WO2022021829A1

WO2022021829A1 - Automatic weighing method for rubber parts

Info

Publication number: WO2022021829A1
Application number: PCT/CN2021/074782
Authority: WO
Inventors: 汤啸; 杨君平; 汤克红; 范淑贞
Original assignee: 浙江天台祥和实业股份有限公司
Priority date: 2020-07-31
Filing date: 2021-02-02
Publication date: 2022-02-03
Also published as: CN111823432B; CN111823432A

Abstract

An automatic weighing method for rubber parts. The method comprises the following steps: S1: start-up preparation; S2: formula preparation; S3: on-site confirmation; S4: formula download; S5': automatic alarm; S5: weighing and discharge; S5": ingredient check; and S6: ingredient collection. A feeding pipe is provided at an upper opening of a discharge compartment (51); a discharge helical blade (52) is rotatably provided in the discharge compartment (51) by means of a conveying shaft (53); a discharge plate (54) is provided below the discharge helical blade (52); a discharge port (541) is formed in the discharge plate (54); a conveying pipe (55) is fixed on the lower side wall of the discharge compartment (51), and the conveying pipe (55) is in communication with the inner compartment of the discharge compartment (51); a helical conveying blade (56) is rotatably provided in the conveying pipe (55) by means of the conveying shaft (53), and a discharge pipe (57) located right under the conveying pipe is connected to the conveying pipe (55); and a sealing slide plate (58) is slidingly inserted into the discharge pipe (57), and a metering scale is provided on the sealing slide plate (58), such that weight check of various ingredients can be performed, thereby achieving the function of rapid, efficient, and accurate automatic preparation of ingredients of rubber parts.

Description

A kind of automatic weighing method of rubber parts

technical field

The invention belongs to the technical field of rubber parts batching, in particular to an automatic weighing method for rubber parts.

Background technique

In the production process of the chemical industry, the ratio of the mixture is a very important production process. The speed and accuracy of the batching have a very important impact on the quality of the mixture. The current method of reclaiming materials generally adopts manual weighing. It is troublesome, not only takes up manpower, but also has large errors. The existence of human factors makes the batching process prone to quality accidents; in order to solve the above problems, some automated batching weighing has also appeared in recent years.

The Chinese patent discloses an automatic material weighing device, its application and automatic material weighing method. The patent application number is 2015104456338, which includes a feeding device, a weighing device and an electrical control system. The feeding device includes a fast feeding device, a feeding device Plate, baffle plate, sieve plate, vibrating feeder, weighing device including weighing steel frame, load cell, weighing hopper, discharge sealing cover, hopper door assembly and receiving bucket.

Although the above content can realize the function of automatic weighing of ingredients; but when there are many types of ingredients and the weight of each ingredient is different, multiple automatic weighing devices are needed to individually weigh multiple ingredients. The method also requires manual calculation of the total weight of the ingredients. At the same time, if there is an error in the weight of the ingredients, it will affect the normal and stable batching of the subsequent ingredients, and then affect the automatic, efficient and accurate weighing of the ingredients of the rubber parts.

In view of this, in order to overcome the above technical problems, our company designed and developed an automatic weighing method for rubber parts, and made a special automatic weighing method for ingredients of rubber parts, which solved the above technical problems.

SUMMARY OF THE INVENTION

In order to make up for the deficiencies of the prior art, the present invention proposes an automatic weighing method for rubber parts. The present invention is mainly used to solve the problem that when there are many types of ingredients and the weight of each ingredient is different, multiple automatic weighing methods are required. This method also needs to manually calculate the total weight of the ingredients. At the same time, if there is an error in the weight of the ingredients, it will affect the normal and stable batching of the subsequent ingredients, and then affect the rubber parts. The phenomenon of automatic, efficient and accurate weighing of ingredients.

The technical solution adopted by the present invention to solve the technical problem is: an automatic weighing method for rubber parts according to the present invention, and the method comprises the following steps:

S1: Startup preparation: Turn on the required equipment switch, turn on the upper computer, double-click the automatic weighing and batching system icon on the display desktop, and log in to enter the automatic weighing and batching system to check the rubber mixing production plan; check whether the corresponding raw materials of each material tank are sufficient; Prepare the raw materials required for batching; the work of this step is to confirm whether the communication between the 8802 weight instrument, the upper computer system, the man-machine control cabinet and the PLC is normal: whether the corresponding communication status indicator is normal; check the batching line and the independent weighing machine. Architecture: material storage tank, metering and controlled discharge equipment and tank scales, automatic shift assembly line are in normal state;

S2: Recipe preparation: After entering the host computer interface, click "Recipe Management" to enter the recipe management screen. Normally, there are formula names that can be selected in the formula list. Click any formula name in the formula list to enter "Modify formula" page, confirm the recipe name, the total number of recipes, confirm the position and the corresponding raw material name, raw material remarks, target value and tolerance value, set the confirmation material information to meet the job requirements; then save and exit;

S3: On-site confirmation: Confirm that the relevant conditions at the site are normal, including the supply of compressed air source; put the material bucket on the feeding bag and set it at the first position of the conveyor belt at the inlet of the ingredient; the tank scale and the connection motor power supply entering the assembly line Whether the supply is normal; in this step, if the bucket is not on the weighing platform of the tank at the inlet of the ingredients, the ingredients will not be carried out; and the tank itself has a maximum weighing capacity of 30KG and a sense of 0.005KG. Avoid items and personnel that exceed the rated weight. Or push the scale platform left and right;

