A masterbatch sampling and detection device

Abstract

The present invention belongs to the technical field of masterbatch sampling and detection, and in particular, relates to a masterbatch sampling and detection device, comprising a box, a lower side wall of the box is fixedly connected with a placement frame, a raw material barrel is placed in the placement frame, a left inner wall of the placement frame is fixedly connected with a PLC controller, and an upper side wall of the box is fixedly connected with a longitudinally placed first linear motor, and the output end of the first linear motor is located in the box. The present invention can keep the detection device and the raw material barrel in a sealed state at all times when sampling and detecting the masterbatch, and can quickly seal the raw material barrel and the detection device after each sample extraction, so as to avoid the humid air in the air causing an oxidation reaction on the surface of the masterbatch to change its color performance, and the adhesion of dust will interfere with the observation and measurement of the color, causing the problem of deviation in the detection result.

Description

Technical Field

[0001] The invention belongs to the technical field of masterbatch sampling and detection, and in particular relates to a masterbatch sampling and detection device. Background Art

[0002] Masterbatch is a new type of colorant specially used for polymer materials, also known as color concentrate. Masterbatch is usually made of pigments or dyes, carriers, additives and other ingredients mixed in a certain proportion. After the masterbatch is produced, in order to verify whether each batch of masterbatch meets the established standards and specifications in terms of color, performance, etc., it is necessary to sample and test the produced masterbatch. For example, in a masterbatch sampling and testing device proposed in patent publication number CN110715828A, when the sampler is inserted into the deep masterbatch through the sampling rod, the sampler is driven to rotate, so that the masterbatch is introduced into the sampling cone connected to the bottom of the sampling cover through the push plate in the rotating state outside the sampling cover, so as to realize the sampling and collection operation of deep masterbatch.

[0003] When using the existing detection device, it is necessary to open the masterbatch storage cylinder, insert the sampling device into the cylinder to take out the material, and then place the taken out masterbatch in the collection device. Since the storage cylinder is always in an open state during multiple sampling processes, if the air humidity or dust in the storage environment is high, moisture and dust are easy to enter the storage cylinder and adhere to the surface of the extracted sample. Moisture will cause oxidation reaction on the surface of the masterbatch and change its color performance; the adhesion of dust will interfere with the observation and measurement of color, causing deviation in the detection result;

[0004] In addition, when testing the melt flow rate of masterbatch samples, multiple samples need to be tested to ensure accurate test results. After each sample is tested, in order to avoid residual materials from mixing into the next test sample and affecting the measurement results, the residual materials inside the testing device must be cleaned before the next material can be tested. This will affect the working efficiency of the testing device. Using multiple testing devices to simultaneously test the melt flow rate of the masterbatch not only increases the testing cost, but also takes up a large space.

[0005] Therefore, a masterbatch sampling and detection device is proposed to solve the above problems. Summary of the invention

[0006] The purpose of the present invention is to provide a masterbatch sampling and detection device in view of the above problems.

[0007] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a masterbatch sampling and detection device, comprising a box body, a placement frame is fixedly connected to the lower side wall of the box body, a raw material barrel is placed in the placement frame, a PLC controller is fixedly connected to the left inner wall of the placement frame, a first linear motor placed longitudinally is fixedly connected to the upper side wall of the box body, the output end of the first linear motor is located in the box body, and is fixedly connected to a movable plate, the upper side wall of the box body is provided with a sliding port that slides with the output end of the first linear motor, the lower side wall of the movable plate is fixedly connected with a second linear motor arranged vertically, the output end of the second linear motor is fixedly connected with a third linear motor arranged horizontally, the output end of the third linear motor is fixedly connected with a sampling assembly, the lower side wall of the box body is provided with a sampling port that matches the sampling assembly, a sealing assembly is provided below the sampling port, three detection assemblies are connected to the right side wall of the box body, the melt flow rate of the masterbatch is detected by the detection assembly, a pressure assembly is provided above the detection assembly, and pressure is applied to the detection assembly by the pressure assembly, and a colorimeter is fixedly connected to the right inner wall of the box body.

[0008] Preferably, the sampling assembly includes a sampling rod and a sampling head, the output end of the third linear motor is fixedly connected to the upper end of the sampling rod through a bracket, the sampling head and the lower end of the sampling rod are fixedly connected, a transverse groove is provided on the right side wall of the sampling head, a micro-electric push rod is fixedly connected to the left side wall of the transverse groove, a guide cover arranged outside the micro-electric push rod is fixedly connected to the side wall of the sampling head, the output end of the micro-electric push rod is fixedly connected to a support plate, the right side wall of the support plate is fixedly connected to a micro-motor, the output end of the micro-motor is fixedly connected to a collecting head, a sampling groove is provided on the upper side wall of the collecting head, and the right end of the collecting head and the lower end of the sampling head are both pointed structures.

