CN114643695A

CN114643695A - Injection stretch blow molding machine for online integration of double equipment

Info

Publication number: CN114643695A
Application number: CN202210545055.5A
Authority: CN
Inventors: 陈艺力; 高寿; 关红民
Original assignee: Foshan Gongzheng Packaging Equipment Technology Co ltd
Current assignee: Foshan Gongzheng Packaging Equipment Technology Co ltd
Priority date: 2022-05-19
Filing date: 2022-05-19
Publication date: 2022-06-21
Anticipated expiration: 2042-05-19
Also published as: CN114643695B

Abstract

The invention discloses an injection stretch blow molding machine integrated by double equipment on line, belonging to the field of plastic blow molding manufacturing of plastic bottles and solving the problems of production quality and production efficiency Specification, color, bottle type.

Description

Injection stretch blow molding machine integrated by double equipment on line

Technical Field

The invention relates to the field of plastic blow molding manufacturing of plastic bottles, in particular to an injection stretch blow molding machine integrated by double equipment on line.

Background

At present, chinese patent application No. 202110019341.3 discloses a one-step injection stretch blow molding apparatus and a molding method thereof, which comprises: the device comprises a frame, a lifting mechanism and a rotating mechanism, wherein the frame comprises a base, a lower die carrier, a plurality of Green columns, an upper die carrier, a rotary disc frame, a rotary disc which is intermittently and rotatably conveyed, the lifting mechanism and the rotating mechanism; the four groups of die assemblies comprise a holding plate and a die held on the holding plate; the bottle blank forming mechanism is configured at the bottle blank forming station; the bottle blank heating mechanism is configured at the bottle blank heating station; a blow molding mechanism disposed at the blow molding station; and the product taking-out mechanism is configured at the product taking-out station.

In the prior art for manufacturing bottle products, a single device is adopted to complete the production of bottles, wherein in order to improve the production efficiency of the device, a multi-cavity bottle mold structure is utilized, however, as can be seen, the production efficiency is felt to reach the bottleneck, and the difficulty breaks through the improvement of the production efficiency. In addition, in terms of production quality, in the prior art, subsequent quality inspection work is required, and the produced product is detected through additional detection equipment.

It should be noted that some products which do not require high processing accuracy and quality do not require such operations, but there is a demand for further improvement in some special bottles such as medicine bottles, opaque bottles, and the like. Here, a vial for storing a light-shielding chemical agent will be explained as an example. It is known that some drugs or chemical reagents need to be protected from light during storage in plastic bottles, because light irradiation can decompose drugs such as vitamin D, and many drugs need to be protected from light, such as sodium nitroprusside, which is a special grade light-resistant drug, have very high sensitivity to light and poor stability of a solution, and therefore, the drugs or chemical reagents need to be stored in a light-resistant manner, which is not exemplified herein. It is thus demonstrated that the production of such bottles, based on the solution of the above-mentioned reference 1, has not been satisfactory.

Nowadays, the major contradiction between production efficiency and quality needs to be solved first, and the minor contradiction between the expansion of the product types is overcome.

Disclosure of Invention

The invention aims to overcome the defects in the prior art, at least solves the technical problems in the related technology to a certain extent, and provides the injection stretch blow molding machine integrated by double equipment on line, which has the advantages of improving the production efficiency and reducing the volume occupancy rate of the equipment.

In order to solve the technical problems, the technical scheme of the invention is as follows: the utility model provides an annotate that online integration of dual equipment draws and blows make-up machine, draws and blows the shaping unit including two notes, annotates and draws and blow the shaping unit and include injection platform and forming device, and the injection platform is located forming device's injection moulding station side and arranges, and two injection platforms arrange with the rotatory 180 degrees in center, and two mutual symmetries of forming device arrange, annotate and draw and blow the shaping unit and be controlled by the main control system, the main control system controls two notes alone and draw and blow the shaping unit or control two notes simultaneously and draw and blow the shaping unit work.