S4: Recipe download: Click the "Real-time monitoring" button on the host computer interface to enter the real-time monitoring screen, and confirm that the target value and setting on each bin number under the "Automatic weighing and batching system" meet the job requirements; when the host computer interface displays When "communication" and "allow download" are green, it means download is available, click the green "allow download" to download the recipe to the PLC;

S5: Weighing and unloading: Press the "Start System" button on the panel of the main control electric box, the conveyor belts of each line will transmit the material barrel, and when the equipment automatically senses the material barrel, the conveyor chain pull rod will pull the material barrel forward. After entering directly below the metering-controlled discharging device set at the first bin number, the chain pull rod automatically stops, and the metering-controlled discharging device set at the first bin number will automatically unload the weighed ingredients. In the corresponding barrel, each bin number corresponds to each barrel for automatic unloading. After the unloading is completed, it goes directly to the re-inspection scale to check the total amount. If there is no error, it will be sent to the end normally, and the batching of the whole line is completed;

S6: Raw material collection: After the batching line is completed, when the conveyor belt transfers the material barrel to the end, the infrared automatic sensor senses the material barrel, and the arm automatically extends to push the material barrel to the end of the conveyor belt. The batching personnel will immediately take out the whole bag of materials, and mark the train sequence number on the outside of the feeding bag, tie the bag mouth, and place it in the corresponding batching plastic frame or plastic bucket storage area. Empty barrel fixed area, spare.

Preferably, in the step S5, it also includes a step S5': automatic alarm: when the unloading weight does not meet the tolerance value of the target value, the next bin number will not be unloaded, and the buckets will be directly transferred away. At the end of the total re-inspection of the scale, it will stop because the weight does not meet the tolerance value of the target value, the operation of the batching line will stop, and at the same time, the "alarm" light of the man-machine control cabinet will sound; the batching personnel will re-inspect the scale. The barrels that meet the weight standards are removed, placed in the "unqualified product area", and reported to the supervisor for confirmation and then discarded for disposal.

Preferably, after the step S5 is executed, it also includes a step S5": ingredient verification: when the number of ingredients is nearing the end, in order to prevent over-mixing of ingredients, the current formula number of the upper computer is checked, and when the last batching operation is completed, No more feeding buckets, it will stop automatically after finishing the number of recipes.

Preferably, in step S5, the metering controlled discharging equipment includes a discharging bin, a discharging screw blade, a conveying shaft, a discharging plate, a conveying pipe, a screw conveying blade, a discharging pipe and a sealing slide; the discharging The upper end of the bin is provided with a discharging pipe, and a discharging spiral leaf is arranged in the discharging bin through vertical rotation of the conveying shaft; the outer edge of the discharging spiral leaf is in rotational contact with the inner bin wall of the discharging bin; A discharge plate is arranged below the discharge spiral blade, and the discharge plate is sleeved on the conveying shaft through a bearing; a discharge port is opened on the discharge plate; the lower side wall of the discharge bin is fixed with a conveying shaft. The conveying pipe is connected with the inner silo of the discharging bin; a spiral conveying blade is arranged in the conveying pipe through the horizontal rotation of the conveying shaft, and a discharging pipe is communicated directly under the conveying pipe; the lower pipe of the discharging pipe The mouth is located directly above the conveyor belt; a sealing slide plate is slidably inserted in the discharge pipe, and a metering scale is arranged on the sealing slide plate; a sealing frame is fixed on the side of the discharging pipe, and a sealing frame is slidably arranged in the sealing frame through a cylinder. The bottom of the discharge port is connected to one end of the conveying pipe through a material guide pipe; the bottom end face of the discharge bin is provided with a No. 1 motor, and the output end of the No. 1 motor is connected with a vertically arranged conveying shaft; The side end face of the conveying pipe is provided with the No. 2 motor, and the No. 2 motor is connected with the horizontally arranged conveying shaft; the air cylinder, the No. 1 motor, the No. 2 motor and the measuring scale are connected to the human-machine control cabinet control system PLC. ;

