CN112810104A - Extrusion production line capable of automatically adjusting section size and extrusion control method - Google Patents
Extrusion production line capable of automatically adjusting section size and extrusion control method Download PDFInfo
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- CN112810104A CN112810104A CN202110168911.5A CN202110168911A CN112810104A CN 112810104 A CN112810104 A CN 112810104A CN 202110168911 A CN202110168911 A CN 202110168911A CN 112810104 A CN112810104 A CN 112810104A
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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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
- B29C48/302—Extrusion nozzles or dies being adjustable, i.e. having adjustable exit sections
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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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/025—General arrangement or layout of plant
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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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
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- 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
- B29L2030/00—Pneumatic or solid tyres or parts thereof
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Abstract
The invention provides an extrusion production line capable of automatically adjusting section size and an extrusion control method, and belongs to the technical field of machinery and automation. The extrusion production line comprises an extrusion mouth shape adjusting assembly, a mouth shape speed measuring roller, a receiving device, a continuous scale weighing and conveying device, a continuous scale weighing device, a section scanner and a PLC control system; the extrusion die adjusting assembly comprises a first die plate, a second die plate, a shifting sheet and a micro telescopic power element. The control method is to monitor the weight and the section size of the rubber product on line in real time and compare the weight and the section size with a standard value, and if deviation occurs, the section size can be automatically adjusted by adjusting the conveying speed and the size of an extrusion mouth type channel. The automatic packaging machine can improve the yield of products, reduce waste products and further improve the grade of the products, has high automation degree, and can improve the production efficiency and reduce the production cost.
Description
Technical Field
The invention relates to the technical field of machinery and automation, in particular to an extrusion production line capable of automatically adjusting section size and an extrusion control method.
Background
In the prior art, the main rubber components (such as treads, sidewalls, apexes, cushion rubbers, etc.) in tire products are generally produced by mainly adopting an extrusion process, so that the extrusion process of the rubber components is an important process link in automobile tire production enterprises. The quality and accuracy of the extruded product directly affects the final quality and accuracy of the tire product, as well as the direct and process costs of tire production. The accuracy of the section size of the semi-finished product in the extrusion process plays a decisive role in the quality and the accuracy of the extruded product. The cross-sectional dimension of the extrusion die is one of the most important factors affecting the cross-sectional accuracy of the extruded product.
The adjustment of the section size of the extrusion die is a complex process which needs repeated repair and extrusion verification. In order to obtain an ideal mouth shape section size, a mouth shape debugging person tests the extrusion expansion rate of a product at a mouth shape in advance under the conditions of a certain extruder rotating speed and a linkage line access speed, namely under the condition of a reasonable speed matching parameter set, and compares the product section size required by the process, so that the section size of the extrusion mouth shape is manually repaired by depending on experience, after the mouth shape is repaired, a glue extrusion test is carried out, then the repair and retest are carried out, and after the product with the qualified section size is debugged, the repaired mouth shape plate parameters, the extruder rotating speed matched with the parameters and the linkage line access speed are recorded into an industrial personal computer in the form of formula parameters. At this moment, the debugging work of the mouth-shaped plate is finished, and the mouth-shaped plate can be put into production and use.
When the product with the specification needs to be produced, an operator directly selects and calls the formula with the specification in an industrial personal computer to produce. However, the production method cannot timely adjust errors caused by various factors which are difficult to avoid, namely, the anti-interference capability of the production method is poor, so that the dimensional accuracy of the extruded semi-finished product is poor. Because in the actual extrusion process, there are many factors that influence the accuracy of the extruded profile dimensions of the semifinished product of the extrusion process, such as: the forced feeding fluctuation caused by the processing error of the equipment, the fluctuation of the discharged rubber amount per rotation of the screw, the extrusion fluctuation caused by different production places and batches of raw materials, the quality fluctuation of the rubber compound in the same batch caused by the processing error of the previous rubber compound process, or unpredictable process errors caused by manual operation errors or other unexpected reasons, and the like, and the various forms of process errors or quality fluctuation can cause the section size of the semi-finished product in the extrusion process to exceed the fluctuation variation range allowed by the process requirements, thereby possibly causing unqualified products.
CN104369351B discloses an mechatronic device for extruding rubber products and an extrusion control method thereof. The extrusion machine head is provided with an extrusion mouth shape, one side of the receiving device is close to the extrusion mouth shape, and the continuous weighing device and the width measuring device are arranged on the other side of the receiving device; the outer side of the extrusion die is provided with a die speed measuring roller for measuring the extrusion speed, the output ends of the continuous weighing device and the width measuring device are connected with the input end of a PLC control system, and the output end of the PLC control system is connected with the extrusion machine head and the receiving device; the invention can eliminate the fluctuation caused by the inherent error of the equipment, the predictability error such as the rubber material performance change and the like and the fluctuation of the weight and the width of the rubber product caused by other unpredictable errors through the main control ring and the auxiliary control ring, and improves the disturbance resistance and the extrusion accuracy of the electromechanical integrated device and the extrusion method.
