Linear transfer device and injection-blowing all-in-one machine

Abstract

The utility model discloses a linear transfer device and an injection-blowing all-in-one machine. The linear transfer device comprises a supporting rail frame connected with a machine frame of the injection-blowing all-in-one machine, a heat preservation mold stripping device supported on the supporting rail frame in a sliding mode, and a longitudinal movement driving mechanism used for driving the heat preservation mold stripping device to act. The heat preservation mold stripping device is transversely arranged in an opening and closing mode with a longitudinal line extending in the sliding direction of the heat preservation mold stripping device as an opening and closing line so as to be used for containing and preserving a bottle blank row freely falling off from the bottle blank forming mold, and the heat preservation mold stripping device is opened after sliding to the handover station so that the subsequent bottle blank row can be linearly transferred. The longitudinal movement driving mechanism is arranged on the supporting rail frame and connected with the heat preservation mold stripping device so as to be used for driving the heat preservation mold stripping device to slide back and forth between the bottle blank forming mold and the connection station in the arrangement direction of the bottle blank rows. The device can greatly simplify the structure of a bottle blowing, filling and sealing production line, reduces the preparation cost, and is high in action precision, simple to control, extremely short in exposure time of a bottle preform in the air and lower in heat loss.

Description

Technical Field

[0001] This utility model relates to the field of plastic bottle manufacturing technology, and in particular, to a linear conveyor device. Furthermore, this utility model also relates to an injection blow molding machine including the aforementioned linear conveyor device. 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 a linear transfer device and an integrated injection-blowing machine to solve the technical problems of existing devices, such as complex overall device structure, high manufacturing cost, long exposure time of preforms to air resulting in significant heat loss, and the need for additional heating before subsequent pre-blowing or formal bottle blowing, which consumes energy, increases costs, and seriously affects work efficiency.

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

[0008] A linear transfer device is provided for placement between a preform forming mold and an adjacent handover station. The linear transfer device includes: a support rail for connection to the frame of an injection blow molding machine; 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 along a longitudinal line extending in its sliding direction to receive and insulate a row of preforms that freely fall from the preform forming mold, and opens after sliding to the handover station to facilitate the linear transfer of subsequent preform rows. The longitudinal drive mechanism is mounted on the support rail and connected to the heat-insulating demolding device to drive the heat-insulating demolding device to reciprocate between the preform forming mold and the handover station along the arrangement direction of the preform rows.

[0009] 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.

[0010] Furthermore, the first clamping plate and the second clamping plate are respectively provided with a plurality of recessed receiving grooves arranged sequentially at intervals along the length direction on their opposing surfaces, and the plurality of receiving grooves are respectively provided with a plurality of bottle preforms included in the bottle preform column to be clamped.

[0011] 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.

[0012] 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.

[0013] Furthermore, the heating assembly includes a heat insulation pad disposed between the pull plate assembly and the clamping plate assembly, and a heating component connected to the heat insulation pad; the heating component is a heating coil or heating tube that extends along the length direction of the clamping plate assembly.

[0014] 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.

[0015] According to another aspect of this utility model, an injection blow molding machine is also provided, comprising: a vertical injection molding machine, a transfer station located downstream of the vertical injection molding machine, a linear transfer device as described above that is reciprocating along a straight line between the vertical injection molding machine and the transfer station, and a blow molding device; the vertical injection molding machine includes a screw injection module and multiple preform forming molds connected thereto, and each preform forming mold, transfer station, linear transfer device and blow molding device are arranged in a corresponding manner, and the bottle entry and exit lines of the preform forming mold, transfer station and blow molding device are on the same central axis.

[0016] 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.

[0017] Furthermore, the injection blow molding machine also includes a preform preheating device located at the handover station and a pre-blowing device located between the handover station and the blow molding device; the bottle inlet and outlet lines of the preform preheating device and the pre-blowing device are the central axis.

