Low-defect-rate intelligent injection molding device for children's toys

Abstract

The utility model discloses an intelligent children's toy injection molding device with low defective rate, which relates to the technical field of injection molding, and comprises a fixed template, an injection molding hole is arranged in the middle of the fixed template, an adjusting structure for adjusting the feeding rate is arranged in the injection molding hole, and a feeding structure is arranged on the outer side of the fixed template; the adjusting structure comprises a feeding ring fixedly connected to one end of the interior of the injection molding hole, and adjusting shafts which are annularly distributed at equal intervals are installed on the side, facing the interior of the injection molding hole, of the feeding ring. According to the low-defect-rate intelligent injection molding device for the children's toys, intelligent adjustment of the sectional area of the flow channel is achieved through the adjusting structure. Compared with a traditional injection molding device with a fixed nozzle, the size of the runner can be flexibly adjusted according to the sizes of different toy parts, the requirements of various products are met, the increase of flow resistance caused by the fixed thin runner is effectively avoided and the injection molding pressure and temperature control difficulty are reduced by enlarging or reducing the cross section of the runner, so that the flowing uniformity of plastic melt is improved, and the production efficiency is improved. And product defects and cold material blockage are prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to injection molding technical field, concretely to a low residual rate intelligent children's toy injection molding device. BACKGROUND

[0002] The children's toy injection molding device is used for injection molding machine for manufacturing children's toys, by heating and melting plastic raw materials, injecting into the mold, cooling forming, producing various plastic toy parts or whole toys.

[0003] A plastic toy injection molding device is disclosed in Chinese patent No. CN222844703U, which includes a base, an injection mold disposed on the base and used for plastic toy forming, the injection mold includes: a mold assembly, including a lower mold fixed on the top of the base, an upper mold installed above the lower mold, a male die pin installed inside the lower end of the lower mold, a female die pin installed inside the upper end of the upper mold, and an exhaust groove opened on one side of the female die pin; an exhaust assembly, including an exhaust channel installed at one end of the female die pin; by rotating the knob to drive the exhaust pipe to move outward, the convex head on the plug head is contracted to the inside of the exhaust channel, so that the gas in the male die pin and the female die pin enters the exhaust channel, and then enters the exhaust hole through the air outlet hole and is discharged outward from the exhaust pipe; thereby avoiding the molten plastic from entering the non-expected gap due to its strong flowability during injection.

[0004] The size of the water gap is usually fixed during the operation of the existing injection molding device. For small parts in toy manufacturing, a smaller mold flow channel is usually designed to achieve injection molding, rather than adjusting the size of the water gap to control the injection effect. The small flow channel increases the plastic flow resistance, making the injection pressure and temperature control more complex, and easily causing uneven flow, cold material blockage and other problems, affecting product quality. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a low residual rate intelligent children's toy injection molding device to solve the problem of small flow channel increasing plastic flow resistance, leading to more complex injection pressure and temperature control, easily causing uneven flow, cold material blockage and other problems, and affecting product quality.

[0006] In order to achieve the above object, the utility model provides the following technical scheme: A low residual rate intelligent children's toy injection molding device, including fixed template, the middle of fixed template is equipped with injection molding hole, the inside installation of injection molding hole has the adjusting structure of adjusting feed rate, the outside of fixed template is equipped with feed structure, the adjusting structure includes the feed ring of fixed connection in the inside one end of injection molding hole, the side of feed ring is equipped with the adjusting shaft of annular equidistance distribution to the inside one side of injection molding hole, the outside of every adjusting shaft is fixedly connected with adjusting strip, the side of feed ring close to adjusting strip is equipped with the guide groove of annular equidistance distribution, and the end of adjusting strip is equipped with the protruding piece matched with guide groove, the end of injection molding hole away from feed ring is rotatably connected with rotating ring, the inside of rotating ring is equipped with the drive groove of annular equidistance distribution, and adjusting shaft is slidably connected in the inside drive groove, and the whole formed by adjusting shaft and adjusting strip is installed between feed ring and rotating ring, and the inside of annular distribution adjusting strip forms flow channel, and flow channel both ends are through rotating ring and feed ring middle.

[0007] Preferably, the outside of the rotating ring is provided with a worm structure, the outside of the fixed template is rotatably connected with a worm, and the outside of the worm is engaged with the outside of the rotating ring to form a worm and gear transmission structure.

[0008] Preferably, the inside of the fixed template is fixedly connected with a positioning rod at four corners, and the end of the four positioning rods away from the fixed template is fixedly connected with a fixed plate.

[0009] Preferably, the outside of the fixed plate is fixedly connected with an oil cylinder in the middle, the telescopic end of the oil cylinder extends between the fixed template and the fixed plate, the inside of the four positioning rods is slidably connected with a movable template between the fixed template and the fixed plate, and the telescopic end of the oil cylinder is fixedly connected with the movable template.

