Injection device for injection molding machine

Abstract

The invention relates to the technical field of injection molding machines, and provides an injection device for an injection molding machine. A charging barrel is fixedly installed at the top end of a base, a heater is installed on the outer side of the charging barrel, a screw is arranged in the charging barrel, a supporting frame is fixed to one side of the top end of the charging barrel, a material box is fixed to the top end of the supporting frame, and an anti-bubble assembly is arranged in the material box. The anti-bubble assembly comprises a motor, a mounting frame, a heating assembly, a heat recovery structure, a filter box, a filter structure, a stirring structure and a filter screen, the heating assembly is mounted on the outer side of the material box, and the stirring structure is arranged in the material box. According to the plastic drying device, damp plastic in the material box can be heated and dried by using a heating assembly, and in the drying process, a motor drives a stirring rod to rotate through a connecting shaft to stir the plastic, so that the drying effect is better, and the situation that the plastic is too wet due to too much water in the plastic is prevented; and bubbles are generated in the melting process.

Description

Technical Field

[0001] The invention relates to the technical field of injection molding machines, and in particular to an injection device for an injection molding machine. Background Art

[0002] An injection molding machine is an industrial equipment used for plastic molding. Its working principle is similar to that of a syringe used for injections. Through the thrust of the screw (or plunger), the plasticized molten plastic is injected into a closed mold cavity, and the product is obtained after solidification and shaping. The injection device of the injection molding machine is a key component of the injection molding machine, which is responsible for injecting the molten plastic into the mold to form the desired plastic product.

[0003] However, there are still some problems with the injection device of the traditional injection molding machine during use. The raw materials for traditional injection molding are generally plastics. After drying, the plastics are transported to the injection molding factory for processing. Plastics such as nylon and polyester (PET) have strong hygroscopicity. It is easy for the plastics to become damp due to the humidity in the air during transportation, which causes bubbles to appear in the injection device of the traditional injection molding machine during the melting process of the plastic, affecting the quality of the injection molding. Therefore, an injection device for an injection molding machine is needed to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide an injection device for an injection molding machine, so as to solve the defect that the injection device of the existing injection molding machine is inconvenient to dry the plastic before melting the plastic, resulting in bubbles during melting.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: an injection device for an injection molding machine, comprising a base and a barrel; a barrel is fixedly mounted on the top of the base, a heater is mounted on the outside of the barrel, a screw is arranged inside the barrel, a support frame is fixed on one side of the top of the barrel, a material box is fixed on the top of the support frame, and an anti-bubble component is arranged inside the material box;

[0006] The anti-bubble assembly includes a motor, a mounting frame, a heating assembly, a heat recovery structure, a filter box, a filter structure, a stirring structure and a filter screen. The heating assembly is installed on the outside of the material box, and the stirring structure is provided inside the material box.

[0007] A mounting frame is fixed to the top of the material box, a motor is installed on the top of the mounting frame, a heat recovery structure is arranged on one side of the top of the material box, a filter box is arranged at the bottom of the material box, a filter screen is installed on the top of the filter box, a filter structure is arranged on one side of the filter box, guide chute is opened inside at both ends of the filter box, and a collection box is fixed on the other side of the filter box.

[0008] Preferably, the stirring structure includes a rotating disk, a belt, a transmission disk, a bevel gear set, a connecting shaft, a stirring rod and a fixed disk. The connecting shaft is installed inside the material box, a stirring rod is welded to the outside of the connecting shaft, a bevel gear set is installed on the outside of the top end of the connecting shaft, a rotating disk is installed at one end of the bevel gear set, the transmission disk is movably installed at the rear end of the filter box, the rotating disk is connected to the transmission disk by a belt, and a fixed disk is installed on the outside of one end of the transmission disk.

[0009] Preferably, the top end of the connecting shaft passes through the top end of the material box and extends to the inside of the mounting frame, and the output end of the motor is connected to the top end of the connecting shaft.

[0010] Preferably, a plurality of stirring rods are provided, and the plurality of stirring rods are welded integrally with the connecting shaft.

[0011] Preferably, the heat recovery structure includes an exhaust pipe, an air duct and an exhaust port, the exhaust pipe is arranged at the top of the material box, the air duct is opened inside the inner wall of the barrel, one end of the air duct is provided with an exhaust port, and one end of the exhaust pipe is connected to the other end of the air duct.

[0012] Preferably, the filtering structure includes an installation box, a reciprocating screw, a connecting plate, a cleaning rack, a cleaning rack and a thread sleeve. The installation box is installed on one side of the filter box, a reciprocating screw is installed inside the installation box, a thread sleeve is provided on the outer side of the reciprocating screw, a cleaning rack is fixed to the top of the thread sleeve, and a connecting plate is provided on one side of the installation box.