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

[0019] In this invention, a linear transfer device replaces the existing bottle receiving and bottle picking mechanisms, greatly simplifying the structure of the blow molding and filling production line and reducing manufacturing costs. The linear transfer device has a simple structure, and its operation and control process are significantly simpler than the combined actions 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. Furthermore, in existing technologies, the bottle picking mechanism exposes the preforms to air for a longer period, leading to significant heat loss. In this new device, the heat-insulating demolding device allows the demolded preforms to fall freely into it, eliminating the need for the existing bottle picking mechanism. The design simplifies the overall structure and reduces manufacturing costs. The heat-insulating demolding device can also quickly close to clamp and insulate the preform, thus preventing the preform from being exposed to air for an extended period. This minimizes the time the preform is exposed to air and reduces heat loss, meaning that subsequent pre-blowing or formal blowing may not require additional heating (in existing technologies, due to the long exposure time of the preform, depending on the preform material, most preforms require reheating before pre-blowing or blowing; however, in this application, because the preform is exposed to air for a very short time after demolding, only a very small number of preforms require reheating), reducing energy consumption and costs while improving production efficiency.

[0020] In this invention's integrated injection blow molding machine, the preform forming mold, the handover station, and the bottle entry / exit lines of the blow molding device are all on the same central axis. Therefore, this integrated injection blow molding machine is a true linear production line. In contrast, existing technologies are not strictly linear production lines because the injection module and other devices are laterally misaligned (actually, the bottle receiving mechanism and other devices form a straight line). Furthermore, this invention's vertical injection molding machine includes a screw injection module and multiple preform forming molds. The screw injection module can process multiple preforms separately. In contrast to existing technologies where a single injection screw connects to a preform molding die, this new vertical injection molding machine not only meets the demands of high-efficiency preform production but also effectively simplifies the structure of the entire plastic bottle production line, thereby significantly reducing production costs and installation space requirements. Furthermore, this new 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, high-efficiency production in multiple batches.

[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 schematic front view of the combination of the preform forming mold and the linear conveying device according to a preferred embodiment of the present invention. Figure 1 ;

[0025] Figure 3 yes Figure 2 Partial top view of the structure;

[0026] Figure 4 This is a top view of the injection-blowing machine according to a preferred embodiment of the present invention. Figure 1 ;

[0027] Figure 5 yes Figure 4 A partially enlarged structural diagram;

[0028] Figure 6 This is a schematic diagram of the main structure of the injection-blowing machine according to a preferred embodiment of the present invention. Figure 2 ;

[0029] Figure 7 This is a schematic diagram of the main structure of the injection-blowing machine according to a preferred embodiment of the present invention. Figure 3 ;

[0030] Figure 8 yes Figure 7 A top-view structural diagram;

[0031] Figure 9 This is a partial top view of the injection-blowing machine according to a preferred embodiment of the present invention. Figure 4 ;

[0032] Figure 10 yes Figure 9 A partial cross-sectional top view of a vertical injection molding machine.

[0033] Legend:

[0034] 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;

[0035] 20. Preform forming mold; 30. Preform preheating device;

[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 assembly; 43. Longitudinal movement drive mechanism; 431. Lead screw; 432. Drive motor; 433. Nut;

[0037] 50. Pre-blowing device; 60. Bottle blowing device; 110. Central axis. Detailed Implementation

[0038] 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.

[0039] Reference Figure 2 and Figure 4 A preferred embodiment of this utility model provides a linear transfer device 40, which is installed between a preform forming mold 20 and a handover station immediately following the preform forming mold 20. The linear transfer device 40 includes: a support rail for connecting to the frame of an injection blow molding machine; 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 along a longitudinal line extending in its sliding direction to receive and insulate a row of preforms that freely fall from the preform forming mold 20, and opens after sliding to the handover station to facilitate the linear transfer of subsequent preform rows. The longitudinal drive mechanism 43 is installed 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 handover station along the arrangement direction of the preform rows.

