Single-cylinder injection table of injection molding machine

Abstract

The utility model provides an injection molding machine single-cylinder injection table which comprises a screw sleeve, a charging barrel, a connecting seat and a motor, the input end of the screw sleeve is communicated with one end of the connecting seat, the bottom of the charging barrel is communicated with the upper end of the connecting seat, a screw is arranged in the screw sleeve, and the screw penetrates through the connecting seat and is installed with the output end of the motor in a driving mode. The output end of the screw sleeve is movably connected with a nozzle sleeve, an impurity filter screen is movably connected in the nozzle sleeve in the circumferential direction, the impurity filter screen is of a disc-shaped structure, the outer side of the impurity filter screen abuts against the inner wall of the screw sleeve, the middle of the impurity filter screen is of a hollow structure, the surface of the screw is sleeved with the impurity filter screen, and the output end of the screw penetrates through the screw sleeve to extend into the nozzle sleeve. According to the utility model, the impurity filter screen is arranged and is used for filtering solid particles of melt plastic in the screw sleeve, and the impurity filter screen is taken down by detaching one side of the nozzle sleeve and one side of the screw sleeve, taking down the nozzle sleeve and detaching the impurity filter screen from the inside of the nozzle sleeve, so that filtered solid impurities are conveniently cleaned.

Description

Technical Field

[0001] This utility model relates to the field of injection molding machine technology, and in particular to a single-cylinder injection unit for injection molding machines. Background Technology

[0002] Injection molding machines are the main molding equipment used to produce various shapes of plastic products from thermoplastic or thermosetting plastics using plastic molds. They heat the plastic material, melt it, and inject it into the mold cavity under high pressure to form the desired plastic product. After the thermoplastic material becomes molten, it is located inside the barrel and screw sleeve. When the plastic is not completely melted or contains solid impurities, solid particles will be present in the molten plastic. Injecting these particles into the mold will reduce the quality of the product. Therefore, it is necessary to design a single-cylinder injection station for injection molding machines that can block solid particles. Utility Model Content

[0003] The problem this invention aims to solve is that fixed particles in molten plastic are injected into the mold, reducing product quality.

[0004] To solve the above-mentioned technical problems, this utility model provides a single-cylinder injection unit for an injection molding machine, including a screw sleeve, a barrel, a connecting seat, and a motor. The input end of the screw sleeve is connected to one end of the connecting seat, and the bottom of the barrel is connected to the upper end of the connecting seat. A screw is installed inside the screw sleeve, and the screw passes through the connecting seat and is driven and installed at the output end of the motor. A nozzle sleeve is movably connected to the output end of the screw sleeve. An impurity filter screen is circumferentially connected inside the nozzle sleeve. The impurity filter screen has a disc-shaped structure and its outer side abuts against the inner wall of the screw sleeve. The middle part of the impurity filter screen has a hollow structure and is sleeved on the surface of the screw. The output end of the screw passes through the screw sleeve to the inside of the nozzle sleeve. A nozzle hole is opened at the end of the nozzle sleeve away from the screw sleeve. A heating plate assembly is sleeved on the surface of the screw sleeve.

[0005] Preferably, the outer side of the impurity filter screen is provided with a plurality of fixing screws arranged in a circumferential array, and the inner wall of the nozzle sleeve is provided with a plurality of mounting blocks corresponding to the positions of the fixing screws, and the fixing screws are threadedly connected to the corresponding mounting blocks.

[0006] Preferably, the nozzle sleeve has a circular connecting portion extending outward at the end away from the nozzle hole, and the screw sleeve has a circular connecting groove at one end that is inserted into the connecting portion.

[0007] Preferably, the surface of the nozzle sleeve is provided with a plurality of fixing blocks arranged in a circumferential direction, and a fastening screw is rotatably connected to the fixing block. The surface of the screw sleeve is provided with a mounting part that is threadedly connected to the fastening screw at the position corresponding to the fixing block.

[0008] Preferably, a sealing ring is provided between the connecting part and the connecting groove.