When working, when the barrel is transported to the position of the first warehouse, the PLC will control the No. 1 motor and the No. 2 motor to rotate synchronously, and the No. 1 motor will drive the vertical discharge spiral blade to rotate. After the bottom end of the feeder is aligned with the discharge port on the discharge plate, the ingredients on the discharge spiral blade will fall into the discharge pipe through the discharge port, and then the PLC can control the speed and the number of turns of the No. 1 motor, and then Each turn of the discharging spiral blade will make the ingredients dropped from the discharging pipe to the discharging spiral blade into the discharging pipe through the discharging port, so that the spiral metering operation of the ingredients can be realized. When the ingredients fall into the discharging pipe through the discharging pipe When reaching the end of the conveying pipe, the spiral conveying blade set in the conveying pipe can be conveyed to the connection between the conveying pipe and the discharging pipe by the rotation of the No. 2 motor, so that the ingredients can fall into the sealing slide plate which is slidably inserted inside the discharging pipe. Then the weighing scale set on the sealing slide plate can re-weigh the ingredients. If the weight of the weighing ingredients and the target value set in the system for the ingredients are within the tolerance value range, the PLC controls the cylinder to shrink. The telescopic end of the cylinder will drive the sealing slide to slide into the sealing frame, and the ingredients falling on the sealing slide will fall into the corresponding barrel from the lower nozzle of the discharging tube by the extrusion force of the side wall of the discharging tube. , so that the ingredients can be accurately and automatically weighed; if the weight of the weighing ingredients is less than the target value set in the system, the No. 1 motor will continue to rotate, and the ingredients on the discharge spiral blade will pass through the discharge. The mouth is put into the material guide pipe, and then conveyed into the discharge pipe through the screw conveying blade. The weighing scale on the sealing slide plate will continue to weigh to reach the target value range, and then the cylinder shrinks to put the ingredients on the sealing slide plate into the material barrel. Then, the ingredients in the barrel will be checked by the re-inspection scale to improve the accuracy and efficiency of the automatic weighing of rubber parts; if the weight of the weighing ingredients is greater than the target set in the system for the ingredients When the value is set, the telescopic end of the cylinder will shrink and the ingredients will be put into the bucket accordingly, and then step S5' will work. Non-conforming product area”, report to the supervisor for confirmation and scrap it for disposal.

Preferably, an arc-shaped elastic bag is arranged under one end of the conveying pipe, and a spring is arranged inside the arc-shaped elastic bag; the upper surface of the arc-shaped elastic bag is aligned with the nozzle of the material guide pipe; The vertically arranged conveying shaft is sleeved with a rotating disk, and the rotating disk is located below the arc-shaped elastic bag; the upper end surface of the rotating disk is evenly provided with a plurality of extrusion protrusions, and the extrusion protrusions are connected with the arc-shaped elastic bag. The lower surface of the bag is in squeeze contact; when working, when the No. 1 motor drives the conveyor shaft to rotate, the rotation of the conveyor shaft will drive the rotating disc to rotate on the bottom end face of the conveying pipe, and the multiple extrusion protrusions set on the upper end face of the rotating disc will rotate. Squeeze to the lower end surface of the arc-shaped elastic bag, the spring set will make the upper surface of the arc-shaped elastic bag vibrate under the pressing force of the extrusion protrusion, and the set arc-shaped elastic bag is aligned with the nozzle of the material guide tube. , and then the ingredients falling from the guide tube will fall on the upper surface of the arc-shaped elastic bag, and the vibration of the upper surface of the arc-shaped elastic bag will prevent the wet ingredients from adhering to the inner wall of the bottom end of the conveying pipe due to the falling gravity. The rotation of the arc-shaped elastic bag and the extrusion protrusion cooperates. When the metered and controlled discharge equipment discharges wet ingredients, because the discharge tray and the conveying pipe are connected through the material guide pipe, and there is a certain height difference, and when the wet ingredients are discharged When the ingredients fall into the bottom end of the conveying pipe, the impact of gravity on the bottom end of the conveying pipe will cause the ingredients to stick to the pipe wall of the conveying pipe, thereby affecting the accurate and efficient automatic weighing of the ingredients.

Preferably, a plurality of elastic guide plates are arranged inside the material guide tube, and the plurality of elastic guide plates are arranged in a dislocation up and down; an expansion cavity is opened inside the elastic guide plate, and the expansion cavity passes through the air guide tube It is connected to the arc-shaped elastic bag; when working, the elastic baffles arranged in the dislocation of the material guide pipe can guide the flow of the ingredients falling from the discharge port, which can effectively prevent the impact force of the weight when the ingredients fall from being too large. This will lead to the phenomenon of sticking to the inner wall of the delivery tube; at the same time, when the arc-shaped elastic bag is subjected to the extrusion force of the extrusion protrusion, the gas inside the arc-shaped elastic bag will enter the inflation cavity through the airway, so that the elastic diversion The upper end face of the plate produces elastic expansion vibration. The elastic expansion vibration of the upper surface of the elastic deflector plate can not only reduce the effect of gravity impact when the ingredients fall, but also can elastically vibrate and crush the agglomerated or agglomerated ingredients. Reduce the phenomenon of ingredients sticking on the surface of the elastic baffle; the air source inside the arc-shaped elastic bag can not only make multiple elastic baffles have the effect of elastic expansion at the same time, but also retain the inside of the arc-shaped elastic bag There are some air sources to prevent the arc-shaped elastic bag from being deformed too much under the extrusion force of the extrusion protrusion, which in turn causes the upper surface of the arc-shaped elastic bag to bulge, which in turn affects the safe and stable rotation of the screw conveyor blade.

Preferably, one end of the conveying pipe is provided with an elastic arc-shaped plate, and the elastic arc-shaped plate is located at the position of the nozzle on one side of the discharging pipe; the outer ring wall of the horizontally arranged conveying shaft in the conveying pipe is inclined and provided with elastic Extrusion rod, and the elastic extrusion rod rotates and squeezes to the side wall of the elastic arc plate; the inner side wall of the elastic arc plate is elastically connected to the side wall of the discharge pipe through the spring; when working, when the No. 2 motor drives When the horizontally arranged conveying shaft rotates, the spiral conveying blade can convey the ingredients in the conveying pipe to the discharging pipe, and the elastic arc plate set at the same time can play the effect of elastic vibration guiding for the other end of the conveying pipe. When the elastic extrusion rod is rotated, the elastic arc-shaped plate will be squeezed, and the elastic arc-shaped plate will be dented, and the spring provided on the side wall of the elastic arc-shaped plate will be compressed. After the arc plate is squeezed, the elastic thrust of the spring will cause the elastic arc plate to produce elastic vibration, and the elastic vibration of the elastic arc plate can make the ingredients gathered on the surface vibrate and shake off into the discharge pipe, preventing There is a cavity between it and the discharge pipe, which causes the ingredients conveyed by the screw conveyor to accumulate and fall into the cavity, which in turn affects the accurate and efficient weighing of the ingredients by the metering-controlled discharge equipment.

