Automatic shearing mechanism for sprue of injection mold

Abstract

According to the technical scheme, the automatic shearing mechanism is characterized by comprising a base, the top face of the base is connected with a containing table, and a plurality of containing grooves are formed in the containing table; the mounting plate is connected to the top surface of the base, a moving groove is formed in the mounting plate, and a shearing blade is arranged in the moving groove; the dust collection assembly is arranged in the moving groove and used for collecting dust, the dust collection assembly comprises a plurality of supporting blocks, the multiple supporting blocks are connected to the inner bottom face of the moving groove, a collecting groove is formed in the top face of each supporting block, dust collection holes are formed in the inner bottom face of each collecting groove, and a connecting cavity is formed in one side of the interior of the mounting plate. A collecting box is connected to the top face of the base, an exhaust pipe is connected to one side of the collecting box, one end of the exhaust pipe is connected to the interior of the connecting cavity, an exhaust fan is connected to one side of the collecting box, an operator moves downwards to be close to the product through the shearing blade, the root of the stub bar is cut off, and separation of the product and the stub bar is achieved.

Description

Technical Field

[0001] This invention relates to the field of injection mold gating technology, and more specifically to an automatic shearing mechanism for injection mold gates. Background Technology

[0002] Injection molds are tools used to produce plastic products, giving them a complete structure and precise dimensions. Injection molding is a processing method used for the mass production of certain complex-shaped parts. Specifically, it involves injecting molten plastic into a mold cavity under high pressure using an injection molding machine. After cooling and solidification, a molded product is obtained. After molding, the gate needs to be cut off. During the cutting process, the material has already cooled and hardened, increasing the workload of manual cutting. Furthermore, the gate surface after cutting is uneven, resulting in low product quality. Subsequent manual trimming is still required multiple times, leading to high labor costs. Therefore, an in-mold shearing mechanism for injection mold gates is particularly needed.

[0003] For example, Chinese patent CN218366288U discloses an in-mold shearing mechanism for injection mold gates. In use, the first step involves the material to be cut passing through the molding cavity. The second step utilizes the shearing mechanism's components: a slide rail, motor, shaft, gears, gear plates, and a sliding groove. The shaft and gears rotate under the motor's operation, and the gears mesh with the gear plates, causing them to move left and right. With the cooperation of the slide rail and sliding groove, the gear plates are securely fixed to the slide rail, improving cutting accuracy. The third step involves the arrangement of the tool holder, connecting rod, and cutting tool. The tool automatically shears and resets by moving the gear plate left and right, thus shearing before the material completely cools and hardens, resulting in a smooth gate surface after shearing, improving product quality, and reducing labor costs. This completes the use of an in-mold shearing mechanism for injection mold gates. However, in this solution, debris is generated during the shearing of the mold gate and remains on the shearing mechanism, requiring manual cleaning. At the same time, the debris also adheres to the tool, affecting the use of the tool and reducing cutting accuracy. Therefore, we propose an automatic shearing mechanism for injection mold gates. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides an automatic gate shearing mechanism for injection molds, which solves the problems mentioned in the background art.

[0005] The above-mentioned technical objective of the present invention is achieved through the following technical solution: An automatic gate shearing mechanism for injection molds includes: a base, a placement platform connected to the top surface of the base, and multiple placement slots formed inside the placement platform; a mounting plate connected to the top surface of the base, a moving slot formed inside the mounting plate, and a shearing blade disposed inside the moving slot; a dust collection assembly disposed inside the moving slot for dust collection, the dust collection assembly including multiple support blocks, each of which is connected to the bottom surface of the moving slot, a collection slot formed on the top surface of the support blocks, a dust collection hole formed on the bottom surface of the collection slot, a connecting cavity formed on one side of the mounting plate, a collection box connected to the top surface of the base, an exhaust pipe connected to one side of the collection box, one end of the exhaust pipe connected to the inside of the connecting cavity, and a fan connected to one side of the collection box.

[0006] By adopting the above technical solution and setting up a dust collection component, during use, the operator places the injection-molded product into the placement slot. The operator then moves the shearing blade downwards towards the product to cut off the root of the sprue, thus separating the product from the sprue. During the cutting process, the exhaust fan is activated to extract air from the connecting cavity, creating suction at the dust collection port to collect the debris generated during the cutting process. The dust and debris are collected into the collection box, achieving the purpose of dust removal and preventing debris from splashing into the work area or adhering to the shearing blade, thereby improving work efficiency.