[0010] Preferably, the feed structure includes a heat preservation sleeve connected with the outside of the fixed template through a flange, the inside of the heat preservation sleeve is provided with an injection pipe, the outside of the injection pipe is fixedly connected with a support strip spirally distributed, and the support strip is fixedly connected between the inside of the heat preservation sleeve and the outside of the injection pipe.

[0011] Preferably, the outside of the heat preservation sleeve is wound with an electric heating wire spirally distributed, the electric heating wire is located in a spiral channel formed between the heat preservation sleeve and the injection pipe by the support strip, and the top of the end of the injection pipe away from the fixed template is provided with a charging port.

[0012] Preferably, the end of the heat preservation sleeve and the injection pipe is fixedly connected with a motor, the output end of the motor extends to the inside of the injection pipe, the inside of the injection pipe is rotatably connected with a conveying screw fixedly connected with the output end of the motor, and the end of the injection pipe away from the motor is provided with a docking port rotatably connected in the inside of the rotating ring.

[0013] Compared with the prior art, the low-residual intelligent children's toy injection molding device has the advantages that the flow passage sectional area can be intelligently adjusted through the adjusting structure, compared with the traditional fixed water gap injection molding device, the size of the flow passage can be flexibly adjusted according to different toy part sizes, various product requirements can be met, the flow resistance increase caused by the fixed fine flow passage can be effectively avoided, the injection pressure and temperature control difficulty can be reduced, the uniformity of the plastic melt flow is improved, and product defects and cold material blockage are prevented.

[0014] The heat preservation sleeve, the heating wire and the supporting strip in the feeding structure are combined to form a uniform heating heat preservation environment, local cold spots and temperature gradients are avoided, plastic particles are uniformly melted, cold material blockage is prevented, the power of the heating wire is automatically adjusted according to the change of the flow passage sectional area, different injection molding conditions are adapted, and process instability caused by improper temperature control is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a three-dimensional structure schematic diagram of the utility model;

[0016] Figure 2 It is a fixed template cross section structure schematic diagram of the utility model;

[0017] Figure 3 It is a fixed template cross section structure schematic diagram of the utility model; Figure 2 It is a fixed template cross section structure schematic diagram of the utility model;

[0018] Figure 4 It is an adjusting strip structure schematic diagram of the utility model;

[0019] Figure 5 It is a heat preservation sleeve cross section structure schematic diagram of the utility model;

[0020] Figure 6 It is a transportation screw structure schematic diagram of the utility model.

[0021] In the figure: 1, fixed template; 2, injection hole; 3, feeding ring; 4, adjusting shaft; 5, adjusting strip; 6, guide groove; 7, rotating ring; 8, driving groove; 9, flow passage; 10, positioning rod; 11, fixed plate; 12, movable template; 13, oil cylinder; 14, heat preservation sleeve; 15, injection pipe; 16, supporting strip; 17, heating wire; 18, feeding port; 19, motor; 20, butt joint; 21, transportation screw. DETAILED DESCRIPTION

[0022] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of the present application.

[0023] Embodiment one: please refer to Figure 1 Figure 4 The utility model provides the following technical scheme: a kind of low residual rate intelligent children's toy injection molding device, fixed template 1 is equipped with injection molding hole 2 in middle, adjusting structure is installed in injection molding hole 2 inside to adjust feed rate, feed structure is installed on the outside of fixed template 1;Adjusting structure includes the feed ring 3 of fixed connection in the inside one end of injection molding hole 2, feed ring 3 is equipped with the adjusting shaft 4 of annular equidistance distribution towards injection molding hole 2 inside one side, adjusting strip 5 is fixedly connected on the outside of each adjusting shaft 4, the side of feed ring 3 close to adjusting strip 5 is equipped with the guide groove 6 of annular equidistance distribution, the end of adjusting strip 5 is equipped with the protruding block matched with guide groove 6, rotating ring 7 is rotatably connected to the end of injection molding hole 2 away from feed ring 3, rotating ring 7 is equipped with the drive groove 8 of annular equidistance distribution inside, adjusting shaft 4 is slidably connected in drive groove 8 inside, the whole formed by adjusting shaft 4 and adjusting strip 5 is installed between feed ring 3 and rotating ring 7, and the inside of annular distribution adjusting strip 5 forms flow channel 9, and flow channel 9 both ends penetrate rotating ring 7 and feed ring 3 middle;As shown in Figure 3 and Figure 4 As shown in, rotating ring 7 outside is equipped with worm structure, fixed template 1 outside is rotatably connected with worm, and worm outside is engaged with rotating ring 7 outside, forming worm and worm gear transmission structure;As shown in Figure 1 As shown in, fixed template 1 inside four corners are fixedly connected with positioning rod 10, and the end of four positioning rods 10 away from fixed template 1 is fixedly connected with fixed plate 11;As shown in Figure 2 As shown in, fixed plate 11 outside middle is fixedly connected with oil cylinder 13, and the telescopic end of oil cylinder 13 extends between fixed template 1 and fixed plate 11, and the inside of four positioning rods 10 is slidably connected with movable template 12 between fixed template 1 and fixed plate 11, and the telescopic end of oil cylinder 13 is fixedly connected with movable template 12.