[0040] In this invention, the preform forming mold 20 is formed by removing the transition mold 106 from the existing injection molding module 100. During operation, the upper mold of the preform forming mold 20 drives the prepared preforms arranged longitudinally at intervals to move upward so as to be pulled out from the lower mold below. During the upward movement of the preforms driven by the upper mold, the longitudinal movement drive mechanism 43 is activated so that the heat preservation demolding device 42 slides longitudinally to the lower part of the upper mold. At this time, the heat preservation demolding device 42 is slightly opened in the transverse width direction, or the heat preservation demolding device 42 can be directly closed. The upper mold drives the preforms to continue to rise. During the process, the upper mold opens, and all the preforms in the preform column fall freely downwards into the heat-insulating demolding device 42 below. After all the preforms have entered the heat-insulating demolding device 42, the heat-insulating demolding device 42 clamps the preform column and simultaneously insulates the preforms. Finally, the longitudinal movement drive mechanism 43 is activated again, causing the heat-insulating demolding device 42 to drive the preform column to slide linearly to the handover station. After the heat-insulating demolding device 42 moves into position at the handover station, it opens, and the bottle conveying device located at the handover station moves to clamp the exposed preform column so that the bottle conveying device can clamp the preform column and move it longitudinally to the next station.

[0041] In this invention, a linear transfer device replaces the existing bottle receiving and bottle picking mechanisms, greatly simplifying the structure of the blow molding and filling production line and reducing manufacturing costs. 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. This results in high precision, simple control, and greatly improved production efficiency due to the simplified operation process. Furthermore, 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 heat-insulating demolding device 42 allows the demolded preforms to fall freely into it, eliminating the need for the existing bottle picking mechanism. The design simplifies the overall structure and reduces manufacturing costs. The heat-insulating demolding device 42 can also quickly close to clamp and insulate the preform, thus preventing the preform from being exposed to air for an extended period. This minimizes the time the preform is exposed to air and reduces heat loss, meaning that subsequent pre-blowing or formal blowing may not require additional heating (in the prior art, due to the long exposure time of the preform, depending on the preform material, most preforms require reheating before pre-blowing or blowing; however, in this application, because the preform is exposed to air for a very short time after demolding, only a very small number of preforms require reheating), reducing energy consumption and costs while improving production efficiency.

[0042] Optionally, such as Figure 2As 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.

[0043] Optionally, such as Figure 2 and Figure 3 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.

[0044] In this optional solution, such as Figure 2 and Figure 3 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 2 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.

[0045] In this optional solution, such as Figure 3As 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.

[0046] 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.

[0047] Optionally, such as Figure 4 and Figure 5 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.

[0048] 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 scheme, the multiple first clamping plates 4221 of the multiple clamping plate groups 422 are connected by a first connecting rod 4223, and the 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 the second clamping plate 4222. The multiple first clamping plates 4221 are connected as one unit by the first connecting rod 4223, and the multiple second clamping plates 4222 are also connected as one unit by the second connecting rod 4224. At this time, the transverse drive mechanism 423 may include two sets of drive cylinders, which are respectively connected to the outermost first clamping plate 4221 and the second clamping plate 4222.

[0049] Preferably, such as Figure 3 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 3 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.

[0050] Reference Figure 6 The preferred embodiment of this utility model also provides an injection blow molding machine, including: a vertical injection molding machine, a transfer station located downstream of the vertical injection molding machine, a linear transfer device 40 as described above that is reciprocating along a straight line between the vertical injection molding machine and the transfer station, and a blow molding device 60; the vertical injection molding machine includes a screw injection module 10 and multiple preform molding dies 20 connected thereto, and each preform molding die 20, the transfer station, the linear transfer device 40 and the blow molding device 60 are arranged in a one-to-one correspondence, and the bottle entry and exit lines of the preform molding die 20, the transfer station and the blow molding device 60 are on the same central axis 110.

[0051] When the injection blow molding machine of this utility model is working, the screw injection module 10 heats and plasticizes the plastic material into a plastic flow, which is then injected into the preform forming mold 20 that is tightened. Then, the preform forming mold 20 starts to make preforms. After the preforms are made, the upper mold drives the preforms arranged longitudinally at intervals to move upward so that they can be pulled out from the lower mold below. During the upward movement of the preforms, 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 in the transverse width direction. As the preforms continue to rise, the upper mold opens, and all the preforms in the preforms fall freely downward 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 are handed over to the subsequent bottle conveying device. The bottle conveying device then transfers the preforms to the blow molding station 60 for blow molding.

