CN115284580B - Injection blow molding intelligent manufacturing system based on remote monitoring - Google Patents

Injection blow molding intelligent manufacturing system based on remote monitoring Download PDF

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CN115284580B
CN115284580B CN202211220412.7A CN202211220412A CN115284580B CN 115284580 B CN115284580 B CN 115284580B CN 202211220412 A CN202211220412 A CN 202211220412A CN 115284580 B CN115284580 B CN 115284580B
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blow molding
module
data processing
contour image
processing module
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CN115284580A (en
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何志斌
倪爱明
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Zhangjiagang Lianxin Plastics Machinery Co ltd
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Zhangjiagang Lianxin Plastics Machinery Co ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
    • B29C49/06—Injection blow-moulding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/78—Measuring, controlling or regulating
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7158—Bottles

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  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
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  • Signal Processing (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)

Abstract

The invention relates to the field of material forming, in particular to an injection blow molding intelligent manufacturing system based on remote monitoring.

Description

Injection blow molding intelligent manufacturing system based on remote monitoring
Technical Field
The invention relates to the field of material forming, in particular to an injection blow molding intelligent manufacturing system based on remote monitoring.
Background
Blow molding is a method of blowing a hot parison closed in a mold into a hollow article by gas pressure, and is widely used for manufacturing various packaging containers and tubular films, and various automatic intelligent manufacturing apparatuses for blow molding have come into use with the development of automation technology.
Chinese patent publication no: CN106346755A, which discloses the following, the invention includes injection molding pipe blank station, pipe blank blowing station, filling station, capping and sealing station and product transferring station, the above five stations are distributed on the station disc, the center of the station disc is connected to the blow-filling hollow mandrel through the rotary air-distributing and water-distributing component, the clamp is set corresponding to the blow-filling hollow mandrel, the clamp is connected with the lifting driving piece; the invention also relates to a process for injection, blow, filling and sealing of plastic bottle packages, which comprises the following steps: 1) Forming a pipe blank on a blowing and filling hollow mandrel; 2) Transferring the pipe blank to a pipe blank blowing station by using a blowing and filling hollow mandrel, and then performing blow molding; 3) The plastic bottle is transferred to a filling station, and materials are filled into the plastic bottle by blowing and filling the hollow core; 4) Transferring to the next station after filling, and covering and sealing; 5) The plastic bottle packaging machine is transferred to a product transfer station for transfer after being covered and sealed, so that the continuous production of plastic bottle packaging is realized, the occupied space is saved, and the production efficiency is improved.
However, the prior art still has the following problems that the prior art does not consider the influence of the shape characteristics of the to-be-processed product on the injection blowing process, in practical situations, a part of to-be-processed product with a special shape exists, the outline of the to-be-processed product has parts with large extension, and the parts are easy to have the situations of incomplete blow molding and uneven blow molding in the injection blowing process; moreover, the prior art lacks a device for automatically adjusting the operating parameters of the injection and blowing process according to the shape characteristics of the sample.
Disclosure of Invention
In order to solve the above problems, the present invention provides an injection blow molding intelligent manufacturing system based on remote monitoring, which includes:
an injection molding module for making a parison;
the blow molding module comprises a mold and a blowing unit arranged on one side of the mold, the blowing unit blows air to a parison placed in the mold, the blowing unit comprises a blowing mandrel, and the blowing mandrel can move in the mold;
the detection module comprises a photographic device for shooting a sample to be manufactured and a finished product and transmitting shot image information to the data processing module, and the data processing module is respectively connected with the injection molding module, the blow molding module and the detection module and controls the operation parameter adjustment of the injection molding module and the blow molding module;
and the data processing module extracts a contour image according to the image information of the to-be-manufactured sample sent by the detection module, calculates a to-be-manufactured sample characteristic parameter E corresponding to the contour image, determines the operation parameters of the blow molding module and the injection molding module according to the to-be-manufactured sample characteristic parameter E, screens the contour image, determines the moving position of the blow core rod in the mold according to the screening result, and judges whether the operation parameters of the blow molding module need to be corrected according to the contour image of the finished product.
