Vertical injection molding machine

Abstract

The utility model discloses a vertical injection molding machine which comprises a screw injection molding module and a plurality of bottle preform forming molds, the screw injection molding module is provided with a plurality of injection molding ends which are used for tightly jacking the multiple pairs of bottle preform forming molds one by one, and the screw injection molding module is used for heating and plasticizing a plastic material entering the screw injection molding module into a plasticizing flow in a viscous flow state, so that the plasticizing flow is respectively injected into the multiple pairs of bottle preform forming molds which are tightly jacked one by one through the multiple injection molding ends of the screw injection molding module; and the bottle preform forming mold is used for forming the plasticized flow injected into the bottle preform forming mold into a bottle preform. According to the vertical injection molding machine disclosed by the utility model, the structure of the whole plastic bottle production line can be effectively simplified, so that the production cost is greatly reduced, and the required mounting space is reduced; and on the other hand, in the novel injection molding machine, injection molding can be carried out on a plurality of bottle blank forming molds at the same time, or injection molding can be carried out on the plurality of bottle blank forming molds in sequence according to needs, so that continuous injection molding of the whole plastic bottle production line is achieved, and then multi-batch continuous efficient production is achieved.

Description

Technical Field

[0001] This utility model relates to the field of plastic bottle production technology, and in particular, to a vertical injection molding machine. Background Technology

[0002] Plastic bottles are a common type of container with a very large demand and a wide range of applications, such as food and beverage containers, medical containers, medicine containers, and condiment containers. There are two production processes for plastic bottles (commonly used in the early stages of industry development, where the bottles are first made and then stored for later use as needed; bottle preparation and use are separate, hence the two-step process) and one-step process (bottle preparation and use are on the same production line).

[0003] Existing vertical injection molding machines are conventional top-and-bottom type machines, with one injection screw and one set of preform molding dies inside each machine, forming a one-to-one injection molding process. To improve production efficiency, if multiple sets of preform molding dies are required, then multiple injection molding machines are needed, significantly increasing production costs and requiring substantial installation space. Utility Model Content

[0004] This utility model provides a vertical injection molding machine to solve the technical problem that existing vertical injection molding machines cannot perform injection molding of multiple molds at the same time, resulting in low production efficiency and inability to meet the subsequent high-efficiency production requirements.

[0005] The technical solution adopted in this utility model is as follows:

[0006] A vertical injection molding machine includes: a screw injection module and multiple preform forming molds; the screw injection module has multiple injection ends for clamping with each of the multiple preform forming molds; the screw injection module heats and plasticizes the plastic material entering it into a viscous flow state, and then injects the plastic flow through its multiple injection ends into the clamped multiple preform forming molds; the preform forming molds are used to shape the injected plastic flow into preforms.

[0007] Furthermore, multiple preform forming molds are arranged sequentially along the width of the frame, and each preform forming mold is an upper and lower combination mold; the screw injection module is located at the same end of the multiple preform forming molds.

[0008] Furthermore, the screw injection molding module includes multiple sets of screw plasticizing components and corresponding multiple injection molding tubes; the screw plasticizing components are used to push the plastic material into them forward, and heat the plastic material during the pushing process to plasticize it into a plasticized flow; the inlet ends of the multiple injection molding tubes are connected one-to-one to the outlet ends of the multiple sets of screw plasticizing components, and the outlet ends of the multiple injection molding tubes form multiple injection ends for correspondingly clamping multiple preform molding molds.

[0009] Furthermore, multiple sets of screw plasticizing components are arranged in parallel and spaced apart in sequence; each set of screw plasticizing components includes a hopper, a barrel and a screw pushing mechanism connected in sequence, as well as a heating component for heating and plasticizing the plastic material in the screw pushing mechanism.

[0010] Furthermore, the injection molding fitting includes an injection pipe connected to the outlet end of the corresponding screw plasticizing component, a glue injection barrel connected to the injection pipe, and a switch valve disposed in the injection pipe, wherein the glue outlet end of the glue injection barrel is pressed against the corresponding preform molding mold.

