the installation cabinet. An auger is rotatably connected to the output end of the feeding motor. The auger is externally covered A conveyor tube is connected, and the conveyor tube is installed in the installation cabinet. The conveyor tube is connected with a fixed mold. A feed hopper is installed on the top of the conveyor tube. A cylinder is installed above the fixed mold. The output end of the cylinder is installed There is a push plate.

Further, the output end of the extrusion motor is fixedly connected to a first pulley, the first pulley is rotationally connected to a second pulley through a belt, the second pulley is rotationally connected to the installation cabinet, and the second pulley is threadedly connected. On the screw.

Further, the output end of the feeding motor is fixedly connected to a third pulley, and the third pulley is rotationally connected to a fourth pulley through a belt. The fourth pulley is rotationally connected to the installation cabinet, and the fourth pulley is fixedly connected. In the dragon.

Further, a cooling fan is installed on one side of the installation cabinet, and the cooling fan matches the fixed mold.

Further, the peripheral wall of the movable plate is provided with a first movable hole, the movable mold is provided with a second movable hole matching the first movable hole, and movable columns are installed in the first movable hole and the second movable hole.

Further, the peripheral wall of the movable plate is provided with a first installation hole, the movable mold is provided with a second installation hole that matches the first installation hole, and a spring column is installed in the first installation hole and the second installation hole. The spring column is coated with a spring.

Further, the peripheral wall of the fixed mold is provided with a third movable hole that matches the second movable hole.

Furthermore, guide posts are fixedly connected to both sides of the pushing plate, and guide plates are slidably connected to the guide posts. The guide plates are installed at one end of the cylinder body of the cylinder.

Further, a hopper is installed below the fixed mold, and a turntable is fixedly connected to the bottom of the hopper. A rotation groove is provided in the middle of the bottom of the turntable. The rotation groove is rotationally connected to a rotation column, and the rotation column is fixedly connected. There is a turntable base, and the turntable base is fixedly connected to the installation cabinet.

Further, a slide rail is provided in the middle of the turntable seat, and a sliding column matching the slide rail is provided at the bottom of the turntable, and the sliding column is slidably connected to the slide rail.

beneficial effects

The invention realizes the extrusion of the fixed mold and the movable mold by driving the screw screw to move by the extrusion motor; the cooperation of the feeding motor and the auger realizes the injection of liquid plastic; the cooperation of the movable plate and the spring facilitates demoulding; when the plastic parts are adhered to the movable When molding, the cylinder pushes the plastic parts away from the fixed mold through the pushing plate, which is convenient for use; the guide column guides the moving process of the pushing plate; the rewinding motor drives the turntable to rotate through the gear and ring gear, and the plastic parts are quickly replaced after the plastic parts are collected in the retracting hopper. The storage hopper is convenient for picking up and placing plastic parts; the cooling fan is convenient for rapid heat dissipation of fixed molds and movable molds; the heat dissipation slot is convenient for rapid heat dissipation of movable plates.

Description of drawings

Figure 1 is an isometric view of the present invention;

Figure 2 is a structural diagram of the present invention;

Figure 3 is a connection diagram of the movable disk of the present invention;

Figure 4 is a cylinder connection diagram of the present invention;

Figure 5 is an isometric view of the turntable seat of the present invention;

Figure 6 is an axonometric view of the turntable of the present invention from a first perspective;

Figure 7 is an axonometric view of the turntable of the present invention from a second perspective;

In the picture: 1-installation cabinet, 2-controller, 3-control cabinet, 4-extrusion motor, 5-first pulley, 6-belt, 7-second pulley, 8-screw, 9-pulley bearing Seat, 10-first fixed plate, 11-first baffle, 12-receiving motor, 13-gear, 14-turntable seat, 141-slide rail, 142-rotating column, 15-turntable, 151-receiving trough , 152-ring gear, 153-rotating groove, 154-sliding column, 16-receiving hopper, 17-second baffle, 18-conveyor tube, 19-second fixed plate, 20-feed hopper, 21-mounting seat , 22-cylinder, 221-guide plate, 222-guide column, 223-pushing plate, 23-fixed mold, 231-introduction hole, 232-third movable hole, 24-movable mold, 241-mold cavity, 242- Second mounting hole, 243-second movable hole, 25-movable plate, 251-heat sink, 252-first mounting hole, 253-first movable hole, 254-movable column, 255-spring column, 256-spring, 26-fixed column, 27-feeding motor, 28-third pulley, 29-fourth pulley, 30-auger, 31-feeding barrel, 32-cooling fan, 33-air blowing nozzle.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present invention and are not intended to limit the present invention.

