CN117087137A - Vertical multi-station injection blow molding machine - Google Patents

Abstract

The vertical multi-station injection blow hollow forming machine comprises a frame and an injection mold locking mechanism, wherein the injection mold locking mechanism comprises a fixed seat, an upper movable mold plate assembly, a lower movable mold plate assembly, a rotary disk assembly, an injection mold and a core mold assembly, and the fixed seat is arranged on the frame and is provided with at least two stations at intervals; the upper movable template assembly comprises an upper movable template and an upper movable template driving piece, and the upper movable template is slidably arranged on the fixed seat and is connected with the upper movable template driving piece; the lower movable template assembly comprises a lower movable template and a lower movable template driving piece, and the lower movable template is arranged on the fixed seat in a sliding manner and is connected with the lower movable template driving piece; the rotary disc assembly comprises a rotary disc and a rotary driving piece, and the rotary driving piece is arranged on the upper movable mould plate and is connected with the rotary disc; the blank injection mold comprises an injection cavity assembly and a mouth mold assembly, and the injection cavity assembly is arranged at a station of the fixed seat; the mouth module assembly is arranged on the lower movable mould plate; the mandrel assembly is arranged on the turntable. Which prevents the parison from bending during rotation with the turntable.

Description

Vertical multi-station injection blow molding machine

Technical field

The invention relates to injection molding equipment, in particular to a vertical multi-station injection blowing hollow molding machine.

Background technique

In a vertical multi-station injection blow molding machine, the core mold is set vertically and usually includes multiple sets of core molds and multiple sets of die. During operation, the driving mechanism drives multiple sets of core molds and multiple sets of die to rotate simultaneously, so that The tube blanks move in adjacent stations, and the equipment costs are high due to the multiple sets of core dies and mouth dies. In addition, in the existing vertical multi-station injection blow molding machine, each group of mandrels is connected to an air pipe to blow out the exhaust. The mouth mold assembly following the mandrel also needs to be connected to an air pipe to remove the bottle. When the mandrel and When the die rotates at the same time, a large number of air pipes connected to the mandrel and die also rotate. In order to avoid entanglement of the pipes, the mandrel and die can only rotate back and forth. This form of rotation makes it impossible to set up more work stations. Cooling core mold, for example, a dual-station reciprocating rotary injection blow molding machine disclosed in China Utility Model CN201511518U. When this type of double-station reciprocating rotary injection blow blow molding machine produces small-diameter bottles, the mandrel is too small to transport water for cooling. As a result, the mandrel cannot maintain a constant temperature during the production process, and the parison often sticks to the mandrel. Inflated, it is impossible to continuously produce qualified small-diameter bottles.

The horizontal multi-station injection blow molding machine has the core mold set horizontally, including multiple sets of core molds and one set of die. During operation, the die does not rotate. The driving mechanism drives the multiple sets of core molds to rotate so that the tube blank Move in the adjacent station; although it can add a parison cooling station to achieve continuous production of qualified small-diameter bottles, due to the horizontal setting of the mandrel, the parison is prone to deformation before inflation due to its own weight and rotational centrifugation. , some bottles cannot be formed; and during operation, the preforms easily come out of the mandrel due to centrifugal force, and the parisons sag due to gravity during the blowing process, resulting in uneven thickness of the bottles obtained.

When using a stretch-blow molding machine to produce small-diameter bottles, although the mandrel can carry water to ensure adequate cooling, the mandrel has already pulled away from the parison before blowing, so that the slender parison is easily deformed and bent. It is also unable to stably produce qualified bottles, resulting in a low yield rate of the resulting product. For example, Chinese utility model patent CN208896471U discloses an injection stretch blow molding device, which includes injection molding mold parts and blow molding mold parts, and also includes a frame and a workbench panel fixed on the frame. The workbench panel passes through guides. The column is connected to the upper plate; the guide column is provided with a moving plate, which is connected to the rotating plate through a rotating drive mechanism; the rotating plate is equipped with a mouth mold group, and the rotating plate rotates to move the mouth mold group to the injection molding mold parts and the blow molding respectively. The molding mold parts are intermittently transferred and formed into injection molding modules and stretch blow molding modules respectively; the upper plate is equipped with a clamping oil cylinder at the position corresponding to the injection molding module, and its clamping piston rod is connected to the moving plate; the workbench panel There are two or more rapid oil cylinders inside the frame to drive the moving plate and rotating plate to rise and fall together. The injection stretch blow blow molding device separates the core mold from the parison so that the bottle mouth of the parison is connected to the mouth mold set, and then rotates the mouth mold set and the parison connected to the mouth mold set by rotating the rotating disk. Transferred to blow molding mold parts for inflation. However, in order to ensure that the parison can be successfully inflated at the blow molding mold part, the parison must remain in a high elastic state during the entire stretch blow molding process. The parison in the high elastic state is very soft and has low strength. During the rotation of the rotating plate and die set, the parison is easily bent and deformed by air resistance or centrifugal force, and the slender bottle preform will shrink during the natural cooling process, which will also cause the bottle to bend and deform, resulting in The resulting product yield is reduced.

Contents of the invention

The present invention aims to solve at least one of the technical problems raised in the above background art and provide a vertical multi-station injection blow molding machine. Compared with the existing horizontal multi-station injection blow molding machine or injection drawing machine, The blow molding machine can reduce the bending deformation of the parison caused by air resistance or centrifugal force during the rotation of the turntable or shrinkage during the natural cooling process, and improve the yield of the product; and compared with the existing The equipment cost of the vertical multi-station injection blow molding machine with advanced technology can be reduced.