[0011] Furthermore, the screw injection molding module includes a set of screw plasticizing components and a flow-diverting injection component; the screw plasticizing component is used to push the plastic material into it forward and heat the plastic material during the pushing process to plasticize it into a plastic flow; the inlet end of the flow-diverting injection component is connected to the outlet end of the screw plasticizing component, and its opposite end has multiple injection ends for respectively clamping multiple preform molding dies, so that the plastic flow is injected into each preform molding die in sequence, or the plastic flow is injected into multiple preform molding dies simultaneously or sequentially.

[0012] Furthermore, the flow-diverting injection molding component includes a flow-diverting pipe network, multiple sets of injection barrels corresponding to multiple preform molding dies, and a control component for controlling the connection and disconnection between the flow-diverting pipe network and the injection barrels; the inlet end of the flow-diverting pipe network is connected to the outlet end of the screw plasticizing component, and the multiple outlet ends of the flow-diverting pipe network are respectively connected to multiple injection barrels, and the outlet ends of the multiple injection barrels form multiple injection ends; the control component is located within the flow-diverting pipe network.

[0013] Furthermore, the injection cylinder includes a hollow cylindrical body with one end closed, an injection nozzle connected to the open end of the cylinder body, and a push rod slidably disposed in the inner cavity of the cylinder body along the axial direction; the side wall of the cylinder body is connected to an outlet end corresponding to the diversion pipe network, and the injection end of the injection nozzle is pressed against the corresponding preform molding mold; the force-bearing end of the push rod extends axially out of the cylinder body to push the plasticized flow entering the cylinder body into the preform molding mold under the action of external force.

[0014] Furthermore, the number of preform molding molds is two sets, and the distribution network includes a main distribution pipe and two branch distribution pipes; the inlet end of the main distribution pipe is connected to the outlet end of the screw plasticizing component, and its opposite outlet ends are respectively connected to the two branch distribution pipes, and the outlet ends of the two branch distribution pipes are respectively connected to two injection cylinders; the control component includes a three-way valve set at the connection between the main distribution pipe and the two branch distribution pipes, or the control component includes on / off valves set in the two branch distribution pipes.

[0015] Furthermore, the number of preform molding dies is at least three, and the distribution network includes a main distribution pipe and at least three branch distribution pipes; the inlet end of the main distribution pipe is connected to the outlet end of the screw plasticizing component, and its opposite outlet ends are respectively connected to each branch distribution pipe, and the outlet end of each branch distribution pipe is connected to the corresponding injection cylinder; the control component includes multiple switching valves respectively disposed in each branch distribution pipe.

[0016] This utility model has the following beneficial effects:

[0017] This utility model discloses a vertical injection molding machine, which includes a screw injection module and multiple preform forming molds. The screw injection module has multiple injection ends, each corresponding to and clamping the multiple preform forming molds. This allows for simultaneous injection molding of one or more preform forming molds, or sequential injection molding of multiple preform forming molds in a specific order. Regardless of the injection method used, this vertical injection molding machine can simultaneously perform injection molding and preform formation of multiple preform forming molds. Compared to existing technologies where each injection screw connects to one preform forming mold, this design allows for simultaneous injection molding and preform formation of multiple preform forming molds. This novel vertical injection molding machine employs a one-to-many injection mode where a single screw injection module separately injects multiple preform molding dies. This not only meets the demand for efficient preform production but also effectively simplifies the structure of the entire plastic bottle production line, thereby significantly reducing production costs and the required installation space. Furthermore, this novel injection molding machine can simultaneously inject multiple preform molding dies, or sequentially inject multiple preform molding dies as needed, thus achieving continuous injection molding throughout the entire plastic bottle production line and enabling continuous, efficient production in multiple batches.

[0018] In addition to the objectives, features, and advantages described above, this utility model has other objectives, features, and advantages. The present utility model will now be described in further detail with reference to the figures. Attached Figure Description

[0019] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0020] Figure 1 This is a top view of a preferred embodiment of the vertical injection molding machine of this utility model. Figure 1 ;

[0021] Figure 2 yes Figure 1 A partially enlarged structural diagram;

[0022] Figure 3 This is a top view of a preferred embodiment of the vertical injection molding machine of this utility model. Figure 2 .