However, the application of the invention has limitation, and the invention is more suitable for products with smaller section size fluctuation range, and for the production of products with larger section size fluctuation range caused by various reasons, the high-quality qualified products cannot be produced by the production adjusting method.
Disclosure of Invention
The invention aims to: aiming at the existing problems, the extrusion production line and the extrusion control method capable of automatically adjusting the section size are provided, the weight and the section size of a rubber product can be monitored on line in real time and compared with a standard value, if deviation occurs, the section size can be automatically adjusted by adjusting the conveying speed and the size of an extrusion opening channel, so that the yield of the product is improved, waste products are reduced, the grade of the product can be improved, the automation degree is high, the production efficiency is improved, and the production cost is reduced.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
an extrusion production line capable of automatically adjusting section size is used for extruding rubber products and comprises an extrusion mouth shape adjusting assembly, a mouth shape speed measuring roller, a receiving device, a continuous scale weighing and conveying device, a continuous scale weighing device, a section scanner and a PLC control system;
the extrusion mouth shape adjusting assembly is arranged on the extruder head and comprises a first mouth shape plate, a second mouth shape plate, a shifting sheet and a micro telescopic power element; the first die plate and the second die plate are opposite in position and form a rubber extrusion channel, a plurality of micro telescopic power element mounting grooves and a shifting piece groove are formed in the second die plate, a micro telescopic power element is mounted in each micro telescopic power element mounting groove, the telescopic direction of each micro telescopic power element points to the rubber extrusion channel, the telescopic end of each micro telescopic power element is fixedly connected with a shifting piece, the shifting piece is arranged in the shifting piece groove in the second die plate in a sliding mode, the micro telescopic power element mounting grooves are communicated with the shifting piece grooves, the shifting piece grooves are communicated with the rubber extrusion channel, and the tail end, far away from the micro telescopic power element, of each shifting piece is just flush with the side wall of the rubber extrusion channel in an initial state;
in the output direction of the extrusion channel of the extrusion mouth shape adjusting component, a mouth shape speed measuring roller for measuring the extrusion speed of the rubber product, a receiving device for receiving the rubber product and a continuous scale weighing and conveying device for conveying the rubber product are sequentially arranged, and one side of the continuous scale weighing and conveying device is provided with a continuous scale weighing device for measuring the weight of the extruded rubber product and a section scanner for testing the section size of the rubber product;
the data output ends of the mouth-shaped speed measuring roller, the continuous weighing device and the section scanner are all connected with the input end of the PLC control system, and the output end of the PLC control system is in control connection with the micro telescopic power element and the receiving device.
In the invention, a cover plate groove is formed in the outer side plate surface of the second mouth-shaped plate and is communicated with the micro telescopic power element mounting groove and the shifting piece groove; a cover plate is arranged on the cover plate groove; when the apron was installed at the apron inslot, the face of apron just in time parallel and level with the outside face of second mouth of the staff board, the side of apron just in time parallel and level with the lateral wall that the passageway was extruded to rubber, plectrum and apron lateral wall, with the equal accurate cooperation of plectrum groove lateral wall and relative slip.
In the invention, the first mouth-shaped plate and the second mouth-shaped plate are detachably connected, and on the opposite surfaces of the first mouth-shaped plate and the second mouth-shaped plate, one surface is provided with a positioning pin, and the other surface is provided with a matched positioning hole.
In the invention, further, the micro telescopic power element is a micro servo electric cylinder or a micro hydraulic oil cylinder.
In the invention, the receiving device is any one of a contraction roller way, a conveying roller way or a conveying belt, or a series combination of any two or three.
