CN118906399A - Air flow sensor processing plastic housing injection molding equipment - Google Patents

Abstract

The present invention discloses an injection molding device for processing a plastic shell of an air flow sensor. The present invention relates to the field of plastic injection molding technology, comprising a rotating shaft, a spiral plate fixedly connected to the outer side of the rotating shaft, a material guide strip fixedly connected to the outer side of the spiral plate, a round rod fixedly connected to the edge of the spiral plate, a scraper fixedly connected to the outer side of the round rod, the scraper is arranged on the side of the round rod close to the shell, and a heating plate fixedly connected to the side of the spiral plate close to the feed assembly. There are multiple heating plates, and the multiple heating plates are evenly distributed around the rotating shaft. The injection molding device for processing a plastic shell of an air flow sensor applies resistance to the molten plastic on the spiral plate through the material guide strip. The material guide strip prolongs the heating time of the material and increases the heated area, which helps to improve the uniformity of material heating. Different parts of the material have more opportunities to be fully heated, reducing the situation where the temperature difference inside the material is large.

Description

An injection molding device for processing plastic shell of air flow sensor

Technical Field

The invention relates to the technical field of plastic injection molding, in particular to an injection molding device for processing a plastic shell of an air flow sensor.

Background Art

Injection molding machine, also known as injection molding machine or injection machine, is the main molding equipment for making plastic products of various shapes from thermoplastics or thermosetting plastics using plastic molding molds. It is divided into vertical, horizontal and all-electric types. The injection molding machine can heat the plastic and apply high pressure to the molten plastic to make it eject and fill the mold cavity. Injection molding machine, also known as injection molding machine or injection machine, is called beer machine in many factories, and the injection molded products are called beer parts. It is the main molding equipment for making plastic products of various shapes from thermoplastics or thermosetting materials using plastic molding molds. Injection molding machines can be divided into vertical, horizontal and vertical-horizontal composite types according to the arrangement of the injection device and the clamping device.

When the plastic particles enter the inner cavity of the injection molding machine, they are prone to incomplete melting, affecting production efficiency and quality. In addition, the plastic particles at the connection between the feed point and the inner cavity of the machine melt, but they are not completely melted, which can easily lead to adhesion at the connection.

Summary of the invention

To achieve the above objectives, the present invention is implemented through the following technical solutions: an air flow sensor processing plastic shell injection molding device, comprising a base, a support block is fixedly connected to the top edge side of the base, a mold is fixedly connected to one end of the base away from the support block, a discharge port is provided on the outer side of the base close to the mold, a motor is fixedly connected to the outer side of the support block, the motor passes through the support block, a shell is arranged on the outer side of the mold, and both ends of the shell are fixedly connected to the mold and the support block respectively;

A feed assembly, which is fixedly mounted on the top of the shell and is located on a side close to the support block;

A conveying assembly, which is fixedly mounted inside the housing and is fixedly connected to an output end of the motor;

The conveying assembly includes a rotating shaft, which is fixedly connected to the output end of the motor, and a spiral plate is fixedly connected to the outer side of the rotating shaft, and the spiral plate is located inside the shell. A material guide bar is fixedly connected to the outer side of the spiral plate, and the material guide bar is set in a triangular shape. The plastic is added to the inside of the cylinder, and then the plastic enters the inside of the shell through the cylinder. The motor is connected to an external power supply to work, and the motor drives the rotating shaft to rotate, and the rotating shaft drives the spiral plate to rotate, and the spiral plate drives the plastic to move toward the mold. At the same time, the heating tube heats the plastic on the spiral plate so that the plastic is in a molten state. By setting the material guide bar, resistance is applied to the molten plastic on the spiral plate. The material guide bar prolongs the heating time of the material and increases the heating area, which helps to improve the uniformity of the material heating. Different parts of the material have more opportunities to be fully heated, reducing the situation where the temperature difference inside the material is large. The triangular streamline of the material guide bar can prevent the stagnation of the molten plastic near the block when reducing the flow rate of the molten plastic. The edge of the spiral plate is fixedly connected There are round rods, and there are multiple round rods. The multiple round rods are evenly distributed around the rotating shaft. A scraper is fixedly connected to the outside of the round rod. The rotating shaft drives the spiral plate to rotate, and the spiral plate drives the scraper to rotate through the round rod, so as to clean the inner wall of the shell to avoid residue on the inner wall of the shell. The scraper is arranged on the side of the round rod close to the shell, and a heating plate is fixedly connected to the side of the spiral plate close to the feeding component. Multiple heating plates are arranged at the connection between the cylinder and the shell. The rotating shaft drives the spiral plate to rotate, and the spiral plate drives the heating plate to rotate, so that the heating plate preheats the plastic particles at the connection at intervals, so that the material is in a relatively complex but orderly temperature distribution state before entering the injection machine body. This temperature distribution will gradually tend to be uniform in the subsequent injection and molding process, which is beneficial to improving the quality uniformity of the product, and can also effectively avoid local overheating, and reduce the possibility of decomposition and deterioration of the material at the feeding point. There are multiple heating plates, and the multiple heating plates are evenly distributed around the rotating shaft.

