Injection molding device and injection molding method thereof

Abstract

The present invention discloses an injection molding device and an injection molding method thereof, belonging to the technical field of injection molding, comprising a base, a side plate, a slidably provided material receiving platform and a fixedly provided material loading mechanism, an injection mechanism is slidably provided between the base and the side plate, a lower mold plate is fixedly provided on the side plate, a lower molding mold is fixedly provided on the lower mold plate, a splicing mold is slidably provided, and an upper mold plate is slidably provided on the side plate. The present invention also provides a rotatable annular part in the injection mechanism, a plurality of stirring rods are slidably provided on the annular part, and the plurality of stirring rods can be synchronously moved toward the center of the annular part, a temperature sensor on the stirring rod can detect the temperature of the fluid in the injection mechanism, and then the annular part and the stirring rod thereon are controlled to rotate synchronously in combination with the result of the temperature detection, so as to realize the stirring of the fluid in the injection mechanism, and at the same time, the stirring length of the stirring rod can also be adjusted, so that the stirring effect is better and the temperature of the fluid in the injection mechanism is more uniform.

Description

Technical Field

[0001] The invention belongs to the technical field of injection molding, and in particular relates to an injection molding device and an injection molding method thereof. Background Art

[0002] Injection molding refers to a plastic processing method in which plastic is plasticized in the heated barrel of an injection molding machine and then injected into the cavity of a closed mold by a plunger or a reciprocating screw to form a product. This method can process products with complex shapes, precise dimensions or inserts, such as plastic shells for Bluetooth speakers, Bluetooth headsets, and wired headsets, and has high production efficiency.

[0003] After plasticizing in the heated barrel, the plastic is in a fluid state with poor fluidity, which makes it prone to uneven heating. This causes uneven molding time after internal fluid injection, further affecting the quality of the injected product. Summary of the invention

[0004] In view of the deficiencies in the prior art, an object of the present invention is to provide an injection molding device and an injection molding method thereof.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] An injection molding device comprises a base, a side plate, a slidably provided material receiving platform and a fixedly provided material loading mechanism, an injection mechanism is slidably provided between the base and the side plate, a lower mold plate is fixedly provided on the side plate, a lower molding mold is fixedly provided on the lower mold plate, a splicing mold is slidably provided on the lower molding mold, and an upper mold plate is slidably provided on the side plate;

[0007] The feeding mechanism includes a third threaded rod rotatably provided and a third limiting rod fixedly provided, the third threaded rod is rotatably provided on the vertical plate, the third threaded rod and the third limiting rod are matched with a U-shaped groove plate, a storage barrel is slidably provided in the U-shaped groove plate, a second rack is fixedly provided at the top of the storage barrel, a trapezoidal block is fixedly provided on the U-shaped groove plate, an electromagnet is provided on the trapezoidal block, a fourth gear is fixedly provided on the third threaded rod, a bottom mounting plate is slidably provided on the vertical plate, a second gear and a third gear are rotatably provided on the bottom mounting plate, and the second gear and the third gear rotate coaxially;

[0008] The injection mechanism comprises an injection barrel, an extrusion head and an annular member, the injection barrel, the extrusion head and the annular member are rotatably connected, the annular member is located between the injection barrel and the extrusion head, a piston plate is slidably arranged in the injection barrel, a plurality of stirring rods are slidably arranged on the annular member, and a temperature sensor is arranged on the plurality of stirring rods;

[0009] The injection mechanism comprises a moving seat, which is threadedly matched with the first threaded rod and slidably matched with the first limiting rod. An injection cylinder is fixedly arranged on the moving seat, a feed port is fixedly arranged on the top of the injection cylinder, a fixing ring is fixedly arranged outside the injection cylinder, a third telescopic cylinder is fixedly arranged on the fixing ring, a sliding member is fixedly arranged on the output end of the third telescopic cylinder, the sliding member is slidably connected with the injection cylinder, a fifth gear is rotatably connected to the sliding member through a connecting shaft, a third motor is fixedly arranged on the sliding member, the third motor is fixedly connected to the connecting shaft, limiting rings are symmetrically arranged on the sliding member, gear plates are slidably arranged on the two limiting rings, an annular groove is arranged on the gear plate, the two limiting rings are both slidably connected with the annular groove, the gear plate is meshed with the fifth gear, and a plurality of waist-shaped grooves are opened on the gear plate;

[0010] The end of the syringe is connected to a connecting pipe, the connecting pipe is connected to an air pump, and the air pump is fixedly connected to the bottom end of the syringe;

[0011] A third pulley is rotatably provided at one end of the extrusion head, a ring is fixedly provided on the third pulley, the ring is rotatably connected to the injection barrel, the extrusion head, the ring and the injection barrel are connected to form a complete extrusion chamber, and the number of the plurality of stirring rods is consistent with the number of the plurality of waist-shaped grooves;

[0012] Two sliding rods are fixed between the base and the side plate, a moving platform is slidably provided on the two sliding rods, a fourth pulley is rotatably provided on the moving platform, the third pulley and the fourth pulley are connected by a third belt, and a fourth motor is fixed on the moving platform.