Furthermore, the detection module is provided with a sample detection mode, after the sample detection mode is started and a sample to be prepared is placed in the detection module, the photographing device of the detection module photographs the sample to be prepared, obtains image information of the sample to be prepared, and transmits the image information of the sample to be prepared to the data processing module.
Further, the data processing module receives the image information of the sample to be prepared sent by the detection module, and calculates the characteristic parameter E of the sample to be prepared corresponding to the contour image according to the formula (1),
Figure 100002_DEST_PATH_IMAGE001
(1)
when the formula (1) is used for calculation, a coordinate system is established by taking the center of the contour image as a coordinate origin, in the formula (1), S represents the total area of the contour image, S0 represents a preset total area parameter, xm represents the difference value between the maximum value of the X-axis coordinate and the minimum value of the X-axis coordinate in the contour image, xe represents an X-axis coordinate average value parameter, xe is calculated according to the formula (2),
Figure 839779DEST_PATH_IMAGE002
(2)
in the formula (2), Y1 represents the minimum value of the Y-axis coordinate in the contour image, Y2 represents the maximum value of the Y-axis coordinate in the contour image,
Figure 100002_DEST_PATH_IMAGE003
p represents the sum of the X-axis coordinate values of each point in the X-axis positive profile image, and Xn represents the sum of the X-axis coordinate values of each point in the X-axis negative profile image.
Furthermore, the data processing module determines the operation parameters of the blow molding module according to the characteristic parameters E of the sample to be prepared, wherein,
when the E is larger than or equal to E2, the data processing module determines that the temperature of the injection module when the parison is manufactured is T10+ TE1 xE/E2, determines that the inflation air pressure of the blow molding module when the blow molding module blows air to the parison is F0+ FE xE/E2, and determines that the mold heating temperature of the blow molding module is T20+ TE2 xE/E2;
when E1 is more than or equal to E and less than E2, the data processing module determines that the temperature of the injection molding module when the parison is manufactured is T10, determines that the inflation air pressure of the blow molding module when the parison is blown by the blow molding module is F0, and determines that the mold heating temperature of the blow molding module is T20;
when the E is less than E1, the data processing module determines that the temperature of the injection molding module when the parison is manufactured is T10-TE1 xE/E2, determines that the blowing air pressure of the blow molding module when the parison is blown is F0-FE xE/E2, and determines that the mold heating temperature of the blow molding module is T20-TE2 xE/E2;
the method comprises the steps that E1 represents a first sample characteristic comparison parameter, E2 represents a second sample characteristic comparison parameter, T10 represents a preset parison manufacturing temperature parameter, T20 represents a preset mold heating temperature parameter, F0 represents a preset inflation air pressure parameter, TE1 represents a preset parison temperature adjustment parameter, TE2 represents a preset mold temperature adjustment parameter, FE represents a preset inflation air pressure adjustment parameter, and E1, E2, T10, T20, F0, TE1, TE2 and FE are all prestored in a data processing module.
Further, the data processing module screens the contour image, establishes a plurality of straight lines which are parallel to the X axis and have equal intervals, divides the contour image into a plurality of parts, calculates curve offset parameters Ke corresponding to the contour image of each part according to a formula (3),
Figure 367713DEST_PATH_IMAGE004
(3)
in the formula (3), D represents the distance between straight lines, xp represents the sum of X-axis coordinate values of all points in the partial contour image with the positive X-axis, and xn represents the sum of X-axis coordinate values of all points in the partial contour image with the negative X-axis;
the data processing module compares the curve offset degree parameter Ke corresponding to each part of the contour image with a preset curve offset degree comparison parameter Ke0,
and when Ke is larger than or equal to Ke0, screening out the partial contour image corresponding to the offset contrast parameter Ke by the data processing module, and determining the corresponding coordinate of the screened partial contour image in the coordinate system.
Furthermore, the blowing unit of the blowing module comprises a movable blowing mandrel, and when the parison is blown, the data processing module controls the blowing mandrel of the blowing unit to move at a preset moving speed.