[0009] Preferably, the sealing assembly includes a rubber plate and a sliding box, the rubber plate is located below the sampling port, the sliding box and the lower side wall of the rubber plate are fixedly connected, the left inner wall of the placement frame is fixedly connected with a driving electric push rod, the output end of the driving electric push rod is fixedly connected to the right side wall of the sliding box, the upper side wall of the raw material barrel is connected to a square tube, the side wall of the square tube is inserted with a rubber seat, the right side of the rubber seat extends out of the square tube and is fixedly connected with a vertical plate, two springs are fixedly connected between the vertical plate and the square tube, the right side wall of the vertical plate is fixedly connected with an insert cylinder, the upper inner wall of the sliding box is fixedly connected with a sliding block through a spring, the left side wall of the sliding block is fixedly connected with a pull rod, the lower end of the pull rod extends out of the sliding box and is inserted in the insert cylinder, the lower side wall of the sliding block is fixedly connected with a permanent magnet block, and the lower inner wall of the sliding box is fixedly connected with an electromagnetic block matching the permanent magnet block.

[0010] Preferably, the detection assembly includes a detection cylinder and a feed pipe, the detection cylinder is connected to the right side wall of the box through a bracket, the feed pipe is inserted in the right side wall of the box, the right end of the feed pipe extends out of the box and is connected to the side wall of the detection cylinder, the tube wall of the feed pipe located in the box is connected to a feed hopper, the outer wall of the detection cylinder is fixedly provided with a jacket, the inner wall of the jacket is fixedly connected with a heating wire, the lower end of the detection cylinder is fixedly connected with a threaded ring, the inner thread of the threaded ring is connected with a die, the right side wall of the placement frame is fixedly connected with three supporting cylinders located below the detection cylinder, and a weighing cylinder is placed in the supporting cylinder.

[0011] Preferably, the pressure assembly includes a pressure box and a partition, the pressure box is fixedly connected to the right side wall of the box body, the partition is fixedly connected to the inner wall of the pressure box, the partition and the pressure box are rotatably connected with the same threaded rod, the upper side wall of the partition is fixedly connected to a servo motor, the output end of the servo motor is fixedly connected to the upper end of the threaded rod, the rod wall of the threaded rod is threadedly sleeved with a threaded barrel, the left side wall of the threaded barrel is fixedly connected to a pressure rod, the lower end of the pressure rod is fixedly connected to a pressure plate, and the lower side wall of the pressure plate is fixedly connected to three elastic The three elastic cylinders are each inserted with a round rod, the lower ends of the three round rods extend out of the pressure cylinder and are fixedly connected with a piston column that matches the detection cylinder, the upper end of the round rod is fixedly connected with a round plate, the same spring and a telescopic airbag are fixedly connected between the round plate and the elastic cylinder, the upper side wall of the round plate is fixedly connected with a conductive block, the conductive block is electrically connected to an external power supply, the left side wall of the elastic cylinder is inlaid with a conductive plate, the conductive plate is electrically connected to the forward circuit of the servo motor, and the upper side wall of the pressure plate is connected with a timing assembly.

[0012] Preferably, the timing assembly includes a support box and a timing cylinder, the support box and the timing cylinder are both fixedly connected to the upper side wall of the pressure plate, the telescopic airbag and the support box are fixedly connected by a same short tube, and the tube wall of the short tube is connected to a one-way tube, a one-way valve is provided in the one-way tube, the support box and the timing cylinder are fixedly connected by a same transverse tube, a first control valve is provided in the transverse tube, a retaining ring is fixedly connected to the inner wall of the timing cylinder, a piston block is placed on the upper side wall of the retaining ring, the same spring is fixedly connected between the piston block and the timing cylinder, the left side wall of the timing cylinder is connected to a microporous tube, a second control valve is provided in the microporous tube, the left side wall of the elastic cylinder is fixedly connected to a trigger button, the trigger button is electrically connected to the second control valve through a PLC controller, and the upper side wall of the piston block is connected to the trigger assembly.

[0013] Preferably, the trigger assembly includes a fixed frame and a metal wheel, the fixed frame is fixedly connected to the upper side wall of the piston block, the inner wall of the fixed frame is rotatably connected to a connecting shaft, the metal wheel fixed sleeve is arranged outside the connecting shaft, the metal wheel is electrically connected to an external power supply, the side wall fixed sleeve of the metal wheel is provided with an insulating pad, the rod wall at the front end of the connecting shaft is fixedly connected to a rotating rod, the front side wall of the fixed frame is fixedly connected to two baffle rods, and the inner wall of the timing cylinder is inlaid with a trigger plate.

[0014] Preferably, three display screens are fixedly connected to the right side wall of the pressure box, and the colorimeter and three weighing cylinders are electrically connected to the display screens via a PLC controller.

[0015] Compared with the existing technology, the advantages of a masterbatch sampling and detection device are:

[0016] 1. Through the set sampling component, when sampling and testing the masterbatch, samples at different depths in the raw material barrel can be extracted for testing to understand whether the composition, color, performance, etc. of the masterbatch are evenly distributed in the vertical direction, and to confirm whether the quality of the whole batch of masterbatch is stable and consistent at different depths. This helps to judge the reliability of the production process and the repeatability of product quality.

[0017] 2. By setting up the sealing component, the detection equipment and the raw material cylinder can always be kept in a sealed state when sampling and testing the masterbatch, and the raw material cylinder and the detection equipment can be quickly sealed after each sample extraction to prevent the humid air in the air from causing oxidation reaction on the surface of the masterbatch and changing its color performance. The adhesion of dust will interfere with the observation and measurement of the color and cause the problem of deviation in the test results.

