Mold injection molding sprue cut-off mechanism

Abstract

The utility model discloses a cut-off mechanism for an injection molding sprue of a mold, and relates to the technical field of mold processing. The mold injection molding sprue cutting mechanism comprises a bottom plate, a cutting assembly and a cleaning assembly, a moving plate is arranged at the top of the bottom plate, the cutting assembly is arranged on the moving plate, the cleaning assembly comprises a threaded rod, a threaded block, a cleaning brush and a connecting plate, the threaded block is installed on the threaded rod in a threaded mode, and the connecting plate is fixedly installed on one side of the threaded block. And a cleaning brush is fixedly mounted on one side of the connecting plate. Through the arrangement of the cleaning assembly, the cleaning brush can remove residues and impurities on the cut-off knife, and it is ensured that the knife keeps good cutting effect and precision, so that the sprue cut-off quality is improved, it is helpful to ensure that the cutting effect of each product is consistent, the overall quality of an injection molding part is improved, meanwhile, the service life of the knife can be prolonged, and the production cost is reduced. The frequency of replacing the cutter is reduced, so that the production cost is saved, and the cut-off process can be smoothly carried out by keeping the cut-off cutter clean.

Description

Technical Field

[0001] This utility model relates to the field of mold processing technology, and in particular to a mold injection gate cutting-off mechanism. Background Technology

[0002] Chinese patent document CN214872410U discloses an automotive part injection mold with a gate cutting mechanism, belonging to the field of automotive part injection molds. It includes a bottom mold with an injection groove at its upper end. An extrusion rod is movably connected to the bottom mold, extending to a sealing plate within the injection groove. Multiple limiting tubes are fixedly installed at the upper end of the bottom mold, with lubrication pipes fixedly connected to the side walls of each tube. A pneumatic pump and an ultrasonic transducer are fixedly installed at the upper end of the bottom mold. A telescopic rod is fixedly installed at the output end of the pneumatic pump, and a connecting pipe is fixedly installed at the output end of the ultrasonic transducer. An ultrasonic cutting blade is fixedly connected to the end of the connecting pipe furthest from the ultrasonic transducer. This facilitates the spraying of lubricant into the injection groove, thereby facilitating the demolding of the injection-molded automotive part. It also facilitates the cutting of the injection material during injection, preventing material from adhering to the injection-molded automotive part. Furthermore, the device has a simple structure and is easy to use.

[0003] After investigation and analysis, the patent has the following drawbacks in actual use:

[0004] During use, the cutting blade may retain some injection molding material due to friction during the cutting process. When too much plastic residue or impurities accumulate on the cutting blade, it may cause accelerated wear of the blade, making it easy for the next cut to be incomplete or leave burrs.

[0005] In summary, this application proposes a mold injection gate cutting-off mechanism to solve the aforementioned problems. Utility Model Content

[0006] The purpose of this utility model is to provide a mold injection gate cutting mechanism that can solve the problem that when too much plastic residue or impurities accumulate on the cutting blade, it may lead to accelerated wear of the blade, which may result in incomplete cutting or residual burrs in the next cutting.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a mold injection gate cutting-off mechanism, comprising:

[0008] The base plate has a movable plate on top.

[0009] The cutting assembly is mounted on a movable plate. The cutting assembly includes a hydraulic rod 2, a slide groove and a cutting blade. The free end of the hydraulic rod 2 is fixedly installed with the slide groove, and the bottom of the slide groove is fixedly installed with the cutting blade.

[0010] The cleaning assembly is mounted on a movable plate and includes a threaded rod, a threaded block, a cleaning brush, and a connecting plate. The threaded block is threaded onto the threaded rod, the connecting plate is fixedly mounted on one side of the threaded block, and the cleaning brush is fixedly mounted on one side of the connecting plate.

[0011] Preferably, a top plate is provided on the top of the base plate, and a column is fixedly installed between the base plate and the top plate.

[0012] Preferably, a hydraulic rod is fixedly installed on the top of the top plate, and the free end of the hydraulic rod passes through the top plate and is fixedly installed on the top of the movable plate. The movable plate is slidably sleeved on the column.

[0013] Preferably, an upper mold is fixedly installed at the bottom of the movable plate, and a lower mold is fixedly installed at the top of the base plate. The top of the upper mold is provided with a sprue to facilitate the injection of molten plastic.

[0014] Preferably, the cutting assembly further includes a sliding block, and a groove is provided on the top of the moving plate. The sliding block is slidably installed inside the groove. The hydraulic rod can provide a stable and powerful cutting force, which can efficiently cut the injection gate, thereby quickly completing the cutting process and improving production efficiency.