Further, the data processing module determines the moving position of the blowing mandrel according to the screening result of the profile image, controls the blowing mandrel to move according to the corresponding position of the longitudinal center coordinate Ye in the mold, stops when the blowing port moves to the position until blowing of the parison is completed, wherein the data processing module calculates the longitudinal center coordinate Ye of the partial profile image according to a formula (4) according to the corresponding coordinate of the screened partial profile image in the coordinate system,
Ye=ye2-ye1 (4)
in the formula (4), ye1 represents the minimum value of the Y-axis coordinate in the partial contour image, and ye2 represents the maximum value of the Y-axis coordinate in the partial contour image.
Further, the photographic device transmits the shot finished product image information to a data processing module, the data processing module extracts a finished product outline image according to the shot image information, compares the finished product outline image with the outline image of the sample to be manufactured, calculates the offset C according to a formula (5), judges whether the operation parameters of the blow molding module need to be adjusted or not,
Figure 100002_DEST_PATH_IMAGE005
(5)
in the formula (5), xp2 represents the sum of the coordinate values of the X axes of all points in the profile image of the sample to be prepared in the positive X-axis direction, xp1 represents the sum of the coordinate values of the X axes of all points in the finished product profile image in the positive X-axis direction, xn1 represents the sum of the coordinate values of the X axes of all points in the profile image of the sample to be prepared in the negative X-axis direction, and Xn2 represents the sum of the coordinate values of the X axes of all points in the finished product profile image in the negative X-axis direction;
when C is larger than or equal to C01, the data processing module judges that the operation parameters of the blow molding module need to be adjusted;
wherein C01 represents a preset qualification determination parameter.
Furthermore, a finished product detection inflation air pressure regulating parameter F01 and a finished product detection mold temperature regulating parameter T01 are preset in the data processing module, when the data processing module judges that the operation parameters of the blow molding module need to be adjusted,
increasing the determined heating temperature of the die by T01 xC/C01;
the determined inflation pressure is increased by F01 XC/C01.
Furthermore, a time interval t0 is preset in the detection module, a photographing device of the detection module photographs the produced finished products every t0 time, and only one finished product is photographed in a single photographing process.
Furthermore, the data processing module is also connected with an external display screen to display the operating parameters of the injection molding module and the blow molding module in real time.
Compared with the prior art, the invention has the advantages that the injection molding module is arranged to form a blank, the blow molding module is used to blow the blank placed in the mold to form a finished product, the image information of a sample to be manufactured is shot through the photographic device, the data processing module is used to extract the outline image in the image information and calculate the characteristic parameters of the sample to be manufactured, the operation parameters in the blow molding process are adjusted according to the characteristic parameters of the sample to be manufactured, the outline image is screened, the part of the outline image with larger extension is screened out, the moving position of the blowing core rod in the mold is set according to the screening result, the whole blow molding effect is ensured through automatic operation and adjustment of equipment, the phenomenon that the blow molding of the part with larger extension of the product is not in place or uneven is reduced, and the yield is improved.
Particularly, the image of the sample to be manufactured is shot through the detection module, the contour image is extracted through the data processing module, the characteristic parameter E of the sample to be manufactured is calculated according to the contour image, and the characteristic parameter E of the sample to be manufactured has representation on the total area of the contour and the outward extension degree of the contour, in the practical situation, the blowing air pressure, the mold temperature and the temperature during manufacturing of the blank have influence on the molding of the blow-molded piece, and the influence degrees on the blow-molded pieces with different sizes and shapes are different, so that the operation parameters in the blow molding process are adjusted according to the characteristic parameter E of the sample to be manufactured, the influence of the shape and the size of the blow-molded piece on the molding is reduced, the partial large characteristic parameter E of the sample to be manufactured is increased, the mold temperature and the blowing air pressure are increased, and the phenomenon that the blow molding of the part with large extension degree of the product is not in place or not uniform is reduced.
Particularly, the invention divides the profile image, calculates the curve deviation degree parameter Ke for each divided profile image, and can represent the outward extension degree of the corresponding part profile image compared with the whole profile for the curve deviation degree parameter Ke, in the actual situation, the blow molding reject ratio is lower for the blow molding parts with the conventional shape and the conventional size, and for the blow molding parts with the special shape, for example, the blow molding parts have the part with the larger outward extension degree, and the phenomenon that the blow molding is not in place or uneven is easy to occur in the blow molding process for the part.
