Cleaning mechanism for injection molding machine nozzle

Abstract

The utility model relates to the technical field of injection molding equipment, and discloses a cleaning mechanism for a nozzle of an injection molding machine, which comprises a cleaning box, a milling cutter is arranged in the cleaning box, a worm is rotatably arranged in a limiting hole, a cavity is formed in the milling cutter, a rotating rod is rotatably arranged in the cavity, and a rotating shaft is arranged in the rotating rod. A worm gear is fixed at one end of the rotating rod, the worm gear is meshed with the worm, a gear is fixed at the other end of the rotating rod, two triangular holes are formed in the outer wall surface of the milling cutter, triangular blades are arranged in the triangular holes in a sliding manner, and the triangular blades are meshed with the gear. A worker starts a first driving motor, when a triangular hole is located in a collecting barrel, the first driving motor is closed, the worker rotates a worm to enable two triangular blades to reversely penetrate out of the triangular hole, when the size of a cutting chip layer is consistent with that of a nozzle opening of an injection nozzle, the worm stops rotating, and it is guaranteed that the milling cutter can clean the injection nozzles of various specifications.

Description

Technical Field

[0001] This utility model relates to the technical field of injection molding equipment, specifically to a cleaning mechanism for injection molding machine nozzles. Background Technology

[0002] Injection molding machine nozzles control the flow rate and speed of the melt, allowing the plastic material to be evenly distributed in the mold during the injection molding process, thus obtaining high-quality injection molded products. However, injection molding machine nozzles often accumulate cooled injection material, which can cause clogging, necessitating cleaning of the nozzle's interior.

[0003] According to Chinese Patent No. CN221775120U, a nozzle cleaning mechanism for an injection molding machine includes a base. The top of the base has a sliding groove, and a reciprocating screw is rotatably installed in the sliding groove. A threaded block is threadedly connected to the reciprocating screw, and the threaded block is slidably installed in the sliding groove. A first fixed post is fixedly installed on the threaded block, and a fixed shaft is fixedly installed on the first fixed post. A second fixed post and a collecting mechanism are fixedly installed on the top of the base, and a rotating shaft is rotatably installed on the second fixed post. A triangular claw is fixedly installed on one end of the rotating shaft.

[0004] In the above scheme, the injection molding machine nozzle is clamped and fixed by triangular jaws. At this time, the drive motor is started, which drives the first bevel gear to rotate. The first bevel gear drives the second bevel gear to rotate, which in turn drives the transmission shaft to rotate. The transmission shaft drives the worm gear to rotate, which in turn drives the worm wheel to rotate. The worm wheel then drives the reciprocating screw to rotate. By having the worm gear drive the worm wheel, which in turn drives the reciprocating screw, the rotational speed of the reciprocating screw can be reduced. Simultaneously, the reciprocating screw drives the threaded block to move back and forth, which in turn drives the first fixed post to move back and forth. The first fixed post drives the entire fixed shaft to move back and forth, and the fixed shaft drives the push rod. The motor and scraper move synchronously back and forth, while the fixed shaft drives the brush and absorption tube to move synchronously back and forth. When the fixed shaft enters the nozzle, the push rod motor is activated, which drives the scraper to move. When the scraper contacts the inner wall of the nozzle, the push rod motor is turned off. At the same time, the reciprocating screw drives the first sprocket to rotate, which drives the second sprocket to rotate via a chain. The second sprocket drives the rotating shaft to rotate, which drives the triangular pawl to rotate. The triangular pawl drives the nozzle to rotate, and the scraper scrapes the inner wall of the nozzle while the brush cleans the inner wall, removing debris stuck to the inner wall of the nozzle.