Preferably, the molding apparatus comprises a mold for molding,

the bottle mold assembly comprises a bottle mold assembly, a lifting driving mechanism, a rotary driving mechanism and a rotary table, wherein the bottle mold assembly is arranged below the rotary table, the lifting driving mechanism drives the rotary table to lift so as to drive the bottle mold assembly to act, the rotary driving mechanism drives the rotary table to rotate so as to rotationally switch four stations of the bottle mold assembly, the four stations are an injection bottle blank station, a bottle blank temperature adjusting station, a stretching blow molding station and a product demolding station which are sequentially arranged in the rotary conveying direction, and a plurality of bottle body cavities are arranged in the bottle mold assembly;

the lower die mechanism comprises an injection module, a heating module, a blow molding module and a stripping module, and four modules of the lower die mechanism are positioned on four stations and correspondingly combined with four groups of bottle mold assemblies.

Preferably, the bottle mold assembly is provided with an injection channel for injecting materials after splicing of the injection modules, a temperature adjusting mounting groove for embedding the heating modules into temperature adjustment is formed in the bottle mold assembly, a blow molding air passage for connecting the blow molding modules into the bottle mold assembly for blow molding is formed in the bottle mold assembly, and an ejection structure for driving the material taking module to take materials is formed in the bottle mold assembly and is isolated from the outside before ejection and material taking.

Preferably, the injection station injects the plastic fluid into the cavity of the bottle mold assembly by applying pressure to the molten plastic fluid;

the constant temperature device is arranged on the injection cylinder of the injection platform and is used for keeping plastic fluid at constant temperature;

the pressurizing conveying pipe is arranged on the injection cylinder and is respectively connected with the constant temperature device and the injection port;

the pressure push rod is arranged in the pressurizing conveying pipe and used for pushing the plastic fluid into the cavity;

the pressure sensor is positioned on the pressure push rod and used for feeding back the pressure;

the temperature sensor is positioned on the constant temperature device and used for feeding back the real-time temperature of the molten fluid;

the main control machine is respectively connected with the constant temperature device, the pressurizing conveying pipe, the pressure push rod, the pressure sensor and the temperature sensor, respective working states are adjusted, when the injection platform injects materials into the cavity at each time, the receiving hopper conveys the materials to control the temperature, so that the raw materials form a fluid state, the pressure push rod keeps the pressure to continuously extrude and keep the fluid, the air is filtered in a discharging mode, and then the pushing fluid flows into the cavity through the closed channel.

Preferably, the control host is provided with a cavity volume value, an initial pressure selection database corresponding to the cavity volume value, an initial push fluid speed selection database, a first temperature threshold value and a second temperature threshold value, the temperature sensor feeds back the fluid temperature monitored in real time to the control host, the control host compares the real-time fluid temperature data with the first temperature threshold value and the second temperature threshold value, and an initial pressure value and an initial speed value are selected from the initial pressure selection database and the initial push fluid speed selection database according to the comparison result.

Preferably, the control host is provided with cross section data of the pressurizing delivery pipe and a standard fluid volume data range, when the pressure sensor detects that the pressure of the pressure push rod reaches an initial pressure value, the pressure push rod keeps the initial pressure value and the initial speed value, a pushing fluid volume value is calculated according to the cross section data, pushing duration data of the pressure push rod is calculated according to the comparison of standard fluid volumes, and the actual volume of the fluid is controlled to be within the standard fluid volume data range by adjusting the pushing duration data.

Preferably, a light transmittance detection assembly is arranged in the stripping module, a light transmittance qualified data range is configured in the control host, when the light transmittance detection assembly performs light transmittance detection on a product subjected to demolding, current light transmittance data is fed back to the control host, the control host compares the current light transmittance data with the current light transmittance data through data to determine whether the current light transmittance data is in the light transmittance qualified data range, the current light transmittance data is not in the light transmittance qualified data range, the standard fluid volume data range is adjusted, and the light transmittance data meeting the light transmittance qualified data range is obtained through cyclic allocation.