Preferably, the shell includes an outer shell, which is fixedly connected to the support block, a conical cylinder is fixedly connected to one end of the outer shell away from the support block, the conical cylinder is fixedly connected to the mold, a heating tube is fixedly connected to the outer side of the middle part of the outer shell, a protective cover is fixedly connected to the outer side of the outer shell, and the heating tube is located inside the protective cover.

A conical block is fixedly connected to the outer side of the rotating shaft, and the conical block is located inside the conical cylinder. A positioning component is provided on the side of the rotating shaft close to the conical block. A bent plate is fixedly connected to one end of the rotating shaft close to the positioning component. The bent plate is elastic, and a through groove is opened inside the conical block.

Preferably, the positioning assembly includes a circular plate, which is slidably connected to the rotating shaft, a through hole is opened on the outer side of the circular plate, and a fixing ring is fixedly connected to the side of the circular plate close to the bent plate. The molten plastic moves along the spiral plate toward the conical block, and then the molten plastic is injected into the mold through the through hole and the through groove on the circular plate. The rotating shaft speed increases, and the spiral plate drives the molten plastic to flow faster. At the same time, the rotating shaft drives the bent plate to rotate. Under the centrifugal effect, the bent plate extends outward, so that extrusion is generated between the bent plate and the outer fixing ring, so that the fixing ring drives the fixing block to move toward the conical block, and the fixing block slides inside the through hole. At this time, the gap of the through hole becomes smaller. When the flow rate becomes larger and the horizontal When the cross-sectional area becomes smaller, the material can be injected into the mold cavity at a faster speed. For some large molds or products that need to be filled quickly, the injection time can be significantly shortened. By adjusting the rotation speed of the rotating shaft, it can adapt to the needs of different products. The bent plate is located inside the fixed ring. There are multiple fixed rings. The multiple fixed rings are stepped from the inside to the outside, and the width of the fixed ring on the side close to the rotating shaft is lower than the fixed ring on the outside. A fixed block is fixedly connected to the side of the circular plate away from the fixed ring. There are four fixed blocks, which are evenly distributed around the rotating shaft. The fixed blocks are slidably connected to the through grooves, and the fixed blocks are elastic.