[0005] The above solution still has the following drawbacks: the size of the scraper is fixed, and when different sizes of nozzles need to be cleaned, the scraper can only be replaced, which increases the cumbersomeness of the work and reduces the efficiency of the work. Utility Model Content

[0006] The purpose of this invention is to provide a cleaning mechanism for injection molding machine nozzles, which solves the problem that when the size of the scraper is fixed, the scraper can only be replaced when different specifications of nozzles need to be cleaned, which increases the cumbersomeness of the work and reduces the efficiency of the work.

[0007] To achieve the above-mentioned utility model objectives, the present utility model adopts the following technical solution: a cleaning mechanism for injection molding machine nozzles, comprising a cleaning box, a milling cutter disposed inside the cleaning box, a limiting hole formed on the outer wall of the milling cutter, a worm gear rotatably disposed inside the limiting hole, a cavity formed inside the milling cutter, a rotating rod rotatably disposed inside the cavity, a worm wheel fixed at one end of the rotating rod, the worm wheel meshing with the worm gear, a gear fixed at the other end of the rotating rod, two triangular holes formed on the outer wall of the milling cutter, a triangular blade slidably disposed inside the triangular holes, the triangular blade meshing with the gear.

[0008] Preferably, a first drive motor is fixed to one side of the cleaning box, and a lead screw is rotatably installed inside the cleaning box. The output end of the first drive motor passes through the body of the cleaning box and is connected to one end of the lead screw.

[0009] Preferably, the inner sidewall of the cleaning box is provided with a groove, and a lower sliding block is slidably disposed on the inner bottom surface of the cleaning box. The left and right sides of the lower sliding block are fixed with protruding teeth, and the outer wall of the protruding teeth is in contact with the inner wall of the groove.

[0010] Preferably, an upper sliding block is fixed to the top surface of the lower sliding block, and a second drive motor is fixed to one side of the upper sliding block. The output end of the second drive motor passes through the front and rear sides of the upper sliding block and is connected to the mounting end of the milling cutter.

[0011] Preferably, a support base is fixed inside the cleaning box, and a collection cylinder is fixed on the top surface of the support base.

[0012] Preferably, one end of the collecting cylinder is fixed with a three-jaw chuck, and an injection nozzle is fitted inside the three-jaw chuck.

[0013] Compared with the prior art, the cleaning mechanism for injection molding machine nozzles that adopts the above technical solution has the following beneficial effects:

[0014] 1. During use, the operator starts the first drive motor, which drives the lead screw to rotate. At this time, the lower sliding block slides backward inside the cleaning box, thereby driving the upper sliding block to slide backward. When the triangular hole is inside the collecting cylinder, the first drive motor is turned off. The operator rotates the worm gear, which drives the worm wheel to rotate clockwise, thereby driving the rotating rod to rotate. The rotation of the rotating rod drives the gear to rotate clockwise, causing the upper and lower triangular blades meshing with the gear to pass through the triangular hole in the opposite direction. When the chip layer size of the milling cutter is consistent with the opening of the injection nozzle, the worm gear is stopped to ensure that the milling cutter can clean injection nozzles of various specifications. The collecting cylinder can collect the cleaned debris to prevent debris from flying out and splashing, ensuring safety during operation. After the operation is finished, it can be directly emptied for cleaning, improving the practicality of the cleaning mechanism.

[0015] 2. During use, the operator starts the second drive motor to drive the milling cutter to rotate. The operator then starts the first drive motor again, and the upper sliding block drives the milling cutter to push backward, so that the milling cutter rotates and drills into the inside of the injection nozzle until it passes through the injection nozzle, thereby achieving rapid cleaning of the inside of the injection nozzle.

[0016] Third, during use, the operator will hold the injection nozzle inside the three-jaw chuck to ensure that the internal center line of the injection nozzle is always aligned with the axis of the milling cutter. At the same time, the three-jaw chuck will fix the injection nozzle in place to prevent it from falling out of its working position during cleaning operations, thereby improving the safety of the mechanism and ensuring its cleaning efficiency. Attached Figure Description

[0017] Figure 1 This is a perspective view of an embodiment.

