Extrusion blow molding hollow forming machine

Abstract

The utility model relates to the technical field of blow molding machines, in particular to an extrusion blow molding hollow molding machine, which not only accelerates the cooling of plastics through cooling water and improves the working efficiency, but also is convenient to discharge shaped plastic products from a mold and saves the trouble of manual picking. Comprising a separation mechanism; the blow molding machine further comprises a discharging mechanism, an extruding mechanism, a molding mechanism, a blow molding mechanism and a cooling mechanism, the discharging mechanism is installed on the separating mechanism and facilitates discharging of shaped products, the extruding mechanism is installed on the separating mechanism and extrudes plastic, and the molding mechanism is installed on the discharging mechanism and molds the plastic. The blow molding mechanism is installed on the separating mechanism and blows up plastics, and the cooling mechanism is installed on the discharging mechanism and cools the molding mechanism and products.

Description

Technical Field

[0001] This utility model relates to the technical field of blow molding machines, and in particular to an extrusion blow molding hollow forming machine. Background Technology

[0002] Blow molding machines, also known as blow molding machines, work by placing a softened tubular plastic preform into a molding die and using compressed air to deform the preform along the die cavity, thereby blowing it into a hollow product with a short neck.

[0003] Existing extrusion blow molding machines, such as the fully automatic and efficient extrusion blow molding machine disclosed in utility model patent application number 202321405529.2, mainly include a base and two sets of molding components symmetrically slidably mounted on the base. The molding components include a mounting seat, multiple die heads arranged in a ring array on the side wall of the mounting seat, and a mounting frame. The mounting frame is slidably mounted on the base, the mounting seat is rotatably mounted on the mounting frame, and the die heads are fixedly mounted on the side wall of the mounting seat. The molding components also include a motor that drives the mounting seat to rotate. In use, multiple die heads of different specifications are arranged in a ring array on the mounting seat. Whenever different specifications of products need to be produced, the mounting seat is simply rotated by the motor to position the corresponding die head in the working position.

[0004] However, existing blow molding machines mostly require a long time to cool down after blow molding, which affects work efficiency. Moreover, the plastic bottles are easily stuck in the mold after molding, and still need to be removed manually, which is very troublesome. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides an extrusion blow molding machine that not only accelerates the cooling of plastics with cooling water, thus improving work efficiency, but also facilitates the discharge of the shaped plastic products from the mold, eliminating the trouble of manual picking.

[0006] This utility model discloses an extrusion blow molding machine, including a separation mechanism; it also includes a discharge mechanism, an extrusion mechanism, a molding mechanism, a blow molding mechanism, and a cooling mechanism. The discharge mechanism is installed on the separation mechanism to facilitate the discharge of the shaped product. The extrusion mechanism is installed on the separation mechanism to extrude the plastic. The molding mechanism is installed on the discharge mechanism to shape the plastic. The blow molding mechanism is installed on the separation mechanism to blow the plastic. The cooling mechanism is installed on the discharge mechanism to cool the molding mechanism and the product. The operator feeds plastic granules into the extrusion mechanism, which heats the plastic granules and extrudes the plastic. The plastic enters the molding mechanism, where the blow molding mechanism inserts into the plastic to inflate it. The molding mechanism shapes the plastic. The cooling mechanism sprays cooling water onto the outer surface of the molding mechanism to accelerate the cooling and shaping of the plastic. Then, the molding mechanism opens the mold, and the discharge mechanism pushes the product into the separation mechanism for discharge.

[0007] Preferably, the separation mechanism includes a workbench, a discharge cylinder, a drain plate, a water storage tank, and a discharge plate. The bottom of the workbench is connected to the ground, and a water collection trough is opened on the workbench. The top of the discharge cylinder is connected to the inside of the water collection trough on the workbench. The drain plate is installed at an angle inside the discharge cylinder. The water storage tank is installed on the workbench and is connected to the inside of the bottom of the discharge cylinder. The discharge plate is installed at an angle on the discharge cylinder. Cooling water and products fall into the discharge cylinder. The drain plate separates the cooling water and products. The cooling water flows back into the water storage tank, and the products roll down the drain plate and the discharge plate into the collection tank.

