Injection molding and blank discharging all-in-one machine

Abstract

The utility model discloses an injection molding and blank discharging all-in-one machine which comprises a vertical injection molding machine, a handover station positioned at the downstream of the vertical injection molding machine, and a linear transfer device which is arranged between the vertical injection molding machine and the handover station in a linear reciprocating sliding manner, the vertical injection molding machine comprises a screw injection molding module and a plurality of bottle preform forming molds, and the screw injection molding module is provided with a plurality of injection molding ends used for tightly jacking the bottle preform forming molds one by one; the linear transfer device is arranged in an opening and closing mode in the transverse width direction of the machine frame so as to be used for containing, receiving and preserving heat of bottle blank columns which freely fall off when the bottle blank forming mold is demolded and are arranged in columns, and the bottle blank columns are transferred to a transfer station from the bottle blank forming mold along a straight line. According to the novel injection molding and blank discharging all-in-one machine, the overall structure of a production line can be simplified, the preparation cost can be reduced, continuous injection molding of the injection molding device can be achieved, preparation is made for seamless connection of subsequent injection molding and blank taking steps of a bottle blank forming mold, and 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 an integrated injection molding and preform extrusion 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] In recent years, one-step methods have gained increasing market acceptance. For example, Chinese patent application number CN202210193687.X discloses a linear injection-blowing, filling, and sealing integrated plastic bottle packaging device. This patent (CN202210193687.X) includes, as shown in the appendix... Figure 1 As shown, a bottle receiving mechanism is provided, consisting of a transition slide rail 105, a transition mold 106, a lifting power device 107, and a horizontal power device 108, and an attached... Figure 1 The bottle-retrieving mechanism, which is not shown in the diagram, is activated during operation. The bottle-receiving mechanism moves the transition mold 106 laterally between the preform mold assembly 101 and the Haver mold 103. When the Haver mold 103 rises to a certain height and opens, the preform inside automatically falls into the corresponding transition mold 106 below. The transition mold 106 then moves the preform laterally back to the central axis position of the machine. At this point, the bottle-retrieving mechanism first lowers to grip the preform and then moves upwards to a certain height before stopping, removing the preform from the transition mold 106. Finally, the transfer mechanism moves laterally to grip the preform on the bottle-retrieving mechanism and then moves longitudinally to the next process.

[0004] In this patent, since the transition mold 106 cannot be opened, a bottle-removing mechanism is required to remove the preform from the transition mold 106. The addition of the bottle-removing mechanism not only makes the device more complex and increases manufacturing costs, but also the process of first lowering the bottle to remove it and then raising it to a certain height before stopping and waiting results in the preform being exposed to the air for a longer time, resulting in greater heat loss. Additional heating is required before subsequent pre-blowing or formal blowing, which not only consumes energy and increases costs, but also seriously affects work efficiency.

[0005] On the other hand, the structural design of the bottle receiving and unloading mechanisms makes the operation of the device complex and involves many steps. This not only makes it difficult to seamlessly connect the injection molding and unloading steps of the preform forming mold, resulting in long working gaps, but also prevents subsequent processes from being connected for continuous and efficient multi-batch production. Furthermore, existing vertical injection molding machines are conventional top-and-bottom type injection molding machines, with one injection screw and one set of preform forming molds within a single machine, forming a one-to-one injection molding process. If multiple sets of preform forming molds are required to improve production efficiency, then multiple corresponding injection molding machines are needed, which greatly increases production costs and requires a large installation space. Utility Model Content

[0006] This utility model provides an integrated injection molding and preform removal machine to solve the technical problems of existing equipment, such as complex production line structure, high production cost, large installation space required, and inability to achieve seamless connection between injection molding and preform removal steps of bottle preform forming mold.