[0013] A first mounting plate is fixedly provided on the base, a first threaded rod is rotatably provided between the first mounting plate and the side plate, a first limiting rod is fixedly provided between the first mounting plate and the side plate, an injection mechanism is threadedly matched on the first threaded rod, the injection mechanism is slidably connected to the first limiting rod, two first synchronous wheels are rotatably provided on the first mounting plate, the two first synchronous wheels are connected by a first belt, one of the first synchronous wheels is fixedly connected to the first threaded rod, the first synchronous wheel and the first threaded rod rotate coaxially, the other first synchronous wheel is connected to the first motor, and the first motor is fixedly connected to the first mounting plate;

[0014] The lower mold plate is slidably connected to the first threaded rod and the first limit rod respectively, a second telescopic cylinder is fixedly provided on the side plate, an output end of the second telescopic cylinder is fixedly connected to the splicing mold, the lower molding mold and the splicing mold are spliced ​​to form a complete lower mold, a first telescopic cylinder is fixedly provided on the side plate, an output end of the first telescopic cylinder passes through the lower mold plate and is fixedly connected to the upper mold plate, an upper mold is fixedly provided on the upper mold plate, and an injection port is also provided on the upper mold plate;

[0015] A second mounting plate is also provided next to the side plate, on which a second threaded rod is rotatably provided, a second limiting rod is fixedly provided on the second mounting plate, a material receiving platform is threadedly matched on the second threaded rod, the material receiving platform is slidably connected to the second limiting rod, one end of the second threaded rod is fixedly connected to a first gear, the first gear rotates coaxially with the second threaded rod, the upper mold plate is also fixedly connected to a first rack through a connecting rod, the first rack is meshed with the first gear for transmission, the first mounting plate is fixedly connected to the lower mold plate, and a feeding mechanism is provided at the fixed connection.

[0016] The feeding mechanism includes a third mounting plate, the third mounting plate is installed between the first mounting plate and the lower mold plate, and is fixedly connected to the first mounting plate and the lower mold plate at the same time, a third threaded rod is rotatably provided on the third mounting plate, a third limiting rod is fixedly provided on the third mounting plate, vertical plates are also fixedly provided on both sides of the third mounting plate, one of the vertical plates is rotatably connected to the third threaded rod, a fourth gear is fixedly connected to the third threaded rod, the fourth gear is rotatably connected to the vertical plate, the other vertical plate is fixedly connected to the third limiting rod, a U-shaped groove plate is threadedly matched on the third threaded rod, and the U-shaped groove plate is rotatably connected to the third limiting rod The positioning rod is slidably connected, two first telescopic rods are fixedly provided on the U-shaped groove plate, the other end of the first telescopic rod is fixedly connected to a material storage barrel, a rectangular slide is fixedly provided on the material storage barrel, the rectangular slide is slidably connected to the U-shaped groove plate, a second rack is fixedly provided on the top of the material storage barrel, a long moving rod is fixedly provided on the second rack, a long slide groove is provided on the U-shaped groove plate on the same side as the long moving rod, the long moving rod is slidably connected to the long slide groove, an L-shaped mounting rod is fixedly provided on the U-shaped groove plate, a trapezoidal block is fixedly provided on the top of the L-shaped mounting rod, an electromagnet is provided inside the trapezoidal block, magnetism can be generated when energized, and the magnetic pole can be changed.

[0017] A bottom mounting plate is slidably provided on the vertical plate close to one side of the third threaded rod, and a fourth mounting plate is also fixedly connected to the vertical plate, and a plurality of first springs are fixedly provided on the fourth mounting plate, and the other ends of the plurality of first springs are fixedly connected to the bottom mounting plate, and a second spring is fixedly provided on the bottom mounting plate, and a connecting plate is fixedly provided on the top of the second spring, and a second gear is rotatably provided on the connecting plate, and a cylindrical rod is also fixedly provided on the bottom mounting plate, and the cylindrical rod is located in the second spring, and the top of the cylindrical rod is fixedly connected to the connecting plate, and a fifth mounting plate is provided above the second gear, and the fifth mounting plate is rotatably connected to the second gear, and two second synchronous wheels are rotatably provided above the fifth mounting plate, and the two second synchronous wheels are connected by a second belt, and a cylindrical shaft is fixedly provided on one of the second synchronous wheels, and a third gear is fixedly provided on the top of the cylindrical shaft, wherein the cylindrical shaft, one of the second synchronous wheels and the third gear rotate coaxially, and a second motor is also fixedly provided on the fifth mounting plate, and the output end of the second motor is fixedly connected to another second synchronous wheel, and the bottom mounting plate is magnetic and can be attracted or repelled by the electromagnet inside the trapezoidal block.

