Blowing mold capable of removing stub bars

Abstract

The utility model provides a stub bar removing blow mold which comprises a workbench, the lower surface of the workbench is movably connected with a main lead screw through a bearing, the main lead screw is connected with a main motor through a coupler, the main motor is fixedly connected to the lower surface of the workbench, and a main sliding block in threaded connection with the main lead screw is slidably connected into a main sliding groove formed in the workbench. The upper surface of the main sliding block is fixedly connected with a movable plate, the movable plate is fixedly connected with the outer side face of a movable mold, confluence grooves are symmetrically formed in the fixed mold and the movable mold and communicate with a cooling groove, and the upper surface of the fixed mold is fixedly connected with a mounting plate. Through cooperation of the main motor, the main lead screw, the main sliding block, the movable plate, the positioning rod, the positioning plate and the workbench, the fixed mold and the movable mold can be automatically corrected during mold closing, when the positions of the fixed mold and the movable mold are obviously deviated, mold closing of the fixed mold and the movable mold cannot be completed, waste of raw materials can be avoided, and the production cost is reduced. And the quality of blow molding products is ensured.

Description

Technical Field

[0001] This utility model relates to the field of blow molding die technology, specifically to a blow molding die for removing the sprue. Background Technology

[0002] Blow molding molds, also known as hollow blow molding molds, are used to blow-form hollow products by placing the still-softened tubular thermoplastic preform extruded from the extruder into the molding die, then introducing compressed air. The air pressure deforms the preform along the mold cavity, creating a hollow product with a short neck. Blow molding is a method that uses gas pressure to inflate a hot-melt preform closed in the mold to form a hollow product. However, existing blow molding molds are inconvenient to cool during use, preventing the blow-molded product from cooling and molding quickly enough for mold opening. This results in longer production times and lower production efficiency for each blow molding cycle. In addition, some blow molding molds lack corresponding positioning structures, which can lead to positional deviations when the mold closes after prolonged use. This can cause boundary edges to appear on the outer surface of the blow-molded product, reducing its quality. Utility Model Content

[0003] To overcome the shortcomings of the existing technology, a blow molding die for removing the sprue is provided to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, a blow molding die for removing sprue is provided, comprising: a worktable, a main lead screw movably connected to the lower surface of the worktable via bearings, the main lead screw being connected to a main motor via a coupling, the main motor being fixedly connected to the lower surface of the worktable, and a main slide block screwed to the main lead screw being slidably connected within a main slide groove opened in the worktable; a movable plate being fixedly connected to the upper surface of the main slide block, the movable plate being fixedly connected to the outer side of a moving mold, and symmetrically formed confluence grooves in both the fixed mold and the moving mold, the confluence grooves being connected to a cooling groove; symmetrically connected positioning plates on both sides of the opening end of the fixed mold; and the moving mold opening end... Positioning slots are provided on both sides of the opening end, corresponding to the positions of the positioning plates. A mounting plate is fixedly connected to the upper surface of the fixed mold, and an auxiliary motor is fixedly connected to the upper surface of the mounting plate. The output shaft of the auxiliary motor is fixedly connected to the material removal head cutter. At the same time, blow molding openings are provided on the upper surfaces of both the fixed mold and the moving mold. A PLC component is fixedly connected to one end of the upper surface of the worktable through the mounting table, and a water storage tank is located below the worktable. One end of the water storage tank is connected to the upper confluence channels of the fixed mold and the moving mold through a water injection pipe, and the other end of the water storage tank is connected to the lower confluence channels of the fixed mold and the moving mold through a recovery pipe.

[0005] Preferably, both the fixed mold and the moving mold are semi-cylindrical structures, and two sets of confluence grooves are symmetrically opened at the upper and lower ends of the fixed mold and the moving mold, and both sets of confluence grooves are fan-shaped annular structures. At the same time, multiple sets of cooling grooves are opened at equal intervals around the two sets of confluence grooves in the circumferential direction, and the multiple sets of cooling grooves are cylindrical structures.

[0006] Preferably, the mounting plate fixedly connected to the upper surface of the fixed mold has an L-shaped cross-section. The surface of the mounting plate is movably connected to the output shaft of the auxiliary motor through a bearing. Two sets of blades are symmetrically opened on both sides of the end of the de-material cutter away from the auxiliary motor. At the same time, the de-material cutter rotates in contact with the upper surface of the fixed mold.