[0023] Legend:

[0024] 10. Screw injection molding module; 11. Screw plasticizing component; 111. Screw feeding mechanism;

[0025] 12. Diversion injection molding component; 121. Diversion pipeline; 122. Injection barrel; 1221. Barrel body; 1222. Nozzle; 1223. Push rod; 123. Control component;

[0026] 20. Preform forming mold. Detailed Implementation

[0027] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered below.

[0028] Reference Figure 1 and Figure 3 A preferred embodiment of this utility model provides a vertical injection molding machine, including: a screw injection module 10 and multiple preform forming molds 20; the screw injection module 10 has multiple injection ends for clamping with each of the multiple preform forming molds 20; the screw injection module 10 heats and plasticizes the plastic material entering it into a viscous flow state, and then injects the plastic flow through its multiple injection ends into the clamped multiple preform forming molds 20; the preform forming molds 20 are used to form the injected plastic flow into preforms.

[0029] The vertical injection molding machine of this invention includes a screw injection module 10 and multiple preform forming molds 20. The screw injection module 10 has multiple injection ends, which correspond one-to-one with the multiple preform forming molds 20 to simultaneously inject one or more preform forming molds 20, or to inject multiple preform forming molds 20 sequentially in a certain order. Regardless of the injection method used, the vertical injection molding machine of this invention can simultaneously perform injection and preform forming of multiple preform forming molds 20. Compared with the prior art, where one injection screw connects to one preform forming mold, this invention provides a significant advantage. The mold in this novel vertical injection molding machine is a one-to-many injection mode where a single screw injection module 10 injects multiple preform forming molds 20. This not only meets the needs of efficient preform production but also effectively simplifies the structure of the entire plastic bottle production line, thereby greatly reducing production costs and the required installation space. Furthermore, this novel injection molding machine can simultaneously inject multiple preform forming molds 20, or sequentially inject multiple preform forming molds 20 as needed, thereby achieving continuous injection molding of the entire plastic bottle production line and enabling continuous and efficient production in multiple batches.

[0030] Optionally, such as Figure 1 and Figure 3As shown, multiple preform forming molds 20 are arranged sequentially along the width of the frame, and each preform forming mold 20 is an upper and lower closing mold, and each preform forming mold 20 has at least one set of forming molds to form a row of multiple preforms arranged sequentially. The screw injection module 10 is located at the same end of the multiple preform forming molds 20, so that its multiple injection ends respectively press against the corresponding preform forming mold 20.

[0031] Optionally, in the first embodiment of the screw injection molding module 10, as... Figure 3 As shown, the screw injection molding module 10 includes multiple sets of screw plasticizing components 11 and corresponding multiple injection molding tubes; the screw plasticizing components 11 are used to push the plastic material into them forward, and heat the plastic material during the pushing process to plasticize it into a plastic flow; the inlet ends of the multiple injection molding tubes are connected one-to-one to the outlet ends of the multiple sets of screw plasticizing components 11, and the outlet ends of the multiple injection molding tubes form multiple injection ends for correspondingly clamping multiple preform molding dies 20. In this optional solution, multiple sets of screw plasticizing components 11 are simultaneously arranged within the screw injection molding module 10, and the outlet end of each set of screw plasticizing components 11 is connected to an injection molding pipe. Thus, the outlet ends of the multiple injection molding pipes connected to the multiple sets of screw plasticizing components 11 form multiple injection ends. Therefore, the vertical injection molding machine of this novel type can simultaneously perform injection and preform production of multiple sets of preform forming molds 20, meeting the needs of subsequent high-efficiency production, simplifying the structure of the entire plastic bottle production line, thereby greatly reducing production costs, reducing the required installation space, improving production efficiency, and realizing continuous and efficient production of multiple batches.

