Injection molding machine for processing modified engineering plastics

Abstract

The utility model discloses an injection molding machine for modified engineering plastic processing, and relates to the technical field of injection molding machine equipment, the injection molding machine comprises an injection molding machine main body, the injection molding machine main body is used for an injection mold of modified plastic, and the injection molding machine main body comprises a bottom plate, a movable male plate, a fixedly arranged female plate and a rotationally arranged spiral feeding roller; the exhaust assembly is used for removing air in molten modified plastic in the injection molding process, the drying assembly is used for drying modified plastic particles, the drying assembly is used for removing moisture in plastic raw materials through heating, and the moisture in the raw materials is reduced to an extremely low level; the raw materials can reach an ideal dry state before being processed, redundant water vapor is automatically exhausted through the exhaust assembly, bubbles can be effectively reduced, the surface of a product is smoother and flawless, and the overall quality of the product is improved.

Description

Technical Field

[0001] This utility model relates to the field of injection molding machine equipment technology, and in particular to an injection molding machine for processing modified engineering plastics. Background Technology

[0002] Modified plastics are plastic materials produced by modifying general-purpose and engineering plastics through methods such as filling, blending, and reinforcement. They improve the flame retardancy, strength, impact resistance, and toughness of plastics, and are widely used in home appliances, automobiles, construction, and office equipment. Injection molding machines, also known as injection molding machines or injection presses, are key equipment in the plastics processing field. They use the thrust of a screw or plunger to inject molten plastic into a closed mold cavity, where it cools and solidifies to obtain the finished product. The working process of an injection molding machine is a cyclical process, mainly including steps such as metered feeding, melting and plasticizing, pressure injection, mold filling and cooling, and mold opening and part removal.

[0003] A search revealed a Chinese utility model patent with patent number CN214820270U, ​​which discloses an injection molding machine for processing modified plastics. Compared with the prior art, this utility model patent with Chinese patent number CN214820270U achieves the following: after the injection mold is formed, the cylinder is started, which drives the outer mold to move. The ejector rod pushes the injection molded part out of the molding groove to achieve the demolding operation. Then, the injection molded part at the top is discharged through the discharge groove to complete the injection molding operation.

[0004] In the above process, plastic granules are directly fed into the injection molding machine. However, during the transfer of the plastic granules into the machine, as a chemical raw material, the granules have the ability to absorb moisture on their surface and inside. During storage or transfer, the plastic granules are exposed to air and absorb water vapor, leading to an increase in moisture content. This moisture will generate water vapor during the melting process, causing defects such as bubbles and holes inside the plastic product, affecting the quality and strength of the product. If this water vapor cannot be discharged in time while in the molten state, it may also cause poor plastic flow during injection molding, affecting the product's molding yield. Therefore, to solve the above problems, an injection molding machine for processing modified engineering plastics is proposed. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing injection molding technologies where product quality issues arise due to air bubbles in the molten plastic, and to propose an injection molding machine for processing modified engineering plastics.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an injection molding machine for processing modified engineering plastics, comprising: an injection molding machine body, wherein the injection molding machine body is used for injection molds of modified plastics, and the injection molding machine body comprises: a base plate, a movable male plate, a fixed female plate, and a rotating spiral feed roller;

[0007] An air venting assembly is used to remove air from molten modified plastic during injection molding. The air venting assembly includes: an air vent pipe, an up-and-down movable air vent head, and a spring.

[0008] A drying assembly for drying modified plastic granules, the drying assembly comprising: a fixed heating wire, a rotatable separating fan blade, and a spiral anti-clogging roller.

[0009] The above technical solution further includes:

[0010] The main body of the injection molding machine further includes: a mounting plate fixedly connected to the top of the base plate, a first driving component mounted on the mounting plate, a demolding push plate slidably disposed on the side of the mounting plate away from the first driving component, a male plate fixedly connected to the driving end of the first driving component, the male plate sliding relative to the mounting plate, and the demolding push plate sliding relative to the male plate.

[0011] The injection molding machine body also includes: a collection box fixedly connected to the bottom of the injection molding machine body, a mother plate installed on the base plate, a male plate and a mother plate cooperating with each other, a feeding box fixedly connected to the top of the base plate, a feeding cylinder fixedly connected between the feeding box and the mother plate, multiple heating blocks installed on the outside of the feeding cylinder, and a second driving component installed on the side of the feeding box away from the feeding cylinder, the driving end of the second driving component being fixedly connected to a spiral feeding roller rotating inside the feeding cylinder.