Particularly, the outward extending parts are screened, the moving position of the blowing mandrel in the mold is determined according to the screening result, so that the distance between the blowing mandrel and the corresponding outward extending part can be closer, in an actual situation, for a part of the blowing part with a special shape and an outward extending position, a blowing port of the blowing mandrel is close to the extending position, the blowing effect on the extending position can be effectively improved, the data processing module calculates the better moving position of the blowing mandrel through the screening result, the whole blowing effect can be improved by controlling the blowing mandrel to extend to the corresponding position, the phenomenon that the blowing of the part with larger extension of a product to be manufactured is not in place or uneven is reduced, and the yield is improved.
Particularly, the photographic device of the detection module shoots finished products, the data processing module compares the outline images of the finished products and the outline images of the samples to be manufactured to calculate the deviation degree, and the operation parameters of the blow molding module are adjusted according to the deviation degree, so that the whole blow molding effect is ensured, and the reject ratio is reduced.
Drawings
FIG. 1 is a schematic structural diagram of an injection blow molding intelligent manufacturing system based on remote monitoring according to an embodiment of the present invention;
FIG. 2 is a schematic view of a blow module configuration according to an embodiment of the invention;
FIG. 3 is a schematic diagram of a profile image according to an embodiment of the invention;
in the figure, 1: mold, 2: air blowing port, 3: blowing core rod, 4: and a blowing unit.
Detailed Description
In order that the objects and advantages of the invention will be more clearly understood, the invention is further described below with reference to examples; it should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
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.
Fig. 1 is a schematic structural diagram of an injection-blow molding intelligent manufacturing system based on remote monitoring according to an embodiment of the present invention, and the injection-blow molding intelligent manufacturing system based on remote monitoring according to the present invention includes:
an injection molding module for making a parison;
the blow molding module comprises a mold 1 and a blowing unit arranged on one side of the mold 1, wherein the blowing unit 4 blows air to a parison placed in the mold 1, the blowing unit 4 comprises a blowing mandrel 3, and the blowing mandrel 3 can move in the mold;
the detection module comprises a photographic device for shooting the sample and the finished product to be manufactured and transmitting the shot image information to the data processing module;
the data processing module is connected with the injection molding module, the blow molding module and the detection module so as to control the operating parameters of the injection molding module and the blow molding module and receive the data sent by the detection module;
and the data processing module extracts a contour image according to the image information of the to-be-manufactured sample sent by the detection module, calculates a to-be-manufactured sample characteristic parameter E corresponding to the contour image, determines the operation parameters of the blow molding module and the injection molding module according to the to-be-manufactured sample characteristic parameter E, screens the contour image, determines the moving position of the blow core rod 3 of the blow unit 4 in the mold 1 according to the screening result, and judges whether the operation parameters of the blow molding module need to be corrected or not according to the contour image of the finished product.
Specifically, the present invention is not limited to the specific structure of the injection module, and it should be understood by those skilled in the art that the present invention only needs to complete the molding of the parison and control the temperature during the molding of the parison.
Specifically, the specific form of the data processing module of the present invention is not limited, and the data processing module may be an external computer, and only needs to complete data processing and complete data exchange with the injection molding module, the blow molding module and the detection module.
Specifically, as shown in fig. 2, the blow molding module of the present invention includes a blow unit 4 and a mold 1, where the blow unit 4 includes a blow mandrel 3, the upper portion of the blow mandrel 3 is provided with a blow port 2, and the blow mandrel 3 is also a mature prior art in the prior art, and the present invention does not limit other structures of the blow mandrel 3, and only needs to complete blowing and adjust the inflation pressure, and for the moving manner of the blow mandrel 3, a telescopic mandrel may be adopted, and a telescopic mechanism may also be arranged at the bottom of the mandrel to control the movement of the mandrel in the mold 1, which are not described herein in detail in the prior art.
Specifically, the detection module is provided with a sample detection mode, after the sample detection mode is started and a sample to be prepared is placed in the detection module, the photographing device of the detection module photographs the sample to be prepared, obtains image information of the sample to be prepared, and transmits the image information of the sample to be prepared to the data processing module.