Preferably, the feeding assembly includes a cylinder, which is fixedly connected to the shell, and the bottom of the cylinder is set in a hopper shape. An intermediate rod is arranged inside the cylinder, and a guide plate is fixedly connected to the outer side of the intermediate rod, and the guide plate is set in a conical spiral shape. The inner wall of the cylinder is fixedly connected to an arc plate. Plastic is added to the interior of the cylinder, and under the action of the gravity of the plastic particles themselves, the material is fed downward along the spiral of the guide plate. The plastic particles leave the guide plate and enter the interior of the positioning plate. At this time, gas is passed into the connecting pipe so that the gas screens the plastic particles inside the positioning plate through the connecting holes. The powder present in the plastic particles is separated from the plastic particles and flows upward under the drive of the airflow. The airflow contacts the bottom of the arc plate, and then the gas is discharged from the air outlet. Without the action of external force, the dust falls to the top of the positioning plate under the action of gravity, and finally enters the interior of the aggregate frame through the discharge hole. When the powder is mixed with the particles, the powder will be filled in The gaps between the particles increase the overall internal friction of the material and hinder the flow of the material. At the same time, the existing powder may re-agglomerate or separate from the particles due to the large shear force during the mixing process, destroying the original mixing state, which in turn affects the consistency of the product, as well as problems such as uneven surface and defects. The arc plate is set to be concave downward, and the guide plate passes through the arc plate. The inner wall of the cylinder is fixedly connected with a positioning plate, which is located below the arc plate, and the top of the positioning plate is fixedly connected to the bottom of the guide plate. The outer side of the cylinder is fixedly connected with a connecting pipe, and a connecting hole is opened inside the positioning plate. The gas introduced is cold air to prevent some powders from softening, sticking or even melting when the temperature rises. The softened or stuck powder will adhere to the inner wall of the component, making it difficult to move smoothly with the material flow as in normal conditions. The connecting hole There are multiple numbers of them, a connecting pipe passes through the cylinder and is connected to the connecting hole, and the connecting pipe is located at the end of the positioning plate away from the guide plate, and the inner wall of the positioning plate is fixedly connected with an inclined plate, and the plastic particles enter the interior of the positioning plate, and gas is introduced. Under the flow of airflow, the inclined plate is deformed, so that the airflow enters the interior of the positioning plate. At this time, the plastic particles fall on the surface of the deformed inclined plate and move downward along the inclined plate. The airflow drives the dust spiral upward, so that each plastic particle is in contact with the airflow, avoiding the existence of some dust sticking to the plastic particles and not being completely screened. The inclined plate is located below the guide plate. There are multiple numbers of inclined plates, and multiple inclined plates are alternately arranged with multiple connecting holes. The inclined plate is elastic, and a feeding pipe is fixedly connected to the middle of the bottom of the positioning plate. An annular groove is provided on the inner wall of the cylinder, and the annular groove is located below the positioning plate. A guide groove is provided on the side of the cylinder close to the annular groove, and the end of the guide groove away from the annular groove passes through the cylinder The cylinder and the connection are preheated by the heating plate, so that condensation may occur on the bottom side of the positioning plate to form water droplets. The water droplets slide down along the positioning plate, so that the water droplets leave the cylinder through the annular groove and the guide groove to prevent the water droplets from falling into the molten plastic. When the water droplets enter the molten plastic, since the temperature of the molten plastic is much higher than the boiling point of water, the water droplets will quickly vaporize into water vapor. Due to the compressibility of the gas, it will interfere with the normal arrangement and flow of the plastic molecules, reduce the effective flow area of the plastic, and deteriorate the fluidity. This may result in the plastic not being able to completely fill the mold cavity during the injection molding process, resulting in short shots, that is, the mold cavity is not completely filled, affecting the product quality. A discharge hole is provided on the inner wall of the cylinder, and the discharge hole passes through the cylinder. The discharge hole is located above the positioning plate. A collection frame is fixedly connected to the outer side of the cylinder near the discharge hole, and an air outlet is provided on the outer side of the cylinder near the arc plate.

The present invention provides an injection molding device for processing a plastic housing of an air flow sensor. It has the following beneficial effects:

1. The air flow sensor processing plastic shell injection molding equipment applies resistance to the molten plastic on the spiral plate through the guide bar. The guide bar prolongs the heating time of the material and increases the heating area, which helps to improve the uniformity of material heating. Different parts of the material have more opportunities to be fully heated, reducing the situation where the temperature difference inside the material is large. The triangular streamline of the guide bar can reduce the flow rate of the molten plastic and avoid stagnation of the molten plastic near the block.

2. The air flow sensor processing plastic shell injection molding equipment preheats the plastic particles at the connection at intervals through the heating plate, so that the material is in a relatively complex but orderly temperature distribution state before entering the injection machine body. This temperature distribution will gradually tend to be uniform in the subsequent injection and molding process, which is beneficial to improving the quality uniformity of the product, and can also effectively avoid local overheating, reducing the possibility of decomposition and deterioration of the material at the feed point.

3. The air flow sensor processing plastic shell injection molding equipment increases the flow rate and reduces the cross-sectional area, so that the material can be injected into the mold cavity at a faster speed. For some large molds or products that need to be filled quickly, the injection time can be significantly shortened, and the rotation speed of the shaft can be adjusted to meet the needs of different products.