[0018] An injection molding method of an injection molding device comprises the following steps:

[0019] S1: First, the plastic particles to be processed are added into the storage barrel in the feeding mechanism, and then the second motor is driven to rotate the second gear, and the second gear is meshed with the fourth gear to rotate the third threaded rod, and the third threaded rod drives the storage barrel to move upward. When the trapezoidal block moves to the bottom mounting plate, the electromagnet in the trapezoidal block pushes the bottom mounting plate and the second gear thereon forward to separate the second gear from the fourth gear. At this time, the second motor continues to rotate to rotate the third gear, and the third gear is meshed with the second rack to transmit the storage barrel to slide toward the feed port at the top of the injection mechanism. When it slides to above the feed port, the material is unloaded to add the plastic particles into the injection mechanism;

[0020] S2: After the plastic particles are added into the injection mechanism, the first motor is started to move the injection mechanism forward, and the extruder head on the injection mechanism is inserted into the injection port on the upper mold plate. At this time, the lower molding mold and the upper mold on the upper mold plate are in a locked state. Then, the heating mechanism in the injection mechanism is started to melt the plastic particles, and then the plastic in a fluid state is pushed to the extruder head through the piston plate. Then, the gear plate is pushed to insert the stirring rod on the ring into the waist-shaped groove on the gear plate, and the gear plate is rotated to realize the sliding of the stirring rod, and the temperature of the plastic fluid in the injection mechanism is detected at various locations. When the temperature difference is too large, the gear plate is controlled to retract, and then the fourth motor is started to realize the rotation of the ring, and the stirring rod on the ring stirs the plastic fluid in the injection mechanism;

[0021] S3: Continue to push the piston plate to squeeze the plastic fluid in the injection mechanism into the mold from the injection port. After molding, the upper mold plate and the lower mold plate are separated by the first telescopic cylinder. The molded workpiece is in the lower mold plate. During the movement of the upper mold plate, the first rack will mesh with the first gear to realize the rotation of the second threaded rod. The second threaded rod realizes the movement of the receiving table to between the upper mold plate and the lower mold plate. At this time, the second telescopic cylinder is used to control the movement of the splicing mold to push out the molded workpiece.

[0022] S4: When the next molding is performed, the upper mold plate will be engaged with the lower mold plate again, and the second threaded rod will rotate in the opposite direction, so that the receiving table drives the workpiece on it to return, and then it is collected manually.

[0023] Beneficial effects of the present invention:

[0024] 1. The present invention adds plastic particles into the injection mechanism by providing a feeding mechanism, the feeding mechanism includes a sliding U-shaped groove plate and a storage barrel, and is provided with a second gear and a third gear that rotate coaxially. The U-shaped groove plate is also fixed with an electromagnet, which can push the second gear and the third gear to move horizontally and mesh with the fourth gear and the second rack respectively, thereby realizing the up and down movement of the U-shaped groove plate and the horizontal movement of the storage barrel relative to the U-shaped groove plate.

[0025] 2. The present invention also provides a rotatable annular part in the injection mechanism, on which a plurality of stirring rods are slidably provided, and the plurality of stirring rods can synchronously move toward the center of the annular part. The temperature sensors on the stirring rods can detect the temperature of the fluid in the injection mechanism, and then the annular part and the stirring rods thereon are controlled to rotate synchronously in combination with the result of the temperature detection, so as to realize the stirring of the fluid in the injection mechanism. At the same time, the stirring length of the stirring rods can also be adjusted, so as to achieve a better stirring effect and a more uniform temperature of the fluid in the injection mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 It is a partial structural schematic diagram of the present invention;

[0029] Figure 3 The overall structure of the feeding mechanism of the present invention is shown in FIG. Figure Ⅰ (First person perspective image);

[0030] Figure 4 The overall structure of the feeding mechanism of the present invention is shown in FIG. Figure II (Second perspective image);

[0031] Figure 5 The overall structure of the injection mechanism of the present invention is shown in FIG. Figure Ⅰ (First person perspective image);

[0032] Figure 6 The overall structure of the injection mechanism of the present invention is shown in FIG. Figure II (Second perspective image);

[0033] Figure 7 It is a side view of the overall structure of the present invention;

[0034] Figure 8 It is an internal cross-sectional view of the injection mechanism of the present invention.

[0035] 1. Base; 2. Side plate; 3. First mounting plate; 4. First threaded rod; 5. First stop rod; 6. Injection mechanism; 7. Slide rod; 8. Second mounting plate; 9. Material receiving platform; 10. First telescopic cylinder; 11. Lower mold plate; 12. Lower molding mold; 13. Upper mold plate; 14. Injection port; 15. Splicing mold; 16. Second telescopic cylinder; 17. Second stop rod; 18. Second threaded rod; 19. Connecting rod; 20. First rack; 21. First gear; 22. Loading mechanism; 23, first synchronous wheel; 24, first belt; 25, first motor; 601, injection cylinder; 602, feed port; 603, moving seat; 604, fixed ring; 605, third telescopic cylinder; 606, sliding member; 607, connecting shaft; 608, fifth gear; 609, third motor; 610, limit ring; 611, gear plate; 612, waist-shaped groove; 613, annular groove; 614, moving platform; 615, fourth pulley; 616, fourth motor; 6 17. third belt; 618. third pulley; 619. extruder; 620. ring; 621. stirring rod; 622. piston plate; 623. connecting pipe; 624. air pump; 2201. third mounting plate; 2202. third limit rod; 2203. third threaded rod; 2204. U-shaped groove plate; 2205. storage barrel; 2206. rectangular slide plate; 2207. first telescopic rod; 2208. long slide groove; 2209. long moving rod; 2210. second Rack; 2211, vertical plate; 2212, fourth gear; 2213, L-shaped mounting rod; 2214, trapezoidal block; 2215, bottom mounting plate; 2216, second spring; 2217, cylindrical rod; 2218, second gear; 2219, fifth mounting plate; 2220, cylindrical shaft; 2221, second belt; 2222, third gear; 2223, second synchronous wheel; 2224, second motor; 2225, fourth mounting plate; 2226, first spring. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] like Figure 1As shown, an injection molding device includes a base 1 and a side plate 2, a first mounting plate 3 is fixedly provided on the base 1, a first threaded rod 4 is rotatably provided between the first mounting plate 3 and the side plate 2, a first limiting rod 5 is fixedly provided between the first mounting plate 3 and the side plate 2, an injection mechanism 6 is threadedly fitted on the first threaded rod 4, the injection mechanism 6 is slidably connected to the first limiting rod 5, two first synchronous wheels 23 are rotatably provided on the first mounting plate 3, the two first synchronous wheels 23 are connected by a first belt 24, one of the first synchronous wheels 23 is fixedly connected to the first threaded rod 4, one of the first synchronous wheels 23 rotates coaxially with the first threaded rod 4, the other first synchronous wheel 23 is connected to a first motor 25, and the first motor 25 is fixedly connected to the first mounting plate 3.