In order to achieve the above objects, the technical solutions adopted by the present invention are:

A vertical multi-station injection blow molding machine, including a frame and an injection mold locking mechanism installed on the frame. The injection mold locking mechanism includes:

Fixed base, the fixed base is installed on the frame, and the fixed base is provided with at least two work stations at intervals;

The upper moving template assembly includes an upper moving template and an upper moving template driving member. The upper moving template is slidably installed on the fixed base. The upper moving template driving member is connected to the upper moving template to drive the upper moving template. The above movable template reciprocates in the vertical direction;

The lower moving template assembly includes a lower moving template and a lower moving template driving member. The lower moving template is located below the upper moving template. The lower moving template is slidably mounted on the fixed base; the lower moving template is slidably mounted on the fixed base; The template driving member is connected with the lower moving template to drive the lower moving template to reciprocate in the vertical direction;

The rotating disk assembly includes a rotating disk and a rotating driving part. The rotating disk is located between the upper moving template and the lower moving template. The rotating driving part is installed on the upper moving template and connected with the rotating disk. To drive the turntable to rotate intermittently with a vertical axis as the center of rotation; and

An injection mold includes an injection cavity component and a die component. The injection cavity component is installed at one of the stations of the fixed base and is located below the lower moving template; the die The component is installed on the lower moving template and is located directly above the injection cavity component; and

A core mold assembly is installed on the turntable, and the core mold assembly can cooperate with the injection mold to form a parison wrapped around the core mold assembly, and the core mold assembly is The mandrel mold assembly can rotate with the turntable to rotate the parison wrapped on the mandrel mold assembly to the next station.

Further, the injection mold locking mechanism includes a blow molding mold, and the blow molding mold includes a blowing component and a blowing mold component located directly below the blowing component, and the blowing component is installed on the On the above-mentioned movable template, the bottle blowing mold assembly is installed on other stations of the fixed base and is located below the lower movable template.

Further, the fixed seat is provided with four stations at intervals along the rotation direction of the turntable. The vertical multi-station injection blow molding machine also includes a bottle removal component and a core mold cooling component. The bottle removal component and the core mold cooling assembly are installed on the fixed seat and located below the lower moving template, the injection cavity assembly, the bottle blowing mold assembly, the bottle removal assembly and the core The mold cooling assembly is sequentially arranged at the four work stations along the rotation direction of the turntable.

Further, the injection mold includes four groups of the core mold assemblies, the four groups of the core mold assemblies are evenly spaced around the rotation center of the turntable, and the four groups of the core mold assemblies respectively correspond to four The work station.

Further, the lower movable template is provided with a relief groove, the relief groove is facing the die assembly, and the core mold assembly can be inserted into the die assembly in sequence through the relief groove. and in the injection cavity assembly.

Further, the blowing assembly includes a support frame, a blowing driving part and a blowing mold. The supporting frame is fixed on the upper moving template. The blowing driving part is installed on the supporting frame and connected to the blowing mold. The blowing mold is provided with There is a gas line joint, which is used to connect the breather pipe. The blowing mold is provided with an air inlet channel connected with the gas line joint; the blowing driving part can drive the blowing mold to move in the direction close to the core mold assembly until the blowing mold is blown. The air mold is docked with the core mold assembly located at the blow molding station and allows the air inlet channel to communicate with the core mold assembly, or the blowing driver can drive the blowing mold to move in a direction away from the core mold assembly until the air is blown The mold and core mold components are separated.

Further, an escape hole is provided on the lower moving template, and the core mold assembly can be selectively inserted into the bottle blowing mold assembly, the bottle removal assembly and the core mold cooling module through the escape hole. in the component.

Further, the upper moving template driving member and the lower moving template driving member are both installed on the fixed base.

Further, the fixed seat includes a fixed panel, a guide pillar and a mounting plate. The fixed panel is fixed on the bottom end of the guide pillar, the mounting plate is fixed on the top end of the guide pillar, and the upper moving template and The lower movable template is arranged in parallel between the fixed panel and the installation plate and is both slidably installed on the guide post. The upper movable template driving member is installed on the installation plate. The lower moving template driving member is installed on the fixed panel, and the station is provided on the fixed panel.

Further, the upper moving template driving member is a mold locking cylinder, and the lower moving template driving member includes a plurality of lifting oil cylinders, and the plurality of lifting oil cylinders are distributed at intervals along the circumferential direction of the lower moving template.

Further, the rotary driving member is connected to the turntable through a connecting shaft, the connecting shaft is rotatably mounted on the upper moving template, the turntable is fixedly sleeved on the connecting shaft, and the rotary driving member It is installed on the upper moving template and is drivingly connected with the connecting shaft.

Further, the bottle removal assembly includes a base, a lifting platform, a lifting driving part and two clamping parts. The base is fixed on the fixed seat; the lifting platform is slidingly connected to the base; the lifting driving part is connected to the lifting platform to drive the lifting platform in the vertical direction. Movement; two clamping parts are arranged at relative intervals. Each clamping part includes a clamping driving part installed on the lifting platform and a splint connected to the clamping driving part. The splints of the two clamping parts are respectively located at the core of the corresponding work station. The opposite sides of the mold assembly can approach each other driven by the clamping driver to clamp the plastic bottle products formed on the core mold assembly of the corresponding station, or move away from each other to release the core mold assembly of the corresponding station. Plastic bottle products formed on parts.