[0013] Preferably, one end of the connecting disk extends to the interior of the motor, one end of the connecting disk is connected to one end of the reciprocating screw rod, and the connecting disk is connected to the fixed disk through a connecting belt.

[0014] Preferably, an outer side of the reciprocating screw rod is provided with an external thread, an inner side of the thread sleeve is provided with an internal thread, and a threaded connection is formed between the reciprocating screw rod and the thread sleeve.

[0015] Preferably, a plurality of bristles are disposed at the bottom end of the cleaning frame, and the plurality of bristles are arranged at equal intervals at the bottom end of the cleaning frame.

[0016] Preferably, two groups of guide chute grooves are provided, and the two groups of guide chute grooves are symmetrically distributed inside the two ends of the filter box, and the guide chute grooves are sloped inside the two ends of the filter box.

[0017] The injection device for an injection molding machine provided by the present invention has the following advantages:

[0018] By using the heating component, the damp plastic inside the material box can be heated and dried, and during the drying process, the motor drives the stirring rod to rotate through the use of the connecting shaft to stir the plastic, so that the drying effect is better and bubbles are prevented from appearing during the melting process due to excessive moisture inside the plastic.

[0019] By using the exhaust pipe and the air passage in combination, the high-temperature gas generated during the drying of the plastic can flow through the air passage, thereby preheating the barrel, making the barrel temperature rise faster during subsequent heating, and also saving electricity consumption during barrel heating;

[0020] By using the reciprocating screw rod and the wire sleeve in coordination, the cleaning frame can be driven to move back and forth when the plastic is dried and unloaded, thereby sweeping the impurities filtered by the filter screen into the inside of the guide chute to prevent the filter screen from affecting the filtering effect due to the accumulation of impurities during filtering. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the front view three-dimensional structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention when viewed from above;

[0023] Figure 3 It is a schematic diagram of the front cross-sectional three-dimensional structure of the present invention;

[0024] Figure 4 It is a schematic diagram of a three-dimensional structure of a partial cross section in a front view of the present invention;

[0025] Figure 5 It is a schematic diagram of a partial three-dimensional structure of the rear view of the present invention;

[0026] Figure 6 It is a schematic diagram of a three-dimensional structure of the filter structure of the present invention when viewed from above;

[0027] Figure 7 It is a schematic diagram of the three-dimensional structure of the filtering structure of the present invention from a side view;

[0028] Figure 8 For the present invention Figure 6 A is a partial enlarged schematic diagram of the three-dimensional structure;

[0029] Fig. 9 For the present invention Figure 3 A partial enlarged schematic diagram of the three-dimensional structure at point B in the middle.

[0030] Explanation of the reference numerals in the figure: 1. base; 2. barrel; 3. heater; 4. support frame; 5. material box; 6. anti-bubble component; 61. motor; 62. mounting frame; 63. heating component; 64. heat recovery structure; 641. exhaust pipe; 642. air passage; 643. exhaust port; 65. filter box; 66. filter structure; 661. mounting box; 662. reciprocating screw; 663. connecting disk; 664. cleaning frame; 665. thread sleeve; 67. stirring structure; 671. rotating disk; 672. belt; 673. transmission disk; 674. bevel gear set; 675. connecting shaft; 676. stirring rod; 677. fixed disk; 68. filter screen; 7. screw; 8. collecting box; 9. guide chute. DETAILED DESCRIPTION

[0031] 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.

[0032] See also Figure 1-Figure 9 The present invention provides an injection device for an injection molding machine, comprising a base 1 and a barrel 2; a barrel 2 is fixedly mounted on the top of the base 1, a heater 3 is mounted on the outside of the barrel 2, a screw 7 is arranged inside the barrel 2, a support frame 4 is fixed on one side of the top of the barrel 2, a material box 5 is fixed on the top of the support frame 4, and an anti-bubble component 6 is arranged inside the material box 5; the anti-bubble component 6 comprises a motor 61, a mounting frame 62, a heating component 63, a heat recovery structure 64, a filter box 65, a filter structure 66, a stirring structure 67 and a filter screen 6 8. The heating component 63 is installed on the outside of the material box 5, and a stirring structure 67 is arranged inside the material box 5; a mounting frame 62 is fixed to the top of the material box 5, and a motor 61 is installed on the top of the mounting frame 62; a heat recovery structure 64 is arranged on one side of the top of the material box 5; a filter box 65 is arranged at the bottom of the material box 5, and a filter screen 68 is installed on the top of the filter box 65; a filter structure 66 is arranged on one side of the filter box 65; guide chute 9 is opened inside at both ends of the filter box 65, and a collecting box 8 is fixed on the other side of the filter box 65.