[0018] 3. By setting up the pressure component and the detection component, the melt flow rate of the three-color masterbatch can be tested at the same time when the masterbatch is sampled and tested, which saves the time of cleaning the residues of the device, thereby improving the detection efficiency of the detection device and reducing the space occupied by the detection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a stereoscopic diagram of a masterbatch sampling and detection device provided by the present invention;

[0020] Figure 2 It is a front cross-sectional view of a masterbatch sampling and detection device provided by the present invention;

[0021] Figure 3 It is a structural schematic diagram of a sampling component in a masterbatch sampling and detection device provided by the present invention;

[0022] Figure 4 It is a three-dimensional cross-sectional view of a flow guide cover in a masterbatch sampling and detection device provided by the present invention;

[0023] Figure 5 It is a structural schematic diagram of a sealing component in a masterbatch sampling and detection device provided by the present invention;

[0024] Figure 6 It is a structural schematic diagram of a detection component in a masterbatch sampling and detection device provided by the present invention;

[0025] Figure 7 It is a structural schematic diagram of a pressure component in a masterbatch sampling and detection device provided by the present invention;

[0026] Figure 8 It is a structural schematic diagram of a timing component in a masterbatch sampling and detection device provided by the present invention;

[0027] Fig. 9 It is a schematic diagram of the positional relationship of multiple elastic cylinders in a masterbatch sampling and detection device provided by the present invention;

[0028] Fig.10 The present invention provides a schematic structural diagram of a trigger component in a masterbatch sampling and detection device.

[0029] In the figure: 1 box, 2 placement frame, 3 raw material cylinder, 4 PLC controller, 5 first linear motor, 6 moving plate, 7 second linear motor, 8 third linear motor, 9 sampling port, 10 colorimeter, 11 sampling assembly, 111 sampling rod, 112 sampling head, 12 horizontal groove, 13 micro electric push rod, 14 support plate, 15 micro motor, 16 collecting head, 17 sampling groove, 18 sealing assembly, 181 rubber plate, 182 sliding box, 19 driving electric push rod, 20 square tube, 21 rubber seat, 22 vertical plate, 23 insert cylinder, 24 sliding block, 25 pull rod, 26 permanent magnet block, 27 electromagnetic block, 28 detection assembly, 281 detection cylinder, 282 feeding pipe, 29 feeding hopper, 30 jacket, 31 heating wire, 32 threaded ring, 33 die, 34 bearing cylinder , 35 weighing cylinder, 36 pressure assembly, 361 pressure box, 362 partition, 37 threaded rod, 38 servo motor, 39 threaded cylinder, 40 pressure rod, 41 pressure plate, 42 elastic cylinder, 43 round rod, 44 piston column, 45 round plate, 46 telescopic airbag, 47 conductive block, 48 conductive plate, 49 timing assembly, 491 support box, 492 timing cylinder, 50 short tube, 51 cross tube, 52 first control valve, 53 retaining ring, 54 piston block, 55 microporous tube, 56 second control valve, 57 trigger button, 58 trigger assembly, 581 fixing frame, 582 metal wheel, 59 connecting shaft, 60 insulating pad, 61 rotating rod, 62 retaining rod, 63 trigger plate, 64 display screen, 65 deflector, 66 one-way tube. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0031] like Figure 1-Figure 10 As shown, a masterbatch sampling and detection device includes a box body 1, a placing frame 2 is fixedly connected to the lower side wall of the box body 1, a raw material barrel 3 is placed in the placing frame 2, a PLC controller 4 is fixedly connected to the left inner wall of the placing frame 2, a first linear motor 5 placed vertically is fixedly connected to the upper side wall of the box body 1, the output end of the first linear motor 5 is located in the box body 1, and is fixedly connected to a moving plate 6, the upper side wall of the box body 1 is provided with a sliding opening that slides with the output end of the first linear motor 5, the lower side wall of the moving plate 6 is fixedly connected to a second linear motor 7 arranged vertically, and the second linear motor The output end of 7 is fixedly connected to a transversely arranged third linear motor 8, and the output end of the third linear motor 8 is fixedly connected to a sampling component 11. A sampling port 9 matching the sampling component 11 is provided on the lower side wall of the box body 1, and a sealing component 18 is provided below the sampling port 9. Three detection components 28 are connected to the right side wall of the box body 1, and the melt flow rate of the masterbatch is detected by the detection components 28. A pressure component 36 is provided above the detection component 28, and pressure is applied to the detection component 28 by the pressure component 36. A colorimeter 10 is fixedly connected to the right inner wall of the box body 1.

[0032] The sampling assembly 11 includes a sampling rod 111 and a sampling head 112. The output end of the third linear motor 8 is fixedly connected to the upper end of the sampling rod 111 through a bracket. The sampling head 112 is fixedly connected to the lower end of the sampling rod 111. A transverse groove 12 is provided on the right side wall of the sampling head 112. A micro electric push rod 13 is fixedly connected to the left side wall of the transverse groove 12. A flow guide cover 65 is fixedly connected to the side wall of the sampling head 112. The output end of the micro electric push rod 13 is fixedly connected to a support plate 14. The right side wall of the support plate 14 is fixedly connected to the A micro motor 15 is connected, and a collecting head 16 is fixedly connected to the output end of the micro motor 15. A sampling slot 17 is provided on the upper side wall of the collecting head 16. The right end of the collecting head 16 and the lower end of the sampling head 112 are both pointed structures. When sampling and testing the masterbatch, samples at different depths in the raw material barrel 3 can be extracted for testing to understand whether the composition, color, performance, etc. of the masterbatch in the vertical direction are evenly distributed, and to confirm whether the quality of the entire batch of masterbatch at different depths is stable and consistent, which is helpful to judge the reliability of the production process and the repeatability of product quality.