[0009] Preferably, the number of heating components is multiple, and they are arrayed and sleeved on the surface of the screw sleeve.

[0010] Preferably, the heating assembly includes a fixed shell and a heating plate, with the heating plate sleeved on the surface of the screw sleeve and the fixed shell covering the outside of the heating plate.

[0011] Preferably, the surface array of the impurity filter screen has multiple filter holes.

[0012] Preferably, the impurity filter screen has a circular snap-fit ​​hole in the middle that abuts against the surface of the screw.

[0013] Preferably, the impurity filter screen is fitted onto the output end surface of the screw.

[0014] Compared with the prior art, this utility model provides a single-cylinder injection unit for an injection molding machine, which has the following beneficial effects:

[0015] 1. This utility model, by setting up an impurity filter screen, filters solid particles from the molten plastic inside the screw sleeve, thereby preventing solid particles from entering the mold. This allows incompletely molten plastic and solid impurities to be blocked on one side of the impurity filter screen. By disassembling one side of the nozzle sleeve and the screw sleeve, removing the nozzle sleeve, and then removing the impurity filter screen from inside the nozzle sleeve, the filtered solid impurities can be easily cleaned, thus solving the problem of fixed particles in the molten plastic being injected into the mold and reducing product quality. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0017] Figure 2 This is an exploded view of the connection structure between the material cylinder and the nozzle sleeve of this utility model;

[0018] Figure 3 This is a schematic diagram of the connection structure between the nozzle sleeve and the impurity filter screen of this utility model.

[0019] In the diagram: 1. Screw sleeve; 2. Barrel; 3. Connecting seat; 4. Motor; 5. Screw; 6. Nozzle sleeve; 7. Impurity filter screen; 8. Nozzle orifice; 9. Heating plate assembly; 91. Fixing shell; 92. Heating plate; 10. Fixing screw; 11. Mounting block; 12. Connecting part; 13. Connecting groove; 14. Fixing block; 15. Fastening screw; 16. Mounting part; 17. Sealing ring; 18. Filter hole; 19. Snap-fit ​​hole. Detailed Implementation

[0020] This utility model relates to a single-cylinder injection unit for an injection molding machine, such as... Figure 1-3As shown, the injection molding machine includes a screw sleeve 1, a barrel 2, a connecting seat 3, and a motor 4. The input end of the screw sleeve 1 is connected to one end of the connecting seat 3, and the bottom of the barrel 2 is connected to the upper end of the connecting seat 3. A screw 5 is installed inside the screw sleeve, and the screw 5 passes through the connecting seat 3 and is driven by the output end of the motor 4. A nozzle sleeve 6 is movably connected to the output end of the screw sleeve 1. An impurity filter screen 7 is movably connected circumferentially inside the nozzle sleeve 6. The impurity filter screen 7 has a disc-shaped structure and its outer side abuts against the inner wall of the screw sleeve 1. The middle part of the impurity filter screen 7 is a hollow structure and is sleeved on the surface of the screw 5. The output end of the screw 5 passes through the screw sleeve 1 to the inside of the nozzle sleeve 6. A nozzle hole 8 is opened at the end of the nozzle sleeve 6 away from the screw sleeve 1. A heating plate 92 assembly 9 is sleeved on the surface of the screw sleeve 1. The screw sleeve 1, barrel 2, connecting seat 3, and motor 4 constitute an injection molding machine unit. The injection unit receives plastic from the barrel 2, which then enters the connecting seat 3. The output of the motor 4 drives the screw 5 to rotate, and the screw 5 moves the plastic towards the output of the screw sleeve 1. The heating component heats the screw sleeve 1, making the plastic inside the screw sleeve 1 molten. An impurity filter screen 7 filters solid particles from the molten plastic inside the screw sleeve 1, preventing solid particles from entering the mold. Incompletely molten plastic and solid impurities are blocked on one side of the impurity filter screen 7. By disassembling the nozzle sleeve 6 and one side of the screw sleeve 1, removing the nozzle sleeve 6, and removing the impurity filter screen 7 from inside the nozzle sleeve 6, the filtered solid impurities can be easily cleaned. This solves the problem of fixed particles in the molten plastic being injected into the mold and reducing product quality.