[0007] Preferably, the movable plate has a rectangular structure, the side of the movable plate that is in contact with the moving mold has a concave structure, and the lower surfaces of the movable plate and the moving mold are slidably connected to the upper surface of the worktable. At the same time, two sets of positioning holes are symmetrically opened at both ends of the movable plate, and both sets of positioning holes have a cylindrical structure.

[0008] Preferably, two sets of positioning rods are fixedly connected to both ends of the movable plate through positioning holes. Both sets of positioning rods are cylindrical in shape, and the axial length of the positioning rods is greater than the axial length of the positioning holes. Positioning grooves are opened on the upper surface of the worktable relative to the positions of the positioning rods, and the positioning grooves are elongated in shape.

[0009] Preferably, a main slide groove is formed on the upper surface of the worktable relative to the position of the main lead screw. The main slide groove has a rectangular structure, and the main slider that is slidably connected in the main slide groove has a square structure. The main slider and the moving plate are combined to form a convex structure.

[0010] Preferably, the mounting platform fixedly connected to one end of the workbench has a hollow L-shaped structure, and the mounting surface of the bent part of the mounting platform has an inclined structure. The water storage tank set below the workbench has a cuboid structure, and the diversion box fixedly connected to one end of the water storage tank has a square structure with a cross-section of a U-shape. At the same time, two sets of water injection pipes are fixedly connected to the surface of the diversion box.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: Through the cooperation of the water storage tank, the diversion box, the water injection pipe, the manifold, the cooling tank, and the recovery pipe, after the fixed mold and the moving mold complete the shaping of the blow-molded product, the fixed mold and the moving mold can quickly cool the blow-molded product through the coolant, thereby improving the efficiency of cooling and shaping of the blow-molded product, shortening the production time of a single blow molding, and thus helping to improve the overall production efficiency. At the same time, through the cooperation of the moving plate, the main slide, the positioning rod, and the positioning plate, the stability of the moving mold during movement can be enhanced, and automatic correction can be performed when the fixed mold and the moving mold are closed. Furthermore, when there is a significant positional offset between the moving mold and the fixed mold, they cannot complete the mold closing, which makes it easier for workers to detect problems in time and carry out corresponding maintenance, thereby reducing the loss of raw materials, ensuring the overall production quality of the blow-molded product, and reducing the proportion of defective products. Attached Figure Description

[0012] Figure 1 This is a front view schematic diagram of an embodiment of the present utility model.

[0013] Figure 2 This is a side view of an embodiment of the present utility model.

[0014] Figure 3 This is a partial top view of an embodiment of the present utility model.

[0015] Figure 4 This is an embodiment of the present utility model. Figure 1 Enlarged diagram of point A.

[0016] In the diagram: 1. Workbench; 2. Fixed mold; 3. Mounting platform; 4. PLC assembly; 5. Cooling tank; 6. Blow molding nozzle; 7. Material removal cutter; 8. Manifold; 9. Auxiliary motor; 10. Water storage tank; 11. Diverter box; 12. Water injection pipe; 13. Recovery pipe; 14. Main motor; 15. Moving mold; 16. Main slider; 17. Moving plate; 18. Main lead screw; 19. Positioning rod; 20. Mounting plate. Detailed Implementation

[0017] Reference Figures 1 to 4 As shown, this utility model provides a blow molding die for removing sprue, including: a worktable 1, the lower surface of which is movably connected to a main lead screw 18 via bearings, the main lead screw 18 being connected to a main motor 14 via a coupling, the main motor 14 being fixedly connected to the lower surface of the worktable 1, and a main slider 16 screwed to the main lead screw 18 being slidably connected in a main groove opened in the worktable 1, a moving plate 17 being fixedly connected to the upper surface of the main slider 16, the moving plate 17 being fixedly connected to the outer side of a moving mold 15, and both the fixed mold 2 and the moving mold 15 having symmetrically opened confluence grooves 8, the confluence grooves 8 being connected to a cooling groove 5, the two sides of the opening end of the fixed mold 2 being symmetrically connected to positioning plates, and the moving mold 15 having an opening end... Positioning slots are provided on both sides of the mouth end relative to the positioning plate. The mounting plate 20 is fixedly connected to the upper surface of the fixed mold 2. The auxiliary motor 9 is fixedly connected to the upper surface of the mounting plate 20. The output shaft of the auxiliary motor 9 is fixedly connected to the de-material cutter 7. At the same time, the upper surfaces of the fixed mold 2 and the moving mold 15 are both provided with blow molding ports 6. One end of the upper surface of the workbench 1 is fixedly connected to the PLC component 4 through the mounting platform 3. The water tank 10 is located below the workbench 1. One end of the water tank 10 is connected to the confluence channel 8 at the upper end of the fixed mold 2 and the moving mold 15 through the water injection pipe 12. The other end of the water tank 10 is connected to the confluence channel 8 at the lower end of the fixed mold 2 and the moving mold 15 through the recovery pipe 13.