The beneficial effects of the present invention are as follows:

1. In the present invention, a plurality of warehouse numbers are set, and each warehouse number is provided with a metering-controlled discharging device, and the metering-controlled discharging device set at the warehouse number will automatically unload the weighed ingredients. In the corresponding barrel, each bin number corresponds to each barrel for automatic unloading, and directly to the re-inspection scale for total review. At the same time, the weight of various ingredients can be checked and checked, so as to realize the function of fast, efficient and accurate automatic batching of rubber parts.

2. In the present invention, by measuring the controlled discharge equipment, the PLC can control the rotation speed and the number of turns of the No. 1 motor, so that each turn of the discharge spiral blade will pass the ingredients that fall from the discharge pipe to the discharge spiral blade through the discharge spiral. The discharge port is put into the discharge pipe, and then the spiral metering operation of the ingredients can be realized. The weighing scale set on the sealing slide plate can re-weigh the ingredients, so that the metering-controlled discharging equipment can accurately set the target value of the system. Efficiently put it into the barrel, which improves the precise discharge function of the metered and controlled discharge equipment.

3. In the present invention, through the rotation of the arc-shaped elastic bag and the extrusion protrusion, when the metered and controlled discharge equipment is discharged into wet ingredients, because the discharge tray and the conveying pipe are connected through the material guide pipe, and have There is a certain height difference, and when the wet ingredients fall into the bottom end of the conveying pipe, the impact of gravity on the bottom end of the conveying pipe will cause the ingredients to stick to the pipe wall of the conveying pipe, thereby affecting the accurate and efficient automatic weighing of the ingredients. Effect.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings.

Fig. 1 is the method flow chart of the present invention;

Fig. 2 is the assembly drawing of conveyor belt of the present invention and a plurality of position numbers;

Fig. 3 is the assembly drawing of a plurality of position numbers of the present invention;

Fig. 4 is an enlarged view of the metered controlled discharge device in Fig. 2 of the present invention;

Fig. 5 is the perspective view of the metering-controlled discharging device of the present invention;

Fig. 6 is the sectional view of the metering controlled discharging device of the present invention;

Fig. 7 is the enlarged view of the arc-shaped elastic bag in Fig. 6 of the present invention;

In the figure: conveyor belt 1, tank scale 2, bin number 3, chain pull rod 4, metering controlled discharge equipment 5, discharge bin 51, discharge spiral blade 52, conveying shaft 53, discharge plate 54, discharge port 541, conveying pipe 55, screw conveying blade 56, discharging pipe 57, sealing slide plate 58, material guiding pipe 59, curved elastic bag 6, rotating disc 7, extrusion protrusion 8, elastic deflector 9, expansion cavity 91 , Air guide tube 10 , elastic arc plate 11 , elastic extrusion rod 12 .

detailed description

An automatic weighing method for rubber parts according to an embodiment of the present invention will be described as follows using FIG. 1 to FIG. 7 .

As shown in Fig. 1-Fig. 7, an automatic weighing method for rubber parts according to the present invention includes the following steps:

S1: Startup preparation: Turn on the required equipment switch, turn on the upper computer, double-click the automatic weighing and batching system icon on the display desktop, and log in to enter the automatic weighing and batching system to check the rubber mixing production plan; check whether the corresponding raw materials of each material tank are sufficient; Prepare the raw materials required for batching; the work of this step is to confirm whether the communication between the 8802 weight instrument, the upper computer system, the man-machine control cabinet and the PLC is normal: whether the corresponding communication status indicator is normal; check the batching line and the independent weighing machine. Structure: material storage tank, metering controlled discharge equipment 5 and tank scale 2, automatic shift assembly line are in normal state;

S3: On-site confirmation: Confirm that the relevant conditions at the site are normal, including the supply of compressed air sources; put the material bucket on the feeding bag, and set it at the first position of the conveyor belt 1 at the ingredient inlet; the tank scale 2, the connection into the assembly line Check whether the power supply of the motor is normal; in this step, if the material bucket is not on the weighing platform of the tank scale at the inlet of the batching, the batching will not be carried out; and the maximum weighing capacity of the tank scale 2 itself is 30KG, and the inductance is 0.005KG, and items exceeding the rated weight should be avoided. , Personnel presses or pushes the scale platform left and right;

S4: Recipe download: Click the "real-time monitoring" button on the host computer interface to enter the real-time monitoring screen, and confirm that the target value and setting on the 3 material tanks of each bin number under the "automatic weighing and batching system" meet the operation requirements; when the host computer interface When "Communication" and "Download Allowed" are displayed in green, it means download is available, click the green "Allow Download" to download the recipe to the PLC;

