Plastic bottle blank injection molding machine capable of achieving rapid shaping

Abstract

The invention discloses a quick-shaping plastic bottle blank injection molding machine, and aims to solve the technical problem that burrs need to be removed after a bottle body is shaped at present. The quick-shaping plastic bottle blank injection molding machine structurally comprises an injection molding machine body, a charging barrel is fixedly mounted on one side of the injection molding machine body, a screw feeder is mounted at the bottom of the charging barrel in a communicating manner, and a processing bin is mounted at the other end of the screw feeder in a communicating manner. After a first conveying frame is driven to guide a hollow cylindrical bottle body into a shaping bin, an electric push rod is driven to push a sealing table to be in butt joint with two groups of shaping molds, and sealing blocks on the sealing table are wedged in sealing grooves in the tops of the two groups of shaping molds; meanwhile, external pressurizing equipment conveys air pressure to pressurizing pipes located in the two sets of shaping molds, the hollow cylindrical bottle body is continuously expanded until the hollow cylindrical bottle body is attached to the inner walls of the two sets of shaping molds, and finally after the two sets of shaping molds are opened, bottle body forming can be efficiently and rapidly completed; compared with a conventional injection blow molding process, the deburring time of the bottle body is greatly shortened.

Description

Technical Field

[0001] The invention relates to the technical field of plastic bottle injection molding, in particular to a rapid shaping plastic bottle embryo injection molding machine. Background Art

[0002] At present, plastic bottles are mainly made of materials such as polyethylene or polypropylene and added with a variety of organic solvents. Plastic bottles widely use polyester, polyethylene, and polypropylene as raw materials. After adding corresponding organic solvents, they are heated at high temperatures and blow-molded, extruded, or injection-molded through plastic molds. They are mainly used for liquid or solid disposable plastic packaging containers such as beverages, foods, pickles, honey, dried fruits, edible oils, and agricultural and veterinary drugs. Plastic bottles have the characteristics of being not easy to break, low cost, high transparency, and food-grade raw materials.

[0003] Among them, the injection molding machine is the main production process of plastic bottles. The injection molding machine is also known as the injection molding machine or injection machine. It is the main molding equipment for thermoplastic plastics or thermosetting plastics using plastic molding molds to make plastic products of various shapes. It is divided into vertical, horizontal, and all-electric types. The injection molding machine can heat the plastic and apply high pressure to the molten plastic to make it ejected and fill the mold cavity.

[0004] The conventional injection molding process on the market is the injection blow molding process. During the production process, this process will cause excess hair to form on the outer wall of the bottle body, which needs to be removed mechanically, greatly reducing the production efficiency of plastic bottles. Therefore, it is necessary to design a new technical solution to solve this problem. By pre-forming the bottle body first and then completing the shaping of the plastic bottle through high-temperature blow molding, the production efficiency of plastic bottles is greatly improved. Summary of the invention

[0005] The object of the present invention is to provide a rapid shaping plastic bottle preform injection molding machine to solve the current technical problem of needing to remove burrs after shaping the bottle body.

[0006] To achieve the above object, the present invention provides the following technical solution: a rapid shaping plastic bottle embryo injection molding machine, comprising an injection molding machine, a barrel is fixedly installed on one side of the injection molding machine, a screw feeder is connected and installed at the bottom of the barrel, a processing chamber is connected and installed at the other end of the screw feeder, and a preforming mechanism is installed inside the processing chamber. Through the preforming mechanism inside the processing chamber, high-temperature liquid polypropylene can be processed into a hollow cylindrical bottle body;

[0007] A first conveying frame is fixedly installed on one side of the processing chamber, and a shaping chamber is fixedly installed on the other end of the first conveying frame. A shaping mechanism is installed inside the shaping chamber. Through the shaping mechanism inside the shaping chamber, hollow cylindrical plastic can be processed into bottle embryos, and shaping can be completed efficiently and quickly.