[0007] The technical solutions adopted in this utility model are as follows:

[0008] An integrated injection molding and preform ejection machine includes: a vertical injection molding machine, a transfer station located downstream of the vertical injection molding machine, and a linear transfer device that slides back and forth along a straight line between the vertical injection molding machine and the transfer station; the vertical injection molding machine includes a screw injection module and multiple preform molding dies, the screw injection module having multiple injection ends for clamping with each of the multiple preform molding dies; the linear transfer device is configured to open and close along the transverse width of the frame to receive and keep warm the rows of preforms that fall freely from the preform molding dies when ejecting, and to transfer the rows of preforms from the preform molding dies to the transfer station along a straight line.

[0009] 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, with each preform forming mold corresponding to a set of linear transfer devices; the screw injection module is located at the same end of the multiple preform forming molds.

[0010] 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.

[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 linear transfer device includes a support rail for connection to the frame, a heat-insulating demolding device slidably supported on the support rail, and a longitudinal drive mechanism for driving the heat-insulating demolding device. The heat-insulating demolding device is laterally opened and closed with the longitudinal line extending along its sliding direction as the opening and closing line, and then opens along the lateral width direction to allow a row of preforms arranged in rows on the preform forming mold to fall downward into it, and closes relative to each other along the lateral width direction to clamp and keep the fallen preforms warm. The longitudinal drive mechanism is arranged on the support rail and connected to the heat-insulating demolding device to drive the heat-insulating demolding device to slide back and forth between the preform forming mold and the transfer station along the arrangement direction of the preforms.

[0014] Furthermore, the heat preservation and demolding device includes a pull plate assembly slidably connected to the support rail and connected to the longitudinal movement drive mechanism, a clamping plate assembly extending longitudinally, and a transverse movement drive mechanism disposed on the pull plate assembly and connected to the clamping plate assembly; the clamping plate assembly includes a first clamping plate and a second clamping plate symmetrically arranged about the arrangement line of the bottle preforms, the first clamping plate and the second clamping plate are respectively connected to the transverse movement drive mechanism, so as to relatively close together to clamp and keep the bottle preforms warm, or relatively far apart so that the bottle preforms are conveyed in a straight line along the direction of their arrangement line.

[0015] Furthermore, there are multiple sets of clamping plates, which are arranged sequentially at intervals along the width direction of the pull plate set to correspond to the multiple rows of preforms arranged sequentially at intervals along the width direction on the preform forming mold; multiple first clamping plates of multiple sets of clamping plates are connected by a first connecting rod, and multiple second clamping plates of multiple sets of clamping plates are connected by a second connecting rod; the transverse drive mechanism is connected to the outermost first clamping plate and second clamping plate.

[0016] Furthermore, the heat preservation and demolding device also includes a heating component for heating the clamped preforms, which is disposed within the clamping plate assembly.

[0017] Furthermore, the support rail frame includes multiple linear guide rails arranged at intervals along the width direction of the frame and extending longitudinally, a support plate horizontally arranged below the multiple linear guide rails, and multiple sets of supports connected to the support plate at intervals along the length direction of the support plate. The linear guide rails and the support plate are respectively connected to the frame. The pull plate assembly includes a horizontally arranged pull plate, multiple sets of sliders connected to the lower surface of the pull plate and slidably arranged corresponding to the multiple linear guide rails, and a vertical plate vertically connected to the end of the pull plate. The clamping plate assembly and the transverse movement drive mechanism are respectively arranged on the pull plate. The longitudinal movement drive mechanism includes a lead screw rotatably supported on multiple sets of supports, a drive motor connected to the end of the lead screw, and a nut fitted on the outer circle of the lead screw. The nut is fixed to the vertical plate.

[0018] This utility model has the following beneficial effects:

[0019] 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.