[0012] The exhaust assembly is installed on the feed cylinder. The exhaust assembly also includes: multiple connecting pipes fixedly connected to the outside of the feed cylinder, the multiple connecting pipes being fixedly connected to the collecting cylinder, and an exhaust pipe fixedly connected to the outside of the collecting cylinder.

[0013] The exhaust assembly further includes: the exhaust head is slidably disposed inside the exhaust pipe, the exhaust head slides relative to the exhaust ring fixedly connected inside the exhaust pipe, and the end of the exhaust head is provided with a misalignment groove.

[0014] The exhaust assembly further includes: a gasket fixedly connected to the end of the exhaust head and a limiting ring fixedly connected to the inside of the exhaust pipe, which slide relative to each other; the gasket and the exhaust ring are fixedly connected to a spring disposed outside the exhaust head.

[0015] The drying assembly is installed on the feeding box. The drying assembly also includes: a feeding cylinder fixedly connected to the feeding box; a threaded heating wire fixedly connected to the outside of the feeding cylinder; a heat insulation layer installed on the outside of the heating wire; a sieve cylinder fixedly connected to the inside of the feeding cylinder; and the sieve cylinder and the feeding cylinder being rotatably connected to the drive shaft.

[0016] The drying assembly further includes: a drive motor installed on the outside of the heat insulation layer; a drive flywheel fixedly connected to the output end of the drive motor; two separating fan blades fixedly connected to the drive shaft; a spiral anti-clogging roller fixedly connected to the drive shaft; a driven flywheel fixedly connected to the end of the drive shaft away from the spiral anti-clogging roller; and a belt connecting the drive flywheel and the driven flywheel together.

[0017] This utility model has the following beneficial effects:

[0018] 1. In this invention, if water vapor is not discharged in time during the plastic processing, it will form bubbles or minor defects inside the plastic. By automatically discharging excess water vapor through the exhaust assembly, the formation of bubbles can be effectively reduced, making the product surface smoother and flawless, and improving the overall quality of the product.

[0019] 2. In this utility model, the drying component removes moisture from the plastic raw material by heating, reducing the moisture content of the raw material to an extremely low level, so that the raw material reaches the ideal dry state before processing, reducing production interruptions and failures caused by moisture, improving the continuity and stability of the production line, ensuring that the plastic is uniform and stable in the molten state, thereby producing flawless plastic products. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of an injection molding machine for processing modified engineering plastics, as proposed in this utility model.

[0021] Figure 2 This is a schematic diagram of the main structure of the injection molding machine according to this utility model;

[0022] Figure 3 for Figure 1 Enlarged schematic diagram of the structure at point A in the middle;

[0023] Figure 4 for Figure 2 Enlarged schematic diagram of the structure at point B;

[0024] Figure 5 for Figure 2 Enlarged schematic diagram of the structure at point C;

[0025] Figure 6 for Figure 4 Enlarged schematic diagram of the structure at point D.

[0026] In the diagram: 1. Injection molding machine body; 10. Collection box; 11. First drive component; 12. Second drive component; 13. Feeding box; 14. Male plate; 15. Female plate; 16. Mounting plate; 18. Demolding push plate; 110. Heating block; 111. Base plate; 112. Feeding cylinder; 113. Spiral feed roller; 2. Exhaust assembly; 21. Connecting pipe; 22. Collection cylinder; 23. Exhaust pipe; 24. Exhaust head; 25. Limiting ring; 26. Spring; 27. Gasket; 28. Exhaust ring; 29. ​​Misalignment groove; 3. Drying assembly; 30. Drive motor; 31. Heat insulation layer; 32. Spiral anti-blocking roller; 33. Feeding cylinder; 34. Heating wire; 35. Screen cylinder; 36. Separating fan blade; 38. Drive shaft; 39. Belt; 310. Driven flywheel; 311. Driven flywheel. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Example 1

[0029] like Figures 1-6 As shown, the present invention proposes an injection molding machine for processing modified engineering plastics, comprising: an injection molding machine body 1, an injection molding mold for modified plastics, the injection molding machine body 1 comprising: a base plate 111, a movable male plate 14, a fixed female plate 15, and a rotating spiral feed roller 113.

[0030] The venting assembly 2 is used to remove air from the molten modified plastic during the injection molding process. The venting assembly 2 includes: an vent pipe 23, an up-and-down movable vent head 24, and a spring 26.