[0033] The sealing assembly 18 includes a rubber plate 181 and a sliding box 182. The rubber plate 181 is located below the sampling port 9. The sliding box 182 is fixedly connected to the lower side wall of the rubber plate 181. The left inner wall of the placement frame 2 is fixedly connected to a driving electric push rod 19. The output end of the driving electric push rod 19 is fixedly connected to the right side wall of the sliding box 182. The upper side wall of the raw material barrel 3 is connected to a square tube 20. The side wall of the square tube 20 is plugged with a rubber seat 21. The right side of the rubber seat 21 extends out of the square tube 20 and is fixedly connected to a vertical plate 22. Two springs are fixedly connected between the vertical plate 22 and the square tube 20. The right side wall of the vertical plate 22 is fixedly connected to an insert tube 23. The upper inner wall of the sliding box 182 is fixedly connected to a sliding block through a spring. 24. The left side wall of the sliding block 24 is fixedly connected with a pull rod 25, the lower end of the pull rod 25 extends out of the sliding box 182 and is inserted into the insert tube 23, the lower side wall of the sliding block 24 is fixedly connected with a permanent magnet block 26, and the lower inner wall of the sliding box 182 is fixedly connected with an electromagnetic block 27 that matches the permanent magnet block 26. When sampling and testing the masterbatch, the detection equipment and the raw material tube 3 can always be kept in a sealed state, and after each sample extraction, the raw material tube 3 and the detection equipment can be quickly sealed to prevent the humid air in the air from causing an oxidation reaction on the surface of the masterbatch and changing its color performance, and the adhesion of dust will interfere with the observation and measurement of the color, causing the problem of deviation in the detection result.

[0034] The detection assembly 28 includes a detection cylinder 281 and a feed pipe 282. The detection cylinder 281 is connected to the right side wall of the box body 1 through a bracket. The feed pipe 282 is plugged into the right side wall of the box body 1. The right end of the feed pipe 282 extends out of the box body 1 and is connected to the side wall of the detection cylinder 281. The tube wall of the feed pipe 282 located in the box body 1 is connected to the feed hopper 29. The outer wall of the detection cylinder 281 is fixedly sleeved with a jacket 30. The inner wall of the jacket 30 is fixedly connected to a heating wire 31. The lower end of the detection cylinder 281 is fixedly connected to a threaded ring 32. The inner thread of the threaded ring 32 is connected to the heating wire 31. There is a die 33, the right side wall of the placement frame 2 is fixedly connected with three bearing cylinders 34 located below the detection cylinder 281, a weighing cylinder 35 is placed in the bearing cylinder 34, and a pressure assembly 36 includes a pressure box 361 and a partition 362, the pressure box 361 is fixedly connected to the right side wall of the box body 1, the partition 362 is fixedly connected to the inner wall of the pressure box 361, the partition 362 and the pressure box 361 are rotatably connected with the same threaded rod 37, the upper side wall of the partition 362 is fixedly connected with a servo motor 38, the output end of the servo motor 38 and the upper side wall of the threaded rod 37 The end is fixedly connected, the rod wall of the threaded rod 37 is threadedly sleeved with a threaded cylinder 39, the left side wall of the threaded cylinder 39 is fixedly connected with a pressure rod 40, the lower end of the pressure rod 40 is fixedly connected with a pressure plate 41, the lower side wall of the pressure plate 41 is fixedly connected with three elastic cylinders 42, the three elastic cylinders 42 are all inserted with round rods 43, the lower ends of the three round rods 43 are all extended out of the pressure cylinder, and are fixedly connected with piston rods 44 that match the detection cylinder 281, the upper end of the round rod 43 is fixedly connected with a round plate 45, and the same spring and a spring are fixedly connected between the round plate 45 and the elastic cylinder 42. A telescopic airbag 46 is provided, and a conductive block 47 is fixedly connected to the upper side wall of the circular plate 45, and the conductive block 47 is electrically connected to an external power supply. A conductive plate 48 is embedded in the left side wall of the elastic cylinder 42, and the conductive plate 48 is electrically connected to the positive circuit of the servo motor 38. A timing component 49 is connected to the upper side wall of the pressure plate 41, which can detect the melt flow rate of the three-part masterbatch at the same time when sampling and testing the masterbatch, thereby saving the time for cleaning the residues of the device, thereby improving the detection efficiency of the detection device and reducing the space occupied by the detection device.