[0038] like Figure 1 and Figure 2 As shown, a lower mold plate 11 is also fixedly connected to the side plate 2, and the lower mold plate 11 is slidably connected to the first threaded rod 4 and the first limit rod 5 respectively. A lower molding mold 12 is fixedly provided on the lower mold plate 11, and a splicing mold 15 is slidably provided on the lower molding mold 12. A second telescopic cylinder 16 is fixedly provided on the side plate 2, and an output end of the second telescopic cylinder 16 is fixedly connected to the splicing mold 15. The lower molding mold 12 and the splicing mold 15 are spliced ​​to form a complete lower mold. A first telescopic cylinder 10 is fixedly provided on the side plate 2, and an output end of the first telescopic cylinder 10 is fixedly connected to an upper mold plate 13 through the lower mold plate 11, and an upper mold is fixedly provided on the upper mold plate 13. An injection port 14 is also provided on the upper mold plate 13, and liquid is injected into the mold through the injection port 14 for molding.

[0039] like Figure 1 and Figure 2 As shown, a second mounting plate 8 is also provided next to the side plate 2, on which a second threaded rod 18 is rotatably provided, on which a second limiting rod 17 is fixedly provided, and on which a material receiving platform 9 is threadedly fitted, which is slidably connected to the second limiting rod 17, and a first gear 21 is fixedly connected to one end of the second threaded rod 18, which coaxially rotates with the second threaded rod 18, and a first rack 20 is also fixedly connected to the upper mold plate 13 via a connecting rod 19, and the first rack 20 is meshed with the first gear 21 for transmission.

[0040] Two slide bars 7 are fixedly provided between the base 1 and the side plate 2. The first mounting plate 3 is fixedly connected to the lower mold plate 11, and a feeding mechanism 22 is provided at the fixed connection.

[0041] like Figure 3As shown, the feeding mechanism 22 includes a third mounting plate 2201, which is installed between the first mounting plate 3 and the lower mold plate 11, and is fixedly connected to the first mounting plate 3 and the lower mold plate 11 at the same time. A third threaded rod 2203 is rotatably provided on the third mounting plate 2201, and a third limiting rod 2202 is fixedly provided on the third mounting plate 2201. Vertical plates 2211 are also fixedly provided on both sides of the third mounting plate 2201, one of the vertical plates 2211 is rotatably connected to the third threaded rod 2203, a fourth gear 2212 is fixedly connected to the third threaded rod 2203, and the fourth gear 2212 is rotatably connected to the vertical plate 2211, and the other vertical plate 2211 is fixedly connected to the third limiting rod 2202, and a U-shaped groove plate 2204 is threadedly matched on the third threaded rod 2203, and the U-shaped groove plate 2204 is rotatably connected to the third limiting rod 22 02 sliding connection, two first telescopic rods 2207 are fixedly provided on the U-shaped groove plate 2204, and the other end of the first telescopic rod 2207 is fixedly connected to a storage barrel 2205, and a rectangular slide 2206 is fixedly provided on the storage barrel 2205, and the rectangular slide 2206 is slidably connected to the U-shaped groove plate 2204, and a second rack 2210 is fixedly provided on the top of the storage barrel 2205, and a long moving rod 2209 is fixedly provided on the second rack 2210, and a long slide groove 2208 is provided on the U-shaped groove plate 2204 on the same side as the long moving rod 2209, and the long moving rod 2209 is slidably connected with the long slide groove 2208, and an L-shaped mounting rod 2213 is fixedly provided on the U-shaped groove plate 2204, and a trapezoidal block 2214 is fixedly provided on the top of the L-shaped mounting rod 2213, and an electromagnet is provided inside the trapezoidal block 2214, which can generate magnetism after being energized, and the magnetic pole can be changed.