Preferably, the injection table is provided with a moving driving mechanism, a distance detector is arranged on the injection table,

the moving direction of the moving driving mechanism is given by a control host;

the distance detector is used for detecting real-time distance data between the end part of the injection molding table and the injection hole position of the injection molding module and transmitting the distance data to the control host, when the control host is started, the distance data is taken and serves as an initial distance value, the control host configures a plurality of stroke sections according to the initial distance value, and the stroke sections comprise an acceleration section, a first deceleration section and a second deceleration section;

when the moving driving mechanism moves forwards or backwards, when the relative distance value is in the range of an acceleration section, the moving driving mechanism is configured to accelerate, when the relative distance value is in the range of a first deceleration section, the moving driving mechanism is configured to decelerate, when the relative distance value is in the range of a second deceleration section, the moving driving mechanism is configured to decelerate to zero, when the moving driving mechanism moves forwards, the relative distance value = | the real-time distance value-the initial distance value |, and when the moving driving mechanism moves backwards, the relative distance value = the real-time distance value.

Preferably, the initial distance value is L₀The acceleration section is L₁The first deceleration section is L₂Second reduction stage L₃Then L is₀=L₁+L₂+L₃，L₁＞L₂＞L₃。

Compared with the background technology, the technical effects of the invention are mainly reflected in the following aspects:

1. the structure assembly is centralized, the space occupation is reduced, the state and the transportation are convenient, and the yield can be improved;

2. the bottle blank is not easy to contact with the outside air in the forming process, the reliability in the blow molding process can be improved, the product quality is more excellent, the requirements of some medicine bottles can be met, and the product is cleaner and more environment-friendly;

3. by adopting data acquisition and processing, the amount of injected plastic fluid can be automatically adjusted in advance, and air (bubbles) in the fluid tends to be small bubbles or discharged in a manner of extrusion and pressure maintenance, so that additives in the fluid are tighter, the density is improved by compressing the volume, meanwhile, the structural strength of the product can be improved, and the light transmittance and the toughness of the product can also be changed;

4. through the movement control in the operation process, the feeding speed can be improved, and the reliability and the safety of equipment can also be improved.

Drawings

FIG. 1 is a schematic view of the overall structure of the embodiment;

FIG. 2 is a schematic top view layout of the structure of the embodiment;

FIG. 3 is a partial schematic side view of a molding apparatus according to an embodiment;

FIG. 4 is a schematic layout of four stations in an embodiment;

FIG. 5 is a schematic cross-sectional view of the forming apparatus in the embodiment;

FIG. 6 is a schematic view of the injection table in the embodiment;

fig. 7 is a schematic diagram of the moving speed of the injection station in the embodiment.

Reference numerals are as follows: 1. injection stretch blow molding single machine; 11. an injection station; 12. a molding device; 2. a control host; 31. an upper die mechanism; 311. a bottle mold assembly; 312. a bottle body cavity; 313. a lifting drive mechanism; 314. a rotation driving mechanism; 315. a turntable; 41. a material injection module; 411. a material injection channel; 42. a heating module; 421. a temperature adjusting mounting groove; 43. a blow molding module; 431. blowing an air passage; 44. a stripping module; 441. an ejection structure;

51. a thermostatic device; 52. an injection molding barrel; 53. a pressurizing delivery pipe; 54. a pressure push rod; 55. a pressure sensor; 56. a temperature sensor; 57. a movement drive mechanism; 58. a distance detector; 61. an injection nozzle; 62. a top rod; 63. a one-way valve.

Detailed Description

The following detailed description of the embodiments of the present invention is provided in order to make the technical solution of the present invention easier to understand and understand.

Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and do not limit the scope of the present invention.

It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Example 1:

an injection stretch blow molding machine integrated with a double-equipment on-line is disclosed, which is shown in fig. 1 and fig. 2, and comprises two injection stretch blow molding single machines 1, wherein each injection stretch blow molding single machine 1 comprises an injection table 11 and a molding device 12, the injection table 11 is arranged on the side face of an injection molding station of the molding device 12, the two injection stretch blow molding single machines are arranged on a bracket as shown in fig. 1 and fig. 2 and controlled by a control host machine 2, and the control host machine 2 controls the two injection stretch blow molding single machines 1 independently or controls the two injection stretch blow molding single machines 1 to work simultaneously.