Referring to the accompanying drawings 1 to 7, the object of the present invention is to provide an injection molding device for precision plastic parts molding, including an installation cabinet 1. One end of the installation cabinet 1 is connected with an extrusion motor 4 through bolts, and the output end key of the extrusion motor 4 is The first pulley 5 is connected to the second pulley 7 through the belt 6. The second pulley 7 is rotatably connected to the pulley bearing seat 9. The pulley bearing seat 9 is connected to the first fixing plate 10 through bolts. The plate 10 is connected to the installation cabinet 1 through bolts; the middle part of the second pulley 7 is threaded with a screw 8, the screw 8 is slidingly connected to the side wall of the installation cabinet 1 and penetrates the first baffle 11, and the bottom of the first baffle 11 is connected through bolts Install cabinet 1.

One end of the screw 8 away from the extrusion motor 4 is connected to the middle part of the movable plate 25 through bolts. The peripheral wall of the movable plate 25 is provided with evenly distributed first mounting holes 252. The first mounting holes 252 are connected with spring columns 255 through bolts. A spring 256 is sleeved on the outside of the column 255, and a movable mold 24 is installed on one end of the spring column 255 away from the movable plate 25. Specifically, the peripheral wall of the movable mold 24 is provided with a second mounting hole 242 that matches the first mounting hole 252. The spring column 255 Sleeved inside the second mounting hole 242; both ends of the spring 256 are respectively in contact with the movable mold 24 and the movable plate 25; the peripheral wall of the movable plate 25 is provided with two oppositely arranged first movable holes 253. The two first movable holes 253 Movable columns 254 are threadedly connected inside; the movable mold 24 is provided with a second movable hole 243 that matches the first movable hole 253; a mold cavity 241 is provided on the side of the movable mold 24 away from the movable plate 25; the installation cabinet 1 is away from the movable mold A fixed mold 23 is installed at one end of 24, and an introduction hole 231 is provided in the middle of the fixed mold 23; the fixed mold 23 is provided with a third movable hole 232 that matches the second movable hole 243; the second movable hole 243 and the third movable hole 232 are Both are slidingly connected with the movable column 254 to realize the position limiting during the extrusion process of the fixed mold 23 and the movable mold 24. The movable plate 25 and the movable mold 24 are squeezed by the horizontal movement of the screw 8. The size of the spring column 255 is consistent with that of the movable mold 24. The thickness matches, and after the extrusion is completed, the screw 8 drives the fixed mold 23 away from the movable mold 24, and the spring 256 uses elastic force to pop up the movable mold 24.

A feeding mechanism is provided at one end of the fixed mold 23 away from the movable mold 24; specifically, the feeding mechanism includes a feeding motor 27, the output end of the feeding motor 27 is key-connected to a third pulley 28, and the third pulley 28 is connected by a belt 6 There is a fourth pulley 29. The fourth pulley 29 is rotatably connected to a pulley bearing seat 9. The pulley bearing seat 9 is connected to a second fixed plate 19 through bolts. The second fixed plate 19 is connected to the installation cabinet 1 through bolts; the middle part of the fourth pulley 29 The key is connected with an auger 30, and a conveyor tube 18 is connected to the outside of the auger 30. One end of the conveyor tube 18 penetrates the second fixed plate 19, and the other end of the conveyor tube 18 is connected with a feeding tube 31. The feeding tube 31 is away from the conveying tube 18. One end is connected to the introduction hole 231 of the fixed mold 23, and the feed barrel 31 is threadedly connected to a second baffle 17. The second baffle 17 is connected to the installation cabinet 1 through bolts; the end of the feed barrel 31 away from the conveyor barrel 18 is welded to the fixed Mold 23; a feed hopper 20 is welded to the top of the conveyor tube 18.

A pusher structure is provided above the fixed mold 23; specifically, the pusher structure includes a mounting base 21, which is welded to the top of the second baffle 17, and the bottom of the mounting base 21 is connected to the cylinder body of the cylinder 22 through bolts. The cylinder body is connected with a guide plate 221 through bolts. Both ends of the guide plate 221 are slidingly connected with guide columns 222. One end of the guide column 222 is connected with a push plate 223 through bolts. The push plate 223 has a rectangular structure and a large area. The end of 223 close to the cylinder 22 is connected to the piston of the cylinder 22 through bolts; when the plastic parts are adhered to the fixed mold 23, the plastic parts are pushed away from the fixed mold 23, which is convenient for use; the pushing plate 223 has a large area and is easy to push. The guide pillar 222 guides the pushing plate 223 during its movement. A blowing nozzle 33 is installed on one side of the mounting base 21. The blowing nozzle 33 matches the position of the fixed mold 23. The blowing nozzle 33 is connected to the external compressed air through a pipe. After the molding is completed, the blowing nozzle 33 uses the compressed air to blow the plastic. parts to reduce the adhesion of the plastic parts in the fixed mold 23; and accelerate the air flow between the fixed mold 23 and the movable mold 24, and accelerate the cooling of the fixed mold 23 and the movable mold 24.