[0024] When starting injection molding process, the operator installs the mold between fixed template 1 and movable template 12. The telescopic end of oil cylinder 13 pushes movable template 12 to slide along positioning rod 10, so that the mold is tightly closed, and the four-corner layout of positioning rod 10 ensures the accurate movement track of movable template 12, avoids mold deviation, and forms a sealed cavity after the mold is closed, to prepare for subsequent injection molding.

[0025] ​The adjusting structure can intelligently adjust the cross-sectional area of the flow channel 9 according to the size of the toy parts. When small toy parts are injection molded, the worm drive rotates the worm gear structure outside the rotating ring 7. When the rotating ring 7 rotates, the drive groove 8 inside the rotating ring 7 forces the adjusting shaft 4 to slide inside it, and the protrusions at the ends of the adjusting bars 5 slide inside the guide grooves 6. Since the adjusting shaft 4 is fixedly connected to the adjusting bars 5, the adjusting shaft 4 rotates while sliding inside the drive groove 8. The synchronous rotation of the multiple adjusting bars 5 reduces the cross-sectional area of the flow channel 9. The self-locking characteristic of the worm gear ensures that the rotating ring 7 is stably positioned and avoids vibration and deviation during high-pressure injection molding. For large parts, the reverse rotation of the worm can expand the cross-sectional area of the flow channel 9, reduce the flow rate, and directly adjust the size of the nozzle inside the injection hole 2, avoiding the problem of increased flow resistance caused by a fixed flow channel that is too thin. The multiple adjusting bars 5 form a sealed structure by contacting each other, and the fluid exerts outward pressure on the multiple adjusting bars 5 when flowing inside the flow channel 9, making the multiple adjusting bars 5 fit more tightly.

[0026] Example Two: Based on Example One, please refer to Figure 5 and Figure 6 The following structure is also disclosed: the feeding structure includes a heat preservation sleeve 14 connected to the outside of the fixed mold plate 1 through a flange, an injection pipe 15 is installed inside the heat preservation sleeve 14, a plurality of support bars 16 are fixedly connected to the outside of the injection pipe 15 in a spiral manner, and the support bars 16 are fixedly connected between the inside of the heat preservation sleeve 14 and the outside of the injection pipe 15. Figure 5 As shown in the figure, a plurality of electric heating wires 17 are wound outside the heat preservation sleeve 14 in a spiral manner, the electric heating wires 17 are located in the spiral channel formed between the heat preservation sleeve 14 and the injection pipe 15 by the support bars 16, and a feeding port 18 is provided at the top of the end of the injection pipe 15 away from the fixed mold plate 1. Figure 6 As shown in the figure, a motor 19 is fixedly connected to the end of the heat preservation sleeve 14 and the injection pipe 15, the output end of the motor 19 extends into the inside of the injection pipe 15, a conveying screw 21 is rotatably connected to the inside of the injection pipe 15 and is fixedly connected to the output end of the motor 19, and a docking port 20 is provided at the end of the injection pipe 15 away from the motor 19.

[0027] The plastic particles are first added into the system through the feeding port 18 provided at the top of the injection pipe 15. Under the drive of the motor 19, the conveying screw 21 rotates inside the injection pipe 15. This rotating action pushes the plastic particles to move along the axial direction of the injection pipe 15 towards the fixed mold plate 1. At the same time, the electric heating wires 17 are wound outside the heat preservation sleeve 14, and the electric heating wires 17 are precisely embedded in the spiral channel separated by the spiral support bars 16. When the electric heating wires 17 are powered on, the heat generated by the electric heating wires 17 is transferred to the inner wall of the injection pipe 15, ensuring uniform heat distribution without local hot spots or cold areas. The docking port 20 and the rotating ring 7 form a sealed structure, and the outside of the docking port 20 and the rotating ring 7 is limited by the inside of the injection hole 2 to form a sealed structure.