4. The air flow sensor is processed by plastic shell injection molding equipment. The gas passes through the connecting holes to screen the plastic particles inside the positioning plate. The powder in the plastic particles is driven by the airflow and separates from the plastic particles and flows upward. During the mixing process, the existing powder may re-agglomerate or separate from the particles due to the large shear force, destroying the original mixing state, thereby affecting the consistency of the product, as well as problems such as uneven surface and defects.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the external structure of an injection molding device for processing a plastic housing of an air flow sensor according to the present invention;

FIG2 is another side view schematic diagram of the present invention;

FIG3 is a schematic diagram of a cross-sectional view of the present invention;

FIG4 is a schematic diagram of the structure of a conveying assembly according to the present invention;

FIG5 is a schematic diagram of a partial structure of a conveying assembly of the present invention;

FIG6 is a schematic diagram of the structure of a positioning assembly according to the present invention;

FIG7 is another side view of the positioning assembly of the present invention;

FIG8 is a schematic diagram of a cross-sectional view of a feed assembly according to the present invention;

FIG9 is a schematic diagram of a cross-sectional view of a feed assembly according to the present invention;

FIG. 10 is a schematic diagram of the partial structure of the feed assembly of the present invention.

In the figure: 1, base; 2, support block; 3, mold; 4, shell; 41, shell; 42, protective cover; 43, heating tube; 44, conical cylinder; 5, feed assembly; 51, cylinder; 52, middle rod; 53, guide plate; 54, arc plate; 55, positioning plate; 56, connecting pipe; 57, connecting hole; 58, annular groove; 59, guide groove; 510, feed pipe; 511, air outlet; 5 12. Aggregate frame; 513. Discharge hole; 514. Inclined plate; 6. Discharge port; 7. Motor; 8. Conveying assembly; 81. Rotating shaft; 82. Spiral plate; 83. Guide bar; 84. Round rod; 85. Scraper; 86. Positioning assembly; 861. Round plate; 862. Fixed block; 863. Fixed ring; 864. Through hole; 87. Conical block; 88. Heating plate; 89. Bending plate; 810. Through groove.

DETAILED DESCRIPTION

The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

In the first embodiment, as shown in FIGS. 1 to 5 , the present invention provides a technical solution: an injection molding device for processing a plastic shell of an air flow sensor, comprising a base 1, a support block 2 is fixedly connected to the top edge side of the base 1, a mold 3 is fixedly connected to one end of the base 1 away from the support block 2, a discharge port 6 is provided on the outer side of the base 1 close to the mold 3, a motor 7 is fixedly connected to the outer side of the support block 2, the motor 7 penetrates the support block 2, a shell 4 is arranged on the outer side of the mold 3, and both ends of the shell 4 are fixedly connected to the mold 3 and the support block 2 respectively;

A feed assembly 5, which is fixedly mounted on the top of the housing 4 and is located on a side close to the support block 2;

A conveying assembly 8, which is fixedly mounted inside the housing 4 and is fixedly connected to an output end of the motor 7;

The conveying assembly 8 includes a rotating shaft 81, which is fixedly connected to the output end of the motor 7. A spiral plate 82 is fixedly connected to the outer side of the rotating shaft 81. The spiral plate 82 is located inside the shell 4. A material guide strip 83 is fixedly connected to the outer side of the spiral plate 82. The material guide strip 83 is triangularly arranged. Plastic is added to the inside of the cylinder 51, and then the plastic enters the inside of the shell 41 through the cylinder 51. The motor 7 is connected to an external power supply to work. The motor 7 drives the rotating shaft 81 to rotate, the rotating shaft 81 drives the spiral plate 82 to rotate, and the spiral plate 82 drives the plastic to move toward the mold 3, while the heating tube 43 heats the plastic on the spiral plate 82 so that the plastic is in a molten state. By setting the guide strip 83, resistance is applied to the molten plastic on the spiral plate 82. The guide strip 83 prolongs the heating time of the material and increases the heating area, which helps to improve the uniformity of material heating. Different parts of the material have more opportunities to be fully heated, reducing the situation where the temperature difference inside the material is large. The guide strip 83 is triangular streamlined, and the flow rate of the molten plastic is reduced to avoid stagnation of the molten plastic near the stopper. The edge of the spiral plate 82 is fixedly connected with a round rod 8 4, there are multiple round rods 84, and the multiple round rods 84 are evenly distributed around the rotating shaft 81. The outer side of the round rod 84 is fixedly connected with a scraper 85. The rotating shaft 81 drives the spiral plate 82 to rotate, and the spiral plate 82 drives the scraper 85 to rotate through the round rod 84, so as to clean the inner wall of the shell 41 to avoid residue on the inner wall of the shell 41. The scraper 85 is arranged on the side of the round rod 84 close to the shell 4, and the side of the spiral plate 82 close to the feeding assembly 5 is fixedly connected with a heating plate 88. A plurality of heating plates 88 are arranged at the connection between the cylinder 51 and the shell 41. The rotating shaft 81 drives the spiral plate 82 to rotate. The spiral plate 82 rotates, and the spiral plate 82 drives the heating plate 88 to rotate, so that the heating plate 88 preheats the plastic particles at the connection at intervals, so that the material is in a relatively complex but orderly temperature distribution state before entering the injection molding machine body. This temperature distribution will gradually tend to be uniform in the subsequent injection and molding process, which is beneficial to improving the quality uniformity of the product, and can also effectively avoid local overheating, reducing the possibility of decomposition and deterioration of the material at the feed point. There are multiple heating plates 88, and the multiple heating plates 88 are evenly distributed around the rotating shaft 81.

