An automatic feeding device for masterbatch and its feeding control system

Abstract

The invention discloses an automatic feeding device for masterbatch and a feeding control system thereof, which are applied to the technical field of automatic feeding of masterbatch, and comprise a conveyor and a screening mechanism, wherein the screening mechanism is arranged above the left side of the conveyor, and the screening mechanism is used to break up and screen out agglomerated masterbatch and main raw materials of products, and the conveyor is used to convey masterbatch and main raw materials of products; the screening mechanism comprises a breaking up component and a screening component, and the breaking up component is arranged above the screening component, and the screening component comprises a second shell, an electric sieve plate and a second drive, and the electric sieve plate is arranged inside the second shell, and the electric sieve plate is used to screen large particles or agglomerated masterbatch and main raw materials of products, and the second drive is fixed to the second side of the shell, and the bottom of the left end of the electric sieve plate is fixedly connected with a rotating shaft and a baffle, and the invention can screen masterbatch, reduce blockage, and improve production efficiency and quality.

Description

Technical Field

[0001] The invention relates to the technical field of automatic feeding of masterbatches, in particular to an automatic feeding device of masterbatches and a feeding control system thereof. Background Art

[0002] Masterbatch is a new type of colorant specially used for polymer materials, mainly used in plastics. Masterbatch is composed of three basic elements: pigment or dye, carrier and additive. It is an aggregate made by uniformly loading an extraordinary amount of pigment into the resin, which can be called pigment concentrate, so its tinting power is higher than the pigment itself.

[0003] During the melt extrusion stage, masterbatches generally need to be fed through a feed hopper. Since the feed hopper is large, when particles are piled up inside, the gaps between particles are too small, and the particles squeeze each other, which will cause blockage in the discharge of particles and affect feeding. At the same time, when the masterbatch raw materials are poorly stored, they will also agglomerate, causing blockage in the discharge, making feeding difficult and affecting overall production efficiency. Secondly, when the agglomerated masterbatch raw materials enter the melting area, it is difficult to melt them all within the set time, and the dispersion is poor, which reduces the production quality of the product.

[0004] Therefore, it is necessary to provide an automatic feeding device for masterbatch and a feeding control system thereof to solve the above problems. Summary of the invention

[0005] The object of the present invention is to provide an automatic feeding device for masterbatch and a feeding control system thereof, which can evenly feed the masterbatch after screening, reduce the occurrence of blockage, and thus improve production efficiency and production quality, so as to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: an automatic feeding device for masterbatch and a feeding control system thereof, comprising a conveyor and a screening mechanism, the screening mechanism being arranged above the left side of the conveyor, the screening mechanism being used to break up and screen out the agglomerated masterbatch and the main raw material of the product, and the conveyor being used to transport the masterbatch and the main raw material of the product;

[0007] The screening mechanism includes a breaking component and a screening component. The breaking component is arranged above the screening component. The screening component includes a second shell, an electric screen plate and a second drive. The electric screen plate is arranged inside the second shell. The electric screen plate is used to screen large particles or agglomerated masterbatches and main raw materials of products. The second drive is fixed to the second side of the shell. The bottom of the left end of the electric screen plate is fixedly connected with a rotating shaft and a baffle. The rotating shaft is connected to the second shell bearing. The output end of the second drive is fixedly connected to the rotating shaft. A screening outlet is opened on the left side of the second shell. The baffle is located at the screening outlet. A screening channel is fixedly connected to the second side of the shell. The position of the screening channel corresponds to the position of the screening outlet.

[0008] An emptying assembly is provided at the bottom of the left side of the conveyor. The emptying assembly includes an electric door and an emptying channel. The emptying assembly is used to empty the raw materials inside the conveyor.

[0009] A weighing hopper is arranged on the top of the screening mechanism, a valve is arranged on the bottom of the weighing hopper, the valve is fixedly connected to the top of the shell, a recycling box is arranged on the side of the screening mechanism, the number of recycling boxes is consistent with the number of weighing hoppers and the recycled materials correspond, and a weighing chassis is arranged at the bottom of the recycling box;

[0010] The main raw materials and masterbatches can be fed alternately, which is more conducive to improving the uniformity of the main raw materials and masterbatches after mixing. At the same time, the main raw materials and masterbatches removed by screening are classified and weighed, the qualified rates of the main raw materials and masterbatches are calculated, and then the re-addition amount of the main raw materials and masterbatches is calculated, so as to improve production efficiency and production quality.