Due to the adoption of the above technical solutions, the present invention has the following beneficial effects:

In the vertical multi-station injection blowing hollow molding machine of the present invention, the core mold assembly rotates intermittently with the turntable with a vertical axis as the center of rotation. The entire set of molds has only one set of die assemblies, and the die assembly moves up the mold opening. It opens when it reaches the preset position. It does not follow the rotation of the turntable, but drives the parison to rotate to the next station through the core mold assembly. Therefore, compared with the core of the existing horizontal multi-station injection blow molding machine, The vertical multi-station injection blowing hollow molding machine of the present invention uses a vertical axis as the center of rotation in which the core mold assembly rotates intermittently with the mold set horizontally, which can reduce the stress on the parison during the rotation of the turntable. The probability of bending deformation due to air resistance or centrifugal force; since the mandrel assembly extends from the bottle mouth of the parison to the bottom of the parison, compared to the injection stretch blow molding machine in the prior art that only passes through the parison In the way that the mouth mold assembly outside the bottle mouth drives the parison to rotate, the contact area between the core mold assembly and the parison of the present invention is larger, and the core mold assembly located inside the parison can rotate the parison during the rotation of the parison. Provide better support to prevent the parison from bending and deforming due to air resistance or centrifugal force or the shrinkage of natural cooling during the rotation of the turntable, thereby improving product yield. And compared with the vertical multi-station injection blow molding machine of the prior art, the vertical multi-station injection blow molding machine of the present invention only requires one set of die components, so its equipment cost is lower.

Description of the drawings

Figure 1 is a schematic structural diagram of a vertical multi-station injection blow molding machine according to a preferred embodiment of the present invention;

Figure 2 is a schematic three-dimensional structural diagram of the injection mold locking mechanism in the vertical multi-station injection blowing hollow molding machine shown in Figure 1;

Figure 3 is an enlarged view of the structure of the air blowing assembly in Figure 2;

Figure 4 is a schematic front structural view of the injection mold locking mechanism shown in Figure 2;

Figure 5 is a schematic structural diagram of the bottle removal assembly of the vertical multi-station injection blowing hollow molding machine according to the preferred embodiment of the present invention;

Figure 6 is a schematic structural diagram of the core mold cooling assembly of the vertical multi-station injection blow molding machine according to the preferred embodiment of the present invention;

Description of main component symbols

10. Frame; 20. Injection system; 30. Injection mold clamping mechanism; 31. Fixing seat; 311. Fixed panel; 313. Guide pillar; 314. Installation plate; 32. Upper moving template assembly; 321. Upper moving template; 322. Sliding hole; 323. Upper moving template driving member; 33. Lower moving template assembly; 331. Lower moving template; 332. Guide hole; 334. Avoidance groove; 335. Avoidance hole; 336. Lower moving template driving member; 34. Rotating plate assembly; 341. Turntable; 343. Rotating drive part; 344. Connecting shaft; 35. Injection mold; 351. Injection cavity assembly; 353. Mouth mold assembly; 36. Core mold assembly; 361. Core mold; 37. Blow molding mold; 371. Blowing assembly; 3711. Support frame; 3712. Support plate; 3713. Connecting column; 3714. Blowing drive part; 3715. Blowing mold; 372. Bottle blowing module 373. Mold clamping cylinder; 374. Clamping plate; 375. Communication port; 38. Core mold cooling component; 381. Cavity mold; 382. Air joint; 383. Mold cavity; 39. Bottle removal component; 391. Base; 3911, seat body; 3912, guide rod; 392, lifting platform; 3921, guide hole; 3923, bottle drop opening; 3924, guide groove; 393, lifting driving member; 394, clamping member; 3941, clamp Holding driving parts; 3942, plywood; 3943, groove; 40, plastic bottle products.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

It should be noted that when a component is said to be "anchored" to another component, it can be directly on the other component or there can also be an intermediate component. When a component is said to be "connected" to another component, it may be directly connected to the other component or there may be an intermediate component present at the same time. When a component is said to be "set on" another component, it can be directly set on the other component or there may be a centered component at the same time. The terms "vertical," "horizontal," "left," "right" and similar expressions are used herein for illustrative purposes only.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which the invention belongs. The terminology used herein in the description of the invention is for the purpose of describing specific embodiments only and is not intended to limit the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Please refer to Figures 1 to 6 together. A preferred embodiment of the present invention provides a vertical multi-station injection blow molding machine, including a frame 10, an injection mold locking mechanism 30 and an injection system 20. The injection mold locking mechanism The mechanism 30 and the injection system 20 are both installed on the frame 10 , and the injection system 20 is used to inject molding to the injection mold locking mechanism 30 .

The injection mold locking mechanism 30 includes a fixed base 31, an upper moving template assembly 32, a lower moving template assembly 33, a rotating disk assembly 34, an injection mold 35 and a core mold assembly 36. The upper moving template assembly 32, the lower moving template assembly 33, The rotating disk assembly 34 , the injection mold 35 and the core mold assembly 36 are all installed on the fixed base 31 .

There are at least two workstations spaced apart on the fixed base 31. In this embodiment, four workstations (not labeled) are provided spaced apart on the fixed base 31, and the angle between two adjacent workstations is 90°. Specifically, the fixed base 31 includes a fixed panel 311, a guide post 313 and a mounting plate 314. The fixed panel 311 is fixed on the frame 10, the bottom end of the guide post 313 is fixedly connected to the fixed panel 311, and the installation plate 314 is fixed on the guide post 313. top. In this embodiment, the fixed base 31 includes a plurality of guide posts 313, which are arranged vertically and spaced around the circumference of the fixed panel 311. One end of each guide post 313 is fixedly connected to the fixed panel 311, and each guide post 313 is fixedly connected to the fixed panel 311. The other end of the column 313 is fixedly connected to the mounting plate 314 . In this embodiment, four workstations are spaced apart on the top surface of the fixed panel 311 , and each workstation is provided in a space surrounded by two adjacent guide posts 313 .