[0021] In an embodiment of this utility model, multiple fixing screws 10 are arranged in a circumferential array on the outer side of the impurity filter screen 7, and multiple mounting blocks 11 are arranged on the inner wall of the nozzle sleeve 6 corresponding to the positions of the fixing screws 10. The fixing screws 10 are threadedly connected to the corresponding mounting blocks 11. By setting the fixing screws 10 and the mounting blocks 11 and threading them together, the impurity filter screen 7 is fixed in the circumferential direction inside the screw sleeve 1.

[0022] In an embodiment of this utility model, a circular connecting part 12 extending outward is provided at the end of the nozzle sleeve 6 away from the nozzle hole 8, and a circular connecting groove 13 is provided at one end of the screw sleeve 1 to be inserted into the connecting part 12. By providing the connecting part 12 and the connecting groove 13, the connecting part 12 and the connecting groove 13 are inserted to form a multi-layer sealing structure, thereby improving the sealing effect of the nozzle sleeve 6 and the nozzle hole 8.

[0023] In an embodiment of this utility model, a plurality of fixing blocks 14 are arranged in a circumferential array on the surface of the nozzle sleeve 6. A fastening screw 15 is rotatably connected to the fixing block 14. A mounting part 16 is provided on the surface of the screw sleeve 1 at the position corresponding to the fixing block 14, and is threadedly connected to the fastening screw 15. By setting the fixing block 14, the fastening screw 15 and the mounting part 16, and by the fastening screw 15 passing through the fixing block 14 and being threadedly connected to the mounting part 16, the stability of the connection between the nozzle sleeve 6 and the screw sleeve 1 is improved.

[0024] In an embodiment of this utility model, a sealing ring 17 is provided between the connecting part 12 and the connecting groove 13. By providing the sealing ring 17, the sealing effect between the connecting part 12 and the connecting groove 13 is improved.

[0025] In this embodiment of the invention, there are multiple heating components, which are arrayed and sleeved on the surface of the screw sleeve 1. By setting the above structure, the overall heating effect inside the screw sleeve 1 is more uniform.

[0026] In an embodiment of this utility model, the heating assembly includes a fixed shell 91 and a heating plate 92. The heating plate 92 is sleeved on the surface of the screw sleeve 1, and the fixed shell 91 covers the outside of the heating plate 92. By setting the fixed shell 91 and the heating plate 92, the heating plate 92 is covered on the surface of the screw sleeve 1 by the fixed shell 91, so that the heating plate 92 is fixed on the surface of the screw sleeve 1.

[0027] In an embodiment of this utility model, the surface of the impurity filter screen 7 is arrayed with multiple filter holes 18. By setting the filter holes 18, the aperture of the filter holes 18 is smaller than the size of the plastic, so that solid impurities in the molten plastic can be effectively filtered.

[0028] In this embodiment of the invention, a circular snap-fit ​​hole 19 is provided in the middle of the impurity filter screen 7 to abut against the surface of the screw 5. By providing the snap-fit ​​hole 19, the snap-fit ​​hole 19 abuts against the surface of the screw 5, thereby improving the stability of the impurity filter screen 7 on the screw 5 and improving the filtration effect of the impurity filter screen 7 on solid impurities.

[0029] In this embodiment of the invention, the impurity filter screen 7 is sleeved on the output end surface of the screw 5. By setting the above structure, the impurity filter screen 7 is located on the output end surface of the screw 5, thereby effectively filtering solid impurities inside the screw sleeve 1 and ensuring the normal rotation of the screw 5.