Specifically, referring to fig. 3, the data processing module receives image information of a sample to be prepared sent by the detection module, extracts a contour image of the sample to be prepared in the image information of the sample to be prepared, calculates a characteristic parameter E of the sample to be prepared corresponding to the contour image according to a formula (1),
Figure 767601DEST_PATH_IMAGE001
(1)
when the formula (1) is calculated, a coordinate system is established by taking the center of the contour image as a coordinate origin, in the formula (1), S represents the total area of the contour image, S0 represents a preset total area parameter, 20cm < S0 < 80cm, xm represents a difference value between the maximum value of X-axis coordinates and the minimum value of X-axis coordinates in the contour image, xe represents an X-axis coordinate average value parameter, xe is calculated according to the formula (2),
Figure 7084DEST_PATH_IMAGE002
(2)
in the formula (2), Y1 represents the minimum value of the Y-axis coordinate in the contour image, Y2 represents the maximum value of the Y-axis coordinate in the contour image,
Figure 416199DEST_PATH_IMAGE003
p represents the sum of the X-axis coordinate values of each point in the X-axis positive profile image, and Xn represents the sum of the X-axis coordinate values of each point in the X-axis negative profile image.
Specifically, the image of a sample to be manufactured is shot through the detection module, the outline image is extracted through the data processing module, the characteristic parameter E of the sample to be manufactured is calculated according to the outline image, the characteristic parameter E of the sample to be manufactured has representation on the total area of the outline and the outward extension degree of the outline, in the practical situation, the blowing air pressure, the mold temperature and the temperature during manufacturing of a blank have influence on the molding of a blow-molded piece, and the influence degrees on the blow-molded pieces with different sizes and shapes are different, so that the operation parameters in the blow molding process are adjusted according to the characteristic parameter E of the sample to be manufactured, the influence of the shape and the size of the blow-molded piece on the molding is reduced, the mold temperature and the blowing air pressure are increased when the characteristic parameter E of the sample to be manufactured is larger, and the phenomenon that the blow molding of the part with larger extension degree of the product is not in place or not uniform is reduced.
Specifically, the data processing module determines the operation parameters of the blow molding module according to the characteristic parameters E of the sample to be prepared, wherein,
when the E is larger than or equal to the E2, the data processing module determines that the temperature of the injection molding module when the parison is manufactured is T10+ TE1 xE/E2, determines that the blowing air pressure of the blow molding module when the parison is blown is F0+ FE xE/E2, and determines that the mold heating temperature of the blow molding module is T20+ TE2 xE/E2;
when E1 is larger than or equal to E and smaller than E2, the data processing module determines that the temperature of the injection molding module when the parison is manufactured is T10, determines that the blowing air pressure of the blow molding module when the blow molding module blows air to the parison is F0, and determines that the mold heating temperature of the blow molding module is T20;
when the E is less than E1, the data processing module determines that the temperature of the injection molding module when the parison is manufactured is T10-TE1 xE/E2, determines that the blowing air pressure of the blow molding module when the parison is blown is F0-FE xE/E2, and determines that the mold heating temperature of the blow molding module is T20-TE2 xE/E2;
wherein E1 represents a first sample characteristic comparison parameter, E2 represents a second sample characteristic comparison parameter, E2 is more than 0 and less than 2.5, T10 represents a preset parison manufacturing temperature parameter, T10 is more than 150 and less than 300 ℃, T20 represents a preset mold heating temperature parameter, T20 is more than 20 and less than 50 ℃, F0 represents a preset inflation air pressure parameter, F0 is more than 0.8Mpa and less than 1.0mpa, TE1 represents a preset parison temperature adjustment parameter, TE1 is more than 30 ℃ and less than 60 ℃, TE2 represents a preset mold temperature adjustment parameter, TE2 is more than 10 ℃ and less than 25 ℃, FE represents a preset inflation air pressure adjustment parameter, F0.1 Mpa and less than F0.3mpa, E1, E2, T10, T20, F0, TE1, TE2 and FE are all pre-stored in the data processing module.