[0008] As a preferred embodiment of the present invention, the preforming mechanism includes an injection molding plate fixedly installed on one side of the processing chamber, a cavity is opened inside the injection molding plate, a plurality of groups of equidistantly distributed injection molding heads are connected and installed on one side of the cavity, a docking plate is installed on the other side of the processing chamber, and a plurality of groups of equidistantly distributed docking molds are fixedly installed on one side of the docking plate, the side wall of the docking plate is fixedly installed with the first manipulator, the injection molding plate is connected and installed with one end of the screw feeder, and the plurality of groups of docking molds correspond to each group of injection molding heads.

[0009] As a preferred embodiment of the present invention, the molding mechanism includes an electric push rod fixedly installed on one side of the top of the molding bin, a sealing platform fixedly installed on the other end of the electric push rod, a sealing block fixedly installed on the outer side of the bottom of the sealing platform, a pressure sensor fixedly installed on the bottom of the sealing block, a boost pipe fixedly installed in the middle of the bottom of the sealing platform, molding molds installed on both sides of the molding bin, sealing grooves opened on the outer sides of the tops of the two groups of molding molds and mold grooves opened in the middle of the two groups of molding molds, second manipulators are fixedly installed on the side walls of the two groups of molding molds, the two groups of mold grooves correspond to the boost pipes, and the two groups of sealing grooves correspond to the sealing blocks.

[0010] As a preferred embodiment of the present invention, a heating cylinder is fixedly installed on the side wall of the screw feeder, and a constant temperature heating wire is fixedly installed on the inner wall of the heating cylinder.

[0011] As a preferred embodiment of the present invention, a loading platform is fixedly installed on one side of the injection molding machine, the top of the loading platform corresponds to the top of the barrel, and a ladder is fixedly installed on one side of the loading platform.

[0012] As a preferred embodiment of the present invention, a preheating bin is installed in communication with one side of the inner cavity of the shaping bin, and the preheating bin is installed in communication with one end of the first conveying rack.

[0013] As a preferred embodiment of the present invention, a second conveying rack is fixedly installed at the discharge end of the shaping bin, and the upper ports of the first conveying rack and the second conveying rack correspond to the ports of the bottle body.

[0014] As a preferred embodiment of the present invention, cooling grooves are provided on the inner sides of the two groups of shaping dies, and one ends of the two groups of cooling grooves are connected and connected with connectors.

[0015] As a preferred embodiment of the present invention, a fitting block is installed at the other end of one group of cooling grooves, and a fitting groove is opened at the other end of another group of cooling grooves, and the fitting block and the fitting groove correspond to each other.

[0016] As a preferred embodiment of the present invention, an air guide pipe is installed on the top of the boost pipe, the guide pipe passes through the sealing platform and is connected to the boosting equipment, and a plurality of groups of equidistantly distributed air holes are opened on the side wall of the boost pipe.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention combines a preforming mechanism with a shaping mechanism. After the docking mold on the docking plate is pushed to dock with the injection molding head on the injection molding plate, the screw feeder is waited for quantitative feeding, which will squeeze the liquid polypropylene raw material, which is quantitatively extruded from the injection molding head and introduced into the docking mold, so that the hollow cylindrical bottle body can be quickly shaped. After driving the first conveying frame to be introduced into the interior of the shaping bin, the electric push rod is driven to push the sealing table to dock with the two sets of shaping molds, and the sealing blocks on the sealing table are waited to fit into the sealing grooves at the tops of the two sets of shaping molds. At the same time, the external boosting equipment conveys air pressure to the boosting pipes located inside the two sets of shaping molds, so that the hollow cylindrical bottle body is continuously expanded until it fits on the inner walls of the two sets of shaping molds. Finally, after waiting for the two sets of shaping molds to be opened, the bottle body can be efficiently and quickly formed. Compared with the conventional injection blow molding process, the time for deburring the bottle body is greatly reduced.