The second embodiment, based on the first embodiment, please refer to Figures 6 and 7, the shell 4 includes an outer shell 41, the outer shell 41 is fixedly connected to the support block 2, the end of the outer shell 41 away from the support block 2 is fixedly connected to a conical cylinder 44, the conical cylinder 44 is fixedly connected to the mold 3, a heating tube 43 is fixedly connected to the outer side of the middle part of the outer shell 41, and a protective cover 42 is fixedly connected to the outer side of the outer shell 41, and the heating tube 43 is located inside the protective cover 42.

A conical block 87 is fixedly connected to the outer side of the rotating shaft 81, and the conical block 87 is located inside the conical cylinder 44. A positioning assembly 86 is provided on the side of the rotating shaft 81 close to the conical block 87. A bent plate 89 is fixedly connected to one end of the rotating shaft 81 close to the positioning assembly 86. The bent plate 89 is elastic, and a through groove 810 is opened inside the conical block 87.

The positioning assembly 86 includes a circular plate 861, which is slidably connected to the rotating shaft 81. A through hole 864 is provided on the outer side of the circular plate 861. A fixing ring 863 is fixedly connected to the side of the circular plate 861 close to the bent plate 89. The molten plastic moves along the spiral plate 82 toward the direction of the conical block 87. Then, the molten plastic is injected into the mold 3 through the through hole 864 and the through groove 810 on the circular plate 861. The rotation speed of the rotating shaft 81 increases, and the spiral plate 82 drives the flow rate of the molten plastic to increase. At the same time, the rotating shaft 81 drives the bent plate 89 to rotate. Under the centrifugal effect, the bent plate 89 extends outward, so that extrusion is generated between the bent plate 89 and the outer fixing ring 863, so that the fixing ring 863 drives the fixing block 862 to move toward the conical block 87, and the fixing block 862 slides inside the through hole 864. At this time, the gap of the through hole 864 becomes smaller. When the flow rate increases and the cross-sectional area decreases, the material can be injected into the mold cavity at a faster speed. For some large molds or products that need to be filled quickly, the injection time can be significantly shortened. By adjusting the rotation speed of the rotating shaft 81, the needs of different products can be adapted. The bent plate 89 is located inside the fixed ring 863. There are multiple fixed rings 863. The multiple fixed rings 863 are arranged in a stepped manner from the inside to the outside, and the width of the fixed ring 863 on the side close to the rotating shaft 81 is lower than the fixed ring 863 on the outside. A fixed block 862 is fixedly connected to the side of the circular plate 861 away from the fixed ring 863. There are four fixed blocks 862, which are evenly distributed around the rotating shaft 81. The fixed block 862 is slidably connected to the through groove 810, and the fixed block 862 is elastic.