[0052] In this invention's integrated injection blow molding machine, the bottle preform forming mold 20, the handover station, and the bottle blowing device 60 all share the same central axis 110. Therefore, this integrated injection blow molding machine is a true linear production line. In contrast, existing technologies are not strictly linear production lines because the injection molding module 100 is laterally misaligned with other devices (actually, the bottle receiving mechanism forms a straight line with other devices). Furthermore, this invention's vertical injection molding machine includes a screw injection molding module 10 and multiple preform forming molds 20. The screw injection molding module 10 can be used to separately... This novel vertical injection molding machine performs injection molding and preform formation on multiple preform forming molds 20. Compared to existing technologies where one injection screw connects to one preform forming mold, this new vertical injection molding machine 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. In addition, this new 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 realizing continuous and efficient production of multiple batches.

[0053] Optionally, such as Figure 9 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, 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.

[0054] 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.

[0055] 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.

[0056] 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.

[0057] Optionally, in a second embodiment of the screw injection molding module 10, such as Figure 9As 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.

[0058] 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.

[0059] 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.

[0060] In this optional solution, such as Figure 10As 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.

[0061] In this optional solution, such as Figure 10 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.

[0062] In this optional solution, the first embodiment of the diversion network 121 is as follows: Figure 10As 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.

[0063] 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.

[0064] Optionally, such as Figure 7 and Figure 8 As shown, the injection blow molding machine also includes a preform preheating device located at the handover station and a pre-blow device 50 located between the handover station and the blow molding device 60. The bottle inlet and outlet lines of the preform preheating device 30 and the pre-blow device 50 are the central axis 110, and the preform preheating device 30 and the pre-blow device 50 are existing devices.

[0065] 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 linear transfer device, characterized in that, The linear transfer device (40) is used to be positioned between the preform forming mold (20) and the handover station immediately following the preform forming mold (20). Support rail for connecting to the frame of the injection blow molding machine, heat preservation demolding device (42) slidably supported on the support rail, and longitudinal 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, so as to receive and keep a row of bottle preforms falling freely from the heat preservation bottle preform forming mold (20), and to open after sliding to the handover station so as to facilitate the straight transfer of subsequent bottle preforms. 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.

2. The linear transfer device according to claim 1, 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.

3. The linear transfer device according to claim 2, characterized in that, On the opposing surfaces of the first clamping plate (4221) and the second clamping plate (4222), there are a plurality of recessed receiving grooves arranged sequentially at intervals along the length direction, and the plurality of receiving grooves (4220) are arranged one-to-one with the plurality of preforms contained in the preform column to be clamped.

4. The linear transfer device according to claim 2, 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).

5. The linear transfer device according to claim 2, 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).

6. The linear transfer device according to claim 5, characterized in that, The heating assembly (424) includes a heat insulation pad disposed between the pull plate assembly (421) and the clamping plate assembly (422), and a heating component connected to the heat insulation pad; The heating element is a heating coil or heating tube that extends along the length of the clamping plate assembly (422).

7. The linear transfer device according to claim 2, 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.

8. A blow molding machine, characterized in that, include: Vertical injection molding machine, a handover station located downstream of the vertical injection molding machine, a linear transfer device (40) that is reciprocating along a straight line between the vertical injection molding machine and the handover station as described in any one of claims 1-7, and a blow molding device (60). The vertical injection molding machine includes a screw injection module (10) and multiple preform molding dies (20) connected to it. Each preform molding die (20), handover station, linear conveyor (40) and blow molding device (60) are set up in a corresponding manner. The bottle entry and exit lines of the preform molding die (20), handover station and blow molding device (60) are on the same central axis (110).

9. The injection-blowing machine according to claim 8, 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).

10. The injection-blowing machine according to claim 8, characterized in that, The injection blow molding machine also includes a preform preheating device located at the handover station and a pre-blowing device (50) located between the handover station and the blow molding device (60). The bottle inlet and outlet lines of both the preform preheating device (30) and the pre-blowing device (50) are the central axis (110).

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