The invention also provides an extrusion control method capable of automatically adjusting the section size, which utilizes the extrusion production line and comprises the following steps:
after the machine is started, the rubber product is extruded from an extrusion channel of the extrusion mouth shape adjusting assembly, and the mouth shape speed measuring roller tests the extrusion speed of the rubber product and sends the extrusion speed to the PLC control system;
after the rubber product is forcibly contracted at the receiving device, the rubber product reaches the continuous scale weighing device to be automatically and continuously weighed, the obtained actual weight value is sent to the PLC control system, the PLC control system carries out calculation and comparison, if the average value of the actual weight of the rubber product is larger or smaller than the standard weight value, the PLC control system sends a first control instruction to adjust the conveying linear speed of the receiving device, when the weight value is larger, the conveying linear speed of the receiving device is accelerated, and when the weight value is smaller, the conveying linear speed of the receiving device is slowed down;
rubber products reach section scanner department and carry out the section scanning, section scanner sends the actual section size value that obtains to PLC control system, calculate and compare through PLC control system, if the average value of rubber products's actual section size compares the standard section size value that sets for and has the deviation, then revise to the great position of deviation value, adjusting module sends the second control command and gives the miniature flexible power component of corresponding position in the mouth type adjusting part, let miniature flexible power component move, order to order about one or more plectrums of corresponding position and stretch out or retract, thereby extrude the passageway to the goods and finely tune, thereby can guarantee that goods section size has very high precision.
According to the method, specifically, the PLC control system comprises a switch module, a setting module, a receiving module, a calculating module, a comparing module and an adjusting module;
the switch module is used for controlling the on and off of the mechatronic device;
the setting module is used for setting the specification of the rubber product and the conveying speed of the receiving device, and the specification of the rubber product comprises a standard weight value and/or a standard section size value of the rubber product;
the receiving module is used for receiving the extrusion speed value measured by the mouth-shaped speed measuring roller, receiving the actual weight value of the rubber product sent by the continuous scale weighing device and/or the actual section size value of the rubber product sent by the section scanner, and sending the extrusion speed value, the actual weight value and/or the actual section size value to the calculating module;
the calculation module is used for calculating the average value of the actual weight values and/or the average value of the actual section size values;
the comparison module is used for comparing the average value of the standard weight value and the actual weight value and outputting the comparison result to the adjustment module; and/or the average value of the standard section size value and the actual section size value is compared, and the comparison result is output to the adjusting module;
the adjusting module is used for sending a first control instruction to adjust the conveying speed of the receiving device and/or sending a second control instruction to adjust the action of the remote micro telescopic power element according to the received comparison result.
Therefore, the more specific automatic control method for the section size comprises the following steps:
(1) setting parameters: the specification of the rubber product and the conveying linear speed of the receiving device are set through a setting module of the PLC control system; the specification of the rubber product comprises a standard weight value and a standard section size value of the rubber product;
(2) automatic preparation production of rubber products: after the machine is started, the rubber product is extruded from an extrusion channel of the extrusion mouth shape adjusting assembly, the extrusion speed of the rubber product is tested by the mouth shape speed measuring roller, and the extrusion speed is converted into the extrusion linear speed by the encoder and then is sent to the receiving module; after the rubber product is forcibly contracted at the receiving device, the rubber product reaches the continuous scale weighing device to be automatically and continuously weighed, the obtained actual weight value is sent to the receiving module, the actual weight value is calculated by the calculation module of the PLC control system and is compared by the comparison module, if the average value of the actual weight of the rubber product is larger or smaller than the set standard weight value, the adjustment module sends a first control instruction to adjust the conveying linear speed of the receiving device, when the weight value is larger, the conveying line speed of the receiving device is accelerated, and when the weight value is smaller, the conveying line speed of the receiving device is slowed down; rubber products reach section scanner department and carry out the section scanning, section scanner sends the actual section size value that obtains for receiving module, calculation and comparison module through PLC control system calculate, if the average value of rubber products's actual section size compares the standard section size value of settlement and has the deviation, then revise to the great position of deviation value, the adjustment module sends second control command and gives the miniature flexible power component of corresponding position in the mouth type adjusting part, let miniature flexible power component move, order to order about one or more plectrums of corresponding position and stretch out or retract, thereby extrude the passageway to the goods and finely tune, thereby can guarantee that goods section size has very high precision.
In the above steps, if the actual section size value of the rubber product has a deviation from the set standard section size value, when the average actual section size value of a certain part is larger than the standard section size value of the part, the adjusting module sends a second control instruction to the micro telescopic power element at the corresponding part in the mouth-shaped adjusting assembly, so that the micro telescopic power element extends to drive one or more poking sheets at the corresponding part to extend, and the extrusion channel of the product is finely adjusted; when the average value of the actual section size of a certain part is smaller than the standard section size value of the part, the adjusting module sends a second control instruction to the micro telescopic power element at the corresponding part in the mouth-shaped adjusting assembly, so that the micro telescopic power element contracts to drive one or more shifting pieces at the corresponding part to retract, and the product extrusion channel is finely adjusted.