[0018] In this embodiment, the main motor 14, which is electrically connected, is started by the PLC component 4. The main motor 14 drives the main lead screw 18 to rotate through the coupling. The main lead screw 18 pushes the moving plate 17 and the moving mold 15 to move synchronously through the screwed main slider 16. Then, the moving mold 15 and the fixed mold 2 can be smoothly closed. During the mold closing process, the positioning plate provided on the surface of the fixed mold 2 can be smoothly embedded into the corresponding positioning groove on the surface of the moving mold 15. Moreover, the inclined structure of the embedded end of the positioning plate can help to correct the position of the moving mold 15 during the embedding process, thereby ensuring the mold closing effect between the fixed mold 2 and the moving mold 15. After that, the raw material is introduced into the mold cavity through the blow molding port 6 and blow molding is performed accordingly. After the blow molding is completed, the liquid pump inside the electrically connected water storage tank 10 is started by the PLC component 4. The liquid pump can inject coolant into the distribution box 11 first. The coolant in the distribution box 11 is then injected into the distribution box 11. The liquid can flow into the confluence channels 8 opened at the upper end of the fixed mold 2 and the moving mold 15 through two sets of water injection pipes 12 respectively. The confluence channels 8 flow into the confluence channels 8 opened at the lower end of the fixed mold 2 and the moving mold 15 through the corresponding cooling channels 5 and flow back to the water storage tank 10 through the corresponding connected recovery pipe 13. The cooling module set in the water storage tank 10 can cool the liquid in real time, thereby ensuring the cooling effect of the liquid on the blow-molded product and improving the cooling and shaping efficiency of the blow-molded product. The auxiliary motor 9, which is electrically connected, is started by the PLC component 4. The output shaft of the auxiliary motor 9 drives the fixedly connected de-shaving head 7 to rotate at low speed for half a revolution and then automatically reverses and resets. The blade of the de-shaving head 7 can smoothly cut off the material head of the blow-molded product. Then, the main motor 14 is started by the PLC component 4. The main motor 14 reverses the main screw 18 to push the main slider 16, the moving plate 17 and the moving mold 15 to reset, which is convenient for the subsequent removal of the blow-molded product.

[0019] In a preferred embodiment, both the fixed mold 2 and the moving mold 15 are semi-cylindrical structures. Two sets of confluence grooves 8 are symmetrically opened at the upper and lower ends of the fixed mold 2 and the moving mold 15, and both sets of confluence grooves 8 are fan-shaped annular structures. At the same time, multiple sets of cooling grooves 5 are opened at equal intervals around the two sets of confluence grooves 8 in the circumferential direction, and the multiple sets of cooling grooves 5 are cylindrical structures.

[0020] In this embodiment, as Figure 1 , Figure 2 and Figure 3 The two sets of confluence channels 8 correspond to multiple sets of cooling channels 5, which enable the coolant to flow evenly in the fixed mold 2 and the moving mold 15, thereby helping to enhance the efficiency of cooling and shaping of blow-molded products, and thus helping to improve the production efficiency of blow-molded products.

[0021] As a preferred embodiment, the mounting plate 20 fixedly connected to the upper surface of the fixed mold 2 has an L-shaped cross section. The surface of the mounting plate 20 is movably connected to the output shaft of the auxiliary motor 9 through a bearing. Two sets of blades are symmetrically opened on both sides of the end of the de-material cutter 7 away from the auxiliary motor 9. At the same time, the de-material cutter 7 rotates in contact with the upper surface of the fixed mold 2.