[0042] like Figure 3-4As shown, a bottom mounting plate 2215 is slidably provided on the vertical plate 2211 close to one side of the third threaded rod 2203, and a fourth mounting plate 2225 is also fixedly connected to the vertical plate 2211, and a plurality of first springs 2226 are fixedly provided on the fourth mounting plate 2225, and the other ends of the plurality of first springs 2226 are fixedly connected to the bottom mounting plate 2215, and a second spring 2216 is fixedly provided on the bottom mounting plate 2215, and a connecting plate is fixedly provided on the top end of the second spring 2216, and a second gear 2218 is rotatably provided on the connecting plate, and a cylindrical rod 2217 is also fixedly provided on the bottom mounting plate 2215, and the cylindrical rod 2217 is located in the second spring 2216, and the top end of the cylindrical rod 2217 is fixedly connected to the connecting plate, and a fifth mounting plate 2225 is provided above the second gear 2218. 219, the fifth mounting plate 2219 is rotatably connected to the second gear 2218, and two second synchronous wheels 2223 are rotatably provided above the fifth mounting plate 2219, and the two second synchronous wheels 2223 are connected by a second belt 2221, and a cylindrical shaft 2220 is fixedly provided on one of the second synchronous wheels 2223, and a third gear 2222 is fixedly provided on the top of the cylindrical shaft 2220, wherein the cylindrical shaft 2220, one of the second synchronous wheels 2223 and the third gear 2222 rotate coaxially, and a second motor 2224 is also fixedly provided on the fifth mounting plate 2219, and an output end of the second motor 2224 is fixedly connected to another second synchronous wheel 2223, and the bottom mounting plate 2215 is magnetic and can be attracted or repelled by the electromagnet inside the trapezoidal block 2214.

[0043] When in use, the U-shaped groove plate 2204 on the feeding mechanism 22 and the storage barrel 2205 thereon are located below the third threaded rod 2203, that is, the fourth gear 2212 is in meshing state with the second gear 2218. At this time, the second motor 2224 is started to drive the second synchronous wheel 2223 to rotate, so that the second gear 2218 can rotate, and the second gear 2218 drives the fourth gear 2212 to rotate, thereby further realizing the rotation of the third threaded rod 2203. When the third threaded rod 2203 rotates, the U-shaped groove plate 2204 and the storage barrel 2205 start to move upward. When the trapezoidal block 2214 gradually rises to be flush with the bottom mounting plate 2215, the electromagnet in the trapezoidal block 2214 is energized to generate magnetism that repels the bottom mounting plate 2215, gradually pushing the bottom mounting plate 2215 to slide inward. During the sliding process, the second gear 2218 will gradually separate from the fourth gear 2212, and the fourth gear 2212 will stop rotating. There is a certain friction resistance at the sliding connection between the bottom mounting plate 2215 and the vertical plate 2211. When the second gear 2218 is separated from the fourth gear 2212, it can be ensured that they remain in a relatively static state. The U-shaped groove plate 2204 and the material storage barrel 2205 thereon remain stationary, and the third gear 2222 after horizontal movement will be engaged with the second rack 2210. The rotation of the third gear 2222 can drive the material storage barrel 2205 to slide on the long slide groove 2208, and move the material storage barrel 2205 to the top of the injection mechanism 6 for unloading. When the magnetic pole of the electromagnet in the trapezoidal block 2214 is changed, the electromagnet will attract the bottom mounting plate 2215, and drive the bottom mounting plate 2215 back to its original position again. At this time, the second gear 2218 can mesh with the fourth gear 2212 again.

[0044] like Figure 5 As shown, the injection mechanism 6 includes a moving seat 603, the moving seat 603 is threadedly matched with the first threaded rod 4 and slidably matched with the first limiting rod 5, an injection cylinder 601 is fixedly arranged on the moving seat 603, a feed port 602 is fixedly arranged on the top of the injection cylinder 601, a fixing ring 604 is fixedly arranged outside the injection cylinder 601, a third telescopic cylinder 605 is fixedly arranged on the fixing ring 604, a sliding member 606 is fixedly arranged at the output end of the third telescopic cylinder 605, the sliding member 606 is slidably connected to the injection cylinder 601, a fifth gear 608 is rotatably connected to the sliding member 606 through a connecting shaft 607, and the sliding member 60 6 is fixedly provided with a third motor 609, and the third motor 609 is fixedly connected to the connecting shaft 607. The rotation of the fifth gear 608 is realized by the third motor 609. The third telescopic cylinder 605 can realize the sliding of the sliding member 606 on the injection cylinder 601. The sliding member 606 is also symmetrically provided with limiting rings 610, and two limiting rings 610 are slidably provided with gear plates 611, and the gear plates 611 are provided with annular grooves 613. The two limiting rings 610 are both slidably connected with the annular grooves 613. The gear plates 611 are also provided with a plurality of waist-shaped grooves 612, and the gear plates 611 are meshed with the fifth gear 608.

[0045] like Figure 7-8 As shown, a piston plate 622 is slidably provided inside the injection mechanism 6, a connecting pipe 623 is connected to the end of the injection cylinder 601, the connecting pipe 623 is connected to the air pump 624, and the air pump 624 is fixedly connected to the outer bottom end of the injection cylinder 601.

[0046] like Figure 6 As shown, the injection mechanism 6 also includes an extrusion head 619, one end of which is rotatably provided with a third pulley 618, on which a ring member 620 is fixedly provided, and the ring member 620 is rotatably connected to the injection barrel 601, and the extrusion head 619, the ring member 620 and the injection barrel 601 are connected to form a complete extrusion chamber (such as Figure 8 As shown), a plurality of stirring rods 621 are slidably provided on the annular member 620, and the number of the plurality of stirring rods 621 is consistent with the number of the plurality of waist-shaped grooves 612, and the plurality of stirring rods 621 are respectively inserted into the plurality of waist-shaped grooves 612. When the gear plate 611 rotates, the waist-shaped grooves 612 will drive the stirring rods 621 to slide on the annular member 620, and the plurality of stirring rods 621 are provided with temperature sensors for temperature detection.