[0035] The timing assembly 49 includes a support box 491 and a timing cylinder 492, and the support box 491 and the timing cylinder 492 are both fixedly connected to the upper side wall of the pressure plate 41. The telescopic airbag 46 and the support box 491 are fixedly connected by a same short tube 50, and the tube wall of the short tube 50 is connected to a one-way tube 66, and a one-way valve is arranged in the one-way tube 66. The support box 491 and the timing cylinder 492 are fixedly connected by a same transverse tube 51, and a first control valve 52 is arranged in the transverse tube 51. A retaining ring 53 is fixedly connected to the inner wall of the timing cylinder 492, and a piston block 54 is placed on the upper side wall of the retaining ring 53. The same spring is fixedly connected between the piston block 54 and the timing cylinder 492. The left side wall of the timing cylinder 492 is connected to a microporous tube 55, and a second control valve 56 is arranged in the microporous tube 55. The left side wall of the elastic cylinder 42 A trigger button 57 is fixedly connected, and the trigger button 57 is electrically connected to the second control valve 56 through the PLC controller 4. A trigger assembly 58 is connected to the upper side wall of the piston block 54, and the trigger assembly 58 includes a fixed frame 581 and a metal wheel 582. The fixed frame 581 is fixedly connected to the upper side wall of the piston block 54, and the inner wall of the fixed frame 581 is rotatably connected to a connecting shaft 59. The metal wheel 582 is fixedly sleeved outside the connecting shaft 59, and the metal wheel 582 is electrically connected to an external power supply. An insulating pad 60 is fixedly sleeved on the side wall of the metal wheel 582, and a rotating rod 61 is fixedly connected to the rod wall at the front end of the connecting shaft 59. Two baffle rods 62 are fixedly connected to the front side wall of the fixed frame 581. A trigger plate 63 is inlaid on the inner wall of the timing cylinder 492, which can maintain pressure on the detection cylinder 281 for a certain period of time.

[0036] Three display screens 64 are fixedly connected to the right side wall of the pressure box 361 . The colorimeter 10 and the three weighing cylinders 35 are electrically connected to the display screens 64 through the PLC controller 4 , and the detection data can be displayed through the display screens 64 .

[0037] The operating principle of the present invention is now described as follows: the raw material barrel 3 is placed in the placement frame 2, and the lower inner wall of the placement frame 2 is fixedly connected to the limit block, so that the raw material barrel 3 can be placed at the set position. When the masterbatch needs to be sampled and tested, the operator transmits a control signal to the PLC controller 4 through the operation interface of the peripheral device. After receiving the signal, the PLC controller 4 first controls the second linear motor 7 to work, and the second linear motor 7 drives the third linear motor 8 and the sampling component 11 to move downward through the bracket. At the same time, the PLC controller 4 controls the electromagnetic block 27 to work. After the electromagnetic block 27 is energized, it will generate a magnetic The electromagnetic block 27 attracts the permanent magnet block 26 to move downward, and the permanent magnet block 26 drives the pull rod 25 to move downward through the sliding block 24, so that the pull rod 25 is inserted into the insert tube 23. Then the PLC controller 4 controls the electric push rod 19 to work, and the electric push rod 19 is driven to pull the sliding box 182 and the rubber plate 181 to the right, so that the rubber plate 181 and the sampling port 9 are separated. At the same time, the sliding box 182 pulls the insert tube 23 and the rubber seat 21 to move to the right together through the pull rod 25, thereby opening the raw material tube 3 and the sampling port 9 at the same time. The second linear motor 7 drives the sampling assembly 11 to move downward, so that the sampling assembly 11 passes through the sampling port 9 and extends into the raw material. The cylinder 3 is filled with the set depth, and then the PLC controller 4 controls the micro electric push rod 13 to work. The micro electric push rod 13 drives the micro motor 15 and the collecting head 16 to move to the right, so that the collecting head 16 is inserted into the masterbatch. The masterbatch in the raw material cylinder 3 will fall into the sampling slot 17 under the action of gravity. Then the PLC controller 4 controls the micro electric push rod 13 to drive the collecting head 16 to retract. At the same time, the PLC controller 4 controls the second linear motor 7 to drive the sampling assembly 11 to move upward and retract into the box body 1. Then the PLC controller 4 controls the driving electric push rod 19 to drive the rubber plate 181 and the rubber seat 21 to return to the initial position. The PLC controller 4 controls the third linear motor 8 to work, and the third linear motor 8 drives the sampling component 11 to move rightward to the set position, so that the sampling head 112 moves to the left side of the colorimeter 10. Then the PLC controller 4 controls the micro electric push rod 13 to work, so that the micro electric push rod 13 drives the collecting head 16 to move to the right below the colorimeter 10. The color of the masterbatch in the sampling slot 17 is detected by the colorimeter 10, and the ΔE (color difference) value obtained by the detection is displayed on the display screen 64. According to the specific application scenario and customer requirements, it can be judged whether the color of the masterbatch is qualified. For high-end electronic products, automotive interiors, etc., the ΔE value is usually required to be within 1.0 to be considered qualified; for some ordinary plastic products or applications that do not require particularly high color accuracy, the ΔE value within 2.0 may be accepted as qualified; and the data of the first detection of the colorimeter 10 is displayed on the front display screen 64, the data of the second detection is displayed on the middle display screen 64, and the data of the third detection is displayed on the rear display screen 64;