Specifically, the data processing module screens the contour image, establishes a plurality of straight lines which are parallel to an X axis and have equal intervals, divides the contour image into a plurality of parts, calculates curve offset parameters Ke corresponding to the contour image of each part according to a formula (3),
Figure 674005DEST_PATH_IMAGE004
(3)
in the formula (3), D represents the distance between straight lines, xp represents the sum of X-axis coordinate values of all points in the partial contour image with the positive X-axis, and xn represents the sum of X-axis coordinate values of all points in the partial contour image with the negative X-axis;
the data processing module compares the curve offset degree parameter Ke corresponding to each part of the contour image with a preset curve offset degree comparison parameter Ke0, wherein Ke0 is more than 0,
and when Ke is larger than or equal to Ke0, screening out the partial contour image corresponding to the offset contrast parameter Ke by the data processing module, and determining the corresponding coordinates of the screened partial contour image in the coordinate system.
Specifically, the contour image is divided, the curve deviation degree parameter Ke is calculated for each divided part of the contour image, the outward extension degree of the corresponding part of the contour image compared with the whole contour can be represented for the curve deviation degree parameter Ke, in the actual situation, the blow molding reject ratio of the blow molding part with the conventional shape and the conventional size is lower, for the blow molding part with the special shape, for example, the part with the larger outward extension degree exists, and the phenomenon that the blow molding is not in place or uneven is easy to occur in the blow molding process for the part.
Specifically, the blowing unit 4 of the blowing module comprises a movable blowing mandrel 3, and the data processing module controls the blowing mandrel 3 of the blowing unit 4 to move at a preset moving speed when blowing the parison.
Specifically, the data processing module determines the moving position of the blowing mandrel 3 according to the screening result of the outline image, controls the blowing mandrel 3 to move according to the corresponding position of the longitudinal center coordinate Ye in the mold, stops when the blowing port 2 moves to the position until blowing of the parison is completed, wherein,
the data processing module calculates the longitudinal center coordinate Ye of the partial outline image according to the formula (4) according to the corresponding coordinate of the screened partial outline image in the coordinate system,
Ye=ye2-ye1 (4)
in the formula (4), ye1 represents the minimum value of the Y-axis coordinate in the partial contour image, and ye2 represents the maximum value of the Y-axis coordinate in the partial contour image.
Specifically, according to the invention, the outward extending parts are screened, and the moving position of the blowing mandrel 3 in the mold 1 is determined according to the screening result, so that the distance between the blowing mandrel 3 and the corresponding outward extending part is closer, in an actual situation, for a part of a blowing part with a special shape and an outward extending position, the blowing port 2 of the blowing mandrel 3 is close to the extending position, the blowing effect on the extending position can be effectively improved, through the screening result, the data processing module calculates the better moving position of the blowing mandrel 3, controls the blowing mandrel 3 to extend to the corresponding position, the overall blowing effect can be improved, the phenomenon that the blowing of the part with a larger extension degree of a product to be processed is not in place or is not uniform is reduced, and the yield is improved.
Specifically, the photographic device of the detection module shoots finished products, the shot image information of the finished products is transmitted to the data processing module, the data processing module extracts the contour image of the finished products according to the shot image information, compares the contour image of the finished products with the contour image of the sample to be manufactured, calculates the offset C according to the formula (5), and judges whether the operation parameters of the blow molding module need to be adjusted or not,
Figure 290800DEST_PATH_IMAGE005
(5)
in the formula (5), xp2 represents the sum of the coordinate values of the X axes of all points in the profile image of the sample to be prepared in the positive X-axis direction, xp1 represents the sum of the coordinate values of the X axes of all points in the finished product profile image in the positive X-axis direction, xn1 represents the sum of the coordinate values of the X axes of all points in the profile image of the sample to be prepared in the negative X-axis direction, and Xn2 represents the sum of the coordinate values of the X axes of all points in the finished product profile image in the negative X-axis direction;
when C is larger than or equal to C01, the data processing module judges that the operation parameters of the blow molding module need to be adjusted;
wherein C01 represents a preset qualification judgment parameter, and C01 is more than 0.