In the present invention, it is preferable that a plurality of the paddles are provided according to the cross-sectional shape of the rubber product and the cross-sectional size to be controlled, so that each cross-sectional size parameter can be adjusted and controlled.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. according to the invention, one or more sets of shifting pieces are added in the extrusion die type adjusting assembly, so that under the condition that the size of the section of a product fluctuates due to various factors, a micro stroke can be generated through the micro telescopic power element, the shifting pieces arranged in the die plate extend or retract corresponding strokes, and the size of the extrusion channel of the product in the die plate is further controlled.
2. According to the rubber product extrusion device, the extrusion channel size is adjusted by arranging the extrusion mouth shape adjusting component, the weight and the section size of the rubber product can be monitored online in real time by the detection devices of the mouth shape speed measuring roller, the continuous scale weighing device and the section scanner, and compared with a standard value through intelligent calculation of the PLC control system, if weight and size deviation occurs, the conveying speed and the section size can be automatically adjusted by adjusting the conveying speed of the receiving device and adjusting the extrusion mouth shape channel size, so that the yield of the rubber product is improved, waste products are reduced, the grade of the product can be improved, the automation degree is high, the production efficiency is improved, and the production cost is reduced.
Drawings
FIG. 1 is a schematic view of an extrusion line with automatically adjustable cross-sectional dimensions according to the present invention;
FIG. 2 is a schematic diagram of the structure of an extrusion die adjustment assembly provided in the present invention.
Fig. 3 is a cross-sectional view at a-a of fig. 2.
Fig. 4 is an enlarged view at I in fig. 3.
Fig. 5 is a control schematic of the present invention.
Wherein, 1, extruding the mouth shape to regulate the assembly; 1-1, a first bite-plate; 1-2, a second mouth plate; 1-3, a cover plate; 1-4, 1# plectrum; 1-5 and 2# plectrum; 1-6, a micro telescopic power element; 1-7, 1# screw; 1-8, 2# screw; 1-9, positioning pins; 1-10 extrusion channels; 2. a mouth-shaped speed measuring roller; 3. a rubber article; 4. a receiving device; 5. a continuous scale weighing and conveying device; 6. a continuous scale weighing device; 7. a section scanner.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The drawings are only for purposes of illustration and are not intended to be limiting, certain elements of the drawings may be omitted, enlarged or reduced to better illustrate the embodiments of the present invention, and do not represent the size of the actual product, and it is understood that some well-known structures, elements and descriptions thereof in the drawings may be omitted for persons skilled in the art.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, e.g., as a fixed connection, a detachable connection, or an integral connection; 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.
In order to solve the problem that the section size is difficult to accurately adjust when the section size in the extrusion process of a rubber product exceeds the fluctuation variation range allowed by the process requirement, the invention provides an extrusion production line capable of automatically adjusting the section size, which is shown in figures 1-5 and is used for extruding the rubber product, and comprises an extrusion mouth type adjusting component 1, a mouth type speed measuring roller 2, a receiving device 4, a continuous scale weighing and conveying device 5, a continuous scale weighing device 6, a section scanner 7 and a PLC (programmable logic controller) control system;
referring to fig. 2 and 3, the extrusion die adjusting assembly 1 is installed on an extruder head, and the extrusion die adjusting assembly 1 comprises a first die plate 1-1, a second die plate 1-2, a shifting plate 1-4/1-5 and a micro telescopic power element 1-6; the first mouth-shaped plate 1-1 and the second mouth-shaped plate 1-2 are opposite to each other in position and form a rubber extrusion channel 1-10, a plurality of micro telescopic power element mounting grooves and a shifting piece groove are formed in the second mouth-shaped plate 1-2, a micro telescopic power element 1-6 is mounted in each micro telescopic power element mounting groove, the telescopic direction of each micro telescopic power element 1-6 points to the rubber extrusion channel 1-10, the telescopic end of each micro telescopic power element 1-6 is fixedly connected with a shifting piece 1-4/1-5, and each shifting piece 1-4/1-5 is slidably arranged in the shifting piece groove in the second mouth-shaped plate 1-2, is precisely matched with the side wall of the shifting piece groove and can slide relatively; the mounting groove of the micro telescopic power element is communicated with the shifting piece groove, the shifting piece groove is communicated with the rubber extrusion channel 1-10, and the tail end of the shifting piece 1-4/1-5 far away from the micro telescopic power element 1-6 is just flush with the side wall of the rubber extrusion channel 1-10 in the initial state of the micro telescopic power element 1-6;
in the output direction of the extrusion channel 1-10 of the extrusion mouth shape regulating assembly 1, a mouth shape speed measuring roller 2 for measuring the extrusion speed of the rubber product 3, a receiving device 4 for receiving the rubber product 3 and a continuous scale weighing and conveying device 5 for conveying the rubber product 3 are sequentially arranged, and one side of the continuous scale weighing and conveying device 5 is provided with a continuous scale weighing device 6 for measuring the weight of the extruded rubber product and a section scanner 7 for testing the section size of the rubber product 3;
the data output ends of the mouth-shaped speed measuring roller 2, the continuous scale weighing device 6 and the section scanner 7 are all connected with the input end of a PLC control system, and the output end of the PLC control system is in control connection with the micro telescopic power elements 1-6 and the receiving device 4.