[0038] When the colorimeter 10 detects and contacts the masterbatch, the PLC controller 4 will control the first linear motor 5 to work, so that the first linear motor 5 drives the sampling component 11 to move to the top of the front feed hopper 29, and then the PLC controller 4 controls the micro motor 15 to rotate one circle. During the rotation of the micro motor 15, the masterbatch in the sampling slot 17 will fall into the front feed hopper 29 under the action of gravity, and fall into the front detection cylinder 281 through the front feed pipe 282. Then the PLC controller 4 controls the sampling component 11 to repeat the above steps to transport the other two masterbatches to the detection cylinder 281 for storage. Then the PLC controller 4 controls the heating wire 31 to work for eight minutes to make the masterbatch in the three detection cylinders 281 become molten. Then the PLC controller 4 controls the conductive block 47 to be electrically connected to the external power supply. The conductive block 47 is in contact with the conductive plate 48 in the initial state. The conductive plate 48 is electrically connected to the positive circuit of the servo motor 38. When the conductive block 47 is energized, the external current will be transmitted to the positive circuit of the servo motor 38 through the conductive plate 48, so that the servo motor 38 drives the threaded rod 37 to rotate. Through the threaded fit, the threaded rod 37 will control the threaded cylinder 39 to move downward. The threaded cylinder 39 will drive the pressing plate 41, the elastic cylinder 42, the round rod 43 and the piston column 44 to move downward together through the pressing rod 40, so that the piston column 44 is inserted into the detection cylinder 281. When the piston column 44 moves downward to the bottom of the feed pipe 282, it will compress the gas in the space below, so that the air pressure in the space below the piston column 44 becomes larger, and the masterbatch in the molten state will fall into the weighing cylinder 35 through the die 33 under the action of pressure. The weighing cylinder 35 is provided with a weighing element, and the weight of the masterbatch falling into the weighing cylinder 35 can be detected by the weighing element, and the weight can be displayed in real time through the corresponding display screen 64;

[0039] When the air pressure below the piston column 44 increases, the speed at which the piston column 44 and the round rod 43 move downward will slow down, while the elastic cylinder 42, driven by the threaded cylinder 39, will still move downward at a faster speed, so that the round rod 43 drives the circular plate 45 to slide relatively upward in the elastic cylinder 42, and the circular plate 45 will squeeze the telescopic air bag 46 above, so that the gas in the telescopic air bag 46 is transported to the support box 491 through the short tube 50. While the servo motor 38 is working, the PLC controller 4 will control the first control valve 52 to be in the open state, and the gas entering the support box 491 will be transported to the timing cylinder 492 through the cross pipe 51, so that the air pressure in the space below the piston block 54 increases. The piston block 54 will move upward under the action of the larger air pressure, and the piston block During the upward movement, the metal wheel 582 is driven by the fixing frame 581 to move upward together, and the metal wheel 582 is fitted with the inner wall of the timing cylinder 492. During the upward movement, the metal wheel 582 rotates clockwise, so that the insulating pad 60 contacts the inner wall of the timing cylinder 492, and the metal wheel 582 drives the rotating rod 61 to rotate at the same time. After the rotating rod 61 rotates upward at a certain angle, it is blocked by the upper blocking rod 62, so that the metal wheel 582 stops rotating, so that the insulating pad 60 is always in contact with the inner wall of the timing cylinder 492, and the metal wheel 582 does not contact the trigger plate 63 during the upward movement. When the circular plate 45 moves upward, it drives the conductive block 47 to move upward at the same time, until the circular plate 45 moves upward. When the conductive block 47 and the conductive plate 48 are separated, the forward circuit of the servo motor 38 is disconnected, and the servo motor 38 stops working. At this time, a set pressure is maintained in the detection cylinder 281. When the pressure in the detection cylinder 281 decreases with the discharge of the molten masterbatch, the circular plate 45 will drive the conductive block 47 to contact the conductive plate 48 again, so that the servo motor 38 continues to work, so that the detection cylinder 281 is always kept at the set pressure. When the conductive block 47 and the conductive plate 48 are separated, the conductive block 47 will press the trigger button 57 upward, so that the trigger button 57 sends an electrical signal to the PLC controller 4, and the PLC controller 4 will control the second control valve 56 to open, and the gas under the piston block 54 will be slowly discharged through the microporous tube 55. When the piston block 54 is released, the piston block 54 will gradually move downward under the action of the elastic force of the spring and gravity. In the process of moving downward, the piston block 54 will drive the metal wheel 582 to move downward synchronously. Referring to the above principle, the metal part of the metal wheel 582 will contact the inner wall of the timing cylinder 492. When the piston block 54 moves downward for ten minutes, the metal wheel 582 will contact the trigger plate 63. The metal wheel 582 is electrically connected to the external power supply, and the trigger plate 63 is electrically connected to the PLC controller 4. When the metal wheel 582 contacts the trigger plate 63, an electrical signal will be transmitted to the PLC controller 4. After receiving the electrical signal, the PLC controller 4 will control the servo motor 38 to work in reverse, thereby moving the piston column 44 upward to the initial position.When the servo motor 38 controls the elastic tube 42 to move upward, the air pressure in the telescopic airbag 46 will decrease, and the external gas will enter the telescopic airbag 46 through the one-way tube 66 and the one-way valve under the action of atmospheric pressure;