[0018] Figure 2 This is an exploded three-dimensional schematic diagram of an embodiment.

[0019] Figure 3 This is a three-dimensional schematic diagram of the milling cutter in an embodiment.

[0020] Figure 4 This is a schematic diagram of the three-jaw chuck in an embodiment.

[0021] Figure 5 For the example Figure 2 Enlarged diagram of point A in the middle.

[0022] Figure 6 For the example Figure 3 Enlarged diagram of point B in the middle.

[0023] Figure 7 For the example Figure 3 Enlarged diagram of point C in the middle.

[0024] In the diagram: 1. Cleaning box; 2. Milling cutter; 3. Limiting hole; 4. Worm gear; 5. Cavity; 6. Rotating rod; 7. Worm wheel; 8. Gear; 9. Triangular blade; 10. Triangular hole; 11. First drive motor; 12. Lead screw; 13. Lower sliding block; 14. Groove; 15. Protruding tooth; 16. Upper sliding block; 17. Second drive motor; 18. Support base; 19. Collection cylinder; 20. Three-jaw chuck; 21. Injection nozzle. Detailed Implementation

[0025] The preferred embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0026] like Figures 1-7 As shown, a cleaning mechanism for an injection molding machine nozzle includes a cleaning box 1. A milling cutter 2 is disposed inside the cleaning box 1. A limiting hole 3 is formed on the outer wall of the milling cutter 2. A worm gear 4 is rotatably disposed inside the limiting hole 3. A cavity 5 is formed inside the milling cutter 2. A rotating rod 6 is rotatably disposed inside the cavity 5. A worm wheel 7 is fixed to one end of the rotating rod 6, meshing with the worm gear 4. A gear 8 is fixed to the other end of the rotating rod 6. Two triangular holes 10 are formed on the outer wall of the milling cutter 2. Triangular blades 9 are slidably disposed inside the triangular holes 10, meshing with the gear 8. The cleaning box 1 is connected to a gear 8 at one end of the rotating rod 6. The outer wall of the milling cutter 2 has two triangular holes 10. Triangular blades 9 are slidably arranged inside the triangular holes 10. The triangular blades 9 mesh with the gear 8. The cleaning box 1 is fixed to one side of the cleaning box 1. The cleaning box 1 is rotatably arranged with a lead screw 12. The output end of the first drive motor 11 passes through the body of the cleaning box 1 and is connected to one end of the lead screw 12. The inner side wall of the cleaning box 1 has a groove 14. The inner bottom surface of the cleaning box 1 is slidably arranged with a lower sliding block 13. The left and right sides of the lower sliding block 13 are fixed with protruding teeth 15. The outer wall of the protruding teeth 15 abuts against the inner wall of the groove 14. The cleaning box 1 is fixed to a support base 18. The top surface of the support base 18 is fixed with a collection cylinder 19. One end of the collection cylinder 19 is fixed with a three-jaw chuck 20. The three-jaw chuck 20 is fitted with an injection nozzle 21.

[0027] During use, the operator starts the first drive motor 11, which drives the lead screw 12 to rotate. At this time, the lower sliding block 13 slides backward inside the cleaning box 1, thereby driving the upper sliding block 16 to slide backward. When the triangular hole 10 is inside the collecting cylinder 19, the operator turns off the first drive motor 11. The operator then rotates the worm gear 4 to drive the worm wheel 7 to rotate clockwise, thereby driving the rotating rod 6 to rotate. The rotation of the rotating rod 6 drives the gear 8 to rotate clockwise, causing the upper and lower triangular blades 9 meshing with the gear 8 to pass through the triangular hole 10 in the opposite direction. When the chip layer size of the milling cutter 2 is consistent with the opening of the injection nozzle 21, the operator stops rotating the worm gear 4 to ensure that the milling cutter 2 can clean injection nozzles 21 of various specifications. The collecting cylinder 19 can collect the cleaned debris to prevent debris from flying out and splashing, ensuring safety during operation. After the operation is finished, the debris can be directly poured out for cleaning, improving the practicality of the cleaning mechanism.