Efficiency is improved, be convenient for transportation, installation, dismantlement, the linkage is controlled, and visual design can reduce artifical intensity of labour, improves quality and output. Above-mentioned implementation structure reduces and takes up an area of, and equipment can share the oil tank, saves the cost reduce cost, improves production efficiency. The control host can be independently controlled, does not interfere with each other, has dual-mode linkage, and can produce bottles with different materials, specifications, colors and bottle types. And visualizing the operation process.

Example 2:

based on embodiment 1, as shown in fig. 3, the forming device 12 specifically includes:

the upper mold mechanism 31, the upper mold mechanism 31 includes four sets of bottle mold assemblies 311, a lifting drive mechanism 313, a rotation drive mechanism 314, and a turntable 315. In the present embodiment, the structure of the mounting bracket is not specifically described, and the design point of the present solution lies in the structural drive, and the prior art structure can be referred to with respect to the bracket and the mounting structure. In the present embodiment, four sets of bottle mold assemblies 311 are installed below the turntable 315, the lifting driving mechanism 313 drives the turntable 315 to lift and lower to drive the bottle mold assemblies 311 to move, the rotating driving mechanism 314 drives the turntable 315 to rotate to switch four stations of the bottle mold assemblies 311, the four stations are respectively an injection bottle blank station, a bottle blank temperature adjusting station, a stretch blow molding station and a product demolding station, which are sequentially arranged in the rotating conveying direction, and the bottle mold assemblies 311 are internally provided with a plurality of bottle body cavities 312. The four stations are shown with reference to figure 4.

In the upper mold mechanism 31, four sets of bottle mold assemblies 311 are designed, each bottle mold assembly 311 has the same structure and four configurations, and is mounted on the turntable 315, and by driving the turntable 315 to rotate, four different orientations, that is, four different stations, can be switched.

Referring to fig. 5, regarding the lower mold mechanism, the lower mold mechanism includes an injection module 41, a heating module 42, a blow molding module 43, and a stripper module 44, and four modules of the lower mold mechanism are correspondingly combined with four sets of bottle mold assemblies 311 at four stations. The lower mold mechanism may be assembled with the bottle mold assembly 311 or may be installed separately from each other. The combination or separation of the functional modules of the bottle mold assembly 311 and the lower mold mechanism is realized through the function of up-down lifting.

In the implementation of this scheme, the adaptation has the notes material passageway 411 that supplies annotating the material module 41 to splice and carry out the notes material on the bottle mould subassembly 311, and the adaptation has the temperature regulation mounting groove 421 that supplies heating module 42 embedding to adjust the temperature, and the adaptation has the blowing air flue 431 that supplies blowing module 43 to insert to carry out the blowing, and the adaptation has the ejecting structure 441 that supplies the stripping module 44 to drive and get the material, and wherein, before ejecting the material of getting, the whole die cavity that is in bottle mould subassembly 311 is kept apart from the external world.

This scheme design like this, consider that outside air or dust cause the influence to the bottle embryo easily, so adopt this structure assembly mode, can realize that a plurality of functions are integrated at a bottle mould subassembly 311, also can separate the change simultaneously.

The use process comprises the following steps: when the fluid material enters the material injection channel 411 of the material injection module 41 and then enters the cavity of the bottle mold assembly 311, a bottle blank is formed first, then the temperature is controlled by the heating module 42, blow molding is performed, and finally the bottle product is formed by demolding. In the processing process, the bottle is shaped in the cavity without contacting the outside, so that the influence of dust on fluid or the bottle body is greatly reduced.

Example 3:

based on examples 1 and 2, this solution allows for the problem and operation of fluid injection.