[0008] Preferably, the discharge mechanism includes a support, a first electric cylinder, and a rubber block. The bottom end of the support is connected to the top end of the worktable, the first electric cylinder is mounted on the support, and the top end of the rubber block is connected to the bottom end of the first electric cylinder. When the two sets of molding mechanisms separate, the first electric cylinder pushes the rubber block down, and the rubber block pushes out the product stuck in the molding mechanism, causing the product to fall into the discharge cylinder.

[0009] Preferably, the extrusion mechanism includes an extrusion cylinder, a feeding hopper, a motor, a screw, two sets of heating rings, and an extrusion head. The extrusion cylinder is mounted on the worktable, the bottom end of the feeding hopper is connected to the top end of the extrusion cylinder, the motor is mounted on the extrusion cylinder, the screw is rotatably mounted inside the extrusion cylinder and is connected to the motor for transmission, both sets of heating rings are mounted on the extrusion cylinder, and the extrusion head is mounted on the screw. Plastic granules are fed into the feeding hopper, the motor and the two sets of heating rings are started, the motor drives the screw to rotate, the screw extrudes and conveys the plastic granules, the two sets of heating rings heat the plastic granules to melt them, and the plastic sheet is extruded and discharged through the extrusion head.

[0010] Preferably, the molding mechanism includes two sets of hydraulic cylinders and a mold. Both sets of hydraulic cylinders are mounted on a bracket, and the mold is mounted on the top of the two sets of hydraulic cylinders. The mold has a built-in cutting blade. The two molding mechanisms are mounted opposite each other on the bracket. The two sets of hydraulic cylinders push the mold, causing the two sets of molds to close. The extruded plastic sheet enters the two sets of molds, and then the built-in cutting blade of the mold cuts the plastic sheet. The blow molding mechanism inflates the plastic sheet, and the two sets of molds work together to shape the plastic sheet. After the product cools, the two sets of hydraulic cylinders pull the mold back.

[0011] Preferably, the blow molding mechanism includes a second electric cylinder, an air blowing head, an air supply hose, and a valve. The second electric cylinder is mounted on the worktable, the air blowing head is mounted on the second electric cylinder, the air supply hose is connected to the inside of the air blowing head, and the valve is mounted on the air supply hose. When the second electric cylinder is activated, it pushes the air blowing head into the plastic skin, opens the valve, and air is delivered into the plastic skin through the air supply hose and the air blowing head, causing the plastic skin to expand.

[0012] Preferably, the cooling mechanism includes a water pump, a water extraction pipe, a water delivery hose, two sets of arc-shaped water distribution pipes, and multiple sets of water mist nozzles. The water pump is installed on the workbench, the water extraction pipe is installed on the water pump and connected to the inside of the water storage tank, the water delivery hose is installed on the water pump, the two sets of arc-shaped water distribution pipes are respectively installed on the two sets of molds, and the multiple sets of water mist nozzles are respectively installed on the two sets of arc-shaped water distribution pipes. When the water pump is started, the water pump extracts the cooling water from the water storage tank through the water extraction pipe and delivers the cooling water to the two sets of arc-shaped water distribution pipes through the water delivery hose. The two sets of arc-shaped water distribution pipes distribute the cooling water to the multiple sets of water mist nozzles, and the multiple sets of water mist nozzles spray the cooling water to cool the molds and plastic products.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: the worker feeds plastic granules into the extrusion mechanism, the extrusion mechanism heats the plastic granules and extrudes the plastic, the plastic enters the molding mechanism, the blow molding mechanism inserts into the plastic and blows it up, the molding mechanism shapes the plastic, the cooling mechanism sprays cooling water onto the outer surface of the molding mechanism to accelerate the cooling and shaping of the plastic, then the molding mechanism opens the mold, and the discharge mechanism pushes the product into the separation mechanism for discharge. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the isometric structure of this utility model;

[0015] Figure 2 This is a cross-sectional isometric structural diagram of the separation mechanism and the discharge mechanism of this utility model;

[0016] Figure 3 This is a cross-sectional isometric structural diagram of the extrusion mechanism and blow molding mechanism of this utility model;

[0017] Figure 4 This is a partially enlarged cross-sectional isometric structural diagram of the molding mechanism and cooling mechanism of this utility model.