[0011] According to the above technical solution, the breaking up component includes a shell one, a drive one and three groups of breaking up rods. Shell two is respectively screwed and fixed to shell one and the conveyor. Several breaking up rods are fixedly connected to the breaking up rod. Drive one is fixed to shell one. The output end of drive one is fixedly connected to the middle group of breaking up rods. The breaking up rods are connected to the shell one bearing. Drive one is connected to the other two groups of breaking up rods by pulley transmission, which can break up the added main raw materials and masterbatches of the product for easy screening.

[0012] According to the above technical solution, block 1 is fixedly connected to the right side of the electric sieve plate, and block 2 is fixedly connected to the inner side of shell 2. Block 2 is located below block 1 and has corresponding positions. Block 1 and block 2 can limit the electric sieve plate.

[0013] According to the above technical solution, a discharge channel is provided at the bottom right side of the conveyor, and the discharge channel is fixedly connected to the raw material mixing barrel of the production equipment.

[0014] According to the above technical solution, the electric door is arranged directly below the screening assembly, the emptying channel is arranged on the periphery of the electric door and fixedly connected to the bottom of the conveyor, and the electric door is opened in combination with the reversal of the conveyor motor to realize the emptying of the main raw materials and masterbatches of the products inside the conveyor, thereby reducing the impact on subsequent production.

[0015] According to the above technical solution, a second recovery box is provided at the bottom of the emptying channel;

[0016] Universal wheels are fixedly connected at the bottom of recycling box one and recycling box two, and handles are fixedly connected at the sides of recycling box one and recycling box two. Recycling box two can recycle main raw materials and masterbatches of products that need to be emptied, and recycling box one can recycle main raw materials and masterbatches of products with large particles or agglomerates.

[0017] According to the above technical scheme, the feeding control system is connected to the finished product inspection system signal of the product. The feeding control system includes a collection module, a control module, an analysis module and an alarm module. The collection module is electrically connected to the weighing hopper and the recycling box one. The collection module is used to collect the amount of masterbatch and the main raw materials added and the amount of screening recovery. The control module is electrically connected to the conveyor, drive one, electric sieve plate, drive two valves and electric door. The control module is used to control feeding, screening and emptying. The analysis module is used to compare and analyze the information of the finished product inspection system and the information of the collection module, adjust the amount of masterbatch and the main raw materials added and whether they need to be emptied, and the alarm module is used for alarm prompts.

[0018] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: the present invention, by providing a screening mechanism, can screen the masterbatch and the main raw materials of the product, so as to prevent large particles or agglomerated masterbatch and the main raw materials of the product from entering the production equipment; then combined with the weighing of the recycling box one, the qualified rate of the masterbatch and the main raw materials of the product is calculated, so as to avoid serious product quality problems in the finished product; and then combined with the finished product inspection system, the dominant cause affecting the appearance of bubbles or uneven color in the finished product is determined, and the staff can adjust the production equipment in time, which is conducive to further improving the production efficiency and production quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a side structural cross-sectional schematic diagram of the present invention;

[0022] Figure 3 It is a schematic cross-sectional view of the main structure of the present invention;

[0023] Figure 4 is a schematic top view and cross-sectional view of a screening assembly of the present invention;

[0024] Figure 5 The present invention Figure 3 A schematic diagram of the enlarged structure of the middle A area;

[0025] In the figure: 1. conveyor; 2. screening mechanism;

[0026] 3. Breaking up assembly; 31. Driving one; 32. Breaking up rod;

[0027] 4. Screening assembly; 41. Electric screen plate; 42. Drive 2; 43. Rotating shaft; 44. Baffle; 45. Screening channel;

[0028] 5. Emptying assembly; 51. Electric door; 52. Emptying channel;