The upper moving template assembly 32 includes an upper moving template 321 and an upper moving template driving member 323. The upper moving template 321 is slidably installed on the fixed base 31. The upper moving template driving member 323 is connected to the upper moving template 321 to drive the upper moving template. 321 reciprocates vertically. In this embodiment, the upper moving template 321 is provided with a plurality of sliding holes 322 corresponding to the plurality of guide posts 313 , and the upper moving template 321 is slidably sleeved on the plurality of guide posts 313 through the plurality of sliding holes 322 . The upper moving template driving member 323 is installed on the fixed base 31. The upper moving template driving member 323 is a clamping oil cylinder. The cylinder of the clamping oil cylinder is fixed on the mounting plate 314. The piston shaft of the clamping oil cylinder is connected to the upper moving template 321. , to drive the upper moving template 321 to slide along the guide pillar 313. In addition, after the upper movable template 321 moves down and closes the mold in place, the mold clamping cylinder can also perform pressurized mold locking. The structure of the clamping cylinder belongs to the existing technology, and will not be described in detail here to save space. It can be understood that in other embodiments, the upper moving template driving member 323 can also use other driving devices in the prior art that can drive the upper moving template 321 to move linearly, and the upper moving template 321 can also be driven by locks with other structures in the prior art. The mold mechanism locks the mold.

The lower template assembly 33 includes a lower template 331 and a lower template driver 336. The lower template 331 is located below the upper template 321. The lower template 331 is slidably mounted on the fixed base 31. The lower template driver 336 It is connected with the lower moving template 331 to drive the lower moving template 331 to reciprocate in the vertical direction. In this embodiment, the lower moving template 331 and the upper moving template 321 are arranged in parallel between the fixed panel 311 and the mounting plate 314 and are both slidably installed on the guide posts 313. Specifically, the lower moving template 331 corresponds to several The guide posts 313 are provided with a plurality of guide holes 332 , and the lower moving template 331 is slidably sleeved on the guide posts 313 through the guide holes 332 . The lowering template driving member 336 is installed on the fixed base 31. The lowering template driving member 336 includes a plurality of lifting cylinders. The plurality of lifting cylinders are distributed at intervals along the circumferential direction of the lowering template 331, and the cylinder body of each lifting cylinder is fixed on the fixed base 31. On the panel 311, the piston shaft of each lifting cylinder is connected to the lower moving template 331 to drive the lower moving template 331 to reciprocate along the guide post 313. It can be understood that in other embodiments, the lower movable template driving member 336 may also adopt other driving devices in the prior art that can drive the lower movable template 331 to move linearly.

The rotating disk assembly 34 includes a rotating disk 341 and a rotating driving part 343. The rotating disk 341 is located between the upper moving template 321 and the lower moving template 331. The rotating driving part 343 is installed on the upper moving template 321 and connected with the rotating disk 341 to drive the rotating disk 341. It rotates intermittently with a vertical axis as the center of rotation. In this embodiment, the rotary driving member 343 is connected to the turntable 341 through the connecting shaft 344. The connecting shaft 344 is installed vertically and rotationally on the upper moving template 321. The turntable 341 is fixedly sleeved on the connecting shaft 344. The rotating driving member 343 is drivingly connected to the connecting shaft 344. The rotary driving member 343 can use a motor of the prior art. The motor is fixed on the upper moving template 321 and can be drivingly connected to the connecting shaft 344 through a transmission mechanism such as a gear transmission device to drive the connecting shaft 344 and the turntable 341 to connect the shaft 344. The central axis is the intermittent rotation of the center of rotation. It can be understood that in other embodiments, the rotational driving member 343 may also adopt other driving devices in the prior art that are capable of rotating the turntable 341 .

The injection mold 35 includes an injection cavity assembly 351 and a die assembly 353. The injection cavity assembly 351 is installed at one of the stations of the fixed base 31 and is located below the lower moving template 331; the die assembly 353 is installed On the lower moving template 331, and located directly above the injection cavity component 351. In this embodiment, the injection cavity assembly 351 is installed at one of the stations of the fixed panel 311 and is located directly below the die assembly 353 . The structures of the injection cavity assembly 351 and the die assembly 353 in this embodiment are both existing technologies. For example, please refer to the injection mold set in the Chinese Utility Model Patent CN201511518U. For the die assembly 353, please refer to the Chinese Utility Model Patent. The mouth mold in CN201511518U will not be described in detail here to omit space. The mouth mold assembly 353 of this embodiment can use a thread mouth die set, through which threads can be formed at the bottle mouth of the parison. It can be understood that the die assembly 353 may also adopt die assemblies with other structures in the prior art.

In this embodiment, the injection mold locking mechanism 30 includes a blow molding mold 37 , and the blow molding mold 37 includes a blowing component 371 and a blowing mold component 372 located directly below the blowing component 371 . The blowing assembly 371 is installed on the upper moving template 321 , and the bottle blowing mold assembly 372 is installed on other stations of the fixed base 31 and is located below the lower moving template 331 . In this embodiment, the blowing assembly 371 includes a supporting frame 3711, a blowing driving member 3714 and a blowing mold 3715. The supporting frame 3711 is fixed on the upper moving template 321, and the blowing driving member 3714 is installed on the supporting frame 3711. It is connected to the blowing mold 3715. The blowing mold 3715 is provided with a gas line joint (not shown in the figure), and the air line joint is used to connect the vent pipe (not shown in the figure). Specifically, the support frame 3711 is fixed on the upper surface of the upper moving template 321. The support frame 3711 includes a connecting column 3713 and a support plate 3712. One end of the connecting column 3713 is fixedly connected to the upper surface of the upper moving template 321; the supporting plate 3712 is fixed on the connecting column. 3713 on. The blowing driving component 3714 is installed on the support plate 3712. In this embodiment, the blowing driving component 3714 can be a conventional oil cylinder or air cylinder. The blowing mold 3715 is located below the support plate 3712. The blowing mold 3715 is also slidingly connected to the connecting column 3713 of the support frame 3711 to guide the movement of the blowing mold 3715 through the connecting column 3713; Several air inlet channels (not shown in the figure) connected to the joints. The blowing driver 3714 can drive the blowing mold 3715 to move in a direction close to the core mold assembly 36 until the blowing mold 3715 is docked with the core mold assembly 36 at the blow molding station and allows several air inlet channels to be connected to the core mold assembly respectively. Several core molds 361 of the component 36 are connected, so that the gas in the vent pipe enters the blowing mold 3715 and the core mold assembly 36 sequentially through the gas line joint, and then inflates the parison wrapped on the core mold assembly 36; Or the blowing driving member 3714 can drive the blowing mold 3715 to move in a direction away from the core mold assembly 36 until the blowing mold 3715 is separated from the core mold assembly 36, thereby stopping the blowing operation. In addition, in order to facilitate the connection between the blowing mold 3715 and the core mold assembly 36, in this embodiment, the upper moving template 321 and the turntable 341 are both provided with communication ports 375 corresponding to the blowing assembly 371; when in use, the blowing mold 3715 It can extend into the communication opening 375 so that the blowing mold 3715 and the core mold assembly 36 can be connected.