[0015] Preferably, the cleaning assembly further includes a U-shaped plate and a motor. The U-shaped plate is fixedly installed at the bottom of the moving plate. Threaded rods are rotatably installed on the inner walls of the front and rear sides of the U-shaped plate. The motor is fixedly installed on the rear side of the bottom U-shaped plate of the cleaning brush. The rear end of the threaded rod passes through the U-shaped plate and is fixedly installed with the output shaft of the motor. The cleaning brush can remove residues and impurities from the cutter blade, ensuring that the blade maintains good cutting effect and precision, thereby improving the quality of gate cutting. This helps to ensure consistent cutting effect for each product, thus improving the overall quality of injection molded parts. At the same time, it can extend the service life of the blade, reduce the frequency of blade replacement, thereby saving production costs. Keeping the cutter blade clean ensures smooth cutting process, avoiding blade jamming or situations requiring manual handling, thereby improving the efficiency of automated production.

[0016] Preferably, the bottom of the cutting blade is flush with the top of the upper mold, and the cleaning brush is in contact with the cutting blade, so that the cleaning brush can clean the cutting blade.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] (1) The injection gate cutting mechanism of this mold, through the combined use of hydraulic rod 2, slide, sliding block and cutting blade, hydraulic rod 2 can provide stable and powerful cutting force, which can efficiently cut the injection gate, thereby quickly completing the cutting process and improving production efficiency.

[0019] (2) The injection gate cutting mechanism of this mold uses a combination of U-shaped plate, threaded rod, threaded block, cleaning brush, connecting plate and motor. The cleaning brush can remove residues and impurities on the cutting blade, ensuring that the blade maintains good cutting effect and precision, thereby improving the quality of gate cutting, helping to ensure that the cutting effect of each product is consistent, thereby improving the overall quality of injection molded parts. At the same time, it can extend the service life of the blade, reduce the frequency of blade replacement, thereby saving production costs. Keeping the cutting blade clean can ensure that the cutting process is smooth, avoiding blade jamming or the need for manual handling, thereby improving the efficiency of automated production. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0021] Figure 1 The three-dimensional representation of this utility model Figure 1 ;

[0022] Figure 2 The three-dimensional representation of this utility model Figure 2 ;

[0023] Figure 3 This is a partial perspective view of the present invention.

[0024] Reference numerals: 1. Base plate; 2. Top plate; 3. Column; 4. Moving plate; 5. Hydraulic rod one; 6. Upper mold; 7. Lower mold; 8. Sprue; 9. Hydraulic rod two; 10. Slide groove; 11. Sliding block; 12. Cutting blade; 13. U-shaped plate; 14. Threaded rod; 15. Threaded block; 16. Cleaning brush; 17. Connecting plate; 18. Motor. Detailed Implementation

[0025] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] Please see Figure 1-3This utility model provides a technical solution: a mold injection gate cutting mechanism, including a base plate 1, a cutting component and a cleaning component. A movable plate 4 is provided on the top of the base plate 1. The cutting component is provided on the movable plate 4. The cutting component includes a hydraulic rod 9, a slide 10 and a cutting blade 12. The slide 10 is fixedly installed at the free end of the hydraulic rod 9. The cutting blade 12 is fixedly installed at the bottom of the slide 10. The cleaning component is provided on the movable plate 4. The cleaning component includes a threaded rod 14, a threaded block 15, a cleaning brush 16 and a connecting plate 17. The threaded block 15 is threaded on the threaded rod 14. The connecting plate 17 is fixedly installed on one side of the threaded block 15. The cleaning brush 16 is fixedly installed on one side of the connecting plate 17.

[0027] Furthermore, a top plate 2 is provided on the top of the base plate 1, and a column 3 is fixedly installed between the base plate 1 and the top plate 2.

[0028] Furthermore, a hydraulic rod 5 is fixedly installed on the top of the top plate 2. The free end of the hydraulic rod 5 passes through the top plate 2 and is fixedly installed on the top of the movable plate 4. The movable plate 4 is slidably sleeved on the column 3.

[0029] Furthermore, an upper mold 6 is fixedly installed at the bottom of the movable plate 4, and a lower mold 7 is fixedly installed at the top of the base plate 1. A sprue 8 is provided at the top of the upper mold 6 to facilitate the injection of molten plastic.

[0030] Furthermore, the cutting assembly also includes a sliding block 11. The top of the moving plate 4 has a groove 10, and the sliding block 11 is slidably installed inside the groove 10. By controlling the contraction of the hydraulic rod 2 9, the sliding block 11 is driven to slide inside the groove 10, thereby driving the cutting blade 12 to move upward to the mold 6, so that the cutting blade 12 cuts the plastic at the injection gate. The hydraulic rod 2 9 can provide a stable and powerful cutting force, which can efficiently cut the injection gate, thereby quickly completing the cutting process and improving production efficiency.