In the invention, when the shifting sheet is arranged, a plurality of shifting sheets can be arranged according to the section shape of the rubber product 3 and the section size required to be controlled, so that each section size parameter can be adjusted and controlled. Specifically, a plurality of cross-sectional shapes can be set according to the cross-sectional shape of the rubber product 3 and the cross-sectional size to be controlled, so that the cross-sectional size parameters of each part of the product can be adjusted and controlled. For example, FIG. 2 illustrates an extruded tread product, with # 1 paddles 1-4a/1-4b and # 2 paddles 1-5a/1-5b positioned laterally and in the crown portion, respectively, to control the product extrusion channels 1-10. Of course, different shapes of paddles 1-4/1-5 and different numbers of paddles 1-4/1-5 may be provided for different product extrusions. Each plectrum 1-4/1-5 can be correspondingly provided with one or more micro telescopic power elements 1-6, one plectrum is correspondingly provided with a plurality of micro telescopic power elements 1-6 to facilitate the stability of the movement of the plectrum 1-4/1-5, for example, in fig. 2, four micro telescopic power elements (1-6c/1-6d/1-6e/1-6f) are correspondingly arranged on two plectrums at the crown part, and two micro telescopic power elements (1-6a/1-6b/1-6g/1-6h) are respectively arranged on the plectrum at the side surface.
With continued reference to fig. 2 and 3, in order to make the whole more beautiful and convenient to overhaul, a cover plate groove is formed on the outer side plate surface of the second die plate 1-2, and the cover plate groove is communicated with the micro telescopic power element mounting groove and the poking piece groove; the cover plate groove is provided with a cover plate 1-3, the cover plate 1-3 can be fixed with a second mouth-shaped plate 1-2 through a # 1 screw 1-7, and the cover plate 1-3 is opened, so that the internal micro telescopic power element 1-6 and the shifting piece 1-4/1-5 can be observed and overhauled; when the cover plate 1-3 is arranged in the cover plate groove, the surface of the cover plate 1-3 is just flush with the outer side surface of the second mouth-shaped plate 1-2, the side surface of the cover plate 1-3 is just flush with the side wall of the rubber extrusion channel 1-10, and the shifting piece 1-4/1-5 is precisely matched with the side wall of the cover plate 1-3 and can slide relatively, so that the whole body is more neat and attractive.
In some preferred embodiments of the present invention, the first and second plates 1-1 and 1-2 are detachably connected, and specifically, they are connected by screws, such as the illustrated 2# screws 1-8, and the first and second plates 1-1 and 1-2 have opposite surfaces, one of which is provided with positioning pins 1-9 and the other of which is provided with matching positioning holes. Therefore, the relative positions of the two are convenient to determine, and the installation efficiency and the installation accuracy are improved.
The micro telescopic power elements 1-6 are micro servo electric cylinders or micro hydraulic oil cylinders. The power of the micro-telescopic power elements 1-6 is directed to the outside by means of slots, not shown schematically, in the second plate 1-2.
In some preferred embodiments of the present invention, the receiving device 4 is any one of a shrinking roller table, a conveying roller table or a conveying belt, or a series combination of any two or three of them.
By utilizing the extrusion production line, the invention also provides an extrusion control method capable of automatically adjusting the section size, which comprises the following steps:
after the machine is started, the rubber product 3 is extruded from an extrusion channel 1-10 of the extrusion mouth shape adjusting component 1, and the mouth shape speed measuring roller 2 tests the extrusion speed of the rubber product 3 and sends the extrusion speed to the PLC control system;
after the rubber product 3 is forcibly contracted at the receiving device 4, the rubber product reaches a continuous scale weighing device for automatic continuous weighing, the obtained actual weight value is sent to a PLC control system, the PLC control system calculates and compares the actual weight value with the standard weight value, if the average value of the actual weight of the rubber product 3 is larger or smaller than the standard weight value, the PLC control system sends a first control instruction to adjust the conveying linear speed of the receiving device 4, when the weight value is larger, the conveying line speed of the receiving device 4 is accelerated, and when the weight value is smaller, the conveying line speed of the receiving device 4 is slowed down;
the rubber product 3 reaches the section scanner 7 to be subjected to section scanning, the section scanner 7 sends the obtained actual section size value to the PLC control system, the PLC control system performs calculation and comparison, if the average value of the actual section size of the rubber product 3 is deviated from the set standard section size value, the part with the larger deviation value is corrected, the adjusting module sends a second control instruction to the micro telescopic power elements 1-6 at the corresponding parts in the mouth-shaped adjusting assembly, the micro telescopic power elements 1-6 are made to act, one or more poking pieces 1-4/1-5 at the corresponding parts are driven to extend or retract, and therefore the product extrusion channels 1-10 are finely adjusted, and the section size of the product can be guaranteed to have very high precision.