[0030] In use, first, plastic is added to the barrel 2 and then enters the connecting seat 3. The output end of the motor 4 drives the screw 5 to rotate. The screw 5 moves the plastic towards the output end of the screw sleeve 1. After the heating component is connected to an external power source, the temperature of the heating plate 92 rises. The heating component heats the screw sleeve 1, making the plastic inside the screw sleeve 1 molten. The rotation of the screw 5 moves the molten plastic towards the nozzle. The impurity filter screen 7 blocks the solid impurities in the molten plastic. The molten plastic is discharged into the mold through the nozzle. After stopping the machine, the fastening screw 15 is removed to separate the fixing block 14 from the mounting part 16. The nozzle sleeve 6 is pulled outward to separate the connecting part 12 from the connecting groove 13. The fixing screw 10 is removed to separate the impurity filter screen 7 from the mounting block 11. Then the impurity filter screen 7 is removed to easily clean the solid impurities blocked by the impurity filter screen 7.

[0031] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A single-cylinder injection unit for an injection molding machine, comprising a screw sleeve (1), a barrel (2), a connecting seat (3), and a motor (4), characterized in that, The input end of the screw sleeve (1) is connected to one end of the connecting seat (3), the bottom of the material cylinder (2) is connected to the upper end of the connecting seat (3), the screw sleeve (1) is provided with a screw (5), the screw (5) passes through the connecting seat (3) and is driven by the output end of the motor (4), the output end of the screw sleeve (1) is movably connected with a nozzle sleeve (6), the nozzle sleeve (6) is movably connected in the circumferential direction with an impurity filter screen (7), the impurity filter screen (7) is a disc-shaped structure and its outer side abuts against the inner wall of the screw sleeve (1), the middle part of the impurity filter screen (7) is a hollow structure and is sleeved on the surface of the screw (5), the output end of the screw (5) passes through the screw sleeve (1) to the inside of the nozzle sleeve (6), the nozzle sleeve (6) is provided with a nozzle hole (8) at the end away from the screw sleeve (1), and a heating plate assembly (9) is sleeved on the surface of the screw sleeve (1).

2. The single-cylinder injection unit for an injection molding machine according to claim 1, characterized in that: The outer side of the impurity filter screen (7) is provided with a plurality of fixing screws (10) arranged in a circumferential direction. The inner wall of the nozzle sleeve (6) is provided with a plurality of mounting blocks (11) corresponding to the positions of the fixing screws (10). The fixing screws (10) are threadedly connected to the corresponding mounting blocks (11).

3. The single-cylinder injection unit for an injection molding machine according to claim 1, characterized in that: The nozzle sleeve (6) has a circular connecting part (12) extending outward at one end away from the nozzle hole (8), and the screw sleeve (1) has a circular connecting groove (13) that is inserted into the connecting part (12) at one end.

4. The single-cylinder injection unit for an injection molding machine according to claim 1, characterized in that: The nozzle sleeve (6) has multiple fixing blocks (14) arranged in a circumferential direction on its surface. A fastening screw (15) is rotatably connected to the fixing block (14). The screw sleeve (1) has a mounting part (16) that is threadedly connected to the fastening screw (15) on its surface corresponding to the fixing block (14).

5. A single-cylinder injection unit for an injection molding machine according to claim 3, characterized in that: A sealing ring (17) is provided between the connecting part (12) and the connecting groove (13).

6. The single-cylinder injection unit for an injection molding machine according to claim 1, characterized in that: The number of heating plate assemblies (9) is multiple, and they are arrayed and sleeved on the surface of the screw sleeve (1).

7. A single-cylinder injection unit for an injection molding machine according to claim 1, characterized in that: The heating plate assembly (9) includes a fixed shell (91) and a heating plate (92). The heating plate (92) is sleeved on the surface of the screw sleeve (1), and the fixed shell (91) covers the outside of the heating plate (92).

8. A single-cylinder injection unit for an injection molding machine according to claim 1, characterized in that: The surface array of the impurity filter screen (7) has multiple filter holes (18).

9. A single-cylinder injection unit for an injection molding machine according to claim 1, characterized in that: The impurity filter screen (7) has a circular snap-fit ​​hole (19) in the middle that abuts against the surface of the screw (5).

10. A single-cylinder injection unit for an injection molding machine according to claim 1, characterized in that: The impurity filter screen (7) is fitted onto the output end surface of the screw (5).

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