[0020] On the other hand, in this invention, the linear transfer device replaces the existing bottle receiving and bottle picking mechanisms, greatly simplifying the production line structure and reducing manufacturing costs. Furthermore, the linear transfer device has a simple structure and its operation and control process are significantly simpler than the combined operation of the existing bottle receiving and bottle picking mechanisms, resulting in high precision, simple control, and greatly improved production efficiency due to the simplified operation process. Additionally, in the prior art, the bottle picking mechanism exposes the preforms to air for a longer period, leading to significant heat loss. In this new device, the linear transfer device allows the preforms to fall freely into it after demolding, eliminating the need for the existing bottle picking mechanism. This simplifies the overall structure and reduces manufacturing costs. The linear transfer device can also quickly close to clamp the preforms. The preforms are insulated, thus preventing them from being exposed to air for extended periods after demolding. This minimizes the time the preforms are exposed to air and reduces heat loss, potentially eliminating the need for additional heating before pre-blowing or formal blow molding (in existing technologies, due to the prolonged exposure of preforms to air after demolding, most preforms require reheating before pre-blowing or blow molding, depending on the preform material; however, in this application, the short exposure time after demolding means only a very small number of preforms require reheating), reducing energy consumption and costs while improving production efficiency. Furthermore, the linear conveyor system simplifies the preform removal process and shortens the time required, enabling seamless integration between the injection molding and preform removal steps of the preform forming mold, achieving continuous and efficient multi-batch production.

[0021] 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

[0022] 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:

[0023] Figure 1 This is a schematic diagram of the main structure of an existing linear injection blow filling and sealing integrated plastic bottle packaging equipment;

[0024] Figure 2 This is a top view of a preferred embodiment of the injection molding and preform ejection machine of this utility model. Figure 1 ;

[0025] Figure 3 yes Figure 2 Partial sectional view and top view of a vertical injection molding machine Figure 1 ;

[0026] Figure 4 yes Figure 2 A partial front view structural schematic diagram of a medium-sized injection molding machine with preform ejection;

[0027] Figure 5 yes Figure 4 Partial top view of the structure;

[0028] Figure 6 This is a partial top view of a preferred embodiment of the injection molding and preform ejection machine of this utility model. Figure 2 ;

[0029] Figure 7 yes Figure 6 Partial top view of the structure;

[0030] Figure 8 This is a top view of a preferred embodiment of the injection molding and preform ejection machine of this utility model. Figure 3 .

[0031] Legend:

[0032] 100. Injection molding module; 101. Preform mold assembly; 103. Haval mold; 105. Transition slide rail; 106. Transition mold; 107. Lifting power unit; 108. Horizontal power unit;

[0033] 10. Screw injection molding module; 11. Screw plasticizing component; 111. Screw feeding mechanism;

[0034] 12. Diversion injection molding component; 121. Diversion pipeline; 122. Injection barrel; 1221. Barrel body; 1222. Nozzle; 1223. Push rod; 123. Control component;

[0035] 20. Preform forming mold;

[0036] 40. Linear transfer device; 411. Linear guide rail; 412. Support plate; 413. Support; 42. Insulating demolding device; 421. Pulling plate assembly; 422. Clamping plate assembly; 4220. Receiving groove; 4221. First clamping plate; 4222. Second clamping plate; 4223. First connecting rod; 4224. Second connecting rod; 423. Horizontal movement drive mechanism; 424. Heating component; 43. Longitudinal movement drive mechanism; 431. Lead screw; 432. Drive motor; 433. Nut. Detailed Implementation

[0037] 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.

[0038] Reference Figure 2 , Figure 4 and Figure 8 A preferred embodiment of this utility model provides an integrated injection molding and preform ejection machine, comprising: a vertical injection molding machine, a transfer station located downstream of the vertical injection molding machine, and a linear transfer device 40 that is reciprocatingly disposed between the vertical injection molding machine and the transfer station; the vertical injection molding machine includes a screw injection module 10 and multiple preform molding dies 20, the screw injection module 10 having multiple injection ends for clamping with each of the multiple preform molding dies 20; the linear transfer device 40 is configured to open and close along the transverse width of the frame for receiving and keeping warm the rows of preforms that fall freely from the preform molding die 20 when ejecting from the die, and for transferring the rows of preforms from the preform molding die 20 to the transfer station in a straight line.