A retrieving mechanism is provided at the bottom of the fixed mold 23; specifically, the retrieving mechanism includes a turntable base 14. The turntable base 14 is a circular structure. The bottom of the turntable base 14 is connected to the bottom of the installation cabinet 1 through bolts and is aligned with the position of the fixed mold 23. match;

The top of the turntable base 14 is provided with an annular slide rail 141, and the center of the turntable base 14 is provided with a rotating column 142. The rotating column 142 is integrally formed with the turntable base 14; the turntable base 14 is rotatably connected to the turntable 15; specifically, the turntable 15 is connected to the bottom of the turntable base 14. A rotating groove 153 is provided in the middle, and the rotating groove 153 matches the rotating column 142. The rotating column 142 is rotationally connected to the rotating groove 153 through a cylindrical roller bearing; four sliding columns 154 are provided at the bottom of the turntable 15, and the sliding columns 154 and the slide rails 141 Matchingly, the sliding column 154 is slidingly connected to the slide rail 141 to realize the rotation of the turntable 15 in the horizontal direction; the peripheral wall of the top of the turntable 15 is provided with a material collection trough 151, and the top of the material collection trough 151 is welded with a hopper 16; the outer wall of the turntable 15 is welded with The ring gear 152 is meshed with a gear 13, and the gear 13 is key-connected to a rewinding motor 12. The rewinding motor 12 is connected to the installation cabinet 1 through bolts; the rewinding motor 12 drives the turntable 15 to rotate through the gear 13 and the ring gear 152. , after collecting the plastic parts in the collecting hopper 16, quickly replace the collecting hopper 16 to facilitate the picking and placing of the plastic parts.

Preferably, one side of the installation cabinet 1 is connected with a cooling fan 32 through bolts. The cooling fan 32 matches the position of the fixed mold 23 to facilitate rapid heat dissipation of the fixed mold 23 and the movable mold 24.

Preferably, the extrusion motor 4, the feeding motor 27, and the receiving motor 12 are all electrically connected to the controller 2. The controller 2 is connected to the control cabinet 3 through bolts, and the control cabinet 3 is connected to the side wall of the installation cabinet 1 through bolts.

Preferably, the diagonal positions of the first fixing plate 10 are respectively connected with fixing posts 26 through bolts. The fixing posts 26 penetrate the first baffle 11 and the second baffle 17 in turn and are connected to the second fixing plate 19 through bolts to strengthen the Structural stability of the first baffle 11 and the second baffle 17 .

Preferably, a heat dissipation slot 251 is provided on the side of the movable plate 25 close to the movable mold 24 to facilitate rapid heat dissipation of the movable plate 25 .

To sum up, in actual use, the liquid plastic is introduced into the feeding hopper 20, the feeding motor 27 is started, the feeding motor 27 drives the third pulley 28 to rotate, and the third pulley 28 drives the fourth pulley 29 to rotate through the belt 6. , the fourth pulley 29 drives the auger 30 to rotate, and the auger 30 squeezes the liquid plastic into the feed barrel 31; at the same time, the extrusion motor 4 is started, and the extrusion motor 4 drives the first pulley 5 to rotate, and the first pulley 5 The belt 6 drives the second pulley 7 to rotate, the second pulley 7 drives the screw 8 to move horizontally, the screw 8 drives the movable plate 25 to squeeze the movable mold 24, the movable mold 24 is in contact with the fixed mold 23; the liquid plastic passes through the introduction hole 231 Entering the mold cavity 241, in the mold cavity 241, the liquid plastic is gradually and evenly coated, melted and adhered to the entire surface of the mold cavity 241, and formed into the same shape as the mold cavity 241; then, the feeding motor 27 stops rotating , after the molding is completed, the extrusion motor 4 reverses, the screw 8 drives the movable plate 25 away from the movable mold 24, and the movable mold 24 is away from the fixed mold 23. The spring 256 drives the movable mold 24 to elastically vibrate through elastic force, and the molded plastic parts fall; At the same time, the telescopic end of the cylinder 22 extends, driving the push plate 223 to move downward, pushing the plastic parts to fall; the rewinding motor 12 is started, and the rewinding motor 12 drives the gear 13 to mesh with the ring gear 152, driving the top of the turntable 15 The collecting hopper 16 reaches the bottom of the mold cavity 241, and the plastic parts fall into the collecting hopper 16; finally, the cooling fan 32 is started to speed up the heat dissipation of the fixed mold 23 and the movable mold 24.