[0019] 2. The present invention is provided with a fitting block at the other end of one group of cooling grooves, and a fitting groove is provided at the other end of another group of cooling grooves. When the two groups of second manipulators are driven to control the docking of the two groups of shaping molds, the fitting block on one group of shaping molds will fit with the fitting groove on the other group of shaping molds, so that the two groups of shaping molds can be quickly positioned, and the sealing of the two groups of shaping molds after docking can be further enhanced. At the same time, after the coolant is injected into the connector installed at one end of the cooling groove, it will be circulated and introduced into the inner cavity of the two groups of shaping molds and discharged from the connector installed in the other group of cooling grooves. The two groups of shaping molds can be cooled efficiently and quickly, and the shaping of the bottle bodies inside the two groups of shaping molds can be completed, ensuring that the shaped bottles can be quickly dropped from the two groups of shaping molds. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0021] Figure 1 It is a front view of the present invention;

[0022] Figure 2 It is a schematic diagram of the structure of the injection molding plate of the present invention;

[0023] Figure 3 It is a schematic diagram of the structural shaping mold of the present invention;

[0024] Figure 4 It is a schematic diagram of the sealing platform structure of the present invention;

[0025] In the figure: 1. injection molding machine; 11. barrel; 12. screw feeder; 13. processing chamber; 14. heating barrel; 15. loading platform; 2. injection molding plate; 21. cavity; 22. injection molding head; 23. docking plate; 24. docking mold; 3. first conveyor rack; 31. shaping chamber; 32. electric push rod; 33. second conveyor rack; 34. preheating chamber; 4. sealing table; 41. sealing block; 42. pressure sensor; 43. booster pipe; 44. shaping mold; 45. sealing groove; 46. mold groove; 5. cooling groove; 51. fitting block; 52. fitting groove; 53. connector; 54. air guide pipe; 55. air hole. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0027] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0028] Example 1: See Figure 1-4 A rapid shaping plastic preform injection molding machine comprises an injection molding machine 1, a barrel 11 is fixedly installed on one side of the injection molding machine 1, a screw feeder 12 is connected and installed at the bottom of the barrel 11, a processing chamber 13 is connected and installed at the other end of the screw feeder 12, a preforming mechanism is installed inside the processing chamber 13, and high-temperature liquid polypropylene can be processed into a hollow cylindrical bottle body through the preforming mechanism inside the processing chamber 13, the preforming mechanism comprises an injection molding plate 2 fixedly installed on one side of the processing chamber 13, a cavity 21 is opened inside the injection molding plate 2, a plurality of groups of injection molding heads 22 distributed equidistantly are connected and installed on one side of the cavity 21, a docking plate 23 installed on the other side of the processing chamber 13, and a plurality of groups of docking molds 24 distributed equidistantly are fixedly installed on one side of the docking plate 23, a side wall of the docking plate 23 is fixedly installed with a first manipulator, the injection molding plate 2 is connected and installed with one end of the screw feeder 12, and a plurality of groups of docking molds 24 correspond to each group of injection molding heads 22;

[0029] A first conveying rack 3 is fixedly installed on one side of the processing warehouse 13, and a shaping warehouse 31 is fixedly installed on the other end of the first conveying rack 3. A shaping mechanism is installed inside the shaping warehouse 31. Through the shaping mechanism inside the shaping warehouse 31, the hollow cylindrical plastic can be processed into a bottle embryo, and the shaping is completed efficiently and quickly. The shaping mechanism includes an electric push rod 32 fixedly installed on one side of the top of the shaping warehouse 31, a sealing platform 4 fixedly installed on the other end of the electric push rod 32, a sealing block 41 fixedly installed on the outer side of the bottom of the sealing platform 4, a pressure sensor 42 fixedly installed on the bottom of the sealing block 41, a booster pipe 43 fixedly installed in the middle of the bottom of the sealing platform 4, shaping molds 44 installed on both sides of the shaping warehouse 31, sealing grooves 45 are opened on the outer sides of the tops of two groups of shaping molds 44, and mold grooves 46 are opened in the middle of the two groups of shaping molds 44. Second manipulators are fixedly installed on the side walls of the two groups of shaping molds 44. The two groups of mold grooves 46 correspond to the booster pipe 43, and the two groups of sealing grooves 45 correspond to the sealing block 41.