[0047] like Figure 6 As shown, a moving platform 614 is slidably provided on the two sliding rods 7, a fourth pulley 615 is rotatably provided on the moving platform 614, the third pulley 618 and the fourth pulley 615 are connected by a third belt 617, and a fourth motor 616 is also fixedly provided on the moving platform 614, the fourth motor 616 drives the fourth pulley 615 to rotate, thereby further realizing the rotation of the third pulley 618.

[0048] like Figure 5-8As shown, when the storage barrel 2205 on the feeding mechanism 22 moves to above the feed port 602 on the injection mechanism 6, the plastic particles fall to the feed port 602 and enter the injection mechanism 6. A heating device is provided inside the injection mechanism 6 to heat and melt the plastic particles into a fluid state. Then, the air pump 624 can push the piston plate 622 to move along the inner wall of the injection mechanism 6 to push the plastic in a fluid state to the extruder head 619. At this time, the sliding member 606 is pushed forward by the third telescopic cylinder 605, and the meshing gear plate 611 and the fifth gear 608 on the sliding member 606 move forward synchronously until the plurality of stirring rods 621 on the annular member 620 are inserted into the waist-shaped groove 612 on the gear plate 611. At this time, the third motor 609 is driven to realize the rotation of the fifth gear 608. The gear plate 611 is moved to further rotate, and the rotation of the gear plate 611 can drive the stirring rod 621 to move toward the center of the ring 620, so as to detect the temperature of the fluid plastic in the extruder head 619, and detect whether there is too large a temperature difference at different positions. If the temperature difference is too large, the sliding member 606 and the gear plate 611 are retracted, and the fourth motor 616 is started to drive the fourth pulley 615 to rotate, so as to further realize the rotation of the ring 620 (when the ring 620 rotates, the extruder head 619 is inserted into the injection port 14 of the upper mold plate 13, so as to ensure that the extruder head 619 is in a relatively static state relative to the ring 620), and the stirring rod 621 on the ring 620 rotates to stir the fluid plastic in the injection mechanism 6 to ensure that the internal temperature is uniform.

[0049] like Figure 1-8 As shown, an injection molding method of an injection molding device comprises the following steps:

[0050] S1: First, the plastic particles to be processed are added into the storage barrel 2205 in the feeding mechanism 22, and then the second motor 2224 is driven to rotate the second gear 2218, and the second gear 2218 is meshed with the fourth gear 2212 to rotate the third threaded rod 2203, and the third threaded rod 2203 drives the storage barrel 2205 to move upward. When the trapezoidal block 2214 moves to the bottom mounting plate 2215, the electromagnet in the trapezoidal block 2214 pushes the bottom mounting plate 2215 and the second gear 2218 thereon forward to separate the second gear 2218 from the fourth gear 2212. At this time, the second motor 2224 continues to rotate to rotate the third gear 2222, and the third gear 2222 is meshed with the second rack 2210 to transmit the storage barrel 2205 toward the feed port 602 at the top of the injection mechanism 6. When sliding to above the feed port 602, unloading is performed to add the plastic particles into the injection mechanism 6.

[0051] S2: After the plastic particles are added into the injection mechanism 6, the first motor 25 is started to move the injection mechanism 6 forward, and the extruder head 619 on the injection mechanism 6 is inserted into the injection port 14 on the upper mold plate 13. At this time, the lower molding mold 12 and the upper mold on the upper mold plate 13 are in a locked state. Then, the heating mechanism in the injection mechanism 6 is started to melt the plastic particles, and then the plastic in a fluid state is pushed to the extruder head 619 through the piston plate 622. Then, by pushing the gear plate 611, the stirring rod 621 on the ring 620 is inserted into the waist-shaped groove 612 on the gear plate 611, and the gear plate 611 is rotated to achieve the sliding of the stirring rod 621, and the temperature of the plastic fluid in the injection mechanism 6 is detected at various locations. When the temperature difference is too large, the gear plate 611 is controlled to retract, and then the fourth motor 616 is started to achieve the rotation of the ring 620. The stirring rod 621 on the ring 620 stirs the plastic fluid in the injection mechanism 6 to ensure that the temperature of the fluid inside the injection mechanism 6 remains roughly consistent;

[0052] S3: Continue to push the piston plate 622 to squeeze the plastic fluid in the injection mechanism 6 into the mold from the injection port 14. After molding, the upper mold plate 13 is separated from the lower mold plate 11 by the first telescopic cylinder 10. The molded workpiece is in the lower mold plate 11. During the movement of the upper mold plate 13, the first rack 20 will mesh with the first gear 21 to realize the rotation of the second threaded rod 18. The second threaded rod 18 realizes the movement of the receiving table 9 to between the upper mold plate 13 and the lower mold plate 11. At this time, the second telescopic cylinder 16 is used to control the movement of the splicing mold 15 to push out the molded workpiece.