[0029] 6. Discharging channel; 7. Weighing hopper; 8. Valve; 9. Recovery box 1; 10. Recovery box 2. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] See also Figure 1-5 The present invention provides a technical solution: an automatic feeding device for masterbatch, comprising a conveyor 1 and a screening mechanism 2, wherein the screening mechanism 2 is arranged above the left side of the conveyor 1, and the screening mechanism 2 is used to break up and screen and remove the agglomerated masterbatch and the main raw material of the product, and the conveyor 1 is used to transport the masterbatch and the main raw material of the product;

[0032] See also Figure 1-Figure 3 The screening mechanism 2 includes a breaking component 3 and a screening component 4. The breaking component 3 is arranged above the screening component 4. The breaking component 3 includes a shell 1, a drive 1 31 and three groups of breaking rods 32. A number of breaking rods are fixedly connected to the breaking rods 32. The drive 1 31 is fixed on the shell 1. The output end of the drive 1 31 is fixedly connected to the middle group of breaking rods 32. The breaking rods 32 are connected to the shell 1 bearing. The drive 1 31 is connected to the other two groups of breaking rods 32 by a pulley transmission. The drive 1 31 is used to drive the three groups of breaking rods 32 to rotate, so as to break up the incoming masterbatch and the main raw materials of the product.

[0033] In actual operation, the drive 31 preferably comprises a motor and a reducer, and the drive 31 is started to drive the middle breaking rod 32 to rotate, and then the breaking rods 32 on both sides are driven to rotate through the pulley transmission, so as to break up the masterbatch and the main raw materials of the product to avoid agglomeration.

[0034] See also Figure 1-Figure 5The screening component 4 includes a housing 2, an electric sieve plate 41 and a drive 2 42. The housing 2 is respectively screwed and fixed to the housing 1 and the conveyor 1. The electric sieve plate 41 is arranged inside the housing 2. The electric sieve plate 41 is used to screen large particles or agglomerated masterbatches and main raw materials of products. The drive 2 42 is fixed to the side of the housing 2. The bottom of the left end of the electric sieve plate 41 is fixedly connected with a rotating shaft 43 and a baffle 44. The rotating shaft 43 is connected to the bearing of the housing 2. The output end of the drive 2 42 is fixedly connected to the rotating shaft 43. The left side of the housing 2 is provided with a screening output The baffle 44 is located at the screening outlet, a screening channel 45 is fixedly connected to the side of the second shell, and the position of the screening channel 45 corresponds to the position of the screening outlet. The drive 2 42 is used to drive the electric sieve plate 41 to rotate, and the screened large particles or agglomerated masterbatch and main raw materials of the product are discharged through the screening channel 45. A stopper 1 is fixedly connected to the right side of the electric sieve plate 41, and a stopper 2 is fixedly connected to the inner side of the second shell. The stopper 2 is located below the stopper 1 and has a corresponding position. The stopper 2 is used to limit the position of the electric sieve plate 41.

[0035] In actual operation, the masterbatch or main raw material of the product dispersed by the dispersing component 3 falls onto the electric sieve plate 41, and the electric sieve plate 41 starts to screen large particles or agglomerated masterbatch and main raw materials of the product. After the screening is completed, the drive 2 42 starts to rotate counterclockwise, driving the electric sieve plate 41 to rotate counterclockwise, and the large particles or agglomerated masterbatch and main raw materials of the product on the electric sieve plate 41 are discharged through the screening channel 45.

[0036] See also Figure 1-Figure 3 An emptying component 5 is provided at the bottom of the left side of the conveyor 1, and a discharge channel 6 is provided at the bottom of the right side of the conveyor 1. The conveyor 1 is a screw conveyor driven by a motor. The discharge channel 6 is fixedly connected to the raw material mixing barrel of the raw material production equipment. The emptying component 5 is used to empty the raw materials inside the conveyor 1.

[0037] The emptying assembly 5 includes an electric door 51 and an emptying channel 52 . The electric door 51 is arranged directly below the screening assembly 4 , and the emptying channel 52 is arranged at the periphery of the electric door 51 and is fixedly connected to the bottom of the conveyor 1 .