[0039] In this invention, during operation, the screw injection molding module 10 heats and plasticizes the plastic material into a plasticized flow, which is then injected into the tightly clamped preform forming mold 20 through its injection end. The preform forming mold 20 then starts to produce preforms. After the preforms are prepared, the upper mold drives the preforms arranged longitudinally at intervals to move upwards so that they can be pulled out from the lower mold below. During the upward movement of the preforms by the upper mold, the linear transfer device 40 slides along a straight line to the lower part of the upper mold, and the linear transfer device 40 is slightly opened or not opened at all in the transverse width direction. As the preforms continue to rise, the upper mold opens, and all the preforms in the preforms fall freely downwards into the linear transfer device 40 below. After all the preforms have entered the linear transfer device 40, the linear transfer device 40 clamps the preforms and keeps them warm. Finally, the linear transfer device 40 drives the preforms to slide along a straight line to the handover station, where they await handover between the subsequent bottle conveying device and the linear transfer device 40.

[0040] 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.

[0041] On the other hand, in this invention, the linear transfer device 40 replaces the existing bottle receiving and bottle picking mechanisms, thereby greatly simplifying the production line structure and reducing manufacturing costs. Furthermore, the linear transfer device 40 has a simple structure, and its operation and control process are significantly simpler than the combined operation of the existing bottle receiving and bottle picking mechanisms. This results in high precision, simple control, and greatly improved production efficiency due to the simplified operation process. Additionally, in the prior art, the bottle picking mechanism exposes the preforms to air for a longer period, leading to significant heat loss. In this new device, the linear transfer device 40 allows the preforms to fall freely into it after demolding, eliminating the need for the existing bottle picking mechanism. This simplifies the overall structure and reduces manufacturing costs. Simultaneously, the linear transfer device 40 can quickly close to... Clamping and insulating the preforms prevents them from being exposed to air for extended periods after demolding, minimizing heat loss. Consequently, subsequent preforms may not require additional heating before pre-blowing or formal blow molding (in existing technologies, due to the prolonged exposure of preforms to air after demolding, most preforms require reheating before pre-blowing or blow molding, depending on the preform material; however, in this application, the minimal exposure time after demolding necessitates reheating for only a very small number of preform materials), reducing energy consumption and costs while improving production efficiency. Furthermore, the linear conveyor 40 simplifies the preform ejection operation and reduces time, enabling seamless integration between the injection and preform removal steps of the preform molding mold 20, achieving continuous and efficient multi-batch production.

[0042] Optionally, such as Figure 2 and Figure 8 As 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. Each preform forming mold 20 has at least one set of forming molds to form a row of multiple preforms arranged sequentially. Each set of preform forming molds 20 is provided with a corresponding set of linear conveying devices 40. 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.

[0043] Optionally, in the first embodiment of the screw injection molding module 10, as... Figure 8As 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.

[0044] In this optional solution, such as Figure 8 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.

[0045] 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.

[0046] Optionally, in a second embodiment of the screw injection molding module 10, such as Figure 2-3As 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.

[0047] 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.

[0048] 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.

[0049] In this optional solution, such as Figure 3As 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.

[0050] In this optional solution, such as Figure 3 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.

[0051] In this optional solution, the first embodiment of the diversion network 121 is as follows: Figure 3As 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.

[0052] 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.

[0053] Optionally, such as Figure 4 and Figure 6 As shown, the linear transfer device 40 includes a support rail for connection to the frame, a heat-insulating demolding device 42 slidably supported on the support rail, and a longitudinal drive mechanism 43 for driving the heat-insulating demolding device 42. The heat-insulating demolding device 42 is laterally opened and closed with its longitudinal line extending along its sliding direction as the opening and closing line. It opens in the lateral width direction to allow a row of preforms arranged in the preform forming mold 20 to fall downward into it, and closes relative to each other in the lateral width direction to clamp and keep the fallen preforms warm. The longitudinal drive mechanism 43 is disposed on the support rail and connected to the heat-insulating demolding device 42 to drive the heat-insulating demolding device 42 to reciprocate between the preform forming mold 20 and the transfer station along the arrangement direction of the preforms.