[0032] In this optional solution, such as Figure 3 As shown, multiple sets of screw plasticizing components 11 are arranged in parallel and spaced apart in sequence; each set of screw plasticizing components 11 includes a hopper, a barrel and a screw pushing mechanism 111 connected in sequence, and a heating component for heating and plasticizing the plastic material in the screw pushing mechanism 111; in this optional scheme, the structure of the screw plasticizing component 11 can adopt the existing conventional structure, and multiple sets of screw plasticizing components 11 are set at the same time in the design.

[0033] In this optional solution, the injection molding fitting includes an injection pipe connected to the outlet end of the corresponding screw plasticizing component 11, a glue injection barrel connected to the injection pipe, and a switch valve set in the injection pipe. The glue outlet end of the glue injection barrel is pressed against the corresponding preform molding mold 20. The injection molding fitting has a simple structure and is easy to process and manufacture.

[0034] Optionally, in a second embodiment of the screw injection molding module 10, such as Figure 1-2As shown, the screw injection molding module 10 includes a set of screw plasticizing components 11 and flow-diverting injection components 12; the screw plasticizing components 11 are used to push the plastic material into them forward and heat the plastic material during the pushing process to plasticize it into a plastic flow; the inlet end of the flow-diverting injection components 12 is connected to the outlet end of the screw plasticizing components 11, and its opposite ends have multiple injection ends for respectively clamping multiple preform molding dies 20, so that the plastic flow is injected into each preform molding die 20 in sequence, or the plastic flow is injected into multiple preform molding dies 20 simultaneously or sequentially. In this optional solution, a set of screw plasticizing components 11 is connected to a flow-dividing injection molding component 12, which has multiple injection ends. Each injection end presses against a preform forming mold 20, so that the vertical injection molding machine of this novel type also has multiple injection ends, thereby effectively simplifying the structure of the entire plastic bottle production line, reducing production costs, reducing the required installation space, improving production efficiency, and realizing continuous and efficient production of multiple batches.

[0035] In the vertical injection molding machine of this utility model, by setting up the flow-diverting injection molding component 12, a set of screw plasticizing components 11 can respectively correspond to multiple preform molding dies 20 for injection molding, thereby simplifying the overall structure of the production line and reducing the manufacturing cost. On the other hand, when there are multiple preform molding dies 20, by setting up the flow-diverting injection molding component 12, multiple preform molding dies 20 can be injected sequentially, that is, the first preform molding die 20 is injected first, and after the first preform molding die 20 is injected, the second preform molding die 20 is injected, and so on. Alternatively, by setting up the flow-diverting injection molding component 12, multiple preform molding dies 20 can be injected simultaneously or sequentially as needed, realizing continuous injection molding of the injection molding device to achieve continuous and efficient production of multiple batches.

[0036] In this optional solution, the screw plasticizing component 11 includes a hopper, a barrel, and a screw pushing mechanism 111 connected in sequence, as well as a heating component for heating and plasticizing the plastic material in the screw pushing mechanism 111; in this optional solution, the structure of the screw plasticizing component 11 can adopt an existing conventional structure.

[0037] In this optional solution, such as Figure 2As shown, the flow-diverting injection molding component 12 includes a flow-diverting network 121, multiple sets of injection barrels 122 corresponding to multiple preform molding dies 20, and a control component 123 for controlling the connection and disconnection between the flow-diverting network 121 and the injection barrels 122. The inlet end of the flow-diverting network 121 is connected to the outlet end of the screw plasticizing component 11, and the multiple outlet ends of the flow-diverting network 121 are respectively connected to multiple injection barrels 122. The outlet ends of the multiple injection barrels 122 form multiple injection ends, and the outlet ends of the flow-diverting network 121, the injection barrels 122, and the preform molding dies 20 form a one-to-one correspondence. The control component 123 is disposed within the flow-diverting network 121.