[0038] In actual operation, the electric door 51 is preferably driven by a motor to open and close. When the color or batch of the masterbatch needs to be changed, the electric door 51 is opened, and the small particles of the masterbatch can be discharged from the emptying channel 52. The large particles or agglomerated masterbatch are started by the drive 2 42 to drive the electric sieve plate 41 to rotate, so that the large particles or agglomerated masterbatch are discharged from the screening channel 45.

[0039] See also Figure 1A weighing hopper 7 is arranged on the top of the screening mechanism 2, a valve 8 is arranged on the bottom of the weighing hopper 7, the valve 8 is fixedly connected to the top of the shell, a recovery box 9 is arranged on the side of the screening mechanism 2, the number of recovery boxes 9 is consistent with the number of weighing hoppers 7 and the recovered materials correspond, and a weighing chassis is arranged at the bottom of the recovery box 9.

[0040] In actual operation, at least two sets of weighing hoppers 7 are provided according to the color of the product to be produced, which are used to place the masterbatch and the main raw material of the product respectively. At this time, two sets of recovery boxes 9 are used to recover the masterbatch with large particles or agglomerates and the main raw material of the product respectively.

[0041] See also Figure 1 and Figure 2 A recovery box 10 is provided at the bottom of the emptying channel 52. The recovery box 10 is used to recover small-particle masterbatches and main raw materials of products when emptying is required.

[0042] Universal wheels are fixedly connected to the bottom of recycling box 1 9 and recycling box 2 10, and handles are fixedly connected to the sides of recycling box 1 9 and recycling box 2 10, which are convenient for staff to push recycling box 1 9 and recycling box 2 10. A horizontal moving device that drives recycling box 1 9 to move is provided at the bottom of recycling box 1 9, which can be a conveying platform.

[0043] The automatic feeding device for masterbatch also includes a feeding control system. The feeding control system signal is connected to the finished product inspection system. The finished product inspection system is used to inspect the quality of the finished product. The inspection content at least includes whether there are bubbles on the surface of the finished product and the color uniformity. The feeding control system includes a collection module, a control module, an analysis module and an alarm module. The collection module is electrically connected to the weighing hopper 7 and the recycling box 9. The collection module is used to collect the amount of masterbatch and the main raw materials added and the amount of screening recovery. The control module is electrically connected to the conveyor 1, the drive 31, the electric sieve plate 41, the drive 42 valve 8 and the electric door 51, and is used to control feeding, screening and emptying. The analysis module is used to compare and analyze the information of the finished product inspection system and the information collected by the collection module, adjust the amount of masterbatch and the main raw materials added to the product and whether they need to be emptied, and the alarm module is used for alarm prompts.

[0044] Control method of feeding control system:

[0045] Step 1: Set the masterbatch, total addition amount and single addition amount of the main raw materials of the product respectively, and the control module controls the addition in turn.

[0046] Specifically, the total amount of main raw materials added is recorded as N, the single amount of main raw materials added is recorded as N', the total amount of masterbatch added is recorded as M, and the single amount of masterbatch added is recorded as M'.

[0047] S1: The control module controls the addition of main raw materials of the product.

[0048] Specifically, the control module first controls the valve 8 at the bottom of the weighing hopper 7 where the main raw material of the product is located to open, and controls the feeding. When the single addition amount reaches the set value, the valve 8 is closed; while the valve 8 is opened, the control module controls the drive 1 31 and the electric sieve plate 41 to start, and the drive 1 31 starts to drive the breaking rod 32 to rotate, so as to break up the incoming main raw material of the product, and the electric sieve plate 41 screens the broken main raw material of the product. After screening for a certain period of time, the control module controls the drive 2 42 to start, and drives the electric sieve plate 41 to rotate, and discharges the large particles or agglomerated main raw materials of the product on the electric sieve plate 41 through the screening channel 45 to the corresponding recovery box 1 9. The collection module collects the weighing weight of the main raw materials of the product removed by a single screening by the weighing chassis at the bottom of the recycling box 1 9, and the weight of the removed main raw materials of the product is recorded as n. i , i is The result is rounded up.

[0049] S2: The control module controls the addition of masterbatch.