S5: Weighing and unloading: Press the "Start System" button on the panel of the main control electric box, the conveyor belt 1 of each line will convey the material barrel, and when the equipment automatically senses the material barrel, the conveyor chain pull rod 4 will move the material barrel forward After pulling and pushing into the right under the metering controlled discharging device 5 set at the first bin number 3, the chain pull rod 4 stops automatically, and the metering controlled discharging device 5 set at the first bin number 3 will weigh. The measured ingredients are automatically unloaded into the corresponding buckets, and each bin number 3 is automatically unloaded for each bucket in turn. After the unloading is completed, it goes directly to the re-inspection scale to check the total amount. end, the whole line ingredients are completed;

S6: Raw material collection: After the batching line is completed, when the conveyor belt 1 transfers the barrel to the end, the infrared automatic sensor senses the barrel, and the arm automatically extends to push the barrel with material to the end of the conveyor belt. , the batching personnel will immediately take out the whole bag of materials, and mark the train sequence number on the outside of the feeding bag, tie the bag mouth, and place it in the corresponding batching plastic frame or plastic bucket storage area. In the empty barrel setting area, spare.

As an embodiment of the present invention, in the step S5, it also includes a step S5': automatic alarm: when the blanking weight does not meet the target value tolerance value, the next bin number 3 will not be blanked, When each material barrel is directly transferred to the final total amount re-inspection scale, it will stop because the weight does not meet the tolerance value of the target value, and the operation of the batching line will stop, and at the same time, the "alarm" light of the man-machine control cabinet will sound; The personnel will remove the barrels that do not meet the weight standard on the re-inspection scale, put them in the "unqualified product area", and report to the supervisor for confirmation and scrap them for disposal.

As an embodiment of the present invention, after the step S5 is completed, it also includes step S5": ingredient verification: when the number of ingredients is nearing the end, in order to prevent over-mixing of ingredients, the current formula number of the upper computer is checked. When the last batching operation is performed, the bucket will no longer be discharged, and it will automatically stop after completing the batching of the number of recipes.

As an embodiment of the present invention, in step S5, the metering-controlled discharging device 5 includes a discharging bin 51, a discharging screw blade 52, a conveying shaft 53, a discharging plate 54, a conveying pipe 55, and a screw conveying blade 56. The discharging pipe 57 and the sealing slide plate 58; the upper end of the discharging bin 51 is provided with a discharging pipe, and the discharging spiral blade 52 is arranged in the discharging bin 51 through the vertical rotation of the conveying shaft 53; The outer edge of the discharging spiral blade 52 is in rotational contact with the inner warehouse wall of the discharging bin 51; a discharging plate 54 is provided below the discharging spiral blade 52, and the discharging plate 54 is sleeved on the conveying shaft 53 through a bearing. ; The discharge plate 54 is provided with a discharge port 541; the lower side wall of the discharge bin 51 is fixed with a conveying pipe 55, and the conveying pipe 55 is communicated with the inner warehouse of the discharging bin 51; the conveying pipe 55 A spiral conveying leaf 56 is arranged inside the conveying shaft 53 to rotate in the horizontal direction, and a discharging pipe 57 is communicated directly below the conveying pipe 55; the lower nozzle of the discharging pipe 57 is located directly above the conveyor belt 1; A sealing slide 58 is slidably inserted into the tube 57, and a metering scale is arranged on the sealing slide 58; a sealing frame is fixed on the side of the discharging tube 57, and a sealing slide 58 is slidably arranged in the sealing frame through a cylinder; The bottom of the material port 541 is connected to one end of the conveying pipe 55 through the material guiding pipe 59; the bottom end face of the discharging bin 51 is provided with a No. 1 motor, and the output end of the No. 1 motor is connected with the vertically arranged conveying shaft 53; The side end face of the conveying pipe 55 is provided with the No. 2 motor, and the No. 2 motor is connected with the horizontally arranged conveying shaft 53; the air cylinder, the No. 1 motor, the No. 2 motor and the measuring scale are all connected to the man-machine control cabinet control. System PLC;