The scheme is implemented specifically as follows:

referring to fig. 6, the injection station 11 injects the plastic fluid into the cavity of the bottle mold assembly 311 by applying pressure to the molten plastic fluid. And the constant temperature device 51 is arranged on the injection cylinder 52 of the injection platform 11 and is used for keeping the plastic fluid at constant temperature. And a pressurizing delivery pipe 53 which is arranged on the injection cylinder 52 and is respectively connected with the constant temperature device 51 and the injection port. And a pressure ram 54 disposed within the pressurized feed tube 53 for forcing the plastic fluid into the mold cavity. And the pressure sensor 55 is positioned on the pressure push rod 54 and used for feeding back the pressure. And a temperature sensor 56 is positioned on the constant temperature device 51 and used for feeding back the real-time temperature of the molten fluid. The structure principle of the pressurizing delivery pipe 53 is that the pressurizing delivery pipe 53 continuously extrudes fluid by the action of the push rod and the inner cavity, at first, the pressurizing delivery pipe 53 is in a closed state, the front end of the pressurizing delivery pipe is provided with the injection nozzle 61, the inner side of the injection nozzle 61 is provided with a one-way valve structure, the one-way valve structure is pushed by the external push rod 62 to open and begin to discharge the fluid, and the other one is in a closed state. As can be seen from fig. 6, the fluid is squeezed by the push rod, and when the check valve is in the closed state, the fluid is squeezed. When the injection module 41 of the lower mold mechanism has the ejector pin 62, the fluid passage is opened and injected into the cavity through the injection module 41 when the injection stage 11 moves to the position of the ejector pin 62 and the check valve is ejected by the ejector pin 62.

Wherein, the inner side of the injection nozzle 61 is provided with a one-way valve structure, and the injection nozzle can be a square cross section structure or a round cross section structure. The specific structure of the one-way valve is not the key point of the scheme and is not specifically explained, and the function of the one-way valve is utilized to realize the stop and conduction control function of the injection nozzle in the scheme.

The control host machine 2 is respectively connected with the constant temperature device 51, the pressurization conveying pipe 53, the pressure push rod 54, the pressure sensor 55 and the temperature sensor 56, respective working states are adjusted, when the injection table 11 injects materials into the cavity each time, the temperature of the materials conveyed by the receiving hopper is controlled, so that the raw materials form a fluid state, the pressure push rod 54 keeps pressure to continuously extrude and keep the fluid, filtered air is discharged, and then the fluid is pushed to flow into the cavity through a closed channel.

The control host 2 is provided with a cavity volume value, an initial pressure selection database corresponding to the cavity volume value, an initial push fluid speed selection database, a first temperature threshold value and a second temperature threshold value, the temperature sensor 56 feeds back the fluid temperature monitored in real time to the control host 2, the control host 2 compares the real-time fluid temperature data with the first temperature threshold value and the second temperature threshold value, and selects an initial pressure value and an initial speed value in the initial pressure selection database and the initial push fluid speed selection database according to the comparison result.

The control host 2 is provided with cross section data of the pressurizing delivery pipe 53 and a standard fluid volume data range, when the pressure sensor 55 detects that the pressure of the pressure push rod 54 reaches an initial pressure value, the pressure push rod 54 maintains the initial pressure value and the initial speed value, a pushing fluid volume value is calculated according to the cross section data, pushing duration data of the pressure push rod 54 is calculated according to the comparison of standard fluid volumes, and the actual volume of the fluid is controlled to be within the standard fluid volume data range by adjusting the pushing duration data.

Be provided with luminousness detection subassembly in the material removal module 44, dispose luminousness qualification data range in the control host 2, the current luminousness data of feedback is given control host 2 after the luminousness detection subassembly carries out the printing opacity to the product after the drawing of patterns, control host 2 is in luminousness qualification data range through the current luminousness data of data contrast, current luminousness data is not in luminousness qualification data range, then adjust standard fluid volume data range, allocate through the circulation, it satisfies luminousness qualification data range to reach luminousness data.

At the beginning of production, the plastic granules enter from the hopper, are preheated, softened and stirred to form a fluid state (conventional pre-operation in the prior art, and therefore not in the design of the present solution, but only for supplement to the understanding of the present solution), and are conveyed by the screw extrusion conveying device, and the fluid flows through the channel and firstly flows into the pressurizing conveying pipe 53 shown in fig. 6, wherein the fluid flows into the closed space formed by the pressurizing conveying pipe 53 from the middle of the hollow pressure push rod 54. In the process, the problems of air and uneven density in the fluid need to be considered, and in order to make the fluid density suitable, and the air or the air bubbles are few or small, the fluid needs to be quantified, extruded and continuously extruded, and a certain extrusion thrust is kept, so that the fluid becomes more compact.