[0007] Preferably, the vacuuming assembly further includes: a plurality of vacuum heads, each of which is connected to the inside side of the vacuuming hole; and a dust cover, which is connected to the inside side of the collection box.

[0008] By adopting the above technical solution and setting up a dust suction head, the suction power of the dust suction hole is more concentrated during use, which increases the stability of dust suction. The dust cover protects the exhaust fan and prevents debris from being sucked into the exhaust fan, thus affecting its normal use and improving its practicality.

[0009] Preferably, the top surface of the base is connected to two mounting blocks, the top surface of the mounting blocks is connected to a first motor, one end of the drive shaft of the first motor is connected to a first lead screw, the outer wall of the first lead screw is threaded with a fixing frame, and the bottom surface of the fixing frame is provided with multiple fixing grooves.

[0010] By adopting the above technical solution, and by setting up a first motor, the first motor drives the first lead screw to rotate during use. The rotation of the first lead screw drives the fixing frame to move vertically, causing the fixing frame to move downward and approach the product in the placement slot. The fixing slot fixes the product, preventing the product from shaking during the cutting process, which would affect the cutting accuracy and reduce the quality of the product.

[0011] Preferably, the top surface of the mounting plate has two pushing holes, and a hydraulic cylinder is connected inside the pushing holes. One end of the telescopic shaft of the hydraulic cylinder is connected to the top surface of the shearing blade.

[0012] By adopting the above technical solution and setting up a hydraulic cylinder, when shearing the gate, the operator starts the hydraulic cylinder, and pushes the shearing blade downward through the hydraulic cylinder's telescopic shaft, so that the shearing blade cuts the product, thereby improving work efficiency.

[0013] Preferably, the bottom surface of the placement platform is provided with a pushing groove, the inside of the pushing groove is connected to a movable plate, and the top surface of the movable plate is connected to multiple pushing blocks.

[0014] By adopting the above technical solution and setting up a push block, after the product head is cut off, the operator pushes the moving plate, which in turn moves the push block to push the product out of the placement slot, making it easier for the operator to collect the processed product and improving its practicality.

[0015] Preferably, a second motor is connected to one side of the placement platform, a second lead screw is rotatably connected inside the pusher groove, one end of the drive shaft of the second motor is connected to one end of the second lead screw, and the second lead screw is threadedly connected to the moving plate.

[0016] By adopting the above technical solution and setting a second motor, the second motor drives the shaft to rotate, which in turn drives the second lead screw to rotate. The rotation of the second lead screw can drive the moving plate to move horizontally, thus providing driving force for the movement of the moving plate.

[0017] Preferably, a discharge port is provided on one side of the collection box, and a sealing door is movably fitted inside the discharge port. An inclined plate 32 is connected to the top surface of the base 1, and multiple sliding grooves 33 are provided on the top surface of the inclined plate 32. A waste box 34 is connected to one side of the base 1, and a second electric push rod 35 is connected to one side of the inside of the waste box 34. One end of the telescopic shaft of the second electric push rod 35 is connected to a push plate 36.

[0018] By adopting the above technical solution and setting a discharge port, once the collection box has collected a certain amount of debris, the operator can remove the sealing door and clean the debris inside the collection box through the discharge port, thus improving its practicality.

[0019] Preferably, a first electric push rod is connected to one side of the collection box, the telescopic shaft of the first electric push rod extends into the interior of the collection box, and a scraper is connected to one end of the telescopic shaft of the first electric push rod.

[0020] By adopting the above technical solution and setting a first electric push rod, the scraper moves by the telescopic shaft of the first electric push rod during use, and the scraper pushes out the debris inside the collection box, making it easier for operators to clean the debris collected in the collection box and improving cleaning efficiency.

[0021] In summary, the present invention has the following main beneficial effects: By incorporating a dust collection component, during operation, the operator places the injection-molded product into the placement slot. The operator then moves the shearing blade downwards towards the product, cutting off the root of the sprue to separate the product from the sprue. During the cutting process, the exhaust fan is activated to draw air out of the connecting cavity, creating suction at the dust collection port to collect the debris generated during the cutting process. This process collects dust and debris into the collection box, achieving dust removal and preventing debris from splashing into the work area or adhering to the shearing blade, thus affecting the accuracy of the shearing blade in cutting the sprue.