[0033] Reference Figure 1 and Fig. 9As shown: the stirring structure 67 includes a rotating disk 671, a belt 672, a transmission disk 673, a bevel gear set 674, a connecting shaft 675, a stirring rod 676 and a fixed disk 677. The connecting shaft 675 is installed inside the material box 5. The stirring rod 676 is welded on the outside of the connecting shaft 675. The outer side of the top of the connecting shaft 675 is installed with a bevel gear set 674. One end of the bevel gear set 674 is installed with a rotating disk 671. The transmission disk 673 is movably installed at the rear end of the filter box 65. The rotating disk 671 is connected to the transmission disk 673 through a belt 672. The outer side of one end of the transmission disk 673 is installed with a fixed disk. 677, the top end of the connecting shaft 675 passes through the top end of the material box 5 and extends to the inside of the mounting frame 62, the output end of the motor 61 is connected to the top end of the connecting shaft 675, a plurality of stirring rods 676 are provided, and a plurality of the stirring rods 676 are welded together with the connecting shaft 675, the heat recovery structure 64 includes an exhaust pipe 641, an air passage 642 and an exhaust port 643, the exhaust pipe 641 is provided at the top end of the material box 5, the air passage 642 is opened inside the inner wall of the barrel 2, an exhaust port 643 is provided at one end of the air passage 642, and one end of the exhaust pipe 641 is connected to the other end of the air passage 642.

[0034] Specifically, in this embodiment, before injection molding the mold, the plastic is poured into the interior of the material box 5, and then the external power supply starts the heating component 63. After the heating component 63 is started, the plastic inside the material box 5 is dried, and the temperature inside the material box 5 is monitored by the temperature sensor at the top of the interior. When the plastic raw material is drying, the starting motor 61 drives the connecting shaft 675 to rotate, and the rotating connecting shaft 675 drives the stirring rod 676 to rotate, thereby stirring the plastic raw material to make it dry faster. When drying, the high-temperature gas generated will be injected into the interior of the air duct 642 through the exhaust pipe 641. When the high-temperature gas flows inside the air duct 642, it will preheat the barrel 2, so that the barrel 2 will be faster in the subsequent heating process, and the electricity consumed by heating will be saved. After drying, the valve at the bottom of the material box 5 is opened to achieve the effect of stirring and unloading at the same time.

[0035] Reference Figure 1 and Fig. 9As shown: the filtering structure 66 includes an installation box 661, a reciprocating screw rod 662, a connecting plate 663, a cleaning frame 664, a cleaning frame 664 and a thread sleeve 665. The installation box 661 is installed on one side of the filtering box 65. The reciprocating screw rod 662 is installed inside the installation box 661. The thread sleeve 665 is sleeved on the outside of the reciprocating screw rod 662. The cleaning frame 664 is fixed to the top of the thread sleeve 665. A connecting plate 663 is provided on one side of the installation box 661. One end of the connecting plate 663 extends to the inside of the motor 61. One end of the connecting plate 663 is connected to the reciprocating thread. One end of the rod 662 is connected, and the connecting plate 663 is connected to the fixed plate 677 through a connecting belt, the outer side of the reciprocating screw rod 662 is provided with an external thread, the inner side of the wire sleeve 665 is provided with an internal thread, and the reciprocating screw rod 662 and the wire sleeve 665 form a threaded connection, and a plurality of bristles are provided at the bottom end of the cleaning frame 664, and the plurality of bristles are arranged at equal intervals at the bottom end of the cleaning frame 664. Two groups of guide bevel grooves 9 are provided, and the two groups of guide bevel grooves 9 are symmetrically distributed inside the two ends of the filter box 65, and the guide bevel grooves 9 are sloped inside the two ends of the filter box 65.

[0036] Specifically, in the present embodiment, when the plastic raw material falls on the top of the filter screen 68, the filter screen 68 will filter the impurities in the raw material, thereby filtering out the large particles of impurities. At this time, the connecting shaft 675 will drive the transmission disk 673 to rotate through the cooperation of the rotating disk 671 and the belt 672 during the rotation. The transmission disk 673 will drive the connecting disk 663 to rotate through the cooperation of the fixed disk 677 during the rotation. The rotating connecting disk 663 will drive the reciprocating screw rod 662 to rotate, and the rotating reciprocating screw rod 662 will drive the cleaning frame 663 through the cooperation with the wire sleeve 665. 64 reciprocates, so that the surface of the filter screen 68 is cleaned by the brush at the bottom of the cleaning frame 664, and the impurities are swept into the inside of the guide chute 9, and then fall into the inside of the collecting box 8 to complete the filtering and collecting work. The filtered raw materials will fall into the inside of the barrel 2, and are melted by the heating of the heater 3 and the extrusion of the screw 7, and then the molten plastic is injected into the mold, thereby completing the use of the injection device. By drying and filtering the plastic raw materials, the moisture and impurities in the plastic are reduced, making it less likely to produce bubbles when it melts, thereby completing the effect of reducing the generation of bubbles.