[0050] Specifically, the method of adding masterbatch and screening out large particles or agglomerated masterbatch in this step is consistent with the operation method in S1, but in this step, the collection module collects the weight of the masterbatch removed by a single screening at the weighing chassis at the bottom of the corresponding masterbatch recovery box-9, and the weight of the removed masterbatch is recorded as m k , k is The result is rounded up.

[0051] It should be noted that each time the main raw materials and masterbatches of the products are added in turn, the transmission platform at the bottom of the recycling box 9 will drive the recycling box 9 to adjust its position, thereby ensuring that the recycling box 9 corresponds to the main raw materials or masterbatches of the products added.

[0052] S3: The control module controls the addition of the main raw materials and masterbatches of the product in turn until the total addition amount is completed, and accumulates the rejection amount of the main raw materials and masterbatches of the product respectively.

[0053] Specifically, the total amount of main raw materials removed from the product is recorded as N 总 The total amount of masterbatch removed is recorded as M 总 ;

[0054] N 总 is the sum of the weight of the main raw materials removed from S1, that is, N 总 =n 1 +n 2 +⋯…+n i ;

[0055] M 总 is the sum of the weight of the main raw materials removed from S2, that is, M 总 =m 1 +m 2 +⋯…+mk .

[0056] Step 2: The analysis module calculates the qualified rate and the additional amount of the main raw material and masterbatch of the product respectively, and controls the additional addition.

[0057] Specifically, the analysis module is provided with the rejection amount thresholds of the main raw material of the product and the masterbatch, the rejection amount threshold of the main raw material of the product is A, and the rejection amount threshold of the masterbatch is B.

[0058] In N 总 ≥A or M 总 When ≥B, the particles of the main raw material or masterbatch of the product are large or agglomerated. To avoid producing products with serious quality abnormalities, the control module controls the electric door 51 to open and the motor on the conveyor 1 to reverse for emptying. At the same time, it feeds back to the alarm module for an alarm prompt, and the staff controls the discharge of the main raw materials and masterbatches mixed in the raw material mixing barrel.

[0059] Only in N 总 <A and M 总 When <B, the main raw material or masterbatch particles of the product are normal, and the main raw material and masterbatch can be added to carry out subsequent production. 总 =0,M 总 =0 is the ideal state.

[0060] The analysis module calculates the qualified rate and supplementary amount of the main raw materials of the product. The qualified rate of the main raw materials of the product is The total amount of main raw materials added is recorded as N 补 , N 补 = ;

[0061] The analysis module calculates the qualified rate and addition amount of masterbatch. The qualified rate of masterbatch is , the amount of masterbatch added is recorded as , M 补 = .

[0062] Then repeat steps 1 and 2 to complete the addition of the main raw materials and masterbatch of the product. Repeat only once. The rejection threshold of the main raw materials of the product in the repeated steps is , the masterbatch rejection threshold is If the actual amount of the main raw material or masterbatch of the product after addition does not reach the set masterbatch and total amount of the main raw material of the product, it will be fed back to the alarm module to issue an alarm prompt, and the staff will manually adjust the amount of the main raw material or masterbatch of the product.

[0063] Step 3: Analyze and determine the reasons that affect product quality in conjunction with the finished product inspection system.

[0064] Specifically, situation 1: the finished product inspection system detects bubbles on the surface of the finished product. 总 ≥0.5A, it is caused by high humidity of the main raw material of the product; 总 ≥0.5B, caused by high humidity of masterbatch, which is fed back to the alarm module, and the staff adjusts the parameters of the production equipment to extend the mixing temperature of the mixing container to evaporate the water vapor of the main raw materials and masterbatch of the product, avoiding the presence of water vapor in the mixed raw materials, resulting in bubbles on the surface of the finished product; in N 总 <0.5A and M 总 When it is less than 0.5B, it indicates that the production equipment is abnormal and the feedback is sent to the alarm module. The staff will check the production equipment to avoid abnormal production equipment or water accumulation inside which may cause bubbles on the surface of the finished product and reduce the qualified rate of the finished product.