The third embodiment, based on the first and second embodiments, please refer to Figures 8 to 10, the feeding assembly 5 includes a cylinder 51, the cylinder 51 is fixedly connected to the housing 41, the bottom of the cylinder 51 is set in a hopper shape, an intermediate rod 52 is arranged inside the cylinder 51, the outer side of the intermediate rod 52 is fixedly connected with a guide plate 53, the guide plate 53 is set in a conical spiral shape, and the inner wall of the cylinder 51 is fixedly connected with an arc plate 54. When plastic is added to the inside of the cylinder 51, the plastic particles are fed along the guide plate 53 under the action of their own gravity. The spiral feeds downward, and the plastic particles leave the guide plate 53 and enter the interior of the positioning plate 55. At this time, gas is introduced into the connecting pipe 56, so that the gas screens the plastic particles inside the positioning plate 55 through the connecting hole 57. Driven by the airflow, the powder in the plastic particles separates from the plastic particles and flows upward. The airflow contacts the bottom of the arc plate 54, and then the gas is discharged from the air outlet 511. Without the action of external force, the dust falls to the top of the positioning plate 55 under the action of gravity, and finally enters the aggregate through the discharge hole 513. When the powder is mixed with the particles inside the frame 512, the powder will fill the gaps between the particles, increasing the internal friction of the material as a whole and hindering the flow of the material. At the same time, during the mixing process, the powder may re-agglomerate or separate from the particles due to the large shear force, destroying the original mixing state, thereby affecting the consistency of the product, as well as problems such as uneven surface and defects. The arc plate 54 is set to be concave downward, and the guide plate 53 passes through the arc plate 54. The inner wall of the cylinder 51 is fixedly connected with a positioning plate 55, which is located below the arc plate 54, and the top of the positioning plate 55 is fixedly connected to the bottom of the guide plate 53. The outer side of the cylinder 51 is fixedly connected with a connecting pipe 56. A connecting hole 57 is opened inside the positioning plate 55, and the gas introduced is cold air to prevent some powders from softening, sticking or even melting when the temperature rises. The softened or sticked powder will adhere to the inner wall of the component and it is difficult to move smoothly with the material flow as in the normal state. There are multiple connecting holes 57. The connecting pipe 56 passes through the cylinder 51 and is connected to the connecting hole 57. The connecting pipe 56 is located at the end of the positioning plate 55 away from the guide plate 53. The inner wall of the positioning plate 55 is fixedly connected with the inclined plate 514. The plastic particles enter the interior of the positioning plate 55, and the gas is introduced. Under the flow of the airflow, the inclined plate 514 is deformed, so that the airflow enters the interior of the positioning plate 55. At this time, the plastic particles fall on the surface of the deformed inclined plate 514 and move downward along the inclined plate 514. The airflow drives the dust spiral upward, so that each plastic particle is The inclined plate 514 is located below the guide plate 53, and there are multiple inclined plates 514. Multiple inclined plates 514 are alternately arranged with multiple connecting holes 57. The inclined plate 514 is elastic. A feed pipe 510 is fixedly connected to the middle of the bottom of the positioning plate 55. An annular groove 58 is provided on the inner wall of the cylinder 51. The annular groove 58 is located below the positioning plate 55. A guide groove 59 is provided on one side of the cylinder 51 close to the annular groove 58. The guide groove 59 is away from the annular groove 58. One end of the groove 58 passes through the cylinder 51, and the connection is preheated by the heating plate 88, so that condensation may occur on the bottom side of the positioning plate 55 to form water droplets. The water droplets slide down along the positioning plate 55, so that the water droplets leave the cylinder 51 through the annular groove 58 and the guide groove 59 to prevent the water droplets from falling into the molten plastic. When the water droplets enter the molten plastic, since the temperature of the molten plastic is much higher than the boiling point of water, the water droplets will quickly vaporize into water vapor. Due to the compressibility of the gas, it will interfere with the normal arrangement and flow of the plastic molecules. The movement reduces the effective flow area of the plastic and deteriorates its fluidity. This may result in the failure of the plastic to completely fill the mold cavity during the injection molding process, resulting in a short shot, that is, the mold cavity is not completely filled, affecting product quality. A discharge hole 513 is provided on the inner wall of the cylinder 51. The discharge hole 513 penetrates the cylinder 51. The discharge hole 513 is located above the positioning plate 55. A collection frame 512 is fixedly connected to the outer side of the cylinder 51 near the discharge hole 513. An air outlet hole 511 is provided on the outer side of the cylinder 51 near the arc plate 54.