[0028] like Figure 2 As shown, an upper sliding block 16 is fixed to the top surface of the lower sliding block 13, and a second drive motor 17 is fixed to one side of the upper sliding block 16. The output end of the second drive motor 17 passes through the front and rear sides of the upper sliding block 16 and is connected to the mounting end of the milling cutter 2.

[0029] During use, the operator starts the second drive motor 17, which drives the milling cutter 2 to rotate. The operator then starts the first drive motor 11 again, and the upper sliding block 16 drives the milling cutter 2 to push backward, so that the milling cutter 2 rotates and drills into the inside of the injection nozzle 21 until it passes through the injection nozzle 21, thereby achieving rapid cleaning of the inside of the injection nozzle 21.

[0030] like Figure 2 Figures and Figure 4 As shown, a three-jaw chuck 20 is fixed to one end of the collecting cylinder 19, and an injection nozzle 21 is installed inside the three-jaw chuck 20.

[0031] During use, the operator secures the injection nozzle 21 inside the three-jaw chuck 20 to ensure that the center line of the injection nozzle 21 is always aligned with the axis of the milling cutter 2. At the same time, the three-jaw chuck 20 secures the injection nozzle 21 to prevent it from dislodging from its working position during cleaning operations, thereby improving the safety of the mechanism and ensuring its cleaning efficiency.

[0032] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A cleaning mechanism for an injection molding machine nozzle, comprising a cleaning box (1), characterized in that, The cleaning box (1) is equipped with a milling cutter (2). A limiting hole (3) is opened on the outer wall of the milling cutter (2). A worm gear (4) is rotatably arranged inside the limiting hole (3). A cavity (5) is opened inside the milling cutter (2). A rotating rod (6) is rotatably arranged inside the cavity (5). A worm wheel (7) is fixed at one end of the rotating rod (6). The worm wheel (7) meshes with the worm gear (4). A gear (8) is fixed at the other end of the rotating rod (6). Two triangular holes (10) are opened on the outer wall of the milling cutter (2). A triangular blade (9) is slidably arranged inside the triangular hole (10). The triangular blade (9) meshes with the gear (8).

2. The cleaning mechanism for injection molding machine nozzles according to claim 1, characterized in that: A first drive motor (11) is fixed on one side of the cleaning box (1), and a lead screw (12) is rotatably installed inside the cleaning box (1). The output end of the first drive motor (11) passes through the body of the cleaning box (1) and is connected to one end of the lead screw (12).

3. The cleaning mechanism for an injection molding machine nozzle according to claim 1, characterized in that: The cleaning box (1) has a groove (14) on its inner sidewall. A lower sliding block (13) is slidably disposed on the inner bottom surface of the cleaning box (1). The lower sliding block (13) has protruding teeth (15) fixed on its left and right sides. The outer wall of the protruding teeth (15) is in contact with the inner wall of the groove (14).

4. A cleaning mechanism for an injection molding machine nozzle according to claim 3, characterized in that: The top surface of the lower sliding block (13) is fixed with an upper sliding block (16), and a second drive motor (17) is fixed on one side of the upper sliding block (16). The output end of the second drive motor (17) passes through the front and rear sides of the upper sliding block (16) and is connected to the mounting end of the milling cutter (2).

5. A cleaning mechanism for an injection molding machine nozzle according to claim 1, characterized in that: The cleaning box (1) has a support base (18) fixed inside, and a collection tube (19) is fixed on the top surface of the support base (18).

6. A cleaning mechanism for an injection molding machine nozzle according to claim 5, characterized in that: One end of the collecting cylinder (19) is fixed with a three-jaw chuck (20), and an injection nozzle (21) is fitted inside the three-jaw chuck (20).

Images