In this embodiment, the blow mold assembly 372 is installed on the fixed panel 311 at a station adjacent to the injection cavity assembly 351, that is, the blow molding station. The bottle blowing mold assembly 372 may include a mold clamping cylinder 373, a clamping plate 374, etc. For details, please refer to the records in the Chinese utility model patent CN201511518U, which also belongs to the prior art and will not be described in detail here to omit space. During use, the core mold assembly 3 and the parison wrapped on the core mold assembly 3 enter the closed closing plate 374, and the air blowing assembly 371 is used to ventilate the core mold assembly 3 to perform the inflation operation. The clamping plate 374 is driven to open or close by the mold clamping cylinder 373 .

In this embodiment, the injection mold locking mechanism 30 also includes a bottle removal component 39 and a core mold cooling component 38. The bottle removal component 39 and the core mold cooling component 38 are respectively installed on the other two stations of the fixed base 31 and located below. Below the moving template 331. The injection cavity assembly 351, the bottle blowing mold assembly 372, the bottle stripping assembly 39 and the core mold cooling assembly 38 are evenly spaced around the rotation center of the turntable 341. Specifically, the injection cavity assembly 351, the bottle blowing mold assembly 372, the stripping mold cooling assembly 38 are evenly spaced around the rotation center of the turntable 341. The bottle assembly 39 and the core mold cooling assembly 38 are sequentially arranged at the four stations of the fixed panel 311 along the rotation direction of the turntable 341, that is, the injection cavity assembly 351 is opposite to the bottle removal assembly 39, and the blow mold assembly 372 is opposite to the core mold. The cooling assembly 38 is opposite. The injection cavity assembly 351 is located at an injection molding station, the blow mold assembly 372 is located at a blow molding station, and the bottle removal assembly 39 is located at a bottle removal station. , the station where the core mold cooling assembly 38 is located is the cooling station.

Please refer to Figure 5 again. In this embodiment, the bottle removal assembly 39 includes a base 391, a lifting platform 392, a lifting driving part 393 and two clamping parts 394. The base 391 is fixed on the fixed base 31; in this embodiment, the base 391 is fixed on the top surface of the fixed panel 311. The base 391 includes two opposite bases 3911, and the bottom end of the base 3911 is fixed on the fixed panel 311. On the top surface of each base body 3911, a vertically arranged guide rod 3912 is fixed. The lifting platform 392 is slidingly connected to the base 391; specifically, in this embodiment, the lifting platform 392 has guide holes 3921 corresponding to the guide rods 3912 of the two base bodies 3911, and the lifting platform 392 is slidably sleeved on the base 391 through the guide holes 3921. On the guide rod 3912 of the base 391, the guide rod 3912 guides the lifting and lowering of the lifting platform 392. And in this embodiment, the lifting platform 392 is also provided with a bottle drop opening 3923. The bottle dropping opening 3923 is located between the two guide holes 3921 and penetrates the top and bottom surfaces of the lifting platform 392. The plastic bottles after demoulding are completed The product 40 can fall to the outside of the lifting platform 392 through the bottle drop opening 3923 under the action of its own gravity. The lifting driving member 393 is connected with the lifting platform 392 to drive the lifting platform 392 to move vertically. In this embodiment, the number of the lifting driving members 393 is two. The two lifting driving members 393 are respectively installed on the two base bodies 3911 and connected to the two ends of the lifting platform 392 respectively. The lifting driving member 393 can be a conventional air cylinder, an oil cylinder, etc., which is not limited by the present invention. In addition, in other embodiments, the number of the lifting driving member 393 can also be set to one or two or more other numbers. The two clamping parts 394 are arranged relatively spaced apart. Each clamping part 394 includes a clamping driving part 3941 installed on the lifting platform 392 and a clamping plate 3942 connected to the clamping driving part 3941. The clamping plates 3942 of the two clamping parts 394 are respectively Located on opposite sides of the core mold assembly 36 of the corresponding station, and can be driven close to each other by the clamping driving member 3941 to clamp the plastic bottle product 40 formed on the core mold assembly 36 of the corresponding station, or to each other. Move away to release the plastic bottle product 40 formed on the core mold assembly 36 of the corresponding station. In this embodiment, the clamping driving member 3941 can use an existing air cylinder, an oil cylinder, etc., which is not limited by the present invention. In addition, the lifting platform 392 is also provided with a guide slot 3924 corresponding to the clamping plate 3942. The clamping plate 3942 is slidably disposed at the guide slot 3924, thereby guiding the movement of the clamping plate 3942 and making the movement of the clamping plate 3942 more stable. In this embodiment, the side of each clamping plate 3942 facing the other clamping plate 3942 is also provided with a plurality of grooves 3943 corresponding to the plurality of core molds 361 in the core mold assembly 36. When the clamping member 394 is in the clamping state, When the two plying plates 3942 are close to each other, the corresponding grooves 3943 of the two plying plates 3942 form a clamping groove (not labeled). The clamping groove is used to clamp the screw mouth part of the plastic bottle product 40 on a core mold 361. , making the clamping more stable; the multiple clamping grooves formed on the splint 3942 can clamp multiple plastic bottle products 40 formed on the core mold assembly 36 at the same time, making it more convenient to use.