[0037] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An injection device for an injection molding machine, comprising a base (1) and a barrel (2); Features: A barrel (2) is fixedly mounted on the top of the base (1), a heater (3) is mounted on the outside of the barrel (2), a screw (7) is arranged inside the barrel (2), a support frame (4) is fixed on one side of the top of the barrel (2), a material box (5) is fixed on the top of the support frame (4), and an anti-bubble component (6) is arranged inside the material box (5); The anti-bubble component (6) comprises a motor (61), a mounting frame (62), a heating component (63), a heat recovery structure (64), a filter box (65), a filter structure (66), a stirring structure (67) and a filter screen (68); the heating component (63) is installed on the outside of the material box (5); and the stirring structure (67) is arranged inside the material box (5); A mounting frame (62) is fixed to the top of the material box (5), a motor (61) is installed at the top of the mounting frame (62), a heat recovery structure (64) is arranged on one side of the top of the material box (5), a filter box (65) is arranged at the bottom of the material box (5), a filter screen (68) is installed at the top of the filter box (65), a filter structure (66) is arranged on one side of the filter box (65), guide chute grooves (9) are provided inside both ends of the filter box (65), and a collection box (8) is fixed on the other side of the filter box (65).

2. An injection device for an injection molding machine according to claim 1, characterized in that: The stirring structure (67) comprises a rotating disk (671), a belt (672), a transmission disk (673), a bevel gear set (674), a connecting shaft (675), a stirring rod (676) and a fixed disk (677); the connecting shaft (675) is installed inside the material box (5); the stirring rod (676) is welded to the outer side of the connecting shaft (675); the bevel gear set (674) is installed on the outer side of the top end of the connecting shaft (675); a rotating disk (671) is installed at one end of the bevel gear set (674); the transmission disk (673) is movably installed at the rear end of the filter box (65); the rotating disk (671) is connected to the transmission disk (673) via a belt (672); and a fixed disk (677) is installed on the outer side of one end of the transmission disk (673).

3. An injection device for an injection molding machine according to claim 2, characterized in that: The top end of the connecting shaft (675) passes through the top end of the material box (5) and extends to the interior of the mounting frame (62), and the output end of the motor (61) is connected to the top end of the connecting shaft (675).

4. The injection device for an injection molding machine according to claim 2, characterized in that: A plurality of stirring rods (676) are provided, and the plurality of stirring rods (676) are welded together with the connecting shaft (675).

5. The injection device for an injection molding machine according to claim 1, characterized in that: The heat recovery structure (64) comprises an exhaust pipe (641), an air passage (642) and an exhaust port (643); the exhaust pipe (641) is arranged at the top end of the material box (5); the air passage (642) is opened inside the inner wall of the barrel (2); one end of the air passage (642) is provided with an exhaust port (643); one end of the exhaust pipe (641) is connected to the other end of the air passage (642).

6. The injection device for an injection molding machine according to claim 1, characterized in that: The filtering structure (66) comprises an installation box (661), a reciprocating screw rod (662), a connecting plate (663), a cleaning frame (664), a cleaning frame (664) and a thread sleeve (665); the installation box (661) is installed on one side of the filtering box (65); a reciprocating screw rod (662) is installed inside the installation box (661); a thread sleeve (665) is sleeved on the outer side of the reciprocating screw rod (662); a cleaning frame (664) is fixed to the top end of the thread sleeve (665); and a connecting plate (663) is provided on one side of the installation box (661).

7. An injection device for an injection molding machine according to claim 6, characterized in that: One end of the connecting disk (663) extends to the interior of the motor (61), one end of the connecting disk (663) is connected to one end of the reciprocating screw rod (662), and the connecting disk (663) is connected to the fixed disk (677) via a connecting belt.

8. The injection device for an injection molding machine according to claim 6, characterized in that: The outer side of the reciprocating screw rod (662) is provided with an external thread, and the inner side of the thread sleeve (665) is provided with an internal thread, so that a threaded connection is formed between the reciprocating screw rod (662) and the thread sleeve (665).

9. The injection device for an injection molding machine according to claim 6, characterized in that: A plurality of bristles are arranged at the bottom end of the cleaning frame (664), and the bristles are arranged at equal intervals at the bottom end of the cleaning frame (664).

10. The injection device for an injection molding machine according to claim 1, characterized in that: Two groups of guide chute grooves (9) are provided, and the two groups of guide chute grooves (9) are symmetrically distributed inside the two ends of the filter box (65), and the guide chute grooves (9) are sloped inside the two ends of the filter box (65).

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