According to the method, the PLC control system specifically comprises a switch module, a setting module, a receiving module, a calculating module, a comparing module and an adjusting module;
the switch module is used for controlling the on and off of the mechatronic device;
the setting module is used for setting the specification of the rubber product 3 and the conveying speed of the receiving device 4, wherein the specification of the rubber product 3 comprises a standard weight value and/or a standard section size value of the rubber product 3;
the receiving module is used for receiving the extrusion speed value measured by the mouth-shaped speed measuring roller 2, receiving the actual weight value of the rubber product 3 sent by the continuous scale weighing device 6 and/or the actual section size value of the rubber product 3 sent by the section scanner 7, and sending the extrusion speed value, the actual weight value and/or the actual section size value to the calculating module;
the calculation module is used for calculating the average value of the actual weight values and/or the average value of the actual section size values;
the comparison module is used for comparing the average value of the standard weight value and the actual weight value and outputting the comparison result to the adjustment module; and/or the average value of the standard section size value and the actual section size value is compared, and the comparison result is output to the adjusting module;
and the adjusting module is used for sending a first control instruction to adjust the conveying speed of the receiving device 4 and/or sending a second control instruction to adjust the actions of the micro telescopic power elements 1-6 according to the received comparison result.
Therefore, the more specific automatic control method for the section size comprises the following steps:
(1) setting parameters: the specification of the rubber product 3 and the conveying linear speed of the receiving device 4 are set through a setting module of the PLC control system; the specification of the rubber product 3 comprises a standard weight value and a standard section size value of the rubber product 3;
(2) automatic preparation production of rubber product 3: after the machine is started, the rubber product 3 is extruded from the extrusion channels 1-10 of the extrusion mouth shape adjusting component 1, the mouth shape speed measuring roller 2 is used for testing the extrusion speed of the rubber product 3, the extrusion speed is converted into the extrusion linear speed through an encoder and then is sent to a receiving module, the extrusion speed is the actual extrusion linear speed and can be additionally displayed through a display device, and the PLC controls the receiving of the extrusion speed to judge whether the conveying speed of the receiving device 4 is adjusted in place; after the rubber product 3 is forcibly contracted at the receiving device 4, the rubber product reaches a continuous scale weighing device for automatic continuous weighing, the obtained actual weight value is sent to a receiving module, the actual weight value is calculated by a calculation module of a PLC control system and is compared by a comparison module, if the average value of the actual weight of the rubber product 3 is larger or smaller than the set standard weight value, an adjustment module sends a first control instruction to adjust the conveying linear speed of the receiving device 4, when the weight value is larger, the conveying line speed of the receiving device 4 is accelerated, and when the weight value is smaller, the conveying line speed of the receiving device 4 is slowed down; the rubber product 3 reaches the section scanner 7 to be subjected to section scanning, the section scanner 7 sends the obtained actual section size value to the receiving module, the actual section size value is calculated and compared by the calculation module of the PLC control system, if the average value of the actual section size of the rubber product 3 is deviated from the set standard section size value, the part with the larger deviation value is corrected, the adjusting module sends a second control instruction to the micro telescopic power elements 1-6 at the corresponding parts in the mouth-shaped adjusting assembly, the micro telescopic power elements 1-6 are enabled to act, one or more shifting pieces 1-4/1-5 at the corresponding parts are driven to extend or retract, and therefore the product extrusion channels 1-10 are subjected to fine adjustment, and the very high precision of the section size of the product can be guaranteed.
In the above steps, if the actual section size value of the rubber product 3 is deviated from the set standard section size value, when the average actual section size value of a certain part is larger than the standard section size value of the part, the adjusting module sends a second control instruction to the micro telescopic power element 1-6 at the corresponding part in the mouth-shaped adjusting assembly, so that the micro telescopic power element 1-6 extends to drive one or more poking sheets 1-4/1-5 at the corresponding part to extend, and the product extrusion channel 1-10 is finely adjusted; when the average value of the actual section size of a certain part is smaller than the standard section size value of the part, the adjusting module sends a second control instruction to the micro telescopic power element 1-6 at the corresponding part in the mouth-shaped adjusting assembly, so that the micro telescopic power element 1-6 contracts to drive one or more shifting pieces 1-4/1-5 at the corresponding part to retract, and the product extrusion channel 1-10 is finely adjusted.