When in use, plastic is added to the inside of the cylinder 51. Under the action of the gravity of the plastic particles themselves, the plastic particles are fed downward along the spiral of the guide plate 53. The plastic particles leave the guide plate 53 and enter the inside of the positioning plate 55. At this time, gas is introduced into the connecting pipe 56, so that the gas passes through the connecting hole 57 to screen the plastic particles inside the positioning plate 55. Driven by the airflow, the powder in the plastic particles separates from the plastic particles and flows upward. The airflow contacts the bottom of the arc plate 54, and then the gas is discharged from the air outlet 511. In the absence of external force, the dust falls to the top of the positioning plate 55 under the action of gravity, and finally enters the inside of the aggregate frame 512 through the discharge hole 513. The screened plastic particles enter the inside of the outer shell 41 through the discharge pipe 510.

The motor 7 is connected to an external power source to work, and the motor 7 drives the rotating shaft 81 to rotate, and the rotating shaft 81 drives the spiral plate 82 to rotate, and the spiral plate 82 drives the plastic to move toward the mold 3. At the same time, the heating tube 43 heats the plastic on the spiral plate 82 to make the plastic in a molten state. By setting the guide strip 83, resistance is applied to the molten plastic on the spiral plate 82. The guide strip 83 prolongs the heating time of the material and increases the heated area, which helps to improve the uniformity of material heating.

The molten plastic moves along the spiral plate 82 toward the conical block 87, and then the molten plastic is injected into the mold 3 through the through hole 864 and the through groove 810 on the circular plate 861. The rotation speed of the rotating shaft 81 increases, and the spiral plate 82 drives the flow rate of the molten plastic to increase. At the same time, the rotating shaft 81 drives the bent plate 89 to rotate. Under the centrifugal effect, the bent plate 89 extends outward, so that extrusion is generated between the bent plate 89 and the outer fixed ring 863, so that the fixed ring 863 drives the fixed block 862 to move toward the conical block 87, and the fixed block 862 slides inside the through hole 864. At this time, the gap of the through hole 864 becomes smaller. When the flow rate increases and the cross-sectional area decreases, the material can be injected into the mold cavity at a faster speed.

Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims (10)

1. An air flow sensor processing plastic housing injection molding apparatus, comprising:

The automatic feeding device comprises a base (1), wherein a supporting block (2) is fixedly connected to the edge side of the top of the base (1), a die (3) is fixedly connected to one end, away from the supporting block (2), of the base (1), a discharge hole (6) is formed in the outer side, close to the die (3), of the base (1), a motor (7) is fixedly connected to the outer side, close to the supporting block (2), of the supporting block (2), the motor (7) penetrates through the supporting block (2), a shell (4) is arranged on the outer side, and two ends of the shell (4) are fixedly connected with the die (3) and the supporting block (2) respectively;

The feeding assembly (5) is fixedly arranged at the top of the shell (4), and the feeding assembly (5) is positioned at one side close to the supporting block (2);

The conveying assembly (8), the conveying assembly (8) is fixedly arranged in the shell (4), and the conveying assembly (8) is fixedly connected with the output end of the motor (7);

Wherein, conveying assembly (8) include pivot (81), the output fixed connection of pivot (81) and motor (7), the outside fixedly connected with screw plate (82) of pivot (81), screw plate (82) are located the inside of casing (4), the outside fixedly connected with guide strip (83) of screw plate (82), guide strip (83) are triangle-shaped setting, the edge fixedly connected with round bar (84) of screw plate (82), the quantity of round bar (84) has a plurality ofly, a plurality of round bar (84) use pivot (81) as central evenly distributed, the outside fixedly connected with scraper blade (85) of round bar (84), scraper blade (85) set up in one side that round bar (84) are close to casing (4), screw plate (82) are close to feed assembly (5) one side fixedly connected with hot plate (88), the quantity of hot plate (88) has a plurality of hot plate (88) uses pivot (81) evenly distributed as the center.

2. An air flow sensor processing plastic housing injection molding apparatus as claimed in claim 1, wherein: the shell (4) comprises a shell (41), the shell (41) is fixedly connected with the supporting block (2), one end of the shell (41) away from the supporting block (2) is fixedly connected with a conical cylinder (44), the conical cylinder (44) is fixedly connected with the die (3), a heating pipe (43) is fixedly connected to the outer side of the middle part of the shell (41), a protective cover (42) is fixedly connected to the outer side of the shell (41), and the heating pipe (43) is located in the protective cover (42).