Please refer to Figure 6 again. The core mold cooling assembly 38 may include a cavity mold 381 installed on the fixed panel 311 of the fixed base 31. The cavity mold 381 is equipped with a gas line joint 382. The gas line joint 382 is used to connect the air inlet pipe. (not shown); the cavity mold 381 is provided with a plurality of cavities 383 connected with the air connection 382; when in use, the plurality of core molds 361 of the core mold cooling assembly 38 can be respectively inserted into the plurality of molds of the cavity mold 381. In the cavity 383, low-temperature gas is introduced into the cavity 383 through the air inlet pipe, thereby cooling the core mold cooling assembly 38. It can be understood that the structure of the core mold cooling assembly 38 is not limited to this embodiment. For example, in other embodiments, the core mold cooling assembly 38 may only include a blow pipe (not shown) installed on the fixed base 31. During use, Air can be blown toward the core mold assembly 36 through an air blowing pipe, thereby cooling a predetermined portion of the core mold assembly 36 .

The core mold assembly 36 is installed on the turntable 341 and can cooperate with the injection mold 35 to form a parison wrapped on the core mold assembly 36, and the core mold assembly 36 can rotate with the turntable 341 to wrap the parison. The parison on the mandrel assembly 36 is rotated to the next station. In this embodiment, the vertical multi-station injection blow molding machine includes four sets of core mold assemblies 36, which are evenly spaced around the rotation center of the turntable 341. The four sets of core mold assemblies 36 are respectively Corresponding to four work stations, each set of core mold assemblies 36 may include more than two core molds 361 . The production efficiency can be further improved by the four sets of mandrel mold assemblies 36 respectively cooperating with the components at the four stations. The structure of the core mold assembly 36 belongs to the prior art, and will not be described in detail here to save space. In addition, in this embodiment, in order to better coordinate the mandrel mold assembly 36 with the components on the four workstations, in this embodiment, the lower moving template 331 is provided with escape grooves 334 and escape holes 335. The escape groove 334 is directly facing the die assembly 353, and the core mold assembly 36 can be inserted into the die assembly 353 and the injection cavity assembly 351 sequentially through the escape groove 334 for operation; the escape hole 335 is provided in the lower moving template 331. At approximately the center position, the core mold assembly 36 can be selectively inserted into the bottle blowing mold assembly 372, the bottle removal assembly 39 and the core mold cooling assembly 38 via the escape hole 335 for operation.

The injection system 20 is used for injection molding into the hot runner of the injection cavity assembly 351 of the injection mold. The structure of the injection system 20 belongs to the existing technology. For example, please refer to the injection system in the Chinese utility model patent CN208896471U. To save space, the details will not be described here.

When the vertical multi-station injection blow molding machine is working, the lower platen driver 336 pulls the lower platen 331 downward, and at the same time the upper platen driver 323 pushes the upper platen 321 down. After the lower platen 331 and After the upper moving template 321 moves down to the position, the upper moving template driving part 323, that is, the mold locking cylinder performs pressurization and mold locking, so that the injection cavity assembly 351, the core mold assembly 36 and the die assembly 353 are pressed together to achieve closure. Then, the injection system 20 performs injection molding into the hot runner of the injection cavity assembly 351 to obtain a parison. After the parison injection molding is pressure-maintained and cooled, the upper template driving part 323 is moved, that is, the mold locking cylinder releases the pressure. Then, the lower template driving part 336 pushes the lower template 331 upward, and at the same time, the upper template driver 323 also drives the upper template 321 It goes up to the preset height and stops, so that the core mold assembly 36, the mouth mold assembly 353 and the injection molded parison are separated from the injection cavity assembly 351. After that, by opening the mouth mold assembly 353, the mouth mold assembly 353 Separate from the parison, at this time, the parison is only tightly wrapped around the core mold assembly 36. Then, the upper movable template 321 is driven by the upper movable template driving member 323 to continue upward to a preset height and then stops, so that the core mold assembly 36 and the parison tightly wrapped on the core mold assembly 36 move vertically until they are separated from the mouth mold set. 353. After that, the rotating driving member 343 drives the turntable 341 to rotate the core mold assembly 36 with the parison to the next station. In this embodiment, the wrapped parison is rotated through the core mold assembly 36. Blow to the blow molding mold 37 to obtain a hollow plastic bottle product 40 .

After that, the bottle blowing mold assembly 372 opens the mold, and the template driving member 323 is moved up to drive the core mold assembly 36 and the hollow plastic bottle product 40 is separated from the bottle blowing mold assembly 372, and the blow molded plastic bottle product 40 follows the core. The mold assembly 36 is rotated by the turntable 341 to the bottle removal assembly 39, and the plastic bottle product 40 is detached from the core mold assembly 36 through the action of the bottle removal assembly 39. Specifically, the plastic bottle product 40 after blow molding is removed from the core mold assembly. The component 36 rotates to the bottle removal station, and the upper moving template driving component 323 drives the core mold assembly 36 and the plastic bottle product 40 on the moving core mold assembly 36 downward, so that the screw mouth part of the plastic bottle product 40 is located on the splint. 3942; then, the clamping driving part 3941 pushes the two clamping plates 3942 to approach each other, clamps the screw mouth part of the plastic bottle product 40 through the two clamping plates 3942, and then pulls the lifting platform 392 downward along the guide rod 3912 through the lifting driving part 393. Move a certain distance to release the plastic bottle product 40 from the core mold assembly 36; finally, the clamping driver 3941 pushes the two clamping plates 3942 away from each other to release the clamped plastic bottle product 40, and the plastic bottle product 40 is released from the core mold assembly 36. The bottle mouth 3923 falls naturally, completing demolding.