[0022] By incorporating a suction head, the suction power of the suction holes is concentrated during use, increasing the stability of dust collection. A dust cover protects the exhaust fan, preventing debris from being sucked in and affecting its normal operation, thus improving practicality. A primary motor drives a primary lead screw, which in turn moves the fixing frame vertically downwards towards the product in the placement slot. The fixing slot then secures the product, preventing it from shaking during the cutting process, which could affect cutting accuracy and reduce product quality.

[0023] By setting up a hydraulic cylinder, when shearing the gate, the operator starts the hydraulic cylinder, which pushes the shearing blade downward through the hydraulic cylinder's telescopic shaft, so that the shearing blade cuts the product, improving work efficiency. By setting up a push block, after the product head is cut off, the operator pushes the moving plate, which in turn moves the push block to push the product in the placement slot, so that the product is pushed out of the placement slot, making it convenient for the operator to collect the processed product and improving practicality.

[0024] By setting up a second motor, the second motor drives the second lead screw to rotate, which in turn drives the moving plate to move horizontally, thus providing driving force for the moving plate. By setting up a discharge port, after the collection box has collected a certain amount of debris, the operator can remove the sealing door and clean the debris inside the collection box through the discharge port. The sheared material head is collected by the inclined plate and falls into the waste box. The push plate is pushed by the telescopic shaft of the second electric push rod to move and discharge the material head collected in the waste box, thus achieving the purpose of automatic material head collection and saving the operator's workload.

[0025] By setting up a first electric push rod, during use, the movement of the first electric push rod's telescopic shaft drives the scraper to move, and the scraper pushes out the debris inside the collection box, making it easier for operators to clean the debris collected in the collection box and improving cleaning efficiency. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a schematic diagram of the base structure of the present invention; Figure 3 This is a cross-sectional schematic diagram of the placement platform of the present invention; Figure 4 This is a schematic diagram of the movable plate structure of the present invention; Figure 5 This is a schematic diagram of the mounting plate structure of the present invention; Figure 6 This is a cross-sectional schematic diagram of the mounting plate of the present invention; Figure 7 This is a cross-sectional schematic diagram of the collection box of the present invention; Figure 8 This is a cross-sectional schematic diagram of the waste box of the present invention.

[0027] Reference numerals: 1. Base; 2. Placement platform; 3. Placement slot; 4. Mounting plate; 5. Moving slot; 6. Shearing blade; 7. Support block; 8. Collection slot; 9. Dust suction hole; 10. Connecting cavity; 11. Collection box; 12. Exhaust pipe; 13. Exhaust fan; 14. Dust suction head; 15. Dust cover; 16. Mounting block; 17. First motor; 18. First lead screw; 19. Fixing frame; 20. Fixing slot; 21. Pushing hole; 22. Hydraulic cylinder; 23. Pushing slot; 24. Moving plate; 25. Pushing block; 26. Second motor; 27. Second lead screw; 28. Discharge port; 29. ​​Sealing door; 30. First electric push rod; 31. Scraper; 32. Inclined plate; 33. Slide groove; 34. Waste box; 35. Second electric push rod; 36. Pushing plate. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 An automatic shearing mechanism for injection mold gates includes a base 1, a placement platform 2 connected to the top surface of the base 1, multiple placement slots 3 inside the placement platform 2, an mounting plate 4 connected to the top surface of the base 1, a moving slot 5 inside the mounting plate 4, a shearing blade 6 inside the moving slot 5, a dust collection component inside the moving slot 5 for dust collection, the dust collection component including multiple support blocks 7, the multiple support blocks 7 respectively connected to the bottom surface inside the moving slot 5, a collection slot 8 on the top surface of the support blocks 7, a dust collection hole 9 on the bottom surface inside the collection slot 8, a connecting cavity 10 on one side inside the mounting plate 4, a collection box 11 connected to the top surface of the base 1, an exhaust pipe 12 connected to one side of the collection box 11, one end of the exhaust pipe 12 connected to the inside of the connecting cavity 10, and a blower 13 connected to one side of the collection box 11. By incorporating a dust collection component, during operation, the operator places the injection-molded product into the placement slot 3. The operator then moves the shearing blade 6 downwards towards the product to cut off the root of the sprue, thus separating the product from the sprue. During the cutting process, the exhaust fan 13 is activated to extract air from the connecting cavity 10, generating suction through the dust collection port 9 to collect the debris generated during the cutting process. The dust and debris are collected into the collection box 11, achieving the purpose of dust removal and preventing debris from splashing into the work area and adhering to the shearing blade 6, thereby improving work efficiency.