The above description is intended to describe in detail the preferred embodiments of the present invention, but the embodiments are not intended to limit the scope of the claims of the present invention, and all equivalent changes and modifications made within the technical spirit of the present invention should fall within the scope of the claims of the present invention.
Claims (10)
1. An extrusion production line capable of automatically adjusting section size is used for extruding rubber products, and is characterized in that: the device comprises an extrusion mouth shape adjusting component, a mouth shape speed measuring roller, a receiving device, a continuous scale weighing and conveying device, a continuous scale weighing device, a section scanner and a PLC control system;
the extrusion mouth shape adjusting assembly is arranged on the extruder head and comprises a first mouth shape plate, a second mouth shape plate, a shifting sheet and a micro telescopic power element; the first die plate and the second die plate are opposite in position and form a rubber extrusion channel, a plurality of micro telescopic power element mounting grooves and a shifting piece groove are formed in the second die plate, a micro telescopic power element is mounted in each micro telescopic power element mounting groove, the telescopic direction of each micro telescopic power element points to the rubber extrusion channel, the telescopic end of each micro telescopic power element is fixedly connected with a shifting piece, the shifting piece is arranged in the shifting piece groove in the second die plate in a sliding mode, the micro telescopic power element mounting grooves are communicated with the shifting piece grooves, the shifting piece grooves are communicated with the rubber extrusion channel, and the tail end, far away from the micro telescopic power element, of each shifting piece is just flush with the side wall of the rubber extrusion channel in an initial state;
in the output direction of the extrusion channel of the extrusion mouth shape adjusting component, a mouth shape speed measuring roller for measuring the extrusion speed of the rubber product, a receiving device for receiving the rubber product and a continuous scale weighing and conveying device for conveying the rubber product are sequentially arranged, and one side of the continuous scale weighing and conveying device is provided with a continuous scale weighing device for measuring the weight of the extruded rubber product and a section scanner for testing the section size of the rubber product;
the data output ends of the mouth-shaped speed measuring roller, the continuous weighing device and the section scanner are all connected with the input end of the PLC control system, and the output end of the PLC control system is in control connection with the micro telescopic power element and the receiving device.
2. The extrusion line of claim 1, wherein: a cover plate groove is formed in the outer side plate surface of the second mouth-shaped plate and is communicated with the micro telescopic power element mounting groove and the shifting piece groove; a cover plate is arranged on the cover plate groove; when the apron was installed at the apron inslot, the face of apron just in time parallel and level with the outside face of second mouth of the staff board, the side of apron just in time parallel and level with the lateral wall that the passageway was extruded to rubber, plectrum and apron lateral wall, with plectrum groove lateral wall precise fit and relative slip.
3. The extrusion line of claim 1, wherein: the first mouth-shaped plate and the second mouth-shaped plate are detachably connected, one face of each of the first mouth-shaped plate and the second mouth-shaped plate is provided with a positioning pin, and the other face of each of the first mouth-shaped plate and the second mouth-shaped plate is provided with a matched positioning hole.
4. The extrusion line of claim 1, wherein: the micro telescopic power element is a micro servo electric cylinder or a micro hydraulic oil cylinder.
5. The extrusion line of claim 1, wherein: the receiving device is any one of a contraction roller way, a conveying roller way or a conveying belt, or a series combination of any two or three.
6. An extrusion control method capable of automatically adjusting section size, which is characterized in that the extrusion control method utilizes the extrusion production line of any one of claims 1 to 5, and the method comprises the following steps:
after the machine is started, the rubber product is extruded from an extrusion channel of the extrusion mouth shape adjusting assembly, and the mouth shape speed measuring roller tests the extrusion speed of the rubber product and sends the extrusion speed to the PLC control system;
after the rubber product is forcibly contracted at the receiving device, the rubber product reaches the continuous scale weighing device to be automatically and continuously weighed, the obtained actual weight value is sent to the PLC control system, the PLC control system carries out calculation and comparison, if the average value of the actual weight of the rubber product is larger or smaller than the standard weight value, the PLC control system sends a first control instruction to adjust the conveying linear speed of the receiving device, when the weight value is larger, the conveying linear speed of the receiving device is accelerated, and when the weight value is smaller, the conveying linear speed of the receiving device is slowed down;
rubber products reach section scanner department and carry out the section scanning, section scanner sends the actual section size value that obtains to PLC control system, calculate and compare through PLC control system, if the average value of rubber products's actual section size compares the standard section size value that sets for and has the deviation, then revise to the great position of deviation value, adjusting module sends the second control command and gives the miniature flexible power component of corresponding position in the mouth type adjusting part, let miniature flexible power component move, order to order about one or more plectrums of corresponding position and stretch out or retract, thereby extrude the passageway to the goods and finely tune, thereby can guarantee that goods section size has very high precision.