Specifically, a finished product detection inflation air pressure regulating parameter F01 and a finished product detection mold temperature regulating parameter T01 are preset in the data processing module, T01 is larger than 10 ℃ and smaller than 25 ℃, FE represents a preset inflation air pressure regulating parameter, F01 is larger than 0.1MPa and smaller than 0.3MPa, when the data processing module judges that the operation parameters of the blow molding module need to be regulated,
increasing the determined heating temperature of the die by T01 xC/C01;
the determined inflation pressure was increased by F01 XC/C01.
Specifically, a time interval t0 is preset in the detection module, a photographing device of the detection module photographs the produced finished products every t0 time, and only one finished product is photographed in a single photographing process.
Particularly, the data processing module is further connected with an external display screen to display the operating parameters of the injection molding module and the blow molding module in real time.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.

Claims (6)

1. An injection blow molding intelligent manufacturing system based on remote monitoring is characterized by comprising:
an injection molding module for making a parison;
the blow molding module comprises a mold and a blowing unit arranged on one side of the mold, the blowing unit blows air to a parison placed in the mold, the blowing unit comprises a blowing mandrel, and the blowing mandrel can move in the mold;
the detection module comprises a photographic device for shooting a sample to be manufactured and a finished product and transmitting shot image information to the data processing module, and the data processing module is respectively connected with the injection molding module, the blow molding module and the detection module and controls the operation parameter adjustment of the injection molding module and the blow molding module;
the data processing module extracts a contour image according to image information of a to-be-manufactured sample sent by the detection module, calculates a to-be-manufactured sample characteristic parameter E corresponding to the contour image, determines operation parameters of the blow molding module and the injection molding module according to the to-be-manufactured sample characteristic parameter E, screens the contour image, determines the moving position of the blow core rod in the mold according to a screening result, and judges whether the operation parameters of the blow molding module need to be corrected according to the contour image of a finished product;
the data processing module receives the image information of the sample to be prepared sent by the detection module, calculates the characteristic parameter E of the sample to be prepared corresponding to the contour image according to a formula (1),
Figure DEST_PATH_IMAGE001
(1)
when the formula (1) is used for calculation, a coordinate system is established by taking the center of the contour image as a coordinate origin, in the formula (1), S represents the total area of the contour image, S0 represents a preset total area parameter, xm represents the difference value between the maximum value of the X-axis coordinate and the minimum value of the X-axis coordinate in the contour image, xe represents an X-axis coordinate average value parameter, xe is calculated according to the formula (2),
Figure 57507DEST_PATH_IMAGE002
(2)
in formula (2), Y1 represents the minimum value of the Y-axis coordinate in the contour image, Y2 represents the maximum value of the Y-axis coordinate in the contour image,
Figure DEST_PATH_IMAGE003
p represents the sum of X-axis coordinate values of each point in the X-axis positive profile image, and Xn represents the X-axis coordinate values of each point in the X-axis negative profile imageThe sum of the values;
the data processing module screens the contour image, establishes a plurality of straight lines which are parallel to an X axis and have equal intervals, divides the contour image into a plurality of parts, calculates curve offset parameters Ke corresponding to the contour image of each part according to a formula (3),
Figure 643821DEST_PATH_IMAGE004
(3)
in the formula (3), D represents the distance between straight lines, xp represents the sum of X-axis coordinate values of all points in the partial contour image with the positive X-axis, and xn represents the sum of X-axis coordinate values of all points in the partial contour image with the negative X-axis;
the data processing module compares the curve offset degree parameter Ke corresponding to each part of the contour image with a preset curve offset degree comparison parameter Ke0,
when Ke is larger than or equal to Ke0, screening out the partial contour image corresponding to the offset contrast parameter Ke by the data processing module, and determining the corresponding coordinate of the screened partial contour image in a coordinate system;
the data processing module controls the blowing core rod of the blowing unit to move at a preset moving speed;
the data processing module determines the moving position of the blowing mandrel according to the screening result of the contour image, controls the blowing mandrel to move according to the corresponding position of the longitudinal center coordinate Ye in the mold, stops when the blowing port moves to the position until blowing of the parison is completed, wherein the data processing module calculates the longitudinal center coordinate Ye of a part of the contour image according to the corresponding coordinate of the screened part of the contour image in a coordinate system and according to a formula (4),
Ye=ye2-ye1 (4)
in the formula (4), ye1 represents the minimum value of the Y-axis coordinate in the partial contour image, and ye2 represents the maximum value of the Y-axis coordinate in the partial contour image.