[0054] Furthermore, such as Figure 4 and Figure 6 As shown, the support frame includes multiple linear guide rails 411 arranged at intervals along the width direction of the frame and extending longitudinally, a support plate 412 horizontally arranged below the multiple linear guide rails 411, and multiple sets of supports 413 connected at intervals along the length direction of the support plate 412. The linear guide rails 411 and the support plate 412 are respectively connected to the frame. The heat preservation demolding device 42 is slidably supported on the multiple linear guide rails 411 so as to support and guide and limit its sliding movement through the linear guide rails 411.

[0055] Optionally, such as Figure 6 and Figure 7 As shown, the heat preservation and demolding device 42 includes a pull plate assembly 421 slidably connected to the support rail and connected to the longitudinal movement drive mechanism 43, a clamping plate assembly 422 extending longitudinally, and a transverse movement drive mechanism 423 disposed on the pull plate assembly 421 and connected to the clamping plate assembly 422. The clamping plate assembly 422 includes a first clamping plate 4221 and a second clamping plate 4222 symmetrically arranged about the arrangement line of the bottle preforms. The first clamping plate 4221 and the second clamping plate 4222 are respectively connected to the transverse movement drive mechanism 423 so that they are relatively close to each other to clamp and keep the bottle preforms warm, or relatively far apart so that the bottle preforms are transported in a straight line along their arrangement line. In this optional solution, since the first clamping plate 4221 and the second clamping plate 4222 are symmetrically arranged about the arrangement line of the preform column on the preform forming mold 20, the preform column that falls freely after demolding can still be arranged in the heat preservation demolding device 42 along the original arrangement line direction, which facilitates the subsequent straight conveying of the preform column to the handover station along the arrangement line direction.

[0056] In this optional solution, such as Figure 6 and Figure 7 As shown, the pull plate assembly 421 includes a horizontally arranged pull plate, multiple sets of sliders connected to the lower surface of the pull plate and slidably arranged corresponding to multiple linear guide rails 411, and a vertical plate vertically connected to the end of the pull plate. A clamping plate assembly 422 and a transverse drive mechanism 423 are respectively disposed on the pull plate. Further, as... Figure 6 As shown, the longitudinal drive mechanism 43 includes a lead screw 431 rotatably supported on multiple sets of supports 413, a drive motor 432 connected to the end of the lead screw 431, and a nut 433 fitted on the outer circle of the lead screw 431. The nut 433 is fixed to the upright plate. During operation, the drive motor 432 starts and drives the connected lead screw 431 to rotate. When the lead screw 431 rotates, the nut 433 fitted on its outer circle slides along the length direction of the lead screw 431. Then, through the fixation of the upright plate and the nut 433, the pull plate is synchronously driven to slide on the linear guide rail 411, and finally the clamping plate assembly 422 slides relative to the linear guide rail 411, realizing the longitudinal conveying of the bottle preform.

[0057] In this optional solution, such as Figure 7 As shown, the first clamping plate 4221 and the second clamping plate 4222 have a plurality of recessed receiving grooves arranged sequentially and at intervals along the length direction on their opposing surfaces. Each of the multiple receiving grooves 4220 corresponds one-to-one with a particular preform in the preform row to be clamped, thus stably clamping each preform. In this optional solution, the clamping plate assembly 422 has a simple structure and low manufacturing cost.

[0058] Preferably, not shown in the figure, the first clamping plate 4221 and the second clamping plate 4222 are respectively made of plastic material to avoid rigidly clamping the preform and damaging it, and can also effectively buffer the impact force during the clamping of the preform to protect it. Alternatively, the receiving groove 4220 is coated with a protective coating for protecting the preform, or a protective sheet for protecting the preform is connected to the inner wall surface of the receiving groove 4220. The protective coating or protective sheet functions as a clamping plate assembly made of plastic material, avoiding rigidly clamping the preform and damaging it, and can also effectively buffer the impact force during the clamping of the preform to protect it.