3. An air flow sensor processing plastic housing injection molding apparatus as claimed in claim 2, wherein: the outside fixedly connected with toper piece (87) of pivot (81), toper piece (87) are located the inside of toper section of thick bamboo (44), one side that pivot (81) are close to toper piece (87) is provided with locating component (86), one end fixedly connected with bent plate (89) that pivot (81) are close to locating component (86), logical groove (810) have been seted up to the inside of toper piece (87).

4. An air flow sensor processing plastic housing injection molding apparatus as claimed in claim 3, wherein: the positioning assembly (86) comprises a circular plate (861), the circular plate (861) is in sliding connection with the rotating shaft (81), a through hole (864) is formed in the outer side of the circular plate (861), and a fixing ring (863) is fixedly connected to one side, close to the bent plate (89), of the circular plate (861).

5. An air flow sensor processing plastic housing injection molding apparatus as claimed in claim 4, wherein: the bending plate (89) is located inside the fixed ring (863), the fixed ring (863) is multiple in number, the fixed ring (863) is arranged in a step mode from inside to outside, the fixed ring (863) is close to the fixed ring (863) of one side of the rotating shaft (81) and the width of the fixed ring (863) is lower than that of the fixed ring (863) on the outer side, and one side of the circular plate (861) away from the fixed ring (863) is fixedly connected with a fixed block (862).

6. An air flow sensor processing plastic housing injection molding apparatus as claimed in claim 5, wherein: the number of the fixing blocks (862) is four, the four fixing blocks (862) are uniformly distributed by taking the rotating shaft (81) as the center, the fixing blocks (862) are in sliding connection with the through grooves (810), and the fixing blocks (862) are elastic.

7. An air flow sensor processing plastic housing injection molding apparatus as claimed in claim 1, wherein: the feeding assembly (5) comprises a cylinder (51), the cylinder (51) is fixedly connected with the shell (41), the bottom of the cylinder (51) is in a blanking hopper shape, a middle rod (52) is arranged in the cylinder (51), a guide plate (53) is fixedly connected to the outer side of the middle rod (52), and the guide plate (53) is in a conical spiral shape.

8. An air flow sensor processing plastic housing injection molding apparatus as set forth in claim 7, wherein: the inner wall fixedly connected with arc (54) of drum (51), arc (54) are the undercut setting, deflector (53) run through arc (54), the inner wall fixedly connected with locating plate (55) of drum (51), locating plate (55) are located the below of arc (54), just the top of locating plate (55) and the bottom fixed connection of deflector (53), the outside fixedly connected with connecting pipe (56) of drum (51), communication hole (57) have been seted up to the inside of locating plate (55), the quantity of communication hole (57) has a plurality of, connecting pipe (56) run through drum (51) and communication hole (57) intercommunication, just connecting pipe (56) are located the one end that deflector (53) was kept away from to locating plate (55).

9. An air flow sensor processing plastic housing injection molding apparatus as set forth in claim 8, wherein: the inner wall fixedly connected with swash plate (514) of locating plate (55), swash plate (514) are located the below of deflector (53), the quantity of swash plate (514) is a plurality of swash plate (514) set up in turn with a plurality of intercommunicating pore (57), swash plate (514) have elasticity, department fixedly connected with unloading pipe (510) in the middle of the bottom of locating plate (55), annular (58) have been seted up to the inner wall of drum (51), annular (58) are located the below of locating plate (55).

10. An air flow sensor processing plastic housing injection molding apparatus as claimed in claim 9, wherein: the utility model discloses a cylinder, including cylinder (51), annular groove (58) and discharge hole (513) are seted up to one side that cylinder (51) is close to annular groove (58), cylinder (51) are run through to one end that annular groove (58) was kept away from to guide groove (59), discharge hole (513) are seted up to the inner wall of cylinder (51), cylinder (51) are run through to discharge hole (513), discharge hole (513) are located the top of locating plate (55), the outside that cylinder (51) is close to discharge hole (513) fixedly connected with frame (512) that gathers materials, venthole (511) have been seted up in the outside that cylinder (51) is close to arc (54).