[0031] Drying assembly 3 is used to dry modified plastic granules. Drying assembly 3 includes: a fixed heating wire 34, a rotatable separating fan blade 36, and a spiral anti-clogging roller 32.

[0032] During use, the base plate 111 serves as the basic support component of the entire injection molding machine, ensuring the stable installation and operation of all components. During injection molding, the male plate and the female plate (fixed female plate 15) cooperate to form the cavity of the injection mold. The male plate moves under the drive of the first drive component 11 to complete the closing and opening of the mold. Finally, the rotation of the spiral feed roller 113 generates a pushing force, causing the plastic particles to move forward along the inner wall of the barrel and enter the heating and plasticizing stage. Subsequently, the spiral feed roller 113 stops rotating, and the second drive component 12 pushes the spiral feed roller 113 to squeeze the molten plastic into the mold cavity. After pressure holding, cooling and solidification, the product is formed.

[0033] In the above process, the modified plastic granules are dried by the drying component before entering the injection molding machine to remove moisture and humidity from the granules, thereby improving the quality and stability of the injection molded products.

[0034] The venting assembly automatically opens and closes the venting channel according to the pressure changes in the mold cavity, so as to promptly remove air from the molten plastic and avoid defects such as bubbles in the product.

[0035] The main body 1 of the injection molding machine also includes: a mounting plate 16 fixedly connected to the top of the base plate 111, a first driving member 11 mounted on the mounting plate 16, a demolding push plate 18 slidably disposed on the side of the mounting plate 16 away from the first driving member 11, a male plate 14 fixedly connected to the driving end of the first driving member 11, the male plate 14 and the mounting plate 16 sliding relative to each other, and the demolding push plate 18 and the male plate 14 sliding relative to each other.

[0036] Mounting plate 16 is fixedly connected to the top of base plate 111, providing an installation position for first drive component 11. Mounting plate 16 has multiple sliding pillars that serve as sliding tracks for demolding ejector plate 18, and these pillars are fixedly connected to male plate 14. First drive component 11 is a hydraulic cylinder used to drive male plate 14 to move. During injection molding, first drive component 11 moves male plate 14 closer to female plate 15, completing mold closure; after injection molding, it moves male plate 14 away from female plate 15, opening the mold. Demolding ejector plate 18 has multiple push rods fixed on it, which slide relative to male plate 14. A return spring is provided between male plate 14 and demolding ejector plate 18. During demolding, demolding ejector plate 18 slides relative to male plate 14, and multiple push rods push the product out of the mold, which is then reset by the return spring.

[0037] The main body 1 of the injection molding machine also includes: a collection box 10 fixedly connected to the bottom of the injection molding machine body 1; a mother plate 15 installed on the base plate 111; a male plate 14 and a mother plate 15 cooperating with each other; a feeding box 13 fixedly connected to the top of the base plate 111; a feeding cylinder 112 fixedly connected between the feeding box 13 and the mother plate 15; multiple heating blocks 110 installed on the outside of the feeding cylinder 112; a second driving member 12 installed on the side of the feeding box 13 away from the feeding cylinder 112; and the driving end of the second driving member 12 fixedly connected to the spiral feeding roller 113 rotatably arranged inside the feeding cylinder 112.

[0038] The collection box 10 is located at the bottom of the injection molding machine body 1. After the injection molding process is completed, the finished product is ejected from the mold. The collection box 10 is used to receive and temporarily store these finished products. During the injection molding process, plastic granule raw materials are put into the feeding box 13 and the second driving component 12 is driven to drive the spiral feeding roller 113 in the feeding cylinder 112 to rotate. The driving end of the second driving component 12 is fixedly connected to the spiral feeding roller 113. By rotating the spiral feeding roller 113, the plastic granules are pushed into the feeding cylinder 112 and finally into the mold cavity. At the same time, when the rotating spiral feeding roller 113 stops rotating, the second driving component 12 can drive the spiral feeding roller 113 to squeeze the molten plastic into the mold cavity.

[0039] The drying assembly 3 is installed on the feeding box 13. The drying assembly 3 also includes: a feeding cylinder 33 is fixedly connected to the feeding box 13, a threaded heating wire 34 is fixedly connected to the outside of the feeding cylinder 33, a heat insulation layer 31 is installed on the outside of the heating wire 34, and a screen cylinder 35 is fixedly connected to the inside of the feeding cylinder 33. The screen cylinder 35 and the feeding cylinder 33 are rotatably connected to the drive shaft 38.