[0030] It should be noted that, first, through the combination of the preforming mechanism and the shaping mechanism, the operator moves a large amount of granular polypropylene raw materials to the loading platform 15 by climbing the ladder, and pours them into the barrel 11, and synchronously drives the spiral feeder 12 and the heating wire inside the heating barrel 14, which can not only push the polypropylene raw materials into the processing chamber 13, but also wait for the heating barrel 14 to heat the spiral feeder 12, and then process the granular polypropylene raw materials into liquid state, and inject them into the injection molding plate 2 inside the processing chamber 13, and then drive the first manipulator inside the processing chamber 13 to push the docking mold 24 on the docking plate 23 to dock with the injection molding head 22 on the injection molding plate 2, and then wait for the first manipulator inside the processing chamber 13 to drive ... After the screw feeder 12 performs quantitative feeding, the liquid polypropylene raw material will be squeezed out, and the quantitative amount of polypropylene will be extruded from the injection head 22 and introduced into the docking mold 24. After the hollow cylindrical bottle body falls off from the docking mold 24 and is introduced into the molding bin 31 from the first conveyor rack 3, the two sets of second manipulators in the molding bin 31 can be driven to push the two sets of molding molds 44 to firmly clamp the hollow cylindrical bottle body. The electric push rod 32 is driven to push the sealing table 4 to dock with the two sets of molding molds 44, and the sealing block 41 on the sealing table 4 is waited to fit into the sealing groove 45 at the top of the two sets of molding molds 44. The pressure sensor 42 at the bottom of the sealing block 41 will be pressed. The pressure sensor 42 under pressure will transmit the signal to the control processor, which controls the external boosting equipment to transmit air pressure to the boosting pipe 43 located inside the two sets of shaping molds 44, so as to continuously expand the hollow cylindrical bottle body until it fits on the inner wall of the two sets of shaping molds 44. Finally, after the two sets of shaping molds 44 are opened, the bottle body can be formed efficiently and quickly. Compared with the conventional injection blow molding process, the time for deburring the bottle body is greatly reduced. At the same time, a fitting block 51 is installed at the other end of one set of cooling grooves 5, and a fitting groove 52 is opened at the other end of the other set of cooling grooves 5. When the two sets of second manipulators are driven to control the two sets of shaping molds 44, the two sets of When the molding dies 44 are docked, the fitting blocks 51 on one set of molding dies 44 will fit with the fitting grooves 52 on the other set of molding dies 44, so that the two sets of molding dies 44 can be quickly positioned, and the sealing of the two sets of molding dies 44 after docking can be further enhanced. At the same time, after the coolant is injected into the connector 53 installed at one end of the cooling groove 5, it will be circulated into the inner cavity of the two sets of molding dies 44 and discharged from the connector 53 installed in the other set of cooling grooves 5, so that the two sets of molding dies 44 can be cooled efficiently and quickly, and the molding of the bottle bodies inside the two sets of molding dies 44 can be completed, ensuring that the molded bottles can quickly fall off from the two sets of molding dies 44.

[0031] For details, see Figure 1-4A loading platform 15 is fixedly installed on one side of the injection molding machine 1. The top of the loading platform 15 corresponds to the top of the barrel 11. A ladder is fixedly installed on one side of the loading platform 15. The operator moves a large amount of granular polypropylene raw materials to the loading platform 15 through the ladder. With the top of the loading platform 15 corresponding to the top of the barrel 11, a large amount of granular polypropylene raw materials can be poured into the barrel 11.