7. The extrusion control method according to claim 6, characterized in that: the PLC control system comprises a switch module, a setting module, a receiving module, a calculating module, a comparing module and an adjusting module;
the switch module is used for controlling the on and off of the mechatronic device;
the setting module is used for setting the specification of the rubber product and the conveying speed of the receiving device, and the specification of the rubber product comprises a standard weight value and/or a standard section size value of the rubber product;
the receiving module is used for receiving the extrusion speed value measured by the mouth-shaped speed measuring roller, receiving the actual weight value of the rubber product sent by the continuous scale weighing device and/or the actual section size value of the rubber product sent by the section scanner, and sending the extrusion speed value, the actual weight value and/or the actual section size value to the calculating module;
the calculation module is used for calculating the average value of the actual weight values and/or the average value of the actual section size values;
the comparison module is used for comparing the average value of the standard weight value and the actual weight value and outputting the comparison result to the adjustment module; and/or the average value of the standard section size value and the actual section size value is compared, and the comparison result is output to the adjusting module;
the adjusting module is used for sending a first control instruction to adjust the conveying speed of the receiving device and/or sending a second control instruction to adjust the action of the remote micro telescopic power element according to the received comparison result.
8. The extrusion control method according to claim 7, characterized by comprising the steps of:
(1) setting parameters: the specification of the rubber product and the conveying linear speed of the receiving device are set through a setting module of the PLC control system; the specification of the rubber product comprises a standard weight value and a standard section size value of the rubber product;
(2) automatic preparation production of rubber products: after the machine is started, the rubber product is extruded from an extrusion channel of the extrusion mouth shape adjusting assembly, the extrusion speed of the rubber product is tested by the mouth shape speed measuring roller, and the extrusion speed is converted into the extrusion linear speed by the encoder and then is sent to the receiving module; after the rubber product is forcibly contracted at the receiving device, the rubber product reaches the continuous scale weighing device to be automatically and continuously weighed, the obtained actual weight value is sent to the receiving module, the actual weight value is calculated by the calculation module of the PLC control system and is compared by the comparison module, if the average value of the actual weight of the rubber product is larger or smaller than the set standard weight value, the adjustment module sends a first control instruction to adjust the conveying linear speed of the receiving device, when the weight value is larger, the conveying line speed of the receiving device is accelerated, and when the weight value is smaller, the conveying line speed of the receiving device is slowed down; rubber products reach section scanner department and carry out the section scanning, section scanner sends the actual section size value that obtains for receiving module, calculation and comparison module through PLC control system calculate, if the average value of rubber products's actual section size compares the standard section size value of settlement and has the deviation, then revise to the great position of deviation value, the adjustment module sends second control command and gives the miniature flexible power component of corresponding position in the mouth type adjusting part, let miniature flexible power component move, order to order about one or more plectrums of corresponding position and stretch out or retract, thereby extrude the passageway to the goods and finely tune, thereby can guarantee that goods section size has very high precision.
9. The extrusion control method according to claim 8, characterized in that: if the actual section size value of the rubber product has a deviation compared with the set standard section size value, when the average actual section size value of a certain part is larger than the standard section size value of the part, the adjusting module sends a second control instruction to the micro telescopic power element at the corresponding part in the mouth-shaped adjusting assembly, so that the micro telescopic power element extends to drive one or more poking sheets at the corresponding part to extend out, and the extrusion channel of the product is finely adjusted; when the average value of the actual section size of a certain part is smaller than the standard section size value of the part, the adjusting module sends a second control instruction to the micro telescopic power element at the corresponding part in the mouth-shaped adjusting assembly, so that the micro telescopic power element contracts to drive one or more shifting pieces at the corresponding part to retract, and the product extrusion channel is finely adjusted.
10. The extrusion control method according to claim 6, characterized in that: when the shifting pieces are arranged, a plurality of shifting pieces are arranged according to the section shape of the rubber product and the section size to be controlled, so that all section size parameters can be adjusted and controlled.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113601809A (en) * | 2021-09-29 | 2021-11-05 | 天津赛象科技股份有限公司 | Extrusion equipment for compositely extruding rubber product and automatic control method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113601809A (en) * | 2021-09-29 | 2021-11-05 | 天津赛象科技股份有限公司 | Extrusion equipment for compositely extruding rubber product and automatic control method |
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