[0040] The drying assembly 3 also includes: a drive motor 30 installed on the outside of the heat insulation layer 31; a drive flywheel 310 fixedly connected to the output end of the drive motor 30; two separate fan blades 36 fixedly connected to the drive shaft 38; a spiral anti-blocking roller 32 fixedly connected to the drive shaft 38; a driven flywheel 311 fixedly connected to the end of the drive shaft 38 away from the spiral anti-blocking roller 32; and a belt 39 connected between the drive flywheel 310 and the driven flywheel 311.

[0041] In this embodiment, plastic granules enter the feed cylinder 33 of the drying assembly 3 through the feeding box 13. The feed cylinder 33 serves as a channel for the plastic granules to enter the drying assembly, ensuring that the plastic granules can smoothly enter the subsequent drying process. A threaded heating wire 34 is fixedly connected to the outside of the feed cylinder 33. When the heating wire 34 is energized, it generates heat, which is transferred to the plastic granules inside through the wall of the feed cylinder 33. A heat insulation layer 31 is installed on the outside of the heating wire 34 to reduce heat loss and improve heating efficiency. At the same time, the heat insulation layer 31 also protects the heating wire 34 from the influence of the external environment and extends its service life. Under the heating action of the heating wire 34, the moisture in the plastic granules begins to evaporate. The output end of the drive motor 30 is fixedly connected to the active flywheel 310. The active flywheel 310 is connected to the driven flywheel 311 through the belt 39 to form a belt drive system.

[0042] Two separating fan blades 36 are fixedly connected to the drive shaft 38. When the drive shaft 38 rotates, the separating fan blades 36 also rotate, generating airflow, which helps to accelerate the evaporation of moisture in the plastic granules and promotes heat exchange during the drying process. Simultaneously, as the two separating fan blades 36 rotate within the screen cylinder 35, they break up accumulated plastic granules and throw them out through the openings in the screen cylinder 35, further increasing the contact area between the plastic granules and the air, ensuring that the plastic granules entering the injection molding machine are dry. A spiral anti-clogging roller 32 is fixedly connected to the drive shaft 38. When rotating, the spiral anti-clogging roller 32 pushes the plastic granules forward within the feed cylinder 33 and prevents the plastic granules from passing smoothly due to clumping or blockage.

[0043] Example 2

[0044] like Figures 1-6 As shown, based on Embodiment 1, the exhaust assembly 2 is installed on the feed cylinder 112. The exhaust assembly 2 also includes: multiple connecting pipes 21 are fixedly connected to the outside of the feed cylinder 112, the multiple connecting pipes 21 are fixedly connected to the collection cylinder 22, and an exhaust pipe 23 is fixedly connected to the outside of the collection cylinder 22.

[0045] The exhaust assembly 2 also includes: an exhaust head 24 slidably disposed inside the exhaust pipe 23, the exhaust head 24 sliding relative to the exhaust ring 28 fixedly connected inside the exhaust pipe 23, and an offset groove 29 provided at the end of the exhaust head 24;

[0046] The exhaust assembly 2 also includes: a gasket 27 fixedly connected to the end of the exhaust head 24 and a limiting ring 25 fixedly connected to the inner side of the exhaust pipe 23, which slide relative to each other; the gasket 27 and the exhaust ring 28 are fixedly connected to the spring 26 provided outside the exhaust head 24.

[0047] In this embodiment, the exhaust assembly 2 is installed on the feed cylinder 112 and is fixedly connected to the collection cylinder 22 through multiple connecting pipes 21. The connecting pipes 21 are channels for gas to enter the collection cylinder 22 from the feed cylinder 112.

[0048] An exhaust pipe 23 is fixedly connected to the outside of the collection cylinder 22. The exhaust pipe 23 serves as the final channel for gas discharge, guiding the gas inside the collection cylinder 22 to the external environment. When there is too much gas in the feeding cylinder 112, the gas pushes against the gasket 27 and moves upward. At the same time, the spring 26 contracts, generating elastic force. As the gasket 27 moves upward, it drives the exhaust head 24 to move. At this time, there is a gap between the inclined opening at the bottom of the exhaust head 24 and 28, and the gas is discharged through this gap. Subsequently, during the upward movement of the exhaust head 24, the misalignment groove 29 provided on the exhaust head 24 is misaligned with the port of the exhaust pipe 23, and the gas is discharged.