[0065] Case 2: The finished product inspection system detects uneven color on the surface of the finished product. 总 ≥0.5A, it is caused by the large particles of the main raw material of the product; 总 When the value is ≥0.5, it is caused by the large particles of the masterbatch, which is fed back to the alarm module. The staff will adjust the parameters of the production equipment and extend the mixing time of the mixing container to fully mix the main raw materials and the masterbatch to avoid uneven color on the surface of the finished product. 总 <0.5A and M 总 When the value is less than 0.5B, it is an equipment abnormality, which is fed back to the alarm module. The staff will check the production equipment to avoid uneven mixing of the main raw materials and masterbatches caused by the abnormality of the production equipment, resulting in uneven color on the surface of the finished product and reducing the qualified rate of the finished product;

[0066] Case 3: The finished product inspection system does not detect bubbles and uneven color, and the finished product is normal. 总 ≥0.5A or M 总 ≥0.5 can also be overcome during the mixing and heating process of the main raw materials and masterbatch of the product by the production equipment, and the production equipment is operating normally at this time.

[0067] It should be noted that situation 1 and situation 2 can exist at the same time, and parameters can be adjusted at the same time.

[0068] Through the above steps, the masterbatch and the main raw materials of the product can be screened to prevent large particles or agglomerated masterbatch and the main raw materials of the product from entering the production equipment, reduce the occurrence of blockage, avoid affecting the production efficiency of the product and the final quality of the product, and at the same time facilitate timely emptying when the color or batch of the masterbatch needs to be changed due to production abnormalities or changes in production plans, so as to avoid affecting the quality of subsequent products, thereby further helping to improve the production efficiency and product quality of the product.

[0069] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0070] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A feeding control system for an automatic feeding device for masterbatch, the automatic feeding device comprising a conveyor (1) and a screening mechanism (2), the screening mechanism (2) being arranged above the left side of the conveyor (1), the screening mechanism (2) being used to break up and screen out agglomerated masterbatch and main raw materials of products, and the conveyor (1) being used to convey the masterbatch and main raw materials of products; The screening mechanism (2) comprises a breaking component (3) and a screening component (4); the breaking component (3) is arranged above the screening component (4); the breaking component (3) comprises a housing 1, a drive 1 (31) and three groups of breaking rods (32); the screening component (4) comprises a housing 2, an electric sieve plate (41) and a drive 2 (42); the electric sieve plate (41) is arranged inside the housing 2; the electric sieve plate (41) is used to screen large particles or agglomerated masterbatches and main raw materials of products; The second drive (42) is fixed to the second side of the housing, the bottom of the left end of the electric sieve plate (41) is fixedly connected to a rotating shaft (43) and a baffle (44), the rotating shaft (43) is connected to the second bearing of the housing, the output end of the second drive (42) is fixedly connected to the rotating shaft (43), the left side of the housing is provided with a screening outlet, the baffle (44) is located at the screening outlet, and the second side of the housing is fixedly connected to a screening channel (45), the position of the screening channel (45) corresponds to the position of the screening outlet; An emptying assembly (5) is provided at the bottom of the left side of the conveyor (1), the emptying assembly (5) comprising an electric door (51) and an emptying channel (52), and the emptying assembly (5) is used to empty the raw materials inside the conveyor (1); A weighing hopper (7) is arranged at the top of the screening mechanism (2), a valve (8) is arranged at the bottom of the weighing hopper (7), and the valve (8) is fixedly connected to the top of the shell body; a recovery box (9) is arranged on the side of the screening mechanism (2); the number of the recovery boxes (9) is consistent with the number of the weighing hoppers (7) and corresponds to the recovered materials; a weighing chassis is arranged at the bottom of the recovery box (9); Features: The feeding control system is connected to the finished product inspection system by signal. The finished product inspection system is used to inspect the quality of the finished product. The inspection content at least includes whether there are bubbles on the surface of the finished product and the color uniformity. The feeding control system includes an acquisition module, a control module, an analysis module, and an alarm module: The collection module is used to collect the added amount of masterbatch and main raw materials of the product and the recovered amount after screening, and the collection module is electrically connected to the weighing hopper (7) and the recovery box (9); The control module is used to control feeding, screening and emptying, and the control module is electrically connected to the conveyor (1), drive 1 (31), the electric sieve plate (41), drive 2 (42), the valve (8) and the electric door (51); The analysis module is used to compare and analyze the information collected by the finished product inspection system and the information collected by the collection module, and adjust the amount of masterbatch and main raw materials added and whether they need to be emptied; The alarm module is used for alarm prompting; The working process of the feeding control system is as follows: Step 1: Set the masterbatch, total addition amount and single addition amount of the main raw materials of the product respectively, and control the addition in turn by the control module; The specific operation steps are as follows: the total amount of the main raw materials added is recorded as N, the single amount of the main raw materials added is recorded as N', the total amount of masterbatch added is recorded as M, the single amount of masterbatch added is recorded as M', the collection module collects the weight of the main raw materials of the product that are removed by the single screening on the weighing bottom plate at the bottom of the collection box (9), and the weight of the main raw materials removed is recorded as n i , i is The result is rounded up, and the collection module collects the weight of the masterbatch removed from the single screening at the weighing bottom plate at the bottom of the corresponding masterbatch recovery box (9). The weight of the removed masterbatch is recorded as m k , k is The result is rounded up, and the rejection amount of the main raw material and masterbatch of the product is calculated and accumulated respectively. The total rejection amount of the main raw material of the product is recorded as N 总 The total amount of masterbatch removed is recorded as M 总 ; Step 2: The analysis module calculates the qualified rate and the amount of addition of the main raw material and masterbatch of the product, and controls the addition; The specific operation steps are as follows: the analysis module is provided with the rejection thresholds of the main raw materials and the masterbatch, the rejection threshold of the main raw materials is A, and the rejection threshold of the masterbatch is B; In N 总 ≥A or M 总 ≥B, the particles of the main raw material or masterbatch of the product are large or agglomerated. To avoid producing products with serious quality abnormalities, the control module controls the electric door (51) to open and controls the motor on the conveyor (1) to reverse for emptying, and at the same time feeds back to the alarm module for alarm prompting, and the staff controls the main raw material and masterbatch of the product mixed in the raw material mixing barrel to be discharged; In N 总 <A and M 总 When <B, the main raw materials and masterbatch particles of the product are normal, and the main raw materials and masterbatch can be added to carry out subsequent production. 总 =0,M 总 =0 is the ideal state; Step 3: Analyze and determine the reasons that affect product quality in conjunction with the finished product inspection system.