Subsequently, the core mold assembly 36 is rotated by the turntable 341 to the core mold cooling assembly 38 for cooling, waiting for the next operation. And when the vertical multi-station injection blow hollow molding machine of this embodiment is working, while the injection mold 35 is injecting the parison, the blow molding mold 37 is blowing the bottle, and the bottle removal assembly 39 is removing the bottle, and the core is The mold cooling assembly 38 performs core mold cooling. By repeating this cycle, vertical multi-station injection blow molding can be realized. The entire process only uses one set of die components 353, and can realize core mold cooling and other process requirements.

In the vertical multi-station injection blow molding machine of this embodiment, the core mold 361 of the core mold assembly 36 is arranged vertically. The core mold assembly 36 rotates intermittently with the turntable 341 with a vertical axis as the rotation center. The entire set of molds There is only one set of die assemblies 353. The die assemblies 353 are opened when the mold is moved up to the preset position. They do not rotate with the turntable 341, but drive the parison to rotate to the next station through the core die assembly 36. Therefore, compared with the horizontal multi-station injection blow molding machine in the prior art in which the core mold is arranged horizontally, the core mold assembly 36 of the vertical multi-station injection blow molding machine of the present invention is arranged in a vertical direction. The axis is the intermittent rotation of the center of rotation, which can reduce the probability of the parison being bent and deformed due to air resistance or centrifugal force during the rotation of the turntable 341; because the mandrel assembly 36 extends from the bottle mouth of the parison to the mold Therefore, compared with the injection stretch blow molding machine in the prior art that only drives the parison to rotate through the mouth mold assembly outside the bottle mouth of the parison, the core mold assembly 36 of the present invention and the parison The contact area is larger, and the mandrel assembly 36 located inside the parison can provide better support for the parison during the rotation of the parison, preventing the parison from being subjected to air resistance or air resistance during rotation with the rotating disk 341. The bending deformation occurs due to the centrifugal force or the shrinkage of natural cooling, which improves the yield of the product. And compared with the existing vertical multi-station injection blow molding machine, since the vertical multi-station injection blow molding machine of this embodiment only requires one set of die components 353, its mold cost is lower. .

In the vertical multi-station injection blow hollow molding machine of this embodiment, the breather tube is connected to the air blowing assembly 371. The breather tube of the air blowing assembly 371 is connected to the air blowing mold 3715 through the air joint, and the air blowing is driven by the air blowing driver 3714. The mold 3715 moves closer to or away from the core mold assembly 36 so that the air mold 3715 is docked or separated from the core mold assembly 36, which can prevent the breather tube from being entangled during the rotation of the turntable 341.

The vertical multi-station injection blow molding machine of this embodiment adopts vertical vertical injection blow molding. Compared with the horizontal multi-station injection blow molding machine, the products obtained have better uniformity and higher quality. When the existing vertical multi-station injection blow molding machine produces small-diameter bottles, the mandrel is too small to carry water for cooling. As a result, the mandrel cannot maintain a constant temperature during the production process, and the parison often sticks to the mandrel. It cannot be inflated and cannot continuously produce qualified small-diameter bottles. In the vertical multi-station injection blow molding machine of this embodiment, since the blowing assembly 371 and the die assembly 353 do not need to rotate, it is possible to avoid the occurrence of pipes connected to the blowing assembly 371 and the die assembly 353. Winding, so that the turntable 341 can only rotate in one direction, so that an independent station can be conveniently set up, that is, the core mold cooling assembly 38 cools the core mold that is about to be injection molded, and can continuously produce qualified small-diameter bottles. , making the molding process wider, with lower requirements for molding raw materials and a wider selection of raw materials. And because the turntable 341 does not need to rotate back and forth, it can only rotate in one direction, which is beneficial to improving production efficiency and making it easier to control.

It can be understood that the number of stations of the vertical multi-station injection blow blow molding machine is not limited to four in this embodiment. For example, in other embodiments, the core mold cooling assembly 38 may not be provided; or it may be based on process needs. , replace the core mold cooling assembly 38 with the core mold insulation assembly of the prior art, which is used to insulate the core mold; or other work stations can be added as needed.

It can be understood that the structure of the fixed base 31 is not limited to this embodiment, and it can also be adjusted according to actual needs.

The above description is a detailed description of the preferred and feasible embodiments of the present invention, but the embodiments are not intended to limit the scope of the patent application of the present invention. All equivalent changes or modifications made within the technical spirit of the present invention shall belong to This invention is covered by patent scope.

Claims (10)

1. The utility model provides a vertical multistation annotates blows cavity make-up machine, includes frame (10) and installs injection moulding mode locking mechanism (30) on frame (10), its characterized in that, injection moulding mode locking mechanism (30) include:

the fixed seat (31), the fixed seat (31) is installed on the frame (10), and the fixed seat (31) is provided with at least two stations at intervals;

the upper movable template assembly (32) comprises an upper movable template (321) and an upper movable template driving piece (323), wherein the upper movable template (321) is slidably arranged on the fixed seat (31), and the upper movable template driving piece (323) is connected with the upper movable template (321) so as to drive the upper movable template (321) to vertically reciprocate;

the lower movable die plate assembly (33) comprises a lower movable die plate (331) and a lower movable die plate driving piece (336), wherein the lower movable die plate (331) is positioned below the upper movable die plate (321), and the lower movable die plate (331) is slidingly arranged on the fixed seat (31); the lower movable die plate driving piece (336) is connected with the lower movable die plate (331) to drive the lower movable die plate (331) to reciprocate vertically;

the rotary disc assembly (34) comprises a rotary disc (341) and a rotary driving piece (343), wherein the rotary disc (341) is positioned between the upper movable die plate (321) and the lower movable die plate (331), and the rotary driving piece (343) is arranged on the upper movable die plate (321) and is connected with the rotary disc (341) so as to drive the rotary disc (341) to intermittently rotate by taking a vertical axis as a rotation center; and

the blank injection mold (35) comprises an injection cavity assembly (351) and a die assembly (353), wherein the injection cavity assembly (351) is arranged at one station of the fixed seat (31) and is positioned below the lower movable mold plate (331); the die assembly (353) is arranged on the lower movable die plate (331) and is positioned right above the injection cavity assembly (351); and