[0030] As a further embodiment of the present invention, the dust collection assembly also includes a plurality of dust collection heads 14, which are respectively connected to one side of the inside of the dust collection hole 9, and a dust cover 15 is connected to one side of the inside of the collection box 11. By setting up the suction head 14, the suction power of the suction hole 9 is more concentrated during use, which increases the stability of suction. The dust cover 15 protects the exhaust fan 13, preventing debris from being sucked into the exhaust fan 13 and affecting its normal use, thus improving its practicality.

[0031] As a further embodiment of the present invention, the top surface of the base 1 is connected to two mounting blocks 16, the top surface of the mounting blocks 16 is connected to a first motor 17, one end of the drive shaft of the first motor 17 is connected to a first lead screw 18, the outer wall surface of the first lead screw 18 is threadedly connected to a fixing frame 19, and the bottom surface of the fixing frame 19 is provided with multiple fixing grooves 20. By setting the first motor 17, during use, the drive shaft of the first motor 17 rotates to drive the first lead screw 18 to rotate. The rotation of the first lead screw 18 drives the fixing frame 19 to move vertically, so that the fixing frame 19 moves downward and close to the product in the placement groove 3. The product is fixed by the fixing groove 20, which avoids the product shaking during the cutting process, which would affect the cutting accuracy and reduce the quality of the product.

[0032] As a further embodiment of the present invention, two pushing holes 21 are provided on the top surface of the mounting plate 4, and a hydraulic cylinder 22 is connected inside the pushing holes 21. One end of the telescopic shaft of the hydraulic cylinder 22 is connected to the top surface of the shearing blade 6. By setting up a hydraulic cylinder 22, when shearing the gate, the operator starts the hydraulic cylinder 22, and pushes the shearing blade 6 downward through the telescopic shaft of the hydraulic cylinder 22, so that the shearing blade 6 cuts the product, thereby improving work efficiency.

[0033] As a further embodiment of the present invention, a pusher groove 23 is provided on the bottom surface of the placement platform 2, a movable plate 24 is connected inside the pusher groove 23, and a plurality of pusher blocks 25 are connected to the top surface of the movable plate 24. By setting the push block 25, after the product head is cut off, the operator pushes the moving plate 24, and the moving plate 24 moves to drive the push block 25 to push the product in the placement groove 3, so that the product is pushed out of the placement groove 3, which makes it convenient for the operator to collect the processed product and improves its practicality.

[0034] As a further embodiment of the present invention, a second motor 26 is connected to one side of the placement platform 2, and a second lead screw 27 is rotatably connected inside the pusher trough 23. One end of the drive shaft of the second motor 26 is connected to one end of the second lead screw 27, and the second lead screw 27 is threadedly connected to the moving plate 24. By setting a second motor 26, during use, the second motor 26 drives the shaft to rotate, which in turn drives the second lead screw 27 to rotate. The rotation of the second lead screw 27 can drive the moving plate 24 to move horizontally, thus providing driving force for the movement of the moving plate 24.

[0035] As a further embodiment of the present invention, a discharge port 28 is provided on one side of the collection box 11, and a sealing door 29 is movably fitted inside the discharge port 28. An inclined plate 32 is connected to the top surface of the base 1, and a plurality of sliding grooves 33 are provided on the top surface of the inclined plate 32. A waste box 34 is connected to one side of the base 1, and a second electric push rod 35 is connected to one side of the inside of the waste box 34. One end of the telescopic shaft of the second electric push rod 35 is connected to a push plate 36. By setting up a discharge port 28, after the collection box 11 has collected a certain amount of debris, the operator can remove the sealing door 29 and clean the debris inside the collection box 11 through the discharge port 28, improving its practicality. The sheared material head is collected by the inclined plate 32, so that the sheared material head falls into the waste box 34. The pusher plate 36 is moved by the telescopic shaft of the second electric push rod 35, which can discharge the material head collected in the waste box 34, achieving the purpose of automatic material head collection and saving the workload of the operator.