2. The injection blow molding intelligent manufacturing system based on remote monitoring of claim 1, wherein the data processing module determines the operation parameters of the blow molding module according to the characteristic parameter E of the sample to be manufactured, wherein,
when the E is larger than or equal to E2, the data processing module determines that the temperature of the injection module when the parison is manufactured is T10+ TE1 xE/E2, determines that the inflation air pressure of the blow molding module when the blow molding module blows air to the parison is F0+ FE xE/E2, and determines that the mold heating temperature of the blow molding module is T20+ TE2 xE/E2;
when E1 is more than or equal to E and less than E2, the data processing module determines that the temperature of the injection molding module when the parison is manufactured is T10, determines that the inflation air pressure of the blow molding module when the parison is blown by the blow molding module is F0, and determines that the mold heating temperature of the blow molding module is T20;
when the E is less than E1, the data processing module determines that the temperature of the injection molding module when the parison is manufactured is T10-TE1 xE/E2, determines that the blowing air pressure of the blow molding module when the parison is blown is F0-FE xE/E2, and determines that the mold heating temperature of the blow molding module is T20-TE2 xE/E2;
wherein E1 represents a first sample characteristic comparison parameter, E2 represents a second sample characteristic comparison parameter, T10 represents a preset parison manufacturing temperature parameter, T20 represents a preset mold heating temperature parameter, F0 represents a preset inflation air pressure parameter, TE1 represents a preset parison temperature adjustment parameter, TE2 represents a preset mold temperature adjustment parameter, FE represents a preset inflation air pressure adjustment parameter, and E1, E2, T10, T20, F0, TE1, TE2 and FE are all pre-stored in the data processing module.
3. The intelligent injection blow molding manufacturing system based on remote monitoring as claimed in claim 1, wherein the camera device transmits the shot image information of the finished product to the data processing module, the data processing module extracts the contour image of the finished product according to the shot image information, compares the contour image of the finished product with the contour image of the sample to be manufactured, calculates the offset C according to the formula (5), and determines whether the operation parameters of the blow molding module need to be adjusted,
Figure DEST_PATH_IMAGE005
(5)
in the formula (5), xp2 represents the sum of the coordinate values of the X axes of all points in the profile image of the sample to be prepared in the positive X-axis direction, xp1 represents the sum of the coordinate values of the X axes of all points in the finished product profile image in the positive X-axis direction, xn1 represents the sum of the coordinate values of the X axes of all points in the profile image of the sample to be prepared in the negative X-axis direction, and Xn2 represents the sum of the coordinate values of the X axes of all points in the finished product profile image in the negative X-axis direction;
when C is more than or equal to C01, the data processing module judges that the operation parameters of the blow molding module need to be adjusted;
wherein C01 represents a preset qualification determination parameter.
4. The intelligent injection-blow molding manufacturing system based on remote monitoring as claimed in claim 3, wherein a finished product detection inflation air pressure regulating parameter F01 and a finished product detection mold temperature regulating parameter T01 are preset in the data processing module, when the data processing module determines that the operation parameters of the blow molding module need to be adjusted,
increasing the determined heating temperature of the die by T01 xC/C01;
the determined inflation pressure was increased by F01 XC/C01.
5. The injection blow molding intelligent manufacturing system based on remote monitoring as claimed in claim 4, wherein a time interval t0 is preset in the detection module, the camera device of the detection module shoots produced finished products at intervals of t0, and only one finished product is shot in a single shooting process.
6. The injection-blow molding intelligent manufacturing system based on remote monitoring as claimed in claim 5, wherein the data processing module is further connected with an external display screen to display the operating parameters of the injection molding module and the blow molding module in real time.
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CN118047342A (en) * 2024-04-16 2024-05-17 江苏新美源机械有限公司 Blowing, filling and rotating system for carbonated beverage

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