[0038] In this optional solution, such as Figure 2 As shown, the injection barrel 122 includes a hollow cylindrical body 1221 closed at one end, an injection nozzle 1222 connected to the open end of the barrel body 1221, and a push rod 1223 slidably disposed in the inner cavity of the barrel body 1221 along the axial direction of the barrel body 1221; the side wall of the barrel body 1221 is connected to one outlet end of the diversion pipe network 121, and the injection end of the injection nozzle 1222 is pressed against the corresponding preform molding mold 20; the force-bearing end of the push rod 1223 extends axially out of the barrel body 1221 to push the plasticized flow entering the barrel body 1221 into the preform molding mold 20 under the action of external force. During operation, the plasticized flow in the screw plasticizing component 11 is pushed into the distribution network 121. Then, the control component 123, which controls the outlet end of the distribution network 121 to connect with the corresponding injection barrel 122, is activated to connect the distribution network 121 with the corresponding injection barrel 122. The plasticized flow enters the barrel body 1221 of the injection barrel 122 from the distribution network 121. After the amount of plasticized flow in the barrel body 1221 reaches the design requirement, the control component 123 disconnects the distribution network 121 from the barrel body 1221, and the plasticized flow stops injecting into the injection barrel 122. At this time, the distribution network 121 is connected to another injection barrel 122 under the action of the control component 123, thereby realizing continuous injection molding. After the push rod 1223 stops injection in the barrel body 1221, it is activated under the action of the drive component to push the plasticized flow in the barrel body 1221 into the connected preform molding mold 20. In this optional solution, the plasticized flow in the screw plasticizing component 11 is not directly injected into the preform molding mold 20, but is first injected into the injection barrel 122 for buffering, and then injected into the preform molding mold 20 by the injection barrel 122. By buffering the plasticized flow through the injection barrel 122, time is not only reserved for the subsequent molding and demolding operations of the preform molding mold 20, but also the screw injection module 10 can achieve continuous injection, thereby improving production efficiency and preparing for subsequent multi-batch continuous and efficient production.

[0039] In this optional solution, the first embodiment of the diversion network 121 is as follows: Figure 2As shown, when there are two sets of preform molding molds 20, the distribution network 121 includes a main distribution pipe and two branch distribution pipes. The inlet end of the main distribution pipe is connected to the outlet end of the screw plasticizing component 11, and its opposite outlet ends are respectively connected to the two branch distribution pipes. The outlet ends of the two branch distribution pipes are respectively connected to two injection cylinders 122. The control component 123 includes a three-way valve disposed at the connection between the main distribution pipe and the two branch distribution pipes, or the control component 123 includes on / off valves disposed in the two branch distribution pipes. The distribution network 121 has a simple structure and is easy to process and manufacture.

[0040] In this optional embodiment, the diversion network 121 (not shown in the figure) includes a main diversion pipe and at least three branch diversion pipes when the number of preform molding dies 20 is at least three. The inlet end of the main diversion pipe is connected to the outlet end of the screw plasticizing component 11, and its opposite outlet ends are respectively connected to each branch diversion pipe. The outlet end of each branch diversion pipe is connected to the corresponding injection barrel 122. The control component 123 includes multiple switching valves disposed in each branch diversion pipe. When the number of preform molding dies 20 is large, two or more sets of screw injection modules 10 can be set to meet the injection requirements of each preform molding die 20.

[0041] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A vertical injection molding machine, characterized in that, include: Screw injection molding module (10) and multiple preform molding dies (20); The screw injection module (10) has multiple injection ends for clamping with multiple preform molding dies (20). The screw injection module (10) heats and plasticizes the plastic material entering it into a viscous flow state, and then injects the plastic flow into the clamped preform molding dies (20) through its multiple injection ends. The preform molding dies (20) are used to shape the injected plastic flow into a preform.

2. The vertical injection molding machine according to claim 1, characterized in that, Multiple preform forming molds (20) are arranged sequentially along the width of the frame, and each preform forming mold (20) is an upper and lower closing mold. The screw injection module (10) is located at the same end of multiple preform molding dies (20).