2. The feeding control system of the automatic feeding device for masterbatch according to claim 1, characterized in that: The shell 2 is respectively screwed and fixed to the shell 1 and the conveyor (1); a plurality of breaking rods are fixedly connected to the breaking rod (32); the drive 1 (31) is fixed to the shell 1; the output end of the drive 1 (31) is fixedly connected to a middle group of breaking rods (32); the breaking rods (32) are connected to the shell 1 bearing; the drive 1 (31) is connected to the other two groups of breaking rods (32) by a pulley transmission.

3. The feeding control system of the automatic feeding device for masterbatch according to claim 1, characterized in that: The right side of the electric sieve plate (41) is fixedly connected to a stopper 1, and the inner side of the housing 2 is fixedly connected to a stopper 2, wherein the stopper 2 is located below the stopper 1 and has a corresponding position.

4. The feeding control system of the automatic feeding device for masterbatch according to claim 3 is characterized in that: A discharge channel (6) is provided at the bottom right side of the conveyor (1), and the discharge channel (6) is fixedly connected to a raw material mixing barrel of the production equipment.

5. The feeding control system of the automatic feeding device for masterbatch according to claim 4 is characterized in that: The electric door (51) is arranged directly below the screening assembly (4), and the emptying channel (52) is arranged at the periphery of the electric door (51) and is fixedly connected to the bottom of the conveyor (1).

6. The feeding control system of the automatic feeding device for masterbatch according to claim 5, characterized in that: A second recovery box (10) is provided at the bottom of the emptying channel (52); The bottom of the recycling box 1 (9) and the recycling box 2 (10) are fixedly connected with universal wheels, and the sides of the recycling box 1 (9) and the recycling box 2 (10) are fixedly connected with handles.

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