[0040] At this time, a certain amount of molten masterbatch will fall into the weighing cylinder 35. According to the mass of the extruded material and the time, the melt flow rate (MFR) is calculated according to the formula, and the unit is usually g / 10min. Melt flow rate (MFR) = mass of the extruded material (g) ÷ time (min). If the mass of the masterbatch extruded within 10 minutes is 5 grams, 5 grams ÷ 10 minutes = 0.5g / 10 min, then the melt flow rate is 0.5g / 10min. If the masterbatch is used for polyethylene (PE), its melt flow rate may be between 1-20g / 10min; when used for polypropylene (PP), it may be around 2-30g / 10min. For some products requiring high-precision injection molding, a masterbatch with a melt flow rate of 5-10g / 10min may be required; and in some extrusion molding processes, a masterbatch of 15-20g / 10min may be more suitable. The melt flow rates of three masterbatches can be intuitively displayed through the display screen 64.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A masterbatch sampling and detection device, comprising a housing (1), characterized in that: The lower side wall of the box body (1) is fixedly connected to a placement frame (2), a raw material barrel (3) is placed in the placement frame (2), a PLC controller (4) is fixedly connected to the right inner wall of the placement frame (2), a first linear motor (5) placed longitudinally is fixedly connected to the upper side wall of the box body (1), the output end of the first linear motor (5) is located in the box body (1) and is fixedly connected to a movable plate (6), the upper side wall of the box body (1) is provided with a sliding opening that is slidably matched with the output end of the first linear motor (5), the lower side wall of the movable plate (6) is fixedly connected to a second linear motor (7) arranged vertically, the output end of the second linear motor (7) is fixedly connected to a third linear motor (8) arranged horizontally, and the third linear motor (8) is fixedly connected to the output end of the second linear motor (7). The output end of the box (8) is fixedly connected to a sampling component (11); a sampling port (9) matching the sampling component (11) is provided on the lower side wall of the box (1); a sealing component (18) is provided below the sampling port (9); three detection components (28) are connected to the right side wall of the box (1); the melt flow rate of the masterbatch is detected by the detection components (28); a pressure component (36) is provided above the detection component (28); pressure is applied to the detection component (28) by the pressure component (36); a colorimeter (10) is fixedly connected to the right inner wall of the box (1); the sampling component (11) includes a sampling rod (111) and a sampling head (112); the output end of the third linear motor (8) is connected to the sampling port (9) by a sealing component (18); The bracket is fixedly connected to the upper end of the sampling rod (111); the sampling head (112) is fixedly connected to the lower end of the sampling rod (111); a transverse groove (12) is provided on the right side wall of the sampling head (112); a micro electric push rod (13) is fixedly connected to the left side wall of the transverse groove (12); a flow guide cover (65) arranged outside the micro electric push rod (13) is fixedly connected to the side wall of the sampling head (112); an output end of the micro electric push rod (13) is fixedly connected to a support plate (14); a micro motor (15) is fixedly connected to the right side wall of the support plate (14); a collecting head (16) is fixedly connected to the output end of the micro motor (15); a sampling groove (17) is provided on the upper side wall of the collecting head (16); The right end of the collecting head (16) and the lower end of the sampling head (112) are both pointed structures. The sealing assembly (18) comprises a rubber plate (181) and a sliding box (182). The rubber plate (181) is located below the sampling port (9). The sliding box (182) and the lower side wall of the rubber plate (181) are fixedly connected. The right inner wall of the placement frame (2) is fixedly connected to a driving electric push rod (19). The output end of the driving electric push rod (19) is fixedly connected to the right side wall of the sliding box (182). The upper side wall of the raw material barrel (3) is connected to a square tube (20). The side wall of the square tube (20) is plugged with a rubber seat (21). The right side of the rubber seat (21) extends out of the square tube (20) and is fixedly connected to a vertical plate (22).Two springs are fixedly connected between the vertical plate (22) and the square tube (20); the right side wall of the vertical plate (22) is fixedly connected with an insert cylinder (23); the upper inner wall of the sliding box (182) is fixedly connected with a sliding block (24) via a spring; the left side wall of the sliding block (24) is fixedly connected with a pull rod (25); the lower end of the pull rod (25) extends out of the sliding box (182) and is inserted into the insert cylinder (23); the lower side wall of the sliding block (24) is fixedly connected with a permanent magnet block (26); the lower inner wall of the sliding box (182) is fixedly connected with an electromagnetic block (27) matching the permanent magnet block (26); the detection assembly (28) comprises a detection cylinder (281) and a feeding pipe (282); the detection cylinder (28 1) connected to the right side wall of the box (1) through a bracket, the feed pipe (282) is inserted into the right side wall of the box (1), the right end of the feed pipe (282) extends out of the box (1) and is connected to the side wall of the detection tube (281), the tube wall of the feed pipe (282) located in the box (1) is connected to a feed hopper (29), the outer wall of the detection tube (281) is fixedly sleeved with a jacket (30), the inner wall of the jacket (30) is fixedly connected to a heating wire (31), the lower end of the detection tube (281) is fixedly connected to a threaded ring (32), the inner thread of the threaded ring (32) is sleeved with a die (33), and the right side wall of the placement frame (2) is fixedly connected to three bearing tubes (34) located below the detection tube (281), A weighing cylinder (35) is placed in the bearing cylinder (34); the pressure assembly (36) comprises a pressure box (361) and a partition (362); the pressure box (361) is fixedly connected to the right side wall of the box body (1); the partition (362) is fixedly connected to the inner wall of the pressure box (361); a threaded rod (37) is rotatably