[0036] As a further embodiment of the present invention, a first electric push rod 30 is connected to one side of the collection box 11, the telescopic shaft of the first electric push rod 30 extends into the interior of the collection box 11, and a scraper 31 is connected to one end of the telescopic shaft of the first electric push rod 30. By setting the first electric push rod 30, during use, the movement of the telescopic shaft of the first electric push rod 30 drives the scraper 31 to move, and the scraper 31 pushes out the debris inside the collection box 11, making it easier for operators to clean the debris collected in the collection box 11 and improving cleaning efficiency.

[0037] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic gate shearing mechanism for injection molds, characterized in that, include: The base (1) has a placement platform (2) connected to its top surface, and the placement platform (2) has multiple placement slots (3) inside. Mounting plate (4), which is connected to the top surface of the base (1), has a moving groove (5) inside and a shearing blade (6) inside the moving groove (5). A dust collection assembly is disposed inside the movable slot (5) for dust collection. The dust collection assembly includes multiple support blocks (7), which are respectively connected to the bottom surface of the movable slot (5). A collection slot (8) is provided on the top surface of the support block (7). A dust collection hole (9) is provided on the bottom surface of the collection slot (8). A connecting cavity (10) is provided on one side of the mounting plate (4). A collection box (11) is connected to the top surface of the base (1). An exhaust pipe (12) is connected to one side of the collection box (11). One end of the exhaust pipe (12) is connected to the inside of the connecting cavity (10). A fan (13) is connected to one side of the collection box (11).

2. The automatic gate shearing mechanism for injection molds according to claim 1, characterized in that, The dust collection assembly also includes: Multiple suction heads (14) are connected to one side of the inside of the suction hole (9); A dust cover (15) is attached to the inside side of the collection box (11).

3. The automatic gate shearing mechanism for injection molds according to claim 1, characterized in that, The top surface of the base (1) is connected to two mounting blocks (16), the top surface of the mounting blocks (16) is connected to a first motor (17), one end of the drive shaft of the first motor (17) is connected to a first lead screw (18), the outer wall of the first lead screw (18) is threaded with a fixing frame (19), and the bottom surface of the fixing frame (19) is provided with multiple fixing grooves (20).

4. The automatic gate shearing mechanism for injection molds according to claim 1, characterized in that, The mounting plate (4) has two push holes (21) on its top surface. A hydraulic cylinder (22) is connected inside the push holes (21). One end of the telescopic shaft of the hydraulic cylinder (22) is connected to the top surface of the shearing blade (6).

5. The automatic gate shearing mechanism for injection molds according to claim 1, characterized in that, The bottom surface of the placement platform (2) is provided with a pusher groove (23), and a moving plate (24) is connected inside the pusher groove (23). Multiple pushers (25) are connected to the top surface of the moving plate (24).

6. The automatic gate shearing mechanism for injection molds according to claim 5, characterized in that, A second motor (26) is connected to one side of the placement platform (2), and a second lead screw (27) is rotatably connected inside the pusher trough (23). One end of the drive shaft of the second motor (26) is connected to one end of the second lead screw (27), and the second lead screw (27) is threadedly connected to the moving plate (24).

7. The automatic gate shearing mechanism for injection molds according to claim 1, characterized in that, The collection box (11) has a discharge port (28) on one side, and a sealing door (29) is movably fitted inside the discharge port (28). The top surface of the base (1) is connected to an inclined plate (32), and the top surface of the inclined plate (32) has multiple sliding grooves (33). The base (1) has a waste box (34) on one side, and a second electric push rod (35) is connected inside the waste box (34). One end of the telescopic shaft of the second electric push rod (35) is connected to a push plate (36).

8. The automatic gate shearing mechanism for injection molds according to claim 7, characterized in that, A first electric push rod (30) is connected to one side of the collection box (11). The telescopic shaft of the first electric push rod (30) extends into the interior of the collection box (11). A scraper (31) is connected to one end of the telescopic shaft of the first electric push rod (30).

Images