During operation, when the barrel is transported to the position of the first warehouse, the PLC will control the No. 1 motor and the No. 2 motor to rotate synchronously, and the No. 1 motor will drive the vertical discharge screw blade 52 to rotate. After the bottom end of the leaf 52 is aligned with the discharge port 541 on the discharge plate 54, the ingredients on the discharge spiral blade 52 will fall into the discharge pipe 57 through the discharge port 541, and then the PLC can control the No. 1 motor. The rotation speed and the number of turns, so that each turn of the discharging spiral blade 52 will drop the ingredients from the discharging pipe to the discharging helical blade 52 into the discharging pipe 57 through the discharging port 541, and then the ingredients can be realized. When the ingredients fall into the end of the conveying pipe 55 through the discharging pipe 57, the spiral conveying blade 56 set in the conveying pipe 55 can be conveyed to the conveying pipe 55 and the discharging pipe 57 by the rotation of the No. 2 motor. At the connection point, the ingredients can fall on the sealing slide 58 that is slidably inserted inside the discharge pipe 57, and then the weighing scale set on the sealing slide 58 can re-weigh the ingredients. After the target value of the ingredients set in the system is within the tolerance range, the PLC controls the cylinder to shrink, the telescopic end of the cylinder will drive the sealing slide 58 to slide into the sealing frame, and the ingredients falling on the sealing slide 58 will be placed on the The extrusion force of the side wall of the material pipe 57 falls into the corresponding material barrel from the lower nozzle of the discharge pipe 57, so that the ingredients can be accurately and automatically weighed; if the weight of the weighing ingredients is less than the ingredients When the target value is set in the system, the No. 1 motor will continue to rotate, and the ingredients on the discharge screw blade 52 will be put into the material guide pipe 59 through the discharge port 541, and then transported to the discharge pipe through the screw conveying blade 56. In 57, the weighing scale on the sealing slide 58 will continue to weigh, and then reach the target value range, and then the cylinder shrinks to put the ingredients on the sealing slide 58 into the barrel; then the ingredients in the barrel will be rechecked. The total amount is checked to improve the accuracy and efficiency of automatic weighing of rubber parts; if the weight of the weighing ingredients is greater than the target value set in the system, the telescopic end of the cylinder will shrink and then the ingredients will be added. Correspondingly, put them into the bucket, and then step S5' will work. The batching personnel will remove the bucket that does not meet the weight standard on the re-inspection scale, put it in the "unqualified product area", and report it to the supervisor for confirmation and scrap it for disposal.

As an embodiment of the present invention, an arc-shaped elastic bag 6 is provided under one end of the conveying tube 55, and a spring is arranged inside the arc-shaped elastic bag 6; The nozzles are aligned; the conveying shaft 53 vertically arranged in the discharging bin 51 is sleeved with a rotating disk 7, and the rotating disk 7 is located below the arc-shaped elastic bag 6; the upper end surface of the rotating disk 7 is evenly arranged There are a plurality of extrusion protrusions 8, and the extrusion protrusions 8 are in extrusion contact with the lower surface of the arc-shaped elastic bag 6; during operation, when the No. 1 motor drives the conveying shaft 53 to rotate, the rotation of the conveying shaft 53 will drive the rotating disk 7. When the bottom end face of the conveying pipe 55 rotates, the plurality of extrusion protrusions 8 provided on the upper end surface of the rotating plate 7 will rotate and squeeze to the lower end face of the arc-shaped elastic bag 6, and the springs provided are pressed by the extrusion protrusions 8. Under the force, the upper surface of the arc-shaped elastic bag 6 will vibrate, and the set arc-shaped elastic bag 6 is aligned with the nozzle of the material guide pipe 59, and then the ingredients falling from the material guide pipe 59 will fall into the arc-shaped elastic bag 6. On the upper surface, the vibration of the upper surface of the arc-shaped elastic bag 6 will prevent the wet ingredients from adhering to the inner wall of the bottom end of the conveying pipe 55 due to the falling gravity; When the metered and controlled discharge device 5 discharges wet ingredients, because the discharge tray and the conveying pipe 55 are connected through the conveying pipe 59 and have a certain height difference, when the wet ingredients fall into the bottom end of the conveying pipe 55 When the gravitational force hits the bottom end of the conveying pipe 55, the ingredients will stick to the pipe wall of the conveying pipe 55, thereby affecting the accurate and efficient automatic weighing of the ingredients.

As an embodiment of the present invention, a plurality of elastic baffles 9 are arranged inside the material guide pipe 59 , and the plurality of elastic baffles 9 are arranged in a dislocation up and down; There is an expansion cavity 91, and the expansion cavity 91 is connected to the arc-shaped elastic bag 6 through the air guide tube 10; during operation, the elastic baffle 9 arranged in a dislocation inside the guide tube 59 can guide the ingredients falling from the discharge port 541. The effect of flow can effectively prevent the phenomenon that the impact force of the weight when the ingredients fall is too large, which leads to the phenomenon of sticking to the inner wall of the conveying pipe 55; The gas inside the elastic bag 6 will enter the expansion cavity 91 through the air guide 10, so that the upper end face of the elastic deflector 9 produces elastic expansion vibration. The effect of gravity impact, at the same time, the agglomerated or agglomerated ingredients can be elastically vibrated and crushed, and at the same time, it can also reduce the phenomenon of ingredients sticking on the upper surface of the elastic baffle 9; The source can not only make the multiple elastic baffles 9 have the effect of elastic expansion at the same time, but also some air sources will remain inside the arc-shaped elastic bag 6 to prevent the arc-shaped elastic bag 6 from pressing the extrusion force of the protrusion 8. If the lower deformation is too large, the upper surface of the arc-shaped elastic bag 6 is bulged, which affects the safe and stable rotation of the screw conveyor blade 56 .