A mandrel assembly (36), the mandrel assembly (36) is mounted on the turntable (341), the mandrel assembly (36) is capable of cooperating with the blank injection mold (35) to form a parison wrapped on the mandrel assembly (36), and the mandrel assembly (36) is capable of rotating with the turntable (341) to rotate the parison wrapped on the mandrel assembly (36) to the next station.

2. The vertical multi-station injection blow hollow molding machine according to claim 1, wherein the injection mold locking mechanism (30) comprises a blow molding mold (37), the blow molding mold (37) comprises a blowing component (371) and a bottle blowing mold component (372) located right below the blowing component (371), the blowing component (371) is installed on the upper movable mold plate (321), and the bottle blowing mold component (372) is installed on other stations of the fixed seat (31) and located below the lower movable mold plate (331).

3. The vertical multi-station injection blow hollow molding machine according to claim 2, wherein four stations are arranged at intervals along the rotation direction of the turntable (341) on the fixing seat (31), the bottle removing assembly (39) and the core mold cooling assembly (38) are arranged on the fixing seat (31) and below the lower movable mold plate (331), and the injection cavity assembly (351), the bottle blowing mold assembly (372), the bottle removing assembly (39) and the core mold cooling assembly (38) are sequentially arranged at the four stations along the rotation direction of the turntable (341).

4. A vertical multi-station injection blow hollow molding machine according to claim 3, wherein said injection mold comprises four sets of said core mold assemblies (36), said four sets of said core mold assemblies (36) being disposed at regular intervals around the center of rotation of said turntable (341), said four sets of said core mold assemblies (36) corresponding to each of said four stations.

5. A vertical multi-station injection blow hollow molding machine according to claim 3, wherein a clearance groove (334) is formed in the lower moving platen (331), the clearance groove (334) is opposite to the die assembly (353), and the core mold assembly (36) can be sequentially inserted into the die assembly (353) and the injection cavity assembly (351) through the clearance groove (334).

6. The vertical multi-station injection blow hollow molding machine according to claim 2, wherein the blow assembly (371) comprises a support frame (3711), a blow driving piece (3714) and a blow mold (3715), the support frame (3711) is fixed on the upper movable mold plate (321), the blow driving piece (3714) is arranged on the support frame (3711) and is connected with the blow mold (3715), the blow mold (3715) is provided with an air passage connector, the air passage connector is used for connecting a vent pipe, and an air inlet channel communicated with the air passage connector is arranged in the blow mold (3715); the blow drive (3714) can drive the blow mold (3715) toward the core mold assembly (36) until the blow mold (3715) interfaces with the core mold assembly (36) at the blow station and places the air intake channel in communication with the core mold assembly (36), or the blow drive (3714) can drive the movement of the blow mold (3715) away from the core mold assembly (36) until the blow mold (3715) is separated from the core mold assembly (36).

7. The vertical multi-station injection blow molding machine according to claim 1, wherein the upper movable platen driving member (323) and the lower movable platen driving member (336) are both mounted on the fixed base (31).

8. The vertical multi-station injection blow hollow molding machine according to claim 7, wherein the fixing base (31) comprises a fixing panel (311), a guide post (313) and a mounting plate (314), the fixing panel (311) is fixed at the bottom end of the guide post (313), the mounting plate (314) is fixed at the top end of the guide post (313), the upper movable mold plate (321) and the lower movable mold plate (331) are arranged between the fixing panel (311) and the mounting plate (314) in parallel and are both arranged on the guide post (313) in a sliding manner, the upper movable mold plate driving part (323) is arranged on the mounting plate (314), the lower movable mold plate driving part (336) is arranged on the fixing panel (311), and the station is arranged on the fixing panel (311).

9. The vertical multi-station injection blow hollow molding machine according to claim 1, wherein the upper movable mold plate driving member (323) is a mold locking cylinder, and the lower movable mold plate driving member (336) comprises a plurality of lifting cylinders which are distributed at intervals along the circumferential direction of the lower movable mold plate (331).

10. A vertical multi-station injection blow molding machine as claimed in claim 3, wherein the bottle-removing assembly (39) comprises a base (391), a lifting table (392), a lifting driving member (393) and two clamping members (394), the base (391) being fixed on the fixed seat (31); the lifting table (392) is connected with the base (391) in a sliding way; the lifting driving piece (393) is connected with the lifting table (392) to drive the lifting table (392) to move vertically; the two clamping pieces (394) are oppositely arranged at intervals, each clamping piece (394) comprises a clamping driving piece (3941) arranged on the lifting table (392) and clamping plates (3942) connected with the clamping driving piece (3941), the clamping plates (3942) of the two clamping pieces (394) are respectively positioned on two opposite sides of the core module (36) of the corresponding station, and can be driven by the clamping driving pieces (3941) to mutually approach to clamp plastic bottle products molded on the core module (36) of the corresponding station or mutually depart from each other to release plastic bottle products molded on the core module (36) of the corresponding station.