Therefore, the device can drive the screw 8 to move through the extrusion motor 4 to realize the extrusion of the fixed mold 23 and the movable mold 24; the feeding motor 27 and the auger 30 cooperate to realize the injection of liquid plastic; the movable plate 25 and the spring 256 The cooperation facilitates demoulding; when the plastic parts are adhered to the movable mold 24, the cylinder pushes the plastic parts away from the fixed mold 23 through the push plate 223, which is convenient for use; the guide column 222 guides the movement process of the push plate 223; the rewinding motor 12 passes The gear 13 and the ring gear 152 drive the turntable 15 to rotate. After the plastic parts are collected in the collecting hopper 16, the collecting hopper 16 can be quickly replaced to facilitate the picking and placing of the plastic parts; the cooling fan 32 facilitates rapid heat dissipation of the fixed mold 23 and the movable mold 24; the heat dissipation slot 251 Convenient for rapid heat dissipation of the movable plate 25.

Of course, the present invention can also have various other embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and deformations according to the present invention. However, these corresponding Changes and deformations should fall within the protection scope of the appended claims of the present invention.

Claims (10)

1. An injection molding device for precision plastic parts molding, characterized by: including an installation cabinet (1), an extrusion motor (4) is installed at one end of the installation cabinet (1), and the extrusion motor (4) The output end of the screw (8) is connected with a screw (8), and the screw (8) is slidingly connected to the installation cabinet (1). An end of the screw (8) away from the extrusion motor (4) is equipped with a movable disk (25). ), the movable plate (25) is installed with a movable mold (24), a mold cavity (241) is provided in the middle of the movable mold (24), and the installation cabinet (1) is equipped with a mold that matches the movable mold (24). The fixed mold (23), the other end of the installation cabinet (1) is equipped with a feeding motor (27), the output end of the feeding motor (27) is rotatably connected to an auger (30), and the auger (30) 30) There is a conveyor tube (18) connected to the outside. The conveyor tube (18) is installed in the installation cabinet (1). The conveyor tube (18) is connected with a fixed mold (23). The top of the conveyor tube (18) A feed hopper (20) is installed, a cylinder (22) is installed above the fixed mold (23), and a push plate (223) is installed at the output end of the cylinder (22). 2. The injection molding device for precision plastic parts molding according to claim 1, characterized in that a first pulley (5) is fixedly connected to the output end of the extrusion motor (4), and the first pulley (5) ) A second pulley (7) is rotatably connected to the installation cabinet (1) through the belt (6), and the second pulley (7) is threadedly connected to the screw (8). 3. The injection molding device for precision plastic parts molding according to claim 1, characterized in that a third pulley (28) is fixedly connected to the output end of the feeding motor (27), and the third pulley (28) ) A fourth pulley (29) is rotatably connected to the installation cabinet (1) through the belt (6), and the fourth pulley (29) is fixedly connected to the auger (30). 4. The injection molding device for precision plastic parts molding according to claim 1, characterized in that a cooling fan (32) is installed on one side of the installation cabinet (1), and the cooling fan (32) is connected with the fixed mold ( 23) match. 5. The injection molding device for precision plastic parts molding according to claim 1, characterized in that the peripheral wall of the movable plate (25) is provided with a first movable hole (253), and the movable mold (24) is provided with a first movable hole (253). The first movable hole (253) matches the second movable hole (243), and a movable column (254) is installed in the first movable hole (253) and the second movable hole (243). 6. The injection molding device for precision plastic parts molding according to claim 1, characterized in that the peripheral wall of the movable plate (25) is provided with a first mounting hole (252), and the movable mold (24) is provided with a first mounting hole (252). The first mounting hole (252) matches the second mounting hole (242). A spring column (255) is installed in the first mounting hole (252) and the second mounting hole (242). The spring column (255) The jacket is connected with a spring (256). 7. The injection molding device for precision plastic parts molding according to claim 5, characterized in that a third movable hole (232) matching the second movable hole (243) is provided on the peripheral wall of the fixed mold (23). 8. The injection molding device for precision plastic parts molding according to claim 1, characterized in that guide posts (222) are fixedly connected to both sides of the push plate (223), and the guide posts (222) are slidingly connected. There is a guide plate (221), and the guide plate (221) is installed at one end of the cylinder body of the cylinder (22). 9. The injection molding device for precision plastic parts molding according to claim 1, characterized in that a collecting hopper (16) is installed below the fixed mold (23), and a turntable is fixedly connected to the bottom of the collecting hopper (16). (15), a rotation groove (153) is provided in the middle of the bottom of the turntable (15), the rotation groove (153) is rotatably connected to a rotation column (142), and the rotation column (142) is fixedly connected to a turntable seat (153). 14), the turntable base (14) is fixedly connected to the installation cabinet (1). 10. The injection molding device for precision plastic parts molding according to claim 9, characterized in that a slide rail (141) is provided in the middle of the turntable seat (14), and a slide rail is provided at the bottom of the turntable (15). (141) Matching sliding column (154), which is slidingly connected to the slide rail (141).