As an embodiment of the present invention, one end of the conveying pipe 55 is provided with an elastic arc-shaped plate 11, and the elastic arc-shaped plate 11 is located at the nozzle position on one side of the discharging pipe 57; the conveying pipe 55 is arranged horizontally inside The outer ring wall of the conveying shaft 53 is inclined with an elastic extrusion rod 12, and the elastic extrusion rod 12 is rotated and squeezed to the side wall of the elastic arc plate 11; the inner side wall of the elastic arc plate 11 is elastically elasticized by a spring Connected to the side wall of the discharge pipe 57; during operation, when the No. 2 motor drives the horizontally arranged conveying shaft 53 to rotate, the screw conveying blade 56 can transport the ingredients in the conveying pipe 55 into the discharging pipe 57, and the set at the same time The elastic arc-shaped plate 11 can play the effect of elastic vibration guide for the other end of the conveying pipe 55, and the elastic extrusion rod 12 arranged on the outer wall of the conveying shaft 53 will squeeze the elastic arc-shaped plate 11 when it rotates, and make the elastic arc plate 11 squeezed. The elastic arc-shaped plate 11 is concave, and the spring provided on the side wall of the elastic arc-shaped plate 11 will be compressed. 11 produces elastic vibration, and the elastic vibration of the elastic arc-shaped plate 11 can make the ingredients gathered on the surface vibrate and shake off into the discharge pipe 57 to prevent the existence of a cavity between the other end of the conveying pipe 55 and the discharge pipe 57, and then As a result, the ingredients conveyed by the screw conveyor blades 56 are piled up and fall into the cavity, thereby affecting the accurate and efficient weighing of the ingredients by the metering-controlled discharging device 5 .

The specific workflow is as follows:

During operation, when the barrel is transported to the position of the first warehouse, the PLC will control the No. 1 motor and the No. 2 motor to rotate synchronously, and the No. 1 motor will drive the vertical discharge screw blade 52 to rotate. After the bottom end of the leaf 52 is aligned with the discharge port 541 on the discharge plate 54, the ingredients on the discharge spiral blade 52 will fall into the discharge pipe 57 through the discharge port 541, and then the PLC can control the No. 1 motor. The rotation speed and the number of turns, so that each turn of the discharging spiral blade 52 will drop the ingredients from the discharging pipe to the discharging helical blade 52 into the discharging pipe 57 through the discharging port 541, and then the ingredients can be realized. When the ingredients fall into the end of the conveying pipe 55 through the discharging pipe 57, the spiral conveying blade 56 set in the conveying pipe 55 can be conveyed to the conveying pipe 55 and the discharging pipe 57 by the rotation of the No. 2 motor. At the connection point, the ingredients can fall on the sealing slide 58 that is slidably inserted inside the discharge pipe 57, and then the weighing scale set on the sealing slide 58 can re-weigh the ingredients. After the target value of the ingredients set in the system is within the tolerance range, the PLC controls the cylinder to shrink, the telescopic end of the cylinder will drive the sealing slide 58 to slide into the sealing frame, and the ingredients falling on the sealing slide 58 will be placed on the The extrusion force of the side wall of the material pipe 57 falls into the corresponding material barrel from the lower nozzle of the material discharge pipe 57, so that the ingredients can be accurately and automatically weighed.

In the description of the present invention, it is to be understood that the terms "center", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate The orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation or be constructed in a specific orientation. and operation, and therefore should not be construed as limiting the protection scope of the present invention.

Although the present invention is described through specific embodiments, those skilled in the art should understand that various changes and equivalent substitutions can be made to the present invention without departing from the scope of the present invention. In addition, various modifications may be made to adapt a particular situation or material to the invention without departing from the scope of the invention. Therefore, the inventions are not to be limited to the specific embodiments disclosed, but are to include all embodiments falling within the scope of the claims of this invention.

Claims

An automatic weighing method for rubber parts, characterized in that: the method comprises the following steps:

S1: Startup preparation: turn on the required equipment switch, turn on the upper computer, double-click the automatic weighing and batching system icon on the desktop of the display screen, and log in to enter the automatic weighing and batching system, check the rubber mixing production plan; check whether the corresponding raw materials of each material tank are sufficient; Raw materials for preparing ingredients;

S2: Recipe preparation: After entering the host computer interface, click "Recipe Management" to enter the recipe management screen. Normally, there are formula names that can be selected in the formula list. Click any formula name in the formula list to enter "Modify formula" page, confirm the recipe name, the total number of recipes, confirm the position and the corresponding raw material name, raw material remarks, target value and tolerance value, set the confirmation material information to meet the job requirements; then save and exit;

S3: On-site confirmation: confirm that the relevant conditions at the site are normal, including the supply of compressed air sources; put the material barrel on the feeding bag, and set it at the first position of the conveyor belt (1) at the ingredient inlet; tank scales (2), Whether the power supply of the connecting motor entering the assembly line is normal;

S4: Recipe download: Click the "Real-time monitoring" button on the upper computer interface to enter the real-time monitoring screen, and confirm that the target value and setting on the material tank of each position number (3) under the "Automatic weighing and batching system" meet the operation requirements; when When the interface of the host computer shows that "communication" and "allow download" are green, it means that download is available, click the green "allow download" to download the recipe to the PLC;

S5: Weighing and unloading: Press the "Start System" button on the panel of the main control electric box, the conveyor belt (1) of each line will convey the material barrel, and when the equipment automatically senses the material barrel, the conveyor chain lever (4) will After the barrel is pulled forward and pushed into the right under the metering controlled discharge device (5) set at the first bin number (3), the chain rod (4) automatically returns to the first bin number (3). The set metering and controlled discharging equipment (5) will automatically unload the weighed ingredients into the corresponding buckets, and then each bin number (3) will automatically unload corresponding to each bucket in turn. After the unloading is completed Go directly to the re-inspection scale to check the total amount, and if there is no error, it will be sent to the end normally, and the batching of the whole line will be completed;