[0053] S4: When the next molding is performed, the upper mold plate 13 will be engaged with the lower mold plate 11 again, and the second threaded rod 18 will rotate in the opposite direction, so that the receiving table 9 drives the workpiece thereon to return, and then it is collected manually.

[0054] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0055] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. An injection molding device, characterized in that: It includes a base, a side plate, a slidable receiving platform and a fixed loading mechanism, an injection mechanism is slidably arranged between the base and the side plate, a lower mold plate is fixedly arranged on the side plate, a lower forming mold is fixedly arranged on the lower mold plate, a splicing mold is slidably arranged on the lower forming mold, and an upper mold plate is slidably arranged on the side plate; The feeding mechanism includes a third threaded rod rotatably provided and a third limiting rod fixedly provided, the third threaded rod is rotatably provided on the vertical plate, the third threaded rod and the third limiting rod are matched with a U-shaped groove plate, a storage barrel is slidably provided in the U-shaped groove plate, a second rack is fixedly provided at the top of the storage barrel, a trapezoidal block is fixedly provided on the U-shaped groove plate, an electromagnet is provided on the trapezoidal block, a fourth gear is fixedly provided on the third threaded rod, a bottom mounting plate is slidably provided on the vertical plate, a second gear and a third gear are rotatably provided on the bottom mounting plate, and the second gear and the third gear rotate coaxially; The injection mechanism comprises an injection barrel, an extrusion head and an annular member, the injection barrel, the extrusion head and the annular member are rotatably connected, the annular member is located between the injection barrel and the extrusion head, a piston plate is slidably arranged in the injection barrel, a plurality of stirring rods are slidably arranged on the annular member, and a temperature sensor is arranged on the plurality of stirring rods; The injection mechanism comprises a moving seat, which is threadedly matched with the first threaded rod and slidably matched with the first limiting rod. An injection cylinder is fixedly arranged on the moving seat, a feed port is fixedly arranged on the top of the injection cylinder, a fixing ring is fixedly arranged outside the injection cylinder, a third telescopic cylinder is fixedly arranged on the fixing ring, a sliding member is fixedly arranged on the output end of the third telescopic cylinder, the sliding member is slidably connected with the injection cylinder, a fifth gear is rotatably connected to the sliding member through a connecting shaft, a third motor is fixedly arranged on the sliding member, the third motor is fixedly connected to the connecting shaft, limiting rings are symmetrically arranged on the sliding member, gear plates are slidably arranged on the two limiting rings, an annular groove is arranged on the gear plate, the two limiting rings are both slidably connected with the annular groove, the gear plate is meshed with the fifth gear, and a plurality of waist-shaped grooves are opened on the gear plate; The end of the syringe is connected to a connecting pipe, the connecting pipe is connected to an air pump, and the air pump is fixedly connected to the bottom end of the syringe; A third pulley is rotatably provided at one end of the extrusion head, a ring is fixedly provided on the third pulley, the ring is rotatably connected to the injection barrel, the extrusion head, the ring and the injection barrel are connected to form a complete extrusion chamber, and the number of the plurality of stirring rods is consistent with the number of the plurality of waist-shaped grooves; Two sliding rods are fixed between the base and the side plate, a moving platform is slidably provided on the two sliding rods, a fourth pulley is rotatably provided on the moving platform, the third pulley and the fourth pulley are connected by a third belt, and a fourth motor is fixed on the moving platform.

2. An injection molding device according to claim 1, characterized in that: A first mounting plate is fixedly provided on the base, a first threaded rod is rotatably provided between the first mounting plate and the side plate, a first limiting rod is fixedly provided between the first mounting plate and the side plate, an injection mechanism is threadedly matched on the first threaded rod, the injection mechanism is slidably connected to the first limiting rod, two first synchronous wheels are rotatably provided on the first mounting plate, the two first synchronous wheels are connected by a first belt, one of the first synchronous wheels is fixedly connected to the first threaded rod, the first synchronous wheel and the first threaded rod rotate coaxially, the other first synchronous wheel is connected to the first motor, and the first motor is fixedly connected to the first mounting plate; The lower mold plate is slidably connected to the first threaded rod and the first limit rod respectively, a second telescopic cylinder is fixedly provided on the side plate, an output end of the second telescopic cylinder is fixedly connected to the splicing mold, the lower molding mold and the splicing mold are spliced ​​together to form a complete lower mold, a first telescopic cylinder is fixedly provided on the side plate, an output end of the first telescopic cylinder passes through the lower mold plate and is fixedly connected to the upper mold plate, an upper mold is fixedly provided on the upper mold plate, and an injection port is also provided on the upper mold plate.

3. An injection molding device according to claim 2, characterized in that: A second mounting plate is also provided next to the side plate, on which a second threaded rod is rotatably provided, a second limiting rod is fixedly provided on the second mounting plate, a material receiving platform is threadedly matched on the second threaded rod, the material receiving platform is slidably connected to the second limiting rod, one end of the second threaded rod is fixedly connected to a first gear, the first gear rotates coaxially with the second threaded rod, the upper mold plate is also fixedly connected to a first rack through a connecting rod, the first rack is meshed with the first gear for transmission, the first mounting plate is fixedly connected to the lower mold plate, and a feeding mechanism is provided at the fixed connection.