[0032] For further information, see Figure 1-4 A heating cylinder 14 is fixedly installed on the side wall of the screw feeder 12, and a constant temperature heating wire is fixedly installed on the inner wall of the heating cylinder 14. By driving the screw feeder 12 and the heating wire inside the heating cylinder 14, the granular polypropylene raw material can be processed into liquid and injected into the processing chamber 13 and the injection molding plate 2.

[0033] Further, see Figure 1-4 A preheating bin 34 is connected to one side of the inner cavity of the shaping bin 31, and the preheating bin 34 is connected to one end of the first conveying rack 3. When the first conveying rack 3 moves the hollow cylindrical bottle body to the inside of the preheating bin 34, the hollow cylindrical bottle body is heated to one hundred and fifteen degrees Celsius, which can soften the hollow cylindrical bottle body and facilitate the expansion of the hollow cylindrical bottle body into the shaping mold 44.

[0034] It is worth noting that see Figure 1-4 A second conveying rack 33 is fixedly installed at the discharge end of the shaping bin 31. The upper ports of the first conveying rack 3 and the second conveying rack 33 correspond to the ports of the bottle body. The hollow cylindrical bottle body and the formed bottle body can be conveyed respectively through the first conveying rack 3 and the second conveying rack 33.

[0035] It is worth noting that see Figure 1-4 The inner sides of the two sets of shaping molds 44 are provided with cooling grooves 5, one end of the two sets of cooling grooves 5 are connected and installed with connectors 53, the other end of one set of cooling grooves 5 is connected and installed with a fitting block 51, and the other end of the other set of cooling grooves 5 is provided with a fitting groove 52, the fitting block 51 and the fitting groove 52 correspond to each other, when the two sets of second manipulators are driven to control the two sets of shaping molds 44 to dock, the fitting block 51 on one set of shaping molds 44 will fit with the fitting groove 52 on the other set of shaping molds 44, The two groups of shaping molds 44 can be positioned quickly, and the sealing of the two groups of shaping molds 44 after docking can be further enhanced. At the same time, after the coolant is injected into the connector 53 installed at one end of the cooling groove 5, it will be circulated into the inner cavity of the two groups of shaping molds 44 and discharged from the connector 53 installed in the other group of cooling grooves 5. The two groups of shaping molds 44 can be cooled efficiently and quickly, and the shaping of the bottle bodies inside the two groups of shaping molds 44 can be completed, ensuring that the shaped bottle bodies can quickly fall off from the two groups of shaping molds 44.

[0036] It is worth mentioning that see Figure 1-4An air guide pipe 54 is installed on the top of the boosting pipe 43, and the guide pipe passes through the sealing platform 4 and is connected to the boosting equipment. A plurality of groups of equidistantly distributed air holes 55 are provided on the side wall of the boosting pipe 43. When the boosting equipment is driven to deliver air pressure to the boosting pipe 43, the plurality of groups of equidistantly distributed air holes 55 are provided on the side wall of the boosting pipe 43 to ensure that the inner wall of the hollow cylindrical bottle body is evenly pressurized and stably molded on the molding mold.

[0037] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the attached claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0038] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A rapid shaping plastic preform injection molding machine, comprising an injection molding machine (1), characterized in that: A barrel (11) is fixedly mounted on one side of the injection molding machine (1), a screw feeder (12) is connected to and mounted on the bottom of the barrel (11), and a processing chamber (13) is connected to and mounted on the other end of the screw feeder (12). A preforming mechanism is provided inside the processing chamber (13), and high-temperature liquid polypropylene can be processed into a hollow cylindrical bottle body through the preforming mechanism inside the processing chamber (13); A first conveying frame (3) is fixedly mounted on one side of the processing chamber (13), a shaping chamber (31) is fixedly mounted on the other end of the first conveying frame (3), a shaping mechanism is installed inside the shaping chamber (31), and hollow cylindrical plastic can be processed into bottle preforms through the shaping mechanism inside the shaping chamber (31), thereby completing shaping efficiently and quickly.