S6: Raw material collection: After the batching of the batching line is completed, when the conveyor belt (1) conveys the material barrel to the end, after the infrared automatic sensor senses the material barrel, the arm automatically extends to push the material barrel to the conveyor belt. At the end, the batching personnel will immediately take out the whole bag of materials, and mark the train sequence number on the outside of the feeding bag, tie the bag mouth, and place it in the corresponding batching plastic frame or plastic bucket placement area, and then cover the feeding bag with the empty material barrel. , put it in the empty bucket set-up area for spare.
An automatic weighing method for rubber parts according to claim 1, characterized in that: in the step S5, it also includes a step S5': automatic alarm: when the blanking weight does not meet the tolerance value of the target value, Then the next bin number (3) will no longer be unloaded. When each material bucket directly flows to the final total amount re-inspection scale, it will stop because the weight does not meet the target value tolerance value, and the batching line operation transmission will stop. At the same time, the "alarm" light of the man-machine control cabinet is on and sounding; the batching personnel will remove the barrels that do not meet the weight standard on the re-inspection scale, put them in the "unqualified product area", and report to the supervisor for confirmation and scrap them for disposal.
An automatic weighing method for rubber parts according to claim 2, characterized in that: after the execution of the step S5 is completed, it further comprises a step S5": batching verification: when the batching quantity is nearing the end, in order to prevent excessive batching Matching, check the current recipe number of the host computer, when the last batching operation is completed, the bucket will no longer be discharged, and it will automatically stop after completing the recipe number batching.
An automatic weighing method for rubber parts according to claim 3, characterized in that: in step S5, the metering-controlled discharging device (5) comprises a discharging bin (51), a discharging spiral blade (52) , conveying shaft (53), discharging plate (54), conveying pipe (55), screw conveying blade (56), discharging pipe (57) and sealing slide plate (58); the upper end of the discharging bin (51) A discharging pipe is arranged at the mouth of the bin, and a discharging screw blade (52) is arranged in the discharging bin (51) through vertical rotation of the conveying shaft (53); the outer edge of the discharging screw blade (52) is connected with the discharging screw The inner bin wall of the bin (51) is in rotational contact; a discharging plate (54) is arranged below the discharging spiral blade (52), and the discharging plate (54) is sleeved on the conveying shaft (53) through a bearing; A discharging port (541) is opened on the discharging plate (54); a conveying pipe (55) is fixed on the lower side wall of the discharging bin (51), and the conveying pipe (55) is connected to the discharging bin (51). ) is communicated with the inner warehouse; the conveying pipe (55) is provided with a spiral conveying blade (56) through the horizontal rotation of the conveying shaft (53), and a discharging pipe (57) is communicated directly below the conveying pipe (55); The lower nozzle of the discharge pipe (57) is located directly above the conveyor belt (1); a sealing slide plate (58) is slidably inserted into the discharge pipe (57), and a metering slide plate (58) is provided on the sealing slide plate (58). A sealing frame is fixed on the side of the discharging pipe (57), and a sealing slide plate (58) is slidably arranged in the sealing frame through a cylinder; to one end of the conveying pipe (55); the bottom end face of the discharging bin (51) is provided with a No. 1 motor, and the output end of the No. 1 motor is connected with a vertically arranged conveying shaft (53); the conveying pipe (55) The side end face of ) is provided with No. 2 motor, and the No. 2 motor is connected with the horizontally arranged conveying shaft (53); the air cylinder, No. 1 motor, No. 2 motor and the measuring scale are connected to the man-machine control cabinet control system PLC.
An automatic weighing method for rubber parts according to claim 4, characterized in that: an arc-shaped elastic bag (6) is arranged under one end of the conveying pipe (55), and an arc-shaped elastic bag (6) is internally provided with an arc-shaped elastic bag (6). a spring; the upper surface of the arc-shaped elastic bag (6) is aligned with the nozzle of the material guide pipe (59); a rotating disk is sleeved on the conveying shaft (53) vertically arranged in the discharging bin (51) (7), and the rotating disk (7) is located below the arc-shaped elastic bag (6); the upper end surface of the rotating disk (7) is evenly provided with a plurality of extrusion protrusions (8), and the extrusion protrusions ( 8) Press contact with the lower surface of the arc-shaped elastic bag (6).
An automatic weighing method for rubber parts according to claim 5, characterized in that: a plurality of elastic baffles (9) are arranged inside the material guide pipe (59), and a plurality of elastic baffles ( 9) Both are arranged up and down dislocation; an expansion cavity (91) is opened inside the elastic baffle (9), and the expansion cavity (91) is connected to the arc-shaped elastic bag (6) through the air conduit (10).
An automatic weighing method for rubber parts according to claim 4, characterized in that: one end of the conveying pipe (55) is provided with an elastic arc-shaped plate (11), and the elastic arc-shaped plate (11) is located at the discharging position. The position of the nozzle on one side of the pipe (57); an elastic extrusion rod (12) is obliquely arranged on the outer ring wall of the horizontally arranged conveying shaft (53) in the conveying pipe (55), and the elastic extrusion rod (12) ) is rotated and squeezed to the side wall of the elastic arc-shaped plate (11); the inner side wall of the elastic arc-shaped plate (11) is elastically connected to the side wall of the discharge pipe (57) through a spring.