[0059] Optionally, such as Figure 6 and Figure 7 As shown, to improve production efficiency, the preform forming mold 20 can simultaneously produce multiple rows of preforms arranged at intervals along its width direction. In order to match the production capacity of the preform forming mold 20, the number of clamping plate groups 422 in this invention is also set to multiple groups, and the multiple groups of clamping plate groups 422 are arranged at intervals along the width direction of the pull plate group 421 to correspond to the multiple rows of preforms arranged at intervals along the width direction on the preform forming mold 20. In this embodiment, in order to simplify the overall structure and layout of the device and reduce costs and energy consumption, the multiple groups of clamping plate groups 422 are all arranged on the same pull plate group 421 and are driven to slide by a set of longitudinal movement drive mechanisms 43. In other embodiments, each group of clamping plate groups 422 can also be set separately, that is, multiple sets of heat preservation demolding devices 42 are set on the support rail frame and driven to slide by a set or corresponding multiple sets of longitudinal movement drive mechanisms 43. Even multiple independent linear transfer devices can be set directly.

[0060] When multiple clamping plate groups 422 are arranged on the same pull plate group 421, in order to reduce energy consumption and cost, in this optional solution, multiple first clamping plates 4221 of the multiple clamping plate groups 422 are connected by a first connecting rod 4223, and multiple second clamping plates 4222 of the multiple clamping plate groups 422 are connected by a second connecting rod 4224; the transverse drive mechanism 423 is connected to the outermost first clamping plate 4221 and second clamping plate 4222, that is, when only multiple first clamping plates 4221 are connected by the first connecting rod 4223, the transverse drive mechanism 423 may include only one set of drive cylinders, and the drive cylinder is connected to the outermost first clamping plate 4221, thereby... The driving cylinder simultaneously drives multiple sets of first clamping plates 4221 to move laterally relative to multiple sets of fixed second clamping plates 4222 to open the clamping plate group 422; similarly, multiple second clamping plates 4222 can be connected only by the second connecting rod 4224, in which case the transverse drive mechanism 423 can also be equipped with only one set of driving cylinders; or multiple first clamping plates 4221 can be connected into one piece by the first connecting rod 4223, and multiple second clamping plates 4222 can also be connected into one piece by the second connecting rod 4224, in which case the transverse drive mechanism 423 can include two sets of driving cylinders, and the two sets of driving cylinders are respectively connected to the outermost first clamping plate 4221 and the second clamping plate 4222.

[0061] When multiple clamping plate groups 422 are arranged on the same pull plate group 421, in order to reduce energy consumption and cost, in this optional solution, a transverse drive mechanism 423 can also be provided between each pair of adjacent clamping plate groups 422. The transverse drive mechanism 423 is connected to the second clamping plate 4222 and the first clamping plate 4221 on both sides respectively. The transverse drive mechanism 423 includes a set of drive cylinders. The starting cylinder is a bidirectional telescopic cylinder, and its telescopic ends are respectively connected to the second clamping plate 4222 and the first clamping plate 4221 on the corresponding side.

[0062] Preferably, such as Figure 7 As shown, to increase the temperature of the preforms after demolding and minimize subsequent reheating operations, in this preferred embodiment, the heat-insulating demolding device 42 further includes a heating component 424 for heating the clamped preform array. The heating component 424 is disposed within the clamping plate assembly 422. In a specific embodiment of this preferred embodiment, as shown... Figure 7 As shown, the heating assembly 424 includes a heat-insulating pad disposed between the pull plate assembly 421 and the clamping plate assembly 422, and a heating component connected to the heat-insulating pad; the heating component is a heating coil or heating tube extending along the length direction of the clamping plate assembly 422. The heat-insulating pad is used to retain heat and prevent rapid heat loss.

[0063] 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. An integrated injection molding and preform extrusion machine, characterized in that, include: Vertical injection molding machine, a handover station located downstream of the vertical injection molding machine, and a linear transfer device (40) that slides back and forth along a straight line between the vertical injection molding machine and the handover station; The vertical injection molding machine includes a screw injection module (10) and multiple preform molding dies (20). The screw injection module (10) has multiple injection ends for clamping with the multiple preform molding dies (20) one by one. The linear transfer device (40) is set to open and close along the transverse width of the frame to receive and keep warm the rows of preforms that fall freely from the preform forming mold (20) and transfer the rows of preforms from the preform forming mold (20) to the handover station in a straight line.