[0031] Secondly, the cleaning assembly also includes a U-shaped plate 13 and a motor 18. The U-shaped plate 13 is fixedly installed at the bottom of the movable plate 4. Threaded rods 14 are rotatably installed on the inner walls of the front and rear sides of the U-shaped plate 13. The motor 18 is fixedly installed on the rear side of the bottom of the cleaning brush 16. The rear end of the threaded rod 14 passes through the U-shaped plate 13 and is fixedly installed with the output shaft of the motor 18. The motor 18 drives the threaded rod 14 to rotate, thereby causing the threaded block 15 to move. This causes the connecting plate 17 on the threaded block 15 to drive the cleaning brush 16 to move and brush the cutting blade 12. The cleaning brush 16 removes residues and impurities from the cutter 12, ensuring good cutting performance and precision, thus improving the quality of gate cutting. This helps ensure consistent cutting results for each product, improving the overall quality of injection molded parts. It also extends the tool's lifespan, reduces the frequency of tool replacement, and saves production costs. Keeping the cutter 12 clean ensures a smooth cutting process, preventing tool jamming or requiring manual intervention, thereby improving the efficiency of automated production.

[0032] Secondly, the bottom of the cutting blade 12 is flush with the top of the upper mold 6, and the cleaning brush 16 is in contact with the cutting blade 12, so that the cleaning brush 16 can clean the cutting blade 12.

[0033] Working principle: In use, hydraulic rod 5 is activated, which drives the moving plate 4 to move, causing the moving plate 4 to move the upper mold 6 downward, thereby closing the upper mold 6 and the lower mold 7. Molten plastic is then injected into the upper mold 6 and the lower mold 7 through the injection gate 8. Next, hydraulic rod 9 is activated, and by controlling the contraction of hydraulic rod 9, the sliding block 11 slides inside the slide groove 10, thereby moving the cutting blade 12 to the upper mold 6. The cutting blade 12 cuts the plastic at the injection port, and the cutting blade 12 moves back to its original position via hydraulic rod 9. Motor 18 is then activated, which drives the threaded rod 14 to rotate. The rotation of the threaded rod 14 causes the threaded block 15 to move, and the connecting plate 17 on the threaded block 15 drives the cleaning brush 16 to move and brush the cutting blade 12, cleaning away any residue on the cutting blade 12.

[0034] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A mold injection gate cutting-off mechanism, characterized in that, include: The base plate (1) has a movable plate (4) on its top. The cutting assembly is mounted on the movable plate (4). The cutting assembly includes a hydraulic rod (9), a slide (10), and a cutting blade (12). The free end of the hydraulic rod (9) is fixedly mounted with the slide (10), and the bottom of the slide (10) is fixedly mounted with the cutting blade (12). The cleaning assembly is mounted on the movable plate (4). The cleaning assembly includes a threaded rod (14), a threaded block (15), a cleaning brush (16), and a connecting plate (17). The threaded rod (14) is threaded with the threaded block (15). The connecting plate (17) is fixedly mounted on one side of the threaded block (15). The cleaning brush (16) is fixedly mounted on one side of the connecting plate (17).

2. The mold injection gate cutting mechanism according to claim 1, characterized in that: A top plate (2) is provided on the top of the base plate (1), and a column (3) is fixedly installed between the base plate (1) and the top plate (2).

3. The mold injection gate cutting-off mechanism according to claim 2, characterized in that: A hydraulic rod (5) is fixedly installed on the top of the top plate (2). The free end of the hydraulic rod (5) passes through the top plate (2) and is fixedly installed on the top of the movable plate (4). The movable plate (4) is slidably mounted on the column (3).

4. The mold injection gate cutting-off mechanism according to claim 3, characterized in that: The bottom of the movable plate (4) is fixedly installed with an upper mold (6), the top of the base plate (1) is fixedly installed with a lower mold (7), and the top of the upper mold (6) is provided with a sprue (8).

5. The mold injection gate cutting-off mechanism according to claim 4, characterized in that: The cutting assembly also includes a sliding block (11), and a groove (10) is provided on the top of the moving plate (4). The sliding block (11) is slidably installed inside the groove (10).

6. The mold injection gate cutting-off mechanism according to claim 5, characterized in that: The cleaning assembly also includes a U-shaped plate (13) and a motor (18). The U-shaped plate (13) is fixedly installed at the bottom of the movable plate (4). A threaded rod (14) is rotatably installed on the inner walls of the front and rear sides of the U-shaped plate (13). The motor (18) is fixedly installed on the rear side of the bottom U-shaped plate (13) of the cleaning brush (16). The rear end of the threaded rod (14) passes through the U-shaped plate (13) and is fixedly installed with the output shaft of the motor (18).

7. The mold injection gate cutting-off mechanism according to claim 6, characterized in that: The bottom of the cutting blade (12) is flush with the top of the upper mold (6), and the cleaning brush (16) is in contact with the cutting blade (12).

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