[0018] The attached diagram is labeled as follows: 01, Separation mechanism; 11, Workbench; 12, Discharge cylinder; 13, Draining plate; 14, Water tank; 15, Discharge plate; 02, Discharge mechanism; 21, Support; 22, First electric cylinder; 23, Rubber block; 03, Extrusion mechanism; 31, Extrusion cylinder; 32, Feeding hopper; 33, Electric motor; 34, Screw; 35, Heating ring; 36, Extrusion head; 04, Molding mechanism; 41, Hydraulic cylinder; 42, Mold; 05, Blow molding mechanism; 51, Second electric cylinder; 52, Air blowing head; 53, Air supply hose; 54, Valve; 06, Cooling mechanism; 61, Water pump; 62, Water suction pipe; 63, Water supply hose; 64, Arc-shaped water distribution pipe; 65, Water mist nozzle. Detailed Implementation

[0019] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete. Example

[0020] This utility model discloses an extrusion blow molding hollow molding machine, including a separating mechanism 01; it also includes a discharging mechanism 02, an extrusion mechanism 03, a molding mechanism 04, a blow molding mechanism 05, and a cooling mechanism 06. The discharging mechanism 02 is installed on the separating mechanism 01 to facilitate the discharge of the shaped product. The extrusion mechanism 03 is installed on the separating mechanism 01 to extrude the plastic. The molding mechanism 04 is installed on the discharging mechanism 02 to shape the plastic. The blow molding mechanism 05 is installed on the separating mechanism 01 to blow the plastic. The cooling mechanism 06 is installed on the discharging mechanism 02 to cool the molding mechanism 04 and the product. Cooling is performed; the separation mechanism 01 includes a workbench 11, a discharge cylinder 12, a drain plate 13, a water tank 14, and a discharge plate 15. The bottom end of the workbench 11 is connected to the ground, and a water collection trough is opened on the workbench 11. The top end of the discharge cylinder 12 is connected to the inside of the water collection trough of the workbench 11. The drain plate 13 is installed obliquely inside the discharge cylinder 12. The water tank 14 is installed on the workbench 11 and is connected to the inside of the bottom end of the discharge cylinder 12. The discharge plate 15 is installed obliquely on the discharge cylinder 12. The discharge mechanism 02 includes a bracket 21, a first electric cylinder 22, and a rubber block 23. The bottom end of the bracket 21 is connected to the workbench 11. The top of the workbench 11 is connected to the first electric cylinder 22, which is mounted on the bracket 21. The top of the rubber block 23 is connected to the bottom of the first electric cylinder 22. The extrusion mechanism 03 includes an extrusion cylinder 31, a feeding hopper 32, a motor 33, a screw 34, two sets of heating rings 35, and an extrusion head 36. The extrusion cylinder 31 is mounted on the workbench 11. The bottom of the feeding hopper 32 is connected to the top of the extrusion cylinder 31. The motor 33 is mounted on the extrusion cylinder 31. The screw 34 is rotatably mounted inside the extrusion cylinder 31 and is connected to the motor 33 for transmission. Both sets of heating rings 35 are mounted on the extrusion cylinder 31. The extrusion head 36... 6 is installed on screw 34; the molding mechanism 04 includes two sets of hydraulic cylinders 41 and mold 42. Both sets of hydraulic cylinders 41 are installed on bracket 21, and mold 42 is installed on the top of the two sets of hydraulic cylinders 41. The mold 42 has a built-in cutting blade. The two sets of molding mechanisms 04 are installed opposite to each other on bracket 21; the blow molding mechanism 05 includes a second electric cylinder 51, an air blowing head 52, an air supply hose 53 and a valve 54. The second electric cylinder 51 is installed on worktable 11, the air blowing head 52 is installed on the second electric cylinder 51, the air supply hose 53 is connected to the inside of the air blowing head 52, and the valve 54 is installed on the air supply hose 53;During operation, plastic granules are first fed into the feeding hopper 32. The motor 33 and two sets of heating rings 35 are then started. The motor 33 drives the screw 34 to rotate, which extrudes and conveys the plastic granules. The two sets of heating rings 35 heat the plastic granules, melting them. The plastic skin is then extruded through the extrusion head 36. Two sets of hydraulic cylinders 41 push the molds 42, causing them to close. The extruded plastic skin enters the molds 42, where a cutting blade inside the molds 42 cuts it off. The second electric cylinder 51 is then activated, pushing the air blowing head 52 to insert into the plastic skin. Inside, valve 54 is opened, and air is delivered into the plastic sheet through air hose 53 and air blower 52, causing the plastic sheet to expand. Two sets of molds 42 work together to shape the plastic sheet. After the product cools, two sets of hydraulic cylinders 41 pull the molds 42 back, and the first electric cylinder 22 pushes the rubber block 23 down. The rubber block 23 pushes the product stuck in the mold 42 out, causing the product to fall into the discharge cylinder 12. Cooling water and product fall into the discharge cylinder 12, and the drain plate 13 separates the cooling water and product. The cooling water flows back into the water storage tank 14, and the product rolls down the drain plate 13 and discharge plate 15 into the collection box. Example