By the scheme of embodiment 3, the control host 2 compares the real-time temperature of the fluid with the first initial temperature and the second initial temperature, selects a corresponding initial pressure and initial injection speed (speed of the initial push rod) from the initial pressure database and the initial injection speed database of the cavity volume, the control host 2 further calculates the punching volume according to the selected initial injection speed, the residence time and the cross-sectional area of the pipeline pressure chamber, and the control host 2 adjusts the push rod speed according to the comparison of the punching volume and the internally set standard value to enable the configured volume of the fluid to reach the standard value, thereby ensuring the compactness of the bottle product, and avoiding the occurrence of defects of the product to the greatest extent.

A cavity volume Mx, an initial pressure data set Pa of a cavity volume value inside the mold in the control host 2, and Pa (P1, P2, P3) are set, wherein P1 represents a preset first initial pressure, P2 represents a preset second initial pressure, P3 represents a preset third initial pressure, and P1 is more than P2 and is more than P3; setting Va (V1, V2 and V3) by setting an initial speed data set Va of the volume value of the cavity inside the die in the control host machine 2, wherein V1 represents a preset first initial speed, V2 represents a preset second initial speed, V3 represents a preset third initial speed, and V1 is more than V2 and more than V3; the control host 2 is also internally provided with a first initial temperature T1 and a second initial temperature T2, wherein T1 is more than T2; the injection temperature sensor 56 detects a real-time temperature Ts, and the central control module compares the real-time temperature Ts with the first initial molten metal temperature T1 and the second initial molten metal temperature T2.

When Ts is less than T1, the control host machine 2 selects the initial pressure to be P1 and the initial speed to be V1; when T1 is more than or equal to Ts and less than T2, selecting the initial pressure as P2 and the initial speed as V2; when Ts is less than or equal to T2, the initial pressure is P3 and the initial speed is V3.

Knowing the cavity volume Mx, the volume of fluid Mx is also required in the chamber of the pressurized delivery tube 53, and the corresponding volume of fluid is first dispensed and then injected into the cavity. As can be known, Ms is Va × t1 × S, the speed Va of the push rod pushing, the time t1 of the push rod pushing, and the cross-sectional area of the inner cavity of the pressure-increasing delivery tube 53 is S. In order to improve the accuracy, the deviation between the controlled fluid volume value and the standard value can be controlled by comparison, so that the required cavity volume value is formed.

Due to the adjustment, the volume control of the fluid is increased, so that the proper volume can be quickly controlled, and at the moment, because the fluid is controlled, the light transmittance, the hardness and the thickness can be effectively controlled, so that the product quality can be improved.

Example 4:

referring to fig. 5 and 6, based on embodiment 1 and any one of the above embodiments, the injection table 11 is provided with a movement drive mechanism 57, and a distance detector 58 is provided on the injection table 11. The direction of movement of the movement drive mechanism 57 is given by the control host 2 a direction command. And the distance detector 58 is used for detecting real-time distance data between the end part of the injection molding table and the injection hole position of the injection molding module 41, transmitting the distance data to the control host 2, calling the distance data and taking the distance data as an initial distance value after the control host 2 is started, and configuring a plurality of stroke sections by the control host 2 according to the initial distance value, wherein the stroke sections comprise an acceleration section, a first deceleration section and a second deceleration section.

When the movement driving mechanism 57 moves forward or backward, the movement driving mechanism 57 is configured to accelerate when the relative distance value is in the acceleration range, the movement driving mechanism 57 is configured to decelerate when the relative distance value is in the first deceleration range, the movement driving mechanism 57 is configured to decelerate to zero when the relative distance value is in the second deceleration range, the relative distance value = | real-time distance value — initial distance value | when the movement driving mechanism 57 moves forward, and the relative distance value = real-time distance value when the movement driving mechanism 57 moves backward.