2. The injection molding and preform ejection integrated 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, and each preform forming mold (20) is set with a set of linear conveying devices (40); The screw injection module (10) is located at the same end of multiple preform molding dies (20).

3. The injection molding and preform ejection integrated 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 injection molding and preform ejection integrated 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.

5. The injection molding and preform ejection integrated machine according to claim 4, 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).

6. The injection molding and preform ejection integrated machine according to claim 2, characterized in that, The linear transfer device (40) includes a support rail for connecting to the frame, a heat preservation demolding device (42) slidably supported on the support rail, and a longitudinal transfer drive mechanism (43) for driving the heat preservation demolding device (42) to move. The heat preservation demolding device (42) is set to open and close laterally with the longitudinal line extending along its sliding direction as the opening and closing line. It then opens along the lateral width direction to allow a row of preforms arranged on the preform forming mold (20) to fall downward into it, and closes relative to each other along the lateral width direction to clamp and keep the fallen preforms warm. The longitudinal drive mechanism (43) is mounted on the support rail and connected to the heat preservation demolding device (42) to drive the heat preservation demolding device (42) to slide back and forth between the preform forming mold (20) and the handover station along the arrangement direction of the preform row.

7. The injection molding and preform ejection integrated machine according to claim 6, characterized in that, The heat preservation demolding device (42) includes a pull plate assembly (421) slidably connected to the support rail frame and connected to the longitudinal movement drive mechanism (43), a clamping plate assembly (422) extending longitudinally, and a transverse movement drive mechanism (423) disposed on the pull plate assembly (421) and connected to the clamping plate assembly (422). The clamping plate assembly (422) includes a first clamping plate (4221) and a second clamping plate (4222) symmetrically arranged about the arrangement line of the bottle preforms. The first clamping plate (4221) and the second clamping plate (4222) are respectively connected to the transverse drive mechanism (423) to clamp and keep the bottle preforms relatively close together, or to move relatively far apart so that the bottle preforms can be transported in a straight line along the direction of their arrangement line.

8. The injection molding and preform ejection integrated machine according to claim 7, characterized in that, The number of clamping plate groups (422) is multiple. Multiple clamping plate groups (422) are arranged sequentially and spaced apart along the width direction of the pull plate group (421) to correspond to the multiple rows of preforms arranged sequentially and spaced apart along the width direction on the preform forming mold (20). Multiple first clamping plates (4221) of multiple clamping plate groups (422) are connected by a first connecting rod (4223), and multiple second clamping plates (4222) of multiple clamping plate groups (422) are connected by a second connecting rod (4224). The transverse drive mechanism (423) is connected to the outermost first clamping plate (4221) and second clamping plate (4222).

9. The injection molding and preform ejection integrated machine according to claim 7, characterized in that, The heat preservation demolding device (42) also includes a heating component (424) for heating the clamped preforms, which is disposed within the clamping plate assembly (422).

10. The injection molding and preform ejection integrated machine according to claim 8, characterized in that, The support frame includes multiple linear guide rails (411) that are spaced apart along the width of the frame and extend longitudinally, a support plate (412) that is horizontally arranged below the multiple linear guide rails (411), and multiple sets of supports (413) that are spaced apart along the length of the support plate (412). The linear guide rails (411) and the support plate (412) are respectively connected to the frame. The pull plate assembly (421) includes a horizontally arranged pull plate, multiple sets of sliders connected to the lower surface of the pull plate and slidably arranged in correspondence with multiple linear guide rails (411), a vertical plate vertically connected to the end of the pull plate, a clamping plate assembly (422) and a transverse drive mechanism (423) respectively arranged on the pull plate; The longitudinal drive mechanism (43) includes a lead screw (431) rotatably supported on multiple sets of supports (413), a drive motor (432) connected to the end of the lead screw (431), and a nut (433) fitted on the outer circle of the lead screw (431). The nut (433) is fixed to the vertical plate.

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