4. An injection molding device according to claim 3, characterized in that: The feeding mechanism includes a third mounting plate, the third mounting plate is installed between the first mounting plate and the lower mold plate, and is fixedly connected to the first mounting plate and the lower mold plate at the same time, a third threaded rod is rotatably provided on the third mounting plate, a third limiting rod is fixedly provided on the third mounting plate, vertical plates are also fixedly provided on both sides of the third mounting plate, one of the vertical plates is rotatably connected to the third threaded rod, a fourth gear is fixedly connected to the third threaded rod, the fourth gear is rotatably connected to the vertical plate, the other vertical plate is fixedly connected to the third limiting rod, a U-shaped groove plate is threadedly matched on the third threaded rod, and the U-shaped groove plate is rotatably connected to the third limiting rod The positioning rod is slidably connected, two first telescopic rods are fixedly provided on the U-shaped groove plate, the other end of the first telescopic rod is fixedly connected to a material storage barrel, a rectangular slide is fixedly provided on the material storage barrel, the rectangular slide is slidably connected to the U-shaped groove plate, a second rack is fixedly provided on the top of the material storage barrel, a long moving rod is fixedly provided on the second rack, a long slide groove is provided on the U-shaped groove plate on the same side as the long moving rod, the long moving rod is slidably connected to the long slide groove, an L-shaped mounting rod is fixedly provided on the U-shaped groove plate, a trapezoidal block is fixedly provided on the top of the L-shaped mounting rod, an electromagnet is provided inside the trapezoidal block, magnetism can be generated when energized, and the magnetic pole can be changed.

5. An injection molding device according to claim 4, characterized in that: A bottom mounting plate is slidably provided on the vertical plate close to one side of the third threaded rod, and a fourth mounting plate is also fixedly connected to the vertical plate, and a plurality of first springs are fixedly provided on the fourth mounting plate, and the other ends of the plurality of first springs are fixedly connected to the bottom mounting plate, and a second spring is fixedly provided on the bottom mounting plate, and a connecting plate is fixedly provided on the top of the second spring, and a second gear is rotatably provided on the connecting plate, and a cylindrical rod is also fixedly provided on the bottom mounting plate, and the cylindrical rod is located in the second spring, and the top of the cylindrical rod is fixedly connected to the connecting plate, and a fifth mounting plate is provided above the second gear, and the fifth mounting plate is rotatably connected to the second gear, and two second synchronous wheels are rotatably provided above the fifth mounting plate, and the two second synchronous wheels are connected by a second belt, and a cylindrical shaft is fixedly provided on one of the second synchronous wheels, and a third gear is fixedly provided on the top of the cylindrical shaft, wherein the cylindrical shaft, one of the second synchronous wheels and the third gear rotate coaxially, and a second motor is also fixedly provided on the fifth mounting plate, and the output end of the second motor is fixedly connected to another second synchronous wheel, and the bottom mounting plate is magnetic and can be attracted or repelled by the electromagnet inside the trapezoidal block.

6. An injection molding method according to the injection molding device according to any one of claims 1 to 5, characterized in that: The following steps are included: S1: First, the plastic particles to be processed are added into the storage barrel in the feeding mechanism, and then the second motor is driven to rotate the second gear, and the second gear is meshed with the fourth gear to rotate the third threaded rod, and the third threaded rod drives the storage barrel to move upward. When the trapezoidal block moves to the bottom mounting plate, the electromagnet in the trapezoidal block pushes the bottom mounting plate and the second gear thereon forward to separate the second gear from the fourth gear. At this time, the second motor continues to rotate to rotate the third gear, and the third gear is meshed with the second rack to transmit the storage barrel to slide toward the feed port at the top of the injection mechanism. When it slides to above the feed port, the material is unloaded to add the plastic particles into the injection mechanism; S2: After the plastic particles are added into the injection mechanism, the first motor is started to move the injection mechanism forward, and the extruder head on the injection mechanism is inserted into the injection port on the upper mold plate. At this time, the lower molding mold and the upper mold on the upper mold plate are in a locked state. Then, the heating mechanism in the injection mechanism is started to melt the plastic particles, and then the plastic in a fluid state is pushed to the extruder head through the piston plate. Then, the gear plate is pushed to insert the stirring rod on the ring into the waist-shaped groove on the gear plate, and the gear plate is rotated to realize the sliding of the stirring rod, and the temperature of the plastic fluid in the injection mechanism is detected at various locations. When the temperature difference is too large, the gear plate is controlled to retract, and then the fourth motor is started to realize the rotation of the ring, and the stirring rod on the ring stirs the plastic fluid in the injection mechanism; S3: Continue to push the piston plate to squeeze the plastic fluid in the injection mechanism into the mold from the injection port. After molding, the upper mold plate and the lower mold plate are separated by the first telescopic cylinder. The molded workpiece is in the lower mold plate. During the movement of the upper mold plate, the first rack will mesh with the first gear to realize the rotation of the second threaded rod. The second threaded rod realizes the movement of the receiving table to between the upper mold plate and the lower mold plate. At this time, the second telescopic cylinder is used to control the movement of the splicing mold to push out the molded workpiece. S4: When the next molding is performed, the upper mold plate will be engaged with the lower mold plate again, and the second threaded rod will rotate in the opposite direction, so that the receiving table drives the workpiece on it to return, and then it is collected manually.

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