[0021] like Figures 1 to 4As shown, this utility model discloses an extrusion blow molding hollow forming machine based on Embodiment 1. The cooling mechanism 06 includes a water pump 61, a water suction pipe 62, a water delivery hose 63, two sets of arc-shaped water distribution pipes 64, and multiple sets of water mist nozzles 65. The water pump 61 is installed on the workbench 11, the water suction pipe 62 is installed on the water pump 61 and communicates with the inside of the water storage tank 14, the water delivery hose 63 is installed on the water pump 61, the two sets of arc-shaped water distribution pipes 64 are respectively installed on two sets of molds 42, and the multiple sets of water mist nozzles 65 are respectively installed on the two sets of arc-shaped water distribution pipes 64. On the water distribution pipe 64; during operation, firstly, plastic granules are fed into the feeding hopper 32, the motor 33 and two sets of heating rings 35 are started, the motor 33 drives the screw 34 to rotate, the screw 34 extrudes and conveys the plastic granules, the two sets of heating rings 35 heat the plastic granules to melt them, the plastic skin is extruded and discharged through the extrusion head 36, the two sets of hydraulic cylinders 41 push the mold 42 to close the two sets of molds 42, the extruded plastic skin enters the two sets of molds 42, and then the cutting blade built into the mold 42 cuts the plastic The plastic skin is cut, the second electric cylinder 51 is activated, and the second electric cylinder 51 pushes the air blowing head 52 into the plastic skin. The valve 54 is opened, and air is delivered into the plastic skin through the air supply hose 53 and the air blowing head 52, causing the plastic skin to expand. The two sets of molds 42 work together to shape the plastic skin. The water pump 61 is activated, and the water pump 61 draws cooling water from the water storage tank 14 through the water suction pipe 62. The cooling water is delivered to the two sets of arc-shaped water distribution pipes 64 through the water supply hose 63. The two sets of arc-shaped water distribution pipes 64 distribute the cooling water to multiple sets of water mist nozzles 6. Inside the mold 42, multiple water mist nozzles 65 spray cooling water to cool the mold 42 and the plastic product. After the product is cooled, two sets of hydraulic cylinders 41 pull the mold 42 back, and the first electric cylinder 22 pushes the rubber block 23 down. The rubber block 23 pushes the product stuck in the mold 42 out, causing the product to fall into the discharge cylinder 12. The cooling water and the product fall into the discharge cylinder 12. The drain plate 13 separates the cooling water and the product. The cooling water flows back into the water storage tank 14, and the product rolls down the drain plate 13 and the discharge plate 15 into the collection box.

[0022] The electric motor 33 and water pump 61 of this utility model are commercially available. Technical personnel in this industry only need to install and operate them according to the accompanying instruction manual, without requiring any creative work from those skilled in the art.