connected between the partition (362) and the pressure box (361); a servo motor (38) is fixedly connected to the upper side wall of the partition (362); the output end of the servo motor (38) is fixedly connected to the upper end of the threaded rod (37); a threaded cylinder (39) is threadedly sleeved on the rod wall of the threaded rod (37); a pressure rod (40) is fixedly connected to the left side wall of the threaded cylinder (39); the pressure rod The lower end of the pressure plate (40) is fixedly connected to a pressure plate (41), and the lower side wall of the pressure plate (41) is fixedly connected to three elastic cylinders (42), and round rods (43) are inserted into the three elastic cylinders (42). The lower ends of the three round rods (43) extend out of the pressure cylinder and are fixedly connected to piston rods (44) that match the detection cylinder (281). The upper end of the round rod (43) is fixedly connected to a circular plate (45), and the same spring and a telescopic airbag (46) are fixedly connected between the circular plate (45) and the elastic cylinder (42). The upper side wall of the circular plate (45) is fixedly connected to a conductive block (47), and the conductive block (47) is electrically connected to an external power supply. The left side wall of the elastic cylinder (42) is inlaid with a conductive plate (48).The conductive plate (48) is electrically connected to the positive circuit of the servo motor (38); the upper side wall of the pressing plate (41) is connected to a timing assembly (49); the timing assembly (49) comprises a support box (491) and a timing cylinder (492); the support box (491) and the timing cylinder (492) are both fixedly connected to the upper side wall of the pressing plate (41); the telescopic airbag (46) and the support box (491) are fixedly connected to a same short tube (50); the tube wall of the short tube (50) is connected to a one-way tube (66); a one-way valve is provided in the one-way tube (66); the support box (491) and the timing cylinder (492) are fixedly connected to a same transverse tube (51); a first control valve (52) is provided in the transverse tube (51); the The inner wall of the timing cylinder (492) is fixedly connected to a retaining ring (53), the upper side wall of the retaining ring (53) is provided with a piston block (54), the piston block (54) and the timing cylinder (492) are fixedly connected to a same spring, the left side wall of the timing cylinder (492) is communicated with a microporous tube (55), a second control valve (56) is arranged in the microporous tube (55), the left side wall of the elastic cylinder (42) is fixedly connected to a trigger button (57), the trigger button (57) is electrically connected to the second control valve (56) via a PLC controller (4), the upper side wall of the piston block (54) is connected to a trigger assembly (58), the trigger assembly (58) comprises a fixing frame (581) and a metal wheel (582), the fixing frame (58 1) fixedly connected to the upper side wall of the piston block (54), the inner wall of the fixing frame (581) is rotatably connected to a connecting shaft (59), the metal wheel (582) is fixedly sleeved outside the connecting shaft (59), the metal wheel (582) is electrically connected to an external power source, the side wall fixing sleeve of the metal wheel (582) is provided with an insulating pad (60), the rod wall at the front end of the connecting shaft (59) is fixedly connected to a rotating rod (61), the front side wall of the fixing frame (581) is fixedly connected to two blocking rods (62), the inner wall of the timing cylinder (492) is inlaid with a trigger plate (63), the piston block (54) will drive the metal wheel (582) to move upward through the fixing frame (581) during the upward movement, and the metal wheel (582) and the timing cylinder are connected. The inner wall of the timing cylinder (492) is fitted, and the metal wheel (582) rotates clockwise during the upward movement, so that the insulating pad (60) contacts the inner wall of the timing cylinder (492), and the metal wheel (582) drives the rotating rod (61) to rotate at the same time during the rotation. After the rotating rod (61) rotates upward by a certain angle, it is blocked by the upper blocking rod (62), so that the metal wheel (582) stops rotating, so that the insulating pad (60) is always in contact with the inner wall of the timing cylinder (492), so that the metal wheel (582) does not contact the trigger plate (63) during the upward movement. When the circular plate (45) moves upward, it drives the conductive block (47) to move upward at the same time until the conductive block (47) and the conductive plate (48) are separated.The forward circuit of the servo motor (38) is disconnected, causing the servo motor (38) to stop working. At this time, a set pressure is maintained in the detection cylinder (281). When the pressure in the detection cylinder (281) decreases as the molten masterbatch is discharged, the circular plate (45) drives the conductive block (47) to contact the conductive plate (48) again, causing the servo motor (38) to continue working, thereby keeping the set pressure in the detection cylinder (281). When the conductive block (47) and the conductive plate (48) are separated, the conductive block (47) presses the trigger button (57) upward, causing the trigger button (57) to transmit an electrical signal to the PLC controller (4), and the PLC controller (4) controls When the second control valve (56) is opened, the gas below the piston block (54) will be slowly discharged through the microporous tube (55), and the piston block (54) will gradually move downward under the action of the elastic force of the spring and gravity. During the downward movement of the piston block (54), the metal wheel (582) will be driven to move downward synchronously, and the metal part of the metal wheel (582) will contact the inner wall of the timing cylinder (492). When the metal wheel (582) contacts the trigger plate (63), an electrical signal will be transmitted to the PLC controller (4). After receiving the electrical signal, the PLC controller (4) will control the servo motor (38) to work in the reverse direction, thereby moving the piston rod (44) upward to the initial position.

2. A masterbatch sampling and detection device according to claim 1, characterized in that: Three display screens (64) are fixedly connected to the right side wall of the pressure box (361), and the colorimeter (10) and the three weighing cylinders (35) are electrically connected to the display screens (64) via a PLC controller (4).

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