[0028] The continuous rotation of the transport screw 21 not only forces the plastic to advance, but also applies strong shearing stirring force to break up unmelted particles or temperature stratification; the plastic melt is finally completely homogenized at the docking interface 20, which is internally connected to the rotating ring 7 of the adjusting structure by a rotating connection, ensuring smooth transition of the melt from the feeding structure to the runner 9 without material stagnation or carbonization. When the cross-sectional area of the runner 9 is dynamically reduced or enlarged according to the size of the toy parts to adjust the flow rate, the power of the heating wire 17 of the feeding structure is adjusted in real time by the closed-loop temperature control system; the heat preservation sleeve 14 and the cavity formed by the support strip 16 have excellent heat insulation properties, which completely isolate external environmental interference and ensure the stability of injection molding under seasonal changes or workshop temperature fluctuations.

[0029] In the description of the present application, it should be pointed out that, unless otherwise explicitly specified and limited, the terms "connected" and "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0030] Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A low-defective-rate intelligent children's toy injection molding device, comprising a fixed template (1), an injection hole (2) provided in the middle of the fixed template (1), an adjusting structure for adjusting the feed rate installed inside the injection hole (2), and a feeding structure installed outside the fixed template (1); characterized in that: The adjusting structure includes a feeding ring (3) fixedly connected to one end inside the injection hole (2), the feeding ring (3) is provided with adjusting shafts (4) distributed at equal intervals in a ring shape on one side of the feeding ring (3) towards the inside of the injection hole (2), each adjusting shaft (4) is fixedly connected with an adjusting strip (5) on the outside thereof, the feeding ring (3) is provided with guide grooves (6) distributed at equal intervals in a ring shape on the side close to the adjusting strip (5), the end of the adjusting strip (5) is provided with a protrusion matched with the guide groove (6), one end of the injection hole (2) away from the feeding ring (3) is rotatably connected with a rotating ring (7), the rotating ring (7) is provided with drive grooves (8) distributed at equal intervals in a ring shape inside the rotating ring (7), the adjusting shaft (4) is slidably connected inside the drive groove (8), the adjusting shaft (4) and the adjusting strip (5) form an integral whole installed between the feeding ring (3) and the rotating ring (7), the adjusting strips (5) distributed in a ring shape form flow channels (9) on the inside thereof, and the flow channels (9) pass through the middle of the rotating ring (7) and the feeding ring (3) at both ends.

2. The low-rejection-rate intelligent child toy injection molding device according to claim 1, characterized in that: The rotating ring (7) is provided with a worm structure on the outside thereof, the fixed template (1) is rotatably connected with a worm shaft on the outside thereof, the worm shaft is engaged with the outside of the rotating ring (7) to form a worm and gear transmission structure.

3. The low-rejection-rate intelligent child toy injection molding device according to claim 1, characterized in that: The fixed template (1) is fixedly connected with positioning rods (10) at four corners on the inside thereof, one end of the four positioning rods (10) away from the fixed template (1) is fixedly connected with a fixed plate (11).

4. The low-rejection-rate intelligent child toy injection molding device according to claim 3, characterized in that: The fixed plate (11) is fixedly connected with an oil cylinder (13) in the middle on the outside thereof, the telescopic end of the oil cylinder (13) extends between the fixed template (1) and the fixed plate (11), the inside of the four positioning rods (10) is slidably connected with a movable template (12) between the fixed template (1) and the fixed plate (11), and the telescopic end of the oil cylinder (13) is fixedly connected with the movable template (12).

5. The low-rejection-rate intelligent child toy injection molding device according to claim 1, characterized in that: The feeding structure includes a heat preservation sleeve (14) connected with the outside of the fixed template (1) through a flange, the inside of the heat preservation sleeve (14) is provided with an injection pipe (15), the outside of the injection pipe (15) is fixedly connected with support strips (16) distributed in a spiral shape, and the support strips (16) are fixedly connected between the inside of the heat preservation sleeve (14) and the outside of the injection pipe (15).

6. The low-rejection-rate intelligent child toy injection molding device according to claim 5, characterized in that: The outside of the heat preservation sleeve (14) is wound with electric heating wires (17) distributed in a spiral shape, the electric heating wires (17) are located in a spiral channel formed by the support strips (16) between the heat preservation sleeve (14) and the injection pipe (15), and the top of one end of the injection pipe (15) away from the fixed template (1) is provided with a feeding opening (18).

7. The low-rejection-rate intelligent child toy injection molding device according to claim 6, characterized in that: The end of the heat preservation sleeve (14) and the injection pipe (15) is fixedly connected with a motor (19), the output end of the motor (19) extends into the inside of the injection pipe (15), the inside of the injection pipe (15) is rotatably connected with a conveying screw (21) fixedly connected with the output end of the motor (19), and one end of the injection pipe (15) away from the motor (19) is provided with a butt joint (20) rotatably connected inside the rotating ring (7).

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