[0022] In this embodiment, as Figure 1 , Figure 3 and Figure 4 The structure of the mounting plate 20 can help limit the rotation range of the de-cutting head 7 and also help enhance the stability of the auxiliary motor 9. The auxiliary motor 9 is a servo motor. The double-edged design of the de-cutting head 7 can improve the convenience of cutting. Moreover, the de-cutting head 7 rotates in contact with the upper surface of the fixed mold 2, which can help enhance the stability of the de-cutting head 7 during rotation.

[0023] As a preferred embodiment, the movable plate 17 has a rectangular structure, and the side of the movable plate 17 that is in contact with the moving mold 15 has a concave structure. The lower surfaces of the movable plate 17 and the moving mold 15 are slidably connected to the upper surface of the worktable 1. At the same time, two sets of positioning holes are symmetrically opened at both ends of the movable plate 17, and both sets of positioning holes have a cylindrical structure.

[0024] In this embodiment, as Figure 1 , Figure 2 and Figure 3 The fixed connection between the movable plate 17 and the moving mold 15 can help enhance the stability of the moving mold 15 when it moves, while the opening of the positioning hole facilitates the installation and removal of the positioning rod 19 and reduces the probability of accidental displacement of the movable plate 17 during its movement.

[0025] In a preferred embodiment, two sets of positioning rods 19 are fixedly connected to both ends of the movable plate 17 through positioning holes. Both sets of positioning rods 19 are cylindrical in shape, and the axial length of the positioning rods 19 is greater than the axial length of the positioning holes. Positioning grooves are opened on the upper surface of the worktable 1 relative to the positions of the positioning rods 19, and the positioning grooves are elongated in shape.

[0026] In this embodiment, as Figure 1 , Figure 2 and Figure 3 The lower end of the positioning rod 19 is slidably connected in the positioning groove, and the size of the lower end of the positioning rod 19 and the positioning groove are matched, which can help enhance the stability of the moving plate 17 and the moving mold 15 when they move, and ensure that the fixed mold 2 and the moving mold 15 can be closed smoothly.

[0027] In a preferred embodiment, a main slide groove is provided on the upper surface of the worktable 1 relative to the position of the main lead screw 18. The main slide groove has a rectangular structure, and the main slider 16 slidably connected in the main slide groove has a square structure. The main slider 16 and the moving plate 17 are combined to form a convex structure.

[0028] In this embodiment, as Figure 1 , Figure 2 and Figure 3 The dimensions of the main slide and the main slide block 16 are matched, which helps to enhance the stability of the main slide block 16 when it moves, so that the main slide block 16 can stably drive the fixedly connected moving plate 17 and the moving mold 15 to move synchronously.

[0029] In a preferred embodiment, the mounting platform 3, which is fixedly connected to one end of the workbench 1, has a hollow L-shaped structure, and the mounting surface of the bent part of the mounting platform 3 has an inclined structure. The water storage tank 10 set below the workbench 1 has a cuboid structure, and the diversion box 11, which is fixedly connected to one end of the water storage tank 10, has a square structure. The cross-section of the diversion box 11 has a U-shaped structure, and two sets of water injection pipes 12 are fixedly connected to the surface of the diversion box 11.

[0030] In this embodiment, as Figure 1 , Figure 2 and Figure 3 The hollow structure of the mounting platform 3 helps to reduce its weight, and the sloping structure of the mounting surface allows the operating surface of the PLC component 4 to face upwards, which facilitates the operation of the workers. The setting of the diversion box 11 allows the two sets of water injection pipes 12 to inject coolant simultaneously. At the same time, both the water injection pipe 12 and the recovery pipe 13 are made of flexible hose.

[0031] The blow molding die for removing the sprue of this utility model, through the cooperation of the main motor 14, main lead screw 18, main slider 16, moving plate 17, positioning rod 19, positioning plate and worktable 1, enables the fixed mold 2 and moving mold 15 to be automatically corrected when the mold is closed. When there is a significant deviation in the position of the fixed mold 2 and moving mold 15, the two cannot complete the mold closing, thereby avoiding the waste of raw materials and ensuring the quality of blow molded products. At the same time, the liquid pump and cooling module in the water storage tank 10 are all common brand models on the market.