[0023] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. An extrusion blow molding machine, comprising a separation mechanism (01); characterized in that, It also includes a discharge mechanism (02), an extrusion mechanism (03), a molding mechanism (04), a blow molding mechanism (05), and a cooling mechanism (06). The discharge mechanism (02) is installed on the separation mechanism (01) to facilitate the discharge of the shaped product. The extrusion mechanism (03) is installed on the separation mechanism (01) to extrude the plastic. The molding mechanism (04) is installed on the discharge mechanism (02) to mold the plastic. The blow molding mechanism (05) is installed on the separation mechanism (01) to blow the plastic. The cooling mechanism (06) is installed on the discharge mechanism (02) to cool the molding mechanism (04) and the product.

2. The extrusion blow molding hollow forming machine as described in claim 1, characterized in that, The separation mechanism (01) includes a workbench (11), a discharge cylinder (12), a drain plate (13), a water tank (14), and a discharge plate (15). The bottom of the workbench (11) is connected to the ground. A water collection trough is opened on the workbench (11). The top of the discharge cylinder (12) is connected to the inside of the water collection trough of the workbench (11). The drain plate (13) is installed at an angle inside the discharge cylinder (12). The water tank (14) is installed on the workbench (11) and is connected to the inside of the bottom of the discharge cylinder (12). The discharge plate (15) is installed at an angle on the discharge cylinder (12).

3. The extrusion blow molding machine as described in claim 2, characterized in that, The material discharge mechanism (02) includes a bracket (21), a first electric cylinder (22) and a rubber block (23). The bottom end of the bracket (21) is connected to the top end of the workbench (11). The first electric cylinder (22) is mounted on the bracket (21). The top end of the rubber block (23) is connected to the bottom end of the first electric cylinder (22).

4. The extrusion blow molding machine as described in claim 2, characterized in that, The extrusion mechanism (03) includes an extrusion cylinder (31), a feeding hopper (32), a motor (33), a screw (34), two sets of heating rings (35) and an extrusion head (36). The extrusion cylinder (31) is mounted on the worktable (11). The bottom end of the feeding hopper (32) is connected to the top end of the extrusion cylinder (31). The motor (33) is mounted on the extrusion cylinder (31). The screw (34) is rotatably mounted inside the extrusion cylinder (31) and is connected to the motor (33) for transmission. Both sets of heating rings (35) are mounted on the extrusion cylinder (31). The extrusion head (36) is mounted on the screw (34).

5. The extrusion blow molding machine as described in claim 3, characterized in that, The molding mechanism (04) includes two sets of hydraulic cylinders (41) and a mold (42). Both sets of hydraulic cylinders (41) are mounted on the bracket (21). The mold (42) is mounted on the top of the two sets of hydraulic cylinders (41). The mold (42) has a built-in cutting blade. The two molding mechanisms (04) are mounted opposite each other on the bracket (21).

6. The extrusion blow molding machine as described in claim 2, characterized in that, The blow molding mechanism (05) includes a second electric cylinder (51), an air blowing head (52), an air supply hose (53), and a valve (54). The second electric cylinder (51) is installed on the workbench (11), the air blowing head (52) is installed on the second electric cylinder (51), the air supply hose (53) is connected to the inside of the air blowing head (52), and the valve (54) is installed on the air supply hose (53).

7. The extrusion blow molding machine as described in claim 5, characterized in that, The cooling mechanism (06) includes a water pump (61), a water suction pipe (62), a water delivery hose (63), two sets of arc-shaped water distribution pipes (64), and multiple sets of water mist nozzles (65). The water pump (61) is installed on the workbench (11), the water suction pipe (62) is installed on the water pump (61) and connected to the inside of the water storage tank (14), the water delivery hose (63) is installed on the water pump (61), the two sets of arc-shaped water distribution pipes (64) are respectively installed on the two sets of molds (42), and the multiple sets of water mist nozzles (65) are respectively installed on the two sets of arc-shaped water distribution pipes (64).

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