[0049] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An injection molding machine for modified engineering plastic processing, characterized by, Include: Injection molding machine body (1) for modified plastics injection mold, the injection molding machine body (1) includes: bottom plate (111), movable male plate (14), fixedly arranged female plate (15), rotationally arranged screw feeder roller (113); Exhaust assembly (2) for removing air in the molten modified plastic during the injection molding process, the exhaust assembly (2) includes: exhaust pipe (23), up and down moving exhaust head (24), spring (26);Drying assembly (3) for drying modified plastic particles, the drying assembly (3) includes: fixedly arranged heating wire (34), rotatable separation fan blade (36) and spiral anti-blocking roller (32), the exhaust assembly (2) and the drying assembly (3) are arranged on the injection molding machine body (1).

2. The injection molding machine for processing modified engineering plastics according to claim 1, characterized in that, The injection molding machine body (1) further includes: the top of the bottom plate (111) is fixedly connected with a mounting plate (16), the first driving member (11) is installed on the mounting plate (16), the de-mold push plate (18) is slidably arranged on the side of the mounting plate (16) away from the first driving member (11), the male plate (14) is fixedly connected between the driving end of the first driving member (11), the male plate (14) and the mounting plate (16) slide relative to each other, and the de-mold push plate (18) and the male plate (14) slide relative to each other.

3. An injection molding machine for processing modified engineering plastics according to claim 2, characterized in that The injection molding machine body (1) further includes: the bottom of the injection molding machine body (1) is fixedly connected with a collection box (10), the female plate (15) is installed on the bottom plate (111), the male plate (14) and the female plate (15) cooperate with each other, the top of the bottom plate (111) is fixedly connected with a feeding box (13), the feeding box (13) and the female plate (15) are fixedly connected with a feeding cylinder (112), a plurality of heating blocks (110) are installed on the outer side of the feeding cylinder (112), the second driving member (12) is installed on the side of the feeding box (13) away from the feeding cylinder (112), and the driving end of the second driving member (12) is fixedly connected with the screw feeder roller (113) rotationally arranged in the feeding cylinder (112).

4. The injection molding machine for processing modified engineering plastics according to claim 3, characterized in that, The exhaust assembly (2) is installed on the feeding cylinder (112), and the exhaust assembly (2) further includes: a plurality of connecting pipes (21) are fixedly connected to the outer side of the feeding cylinder (112), a plurality of the connecting pipes (21) are fixedly connected with a collection cylinder (22), and the outer side of the collection cylinder (22) is fixedly connected with an exhaust pipe (23).

5. An injection molding machine for processing modified engineering plastics according to claim 4, characterized in that The exhaust assembly (2) further includes: the exhaust head (24) is slidably arranged in the inner side of the exhaust pipe (23), the exhaust head (24) and the exhaust ring (28) fixedly connected in the exhaust pipe (23) slide relative to each other, and the end of the exhaust head (24) is provided with a staggered groove (29).

6. The injection molding machine for processing modified engineering plastics according to claim 4, wherein The exhaust assembly (2) further comprises: the gasket (27) fixedly connected at the end of the exhaust head (24) and the limiting ring (25) fixedly connected inside the exhaust pipe (23) relatively slide, the gasket (27) and the exhaust ring (28) are fixedly connected with the spring (26) arranged outside the exhaust head (24) together.

7. The injection molding machine for processing modified engineering plastics of claim 1, wherein The drying assembly (3) is installed on the feeding box (13), and the drying assembly (3) further comprises: the feeding box (13) is fixedly connected with the feeding cylinder (33), the outer side of the feeding cylinder (33) is fixedly connected with the heating wire (34) of the screw type, the outer side of the heating wire (34) is provided with the heat insulation layer (31), and the inner side of the feeding cylinder (33) is fixedly connected with the sieve cylinder (35); the sieve cylinder (35) and the feeding cylinder (33) are rotatably connected with the transmission shaft (38) together.

8. An injection molding machine for processing modified engineering plastics according to claim 7, characterized in that The drying assembly (3) further comprises: the outer side of the heat insulation layer (31) is provided with the driving motor (30), the output end of the driving motor (30) is fixedly connected with the driving flywheel (310), the two separation fan blades (36) are fixedly connected with the transmission shaft (38), the spiral anti-blocking roller (32) is fixedly connected with the transmission shaft (38), one end of the transmission shaft (38) away from the spiral anti-blocking roller (32) is fixedly connected with the driven flywheel (311), and the driving flywheel (310) and the driven flywheel (311) are jointly sleeved with the belt (39).

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