Claims

1. A trim removal blow mold, comprising: The utility model provides a workbench (1), its characterized in be: workbench (1) lower surface is through bearing swing joint main lead screw (18), main lead screw (18) is through the shaft coupling connection main motor (14), and main motor (14) fixed connection is in workbench (1) lower surface, and main lead screw (18) screw connection main sliding block (16) sliding connection in the main sliding slot of workbench (1) opening, and main sliding block (16) upper surface fixed connection moving plate (17), and moving plate (17) fixed connection dynamic mould (15) outside, and fixed mould (2) and dynamic mould (15) inside all are symmetrically opened confluence groove (8), and confluence groove (8) communication cooling groove (5), and fixed mould (2) opening both sides symmetrically connected positioning plate, and dynamic mould (15) opening both sides corresponding confluence groove (8) are set up in the position opposite positioning plate, and fixed mould (2) upper surface fixed connection mounting plate (20), and mounting plate (20) upper surface fixed connection auxiliary motor (9), and auxiliary motor (9) output shaft fixed connection material head cutter (7), simultaneously fixed mould (2) and dynamic mould (15) upper surface all are opened blow molding mouth (6), and workbench (1) upper surface one end is through mounting table (3) fixed connection PLC assembly (4), and water storage tank (10) are set up in workbench (1) below, and water storage tank (10) one end is through water injection pipe (12) respectively confluence groove (8) of fixed mould (2) and dynamic mould (15) upper end communication, and water storage tank (10) other end is through recovery pipe (13) respectively confluence groove (8) of fixed mould (2) and dynamic mould (15) lower end communication.

2. A trim removal blow mold in accordance with claim 1 wherein, The fixed mould (2) and dynamic mould (15) are all semicylindrical structure, and the upper and lower ends of the fixed mould (2) and dynamic mould (15) are symmetrically provided with two groups of confluence grooves (8), and the two groups of confluence grooves (8) are all fan ring structure, and a plurality of groups of cooling grooves (5) are symmetrically arranged between the two groups of confluence grooves (8) along the circumferential direction, and the plurality of groups of cooling grooves (5) are all cylindrical structure.

3. A trim removal blow mold in accordance with claim 1 wherein, The mounting plate (20) fixedly connected to the upper surface of the fixed mould (2) is L-shaped structure, the output shaft of the auxiliary motor (9) is movably connected to the surface of the mounting plate (20) through a bearing, and two groups of cutting edges are symmetrically arranged on the side, away from the auxiliary motor (9), of the material head cutter (7), and the material head cutter (7) rotates close to the upper surface of the fixed mould (2).

4. A trim removal blow mold in accordance with claim 1 wherein, The moving plate (17) is overall rectangular structure, one side of the moving plate (17) close to the dynamic mould (15) is concave structure, and the lower surfaces of the moving plate (17) and the dynamic mould (15) are both slidably connected to the upper surface of the workbench (1), and two groups of positioning holes are symmetrically arranged at the two ends of the moving plate (17), and the two groups of positioning holes are all cylindrical structure.

5. A trim removal blow mold in accordance with claim 1 wherein, The two groups of positioning rods (19) are fixedly connected to the two ends of the moving plate (17) through the positioning holes, and the two groups of positioning rods (19) are all cylindrical structure, the axial length of the positioning rod (19) is greater than the axial length of the positioning hole, and the positioning groove is arranged on the upper surface of the workbench (1) corresponding to the position of the positioning rod (19), and the positioning groove is long strip structure.

6. A trim removal blow mold in accordance with claim 1 wherein, The position of the upper surface of the workbench (1) relative to the main lead screw (18) corresponds to the opening of a main sliding groove, the main sliding groove is a rectangular structure, and the main sliding block (16) slidingly connected in the main sliding groove is a square structure, and the main sliding block (16) and the moving plate (17) are combined together to form a convex letter-shaped structure.

7. A trim removal blow mold in accordance with claim 1 wherein, The mounting table (3) fixedly connected to one end of the workbench (1) is a hollow L-shaped structure, the mounting surface of the bending part of the mounting table (3) is an inclined surface structure, the water storage tank (10) arranged below the workbench (1) is a rectangular structure, the shunt box (11) fixedly connected to one end of the water storage tank (10) is a square structure, the cross section of the shunt box (11) is a mouth-shaped structure, and two groups of water injection pipes (12) are fixedly connected to the surface of the shunt box (11).

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