2. A rapid shaping plastic preform injection molding machine according to claim 1, characterized in that: The preforming mechanism comprises an injection molding plate (2) fixedly mounted on one side of the processing chamber (13), a cavity (21) is opened inside the injection molding plate (2), a plurality of groups of injection molding heads (22) are connected and installed on one side of the cavity (21), a docking plate (23) is installed on the other side of the processing chamber (13), and a plurality of groups of docking molds (24) are fixedly mounted on one side of the docking plate (23), the side wall of the docking plate (23) is fixedly mounted on the first manipulator, the injection molding plate (2) is connected and installed on one end of the screw feeder (12), and a plurality of groups of docking molds (24) correspond to each group of injection molding heads (22).

3. The rapid shaping plastic preform injection molding machine according to claim 1, characterized in that: The shaping mechanism comprises an electric push rod (32) fixedly mounted on one side of the top of the shaping bin (31), a sealing platform (4) fixedly mounted on the other end of the electric push rod (32), a sealing block (41) fixedly mounted on the outer side of the bottom of the sealing platform (4), a pressure sensor (42) fixedly mounted on the bottom of the sealing block (41), a boost pipe (43) fixedly mounted in the middle of the bottom of the sealing platform (4), shaping molds (44) mounted on both sides inside the shaping bin (31), sealing grooves (45) provided on the outer sides of the tops of two groups of shaping molds (44), and mold grooves (46) provided in the middle of the two groups of shaping molds (44); second manipulators are fixedly mounted on the side walls of the two groups of shaping molds (44); the two groups of mold grooves (46) correspond to the boost pipe (43), and the two groups of sealing grooves (45) correspond to the sealing block (41).

4. The rapid shaping plastic preform injection molding machine according to claim 1, characterized in that: A heating cylinder (14) is fixedly mounted on the side wall of the screw feeder (12), and a constant-temperature heating wire is fixedly mounted on the inner wall of the heating cylinder (14).

5. The rapid shaping plastic preform injection molding machine according to claim 1, characterized in that: A loading platform (15) is fixedly mounted on one side of the injection molding machine (1), the top of the loading platform (15) corresponds to the top of the barrel (11), and a ladder is fixedly mounted on one side of the loading platform (15).

6. The rapid shaping plastic preform injection molding machine according to claim 1, characterized in that: A preheating bin (34) is installed in communication with one side of the inner cavity of the shaping bin (31), and the preheating bin (34) is installed in communication with one end of the first conveying frame (3).

7. The rapid shaping plastic preform injection molding machine according to claim 1, characterized in that: A second conveying frame (33) is fixedly mounted on the discharge end of the shaping bin (31), and ports on the first conveying frame (3) and the second conveying frame (33) correspond to ports on the bottle bodies.

8. The rapid shaping plastic preform injection molding machine according to claim 3, characterized in that: The inner sides of the two groups of shaping dies (44) are both provided with cooling grooves (5), and one end of the two groups of cooling grooves (5) is connected and a connector (53) is installed.

9. The rapid shaping plastic preform injection molding machine according to claim 3, characterized in that: A fitting block (51) is connected and installed at the other end of one group of cooling grooves (5), and a fitting groove (52) is opened at the other end of another group of cooling grooves (5), and the fitting block (51) and the fitting groove (52) correspond to each other.

10. The rapid shaping plastic preform injection molding machine according to claim 3, characterized in that: The top of the boosting pipe (43) is connected to an air guide pipe (54), which passes through the sealing platform (4) and is connected to the boosting equipment. The side wall of the boosting pipe (43) is provided with a plurality of groups of equidistantly distributed air holes (55).

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