With reference to fig. 7, the above solution overcomes the problem of efficiency and safety concerns during the movement of the injection table 11 by the movement driving mechanism 57. In this embodiment, it is known that the injection stage 11 is pushed to move forward and backward to effectively inject the fluid into the cavity, and the process is repeated once. If ordinary speed control is used, it is inefficient, and if the speed is too high, it is liable to cause damage to the equipment, wherein particularly when the jack 62 and the check valve are in contact, low speed control is required, or the check valve is liable to be damaged or the jack 62 is liable to be damaged.

After this scheme of use, at first, at the beginning, speed is very fast, then slows down, then is very slow when being close to ejector pin 62, from this one, makes course of working efficiency higher, and work safe and reliable more prolongs equipment life. In fig. 7 is illustrated a diagram of the speed and time at which the injection station 11 is moved.

The above are only typical examples of the present invention, and besides, the present invention may have other embodiments, and all the technical solutions formed by equivalent substitutions or equivalent changes are within the scope of the present invention as claimed.

Claims

1. The utility model provides an injection of online integration of twin plant draws and blows make-up machine, includes two injection draw and blow make-up units (1), characterized by: annotate and draw blow molding unit (1) including injection platform (11) and forming device (12), injection platform (11) are located the station side of moulding plastics of forming device (12) and arrange, and two injection platforms (11) are arranged with the rotatory 180 degrees in center, and two mutual symmetries of forming device (12) are arranged, and notes are drawn and are blown molding unit (1) and be controlled by main control system (2), main control system (2) two notes are drawn and are blown molding unit (1) or two notes are drawn and are blown molding unit (1) work of simultaneous control alone.

2. The dual-equipment on-line integrated injection stretch blow molding machine of claim 1, wherein: the forming device (12) comprises a mould,

the bottle mold assembling device comprises an upper mold mechanism (31), wherein the upper mold mechanism (31) comprises four groups of bottle mold assemblies (311), a lifting driving mechanism (313), a rotary driving mechanism (314) and a turntable (315), the four groups of bottle mold assemblies (311) are arranged below the turntable (315), the lifting driving mechanism (313) drives the turntable (315) to lift so as to drive the bottle mold assemblies (311) to act, the rotary driving mechanism (314) drives the turntable (315) to rotate so as to rotationally switch four stations of the bottle mold assemblies (311), the four stations are respectively an injection bottle blank station, a bottle blank temperature adjusting station, a stretching blow molding station and a product demolding station which are sequentially arranged in the rotary conveying direction, and a plurality of bottle mold assemblies (311) are arranged in the bottle mold assemblies (311);

the lower die mechanism comprises an injection module (41), a heating module (42), a blow molding module (43) and a stripping module (44), and four modules of the lower die mechanism are positioned on four stations and correspondingly combined with four groups of bottle mold assemblies (311).

3. The dual-equipment on-line integrated injection stretch blow molding machine of claim 2, wherein: the bottle mold assembly (311) is provided with an injection channel (411) for injecting materials after splicing of the material injection module (41), a temperature adjusting installation groove (421) for embedding the heating module (42) for adjusting the temperature, a blow molding air channel (431) for connecting the blow molding module (43) for blow molding, and an ejection structure (441) for driving the material taking module (44) to take materials, wherein the bottle embryo is integrally positioned in a cavity in the bottle mold assembly (311) and isolated from the outside before ejection and material taking.