3. The vertical injection molding machine according to claim 1, characterized in that, The screw injection molding module (10) includes multiple sets of screw plasticizing components (11) and corresponding multiple injection molding pipes; The screw plasticizing component (11) is used to push the plastic material into it forward and heat the plastic material during the pushing process to plasticize it into a plasticized flow; The inlet ends of multiple injection molding pipes are connected one-to-one to the outlet ends of multiple sets of screw plasticizing components (11), and the outlet ends of multiple injection molding pipes form multiple injection ends for one-to-one clamping of multiple preform molding molds (20).

4. The vertical injection molding machine according to claim 3, characterized in that, Multiple sets of screw plasticizing components (11) are arranged in parallel intervals in sequence; Each screw plasticizing component (11) includes a hopper, a barrel and a screw pushing mechanism (111) connected in sequence, and a heating component for heating and plasticizing the plastic material in the screw pushing mechanism (111).

5. The vertical injection molding machine according to claim 3, characterized in that, The injection molding fitting includes an injection pipe connected to the outlet end of the corresponding screw plasticizing component (11), a glue injection barrel connected to the injection pipe, and a switch valve set in the injection pipe. The glue outlet end of the glue injection barrel is pressed against the corresponding preform molding mold (20).

6. The vertical injection molding machine according to claim 1, characterized in that, The screw injection molding module (10) includes a set of screw plasticizing components (11) and a flow-diverting injection molding component (12); The screw plasticizing component (11) is used to push the plastic material into it forward and heat the plastic material during the pushing process to plasticize it into a plasticized flow; The inlet end of the split injection molding component (12) is connected to the outlet end of the screw plasticizing component (11), and the opposite ends have multiple injection ends for respectively clamping multiple preform molding dies (20) so that the plasticizing flow is injected into each preform molding die (20) in sequence, or the plasticizing flow is injected into multiple preform molding dies (20) simultaneously or sequentially.

7. The vertical injection molding machine according to claim 6, characterized in that, The flow-diverting injection molding component (12) includes a flow-diverting network (121), multiple sets of injection barrels (122) corresponding to multiple preform molding dies (20), and a control component (123) for controlling the connection and disconnection between the flow-diverting network (121) and the injection barrels (122); The inlet end of the branch pipe network (121) is connected to the outlet end of the screw plasticizing component (11), and the multiple outlet ends of the branch pipe network (121) are respectively connected to multiple injection barrels (122), and the outlet ends of the multiple injection barrels (122) form multiple injection ends. The control component (123) is located within the diversion network (121).

8. The vertical injection molding machine according to claim 7, characterized in that, The injection tube (122) includes a hollow cylindrical body (1221) that is closed at one end, an injection nozzle (1222) connected to the open end of the body (1221), and a push rod (1223) that is slidably disposed in the inner cavity of the body (1221) along the axial direction of the body (1221). The side wall of the cylinder body (1221) is connected to one outlet end of the branch pipe network (121), and the injection end of the nozzle (1222) is pressed against the corresponding preform molding mold (20). The force-bearing end of the push rod (1223) extends axially out of the cylinder body (1221) to push the plasticized flow entering the cylinder body (1221) into the preform molding die (20) under the action of external force.

9. The vertical injection molding machine according to claim 7, characterized in that, The number of preform forming molds (20) is two, and the branch pipe network (121) includes a main branch pipe and two branch pipes; The inlet end of the main branch pipe is connected to the outlet end of the screw plasticizing component (11), and the opposite outlet ends are connected to two branch pipes respectively. The outlet ends of the two branch pipes are connected to two injection cylinders (122) respectively. The control assembly (123) includes a three-way valve located at the junction of the main branch pipe and the two branch pipes, or the control assembly (123) includes on / off valves located in the two branch pipes.

10. The vertical injection molding machine according to claim 7, characterized in that, The number of preform forming molds (20) is at least three, and the branch network (121) includes a main branch and at least three branch branches; The inlet end of the main branch pipe is connected to the outlet end of the screw plasticizing component (11), and the opposite outlet ends are connected to each branch pipe respectively. The outlet end of each branch pipe is connected to the corresponding injection cylinder (122). The control assembly (123) includes multiple switching valves located in each branch pipe.

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