4. The dual equipment on-line integrated injection stretch blow molding machine of claim 1, wherein: the injection platform (11) injects the plastic fluid into a cavity of the bottle mold assembly (311) by applying pressure to the molten plastic fluid;

the constant temperature device (51) is arranged on an injection cylinder (52) of the injection platform (11) and is used for keeping plastic fluid at constant temperature;

the pressurizing delivery pipe (53) is arranged on the injection cylinder (52) and is respectively connected with the constant temperature device (51) and the injection port;

the pressure push rod (54) is arranged in the pressurizing delivery pipe (53) and is used for pushing the plastic fluid into the cavity;

the pressure sensor (55) is positioned on the pressure push rod (54) and used for feeding back the pressure;

a temperature sensor (56) located on the thermostatic device (51) for feeding back the real-time temperature of the molten fluid;

the control host (2) is connected with the constant temperature device (51), the pressurization conveying pipe (53), the pressure push rod (54), the pressure sensor (55) and the temperature sensor (56) respectively, the respective working state is adjusted, when the injection platform (11) injects materials into the cavity at each time, the material control temperature conveyed by the receiving hopper enables the raw materials to form a fluid state, the pressure push rod (54) keeps the pressure to continuously extrude and keep the fluid, the filtered air is discharged, and then the fluid is pushed to flow into the cavity through the closed channel.

5. The dual-equipment on-line integrated injection stretch blow molding machine of claim 4, wherein: the control host (2) is internally provided with a cavity volume value, an initial pressure selection database corresponding to the cavity volume value, an initial push fluid speed selection database, a first temperature threshold value and a second temperature threshold value, the temperature sensor (56) feeds back the fluid temperature monitored in real time to the control host (2), the control host (2) compares the real-time fluid temperature data with the first temperature threshold value and the second temperature threshold value, and an initial pressure value and an initial speed value are selected from the initial pressure selection database and the initial push fluid speed selection database according to the comparison result.

6. The dual-equipment on-line integrated injection stretch blow molding machine of claim 5, wherein: the control host (2) is provided with cross section data and a standard fluid volume data range of a pressurization delivery pipe (53), when a pressure sensor (55) detects that the pressure of a pressure push rod (54) reaches an initial pressure value, the pressure push rod (54) keeps the initial pressure value and the initial speed value, a volume value of pushing fluid is calculated according to the cross section data, pushing duration data of the pressure push rod (54) is calculated according to the comparison of standard fluid volumes, and the actual volume of the fluid is controlled to be within the standard fluid volume data range by adjusting the pushing duration data.

7. The dual-equipment on-line integrated injection stretch blow molding machine of claim 3, wherein: the internal luminousness detection subassembly that is provided with of material stripping module (44), dispose luminousness qualification data scope in control host (2), the product after the luminousness detection subassembly to the drawing of patterns is carried out the printing opacity and is detected the current luminousness data of back and give control host (2), control host (2) are in luminousness qualification data scope through the current luminousness data of data contrast, current luminousness data is not in luminousness qualification data scope, then adjust standard fluid volume data scope, through the circulation allotment, it satisfies luminousness qualification data scope to reach luminousness data.

8. The dual-equipment on-line integrated injection stretch blow molding machine of claim 2, wherein: the injection platform (11) is provided with a moving driving mechanism (57), a distance detector (58) is arranged on the injection platform (11),

the moving direction of the moving driving mechanism (57) is given by a direction command by the control host (2);

the distance detector (58) is used for detecting real-time distance data between the end part of the injection molding table and the injection hole position of the injection molding module (41) and transmitting the distance data to the control host (2), when the control host (2) is started, the distance data are taken and serve as initial distance values, the control host (2) configures a plurality of stroke sections according to the initial distance values, and the stroke sections comprise an acceleration section, a first deceleration section and a second deceleration section;

when the movement driving mechanism (57) moves forward or backward, the movement driving mechanism (57) is configured to accelerate when the relative distance value is in the acceleration range, the movement driving mechanism (57) is configured to decelerate when the relative distance value is in the first deceleration range, the movement driving mechanism (57) is configured to decelerate to zero when the relative distance value is in the second deceleration range, when the movement driving mechanism (57) moves forward, the relative distance value = | the real-time distance value-the initial distance value |, and when the movement driving mechanism (57) moves backward, the relative distance value = the real-time distance value.

9. The dual equipment on-line integrated injection stretch blow molding machine of claim 8, wherein: initial distance value of L₀The acceleration section is L₁The first deceleration section is L₂Second reduction stage L₃Then L is₀=L₁+L₂+L₃，L₁＞L₂＞L₃。